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GBA: Split cheats out into separate source files

This commit is contained in:
Jeffrey Pfau 2015-04-09 00:41:00 -07:00
parent 1dd82f21d9
commit 8636b81f13
10 changed files with 834 additions and 747 deletions
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4
CMakeLists.txt
View File

@ -18,6 +18,7 @@ set(BUILD_STATIC OFF CACHE BOOL "Build a static library")
set(BUILD_SHARED ON CACHE BOOL "Build a shared library") set(BUILD_SHARED ON CACHE BOOL "Build a shared library")
file(GLOB ARM_SRC ${CMAKE_SOURCE_DIR}/src/arm/*.c) file(GLOB ARM_SRC ${CMAKE_SOURCE_DIR}/src/arm/*.c)
file(GLOB GBA_SRC ${CMAKE_SOURCE_DIR}/src/gba/*.c) file(GLOB GBA_SRC ${CMAKE_SOURCE_DIR}/src/gba/*.c)
file(GLOB GBA_CHEATS_SRC ${CMAKE_SOURCE_DIR}/src/gba/cheats/*.c)
file(GLOB GBA_RR_SRC ${CMAKE_SOURCE_DIR}/src/gba/rr/*.c) file(GLOB GBA_RR_SRC ${CMAKE_SOURCE_DIR}/src/gba/rr/*.c)
file(GLOB GBA_SV_SRC ${CMAKE_SOURCE_DIR}/src/gba/supervisor/*.c) file(GLOB GBA_SV_SRC ${CMAKE_SOURCE_DIR}/src/gba/supervisor/*.c)
file(GLOB UTIL_SRC ${CMAKE_SOURCE_DIR}/src/util/*.[cSs]) file(GLOB UTIL_SRC ${CMAKE_SOURCE_DIR}/src/util/*.[cSs])
@ -28,7 +29,7 @@ list(APPEND UTIL_SRC ${CMAKE_SOURCE_DIR}/src/platform/commandline.c)
set(VFS_SRC ${CMAKE_SOURCE_DIR}/src/util/vfs/vfs-mem.c) set(VFS_SRC ${CMAKE_SOURCE_DIR}/src/util/vfs/vfs-mem.c)
source_group("ARM core" FILES ${ARM_SRC}) source_group("ARM core" FILES ${ARM_SRC})
source_group("GBA board" FILES ${GBA_SRC} ${RENDERER_SRC} ${SIO_SRC}) source_group("GBA board" FILES ${GBA_SRC} ${RENDERER_SRC} ${SIO_SRC})
source_group("GBA supervisor" FILES ${GBA_SV_SRC} ${GBA_RR_SRC}) source_group("GBA supervisor" FILES ${GBA_CHEATS_SRC} ${GBA_SV_SRC} ${GBA_RR_SRC})
source_group("Utilities" FILES ${UTIL_SRC}) source_group("Utilities" FILES ${UTIL_SRC})
include_directories(${CMAKE_SOURCE_DIR}/src/arm) include_directories(${CMAKE_SOURCE_DIR}/src/arm)
include_directories(${CMAKE_SOURCE_DIR}/src) include_directories(${CMAKE_SOURCE_DIR}/src)
@ -303,6 +304,7 @@ endforeach()
set(CORE_SRC set(CORE_SRC
${ARM_SRC} ${ARM_SRC}
${GBA_SRC} ${GBA_SRC}
${GBA_CHEATS_SRC}
${GBA_RR_SRC} ${GBA_RR_SRC}
${GBA_SV_SRC} ${GBA_SV_SRC}
${DEBUGGER_SRC} ${DEBUGGER_SRC}

