strat: use ams::Main() instead of main(argc, argv)

libraries/libstratosphere/source/init/init_malloc.cpp

@@ -0,0 +1,147 @@
+/*
+ * 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>
+
+namespace ams::init {
+
+    namespace {
+
+        constinit void *g_malloc_region_address = nullptr;
+        constinit size_t g_malloc_region_size   = 0;
+
+        constinit util::TypedStorage<mem::StandardAllocator> g_malloc_allocator;
+
+    }
+
+    void InitializeAllocator(void *address, size_t size, bool cache_enabled) {
+        /* Check pre-conditions. */
+        AMS_ABORT_UNLESS(g_malloc_region_size == 0);
+        AMS_ABORT_UNLESS(size > 0);
+
+        /* Construct malloc allocator. */
+        util::ConstructAt(g_malloc_allocator);
+
+        /* Initialize allocator. */
+        util::GetReference(g_malloc_allocator).Initialize(address, size, cache_enabled);
+
+        /* Set malloc globals. */
+        g_malloc_region_address = address;
+        g_malloc_region_size    = size;
+    }
+
+    void InitializeAllocator(void *address, size_t size) {
+        return InitializeAllocator(address, size, false);
+    }
+
+    mem::StandardAllocator *GetAllocator() {
+        /* Check pre-conditions. */
+        AMS_ASSERT(g_malloc_region_size > 0);
+
+        return util::GetPointer(g_malloc_allocator);
+    }
+
+}
+
+extern "C" void *malloc(size_t size) {
+    /* We require that an allocator region exists. */
+    if (::ams::init::g_malloc_region_size == 0) {
+        return nullptr;
+    }
+
+    /* Try to allocate. */
+    void *ptr = ::ams::util::GetReference(::ams::init::g_malloc_allocator).Allocate(size);
+    if (ptr == nullptr) {
+        errno = ENOMEM;
+    }
+
+    return ptr;
+}
+
+extern "C" void free(void *ptr) {
+    /* We require that an allocator region exists. */
+    if (::ams::init::g_malloc_region_size == 0) {
+        return;
+    }
+
+    if (ptr != nullptr) {
+        ::ams::util::GetReference(::ams::init::g_malloc_allocator).Free(ptr);
+    }
+}
+
+extern "C" void *calloc(size_t num, size_t size) {
+    /* We require that an allocator region exists. */
+    if (::ams::init::g_malloc_region_size == 0) {
+        return nullptr;
+    }
+
+    /* Allocate the total needed space. */
+    const size_t total = num * size;
+    void *ptr = std::malloc(total);
+
+    /* Zero the memory if needed. */
+    if (ptr != nullptr) {
+        std::memset(ptr, 0, total);
+    } else {
+        errno = ENOMEM;
+    }
+
+    return ptr;
+}
+
+extern "C" void *realloc(void *ptr, size_t new_size) {
+    /* We require that an allocator region exists. */
+    if (::ams::init::g_malloc_region_size == 0) {
+        return nullptr;
+    }
+
+    /* Try to reallocate. */
+    void *r = ::ams::util::GetReference(::ams::init::g_malloc_allocator).Reallocate(ptr, new_size);
+    if (r == nullptr) {
+        errno = ENOMEM;
+    }
+
+    return r;
+}
+
+extern "C" void *aligned_alloc(size_t align, size_t size) {
+    /* We require that an allocator region exists. */
+    if (::ams::init::g_malloc_region_size == 0) {
+        return nullptr;
+    }
+
+    /* Try to allocate. */
+    void *ptr = ::ams::util::GetReference(::ams::init::g_malloc_allocator).Allocate(size, align);
+    if (ptr == nullptr) {
+        errno = ENOMEM;
+    }
+
+    return ptr;
+}
+
+extern "C" size_t malloc_usable_size(void *ptr) {
+    /* We require that an allocator region exists. */
+    if (::ams::init::g_malloc_region_size == 0) {
+        return 0;
+    }
+
+    /* Try to get the usable size. */
+    if (ptr == nullptr) {
+        errno = ENOMEM;
+        return 0;
+    }
+
+    return ::ams::util::GetReference(::ams::init::g_malloc_allocator).GetSizeOf(ptr);
+}