40faf463e6
There are situations in which the architecture wants to use the register that represents its word-size, whatever it is. For those, introduce __ASM_REG in asm.h, along with the first users _ASM_AX and _ASM_DX. They have users waiting for it, namely the getuser functions. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
38 lines
904 B
C
38 lines
904 B
C
#ifndef _ASM_X86_ASM_H
|
|
#define _ASM_X86_ASM_H
|
|
|
|
#ifdef __ASSEMBLY__
|
|
# define __ASM_FORM(x) x
|
|
#else
|
|
# define __ASM_FORM(x) " " #x " "
|
|
#endif
|
|
|
|
#ifdef CONFIG_X86_32
|
|
# define __ASM_SEL(a,b) __ASM_FORM(a)
|
|
#else
|
|
# define __ASM_SEL(a,b) __ASM_FORM(b)
|
|
#endif
|
|
|
|
#define __ASM_SIZE(inst) __ASM_SEL(inst##l, inst##q)
|
|
#define __ASM_REG(reg) __ASM_SEL(e##reg, r##reg)
|
|
|
|
#define _ASM_PTR __ASM_SEL(.long, .quad)
|
|
#define _ASM_ALIGN __ASM_SEL(.balign 4, .balign 8)
|
|
#define _ASM_MOV_UL __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_DX __ASM_REG(dx)
|
|
|
|
/* Exception table entry */
|
|
# define _ASM_EXTABLE(from,to) \
|
|
" .section __ex_table,\"a\"\n" \
|
|
_ASM_ALIGN "\n" \
|
|
_ASM_PTR #from "," #to "\n" \
|
|
" .previous\n"
|
|
|
|
#endif /* _ASM_X86_ASM_H */
|