768
src/gba/cheats.c
View File

@ -5,8 +5,10 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "cheats.h" #include "cheats.h"
#include "gba/cheats/gameshark.h"
#include "gba/cheats/parv3.h"
#include "gba/gba.h" #include "gba/gba.h"
#include "gba/io.h" #include "util/string.h"
#include "util/vfs.h" #include "util/vfs.h"
#define MAX_LINE_LENGTH 128 #define MAX_LINE_LENGTH 128
@ -17,85 +19,6 @@ DEFINE_VECTOR(GBACheatList, struct GBACheat);
DEFINE_VECTOR(GBACheatSets, struct GBACheatSet*); DEFINE_VECTOR(GBACheatSets, struct GBACheatSet*);
DEFINE_VECTOR(StringList, char*); DEFINE_VECTOR(StringList, char*);
static const uint32_t _gsa1S[4] = { 0x09F4FBBD, 0x9681884A, 0x352027E9, 0xF3DEE5A7 };
static const uint32_t _par3S[4] = { 0x7AA9648F, 0x7FAE6994, 0xC0EFAAD5, 0x42712C57 };
static const uint8_t _gsa1T1[256] = {
0x31, 0x1C, 0x23, 0xE5, 0x89, 0x8E, 0xA1, 0x37, 0x74, 0x6D, 0x67, 0xFC, 0x1F, 0xC0, 0xB1, 0x94,
0x3B, 0x05, 0x56, 0x86, 0x00, 0x24, 0xF0, 0x17, 0x72, 0xA2, 0x3D, 0x1B, 0xE3, 0x17, 0xC5, 0x0B,
0xB9, 0xE2, 0xBD, 0x58, 0x71, 0x1B, 0x2C, 0xFF, 0xE4, 0xC9, 0x4C, 0x5E, 0xC9, 0x55, 0x33, 0x45,
0x7C, 0x3F, 0xB2, 0x51, 0xFE, 0x10, 0x7E, 0x75, 0x3C, 0x90, 0x8D, 0xDA, 0x94, 0x38, 0xC3, 0xE9,
0x95, 0xEA, 0xCE, 0xA6, 0x06, 0xE0, 0x4F, 0x3F, 0x2A, 0xE3, 0x3A, 0xE4, 0x43, 0xBD, 0x7F, 0xDA,
0x55, 0xF0, 0xEA, 0xCB, 0x2C, 0xA8, 0x47, 0x61, 0xA0, 0xEF, 0xCB, 0x13, 0x18, 0x20, 0xAF, 0x3E,
0x4D, 0x9E, 0x1E, 0x77, 0x51, 0xC5, 0x51, 0x20, 0xCF, 0x21, 0xF9, 0x39, 0x94, 0xDE, 0xDD, 0x79,
0x4E, 0x80, 0xC4, 0x9D, 0x94, 0xD5, 0x95, 0x01, 0x27, 0x27, 0xBD, 0x6D, 0x78, 0xB5, 0xD1, 0x31,
0x6A, 0x65, 0x74, 0x74, 0x58, 0xB3, 0x7C, 0xC9, 0x5A, 0xED, 0x50, 0x03, 0xC4, 0xA2, 0x94, 0x4B,
0xF0, 0x58, 0x09, 0x6F, 0x3E, 0x7D, 0xAE, 0x7D, 0x58, 0xA0, 0x2C, 0x91, 0xBB, 0xE1, 0x70, 0xEB,
0x73, 0xA6, 0x9A, 0x44, 0x25, 0x90, 0x16, 0x62, 0x53, 0xAE, 0x08, 0xEB, 0xDC, 0xF0, 0xEE, 0x77,
0xC2, 0xDE, 0x81, 0xE8, 0x30, 0x89, 0xDB, 0xFE, 0xBC, 0xC2, 0xDF, 0x26, 0xE9, 0x8B, 0xD6, 0x93,
0xF0, 0xCB, 0x56, 0x90, 0xC0, 0x46, 0x68, 0x15, 0x43, 0xCB, 0xE9, 0x98, 0xE3, 0xAF, 0x31, 0x25,
0x4D, 0x7B, 0xF3, 0xB1, 0x74, 0xE2, 0x64, 0xAC, 0xD9, 0xF6, 0xA0, 0xD5, 0x0B, 0x9B, 0x49, 0x52,
0x69, 0x3B, 0x71, 0x00, 0x2F, 0xBB, 0xBA, 0x08, 0xB1, 0xAE, 0xBB, 0xB3, 0xE1, 0xC9, 0xA6, 0x7F,
0x17, 0x97, 0x28, 0x72, 0x12, 0x6E, 0x91, 0xAE, 0x3A, 0xA2, 0x35, 0x46, 0x27, 0xF8, 0x12, 0x50
};
static const uint8_t _gsa1T2[256] = {
0xD8, 0x65, 0x04, 0xC2, 0x65, 0xD5, 0xB0, 0x0C, 0xDF, 0x9D, 0xF0, 0xC3, 0x9A, 0x17, 0xC9, 0xA6,
0xE1, 0xAC, 0x0D, 0x14, 0x2F, 0x3C, 0x2C, 0x87, 0xA2, 0xBF, 0x4D, 0x5F, 0xAC, 0x2D, 0x9D, 0xE1,
0x0C, 0x9C, 0xE7, 0x7F, 0xFC, 0xA8, 0x66, 0x59, 0xAC, 0x18, 0xD7, 0x05, 0xF0, 0xBF, 0xD1, 0x8B,
0x35, 0x9F, 0x59, 0xB4, 0xBA, 0x55, 0xB2, 0x85, 0xFD, 0xB1, 0x72, 0x06, 0x73, 0xA4, 0xDB, 0x48,
0x7B, 0x5F, 0x67, 0xA5, 0x95, 0xB9, 0xA5, 0x4A, 0xCF, 0xD1, 0x44, 0xF3, 0x81, 0xF5, 0x6D, 0xF6,
0x3A, 0xC3, 0x57, 0x83, 0xFA, 0x8E, 0x15, 0x2A, 0xA2, 0x04, 0xB2, 0x9D, 0xA8, 0x0D, 0x7F, 0xB8,
0x0F, 0xF6, 0xAC, 0xBE, 0x97, 0xCE, 0x16, 0xE6, 0x31, 0x10, 0x60, 0x16, 0xB5, 0x83, 0x45, 0xEE,
0xD7, 0x5F, 0x2C, 0x08, 0x58, 0xB1, 0xFD, 0x7E, 0x79, 0x00, 0x34, 0xAD, 0xB5, 0x31, 0x34, 0x39,
0xAF, 0xA8, 0xDD, 0x52, 0x6A, 0xB0, 0x60, 0x35, 0xB8, 0x1D, 0x52, 0xF5, 0xF5, 0x30, 0x00, 0x7B,
0xF4, 0xBA, 0x03, 0xCB, 0x3A, 0x84, 0x14, 0x8A, 0x6A, 0xEF, 0x21, 0xBD, 0x01, 0xD8, 0xA0, 0xD4,
0x43, 0xBE, 0x23, 0xE7, 0x76, 0x27, 0x2C, 0x3F, 0x4D, 0x3F, 0x43, 0x18, 0xA7, 0xC3, 0x47, 0xA5,
0x7A, 0x1D, 0x02, 0x55, 0x09, 0xD1, 0xFF, 0x55, 0x5E, 0x17, 0xA0, 0x56, 0xF4, 0xC9, 0x6B, 0x90,
0xB4, 0x80, 0xA5, 0x07, 0x22, 0xFB, 0x22, 0x0D, 0xD9, 0xC0, 0x5B, 0x08, 0x35, 0x05, 0xC1, 0x75,
0x4F, 0xD0, 0x51, 0x2D, 0x2E, 0x5E, 0x69, 0xE7, 0x3B, 0xC2, 0xDA, 0xFF, 0xF6, 0xCE, 0x3E, 0x76,
0xE8, 0x36, 0x8C, 0x39, 0xD8, 0xF3, 0xE9, 0xA6, 0x42, 0xE6, 0xC1, 0x4C, 0x05, 0xBE, 0x17, 0xF2,
0x5C, 0x1B, 0x19, 0xDB, 0x0F, 0xF3, 0xF8, 0x49, 0xEB, 0x36, 0xF6, 0x40, 0x6F, 0xAD, 0xC1, 0x8C
};
static const uint8_t _par3T1[256] = {
0xD0, 0xFF, 0xBA, 0xE5, 0xC1, 0xC7, 0xDB, 0x5B, 0x16, 0xE3, 0x6E, 0x26, 0x62, 0x31, 0x2E, 0x2A,
0xD1, 0xBB, 0x4A, 0xE6, 0xAE, 0x2F, 0x0A, 0x90, 0x29, 0x90, 0xB6, 0x67, 0x58, 0x2A, 0xB4, 0x45,
0x7B, 0xCB, 0xF0, 0x73, 0x84, 0x30, 0x81, 0xC2, 0xD7, 0xBE, 0x89, 0xD7, 0x4E, 0x73, 0x5C, 0xC7,
0x80, 0x1B, 0xE5, 0xE4, 0x43, 0xC7, 0x46, 0xD6, 0x6F, 0x7B, 0xBF, 0xED, 0xE5, 0x27, 0xD1, 0xB5,
0xD0, 0xD8, 0xA3, 0xCB, 0x2B, 0x30, 0xA4, 0xF0, 0x84, 0x14, 0x72, 0x5C, 0xFF, 0xA4, 0xFB, 0x54,
0x9D, 0x70, 0xE2, 0xFF, 0xBE, 0xE8, 0x24, 0x76, 0xE5, 0x15, 0xFB, 0x1A, 0xBC, 0x87, 0x02, 0x2A,
0x58, 0x8F, 0x9A, 0x95, 0xBD, 0xAE, 0x8D, 0x0C, 0xA5, 0x4C, 0xF2, 0x5C, 0x7D, 0xAD, 0x51, 0xFB,
0xB1, 0x22, 0x07, 0xE0, 0x29, 0x7C, 0xEB, 0x98, 0x14, 0xC6, 0x31, 0x97, 0xE4, 0x34, 0x8F, 0xCC,
0x99, 0x56, 0x9F, 0x78, 0x43, 0x91, 0x85, 0x3F, 0xC2, 0xD0, 0xD1, 0x80, 0xD1, 0x77, 0xA7, 0xE2,
0x43, 0x99, 0x1D, 0x2F, 0x8B, 0x6A, 0xE4, 0x66, 0x82, 0xF7, 0x2B, 0x0B, 0x65, 0x14, 0xC0, 0xC2,
0x1D, 0x96, 0x78, 0x1C, 0xC4, 0xC3, 0xD2, 0xB1, 0x64, 0x07, 0xD7, 0x6F, 0x02, 0xE9, 0x44, 0x31,
0xDB, 0x3C, 0xEB, 0x93, 0xED, 0x9A, 0x57, 0x05, 0xB9, 0x0E, 0xAF, 0x1F, 0x48, 0x11, 0xDC, 0x35,
0x6C, 0xB8, 0xEE, 0x2A, 0x48, 0x2B, 0xBC, 0x89, 0x12, 0x59, 0xCB, 0xD1, 0x18, 0xEA, 0x72, 0x11,
0x01, 0x75, 0x3B, 0xB5, 0x56, 0xF4, 0x8B, 0xA0, 0x41, 0x75, 0x86, 0x7B, 0x94, 0x12, 0x2D, 0x4C,
0x0C, 0x22, 0xC9, 0x4A, 0xD8, 0xB1, 0x8D, 0xF0, 0x55, 0x2E, 0x77, 0x50, 0x1C, 0x64, 0x77, 0xAA,
0x3E, 0xAC, 0xD3, 0x3D, 0xCE, 0x60, 0xCA, 0x5D, 0xA0, 0x92, 0x78, 0xC6, 0x51, 0xFE, 0xF9, 0x30
};
static const uint8_t _par3T2[256] = {
0xAA, 0xAF, 0xF0, 0x72, 0x90, 0xF7, 0x71, 0x27, 0x06, 0x11, 0xEB, 0x9C, 0x37, 0x12, 0x72, 0xAA,
0x65, 0xBC, 0x0D, 0x4A, 0x76, 0xF6, 0x5C, 0xAA, 0xB0, 0x7A, 0x7D, 0x81, 0xC1, 0xCE, 0x2F, 0x9F,
0x02, 0x75, 0x38, 0xC8, 0xFC, 0x66, 0x05, 0xC2, 0x2C, 0xBD, 0x91, 0xAD, 0x03, 0xB1, 0x88, 0x93,
0x31, 0xC6, 0xAB, 0x40, 0x23, 0x43, 0x76, 0x54, 0xCA, 0xE7, 0x00, 0x96, 0x9F, 0xD8, 0x24, 0x8B,
0xE4, 0xDC, 0xDE, 0x48, 0x2C, 0xCB, 0xF7, 0x84, 0x1D, 0x45, 0xE5, 0xF1, 0x75, 0xA0, 0xED, 0xCD,
0x4B, 0x24, 0x8A, 0xB3, 0x98, 0x7B, 0x12, 0xB8, 0xF5, 0x63, 0x97, 0xB3, 0xA6, 0xA6, 0x0B, 0xDC,
0xD8, 0x4C, 0xA8, 0x99, 0x27, 0x0F, 0x8F, 0x94, 0x63, 0x0F, 0xB0, 0x11, 0x94, 0xC7, 0xE9, 0x7F,
0x3B, 0x40, 0x72, 0x4C, 0xDB, 0x84, 0x78, 0xFE, 0xB8, 0x56, 0x08, 0x80, 0xDF, 0x20, 0x2F, 0xB9,
0x66, 0x2D, 0x60, 0x63, 0xF5, 0x18, 0x15, 0x1B, 0x86, 0x85, 0xB9, 0xB4, 0x68, 0x0E, 0xC6, 0xD1,
0x8A, 0x81, 0x2B, 0xB3, 0xF6, 0x48, 0xF0, 0x4F, 0x9C, 0x28, 0x1C, 0xA4, 0x51, 0x2F, 0xD7, 0x4B,
0x17, 0xE7, 0xCC, 0x50, 0x9F, 0xD0, 0xD1, 0x40, 0x0C, 0x0D, 0xCA, 0x83, 0xFA, 0x5E, 0xCA, 0xEC,
0xBF, 0x4E, 0x7C, 0x8F, 0xF0, 0xAE, 0xC2, 0xD3, 0x28, 0x41, 0x9B, 0xC8, 0x04, 0xB9, 0x4A, 0xBA,
0x72, 0xE2, 0xB5, 0x06, 0x2C, 0x1E, 0x0B, 0x2C, 0x7F, 0x11, 0xA9, 0x26, 0x51, 0x9D, 0x3F, 0xF8,
0x62, 0x11, 0x2E, 0x89, 0xD2, 0x9D, 0x35, 0xB1, 0xE4, 0x0A, 0x4D, 0x93, 0x01, 0xA7, 0xD1, 0x2D,
0x00, 0x87, 0xE2, 0x2D, 0xA4, 0xE9, 0x0A, 0x06, 0x66, 0xF8, 0x1F, 0x44, 0x75, 0xB5, 0x6B, 0x1C,
0xFC, 0x31, 0x09, 0x48, 0xA3, 0xFF, 0x92, 0x12, 0x58, 0xE9, 0xFA, 0xAE, 0x4F, 0xE2, 0xB4, 0xCC
};
static int32_t _readMem(struct ARMCore* cpu, uint32_t address, int width) { static int32_t _readMem(struct ARMCore* cpu, uint32_t address, int width) {
switch (width) { switch (width) {
case 1: case 1:
@ -122,455 +45,10 @@ static void _writeMem(struct ARMCore* cpu, uint32_t address, int width, int32_t
} }
} }
static int _hexDigit(char digit) { void GBACheatRegisterLine(struct GBACheatSet* cheats, const char* line) {
switch (digit) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return digit - '0';
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
return digit - 'a' + 10;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
return digit - 'A' + 10;
default:
return -1;
}
}
static const char* _hex32(const char* line, uint32_t* out) {
uint32_t value = 0;
int i;
for (i = 0; i < 8; ++i, ++line) {
char digit = *line;
value <<= 4;
int nybble = _hexDigit(digit);
if (nybble < 0) {
return 0;
}
value |= nybble;
}
*out = value;
return line;
}
static const char* _hex16(const char* line, uint16_t* out) {
uint16_t value = 0;
*out = 0;
int i;
for (i = 0; i < 4; ++i, ++line) {
char digit = *line;
value <<= 4;
int nybble = _hexDigit(digit);
if (nybble < 0) {
return 0;
}
value |= nybble;
}
*out = value;
return line;
}
static void _registerLine(struct GBACheatSet* cheats, const char* line) {
*StringListAppend(&cheats->lines) = strdup(line); *StringListAppend(&cheats->lines) = strdup(line);
} }
// http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm
static void _decryptGameShark(uint32_t* op1, uint32_t* op2, const uint32_t* seeds) {
uint32_t sum = 0xC6EF3720;
int i;
for (i = 0; i < 32; ++i) {
*op2 -= ((*op1 << 4) + seeds[2]) ^ (*op1 + sum) ^ ((*op1 >> 5) + seeds[3]);
