arch/powerpc/include/asm/vdso.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PPC64_VDSO_H__
   3 #define __PPC64_VDSO_H__
   4
   5 #ifdef __KERNEL__
   6
   7 /* Default link addresses for the vDSOs */
   8 #define VDSO32_LBASE    0x0
   9 #define VDSO64_LBASE    0x0
  10
  11 /* Default map addresses for 32bit vDSO */
  12 #define VDSO32_MBASE    0x100000
  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 */
  22 extern unsigned long vdso64_rt_sigtramp;
  23 extern unsigned long vdso32_sigtramp;
  24 extern unsigned long vdso32_rt_sigtramp;
  25
  26 int vdso_getcpu_init(void);
  27
  28 #else /* __ASSEMBLY__ */
  29
  30 #ifdef __VDSO64__
  31 #ifdef VDS64_HAS_DESCRIPTORS
  32 #define V_FUNCTION_BEGIN(name)          \
  33         .globl name;                    \
  34         .section ".opd","a";            \
  35         .align 3;                       \
  36         name:                           \
  37         .quad .name,.TOC.@tocbase,0;    \
  38         .previous;                      \
  39         .globl .name;                   \
  40         .type .name,@function;          \
  41         .name:                          \
  42
  43 #define V_FUNCTION_END(name)            \
  44         .size .name,.-.name;
  45
  46 #define V_LOCAL_FUNC(name) (.name)
  47
  48 #else /* VDS64_HAS_DESCRIPTORS */
  49
  50 #define V_FUNCTION_BEGIN(name)          \
  51         .globl name;                    \
  52         name:                           \
  53
  54 #define V_FUNCTION_END(name)            \
  55         .size name,.-name;
  56
  57 #define V_LOCAL_FUNC(name) (name)
  58
  59 #endif /* VDS64_HAS_DESCRIPTORS */
  60 #endif /* __VDSO64__ */
  61
  62 #ifdef __VDSO32__
  63
  64 #define V_FUNCTION_BEGIN(name)          \
  65         .globl name;                    \
  66         .type name,@function;           \
  67         name:                           \
  68
  69 #define V_FUNCTION_END(name)            \
  70         .size name,.-name;
  71
  72 #define V_LOCAL_FUNC(name) (name)
  73
  74 #endif /* __VDSO32__ */
  75
  76 #endif /* __ASSEMBLY__ */
  77
  78 #endif /* __KERNEL__ */
  79
  80 #endif /* __PPC64_VDSO_H__ */