m_transtab.c revision 3387dda4479102751d544c176a7bfc24f3766669
1de4a1d01951937632098a6cda45859afa587a06fsewardj 2de4a1d01951937632098a6cda45859afa587a06fsewardj/*--------------------------------------------------------------------*/ 3de4a1d01951937632098a6cda45859afa587a06fsewardj/*--- Management of the translation table and cache. ---*/ 48bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn/*--- m_transtab.c ---*/ 5de4a1d01951937632098a6cda45859afa587a06fsewardj/*--------------------------------------------------------------------*/ 6de4a1d01951937632098a6cda45859afa587a06fsewardj 7de4a1d01951937632098a6cda45859afa587a06fsewardj/* 8b9c427c63a278cc612ae0ec573be7bb1abaa447fnjn This file is part of Valgrind, a dynamic binary instrumentation 9b9c427c63a278cc612ae0ec573be7bb1abaa447fnjn framework. 10de4a1d01951937632098a6cda45859afa587a06fsewardj 11fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Copyright (C) 2000-2005 Julian Seward 12de4a1d01951937632098a6cda45859afa587a06fsewardj jseward@acm.org 13de4a1d01951937632098a6cda45859afa587a06fsewardj 14de4a1d01951937632098a6cda45859afa587a06fsewardj This program is free software; you can redistribute it and/or 15de4a1d01951937632098a6cda45859afa587a06fsewardj modify it under the terms of the GNU General Public License as 16de4a1d01951937632098a6cda45859afa587a06fsewardj published by the Free Software Foundation; either version 2 of the 17de4a1d01951937632098a6cda45859afa587a06fsewardj License, or (at your option) any later version. 18de4a1d01951937632098a6cda45859afa587a06fsewardj 19de4a1d01951937632098a6cda45859afa587a06fsewardj This program is distributed in the hope that it will be useful, but 20de4a1d01951937632098a6cda45859afa587a06fsewardj WITHOUT ANY WARRANTY; without even the implied warranty of 21de4a1d01951937632098a6cda45859afa587a06fsewardj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22de4a1d01951937632098a6cda45859afa587a06fsewardj General Public License for more details. 23de4a1d01951937632098a6cda45859afa587a06fsewardj 24de4a1d01951937632098a6cda45859afa587a06fsewardj You should have received a copy of the GNU General Public License 25de4a1d01951937632098a6cda45859afa587a06fsewardj along with this program; if not, write to the Free Software 26de4a1d01951937632098a6cda45859afa587a06fsewardj Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 27de4a1d01951937632098a6cda45859afa587a06fsewardj 02111-1307, USA. 28de4a1d01951937632098a6cda45859afa587a06fsewardj 29e49d8e7dfd3a9c96feb9935b5920973dfc0b170anjn The GNU General Public License is contained in the file COPYING. 30de4a1d01951937632098a6cda45859afa587a06fsewardj*/ 31de4a1d01951937632098a6cda45859afa587a06fsewardj 32c7561b931e249acf3768ead77638545b0ccaa8f1njn#include "pub_core_basics.h" 3345f4e7c91119c7d01a59f5e827c67841632c9314sewardj#include "pub_core_debuglog.h" 341f0d814045aba94e01e62e04e968ca8b970b3d44cerion#include "pub_core_machine.h" // For VG(machine_get_VexArchInfo) 3597405b2d134b52880d6dbec3eb2929e2002c2542njn#include "pub_core_libcbase.h" 36132bfccd21960e462352175f8553a5bdce8a210cnjn#include "pub_core_libcassert.h" 3736a20fa5f779a0a6fb7b4a90dcaa6376481f1faanjn#include "pub_core_libcprint.h" 382024234c590f408994b373abfb00bc2cd2a90c48njn#include "pub_core_options.h" 3910f08cf5b84882eebbb6712a7be890577650e8adsewardj#include "pub_core_tooliface.h" // For VG_(details).avg_translation_sizeB 408bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn#include "pub_core_transtab.h" 4145f4e7c91119c7d01a59f5e827c67841632c9314sewardj#include "pub_core_aspacemgr.h" 4245f4e7c91119c7d01a59f5e827c67841632c9314sewardj#include "pub_core_mallocfree.h" // VG_(out_of_memory_NORETURN) 43de4a1d01951937632098a6cda45859afa587a06fsewardj 4418d7513cc08bf982711c8a22b70d56af6aa87b33sewardj/* #define DEBUG_TRANSTAB */ 4518d7513cc08bf982711c8a22b70d56af6aa87b33sewardj 46de4a1d01951937632098a6cda45859afa587a06fsewardj 476c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*-------------------------------------------------------------*/ 486c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*--- Management of the FIFO-based translation table+cache. ---*/ 496c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*-------------------------------------------------------------*/ 50de4a1d01951937632098a6cda45859afa587a06fsewardj 516c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*------------------ CONSTANTS ------------------*/ 52de4a1d01951937632098a6cda45859afa587a06fsewardj 53fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of sectors the TC is divided into. If you need a larger 54fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj overall translation cache, increase this value. */ 55fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj#define N_SECTORS 8 56de4a1d01951937632098a6cda45859afa587a06fsewardj 57fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of TC entries in each sector. This needs to be a prime 586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj number to work properly, it must be <= 65535 (so that a TT index 596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj fits in a UShort, leaving room for 0xFFFF(EC2TTE_DELETED) to denote 606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 'deleted') and it is strongly recommended not to change this. 616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 65521 is the largest prime <= 65535. */ 626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define N_TTES_PER_SECTOR /*30011*/ /*40009*/ 65521 63de4a1d01951937632098a6cda45859afa587a06fsewardj 64fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Because each sector contains a hash table of TTEntries, we need to 65fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj specify the maximum allowable loading, after which the sector is 66fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj deemed full. */ 676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define SECTOR_TT_LIMIT_PERCENT 80 68de4a1d01951937632098a6cda45859afa587a06fsewardj 69fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* The sector is deemed full when this many entries are in it. */ 70fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj#define N_TTES_PER_SECTOR_USABLE \ 71fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ((N_TTES_PER_SECTOR * SECTOR_TT_LIMIT_PERCENT) / 100) 726c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Equivalence classes for fast address range deletion. There are 1 + 746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 2^ECLASS_WIDTH bins. The highest one, ECLASS_MISC, describes an 756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj address range which does not fall cleanly within any specific bin. 766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Note that ECLASS_SHIFT + ECLASS_WIDTH must be < 32. */ 776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_SHIFT 11 786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_WIDTH 8 796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_MISC (1 << ECLASS_WIDTH) 806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_N (1 + ECLASS_MISC) 816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define EC2TTE_DELETED 0xFFFF /* 16-bit special value */ 836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 84de4a1d01951937632098a6cda45859afa587a06fsewardj 856c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*------------------ TYPES ------------------*/ 86de4a1d01951937632098a6cda45859afa587a06fsewardj 87fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* A translation-cache entry is two parts: 88fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj - The guest address of the first (entry) bb in the translation, 89fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj as a 64-bit word. 90fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj - One or more 64-bit words containing the code. 91fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj It is supposed to be 64-bit aligned. 92fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 93fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* 946c3769f487145a08c01b58d6e5db3ba274062ad4sewardjtypedef 95fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj struct { 96fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Addr64 orig_addr; 97fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong code[0]; 986c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 996c3769f487145a08c01b58d6e5db3ba274062ad4sewardj TCEntry; 100fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 1016c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 102fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* A translation-table entry. This indicates precisely which areas of 103fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj guest code are included in the translation, and contains all other 104fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj auxiliary info too. */ 1056c3769f487145a08c01b58d6e5db3ba274062ad4sewardjtypedef 1066c3769f487145a08c01b58d6e5db3ba274062ad4sewardj struct { 107fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Profiling only: the count and weight (arbitrary meaning) for 108fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj this translation. Weight is a property of the translation 109fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj itself and computed once when the translation is created. 110fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Count is an entry count for the translation and is 111fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj incremented by 1 every time the translation is used, if we 112fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj are profiling. */ 113fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt count; 114fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UShort weight; 115fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 116fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Status of the slot. Note, we need to be able to do lazy 117fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj deletion, hence the Deleted state. */ 118fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj enum { InUse, Deleted, Empty } status; 119fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 120fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Pointer to the corresponding TCEntry (must be in the same 121fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector!) */ 122fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong* tce; 123fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 124fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This is the original guest address that purportedly is the 125fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj entry point of the translation. You might think that .entry 126fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj should be the same as .vge->base[0], and most of the time it 127fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj is. However, when doing redirections, that is not the case. 128fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj .vge must always correctly describe the guest code sections 129fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj from which this translation was made. However, .entry may or 130fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj may not be a lie, depending on whether or not we're doing 131fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj redirection. */ 132fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Addr64 entry; 133fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 134fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This structure describes precisely what ranges of guest code 135fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj the translation covers, so we can decide whether or not to 136fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj delete it when translations of a given address range are 137fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidated. */ 138fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VexGuestExtents vge; 1396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Address range summary info: these are pointers back to 1416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclass[] entries in the containing Sector. Those entries in 1426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj turn point back here -- the two structures are mutually 1436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj redundant but both necessary to make fast deletions work. 1446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj The eclass info is similar to, and derived from, this entry's 1456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 'vge' field, but it is not the same */ 1466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort n_tte2ec; // # tte2ec pointers (1 to 3) 1476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort tte2ec_ec[3]; // for each, the eclass # 1486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt tte2ec_ix[3]; // and the index within the eclass. 