osdbg: implement thread info api

libraries/libstratosphere/include/stratosphere.hpp

@@ -71,6 +71,7 @@
 #include <stratosphere/nim.hpp>
 #include <stratosphere/ns.hpp>
 #include <stratosphere/nsd.hpp>
+#include <stratosphere/osdbg.hpp>
 #include <stratosphere/patcher.hpp>
 #include <stratosphere/pcv.hpp>
 #include <stratosphere/pgl.hpp>

libraries/libstratosphere/include/stratosphere/os/os_thread_types.hpp

@@ -36,6 +36,8 @@ namespace ams::os {
     using ThreadImpl = ::Thread;
 
     struct ThreadType {
+        static constexpr u16 Magic = 0xF5A5;
+
         enum State {
             State_NotInitialized         = 0,
             State_Initialized            = 1,
@@ -49,7 +51,9 @@ namespace ams::os {
         uintptr_t reserved[4];
         u8 state;
         u8 suspend_count;
-        s32 base_priority;
+        u16 magic;
+        s16 base_priority;
+        u16 version;
         char name_buffer[ThreadNameLengthMax];
         const char *name_pointer;
         ThreadId thread_id;

libraries/libstratosphere/include/stratosphere/osdbg.hpp

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <stratosphere/osdbg/osdbg_thread.hpp>

libraries/libstratosphere/include/stratosphere/osdbg/osdbg_thread.hpp

@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <stratosphere/osdbg/osdbg_thread_types.hpp>
+#include <stratosphere/osdbg/osdbg_thread_api.hpp>

libraries/libstratosphere/include/stratosphere/osdbg/osdbg_thread_api.hpp

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/osdbg/osdbg_thread_api_impl.hpp>
+
+namespace ams::osdbg {
+
+    struct ThreadInfo;
+
+    Result InitializeThreadInfo(ThreadInfo *thread_info, svc::Handle debug_handle, const svc::DebugInfoCreateProcess *create_process, const svc::DebugInfoCreateThread *create_thread);
+    Result UpdateThreadInfo(ThreadInfo *thread_info);
+
+    Result GetThreadName(char *dst, const ThreadInfo *thread_info);
+
+}

libraries/libstratosphere/include/stratosphere/osdbg/osdbg_thread_api_impl.hpp

@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+#include <stratosphere/osdbg/osdbg_thread_types.hpp>
+
+namespace ams::osdbg {
+
+    constexpr inline s32 GetThreadPriority(const ThreadInfo *thread_info) {
+        return thread_info->_base_priority;
+    }
+
+    constexpr inline s32 GetThreadCurrentPriority(const ThreadInfo *thread_info) {
+        return thread_info->_current_priority;
+    }
+
+    constexpr inline size_t GetThreadStackSize(const ThreadInfo *thread_info) {
+        return thread_info->_stack_size;
+    }
+
+    constexpr inline uintptr_t GetThreadStackAddress(const ThreadInfo *thread_info) {
+        return thread_info->_stack;
+    }
+
+    constexpr inline uintptr_t GetThreadFunction(const ThreadInfo *thread_info) {
+        return thread_info->_function;
+    }
+
+    constexpr inline uintptr_t GetThreadFunctionArgument(const ThreadInfo *thread_info) {
+        return thread_info->_argument;
+    }
+
+    constexpr inline uintptr_t GetThreadNamePointer(const ThreadInfo *thread_info) {
+        return thread_info->_name_pointer;
+    }
+
+}

libraries/libstratosphere/include/stratosphere/osdbg/osdbg_thread_types.hpp

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::osdbg {
+
+    namespace impl {
+
+        union ThreadTypeCommon;
+
+    }
+
+    enum ThreadTypeType : u8 {
+        ThreadTypeType_Unknown = 0,
+        ThreadTypeType_Nintendo,
+        ThreadTypeType_Stratosphere,
+        ThreadTypeType_Libnx,
+    };
+
+    struct ThreadInfo {
+        s32 _base_priority;
+        s32 _current_priority;
+        size_t _stack_size;
+        uintptr_t _stack;
+        uintptr_t _argument;
+        uintptr_t _function;
+        uintptr_t _name_pointer;
+        impl::ThreadTypeCommon *_thread_type;
+        svc::Handle _debug_handle;
+        ThreadTypeType _thread_type_type;
+        svc::DebugInfoCreateProcess _debug_info_create_process;
+        svc::DebugInfoCreateThread _debug_info_create_thread;
+    };
+
+}

libraries/libstratosphere/source/os/impl/os_thread_manager.cpp

@@ -31,6 +31,8 @@ namespace ams::os::impl {
         util::ConstructAt(thread->waitlist);
 
