mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-24 15:50:29 +01:00
619 lines
24 KiB
C++
619 lines
24 KiB
C++
/*
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* Copyright (c) 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 "dmnt2_debug_log.hpp"
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#include "dmnt2_debug_process.hpp"
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namespace ams::dmnt {
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namespace {
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s32 SignExtend(u32 value, u32 bits) {
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return static_cast<s32>(value << (32 - bits)) >> (32 - bits);
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}
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}
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Result DebugProcess::Attach(os::ProcessId process_id, bool start_process) {
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/* Attach to the process. */
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R_TRY(svc::DebugActiveProcess(std::addressof(m_debug_handle), process_id.value));
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/* If necessary, start the process. */
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if (start_process) {
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R_ABORT_UNLESS(pm::dmnt::StartProcess(process_id));
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}
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/* Collect initial information. */
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R_TRY(this->Start());
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/* Get the attached modules. */
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R_TRY(this->CollectModules());
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/* Get our process id. */
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u64 pid_value = 0;
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svc::GetProcessId(std::addressof(pid_value), m_debug_handle);
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m_process_id = { pid_value };
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/* Get process info. */
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this->CollectProcessInfo();
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R_SUCCEED();
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}
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void DebugProcess::Detach() {
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if (m_is_valid) {
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m_software_breakpoints.ClearAll();
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m_hardware_breakpoints.ClearAll();
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m_hardware_watchpoints.ClearAll();
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R_ABORT_UNLESS(svc::CloseHandle(m_debug_handle));
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m_debug_handle = svc::InvalidHandle;
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}
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m_is_valid = false;
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}
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Result DebugProcess::Start() {
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/* Process the initial debug events. */
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s32 num_threads = 0;
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bool attached = false;
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while (num_threads == 0 || !attached) {
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/* Wait for debug events to be available. */
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s32 dummy_index;
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R_ABORT_UNLESS(svc::WaitSynchronization(std::addressof(dummy_index), std::addressof(m_debug_handle), 1, svc::WaitInfinite));
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/* Get debug event. */
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svc::DebugEventInfo d;
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R_ABORT_UNLESS(svc::GetDebugEvent(std::addressof(d), m_debug_handle));
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/* Handle the debug event. */
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switch (d.type) {
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case svc::DebugEvent_CreateProcess:
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{
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/* Set our create process info. */
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m_create_process_info = d.info.create_process;
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/* Cache our bools. */
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m_is_64_bit = (m_create_process_info.flags & svc::CreateProcessFlag_Is64Bit);
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m_is_64_bit_address_space = (m_create_process_info.flags & svc::CreateProcessFlag_AddressSpaceMask) == svc::CreateProcessFlag_AddressSpace64Bit;
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}
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break;
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case svc::DebugEvent_CreateThread:
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{
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++num_threads;
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if (const s32 index = this->ThreadCreate(d.thread_id); index >= 0) {
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const Result result = osdbg::InitializeThreadInfo(std::addressof(m_thread_infos[index]), m_debug_handle, std::addressof(m_create_process_info), std::addressof(d.info.create_thread));
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if (R_FAILED(result)) {
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AMS_DMNT2_GDB_LOG_WARN("DebugProcess::Start: InitializeThreadInfo(%lx) failed: %08x\n", d.thread_id, result.GetValue());
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}
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}
