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authorMystery Man <unknown@mandriva.org>2002-07-31 23:10:55 +0000
committerMystery Man <unknown@mandriva.org>2002-07-31 23:10:55 +0000
commit6b5bb447b11a31fc0961c20485505a633c9ab4eb (patch)
treeeae73bee290e1e328b539f7649818d7584ee667e /mdk-stage1/dietlibc/sparc
parent79d226c48d6de4f26c604ddbd0ce769a58d548c6 (diff)
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This commit was manufactured by cvs2svn to create tag 'V1_1_8_16mdk'.V1_1_8_16mdk
Diffstat (limited to 'mdk-stage1/dietlibc/sparc')
-rw-r--r--mdk-stage1/dietlibc/sparc/Makefile.add3
-rw-r--r--mdk-stage1/dietlibc/sparc/__longjmp.S67
-rw-r--r--mdk-stage1/dietlibc/sparc/__testandset.S6
-rw-r--r--mdk-stage1/dietlibc/sparc/clone.S45
-rw-r--r--mdk-stage1/dietlibc/sparc/fork.S25
-rw-r--r--mdk-stage1/dietlibc/sparc/mmap.c43
-rw-r--r--mdk-stage1/dietlibc/sparc/pipe.S26
-rw-r--r--mdk-stage1/dietlibc/sparc/setjmp.S37
-rw-r--r--mdk-stage1/dietlibc/sparc/shmat.c19
-rw-r--r--mdk-stage1/dietlibc/sparc/start.S46
-rw-r--r--mdk-stage1/dietlibc/sparc/udiv.S363
-rw-r--r--mdk-stage1/dietlibc/sparc/umul.S170
-rw-r--r--mdk-stage1/dietlibc/sparc/unified.S28
-rw-r--r--mdk-stage1/dietlibc/sparc/urem.S362
14 files changed, 0 insertions, 1240 deletions
diff --git a/mdk-stage1/dietlibc/sparc/Makefile.add b/mdk-stage1/dietlibc/sparc/Makefile.add
deleted file mode 100644
index 0de05b1db..000000000
--- a/mdk-stage1/dietlibc/sparc/Makefile.add
+++ /dev/null
@@ -1,3 +0,0 @@
-
-CFLAGS+=-mcpu=supersparc -Os
-VPATH:=sparc:syscalls.s:$(VPATH)
diff --git a/mdk-stage1/dietlibc/sparc/__longjmp.S b/mdk-stage1/dietlibc/sparc/__longjmp.S
deleted file mode 100644
index 72e001a2f..000000000
--- a/mdk-stage1/dietlibc/sparc/__longjmp.S
+++ /dev/null
@@ -1,67 +0,0 @@
-#include <setjmp.h>
-
-#define JB_SP 0
-#define JB_FP 1
-#define JB_PC 2
-
-#define ENV(base,reg) [%base + (reg * 4)]
-#define ST_FLUSH_WINDOWS 3
-#define RW_FP [%fp + 0x48]
-
-.text
-.global __longjmp
-__longjmp:
- /* Store our arguments in global registers so we can still
- use them while unwinding frames and their register windows. */
-
- ld ENV(o0,JB_FP), %g3 /* Cache target FP in register %g3. */
- mov %o0, %g1 /* ENV in %g1 */
- orcc %o1, %g0, %g2 /* VAL in %g2 */
- be,a 0f /* Branch if zero; else skip delay slot. */
- mov 1, %g2 /* Delay slot only hit if zero: VAL = 1. */
-0:
- xor %fp, %g3, %o0
- add %fp, 512, %o1
- andncc %o0, 4095, %o0
- bne .Lthread
- cmp %o1, %g3
- bl .Lthread
-
- /* Now we will loop, unwinding the register windows up the stack
- until the restored %fp value matches the target value in %g3. */
-
-.Lloop:
- cmp %fp, %g3 /* Have we reached the target frame? */
- bl,a .Lloop /* Loop while current fp is below target. */
- restore /* Unwind register window in delay slot. */
- be,a .Lfound /* Better have hit it exactly. */
- ld ENV(g1,JB_SP), %o0 /* Delay slot: extract target SP. */
-
-.Lthread:
- /*
- * Do a "flush register windows trap". The trap handler in the
- * kernel writes all the register windows to their stack slots, and
- * marks them all as invalid (needing to be sucked up from the
- * stack when used). This ensures that all information needed to
- * unwind to these callers is in memory, not in the register
- * windows.
