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picodrive/cpu/sh2/mame/sh2dasm.c
notaz 679af8a3f4 32x: interpreter-wrap drc works (demos only). SVP drc refactoring. 
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@812 be3aeb3a-fb24-0410-a615-afba39da0efa
2009-10-13 10:07:27 +00:00

654 lines
16 KiB
C
Raw Blame History

#include <stdio.h>
#include "sh2dasm.h"
typedef int INT32;
typedef unsigned int UINT32;
typedef unsigned short UINT16;
typedef unsigned char UINT8;
#define DASMFLAG_STEP_OUT 0
#define DASMFLAG_STEP_OVER 0
#define DASMFLAG_STEP_OVER_EXTRA(x) 0
#define SIGNX8(x) (((INT32)(x) << 24) >> 24)
#define SIGNX12(x) (((INT32)(x) << 20) >> 20)
#define Rn ((opcode >> 8) & 15)
#define Rm ((opcode >> 4) & 15)
static const char *const regname[16] = {
"R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7",
"R8", "R9", "R10","R11","R12","R13","R14","SP"
};
static UINT32 op0000(char *buffer, UINT32 pc, UINT16 opcode)
{
UINT32 flags = 0;
switch(opcode & 0x3f)
{
case 0x02:
sprintf(buffer,"STC SR,%s", regname[Rn]);
break;
case 0x03:
sprintf(buffer,"BSRF %s", regname[Rn]);
break;
case 0x08:
sprintf(buffer,"CLRT");
break;
case 0x09:
sprintf(buffer,"NOP");
break;
case 0x0A:
sprintf(buffer,"STS MACH,%s", regname[Rn]);
break;
case 0x0B:
sprintf(buffer,"RTS");
flags = DASMFLAG_STEP_OUT;
break;
case 0x12:
sprintf(buffer,"STS GBR,%s", regname[Rn]);
break;
case 0x18:
sprintf(buffer,"SETT");
break;
case 0x19:
sprintf(buffer,"DIV0U");
break;
case 0x1A:
sprintf(buffer,"STS MACL,%s", regname[Rn]);
break;
case 0x1B:
sprintf(buffer,"SLEEP");
break;
case 0x22:
sprintf(buffer,"STC VBR,%s", regname[Rn]);
break;
case 0x23:
sprintf(buffer,"BRAF %s", regname[Rn]);
break;
case 0x28:
sprintf(buffer,"CLRMAC");
break;
case 0x29:
sprintf(buffer,"MOVT %s", regname[Rn]);
break;
case 0x2A:
sprintf(buffer,"STS PR,%s", regname[Rn]);
break;
case 0x2B:
sprintf(buffer,"RTE");
flags = DASMFLAG_STEP_OUT;
break;
default:
switch(opcode & 15)
{
case 0:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 1:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 2:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 3:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 4:
sprintf(buffer, "MOV.B %s,@(R0,%s)", regname[Rm], regname[Rn]);
break;
case 5:
sprintf(buffer, "MOV.W %s,@(R0,%s)", regname[Rm], regname[Rn]);
break;
case 6:
sprintf(buffer, "MOV.L %s,@(R0,%s)", regname[Rm], regname[Rn]);
break;
case 7:
sprintf(buffer, "MUL.L %s,%s", regname[Rm], regname[Rn]);
break;
case 8:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 9:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 10:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 11:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 12:
sprintf(buffer, "MOV.B @(R0,%s),%s", regname[Rm], regname[Rn]);
break;
case 13:
sprintf(buffer, "MOV.W @(R0,%s),%s", regname[Rm], regname[Rn]);
break;
case 14:
sprintf(buffer, "MOV.L @(R0,%s),%s", regname[Rm], regname[Rn]);
break;
case 15:
