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Add stacktrace symbol demangling

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Kelebek1 2023-01-13 21:06:13 +00:00
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12 changed files with 7287 additions and 15 deletions
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@ -0,0 +1,279 @@
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@ -154,3 +154,7 @@ endif()
if (YUZU_USE_EXTERNAL_VULKAN_HEADERS)
add_subdirectory(Vulkan-Headers EXCLUDE_FROM_ALL)
endif()
add_library(demangle STATIC)
target_include_directories(demangle PUBLIC ./demangle)
target_sources(demangle PRIVATE demangle/ItaniumDemangle.cpp)

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//===--- Demangle.h ---------------------------------------------*- 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-FileCopyrightText: Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEMANGLE_DEMANGLE_H
#define LLVM_DEMANGLE_DEMANGLE_H
#include <cstddef>
#include <string>
namespace llvm {
/// This is a llvm local version of __cxa_demangle. Other than the name and
/// being in the llvm namespace it is identical.
///
/// The mangled_name is demangled into buf and returned. If the buffer is not
/// large enough, realloc is used to expand it.
///
/// The *status will be set to a value from the following enumeration
enum : int {
demangle_unknown_error = -4,
demangle_invalid_args = -3,
demangle_invalid_mangled_name = -2,
demangle_memory_alloc_failure = -1,
demangle_success = 0,
};
char *itaniumDemangle(const char *mangled_name, char *buf, size_t *n,
int *status);
enum MSDemangleFlags {
MSDF_None = 0,
MSDF_DumpBackrefs = 1 << 0,
MSDF_NoAccessSpecifier = 1 << 1,
MSDF_NoCallingConvention = 1 << 2,
MSDF_NoReturnType = 1 << 3,
MSDF_NoMemberType = 1 << 4,
};
char *microsoftDemangle(const char *mangled_name, char *buf, size_t *n,
int *status, MSDemangleFlags Flags = MSDF_None);
/// "Partial" demangler. This supports demangling a string into an AST
/// (typically an intermediate stage in itaniumDemangle) and querying certain
/// properties or partially printing the demangled name.
struct ItaniumPartialDemangler {
ItaniumPartialDemangler();
ItaniumPartialDemangler(ItaniumPartialDemangler &&Other);
ItaniumPartialDemangler &operator=(ItaniumPartialDemangler &&Other);
/// Demangle into an AST. Subsequent calls to the rest of the member functions
/// implicitly operate on the AST this produces.
/// \return true on error, false otherwise
bool partialDemangle(const char *MangledName);
/// Just print the entire mangled name into Buf. Buf and N behave like the
/// second and third parameters to itaniumDemangle.
char *finishDemangle(char *Buf, size_t *N) const;
/// Get the base name of a function. This doesn't include trailing template
/// arguments, ie for "a::b<int>" this function returns "b".
char *getFunctionBaseName(char *Buf, size_t *N) const;
/// Get the context name for a function. For "a::b::c", this function returns
/// "a::b".
char *getFunctionDeclContextName(char *Buf, size_t *N) const;
/// Get the entire name of this function.
char *getFunctionName(char *Buf, size_t *N) const;
/// Get the parameters for this function.
char *getFunctionParameters(char *Buf, size_t *N) const;
char *getFunctionReturnType(char *Buf, size_t *N) const;
/// If this function has any any cv or reference qualifiers. These imply that
/// the function is a non-static member function.
bool hasFunctionQualifiers() const;
/// If this symbol describes a constructor or destructor.
bool isCtorOrDtor() const;
/// If this symbol describes a function.
bool isFunction() const;
/// If this symbol describes a variable.
bool isData() const;
/// If this symbol is a <special-name>. These are generally implicitly
/// generated by the implementation, such as vtables and typeinfo names.
