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ppsspp/Core/MIPS/MIPSAnalyst.cpp
daniel229 f1669a3077 Functions replace
2015-01-20 09:06:08 +08:00

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// Copyright (c) 2012- PPSSPP Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
#include <map>
#include <unordered_map>
#include <set>
#include "base/mutex.h"
#include "ext/cityhash/city.h"
#include "Common/FileUtil.h"
#include "Core/Config.h"
#include "Core/MemMap.h"
#include "Core/System.h"
#include "Core/MIPS/MIPS.h"
#include "Core/MIPS/MIPSTables.h"
#include "Core/MIPS/MIPSAnalyst.h"
#include "Core/MIPS/MIPSCodeUtils.h"
#include "Core/Debugger/SymbolMap.h"
#include "Core/Debugger/DebugInterface.h"
#include "Core/HLE/ReplaceTables.h"
#include "ext/xxhash.h"
using namespace MIPSCodeUtils;
// Not in a namespace because MSVC's debugger doesn't like it
typedef std::vector<MIPSAnalyst::AnalyzedFunction> FunctionsVector;
static FunctionsVector functions;
recursive_mutex functions_lock;
// One function can appear in multiple copies in memory, and they will all have
// the same hash and should all be replaced if possible.
#ifdef __SYMBIAN32__
// Symbian does not have a functional unordered_multimap.
static std::multimap<u64, MIPSAnalyst::AnalyzedFunction *> hashToFunction;
#else
static std::unordered_multimap<u64, MIPSAnalyst::AnalyzedFunction *> hashToFunction;
#endif
struct HashMapFunc {
char name[64];
u64 hash;
u32 size; //number of bytes
bool hardcoded; // should not be saved
bool operator < (const HashMapFunc &other) const {
return hash < other.hash || (hash == other.hash && size < other.size);
}
};
static std::set<HashMapFunc> hashMap;
static std::string hashmapFileName;
#define MIPSTABLE_IMM_MASK 0xFC000000
// Similar to HashMapFunc but has a char pointer for the name for efficiency.
struct HardHashTableEntry {
uint64_t hash;
int funcSize;
const char *funcName;
bool operator <(const HardHashTableEntry &e) const {
if (hash < e.hash) return true;
if (hash > e.hash) return false;
return funcSize < e.funcSize;
}
};
// Some hardcoded hashes. Some have a comment specifying at least one game they are found in.
static const HardHashTableEntry hardcodedHashes[] = {
{ 0x006b570008068310, 184, "strtok_r", },
{ 0x019ba2099fb88f3c, 48, "vector_normalize_t", },
{ 0x0266f96d740c7e03, 912, "memcpy", }, // Final Fantasy 4 (US)
{ 0x02bd2859045d2383, 240, "bcmp", },
{ 0x030507c9a1f0fc85, 92, "matrix_rot_x", },
{ 0x0483fceefa4557ff, 1360, "__udivdi3", },
{ 0x0558ad5c5be00ca1, 76, "vtfm_t", },
{ 0x05aedd0c04b451a1, 356, "sqrt", },
{ 0x0654fc8adbe16ef7, 28, "vmul_q", },
{ 0x06628f6052cda3c1, 1776, "toheart2_download_frame", }, // To Heart 2 Portable
{ 0x06b243c926fa6ab5, 24, "vf2in_q", },
{ 0x06e2826e02056114, 56, "wcslen", },
{ 0x073cf0b61d3b875a, 416, "hexyzforce_monoclome_thread", }, // Hexyz Force (US)
{ 0x075fa9b234b41e9b, 32, "fmodf", },
{ 0x0a051019bdd786c3, 184, "strcasecmp", },
{ 0x0a46dc426054bb9d, 24, "vector_add_t", },
{ 0x0c0173ed70f84f66, 48, "vnormalize_t", },
{ 0x0c65188f5bfb3915, 24, "vsgn_q", },
{ 0x0d898513a722ea3c, 40, "copysignf", },
{ 0x0e99b037b852c8ea, 68, "isnan", },
// Unsafe due to immediates.
//{ 0x0eb5f2e95f59276a, 40, "dl_write_lightmode", },
{ 0x0f1e7533a546f6a1, 228, "dl_write_bone_matrix_4", },
{ 0x0f2a1106ad84fb74, 52, "strcmp", },
{ 0x0ffa5db8396d4274, 64, "memcpy", }, // CRUSH
{ 0x1252e902d0b49bfb, 44, "vector_sub_q_2", },
{ 0x12df3d33a58d0298, 52, "vmidt_t", },
{ 0x12feef7b017d3431, 700, "memmove", },
{ 0x1322c7e3fe6dff4d, 784, "_free_r", },
{ 0x1376c115d5f1d90c, 36, "strlen", },
{ 0x1448134dd3acd1f9, 240, "memchr", },
{ 0x14800e59c04968d7, 100, "wcsstr", },
{ 0x14b56e858a27a8a4, 24, "vi2f_q", },
{ 0x15c4662d5d3c728e, 308, "acosf", },
{ 0x1616ee7052542059, 48, "vtfm_t", },
{ 0x16965ca11a4e7dac, 104, "vmmul_q_transp", },
{ 0x16afe830a5dd2de2, 40, "vdiv_q", },
{ 0x184e834a63a79016, 32, "isnanf", },
{ 0x1874ee898c7b9f16, 512, "kokoroconnect_download_frame", }, // Kokoro Connect Yochi Random
{ 0x189212bda9c94df1, 736, "atanf", },
{ 0x199821ce500ef9d2, 24, "vocp_t", },
{ 0x1a3c8e9d637ed421, 104, "__adddf3", },
{ 0x1a7564fa3e25c992, 844, "memcpy", }, // Valkyria Chronicles 3
{ 0x1aad94c0723edfc0, 124, "vmmul_t_transp", },
{ 0x1ab33b12b3cb8cb0, 28, "vqmul_q", },
{ 0x1ac05627df1f87f4, 112, "memcpy16", }, // Valkyria Chronicles 3
{ 0x1bdf3600844373fd, 112, "strstr", },
{ 0x1c967be07917ddc9, 92, "strcat", },
{ 0x1d03fa48334ca966, 556, "_strtol_r", },
{ 0x1d1311966d2243e9, 428, "suikoden1_and_2_download_frame_1", }, // Gensou Suikoden 1&2
{ 0x1d7de04b4e87d00b, 680, "kankabanchoutbr_download_frame", }, // Kenka Banchou Bros: Tokyo Battle Royale
{ 0x1daf6eaf0442391d, 1024, "utawarerumono_download_frame", }, // Utawarerumono portable
{ 0x1e1525e3bc2f6703, 676, "rint", },
{ 0x1ec055f28bb9f4d1, 88, "gu_update_stall", },
{ 0x1ef9cfe6afd3c035, 180, "memset", }, // Kingdom Hearts (US)
{ 0x1f53eac122f96b37, 224, "cosf", },
{ 0x2097a8b75c8fe651, 436, "atan2", },
{ 0x21411b3c860822c0, 36, "matrix_scale_q_t", },
{ 0x24d82a8675800808, 220, "ceilf", },
{ 0x26cc90cb25af9d27, 476, "log10", },
{ 0x275c79791a2bab83, 116, "rezel_cross_download_frame", }, // Rezel Cross
{ 0x2774614d57d4baa2, 28, "vsub_q", },
{ 0x279c6bf9cf99cc85, 436, "strncpy", },
{ 0x2876ed93c5fd1211, 328, "dl_write_matrix_4", },
{ 0x2965b1ad3ca15cc1, 44, "vtfm_t", },
{ 0x299a370587df078f, 116, "strange_copy_routine", },
{ 0x2abca53599f09ea7, 608, "dl_write_matrix_3", },
{ 0x2adb92e8855c454e, 48, "vtfm_q", },
{ 0x2adc229bef7bbc75, 40, "isnan", },
{ 0x2bcf5268dd26345a, 340, "acos", },
{ 0x2c4cb2028a1735bf, 600, "floor", },
{ 0x2c61a9a06a345b43, 1084, "otomenoheihou_download_frame", }, // Sangoku Koi Senki Otome no Heihou
{ 0x2ca5958bb816c72e, 44, "vector_i2f_t", },
{ 0x2e7022d9767c9018, 2100, "atan", },
{ 0x2f10d3faec84b5bb, 276, "sinf", },
{ 0x2f639673670caa0e, 772, "dl_write_matrix_2", },
{ 0x2f718936b371fc44, 40, "vcos_s", },
{ 0x3024e961d1811dea, 396, "fmod", },
{ 0x30c9c4f420573eb6, 540, "expf", },
{ 0x317afeb882ff324a, 212, "memcpy", }, // Mimana (US)
{ 0x31ea2e192f5095a1, 52, "vector_add_t", },
{ 0x31f523ef18898e0e, 420, "logf", },
{ 0x32215b1d2196377f, 844, "godseaterburst_blit_texture", }, // Gods Eater Burst (US)
{ 0x32806967fe81568b, 40, "vector_sub_t_2", },
{ 0x32ceb9a7f72b9385, 440, "_strtoul_r", },
{ 0x32e6bc7c151491ed, 68, "memchr", },
{ 0x335df69db1073a8d, 96, "wcscpy", },
{ 0x33dc6b144cb302c1, 304, "memmove", }, // Kingdom Hearts (US)
{ 0x35d3527ff8c22ff2, 56, "matrix_scale_q", },
{ 0x368f6cf979709a31, 744, "memmove", }, // Jui Dr. Touma Jotarou
{ 0x373ce518eee5a2d2, 20, "matrix300_store_q", },
{ 0x3840f5766fada4b1, 592, "dissidia_recordframe_avi", }, // Dissidia (US), Dissidia 012 (US)
{ 0x388043e96b0e11fd, 144, "dl_write_material_2", },
{ 0x38f19bc3be215acc, 388, "log10f", },
{ 0x393047f06eceaba1, 96, "strcspn", },
{ 0x39a651942a0b3861, 204, "tan", },
{ 0x3a3bc2b20a55bf02, 68, "memchr", },
{ 0x3ab08b5659de1746, 40, "vsin_s", },
{ 0x3c421a9265f37ebc, 700, "memmove", }, // Final Fantasy 4 (US)
{ 0x3cbc2d50a3db59e9, 100, "strncmp", },
{ 0x3ce1806699a91d9d, 148, "dl_write_light", },
{ 0x3d5e914011c181d4, 444, "scalbnf", },
{ 0x3ea41eafb53fc99a, 388, "logf", },
{ 0x3fe38bff09ac3da0, 436, "_strtoul_r", },
{ 0x40a25c7e1fd44fe2, 24, "fabsf", },
// Unsafe due to immediates.
