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kernel/linux-rt-4.4.41/arch/powerpc/include/asm/asm-compat.h 2.45 KB
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  #ifndef _ASM_POWERPC_ASM_COMPAT_H
  #define _ASM_POWERPC_ASM_COMPAT_H
  
  #include <asm/types.h>
  #include <asm/ppc-opcode.h>
  
  #ifdef __ASSEMBLY__
  #  define stringify_in_c(...)	__VA_ARGS__
  #  define ASM_CONST(x)		x
  #else
  /* This version of stringify will deal with commas... */
  #  define __stringify_in_c(...)	#__VA_ARGS__
  #  define stringify_in_c(...)	__stringify_in_c(__VA_ARGS__) " "
  #  define __ASM_CONST(x)	x##UL
  #  define ASM_CONST(x)		__ASM_CONST(x)
  #endif
  
  
  #ifdef __powerpc64__
  
  /* operations for longs and pointers */
  #define PPC_LL		stringify_in_c(ld)
  #define PPC_STL		stringify_in_c(std)
  #define PPC_STLU	stringify_in_c(stdu)
  #define PPC_LCMPI	stringify_in_c(cmpdi)
  #define PPC_LCMPLI	stringify_in_c(cmpldi)
  #define PPC_LCMP	stringify_in_c(cmpd)
  #define PPC_LONG	stringify_in_c(.llong)
  #define PPC_LONG_ALIGN	stringify_in_c(.balign 8)
  #define PPC_TLNEI	stringify_in_c(tdnei)
  #define PPC_LLARX(t, a, b, eh)	PPC_LDARX(t, a, b, eh)
  #define PPC_STLCX	stringify_in_c(stdcx.)
  #define PPC_CNTLZL	stringify_in_c(cntlzd)
  #define PPC_MTOCRF(FXM, RS) MTOCRF((FXM), RS)
  #define PPC_LR_STKOFF	16
  #define PPC_MIN_STKFRM	112
  
  #ifdef __BIG_ENDIAN__
  #define LWZX_BE	stringify_in_c(lwzx)
  #define LDX_BE	stringify_in_c(ldx)
  #define STWX_BE	stringify_in_c(stwx)
  #define STDX_BE	stringify_in_c(stdx)
  #else
  #define LWZX_BE	stringify_in_c(lwbrx)
  #define LDX_BE	stringify_in_c(ldbrx)
  #define STWX_BE	stringify_in_c(stwbrx)
  #define STDX_BE	stringify_in_c(stdbrx)
  #endif
  
  #else /* 32-bit */
  
  /* operations for longs and pointers */
  #define PPC_LL		stringify_in_c(lwz)
  #define PPC_STL		stringify_in_c(stw)
  #define PPC_STLU	stringify_in_c(stwu)
  #define PPC_LCMPI	stringify_in_c(cmpwi)
  #define PPC_LCMPLI	stringify_in_c(cmplwi)
  #define PPC_LCMP	stringify_in_c(cmpw)
  #define PPC_LONG	stringify_in_c(.long)
  #define PPC_LONG_ALIGN	stringify_in_c(.balign 4)
  #define PPC_TLNEI	stringify_in_c(twnei)
  #define PPC_LLARX(t, a, b, eh)	PPC_LWARX(t, a, b, eh)
  #define PPC_STLCX	stringify_in_c(stwcx.)
  #define PPC_CNTLZL	stringify_in_c(cntlzw)
  #define PPC_MTOCRF	stringify_in_c(mtcrf)
  #define PPC_LR_STKOFF	4
  #define PPC_MIN_STKFRM	16
  
  #endif
  
  #ifdef __KERNEL__
  #ifdef CONFIG_IBM405_ERR77
  /* Erratum #77 on the 405 means we need a sync or dcbt before every
   * stwcx.  The old ATOMIC_SYNC_FIX covered some but not all of this.
   */
  #define PPC405_ERR77(ra,rb)	stringify_in_c(dcbt	ra, rb;)
  #define	PPC405_ERR77_SYNC	stringify_in_c(sync;)
  #else
  #define PPC405_ERR77(ra,rb)
  #define PPC405_ERR77_SYNC
  #endif
  #endif
  
  #endif /* _ASM_POWERPC_ASM_COMPAT_H */