bootrom/sdboot/include/bits.h

   1 // See LICENSE for license details.
   2 #ifndef _RISCV_BITS_H
   3 #define _RISCV_BITS_H
   4
   5 #define likely(x) __builtin_expect((x), 1)
   6 #define unlikely(x) __builtin_expect((x), 0)
   7
   8 #define ROUNDUP(a, b) ((((a)-1)/(b)+1)*(b))
   9 #define ROUNDDOWN(a, b) ((a)/(b)*(b))
  10
  11 #define MAX(a, b) ((a) > (b) ? (a) : (b))
  12 #define MIN(a, b) ((a) < (b) ? (a) : (b))
  13 #define CLAMP(a, lo, hi) MIN(MAX(a, lo), hi)
  14
  15 #define EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))
  16 #define INSERT_FIELD(val, which, fieldval) (((val) & ~(which)) | ((fieldval) * ((which) & ~((which)-1))))
  17
  18 #define STR(x) XSTR(x)
  19 #define XSTR(x) #x
  20
  21 #if __riscv_xlen == 64
  22 # define SLL32    sllw
  23 # define STORE    sd
  24 # define LOAD     ld
  25 # define LWU      lwu
  26 # define LOG_REGBYTES 3
  27 #else
  28 # define SLL32    sll
  29 # define STORE    sw
  30 # define LOAD     lw
  31 # define LWU      lw
  32 # define LOG_REGBYTES 2
  33 #endif
  34 #define REGBYTES (1 << LOG_REGBYTES)
  35
  36 #endif