mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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267 lines
12 KiB
C++
267 lines
12 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stratosphere.hpp>
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#include "creport_threads.hpp"
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#include "creport_modules.hpp"
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namespace ams::creport {
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namespace {
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/* Convenience definitions. */
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constexpr u32 LibnxThreadVarMagic = util::FourCC<'!','T','V','$'>::Code;
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constexpr u32 DumpedThreadInfoMagic = util::FourCC<'D','T','I','2'>::Code;
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/* Types. */
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template<typename T>
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struct StackFrame {
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T fp;
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T lr;
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};
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/* Helpers. */
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template<typename T>
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void ReadStackTrace(size_t *out_trace_size, u64 *out_trace, size_t max_out_trace_size, Handle debug_handle, u64 fp) {
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size_t trace_size = 0;
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u64 cur_fp = fp;
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for (size_t i = 0; i < max_out_trace_size; i++) {
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/* Validate the current frame. */
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if (cur_fp == 0 || (cur_fp % sizeof(T) != 0)) {
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break;
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}
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/* Read a new frame. */
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StackFrame<T> cur_frame;
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if (R_FAILED(svcReadDebugProcessMemory(&cur_frame, debug_handle, cur_fp, sizeof(cur_frame)))) {
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break;
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}
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/* Advance to the next frame. */
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out_trace[trace_size++] = cur_frame.lr;
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cur_fp = cur_frame.fp;
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}
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*out_trace_size = trace_size;
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}
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}
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void ThreadList::SaveToFile(ScopedFile &file) {
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file.WriteFormat("Number of Threads: %02zu\n", this->thread_count);
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for (size_t i = 0; i < this->thread_count; i++) {
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file.WriteFormat("Threads[%02zu]:\n", i);
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this->threads[i].SaveToFile(file);
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}
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}
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void ThreadInfo::SaveToFile(ScopedFile &file) {
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file.WriteFormat(" Thread ID: %016lx\n", this->thread_id);
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if (std::strcmp(this->name, "") != 0) {
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file.WriteFormat(" Thread Name: %s\n", this->name);
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}
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if (this->stack_top != 0) {
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file.WriteFormat(" Stack Region: %016lx-%016lx\n", this->stack_bottom, this->stack_top);
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}
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file.WriteFormat(" Registers:\n");
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{
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for (unsigned int i = 0; i <= 28; i++) {
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file.WriteFormat(" X[%02u]: %s\n", i, this->module_list->GetFormattedAddressString(this->context.cpu_gprs[i].x));
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}
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file.WriteFormat(" FP: %s\n", this->module_list->GetFormattedAddressString(this->context.fp));
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file.WriteFormat(" LR: %s\n", this->module_list->GetFormattedAddressString(this->context.lr));
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file.WriteFormat(" SP: %s\n", this->module_list->GetFormattedAddressString(this->context.sp));
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file.WriteFormat(" PC: %s\n", this->module_list->GetFormattedAddressString(this->context.pc.x));
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}
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if (this->stack_trace_size != 0) {
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file.WriteFormat(" Stack Trace:\n");
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for (size_t i = 0; i < this->stack_trace_size; i++) {
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file.WriteFormat(" ReturnAddress[%02zu]: %s\n", i, this->module_list->GetFormattedAddressString(this->stack_trace[i]));
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}
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}
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if (this->stack_dump_base != 0) {
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file.WriteFormat(" Stack Dump: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
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for (size_t i = 0; i < 0x10; i++) {
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const size_t ofs = i * 0x10;
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file.WriteFormat(" %012lx %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
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this->stack_dump_base + ofs, this->stack_dump[ofs + 0], this->stack_dump[ofs + 1], this->stack_dump[ofs + 2], this->stack_dump[ofs + 3], this->stack_dump[ofs + 4], this->stack_dump[ofs + 5], this->stack_dump[ofs + 6], this->stack_dump[ofs + 7],
