m_transtab.c revision 1636d33c13958b9c0e7d3059cdd5005746418eb2
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 1103f8d3fc25f5a45c5826259d1b33b7f310117279sewardj Copyright (C) 2000-2012 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" 34291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#include "pub_core_machine.h" // For VG_(machine_get_VexArchInfo) 3597405b2d134b52880d6dbec3eb2929e2002c2542njn#include "pub_core_libcbase.h" 36291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#include "pub_core_vki.h" // to keep pub_core_libproc.h happy, sigh 37291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#include "pub_core_libcproc.h" // VG_(invalidate_icache) 38132bfccd21960e462352175f8553a5bdce8a210cnjn#include "pub_core_libcassert.h" 3936a20fa5f779a0a6fb7b4a90dcaa6376481f1faanjn#include "pub_core_libcprint.h" 402024234c590f408994b373abfb00bc2cd2a90c48njn#include "pub_core_options.h" 4110f08cf5b84882eebbb6712a7be890577650e8adsewardj#include "pub_core_tooliface.h" // For VG_(details).avg_translation_sizeB 428bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn#include "pub_core_transtab.h" 4345f4e7c91119c7d01a59f5e827c67841632c9314sewardj#include "pub_core_aspacemgr.h" 4445f4e7c91119c7d01a59f5e827c67841632c9314sewardj#include "pub_core_mallocfree.h" // VG_(out_of_memory_NORETURN) 45291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#include "pub_core_xarray.h" 46291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#include "pub_core_dispatch.h" // For VG_(disp_cp*) addresses 4759570ffbe31930ab4d678754daaeec0715117a3dsewardj 4859570ffbe31930ab4d678754daaeec0715117a3dsewardj 4918d7513cc08bf982711c8a22b70d56af6aa87b33sewardj/* #define DEBUG_TRANSTAB */ 5018d7513cc08bf982711c8a22b70d56af6aa87b33sewardj 51de4a1d01951937632098a6cda45859afa587a06fsewardj 526c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*-------------------------------------------------------------*/ 536c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*--- Management of the FIFO-based translation table+cache. ---*/ 546c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*-------------------------------------------------------------*/ 55de4a1d01951937632098a6cda45859afa587a06fsewardj 566c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*------------------ CONSTANTS ------------------*/ 57de4a1d01951937632098a6cda45859afa587a06fsewardj 58fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of sectors the TC is divided into. If you need a larger 59fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj overall translation cache, increase this value. */ 60fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj#define N_SECTORS 8 61de4a1d01951937632098a6cda45859afa587a06fsewardj 62fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of TC entries in each sector. This needs to be a prime 636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj number to work properly, it must be <= 65535 (so that a TT index 646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj fits in a UShort, leaving room for 0xFFFF(EC2TTE_DELETED) to denote 656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 'deleted') and it is strongly recommended not to change this. 666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 65521 is the largest prime <= 65535. */ 67e25053c5aaefc6a4039dcd557adf24d8bb23db69sewardj#define N_TTES_PER_SECTOR /*10007*/ /*30011*/ /*40009*/ 65521 68de4a1d01951937632098a6cda45859afa587a06fsewardj 69fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Because each sector contains a hash table of TTEntries, we need to 70fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj specify the maximum allowable loading, after which the sector is 71fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj deemed full. */ 725d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj#define SECTOR_TT_LIMIT_PERCENT 65 73de4a1d01951937632098a6cda45859afa587a06fsewardj 74fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* The sector is deemed full when this many entries are in it. */ 75fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj#define N_TTES_PER_SECTOR_USABLE \ 76fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ((N_TTES_PER_SECTOR * SECTOR_TT_LIMIT_PERCENT) / 100) 776c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Equivalence classes for fast address range deletion. There are 1 + 796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 2^ECLASS_WIDTH bins. The highest one, ECLASS_MISC, describes an 806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj address range which does not fall cleanly within any specific bin. 816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Note that ECLASS_SHIFT + ECLASS_WIDTH must be < 32. */ 826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_SHIFT 11 836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_WIDTH 8 846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_MISC (1 << ECLASS_WIDTH) 856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define ECLASS_N (1 + ECLASS_MISC) 866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj#define EC2TTE_DELETED 0xFFFF /* 16-bit special value */ 886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 89de4a1d01951937632098a6cda45859afa587a06fsewardj 906c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*------------------ TYPES ------------------*/ 91de4a1d01951937632098a6cda45859afa587a06fsewardj 92291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* In edges ("to-me") in the graph created by chaining. */ 93291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjtypedef 94291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj struct { 95291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt from_sNo; /* sector number */ 96291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt from_tteNo; /* TTE number in given sector */ 97291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt from_offs; /* code offset from TCEntry::tcptr where the patch is */ 98291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Bool to_fastEP; /* Is the patch to a fast or slow entry point? */ 99291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 100291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge; 101291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 102291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 103291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* Out edges ("from-me") in the graph created by chaining. */ 104291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjtypedef 105291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj struct { 106291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt to_sNo; /* sector number */ 107291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt to_tteNo; /* TTE number in given sector */ 108291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt from_offs; /* code offset in owning translation where patch is */ 109291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 110291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdge; 111291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 112291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 113291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#define N_FIXED_IN_EDGE_ARR 3 114291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjtypedef 115291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj struct { 116291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt n_fixed; /* 0 .. N_FIXED_IN_EDGE_ARR */ 117291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge fixed[N_FIXED_IN_EDGE_ARR]; 118291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray* var; /* XArray* of InEdgeArr */ 119291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 120291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdgeArr; 121291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 122291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj#define N_FIXED_OUT_EDGE_ARR 2 123291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjtypedef 124291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj struct { 125291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt n_fixed; /* 0 .. N_FIXED_OUT_EDGE_ARR */ 126291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdge fixed[N_FIXED_OUT_EDGE_ARR]; 127291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray* var; /* XArray* of OutEdgeArr */ 128291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 129291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdgeArr; 130291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 131291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 132fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* A translation-table entry. This indicates precisely which areas of 133fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj guest code are included in the translation, and contains all other 134fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj auxiliary info too. */ 1356c3769f487145a08c01b58d6e5db3ba274062ad4sewardjtypedef 1366c3769f487145a08c01b58d6e5db3ba274062ad4sewardj struct { 137fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Profiling only: the count and weight (arbitrary meaning) for 138fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj this translation. Weight is a property of the translation 139fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj itself and computed once when the translation is created. 140fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Count is an entry count for the translation and is 141fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj incremented by 1 every time the translation is used, if we 142fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj are profiling. */ 143291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ULong count; 144fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UShort weight; 145fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 146fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Status of the slot. Note, we need to be able to do lazy 147fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj deletion, hence the Deleted state. */ 148fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj enum { InUse, Deleted, Empty } status; 149fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1505f76de086a6d643db51e50a4e623df7dfc9b6161sewardj /* 64-bit aligned pointer to one or more 64-bit words containing 1515f76de086a6d643db51e50a4e623df7dfc9b6161sewardj the corresponding host code (must be in the same sector!) 1525f76de086a6d643db51e50a4e623df7dfc9b6161sewardj This is a pointer into the sector's tc (code) area. */ 1535f76de086a6d643db51e50a4e623df7dfc9b6161sewardj ULong* tcptr; 154fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 155fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This is the original guest address that purportedly is the 156fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj entry point of the translation. You might think that .entry 157fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj should be the same as .vge->base[0], and most of the time it 158fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj is. However, when doing redirections, that is not the case. 159fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj .vge must always correctly describe the guest code sections 160fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj from which this translation was made. However, .entry may or 161fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj may not be a lie, depending on whether or not we're doing 162fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj redirection. */ 163fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Addr64 entry; 164fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 165fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This structure describes precisely what ranges of guest code 166fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj the translation covers, so we can decide whether or not to 167fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj delete it when translations of a given address range are 168fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidated. */ 169fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VexGuestExtents vge; 1706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Address range summary info: these are pointers back to 1726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclass[] entries in the containing Sector. Those entries in 1736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj turn point back here -- the two structures are mutually 1746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj redundant but both necessary to make fast deletions work. 1756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj The eclass info is similar to, and derived from, this entry's 1766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 'vge' field, but it is not the same */ 1776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort n_tte2ec; // # tte2ec pointers (1 to 3) 1786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort tte2ec_ec[3]; // for each, the eclass # 1796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt tte2ec_ix[3]; // and the index within the eclass. 1806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // for i in 0 .. n_tte2ec-1 1816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // sec->ec2tte[ tte2ec_ec[i] ][ tte2ec_ix[i] ] 1826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // should be the index 1836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj // of this TTEntry in the containing Sector's tt array. 184291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 185291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Admin information for chaining. 'in_edges' is a set of the 186291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj patch points which jump to this translation -- hence are 187291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj predecessors in the control flow graph. 'out_edges' points 188291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj to successors in the control flow graph -- translations to 189291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj which this one has a patched jump. In short these are just 190291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj backwards and forwards edges in the graph of patched-together 191291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj blocks. The 'in_edges' contain slightly more info, enough 192291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj that we can undo the chaining of each mentioned patch point. 193291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj The 'out_edges' list exists only so that we can visit the 194291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 'in_edges' entries of all blocks we're patched through to, in 195291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj order to remove ourselves from then when we're deleted. */ 196291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 197291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* A translation can disappear for two reasons: 198291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 1. erased (as part of the oldest sector cleanup) when the 199291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj youngest sector is full. 200291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 2. discarded due to calls to VG_(discard_translations). 201291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(discard_translations) sets the status of the 202291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj translation to 'Deleted'. 203291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj A.o., the gdbserver discards one or more translations 204291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj when a breakpoint is inserted or removed at an Addr, 205291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj or when single stepping mode is enabled/disabled 206291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj or when a translation is instrumented for gdbserver 207291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (all the target jumps of this translation are 208291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj invalidated). 209291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 210291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj So, it is possible that the translation A to be patched 211291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (to obtain a patched jump from A to B) is invalidated 212291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj after B is translated and before A is patched. 213291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj In case a translation is erased or discarded, the patching 214291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj cannot be done. VG_(tt_tc_do_chaining) and find_TTEntry_from_hcode 215291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj are checking the 'from' translation still exists before 216291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj doing the patching. 217291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 218291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Is it safe to erase or discard the current translation E being 219291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj executed ? Amazing, but yes, it is safe. 220291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Here is the explanation: 221291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 222291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj The translation E being executed can only be erased if a new 223291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj translation N is being done. A new translation is done only 224291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if the host addr is a not yet patched jump to another 225291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj translation. In such a case, the guest address of N is 226291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj assigned to the PC in the VEX state. Control is returned 227291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj to the scheduler. N will be translated. This can erase the 228291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj translation E (in case of sector full). VG_(tt_tc_do_chaining) 229291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj will not do the chaining to a non found translation E. 230291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj The execution will continue at the current guest PC 231291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (i.e. the translation N). 232291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj => it is safe to erase the current translation being executed. 233291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 234291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj The current translation E being executed can also be discarded 235291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (e.g. by gdbserver). VG_(discard_translations) will mark 236291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj this translation E as Deleted, but the translation itself 237291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj is not erased. In particular, its host code can only 238291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj be overwritten or erased in case a new translation is done. 239291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj A new translation will only be done if a not yet translated 240291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj jump is to be executed. The execution of the Deleted translation 241291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj E will continue till a non patched jump is encountered. 242291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj This situation is then similar to the 'erasing' case above : 243291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj the current translation E can be erased or overwritten, as the 244291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj execution will continue at the new translation N. 245291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 246291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj */ 247291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 248291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* It is possible, although very unlikely, that a block A has 249291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj more than one patched jump to block B. This could happen if 250291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (eg) A finishes "jcond B; jmp B". 251291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 252291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj This means in turn that B's in_edges set can list A more than 253291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj once (twice in this example). However, each such entry must 254291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj have a different from_offs, since a patched jump can only 255291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj jump to one place at once (it's meaningless for it to have 256291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj multiple destinations.) IOW, the successor and predecessor 257291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj edges in the graph are not uniquely determined by a 258291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry --> TTEntry pair, but rather by a 259291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (TTEntry,offset) --> TTEntry triple. 260291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 261291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj If A has multiple edges to B then B will mention A multiple 262291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj times in its in_edges. To make things simpler, we then 263291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj require that A mentions B exactly the same number of times in 264291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj its out_edges. Furthermore, a matching out-in pair must have 265291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj the same offset (from_offs). This facilitates sanity 266291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj checking, and it facilitates establishing the invariant that 267291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj a out_edges set may not have duplicates when using the 268291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj equality defined by (TTEntry,offset). Hence the out_edges 269291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj and in_edges sets really do have both have set semantics. 