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- remove ddcxinfos, replaced by monitor-edid (which is in a separate package)
- add many resolutions (they are structured by aspect ratio for next move) - put the "Monitor preferred modeline" from EDID in xorg.conf - for this ModeLine must be exported from the monitor section - specifying a VendorName|ModelName in auto_inst is valid, don't overwrite it with edid probe - the strange /dev/zero needed (?) by ddcxinfos is no more needed - field {size} is now {diagonal_size}, and is no more "corrected" - add @CVT_ratios and @CVT_vfreqs (unused at the moment) - Getopt::Long is needed by monitor-parse-edid
Diffstat (limited to 'tools/ddcprobe/x86emu/ops.c')
-rw-r--r--tools/ddcprobe/x86emu/ops.c11699
1 files changed, 0 insertions, 11699 deletions
diff --git a/tools/ddcprobe/x86emu/ops.c b/tools/ddcprobe/x86emu/ops.c
deleted file mode 100644
index 6fc936b28..000000000
--- a/tools/ddcprobe/x86emu/ops.c
+++ /dev/null
@@ -1,11699 +0,0 @@
-/****************************************************************************
-*
-* Realmode X86 Emulator Library
-*
-* Copyright (C) 1996-1999 SciTech Software, Inc.
-* Copyright (C) David Mosberger-Tang
-* Copyright (C) 1999 Egbert Eich
-*
-* ========================================================================
-*
-* Permission to use, copy, modify, distribute, and sell this software and
-* its documentation for any purpose is hereby granted without fee,
-* provided that the above copyright notice appear in all copies and that
-* both that copyright notice and this permission notice appear in
-* supporting documentation, and that the name of the authors not be used
-* in advertising or publicity pertaining to distribution of the software
-* without specific, written prior permission. The authors makes no
-* representations about the suitability of this software for any purpose.
-* It is provided "as is" without express or implied warranty.
-*
-* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
-* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
-* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
-* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
-* USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
-* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-* PERFORMANCE OF THIS SOFTWARE.
-*
-* ========================================================================
-*
-* Language: ANSI C
-* Environment: Any
-* Developer: Kendall Bennett
-*
-* Description: This file includes subroutines to implement the decoding
-* and emulation of all the x86 processor instructions.
-*
-* There are approximately 250 subroutines in here, which correspond
-* to the 256 byte-"opcodes" found on the 8086. The table which
-* dispatches this is found in the files optab.[ch].
-*
-* Each opcode proc has a comment preceeding it which gives it's table
-* address. Several opcodes are missing (undefined) in the table.
-*
-* Each proc includes information for decoding (DECODE_PRINTF and
-* DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc
-* functions (START_OF_INSTR, END_OF_INSTR).
-*
-* Many of the procedures are *VERY* similar in coding. This has
-* allowed for a very large amount of code to be generated in a fairly
-* short amount of time (i.e. cut, paste, and modify). The result is
-* that much of the code below could have been folded into subroutines
-* for a large reduction in size of this file. The downside would be
-* that there would be a penalty in execution speed. The file could
-* also have been *MUCH* larger by inlining certain functions which
-* were called. This could have resulted even faster execution. The
-* prime directive I used to decide whether to inline the code or to
-* modularize it, was basically: 1) no unnecessary subroutine calls,
-* 2) no routines more than about 200 lines in size, and 3) modularize
-* any code that I might not get right the first time. The fetch_*
-* subroutines fall into the latter category. The The decode_* fall
-* into the second category. The coding of the "switch(mod){ .... }"
-* in many of the subroutines below falls into the first category.
-* Especially, the coding of {add,and,or,sub,...}_{byte,word}
-* subroutines are an especially glaring case of the third guideline.
-* Since so much of the code is cloned from other modules (compare
-* opcode #00 to opcode #01), making the basic operations subroutine
-* calls is especially important; otherwise mistakes in coding an
-* "add" would represent a nightmare in maintenance.
-*
-****************************************************************************/
-
-/* $XFree86: xc/extras/x86emu/src/x86emu/ops.c,v 1.8tsi Exp $ */
-
-#include "x86emu/x86emui.h"
-
-/*----------------------------- Implementation ----------------------------*/
-
-/****************************************************************************
-PARAMETERS:
-op1 - Instruction op code
-
-REMARKS:
-Handles illegal opcodes.
-****************************************************************************/
-static void x86emuOp_illegal_op(
- u8 op1)
-{
- START_OF_INSTR();
- if (M.x86.R_SP != 0) {
- DECODE_PRINTF("ILLEGAL X86 OPCODE\n");
- TRACE_REGS();
- printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n",
- M.x86.R_CS, M.x86.R_IP-1,op1);
- HALT_SYS();
- }
- else {
- /* If we get here, it means the stack pointer is back to zero
- * so we are just returning from an emulator service call
- * so therte is no need to display an error message. We trap
- * the emulator with an 0xF1 opcode to finish the service
- * call.
- */
- X86EMU_halt_sys();
- }
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x00
-****************************************************************************/
-static void x86emuOp_add_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
- u8 *destreg, *srcreg;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADD\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x01
-****************************************************************************/
-static void x86emuOp_add_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADD\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = add_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x02
-****************************************************************************/
-static void x86emuOp_add_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADD\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x03
-****************************************************************************/
-static void x86emuOp_add_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADD\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = add_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x04
-****************************************************************************/
-static void x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADD\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = add_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x05
-****************************************************************************/
-static void x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("ADD\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("ADD\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = add_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = add_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x06
-****************************************************************************/
-static void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("PUSH\tES\n");
- TRACE_AND_STEP();
- push_word(M.x86.R_ES);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x07
-****************************************************************************/
-static void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("POP\tES\n");
- TRACE_AND_STEP();
- M.x86.R_ES = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x08
-****************************************************************************/
-static void x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("OR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x09
-****************************************************************************/
-static void x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("OR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = or_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0a
-****************************************************************************/
-static void x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("OR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0b
-****************************************************************************/
-static void x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("OR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = or_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0c
-****************************************************************************/
-static void x86emuOp_or_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("OR\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = or_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0d
-****************************************************************************/
-static void x86emuOp_or_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("OR\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("OR\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = or_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = or_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0e
-****************************************************************************/
-static void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("PUSH\tCS\n");
- TRACE_AND_STEP();
- push_word(M.x86.R_CS);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x0f. Escape for two-byte opcode (286 or better)
-****************************************************************************/
-static void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1))
-{
- u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++));
- INC_DECODED_INST_LEN(1);
- (*x86emu_optab2[op2])(op2);
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x10
-****************************************************************************/
-static void x86emuOp_adc_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADC\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x11
-****************************************************************************/
-static void x86emuOp_adc_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADC\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = adc_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x12
-****************************************************************************/
-static void x86emuOp_adc_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADC\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x13
-****************************************************************************/
-static void x86emuOp_adc_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADC\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = adc_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x14
-****************************************************************************/
-static void x86emuOp_adc_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("ADC\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = adc_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x15
-****************************************************************************/
-static void x86emuOp_adc_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("ADC\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("ADC\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = adc_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = adc_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x16
-****************************************************************************/
-static void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("PUSH\tSS\n");
- TRACE_AND_STEP();
- push_word(M.x86.R_SS);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x17
-****************************************************************************/
-static void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("POP\tSS\n");
- TRACE_AND_STEP();
- M.x86.R_SS = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x18
-****************************************************************************/
-static void x86emuOp_sbb_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("SBB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x19
-****************************************************************************/
-static void x86emuOp_sbb_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("SBB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sbb_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1a
-****************************************************************************/
-static void x86emuOp_sbb_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("SBB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1b
-****************************************************************************/
-static void x86emuOp_sbb_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("SBB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sbb_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1c
-****************************************************************************/
-static void x86emuOp_sbb_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("SBB\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = sbb_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1d
-****************************************************************************/
-static void x86emuOp_sbb_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("SBB\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("SBB\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = sbb_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = sbb_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1e
-****************************************************************************/
-static void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("PUSH\tDS\n");
- TRACE_AND_STEP();
- push_word(M.x86.R_DS);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x1f
-****************************************************************************/
-static void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("POP\tDS\n");
- TRACE_AND_STEP();
- M.x86.R_DS = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x20
-****************************************************************************/
-static void x86emuOp_and_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("AND\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
-
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
-
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
-
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
-
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x21
-****************************************************************************/
-static void x86emuOp_and_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("AND\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = and_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x22
-****************************************************************************/
-static void x86emuOp_and_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("AND\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x23
-****************************************************************************/
-static void x86emuOp_and_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("AND\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_long(*destreg, srcval);
- break;
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_word(*destreg, srcval);
- break;
- }
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = and_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x24
-****************************************************************************/
-static void x86emuOp_and_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("AND\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = and_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x25
-****************************************************************************/
-static void x86emuOp_and_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("AND\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("AND\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = and_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = and_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x26
-****************************************************************************/
-static void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("ES:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_SEGOVR_ES;
- /*
- * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
- * opcode subroutines we do not want to do this.
