17 #include "../psxdma.h"
19 #include "../psxmem.h"
20 #include "../r3000a.h"
21 #include "../psxinterpreter.h"
22 #include "../psxhle.h"
23 #include "../psxevents.h"
25 #include "../frontend/main.h"
30 #if (defined(__arm__) || defined(__aarch64__)) && !defined(ALLOW_LIGHTREC_ON_ARM)
31 #error "Lightrec should not be used on ARM (please specify DYNAREC=ari64 to make)"
34 #define ARRAY_SIZE(x) (sizeof(x) ? sizeof(x) / sizeof((x)[0]) : 0)
36 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
37 # define LE32TOH(x) __builtin_bswap32(x)
38 # define HTOLE32(x) __builtin_bswap32(x)
39 # define LE16TOH(x) __builtin_bswap16(x)
40 # define HTOLE16(x) __builtin_bswap16(x)
42 # define LE32TOH(x) (x)
43 # define HTOLE32(x) (x)
44 # define LE16TOH(x) (x)
45 # define HTOLE16(x) (x)
49 # define likely(x) __builtin_expect(!!(x),1)
50 # define unlikely(x) __builtin_expect(!!(x),0)
52 # define likely(x) (x)
53 # define unlikely(x) (x)
61 static struct lightrec_state *lightrec_state;
63 static char *name = "retroarch.exe";
65 static bool use_lightrec_interpreter;
66 static bool use_pcsx_interpreter;
67 static bool block_stepping;
69 extern u32 lightrec_hacks;
71 extern void lightrec_code_inv(void *ptr, uint32_t len);
98 static void (*cp2_ops[])(struct psxCP2Regs *) = {
99 [OP_CP2_RTPS] = gteRTPS,
100 [OP_CP2_RTPS] = gteRTPS,
101 [OP_CP2_NCLIP] = gteNCLIP,
103 [OP_CP2_DPCS] = gteDPCS,
104 [OP_CP2_INTPL] = gteINTPL,
105 [OP_CP2_MVMVA] = gteMVMVA,
106 [OP_CP2_NCDS] = gteNCDS,
107 [OP_CP2_CDP] = gteCDP,
108 [OP_CP2_NCDT] = gteNCDT,
109 [OP_CP2_NCCS] = gteNCCS,
111 [OP_CP2_NCS] = gteNCS,
112 [OP_CP2_NCT] = gteNCT,
113 [OP_CP2_SQR] = gteSQR,
114 [OP_CP2_DCPL] = gteDCPL,
115 [OP_CP2_DPCT] = gteDPCT,
116 [OP_CP2_AVSZ3] = gteAVSZ3,
117 [OP_CP2_AVSZ4] = gteAVSZ4,
118 [OP_CP2_RTPT] = gteRTPT,
119 [OP_CP2_GPF] = gteGPF,
120 [OP_CP2_GPL] = gteGPL,
121 [OP_CP2_NCCT] = gteNCCT,
124 static char cache_buf[64 * 1024];
126 static void cop2_op(struct lightrec_state *state, u32 func)
128 struct lightrec_registers *regs = lightrec_get_registers(state);
132 if (unlikely(!cp2_ops[func & 0x3f])) {
133 fprintf(stderr, "Invalid CP2 function %u\n", func);
135 /* This works because regs->cp2c comes right after regs->cp2d,
136 * so it can be cast to a pcsxCP2Regs pointer. */
137 cp2_ops[func & 0x3f]((psxCP2Regs *) regs->cp2d);
141 static bool has_interrupt(void)
143 struct lightrec_registers *regs = lightrec_get_registers(lightrec_state);
145 return ((psxHu32(0x1070) & psxHu32(0x1074)) &&
146 (regs->cp0[12] & 0x401) == 0x401) ||
147 (regs->cp0[12] & regs->cp0[13] & 0x0300);
150 static void lightrec_tansition_to_pcsx(struct lightrec_state *state)
152 psxRegs.cycle += lightrec_current_cycle_count(state) / 1024;
153 lightrec_reset_cycle_count(state, 0);
156 static void lightrec_tansition_from_pcsx(struct lightrec_state *state)
158 s32 cycles_left = next_interupt - psxRegs.cycle;
160 if (block_stepping || cycles_left <= 0 || has_interrupt())
161 lightrec_set_exit_flags(state, LIGHTREC_EXIT_CHECK_INTERRUPT);
163 lightrec_set_target_cycle_count(state, cycles_left * 1024);