1496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // for i in 0 .. n_tte2ec-1 1506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // sec->ec2tte[ tte2ec_ec[i] ][ tte2ec_ix[i] ] 1516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // should be the index 1526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // of this TTEntry in the containing Sector's tt array. 1536c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 1546c3769f487145a08c01b58d6e5db3ba274062ad4sewardj TTEntry; 1556c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 1564ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 157fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Finally, a sector itself. Each sector contains an array of 158fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj TCEntries, which hold code, and an array of TTEntries, containing 159fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj all required administrative info. Profiling is supported using the 160fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj TTEntry .count and .weight fields, if required. Each sector is 161fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj independent in that no cross-sector references are allowed. 1624ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 163fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj If the sector is not in use, all three pointers are NULL and 164fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tt_n_inuse is zero. 165fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 166fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjtypedef 167fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj struct { 168fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* The TCEntry area. Size of this depends on the average 169fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj translation size. We try and size it so it becomes full 170fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj precisely when this sector's translation table (tt) reaches 171fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj its load limit (SECTOR_TT_LIMIT_PERCENT). */ 172fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong* tc; 1734ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 174fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* The TTEntry array. This is a fixed size, always containing 175fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj exactly N_TTES_PER_SECTOR entries. */ 176fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj TTEntry* tt; 1776c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 178fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This points to the current allocation point in tc. */ 179fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong* tc_next; 180de4a1d01951937632098a6cda45859afa587a06fsewardj 181fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* The count of tt entries with state InUse. */ 182fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int tt_n_inuse; 1836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Expandable arrays of tt indices for each of the ECLASS_N 1856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj address range equivalence classes. These hold indices into 1866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj the containing sector's tt array, which in turn should point 1876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj back here. */ 1886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int ec2tte_size[ECLASS_N]; 1896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int ec2tte_used[ECLASS_N]; 1906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort* ec2tte[ECLASS_N]; 191fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 192fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Sector; 193de4a1d01951937632098a6cda45859afa587a06fsewardj 194de4a1d01951937632098a6cda45859afa587a06fsewardj 1956c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*------------------ DECLS ------------------*/ 1966c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 197fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* The root data structure is an array of sectors. The index of the 198fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest sector is recorded, and new translations are put into that 199fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector. When it fills up, we move along to the next sector and 200fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj start to fill that up, wrapping around at the end of the array. 201fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj That way, once all N_TC_SECTORS have been bought into use for the 202fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj first time, and are full, we then re-use the oldest sector, 203fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj endlessly. 204fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 205fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj When running, youngest sector should be between >= 0 and < 206fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_TC_SECTORS. The initial -1 value indicates the TT/TC system is 207fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj not yet initialised. 208fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 209fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Sector sectors[N_SECTORS]; 210fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Int youngest_sector = -1; 2116c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 212fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* The number of ULongs in each TCEntry area. This is computed once 213fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj at startup and does not change. */ 214fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Int tc_sector_szQ; 2156c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 2166c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 217fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Fast helper for the TC. A direct-mapped cache which holds a 218fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj pointer to a TC entry which may or may not be the correct one, but 219fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj which we hope usually is. This array is referred to directly from 220fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj <arch>/dispatch.S. 2216c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 222fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Entries in tt_fast may point to any valid TC entry, regardless of 223fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj which sector it's in. Consequently we must be very careful to 224fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidate this cache when TC entries are changed or disappear. 225c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj 226fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj A special TCEntry -- bogus_tc_entry -- must be pointed at to cause 227fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj that cache entry to miss. This relies on the assumption that no 228fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj guest code actually has an address of 0x1. 229fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 230fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*global*/ ULong* VG_(tt_fast)[VG_TT_FAST_SIZE]; 23192e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote 232fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic ULong bogus_tc_entry = (Addr64)1; 23392e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote 23492e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote 235fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* For profiling, we have a parallel array of pointers to .count 236fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj fields in TT entries. Again, these pointers must be invalidated 237fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj when translations disappear. A NULL pointer suffices to indicate 238fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj an unused slot. 2396c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 240fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tt_fast and tt_fastN change together: if tt_fast[i] points to 241fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj bogus_tc_entry then the corresponding tt_fastN[i] must be null. If 242fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tt_fast[i] points to some TC entry somewhere, then tt_fastN[i] 243fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj *must* point to the .count field of the corresponding TT entry. 2446c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 245fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tt_fast and tt_fastN are referred to from assembly code 246fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj (dispatch.S). 247fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 248fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*global*/ UInt* VG_(tt_fastN)[VG_TT_FAST_SIZE]; 249de4a1d01951937632098a6cda45859afa587a06fsewardj 250de4a1d01951937632098a6cda45859afa587a06fsewardj 251663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj/* Make sure we're not used before initialisation. */ 252663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardjstatic Bool init_done = False; 253663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 254663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 255fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------ STATS DECLS ------------------*/ 256de4a1d01951937632098a6cda45859afa587a06fsewardj 257fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of fast-cache updates and flushes done. */ 258fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_fast_flushes = 0; 259fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_fast_updates = 0; 26022854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 261fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of full lookups done. */ 262fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_full_lookups = 0; 263fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_lookup_probes = 0; 26422854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 26526412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj/* Number/osize/tsize of translations entered; also the number of 26626412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj those for which self-checking was requested. */ 26726412bd2c4ef3e55683141f132ebd1eb32d8530bsewardjULong n_in_count = 0; 26826412bd2c4ef3e55683141f132ebd1eb32d8530bsewardjULong n_in_osize = 0; 26926412bd2c4ef3e55683141f132ebd1eb32d8530bsewardjULong n_in_tsize = 0; 27026412bd2c4ef3e55683141f132ebd1eb32d8530bsewardjULong n_in_sc_count = 0; 271de4a1d01951937632098a6cda45859afa587a06fsewardj 272fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number/osize of translations discarded due to lack of space. */ 273fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_dump_count = 0; 274fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_dump_osize = 0; 275fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 276fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number/osize of translations discarded due to requests to do so. */ 277fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_disc_count = 0; 278fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjULong n_disc_osize = 0; 279fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 280fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 2826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*--- Address-range equivalence class stuff ---*/ 2836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 2846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 2856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Return equivalence class number for a range. */ 2866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 2876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic Int range_to_eclass ( Addr64 start, UInt len ) 2886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 2896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt mask = (1 << ECLASS_WIDTH) - 1; 2906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt lo = (UInt)start; 2916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt hi = lo + len - 1; 2926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt loBits = (lo >> ECLASS_SHIFT) & mask; 2936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt hiBits = (hi >> ECLASS_SHIFT) & mask; 2946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (loBits == hiBits) { 2956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(loBits < ECLASS_N-1); 2966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return loBits; 2976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 2986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return ECLASS_MISC; 2996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 3006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 3016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Calculates the equivalence class numbers for any VexGuestExtent. 