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prime/src/Dolphin/GBA/GBAJoyBoot.c

367 lines
10 KiB
C
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#include "dolphin/GBAPriv.h"
static volatile u8 D54[] = {
0x18, 0xFC, 0xC0, 0x80, 0x7f, 0x40, 0x3f, 0x01, 0x00, 0x2f, 0x2f, 0x20, 0x43, 0x6f, 0x64,
0x65, 0x64, 0x20, 0x62, 0x79, 0x20, 0x4b, 0x61, 0x77, 0x61, 0x73, 0x65, 0x64, 0x6f, 0x00,
0x00, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0xAC, 0xC4, 0xF8, 0x08, 0x10, 0xBF, 0x18,
};
static void F23(s32 chan, s32 ret);
static void F25(s32 chan, s32 ret);
static void F27(s32 chan, s32 ret);
static void F29(s32 chan, s32 ret);
static void F31(s32 chan, s32 ret);
static void F33(s32 chan, s32 ret);
static void F35(s32 chan, s32 ret);
static void F37(s32 chan, s32 ret);
static void F39(s32 chan, s32 ret);
static u32 F72(u32 crc, u32 src, vu8* keyp) {
int i;
int poly;
for (i = keyp[1]; i > keyp[11]; --i) {
if ((src ^ crc) & 1 != 0) {
crc = (crc >> 1) ^ ((keyp[19] * 256 + keyp[21] + keyp[24] + keyp[24] * -16) - keyp[16]);
} else {
crc >>= 1;
}
src >>= 1;
}
}
u32 F95(u32 src, vu8* keyp) {
return src * ((keyp[3] << keyp[0x16]) | keyp[1] | (keyp[4] << keyp[0x11]) |
(keyp[4] << keyp[0x18])) -
(keyp[7] - keyp[6]);
}
static void F104(s32 chan, s32 ret) {
GBABootInfo* bootInfo;
GBACallback callback;
bootInfo = &__GBA[chan].bootInfo;
bootInfo->begin = 0;
if (bootInfo->callback != NULL) {
callback = bootInfo->callback;
bootInfo->callback = NULL;
callback(chan, ret);
}
}
s32 GBAJoyBootAsync(s32 chan, s32 paletteColor, s32 paletteSpeed, u8* programp, s32 length,
u8* status, GBACallback callback) {
int ret;
GBABootInfo* bootInfo;
u8 percent;
bootInfo = &__GBA[chan].bootInfo;
if (chan & ~3) {
ret = GBA_JOYBOOT_ERR_INVALID;
} else if (length == 0 || GBA_JOYBOOT_PROGRAM_SIZE_MAX < length) {
ret = GBA_JOYBOOT_ERR_INVALID;
} else if (paletteSpeed < -4 || paletteSpeed > 4) {
ret = GBA_JOYBOOT_ERR_INVALID;
} else if (paletteColor < 0 || paletteColor > 6) {
ret = GBA_JOYBOOT_ERR_INVALID;
} else if (programp[0xac] * programp[0xad] * programp[0xae] * programp[0xaf] == 0) {
ret = GBA_JOYBOOT_ERR_INVALID;
} else {
ret = GBAGetProcessStatus(chan, &percent);
if (ret != 0) {
return ret;
}
bootInfo->paletteColor = paletteColor;
bootInfo->paletteSpeed = paletteSpeed;
bootInfo->programp = programp;
bootInfo->length = length;
bootInfo->status = status;
bootInfo->callback = callback;
bootInfo->curOffset = D54[8];
ret = GBAGetStatusAsync(chan, bootInfo->status, F23);
if (ret != GBA_READY) {
bootInfo->callback = NULL;
}
}
return ret;
}
static void F23(s32 chan, s32 ret) {
GBAControl* gba;
GBABootInfo* bootInfo;
gba = &__GBA[chan];
bootInfo = &gba->bootInfo;
if (ret != GBA_READY || (ret = GBAResetAsync(chan, bootInfo->status, F25)) != GBA_READY) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F25(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == GBA_READY && *bootInfo->status != D54[37]) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
}
