include/linux/linkage.h

   1 #ifndef _LINUX_LINKAGE_H
   2 #define _LINUX_LINKAGE_H
   3
   4 #include <asm/linkage.h>
   5
   6 #ifdef __cplusplus
   7 #define CPP_ASMLINKAGE extern "C"
   8 #else
   9 #define CPP_ASMLINKAGE
  10 #endif
  11
  12 #ifndef asmlinkage
  13 #define asmlinkage CPP_ASMLINKAGE
  14 #endif
  15
  16 #ifndef prevent_tail_call
  17 # define prevent_tail_call(ret) do { } while (0)
  18 #endif
  19
  20 #ifndef __ALIGN
  21 #define __ALIGN         .align 4,0x90
  22 #define __ALIGN_STR     ".align 4,0x90"
  23 #endif
  24
  25 #ifdef __ASSEMBLY__
  26
  27 #define ALIGN __ALIGN
  28 #define ALIGN_STR __ALIGN_STR
  29
  30 #ifndef ENTRY
  31 #define ENTRY(name) \
  32   .globl name; \
  33   ALIGN; \
  34   name:
  35 #endif
  36
  37 #define KPROBE_ENTRY(name) \
  38   .pushsection .kprobes.text, "ax"; \
  39   ENTRY(name)
  40
  41 #define KPROBE_END(name) \
  42   END(name);             \
  43   .popsection
  44
  45 #ifndef END
  46 #define END(name) \
  47   .size name, .-name
  48 #endif
  49
  50 #ifndef ENDPROC
  51 #define ENDPROC(name) \
  52   .type name, @function; \
  53   END(name)
  54 #endif
  55
  56 #endif
  57
  58 #define NORET_TYPE    /**/
  59 #define ATTRIB_NORET  __attribute__((noreturn))
  60 #define NORET_AND     noreturn,
  61
  62 #ifndef FASTCALL
  63 #define FASTCALL(x)     x
  64 #define fastcall
  65 #endif
  66
  67 #endif