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this->stack_dump[ofs + 8], this->stack_dump[ofs + 9], this->stack_dump[ofs + 10], this->stack_dump[ofs + 11], this->stack_dump[ofs + 12], this->stack_dump[ofs + 13], this->stack_dump[ofs + 14], this->stack_dump[ofs + 15]);
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}
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}
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if (this->tls_address != 0) {
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file.WriteFormat(" TLS Address: %016lx\n", this->tls_address);
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file.WriteFormat(" TLS Dump: 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f\n");
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for (size_t i = 0; i < 0x10; i++) {
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const size_t ofs = i * 0x10;
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file.WriteFormat(" %012lx %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
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this->tls_address + ofs, this->tls[ofs + 0], this->tls[ofs + 1], this->tls[ofs + 2], this->tls[ofs + 3], this->tls[ofs + 4], this->tls[ofs + 5], this->tls[ofs + 6], this->tls[ofs + 7],
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this->tls[ofs + 8], this->tls[ofs + 9], this->tls[ofs + 10], this->tls[ofs + 11], this->tls[ofs + 12], this->tls[ofs + 13], this->tls[ofs + 14], this->tls[ofs + 15]);
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}
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}
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}
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bool ThreadInfo::ReadFromProcess(Handle debug_handle, ThreadTlsMap &tls_map, u64 thread_id, bool is_64_bit) {
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/* Set thread id. */
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this->thread_id = thread_id;
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/* Verify that the thread is running or waiting. */
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{
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u64 _;
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u32 _thread_state;
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if (R_FAILED(svcGetDebugThreadParam(&_, &_thread_state, debug_handle, this->thread_id, DebugThreadParam_State))) {
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return false;
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}
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const svc::ThreadState thread_state = static_cast<svc::ThreadState>(_thread_state);
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if (thread_state != svc::ThreadState_Waiting && thread_state != svc::ThreadState_Running) {
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return false;
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}
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}
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/* Get the thread context. */
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if (R_FAILED(svcGetDebugThreadContext(&this->context, debug_handle, this->thread_id, svc::ThreadContextFlag_All))) {
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return false;
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}
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/* In aarch32 mode svcGetDebugThreadContext does not set the LR, FP, and SP registers correctly. */
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if (!is_64_bit) {
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this->context.fp = this->context.cpu_gprs[11].x;
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this->context.sp = this->context.cpu_gprs[13].x;
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this->context.lr = this->context.cpu_gprs[14].x;
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}
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/* Read TLS, if present. */
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/* TODO: struct definitions for nnSdk's ThreadType/TLS Layout? */
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this->tls_address = 0;
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if (tls_map.GetThreadTls(std::addressof(this->tls_address), thread_id)) {
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u8 thread_tls[0x200];
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if (R_SUCCEEDED(svcReadDebugProcessMemory(thread_tls, debug_handle, this->tls_address, sizeof(thread_tls)))) {
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std::memcpy(this->tls, thread_tls, sizeof(this->tls));
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/* Try to detect libnx threads, and skip name parsing then. */
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if (*(reinterpret_cast<u32 *>(&thread_tls[0x1E0])) != LibnxThreadVarMagic) {
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u8 thread_type[0x1D0];
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const u64 thread_type_addr = *(reinterpret_cast<u64 *>(&thread_tls[0x1F8]));
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if (R_SUCCEEDED(svcReadDebugProcessMemory(thread_type, debug_handle, thread_type_addr, sizeof(thread_type)))) {
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/* Check thread name is actually at thread name. */
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static_assert(0x1A8 - 0x188 == NameLengthMax, "NameLengthMax definition!");
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if (*(reinterpret_cast<u64 *>(&thread_type[0x1A8])) == thread_type_addr + 0x188) {
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std::memcpy(this->name, thread_type + 0x188, NameLengthMax);
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}
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}
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}
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}
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}
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/* Parse stack extents and dump stack. */
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this->TryGetStackInfo(debug_handle);
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/* Dump stack trace. */
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if (is_64_bit) {
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ReadStackTrace<u64>(&this->stack_trace_size, this->stack_trace, StackTraceSizeMax, debug_handle, this->context.fp);
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} else {
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ReadStackTrace<u32>(&this->stack_trace_size, this->stack_trace, StackTraceSizeMax, debug_handle, this->context.fp);
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}