         /* Set member variables. */
+        thread->magic          = os::ThreadType::Magic;
+        thread->version        = 0;
         thread->thread_impl    = (thread_impl != nullptr) ? thread_impl : std::addressof(thread->thread_impl_storage);
         thread->function       = function;
         thread->argument       = arg;
@@ -134,6 +136,7 @@ namespace ams::os::impl {
             util::DestroyAt(thread->waitlist);
 
             thread->name_buffer[0] = '\x00';
+            thread->magic = 0xCCCC;
 
             {
                 std::scoped_lock tlk(this->cs);

libraries/libstratosphere/source/osdbg/impl/osdbg_thread_info.os.horizon.cpp

@@ -0,0 +1,176 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+#include "osdbg_thread_info.os.horizon.hpp"
+#include "osdbg_thread_type.os.horizon.hpp"
+#include "osdbg_thread_local_region.os.horizon.hpp"
+#include "../../os/impl/os_thread_manager_impl.os.horizon.hpp"
+
+namespace ams::osdbg::impl {
+
+    namespace {
+
+        s32 ConvertToUserPriority(s32 horizon_priority) {
+            return horizon_priority - os::impl::UserThreadPriorityOffset;
+        }
+
+        s32 GetCurrentThreadPriorityImpl(const ThreadInfo *info) {
+            u64 dummy;
+            u32 horizon_priority;
+            if (R_FAILED(svc::GetDebugThreadParam(std::addressof(dummy), std::addressof(horizon_priority), info->_debug_handle, info->_debug_info_create_thread.thread_id, svc::DebugThreadParam_Priority))) {
+                return info->_base_priority;
+            }
+
+            return ConvertToUserPriority(static_cast<s32>(horizon_priority));
+        }
+
+        void FillWithCurrentInfoImpl(ThreadInfo *info, const auto &thread_type_impl) {
+            /* Set fields. */
+            info->_base_priority    = thread_type_impl._base_priority;
+            info->_current_priority = GetCurrentThreadPriorityImpl(info);
+            info->_stack_size       = thread_type_impl._stack_size;
+            info->_stack            = thread_type_impl._stack;
+            info->_argument         = thread_type_impl._argument;
+            info->_function         = thread_type_impl._thread_function;
+            info->_name_pointer     = thread_type_impl._name_pointer;
+        }
+
+    }
+
+    Result ThreadInfoHorizonImpl::FillWithCurrentInfo(ThreadInfo *info) {
+        /* Detect lp64. */
+        const bool is_lp64 = IsLp64(info);
+
+        /* Ensure that we have a thread type. */
+        if (info->_thread_type == nullptr) {
+            /* Ensure we exit with correct thread type. */
+            auto thread_guard = SCOPE_GUARD { info->_thread_type = nullptr; };
+
+            /* Set the target thread type. */
+            GetTargetThreadType(info);
+
+            /* If it's still nullptr, we failed to get the thread type. */
+            R_UNLESS(info->_thread_type != nullptr, osdbg::ResultCannotGetThreadInfo());
+
+            /* Check that the thread type is valid. */
+            R_UNLESS(info->_thread_type_type != ThreadTypeType_Unknown, osdbg::ResultUnsupportedThreadVersion());
+
+            /* We successfully got the thread type. */
+            thread_guard.Cancel();
+        }
+
+        /* Read and process the thread type. */
+        ThreadTypeCommon thread_type;
+
+        switch (info->_thread_type_type) {
+            case ThreadTypeType_Nintendo:
+                if (is_lp64) {
+                    /* Read in the thread type. */
+                    R_TRY(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(thread_type.lp64)), info->_debug_handle, reinterpret_cast<uintptr_t>(info->_thread_type), sizeof(thread_type.lp64)));
+
+                    /* Process different versions. */
+                    switch (thread_type.lp64._version) {
+                        case 0x0000:
+                        case 0xFFFF:
+                            FillWithCurrentInfoImpl(info, thread_type.lp64_v0);
+                            break;
+                        case 0x0001:
+                            FillWithCurrentInfoImpl(info, thread_type.lp64);
+                            break;
+                        default:
+                            return osdbg::ResultUnsupportedThreadVersion();
+                    }
+                } else {
