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//===- FunctionDumper.cpp ------------------------------------ *- C++ *-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "FunctionDumper.h"
#include "llvm-pdbdump.h"
#include "llvm/DebugInfo/PDB/IPDBSession.h"
#include "llvm/DebugInfo/PDB/PDBSymbolData.h"
#include "llvm/DebugInfo/PDB/PDBSymbolFunc.h"
#include "llvm/DebugInfo/PDB/PDBSymbolFuncDebugEnd.h"
#include "llvm/DebugInfo/PDB/PDBSymbolFuncDebugStart.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeArray.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeBuiltin.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeEnum.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionArg.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeFunctionSig.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypePointer.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeTypedef.h"
#include "llvm/DebugInfo/PDB/PDBSymbolTypeUDT.h"
#include "llvm/Support/Format.h"
using namespace llvm;
namespace {
template <class T>
void dumpClassParentWithScopeOperator(const T &Symbol, llvm::raw_ostream &OS,
llvm::FunctionDumper &Dumper) {
uint32_t ClassParentId = Symbol.getClassParentId();
auto ClassParent =
Symbol.getSession().template getConcreteSymbolById<PDBSymbolTypeUDT>(
ClassParentId);
if (!ClassParent)
return;
OS << ClassParent->getName() << "::";
}
}
FunctionDumper::FunctionDumper() : PDBSymDumper(true) {}
void FunctionDumper::start(const PDBSymbolTypeFunctionSig &Symbol,
PointerType Pointer, raw_ostream &OS) {
auto ReturnType = Symbol.getReturnType();
ReturnType->dump(OS, 0, *this);
OS << " ";
uint32_t ClassParentId = Symbol.getClassParentId();
auto ClassParent =
Symbol.getSession().getConcreteSymbolById<PDBSymbolTypeUDT>(
ClassParentId);
PDB_CallingConv CC = Symbol.getCallingConvention();
bool ShouldDumpCallingConvention = true;
if ((ClassParent && CC == PDB_CallingConv::Thiscall) ||
(!ClassParent && CC == PDB_CallingConv::NearStdcall)) {
ShouldDumpCallingConvention = false;
}
if (Pointer == PointerType::None) {
if (ShouldDumpCallingConvention)
OS << CC << " ";
if (ClassParent)
OS << "(" << ClassParent->getName() << "::)";
} else {
OS << "(";
if (ShouldDumpCallingConvention)
OS << CC << " ";
OS << Symbol.getCallingConvention() << " ";
if (ClassParent)
OS << ClassParent->getName() << "::";
if (Pointer == PointerType::Reference)
OS << "&";
else
OS << "*";
OS << ")";
}
OS << "(";
if (auto ChildEnum = Symbol.getArguments()) {
uint32_t Index = 0;
while (auto Arg = ChildEnum->getNext()) {
Arg->dump(OS, 0, *this);
if (++Index < ChildEnum->getChildCount())
OS << ", ";
}
}
OS << ")";
if (Symbol.isConstType())
OS << " const";
if (Symbol.isVolatileType())
OS << " volatile";
}
void FunctionDumper::start(const PDBSymbolFunc &Symbol, PointerType Pointer,
raw_ostream &OS, int Indent) {
uint32_t FuncStart = Symbol.getRelativeVirtualAddress();
uint32_t FuncEnd = FuncStart + Symbol.getLength();
OS << newline(Indent);
OS << "func [" << format_hex(FuncStart, 8);
if (auto DebugStart = Symbol.findOneChild<PDBSymbolFuncDebugStart>())
OS << "+" << DebugStart->getRelativeVirtualAddress() - FuncStart;
OS << " - " << format_hex(FuncEnd, 8);
if (auto DebugEnd = Symbol.findOneChild<PDBSymbolFuncDebugEnd>())
OS << "-" << FuncEnd - DebugEnd->getRelativeVirtualAddress();
OS << "] ";
if (Symbol.hasFramePointer())
OS << "(" << Symbol.getLocalBasePointerRegisterId() << ")";
else
OS << "(FPO)";
