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tile: use proper .align directives on __ex_table sections

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This may fix a reported bug where an R_TILEGX_64 in a module was not
pointing to an aligned address.

Reported-by: Simon Marchi <simon.marchi@polymtl.ca>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf
2013-08-09 15:38:43 -04:00
parent 3fa17c395b
commit d4d9eab4ad
7 changed files with 24 additions and 0 deletions
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1
arch/tile/include/asm/futex.h
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@@ -43,6 +43,7 @@
".pushsection .fixup,\"ax\"\n" \
"0: { movei %0, %5; j 9f }\n" \
".section __ex_table,\"a\"\n" \
".align 8\n" \
".quad 1b, 0b\n" \
".popsection\n" \
"9:" \

6
arch/tile/include/asm/uaccess.h
View File

@@ -127,8 +127,10 @@ extern int fixup_exception(struct pt_regs *regs);
#ifdef __LP64__
#define _ASM_PTR ".quad"
#define _ASM_ALIGN ".align 8"
#else
#define _ASM_PTR ".long"
#define _ASM_ALIGN ".align 4"
#endif
#define __get_user_asm(OP, x, ptr, ret) \
@@ -137,6 +139,7 @@ extern int fixup_exception(struct pt_regs *regs);
"0: { movei %1, 0; movei %0, %3 }\n" \
"j 9f\n" \
".section __ex_table,\"a\"\n" \
_ASM_ALIGN "\n" \
_ASM_PTR " 1b, 0b\n" \
".popsection\n" \
"9:" \
@@ -168,6 +171,7 @@ extern int fixup_exception(struct pt_regs *regs);
"0: { movei %1, 0; movei %2, 0 }\n" \
"{ movei %0, %4; j 9f }\n" \
".section __ex_table,\"a\"\n" \
".align 4\n" \
".word 1b, 0b\n" \
".word 2b, 0b\n" \
".popsection\n" \
@@ -224,6 +228,7 @@ extern int __get_user_bad(void)
".pushsection .fixup,\"ax\"\n" \
"0: { movei %0, %3; j 9f }\n" \
".section __ex_table,\"a\"\n" \
_ASM_ALIGN "\n" \
_ASM_PTR " 1b, 0b\n" \
".popsection\n" \
"9:" \
@@ -248,6 +253,7 @@ extern int __get_user_bad(void)
".pushsection .fixup,\"ax\"\n" \
"0: { movei %0, %4; j 9f }\n" \
".section __ex_table,\"a\"\n" \
".align 4\n" \
".word 1b, 0b\n" \
".word 2b, 0b\n" \
".popsection\n" \