*op1 -= ((*op2 << 4) + seeds[0]) ^ (*op2 + sum) ^ ((*op2 >> 5) + seeds[1]);
sum -= 0x9E3779B9;
}
}
static void _reseedGameShark(uint32_t* seeds, uint16_t params, const uint8_t* t1, const uint8_t* t2) {
int x, y;
int s0 = params >> 8;
int s1 = params & 0xFF;
for (y = 0; y < 4; ++y) {
for (x = 0; x < 4; ++x) {
uint8_t z = t1[(s0 + x) & 0xFF] + t2[(s1 + y) & 0xFF];
seeds[y] <<= 8;
seeds[y] |= z;
}
}
}
static void _setGameSharkVersion(struct GBACheatSet* cheats, int version) {
cheats->gsaVersion = 1;
switch (version) {
case 1:
memcpy(cheats->gsaSeeds, _gsa1S, 4 * sizeof(uint32_t));
break;
case 3:
memcpy(cheats->gsaSeeds, _par3S, 4 * sizeof(uint32_t));
break;
}
}
static bool _addGSA1(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
enum GBAGameSharkType type = op1 >> 28;
struct GBACheat* cheat = 0;
if (cheats->incompleteCheat) {
if (cheats->remainingAddresses > 0) {
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op1;
cheat->operand = cheats->incompleteCheat->operand;
cheat->repeat = 1;
--cheats->remainingAddresses;
}
if (cheats->remainingAddresses > 0) {
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op2;
cheat->operand = cheats->incompleteCheat->operand;
cheat->repeat = 1;
--cheats->remainingAddresses;
}
if (cheats->remainingAddresses == 0) {
cheats->incompleteCheat = 0;
}
return true;
}
switch (type) {
case GSA_ASSIGN_1:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 1;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_ASSIGN_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 2;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_ASSIGN_4:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_ASSIGN_LIST:
cheats->remainingAddresses = (op1 & 0xFFFF) - 1;
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op2;
cheats->incompleteCheat = cheat;
break;
case GSA_PATCH:
cheats->romPatches[0].address = (op1 & 0xFFFFFF) << 1;
cheats->romPatches[0].newValue = op2;
cheats->romPatches[0].applied = false;
cheats->romPatches[0].exists = true;
return true;
case GSA_BUTTON:
// TODO: Implement button
GBALog(0, GBA_LOG_STUB, "GameShark button unimplemented");
return false;
case GSA_IF_EQ:
if (op1 == 0xDEADFACE) {
_reseedGameShark(cheats->gsaSeeds, op2, _gsa1T1, _gsa1T2);
return true;
}
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_EQ;
cheat->width = 2;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_IF_EQ_RANGE:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_EQ;
cheat->width = 2;
cheat->address = op2 & 0x0FFFFFFF;
cheat->operand = op1 & 0xFFFF;
cheat->repeat = (op1 >> 16) & 0xFF;
return true;
case GSA_HOOK:
if (cheats->hook) {
return false;
}
cheats->hook = malloc(sizeof(*cheats->hook));
cheats->hook->address = BASE_CART0 | (op1 & (SIZE_CART0 - 1));
cheats->hook->mode = MODE_THUMB;
cheats->hook->refs = 1;
cheats->hook->reentries = 0;
return true;
default:
return false;
}
cheat->operand = op2;
cheat->repeat = 1;
return true;
}
static uint32_t _parAddr(uint32_t x) {
return (x & 0xFFFFF) | ((x << 4) & 0x0F000000);
}
static void _parEndBlock(struct GBACheatSet* cheats) {
size_t size = GBACheatListSize(&cheats->list) - GBACheatListIndex(&cheats->list, cheats->currentBlock);
if (cheats->currentBlock->repeat) {
cheats->currentBlock->negativeRepeat = size - cheats->currentBlock->repeat;
} else {
cheats->currentBlock->repeat = size;
}
cheats->currentBlock = 0;
}
static void _parElseBlock(struct GBACheatSet* cheats) {
size_t size = GBACheatListSize(&cheats->list) - GBACheatListIndex(&cheats->list, cheats->currentBlock);
cheats->currentBlock->repeat = size;
}
static bool _addPAR3Cond(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
enum GBAActionReplay3Condition condition = op1 & PAR3_COND;
int width = 1 << ((op1 & PAR3_WIDTH) >> PAR3_WIDTH_BASE);
if (width > 4) {
// TODO: Always false conditions
return false;
}
if ((op1 & PAR3_ACTION) == PAR3_ACTION_DISABLE) {
// TODO: Codes that disable
return false;
}
struct GBACheat* cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op1);
cheat->width = width;
cheat->operand = op2 & (0xFFFFFFFFU >> ((4 - width) * 8));
cheat->addressOffset = 0;
cheat->operandOffset = 0;
switch (op1 & PAR3_ACTION) {
case PAR3_ACTION_NEXT:
cheat->repeat = 1;
cheat->negativeRepeat = 0;
break;
case PAR3_ACTION_NEXT_TWO:
cheat->repeat = 2;
cheat->negativeRepeat = 0;
break;
case PAR3_ACTION_BLOCK:
cheat->repeat = 0;
cheat->negativeRepeat = 0;
if (cheats->currentBlock) {
_parEndBlock(cheats);
}
cheats->currentBlock = cheat;
break;
}
switch (condition) {
case PAR3_COND_OTHER:
// We shouldn't be able to get here
GBALog(0, GBA_LOG_ERROR, "Unexpectedly created 'other' PARv3 code");
cheat->type = CHEAT_IF_LAND;
cheat->operand = 0;
break;
case PAR3_COND_EQ:
cheat->type = CHEAT_IF_EQ;
break;
case PAR3_COND_NE:
cheat->type = CHEAT_IF_NE;
break;
case PAR3_COND_LT:
cheat->type = CHEAT_IF_LT;
break;
case PAR3_COND_GT:
cheat->type = CHEAT_IF_GT;
break;
case PAR3_COND_ULT:
cheat->type = CHEAT_IF_ULT;
break;
case PAR3_COND_UGT:
cheat->type = CHEAT_IF_UGT;
break;
case PAR3_COND_LAND:
cheat->type = CHEAT_IF_LAND;
break;
}
return true;
}
static bool _addPAR3Special(struct GBACheatSet* cheats, uint32_t op2) {
struct GBACheat* cheat;
switch (op2 & 0xFF000000) {
case PAR3_OTHER_SLOWDOWN:
// TODO: Slowdown
return false;
case PAR3_OTHER_BUTTON_1:
case PAR3_OTHER_BUTTON_2:
case PAR3_OTHER_BUTTON_4:
// TODO: Button
GBALog(0, GBA_LOG_STUB, "GameShark button unimplemented");
return false;
// TODO: Fix overriding existing patches
case PAR3_OTHER_PATCH_1:
cheats->romPatches[0].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[0].applied = false;
cheats->romPatches[0].exists = true;
cheats->incompletePatch = &cheats->romPatches[0];
break;
case PAR3_OTHER_PATCH_2:
cheats->romPatches[1].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[1].applied = false;
cheats->romPatches[1].exists = true;
cheats->incompletePatch = &cheats->romPatches[1];
break;
case PAR3_OTHER_PATCH_3:
cheats->romPatches[2].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[2].applied = false;
cheats->romPatches[2].exists = true;
cheats->incompletePatch = &cheats->romPatches[2];
break;
case PAR3_OTHER_PATCH_4:
cheats->romPatches[3].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[3].applied = false;
cheats->romPatches[3].exists = true;
cheats->incompletePatch = &cheats->romPatches[3];
break;
case PAR3_OTHER_ENDIF:
if (cheats->currentBlock) {
_parEndBlock(cheats);
return true;
}
return false;
case PAR3_OTHER_ELSE:
if (cheats->currentBlock) {
_parElseBlock(cheats);
return true;
}
return false;
case PAR3_OTHER_FILL_1:
cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op2);
cheat->width = 1;
cheats->incompleteCheat = cheat;
break;
case PAR3_OTHER_FILL_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op2);
cheat->width = 2;
cheats->incompleteCheat = cheat;
break;
case PAR3_OTHER_FILL_4:
cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op2);
cheat->width = 3;
cheats->incompleteCheat = cheat;
break;
}
return true;
}
static bool _addPAR3(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
if (cheats->incompletePatch) {
cheats->incompletePatch->newValue = op1;
cheats->incompletePatch = 0;
return true;
}
if (cheats->incompleteCheat) {
cheats->incompleteCheat->operand = op1 & (0xFFFFFFFFU >> ((4 - cheats->incompleteCheat->width) * 8));
cheats->incompleteCheat->addressOffset = op2 >> 24;
cheats->incompleteCheat->repeat = (op2 >> 16) & 0xFF;
cheats->incompleteCheat->addressOffset = (op2 & 0xFFFF) * cheats->incompleteCheat->width;
cheats->incompleteCheat = 0;
return true;
}
if (op2 == 0x001DC0DE) {
return true;
}
switch (op1) {
case 0x00000000:
return _addPAR3Special(cheats, op2);
case 0xDEADFACE:
_reseedGameShark(cheats->gsaSeeds, op2, _par3T1, _par3T2);
return true;
}
if (op1 >> 24 == 0xC4) {
if (cheats->hook) {
return false;
}
cheats->hook = malloc(sizeof(*cheats->hook));
cheats->hook->address = BASE_CART0 | (op1 & (SIZE_CART0 - 1));
cheats->hook->mode = MODE_THUMB;
cheats->hook->refs = 1;
cheats->hook->reentries = 0;
return true;
}
if (op1 & PAR3_COND) {
return _addPAR3Cond(cheats, op1, op2);
}
int width = 1 << ((op1 & PAR3_WIDTH) >> PAR3_WIDTH_BASE);
struct GBACheat* cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op1);
cheat->operandOffset = 0;
cheat->addressOffset = 0;
cheat->repeat = 1;
switch (op1 & PAR3_BASE) {
case PAR3_BASE_ASSIGN:
cheat->type = CHEAT_ASSIGN;
cheat->addressOffset = width;
if (width < 4) {
cheat->repeat = (op2 >> (width * 8)) + 1;
}
break;
case PAR3_BASE_INDIRECT:
cheat->type = CHEAT_ASSIGN_INDIRECT;
if (width < 4) {
cheat->addressOffset = (op2 >> (width * 8)) * width;
}
break;
case PAR3_BASE_ADD:
cheat->type = CHEAT_ADD;
break;
case PAR3_BASE_OTHER:
width = ((op1 >> 24) & 1) + 1;
cheat->type = CHEAT_ASSIGN;
cheat->address = BASE_IO | (op1 & OFFSET_MASK);
