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-rw-r--r--tools/llvm-mc/Disassembler.cpp271
1 files changed, 234 insertions, 37 deletions
diff --git a/tools/llvm-mc/Disassembler.cpp b/tools/llvm-mc/Disassembler.cpp
index 9fe07909284c..9234a14bc1bf 100644
--- a/tools/llvm-mc/Disassembler.cpp
+++ b/tools/llvm-mc/Disassembler.cpp
@@ -15,6 +15,7 @@
#include "Disassembler.h"
#include "llvm/ADT/OwningPtr.h"
+#include "llvm/ADT/Triple.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCDisassembler.h"
#include "llvm/MC/MCInst.h"
@@ -24,6 +25,9 @@
#include "llvm/Support/MemoryObject.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/SourceMgr.h"
+
+#include "llvm-c/EnhancedDisassembly.h"
+
using namespace llvm;
typedef std::vector<std::pair<unsigned char, const char*> > ByteArrayTy;
@@ -64,8 +68,7 @@ static bool PrintInsts(const MCDisassembler &DisAsm,
/*REMOVE*/ nulls())) {
Printer.printInst(&Inst, outs());
outs() << "\n";
- }
- else {
+ } else {
SM.PrintMessage(SMLoc::getFromPointer(Bytes[Index].second),
"invalid instruction encoding", "warning");
if (Size == 0)
@@ -76,37 +79,9 @@ static bool PrintInsts(const MCDisassembler &DisAsm,
return false;
}
-int Disassembler::disassemble(const Target &T, const std::string &Triple,
- MemoryBuffer &Buffer) {
- // Set up disassembler.
- OwningPtr<const MCAsmInfo> AsmInfo(T.createAsmInfo(Triple));
-
- if (!AsmInfo) {
- errs() << "error: no assembly info for target " << Triple << "\n";
- return -1;
- }
-
- OwningPtr<const MCDisassembler> DisAsm(T.createMCDisassembler());
- if (!DisAsm) {
- errs() << "error: no disassembler for target " << Triple << "\n";
- return -1;
- }
-
- OwningPtr<MCInstPrinter> IP(T.createMCInstPrinter(0, *AsmInfo));
- if (!IP) {
- errs() << "error: no instruction printer for target " << Triple << '\n';
- return -1;
- }
-
- bool ErrorOccurred = false;
-
- SourceMgr SM;
- SM.AddNewSourceBuffer(&Buffer, SMLoc());
-
- // Convert the input to a vector for disassembly.
- ByteArrayTy ByteArray;
-
- StringRef Str = Buffer.getBuffer();
+static bool ByteArrayFromString(ByteArrayTy &ByteArray,
+ StringRef &Str,
+ SourceMgr &SM) {
while (!Str.empty()) {
// Strip horizontal whitespace.
if (size_t Pos = Str.find_first_not_of(" \t\r")) {
@@ -119,9 +94,9 @@ int Disassembler::disassemble(const Target &T, const std::string &Triple,
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')
+ if (Str[0] == '\n') {
Str = Str.substr(1);
- else {
+ } else {
Str = Str.substr(Str.find_first_of('\n'));
if (!Str.empty())
Str = Str.substr(1);
@@ -138,8 +113,7 @@ int Disassembler::disassemble(const Target &T, const std::string &Triple,
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()),
- "invalid input token", "error");
- ErrorOccurred = true;
+ "invalid input token", "error");
Str = Str.substr(Str.find('\n'));
ByteArray.clear();
continue;
@@ -149,8 +123,231 @@ int Disassembler::disassemble(const Target &T, const std::string &Triple,
Str = Str.substr(Next);
}
+ return false;
+}
+
+int Disassembler::disassemble(const Target &T, const std::string &Triple,
+ MemoryBuffer &Buffer) {
+ // Set up disassembler.
+ OwningPtr<const MCAsmInfo> AsmInfo(T.createAsmInfo(Triple));
+
+ if (!AsmInfo) {
+ errs() << "error: no assembly info for target " << Triple << "\n";
+ return -1;
+ }
+
+ OwningPtr<const MCDisassembler> DisAsm(T.createMCDisassembler());
+ if (!DisAsm) {
+ errs() << "error: no disassembler for target " << Triple << "\n";
+ return -1;
+ }
+
+ int AsmPrinterVariant = AsmInfo->getAssemblerDialect();
+ OwningPtr<MCInstPrinter> IP(T.createMCInstPrinter(AsmPrinterVariant,
+ *AsmInfo));
+ if (!IP) {
+ errs() << "error: no instruction printer for target " << Triple << '\n';
+ return -1;
+ }
+
+ bool ErrorOccurred = false;
+
+ SourceMgr SM;
+ SM.AddNewSourceBuffer(&Buffer, SMLoc());
+
+ // Convert the input to a vector for disassembly.
