mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 21:02:03 +00:00
282 lines
11 KiB
C++
282 lines
11 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
#include "diag_symbol_impl.hpp"
|
|
|
|
#define PACKAGE "stratosphere"
|
|
#define PACKAGE_VERSION STRINGIFY(ATMOSPHERE_RELEASE_VERSION_MAJOR.ATMOSPHERE_RELEASE_VERSION_MINOR.ATMOSPHERE_RELEASE_VERSION_MICRO)
|
|
|
|
/* msys2 mingw64 puts headers inside binutils/ */
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
#include <binutils/bfd.h>
|
|
#include <psapi.h>
|
|
#else
|
|
#include <bfd.h>
|
|
#endif
|
|
|
|
#if defined(ATMOSPHERE_OS_LINUX)
|
|
#include <unistd.h>
|
|
#include <dlfcn.h>
|
|
#include <link.h>
|
|
|
|
extern "C" char __init_array_start;
|
|
#endif
|
|
|
|
#define HAVE_DECL_BASENAME 1
|
|
#include <libiberty/demangle.h>
|
|
|
|
namespace ams::diag::impl {
|
|
|
|
namespace {
|
|
|
|
class BfdHelper {
|
|
private:
|
|
bfd *m_handle;
|
|
asymbol **m_symbol;
|
|
size_t m_num_symbol;
|
|
size_t m_num_func_symbol;
|
|
const char *m_module_name;
|
|
uintptr_t m_module_address;
|
|
size_t m_module_size;
|
|
private:
|
|
BfdHelper() : m_handle(nullptr), m_symbol(nullptr), m_module_name(nullptr) {
|
|
/* Get the current executable name. */
|
|
char exe_path[4_KB] = {};
|
|
GetExecutablePath(exe_path, sizeof(exe_path));
|
|
|
|
/* Open bfd. */
|
|
bfd *b = ::bfd_openr(exe_path, 0);
|
|
if (b == nullptr) {
|
|
return;
|
|
}
|
|
auto bfd_guard = SCOPE_GUARD { ::bfd_close(b); };
|
|
|
|
/* Check the format. */
|
|
if (!::bfd_check_format(b, bfd_object)) {
|
|
return;
|
|
}
|
|
|
|
/* Verify the file has symbols. */
|
|
if ((bfd_get_file_flags(b) & HAS_SYMS) == 0) {
|
|
return;
|
|
}
|
|
|
|
/* Read the symbols. */
|
|
unsigned int _;
|
|
void *symbol_table;
|
|
s64 num_symbols = bfd_read_minisymbols(b, false, std::addressof(symbol_table), std::addressof(_));
|
|
if (num_symbols == 0) {
|
|
num_symbols = bfd_read_minisymbols(b, true, std::addressof(symbol_table), std::addressof(_));
|
|
if (num_symbols < 0) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* We successfully got the symbol table. */
|
|
bfd_guard.Cancel();
|
|
|
|
m_handle = b;
|
|
m_symbol = reinterpret_cast<asymbol **>(symbol_table);
|
|
m_num_symbol = static_cast<size_t>(num_symbols);
|
|
|
|
/* Sort the symbol table. */
|
|
std::sort(m_symbol + 0, m_symbol + m_num_symbol, [] (asymbol *lhs, asymbol *rhs) {
|
|
const bool l_func = (lhs->flags & BSF_FUNCTION);
|
|
const bool r_func = (rhs->flags & BSF_FUNCTION);
|
|
if (l_func == r_func) {
|
|
return bfd_asymbol_value(lhs) < bfd_asymbol_value(rhs);
|
|
} else {
|
|
return l_func;
|
|
}
|
|
});
|
|
|
|
/* Determine number of function symbols. */
|
|
m_num_func_symbol = 0;
|
|
for (size_t i = 0; i < m_num_symbol; ++i) {
|
|
if ((m_symbol[i]->flags & BSF_FUNCTION) == 0) {
|
|
m_num_func_symbol = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
for (int i = std::strlen(exe_path) - 1; i >= 0; --i) {
|
|
if (exe_path[i] == '/' || exe_path[i] == '\\') {
|
|
m_module_name = strdup(exe_path + i + 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* Get our module base/size. */
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
{
|
|
MODULEINFO module_info;
|
|
if (::GetModuleInformation(::GetCurrentProcess(), ::GetModuleHandleA(nullptr), std::addressof(module_info), sizeof(module_info))) {
|
|
m_module_address = reinterpret_cast<uintptr_t>(module_info.lpBaseOfDll);
|
|
m_module_size = static_cast<size_t>(module_info.SizeOfImage);
|
|
}
|
|
}
|
|
#elif defined(ATMOSPHERE_OS_LINUX)
|
|
{
|
|
m_module_address = _r_debug.r_map->l_addr;
|
|
|
|
m_module_size = reinterpret_cast<uintptr_t>(std::addressof(__init_array_start)) - m_module_address;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
~BfdHelper() {
|
|
if (m_symbol != nullptr) {
|
|
std::free(m_symbol);
|
|
}
|
|
if (m_handle != nullptr) {
|
|
::bfd_close(m_handle);
|
|
}
|
|
}
|
|
public:
|
|
static BfdHelper &GetInstance() {
|
|
AMS_FUNCTION_LOCAL_STATIC(BfdHelper, s_bfd_helper_instance);
|
|
return s_bfd_helper_instance;
|
|
}
|
|
private:
|
|
size_t GetSymbolSizeImpl(asymbol **symbol) const {
|
|
/* Do our best to guess. */
|
|
const auto vma = bfd_asymbol_value(*symbol);
|
|
if (symbol != m_symbol + m_num_func_symbol - 1) {
|
|
return bfd_asymbol_value(*(symbol + 1)) - vma;
|
|
} else {
|
|
const auto *sec = (*symbol)->section;
|
|
return (sec->vma + sec->size) - vma;
|
|
}
|
|
}
|
|
|
|
std::ptrdiff_t GetSymbolAddressDisplacement(uintptr_t address) const {
|
|
std::ptrdiff_t displacement = 0;
|
|
|
|
if (m_module_address <= address && address < m_module_address + m_module_size) {
|
|
displacement = m_module_address;
|
|
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
{
|
|
#if defined(__MINGW64__)
|
|
displacement -= UINT64_C(0x140000000);
|
|
#elif defined(__MINGW32__)
|
|
displacement -= UINT64_C(0x400000);
|
|
#else
|
|
#error "Unknown build context for windows module base!"
