dmnt2: fix gdb register output

This also fixes ctrl-c break in gdbstub, and fixes crash on unknown monitor cmd.

.gitignore

@@ -91,7 +91,11 @@ dkms.conf
 **/out
 **/build
 **/build_nintendo_nx_arm64
+**/build_nintendo_nx_arm64_armv8a
 **/build_nintendo_nx_arm
+**/build_nintendo_nx_arm_armv8a
+**/build_nintendo_nx_arm_armv7a
+**/build_nintendo_nx_arm_armv4t
 **/build_nintendo_nx_x64
 **/build_nintendo_nx_x86
 

Makefile

@@ -112,6 +112,7 @@ dist-no-debug: all
 	mkdir -p atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/0100000000000042
 	mkdir -p atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/0100000000000420
 	mkdir -p atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000B240
+	mkdir -p atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000D609
 	mkdir -p atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000D623
 	cp stratosphere/boot2/boot2.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/0100000000000008/exefs.nsp
 	cp stratosphere/dmnt/dmnt.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000000D/exefs.nsp
@@ -125,6 +126,7 @@ dist-no-debug: all
 	cp stratosphere/pgl/pgl.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/0100000000000042/exefs.nsp
 	cp stratosphere/LogManager/LogManager.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/0100000000000420/exefs.nsp
 	cp stratosphere/htc/htc.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000B240/exefs.nsp
+	cp stratosphere/dmnt.gen2/dmnt.gen2.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000D609/exefs.nsp
 	cp stratosphere/TioServer/TioServer.nsp atmosphere-$(AMSVER)/stratosphere_romfs/atmosphere/contents/010000000000D623/exefs.nsp
 	@build_romfs atmosphere-$(AMSVER)/stratosphere_romfs atmosphere-$(AMSVER)/atmosphere/stratosphere.romfs
 	rm -r atmosphere-$(AMSVER)/stratosphere_romfs

docs/changelog.md

@@ -1,4 +1,20 @@
 # Changelog
+## 1.2.2
++ A number of fixes were made to Atmosphère's implementation of the new "sprofile" service added in 13.0.0.
+  + Nintendo is finally transmitting data over the internet to certain consoles, which has allowed for validating our service implementation.
+    + Unfortunately, there were several problems, and if your console began trying to use the new services atmosphere would show a fatal error with code 0xCAF6 (sprofile::ResultInvalidState()).
+  + With actual test data in hand, a test program was written and it was verified that our implementation can successfully import/access profile data now.
+    + Hopefully there are no more issues, and I sincerely apologize for anyone who got an 0xCAF6 fatal due to this.
++ A number of minor improvements were made to `mesosphère`, including:
+  + KThread::GetContextForSchedulerLoop was implemented in assembly (using static assertions to verify offset-of-context-in-struct is correct).
+    + This saves an unnecessary function call in the middle of the scheduler hot loop, replacing it with an addition instruction, which should improve microperformance.
+  + Mesosphere's hardware maintenance instructions were audited via a script and now directly match Nintendo's kernels.
+    + Notably, this inserts a missing instruction synchronization barrier when validating that slab heaps may be constructed.
+    + This missing ISB could cause an abort on certain (see: particularly sensitive) hardware on boot if the relevant codepath was speculatively executed (it normally only executes on game launch...)
+  + The SVC handlers for performing light IPC (normally unused) from 32-bit process were fixed in Mesosphere.
+  + A bug was fixed that would cause the register x27 to be overwritten with the contents of x26 when returning from a user exception handler.
+  + A bug was fixed that would cause the kernel to use the userland stack pointer instead of the kernel stack pointer while generating an error report for a kernel abort.
++ General system stability improvements to enhance the user's experience.
 ## 1.2.1
 + Support was implemented for 13.1.0.
   + `mesosphère` was updated to reflect the kernel behavioral changes made in 13.1.0.

libraries/.gitrepo

@@ -6,7 +6,7 @@
 [subrepo]
 	remote = https://github.com/Atmosphere-NX/Atmosphere-libs
 	branch = master
-	commit = 13c6987cc43d0b9a874e87e3ce8eaffd1c72fa69
-	parent = cb38b0b929f332a52ceeee5c27cb0fd83ff03433
+	commit = ceff2f3712d66904747f77619cd6dc12a5dcea8b
+	parent = 6cf5205a28cfeb30930fd1cfd3c8369cd13edfa3
 	method = merge
 	cmdver = 0.4.1

libraries/config/arch/armv4t/arch.mk

@@ -0,0 +1,11 @@
+ifeq ($(strip $(DEVKITPRO)),)
+$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
+endif
+
+include $(DEVKITPRO)/devkitARM/base_rules
+
+export ATMOSPHERE_DEFINES  += -DATMOSPHERE_ARCH_ARM_V4T
+export ATMOSPHERE_SETTINGS +=
+export ATMOSPHERE_CFLAGS   +=
+export ATMOSPHERE_CXXFLAGS +=
+export ATMOSPHERE_ASFLAGS  +=

libraries/config/arch/armv8a/arch.mk

@@ -0,0 +1,11 @@
+ifeq ($(strip $(DEVKITPRO)),)
+$(error "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to>/devkitpro")
+endif
+
+include $(DEVKITPRO)/devkitA64/base_rules
+
+export ATMOSPHERE_DEFINES  += -DATMOSPHERE_ARCH_ARM_V8A
+export ATMOSPHERE_SETTINGS +=
+export ATMOSPHERE_CFLAGS   +=
+export ATMOSPHERE_CXXFLAGS +=
+export ATMOSPHERE_ASFLAGS  +=

libraries/config/common.mk

@@ -39,6 +39,9 @@ export ATMOSPHERE_ARCH_NAME  := arm64
 export ATMOSPHERE_BOARD_NAME := nintendo_nx
 export ATMOSPHERE_OS_NAME    := horizon
 
+export ATMOSPHERE_SUB_ARCH_DIR  = armv8a
+export ATMOSPHERE_SUB_ARCH_NAME = armv8a
+
 export ATMOSPHERE_CPU_EXTENSIONS := arm_crypto_extension aarch64_crypto_extension
 else ifeq ($(ATMOSPHERE_CPU),arm7tdmi)
 export ATMOSPHERE_ARCH_DIR   := arm
@@ -49,6 +52,9 @@ export ATMOSPHERE_ARCH_NAME  := arm
 export ATMOSPHERE_BOARD_NAME := nintendo_nx
 export ATMOSPHERE_OS_NAME    := horizon
 
+export ATMOSPHERE_SUB_ARCH_DIR  = armv4t
+export ATMOSPHERE_SUB_ARCH_NAME = armv4t
+
 export ATMOSPHERE_CPU_EXTENSIONS :=
 endif
 
@@ -64,6 +70,9 @@ export ATMOSPHERE_ARCH_NAME  := arm64
 export ATMOSPHERE_BOARD_NAME := qemu_virt
 export ATMOSPHERE_OS_NAME    := horizon
 
+export ATMOSPHERE_SUB_ARCH_DIR  = armv8a
+export ATMOSPHERE_SUB_ARCH_NAME = armv8a
+
 export ATMOSPHERE_CPU_EXTENSIONS := arm_crypto_extension aarch64_crypto_extension
 endif
 
@@ -85,14 +94,27 @@ export ATMOSPHERE_BOARD_MAKE_DIR := $(ATMOSPHERE_CONFIG_MAKE_DIR)/board/$(ATMOSP
 export ATMOSPHERE_OS_MAKE_DIR    := $(ATMOSPHERE_CONFIG_MAKE_DIR)/os/$(ATMOSPHERE_OS_DIR)
 export ATMOSPHERE_CPU_MAKE_DIR   := $(ATMOSPHERE_ARCH_MAKE_DIR)/cpu/$(ATMOSPHERE_CPU_DIR)
 
+ifneq ($(strip $(ATMOSPHERE_SUB_ARCH_NAME)),)
+export ATMOSPHERE_LIBRARY_DIR := lib_$(ATMOSPHERE_BOARD_NAME)_$(ATMOSPHERE_ARCH_NAME)_$(ATMOSPHERE_SUB_ARCH_NAME)
+export ATMOSPHERE_BUILD_DIR := build_$(ATMOSPHERE_BOARD_NAME)_$(ATMOSPHERE_ARCH_NAME)_$(ATMOSPHERE_SUB_ARCH_NAME)
+else
 export ATMOSPHERE_LIBRARY_DIR := lib_$(ATMOSPHERE_BOARD_NAME)_$(ATMOSPHERE_ARCH_NAME)
 export ATMOSPHERE_BUILD_DIR := build_$(ATMOSPHERE_BOARD_NAME)_$(ATMOSPHERE_ARCH_NAME)
+endif
 
 include $(ATMOSPHERE_ARCH_MAKE_DIR)/arch.mk
 include $(ATMOSPHERE_BOARD_MAKE_DIR)/board.mk
 include $(ATMOSPHERE_OS_MAKE_DIR)/os.mk
 include $(ATMOSPHERE_CPU_MAKE_DIR)/cpu.mk
 
+
+ifneq ($(strip $(ATMOSPHERE_SUB_ARCH_NAME)),)
+export ATMOSPHERE_SUB_ARCH_MAKE_DIR  := $(ATMOSPHERE_CONFIG_MAKE_DIR)/arch/$(ATMOSPHERE_SUB_ARCH_DIR)
+
+include $(ATMOSPHERE_SUB_ARCH_MAKE_DIR)/arch.mk
+endif
+
+
 #---------------------------------------------------------------------------------
 # get atmosphere git revision information
 #---------------------------------------------------------------------------------
@@ -125,12 +147,20 @@ DATA         := data
 INCLUDES     := include
 
 GENERAL_SOURCE_DIRS=$1 $(foreach d,$(filter-out $1/arch $1/board $1/os $1/cpu $1,$(wildcard $1/*)),$(if $(wildcard $d/.),$(filter-out $d,$(call GENERAL_SOURCE_DIRS,$d)) $d,))
+
 SPECIFIC_SOURCE_DIRS=$(if $(wildcard $1/$2/$3/.*),$1/$2/$3 $(call DIR_WILDCARD,$1/$2/$3),$(if $(wildcard $1/$2/generic/.*), $1/$2/generic $(call DIR_WILDCARD,$1/$2/generic),))
+
+ifneq ($(strip $(ATMOSPHERE_SUB_ARCH_NAME)),)
+SPECIFIC_SOURCE_DIRS_ARCH=$(if $(wildcard $1/$2/$3/.*),$1/$2/$3 $(call DIR_WILDCARD,$1/$2/$3),$(if $(wildcard $1/$2/$4/.*),$1/$2/$4 $(call DIR_WILDCARD,$1/$2/$4),$(if $(wildcard $1/$2/generic/.*), $1/$2/generic $(call DIR_WILDCARD,$1/$2/generic),)))
+else
+SPECIFIC_SOURCE_DIRS_ARCH=$(if $(wildcard $1/$2/$3/.*),$1/$2/$3 $(call DIR_WILDCARD,$1/$2/$3),$(if $(wildcard $1/$2/generic/.*), $1/$2/generic $(call DIR_WILDCARD,$1/$2/generic),))
+endif
+
 UNFILTERED_SOURCE_DIRS=$1 $(foreach d,$(wildcard $1/*),$(if $(wildcard $d/.),$(call DIR_WILDCARD,$d) $d,))
 
 ALL_SOURCE_DIRS=$(foreach d,$(call GENERAL_SOURCE_DIRS,$1), \
                     $d \
-                    $(call SPECIFIC_SOURCE_DIRS,$d,arch,$(ATMOSPHERE_ARCH_DIR)) \
+                    $(call SPECIFIC_SOURCE_DIRS_ARCH,$d,arch,$(ATMOSPHERE_ARCH_DIR),$(ATMOSPHERE_SUB_ARCH_DIR)) \
                     $(call SPECIFIC_SOURCE_DIRS,$d,board,$(ATMOSPHERE_BOARD_DIR)) \
                     $(call SPECIFIC_SOURCE_DIRS,$d,os,$(ATMOSPHERE_OS_DIR)) \
                     $(call SPECIFIC_SOURCE_DIRS,$d,cpu,$(ATMOSPHERE_ARCH_DIR)/$(ATMOSPHERE_CPU_DIR)) \
@@ -147,7 +177,7 @@ FIND_SOURCE_FILES=$(foreach dir,$1,$(filter-out $(notdir $(wildcard $(dir)/*.arc
                                                     $(notdir $(wildcard $(dir)/*.os.*.$2)) \
                                                     $(notdir $(wildcard $(dir)/.cpu.*.$2)), \
                                                 $(notdir $(wildcard $(dir)/*.$2)))) \
-                  $(foreach dir,$1,$(call FIND_SPECIFIC_SOURCE_FILES,$(dir),arch,$(ATMOSPHERE_ARCH_NAME),$2)) \
+                  $(foreach dir,$1,$(call FIND_SPECIFIC_SOURCE_FILES_EX,$(dir),arch,$(ATMOSPHERE_ARCH_NAME) $(ATMOSPHERE_SUB_ARCH_NAME),$2)) \
                   $(foreach dir,$1,$(call FIND_SPECIFIC_SOURCE_FILES,$(dir),board,$(ATMOSPHERE_BOARD_NAME),$2)) \
                   $(foreach dir,$1,$(call FIND_SPECIFIC_SOURCE_FILES,$(dir),os,$(ATMOSPHERE_OS_NAME),$2)) \
                   $(foreach dir,$1,$(call FIND_SPECIFIC_SOURCE_FILES_EX,$(dir),cpu,$(ATMOSPHERE_CPU_NAME) $(ATMOSPHERE_CPU_EXTENSIONS),$2))

libraries/libmesosphere/include/mesosphere.hpp

@@ -93,3 +93,4 @@
 
 /* Deferred includes. */
 #include <mesosphere/kern_k_auto_object_impls.hpp>
+#include <mesosphere/kern_k_scheduler_impls.hpp>

libraries/libmesosphere/include/mesosphere/arch/arm64/init/kern_k_init_page_table.hpp

@@ -279,7 +279,7 @@ namespace ams::kern::arch::arm64::init {
 
                 /* Invalidate the entire tlb. */
                 cpu::DataSynchronizationBarrierInnerShareable();
-                cpu::InvalidateEntireTlb();
+                cpu::InvalidateEntireTlbInnerShareable();
 
                 /* Copy data, if we should. */
                 const u64 negative_block_size_for_mask = static_cast<u64>(-static_cast<s64>(block_size));
@@ -350,7 +350,6 @@ namespace ams::kern::arch::arm64::init {
                     /* If we don't already have an L2 table, we need to make a new one. */
                     if (!l1_entry->IsTable()) {
                         KPhysicalAddress new_table = AllocateNewPageTable(allocator);
-                        ClearNewPageTable(new_table);
                         *l1_entry = L1PageTableEntry(PageTableEntry::TableTag{}, new_table, attr.IsPrivilegedExecuteNever());
                         cpu::DataSynchronizationBarrierInnerShareable();
                     }
@@ -361,12 +360,12 @@ namespace ams::kern::arch::arm64::init {
                     if (util::IsAligned(GetInteger(virt_addr), L2ContiguousBlockSize) && util::IsAligned(GetInteger(phys_addr), L2ContiguousBlockSize) && size >= L2ContiguousBlockSize) {
                         for (size_t i = 0; i < L2ContiguousBlockSize / L2BlockSize; i++) {
                             l2_entry[i] = L2PageTableEntry(PageTableEntry::BlockTag{}, phys_addr, attr, PageTableEntry::SoftwareReservedBit_None, true);
-                            cpu::DataSynchronizationBarrierInnerShareable();
 
                             virt_addr += L2BlockSize;
                             phys_addr += L2BlockSize;
                             size      -= L2BlockSize;
                         }
+                        cpu::DataSynchronizationBarrierInnerShareable();
                         continue;
                     }
 
@@ -384,7 +383,6 @@ namespace ams::kern::arch::arm64::init {
                     /* If we don't already have an L3 table, we need to make a new one. */
                     if (!l2_entry->IsTable()) {
                         KPhysicalAddress new_table = AllocateNewPageTable(allocator);
-                        ClearNewPageTable(new_table);
                         *l2_entry = L2PageTableEntry(PageTableEntry::TableTag{}, new_table, attr.IsPrivilegedExecuteNever());
                         cpu::DataSynchronizationBarrierInnerShareable();
                     }
@@ -395,12 +393,12 @@ namespace ams::kern::arch::arm64::init {
                     if (util::IsAligned(GetInteger(virt_addr), L3ContiguousBlockSize) && util::IsAligned(GetInteger(phys_addr), L3ContiguousBlockSize) && size >= L3ContiguousBlockSize) {
                         for (size_t i = 0; i < L3ContiguousBlockSize / L3BlockSize; i++) {
                             l3_entry[i] = L3PageTableEntry(PageTableEntry::BlockTag{}, phys_addr, attr, PageTableEntry::SoftwareReservedBit_None, true);
-                            cpu::DataSynchronizationBarrierInnerShareable();
 
                             virt_addr += L3BlockSize;
                             phys_addr += L3BlockSize;
                             size      -= L3BlockSize;
                         }
+                        cpu::DataSynchronizationBarrierInnerShareable();
                         continue;
                     }
 

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_assembly_offsets.h

@@ -19,6 +19,9 @@
 /* TODO: Different header for this? */
 #define AMS_KERN_NUM_SUPERVISOR_CALLS 0xC0
 
+/* ams::kern::KThread, https://github.com/Atmosphere-NX/Atmosphere/blob/master/libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp */
+#define THREAD_THREAD_CONTEXT 0xD0
+
 /* ams::kern::KThread::StackParameters, https://github.com/Atmosphere-NX/Atmosphere/blob/master/libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp */
 #define THREAD_STACK_PARAMETERS_SIZE                    0x30
 #define THREAD_STACK_PARAMETERS_SVC_PERMISSION          0x00

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_cpu.hpp

@@ -60,6 +60,11 @@ namespace ams::kern::arch::arm64::cpu {
         __asm__ __volatile__("isb" ::: "memory");
     }
 
+    ALWAYS_INLINE void EnsureInstructionConsistencyInnerShareable() {
+        DataSynchronizationBarrierInnerShareable();
+        InstructionMemoryBarrier();
+    }
+
     ALWAYS_INLINE void EnsureInstructionConsistency() {
         DataSynchronizationBarrier();
         InstructionMemoryBarrier();
@@ -177,7 +182,6 @@ namespace ams::kern::arch::arm64::cpu {
     NOINLINE void SynchronizeAllCores();
 
     /* Cache management helpers. */
-    void ClearPageToZeroImpl(void *);
     void StoreEntireCacheForInit();
     void FlushEntireCacheForInit();
 
@@ -190,10 +194,16 @@ namespace ams::kern::arch::arm64::cpu {
 
     void InvalidateEntireInstructionCache();
 
-    ALWAYS_INLINE void ClearPageToZero(void *page) {
+    ALWAYS_INLINE void ClearPageToZero(void * const page) {
         MESOSPHERE_ASSERT(util::IsAligned(reinterpret_cast<uintptr_t>(page), PageSize));
         MESOSPHERE_ASSERT(page != nullptr);
-        ClearPageToZeroImpl(page);
+
+        uintptr_t cur = reinterpret_cast<uintptr_t>(__builtin_assume_aligned(page, PageSize));
+        const uintptr_t last = cur + PageSize - DataCacheLineSize;
+
+        for (/* ... */; cur <= last; cur += DataCacheLineSize) {
+            __asm__ __volatile__("dc zva, %[cur]" :: [cur]"r"(cur) : "memory");
+        }
     }
 
     ALWAYS_INLINE void InvalidateTlbByAsid(u32 asid) {
@@ -213,6 +223,11 @@ namespace ams::kern::arch::arm64::cpu {
         EnsureInstructionConsistency();
     }
 