167 static void hw_write_byte(struct lightrec_state *state,
168 u32 op, void *host, u32 mem, u32 val)
170 lightrec_tansition_to_pcsx(state);
172 psxHwWrite8(mem, val);
174 lightrec_tansition_from_pcsx(state);
177 static void hw_write_half(struct lightrec_state *state,
178 u32 op, void *host, u32 mem, u32 val)
180 lightrec_tansition_to_pcsx(state);
182 psxHwWrite16(mem, val);
184 lightrec_tansition_from_pcsx(state);
187 static void hw_write_word(struct lightrec_state *state,
188 u32 op, void *host, u32 mem, u32 val)
190 lightrec_tansition_to_pcsx(state);
192 psxHwWrite32(mem, val);
194 lightrec_tansition_from_pcsx(state);
197 static u8 hw_read_byte(struct lightrec_state *state, u32 op, void *host, u32 mem)
201 lightrec_tansition_to_pcsx(state);
203 val = psxHwRead8(mem);
205 lightrec_tansition_from_pcsx(state);
210 static u16 hw_read_half(struct lightrec_state *state,
211 u32 op, void *host, u32 mem)
215 lightrec_tansition_to_pcsx(state);
217 val = psxHwRead16(mem);
219 lightrec_tansition_from_pcsx(state);
224 static u32 hw_read_word(struct lightrec_state *state,
225 u32 op, void *host, u32 mem)
229 lightrec_tansition_to_pcsx(state);
231 val = psxHwRead32(mem);
233 lightrec_tansition_from_pcsx(state);
238 static struct lightrec_mem_map_ops hw_regs_ops = {
247 static u32 cache_ctrl;
249 static void cache_ctrl_write_word(struct lightrec_state *state,
250 u32 op, void *host, u32 mem, u32 val)
255 static u32 cache_ctrl_read_word(struct lightrec_state *state,
256 u32 op, void *host, u32 mem)
261 static struct lightrec_mem_map_ops cache_ctrl_ops = {
262 .sw = cache_ctrl_write_word,
263 .lw = cache_ctrl_read_word,
266 static struct lightrec_mem_map lightrec_map[] = {
267 [PSX_MAP_KERNEL_USER_RAM] = {
268 /* Kernel and user memory */
277 [PSX_MAP_SCRATCH_PAD] = {
282 [PSX_MAP_PARALLEL_PORT] = {
287 [PSX_MAP_HW_REGISTERS] = {
288 /* Hardware registers */
293 [PSX_MAP_CACHE_CONTROL] = {
297 .ops = &cache_ctrl_ops,
300 /* Mirrors of the kernel/user memory */
301 [PSX_MAP_MIRROR1] = {
304 .mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
306 [PSX_MAP_MIRROR2] = {
309 .mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
311 [PSX_MAP_MIRROR3] = {
314 .mirror_of = &lightrec_map[PSX_MAP_KERNEL_USER_RAM],
317 /* Mirror of the parallel port. Only used by the PS2/PS3 BIOS */
318 [PSX_MAP_PPORT_MIRROR] = {
321 .mirror_of = &lightrec_map[PSX_MAP_PARALLEL_PORT],
325 [PSX_MAP_CODE_BUFFER] = {
326 .length = CODE_BUFFER_SIZE,
330 static void lightrec_enable_ram(struct lightrec_state *state, bool enable)
333 memcpy(psxM, cache_buf, sizeof(cache_buf));
335 memcpy(cache_buf, psxM, sizeof(cache_buf));
338 static bool lightrec_can_hw_direct(u32 kaddr, bool is_write, u8 size)
340 if (is_write && size != 32) {
341 // force32 so must go through handlers
342 if (0x1f801000 <= kaddr && kaddr < 0x1f801024)
344 if ((kaddr & 0x1fffff80) == 0x1f801080) // dma
386 return kaddr < 0x1f801c00 || kaddr >= 0x1f801e00;
417 return !is_write || kaddr < 0x1f801c00 || kaddr >= 0x1f801e00;
422 static const struct lightrec_ops lightrec_ops = {
424 .enable_ram = lightrec_enable_ram,
