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svp compiler: working asm dispatcher

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@383 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-03-12 21:45:20 +00:00
parent 13aba3fe28
commit 71bb1b7bd0
6 changed files with 155 additions and 604 deletions
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18
Pico/carthw/svp/ssp16.c
View file

@ -214,11 +214,9 @@
#define IJind (((op>>6)&4)|(op&3))
#ifndef EMBED_INTERPRETER
#define GET_PC() (PC - (unsigned short *)svp->iram_rom)
#define GET_PPC_OFFS() ((unsigned int)PC - (unsigned int)svp->iram_rom - 2)
#define SET_PC(d) PC = (unsigned short *)svp->iram_rom + d
#endif
#define REG_READ(r) (((r) <= 4) ? ssp->gr[r].h : read_handlers[r]())
#define REG_WRITE(r,d) { \
@ -363,9 +361,6 @@
#define CHECK_ST(d)
#endif
#ifndef EMBED_INTERPRETER
static
#endif
ssp1601_t *ssp = NULL;
static unsigned short *PC;
static int g_cycles;
@ -526,9 +521,6 @@ static u32 pm_io(int reg, int write, u32 d)
elprintf(EL_SVP, "ssp IRAM w [%06x] %04x (inc %i)", (addr<<1)&0x7ff, d, inc);
((unsigned short *)svp->iram_rom)[addr&0x3ff] = d;
ssp->pmac_write[reg] += inc;
#ifdef EMBED_INTERPRETER
ssp->drc.iram_dirty = 1;
#endif
}
else
{
@ -578,11 +570,9 @@ 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;
}
@ -659,14 +649,12 @@ 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());
@ -913,7 +901,7 @@ static u32 ptr2_read(int op)
// -----------------------------------------------------
#if defined(USE_DEBUGGER) //|| defined(EMBED_INTERPRETER)
#if defined(USE_DEBUGGER)
static void debug_dump2file(const char *fname, void *mem, int len)
{
FILE *f = fopen(fname, "wb");
@ -1029,9 +1017,8 @@ void ssp1601_reset(ssp1601_t *l_ssp)
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))
@ -1050,7 +1037,6 @@ void ssp1601_run(int cycles)
CHECK_B_SET();
if (op == 0) break; // nop
if (op == ((SSP_A<<4)|SSP_P)) { // A <- P
// not sure. MAME claims that only hi word is transfered.
read_P(); // update P
rA32 = rP.v;
}