//{ 0x410d48d9b6580b4a, 36, "dl_write_ztest", },
{ 0x42dc17c8018f30f2, 44, "vtan.s", },
{ 0x436b07caa2aab931, 352, "acos", },
{ 0x444472537eedf966, 32, "vmzero_q", },
{ 0x449ff96982626338, 28, "vmidt_q", },
{ 0x44f65b1a72c45703, 36, "strlen", },
{ 0x45528de3948615dc, 64, "memcpy", },
{ 0x456a0d78ac318d15, 164, "gta_dl_write_matrix", },
{ 0x497248c9d12f44fd, 68, "strcpy", },
{ 0x4a70207212a4c497, 24, "strlen", },
{ 0x4b16a5c602c74c6c, 24, "vsub_t", },
{ 0x4bb677dace6ca526, 184, "memset", }, // Final FantasyTactics (JPN)
{ 0x4c4bdedcc13ac77c, 624, "dl_write_matrix_5", },
{ 0x4c91c556d1aa896b, 104, "dl_write_material_3", },
{ 0x4cf38c368078181e, 616, "dl_write_matrix", },
{ 0x4d3e7085e01d30e4, 324, "memcpy", }, // PoPoLoCrois (JPN)
{ 0x4d72b294501cddfb, 80, "copysign", },
{ 0x4ddd83b7f4ed8d4e, 844, "memcpy", },
{ 0x4e266783291b0220, 28, "vsub_t", },
{ 0x4e5950928c0bb082, 44, "vmmul_q_transp4", },
{ 0x4f34fc596ecf5b25, 40, "vdiv_t", },
{ 0x500a949afb39133f, 24, "vf2iu_q", },
{ 0x50d8f01ea8fa713d, 48, "send_commandi", },
{ 0x50fa6db2fb14814a, 544, "rint", },
{ 0x513ce13cd7ce97ea, 332, "scalbnf", },
{ 0x514161da54d37416, 1416, "__umoddi3", },
{ 0x51c52d7dd4d2191c, 360, "cos", },
{ 0x5287d4b8abd5806b, 768, "_strtoll_r", },
{ 0x52d5141545a75eda, 60, "dl_write_clutformat", },
{ 0x530cbe1ce9b45d58, 108, "dl_write_light_vector", },
{ 0x53c9aa23504a630f, 96, "vmmul_q_5", },
{ 0x54015ccbcbc75374, 24, "strlen", }, // Metal Gear Solid: Peace Walker demo
{ 0x5550d87a851c218c, 168, "dl_write_viewport", },
{ 0x55c1294280bfade0, 88, "dl_write_blend_fixed", },
{ 0x5642a63f3802a792, 456, "orenoimouto_download_frame", }, // Ore no Imouto ga Konnani Kawaii Wake ga Nai
{ 0x56c9929e8c8c5768, 24, "fabsf", },
{ 0x572b2d9e57e6e363, 788, "memcpy_thingy", },
{ 0x580200b840b47c58, 1856, "_realloc_r", },
{ 0x5961f681bbd69035, 28, "vfad_q", },
{ 0x598b91c64cf7e036, 2388, "qsort", },
{ 0x59a0cb08f5ecf8b6, 28, "copysignf", },
{ 0x5ae4ec2a5e133de3, 28, "vector_cross_t", },
{ 0x5b005f8375d7c364, 236, "floorf", },
{ 0x5b103d973fd1dd94, 92, "matrix_rot_y", },
{ 0x5b9d7e9d4c905694, 196, "_calloc_r", },
{ 0x5bf7a77b028e9f66, 324, "sqrtf", },
{ 0x5c0b3edc0e48852c, 148, "memmove", }, // Dissidia 1 (US)
{ 0x5e898df42c4af6b8, 76, "wcsncmp", },
{ 0x5f473780835e3458, 52, "vclamp_q", },
{ 0x5fc58ed2c4d48b79, 40, "vtfm_q_transp", },
{ 0x6145029ef86f0365, 76, "__extendsfdf2", },
{ 0x62815f41fa86a131, 656, "scalbn", },
{ 0x6301fa5149bd973a, 120, "wcscat", },
{ 0x658b07240a690dbd, 36, "strlen", },
{ 0x66122f0ab50b2ef9, 296, "dl_write_dither_matrix_5", },
{ 0x66f7f1beccbc104a, 256, "memcpy_swizzled", }, // God Eater 2
{ 0x679e647e34ecf7f1, 132, "roundf", },
{ 0x67afe74d9ec72f52, 4380, "_strtod_r", },
{ 0x68b22c2aa4b8b915, 400, "sqrt", },
{ 0x6962da85a6dad937, 60, "strrchr", },
{ 0x69a3c4f774859404, 64, "vmmul_q_transp2", },
{ 0x6ab54910104ef000, 628, "sd_gundam_g_generation_download_frame", }, // SD Gundam G Generation World
{ 0x6b022e20ee3fa733, 68, "__negdf2", },
{ 0x6b2a6347c0dfcb57, 152, "strcpy", },
{ 0x6b4148322c569cb3, 240, "wmemchr", },
{ 0x6c4cb6d25851553a, 44, "vtfm_t", },
{ 0x6c7b2462b9ec7bc7, 56, "vmmul_q", },
{ 0x6ca9cc8fa485d096, 304, "__ieee754_sqrtf", },
{ 0x6ccffc753d2c148e, 96, "strlwr", },
{ 0x6e40ec681fb5c571, 40, "matrix_copy_q", },
{ 0x6e9884c842a51142, 236, "strncasecmp", },
{ 0x6f101c5c4311c144, 276, "floorf", },
{ 0x6f1731f84bbf76c3, 116, "strcmp", },
{ 0x6f4e1a1a84df1da0, 68, "dl_write_texmode", },
{ 0x6f7c9109b5b8fa47, 688, "danganronpa1_2_download_frame", }, // Danganronpa 1
{ 0x70649c7211f6a8da, 16, "fabsf", },
{ 0x7245b74db370ae72, 64, "vmmul_q_transp3", },
{ 0x7259d52b21814a5a, 40, "vtfm_t_transp", },
{ 0x7354fd206796d817, 864, "flowers_download_frame", }, // Flowers
{ 0x736b34ebc702d873, 104, "vmmul_q_transp", },
{ 0x73a614c08f777d52, 792, "danganronpa2_2_download_frame", }, // Danganronpa 2
{ 0x7499a2ce8b60d801, 12, "abs", },
{ 0x74c77fb521740cd2, 284, "toheart2_download_frame_2", }, // To Heart 2 Portable
{ 0x74ebbe7d341463f3, 72, "dl_write_colortest", },
{ 0x755a41f9183bb89a, 60, "vmmul_q", },
{ 0x757d7ab0afbc03f5, 948, "kirameki_school_life_download_frame", }, // Toradora! Portable
{ 0x759834c69bb12c12, 68, "strcpy", },
{ 0x75c5a88d62c9c99f, 276, "sinf", },
{ 0x76c661fecbb39990, 364, "sin", },
{ 0x770c9c07bf58fd14, 16, "fabsf", },
{ 0x774e479eb9634525, 464, "_strtol_r", },
{ 0x77aeb1c23f9aa2ad, 56, "strchr", },
{ 0x78e8c65b5a458f33, 148, "memcmp", },
{ 0x794d1b073c183c77, 24, "fabsf", },
{ 0x7978a886cf70b1c9, 56, "wcschr", },
{ 0x79faa339fff5a80c, 28, "finitef", },
{ 0x7c50728008c288e3, 36, "vector_transform_q_4x4", },
{ 0x7e33d4eaf573f937, 208, "memset", }, // Toukiden (JPN)
{ 0x7f1fc0dce6be120a, 404, "fmod", },
