// todo: FileDesc layout is wrong
// todo: get rid of these globals
static FileDesc FDesc[32];
-static char ffile[64], *pfile;
+static char ffile[64];
static int nfile;
// fixed RAM offsets, SCPH1001 compatible
#define A_HEAP_SIZE 0x9004
#define A_HEAP_END 0x9008
#define A_HEAP_FLAG 0x900c
+#define A_RND_SEED 0x9010
#define A_CD_EVENTS 0xb9b8
#define A_EXC_GP 0xf450
pc0 = ra;
}
+static void mips_return_void(void)
+{
+ pc0 = ra;
+}
+
static void use_cycles(u32 cycle)
{
psxRegs.cycle += cycle * 2;
u32 sra = ra;
u32 lim = 0;
pc0 = pc;
+
+ assert(ra != 0x80001000);
+ if (ra == 0x80001000)
+ return;
ra = 0x80001000;
while (!returned_from_exception() && pc0 != 0x80001000 && ++lim < 1000000)
PSXBIOS_LOG("read %d: %x,%x (%s)\n", FDesc[1 + mcd].mcfile, FDesc[1 + mcd].offset, a2, Mcd##mcd##Data + 128 * FDesc[1 + mcd].mcfile + 0xa); \
ptr = Mcd##mcd##Data + 8192 * FDesc[1 + mcd].mcfile + FDesc[1 + mcd].offset; \
memcpy(Ra1, ptr, length); \
+ psxCpu->Clear(a1, (length + 3) / 4); \
if (FDesc[1 + mcd].mode & 0x8000) { \
DeliverEvent(0xf0000011, 0x0004); \
DeliverEvent(0xf4000001, 0x0004); \
pc0 = ra;
}
-void psxBios_bcopy() { // 0x27
- char *p1 = (char *)Ra1, *p2 = (char *)Ra0;
- v0 = a0;
- if (a0 == 0 || a2 > 0x7FFFFFFF)
+static void do_memset(u32 dst, u32 v, s32 len)
+{
+ u32 d = dst;
+ s32 l = len;
+ while (l-- > 0) {
+ u8 *db = PSXM(d);
+ if (db != INVALID_PTR)
+ *db = v;
+ d++;
+ }
+ psxCpu->Clear(dst, (len + 3) / 4);
+}
+
+static void do_memcpy(u32 dst, u32 src, s32 len)
+{
+ u32 d = dst, s = src;
+ s32 l = len;
+ while (l-- > 0) {
+ const u8 *sb = PSXM(s);
+ u8 *db = PSXM(d);
+ if (db != INVALID_PTR && sb != INVALID_PTR)
+ *db = *sb;
+ d++;
+ s++;
+ }
+ psxCpu->Clear(dst, (len + 3) / 4);
+}
+
+static void psxBios_memcpy();
+
+static void psxBios_bcopy() { // 0x27 - memcpy with args swapped
+ //PSXBIOS_LOG("psxBios_%s %x %x %x\n", biosA0n[0x27], a0, a1, a2);
+ u32 ret = a0, cycles = 0;
+ if (a0 == 0) // ...but it checks src this time
{
- pc0 = ra;
+ mips_return_c(0, 4);
return;
}
- while ((s32)a2-- > 0) *p1++ = *p2++;
- a2 = 0;
- pc0 = ra;
+ v1 = a0;
+ if ((s32)a2 > 0) {
+ do_memcpy(a1, a0, a2);
+ cycles = a2 * 6;
+ a0 += a2;
+ a1 += a2;
+ a2 = 0;
+ }
+ mips_return_c(ret, cycles + 5);
}
static void psxBios_bzero() { // 0x28
/* Same as memset here (See memset below) */
- u32 ret = a0;
+ u32 ret = a0, cycles;
if (a0 == 0 || (s32)a1 <= 0)
{
mips_return_c(0, 6);
return;
}
- while ((s32)a1-- > 0) {
- storeRam8(a0++, 0);
- use_cycles(4);
- }
+ do_memset(a0, 0, a1);
+ cycles = a1 * 4;
+ a0 += a1;
+ a1 = 0;
// todo: many more cycles due to uncached bios mem
- mips_return_c(ret, 5);
+ mips_return_c(ret, cycles + 5);
}
void psxBios_bcmp() { // 0x29
v0 = 0; pc0 = ra;
}
-void psxBios_memcpy() { // 0x2a
- char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
- v0 = a0;
- if (a0 == 0 || a2 > 0x7FFFFFFF)
+static void psxBios_memcpy() { // 0x2a
