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50773ee7a1
via the use of self-checking translations. (Friendly platforms which
have icache-invalidation instructions we can observe, such as ppc32,
are already handled correctly.) This should finally fix the
longstanding problem of V incorrectly handling calls of statically
nested functions (a gcc extension), and more generally make it a lot
easier to use V to debug dynamic code generation systems.
Since self-checking is a large performance overhead, there is some
control via a command line flag:
--smc-support=none
Don't make any translations self-checking.
--smc-support=stack
Add checking code for translations taken from segments which
have the SF_GROWDOWN flag set -- stacks, basically.
This is the default. It should make gcc nested functions and
GNU Ada work correctly with no intervention from the user.
--smc-support=all
Make all translations self-checking. This is expensive and
you want to do this if you're debugging a JIT compiler or
some such.
git-svn-id: svn://svn.valgrind.org/valgrind/trunk@4122
79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- The translation table and cache. ---*/
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/*--- pub_core_transtab.h ---*/
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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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#ifndef __PUB_CORE_TRANSTAB_H
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#define __PUB_CORE_TRANSTAB_H
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//--------------------------------------------------------------------
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// PURPOSE: This module is responsible for caching translations, and
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// enabling fast look-ups of them.
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//--------------------------------------------------------------------
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#include "pub_core_transtab_asm.h"
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/* The fast-cache for tt-lookup, and for finding counters. */
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extern ULong* VG_(tt_fast) [VG_TT_FAST_SIZE];
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extern UInt* VG_(tt_fastN)[VG_TT_FAST_SIZE];
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extern void VG_(init_tt_tc) ( void );
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extern
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void VG_(add_to_transtab)( VexGuestExtents* vge,
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Addr64 entry,
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AddrH code,
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UInt code_len,
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Bool is_self_checking );
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extern Bool VG_(search_transtab) ( /*OUT*/AddrH* result,
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Addr64 guest_addr,
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Bool upd_cache );
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extern void VG_(discard_translations) ( Addr64 start, UInt range );
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extern void VG_(print_tt_tc_stats) ( void );
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extern UInt VG_(get_bbs_translated) ( void );
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// BB profiling stuff
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typedef struct _BBProfEntry {
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Addr64 addr;
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ULong score;
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} BBProfEntry;
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extern ULong VG_(get_BB_profile) ( BBProfEntry tops[], UInt n_tops );
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#endif // __PUB_CORE_TRANSTAB_H
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/*--------------------------------------------------------------------*/
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/*--- end ---*/
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/*--------------------------------------------------------------------*/
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