+ ByteArrayTy ByteArray;
+ StringRef Str = Buffer.getBuffer();
+
+ ErrorOccurred |= ByteArrayFromString(ByteArray, Str, SM);
+
if (!ByteArray.empty())
ErrorOccurred |= PrintInsts(*DisAsm, *IP, ByteArray, SM);
return ErrorOccurred;
}
+
+static int byteArrayReader(uint8_t *B, uint64_t A, void *Arg) {
+ ByteArrayTy &ByteArray = *((ByteArrayTy*)Arg);
+
+ if (A >= ByteArray.size())
+ return -1;
+
+ *B = ByteArray[A].first;
+
+ return 0;
+}
+
+static int verboseEvaluator(uint64_t *V, unsigned R, void *Arg) {
+ EDDisassemblerRef &disassembler = *((EDDisassemblerRef*)Arg);
+
+ const char *regName;
+
+ if (!EDGetRegisterName(&regName,
+ disassembler,
+ R))
+ outs() << "[" << regName << "/" << R << "]";
+ if (EDRegisterIsStackPointer(disassembler, R))
+ outs() << "(sp)";
+ if (EDRegisterIsProgramCounter(disassembler, R))
+ outs() << "(pc)";
+
+ *V = 0;
+
+ return 0;
+}
+
+int Disassembler::disassembleEnhanced(const std::string &TS,
+ MemoryBuffer &Buffer) {
+ ByteArrayTy ByteArray;
+ StringRef Str = Buffer.getBuffer();
+ SourceMgr SM;
+
+ SM.AddNewSourceBuffer(&Buffer, SMLoc());
+
+ if (ByteArrayFromString(ByteArray, Str, SM)) {
+ return -1;
+ }
+
+ EDDisassemblerRef disassembler;
+
+ Triple T(TS);
+ EDAssemblySyntax_t AS;
+
+ switch (T.getArch()) {
+ default:
+ errs() << "error: no default assembly syntax for " << TS.c_str() << "\n";
+ return -1;
+ case Triple::arm:
+ case Triple::thumb:
+ AS = kEDAssemblySyntaxARMUAL;
+ break;
+ case Triple::x86:
+ case Triple::x86_64:
+ AS = kEDAssemblySyntaxX86ATT;
+ break;
+ }
+
+ if (EDGetDisassembler(&disassembler,
+ TS.c_str(),
+ AS)) {
+ errs() << "error: couldn't get disassembler for " << TS.c_str() << "\n";
+ return -1;
+ }
+
+ EDInstRef inst;
+
+ if (EDCreateInsts(&inst, 1, disassembler, byteArrayReader, 0,&ByteArray)
+ != 1) {
+ errs() << "error: Didn't get an instruction\n";
+ return -1;
+ }
+
+ int numTokens = EDNumTokens(inst);
+
+ if (numTokens < 0) {
+ errs() << "error: Couldn't count the instruction's tokens\n";
+ return -1;
+ }
+
+ int tokenIndex;
+
+ for (tokenIndex = 0; tokenIndex < numTokens; ++tokenIndex) {
+ EDTokenRef token;
+
+ if (EDGetToken(&token, inst, tokenIndex)) {
+ errs() << "error: Couldn't get token\n";
+ return -1;
+ }
+
+ const char *buf;
+
+ if (EDGetTokenString(&buf, token)) {
+ errs() << "error: Couldn't get string for token\n";
+ return -1;
+ }
+
+ outs() << "[";
+
+ int operandIndex = EDOperandIndexForToken(token);
+
+ if (operandIndex >= 0)
+ outs() << operandIndex << "-";
+
+ if (EDTokenIsWhitespace(token)) {
+ outs() << "w";
+ } else if (EDTokenIsPunctuation(token)) {
+ outs() << "p";
+ } else if (EDTokenIsOpcode(token)) {
+ outs() << "o";
+ } else if (EDTokenIsLiteral(token)) {
+ outs() << "l";
+ } else if (EDTokenIsRegister(token)) {
+ outs() << "r";
+ } else {
+ outs() << "?";
+ }
+
+ outs() << ":" << buf;
+
+ if (EDTokenIsLiteral(token)) {
+ outs() << "=";
+ if (EDTokenIsNegativeLiteral(token))
+ outs() << "-";
+ uint64_t absoluteValue;
+ if (EDLiteralTokenAbsoluteValue(&absoluteValue, token)) {
+ errs() << "error: Couldn't get the value of a literal token\n";
+ return -1;
+ }
+ outs() << absoluteValue;
+ } else if (EDTokenIsRegister(token)) {
+ outs() << "=";
+ unsigned regID;
+ if (EDRegisterTokenValue(&regID, token)) {
+ errs() << "error: Couldn't get the ID of a register token\n";
+ return -1;
+ }
+ outs() << "r" << regID;
+ }
+
+ outs() << "]";
+ }
+
+ outs() << " ";
+
+ int numOperands = EDNumOperands(inst);
+
+ if (numOperands < 0) {
+ errs() << "error: Couldn't count operands\n";
+ return -1;
+ }
+
+ int operandIndex;
+
+ for (operandIndex = 0; operandIndex < numOperands; ++operandIndex) {
+ outs() << operandIndex << ":";
+
+ EDOperandRef operand;
+
+ if (EDGetOperand(&operand,
+ inst,
+ operandIndex)) {
+ errs() << "error: Couldn't get operand\n";
+ return -1;
+ }
+
+ uint64_t evaluatedResult;
+
+ EDEvaluateOperand(&evaluatedResult,
+ operand,
+ verboseEvaluator,
+ &disassembler);
+
+ outs() << " ";
+ }
+
+ outs() << "\n";
+
+ return 0;
+}
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-11-04 15:29:59 +0000