- */
- ta ST_FLUSH_WINDOWS
- ld ENV(g1,JB_PC), %o7 /* Set return PC. */
- ld ENV(g1,JB_SP), %fp /* Set saved SP on restore below. */
- sub %fp, 64, %sp /* Allocate a register frame. */
- st %g3, RW_FP /* Set saved FP on restore below. */
- retl
- restore %g2, 0, %o0 /* Restore values from above register frame. */
-
-.Lfound:
- /* We have unwound register windows so %fp matches the target. */
- mov %o0, %sp /* OK, install new SP. */
-
-.Lsp_ok:
- ld ENV(g1,JB_PC), %o0 /* Extract target return PC. */
- jmp %o0 + 8 /* Return there. */
- mov %g2, %o0 /* Delay slot: set return value. */
-
-.size __longjmp, . - __longjmp
-
diff --git a/mdk-stage1/dietlibc/sparc/__testandset.S b/mdk-stage1/dietlibc/sparc/__testandset.S
deleted file mode 100644
index 84f6cf597..000000000
--- a/mdk-stage1/dietlibc/sparc/__testandset.S
+++ /dev/null
@@ -1,6 +0,0 @@
-.text
-.align 4
-.global __testandset
-__testandset:
- retl
- ldstub [%o0], %o0
diff --git a/mdk-stage1/dietlibc/sparc/clone.S b/mdk-stage1/dietlibc/sparc/clone.S
deleted file mode 100644
index 58b438249..000000000
--- a/mdk-stage1/dietlibc/sparc/clone.S
+++ /dev/null
@@ -1,45 +0,0 @@
-#include <asm/errno.h>
-#include <asm/unistd.h>
-
-.text
-.align 4
-.weak clone
-clone:
-.global __clone
-__clone:
- save %sp, -96, %sp
-
- tst %i0 /* check for function pointer */
- be .Lerror
- tst %i1 /* check for stack pointer */
- be .Lerror
- nop
-
- mov %i1, %o1 /* child-stack */
- mov %i2, %o0 /* clone-flags */
- mov __NR_clone, %g1
- ta 0x10 /* syscall: clone */
- bcs .Lerror
-
- tst %o1
- bne .Lstart /* we are the child :) */
- nop
- mov %o0, %i0 /* return child pid */
- ret
- restore
-
-.Lerror:
- call __errno_location
- nop
- mov EINVAL, %l0
- st %l0, [%o0]
- ret
- restore %g0, -1, %o0
-
-.Lstart:
- call %i0 /* call child-function */
- mov %i3, %o0 /* put arg in the right place for the child */
-
- call _exit /* child returned */
- nop
-
diff --git a/mdk-stage1/dietlibc/sparc/fork.S b/mdk-stage1/dietlibc/sparc/fork.S
deleted file mode 100644
index 869c9b30c..000000000
--- a/mdk-stage1/dietlibc/sparc/fork.S
+++ /dev/null
@@ -1,25 +0,0 @@
-#include "syscalls.h"
-
-.text
-.weak fork
-fork:
-.global __libc_fork
-__libc_fork:
- mov 2, %g1
- ta 0x10
- bcc,a 1f
- nop
- save %sp, -96, %sp
-#ifdef WANT_THREAD_SAVE
- call __errno_location
- nop
-#else
- sethi %hi(errno), %o0
- or %o0, %lo(errno), %o0
-#endif
- st %i0, [ %o0 ]
- retl
- restore %g0, -1, %o0
-1: dec %o1
- retl
- and %o0, %o1, %o0
diff --git a/mdk-stage1/dietlibc/sparc/mmap.c b/mdk-stage1/dietlibc/sparc/mmap.c
deleted file mode 100644
index 25ebdc24e..000000000
--- a/mdk-stage1/dietlibc/sparc/mmap.c
+++ /dev/null
@@ -1,43 +0,0 @@
-#include <linux/types.h>
-#include <linux/unistd.h>
-
-#define __SYSCALL_STRING \
- "ta 0x10;" \
- "bcs 2f;" \
- " nop;" \
- "1:" \
- ".subsection 2;" \
- "2:" \
- "save %%sp, -192, %%sp;" \
- "call __errno_location;" \
- " nop;" \
- "st %%i0,[%%o0];" \
- "ba 1b;" \
- " restore %%g0, -1, %%o0;" \
- ".previous;"
-
-#define __SYSCALL_CLOBBERS "g2", "g3", "g4", "g5", "g7", \
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
- "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
- "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
- "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
- "cc", "memory"
-
-#define inline_syscall6(name,arg1,arg2,arg3,arg4,arg5,arg6) \
-({ \
- register long __o0 __asm__ ("o0") = (long)(arg1); \
- register long __o1 __asm__ ("o1") = (long)(arg2); \
- register long __o2 __asm__ ("o2") = (long)(arg3); \
- register long __o3 __asm__ ("o3") = (long)(arg4); \
- register long __o4 __asm__ ("o4") = (long)(arg5); \
- register long __o5 __asm__ ("o5") = (long)(arg6); \
- register long __g1 __asm__ ("g1") = __NR_##name; \
- __asm__ (__SYSCALL_STRING : "=r" (__g1), "=r" (__o0) : \
- "0" (__g1), "1" (__o0), "r" (__o1), "r" (__o2), \
- "r" (__o3), "r" (__o4), "r" (__o5) : \