3046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj These are written in *eclasses, which must be big enough to hold 3 3056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Ints. The number written, between 1 and 3, is returned. The 3066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclasses are presented in order, and any duplicates are removed. 3076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj*/ 3086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 3106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjInt vexGuestExtents_to_eclasses ( /*OUT*/Int* eclasses, 3116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VexGuestExtents* vge ) 3126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 3136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# define SWAP(_lv1,_lv2) \ 3146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj do { Int t = _lv1; _lv1 = _lv2; _lv2 = t; } while (0) 3156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, j, n_ec, r; 3176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(vge->n_used >= 1 && vge->n_used <= 3); 3196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_ec = 0; 3216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < vge->n_used; i++) { 3226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj r = range_to_eclass( vge->base[i], (UInt)vge->len[i] ); 3236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (r == ECLASS_MISC) 3246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj goto bad; 3256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* only add if we haven't already seen it */ 3266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < n_ec; j++) 3276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[j] == r) 3286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj break; 3296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (j == n_ec) 3306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclasses[n_ec++] = r; 3316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 3326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n_ec == 1) 3346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 1; 3356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n_ec == 2) { 3376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* sort */ 3386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[0] > eclasses[1]) 3396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[0], eclasses[1]); 3406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 2; 3416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 3426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n_ec == 3) { 3446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* sort */ 3456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[0] > eclasses[2]) 3466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[0], eclasses[2]); 3476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[0] > eclasses[1]) 3486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[0], eclasses[1]); 3496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[1] > eclasses[2]) 3506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[1], eclasses[2]); 3516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 3; 3526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 3536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* NOTREACHED */ 3556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(0); 3566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj bad: 3586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclasses[0] = ECLASS_MISC; 3596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 1; 3606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# undef SWAP 3626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 3636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Add tteno to the set of entries listed for equivalence class ec in 3666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj this sector. Returns used location in eclass array. */ 3676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 3696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjUInt addEClassNo ( /*MOD*/Sector* sec, Int ec, UShort tteno ) 3706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 3716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int old_sz, new_sz, i, r; 3726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort *old_ar, *new_ar; 3736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec >= 0 && ec < ECLASS_N); 3756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno < N_TTES_PER_SECTOR); 3766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (0) VG_(printf)("ec %d gets %d\n", ec, (Int)tteno); 3786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_used[ec] >= sec->ec2tte_size[ec]) { 3806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_used[ec] == sec->ec2tte_size[ec]); 3826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj old_sz = sec->ec2tte_size[ec]; 3846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj old_ar = sec->ec2tte[ec]; 3856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj new_sz = old_sz==0 ? 8 : old_sz<64 ? 2*old_sz : (3*old_sz)/2; 3866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj new_ar = VG_(arena_malloc)(VG_AR_TTAUX, new_sz * sizeof(UShort)); 3876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < old_sz; i++) 3886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj new_ar[i] = old_ar[i]; 3896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (old_ar) 3906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(arena_free)(VG_AR_TTAUX, old_ar); 3916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte_size[ec] = new_sz; 3926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[ec] = new_ar; 3936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (0) VG_(printf)("expand ec %d to %d\n", ec, new_sz); 3956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 3966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Common case */ 3986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj r = sec->ec2tte_used[ec]++; 3996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(r >= 0 && r < sec->ec2tte_size[ec]); 4006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[ec][r] = tteno; 4016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return (UInt)r; 4026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 4036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* 'vge' is being added to 'sec' at TT entry 'tteno'. Add appropriate 4066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclass entries to 'sec'. */ 4076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 4096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjvoid upd_eclasses_after_add ( /*MOD*/Sector* sec, Int tteno ) 4106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 4116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, r, eclasses[3]; 4126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 4136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno >= 0 && tteno < N_TTES_PER_SECTOR); 4146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 4166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj r = vexGuestExtents_to_eclasses( eclasses, &tte->vge ); 4176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(r >= 1 && r <= 3); 4196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->n_tte2ec = r; 4206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < r; i++) { 4226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->tte2ec_ec[i] = eclasses[i]; 4236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->tte2ec_ix[i] = addEClassNo( sec, eclasses[i], (UShort)tteno ); 4246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 4256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 4266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Check the eclass info in 'sec' to ensure it is consistent. Returns 4296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj True if OK, False if something's not right. Expensive. */ 4306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic Bool sanity_check_eclasses_in_sector ( Sector* sec ) 4326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 4336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# define BAD(_str) do { whassup = (_str); goto bad; } while (0) 4346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj HChar* whassup = NULL; 4366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, j, k, n, ec_num, ec_idx; 4376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 4386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort tteno; 4396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ULong* tce; 4406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Basic checks on this sector */ 4426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tt_n_inuse < 0 || sec->tt_n_inuse > N_TTES_PER_SECTOR_USABLE) 4436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("invalid sec->tt_n_inuse"); 4446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tce = sec->tc_next; 4456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tce < &sec->tc[0] || tce > &sec->tc[tc_sector_szQ]) 4466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("sec->tc_next points outside tc"); 4476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* For each eclass ... */ 4496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 4506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_size[i] == 0 && sec->ec2tte[i] != NULL) 4516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("ec2tte_size/ec2tte mismatch(1)"); 4526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_size[i] != 0 && sec->ec2tte[i] == NULL) 4536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("ec2tte_size/ec2tte mismatch(2)"); 4546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_used[i] < 0 4556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj || sec->ec2tte_used[i] > sec->ec2tte_size[i]) 4566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("implausible ec2tte_used"); 4576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_used[i] == 0) 4586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 4596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* For each tt reference in each eclass .. ensure the reference 4616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj is to a valid tt entry, and that the entry's address ranges 4626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj really include this eclass. */ 4636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < sec->ec2tte_used[i]; j++) { 4656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tteno = sec->ec2tte[i][j]; 4666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tteno == EC2TTE_DELETED) 4676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 4686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tteno >= N_TTES_PER_SECTOR) 4696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("implausible tteno"); 4706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 4716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status != InUse) 4726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tteno points to non-inuse tte"); 4736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->n_tte2ec < 1 || tte->n_tte2ec > 3) 4746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->n_tte2ec out of range"); 4756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Exactly least one of tte->eclasses[0 .. tte->n_eclasses-1] 4766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj must equal i. Inspect tte's eclass info. */ 4776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n = 0; 4786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (k = 0; k < tte->n_tte2ec; k++) { 4796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (k < tte->n_tte2ec-1 4806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj && tte->tte2ec_ec[k] >= tte->tte2ec_ec[k+1]) 4816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->tte2ec_ec[..] out of order"); 4826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_num = tte->tte2ec_ec[k]; 4836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_num < 0 || ec_num >= ECLASS_N) 4846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->tte2ec_ec[..] out of range"); 4856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_num != i) 4866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 4876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_idx = tte->tte2ec_ix[k]; 4886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_idx < 0 || ec_idx >= sec->ec2tte_used[i]) 