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
21using namespace clang;
22using namespace clang::interp;
23
24LLVM_DUMP_METHOD void Function::dump() const { dump(llvm::errs()); }
25
26LLVM_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
61LLVM_DUMP_METHOD void Program::dump() const { dump(llvm::errs()); }
62
63LLVM_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