mirror of
https://github.com/Zenithsiz/ftmemsim-valgrind.git
synced 2026-02-11 05:55:48 +00:00
139021b70c
perf/tinycc. - run_thread_for_a_while: just clear this thread's reservation when starting, not all of them. - use a different fast-cache hashing function for ppc32/64 than for x86/amd64. This allows the former to use all the fast-cache entries rather than just 1/4 of them. git-svn-id: svn://svn.valgrind.org/valgrind/trunk@5441
64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
|
|
/*--------------------------------------------------------------------*/
|
|
/*--- Asm-only TransTab stuff. pub_core_transtab_asm.h ---*/
|
|
/*--------------------------------------------------------------------*/
|
|
|
|
/*
|
|
This file is part of Valgrind, a dynamic binary instrumentation
|
|
framework.
|
|
|
|
Copyright (C) 2000-2005 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_TRANSTAB_ASM_H
|
|
#define __PUB_CORE_TRANSTAB_ASM_H
|
|
|
|
/* Constants for the fast translation lookup cache. It is a direct
|
|
mapped cache, with 2^VG_TT_FAST_BITS entries.
|
|
|
|
On x86/amd64, the cache index is computed as
|
|
'address[VG_TT_FAST_BITS-1 : 0]'.
|
|
|
|
On ppc32/ppc64, the bottom two bits of instruction addresses are
|
|
zero, which means that function causes only 1/4 of the entries to
|
|
ever be used. So instead the function is '(address >>u
|
|
2)[VG_TT_FAST_BITS-1 : 0]' on those targets. */
|
|
|
|
#define VG_TT_FAST_BITS 15
|
|
#define VG_TT_FAST_SIZE (1 << VG_TT_FAST_BITS)
|
|
#define VG_TT_FAST_MASK ((VG_TT_FAST_SIZE) - 1)
|
|
|
|
/* This macro isn't usable in asm land; nevertheless this seems
|
|
like a good place to put it. */
|
|
#if defined(VGA_x86) || defined(VGA_amd64)
|
|
# define VG_TT_FAST_HASH(_addr) ((((UWord)(_addr)) ) & VG_TT_FAST_MASK)
|
|
#elif defined(VGA_ppc32) || defined(VGA_ppc64)
|
|
# define VG_TT_FAST_HASH(_addr) ((((UWord)(_addr)) >> 2) & VG_TT_FAST_MASK)
|
|
#else
|
|
# error "VG_TT_FAST_HASH: unknown platform"
|
|
#endif
|
|
|
|
#endif // __PUB_CORE_TRANSTAB_ASM_H
|
|
|
|
/*--------------------------------------------------------------------*/
|
|
/*--- end ---*/
|
|
/*--------------------------------------------------------------------*/
|