+ u32 ret = a0, cycles = 0;
+ if (a0 == 0)
{
- pc0 = ra;
+ mips_return_c(0, 4);
return;
}
- while ((s32)a2-- > 0) {
- *p1++ = *p2++;
+ v1 = a0;
+ if ((s32)a2 > 0) {
+ do_memcpy(a0, a1, a2);
+ cycles = a2 * 6;
+ a0 += a2;
+ a1 += a2;
+ a2 = 0;
}
- a2 = 0;
- pc0 = ra;
+ mips_return_c(ret, cycles + 5);
}
static void psxBios_memset() { // 0x2b
- u32 ret = a0;
+ u32 ret = a0, cycles;
if (a0 == 0 || (s32)a2 <= 0)
{
mips_return_c(0, 6);
return;
}
- while ((s32)a2-- > 0) {
- storeRam8(a0++, a1);
- use_cycles(4);
- }
+ do_memset(a0, a1, a2);
+ cycles = a2 * 4;
+ a0 += a2;
+ a2 = 0;
// todo: many more cycles due to uncached bios mem
- mips_return_c(ret, 5);
+ mips_return_c(ret, cycles + 5);
}
void psxBios_memmove() { // 0x2c
- char *p1 = (char *)Ra0, *p2 = (char *)Ra1;
- v0 = a0;
- if (a0 == 0 || a2 > 0x7FFFFFFF)
+ u32 ret = a0, cycles = 0;
+ if (a0 == 0)
{
- pc0 = ra;
+ mips_return_c(0, 4);
return;
}
- if (p2 <= p1 && p2 + a2 > p1) {
- a2++; // BUG: copy one more byte here
- p1 += a2;
- p2 += a2;
- while ((s32)a2-- > 0) *--p1 = *--p2;
- } else {
- while ((s32)a2-- > 0) *p1++ = *p2++;
+ v1 = a0;
+ if ((s32)a2 > 0 && a0 > a1 && a0 < a1 + a2) {
+ u32 dst = a0, len = a2 + 1;
+ a0 += a2;
+ a1 += a2;
+ while ((s32)a2 >= 0) { // BUG: copies one more byte here
+ const u8 *sb = PSXM(a1);
+ u8 *db = PSXM(a0);
+ if (db != INVALID_PTR && sb != INVALID_PTR)
+ *db = *sb;
+ a0--;
+ a1--;
+ a2--;
+ }
+ psxCpu->Clear(dst, (len + 3) / 4);
+ cycles = 10 + len * 8;
+ } else if ((s32)a2 > 0) {
+ do_memcpy(a0, a1, a2);
+ cycles = a2 * 6;
+ a0 += a2;
+ a1 += a2;
+ a2 = 0;
}
- pc0 = ra;
+ mips_return_c(ret, cycles + 5);
}
void psxBios_memcmp() { // 0x2d
v0 = 0; pc0 = ra;
}
-void psxBios_rand() { // 0x2f
- u32 s = psxMu32(0x9010) * 1103515245 + 12345;
- v0 = (s >> 16) & 0x7fff;
- psxMu32ref(0x9010) = SWAPu32(s);
- pc0 = ra;
+static void psxBios_rand() { // 0x2f
+ u32 s = loadRam32(A_RND_SEED) * 1103515245 + 12345;
+ storeRam32(A_RND_SEED, s);
+ v1 = s;
+ mips_return_c((s >> 16) & 0x7fff, 12+37);
}
-void psxBios_srand() { // 0x30
- psxMu32ref(0x9010) = SWAPu32(a0);
- pc0 = ra;
+static void psxBios_srand() { // 0x30
+ storeRam32(A_RND_SEED, a0);
+ mips_return_void_c(3);
}
static u32 qscmpfunc, qswidth;
mips_return_void_c(1000);
}
+static void FlushCache() {
+ psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_ISOLATED, NULL);
+ psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL);
+ k0 = 0xbfc0193c;
+ // runs from uncached mem so tons of cycles
+ use_cycles(500);
+}
+
/*
* long Load(char *name, struct EXEC *header);
*/
void *pa1;
pa1 = Ra1;
- if (pa1 && LoadCdromFile(Ra0, &eheader) == 0) {
+ if (pa1 != INVALID_PTR && LoadCdromFile(Ra0, &eheader) == 0) {
memcpy(pa1, ((char*)&eheader)+16, sizeof(EXEC));
+ psxCpu->Clear(a1, sizeof(EXEC) / 4);
+ FlushCache();
v0 = 1;
} else v0 = 0;
PSXBIOS_LOG("psxBios_%s: %s, %d -> %d\n", biosA0n[0x42], Ra0, a1, v0);
