spu: rework synchronization
[pcsx_rearmed.git] / libpcsxcore / new_dynarec / emu_if.c
index cee61cc..89e2bd6 100644 (file)
+/*
+ * (C) GraÅžvydas "notaz" Ignotas, 2010-2011
+ *
+ * This work is licensed under the terms of GNU GPL version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
 #include <stdio.h>
 
 #include "emu_if.h"
+#include "pcsxmem.h"
+#include "../psxhle.h"
+#include "../r3000a.h"
+#include "../cdrom.h"
+#include "../psxdma.h"
+#include "../mdec.h"
+#include "../gte_arm.h"
+#include "../gte_neon.h"
+#define FLAGLESS
+#include "../gte.h"
+
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
+
+//#define evprintf printf
+#define evprintf(...)
 
 char invalid_code[0x100000];
+static u32 scratch_buf[8*8*2] __attribute__((aligned(64)));
+u32 event_cycles[PSXINT_COUNT];
 
-void MFC0(void)
+static void schedule_timeslice(void)
 {
-       printf("MFC0!\n");
+       u32 i, c = psxRegs.cycle;
+       u32 irqs = psxRegs.interrupt;
+       s32 min, dif;
+
+       min = PSXCLK;
+       for (i = 0; irqs != 0; i++, irqs >>= 1) {
+               if (!(irqs & 1))
+                       continue;
+               dif = event_cycles[i] - c;
+               //evprintf("  ev %d\n", dif);
+               if (0 < dif && dif < min)
+                       min = dif;
+       }
+       next_interupt = c + min;
+}
+
+typedef void (irq_func)();
+
+static irq_func * const irq_funcs[] = {
+       [PSXINT_SIO]    = sioInterrupt,
+       [PSXINT_CDR]    = cdrInterrupt,
+       [PSXINT_CDREAD] = cdrReadInterrupt,
+       [PSXINT_GPUDMA] = gpuInterrupt,
+       [PSXINT_MDECOUTDMA] = mdec1Interrupt,
+       [PSXINT_SPUDMA] = spuInterrupt,
+       [PSXINT_MDECINDMA] = mdec0Interrupt,
+       [PSXINT_GPUOTCDMA] = gpuotcInterrupt,
+       [PSXINT_CDRDMA] = cdrDmaInterrupt,
+       [PSXINT_CDRLID] = cdrLidSeekInterrupt,
+       [PSXINT_CDRPLAY] = cdrPlayInterrupt,
+       [PSXINT_SPU_UPDATE] = spuUpdate,
+       [PSXINT_RCNT] = psxRcntUpdate,
+};
+
+/* local dupe of psxBranchTest, using event_cycles */
+static void irq_test(void)
+{
+       u32 irqs = psxRegs.interrupt;
+       u32 cycle = psxRegs.cycle;
+       u32 irq, irq_bits;
+
+       // irq_funcs() may queue more irqs
+       psxRegs.interrupt = 0;
+
+       for (irq = 0, irq_bits = irqs; irq_bits != 0; irq++, irq_bits >>= 1) {
+               if (!(irq_bits & 1))
+                       continue;
+               if ((s32)(cycle - event_cycles[irq]) >= 0) {
+                       irqs &= ~(1 << irq);
+                       irq_funcs[irq]();
+               }
+       }
+       psxRegs.interrupt |= irqs;
+
+       if ((psxHu32(0x1070) & psxHu32(0x1074)) && (Status & 0x401) == 0x401) {
+               psxException(0x400, 0);
+               pending_exception = 1;
+       }
 }
 
