drc: lots of new debug code

[picodrive.git] / cpu / sh2 / mame / sh2pico.c

diff --git a/cpu/sh2/mame/sh2pico.c b/cpu/sh2/mame/sh2pico.c
index cc6dce3..f321eb9 100644 (file)
--- a/cpu/sh2/mame/sh2pico.c
+++ b/cpu/sh2/mame/sh2pico.c
@@ -1,12 +1,17 @@
 #include "../sh2.h"
+#ifdef DRC_CMP
+#include "../compiler.c"
+#endif
 
 // MAME types
+#ifndef INT8
 typedef signed char  INT8;
 typedef signed short INT16;
 typedef signed int   INT32;
 typedef unsigned int   UINT32;
 typedef unsigned short UINT16;
 typedef unsigned char  UINT8;
+#endif
 
 #define RB(sh2, a) p32x_sh2_read8(a,sh2)
 #define RW(sh2, a) p32x_sh2_read16(a,sh2)
@@ -66,7 +71,12 @@ static unsigned int op_refs[0x10000];
 
 int sh2_execute(SH2 *sh2, int cycles)
 {
-       sh2 = sh2_;
+#ifdef DRC_CMP
+       unsigned int base_pc = 0, end_pc = 0;
+       unsigned char op_flags[BLOCK_CYCLE_LIMIT];
+#endif
+       UINT32 opcode;
+
        sh2->icount = cycles;
 
        if (sh2->icount <= 0)
@@ -76,7 +86,21 @@ int sh2_execute(SH2 *sh2, int cycles)
 
        do
        {
-               UINT32 opcode;
+#ifdef DRC_CMP
+               if (!sh2->delay) {
+                       if (sh2->pc < base_pc || sh2->pc > end_pc) {
+                               base_pc = sh2->pc;
+                               scan_block(base_pc, sh2->is_slave,
+                                       op_flags, &end_pc);
+                       }
+                       if ((OP_FLAGS(sh2->pc) & OF_TARGET) || sh2->pc == base_pc) {
+                               if (sh2->icount < 0)
+                                       break;
+                       }
+
+                       do_sh2_trace(sh2, sh2->icount);
+               }
+#endif
 
                if (sh2->delay)
                {
@@ -124,46 +148,16 @@ int sh2_execute(SH2 *sh2, int cycles)
                }
 
        }
+#ifndef DRC_CMP
        while (sh2->icount > 0 || sh2->delay);  /* can't interrupt before delay */
-
-       return sh2->cycles_timeslice - sh2->icount;
-}
-
-#else // DRC_SH2
-
-#ifdef __i386__
-#define REGPARM(x) __attribute__((regparm(x)))
 #else
-#define REGPARM(x)
+       while (1);
 #endif
 
-// drc debug
-void REGPARM(2) sh2_do_op(SH2 *sh2, int opcode)
-{
-       sh2->pc += 2;
-
-       switch (opcode & ( 15 << 12))
-       {
-               case  0<<12: op0000(sh2, opcode); break;
-               case  1<<12: op0001(sh2, opcode); break;
-               case  2<<12: op0010(sh2, opcode); break;
-               case  3<<12: op0011(sh2, opcode); break;
-               case  4<<12: op0100(sh2, opcode); break;
-               case  5<<12: op0101(sh2, opcode); break;
-               case  6<<12: op0110(sh2, opcode); break;
-               case  7<<12: op0111(sh2, opcode); break;
-               case  8<<12: op1000(sh2, opcode); break;
-               case  9<<12: op1001(sh2, opcode); break;
-               case 10<<12: op1010(sh2, opcode); break;
-               case 11<<12: op1011(sh2, opcode); break;
-               case 12<<12: op1100(sh2, opcode); break;
-               case 13<<12: op1101(sh2, opcode); break;
-               case 14<<12: op1110(sh2, opcode); break;
-               default: op1111(sh2, opcode); break;
-       }
+       return sh2->cycles_timeslice - sh2->icount;
 }
 
-#endif
+#endif // DRC_SH2
 
 #ifdef SH2_STATS
 #include <stdio.h>