if (ret != GBA_READY || (ret = GBAGetStatusAsync(chan, bootInfo->status, F27))) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F27(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == GBA_READY && *bootInfo->status != D54[0]) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
}
if (ret != GBA_READY || (ret = GBAReadAsync(chan, bootInfo->readbuf, bootInfo->status, F29))) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F29(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == GBA_READY) {
__GBAX02(chan, bootInfo->readbuf);
} else {
F104(chan, ret);
}
gba->ret = ret;
}
void __GBAX01(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
int val200;
if (ret == GBA_READY) {
bootInfo->keyA = gba->param->keyA;
bootInfo->keyB = gba->param->keyB;
if (bootInfo->readbuf[3] == 0 || bootInfo->readbuf[2] == 0 ||
(bootInfo->keyA & (D54[5] << 9)) == 0 || bootInfo->readbuf[1] == 0 ||
(bootInfo->keyA >> 15) == 0 || bootInfo->readbuf[0] == 0) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
} else {
bootInfo->i = ~D54[36] & bootInfo->length + D54[36];
val200 = D54[20] << D54[33];
if (bootInfo->i < val200) {
bootInfo->i = val200;
}
bootInfo->realLength = bootInfo->i;
bootInfo->i -= val200;
bootInfo->i >>= D54[32];
bootInfo->writebuf[0] = (u8)(bootInfo->keyB >> 0);
bootInfo->writebuf[1] = (u8)(bootInfo->keyB >> 8);
bootInfo->writebuf[3] = (u8)(bootInfo->keyB >> 24);
bootInfo->writebuf[2] = (u8)(bootInfo->keyB >> 16);
bootInfo->crc = (D54[38] + 1) << D54[34];
bootInfo->curOffset = D54[8];
bootInfo->begin = OSGetTime();
bootInfo->firstXfer = TRUE;
ret = GBAWriteAsync(chan, bootInfo->writebuf, bootInfo->status, F31);
}
}
if (ret != GBA_READY) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F31(s32 chan, s32 ret) {
GBAControl* gba;
GBABootInfo* bootInfo;
u32 writeWord;
gba = &__GBA[chan];
bootInfo = &gba->bootInfo;
if (ret == GBA_READY) {
if (bootInfo->firstXfer != FALSE) {
bootInfo->firstXfer = FALSE;
} else if ((*bootInfo->status & D54[20]) == 0 ||
(*bootInfo->status & D54[42]) >> D54[33] !=
(bootInfo->curOffset & D54[33]) >> D54[31]) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
goto exit;
} else {
bootInfo->curOffset -= D54[25] - D54[23];
}
if (bootInfo->curOffset <= bootInfo->realLength) {
if (bootInfo->curOffset < bootInfo->realLength) {
writeWord = D54[29];
for (bootInfo->i = D54[29]; bootInfo->i < D54[33]; ++bootInfo->i) {
if (bootInfo->length != 0) {
writeWord |= *(bootInfo->programp++) << (bootInfo->i * D54[37]);
--bootInfo->length;
}
}
if (bootInfo->curOffset == D54[38]) {
bootInfo->initialCode = writeWord;
} else if (bootInfo->curOffset == D54[39]) {
writeWord = chan << D54[37];
}
if (bootInfo->curOffset >= D54[2]) {
bootInfo->crc = F72(bootInfo->crc, writeWord, &D54[19]);
}
if (bootInfo->curOffset == D54[40] + 0x100) {
bootInfo->dummyWord[0] = writeWord;
} else if (bootInfo->curOffset == D54[1] + 0x100) {
bootInfo->i = D54[7];
bootInfo->dummyWord[bootInfo->i] = writeWord;
}
} else {
writeWord = bootInfo->crc | (bootInfo->curOffset << 16);
}
if (D54[43] < bootInfo->curOffset) {
bootInfo->keyA = F95(bootInfo->keyA, &D54[20]);
writeWord ^= bootInfo->keyA ^ -(bootInfo->curOffset + D54[11] * 0x100000) ^
