X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=Pico%2FdebugCPU.c;fp=Pico%2FdebugCPU.c;h=77ca4207b270efc9c761b5c550f0cd8d131a456b;hb=efcba75f8a730340df6c1b679a207723f98d1ee6;hp=0000000000000000000000000000000000000000;hpb=6a13ef3f56a80ac698d463f5d00235ea2a090f52;p=picodrive.git

diff --git a/Pico/debugCPU.c b/Pico/debugCPU.c
new file mode 100644
index 0000000..77ca420
--- /dev/null
+++ b/Pico/debugCPU.c
@@ -0,0 +1,221 @@
+#include "pico_int.h"
+
+typedef unsigned char  u8;
+
+static unsigned int pppc, ops=0;
+extern unsigned int lastread_a, lastread_d[16], lastwrite_cyc_d[16], lastwrite_mus_d[16];
+extern int lrp_cyc, lrp_mus, lwp_cyc, lwp_mus;
+unsigned int old_regs[16], old_sr, ppop, have_illegal = 0;
+int dbg_irq_level = 0, dbg_irq_level_sub = 0;
+
+#undef dprintf
+#define dprintf(f,...) printf("%05i:%03i: " f "\n",Pico.m.frame_count,Pico.m.scanline,##__VA_ARGS__)
+
+#if defined(EMU_C68K)
+static struct Cyclone *currentC68k = NULL;
+#define other_set_sub(s)   currentC68k=(s)?&PicoCpuCS68k:&PicoCpuCM68k;
+#define other_get_sr()     CycloneGetSr(currentC68k)
+#define other_dar(i)       currentC68k->d[i]
+#define other_osp          currentC68k->osp
+#define other_get_irq()    currentC68k->irq
+#define other_set_irq(i)   currentC68k->irq=i
+#define other_is_stopped()  (currentC68k->state_flags&1)
+#define other_is_tracing() ((currentC68k->state_flags&2)?1:0)
+#elif defined(EMU_F68K)
+#define other_set_sub(s)   g_m68kcontext=(s)?&PicoCpuFS68k:&PicoCpuFM68k;
+#define other_get_sr()     g_m68kcontext->sr
+#define other_dar(i)       ((unsigned int*)g_m68kcontext->dreg)[i]
+#define other_osp          g_m68kcontext->asp
+#define other_get_irq()    g_m68kcontext->interrupts[0]
+#define other_set_irq(irq) g_m68kcontext->interrupts[0]=irq
+#define other_is_stopped() ((g_m68kcontext->execinfo&FM68K_HALTED)?1:0)
+#define other_is_tracing() ((g_m68kcontext->execinfo&FM68K_EMULATE_TRACE)?1:0)
+#else
+#error other core missing, don't compile this file
+#endif
+
+static int otherRun(void)
+{
+#if defined(EMU_C68K)
+  currentC68k->cycles=1;
+  CycloneRun(currentC68k);
+  return 1-currentC68k->cycles;
+#elif defined(EMU_F68K)
+  return fm68k_emulate(1, 0);
+#endif
+}
+
+//static
+void dumpPCandExit(int is_sub)
+{
+  char buff[128];
+  int i;
+
+  m68k_disassemble(buff, pppc, M68K_CPU_TYPE_68000);
+  dprintf("PC: %06x: %04x: %s", pppc, ppop, buff);
+  dprintf("                    this | prev");
+  for(i=0; i < 8; i++)
+    dprintf("d%i=%08x, a%i=%08x | d%i=%08x, a%i=%08x", i, other_dar(i), i, other_dar(i+8), i, old_regs[i], i, old_regs[i+8]);
+  dprintf("SR:                 %04x | %04x (??s? 0iii 000x nzvc)", other_get_sr(), old_sr);
+  dprintf("last_read: %08x @ %06x", lastread_d[--lrp_cyc&15], lastread_a);
+  dprintf("ops done: %i, is_sub: %i", ops, is_sub);
+  exit(1);
+}
+
+int CM_compareRun(int cyc, int is_sub)
+{
+  char *str;
+  int cyc_done=0, cyc_other, cyc_musashi, *irq_level, err=0;
+  unsigned int i, pc, mu_sr;
+
+  m68ki_cpu_p=is_sub?&PicoCpuMS68k:&PicoCpuMM68k;
+  other_set_sub(is_sub);
+  lrp_cyc = lrp_mus = 0;
+
+  while (cyc_done < cyc)
+  {
+    if (have_illegal && m68k_read_disassembler_16(m68ki_cpu.pc) != 0x4e73) // not rte
+    {
+      have_illegal = 0;
+      m68ki_cpu.pc += 2;
+#ifdef EMU_C68K
+      currentC68k->pc=currentC68k->checkpc(currentC68k->pc + 2);
+#endif
+    }
+    // hacks for test_misc2
+    if (m68ki_cpu.pc == 0x0002e0 && m68k_read_disassembler_16(m68ki_cpu.pc) == 0x4e73)
+    {
+      // get out of "priviledge violation" loop
+      have_illegal = 1;
+      //m68ki_cpu.s_flag = SFLAG_SET;