- */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x27
-****************************************************************************/
-static void x86emuOp_daa(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("DAA\n");
- TRACE_AND_STEP();
- M.x86.R_AL = daa_byte(M.x86.R_AL);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x28
-****************************************************************************/
-static void x86emuOp_sub_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("SUB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x29
-****************************************************************************/
-static void x86emuOp_sub_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("SUB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = sub_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2a
-****************************************************************************/
-static void x86emuOp_sub_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("SUB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2b
-****************************************************************************/
-static void x86emuOp_sub_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("SUB\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = sub_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2c
-****************************************************************************/
-static void x86emuOp_sub_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("SUB\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = sub_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2d
-****************************************************************************/
-static void x86emuOp_sub_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("SUB\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("SUB\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = sub_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = sub_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2e
-****************************************************************************/
-static void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("CS:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_SEGOVR_CS;
- /* note no DECODE_CLEAR_SEGOVR here. */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x2f
-****************************************************************************/
-static void x86emuOp_das(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("DAS\n");
- TRACE_AND_STEP();
- M.x86.R_AL = das_byte(M.x86.R_AL);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x30
-****************************************************************************/
-static void x86emuOp_xor_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("XOR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_byte(destval, *srcreg);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x31
-****************************************************************************/
-static void x86emuOp_xor_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("XOR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_long(destval, *srcreg);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = xor_word(destval, *srcreg);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x32
-****************************************************************************/
-static void x86emuOp_xor_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("XOR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x33
-****************************************************************************/
-static void x86emuOp_xor_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("XOR\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = xor_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x34
-****************************************************************************/
-static void x86emuOp_xor_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("XOR\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- M.x86.R_AL = xor_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x35
-****************************************************************************/
-static void x86emuOp_xor_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XOR\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("XOR\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = xor_long(M.x86.R_EAX, srcval);
- } else {
- M.x86.R_AX = xor_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x36
-****************************************************************************/
-static void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("SS:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_SEGOVR_SS;
- /* no DECODE_CLEAR_SEGOVR ! */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x37
-****************************************************************************/
-static void x86emuOp_aaa(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("AAA\n");
- TRACE_AND_STEP();
- M.x86.R_AX = aaa_word(M.x86.R_AX);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x38
-****************************************************************************/
-static void x86emuOp_cmp_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
- u8 *destreg, *srcreg;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("CMP\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(destval, *srcreg);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(destval, *srcreg);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(destval, *srcreg);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x39
-****************************************************************************/
-static void x86emuOp_cmp_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("CMP\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(destval, *srcreg);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(destval, *srcreg);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(destval, *srcreg);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(destval, *srcreg);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(destval, *srcreg);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(destval, *srcreg);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3a
-****************************************************************************/
-static void x86emuOp_cmp_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("CMP\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(*destreg, srcval);
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(*destreg, srcval);
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(*destreg, srcval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3b
-****************************************************************************/
-static void x86emuOp_cmp_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("CMP\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(*destreg, srcval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(*destreg, srcval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(*destreg, srcval);
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(*destreg, srcval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- cmp_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3c
-****************************************************************************/
-static void x86emuOp_cmp_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("CMP\tAL,");
- srcval = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- cmp_byte(M.x86.R_AL, srcval);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3d
-****************************************************************************/
-static void x86emuOp_cmp_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("CMP\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("CMP\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- cmp_long(M.x86.R_EAX, srcval);
- } else {
- cmp_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3e
-****************************************************************************/
-static void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("DS:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_SEGOVR_DS;
- /* NO DECODE_CLEAR_SEGOVR! */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x3f
-****************************************************************************/
-static void x86emuOp_aas(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("AAS\n");
- TRACE_AND_STEP();
- M.x86.R_AX = aas_word(M.x86.R_AX);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x40
-****************************************************************************/
-static void x86emuOp_inc_AX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tEAX\n");
- } else {
- DECODE_PRINTF("INC\tAX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = inc_long(M.x86.R_EAX);
- } else {
- M.x86.R_AX = inc_word(M.x86.R_AX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x41
-****************************************************************************/
-static void x86emuOp_inc_CX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tECX\n");
- } else {
- DECODE_PRINTF("INC\tCX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ECX = inc_long(M.x86.R_ECX);
- } else {
- M.x86.R_CX = inc_word(M.x86.R_CX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x42
-****************************************************************************/
-static void x86emuOp_inc_DX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tEDX\n");
- } else {
- DECODE_PRINTF("INC\tDX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDX = inc_long(M.x86.R_EDX);
- } else {
- M.x86.R_DX = inc_word(M.x86.R_DX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x43
-****************************************************************************/
-static void x86emuOp_inc_BX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tEBX\n");
- } else {
- DECODE_PRINTF("INC\tBX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBX = inc_long(M.x86.R_EBX);
- } else {
- M.x86.R_BX = inc_word(M.x86.R_BX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x44
-****************************************************************************/
-static void x86emuOp_inc_SP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tESP\n");
- } else {
- DECODE_PRINTF("INC\tSP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESP = inc_long(M.x86.R_ESP);
- } else {
- M.x86.R_SP = inc_word(M.x86.R_SP);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x45
-****************************************************************************/
-static void x86emuOp_inc_BP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tEBP\n");
- } else {
- DECODE_PRINTF("INC\tBP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBP = inc_long(M.x86.R_EBP);
- } else {
- M.x86.R_BP = inc_word(M.x86.R_BP);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x46
-****************************************************************************/
-static void x86emuOp_inc_SI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tESI\n");
- } else {
- DECODE_PRINTF("INC\tSI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESI = inc_long(M.x86.R_ESI);
- } else {
- M.x86.R_SI = inc_word(M.x86.R_SI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x47
-****************************************************************************/
-static void x86emuOp_inc_DI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INC\tEDI\n");
- } else {
- DECODE_PRINTF("INC\tDI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDI = inc_long(M.x86.R_EDI);
- } else {
- M.x86.R_DI = inc_word(M.x86.R_DI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x48
-****************************************************************************/
-static void x86emuOp_dec_AX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tEAX\n");
- } else {
- DECODE_PRINTF("DEC\tAX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = dec_long(M.x86.R_EAX);
- } else {
- M.x86.R_AX = dec_word(M.x86.R_AX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x49
-****************************************************************************/
-static void x86emuOp_dec_CX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tECX\n");
- } else {
- DECODE_PRINTF("DEC\tCX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ECX = dec_long(M.x86.R_ECX);
- } else {
- M.x86.R_CX = dec_word(M.x86.R_CX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4a
-****************************************************************************/
-static void x86emuOp_dec_DX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tEDX\n");
- } else {
- DECODE_PRINTF("DEC\tDX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDX = dec_long(M.x86.R_EDX);
- } else {
- M.x86.R_DX = dec_word(M.x86.R_DX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4b
-****************************************************************************/
-static void x86emuOp_dec_BX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tEBX\n");
- } else {
- DECODE_PRINTF("DEC\tBX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBX = dec_long(M.x86.R_EBX);
- } else {
- M.x86.R_BX = dec_word(M.x86.R_BX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4c
-****************************************************************************/
-static void x86emuOp_dec_SP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tESP\n");
- } else {
- DECODE_PRINTF("DEC\tSP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESP = dec_long(M.x86.R_ESP);
- } else {
- M.x86.R_SP = dec_word(M.x86.R_SP);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4d
-****************************************************************************/
-static void x86emuOp_dec_BP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tEBP\n");
- } else {
- DECODE_PRINTF("DEC\tBP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBP = dec_long(M.x86.R_EBP);
- } else {
- M.x86.R_BP = dec_word(M.x86.R_BP);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4e
-****************************************************************************/
-static void x86emuOp_dec_SI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tESI\n");
- } else {
- DECODE_PRINTF("DEC\tSI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESI = dec_long(M.x86.R_ESI);
- } else {
- M.x86.R_SI = dec_word(M.x86.R_SI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x4f
-****************************************************************************/
-static void x86emuOp_dec_DI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("DEC\tEDI\n");
- } else {
- DECODE_PRINTF("DEC\tDI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDI = dec_long(M.x86.R_EDI);
- } else {
- M.x86.R_DI = dec_word(M.x86.R_DI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x50
-****************************************************************************/
-static void x86emuOp_push_AX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tEAX\n");
- } else {
- DECODE_PRINTF("PUSH\tAX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_EAX);
- } else {
- push_word(M.x86.R_AX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x51
-****************************************************************************/
-static void x86emuOp_push_CX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tECX\n");
- } else {
- DECODE_PRINTF("PUSH\tCX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_ECX);
- } else {
- push_word(M.x86.R_CX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x52
-****************************************************************************/
-static void x86emuOp_push_DX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tEDX\n");
- } else {
- DECODE_PRINTF("PUSH\tDX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_EDX);
- } else {
- push_word(M.x86.R_DX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x53
-****************************************************************************/
-static void x86emuOp_push_BX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tEBX\n");
- } else {
- DECODE_PRINTF("PUSH\tBX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_EBX);
- } else {
- push_word(M.x86.R_BX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x54
-****************************************************************************/
-static void x86emuOp_push_SP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tESP\n");
- } else {
- DECODE_PRINTF("PUSH\tSP\n");
- }
- TRACE_AND_STEP();
- /* Always push (E)SP, since we are emulating an i386 and above
- * processor. This is necessary as some BIOS'es use this to check
- * what type of processor is in the system.
