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