4896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->tte2ec_ix[..] out of range"); 4906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_idx == j) 4916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n++; 4926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 4936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n != 1) 4946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tteno does not point back at eclass"); 4956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 4966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 4976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 4986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* That establishes that for each forward pointer from TTEntrys 4996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj there is a corresponding backward pointer from the eclass[] 5006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj arrays. However, it doesn't rule out the possibility of other, 5016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj bogus pointers in the eclass[] arrays. So do those similarly: 5026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj scan through them and check the TTEntryies they point at point 5036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj back. */ 5046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR_USABLE; i++) { 5066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[i]; 5086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status == Empty || tte->status == Deleted) { 5096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->n_tte2ec != 0) 5106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->n_eclasses nonzero for unused tte"); 5116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 5126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 5136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->status == InUse); 5156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->n_tte2ec < 1 || tte->n_tte2ec > 3) 5176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->n_eclasses out of range(2)"); 5186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < tte->n_tte2ec; j++) { 5206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_num = tte->tte2ec_ec[j]; 5216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_num < 0 || ec_num >= ECLASS_N) 5226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->eclass[..] out of range"); 5236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_idx = tte->tte2ec_ix[j]; 5246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_idx < 0 || ec_idx >= sec->ec2tte_used[ec_num]) 5256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->ec_idx[..] out of range(2)"); 5266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte[ec_num][ec_idx] != i) 5276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("ec2tte does not point back to tte"); 5286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 5296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 5306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return True; 5326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj bad: 5346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (whassup) 5356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(debugLog)(0, "transtab", "eclass sanity fail: %s\n", whassup); 5366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# if 0 5386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("eclass = %d\n", i); 5396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("tteno = %d\n", (Int)tteno); 5406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj switch (tte->status) { 5416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj case InUse: VG_(printf)("InUse\n"); break; 5426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj case Deleted: VG_(printf)("Deleted\n"); break; 5436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj case Empty: VG_(printf)("Empty\n"); break; 5446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 5456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status != Empty) { 5466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (k = 0; k < tte->vge.n_used; k++) 5476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("0x%llx %d\n", tte->vge.base[k], 5486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj (Int)tte->vge.len[k]); 5496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 5506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# endif 5516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return False; 5536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# undef BAD 5556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 5566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Sanity check absolutely everything. True == check passed. */ 5596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 5606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic Bool sanity_check_all_sectors ( void ) 5616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 5626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int sno; 5636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool sane; 5646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Sector* sec; 5656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 5666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 5676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 5686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 5696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sane = sanity_check_eclasses_in_sector( sec ); 5706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (!sane) 5716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return False; 5726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 5736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return True; 5746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 5756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 576fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 577fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*-------------------------------------------------------------*/ 5786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*--- Add/find translations ---*/ 579fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*-------------------------------------------------------------*/ 580fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 581fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic UInt vge_osize ( VexGuestExtents* vge ) 582c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj{ 583fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt i, n = 0; 584fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < vge->n_used; i++) 585fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n += (UInt)vge->len[i]; 586fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return n; 587c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj} 588c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj 589fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Bool isValidSector ( Int sector ) 5906c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 591fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sector < 0 || sector >= N_SECTORS) 592fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 593fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 5946c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 595de4a1d01951937632098a6cda45859afa587a06fsewardj 596fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic inline UInt HASH_TT ( Addr64 key ) 597de4a1d01951937632098a6cda45859afa587a06fsewardj{ 598fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt kHi = (UInt)(key >> 32); 599fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt kLo = (UInt)key; 6006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt k32 = kHi ^ kLo; 6016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt ror = 7; 6026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ror > 0) 6036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj k32 = (k32 >> ror) | (k32 << (32-ror)); 6046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return k32 % N_TTES_PER_SECTOR; 605de4a1d01951937632098a6cda45859afa587a06fsewardj} 606de4a1d01951937632098a6cda45859afa587a06fsewardj 607fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic void setFastCacheEntry ( Addr64 key, ULong* tce, UInt* count ) 608de4a1d01951937632098a6cda45859afa587a06fsewardj{ 6093387dda4479102751d544c176a7bfc24f3766669sewardj UInt cno = (UInt)VG_TT_FAST_HASH(key); 610fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(tt_fast)[cno] = tce; 611fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(tt_fastN)[cno] = count; 612fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_fast_updates++; 6136c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 614de4a1d01951937632098a6cda45859afa587a06fsewardj 615fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic void invalidateFastCache ( void ) 6166c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 617fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt j; 61865e193939481231a8f6699201258e0a2828357e8sewardj /* This loop is popular enough to make it worth unrolling a 61965e193939481231a8f6699201258e0a2828357e8sewardj bit, at least on ppc32. */ 62065e193939481231a8f6699201258e0a2828357e8sewardj vg_assert(VG_TT_FAST_SIZE > 0 && (VG_TT_FAST_SIZE % 4) == 0); 62165e193939481231a8f6699201258e0a2828357e8sewardj for (j = 0; j < VG_TT_FAST_SIZE; j += 4) { 62265e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fast)[j+0] = &bogus_tc_entry; 62365e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fast)[j+1] = &bogus_tc_entry; 62465e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fast)[j+2] = &bogus_tc_entry; 62565e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fast)[j+3] = &bogus_tc_entry; 62665e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fastN)[j+0] = NULL; 62765e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fastN)[j+1] = NULL; 62865e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fastN)[j+2] = NULL; 62965e193939481231a8f6699201258e0a2828357e8sewardj VG_(tt_fastN)[j+3] = NULL; 6306c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 63165e193939481231a8f6699201258e0a2828357e8sewardj vg_assert(j == VG_TT_FAST_SIZE); 632fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_fast_flushes++; 6336c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 634de4a1d01951937632098a6cda45859afa587a06fsewardj 635fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic void initialiseSector ( Int sno ) 6366c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 63745f4e7c91119c7d01a59f5e827c67841632c9314sewardj Int i; 63845f4e7c91119c7d01a59f5e827c67841632c9314sewardj SysRes sres; 6396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Sector* sec; 640fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(isValidSector(sno)); 641fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 6426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 6436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 6446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) { 6456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 646fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Sector has never been used before. Need to allocate tt and 647fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tc. */ 6486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt == NULL); 6496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tc_next == NULL); 6506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt_n_inuse == 0); 6516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 6526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_size[i] == 0); 6536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_used[i] == 0); 6546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[i] == NULL); 6556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 65645f4e7c91119c7d01a59f5e827c67841632c9314sewardj 65745f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(1,"transtab", "allocate sector %d\n", sno); 65845f4e7c91119c7d01a59f5e827c67841632c9314sewardj 65945f4e7c91119c7d01a59f5e827c67841632c9314sewardj sres = VG_(am_mmap_anon_float_valgrind)( 8 * tc_sector_szQ ); 66045f4e7c91119c7d01a59f5e827c67841632c9314sewardj if (sres.isError) { 66145f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(out_of_memory_NORETURN)("initialiseSector(TC)", 66245f4e7c91119c7d01a59f5e827c67841632c9314sewardj 8 * tc_sector_szQ ); 66345f4e7c91119c7d01a59f5e827c67841632c9314sewardj /*NOTREACHED*/ 66445f4e7c91119c7d01a59f5e827c67841632c9314sewardj } 6656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tc = (ULong*)sres.val; 66645f4e7c91119c7d01a59f5e827c67841632c9314sewardj 66745f4e7c91119c7d01a59f5e827c67841632c9314sewardj sres = VG_(am_mmap_anon_float_valgrind) 66845f4e7c91119c7d01a59f5e827c67841632c9314sewardj ( N_TTES_PER_SECTOR * sizeof(TTEntry) ); 66945f4e7c91119c7d01a59f5e827c67841632c9314sewardj if (sres.isError) { 