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use mem mapping for idle loop det

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@829 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-11-04 21:10:21 +00:00
parent ed8cf79be8
commit 488c0bbf55
1 changed files with 22 additions and 13 deletions
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35
pico/sek.c
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@ -8,6 +8,7 @@
#include "pico_int.h"
#include "memory.h"
int SekCycleCnt=0; // cycles done in this frame
@ -189,7 +190,7 @@ PICO_INTERNAL void SekSetRealTAS(int use_real)
#include "cpu/Cyclone/tools/idle.h"
#endif
static int *idledet_addrs = NULL;
static unsigned short **idledet_ptrs = NULL;
static int idledet_count = 0, idledet_bads = 0;
int idledet_start_frame = 0;
@ -214,13 +215,13 @@ void SekRegisterIdleHit(unsigned int pc)
void SekInitIdleDet(void)
{
void *tmp = realloc(idledet_addrs, 0x200*4);
unsigned short **tmp = realloc(idledet_ptrs, 0x200*4);
if (tmp == NULL) {
free(idledet_addrs);
idledet_addrs = NULL;
free(idledet_ptrs);
idledet_ptrs = NULL;
}
else
idledet_addrs = tmp;
idledet_ptrs = tmp;
idledet_count = idledet_bads = 0;
idledet_start_frame = Pico.m.frame_count + 360;
#ifdef IDLE_STATS
@ -284,6 +285,9 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)
{
int is_main68k = 1;
u16 *target;
uptr v;
#if defined(EMU_C68K)
struct Cyclone *cyc = ctx;
is_main68k = cyc == &PicoCpuCM68k;
@ -295,19 +299,24 @@ int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop, void *ctx)
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
// XXX: probably shouldn't patch RAM too
v = m68k_read16_map[pc >> M68K_MEM_SHIFT];
if (!(v & 0x80000000))
target = (u16 *)((v << 1) + pc);
else {
if (++idledet_bads > 128)
return 2; // remove detector
return 1; // don't patch
}
if (idledet_count >= 0x200 && (idledet_count & 0x1ff) == 0) {
void *tmp = realloc(idledet_addrs, (idledet_count+0x200)*4);
if (tmp == NULL) return 1;
idledet_addrs = tmp;
unsigned short **tmp = realloc(idledet_ptrs, (idledet_count+0x200)*4);
if (tmp == NULL)
return 1;
idledet_ptrs = tmp;
}
if (pc < Pico.romsize)
idledet_addrs[idledet_count++] = pc;
idledet_ptrs[idledet_count++] = target;
return 0;
}
@ -322,7 +331,7 @@ void SekFinishIdleDet(void)
#endif
while (idledet_count > 0)
{
unsigned short *op = (unsigned short *)&Pico.rom[idledet_addrs[--idledet_count]];
unsigned short *op = idledet_ptrs[--idledet_count];
if ((*op & 0xfd00) == 0x7100)
*op &= 0xff, *op |= 0x6600;
else if ((*op & 0xfd00) == 0x7500)