((D54[18] << 8) | (D54[19] << 16) | (D54[11] << 24) | D54[11]);
}
bootInfo->writebuf[3] = (writeWord >> D54[0]);
bootInfo->writebuf[0] = (writeWord >> D54[30]);
bootInfo->writebuf[1] = (writeWord >> D54[41]);
bootInfo->writebuf[2] = (writeWord >> D54[42]);
if (bootInfo->curOffset == D54[1] + D54[1]) {
bootInfo->dummyWord[2] = writeWord;
}
if (bootInfo->i < D54[33]) {
bootInfo->dummyWord[bootInfo->i] = writeWord;
}
ret = GBAWriteAsync(chan, bootInfo->writebuf, bootInfo->status, F31);
} else {
bootInfo->start = OSGetTick();
ret = GBAReadAsync(chan, bootInfo->readbuf, bootInfo->status, F33);
}
}
exit:
if (ret != GBA_READY) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F33(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == GBA_READY) {
for (bootInfo->i = 33; bootInfo->i < 36; ++bootInfo->i) {
ret = (((bootInfo->readbuf[3] ^ (bootInfo->dummyWord[D54[bootInfo->i]] >> 24)) |
(bootInfo->readbuf[2] ^ (bootInfo->dummyWord[D54[bootInfo->i]] >> 16)) |
(bootInfo->readbuf[1] ^ (bootInfo->dummyWord[D54[bootInfo->i]] >> 8)) |
(bootInfo->readbuf[0] ^ (bootInfo->dummyWord[D54[bootInfo->i]] >> 0)))
<< 24);
if (ret == GBA_READY) {
break;
}
}
if (ret != GBA_READY) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
} else {
bootInfo->start = OSGetTick();
ret = GBAGetStatusAsync(chan, bootInfo->status, F35);
}
}
if (ret != GBA_READY) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F35(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == 0) {
if (OSSecondsToTicks(10) <= OSGetTick() - bootInfo->start) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
} else if ((*bootInfo->status & 0x32) != 0) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
} else if (*bootInfo->status != 8) {
ret = GBAGetStatusAsync(chan, bootInfo->status, F35);
} else {
__GBASetDelay(chan, OSMillisecondsToTicks(8));
ret = GBAReadAsync(chan, bootInfo->readbuf, bootInfo->status, F37);
__GBASetDelay(chan, OSMicrosecondsToTicks(60));
}
}
if (ret != GBA_READY) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F37(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == GBA_READY) {
if ((((bootInfo->readbuf[3] ^ (bootInfo->initialCode >> 24)) |
(bootInfo->readbuf[2] ^ (bootInfo->initialCode >> 16)) |
(bootInfo->readbuf[1] ^ (bootInfo->initialCode >> 8)) |
(bootInfo->readbuf[0] ^ (bootInfo->initialCode >> 0)))
<< 24) != 0) {
ret = GBA_JOYBOOT_UNKNOWN_STATE;
} else {
ret = GBAWriteAsync(chan, bootInfo->readbuf, bootInfo->status, F39);
}
}
if (ret != GBA_READY) {
F104(chan, ret);
}
gba->ret = ret;
}
static void F39(s32 chan, s32 ret) {
GBAControl* gba = &__GBA[chan];
GBABootInfo* bootInfo = &gba->bootInfo;
if (ret == GBA_READY) {
*bootInfo->status = 0;
}
F104(chan, ret);
gba->ret = ret;
}
s32 GBAJoyBoot(s32 chan, s32 paletteColor, s32 paletteSpeed, unsigned char* programp, s32 length,
unsigned char* status) {
s32 ret = GBAJoyBootAsync(chan, paletteColor, paletteSpeed, programp, length, status,
__GBASyncCallback);
if (ret == GBA_READY) {
ret = __GBASync(chan);
}
return ret;
}
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