linux/arch/powerpc/include/asm/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 */
  11#define VDSO32_MBASE    VDSO32_LBASE
  12#define VDSO64_MBASE    VDSO64_LBASE
  13
  14#define VDSO_VERSION_STRING     LINUX_2.6.15
  15
  16/* Define if 64 bits VDSO has procedure descriptors */
  17#undef VDS64_HAS_DESCRIPTORS
  18
  19#ifndef __ASSEMBLY__
  20
  21/* Offsets relative to thread->vdso_base */
  22extern unsigned long vdso64_rt_sigtramp;
  23extern unsigned long vdso32_sigtramp;
  24extern unsigned long vdso32_rt_sigtramp;
  25
  26#else /* __ASSEMBLY__ */
  27
  28#ifdef __VDSO64__
  29#ifdef VDS64_HAS_DESCRIPTORS
  30#define V_FUNCTION_BEGIN(name)          \
  31        .globl name;                    \
  32        .section ".opd","a";            \
  33        .align 3;                       \
  34        name:                           \
  35        .quad .name,.TOC.@tocbase,0;    \
  36        .previous;                      \
  37        .globl .name;                   \
  38        .type .name,@function;          \
  39        .name:                          \
  40
  41#define V_FUNCTION_END(name)            \
  42        .size .name,.-.name;
  43
  44#define V_LOCAL_FUNC(name) (.name)
  45
  46#else /* VDS64_HAS_DESCRIPTORS */
  47
  48#define V_FUNCTION_BEGIN(name)          \
  49        .globl name;                    \
  50        name:                           \
  51
  52#define V_FUNCTION_END(name)            \
  53        .size name,.-name;
  54
  55#define V_LOCAL_FUNC(name) (name)
  56
  57#endif /* VDS64_HAS_DESCRIPTORS */
  58#endif /* __VDSO64__ */
  59
  60#ifdef __VDSO32__
  61
  62#define V_FUNCTION_BEGIN(name)          \
  63        .globl name;                    \
  64        .type name,@function;           \
  65        name:                           \
  66
  67#define V_FUNCTION_END(name)            \
  68        .size name,.-name;
  69
  70#define V_LOCAL_FUNC(name) (name)
  71
  72#endif /* __VDSO32__ */
  73
  74#endif /* __ASSEMBLY__ */
  75
  76#endif /* __KERNEL__ */
  77
  78#endif /* __PPC64_VDSO_H__ */
  79