+      //currentC68k->srh|=0x20;
+    }
+
+    pppc = is_sub ? SekPcS68k : SekPc;
+    ppop = m68k_read_disassembler_16(pppc);
+    memcpy(old_regs, &other_dar(0), 4*16);
+    old_sr = other_get_sr();
+
+#if 0
+    {
+      char buff[128];
+      dprintf("---");
+      m68k_disassemble(buff, pppc, M68K_CPU_TYPE_68000);
+      dprintf("PC: %06x: %04x: %s", pppc, ppop, buff);
+      //dprintf("A7: %08x", currentC68k->a[7]);
+    }
+#endif
+
+    irq_level = is_sub ? &dbg_irq_level_sub : &dbg_irq_level;
+    if (*irq_level)
+    {
+      other_set_irq(*irq_level);
+      m68k_set_irq(*irq_level);
+      *irq_level=0;
+    }
+
+    cyc_other=otherRun();
+    // Musashi takes irq even if it hasn't got cycles left, let othercpu do it too
+    if (other_get_irq() && other_get_irq() > ((other_get_sr()>>8)&7))
+      cyc_other+=otherRun();
+    cyc_musashi=m68k_execute(1);
+
+    if (cyc_other != cyc_musashi) {
+      dprintf("cycles: %i vs %i", cyc_other, cyc_musashi);
+      err=1;
+    }
+
+    if (lrp_cyc != lrp_mus) {
+      dprintf("lrp: %i vs %i", lrp_cyc&15, lrp_mus&15);
+      err=1;
+    }
+
+    if (lwp_cyc != lwp_mus) {
+      dprintf("lwp: %i vs %i", lwp_cyc&15, lwp_mus&15);
+      err=1;
+    }
+
+    for (i=0; i < 16; i++) {
+      if (lastwrite_cyc_d[i] != lastwrite_mus_d[i]) {
+        dprintf("lastwrite: [%i]= %08x vs %08x", i, lastwrite_cyc_d[i], lastwrite_mus_d[i]);
+        err=1;
+        break;
+      }
+    }
+
+    // compare PC
+    pc = is_sub ? SekPcS68k : SekPc;
+    m68ki_cpu.pc&=~1;
+    if (pc != m68ki_cpu.pc) {
+      dprintf("PC: %06x vs %06x", pc, m68ki_cpu.pc);
+      err=1;
+    }
+
+#if 0
+    if( SekPc > Pico.romsize || SekPc < 0x200 ) {
+      dprintf("PC out of bounds: %06x", SekPc);
+      err=1;
+    }
+#endif
+
+    // compare regs
+    for (i=0; i < 16; i++) {
+      if (other_dar(i) != m68ki_cpu.dar[i]) {
+        str = (i < 8) ? "d" : "a";
+        dprintf("reg: %s%i: %08x vs %08x", str, i&7, other_dar(i), m68ki_cpu.dar[i]);
+        err=1;
+      }
+    }
+
+    // SR
+    if (other_get_sr() != (mu_sr = m68k_get_reg(NULL, M68K_REG_SR))) {
+      dprintf("SR: %04x vs %04x (??s? 0iii 000x nzvc)", other_get_sr(), mu_sr);
+      err=1;
+    }
+
+    // IRQl
+    if (other_get_irq() != (m68ki_cpu.int_level>>8)) {
+      dprintf("IRQ: %i vs %i", other_get_irq(), (m68ki_cpu.int_level>>8));
+      err=1;
+    }
+
+    // OSP/USP
+    if (other_osp != m68ki_cpu.sp[((mu_sr>>11)&4)^4]) {
+      dprintf("OSP: %06x vs %06x", other_osp, m68ki_cpu.sp[((mu_sr>>11)&4)^4]);
+      err=1;
+    }
+
+    // stopped
+    if ((other_is_stopped() && !m68ki_cpu.stopped) || (!other_is_stopped() && m68ki_cpu.stopped)) {
+      dprintf("stopped: %i vs %i", other_is_stopped(), m68ki_cpu.stopped);
+      err=1;
+    }
+
+    // tracing
+    if((other_is_tracing() && !m68ki_tracing) || (!other_is_tracing() && m68ki_tracing)) {
+      dprintf("tracing: %i vs %i", other_is_tracing(), m68ki_tracing);
+      err=1;
+    }
+
+    if(err) dumpPCandExit(is_sub);
+
+#if 0
+    if (m68ki_cpu.dar[15] < 0x00ff0000 || m68ki_cpu.dar[15] >= 0x01000000)
+    {
+      other_dar(15) = m68ki_cpu.dar[15] = 0xff8000;
+    }
+#endif
+#if 0
+    m68k_set_reg(M68K_REG_SR, ((mu_sr-1)&~0x2000)|(mu_sr&0x2000)); // broken
+    CycloneSetSr(currentC68k, ((mu_sr-1)&~0x2000)|(mu_sr&0x2000));
+    currentC68k->stopped = m68ki_cpu.stopped = 0;
+    if(SekPc > 0x400 && (currentC68k->a[7] < 0xff0000 || currentC68k->a[7] > 0xffffff))
+    currentC68k->a[7] = m68ki_cpu.dar[15] = 0xff8000;
+#endif
+
+    cyc_done += cyc_other;
+    ops++;
+  }
+
+  return cyc_done;
+}