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
20using namespace clang;
21using namespace clang::interp;
22
23LLVM_DUMP_METHOD void Function::dump() const { dump(llvm::errs()); }
24
25LLVM_DUMP_METHOD void Function::dump(llvm::raw_ostream &OS) const {
26  if (F) {
27    if (auto *Cons = dyn_cast<CXXConstructorDecl>(F)) {
28      const std::string &Name = Cons->getParent()->getNameAsString();
29      OS << Name << "::" << Name << ":\n";
30    } else {
31      OS << F->getNameAsString() << ":\n";
32    }
33  } else {
34    OS << "<<expr>>\n";
35  }
36
37  OS << "frame size: " << getFrameSize() << "\n";
38  OS << "arg size:   " << getArgSize() << "\n";
39  OS << "rvo:        " << hasRVO() << "\n";
40
41  auto PrintName = [&OS](const char *Name) {
42    OS << Name;
43    for (long I = 0, N = strlen(Name); I < 30 - N; ++I) {
44      OS << ' ';
45    }
46  };
47
48  for (CodePtr Start = getCodeBegin(), PC = Start; PC != getCodeEnd();) {
49    size_t Addr = PC - Start;
50    auto Op = PC.read<Opcode>();
51    OS << llvm::format("%8d", Addr) << " ";
52    switch (Op) {
53#define GET_DISASM
54#include "Opcodes.inc"
55#undef GET_DISASM
56    }
57  }
58}
59
60LLVM_DUMP_METHOD void Program::dump() const { dump(llvm::errs()); }
61
62LLVM_DUMP_METHOD void Program::dump(llvm::raw_ostream &OS) const {
63  for (auto &Func : Funcs) {
64    Func.second->dump();
65  }
66  for (auto &Anon : AnonFuncs) {
67    Anon->dump();
68  }
69}
70