- __SYSCALL_CLOBBERS); \
- __o0; \
-})
-int mmap(void*start,size_t length,int prot,int flags,int fd,off_t offset) {
- return inline_syscall6(mmap,start,length,prot,flags,fd,offset);
-}
diff --git a/mdk-stage1/dietlibc/sparc/pipe.S b/mdk-stage1/dietlibc/sparc/pipe.S
deleted file mode 100644
index 820da2570..000000000
--- a/mdk-stage1/dietlibc/sparc/pipe.S
+++ /dev/null
@@ -1,26 +0,0 @@
-#include "syscalls.h"
-
-.text
-.global pipe
-pipe:
- mov %o0, %o2
- mov __NR_pipe, %g1
- ta 0x10
- bcc,a 1f
- nop
- save %sp, -96, %sp
-#ifdef WANT_THREAD_SAVE
- call __errno_location
- nop
-#else
- sethi %hi(errno), %o0
- or %o0, %lo(errno), %o0
-#endif
- st %i0, [ %o0 ]
- ret
- restore %g0, -1, %o0
-
-1: st %o0, [ %o2 ]
- st %o1, [ %o2 + 4 ]
- retl
- mov %g0, %o0
diff --git a/mdk-stage1/dietlibc/sparc/setjmp.S b/mdk-stage1/dietlibc/sparc/setjmp.S
deleted file mode 100644
index efc5a7013..000000000
--- a/mdk-stage1/dietlibc/sparc/setjmp.S
+++ /dev/null
@@ -1,37 +0,0 @@
-#include <setjmp.h>
-
-#define JB_SP 0
-#define JB_FP 1
-#define JB_PC 2
-
-#define ST_FLUSH_WINDOWS 0x03
-
-.section .rodata
-.text
-.globl __setjmp
-__setjmp:
- b 1f
- set 0, %o1
-.size __setjmp,.-__setjmp
-
-.globl setjmp
-setjmp:
- set 1, %o1
-.size setjmp,.-setjmp
-
-.globl __sigsetjmp
-__sigsetjmp:
-1:
- /* Save our PC, SP and FP. Save the signal mask if requested with
- a tail-call for simplicity; it always returns zero. */
- ta ST_FLUSH_WINDOWS
-
- st %o7, [%o0 + (JB_PC * 4)]
- st %sp, [%o0 + (JB_SP * 4)]
- st %fp, [%o0 + (JB_FP * 4)]
-
- mov %o7, %g1
- call __sigjmp_save
- mov %g1, %o7
-.size __sigsetjmp,.-__sigsetjmp
-
diff --git a/mdk-stage1/dietlibc/sparc/shmat.c b/mdk-stage1/dietlibc/sparc/shmat.c
deleted file mode 100644
index 73b2d89a9..000000000
--- a/mdk-stage1/dietlibc/sparc/shmat.c
+++ /dev/null
@@ -1,19 +0,0 @@
-#include <sys/types.h>
-#include <sys/ipc.h>
-#include <sys/shm.h>
-#include <asm/ipc.h>
-
-extern void* __ipc();
-
-#ifndef PAGE_SIZE
-#define PAGE_SIZE 4096
-#endif
-
-void* shmat(int shmid,const void* shmaddr,int shmflg) {
- void* raddr;
- register void* result;
- result=__ipc(SHMAT,shmid,shmflg,&raddr,shmaddr);
- if ((unsigned long)result <= -(unsigned long)PAGE_SIZE)
- result=raddr;
- return result;
-}
diff --git a/mdk-stage1/dietlibc/sparc/start.S b/mdk-stage1/dietlibc/sparc/start.S
deleted file mode 100644
index e948aaddc..000000000
--- a/mdk-stage1/dietlibc/sparc/start.S
+++ /dev/null
@@ -1,46 +0,0 @@
-#include "start.h"
-
-#ifdef __sparc__
- .section ".text"
- .align 4
- .global _start
- .type _start,@function
-_start:
-
- /* Terminate the stack frame, and reserve space for functions to
- drop their arguments. */
- mov %g0, %fp
- sub %sp, 6*4, %sp
-
- /* Extract the arguments and environment as encoded on the stack. The
- argument info starts after one register window (16 words) past the SP. */
- ld [%sp+22*4], %o0
- add %sp, 23*4, %o1
- add %o1, %o0, %o2
- add %o2, %o0, %o2
- add %o2, %o0, %o2
- add %o2, %o0, %o2
- add %o2, 4, %o2
-
- sethi %hi(environ), %o3
- or %o3, %lo(environ), %o3
- st %o2, [%o3]
-
- /* When starting a binary via the dynamic linker, %g1 contains the
- address of the shared library termination function, which will be
- registered with atexit(). If we are statically linked, this will
- be NULL. */
-
- /* Let libc do the rest of the initialization, and call main. */
- call main
- mov %g1, %o5
-
- b exit
- mov %o0, %i0
-
- /* Die very horribly if exit returns. */
- unimp
-
- .size _start, .-_start
-#endif
-
diff --git a/mdk-stage1/dietlibc/sparc/udiv.S b/mdk-stage1/dietlibc/sparc/udiv.S
deleted file mode 100644
index 87479e7bd..000000000
--- a/mdk-stage1/dietlibc/sparc/udiv.S
+++ /dev/null
@@ -1,363 +0,0 @@
-#ifdef __sparc__
- /* This file is generated from divrem.m4; DO NOT EDIT! */
-/*
- * Division and remainder, from Appendix E of the Sparc Version 8
- * Architecture Manual, with fixes from Gordon Irlam.
