-//===-- 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/MCRegisterInfo.h"
#include "llvm/Support/MemoryObject.h"
+#include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/ErrorHandling.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 successfull 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();
-
// Get the target.
std::string Error;
const Target *TheTarget = TargetRegistry::lookupTarget(TripleName, Error);
assert(TheTarget && "Unable to create target!");
// Get the assembler info needed to setup the MCContext.
- const MCAsmInfo *MAI = TheTarget->createAsmInfo(TripleName);
+ const MCAsmInfo *MAI = TheTarget->createMCAsmInfo(TripleName);
assert(MAI && "Unable to create target asm info!");
+ const MCRegisterInfo *MRI = TheTarget->createMCRegInfo(TripleName);
+ assert(MRI && "Unable to create target register info!");
+
// Package up features to be passed to target/subtarget
std::string FeaturesStr;
+ std::string CPU;
- // 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(TripleName, CPU,
+ FeaturesStr);
+ assert(STI && "Unable to create subtarget info!");
// Set up the MCContext for creating symbols and MCExpr's.
- MCContext *Ctx = new MCContext(*MAI, tai);
+ MCContext *Ctx = new MCContext(*MAI, *MRI, 0);
assert(Ctx && "Unable to create MCContext!");
// Set up disassembler.
- MCDisassembler *DisAsm = TheTarget->createMCDisassembler();
+ MCDisassembler *DisAsm = TheTarget->createMCDisassembler(*STI);
assert(DisAsm && "Unable to create disassembler!");
- DisAsm->setupForSymbolicDisassembly(GetOpInfo, DisInfo, Ctx);
+ DisAsm->setupForSymbolicDisassembly(GetOpInfo, SymbolLookUp, DisInfo, Ctx);
// Set up the instruction printer.
int AsmPrinterVariant = MAI->getAssemblerDialect();
- MCInstPrinter *IP = TheTarget->createMCInstPrinter(*TM, AsmPrinterVariant,
- *MAI);
+ MCInstPrinter *IP = TheTarget->createMCInstPrinter(AsmPrinterVariant,
+ *MAI, *STI);
assert(IP && "Unable to create instruction printer!");
LLVMDisasmContext *DC = new LLVMDisasmContext(TripleName, DisInfo, TagType,
GetOpInfo, SymbolLookUp,
- TheTarget, MAI, TM, tai, Ctx,
- DisAsm, IP);
+ TheTarget, MAI, MRI,
+ Ctx, DisAsm, IP);
assert(DC && "Allocation failure!");
+
return DC;
}
// The memory object created by LLVMDisasmInstruction().
//
class DisasmMemoryObject : public MemoryObject {
-private:
uint8_t *Bytes;
uint64_t Size;
uint64_t BasePC;
Bytes(bytes), Size(size), BasePC(basePC) {}
uint64_t getBase() const { return BasePC; }
- uint64_t getExtent() const { return Size; }
+ uint64_t getExtent() { return Size; }
- int readByte(uint64_t Addr, uint8_t *Byte) const {
+ int readByte(uint64_t Addr, uint8_t *Byte) {
if (Addr - BasePC >= Size)
return -1;
*Byte = Bytes[Addr - 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();
-#ifdef __cplusplus
+ 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!");
}
-#endif // __cplusplus
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