diff options
Diffstat (limited to 'arch/arm/kernel/kprobes.c')
| -rw-r--r-- | arch/arm/kernel/kprobes.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c index 77b7c69..129c116 100644 --- a/arch/arm/kernel/kprobes.c +++ b/arch/arm/kernel/kprobes.c @@ -51,6 +51,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) kprobe_opcode_t insn; kprobe_opcode_t tmp_insn[MAX_INSN_SIZE]; unsigned long addr = (unsigned long)p->addr; + bool thumb; kprobe_decode_insn_t *decode_insn; int is; @@ -58,6 +59,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) return -EINVAL; #ifdef CONFIG_THUMB2_KERNEL + thumb = true; addr &= ~1; /* Bit 0 would normally be set to indicate Thumb code */ insn = ((u16 *)addr)[0]; if (is_wide_instruction(insn)) { @@ -67,6 +69,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) } else decode_insn = thumb16_kprobe_decode_insn; #else /* !CONFIG_THUMB2_KERNEL */ + thumb = false; if (addr & 0x3) return -EINVAL; insn = *p->addr; @@ -88,6 +91,8 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) p->ainsn.insn[is] = tmp_insn[is]; flush_insns(p->ainsn.insn, sizeof(p->ainsn.insn[0]) * MAX_INSN_SIZE); + p->ainsn.insn_fn = (kprobe_insn_fn_t *) + ((uintptr_t)p->ainsn.insn | thumb); break; case INSN_GOOD_NO_SLOT: /* instruction doesn't need insn slot */ |