break;
}
cheat->width = width;
cheat->operand = op2 & (0xFFFFFFFFU >> ((4 - width) * 8));
return true;
}
static void _addBreakpoint(struct GBACheatDevice* device, struct GBACheatSet* cheats) { static void _addBreakpoint(struct GBACheatDevice* device, struct GBACheatSet* cheats) {
if (!device->p || !cheats->hook) { if (!device->p || !cheats->hook) {
return; return;
@ -708,237 +186,35 @@ void GBACheatRemoveSet(struct GBACheatDevice* device, struct GBACheatSet* cheats
_removeBreakpoint(device, cheats); _removeBreakpoint(device, cheats);
} }
bool GBACheatAddCodeBreaker(struct GBACheatSet* cheats, uint32_t op1, uint16_t op2) {
char line[14] = "XXXXXXXX XXXX";
snprintf(line, sizeof(line), "%08X %04X", op1, op2);
_registerLine(cheats, line);
enum GBACodeBreakerType type = op1 >> 28;
struct GBACheat* cheat = 0;
if (cheats->incompleteCheat) {
cheats->incompleteCheat->repeat = op1 & 0xFFFF;
cheats->incompleteCheat->addressOffset = op2;
cheats->incompleteCheat->operandOffset = 0;
cheats->incompleteCheat = 0;
return true;
}
switch (type) {
case CB_GAME_ID:
// TODO: Run checksum
return true;
case CB_HOOK:
if (cheats->hook) {
return false;
}
cheats->hook = malloc(sizeof(*cheats->hook));
cheats->hook->address = BASE_CART0 | (op1 & (SIZE_CART0 - 1));
cheats->hook->mode = MODE_THUMB;
cheats->hook->refs = 1;
cheats->hook->reentries = 0;
return true;
case CB_OR_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_OR;
cheat->width = 2;
break;
case CB_ASSIGN_1:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 1;
break;
case CB_FILL:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 2;
cheats->incompleteCheat = cheat;
break;
case CB_FILL_8:
GBALog(0, GBA_LOG_STUB, "[Cheat] CodeBreaker code %08X %04X not supported", op1, op2);
return false;
case CB_AND_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_AND;
cheat->width = 2;
break;
case CB_IF_EQ:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_EQ;
cheat->width = 2;
break;
case CB_ASSIGN_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 2;
break;
case CB_ENCRYPT:
GBALog(0, GBA_LOG_STUB, "[Cheat] CodeBreaker encryption not supported");
return false;
case CB_IF_NE:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_NE;
cheat->width = 2;
break;
case CB_IF_GT:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_GT;
cheat->width = 2;
break;
case CB_IF_LT:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_LT;
cheat->width = 2;
break;
case CB_IF_SPECIAL:
switch (op1 & 0x0FFFFFFF) {
case 0x20:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_AND;
cheat->width = 2;
cheat->address = BASE_IO | REG_JOYSTAT;
cheat->operand = op2;
cheat->repeat = 1;
return true;
default:
GBALog(0, GBA_LOG_STUB, "[Cheat] CodeBreaker code %08X %04X not supported", op1, op2);
return false;
}
case CB_ADD_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ADD;
cheat->width = 2;
break;
case CB_IF_AND:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_AND;
cheat->width = 2;
break;
}
cheat->address = op1 & 0x0FFFFFFF;
cheat->operand = op2;
cheat->repeat = 1;
cheat->negativeRepeat = 0;
return true;
}
bool GBACheatAddCodeBreakerLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1;
uint16_t op2;
line = _hex32(line, &op1);
if (!line) {
return false;
}
while (*line == ' ') {
++line;
}
line = _hex16(line, &op2);
if (!line) {
return false;
}
return GBACheatAddCodeBreaker(cheats, op1, op2);
}
bool GBACheatAddGameShark(struct GBACheatSet* set, uint32_t op1, uint32_t op2) {
uint32_t o1 = op1;
uint32_t o2 = op2;
char line[18] = "XXXXXXXX XXXXXXXX";
snprintf(line, sizeof(line), "%08X %08X", op1, op2);
_registerLine(set, line);
switch (set->gsaVersion) {
case 0:
_setGameSharkVersion(set, 1);
// Fall through
case 1:
_decryptGameShark(&o1, &o2, set->gsaSeeds);
return _addGSA1(set, o1, o2);
}
return false;
}
bool GBACheatAddGameSharkLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1;
uint32_t op2;
line = _hex32(line, &op1);
if (!line) {
return false;
}
while (*line == ' ') {
++line;
}
line = _hex32(line, &op2);
if (!line) {
return false;
}
return GBACheatAddGameShark(cheats, op1, op2);
}
bool GBACheatAddProActionReplay(struct GBACheatSet* set, uint32_t op1, uint32_t op2) {
uint32_t o1 = op1;
uint32_t o2 = op2;
char line[18] = "XXXXXXXX XXXXXXXX";
snprintf(line, sizeof(line), "%08X %08X", op1, op2);
_registerLine(set, line);
switch (set->gsaVersion) {
case 0:
_setGameSharkVersion(set, 3);
// Fall through
case 1:
_decryptGameShark(&o1, &o2, set->gsaSeeds);
return _addPAR3(set, o1, o2);
}
return false;
}
bool GBACheatAddProActionReplayLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1;
uint32_t op2;
line = _hex32(line, &op1);
if (!line) {
return false;
}
while (*line == ' ') {
++line;
}
line = _hex32(line, &op2);
if (!line) {
return false;
}
return GBACheatAddProActionReplay(cheats, op1, op2);
}
bool GBACheatAddAutodetect(struct GBACheatSet* set, uint32_t op1, uint32_t op2) { bool GBACheatAddAutodetect(struct GBACheatSet* set, uint32_t op1, uint32_t op2) {
uint32_t o1 = op1; uint32_t o1 = op1;
uint32_t o2 = op2; uint32_t o2 = op2;
char line[18] = "XXXXXXXX XXXXXXXX"; char line[18] = "XXXXXXXX XXXXXXXX";
snprintf(line, sizeof(line), "%08X %08X", op1, op2); snprintf(line, sizeof(line), "%08X %08X", op1, op2);
_registerLine(set, line); GBACheatRegisterLine(set, line);
switch (set->gsaVersion) { switch (set->gsaVersion) {
case 0: case 0:
// Try to detect GameShark version // Try to detect GameShark version
_decryptGameShark(&o1, &o2, _gsa1S); GBACheatDecryptGameShark(&o1, &o2, GBACheatGameSharkSeeds);
if ((o1 & 0xF0000000) == 0xF0000000 && !(o2 & 0xFFFFFCFE)) { if ((o1 & 0xF0000000) == 0xF0000000 && !(o2 & 0xFFFFFCFE)) {
_setGameSharkVersion(set, 1); GBACheatSetGameSharkVersion(set, 1);
return _addGSA1(set, o1, o2); return GBACheatAddGameSharkRaw(set, o1, o2);
} }
o1 = op1; o1 = op1;
o2 = op2; o2 = op2;
_decryptGameShark(&o1, &o2, _par3S); GBACheatDecryptGameShark(&o1, &o2, GBACheatProActionReplaySeeds);
if ((o1 & 0xFE000000) == 0xC4000000 && !(o2 & 0xFFFF0000)) { if ((o1 & 0xFE000000) == 0xC4000000 && !(o2 & 0xFFFF0000)) {
_setGameSharkVersion(set, 3); GBACheatSetGameSharkVersion(set, 3);
return _addPAR3(set, o1, o2); return GBACheatAddProActionReplayRaw(set, o1, o2);
} }
break; break;
case 1: case 1:
_decryptGameShark(&o1, &o2, set->gsaSeeds); GBACheatDecryptGameShark(&o1, &o2, set->gsaSeeds);
return _addGSA1(set, o1, o2); return GBACheatAddGameSharkRaw(set, o1, o2);
case 3: case 3:
_decryptGameShark(&o1, &o2, set->gsaSeeds); GBACheatDecryptGameShark(&o1, &o2, set->gsaSeeds);
return _addPAR3(set, o1, o2); return GBACheatAddProActionReplayRaw(set, o1, o2);
} }
return false; return false;
} }
@ -946,14 +222,14 @@ bool GBACheatAddAutodetect(struct GBACheatSet* set, uint32_t op1, uint32_t op2)
bool GBACheatAutodetectLine(struct GBACheatSet* cheats, const char* line) { bool GBACheatAutodetectLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1; uint32_t op1;
uint32_t op2; uint32_t op2;
line = _hex32(line, &op1); line = hex32(line, &op1);
if (!line) { if (!line) {
return false; return false;
} }
while (*line == ' ') { while (*line == ' ') {
++line; ++line;
} }
line = _hex32(line, &op2); line = hex32(line, &op2);
if (!line) { if (!line) {
return false; return false;
} }
@ -994,7 +270,7 @@ bool GBACheatParseFile(struct GBACheatDevice* device, struct VFile* vf) {
if (set && !reset) { if (set && !reset) {
GBACheatSetCopyProperties(newSet, set); GBACheatSetCopyProperties(newSet, set);
} else { } else {
_setGameSharkVersion(newSet, gsaVersion); GBACheatSetGameSharkVersion(newSet, gsaVersion);
} }
reset = false; reset = false;
set = newSet; set = newSet;
@ -1023,7 +299,7 @@ bool GBACheatParseFile(struct GBACheatDevice* device, struct VFile* vf) {
GBACheatSetInit(set, 0); GBACheatSetInit(set, 0);
set->enabled = !nextDisabled; set->enabled = !nextDisabled;
nextDisabled = false; nextDisabled = false;
_setGameSharkVersion(set, gsaVersion); GBACheatSetGameSharkVersion(set, gsaVersion);
} }
GBACheatAddLine(set, cheat); GBACheatAddLine(set, cheat);
break; break;
@ -1087,21 +363,21 @@ bool GBACheatAddLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1; uint32_t op1;
uint16_t op2; uint16_t op2;
uint16_t op3; uint16_t op3;
line = _hex32(line, &op1); line = hex32(line, &op1);
if (!line) { if (!line) {
return false; return false;
} }
while (isspace(line[0])) { while (isspace(line[0])) {
++line; ++line;
} }
line = _hex16(line, &op2); line = hex16(line, &op2);
if (!line) { if (!line) {
return false; return false;
} }
if (!line[0] || isspace(line[0])) { if (!line[0] || isspace(line[0])) {
return GBACheatAddCodeBreaker(cheats, op1, op2); return GBACheatAddCodeBreaker(cheats, op1, op2);
} }
line = _hex16(line, &op3); line = hex16(line, &op3);
if (!line) { if (!line) {
return false; return false;
} }

