#include "psxinterpreter.h"
#include <zlib.h>
-#if (defined(__GNUC__) && __GNUC__ >= 5) || defined(__clang__)
-#pragma GCC diagnostic ignored "-Wpointer-sign"
-#endif
-
#ifndef PSXBIOS_LOG
//#define PSXBIOS_LOG printf
#define PSXBIOS_LOG(...)
#define A_HEAP_BASE 0x9000
#define A_HEAP_SIZE 0x9004
#define A_HEAP_END 0x9008
-#define A_HEAP_FLAG 0x900c
+#define A_HEAP_INIT_FLG 0x900c
#define A_RND_SEED 0x9010
+#define A_HEAP_FRSTCHNK 0xb060
+#define A_HEAP_CURCHNK 0xb064
#define A_CONF_TCB 0xb940
#define A_CONF_EvCB 0xb944
#define A_CONF_SP 0xb948
#define A_CD_EVENTS 0xb9b8
#define A_EXC_GP 0xf450
+#define A_A0_DUMMY 0x1010
+#define A_B0_DUMMY 0x2010
+#define A_C0_DUMMY 0x3010
+#define A_B0_5B_DUMMY 0x43d0
+
#define HLEOP(n) SWAPu32((0x3b << 26) | (n));
static u32 loadRam32(u32 addr)
pc0 = ra;
}
-// this isn't how the real bios works, but maybe good enough
+static int malloc_heap_grow(u32 size) {
+ u32 heap_addr, heap_end, heap_addr_new;
+
+ heap_addr = loadRam32(A_HEAP_BASE);
+ heap_end = loadRam32(A_HEAP_END);
+ heap_addr_new = heap_addr + 4 + size;
+ if (heap_addr_new >= heap_end)
+ return -1;
+ storeRam32(A_HEAP_BASE, heap_addr_new);
+ storeRam32(heap_addr - 4, size | 1);
+ storeRam32(heap_addr + size, ~1); // terminator
+ return 0;
+}
+
static void psxBios_malloc() { // 0x33
- u32 *heap_addr, *heap_end;
- u32 *chunk, *newchunk = NULL;
- unsigned int dsize = 0, csize, cstat;
- int colflag;
- PSXBIOS_LOG("psxBios_%s %x\n", biosA0n[0x33], a0);
- heap_addr = loadRam32ptr(A_HEAP_BASE);
- heap_end = loadRam32ptr(A_HEAP_END);
- if (heap_addr >= heap_end) {
- v0 = 0;
- pc0 = ra;
- return;
- }
+ u32 size = (a0 + 3) & ~3;
+ u32 limit = 32*1024;
+ u32 tries = 2, i;
+ u32 ret;
- // scan through heap and combine free chunks of space
- chunk = heap_addr;
- colflag = 0;
- while(chunk < heap_end) {
- // get size and status of actual chunk
- csize = ((u32)*chunk) & 0xfffffffc;
- cstat = ((u32)*chunk) & 1;
-
- // most probably broken heap descriptor
- // this fixes Burning Road
- if (*chunk == 0) {
- newchunk = chunk;
- dsize = ((uptr)heap_end - (uptr)chunk) - 4;
- colflag = 1;
- break;
+ PSXBIOS_LOG("psxBios_%s %d\n", biosA0n[0x33], a0);
+
+ if (!loadRam32(A_HEAP_INIT_FLG)) {
+ u32 heap_addr = loadRam32(A_HEAP_BASE);
+ storeRam32(heap_addr, ~1);
+ storeRam32(A_HEAP_FRSTCHNK, heap_addr);
+ storeRam32(A_HEAP_CURCHNK, heap_addr);
+ storeRam32(A_HEAP_BASE, heap_addr + 4);
+ if (malloc_heap_grow(size)) {
+ PSXBIOS_LOG("malloc: init OOM\n");
+ mips_return_c(0, 20);
+ return;
}
+ storeRam32(A_HEAP_INIT_FLG, 1);
+ }
- // it's a free chunk
- if(cstat == 1) {
- if(colflag == 0) {
- newchunk = chunk;
- dsize = csize;
- colflag = 1; // let's begin a new collection of free memory
+ for (i = 0; tries > 0 && i < limit; i++)
+ {
+ u32 chunk = loadRam32(A_HEAP_CURCHNK);
+ u32 chunk_hdr = loadRam32(chunk);
+ u32 next_chunk = chunk + 4 + (chunk_hdr & ~3);
+ u32 next_chunk_hdr = loadRam32(next_chunk);
+ use_cycles(20);
+ //printf(" c %08x %08x\n", chunk, chunk_hdr);
+ if (chunk_hdr & 1) {
+ // free chunk
+ if (chunk_hdr > (size | 1)) {
+ // split
+ u32 p2size = (chunk_hdr & ~3) - size - 4;
+ storeRam32(chunk + 4 + size, p2size | 1);
+ chunk_hdr = size | 1;
+ }
+ if (chunk_hdr == (size | 1)) {
+ storeRam32(chunk, size);
+ break;
+ }
+ // chunk too small
+ if (next_chunk_hdr & 1) {
+ // merge
+ u32 msize = (chunk_hdr & ~3) + 4 + (next_chunk_hdr & ~3);
+ storeRam32(chunk, msize | 1);
+ continue;
}
- else dsize += (csize+4); // add the new size including header
}
- // not a free chunk: did we start a collection ?