bool isSpecialName() const;
~ItaniumPartialDemangler();
private:
void *RootNode;
void *Context;
};
} // namespace llvm
#endif

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//===--- DemangleConfig.h ---------------------------------------*- 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-FileCopyrightText: Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains a variety of feature test macros copied from
// include/llvm/Support/Compiler.h so that LLVMDemangle does not need to take
// a dependency on LLVMSupport.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEMANGLE_COMPILER_H
#define LLVM_DEMANGLE_COMPILER_H
#ifndef __has_feature
#define __has_feature(x) 0
#endif
#ifndef __has_cpp_attribute
#define __has_cpp_attribute(x) 0
#endif
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
#ifndef DEMANGLE_GNUC_PREREQ
#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
#define DEMANGLE_GNUC_PREREQ(maj, min, patch) \
((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) + __GNUC_PATCHLEVEL__ >= \
((maj) << 20) + ((min) << 10) + (patch))
#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
#define DEMANGLE_GNUC_PREREQ(maj, min, patch) \
((__GNUC__ << 20) + (__GNUC_MINOR__ << 10) >= ((maj) << 20) + ((min) << 10))
#else
#define DEMANGLE_GNUC_PREREQ(maj, min, patch) 0
#endif
#endif
#if __has_attribute(used) || DEMANGLE_GNUC_PREREQ(3, 1, 0)
#define DEMANGLE_ATTRIBUTE_USED __attribute__((__used__))
#else
#define DEMANGLE_ATTRIBUTE_USED
#endif
#if __has_builtin(__builtin_unreachable) || DEMANGLE_GNUC_PREREQ(4, 5, 0)
#define DEMANGLE_UNREACHABLE __builtin_unreachable()
#elif defined(_MSC_VER)
#define DEMANGLE_UNREACHABLE __assume(false)
#else
#define DEMANGLE_UNREACHABLE
#endif
#if __has_attribute(noinline) || DEMANGLE_GNUC_PREREQ(3, 4, 0)
#define DEMANGLE_ATTRIBUTE_NOINLINE __attribute__((noinline))
#elif defined(_MSC_VER)
#define DEMANGLE_ATTRIBUTE_NOINLINE __declspec(noinline)
#else
#define DEMANGLE_ATTRIBUTE_NOINLINE
#endif
#if !defined(NDEBUG)
#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE DEMANGLE_ATTRIBUTE_USED
#else
#define DEMANGLE_DUMP_METHOD DEMANGLE_ATTRIBUTE_NOINLINE
#endif
#if __cplusplus > 201402L && __has_cpp_attribute(fallthrough)
#define DEMANGLE_FALLTHROUGH [[fallthrough]]
#elif __has_cpp_attribute(gnu::fallthrough)
#define DEMANGLE_FALLTHROUGH [[gnu::fallthrough]]
#elif !__cplusplus
// Workaround for llvm.org/PR23435, since clang 3.6 and below emit a spurious
// error when __has_cpp_attribute is given a scoped attribute in C mode.
#define DEMANGLE_FALLTHROUGH
#elif __has_cpp_attribute(clang::fallthrough)
#define DEMANGLE_FALLTHROUGH [[clang::fallthrough]]
#else
#define DEMANGLE_FALLTHROUGH
#endif
#define DEMANGLE_NAMESPACE_BEGIN namespace llvm { namespace itanium_demangle {
#define DEMANGLE_NAMESPACE_END } }
#endif

588
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@ -0,0 +1,588 @@
//===------------------------- ItaniumDemangle.cpp ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-FileCopyrightText: Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// FIXME: (possibly) incomplete list of features that clang mangles that this
// file does not yet support:
// - C++ modules TS
#include "Demangle.h"
#include "ItaniumDemangle.h"
#include <cassert>
#include <cctype>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <numeric>
#include <utility>
#include <vector>
using namespace llvm;
using namespace llvm::itanium_demangle;
constexpr const char *itanium_demangle::FloatData<float>::spec;
constexpr const char *itanium_demangle::FloatData<double>::spec;
constexpr const char *itanium_demangle::FloatData<long double>::spec;
// <discriminator> := _ <non-negative number> # when number < 10
// := __ <non-negative number> _ # when number >= 10
// extension := decimal-digit+ # at the end of string
const char *itanium_demangle::parse_discriminator(const char *first,
const char *last) {
// parse but ignore discriminator
if (first != last) {
if (*first == '_') {
const char *t1 = first + 1;
if (t1 != last) {
if (std::isdigit(*t1))
first = t1 + 1;
else if (*t1 == '_') {
for (++t1; t1 != last && std::isdigit(*t1); ++t1)
;
if (t1 != last && *t1 == '_')
first = t1 + 1;
}
}
} else if (std::isdigit(*first)) {
const char *t1 = first + 1;
for (; t1 != last && std::isdigit(*t1); ++t1)
;
if (t1 == last)
first = last;
}
}
return first;
}
#ifndef NDEBUG
namespace {
struct DumpVisitor {
unsigned Depth = 0;
bool PendingNewline = false;
template<typename NodeT> static constexpr bool wantsNewline(const NodeT *) {
return true;
}
static bool wantsNewline(NodeArray A) { return !A.empty(); }
static constexpr bool wantsNewline(...) { return false; }
template<typename ...Ts> static bool anyWantNewline(Ts ...Vs) {
for (bool B : {wantsNewline(Vs)...})
if (B)
return true;
return false;
}
void printStr(const char *S) { fprintf(stderr, "%s", S); }
void print(StringView SV) {
fprintf(stderr, "\"%.*s\"", (int)SV.size(), SV.begin());
}
void print(const Node *N) {
if (N)
N->visit(std::ref(*this));
else
printStr("<null>");
}
void print(NodeOrString NS) {
if (NS.isNode())
print(NS.asNode());
else if (NS.isString())
print(NS.asString());
else
printStr("NodeOrString()");
}
void print(NodeArray A) {
++Depth;
printStr("{");
bool First = true;
for (const Node *N : A) {
if (First)
print(N);
else
printWithComma(N);
First = false;
}
printStr("}");
--Depth;
}
// Overload used when T is exactly 'bool', not merely convertible to 'bool'.