 void gen_interupt()
 {
-       printf("gen_interupt\n");
+       evprintf("  +ge %08x, %u->%u\n", psxRegs.pc, psxRegs.cycle, next_interupt);
+
+       irq_test();
+       //psxBranchTest();
+       //pending_exception = 1;
+
+       schedule_timeslice();
+
+       evprintf("  -ge %08x, %u->%u (%d)\n", psxRegs.pc, psxRegs.cycle,
+               next_interupt, next_interupt - psxRegs.cycle);
+}
+
+// from interpreter
+extern void MTC0(int reg, u32 val);
+
+void pcsx_mtc0(u32 reg, u32 val)
+{
+       evprintf("MTC0 %d #%x @%08x %u\n", reg, val, psxRegs.pc, psxRegs.cycle);
+       MTC0(reg, val);
+       gen_interupt();
+       if (Cause & Status & 0x0300) // possible sw irq
+               pending_exception = 1;
 }
 
-void check_interupt()
+void pcsx_mtc0_ds(u32 reg, u32 val)
 {
-       printf("check_interupt\n");
+       evprintf("MTC0 %d #%x @%08x %u\n", reg, val, psxRegs.pc, psxRegs.cycle);
+       MTC0(reg, val);
 }
 
-void read_nomem_new()
+void new_dyna_save(void)
 {
-       printf("read_nomem_new\n");
+       psxRegs.interrupt &= ~(1 << PSXINT_RCNT); // old savestate compat
+
+       // psxRegs.intCycle is always maintained, no need to convert
 }
 
-static void read_mem()
+void new_dyna_after_save(void)
 {
-       printf("read_mem %08x\n", address);
+       psxRegs.interrupt |= 1 << PSXINT_RCNT;
 }
 
-static void write_mem()
+void new_dyna_restore(void)
 {
-       printf("write_mem %08x\n", address);
+       int i;
+       for (i = 0; i < PSXINT_COUNT; i++)
+               event_cycles[i] = psxRegs.intCycle[i].sCycle + psxRegs.intCycle[i].cycle;
+
+       event_cycles[PSXINT_RCNT] = psxNextsCounter + psxNextCounter;
+       psxRegs.interrupt |=  1 << PSXINT_RCNT;
+       psxRegs.interrupt &= (1 << PSXINT_COUNT) - 1;
+
+       new_dyna_pcsx_mem_load_state();
 }
 
-void (*readmem[0x10000])();
-void (*readmemb[0x10000])();
-void (*readmemh[0x10000])();
-void (*writemem[0x10000])();
-void (*writememb[0x10000])();
-void (*writememh[0x10000])();
+/* GTE stuff */
+void *gte_handlers[64];
 
