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Ced2911 2013-08-16 15:53:20 +02:00
parent 3eb1696e09
commit 628a737500
2 changed files with 8 additions and 33 deletions
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37
Common/ppcEmitter.cpp
View file

@ -110,12 +110,10 @@ namespace PpcGen {
Write32(instr); Write32(instr);
} }
// use lwz ... can't find good opcode :s
void PPCXEmitter::LD (PPCReg dest, PPCReg src, int offset) { void PPCXEmitter::LD (PPCReg dest, PPCReg src, int offset) {
u32 instr = ((58 << 26) | (dest << 21) | (src << 16) | ((offset) & 0xffff)); u32 instr = ((58 << 26) | (dest << 21) | (src << 16) | ((offset) & 0xffff));
Write32(instr); Write32(instr);
} }
// use stw ... can't find good opcode :s
void PPCXEmitter::STD (PPCReg dest, PPCReg src, int offset) { void PPCXEmitter::STD (PPCReg dest, PPCReg src, int offset) {
u32 instr = ((62 << 26) | (dest << 21) | (src << 16) | ((offset) & 0xffff)); u32 instr = ((62 << 26) | (dest << 21) | (src << 16) | ((offset) & 0xffff));
Write32(instr); Write32(instr);
@ -332,7 +330,7 @@ namespace PpcGen {
} }
} }
// Compare // Compare (Only use CR0 atm...)
void PPCXEmitter::CMPI(PPCReg dest, unsigned short imm) { void PPCXEmitter::CMPI(PPCReg dest, unsigned short imm) {
Write32((11<<26) | (dest << 16) | ((imm) & 0xffff)); Write32((11<<26) | (dest << 16) | ((imm) & 0xffff));
} }
@ -372,14 +370,10 @@ namespace PpcGen {
// Quick Call // Quick Call
// dest = LIS(imm) + ORI(+imm) // dest = LIS(imm) + ORI(+imm)
void PPCXEmitter::MOVI2R(PPCReg dest, unsigned int imm) { void PPCXEmitter::MOVI2R(PPCReg dest, unsigned int imm) {
/*
if (imm == (unsigned short)imm) { if (imm == (unsigned short)imm) {
// 16bit // 16bit
LI(dest, imm & 0xFFFF); LI(dest, imm & 0xFFFF);
ANDIS(dest, dest, 0); } else {
} else
*/
{
// HI 16bit // HI 16bit
LIS(dest, imm>>16); LIS(dest, imm>>16);
if ((imm & 0xFFFF) != 0) { if ((imm & 0xFFFF) != 0) {
@ -390,22 +384,8 @@ namespace PpcGen {
} }
void PPCXEmitter::QuickCallFunction(void *func) { void PPCXEmitter::QuickCallFunction(void *func) {
/* /** TODO : can use simple jump **/
// Must check if we need to use bctrl or simple branch
u32 func_addr = (u32) func;
u32 code_addr = (u32) code;
if (func_addr - code_addr > 0x1fffffc) {
// Load func address
MOVI2R(R0, func_addr);
// Set it to link register
MTCTR(R0);
// Branch
BCTRL();
} else {
// Direct branch
BL(func);
}
*/
u32 func_addr = (u32) func; u32 func_addr = (u32) func;
// Load func address // Load func address
MOVI2R(R0, func_addr); MOVI2R(R0, func_addr);
@ -471,7 +451,6 @@ namespace PpcGen {
} }
// Others ... // Others ...
void PPCXEmitter::SetCodePtr(u8 *ptr) void PPCXEmitter::SetCodePtr(u8 *ptr)
{ {
code = ptr; code = ptr;
@ -491,10 +470,6 @@ namespace PpcGen {
void PPCXEmitter::ReserveCodeSpace(u32 bytes) void PPCXEmitter::ReserveCodeSpace(u32 bytes)
{ {
/*
for (u32 i = 0; i < bytes/4; i++)
Write32(0xE1200070); //bkpt 0
*/
for (u32 i = 0; i < bytes/4; i++) for (u32 i = 0; i < bytes/4; i++)
Write32(0x60000000); //nop Write32(0x60000000); //nop
} }

4
Common/ppcEmitter.h
View file

@ -139,7 +139,7 @@ namespace PpcGen
u32 condition; u32 condition;
protected: protected:
// Weite opcode // Write opcode
inline void Write32(u32 value) {*(u32*)code = value; code+=4;} inline void Write32(u32 value) {*(u32*)code = value; code+=4;}
public: public:
@ -230,6 +230,7 @@ namespace PpcGen
// reverse ? // reverse ?
SUBF(Rd, Rb, Ra); SUBF(Rd, Rb, Ra);
} }
// if RCFlags update CR0
void SUBF (PPCReg Rd, PPCReg Ra, PPCReg Rb, int RCFlags = 0); void SUBF (PPCReg Rd, PPCReg Ra, PPCReg Rb, int RCFlags = 0);
void SUBFC (PPCReg Rd, PPCReg Ra, PPCReg Rb); void SUBFC (PPCReg Rd, PPCReg Ra, PPCReg Rb);
@ -304,7 +305,6 @@ namespace PpcGen
}; // class PPCXEmitter }; // class PPCXEmitter
// Everything that needs to generate X86 code should inherit from this.
// You get memory management for free, plus, you can use all the MOV etc functions without // You get memory management for free, plus, you can use all the MOV etc functions without
// having to prefix them with gen-> or something similar. // having to prefix them with gen-> or something similar.
class PPCXCodeBlock : public PPCXEmitter class PPCXCodeBlock : public PPCXEmitter