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powerpc: EX_TABLE macro for exception tables

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This macro is taken from s390, and allows more flexibility in
changing exception table format.

mpe: Put it in ppc_asm.h and only define one version using
stringinfy_in_c(). Add some empty definitions and headers to keep the
selftests happy.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Nicholas Piggin 2016-10-13 16:42:53 +11:00 • committed by Michael Ellerman
parent 997e200182
commit 24bfa6a9e0
21 changed files with 241 additions and 327 deletions
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15
arch/powerpc/lib/sstep.c
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@ -493,10 +493,7 @@ static int __kprobes do_vsx_store(int rn, int (*func)(int, unsigned long),
"3: li %0,%4\n" \
" b 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
PPC_LONG_ALIGN "\n" \
PPC_LONG "1b,3b\n" \
".previous" \
EX_TABLE(1b, 3b) \
: "=r" (err), "=r" (cr) \
: "r" (x), "r" (addr), "i" (-EFAULT), "0" (err))
@ -508,10 +505,7 @@ static int __kprobes do_vsx_store(int rn, int (*func)(int, unsigned long),
"3: li %0,%3\n" \
" b 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
PPC_LONG_ALIGN "\n" \
PPC_LONG "1b,3b\n" \
".previous" \
EX_TABLE(1b, 3b) \
: "=r" (err), "=r" (x) \
: "r" (addr), "i" (-EFAULT), "0" (err))
@ -523,10 +517,7 @@ static int __kprobes do_vsx_store(int rn, int (*func)(int, unsigned long),
"3: li %0,%3\n" \
" b 2b\n" \
".previous\n" \
".section __ex_table,\"a\"\n" \
PPC_LONG_ALIGN "\n" \
PPC_LONG "1b,3b\n" \
".previous" \
EX_TABLE(1b, 3b) \
: "=r" (err) \
: "r" (addr), "i" (-EFAULT), "0" (err))