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kern: add page table contents debug

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This commit is contained in:
Michael Scire 2020-12-11 19:30:48 -08:00
parent 1ec2c0c2cb
commit 9a6cca7499
6 changed files with 189 additions and 16 deletions
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1
libraries/libmesosphere/include/mesosphere/kern_k_dpc_manager.hpp
View file

@ -39,6 +39,7 @@ namespace ams::kern {
}
static NOINLINE void HandleDpc();
static void Sync();
};
}

8
libraries/libmesosphere/include/mesosphere/kern_k_dump_object.hpp
View file

@ -34,6 +34,14 @@ namespace ams::kern::KDumpObject {
void DumpMemory();
void DumpMemory(u64 process_id);
void DumpKernelPageTable();
void DumpPageTable();
void DumpPageTable(u64 process_id);
void DumpKernelCpuUtilization();
void DumpCpuUtilization();
void DumpCpuUtilization(u64 process_id);
void DumpProcess();
void DumpProcess(u64 process_id);

65
libraries/libmesosphere/source/arch/arm64/kern_k_page_table_impl.cpp
View file

@ -312,9 +312,6 @@ namespace ams::kern::arch::arm64 {
const uintptr_t end = start + size;
const uintptr_t last = end - 1;
MESOSPHERE_LOG("==== PAGE TABLE DUMP START (%012lx - %012lx) ====\n", start, last);
ON_SCOPE_EXIT { MESOSPHERE_LOG("==== PAGE TABLE DUMP END ====\n"); };
/* Define tracking variables. */
bool unmapped = false;
uintptr_t unmapped_start = 0;
@ -344,11 +341,27 @@ namespace ams::kern::arch::arm64 {
cur = util::AlignDown(cur, L1BlockSize);
if (unmapped) {
unmapped = false;
MESOSPHERE_LOG("%012lx - %012lx: ---\n", unmapped_start, cur - 1);
MESOSPHERE_RELEASE_LOG("%016lx - %016lx: not mapped\n", unmapped_start, cur - 1);
}
/* Print. */
MESOSPHERE_LOG("%012lx: %016lx\n", cur, *reinterpret_cast<const u64 *>(l1_entry));
MESOSPHERE_RELEASE_LOG("%016lx: %016lx PA=%p SZ=1G Mapped=%d UXN=%d PXN=%d Cont=%d nG=%d AF=%d SH=%x RO=%d UA=%d NS=%d AttrIndx=%d NoMerge=%d,%d,%d\n", cur,
*reinterpret_cast<const u64 *>(l1_entry),
reinterpret_cast<void *>(GetInteger(l1_entry->GetBlock())),
l1_entry->IsMapped(),
l1_entry->IsUserExecuteNever(),
l1_entry->IsPrivilegedExecuteNever(),
l1_entry->IsContiguous(),
!l1_entry->IsGlobal(),
static_cast<int>(l1_entry->GetAccessFlag()),
static_cast<unsigned int>(l1_entry->GetShareable()),
l1_entry->IsReadOnly(),
l1_entry->IsUserAccessible(),
l1_entry->IsNonSecure(),
static_cast<int>(l1_entry->GetPageAttribute()),
l1_entry->IsHeadMergeDisabled(),
l1_entry->IsHeadAndBodyMergeDisabled(),
l1_entry->IsTailMergeDisabled());
/* Advance. */
cur += L1BlockSize;
