X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2Fsek.c;h=517652878e74b1f55aac7b3d0c4f3cd47a6de7fc;hb=9db6a54485501b56b0f2f5db4d093c38fe495bda;hp=f085f6129a1896f74cc6224e22ea14a67e4e6569;hpb=1cfc5cc4ce06642b9bc45ca3b9d32793718e9455;p=picodrive.git

diff --git a/pico/sek.c b/pico/sek.c
index f085f61..5176528 100644
--- a/pico/sek.c
+++ b/pico/sek.c
@@ -1,18 +1,18 @@
-// This is part of Pico Library
-
-// (c) Copyright 2004 Dave, All rights reserved.
-// (c) Copyright 2006 notaz, All rights reserved.
-// Free for non-commercial use.
-
-// For commercial use, separate licencing terms must be obtained.
-
+/*
+ * PicoDrive
+ * (c) Copyright Dave, 2004
+ * (C) notaz, 2006-2009
+ *
+ * This work is licensed under the terms of MAME license.
+ * See COPYING file in the top-level directory.
+ */
 
 #include "pico_int.h"
+#include "memory.h"
 
 
-int SekCycleCnt=0; // cycles done in this frame
-int SekCycleAim=0; // cycle aim
-unsigned int SekCycleCntT=0;
+unsigned int SekCycleCnt;
+unsigned int SekCycleAim;
 
 
 /* context */
@@ -49,16 +49,19 @@ static void SekResetAck(void)
 
 static int SekUnrecognizedOpcode()
 {
-  unsigned int pc, op;
+  unsigned int pc;
   pc = SekPc;
-  op = PicoCpuCM68k.read16(pc);
-  elprintf(EL_ANOMALY, "Unrecognized Opcode %04x @ %06x", op, pc);
-  // see if we are not executing trash
-  if (pc < 0x200 || (pc > Pico.romsize+4 && (pc&0xe00000)!=0xe00000)) {
+  elprintf(EL_ANOMALY, "Unrecognized Opcode @ %06x", pc);
+  // see if we are still in a mapped region
+  pc &= 0x00ffffff;
+  if (map_flag_set(m68k_read16_map[pc >> M68K_MEM_SHIFT])) {
+    elprintf(EL_STATUS|EL_ANOMALY, "m68k crash @%06x", pc);
     PicoCpuCM68k.cycles = 0;
     PicoCpuCM68k.state_flags |= 1;
     return 1;
   }
+  // happened once - may happen again
+  SekFinishIdleDet();
 #ifdef EMU_M68K // debugging cyclone
   {
     extern int have_illegal;
@@ -89,8 +92,14 @@ static int SekTasCallback(void)
 #ifdef EMU_F68K
 static void SekIntAckF68K(unsigned level)
 {
-  if     (level == 4) { Pico.video.pending_ints  =  0;    elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCycleCnt); }
-  else if(level == 6) { Pico.video.pending_ints &= ~0x20; elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCycleCnt); }
+  if     (level == 4) {
+    Pico.video.pending_ints = 0;
+    elprintf(EL_INTS, "hack: @ %06x [%i]", SekPc, SekCyclesDone());
+  }
+  else if(level == 6) {
+    Pico.video.pending_ints &= ~0x20;
+    elprintf(EL_INTS, "vack: @ %06x [%i]", SekPc, SekCyclesDone());
+  }
   PicoCpuFM68k.interrupts[0] = 0;
 }
 #endif
@@ -138,13 +147,7 @@ PICO_INTERNAL int SekReset(void)
   if (Pico.rom==NULL) return 1;
 
