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-rw-r--r--include/asm-powerpc/asm-compat.h52
1 files changed, 52 insertions, 0 deletions
diff --git a/include/asm-powerpc/asm-compat.h b/include/asm-powerpc/asm-compat.h
index 8e64be0cc47..c89bd58ee28 100644
--- a/include/asm-powerpc/asm-compat.h
+++ b/include/asm-powerpc/asm-compat.h
@@ -14,6 +14,58 @@
14# define ASM_CONST(x) __ASM_CONST(x) 14# define ASM_CONST(x) __ASM_CONST(x)
15#endif 15#endif
16 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
17#ifdef __powerpc64__ 69#ifdef __powerpc64__
18 70
19/* operations for longs and pointers */ 71/* operations for longs and pointers */