+ if (chunk_hdr == ~1) {
+ // last chunk
+ if (tries == 2)
+ storeRam32(A_HEAP_CURCHNK, loadRam32(A_HEAP_FRSTCHNK));
+ tries--;
+ }
else {
- if(colflag == 1) { // collection is over
- colflag = 0;
- *newchunk = SWAP32(dsize | 1);
- }
+ // go to the next chunk
+ storeRam32(A_HEAP_CURCHNK, next_chunk);
}
-
- // next chunk
- chunk = (u32*)((uptr)chunk + csize + 4);
- }
- // if neccessary free memory on end of heap
- if (colflag == 1)
- *newchunk = SWAP32(dsize | 1);
-
- chunk = heap_addr;
- csize = ((u32)*chunk) & 0xfffffffc;
- cstat = ((u32)*chunk) & 1;
- dsize = (a0 + 3) & 0xfffffffc;
-
- // exit on uninitialized heap
- if (chunk == NULL) {
- printf("malloc %x,%x: Uninitialized Heap!\n", v0, a0);
- v0 = 0;
- pc0 = ra;
- return;
}
- // search an unused chunk that is big enough until the end of the heap
- while ((dsize > csize || cstat==0) && chunk < heap_end ) {
- chunk = (u32*)((uptr)chunk + csize + 4);
-
- // catch out of memory
- if(chunk >= heap_end) {
- printf("malloc %x,%x: Out of memory error!\n",
- v0, a0);
- v0 = 0; pc0 = ra;
- return;
- }
-
- csize = ((u32)*chunk) & 0xfffffffc;
- cstat = ((u32)*chunk) & 1;
- }
-
- // allocate memory
- if(dsize == csize) {
- // chunk has same size
- *chunk &= 0xfffffffc;
- } else if (dsize > csize) {
- v0 = 0; pc0 = ra;
- return;
- } else {
- // split free chunk
- *chunk = SWAP32(dsize);
- newchunk = (u32*)((uptr)chunk + dsize + 4);
- *newchunk = SWAP32(((csize - dsize - 4) & 0xfffffffc) | 1);
+ if (i == limit)
+ ret = 0;
+ else if (tries == 0 && malloc_heap_grow(size))
+ ret = 0;
+ else {
+ u32 chunk = loadRam32(A_HEAP_CURCHNK);
+ storeRam32(chunk, loadRam32(chunk) & ~3);
+ ret = chunk + 4;
}
- // return pointer to allocated memory
- v0 = ((uptr)chunk - (uptr)psxM) + 4;
- v0|= 0x80000000;
- //printf ("malloc %x,%x\n", v0, a0);
- pc0 = ra;
+ PSXBIOS_LOG(" -> %08x\n", ret);
+ mips_return_c(ret, 40);
}
static void psxBios_free() { // 0x34
- PSXBIOS_LOG("psxBios_%s %x (%x bytes)\n", biosA0n[0x34], a0, loadRam32(a0 - 4));
+ PSXBIOS_LOG("psxBios_%s %x (%d bytes)\n", biosA0n[0x34], a0, loadRam32(a0 - 4));
storeRam32(a0 - 4, loadRam32(a0 - 4) | 1); // set chunk to free
mips_return_void_c(5);
}
storeRam32(A_HEAP_BASE, a0);
storeRam32(A_HEAP_SIZE, a1);
storeRam32(A_HEAP_END, a0 + (a1 & ~3) + 4);
- storeRam32(A_HEAP_FLAG, 0);
+ storeRam32(A_HEAP_INIT_FLG, 0);
storeRam32(a0, 0);
mips_return_void_c(14);
static void psxBios_printf_psxout() { // 0x3f
char tmp[1024];
char tmp2[1024];
- u32 save[4];
+ u32 save[4] = { 0, };
char *ptmp = tmp;
int n=1, i=0, j;
void *psp;
}
for (; nfile <= 15; nfile++, blocks++) {
const u8 *data2 = mcd_data + 128 * nfile;