+void *gte_handlers_nf[64] = {
+       NULL      , gteRTPS_nf , NULL       , NULL      , NULL     , NULL       , gteNCLIP_nf, NULL      , // 00
+       NULL      , NULL       , NULL       , NULL      , gteOP_nf , NULL       , NULL       , NULL      , // 08
+       gteDPCS_nf, gteINTPL_nf, gteMVMVA_nf, gteNCDS_nf, gteCDP_nf, NULL       , gteNCDT_nf , NULL      , // 10
+       NULL      , NULL       , NULL       , gteNCCS_nf, gteCC_nf , NULL       , gteNCS_nf  , NULL      , // 18
+       gteNCT_nf , NULL       , NULL       , NULL      , NULL     , NULL       , NULL       , NULL      , // 20
+       gteSQR_nf , gteDCPL_nf , gteDPCT_nf , NULL      , NULL     , gteAVSZ3_nf, gteAVSZ4_nf, NULL      , // 28 
+       gteRTPT_nf, NULL       , NULL       , NULL      , NULL     , NULL       , NULL       , NULL      , // 30
+       NULL      , NULL       , NULL       , NULL      , NULL     , gteGPF_nf  , gteGPL_nf  , gteNCCT_nf, // 38
+};
+
+const char *gte_regnames[64] = {
+       NULL  , "RTPS" , NULL   , NULL  , NULL , NULL   , "NCLIP", NULL  , // 00
+       NULL  , NULL   , NULL   , NULL  , "OP" , NULL   , NULL   , NULL  , // 08
+       "DPCS", "INTPL", "MVMVA", "NCDS", "CDP", NULL   , "NCDT" , NULL  , // 10
+       NULL  , NULL   , NULL   , "NCCS", "CC" , NULL   , "NCS"  , NULL  , // 18
+       "NCT" , NULL   , NULL   , NULL  , NULL , NULL   , NULL   , NULL  , // 20
+       "SQR" , "DCPL" , "DPCT" , NULL  , NULL , "AVSZ3", "AVSZ4", NULL  , // 28 
+       "RTPT", NULL   , NULL   , NULL  , NULL , NULL   , NULL   , NULL  , // 30
+       NULL  , NULL   , NULL   , NULL  , NULL , "GPF"  , "GPL"  , "NCCT", // 38
+};
+
+/* from gte.txt.. not sure if this is any good. */
+const char gte_cycletab[64] = {
+       /*   1   2   3   4   5   6   7   8   9   a   b   c   d   e   f */
+        0, 15,  0,  0,  0,  0,  8,  0,  0,  0,  0,  0,  6,  0,  0,  0,
+        8,  8,  8, 19, 13,  0, 44,  0,  0,  0,  0, 17, 11,  0, 14,  0,
+       30,  0,  0,  0,  0,  0,  0,  0,  5,  8, 17,  0,  0,  5,  6,  0,
+       23,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  5,  5, 39,
+};
+
+#define GCBIT(x) \
+       (1ll << (32+x))
+#define GDBIT(x) \
+       (1ll << (x))
+#define GCBITS3(b0,b1,b2) \
+       (GCBIT(b0) | GCBIT(b1) | GCBIT(b2))
+#define GDBITS2(b0,b1) \
+       (GDBIT(b0) | GDBIT(b1))
+#define GDBITS3(b0,b1,b2) \
+       (GDBITS2(b0,b1) | GDBIT(b2))
+#define GDBITS4(b0,b1,b2,b3) \
+       (GDBITS3(b0,b1,b2) | GDBIT(b3))
+#define GDBITS5(b0,b1,b2,b3,b4) \
+       (GDBITS4(b0,b1,b2,b3) | GDBIT(b4))
+#define GDBITS6(b0,b1,b2,b3,b4,b5) \
+       (GDBITS5(b0,b1,b2,b3,b4) | GDBIT(b5))
+#define GDBITS7(b0,b1,b2,b3,b4,b5,b6) \
+       (GDBITS6(b0,b1,b2,b3,b4,b5) | GDBIT(b6))
+#define GDBITS8(b0,b1,b2,b3,b4,b5,b6,b7) \
+       (GDBITS7(b0,b1,b2,b3,b4,b5,b6) | GDBIT(b7))
+#define GDBITS9(b0,b1,b2,b3,b4,b5,b6,b7,b8) \
+       (GDBITS8(b0,b1,b2,b3,b4,b5,b6,b7) | GDBIT(b8))
+#define GDBITS10(b0,b1,b2,b3,b4,b5,b6,b7,b8,b9) \