|
|
#endif
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return displacement;
|
|
}
|
|
|
|
asymbol **GetBestSymbol(uintptr_t address) const {
|
|
/* Adjust the symbol address. */
|
|
address -= this->GetSymbolAddressDisplacement(address);
|
|
|
|
asymbol **best_symbol = std::lower_bound(m_symbol + 0, m_symbol + m_num_func_symbol, address, [](asymbol *lhs, uintptr_t rhs) {
|
|
return bfd_asymbol_value(lhs) < rhs;
|
|
});
|
|
|
|
if (best_symbol == m_symbol + m_num_func_symbol) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (bfd_asymbol_value(*best_symbol) != address && best_symbol > m_symbol) {
|
|
--best_symbol;
|
|
}
|
|
|
|
const auto vma = bfd_asymbol_value(*best_symbol);
|
|
const auto end = vma + this->GetSymbolSizeImpl(best_symbol);
|
|
|
|
if (vma <= address && address < end) {
|
|
return best_symbol;
|
|
} else {
|
|
return nullptr;
|
|
}
|
|
}
|
|
public:
|
|
uintptr_t GetSymbolName(char *dst, size_t dst_size, uintptr_t address) const {
|
|
/* Get the symbol. */
|
|
auto **symbol = this->GetBestSymbol(address);
|
|
if (symbol == nullptr) {
|
|
return 0;
|
|
}
|
|
|
|
/* Print the symbol. */
|
|
const char *name = bfd_asymbol_name(*symbol);
|
|
if (auto *demangled = bfd_demangle(m_handle, name, DMGL_ANSI | DMGL_PARAMS); demangled != nullptr) {
|
|
util::TSNPrintf(dst, dst_size, "%s", demangled);
|
|
std::free(demangled);
|
|
} else {
|
|
util::TSNPrintf(dst, dst_size, "%s", name);
|
|
}
|
|
|
|
return bfd_asymbol_value(*symbol) + this->GetSymbolAddressDisplacement(address);
|
|
}
|
|
|
|
size_t GetSymbolSize(uintptr_t address) const {
|
|
/* Get the symbol. */
|
|
auto **symbol = this->GetBestSymbol(address);
|
|
if (symbol == nullptr) {
|
|
return 0;
|
|
}
|
|
|
|
return this->GetSymbolSizeImpl(symbol);
|
|
}
|
|
private:
|
|
static void GetExecutablePath(char *dst, size_t dst_size) {
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
{
|
|
/* Get the module file name. */
|
|
wchar_t module_file_name[0x1000];
|
|
if (::GetModuleFileNameW(0, module_file_name, util::size(module_file_name)) == 0) {
|
|
dst[0] = 0;
|
|
return;
|
|
}
|
|
|
|
/* Convert to utf-8. */
|
|
const auto res = ::WideCharToMultiByte(CP_UTF8, 0, module_file_name, -1, dst, dst_size, nullptr, nullptr);
|
|
if (res == 0) {
|
|
dst[0] = 0;
|
|
return;
|
|
}
|
|
}
|
|
#elif defined(ATMOSPHERE_OS_LINUX)
|
|
{
|
|
if (::readlink("/proc/self/exe", dst, dst_size) == -1) {
|
|
dst[0] = 0;
|
|
return;
|
|
}
|
|
}
|
|
#else
|
|
#error "Unknown OS for BfdHelper GetExecutablePath"
|
|
#endif
|
|
}
|
|
};
|
|
|
|
}
|
|
|
|
uintptr_t GetSymbolNameImpl(char *dst, size_t dst_size, uintptr_t address) {
|
|
return BfdHelper::GetInstance().GetSymbolName(dst, dst_size, address);
|
|
}
|
|
|
|
size_t GetSymbolSizeImpl(uintptr_t address) {
|
|
return BfdHelper::GetInstance().GetSymbolSize(address);
|
|
}
|
|
|
|
}
|