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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/powerpc/include/asm/asm-compat.h
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#ifndef _ASM_POWERPC_ASM_COMPAT_H

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#define _ASM_POWERPC_ASM_COMPAT_H

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#include <asm/types.h>

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#include <asm/ppc-opcode.h>

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#ifdef __ASSEMBLY__

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#  define stringify_in_c(...)	__VA_ARGS__

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#  define ASM_CONST(x)		x

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#else

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/* This version of stringify will deal with commas... */

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#  define __stringify_in_c(...)	#__VA_ARGS__

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#  define stringify_in_c(...)	__stringify_in_c(__VA_ARGS__) " "

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#  define __ASM_CONST(x)	x##UL

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#  define ASM_CONST(x)		__ASM_CONST(x)

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#endif

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#ifdef __powerpc64__

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/* operations for longs and pointers */

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#define PPC_LL		stringify_in_c(ld)

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#define PPC_STL		stringify_in_c(std)

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#define PPC_STLU	stringify_in_c(stdu)

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#define PPC_LCMPI	stringify_in_c(cmpdi)

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#define PPC_LONG	stringify_in_c(.llong)

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#define PPC_LONG_ALIGN	stringify_in_c(.balign 8)

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#define PPC_TLNEI	stringify_in_c(tdnei)

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#define PPC_LLARX(t, a, b, eh)	PPC_LDARX(t, a, b, eh)

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#define PPC_STLCX	stringify_in_c(stdcx.)

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#define PPC_CNTLZL	stringify_in_c(cntlzd)

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#define PPC_LR_STKOFF	16

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#define PPC_MIN_STKFRM	112

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/* Move to CR, single-entry optimized version. Only available

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 * on POWER4 and later.

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 */

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#ifdef CONFIG_POWER4_ONLY

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#define PPC_MTOCRF	stringify_in_c(mtocrf)

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#else

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#define PPC_MTOCRF	stringify_in_c(mtcrf)

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#endif

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#else /* 32-bit */

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/* operations for longs and pointers */

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#define PPC_LL		stringify_in_c(lwz)

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#define PPC_STL		stringify_in_c(stw)

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#define PPC_STLU	stringify_in_c(stwu)

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#define PPC_LCMPI	stringify_in_c(cmpwi)

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#define PPC_LONG	stringify_in_c(.long)

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#define PPC_LONG_ALIGN	stringify_in_c(.balign 4)

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#define PPC_TLNEI	stringify_in_c(twnei)

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#define PPC_LLARX(t, a, b, eh)	PPC_LWARX(t, a, b, eh)

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#define PPC_STLCX	stringify_in_c(stwcx.)

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#define PPC_CNTLZL	stringify_in_c(cntlzw)

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#define PPC_MTOCRF	stringify_in_c(mtcrf)

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#define PPC_LR_STKOFF	4

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#define PPC_MIN_STKFRM	16

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#endif

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#ifdef __KERNEL__

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#ifdef CONFIG_IBM405_ERR77

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/* Erratum #77 on the 405 means we need a sync or dcbt before every

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 * stwcx.  The old ATOMIC_SYNC_FIX covered some but not all of this.

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 */

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#define PPC405_ERR77(ra,rb)	stringify_in_c(dcbt	ra, rb;)

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#define	PPC405_ERR77_SYNC	stringify_in_c(sync;)

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#else

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#define PPC405_ERR77(ra,rb)

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#define PPC405_ERR77_SYNC

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#endif

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#endif

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#endif /* _ASM_POWERPC_ASM_COMPAT_H */

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