mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-12 13:32:05 +00:00
135 lines
4.3 KiB
C++
135 lines
4.3 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>
|
|
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
#include <stratosphere/windows.hpp>
|
|
#elif defined(ATMOSPHERE_OS_LINUX) || defined(ATMOSPHERE_OS_MACOS)
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
namespace ams::diag::impl {
|
|
|
|
namespace {
|
|
|
|
#if defined(ATMOSPHERE_ARCH_X64)
|
|
struct StackFrame {
|
|
u64 fp; /* rbp */
|
|
u64 lr; /* rip */
|
|
};
|
|
#elif defined(ATMOSPHERE_ARCH_X86)
|
|
struct StackFrame {
|
|
u32 fp; /* ebp */
|
|
u32 lr; /* eip */
|
|
}
|
|
#elif defined(ATMOSPHERE_ARCH_ARM64)
|
|
struct StackFrame {
|
|
u64 fp;
|
|
u64 lr;
|
|
};
|
|
#elif defined(ATMOSPHERE_ARCH_ARM)
|
|
struct StackFrame {
|
|
u32 fp;
|
|
u32 lr;
|
|
}
|
|
#else
|
|
#error "Unknown architecture for generic backtrace."
|
|
#endif
|
|
|
|
bool TryRead(os::NativeHandle native_handle, void *dst, size_t size, const void *address) {
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
return ::ReadProcessMemory(native_handle, address, dst, size, nullptr);
|
|
#elif defined(ATMOSPHERE_OS_LINUX) || defined(ATMOSPHERE_OS_MACOS)
|
|
s32 ret;
|
|
do {
|
|
ret = ::write(native_handle, address, size);
|
|
} while (ret < 0 && errno == EINTR);
|
|
|
|
if (ret < 0) {
|
|
return false;
|
|
}
|
|
|
|
std::memcpy(dst, address, size);
|
|
return true;
|
|
#else
|
|
#error "Unknown OS for Backtrace native handle"
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
NOINLINE void Backtrace::Initialize() {
|
|
/* Clear our size. */
|
|
m_index = 0;
|
|
m_size = 0;
|
|
|
|
/* Get the base frame pointer. */
|
|
const void *cur_fp = __builtin_frame_address(0);
|
|
|
|
/* Try to read stack frames, until we run out. */
|
|
#if defined(ATMOSPHERE_OS_WINDOWS)
|
|
const os::NativeHandle native_handle = ::GetCurrentProcess();
|
|
#elif defined(ATMOSPHERE_OS_LINUX) || defined(ATMOSPHERE_OS_MACOS)
|
|
os::NativeHandle pipe_handles[2];
|
|
s32 nret;
|
|
do { nret = ::pipe(pipe_handles); } while (nret < 0 && errno == EINTR);
|
|
if (nret < 0) { return; }
|
|
do { nret = ::fcntl(pipe_handles[0], F_SETFL, O_NONBLOCK); } while (nret < 0 && errno == EINTR);
|
|
if (nret < 0) { return; }
|
|
do { nret = ::fcntl(pipe_handles[1], F_SETFL, O_NONBLOCK); } while (nret < 0 && errno == EINTR);
|
|
if (nret < 0) { return; }
|
|
ON_SCOPE_EXIT {
|
|
do { nret = ::close(pipe_handles[0]); } while (nret < 0 && errno == EINTR);
|
|
do { nret = ::close(pipe_handles[1]); } while (nret < 0 && errno == EINTR);
|
|
};
|
|
const os::NativeHandle native_handle = pipe_handles[1];
|
|
if (native_handle < 0) { return; }
|
|
#else
|
|
#error "Unknown OS for Backtrace native handle"
|
|
#endif
|
|
|
|
StackFrame frame;
|
|
while (m_size < BacktraceEntryCountMax) {
|
|
/* Clear the frame. */
|
|
frame = {};
|
|
|
|
/* Read the next frame. */
|
|
if (!TryRead(native_handle, std::addressof(frame), sizeof(frame), cur_fp)) {
|
|
break;
|
|
}
|
|
|
|
/* Add the return address. */
|
|
m_backtrace_addresses[m_size++] = reinterpret_cast<void *>(frame.lr);
|
|
|
|
/* Set the next fp. */
|
|
cur_fp = reinterpret_cast<const void *>(frame.fp);
|
|
}
|
|
}
|
|
|
|
bool Backtrace::Step() {
|
|
return (++m_index) < m_size;
|
|
}
|
|
|
|
uintptr_t Backtrace::GetStackPointer() const {
|
|
return 0;
|
|
}
|
|
|
|
uintptr_t Backtrace::GetReturnAddress() const {
|
|
return reinterpret_cast<uintptr_t>(m_backtrace_addresses[m_index]);
|
|
}
|
|
|
|
}
|