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kern: invert meaning of KTargetSystem/KSystemControl bools

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Michael Scire 2025-04-30 18:23:16 -07:00 • committed by SciresM
parent d147f6f93b
commit 66fcf33a2c
4 changed files with 41 additions and 41 deletions
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2
libraries/libmesosphere/include/mesosphere/kern_k_system_control_base.hpp
View file

@ -41,7 +41,7 @@ namespace ams::kern {
/* Nintendo uses std::mt19937_t for randomness. */
/* To save space (and because mt19337_t isn't secure anyway), */
/* We will use TinyMT. */
static constinit inline bool s_initialized_random_generator;
static constinit inline bool s_uninitialized_random_generator{true};
static constinit inline util::TinyMT s_random_generator{util::ConstantInitialize};
static constinit inline KSpinLock s_random_lock;
public:

46
libraries/libmesosphere/include/mesosphere/kern_k_target_system.hpp
View file

@ -25,35 +25,35 @@ namespace ams::kern {
friend class KSystemControl;
private:
struct KTargetSystemData {
bool is_debug_mode;
bool enable_debug_logging;
bool enable_user_exception_handlers;
bool enable_debug_memory_fill;
bool enable_user_pmu_access;
bool enable_kernel_debugging;
bool enable_dynamic_resource_limits;
bool is_not_debug_mode;
bool disable_debug_logging;
bool disable_user_exception_handlers;
bool disable_debug_memory_fill;
bool disable_user_pmu_access;
bool disable_kernel_debugging;
bool disable_dynamic_resource_limits;
};
private:
static inline constinit bool s_is_initialized = false;
static inline constinit bool s_is_uninitialized = true;
static inline constinit const volatile KTargetSystemData s_data = {
.is_debug_mode = true,
.enable_debug_logging = true,
.enable_user_exception_handlers = true,
.enable_debug_memory_fill = true,
.enable_user_pmu_access = true,
.enable_kernel_debugging = true,
.enable_dynamic_resource_limits = false,
.is_not_debug_mode = false,
.disable_debug_logging = false,
.disable_user_exception_handlers = false,
.disable_debug_memory_fill = false,
.disable_user_pmu_access = false,
.disable_kernel_debugging = false,
.disable_dynamic_resource_limits = true,
};
private:
static ALWAYS_INLINE void SetInitialized() { s_is_initialized = true; }
static ALWAYS_INLINE void SetInitialized() { s_is_uninitialized = false; }
public:
static ALWAYS_INLINE bool IsDebugMode() { return s_is_initialized && s_data.is_debug_mode; }
static ALWAYS_INLINE bool IsDebugLoggingEnabled() { return s_is_initialized && s_data.enable_debug_logging; }
static ALWAYS_INLINE bool IsUserExceptionHandlersEnabled() { return s_is_initialized && s_data.enable_user_exception_handlers; }
static ALWAYS_INLINE bool IsDebugMemoryFillEnabled() { return s_is_initialized && s_data.enable_debug_memory_fill; }
static ALWAYS_INLINE bool IsUserPmuAccessEnabled() { return s_is_initialized && s_data.enable_user_pmu_access; }
static ALWAYS_INLINE bool IsKernelDebuggingEnabled() { return s_is_initialized && s_data.enable_kernel_debugging; }
static ALWAYS_INLINE bool IsDynamicResourceLimitsEnabled() { return s_is_initialized && s_data.enable_dynamic_resource_limits; }
static ALWAYS_INLINE bool IsDebugMode() { return !(s_is_uninitialized | s_data.is_not_debug_mode); }
static ALWAYS_INLINE bool IsDebugLoggingEnabled() { return !(s_is_uninitialized | s_data.disable_debug_logging); }
static ALWAYS_INLINE bool IsUserExceptionHandlersEnabled() { return !(s_is_uninitialized | s_data.disable_user_exception_handlers); }
static ALWAYS_INLINE bool IsDebugMemoryFillEnabled() { return !(s_is_uninitialized | s_data.disable_debug_memory_fill); }
static ALWAYS_INLINE bool IsUserPmuAccessEnabled() { return !(s_is_uninitialized | s_data.disable_user_pmu_access); }
static ALWAYS_INLINE bool IsKernelDebuggingEnabled() { return !(s_is_uninitialized | s_data.disable_kernel_debugging); }
static ALWAYS_INLINE bool IsDynamicResourceLimitsEnabled() { return !(s_is_uninitialized | s_data.disable_dynamic_resource_limits); }
};
}

22
libraries/libmesosphere/source/board/nintendo/nx/kern_k_system_control.cpp
View file