- */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_ESP);
- } else {
- push_word((u16)(M.x86.R_SP));
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x55
-****************************************************************************/
-static void x86emuOp_push_BP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tEBP\n");
- } else {
- DECODE_PRINTF("PUSH\tBP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_EBP);
- } else {
- push_word(M.x86.R_BP);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x56
-****************************************************************************/
-static void x86emuOp_push_SI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tESI\n");
- } else {
- DECODE_PRINTF("PUSH\tSI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_ESI);
- } else {
- push_word(M.x86.R_SI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x57
-****************************************************************************/
-static void x86emuOp_push_DI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSH\tEDI\n");
- } else {
- DECODE_PRINTF("PUSH\tDI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(M.x86.R_EDI);
- } else {
- push_word(M.x86.R_DI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x58
-****************************************************************************/
-static void x86emuOp_pop_AX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tEAX\n");
- } else {
- DECODE_PRINTF("POP\tAX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = pop_long();
- } else {
- M.x86.R_AX = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x59
-****************************************************************************/
-static void x86emuOp_pop_CX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tECX\n");
- } else {
- DECODE_PRINTF("POP\tCX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ECX = pop_long();
- } else {
- M.x86.R_CX = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5a
-****************************************************************************/
-static void x86emuOp_pop_DX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tEDX\n");
- } else {
- DECODE_PRINTF("POP\tDX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDX = pop_long();
- } else {
- M.x86.R_DX = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5b
-****************************************************************************/
-static void x86emuOp_pop_BX(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tEBX\n");
- } else {
- DECODE_PRINTF("POP\tBX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBX = pop_long();
- } else {
- M.x86.R_BX = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5c
-****************************************************************************/
-static void x86emuOp_pop_SP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tESP\n");
- } else {
- DECODE_PRINTF("POP\tSP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESP = pop_long();
- } else {
- M.x86.R_SP = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5d
-****************************************************************************/
-static void x86emuOp_pop_BP(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tEBP\n");
- } else {
- DECODE_PRINTF("POP\tBP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBP = pop_long();
- } else {
- M.x86.R_BP = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5e
-****************************************************************************/
-static void x86emuOp_pop_SI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tESI\n");
- } else {
- DECODE_PRINTF("POP\tSI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESI = pop_long();
- } else {
- M.x86.R_SI = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x5f
-****************************************************************************/
-static void x86emuOp_pop_DI(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POP\tEDI\n");
- } else {
- DECODE_PRINTF("POP\tDI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDI = pop_long();
- } else {
- M.x86.R_DI = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x60
-****************************************************************************/
-static void x86emuOp_push_all(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSHAD\n");
- } else {
- DECODE_PRINTF("PUSHA\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 old_sp = M.x86.R_ESP;
-
- push_long(M.x86.R_EAX);
- push_long(M.x86.R_ECX);
- push_long(M.x86.R_EDX);
- push_long(M.x86.R_EBX);
- push_long(old_sp);
- push_long(M.x86.R_EBP);
- push_long(M.x86.R_ESI);
- push_long(M.x86.R_EDI);
- } else {
- u16 old_sp = M.x86.R_SP;
-
- push_word(M.x86.R_AX);
- push_word(M.x86.R_CX);
- push_word(M.x86.R_DX);
- push_word(M.x86.R_BX);
- push_word(old_sp);
- push_word(M.x86.R_BP);
- push_word(M.x86.R_SI);
- push_word(M.x86.R_DI);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x61
-****************************************************************************/
-static void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POPAD\n");
- } else {
- DECODE_PRINTF("POPA\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDI = pop_long();
- M.x86.R_ESI = pop_long();
- M.x86.R_EBP = pop_long();
- M.x86.R_ESP += 4; /* skip ESP */
- M.x86.R_EBX = pop_long();
- M.x86.R_EDX = pop_long();
- M.x86.R_ECX = pop_long();
- M.x86.R_EAX = pop_long();
- } else {
- M.x86.R_DI = pop_word();
- M.x86.R_SI = pop_word();
- M.x86.R_BP = pop_word();
- M.x86.R_SP += 2; /* skip SP */
- M.x86.R_BX = pop_word();
- M.x86.R_DX = pop_word();
- M.x86.R_CX = pop_word();
- M.x86.R_AX = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */
-/*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x64
-****************************************************************************/
-static void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("FS:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_SEGOVR_FS;
- /*
- * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
- * opcode subroutines we do not want to do this.
- */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x65
-****************************************************************************/
-static void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("GS:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_SEGOVR_GS;
- /*
- * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4
- * opcode subroutines we do not want to do this.
- */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x66 - prefix for 32-bit register
-****************************************************************************/
-static void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("DATA:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_PREFIX_DATA;
- /* note no DECODE_CLEAR_SEGOVR here. */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x67 - prefix for 32-bit address
-****************************************************************************/
-static void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("ADDR:\n");
- TRACE_AND_STEP();
- M.x86.mode |= SYSMODE_PREFIX_ADDR;
- /* note no DECODE_CLEAR_SEGOVR here. */
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x68
-****************************************************************************/
-static void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 imm;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- imm = fetch_long_imm();
- } else {
- imm = fetch_word_imm();
- }
- DECODE_PRINTF2("PUSH\t%x\n", imm);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(imm);
- } else {
- push_word((u16)imm);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x69
-****************************************************************************/
-static void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("IMUL\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
- u32 res_lo,res_hi;
- s32 imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg;
- u16 srcval;
- u32 res;
- s16 imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- res = (s16)srcval * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
- u32 res_lo,res_hi;
- s32 imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg;
- u16 srcval;
- u32 res;
- s16 imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- res = (s16)srcval * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
- u32 res_lo,res_hi;
- s32 imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg;
- u16 srcval;
- u32 res;
- s16 imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- res = (s16)srcval * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
- u32 res_lo,res_hi;
- s32 imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg,*srcreg;
- u32 res;
- s16 imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- res = (s16)*srcreg * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6a
-****************************************************************************/
-static void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1))
-{
- s16 imm;
-
- START_OF_INSTR();
- imm = (s8)fetch_byte_imm();
- DECODE_PRINTF2("PUSH\t%d\n", imm);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long((s32)imm);
- } else {
- push_word(imm);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6b
-****************************************************************************/
-static void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
- s8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("IMUL\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
- u32 res_lo,res_hi;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg;
- u16 srcval;
- u32 res;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- res = (s16)srcval * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
- u32 res_lo,res_hi;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg;
- u16 srcval;
- u32 res;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- res = (s16)srcval * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
- u32 res_lo,res_hi;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg;
- u16 srcval;
- u32 res;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- res = (s16)srcval * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
- u32 res_lo,res_hi;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- TRACE_AND_STEP();
- imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm);
- if (res_hi != 0) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u32)res_lo;
- } else {
- u16 *destreg,*srcreg;
- u32 res;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%d\n", (s32)imm);
- res = (s16)*srcreg * (s16)imm;
- if (res > 0xFFFF) {
- SET_FLAG(F_CF);
- SET_FLAG(F_OF);
- } else {
- CLEAR_FLAG(F_CF);
- CLEAR_FLAG(F_OF);
- }
- *destreg = (u16)res;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6c
-****************************************************************************/
-static void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("INSB\n");
- ins(1);
- TRACE_AND_STEP();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6d
-****************************************************************************/
-static void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("INSD\n");
- ins(4);
- } else {
- DECODE_PRINTF("INSW\n");
- ins(2);
- }
- TRACE_AND_STEP();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6e
-****************************************************************************/
-static void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("OUTSB\n");
- outs(1);
- TRACE_AND_STEP();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x6f
-****************************************************************************/
-static void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("OUTSD\n");
- outs(4);
- } else {
- DECODE_PRINTF("OUTSW\n");
- outs(2);
- }
- TRACE_AND_STEP();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x70
-****************************************************************************/
-static void x86emuOp_jump_near_O(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if overflow flag is set */
- START_OF_INSTR();
- DECODE_PRINTF("JO\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_OF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x71
-****************************************************************************/
-static void x86emuOp_jump_near_NO(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if overflow is not set */
- START_OF_INSTR();
- DECODE_PRINTF("JNO\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (!ACCESS_FLAG(F_OF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x72
-****************************************************************************/
-static void x86emuOp_jump_near_B(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if carry flag is set. */
- START_OF_INSTR();
- DECODE_PRINTF("JB\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_CF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x73
-****************************************************************************/
-static void x86emuOp_jump_near_NB(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if carry flag is clear. */
- START_OF_INSTR();
- DECODE_PRINTF("JNB\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (!ACCESS_FLAG(F_CF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x74
-****************************************************************************/
-static void x86emuOp_jump_near_Z(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if zero flag is set. */
- START_OF_INSTR();
- DECODE_PRINTF("JZ\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_ZF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x75
-****************************************************************************/
-static void x86emuOp_jump_near_NZ(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if zero flag is clear. */
- START_OF_INSTR();
- DECODE_PRINTF("JNZ\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (!ACCESS_FLAG(F_ZF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x76
-****************************************************************************/
-static void x86emuOp_jump_near_BE(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if carry flag is set or if the zero
- flag is set. */
- START_OF_INSTR();
- DECODE_PRINTF("JBE\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x77
-****************************************************************************/
-static void x86emuOp_jump_near_NBE(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if carry flag is clear and if the zero
- flag is clear */
- START_OF_INSTR();
- DECODE_PRINTF("JNBE\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (!(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x78
-****************************************************************************/
-static void x86emuOp_jump_near_S(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if sign flag is set */
- START_OF_INSTR();
- DECODE_PRINTF("JS\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_SF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x79
-****************************************************************************/
-static void x86emuOp_jump_near_NS(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if sign flag is clear */
- START_OF_INSTR();
- DECODE_PRINTF("JNS\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (!ACCESS_FLAG(F_SF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7a
-****************************************************************************/
-static void x86emuOp_jump_near_P(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if parity flag is set (even parity) */
- START_OF_INSTR();
- DECODE_PRINTF("JP\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_PF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7b
-****************************************************************************/
-static void x86emuOp_jump_near_NP(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
-
- /* jump to byte offset if parity flag is clear (odd parity) */
- START_OF_INSTR();
- DECODE_PRINTF("JNP\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- if (!ACCESS_FLAG(F_PF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7c
-****************************************************************************/
-static void x86emuOp_jump_near_L(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
- int sf, of;
-
- /* jump to byte offset if sign flag not equal to overflow flag. */
- START_OF_INSTR();
- DECODE_PRINTF("JL\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- sf = ACCESS_FLAG(F_SF) != 0;
- of = ACCESS_FLAG(F_OF) != 0;
- if (sf ^ of)
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7d
-****************************************************************************/
-static void x86emuOp_jump_near_NL(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
- int sf, of;
-
- /* jump to byte offset if sign flag not equal to overflow flag. */
- START_OF_INSTR();
- DECODE_PRINTF("JNL\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- sf = ACCESS_FLAG(F_SF) != 0;
- of = ACCESS_FLAG(F_OF) != 0;
- /* note: inverse of above, but using == instead of xor. */
- if (sf == of)
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7e
-****************************************************************************/
-static void x86emuOp_jump_near_LE(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
- int sf, of;
-
- /* jump to byte offset if sign flag not equal to overflow flag
- or the zero flag is set */
- START_OF_INSTR();
- DECODE_PRINTF("JLE\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- sf = ACCESS_FLAG(F_SF) != 0;
- of = ACCESS_FLAG(F_OF) != 0;
- if ((sf ^ of) || ACCESS_FLAG(F_ZF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x7f
-****************************************************************************/
-static void x86emuOp_jump_near_NLE(u8 X86EMU_UNUSED(op1))
-{
- s8 offset;
- u16 target;
- int sf, of;
-
- /* jump to byte offset if sign flag equal to overflow flag.
