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idle loops adjusted

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@549 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-07-15 17:04:43 +00:00
parent 1413b9a118
commit 5ed2a20eaa
5 changed files with 89 additions and 52 deletions
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41
Pico/Sek.c
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@ -199,6 +199,25 @@ static int *idledet_addrs = NULL;
static int idledet_count = 0, idledet_bads = 0;
int idledet_start_frame = 0;
#if 0
#define IDLE_STATS 1
unsigned int idlehit_addrs[128], idlehit_counts[128];
void SekRegisterIdleHit(unsigned int pc)
{
int i;
for (i = 0; i < 127 && idlehit_addrs[i]; i++) {
if (idlehit_addrs[i] == pc) {
idlehit_counts[i]++;
return;
}
}
idlehit_addrs[i] = pc;
idlehit_counts[i] = 1;
idlehit_addrs[i+1] = 0;
}
#endif
void SekInitIdleDet(void)
{
void *tmp = realloc(idledet_addrs, 0x200*4);
@ -210,6 +229,9 @@ void SekInitIdleDet(void)
idledet_addrs = tmp;
idledet_count = idledet_bads = 0;
idledet_start_frame = Pico.m.frame_count + 360;
#ifdef IDLE_STATS
idlehit_addrs[0] = 0;
#endif
#ifdef EMU_C68K
CycloneInitIdle();
@ -224,6 +246,10 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
// printf("SekIsIdleCode %04x %i\n", *dst, bytes);
switch (bytes)
{
case 2:
if ((*dst & 0xf000) != 0x6000) // not another branch
return 1;
break;
case 4:
if ( (*dst & 0xfff8) == 0x4a10 || // tst.b ($aX) // there should be no need to wait
(*dst & 0xfff8) == 0x4a28 || // tst.b ($xxxx,a0) // for byte change anywhere
@ -261,13 +287,20 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
return 0;
}
int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop)
int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)
{
#ifdef EMU_C68K
pc -= PicoCpuCM68k.membase;
int is_main68k = 1;
#if defined(EMU_C68K)
struct Cyclone *cyc = ctx;
is_main68k = cyc == &PicoCpuCM68k;
pc -= cyc->membase;
#elif defined(EMU_F68K)
is_main68k = ctx == &PicoCpuFM68k;
#endif
pc &= ~0xff000000;
elprintf(EL_IDLE, "idle: patch %06x %04x %04x #%i", pc, oldop, newop, idledet_count);
elprintf(EL_IDLE, "idle: patch %06x %04x %04x %c %c #%i", pc, oldop, newop,
(newop&0x200)?'n':'y', is_main68k?'m':'s', idledet_count);
if (pc > Pico.romsize && !(PicoAHW & PAHW_SVP)) {
if (++idledet_bads > 128) return 2; // remove detector
return 1; // don't patch