{ 0x8126a59ffa504614, 540, "brandish_download_frame", }, // Brandish, Zero no Kiseki, and Ao no Kiseki
{ 0x828b98925af9ff8f, 40, "vector_distance_t", },
{ 0x83ac39971df4b966, 336, "sqrtf", },
{ 0x84c6cd47834f4c79, 1284, "powf", },
{ 0x8734dc1d155ea493, 24, "vf2iz_q", },
{ 0x87fe3f7e621ddebb, 212, "memcpy", },
{ 0x891ca854e1c664e9, 2392, "qsort", },
{ 0x8965d4b004adad28, 420, "log10f", },
{ 0x89e1858ba11b84e4, 52, "memset", },
{ 0x8a00e7207e7dbc81, 232, "_exit", },
{ 0x8a1f9daadecbaf7f, 104, "vmmul_q_transp", },
{ 0x8a610f34078ce360, 32, "vector_copy_q_t", },
{ 0x8c3fd997a544d0b1, 268, "memcpy", }, // Valkyrie Profile (US)
{ 0x8da0164e69e9b531, 1040, "grisaianokajitsu_download_frame", }, // Grisaia no Kajitsu La Fruit de la Grisaia
{ 0x8dd0546db930ef25, 992, "memmove", }, // PoPoLoCrois (JPN)
{ 0x8df2928848857e97, 164, "strcat", },
{ 0x8e48cabd529ca6b5, 52, "vector_multiply_t", },
{ 0x8e97dcb03fbaba5c, 104, "vmmul_q_transp", },
{ 0x8ee81b03d2eef1e7, 28, "vmul_t", },
{ 0x8f09fb8693c3c49d, 992, "kirameki_school_life_download_frame", }, // Hentai Ouji To Warawanai Neko
{ 0x8f19c41e8b987e18, 100, "matrix_mogrify", },
{ 0x8ff11e9bed387401, 700, "memmove", }, // God Eater 2
{ 0x910140c1a07aa59e, 256, "rot_matrix_euler_zyx", },
{ 0x91606bd72ae90481, 44, "wmemcpy", },
{ 0x92c7d2de74068c9c, 32, "vcross_t", },
{ 0x93d8a275ba288b26, 32, "vdot_t", },
{ 0x94c7083b64a946b4, 2028, "powf", },
{ 0x95a52ce1bc460108, 2036, "_malloc_r", },
{ 0x95bd33ac373c019a, 24, "fabsf", },
{ 0x9705934b0950d68d, 280, "dl_write_framebuffer_ptr", },
{ 0x9734cf721bc0f3a1, 732, "atanf", },
{ 0x99c9288185c352ea, 592, "orenoimouto_download_frame_2", }, // Ore no Imouto ga Konnani Kawaii Wake ga Nai
{ 0x9a06b9d5c16c4c20, 76, "dl_write_clut_ptrload", },
{ 0x9b88b739267d189e, 88, "strrchr", },
{ 0x9ce53975bb88c0e7, 96, "strncpy", },
{ 0x9d4f5f56b52f07f2, 808, "memmove", }, // Jeanne d'Arc (US)
{ 0x9e2941c4a5c5e847, 792, "memcpy", }, // LittleBigPlanet (US)
{ 0x9e6ce11f9d49f954, 292, "memcpy", }, // Jeanne d'Arc (US)
{ 0x9f269daa6f0da803, 128, "dl_write_scissor_region", },
{ 0x9f7919eeb43982b0, 208, "__fixdfsi", },
{ 0xa1ca0640f11182e7, 72, "strcspn", },
{ 0xa243486be51ce224, 272, "cosf", },
{ 0xa2bcef60a550a3ef, 92, "matrix_rot_z", },
{ 0xa373f55c65cd757a, 312, "memcpy_swizzled" }, // God Eater Burst Demo
{ 0xa41989db0f9bf97e, 1304, "pow", },
{ 0xa44f6227fdbc12b1, 132, "memcmp", }, // Popolocrois (US)
{ 0xa46cc6ea720d5775, 44, "dl_write_cull", },
{ 0xa54967288afe8f26, 600, "ceil", },
{ 0xa5ddbbc688e89a4d, 56, "isinf", },
{ 0xa662359e30b829e4, 148, "memcmp", },
{ 0xa6a03f0487a911b0, 392, "danganronpa1_1_download_frame", }, // Danganronpa 1
{ 0xa8390e65fa087c62, 140, "vtfm_t_q", },
{ 0xa85fe8abb88b1c6f, 52, "vector_sub_t", },
{ 0xa9194e55cc586557, 268, "memcpy", },
{ 0xa91b3d60bd75105b, 28, "vadd_t", },
{ 0xab97ec58c58a7c75, 52, "vector_divide_t", },
{ 0xac84fa7571895c9a, 68, "memcpy", }, // Marvel Ultimate Alliance 2
{ 0xacc2c11c3ea28320, 268, "ceilf", },
{ 0xad67add5122b8c64, 52, "matrix_q_translate_t", },
{ 0xada952a1adcea4f5, 60, "vmmul_q_transp5", },
{ 0xadfbf8fb8c933193, 56, "fabs", },
{ 0xae50226363135bdd, 24, "vector_sub_t", },
{ 0xae6cd7dfac82c244, 48, "vpow_s", },
{ 0xaf85d47f95ad2921, 1936, "pow", },
{ 0xafb2c7e56c04c8e9, 48, "vtfm_q", },
{ 0xafc9968e7d246a5e, 1588, "atan", },
{ 0xafcb7dfbc4d72588, 44, "vector_transform_3x4", },
{ 0xb07f9d82d79deea9, 536, "brandish_download_frame", }, // Brandish, and Sora no kiseki 3rd
{ 0xb09c9bc1343a774c, 456, "danganronpa2_1_download_frame", }, // Danganronpa 2
{ 0xb0db731f27d3aa1b, 40, "vmax_s", },
{ 0xb0ef265e87899f0a, 32, "vector_divide_t_s", },
{ 0xb183a37baa12607b, 32, "vscl_t", },
{ 0xb1a3e60a89af9857, 20, "fabs", },
{ 0xb3fef47fb27d57c9, 44, "vector_scale_t", },
{ 0xb43fd5078ae78029, 84, "send_commandi_stall", },
{ 0xb43ffbd4dc446dd2, 324, "atan2f", },
{ 0xb5fdb3083e6f4b3f, 36, "vhtfm_t", },
{ 0xb6a04277fb1e1a1a, 104, "vmmul_q_transp", },
{ 0xb726917d688ac95b, 268, "kagaku_no_ensemble_download_frame", }, // Toaru Majutsu to Kagaku no Ensemble
{ 0xb7448c5ffdd3b0fc, 356, "atan2f", },
{ 0xb7d88567dc22aab1, 820, "memcpy", }, // Trails in the Sky (US)
{ 0xb877d3c37a7aaa5d, 60, "vmmul_q_2", },
{ 0xb89aa73b6f94ba95, 52, "vclamp_t", },
{ 0xb8bd1f0e02e9ad87, 156, "dl_write_light_dir", },
{ 0xb8cfaeebfeb2de20, 7548, "_vfprintf_r", },
{ 0xb97f352e85661af6, 32, "finitef", },
{ 0xba76a8e853426baa, 544, "soranokiseki_fc_download_frame", }, // Sora no kiseki FC
{ 0xbb3c6592ed319ba4, 132, "dl_write_fog_params", },
{ 0xbb7d7c93e4c08577, 124, "__truncdfsf2", },
{ 0xbdf54d66079afb96, 200, "dl_write_bone_matrix_3", },
{ 0xbe773f78afd1a70f, 128, "rand", },
{ 0xbf5d02ccb8514881, 108, "strcmp", },
{ 0xbf791954ebef4afb, 396, "expf", },
{ 0xbfa8c16038b7753d, 868, "sakurasou_download_frame", }, // Sakurasou No Pet Na Kanojo
