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Diffstat (limited to 'llvm/tools/llvm-ml/Disassembler.cpp')
| -rw-r--r-- | llvm/tools/llvm-ml/Disassembler.cpp | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/llvm/tools/llvm-ml/Disassembler.cpp b/llvm/tools/llvm-ml/Disassembler.cpp deleted file mode 100644 index 08cd5e4..0000000 --- a/llvm/tools/llvm-ml/Disassembler.cpp +++ /dev/null @@ -1,203 +0,0 @@ -//===- Disassembler.cpp - Disassembler for hex strings --------------------===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -// -// This class implements the disassembler of strings of bytes written in -// hexadecimal, from standard input or from a file. -// -//===----------------------------------------------------------------------===// - -#include "Disassembler.h" -#include "llvm/ADT/Triple.h" -#include "llvm/MC/MCAsmInfo.h" -#include "llvm/MC/MCContext.h" -#include "llvm/MC/MCDisassembler/MCDisassembler.h" -#include "llvm/MC/MCInst.h" -#include "llvm/MC/MCRegisterInfo.h" -#include "llvm/MC/MCStreamer.h" -#include "llvm/MC/MCSubtargetInfo.h" -#include "llvm/Support/MemoryBuffer.h" -#include "llvm/Support/SourceMgr.h" -#include "llvm/Support/TargetRegistry.h" -#include "llvm/Support/raw_ostream.h" - -using namespace llvm; - -typedef std::pair<std::vector<unsigned char>, std::vector<const char *>> - ByteArrayTy; - -static bool PrintInsts(const MCDisassembler &DisAsm, const ByteArrayTy &Bytes, - SourceMgr &SM, raw_ostream &Out, MCStreamer &Streamer, - bool InAtomicBlock, const MCSubtargetInfo &STI) { - 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.first.size(); Index += Size) { - MCInst Inst; - - MCDisassembler::DecodeStatus S; - S = DisAsm.getInstruction(Inst, Size, Data.slice(Index), Index, nulls()); - switch (S) { - case MCDisassembler::Fail: - SM.PrintMessage(SMLoc::getFromPointer(Bytes.second[Index]), - SourceMgr::DK_Warning, "invalid instruction encoding"); - // Don't try to resynchronise the stream in a block - if (InAtomicBlock) - return true; - - if (Size == 0) - Size = 1; // skip illegible bytes - - break; - - case MCDisassembler::SoftFail: - SM.PrintMessage(SMLoc::getFromPointer(Bytes.second[Index]), - SourceMgr::DK_Warning, - "potentially undefined instruction encoding"); - LLVM_FALLTHROUGH; - - case MCDisassembler::Success: - Streamer.EmitInstruction(Inst, STI); - break; - } - } - - return false; -} - -static bool SkipToToken(StringRef &Str) { - for (;;) { - if (Str.empty()) - return false; - - // Strip horizontal whitespace and commas. - if (size_t Pos = Str.find_first_not_of(" \t\r\n,")) { - Str = Str.substr(Pos); - continue; - } - - // 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')); - continue; - } - return true; - } -} - -static bool ByteArrayFromString(ByteArrayTy &ByteArray, StringRef &Str, - SourceMgr &SM) { - while (SkipToToken(Str)) { - // Handled by higher level - if (Str[0] == '[' || Str[0] == ']') - return false; - - // Get the current token. - size_t Next = Str.find_first_of(" \t\n\r,#[]"); - StringRef Value = Str.substr(0, Next); - - // Convert to a byte and add to the byte vector. - unsigned ByteVal; - if (Value.getAsInteger(0, ByteVal) || ByteVal > 255) { - // If we have an error, print it and skip to the end of line. - SM.PrintMessage(SMLoc::getFromPointer(Value.data()), SourceMgr::DK_Error, - "invalid input token"); - Str = Str.substr(Str.find('\n')); - ByteArray.first.clear(); - ByteArray.second.clear(); - continue; - } - - ByteArray.first.push_back(ByteVal); - ByteArray.second.push_back(Value.data()); - Str = Str.substr(Next); - } - - return false; -} - -int Disassembler::disassemble(const Target &T, const std::string &Triple, - MCSubtargetInfo &STI, MCStreamer &Streamer, - MemoryBuffer &Buffer, SourceMgr &SM, - raw_ostream &Out) { - std::unique_ptr<const MCRegisterInfo> MRI(T.createMCRegInfo(Triple)); - if (!MRI) { - errs() << "error: no register info for target " << Triple << "\n"; - return -1; - } - - MCTargetOptions MCOptions; - std::unique_ptr<const MCAsmInfo> MAI( - T.createMCAsmInfo(*MRI, Triple, MCOptions)); - if (!MAI) { - errs() << "error: no assembly info for target " << Triple << "\n"; - return -1; - } - - // Set up the MCContext for creating symbols and MCExpr's. - MCContext Ctx(MAI.get(), MRI.get(), nullptr); - - std::unique_ptr<const MCDisassembler> DisAsm( - T.createMCDisassembler(STI, Ctx)); - if (!DisAsm) { - errs() << "error: no disassembler for target " << Triple << "\n"; - return -1; - } - - // Set up initial section manually here - Streamer.InitSections(false); - - bool ErrorOccurred = false; - - // Convert the input to a vector for disassembly. - ByteArrayTy ByteArray; - StringRef Str = Buffer.getBuffer(); - bool InAtomicBlock = false; - - while (SkipToToken(Str)) { - ByteArray.first.clear(); - ByteArray.second.clear(); - - if (Str[0] == '[') { - if (InAtomicBlock) { - SM.PrintMessage(SMLoc::getFromPointer(Str.data()), SourceMgr::DK_Error, - "nested atomic blocks make no sense"); - ErrorOccurred = true; - } - InAtomicBlock = true; - Str = Str.drop_front(); - continue; - } else if (Str[0] == ']') { - if (!InAtomicBlock) { - SM.PrintMessage(SMLoc::getFromPointer(Str.data()), SourceMgr::DK_Error, - "attempt to close atomic block without opening"); - ErrorOccurred = true; - } - InAtomicBlock = false; - Str = Str.drop_front(); - continue; - } - - // It's a real token, get the bytes and emit them - ErrorOccurred |= ByteArrayFromString(ByteArray, Str, SM); - - if (!ByteArray.first.empty()) - ErrorOccurred |= - PrintInsts(*DisAsm, ByteArray, SM, Out, Streamer, InAtomicBlock, STI); - } - - if (InAtomicBlock) { - SM.PrintMessage(SMLoc::getFromPointer(Str.data()), SourceMgr::DK_Error, - "unclosed atomic block"); - ErrorOccurred = true; - } - - return ErrorOccurred; -} |