famec: eliminate global context ptr

[picodrive.git] / pico / debugCPU.c

/*\r
 * debug stuff\r
 * (C) notaz, 2006-2008\r
 *\r
 * This work is licensed under the terms of MAME license.\r
 * See COPYING file in the top-level directory.\r
 */\r
\r
#include "pico_int.h"\r
\r
typedef unsigned char  u8;\r
\r
static unsigned int pppc, ops=0;\r
extern unsigned int lastread_a, lastread_d[16], lastwrite_cyc_d[16], lastwrite_mus_d[16];\r
extern int lrp_cyc, lrp_mus, lwp_cyc, lwp_mus;\r
unsigned int old_regs[16], old_sr, ppop, have_illegal = 0;\r
int dbg_irq_level = 0, dbg_irq_level_sub = 0;\r
\r
#undef dprintf\r
#define dprintf(f,...) printf("%05i:%03i: " f "\n",Pico.m.frame_count,Pico.m.scanline,##__VA_ARGS__)\r
\r
#if defined(EMU_C68K)\r
static struct Cyclone *currentC68k = NULL;\r
#define other_set_sub(s)   currentC68k=(s)?&PicoCpuCS68k:&PicoCpuCM68k;\r
#define other_get_sr()     CycloneGetSr(currentC68k)\r
#define other_dar(i)       currentC68k->d[i]\r
#define other_osp          currentC68k->osp\r
#define other_get_irq()    currentC68k->irq\r
#define other_set_irq(i)   currentC68k->irq=i\r
#define other_is_stopped()  (currentC68k->state_flags&1)\r
#define other_is_tracing() ((currentC68k->state_flags&2)?1:0)\r
#elif defined(EMU_F68K)\r
static struct M68K_CONTEXT *g_m68kcontext;\r
#define other_set_sub(s)   g_m68kcontext=(s)?&PicoCpuFS68k:&PicoCpuFM68k;\r
#define other_get_sr()     g_m68kcontext->sr\r
#define other_dar(i)       ((unsigned int*)g_m68kcontext->dreg)[i]\r
#define other_osp          g_m68kcontext->asp\r
#define other_get_irq()    g_m68kcontext->interrupts[0]\r
#define other_set_irq(irq) g_m68kcontext->interrupts[0]=irq\r
#define other_is_stopped() ((g_m68kcontext->execinfo&FM68K_HALTED)?1:0)\r
#define other_is_tracing() ((g_m68kcontext->execinfo&FM68K_EMULATE_TRACE)?1:0)\r
#else\r
#error other core missing, don't compile this file\r
#endif\r
\r
static int otherRun(void)\r
{\r
#if defined(EMU_C68K)\r
  currentC68k->cycles=1;\r
  CycloneRun(currentC68k);\r
  return 1-currentC68k->cycles;\r
#elif defined(EMU_F68K)\r
  return fm68k_emulate(g_m68kcontext, 1, 0);\r
#endif\r
}\r
\r
//static\r
void dumpPCandExit(int is_sub)\r
{\r
  char buff[128];\r
  int i;\r
\r
  m68k_disassemble(buff, pppc, M68K_CPU_TYPE_68000);\r
  dprintf("PC: %06x: %04x: %s", pppc, ppop, buff);\r
  dprintf("                    this | prev");\r
  for(i=0; i < 8; i++)\r
    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]);\r
  dprintf("SR:                 %04x | %04x (??s? 0iii 000x nzvc)", other_get_sr(), old_sr);\r
  dprintf("last_read: %08x @ %06x", lastread_d[--lrp_cyc&15], lastread_a);\r
  dprintf("ops done: %i, is_sub: %i", ops, is_sub);\r
  exit(1);\r
}\r
\r
int CM_compareRun(int cyc, int is_sub)\r
{\r
  char *str;\r
  int cyc_done=0, cyc_other, cyc_musashi, *irq_level, err=0;\r
  unsigned int i, pc, mu_sr;\r
\r
  m68ki_cpu_p=is_sub?&PicoCpuMS68k:&PicoCpuMM68k;\r
  other_set_sub(is_sub);\r
  lrp_cyc = lrp_mus = 0;\r
\r
  while (cyc_done < cyc)\r
  {\r
    if (have_illegal && m68k_read_disassembler_16(m68ki_cpu.pc) != 0x4e73) // not rte\r
    {\r
      have_illegal = 0;\r
      m68ki_cpu.pc += 2;\r
#ifdef EMU_C68K\r
      currentC68k->pc=currentC68k->checkpc(currentC68k->pc + 2);\r
#endif\r
    }\r
    // hacks for test_misc2\r
    if (m68ki_cpu.pc == 0x0002e0 && m68k_read_disassembler_16(m68ki_cpu.pc) == 0x4e73)\r
    {\r
      // get out of "priviledge violation" loop\r
      have_illegal = 1;\r
      //m68ki_cpu.s_flag = SFLAG_SET;\r
      //currentC68k->srh|=0x20;\r
    }\r
\r
    pppc = is_sub ? SekPcS68k : SekPc;\r
    ppop = m68k_read_disassembler_16(pppc);\r
