libc/src/string/memory_utils/inline_memcmp.h

   1 //===-- Implementation of memcmp ------------------------------------------===//
   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 LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_MEMCMP_H
  10 #define LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_MEMCMP_H
  11
  12 #include "src/__support/macros/config.h"                   // LIBC_INLINE
  13 #include "src/__support/macros/properties/architectures.h" // LIBC_TARGET_ARCH_IS_
  14 #include "src/string/memory_utils/utils.h"                 // Ptr, CPtr
  15
  16 #include <stddef.h> // size_t
  17
  18 #if defined(LIBC_TARGET_ARCH_IS_X86)
  19 #include "src/string/memory_utils/x86_64/inline_memcmp.h"
  20 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP inline_memcmp_x86
  21 #elif defined(LIBC_TARGET_ARCH_IS_AARCH64)
  22 #include "src/string/memory_utils/aarch64/inline_memcmp.h"
  23 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP inline_memcmp_aarch64
  24 #elif defined(LIBC_TARGET_ARCH_IS_ANY_RISCV)
  25 #include "src/string/memory_utils/riscv/inline_memcmp.h"
  26 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP inline_memcmp_riscv
  27 #elif defined(LIBC_TARGET_ARCH_IS_ARM) || defined(LIBC_TARGET_ARCH_IS_GPU)
  28 #include "src/string/memory_utils/generic/byte_per_byte.h"
  29 #define LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP inline_memcmp_byte_per_byte
  30 #else
  31 #error "Unsupported architecture"
  32 #endif
  33
  34 namespace LIBC_NAMESPACE {
  35
  36 LIBC_INLINE int inline_memcmp(const void *p1, const void *p2, size_t count) {
  37   return static_cast<int>(LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP(
  38       reinterpret_cast<CPtr>(p1), reinterpret_cast<CPtr>(p2), count));
  39 }
  40
  41 } // namespace LIBC_NAMESPACE
  42
  43 #undef LIBC_SRC_STRING_MEMORY_UTILS_MEMCMP
  44
  45 #endif // LLVM_LIBC_SRC_STRING_MEMORY_UTILS_INLINE_MEMCMP_H