void print(bool B) { printStr(B ? "true" : "false"); }
template <class T>
typename std::enable_if<std::is_unsigned<T>::value>::type print(T N) {
fprintf(stderr, "%llu", (unsigned long long)N);
}
template <class T>
typename std::enable_if<std::is_signed<T>::value>::type print(T N) {
fprintf(stderr, "%lld", (long long)N);
}
void print(ReferenceKind RK) {
switch (RK) {
case ReferenceKind::LValue:
return printStr("ReferenceKind::LValue");
case ReferenceKind::RValue:
return printStr("ReferenceKind::RValue");
}
}
void print(FunctionRefQual RQ) {
switch (RQ) {
case FunctionRefQual::FrefQualNone:
return printStr("FunctionRefQual::FrefQualNone");
case FunctionRefQual::FrefQualLValue:
return printStr("FunctionRefQual::FrefQualLValue");
case FunctionRefQual::FrefQualRValue:
return printStr("FunctionRefQual::FrefQualRValue");
}
}
void print(Qualifiers Qs) {
if (!Qs) return printStr("QualNone");
struct QualName { Qualifiers Q; const char *Name; } Names[] = {
{QualConst, "QualConst"},
{QualVolatile, "QualVolatile"},
{QualRestrict, "QualRestrict"},
};
for (QualName Name : Names) {
if (Qs & Name.Q) {
printStr(Name.Name);
Qs = Qualifiers(Qs & ~Name.Q);
if (Qs) printStr(" | ");
}
}
}
void print(SpecialSubKind SSK) {
switch (SSK) {
case SpecialSubKind::allocator:
return printStr("SpecialSubKind::allocator");
case SpecialSubKind::basic_string:
return printStr("SpecialSubKind::basic_string");
case SpecialSubKind::string:
return printStr("SpecialSubKind::string");
case SpecialSubKind::istream:
return printStr("SpecialSubKind::istream");
case SpecialSubKind::ostream:
return printStr("SpecialSubKind::ostream");
case SpecialSubKind::iostream:
return printStr("SpecialSubKind::iostream");
}
}
void print(TemplateParamKind TPK) {
switch (TPK) {
case TemplateParamKind::Type:
return printStr("TemplateParamKind::Type");
case TemplateParamKind::NonType:
return printStr("TemplateParamKind::NonType");
case TemplateParamKind::Template:
return printStr("TemplateParamKind::Template");
}
}
void newLine() {
printStr("\n");
for (unsigned I = 0; I != Depth; ++I)
printStr(" ");
PendingNewline = false;
}
template<typename T> void printWithPendingNewline(T V) {
print(V);
if (wantsNewline(V))
PendingNewline = true;
}
template<typename T> void printWithComma(T V) {
if (PendingNewline || wantsNewline(V)) {
printStr(",");
newLine();
} else {
printStr(", ");
}
printWithPendingNewline(V);
}
struct CtorArgPrinter {
DumpVisitor &Visitor;
template<typename T, typename ...Rest> void operator()(T V, Rest ...Vs) {
if (Visitor.anyWantNewline(V, Vs...))