- */
-
-/*
- * Input: dividend and divisor in %o0 and %o1 respectively.
- *
- * m4 parameters:
- * .udiv name of function to generate
- * div div=div => %o0 / %o1; div=rem => %o0 % %o1
- * false false=true => signed; false=false => unsigned
- *
- * Algorithm parameters:
- * N how many bits per iteration we try to get (4)
- * WORDSIZE total number of bits (32)
- *
- * Derived constants:
- * TOPBITS number of bits in the top decade of a number
- *
- * Important variables:
- * Q the partial quotient under development (initially 0)
- * R the remainder so far, initially the dividend
- * ITER number of main division loop iterations required;
- * equal to ceil(log2(quotient) / N). Note that this
- * is the log base (2^N) of the quotient.
- * V the current comparand, initially divisor*2^(ITER*N-1)
- *
- * Cost:
- * Current estimate for non-large dividend is
- * ceil(log2(quotient) / N) * (10 + 7N/2) + C
- * A large dividend is one greater than 2^(31-TOPBITS) and takes a
- * different path, as the upper bits of the quotient must be developed
- * one bit at a time.
- */
-
-
-
-#define C_LABEL(name) name:
-
-#define C_SYMBOL_NAME(name) name
-
-#define ENTRY(name) \
- .global C_SYMBOL_NAME(name); \
- .align 4;\
- C_LABEL(name);\
- .type name,@function;
-
-#define LOC(name) . ## L ## name
-
-#define END(name) \
- .size name, . - name
-
-#define ST_DIV0 0x02
-
-ENTRY(.udiv)
-
- ! Ready to divide. Compute size of quotient; scale comparand.
- orcc %o1, %g0, %o5
- bne 1f
- mov %o0, %o3
-
- ! Divide by zero trap. If it returns, return 0 (about as
- ! wrong as possible, but that is what SunOS does...).
- ta ST_DIV0
- retl
- clr %o0
-
-1:
- cmp %o3, %o5 ! if %o1 exceeds %o0, done
- blu LOC(got_result) ! (and algorithm fails otherwise)
- clr %o2
- sethi %hi(1 << (32 - 4 - 1)), %g1
- cmp %o3, %g1
- blu LOC(not_really_big)
- clr %o4
-
- ! Here the dividend is >= 2**(31-N) or so. We must be careful here,
- ! as our usual N-at-a-shot divide step will cause overflow and havoc.
- ! The number of bits in the result here is N*ITER+SC, where SC <= N.
- ! Compute ITER in an unorthodox manner: know we need to shift V into
- ! the top decade: so do not even bother to compare to R.
- 1:
- cmp %o5, %g1
- bgeu 3f
- mov 1, %g2
- sll %o5, 4, %o5
- b 1b
- add %o4, 1, %o4
-
- ! Now compute %g2.
- 2: addcc %o5, %o5, %o5
- bcc LOC(not_too_big)
- add %g2, 1, %g2
-
- ! We get here if the %o1 overflowed while shifting.
- ! This means that %o3 has the high-order bit set.
- ! Restore %o5 and subtract from %o3.
- sll %g1, 4, %g1 ! high order bit
- srl %o5, 1, %o5 ! rest of %o5
- add %o5, %g1, %o5
- b LOC(do_single_div)
- sub %g2, 1, %g2
-
- LOC(not_too_big):
- 3: cmp %o5, %o3
- blu 2b
- nop
- be LOC(do_single_div)
- nop
- /* NB: these are commented out in the V8-Sparc manual as well */
- /* (I do not understand this) */
- ! %o5 > %o3: went too far: back up 1 step
- ! srl %o5, 1, %o5
- ! dec %g2
- ! do single-bit divide steps
- !
- ! We have to be careful here. We know that %o3 >= %o5, so we can do the
- ! first divide step without thinking. BUT, the others are conditional,
- ! and are only done if %o3 >= 0. Because both %o3 and %o5 may have the high-
- ! order bit set in the first step, just falling into the regular
- ! division loop will mess up the first time around.
- ! So we unroll slightly...