@ -373,11 +386,27 @@ namespace ams::kern::arch::arm64 {
cur = util::AlignDown(cur, L2BlockSize);
if (unmapped) {
unmapped = false;
MESOSPHERE_LOG("%012lx - %012lx: ---\n", unmapped_start, cur - 1);
MESOSPHERE_RELEASE_LOG("%016lx - %016lx: not mapped\n", unmapped_start, cur - 1);
}
/* Print. */
MESOSPHERE_LOG("%012lx: %016lx\n", cur, *reinterpret_cast<const u64 *>(l2_entry));
MESOSPHERE_RELEASE_LOG("%016lx: %016lx PA=%p SZ=2M Mapped=%d UXN=%d PXN=%d Cont=%d nG=%d AF=%d SH=%x RO=%d UA=%d NS=%d AttrIndx=%d NoMerge=%d,%d,%d\n", cur,
*reinterpret_cast<const u64 *>(l2_entry),
reinterpret_cast<void *>(GetInteger(l2_entry->GetBlock())),
l2_entry->IsMapped(),
l2_entry->IsUserExecuteNever(),
l2_entry->IsPrivilegedExecuteNever(),
l2_entry->IsContiguous(),
!l2_entry->IsGlobal(),
static_cast<int>(l2_entry->GetAccessFlag()),
static_cast<unsigned int>(l2_entry->GetShareable()),
l2_entry->IsReadOnly(),
l2_entry->IsUserAccessible(),
l2_entry->IsNonSecure(),
static_cast<int>(l2_entry->GetPageAttribute()),
l2_entry->IsHeadMergeDisabled(),
l2_entry->IsHeadAndBodyMergeDisabled(),
l2_entry->IsTailMergeDisabled());
/* Advance. */
cur += L2BlockSize;
@ -402,11 +431,27 @@ namespace ams::kern::arch::arm64 {
cur = util::AlignDown(cur, L3BlockSize);
if (unmapped) {
unmapped = false;
MESOSPHERE_LOG("%012lx - %012lx: ---\n", unmapped_start, cur - 1);
MESOSPHERE_RELEASE_LOG("%016lx - %016lx: not mapped\n", unmapped_start, cur - 1);
}
/* Print. */
MESOSPHERE_LOG("%012lx: %016lx\n", cur, *reinterpret_cast<const u64 *>(l3_entry));
MESOSPHERE_RELEASE_LOG("%016lx: %016lx PA=%p SZ=4K Mapped=%d UXN=%d PXN=%d Cont=%d nG=%d AF=%d SH=%x RO=%d UA=%d NS=%d AttrIndx=%d NoMerge=%d,%d,%d\n", cur,
*reinterpret_cast<const u64 *>(l3_entry),
reinterpret_cast<void *>(GetInteger(l3_entry->GetBlock())),
l3_entry->IsMapped(),
l3_entry->IsUserExecuteNever(),
l3_entry->IsPrivilegedExecuteNever(),
l3_entry->IsContiguous(),
!l3_entry->IsGlobal(),
static_cast<int>(l3_entry->GetAccessFlag()),
static_cast<unsigned int>(l3_entry->GetShareable()),
l3_entry->IsReadOnly(),
l3_entry->IsUserAccessible(),
l3_entry->IsNonSecure(),
static_cast<int>(l3_entry->GetPageAttribute()),
l3_entry->IsHeadMergeDisabled(),
l3_entry->IsHeadAndBodyMergeDisabled(),
l3_entry->IsTailMergeDisabled());
/* Advance. */
cur += L3BlockSize;
@ -427,7 +472,7 @@ namespace ams::kern::arch::arm64 {
/* Print the last unmapped range if necessary. */
if (unmapped) {
MESOSPHERE_LOG("%012lx - %012lx: ---\n", unmapped_start, last);
MESOSPHERE_RELEASE_LOG("%016lx - %016lx: not mapped\n", unmapped_start, last);
}
}

