| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "pthread_attr_setstack.h" |
| 10 | #include "pthread_attr_setstacksize.h" |
| 11 | |
| 12 | #include "src/__support/common.h" |
| 13 | #include "src/__support/threads/thread.h" // For STACK_ALIGNMENT |
| 14 | |
| 15 | #include <errno.h> |
| 16 | #include <pthread.h> |
| 17 | #include <stdint.h> |
| 18 | |
| 19 | namespace LIBC_NAMESPACE { |
| 20 | |
| 21 | LLVM_LIBC_FUNCTION(int, pthread_attr_setstack, |
| 22 | (pthread_attr_t *__restrict attr, void *stack, |
| 23 | size_t stacksize)) { |
| 24 | uintptr_t stackaddr = reinterpret_cast<uintptr_t>(stack); |
| 25 | // TODO: Do we need to check for overflow on stackaddr + stacksize? |
| 26 | if ((stackaddr % STACK_ALIGNMENT != 0) || |
| 27 | ((stackaddr + stacksize) % STACK_ALIGNMENT != 0)) |
| 28 | return EINVAL; |
| 29 | |
| 30 | if (stacksize < PTHREAD_STACK_MIN) |
| 31 | return EINVAL; |
| 32 | |
| 33 | attr->__stack = stack; |
| 34 | attr->__stacksize = stacksize; |
| 35 | return 0; |
| 36 | } |
| 37 | |
| 38 | } // namespace LIBC_NAMESPACE |
| 39 |