mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
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918c3a7b7e
Valgrind's dependency on the dynamic linker for getting started, and instead takes things into its own hands. This checkin doesn't add much in the way of new functionality, but it is the basis for all future work on Valgrind. It allows us much more flexibility in implementation, and well as increasing the reliability of Valgrind by protecting it more from its clients. This patch requires some changes to tools to update them to the changes in the tool API, but they are straightforward. See the posting "Heads up: Full Virtualization" on valgrind-developers for a more complete description of this change and its effects on you. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@2118
124 lines
4.3 KiB
C
124 lines
4.3 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- A header file containing constants (for assembly code). ---*/
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/*--- vg_constants.h ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Valgrind, an extensible x86 protected-mode
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emulator for monitoring program execution on x86-Unixes.
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Copyright (C) 2000-2003 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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#ifndef __VG_CONSTANTS_H
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#define __VG_CONSTANTS_H
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#include "vg_constants_skin.h"
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/* This file is included in all Valgrind source files, including
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assembly ones. */
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/* Magic values that %ebp might be set to when returning to the
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dispatcher. The only other legitimate value is to point to the
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start of VG_(baseBlock). These also are return values from
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VG_(run_innerloop) to the scheduler.
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EBP means %ebp can legitimately have this value when a basic block
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returns to the dispatch loop. TRC means that this value is a valid
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thread return code, which the dispatch loop may return to the
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scheduler. */
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#define VG_TRC_EBP_JMP_SYSCALL 19 /* EBP and TRC */
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#define VG_TRC_EBP_JMP_CLIENTREQ 23 /* EBP and TRC */
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#define VG_TRC_INNER_FASTMISS 31 /* TRC only; means fast-cache miss. */
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#define VG_TRC_INNER_COUNTERZERO 29 /* TRC only; means bb ctr == 0 */
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#define VG_TRC_UNRESUMABLE_SIGNAL 37 /* TRC only; got sigsegv/sigbus */
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/* size of call instruction put into generated code at jump sites */
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#define VG_PATCHME_CALLSZ 5
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/* size of jmp instruction which overwrites the call */
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#define VG_PATCHME_JMPSZ 5
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/* maximum number of normal jumps which can appear in a basic block */
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#define VG_MAX_JUMPS 2
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/* Offset of code in a TCEntry */
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#define VG_CODE_OFFSET (8 + VG_MAX_JUMPS * 2)
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/* Client address space segment limit descriptor entry */
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#define VG_POINTERCHECK_SEGIDX 1
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/* Debugging hack for assembly code ... sigh. */
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#if 0
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#define OYNK(nnn) pushal; pushl $nnn; call VG_(oynk) ; addl $4,%esp; popal
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#else
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#define OYNK(nnn)
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#endif
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#if 0
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#define OYNNK(nnn) pushal; pushl $nnn; call VG_(oynk) ; addl $4,%esp; popal
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#else
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#define OYNNK(nnn)
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#endif
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/* Constants for the fast translation lookup cache. */
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#define VG_TT_FAST_BITS 15
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#define VG_TT_FAST_SIZE (1 << VG_TT_FAST_BITS)
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#define VG_TT_FAST_MASK ((VG_TT_FAST_SIZE) - 1)
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/* Constants for the fast original-code-write check cache. */
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/* Assembly code stubs make this request */
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#define VG_USERREQ__SIGNAL_RETURNS 0x4001
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/* Various environment variables we pay attention to */
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/* The directory we look for all our auxillary files in */
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#define VALGRINDLIB "VALGRINDLIB"
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/* Additional command-line arguments; they are overridden by actual
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command-line option. Each argument is separated by spaces. There
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is no quoting mechanism.
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*/
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#define VALGRINDOPTS "VALGRIND_OPTS"
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/* If this variable is present in the environment, then valgrind will
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not parse the command line for options at all; all options come
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from this variable. Arguments are terminated by ^A (\001). There
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is no quoting mechanism.
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This variable is not expected to be set by anything other than
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Valgrind itself, as part of its handling of execve with
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--trace-children=yes. This variable should not be present in the
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client environment.
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*/
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#define VALGRINDCLO "_VALGRIND_CLO"
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#endif /* ndef __VG_CONSTANTS_H */
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/*--------------------------------------------------------------------*/
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/*--- end vg_constants.h ---*/
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/*--------------------------------------------------------------------*/
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