Atmosphere/libraries/libmesosphere/source/svc/kern_svc_kernel_debug.cpp

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/*
* Copyright (c) 2018-2020 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 <mesosphere.hpp>
namespace ams::kern::svc {
/* ============================= Common ============================= */
namespace {
void KernelDebug(ams::svc::KernelDebugType kern_debug_type, uint64_t arg0, uint64_t arg1, uint64_t arg2) {
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MESOSPHERE_UNUSED(kern_debug_type, arg0, arg1, arg2);
#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
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{
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switch (kern_debug_type) {
case ams::svc::KernelDebugType_Thread:
if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpThread();
} else {
KDumpObject::DumpThread(arg0);
}
break;
case ams::svc::KernelDebugType_ThreadCallStack:
if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpThreadCallStack();
} else {
KDumpObject::DumpThreadCallStack(arg0);
}
break;
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case ams::svc::KernelDebugType_KernelObject:
KDumpObject::DumpKernelObject();
break;
case ams::svc::KernelDebugType_Handle:
if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpHandle();
} else {
KDumpObject::DumpHandle(arg0);
}
break;
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case ams::svc::KernelDebugType_Memory:
if (arg0 == static_cast<u64>(-2)) {
KDumpObject::DumpKernelMemory();
} else if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpMemory();
} else {
KDumpObject::DumpMemory(arg0);
}
break;
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case ams::svc::KernelDebugType_PageTable:
if (arg0 == static_cast<u64>(-2)) {
KDumpObject::DumpKernelPageTable();
} else if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpPageTable();
} else {
KDumpObject::DumpPageTable(arg0);
}
break;
case ams::svc::KernelDebugType_CpuUtilization:
{
const auto old_prio = GetCurrentThread().GetBasePriority();
GetCurrentThread().SetBasePriority(3);
if (arg0 == static_cast<u64>(-2)) {
KDumpObject::DumpKernelCpuUtilization();
} else if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpCpuUtilization();
} else {
KDumpObject::DumpCpuUtilization(arg0);
}
GetCurrentThread().SetBasePriority(old_prio);
}
break;
case ams::svc::KernelDebugType_Process:
if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpProcess();
} else {
KDumpObject::DumpProcess(arg0);
}
break;
case ams::svc::KernelDebugType_SuspendProcess:
if (KProcess *process = KProcess::GetProcessFromId(arg0); process != nullptr) {
ON_SCOPE_EXIT { process->Close(); };
if (R_SUCCEEDED(process->SetActivity(ams::svc::ProcessActivity_Paused))) {
MESOSPHERE_RELEASE_LOG("Suspend Process ID=%3lu\n", process->GetId());
}
}
break;
case ams::svc::KernelDebugType_ResumeProcess:
if (KProcess *process = KProcess::GetProcessFromId(arg0); process != nullptr) {
ON_SCOPE_EXIT { process->Close(); };
if (R_SUCCEEDED(process->SetActivity(ams::svc::ProcessActivity_Runnable))) {
MESOSPHERE_RELEASE_LOG("Resume Process ID=%3lu\n", process->GetId());
}
}
break;
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case ams::svc::KernelDebugType_Port:
if (arg0 == static_cast<u64>(-1)) {
KDumpObject::DumpPort();
} else {
KDumpObject::DumpPort(arg0);
}
break;
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default:
break;
}
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}
#endif
}
void ChangeKernelTraceState(ams::svc::KernelTraceState kern_trace_state) {
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#ifdef MESOSPHERE_BUILD_FOR_DEBUGGING
{
switch (kern_trace_state) {
case ams::svc::KernelTraceState_Enabled:
{
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MESOSPHERE_KTRACE_RESUME();
}
break;
case ams::svc::KernelTraceState_Disabled:
{
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MESOSPHERE_KTRACE_PAUSE();
}
break;
default:
break;
}
}
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#else
{
MESOSPHERE_UNUSED(kern_trace_state);
}
#endif
}
}
/* ============================= 64 ABI ============================= */
void KernelDebug64(ams::svc::KernelDebugType kern_debug_type, uint64_t arg0, uint64_t arg1, uint64_t arg2) {
return KernelDebug(kern_debug_type, arg0, arg1, arg2);
}
void ChangeKernelTraceState64(ams::svc::KernelTraceState kern_trace_state) {
return ChangeKernelTraceState(kern_trace_state);
}
/* ============================= 64From32 ABI ============================= */
void KernelDebug64From32(ams::svc::KernelDebugType kern_debug_type, uint64_t arg0, uint64_t arg1, uint64_t arg2) {
return KernelDebug(kern_debug_type, arg0, arg1, arg2);
}
void ChangeKernelTraceState64From32(ams::svc::KernelTraceState kern_trace_state) {
return ChangeKernelTraceState(kern_trace_state);
}
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}