diff options
Diffstat (limited to 'mdk-stage1/dietlibc/i386/setjmp.S')
| -rw-r--r-- | mdk-stage1/dietlibc/i386/setjmp.S | 55 |
1 files changed, 17 insertions, 38 deletions
diff --git a/mdk-stage1/dietlibc/i386/setjmp.S b/mdk-stage1/dietlibc/i386/setjmp.S index 9bfecf565..09b266c61 100644 --- a/mdk-stage1/dietlibc/i386/setjmp.S +++ b/mdk-stage1/dietlibc/i386/setjmp.S @@ -1,61 +1,40 @@ #include <setjmp.h> -/* setjmp for i386. - Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - The GNU C Library is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. - - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ - -.section .rodata .text .weak setjmp +.type setjmp,@function setjmp: .globl __setjmp +.type __setjmp,@function __setjmp: - popl %eax /* Pop return address. */ - popl %ecx /* Pop jmp_buf. */ - pushl $0 /* Push zero argument. */ - pushl %ecx /* Push jmp_buf. */ - pushl %eax /* Push back return address. */ + popl %eax + popl %ecx + pushl $0 + pushl %ecx + pushl %eax .globl __sigsetjmp +.type __sigsetjmp,@function __sigsetjmp: - movl 4(%esp), %eax /* User's jmp_buf in %eax. */ + movl 4(%esp), %eax + /* Save registers. */ movl %ebx, (JB_BX*4)(%eax) movl %esi, (JB_SI*4)(%eax) movl %edi, (JB_DI*4)(%eax) movl %ebp, (JB_BP*4)(%eax) - leal 4(%esp), %ecx /* Save SP as it will be after we return. */ - movl %ecx, (JB_SP*4)(%eax) + leal 4(%esp), %edx /* Save SP as it will be after we return. */ movl 0(%esp), %ecx /* Save PC we are returning to now. */ + movl %edx, (JB_SP*4)(%eax) movl %ecx, (JB_PC*4)(%eax) /* Make a tail call to __sigjmp_save; it takes the same args. */ #ifdef PIC - /* We cannot use the PLT, because it requires that %ebx be set, but - we can't save and restore our caller's value. Instead, we do an - indirect jump through the GOT, using for the temporary register - %ecx, which is call-clobbered. */ - call L(here) -L(here): - popl %ecx - addl $_GLOBAL_OFFSET_TABLE_+[.-L(here)], %ecx - movl C_SYMBOL_NAME(__sigjmp_save@GOT)(%ecx), %ecx - jmp *%ecx + call 1f + addl $_GLOBAL_OFFSET_TABLE_, %ecx + jmp *__sigjmp_save@GOT(%ecx) +1: movl (%esp), %ecx + ret #else jmp __sigjmp_save #endif |