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ARM: kprobes: Migrate ARM space_cccc_01xx to decoding tables 

Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
This commit is contained in:
Jon Medhurst 2011-06-09 09:12:58 +01:00 committed by Tixy
parent ad2e81a78d
commit 56d8fbddc2
1 changed files with 17 additions and 16 deletions
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33
arch/arm/kernel/kprobes-arm.c
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@ -1415,23 +1415,24 @@ static const union decode_item arm_cccc_0111_____xxx1_table[] = {
DECODE_END
};
static enum kprobe_insn __kprobes
space_cccc_01xx(kprobe_opcode_t insn, struct arch_specific_insn *asi)
{
/* LDR : cccc 01xx x0x1 xxxx xxxx xxxx xxxx xxxx */
/* LDRB : cccc 01xx x1x1 xxxx xxxx xxxx xxxx xxxx */
/* LDRBT : cccc 01x0 x111 xxxx xxxx xxxx xxxx xxxx */
/* LDRT : cccc 01x0 x011 xxxx xxxx xxxx xxxx xxxx */
/* STR : cccc 01xx x0x0 xxxx xxxx xxxx xxxx xxxx */
/* STRB : cccc 01xx x1x0 xxxx xxxx xxxx xxxx xxxx */
/* STRBT : cccc 01x0 x110 xxxx xxxx xxxx xxxx xxxx */
/* STRT : cccc 01x0 x010 xxxx xxxx xxxx xxxx xxxx */
static const union decode_item arm_cccc_01xx_table[] = {
/* Load/store word and unsigned byte */
if ((insn & 0x00500000) == 0x00500000 && is_r15(insn, 12))
return INSN_REJECTED; /* LDRB into PC */
/* LDRB/STRB pc,[...] cccc 01xx x0xx xxxx xxxx xxxx xxxx xxxx */
DECODE_REJECT (0x0c40f000, 0x0440f000),
return prep_emulate_ldr_str(insn, asi);
}
/* LDR cccc 01xx x0x1 xxxx xxxx xxxx xxxx xxxx */
/* LDRB cccc 01xx x1x1 xxxx xxxx xxxx xxxx xxxx */
/* LDRBT cccc 01x0 x111 xxxx xxxx xxxx xxxx xxxx */
/* LDRT cccc 01x0 x011 xxxx xxxx xxxx xxxx xxxx */
/* STR cccc 01xx x0x0 xxxx xxxx xxxx xxxx xxxx */
/* STRB cccc 01xx x1x0 xxxx xxxx xxxx xxxx xxxx */
/* STRBT cccc 01x0 x110 xxxx xxxx xxxx xxxx xxxx */
/* STRT cccc 01x0 x010 xxxx xxxx xxxx xxxx xxxx */
DECODE_CUSTOM (0x0c000000, 0x04000000, prep_emulate_ldr_str),
DECODE_END
};
static enum kprobe_insn __kprobes
space_cccc_100x(kprobe_opcode_t insn, struct arch_specific_insn *asi)
@ -1526,7 +1527,7 @@ arm_kprobe_decode_insn(kprobe_opcode_t insn, struct arch_specific_insn *asi)
else if ((insn & 0x0c000000) == 0x04000000)
return space_cccc_01xx(insn, asi);
return kprobe_decode_insn(insn, asi, arm_cccc_01xx_table, false);
else if ((insn & 0x0e000000) == 0x08000000)