- LOC(do_single_div):
- subcc %g2, 1, %g2
- bl LOC(end_regular_divide)
- nop
- sub %o3, %o5, %o3
- mov 1, %o2
- b LOC(end_single_divloop)
- nop
- LOC(single_divloop):
- sll %o2, 1, %o2
- bl 1f
- srl %o5, 1, %o5
- ! %o3 >= 0
- sub %o3, %o5, %o3
- b 2f
- add %o2, 1, %o2
- 1: ! %o3 < 0
- add %o3, %o5, %o3
- sub %o2, 1, %o2
- 2:
- LOC(end_single_divloop):
- subcc %g2, 1, %g2
- bge LOC(single_divloop)
- tst %o3
- b,a LOC(end_regular_divide)
-
-LOC(not_really_big):
-1:
- sll %o5, 4, %o5
- cmp %o5, %o3
- bleu 1b
- addcc %o4, 1, %o4
- be LOC(got_result)
- sub %o4, 1, %o4
-
- tst %o3 ! set up for initial iteration
-LOC(divloop):
- sll %o2, 4, %o2
- ! depth 1, accumulated bits 0
- bl LOC(1.16)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 2, accumulated bits 1
- bl LOC(2.17)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 3, accumulated bits 3
- bl LOC(3.19)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits 7
- bl LOC(4.23)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (7*2+1), %o2
-
-LOC(4.23):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (7*2-1), %o2
-
-
-LOC(3.19):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits 5
- bl LOC(4.21)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (5*2+1), %o2
-
-LOC(4.21):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (5*2-1), %o2
-
-
-
-LOC(2.17):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 3, accumulated bits 1
- bl LOC(3.17)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits 3
- bl LOC(4.19)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (3*2+1), %o2
-
-LOC(4.19):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (3*2-1), %o2
-
-
-LOC(3.17):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits 1
- bl LOC(4.17)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (1*2+1), %o2
-
-LOC(4.17):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (1*2-1), %o2
-
-
-
-
-LOC(1.16):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 2, accumulated bits -1
- bl LOC(2.15)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 3, accumulated bits -1
- bl LOC(3.15)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits -1
- bl LOC(4.15)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-1*2+1), %o2
-
-LOC(4.15):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-1*2-1), %o2
-
-
-LOC(3.15):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits -3
- bl LOC(4.13)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-3*2+1), %o2
-
-LOC(4.13):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-3*2-1), %o2
-
-
-
-LOC(2.15):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 3, accumulated bits -3
- bl LOC(3.13)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits -5
- bl LOC(4.11)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-5*2+1), %o2
-
-LOC(4.11):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-5*2-1), %o2
-
-
-LOC(3.13):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits -7
- bl LOC(4.9)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-7*2+1), %o2
-
-LOC(4.9):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-7*2-1), %o2
-
-
-
-
- 9:
-LOC(end_regular_divide):
- subcc %o4, 1, %o4
- bge LOC(divloop)
- tst %o3
- bl,a LOC(got_result)
- ! non-restoring fixup here (one instruction only!)
- sub %o2, 1, %o2
-
-
-LOC(got_result):
-
- retl
- mov %o2, %o0
-
-END(.udiv)
-
-#endif
diff --git a/mdk-stage1/dietlibc/sparc/umul.S b/mdk-stage1/dietlibc/sparc/umul.S
deleted file mode 100644
index 15038ab2a..000000000
--- a/mdk-stage1/dietlibc/sparc/umul.S
+++ /dev/null
@@ -1,170 +0,0 @@
-#ifdef __sparc__
-/*
- * Unsigned multiply. Returns %o0 * %o1 in %o1%o0 (i.e., %o1 holds the
- * upper 32 bits of the 64-bit product).
- *
- * This code optimizes short (less than 13-bit) multiplies. Short
- * multiplies require 25 instruction cycles, and long ones require
- * 45 instruction cycles.
- *
- * On return, overflow has occurred (%o1 is not zero) if and only if
- * the Z condition code is clear, allowing, e.g., the following:
- *
- * call .umul
- * nop
- * bnz overflow (or tnz)
- */
-
-#define C_LABEL(name) name:
-
-#define C_SYMBOL_NAME(name) name
-
-#define ENTRY(name) \
- .global C_SYMBOL_NAME(name); \
- .align 4;\
- C_LABEL(name);\
- .type name,@function;
-
-#define LOC(name) . ## L ## name
-
-#define END(name) \
- .size name, . - name
-
-ENTRY(.umul)
- or %o0, %o1, %o4
- mov %o0, %y ! multiplier -> Y
- andncc %o4, 0xfff, %g0 ! test bits 12..31 of *both* args
- be LOC(mul_shortway) ! if zero, can do it the short way
- andcc %g0, %g0, %o4 ! zero the partial product; clear N & V
-
- /*
- * Long multiply. 32 steps, followed by a final shift step.
