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Message-ID: <tip-3e9b2327b59801e677a7581fe4d2541ca749dcab@git.kernel.org>
Date: Thu, 29 Aug 2013 13:30:56 -0700
From: "tip-bot for Jan-Simon Möller"
<tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
dl9pf@....de, tglx@...utronix.de, hpa@...ux.intel.com
Subject: [tip:x86/asm] x86, asm:
Extend definitions of _ASM_* with a raw format
Commit-ID: 3e9b2327b59801e677a7581fe4d2541ca749dcab
Gitweb: http://git.kernel.org/tip/3e9b2327b59801e677a7581fe4d2541ca749dcab
Author: Jan-Simon Möller <dl9pf@....de>
AuthorDate: Thu, 29 Aug 2013 21:13:04 +0200
Committer: H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Thu, 29 Aug 2013 13:26:32 -0700
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@....de>
Link: http://lkml.kernel.org/r/1377803585-5913-2-git-send-email-dl9pf@gmx.de
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
arch/x86/include/asm/asm.h | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/asm.h b/arch/x86/include/asm/asm.h
index 1c2d247..4582e8e 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)
--
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