{ 0xbfe07e305abc4cd1, 808, "memmove" }, // Final Fantasy Tactics (US)
{ 0xc062f2545ef5dc39, 1076, "kirameki_school_life_download_frame", },// Kirameki School Life SP,and Boku wa Tomodati ga Sukunai
{ 0xc0feb88cc04a1dc7, 48, "vector_negate_t", },
{ 0xc1220040b0599a75, 472, "soranokiseki_sc_download_frame", }, // Sora no kiseki SC
{ 0xc1f34599d0b9146b, 116, "__subdf3", },
{ 0xc3089f66ee6f0a24, 464, "growlanser_create_saveicon", }, // Growlanswer IV
{ 0xc319f0d107dd2f45, 888, "__muldf3", },
{ 0xc35c10300b6b6091, 620, "floor", },
{ 0xc3dbf3e6c80a0a51, 164, "dl_write_bone_matrix", },
{ 0xc51519f5dab342d4, 224, "cosf", },
{ 0xc52c14b9af8c3008, 76, "memcmp", },
{ 0xc54eae62622f1e11, 164, "dl_write_bone_matrix_2", },
{ 0xc6b29de7d3245198, 656, "starocean_write_stencil" }, // Star Ocean 1 (US)
{ 0xc96e3a087ebf49a9, 100, "dl_write_light_color", },
{ 0xca7cb2c0b9410618, 680, "kudwafter_download_frame", }, // Kud Wafter
{ 0xcb7a2edd603ecfef, 48, "vtfm_p", },
{ 0xcdf64d21418b2667, 24, "vzero_q", },
{ 0xce1c95ee25b8e2ea, 448, "fmod", },
{ 0xce4d18a75b98859f, 40, "vector_add_t_2", },
// Unsafe due to immediates.
//{ 0xceb5372d0003d951, 52, "dl_write_stenciltest", },
{ 0xcee11483b550ce8f, 24, "vocp_q", },
{ 0xcfecf208769ed5fd, 272, "cosf", },
{ 0xd019b067b58cf6c3, 700, "memmove", }, // Star Ocean 1 (US)
{ 0xd12a3a91e0040229, 524, "dl_write_enable_disable", },
{ 0xd141d1efbfe13ca3, 968, "kirameki_school_life_download_frame", }, // Kirameki School Life SP,and Boku wa Tomodati ga Sukunai
{ 0xd1db467a23ebe00d, 724, "rewrite_download_frame", }, // Rewrite Portable
{ 0xd1faacfc711d61e8, 68, "__negdf2", },
{ 0xd207b0650a41dd9c, 28, "vmin_q", },
{ 0xd6d6e0bb21654778, 24, "vneg_t", },
{ 0xd7229fee680e7851, 40, "vmin_s", },
{ 0xd75670860a7f4b05, 144, "wcsncpy", },
{ 0xd76d1a8804c7ec2c, 100, "dl_write_material", },
{ 0xd7d350c0b33a4662, 28, "vadd_q", },
{ 0xd80051931427dca0, 116, "__subdf3", },
{ 0xda51dab503b06979, 32, "vmidt_q", },
{ 0xdc0cc8b400ecfbf2, 36, "strcmp", },
{ 0xdcab869acf2bacab, 292, "strncasecmp", },
{ 0xdcdf7e1c1a3dc260, 372, "strncmp", },
{ 0xdcfc28e624a81bf1, 5476, "_dtoa_r", },
{ 0xddfa5a85937aa581, 32, "vdot_q", },
{ 0xe0214719d8a0aa4e, 104, "strstr", },
{ 0xe029f0699ca3a886, 76, "matrix300_transform_by", },
{ 0xe086d5c9ce89148f, 212, "bokunonatsuyasumi4_download_frame", }, // Boku no Natsuyasumi 2 and 4,
{ 0xe093c2b0194d52b3, 820, "ff1_battle_effect", }, // Final Fantasy 1 (US)
{ 0xe1107cf3892724a0, 460, "_memalign_r", },
{ 0xe1724e6e29209d97, 24, "vector_length_t_2", },
{ 0xe1a5d939cc308195, 68, "wcscmp", },
{ 0xe2d9106e5b9e39e6, 80, "strnlen", },
{ 0xe3154c81a76515fa, 208, "narisokonai_download_frame", }, // Narisokonai Eiyuutan
{ 0xe32cb5c062d1a1c4, 700, "_strtoull_r", },
{ 0xe3835fb2c9c04e59, 44, "vmmul_q", },
{ 0xe527c62d8613f297, 136, "strcpy", },
{ 0xe6002fc9affd678e, 480, "topx_create_saveicon", }, // Tales of Phantasia X
{ 0xe7b36c2c1348551d, 148, "tan", },
{ 0xe83a7a9d80a21c11, 4448, "_strtod_r", },
{ 0xe894bda909a8a8f9, 1064, "expensive_wipeout_pulse", },
{ 0xe8ad7719be44e7c8, 276, "strchr", },
{ 0xeabb9c1b4f83d2b4, 52, "memset", }, // Crisis Core (US)
{ 0xeb0f7bf63d52ece9, 88, "strncat", },
{ 0xeb8c0834d8bbc28c, 416, "fmodf", },
{ 0xed8918f378e9a563, 628, "sd_gundam_g_generation_download_frame", }, // SD Gundam G Generation Overworld
{ 0xedbbe9bf9fbceca8, 172, "dl_write_viewport2", },
{ 0xedc3f476221f96e6, 148, "tanf", },
{ 0xf1f660fdf349eac2, 1588, "_malloc_r", },
{ 0xf38a356a359dbe06, 28, "vmax_q", },
{ 0xf3fc2220ed0f2703, 32, "send_commandf", },
{ 0xf4d797cef4ac88cd, 684, "_free_r", },
{ 0xf4ea7d2ec943fa02, 224, "sinf", },
{ 0xf4f8cdf479dfc4a4, 224, "sinf", },
{ 0xf52f993e444b6c52, 44, "dl_write_shademode", },
{ 0xf56641884b36c638, 468, "scalbn", },
{ 0xf5e91870b5b76ddc, 288, "motorstorm_download_frame", }, // MotorStorm: Arctic Edge
{ 0xf5f7826b4a61767c, 40, "matrix_copy_q", },
{ 0xf73c094e492bc163, 396, "hypot", },
{ 0xf773297d89ff7a63, 532, "kumonohatateni_download_frame", }, // Amatsumi Sora ni Kumo no Hatate ni, and Hanakisou
{ 0xf7fc691db0147e25, 96, "strspn", },
{ 0xf842aea3baa61f29, 32, "vector_length_t", },
{ 0xf8e0902f4099a9d6, 2260, "qsort", },
{ 0xf972543ab7df071a, 32, "vsqrt_s", },
{ 0xf9b00ef163e8b9d4, 32, "vscl_q", },
{ 0xf9ea1bf2a897ef24, 588, "ceil", },
{ 0xfa156c48461eeeb9, 24, "vf2id_q", },
{ 0xfb4253a1d9d9df9f, 20, "isnanf", },
{ 0xfd34a9ad94fa6241, 76, "__extendsfdf2", },
{ 0xfe2566ad957054b7, 232, "suikoden1_and_2_download_frame_2", }, // Gensou Suikoden 1&2
{ 0xfe4f0280240008e9, 28, "vavg_q", },
{ 0xfe5dd338ab862291, 216, "memset", }, // Metal Gear Solid: Peace Walker demo
{ 0xffc8f5f8f946152c, 192, "dl_write_light_color", },
};
namespace MIPSAnalyst {
// Only can ever output a single reg.