sprintf(buffer, "MAC.L @%s+,@%s+", regname[Rn], regname[Rm]);
break;
}
}
return flags;
}
static UINT32 op0001(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "MOV.L %s,@($%02X,%s)", regname[Rm], (opcode & 15) * 4, regname[Rn]);
return 0;
}
static UINT32 op0010(char *buffer, UINT32 pc, UINT16 opcode)
{
switch (opcode & 15)
{
case 0:
sprintf(buffer, "MOV.B %s,@%s", regname[Rm], regname[Rn]);
break;
case 1:
sprintf(buffer, "MOV.W %s,@%s", regname[Rm], regname[Rn]);
break;
case 2:
sprintf(buffer, "MOV.L %s,@%s", regname[Rm], regname[Rn]);
break;
case 3:
sprintf(buffer, "?????? $%04X", opcode);
break;
case 4:
sprintf(buffer, "MOV.B %s,@-%s", regname[Rm], regname[Rn]);
break;
case 5:
sprintf(buffer, "MOV.W %s,@-%s", regname[Rm], regname[Rn]);
break;
case 6:
sprintf(buffer, "MOV.L %s,@-%s", regname[Rm], regname[Rn]);
break;
case 7:
sprintf(buffer, "DIV0S %s,%s", regname[Rm], regname[Rn]);
break;
case 8:
sprintf(buffer, "TST %s,%s", regname[Rm], regname[Rn]);
break;
case 9:
sprintf(buffer, "AND %s,%s", regname[Rm], regname[Rn]);
break;
case 10:
sprintf(buffer, "XOR %s,%s", regname[Rm], regname[Rn]);
break;
case 11:
sprintf(buffer, "OR %s,%s", regname[Rm], regname[Rn]);
break;
case 12:
sprintf(buffer, "CMP/STR %s,%s", regname[Rm], regname[Rn]);
break;
case 13:
sprintf(buffer, "XTRCT %s,%s", regname[Rm], regname[Rn]);
break;
case 14:
sprintf(buffer, "MULU.W %s,%s", regname[Rm], regname[Rn]);
break;
case 15:
sprintf(buffer, "MULS.W %s,%s", regname[Rm], regname[Rn]);
break;
}
return 0;
}
static UINT32 op0011(char *buffer, UINT32 pc, UINT16 opcode)
{
switch (opcode & 15)
{
case 0:
sprintf(buffer, "CMP/EQ %s,%s", regname[Rm], regname[Rn]);
break;
case 1:
sprintf(buffer, "?????? %s,%s", regname[Rm], regname[Rn]);
break;
case 2:
sprintf(buffer, "CMP/HS %s,%s", regname[Rm], regname[Rn]);
break;
case 3:
sprintf(buffer, "CMP/GE %s,%s", regname[Rm], regname[Rn]);
break;
case 4:
sprintf(buffer, "DIV1 %s,%s", regname[Rm], regname[Rn]);
break;
case 5:
sprintf(buffer, "DMULU.L %s,%s", regname[Rm], regname[Rn]);
break;
case 6:
sprintf(buffer, "CMP/HI %s,%s", regname[Rm], regname[Rn]);
break;
case 7:
sprintf(buffer, "CMP/GT %s,%s", regname[Rm], regname[Rn]);
break;
case 8:
sprintf(buffer, "SUB %s,%s", regname[Rm], regname[Rn]);
break;
case 9:
sprintf(buffer, "?????? %s,%s", regname[Rm], regname[Rn]);
break;
case 10:
sprintf(buffer, "SUBC %s,%s", regname[Rm], regname[Rn]);
break;
case 11:
sprintf(buffer, "SUBV %s,%s", regname[Rm], regname[Rn]);
break;
case 12:
sprintf(buffer, "ADD %s,%s", regname[Rm], regname[Rn]);
break;
case 13:
sprintf(buffer, "DMULS.L %s,%s", regname[Rm], regname[Rn]);
break;
case 14:
sprintf(buffer, "ADDC %s,%s", regname[Rm], regname[Rn]);
break;
case 15:
sprintf(buffer, "ADDV %s,%s", regname[Rm], regname[Rn]);
break;
}
return 0;
}
static UINT32 op0100(char *buffer, UINT32 pc, UINT16 opcode)
{
UINT32 flags = 0;
switch(opcode & 0x3F)
{
case 0x00:
sprintf(buffer, "SHLL %s", regname[Rn]);
break;
case 0x01:
sprintf(buffer, "SHLR %s", regname[Rn]);
