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clang: workaround for generated constants

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KBuild abuses the asm statement to write to a file and
clang chokes about these invalid asm statements. Hack it
even more by fooling this is actual valid asm code.

cc: Masahiro Yamada <yamada.m@jp.panasonic.com>
cc: Tom Rini <trini@ti.com>
Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>
This commit is contained in:
Jeroen Hofstee 2014-07-30 21:54:54 +02:00 committed by Albert ARIBAUD
parent f2cbb037a7
commit fe5d1abcf4
2 changed files with 5 additions and 4 deletions
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3
Kbuild
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@ -53,7 +53,8 @@ targets += arch/$(ARCH)/lib/asm-offsets.s
# Default sed regexp - multiline due to syntax constraints # Default sed regexp - multiline due to syntax constraints
define sed-y define sed-y
"/^->/{s:->#\(.*\):/* \1 */:; \ "s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
/^->/{s:->#\(.*\):/* \1 */:; \
s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \ s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \ s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
s:->::; p;}" s:->::; p;}"

6
include/linux/kbuild.h
View File

@ -7,14 +7,14 @@
#define __LINUX_KBUILD_H #define __LINUX_KBUILD_H
#define DEFINE(sym, val) \ #define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val)) asm volatile("\n.ascii \"->" #sym " %0 " #val "\"" : : "i" (val))
#define BLANK() asm volatile("\n->" : : ) #define BLANK() asm volatile("\n.ascii \"->\"" : : )
#define OFFSET(sym, str, mem) \ #define OFFSET(sym, str, mem) \
DEFINE(sym, offsetof(struct str, mem)) DEFINE(sym, offsetof(struct str, mem))
#define COMMENT(x) \ #define COMMENT(x) \
asm volatile("\n->#" x) asm volatile("\n.ascii \"->#" x "\"")
#endif #endif