@ -405,22 +405,22 @@ namespace ams::kern::board::nintendo::nx {
/* Configure KTargetSystem. */
volatile auto *ts = const_cast<volatile KTargetSystem::KTargetSystemData *>(std::addressof(KTargetSystem::s_data));
{
/* Set IsDebugMode. */
/* Set whether we're in debug mode. */
{
ts->is_debug_mode = GetConfigBool(smc::ConfigItem::IsDebugMode);
ts->is_not_debug_mode = !GetConfigBool(smc::ConfigItem::IsDebugMode);
/* If debug mode, we want to initialize uart logging. */
ts->enable_debug_logging = ts->is_debug_mode;
/* If we're not in debug mode, we don't want to initialize uart logging. */
ts->disable_debug_logging = ts->is_not_debug_mode;
}
/* Set Kernel Configuration. */
{
const auto kernel_config = util::BitPack32{GetConfigU32(smc::ConfigItem::KernelConfiguration)};
ts->enable_debug_memory_fill = kernel_config.Get<smc::KernelConfiguration::DebugFillMemory>();
ts->enable_user_exception_handlers = kernel_config.Get<smc::KernelConfiguration::EnableUserExceptionHandlers>();
ts->enable_dynamic_resource_limits = !kernel_config.Get<smc::KernelConfiguration::DisableDynamicResourceLimits>();
ts->enable_user_pmu_access = kernel_config.Get<smc::KernelConfiguration::EnableUserPmuAccess>();
ts->disable_debug_memory_fill = !kernel_config.Get<smc::KernelConfiguration::DebugFillMemory>();
ts->disable_user_exception_handlers = !kernel_config.Get<smc::KernelConfiguration::EnableUserExceptionHandlers>();
ts->disable_dynamic_resource_limits = kernel_config.Get<smc::KernelConfiguration::DisableDynamicResourceLimits>();
ts->disable_user_pmu_access = !kernel_config.Get<smc::KernelConfiguration::EnableUserPmuAccess>();
/* Configure call smc on panic. */
*const_cast<volatile bool *>(std::addressof(g_call_smc_on_panic)) = kernel_config.Get<smc::KernelConfiguration::UseSecureMonitorPanicCall>();
@ -430,7 +430,7 @@ namespace ams::kern::board::nintendo::nx {
{
/* NOTE: This is used to restrict access to SvcKernelDebug/SvcChangeKernelTraceState. */
/* Mesosphere may wish to not require this, as we'd ideally keep ProgramVerification enabled for userland. */
ts->enable_kernel_debugging = GetConfigBool(smc::ConfigItem::DisableProgramVerification);
ts->disable_kernel_debugging = !GetConfigBool(smc::ConfigItem::DisableProgramVerification);
}
}
}
@ -524,7 +524,7 @@ namespace ams::kern::board::nintendo::nx {
KScopedSpinLock lk(s_random_lock);
if (AMS_LIKELY(s_initialized_random_generator)) {
if (AMS_LIKELY(!s_uninitialized_random_generator)) {
return KSystemControlBase::GenerateUniformRange(min, max, []() ALWAYS_INLINE_LAMBDA -> u64 { return s_random_generator.GenerateRandomU64(); });
} else {
return KSystemControlBase::GenerateUniformRange(min, max, GenerateRandomU64FromSmc);
@ -535,7 +535,7 @@ namespace ams::kern::board::nintendo::nx {
KScopedInterruptDisable intr_disable;
KScopedSpinLock lk(s_random_lock);
if (AMS_LIKELY(s_initialized_random_generator)) {
if (AMS_LIKELY(!s_uninitialized_random_generator)) {
return s_random_generator.GenerateRandomU64();
} else {
return GenerateRandomU64FromSmc();

12
libraries/libmesosphere/source/kern_k_system_control_base.cpp
View file

@ -102,10 +102,10 @@ namespace ams::kern {
/* Randomness for Initialization. */
void KSystemControlBase::Init::GenerateRandom(u64 *dst, size_t count) {
if (AMS_UNLIKELY(!s_initialized_random_generator)) {
if (AMS_UNLIKELY(s_uninitialized_random_generator)) {
const u64 seed = KHardwareTimer::GetTick();
s_random_generator.Initialize(reinterpret_cast<const u32*>(std::addressof(seed)), sizeof(seed) / sizeof(u32));
s_initialized_random_generator = true;
s_uninitialized_random_generator = false;
}
for (size_t i = 0; i < count; ++i) {
@ -114,10 +114,10 @@ namespace ams::kern {
}
u64 KSystemControlBase::Init::GenerateRandomRange(u64 min, u64 max) {
if (AMS_UNLIKELY(!s_initialized_random_generator)) {
if (AMS_UNLIKELY(s_uninitialized_random_generator)) {
const u64 seed = KHardwareTimer::GetTick();
s_random_generator.Initialize(reinterpret_cast<const u32*>(std::addressof(seed)), sizeof(seed) / sizeof(u32));
s_initialized_random_generator = true;
s_uninitialized_random_generator = false;
}
return KSystemControlBase::GenerateUniformRange(min, max, []() ALWAYS_INLINE_LAMBDA -> u64 { return s_random_generator.GenerateRandomU64(); });
@ -140,9 +140,9 @@ namespace ams::kern {
void KSystemControlBase::InitializePhase1Base(u64 seed) {
/* Initialize the rng, if we somehow haven't already. */
if (AMS_UNLIKELY(!s_initialized_random_generator)) {
if (AMS_UNLIKELY(s_uninitialized_random_generator)) {
s_random_generator.Initialize(reinterpret_cast<const u32*>(std::addressof(seed)), sizeof(seed) / sizeof(u32));
s_initialized_random_generator = true;
s_uninitialized_random_generator = false;
}
/* Initialize debug logging. */