From 7456a77ba9ccfc82c448fabbc7c6d615e4337143 Mon Sep 17 00:00:00 2001
From: Michael Scire <SciresM@gmail.com>
Date: Thu, 10 Mar 2022 13:24:15 -0800
Subject: [PATCH] os: add working stack logic for macOS

---
 .../diag/impl/diag_symbol_impl.os.macos.cpp   | 33 +++++++++++++++++++
 .../source/os/impl/os_debug_impl.os.macos.hpp | 21 +++++-------
 2 files changed, 41 insertions(+), 13 deletions(-)
 create mode 100644 libraries/libstratosphere/source/diag/impl/diag_symbol_impl.os.macos.cpp

diff --git a/libraries/libstratosphere/source/diag/impl/diag_symbol_impl.os.macos.cpp b/libraries/libstratosphere/source/diag/impl/diag_symbol_impl.os.macos.cpp
new file mode 100644
index 000000000..a0f1f9848
--- /dev/null
+++ b/libraries/libstratosphere/source/diag/impl/diag_symbol_impl.os.macos.cpp
@@ -0,0 +1,33 @@
+/*
+ * 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 "diag_symbol_impl.hpp"
+
+namespace ams::diag::impl {
+
+    uintptr_t GetSymbolNameImpl(char *dst, size_t dst_size, uintptr_t address) {
+        /* TODO: How should we do this on macOS? */
+        AMS_UNUSED(dst, dst_size, address);
+        return 0;
+    }
+
+    size_t GetSymbolSizeImpl(uintptr_t address) {
+        /* TODO: How should we do this on macOS? */
+        AMS_UNUSED(address);
+        return 0;
+    }
+
+}
diff --git a/libraries/libstratosphere/source/os/impl/os_debug_impl.os.macos.hpp b/libraries/libstratosphere/source/os/impl/os_debug_impl.os.macos.hpp
index 637460a11..1bb7fa0fa 100644
--- a/libraries/libstratosphere/source/os/impl/os_debug_impl.os.macos.hpp
+++ b/libraries/libstratosphere/source/os/impl/os_debug_impl.os.macos.hpp
@@ -25,22 +25,17 @@ namespace ams::os::impl {
                 AMS_ASSERT(out_stack != nullptr);
                 AMS_ASSERT(out_size != nullptr);
 
-                /* Get the current stack by pthread */
-                pthread_attr_t attr;
-                pthread_attr_init(std::addressof(attr));
-                ON_SCOPE_EXIT { pthread_attr_destroy(std::addressof(attr)); };
+                /* Get the current pthread. */
+                const auto self = pthread_self();
 
-                const auto getattr_res = pthread_getattr_np(pthread_self(), std::addressof(attr));
-                AMS_ABORT_UNLESS(getattr_res == 0);
+                /* Get the thread stack. */
+                uintptr_t stack_bottom = reinterpret_cast<uintptr_t>(pthread_get_stackaddr_np(self));
+                size_t stack_size      = pthread_get_stacksize_np(self);
 
-                /* Get the thread satck. */
-                void *base = nullptr;
-                size_t size  = 0;
-                const auto getstack_res = pthread_getattr_np(pthread_self(), std::addressof(attr));
-                AMS_ABORT_UNLESS(getstack_res == 0);
+                uintptr_t stack_top    = stack_bottom - stack_size;
 
-                *out_stack = reinterpret_cast<uintptr_t>(base);
-                *out_size  = size;
+                *out_stack = stack_top;
+                *out_size  = stack_size;
             }
 
             static void QueryMemoryInfo(os::MemoryInfo *out) {