diff options
| author | Jon Medhurst <tixy@yxit.co.uk> | 2011-04-18 09:53:58 +0200 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2011-04-29 05:40:59 +0200 |
| commit | 72c2bab2be734d63dee4342e67b1754c54fded70 (patch) | |
| tree | ea4877ab3615b569c81cc9b7991c43dcd9aef192 /arch | |
| parent | ARM: kprobes: Fix emulation of PLD instructions (diff) | |
| download | linux-72c2bab2be734d63dee4342e67b1754c54fded70.tar.xz linux-72c2bab2be734d63dee4342e67b1754c54fded70.zip | |
ARM: kprobes: Remove redundant code in space_1111
The tests to explicitly reject probing CPS, RFE and SRS instructions
are redundant as the default case is now to reject undecoded patterns.
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/kernel/kprobes-decode.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/arch/arm/kernel/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c index bddf8d0f3dc1..dc315c12d5f3 100644 --- a/arch/arm/kernel/kprobes-decode.c +++ b/arch/arm/kernel/kprobes-decode.c @@ -927,14 +927,6 @@ prep_emulate_rdhi16rdlo12rs8rm0_wflags(kprobe_opcode_t insn, static enum kprobe_insn __kprobes space_1111(kprobe_opcode_t insn, struct arch_specific_insn *asi) { - /* CPS mmod == 1 : 1111 0001 0000 xx10 xxxx xxxx xx0x xxxx */ - /* RFE : 1111 100x x0x1 xxxx xxxx 1010 xxxx xxxx */ - /* SRS : 1111 100x x1x0 1101 xxxx 0101 xxxx xxxx */ - if ((insn & 0xfff30020) == 0xf1020000 || - (insn & 0xfe500f00) == 0xf8100a00 || - (insn & 0xfe5f0f00) == 0xf84d0500) - return INSN_REJECTED; - /* memory hint : 1111 0100 x001 xxxx xxxx xxxx xxxx xxxx : */ /* PLDI : 1111 0100 x101 xxxx xxxx xxxx xxxx xxxx : */ /* PLDW : 1111 0101 x001 xxxx xxxx xxxx xxxx xxxx : */ @@ -950,7 +942,11 @@ space_1111(kprobe_opcode_t insn, struct arch_specific_insn *asi) return INSN_GOOD_NO_SLOT; } - /* SETEND : 1111 0001 0000 0001 xxxx xxxx 0000 xxxx */ + /* CPS : 1111 0001 0000 xxx0 xxxx xxxx xx0x xxxx */ + /* SETEND: 1111 0001 0000 0001 xxxx xxxx 0000 xxxx */ + + /* SRS : 1111 100x x1x0 xxxx xxxx xxxx xxxx xxxx */ + /* RFE : 1111 100x x0x1 xxxx xxxx xxxx xxxx xxxx */ /* Coprocessor instructions... */ /* MCRR2 : 1111 1100 0100 xxxx xxxx xxxx xxxx xxxx : (Rd != Rn) */ |