- and the zero flag is clear */
- START_OF_INSTR();
- DECODE_PRINTF("JNLE\t");
- offset = (s8)fetch_byte_imm();
- target = (u16)(M.x86.R_IP + (s16)offset);
- DECODE_PRINTF2("%x\n", target);
- TRACE_AND_STEP();
- sf = ACCESS_FLAG(F_SF) != 0;
- of = ACCESS_FLAG(F_OF) != 0;
- if ((sf == of) && !ACCESS_FLAG(F_ZF))
- M.x86.R_IP = target;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-static u8 (*opc80_byte_operation[])(u8 d, u8 s) =
-{
- add_byte, /* 00 */
- or_byte, /* 01 */
- adc_byte, /* 02 */
- sbb_byte, /* 03 */
- and_byte, /* 04 */
- sub_byte, /* 05 */
- xor_byte, /* 06 */
- cmp_byte, /* 07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x80
-****************************************************************************/
-static void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg;
- uint destoffset;
- u8 imm;
- u8 destval;
-
- /*
- * Weirdo special case instruction format. Part of the opcode
- * held below in "RH". Doubly nested case would result, except
- * that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
-
- switch (rh) {
- case 0:
- DECODE_PRINTF("ADD\t");
- break;
- case 1:
- DECODE_PRINTF("OR\t");
- break;
- case 2:
- DECODE_PRINTF("ADC\t");
- break;
- case 3:
- DECODE_PRINTF("SBB\t");
- break;
- case 4:
- DECODE_PRINTF("AND\t");
- break;
- case 5:
- DECODE_PRINTF("SUB\t");
- break;
- case 6:
- DECODE_PRINTF("XOR\t");
- break;
- case 7:
- DECODE_PRINTF("CMP\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc80_byte_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_byte(destoffset, destval);
- break;
- case 1:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc80_byte_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_byte(destoffset, destval);
- break;
- case 2:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc80_byte_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc80_byte_operation[rh]) (*destreg, imm);
- if (rh != 7)
- *destreg = destval;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-static u16 (*opc81_word_operation[])(u16 d, u16 s) =
-{
- add_word, /*00 */
- or_word, /*01 */
- adc_word, /*02 */
- sbb_word, /*03 */
- and_word, /*04 */
- sub_word, /*05 */
- xor_word, /*06 */
- cmp_word, /*07 */
-};
-
-static u32 (*opc81_long_operation[])(u32 d, u32 s) =
-{
- add_long, /*00 */
- or_long, /*01 */
- adc_long, /*02 */
- sbb_long, /*03 */
- and_long, /*04 */
- sub_long, /*05 */
- xor_long, /*06 */
- cmp_long, /*07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x81
-****************************************************************************/
-static void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- /*
- * Weirdo special case instruction format. Part of the opcode
- * held below in "RH". Doubly nested case would result, except
- * that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
-
- switch (rh) {
- case 0:
- DECODE_PRINTF("ADD\t");
- break;
- case 1:
- DECODE_PRINTF("OR\t");
- break;
- case 2:
- DECODE_PRINTF("ADC\t");
- break;
- case 3:
- DECODE_PRINTF("SBB\t");
- break;
- case 4:
- DECODE_PRINTF("AND\t");
- break;
- case 5:
- DECODE_PRINTF("SUB\t");
- break;
- case 6:
- DECODE_PRINTF("XOR\t");
- break;
- case 7:
- DECODE_PRINTF("CMP\t");
- break;
- }
- }
-#endif
- /*
- * Know operation, decode the mod byte to find the addressing
- * mode.
- */
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval,imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- imm = fetch_long_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_long_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_long(destoffset, destval);
- } else {
- u16 destval,imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- imm = fetch_word_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_word_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval,imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- imm = fetch_long_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_long_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_long(destoffset, destval);
- } else {
- u16 destval,imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- imm = fetch_word_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_word_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval,imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- imm = fetch_long_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_long_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_long(destoffset, destval);
- } else {
- u16 destval,imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- imm = fetch_word_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_word_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 destval,imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- imm = fetch_long_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_long_operation[rh]) (*destreg, imm);
- if (rh != 7)
- *destreg = destval;
- } else {
- u16 *destreg;
- u16 destval,imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- imm = fetch_word_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc81_word_operation[rh]) (*destreg, imm);
- if (rh != 7)
- *destreg = destval;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-static u8 (*opc82_byte_operation[])(u8 s, u8 d) =
-{
- add_byte, /*00 */
- or_byte, /*01 *//*YYY UNUSED ???? */
- adc_byte, /*02 */
- sbb_byte, /*03 */
- and_byte, /*04 *//*YYY UNUSED ???? */
- sub_byte, /*05 */
- xor_byte, /*06 *//*YYY UNUSED ???? */
- cmp_byte, /*07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x82
-****************************************************************************/
-static void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg;
- uint destoffset;
- u8 imm;
- u8 destval;
-
- /*
- * Weirdo special case instruction format. Part of the opcode
- * held below in "RH". Doubly nested case would result, except
- * that the decoded instruction Similar to opcode 81, except that
- * the immediate byte is sign extended to a word length.
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
- switch (rh) {
- case 0:
- DECODE_PRINTF("ADD\t");
- break;
- case 1:
- DECODE_PRINTF("OR\t");
- break;
- case 2:
- DECODE_PRINTF("ADC\t");
- break;
- case 3:
- DECODE_PRINTF("SBB\t");
- break;
- case 4:
- DECODE_PRINTF("AND\t");
- break;
- case 5:
- DECODE_PRINTF("SUB\t");
- break;
- case 6:
- DECODE_PRINTF("XOR\t");
- break;
- case 7:
- DECODE_PRINTF("CMP\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm00_address(rl);
- destval = fetch_data_byte(destoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc82_byte_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_byte(destoffset, destval);
- break;
- case 1:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm01_address(rl);
- destval = fetch_data_byte(destoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc82_byte_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_byte(destoffset, destval);
- break;
- case 2:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- destval = fetch_data_byte(destoffset);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc82_byte_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc82_byte_operation[rh]) (*destreg, imm);
- if (rh != 7)
- *destreg = destval;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-static u16 (*opc83_word_operation[])(u16 s, u16 d) =
-{
- add_word, /*00 */
- or_word, /*01 *//*YYY UNUSED ???? */
- adc_word, /*02 */
- sbb_word, /*03 */
- and_word, /*04 *//*YYY UNUSED ???? */
- sub_word, /*05 */
- xor_word, /*06 *//*YYY UNUSED ???? */
- cmp_word, /*07 */
-};
-
-static u32 (*opc83_long_operation[])(u32 s, u32 d) =
-{
- add_long, /*00 */
- or_long, /*01 *//*YYY UNUSED ???? */
- adc_long, /*02 */
- sbb_long, /*03 */
- and_long, /*04 *//*YYY UNUSED ???? */
- sub_long, /*05 */
- xor_long, /*06 *//*YYY UNUSED ???? */
- cmp_long, /*07 */
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x83
-****************************************************************************/
-static void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- /*
- * Weirdo special case instruction format. Part of the opcode
- * held below in "RH". Doubly nested case would result, except
- * that the decoded instruction Similar to opcode 81, except that
- * the immediate byte is sign extended to a word length.
