mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-18 09:56:40 +00:00
96f95b9f95
* result: try out some experimental shenanigans * result: sketch out some more shenanigans * result: see what it looks like to convert kernel to use result conds instead of guards * make rest of kernel use experimental new macro-ing
532 lines
24 KiB
C++
532 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 <mesosphere.hpp>
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namespace ams::kern::svc {
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/* ============================= Common ============================= */
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namespace {
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constexpr inline int32_t MaximumDebuggableThreadCount = 0x60;
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Result DebugActiveProcess(ams::svc::Handle *out_handle, uint64_t process_id) {
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/* Get the process from its id. */
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KProcess *process = KProcess::GetProcessFromId(process_id);
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R_UNLESS(process != nullptr, svc::ResultInvalidProcessId());
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/* Close the reference we opened to the process on scope exit. */
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ON_SCOPE_EXIT { process->Close(); };
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/* Check that the debugging is allowed. */
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if (!process->IsPermittedDebug()) {
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R_UNLESS(GetCurrentProcess().CanForceDebug(), svc::ResultInvalidState());
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}
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/* Disallow debugging one's own processs, to prevent softlocks. */
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R_UNLESS(process != GetCurrentProcessPointer(), svc::ResultInvalidState());
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/* Get the current handle table. */
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auto &handle_table = GetCurrentProcess().GetHandleTable();
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/* Create a new debug object. */
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KDebug *debug = KDebug::Create();
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R_UNLESS(debug != nullptr, svc::ResultOutOfResource());
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ON_SCOPE_EXIT { debug->Close(); };
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/* Initialize the debug object. */
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debug->Initialize();
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/* Register the debug object. */
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KDebug::Register(debug);
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/* Try to attach to the target process. */
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R_TRY(debug->Attach(process));
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/* Add the new debug object to the handle table. */
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R_TRY(handle_table.Add(out_handle, debug));
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R_SUCCEED();
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}
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Result BreakDebugProcess(ams::svc::Handle debug_handle) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Break the process. */
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R_TRY(debug->BreakProcess());
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R_SUCCEED();
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}
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Result TerminateDebugProcess(ams::svc::Handle debug_handle) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Terminate the process. */
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R_TRY(debug->TerminateProcess());
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R_SUCCEED();
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}
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template<typename EventInfoType>
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Result GetDebugEvent(KUserPointer<EventInfoType *> out_info, ams::svc::Handle debug_handle) {
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Create and clear a new event info. */
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EventInfoType info;
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std::memset(std::addressof(info), 0, sizeof(info));
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/* Get the next info from the debug object. */
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R_TRY(debug->GetDebugEventInfo(std::addressof(info)));
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/* Copy the info out to the user. */
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R_TRY(out_info.CopyFrom(std::addressof(info)));
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R_SUCCEED();
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}
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Result ContinueDebugEventImpl(ams::svc::Handle debug_handle, uint32_t flags, const uint64_t *thread_ids, int32_t num_thread_ids) {
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Continue the event. */
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R_TRY(debug->ContinueDebug(flags, thread_ids, num_thread_ids));
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R_SUCCEED();
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}
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Result ContinueDebugEvent(ams::svc::Handle debug_handle, uint32_t flags, KUserPointer<const uint64_t *> user_thread_ids, int32_t num_thread_ids) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Verify that the flags are valid. */
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R_UNLESS((flags | ams::svc::ContinueFlag_AllMask) == ams::svc::ContinueFlag_AllMask, svc::ResultInvalidEnumValue());
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/* Verify that continue all and continue others flags are exclusive. */
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constexpr u32 AllAndOthersMask = ams::svc::ContinueFlag_ContinueAll | ams::svc::ContinueFlag_ContinueOthers;
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R_UNLESS((flags & AllAndOthersMask) != AllAndOthersMask, svc::ResultInvalidEnumValue());
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/* Verify that the number of thread ids is valid. */
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R_UNLESS((0 <= num_thread_ids && num_thread_ids <= MaximumDebuggableThreadCount), svc::ResultOutOfRange());
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/* Copy the threads from userspace. */
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uint64_t thread_ids[MaximumDebuggableThreadCount];
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if (num_thread_ids > 0) {
