1 //===-- Wrapper for C standard stdlib.h declarations on the GPU -----------===// 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 #ifndef __CLANG_LLVM_LIBC_WRAPPERS_STDLIB_H__ 10 #define __CLANG_LLVM_LIBC_WRAPPERS_STDLIB_H__ 11 12 #if !defined(_OPENMP) && !defined(__HIP__) && !defined(__CUDA__) 13 #error "This file is for GPU offloading compilation only" 14 #endif 15 16 #include_next <stdlib.h> 17 18 #if __has_include(<llvm-libc-decls/stdlib.h>) 19 20 #if defined(__HIP__) || defined(__CUDA__) 21 #define __LIBC_ATTRS __attribute__((device)) 22 #endif 23 24 #pragma omp begin declare target 25 26 // The LLVM C library uses this type so we forward declare it. 27 typedef void (*__atexithandler_t)(void); 28 29 // Enforce ABI compatibility with the structs used by the LLVM C library. 30 _Static_assert(__builtin_offsetof(div_t, quot) == 0, "ABI mismatch!"); 31 _Static_assert(__builtin_offsetof(ldiv_t, quot) == 0, "ABI mismatch!"); 32 _Static_assert(__builtin_offsetof(lldiv_t, quot) == 0, "ABI mismatch!"); 33 34 #include <llvm-libc-decls/stdlib.h> 35 36 #pragma omp end declare target 37 38 #undef __LIBC_ATTRS 39 40 #endif 41 42 #endif // __CLANG_LLVM_LIBC_WRAPPERS_STDLIB_H__ 43