src/runtime/unaligned.h

   1 /*
   2  * This software is part of the SBCL system. See the README file for
   3  * more information.
   4  *
   5  * This software is derived from the CMU CL system, which was
   6  * written at Carnegie Mellon University and released into the
   7  * public domain. The software is in the public domain and is
   8  * provided with absolutely no warranty. See the COPYING and CREDITS
   9  * files for more information.
  10  */
  11
  12 #ifndef _SBCL_UNALIGNED_H_
  13 #define _SBCL_UNALIGNED_H_
  14
  15 // For CPUs that can do unaligned memory operations, the C compiler
  16 // is generally smart enough to not actually do a memcpy()
  17 static inline uint32_t UNALIGNED_LOAD32(void* p) {
  18     uint32_t val;
  19     memcpy(&val, p, 4);
  20     return val;
  21 }
  22 static inline void UNALIGNED_STORE32(void* p, uint32_t val) {
  23     memcpy(p, &val, 4);
  24 }
  25 #ifdef LISP_FEATURE_64_BIT
  26 static inline void UNALIGNED_STORE64(void* p, uint64_t val) {
  27     memcpy(p, &val, 8);
  28 }
  29 #endif
  30
  31 #endif /* _SBCL_UNALIGNED_H_ */