MIPSGPReg GetOutGPReg(MIPSOpcode op) {
MIPSInfo opinfo = MIPSGetInfo(op);
if (opinfo & OUT_RT) {
return MIPS_GET_RT(op);
}
if (opinfo & OUT_RD) {
return MIPS_GET_RD(op);
}
if (opinfo & OUT_RA) {
return MIPS_REG_RA;
}
return MIPS_REG_INVALID;
}
bool ReadsFromGPReg(MIPSOpcode op, MIPSGPReg reg) {
MIPSInfo info = MIPSGetInfo(op);
if ((info & IN_RS) != 0 && MIPS_GET_RS(op) == reg) {
return true;
}
if ((info & IN_RT) != 0 && MIPS_GET_RT(op) == reg) {
return true;
}
return false;
}
bool IsDelaySlotNiceReg(MIPSOpcode branchOp, MIPSOpcode op, MIPSGPReg reg1, MIPSGPReg reg2) {
MIPSInfo info = MIPSGetInfo(op);
if (info & IS_CONDBRANCH) {
return false;
}
// $0 is never an out reg, it's always 0.
if (reg1 != MIPS_REG_ZERO && GetOutGPReg(op) == reg1) {
return false;
}
if (reg2 != MIPS_REG_ZERO && GetOutGPReg(op) == reg2) {
return false;
}
return true;
}
bool IsDelaySlotNiceVFPU(MIPSOpcode branchOp, MIPSOpcode op) {
MIPSInfo info = MIPSGetInfo(op);
if (info & IS_CONDBRANCH) {
return false;
}
return (info & OUT_VFPU_CC) == 0;
}
bool IsDelaySlotNiceFPU(MIPSOpcode branchOp, MIPSOpcode op) {
MIPSInfo info = MIPSGetInfo(op);
if (info & IS_CONDBRANCH) {
return false;
}
return (info & OUT_FPUFLAG) == 0;
}
bool IsSyscall(MIPSOpcode op) {
// Syscalls look like this: 0000 00-- ---- ---- ---- --00 1100
return (op >> 26) == 0 && (op & 0x3f) == 12;
}
static bool IsSWInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xAC000000;
}
static bool IsSBInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xA0000000;
}
static bool IsSHInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xA4000000;
}
static bool IsSWLInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xA8000000;
}
static bool IsSWRInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xB8000000;
}
static bool IsSWC1Instr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xE4000000;
}
static bool IsSVSInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xE8000000;
}
static bool IsSVQInstr(MIPSOpcode op) {
return (op & MIPSTABLE_IMM_MASK) == 0xF8000000;
}
bool OpWouldChangeMemory(u32 pc, u32 addr, u32 size) {
const auto op = Memory::Read_Instruction(pc, true);
// TODO: Trap sc/ll, svl.q, svr.q?
int gprMask = 0;
if (IsSWInstr(op))
gprMask = 0xFFFFFFFF;
if (IsSHInstr(op))
gprMask = 0x0000FFFF;
if (IsSBInstr(op))
gprMask = 0x000000FF;
if (IsSWLInstr(op)) {
const u32 shift = (addr & 3) * 8;
gprMask = 0xFFFFFFFF >> (24 - shift);
}
if (IsSWRInstr(op)) {
const u32 shift = (addr & 3) * 8;
gprMask = 0xFFFFFFFF << shift;
}
u32 writeVal = 0xFFFFFFFF;
u32 prevVal = 0x00000000;
if (gprMask != 0)
{
MIPSGPReg rt = MIPS_GET_RT(op);
writeVal = currentMIPS->r[rt] & gprMask;
prevVal = Memory::Read_U32(addr) & gprMask;
}
if (IsSWC1Instr(op)) {
int ft = MIPS_GET_FT(op);
writeVal = currentMIPS->fi[ft];
prevVal = Memory::Read_U32(addr);
}
if (IsSVSInstr(op)) {
int vt = ((op >> 16) & 0x1f) | ((op & 3) << 5);
writeVal = currentMIPS->vi[voffset[vt]];
prevVal = Memory::Read_U32(addr);
}
if (IsSVQInstr(op)) {
int vt = (((op >> 16) & 0x1f)) | ((op & 1) << 5);
float rd[4];
ReadVector(rd, V_Quad, vt);
return memcmp(rd, Memory::GetPointer(addr), sizeof(float) * 4) != 0;
}
// TODO: Technically, the break might be for 1 byte in the middle of a sw.
return writeVal != prevVal;
}
AnalysisResults Analyze(u32 address) {
const int MAX_ANALYZE = 10000;
AnalysisResults results;
//set everything to -1 (FF)
memset(&results, 255, sizeof(AnalysisResults));
for (int i = 0; i < MIPS_NUM_GPRS; i++) {
results.r[i].used = false;
results.r[i].readCount = 0;
results.r[i].writeCount = 0;
results.r[i].readAsAddrCount = 0;
}
for (u32 addr = address, endAddr = address + MAX_ANALYZE; addr <= endAddr; addr += 4) {
MIPSOpcode op = Memory::Read_Instruction(addr, true);
MIPSInfo info = MIPSGetInfo(op);
MIPSGPReg rs = MIPS_GET_RS(op);
MIPSGPReg rt = MIPS_GET_RT(op);
if (info & IN_RS) {
if ((info & IN_RS_ADDR) == IN_RS_ADDR) {
results.r[rs].MarkReadAsAddr(addr);
} else {
results.r[rs].MarkRead(addr);
}
}
if (info & IN_RT) {
results.r[rt].MarkRead(addr);
}
MIPSGPReg outReg = GetOutGPReg(op);
if (outReg != MIPS_REG_INVALID) {
results.r[outReg].MarkWrite(addr);
}
if (info & DELAYSLOT) {
// Let's just finish the delay slot before bailing.
endAddr = addr + 4;
}
}
int numUsedRegs = 0;
static int totalUsedRegs = 0;
static int numAnalyzings = 0;
for (int i = 0; i < MIPS_NUM_GPRS; i++) {
if (results.r[i].used) {
numUsedRegs++;
}
}
totalUsedRegs += numUsedRegs;
numAnalyzings++;
VERBOSE_LOG(CPU, "[ %08x ] Used regs: %i Average: %f", address, numUsedRegs, (float)totalUsedRegs / (float)numAnalyzings);
return results;
}
void Reset() {
lock_guard guard(functions_lock);
functions.clear();
hashToFunction.clear();
}
void UpdateHashToFunctionMap() {
lock_guard guard(functions_lock);
hashToFunction.clear();
// Really need to detect C++11 features with better defines.
#if !defined(__SYMBIAN32__) && !defined(IOS)
hashToFunction.reserve(functions.size());
#endif
for (auto iter = functions.begin(); iter != functions.end(); iter++) {
AnalyzedFunction &f = *iter;
if (f.hasHash && f.size > 16) {
hashToFunction.insert(std::make_pair(f.hash, &f));
}
}
}
enum RegisterUsage {
USAGE_CLOBBERED,
USAGE_INPUT,
USAGE_UNKNOWN,
};
static RegisterUsage DetermineInOutUsage(u64 inFlag, u64 outFlag, u32 addr, int instrs) {
const u32 start = addr;
u32 end = addr + instrs * sizeof(u32);
bool canClobber = true;
while (addr < end) {
const MIPSOpcode op = Memory::Read_Instruction(addr, true);
const MIPSInfo info = MIPSGetInfo(op);
// Yes, used.
if (info & inFlag)
return USAGE_INPUT;
// Clobbered, so not used.
if (info & outFlag)
return canClobber ? USAGE_CLOBBERED : USAGE_UNKNOWN;
// Bail early if we hit a branch (could follow each path for continuing?)
if ((info & IS_CONDBRANCH) || (info & IS_JUMP)) {
// Still need to check the delay slot (so end after it.)