+    ALWAYS_INLINE void InvalidateEntireTlbInnerShareable() {
+        __asm__ __volatile__("tlbi vmalle1is" ::: "memory");
+        EnsureInstructionConsistencyInnerShareable();
+    }
+
     ALWAYS_INLINE void InvalidateEntireTlbDataOnly() {
         __asm__ __volatile__("tlbi vmalle1is" ::: "memory");
         DataSynchronizationBarrier();

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_interrupt_manager.hpp

@@ -105,35 +105,48 @@ namespace ams::kern::arch::arm64 {
             Result UnbindLocal(s32 irq);
             Result ClearGlobal(s32 irq);
             Result ClearLocal(s32 irq);
-        public:
-            static ALWAYS_INLINE u32 DisableInterrupts() {
+        private:
+            [[nodiscard]] static ALWAYS_INLINE u32 GetInterruptsEnabledState() {
                 u64 intr_state;
-                __asm__ __volatile__("mrs %[intr_state], daif\n"
-                                     "msr daifset, #2"
+                __asm__ __volatile__("mrs   %[intr_state], daif\n"
+                                     "ubfx  %[intr_state], %[intr_state], #7, #1"
                                      : [intr_state]"=r"(intr_state)
                                      :: "memory");
                 return intr_state;
             }
+        public:
+            static ALWAYS_INLINE void EnableInterrupts() {
+                __asm__ __volatile__("msr   daifclr, #2" ::: "memory");
+            }
 
-            static ALWAYS_INLINE u32 EnableInterrupts() {
-                u64 intr_state;
-                __asm__ __volatile__("mrs %[intr_state], daif\n"
-                                     "msr daifclr, #2"
-                                     : [intr_state]"=r"(intr_state)
-                                     :: "memory");
+            static ALWAYS_INLINE void DisableInterrupts() {
+                __asm__ __volatile__("msr   daifset, #2" ::: "memory");
+            }
+
+            [[nodiscard]] static ALWAYS_INLINE u32 GetInterruptsEnabledStateAndDisableInterrupts() {
+                const auto intr_state = GetInterruptsEnabledState();
+                DisableInterrupts();
+                return intr_state;
+            }
+
+            [[nodiscard]] static ALWAYS_INLINE u32 GetInterruptsEnabledStateAndEnableInterrupts() {
+                const auto intr_state = GetInterruptsEnabledState();
+                EnableInterrupts();
                 return intr_state;
             }
 
             static ALWAYS_INLINE void RestoreInterrupts(u32 intr_state) {
-                u64 cur_state;
-                __asm__ __volatile__("mrs %[cur_state], daif" : [cur_state]"=r"(cur_state));
-                __asm__ __volatile__("msr daif, %[intr_state]" :: [intr_state]"r"((cur_state & ~0x80ul) | (intr_state & 0x80)));
+                u64 tmp;
+                __asm__ __volatile__("mrs   %[tmp], daif\n"
+                                     "bfi   %[tmp], %[intr_state], #7, #1\n"
+                                     "msr daif, %[tmp]"
+                                     : [tmp]"=&r"(tmp)
+                                     : [intr_state]"r"(intr_state)
+                                     : "memory");
             }
 
             static ALWAYS_INLINE bool AreInterruptsEnabled() {
-                u64 intr_state;
-                __asm__ __volatile__("mrs %[intr_state], daif" : [intr_state]"=r"(intr_state));
-                return (intr_state & 0x80) == 0;
+                return GetInterruptsEnabledState() == 0;
             }
     };
 

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_page_table.hpp

@@ -219,27 +219,27 @@ namespace ams::kern::arch::arm64 {
 
             Result ChangePermissions(KProcessAddress virt_addr, size_t num_pages, PageTableEntry entry_template, DisableMergeAttribute disable_merge_attr, bool refresh_mapping, PageLinkedList *page_list, bool reuse_ll);
 
-            static void PteDataSynchronizationBarrier() {
+            static ALWAYS_INLINE void PteDataSynchronizationBarrier() {
                 cpu::DataSynchronizationBarrierInnerShareable();
             }
 
-            static void ClearPageTable(KVirtualAddress table) {
+            static ALWAYS_INLINE void ClearPageTable(KVirtualAddress table) {
                 cpu::ClearPageToZero(GetVoidPointer(table));
             }
 
-            void OnTableUpdated() const {
+            ALWAYS_INLINE void OnTableUpdated() const {
                 cpu::InvalidateTlbByAsid(m_asid);
             }
 
-            void OnKernelTableUpdated() const {
+            ALWAYS_INLINE void OnKernelTableUpdated() const {
                 cpu::InvalidateEntireTlbDataOnly();
             }
 
-            void OnKernelTableSinglePageUpdated(KProcessAddress virt_addr) const {
+            ALWAYS_INLINE void OnKernelTableSinglePageUpdated(KProcessAddress virt_addr) const {
                 cpu::InvalidateTlbByVaDataOnly(virt_addr);
             }
 
-            void NoteUpdated() const {
+            ALWAYS_INLINE void NoteUpdated() const {
                 cpu::DataSynchronizationBarrier();
 
                 if (this->IsKernel()) {
@@ -249,7 +249,7 @@ namespace ams::kern::arch::arm64 {
                 }
             }
 
-            void NoteSingleKernelPageUpdated(KProcessAddress virt_addr) const {
+            ALWAYS_INLINE void NoteSingleKernelPageUpdated(KProcessAddress virt_addr) const {
                 MESOSPHERE_ASSERT(this->IsKernel());
 
                 cpu::DataSynchronizationBarrier();

libraries/libmesosphere/include/mesosphere/arch/arm64/kern_k_slab_heap_impl.hpp

@@ -45,6 +45,7 @@ namespace ams::kern::arch::arm64 {
 
             /* Select L1 cache. */
             cpu::SetCsselrEl1(0);
+            cpu::InstructionMemoryBarrier();
 
             /* Check that the L1 cache is not direct-mapped. */
             return cpu::CacheSizeIdRegisterAccessor().GetAssociativity() != 0;

libraries/libmesosphere/include/mesosphere/kern_build_config.hpp

@@ -40,6 +40,12 @@
 /* of the right side, and so this does not actually cost any space. */
 #define MESOSPHERE_ENABLE_DEVIRTUALIZED_DYNAMIC_CAST
 
+/* NOTE: This enables usage of KDebug handles as parameter for svc::GetInfo */
+/* calls which require a process parameter. This enables a debugger to obtain */
+/* address space/layout information, for example. However, it changes abi, and so */
+/* this define allows toggling the extension. */
+#define MESOSPHERE_ENABLE_GET_INFO_OF_DEBUG_PROCESS
+
 /* NOTE: This uses currently-reserved bits inside the MapRange capability */
 /* in order to support large physical addresses (40-bit instead of 36). */
 /* This is toggleable in order to disable it if N ever uses those bits. */

libraries/libmesosphere/include/mesosphere/kern_k_dynamic_resource_manager.hpp

@@ -46,7 +46,7 @@ namespace ams::kern {
                 return m_slab_heap->Allocate(m_page_allocator);
             }
 
-            void Free(T *t) const {
+            ALWAYS_INLINE void Free(T *t) const {
                 m_slab_heap->Free(t);
             }
     };

libraries/libmesosphere/include/mesosphere/kern_k_scheduler.hpp

@@ -211,18 +211,6 @@ namespace ams::kern {
             static consteval bool ValidateAssemblyOffsets();
     };
 
-    consteval bool KScheduler::ValidateAssemblyOffsets() {
-        static_assert(AMS_OFFSETOF(KScheduler, m_state.needs_scheduling)        == KSCHEDULER_NEEDS_SCHEDULING);
-        static_assert(AMS_OFFSETOF(KScheduler, m_state.interrupt_task_runnable) == KSCHEDULER_INTERRUPT_TASK_RUNNABLE);
-        static_assert(AMS_OFFSETOF(KScheduler, m_state.highest_priority_thread) == KSCHEDULER_HIGHEST_PRIORITY_THREAD);
-        static_assert(AMS_OFFSETOF(KScheduler, m_state.idle_thread_stack)       == KSCHEDULER_IDLE_THREAD_STACK);
-        static_assert(AMS_OFFSETOF(KScheduler, m_state.prev_thread)             == KSCHEDULER_PREVIOUS_THREAD);
-        static_assert(AMS_OFFSETOF(KScheduler, m_state.interrupt_task_manager)  == KSCHEDULER_INTERRUPT_TASK_MANAGER);
-
-        return true;
-    }
-    static_assert(KScheduler::ValidateAssemblyOffsets());
-
     class KScopedSchedulerLock : KScopedLock<KScheduler::LockType> {
         public:
             explicit ALWAYS_INLINE KScopedSchedulerLock() : KScopedLock(KScheduler::s_scheduler_lock) { /* ... */ }

libraries/libmesosphere/include/mesosphere/kern_k_scheduler_impls.hpp

@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 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/>.
+ */
+#pragma once
+#include <mesosphere/kern_common.hpp>
+#include <mesosphere/kern_k_scheduler.hpp>
+#include <mesosphere/kern_select_interrupt_manager.hpp>
+
+namespace ams::kern {
+
+    /* NOTE: This header is included after all main headers. */
+    consteval bool KScheduler::ValidateAssemblyOffsets() {
+        static_assert(AMS_OFFSETOF(KScheduler, m_state.needs_scheduling)        == KSCHEDULER_NEEDS_SCHEDULING);
+        static_assert(AMS_OFFSETOF(KScheduler, m_state.interrupt_task_runnable) == KSCHEDULER_INTERRUPT_TASK_RUNNABLE);
+        static_assert(AMS_OFFSETOF(KScheduler, m_state.highest_priority_thread) == KSCHEDULER_HIGHEST_PRIORITY_THREAD);
+        static_assert(AMS_OFFSETOF(KScheduler, m_state.idle_thread_stack)       == KSCHEDULER_IDLE_THREAD_STACK);
+        static_assert(AMS_OFFSETOF(KScheduler, m_state.prev_thread)             == KSCHEDULER_PREVIOUS_THREAD);
+        static_assert(AMS_OFFSETOF(KScheduler, m_state.interrupt_task_manager)  == KSCHEDULER_INTERRUPT_TASK_MANAGER);
+
+        return true;
+    }
+    static_assert(KScheduler::ValidateAssemblyOffsets());
+
+    ALWAYS_INLINE void KScheduler::RescheduleOtherCores(u64 cores_needing_scheduling) {
+        if (const u64 core_mask = cores_needing_scheduling & ~(1ul << m_core_id); core_mask != 0) {
+            cpu::DataSynchronizationBarrier();
+            Kernel::GetInterruptManager().SendInterProcessorInterrupt(KInterruptName_Scheduler, core_mask);
+        }
+    }
+
+}

libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp

@@ -405,8 +405,6 @@ namespace ams::kern {
             constexpr ThreadState GetState() const { return static_cast<ThreadState>(m_thread_state & ThreadState_Mask); }
             constexpr ThreadState GetRawState() const { return m_thread_state; }
 
-            NOINLINE KThreadContext *GetContextForSchedulerLoop();
-
             constexpr uintptr_t GetConditionVariableKey() const { return m_condvar_key; }
             constexpr uintptr_t GetAddressArbiterKey() const { return m_condvar_key; }
 
@@ -624,9 +622,7 @@ namespace ams::kern {
             void OnTimer();
             void DoWorkerTaskImpl();
         public:
-            static constexpr bool IsConditionVariableThreadTreeValid() {
-                return ConditionVariableThreadTreeTraits::IsValid();
-            }
+            static consteval bool IsKThreadStructurallyValid();
 
             static KThread *GetThreadFromId(u64 thread_id);
             static Result GetThreadList(s32 *out_num_threads, ams::kern::svc::KUserPointer<u64 *> out_thread_ids, s32 max_out_count);
@@ -634,7 +630,18 @@ namespace ams::kern {
             using ConditionVariableThreadTreeType = ConditionVariableThreadTree;
     };
     static_assert(alignof(KThread) == 0x10);
-    static_assert(KThread::IsConditionVariableThreadTreeValid());
+
+    consteval bool KThread::IsKThreadStructurallyValid() {
+        /* Check that the condition variable tree is valid. */
+        static_assert(ConditionVariableThreadTreeTraits::IsValid());
+
+        /* Check that the assembly offsets are valid. */
+        static_assert(AMS_OFFSETOF(KThread, m_thread_context) == THREAD_THREAD_CONTEXT);
+
+        return true;
+    }
+
+    static_assert(KThread::IsKThreadStructurallyValid());
 
     class KScopedDisableDispatch {
         public:

libraries/libmesosphere/include/mesosphere/kern_select_interrupt_manager.hpp

@@ -41,7 +41,7 @@ namespace ams::kern {
         private:
             u32 m_prev_intr_state;
         public:
-            ALWAYS_INLINE KScopedInterruptDisable() : m_prev_intr_state(KInterruptManager::DisableInterrupts()) { /* ... */ }
+            ALWAYS_INLINE KScopedInterruptDisable() : m_prev_intr_state(KInterruptManager::GetInterruptsEnabledStateAndDisableInterrupts()) { /* ... */ }
             ALWAYS_INLINE ~KScopedInterruptDisable() { KInterruptManager::RestoreInterrupts(m_prev_intr_state); }
     };
 
@@ -51,7 +51,7 @@ namespace ams::kern {
         private:
             u32 m_prev_intr_state;
         public:
-            ALWAYS_INLINE KScopedInterruptEnable() : m_prev_intr_state(KInterruptManager::EnableInterrupts()) { /* ... */ }
+            ALWAYS_INLINE KScopedInterruptEnable() : m_prev_intr_state(KInterruptManager::GetInterruptsEnabledStateAndEnableInterrupts()) { /* ... */ }
             ALWAYS_INLINE ~KScopedInterruptEnable() { KInterruptManager::RestoreInterrupts(m_prev_intr_state); }
     };
 

libraries/libmesosphere/source/arch/arm64/kern_cpu_asm.s

@@ -61,139 +61,3 @@ _ZN3ams4kern4arch5arm643cpu23SynchronizeAllCoresImplEPii:
 5:
     stlr wzr, [x0]
     ret
-
-
-/* ams::kern::arch::arm64::cpu::ClearPageToZero(void *) */
-.section    .text._ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv, "ax", %progbits
-.global     _ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv
-.type       _ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv, %function
-_ZN3ams4kern4arch5arm643cpu19ClearPageToZeroImplEPv:
-    /* Efficiently clear the page using dc zva. */
-    dc      zva, x0
-    add     x8, x0, #0x040
-    dc      zva, x8
-    add     x8, x0, #0x080
-    dc      zva, x8
-    add     x8, x0, #0x0c0
-    dc      zva, x8
-    add     x8, x0, #0x100
-    dc      zva, x8
-    add     x8, x0, #0x140
-    dc      zva, x8
-    add     x8, x0, #0x180
-    dc      zva, x8
-    add     x8, x0, #0x1c0
-    dc      zva, x8
-    add     x8, x0, #0x200
-    dc      zva, x8
-    add     x8, x0, #0x240
-    dc      zva, x8
-    add     x8, x0, #0x280
-    dc      zva, x8
-    add     x8, x0, #0x2c0
-    dc      zva, x8
-    add     x8, x0, #0x300
-    dc      zva, x8
-    add     x8, x0, #0x340
-    dc      zva, x8
-    add     x8, x0, #0x380
-    dc      zva, x8
-    add     x8, x0, #0x3c0
-    dc      zva, x8
-    add     x8, x0, #0x400
-    dc      zva, x8
-    add     x8, x0, #0x440
-    dc      zva, x8
-    add     x8, x0, #0x480
-    dc      zva, x8
-    add     x8, x0, #0x4c0
-    dc      zva, x8
-    add     x8, x0, #0x500
-    dc      zva, x8
-    add     x8, x0, #0x540
-    dc      zva, x8
-    add     x8, x0, #0x580
-    dc      zva, x8
-    add     x8, x0, #0x5c0
-    dc      zva, x8
-    add     x8, x0, #0x600
-    dc      zva, x8
-    add     x8, x0, #0x640
-    dc      zva, x8
-    add     x8, x0, #0x680
-    dc      zva, x8
-    add     x8, x0, #0x6c0
-    dc      zva, x8
-    add     x8, x0, #0x700
-    dc      zva, x8
-    add     x8, x0, #0x740
-    dc      zva, x8
-    add     x8, x0, #0x780
-    dc      zva, x8
-    add     x8, x0, #0x7c0
-    dc      zva, x8
-    add     x8, x0, #0x800
-    dc      zva, x8
-    add     x8, x0, #0x840
-    dc      zva, x8
-    add     x8, x0, #0x880
-    dc      zva, x8
-    add     x8, x0, #0x8c0
-    dc      zva, x8
-    add     x8, x0, #0x900
-    dc      zva, x8
-    add     x8, x0, #0x940
-    dc      zva, x8
-    add     x8, x0, #0x980
-    dc      zva, x8
-    add     x8, x0, #0x9c0
-    dc      zva, x8
-    add     x8, x0, #0xa00
-    dc      zva, x8
-    add     x8, x0, #0xa40
-    dc      zva, x8
-    add     x8, x0, #0xa80
-    dc      zva, x8
-    add     x8, x0, #0xac0
-    dc      zva, x8
-    add     x8, x0, #0xb00
-    dc      zva, x8
-    add     x8, x0, #0xb40
-    dc      zva, x8
-    add     x8, x0, #0xb80
-    dc      zva, x8
-    add     x8, x0, #0xbc0
-    dc      zva, x8
-    add     x8, x0, #0xc00
-    dc      zva, x8
-    add     x8, x0, #0xc40
-    dc      zva, x8
-    add     x8, x0, #0xc80
-    dc      zva, x8
-    add     x8, x0, #0xcc0
-    dc      zva, x8
-    add     x8, x0, #0xd00
-    dc      zva, x8
-    add     x8, x0, #0xd40
-    dc      zva, x8
-    add     x8, x0, #0xd80
-    dc      zva, x8
-    add     x8, x0, #0xdc0
-    dc      zva, x8
-    add     x8, x0, #0xe00
-    dc      zva, x8
-    add     x8, x0, #0xe40
-    dc      zva, x8
-    add     x8, x0, #0xe80
-    dc      zva, x8
-    add     x8, x0, #0xec0
-    dc      zva, x8
-    add     x8, x0, #0xf00
-    dc      zva, x8
-    add     x8, x0, #0xf40
-    dc      zva, x8
-    add     x8, x0, #0xf80
-    dc      zva, x8
-    add     x8, x0, #0xfc0
-    dc      zva, x8
-    ret

libraries/libmesosphere/source/arch/arm64/kern_exception_handlers.cpp

@@ -225,7 +225,7 @@ namespace ams::kern::arch::arm64 {
             if (AMS_UNLIKELY(GetCurrentThread().IsSingleStep())) {
                 GetCurrentThread().ClearSingleStep();
                 cpu::MonitorDebugSystemControlRegisterAccessor().SetSoftwareStep(false).Store();
-                cpu::EnsureInstructionConsistency();
+                cpu::InstructionMemoryBarrier();
             }
             #endif
 

libraries/libmesosphere/source/arch/arm64/kern_k_interrupt_manager.cpp

@@ -201,7 +201,7 @@ namespace ams::kern::arch::arm64 {
         if (user_mode) {
             KThread *cur_thread = GetCurrentThreadPointer();
             if (cur_thread->IsTerminationRequested()) {
-                KScopedInterruptEnable ei;
+                EnableInterrupts();
                 cur_thread->Exit();
             }
         }
@@ -212,13 +212,14 @@ namespace ams::kern::arch::arm64 {
 
         R_UNLESS(KInterruptController::IsGlobal(irq) || KInterruptController::IsLocal(irq), svc::ResultOutOfRange());
 
-        KScopedInterruptDisable di;
-
         if (KInterruptController::IsGlobal(irq)) {
+            KScopedInterruptDisable di;
             KScopedSpinLock lk(this->GetGlobalInterruptLock());
             return this->BindGlobal(handler, irq, core_id, priority, manual_clear, level);
         } else {
             MESOSPHERE_ASSERT(core_id == GetCurrentCoreId());
+
+            KScopedInterruptDisable di;
             return this->BindLocal(handler, irq, priority, manual_clear);
         }
     }
@@ -228,13 +229,16 @@ namespace ams::kern::arch::arm64 {
 