- */
- mulscc %o4, %o1, %o4 ! 1
- mulscc %o4, %o1, %o4 ! 2
- mulscc %o4, %o1, %o4 ! 3
- mulscc %o4, %o1, %o4 ! 4
- mulscc %o4, %o1, %o4 ! 5
- mulscc %o4, %o1, %o4 ! 6
- mulscc %o4, %o1, %o4 ! 7
- mulscc %o4, %o1, %o4 ! 8
- mulscc %o4, %o1, %o4 ! 9
- mulscc %o4, %o1, %o4 ! 10
- mulscc %o4, %o1, %o4 ! 11
- mulscc %o4, %o1, %o4 ! 12
- mulscc %o4, %o1, %o4 ! 13
- mulscc %o4, %o1, %o4 ! 14
- mulscc %o4, %o1, %o4 ! 15
- mulscc %o4, %o1, %o4 ! 16
- mulscc %o4, %o1, %o4 ! 17
- mulscc %o4, %o1, %o4 ! 18
- mulscc %o4, %o1, %o4 ! 19
- mulscc %o4, %o1, %o4 ! 20
- mulscc %o4, %o1, %o4 ! 21
- mulscc %o4, %o1, %o4 ! 22
- mulscc %o4, %o1, %o4 ! 23
- mulscc %o4, %o1, %o4 ! 24
- mulscc %o4, %o1, %o4 ! 25
- mulscc %o4, %o1, %o4 ! 26
- mulscc %o4, %o1, %o4 ! 27
- mulscc %o4, %o1, %o4 ! 28
- mulscc %o4, %o1, %o4 ! 29
- mulscc %o4, %o1, %o4 ! 30
- mulscc %o4, %o1, %o4 ! 31
- mulscc %o4, %o1, %o4 ! 32
- mulscc %o4, %g0, %o4 ! final shift
-
- /*
- * Normally, with the shift-and-add approach, if both numbers are
- * positive you get the correct result. With 32-bit two's-complement
- * numbers, -x is represented as
- *
- * x 32
- * ( 2 - ------ ) mod 2 * 2
- * 32
- * 2
- *
- * (the `mod 2' subtracts 1 from 1.bbbb). To avoid lots of 2^32s,
- * we can treat this as if the radix point were just to the left
- * of the sign bit (multiply by 2^32), and get
- *
- * -x = (2 - x) mod 2
- *
- * Then, ignoring the `mod 2's for convenience:
- *
- * x * y = xy
- * -x * y = 2y - xy
- * x * -y = 2x - xy
- * -x * -y = 4 - 2x - 2y + xy
- *
- * For signed multiplies, we subtract (x << 32) from the partial
- * product to fix this problem for negative multipliers (see mul.s).
- * Because of the way the shift into the partial product is calculated
- * (N xor V), this term is automatically removed for the multiplicand,
- * so we don't have to adjust.
- *
- * But for unsigned multiplies, the high order bit wasn't a sign bit,
- * and the correction is wrong. So for unsigned multiplies where the
- * high order bit is one, we end up with xy - (y << 32). To fix it
- * we add y << 32.
- */
-#if 0
- tst %o1
- bl,a 1f ! if %o1 < 0 (high order bit = 1),
- add %o4, %o0, %o4 ! %o4 += %o0 (add y to upper half)
-1: rd %y, %o0 ! get lower half of product
- retl
- addcc %o4, %g0, %o1 ! put upper half in place and set Z for %o1==0
-#else
- /* Faster code from tege@sics.se. */
- sra %o1, 31, %o2 ! make mask from sign bit
- and %o0, %o2, %o2 ! %o2 = 0 or %o0, depending on sign of %o1
- rd %y, %o0 ! get lower half of product
- retl
- addcc %o4, %o2, %o1 ! add compensation and put upper half in place
-#endif
-
-LOC(mul_shortway):
- /*
- * Short multiply. 12 steps, followed by a final shift step.
- * The resulting bits are off by 12 and (32-12) = 20 bit positions,
- * but there is no problem with %o0 being negative (unlike above),
- * and overflow is impossible (the answer is at most 24 bits long).
- */
- mulscc %o4, %o1, %o4 ! 1
- mulscc %o4, %o1, %o4 ! 2
- mulscc %o4, %o1, %o4 ! 3
- mulscc %o4, %o1, %o4 ! 4
- mulscc %o4, %o1, %o4 ! 5
- mulscc %o4, %o1, %o4 ! 6
- mulscc %o4, %o1, %o4 ! 7
- mulscc %o4, %o1, %o4 ! 8
- mulscc %o4, %o1, %o4 ! 9
- mulscc %o4, %o1, %o4 ! 10
- mulscc %o4, %o1, %o4 ! 11
- mulscc %o4, %o1, %o4 ! 12
- mulscc %o4, %g0, %o4 ! final shift
-
- /*
- * %o4 has 20 of the bits that should be in the result; %y has
- * the bottom 12 (as %y's top 12). That is:
- *
- * %o4 %y
- * +----------------+----------------+
- * | -12- | -20- | -12- | -20- |
- * +------(---------+------)---------+
- * -----result-----
- *
- * The 12 bits of %o4 left of the `result' area are all zero;
- * in fact, all top 20 bits of %o4 are zero.