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return true;
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}
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void ThreadInfo::TryGetStackInfo(Handle debug_handle) {
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/* Query stack region. */
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MemoryInfo mi;
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u32 pi;
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, this->context.sp))) {
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return;
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}
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/* Check if sp points into the stack. */
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if (mi.type != MemType_MappedMemory) {
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/* It's possible that sp is below the stack... */
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if (R_FAILED(svcQueryDebugProcessMemory(&mi, &pi, debug_handle, mi.addr + mi.size)) || mi.type != MemType_MappedMemory) {
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return;
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}
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}
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/* Save stack extents. */
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this->stack_bottom = mi.addr;
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this->stack_top = mi.addr + mi.size;
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/* We always want to dump 0x100 of stack, starting from the lowest 0x10-byte aligned address below the stack pointer. */
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/* Note: if the stack pointer is below the stack bottom, we will start dumping from the stack bottom. */
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this->stack_dump_base = std::min(std::max(this->context.sp & ~0xFul, this->stack_bottom), this->stack_top - sizeof(this->stack_dump));
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/* Try to read stack. */
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if (R_FAILED(svcReadDebugProcessMemory(this->stack_dump, debug_handle, this->stack_dump_base, sizeof(this->stack_dump)))) {
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this->stack_dump_base = 0;
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}
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}
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void ThreadInfo::DumpBinary(ScopedFile &file) {
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/* Dump id and context. */
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file.Write(&this->thread_id, sizeof(this->thread_id));
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file.Write(&this->context, sizeof(this->context));
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/* Dump TLS info and name. */
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file.Write(&this->tls_address, sizeof(this->tls_address));
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file.Write(&this->tls, sizeof(this->tls));
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file.Write(&this->name, sizeof(this->name));
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/* Dump stack extents and stack dump. */
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file.Write(&this->stack_bottom, sizeof(this->stack_bottom));
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file.Write(&this->stack_top, sizeof(this->stack_top));
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file.Write(&this->stack_dump_base, sizeof(this->stack_dump_base));
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file.Write(&this->stack_dump, sizeof(this->stack_dump));
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/* Dump stack trace. */
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{
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const u64 sts = this->stack_trace_size;
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file.Write(&sts, sizeof(sts));
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}
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file.Write(this->stack_trace, this->stack_trace_size);
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}
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void ThreadList::DumpBinary(ScopedFile &file, u64 crashed_thread_id) {
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const u32 magic = DumpedThreadInfoMagic;
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const u32 count = this->thread_count;
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file.Write(&magic, sizeof(magic));
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file.Write(&count, sizeof(count));
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file.Write(&crashed_thread_id, sizeof(crashed_thread_id));
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for (size_t i = 0; i < this->thread_count; i++) {
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this->threads[i].DumpBinary(file);
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}
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}
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void ThreadList::ReadFromProcess(Handle debug_handle, ThreadTlsMap &tls_map, bool is_64_bit) {
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this->thread_count = 0;
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/* Get thread list. */
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s32 num_threads;
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u64 thread_ids[ThreadCountMax];
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{
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if (R_FAILED(svc::GetThreadList(&num_threads, thread_ids, ThreadCountMax, debug_handle))) {
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return;
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}
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num_threads = std::min(size_t(num_threads), ThreadCountMax);
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}
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/* Parse thread infos. */
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for (s32 i = 0; i < num_threads; i++) {
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if (this->threads[this->thread_count].ReadFromProcess(debug_handle, tls_map, thread_ids[i], is_64_bit)) {
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this->thread_count++;
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}
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}
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}
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}
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