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/macros/config.h" 14 #include "src/__support/threads/thread.h" // For STACK_ALIGNMENT 15 #include "src/errno/libc_errno.h" 16 17 #include <pthread.h> 18 #include <stdint.h> 19 20 namespace LIBC_NAMESPACE_DECL { 21 22 LLVM_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_DECL 40