summaryrefslogtreecommitdiffstats
path: root/arch/arm
diff options
context:
space:
mode:
authorJon Medhurst <tixy@yxit.co.uk>2011-06-08 18:09:36 +0100
committerTixy <tixy@medhuaa1.miniserver.com>2011-07-13 17:32:49 +0000
commitad2e81a78d016176b9f194414495a4ce166399e1 (patch)
treef37252b50c502da6e985899bf0c9a7b181520d71 /arch/arm
parent2ce5d03307222b3d5b7c5e9849eb4857eb979fa9 (diff)
downloadtalos-obmc-linux-ad2e81a78d016176b9f194414495a4ce166399e1.tar.gz
talos-obmc-linux-ad2e81a78d016176b9f194414495a4ce166399e1.zip
ARM: kprobes: Migrate ARM space_cccc_0111__1 to decoding tables
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk> Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/kernel/kprobes-arm.c82
1 files changed, 36 insertions, 46 deletions
diff --git a/arch/arm/kernel/kprobes-arm.c b/arch/arm/kernel/kprobes-arm.c
index 62035057846a..58faacc598bf 100644
--- a/arch/arm/kernel/kprobes-arm.c
+++ b/arch/arm/kernel/kprobes-arm.c
@@ -1373,57 +1373,47 @@ static const union decode_item arm_cccc_0110_____xxx1_table[] = {
DECODE_END
};
-static enum kprobe_insn __kprobes
-space_cccc_0111__1(kprobe_opcode_t insn, struct arch_specific_insn *asi)
-{
- /* Undef : cccc 0111 1111 xxxx xxxx xxxx 1111 xxxx */
- if ((insn & 0x0ff000f0) == 0x03f000f0)
- return INSN_REJECTED;
+static const union decode_item arm_cccc_0111_____xxx1_table[] = {
+ /* Media instructions */
- /* SMLALD : cccc 0111 0100 xxxx xxxx xxxx 00x1 xxxx */
- /* SMLSLD : cccc 0111 0100 xxxx xxxx xxxx 01x1 xxxx */
- if ((insn & 0x0ff00090) == 0x07400010)
- return prep_emulate_rdhi16rdlo12rs8rm0_wflags(insn, asi);
-
- /* SMLAD : cccc 0111 0000 xxxx xxxx xxxx 00x1 xxxx :Q */
- /* SMUAD : cccc 0111 0000 xxxx 1111 xxxx 00x1 xxxx :Q */
- /* SMLSD : cccc 0111 0000 xxxx xxxx xxxx 01x1 xxxx :Q */
- /* SMUSD : cccc 0111 0000 xxxx 1111 xxxx 01x1 xxxx : */
- /* SMMLA : cccc 0111 0101 xxxx xxxx xxxx 00x1 xxxx : */
- /* SMMUL : cccc 0111 0101 xxxx 1111 xxxx 00x1 xxxx : */
- /* USADA8 : cccc 0111 1000 xxxx xxxx xxxx 0001 xxxx : */
- /* USAD8 : cccc 0111 1000 xxxx 1111 xxxx 0001 xxxx : */
- if ((insn & 0x0ff00090) == 0x07000010 ||
- (insn & 0x0ff000d0) == 0x07500010 ||
- (insn & 0x0ff000f0) == 0x07800010) {
-
- if ((insn & 0x0000f000) == 0x0000f000)
- return prep_emulate_rd16rs8rm0_wflags(insn, asi);
- else
- return prep_emulate_rd16rn12rs8rm0_wflags(insn, asi);
- }
+ /* UNDEFINED cccc 0111 1111 xxxx xxxx xxxx 1111 xxxx */
+ DECODE_REJECT (0x0ff000f0, 0x07f000f0),
- /* SMMLS : cccc 0111 0101 xxxx xxxx xxxx 11x1 xxxx : */