270291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 271291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj eg if A has been patched to B at offsets 42 and 87 (in A) 272291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj then A.out_edges = { (B,42), (B,87) } (in any order) 273291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj and B.in_edges = { (A,42), (A,87) } (in any order) 274291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 275291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Hence for each node pair P->Q in the graph, there's a 1:1 276291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj mapping between P.out_edges and Q.in_edges. 277291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj */ 278291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdgeArr in_edges; 279291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdgeArr out_edges; 2806c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 2816c3769f487145a08c01b58d6e5db3ba274062ad4sewardj TTEntry; 2826c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 2834ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 284291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* A structure used for mapping host code addresses back to the 285291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj relevant TTEntry. Used when doing chaining, for finding the 286291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry to which some arbitrary patch address belongs. */ 287291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjtypedef 288291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj struct { 289291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UChar* start; 290291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt len; 291291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt tteNo; 292291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 293291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HostExtent; 294291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 295fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Finally, a sector itself. Each sector contains an array of 296fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj TCEntries, which hold code, and an array of TTEntries, containing 297fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj all required administrative info. Profiling is supported using the 298291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry .count and .weight fields, if required. 2994ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 300fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj If the sector is not in use, all three pointers are NULL and 301fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tt_n_inuse is zero. 302fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 303fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjtypedef 304fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj struct { 305fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* The TCEntry area. Size of this depends on the average 306fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj translation size. We try and size it so it becomes full 307fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj precisely when this sector's translation table (tt) reaches 308fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj its load limit (SECTOR_TT_LIMIT_PERCENT). */ 309fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong* tc; 3104ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 311fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* The TTEntry array. This is a fixed size, always containing 312fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj exactly N_TTES_PER_SECTOR entries. */ 313fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj TTEntry* tt; 3146c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 315fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This points to the current allocation point in tc. */ 316fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj ULong* tc_next; 317de4a1d01951937632098a6cda45859afa587a06fsewardj 318fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* The count of tt entries with state InUse. */ 319fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int tt_n_inuse; 3206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 3216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Expandable arrays of tt indices for each of the ECLASS_N 3226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj address range equivalence classes. These hold indices into 3236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj the containing sector's tt array, which in turn should point 3246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj back here. */ 3256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int ec2tte_size[ECLASS_N]; 3266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int ec2tte_used[ECLASS_N]; 3276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort* ec2tte[ECLASS_N]; 328291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 329291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* The host extents. The [start, +len) ranges are constructed 330291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj in strictly non-overlapping order, so we can binary search 331291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj them at any time. */ 332291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray* host_extents; /* XArray* of HostExtent */ 333fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 334fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Sector; 335de4a1d01951937632098a6cda45859afa587a06fsewardj 336de4a1d01951937632098a6cda45859afa587a06fsewardj 3376c3769f487145a08c01b58d6e5db3ba274062ad4sewardj/*------------------ DECLS ------------------*/ 3386c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 339fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* The root data structure is an array of sectors. The index of the 340fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest sector is recorded, and new translations are put into that 341fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector. When it fills up, we move along to the next sector and 342fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj start to fill that up, wrapping around at the end of the array. 343fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj That way, once all N_TC_SECTORS have been bought into use for the 344fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj first time, and are full, we then re-use the oldest sector, 345fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj endlessly. 346fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 347fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj When running, youngest sector should be between >= 0 and < 348fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_TC_SECTORS. The initial -1 value indicates the TT/TC system is 349fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj not yet initialised. 350fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 351fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Sector sectors[N_SECTORS]; 352fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Int youngest_sector = -1; 3536c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 354fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* The number of ULongs in each TCEntry area. This is computed once 355fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj at startup and does not change. */ 356fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Int tc_sector_szQ; 3576c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 3586c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 3595d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj/* A list of sector numbers, in the order which they should be 3605d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj searched to find translations. This is an optimisation to be used 3615d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj when searching for translations and should not affect 3625d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj correctness. -1 denotes "no entry". */ 3635d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardjstatic Int sector_search_order[N_SECTORS]; 3645d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 3655d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 3665f76de086a6d643db51e50a4e623df7dfc9b6161sewardj/* Fast helper for the TC. A direct-mapped cache which holds a set of 3675f76de086a6d643db51e50a4e623df7dfc9b6161sewardj recently used (guest address, host address) pairs. This array is 3685f76de086a6d643db51e50a4e623df7dfc9b6161sewardj referred to directly from m_dispatch/dispatch-<platform>.S. 3696c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 3705f76de086a6d643db51e50a4e623df7dfc9b6161sewardj Entries in tt_fast may refer to any valid TC entry, regardless of 371fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj which sector it's in. Consequently we must be very careful to 372fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidate this cache when TC entries are changed or disappear. 373c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj 3745f76de086a6d643db51e50a4e623df7dfc9b6161sewardj A special .guest address - TRANSTAB_BOGUS_GUEST_ADDR -- must be 3755f76de086a6d643db51e50a4e623df7dfc9b6161sewardj pointed at to cause that cache entry to miss. This relies on the 3765f76de086a6d643db51e50a4e623df7dfc9b6161sewardj assumption that no guest code actually has that address, hence a 3775f76de086a6d643db51e50a4e623df7dfc9b6161sewardj value 0x1 seems good. m_translate gives the client a synthetic 3785f76de086a6d643db51e50a4e623df7dfc9b6161sewardj segfault if it tries to execute at this address. 3795f76de086a6d643db51e50a4e623df7dfc9b6161sewardj*/ 3805f76de086a6d643db51e50a4e623df7dfc9b6161sewardj/* 3815f76de086a6d643db51e50a4e623df7dfc9b6161sewardjtypedef 3825f76de086a6d643db51e50a4e623df7dfc9b6161sewardj struct { 3835f76de086a6d643db51e50a4e623df7dfc9b6161sewardj Addr guest; 3845f76de086a6d643db51e50a4e623df7dfc9b6161sewardj Addr host; 3855f76de086a6d643db51e50a4e623df7dfc9b6161sewardj } 3865f76de086a6d643db51e50a4e623df7dfc9b6161sewardj FastCacheEntry; 3875f76de086a6d643db51e50a4e623df7dfc9b6161sewardj*/ 3885f76de086a6d643db51e50a4e623df7dfc9b6161sewardj/*global*/ __attribute__((aligned(16))) 3895f76de086a6d643db51e50a4e623df7dfc9b6161sewardj FastCacheEntry VG_(tt_fast)[VG_TT_FAST_SIZE]; 390de4a1d01951937632098a6cda45859afa587a06fsewardj 391663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj/* Make sure we're not used before initialisation. */ 392663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardjstatic Bool init_done = False; 393663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 394663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 395fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------ STATS DECLS ------------------*/ 396de4a1d01951937632098a6cda45859afa587a06fsewardj 397fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of fast-cache updates and flushes done. */ 398291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_fast_flushes = 0; 399291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_fast_updates = 0; 40022854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 401fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number of full lookups done. */ 402291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_full_lookups = 0; 403291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_lookup_probes = 0; 40422854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 40526412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj/* Number/osize/tsize of translations entered; also the number of 40626412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj those for which self-checking was requested. */ 407291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_in_count = 0; 408291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_in_osize = 0; 409291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_in_tsize = 0; 410291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_in_sc_count = 0; 411de4a1d01951937632098a6cda45859afa587a06fsewardj 412fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number/osize of translations discarded due to lack of space. */ 413291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_dump_count = 0; 414291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_dump_osize = 0; 415fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 416fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Number/osize of translations discarded due to requests to do so. */ 417291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_disc_count = 0; 418291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic ULong n_disc_osize = 0; 419291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 420291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 421291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/*-------------------------------------------------------------*/ 422291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/*--- Misc ---*/ 423291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/*-------------------------------------------------------------*/ 424291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 42554fe2021b87b9e5edb8ec8070f47b86d5cafb8aaflorianstatic void* ttaux_malloc ( const HChar* tag, SizeT n ) 426291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 427291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return VG_(arena_malloc)(VG_AR_TTAUX, tag, n); 428291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 429291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 430291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void ttaux_free ( void* p ) 431291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 432291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(arena_free)(VG_AR_TTAUX, p); 433291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 434291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 435291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 436291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/*-------------------------------------------------------------*/ 437291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/*--- Chaining support ---*/ 438291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/*-------------------------------------------------------------*/ 439291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 440291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic inline TTEntry* index_tte ( UInt sNo, UInt tteNo ) 441291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 442291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(sNo < N_SECTORS); 443291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(tteNo < N_TTES_PER_SECTOR); 444291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Sector* s = §ors[sNo]; 445291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(s->tt); 446291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* tte = &s->tt[tteNo]; 447291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(tte->status == InUse); 448291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return tte; 449291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 450291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 451291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void InEdge__init ( InEdge* ie ) 452291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 453291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie->from_sNo = -1; /* invalid */ 454291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie->from_tteNo = 0; 455291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie->from_offs = 0; 456291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie->to_fastEP = False; 457291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 458291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 459291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void OutEdge__init ( OutEdge* oe ) 460291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 461291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oe->to_sNo = -1; /* invalid */ 462291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oe->to_tteNo = 0; 463291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oe->from_offs = 0; 464291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 465291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 466291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void TTEntry__init ( TTEntry* tte ) 467291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 468291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(memset)(tte, 0, sizeof(*tte)); 469291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 470291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 471291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic UWord InEdgeArr__size ( InEdgeArr* iea ) 472291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 473291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (iea->var) { 474291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed == 0); 475291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return VG_(sizeXA)(iea->var); 476291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 477291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed <= N_FIXED_IN_EDGE_ARR); 478291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return iea->n_fixed; 479291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 480291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 481291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 482291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void InEdgeArr__makeEmpty ( InEdgeArr* iea ) 483291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 484291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (iea->var) { 485291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed == 0); 486291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(deleteXA)(iea->var); 487291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->var = NULL; 488291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 489291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed <= N_FIXED_IN_EDGE_ARR); 490291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->n_fixed = 0; 491291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 492291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 493291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 494291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 495291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjInEdge* InEdgeArr__index ( InEdgeArr* iea, UWord i ) 496291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 497291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (iea->var) { 498291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed == 0); 499291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return (InEdge*)VG_(indexXA)(iea->var, i); 500291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 501291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(i < iea->n_fixed); 502291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return &iea->fixed[i]; 503291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 504291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 505291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 506291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 507291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjvoid InEdgeArr__deleteIndex ( InEdgeArr* iea, UWord i ) 508291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 509291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (iea->var) { 510291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed == 0); 511291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(removeIndexXA)(iea->var, i); 512291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 513291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(i < iea->n_fixed); 514291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (; i+1 < iea->n_fixed; i++) { 515291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->fixed[i] = iea->fixed[i+1]; 516291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 517291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->n_fixed--; 518291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 519291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 520291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 521291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 522291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjvoid InEdgeArr__add ( InEdgeArr* iea, InEdge* ie ) 523291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 524291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (iea->var) { 525291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed == 0); 526291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(iea->var, ie); 527291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 528291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(iea->n_fixed <= N_FIXED_IN_EDGE_ARR); 529291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (iea->n_fixed == N_FIXED_IN_EDGE_ARR) { 530291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* The fixed array is full, so we have to initialise an 531291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray and copy the fixed array into it. */ 532291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->var = VG_(newXA)(ttaux_malloc, "transtab.IEA__add", 533291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ttaux_free, 534291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sizeof(InEdge)); 535291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UWord i; 536291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (i = 0; i < iea->n_fixed; i++) { 537291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(iea->var, &iea->fixed[i]); 538291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 539291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(iea->var, ie); 540291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->n_fixed = 0; 541291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 542291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Just add to the fixed array. */ 543291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj iea->fixed[iea->n_fixed++] = *ie; 544291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 545291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 