+                    /* Read in the thread type. */
+                    R_TRY(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(thread_type.ilp32)), info->_debug_handle, reinterpret_cast<uintptr_t>(info->_thread_type), sizeof(thread_type.ilp32)));
+
+                    /* Process different versions. */
+                    switch (thread_type.ilp32._version) {
+                        case 0x0000:
+                        case 0xFFFF:
+                            FillWithCurrentInfoImpl(info, thread_type.ilp32_v0);
+                            break;
+                        case 0x0001:
+                            FillWithCurrentInfoImpl(info, thread_type.ilp32);
+                            break;
+                        default:
+                            return osdbg::ResultUnsupportedThreadVersion();
+                    }
+                }
+                break;
+            case ThreadTypeType_Stratosphere:
+                {
+                    /* Read in the thread type. */
+                    R_TRY(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(thread_type.stratosphere)), info->_debug_handle, reinterpret_cast<uintptr_t>(info->_thread_type), sizeof(thread_type.stratosphere)));
+
+                    /* Set fields. */
+                    const auto &thread_type_impl = thread_type.stratosphere;
+
+                    /* Check that our thread version is valid. */
+                    R_UNLESS(thread_type_impl.version == 0x0000 || thread_type_impl.version == 0xFFFF, osdbg::ResultUnsupportedThreadVersion());
+
+                    info->_base_priority    = thread_type_impl.base_priority;
+                    info->_current_priority = GetCurrentThreadPriorityImpl(info);
+                    info->_stack_size       = thread_type_impl.stack_size;
+                    info->_stack            = reinterpret_cast<uintptr_t>(thread_type_impl.stack);
+                    info->_argument         = reinterpret_cast<uintptr_t>(thread_type_impl.argument);
+                    info->_function         = reinterpret_cast<uintptr_t>(thread_type_impl.function);
+                    info->_name_pointer     = reinterpret_cast<uintptr_t>(thread_type_impl.name_pointer);
+                }
+                break;
+            case ThreadTypeType_Libnx:
+                {
+                    /* Read in the thread type. */
+                    R_TRY(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(thread_type.libnx)), info->_debug_handle, reinterpret_cast<uintptr_t>(info->_thread_type), sizeof(thread_type.libnx)));
+
+                    /* Set fields. */
+                    const auto &thread_type_impl = thread_type.libnx;
+
+                    /* NOTE: libnx does not store/track base priority anywhere. */
+                    info->_base_priority    = -1;
+                    info->_current_priority = GetCurrentThreadPriorityImpl(info);
+                    if (info->_current_priority != info->_base_priority) {
+                        info->_base_priority = info->_current_priority;
+                    }
+                    info->_stack_size       = thread_type_impl.stack_sz;
+                    info->_stack            = reinterpret_cast<uintptr_t>(thread_type_impl.stack_mirror);
+
+                    /* Parse thread entry args. */
+                    {
+                        LibnxThreadEntryArgs thread_entry_args;
+
+                        if (R_SUCCEEDED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(thread_entry_args)), info->_debug_handle, info->_stack + info->_stack_size, sizeof(LibnxThreadEntryArgs)))) {
+                            info->_argument = thread_entry_args.arg;
+                            info->_function = thread_entry_args.entry;
+                        } else {
+                            /* Failed to read the argument/function. */
+                            info->_argument = 0;
+                            info->_function = 0;
+                        }
+                    }
+
+                    /* Libnx threads don't have names. */
+                    info->_name_pointer     = 0;
+                }
+                break;
+            default:
+                return osdbg::ResultUnsupportedThreadVersion();
+        }
+
+        return ResultSuccess();
+    }
+
+}

