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more idle detection, minor stuff

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@524 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2008-07-05 16:03:00 +00:00
parent 4aed476f24
commit b06778874d
5 changed files with 31 additions and 25 deletions
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36
Pico/Sek.c
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@ -210,31 +210,35 @@ int SekIsIdleCode(unsigned short *dst, int bytes)
switch (bytes)
{
case 4:
if ( (*dst & 0xfff8) == 0x4a10 || // tst.b ($aX) // where should be no need to wait
(*dst & 0xfff8) == 0x4a28 || // tst.b ($xxxx,a0) // for byte change anywhere
(*dst & 0xff3f) == 0x4a38 || // tst.x ($xxxx.w), tas ($xxxx.w)
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
(*dst & 0xff3f) == 0x4a38 || // tst.x ($xxxx.w); tas ($xxxx.w)
(*dst & 0xc1ff) == 0x0038 || // move.x ($xxxx.w), dX
(*dst & 0xf13f) == 0xb038) // cmp.x ($xxxx.w), dX
return 1;
break;
case 6:
if ( ((dst[1] & 0xe0) == 0xe0 && ( // RAM
*dst == 0x4a39 || // tst.b ($xxxxxxxx)
*dst == 0x4a79 || // tst.w ($xxxxxxxx)
*dst == 0x4ab9)) || // tst.l ($xxxxxxxx)
*dst == 0x0838) // btst $X, ($xxxx.w) [6 byte op]
if ( ((dst[1] & 0xe0) == 0xe0 && ( // RAM and
*dst == 0x4a39 || // tst.b ($xxxxxxxx)
*dst == 0x4a79 || // tst.w ($xxxxxxxx)
*dst == 0x4ab9 || // tst.l ($xxxxxxxx)
(*dst & 0xc1ff) == 0x0039 || // move.x ($xxxxxxxx), dX
(*dst & 0xf13f) == 0xb039))||// cmp.x ($xxxxxxxx), dX
*dst == 0x0838 || // btst $X, ($xxxx.w) [6 byte op]
(*dst & 0xffbf) == 0x0c38) // cmpi.{b,w} $X, ($xxxx.w)
return 1;
break;
case 8:
if ( (dst[2] & 0xe0) == 0xe0 && ( // RAM
*dst == 0x0839 || // btst $X, ($xxxxxxxx.w) [8 byte op]
(*dst & 0xffbf) == 0x0c39)) // cmpi.{b,w} $X, ($xxxxxxxx)
if ( ((dst[2] & 0xe0) == 0xe0 && ( // RAM and
*dst == 0x0839 || // btst $X, ($xxxxxxxx.w) [8 byte op]
(*dst & 0xffbf) == 0x0c39))||// cmpi.{b,w} $X, ($xxxxxxxx)
*dst == 0x0cb8) // cmpi.l $X, ($xxxx.w)
return 1;
break;
case 12:
if ((*dst & 0xf1f8) == 0x3010 && // move.w (aX), dX
(dst[1]&0xf100) == 0x0000 && // arithmetic
(dst[3]&0xf100) == 0x0000) // arithmetic
(dst[1]&0xf100) == 0x0000 && // arithmetic
(dst[3]&0xf100) == 0x0000) // arithmetic
return 1;
break;
}
@ -249,7 +253,7 @@ int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop)
#endif
pc &= ~0xff000000;
elprintf(EL_IDLE, "idle: patch %06x %04x %04x #%i", pc, oldop, newop, idledet_count);
if (pc > Pico.romsize) {
if (pc > Pico.romsize && !(PicoAHW & PAHW_SVP)) {
if (++idledet_bads > 128) return 2; // remove detector
return 1; // don't patch
}
@ -260,7 +264,9 @@ int SekRegisterIdlePatch(unsigned int pc, int oldop, int newop)
idledet_addrs = tmp;
}
idledet_addrs[idledet_count++] = pc;
if (pc < Pico.romsize)
idledet_addrs[idledet_count++] = pc;
return 0;
}