546291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 547291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 548291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic UWord OutEdgeArr__size ( OutEdgeArr* oea ) 549291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 550291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oea->var) { 551291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed == 0); 552291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return VG_(sizeXA)(oea->var); 553291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 554291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed <= N_FIXED_OUT_EDGE_ARR); 555291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return oea->n_fixed; 556291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 557291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 558291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 559291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void OutEdgeArr__makeEmpty ( OutEdgeArr* oea ) 560291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 561291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oea->var) { 562291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed == 0); 563291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(deleteXA)(oea->var); 564291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->var = NULL; 565291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 566291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed <= N_FIXED_OUT_EDGE_ARR); 567291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->n_fixed = 0; 568291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 569291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 570291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 571291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 572291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjOutEdge* OutEdgeArr__index ( OutEdgeArr* oea, UWord i ) 573291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 574291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oea->var) { 575291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed == 0); 576291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return (OutEdge*)VG_(indexXA)(oea->var, i); 577291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 578291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(i < oea->n_fixed); 579291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return &oea->fixed[i]; 580291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 581291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 582291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 583291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 584291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjvoid OutEdgeArr__deleteIndex ( OutEdgeArr* oea, UWord i ) 585291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 586291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oea->var) { 587291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed == 0); 588291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(removeIndexXA)(oea->var, i); 589291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 590291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(i < oea->n_fixed); 591291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (; i+1 < oea->n_fixed; i++) { 592291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->fixed[i] = oea->fixed[i+1]; 593291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 594291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->n_fixed--; 595291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 596291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 597291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 598291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 599291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjvoid OutEdgeArr__add ( OutEdgeArr* oea, OutEdge* oe ) 600291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 601291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oea->var) { 602291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed == 0); 603291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(oea->var, oe); 604291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 605291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(oea->n_fixed <= N_FIXED_OUT_EDGE_ARR); 606291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oea->n_fixed == N_FIXED_OUT_EDGE_ARR) { 607291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* The fixed array is full, so we have to initialise an 608291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray and copy the fixed array into it. */ 609291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->var = VG_(newXA)(ttaux_malloc, "transtab.OEA__add", 610291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ttaux_free, 611291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sizeof(OutEdge)); 612291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UWord i; 613291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (i = 0; i < oea->n_fixed; i++) { 614291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(oea->var, &oea->fixed[i]); 615291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 616291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(oea->var, oe); 617291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->n_fixed = 0; 618291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } else { 619291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Just add to the fixed array. */ 620291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oea->fixed[oea->n_fixed++] = *oe; 621291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 622291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 623291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 624291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 625291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 626291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjInt HostExtent__cmpOrd ( void* v1, void* v2 ) 627291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 628291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HostExtent* hx1 = (HostExtent*)v1; 629291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HostExtent* hx2 = (HostExtent*)v2; 630291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (hx1->start + hx1->len <= hx2->start) return -1; 631291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (hx2->start + hx2->len <= hx1->start) return 1; 632291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return 0; /* partial overlap */ 633291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 634291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 635291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic __attribute__((noinline)) 636291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjBool find_TTEntry_from_hcode( /*OUT*/UInt* from_sNo, 637291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /*OUT*/UInt* from_tteNo, 638291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj void* hcode ) 639291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 640291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int i; 641291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 642291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Search order logic copied from VG_(search_transtab). */ 643291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (i = 0; i < N_SECTORS; i++) { 644291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int sno = sector_search_order[i]; 645291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (UNLIKELY(sno == -1)) 646291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return False; /* run out of sectors to search */ 647291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 648291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Sector* sec = §ors[sno]; 649291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray* /* of HostExtent */ host_extents = sec->host_extents; 650291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(host_extents); 651291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 652291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HostExtent key; 653291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(memset)(&key, 0, sizeof(key)); 654291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj key.start = hcode; 655291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj key.len = 1; 656291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Word firstW = -1, lastW = -1; 657291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Bool found = VG_(lookupXA_UNSAFE)( 658291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj host_extents, &key, &firstW, &lastW, 659291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (Int(*)(void*,void*))HostExtent__cmpOrd 660291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ); 661291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(firstW == lastW); // always true, even if not found 662291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (found) { 663291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HostExtent* hx = VG_(indexXA)(host_extents, firstW); 664291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt tteNo = hx->tteNo; 665291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Do some additional sanity checks. */ 666291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(tteNo <= N_TTES_PER_SECTOR); 667291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Entry might have been invalidated. Consider this 668291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj as not found. */ 669291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (sec->tt[tteNo].status == Deleted) 670291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return False; 671291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(sec->tt[tteNo].status == InUse); 672291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Can only half check that the found TTEntry contains hcode, 673291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj due to not having a length value for the hcode in the 674291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry. */ 675291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert((UChar*)sec->tt[tteNo].tcptr <= (UChar*)hcode); 676291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Looks plausible */ 677291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj *from_sNo = sno; 678291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj *from_tteNo = (UInt)tteNo; 679291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return True; 680291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 681291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 682291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return False; 683291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 684291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 685291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 686291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* Figure out whether or not hcode is jitted code present in the main 687291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj code cache (but not in the no-redir cache). Used for sanity 688291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj checking. */ 689291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic Bool is_in_the_main_TC ( void* hcode ) 690291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 691291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int i, sno; 692291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (i = 0; i < N_SECTORS; i++) { 693291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sno = sector_search_order[i]; 694291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (sno == -1) 695291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj break; /* run out of sectors to search */ 696291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if ((UChar*)hcode >= (UChar*)sectors[sno].tc 697291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj && (UChar*)hcode <= (UChar*)sectors[sno].tc_next 698291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj + sizeof(ULong) - 1) 699291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return True; 700291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 701291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return False; 702291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 703291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 704291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 705291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* Fulfill a chaining request, and record admin info so we 706291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj can undo it later, if required. 707291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj*/ 708291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjvoid VG_(tt_tc_do_chaining) ( void* from__patch_addr, 709291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt to_sNo, 710291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt to_tteNo, 711291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Bool to_fastEP ) 712291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 713291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Get the CPU info established at startup. */ 714291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch vex_arch = VexArch_INVALID; 715291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(machine_get_VexArchInfo)( &vex_arch, NULL ); 716291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 717291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // host_code is where we're patching to. So it needs to 718291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // take into account, whether we're jumping to the slow 719291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // or fast entry point. By definition, the fast entry point 720291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // is exactly one event check's worth of code along from 721291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // the slow (tcptr) entry point. 722291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* to_tte = index_tte(to_sNo, to_tteNo); 723291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj void* host_code = ((UChar*)to_tte->tcptr) 724291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj + (to_fastEP ? LibVEX_evCheckSzB(vex_arch) : 0); 725291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 726291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // stay sane -- the patch point (dst) is in this sector's code cache 727291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert( (UChar*)host_code >= (UChar*)sectors[to_sNo].tc ); 728291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert( (UChar*)host_code <= (UChar*)sectors[to_sNo].tc_next 729291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj + sizeof(ULong) - 1 ); 730291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 731291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Find the TTEntry for the from__ code. This isn't simple since 732291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj we only know the patch address, which is going to be somewhere 733291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj inside the from_ block. */ 734291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt from_sNo = (UInt)-1; 735291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt from_tteNo = (UInt)-1; 736291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Bool from_found 737291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = find_TTEntry_from_hcode( &from_sNo, &from_tteNo, 738291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj from__patch_addr ); 739291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (!from_found) { 740291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // The from code might have been discarded due to sector re-use 741291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // or marked Deleted due to translation invalidation. 742291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // In such a case, don't do the chaining. 743291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(debugLog)(1,"transtab", 744291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj "host code %p not found (discarded? sector recycled?)" 745291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj " => no chaining done\n", 746291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj from__patch_addr); 747291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj return; 748291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 749291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 750291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* from_tte = index_tte(from_sNo, from_tteNo); 751291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 752291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Get VEX to do the patching itself. We have to hand it off 753291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj since it is host-dependent. */ 754291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexInvalRange vir 755291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = LibVEX_Chain( 756291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vex_arch, 757291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj from__patch_addr, 758291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(fnptr_to_fnentry)( 759291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj to_fastEP ? &VG_(disp_cp_chain_me_to_fastEP) 760291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj : &VG_(disp_cp_chain_me_to_slowEP)), 761291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj (void*)host_code 762291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ); 763291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(invalidate_icache)( (void*)vir.start, vir.len ); 764291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 765291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Now do the tricky bit -- update the ch_succs and ch_preds info 766291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for the two translations involved, so we can undo the chaining 767291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj later, which we will have to do if the to_ block gets removed 768291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for whatever reason. */ 769291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 770291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* This is the new from_ -> to_ link to add. */ 771291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge ie; 772291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge__init(&ie); 773291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie.from_sNo = from_sNo; 774291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie.from_tteNo = from_tteNo; 775291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie.to_fastEP = to_fastEP; 776291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HWord from_offs = (HWord)( (UChar*)from__patch_addr 777291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj - (UChar*)from_tte->tcptr ); 778291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(from_offs < 100000/* let's say */); 779291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie.from_offs = (UInt)from_offs; 780291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 781291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* This is the new to_ -> from_ backlink to add. */ 782291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdge oe; 783291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdge__init(&oe); 784291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oe.to_sNo = to_sNo; 785291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oe.to_tteNo = to_tteNo; 786291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj oe.from_offs = (UInt)from_offs; 787291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 788291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Add .. */ 789291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdgeArr__add(&to_tte->in_edges, &ie); 790291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdgeArr__add(&from_tte->out_edges, &oe); 791291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 792291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 793291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 794291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* Unchain one patch, as described by the specified InEdge. For 795291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sanity check purposes only (to check that the patched location is 796291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj as expected) it also requires the fast and slow entry point 797291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj addresses of the destination block (that is, the block that owns 798291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj this InEdge). */ 799291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj__attribute__((noinline)) 800291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void unchain_one ( VexArch vex_arch, 801291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge* ie, 802291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj void* to_fastEPaddr, void* to_slowEPaddr ) 803291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 804291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(ie); 805291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* tte 806291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = index_tte(ie->from_sNo, ie->from_tteNo); 807291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UChar* place_to_patch 80819f91bbaedb4caef8a60ce94b0f507193cc0bc10florian = ((UChar*)tte->tcptr) + ie->from_offs; 809291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UChar* disp_cp_chain_me 810291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = VG_(fnptr_to_fnentry)( 811291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ie->to_fastEP ? &VG_(disp_cp_chain_me_to_fastEP) 812291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj : &VG_(disp_cp_chain_me_to_slowEP) 813291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ); 814291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UChar* place_to_jump_to_EXPECTED 815291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = ie->to_fastEP ? to_fastEPaddr : to_slowEPaddr; 816291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 817291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // stay sane: both src and dst for this unchaining are 818291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // in the main code cache 819291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert( is_in_the_main_TC(place_to_patch) ); // src 820291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert( is_in_the_main_TC(place_to_jump_to_EXPECTED) ); // dst 821291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // dst check is ok because LibVEX_UnChain checks that 822291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // place_to_jump_to_EXPECTED really is the current dst, and 823291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // asserts if it isn't. 824291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexInvalRange vir 825291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = LibVEX_UnChain( vex_arch, place_to_patch, 826291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj place_to_jump_to_EXPECTED, disp_cp_chain_me ); 827291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(invalidate_icache)( (void*)vir.start, vir.len ); 828291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 829291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 830291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 831291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* The specified block is about to be deleted. Update the preds and 832291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj succs of its associated blocks accordingly. This includes undoing 833291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj any chained jumps to this block. */ 834291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic 835291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjvoid unchain_in_preparation_for_deletion ( VexArch vex_arch, 836291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UInt here_sNo, UInt here_tteNo ) 837291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj{ 838291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (0) 839291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(printf)("QQQ unchain_in_prep %u.