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Diffstat (limited to 'src/core/lib/gpr/wrap_memcpy.cc')
-rw-r--r-- | src/core/lib/gpr/wrap_memcpy.cc | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/core/lib/gpr/wrap_memcpy.cc b/src/core/lib/gpr/wrap_memcpy.cc new file mode 100644 index 0000000000..9b8608e056 --- /dev/null +++ b/src/core/lib/gpr/wrap_memcpy.cc @@ -0,0 +1,42 @@ +/* + * + * Copyright 2016 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#include <grpc/support/port_platform.h> + +#include <string.h> + +/* Provide a wrapped memcpy for targets that need to be backwards + * compatible with older libc's. + * + * Enable by setting LDFLAGS=-Wl,-wrap,memcpy when linking. + */ + +extern "C" { +#ifdef __linux__ +#if defined(__x86_64__) && !defined(GPR_MUSL_LIBC_COMPAT) +__asm__(".symver memcpy,memcpy@GLIBC_2.2.5"); +void* __wrap_memcpy(void* destination, const void* source, size_t num) { + return memcpy(destination, source, num); +} +#else /* !__x86_64__ */ +void* __wrap_memcpy(void* destination, const void* source, size_t num) { + return memmove(destination, source, num); +} +#endif +#endif +} |