xref: /linux/arch/powerpc/include/asm/asm-compat.h (revision ca55b2fef3a9373fcfc30f82fd26bc7fccbda732)
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_STLU	stringify_in_c(stdu)
25 #define PPC_LCMPI	stringify_in_c(cmpdi)
26 #define PPC_LCMPLI	stringify_in_c(cmpldi)
27 #define PPC_LCMP	stringify_in_c(cmpd)
28 #define PPC_LONG	stringify_in_c(.llong)
29 #define PPC_LONG_ALIGN	stringify_in_c(.balign 8)
30 #define PPC_TLNEI	stringify_in_c(tdnei)
31 #define PPC_LLARX(t, a, b, eh)	PPC_LDARX(t, a, b, eh)
32 #define PPC_STLCX	stringify_in_c(stdcx.)
33 #define PPC_CNTLZL	stringify_in_c(cntlzd)
34 #define PPC_MTOCRF(FXM, RS) MTOCRF((FXM), RS)
35 #define PPC_LR_STKOFF	16
36 #define PPC_MIN_STKFRM	112
37 
38 #ifdef __BIG_ENDIAN__
39 #define LWZX_BE	stringify_in_c(lwzx)
40 #define LDX_BE	stringify_in_c(ldx)
41 #define STWX_BE	stringify_in_c(stwx)
42 #define STDX_BE	stringify_in_c(stdx)
43 #else
44 #define LWZX_BE	stringify_in_c(lwbrx)
45 #define LDX_BE	stringify_in_c(ldbrx)
46 #define STWX_BE	stringify_in_c(stwbrx)
47 #define STDX_BE	stringify_in_c(stdbrx)
48 #endif
49 
50 #else /* 32-bit */
51 
52 /* operations for longs and pointers */
53 #define PPC_LL		stringify_in_c(lwz)
54 #define PPC_STL		stringify_in_c(stw)
55 #define PPC_STLU	stringify_in_c(stwu)
56 #define PPC_LCMPI	stringify_in_c(cmpwi)
57 #define PPC_LCMPLI	stringify_in_c(cmplwi)
58 #define PPC_LCMP	stringify_in_c(cmpw)
59 #define PPC_LONG	stringify_in_c(.long)
60 #define PPC_LONG_ALIGN	stringify_in_c(.balign 4)
61 #define PPC_TLNEI	stringify_in_c(twnei)
62 #define PPC_LLARX(t, a, b, eh)	PPC_LWARX(t, a, b, eh)
63 #define PPC_STLCX	stringify_in_c(stwcx.)
64 #define PPC_CNTLZL	stringify_in_c(cntlzw)
65 #define PPC_MTOCRF	stringify_in_c(mtcrf)
66 #define PPC_LR_STKOFF	4
67 #define PPC_MIN_STKFRM	16
68 
69 #endif
70 
71 #ifdef __KERNEL__
72 #ifdef CONFIG_IBM405_ERR77
73 /* Erratum #77 on the 405 means we need a sync or dcbt before every
74  * stwcx.  The old ATOMIC_SYNC_FIX covered some but not all of this.
75  */
76 #define PPC405_ERR77(ra,rb)	stringify_in_c(dcbt	ra, rb;)
77 #define	PPC405_ERR77_SYNC	stringify_in_c(sync;)
78 #else
79 #define PPC405_ERR77(ra,rb)
80 #define PPC405_ERR77_SYNC
81 #endif
82 #endif
83 
84 #endif /* _ASM_POWERPC_ASM_COMPAT_H */
85