// We'll assume likely are taken.
end = addr + 8;
// The reason for the start != addr check is that we compile delay slots before branches.
// That means if we're starting at the branch, it's not safe to allow the delay slot
// to clobber, since it might have already been compiled.
// As for LIKELY, we don't know if it'll run the branch or not.
canClobber = (info & LIKELY) == 0 && start != addr;
}
addr += 4;
}
return USAGE_UNKNOWN;
}
static RegisterUsage DetermineRegisterUsage(MIPSGPReg reg, u32 addr, int instrs) {
switch (reg) {
case MIPS_REG_HI:
return DetermineInOutUsage(IN_HI, OUT_HI, addr, instrs);
case MIPS_REG_LO:
return DetermineInOutUsage(IN_LO, OUT_LO, addr, instrs);
case MIPS_REG_FPCOND:
return DetermineInOutUsage(IN_FPUFLAG, OUT_FPUFLAG, addr, instrs);
case MIPS_REG_VFPUCC:
return DetermineInOutUsage(IN_VFPU_CC, OUT_VFPU_CC, addr, instrs);
default:
break;
}
if (reg > 32) {
return USAGE_UNKNOWN;
}
const u32 start = addr;
u32 end = addr + instrs * sizeof(u32);
bool canClobber = true;
while (addr < end) {
const MIPSOpcode op = Memory::Read_Instruction(addr, true);
const MIPSInfo info = MIPSGetInfo(op);
// Yes, used.
if ((info & IN_RS) && (MIPS_GET_RS(op) == reg))
return USAGE_INPUT;
if ((info & IN_RT) && (MIPS_GET_RT(op) == reg))
return USAGE_INPUT;
// Clobbered, so not used.
bool clobbered = false;
if ((info & OUT_RT) && (MIPS_GET_RT(op) == reg))
clobbered = true;
if ((info & OUT_RD) && (MIPS_GET_RD(op) == reg))
clobbered = true;
if ((info & OUT_RA) && (reg == MIPS_REG_RA))
clobbered = true;
if (clobbered) {
if (!canClobber || (info & IS_CONDMOVE))
return USAGE_UNKNOWN;
return USAGE_CLOBBERED;
}
// Bail early if we hit a branch (could follow each path for continuing?)
if ((info & IS_CONDBRANCH) || (info & IS_JUMP)) {
// Still need to check the delay slot (so end after it.)
// We'll assume likely are taken.
end = addr + 8;
// The reason for the start != addr check is that we compile delay slots before branches.
// That means if we're starting at the branch, it's not safe to allow the delay slot
// to clobber, since it might have already been compiled.
// As for LIKELY, we don't know if it'll run the branch or not.
canClobber = (info & LIKELY) == 0 && start != addr;
}
addr += 4;
}
return USAGE_UNKNOWN;
}
bool IsRegisterUsed(MIPSGPReg reg, u32 addr, int instrs) {
return DetermineRegisterUsage(reg, addr, instrs) == USAGE_INPUT;
}
bool IsRegisterClobbered(MIPSGPReg reg, u32 addr, int instrs) {
return DetermineRegisterUsage(reg, addr, instrs) == USAGE_CLOBBERED;
}
void HashFunctions() {
lock_guard guard(functions_lock);
std::vector<u32> buffer;
for (auto iter = functions.begin(), end = functions.end(); iter != end; iter++) {
AnalyzedFunction &f = *iter;
// This is unfortunate. In case of emuhacks or relocs, we have to make a copy.
buffer.resize((f.end - f.start + 4) / 4);
size_t pos = 0;
for (u32 addr = f.start; addr <= f.end; addr += 4) {
u32 validbits = 0xFFFFFFFF;
MIPSOpcode instr = Memory::Read_Instruction(addr, true);
if (MIPS_IS_EMUHACK(instr)) {
f.hasHash = false;
goto skip;
}
MIPSInfo flags = MIPSGetInfo(instr);
if (flags & IN_IMM16)
validbits &= ~0xFFFF;
if (flags & IN_IMM26)
validbits &= ~0x03FFFFFF;
buffer[pos++] = instr & validbits;
}
f.hash = CityHash64((const char *) &buffer[0], buffer.size() * sizeof(u32));
f.hasHash = true;
skip:
;
}
}
static const char *DefaultFunctionName(char buffer[256], u32 startAddr) {
sprintf(buffer, "z_un_%08x", startAddr);
return buffer;
}
static bool IsDefaultFunction(const char *name) {
if (name == NULL) {
// Must be I guess?
return true;
}
// Assume any z_un, not just the address, is a default func.
return !strncmp(name, "z_un_", strlen("z_un_")) || !strncmp(name, "u_un_", strlen("u_un_"));
}
static bool IsDefaultFunction(const std::string &name) {
if (name.empty()) {
// Must be I guess?
return true;
}
return IsDefaultFunction(name.c_str());
}
static u32 ScanAheadForJumpback(u32 fromAddr, u32 knownStart, u32 knownEnd) {
static const u32 MAX_AHEAD_SCAN = 0x1000;
// Maybe a bit high... just to make sure we don't get confused by recursive tail recursion.
static const u32 MAX_FUNC_SIZE = 0x20000;
if (fromAddr > knownEnd + MAX_FUNC_SIZE) {
return INVALIDTARGET;
}
// Code might jump halfway up to before fromAddr, but after knownEnd.
// In that area, there could be another jump up to the valid range.
// So we track that for a second scan.
u32 closestJumpbackAddr = INVALIDTARGET;
u32 closestJumpbackTarget = fromAddr;
// We assume the furthest jumpback is within the func.
u32 furthestJumpbackAddr = INVALIDTARGET;
for (u32 ahead = fromAddr; ahead < fromAddr + MAX_AHEAD_SCAN; ahead += 4) {
MIPSOpcode aheadOp = Memory::Read_Instruction(ahead, true);
u32 target = GetBranchTargetNoRA(ahead, aheadOp);
if (target == INVALIDTARGET && ((aheadOp & 0xFC000000) == 0x08000000)) {
target = GetJumpTarget(ahead);
}
if (target != INVALIDTARGET) {
// Only if it comes back up to known code within this func.
if (target >= knownStart && target <= knownEnd) {
furthestJumpbackAddr = ahead;
}
// But if it jumps above fromAddr, we should scan that area too...
if (target < closestJumpbackTarget && target < fromAddr && target > knownEnd) {
closestJumpbackAddr = ahead;
closestJumpbackTarget = target;
}
}
if (aheadOp == MIPS_MAKE_JR_RA()) {
break;
}
}
if (closestJumpbackAddr != INVALIDTARGET && furthestJumpbackAddr == INVALIDTARGET) {
for (u32 behind = closestJumpbackTarget; behind < fromAddr; behind += 4) {
MIPSOpcode behindOp = Memory::Read_Instruction(behind, true);
u32 target = GetBranchTargetNoRA(behind, behindOp);
if (target == INVALIDTARGET && ((behindOp & 0xFC000000) == 0x08000000)) {
target = GetJumpTarget(behind);
}
if (target != INVALIDTARGET) {
if (target >= knownStart && target <= knownEnd) {
furthestJumpbackAddr = closestJumpbackAddr;
}
}
}
}
return furthestJumpbackAddr;
}
void ScanForFunctions(u32 startAddr, u32 endAddr, bool insertSymbols) {
lock_guard guard(functions_lock);
AnalyzedFunction currentFunction = {startAddr};
u32 furthestBranch = 0;
bool looking = false;
bool end = false;
bool isStraightLeaf = true;
bool decreasedSp = false;
u32 addr;
u32 addrNextSym = 0;
for (addr = startAddr; addr <= endAddr; addr += 4) {
// Use pre-existing symbol map info if available. May be more reliable.