+       (GDBITS9(b0,b1,b2,b3,b4,b5,b6,b7,b8) | GDBIT(b9))
+
+const uint64_t gte_reg_reads[64] = {
+       [GTE_RTPS]  = 0x1f0000ff00000000ll | GDBITS7(0,1,13,14,17,18,19),
+       [GTE_NCLIP] =                        GDBITS3(12,13,14),
+       [GTE_OP]    = GCBITS3(0,2,4)       | GDBITS3(9,10,11),
+       [GTE_DPCS]  = GCBITS3(21,22,23)    | GDBITS4(6,8,21,22),
+       [GTE_INTPL] = GCBITS3(21,22,23)    | GDBITS7(6,8,9,10,11,21,22),
+       [GTE_MVMVA] = 0x00ffffff00000000ll | GDBITS9(0,1,2,3,4,5,9,10,11), // XXX: maybe decode further?
+       [GTE_NCDS]  = 0x00ffff0000000000ll | GDBITS6(0,1,6,8,21,22),
+       [GTE_CDP]   = 0x00ffe00000000000ll | GDBITS7(6,8,9,10,11,21,22),
+       [GTE_NCDT]  = 0x00ffff0000000000ll | GDBITS8(0,1,2,3,4,5,6,8),
+       [GTE_NCCS]  = 0x001fff0000000000ll | GDBITS5(0,1,6,21,22),
+       [GTE_CC]    = 0x001fe00000000000ll | GDBITS6(6,9,10,11,21,22),
+       [GTE_NCS]   = 0x001fff0000000000ll | GDBITS5(0,1,6,21,22),
+       [GTE_NCT]   = 0x001fff0000000000ll | GDBITS7(0,1,2,3,4,5,6),
+       [GTE_SQR]   =                        GDBITS3(9,10,11),
+       [GTE_DCPL]  = GCBITS3(21,22,23)    | GDBITS7(6,8,9,10,11,21,22),
+       [GTE_DPCT]  = GCBITS3(21,22,23)    | GDBITS4(8,20,21,22),
+       [GTE_AVSZ3] = GCBIT(29)            | GDBITS3(17,18,19),
+       [GTE_AVSZ4] = GCBIT(30)            | GDBITS4(16,17,18,19),
+       [GTE_RTPT]  = 0x1f0000ff00000000ll | GDBITS7(0,1,2,3,4,5,19),
+       [GTE_GPF]   =                        GDBITS7(6,8,9,10,11,21,22),
+       [GTE_GPL]   =                        GDBITS10(6,8,9,10,11,21,22,25,26,27),
+       [GTE_NCCT]  = 0x001fff0000000000ll | GDBITS7(0,1,2,3,4,5,6),
+};
+
+// note: this excludes gteFLAG that is always written to
+const uint64_t gte_reg_writes[64] = {
+       [GTE_RTPS]  = 0x0f0f7f00ll,
+       [GTE_NCLIP] = GDBIT(24),
+       [GTE_OP]    = GDBITS6(9,10,11,25,26,27),
+       [GTE_DPCS]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_INTPL] = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_MVMVA] = GDBITS6(9,10,11,25,26,27),
+       [GTE_NCDS]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_CDP]   = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_NCDT]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_NCCS]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_CC]    = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_NCS]   = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_NCT]   = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_SQR]   = GDBITS6(9,10,11,25,26,27),
+       [GTE_DCPL]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_DPCT]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_AVSZ3] = GDBITS2(7,24),
+       [GTE_AVSZ4] = GDBITS2(7,24),
+       [GTE_RTPT]  = 0x0f0f7f00ll,
+       [GTE_GPF]   = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_GPL]   = GDBITS9(9,10,11,20,21,22,25,26,27),
+       [GTE_NCCT]  = GDBITS9(9,10,11,20,21,22,25,26,27),
+};
 
