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1#ifndef _ASM_POWERPC_ASM_COMPAT_H
2#define _ASM_POWERPC_ASM_COMPAT_H
3
4#include <asm/types.h>
5
6#ifdef __ASSEMBLY__
7# define stringify_in_c(...) __VA_ARGS__
8# define ASM_CONST(x) x
9#else
10/* This version of stringify will deal with commas... */
11# define __stringify_in_c(...) #__VA_ARGS__
12# define stringify_in_c(...) __stringify_in_c(__VA_ARGS__) " "
13# define __ASM_CONST(x) x##UL
14# define ASM_CONST(x) __ASM_CONST(x)
15#endif
16
17
18/*
19 * Feature section common macros
20 *
21 * Note that the entries now contain offsets between the table entry
22 * and the code rather than absolute code pointers in order to be
23 * useable with the vdso shared library. There is also an assumption
24 * that values will be negative, that is, the fixup table has to be
25 * located after the code it fixes up.
26 */
27#ifdef CONFIG_PPC64
28#ifdef __powerpc64__
29/* 64 bits kernel, 64 bits code */
30#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
3199: \
32 .section sect,"a"; \
33 .align 3; \
3498: \
35 .llong msk; \
36 .llong val; \
37 .llong label##b-98b; \
38 .llong 99b-98b; \
39 .previous
40#else /* __powerpc64__ */
41/* 64 bits kernel, 32 bits code (ie. vdso32) */
42#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
4399: \
44 .section sect,"a"; \
45 .align 3; \
4698: \
47 .llong msk; \
48 .llong val; \
49 .long 0xffffffff; \
50 .long label##b-98b; \
51 .long 0xffffffff; \
52 .long 99b-98b; \
53 .previous
54#endif /* !__powerpc64__ */
55#else /* CONFIG_PPC64 */
56/* 32 bits kernel, 32 bits code */
57#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
5899: \
59 .section sect,"a"; \
60 .align 2; \
6198: \
62 .long msk; \
63 .long val; \
64 .long label##b-98b; \
65 .long 99b-98b; \
66 .previous
67#endif /* !CONFIG_PPC64 */
68
69#ifdef __powerpc64__
70
71/* operations for longs and pointers */
72#define PPC_LL stringify_in_c(ld)
73#define PPC_STL stringify_in_c(std)
74#define PPC_LCMPI stringify_in_c(cmpdi)
75#define PPC_LONG stringify_in_c(.llong)
76#define PPC_TLNEI stringify_in_c(tdnei)
77#define PPC_LLARX stringify_in_c(ldarx)
78#define PPC_STLCX stringify_in_c(stdcx.)
79#define PPC_CNTLZL stringify_in_c(cntlzd)
80
81#else /* 32-bit */
82
83/* operations for longs and pointers */
84#define PPC_LL stringify_in_c(lwz)
85#define PPC_STL stringify_in_c(stw)
86#define PPC_LCMPI stringify_in_c(cmpwi)
87#define PPC_LONG stringify_in_c(.long)
88#define PPC_TLNEI stringify_in_c(twnei)
89#define PPC_LLARX stringify_in_c(lwarx)
90#define PPC_STLCX stringify_in_c(stwcx.)
91#define PPC_CNTLZL stringify_in_c(cntlzw)
92
93#endif
94
95#ifdef __KERNEL__
96#ifdef CONFIG_IBM405_ERR77
97/* Erratum #77 on the 405 means we need a sync or dcbt before every
98 * stwcx. The old ATOMIC_SYNC_FIX covered some but not all of this.
99 */
100#define PPC405_ERR77(ra,rb) stringify_in_c(dcbt ra, rb;)
101#define PPC405_ERR77_SYNC stringify_in_c(sync;)
102#else
103#define PPC405_ERR77(ra,rb)
104#define PPC405_ERR77_SYNC
105#endif
106#endif
107
108#endif /* _ASM_POWERPC_ASM_COMPAT_H */