%u\n", here_sNo, here_tteNo); 840291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UWord i, j, n, m; 841291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int evCheckSzB = LibVEX_evCheckSzB(vex_arch); 842291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* here_tte = index_tte(here_sNo, here_tteNo); 843291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(here_tte->status == InUse); 844291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 845291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Visit all InEdges owned by here_tte. */ 846291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj n = InEdgeArr__size(&here_tte->in_edges); 847291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (i = 0; i < n; i++) { 848291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge* ie = InEdgeArr__index(&here_tte->in_edges, i); 849291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // Undo the chaining. 850291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UChar* here_slow_EP = (UChar*)here_tte->tcptr; 851291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj UChar* here_fast_EP = here_slow_EP + evCheckSzB; 852291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj unchain_one(vex_arch, ie, here_fast_EP, here_slow_EP); 853291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // Find the corresponding entry in the "from" node's out_edges, 854291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // and remove it. 855291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* from_tte = index_tte(ie->from_sNo, ie->from_tteNo); 856291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj m = OutEdgeArr__size(&from_tte->out_edges); 857291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(m > 0); // it must have at least one entry 858291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (j = 0; j < m; j++) { 859291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdge* oe = OutEdgeArr__index(&from_tte->out_edges, j); 860291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (oe->to_sNo == here_sNo && oe->to_tteNo == here_tteNo 861291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj && oe->from_offs == ie->from_offs) 862291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj break; 863291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 864291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(j < m); // "oe must be findable" 865291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdgeArr__deleteIndex(&from_tte->out_edges, j); 866291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 867291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 868291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Visit all OutEdges owned by here_tte. */ 869291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj n = OutEdgeArr__size(&here_tte->out_edges); 870291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (i = 0; i < n; i++) { 871291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdge* oe = OutEdgeArr__index(&here_tte->out_edges, i); 872291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // Find the corresponding entry in the "to" node's in_edges, 873291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj // and remove it. 874291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry* to_tte = index_tte(oe->to_sNo, oe->to_tteNo); 875291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj m = InEdgeArr__size(&to_tte->in_edges); 876291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(m > 0); // it must have at least one entry 877291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj for (j = 0; j < m; j++) { 878291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdge* ie = InEdgeArr__index(&to_tte->in_edges, j); 879291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (ie->from_sNo == here_sNo && ie->from_tteNo == here_tteNo 880291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj && ie->from_offs == oe->from_offs) 881291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj break; 882291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 883291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(j < m); // "ie must be findable" 884291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdgeArr__deleteIndex(&to_tte->in_edges, j); 885291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 886291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 887291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj InEdgeArr__makeEmpty(&here_tte->in_edges); 888291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj OutEdgeArr__makeEmpty(&here_tte->out_edges); 889291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj} 890fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 891fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 8926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 8936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*--- Address-range equivalence class stuff ---*/ 8946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 8956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 8966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Return equivalence class number for a range. */ 8976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 8986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic Int range_to_eclass ( Addr64 start, UInt len ) 8996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 9006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt mask = (1 << ECLASS_WIDTH) - 1; 9016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt lo = (UInt)start; 9026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt hi = lo + len - 1; 9036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt loBits = (lo >> ECLASS_SHIFT) & mask; 9046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt hiBits = (hi >> ECLASS_SHIFT) & mask; 9056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (loBits == hiBits) { 9066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(loBits < ECLASS_N-1); 9076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return loBits; 9086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 9096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return ECLASS_MISC; 9106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 9116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 9126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Calculates the equivalence class numbers for any VexGuestExtent. 9156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj These are written in *eclasses, which must be big enough to hold 3 9166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Ints. The number written, between 1 and 3, is returned. The 9176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclasses are presented in order, and any duplicates are removed. 9186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj*/ 9196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 9216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjInt vexGuestExtents_to_eclasses ( /*OUT*/Int* eclasses, 9226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VexGuestExtents* vge ) 9236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 9246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# define SWAP(_lv1,_lv2) \ 9256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj do { Int t = _lv1; _lv1 = _lv2; _lv2 = t; } while (0) 9266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, j, n_ec, r; 9286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(vge->n_used >= 1 && vge->n_used <= 3); 9306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_ec = 0; 9326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < vge->n_used; i++) { 9336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj r = range_to_eclass( vge->base[i], (UInt)vge->len[i] ); 9346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (r == ECLASS_MISC) 9356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj goto bad; 9366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* only add if we haven't already seen it */ 9376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < n_ec; j++) 9386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[j] == r) 9396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj break; 9406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (j == n_ec) 9416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclasses[n_ec++] = r; 9426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 9436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n_ec == 1) 9456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 1; 9466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n_ec == 2) { 9486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* sort */ 9496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[0] > eclasses[1]) 9506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[0], eclasses[1]); 9516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 2; 9526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 9536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n_ec == 3) { 9556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* sort */ 9566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[0] > eclasses[2]) 9576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[0], eclasses[2]); 9586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[0] > eclasses[1]) 9596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[0], eclasses[1]); 9606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (eclasses[1] > eclasses[2]) 9616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj SWAP(eclasses[1], eclasses[2]); 9626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 3; 9636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 9646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* NOTREACHED */ 9666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(0); 9676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj bad: 9696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclasses[0] = ECLASS_MISC; 9706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return 1; 9716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# undef SWAP 9736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 9746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Add tteno to the set of entries listed for equivalence class ec in 9776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj this sector. Returns used location in eclass array. */ 9786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 9806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjUInt addEClassNo ( /*MOD*/Sector* sec, Int ec, UShort tteno ) 9816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 9826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int old_sz, new_sz, i, r; 9836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort *old_ar, *new_ar; 9846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec >= 0 && ec < ECLASS_N); 9866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno < N_TTES_PER_SECTOR); 9876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (0) VG_(printf)("ec %d gets %d\n", ec, (Int)tteno); 9896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_used[ec] >= sec->ec2tte_size[ec]) { 9916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_used[ec] == sec->ec2tte_size[ec]); 9936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 9946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj old_sz = sec->ec2tte_size[ec]; 9956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj old_ar = sec->ec2tte[ec]; 9966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj new_sz = old_sz==0 ? 8 : old_sz<64 ? 2*old_sz : (3*old_sz)/2; 997291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj new_ar = ttaux_malloc("transtab.aECN.1", 998291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj new_sz * sizeof(UShort)); 9996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < old_sz; i++) 10006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj new_ar[i] = old_ar[i]; 10016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (old_ar) 1002291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ttaux_free(old_ar); 10036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte_size[ec] = new_sz; 10046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[ec] = new_ar; 10056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (0) VG_(printf)("expand ec %d to %d\n", ec, new_sz); 10076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Common case */ 10106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj r = sec->ec2tte_used[ec]++; 10116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(r >= 0 && r < sec->ec2tte_size[ec]); 10126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[ec][r] = tteno; 10136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return (UInt)r; 10146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 10156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* 'vge' is being added to 'sec' at TT entry 'tteno'. Add appropriate 10186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj eclass entries to 'sec'. */ 10196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 10216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjvoid upd_eclasses_after_add ( /*MOD*/Sector* sec, Int tteno ) 10226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 10236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, r, eclasses[3]; 10246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 10256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno >= 0 && tteno < N_TTES_PER_SECTOR); 10266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 10286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj r = vexGuestExtents_to_eclasses( eclasses, &tte->vge ); 10296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(r >= 1 && r <= 3); 10316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->n_tte2ec = r; 10326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < r; i++) { 10346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->tte2ec_ec[i] = eclasses[i]; 10356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->tte2ec_ix[i] = addEClassNo( sec, eclasses[i], (UShort)tteno ); 10366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 10376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 10386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Check the eclass info in 'sec' to ensure it is consistent. Returns 10416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj True if OK, False if something's not right. Expensive. */ 10426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic Bool sanity_check_eclasses_in_sector ( Sector* sec ) 10446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 10456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# define BAD(_str) do { whassup = (_str); goto bad; } while (0) 10466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj HChar* whassup = NULL; 10486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, j, k, n, ec_num, ec_idx; 10496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 10506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort tteno; 10516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ULong* tce; 10526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Basic checks on this sector */ 10546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tt_n_inuse < 0 || sec->tt_n_inuse > N_TTES_PER_SECTOR_USABLE) 10556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("invalid sec->tt_n_inuse"); 10566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tce = sec->tc_next; 10576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tce < &sec->tc[0] || tce > &sec->tc[tc_sector_szQ]) 10586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("sec->tc_next points outside tc"); 10596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* For each eclass ... */ 10616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 10626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_size[i] == 0 && sec->ec2tte[i] != NULL) 10636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("ec2tte_size/ec2tte mismatch(1)"); 10646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_size[i] != 0 && sec->ec2tte[i] == NULL) 10656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("ec2tte_size/ec2tte mismatch(2)"); 10666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_used[i] < 0 10676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj || sec->ec2tte_used[i] > sec->ec2tte_size[i]) 10686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("implausible ec2tte_used"); 10696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_used[i] == 0) 10706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 10716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* For each tt reference in each eclass .. ensure the reference 10736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj is to a valid tt entry, and that the entry's address ranges 10746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj really include this eclass. */ 10756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 10766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < sec->ec2tte_used[i]; j++) { 10776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tteno = sec->ec2tte[i][j]; 10786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tteno == EC2TTE_DELETED) 10796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 10806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tteno >= N_TTES_PER_SECTOR) 10816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("implausible tteno"); 10826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 10836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status != InUse) 10846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tteno points to non-inuse tte"); 10856c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->n_tte2ec < 1 || tte->n_tte2ec > 3) 10866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->n_tte2ec out of range"); 10876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Exactly least one of tte->eclasses[0 .. tte->n_eclasses-1] 10886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj must equal i. Inspect tte's eclass info. */ 10896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n = 0; 10906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (k = 0; k < tte->n_tte2ec; k++) { 10916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (k < tte->n_tte2ec-1 10926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj && tte->tte2ec_ec[k] >= tte->tte2ec_ec[k+1]) 10936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->tte2ec_ec[..] out of order"); 10946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_num = tte->tte2ec_ec[k]; 10956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_num < 0 || ec_num >= ECLASS_N) 10966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->tte2ec_ec[..] out of range"); 10976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_num != i) 10986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 10996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_idx = tte->tte2ec_ix[k]; 11006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_idx < 0 || ec_idx >= sec->ec2tte_used[i]) 11016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->tte2ec_ix[..] out of range"); 11026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_idx == j) 11036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n++; 11046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (n != 1) 11066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tteno does not point back at eclass"); 11076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* That establishes that for each forward pointer from TTEntrys 11116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj there is a corresponding backward pointer from the eclass[] 11126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj arrays. However, it doesn't rule out the possibility of other, 11136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj bogus pointers in the eclass[] arrays. So do those similarly: 11146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj scan through them and check the TTEntryies they point at point 11156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj back. */ 11166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR_USABLE; i++) { 11186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[i]; 11206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status == Empty || tte->status == Deleted) { 11216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->n_tte2ec != 0) 11226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->n_eclasses nonzero for unused tte"); 