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
- switch (rh) {
- case 0:
- DECODE_PRINTF("ADD\t");
- break;
- case 1:
- DECODE_PRINTF("OR\t");
- break;
- case 2:
- DECODE_PRINTF("ADC\t");
- break;
- case 3:
- DECODE_PRINTF("SBB\t");
- break;
- case 4:
- DECODE_PRINTF("AND\t");
- break;
- case 5:
- DECODE_PRINTF("SUB\t");
- break;
- case 6:
- DECODE_PRINTF("XOR\t");
- break;
- case 7:
- DECODE_PRINTF("CMP\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval,imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm00_address(rl);
- destval = fetch_data_long(destoffset);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_long_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_long(destoffset, destval);
- } else {
- u16 destval,imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm00_address(rl);
- destval = fetch_data_word(destoffset);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_word_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval,imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm01_address(rl);
- destval = fetch_data_long(destoffset);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_long_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_long(destoffset, destval);
- } else {
- u16 destval,imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm01_address(rl);
- destval = fetch_data_word(destoffset);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_word_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval,imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm10_address(rl);
- destval = fetch_data_long(destoffset);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_long_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_long(destoffset, destval);
- } else {
- u16 destval,imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm10_address(rl);
- destval = fetch_data_word(destoffset);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_word_operation[rh]) (destval, imm);
- if (rh != 7)
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 destval,imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_long_operation[rh]) (*destreg, imm);
- if (rh != 7)
- *destreg = destval;
- } else {
- u16 *destreg;
- u16 destval,imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- imm = (s8) fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- destval = (*opc83_word_operation[rh]) (*destreg, imm);
- if (rh != 7)
- *destreg = destval;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x84
-****************************************************************************/
-static void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("TEST\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_byte(destval, *srcreg);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_byte(destval, *srcreg);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_byte(destval, *srcreg);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_byte(*destreg, *srcreg);
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x85
-****************************************************************************/
-static void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("TEST\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_long(destval, *srcreg);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_word(destval, *srcreg);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_long(destval, *srcreg);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_word(destval, *srcreg);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_long(destval, *srcreg);
- } else {
- u16 destval;
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_word(destval, *srcreg);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_long(*destreg, *srcreg);
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- test_word(*destreg, *srcreg);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x86
-****************************************************************************/
-static void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
- u8 destval;
- u8 tmp;
-
- START_OF_INSTR();
- DECODE_PRINTF("XCHG\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_byte(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_byte(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_byte(destoffset);
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = *destreg;
- *destreg = tmp;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x87
-****************************************************************************/
-static void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("XCHG\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *srcreg;
- u32 destval,tmp;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_long(destoffset, destval);
- } else {
- u16 *srcreg;
- u16 destval,tmp;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *srcreg;
- u32 destval,tmp;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_long(destoffset, destval);
- } else {
- u16 *srcreg;
- u16 destval,tmp;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *srcreg;
- u32 destval,tmp;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_long(destoffset);
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_long(destoffset, destval);
- } else {
- u16 *srcreg;
- u16 destval,tmp;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- destval = fetch_data_word(destoffset);
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = destval;
- destval = tmp;
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
- u32 tmp;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = *destreg;
- *destreg = tmp;
- } else {
- u16 *destreg,*srcreg;
- u16 tmp;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- tmp = *srcreg;
- *srcreg = *destreg;
- *destreg = tmp;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x88
-****************************************************************************/
-static void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_byte(destoffset, *srcreg);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_byte(destoffset, *srcreg);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_byte(destoffset, *srcreg);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x89
-****************************************************************************/
-static void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u32 destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_long(destoffset, *srcreg);
- } else {
- u16 *srcreg;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_word(destoffset, *srcreg);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_long(destoffset, *srcreg);
- } else {
- u16 *srcreg;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_word(destoffset, *srcreg);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_long(destoffset, *srcreg);
- } else {
- u16 *srcreg;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- store_data_word(destoffset, *srcreg);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg,*srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- } else {
- u16 *destreg,*srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8a
-****************************************************************************/
-static void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg, *srcreg;
- uint srcoffset;
- u8 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- break;
- case 1:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- break;
- case 2:
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_byte(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8b
-****************************************************************************/
-static void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 srcval;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_long(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- } else {
- u16 *destreg;
- u16 srcval;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg, *srcreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- } else {
- u16 *destreg, *srcreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8c
-****************************************************************************/
-static void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u16 *destreg, *srcreg;
- uint destoffset;
- u16 destval;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",");
- srcreg = decode_rm_seg_register(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = *srcreg;
- store_data_word(destoffset, destval);
- break;
- case 1:
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",");
- srcreg = decode_rm_seg_register(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = *srcreg;
- store_data_word(destoffset, destval);
- break;
- case 2:
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",");
- srcreg = decode_rm_seg_register(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = *srcreg;
- store_data_word(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",");
- srcreg = decode_rm_seg_register(rh);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8d
-****************************************************************************/
-static void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u16 *srcreg;
- uint destoffset;
-
-/*
- * TODO: Need to handle address size prefix!
- *
- * lea eax,[eax+ebx*2] ??
- */
-
- START_OF_INSTR();
- DECODE_PRINTF("LEA\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *srcreg = (u16)destoffset;
- break;
- case 1:
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *srcreg = (u16)destoffset;
- break;
- case 2:
- srcreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *srcreg = (u16)destoffset;
- break;
- case 3: /* register to register */
- /* undefined. Do nothing. */
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8e
-****************************************************************************/
-static void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u16 *destreg, *srcreg;
- uint srcoffset;
- u16 srcval;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- destreg = decode_rm_seg_register(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- break;
- case 1:
- destreg = decode_rm_seg_register(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- break;
- case 2:
- destreg = decode_rm_seg_register(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- srcval = fetch_data_word(srcoffset);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = srcval;
- break;
- case 3: /* register to register */
- destreg = decode_rm_seg_register(rh);
- DECODE_PRINTF(",");
- srcreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = *srcreg;
- break;
- }
- /*
- * Clean up, and reset all the R_xSP pointers to the correct
- * locations. This is about 3x too much overhead (doing all the
- * segreg ptrs when only one is needed, but this instruction
- * *cannot* be that common, and this isn't too much work anyway.
- */
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x8f
-****************************************************************************/
-static void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("POP\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- if (rh != 0) {
- DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");
- HALT_SYS();
- }
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = pop_long();
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = pop_word();
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = pop_long();
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = pop_word();
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = pop_long();
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- destval = pop_word();
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = pop_long();
- } else {
- u16 *destreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *destreg = pop_word();
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x90
-****************************************************************************/
-static void x86emuOp_nop(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("NOP\n");
- TRACE_AND_STEP();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x91
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_CX(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,ECX\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,CX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_ECX;
- M.x86.R_ECX = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_CX;
- M.x86.R_CX = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x92
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_DX(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,EDX\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,DX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_EDX;
- M.x86.R_EDX = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_DX;
- M.x86.R_DX = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x93
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_BX(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,EBX\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,BX\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_EBX;
- M.x86.R_EBX = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_BX;
- M.x86.R_BX = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x94
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_SP(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,ESP\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,SP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_ESP;
- M.x86.R_ESP = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_SP;
- M.x86.R_SP = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x95
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_BP(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,EBP\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,BP\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_EBP;
- M.x86.R_EBP = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_BP;
- M.x86.R_BP = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x96
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_SI(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,ESI\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,SI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_ESI;
- M.x86.R_ESI = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_SI;
- M.x86.R_SI = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x97
-****************************************************************************/
-static void x86emuOp_xchg_word_AX_DI(u8 X86EMU_UNUSED(op1))
-{
- u32 tmp;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("XCHG\tEAX,EDI\n");
- } else {
- DECODE_PRINTF("XCHG\tAX,DI\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- tmp = M.x86.R_EAX;
- M.x86.R_EAX = M.x86.R_EDI;
- M.x86.R_EDI = tmp;
- } else {
- tmp = M.x86.R_AX;
- M.x86.R_AX = M.x86.R_DI;
- M.x86.R_DI = (u16)tmp;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x98
-****************************************************************************/
-static void x86emuOp_cbw(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("CWDE\n");
- } else {
- DECODE_PRINTF("CBW\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- if (M.x86.R_AX & 0x8000) {
- M.x86.R_EAX |= 0xffff0000;
- } else {
- M.x86.R_EAX &= 0x0000ffff;
- }
- } else {
- if (M.x86.R_AL & 0x80) {
- M.x86.R_AH = 0xff;
- } else {
- M.x86.R_AH = 0x0;
- }
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x99
-****************************************************************************/
-static void x86emuOp_cwd(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("CDQ\n");
- } else {
- DECODE_PRINTF("CWD\n");
- }
- DECODE_PRINTF("CWD\n");
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- if (M.x86.R_EAX & 0x80000000) {
- M.x86.R_EDX = 0xffffffff;
- } else {
- M.x86.R_EDX = 0x0;
- }
- } else {
- if (M.x86.R_AX & 0x8000) {
- M.x86.R_DX = 0xffff;
- } else {
- M.x86.R_DX = 0x0;
- }
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9a
-****************************************************************************/
-static void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 farseg, faroff;
-
- START_OF_INSTR();
- DECODE_PRINTF("CALL\t");
- faroff = fetch_word_imm();
- farseg = fetch_word_imm();
- DECODE_PRINTF2("%04x:", farseg);
- DECODE_PRINTF2("%04x\n", faroff);
- CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR ");
-
- /* XXX
- *
- * Hooked interrupt vectors calling into our "BIOS" will cause
- * problems unless all intersegment stuff is checked for BIOS
- * access. Check needed here. For moment, let it alone.
