mirror of
https://github.com/torvalds/linux
synced 2024-10-26 05:09:47 +00:00
3e9b2327b5
The __ASM_* macros (e.g. __ASM_DX) are used to return the proper register name (e.g. edx for 32bit / rdx for 64bit). We want to use this also in arch/x86/include/asm/uaccess.h / get_user() . For this to work, we need a raw form as both gcc and clang choke on the whitespace in a register asm() statement, and the __ASM_FORM macro surrounds the argument with blanks. A new macro, __ASM_FORM_RAW was added and we change __ASM_REG to use the new RAW form. Signed-off-by: Jan-Simon Möller <dl9pf@gmx.de> Link: http://lkml.kernel.org/r/1377803585-5913-2-git-send-email-dl9pf@gmx.de Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
77 lines
1.9 KiB
C
77 lines
1.9 KiB
C
#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
|
|
#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"
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_ASM_H */
|