 #ifdef EMU_C68K
-  PicoCpuCM68k.state_flags=0;
-  PicoCpuCM68k.osp=0;
-  PicoCpuCM68k.srh =0x27; // Supervisor mode
-  PicoCpuCM68k.irq=0;
-  PicoCpuCM68k.a[7]=PicoCpuCM68k.read32(0); // Stack Pointer
-  PicoCpuCM68k.membase=0;
-  PicoCpuCM68k.pc=PicoCpuCM68k.checkpc(PicoCpuCM68k.read32(4)); // Program Counter
+  CycloneReset(&PicoCpuCM68k);
 #endif
 #ifdef EMU_M68K
   m68k_set_context(&PicoCpuMM68k); // if we ever reset m68k, we always need it's context to be set
@@ -175,7 +178,7 @@ void SekStepM68k(void)
 #elif defined(EMU_M68K)
   SekCycleCnt+=m68k_execute(1);
 #elif defined(EMU_F68K)
-  SekCycleCnt+=fm68k_emulate(1, 0, 0);
+  SekCycleCnt+=fm68k_emulate(1, 0);
 #endif
 }
 
@@ -189,15 +192,94 @@ PICO_INTERNAL void SekSetRealTAS(int use_real)
 #endif
 }
 
+// Pack the cpu into a common format:
+// XXX: rename
+PICO_INTERNAL void SekPackCpu(unsigned char *cpu, int is_sub)
+{
+  unsigned int pc=0;
+
+#if defined(EMU_C68K)
+  struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;
+  memcpy(cpu,context->d,0x40);
+  pc=context->pc-context->membase;
+  *(unsigned int *)(cpu+0x44)=CycloneGetSr(context);
+  *(unsigned int *)(cpu+0x48)=context->osp;
+  cpu[0x4c] = context->irq;
+  cpu[0x4d] = context->state_flags & 1;
+#elif defined(EMU_M68K)
+  void *oldcontext = m68ki_cpu_p;
+  m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);
+  memcpy(cpu,m68ki_cpu_p->dar,0x40);
+  pc=m68ki_cpu_p->pc;
+  *(unsigned int  *)(cpu+0x44)=m68k_get_reg(NULL, M68K_REG_SR);
+  *(unsigned int  *)(cpu+0x48)=m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET];
+  cpu[0x4c] = CPU_INT_LEVEL>>8;
+  cpu[0x4d] = CPU_STOPPED;
+  m68k_set_context(oldcontext);
+#elif defined(EMU_F68K)
+  M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;
+  memcpy(cpu,context->dreg,0x40);
+  pc=context->pc;
+  *(unsigned int  *)(cpu+0x44)=context->sr;
+  *(unsigned int  *)(cpu+0x48)=context->asp;
+  cpu[0x4c] = context->interrupts[0];
+  cpu[0x4d] = (context->execinfo & FM68K_HALTED) ? 1 : 0;
+#endif
+
+  *(unsigned int *)(cpu+0x40) = pc;
+  *(unsigned int *)(cpu+0x50) =
+    is_sub ? SekCycleCntS68k : SekCycleCnt;
+}
+
+PICO_INTERNAL void SekUnpackCpu(const unsigned char *cpu, int is_sub)
+{
+#if defined(EMU_C68K)
+  struct Cyclone *context = is_sub ? &PicoCpuCS68k : &PicoCpuCM68k;
+  CycloneSetSr(context, *(unsigned int *)(cpu+0x44));
+  context->osp=*(unsigned int *)(cpu+0x48);
+  memcpy(context->d,cpu,0x40);
+  context->membase = 0;
+  context->pc = *(unsigned int *)(cpu+0x40);
+  CycloneUnpack(context, NULL); // rebase PC
+  context->irq = cpu[0x4c];
+  context->state_flags = 0;
+  if (cpu[0x4d])
+    context->state_flags |= 1;
+#elif defined(EMU_M68K)
+  void *oldcontext = m68ki_cpu_p;
+  m68k_set_context(is_sub ? &PicoCpuMS68k : &PicoCpuMM68k);
+  m68k_set_reg(M68K_REG_SR, *(unsigned int *)(cpu+0x44));
+  memcpy(m68ki_cpu_p->dar,cpu,0x40);
+  m68ki_cpu_p->pc=*(unsigned int *)(cpu+0x40);
+  m68ki_cpu_p->sp[m68ki_cpu_p->s_flag^SFLAG_SET]=*(unsigned int *)(cpu+0x48);
+  CPU_INT_LEVEL = cpu[0x4c] << 8;
+  CPU_STOPPED = cpu[0x4d];
+  m68k_set_context(oldcontext);
+#elif defined(EMU_F68K)
+  M68K_CONTEXT *context = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;
+  memcpy(context->dreg,cpu,0x40);
+  context->pc =*(unsigned int *)(cpu+0x40);
+  context->sr =*(unsigned int *)(cpu+0x44);
+  context->asp=*(unsigned int *)(cpu+0x48);
+  context->interrupts[0] = cpu[0x4c];
+  context->execinfo &= ~FM68K_HALTED;
+  if (cpu[0x4d]&1) context->execinfo |= FM68K_HALTED;
+#endif
+  if (is_sub)
+    SekCycleCntS68k = *(unsigned int *)(cpu+0x50);
+  else
+    SekCycleCnt = *(unsigned int *)(cpu+0x50);
+}
+
 