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R_TRY(user_thread_ids.CopyArrayTo(thread_ids, num_thread_ids));
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}
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/* Continue the event. */
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R_TRY(ContinueDebugEventImpl(debug_handle, flags, thread_ids, num_thread_ids));
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R_SUCCEED();
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}
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Result LegacyContinueDebugEvent(ams::svc::Handle debug_handle, uint32_t flags, uint64_t thread_id) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Verify that the flags are valid. */
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R_UNLESS((flags | ams::svc::ContinueFlag_AllMask) == ams::svc::ContinueFlag_AllMask, svc::ResultInvalidEnumValue());
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/* Verify that continue all and continue others flags are exclusive. */
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constexpr u32 AllAndOthersMask = ams::svc::ContinueFlag_ContinueAll | ams::svc::ContinueFlag_ContinueOthers;
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R_UNLESS((flags & AllAndOthersMask) != AllAndOthersMask, svc::ResultInvalidEnumValue());
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/* Continue the event. */
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R_TRY(ContinueDebugEventImpl(debug_handle, flags, std::addressof(thread_id), 1));
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R_SUCCEED();
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}
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Result GetDebugThreadContext(KUserPointer<ams::svc::ThreadContext *> out_context, ams::svc::Handle debug_handle, uint64_t thread_id, uint32_t context_flags) {
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/* Validate the context flags. */
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R_UNLESS((context_flags | ams::svc::ThreadContextFlag_All) == ams::svc::ThreadContextFlag_All, svc::ResultInvalidEnumValue());
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the thread context. */
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ams::svc::ThreadContext context = {};
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R_TRY(debug->GetThreadContext(std::addressof(context), thread_id, context_flags));
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/* Copy the context to userspace. */
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R_TRY(out_context.CopyFrom(std::addressof(context)));
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R_SUCCEED();
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}
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Result SetDebugThreadContext(ams::svc::Handle debug_handle, uint64_t thread_id, KUserPointer<const ams::svc::ThreadContext *> user_context, uint32_t context_flags) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Validate the context flags. */
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#if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
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{
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/* Check that the flags are a subset of the allowable. */
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constexpr u32 AllFlagsMask = ams::svc::ThreadContextFlag_All | ams::svc::ThreadContextFlag_SetSingleStep | ams::svc::ThreadContextFlag_ClearSingleStep;
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R_UNLESS((context_flags | AllFlagsMask) == AllFlagsMask, svc::ResultInvalidEnumValue());
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/* Check that thread isn't both setting and clearing single step. */
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const bool set_ss = (context_flags & ams::svc::ThreadContextFlag_SetSingleStep) != 0;
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const bool clear_ss = (context_flags & ams::svc::ThreadContextFlag_ClearSingleStep) != 0;
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R_UNLESS(!(set_ss && clear_ss), svc::ResultInvalidEnumValue());
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}
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#else
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{
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/* Check that the flags are a subset of the allowable. */
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R_UNLESS((context_flags | ams::svc::ThreadContextFlag_All) == ams::svc::ThreadContextFlag_All, svc::ResultInvalidEnumValue());
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}
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#endif
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/* Copy the thread context from userspace. */
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ams::svc::ThreadContext context;
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R_TRY(user_context.CopyTo(std::addressof(context)));
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Set the thread context. */
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R_TRY(debug->SetThreadContext(context, thread_id, context_flags));
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R_SUCCEED();
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}
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Result QueryDebugProcessMemory(ams::svc::MemoryInfo *out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle debug_handle, uintptr_t address) {
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Query the mapping's info. */
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R_TRY(debug->QueryMemoryInfo(out_memory_info, out_page_info, address));
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R_SUCCEED();
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}
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template<typename T>
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Result QueryDebugProcessMemory(KUserPointer<T *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle debug_handle, uint64_t address) {
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/* Get an ams::svc::MemoryInfo for the region. */
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ams::svc::MemoryInfo info = {};
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R_TRY(QueryDebugProcessMemory(std::addressof(info), out_page_info, debug_handle, address));
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/* Copy the info to userspace. */
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if constexpr (std::same_as<T, ams::svc::MemoryInfo>) {
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R_TRY(out_memory_info.CopyFrom(std::addressof(info)));
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} else {
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/* Convert the info. */
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T converted_info = {};
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static_assert(std::same_as<decltype(T{}.base_address), decltype(ams::svc::MemoryInfo{}.base_address)>);