425 .hw_direct = lightrec_can_hw_direct,
426 .code_inv = LIGHTREC_CODE_INV ? lightrec_code_inv : NULL,
429 static int lightrec_plugin_init(void)
431 lightrec_map[PSX_MAP_KERNEL_USER_RAM].address = psxM;
432 lightrec_map[PSX_MAP_BIOS].address = psxR;
433 lightrec_map[PSX_MAP_SCRATCH_PAD].address = psxH;
434 lightrec_map[PSX_MAP_HW_REGISTERS].address = psxH + 0x1000;
435 lightrec_map[PSX_MAP_PARALLEL_PORT].address = psxP;
437 if (!LIGHTREC_CUSTOM_MAP) {
439 code_buffer = mmap(0, CODE_BUFFER_SIZE,
440 PROT_EXEC | PROT_READ | PROT_WRITE,
441 MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
442 if (code_buffer == MAP_FAILED)
445 code_buffer = malloc(CODE_BUFFER_SIZE);
451 if (LIGHTREC_CUSTOM_MAP) {
452 lightrec_map[PSX_MAP_MIRROR1].address = psxM + 0x200000;
453 lightrec_map[PSX_MAP_MIRROR2].address = psxM + 0x400000;
454 lightrec_map[PSX_MAP_MIRROR3].address = psxM + 0x600000;
457 lightrec_map[PSX_MAP_CODE_BUFFER].address = code_buffer;
459 use_lightrec_interpreter = !!getenv("LIGHTREC_INTERPRETER");
461 lightrec_state = lightrec_init(name,
462 lightrec_map, ARRAY_SIZE(lightrec_map),
465 // fprintf(stderr, "M=0x%lx, P=0x%lx, R=0x%lx, H=0x%lx\n",
469 // (uintptr_t) psxH);
472 signal(SIGPIPE, exit);
477 static void lightrec_plugin_sync_regs_to_pcsx(bool need_cp2);
478 static void lightrec_plugin_sync_regs_from_pcsx(bool need_cp2);
480 static void lightrec_plugin_execute_internal(bool block_only)
482 struct lightrec_registers *regs;
483 u32 flags, cycles_pcsx;
485 regs = lightrec_get_registers(lightrec_state);
486 gen_interupt((psxCP0Regs *)regs->cp0);
487 if (!block_only && stop)
490 cycles_pcsx = next_interupt - psxRegs.cycle;
491 assert((s32)cycles_pcsx > 0);
493 // step during early boot so that 0x80030000 fastboot hack works
494 block_stepping = block_only;
498 if (use_pcsx_interpreter) {
501 u32 cycles_lightrec = cycles_pcsx * 1024;
502 if (unlikely(use_lightrec_interpreter)) {
503 psxRegs.pc = lightrec_run_interpreter(lightrec_state,
507 psxRegs.pc = lightrec_execute(lightrec_state,
508 psxRegs.pc, cycles_lightrec);
511 lightrec_tansition_to_pcsx(lightrec_state);
513 flags = lightrec_exit_flags(lightrec_state);
515 if (flags & LIGHTREC_EXIT_SEGFAULT) {
516 fprintf(stderr, "Exiting at cycle 0x%08x\n",
521 if (flags & LIGHTREC_EXIT_SYSCALL)
522 psxException(R3000E_Syscall << 2, 0, (psxCP0Regs *)regs->cp0);
523 if (flags & LIGHTREC_EXIT_BREAK)
524 psxException(R3000E_Bp << 2, 0, (psxCP0Regs *)regs->cp0);
525 else if (flags & LIGHTREC_EXIT_UNKNOWN_OP) {
526 u32 op = intFakeFetch(psxRegs.pc);
527 u32 hlec = op & 0x03ffffff;
528 if ((op >> 26) == 0x3b && hlec < ARRAY_SIZE(psxHLEt) && Config.HLE) {
529 lightrec_plugin_sync_regs_to_pcsx(0);
531 lightrec_plugin_sync_regs_from_pcsx(0);
534 psxException(R3000E_RI << 2, 0, (psxCP0Regs *)regs->cp0);
538 if ((regs->cp0[13] & regs->cp0[12] & 0x300) && (regs->cp0[12] & 0x1)) {
539 /* Handle software interrupts */
540 regs->cp0[13] &= ~0x7c;
541 psxException(regs->cp0[13], 0, (psxCP0Regs *)regs->cp0);
545 static void lightrec_plugin_execute(void)
548 lightrec_plugin_execute_internal(false);