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

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+#include "osdbg_types.hpp"
+
+namespace ams::osdbg::impl {
+
+    class ThreadInfoHorizonImpl {
+        public:
+            static Result FillWithCurrentInfo(ThreadInfo *info);
+    };
+
+    using ThreadInfoImpl = ThreadInfoHorizonImpl;
+
+    constexpr inline bool IsLp64(const ThreadInfo *info) {
+        const auto as = info->_debug_info_create_process.flags & svc::CreateProcessFlag_AddressSpaceMask;
+        return as == svc::CreateProcessFlag_AddressSpace64Bit || as == svc::CreateProcessFlag_AddressSpace64BitDeprecated;
+    }
+
+    constexpr inline bool Is64BitArch(const ThreadInfo *info) {
+        return (info->_debug_info_create_process.flags & svc::CreateProcessFlag_Is64Bit);
+    }
+
+}

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

@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+#include "osdbg_thread_info.os.horizon.hpp"
+#include "osdbg_thread_type.os.horizon.hpp"
+#include "osdbg_thread_local_region.os.horizon.hpp"
+
+namespace ams::osdbg::impl {
+
+    namespace {
+
+        Result GetThreadTypePointerFromThreadLocalRegion(uintptr_t *out, ThreadInfo *info) {
+            /* Detect lp64. */
+            const bool is_lp64 = IsLp64(info);
+
+            /* Get the thread local region. */
+            const auto *tlr_address = GetTargetThreadLocalRegion(info);
+
+            /* Read the thread local region. */
+            ThreadLocalRegionCommon tlr;
+            R_TRY(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(tlr)), info->_debug_handle, reinterpret_cast<uintptr_t>(tlr_address), sizeof(tlr)));
+
+            /* Detect libnx vs nintendo via magic number. */
+            if (tlr.libnx.thread_vars.magic == LibnxThreadVars::Magic) {
+                info->_thread_type_type = ThreadTypeType_Libnx;
+                *out = reinterpret_cast<uintptr_t>(tlr.libnx.thread_vars.thread_ptr);
+            } else {
+                info->_thread_type_type = ThreadTypeType_Nintendo;
+                *out = is_lp64 ? tlr.lp64.p_thread_type : tlr.ilp32.p_thread_type;
+            }
+
+            return ResultSuccess();
+        }
+
+        Result GetThreadArgumentAndStackPointer(u64 *out_arg, u64 *out_sp, ThreadInfo *info) {
+            /* Read the thread context. */
+            svc::ThreadContext thread_context;
+            R_TRY(svc::GetDebugThreadContext(std::addressof(thread_context), info->_debug_handle, info->_debug_info_create_thread.thread_id, svc::ThreadContextFlag_General | svc::ThreadContextFlag_Control));
+
+            /* Argument is in r0. */
+            *out_arg = thread_context.r[0];
+
+            /* Stack pointer varies by architecture. */
+            if (Is64BitArch(info)) {
+                *out_sp = thread_context.sp;
+            } else {
+                *out_sp = thread_context.r[13];
+            }
+
+            return ResultSuccess();
+        }
+
+        void DetectStratosphereThread(ThreadInfo *info) {
+            /* Stratosphere threads are initially misdetected as libnx threads. */
+            if (info->_thread_type_type != ThreadTypeType_Libnx || info->_thread_type == nullptr) {
+                return;
+            }
+
+            /* Convert to a parent pointer. */
+            os::ThreadType *stratosphere_ptr = util::GetParentPointer<&os::ThreadType::thread_impl_storage>(std::addressof(info->_thread_type->libnx));
+
+            /* Read the magic. */
+            u16 magic;
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(magic)), info->_debug_handle, reinterpret_cast<uintptr_t>(std::addressof(stratosphere_ptr->magic)), sizeof(magic)))) {
+                return;
+            }
+
+            /* Check the magic. */
+            if (magic == os::ThreadType::Magic) {
+                info->_thread_type_type = ThreadTypeType_Stratosphere;
+                info->_thread_type      = reinterpret_cast<ThreadTypeCommon *>(stratosphere_ptr);
+            }
+        }
+
+    }
+
+    void GetTargetThreadType(ThreadInfo *info) {
+        /* Ensure we exit with correct state. */
+        auto type_guard = SCOPE_GUARD {
+            info->_thread_type      = nullptr;
+            info->_thread_type_type = ThreadTypeType_Unknown;
+        };
+
+        /* Read the thread type pointer. */
+        uintptr_t tlr_thread_type;
+        if (R_FAILED(GetThreadTypePointerFromThreadLocalRegion(std::addressof(tlr_thread_type), info))) {
+            return;
+        }
+
+        /* Handle the case where we have a thread type. */
+        if (tlr_thread_type != 0) {
+            info->_thread_type = reinterpret_cast<ThreadTypeCommon *>(tlr_thread_type);
+            DetectStratosphereThread(info);
+            type_guard.Cancel();
+            return;
+        }
+
+        /* Otherwise, the thread is just created, and we should read its context. */
+        u64 arg, sp;
+        if (R_FAILED(GetThreadArgumentAndStackPointer(std::addressof(arg), std::addressof(sp), info))) {
+            return;
+        }
+
+        /* We may have been bamboozled into thinking a nintendo thread was a libnx thread, so check that. */
+        /* Nintendo threads have argument=ThreadType, libnx threads have argument=ThreadEntryArgs. */
+        if (info->_thread_type_type == ThreadTypeType_Nintendo && sp == arg) {
+            /* It's a libnx thread, so we should parse the entry args. */
+            info->_thread_type_type = ThreadTypeType_Libnx;
+
+            /* Read the entry args. */
+            LibnxThreadEntryArgs entry_args;
+            if (R_FAILED(svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(std::addressof(entry_args)), info->_debug_handle, arg, sizeof(entry_args)))) {
+                return;
+            }
+
+            info->_thread_type      = reinterpret_cast<ThreadTypeCommon *>(entry_args.t);
+        } else {
+            info->_thread_type_type = ThreadTypeType_Nintendo;
+            info->_thread_type      = reinterpret_cast<ThreadTypeCommon *>(arg);
+        }
+
+        /* If we got the thread type, we don't need to reset our state. */
+        if (info->_thread_type != nullptr) {
+            type_guard.Cancel();
+            DetectStratosphereThread(info);
+        }
+    }
+
+}