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static_assert(std::same_as<decltype(T{}.size), decltype(ams::svc::MemoryInfo{}.size)>);
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converted_info.base_address = info.base_address;
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converted_info.size = info.size;
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converted_info.state = info.state;
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converted_info.attribute = info.attribute;
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converted_info.permission = info.permission;
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converted_info.ipc_count = info.ipc_count;
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converted_info.device_count = info.device_count;
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/* Copy it. */
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R_TRY(out_memory_info.CopyFrom(std::addressof(converted_info)));
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}
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R_SUCCEED();
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}
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Result ReadDebugProcessMemory(uintptr_t buffer, ams::svc::Handle debug_handle, uintptr_t address, size_t size) {
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/* Validate address / size. */
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R_UNLESS(size > 0, svc::ResultInvalidSize());
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R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
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R_UNLESS((buffer < buffer + size), svc::ResultInvalidCurrentMemory());
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Read the memory. */
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R_TRY(debug->ReadMemory(buffer, address, size));
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R_SUCCEED();
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}
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Result WriteDebugProcessMemory(ams::svc::Handle debug_handle, uintptr_t buffer, uintptr_t address, size_t size) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Validate address / size. */
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R_UNLESS(size > 0, svc::ResultInvalidSize());
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R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
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R_UNLESS((buffer < buffer + size), svc::ResultInvalidCurrentMemory());
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Write the memory. */
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R_TRY(debug->WriteMemory(buffer, address, size));
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R_SUCCEED();
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}
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Result SetHardwareBreakPoint(ams::svc::HardwareBreakPointRegisterName name, uint64_t flags, uint64_t value) {
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/* Only allow invoking the svc on development hardware. */
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R_UNLESS(KTargetSystem::IsDebugMode(), svc::ResultNotImplemented());
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/* Set the breakpoint. */
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R_TRY(KDebug::SetHardwareBreakPoint(name, flags, value));
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R_SUCCEED();
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}
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Result GetDebugThreadParam(uint64_t *out_64, uint32_t *out_32, ams::svc::Handle debug_handle, uint64_t thread_id, ams::svc::DebugThreadParam param) {
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/* Get the debug object. */
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KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(debug_handle);
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R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
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/* Get the thread from its id. */
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KThread *thread = KThread::GetThreadFromId(thread_id);
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R_UNLESS(thread != nullptr, svc::ResultInvalidThreadId());
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ON_SCOPE_EXIT { thread->Close(); };
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/* Get the process from the debug object. */
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R_UNLESS(debug->IsAttached(), svc::ResultProcessTerminated());
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R_UNLESS(debug->OpenProcess(), svc::ResultProcessTerminated());
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/* Close the process when we're done. */
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ON_SCOPE_EXIT { debug->CloseProcess(); };
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/* Get the proces. */
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KProcess * const process = debug->GetProcessUnsafe();
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/* Verify that the process is the thread's parent. */
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R_UNLESS(process == thread->GetOwnerProcess(), svc::ResultInvalidThreadId());
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/* Get the parameter. */
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switch (param) {
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case ams::svc::DebugThreadParam_Priority:
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{
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/* Get the priority. */
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*out_32 = thread->GetPriority();
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}
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break;
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case ams::svc::DebugThreadParam_State:
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{
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/* Get the thread state and suspend status. */
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KThread::ThreadState state;
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bool suspended_user;
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bool suspended_debug;
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{
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KScopedSchedulerLock sl;
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state = thread->GetState();
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suspended_user = thread->IsSuspendRequested(KThread::SuspendType_Thread);
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suspended_debug = thread->IsSuspendRequested(KThread::SuspendType_Debug);
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}
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/* Set the suspend flags. */
