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Limited how long REP instructions are uninterruptable for, improves sound on games/demos that use high-frequency timer interrupts for sound output (eg Crystal Dream, Cronologia)

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This commit is contained in:
SarahW 2016-05-03 21:31:05 +01:00
commit 52636936e9
1 changed files with 22 additions and 18 deletions
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40
src/386_dynarec.c
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@ -293,6 +293,10 @@ int rep386(int fv)
uint32_t templ,templ2;
int tempz;
int tempi;
/*Limit the amount of time the instruction is uninterruptable for, so
that high frequency timers still work okay. This amount is different
for interpreter and recompiler*/
int cycles_end = cycles - ((is386 && cpu_use_dynarec) ? 1000 : 100);
cpu_reps++;
@ -543,7 +547,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?3:4;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -561,7 +565,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?3:4;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -579,7 +583,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?3:4;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -598,7 +602,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?3:4;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -617,7 +621,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?3:4;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -637,7 +641,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?3:4;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -767,7 +771,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?4:5;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -785,7 +789,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?4:5;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -803,7 +807,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?4:5;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -821,7 +825,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?4:5;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -839,7 +843,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?4:5;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -857,7 +861,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?4:5;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -970,7 +974,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?5:8;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -994,7 +998,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?5:8;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -1016,7 +1020,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?5:8;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -1038,7 +1042,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?5:8;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -1060,7 +1064,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?5:8;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;
@ -1082,7 +1086,7 @@ int rep386(int fv)
c--;
cycles-=(is486)?5:8;
ins++;
if (cycles < 0)
if (cycles < cycles_end)
break;
}
ins--;