13
src/gba/cheats/cheats-private.h Normal file
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@ -0,0 +1,13 @@
/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GBA_CHEATS_PRIVATE_H
#define GBA_CHEATS_PRIVATE_H
#include "gba/cheats.h"
void GBACheatRegisterLine(struct GBACheatSet* set, const char* line);
#endif

143
src/gba/cheats/codebreaker.c Normal file
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@ -0,0 +1,143 @@
/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gba/cheats.h"
#include "gba/cheats/cheats-private.h"
#include "gba/gba.h"
#include "gba/io.h"
#include "util/string.h"
bool GBACheatAddCodeBreaker(struct GBACheatSet* cheats, uint32_t op1, uint16_t op2) {
char line[14] = "XXXXXXXX XXXX";
snprintf(line, sizeof(line), "%08X %04X", op1, op2);
GBACheatRegisterLine(cheats, line);
enum GBACodeBreakerType type = op1 >> 28;
struct GBACheat* cheat = 0;
if (cheats->incompleteCheat) {
cheats->incompleteCheat->repeat = op1 & 0xFFFF;
cheats->incompleteCheat->addressOffset = op2;
cheats->incompleteCheat->operandOffset = 0;
cheats->incompleteCheat = 0;
return true;
}
switch (type) {
case CB_GAME_ID:
// TODO: Run checksum
return true;
case CB_HOOK:
if (cheats->hook) {
return false;
}
cheats->hook = malloc(sizeof(*cheats->hook));
cheats->hook->address = BASE_CART0 | (op1 & (SIZE_CART0 - 1));
cheats->hook->mode = MODE_THUMB;
cheats->hook->refs = 1;
cheats->hook->reentries = 0;
return true;
case CB_OR_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_OR;
cheat->width = 2;
break;
case CB_ASSIGN_1:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 1;
break;
case CB_FILL:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 2;
cheats->incompleteCheat = cheat;
break;
case CB_FILL_8:
GBALog(0, GBA_LOG_STUB, "[Cheat] CodeBreaker code %08X %04X not supported", op1, op2);
return false;
case CB_AND_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_AND;
cheat->width = 2;
break;
case CB_IF_EQ:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_EQ;
cheat->width = 2;
break;
case CB_ASSIGN_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 2;
break;
case CB_ENCRYPT:
GBALog(0, GBA_LOG_STUB, "[Cheat] CodeBreaker encryption not supported");
return false;
case CB_IF_NE:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_NE;
cheat->width = 2;
break;
case CB_IF_GT:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_GT;
cheat->width = 2;
break;
case CB_IF_LT:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_LT;
cheat->width = 2;
break;
case CB_IF_SPECIAL:
switch (op1 & 0x0FFFFFFF) {
case 0x20:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_AND;
cheat->width = 2;
cheat->address = BASE_IO | REG_JOYSTAT;
cheat->operand = op2;
cheat->repeat = 1;
return true;
default:
GBALog(0, GBA_LOG_STUB, "[Cheat] CodeBreaker code %08X %04X not supported", op1, op2);
return false;
}
case CB_ADD_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ADD;
cheat->width = 2;
break;
case CB_IF_AND:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_AND;
cheat->width = 2;
break;
}
cheat->address = op1 & 0x0FFFFFFF;
cheat->operand = op2;
cheat->repeat = 1;
cheat->negativeRepeat = 0;
return true;
}
bool GBACheatAddCodeBreakerLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1;
uint16_t op2;
line = hex32(line, &op1);
if (!line) {
return false;
}
while (*line == ' ') {
++line;
}
line = hex16(line, &op2);
if (!line) {
return false;
}
return GBACheatAddCodeBreaker(cheats, op1, op2);
}

