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Annotation of linux/include/asm/memory.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  *  NOTE!!! memcpy(dest,src,n) assumes ds=es=normal data segment. This
                      3:  *  goes for all kernel functions (ds=es=kernel space, fs=local data,
                      4:  *  gs=null), as well as for all well-behaving user programs (ds=es=
                      5:  *  user data space). This is NOT a bug, as any user program that changes
                      6:  *  es deserves to die if it isn't careful.
                      7:  */
                      8: #define memcpy(dest,src,n) ({ \
                      9: void * _res = dest; \
                     10: __asm__ ("cld;rep;movsb" \
                     11:        ::"D" ((long)(_res)),"S" ((long)(src)),"c" ((long) (n)) \
                     12:        :"di","si","cx"); \
                     13: _res; \
                     14: })

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