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25f1e16ef0
CET is only support for x86_64, this patch reverts:
- faaee1f07ed x86: Support shadow stack pointer in setjmp/longjmp.
- be9ccd27c09 i386: Add _CET_ENDBR to indirect jump targets in
add_n.S/sub_n.S
- c02695d7764 x86/CET: Update vfork to prevent child return
- 5d844e1b725 i386: Enable CET support in ucontext functions
- 124bcde683 x86: Add _CET_ENDBR to functions in crti.S
- 562837c002 x86: Add _CET_ENDBR to functions in dl-tlsdesc.S
- f753fa7dea x86: Support IBT and SHSTK in Intel CET [BZ #21598]
- 825b58f3fb i386-mcount.S: Add _CET_ENDBR to _mcount and __fentry__
- 7e119cd582 i386: Use _CET_NOTRACK in i686/memcmp.S
- 177824e232 i386: Use _CET_NOTRACK in memcmp-sse4.S
- 0a899af097 i386: Use _CET_NOTRACK in memcpy-ssse3-rep.S
- 7fb613361c i386: Use _CET_NOTRACK in memcpy-ssse3.S
- 77a8ae0948 i386: Use _CET_NOTRACK in memset-sse2-rep.S
- 00e7b76a8f i386: Use _CET_NOTRACK in memset-sse2.S
- 90d15dc577 i386: Use _CET_NOTRACK in strcat-sse2.S
- f1574581c7 i386: Use _CET_NOTRACK in strcpy-sse2.S
- 4031d7484a i386/sub_n.S: Add a missing _CET_ENDBR to indirect jump
- target
-
Checked on i686-linux-gnu.
60 lines
1.8 KiB
ArmAsm
60 lines
1.8 KiB
ArmAsm
/* setjmp for i386.
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Copyright (C) 1995-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sysdep.h>
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#include <pointer_guard.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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#include <stap-probe.h>
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#define PARMS 4 /* no space for saved regs */
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#define JMPBUF PARMS
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#define SIGMSK JMPBUF+4
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ENTRY (__sigsetjmp)
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movl JMPBUF(%esp), %eax
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/* Save registers. */
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movl %ebx, (JB_BX*4)(%eax)
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movl %esi, (JB_SI*4)(%eax)
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movl %edi, (JB_DI*4)(%eax)
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leal JMPBUF(%esp), %ecx /* Save SP as it will be after we return. */
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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movl %ecx, (JB_SP*4)(%eax)
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movl 0(%esp), %ecx /* Save PC we are returning to now. */
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LIBC_PROBE (setjmp, 3, 4@%eax, -4@SIGMSK(%esp), 4@%ecx)
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#ifdef PTR_MANGLE
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PTR_MANGLE (%ecx)
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#endif
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movl %ecx, (JB_PC*4)(%eax)
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movl %ebp, (JB_BP*4)(%eax) /* Save caller's frame pointer. */
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#if IS_IN (rtld)
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/* In ld.so we never save the signal mask. */
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xorl %eax, %eax
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ret
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#else
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/* Make a tail call to __sigjmp_save; it takes the same args. */
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jmp __sigjmp_save
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#endif
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END (__sigsetjmp)
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hidden_def (__sigsetjmp)
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