         R_UNLESS(KInterruptController::IsGlobal(irq) || KInterruptController::IsLocal(irq), svc::ResultOutOfRange());
 
-        KScopedInterruptDisable di;
 
         if (KInterruptController::IsGlobal(irq)) {
+            KScopedInterruptDisable di;
+
             KScopedSpinLock lk(this->GetGlobalInterruptLock());
             return this->UnbindGlobal(irq);
         } else {
             MESOSPHERE_ASSERT(core_id == GetCurrentCoreId());
+
+            KScopedInterruptDisable di;
             return this->UnbindLocal(irq);
         }
     }
@@ -244,13 +248,15 @@ namespace ams::kern::arch::arm64 {
 
         R_UNLESS(KInterruptController::IsGlobal(irq) || KInterruptController::IsLocal(irq), svc::ResultOutOfRange());
 
-        KScopedInterruptDisable di;
 
         if (KInterruptController::IsGlobal(irq)) {
+            KScopedInterruptDisable di;
             KScopedSpinLock lk(this->GetGlobalInterruptLock());
             return this->ClearGlobal(irq);
         } else {
             MESOSPHERE_ASSERT(core_id == GetCurrentCoreId());
+
+            KScopedInterruptDisable di;
             return this->ClearLocal(irq);
         }
     }

libraries/libmesosphere/source/arch/arm64/kern_k_page_table.cpp

@@ -169,10 +169,10 @@ namespace ams::kern::arch::arm64 {
         m_manager = std::addressof(Kernel::GetSystemPageTableManager());
 
         /* Allocate a page for ttbr. */
+        /* NOTE: It is a postcondition of page table manager allocation that the page is all-zero. */
         const u64 asid_tag = (static_cast<u64>(m_asid) << 48ul);
         const KVirtualAddress page = m_manager->Allocate();
         MESOSPHERE_ASSERT(page != Null<KVirtualAddress>);
-        cpu::ClearPageToZero(GetVoidPointer(page));
         m_ttbr = GetInteger(KPageTableBase::GetLinearMappedPhysicalAddress(page)) | asid_tag;
 
         /* Initialize the base page table. */
@@ -1058,7 +1058,7 @@ namespace ams::kern::arch::arm64 {
         auto sw_reserved_bits = PageTableEntry::EncodeSoftwareReservedBits(head_entry->IsHeadMergeDisabled(), head_entry->IsHeadAndBodyMergeDisabled(), tail_entry->IsTailMergeDisabled());
 
         /* Merge! */
-        PteDataSynchronizationBarrier();
+        /* NOTE: As of 13.1.0, Nintendo does not do: PteDataSynchronizationBarrier(); */
         *l1_entry = L1PageTableEntry(PageTableEntry::BlockTag{}, phys_addr, PageTableEntry(entry_template), sw_reserved_bits, false);
 
         /* Note that we updated. */

libraries/libmesosphere/source/arch/arm64/svc/kern_svc_exception_asm.s

@@ -28,7 +28,7 @@ _ZN3ams4kern3svc25CallReturnFromException64Ev:
     stp     x20, x21, [sp, #(EXCEPTION_CONTEXT_X20_X21)]
     stp     x22, x23, [sp, #(EXCEPTION_CONTEXT_X22_X23)]
     stp     x24, x25, [sp, #(EXCEPTION_CONTEXT_X24_X25)]
-    stp     x26, x26, [sp, #(EXCEPTION_CONTEXT_X26_X27)]
+    stp     x26, x27, [sp, #(EXCEPTION_CONTEXT_X26_X27)]
     stp     x28, x29, [sp, #(EXCEPTION_CONTEXT_X28_X29)]
 
     /* Call ams::kern::arch::arm64::ReturnFromException(result). */

libraries/libmesosphere/source/arch/arm64/svc/kern_svc_light_ipc_asm.s

@@ -50,10 +50,6 @@ _ZN3ams4kern3svc26CallSendSyncRequestLight64Ev:
 .global     _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev
 .type       _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev, %function
 _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev:
-    /* Load x4-x7 from where the svc handler stores them. */
-    ldp     x4, x5, [sp, #(8 * 0)]
-    ldp     x6, x7, [sp, #(8 * 2)]
-
     /* Allocate space for the light ipc data. */
     sub     sp, sp, #(4 * 8)
 
@@ -78,13 +74,8 @@ _ZN3ams4kern3svc32CallSendSyncRequestLight64From32Ev:
     /* Free the stack space for the light ipc data. */
     add     sp, sp, #(4 * 8)
 
-    /* Save x4-x7 to where the svc handler stores them. */
-    stp     x4, x5, [sp, #(8 * 0)]
-    stp     x6, x7, [sp, #(8 * 2)]
-
     ret
 
-
 /* ams::kern::svc::CallReplyAndReceiveLight64() */
 .section    .text._ZN3ams4kern3svc26CallReplyAndReceiveLight64Ev, "ax", %progbits
 .global     _ZN3ams4kern3svc26CallReplyAndReceiveLight64Ev
@@ -121,10 +112,6 @@ _ZN3ams4kern3svc26CallReplyAndReceiveLight64Ev:
 .global     _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev
 .type       _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev, %function
 _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev:
-    /* Load x4-x7 from where the svc handler stores them. */
-    ldp     x4, x5, [sp, #(8 * 0)]
-    ldp     x6, x7, [sp, #(8 * 2)]
-
     /* Allocate space for the light ipc data. */
     sub     sp, sp, #(4 * 8)
 
@@ -149,8 +136,4 @@ _ZN3ams4kern3svc32CallReplyAndReceiveLight64From32Ev:
     /* Free the stack space for the light ipc data. */
     add     sp, sp, #(4 * 8)
 
-    /* Save x4-x7 to where the svc handler stores them. */
-    stp     x4, x5, [sp, #(8 * 0)]
-    stp     x6, x7, [sp, #(8 * 2)]
-
     ret

libraries/libmesosphere/source/board/nintendo/nx/kern_k_device_page_table.cpp

@@ -656,9 +656,8 @@ namespace ams::kern::board::nintendo::nx {
         MESOSPHERE_ASSERT(IsValidPhysicalAddress(table_phys_addr));
         Kernel::GetSystemPageTableManager().Open(table_virt_addr, 1);
 
-        /* Clear the page and save it. */
+        /* Save the page. Note that it is a pre-condition that the page is cleared, when allocated from the system page table manager. */
         /* NOTE: Nintendo does not check the result of StoreDataCache. */
-        cpu::ClearPageToZero(GetVoidPointer(table_virt_addr));
         cpu::StoreDataCache(GetVoidPointer(table_virt_addr), PageDirectorySize);
         g_reserved_table_phys_addr = table_phys_addr;
 

libraries/libmesosphere/source/board/nintendo/nx/kern_k_sleep_manager.cpp

@@ -341,7 +341,9 @@ namespace ams::kern::board::nintendo::nx {
 
             /* Restore pmu registers. */
             cpu::SetPmUserEnrEl0(0);
-            cpu::PerformanceMonitorsControlRegisterAccessor().SetEventCounterReset(true).SetCycleCounterReset(true).Store();
+            cpu::PerformanceMonitorsControlRegisterAccessor(0).SetEventCounterReset(true).SetCycleCounterReset(true).Store();
+            cpu::EnsureInstructionConsistency();
+
             cpu::SetPmOvsClrEl0(static_cast<u64>(static_cast<u32>(~u32())));
             cpu::SetPmIntEnClrEl1(static_cast<u64>(static_cast<u32>(~u32())));
             cpu::SetPmCntEnClrEl0(static_cast<u64>(static_cast<u32>(~u32())));

libraries/libmesosphere/source/kern_k_memory_block_manager.cpp

@@ -19,7 +19,7 @@ namespace ams::kern {
 
     namespace {
 
-        constexpr std::tuple<KMemoryState, const char *> MemoryStateNames[] = {
+        constexpr const std::pair<KMemoryState, const char *> MemoryStateNames[] = {
             {KMemoryState_Free               , "----- Free -----"},
             {KMemoryState_Io                 , "Io              "},
             {KMemoryState_Static             , "Static          "},
@@ -41,6 +41,7 @@ namespace ams::kern {
             {KMemoryState_Kernel             , "Kernel          "},
             {KMemoryState_GeneratedCode      , "GeneratedCode   "},
             {KMemoryState_CodeOut            , "CodeOut         "},
+            {KMemoryState_Coverage           , "Coverage        "},
         };
 
         constexpr const char *GetMemoryStateName(KMemoryState state) {

libraries/libmesosphere/source/kern_k_scheduler.cpp

@@ -79,13 +79,6 @@ namespace ams::kern {
         RescheduleCurrentCore();
     }
 
-    void KScheduler::RescheduleOtherCores(u64 cores_needing_scheduling) {
-        if (const u64 core_mask = cores_needing_scheduling & ~(1ul << m_core_id); core_mask != 0) {
-            cpu::DataSynchronizationBarrier();
-            Kernel::GetInterruptManager().SendInterProcessorInterrupt(KInterruptName_Scheduler, core_mask);
-        }
-    }
-
     u64 KScheduler::UpdateHighestPriorityThread(KThread *highest_thread) {
         if (KThread *prev_highest_thread = m_state.highest_priority_thread; AMS_LIKELY(prev_highest_thread != highest_thread)) {
             if (AMS_LIKELY(prev_highest_thread != nullptr)) {
@@ -254,9 +247,24 @@ namespace ams::kern {
 
         MESOSPHERE_KTRACE_THREAD_SWITCH(next_thread);
 
+        #if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
+        /* Ensure the single-step bit in mdscr reflects the correct single-step state for the new thread. */
+        cpu::MonitorDebugSystemControlRegisterAccessor().SetSoftwareStep(next_thread->IsSingleStep()).Store();
+        #endif
+
         /* Switch the current process, if we're switching processes. */
         if (KProcess *next_process = next_thread->GetOwnerProcess(); next_process != cur_process) {
             KProcess::Switch(cur_process, next_process);
+        } else {
+            /* The single-step bit set up above requires an instruction synchronization barrier, to ensure */
+            /* the state change takes before we actually perform a return which might break-to-step. */
+            /* KProcess::Switch performs an isb incidentally, and so when we're changing process we */
+            /* can piggy-back off of that isb to avoid unnecessarily emptying the pipeline twice. */
+            /* However, this means that when we're switching to thread in a different process, */
+            /* we must ensure that we still isb. In practice, gcc will deduplicate into a single isb. */
+            #if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
+            cpu::InstructionMemoryBarrier();
+            #endif
         }
 
         /* Set the new thread. */

libraries/libmesosphere/source/kern_k_thread.cpp

@@ -1315,10 +1315,6 @@ namespace ams::kern {
         }
     }
 
-    KThreadContext *KThread::GetContextForSchedulerLoop() {
-        return std::addressof(this->GetContext());
-    }
-
     KThread *KThread::GetThreadFromId(u64 thread_id) {
         /* Lock the list. */
         KThread::ListAccessor accessor;

libraries/libmesosphere/source/svc/kern_svc_info.cpp

@@ -38,6 +38,80 @@ namespace ams::kern::svc {
             return ResultSuccess();
         }
 
+        Result GetInfoImpl(u64 *out, ams::svc::InfoType info_type, KProcess *process) {
+            switch (info_type) {
+                case ams::svc::InfoType_CoreMask:
+                    *out = process->GetCoreMask();
+                    break;
+                case ams::svc::InfoType_PriorityMask:
+                    *out = process->GetPriorityMask();
+                    break;
+                case ams::svc::InfoType_AliasRegionAddress:
+                    *out = GetInteger(process->GetPageTable().GetAliasRegionStart());
+                    break;
+                case ams::svc::InfoType_AliasRegionSize:
+                    *out = process->GetPageTable().GetAliasRegionSize();
+                    break;
+                case ams::svc::InfoType_HeapRegionAddress:
+                    *out = GetInteger(process->GetPageTable().GetHeapRegionStart());
+                    break;
+                case ams::svc::InfoType_HeapRegionSize:
+                    *out = process->GetPageTable().GetHeapRegionSize();
+                    break;
+                case ams::svc::InfoType_TotalMemorySize:
+                    *out = process->GetTotalUserPhysicalMemorySize();
+                    break;
+                case ams::svc::InfoType_UsedMemorySize:
+                    *out = process->GetUsedUserPhysicalMemorySize();
+                    break;
+                case ams::svc::InfoType_AslrRegionAddress:
+                    *out = GetInteger(process->GetPageTable().GetAliasCodeRegionStart());
+                    break;
+                case ams::svc::InfoType_AslrRegionSize:
+                    *out = process->GetPageTable().GetAliasCodeRegionSize();
+                    break;
+                case ams::svc::InfoType_StackRegionAddress:
+                    *out = GetInteger(process->GetPageTable().GetStackRegionStart());
+                    break;
+                case ams::svc::InfoType_StackRegionSize:
+                    *out = process->GetPageTable().GetStackRegionSize();
+                    break;
+                case ams::svc::InfoType_SystemResourceSizeTotal:
+                    *out = process->GetTotalSystemResourceSize();
+                    break;
+                case ams::svc::InfoType_SystemResourceSizeUsed:
+                    *out = process->GetUsedSystemResourceSize();
+                    break;
+                case ams::svc::InfoType_ProgramId:
+                    *out = process->GetProgramId();
+                    break;
+                case ams::svc::InfoType_UserExceptionContextAddress:
+                    *out = GetInteger(process->GetProcessLocalRegionAddress());
+                    break;
+                case ams::svc::InfoType_TotalNonSystemMemorySize:
+                    *out = process->GetTotalNonSystemUserPhysicalMemorySize();
+                    break;
+                case ams::svc::InfoType_UsedNonSystemMemorySize:
+                    *out = process->GetUsedNonSystemUserPhysicalMemorySize();
+                    break;
+                case ams::svc::InfoType_IsApplication:
+                    *out = process->IsApplication();
+                    break;
+                case ams::svc::InfoType_FreeThreadCount:
+                    if (KResourceLimit *resource_limit = process->GetResourceLimit(); resource_limit != nullptr) {
+                        const auto current_value = resource_limit->GetCurrentValue(ams::svc::LimitableResource_ThreadCountMax);
+                        const auto limit_value   = resource_limit->GetLimitValue(ams::svc::LimitableResource_ThreadCountMax);
+                        *out = limit_value - current_value;
+                    } else {
+                        *out = 0;
+                    }
+                    break;
+                MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
+            }
+
+            return ResultSuccess();
+        }
+
         Result GetInfo(u64 *out, ams::svc::InfoType info_type, ams::svc::Handle handle, u64 info_subtype) {
             switch (info_type) {
                 case ams::svc::InfoType_CoreMask:
@@ -66,77 +140,34 @@ namespace ams::kern::svc {
 
                         /* Get the process from its handle. */
                         KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(handle);
+
+                        #if defined(MESOSPHERE_ENABLE_GET_INFO_OF_DEBUG_PROCESS)
+                        /* If we the process is valid, use it. */
+                        if (process.IsNotNull()) {
+                            return GetInfoImpl(out, info_type, process.GetPointerUnsafe());
+                        }
+
+                        /* Otherwise, as a mesosphere extension check if we were passed a usable KDebug. */
+                        KScopedAutoObject debug = GetCurrentProcess().GetHandleTable().GetObject<KDebug>(handle);
+                        R_UNLESS(debug.IsNotNull(), svc::ResultInvalidHandle());
+
+                        /* Get the process from the debug object. */
+                        /* TODO: ResultInvalidHandle()? */
+                        R_UNLESS(debug->IsAttached(),  svc::ResultProcessTerminated());
+                        R_UNLESS(debug->OpenProcess(), svc::ResultProcessTerminated());
+
+                        /* Close the process when we're done. */
+                        ON_SCOPE_EXIT { debug->CloseProcess(); };
+
+                        /* Return the info. */
+                        return GetInfoImpl(out, info_type, debug->GetProcessUnsafe());
+                        #else
+                        /* Verify that the process is valid. */
                         R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
 
-                        switch (info_type) {
-                            case ams::svc::InfoType_CoreMask:
-                                *out = process->GetCoreMask();
-                                break;
-                            case ams::svc::InfoType_PriorityMask:
-                                *out = process->GetPriorityMask();
-                                break;
-                            case ams::svc::InfoType_AliasRegionAddress:
-                                *out = GetInteger(process->GetPageTable().GetAliasRegionStart());
-                                break;
-                            case ams::svc::InfoType_AliasRegionSize:
-                                *out = process->GetPageTable().GetAliasRegionSize();
-                                break;
-                            case ams::svc::InfoType_HeapRegionAddress:
-                                *out = GetInteger(process->GetPageTable().GetHeapRegionStart());
-                                break;
-                            case ams::svc::InfoType_HeapRegionSize:
-                                *out = process->GetPageTable().GetHeapRegionSize();
-                                break;
-                            case ams::svc::InfoType_TotalMemorySize:
-                                *out = process->GetTotalUserPhysicalMemorySize();
-                                break;
-                            case ams::svc::InfoType_UsedMemorySize:
-                                *out = process->GetUsedUserPhysicalMemorySize();
-                                break;
-                            case ams::svc::InfoType_AslrRegionAddress:
-                                *out = GetInteger(process->GetPageTable().GetAliasCodeRegionStart());
-                                break;
-                            case ams::svc::InfoType_AslrRegionSize:
-                                *out = process->GetPageTable().GetAliasCodeRegionSize();
-                                break;
-                            case ams::svc::InfoType_StackRegionAddress:
-                                *out = GetInteger(process->GetPageTable().GetStackRegionStart());
-                                break;
-                            case ams::svc::InfoType_StackRegionSize:
-                                *out = process->GetPageTable().GetStackRegionSize();
-                                break;
-                            case ams::svc::InfoType_SystemResourceSizeTotal:
-                                *out = process->GetTotalSystemResourceSize();
-                                break;
-                            case ams::svc::InfoType_SystemResourceSizeUsed:
-                                *out = process->GetUsedSystemResourceSize();
-                                break;
-                            case ams::svc::InfoType_ProgramId:
-                                *out = process->GetProgramId();
-                                break;
-                            case ams::svc::InfoType_UserExceptionContextAddress:
-                                *out = GetInteger(process->GetProcessLocalRegionAddress());
-                                break;
-                            case ams::svc::InfoType_TotalNonSystemMemorySize:
-                                *out = process->GetTotalNonSystemUserPhysicalMemorySize();
-                                break;
-                            case ams::svc::InfoType_UsedNonSystemMemorySize:
-                                *out = process->GetUsedNonSystemUserPhysicalMemorySize();
-                                break;
-                            case ams::svc::InfoType_IsApplication:
-                                *out = process->IsApplication();
-                                break;
-                            case ams::svc::InfoType_FreeThreadCount:
-                                if (KResourceLimit *resource_limit = process->GetResourceLimit(); resource_limit != nullptr) {
-                                    const auto current_value = resource_limit->GetCurrentValue(ams::svc::LimitableResource_ThreadCountMax);
-                                    const auto limit_value   = resource_limit->GetLimitValue(ams::svc::LimitableResource_ThreadCountMax);
-                                    *out = limit_value - current_value;
-                                } else {
-                                    *out = 0;
-                                }
-                                break;
-                            MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
-                        }
+                        /* Return the relevant info. */
+                        return GetInfoImpl(out, info_type, process.GetPointerUnsafe());
+                        #endif
                     }
                     break;
                 case ams::svc::InfoType_DebuggerAttached:

libraries/libstratosphere/include/stratosphere/fssystem/fssystem_utility.hpp

@@ -118,12 +118,12 @@ namespace ams::fssystem {
 
     /* Copy API. */
     Result CopyFile(fs::fsa::IFileSystem *dst_fs, fs::fsa::IFileSystem *src_fs, const char *dst_parent_path, const char *src_path, const fs::DirectoryEntry *dir_ent, void *work_buf, size_t work_buf_size);
-    NX_INLINE Result CopyFile(fs::fsa::IFileSystem *fs, const char *dst_parent_path, const char *src_path, const fs::DirectoryEntry *dir_ent, void *work_buf, size_t work_buf_size) {
+    ALWAYS_INLINE Result CopyFile(fs::fsa::IFileSystem *fs, const char *dst_parent_path, const char *src_path, const fs::DirectoryEntry *dir_ent, void *work_buf, size_t work_buf_size) {
         return CopyFile(fs, fs, dst_parent_path, src_path, dir_ent, work_buf, work_buf_size);
     }
 
