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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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11
arch/powerpc/lib/string.S
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@@ -13,8 +13,6 @@
#include <asm/ppc_asm.h>
#include <asm/export.h>
.section __ex_table,"a"
PPC_LONG_ALIGN
.text
/* This clears out any unused part of the destination buffer,
@@ -125,10 +123,9 @@ _GLOBAL(__clear_user)
92: mfctr r3
blr
.section __ex_table,"a"
PPC_LONG 11b,90b
PPC_LONG 1b,91b
PPC_LONG 8b,92b
.text
EX_TABLE(11b, 90b)
EX_TABLE(1b, 91b)
EX_TABLE(8b, 92b)
EXPORT_SYMBOL(__clear_user)
#endif