Visitor.newLine();
Visitor.printWithPendingNewline(V);
int PrintInOrder[] = { (Visitor.printWithComma(Vs), 0)..., 0 };
(void)PrintInOrder;
}
};
template<typename NodeT> void operator()(const NodeT *Node) {
Depth += 2;
fprintf(stderr, "%s(", itanium_demangle::NodeKind<NodeT>::name());
Node->match(CtorArgPrinter{*this});
fprintf(stderr, ")");
Depth -= 2;
}
void operator()(const ForwardTemplateReference *Node) {
Depth += 2;
fprintf(stderr, "ForwardTemplateReference(");
if (Node->Ref && !Node->Printing) {
Node->Printing = true;
CtorArgPrinter{*this}(Node->Ref);
Node->Printing = false;
} else {
CtorArgPrinter{*this}(Node->Index);
}
fprintf(stderr, ")");
Depth -= 2;
}
};
}
void itanium_demangle::Node::dump() const {
DumpVisitor V;
visit(std::ref(V));
V.newLine();
}
#endif
namespace {
class BumpPointerAllocator {
struct BlockMeta {
BlockMeta* Next;
size_t Current;
};
static constexpr size_t AllocSize = 4096;
static constexpr size_t UsableAllocSize = AllocSize - sizeof(BlockMeta);
alignas(long double) char InitialBuffer[AllocSize];
BlockMeta* BlockList = nullptr;
void grow() {
char* NewMeta = static_cast<char *>(std::malloc(AllocSize));
if (NewMeta == nullptr)
std::terminate();
BlockList = new (NewMeta) BlockMeta{BlockList, 0};
}
void* allocateMassive(size_t NBytes) {
NBytes += sizeof(BlockMeta);
BlockMeta* NewMeta = reinterpret_cast<BlockMeta*>(std::malloc(NBytes));
if (NewMeta == nullptr)
std::terminate();
BlockList->Next = new (NewMeta) BlockMeta{BlockList->Next, 0};
return static_cast<void*>(NewMeta + 1);
}
public:
BumpPointerAllocator()
: BlockList(new (InitialBuffer) BlockMeta{nullptr, 0}) {}
void* allocate(size_t N) {
N = (N + 15u) & ~15u;
if (N + BlockList->Current >= UsableAllocSize) {
if (N > UsableAllocSize)
return allocateMassive(N);
grow();
}
BlockList->Current += N;
return static_cast<void*>(reinterpret_cast<char*>(BlockList + 1) +
BlockList->Current - N);
}
void reset() {
while (BlockList) {
BlockMeta* Tmp = BlockList;
BlockList = BlockList->Next;
if (reinterpret_cast<char*>(Tmp) != InitialBuffer)
std::free(Tmp);
}
BlockList = new (InitialBuffer) BlockMeta{nullptr, 0};
}
~BumpPointerAllocator() { reset(); }
};
class DefaultAllocator {
BumpPointerAllocator Alloc;
public:
void reset() { Alloc.reset(); }
template<typename T, typename ...Args> T *makeNode(Args &&...args) {
return new (Alloc.allocate(sizeof(T)))
T(std::forward<Args>(args)...);
}
void *allocateNodeArray(size_t sz) {
return Alloc.allocate(sizeof(Node *) * sz);
}
};
} // unnamed namespace
//===----------------------------------------------------------------------===//
// Code beyond this point should not be synchronized with libc++abi.
//===----------------------------------------------------------------------===//
using Demangler = itanium_demangle::ManglingParser<DefaultAllocator>;
char *llvm::itaniumDemangle(const char *MangledName, char *Buf,
size_t *N, int *Status) {
if (MangledName == nullptr || (Buf != nullptr && N == nullptr)) {
if (Status)
*Status = demangle_invalid_args;
return nullptr;
}
int InternalStatus = demangle_success;
Demangler Parser(MangledName, MangledName + std::strlen(MangledName));
OutputStream S;
Node *AST = Parser.parse();
if (AST == nullptr)
InternalStatus = demangle_invalid_mangled_name;
else if (!initializeOutputStream(Buf, N, S, 1024))
InternalStatus = demangle_memory_alloc_failure;
else {
assert(Parser.ForwardTemplateRefs.empty());
AST->print(S);
S += '\0';
if (N != nullptr)
*N = S.getCurrentPosition();
Buf = S.getBuffer();
}
if (Status)
*Status = InternalStatus;
return InternalStatus == demangle_success ? Buf : nullptr;
}
ItaniumPartialDemangler::ItaniumPartialDemangler()
: RootNode(nullptr), Context(new Demangler{nullptr, nullptr}) {}
ItaniumPartialDemangler::~ItaniumPartialDemangler() {
delete static_cast<Demangler *>(Context);
}
ItaniumPartialDemangler::ItaniumPartialDemangler(
ItaniumPartialDemangler &&Other)
: RootNode(Other.RootNode), Context(Other.Context) {
Other.Context = Other.RootNode = nullptr;
}
ItaniumPartialDemangler &ItaniumPartialDemangler::
operator=(ItaniumPartialDemangler &&Other) {
std::swap(RootNode, Other.RootNode);
std::swap(Context, Other.Context);
return *this;
}
// Demangle MangledName into an AST, storing it into this->RootNode.