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}
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break;
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case svc::DebugEvent_ExitThread:
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{
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--num_threads;
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this->ThreadExit(d.thread_id);
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}
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break;
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case svc::DebugEvent_Exception:
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{
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if (d.info.exception.type == svc::DebugException_DebuggerAttached) {
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attached = true;
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}
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}
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break;
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default:
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break;
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}
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}
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/* Set ourselves as valid. */
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m_is_valid = true;
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this->SetDebugBreaked();
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R_SUCCEED();
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}
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s32 DebugProcess::ThreadCreate(u64 thread_id) {
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for (size_t i = 0; i < ThreadCountMax; ++i) {
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if (!m_thread_valid[i]) {
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m_thread_valid[i] = true;
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m_thread_ids[i] = thread_id;
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this->SetLastThreadId(thread_id);
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this->SetLastSignal(GdbSignal_BreakpointTrap);
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++m_thread_count;
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return i;
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}
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}
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return -1;
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}
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void DebugProcess::ThreadExit(u64 thread_id) {
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for (size_t i = 0; i < ThreadCountMax; ++i) {
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if (m_thread_valid[i] && m_thread_ids[i] == thread_id) {
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m_thread_valid[i] = false;
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m_thread_ids[i] = 0;
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this->SetLastThreadId(thread_id);
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this->SetLastSignal(GdbSignal_BreakpointTrap);
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--m_thread_count;
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break;
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}
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}
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}
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Result DebugProcess::CollectModules() {
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/* Reset our module count. */
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m_module_count = 0;
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/* Traverse the address space, looking for modules. */
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uintptr_t address = 0;
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while (true) {
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/* Query the current address. */
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svc::MemoryInfo memory_info;
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svc::PageInfo page_info;
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if (R_SUCCEEDED(svc::QueryDebugProcessMemory(std::addressof(memory_info), std::addressof(page_info), m_debug_handle, address))) {
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if (memory_info.permission == svc::MemoryPermission_ReadExecute && (memory_info.state == svc::MemoryState_Code || memory_info.state == svc::MemoryState_AliasCode)) {
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/* Check that we can add the module. */
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AMS_ABORT_UNLESS(m_module_count < ModuleCountMax);
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/* Get module definition. */
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auto &module = m_module_definitions[m_module_count++];
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/* Set module address/size. */
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module.SetAddressSize(memory_info.base_address, memory_info.size);
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/* Get module name buffer. */
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char *module_name = module.GetNameBuffer();
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module_name[0] = 0;
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/* Read module path. */
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struct {
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u32 zero;
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s32 path_length;
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char path[ModuleDefinition::PathLengthMax];
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} module_path;
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if (R_SUCCEEDED(this->ReadMemory(std::addressof(module_path), memory_info.base_address + memory_info.size, sizeof(module_path)))) {
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if (module_path.zero == 0 && module_path.path_length > 0) {