 static int ari64_init()
 {
+       extern void (*psxCP2[64])();
+       extern void psxNULL();
+       extern u_char *out;
        size_t i;
+
        new_dynarec_init();
+       new_dyna_pcsx_mem_init();
 
-       for (i = 0; i < sizeof(readmem) / sizeof(readmem[0]); i++) {
-               readmem[i] = read_mem;
-               writemem[i] = write_mem;
-       }
-       memcpy(readmemb, readmem, sizeof(readmem));
-       memcpy(readmemh, readmem, sizeof(readmem));
-       memcpy(writememb, writemem, sizeof(writemem));
-       memcpy(writememh, writemem, sizeof(writemem));
+       for (i = 0; i < ARRAY_SIZE(gte_handlers); i++)
+               if (psxCP2[i] != psxNULL)
+                       gte_handlers[i] = psxCP2[i];
+
+#if defined(__arm__) && !defined(DRC_DBG)
+       gte_handlers[0x06] = gteNCLIP_arm;
+#ifdef HAVE_ARMV5
+       gte_handlers_nf[0x01] = gteRTPS_nf_arm;
+       gte_handlers_nf[0x30] = gteRTPT_nf_arm;
+#endif
+#ifdef __ARM_NEON__
+       // compiler's _nf version is still a lot slower than neon
+       // _nf_arm RTPS is roughly the same, RTPT slower
+       gte_handlers[0x01] = gte_handlers_nf[0x01] = gteRTPS_neon;
+       gte_handlers[0x30] = gte_handlers_nf[0x30] = gteRTPT_neon;
+#endif
+#endif
+#ifdef DRC_DBG
+       memcpy(gte_handlers_nf, gte_handlers, sizeof(gte_handlers_nf));
+#endif
+       psxH_ptr = psxH;
+       zeromem_ptr = zero_mem;
+       scratch_buf_ptr = scratch_buf;
+
+       SysPrintf("Mapped (RAM/scrp/ROM/LUTs/TC):\n");
+       SysPrintf("%08x/%08x/%08x/%08x/%08x\n",
+               psxM, psxH, psxR, mem_rtab, out);
+
+       return 0;
 }
 
 static void ari64_reset()
 {
-       /* hmh */
        printf("ari64_reset\n");
+       new_dyna_pcsx_mem_reset();
+       invalidate_all_pages();
+       new_dyna_restore();
+       pending_exception = 1;
+}
+
+// execute until predefined leave points
+// (HLE softcall exit and BIOS fastboot end)
+static void ari64_execute_until()
+{
+       schedule_timeslice();
+
+       evprintf("ari64_execute %08x, %u->%u (%d)\n", psxRegs.pc,
+               psxRegs.cycle, next_interupt, next_interupt - psxRegs.cycle);
+
+       new_dyna_start();
+
+       evprintf("ari64_execute end %08x, %u->%u (%d)\n", psxRegs.pc,
+               psxRegs.cycle, next_interupt, next_interupt - psxRegs.cycle);
 }
 
 static void ari64_execute()
 {
-/*
-       FILE *f = fopen("/mnt/ntz/dev/pnd/tmp/ram.dump", "wb");
-       fwrite((void *)0x80000000, 1, 0x200000, f);
-       fclose(f);
-       exit(1);
-*/
-       printf("psxNextsCounter %d, psxNextCounter %d\n", psxNextsCounter, psxNextCounter);
-       printf("ari64_execute %08x\n", psxRegs.pc);
-       new_dyna_start(psxRegs.pc);
+       while (!stop) {
+               ari64_execute_until();
+               evprintf("drc left @%08x\n", psxRegs.pc);
+       }
 }
 
-static void ari64_clear(u32 Addr, u32 Size)
+static void ari64_clear(u32 addr, u32 size)
 {
+       u32 start, end, main_ram;
+
+       size *= 4; /* PCSX uses DMA units */
+
+       evprintf("ari64_clear %08x %04x\n", addr, size);
+
+       /* check for RAM mirrors */
+       main_ram = (addr & 0xffe00000) == 0x80000000;
+
+       start = addr >> 12;
+       end = (addr + size) >> 12;
+
+       for (; start <= end; start++)
+               if (!main_ram || !invalid_code[start])
+                       invalidate_block(start);
 }
 
 static void ari64_shutdown()
 {
        new_dynarec_cleanup();
+       new_dyna_pcsx_mem_shutdown();
 }
 