SymbolInfo syminfo;
if (addrNextSym <= addr) {
addrNextSym = symbolMap.FindPossibleFunctionAtAfter(addr);
}
if (addrNextSym <= addr && symbolMap.GetSymbolInfo(&syminfo, addr, ST_FUNCTION)) {
addr = syminfo.address + syminfo.size - 4;
// We still need to insert the func for hashing purposes.
currentFunction.start = syminfo.address;
currentFunction.end = syminfo.address + syminfo.size - 4;
// Re-add it to the map if the module address is not known yet (only happens from loaded maps.)
currentFunction.foundInSymbolMap = syminfo.moduleAddress != 0;
functions.push_back(currentFunction);
currentFunction.foundInSymbolMap = false;
currentFunction.start = addr + 4;
furthestBranch = 0;
looking = false;
end = false;
isStraightLeaf = false;
decreasedSp = false;
continue;
}
MIPSOpcode op = Memory::Read_Instruction(addr, true);
u32 target = GetBranchTargetNoRA(addr, op);
if (target != INVALIDTARGET) {
isStraightLeaf = false;
if (target > furthestBranch) {
furthestBranch = target;
}
// j X
} else if ((op & 0xFC000000) == 0x08000000) {
u32 sureTarget = GetJumpTarget(addr);
// Check for a tail call. Might not even have a jr ra.
if (sureTarget != INVALIDTARGET && sureTarget < currentFunction.start) {
if (furthestBranch > addr) {
looking = true;
addr += 4;
} else {
end = true;
}
} else if (sureTarget != INVALIDTARGET && sureTarget > addr && sureTarget > furthestBranch) {
static const u32 MAX_JUMP_FORWARD = 128;
// If it's a nearby forward jump, and not a stackless leaf, assume not a tail call.
if (sureTarget <= addr + MAX_JUMP_FORWARD && decreasedSp) {
// But let's check the delay slot.
MIPSOpcode op = Memory::Read_Instruction(addr + 4, true);
// addiu sp, sp, +X
if ((op & 0xFFFF8000) != 0x27BD0000) {
furthestBranch = sureTarget;
continue;
}
}
// A jump later. Probably tail, but let's check if it jumps back.
// We use + 8 here in case it jumps right back to the delay slot. We'll consider that inside the func.
u32 knownEnd = furthestBranch == 0 ? addr + 8 : furthestBranch;
u32 jumpback = ScanAheadForJumpback(sureTarget, currentFunction.start, knownEnd);
if (jumpback != INVALIDTARGET && jumpback > addr && jumpback > knownEnd) {
furthestBranch = jumpback;
} else {
if (furthestBranch > addr) {
looking = true;
addr += 4;
} else {
end = true;
}
}
}
}
if (op == MIPS_MAKE_JR_RA()) {
// If a branch goes to the jr ra, it's still ending here.
if (furthestBranch > addr) {
looking = true;
addr += 4;
} else {
end = true;
}
}
// addiu sp, sp, -X
if ((op & 0xFFFF8000) == 0x27BD8000) {
decreasedSp = true;
}
// addiu sp, sp, +X
if ((op & 0xFFFF8000) == 0x27BD0000) {
decreasedSp = false;
}
if (op == MIPS_MAKE_NOP() && currentFunction.start == addr) {
// Skip nop padding at the beginning of functions (alignment?)
currentFunction.start += 4;
}
if (looking) {
if (addr >= furthestBranch) {
u32 sureTarget = GetSureBranchTarget(addr);
// Regular j only, jals are to new funcs.
if (sureTarget == INVALIDTARGET && ((op & 0xFC000000) == 0x08000000)) {
sureTarget = GetJumpTarget(addr);
}
if (sureTarget != INVALIDTARGET && sureTarget < addr) {
end = true;
} else if (sureTarget != INVALIDTARGET) {
// Okay, we have a downward jump. Might be an else or a tail call...
// If there's a jump back upward in spitting distance of it, it's an else.
u32 knownEnd = furthestBranch == 0 ? addr : furthestBranch;
u32 jumpback = ScanAheadForJumpback(sureTarget, currentFunction.start, knownEnd);
if (jumpback != INVALIDTARGET && jumpback > addr && jumpback > knownEnd) {
furthestBranch = jumpback;
}
}
}
}
if (end) {
currentFunction.end = addr + 4;
currentFunction.isStraightLeaf = isStraightLeaf;
functions.push_back(currentFunction);
furthestBranch = 0;
addr += 4;
looking = false;
end = false;
isStraightLeaf = true;
decreasedSp = false;
currentFunction.start = addr+4;
}
}
currentFunction.end = addr + 4;
functions.push_back(currentFunction);
for (auto iter = functions.begin(); iter != functions.end(); iter++) {
iter->size = iter->end - iter->start + 4;
if (insertSymbols && !iter->foundInSymbolMap) {
char temp[256];
symbolMap.AddFunction(DefaultFunctionName(temp, iter->start), iter->start, iter->end - iter->start + 4);
}
}
HashFunctions();
std::string hashMapFilename = GetSysDirectory(DIRECTORY_SYSTEM) + "knownfuncs.ini";
if (g_Config.bFuncHashMap || g_Config.bFuncReplacements) {
LoadBuiltinHashMap();
if (g_Config.bFuncHashMap) {
LoadHashMap(hashMapFilename);
StoreHashMap(hashMapFilename);
}
if (insertSymbols) {
ApplyHashMap();
}
if (g_Config.bFuncReplacements) {
ReplaceFunctions();
}
}
}
void RegisterFunction(u32 startAddr, u32 size, const char *name) {
lock_guard guard(functions_lock);
// Check if we have this already
for (auto iter = functions.begin(); iter != functions.end(); iter++) {
if (iter->start == startAddr) {
// Let's just add it to the hashmap.
if (iter->hasHash && size > 16) {
HashMapFunc hfun;
hfun.hash = iter->hash;
strncpy(hfun.name, name, 64);
hfun.name[63] = 0;
hfun.size = size;
hashMap.insert(hfun);
return;
} else if (!iter->hasHash || size == 0) {
ERROR_LOG(HLE, "%s: %08x %08x : match but no hash (%i) or no size", name, startAddr, size, iter->hasHash);
}
}
}
// Cheats a little.
AnalyzedFunction fun;
fun.start = startAddr;
fun.end = startAddr + size - 4;
fun.isStraightLeaf = false; // dunno really
strncpy(fun.name, name, 64);
fun.name[63] = 0;
functions.push_back(fun);
HashFunctions();
}
void ForgetFunctions(u32 startAddr, u32 endAddr) {
lock_guard guard(functions_lock);
// It makes sense to forget functions as modules are unloaded but it breaks
// the easy way of saving a hashmap by unloading and loading a game. I added
// an alternative way.
// Most of the time, functions from the same module will be contiguous in functions.
FunctionsVector::iterator prevMatch = functions.end();
size_t originalSize = functions.size();
for (auto iter = functions.begin(); iter != functions.end(); ++iter) {
const bool hadPrevMatch = prevMatch != functions.end();
const bool match = iter->start >= startAddr && iter->start <= endAddr;
if (!hadPrevMatch && match) {
// Entering a range.
prevMatch = iter;
} else if (hadPrevMatch && !match) {
// Left a range.
iter = functions.erase(prevMatch, iter);
prevMatch = functions.end();
}
}
if (prevMatch != functions.end()) {
// Cool, this is the fastest way.
functions.erase(prevMatch, functions.end());
}
RestoreReplacedInstructions(startAddr, endAddr);
if (functions.empty()) {
hashToFunction.clear();
} else if (originalSize != functions.size()) {
UpdateHashToFunctionMap();
}
}
void ReplaceFunctions() {
lock_guard guard(functions_lock);
for (size_t i = 0; i < functions.size(); i++) {
WriteReplaceInstructions(functions[i].start, functions[i].hash, functions[i].size);
}
}
void UpdateHashMap() {
lock_guard guard(functions_lock);
for (auto it = functions.begin(), end = functions.end(); it != end; ++it) {
const AnalyzedFunction &f = *it;
// Small functions aren't very interesting.
if (!f.hasHash || f.size <= 16) {
continue;
}
// Functions with default names aren't very interesting either.