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std::memcpy(module_name, module_path.path, std::min<size_t>(ModuleDefinition::PathLengthMax, module_path.path_length));
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}
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} else {
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module_path.path_length = 0;
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}
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/* Truncate module name. */
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module_name[ModuleDefinition::PathLengthMax - 1] = 0;
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/* Set default module name start. */
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module.SetNameStart(0);
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/* Ignore leading directories. */
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for (size_t i = 0; i < std::min<size_t>(ModuleDefinition::PathLengthMax, module_path.path_length) && module_name[i] != 0; ++i) {
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if (module_name[i] == '/' || module_name[i] == '\\') {
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module.SetNameStart(i + 1);
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}
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}
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}
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}
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/* Check if we're done. */
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const uintptr_t next_address = memory_info.base_address + memory_info.size;
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if (memory_info.state == svc::MemoryState_Inaccessible) {
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break;
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}
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if (next_address <= address) {
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break;
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}
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address = next_address;
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}
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R_SUCCEED();
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}
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void DebugProcess::CollectProcessInfo() {
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/* Define helper for getting process info. */
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auto CollectProcessInfoImpl = [&](os::NativeHandle handle) -> Result {
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/* Collect all values. */
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R_TRY(svc::GetInfo(std::addressof(m_process_alias_address), svc::InfoType_AliasRegionAddress, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_alias_size), svc::InfoType_AliasRegionSize, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_heap_address), svc::InfoType_HeapRegionAddress, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_heap_size), svc::InfoType_HeapRegionSize, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_aslr_address), svc::InfoType_AslrRegionAddress, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_aslr_size), svc::InfoType_AslrRegionSize, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_stack_address), svc::InfoType_StackRegionAddress, handle, 0));
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R_TRY(svc::GetInfo(std::addressof(m_process_stack_size), svc::InfoType_StackRegionSize, handle, 0));
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if (m_program_location.program_id == ncm::InvalidProgramId) {
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R_TRY(svc::GetInfo(std::addressof(m_program_location.program_id.value), svc::InfoType_ProgramId, handle, 0));
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}
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u64 value;
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R_TRY(svc::GetInfo(std::addressof(value), svc::InfoType_IsApplication, handle, 0));
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m_is_application = value != 0;
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R_SUCCEED();
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};
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/* Get process info/status. */
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os::NativeHandle process_handle;
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if (R_FAILED(pm::dmnt::AtmosphereGetProcessInfo(std::addressof(process_handle), std::addressof(m_program_location), std::addressof(m_process_override_status), m_process_id))) {
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process_handle = os::InvalidNativeHandle;
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m_program_location = { ncm::InvalidProgramId, };
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m_process_override_status = {};
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}
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ON_SCOPE_EXIT { os::CloseNativeHandle(process_handle); };
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/* Try collecting from our debug handle, then the process handle. */
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if (R_FAILED(CollectProcessInfoImpl(m_debug_handle)) && R_FAILED(CollectProcessInfoImpl(process_handle))) {
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m_process_alias_address = 0;
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m_process_alias_size = 0;
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m_process_heap_address = 0;
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m_process_heap_size = 0;
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m_process_aslr_address = 0;
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m_process_aslr_size = 0;
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m_process_stack_address = 0;
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m_process_stack_size = 0;
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m_is_application = false;
