kernel/arch/powerpc/include/asm/vdso.h

   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    0x0
   8 #define VDSO64_LBASE    0x0
   9
  10 /* Default map addresses for 32bit vDSO */
  11 #define VDSO32_MBASE    0x100000
  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 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__ */