    memcpy(old_regs, &other_dar(0), 4*16);\r
    old_sr = other_get_sr();\r
\r
#if 0\r
    {\r
      char buff[128];\r
      dprintf("---");\r
      m68k_disassemble(buff, pppc, M68K_CPU_TYPE_68000);\r
      dprintf("PC: %06x: %04x: %s", pppc, ppop, buff);\r
      //dprintf("A7: %08x", currentC68k->a[7]);\r
    }\r
#endif\r
\r
    irq_level = is_sub ? &dbg_irq_level_sub : &dbg_irq_level;\r
    if (*irq_level)\r
    {\r
      other_set_irq(*irq_level);\r
      m68k_set_irq(*irq_level);\r
      *irq_level=0;\r
    }\r
\r
    cyc_other=otherRun();\r
    // Musashi takes irq even if it hasn't got cycles left, let othercpu do it too\r
    if (other_get_irq() && other_get_irq() > ((other_get_sr()>>8)&7))\r
      cyc_other+=otherRun();\r
    cyc_musashi=m68k_execute(1);\r
\r
    if (cyc_other != cyc_musashi) {\r
      dprintf("cycles: %i vs %i", cyc_other, cyc_musashi);\r
      err=1;\r
    }\r
\r
    if (lrp_cyc != lrp_mus) {\r
      dprintf("lrp: %i vs %i", lrp_cyc&15, lrp_mus&15);\r
      err=1;\r
    }\r
\r
    if (lwp_cyc != lwp_mus) {\r
      dprintf("lwp: %i vs %i", lwp_cyc&15, lwp_mus&15);\r
      err=1;\r
    }\r
\r
    for (i=0; i < 16; i++) {\r
      if (lastwrite_cyc_d[i] != lastwrite_mus_d[i]) {\r
        dprintf("lastwrite: [%i]= %08x vs %08x", i, lastwrite_cyc_d[i], lastwrite_mus_d[i]);\r
        err=1;\r
        break;\r
      }\r
    }\r
\r
    // compare PC\r
    pc = is_sub ? SekPcS68k : SekPc;\r
    m68ki_cpu.pc&=~1;\r
    if (pc != m68ki_cpu.pc) {\r
      dprintf("PC: %06x vs %06x", pc, m68ki_cpu.pc);\r
      err=1;\r
    }\r
\r
#if 0\r
    if( SekPc > Pico.romsize || SekPc < 0x200 ) {\r
      dprintf("PC out of bounds: %06x", SekPc);\r
      err=1;\r
    }\r
#endif\r
\r
    // compare regs\r
    for (i=0; i < 16; i++) {\r
      if (other_dar(i) != m68ki_cpu.dar[i]) {\r
        str = (i < 8) ? "d" : "a";\r
        dprintf("reg: %s%i: %08x vs %08x", str, i&7, other_dar(i), m68ki_cpu.dar[i]);\r
        err=1;\r
      }\r
    }\r
\r
    // SR\r
    if (other_get_sr() != (mu_sr = m68k_get_reg(NULL, M68K_REG_SR))) {\r
      dprintf("SR: %04x vs %04x (??s? 0iii 000x nzvc)", other_get_sr(), mu_sr);\r
      err=1;\r
    }\r
\r
    // IRQl\r
    if (other_get_irq() != (m68ki_cpu.int_level>>8)) {\r
      dprintf("IRQ: %i vs %i", other_get_irq(), (m68ki_cpu.int_level>>8));\r
      err=1;\r
    }\r
\r
    // OSP/USP\r
    if (other_osp != m68ki_cpu.sp[((mu_sr>>11)&4)^4]) {\r
      dprintf("OSP: %06x vs %06x", other_osp, m68ki_cpu.sp[((mu_sr>>11)&4)^4]);\r
      err=1;\r
    }\r
\r
    // stopped\r
    if ((other_is_stopped() && !m68ki_cpu.stopped) || (!other_is_stopped() && m68ki_cpu.stopped)) {\r
      dprintf("stopped: %i vs %i", other_is_stopped(), m68ki_cpu.stopped);\r
      err=1;\r
    }\r
\r
    // tracing\r
    if((other_is_tracing() && !m68ki_tracing) || (!other_is_tracing() && m68ki_tracing)) {\r
      dprintf("tracing: %i vs %i", other_is_tracing(), m68ki_tracing);\r
      err=1;\r
    }\r
\r
    if(err) dumpPCandExit(is_sub);\r
\r
#if 0\r
    if (m68ki_cpu.dar[15] < 0x00ff0000 || m68ki_cpu.dar[15] >= 0x01000000)\r
    {\r
      other_dar(15) = m68ki_cpu.dar[15] = 0xff8000;\r
    }\r
#endif\r
#if 0\r
    m68k_set_reg(M68K_REG_SR, ((mu_sr-1)&~0x2000)|(mu_sr&0x2000)); // broken\r
    CycloneSetSr(currentC68k, ((mu_sr-1)&~0x2000)|(mu_sr&0x2000));\r
    currentC68k->stopped = m68ki_cpu.stopped = 0;\r
    if(SekPc > 0x400 && (currentC68k->a[7] < 0xff0000 || currentC68k->a[7] > 0xffffff))\r
    currentC68k->a[7] = m68ki_cpu.dar[15] = 0xff8000;\r
#endif\r
\r
    cyc_done += cyc_other;\r
    ops++;\r
  }\r
\r
  return cyc_done;\r
}\r