11236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 11246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->status == InUse); 11276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->n_tte2ec < 1 || tte->n_tte2ec > 3) 11296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->n_eclasses out of range(2)"); 11306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < tte->n_tte2ec; j++) { 11326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_num = tte->tte2ec_ec[j]; 11336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_num < 0 || ec_num >= ECLASS_N) 11346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->eclass[..] out of range"); 11356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_idx = tte->tte2ec_ix[j]; 11366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec_idx < 0 || ec_idx >= sec->ec2tte_used[ec_num]) 11376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("tte->ec_idx[..] out of range(2)"); 11386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte[ec_num][ec_idx] != i) 11396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj BAD("ec2tte does not point back to tte"); 11406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return True; 11446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj bad: 11466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (whassup) 11476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(debugLog)(0, "transtab", "eclass sanity fail: %s\n", whassup); 11486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# if 0 11506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("eclass = %d\n", i); 11516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("tteno = %d\n", (Int)tteno); 11526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj switch (tte->status) { 11536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj case InUse: VG_(printf)("InUse\n"); break; 11546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj case Deleted: VG_(printf)("Deleted\n"); break; 11556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj case Empty: VG_(printf)("Empty\n"); break; 11566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status != Empty) { 11586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (k = 0; k < tte->vge.n_used; k++) 11596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("0x%llx %d\n", tte->vge.base[k], 11606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj (Int)tte->vge.len[k]); 11616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 11626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# endif 11636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return False; 11656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj# undef BAD 11676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 11686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Sanity check absolutely everything. True == check passed. */ 11716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 11725f76de086a6d643db51e50a4e623df7dfc9b6161sewardj/* forwards */ 11730ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic Bool sanity_check_redir_tt_tc ( void ); 11740ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 11755d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardjstatic Bool sanity_check_sector_search_order ( void ) 11765d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj{ 11775d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj Int i, j, nListed; 11785d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* assert the array is the right size */ 11795d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj vg_assert(N_SECTORS == (sizeof(sector_search_order) 11805d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj / sizeof(sector_search_order[0]))); 11815d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Check it's of the form valid_sector_numbers ++ [-1, -1, ..] */ 11825d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (i = 0; i < N_SECTORS; i++) { 11835d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sector_search_order[i] < 0 || sector_search_order[i] >= N_SECTORS) 11845d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj break; 11855d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 11865d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj nListed = i; 11875d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (/* */; i < N_SECTORS; i++) { 11885d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sector_search_order[i] != -1) 11895d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj break; 11905d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 11915d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (i != N_SECTORS) 11925d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj return False; 11935d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Check each sector number only appears once */ 11945d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (i = 0; i < N_SECTORS; i++) { 11955d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sector_search_order[i] == -1) 11965d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj continue; 11975d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (j = i+1; j < N_SECTORS; j++) { 11985d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sector_search_order[j] == sector_search_order[i]) 11995d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj return False; 12005d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 12015d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 12025d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Check that the number of listed sectors equals the number 12035d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj in use, by counting nListed back down. */ 12045d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (i = 0; i < N_SECTORS; i++) { 12055d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sectors[i].tc != NULL) 12065d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj nListed--; 12075d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 12085d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (nListed != 0) 12095d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj return False; 12105d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj return True; 12115d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj} 12125d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 12136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic Bool sanity_check_all_sectors ( void ) 12146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 12156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int sno; 12166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool sane; 12176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Sector* sec; 12186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 12196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 12206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 12216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 12226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sane = sanity_check_eclasses_in_sector( sec ); 12236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (!sane) 12246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return False; 12256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 12265f76de086a6d643db51e50a4e623df7dfc9b6161sewardj if ( !sanity_check_redir_tt_tc() ) 12275f76de086a6d643db51e50a4e623df7dfc9b6161sewardj return False; 12285d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if ( !sanity_check_sector_search_order() ) 12295d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj return False; 12306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return True; 12316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 12326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1233fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 12345d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 1235fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*-------------------------------------------------------------*/ 12366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*--- Add/find translations ---*/ 1237fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*-------------------------------------------------------------*/ 1238fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1239fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic UInt vge_osize ( VexGuestExtents* vge ) 1240c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj{ 1241fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt i, n = 0; 1242fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < vge->n_used; i++) 1243fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n += (UInt)vge->len[i]; 1244fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return n; 1245c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj} 1246c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj 1247fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic Bool isValidSector ( Int sector ) 12486c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 1249fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sector < 0 || sector >= N_SECTORS) 1250fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 1251fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 12526c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1253de4a1d01951937632098a6cda45859afa587a06fsewardj 1254fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic inline UInt HASH_TT ( Addr64 key ) 1255de4a1d01951937632098a6cda45859afa587a06fsewardj{ 1256fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt kHi = (UInt)(key >> 32); 1257fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UInt kLo = (UInt)key; 12586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt k32 = kHi ^ kLo; 12596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UInt ror = 7; 12606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ror > 0) 12616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj k32 = (k32 >> ror) | (k32 << (32-ror)); 12626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return k32 % N_TTES_PER_SECTOR; 1263de4a1d01951937632098a6cda45859afa587a06fsewardj} 1264de4a1d01951937632098a6cda45859afa587a06fsewardj 1265291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void setFastCacheEntry ( Addr64 key, ULong* tcptr ) 1266de4a1d01951937632098a6cda45859afa587a06fsewardj{ 12673387dda4479102751d544c176a7bfc24f3766669sewardj UInt cno = (UInt)VG_TT_FAST_HASH(key); 12685f76de086a6d643db51e50a4e623df7dfc9b6161sewardj VG_(tt_fast)[cno].guest = (Addr)key; 12695f76de086a6d643db51e50a4e623df7dfc9b6161sewardj VG_(tt_fast)[cno].host = (Addr)tcptr; 1270fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_fast_updates++; 12715f76de086a6d643db51e50a4e623df7dfc9b6161sewardj /* This shouldn't fail. It should be assured by m_translate 12725f76de086a6d643db51e50a4e623df7dfc9b6161sewardj which should reject any attempt to make translation of code 12735f76de086a6d643db51e50a4e623df7dfc9b6161sewardj starting at TRANSTAB_BOGUS_GUEST_ADDR. */ 12745f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(VG_(tt_fast)[cno].guest != TRANSTAB_BOGUS_GUEST_ADDR); 12756c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1276de4a1d01951937632098a6cda45859afa587a06fsewardj 1277291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj/* Invalidate the fast cache VG_(tt_fast). */ 12785f76de086a6d643db51e50a4e623df7dfc9b6161sewardjstatic void invalidateFastCache ( void ) 12795f76de086a6d643db51e50a4e623df7dfc9b6161sewardj{ 12805f76de086a6d643db51e50a4e623df7dfc9b6161sewardj UInt j; 12815f76de086a6d643db51e50a4e623df7dfc9b6161sewardj /* This loop is popular enough to make it worth unrolling a 12825f76de086a6d643db51e50a4e623df7dfc9b6161sewardj bit, at least on ppc32. */ 12835f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(VG_TT_FAST_SIZE > 0 && (VG_TT_FAST_SIZE % 4) == 0); 12845f76de086a6d643db51e50a4e623df7dfc9b6161sewardj for (j = 0; j < VG_TT_FAST_SIZE; j += 4) { 12855f76de086a6d643db51e50a4e623df7dfc9b6161sewardj VG_(tt_fast)[j+0].guest = TRANSTAB_BOGUS_GUEST_ADDR; 12865f76de086a6d643db51e50a4e623df7dfc9b6161sewardj VG_(tt_fast)[j+1].guest = TRANSTAB_BOGUS_GUEST_ADDR; 12875f76de086a6d643db51e50a4e623df7dfc9b6161sewardj VG_(tt_fast)[j+2].guest = TRANSTAB_BOGUS_GUEST_ADDR; 12885f76de086a6d643db51e50a4e623df7dfc9b6161sewardj VG_(tt_fast)[j+3].guest = TRANSTAB_BOGUS_GUEST_ADDR; 12895f76de086a6d643db51e50a4e623df7dfc9b6161sewardj } 12905f76de086a6d643db51e50a4e623df7dfc9b6161sewardj 12915f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(j == VG_TT_FAST_SIZE); 1292fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_fast_flushes++; 12936c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1294de4a1d01951937632098a6cda45859afa587a06fsewardj 1295fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic void initialiseSector ( Int sno ) 12966c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 1297291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int i; 1298291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj SysRes sres; 12996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Sector* sec; 1300fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(isValidSector(sno)); 1301fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 13025d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj { Bool sane = sanity_check_sector_search_order(); 13035d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj vg_assert(sane); 13045d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 13056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 13066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 13076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) { 13086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1309fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Sector has never been used before. Need to allocate tt and 1310fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tc. */ 13116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt == NULL); 13126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tc_next == NULL); 13136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt_n_inuse == 0); 13146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 13156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_size[i] == 0); 13166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_used[i] == 0); 13176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[i] == NULL); 13186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 1319291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(sec->host_extents == NULL); 132045f4e7c91119c7d01a59f5e827c67841632c9314sewardj 132145f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(1,"transtab", "allocate sector %d\n", sno); 132245f4e7c91119c7d01a59f5e827c67841632c9314sewardj 132345f4e7c91119c7d01a59f5e827c67841632c9314sewardj sres = VG_(am_mmap_anon_float_valgrind)( 8 * tc_sector_szQ ); 1324cda2f0fbda4c4b2644babc830244be8aed95de1dnjn if (sr_isError(sres)) { 132545f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(out_of_memory_NORETURN)("initialiseSector(TC)", 132645f4e7c91119c7d01a59f5e827c67841632c9314sewardj 8 * tc_sector_szQ ); 132745f4e7c91119c7d01a59f5e827c67841632c9314sewardj /*NOTREACHED*/ 132845f4e7c91119c7d01a59f5e827c67841632c9314sewardj } 1329cda2f0fbda4c4b2644babc830244be8aed95de1dnjn sec->tc = (ULong*)(AddrH)sr_Res(sres); 133045f4e7c91119c7d01a59f5e827c67841632c9314sewardj 133145f4e7c91119c7d01a59f5e827c67841632c9314sewardj sres = VG_(am_mmap_anon_float_valgrind) 133245f4e7c91119c7d01a59f5e827c67841632c9314sewardj ( N_TTES_PER_SECTOR * sizeof(TTEntry) ); 1333cda2f0fbda4c4b2644babc830244be8aed95de1dnjn if (sr_isError(sres)) { 133445f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(out_of_memory_NORETURN)("initialiseSector(TT)", 133545f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_TTES_PER_SECTOR * sizeof(TTEntry) ); 133645f4e7c91119c7d01a59f5e827c67841632c9314sewardj /*NOTREACHED*/ 133745f4e7c91119c7d01a59f5e827c67841632c9314sewardj } 1338cda2f0fbda4c4b2644babc830244be8aed95de1dnjn sec->tt = (TTEntry*)(AddrH)sr_Res(sres); 13396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 13406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 13416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].status = Empty; 13426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].n_tte2ec = 0; 13436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 134445f4e7c91119c7d01a59f5e827c67841632c9314sewardj 1345291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Set up the host_extents array. */ 1346291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sec->host_extents 1347291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = VG_(newXA)(ttaux_malloc, "transtab.initialiseSector(host_extents)", 1348291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ttaux_free, 1349291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sizeof(HostExtent)); 1350291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 13515d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Add an entry in the sector_search_order */ 13525d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (i = 0; i < N_SECTORS; i++) { 13535d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sector_search_order[i] == -1) 13545d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj break; 13555d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 13565d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj vg_assert(i >= 0 && i < N_SECTORS); 13575d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj sector_search_order[i] = sno; 13585d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 1359fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) 1360738856f99eea33d86ce91dcb1d6cd5b151e307casewardj VG_(message)(Vg_DebugMsg, "TT/TC: initialise sector %d\n", sno); 13616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1362fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } else { 13636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 13646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Sector has been used before. Dump the old contents. */ 136545f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(1,"transtab", "recycle sector %d\n", sno); 13666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt != NULL); 13676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tc_next != NULL); 13686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_dump_count += sec->tt_n_inuse; 13696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1370291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch vex_arch = VexArch_INVALID; 1371291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(machine_get_VexArchInfo)( &vex_arch, NULL ); 1372291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 13736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Visit each just-about-to-be-abandoned translation. */ 1374e25053c5aaefc6a4039dcd557adf24d8bb23db69sewardj if (0) VG_(printf)("QQQ unlink-entire-sector: %d START\n", sno); 1375fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 13766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tt[i].status == InUse) { 13776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt[i].n_tte2ec >= 1); 13786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt[i].n_tte2ec <= 3); 13796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_dump_osize += vge_osize(&sec->tt[i].vge); 13803786772222c5b31fd6cc5586bcd1ce0da58f1dbesewardj /* Tell the tool too. */ 13810b9d74abd0a663b530d290b2b788ddeda46e5400sewardj if (VG_(needs).superblock_discards) { 13820b9d74abd0a663b530d290b2b788ddeda46e5400sewardj VG_TDICT_CALL( tool_discard_superblock_info, 13834ba057cce1d81a949f5a899b5abb99e90a731bccsewardj sec->tt[i].entry, 13846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].vge ); 13853786772222c5b31fd6cc5586bcd1ce0da58f1dbesewardj } 1386291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj unchain_in_preparation_for_deletion(vex_arch, sno, i); 13876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 13886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->tt[i].n_tte2ec == 0); 13896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 13906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].status = Empty; 13916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt[i].n_tte2ec = 0; 13926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 1393e25053c5aaefc6a4039dcd557adf24d8bb23db69sewardj if (0) VG_(printf)("QQQ unlink-entire-sector: %d END\n", sno); 13946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 13956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Free up the eclass structures. */ 13966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 13976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->ec2tte_size[i] == 0) { 13986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte_used[i] == 0); 13996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[i] == NULL); 14006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 14016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[i] != NULL); 1402291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ttaux_free(sec->ec2tte[i]); 14036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[i] = NULL; 14046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte_size[i] = 0; 14056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte_used[i] = 0; 1406fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 1407fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 14086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1409291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Empty out the host extents array. */ 1410291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(sec->host_extents != NULL); 1411291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(dropTailXA)(sec->host_extents, VG_(sizeXA)(sec->host_extents)); 1412291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(VG_(sizeXA)(sec->host_extents) == 0); 1413291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 14145d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Sanity check: ensure it is already in 14155d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj sector_search_order[]. */ 14165d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (i = 0; i < N_SECTORS; i++) { 14175d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (sector_search_order[i] == sno) 14185d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj break; 14195d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 14205d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj vg_assert(i >= 0 && i < N_SECTORS); 14215d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 1422fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) 1423738856f99eea33d86ce91dcb1d6cd5b151e307casewardj VG_(message)(Vg_DebugMsg, "TT/TC: recycle sector %d\n", sno); 14246c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 14254ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 14266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tc_next = sec->tc; 14276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt_n_inuse = 0; 1428fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1429fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidateFastCache(); 14305d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 14315d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj { Bool sane = sanity_check_sector_search_order(); 14325d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj vg_assert(sane); 14335d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 14346c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1435de4a1d01951937632098a6cda45859afa587a06fsewardj 1436de4a1d01951937632098a6cda45859afa587a06fsewardj 1437fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Add a translation of vge to TT/TC. The translation is temporarily 1438fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj in code[0 .. code_len-1]. 