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}
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}
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Result DebugProcess::GetThreadContext(svc::ThreadContext *out, u64 thread_id, u32 flags) {
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R_RETURN(svc::GetDebugThreadContext(out, m_debug_handle, thread_id, flags));
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}
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Result DebugProcess::SetThreadContext(const svc::ThreadContext *ctx, u64 thread_id, u32 flags) {
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R_RETURN(svc::SetDebugThreadContext(m_debug_handle, thread_id, ctx, flags));
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}
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Result DebugProcess::ReadMemory(void *dst, uintptr_t address, size_t size) {
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R_RETURN(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(dst), m_debug_handle, address, size));
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}
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Result DebugProcess::WriteMemory(const void *src, uintptr_t address, size_t size) {
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R_RETURN(svc::WriteDebugProcessMemory(m_debug_handle, reinterpret_cast<uintptr_t>(src), address, size));
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}
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Result DebugProcess::QueryMemory(svc::MemoryInfo *out, uintptr_t address) {
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svc::PageInfo dummy;
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R_RETURN(svc::QueryDebugProcessMemory(out, std::addressof(dummy), m_debug_handle, address));
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}
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Result DebugProcess::Continue() {
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AMS_DMNT2_GDB_LOG_DEBUG("DebugProcess::Continue() all\n");
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u64 thread_ids[] = { 0 };
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R_TRY(svc::ContinueDebugEvent(m_debug_handle, svc::ContinueFlag_ExceptionHandled | svc::ContinueFlag_EnableExceptionEvent | svc::ContinueFlag_ContinueAll, thread_ids, util::size(thread_ids)));
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m_continue_thread_id = 0;
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m_status = ProcessStatus_Running;
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this->SetLastThreadId(0);
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this->SetLastSignal(GdbSignal_Signal0);
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R_SUCCEED();
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}
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Result DebugProcess::Continue(u64 thread_id) {
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AMS_DMNT2_GDB_LOG_DEBUG("DebugProcess::Continue() thread_id=%lx\n", thread_id);
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u64 thread_ids[] = { thread_id };
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R_TRY(svc::ContinueDebugEvent(m_debug_handle, svc::ContinueFlag_ExceptionHandled | svc::ContinueFlag_EnableExceptionEvent, thread_ids, util::size(thread_ids)));
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m_continue_thread_id = thread_id;
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m_status = ProcessStatus_Running;
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this->SetLastThreadId(0);
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this->SetLastSignal(GdbSignal_Signal0);
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R_SUCCEED();
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}
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Result DebugProcess::Step() {
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AMS_DMNT2_GDB_LOG_DEBUG("DebugProcess::Step() all\n");
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R_RETURN(this->Step(this->GetLastThreadId()));
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}
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Result DebugProcess::Step(u64 thread_id) {
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AMS_DMNT2_GDB_LOG_DEBUG("DebugProcess::Step() thread_id=%lx\n", thread_id);
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/* Get the thread context. */
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svc::ThreadContext ctx;
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R_TRY(this->GetThreadContext(std::addressof(ctx), thread_id, svc::ThreadContextFlag_Control));
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/* Note that we're stepping. */
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m_stepping = true;
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if (m_use_hardware_single_step) {
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/* Set thread single step. */
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R_TRY(this->SetThreadContext(std::addressof(ctx), thread_id, svc::ThreadContextFlag_SetSingleStep));
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} else {
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/* Determine where we're stepping to. */
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u64 current_pc = ctx.pc;
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u64 step_target = 0;
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this->GetBranchTarget(ctx, thread_id, current_pc, step_target);
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/* Ensure we end with valid breakpoints. */
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auto bp_guard = SCOPE_GUARD { this->ClearStep(); };
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/* Set step breakpoint on current pc. */
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/* TODO: aarch32 breakpoints. */
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if (current_pc) {
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R_TRY(m_step_breakpoints.SetBreakPoint(current_pc, sizeof(u32), true));
