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63 lines
1.9 KiB
ArmAsm
63 lines
1.9 KiB
ArmAsm
/* setjmp for i386.
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Copyright (C) 1995-2012 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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<http://www.gnu.org/licenses/>. */
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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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#include "bp-sym.h"
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#include "bp-asm.h"
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#include <stap-probe.h>
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#define PARMS LINKAGE /* no space for saved regs */
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#define JMPBUF PARMS
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#define SIGMSK JMPBUF+PTR_SIZE
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ENTRY (BP_SYM (__sigsetjmp))
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ENTER
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movl JMPBUF(%esp), %eax
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CHECK_BOUNDS_BOTH_WIDE (%eax, JMPBUF(%esp), $JB_SIZE)
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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 PCOFF(%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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LEAVE /* pop frame pointer to prepare for tail-call. */
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movl %ebp, (JB_BP*4)(%eax) /* Save caller's frame pointer. */
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#if defined NOT_IN_libc && defined 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 (BP_SYM (__sigsetjmp))
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