+extern void intExecute();
+extern void intExecuteT();
+extern void intExecuteBlock();
+extern void intExecuteBlockT();
+#ifndef DRC_DBG
+#define intExecuteT intExecute
+#define intExecuteBlockT intExecuteBlock
+#endif
+
 R3000Acpu psxRec = {
        ari64_init,
        ari64_reset,
+#ifndef DRC_DISABLE
        ari64_execute,
-// TODO        recExecuteBlock,
+       ari64_execute_until,
+#else
+       intExecuteT,
+       intExecuteBlockT,
+#endif
        ari64_clear,
        ari64_shutdown
 };
+
+// TODO: rm
+#ifndef DRC_DBG
+void do_insn_trace() {}
+void do_insn_cmp() {}
+#endif
+
+#ifdef DRC_DISABLE
+unsigned int address;
+int pending_exception, stop;
+unsigned int next_interupt;
+int new_dynarec_did_compile;
+int cycle_multiplier;
+int new_dynarec_hacks;
+void *psxH_ptr;
+void *zeromem_ptr;
+u8 zero_mem[0x1000];
+u_char *out;
+void *mem_rtab;
+void *scratch_buf_ptr;
+void new_dynarec_init() { (void)ari64_execute; }
+void new_dyna_start() {}
+void new_dynarec_cleanup() {}
+void new_dynarec_clear_full() {}
+void invalidate_all_pages() {}
+void invalidate_block(unsigned int block) {}
+void new_dyna_pcsx_mem_init(void) {}
+void new_dyna_pcsx_mem_reset(void) {}
+void new_dyna_pcsx_mem_load_state(void) {}
+void new_dyna_pcsx_mem_shutdown(void) {}
+#endif
+
+#ifdef DRC_DBG
+
+#include <stddef.h>
+static FILE *f;
+extern u32 last_io_addr;
+
+static void dump_mem(const char *fname, void *mem, size_t size)
+{
+       FILE *f1 = fopen(fname, "wb");
+       if (f1 == NULL)
+               f1 = fopen(strrchr(fname, '/') + 1, "wb");
+       fwrite(mem, 1, size, f1);
+       fclose(f1);
+}
+
+static u32 memcheck_read(u32 a)
+{
+       if ((a >> 16) == 0x1f80)
+               // scratchpad/IO
+               return *(u32 *)(psxH + (a & 0xfffc));
+
+       if ((a >> 16) == 0x1f00)
+               // parallel
+               return *(u32 *)(psxP + (a & 0xfffc));
+
+//     if ((a & ~0xe0600000) < 0x200000)
+       // RAM
+       return *(u32 *)(psxM + (a & 0x1ffffc));
+}
+
+void do_insn_trace(void)
+{
+       static psxRegisters oldregs;
+       static u32 old_io_addr = (u32)-1;
+       static u32 old_io_data = 0xbad0c0de;
+       static u32 event_cycles_o[PSXINT_COUNT];
+       u32 *allregs_p = (void *)&psxRegs;
+       u32 *allregs_o = (void *)&oldregs;
+       u32 io_data;
+       int i;
+       u8 byte;
+
+       //last_io_addr = 0x5e2c8;
+       if (f == NULL)
+               f = fopen("tracelog", "wb");
+
+       // log reg changes
+       oldregs.code = psxRegs.code; // don't care
+       for (i = 0; i < offsetof(psxRegisters, intCycle) / 4; i++) {
+               if (allregs_p[i] != allregs_o[i]) {
+                       fwrite(&i, 1, 1, f);
+                       fwrite(&allregs_p[i], 1, 4, f);
+                       allregs_o[i] = allregs_p[i];
+               }
+       }
+       // log event changes
+       for (i = 0; i < PSXINT_COUNT; i++) {
+               if (event_cycles[i] != event_cycles_o[i]) {
+                       byte = 0xfc;
+                       fwrite(&byte, 1, 1, f);
+                       fwrite(&i, 1, 1, f);
+                       fwrite(&event_cycles[i], 1, 4, f);
+                       event_cycles_o[i] = event_cycles[i];
+               }