67045f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(out_of_memory_NORETURN)("initialiseSector(TT)", 67145f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_TTES_PER_SECTOR * sizeof(TTEntry) ); 67245f4e7c91119c7d01a59f5e827c67841632c9314sewardj /*NOTREACHED*/ 67345f4e7c91119c7d01a59f5e827c67841632c9314sewardj } 6746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt = (TTEntry*)sres.val; 6756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 6766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 6776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].status = Empty; 6786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].n_tte2ec = 0; 6796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 68045f4e7c91119c7d01a59f5e827c67841632c9314sewardj 681fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) 682fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, "TT/TC: initialise sector %d", sno); 6836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 684fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } else { 6856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 6866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Sector has been used before. Dump the old contents. */ 68745f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(1,"transtab", "recycle sector %d\n", sno); 6886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt != NULL); 6896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tc_next != NULL); 6906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_dump_count += sec->tt_n_inuse; 6916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 6926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Visit each just-about-to-be-abandoned translation. */ 693fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 6946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tt[i].status == InUse) { 6956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt[i].n_tte2ec >= 1); 6966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt[i].n_tte2ec <= 3); 6976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_dump_osize += vge_osize(&sec->tt[i].vge); 6983786772222c5b31fd6cc5586bcd1ce0da58f1dbesewardj /* Tell the tool too. */ 6993786772222c5b31fd6cc5586bcd1ce0da58f1dbesewardj if (VG_(needs).basic_block_discards) { 7003786772222c5b31fd6cc5586bcd1ce0da58f1dbesewardj VG_TDICT_CALL( tool_discard_basic_block_info, 7014ba057cce1d81a949f5a899b5abb99e90a731bccsewardj sec->tt[i].entry, 7026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].vge ); 7033786772222c5b31fd6cc5586bcd1ce0da58f1dbesewardj } 7046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 7056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt[i].n_tte2ec == 0); 7066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 7076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].status = Empty; 7086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].n_tte2ec = 0; 7096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 7106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 7116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Free up the eclass structures. */ 7126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 7136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_size[i] == 0) { 7146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_used[i] == 0); 7156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[i] == NULL); 7166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 7176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[i] != NULL); 7186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(arena_free)(VG_AR_TTAUX, sec->ec2tte[i]); 7196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[i] = NULL; 7206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte_size[i] = 0; 7216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte_used[i] = 0; 722fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 723fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 7246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 725fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) 726fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, "TT/TC: recycle sector %d", sno); 7276c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 7284ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 7296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tc_next = sec->tc; 7306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt_n_inuse = 0; 731fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 732fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidateFastCache(); 7336c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 734de4a1d01951937632098a6cda45859afa587a06fsewardj 73510f08cf5b84882eebbb6712a7be890577650e8adsewardjstatic void invalidate_icache ( void *ptr, Int nbytes ) 73685665ca6fa29dd64754dabe50eb98f25896e752acerion{ 7372c48c7b0a453d32375a4df17e153011b797ef28csewardj# if defined(VGA_ppc32) || defined(VGA_ppc64) 73810f08cf5b84882eebbb6712a7be890577650e8adsewardj Addr startaddr = (Addr) ptr; 73910f08cf5b84882eebbb6712a7be890577650e8adsewardj Addr endaddr = startaddr + nbytes; 740e3826cfe34ec9a0caa570a0d15647b28711584a0sewardj Addr cls; 74110f08cf5b84882eebbb6712a7be890577650e8adsewardj Addr addr; 742e3826cfe34ec9a0caa570a0d15647b28711584a0sewardj VexArchInfo vai; 743e3826cfe34ec9a0caa570a0d15647b28711584a0sewardj 744e3826cfe34ec9a0caa570a0d15647b28711584a0sewardj VG_(machine_get_VexArchInfo)( NULL, &vai ); 7451f0d814045aba94e01e62e04e968ca8b970b3d44cerion cls = vai.ppc_cache_line_szB; 74610f08cf5b84882eebbb6712a7be890577650e8adsewardj 7472bf6ba55b04ea9a58098f041c5ee149539c0f081sewardj /* Stay sane .. */ 7482bf6ba55b04ea9a58098f041c5ee149539c0f081sewardj vg_assert(cls == 32 || cls == 128); 74985665ca6fa29dd64754dabe50eb98f25896e752acerion 75085665ca6fa29dd64754dabe50eb98f25896e752acerion startaddr &= ~(cls - 1); 75185665ca6fa29dd64754dabe50eb98f25896e752acerion for (addr = startaddr; addr < endaddr; addr += cls) 75285665ca6fa29dd64754dabe50eb98f25896e752acerion asm volatile("dcbst 0,%0" : : "r" (addr)); 75385665ca6fa29dd64754dabe50eb98f25896e752acerion asm volatile("sync"); 75485665ca6fa29dd64754dabe50eb98f25896e752acerion for (addr = startaddr; addr < endaddr; addr += cls) 75585665ca6fa29dd64754dabe50eb98f25896e752acerion asm volatile("icbi 0,%0" : : "r" (addr)); 75685665ca6fa29dd64754dabe50eb98f25896e752acerion asm volatile("sync; isync"); 75710f08cf5b84882eebbb6712a7be890577650e8adsewardj 75810f08cf5b84882eebbb6712a7be890577650e8adsewardj# elif defined(VGA_x86) 75910f08cf5b84882eebbb6712a7be890577650e8adsewardj /* no need to do anything, hardware provides coherence */ 76010f08cf5b84882eebbb6712a7be890577650e8adsewardj 76110f08cf5b84882eebbb6712a7be890577650e8adsewardj# elif defined(VGA_amd64) 76210f08cf5b84882eebbb6712a7be890577650e8adsewardj /* no need to do anything, hardware provides coherence */ 76310f08cf5b84882eebbb6712a7be890577650e8adsewardj 76410f08cf5b84882eebbb6712a7be890577650e8adsewardj# else 76510f08cf5b84882eebbb6712a7be890577650e8adsewardj# error "Unknown ARCH" 76610f08cf5b84882eebbb6712a7be890577650e8adsewardj# endif 76785665ca6fa29dd64754dabe50eb98f25896e752acerion} 76885665ca6fa29dd64754dabe50eb98f25896e752acerion 769de4a1d01951937632098a6cda45859afa587a06fsewardj 770fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Add a translation of vge to TT/TC. The translation is temporarily 771fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj in code[0 .. code_len-1]. 772de4a1d01951937632098a6cda45859afa587a06fsewardj 773fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj pre: youngest_sector points to a valid (although possibly full) 774fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector. 775fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 7768bddf58af8cc7342d4bde6712c5a6a33bf2850d4njnvoid VG_(add_to_transtab)( VexGuestExtents* vge, 7778bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn Addr64 entry, 7788bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn AddrH code, 77926412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj UInt code_len, 78026412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj Bool is_self_checking ) 78122854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj{ 782fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int tcAvailQ, reqdQ, y, i; 783fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong *tce, *tce2; 784fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UChar* srcP; 785fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UChar* dstP; 786fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 787663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(init_done); 788fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(vge->n_used >= 1 && vge->n_used <= 3); 789fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(code_len > 0 && code_len < 20000); 790fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 791fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (0) 7928bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn VG_(printf)("add_to_transtab(entry = 0x%llx, len = %d)\n", 793fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj entry, code_len); 794fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 795fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_count++; 796fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_tsize += code_len; 797fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_osize += vge_osize(vge); 79826412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj if (is_self_checking) 79926412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj n_in_sc_count++; 800fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 801fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj y = youngest_sector; 802fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(isValidSector(y)); 803fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 804fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[y].tc == NULL) 805fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj initialiseSector(y); 806fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 807fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Try putting the translation in this sector. */ 808fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj reqdQ = 1 + ((code_len + 7) >> 3); 809fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 810fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Will it fit in tc? */ 811fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tcAvailQ = ((ULong*)(§ors[y].tc[tc_sector_szQ])) 812fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj - ((ULong*)(sectors[y].tc_next)); 813fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ >= 0); 814fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ <= tc_sector_szQ); 815fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 816fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (tcAvailQ < reqdQ 817fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj || sectors[y].tt_n_inuse >= N_TTES_PER_SECTOR_USABLE) { 818fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* No. So move on to the next sector. Either it's never been 819fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj used before, in which case it will get its tt/tc allocated 820fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj now, or it has been used before, in which case it is set to be 821fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj empty, hence throwing out the oldest sector. */ 822a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj vg_assert(tc_sector_szQ > 0); 823a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj VG_(debugLog)(1,"transtab", 824a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj "declare sector %d full " 825a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj "(TT loading %2d%%, TC loading %2d%%)\n", 826a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj y, 827a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj (100 * sectors[y].tt_n_inuse) 828a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj / N_TTES_PER_SECTOR, 829a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj (100 * (tc_sector_szQ - tcAvailQ)) 830a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj / tc_sector_szQ); 831fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest_sector++; 832fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (youngest_sector >= N_SECTORS) 833fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest_sector = 0; 834fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj y = youngest_sector; 835fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj initialiseSector(y); 836fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 83722854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 838fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Be sure ... */ 839fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tcAvailQ = ((ULong*)(§ors[y].tc[tc_sector_szQ])) 840fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj - ((ULong*)(sectors[y].tc_next)); 841fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ >= 0); 842fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ <= tc_sector_szQ); 843fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ >= reqdQ); 844fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sectors[y].tt_n_inuse < N_TTES_PER_SECTOR_USABLE); 845fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sectors[y].tt_n_inuse >= 0); 846fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 847fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Copy into tc. */ 848fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tce = sectors[y].tc_next; 849fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tce >= §ors[y].tc[0]); 850fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tce <= §ors[y].tc[tc_sector_szQ]); 851fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 852fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tce[0] = entry; 853fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj dstP = (UChar*)(&tce[1]); 854fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj srcP = (UChar*)code; 855fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < code_len; i++) 856fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj dstP[i] = srcP[i]; 857fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tc_next += reqdQ; 858fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt_n_inuse++; 859fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 86085665ca6fa29dd64754dabe50eb98f25896e752acerion invalidate_icache( dstP, code_len ); 86185665ca6fa29dd64754dabe50eb98f25896e752acerion 862fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* more paranoia */ 863fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tce2 = sectors[y].tc_next; 864fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tce2 >= §ors[y].tc[0]); 865fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tce2 <= §ors[y].tc[tc_sector_szQ]); 866fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 867fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Find an empty tt slot, and use it. There must be such a slot 868fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj since tt is never allowed to get completely full. */ 869fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj i = HASH_TT(entry); 870fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(i >= 0 && i < N_TTES_PER_SECTOR); 87122854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj while (True) { 872fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[y].tt[i].status == Empty 873fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj || sectors[y].tt[i].status == Deleted) 874fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; 875fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj i++; 876fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (i >= N_TTES_PER_SECTOR) 877fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj i = 0; 87822854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj } 879fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 880fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].status = InUse; 881fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].tce = tce; 882fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].count = 0; 883fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].weight = 1; 884fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].vge = *vge; 885fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].entry = entry; 886fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 8876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Update the fast-cache. */ 888fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj setFastCacheEntry( entry, tce, §ors[y].tt[i].count ); 8896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 8906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Note the eclass numbers for this translation. */ 8916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj upd_eclasses_after_add( §ors[y], i ); 89222854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj} 89322854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 894fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 895fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Search for the translation of the given guest address. If 896fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj requested, a successful search can also cause the fast-caches to be 897fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj updated. 898fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 899fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjBool VG_(search_transtab) ( /*OUT*/AddrH* result, 900fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Addr64 guest_addr, 901fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Bool upd_cache ) 9026c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 903fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int i, j, k, kstart, sno; 904663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 905663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(init_done); 906fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Find the initial probe point just once. It will be the same in 907fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj all sectors and avoids multiple expensive % operations. */ 908fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_full_lookups++; 909fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k = -1; 910fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj kstart = HASH_TT(guest_addr); 911fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(kstart >= 0 && kstart < N_TTES_PER_SECTOR); 912fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 913fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Search in all the sectors. Although the order should not matter, 914fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj it might be most efficient to search in the order youngest to 915fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj oldest. */ 916fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sno = youngest_sector; 917fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_SECTORS; i++) { 918fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 919fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tc == NULL) 920fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj goto notfound; /* sector not in use. */ 921fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 922fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k = kstart; 923fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (j = 0; j < N_TTES_PER_SECTOR; j++) { 924fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_lookup_probes++; 925fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tt[k].status == InUse 926fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj && sectors[sno].tt[k].entry == guest_addr) { 927fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* found it */ 928fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (upd_cache) 929fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj setFastCacheEntry( 930fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj guest_addr, sectors[sno].tt[k].tce, 931fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj §ors[sno].tt[k].count ); 932fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (result) 933fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj *result = sizeof(Addr64) + (AddrH)sectors[sno].tt[k].tce; 934fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 935fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 936fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tt[k].status == Empty) 937fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; /* not found in this sector */ 938fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k++; 939fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (k == N_TTES_PER_SECTOR) 940fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k = 0; 9416c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 942fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 943fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* If we fall off the end, all entries are InUse and not 944fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj matching, or Deleted. In any case we did not find it in this 945fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector. */ 946fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 947fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj notfound: 948fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* move to the next oldest sector */ 949fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sno = sno==0 ? (N_SECTORS-1) : (sno-1); 9506c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 951fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 952fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Not found in any sector. */ 953fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 9546c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 955de4a1d01951937632098a6cda45859afa587a06fsewardj 956de4a1d01951937632098a6cda45859afa587a06fsewardj 9576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 9586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*--- Delete translations. ---*/ 9596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 9606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Stuff for deleting translations which intersect with a given 9626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj address range. Unfortunately, to make this run at a reasonable 9636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj speed, it is complex. */ 964fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 965fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic inline 966a30545069556d3dca4ca3feb7c621bdcb7b34107sewardjBool overlap1 ( Addr64 s1, ULong r1, Addr64 s2, ULong r2 ) 9676c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 968a30545069556d3dca4ca3feb7c621bdcb7b34107sewardj Addr64 e1 = s1 + r1 - 1ULL; 969a30545069556d3dca4ca3feb7c621bdcb7b34107sewardj Addr64 e2 = s2 + r2 - 1ULL; 970fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (e1 < s2 || e2 < s1) 971fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 972fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 9736c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 974de4a1d01951937632098a6cda45859afa587a06fsewardj 975fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic inline 976a30545069556d3dca4ca3feb7c621bdcb7b34107sewardjBool overlaps ( Addr64 start, ULong range, VexGuestExtents* vge ) 9776c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 978fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (overlap1(start, range, vge->base[0], (UInt)vge->len[0])) 979fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 980fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (vge->n_used < 2) 981fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 982fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (overlap1(start, range, vge->base[1], (UInt)vge->len[1])) 983fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 984fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (vge->n_used < 3) 985fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 986fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (overlap1(start, range, vge->base[2], (UInt)vge->len[2])) 987fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 988fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 9896c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 990de4a1d01951937632098a6cda45859afa587a06fsewardj 991de4a1d01951937632098a6cda45859afa587a06fsewardj 9926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Delete a tt entry, and update all the eclass data accordingly. */ 9936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic void delete_tte ( /*MOD*/Sector* sec, Int tteno ) 9956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 9966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, ec_num, ec_idx; 9976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 9986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno >= 0 && tteno < N_TTES_PER_SECTOR); 10006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 10016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->status == InUse); 10026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->n_tte2ec >= 1 && tte->n_tte2ec <= 3); 10036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Deal with the ec-to-tte links first. */ 10056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < tte->n_tte2ec; i++) { 10066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_num = (Int)tte->tte2ec_ec[i]; 10076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_idx = tte->tte2ec_ix[i]; 10086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec_num >= 0 && ec_num < ECLASS_N); 