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*out_32 = 0;
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if (suspended_user) {
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*out_32 |= ams::svc::ThreadSuspend_User;
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}
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if (suspended_debug) {
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*out_32 |= ams::svc::ThreadSuspend_Debug;
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}
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/* Set the state. */
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switch (state) {
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case KThread::ThreadState_Initialized:
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{
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*out_64 = ams::svc::ThreadState_Initializing;
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}
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break;
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case KThread::ThreadState_Waiting:
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{
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*out_64 = ams::svc::ThreadState_Waiting;
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}
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break;
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case KThread::ThreadState_Runnable:
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{
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*out_64 = ams::svc::ThreadState_Running;
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}
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break;
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case KThread::ThreadState_Terminated:
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{
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*out_64 = ams::svc::ThreadState_Terminated;
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}
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break;
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default:
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R_THROW(svc::ResultInvalidState());
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}
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}
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break;
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case ams::svc::DebugThreadParam_IdealCore:
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{
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/* Get the ideal core. */
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s32 core_id;
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u64 affinity_mask;
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thread->GetPhysicalCoreMask(std::addressof(core_id), std::addressof(affinity_mask));
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*out_32 = core_id;
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}
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break;
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case ams::svc::DebugThreadParam_CurrentCore:
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{
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/* Get the current core. */
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*out_32 = thread->GetActiveCore();
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}
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break;
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case ams::svc::DebugThreadParam_AffinityMask:
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{
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/* Get the affinity mask. */
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s32 core_id;
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u64 affinity_mask;
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thread->GetPhysicalCoreMask(std::addressof(core_id), std::addressof(affinity_mask));
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*out_32 = affinity_mask;
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}
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break;
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default:
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R_THROW(ams::svc::ResultInvalidEnumValue());
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}
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R_SUCCEED();
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}
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}
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/* ============================= 64 ABI ============================= */
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Result DebugActiveProcess64(ams::svc::Handle *out_handle, uint64_t process_id) {
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R_RETURN(DebugActiveProcess(out_handle, process_id));
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}
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Result BreakDebugProcess64(ams::svc::Handle debug_handle) {
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R_RETURN(BreakDebugProcess(debug_handle));
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}
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Result TerminateDebugProcess64(ams::svc::Handle debug_handle) {
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R_RETURN(TerminateDebugProcess(debug_handle));
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}
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Result GetDebugEvent64(KUserPointer<ams::svc::lp64::DebugEventInfo *> out_info, ams::svc::Handle debug_handle) {
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R_RETURN(GetDebugEvent(out_info, debug_handle));
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}
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Result ContinueDebugEvent64(ams::svc::Handle debug_handle, uint32_t flags, KUserPointer<const uint64_t *> thread_ids, int32_t num_thread_ids) {
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R_RETURN(ContinueDebugEvent(debug_handle, flags, thread_ids, num_thread_ids));
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}
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Result LegacyContinueDebugEvent64(ams::svc::Handle debug_handle, uint32_t flags, uint64_t thread_id) {
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R_RETURN(LegacyContinueDebugEvent(debug_handle, flags, thread_id));
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}
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Result GetDebugThreadContext64(KUserPointer<ams::svc::ThreadContext *> out_context, ams::svc::Handle debug_handle, uint64_t thread_id, uint32_t context_flags) {
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R_RETURN(GetDebugThreadContext(out_context, debug_handle, thread_id, context_flags));
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}
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Result SetDebugThreadContext64(ams::svc::Handle debug_handle, uint64_t thread_id, KUserPointer<const ams::svc::ThreadContext *> context, uint32_t context_flags) {
