arch/powerpc/boot/xz_config.h

   1 #ifndef __XZ_CONFIG_H__
   2 #define __XZ_CONFIG_H__
   3
   4 /*
   5  * most of this is copied from lib/xz/xz_private.h, we can't use their defines
   6  * since the boot wrapper is not built in the same environment as the rest of
   7  * the kernel.
   8  */
   9
  10 #include "types.h"
  11 #include "swab.h"
  12
  13 static inline uint32_t swab32p(void *p)
  14 {
  15         uint32_t *q = p;
  16
  17         return swab32(*q);
  18 }
  19
  20 #ifdef __LITTLE_ENDIAN__
  21 #define get_le32(p) (*((uint32_t *) (p)))
  22 #else
  23 #define get_le32(p) swab32p(p)
  24 #endif
  25
  26 #define memeq(a, b, size) (memcmp(a, b, size) == 0)
  27 #define memzero(buf, size) memset(buf, 0, size)
  28
  29 /* prevent the inclusion of the xz-preboot MM headers */
  30 #define DECOMPR_MM_H
  31 #define memmove memmove
  32 #define XZ_EXTERN static
  33
  34 /* xz.h needs to be included directly since we need enum xz_mode */
  35 #include "../../../include/linux/xz.h"
  36
  37 #undef XZ_EXTERN
  38
  39 #endif