- const char *name = data2 + 0x0a;
+ const char *name = (const char *)data2 + 0x0a;
if ((data2[0] & 0xF0) != 0x50 || name[0])
break;
}
if (!strncmp(pa0, "bu00", 4)) {
// firstfile() calls _card_read() internally, so deliver it's event
DeliverEvent(0xf0000011, 0x0004);
- bufile(Mcd1Data, a1);
+ bufile((u8 *)Mcd1Data, a1);
} else if (!strncmp(pa0, "bu10", 4)) {
// firstfile() calls _card_read() internally, so deliver it's event
DeliverEvent(0xf0000011, 0x0004);
- bufile(Mcd2Data, a1);
+ bufile((u8 *)Mcd2Data, a1);
}
}
v0 = 0;
if (!strncmp(ffile, "bu00", 4))
- bufile(Mcd1Data, a0);
+ bufile((u8 *)Mcd1Data, a0);
else if (!strncmp(ffile, "bu10", 4))
- bufile(Mcd2Data, a0);
+ bufile((u8 *)Mcd2Data, a0);
pc0 = ra;
}
SPU_writeRegister(0x1f801d80 + i*2, spu_config[i], psxRegs.cycle);
}
+static void hleExc0_0_1();
+static void hleExc0_0_2();
+static void hleExc0_1_1();
+static void hleExc0_1_2();
+
#include "sjisfont.h"
void psxBiosInit() {
u32 *ptr, *ram32, *rom32;
+ char *romc;
int i;
uLongf len;
rom32 = (u32 *)psxR;
rom32[0x100/4] = SWAP32(0x19951204);
rom32[0x104/4] = SWAP32(3);
- strcpy(psxR + 0x108, "PCSX authors");
- strcpy(psxR + 0x12c, "CEX-3000 PCSX HLE"); // see psxBios_GetSystemInfo
- strcpy(psxR + 0x7ff32, "System ROM Version 2.2 12/04/95 A");
- strcpy(psxR + 0x7ff54, "GPL-2.0-or-later");
+ romc = (char *)psxR;
+ strcpy(romc + 0x108, "PCSX authors");
+ strcpy(romc + 0x12c, "CEX-3000 PCSX HLE"); // see psxBios_GetSystemInfo
+ strcpy(romc + 0x7ff32, "System ROM Version 2.2 12/04/95 A");
+ strcpy(romc + 0x7ff54, "GPL-2.0-or-later");
// fonts
len = 0x80000 - 0x66000;
// (or rather the funcs listed there)
ptr = (u32 *)&psxM[A_A0_TABLE];
for (i = 0; i < 256; i++)
- ptr[i] = SWAP32(0x1000);
+ ptr[i] = SWAP32(A_A0_DUMMY);
ptr = (u32 *)&psxM[A_B0_TABLE];
for (i = 0; i < 256; i++)
- ptr[i] = SWAP32(0x2000);
+ ptr[i] = SWAP32(A_B0_DUMMY);
// B(5b) is special because games patch (sometimes even jump to)
// code at fixed offsets from it, nocash lists offsets:
// patch: +3d8, +4dc, +594, +62c, +9c8, +1988
// call: +7a0=4b70, +884=4c54, +894=4c64
- ptr[0x5b] = SWAP32(0x43d0);
+ ptr[0x5b] = SWAP32(A_B0_5B_DUMMY); // 0x43d0
ram32[0x4b70/4] = SWAP32(0x03e00008); // jr $ra // setPadOutputBuf
ram32[0x4c54/4] = SWAP32(0x240e0001); // mov $t6, 1
ptr = (u32 *)&psxM[A_C0_TABLE];
for (i = 0; i < 256/2; i++)
- ptr[i] = SWAP32(0x3000);
+ ptr[i] = SWAP32(A_C0_DUMMY);
ptr[6] = SWAP32(A_EXCEPTION);
// more HLE traps
- ram32[0x1000/4] = HLEOP(hleop_dummy);
- ram32[0x2000/4] = HLEOP(hleop_dummy);
- ram32[0x3000/4] = HLEOP(hleop_dummy);
+ ram32[A_A0_DUMMY/4] = HLEOP(hleop_dummy);
+ ram32[A_B0_DUMMY/4] = HLEOP(hleop_dummy);
