60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
//===------- LibC.cpp - Simple implementation of libc functions --- C++ ---===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "LibC.h"
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#pragma omp begin declare target device_type(nohost)
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namespace impl {
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int32_t omp_vprintf(const char *Format, __builtin_va_list vlist);
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}
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#ifndef OMPTARGET_HAS_LIBC
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namespace impl {
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#pragma omp begin declare variant match( \
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device = {arch(nvptx, nvptx64)}, \
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implementation = {extension(match_any)})
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extern "C" int vprintf(const char *format, ...);
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int omp_vprintf(const char *Format, __builtin_va_list vlist) {
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return vprintf(Format, vlist);
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}
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#pragma omp end declare variant
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#pragma omp begin declare variant match(device = {arch(amdgcn)})
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int omp_vprintf(const char *Format, __builtin_va_list) { return -1; }
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#pragma omp end declare variant
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} // namespace impl
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extern "C" int printf(const char *Format, ...) {
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__builtin_va_list vlist;
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__builtin_va_start(vlist, Format);
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return impl::omp_vprintf(Format, vlist);
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}
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#endif // OMPTARGET_HAS_LIBC
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extern "C" {
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[[gnu::weak]] int memcmp(const void *lhs, const void *rhs, size_t count) {
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auto *L = reinterpret_cast<const unsigned char *>(lhs);
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auto *R = reinterpret_cast<const unsigned char *>(rhs);
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for (size_t I = 0; I < count; ++I)
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if (L[I] != R[I])
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return (int)L[I] - (int)R[I];
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return 0;
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}
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[[gnu::weak]] void memset(void *dst, int C, size_t count) {
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auto *dstc = reinterpret_cast<char *>(dst);
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for (size_t I = 0; I < count; ++I)
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dstc[I] = C;
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}
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}
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#pragma omp end declare target
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