1439de4a1d01951937632098a6cda45859afa587a06fsewardj 1440fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj pre: youngest_sector points to a valid (although possibly full) 1441fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector. 1442fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 14438bddf58af8cc7342d4bde6712c5a6a33bf2850d4njnvoid VG_(add_to_transtab)( VexGuestExtents* vge, 14448bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn Addr64 entry, 14458bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn AddrH code, 144626412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj UInt code_len, 1447291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Bool is_self_checking, 1448291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int offs_profInc, 1449b7301c690606964dd1ece81ce2fd2b6fd90ab012sewardj UInt n_guest_instrs, 1450291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch arch_host ) 145122854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj{ 1452fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int tcAvailQ, reqdQ, y, i; 14535f76de086a6d643db51e50a4e623df7dfc9b6161sewardj ULong *tcptr, *tcptr2; 1454fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UChar* srcP; 1455fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj UChar* dstP; 1456fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1457663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(init_done); 1458fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(vge->n_used >= 1 && vge->n_used <= 3); 1459e808930793aeddc4cfd3e7a94b665913bec2566csewardj 1460e808930793aeddc4cfd3e7a94b665913bec2566csewardj /* 60000: should agree with N_TMPBUF in m_translate.c. */ 1461e808930793aeddc4cfd3e7a94b665913bec2566csewardj vg_assert(code_len > 0 && code_len < 60000); 1462fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1463b7301c690606964dd1ece81ce2fd2b6fd90ab012sewardj /* Generally stay sane */ 1464b7301c690606964dd1ece81ce2fd2b6fd90ab012sewardj vg_assert(n_guest_instrs < 200); /* it can be zero, tho */ 1465b7301c690606964dd1ece81ce2fd2b6fd90ab012sewardj 1466fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (0) 14678bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn VG_(printf)("add_to_transtab(entry = 0x%llx, len = %d)\n", 1468fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj entry, code_len); 1469fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1470fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_count++; 1471fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_tsize += code_len; 1472fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_osize += vge_osize(vge); 147326412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj if (is_self_checking) 147426412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj n_in_sc_count++; 1475fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1476fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj y = youngest_sector; 1477fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(isValidSector(y)); 1478fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1479fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[y].tc == NULL) 1480fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj initialiseSector(y); 1481fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1482fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Try putting the translation in this sector. */ 14835f76de086a6d643db51e50a4e623df7dfc9b6161sewardj reqdQ = (code_len + 7) >> 3; 1484fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1485fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Will it fit in tc? */ 1486fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tcAvailQ = ((ULong*)(§ors[y].tc[tc_sector_szQ])) 1487fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj - ((ULong*)(sectors[y].tc_next)); 1488fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ >= 0); 1489fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ <= tc_sector_szQ); 1490fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1491fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (tcAvailQ < reqdQ 1492fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj || sectors[y].tt_n_inuse >= N_TTES_PER_SECTOR_USABLE) { 1493fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* No. So move on to the next sector. Either it's never been 1494fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj used before, in which case it will get its tt/tc allocated 1495fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj now, or it has been used before, in which case it is set to be 1496fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj empty, hence throwing out the oldest sector. */ 1497a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj vg_assert(tc_sector_szQ > 0); 1498a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj VG_(debugLog)(1,"transtab", 1499a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj "declare sector %d full " 1500a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj "(TT loading %2d%%, TC loading %2d%%)\n", 1501a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj y, 1502a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj (100 * sectors[y].tt_n_inuse) 1503a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj / N_TTES_PER_SECTOR, 1504a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj (100 * (tc_sector_szQ - tcAvailQ)) 1505a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj / tc_sector_szQ); 1506fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest_sector++; 1507fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (youngest_sector >= N_SECTORS) 1508fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest_sector = 0; 1509fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj y = youngest_sector; 1510fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj initialiseSector(y); 1511fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 151222854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 1513fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Be sure ... */ 1514fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tcAvailQ = ((ULong*)(§ors[y].tc[tc_sector_szQ])) 1515fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj - ((ULong*)(sectors[y].tc_next)); 1516fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ >= 0); 1517fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ <= tc_sector_szQ); 1518fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tcAvailQ >= reqdQ); 1519fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sectors[y].tt_n_inuse < N_TTES_PER_SECTOR_USABLE); 1520fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sectors[y].tt_n_inuse >= 0); 1521fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1522fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Copy into tc. */ 15235f76de086a6d643db51e50a4e623df7dfc9b6161sewardj tcptr = sectors[y].tc_next; 15245f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(tcptr >= §ors[y].tc[0]); 15255f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(tcptr <= §ors[y].tc[tc_sector_szQ]); 1526fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 15275f76de086a6d643db51e50a4e623df7dfc9b6161sewardj dstP = (UChar*)tcptr; 1528fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj srcP = (UChar*)code; 1529291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(memcpy)(dstP, srcP, code_len); 1530fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tc_next += reqdQ; 1531fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt_n_inuse++; 1532fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1533fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* more paranoia */ 15345f76de086a6d643db51e50a4e623df7dfc9b6161sewardj tcptr2 = sectors[y].tc_next; 15355f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(tcptr2 >= §ors[y].tc[0]); 15365f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(tcptr2 <= §ors[y].tc[tc_sector_szQ]); 1537fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1538fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Find an empty tt slot, and use it. There must be such a slot 1539fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj since tt is never allowed to get completely full. */ 1540fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj i = HASH_TT(entry); 1541fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(i >= 0 && i < N_TTES_PER_SECTOR); 154222854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj while (True) { 1543fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[y].tt[i].status == Empty 1544fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj || sectors[y].tt[i].status == Deleted) 1545fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; 1546fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj i++; 1547fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (i >= N_TTES_PER_SECTOR) 1548fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj i = 0; 154922854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj } 1550fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1551291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj TTEntry__init(§ors[y].tt[i]); 1552fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].status = InUse; 15535f76de086a6d643db51e50a4e623df7dfc9b6161sewardj sectors[y].tt[i].tcptr = tcptr; 1554fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].count = 0; 1555b7301c690606964dd1ece81ce2fd2b6fd90ab012sewardj sectors[y].tt[i].weight = n_guest_instrs == 0 ? 1 : n_guest_instrs; 1556fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].vge = *vge; 1557fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[y].tt[i].entry = entry; 1558fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1559291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Patch in the profile counter location, if necessary. */ 1560291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (offs_profInc != -1) { 1561291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(offs_profInc >= 0 && offs_profInc < code_len); 1562291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexInvalRange vir 1563291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj = LibVEX_PatchProfInc( arch_host, 1564291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj dstP + offs_profInc, 1565291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj §ors[y].tt[i].count ); 1566291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(invalidate_icache)( (void*)vir.start, vir.len ); 1567291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 1568291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 1569291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(invalidate_icache)( dstP, code_len ); 1570291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 1571291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Add this entry to the host_extents map, checking that we're 1572291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj adding in order. */ 1573291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj { HostExtent hx; 1574291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj hx.start = (UChar*)tcptr; 1575291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj hx.len = code_len; 1576291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj hx.tteNo = i; 1577291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(hx.len > 0); /* bsearch fails w/ zero length entries */ 1578291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj XArray* hx_array = sectors[y].host_extents; 1579291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(hx_array); 1580291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Word n = VG_(sizeXA)(hx_array); 1581291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (n > 0) { 1582291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj HostExtent* hx_prev = (HostExtent*)VG_(indexXA)(hx_array, n-1); 1583291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(hx_prev->start + hx_prev->len <= hx.start); 1584291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 1585291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(addToXA)(hx_array, &hx); 1586291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj } 1587291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 15886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Update the fast-cache. */ 1589291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj setFastCacheEntry( entry, tcptr ); 15906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 15916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Note the eclass numbers for this translation. */ 15926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj upd_eclasses_after_add( §ors[y], i ); 159322854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj} 159422854b907c1925a9af97ad20ca3dacb5e300d6f9sewardj 1595fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1596fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/* Search for the translation of the given guest address. If 1597fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj requested, a successful search can also cause the fast-caches to be 1598fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj updated. 1599fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj*/ 1600291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjBool VG_(search_transtab) ( /*OUT*/AddrH* res_hcode, 1601291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /*OUT*/UInt* res_sNo, 1602291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /*OUT*/UInt* res_tteNo, 1603fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Addr64 guest_addr, 1604fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Bool upd_cache ) 16056c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 1606fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int i, j, k, kstart, sno; 1607663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 1608663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(init_done); 1609fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Find the initial probe point just once. It will be the same in 1610fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj all sectors and avoids multiple expensive % operations. */ 1611fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_full_lookups++; 1612fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k = -1; 1613fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj kstart = HASH_TT(guest_addr); 1614fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(kstart >= 0 && kstart < N_TTES_PER_SECTOR); 1615fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 16165d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Search in all the sectors,using sector_search_order[] as a 16175d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj heuristic guide as to what order to visit the sectors. */ 1618fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_SECTORS; i++) { 1619fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 16205d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj sno = sector_search_order[i]; 16215d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (UNLIKELY(sno == -1)) 16225d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj return False; /* run out of sectors to search */ 1623fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1624fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k = kstart; 1625fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (j = 0; j < N_TTES_PER_SECTOR; j++) { 1626fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_lookup_probes++; 1627fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tt[k].status == InUse 1628fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj && sectors[sno].tt[k].entry == guest_addr) { 1629fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* found it */ 1630fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (upd_cache) 1631fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj setFastCacheEntry( 1632291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj guest_addr, sectors[sno].tt[k].tcptr ); 1633291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (res_hcode) 1634291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj *res_hcode = (AddrH)sectors[sno].tt[k].tcptr; 1635291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (res_sNo) 1636291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj *res_sNo = sno; 1637291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj if (res_tteNo) 1638291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj *res_tteNo = k; 16395d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* pull this one one step closer to the front. For large 16405d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj apps this more or less halves the number of required 16415d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj probes. */ 16425d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj if (i > 0) { 16435d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj Int tmp = sector_search_order[i-1]; 16445d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj sector_search_order[i-1] = sector_search_order[i]; 16455d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj sector_search_order[i] = tmp; 16465d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj } 1647fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 1648fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 1649fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tt[k].status == Empty) 1650fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; /* not found in this sector */ 1651fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k++; 1652fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (k == N_TTES_PER_SECTOR) 1653fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj k = 0; 16546c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 1655fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1656fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* If we fall off the end, all entries are InUse and not 1657fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj matching, or Deleted. In any case we did not find it in this 1658fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sector. */ 16596c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 1660fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1661fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Not found in any sector. */ 1662fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 16636c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1664de4a1d01951937632098a6cda45859afa587a06fsewardj 1665de4a1d01951937632098a6cda45859afa587a06fsewardj 16666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 16676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*--- Delete translations. ---*/ 16686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/*-------------------------------------------------------------*/ 16696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 16700ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* forward */ 16710ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic void unredir_discard_translations( Addr64, ULong ); 16720ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 16736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Stuff for deleting translations which intersect with a given 16746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj address range. Unfortunately, to make this run at a reasonable 16756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj speed, it is complex. */ 1676fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 1677fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic inline 1678a30545069556d3dca4ca3feb7c621bdcb7b34107sewardjBool overlap1 ( Addr64 s1, ULong r1, Addr64 s2, ULong r2 ) 16796c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 1680a30545069556d3dca4ca3feb7c621bdcb7b34107sewardj Addr64 e1 = s1 + r1 - 1ULL; 1681a30545069556d3dca4ca3feb7c621bdcb7b34107sewardj Addr64 e2 = s2 + r2 - 1ULL; 1682fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (e1 < s2 || e2 < s1) 1683fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 1684fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 16856c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1686de4a1d01951937632098a6cda45859afa587a06fsewardj 1687fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic inline 1688a30545069556d3dca4ca3feb7c621bdcb7b34107sewardjBool overlaps ( Addr64 start, ULong range, VexGuestExtents* vge ) 16896c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 1690fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (overlap1(start, range, vge->base[0], (UInt)vge->len[0])) 1691fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 1692fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (vge->n_used < 2) 1693fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 1694fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (overlap1(start, range, vge->base[1], (UInt)vge->len[1])) 1695fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 1696fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (vge->n_used < 3) 1697fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 1698fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (overlap1(start, range, vge->base[2], (UInt)vge->len[2])) 1699fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return True; 1700fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return False; 17016c3769f487145a08c01b58d6e5db3ba274062ad4sewardj} 1702de4a1d01951937632098a6cda45859afa587a06fsewardj 1703de4a1d01951937632098a6cda45859afa587a06fsewardj 17046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Delete