bool ItaniumPartialDemangler::partialDemangle(const char *MangledName) {
Demangler *Parser = static_cast<Demangler *>(Context);
size_t Len = std::strlen(MangledName);
Parser->reset(MangledName, MangledName + Len);
RootNode = Parser->parse();
return RootNode == nullptr;
}
static char *printNode(const Node *RootNode, char *Buf, size_t *N) {
OutputStream S;
if (!initializeOutputStream(Buf, N, S, 128))
return nullptr;
RootNode->print(S);
S += '\0';
if (N != nullptr)
*N = S.getCurrentPosition();
return S.getBuffer();
}
char *ItaniumPartialDemangler::getFunctionBaseName(char *Buf, size_t *N) const {
if (!isFunction())
return nullptr;
const Node *Name = static_cast<const FunctionEncoding *>(RootNode)->getName();
while (true) {
switch (Name->getKind()) {
case Node::KAbiTagAttr:
Name = static_cast<const AbiTagAttr *>(Name)->Base;
continue;
case Node::KStdQualifiedName:
Name = static_cast<const StdQualifiedName *>(Name)->Child;
continue;
case Node::KNestedName:
Name = static_cast<const NestedName *>(Name)->Name;
continue;
case Node::KLocalName:
Name = static_cast<const LocalName *>(Name)->Entity;
continue;
case Node::KNameWithTemplateArgs:
Name = static_cast<const NameWithTemplateArgs *>(Name)->Name;
continue;
default:
return printNode(Name, Buf, N);
}
}
}
char *ItaniumPartialDemangler::getFunctionDeclContextName(char *Buf,
size_t *N) const {
if (!isFunction())
return nullptr;
const Node *Name = static_cast<const FunctionEncoding *>(RootNode)->getName();
OutputStream S;
if (!initializeOutputStream(Buf, N, S, 128))
return nullptr;
KeepGoingLocalFunction:
while (true) {
if (Name->getKind() == Node::KAbiTagAttr) {
Name = static_cast<const AbiTagAttr *>(Name)->Base;
continue;
}
if (Name->getKind() == Node::KNameWithTemplateArgs) {
Name = static_cast<const NameWithTemplateArgs *>(Name)->Name;
continue;
}
break;
}
switch (Name->getKind()) {
case Node::KStdQualifiedName:
S += "std";
break;
case Node::KNestedName:
static_cast<const NestedName *>(Name)->Qual->print(S);
break;
case Node::KLocalName: {
auto *LN = static_cast<const LocalName *>(Name);
LN->Encoding->print(S);
S += "::";
Name = LN->Entity;
goto KeepGoingLocalFunction;
}
default:
break;
}
S += '\0';
if (N != nullptr)
*N = S.getCurrentPosition();
return S.getBuffer();
}
char *ItaniumPartialDemangler::getFunctionName(char *Buf, size_t *N) const {
if (!isFunction())
return nullptr;
auto *Name = static_cast<FunctionEncoding *>(RootNode)->getName();
return printNode(Name, Buf, N);
}
char *ItaniumPartialDemangler::getFunctionParameters(char *Buf,
size_t *N) const {
if (!isFunction())
return nullptr;
NodeArray Params = static_cast<FunctionEncoding *>(RootNode)->getParams();
OutputStream S;
if (!initializeOutputStream(Buf, N, S, 128))
return nullptr;
S += '(';
Params.printWithComma(S);
S += ')';
S += '\0';
if (N != nullptr)
*N = S.getCurrentPosition();
return S.getBuffer();
}
char *ItaniumPartialDemangler::getFunctionReturnType(
char *Buf, size_t *N) const {
if (!isFunction())
return nullptr;
OutputStream S;
if (!initializeOutputStream(Buf, N, S, 128))
return nullptr;
if (const Node *Ret =
static_cast<const FunctionEncoding *>(RootNode)->getReturnType())
Ret->print(S);
S += '\0';