pc0 = SWAP32(header->_pc0);
}
-void psxBios_FlushCache() { // 44
-#ifdef PSXBIOS_LOG
+static void psxBios_FlushCache() { // 44
PSXBIOS_LOG("psxBios_%s\n", biosA0n[0x44]);
-#endif
- psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_ISOLATED, NULL);
- psxCpu->Notify(R3000ACPU_NOTIFY_CACHE_UNISOLATED, NULL);
- pc0 = ra;
+ FlushCache();
+ mips_return_void();
}
void psxBios_GPU_dw() { // 0x46
void psxBios_mem2vram() { // 0x47
int size;
- gpuSyncPluginSR();
+ gpuSyncPluginSR(); // flush
GPU_writeData(0xa0000000);
GPU_writeData((a1<<0x10)|(a0&0xffff));
GPU_writeData((a3<<0x10)|(a2&0xffff));
}
void psxBios_GPU_cw() { // 0x49
- gpuSyncPluginSR();
GPU_writeData(a0);
+ gpuSyncPluginSR();
v0 = HW_GPU_STATUS;
pc0 = ra;
}
u32 ret = loadRam32(A_TT_EvCB) + evcb_len;
u32 i, lim = evcb_len / 0x1c;
+ //printf("%s %08x %x\n", __func__, class, spec);
for (i = 0; i < lim; i++, ev++) {
use_cycles(8);
if (SWAP32(ev->status) != EvStACTIVE)
void psxBios_open() { // 0x32
void *pa0 = Ra0;
-#ifdef PSXBIOS_LOG
- PSXBIOS_LOG("psxBios_%s: %s,%x\n", biosB0n[0x32], Ra0, a1);
-#endif
+ PSXBIOS_LOG("psxBios_%s %s %x\n", biosB0n[0x32], Ra0, a1);
v0 = -1;
#define bufile(mcd) { \
size_t size_of_name = strlen_internal(dir->name); \
+ v0 = 0; \
while (nfile < 16) { \
+ char *pfile = ffile+5; \
int match=1; \
\
ptr = Mcd##mcd##Data + 128 * (nfile + 1); \
* struct DIRENTRY* firstfile(char *name,struct DIRENTRY *dir);
*/
-void psxBios_firstfile() { // 42
- struct DIRENTRY *dir = (struct DIRENTRY *)Ra1;
- void *pa0 = Ra0;
+static void psxBios_firstfile() { // 42
+ struct DIRENTRY *dir = (struct DIRENTRY *)castRam8ptr(a1);
+ char *pa0 = castRam8ptr(a0);
u32 _dir = a1;
char *ptr;
int i;
-#ifdef PSXBIOS_LOG
- PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x42], Ra0);
-#endif
-
v0 = 0;
- if (pa0 != INVALID_PTR) {
- strcpy(ffile, pa0);
- pfile = ffile+5;
+ {
+ snprintf(ffile, sizeof(ffile), "%s", pa0);
nfile = 0;
if (!strncmp(pa0, "bu00", 4)) {
// firstfile() calls _card_read() internally, so deliver it's event
bufile(2);
}
}
+ PSXBIOS_LOG("psxBios_%s %s %x -> %x\n", biosB0n[0x42], pa0, a1, v0);
pc0 = ra;
}
char *ptr;
int i;
-#ifdef PSXBIOS_LOG
- PSXBIOS_LOG("psxBios_%s: %s\n", biosB0n[0x43], dir->name);
-#endif
-
v0 = 0;
if (!strncmp(ffile, "bu00", 4)) {
bufile(1);
}
-
- if (!strncmp(ffile, "bu10", 4)) {
+ else if (!strncmp(ffile, "bu10", 4)) {
bufile(2);
}
+ PSXBIOS_LOG("psxBios_%s %s -> %x\n", biosB0n[0x43], dir->name, v0);
pc0 = ra;
}
u32 *ram32 = (u32 *)psxM;
PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x4a], a0);
write_chain(ram32 + A_PADCRD_CHN_E/4, 0, 0x49bc, 0x4a4c);
- // (maybe) todo: early_card_irq, FlushCache etc
+ // (maybe) todo: early_card_irq, etc
ram32[A_PAD_IRQR_ENA/4] = SWAP32(a0);
- mips_return_c(0, 300);
+ psxBios_FlushCache();
+ mips_return_c(0, 34+13+15+6);
}
void psxBios_StartCARD() { // 4b
d[2] = SWAPu32(handler2);
// install the hle traps