a tt entry, and update all the eclass data accordingly. */ 17056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1706291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjstatic void delete_tte ( /*MOD*/Sector* sec, UInt secNo, Int tteno, 1707291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch vex_arch ) 17086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 17096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, ec_num, ec_idx; 17106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 17116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1712291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* sec and secNo are mutually redundant; cross-check. */ 1713291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vg_assert(sec == §ors[secNo]); 1714291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 17156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno >= 0 && tteno < N_TTES_PER_SECTOR); 17166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 17176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->status == InUse); 17186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->n_tte2ec >= 1 && tte->n_tte2ec <= 3); 17196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1720291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Unchain .. */ 1721291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj unchain_in_preparation_for_deletion(vex_arch, secNo, tteno); 1722291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 17236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Deal with the ec-to-tte links first. */ 17246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < tte->n_tte2ec; i++) { 17256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_num = (Int)tte->tte2ec_ec[i]; 17266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec_idx = tte->tte2ec_ix[i]; 17276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec_num >= 0 && ec_num < ECLASS_N); 17286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec_idx >= 0); 17296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec_idx < sec->ec2tte_used[ec_num]); 17306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Assert that the two links point at each other. */ 17316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sec->ec2tte[ec_num][ec_idx] == (UShort)tteno); 17326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* "delete" the pointer back to here. */ 17336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->ec2tte[ec_num][ec_idx] = EC2TTE_DELETED; 17346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 17356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Now fix up this TTEntry. */ 17376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->status = Deleted; 17386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->n_tte2ec = 0; 17396c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17406c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Stats .. */ 17416c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec->tt_n_inuse--; 17426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_disc_count++; 17436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj n_disc_osize += vge_osize(&tte->vge); 17446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Tell the tool too. */ 17460b9d74abd0a663b530d290b2b788ddeda46e5400sewardj if (VG_(needs).superblock_discards) { 17470b9d74abd0a663b530d290b2b788ddeda46e5400sewardj VG_TDICT_CALL( tool_discard_superblock_info, 17484ba057cce1d81a949f5a899b5abb99e90a731bccsewardj tte->entry, 17496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte->vge ); 17506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 17516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 17526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Delete translations from sec which intersect specified range, but 17556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj only consider translations in the specified eclass. */ 17566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 1758291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjBool delete_translations_in_sector_eclass ( /*MOD*/Sector* sec, UInt secNo, 17596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Addr64 guest_start, ULong range, 1760291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Int ec, 1761291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch vex_arch ) 17626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 17636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 17646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj UShort tteno; 17656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool anyDeld = False; 17666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 17676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec >= 0 && ec < ECLASS_N); 17696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < sec->ec2tte_used[ec]; i++) { 17716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tteno = sec->ec2tte[ec][i]; 17736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tteno == EC2TTE_DELETED) { 17746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* already deleted */ 17756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 17766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 17776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tteno < N_TTES_PER_SECTOR); 17796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[tteno]; 17816c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(tte->status == InUse); 17826c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17836c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (overlaps( guest_start, range, &tte->vge )) { 17846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeld = True; 1785291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj delete_tte( sec, secNo, (Int)tteno, vex_arch ); 17866c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 17876c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 17896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return anyDeld; 17916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 17926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj/* Delete translations from sec which intersect specified range, the 17956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj slow way, by inspecting all translations in sec. */ 17966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 17976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardjstatic 1798291849fb0285e0998b4c9e33eb153eb3373c4a88sewardjBool delete_translations_in_sector ( /*MOD*/Sector* sec, UInt secNo, 1799291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj Addr64 guest_start, ULong range, 1800291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch vex_arch ) 18016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj{ 18026c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 18036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool anyDeld = False; 18046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18056c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 18066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tt[i].status == InUse 18076c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj && overlaps( guest_start, range, &sec->tt[i].vge )) { 18086c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeld = True; 1809291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj delete_tte( sec, secNo, i, vex_arch ); 18106c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 18116c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 18126c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return anyDeld; 18146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj} 18156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 181745f4e7c91119c7d01a59f5e827c67841632c9314sewardjvoid VG_(discard_translations) ( Addr64 guest_start, ULong range, 18181636d33c13958b9c0e7d3059cdd5005746418eb2florian const HChar* who ) 18196c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 18206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Sector* sec; 18216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int sno, ec; 18226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool anyDeleted = False; 18236c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 1824663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(init_done); 1825663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 1826a16ea0a5fa05dac343e63feddf63f51cb0c340bdsewardj VG_(debugLog)(2, "transtab", 182745f4e7c91119c7d01a59f5e827c67841632c9314sewardj "discard_translations(0x%llx, %lld) req by %s\n", 182845f4e7c91119c7d01a59f5e827c67841632c9314sewardj guest_start, range, who ); 182945f4e7c91119c7d01a59f5e827c67841632c9314sewardj 18306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Pre-deletion sanity check */ 18316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (VG_(clo_sanity_level >= 4)) { 18326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool sane = sanity_check_all_sectors(); 18336c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sane); 18346c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 18356c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18366c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (range == 0) 18376c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj return; 18386c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1839291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VexArch vex_arch = VexArch_INVALID; 1840291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(machine_get_VexArchInfo)( &vex_arch, NULL ); 1841291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj 18426c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* There are two different ways to do this. 18436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj If the range fits within a single address-range equivalence 18456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj class, as will be the case for a cache line sized invalidation, 18466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj then we only have to inspect the set of translations listed in 18476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj that equivalence class, and also in the "sin-bin" equivalence 18486c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj class ECLASS_MISC. 18496c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18506c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Otherwise, the invalidation is of a larger range and probably 18516c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj results from munmap. In this case it's (probably!) faster just 18526c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj to inspect all translations, dump those we don't want, and 18536c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj regenerate the equivalence class information (since modifying it 18546c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj in-situ is even more expensive). 18556c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj */ 18566c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18576c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* First off, figure out if the range falls within a single class, 18586c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj and if so which one. */ 18596c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18606c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec = ECLASS_MISC; 18616c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (range < (1ULL << ECLASS_SHIFT)) 18626c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj ec = range_to_eclass( guest_start, (UInt)range ); 18636c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18646c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* if ec is ECLASS_MISC then we aren't looking at just a single 18656c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj class, so use the slow scheme. Else use the fast scheme, 18666c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj examining 'ec' and ECLASS_MISC. */ 18676c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18686c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (ec != ECLASS_MISC) { 18696c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18706c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(debugLog)(2, "transtab", 18716c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj " FAST, ec = %d\n", ec); 18726c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18736c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Fast scheme */ 18746c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(ec >= 0 && ec < ECLASS_MISC); 18756c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18766c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 18776c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 18786c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 18796c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 18806c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeleted |= delete_translations_in_sector_eclass( 1881291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sec, sno, guest_start, range, ec, 1882291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vex_arch 1883291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ); 18846c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeleted |= delete_translations_in_sector_eclass( 1885291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sec, sno, guest_start, range, ECLASS_MISC, 1886291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj vex_arch 1887291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj ); 18886c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 18896c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18906c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } else { 18916c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18926c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* slow scheme */ 18936c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18946c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(debugLog)(2, "transtab", 18956c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj " SLOW, ec = %d\n", ec); 18966c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 18976c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 18986c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 18996c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 19006c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 19016c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj anyDeleted |= delete_translations_in_sector( 1902291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sec, sno, guest_start, range, vex_arch ); 19036c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 19046c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 1905de4a1d01951937632098a6cda45859afa587a06fsewardj } 1906de4a1d01951937632098a6cda45859afa587a06fsewardj 1907fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (anyDeleted) 1908fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidateFastCache(); 19096c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 19100ec07f32bbbb209d749b9974408e6f025ad40b31sewardj /* don't forget the no-redir cache */ 19110ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_discard_translations( guest_start, range ); 19120ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19136c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* Post-deletion sanity check */ 19146c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (VG_(clo_sanity_level >= 4)) { 19156c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 19166c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj TTEntry* tte; 19176c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Bool sane = sanity_check_all_sectors(); 19186c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(sane); 19196c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj /* But now, also check the requested address range isn't 19206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj present anywhere. */ 19216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (sno = 0; sno < N_SECTORS; sno++) { 19226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sec = §ors[sno]; 19236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (sec->tc == NULL) 19246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 19256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 19266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj tte = &sec->tt[i]; 19276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (tte->status != InUse) 19286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj continue; 19296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj vg_assert(!overlaps( guest_start, range, &tte->vge )); 19306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 19316c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 19326c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 1933fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj} 19346c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 19356c3769f487145a08c01b58d6e5db3ba274062ad4sewardj 1936fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 19370ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/*--- AUXILIARY: the unredirected TT/TC ---*/ 19380ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/*------------------------------------------------------------*/ 19390ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19400ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* A very simple translation cache which holds a small number of 19410ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredirected translations. This is completely independent of the 19420ec07f32bbbb209d749b9974408e6f025ad40b31sewardj main tt/tc structures. When unredir_tc or unredir_tt becomes full, 19430ec07f32bbbb209d749b9974408e6f025ad40b31sewardj both structures are simply dumped and we start over. 19440ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19450ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Since these translations are unredirected, the search key is (by 19460ec07f32bbbb209d749b9974408e6f025ad40b31sewardj definition) the first address entry in the .vge field. */ 19470ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19480ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* Sized to hold 500 translations of average size 1000 bytes. */ 19490ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19500ec07f32bbbb209d749b9974408e6f025ad40b31sewardj#define UNREDIR_SZB 1000 19510ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19520ec07f32bbbb209d749b9974408e6f025ad40b31sewardj#define N_UNREDIR_TT 500 19530ec07f32bbbb209d749b9974408e6f025ad40b31sewardj#define N_UNREDIR_TCQ (N_UNREDIR_TT * UNREDIR_SZB / sizeof(ULong)) 19540ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19550ec07f32bbbb209d749b9974408e6f025ad40b31sewardjtypedef 19560ec07f32bbbb209d749b9974408e6f025ad40b31sewardj struct { 19570ec07f32bbbb209d749b9974408e6f025ad40b31sewardj VexGuestExtents vge; 19580ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Addr hcode; 19590ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Bool inUse; 19600ec07f32bbbb209d749b9974408e6f025ad40b31sewardj } 19610ec07f32bbbb209d749b9974408e6f025ad40b31sewardj UTCEntry; 19620ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19630ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* We just allocate forwards in _tc, never deleting. */ 196478c0c09d429c95115e826ef769ecaa6cff2ac338tomstatic ULong *unredir_tc; 196578c0c09d429c95115e826ef769ecaa6cff2ac338tomstatic Int unredir_tc_used = N_UNREDIR_TCQ; 19660ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19670ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* Slots in _tt can come into use and out again (.inUse). 19680ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Nevertheless _tt_highwater is maintained so that invalidations 19690ec07f32bbbb209d749b9974408e6f025ad40b31sewardj don't have to scan all the slots when only a few are in use. 19700ec07f32bbbb209d749b9974408e6f025ad40b31sewardj _tt_highwater holds the index of the highest ever allocated 19710ec07f32bbbb209d749b9974408e6f025ad40b31sewardj slot. */ 19720ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic UTCEntry unredir_tt[N_UNREDIR_TT]; 19730ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic Int unredir_tt_highwater; 19740ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19750ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19760ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic void init_unredir_tt_tc ( void ) 19770ec07f32bbbb209d749b9974408e6f025ad40b31sewardj{ 19780ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Int i; 197978c0c09d429c95115e826ef769ecaa6cff2ac338tom if (unredir_tc == NULL) { 1980cda2f0fbda4c4b2644babc830244be8aed95de1dnjn SysRes sres = VG_(am_mmap_anon_float_valgrind) 1981cda2f0fbda4c4b2644babc830244be8aed95de1dnjn ( N_UNREDIR_TT * UNREDIR_SZB ); 1982cda2f0fbda4c4b2644babc830244be8aed95de1dnjn if (sr_isError(sres)) { 1983cda2f0fbda4c4b2644babc830244be8aed95de1dnjn VG_(out_of_memory_NORETURN)("init_unredir_tt_tc", 1984cda2f0fbda4c4b2644babc830244be8aed95de1dnjn N_UNREDIR_TT * UNREDIR_SZB); 198578c0c09d429c95115e826ef769ecaa6cff2ac338tom /*NOTREACHED*/ 198678c0c09d429c95115e826ef769ecaa6cff2ac338tom } 1987cda2f0fbda4c4b2644babc830244be8aed95de1dnjn unredir_tc = (ULong *)(AddrH)sr_Res(sres); 198878c0c09d429c95115e826ef769ecaa6cff2ac338tom } 19890ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tc_used = 0; 19900ec07f32bbbb209d749b9974408e6f025ad40b31sewardj for (i = 0; i < N_UNREDIR_TT; i++) 19910ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt[i].inUse = False; 19920ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt_highwater = -1; 19930ec07f32bbbb209d749b9974408e6f025ad40b31sewardj} 19940ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 19950ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* Do a sanity check; return False on failure. */ 19960ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic Bool sanity_check_redir_tt_tc ( void ) 19970ec07f32bbbb209d749b9974408e6f025ad40b31sewardj{ 19980ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Int i; 19990ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tt_highwater < -1) return False; 20000ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tt_highwater >= N_UNREDIR_TT) return False; 20010ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20020ec07f32bbbb209d749b9974408e6f025ad40b31sewardj for (i = unredir_tt_highwater+1; i < N_UNREDIR_TT; i++) 20030ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tt[i].inUse) 20040ec07f32bbbb209d749b9974408e6f025ad40b31sewardj return False; 20050ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20060ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tc_used < 0) return False; 20070ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tc_used > N_UNREDIR_TCQ) return False; 20080ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20090ec07f32bbbb209d749b9974408e6f025ad40b31sewardj return True; 20100ec07f32bbbb209d749b9974408e6f025ad40b31sewardj} 20110ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20120ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20130ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/* Add an UNREDIRECTED translation of vge to TT/TC. The translation 20140ec07f32bbbb209d749b9974408e6f025ad40b31sewardj is temporarily in code[0 .. code_len-1]. 