if (N != nullptr)
*N = S.getCurrentPosition();
return S.getBuffer();
}
char *ItaniumPartialDemangler::finishDemangle(char *Buf, size_t *N) const {
assert(RootNode != nullptr && "must call partialDemangle()");
return printNode(static_cast<Node *>(RootNode), Buf, N);
}
bool ItaniumPartialDemangler::hasFunctionQualifiers() const {
assert(RootNode != nullptr && "must call partialDemangle()");
if (!isFunction())
return false;
auto *E = static_cast<const FunctionEncoding *>(RootNode);
return E->getCVQuals() != QualNone || E->getRefQual() != FrefQualNone;
}
bool ItaniumPartialDemangler::isCtorOrDtor() const {
const Node *N = static_cast<const Node *>(RootNode);
while (N) {
switch (N->getKind()) {
default:
return false;
case Node::KCtorDtorName:
return true;
case Node::KAbiTagAttr:
N = static_cast<const AbiTagAttr *>(N)->Base;
break;
case Node::KFunctionEncoding:
N = static_cast<const FunctionEncoding *>(N)->getName();
break;
case Node::KLocalName:
N = static_cast<const LocalName *>(N)->Entity;
break;
case Node::KNameWithTemplateArgs:
N = static_cast<const NameWithTemplateArgs *>(N)->Name;
break;
case Node::KNestedName:
N = static_cast<const NestedName *>(N)->Name;
break;
case Node::KStdQualifiedName:
N = static_cast<const StdQualifiedName *>(N)->Child;
break;
}
}
return false;
}
bool ItaniumPartialDemangler::isFunction() const {
assert(RootNode != nullptr && "must call partialDemangle()");
return static_cast<const Node *>(RootNode)->getKind() ==
Node::KFunctionEncoding;
}
bool ItaniumPartialDemangler::isSpecialName() const {
assert(RootNode != nullptr && "must call partialDemangle()");
auto K = static_cast<const Node *>(RootNode)->getKind();
return K == Node::KSpecialName || K == Node::KCtorVtableSpecialName;
}
bool ItaniumPartialDemangler::isData() const {
return !isFunction() && !isSpecialName();
}

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//===--- StringView.h -------------------------------------------*- 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-FileCopyrightText: Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// FIXME: Use std::string_view instead when we support C++17.
//
//===----------------------------------------------------------------------===//
#ifndef DEMANGLE_STRINGVIEW_H
#define DEMANGLE_STRINGVIEW_H
#include "DemangleConfig.h"
#include <algorithm>
#include <cassert>
#include <cstring>
DEMANGLE_NAMESPACE_BEGIN
class StringView {
const char *First;
const char *Last;
public:
static const size_t npos = ~size_t(0);
template <size_t N>
StringView(const char (&Str)[N]) : First(Str), Last(Str + N - 1) {}
StringView(const char *First_, const char *Last_)
: First(First_), Last(Last_) {}
StringView(const char *First_, size_t Len)
: First(First_), Last(First_ + Len) {}
StringView(const char *Str) : First(Str), Last(Str + std::strlen(Str)) {}
StringView() : First(nullptr), Last(nullptr) {}
StringView substr(size_t From) const {
return StringView(begin() + From, size() - From);
}
size_t find(char C, size_t From = 0) const {
size_t FindBegin = std::min(From, size());
// Avoid calling memchr with nullptr.
if (FindBegin < size()) {
// Just forward to memchr, which is faster than a hand-rolled loop.
