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authorJan-Simon Möller <dl9pf@gmx.de>2013-08-29 21:13:04 +0200
committerH. Peter Anvin <hpa@linux.intel.com>2013-08-29 13:26:32 -0700
commit3e9b2327b59801e677a7581fe4d2541ca749dcab (patch)
tree8da66aebe0d47bb80bc2dc1f10adab07a8e6e1c9 /arch/x86
parent3e21bb092d07e6d394e6d754057d4ff2d363d318 (diff)
x86, asm: Extend definitions of _ASM_* with a raw format
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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/asm.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 1c2d247f65c..4582e8e1cd1 100644
--- a/arch/x86/include/asm/asm.h
+++ b/arch/x86/include/asm/asm.h
@@ -3,21 +3,25 @@
#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(e##reg, r##reg)
+#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)