     Result CopyDirectoryRecursively(fs::fsa::IFileSystem *dst_fs, fs::fsa::IFileSystem *src_fs, const char *dst_path, const char *src_path, void *work_buf, size_t work_buf_size);
-    NX_INLINE Result CopyDirectoryRecursively(fs::fsa::IFileSystem *fs, const char *dst_path, const char *src_path, void *work_buf, size_t work_buf_size) {
+    ALWAYS_INLINE Result CopyDirectoryRecursively(fs::fsa::IFileSystem *fs, const char *dst_path, const char *src_path, void *work_buf, size_t work_buf_size) {
         return CopyDirectoryRecursively(fs, fs, dst_path, src_path, work_buf, work_buf_size);
     }
 
@@ -148,11 +148,11 @@ namespace ams::fssystem {
     Result EnsureDirectoryRecursively(fs::fsa::IFileSystem *fs, const char *path);
     Result EnsureParentDirectoryRecursively(fs::fsa::IFileSystem *fs, const char *path);
 
-    template<typename F>
-    NX_INLINE Result RetryFinitelyForTargetLocked(F f) {
+    template<s64 RetryMilliSeconds = 100>
+    ALWAYS_INLINE Result RetryFinitelyForTargetLocked(auto f) {
         /* Retry up to 10 times, 100ms between retries. */
         constexpr s32 MaxRetryCount = 10;
-        constexpr TimeSpan RetryWaitTime = TimeSpan::FromMilliSeconds(100);
+        constexpr TimeSpan RetryWaitTime = TimeSpan::FromMilliSeconds(RetryMilliSeconds);
 
         s32 remaining_retries = MaxRetryCount;
         while (true) {

libraries/libstratosphere/include/stratosphere/socket/socket_api.hpp

@@ -43,6 +43,7 @@ namespace ams::socket {
 
     s32 Shutdown(s32 desc, ShutdownMethod how);
 
+    s32 Socket(Family domain, Type type, Protocol protocol);
     s32 SocketExempt(Family domain, Type type, Protocol protocol);
 
     s32 Accept(s32 desc, SockAddr *out_address, SockLenT *out_addr_len);

libraries/libstratosphere/include/stratosphere/socket/socket_system_config.hpp

@@ -57,4 +57,42 @@ namespace ams::socket {
             }
     };
 
+    class SystemConfigLightDefault : public Config {
+        public:
+            static constexpr size_t DefaultTcpInitialSendBufferSize     = 16_KB;
+            static constexpr size_t DefaultTcpInitialReceiveBufferSize  = 16_KB;
+            static constexpr size_t DefaultTcpAutoSendBufferSizeMax     = 0_KB;
+            static constexpr size_t DefaultTcpAutoReceiveBufferSizeMax  = 0_KB;
+            static constexpr size_t DefaultUdpSendBufferSize            = 9_KB;
+            static constexpr size_t DefaultUdpReceiveBufferSize         = 42240;
+            static constexpr auto   DefaultSocketBufferEfficiency       = 2;
+            static constexpr auto   DefaultConcurrency                  = 2;
+            static constexpr size_t DefaultAllocatorPoolSize            = 64_KB;
+
+            static constexpr size_t PerTcpSocketWorstCaseMemoryPoolSize = [] {
+                constexpr size_t WorstCaseTcpSendBufferSize    = AlignMss(std::max(DefaultTcpInitialSendBufferSize, DefaultTcpAutoSendBufferSizeMax));
+                constexpr size_t WorstCaseTcpReceiveBufferSize = AlignMss(std::max(DefaultTcpInitialReceiveBufferSize, DefaultTcpAutoReceiveBufferSizeMax));
+
+                return util::AlignUp(WorstCaseTcpSendBufferSize * DefaultSocketBufferEfficiency + WorstCaseTcpReceiveBufferSize * DefaultSocketBufferEfficiency, os::MemoryPageSize);
+            }();
+
+            static constexpr size_t PerUdpSocketWorstCaseMemoryPoolSize = [] {
+                constexpr size_t WorstCaseUdpSendBufferSize    = AlignMss(DefaultUdpSendBufferSize);
+                constexpr size_t WorstCaseUdpReceiveBufferSize = AlignMss(DefaultUdpReceiveBufferSize);
+
+                return util::AlignUp(WorstCaseUdpSendBufferSize * DefaultSocketBufferEfficiency + WorstCaseUdpReceiveBufferSize * DefaultSocketBufferEfficiency, os::MemoryPageSize);
+            }();
+        public:
+            constexpr SystemConfigLightDefault(void *mp, size_t mp_sz, size_t ap, int c=DefaultConcurrency)
+                : Config(mp, mp_sz, ap,
+                         DefaultTcpInitialSendBufferSize, DefaultTcpInitialReceiveBufferSize,
+                         DefaultTcpAutoSendBufferSizeMax, DefaultTcpAutoReceiveBufferSizeMax,
+                         DefaultUdpSendBufferSize, DefaultUdpReceiveBufferSize,
+                         DefaultSocketBufferEfficiency, c)
+            {
+                /* Mark as system. */
+                m_system = true;
+            }
+    };
+
 }

libraries/libstratosphere/include/stratosphere/spl/impl/spl_api_impl.hpp

@@ -51,7 +51,7 @@ namespace ams::spl::impl {
 
     Result AllocateAesKeySlot(s32 *out_keyslot);
     Result DeallocateAesKeySlot(s32 keyslot);
-    Result TestAesKeySlot(s32 *out_index, s32 keyslot);
+    Result TestAesKeySlot(s32 *out_index, bool *out_virtual, s32 keyslot);
 
     os::SystemEvent *GetAesKeySlotAvailableEvent();
 

libraries/libstratosphere/source/boot2/boot2_api.cpp

@@ -188,6 +188,12 @@ namespace ams::boot2 {
             return enable_htc != 0;
         }
 
+        bool IsStandaloneGdbstubEnabled() {
+            u8 enable_gdbstub = 0;
+            settings::fwdbg::GetSettingsItemValue(std::addressof(enable_gdbstub), sizeof(enable_gdbstub), "atmosphere", "enable_standalone_gdbstub");
+            return enable_gdbstub != 0;
+        }
+
         bool IsAtmosphereLogManagerEnabled() {
             /* If htc is enabled, ams log manager is enabled. */
             if (IsHtcEnabled()) {
@@ -403,6 +409,9 @@ namespace ams::boot2 {
             LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::Htc,      ncm::StorageId::None), 0);
             LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::Cs,       ncm::StorageId::None), 0);
             LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::DmntGen2, ncm::StorageId::None), 0);
+        } else if (IsStandaloneGdbstubEnabled()) {
+            LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::DmntGen2, ncm::StorageId::None), 0);
+            LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::Tma,  ncm::StorageId::BuiltInSystem), 0);
         } else {
             LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::Dmnt, ncm::StorageId::None), 0);
             LaunchProgram(nullptr, ncm::ProgramLocation::Make(ncm::SystemProgramId::Tma,  ncm::StorageId::BuiltInSystem), 0);

libraries/libstratosphere/source/fs/fs_save_data_management.cpp

@@ -89,9 +89,8 @@ namespace ams::fs {
     Result DeleteSystemSaveData(SaveDataSpaceId space_id, SystemSaveDataId id, UserId user_id) {
         const auto attribute = SaveDataAttribute::Make(ncm::InvalidProgramId, SaveDataType::System, user_id, id);
 
-        /* TODO: Libnx binding for DeleteSaveDataFileSystemBySaveDataAttribute */
-        AMS_UNUSED(space_id, attribute);
-        AMS_ABORT();
+        static_assert(sizeof(attribute) == sizeof(::FsSaveDataAttribute));
+        return fsDeleteSaveDataFileSystemBySaveDataAttribute(static_cast<::FsSaveDataSpaceId>(space_id), reinterpret_cast<const ::FsSaveDataAttribute *>(std::addressof(attribute)));
     }
 
     Result GetSaveDataFlags(u32 *out, SaveDataId id) {

libraries/libstratosphere/source/init/init_libnx_shim.os.horizon.cpp

@@ -20,6 +20,8 @@ extern "C" {
     constinit u32 __nx_fs_num_sessions = 1;
     constinit u32 __nx_applet_type = AppletType_None;
 
+    constinit bool __nx_fsdev_support_cwd = false;
+
     extern int __system_argc;
     extern char** __system_argv;
 

libraries/libstratosphere/source/os/impl/os_thread_manager_impl.os.horizon.cpp

@@ -52,6 +52,26 @@ namespace ams::os::impl {
         /* Get the thread impl object from libnx. */
         ThreadImpl *thread_impl = ::threadGetSelf();
 
+        /* Hack around libnx's main thread, to ensure stratosphere thread type consistency. */
+        {
+            auto *tlr = reinterpret_cast<uintptr_t *>(svc::GetThreadLocalRegion());
+            for (size_t i = sizeof(svc::ThreadLocalRegion) / sizeof(uintptr_t); i > 0; --i) {
+                if (auto *candidate = reinterpret_cast<ThreadImpl *>(tlr[i - 1]); candidate == thread_impl) {
+                    ThreadImpl *embedded_thread = std::addressof(main_thread->thread_impl_storage);
+
+                    *embedded_thread = *thread_impl;
+
+                    if (embedded_thread->next) {
+                        embedded_thread->next->prev_next = std::addressof(embedded_thread->next);
+                    }
+
+                    thread_impl = embedded_thread;
+                    tlr[i-1]    = reinterpret_cast<uintptr_t>(thread_impl);
+                    break;
+                }
+            }
+        }
+
         /* Get the thread priority. */
         s32 horizon_priority;
         R_ABORT_UNLESS(svc::GetThreadPriority(std::addressof(horizon_priority), thread_impl->handle));

libraries/libstratosphere/source/osdbg/impl/osdbg_thread_local_region.os.horizon.hpp

@@ -54,7 +54,7 @@ namespace ams::osdbg::impl {
     static_assert(AMS_OFFSETOF(ThreadLocalRegionIlp32, tls) == 0x1C0);
 
     struct LibnxThreadVars {
-        static constexpr u32 Magic = util::FourCC<'!','T','V','$'>::Code;
+        static constexpr u32 Magic = util::ReverseFourCC<'!','T','V','$'>::Code;
 
         u32 magic;
         ::Handle handle;
@@ -69,11 +69,11 @@ namespace ams::osdbg::impl {
         volatile u16 disable_counter;
         volatile u16 interrupt_flag;
         u32 reserved0;
-        u64 tls[(0x1E0 - 0x108) / sizeof(u64)];
+        u64 tls[(0x200 - sizeof(LibnxThreadVars) - 0x108) / sizeof(u64)];
         LibnxThreadVars thread_vars;
     };
     static_assert(sizeof(ThreadLocalRegionLibnx) == sizeof(svc::ThreadLocalRegion));
-    static_assert(AMS_OFFSETOF(ThreadLocalRegionLibnx, thread_vars) == 0x1E0);
+    static_assert(AMS_OFFSETOF(ThreadLocalRegionLibnx, thread_vars) == 0x200 - sizeof(LibnxThreadVars));
 
     struct LibnxThreadEntryArgs {
         u64 t;

libraries/libstratosphere/source/osdbg/osdbg_thread.cpp

@@ -50,9 +50,9 @@ namespace ams::osdbg {
         } else {
             /* Special-case libnx threads. */
             if (thread_info->_thread_type_type == ThreadTypeType_Libnx) {
-                util::TSNPrintf(dst, os::ThreadNameLengthMax, "libnx Thread_0x%p", reinterpret_cast<void *>(thread_info->_thread_type));
+                util::TSNPrintf(dst, os::ThreadNameLengthMax, "libnx Thread_0x%010lx", reinterpret_cast<uintptr_t>(thread_info->_thread_type));
             } else {
-                util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_0x%p", reinterpret_cast<void *>(thread_info->_thread_type));
+                util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_0x%010lx", reinterpret_cast<uintptr_t>(thread_info->_thread_type));
             }
 
             return ResultSuccess();

libraries/libstratosphere/source/socket/impl/socket_api.hpp

@@ -41,6 +41,7 @@ namespace ams::socket::impl {
 
     s32 Shutdown(s32 desc, ShutdownMethod how);
 
+    s32 Socket(Family domain, Type type, Protocol protocol);
     s32 SocketExempt(Family domain, Type type, Protocol protocol);
 
     s32 Accept(s32 desc, SockAddr *out_address, SockLenT *out_addr_len);

libraries/libstratosphere/source/socket/impl/socket_api.os.horizon.cpp

@@ -206,6 +206,8 @@ namespace ams::socket::impl {
 
             /* TODO: socket::resolver::EnableResolverCalls()? Not necessary in our case (htc), but consider calling it. */
 
+            g_initialized = true;
+
             return ResultSuccess();
         }
 
@@ -422,6 +424,22 @@ namespace ams::socket::impl {
         return result;
     }
 
+    s32 Socket(Family domain, Type type, Protocol protocol) {
+        /* Check pre-conditions. */
+        AMS_ABORT_UNLESS(IsInitialized());
+
+        /* Perform the call. */
+        Errno error = Errno::ESuccess;
+        int result  = ::bsdSocket(static_cast<int>(domain), static_cast<int>(type), static_cast<int>(protocol));
+        TranslateResultToBsdError(error, result);
+
+        if (result < 0) {
+            socket::impl::SetLastError(error);
+        }
+
+        return result;
+    }
+
     s32 SocketExempt(Family domain, Type type, Protocol protocol) {
         /* Check pre-conditions. */
         AMS_ABORT_UNLESS(IsInitialized());

libraries/libstratosphere/source/socket/socket_api.cpp

@@ -74,6 +74,10 @@ namespace ams::socket {
         return impl::Shutdown(desc, how);
     }
 
+    s32 Socket(Family domain, Type type, Protocol protocol) {
+        return impl::Socket(domain, type, protocol);
+    }
+
     s32 SocketExempt(Family domain, Type type, Protocol protocol) {
         return impl::SocketExempt(domain, type, protocol);
     }

libraries/libstratosphere/source/spl/impl/spl_api_impl.cpp

@@ -729,9 +729,10 @@ namespace ams::spl::impl {
         return ResultSuccess();
     }
 
-    Result TestAesKeySlot(s32 *out_index, s32 keyslot) {
+    Result TestAesKeySlot(s32 *out_index, bool *out_virtual, s32 keyslot) {
         if (g_is_physical_keyslot_allowed && IsPhysicalAesKeySlot(keyslot)) {
-            *out_index = keyslot;
+            *out_index   = keyslot;
+            *out_virtual = false;
             return ResultSuccess();
         }
 
@@ -740,7 +741,8 @@ namespace ams::spl::impl {
         const s32 index = GetVirtualAesKeySlotIndex(keyslot);
         R_UNLESS(g_is_aes_keyslot_allocated[index], spl::ResultInvalidKeySlot());
 
-        *out_index = index;
+        *out_index   = index;
+        *out_virtual = true;
         return ResultSuccess();
     }
 

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_i_service_for_bg_agent.hpp

@@ -18,9 +18,9 @@
 #include "sprofile_srv_i_profile_importer.hpp"
 
 #define AMS_SPROFILE_I_SPROFILE_SERVICE_FOR_BG_AGENT_INTERFACE_INFO(C, H) \
-    AMS_SF_METHOD_INFO(C, H, 100,  Result, OpenProfileImporter,  (sf::Out<sf::SharedPointer<::ams::sprofile::IProfileImporter>> out),                                                                                    (out)) \
-    AMS_SF_METHOD_INFO(C, H, 200,  Result, GetMetadataEntryData, (sf::Out<u32> out_count, const sf::OutArray<sprofile::srv::ProfileMetadataEntryData> &out, const sprofile::srv::ProfileMetadataForImportMetadata &arg), (out_count, out, arg)) \
-    AMS_SF_METHOD_INFO(C, H, 201,  Result, IsUpdateNeeded,       (sf::Out<bool> out, sprofile::Identifier revision_key),                                                                                                 (out, revision_key)) \
-    AMS_SF_METHOD_INFO(C, H, 2000, Result, Reset,                (),                                                                                                                                                     ())
+    AMS_SF_METHOD_INFO(C, H, 100,  Result, OpenProfileImporter,      (sf::Out<sf::SharedPointer<::ams::sprofile::IProfileImporter>> out),                                                                      (out)) \
+    AMS_SF_METHOD_INFO(C, H, 200,  Result, GetImportableProfileUrls, (sf::Out<u32> out_count, const sf::OutArray<sprofile::srv::ProfileUrl> &out, const sprofile::srv::ProfileMetadataForImportMetadata &arg), (out_count, out, arg)) \
+    AMS_SF_METHOD_INFO(C, H, 201,  Result, IsUpdateNeeded,           (sf::Out<bool> out, sprofile::Identifier revision_key),                                                                                   (out, revision_key)) \
+    AMS_SF_METHOD_INFO(C, H, 2000, Result, Reset,                    (),                                                                                                                                       ())
 
 AMS_SF_DEFINE_INTERFACE(ams::sprofile, ISprofileServiceForBgAgent, AMS_SPROFILE_I_SPROFILE_SERVICE_FOR_BG_AGENT_INTERFACE_INFO)

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_profile_importer_impl.hpp

@@ -26,6 +26,10 @@ namespace ams::sprofile::srv {
             ProfileManager *m_manager;
         public:
             ProfileImporterImpl(ProfileManager *manager) : m_manager(manager) { /* ... */ }
+
+            ~ProfileImporterImpl() {
+                m_manager->CloseProfileImporter();
+            }
         public:
             Result ImportProfile(const sprofile::srv::ProfileDataForImportData &import);
             Result Commit();

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_profile_manager.cpp

@@ -151,6 +151,16 @@ namespace ams::sprofile::srv {
         return ResultSuccess();
     }
 
+    void ProfileManager::CloseProfileImporter() {
+        /* Acquire locks. */
+        std::scoped_lock lk1(m_profile_importer_mutex);
+        std::scoped_lock lk2(m_general_mutex);
+        std::scoped_lock lk3(m_fs_mutex);
+
+        /* Close our importer. */
+        m_profile_importer = util::nullopt;
+    }
+
     Result ProfileManager::ImportProfile(const sprofile::srv::ProfileDataForImportData &import) {
         /* Acquire locks. */
         std::scoped_lock lk1(m_profile_importer_mutex);
@@ -165,6 +175,8 @@ namespace ams::sprofile::srv {
         /* Check that the metadata we're importing has a valid hash. */
         {
             crypto::Md5Generator md5;
+            md5.Initialize();
+
             md5.Update(std::addressof(import.header), sizeof(import.header));
             md5.Update(std::addressof(import.data), sizeof(import.data) - sizeof(import.data.entries[0]) * (util::size(import.data.entries) - std::min<size_t>(import.data.num_entries, util::size(import.data.entries))));
 
@@ -258,9 +270,11 @@ namespace ams::sprofile::srv {
         /* Check that the metadata we're importing has a valid hash. */
         {
             crypto::Md5Generator md5;
+            md5.Initialize();
+
             md5.Update(std::addressof(import.header), sizeof(import.header));
             md5.Update(std::addressof(import.metadata), sizeof(import.metadata));
-            md5.Update(std::addressof(import.entries), sizeof(import.entries[0]) * std::min<size_t>(import.metadata.num_entries, util::size(import.metadata.entries)));
+            md5.Update(std::addressof(import.profile_urls), sizeof(import.profile_urls[0]) * std::min<size_t>(import.metadata.num_entries, util::size(import.metadata.entries)));
 
             u8 hash[crypto::Md5Generator::HashSize];
             md5.GetHash(hash, sizeof(hash));

