pub_core_transtab.h revision b32f58018498ea2225959b0ba11c18f0c433deef 
1
2/*--------------------------------------------------------------------*/
3/*--- The translation table and cache.                             ---*/
4/*---                                          pub_core_transtab.h ---*/
5/*--------------------------------------------------------------------*/
6
7/*
8   This file is part of Valgrind, a dynamic binary instrumentation
9   framework.
10
11   Copyright (C) 2000-2011 Julian Seward
12      jseward@acm.org
13
14   This program is free software; you can redistribute it and/or
15   modify it under the terms of the GNU General Public License as
16   published by the Free Software Foundation; either version 2 of the
17   License, or (at your option) any later version.
18
19   This program is distributed in the hope that it will be useful, but
20   WITHOUT ANY WARRANTY; without even the implied warranty of
21   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
22   General Public License for more details.
23
24   You should have received a copy of the GNU General Public License
25   along with this program; if not, write to the Free Software
26   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
27   02111-1307, USA.
28
29   The GNU General Public License is contained in the file COPYING.
30*/
31
32#ifndef __PUB_CORE_TRANSTAB_H
33#define __PUB_CORE_TRANSTAB_H
34
35//--------------------------------------------------------------------
36// PURPOSE: This module is responsible for caching translations, and
37// enabling fast look-ups of them.
38//--------------------------------------------------------------------
39
40#include "pub_core_transtab_asm.h"
41
42/* The fast-cache for tt-lookup, and for finding counters.  Unused
43   entries are denoted by .guest == 1, which is assumed to be a bogus
44   address for all guest code. */
45typedef
46   struct {
47      Addr guest;
48      Addr host;
49   }
50   FastCacheEntry;
51
52extern __attribute__((aligned(16)))
53       FastCacheEntry VG_(tt_fast) [VG_TT_FAST_SIZE];
54
55#define TRANSTAB_BOGUS_GUEST_ADDR ((Addr)1)
56
57extern UInt*          VG_(tt_fastN)[VG_TT_FAST_SIZE];
58
59extern void VG_(init_tt_tc)       ( void );
60
61extern
62void VG_(add_to_transtab)( VexGuestExtents* vge,
63                           Addr64           entry,
64                           AddrH            code,
65                           UInt             code_len,
66                           Bool             is_self_checking );
67
68extern Bool VG_(search_transtab) ( /*OUT*/AddrH* result,
69                                   Addr64        guest_addr,
70                                   Bool          upd_cache );
71
72extern void VG_(discard_translations) ( Addr64 start, ULong range,
73                                        HChar* who );
74
75extern void VG_(print_tt_tc_stats) ( void );
76
77extern UInt VG_(get_bbs_translated) ( void );
78
79/* Add to / search the auxiliary, small, unredirected translation
80   table. */
81
82extern
83void VG_(add_to_unredir_transtab)( VexGuestExtents* vge,
84                                   Addr64           entry,
85                                   AddrH            code,
86                                   UInt             code_len );
87extern
88Bool VG_(search_unredir_transtab) ( /*OUT*/AddrH* result,
89                                    Addr64        guest_addr );
90
91// BB profiling stuff
92
93typedef struct _BBProfEntry {
94   Addr64 addr;
95   ULong  score;
96} BBProfEntry;
97
98extern ULong VG_(get_BB_profile) ( BBProfEntry tops[], UInt n_tops );
99
100#endif   // __PUB_CORE_TRANSTAB_H
101
102/*--------------------------------------------------------------------*/
103/*--- end                                                          ---*/
104/*--------------------------------------------------------------------*/
105