1 //===-- Wrapper for C standard string.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_STRING_H__ 10 #define __CLANG_LLVM_LIBC_WRAPPERS_STRING_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 <string.h> 17 18 #if __has_include(<llvm-libc-decls/string.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 GNU headers provide C++ standard compliant headers when in C++ mode and 27 // the LLVM libc does not. We need to manually provide the definitions using the 28 // same prototypes. 29 #if defined(__cplusplus) && defined(__GLIBC__) && \ 30 defined(__CORRECT_ISO_CPP_STRING_H_PROTO) 31 32 #ifndef __LIBC_ATTRS 33 #define __LIBC_ATTRS 34 #endif 35 36 extern "C" { 37 void *memccpy(void *__restrict, const void *__restrict, int, 38 size_t) __LIBC_ATTRS; 39 int memcmp(const void *, const void *, size_t) __LIBC_ATTRS; 40 void *memcpy(void *__restrict, const void *__restrict, size_t) __LIBC_ATTRS; 41 void *memmem(const void *, size_t, const void *, size_t) __LIBC_ATTRS; 42 void *memmove(void *, const void *, size_t) __LIBC_ATTRS; 43 void *mempcpy(void *__restrict, const void *__restrict, size_t) __LIBC_ATTRS; 44 void *memset(void *, int, size_t) __LIBC_ATTRS; 45 char *stpcpy(char *__restrict, const char *__restrict) __LIBC_ATTRS; 46 char *stpncpy(char *__restrict, const char *__restrict, size_t) __LIBC_ATTRS; 47 char *strcat(char *__restrict, const char *__restrict) __LIBC_ATTRS; 48 int strcmp(const char *, const char *) __LIBC_ATTRS; 49 int strcoll(const char *, const char *) __LIBC_ATTRS; 50 char *strcpy(char *__restrict, const char *__restrict) __LIBC_ATTRS; 51 size_t strcspn(const char *, const char *) __LIBC_ATTRS; 52 char *strdup(const char *) __LIBC_ATTRS; 53 size_t strlen(const char *) __LIBC_ATTRS; 54 char *strncat(char *, const char *, size_t) __LIBC_ATTRS; 55 int strncmp(const char *, const char *, size_t) __LIBC_ATTRS; 56 char *strncpy(char *__restrict, const char *__restrict, size_t) __LIBC_ATTRS; 57 char *strndup(const char *, size_t) __LIBC_ATTRS; 58 size_t strnlen(const char *, size_t) __LIBC_ATTRS; 59 size_t strspn(const char *, const char *) __LIBC_ATTRS; 60 char *strtok(char *__restrict, const char *) __LIBC_ATTRS; 61 char *strtok_r(char *__restrict, const char *__restrict, 62 char **__restrict) __LIBC_ATTRS; 63 size_t strxfrm(char *__restrict, const char *__restrict, size_t) __LIBC_ATTRS; 64 } 65 66 extern "C++" { 67 char *strstr(char *, const char *) noexcept __LIBC_ATTRS; 68 const char *strstr(const char *, const char *) noexcept __LIBC_ATTRS; 69 char *strpbrk(char *, const char *) noexcept __LIBC_ATTRS; 70 const char *strpbrk(const char *, const char *) noexcept __LIBC_ATTRS; 71 char *strrchr(char *, int) noexcept __LIBC_ATTRS; 72 const char *strrchr(const char *, int) noexcept __LIBC_ATTRS; 73 char *strchr(char *, int) noexcept __LIBC_ATTRS; 74 const char *strchr(const char *, int) noexcept __LIBC_ATTRS; 75 char *strchrnul(char *, int) noexcept __LIBC_ATTRS; 76 const char *strchrnul(const char *, int) noexcept __LIBC_ATTRS; 77 char *strcasestr(char *, const char *) noexcept __LIBC_ATTRS; 78 const char *strcasestr(const char *, const char *) noexcept __LIBC_ATTRS; 79 void *memrchr(void *__s, int __c, size_t __n) noexcept __LIBC_ATTRS; 80 const void *memrchr(const void *__s, int __c, size_t __n) noexcept __LIBC_ATTRS; 81 void *memchr(void *__s, int __c, size_t __n) noexcept __LIBC_ATTRS; 82 const void *memchr(const void *__s, int __c, size_t __n) noexcept __LIBC_ATTRS; 83 } 84 85 #else 86 #include <llvm-libc-decls/string.h> 87 88 #endif 89 90 #pragma omp end declare target 91 92 #undef __LIBC_ATTRS 93 94 #endif 95 96 #endif // __CLANG_LLVM_LIBC_WRAPPERS_STRING_H__ 97