 /* idle loop detection, not to be used in CD mode */
 #ifdef EMU_C68K
-#include "cpu/Cyclone/tools/idle.h"
+#include "cpu/cyclone/tools/idle.h"
 #endif
 
-static int *idledet_addrs = NULL;
+static unsigned short **idledet_ptrs = NULL;
 static int idledet_count = 0, idledet_bads = 0;
-int idledet_start_frame = 0;
+static int idledet_start_frame = 0;
 
 #if 0
 #define IDLE_STATS 1
@@ -220,13 +302,14 @@ void SekRegisterIdleHit(unsigned int pc)
 
 void SekInitIdleDet(void)
 {
-  void *tmp = realloc(idledet_addrs, 0x200*4);
+  unsigned short **tmp;
+  tmp = realloc(idledet_ptrs, 0x200 * sizeof(tmp[0]));
   if (tmp == NULL) {
-    free(idledet_addrs);
-    idledet_addrs = NULL;
+    free(idledet_ptrs);
+    idledet_ptrs = NULL;
   }
   else
-    idledet_addrs = tmp;
+    idledet_ptrs = tmp;
   idledet_count = idledet_bads = 0;
   idledet_start_frame = Pico.m.frame_count + 360;
 #ifdef IDLE_STATS
@@ -237,10 +320,15 @@ void SekInitIdleDet(void)
   CycloneInitIdle();
 #endif
 #ifdef EMU_F68K
-  fm68k_emulate(0, 0, 1);
+  fm68k_emulate(0, 1);
 #endif
 }
 
+int SekIsIdleReady(void)
+{
+	return (Pico.m.frame_count >= idledet_start_frame);
+}
+
 int SekIsIdleCode(unsigned short *dst, int bytes)
 {
   // printf("SekIsIdleCode %04x %i\n", *dst, bytes);
@@ -251,11 +339,16 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
         return 1;
       break;
     case 4:
-      if (  (*dst & 0xfff8) == 0x4a10 || // tst.b ($aX)      // there should be no need to wait
-            (*dst & 0xfff8) == 0x4a28 || // tst.b ($xxxx,a0) // for byte change anywhere
-            (*dst & 0xff3f) == 0x4a38 || // tst.x ($xxxx.w); tas ($xxxx.w)
-            (*dst & 0xc1ff) == 0x0038 || // move.x ($xxxx.w), dX
-            (*dst & 0xf13f) == 0xb038)   // cmp.x ($xxxx.w), dX
+      if ( (*dst & 0xff3f) == 0x4a38 || // tst.x ($xxxx.w); tas ($xxxx.w)
+           (*dst & 0xc1ff) == 0x0038 || // move.x ($xxxx.w), dX
+           (*dst & 0xf13f) == 0xb038)   // cmp.x ($xxxx.w), dX
+        return 1;
+      if (PicoAHW & (PAHW_MCD|PAHW_32X))
+        break;
+      // with no addons, there should be no need to wait
+      // for byte change anywhere
+      if ( (*dst & 0xfff8) == 0x4a10 || // tst.b ($aX)
+           (*dst & 0xfff8) == 0x4a28)   // tst.b ($xxxx,a0)
         return 1;
       break;
     case 6:
@@ -277,7 +370,9 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
         return 1;
       break;
     case 12:
-       if ((*dst & 0xf1f8) == 0x3010 && // move.w (aX), dX
+      if (PicoAHW & (PAHW_MCD|PAHW_32X))
+        break;
+      if ( (*dst & 0xf1f8) == 0x3010 && // move.w (aX), dX
             (dst[1]&0xf100) == 0x0000 && // arithmetic
             (dst[3]&0xf100) == 0x0000)   // arithmetic
         return 1;
@@ -290,6 +385,9 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
 int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)
 {
   int is_main68k = 1;
+  u16 *target;
+  uptr v;
+
 #if   defined(EMU_C68K)
   struct Cyclone *cyc = ctx;
   is_main68k = cyc == &PicoCpuCM68k;
@@ -298,37 +396,46 @@ int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)
   is_main68k = ctx == &PicoCpuFM68k;
 #endif
   pc &= ~0xff000000;
+  if (!(newop&0x200))
   elprintf(EL_IDLE, "idle: patch %06x %04x %04x %c %c #%i", pc, oldop, newop,
     (newop&0x200)?'n':'y', is_main68k?'m':'s', idledet_count);
 