break;
case 0x02:
sprintf(buffer, "STS.L MACH,@-%s", regname[Rn]);
break;
case 0x03:
sprintf(buffer, "STC.L SR,@-%s", regname[Rn]);
break;
case 0x04:
sprintf(buffer, "ROTL %s", regname[Rn]);
break;
case 0x05:
sprintf(buffer, "ROTR %s", regname[Rn]);
break;
case 0x06:
sprintf(buffer, "LDS.L @%s+,MACH", regname[Rn]);
break;
case 0x07:
sprintf(buffer, "LDC.L @%s+,SR", regname[Rn]);
break;
case 0x08:
sprintf(buffer, "SHLL2 %s", regname[Rn]);
break;
case 0x09:
sprintf(buffer, "SHLR2 %s", regname[Rn]);
break;
case 0x0a:
sprintf(buffer, "LDS %s,MACH", regname[Rn]);
break;
case 0x0b:
sprintf(buffer, "JSR %s", regname[Rn]);
flags = DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1);
break;
case 0x0e:
sprintf(buffer, "LDC %s,SR", regname[Rn]);
break;
case 0x10:
sprintf(buffer, "DT %s", regname[Rn]);
break;
case 0x11:
sprintf(buffer, "CMP/PZ %s", regname[Rn]);
break;
case 0x12:
sprintf(buffer, "STS.L MACL,@-%s", regname[Rn]);
break;
case 0x13:
sprintf(buffer, "STC.L GBR,@-%s", regname[Rn]);
break;
case 0x15:
sprintf(buffer, "CMP/PL %s", regname[Rn]);
break;
case 0x16:
sprintf(buffer, "LDS.L @%s+,MACL", regname[Rn]);
break;
case 0x17:
sprintf(buffer, "LDC.L @%s+,GBR", regname[Rn]);
break;
case 0x18:
sprintf(buffer, "SHLL8 %s", regname[Rn]);
break;
case 0x19:
sprintf(buffer, "SHLR8 %s", regname[Rn]);
break;
case 0x1a:
sprintf(buffer, "LDS %s,MACL", regname[Rn]);
break;
case 0x1b:
sprintf(buffer, "TAS %s", regname[Rn]);
break;
case 0x1e:
sprintf(buffer, "LDC %s,GBR", regname[Rn]);
break;
case 0x20:
sprintf(buffer, "SHAL %s", regname[Rn]);
break;
case 0x21:
sprintf(buffer, "SHAR %s", regname[Rn]);
break;
case 0x22:
sprintf(buffer, "STS.L PR,@-%s", regname[Rn]);
break;
case 0x23:
sprintf(buffer, "STC.L VBR,@-%s", regname[Rn]);
break;
case 0x24:
sprintf(buffer, "ROTCL %s", regname[Rn]);
break;
case 0x25:
sprintf(buffer, "ROTCR %s", regname[Rn]);
break;
case 0x26:
sprintf(buffer, "LDS.L @%s+,PR", regname[Rn]);
break;
case 0x27:
sprintf(buffer, "LDC.L @%s+,VBR", regname[Rn]);
break;
case 0x28:
sprintf(buffer, "SHLL16 %s", regname[Rn]);
break;
case 0x29:
sprintf(buffer, "SHLR16 %s", regname[Rn]);
break;
case 0x2a:
sprintf(buffer, "LDS %s,PR", regname[Rn]);
break;
case 0x2b:
sprintf(buffer, "JMP %s", regname[Rn]);
break;
case 0x2e:
sprintf(buffer, "LDC %s,VBR", regname[Rn]);
break;
default:
if ((opcode & 15) == 15)
sprintf(buffer, "MAC.W @%s+,@%s+", regname[Rm], regname[Rn]);
else
sprintf(buffer, "?????? $%04X", opcode);
}
return flags;
}
static UINT32 op0101(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "MOV.L @($%02X,%s),%s", (opcode & 15) * 4, regname[Rm], regname[Rn]);
return 0;
}
static UINT32 op0110(char *buffer, UINT32 pc, UINT16 opcode)
{
switch(opcode & 0xF)
{
case 0x00:
sprintf(buffer, "MOV.B @%s,%s", regname[Rm], regname[Rn]);
break;
case 0x01:
sprintf(buffer, "MOV.W @%s,%s", regname[Rm], regname[Rn]);
break;
case 0x02:
sprintf(buffer, "MOV.L @%s,%s", regname[Rm], regname[Rn]);
break;
case 0x03:
sprintf(buffer, "MOV %s,%s", regname[Rm], regname[Rn]);