- */
- TRACE_AND_STEP();
- push_word(M.x86.R_CS);
- M.x86.R_CS = farseg;
- push_word(M.x86.R_IP);
- M.x86.R_IP = faroff;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9b
-****************************************************************************/
-static void x86emuOp_wait(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("WAIT");
- TRACE_AND_STEP();
- /* NADA. */
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9c
-****************************************************************************/
-static void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1))
-{
- u32 flags;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("PUSHFD\n");
- } else {
- DECODE_PRINTF("PUSHF\n");
- }
- TRACE_AND_STEP();
-
- /* clear out *all* bits not representing flags, and turn on real bits */
- flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON;
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- push_long(flags);
- } else {
- push_word((u16)flags);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9d
-****************************************************************************/
-static void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("POPFD\n");
- } else {
- DECODE_PRINTF("POPF\n");
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EFLG = pop_long();
- } else {
- M.x86.R_FLG = pop_word();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9e
-****************************************************************************/
-static void x86emuOp_sahf(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("SAHF\n");
- TRACE_AND_STEP();
- /* clear the lower bits of the flag register */
- M.x86.R_FLG &= 0xffffff00;
- /* or in the AH register into the flags register */
- M.x86.R_FLG |= M.x86.R_AH;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0x9f
-****************************************************************************/
-static void x86emuOp_lahf(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("LAHF\n");
- TRACE_AND_STEP();
- M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff);
- /*undocumented TC++ behavior??? Nope. It's documented, but
- you have too look real hard to notice it. */
- M.x86.R_AH |= 0x2;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa0
-****************************************************************************/
-static void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 offset;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tAL,");
- offset = fetch_word_imm();
- DECODE_PRINTF2("[%04x]\n", offset);
- TRACE_AND_STEP();
- M.x86.R_AL = fetch_data_byte(offset);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa1
-****************************************************************************/
-static void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 offset;
-
- START_OF_INSTR();
- offset = fetch_word_imm();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset);
- } else {
- DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset);
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = fetch_data_long(offset);
- } else {
- M.x86.R_AX = fetch_data_word(offset);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa2
-****************************************************************************/
-static void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 offset;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- offset = fetch_word_imm();
- DECODE_PRINTF2("[%04x],AL\n", offset);
- TRACE_AND_STEP();
- store_data_byte(offset, M.x86.R_AL);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa3
-****************************************************************************/
-static void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 offset;
-
- START_OF_INSTR();
- offset = fetch_word_imm();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset);
- } else {
- DECODE_PRINTF2("MOV\t[%04x],AX\n", offset);
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- store_data_long(offset, M.x86.R_EAX);
- } else {
- store_data_word(offset, M.x86.R_AX);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa4
-****************************************************************************/
-static void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1))
-{
- u8 val;
- u32 count;
- int inc;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOVS\tBYTE\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -1;
- else
- inc = 1;
- TRACE_AND_STEP();
- count = 1;
- if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
- /* dont care whether REPE or REPNE */
- /* move them until CX is ZERO. */
- count = M.x86.R_CX;
- M.x86.R_CX = 0;
- M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
- }
- while (count--) {
- val = fetch_data_byte(M.x86.R_SI);
- store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val);
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa5
-****************************************************************************/
-static void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1))
-{
- u32 val;
- int inc;
- u32 count;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOVS\tDWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -4;
- else
- inc = 4;
- } else {
- DECODE_PRINTF("MOVS\tWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -2;
- else
- inc = 2;
- }
- TRACE_AND_STEP();
- count = 1;
- if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
- /* dont care whether REPE or REPNE */
- /* move them until CX is ZERO. */
- count = M.x86.R_CX;
- M.x86.R_CX = 0;
- M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
- }
- while (count--) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val = fetch_data_long(M.x86.R_SI);
- store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val);
- } else {
- val = fetch_data_word(M.x86.R_SI);
- store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val);
- }
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa6
-****************************************************************************/
-static void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1))
-{
- s8 val1, val2;
- int inc;
-
- START_OF_INSTR();
- DECODE_PRINTF("CMPS\tBYTE\n");
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -1;
- else
- inc = 1;
-
- if (M.x86.mode & SYSMODE_PREFIX_REPE) {
- /* REPE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- val1 = fetch_data_byte(M.x86.R_SI);
- val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_byte(val1, val2);
- M.x86.R_CX -= 1;
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF) == 0)
- break;
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPE;
- } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
- /* REPNE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- val1 = fetch_data_byte(M.x86.R_SI);
- val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_byte(val1, val2);
- M.x86.R_CX -= 1;
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF))
- break; /* zero flag set means equal */
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
- } else {
- val1 = fetch_data_byte(M.x86.R_SI);
- val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_byte(val1, val2);
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa7
-****************************************************************************/
-static void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1))
-{
- u32 val1,val2;
- int inc;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("CMPS\tDWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -4;
- else
- inc = 4;
- } else {
- DECODE_PRINTF("CMPS\tWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -2;
- else
- inc = 2;
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_REPE) {
- /* REPE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val1 = fetch_data_long(M.x86.R_SI);
- val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_long(val1, val2);
- } else {
- val1 = fetch_data_word(M.x86.R_SI);
- val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_word((u16)val1, (u16)val2);
- }
- M.x86.R_CX -= 1;
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF) == 0)
- break;
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPE;
- } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
- /* REPNE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val1 = fetch_data_long(M.x86.R_SI);
- val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_long(val1, val2);
- } else {
- val1 = fetch_data_word(M.x86.R_SI);
- val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_word((u16)val1, (u16)val2);
- }
- M.x86.R_CX -= 1;
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF))
- break; /* zero flag set means equal */
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
- } else {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val1 = fetch_data_long(M.x86.R_SI);
- val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_long(val1, val2);
- } else {
- val1 = fetch_data_word(M.x86.R_SI);
- val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_word((u16)val1, (u16)val2);
- }
- M.x86.R_SI += inc;
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa8
-****************************************************************************/
-static void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- int imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("TEST\tAL,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%04x\n", imm);
- TRACE_AND_STEP();
- test_byte(M.x86.R_AL, (u8)imm);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xa9
-****************************************************************************/
-static void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("TEST\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("TEST\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- test_long(M.x86.R_EAX, srcval);
- } else {
- test_word(M.x86.R_AX, (u16)srcval);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xaa
-****************************************************************************/
-static void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1))
-{
- int inc;
-
- START_OF_INSTR();
- DECODE_PRINTF("STOS\tBYTE\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -1;
- else
- inc = 1;
- TRACE_AND_STEP();
- if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
- /* dont care whether REPE or REPNE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);
- M.x86.R_CX -= 1;
- M.x86.R_DI += inc;
- }
- M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
- } else {
- store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL);
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xab
-****************************************************************************/
-static void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1))
-{
- int inc;
- u32 count;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("STOS\tDWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -4;
- else
- inc = 4;
- } else {
- DECODE_PRINTF("STOS\tWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -2;
- else
- inc = 2;
- }
- TRACE_AND_STEP();
- count = 1;
- if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
- /* dont care whether REPE or REPNE */
- /* move them until CX is ZERO. */
- count = M.x86.R_CX;
- M.x86.R_CX = 0;
- M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
- }
- while (count--) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX);
- } else {
- store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX);
- }
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xac
-****************************************************************************/
-static void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1))
-{
- int inc;
-
- START_OF_INSTR();
- DECODE_PRINTF("LODS\tBYTE\n");
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -1;
- else
- inc = 1;
- if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
- /* dont care whether REPE or REPNE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- M.x86.R_AL = fetch_data_byte(M.x86.R_SI);
- M.x86.R_CX -= 1;
- M.x86.R_SI += inc;
- }
- M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
- } else {
- M.x86.R_AL = fetch_data_byte(M.x86.R_SI);
- M.x86.R_SI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xad
-****************************************************************************/
-static void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1))
-{
- int inc;
- u32 count;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("LODS\tDWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -4;
- else
- inc = 4;
- } else {
- DECODE_PRINTF("LODS\tWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -2;
- else
- inc = 2;
- }
- TRACE_AND_STEP();
- count = 1;
- if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) {
- /* dont care whether REPE or REPNE */
- /* move them until CX is ZERO. */
- count = M.x86.R_CX;
- M.x86.R_CX = 0;
- M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);
- }
- while (count--) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = fetch_data_long(M.x86.R_SI);
- } else {
- M.x86.R_AX = fetch_data_word(M.x86.R_SI);
- }
- M.x86.R_SI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xae
-****************************************************************************/
-static void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1))
-{
- s8 val2;
- int inc;
-
- START_OF_INSTR();
- DECODE_PRINTF("SCAS\tBYTE\n");
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -1;
- else
- inc = 1;
- if (M.x86.mode & SYSMODE_PREFIX_REPE) {
- /* REPE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_byte(M.x86.R_AL, val2);
- M.x86.R_CX -= 1;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF) == 0)