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}
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if (step_target) {
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R_TRY(m_step_breakpoints.SetBreakPoint(step_target, sizeof(u32), true));
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}
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bp_guard.Cancel();
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}
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R_SUCCEED();
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}
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void DebugProcess::ClearStep() {
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/* If we should, clear our step breakpoints. */
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if (m_stepping) {
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m_step_breakpoints.ClearStep();
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m_stepping = false;
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}
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}
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Result DebugProcess::Break() {
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if (this->GetStatus() == ProcessStatus_Running) {
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AMS_DMNT2_GDB_LOG_DEBUG("DebugProcess::Break\n");
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R_RETURN(svc::BreakDebugProcess(m_debug_handle));
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} else {
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AMS_DMNT2_GDB_LOG_ERROR("DebugProcess::Break called on non-running process!\n");
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R_SUCCEED();
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}
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}
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Result DebugProcess::Terminate() {
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if (this->IsValid()) {
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R_ABORT_UNLESS(svc::TerminateDebugProcess(m_debug_handle));
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this->Detach();
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}
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R_SUCCEED();
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}
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void DebugProcess::GetBranchTarget(svc::ThreadContext &ctx, u64 thread_id, u64 ¤t_pc, u64 &target) {
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/* Save pc, in case we modify it. */
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const u64 pc = current_pc;
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/* Clear the target. */
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target = 0;
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/* By default, we advance by four. */
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current_pc += 4;
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/* Get the instruction where we were. */
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u32 insn = 0;
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this->ReadMemory(std::addressof(insn), pc, sizeof(insn));
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/* Handle by architecture. */
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bool is_call = false;
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if (this->Is64Bit()) {
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if ((insn & 0x7C000000) == 0x14000000) {
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/* Unconditional branch (b/bl) */
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if (insn != 0x14000001) {
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is_call = (insn & 0x80000000) == 0x80000000;
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current_pc = 0;
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target = SignExtend(((insn & 0x03FFFFFF) << 2), 28) + pc;
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}
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} else if ((insn & 0x7E000000) == 0x34000000) {
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/* Compare/Branch (cbz/cbnz) */
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target = SignExtend(((insn & 0x00FFFFE0) >> 3), 21) + pc;
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} else if ((insn & 0x7E000000) == 0x36000000) {
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/* Test and branch (tbz/tbnz) */
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target = SignExtend(((insn & 0x0007FFE0) >> 3), 16) + pc;
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} else if ((insn & 0xFF000010) == 0x54000000) {
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/* Conditional branch (b.*) */
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if ((insn & 0xF) == 0xE) {
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/* Unconditional. */
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current_pc = 0;
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}
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target = SignExtend(((insn & 0x00FFFFE0) >> 3), 21) + pc;
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} else if ((insn & 0xFF8FFC1F) == 0xD60F0000) {
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/* Unconditional branch */
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is_call = (insn & 0x00F00000) == 0x00300000;
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if (!is_call) {
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current_pc = 0;
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}
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/* Get the register. */
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svc::ThreadContext new_ctx;
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if (R_SUCCEEDED(this->GetThreadContext(std::addressof(new_ctx), thread_id, svc::ThreadContextFlag_Control | svc::ThreadContextFlag_General))) {
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const int reg = (insn & 0x03E0) >> 5;