- PSXMu32ref(handler1) = HLEOP(chain_hle_op(handler1));
- PSXMu32ref(handler2) = HLEOP(chain_hle_op(handler2));
+ if (handler1) PSXMu32ref(handler1) = HLEOP(chain_hle_op(handler1));
+ if (handler2) PSXMu32ref(handler2) = HLEOP(chain_hle_op(handler2));
}
static void setup_tt(u32 tcb_cnt, u32 evcb_cnt)
memset(FDesc, 0, sizeof(FDesc));
- // initial RNG seed
- psxMu32ref(0x9010) = SWAPu32(0xac20cc00);
-
// somewhat pretend to be a SCPH1001 BIOS
// some games look for these and take an exception if they're missing
rom32 = (u32 *)psxR;
len = 0x80000 - 0x69d68;
uncompress((Bytef *)(psxR + 0x69d68), &len, font_889f, sizeof(font_889f));
+ // trap attempts to call bios directly
+ rom32[0x00000/4] = HLEOP(hleop_dummy);
+ rom32[0x00180/4] = HLEOP(hleop_dummy);
+ rom32[0x3fffc/4] = HLEOP(hleop_dummy);
+ rom32[0x65ffc/4] = HLEOP(hleop_dummy);
+ rom32[0x7ff2c/4] = HLEOP(hleop_dummy);
+
/* Some games like R-Types, CTR, Fade to Black read from adress 0x00000000 due to uninitialized pointers.
See Garbage Area at Address 00000000h in Nocash PSX Specfications for more information.
Here are some examples of games not working with this fix in place :
ram32[0x1000/4] = HLEOP(hleop_dummy);
ram32[0x2000/4] = HLEOP(hleop_dummy);
ram32[0x3000/4] = HLEOP(hleop_dummy);
- ram32[0x4c54/4] = HLEOP(hleop_dummy); // for B12_InitPad?
ram32[0x8000/4] = HLEOP(hleop_execret);
ram32[A_EEXIT_PTR/4] = SWAP32(A_EEXIT_DEF);
ram32[A_RCNT_VBL_ACK/4 + 1] = SWAP32(1);
ram32[A_RCNT_VBL_ACK/4 + 2] = SWAP32(1);
ram32[A_RCNT_VBL_ACK/4 + 3] = SWAP32(1);
+ ram32[A_RND_SEED/4] = SWAPu32(0x24040001); // was 0xac20cc00
}
void psxBiosShutdown() {
void hleExc0_2_2_syscall() // not in any A/B/C table
{
- u32 code = (psxRegs.CP0.n.Cause & 0x3c) >> 2;
u32 tcbPtr = loadRam32(A_TT_PCB);
TCB *tcb = loadRam32ptr(tcbPtr);
+ u32 code = (SWAP32(tcb->cause) & 0x3c) >> 2;
if (code != R3000E_Syscall) {
if (code != 0) {
return;
}
- //printf("%s c=%d a0=%d\n", __func__, code, a0);
+ //printf("%s c=%d a0=%d\n", __func__, code, SWAP32(tcb->reg[4]));
tcb->epc += SWAP32(4);
- switch (a0) {
+ switch (SWAP32(tcb->reg[4])) { // a0
case 0: // noop
break;
case 3: { // ChangeThreadSubFunction
u32 tcbPtr = loadRam32(A_TT_PCB);
- storeRam32(tcbPtr, a1);
+ storeRam32(tcbPtr, SWAP32(tcb->reg[5])); // a1
break;
}
default:
}
#define bfreezes(ptr) bfreeze(ptr, sizeof(ptr))
-#define bfreezel(ptr) bfreeze(ptr, sizeof(*ptr))
-
-#define bfreezepsxMptr(ptr, type) { \
- if (Mode == 1) { \
- if (ptr) psxRu32ref(base) = SWAPu32((s8 *)(ptr) - psxM); \
- else psxRu32ref(base) = 0; \
- } else { \
- if (psxRu32(base) != 0) ptr = (type *)(psxM + psxRu32(base)); \
- else (ptr) = NULL; \
- } \
- base += sizeof(u32); \
-}
+#define bfreezel(ptr) bfreeze(ptr, sizeof(*(ptr)))
void psxBiosFreeze(int Mode) {
u32 base = 0x40000;
bfreezes(FDesc);
+ bfreezes(ffile);
+ bfreezel(&nfile);
}
notaz.gp2x.de / pcsx_rearmed.git / blobdiff