/* * 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); }