root/arch/x86/include/asm/asm.h

INCLUDED FROM

#ifndef _ASM_X86_ASM_H
#define _ASM_X86_ASM_H

#ifdef __ASSEMBLY__
# define __ASM_FORM(x)  x
# define __ASM_FORM_RAW(x)     x
# define __ASM_FORM_COMMA(x) x,
#else
# define __ASM_FORM(x)  " " #x " "
# define __ASM_FORM_RAW(x)     #x
# define __ASM_FORM_COMMA(x) " " #x ","
#endif

#ifdef CONFIG_X86_32
# define __ASM_SEL(a,b) __ASM_FORM(a)
# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(a)
#else
# define __ASM_SEL(a,b) __ASM_FORM(b)
# define __ASM_SEL_RAW(a,b) __ASM_FORM_RAW(b)
#endif

#define __ASM_SIZE(inst, ...)   __ASM_SEL(inst##l##__VA_ARGS__, \
                                          inst##q##__VA_ARGS__)
#define __ASM_REG(reg)         __ASM_SEL_RAW(e##reg, r##reg)

#define _ASM_PTR        __ASM_SEL(.long, .quad)
#define _ASM_ALIGN      __ASM_SEL(.balign 4, .balign 8)

#define _ASM_MOV        __ASM_SIZE(mov)
#define _ASM_INC        __ASM_SIZE(inc)
#define _ASM_DEC        __ASM_SIZE(dec)
#define _ASM_ADD        __ASM_SIZE(add)
#define _ASM_SUB        __ASM_SIZE(sub)
#define _ASM_XADD       __ASM_SIZE(xadd)

#define _ASM_AX         __ASM_REG(ax)
#define _ASM_BX         __ASM_REG(bx)
#define _ASM_CX         __ASM_REG(cx)
#define _ASM_DX         __ASM_REG(dx)
#define _ASM_SP         __ASM_REG(sp)
#define _ASM_BP         __ASM_REG(bp)
#define _ASM_SI         __ASM_REG(si)
#define _ASM_DI         __ASM_REG(di)

/* Exception table entry */
#ifdef __ASSEMBLY__
# define _ASM_EXTABLE(from,to)                                  \
        .pushsection "__ex_table","a" ;                         \
        .balign 8 ;                                             \
        .long (from) - . ;                                      \
        .long (to) - . ;                                        \
        .popsection

# define _ASM_EXTABLE_EX(from,to)                               \
        .pushsection "__ex_table","a" ;                         \
        .balign 8 ;                                             \
        .long (from) - . ;                                      \
        .long (to) - . + 0x7ffffff0 ;                           \
        .popsection

# define _ASM_NOKPROBE(entry)                                   \
        .pushsection "_kprobe_blacklist","aw" ;                 \
        _ASM_ALIGN ;                                            \
        _ASM_PTR (entry);                                       \
        .popsection
#else
# define _ASM_EXTABLE(from,to)                                  \
        " .pushsection \"__ex_table\",\"a\"\n"                  \
        " .balign 8\n"                                          \
        " .long (" #from ") - .\n"                              \
        " .long (" #to ") - .\n"                                \
        " .popsection\n"

# define _ASM_EXTABLE_EX(from,to)                               \
        " .pushsection \"__ex_table\",\"a\"\n"                  \
        " .balign 8\n"                                          \
        " .long (" #from ") - .\n"                              \
        " .long (" #to ") - . + 0x7ffffff0\n"                   \
        " .popsection\n"
/* For C file, we already have NOKPROBE_SYMBOL macro */
#endif

#endif /* _ASM_X86_ASM_H */