OS << " ";
if (Symbol.isVirtual() || Symbol.isPureVirtual())
OS << "virtual ";
auto Signature = Symbol.getSignature();
if (!Signature) {
OS << Symbol.getName();
if (Pointer == PointerType::Pointer)
OS << "*";
else if (Pointer == FunctionDumper::PointerType::Reference)
OS << "&";
return;
}
auto ReturnType = Signature->getReturnType();
ReturnType->dump(OS, 0, *this);
OS << " ";
auto ClassParent = Symbol.getClassParent();
PDB_CallingConv CC = Signature->getCallingConvention();
if (Pointer != FunctionDumper::PointerType::None)
OS << "(";
if ((ClassParent && CC != PDB_CallingConv::Thiscall) ||
(!ClassParent && CC != PDB_CallingConv::NearStdcall))
OS << Signature->getCallingConvention() << " ";
OS << Symbol.getName();
if (Pointer != FunctionDumper::PointerType::None) {
if (Pointer == PointerType::Pointer)
OS << "*";
else if (Pointer == FunctionDumper::PointerType::Reference)
OS << "&";
OS << ")";
}
OS << "(";
if (auto Arguments = Symbol.getArguments()) {
uint32_t Index = 0;
while (auto Arg = Arguments->getNext()) {
auto ArgType = Arg->getType();
ArgType->dump(OS, 0, *this);
OS << " " << Arg->getName();
if (++Index < Arguments->getChildCount())
OS << ", ";
}
}
OS << ")";
if (Symbol.isConstType())
OS << " const";
if (Symbol.isVolatileType())
OS << " volatile";
if (Symbol.isPureVirtual())
OS << " = 0";
}
void FunctionDumper::dump(const PDBSymbolTypeArray &Symbol, raw_ostream &OS,
int Indent) {
uint32_t ElementTypeId = Symbol.getTypeId();
auto ElementType = Symbol.getSession().getSymbolById(ElementTypeId);
if (!ElementType)
return;
ElementType->dump(OS, 0, *this);
OS << "[" << Symbol.getLength() << "]";
}
void FunctionDumper::dump(const PDBSymbolTypeBuiltin &Symbol, raw_ostream &OS,
int Indent) {
PDB_BuiltinType Type = Symbol.getBuiltinType();
OS << Type;
if (Type == PDB_BuiltinType::UInt || Type == PDB_BuiltinType::Int)
OS << (8 * Symbol.getLength()) << "_t";
}
void FunctionDumper::dump(const PDBSymbolTypeEnum &Symbol, raw_ostream &OS,
int Indent) {
dumpClassParentWithScopeOperator(Symbol, OS, *this);
OS << Symbol.getName();
}
void FunctionDumper::dump(const PDBSymbolTypeFunctionArg &Symbol,
raw_ostream &OS, int Indent) {
// PDBSymbolTypeFunctionArg is just a shim over the real argument. Just drill
// through to the real thing and dump it.
Symbol.defaultDump(OS, Indent);
uint32_t TypeId = Symbol.getTypeId();
auto Type = Symbol.getSession().getSymbolById(TypeId);
if (!Type)
return;
Type->dump(OS, 0, *this);
}
void FunctionDumper::dump(const PDBSymbolTypeTypedef &Symbol, raw_ostream &OS,
int Indent) {
dumpClassParentWithScopeOperator(Symbol, OS, *this);
OS << Symbol.getName();
}
void FunctionDumper::dump(const PDBSymbolTypePointer &Symbol, raw_ostream &OS,
int Indent) {
uint32_t PointeeId = Symbol.getTypeId();
auto PointeeType = Symbol.getSession().getSymbolById(PointeeId);
if (!PointeeType)
return;
if (auto FuncSig = dyn_cast<PDBSymbolTypeFunctionSig>(PointeeType.get())) {
FunctionDumper NestedDumper;
PointerType Pointer =
Symbol.isReference() ? PointerType::Reference : PointerType::Pointer;
NestedDumper.start(*FuncSig, Pointer, OS);
} else {
if (Symbol.isConstType())
OS << "const ";
if (Symbol.isVolatileType())
OS << "volatile ";
PointeeType->dump(OS, Indent, *this);
OS << (Symbol.isReference() ? "&" : "*");
}
}
void FunctionDumper::dump(const PDBSymbolTypeUDT &Symbol, raw_ostream &OS,
int Indent) {
OS << Symbol.getName();
}
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