- if ((insn & 0x0ff000d0) == 0x075000d0)
- return prep_emulate_rd16rn12rs8rm0_wflags(insn, asi);
+ /* SMLALD cccc 0111 0100 xxxx xxxx xxxx 00x1 xxxx */
+ /* SMLSLD cccc 0111 0100 xxxx xxxx xxxx 01x1 xxxx */
+ DECODE_CUSTOM (0x0ff00090, 0x07400010, prep_emulate_rdhi16rdlo12rs8rm0_wflags),
- /* SBFX : cccc 0111 101x xxxx xxxx xxxx x101 xxxx : */
- /* UBFX : cccc 0111 111x xxxx xxxx xxxx x101 xxxx : */
- if ((insn & 0x0fa00070) == 0x07a00050)
- return prep_emulate_rd12rm0(insn, asi);
+ /* SMUAD cccc 0111 0000 xxxx 1111 xxxx 00x1 xxxx */
+ /* SMUSD cccc 0111 0000 xxxx 1111 xxxx 01x1 xxxx */
+ DECODE_OR (0x0ff0f090, 0x0700f010),
+ /* SMMUL cccc 0111 0101 xxxx 1111 xxxx 00x1 xxxx */
+ DECODE_OR (0x0ff0f0d0, 0x0750f010),
+ /* USAD8 cccc 0111 1000 xxxx 1111 xxxx 0001 xxxx */
+ DECODE_CUSTOM (0x0ff0f0f0, 0x0780f010, prep_emulate_rd16rs8rm0_wflags),
- /* BFI : cccc 0111 110x xxxx xxxx xxxx x001 xxxx : */
- /* BFC : cccc 0111 110x xxxx xxxx xxxx x001 1111 : */
- if ((insn & 0x0fe00070) == 0x07c00010) {
+ /* SMLAD cccc 0111 0000 xxxx xxxx xxxx 00x1 xxxx */
+ /* SMLSD cccc 0111 0000 xxxx xxxx xxxx 01x1 xxxx */
+ DECODE_OR (0x0ff00090, 0x07000010),
+ /* SMMLA cccc 0111 0101 xxxx xxxx xxxx 00x1 xxxx */
+ DECODE_OR (0x0ff000d0, 0x07500010),
+ /* USADA8 cccc 0111 1000 xxxx xxxx xxxx 0001 xxxx */
+ DECODE_CUSTOM (0x0ff000f0, 0x07800010, prep_emulate_rd16rn12rs8rm0_wflags),
- if ((insn & 0x0000000f) == 0x0000000f)
- return prep_emulate_rd12_modify(insn, asi);
- else
- return prep_emulate_rd12rn0_modify(insn, asi);
- }
+ /* SMMLS cccc 0111 0101 xxxx xxxx xxxx 11x1 xxxx */
+ DECODE_CUSTOM (0x0ff000d0, 0x075000d0, prep_emulate_rd16rn12rs8rm0_wflags),
- return INSN_REJECTED;
-}
+ /* SBFX cccc 0111 101x xxxx xxxx xxxx x101 xxxx */
+ /* UBFX cccc 0111 111x xxxx xxxx xxxx x101 xxxx */
+ DECODE_CUSTOM (0x0fa00070, 0x07a00050, prep_emulate_rd12rm0),
+
+ /* BFC cccc 0111 110x xxxx xxxx xxxx x001 1111 */
+ DECODE_CUSTOM (0x0fe0007f, 0x07c0001f, prep_emulate_rd12_modify),
+
+ /* BFI cccc 0111 110x xxxx xxxx xxxx x001 xxxx */
+ DECODE_CUSTOM (0x0fe00070, 0x07c00010, prep_emulate_rd12rn0_modify),
+
+ DECODE_END
+};
static enum kprobe_insn __kprobes
space_cccc_01xx(kprobe_opcode_t insn, struct arch_specific_insn *asi)
@@ -1532,7 +1522,7 @@ arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
else if ((insn & 0x0f000010) == 0x07000010)
- return space_cccc_0111__1(insn, asi);
+ return kprobe_decode_insn(insn, asi, arm_cccc_0111_____xxx1_table, false);
else if ((insn & 0x0c000000) == 0x04000000)
OpenPOWER on IntegriCloud