Emulation/ppsspp
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This commit is contained in:
Ced2911 2013-08-11 11:27:12 +02:00
parent 3a82881bf2
commit a28bf4c4aa
2 changed files with 33 additions and 9 deletions
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37
Common/ppcEmitter.cpp
View file

@ -125,33 +125,39 @@ namespace PpcGen {
}
void PPCXEmitter::BA (const void *fnptr) {
s32 func = (s32)fnptr - s32(code);
s32 func = (s32)fnptr;
u32 instr = (0x48000002 | ((s32)((func) & 0x3fffffc)));
Write32(instr);
}
void PPCXEmitter::BLA (const void *fnptr) {
s32 func = (s32)fnptr - s32(code);
s32 func = (s32)fnptr;
u32 instr = (0x48000003 | ((s32)((func) & 0x3fffffc)));
Write32(instr);
}
void PPCXEmitter::BEQ (const void *fnptr) {
s32 func = (s32)fnptr - s32(code);
u32 instr = (0x41820000 | ( func & 0xffff));
u32 instr = (0x41820000 | ( func & 0xfffc));
Write32(instr);
}
void PPCXEmitter::BGT(const void *fnptr) {
s32 func = (s32)fnptr - s32(code);
u32 instr = (0x41810000 | (((s16)(((func)+1))) & 0xffff));
u32 instr = (0x41810000 | (((s16)(((func)+1))) & 0xfffc));
Write32(instr);
}
void PPCXEmitter::BLT (const void *fnptr) {
s32 func = (s32)fnptr - s32(code);
u32 instr = (0x41800000 | (((s16)(((func)+1))) & 0xffff));
u32 instr = (0x41800000 | (((s16)(((func)+1))) & 0xfffc));
Write32(instr);
}
void PPCXEmitter::BLE (const void *fnptr) {
s32 func = (s32)fnptr - s32(code);
u32 instr = (0x40810000 | (((s16)(((func)+1))) & 0xfffc));
Write32(instr);
}
@ -235,6 +241,16 @@ namespace PpcGen {
return branch;
}
FixupBranch PPCXEmitter::BLE() {
FixupBranch branch;
branch.type = _BLE;
branch.ptr = code;
branch.condition = condition;
//We'll write NOP here for now.
Write32(0x60000000);
return branch;
}
FixupBranch PPCXEmitter::B_Cond(FixupBranchType type) {
FixupBranch branch;
branch.type = type;
@ -287,11 +303,16 @@ namespace PpcGen {
// Compare
void PPCXEmitter::CMPLWI(PPCReg dest, unsigned short imm) {
Write32((0x28000000 | (dest << 16) | ((imm) & 0xffff)));
Write32((10<<26) | (dest << 16) | ((imm) & 0xffff));
Break();
}
void PPCXEmitter::CMPI(PPCReg dest, unsigned short imm) {
Write32((11<<26) | (dest << 16) | ((imm) & 0xffff));
}
void PPCXEmitter::CMPLI(PPCReg dest, unsigned short imm) {
Write32((0x2C000000 | (dest << 16) | ((imm) & 0xffff)));
Write32((10<<26) | (dest << 16) | ((imm) & 0xffff));
}
void PPCXEmitter::CMP(PPCReg a, PPCReg b) {

5
Common/ppcEmitter.h
View file

@ -178,6 +178,7 @@ public:
FixupBranch BL();
FixupBranch BNE();
FixupBranch BLT();
FixupBranch BLE();
FixupBranch B_Cond(FixupBranchType type);
@ -189,6 +190,7 @@ public:
void BA (const void *fnptr);
void BLA(const void *fnptr);
void BEQ(const void *fnptr);
void BLE(const void *fnptr);
void BLT(const void *fnptr);
void BGT(const void *fnptr);
void BEQ (PPCReg r);
@ -263,7 +265,8 @@ public:
// Compare
void CMPLWI (PPCReg dest, unsigned short imm);
void CMPLI (PPCReg dest, unsigned short imm);
void CMPLI (PPCReg dest, unsigned short imm);
void CMPI (PPCReg dest, unsigned short imm);
void CMP (PPCReg a, PPCReg b);
// Debug !