224
src/gba/cheats/gameshark.c Normal file
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@ -0,0 +1,224 @@
/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "gameshark.h"
#include "gba/cheats/cheats-private.h"
#include "gba/cheats/parv3.h"
#include "gba/gba.h"
#include "util/string.h"
const uint32_t GBACheatGameSharkSeeds[4] = { 0x09F4FBBD, 0x9681884A, 0x352027E9, 0xF3DEE5A7 };
static const uint8_t _gsa1T1[256] = {
0x31, 0x1C, 0x23, 0xE5, 0x89, 0x8E, 0xA1, 0x37, 0x74, 0x6D, 0x67, 0xFC, 0x1F, 0xC0, 0xB1, 0x94,
0x3B, 0x05, 0x56, 0x86, 0x00, 0x24, 0xF0, 0x17, 0x72, 0xA2, 0x3D, 0x1B, 0xE3, 0x17, 0xC5, 0x0B,
0xB9, 0xE2, 0xBD, 0x58, 0x71, 0x1B, 0x2C, 0xFF, 0xE4, 0xC9, 0x4C, 0x5E, 0xC9, 0x55, 0x33, 0x45,
0x7C, 0x3F, 0xB2, 0x51, 0xFE, 0x10, 0x7E, 0x75, 0x3C, 0x90, 0x8D, 0xDA, 0x94, 0x38, 0xC3, 0xE9,
0x95, 0xEA, 0xCE, 0xA6, 0x06, 0xE0, 0x4F, 0x3F, 0x2A, 0xE3, 0x3A, 0xE4, 0x43, 0xBD, 0x7F, 0xDA,
0x55, 0xF0, 0xEA, 0xCB, 0x2C, 0xA8, 0x47, 0x61, 0xA0, 0xEF, 0xCB, 0x13, 0x18, 0x20, 0xAF, 0x3E,
0x4D, 0x9E, 0x1E, 0x77, 0x51, 0xC5, 0x51, 0x20, 0xCF, 0x21, 0xF9, 0x39, 0x94, 0xDE, 0xDD, 0x79,
0x4E, 0x80, 0xC4, 0x9D, 0x94, 0xD5, 0x95, 0x01, 0x27, 0x27, 0xBD, 0x6D, 0x78, 0xB5, 0xD1, 0x31,
0x6A, 0x65, 0x74, 0x74, 0x58, 0xB3, 0x7C, 0xC9, 0x5A, 0xED, 0x50, 0x03, 0xC4, 0xA2, 0x94, 0x4B,
0xF0, 0x58, 0x09, 0x6F, 0x3E, 0x7D, 0xAE, 0x7D, 0x58, 0xA0, 0x2C, 0x91, 0xBB, 0xE1, 0x70, 0xEB,
0x73, 0xA6, 0x9A, 0x44, 0x25, 0x90, 0x16, 0x62, 0x53, 0xAE, 0x08, 0xEB, 0xDC, 0xF0, 0xEE, 0x77,
0xC2, 0xDE, 0x81, 0xE8, 0x30, 0x89, 0xDB, 0xFE, 0xBC, 0xC2, 0xDF, 0x26, 0xE9, 0x8B, 0xD6, 0x93,
0xF0, 0xCB, 0x56, 0x90, 0xC0, 0x46, 0x68, 0x15, 0x43, 0xCB, 0xE9, 0x98, 0xE3, 0xAF, 0x31, 0x25,
0x4D, 0x7B, 0xF3, 0xB1, 0x74, 0xE2, 0x64, 0xAC, 0xD9, 0xF6, 0xA0, 0xD5, 0x0B, 0x9B, 0x49, 0x52,
0x69, 0x3B, 0x71, 0x00, 0x2F, 0xBB, 0xBA, 0x08, 0xB1, 0xAE, 0xBB, 0xB3, 0xE1, 0xC9, 0xA6, 0x7F,
0x17, 0x97, 0x28, 0x72, 0x12, 0x6E, 0x91, 0xAE, 0x3A, 0xA2, 0x35, 0x46, 0x27, 0xF8, 0x12, 0x50
};
static const uint8_t _gsa1T2[256] = {
0xD8, 0x65, 0x04, 0xC2, 0x65, 0xD5, 0xB0, 0x0C, 0xDF, 0x9D, 0xF0, 0xC3, 0x9A, 0x17, 0xC9, 0xA6,
0xE1, 0xAC, 0x0D, 0x14, 0x2F, 0x3C, 0x2C, 0x87, 0xA2, 0xBF, 0x4D, 0x5F, 0xAC, 0x2D, 0x9D, 0xE1,
0x0C, 0x9C, 0xE7, 0x7F, 0xFC, 0xA8, 0x66, 0x59, 0xAC, 0x18, 0xD7, 0x05, 0xF0, 0xBF, 0xD1, 0x8B,
0x35, 0x9F, 0x59, 0xB4, 0xBA, 0x55, 0xB2, 0x85, 0xFD, 0xB1, 0x72, 0x06, 0x73, 0xA4, 0xDB, 0x48,
0x7B, 0x5F, 0x67, 0xA5, 0x95, 0xB9, 0xA5, 0x4A, 0xCF, 0xD1, 0x44, 0xF3, 0x81, 0xF5, 0x6D, 0xF6,
0x3A, 0xC3, 0x57, 0x83, 0xFA, 0x8E, 0x15, 0x2A, 0xA2, 0x04, 0xB2, 0x9D, 0xA8, 0x0D, 0x7F, 0xB8,
0x0F, 0xF6, 0xAC, 0xBE, 0x97, 0xCE, 0x16, 0xE6, 0x31, 0x10, 0x60, 0x16, 0xB5, 0x83, 0x45, 0xEE,
0xD7, 0x5F, 0x2C, 0x08, 0x58, 0xB1, 0xFD, 0x7E, 0x79, 0x00, 0x34, 0xAD, 0xB5, 0x31, 0x34, 0x39,
0xAF, 0xA8, 0xDD, 0x52, 0x6A, 0xB0, 0x60, 0x35, 0xB8, 0x1D, 0x52, 0xF5, 0xF5, 0x30, 0x00, 0x7B,
0xF4, 0xBA, 0x03, 0xCB, 0x3A, 0x84, 0x14, 0x8A, 0x6A, 0xEF, 0x21, 0xBD, 0x01, 0xD8, 0xA0, 0xD4,
0x43, 0xBE, 0x23, 0xE7, 0x76, 0x27, 0x2C, 0x3F, 0x4D, 0x3F, 0x43, 0x18, 0xA7, 0xC3, 0x47, 0xA5,
0x7A, 0x1D, 0x02, 0x55, 0x09, 0xD1, 0xFF, 0x55, 0x5E, 0x17, 0xA0, 0x56, 0xF4, 0xC9, 0x6B, 0x90,
0xB4, 0x80, 0xA5, 0x07, 0x22, 0xFB, 0x22, 0x0D, 0xD9, 0xC0, 0x5B, 0x08, 0x35, 0x05, 0xC1, 0x75,
0x4F, 0xD0, 0x51, 0x2D, 0x2E, 0x5E, 0x69, 0xE7, 0x3B, 0xC2, 0xDA, 0xFF, 0xF6, 0xCE, 0x3E, 0x76,
0xE8, 0x36, 0x8C, 0x39, 0xD8, 0xF3, 0xE9, 0xA6, 0x42, 0xE6, 0xC1, 0x4C, 0x05, 0xBE, 0x17, 0xF2,
0x5C, 0x1B, 0x19, 0xDB, 0x0F, 0xF3, 0xF8, 0x49, 0xEB, 0x36, 0xF6, 0x40, 0x6F, 0xAD, 0xC1, 0x8C
};
// http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm
void GBACheatDecryptGameShark(uint32_t* op1, uint32_t* op2, const uint32_t* seeds) {
uint32_t sum = 0xC6EF3720;
int i;
for (i = 0; i < 32; ++i) {
*op2 -= ((*op1 << 4) + seeds[2]) ^ (*op1 + sum) ^ ((*op1 >> 5) + seeds[3]);
*op1 -= ((*op2 << 4) + seeds[0]) ^ (*op2 + sum) ^ ((*op2 >> 5) + seeds[1]);
sum -= 0x9E3779B9;
}
}
void GBACheatReseedGameShark(uint32_t* seeds, uint16_t params, const uint8_t* t1, const uint8_t* t2) {
int x, y;
int s0 = params >> 8;
int s1 = params & 0xFF;
for (y = 0; y < 4; ++y) {
for (x = 0; x < 4; ++x) {
uint8_t z = t1[(s0 + x) & 0xFF] + t2[(s1 + y) & 0xFF];
seeds[y] <<= 8;
seeds[y] |= z;
}
}
}
void GBACheatSetGameSharkVersion(struct GBACheatSet* cheats, int version) {
cheats->gsaVersion = 1;
switch (version) {
case 1:
memcpy(cheats->gsaSeeds, GBACheatGameSharkSeeds, 4 * sizeof(uint32_t));
break;
case 3:
memcpy(cheats->gsaSeeds, GBACheatProActionReplaySeeds, 4 * sizeof(uint32_t));
break;
}
}
bool GBACheatAddGameSharkRaw(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
enum GBAGameSharkType type = op1 >> 28;
struct GBACheat* cheat = 0;
if (cheats->incompleteCheat) {
if (cheats->remainingAddresses > 0) {
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op1;
cheat->operand = cheats->incompleteCheat->operand;
cheat->repeat = 1;
--cheats->remainingAddresses;
}
if (cheats->remainingAddresses > 0) {
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op2;
cheat->operand = cheats->incompleteCheat->operand;
cheat->repeat = 1;
--cheats->remainingAddresses;
}
if (cheats->remainingAddresses == 0) {
cheats->incompleteCheat = 0;
}
return true;
}
switch (type) {
case GSA_ASSIGN_1:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 1;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_ASSIGN_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 2;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_ASSIGN_4:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_ASSIGN_LIST:
cheats->remainingAddresses = (op1 & 0xFFFF) - 1;
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_ASSIGN;
cheat->width = 4;
cheat->address = op2;
cheats->incompleteCheat = cheat;
break;
case GSA_PATCH:
cheats->romPatches[0].address = (op1 & 0xFFFFFF) << 1;
cheats->romPatches[0].newValue = op2;
cheats->romPatches[0].applied = false;
cheats->romPatches[0].exists = true;
return true;
case GSA_BUTTON:
// TODO: Implement button
GBALog(0, GBA_LOG_STUB, "GameShark button unimplemented");
return false;
case GSA_IF_EQ:
if (op1 == 0xDEADFACE) {
GBACheatReseedGameShark(cheats->gsaSeeds, op2, _gsa1T1, _gsa1T2);
return true;
}
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_EQ;
cheat->width = 2;
cheat->address = op1 & 0x0FFFFFFF;
break;
case GSA_IF_EQ_RANGE:
cheat = GBACheatListAppend(&cheats->list);
cheat->type = CHEAT_IF_EQ;
cheat->width = 2;
cheat->address = op2 & 0x0FFFFFFF;
cheat->operand = op1 & 0xFFFF;
cheat->repeat = (op1 >> 16) & 0xFF;
return true;
case GSA_HOOK:
if (cheats->hook) {
return false;
}
cheats->hook = malloc(sizeof(*cheats->hook));
cheats->hook->address = BASE_CART0 | (op1 & (SIZE_CART0 - 1));
cheats->hook->mode = MODE_THUMB;
cheats->hook->refs = 1;
cheats->hook->reentries = 0;
return true;
default:
return false;
}
cheat->operand = op2;
cheat->repeat = 1;
return true;
}
bool GBACheatAddGameShark(struct GBACheatSet* set, uint32_t op1, uint32_t op2) {
uint32_t o1 = op1;
uint32_t o2 = op2;
char line[18] = "XXXXXXXX XXXXXXXX";
snprintf(line, sizeof(line), "%08X %08X", op1, op2);
GBACheatRegisterLine(set, line);
switch (set->gsaVersion) {
case 0:
GBACheatSetGameSharkVersion(set, 1);
// Fall through
case 1:
GBACheatDecryptGameShark(&o1, &o2, set->gsaSeeds);
return GBACheatAddGameSharkRaw(set, o1, o2);
}
return false;
}
bool GBACheatAddGameSharkLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1;
uint32_t op2;
line = hex32(line, &op1);
if (!line) {
return false;
}
while (*line == ' ') {
++line;
}
line = hex32(line, &op2);
if (!line) {
return false;
}
return GBACheatAddGameShark(cheats, op1, op2);
}

