40 lines · cpp
1//===-- Implementation of the pthread_attr_setstack -----------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "pthread_attr_setstack.h"10#include "pthread_attr_setstacksize.h"11 12#include "hdr/stdint_proxy.h"13#include "src/__support/common.h"14#include "src/__support/libc_errno.h"15#include "src/__support/macros/config.h"16#include "src/__support/threads/thread.h" // For STACK_ALIGNMENT17 18#include <pthread.h>19 20namespace LIBC_NAMESPACE_DECL {21 22LLVM_LIBC_FUNCTION(int, pthread_attr_setstack,23 (pthread_attr_t *__restrict attr, void *stack,24 size_t stacksize)) {25 uintptr_t stackaddr = reinterpret_cast<uintptr_t>(stack);26 // TODO: Do we need to check for overflow on stackaddr + stacksize?27 if ((stackaddr % STACK_ALIGNMENT != 0) ||28 ((stackaddr + stacksize) % STACK_ALIGNMENT != 0))29 return EINVAL;30 31 if (stacksize < PTHREAD_STACK_MIN)32 return EINVAL;33 34 attr->__stack = stack;35 attr->__stacksize = stacksize;36 return 0;37}38 39} // namespace LIBC_NAMESPACE_DECL40