Merge pull request #9613 from Kelebek1/demangle

Add stacktrace symbol demangling

src/common/CMakeLists.txt

@@ -38,6 +38,8 @@ add_library(common STATIC
     common_precompiled_headers.h
     common_types.h
     concepts.h
+    demangle.cpp
+    demangle.h
     div_ceil.h
     dynamic_library.cpp
     dynamic_library.h
@@ -175,7 +177,7 @@ 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)

src/common/demangle.cpp

@@ -0,0 +1,37 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "common/demangle.h"
+#include "common/scope_exit.h"
+
+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 && pos < name.size() && name[pos] == 'Z';
+    };
+
+    if (mangled.empty()) {
+        return mangled;
+    }
+
+    char* demangled = nullptr;
+    SCOPE_EXIT({ std::free(demangled); });
+
+    if (is_itanium(mangled)) {
+        demangled = llvm::itaniumDemangle(mangled.c_str(), nullptr, nullptr, nullptr);
+    }
+
+    if (!demangled) {
+        return mangled;
+    }
+    return demangled;
+}
+
+} // namespace Common

src/common/demangle.h

@@ -0,0 +1,12 @@
+// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+
+namespace Common {
+
+std::string DemangleSymbol(const std::string& mangled);
+
+} // namespace Common