arch/powerpc/include/asm/asm-compat.h

   1 #ifndef _ASM_POWERPC_ASM_COMPAT_H
   2 #define _ASM_POWERPC_ASM_COMPAT_H
   3
   4 #include <asm/types.h>
   5 #include <asm/ppc-opcode.h>
   6
   7 #ifdef __ASSEMBLY__
   8 #  define stringify_in_c(...)   __VA_ARGS__
   9 #  define ASM_CONST(x)          x
  10 #else
  11 /* This version of stringify will deal with commas... */
  12 #  define __stringify_in_c(...) #__VA_ARGS__
  13 #  define stringify_in_c(...)   __stringify_in_c(__VA_ARGS__) " "
  14 #  define __ASM_CONST(x)        x##UL
  15 #  define ASM_CONST(x)          __ASM_CONST(x)
  16 #endif
  17
  18
  19 #ifdef __powerpc64__
  20
  21 /* operations for longs and pointers */
  22 #define PPC_LL          stringify_in_c(ld)
  23 #define PPC_STL         stringify_in_c(std)
  24 #define PPC_LCMPI       stringify_in_c(cmpdi)
  25 #define PPC_LONG        stringify_in_c(.llong)
  26 #define PPC_LONG_ALIGN  stringify_in_c(.balign 8)
  27 #define PPC_TLNEI       stringify_in_c(tdnei)
  28 #define PPC_LLARX(t, a, b, eh)  PPC_LDARX(t, a, b, eh)
  29 #define PPC_STLCX       stringify_in_c(stdcx.)
  30 #define PPC_CNTLZL      stringify_in_c(cntlzd)
  31
  32 /* Move to CR, single-entry optimized version. Only available
  33  * on POWER4 and later.
  34  */
  35 #ifdef CONFIG_POWER4_ONLY
  36 #define PPC_MTOCRF      stringify_in_c(mtocrf)
  37 #else
  38 #define PPC_MTOCRF      stringify_in_c(mtcrf)
  39 #endif
  40
  41 #else /* 32-bit */
  42
  43 /* operations for longs and pointers */
  44 #define PPC_LL          stringify_in_c(lwz)
  45 #define PPC_STL         stringify_in_c(stw)
  46 #define PPC_LCMPI       stringify_in_c(cmpwi)
  47 #define PPC_LONG        stringify_in_c(.long)
  48 #define PPC_LONG_ALIGN  stringify_in_c(.balign 4)
  49 #define PPC_TLNEI       stringify_in_c(twnei)
  50 #define PPC_LLARX(t, a, b, eh)  PPC_LWARX(t, a, b, eh)
  51 #define PPC_STLCX       stringify_in_c(stwcx.)
  52 #define PPC_CNTLZL      stringify_in_c(cntlzw)
  53 #define PPC_MTOCRF      stringify_in_c(mtcrf)
  54
  55 #endif
  56
  57 #ifdef __KERNEL__
  58 #ifdef CONFIG_IBM405_ERR77
  59 /* Erratum #77 on the 405 means we need a sync or dcbt before every
  60  * stwcx.  The old ATOMIC_SYNC_FIX covered some but not all of this.
  61  */
  62 #define PPC405_ERR77(ra,rb)     stringify_in_c(dcbt     ra, rb;)
  63 #define PPC405_ERR77_SYNC       stringify_in_c(sync;)
  64 #else
  65 #define PPC405_ERR77(ra,rb)
  66 #define PPC405_ERR77_SYNC
  67 #endif
  68 #endif
  69
  70 #endif /* _ASM_POWERPC_ASM_COMPAT_H */