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

@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+#include "osdbg_types.hpp"
+
+namespace ams::osdbg::impl {
+
+    struct ThreadLocalRegionLp64 {
+        u32 message_buffer[0x100 / sizeof(u32)];
+        volatile u16 disable_counter;
+        volatile u16 interrupt_flag;
+        u32 reserved0;
+        u64 reserved[15];
+        u64 tls[10];
+        u64 locale_ptr;
+        s64 _errno_val;
+        u64 thread_data;
+        u64 eh_globals;
+        u64 thread_pointer;
+        u64 p_thread_type;
+    };
+    static_assert(sizeof(ThreadLocalRegionLp64) == sizeof(svc::ThreadLocalRegion));
+    static_assert(__builtin_offsetof(ThreadLocalRegionLp64, tls) == 0x180);
+
+
+    struct ThreadLocalRegionIlp32 {
+        u32 message_buffer[0x100 / sizeof(u32)];
+        volatile u16 disable_counter;
+        volatile u16 interrupt_flag;
+        u32 reserved[(0xC0 - 0x4) / sizeof(u32)];
+        u32 tls[10];
+        u32 locale_ptr;
+        s32 _errno_val;
+        u32 thread_data;
+        u32 eh_globals;
+        u32 thread_pointer;
+        u32 p_thread_type;
+    };
+    static_assert(sizeof(ThreadLocalRegionIlp32) == sizeof(svc::ThreadLocalRegion));
+    static_assert(__builtin_offsetof(ThreadLocalRegionIlp32, tls) == 0x1C0);
+
+    struct LibnxThreadVars {
+        static constexpr u32 Magic = util::FourCC<'!','T','V','$'>::Code;
+
+        u32 magic;
+        ::Handle handle;
+        ::Thread *thread_ptr;
+        void *reent;
+        void *tls_tp;
+    };
+    static_assert(sizeof(LibnxThreadVars) == 0x20);
+
+    struct ThreadLocalRegionLibnx {
+        u32 message_buffer[0x100 / sizeof(u32)];
+        volatile u16 disable_counter;
+        volatile u16 interrupt_flag;
+        u32 reserved0;
+        u64 tls[(0x1E0 - 0x108) / sizeof(u64)];
+        LibnxThreadVars thread_vars;
+    };
+    static_assert(sizeof(ThreadLocalRegionLibnx) == sizeof(svc::ThreadLocalRegion));
+    static_assert(__builtin_offsetof(ThreadLocalRegionLibnx, thread_vars) == 0x1E0);
+
+    struct LibnxThreadEntryArgs {
+        u64 t;
+        u64 entry;
+        u64 arg;
+        u64 reent;
+        u64 tls;
+        u64 padding;
+    };
+
+    union ThreadLocalRegionCommon {
+        ThreadLocalRegionIlp32 ilp32;
+        ThreadLocalRegionLp64 lp64;
+        ThreadLocalRegionLibnx libnx;
+    };
+    static_assert(sizeof(ThreadLocalRegionCommon) == sizeof(svc::ThreadLocalRegion));
+
+    inline ThreadLocalRegionCommon *GetTargetThreadLocalRegion(ThreadInfo *info) {
+        return reinterpret_cast<ThreadLocalRegionCommon *>(info->_debug_info_create_thread.tls_address);
+    }
+
+    void GetTargetThreadType(ThreadInfo *info);
+
+}