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if (reg < 29) {
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target = new_ctx.r[reg];
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} else if (reg == 29) {
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target = new_ctx.fp;
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} else if (reg == 30) {
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target = new_ctx.lr;
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} else if (reg == 31) {
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target = new_ctx.sp;
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}
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}
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}
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} else {
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/* TODO aarch32 branch decoding */
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AMS_UNUSED(ctx);
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}
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}
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Result DebugProcess::SetBreakPoint(uintptr_t address, size_t size, bool is_step) {
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R_RETURN(m_software_breakpoints.SetBreakPoint(address, size, is_step));
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}
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Result DebugProcess::ClearBreakPoint(uintptr_t address, size_t size) {
|
|
m_software_breakpoints.ClearBreakPoint(address, size);
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result DebugProcess::SetHardwareBreakPoint(uintptr_t address, size_t size, bool is_step) {
|
|
R_RETURN(m_hardware_breakpoints.SetBreakPoint(address, size, is_step));
|
|
}
|
|
|
|
Result DebugProcess::ClearHardwareBreakPoint(uintptr_t address, size_t size) {
|
|
m_hardware_breakpoints.ClearBreakPoint(address, size);
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result DebugProcess::SetWatchPoint(u64 address, u64 size, bool read, bool write) {
|
|
R_RETURN(m_hardware_watchpoints.SetWatchPoint(address, size, read, write));
|
|
}
|
|
|
|
Result DebugProcess::ClearWatchPoint(u64 address, u64 size) {
|
|
R_RETURN(m_hardware_watchpoints.ClearBreakPoint(address, size));
|
|
}
|
|
|
|
Result DebugProcess::GetWatchPointInfo(u64 address, bool &read, bool &write) {
|
|
R_RETURN(m_hardware_watchpoints.GetWatchPointInfo(address, read, write));
|
|
}
|
|
|
|
bool DebugProcess::IsValidWatchPoint(u64 address, u64 size) {
|
|
return HardwareWatchPointManager::IsValidWatchPoint(address, size);
|
|
}
|
|
|
|
Result DebugProcess::GetThreadCurrentCore(u32 *out, u64 thread_id) {
|
|
u64 dummy_value;
|
|
u32 val32 = 0;
|
|
|
|
R_TRY(svc::GetDebugThreadParam(std::addressof(dummy_value), std::addressof(val32), m_debug_handle, thread_id, svc::DebugThreadParam_CurrentCore));
|
|
|
|
*out = val32;
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result DebugProcess::GetProcessDebugEvent(svc::DebugEventInfo *out) {
|
|
/* Get the event. */
|
|
R_TRY(svc::GetDebugEvent(out, m_debug_handle));
|
|
|
|
/* Process the event. */
|
|
switch (out->type) {
|
|
case svc::DebugEvent_CreateProcess:
|
|
{
|
|
/* Set our create process info. */
|
|
m_create_process_info = out->info.create_process;
|
|
|
|
/* Cache our bools. */
|
|
m_is_64_bit = (m_create_process_info.flags & svc::CreateProcessFlag_Is64Bit);
|
|
m_is_64_bit_address_space = (m_create_process_info.flags & svc::CreateProcessFlag_AddressSpaceMask) == svc::CreateProcessFlag_AddressSpace64Bit;
|
|
}
|
|
break;
|
|
case svc::DebugEvent_CreateThread:
|
|
{
|
|
if (const s32 index = this->ThreadCreate(out->thread_id); index >= 0) {
|
|
const Result result = osdbg::InitializeThreadInfo(std::addressof(m_thread_infos[index]), m_debug_handle, std::addressof(m_create_process_info), std::addressof(out->info.create_thread));
|
|
|
|
if (R_FAILED(result)) {
|
|
AMS_DMNT2_GDB_LOG_WARN("DebugProcess::GetProcessDebugEvent: InitializeThreadInfo(%lx) failed: %08x\n", out->thread_id, result.GetValue());
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
case svc::DebugEvent_ExitThread:
|
|
{
|
|
this->ThreadExit(out->thread_id);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (out->flags & svc::DebugEventFlag_Stopped) {
|
|
this->SetDebugBreaked();
|
|
}
|
|
|
|
R_SUCCEED();
|
|
}
|
|
|
|
u64 DebugProcess::GetLastThreadId() {
|
|
/* Select our first valid thread id. */
|
|
if (m_last_thread_id == 0) {
|
|
for (size_t i = 0; i < ThreadCountMax; ++i) {
|
|
if (m_thread_valid[i]) {
|
|
SetLastThreadId(m_thread_ids[i]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return m_last_thread_id;
|
|
}
|
|
|
|
Result DebugProcess::GetThreadList(s32 *out_count, u64 *out_thread_ids, size_t max_count) {
|
|
s32 count = 0;
|
|
for (size_t i = 0; i < ThreadCountMax; ++i) {
|
|
if (m_thread_valid[i]) {
|
|
if (count < static_cast<s32>(max_count)) {
|
|
out_thread_ids[count++] = m_thread_ids[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
*out_count = count;
|
|
R_SUCCEED();
|
|
}
|
|
|
|
Result DebugProcess::GetThreadInfoList(s32 *out_count, osdbg::ThreadInfo **out_infos, size_t max_count) {
|
|
s32 count = 0;
|
|
for (size_t i = 0; i < ThreadCountMax; ++i) {
|
|
if (m_thread_valid[i]) {
|
|
if (count < static_cast<s32>(max_count)) {
|
|
out_infos[count++] = std::addressof(m_thread_infos[i]);
|
|
}
|
|
}
|
|
}
|
|
|
|
*out_count = count;
|
|
R_SUCCEED();
|
|
}
|
|
|
|
void DebugProcess::GetThreadName(char *dst, u64 thread_id) const {
|
|
for (size_t i = 0; i < ThreadCountMax; ++i) {
|
|
if (m_thread_valid[i] && m_thread_ids[i] == thread_id) {
|
|
if (R_FAILED(osdbg::GetThreadName(dst, std::addressof(m_thread_infos[i])))) {
|
|
if (m_thread_infos[i]._thread_type != 0) {
|
|
if (m_thread_infos[i]._thread_type_type == osdbg::ThreadTypeType_Libnx) {
|
|
util::TSNPrintf(dst, os::ThreadNameLengthMax, "libnx Thread_0x%010lx", reinterpret_cast<uintptr_t>(m_thread_infos[i]._thread_type));
|
|
} else {
|
|
util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_0x%010lx", reinterpret_cast<uintptr_t>(m_thread_infos[i]._thread_type));
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_ID=%lu", thread_id);
|
|
}
|
|
|
|
} |