break;
case 0x04:
sprintf(buffer, "MOV.B @%s+,%s", regname[Rm], regname[Rn]);
break;
case 0x05:
sprintf(buffer, "MOV.W @%s+,%s", regname[Rm], regname[Rn]);
break;
case 0x06:
sprintf(buffer, "MOV.L @%s+,%s", regname[Rm], regname[Rn]);
break;
case 0x07:
sprintf(buffer, "NOT %s,%s", regname[Rm], regname[Rn]);
break;
case 0x08:
sprintf(buffer, "SWAP.B %s,%s", regname[Rm], regname[Rn]);
break;
case 0x09:
sprintf(buffer, "SWAP.W %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0a:
sprintf(buffer, "NEGC %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0b:
sprintf(buffer, "NEG %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0c:
sprintf(buffer, "EXTU.B %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0d:
sprintf(buffer, "EXTU.W %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0e:
sprintf(buffer, "EXTS.B %s,%s", regname[Rm], regname[Rn]);
break;
case 0x0f:
sprintf(buffer, "EXTS.W %s,%s", regname[Rm], regname[Rn]);
break;
}
return 0;
}
static UINT32 op0111(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "ADD #$%02X,%s", opcode & 0xff, regname[Rn]);
return 0;
}
static UINT32 op1000(char *buffer, UINT32 pc, UINT16 opcode)
{
switch((opcode >> 8) & 15)
{
case 0:
sprintf(buffer, "MOV.B R0,@($%02X,%s)", (opcode & 15), regname[Rm]);
break;
case 1:
sprintf(buffer, "MOV.W R0,@($%02X,%s)", (opcode & 15) * 2, regname[Rm]);
break;
case 4:
sprintf(buffer, "MOV.B @($%02X,%s),R0", (opcode & 15), regname[Rm]);
break;
case 5:
sprintf(buffer, "MOV.W @($%02X,%s),R0", (opcode & 15), regname[Rm]);
break;
case 8:
sprintf(buffer, "CMP/EQ #$%02X,R0", (opcode & 0xff));
break;
case 9:
sprintf(buffer, "BT $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2);
break;
case 11:
sprintf(buffer, "BF $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2);
break;
case 13:
sprintf(buffer, "BTS $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2);
break;
case 15:
sprintf(buffer, "BFS $%08X", pc + SIGNX8(opcode & 0xff) * 2 + 2);
break;
default :
sprintf(buffer, "invalid $%04X", opcode);
}
return 0;
}
static UINT32 op1001(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "MOV.W @($%04X,PC),%s", (opcode & 0xff) * 2, regname[Rn]);
return 0;
}
static UINT32 op1010(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "BRA $%08X", SIGNX12(opcode & 0xfff) * 2 + pc + 2);
return 0;
}
static UINT32 op1011(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "BSR $%08X", SIGNX12(opcode & 0xfff) * 2 + pc + 2);
return DASMFLAG_STEP_OVER | DASMFLAG_STEP_OVER_EXTRA(1);
}
static UINT32 op1100(char *buffer, UINT32 pc, UINT16 opcode)
{
UINT32 flags = 0;
switch((opcode >> 8) & 15)
{
case 0:
sprintf(buffer, "MOV.B R0,@($%02X,GBR)", opcode & 0xff);
break;
case 1:
sprintf(buffer, "MOV.W R0,@($%04X,GBR)", (opcode & 0xff) * 2);
break;
case 2:
sprintf(buffer, "MOV.L R0,@($%04X,GBR)", (opcode & 0xff) * 4);
break;
case 3:
sprintf(buffer, "TRAPA #$%02X", opcode & 0xff);
flags = DASMFLAG_STEP_OVER;
break;
case 4:
