lunaix-os/arch/aarch64/includes/asm/bits.h

   1 #ifndef __LUNAIX_ARCH_BITS_H
   2 #define __LUNAIX_ARCH_BITS_H
   3
   4 #include <asm-generic/bits.h>
   5
   6 #undef _BITS_EXTRACT
   7 #undef _BITS_INSERT
   8
   9 #define _BITS_EXTRACT(from, h, l)       \
  10         ({                              \
  11             unsigned long _r;           \
  12             asm ("ubfm %0, %1, %2, %3"  \
  13                  : "=r"(_r)             \
  14                  : "r"(from),           \
  15                    "i"(l),"i"(h));      \
  16             _r;                         \
  17         })
  18
  19 #define _BITS_INSERT(to, from, h, l)    \
  20         ({                              \
  21             unsigned long _r = to;      \
  22             asm ("bfi %0, %1, %2, %3"   \
  23                  : "=r"(_r)             \
  24                  : "r"(from),           \
  25                    "i"(l),              \
  26                    "i"(h - l + 1));     \
  27             _r;                         \
  28         })
  29
  30
  31 #endif /* __LUNAIX_ARCH_BITS_H */