+       }
+       // log last io
+       if (old_io_addr != last_io_addr) {
+               byte = 0xfd;
+               fwrite(&byte, 1, 1, f);
+               fwrite(&last_io_addr, 1, 4, f);
+               old_io_addr = last_io_addr;
+       }
+       io_data = memcheck_read(last_io_addr);
+       if (old_io_data != io_data) {
+               byte = 0xfe;
+               fwrite(&byte, 1, 1, f);
+               fwrite(&io_data, 1, 4, f);
+               old_io_data = io_data;
+       }
+       byte = 0xff;
+       fwrite(&byte, 1, 1, f);
+
+#if 0
+       if (psxRegs.cycle == 190230) {
+               dump_mem("/mnt/ntz/dev/pnd/tmp/psxram_i.dump", psxM, 0x200000);
+               dump_mem("/mnt/ntz/dev/pnd/tmp/psxregs_i.dump", psxH, 0x10000);
+               printf("dumped\n");
+               exit(1);
+       }
+#endif
+}
+
+static const char *regnames[offsetof(psxRegisters, intCycle) / 4] = {
+       "r0",  "r1",  "r2",  "r3",  "r4",  "r5",  "r6",  "r7",
+       "r8",  "r9",  "r10", "r11", "r12", "r13", "r14", "r15",
+       "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
+       "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
+       "lo",  "hi",
+       "C0_0",  "C0_1",  "C0_2",  "C0_3",  "C0_4",  "C0_5",  "C0_6",  "C0_7",
+       "C0_8",  "C0_9",  "C0_10", "C0_11", "C0_12", "C0_13", "C0_14", "C0_15",
+       "C0_16", "C0_17", "C0_18", "C0_19", "C0_20", "C0_21", "C0_22", "C0_23",
+       "C0_24", "C0_25", "C0_26", "C0_27", "C0_28", "C0_29", "C0_30", "C0_31",
+
+       "C2D0",  "C2D1",  "C2D2",  "C2D3",  "C2D4",  "C2D5",  "C2D6",  "C2D7",
+       "C2D8",  "C2D9",  "C2D10", "C2D11", "C2D12", "C2D13", "C2D14", "C2D15",
+       "C2D16", "C2D17", "C2D18", "C2D19", "C2D20", "C2D21", "C2D22", "C2D23",
+       "C2D24", "C2D25", "C2D26", "C2D27", "C2D28", "C2D29", "C2D30", "C2D31",
+
+       "C2C0",  "C2C1",  "C2C2",  "C2C3",  "C2C4",  "C2C5",  "C2C6",  "C2C7",
+       "C2C8",  "C2C9",  "C2C10", "C2C11", "C2C12", "C2C13", "C2C14", "C2C15",
+       "C2C16", "C2C17", "C2C18", "C2C19", "C2C20", "C2C21", "C2C22", "C2C23",
+       "C2C24", "C2C25", "C2C26", "C2C27", "C2C28", "C2C29", "C2C30", "C2C31",
+
+       "PC", "code", "cycle", "interrupt",
+};
+
+static struct {
+       int reg;
+       u32 val, val_expect;
+       u32 pc, cycle;
+} miss_log[64];
+static int miss_log_i;
+#define miss_log_len (sizeof(miss_log)/sizeof(miss_log[0]))
+#define miss_log_mask (miss_log_len-1)
+
+static void miss_log_add(int reg, u32 val, u32 val_expect, u32 pc, u32 cycle)
+{
+       miss_log[miss_log_i].reg = reg;
+       miss_log[miss_log_i].val = val;
+       miss_log[miss_log_i].val_expect = val_expect;
+       miss_log[miss_log_i].pc = pc;
+       miss_log[miss_log_i].cycle = cycle;
+       miss_log_i = (miss_log_i + 1) & miss_log_mask;
+}
+
+void breakme() {}
+
+void do_insn_cmp(void)
+{
+       static psxRegisters rregs;
+       static u32 mem_addr, mem_val;
+       u32 *allregs_p = (void *)&psxRegs;
+       u32 *allregs_e = (void *)&rregs;
+       static u32 ppc, failcount;
+       int i, ret, bad = 0, which_event = -1;
+       u32 ev_cycles = 0;
+       u8 code;
+
+       if (f == NULL)
+               f = fopen("tracelog", "rb");
+
+       while (1) {
