mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-21 01:12:26 +08:00
272b289859
pointer. Add CFI. * sysdeps/i386/bsd-_setjmp.S [PTR_MANGLE]: Also mangle stack pointer. * sysdeps/i386/bsd-setjmp.S: Likewise. * sysdeps/i386/setjmp.S: Likewise.
81 lines
2.4 KiB
ArmAsm
81 lines
2.4 KiB
ArmAsm
/* longjmp for i386.
|
|
Copyright (C) 1995-1998,2000,2002,2005 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <sysdep.h>
|
|
#define _ASM
|
|
#define _SETJMP_H
|
|
#include <bits/setjmp.h>
|
|
#include <asm-syntax.h>
|
|
#include <bp-sym.h>
|
|
#include <bp-asm.h>
|
|
|
|
#define PARMS LINKAGE /* no space for saved regs */
|
|
#define JBUF PARMS
|
|
#define VAL JBUF+PTR_SIZE
|
|
|
|
ENTRY (BP_SYM (__longjmp))
|
|
ENTER
|
|
|
|
#ifdef PTR_DEMANGLE
|
|
movl JBUF(%esp), %eax /* User's jmp_buf in %eax. */
|
|
CHECK_BOUNDS_BOTH_WIDE (%eax, JBUF(%esp), $JB_SIZE)
|
|
|
|
/* Save the return address now. */
|
|
movl (JB_PC*4)(%eax), %edx
|
|
/* Get the stack pointer. */
|
|
movl (JB_SP*4)(%eax), %ecx
|
|
PTR_DEMANGLE (%edx)
|
|
PTR_DEMANGLE (%ecx)
|
|
cfi_def_cfa(%eax, 0)
|
|
cfi_register(%eip, %edx)
|
|
cfi_register(%esp, %ecx)
|
|
cfi_offset(%ebx, JB_BX*4)
|
|
cfi_offset(%esi, JB_SI*4)
|
|
cfi_offset(%edi, JB_DI*4)
|
|
cfi_offset(%ebp, JB_BP*4)
|
|
/* Restore registers. */
|
|
movl (JB_BX*4)(%eax), %ebx
|
|
movl (JB_SI*4)(%eax), %esi
|
|
movl (JB_DI*4)(%eax), %edi
|
|
movl (JB_BP*4)(%eax), %ebp
|
|
cfi_restore(%ebx)
|
|
cfi_restore(%esi)
|
|
cfi_restore(%edi)
|
|
cfi_restore(%ebp)
|
|
|
|
movl VAL(%esp), %eax /* Second argument is return value. */
|
|
movl %ecx, %esp
|
|
#else
|
|
movl JBUF(%esp), %ecx /* User's jmp_buf in %ecx. */
|
|
CHECK_BOUNDS_BOTH_WIDE (%ecx, JBUF(%esp), $JB_SIZE)
|
|
|
|
movl VAL(%esp), %eax /* Second argument is return value. */
|
|
/* Save the return address now. */
|
|
movl (JB_PC*4)(%ecx), %edx
|
|
/* Restore registers. */
|
|
movl (JB_BX*4)(%ecx), %ebx
|
|
movl (JB_SI*4)(%ecx), %esi
|
|
movl (JB_DI*4)(%ecx), %edi
|
|
movl (JB_BP*4)(%ecx), %ebp
|
|
movl (JB_SP*4)(%ecx), %esp
|
|
#endif
|
|
/* Jump to saved PC. */
|
|
jmp *%edx
|
|
END (BP_SYM (__longjmp))
|