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_profile_manager.hpp

@@ -50,6 +50,8 @@ namespace ams::sprofile::srv {
             Result ResetSaveData();
 
             Result OpenProfileImporter();
+            void CloseProfileImporter();
+
             Result ImportProfile(const sprofile::srv::ProfileDataForImportData &data);
             Result Commit();
             Result ImportMetadata(const sprofile::srv::ProfileMetadataForImportMetadata &data);

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_service_for_bg_agent.cpp

@@ -34,7 +34,7 @@ namespace ams::sprofile::srv {
         return ResultSuccess();
     }
 
-    Result ServiceForBgAgent::GetMetadataEntryData(sf::Out<u32> out_count, const sf::OutArray<sprofile::srv::ProfileMetadataEntryData> &out, const sprofile::srv::ProfileMetadataForImportMetadata &arg) {
+    Result ServiceForBgAgent::GetImportableProfileUrls(sf::Out<u32> out_count, const sf::OutArray<sprofile::srv::ProfileUrl> &out, const sprofile::srv::ProfileMetadataForImportMetadata &arg) {
         /* Check size. */
         R_UNLESS(out.GetSize() >= arg.metadata.num_entries, sprofile::ResultInvalidArgument());
 
@@ -42,25 +42,31 @@ namespace ams::sprofile::srv {
         sprofile::srv::ProfileMetadata primary_metadata;
         R_TRY_CATCH(m_profile_manager->LoadPrimaryMetadata(std::addressof(primary_metadata))) {
             R_CATCH(fs::ResultPathNotFound) {
-                /* If we have no metadata, we can't get any entries. */
-                *out_count = 0;
-                return ResultSuccess();
+                /* It's okay if we have no primary metadata -- this means that all profiles are importable. */
+                primary_metadata.num_entries = 0;
             }
         } R_END_TRY_CATCH;
 
-        /* Copy matching entries. */
+        /* We want to return the set of profiles that can be imported, which is just the profiles we don't already have. */
         u32 count = 0;
         for (u32 i = 0; i < arg.metadata.num_entries; ++i) {
             const auto &arg_entry = arg.metadata.entries[i];
 
+            /* Check if we have the entry. */
+            bool have_entry = false;
             for (u32 j = 0; j < primary_metadata.num_entries; ++j) {
                 const auto &pri_entry = primary_metadata.entries[j];
 
                 if (pri_entry.identifier_0 == arg_entry.identifier_0 && pri_entry.identifier_1 == arg_entry.identifier_1) {
-                    out[count++] = arg.entries[i];
+                    have_entry = true;
                     break;
                 }
             }
+
+            /* If we don't already have the entry, it's importable -- copy it out. */
+            if (!have_entry) {
+                out[count++] = arg.profile_urls[i];
+            }
         }
 
         /* Set output count. */
@@ -68,6 +74,7 @@ namespace ams::sprofile::srv {
         return ResultSuccess();
 
     }
+
     Result ServiceForBgAgent::IsUpdateNeeded(sf::Out<bool> out, Identifier revision_key) {
         /* Load primary metadata. */
         bool loaded_metadata = true;

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_service_for_bg_agent.hpp

@@ -29,7 +29,7 @@ namespace ams::sprofile::srv {
             constexpr ServiceForBgAgent(MemoryResource *mr, ProfileManager *pm) : m_memory_resource(mr), m_profile_manager(pm) { /* ... */ }
         public:
             Result OpenProfileImporter(sf::Out<sf::SharedPointer<::ams::sprofile::IProfileImporter>> out);
-            Result GetMetadataEntryData(sf::Out<u32> out_count, const sf::OutArray<sprofile::srv::ProfileMetadataEntryData> &out, const sprofile::srv::ProfileMetadataForImportMetadata &arg);
+            Result GetImportableProfileUrls(sf::Out<u32> out_count, const sf::OutArray<sprofile::srv::ProfileUrl> &out, const sprofile::srv::ProfileMetadataForImportMetadata &arg);
             Result IsUpdateNeeded(sf::Out<bool> out, Identifier revision_key);
             Result Reset();
     };

libraries/libstratosphere/source/sprofile/srv/sprofile_srv_types.hpp

@@ -46,6 +46,10 @@ namespace ams::sprofile::srv {
     static_assert(util::is_pod<ProfileDataEntry>::value);
     static_assert(sizeof(ProfileDataEntry) == 0x10);
 
+    static_assert(AMS_OFFSETOF(ProfileDataEntry, key)       == 0x00);
+    static_assert(AMS_OFFSETOF(ProfileDataEntry, type)      == 0x07);
+    static_assert(AMS_OFFSETOF(ProfileDataEntry, value_s64) == 0x08);
+
     struct ProfileData {
         u32 num_entries;
         u8 unk_04[0x0C];
@@ -55,6 +59,11 @@ namespace ams::sprofile::srv {
     static_assert(util::is_pod<ProfileData>::value);
     static_assert(sizeof(ProfileData) == 0x4000);
 
+    static_assert(AMS_OFFSETOF(ProfileData, num_entries) == 0x00);
+    static_assert(AMS_OFFSETOF(ProfileData, unk_04)      == 0x04);
+    static_assert(AMS_OFFSETOF(ProfileData, unk_10)      == 0x10);
+    static_assert(AMS_OFFSETOF(ProfileData, entries)     == 0x30);
+
     struct ServiceProfile {
         Identifier name;
         ProfileData data;
@@ -62,6 +71,9 @@ namespace ams::sprofile::srv {
     static_assert(util::is_pod<ServiceProfile>::value);
     static_assert(sizeof(ServiceProfile) == 0x4008);
 
+    static_assert(AMS_OFFSETOF(ServiceProfile, name)   == 0x00);
+    static_assert(AMS_OFFSETOF(ServiceProfile, data)   == 0x08);
+
     struct ProfileDataForImportData : public sf::LargeData, public sf::PrefersMapAliasTransferMode {
         struct {
             Identifier identifier_0;
@@ -77,6 +89,11 @@ namespace ams::sprofile::srv {
     static_assert(util::is_pod<ProfileDataForImportData>::value);
     static_assert(sizeof(ProfileDataForImportData) == 0x4400);
 
+    static_assert(AMS_OFFSETOF(ProfileDataForImportData, header)   == 0x00);
+    static_assert(AMS_OFFSETOF(ProfileDataForImportData, hash)     == 0x30);
+    static_assert(AMS_OFFSETOF(ProfileDataForImportData, data)     == 0x40);
+    static_assert(AMS_OFFSETOF(ProfileDataForImportData, unk_4040) == 0x4040);
+
     struct ProfileMetadataEntry {
         Identifier identifier_0;
         Identifier identifier_1;
@@ -85,22 +102,34 @@ namespace ams::sprofile::srv {
     static_assert(util::is_pod<ProfileMetadataEntry>::value);
     static_assert(sizeof(ProfileMetadataEntry) == 0x40);
 
-    struct ProfileMetadataEntryData : public sf::PrefersMapAliasTransferMode {
-        u8 unk[0x100];
+    static_assert(AMS_OFFSETOF(ProfileMetadataEntry, identifier_0) == 0x00);
+    static_assert(AMS_OFFSETOF(ProfileMetadataEntry, identifier_1) == 0x07);
+    static_assert(AMS_OFFSETOF(ProfileMetadataEntry, unk_0E)       == 0x0E);
+
+    struct ProfileUrl : public sf::PrefersMapAliasTransferMode {
+        char url[0x100];
     };
-    static_assert(util::is_pod<ProfileMetadataEntryData>::value);
-    static_assert(sizeof(ProfileMetadataEntryData) == 0x100);
+    static_assert(util::is_pod<ProfileUrl>::value);
+    static_assert(sizeof(ProfileUrl) == 0x100);
 
     struct ProfileMetadata {
         u32 num_entries;
         u32 unk_04;
         Identifier revision_key;
+        u8 unk_0F[0x1];
         u8 unk_10[0x30];
         ProfileMetadataEntry entries[50];
     };
     static_assert(util::is_pod<ProfileMetadata>::value);
     static_assert(sizeof(ProfileMetadata) == 0xCC0);
 
+    static_assert(AMS_OFFSETOF(ProfileMetadata, num_entries)  == 0x00);
+    static_assert(AMS_OFFSETOF(ProfileMetadata, unk_04)       == 0x04);
+    static_assert(AMS_OFFSETOF(ProfileMetadata, revision_key) == 0x08);
+    static_assert(AMS_OFFSETOF(ProfileMetadata, unk_0F)       == 0x0F);
+    static_assert(AMS_OFFSETOF(ProfileMetadata, unk_10)       == 0x10);
+    static_assert(AMS_OFFSETOF(ProfileMetadata, entries)      == 0x40);
+
     struct ProfileMetadataForImportMetadata : public sf::LargeData, public sf::PrefersMapAliasTransferMode {
         struct {
             u32 version;
@@ -108,10 +137,16 @@ namespace ams::sprofile::srv {
         } header;
         u8 hash[crypto::Md5Generator::HashSize];
         ProfileMetadata metadata;
-        ProfileMetadataEntryData entries[50];
-        u8 unk[0x8000 - 0x3EF0];
+        ProfileUrl profile_urls[50];
+        u8 unk_3EF0[0x8000 - 0x3EF0];
     };
     static_assert(util::is_pod<ProfileMetadataForImportMetadata>::value);
     static_assert(sizeof(ProfileMetadataForImportMetadata) == 0x8000);
 
+    static_assert(AMS_OFFSETOF(ProfileMetadataForImportMetadata, header)       == 0x00);
+    static_assert(AMS_OFFSETOF(ProfileMetadataForImportMetadata, hash)         == 0x20);
+    static_assert(AMS_OFFSETOF(ProfileMetadataForImportMetadata, metadata)     == 0x30);
+    static_assert(AMS_OFFSETOF(ProfileMetadataForImportMetadata, profile_urls) == 0xCF0);
+    static_assert(AMS_OFFSETOF(ProfileMetadataForImportMetadata, unk_3EF0)     == 0x3EF0);
+
 }

libraries/libvapours/include/vapours/ams/ams_api_version.h

@@ -17,7 +17,7 @@
 
 #define ATMOSPHERE_RELEASE_VERSION_MAJOR    1
 #define ATMOSPHERE_RELEASE_VERSION_MINOR    2
-#define ATMOSPHERE_RELEASE_VERSION_MICRO    1
+#define ATMOSPHERE_RELEASE_VERSION_MICRO    2
 
 #define ATMOSPHERE_RELEASE_VERSION ATMOSPHERE_RELEASE_VERSION_MAJOR, ATMOSPHERE_RELEASE_VERSION_MINOR, ATMOSPHERE_RELEASE_VERSION_MICRO
 

libraries/libvapours/include/vapours/svc/svc_types_common.hpp

@@ -251,7 +251,7 @@ namespace ams::svc {
     /* Thread types. */
     using ThreadFunc = ams::svc::Address;
 
-#if defined(ATMOSPHERE_ARCH_ARM64)
+#if defined(ATMOSPHERE_ARCH_ARM_V8A)
 
     struct ThreadContext {
         u64  r[29];
@@ -268,7 +268,7 @@ namespace ams::svc {
     };
     static_assert(sizeof(ThreadContext) == 0x320);
 
-#elif defined(ATMOSPHERE_ARCH_ARM)
+#elif defined(ATMOSPHERE_ARCH_ARM_V7A)
 
     struct ThreadContext {
         u32 r[13];
@@ -282,9 +282,14 @@ namespace ams::svc {
         u32 fpexc;
         u32 tpidr;
     };
+    static_assert(sizeof(ThreadContext) == 0x158);
 
 #else
+
+    #if !defined(ATMOSPHERE_IS_EXOSPHERE)
     #error "Unknown Architecture for ams::svc::ThreadContext"
+    #endif
+
 #endif
 
     enum ThreadSuspend : u32 {

libraries/libvapours/source/crypto/impl/crypto_md5_impl.cpp

@@ -149,7 +149,7 @@ namespace ams::crypto::impl {
 
         /* Copy in any leftover data. */
         if (const auto left = size % BlockSize; left > 0) {
-            std::memcpy(m_y, cur_block, size);
+            std::memcpy(m_y, cur_block, left);
         }
 
     }

mesosphere/kernel/source/arch/arm64/init/kern_init_core.cpp

@@ -49,10 +49,9 @@ namespace ams::kern::init {
         constexpr PageTableEntry KernelRwDataUncachedAttribute(PageTableEntry::Permission_KernelRW, PageTableEntry::PageAttribute_NormalMemoryNotCacheable, PageTableEntry::Shareable_InnerShareable, PageTableEntry::MappingFlag_Mapped);
 
         void StoreDataCache(const void *addr, size_t size) {
-            uintptr_t start = util::AlignDown(reinterpret_cast<uintptr_t>(addr), cpu::DataCacheLineSize);
-            uintptr_t end   = reinterpret_cast<uintptr_t>(addr) + size;
-            for (uintptr_t cur = start; cur < end; cur += cpu::DataCacheLineSize) {
-                __asm__ __volatile__("dc cvac, %[cur]" :: [cur]"r"(cur) : "memory");
+            const uintptr_t start = util::AlignDown(reinterpret_cast<uintptr_t>(addr), cpu::DataCacheLineSize);
+            for (size_t stored = 0; stored < size; stored += cpu::DataCacheLineSize) {
+                __asm__ __volatile__("dc cvac, %[cur]" :: [cur]"r"(start + stored) : "memory");
             }
             cpu::DataSynchronizationBarrier();
         }
@@ -594,11 +593,13 @@ namespace ams::kern::init {
 
         switch (num_watchpoints) {
             FOR_I_IN_15_TO_1(MESOSPHERE_INITIALIZE_WATCHPOINT_CASE, 0)
+            case 0:
+                cpu::SetDbgWcr0El1(0);
+                cpu::SetDbgWvr0El1(0);
+            [[fallthrough]];
             default:
                 break;
         }
-        cpu::SetDbgWcr0El1(0);
-        cpu::SetDbgWvr0El1(0);
 
         switch (num_breakpoints) {
             FOR_I_IN_15_TO_1(MESOSPHERE_INITIALIZE_BREAKPOINT_CASE, 0)

mesosphere/kernel/source/arch/arm64/kern_exception_handlers_asm.s

@@ -376,7 +376,7 @@ _ZN3ams4kern4arch5arm6430EL1SynchronousExceptionHandlerEv:
     stp     x26, x27, [sp, #(EXCEPTION_CONTEXT_X26_X27)]
     stp     x28, x29, [sp, #(EXCEPTION_CONTEXT_X28_X29)]
 
-    mrs     x20, sp_el0
+    ldr     x20, [sp]
     mrs     x21, elr_el1
     mrs     x22, spsr_el1
     mrs     x23, tpidr_el0
@@ -529,7 +529,7 @@ _ZN3ams4kern4arch5arm6421EL1SystemErrorHandlerEv:
     stp     x26, x27, [sp, #(EXCEPTION_CONTEXT_X26_X27)]
     stp     x28, x29, [sp, #(EXCEPTION_CONTEXT_X28_X29)]
 
-    mrs     x20, sp_el0
+    ldr     x20, [sp]
     mrs     x21, elr_el1
     mrs     x22, spsr_el1
     mrs     x23, tpidr_el0

mesosphere/kernel/source/arch/arm64/kern_k_scheduler_asm.s

@@ -183,9 +183,7 @@ _ZN3ams4kern10KScheduler12ScheduleImplEv:
 
     /* Get the highest priority thread's context, and save it. */
     /* ams::kern::KThread::GetContextForSchedulerLoop() */
-    mov    x0, x21
-    bl     _ZN3ams4kern7KThread26GetContextForSchedulerLoopEv
-    mov    x22, x0
+    add    x22, x21, #(THREAD_THREAD_CONTEXT)
 
     /* Prepare to try to acquire the context lock. */
     add    x1, x22, #(THREAD_CONTEXT_LOCKED)
@@ -227,26 +225,7 @@ _ZN3ams4kern10KScheduler12ScheduleImplEv:
     mov    x0, x22
     RESTORE_THREAD_CONTEXT(x0, x1, x2, 9f)
 
-9:  /* Configure single-step, if we should. */
-    #if defined(MESOSPHERE_ENABLE_HARDWARE_SINGLE_STEP)
-
-    /* Get a reference to the new thread's stack parameters. */
-    add    x2, sp, #0x1000
-    and    x2, x2, #~(0x1000-1)
-
-    /* Read the single-step flag. */
-    ldurb  w2, [x2, #-(THREAD_STACK_PARAMETERS_SIZE - THREAD_STACK_PARAMETERS_IS_SINGLE_STEP)]
-
-    /* Update the single-step bit in mdscr_el1. */
-    mrs    x1, mdscr_el1
-    bic    x1, x1, #1
-    orr    x1, x1, x2
-    msr    mdscr_el1, x1
-
-    isb
-    #endif
-
-    /* We're done restoring the thread context, and can return safely. */
+9:  /* We're done restoring the thread context, and can return safely. */
     ret
 
 10: /* Our switch failed. */

stratosphere/ams_mitm/source/set_mitm/settings_sd_kvs.cpp

@@ -378,6 +378,12 @@ namespace ams::settings::fwdbg {
             /* 0 = Disabled, 1 = Enabled */
             R_ABORT_UNLESS(ParseSettingsItemValue("atmosphere", "enable_htc", "u8!0x0"));
 
+            /* Controls whether atmosphere's dmnt.gen2 gdbstub should run as a standalone via sockets. */
+            /* Note that this setting is ignored (and treated as 0) when htc is enabled. */
+            /* Note that this setting may disappear in the future. */
+            /* 0 = Disabled, 1 = Enabled */
+            R_ABORT_UNLESS(ParseSettingsItemValue("atmosphere", "enable_standalone_gdbstub", "u8!0x0"));
+
             /* Controls whether atmosphere's log manager is enabled. */
             /* Note that this setting is ignored (and treated as 1) when htc is enabled. */
             /* 0 = Disabled, 1 = Enabled */

stratosphere/creport/source/creport_crash_report.cpp

@@ -101,11 +101,9 @@ namespace ams::creport {
         m_has_extra_info = has_extra_info;
 
         if (this->OpenProcess(process_id)) {
-            ON_SCOPE_EXIT { this->Close(); };
-
             /* Parse info from the crashed process. */
             this->ProcessExceptions();
-            m_module_list->FindModulesFromThreadInfo(m_debug_handle, m_crashed_thread);
+            m_module_list->FindModulesFromThreadInfo(m_debug_handle, m_crashed_thread, this->Is64Bit());
             m_thread_list->ReadFromProcess(m_debug_handle, m_thread_tls_map, this->Is64Bit());
 
             /* Associate module list to threads. */
@@ -120,7 +118,7 @@ namespace ams::creport {
             /* Nintendo's creport finds extra modules by looking at all threads if application, */
             /* but there's no reason for us not to always go looking. */
             for (size_t i = 0; i < m_thread_list->GetThreadCount(); i++) {
-                m_module_list->FindModulesFromThreadInfo(m_debug_handle, m_thread_list->GetThreadInfo(i));
+                m_module_list->FindModulesFromThreadInfo(m_debug_handle, m_thread_list->GetThreadInfo(i), this->Is64Bit());
             }
 
             /* Cache the module base address to send to fatal. */
@@ -324,6 +322,11 @@ namespace ams::creport {
                 }
             }
 
