// LLVMCreateDisasm() creates a disassembler for the TripleName. Symbolic
// disassembly is supported by passing a block of information in the DisInfo
// parameter and specifying the TagType and callback functions as described in
// the header llvm-c/Disassembler.h . The pointer to the block and the
// functions can all be passed as NULL. If successful, this returns a
// disassembler context. If not, it returns NULL.
//
LLVMDisasmContextRef LLVMCreateDisasmCPU(const char *Triple, const char *CPU,
void *DisInfo, int TagType,
LLVMOpInfoCallback GetOpInfo,
LLVMSymbolLookupCallback SymbolLookUp){
// Get the target.
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(Triple, Error);
if (!TheTarget)
return 0;
const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(Triple);
if (!MRI)
return 0;
// Get the assembler info needed to setup the MCContext.
const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(*MRI, Triple);
if (!MAI)
return 0;
const MCInstrInfo *MII = TheTarget->createMCInstrInfo();
if (!MII)
return 0;
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
const MCSubtargetInfo *STI = TheTarget->createMCSubtargetInfo(Triple, CPU,
FeaturesStr);
if (!STI)
return 0;
// Set up the MCContext for creating symbols and MCExpr's.
MCContext *Ctx = new MCContext(MAI, MRI, 0);
if (!Ctx)
return 0;
// Set up disassembler.
MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI);
if (!DisAsm)
return 0;
OwningPtr<MCRelocationInfo> RelInfo(
TheTarget->createMCRelocationInfo(Triple, *Ctx));
if (!RelInfo)
return 0;
OwningPtr<MCSymbolizer> Symbolizer(
TheTarget->createMCSymbolizer(Triple, GetOpInfo, SymbolLookUp, DisInfo,
Ctx, RelInfo.take()));
DisAsm->setSymbolizer(Symbolizer);
DisAsm->setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo,
Ctx, RelInfo);
// Set up the instruction printer.
int AsmPrinterVariant = MAI->getAssemblerDialect();
MCInstPrinter *IP = TheTarget->createMCInstPrinter(AsmPrinterVariant,
*MAI, *MII, *MRI, *STI);
if (!IP)
return 0;
LLVMDisasmContext *DC = new LLVMDisasmContext(Triple, DisInfo, TagType,
GetOpInfo, SymbolLookUp,
TheTarget, MAI, MRI,
STI, MII, Ctx, DisAsm, IP);
if (!DC)
return 0;
return DC;
}
// LLVMCreateDisasm() creates a disassembler for the TripleName. Symbolic
// disassembly is supported by passing a block of information in the DisInfo
// parameter and specifying the TagType and callback functions as described in
// the header llvm-c/Disassembler.h . The pointer to the block and the
// functions can all be passed as NULL. If successful, this returns a
// disassembler context. If not, it returns NULL.
//
LLVMDisasmContextRef
LLVMCreateDisasmCPUFeatures(const char *TT, const char *CPU,
const char *Features, void *DisInfo, int TagType,
LLVMOpInfoCallback GetOpInfo,
LLVMSymbolLookupCallback SymbolLookUp) {
// Get the target.
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TT, Error);
if (!TheTarget)
return nullptr;
const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(TT);
if (!MRI)
return nullptr;
// Get the assembler info needed to setup the MCContext.
const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(*MRI, TT);
if (!MAI)
return nullptr;
const MCInstrInfo *MII = TheTarget->createMCInstrInfo();
if (!MII)
return nullptr;
const MCSubtargetInfo *STI =
TheTarget->createMCSubtargetInfo(TT, CPU, Features);
if (!STI)
return nullptr;
// Set up the MCContext for creating symbols and MCExpr's.
MCContext *Ctx = new MCContext(MAI, MRI, nullptr);
if (!Ctx)
return nullptr;
// Set up disassembler.
MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI, *Ctx);
if (!DisAsm)
return nullptr;
std::unique_ptr<MCRelocationInfo> RelInfo(
TheTarget->createMCRelocationInfo(TT, *Ctx));
if (!RelInfo)
return nullptr;
std::unique_ptr<MCSymbolizer> Symbolizer(TheTarget->createMCSymbolizer(
TT, GetOpInfo, SymbolLookUp, DisInfo, Ctx, std::move(RelInfo)));
DisAsm->setSymbolizer(std::move(Symbolizer));
// Set up the instruction printer.
int AsmPrinterVariant = MAI->getAssemblerDialect();
MCInstPrinter *IP = TheTarget->createMCInstPrinter(
Triple(TT), AsmPrinterVariant, *MAI, *MII, *MRI);
if (!IP)
return nullptr;
LLVMDisasmContext *DC =
new LLVMDisasmContext(TT, DisInfo, TagType, GetOpInfo, SymbolLookUp,
TheTarget, MAI, MRI, STI, MII, Ctx, DisAsm, IP);
if (!DC)
return nullptr;
DC->setCPU(CPU);
return DC;
}