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vdso.h
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1 #ifndef __PPC64_VDSO_H__
2 #define __PPC64_VDSO_H__
3 
4 #ifdef __KERNEL__
5 
6 /* Default link addresses for the vDSOs */
7 #define VDSO32_LBASE 0x100000
8 #define VDSO64_LBASE 0x100000
9 
10 /* Default map addresses for 32bit vDSO */
11 #define VDSO32_MBASE VDSO32_LBASE
12 
13 #define VDSO_VERSION_STRING LINUX_2.6.15
14 
15 /* Define if 64 bits VDSO has procedure descriptors */
16 #undef VDS64_HAS_DESCRIPTORS
17 
18 #ifndef __ASSEMBLY__
19 
20 /* Offsets relative to thread->vdso_base */
21 extern unsigned long vdso64_rt_sigtramp;
22 extern unsigned long vdso32_sigtramp;
23 extern unsigned long vdso32_rt_sigtramp;
24 
25 int __cpuinit vdso_getcpu_init(void);
26 
27 #else /* __ASSEMBLY__ */
28 
29 #ifdef __VDSO64__
30 #ifdef VDS64_HAS_DESCRIPTORS
31 #define V_FUNCTION_BEGIN(name) \
32  .globl name; \
33  .section ".opd","a"; \
34  .align 3; \
35  name: \
36  .quad .name,.TOC.@tocbase,0; \
37  .previous; \
38  .globl .name; \
39  .type .name,@function; \
40  .name: \
41 
42 #define V_FUNCTION_END(name) \
43  .size .name,.-.name;
44 
45 #define V_LOCAL_FUNC(name) (.name)
46 
47 #else /* VDS64_HAS_DESCRIPTORS */
48 
49 #define V_FUNCTION_BEGIN(name) \
50  .globl name; \
51  name: \
52 
53 #define V_FUNCTION_END(name) \
54  .size name,.-name;
55 
56 #define V_LOCAL_FUNC(name) (name)
57 
58 #endif /* VDS64_HAS_DESCRIPTORS */
59 #endif /* __VDSO64__ */
60 
61 #ifdef __VDSO32__
62 
63 #define V_FUNCTION_BEGIN(name) \
64  .globl name; \
65  .type name,@function; \
66  name: \
67 
68 #define V_FUNCTION_END(name) \
69  .size name,.-name;
70 
71 #define V_LOCAL_FUNC(name) (name)
72 
73 #endif /* __VDSO32__ */
74 
75 #endif /* __ASSEMBLY__ */
76 
77 #endif /* __KERNEL__ */
78 
79 #endif /* __PPC64_VDSO_H__ */