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/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GBA_CHEATS_GAMESHARK_H
#define GBA_CHEATS_GAMESHARK_H
#include "gba/cheats.h"
extern const uint32_t GBACheatGameSharkSeeds[4];
void GBACheatDecryptGameShark(uint32_t* op1, uint32_t* op2, const uint32_t* seeds);
void GBACheatReseedGameShark(uint32_t* seeds, uint16_t params, const uint8_t* t1, const uint8_t* t2);
void GBACheatSetGameSharkVersion(struct GBACheatSet* cheats, int version);
bool GBACheatAddGameSharkRaw(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2);
#endif

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/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "parv3.h"
#include "gba/cheats/cheats-private.h"
#include "gba/cheats/gameshark.h"
#include "gba/gba.h"
#include "util/string.h"
const uint32_t GBACheatProActionReplaySeeds[4] = { 0x7AA9648F, 0x7FAE6994, 0xC0EFAAD5, 0x42712C57 };
static const uint8_t _par3T1[256] = {
0xD0, 0xFF, 0xBA, 0xE5, 0xC1, 0xC7, 0xDB, 0x5B, 0x16, 0xE3, 0x6E, 0x26, 0x62, 0x31, 0x2E, 0x2A,
0xD1, 0xBB, 0x4A, 0xE6, 0xAE, 0x2F, 0x0A, 0x90, 0x29, 0x90, 0xB6, 0x67, 0x58, 0x2A, 0xB4, 0x45,
0x7B, 0xCB, 0xF0, 0x73, 0x84, 0x30, 0x81, 0xC2, 0xD7, 0xBE, 0x89, 0xD7, 0x4E, 0x73, 0x5C, 0xC7,
0x80, 0x1B, 0xE5, 0xE4, 0x43, 0xC7, 0x46, 0xD6, 0x6F, 0x7B, 0xBF, 0xED, 0xE5, 0x27, 0xD1, 0xB5,
0xD0, 0xD8, 0xA3, 0xCB, 0x2B, 0x30, 0xA4, 0xF0, 0x84, 0x14, 0x72, 0x5C, 0xFF, 0xA4, 0xFB, 0x54,
0x9D, 0x70, 0xE2, 0xFF, 0xBE, 0xE8, 0x24, 0x76, 0xE5, 0x15, 0xFB, 0x1A, 0xBC, 0x87, 0x02, 0x2A,
0x58, 0x8F, 0x9A, 0x95, 0xBD, 0xAE, 0x8D, 0x0C, 0xA5, 0x4C, 0xF2, 0x5C, 0x7D, 0xAD, 0x51, 0xFB,
0xB1, 0x22, 0x07, 0xE0, 0x29, 0x7C, 0xEB, 0x98, 0x14, 0xC6, 0x31, 0x97, 0xE4, 0x34, 0x8F, 0xCC,
0x99, 0x56, 0x9F, 0x78, 0x43, 0x91, 0x85, 0x3F, 0xC2, 0xD0, 0xD1, 0x80, 0xD1, 0x77, 0xA7, 0xE2,
0x43, 0x99, 0x1D, 0x2F, 0x8B, 0x6A, 0xE4, 0x66, 0x82, 0xF7, 0x2B, 0x0B, 0x65, 0x14, 0xC0, 0xC2,
0x1D, 0x96, 0x78, 0x1C, 0xC4, 0xC3, 0xD2, 0xB1, 0x64, 0x07, 0xD7, 0x6F, 0x02, 0xE9, 0x44, 0x31,
0xDB, 0x3C, 0xEB, 0x93, 0xED, 0x9A, 0x57, 0x05, 0xB9, 0x0E, 0xAF, 0x1F, 0x48, 0x11, 0xDC, 0x35,
0x6C, 0xB8, 0xEE, 0x2A, 0x48, 0x2B, 0xBC, 0x89, 0x12, 0x59, 0xCB, 0xD1, 0x18, 0xEA, 0x72, 0x11,
0x01, 0x75, 0x3B, 0xB5, 0x56, 0xF4, 0x8B, 0xA0, 0x41, 0x75, 0x86, 0x7B, 0x94, 0x12, 0x2D, 0x4C,
0x0C, 0x22, 0xC9, 0x4A, 0xD8, 0xB1, 0x8D, 0xF0, 0x55, 0x2E, 0x77, 0x50, 0x1C, 0x64, 0x77, 0xAA,
0x3E, 0xAC, 0xD3, 0x3D, 0xCE, 0x60, 0xCA, 0x5D, 0xA0, 0x92, 0x78, 0xC6, 0x51, 0xFE, 0xF9, 0x30
};
static const uint8_t _par3T2[256] = {
0xAA, 0xAF, 0xF0, 0x72, 0x90, 0xF7, 0x71, 0x27, 0x06, 0x11, 0xEB, 0x9C, 0x37, 0x12, 0x72, 0xAA,
0x65, 0xBC, 0x0D, 0x4A, 0x76, 0xF6, 0x5C, 0xAA, 0xB0, 0x7A, 0x7D, 0x81, 0xC1, 0xCE, 0x2F, 0x9F,
0x02, 0x75, 0x38, 0xC8, 0xFC, 0x66, 0x05, 0xC2, 0x2C, 0xBD, 0x91, 0xAD, 0x03, 0xB1, 0x88, 0x93,
0x31, 0xC6, 0xAB, 0x40, 0x23, 0x43, 0x76, 0x54, 0xCA, 0xE7, 0x00, 0x96, 0x9F, 0xD8, 0x24, 0x8B,
0xE4, 0xDC, 0xDE, 0x48, 0x2C, 0xCB, 0xF7, 0x84, 0x1D, 0x45, 0xE5, 0xF1, 0x75, 0xA0, 0xED, 0xCD,
0x4B, 0x24, 0x8A, 0xB3, 0x98, 0x7B, 0x12, 0xB8, 0xF5, 0x63, 0x97, 0xB3, 0xA6, 0xA6, 0x0B, 0xDC,
0xD8, 0x4C, 0xA8, 0x99, 0x27, 0x0F, 0x8F, 0x94, 0x63, 0x0F, 0xB0, 0x11, 0x94, 0xC7, 0xE9, 0x7F,
0x3B, 0x40, 0x72, 0x4C, 0xDB, 0x84, 0x78, 0xFE, 0xB8, 0x56, 0x08, 0x80, 0xDF, 0x20, 0x2F, 0xB9,
0x66, 0x2D, 0x60, 0x63, 0xF5, 0x18, 0x15, 0x1B, 0x86, 0x85, 0xB9, 0xB4, 0x68, 0x0E, 0xC6, 0xD1,
0x8A, 0x81, 0x2B, 0xB3, 0xF6, 0x48, 0xF0, 0x4F, 0x9C, 0x28, 0x1C, 0xA4, 0x51, 0x2F, 0xD7, 0x4B,
0x17, 0xE7, 0xCC, 0x50, 0x9F, 0xD0, 0xD1, 0x40, 0x0C, 0x0D, 0xCA, 0x83, 0xFA, 0x5E, 0xCA, 0xEC,
0xBF, 0x4E, 0x7C, 0x8F, 0xF0, 0xAE, 0xC2, 0xD3, 0x28, 0x41, 0x9B, 0xC8, 0x04, 0xB9, 0x4A, 0xBA,
0x72, 0xE2, 0xB5, 0x06, 0x2C, 0x1E, 0x0B, 0x2C, 0x7F, 0x11, 0xA9, 0x26, 0x51, 0x9D, 0x3F, 0xF8,
0x62, 0x11, 0x2E, 0x89, 0xD2, 0x9D, 0x35, 0xB1, 0xE4, 0x0A, 0x4D, 0x93, 0x01, 0xA7, 0xD1, 0x2D,
0x00, 0x87, 0xE2, 0x2D, 0xA4, 0xE9, 0x0A, 0x06, 0x66, 0xF8, 0x1F, 0x44, 0x75, 0xB5, 0x6B, 0x1C,
0xFC, 0x31, 0x09, 0x48, 0xA3, 0xFF, 0x92, 0x12, 0x58, 0xE9, 0xFA, 0xAE, 0x4F, 0xE2, 0xB4, 0xCC
};
static uint32_t _parAddr(uint32_t x) {
return (x & 0xFFFFF) | ((x << 4) & 0x0F000000);
}
static void _parEndBlock(struct GBACheatSet* cheats) {
size_t size = GBACheatListSize(&cheats->list) - GBACheatListIndex(&cheats->list, cheats->currentBlock);
if (cheats->currentBlock->repeat) {
cheats->currentBlock->negativeRepeat = size - cheats->currentBlock->repeat;
} else {
cheats->currentBlock->repeat = size;
}
cheats->currentBlock = 0;
}
static void _parElseBlock(struct GBACheatSet* cheats) {
size_t size = GBACheatListSize(&cheats->list) - GBACheatListIndex(&cheats->list, cheats->currentBlock);
cheats->currentBlock->repeat = size;
}
static bool _addPAR3Cond(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
enum GBAActionReplay3Condition condition = op1 & PAR3_COND;
int width = 1 << ((op1 & PAR3_WIDTH) >> PAR3_WIDTH_BASE);
if (width > 4) {
// TODO: Always false conditions
return false;
}
if ((op1 & PAR3_ACTION) == PAR3_ACTION_DISABLE) {
// TODO: Codes that disable
return false;
}
struct GBACheat* cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op1);
cheat->width = width;
cheat->operand = op2 & (0xFFFFFFFFU >> ((4 - width) * 8));
cheat->addressOffset = 0;
cheat->operandOffset = 0;
switch (op1 & PAR3_ACTION) {
case PAR3_ACTION_NEXT:
cheat->repeat = 1;
cheat->negativeRepeat = 0;
break;
case PAR3_ACTION_NEXT_TWO:
cheat->repeat = 2;
cheat->negativeRepeat = 0;
break;
case PAR3_ACTION_BLOCK:
cheat->repeat = 0;
cheat->negativeRepeat = 0;
if (cheats->currentBlock) {
_parEndBlock(cheats);
}
cheats->currentBlock = cheat;
break;
}
switch (condition) {
case PAR3_COND_OTHER:
// We shouldn't be able to get here
GBALog(0, GBA_LOG_ERROR, "Unexpectedly created 'other' PARv3 code");
cheat->type = CHEAT_IF_LAND;
cheat->operand = 0;
break;
case PAR3_COND_EQ:
cheat->type = CHEAT_IF_EQ;
break;
case PAR3_COND_NE:
cheat->type = CHEAT_IF_NE;
break;
case PAR3_COND_LT:
cheat->type = CHEAT_IF_LT;
break;
case PAR3_COND_GT:
cheat->type = CHEAT_IF_GT;
break;
case PAR3_COND_ULT:
cheat->type = CHEAT_IF_ULT;
break;
case PAR3_COND_UGT:
cheat->type = CHEAT_IF_UGT;
break;
case PAR3_COND_LAND:
cheat->type = CHEAT_IF_LAND;
break;
}
return true;
}
static bool _addPAR3Special(struct GBACheatSet* cheats, uint32_t op2) {
struct GBACheat* cheat;
switch (op2 & 0xFF000000) {
case PAR3_OTHER_SLOWDOWN:
// TODO: Slowdown
return false;
case PAR3_OTHER_BUTTON_1:
case PAR3_OTHER_BUTTON_2:
case PAR3_OTHER_BUTTON_4:
// TODO: Button
GBALog(0, GBA_LOG_STUB, "GameShark button unimplemented");
return false;
// TODO: Fix overriding existing patches
case PAR3_OTHER_PATCH_1:
cheats->romPatches[0].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[0].applied = false;
cheats->romPatches[0].exists = true;
cheats->incompletePatch = &cheats->romPatches[0];
break;
case PAR3_OTHER_PATCH_2:
cheats->romPatches[1].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[1].applied = false;
cheats->romPatches[1].exists = true;
cheats->incompletePatch = &cheats->romPatches[1];
break;
case PAR3_OTHER_PATCH_3:
cheats->romPatches[2].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[2].applied = false;
cheats->romPatches[2].exists = true;
cheats->incompletePatch = &cheats->romPatches[2];
break;
case PAR3_OTHER_PATCH_4:
cheats->romPatches[3].address = BASE_CART0 | ((op2 & 0xFFFFFF) << 1);
cheats->romPatches[3].applied = false;
cheats->romPatches[3].exists = true;
cheats->incompletePatch = &cheats->romPatches[3];
break;
case PAR3_OTHER_ENDIF:
if (cheats->currentBlock) {
_parEndBlock(cheats);
return true;
}
return false;
case PAR3_OTHER_ELSE:
if (cheats->currentBlock) {
_parElseBlock(cheats);
return true;
}
return false;
case PAR3_OTHER_FILL_1:
cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op2);
cheat->width = 1;
cheats->incompleteCheat = cheat;
break;
case PAR3_OTHER_FILL_2:
cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op2);
cheat->width = 2;
cheats->incompleteCheat = cheat;
break;
case PAR3_OTHER_FILL_4:
cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op2);
cheat->width = 3;
cheats->incompleteCheat = cheat;
break;
}
return true;
}
bool GBACheatAddProActionReplayRaw(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2) {
if (cheats->incompletePatch) {
cheats->incompletePatch->newValue = op1;
cheats->incompletePatch = 0;
return true;
}
if (cheats->incompleteCheat) {
cheats->incompleteCheat->operand = op1 & (0xFFFFFFFFU >> ((4 - cheats->incompleteCheat->width) * 8));
cheats->incompleteCheat->addressOffset = op2 >> 24;
cheats->incompleteCheat->repeat = (op2 >> 16) & 0xFF;
cheats->incompleteCheat->addressOffset = (op2 & 0xFFFF) * cheats->incompleteCheat->width;
cheats->incompleteCheat = 0;
return true;
}
if (op2 == 0x001DC0DE) {
return true;
}
switch (op1) {
case 0x00000000:
return _addPAR3Special(cheats, op2);
case 0xDEADFACE:
GBACheatReseedGameShark(cheats->gsaSeeds, op2, _par3T1, _par3T2);
return true;
}
if (op1 >> 24 == 0xC4) {
if (cheats->hook) {
return false;
}
cheats->hook = malloc(sizeof(*cheats->hook));
cheats->hook->address = BASE_CART0 | (op1 & (SIZE_CART0 - 1));
cheats->hook->mode = MODE_THUMB;
cheats->hook->refs = 1;
cheats->hook->reentries = 0;
return true;
}
if (op1 & PAR3_COND) {
return _addPAR3Cond(cheats, op1, op2);
}
int width = 1 << ((op1 & PAR3_WIDTH) >> PAR3_WIDTH_BASE);
struct GBACheat* cheat = GBACheatListAppend(&cheats->list);
cheat->address = _parAddr(op1);
cheat->operandOffset = 0;
cheat->addressOffset = 0;
cheat->repeat = 1;
switch (op1 & PAR3_BASE) {
case PAR3_BASE_ASSIGN:
cheat->type = CHEAT_ASSIGN;
cheat->addressOffset = width;
if (width < 4) {
cheat->repeat = (op2 >> (width * 8)) + 1;
}
break;
case PAR3_BASE_INDIRECT:
cheat->type = CHEAT_ASSIGN_INDIRECT;
if (width < 4) {
cheat->addressOffset = (op2 >> (width * 8)) * width;
}
break;
case PAR3_BASE_ADD:
cheat->type = CHEAT_ADD;
break;
case PAR3_BASE_OTHER:
width = ((op1 >> 24) & 1) + 1;
cheat->type = CHEAT_ASSIGN;
cheat->address = BASE_IO | (op1 & OFFSET_MASK);
break;
}
cheat->width = width;
cheat->operand = op2 & (0xFFFFFFFFU >> ((4 - width) * 8));
return true;
}
bool GBACheatAddProActionReplay(struct GBACheatSet* set, uint32_t op1, uint32_t op2) {
uint32_t o1 = op1;
uint32_t o2 = op2;
char line[18] = "XXXXXXXX XXXXXXXX";
snprintf(line, sizeof(line), "%08X %08X", op1, op2);
GBACheatRegisterLine(set, line);
switch (set->gsaVersion) {
case 0:
GBACheatSetGameSharkVersion(set, 3);
// Fall through
case 1:
GBACheatDecryptGameShark(&o1, &o2, set->gsaSeeds);
return GBACheatAddProActionReplayRaw(set, o1, o2);
}
return false;
}
bool GBACheatAddProActionReplayLine(struct GBACheatSet* cheats, const char* line) {
uint32_t op1;
uint32_t op2;
line = hex32(line, &op1);
if (!line) {
return false;
}
while (*line == ' ') {
++line;
}
line = hex32(line, &op2);
if (!line) {
return false;
}
return GBACheatAddProActionReplay(cheats, op1, op2);
}