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R_RETURN(SetDebugThreadContext(debug_handle, thread_id, context, context_flags));
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}
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Result QueryDebugProcessMemory64(KUserPointer<ams::svc::lp64::MemoryInfo *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle debug_handle, ams::svc::Address address) {
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R_RETURN(QueryDebugProcessMemory(out_memory_info, out_page_info, debug_handle, address));
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}
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Result ReadDebugProcessMemory64(ams::svc::Address buffer, ams::svc::Handle debug_handle, ams::svc::Address address, ams::svc::Size size) {
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R_RETURN(ReadDebugProcessMemory(buffer, debug_handle, address, size));
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}
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Result WriteDebugProcessMemory64(ams::svc::Handle debug_handle, ams::svc::Address buffer, ams::svc::Address address, ams::svc::Size size) {
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R_RETURN(WriteDebugProcessMemory(debug_handle, buffer, address, size));
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}
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Result SetHardwareBreakPoint64(ams::svc::HardwareBreakPointRegisterName name, uint64_t flags, uint64_t value) {
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R_RETURN(SetHardwareBreakPoint(name, flags, value));
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}
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Result GetDebugThreadParam64(uint64_t *out_64, uint32_t *out_32, ams::svc::Handle debug_handle, uint64_t thread_id, ams::svc::DebugThreadParam param) {
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R_RETURN(GetDebugThreadParam(out_64, out_32, debug_handle, thread_id, param));
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}
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/* ============================= 64From32 ABI ============================= */
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Result DebugActiveProcess64From32(ams::svc::Handle *out_handle, uint64_t process_id) {
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R_RETURN(DebugActiveProcess(out_handle, process_id));
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}
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Result BreakDebugProcess64From32(ams::svc::Handle debug_handle) {
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R_RETURN(BreakDebugProcess(debug_handle));
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}
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Result TerminateDebugProcess64From32(ams::svc::Handle debug_handle) {
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R_RETURN(TerminateDebugProcess(debug_handle));
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}
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Result GetDebugEvent64From32(KUserPointer<ams::svc::ilp32::DebugEventInfo *> out_info, ams::svc::Handle debug_handle) {
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R_RETURN(GetDebugEvent(out_info, debug_handle));
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}
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Result ContinueDebugEvent64From32(ams::svc::Handle debug_handle, uint32_t flags, KUserPointer<const uint64_t *> thread_ids, int32_t num_thread_ids) {
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R_RETURN(ContinueDebugEvent(debug_handle, flags, thread_ids, num_thread_ids));
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}
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Result LegacyContinueDebugEvent64From32(ams::svc::Handle debug_handle, uint32_t flags, uint64_t thread_id) {
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R_RETURN(LegacyContinueDebugEvent(debug_handle, flags, thread_id));
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|
}
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|
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Result GetDebugThreadContext64From32(KUserPointer<ams::svc::ThreadContext *> out_context, ams::svc::Handle debug_handle, uint64_t thread_id, uint32_t context_flags) {
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R_RETURN(GetDebugThreadContext(out_context, debug_handle, thread_id, context_flags));
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}
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Result SetDebugThreadContext64From32(ams::svc::Handle debug_handle, uint64_t thread_id, KUserPointer<const ams::svc::ThreadContext *> context, uint32_t context_flags) {
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R_RETURN(SetDebugThreadContext(debug_handle, thread_id, context, context_flags));
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|
}
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|
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Result QueryDebugProcessMemory64From32(KUserPointer<ams::svc::ilp32::MemoryInfo *> out_memory_info, ams::svc::PageInfo *out_page_info, ams::svc::Handle debug_handle, ams::svc::Address address) {
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|
R_RETURN(QueryDebugProcessMemory(out_memory_info, out_page_info, debug_handle, address));
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|
}
|
|
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Result ReadDebugProcessMemory64From32(ams::svc::Address buffer, ams::svc::Handle debug_handle, ams::svc::Address address, ams::svc::Size size) {
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|
R_RETURN(ReadDebugProcessMemory(buffer, debug_handle, address, size));
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|
}
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|
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Result WriteDebugProcessMemory64From32(ams::svc::Handle debug_handle, ams::svc::Address buffer, ams::svc::Address address, ams::svc::Size size) {
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|
R_RETURN(WriteDebugProcessMemory(debug_handle, buffer, address, size));
|
|
}
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|
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Result SetHardwareBreakPoint64From32(ams::svc::HardwareBreakPointRegisterName name, uint64_t flags, uint64_t value) {
|
|
R_RETURN(SetHardwareBreakPoint(name, flags, value));
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|
}
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|
|
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Result GetDebugThreadParam64From32(uint64_t *out_64, uint32_t *out_32, ams::svc::Handle debug_handle, uint64_t thread_id, ams::svc::DebugThreadParam param) {
|
|
R_RETURN(GetDebugThreadParam(out_64, out_32, debug_handle, thread_id, param));
|
|
}
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|
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|
}
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