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//===--- Disasm.cpp - Disassembler for bytecode functions -------*- C++ -*-===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// Dump method for Function which disassembles the bytecode.
//
//===----------------------------------------------------------------------===//
#include "Boolean.h"
#include "Floating.h"
#include "Function.h"
#include "FunctionPointer.h"
#include "Integral.h"
#include "IntegralAP.h"
#include "InterpFrame.h"
#include "Opcode.h"
#include "PrimType.h"
#include "Program.h"
#include "clang/AST/ASTDumperUtils.h"
#include "clang/AST/DeclCXX.h"
#include "llvm/Support/Compiler.h"
#include "llvm/Support/Format.h"
using namespace clang;
using namespace clang::interp;
template <typename T> inline T ReadArg(Program &P, CodePtr &OpPC) {
if constexpr (std::is_pointer_v<T>) {
uint32_t ID = OpPC.read<uint32_t>();
return reinterpret_cast<T>(P.getNativePointer(ID));
} else {
return OpPC.read<T>();
}
}
template <> inline Floating ReadArg<Floating>(Program &P, CodePtr &OpPC) {
Floating F = Floating::deserialize(*OpPC);
OpPC += align(F.bytesToSerialize());
return F;
}
template <>
inline IntegralAP<false> ReadArg<IntegralAP<false>>(Program &P, CodePtr &OpPC) {
IntegralAP<false> I = IntegralAP<false>::deserialize(*OpPC);
OpPC += align(I.bytesToSerialize());
return I;
}
template <>
inline IntegralAP<true> ReadArg<IntegralAP<true>>(Program &P, CodePtr &OpPC) {
IntegralAP<true> I = IntegralAP<true>::deserialize(*OpPC);
OpPC += align(I.bytesToSerialize());
return I;
}
LLVM_DUMP_METHOD void Function::dump() const { dump(llvm::errs()); }
LLVM_DUMP_METHOD void Function::dump(llvm::raw_ostream &OS) const {
{
ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_GREEN, true});
OS << getName() << " " << (const void *)this << "\n";
}
OS << "frame size: " << getFrameSize() << "\n";
OS << "arg size: " << getArgSize() << "\n";
OS << "rvo: " << hasRVO() << "\n";
OS << "this arg: " << hasThisPointer() << "\n";
auto PrintName = [&OS](const char *Name) {
OS << Name;
long N = 30 - strlen(Name);
if (N > 0)
OS.indent(N);
};
for (CodePtr Start = getCodeBegin(), PC = Start; PC != getCodeEnd();) {
size_t Addr = PC - Start;
auto Op = PC.read<Opcode>();
OS << llvm::format("%8d", Addr) << " ";
switch (Op) {
#define GET_DISASM
#include "Opcodes.inc"
#undef GET_DISASM
}
}
}
LLVM_DUMP_METHOD void Program::dump() const { dump(llvm::errs()); }
static const char *primTypeToString(PrimType T) {
switch (T) {
case PT_Sint8:
return "Sint8";
case PT_Uint8:
return "Uint8";
case PT_Sint16:
return "Sint16";
case PT_Uint16:
return "Uint16";
case PT_Sint32:
return "Sint32";
case PT_Uint32:
return "Uint32";
case PT_Sint64:
return "Sint64";
case PT_Uint64:
return "Uint64";
case PT_IntAP:
return "IntAP";
case PT_IntAPS:
return "IntAPS";
case PT_Bool:
return "Bool";
case PT_Float:
return "Float";
case PT_Ptr:
return "Ptr";
case PT_FnPtr:
return "FnPtr";
}
llvm_unreachable("Unhandled PrimType");
}
LLVM_DUMP_METHOD void Program::dump(llvm::raw_ostream &OS) const {
{
ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_RED, true});
OS << "\n:: Program\n";
}
{
ColorScope SC(OS, true, {llvm::raw_ostream::WHITE, true});
OS << "Total memory : " << Allocator.getTotalMemory() << " bytes\n";
OS << "Global Variables: " << Globals.size() << "\n";
}
unsigned GI = 0;
for (const Global *G : Globals) {
const Descriptor *Desc = G->block()->getDescriptor();
