| |
| /*--------------------------------------------------------------------*/ |
| /*--- The trampoline code page. pub_core_trampoline.h ---*/ |
| /*--------------------------------------------------------------------*/ |
| |
| /* |
| This file is part of Valgrind, a dynamic binary instrumentation |
| framework. |
| |
| Copyright (C) 2000-2012 Julian Seward |
| jseward@acm.org |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License as |
| published by the Free Software Foundation; either version 2 of the |
| License, or (at your option) any later version. |
| |
| This program 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 |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307, USA. |
| |
| The GNU General Public License is contained in the file COPYING. |
| */ |
| |
| #ifndef __PUB_CORE_TRAMPOLINE_H |
| #define __PUB_CORE_TRAMPOLINE_H |
| |
| #include "pub_core_basics.h" // VG_ macro |
| |
| //-------------------------------------------------------------------- |
| // PURPOSE: This module defines a few replacement functions for Linux |
| // vsyscalls, which we can't implement directly. It also contains |
| // stubs for signal returns. Note, all the code within runs on the |
| // simulated CPU. The vsyscall stubs are gotten to by use of the |
| // redirect mechanism. |
| // |
| // Note: generally, putting replacement functions in here is a bad |
| // idea, since any Dwarf frame-unwind info attached to them will not |
| // be seen by the unwinder in gcc's runtime support. This means |
| // unwinding during exception handling by gcc tends to fail if it |
| // encounters one of these replacement functions. A better place to |
| // put them is in one of the .so's preloaded into the client, since |
| // the client's ld.so will know about it and so gcc's unwinder |
| // (somehow) is able to get hold of it. |
| //-------------------------------------------------------------------- |
| |
| /* These two delimit our handwritten assembly code, so we can tell |
| tools which track memory that this area should be regarded as |
| readable, at least. Otherwise Memcheck complains we're jumping to |
| invalid addresses. */ |
| |
| extern Addr VG_(trampoline_stuff_start); |
| extern Addr VG_(trampoline_stuff_end); |
| |
| #if defined(VGP_x86_linux) |
| extern Addr VG_(x86_linux_SUBST_FOR_sigreturn); |
| extern Addr VG_(x86_linux_SUBST_FOR_rt_sigreturn); |
| extern Char* VG_(x86_linux_REDIR_FOR_index) ( const Char*, Int ); |
| extern UInt VG_(x86_linux_REDIR_FOR_strlen)( void* ); |
| #endif |
| |
| #if defined(VGP_amd64_linux) |
| extern Addr VG_(amd64_linux_SUBST_FOR_rt_sigreturn); |
| extern Addr VG_(amd64_linux_REDIR_FOR_vgettimeofday); |
| extern Addr VG_(amd64_linux_REDIR_FOR_vtime); |
| extern Addr VG_(amd64_linux_REDIR_FOR_vgetcpu); |
| extern UInt VG_(amd64_linux_REDIR_FOR_strlen)( void* ); |
| #endif |
| |
| #if defined(VGP_ppc32_linux) |
| extern Addr VG_(ppc32_linux_SUBST_FOR_sigreturn); |
| extern Addr VG_(ppc32_linux_SUBST_FOR_rt_sigreturn); |
| extern UInt VG_(ppc32_linux_REDIR_FOR_strlen)( void* ); |
| extern UInt VG_(ppc32_linux_REDIR_FOR_strcmp)( void*, void* ); |
| extern void* VG_(ppc32_linux_REDIR_FOR_strchr)( void*, Int ); |
| #endif |
| |
| #if defined(VGP_ppc64_linux) |
| extern Addr VG_(ppc64_linux_SUBST_FOR_rt_sigreturn); |
| extern UInt VG_(ppc64_linux_REDIR_FOR_strlen)( void* ); |
| extern void* VG_(ppc64_linux_REDIR_FOR_strchr)( void*, Int ); |
| /* A label (sans dot) marking the ultra-magical return stub via which |
| all redirected and wrapped functions are made to "return" on |
| ppc64-linux. The one insn at this label is never really |
| translated. Instead, m_translate generates IR to restore the |
| thread's LR and R2 registers from a small stack in the ppc64 guest |
| state structure, and then branch to LR. Convoluted? Confusing? |
| You betcha. Could I think of anything simpler? No. */ |
| extern Addr VG_(ppctoc_magic_redirect_return_stub); |
| #endif |
| |
| #if defined(VGP_arm_linux) |
| extern Addr VG_(arm_linux_SUBST_FOR_sigreturn); |
| extern Addr VG_(arm_linux_SUBST_FOR_rt_sigreturn); |
| extern UInt VG_(arm_linux_REDIR_FOR_strlen)( void* ); |
| //extern void* VG_(arm_linux_REDIR_FOR_index) ( void*, Int ); |
| extern void* VG_(arm_linux_REDIR_FOR_memcpy)( void*, void*, Int ); |
| #endif |
| |
| #if defined(VGP_x86_darwin) |
| extern Addr VG_(x86_darwin_SUBST_FOR_sigreturn); |
| extern SizeT VG_(x86_darwin_REDIR_FOR_strlen)( void* ); |
| extern SizeT VG_(x86_darwin_REDIR_FOR_strcmp)( void*, void* ); |
| extern void* VG_(x86_darwin_REDIR_FOR_strcat)( void*, void * ); |
| extern char* VG_(x86_darwin_REDIR_FOR_strcpy)( char *s1, char *s2 ); |
| extern SizeT VG_(x86_darwin_REDIR_FOR_strlcat)( char *s1, const char *s2, |
| SizeT size ); |
| #endif |
| |
| #if defined(VGP_amd64_darwin) |
| extern Addr VG_(amd64_darwin_SUBST_FOR_sigreturn); |
| extern SizeT VG_(amd64_darwin_REDIR_FOR_strlen)( void* ); |
| extern SizeT VG_(amd64_darwin_REDIR_FOR_strcmp)( void*, void* ); |
| extern void* VG_(amd64_darwin_REDIR_FOR_strcat)( void*, void * ); |
| extern char* VG_(amd64_darwin_REDIR_FOR_strcpy)( char *s1, char *s2 ); |
| extern SizeT VG_(amd64_darwin_REDIR_FOR_strlcat)( char *s1, const char *s2, |
| SizeT size ); |
| extern UInt VG_(amd64_darwin_REDIR_FOR_arc4random)( void ); |
| #endif |
| |
| #if defined(VGP_s390x_linux) |
| extern Addr VG_(s390x_linux_SUBST_FOR_sigreturn); |
| extern Addr VG_(s390x_linux_SUBST_FOR_rt_sigreturn); |
| #endif |
| |
| #if defined(VGP_mips32_linux) |
| extern Addr VG_(mips32_linux_SUBST_FOR_sigreturn); |
| extern Addr VG_(mips32_linux_SUBST_FOR_rt_sigreturn); |
| extern UInt VG_(mips32_linux_REDIR_FOR_strlen)( void* ); |
| #endif |
| |
| #if defined(VGP_mips64_linux) |
| extern Addr VG_(mips64_linux_SUBST_FOR_rt_sigreturn); |
| extern UInt VG_(mips64_linux_REDIR_FOR_strlen)( void* ); |
| #endif |
| |
| #endif // __PUB_CORE_TRAMPOLINE_H |
| |
| /*--------------------------------------------------------------------*/ |
| /*--- end ---*/ |
| /*--------------------------------------------------------------------*/ |