Function alloc_mk_stack

loader/src/alloc_mk_stack.c:44–60

* <!-- description --> * @brief Allocates a chunk of memory for the stack used by the * microkernel. Note that the "size" parameter is in total pages and * not in bytes. If the provided size is 0, this function will allocate * a default number of pages. * * <!-- inputs/outputs --> * @param pmut_stack the span_t to store the stack addr/size. * @return LOADER_SUCCESS on suc

 *   @return LOADER_SUCCESS on success, LOADER_FAILURE on failure.
 */
NODISCARD int64_t
alloc_mk_stack(struct span_t *const pmut_stack) NOEXCEPT
{
    pmut_stack->size = HYPERVISOR_MK_STACK_SIZE;
    pmut_stack->addr = (uint8_t *)platform_alloc(pmut_stack->size);
    if (NULLPTR == pmut_stack->addr) {
        bferror("platform_alloc failed");
        goto platform_alloc_failed;
    }

    return LOADER_SUCCESS;

platform_alloc_failed:

    platform_memset(pmut_stack, ((uint8_t)0), sizeof(struct span_t));
    return LOADER_FAILURE;
}