static int arch_copy_kprobe(struct kprobe *p)
{
int ret;
/* Copy an instruction with recovering if other optprobe modifies it.*/
ret = __copy_instruction(p->ainsn.insn, p->addr);
if (!ret)
return -EINVAL;
/*
* __copy_instruction can modify the displacement of the instruction,
* but it doesn't affect boostable check.
*/
if (can_boost(p->ainsn.insn))
p->ainsn.boostable = 0;
else
p->ainsn.boostable = -1;
/* Check whether the instruction modifies Interrupt Flag or not */
p->ainsn.if_modifier = is_IF_modifier(p->ainsn.insn);
/* Also, displacement change doesn't affect the first byte */
p->opcode = p->ainsn.insn[0];
return 0;
}
static int arch_copy_kprobe(struct kprobe *p)
{
struct insn insn;
kprobe_opcode_t buf[MAX_INSN_SIZE];
int len;
/* Copy an instruction with recovering if other optprobe modifies it.*/
len = __copy_instruction(buf, p->addr, p->ainsn.insn, &insn);
if (!len)
return -EINVAL;
/*
* __copy_instruction can modify the displacement of the instruction,
* but it doesn't affect boostable check.
*/
len = prepare_boost(buf, p, &insn);
/* Check whether the instruction modifies Interrupt Flag or not */
p->ainsn.if_modifier = is_IF_modifier(buf);
/* Also, displacement change doesn't affect the first byte */
p->opcode = buf[0];
/* OK, write back the instruction(s) into ROX insn buffer */
text_poke(p->ainsn.insn, buf, len);
return 0;
}
static void __kprobes arch_copy_kprobe(struct kprobe *p)
{
/*
* Copy an instruction without recovering int3, because it will be
* put by another subsystem.
*/
__copy_instruction(p->ainsn.insn, p->addr, 0);
if (can_boost(p->addr))
p->ainsn.boostable = 0;
else
p->ainsn.boostable = -1;
p->opcode = *p->addr;
}
static void __kprobes arch_copy_kprobe(struct kprobe *p)
{
/* Copy an instruction with recovering if other optprobe modifies it.*/
__copy_instruction(p->ainsn.insn, p->addr);
/*
* __copy_instruction can modify the displacement of the instruction,
* but it doesn't affect boostable check.
*/
if (can_boost(p->ainsn.insn))
p->ainsn.boostable = 0;
else
p->ainsn.boostable = -1;
/* Also, displacement change doesn't affect the first byte */
p->opcode = p->ainsn.insn[0];
}