- break;
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPE;
- } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
- /* REPNE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_byte(M.x86.R_AL, val2);
- M.x86.R_CX -= 1;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF))
- break; /* zero flag set means equal */
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
- } else {
- val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_byte(M.x86.R_AL, val2);
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xaf
-****************************************************************************/
-static void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1))
-{
- int inc;
- u32 val;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("SCAS\tDWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -4;
- else
- inc = 4;
- } else {
- DECODE_PRINTF("SCAS\tWORD\n");
- if (ACCESS_FLAG(F_DF)) /* down */
- inc = -2;
- else
- inc = 2;
- }
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_REPE) {
- /* REPE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_long(M.x86.R_EAX, val);
- } else {
- val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_word(M.x86.R_AX, (u16)val);
- }
- M.x86.R_CX -= 1;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF) == 0)
- break;
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPE;
- } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) {
- /* REPNE */
- /* move them until CX is ZERO. */
- while (M.x86.R_CX != 0) {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_long(M.x86.R_EAX, val);
- } else {
- val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_word(M.x86.R_AX, (u16)val);
- }
- M.x86.R_CX -= 1;
- M.x86.R_DI += inc;
- if (ACCESS_FLAG(F_ZF))
- break; /* zero flag set means equal */
- }
- M.x86.mode &= ~SYSMODE_PREFIX_REPNE;
- } else {
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_long(M.x86.R_EAX, val);
- } else {
- val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI);
- cmp_word(M.x86.R_AX, (u16)val);
- }
- M.x86.R_DI += inc;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb0
-****************************************************************************/
-static void x86emuOp_mov_byte_AL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tAL,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_AL = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb1
-****************************************************************************/
-static void x86emuOp_mov_byte_CL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tCL,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_CL = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb2
-****************************************************************************/
-static void x86emuOp_mov_byte_DL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tDL,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_DL = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb3
-****************************************************************************/
-static void x86emuOp_mov_byte_BL_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tBL,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_BL = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb4
-****************************************************************************/
-static void x86emuOp_mov_byte_AH_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tAH,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_AH = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb5
-****************************************************************************/
-static void x86emuOp_mov_byte_CH_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tCH,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_CH = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb6
-****************************************************************************/
-static void x86emuOp_mov_byte_DH_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tDH,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_DH = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb7
-****************************************************************************/
-static void x86emuOp_mov_byte_BH_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\tBH,");
- imm = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", imm);
- TRACE_AND_STEP();
- M.x86.R_BH = imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb8
-****************************************************************************/
-static void x86emuOp_mov_word_AX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tEAX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tAX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EAX = srcval;
- } else {
- M.x86.R_AX = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xb9
-****************************************************************************/
-static void x86emuOp_mov_word_CX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tECX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tCX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ECX = srcval;
- } else {
- M.x86.R_CX = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xba
-****************************************************************************/
-static void x86emuOp_mov_word_DX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tEDX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tDX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDX = srcval;
- } else {
- M.x86.R_DX = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbb
-****************************************************************************/
-static void x86emuOp_mov_word_BX_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tEBX,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tBX,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBX = srcval;
- } else {
- M.x86.R_BX = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbc
-****************************************************************************/
-static void x86emuOp_mov_word_SP_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tESP,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tSP,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESP = srcval;
- } else {
- M.x86.R_SP = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbd
-****************************************************************************/
-static void x86emuOp_mov_word_BP_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tEBP,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tBP,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EBP = srcval;
- } else {
- M.x86.R_BP = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbe
-****************************************************************************/
-static void x86emuOp_mov_word_SI_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tESI,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tSI,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_ESI = srcval;
- } else {
- M.x86.R_SI = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xbf
-****************************************************************************/
-static void x86emuOp_mov_word_DI_IMM(u8 X86EMU_UNUSED(op1))
-{
- u32 srcval;
-
- START_OF_INSTR();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- DECODE_PRINTF("MOV\tEDI,");
- srcval = fetch_long_imm();
- } else {
- DECODE_PRINTF("MOV\tDI,");
- srcval = fetch_word_imm();
- }
- DECODE_PRINTF2("%x\n", srcval);
- TRACE_AND_STEP();
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- M.x86.R_EDI = srcval;
- } else {
- M.x86.R_DI = (u16)srcval;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/* used by opcodes c0, d0, and d2. */
-static u8(*opcD0_byte_operation[])(u8 d, u8 s) =
-{
- rol_byte,
- ror_byte,
- rcl_byte,
- rcr_byte,
- shl_byte,
- shr_byte,
- shl_byte, /* sal_byte === shl_byte by definition */
- sar_byte,
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc0
-****************************************************************************/
-static void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg;
- uint destoffset;
- u8 destval;
- u8 amt;
-
- /*
- * Yet another weirdo special case instruction format. Part of
- * the opcode held below in "RH". Doubly nested case would
- * result, except that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
-
- switch (rh) {
- case 0:
- DECODE_PRINTF("ROL\t");
- break;
- case 1:
- DECODE_PRINTF("ROR\t");
- break;
- case 2:
- DECODE_PRINTF("RCL\t");
- break;
- case 3:
- DECODE_PRINTF("RCR\t");
- break;
- case 4:
- DECODE_PRINTF("SHL\t");
- break;
- case 5:
- DECODE_PRINTF("SHR\t");
- break;
- case 6:
- DECODE_PRINTF("SAL\t");
- break;
- case 7:
- DECODE_PRINTF("SAR\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm00_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, amt);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm01_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, amt);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, amt);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (*destreg, amt);
- *destreg = destval;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/* used by opcodes c1, d1, and d3. */
-static u16(*opcD1_word_operation[])(u16 s, u8 d) =
-{
- rol_word,
- ror_word,
- rcl_word,
- rcr_word,
- shl_word,
- shr_word,
- shl_word, /* sal_byte === shl_byte by definition */
- sar_word,
-};
-
-/* used by opcodes c1, d1, and d3. */
-static u32 (*opcD1_long_operation[])(u32 s, u8 d) =
-{
- rol_long,
- ror_long,
- rcl_long,
- rcr_long,
- shl_long,
- shr_long,
- shl_long, /* sal_byte === shl_byte by definition */
- sar_long,
-};
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc1
-****************************************************************************/
-static void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
- u8 amt;
-
- /*
- * Yet another weirdo special case instruction format. Part of
- * the opcode held below in "RH". Doubly nested case would
- * result, except that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
-
- switch (rh) {
- case 0:
- DECODE_PRINTF("ROL\t");
- break;
- case 1:
- DECODE_PRINTF("ROR\t");
- break;
- case 2:
- DECODE_PRINTF("RCL\t");
- break;
- case 3:
- DECODE_PRINTF("RCR\t");
- break;
- case 4:
- DECODE_PRINTF("SHL\t");
- break;
- case 5:
- DECODE_PRINTF("SHR\t");
- break;
- case 6:
- DECODE_PRINTF("SAL\t");
- break;
- case 7:
- DECODE_PRINTF("SAR\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm00_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (destval, amt);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm00_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (destval, amt);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm01_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (destval, amt);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm01_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (destval, amt);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm10_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (destval, amt);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm10_address(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (destval, amt);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- TRACE_AND_STEP();
- *destreg = (*opcD1_long_operation[rh]) (*destreg, amt);
- } else {
- u16 *destreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- amt = fetch_byte_imm();
- DECODE_PRINTF2(",%x\n", amt);
- TRACE_AND_STEP();
- *destreg = (*opcD1_word_operation[rh]) (*destreg, amt);
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc2
-****************************************************************************/
-static void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("RET\t");
- imm = fetch_word_imm();
- DECODE_PRINTF2("%x\n", imm);
- RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip);
- TRACE_AND_STEP();
- M.x86.R_IP = pop_word();
- M.x86.R_SP += imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc3
-****************************************************************************/
-static void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("RET\n");
- RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip);
- TRACE_AND_STEP();
- M.x86.R_IP = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc4
-****************************************************************************/
-static void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rh, rl;
- u16 *dstreg;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("LES\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- dstreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *dstreg = fetch_data_word(srcoffset);
- M.x86.R_ES = fetch_data_word(srcoffset + 2);
- break;
- case 1:
- dstreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *dstreg = fetch_data_word(srcoffset);
- M.x86.R_ES = fetch_data_word(srcoffset + 2);
- break;
- case 2:
- dstreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *dstreg = fetch_data_word(srcoffset);
- M.x86.R_ES = fetch_data_word(srcoffset + 2);
- break;
- case 3: /* register to register */
- /* UNDEFINED! */
- TRACE_AND_STEP();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc5
-****************************************************************************/
-static void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rh, rl;
- u16 *dstreg;
- uint srcoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("LDS\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- switch (mod) {
- case 0:
- dstreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm00_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *dstreg = fetch_data_word(srcoffset);