+            /* If we're open, we need to close here. */
+            if (this->IsOpen()) {
+                this->Close();
+            }
+
             /* Finalize our heap. */
             std::destroy_at(m_module_list);
             std::destroy_at(m_thread_list);
@@ -358,7 +361,7 @@ namespace ams::creport {
     }
 
     void CrashReport::SaveToFile(ScopedFile &file) {
-        file.WriteFormat("Atmosphère Crash Report (v1.6):\n");
+        file.WriteFormat("Atmosphère Crash Report (v1.7):\n");
 
         file.WriteFormat("Result:                          0x%X (2%03d-%04d)\n\n", m_result.GetValue(), m_result.GetModule(), m_result.GetDescription());
 

stratosphere/creport/source/creport_main.cpp

@@ -103,13 +103,17 @@ namespace ams {
         g_crash_report.Initialize();
 
         /* Try to debug the crashed process. */
-        g_crash_report.BuildReport(crashed_pid, has_extra_info);
-        if (!g_crash_report.IsComplete()) {
-            return;
-        }
+        {
+            g_crash_report.BuildReport(crashed_pid, has_extra_info);
+            ON_SCOPE_EXIT { if (g_crash_report.IsOpen()) { g_crash_report.Close(); } };
 
-        /* Save report to file. */
-        g_crash_report.SaveReport(enable_screenshot);
+            if (!g_crash_report.IsComplete()) {
+                return;
+            }
+
+            /* Save report to file. */
+            g_crash_report.SaveReport(enable_screenshot);
+        }
 
         /* Try to terminate the process, if we should. */
         const auto fw_ver = hos::GetVersion();

stratosphere/creport/source/creport_modules.cpp

@@ -27,7 +27,7 @@ namespace ams::creport {
 
         struct ModulePath {
             u32  zero;
-            u32  path_length;
+            s32  path_length;
             char path[ModulePathLengthMax];
         };
         static_assert(sizeof(ModulePath) == 0x208, "ModulePath definition!");
@@ -58,26 +58,26 @@ namespace ams::creport {
         }
     }
 
-    void ModuleList::FindModulesFromThreadInfo(os::NativeHandle debug_handle, const ThreadInfo &thread) {
+    void ModuleList::FindModulesFromThreadInfo(os::NativeHandle debug_handle, const ThreadInfo &thread, bool is_64_bit) {
         /* Set the debug handle, for access in other member functions. */
         m_debug_handle = debug_handle;
 
         /* Try to add the thread's PC. */
-        this->TryAddModule(thread.GetPC());
+        this->TryAddModule(thread.GetPC(), is_64_bit);
 
         /* Try to add the thread's LR. */
-        this->TryAddModule(thread.GetLR());
+        this->TryAddModule(thread.GetLR(), is_64_bit);
 
         /* Try to add all the addresses in the thread's stacktrace. */
         for (size_t i = 0; i < thread.GetStackTraceSize(); i++) {
-            this->TryAddModule(thread.GetStackTrace(i));
+            this->TryAddModule(thread.GetStackTrace(i), is_64_bit);
         }
     }
 
-    void ModuleList::TryAddModule(uintptr_t guess) {
+    void ModuleList::TryAddModule(uintptr_t guess, bool is_64_bit) {
         /* Try to locate module from guess. */
         uintptr_t base_address = 0;
-        if (!this->TryFindModule(std::addressof(base_address), guess)) {
+        if (!this->TryFindModule(std::addressof(base_address), guess, is_64_bit)) {
             return;
         }
 
@@ -105,9 +105,18 @@ namespace ams::creport {
                 module.end_address   = mi.base_address + mi.size;
                 GetModuleName(module.name, module.start_address, module.end_address);
                 GetModuleId(module.module_id, module.end_address);
-                /* Some homebrew won't have a name. Add a fake one for readability. */
+
+                /* Default to no symbol table. */
+                module.has_sym_table = false;
+
                 if (std::strcmp(module.name, "") == 0) {
+                    /* Some homebrew won't have a name. Add a fake one for readability. */
                     util::SNPrintf(module.name, sizeof(module.name), "[%02x%02x%02x%02x]", module.module_id[0], module.module_id[1], module.module_id[2], module.module_id[3]);
+                } else {
+                    /* The module has a name, and so might have a symbol table. Try to add it, if it does. */
+                    if (is_64_bit) {
+                        DetectModuleSymbolTable(module);
+                    }
                 }
             }
 
@@ -125,7 +134,9 @@ namespace ams::creport {
         }
     }
 
-    bool ModuleList::TryFindModule(uintptr_t *out_address, uintptr_t guess) {
+    bool ModuleList::TryFindModule(uintptr_t *out_address, uintptr_t guess, bool is_64_bit) {
+        AMS_UNUSED(is_64_bit);
+
         /* Query the memory region our guess falls in. */
         svc::MemoryInfo mi;
         svc::PageInfo pi;
@@ -199,7 +210,7 @@ namespace ams::creport {
             }
 
             /* Also validate that we're looking at a valid name. */
-            if (rodata_start.module_path.zero != 0 || rodata_start.module_path.path_length != strnlen(rodata_start.module_path.path, sizeof(rodata_start.module_path.path))) {
+            if (rodata_start.module_path.zero != 0 || rodata_start.module_path.path_length <= 0) {
                 return;
             }
         }
@@ -208,7 +219,7 @@ namespace ams::creport {
         /* Start after last slash in path. */
         const char *path = rodata_start.module_path.path;
         int ofs;
-        for (ofs = rodata_start.module_path.path_length; ofs >= 0; ofs--) {
+        for (ofs = std::min<size_t>(rodata_start.module_path.path_length, sizeof(rodata_start.module_path.path)); ofs >= 0; ofs--) {
             if (path[ofs] == '/' || path[ofs] == '\\') {
                 break;
             }
@@ -216,8 +227,8 @@ namespace ams::creport {
         ofs++;
 
         /* Copy name to output. */
-        const size_t name_size = std::min(ModuleNameLengthMax, sizeof(rodata_start.module_path.path) - ofs);
-        std::strncpy(out_name, path + ofs, name_size);
+        const size_t name_size = std::min(ModuleNameLengthMax, std::min<size_t>(rodata_start.module_path.path_length, sizeof(rodata_start.module_path.path)) - ofs);
+        std::memcpy(out_name, path + ofs, name_size);
         out_name[ModuleNameLengthMax - 1] = '\x00';
     }
 
@@ -247,6 +258,133 @@ namespace ams::creport {
         }
     }
 
+    void ModuleList::DetectModuleSymbolTable(ModuleInfo &module) {
+        /* If we already have a symbol table, no more parsing is needed. */
+        if (module.has_sym_table) {
+            return;
+        }
+
+        /* Declare temporaries. */
+        u64 temp_64;
+        u32 temp_32;
+
+        /* Get module state. */
+        svc::MemoryInfo mi;
+        svc::PageInfo pi;
+        if (R_FAILED(svc::QueryDebugProcessMemory(std::addressof(mi), std::addressof(pi), m_debug_handle, module.start_address))) {
+            return;
+        }
+
+        const auto module_state = mi.state;
+
+        /* Verify .rodata is read-only with same state as .text. */
+        if (R_FAILED(svc::QueryDebugProcessMemory(std::addressof(mi), std::addressof(pi), m_debug_handle, module.end_address)) || mi.permission != svc::MemoryPermission_Read || mi.state != module_state) {
+            return;
+        }
+
+        /* Read the first instruction of .text. */
+        if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_32)), m_debug_handle, module.start_address, sizeof(temp_32)))) {
+            return;
+        }
+
+        /* We want to find the symbol table/.dynamic. */
+        uintptr_t dyn_address = 0;
+        uintptr_t sym_tab     = 0;
+        uintptr_t str_tab     = 0;
+        size_t    num_sym     = 0;
+
+        /* Detect module type. */
+        if (temp_32 == 0) {
+            /* Module is dynamically loaded by rtld. */
+            u32 mod_offset;
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(mod_offset)), m_debug_handle, module.start_address + sizeof(u32), sizeof(u32)))) {
+                return;
+            }
+
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_32)), m_debug_handle, module.start_address + mod_offset, sizeof(u32)))) {
+                return;
+            }
+
+            if (temp_32 != rocrt::ModuleHeaderVersion) { /* MOD0 */
+                return;
+            }
+
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_32)), m_debug_handle, module.start_address + mod_offset + sizeof(u32), sizeof(u32)))) {
+                return;
+            }
+
+            dyn_address = module.start_address + mod_offset + temp_32;
+        } else if (temp_32 == 0x14000002) {
+            /* Module embeds rtld. */
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_32)), m_debug_handle, module.start_address + 0x5C, sizeof(u32)))) {
+                return;
+            }
+
+            if (temp_32 != 0x94000002) {
+                return;
+            }
+
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_32)), m_debug_handle, module.start_address + 0x60, sizeof(u32)))) {
+                return;
+            }
+
+            dyn_address = module.start_address + 0x60 + temp_32;
+        } else {
+            /* Module has unknown format. */
+            return;
+        }
+
+
+        /* Locate tables inside .dyn. */
+        for (size_t ofs = 0; /* ... */; ofs += 0x10) {
+            /* Read the DynamicTag. */
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_64)), m_debug_handle, dyn_address + ofs, sizeof(u64)))) {
+                return;
+            }
+
+            if (temp_64 == 0) {
+                /* We're done parsing .dyn. */
+                break;
+            } else if (temp_64 == 4) {
+                /* We found DT_HASH */
+                if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_64)), m_debug_handle, dyn_address + ofs + sizeof(u64), sizeof(u64)))) {
+                    return;
+                }
+
+                /* Read nchain, to get the number of symbols. */
+                if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_32)), m_debug_handle, module.start_address + temp_64 + sizeof(u32), sizeof(u32)))) {
+                    return;
+                }
+
+                num_sym = temp_32;
+            } else if (temp_64 == 5) {
+                /* We found DT_STRTAB */
+                if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_64)), m_debug_handle, dyn_address + ofs + sizeof(u64), sizeof(u64)))) {
+                    return;
+                }
+
+                str_tab = module.start_address + temp_64;
+            } else if (temp_64 == 6) {
+                /* We found DT_SYMTAB */
+                if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(temp_64)), m_debug_handle, dyn_address + ofs + sizeof(u64), sizeof(u64)))) {
+                    return;
+                }
+
+                sym_tab = module.start_address + temp_64;
+            }
+        }
+
+        /* Check that we found all the tables. */
+        if (!(sym_tab != 0 && str_tab != 0 && num_sym != 0)) {
+            return;
+        }
+
+        module.has_sym_table = true;
+        module.sym_tab       = sym_tab;
+        module.str_tab       = str_tab;
+        module.num_sym       = static_cast<u32>(num_sym);
+    }
+
     const char *ModuleList::GetFormattedAddressString(uintptr_t address) {
         /* Print default formatted string. */
         util::SNPrintf(m_address_str_buf, sizeof(m_address_str_buf), "%016lx", address);
@@ -255,8 +393,52 @@ namespace ams::creport {
         for (size_t i = 0; i < m_num_modules; i++) {
             const auto& module = m_modules[i];
             if (module.start_address <= address && address < module.end_address) {
+                if (module.has_sym_table) {
+                    /* Try to locate an appropriate symbol. */
+                    for (size_t j = 0; j < module.num_sym; ++j) {
+                        /* Read symbol from the module's symbol table. */
+                        struct {
+                            u32 st_name;
+                            u8  st_info;
+                            u8  st_other;
+                            u16 st_shndx;
+                            u64 st_value;
+                            u64 st_size;
+                        } sym;
+                        if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(sym)), m_debug_handle, module.sym_tab + j * sizeof(sym), sizeof(sym)))) {
+                            break;
+                        }
+
+                        /* Check the symbol is valid/STT_FUNC. */
+                        if (sym.st_shndx == 0 || ((sym.st_shndx & 0xFF00) == 0xFF00)) {
+                            continue;
+                        }
+                        if ((sym.st_info & 0xF) != 2) {
+                            continue;
+                        }
+
+                        /* Check the address. */
+                        const uintptr_t func_start = module.start_address + sym.st_value;
+                        if (func_start <= address && address < func_start + sym.st_size) {
+                            /* Read the symbol name. */
+                            const uintptr_t sym_address = module.str_tab + sym.st_name;
+                            char sym_name[0x80];
+                            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(sym_name), m_debug_handle, sym_address, sizeof(sym_name)))) {
+                                break;
+                            }
+
+                            /* Ensure null-termination. */
+                            sym_name[sizeof(sym_name) - 1] = '\x00';
+
+                            /* Print the symbol. */
+                            util::SNPrintf(m_address_str_buf, sizeof(m_address_str_buf), "%016lx (%s + 0x%lx) (%s + 0x%lx)", address, module.name, address - module.start_address, sym_name, address - func_start);
+                            return m_address_str_buf;
+                        }
+                    }
+                }
+
                 util::SNPrintf(m_address_str_buf, sizeof(m_address_str_buf), "%016lx (%s + 0x%lx)", address, module.name, address - module.start_address);
-                break;
+                return m_address_str_buf;
             }
         }
 

stratosphere/creport/source/creport_modules.hpp

@@ -30,6 +30,10 @@ namespace ams::creport {
                 u8   module_id[ModuleIdSize];
                 u64  start_address;
                 u64  end_address;
+                bool has_sym_table;
+                u64  sym_tab;
+                u64  str_tab;
+                u32  num_sym;
             };
         private:
             os::NativeHandle m_debug_handle;
@@ -37,7 +41,7 @@ namespace ams::creport {
             ModuleInfo m_modules[ModuleCountMax];
 
             /* For pretty-printing. */
-            char m_address_str_buf[0x280];
+            char m_address_str_buf[1_KB];
         public:
             ModuleList() : m_debug_handle(os::InvalidNativeHandle), m_num_modules(0) {
                 std::memset(m_modules, 0, sizeof(m_modules));
@@ -51,14 +55,15 @@ namespace ams::creport {
                 return m_modules[i].start_address;
             }
 
-            void FindModulesFromThreadInfo(os::NativeHandle debug_handle, const ThreadInfo &thread);
+            void FindModulesFromThreadInfo(os::NativeHandle debug_handle, const ThreadInfo &thread, bool is_64_bit);
             const char *GetFormattedAddressString(uintptr_t address);
             void SaveToFile(ScopedFile &file);
         private:
-            bool TryFindModule(uintptr_t *out_address, uintptr_t guess);
-            void TryAddModule(uintptr_t guess);
+            bool TryFindModule(uintptr_t *out_address, uintptr_t guess, bool is_64_bit);
+            void TryAddModule(uintptr_t guess, bool is_64_bit);
             void GetModuleName(char *out_name, uintptr_t text_start, uintptr_t ro_start);
             void GetModuleId(u8 *out, uintptr_t ro_start);
+            void DetectModuleSymbolTable(ModuleInfo &module);
     };
 
 }

stratosphere/dmnt.gen2/dmnt.gen2.json

@@ -15,7 +15,7 @@
 	"filesystem_access":	{
 		"permissions":	"0xFFFFFFFFFFFFFFFF"
 	},
-	"service_access":	["pm:dmnt", "ldr:dmnt", "ro:dmnt", "ns:dev", "lr", "fsp-srv", "fatal:u", "pgl", "htcs"],
+	"service_access":	["pm:dmnt", "ldr:dmnt", "ro:dmnt", "ns:dev", "lr", "fsp-srv", "fatal:u", "pgl", "htcs", "bsd:s", "set:sys"],
 	"service_host":	[],
 	"kernel_capabilities":	[{
 			"type":	"kernel_flags",

stratosphere/dmnt.gen2/source/dmnt2_debug_log.cpp

@@ -16,7 +16,8 @@
 #include <stratosphere.hpp>
 #include "dmnt2_debug_log.hpp"
 
-#define AMS_DMNT2_ENABLE_HTCS_DEBUG_LOG
+// TODO: This should be converted to use log manager. */
+//#define AMS_DMNT2_ENABLE_HTCS_DEBUG_LOG
 
 #if defined(AMS_DMNT2_ENABLE_HTCS_DEBUG_LOG)
 
@@ -164,15 +165,78 @@ namespace ams::dmnt {
 
 namespace ams::dmnt {
 
+    //#define AMS_DMNT2_ENABLE_SD_CARD_DEBUG_LOG
+
+    #if defined(AMS_DMNT2_ENABLE_SD_CARD_DEBUG_LOG)
+
+    namespace {
+
+        alignas(0x40) constinit u8 g_buffer[os::MemoryPageSize * 4];
+        constinit lmem::HeapHandle g_debug_log_heap;
+        constinit fs::FileHandle g_debug_log_file;
+
+        constinit os::SdkMutex g_fs_mutex;
+        constinit s64 g_fs_offset = 0;
+
+        void *Allocate(size_t size) {
+            return lmem::AllocateFromExpHeap(g_debug_log_heap, size);
+        }
+
+        void Deallocate(void *p, size_t size) {
+            AMS_UNUSED(size);
+            return lmem::FreeToExpHeap(g_debug_log_heap, p);
+        }
+
+    }
 
     void InitializeDebugLog() {
-        /* Do nothing. */
+        g_debug_log_heap = lmem::CreateExpHeap(g_buffer, sizeof(g_buffer), lmem::CreateOption_ThreadSafe);
+
+        fs::SetAllocator(Allocate, Deallocate);
+        fs::InitializeForSystem();
+        fs::SetEnabledAutoAbort(false);
+
+        R_ABORT_UNLESS(fs::MountSdCard("sdmc"));
+
+        fs::DeleteFile("sdmc:/dmnt2.log");
+        R_ABORT_UNLESS(fs::CreateFile("sdmc:/dmnt2.log", 0));
+        R_ABORT_UNLESS(fs::OpenFile(std::addressof(g_debug_log_file), "sdmc:/dmnt2.log", fs::OpenMode_Write | fs::OpenMode_AllowAppend));
     }
 
     void DebugLog(const char *prefix, const char *fmt, ...) {
         /* Do nothing. */
+        char buffer[0x200];
+        {
+            const auto prefix_len = std::strlen(prefix);
+            std::memcpy(buffer, prefix, prefix_len);
+
+            std::va_list vl;
+            va_start(vl, fmt);
+            util::VSNPrintf(buffer + prefix_len, sizeof(buffer) - prefix_len, fmt, vl);
+            va_end(vl);
+        }
+
+        const auto len = std::strlen(buffer);
+
+        std::scoped_lock lk(g_fs_mutex);
+        R_ABORT_UNLESS(fs::WriteFile(g_debug_log_file, g_fs_offset, buffer, len, fs::WriteOption::Flush));
+        g_fs_offset += len;
     }
 
+    #else
+
+    void InitializeDebugLog() {
+        /* ... */
+    }
+
+    void DebugLog(const char *prefix, const char *fmt, ...) {
+        AMS_UNUSED(prefix, fmt);
+    }
+
+    #endif
+
+
+
 }
 
 

stratosphere/dmnt.gen2/source/dmnt2_debug_process.cpp

@@ -27,10 +27,15 @@ namespace ams::dmnt {
 
     }
 
-    Result DebugProcess::Attach(os::ProcessId process_id) {
+    Result DebugProcess::Attach(os::ProcessId process_id, bool start_process) {
         /* Attach to the process. */
         R_TRY(svc::DebugActiveProcess(std::addressof(m_debug_handle), process_id.value));
 
+        /* If necessary, start the process. */
+        if (start_process) {
+            R_ABORT_UNLESS(pm::dmnt::StartProcess(process_id));
+        }
+
         /* Collect initial information. */
         R_TRY(this->Start());
 
@@ -42,6 +47,10 @@ namespace ams::dmnt {
         svc::GetProcessId(std::addressof(pid_value), m_debug_handle);
 
         m_process_id = { pid_value };
+
+        /* Get process info. */
+        this->CollectProcessInfo();
+
         return ResultSuccess();
     }
 
@@ -187,13 +196,25 @@ namespace ams::dmnt {
                         char path[ModuleDefinition::PathLengthMax];
                     } module_path;
                     if (R_SUCCEEDED(this->ReadMemory(std::addressof(module_path), memory_info.base_address + memory_info.size, sizeof(module_path)))) {
-                        if (module_path.zero == 0 && module_path.path_length == util::Strnlen(module_path.path, sizeof(module_path.path))) {
-                            std::memcpy(module_name, module_path.path, ModuleDefinition::PathLengthMax);
+                        if (module_path.zero == 0 && module_path.path_length > 0) {
+                            std::memcpy(module_name, module_path.path, std::min<size_t>(ModuleDefinition::PathLengthMax, module_path.path_length));
                         }
+                    } else {
+                        module_path.path_length = 0;
                     }
 
