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svp block extractor for recompiler

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@354 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-02-10 20:07:36 +00:00
parent 6b6a3e50f2
commit 726bbb3e08
6 changed files with 287 additions and 25 deletions
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49
Pico/carthw/svp/ssp16.c
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@ -184,7 +184,6 @@
* flags correspond to full 32bit accumulator
* only Z and N status flags are emulated (others unused by SVP)
* modifiers for 'OP a, ri' are ignored (invalid?/not used by SVP)
* 'ld d, (a)' loads from program ROM
*/
#include "../../PicoInt.h"
@ -543,9 +542,11 @@ static u32 read_PM0(void)
if (d != (u32)-1) return d;
elprintf(EL_SVP, "PM0 raw r %04x @ %04x", rPM0, GET_PPC_OFFS());
d = rPM0;
#ifndef EMBED_INTERPRETER
if (!(d & 2) && (GET_PPC_OFFS() == 0x800 || GET_PPC_OFFS() == 0x1851E)) {
ssp->emu_status |= SSP_WAIT_PM0; elprintf(EL_SVP, "det TIGHT loop: PM0");
}
#endif
rPM0 &= ~2; // ?
return d;
}
@ -622,12 +623,14 @@ static void write_XST(u32 d)
static u32 read_PM4(void)
{
u32 d = pm_io(4, 0, 0);
#ifndef EMBED_INTERPRETER
if (d == 0) {
switch (GET_PPC_OFFS()) {
case 0x0854: ssp->emu_status |= SSP_WAIT_30FE08; elprintf(EL_SVP, "det TIGHT loop: [30fe08]"); break;
case 0x4f12: ssp->emu_status |= SSP_WAIT_30FE06; elprintf(EL_SVP, "det TIGHT loop: [30fe06]"); break;
}
}
#endif
if (d != (u32)-1) return d;
// can be removed?
elprintf(EL_SVP|EL_ANOMALY, "PM4 raw r %04x @ %04x", rPM4, GET_PPC_OFFS());
@ -875,6 +878,24 @@ static u32 ptr2_read(int op)
// -----------------------------------------------------
#if defined(USE_DEBUGGER) // || defined(EMBED_INTERPRETER)
static void debug_dump2file(const char *fname, void *mem, int len)
{
FILE *f = fopen(fname, "wb");
unsigned short *p = mem;
int i;
if (f) {
for (i = 0; i < len/2; i++) p[i] = (p[i]<<8) | (p[i]>>8);
fwrite(mem, 1, len, f);
fclose(f);
for (i = 0; i < len/2; i++) p[i] = (p[i]<<8) | (p[i]>>8);
printf("dumped to %s\n", fname);
}
else
printf("dump failed\n");
}
#endif
#ifdef USE_DEBUGGER
static void debug_dump(void)
{
@ -904,22 +925,6 @@ static void debug_dump_mem(void)
}
}
static void debug_dump2file(const char *fname, void *mem, int len)
{
FILE *f = fopen(fname, "wb");
unsigned short *p = mem;
int i;
if (f) {
for (i = 0; i < len/2; i++) p[i] = (p[i]<<8) | (p[i]>>8);
fwrite(mem, 1, len, f);
fclose(f);
for (i = 0; i < len/2; i++) p[i] = (p[i]<<8) | (p[i]>>8);
printf("dumped to %s\n", fname);
}
else
printf("dump failed\n");
}
static int bpts[10] = { 0, };
static void debug(unsigned int pc, unsigned int op)
@ -995,7 +1000,9 @@ static
#endif
void ssp1601_run(int cycles)
{
#ifndef EMBED_INTERPRETER
SET_PC(rPC);
#endif
g_cycles = cycles;
while (g_cycles > 0 && !(ssp->emu_status & SSP_WAIT_MASK))
@ -1177,6 +1184,9 @@ void ssp1601_run(int cycles)
case 0x6c: OP_ORA (op & 0xff); break;
case 0x7c: OP_EORA(op & 0xff); break;
#ifdef EMBED_INTERPRETER
case 0x7f: goto interp_end; /* pseudo op */
#endif
default:
elprintf(EL_ANOMALY|EL_SVP, "ssp FIXME unhandled op %04x @ %04x", op, GET_PPC_OFFS());
break;
@ -1184,8 +1194,11 @@ void ssp1601_run(int cycles)
g_cycles--;
}
read_P(); // update P
rPC = GET_PC();
#ifdef EMBED_INTERPRETER
interp_end:
#endif
read_P(); // update P
if (ssp->gr[SSP_GR0].v != 0xffff0000)
elprintf(EL_ANOMALY|EL_SVP, "ssp FIXME: REG 0 corruption! %08x", ssp->gr[SSP_GR0].v);