powerpc: EX_TABLE macro for exception tables

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>

1 files changed, 2 insertions, 4 deletions

diff --git a/arch/powerpc/sysdev/tsi108_pci.c b/arch/powerpc/sysdev/tsi108_pci.c
index 57c971b7839c..53a16aa4d384 100644
--- a/arch/powerpc/sysdev/tsi108_pci.c
+++ b/arch/powerpc/sysdev/tsi108_pci.c
@@ -137,10 +137,8 @@ void tsi108_clear_pci_error(u32 pci_cfg_base)
                 ".section .fixup,\"ax\"\n"              \
                 "3:     li %0,-1\n"                     \
                 "       b 2b\n"                         \
-                ".section __ex_table,\"a\"\n"           \
-                "       .align 2\n"                     \
-                "       .long 1b,3b\n"                  \
-                ".text"                                 \
+                ".previous\n"                           \
+                EX_TABLE(1b, 3b)                        \
                 : "=r"(x) : "r"(addr))
 
 int