5ead9ce5c7
The simple test previously used might trigger if the longjmp jumps from the signal stack to the normal stack. We now explicitly test for this case.
58 lines
1.8 KiB
ArmAsm
58 lines
1.8 KiB
ArmAsm
/* Copyright (C) 2001,2004,2005,2006,2009 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <sysdep.h>
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#include <jmpbuf-offsets.h>
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#include <asm-syntax.h>
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/* Jump to the position specified by ENV, causing the
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setjmp call there to return VAL, or 1 if VAL is 0.
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void __longjmp (__jmp_buf env, int val). */
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.text
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ENTRY(__longjmp)
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/* Restore registers. */
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movq (JB_RSP*8)(%rdi),%r8
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movq (JB_RBP*8)(%rdi),%r9
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movq (JB_PC*8)(%rdi),%rdx
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#ifdef PTR_DEMANGLE
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PTR_DEMANGLE (%r8)
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PTR_DEMANGLE (%r9)
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PTR_DEMANGLE (%rdx)
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#endif
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/* We add unwind information for the target here. */
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cfi_def_cfa(%rdi, 0)
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cfi_register(%rsp,%r8)
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cfi_register(%rbp,%r9)
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cfi_register(%rip,%rdx)
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cfi_offset(%rbx,JB_RBX*8)
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cfi_offset(%r12,JB_R12*8)
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cfi_offset(%r13,JB_R13*8)
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cfi_offset(%r14,JB_R14*8)
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cfi_offset(%r15,JB_R15*8)
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movq (JB_RBX*8)(%rdi),%rbx
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movq (JB_R12*8)(%rdi),%r12
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movq (JB_R13*8)(%rdi),%r13
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movq (JB_R14*8)(%rdi),%r14
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movq (JB_R15*8)(%rdi),%r15
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/* Set return value for setjmp. */
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mov %esi, %eax
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movq %r8,%rsp
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movq %r9,%rbp
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jmpq *%rdx
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END (__longjmp)
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