1 //===--- Disasm.cpp - Disassembler for bytecode functions -------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Dump method for Function which disassembles the bytecode. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "Function.h" 14 #include "Opcode.h" 15 #include "PrimType.h" 16 #include "Program.h" 17 #include "clang/AST/DeclCXX.h" 18 #include "llvm/Support/Compiler.h" 19 #include "llvm/Support/Format.h" 20 21 using namespace clang; 22 using namespace clang::interp; 23 24 LLVM_DUMP_METHOD void Function::dump() const { dump(llvm::errs()); } 25 26 LLVM_DUMP_METHOD void Function::dump(llvm::raw_ostream &OS) const { 27 if (F) { 28 if (auto *Cons = dyn_cast<CXXConstructorDecl>(F)) { 29 const std::string &Name = Cons->getParent()->getNameAsString(); 30 OS << Name << "::" << Name << ":\n"; 31 } else { 32 OS << F->getNameAsString() << ":\n"; 33 } 34 } else { 35 OS << "<<expr>>\n"; 36 } 37 38 OS << "frame size: " << getFrameSize() << "\n"; 39 OS << "arg size: " << getArgSize() << "\n"; 40 OS << "rvo: " << hasRVO() << "\n"; 41 42 auto PrintName = [&OS](const char *Name) { 43 OS << Name; 44 for (long I = 0, N = strlen(Name); I < 30 - N; ++I) { 45 OS << ' '; 46 } 47 }; 48 49 for (CodePtr Start = getCodeBegin(), PC = Start; PC != getCodeEnd();) { 50 size_t Addr = PC - Start; 51 auto Op = PC.read<Opcode>(); 52 OS << llvm::format("%8d", Addr) << " "; 53 switch (Op) { 54 #define GET_DISASM 55 #include "Opcodes.inc" 56 #undef GET_DISASM 57 } 58 } 59 } 60 61 LLVM_DUMP_METHOD void Program::dump() const { dump(llvm::errs()); } 62 63 LLVM_DUMP_METHOD void Program::dump(llvm::raw_ostream &OS) const { 64 for (auto &Func : Funcs) { 65 Func.second->dump(); 66 } 67 for (auto &Anon : AnonFuncs) { 68 Anon->dump(); 69 } 70 } 71