if (const void *P = ::memchr(First + FindBegin, C, size() - FindBegin))
return size_t(static_cast<const char *>(P) - First);
}
return npos;
}
StringView substr(size_t From, size_t To) const {
if (To >= size())
To = size() - 1;
if (From >= size())
From = size() - 1;
return StringView(First + From, First + To);
}
StringView dropFront(size_t N = 1) const {
if (N >= size())
N = size();
return StringView(First + N, Last);
}
StringView dropBack(size_t N = 1) const {
if (N >= size())
N = size();
return StringView(First, Last - N);
}
char front() const {
assert(!empty());
return *begin();
}
char back() const {
assert(!empty());
return *(end() - 1);
}
char popFront() {
assert(!empty());
return *First++;
}
bool consumeFront(char C) {
if (!startsWith(C))
return false;
*this = dropFront(1);
return true;
}
bool consumeFront(StringView S) {
if (!startsWith(S))
return false;
*this = dropFront(S.size());
return true;
}
bool startsWith(char C) const { return !empty() && *begin() == C; }
bool startsWith(StringView Str) const {
if (Str.size() > size())
return false;
return std::equal(Str.begin(), Str.end(), begin());
}
const char &operator[](size_t Idx) const { return *(begin() + Idx); }
const char *begin() const { return First; }
const char *end() const { return Last; }
size_t size() const { return static_cast<size_t>(Last - First); }
bool empty() const { return First == Last; }
};
inline bool operator==(const StringView &LHS, const StringView &RHS) {
return LHS.size() == RHS.size() &&
std::equal(LHS.begin(), LHS.end(), RHS.begin());
}
DEMANGLE_NAMESPACE_END
#endif

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//===--- Utility.h ----------------------------------------------*- 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-FileCopyrightText: Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Provide some utility classes for use in the demangler(s).
//
//===----------------------------------------------------------------------===//
#ifndef DEMANGLE_UTILITY_H
#define DEMANGLE_UTILITY_H
#include "StringView.h"
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <iterator>
#include <limits>
DEMANGLE_NAMESPACE_BEGIN
// Stream that AST nodes write their string representation into after the AST
// has been parsed.
class OutputStream {
char *Buffer;
size_t CurrentPosition;
size_t BufferCapacity;
// Ensure there is at least n more positions in buffer.
void grow(size_t N) {
if (N + CurrentPosition >= BufferCapacity) {
BufferCapacity *= 2;
if (BufferCapacity < N + CurrentPosition)
BufferCapacity = N + CurrentPosition;
Buffer = static_cast<char *>(std::realloc(Buffer, BufferCapacity));
if (Buffer == nullptr)
std::terminate();
}
}
void writeUnsigned(uint64_t N, bool isNeg = false) {
// Handle special case...
if (N == 0) {
*this << '0';
return;
}
char Temp[21];
char *TempPtr = std::end(Temp);
while (N) {
*--TempPtr = '0' + char(N % 10);
N /= 10;
}
// Add negative sign...
if (isNeg)
*--TempPtr = '-';
this->operator<<(StringView(TempPtr, std::end(Temp)));
}
public:
OutputStream(char *StartBuf, size_t Size)
: Buffer(StartBuf), CurrentPosition(0), BufferCapacity(Size) {}
OutputStream() = default;
void reset(char *Buffer_, size_t BufferCapacity_) {
CurrentPosition = 0;
Buffer = Buffer_;
BufferCapacity = BufferCapacity_;
}
/// If a ParameterPackExpansion (or similar type) is encountered, the offset
/// into the pack that we're currently printing.
unsigned CurrentPackIndex = std::numeric_limits<unsigned>::max();
unsigned CurrentPackMax = std::numeric_limits<unsigned>::max();
OutputStream &operator+=(StringView R) {
size_t Size = R.size();
if (Size == 0)
return *this;
grow(Size);
std::memmove(Buffer + CurrentPosition, R.begin(), Size);
CurrentPosition += Size;
return *this;
}
OutputStream &operator+=(char C) {
grow(1);
Buffer[CurrentPosition++] = C;
return *this;
}
OutputStream &operator<<(StringView R) { return (*this += R); }
OutputStream &operator<<(char C) { return (*this += C); }
OutputStream &operator<<(long long N) {
if (N < 0)
writeUnsigned(static_cast<unsigned long long>(-N), true);
else
writeUnsigned(static_cast<unsigned long long>(N));
return *this;
}
OutputStream &operator<<(unsigned long long N) {
writeUnsigned(N, false);
