98 lines
No EOL
2.8 KiB
C
98 lines
No EOL
2.8 KiB
C
/*********************************************************************************/
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/* Module Name: mman.c */
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/* Project: AurixOS */
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/* */
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/* Copyright (c) 2024-2025 Jozef Nagy */
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/* */
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/* This source is subject to the MIT License. */
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/* See License.txt in the root of this repository. */
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/* All other rights reserved. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
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/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
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/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
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/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
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/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
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/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */
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/* SOFTWARE. */
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/*********************************************************************************/
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#include <mem/mman.h>
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#include <print.h>
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#include <stddef.h>
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#ifndef AXBOOT_UEFI
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#warning "Memory management is not implemented yet, expect runtime errors."
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void *mem_alloc(size_t n)
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{
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(void)n;
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return NULL;
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}
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int mem_allocat(void *addr, size_t npages)
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{
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(void)addr;
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(void)npages;
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return 0;
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}
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void mem_free(void **addr)
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{
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(void)addr;
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}
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#else
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#include <efi.h>
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#include <efilib.h>
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void *mem_alloc(size_t n)
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{
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EFI_STATUS status;
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void *alloc = NULL;
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status = gBootServices->AllocatePool(EfiLoaderData, (EFI_UINTN)n, &alloc);
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if (EFI_ERROR(status)) {
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debug("mem_alloc(): Couldn't allocate %u bytes: %s (%lx)\n", n, efi_status_to_str(status), status);
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return NULL;
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}
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return alloc;
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}
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int mem_allocat(void *addr, size_t npages)
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{
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EFI_STATUS status;
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void *alloc;
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status = gBootServices->AllocatePages(AllocateAddress, EfiLoaderData, (EFI_UINTN)npages, addr);
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if (EFI_ERROR(status)) {
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debug("mem_allocat(): Couldn't allocate %u bytes at 0x%lx: %s (%lx)\n", npages, addr, efi_status_to_str(status), status);
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return 0;
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}
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return 1;
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}
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void mem_free(void **addr)
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{
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EFI_STATUS status;
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if (addr == NULL) {
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return;
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}
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status = gBootServices->FreePool(*addr);
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if (EFI_ERROR(status)) {
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debug("mem_free(): Couldn't free 0x%lx: %s (%lx)\n", *addr, efi_status_to_str(status), status);
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return;
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}
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*addr = NULL;
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}
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#endif |