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

@@ -0,0 +1,149 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+#include "osdbg_types.hpp"
+
+namespace ams::osdbg::impl {
+
+    /* Check that our values are the same as Nintendo's. */
+    static_assert(os::TlsSlotCountMax == 16);
+    static_assert(os::SdkTlsSlotCountMax == 16);
+    static_assert(os::ThreadNameLengthMax == 32);
+
+    struct ThreadTypeIlp32 {
+        AlignedStorageIlp32<0, 2, alignof(u32)> _all_threads_node;
+        AlignedStorageIlp32<0, 2, alignof(u32)> _waitable_object_list;
+        u32 _padding[4];
+        u8 _state;
+        bool _stack_is_aliased;
+        bool _auto_registered;
+        u8 _suspend_count;
+        s16 _base_priority;
+        u16 _version;
+        u32 _original_stack;
+        u32 _stack;
+        u32 _stack_size;
+        u32 _argument;
+        u32 _thread_function;
+        u32 _current_fiber;
+        u32 _initial_fiber;
+        u32 _tls_value_array[os::TlsSlotCountMax + os::SdkTlsSlotCountMax];
+        char _name_buffer[os::ThreadNameLengthMax];
+        u32 _name_pointer;
+        AlignedStorageIlp32<4, 0, alignof(u32)> _cs_thread;
+        AlignedStorageIlp32<4, 0, alignof(u32)> _cv_thread;
+        AlignedStorageIlp32<4, 0, alignof(u32)> _handle;
+        u32 _lock_history;
+        u32 _thread_id_low;
+        u32 _thread_id_high;
+    };
+    static_assert(sizeof(ThreadTypeIlp32) == 0x100);
+
+    struct ThreadTypeIlp32Version0 {
+        AlignedStorageIlp32<0, 2, alignof(u32)> _all_threads_node;
+        AlignedStorageIlp32<0, 2, alignof(u32)> _waitable_object_list;
+        u32 _padding[4];
+        u8 _state;
+        bool _stack_is_aliased;
+        bool _auto_registered;
+        u8 _padding1;
+        s32 _base_priority;
+        u32 _original_stack;
+        u32 _stack;
+        u32 _stack_size;
+        u32 _argument;
+        u32 _thread_function;
+        u32 _current_fiber;
+        u32 _initial_fiber;
+        u32 _lock_history;
+        u32 _tls_value_array[os::TlsSlotCountMax + os::SdkTlsSlotCountMax];
+        char _name_buffer[os::ThreadNameLengthMax];
+        u32 _name_pointer;
+        AlignedStorageIlp32<4, 0, alignof(u32)> _cs_thread;
+        AlignedStorageIlp32<4, 0, alignof(u32)> _cv_thread;
+        AlignedStorageIlp32<4, 0, alignof(u32)> _handle;
+        char _padding2[8];
+    };
+    static_assert(sizeof(ThreadTypeIlp32Version0) == 0x100);
+
+    struct ThreadTypeLp64 {
+        AlignedStorageLp64<0, 2, alignof(u64)> _all_threads_node;
+        AlignedStorageLp64<0, 2, alignof(u64)> _waitable_object_list;
+        u64 _padding[4];
+        u8 _state;
+        bool _stack_is_aliased;
+        bool _auto_registered;
+        u8 _suspend_count;
+        s16 _base_priority;
+        u16 _version;
+        u64 _original_stack;
+        u64 _stack;
+        u64 _stack_size;
+        u64 _argument;
+        u64 _thread_function;
+        u64 _current_fiber;
+        u64 _initial_fiber;
+        u64 _tls_value_array[os::TlsSlotCountMax + os::SdkTlsSlotCountMax];
+        char _name_buffer[os::ThreadNameLengthMax];
+        u64 _name_pointer;
+        AlignedStorageLp64<4, 0, alignof(u32)> _cs_thread;
+        AlignedStorageLp64<4, 0, alignof(u32)> _cv_thread;
+        AlignedStorageLp64<4, 0, alignof(u32)> _handle;
+        u32 _lock_history;
+        u64 thread_id;
+    };
+    static_assert(sizeof(ThreadTypeLp64) == 0x1C0);
+
+    struct ThreadTypeLp64Version0 {
+        AlignedStorageLp64<0, 2, alignof(u64)> _all_threads_node;
+        AlignedStorageLp64<0, 2, alignof(u64)> _waitable_object_list;
+        u64 _padding[4];
+        u8 _state;
+        bool _stack_is_aliased;
+        bool _auto_registered;
+        u8 _suspend_count;
+        s16 _base_priority;
+        u16 _version;
+        u64 _original_stack;
+        u64 _stack;
+        u64 _stack_size;
+        u64 _argument;
+        u64 _thread_function;
+        u64 _current_fiber;
+        u64 _initial_fiber;
+        u32 _lock_history;
+        u32 _padding2;
+        u64 _tls_value_array[os::TlsSlotCountMax + os::SdkTlsSlotCountMax];
+        char _name_buffer[os::ThreadNameLengthMax];
+        u64 _name_pointer;
+        AlignedStorageLp64<4, 0, alignof(u32)> _cs_thread;
+        AlignedStorageLp64<4, 0, alignof(u32)> _cv_thread;
+        AlignedStorageLp64<4, 0, alignof(u32)> _handle;
+        u32 _padding3;
+    };
+    static_assert(sizeof(ThreadTypeLp64Version0) == 0x1C0);
+
+    union ThreadTypeCommon {
+        ThreadTypeIlp32 ilp32;
+        ThreadTypeLp64 lp64;
+        ThreadTypeIlp32Version0 ilp32_v0;
+        ThreadTypeLp64Version0 lp64_v0;
+        os::ThreadType stratosphere;
+        ::Thread libnx;
+    };
+
+}