                     /* Truncate module name. */
                     module_name[ModuleDefinition::PathLengthMax - 1] = 0;
+
+                    /* Set default module name start. */
+                    module.SetNameStart(0);
+
+                    /* Ignore leading directories. */
+                    for (size_t i = 0; i < std::min<size_t>(ModuleDefinition::PathLengthMax, module_path.path_length) && module_name[i] != 0; ++i) {
+                        if (module_name[i] == '/' || module_name[i] == '\\') {
+                            module.SetNameStart(i + 1);
+                        }
+                    }
                 }
             }
 
@@ -212,6 +233,53 @@ namespace ams::dmnt {
         return ResultSuccess();
     }
 
+    void DebugProcess::CollectProcessInfo() {
+        /* Define helper for getting process info. */
+        auto CollectProcessInfoImpl = [&](os::NativeHandle handle) -> Result {
+            /* Collect all values. */
+            R_TRY(svc::GetInfo(std::addressof(m_process_alias_address), svc::InfoType_AliasRegionAddress, handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_alias_size),    svc::InfoType_AliasRegionSize,    handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_heap_address),  svc::InfoType_HeapRegionAddress,  handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_heap_size),     svc::InfoType_HeapRegionSize,     handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_aslr_address),  svc::InfoType_AslrRegionAddress,  handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_aslr_size),     svc::InfoType_AslrRegionSize,     handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_stack_address), svc::InfoType_StackRegionAddress, handle, 0));
+            R_TRY(svc::GetInfo(std::addressof(m_process_stack_size),    svc::InfoType_StackRegionSize,    handle, 0));
+
+            if (m_program_location.program_id == ncm::InvalidProgramId) {
+                R_TRY(svc::GetInfo(std::addressof(m_program_location.program_id.value), svc::InfoType_ProgramId, handle, 0));
+            }
+
+            u64 value;
+            R_TRY(svc::GetInfo(std::addressof(value), svc::InfoType_IsApplication, handle, 0));
+            m_is_application = value != 0;
+
+            return ResultSuccess();
+        };
+
+        /* Get process info/status. */
+        os::NativeHandle process_handle;
+        if (R_FAILED(pm::dmnt::AtmosphereGetProcessInfo(std::addressof(process_handle), std::addressof(m_program_location), std::addressof(m_process_override_status), m_process_id))) {
+            process_handle            = os::InvalidNativeHandle;
+            m_program_location        = { ncm::InvalidProgramId, };
+            m_process_override_status = {};
+        }
+        ON_SCOPE_EXIT { os::CloseNativeHandle(process_handle); };
+
+        /* Try collecting from our debug handle, then the process handle. */
+        if (R_FAILED(CollectProcessInfoImpl(m_debug_handle)) && R_FAILED(CollectProcessInfoImpl(process_handle))) {
+            m_process_alias_address = 0;
+            m_process_alias_size    = 0;
+            m_process_heap_address  = 0;
+            m_process_heap_size     = 0;
+            m_process_aslr_address  = 0;
+            m_process_aslr_size     = 0;
+            m_process_stack_address = 0;
+            m_process_stack_size    = 0;
+            m_is_application        = false;
+        }
+    }
+
     Result DebugProcess::GetThreadContext(svc::ThreadContext *out, u64 thread_id, u32 flags) {
         return svc::GetDebugThreadContext(out, m_debug_handle, thread_id, flags);
     }
@@ -228,6 +296,11 @@ namespace ams::dmnt {
         return svc::WriteDebugProcessMemory(m_debug_handle, reinterpret_cast<uintptr_t>(src), address, size);
     }
 
+    Result DebugProcess::QueryMemory(svc::MemoryInfo *out, uintptr_t address) {
+        svc::PageInfo dummy;
+        return svc::QueryDebugProcessMemory(out, std::addressof(dummy), m_debug_handle, address);
+    }
+
     Result DebugProcess::Continue() {
         AMS_DMNT2_GDB_LOG_DEBUG("DebugProcess::Continue() all\n");
 
@@ -522,5 +595,25 @@ namespace ams::dmnt {
         return ResultSuccess();
     }
 
+    void DebugProcess::GetThreadName(char *dst, u64 thread_id) const {
+        for (size_t i = 0; i < ThreadCountMax; ++i) {
+            if (m_thread_valid[i] && m_thread_ids[i] == thread_id) {
+                if (R_FAILED(osdbg::GetThreadName(dst, std::addressof(m_thread_infos[i])))) {
+                    if (m_thread_infos[i]._thread_type != 0) {
+                        if (m_thread_infos[i]._thread_type_type == osdbg::ThreadTypeType_Libnx) {
+                            util::TSNPrintf(dst, os::ThreadNameLengthMax, "libnx Thread_0x%010lx", reinterpret_cast<uintptr_t>(m_thread_infos[i]._thread_type));
+                        } else {
+                            util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_0x%010lx", reinterpret_cast<uintptr_t>(m_thread_infos[i]._thread_type));
+                        }
+                    } else {
+                        break;
+                    }
+                }
+                return;
+            }
+        }
+
+        util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_ID=%lu", thread_id);
+    }
 
 }

stratosphere/dmnt.gen2/source/dmnt2_debug_process.hpp

@@ -50,6 +50,7 @@ namespace ams::dmnt {
             u64 m_last_thread_id{};
             u64 m_thread_id_override{};
             u64 m_continue_thread_id{};
+            u64 m_preferred_debug_break_thread_id{};
             GdbSignal m_last_signal{};
             bool m_stepping{false};
             bool m_use_hardware_single_step{false};
@@ -64,6 +65,17 @@ namespace ams::dmnt {
             ModuleDefinition m_module_definitions[ModuleCountMax]{};
             size_t m_module_count{};
             size_t m_main_module{};
+            u64 m_process_alias_address{};
+            u64 m_process_alias_size{};
+            u64 m_process_heap_address{};
+            u64 m_process_heap_size{};
+            u64 m_process_aslr_address{};
+            u64 m_process_aslr_size{};
+            u64 m_process_stack_address{};
+            u64 m_process_stack_size{};
+            ncm::ProgramLocation m_program_location{};
+            cfg::OverrideStatus m_process_override_status{};
+            bool m_is_application{false};
         public:
             DebugProcess() : m_software_breakpoints(this), m_hardware_breakpoints(this), m_hardware_watchpoints(this), m_step_breakpoints(m_software_breakpoints) {
                 if (svc::IsKernelMesosphere()) {
@@ -80,7 +92,8 @@ namespace ams::dmnt {
             size_t GetModuleCount() const { return m_module_count; }
             size_t GetMainModuleIndex() const { return m_main_module; }
             const char *GetModuleName(size_t ix) const { return m_module_definitions[ix].GetName(); }
-            uintptr_t GetBaseAddress(size_t ix) const { return m_module_definitions[ix].GetAddress(); }
+            uintptr_t GetModuleBaseAddress(size_t ix) const { return m_module_definitions[ix].GetAddress(); }
+            uintptr_t GetModuleSize(size_t ix) const { return m_module_definitions[ix].GetSize(); }
             ProcessStatus GetStatus() const { return m_status; }
             os::ProcessId GetProcessId() const { return m_process_id; }
 
@@ -95,20 +108,37 @@ namespace ams::dmnt {
             u64 GetLastThreadId();
             u64 GetThreadIdOverride() { this->GetLastThreadId(); return m_thread_id_override; }
 
+            u64 GetPreferredDebuggerBreakThreadId() { return m_preferred_debug_break_thread_id; }
+
             void SetLastThreadId(u64 tid) {
                 m_last_thread_id     = tid;
                 m_thread_id_override = tid;
             }
 
             void SetThreadIdOverride(u64 tid) {
-                m_thread_id_override = tid;
+                m_thread_id_override              = tid;
+                m_preferred_debug_break_thread_id = tid;
             }
 
             void SetDebugBreaked() {
                 m_status = ProcessStatus_DebugBreak;
             }
+
+            u64 GetAliasRegionAddress() const { return m_process_alias_address; }
+            u64 GetAliasRegionSize()    const { return m_process_alias_size; }
+            u64 GetHeapRegionAddress()  const { return m_process_heap_address; }
+            u64 GetHeapRegionSize()     const { return m_process_heap_size; }
+            u64 GetAslrRegionAddress()  const { return m_process_aslr_address; }
+            u64 GetAslrRegionSize()     const { return m_process_aslr_size; }
+            u64 GetStackRegionAddress() const { return m_process_stack_address; }
+            u64 GetStackRegionSize()    const { return m_process_stack_size; }
+
+            const ncm::ProgramLocation &GetProgramLocation() const { return m_program_location; }
+            const cfg::OverrideStatus &GetOverrideStatus() const { return m_process_override_status; }
+
+            bool IsApplication() const { return m_is_application; }
         public:
-            Result Attach(os::ProcessId process_id);
+            Result Attach(os::ProcessId process_id, bool start_process = false);
             void Detach();
 
             Result GetThreadContext(svc::ThreadContext *out, u64 thread_id, u32 flags);
@@ -117,6 +147,8 @@ namespace ams::dmnt {
             Result ReadMemory(void *dst, uintptr_t address, size_t size);
             Result WriteMemory(const void *src, uintptr_t address, size_t size);
 
+            Result QueryMemory(svc::MemoryInfo *out, uintptr_t address);
+
             Result Continue();
             Result Continue(u64 thread_id);
             Result Step();
@@ -146,9 +178,13 @@ namespace ams::dmnt {
             void GetBranchTarget(svc::ThreadContext &ctx, u64 thread_id, u64 &current_pc, u64 &target);
 
             Result CollectModules();
+
+            void GetThreadName(char *dst, u64 thread_id) const;
         private:
             Result Start();
 
+            void CollectProcessInfo();
+
             s32 ThreadCreate(u64 thread_id);
             void ThreadExit(u64 thread_id);
     };

stratosphere/dmnt.gen2/source/dmnt2_gdb_packet_io.cpp

@@ -41,7 +41,7 @@ namespace ams::dmnt {
 
     }
 
-    void GdbPacketIo::SendPacket(bool *out_break, const char *src, HtcsSession *session) {
+    void GdbPacketIo::SendPacket(bool *out_break, const char *src, TransportSession *session) {
         /* Default to not breaked. */
         *out_break = false;
 
@@ -99,7 +99,7 @@ namespace ams::dmnt {
         }
     }
 
-    char *GdbPacketIo::ReceivePacket(bool *out_break, char *dst, size_t size, HtcsSession *session) {
+    char *GdbPacketIo::ReceivePacket(bool *out_break, char *dst, size_t size, TransportSession *session) {
         /* Default to not breaked. */
         *out_break = false;
 

stratosphere/dmnt.gen2/source/dmnt2_gdb_packet_io.hpp

@@ -15,11 +15,11 @@
  */
 #pragma once
 #include <stratosphere.hpp>
-#include "dmnt2_htcs_session.hpp"
+#include "dmnt2_transport_session.hpp"
 
 namespace ams::dmnt {
 
-    static constexpr size_t GdbPacketBufferSize = 16_KB;
+    static constexpr size_t GdbPacketBufferSize = 32_KB;
 
     class GdbPacketIo {
         private:
@@ -30,8 +30,8 @@ namespace ams::dmnt {
 
             void SetNoAck() { m_no_ack = true; }
 
-            void SendPacket(bool *out_break, const char *src, HtcsSession *session);
-            char *ReceivePacket(bool *out_break, char *dst, size_t size, HtcsSession *session);
+            void SendPacket(bool *out_break, const char *src, TransportSession *session);
+            char *ReceivePacket(bool *out_break, char *dst, size_t size, TransportSession *session);
     };
 
 }

stratosphere/dmnt.gen2/source/dmnt2_gdb_server.cpp

@@ -15,6 +15,7 @@
  */
 #include <stratosphere.hpp>
 #include "dmnt2_debug_log.hpp"
+#include "dmnt2_transport_layer.hpp"
 #include "dmnt2_gdb_server.hpp"
 #include "dmnt2_gdb_server_impl.hpp"
 
@@ -36,34 +37,28 @@ namespace ams::dmnt {
             while (true) {
                 /* Get a socket. */
                 int fd;
-                while ((fd = htcs::Socket()) == -1) {
+                while ((fd = transport::Socket()) == -1) {
                     os::SleepThread(TimeSpan::FromSeconds(1));
                 }
 
                 /* Ensure we cleanup the socket when we're done with it. */
                 ON_SCOPE_EXIT {
-                    htcs::Close(fd);
+                    transport::Close(fd);
                     os::SleepThread(TimeSpan::FromSeconds(1));
                 };
 
-                /* Create a sock addr for our server. */
-                htcs::SockAddrHtcs addr;
-                addr.family    = htcs::HTCS_AF_HTCS;
-                addr.peer_name = htcs::GetPeerNameAny();
-                std::strcpy(addr.port_name.name, "iywys@$gdb");
-
                 /* Bind. */
-                if (htcs::Bind(fd, std::addressof(addr)) == -1) {
+                if (transport::Bind(fd, transport::PortName_GdbServer) == -1) {
                     continue;
                 }
 
                 /* Listen on our port. */
-                while (htcs::Listen(fd, 0) == 0) {
+                while (transport::Listen(fd, 0) == 0) {
                     /* Continue accepting clients, so long as we can. */
                     int client_fd;
                     while (true) {
                         /* Try to accept a client. */
-                        if (client_fd = htcs::Accept(fd, std::addressof(addr)); client_fd < 0) {
+                        if (client_fd = transport::Accept(fd); client_fd < 0) {
                             break;
                         }
 
@@ -77,7 +72,7 @@ namespace ams::dmnt {
                         }
 
                         /* Close the client socket. */
-                        htcs::Close(client_fd);
+                        transport::Close(client_fd);
                     }
                 }
             }

stratosphere/dmnt.gen2/source/dmnt2_gdb_server_impl.hpp

@@ -31,10 +31,11 @@ namespace ams::dmnt {
             };
         private:
             int m_socket;
-            HtcsSession m_session;
+            TransportSession m_session;
             GdbPacketIo m_packet_io;
             char *m_receive_packet{nullptr};
-            char *m_reply_packet{nullptr};
+            char *m_reply_cur{nullptr};
+            char *m_reply_end{nullptr};
             char m_buffer[GdbPacketBufferSize / 2];
             bool m_killed{false};
             os::ThreadType m_events_thread;
@@ -42,6 +43,7 @@ namespace ams::dmnt {
             DebugProcess m_debug_process;
             os::ProcessId m_process_id{os::InvalidProcessId};
             os::Event m_event;
+            os::ProcessId m_wait_process_id{os::InvalidProcessId};
         public:
             GdbServerImpl(int socket, void *thread_stack, size_t stack_size);
             ~GdbServerImpl();
@@ -60,7 +62,7 @@ namespace ams::dmnt {
             static void DebugEventsThreadEntry(void *arg) { static_cast<GdbServerImpl *>(arg)->DebugEventsThread(); }
             void DebugEventsThread();
             void ProcessDebugEvents();
-            void SetStopReplyPacket(GdbSignal signal);
+            void AppendStopReplyPacket(GdbSignal signal);
         private:
             void D();
 
@@ -98,6 +100,7 @@ namespace ams::dmnt {
 
             void qAttached();
             void qC();
+            void qRcmd();
             void qSupported();
             void qXfer();
             void qXferFeaturesRead();

stratosphere/dmnt.gen2/source/dmnt2_main.cpp

@@ -16,15 +16,22 @@
 #include <stratosphere.hpp>
 #include "dmnt2_debug_log.hpp"
 #include "dmnt2_gdb_server.hpp"
+#include "dmnt2_transport_layer.hpp"
 
 namespace ams {
 
-    namespace dmnt {
+    namespace {
 
-        namespace {
-
-            alignas(0x40) constinit u8 g_htcs_buffer[4_KB];
+        bool IsHtcEnabled() {
+            u8 enable_htc = 0;
+            settings::fwdbg::GetSettingsItemValue(std::addressof(enable_htc), sizeof(enable_htc), "atmosphere", "enable_htc");
+            return enable_htc != 0;
+        }
 
+        bool IsStandaloneGdbstubEnabled() {
+            u8 enable_gdbstub = 0;
+            settings::fwdbg::GetSettingsItemValue(std::addressof(enable_gdbstub), sizeof(enable_gdbstub), "atmosphere", "enable_standalone_gdbstub");
+            return enable_gdbstub != 0;
         }
 
     }
@@ -35,6 +42,9 @@ namespace ams {
             /* Initialize our connection to sm. */
             R_ABORT_UNLESS(sm::Initialize());
 
+            /* Initialize other services we need. */
+            R_ABORT_UNLESS(pmdmntInitialize());
+
             /* Verify that we can sanely execute. */
             ams::CheckApiVersion();
         }
@@ -50,11 +60,23 @@ namespace ams {
         os::SetThreadNamePointer(os::GetCurrentThread(), AMS_GET_SYSTEM_THREAD_NAME(dmnt, Main));
         AMS_ASSERT(os::GetThreadPriority(os::GetCurrentThread()) == AMS_GET_SYSTEM_THREAD_PRIORITY(dmnt, Main));
 
-        /* Initialize htcs. */
-        constexpr auto HtcsSocketCountMax = 8;
-        const size_t buffer_size = htcs::GetWorkingMemorySize(HtcsSocketCountMax);
-        AMS_ABORT_UNLESS(sizeof(dmnt::g_htcs_buffer) >= buffer_size);
-        htcs::InitializeForSystem(dmnt::g_htcs_buffer, buffer_size, HtcsSocketCountMax);
+        bool use_htcs = false, use_tcp = false;
+        {
+            R_ABORT_UNLESS(::setsysInitialize());
+            ON_SCOPE_EXIT { ::setsysExit(); };
+
+            use_htcs = IsHtcEnabled();
+            use_tcp  = IsStandaloneGdbstubEnabled();
+        }
+
+        /* Initialize transport layer. */
+        if (use_htcs) {
+            dmnt::transport::InitializeByHtcs();
+        } else if (use_tcp) {
+            dmnt::transport::InitializeByTcp();
+        } else {
+            return;
+        }
 
         /* Initialize debug log thread. */
         dmnt::InitializeDebugLog();

stratosphere/dmnt.gen2/source/dmnt2_module_definition.hpp

@@ -26,6 +26,7 @@ namespace ams::dmnt {
             char m_name[PathLengthMax];
             u64 m_address;
             u64 m_size;
+            size_t m_name_start;
         public:
             constexpr ModuleDefinition() : m_name(), m_address(), m_size() { /* ... */ }
             constexpr ~ModuleDefinition() { /* ... */ }
@@ -34,9 +35,10 @@ namespace ams::dmnt {
             constexpr ModuleDefinition &operator=(const ModuleDefinition &rhs) = default;
 
             constexpr void Reset() {
-                m_name[0] = 0;
-                m_address = 0;
-                m_size    = 0;
+                m_name[0]    = 0;
+                m_address    = 0;
+                m_size       = 0;
+                m_name_start = 0;
             }
 
             constexpr bool operator==(const ModuleDefinition &rhs) const {
@@ -48,7 +50,7 @@ namespace ams::dmnt {
             }
 
             constexpr char *GetNameBuffer() { return m_name; }
-            constexpr const char *GetName() const { return m_name; }
+            constexpr const char *GetName() const { return m_name + m_name_start; }
 
             constexpr u64 GetAddress() const { return m_address; }
             constexpr u64 GetSize() const { return m_size; }
@@ -57,6 +59,10 @@ namespace ams::dmnt {
                 m_address = address;
                 m_size    = size;
             }
+
+            constexpr void SetNameStart(size_t offset) {
+                m_name_start = offset;
+            }
     };
 