const std::string name = symbolMap.GetLabelString(f.start);
if (IsDefaultFunction(name)) {
continue;
}
HashMapFunc mf = { "", f.hash, f.size };
strncpy(mf.name, name.c_str(), sizeof(mf.name) - 1);
hashMap.insert(mf);
}
}
const char *LookupHash(u64 hash, u32 funcsize) {
const HashMapFunc f = { "", hash, funcsize };
auto it = hashMap.find(f);
if (it != hashMap.end()) {
return it->name;
}
return 0;
}
void SetHashMapFilename(const std::string& filename) {
if (filename.empty())
hashmapFileName = GetSysDirectory(DIRECTORY_SYSTEM) + "knownfuncs.ini";
else
hashmapFileName = filename;
}
void StoreHashMap(std::string filename) {
if (filename.empty())
filename = hashmapFileName;
UpdateHashMap();
if (hashMap.empty()) {
return;
}
FILE *file = File::OpenCFile(filename, "wt");
if (!file) {
WARN_LOG(LOADER, "Could not store hash map: %s", filename.c_str());
return;
}
for (auto it = hashMap.begin(), end = hashMap.end(); it != end; ++it) {
const HashMapFunc &mf = *it;
if (!mf.hardcoded) {
if (fprintf(file, "%016llx:%d = %s\n", mf.hash, mf.size, mf.name) <= 0) {
WARN_LOG(LOADER, "Could not store hash map: %s", filename.c_str());
break;
}
}
}
fclose(file);
}
void ApplyHashMap() {
UpdateHashToFunctionMap();
for (auto mf = hashMap.begin(), end = hashMap.end(); mf != end; ++mf) {
auto range = hashToFunction.equal_range(mf->hash);
if (range.first == range.second) {
continue;
}
// Yay, found a function.
for (auto iter = range.first; iter != range.second; ++iter) {
AnalyzedFunction &f = *iter->second;
if (f.hash == mf->hash && f.size == mf->size) {
strncpy(f.name, mf->name, sizeof(mf->name) - 1);
std::string existingLabel = symbolMap.GetLabelString(f.start);
char defaultLabel[256];
// If it was renamed, keep it. Only change the name if it's still the default.
if (existingLabel.empty() || existingLabel == DefaultFunctionName(defaultLabel, f.start)) {
symbolMap.SetLabelName(mf->name, f.start);
}
}
}
}
}
void LoadBuiltinHashMap() {
HashMapFunc mf;
for (size_t i = 0; i < ARRAY_SIZE(hardcodedHashes); i++) {
mf.hash = hardcodedHashes[i].hash;
mf.size = hardcodedHashes[i].funcSize;
strncpy(mf.name, hardcodedHashes[i].funcName, sizeof(mf.name));
mf.name[sizeof(mf.name) - 1] = 0;
mf.hardcoded = true;
hashMap.insert(mf);
}
}
void LoadHashMap(const std::string& filename) {
FILE *file = File::OpenCFile(filename, "rt");
if (!file) {
WARN_LOG(LOADER, "Could not load hash map: %s", filename.c_str());
return;
}
hashmapFileName = filename;
while (!feof(file)) {
HashMapFunc mf = { "" };
mf.hardcoded = false;
if (fscanf(file, "%llx:%d = %63s\n", &mf.hash, &mf.size, mf.name) < 3) {
char temp[1024];
fgets(temp, 1024, file);
continue;
}
hashMap.insert(mf);
}
fclose(file);
}
std::vector<MIPSGPReg> GetInputRegs(MIPSOpcode op) {
std::vector<MIPSGPReg> vec;
MIPSInfo info = MIPSGetInfo(op);
if (info & IN_RS) vec.push_back(MIPS_GET_RS(op));
if (info & IN_RT) vec.push_back(MIPS_GET_RT(op));
return vec;
}
std::vector<MIPSGPReg> GetOutputRegs(MIPSOpcode op) {
std::vector<MIPSGPReg> vec;
MIPSInfo info = MIPSGetInfo(op);
if (info & OUT_RD) vec.push_back(MIPS_GET_RD(op));
if (info & OUT_RT) vec.push_back(MIPS_GET_RT(op));
if (info & OUT_RA) vec.push_back(MIPS_REG_RA);
return vec;
}
MipsOpcodeInfo GetOpcodeInfo(DebugInterface* cpu, u32 address) {
MipsOpcodeInfo info;
memset(&info, 0, sizeof(info));
if (!Memory::IsValidAddress(address)) {
return info;
}
info.cpu = cpu;
info.opcodeAddress = address;
info.encodedOpcode = Memory::Read_Instruction(address);
MIPSOpcode op = info.encodedOpcode;
MIPSInfo opInfo = MIPSGetInfo(op);
info.isLikelyBranch = (opInfo & LIKELY) != 0;
// gather relevant address for alu operations
// that's usually the value of the dest register
switch (MIPS_GET_OP(op)) {
case 0: // special
switch (MIPS_GET_FUNC(op)) {
case 0x20: // add
case 0x21: // addu
info.hasRelevantAddress = true;
info.relevantAddress = cpu->GetRegValue(0,MIPS_GET_RS(op))+cpu->GetRegValue(0,MIPS_GET_RT(op));
break;
case 0x22: // sub
case 0x23: // subu
info.hasRelevantAddress = true;
info.relevantAddress = cpu->GetRegValue(0,MIPS_GET_RS(op))-cpu->GetRegValue(0,MIPS_GET_RT(op));
break;
}
break;
case 0x08: // addi
case 0x09: // adiu
info.hasRelevantAddress = true;
info.relevantAddress = cpu->GetRegValue(0,MIPS_GET_RS(op))+((s16)(op & 0xFFFF));
break;
}
//j , jal, ...
if (opInfo & IS_JUMP) {
info.isBranch = true;
if ((opInfo & OUT_RA) || (opInfo & OUT_RD)) { // link
info.isLinkedBranch = true;
}
if (opInfo & IN_RS) { // to register
info.isBranchToRegister = true;
info.branchRegisterNum = (int)MIPS_GET_RS(op);
info.branchTarget = cpu->GetRegValue(0,info.branchRegisterNum);
} else { // to immediate
info.branchTarget = GetJumpTarget(address);
}
}
// movn, movz
if (opInfo & IS_CONDMOVE) {
info.isConditional = true;
u32 rt = cpu->GetRegValue(0, (int)MIPS_GET_RT(op));
switch (opInfo & CONDTYPE_MASK) {
case CONDTYPE_EQ:
info.conditionMet = (rt == 0);
break;
case CONDTYPE_NE:
info.conditionMet = (rt != 0);
break;
}
}
// beq, bgtz, ...
if (opInfo & IS_CONDBRANCH) {
info.isBranch = true;
info.isConditional = true;
info.branchTarget = GetBranchTarget(address);
if (opInfo & OUT_RA) { // link
info.isLinkedBranch = true;
}
u32 rt = cpu->GetRegValue(0, (int)MIPS_GET_RT(op));
u32 rs = cpu->GetRegValue(0, (int)MIPS_GET_RS(op));
switch (opInfo & CONDTYPE_MASK) {
case CONDTYPE_EQ:
if (opInfo & IN_FPUFLAG) { // fpu branch
info.conditionMet = currentMIPS->fpcond == 0;
} else {
info.conditionMet = (rt == rs);
if (MIPS_GET_RT(op) == MIPS_GET_RS(op)) { // always true
info.isConditional = false;
}
}
break;
case CONDTYPE_NE:
if (opInfo & IN_FPUFLAG) { // fpu branch
info.conditionMet = currentMIPS->fpcond != 0;
} else {
info.conditionMet = (rt != rs);
if (MIPS_GET_RT(op) == MIPS_GET_RS(op)) { // always true
info.isConditional = false;
}
}
break;
case CONDTYPE_LEZ:
info.conditionMet = (((s32)rs) <= 0);
break;
case CONDTYPE_GTZ:
info.conditionMet = (((s32)rs) > 0);
break;
case CONDTYPE_LTZ:
info.conditionMet = (((s32)rs) < 0);
break;
case CONDTYPE_GEZ:
info.conditionMet = (((s32)rs) >= 0);
break;
}
}
// lw, sh, ...
if ((opInfo & IN_MEM) || (opInfo & OUT_MEM)) {
info.isDataAccess = true;
switch (opInfo & MEMTYPE_MASK) {
case MEMTYPE_BYTE:
info.dataSize = 1;
break;
case MEMTYPE_HWORD:
info.dataSize = 2;
break;
case MEMTYPE_WORD:
case MEMTYPE_FLOAT:
info.dataSize = 4;
break;
case MEMTYPE_VQUAD:
info.dataSize = 16;
}
u32 rs = cpu->GetRegValue(0, (int)MIPS_GET_RS(op));
s16 imm16 = op & 0xFFFF;
info.dataAddress = rs + imm16;
info.hasRelevantAddress = true;
info.relevantAddress = info.dataAddress;
}
return info;
}
}
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