Atmosphere/stratosphere/fatal/source/fatal_service.cpp
2019-12-07 12:41:28 -08:00

154 lines
6.3 KiB
C++

/*
* Copyright (c) 2018-2019 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "fatal_config.hpp"
#include "fatal_debug.hpp"
#include "fatal_service.hpp"
#include "fatal_service_for_self.hpp"
#include "fatal_event_manager.hpp"
#include "fatal_task.hpp"
namespace sts::fatal::srv {
namespace {
/* Service Context. */
class ServiceContext {
private:
ThrowContext context;
FatalEventManager event_manager;
bool has_thrown;
private:
Result TrySetHasThrown() {
if (this->has_thrown) {
return ResultFatalAlreadyThrown;
}
this->has_thrown = true;
return ResultSuccess;
}
public:
ServiceContext() {
this->context.ClearState();
R_ASSERT(eventCreate(&this->context.erpt_event, false));
R_ASSERT(eventCreate(&this->context.battery_event, false));
this->has_thrown = false;
}
Result GetEvent(Handle *out) {
return this->event_manager.GetEvent(out);
}
Result ThrowFatal(u32 error_code, os::ProcessId process_id) {
return this->ThrowFatalWithCpuContext(error_code, process_id, FatalType_ErrorReportAndErrorScreen, {});
}
Result ThrowFatalWithPolicy(u32 error_code, os::ProcessId process_id, FatalType policy) {
return this->ThrowFatalWithCpuContext(error_code, process_id, policy, {});
}
Result ThrowFatalWithCpuContext(u32 error_code, os::ProcessId process_id, FatalType policy, const CpuContext &cpu_ctx);
};
/* Context global. */
ServiceContext g_context;
/* Throw implementation. */
Result ServiceContext::ThrowFatalWithCpuContext(u32 error_code, os::ProcessId process_id, FatalType policy, const CpuContext &cpu_ctx) {
/* We don't support Error Report only fatals. */
if (policy == FatalType_ErrorReport) {
return ResultSuccess;
}
/* Note that we've thrown fatal. */
R_TRY(this->TrySetHasThrown());
/* At this point we have exclusive access to this->context. */
this->context.error_code = error_code;
this->context.cpu_ctx = cpu_ctx;
/* Cap the stack trace to a sane limit. */
if (cpu_ctx.architecture == CpuContext::Architecture_Aarch64) {
this->context.cpu_ctx.aarch64_ctx.stack_trace_size = std::max(size_t(this->context.cpu_ctx.aarch64_ctx.stack_trace_size), aarch64::CpuContext::MaxStackTraceDepth);
} else {
this->context.cpu_ctx.aarch32_ctx.stack_trace_size = std::max(size_t(this->context.cpu_ctx.aarch32_ctx.stack_trace_size), aarch32::CpuContext::MaxStackTraceDepth);
}
/* Get title id. */
pm::info::GetTitleId(&this->context.title_id, process_id);
this->context.is_creport = (this->context.title_id == ncm::TitleId::Creport);
if (!this->context.is_creport) {
/* On firmware version 2.0.0, use debugging SVCs to collect information. */
if (hos::GetVersion() >= hos::Version_200) {
fatal::srv::TryCollectDebugInformation(&this->context, process_id);
}
} else {
/* We received info from creport. Parse title id from afsr0. */
if (cpu_ctx.architecture == CpuContext::Architecture_Aarch64) {
this->context.title_id = cpu_ctx.aarch64_ctx.GetTitleIdForAtmosphere();
} else {
this->context.title_id = cpu_ctx.aarch32_ctx.GetTitleIdForAtmosphere();
}
}
/* Decide whether to generate a report. */
this->context.generate_error_report = (policy == FatalType_ErrorReportAndErrorScreen);
/* Adjust error code (2000-0000 -> 2162-0002). */
if (this->context.error_code == ResultSuccess) {
this->context.error_code = ResultErrSystemModuleAborted;
}
switch (policy) {
case FatalType_ErrorReportAndErrorScreen:
case FatalType_ErrorScreen:
/* Signal that we're throwing. */
this->event_manager.SignalEvents();
if (GetFatalConfig().ShouldTransitionToFatal()) {
RunTasks(&this->context);
}
break;
/* N aborts here. Should we just return an error code? */
STS_UNREACHABLE_DEFAULT_CASE();
}
return ResultSuccess;
}
}
Result ThrowFatalForSelf(Result error_code) {
return g_context.ThrowFatalWithPolicy(static_cast<u32>(error_code), os::GetCurrentProcessId(), FatalType_ErrorScreen);
}
Result UserService::ThrowFatal(u32 error, const sf::ClientProcessId &client_pid) {
return g_context.ThrowFatal(error, client_pid.GetValue());
}
Result UserService::ThrowFatalWithPolicy(u32 error, const sf::ClientProcessId &client_pid, FatalType policy) {
return g_context.ThrowFatalWithPolicy(error, client_pid.GetValue(), policy);
}
Result UserService::ThrowFatalWithCpuContext(u32 error, const sf::ClientProcessId &client_pid, FatalType policy, const CpuContext &cpu_ctx) {
return g_context.ThrowFatalWithCpuContext(error, client_pid.GetValue(), policy, cpu_ctx);
}
Result PrivateService::GetFatalEvent(sf::OutCopyHandle out_h) {
return g_context.GetEvent(out_h.GetHandlePointer());
}
}