arch/x86/include/asm/asm.h

   1 #ifndef _ASM_X86_ASM_H
   2 #define _ASM_X86_ASM_H
   3
   4 #ifdef __ASSEMBLY__
   5 # define __ASM_FORM(x)  x
   6 # define __ASM_FORM_COMMA(x) x,
   7 #else
   8 # define __ASM_FORM(x)  " " #x " "
   9 # define __ASM_FORM_COMMA(x) " " #x ","
  10 #endif
  11
  12 #ifdef CONFIG_X86_32
  13 # define __ASM_SEL(a,b) __ASM_FORM(a)
  14 #else
  15 # define __ASM_SEL(a,b) __ASM_FORM(b)
  16 #endif
  17
  18 #define __ASM_SIZE(inst, ...)   __ASM_SEL(inst##l##__VA_ARGS__, \
  19                                           inst##q##__VA_ARGS__)
  20 #define __ASM_REG(reg)          __ASM_SEL(e##reg, r##reg)
  21
  22 #define _ASM_PTR        __ASM_SEL(.long, .quad)
  23 #define _ASM_ALIGN      __ASM_SEL(.balign 4, .balign 8)
  24
  25 #define _ASM_MOV        __ASM_SIZE(mov)
  26 #define _ASM_INC        __ASM_SIZE(inc)
  27 #define _ASM_DEC        __ASM_SIZE(dec)
  28 #define _ASM_ADD        __ASM_SIZE(add)
  29 #define _ASM_SUB        __ASM_SIZE(sub)
  30 #define _ASM_XADD       __ASM_SIZE(xadd)
  31
  32 #define _ASM_AX         __ASM_REG(ax)
  33 #define _ASM_BX         __ASM_REG(bx)
  34 #define _ASM_CX         __ASM_REG(cx)
  35 #define _ASM_DX         __ASM_REG(dx)
  36 #define _ASM_SP         __ASM_REG(sp)
  37 #define _ASM_BP         __ASM_REG(bp)
  38 #define _ASM_SI         __ASM_REG(si)
  39 #define _ASM_DI         __ASM_REG(di)
  40
  41 /* Exception table entry */
  42 #ifdef __ASSEMBLY__
  43 # define _ASM_EXTABLE(from,to)                                  \
  44         .pushsection "__ex_table","a" ;                         \
  45         .balign 8 ;                                             \
  46         .long (from) - . ;                                      \
  47         .long (to) - . ;                                        \
  48         .popsection
  49
  50 # define _ASM_EXTABLE_EX(from,to)                               \
  51         .pushsection "__ex_table","a" ;                         \
  52         .balign 8 ;                                             \
  53         .long (from) - . ;                                      \
  54         .long (to) - . + 0x7ffffff0 ;                           \
  55         .popsection
  56 #else
  57 # define _ASM_EXTABLE(from,to)                                  \
  58         " .pushsection \"__ex_table\",\"a\"\n"                  \
  59         " .balign 8\n"                                          \
  60         " .long (" #from ") - .\n"                              \
  61         " .long (" #to ") - .\n"                                \
  62         " .popsection\n"
  63
  64 # define _ASM_EXTABLE_EX(from,to)                               \
  65         " .pushsection \"__ex_table\",\"a\"\n"                  \
  66         " .balign 8\n"                                          \
  67         " .long (" #from ") - .\n"                              \
  68         " .long (" #to ") - . + 0x7ffffff0\n"                   \
  69         " .popsection\n"
  70 #endif
  71
  72 #endif /* _ASM_X86_ASM_H */