20150ec07f32bbbb209d749b9974408e6f025ad40b31sewardj*/ 20160ec07f32bbbb209d749b9974408e6f025ad40b31sewardjvoid VG_(add_to_unredir_transtab)( VexGuestExtents* vge, 20170ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Addr64 entry, 20180ec07f32bbbb209d749b9974408e6f025ad40b31sewardj AddrH code, 20191dcee097db02f9ef3ba355162c4373d90d0e895cnjn UInt code_len ) 20200ec07f32bbbb209d749b9974408e6f025ad40b31sewardj{ 20210ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Int i, j, code_szQ; 20220ec07f32bbbb209d749b9974408e6f025ad40b31sewardj HChar *srcP, *dstP; 20230ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20240ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(sanity_check_redir_tt_tc()); 20250ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20260ec07f32bbbb209d749b9974408e6f025ad40b31sewardj /* This is the whole point: it's not redirected! */ 20270ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(entry == vge->base[0]); 20280ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20290ec07f32bbbb209d749b9974408e6f025ad40b31sewardj /* How many unredir_tt slots are needed */ 20300ec07f32bbbb209d749b9974408e6f025ad40b31sewardj code_szQ = (code_len + 7) / 8; 20310ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20320ec07f32bbbb209d749b9974408e6f025ad40b31sewardj /* Look for an empty unredir_tc slot */ 20330ec07f32bbbb209d749b9974408e6f025ad40b31sewardj for (i = 0; i < N_UNREDIR_TT; i++) 20340ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (!unredir_tt[i].inUse) 20350ec07f32bbbb209d749b9974408e6f025ad40b31sewardj break; 20360ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20370ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (i >= N_UNREDIR_TT || code_szQ > (N_UNREDIR_TCQ - unredir_tc_used)) { 20380ec07f32bbbb209d749b9974408e6f025ad40b31sewardj /* It's full; dump everything we currently have */ 20390ec07f32bbbb209d749b9974408e6f025ad40b31sewardj init_unredir_tt_tc(); 20400ec07f32bbbb209d749b9974408e6f025ad40b31sewardj i = 0; 20410ec07f32bbbb209d749b9974408e6f025ad40b31sewardj } 20420ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20430ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(unredir_tc_used >= 0); 20440ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(unredir_tc_used <= N_UNREDIR_TCQ); 20450ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(code_szQ > 0); 20460ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(code_szQ + unredir_tc_used <= N_UNREDIR_TCQ); 20470ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(i >= 0 && i < N_UNREDIR_TT); 20480ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(unredir_tt[i].inUse == False); 20490ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20500ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (i > unredir_tt_highwater) 20510ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt_highwater = i; 20520ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20530ec07f32bbbb209d749b9974408e6f025ad40b31sewardj dstP = (HChar*)&unredir_tc[unredir_tc_used]; 20540ec07f32bbbb209d749b9974408e6f025ad40b31sewardj srcP = (HChar*)code; 20550ec07f32bbbb209d749b9974408e6f025ad40b31sewardj for (j = 0; j < code_len; j++) 20560ec07f32bbbb209d749b9974408e6f025ad40b31sewardj dstP[j] = srcP[j]; 20570ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 2058291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj VG_(invalidate_icache)( dstP, code_len ); 2059c0a02f88a9b5ca7cebebf67e1f2f5ebcadb1e238sewardj 20600ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt[i].inUse = True; 20610ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt[i].vge = *vge; 20620ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt[i].hcode = (Addr)dstP; 20630ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20640ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tc_used += code_szQ; 20650ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(unredir_tc_used >= 0); 20660ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(unredir_tc_used <= N_UNREDIR_TCQ); 20670ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20680ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(&dstP[code_len] <= (HChar*)&unredir_tc[unredir_tc_used]); 20690ec07f32bbbb209d749b9974408e6f025ad40b31sewardj} 20700ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20710ec07f32bbbb209d749b9974408e6f025ad40b31sewardjBool VG_(search_unredir_transtab) ( /*OUT*/AddrH* result, 20720ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Addr64 guest_addr ) 20730ec07f32bbbb209d749b9974408e6f025ad40b31sewardj{ 20740ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Int i; 20750ec07f32bbbb209d749b9974408e6f025ad40b31sewardj for (i = 0; i < N_UNREDIR_TT; i++) { 20760ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (!unredir_tt[i].inUse) 20770ec07f32bbbb209d749b9974408e6f025ad40b31sewardj continue; 20780ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tt[i].vge.base[0] == guest_addr) { 20790ec07f32bbbb209d749b9974408e6f025ad40b31sewardj *result = (AddrH)unredir_tt[i].hcode; 20800ec07f32bbbb209d749b9974408e6f025ad40b31sewardj return True; 20810ec07f32bbbb209d749b9974408e6f025ad40b31sewardj } 20820ec07f32bbbb209d749b9974408e6f025ad40b31sewardj } 20830ec07f32bbbb209d749b9974408e6f025ad40b31sewardj return False; 20840ec07f32bbbb209d749b9974408e6f025ad40b31sewardj} 20850ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20860ec07f32bbbb209d749b9974408e6f025ad40b31sewardjstatic void unredir_discard_translations( Addr64 guest_start, ULong range ) 20870ec07f32bbbb209d749b9974408e6f025ad40b31sewardj{ 20880ec07f32bbbb209d749b9974408e6f025ad40b31sewardj Int i; 20890ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20900ec07f32bbbb209d749b9974408e6f025ad40b31sewardj vg_assert(sanity_check_redir_tt_tc()); 20910ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20920ec07f32bbbb209d749b9974408e6f025ad40b31sewardj for (i = 0; i <= unredir_tt_highwater; i++) { 20930ec07f32bbbb209d749b9974408e6f025ad40b31sewardj if (unredir_tt[i].inUse 20940ec07f32bbbb209d749b9974408e6f025ad40b31sewardj && overlaps( guest_start, range, &unredir_tt[i].vge)) 20950ec07f32bbbb209d749b9974408e6f025ad40b31sewardj unredir_tt[i].inUse = False; 20960ec07f32bbbb209d749b9974408e6f025ad40b31sewardj } 20970ec07f32bbbb209d749b9974408e6f025ad40b31sewardj} 20980ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 20990ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 21000ec07f32bbbb209d749b9974408e6f025ad40b31sewardj/*------------------------------------------------------------*/ 2101fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*--- Initialisation. ---*/ 2102fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 2103fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2104fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjvoid VG_(init_tt_tc) ( void ) 21056c3769f487145a08c01b58d6e5db3ba274062ad4sewardj{ 21066c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i, j, avg_codeszQ; 2107de4a1d01951937632098a6cda45859afa587a06fsewardj 2108663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj vg_assert(!init_done); 2109663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj init_done = True; 2110663a1bd7a8def9d4ef4a10615732a15cc9b09171sewardj 2111fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Otherwise lots of things go wrong... */ 2112fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sizeof(ULong) == 8); 2113fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(sizeof(Addr64) == 8); 21145f76de086a6d643db51e50a4e623df7dfc9b6161sewardj /* check fast cache entries really are 2 words long */ 21155f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(sizeof(Addr) == sizeof(void*)); 21165f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(sizeof(FastCacheEntry) == 2 * sizeof(Addr)); 21175f76de086a6d643db51e50a4e623df7dfc9b6161sewardj /* check fast cache entries are packed back-to-back with no spaces */ 21185f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(sizeof( VG_(tt_fast) ) == VG_TT_FAST_SIZE * sizeof(FastCacheEntry)); 21195f76de086a6d643db51e50a4e623df7dfc9b6161sewardj /* check fast cache is aligned as we requested. Not fatal if it 21205f76de086a6d643db51e50a4e623df7dfc9b6161sewardj isn't, but we might as well make sure. */ 21215f76de086a6d643db51e50a4e623df7dfc9b6161sewardj vg_assert(VG_IS_16_ALIGNED( ((Addr) & VG_(tt_fast)[0]) )); 2122de4a1d01951937632098a6cda45859afa587a06fsewardj 2123fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) 2124fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 2125fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj "TT/TC: VG_(init_tt_tc) " 2126738856f99eea33d86ce91dcb1d6cd5b151e307casewardj "(startup of code management)\n"); 2127fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2128fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Figure out how big each tc area should be. */ 212943b9a8abb139b86a24457fa3c19b9cb60ca17c3anjn avg_codeszQ = (VG_(details).avg_translation_sizeB + 7) / 8; 213043b9a8abb139b86a24457fa3c19b9cb60ca17c3anjn tc_sector_szQ = N_TTES_PER_SECTOR_USABLE * (1 + avg_codeszQ); 2131fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2132fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Ensure the calculated value is not way crazy. */ 2133fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj vg_assert(tc_sector_szQ >= 2 * N_TTES_PER_SECTOR_USABLE); 21341e0fff690e9c571275e8025eb2dcff7bf29b53afsewardj vg_assert(tc_sector_szQ <= 100 * N_TTES_PER_SECTOR_USABLE); 2135fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2136fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Initialise the sectors */ 2137fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj youngest_sector = 0; 2138fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_SECTORS; i++) { 2139fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tc = NULL; 2140fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tt = NULL; 2141fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tc_next = NULL; 2142fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj sectors[i].tt_n_inuse = 0; 21436c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (j = 0; j < ECLASS_N; j++) { 21446c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sectors[i].ec2tte_size[j] = 0; 21456c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sectors[i].ec2tte_used[j] = 0; 21466c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj sectors[i].ec2tte[j] = NULL; 21476c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 2148291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj sectors[i].host_extents = NULL; 21496c3769f487145a08c01b58d6e5db3ba274062ad4sewardj } 21504ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 21515d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj /* Initialise the sector_search_order hint table. */ 21525d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj for (i = 0; i < N_SECTORS; i++) 21535d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj sector_search_order[i] = -1; 21545d0d1f3a78d6c5c765360982a08d87a068ce7f1csewardj 2155291849fb0285e0998b4c9e33eb153eb3373c4a88sewardj /* Initialise the fast cache. */ 2156fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj invalidateFastCache(); 2157fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 21580ec07f32bbbb209d749b9974408e6f025ad40b31sewardj /* and the unredir tt/tc */ 21590ec07f32bbbb209d749b9974408e6f025ad40b31sewardj init_unredir_tt_tc(); 21600ec07f32bbbb209d749b9974408e6f025ad40b31sewardj 2161fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (VG_(clo_verbosity) > 2) { 2162fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 2163738856f99eea33d86ce91dcb1d6cd5b151e307casewardj "TT/TC: cache: %d sectors of %d bytes each = %d total\n", 2164fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS, 8 * tc_sector_szQ, 2165fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS * 8 * tc_sector_szQ ); 2166fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 2167738856f99eea33d86ce91dcb1d6cd5b151e307casewardj "TT/TC: table: %d total entries, max occupancy %d (%d%%)\n", 2168fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS * N_TTES_PER_SECTOR, 2169fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj N_SECTORS * N_TTES_PER_SECTOR_USABLE, 2170fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj SECTOR_TT_LIMIT_PERCENT ); 2171fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 217245f4e7c91119c7d01a59f5e827c67841632c9314sewardj 217345f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(2, "transtab", 217445f4e7c91119c7d01a59f5e827c67841632c9314sewardj "cache: %d sectors of %d bytes each = %d total\n", 217545f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS, 8 * tc_sector_szQ, 217645f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS * 8 * tc_sector_szQ ); 217745f4e7c91119c7d01a59f5e827c67841632c9314sewardj VG_(debugLog)(2, "transtab", 217845f4e7c91119c7d01a59f5e827c67841632c9314sewardj "table: %d total entries, max occupancy %d (%d%%)\n", 217945f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS * N_TTES_PER_SECTOR, 218045f4e7c91119c7d01a59f5e827c67841632c9314sewardj N_SECTORS * N_TTES_PER_SECTOR_USABLE, 218145f4e7c91119c7d01a59f5e827c67841632c9314sewardj SECTOR_TT_LIMIT_PERCENT ); 2182de4a1d01951937632098a6cda45859afa587a06fsewardj} 2183de4a1d01951937632098a6cda45859afa587a06fsewardj 21844ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 2185fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 2186fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*--- Printing out statistics. ---*/ 2187fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 2188fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2189fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic ULong safe_idiv( ULong a, ULong b ) 219092e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote{ 219192e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote return (b == 0 ? 0 : a / b); 219292e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote} 219392e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote 2194fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjUInt VG_(get_bbs_translated) ( void ) 2195fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj{ 2196fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return n_in_count; 2197fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj} 2198fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2199fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjvoid VG_(print_tt_tc_stats) ( void ) 220092e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote{ 220192e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 2202738856f99eea33d86ce91dcb1d6cd5b151e307casewardj " tt/tc: %'llu tt lookups requiring %'llu probes\n", 2203fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_full_lookups, n_lookup_probes ); 220492e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 2205738856f99eea33d86ce91dcb1d6cd5b151e307casewardj " tt/tc: %'llu fast-cache updates, %'llu flushes\n", 2206fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_fast_updates, n_fast_flushes ); 2207fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 220892e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 2209a0b6b2cf9abc7b0d87be1215a245eaccc0452af9bart " transtab: new %'lld " 2210738856f99eea33d86ce91dcb1d6cd5b151e307casewardj "(%'llu -> %'llu; ratio %'llu:10) [%'llu scs]\n", 2211fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_in_count, n_in_osize, n_in_tsize, 221226412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj safe_idiv(10*n_in_tsize, n_in_osize), 221326412bd2c4ef3e55683141f132ebd1eb32d8530bsewardj n_in_sc_count); 221492e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote VG_(message)(Vg_DebugMsg, 2215738856f99eea33d86ce91dcb1d6cd5b151e307casewardj " transtab: dumped %'llu (%'llu -> ?" "?)\n", 2216fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_dump_count, n_dump_osize ); 2217fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj VG_(message)(Vg_DebugMsg, 2218738856f99eea33d86ce91dcb1d6cd5b151e307casewardj " transtab: discarded %'llu (%'llu -> ?" "?)\n", 2219fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj n_disc_count, n_disc_osize ); 22206c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj 22216c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (0) { 22226c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj Int i; 22236c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("\n"); 22246c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj for (i = 0; i < ECLASS_N; i++) { 22256c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)(" %4d", sectors[0].ec2tte_used[i]); 22266c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj if (i % 16 == 15) 22276c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("\n"); 22286c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 22296c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj VG_(printf)("\n\n"); 22306c1bbbb1799cc34d05e2c1bae06f5533151eaaa3sewardj } 223192e7b7f3d93564e293483fcf0f52f2d6f6c6dcc0nethercote} 2232de4a1d01951937632098a6cda45859afa587a06fsewardj 2233fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 2234fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*--- Printing out of profiling results. ---*/ 2235fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj/*------------------------------------------------------------*/ 22364ccf707a1b52898b878fc90dc0054a0c23cc9fccsewardj 2237fa8ec113ecff891bdefb13dd361b40a503a992f8sewardjstatic ULong score ( TTEntry* tte ) 2238fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj{ 2239fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj return ((ULong)tte->weight) * ((ULong)tte->count); 2240de4a1d01951937632098a6cda45859afa587a06fsewardj} 2241de4a1d01951937632098a6cda45859afa587a06fsewardj 22422025cf98a3210c175a90fc77cb599cca1643bd68njnULong VG_(get_BB_profile) ( BBProfEntry tops[], UInt n_tops ) 2243de4a1d01951937632098a6cda45859afa587a06fsewardj{ 2244fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj Int sno, i, r, s; 22452025cf98a3210c175a90fc77cb599cca1643bd68njn ULong score_total; 2246fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2247fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* First, compute the total weighted count, and find the top N 22482025cf98a3210c175a90fc77cb599cca1643bd68njn ttes. tops contains pointers to the most-used n_tops blocks, in 2249fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj descending order (viz, tops[0] is the highest scorer). */ 22502025cf98a3210c175a90fc77cb599cca1643bd68njn for (i = 0; i < n_tops; i++) { 22512025cf98a3210c175a90fc77cb599cca1643bd68njn tops[i].addr = 0; 22522025cf98a3210c175a90fc77cb599cca1643bd68njn tops[i].score = 0; 22532025cf98a3210c175a90fc77cb599cca1643bd68njn } 2254fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2255fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj score_total = 0; 2256fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj 2257fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (sno = 0; sno < N_SECTORS; sno++) { 2258fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tc == NULL) 225918d7513cc08bf982711c8a22b70d56af6aa87b33sewardj continue; 2260fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj for (i = 0; i < N_TTES_PER_SECTOR; i++) { 2261fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (sectors[sno].tt[i].status != InUse) 2262fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj continue; 2263fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj score_total += score(§ors[sno].tt[i]); 2264fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* Find the rank for sectors[sno].tt[i]. */ 22652025cf98a3210c175a90fc77cb599cca1643bd68njn r = n_tops-1; 2266fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj while (True) { 2267fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj if (r == -1) 2268fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; 22692025cf98a3210c175a90fc77cb599cca1643bd68njn if (tops[r].addr == 0) { 2270fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj r--; 2271fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj continue; 2272fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 22732025cf98a3210c175a90fc77cb599cca1643bd68njn if ( score(§ors[sno].tt[i]) > tops[r].score ) { 2274fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj r--; 2275fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj continue; 2276fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 2277fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj break; 2278fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 2279fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj r++; 22802025cf98a3210c175a90fc77cb599cca1643bd68njn vg_assert(r >= 0 && r <= n_tops); 2281fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj /* This bb should be placed at r, and bbs above it shifted 2282fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj upwards one slot. */ 22832025cf98a3210c175a90fc77cb599cca1643bd68njn if (r < n_tops) { 22842025cf98a3210c175a90fc77cb599cca1643bd68njn for (s = n_tops-1; s > r; s--) 2285fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj tops[s] = tops[s-1]; 22862025cf98a3210c175a90fc77cb599cca1643bd68njn tops[r].addr = sectors[sno].tt[i].entry; 22872025cf98a3210c175a90fc77cb599cca1643bd68njn tops[r].score = score( §ors[sno].tt[i] ); 2288fa8ec113ecff891bdefb13dd361b40a503a992f8sewardj } 2289de4a1d01951937632098a6cda45859afa587a06fsewardj } 2290de4a1d01951937632098a6cda45859afa587a06fsewardj } 2291de4a1d01951937632098a6cda45859afa587a06fsewardj 22922025cf98a3210c175a90fc77cb599cca1643bd68njn return score_total; 2293c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj} 2294c0d8f68810eb79a5a6cb6049d6a4ab1de7dc4e18sewardj 2295de4a1d01951937632098a6cda45859afa587a06fsewardj/*--------------------------------------------------------------------*/ 22968bddf58af8cc7342d4bde6712c5a6a33bf2850d4njn/*--- end ---*/ 2297de4a1d01951937632098a6cda45859afa587a06fsewardj/*--------------------------------------------------------------------*/ 2298