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More Fixes 

The possibility of the RSP instruction at address 0xFFC being JR was
never accounted for. This fixes Wave Race and Star Wars - Shadow of the
Empire.

The accumulator analysis was wrong, which broke games like Mario No
Photopie.
This commit is contained in:
LegendOfDragoon 2015-01-11 19:49:04 -08:00
parent 43c6017ddb
commit 02fe2e7241
2 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
Source/RSP/Recompiler Analysis.c
View File

@ -247,20 +247,25 @@ DWORD WriteToAccum2 (int Location, int PC, BOOL RecursiveCall) {
case RSP_VECTOR_VMADL:
case RSP_VECTOR_VMADM:
case RSP_VECTOR_VMADN:
case RSP_VECTOR_VMADH:
return TRUE;
case RSP_VECTOR_VMADH:
if (Location == Low16BitAccum) { break; }
return TRUE;
case RSP_VECTOR_VABS:
case RSP_VECTOR_VADD:
case RSP_VECTOR_VADDC:
case RSP_VECTOR_VSUB:
case RSP_VECTOR_VSUBC:
case RSP_VECTOR_VAND:
case RSP_VECTOR_VNAND:
case RSP_VECTOR_VOR:
case RSP_VECTOR_VNOR:
case RSP_VECTOR_VXOR:
case RSP_VECTOR_VNXOR:
/* since these modify the accumulator lower-16 bits we can */
/* safely assume these 'reset' the accumulator no matter what */
return FALSE;
// return FALSE;
case RSP_VECTOR_VCR:
case RSP_VECTOR_VCH:
case RSP_VECTOR_VCL:
@ -272,11 +277,11 @@ DWORD WriteToAccum2 (int Location, int PC, BOOL RecursiveCall) {
case RSP_VECTOR_VLT:
case RSP_VECTOR_VEQ:
case RSP_VECTOR_VGE:
case RSP_VECTOR_VMRG:
if (Location == Low16BitAccum) { return FALSE; }
break;
case RSP_VECTOR_VMOV:
case RSP_VECTOR_VMRG:
break;
case RSP_VECTOR_VSAW:
return TRUE;

2
Source/RSP/Recompiler CPU.c
View File

@ -878,7 +878,7 @@ void CompilerRSPBlock ( void ) {
CompilePC += 4;
break;
}
} while ( NextInstruction != FINISH_BLOCK && CompilePC < 0x1000);
} while (NextInstruction != FINISH_BLOCK && (CompilePC < 0x1000 || NextInstruction == DELAY_SLOT));
CPU_Message("==== end of recompiled code ====");
if (Compiler.bReOrdering == TRUE) {