[POWERPC] Correct masks used in emulating some instructions

When we get an illegal instruction exception, we check to see whether
the instruction is one that we emulate for the user program.  Some of
the masks we use in checking whether the offending instruction is one
we care about didn't have the top bit set, which is the MSB of the
major opcode.  Thus some undefined opcodes could get emulated as other
(defined but unimplemented) instructions.  This corrects the masks.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 125761aaa40b..4d0b4e74d579 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -585,14 +585,14 @@ static void parse_fpe(struct pt_regs *regs)
 #define INST_MFSPR_PVR_MASK     0xfc1fffff
 
 #define INST_DCBA               0x7c0005ec
-#define INST_DCBA_MASK          0x7c0007fe
+#define INST_DCBA_MASK          0xfc0007fe
 
 #define INST_MCRXR              0x7c000400
-#define INST_MCRXR_MASK         0x7c0007fe
+#define INST_MCRXR_MASK         0xfc0007fe
 
 #define INST_STRING             0x7c00042a
-#define INST_STRING_MASK        0x7c0007fe
-#define INST_STRING_GEN_MASK    0x7c00067e
+#define INST_STRING_MASK        0xfc0007fe
+#define INST_STRING_GEN_MASK    0xfc00067e
 #define INST_LSWI               0x7c0004aa
 #define INST_LSWX               0x7c00042a
 #define INST_STSWI              0x7c0005aa