- M.x86.R_DS = fetch_data_word(srcoffset + 2);
- break;
- case 1:
- dstreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm01_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *dstreg = fetch_data_word(srcoffset);
- M.x86.R_DS = fetch_data_word(srcoffset + 2);
- break;
- case 2:
- dstreg = DECODE_RM_WORD_REGISTER(rh);
- DECODE_PRINTF(",");
- srcoffset = decode_rm10_address(rl);
- DECODE_PRINTF("\n");
- TRACE_AND_STEP();
- *dstreg = fetch_data_word(srcoffset);
- M.x86.R_DS = fetch_data_word(srcoffset + 2);
- break;
- case 3: /* register to register */
- /* UNDEFINED! */
- TRACE_AND_STEP();
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc6
-****************************************************************************/
-static void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg;
- uint destoffset;
- u8 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- if (rh != 0) {
- DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n");
- HALT_SYS();
- }
- switch (mod) {
- case 0:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm00_address(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%2x\n", imm);
- TRACE_AND_STEP();
- store_data_byte(destoffset, imm);
- break;
- case 1:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm01_address(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%2x\n", imm);
- TRACE_AND_STEP();
- store_data_byte(destoffset, imm);
- break;
- case 2:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%2x\n", imm);
- TRACE_AND_STEP();
- store_data_byte(destoffset, imm);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- imm = fetch_byte_imm();
- DECODE_PRINTF2(",%2x\n", imm);
- TRACE_AND_STEP();
- *destreg = imm;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc7
-****************************************************************************/
-static void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- START_OF_INSTR();
- DECODE_PRINTF("MOV\t");
- FETCH_DECODE_MODRM(mod, rh, rl);
- if (rh != 0) {
- DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n");
- HALT_SYS();
- }
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm00_address(rl);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- store_data_long(destoffset, imm);
- } else {
- u16 imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm00_address(rl);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- store_data_word(destoffset, imm);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm01_address(rl);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- store_data_long(destoffset, imm);
- } else {
- u16 imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm01_address(rl);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- store_data_word(destoffset, imm);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 imm;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm10_address(rl);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- store_data_long(destoffset, imm);
- } else {
- u16 imm;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm10_address(rl);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- store_data_word(destoffset, imm);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 *destreg;
- u32 imm;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- imm = fetch_long_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- *destreg = imm;
- } else {
- u16 *destreg;
- u16 imm;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- imm = fetch_word_imm();
- DECODE_PRINTF2(",%x\n", imm);
- TRACE_AND_STEP();
- *destreg = imm;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc8
-****************************************************************************/
-static void x86emuOp_enter(u8 X86EMU_UNUSED(op1))
-{
- u16 local,frame_pointer;
- u8 nesting;
- int i;
-
- START_OF_INSTR();
- local = fetch_word_imm();
- nesting = fetch_byte_imm();
- DECODE_PRINTF2("ENTER %x\n", local);
- DECODE_PRINTF2(",%x\n", nesting);
- TRACE_AND_STEP();
- push_word(M.x86.R_BP);
- frame_pointer = M.x86.R_SP;
- if (nesting > 0) {
- for (i = 1; i < nesting; i++) {
- M.x86.R_BP -= 2;
- push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP));
- }
- push_word(frame_pointer);
- }
- M.x86.R_BP = frame_pointer;
- M.x86.R_SP = (u16)(M.x86.R_SP - local);
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xc9
-****************************************************************************/
-static void x86emuOp_leave(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("LEAVE\n");
- TRACE_AND_STEP();
- M.x86.R_SP = M.x86.R_BP;
- M.x86.R_BP = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xca
-****************************************************************************/
-static void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1))
-{
- u16 imm;
-
- START_OF_INSTR();
- DECODE_PRINTF("RETF\t");
- imm = fetch_word_imm();
- DECODE_PRINTF2("%x\n", imm);
- RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip);
- TRACE_AND_STEP();
- M.x86.R_IP = pop_word();
- M.x86.R_CS = pop_word();
- M.x86.R_SP += imm;
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcb
-****************************************************************************/
-static void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("RETF\n");
- RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip);
- TRACE_AND_STEP();
- M.x86.R_IP = pop_word();
- M.x86.R_CS = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcc
-****************************************************************************/
-static void x86emuOp_int3(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("INT 3\n");
- TRACE_AND_STEP();
- if (_X86EMU_intrTab[3]) {
- (*_X86EMU_intrTab[3])(3);
- } else {
- push_word((u16)M.x86.R_FLG);
- CLEAR_FLAG(F_IF);
- CLEAR_FLAG(F_TF);
- push_word(M.x86.R_CS);
- M.x86.R_CS = mem_access_word(3 * 4 + 2);
- push_word(M.x86.R_IP);
- M.x86.R_IP = mem_access_word(3 * 4);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcd
-****************************************************************************/
-static void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1))
-{
- u8 intnum;
-
- START_OF_INSTR();
- DECODE_PRINTF("INT\t");
- intnum = fetch_byte_imm();
- DECODE_PRINTF2("%x\n", intnum);
- TRACE_AND_STEP();
- if (_X86EMU_intrTab[intnum]) {
- (*_X86EMU_intrTab[intnum])(intnum);
- } else {
- push_word((u16)M.x86.R_FLG);
- CLEAR_FLAG(F_IF);
- CLEAR_FLAG(F_TF);
- push_word(M.x86.R_CS);
- M.x86.R_CS = mem_access_word(intnum * 4 + 2);
- push_word(M.x86.R_IP);
- M.x86.R_IP = mem_access_word(intnum * 4);
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xce
-****************************************************************************/
-static void x86emuOp_into(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("INTO\n");
- TRACE_AND_STEP();
- if (ACCESS_FLAG(F_OF)) {
- if (_X86EMU_intrTab[4]) {
- (*_X86EMU_intrTab[4])(4);
- } else {
- push_word((u16)M.x86.R_FLG);
- CLEAR_FLAG(F_IF);
- CLEAR_FLAG(F_TF);
- push_word(M.x86.R_CS);
- M.x86.R_CS = mem_access_word(4 * 4 + 2);
- push_word(M.x86.R_IP);
- M.x86.R_IP = mem_access_word(4 * 4);
- }
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xcf
-****************************************************************************/
-static void x86emuOp_iret(u8 X86EMU_UNUSED(op1))
-{
- START_OF_INSTR();
- DECODE_PRINTF("IRET\n");
-
- TRACE_AND_STEP();
-
- M.x86.R_IP = pop_word();
- M.x86.R_CS = pop_word();
- M.x86.R_FLG = pop_word();
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd0
-****************************************************************************/
-static void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg;
- uint destoffset;
- u8 destval;
-
- /*
- * Yet another weirdo special case instruction format. Part of
- * the opcode held below in "RH". Doubly nested case would
- * result, except that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
- switch (rh) {
- case 0:
- DECODE_PRINTF("ROL\t");
- break;
- case 1:
- DECODE_PRINTF("ROR\t");
- break;
- case 2:
- DECODE_PRINTF("RCL\t");
- break;
- case 3:
- DECODE_PRINTF("RCR\t");
- break;
- case 4:
- DECODE_PRINTF("SHL\t");
- break;
- case 5:
- DECODE_PRINTF("SHR\t");
- break;
- case 6:
- DECODE_PRINTF("SAL\t");
- break;
- case 7:
- DECODE_PRINTF("SAR\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, 1);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, 1);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, 1);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",1\n");
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (*destreg, 1);
- *destreg = destval;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd1
-****************************************************************************/
-static void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
-
- /*
- * Yet another weirdo special case instruction format. Part of
- * the opcode held below in "RH". Doubly nested case would
- * result, except that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
- switch (rh) {
- case 0:
- DECODE_PRINTF("ROL\t");
- break;
- case 1:
- DECODE_PRINTF("ROR\t");
- break;
- case 2:
- DECODE_PRINTF("RCL\t");
- break;
- case 3:
- DECODE_PRINTF("RCR\t");
- break;
- case 4:
- DECODE_PRINTF("SHL\t");
- break;
- case 5:
- DECODE_PRINTF("SHR\t");
- break;
- case 6:
- DECODE_PRINTF("SAL\t");
- break;
- case 7:
- DECODE_PRINTF("SAR\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- switch (mod) {
- case 0:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (destval, 1);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (destval, 1);
- store_data_word(destoffset, destval);
- }
- break;
- case 1:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (destval, 1);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- DECODE_PRINTF("WORD PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (destval, 1);
- store_data_word(destoffset, destval);
- }
- break;
- case 2:
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
-
- DECODE_PRINTF("DWORD PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_long(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (destval, 1);
- store_data_long(destoffset, destval);
- } else {
- u16 destval;
-
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",1\n");
- destval = fetch_data_word(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (destval, 1);
- store_data_word(destoffset, destval);
- }
- break;
- case 3: /* register to register */
- if (M.x86.mode & SYSMODE_PREFIX_DATA) {
- u32 destval;
- u32 *destreg;
-
- destreg = DECODE_RM_LONG_REGISTER(rl);
- DECODE_PRINTF(",1\n");
- TRACE_AND_STEP();
- destval = (*opcD1_long_operation[rh]) (*destreg, 1);
- *destreg = destval;
- } else {
- u16 destval;
- u16 *destreg;
-
- destreg = DECODE_RM_WORD_REGISTER(rl);
- DECODE_PRINTF(",1\n");
- TRACE_AND_STEP();
- destval = (*opcD1_word_operation[rh]) (*destreg, 1);
- *destreg = destval;
- }
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd2
-****************************************************************************/
-static void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- u8 *destreg;
- uint destoffset;
- u8 destval;
- u8 amt;
-
- /*
- * Yet another weirdo special case instruction format. Part of
- * the opcode held below in "RH". Doubly nested case would
- * result, except that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
- switch (rh) {
- case 0:
- DECODE_PRINTF("ROL\t");
- break;
- case 1:
- DECODE_PRINTF("ROR\t");
- break;
- case 2:
- DECODE_PRINTF("RCL\t");
- break;
- case 3:
- DECODE_PRINTF("RCR\t");
- break;
- case 4:
- DECODE_PRINTF("SHL\t");
- break;
- case 5:
- DECODE_PRINTF("SHR\t");
- break;
- case 6:
- DECODE_PRINTF("SAL\t");
- break;
- case 7:
- DECODE_PRINTF("SAR\t");
- break;
- }
- }
-#endif
- /* know operation, decode the mod byte to find the addressing
- mode. */
- amt = M.x86.R_CL;
- switch (mod) {
- case 0:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm00_address(rl);
- DECODE_PRINTF(",CL\n");
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, amt);
- store_data_byte(destoffset, destval);
- break;
- case 1:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm01_address(rl);
- DECODE_PRINTF(",CL\n");
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, amt);
- store_data_byte(destoffset, destval);
- break;
- case 2:
- DECODE_PRINTF("BYTE PTR ");
- destoffset = decode_rm10_address(rl);
- DECODE_PRINTF(",CL\n");
- destval = fetch_data_byte(destoffset);
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (destval, amt);
- store_data_byte(destoffset, destval);
- break;
- case 3: /* register to register */
- destreg = DECODE_RM_BYTE_REGISTER(rl);
- DECODE_PRINTF(",CL\n");
- TRACE_AND_STEP();
- destval = (*opcD0_byte_operation[rh]) (*destreg, amt);
- *destreg = destval;
- break;
- }
- DECODE_CLEAR_SEGOVR();
- END_OF_INSTR();
-}
-
-/****************************************************************************
-REMARKS:
-Handles opcode 0xd3
-****************************************************************************/
-static void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1))
-{
- int mod, rl, rh;
- uint destoffset;
- u8 amt;
-
- /*
- * Yet another weirdo special case instruction format. Part of
- * the opcode held below in "RH". Doubly nested case would
- * result, except that the decoded instruction
- */
- START_OF_INSTR();
- FETCH_DECODE_MODRM(mod, rh, rl);
-#ifdef DEBUG
- if (DEBUG_DECODE()) {
- /* XXX DECODE_PRINTF may be changed to something more
- general, so that it is important to leave the strings
- in the same format, even though the result is that the
- above test is done twice. */
- switch (rh) {