1 | //===------- LibC.cpp - Simple implementation of libc functions --- C++ ---===// |
---|---|
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 "LibC.h" |
10 | |
11 | #if defined(__AMDGPU__) && !defined(OMPTARGET_HAS_LIBC) |
12 | extern "C"int vprintf(const char *format, __builtin_va_list) { return -1; } |
13 | #else |
14 | extern "C"int vprintf(const char *format, __builtin_va_list); |
15 | #endif |
16 | |
17 | extern "C"{ |
18 | [[gnu::weak]] int memcmp(const void *lhs, const void *rhs, size_t count) { |
19 | auto *L = reinterpret_cast<const unsigned char *>(lhs); |
20 | auto *R = reinterpret_cast<const unsigned char *>(rhs); |
21 | |
22 | for (size_t I = 0; I < count; ++I) |
23 | if (L[I] != R[I]) |
24 | return (int)L[I] - (int)R[I]; |
25 | |
26 | return 0; |
27 | } |
28 | |
29 | [[gnu::weak]] void memset(void *dst, int C, size_t count) { |
30 | auto *dstc = reinterpret_cast<char *>(dst); |
31 | for (size_t I = 0; I < count; ++I) |
32 | dstc[I] = C; |
33 | } |
34 | |
35 | [[gnu::weak]] int printf(const char *Format, ...) { |
36 | __builtin_va_list vlist; |
37 | __builtin_va_start(vlist, Format); |
38 | return ::vprintf(format: Format, vlist); |
39 | } |
40 | } |
41 | |
42 | namespace ompx { |
43 | [[clang::no_builtin("printf")]] int printf(const char *Format, ...) { |
44 | __builtin_va_list vlist; |
45 | __builtin_va_start(vlist, Format); |
46 | return ::vprintf(format: Format, vlist); |
47 | } |
48 | } // namespace ompx |
49 |