-  if (pc > Pico.romsize && !(PicoAHW & PAHW_SVP)) {
-    if (++idledet_bads > 128) return 2; // remove detector
+  // XXX: probably shouldn't patch RAM too
+  v = m68k_read16_map[pc >> M68K_MEM_SHIFT];
+  if (!(v & 0x80000000))
+    target = (u16 *)((v << 1) + pc);
+  else {
+    if (++idledet_bads > 128)
+      return 2; // remove detector
     return 1; // don't patch
   }
 
   if (idledet_count >= 0x200 && (idledet_count & 0x1ff) == 0) {
-    void *tmp = realloc(idledet_addrs, (idledet_count+0x200)*4);
-    if (tmp == NULL) return 1;
-    idledet_addrs = tmp;
+    unsigned short **tmp;
+    tmp = realloc(idledet_ptrs, (idledet_count+0x200) * sizeof(tmp[0]));
+    if (tmp == NULL)
+      return 1;
+    idledet_ptrs = tmp;
   }
 
-  if (pc < Pico.romsize)
-    idledet_addrs[idledet_count++] = pc;
+  idledet_ptrs[idledet_count++] = target;
 
   return 0;
 }
 
 void SekFinishIdleDet(void)
 {
+  if (idledet_count < 0)
+    return;
 #ifdef EMU_C68K
   CycloneFinishIdle();
 #endif
 #ifdef EMU_F68K
-  fm68k_emulate(0, 0, 2);
+  fm68k_emulate(0, 2);
 #endif
   while (idledet_count > 0)
   {
-    unsigned short *op = (unsigned short *)&Pico.rom[idledet_addrs[--idledet_count]];
+    unsigned short *op = idledet_ptrs[--idledet_count];
     if      ((*op & 0xfd00) == 0x7100)
       *op &= 0xff, *op |= 0x6600;
     else if ((*op & 0xfd00) == 0x7500)
@@ -338,9 +445,127 @@ void SekFinishIdleDet(void)
     else
       elprintf(EL_STATUS|EL_IDLE, "idle: don't know how to restore %04x", *op);
   }
+  idledet_count = -1;
 }
 