- */
-
- rd %y, %o5
- sll %o4, 12, %o0 ! shift middle bits left 12
- srl %o5, 20, %o5 ! shift low bits right 20
- or %o5, %o0, %o0
- retl
- addcc %g0, %g0, %o1 ! %o1 = zero, and set Z
-
-END(.umul)
-#endif
diff --git a/mdk-stage1/dietlibc/sparc/unified.S b/mdk-stage1/dietlibc/sparc/unified.S
deleted file mode 100644
index 3cd609da5..000000000
--- a/mdk-stage1/dietlibc/sparc/unified.S
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <dietfeatures.h>
-
-.text
-.global __unified_syscall
-__unified_syscall:
- ta 0x10
-
- bcc 1f
- save %sp, -104, %sp
-
- neg %i0, %i0
-1:
- add %i0, 0xff, %l2
- cmp %l2, 0xfe
- bgu 2f
- neg %i0, %l3
-#ifdef WANT_THREAD_SAVE
- call __errno_location
- nop
-#else
- sethi %hi(errno), %o0
- or %o0, %lo(errno), %o0
-#endif
- st %l3, [ %o0 ]
- mov -1, %i0
-2:
- ret
- restore
diff --git a/mdk-stage1/dietlibc/sparc/urem.S b/mdk-stage1/dietlibc/sparc/urem.S
deleted file mode 100644
index 943cb7873..000000000
--- a/mdk-stage1/dietlibc/sparc/urem.S
+++ /dev/null
@@ -1,362 +0,0 @@
-#ifdef __sparc__
- /* This file is generated from divrem.m4; DO NOT EDIT! */
-/*
- * Division and remainder, from Appendix E of the Sparc Version 8
- * Architecture Manual, with fixes from Gordon Irlam.
- */
-
-/*
- * Input: dividend and divisor in %o0 and %o1 respectively.
- *
- * m4 parameters:
- * .urem name of function to generate
- * rem rem=div => %o0 / %o1; rem=rem => %o0 % %o1
- * false false=true => signed; false=false => unsigned
- *
- * Algorithm parameters:
- * N how many bits per iteration we try to get (4)
- * WORDSIZE total number of bits (32)
- *
- * Derived constants:
- * TOPBITS number of bits in the top decade of a number
- *
- * Important variables:
- * Q the partial quotient under development (initially 0)
- * R the remainder so far, initially the dividend
- * ITER number of main division loop iterations required;
- * equal to ceil(log2(quotient) / N). Note that this
- * is the log base (2^N) of the quotient.
- * V the current comparand, initially divisor*2^(ITER*N-1)
- *
- * Cost:
- * Current estimate for non-large dividend is
- * ceil(log2(quotient) / N) * (10 + 7N/2) + C
- * A large dividend is one greater than 2^(31-TOPBITS) and takes a
- * different path, as the upper bits of the quotient must be developed
- * one bit at a time.
- */
-
-
-
-#define C_LABEL(name) name:
-
-#define C_SYMBOL_NAME(name) name
-
-#define ENTRY(name) \
- .global C_SYMBOL_NAME(name); \
- .align 4;\
- C_LABEL(name);\
- .type name,@function;
-
-#define LOC(name) . ## L ## name
-
-#define END(name) \
- .size name, . - name
-
-#define ST_DIV0 0x02
-
-ENTRY(.urem)
-
- ! Ready to divide. Compute size of quotient; scale comparand.
- orcc %o1, %g0, %o5
- bne 1f
- mov %o0, %o3
-
- ! Divide by zero trap. If it returns, return 0 (about as
- ! wrong as possible, but that is what SunOS does...).
- ta ST_DIV0
- retl
- clr %o0
-
-1:
- cmp %o3, %o5 ! if %o1 exceeds %o0, done
- blu LOC(got_result) ! (and algorithm fails otherwise)
- clr %o2
- sethi %hi(1 << (32 - 4 - 1)), %g1
- cmp %o3, %g1
- blu LOC(not_really_big)
- clr %o4
-
- ! Here the dividend is >= 2**(31-N) or so. We must be careful here,
- ! as our usual N-at-a-shot divide step will cause overflow and havoc.
- ! The number of bits in the result here is N*ITER+SC, where SC <= N.
- ! Compute ITER in an unorthodox manner: know we need to shift V into
- ! the top decade: so do not even bother to compare to R.
- 1:
- cmp %o5, %g1
- bgeu 3f
- mov 1, %g2
- sll %o5, 4, %o5
- b 1b
- add %o4, 1, %o4
-
- ! Now compute %g2.