Pointer GP = getPtrGlobal(GI);
OS << GI << ": " << (const void *)G->block() << " ";
{
ColorScope SC(OS, true,
GP.isInitialized()
? TerminalColor{llvm::raw_ostream::GREEN, false}
: TerminalColor{llvm::raw_ostream::RED, false});
OS << (GP.isInitialized() ? "initialized " : "uninitialized ");
}
Desc->dump(OS);
OS << "\n";
if (Desc->isPrimitive() && !Desc->isDummy()) {
OS << " ";
{
ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_CYAN, false});
OS << primTypeToString(Desc->getPrimType()) << " ";
}
TYPE_SWITCH(Desc->getPrimType(), { GP.deref<T>().print(OS); });
OS << "\n";
}
++GI;
}
{
ColorScope SC(OS, true, {llvm::raw_ostream::WHITE, true});
OS << "Functions: " << Funcs.size() << "\n";
}
for (const auto &Func : Funcs) {
Func.second->dump();
}
for (const auto &Anon : AnonFuncs) {
Anon->dump();
}
}
LLVM_DUMP_METHOD void Descriptor::dump() const {
dump(llvm::errs());
llvm::errs() << '\n';
}
LLVM_DUMP_METHOD void Descriptor::dump(llvm::raw_ostream &OS) const {
// Source
{
ColorScope SC(OS, true, {llvm::raw_ostream::BLUE, true});
if (const auto *ND = dyn_cast_if_present<NamedDecl>(asDecl()))
ND->printQualifiedName(OS);
else if (asExpr())
OS << "expr (TODO)";
}
// Print a few interesting bits about the descriptor.
if (isPrimitiveArray())
OS << " primitive-array";
else if (isCompositeArray())
OS << " composite-array";
else if (isRecord())
OS << " record";
else if (isPrimitive())
OS << " primitive";
if (isZeroSizeArray())
OS << " zero-size-arrary";
else if (isUnknownSizeArray())
OS << " unknown-size-array";
if (isDummy())
OS << " dummy";
}
LLVM_DUMP_METHOD void InterpFrame::dump(llvm::raw_ostream &OS,
unsigned Indent) const {
unsigned Spaces = Indent * 2;
{
ColorScope SC(OS, true, {llvm::raw_ostream::BLUE, true});
OS.indent(Spaces);
if (getCallee())
describe(OS);
else
OS << "Frame (Depth: " << getDepth() << ")";
OS << "\n";
}
OS.indent(Spaces) << "Function: " << getFunction();
if (const Function *F = getFunction()) {
OS << " (" << F->getName() << ")";
}
OS << "\n";
OS.indent(Spaces) << "This: " << getThis() << "\n";
OS.indent(Spaces) << "RVO: " << getRVOPtr() << "\n";
while (const InterpFrame *F = this->Caller) {
F->dump(OS, Indent + 1);
F = F->Caller;
}
}
LLVM_DUMP_METHOD void Record::dump(llvm::raw_ostream &OS, unsigned Indentation,
unsigned Offset) const {
unsigned Indent = Indentation * 2;
OS.indent(Indent);
{
ColorScope SC(OS, true, {llvm::raw_ostream::BLUE, true});
OS << getName() << "\n";
}
unsigned I = 0;
for (const Record::Base &B : bases()) {
OS.indent(Indent) << "- Base " << I << ". Offset " << (Offset + B.Offset)
<< "\n";
B.R->dump(OS, Indentation + 1, Offset + B.Offset);
++I;
}
// FIXME: Virtual bases.
I = 0;
for (const Record::Field &F : fields()) {
OS.indent(Indent) << "- Field " << I << ": ";
{
ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_RED, true});
OS << F.Decl->getName();
}
OS << ". Offset " << (Offset + F.Offset) << "\n";
++I;
}
}
LLVM_DUMP_METHOD void Block::dump(llvm::raw_ostream &OS) const {
{
ColorScope SC(OS, true, {llvm::raw_ostream::BRIGHT_BLUE, true});
OS << "Block " << (const void *)this << "\n";
}
unsigned NPointers = 0;
for (const Pointer *P = Pointers; P; P = P->Next) {
++NPointers;
}
OS << " Pointers: " << NPointers << "\n";
OS << " Dead: " << IsDead << "\n";
OS << " Static: " << IsStatic << "\n";
OS << " Extern: " << IsExtern << "\n";
OS << " Initialized: " << IsInitialized << "\n";
}
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