+ ram32[A_C0_DUMMY/4] = HLEOP(hleop_dummy);
+ ram32[A_B0_5B_DUMMY/4] = HLEOP(hleop_dummy);
ram32[0x8000/4] = HLEOP(hleop_execret);
ram32[A_EEXIT_PTR/4] = SWAP32(A_EEXIT_DEF);
// hleExc0_{0,1}* are usually removed by A(56)/A(72) on the game's startup,
// so this is only partially implemented
-void hleExc0_0_1() // A(93h) - CdromDmaIrqFunc2
+static void hleExc0_0_1() // A(93h) - CdromDmaIrqFunc2
{
u32 cdrom_dma_ack_enable = 1; // a000b93c
handle_chain_x_x_1(cdrom_dma_ack_enable, 3); // IRQ3 DMA
}
-void hleExc0_0_2() // A(91h) - CdromDmaIrqFunc1
+static void hleExc0_0_2() // A(91h) - CdromDmaIrqFunc1
{
u32 ret = 0;
//PSXBIOS_LOG("%s\n", __func__);
mips_return_c(ret, 20);
}
-void hleExc0_1_1() // A(92h) - CdromIoIrqFunc2
+static void hleExc0_1_1() // A(92h) - CdromIoIrqFunc2
{
u32 cdrom_irq_ack_enable = 1; // a000b938
handle_chain_x_x_1(cdrom_irq_ack_enable, 2); // IRQ2 cdrom
}
-void hleExc0_1_2() // A(90h) - CdromIoIrqFunc1
+static void hleExc0_1_2() // A(90h) - CdromIoIrqFunc1
{
u32 ret = 0;
if (psxHu32(0x1074) & psxHu32(0x1070) & 4) { // IRQ2 cdrom
mips_return_c(ret, 20);
}
-void hleExc0_2_2_syscall() // not in any A/B/C table
+static void hleExc0_2_2_syscall() // not in any A/B/C table
{
u32 tcbPtr = loadRam32(A_TT_PCB);
TCB *tcb = loadRam32ptr(tcbPtr);
psxBios_ReturnFromException();
}
-void hleExc1_0_1(void)
+static void hleExc1_0_1(void)
{
u32 vbl_irq_ack_enable = loadRam32(A_RCNT_VBL_ACK + 0x0c); // 860c
handle_chain_x_x_1(vbl_irq_ack_enable, 0); // IRQ0 vblank
mips_return_c(ret, 22);
}
-void hleExc1_0_2(void)
+static void hleExc1_0_2(void)
{
handle_chain_1_x_2(3, 0); // IRQ0 vblank
}
-void hleExc1_1_1(void)
+static void hleExc1_1_1(void)
{
u32 rcnt_irq_ack_enable = loadRam32(A_RCNT_VBL_ACK + 0x08); // 8608
handle_chain_x_x_1(rcnt_irq_ack_enable, 6); // IRQ6 rcnt2
}
-void hleExc1_1_2(void)
+static void hleExc1_1_2(void)
{
handle_chain_1_x_2(2, 6); // IRQ6 rcnt2
}
-void hleExc1_2_1(void)
+static void hleExc1_2_1(void)
{
u32 rcnt_irq_ack_enable = loadRam32(A_RCNT_VBL_ACK + 0x04); // 8604
handle_chain_x_x_1(rcnt_irq_ack_enable, 5); // IRQ5 rcnt1
}
-void hleExc1_2_2(void)
+static void hleExc1_2_2(void)
{
handle_chain_1_x_2(1, 5); // IRQ5 rcnt1
}
-void hleExc1_3_1(void)
+static void hleExc1_3_1(void)
{
u32 rcnt_irq_ack_enable = loadRam32(A_RCNT_VBL_ACK + 0x00); // 8600
handle_chain_x_x_1(rcnt_irq_ack_enable, 4); // IRQ4 rcnt0
}
-void hleExc1_3_2(void)
+static void hleExc1_3_2(void)
{
handle_chain_1_x_2(0, 4); // IRQ4 rcnt0
}
-void hleExc3_0_2_defint(void)
+static void hleExc3_0_2_defint(void)
{
static const struct {
u8 ev, irqbit;
mips_return_c(0, 11 + 7*11 + 7*11 + 12);
}
-void hleExcPadCard1(void)
