diff options
Diffstat (limited to 'tools/llvm-mc/Disassembler.cpp')
-rw-r--r-- | tools/llvm-mc/Disassembler.cpp | 70 |
1 files changed, 24 insertions, 46 deletions
diff --git a/tools/llvm-mc/Disassembler.cpp b/tools/llvm-mc/Disassembler.cpp index 9367590..95d146a 100644 --- a/tools/llvm-mc/Disassembler.cpp +++ b/tools/llvm-mc/Disassembler.cpp @@ -22,33 +22,14 @@ #include "llvm/MC/MCStreamer.h" #include "llvm/MC/MCSubtargetInfo.h" #include "llvm/Support/MemoryBuffer.h" -#include "llvm/Support/MemoryObject.h" #include "llvm/Support/SourceMgr.h" #include "llvm/Support/TargetRegistry.h" #include "llvm/Support/raw_ostream.h" using namespace llvm; -typedef std::vector<std::pair<unsigned char, const char*> > ByteArrayTy; - -namespace { -class VectorMemoryObject : public MemoryObject { -private: - const ByteArrayTy &Bytes; -public: - VectorMemoryObject(const ByteArrayTy &bytes) : Bytes(bytes) {} - - uint64_t getBase() const override { return 0; } - uint64_t getExtent() const override { return Bytes.size(); } - - int readByte(uint64_t Addr, uint8_t *Byte) const override { - if (Addr >= getExtent()) - return -1; - *Byte = Bytes[Addr].first; - return 0; - } -}; -} +typedef std::pair<std::vector<unsigned char>, std::vector<const char *>> + ByteArrayTy; static bool PrintInsts(const MCDisassembler &DisAsm, const ByteArrayTy &Bytes, @@ -56,21 +37,21 @@ static bool PrintInsts(const MCDisassembler &DisAsm, MCStreamer &Streamer, bool InAtomicBlock, const MCSubtargetInfo &STI) { // Wrap the vector in a MemoryObject. - VectorMemoryObject memoryObject(Bytes); + ArrayRef<uint8_t> Data(Bytes.first.data(), Bytes.first.size()); // Disassemble it to strings. uint64_t Size; uint64_t Index; - for (Index = 0; Index < Bytes.size(); Index += Size) { + for (Index = 0; Index < Bytes.first.size(); Index += Size) { MCInst Inst; MCDisassembler::DecodeStatus S; - S = DisAsm.getInstruction(Inst, Size, memoryObject, Index, + S = DisAsm.getInstruction(Inst, Size, Data.slice(Index), Index, /*REMOVE*/ nulls(), nulls()); switch (S) { case MCDisassembler::Fail: - SM.PrintMessage(SMLoc::getFromPointer(Bytes[Index].second), + SM.PrintMessage(SMLoc::getFromPointer(Bytes.second[Index]), SourceMgr::DK_Warning, "invalid instruction encoding"); // Don't try to resynchronise the stream in a block @@ -83,7 +64,7 @@ static bool PrintInsts(const MCDisassembler &DisAsm, break; case MCDisassembler::SoftFail: - SM.PrintMessage(SMLoc::getFromPointer(Bytes[Index].second), + SM.PrintMessage(SMLoc::getFromPointer(Bytes.second[Index]), SourceMgr::DK_Warning, "potentially undefined instruction encoding"); // Fall through @@ -98,29 +79,23 @@ static bool PrintInsts(const MCDisassembler &DisAsm, } static bool SkipToToken(StringRef &Str) { - while (!Str.empty() && Str.find_first_not_of(" \t\r\n#,") != 0) { + for (;;) { + if (Str.empty()) + return false; + // Strip horizontal whitespace and commas. - if (size_t Pos = Str.find_first_not_of(" \t\r,")) { + if (size_t Pos = Str.find_first_not_of(" \t\r\n,")) { Str = Str.substr(Pos); + continue; } - // If this is the end of a line or start of a comment, remove the rest of - // the line. - if (Str[0] == '\n' || Str[0] == '#') { - // Strip to the end of line if we already processed any bytes on this - // line. This strips the comment and/or the \n. - if (Str[0] == '\n') { - Str = Str.substr(1); - } else { + // If this is the start of a comment, remove the rest of the line. + if (Str[0] == '#') { Str = Str.substr(Str.find_first_of('\n')); - if (!Str.empty()) - Str = Str.substr(1); - } continue; } + return true; } - - return !Str.empty(); } @@ -143,11 +118,13 @@ static bool ByteArrayFromString(ByteArrayTy &ByteArray, SM.PrintMessage(SMLoc::getFromPointer(Value.data()), SourceMgr::DK_Error, "invalid input token"); Str = Str.substr(Str.find('\n')); - ByteArray.clear(); + ByteArray.first.clear(); + ByteArray.second.clear(); continue; } - ByteArray.push_back(std::make_pair((unsigned char)ByteVal, Value.data())); + ByteArray.first.push_back(ByteVal); + ByteArray.second.push_back(Value.data()); Str = Str.substr(Next); } @@ -185,7 +162,7 @@ int Disassembler::disassemble(const Target &T, } // Set up initial section manually here - Streamer.InitSections(); + Streamer.InitSections(false); bool ErrorOccurred = false; @@ -195,7 +172,8 @@ int Disassembler::disassemble(const Target &T, bool InAtomicBlock = false; while (SkipToToken(Str)) { - ByteArray.clear(); + ByteArray.first.clear(); + ByteArray.second.clear(); if (Str[0] == '[') { if (InAtomicBlock) { @@ -220,7 +198,7 @@ int Disassembler::disassemble(const Target &T, // It's a real token, get the bytes and emit them ErrorOccurred |= ByteArrayFromString(ByteArray, Str, SM); - if (!ByteArray.empty()) + if (!ByteArray.first.empty()) ErrorOccurred |= PrintInsts(*DisAsm, ByteArray, SM, Out, Streamer, InAtomicBlock, STI); } |