10096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec_idx >= 0); 10106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec_idx < sec->ec2tte_used[ec_num]); 10116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Assert that the two links point at each other. */ 10126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[ec_num][ec_idx] == (UShort)tteno); 10136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* "delete" the pointer back to here. */ 10146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[ec_num][ec_idx] = EC2TTE_DELETED; 10156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Now fix up this TTEntry. */ 10186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->status = Deleted; 10196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->n_tte2ec = 0; 10206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Stats .. */ 10226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt_n_inuse--; 10236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_disc_count++; 10246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_disc_osize += vge_osize(&tte->vge); 10256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Tell the tool too. */ 10276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (VG_(needs).basic_block_discards) { 10286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_TDICT_CALL( tool_discard_basic_block_info, 10294ba057cce1d81a949f5a899b5abb99e90a731bccsewardj tte->entry, 10306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->vge ); 10316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 10336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Delete translations from sec which intersect specified range, but 10366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj only consider translations in the specified eclass. */ 10376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 10396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjBool delete_translations_in_sector_eclass ( /*MOD*/Sector* sec, 10406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Addr64 guest_start, ULong range, 10416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int ec ) 10426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 10436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 10446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort tteno; 10456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool anyDeld = False; 10466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 10476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec >= 0 && ec < ECLASS_N); 10496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < sec->ec2tte_used[ec]; i++) { 10516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tteno = sec->ec2tte[ec][i]; 10536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tteno == EC2TTE_DELETED) { 10546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* already deleted */ 10556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 10566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno < N_TTES_PER_SECTOR); 10596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 10616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->status == InUse); 10626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (overlaps( guest_start, range, &tte->vge )) { 10646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeld = True; 10656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj delete_tte( sec, (Int)tteno ); 10666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return anyDeld; 10716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 10726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Delete translations from sec which intersect specified range, the 10756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj slow way, by inspecting all translations in sec. */ 10766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 10786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjBool delete_translations_in_sector ( /*MOD*/Sector* sec, 10796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Addr64 guest_start, ULong range ) 10806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 10816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 10826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool anyDeld = False; 10836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 10856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tt[i].status == InUse 10866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj && overlaps( guest_start, range, &sec->tt[i].vge )) { 10876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeld = True; 10886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj delete_tte( sec, i ); 10896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return anyDeld; 10936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 10946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 109645f4e7c91119c7d01a59f5e827c67841632c9314sewardjvoid VG_(discard_translations) ( Addr64 guest_start, ULong range, 109745f4e7c91119c7d01a59f5e827c67841632c9314sewardj HChar* who ) 10986c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 10996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Sector* sec; 11006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int sno, ec; 11016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool anyDeleted = False; 11026c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 1103663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(init_done); 1104663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 1105a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj VG_(debugLog)(2, "transtab", 110645f4e7c91119c7d01a59f5e827c67841632c9314sewardj "discard_translations(0x%llx, %lld) req by %s\n", 110745f4e7c91119c7d01a59f5e827c67841632c9314sewardj guest_start, range, who ); 110845f4e7c91119c7d01a59f5e827c67841632c9314sewardj 11096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Pre-deletion sanity check */ 11106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (VG_(clo_sanity_level >= 4)) { 11116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool sane = sanity_check_all_sectors(); 11126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sane); 11136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (range == 0) 11166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return; 11176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* There are two different ways to do this. 11196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj If the range fits within a single address-range equivalence 11216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj class, as will be the case for a cache line sized invalidation, 11226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj then we only have to inspect the set of translations listed in 11236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj that equivalence class, and also in the "sin-bin" equivalence 11246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj class ECLASS_MISC. 11256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Otherwise, the invalidation is of a larger range and probably 11276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj results from munmap. In this case it's (probably!) faster just 11286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj to inspect all translations, dump those we don't want, and 11296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj regenerate the equivalence class information (since modifying it 11306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj in-situ is even more expensive). 11316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj */ 11326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* First off, figure out if the range falls within a single class, 11346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj and if so which one. */ 11356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec = ECLASS_MISC; 11376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (range < (1ULL << ECLASS_SHIFT)) 11386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec = range_to_eclass( guest_start, (UInt)range ); 11396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* if ec is ECLASS_MISC then we aren't looking at just a single 11416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj class, so use the slow scheme. Else use the fast scheme, 11426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj examining 'ec' and ECLASS_MISC. */ 11436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec != ECLASS_MISC) { 11456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(debugLog)(2, "transtab", 11476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj " FAST, ec = %d\n", ec); 11486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Fast scheme */ 11506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec >= 0 && ec < ECLASS_MISC); 11516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 11536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 11546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 11556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 11566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeleted |= delete_translations_in_sector_eclass( 11576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec, guest_start, range, ec ); 11586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeleted |= delete_translations_in_sector_eclass( 11596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec, guest_start, range, ECLASS_MISC ); 11606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 11636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* slow scheme */ 11656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(debugLog)(2, "transtab", 11676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj " SLOW, ec = %d\n", ec); 11686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 11706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 11716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 11726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 11736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeleted |= delete_translations_in_sector( 11746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec, guest_start, range ); 11756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1177de4a1d01951937632098a6cda45859afa587a06fsewardj } 1178de4a1d01951937632098a6cda45859afa587a06fsewardj 1179fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (anyDeleted) 1180fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidateFastCache(); 11816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Post-deletion sanity check */ 11836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (VG_(clo_sanity_level >= 4)) { 11846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 11856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 11866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool sane = sanity_check_all_sectors(); 11876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sane); 11886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* But now, also check the requested address range isn't 11896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj present anywhere. */ 11906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 11916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 11926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 11936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 11946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 11956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[i]; 11966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status != InUse) 11976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 11986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(!overlaps( guest_start, range, &tte->vge )); 11996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 12006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 12016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 1202fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj} 12036c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 12046c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 1205fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 1206fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*--- Initialisation. ---*/ 1207fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 1208fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1209fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjvoid VG_(init_tt_tc) ( void ) 12106c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 12116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, j, avg_codeszQ; 1212de4a1d01951937632098a6cda45859afa587a06fsewardj 1213663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(!init_done); 1214663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj init_done = True; 1215663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 1216fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Otherwise