15
src/gba/cheats/parv3.h Normal file
View File

@ -0,0 +1,15 @@
/* Copyright (c) 2013-2015 Jeffrey Pfau
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GBA_CHEATS_PARV3_H
#define GBA_CHEATS_PARV3_H
#include "gba/cheats.h"
extern const uint32_t GBACheatProActionReplaySeeds[4];
bool GBACheatAddProActionReplayRaw(struct GBACheatSet* cheats, uint32_t op1, uint32_t op2);
#endif

68
src/util/string.c
View File

@ -197,3 +197,71 @@ char* utf16to8(const uint16_t* utf16, size_t length) {
newUTF8[utf8Length] = '\0'; newUTF8[utf8Length] = '\0';
return newUTF8; return newUTF8;
} }
int hexDigit(char digit) {
switch (digit) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return digit - '0';
case 'a':
case 'b':
case 'c':
case 'd':
case 'e':
case 'f':
return digit - 'a' + 10;
case 'A':
case 'B':
case 'C':
case 'D':
case 'E':
case 'F':
return digit - 'A' + 10;
default:
return -1;
}
}
const char* hex32(const char* line, uint32_t* out) {
uint32_t value = 0;
int i;
for (i = 0; i < 8; ++i, ++line) {
char digit = *line;
value <<= 4;
int nybble = hexDigit(digit);
if (nybble < 0) {
return 0;
}
value |= nybble;
}
*out = value;
return line;
}
const char* hex16(const char* line, uint16_t* out) {
uint16_t value = 0;
*out = 0;
int i;
for (i = 0; i < 4; ++i, ++line) {
char digit = *line;
value <<= 4;
int nybble = hexDigit(digit);
if (nybble < 0) {
return 0;
}
value |= nybble;
}
*out = value;
return line;
}

4
src/util/string.h
View File

@ -18,4 +18,8 @@ char* strnrstr(const char* restrict s1, const char* restrict s2, size_t len);
int utfcmp(const uint16_t* utf16, const char* utf8, size_t utf16Length, size_t utf8Length); int utfcmp(const uint16_t* utf16, const char* utf8, size_t utf16Length, size_t utf8Length);
char* utf16to8(const uint16_t* utf16, size_t length); char* utf16to8(const uint16_t* utf16, size_t length);
int hexDigit(char digit);
const char* hex32(const char* line, uint32_t* out);
const char* hex16(const char* line, uint16_t* out);
#endif #endif