mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
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d6a91b8ec3
so that it is copied into the client space. This avoid warnings from memcheck because it doesn't think that code inside valgrind is valid. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@3591
97 lines
3.1 KiB
ArmAsm
97 lines
3.1 KiB
ArmAsm
##--------------------------------------------------------------------##
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##--- Support routines for the JITter output. amd64/helpers.S ---##
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##--------------------------------------------------------------------##
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/*
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This file is part of Valgrind, a dynamic binary instrumentation
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framework.
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Copyright (C) 2000-2005 Julian Seward
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jseward@acm.org
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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The GNU General Public License is contained in the file COPYING.
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*/
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#include "core_asm.h"
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#include "vki_unistd.h"
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/* ------------------ SIMULATED CPU HELPERS ------------------ */
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/* A stubs for a return which we want to catch: a signal return.
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returns and pthread returns. In the latter case, the thread's
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return value is in %EAX, so we pass this as the first argument
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to the request. In both cases we use the user request mechanism.
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You need to to read the definition of VALGRIND_MAGIC_SEQUENCE
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in valgrind.h to make sense of this.
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This isn't used in-place. It is copied into the client address space
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at an arbitary address. Therefore, this code must be completely
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position-independent.
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*/
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.global VG_(trampoline_code_start)
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.global VG_(trampoline_code_length)
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.global VG_(tramp_rt_sigreturn_offset)
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.global VG_(tramp_syscall_offset)
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.global VG_(tramp_gettimeofday_offset)
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.global VG_(tramp_time_offset)
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VG_(trampoline_code_start):
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rt_sigreturn_start:
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/* Likewise for rt signal frames */
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movq $__NR_rt_sigreturn, %rax
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syscall
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ud2
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# We can point our sysinfo stuff here
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.align 16
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syscall_start:
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/* unused on amd64 */
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.align 16
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gettimeofday_start:
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movq $__NR_gettimeofday, %rax
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syscall
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ret
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.align 16
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time_start:
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movq $__NR_time, %rax
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syscall
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ret
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tramp_code_end:
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.data
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VG_(trampoline_code_length):
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.long tramp_code_end - VG_(trampoline_code_start)
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VG_(tramp_rt_sigreturn_offset):
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.long rt_sigreturn_start - VG_(trampoline_code_start)
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VG_(tramp_syscall_offset):
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.long syscall_start - VG_(trampoline_code_start)
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VG_(tramp_gettimeofday_offset):
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.long gettimeofday_start - VG_(trampoline_code_start)
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VG_(tramp_time_offset):
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.long time_start - VG_(trampoline_code_start)
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.text
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/* Let the linker know we don't need an executable stack */
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.section .note.GNU-stack,"",@progbits
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##--------------------------------------------------------------------##
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##--- end ---##
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##--------------------------------------------------------------------##
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