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x86, extable: Use .pushsection ... .popsection for _ASM_EXTABLE()

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Instead of using .section ... .previous, use .pushsection
... .popsection; this is (hopefully) a bit more robust, especially in
complex assembly code.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: David Daney <david.daney@cavium.com>
Link: http://lkml.kernel.org/r/CA%2B55aFyijf43qSu3N9nWHEBwaGbb7T2Oq9A=9EyR=Jtyqfq_cQ@mail.gmail.com
This commit is contained in:
H. Peter Anvin 2012-04-20 12:12:27 -07:00
parent 060feb6500
commit d4541805e8
1 changed files with 10 additions and 10 deletions
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20
arch/x86/include/asm/asm.h
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@ -42,17 +42,17 @@
/* Exception table entry */
#ifdef __ASSEMBLY__
# define _ASM_EXTABLE(from,to) \
__ASM_EX_SEC ; \
_ASM_ALIGN ; \
_ASM_PTR from , to ; \
.previous
# define _ASM_EXTABLE(from,to) \
.pushsection "__ex_table","a" ; \
_ASM_ALIGN ; \
_ASM_PTR from , to ; \
.popsection
#else
# define _ASM_EXTABLE(from,to) \
__ASM_EX_SEC \
_ASM_ALIGN "\n" \
_ASM_PTR #from "," #to "\n" \
" .previous\n"
# define _ASM_EXTABLE(from,to) \
" .pushsection \"__ex_table\",\"a\"\n" \
_ASM_ALIGN "\n" \
_ASM_PTR #from "," #to "\n" \
" .popsection\n"
#endif
#endif /* _ASM_X86_ASM_H */