lots of things go wrong... */ 1217fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sizeof(ULong) == 8); 1218fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sizeof(Addr64) == 8); 1219de4a1d01951937632098a6cda45859afa587a06fsewardj 1220fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) 1221fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 1222fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj "TT/TC: VG_(init_tt_tc) " 1223fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj "(startup of code management)"); 1224fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1225fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Figure out how big each tc area should be. */ 122643b9a8abb139b86a24457fa3c19b9cb60ca17c3anjn avg_codeszQ = (VG_(details).avg_translation_sizeB + 7) / 8; 122743b9a8abb139b86a24457fa3c19b9cb60ca17c3anjn tc_sector_szQ = N_TTES_PER_SECTOR_USABLE * (1 + avg_codeszQ); 1228fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1229fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Ensure the calculated value is not way crazy. */ 1230fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tc_sector_szQ >= 2 * N_TTES_PER_SECTOR_USABLE); 1231fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tc_sector_szQ <= 50 * N_TTES_PER_SECTOR_USABLE); 1232fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1233fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Initialise the sectors */ 1234fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest_sector = 0; 1235fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_SECTORS; i++) { 1236fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tc = NULL; 1237fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tt = NULL; 1238fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tc_next = NULL; 1239fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tt_n_inuse = 0; 12406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < ECLASS_N; j++) { 12416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sectors[i].ec2tte_size[j] = 0; 12426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sectors[i].ec2tte_used[j] = 0; 12436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sectors[i].ec2tte[j] = NULL; 12446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 12456c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 12464ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 1247fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* and the fast caches. */ 1248fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidateFastCache(); 1249fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1250fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) { 1251fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 1252fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj "TT/TC: cache: %d sectors of %d bytes each = %d total", 1253fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS, 8 * tc_sector_szQ, 1254fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS * 8 * tc_sector_szQ ); 1255fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 1256fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj "TT/TC: table: %d total entries, max occupancy %d (%d%%)", 1257fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS * N_TTES_PER_SECTOR, 1258fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS * N_TTES_PER_SECTOR_USABLE, 1259fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj SECTOR_TT_LIMIT_PERCENT ); 1260fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 126145f4e7c91119c7d01a59f5e827c67841632c9314sewardj 126245f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(2, "transtab", 126345f4e7c91119c7d01a59f5e827c67841632c9314sewardj "cache: %d sectors of %d bytes each = %d total\n", 126445f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS, 8 * tc_sector_szQ, 126545f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS * 8 * tc_sector_szQ ); 126645f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(2, "transtab", 126745f4e7c91119c7d01a59f5e827c67841632c9314sewardj "table: %d total entries, max occupancy %d (%d%%)\n", 126845f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS * N_TTES_PER_SECTOR, 126945f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS * N_TTES_PER_SECTOR_USABLE, 127045f4e7c91119c7d01a59f5e827c67841632c9314sewardj SECTOR_TT_LIMIT_PERCENT ); 1271de4a1d01951937632098a6cda45859afa587a06fsewardj} 1272de4a1d01951937632098a6cda45859afa587a06fsewardj 12734ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 1274fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 1275fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*--- Printing out statistics. ---*/ 1276fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 1277fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1278fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic ULong safe_idiv( ULong a, ULong b ) 127992e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote{ 128092e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote return (b == 0 ? 0 : a / b); 128192e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote} 128292e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote 1283fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjUInt VG_(get_bbs_translated) ( void ) 1284fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj{ 1285fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return n_in_count; 1286fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj} 1287fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1288fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjvoid VG_(print_tt_tc_stats) ( void ) 128992e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote{ 129092e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 12910fd92f4126a029b2c73fd217b337121c38070066njn " tt/tc: %,llu tt lookups requiring %,llu probes", 1292fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_full_lookups, n_lookup_probes ); 129392e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 12940fd92f4126a029b2c73fd217b337121c38070066njn " tt/tc: %,llu fast-cache updates, %,llu flushes", 1295fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_fast_updates, n_fast_flushes ); 1296fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 129792e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 12985096a39f831d8f7d9dbdfb43e0de0d8b13d4d950njn " transtab: new %,lld " 12990fd92f4126a029b2c73fd217b337121c38070066njn "(%,llu -> %,llu; ratio %,llu:10) [%,llu scs]", 1300fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_count, n_in_osize, n_in_tsize, 130126412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj safe_idiv(10*n_in_tsize, n_in_osize), 130226412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj n_in_sc_count); 130392e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 13045096a39f831d8f7d9dbdfb43e0de0d8b13d4d950njn " transtab: dumped %,llu (%,llu -> ?" "?)", 1305fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_dump_count, n_dump_osize ); 1306fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 13075096a39f831d8f7d9dbdfb43e0de0d8b13d4d950njn " transtab: discarded %,llu (%,llu -> ?" "?)", 1308fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_disc_count, n_disc_osize ); 13096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 13106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (0) { 13116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 13126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("\n"); 13136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 13146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)(" %4d", sectors[0].ec2tte_used[i]); 13156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (i % 16 == 15) 13166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("\n"); 13176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 13186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("\n\n"); 13196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 132092e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote} 1321de4a1d01951937632098a6cda45859afa587a06fsewardj 1322fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 1323fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*--- Printing out of profiling results. ---*/ 1324fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 13254ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 1326fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic ULong score ( TTEntry* tte ) 1327fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj{ 1328fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return ((ULong)tte->weight) * ((ULong)tte->count); 1329de4a1d01951937632098a6cda45859afa587a06fsewardj} 1330de4a1d01951937632098a6cda45859afa587a06fsewardj 13312025cf98a3210c175a90fc77cb599cca1643bd68njnULong VG_(get_BB_profile) ( BBProfEntry tops[], UInt n_tops ) 1332de4a1d01951937632098a6cda45859afa587a06fsewardj{ 1333fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int sno, i, r, s; 13342025cf98a3210c175a90fc77cb599cca1643bd68njn ULong score_total; 1335fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1336fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* First, compute the total weighted count, and find the top N 13372025cf98a3210c175a90fc77cb599cca1643bd68njn ttes. tops contains pointers to the most-used n_tops blocks, in 1338fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj descending order (viz, tops[0] is the highest scorer). */ 13392025cf98a3210c175a90fc77cb599cca1643bd68njn for (i = 0; i < n_tops; i++) { 13402025cf98a3210c175a90fc77cb599cca1643bd68njn tops[i].addr = 0; 13412025cf98a3210c175a90fc77cb599cca1643bd68njn tops[i].score = 0; 13422025cf98a3210c175a90fc77cb599cca1643bd68njn } 1343fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1344fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj score_total = 0; 1345fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1346fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (sno = 0; sno < N_SECTORS; sno++) { 1347fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tc == NULL) 134818d7513cc08bf982711c8a22b70d56af6aa87b33sewardj continue; 1349fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 1350fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tt[i].status != InUse) 1351fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj continue; 1352fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj score_total += score(§ors[sno].tt[i]); 1353fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Find the rank for sectors[sno].tt[i]. */ 13542025cf98a3210c175a90fc77cb599cca1643bd68njn r = n_tops-1; 1355fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj while (True) { 1356fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (r == -1) 1357fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; 13582025cf98a3210c175a90fc77cb599cca1643bd68njn if (tops[r].addr == 0) { 1359fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj r--; 1360fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj continue; 1361fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 13622025cf98a3210c175a90fc77cb599cca1643bd68njn if ( score(§ors[sno].tt[i]) > tops[r].score ) { 1363fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj r--; 1364fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj continue; 1365fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 1366fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; 1367fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 1368fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj r++; 13692025cf98a3210c175a90fc77cb599cca1643bd68njn vg_assert(r >= 0 && r <= n_tops); 1370fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This bb should be placed at r, and bbs above it shifted 1371fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj upwards one slot. */ 13722025cf98a3210c175a90fc77cb599cca1643bd68njn if (r < n_tops) { 13732025cf98a3210c175a90fc77cb599cca1643bd68njn for (s = n_tops-1; s > r; s--) 1374fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tops[s] = tops[s-1]; 13752025cf98a3210c175a90fc77cb599cca1643bd68njn tops[r].addr = sectors[sno].tt[i].entry; 13762025cf98a3210c175a90fc77cb599cca1643bd68njn tops[r].score = score( §ors[sno].tt[i] ); 1377fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 1378de4a1d01951937632098a6cda45859afa587a06fsewardj } 1379de4a1d01951937632098a6cda45859afa587a06fsewardj } 1380de4a1d01951937632098a6cda45859afa587a06fsewardj 13812025cf98a3210c175a90fc77cb599cca1643bd68njn return score_total; 1382c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj} 1383c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj 1384de4a1d01951937632098a6cda45859afa587a06fsewardj/*--------------------------------------------------------------------*/ 13858bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn/*--- end ---*/ 1386de4a1d01951937632098a6cda45859afa587a06fsewardj/*--------------------------------------------------------------------*/ 1387