sprintf(buffer, "MOV.B @($%02X,GBR),R0", opcode & 0xff);
break;
case 5:
sprintf(buffer, "MOV.W @($%04X,GBR),R0", (opcode & 0xff) * 2);
break;
case 6:
sprintf(buffer, "MOV.L @($%04X,GBR),R0", (opcode & 0xff) * 4);
break;
case 7:
sprintf(buffer, "MOVA @($%04X,PC),R0", (opcode & 0xff) * 4);
break;
case 8:
sprintf(buffer, "TST #$%02X,R0", opcode & 0xff);
break;
case 9:
sprintf(buffer, "AND #$%02X,R0", opcode & 0xff);
break;
case 10:
sprintf(buffer, "XOR #$%02X,R0", opcode & 0xff);
break;
case 11:
sprintf(buffer, "OR #$%02X,R0", opcode & 0xff);
break;
case 12:
sprintf(buffer, "TST.B #$%02X,@(R0,GBR)", opcode & 0xff);
break;
case 13:
sprintf(buffer, "AND.B #$%02X,@(R0,GBR)", opcode & 0xff);
break;
case 14:
sprintf(buffer, "XOR.B #$%02X,@(R0,GBR)", opcode & 0xff);
break;
case 15:
sprintf(buffer, "OR.B #$%02X,@(R0,GBR)", opcode & 0xff);
break;
}
return flags;
}
static UINT32 op1101(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "MOV.L @($%02X,PC),%s ; #$%06x", (opcode * 4) & 0x3ff, regname[Rn],
(pc + ((opcode * 4) & 0x3ff) + 2) & ~3);
return 0;
}
static UINT32 op1110(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "MOV #$%02X,%s", (opcode & 0xff), regname[Rn]);
return 0;
}
static UINT32 op1111(char *buffer, UINT32 pc, UINT16 opcode)
{
sprintf(buffer, "unknown $%04X", opcode);
return 0;
}
unsigned DasmSH2(char *buffer, unsigned pc, UINT16 opcode)
{
UINT32 flags;
pc += 2;
switch((opcode >> 12) & 15)
{
case 0: flags = op0000(buffer,pc,opcode); break;
case 1: flags = op0001(buffer,pc,opcode); break;
case 2: flags = op0010(buffer,pc,opcode); break;
case 3: flags = op0011(buffer,pc,opcode); break;
case 4: flags = op0100(buffer,pc,opcode); break;
case 5: flags = op0101(buffer,pc,opcode); break;
case 6: flags = op0110(buffer,pc,opcode); break;
case 7: flags = op0111(buffer,pc,opcode); break;
case 8: flags = op1000(buffer,pc,opcode); break;
case 9: flags = op1001(buffer,pc,opcode); break;
case 10: flags = op1010(buffer,pc,opcode); break;
case 11: flags = op1011(buffer,pc,opcode); break;
case 12: flags = op1100(buffer,pc,opcode); break;
case 13: flags = op1101(buffer,pc,opcode); break;
case 14: flags = op1110(buffer,pc,opcode); break;
default: flags = op1111(buffer,pc,opcode); break;
}
return 0;//2 | flags | DASMFLAG_SUPPORTED;
}
#if 0
#define swab32(x) (((x) << 24) | (((x) << 8) & 0xff0000) | (((x) >> 8) & 0xff00) | ((x) >> 24))
#define swab16(x) ((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
int main(int argc, char *argv[])
{
unsigned short op;
char buff[256];
unsigned pc;
FILE *f;
int ret;
if (argv[1] == NULL) {
printf("usage\n%s <file>\n", argv[0]);
return 1;
}
f = fopen(argv[1], "rb");
if (f == NULL) {
fprintf(stderr, "can't open %s\n", argv[1]);
return 1;
}
for (pc = 0x140;; pc += 2)
{
fseek(f, pc, SEEK_SET);
ret = fread(&op, 1, sizeof(op), f);
if (ret != sizeof(op))
break;
DasmSH2(buff, pc, swab16(op));
printf("%06x %04x %s\n", pc, swab16(op), buff);
}
fclose(f);
return 0;
}
#endif
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