本文整理汇总了C++中codeGen::emitter方法的典型用法代码示例。如果您正苦于以下问题：C++ codeGen::emitter方法的具体用法？C++ codeGen::emitter怎么用？C++ codeGen::emitter使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类codeGen的用法示例。
在下文中一共展示了codeGen::emitter方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: apply
bool IPPatch::apply(codeGen &gen, CodeBuffer *) {
relocation_cerr << "\t\t IPPatch::apply" << endl;
// We want to generate addr (as modified) into the appropriate location.
// TODO get rid of the #ifdef here...
#if defined(arch_x86) || defined(arch_x86_64)
GET_PTR(newInsn, gen);
*newInsn = 0xE8;
newInsn++;
unsigned int *temp = (uint32_t *) newInsn;
*temp = 0;
newInsn += sizeof(uint32_t);
SET_PTR(newInsn, gen);
Address offset = addr - gen.currAddr() + insn->size();
REGET_PTR(newInsn, gen);
*newInsn = 0x81;
newInsn++;
*newInsn = 0x04;
newInsn++;
*newInsn = 0x24;
newInsn++;
temp = (uint32_t *) newInsn;
*temp = offset;
newInsn += sizeof(uint32_t);
if (type == Reg) {
assert(reg != (Register) -1);
// pop...
*newInsn++ = static_cast<unsigned char>(0x58 + reg); // POP family
}
SET_PTR(newInsn, gen);
#else
// For dynamic we can do this in-line
assert(gen.addrSpace()->edit());
// Must be in LR
if (reg == -1) reg = registerSpace::lr;
assert(reg == registerSpace::lr);
instPoint *point = gen.point();
// If we do not have a point then we have to invent one
if (!point ||
(point->type() != instPoint::PreInsn &&
point->insnAddr() != addr)) {
point = instPoint::preInsn(func, block, addr, insn, true);
}
assert(point);
registerSpace *rs = registerSpace::actualRegSpace(point);
gen.setRegisterSpace(rs);
int stackSize = 0;
pdvector<Register> freeReg;
pdvector<Register> excludeReg;
Register scratchPCReg = gen.rs()->getScratchRegister(gen, true);
excludeReg.push_back(scratchPCReg);
Register scratchReg = gen.rs()->getScratchRegister(gen, excludeReg, true);
if ((scratchPCReg == REG_NULL) && (scratchReg == REG_NULL)) {
excludeReg.clear();
stackSize = insnCodeGen::createStackFrame(gen, 2, freeReg, excludeReg);
assert(stackSize == 2);
scratchPCReg = freeReg[0];
scratchReg = freeReg[1];
} else if (scratchReg == REG_NULL && scratchPCReg != REG_NULL) {
stackSize = insnCodeGen::createStackFrame(gen, 1, freeReg, excludeReg);
assert(stackSize == 1);
scratchReg = freeReg[0];
}
//scratchPCReg == NULL && scratchReg != NULL - not a valid case
//since getScratchRegister works in order
// relocaAddr may have moved if we added instructions to setup a new stack frame
Address newRelocAddr = gen.currAddr();
insnCodeGen::generateBranch(gen, gen.currAddr(), gen.currAddr()+4, true); // blrl
insnCodeGen::generateMoveFromLR(gen, scratchPCReg); // mflr
Address varOffset = addr - newRelocAddr;
gen.emitter()->emitCallRelative(scratchReg, varOffset, scratchPCReg, gen);
insnCodeGen::generateMoveToLR(gen, scratchReg);
if( stackSize > 0) {
insnCodeGen::removeStackFrame(gen);
}
#endif
return true;
}