+               if ((ret = fread(&code, 1, 1, f)) <= 0)
+                       break;
+               if (ret <= 0)
+                       break;
+               if (code == 0xff)
+                       break;
+               switch (code) {
+               case 0xfc:
+                       which_event = 0;
+                       fread(&which_event, 1, 1, f);
+                       fread(&ev_cycles, 1, 4, f);
+                       continue;
+               case 0xfd:
+                       fread(&mem_addr, 1, 4, f);
+                       continue;
+               case 0xfe:
+                       fread(&mem_val, 1, 4, f);
+                       continue;
+               }
+               fread(&allregs_e[code], 1, 4, f);
+       }
+
+       if (ret <= 0) {
+               printf("EOF?\n");
+               goto end;
+       }
+
+       psxRegs.code = rregs.code; // don't care
+       psxRegs.cycle = rregs.cycle;
+       psxRegs.CP0.r[9] = rregs.CP0.r[9]; // Count
+
+       //if (psxRegs.cycle == 166172) breakme();
+
+       if (memcmp(&psxRegs, &rregs, offsetof(psxRegisters, intCycle)) == 0 &&
+                       mem_val == memcheck_read(mem_addr)
+          ) {
+               failcount = 0;
+               goto ok;
+       }
+
+       for (i = 0; i < offsetof(psxRegisters, intCycle) / 4; i++) {
+               if (allregs_p[i] != allregs_e[i]) {
+                       miss_log_add(i, allregs_p[i], allregs_e[i], psxRegs.pc, psxRegs.cycle);
+                       bad++;
+               }
+       }
+
+       if (mem_val != memcheck_read(mem_addr)) {
+               printf("bad mem @%08x: %08x %08x\n", mem_addr, memcheck_read(mem_addr), mem_val);
+               goto end;
+       }
+
+       if (which_event >= 0 && event_cycles[which_event] != ev_cycles) {
+               printf("bad ev_cycles #%d: %08x %08x\n", which_event, event_cycles[which_event], ev_cycles);
+               goto end;
+       }
+
+       if (psxRegs.pc == rregs.pc && bad < 6 && failcount < 32) {
+               static int last_mcycle;
+               if (last_mcycle != psxRegs.cycle >> 20) {
+                       printf("%u\n", psxRegs.cycle);
+                       last_mcycle = psxRegs.cycle >> 20;
+               }
+               failcount++;
+               goto ok;
+       }
+
+end:
+       for (i = 0; i < miss_log_len; i++, miss_log_i = (miss_log_i + 1) & miss_log_mask)
+               printf("bad %5s: %08x %08x, pc=%08x, cycle %u\n",
+                       regnames[miss_log[miss_log_i].reg], miss_log[miss_log_i].val,
+                       miss_log[miss_log_i].val_expect, miss_log[miss_log_i].pc, miss_log[miss_log_i].cycle);
+       printf("-- %d\n", bad);
+       for (i = 0; i < 8; i++)
+               printf("r%d=%08x r%2d=%08x r%2d=%08x r%2d=%08x\n", i, allregs_p[i],
+                       i+8, allregs_p[i+8], i+16, allregs_p[i+16], i+24, allregs_p[i+24]);
+       printf("PC: %08x/%08x, cycle %u\n", psxRegs.pc, ppc, psxRegs.cycle);
+       dump_mem("/mnt/ntz/dev/pnd/tmp/psxram.dump", psxM, 0x200000);
+       dump_mem("/mnt/ntz/dev/pnd/tmp/psxregs.dump", psxH, 0x10000);
+       exit(1);
+ok:
+       psxRegs.cycle = rregs.cycle + 2; // sync timing
+       ppc = psxRegs.pc;
+}
+
+#endif