libraries/libstratosphere/source/osdbg/impl/osdbg_types.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <stratosphere.hpp>
+
+namespace ams::osdbg::impl {
+
+    template<size_t Size, int NumPointers, size_t Alignment>
+    using AlignedStorageIlp32 = typename std::aligned_storage<Size + NumPointers * sizeof(u32), Alignment>::type;
+
+    template<size_t Size, int NumPointers, size_t Alignment>
+    using AlignedStorageLp64 = typename std::aligned_storage<Size + NumPointers * sizeof(u64), Alignment>::type;
+
+}

libraries/libstratosphere/source/osdbg/osdbg_thread.cpp

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <stratosphere.hpp>
+
+#if defined(ATMOSPHERE_OS_HORIZON)
+    #include "impl/osdbg_thread_info.os.horizon.hpp"
+#else
+    #error "Unknown OS for ams::osdbg::ThreadInfo"
+#endif
+
+namespace ams::osdbg {
+
+    Result InitializeThreadInfo(ThreadInfo *thread_info, svc::Handle debug_handle, const svc::DebugInfoCreateProcess *create_process, const svc::DebugInfoCreateThread *create_thread) {
+        /* Set basic fields. */
+        thread_info->_thread_type               = nullptr;
+        thread_info->_thread_type_type          = ThreadTypeType_Unknown;
+        thread_info->_debug_handle              = debug_handle;
+        thread_info->_debug_info_create_process = *create_process;
+        thread_info->_debug_info_create_thread  = *create_thread;
+
+        /* Update the current info. */
+        return impl::ThreadInfoImpl::FillWithCurrentInfo(thread_info);
+    }
+
+    Result UpdateThreadInfo(ThreadInfo *thread_info) {
+        /* Update the current info. */
+        return impl::ThreadInfoImpl::FillWithCurrentInfo(thread_info);
+    }
+
+    Result GetThreadName(char *dst, const ThreadInfo *thread_info) {
+        /* Get the name pointer. */
+        const auto name_pointer = GetThreadNamePointer(thread_info);
+
+        /* Read the name. */
+        if (name_pointer != 0) {
+            return svc::ReadDebugProcessMemory(reinterpret_cast<uintptr_t>(dst), thread_info->_debug_handle, name_pointer, os::ThreadNameLengthMax);
+        } 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));
+            } else {
+                util::TSNPrintf(dst, os::ThreadNameLengthMax, "Thread_0x%p", reinterpret_cast<void *>(thread_info->_thread_type));
+            }
+
+            return ResultSuccess();
+        }
+    }
+
+}

