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/*--------------------------------------------------------------------*/
/*--- Machine-related stuff. pub_tool_machine.h ---*/
/*--------------------------------------------------------------------*/
/*
This file is part of Valgrind, a dynamic binary instrumentation
framework.
Copyright (C) 2000-2010 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_TOOL_MACHINE_H
#define __PUB_TOOL_MACHINE_H
#if defined(VGP_x86_linux)
# define VG_MIN_INSTR_SZB 1 // min length of native instruction
# define VG_MAX_INSTR_SZB 16 // max length of native instruction
# define VG_CLREQ_SZB 14 // length of a client request, may
// be larger than VG_MAX_INSTR_SZB
# define VG_STACK_REDZONE_SZB 0 // number of addressable bytes below %RSP
#elif defined(VGP_amd64_linux)
# define VG_MIN_INSTR_SZB 1
# define VG_MAX_INSTR_SZB 16
# define VG_CLREQ_SZB 19
# define VG_STACK_REDZONE_SZB 128
#elif defined(VGP_ppc32_linux)
# define VG_MIN_INSTR_SZB 4
# define VG_MAX_INSTR_SZB 4
# define VG_CLREQ_SZB 20
# define VG_STACK_REDZONE_SZB 0
#elif defined(VGP_ppc64_linux)
# define VG_MIN_INSTR_SZB 4
# define VG_MAX_INSTR_SZB 4
# define VG_CLREQ_SZB 20
# define VG_STACK_REDZONE_SZB 288 // number of addressable bytes below R1
// from 64-bit PowerPC ELF ABI
// Supplement 1.7
#elif defined(VGP_arm_linux)
# define VG_MIN_INSTR_SZB 2
# define VG_MAX_INSTR_SZB 4
# define VG_CLREQ_SZB 20
# define VG_STACK_REDZONE_SZB 0
#elif defined(VGP_s390x_linux)
# define VG_MIN_INSTR_SZB 2
# define VG_MAX_INSTR_SZB 6
# define VG_CLREQ_SZB 10
# define VG_STACK_REDZONE_SZB 0 // s390 has no redzone
#elif defined(VGP_x86_darwin)
# define VG_MIN_INSTR_SZB 1 // min length of native instruction
# define VG_MAX_INSTR_SZB 16 // max length of native instruction
# define VG_CLREQ_SZB 14 // length of a client request, may
// be larger than VG_MAX_INSTR_SZB
# define VG_STACK_REDZONE_SZB 0 // number of addressable bytes below %RSP
#elif defined(VGP_amd64_darwin)
# define VG_MIN_INSTR_SZB 1
# define VG_MAX_INSTR_SZB 16
# define VG_CLREQ_SZB 19
# define VG_STACK_REDZONE_SZB 128
#else
# error Unknown platform
#endif
// Guest state accessors
// Are mostly in the core_ header.
// Only these two are available to tools.
Addr VG_(get_IP) ( ThreadId tid );
Addr VG_(get_SP) ( ThreadId tid );
// For get/set, 'area' is where the asked-for guest state will be copied
// into/from. If shadowNo == 0, the real (non-shadow) guest state is
// accessed. If shadowNo == 1, the first shadow area is accessed, and
// if shadowNo == 2, the second shadow area is accessed. This gives a
// completely general way to read/modify a thread's guest register state
// providing you know the offsets you need.
void
VG_(get_shadow_regs_area) ( ThreadId tid,
/*DST*/UChar* dst,
/*SRC*/Int shadowNo, PtrdiffT offset, SizeT size );
void
VG_(set_shadow_regs_area) ( ThreadId tid,
/*DST*/Int shadowNo, PtrdiffT offset, SizeT size,
/*SRC*/const UChar* src );
// Sets the shadow values for the syscall return value register(s).
// This is platform specific.
void VG_(set_syscall_return_shadows) ( ThreadId tid,
/* shadow vals for the result */
UWord s1res, UWord s2res,
/* shadow vals for the error val */
UWord s1err, UWord s2err );
// Apply a function 'f' to all the general purpose registers in all the
// current threads.
// This is very Memcheck-specific -- it's used to find the roots when
// doing leak checking.
extern void VG_(apply_to_GP_regs)(void (*f)(UWord val));
// This iterator lets you inspect each live thread's stack bounds.
// Returns False at the end. 'tid' is the iterator and you can only
// safely change it by making calls to these functions.
extern void VG_(thread_stack_reset_iter) ( /*OUT*/ThreadId* tid );
extern Bool VG_(thread_stack_next) ( /*MOD*/ThreadId* tid,
/*OUT*/Addr* stack_min,
/*OUT*/Addr* stack_max );
// Returns .client_stack_highest_word for the given thread
extern Addr VG_(thread_get_stack_max) ( ThreadId tid );
// Returns how many bytes have been allocated for the stack of the given thread
extern SizeT VG_(thread_get_stack_size) ( ThreadId tid );
// Returns the bottommost address of the alternate signal stack.
// See also the man page of sigaltstack().
extern Addr VG_(thread_get_altstack_min) ( ThreadId tid );
// Returns how many bytes have been allocated for the alternate signal stack.
// See also the man page of sigaltstack().
extern SizeT VG_(thread_get_altstack_size) ( ThreadId tid );
// Given a pointer to a function as obtained by "& functionname" in C,
// produce a pointer to the actual entry point for the function. For
// most platforms it's the identity function. Unfortunately, on
// ppc64-linux it isn't (sigh).
extern void* VG_(fnptr_to_fnentry)( void* );
#endif // __PUB_TOOL_MACHINE_H
/*--------------------------------------------------------------------*/
/*--- end ---*/
/*--------------------------------------------------------------------*/
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