551 static void lightrec_plugin_execute_block(enum blockExecCaller caller)
553 lightrec_plugin_execute_internal(true);
556 static void lightrec_plugin_clear(u32 addr, u32 size)
558 if ((addr == 0 && size == UINT32_MAX)
559 || (lightrec_hacks & LIGHTREC_OPT_INV_DMA_ONLY))
560 lightrec_invalidate_all(lightrec_state);
562 /* size * 4: PCSX uses DMA units */
563 lightrec_invalidate(lightrec_state, addr, size * 4);
566 static void lightrec_plugin_notify(enum R3000Anote note, void *data)
570 case R3000ACPU_NOTIFY_CACHE_ISOLATED:
571 case R3000ACPU_NOTIFY_CACHE_UNISOLATED:
572 /* not used, lightrec calls lightrec_enable_ram() instead */
574 case R3000ACPU_NOTIFY_BEFORE_SAVE:
575 /* non-null 'data' means this is HLE related sync */
576 lightrec_plugin_sync_regs_to_pcsx(data == NULL);
578 case R3000ACPU_NOTIFY_AFTER_LOAD:
579 lightrec_plugin_sync_regs_from_pcsx(data == NULL);
581 lightrec_invalidate_all(lightrec_state);
586 static void lightrec_plugin_apply_config()
588 static u32 cycles_per_op_old;
589 u32 cycle_mult = Config.cycle_multiplier_override && Config.cycle_multiplier == CYCLE_MULT_DEFAULT
590 ? Config.cycle_multiplier_override : Config.cycle_multiplier;
591 u32 cycles_per_op = cycle_mult * 1024 / 100;
592 assert(cycles_per_op);
594 if (cycles_per_op_old && cycles_per_op_old != cycles_per_op) {
595 SysPrintf("lightrec: reinit block cache for cycles_per_op %.2f\n",
596 cycles_per_op / 1024.f);
598 cycles_per_op_old = cycles_per_op;
599 lightrec_set_cycles_per_opcode(lightrec_state, cycles_per_op);
602 static void lightrec_plugin_shutdown(void)
604 lightrec_destroy(lightrec_state);
606 if (!LIGHTREC_CUSTOM_MAP) {
608 munmap(code_buffer, CODE_BUFFER_SIZE);
615 static void lightrec_plugin_reset(void)
617 struct lightrec_registers *regs;
619 regs = lightrec_get_registers(lightrec_state);
621 /* Invalidate all blocks */
622 lightrec_invalidate_all(lightrec_state);
624 /* Reset registers */
625 memset(regs, 0, sizeof(*regs));
627 regs->cp0[12] = 0x10900000; // COP0 enabled | BEV = 1 | TS = 1
628 regs->cp0[15] = 0x00000002; // PRevID = Revision ID, same as R3000A
630 lightrec_set_unsafe_opt_flags(lightrec_state, lightrec_hacks);
633 static void lightrec_plugin_sync_regs_from_pcsx(bool need_cp2)
635 struct lightrec_registers *regs;
637 regs = lightrec_get_registers(lightrec_state);
638 memcpy(regs->gpr, &psxRegs.GPR, sizeof(regs->gpr));
639 memcpy(regs->cp0, &psxRegs.CP0, sizeof(regs->cp0));
641 memcpy(regs->cp2d, &psxRegs.CP2, sizeof(regs->cp2d) + sizeof(regs->cp2c));
644 static void lightrec_plugin_sync_regs_to_pcsx(bool need_cp2)
646 struct lightrec_registers *regs;
648 regs = lightrec_get_registers(lightrec_state);
649 memcpy(&psxRegs.GPR, regs->gpr, sizeof(regs->gpr));
650 memcpy(&psxRegs.CP0, regs->cp0, sizeof(regs->cp0));
652 memcpy(&psxRegs.CP2, regs->cp2d, sizeof(regs->cp2d) + sizeof(regs->cp2c));
657 lightrec_plugin_init,
658 lightrec_plugin_reset,
659 lightrec_plugin_execute,
660 lightrec_plugin_execute_block,
661 lightrec_plugin_clear,
662 lightrec_plugin_notify,
663 lightrec_plugin_apply_config,
664 lightrec_plugin_shutdown,