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Beginning work on disassembler functions.

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Ideally, this would be automated, but it's easier to just do it manually.
This commit is contained in:
Ben Vanik
2013-01-28 21:37:03 -08:00
parent 7b62fa96bd
commit 775c97bf53
6 changed files with 306 additions and 20 deletions
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6
src/cpu/codegen/emit.h
View File

@@ -24,10 +24,14 @@ void RegisterEmitCategoryFPU();
void RegisterEmitCategoryMemory();
#define XEDISASMR(name, opcode, format) int InstrDisasm_##name
#define XEEMITTER(name, opcode, format) int InstrEmit_##name
#define XEREGISTERINSTR(name, opcode) \
RegisterInstrDisassemble(opcode, (InstrDisassembleFn)InstrDisasm_##name); \
RegisterInstrEmit(opcode, (InstrEmitFn)InstrEmit_##name);
#define XEREGISTEREMITTER(name, opcode) \
RegisterInstrEmit(opcode, (void*)InstrEmit_##name)
RegisterInstrEmit(opcode, (InstrEmitFn)InstrEmit_##name);
#define XEINSTRNOTIMPLEMENTED()
//#define XEINSTRNOTIMPLEMENTED XEASSERTALWAYS

27
src/cpu/codegen/emit_alu.cc
View File

@@ -26,6 +26,14 @@ namespace codegen {
// Integer arithmetic (A-3)
XEDISASMR(addx, 0x7C000214, XO )(InstrData& i, InstrDisasm& d) {
d.Init("add",
i.XO.OE ? InstrDisasm::kOE : 0 | i.XO.Rc ? InstrDisasm::kRc : 0);
d.AddRegOperand(InstrRegister::kGPR, i.XO.RT, InstrRegister::kWrite);
d.AddRegOperand(InstrRegister::kGPR, i.XO.RA, InstrRegister::kRead);
d.AddRegOperand(InstrRegister::kGPR, i.XO.RB, InstrRegister::kRead);
return 0;
}
XEEMITTER(addx, 0x7C000214, XO )(FunctionGenerator& g, IRBuilder<>& b, InstrData& i) {
// RD <- (RA) + (RB)
@@ -37,12 +45,13 @@ XEEMITTER(addx, 0x7C000214, XO )(FunctionGenerator& g, IRBuilder<>& b, I
g.gen_module(), Intrinsic::sadd_with_overflow, b.getInt64Ty());
Value* v = b.CreateCall2(sadd_with_overflow,
g.gpr_value(i.XO.RA), g.gpr_value(i.XO.RB));
g.update_gpr_value(i.XO.RT, b.CreateExtractValue(v, 0));
Value* v0 = b.CreateExtractValue(v, 0);
g.update_gpr_value(i.XO.RT, v0);
g.update_xer_with_overflow(b.CreateExtractValue(v, 1));
if (i.XO.Rc) {
// With cr0 update.
g.update_cr_with_cond(0, v, b.getInt64(0), true);
g.update_cr_with_cond(0, v0, b.getInt64(0), true);
}
return 0;
@@ -291,12 +300,13 @@ XEEMITTER(subfx, 0x7C000050, XO )(FunctionGenerator& g, IRBuilder<>& b, I
g.gen_module(), Intrinsic::ssub_with_overflow, b.getInt64Ty());
Value* v = b.CreateCall2(ssub_with_overflow,
g.gpr_value(i.XO.RB), g.gpr_value(i.XO.RA));
g.update_gpr_value(i.XO.RT, b.CreateExtractValue(v, 0));
Value* v0 = b.CreateExtractValue(v, 0);
g.update_gpr_value(i.XO.RT, v0);
g.update_xer_with_overflow(b.CreateExtractValue(v, 1));
if (i.XO.Rc) {
// With cr0 update.
g.update_cr_with_cond(0, v, b.getInt64(0), true);
g.update_cr_with_cond(0, v0, b.getInt64(0), true);
}
return 0;
@@ -342,9 +352,10 @@ XEEMITTER(subfex, 0x7C000110, XO )(FunctionGenerator& g, IRBuilder<>& b, I
Function* uadd_with_overflow = Intrinsic::getDeclaration(
g.gen_module(), Intrinsic::uadd_with_overflow, b.getInt64Ty());
Value* v = b.CreateCall2(uadd_with_overflow,
b.CreateNot(g.gpr_value(i.XO.RA)),
b.CreateNeg(g.gpr_value(i.XO.RA)),
b.CreateAdd(g.gpr_value(i.XO.RB), ca));
g.update_gpr_value(i.XO.RT, b.CreateExtractValue(v, 0));
Value* v0 = b.CreateExtractValue(v, 0);
g.update_gpr_value(i.XO.RT, v0);
if (i.XO.OE) {
// With XER update.
@@ -355,7 +366,7 @@ XEEMITTER(subfex, 0x7C000110, XO )(FunctionGenerator& g, IRBuilder<>& b, I
if (i.XO.Rc) {
// With cr0 update.
g.update_cr_with_cond(0, v, b.getInt64(0), true);
g.update_cr_with_cond(0, v0, b.getInt64(0), true);
}
return 0;
@@ -908,7 +919,7 @@ XEEMITTER(srwx, 0x7C000430, X )(FunctionGenerator& g, IRBuilder<>& b, I
void RegisterEmitCategoryALU() {
XEREGISTEREMITTER(addx, 0x7C000214);
XEREGISTERINSTR(addx, 0x7C000214);
XEREGISTEREMITTER(addcx, 0X7C000014);
XEREGISTEREMITTER(addex, 0x7C000114);
XEREGISTEREMITTER(addi, 0x38000000);

14
src/cpu/codegen/function_generator.cc
View File

@@ -260,7 +260,16 @@ void FunctionGenerator::GenerateBasicBlock(FunctionBlock* block,
b.getInt32(i.code));
continue;
}
printf(" %.8X: %.8X %s\n", ia, i.code, i.type->name);
if (i.type->disassemble) {
ppc::InstrDisasm d;
i.type->disassemble(i, d);
std::string disasm;
d.Dump(disasm);
printf(" %.8X: %.8X %s\n", ia, i.code, disasm.c_str());
} else {
printf(" %.8X: %.8X %s\n", ia, i.code, i.type->name);
}
// TODO(benvanik): debugging information? source/etc?
// builder_>SetCurrentDebugLocation(DebugLoc::get(
@@ -853,7 +862,8 @@ Value* FunctionGenerator::GetMemoryAddress(Value* addr) {
BasicBlock* invalid_bb = BasicBlock::Create(*context_, "", gen_fn_);
BasicBlock* valid_bb = BasicBlock::Create(*context_, "", gen_fn_);
Value* gt = b.CreateICmpUGE(addr, b.getInt64(0x10000000));
// The heap starts at 0x1000 - if we write below that we're boned.
Value* gt = b.CreateICmpUGE(addr, b.getInt64(0x00001000));
b.CreateCondBr(gt, valid_bb, invalid_bb);
b.SetInsertPoint(invalid_bb);