-//===-- lib/MC/Disassembler.cpp - Disassembler Public C Interface -*- C -*-===//
+//===-- lib/MC/Disassembler.cpp - Disassembler Public C Interface ---------===//
//
// The LLVM Compiler Infrastructure
//
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
+
#include "Disassembler.h"
-#include <stdio.h>
#include "llvm-c/Disassembler.h"
-
-#include <string>
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCDisassembler.h"
#include "llvm/MC/MCInst.h"
#include "llvm/MC/MCInstPrinter.h"
-#include "llvm/MC/MCContext.h"
-#include "llvm/Target/TargetRegistry.h"
-#include "llvm/Target/TargetAsmInfo.h" // FIXME.
-#include "llvm/Target/TargetMachine.h" // FIXME.
-#include "llvm/Target/TargetSelect.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCRelocationInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/MC/MCSymbolizer.h"
+#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/TargetRegistry.h"
namespace llvm {
class Target;
} // namespace llvm
using namespace llvm;
-#ifdef __cplusplus
-extern "C" {
-#endif // __cplusplus
-
-//
// LLVMCreateDisasm() creates a disassembler for the TripleName. Symbolic
// disassembly is supported by passing a block of information in the DisInfo
-// parameter and specifing the TagType and call back functions as described in
+// 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.
+// functions can all be passed as NULL. If successful, this returns a
+// disassembler context. If not, it returns NULL.
//
-LLVMDisasmContextRef LLVMCreateDisasm(const char *TripleName, void *DisInfo,
- int TagType, LLVMOpInfoCallback GetOpInfo,
- LLVMSymbolLookupCallback SymbolLookUp) {
- // Initialize targets and assembly printers/parsers.
- llvm::InitializeAllTargetInfos();
- // FIXME: We shouldn't need to initialize the Target(Machine)s.
- llvm::InitializeAllTargets();
- llvm::InitializeAllAsmPrinters();
- llvm::InitializeAllAsmParsers();
- llvm::InitializeAllDisassemblers();
-
+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(TripleName, Error);
- assert(TheTarget && "Unable to create target!");
+ 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->createAsmInfo(TripleName);
- assert(MAI && "Unable to create target asm info!");
+ 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;
- // FIXME: We shouldn't need to do this (and link in codegen).
- // When we split this out, we should do it in a way that makes
- // it straightforward to switch subtargets on the fly.
- TargetMachine *TM = TheTarget->createTargetMachine(TripleName, FeaturesStr);
- assert(TM && "Unable to create target machine!");
-
- // Get the target assembler info needed to setup the context.
- const TargetAsmInfo *tai = new TargetAsmInfo(*TM);
- assert(tai && "Unable to create target assembler!");
+ 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, tai);
- assert(Ctx && "Unable to create MCContext!");
+ MCContext *Ctx = new MCContext(MAI, MRI, 0);
+ if (!Ctx)
+ return 0;
// Set up disassembler.
- MCDisassembler *DisAsm = TheTarget->createMCDisassembler();
- assert(DisAsm && "Unable to create disassembler!");
- DisAsm->setupForSymbolicDisassembly(GetOpInfo, DisInfo, Ctx);
+ 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(*TM, AsmPrinterVariant,
- *MAI);
- assert(IP && "Unable to create instruction printer!");
+ MCInstPrinter *IP = TheTarget->createMCInstPrinter(AsmPrinterVariant,
+ *MAI, *MII, *MRI, *STI);
+ if (!IP)
+ return 0;
- LLVMDisasmContext *DC = new LLVMDisasmContext(TripleName, DisInfo, TagType,
+ LLVMDisasmContext *DC = new LLVMDisasmContext(Triple, DisInfo, TagType,
GetOpInfo, SymbolLookUp,
- TheTarget, MAI, TM, tai, Ctx,
- DisAsm, IP);
- assert(DC && "Allocation failure!");
+ TheTarget, MAI, MRI,
+ STI, MII, Ctx, DisAsm, IP);
+ if (!DC)
+ return 0;
+
return DC;
}
+LLVMDisasmContextRef LLVMCreateDisasm(const char *Triple, void *DisInfo,
+ int TagType, LLVMOpInfoCallback GetOpInfo,
+ LLVMSymbolLookupCallback SymbolLookUp) {
+ return LLVMCreateDisasmCPU(Triple, "", DisInfo, TagType, GetOpInfo,
+ SymbolLookUp);
+}
+
//
// LLVMDisasmDispose() disposes of the disassembler specified by the context.