 
+#if defined(CPU_CMP_R) || defined(CPU_CMP_W)
+#include "debug.h"
+
+struct ref_68k {
+  u32 dar[16];
+  u32 pc;
+  u32 sr;
+  u32 cycles;
+  u32 pc_prev;
+};
+struct ref_68k ref_68ks[2];
+static int current_68k;
+
+void SekTrace(int is_s68k)
+{
+  struct ref_68k *x68k = &ref_68ks[is_s68k];
+  u32 pc = is_s68k ? SekPcS68k : SekPc;
+  u32 sr = is_s68k ? SekSrS68k : SekSr;
+  u32 cycles = is_s68k ? SekCycleCntS68k : SekCycleCnt;
+  u32 r;
+  u8 cmd;
+#ifdef CPU_CMP_W
+  int i;
+
+  if (is_s68k != current_68k) {
+    current_68k = is_s68k;
+    cmd = CTL_68K_SLAVE | current_68k;
+    tl_write(&cmd, sizeof(cmd));
+  }
+  if (pc != x68k->pc) {
+    x68k->pc = pc;
+    tl_write_uint(CTL_68K_PC, x68k->pc);
+  }
+  if (sr != x68k->sr) {
+    x68k->sr = sr;
+    tl_write_uint(CTL_68K_SR, x68k->sr);
+  }
+  for (i = 0; i < 16; i++) {
+    r = is_s68k ? SekDarS68k(i) : SekDar(i);
+    if (r != x68k->dar[i]) {
+      x68k->dar[i] = r;
+      tl_write_uint(CTL_68K_R + i, r);
+    }
+  }
+  tl_write_uint(CTL_68K_CYCLES, cycles);
+#else
+  int i, bad = 0;
+
+  while (1)
+  {
+    int ret = tl_read(&cmd, sizeof(cmd));
+    if (ret == 0) {
+      elprintf(EL_STATUS, "EOF");
+      exit(1);
+    }
+    switch (cmd) {
+    case CTL_68K_SLAVE:
+    case CTL_68K_SLAVE + 1:
+      current_68k = cmd & 1;
+      break;
+    case CTL_68K_PC:
+      tl_read_uint(&x68k->pc);
+      break;
+    case CTL_68K_SR:
+      tl_read_uint(&x68k->sr);
+      break;
+    case CTL_68K_CYCLES:
+      tl_read_uint(&x68k->cycles);
+      goto breakloop;
+    default:
+      if (CTL_68K_R <= cmd && cmd < CTL_68K_R + 0x10)
+        tl_read_uint(&x68k->dar[cmd - CTL_68K_R]);
+      else
+        elprintf(EL_STATUS, "invalid cmd: %02x", cmd);
+    }
+  }
+
+breakloop:
+  if (is_s68k != current_68k) {
+		printf("bad 68k: %d %d\n", is_s68k, current_68k);
+    bad = 1;
+  }
+  if (cycles != x68k->cycles) {
+		printf("bad cycles: %u %u\n", cycles, x68k->cycles);
+    bad = 1;
+  }
+  if ((pc ^ x68k->pc) & 0xffffff) {
+		printf("bad PC: %08x %08x\n", pc, x68k->pc);
+    bad = 1;
+  }
+  if (sr != x68k->sr) {
+		printf("bad SR:  %03x %03x\n", sr, x68k->sr);
+    bad = 1;
+  }
+  for (i = 0; i < 16; i++) {
+    r = is_s68k ? SekDarS68k(i) : SekDar(i);
+    if (r != x68k->dar[i]) {
+		  printf("bad %c%d: %08x %08x\n", i < 8 ? 'D' : 'A', i & 7,
+        r, x68k->dar[i]);
+      bad = 1;
+    }
+  }
+  if (bad) {
+    for (i = 0; i < 8; i++)
+			printf("D%d: %08x  A%d: %08x\n", i, x68k->dar[i],
+        i, x68k->dar[i + 8]);
+		printf("PC: %08x, %08x\n", x68k->pc, x68k->pc_prev);
+		printf("SR: %04x\n", x68k->sr);
+
+    PDebugDumpMem();
+    exit(1);
+  }
+  x68k->pc_prev = x68k->pc;
+#endif
+}
+#endif // CPU_CMP_*
+
 #if defined(EMU_M68K) && M68K_INSTRUCTION_HOOK == OPT_SPECIFY_HANDLER
 static unsigned char op_flags[0x400000/2] = { 0, };
 static int atexit_set = 0;
@@ -368,3 +593,5 @@ void instruction_hook(void)
     op_flags[REG_PC/2] = 1;
 }
 #endif
+
+// vim:shiftwidth=2:ts=2:expandtab