{
}
+static void __kprobes
+emulate_rd12_modify(struct kprobe *p, struct pt_regs *regs)
+{
+ insn_1arg_fn_t *i_fn = (insn_1arg_fn_t *)&p->ainsn.insn[0];
+ kprobe_opcode_t insn = p->opcode;
+ int rd = (insn >> 12) & 0xf;
+ long rdv = regs->uregs[rd];
+
+ regs->uregs[rd] = insnslot_1arg_rflags(rdv, regs->ARM_cpsr, i_fn);
+}
+
static void __kprobes emulate_rd12rm0(struct kprobe *p, struct pt_regs *regs)
{
insn_1arg_fn_t *i_fn = (insn_1arg_fn_t *)&p->ainsn.insn[0];
}
static enum kprobe_insn __kprobes
+prep_emulate_rd12_modify(kprobe_opcode_t insn, struct arch_specific_insn *asi)
+{
+ if (is_r15(insn, 12))
+ return INSN_REJECTED; /* Rd is PC */
+
+ insn &= 0xffff0fff; /* Rd = r0 */
+ asi->insn[0] = insn;
+ asi->insn_handler = emulate_rd12_modify;
+ return INSN_GOOD;
+}
+
+static enum kprobe_insn __kprobes
prep_emulate_rd12rm0(kprobe_opcode_t insn, struct arch_specific_insn *asi)
{
if (is_r15(insn, 12))
static enum kprobe_insn __kprobes
space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi)
{
+ /* MOVW : cccc 0011 0000 xxxx xxxx xxxx xxxx xxxx */
+ /* MOVT : cccc 0011 0100 xxxx xxxx xxxx xxxx xxxx */
+ if ((insn & 0x0fb00000) == 0x03000000)
+ return prep_emulate_rd12_modify(insn, asi);
+
/*
* MSR : cccc 0011 0x10 xxxx xxxx xxxx xxxx xxxx
- * Undef : cccc 0011 0100 xxxx xxxx xxxx xxxx xxxx
* ALU op with S bit and Rd == 15 :
* cccc 001x xxx1 xxxx 1111 xxxx xxxx xxxx
*/
if ((insn & 0x0fb00000) == 0x03200000 || /* MSR */
- (insn & 0x0ff00000) == 0x03400000 || /* Undef */
(insn & 0x0e10f000) == 0x0210f000) /* ALU s-bit, R15 */
return INSN_REJECTED;