46
libraries/libmesosphere/source/kern_k_dpc_manager.cpp
View file

@ -21,10 +21,11 @@ namespace ams::kern {
class KDpcTask {
private:
static inline KLightLock s_lock;
static inline KLightConditionVariable s_cond_var;
static inline u64 s_core_mask;
static inline KDpcTask *s_task;
static constinit inline KLightLock s_req_lock;
static constinit inline KLightLock s_lock;
static constinit inline KLightConditionVariable s_cond_var;
static constinit inline u64 s_core_mask;
static constinit inline KDpcTask *s_task;
private:
static bool HasRequest(s32 core_id) {
return (s_core_mask & (1ull << core_id)) != 0;
@ -40,12 +41,35 @@ namespace ams::kern {
public:
virtual void DoTask() { /* ... */ }
static void Request(KDpcTask *task) {
KScopedLightLock rlk(s_req_lock);
/* Acquire the requested task. */
MESOSPHERE_ABORT_UNLESS(s_task == nullptr);
s_task = task;
{
KScopedLightLock lk(s_lock);
MESOSPHERE_ABORT_UNLESS(s_core_mask == 0);
for (auto core = 0; core < static_cast<s32>(cpu::NumCores); ++core) {
SetRequest(core);
}
s_cond_var.Broadcast();
while (s_core_mask != 0) {
s_cond_var.Wait(std::addressof(s_lock), -1ll);
}
}
s_task = nullptr;
}
static void WaitForRequest() {
/* Wait for a request to come in. */
const auto core_id = GetCurrentCoreId();
KScopedLightLock lk(s_lock);
while (!HasRequest(core_id)) {
s_cond_var.Wait(&s_lock, -1ll);
s_cond_var.Wait(std::addressof(s_lock), -1ll);
}
}
@ -54,7 +78,7 @@ namespace ams::kern {
const auto core_id = GetCurrentCoreId();
KScopedLightLock lk(s_lock);
while (!HasRequest(core_id)) {
s_cond_var.Wait(&s_lock, timeout);
s_cond_var.Wait(std::addressof(s_lock), timeout);
if (KHardwareTimer::GetTick() >= timeout) {
return false;
}
@ -147,6 +171,9 @@ namespace ams::kern {
}
void KDpcManager::HandleDpc() {
MESOSPHERE_ASSERT(!KInterruptManager::AreInterruptsEnabled());
MESOSPHERE_ASSERT(!KScheduler::IsSchedulerLockedByCurrentThread());
/* The only deferred procedure supported by Horizon is thread termination. */
/* Check if we need to terminate the current thread. */
KThread *cur_thread = GetCurrentThreadPointer();
@ -156,4 +183,11 @@ namespace ams::kern {
}
}
void KDpcManager::Sync() {
MESOSPHERE_ASSERT(!KScheduler::IsSchedulerLockedByCurrentThread());
KDpcTask dummy_task;
KDpcTask::Request(std::addressof(dummy_task));
}
}

60
libraries/libmesosphere/source/kern_k_dump_object.cpp
View file

@ -166,6 +166,12 @@ namespace ams::kern::KDumpObject {
MESOSPHERE_RELEASE_LOG("\n\n");
}
void DumpPageTable(KProcess *process) {
MESOSPHERE_RELEASE_LOG("Process ID=%3lu (%s)\n", process->GetId(), process->GetName());
process->GetPageTable().DumpPageTable();
MESOSPHERE_RELEASE_LOG("\n\n");
}
void DumpProcess(KProcess *process) {
MESOSPHERE_RELEASE_LOG("Process ID=%3lu index=%3zu State=%d (%s)\n", process->GetId(), process->GetSlabIndex(), process->GetState(), process->GetName());
}
@ -600,6 +606,60 @@ namespace ams::kern::KDumpObject {
MESOSPHERE_RELEASE_LOG("\n");
}
void DumpKernelPageTable() {
MESOSPHERE_RELEASE_LOG("Dump Kernel PageTable\n");
{
Kernel::GetKernelPageTable().DumpPageTable();
}
MESOSPHERE_RELEASE_LOG("\n");
}
void DumpPageTable() {
MESOSPHERE_RELEASE_LOG("Dump Process\n");
{
/* Lock the list. */
KProcess::ListAccessor accessor;
const auto end = accessor.end();
/* Dump each process. */
for (auto it = accessor.begin(); it != end; ++it) {
DumpPageTable(static_cast<KProcess *>(std::addressof(*it)));
}
}
MESOSPHERE_RELEASE_LOG("\n");
}
void DumpPageTable(u64 process_id) {
MESOSPHERE_RELEASE_LOG("Dump PageTable\n");
{
/* Find and dump the target process. */
if (KProcess *process = KProcess::GetProcessFromId(process_id); process != nullptr) {
ON_SCOPE_EXIT { process->Close(); };
DumpPageTable(process);
}
}
MESOSPHERE_RELEASE_LOG("\n");
}
void DumpKernelCpuUtilization() {
/* TODO */
}
void DumpCpuUtilization() {
/* TODO */
}
void DumpCpuUtilization(u64 process_id) {
/* TODO */
MESOSPHERE_UNUSED(process_id);
}
void DumpProcess(u64 process_id) {
MESOSPHERE_RELEASE_LOG("Dump Process\n");

25
libraries/libmesosphere/source/svc/kern_svc_kernel_debug.cpp
View file

@ -60,6 +60,31 @@ namespace ams::kern::svc {
KDumpObject::DumpMemory(arg0);
}
break;
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();