//
// The memory object created by LLVMDisasmInstruction().
//
class DisasmMemoryObject : public MemoryObject {
-private:
uint8_t *Bytes;
uint64_t Size;
uint64_t BasePC;
return 0;
}
};
-} // namespace
+} // end anonymous namespace
//
// LLVMDisasmInstruction() disassembles a single instruction using the
MCInst Inst;
const MCDisassembler *DisAsm = DC->getDisAsm();
MCInstPrinter *IP = DC->getIP();
- if (!DisAsm->getInstruction(Inst, Size, MemoryObject, PC, /*REMOVE*/ nulls()))
+ MCDisassembler::DecodeStatus S;
+ S = DisAsm->getInstruction(Inst, Size, MemoryObject, PC,
+ /*REMOVE*/ nulls(), DC->CommentStream);
+ switch (S) {
+ case MCDisassembler::Fail:
+ case MCDisassembler::SoftFail:
+ // FIXME: Do something different for soft failure modes?
return 0;
- std::string InsnStr;
- raw_string_ostream OS(InsnStr);
- IP->printInst(&Inst, OS);
- OS.flush();
+ case MCDisassembler::Success: {
+ DC->CommentStream.flush();
+ StringRef Comments = DC->CommentsToEmit.str();
- size_t OutputSize = std::min(OutStringSize-1, InsnStr.size());
- std::memcpy(OutString, InsnStr.data(), OutputSize);
- OutString[OutputSize] = '\0'; // Terminate string.
+ SmallVector<char, 64> InsnStr;
+ raw_svector_ostream OS(InsnStr);
+ IP->printInst(&Inst, OS, Comments);
+ OS.flush();
- return Size;
+ // Tell the comment stream that the vector changed underneath it.
+ DC->CommentsToEmit.clear();
+ DC->CommentStream.resync();
+
+ assert(OutStringSize != 0 && "Output buffer cannot be zero size");
+ size_t OutputSize = std::min(OutStringSize-1, InsnStr.size());
+ std::memcpy(OutString, InsnStr.data(), OutputSize);
+ OutString[OutputSize] = '\0'; // Terminate string.
+
+ return Size;
+ }
+ }
+ llvm_unreachable("Invalid DecodeStatus!");
}
-#ifdef __cplusplus
+//
+// LLVMSetDisasmOptions() sets the disassembler's options. It returns 1 if it
+// can set all the Options and 0 otherwise.
+//
+int LLVMSetDisasmOptions(LLVMDisasmContextRef DCR, uint64_t Options){
+ if (Options & LLVMDisassembler_Option_UseMarkup){
+ LLVMDisasmContext *DC = (LLVMDisasmContext *)DCR;
+ MCInstPrinter *IP = DC->getIP();
+ IP->setUseMarkup(1);
+ Options &= ~LLVMDisassembler_Option_UseMarkup;
+ }
+ if (Options & LLVMDisassembler_Option_PrintImmHex){
+ LLVMDisasmContext *DC = (LLVMDisasmContext *)DCR;
+ MCInstPrinter *IP = DC->getIP();
+ IP->setPrintImmHex(1);
+ Options &= ~LLVMDisassembler_Option_PrintImmHex;
+ }
+ if (Options & LLVMDisassembler_Option_AsmPrinterVariant){
+ LLVMDisasmContext *DC = (LLVMDisasmContext *)DCR;
+ // Try to set up the new instruction printer.
+ const MCAsmInfo *MAI = DC->getAsmInfo();
+ const MCInstrInfo *MII = DC->getInstrInfo();
+ const MCRegisterInfo *MRI = DC->getRegisterInfo();
+ const MCSubtargetInfo *STI = DC->getSubtargetInfo();
+ int AsmPrinterVariant = MAI->getAssemblerDialect();
+ AsmPrinterVariant = AsmPrinterVariant == 0 ? 1 : 0;
+ MCInstPrinter *IP = DC->getTarget()->createMCInstPrinter(
+ AsmPrinterVariant, *MAI, *MII, *MRI, *STI);
+ if (IP) {
+ DC->setIP(IP);
+ Options &= ~LLVMDisassembler_Option_AsmPrinterVariant;
+ }
+ }
+ return (Options == 0);
}
-#endif // __cplusplus
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