 }

stratosphere/dmnt.gen2/source/dmnt2_transport_layer.cpp

@@ -0,0 +1,196 @@
+/*
+ * Copyright (c) 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 <stratosphere.hpp>
+#include "dmnt2_transport_layer.hpp"
+
+namespace ams::dmnt::transport {
+
+    namespace {
+
+        enum SocketMode {
+            SocketMode_Invalid,
+            SocketMode_Htcs,
+            SocketMode_Tcp,
+        };
+
+        constexpr inline const u16 ListenPort_GdbServer   = 22225;
+        constexpr inline const u16 ListenPort_GdbDebugLog = 22227;
+
+        constinit os::SdkMutex g_socket_init_mutex;
+        constinit SocketMode g_socket_mode = SocketMode_Invalid;
+
+        constexpr inline size_t RequiredAlignment = std::max(os::ThreadStackAlignment, os::MemoryPageSize);
+
+        using SocketConfigType = socket::SystemConfigLightDefault;
+
+        /* TODO: If we ever use resolvers, increase this. */
+        constexpr inline size_t SocketAllocatorSize  = 4_KB;
+        constexpr inline size_t SocketMemoryPoolSize = util::AlignUp(SocketConfigType::PerTcpSocketWorstCaseMemoryPoolSize + SocketConfigType::PerUdpSocketWorstCaseMemoryPoolSize, os::MemoryPageSize);
+
+        constexpr inline size_t SocketRequiredSize   = util::AlignUp(SocketMemoryPoolSize + SocketAllocatorSize, os::MemoryPageSize);
+
+        /* Declare the memory pool. */
+        alignas(RequiredAlignment) constinit u8 g_socket_memory[SocketRequiredSize];
+
+        constexpr inline const SocketConfigType SocketConfig(g_socket_memory, SocketRequiredSize, SocketAllocatorSize, 2);
+
+    }
+
+    void InitializeByHtcs() {
+        std::scoped_lock lk(g_socket_init_mutex);
+        AMS_ABORT_UNLESS(g_socket_mode == SocketMode_Invalid);
+
+        constexpr auto HtcsSocketCountMax = 8;
+        const size_t buffer_size = htcs::GetWorkingMemorySize(HtcsSocketCountMax);
+        AMS_ABORT_UNLESS(sizeof(g_socket_memory) >= buffer_size);
+        htcs::InitializeForSystem(g_socket_memory, sizeof(g_socket_memory), HtcsSocketCountMax);
+
+        g_socket_mode = SocketMode_Htcs;
+    }
+
+    void InitializeByTcp() {
+        std::scoped_lock lk(g_socket_init_mutex);
+        AMS_ABORT_UNLESS(g_socket_mode == SocketMode_Invalid);
+
+        R_ABORT_UNLESS(socket::Initialize(SocketConfig));
+
+        g_socket_mode = SocketMode_Tcp;
+    }
+
+    s32 Socket() {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::Socket();
+            case SocketMode_Tcp:  return socket::Socket(socket::Family::Af_Inet, socket::Type::Sock_Stream, socket::Protocol::IpProto_Tcp);
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    s32 Close(s32 desc) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs:   return htcs::Close(desc);
+            case SocketMode_Tcp: return socket::Close(desc);
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    s32 Bind(s32 desc, PortName port_name) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs:
+                {
+                    htcs::SockAddrHtcs addr;
+                    addr.family    = htcs::HTCS_AF_HTCS;
+                    addr.peer_name = htcs::GetPeerNameAny();
+                    switch (port_name) {
+                        case PortName_GdbServer:   std::strcpy(addr.port_name.name, "iywys@$gdb"); break;
+                        case PortName_GdbDebugLog: std::strcpy(addr.port_name.name, "iywys@$dmnt2_log"); break;
+                        AMS_UNREACHABLE_DEFAULT_CASE();
+                    }
+
+                    return htcs::Bind(desc, std::addressof(addr));
+                }
+                break;
+            case SocketMode_Tcp:
+                {
+                    socket::SockAddrIn addr = {};
+                    addr.sin_family      = socket::Family::Af_Inet;
+                    addr.sin_addr.s_addr = socket::InAddr_Any;
+
+                    switch (port_name){
+                        case PortName_GdbServer:   addr.sin_port = socket::InetHtons(static_cast<u16>(ListenPort_GdbServer)); break;
+                        case PortName_GdbDebugLog: addr.sin_port = socket::InetHtons(static_cast<u16>(ListenPort_GdbDebugLog)); break;
+                        AMS_UNREACHABLE_DEFAULT_CASE();
+                    }
+
+                    return socket::Bind(desc, reinterpret_cast<socket::SockAddr *>(std::addressof(addr)), sizeof(addr));
+                }
+                break;
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    s32 Listen(s32 desc, s32 backlog_count) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::Listen(desc, backlog_count);
+            case SocketMode_Tcp:  return socket::Listen(desc, backlog_count);
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    s32 Accept(s32 desc) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs:
+                {
+                    htcs::SockAddrHtcs addr;
+                    addr.family    = htcs::HTCS_AF_HTCS;
+                    addr.peer_name = htcs::GetPeerNameAny();
+                    addr.port_name.name[0] = '\x00';
+
+                    return htcs::Accept(desc, std::addressof(addr));
+                }
+                break;
+            case SocketMode_Tcp:
+                {
+                    socket::SockAddrIn addr = {};
+                    socket::SockLenT addr_len = sizeof(addr);
+
+                    return socket::Accept(desc, reinterpret_cast<socket::SockAddr *>(std::addressof(addr)), std::addressof(addr_len));
+                }
+                break;
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    s32 Shutdown(s32 desc) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::Shutdown(desc, htcs::HTCS_SHUT_RDWR);
+            case SocketMode_Tcp:  return socket::Shutdown(desc, socket::ShutdownMethod::Shut_RdWr);
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    ssize_t Recv(s32 desc, void *buffer, size_t buffer_size, s32 flags) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::Recv(desc, buffer, buffer_size, flags);
+            case SocketMode_Tcp:  return socket::Recv(desc, buffer, buffer_size, static_cast<socket::MsgFlag>(flags));
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    ssize_t Send(s32 desc, const void *buffer, size_t buffer_size, s32 flags) {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::Send(desc, buffer, buffer_size, flags);
+            case SocketMode_Tcp:  return socket::Send(desc, buffer, buffer_size, static_cast<socket::MsgFlag>(flags));
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    s32 GetLastError() {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::GetLastError();
+            case SocketMode_Tcp:  return static_cast<s32>(socket::GetLastError());
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+    bool IsLastErrorEAgain() {
+        switch (g_socket_mode) {
+            case SocketMode_Htcs: return htcs::GetLastError() == htcs::HTCS_EAGAIN;
+            case SocketMode_Tcp:  return socket::GetLastError() == socket::Errno::EAgain;
+            AMS_UNREACHABLE_DEFAULT_CASE();
+        }
+    }
+
+}

stratosphere/dmnt.gen2/source/dmnt2_transport_layer.hpp

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 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/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::dmnt::transport {
+
+    void InitializeByHtcs();
+    void InitializeByTcp();
+
+    enum PortName {
+        PortName_GdbServer,
+        PortName_GdbDebugLog,
+    };
+
+    s32 Socket();
+    s32 Close(s32 desc);
+    s32 Bind(s32 desc, PortName port_name);
+    s32 Listen(s32 desc, s32 backlog_count);
+    s32 Accept(s32 desc);
+    s32 Shutdown(s32 desc);
+
+    ssize_t Recv(s32 desc, void *buffer, size_t buffer_size, s32 flags);
+    ssize_t Send(s32 desc, const void *buffer, size_t buffer_size, s32 flags);
+
+    s32 GetLastError();
+    bool IsLastErrorEAgain();
+
+}

stratosphere/dmnt.gen2/source/dmnt2_transport_receive_buffer.cpp

@@ -14,11 +14,11 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <stratosphere.hpp>
-#include "dmnt2_htcs_receive_buffer.hpp"
+#include "dmnt2_transport_receive_buffer.hpp"
 
 namespace ams::dmnt {
 
-    ssize_t HtcsReceiveBuffer::Read(void *dst, size_t size) {
+    ssize_t TransportReceiveBuffer::Read(void *dst, size_t size) {
         /* Acquire exclusive access to ourselves. */
         std::scoped_lock lk(m_mutex);
 
@@ -50,7 +50,7 @@ namespace ams::dmnt {
         return readable;
     }
 
-    ssize_t HtcsReceiveBuffer::Write(const void *src, size_t size) {
+    ssize_t TransportReceiveBuffer::Write(const void *src, size_t size) {
         /* Acquire exclusive access to ourselves. */
         std::scoped_lock lk(m_mutex);
 
@@ -71,7 +71,7 @@ namespace ams::dmnt {
         return size;
     }
 
-    bool HtcsReceiveBuffer::WaitToBeReadable() {
+    bool TransportReceiveBuffer::WaitToBeReadable() {
         /* Check if we're already readable. */
         {
             std::scoped_lock lk(m_mutex);
@@ -91,7 +91,7 @@ namespace ams::dmnt {
         return this->IsValid();
     }
 
-    bool HtcsReceiveBuffer::WaitToBeReadable(TimeSpan timeout) {
+    bool TransportReceiveBuffer::WaitToBeReadable(TimeSpan timeout) {
         /* Check if we're already readable. */
         {
             std::scoped_lock lk(m_mutex);
@@ -111,7 +111,7 @@ namespace ams::dmnt {
         return res && this->IsValid();
     }
 
-    bool HtcsReceiveBuffer::WaitToBeWritable() {
+    bool TransportReceiveBuffer::WaitToBeWritable() {
         /* Check if we're already writable. */
         {
             std::scoped_lock lk(m_mutex);
@@ -131,7 +131,7 @@ namespace ams::dmnt {
         return this->IsValid();
     }
 
-    void HtcsReceiveBuffer::Invalidate() {
+    void TransportReceiveBuffer::Invalidate() {
         /* Acquire exclusive access to ourselves. */
         std::scoped_lock lk(m_mutex);
 

stratosphere/dmnt.gen2/source/dmnt2_transport_receive_buffer.hpp

@@ -18,7 +18,7 @@
 
 namespace ams::dmnt {
 
-    class HtcsReceiveBuffer {
+    class TransportReceiveBuffer {
         public:
             static constexpr size_t ReceiveBufferSize = 4_KB;
         private:
@@ -30,7 +30,7 @@ namespace ams::dmnt {
             size_t m_offset;
             bool m_valid;
         public:
-            HtcsReceiveBuffer() : m_readable_event(os::EventClearMode_ManualClear), m_writable_event(os::EventClearMode_ManualClear), m_mutex(), m_readable_size(), m_offset(), m_valid(true) { /* ... */ }
+            TransportReceiveBuffer() : m_readable_event(os::EventClearMode_ManualClear), m_writable_event(os::EventClearMode_ManualClear), m_mutex(), m_readable_size(), m_offset(), m_valid(true) { /* ... */ }
 
             ALWAYS_INLINE bool IsReadable() const { return m_readable_size != 0; }
             ALWAYS_INLINE bool IsWritable() const { return m_readable_size == 0; }

stratosphere/dmnt.gen2/source/dmnt2_transport_session.cpp

@@ -14,12 +14,13 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 #include <stratosphere.hpp>
-#include "dmnt2_htcs_session.hpp"
+#include "dmnt2_transport_layer.hpp"
+#include "dmnt2_transport_session.hpp"
 #include "dmnt2_debug_log.hpp"
 
 namespace ams::dmnt {
 
-    HtcsSession::HtcsSession(int fd) : m_socket(fd), m_valid(true) {
+    TransportSession::TransportSession(int fd) : m_socket(fd), m_valid(true) {
         /* Create our thread. */
         R_ABORT_UNLESS(os::CreateThread(std::addressof(m_receive_thread), ReceiveThreadEntry, this, m_receive_thread_stack, sizeof(m_receive_thread_stack), os::HighestThreadPriority - 1));
 
@@ -30,7 +31,7 @@ namespace ams::dmnt {
         AMS_DMNT2_GDB_LOG_INFO("Created Session %d\n", m_socket);
     }
 
-    HtcsSession::~HtcsSession() {
+    TransportSession::~TransportSession() {
         /* Note that we connected. */
         AMS_DMNT2_GDB_LOG_INFO("Closing Session %d\n", m_socket);
 
@@ -38,25 +39,25 @@ namespace ams::dmnt {
         m_receive_buffer.Invalidate();
 
         /* Shutdown our socket. */
-        htcs::Shutdown(m_socket, htcs::HTCS_SHUT_RDWR);
+        transport::Shutdown(m_socket);
 
         /* Wait for our thread. */
         os::WaitThread(std::addressof(m_receive_thread));
         os::DestroyThread(std::addressof(m_receive_thread));
 
         /* Close our socket. */
-        htcs::Close(m_socket);
+        transport::Close(m_socket);
     }
 
-    bool HtcsSession::WaitToBeReadable() {
+    bool TransportSession::WaitToBeReadable() {
         return m_receive_buffer.WaitToBeReadable();
     }
 
-    bool HtcsSession::WaitToBeReadable(TimeSpan timeout) {
+    bool TransportSession::WaitToBeReadable(TimeSpan timeout) {
         return m_receive_buffer.WaitToBeReadable(timeout);
     }
 
-    util::optional<char> HtcsSession::GetChar() {
+    util::optional<char> TransportSession::GetChar() {
         /* Wait for us to have data. */
         m_receive_buffer.WaitToBeReadable();
 
@@ -69,9 +70,9 @@ namespace ams::dmnt {
         }
     }
 
-    ssize_t HtcsSession::PutChar(char c) {
+    ssize_t TransportSession::PutChar(char c) {
         /* Send the character. */
-        const auto sent = htcs::Send(m_socket, std::addressof(c), sizeof(c), 0);
+        const auto sent = transport::Send(m_socket, std::addressof(c), sizeof(c), 0);
         if (sent < 0) {
             m_valid = false;
         }
@@ -79,13 +80,13 @@ namespace ams::dmnt {
         return sent;
     }
 
-    ssize_t HtcsSession::PutString(const char *str) {
+    ssize_t TransportSession::PutString(const char *str) {
         /* Repeatedly send until all is sent. */
         const size_t len = std::strlen(str);
 
         size_t remaining = len;
         while (remaining > 0) {
-            const auto sent = htcs::Send(m_socket, str, remaining, 0);
+            const auto sent = transport::Send(m_socket, str, remaining, 0);
             if (sent >= 0) {
                 remaining -= sent;
                 str += sent;
@@ -98,22 +99,22 @@ namespace ams::dmnt {
         return len;
     }
 
-    void HtcsSession::ReceiveThreadFunction() {
+    void TransportSession::ReceiveThreadFunction() {
         /* Create temporary buffer. */
-        u8 buffer[HtcsReceiveBuffer::ReceiveBufferSize];
+        u8 buffer[TransportReceiveBuffer::ReceiveBufferSize];
 
         /* Loop receiving data. */
         while (true) {
             /* Receive data. */
-            const auto res = htcs::Recv(m_socket, buffer, sizeof(buffer), 0);
+            const auto res = transport::Recv(m_socket, buffer, sizeof(buffer), 0);
             if (res > 0) {
                 /* Write the data to our buffer. */
                 m_receive_buffer.WaitToBeWritable();
                 m_receive_buffer.Write(buffer, res);
             } else {
                 /* Otherwise, if we got an error other than "try again", we're done. */
-                if (htcs::GetLastError() != htcs::HTCS_EAGAIN) {
-                    AMS_DMNT2_GDB_LOG_INFO("Session %d invalid, res=%ld, err=%d\n", m_socket, res, static_cast<int>(htcs::GetLastError()));
+                if (!transport::IsLastErrorEAgain()) {
+                    AMS_DMNT2_GDB_LOG_INFO("Session %d invalid, res=%ld, err=%d\n", m_socket, res, static_cast<int>(transport::GetLastError()));
                     m_valid = false;
                     break;
                 }

stratosphere/dmnt.gen2/source/dmnt2_transport_session.hpp

@@ -15,20 +15,20 @@
  */
 #pragma once
 #include <stratosphere.hpp>
-#include "dmnt2_htcs_receive_buffer.hpp"
+#include "dmnt2_transport_receive_buffer.hpp"
 
 namespace ams::dmnt {
 
-    class HtcsSession {
+    class TransportSession {
         private:
-            alignas(os::ThreadStackAlignment) u8 m_receive_thread_stack[util::AlignUp(os::MemoryPageSize + HtcsReceiveBuffer::ReceiveBufferSize, os::ThreadStackAlignment)];
-            HtcsReceiveBuffer m_receive_buffer;
+            alignas(os::ThreadStackAlignment) u8 m_receive_thread_stack[util::AlignUp(os::MemoryPageSize + TransportReceiveBuffer::ReceiveBufferSize, os::ThreadStackAlignment)];
+            TransportReceiveBuffer m_receive_buffer;
             os::ThreadType m_receive_thread;
             int m_socket;
             bool m_valid;
         public:
-            HtcsSession(int fd);
-            ~HtcsSession();
+            TransportSession(int fd);
+            ~TransportSession();
 
             ALWAYS_INLINE bool IsValid() const { return m_valid; }
 
@@ -41,7 +41,7 @@ namespace ams::dmnt {
 
         private:
             static void ReceiveThreadEntry(void *arg) {
-                static_cast<HtcsSession *>(arg)->ReceiveThreadFunction();
+                static_cast<TransportSession *>(arg)->ReceiveThreadFunction();
             }
 
             void ReceiveThreadFunction();

stratosphere/dmnt/source/cheat/impl/dmnt_cheat_api.cpp

@@ -248,7 +248,6 @@ namespace ams::dmnt::cheat::impl {
                 void StartProcess(os::ProcessId process_id) const {
                     R_ABORT_UNLESS(pm::dmnt::StartProcess(process_id));
                 }
-
             public:
                 CheatProcessManager() : m_cheat_lock(), m_unsafe_break_event(os::EventClearMode_ManualClear), m_debug_events_event(os::EventClearMode_AutoClear), m_cheat_process_event(os::EventClearMode_AutoClear, true) {
                     /* Learn whether we should enable cheats by default. */

stratosphere/spl/source/spl_secure_monitor_manager.cpp

@@ -131,11 +131,17 @@ namespace ams::spl {
     }
 
     Result SecureMonitorManager::AllocateAesKeySlot(s32 *out_keyslot, const void *owner) {
+        /* Allocate a new virtual keyslot. */
         s32 keyslot;
         R_TRY(impl::AllocateAesKeySlot(std::addressof(keyslot)));
 
+        /* Get the keyslot's index. */
         s32 index;
-        R_ABORT_UNLESS(impl::TestAesKeySlot(std::addressof(index), keyslot));
+        bool virt;
+        R_ABORT_UNLESS(impl::TestAesKeySlot(std::addressof(index), std::addressof(virt), keyslot));
+
+        /* All allocated keyslots must be virtual. */
+        AMS_ABORT_UNLESS(virt);
 
         m_aes_keyslot_owners[index] = owner;
         *out_keyslot                = keyslot;
@@ -174,10 +180,11 @@ namespace ams::spl {
     Result SecureMonitorManager::TestAesKeySlot(s32 *out_index, s32 keyslot, const void *owner) {
         /* Validate the keyslot (and get the index). */
         s32 index;
-        R_TRY(impl::TestAesKeySlot(std::addressof(index), keyslot));
+        bool virt;
+        R_TRY(impl::TestAesKeySlot(std::addressof(index), std::addressof(virt), keyslot));
 
-        /* Check that the keyslot is owned by the request maker. */
-        R_UNLESS(m_aes_keyslot_owners[index] == owner, spl::ResultInvalidKeySlot());
+        /* Check that the keyslot is physical (for legacy compat) or owned by the request maker. */
+        R_UNLESS(!virt || m_aes_keyslot_owners[index] == owner, spl::ResultInvalidKeySlot());
 
         /* Set output index. */
         if (out_index != nullptr) {