libraries/libvapours/include/vapours/results.hpp

@@ -49,6 +49,7 @@
 #include <vapours/results/nim_results.hpp>
 #include <vapours/results/ns_results.hpp>
 #include <vapours/results/os_results.hpp>
+#include <vapours/results/osdbg_results.hpp>
 #include <vapours/results/pcv_results.hpp>
 #include <vapours/results/pgl_results.hpp>
 #include <vapours/results/pm_results.hpp>

libraries/libvapours/include/vapours/results/osdbg_results.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+#include <vapours/results/results_common.hpp>
+
+namespace ams::osdbg {
+
+    R_DEFINE_NAMESPACE_RESULT_MODULE(7);
+
+    R_DEFINE_ERROR_RESULT(CannotGetThreadInfo,      1);
+    R_DEFINE_ERROR_RESULT(UnsupportedThreadVersion, 2);
+
+}

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

@@ -121,7 +121,7 @@ namespace ams::svc {
         struct DebugInfoCreateThread {
             u64 thread_id;
             u32 tls_address;
-            u32 entrypoint;
+            /* Removed in 11.0.0 u32 entrypoint; */
         };
 
         struct DebugInfoExitProcess {

stratosphere/creport/source/creport_threads.cpp

@@ -152,13 +152,22 @@ namespace ams::creport {
                 std::memcpy(this->tls, thread_tls, sizeof(this->tls));
                 /* Try to detect libnx threads, and skip name parsing then. */
                 if (*(reinterpret_cast<u32 *>(&thread_tls[0x1E0])) != LibnxThreadVarMagic) {
-                    u8 thread_type[0x1D0];
+                    u8 thread_type[0x1C0];
                     const u64 thread_type_addr = *(reinterpret_cast<u64 *>(&thread_tls[0x1F8]));
                     if (R_SUCCEEDED(svcReadDebugProcessMemory(thread_type, debug_handle, thread_type_addr, sizeof(thread_type)))) {
-                        /* Check thread name is actually at thread name. */
-                        static_assert(0x1A8 - 0x188 == NameLengthMax, "NameLengthMax definition!");
-                        if (*(reinterpret_cast<u64 *>(&thread_type[0x1A8])) == thread_type_addr + 0x188) {
-                            std::memcpy(this->name, thread_type + 0x188, NameLengthMax);
+                        /* Get the thread version. */
+                        const u16 thread_version = *reinterpret_cast<u16 *>(&thread_type[0x46]);
+                        if (thread_version == 0 || thread_version == 0xFFFF) {
+                            /* Check thread name is actually at thread name. */
+                            static_assert(0x1A8 - 0x188 == NameLengthMax, "NameLengthMax definition!");
+                            if (*(reinterpret_cast<u64 *>(&thread_type[0x1A8])) == thread_type_addr + 0x188) {
+                                std::memcpy(this->name, thread_type + 0x188, NameLengthMax);
+                            }
+                        } else if (thread_version == 1) {
+                            static_assert(0x1A0 - 0x180 == NameLengthMax, "NameLengthMax definition!");
+                            if (*(reinterpret_cast<u64 *>(&thread_type[0x1A0])) == thread_type_addr + 0x180) {
+                                std::memcpy(this->name, thread_type + 0x180, NameLengthMax);
+                            }
                         }
                     }
                 }