- 2: addcc %o5, %o5, %o5
- bcc LOC(not_too_big)
- add %g2, 1, %g2
-
- ! We get here if the %o1 overflowed while shifting.
- ! This means that %o3 has the high-order bit set.
- ! Restore %o5 and subtract from %o3.
- sll %g1, 4, %g1 ! high order bit
- srl %o5, 1, %o5 ! rest of %o5
- add %o5, %g1, %o5
- b LOC(do_single_div)
- sub %g2, 1, %g2
-
- LOC(not_too_big):
- 3: cmp %o5, %o3
- blu 2b
- nop
- be LOC(do_single_div)
- nop
- /* NB: these are commented out in the V8-Sparc manual as well */
- /* (I do not understand this) */
- ! %o5 > %o3: went too far: back up 1 step
- ! srl %o5, 1, %o5
- ! dec %g2
- ! do single-bit divide steps
- !
- ! We have to be careful here. We know that %o3 >= %o5, so we can do the
- ! first divide step without thinking. BUT, the others are conditional,
- ! and are only done if %o3 >= 0. Because both %o3 and %o5 may have the high-
- ! order bit set in the first step, just falling into the regular
- ! division loop will mess up the first time around.
- ! So we unroll slightly...
- LOC(do_single_div):
- subcc %g2, 1, %g2
- bl LOC(end_regular_divide)
- nop
- sub %o3, %o5, %o3
- mov 1, %o2
- b LOC(end_single_divloop)
- nop
- LOC(single_divloop):
- sll %o2, 1, %o2
- bl 1f
- srl %o5, 1, %o5
- ! %o3 >= 0
- sub %o3, %o5, %o3
- b 2f
- add %o2, 1, %o2
- 1: ! %o3 < 0
- add %o3, %o5, %o3
- sub %o2, 1, %o2
- 2:
- LOC(end_single_divloop):
- subcc %g2, 1, %g2
- bge LOC(single_divloop)
- tst %o3
- b,a LOC(end_regular_divide)
-
-LOC(not_really_big):
-1:
- sll %o5, 4, %o5
- cmp %o5, %o3
- bleu 1b
- addcc %o4, 1, %o4
- be LOC(got_result)
- sub %o4, 1, %o4
-
- tst %o3 ! set up for initial iteration
-LOC(divloop):
- sll %o2, 4, %o2
- ! depth 1, accumulated bits 0
- bl LOC(1.16)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 2, accumulated bits 1
- bl LOC(2.17)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 3, accumulated bits 3
- bl LOC(3.19)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits 7
- bl LOC(4.23)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (7*2+1), %o2
-
-LOC(4.23):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (7*2-1), %o2
-
-
-LOC(3.19):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits 5
- bl LOC(4.21)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (5*2+1), %o2
-
-LOC(4.21):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (5*2-1), %o2
-
-
-
-LOC(2.17):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 3, accumulated bits 1
- bl LOC(3.17)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits 3
- bl LOC(4.19)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (3*2+1), %o2
-
-LOC(4.19):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (3*2-1), %o2
-
-
-LOC(3.17):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits 1
- bl LOC(4.17)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (1*2+1), %o2
-
-LOC(4.17):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (1*2-1), %o2
-
-
-
-
-LOC(1.16):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 2, accumulated bits -1
- bl LOC(2.15)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 3, accumulated bits -1
- bl LOC(3.15)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits -1
- bl LOC(4.15)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-1*2+1), %o2
-
-LOC(4.15):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-1*2-1), %o2
-
-
-LOC(3.15):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits -3
- bl LOC(4.13)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-3*2+1), %o2
-
-LOC(4.13):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-3*2-1), %o2
-
-
-
-LOC(2.15):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 3, accumulated bits -3
- bl LOC(3.13)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- ! depth 4, accumulated bits -5
- bl LOC(4.11)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-5*2+1), %o2
-
-LOC(4.11):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-5*2-1), %o2
-
-
-LOC(3.13):
- ! remainder is negative
- addcc %o3,%o5,%o3
- ! depth 4, accumulated bits -7
- bl LOC(4.9)
- srl %o5,1,%o5
- ! remainder is positive
- subcc %o3,%o5,%o3
- b 9f
- add %o2, (-7*2+1), %o2
-
-LOC(4.9):
- ! remainder is negative
- addcc %o3,%o5,%o3
- b 9f
- add %o2, (-7*2-1), %o2
-
-
-
-
- 9:
-LOC(end_regular_divide):
- subcc %o4, 1, %o4
- bge LOC(divloop)
- tst %o3
- bl,a LOC(got_result)
- ! non-restoring fixup here (one instruction only!)
- add %o3, %o1, %o3
-
-
-LOC(got_result):
-
- retl
- mov %o3, %o0
-
-END(.urem)
-#endif