+static void hleExcPadCard1(void)
{
if (loadRam32(A_PAD_IRQR_ENA)) {
u8 *pad_buf1 = loadRam8ptr(A_PAD_INBUF + 0);
mips_return_c(0, 18);
}
-void hleExcPadCard2(void)
+static void hleExcPadCard2(void)
{
u32 ret = psxHu32(0x1074) & psxHu32(0x1070) & 1;
mips_return_c(ret, 15);
psxBios_ReturnFromException();
}
+/* HLE */
+static void hleDummy() {
+ log_unhandled("hleDummy called @%08x ra=%08x\n", psxRegs.pc - 4, ra);
+ psxRegs.pc = ra;
+ psxRegs.cycle += 1000;
+
+ psxBranchTest();
+}
+
+static void hleA0() {
+ u32 call = t1 & 0xff;
+ u32 entry = loadRam32(A_A0_TABLE + call * 4);
+
+ if (call < 192 && entry != A_A0_DUMMY) {
+ PSXBIOS_LOG("custom A%02x %s(0x%x, ) addr=%08x ra=%08x\n",
+ call, biosA0n[call], a0, entry, ra);
+ softCall(entry);
+ pc0 = ra;
+ PSXBIOS_LOG(" -> %08x\n", v0);
+ }
+ else if (biosA0[call])
+ biosA0[call]();
+
+ psxBranchTest();
+}
+
+static void hleB0() {
+ u32 call = t1 & 0xff;
+ u32 entry = loadRam32(A_B0_TABLE + call * 4);
+ int is_custom = 0;
+
+ if (call == 0x5b)
+ is_custom = entry != A_B0_5B_DUMMY;
+ else
+ is_custom = entry != A_B0_DUMMY;
+ if (is_custom) {
+ PSXBIOS_LOG("custom B%02x %s(0x%x, ) addr=%08x ra=%08x\n",
+ call, biosB0n[call], a0, entry, ra);
+ softCall(entry);
+ pc0 = ra;
+ PSXBIOS_LOG(" -> %08x\n", v0);
+ }
+ else if (biosB0[call])
+ biosB0[call]();
+
+ psxBranchTest();
+}
+
+static void hleC0() {
+ u32 call = t1 & 0xff;
+ u32 entry = loadRam32(A_C0_TABLE + call * 4);
+
+ if (call < 128 && entry != A_C0_DUMMY) {
+ PSXBIOS_LOG("custom C%02x %s(0x%x, ) addr=%08x ra=%08x\n",
+ call, biosC0n[call], a0, entry, ra);
+ softCall(entry);
+ pc0 = ra;
+ PSXBIOS_LOG(" -> %08x\n", v0);
+ }
+ else if (biosC0[call])
+ biosC0[call]();
+
+ psxBranchTest();
+}
+
+// currently not used
+static void hleBootstrap() {
+ CheckCdrom();
+ LoadCdrom();
+}
+
+static void hleExecRet() {
+ const EXEC *header = (EXEC *)PSXM(s0);
+
+ PSXBIOS_LOG("ExecRet %x: %x\n", s0, header->ret);
+
+ ra = SWAP32(header->ret);
+ sp = SWAP32(header->_sp);
+ fp = SWAP32(header->_fp);
+ gp = SWAP32(header->_gp);
+ s0 = SWAP32(header->base);
+
+ v0 = 1;
+ psxRegs.pc = ra;
+}
+
+void (* const psxHLEt[24])() = {
+ hleDummy, hleA0, hleB0, hleC0,
+ hleBootstrap, hleExecRet, psxBiosException, hleDummy,
+ hleExc0_0_1, hleExc0_0_2,
+ hleExc0_1_1, hleExc0_1_2, hleExc0_2_2_syscall,
+ hleExc1_0_1, hleExc1_0_2,
+ hleExc1_1_1, hleExc1_1_2,
+ hleExc1_2_1, hleExc1_2_2,
+ hleExc1_3_1, hleExc1_3_2,
+ hleExc3_0_2_defint,
+ hleExcPadCard1, hleExcPadCard2,
+};
+
+
#define bfreeze(ptr, size) { \
if (Mode == 1) memcpy(&psxR[base], ptr, size); \
if (Mode == 0) memcpy(ptr, &psxR[base], size); \
notaz.gp2x.de / pcsx_rearmed.git / blobdiff