return *this;
}
OutputStream &operator<<(long N) {
return this->operator<<(static_cast<long long>(N));
}
OutputStream &operator<<(unsigned long N) {
return this->operator<<(static_cast<unsigned long long>(N));
}
OutputStream &operator<<(int N) {
return this->operator<<(static_cast<long long>(N));
}
OutputStream &operator<<(unsigned int N) {
return this->operator<<(static_cast<unsigned long long>(N));
}
size_t getCurrentPosition() const { return CurrentPosition; }
void setCurrentPosition(size_t NewPos) { CurrentPosition = NewPos; }
char back() const {
return CurrentPosition ? Buffer[CurrentPosition - 1] : '\0';
}
bool empty() const { return CurrentPosition == 0; }
char *getBuffer() { return Buffer; }
char *getBufferEnd() { return Buffer + CurrentPosition - 1; }
size_t getBufferCapacity() { return BufferCapacity; }
};
template <class T> class SwapAndRestore {
T &Restore;
T OriginalValue;
bool ShouldRestore = true;
public:
SwapAndRestore(T &Restore_) : SwapAndRestore(Restore_, Restore_) {}
SwapAndRestore(T &Restore_, T NewVal)
: Restore(Restore_), OriginalValue(Restore) {
Restore = std::move(NewVal);
}
~SwapAndRestore() {
if (ShouldRestore)
Restore = std::move(OriginalValue);
}
void shouldRestore(bool ShouldRestore_) { ShouldRestore = ShouldRestore_; }
void restoreNow(bool Force) {
if (!Force && !ShouldRestore)
return;
Restore = std::move(OriginalValue);
ShouldRestore = false;
}
SwapAndRestore(const SwapAndRestore &) = delete;
SwapAndRestore &operator=(const SwapAndRestore &) = delete;
};
inline bool initializeOutputStream(char *Buf, size_t *N, OutputStream &S,
size_t InitSize) {
size_t BufferSize;
if (Buf == nullptr) {
Buf = static_cast<char *>(std::malloc(InitSize));
if (Buf == nullptr)
return false;
BufferSize = InitSize;
} else
BufferSize = *N;
S.reset(Buf, BufferSize);
return true;
}
DEMANGLE_NAMESPACE_END
#endif

3
src/common/CMakeLists.txt
View file

@ -38,6 +38,7 @@ add_library(common STATIC
common_precompiled_headers.h
common_types.h
concepts.h
demangle.h
div_ceil.h
dynamic_library.cpp
dynamic_library.h
@ -175,7 +176,7 @@ endif()
create_target_directory_groups(common)
target_link_libraries(common PUBLIC ${Boost_LIBRARIES} fmt::fmt microprofile Threads::Threads)
target_link_libraries(common PRIVATE lz4::lz4 zstd::zstd)
target_link_libraries(common PRIVATE lz4::lz4 zstd::zstd demangle)
if (YUZU_USE_PRECOMPILED_HEADERS)
target_precompile_headers(common PRIVATE precompiled_headers.h)

33
src/common/demangle.h Normal file
View file

@ -0,0 +1,33 @@
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <string>
namespace llvm {
char* itaniumDemangle(const char* mangled_name, char* buf, size_t* n, int* status);
}
namespace Common {
std::string DemangleSymbol(const std::string& mangled) {
auto is_itanium = [](const std::string& name) -> bool {
// A valid Itanium encoding requires 1-4 leading underscores, followed by 'Z'.
auto pos = name.find_first_not_of('_');
return pos > 0 && pos <= 4 && name[pos] == 'Z';
};
char* demangled = nullptr;
if (is_itanium(mangled)) {
demangled = llvm::itaniumDemangle(mangled.c_str(), nullptr, nullptr, nullptr);
}
if (!demangled) {
return mangled;
}
std::string ret = demangled;
std::free(demangled);
return ret;
}
} // namespace Common

18
src/core/arm/arm_interface.cpp
View file

@ -7,8 +7,10 @@
#include <map>
#include <optional>
#include "common/bit_field.h"
#include "common/common_types.h"
#include "common/demangle.h"
#include "common/logging/log.h"
#include "core/arm/arm_interface.h"
#include "core/arm/symbols.h"
@ -71,20 +73,8 @@ void ARM_Interface::SymbolicateBacktrace(Core::System& system, std::vector<Backt
const auto symbol_set = symbols.find(entry.module);
if (symbol_set != symbols.end()) {
const auto symbol = Symbols::GetSymbolName(symbol_set->second, entry.offset);
if (symbol.has_value()) {
#ifdef _MSC_VER
// TODO(DarkLordZach): Add demangling of symbol names.
entry.name = *symbol;
#else
int status{-1};
char* demangled{abi::__cxa_demangle(symbol->c_str(), nullptr, nullptr, &status)};
if (status == 0 && demangled != nullptr) {
entry.name = demangled;
std::free(demangled);
} else {
entry.name = *symbol;
}
#endif
if (symbol) {
entry.name = Common::DemangleSymbol(*symbol);
}
}
}