1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright 2020, IBM Corporation.
6 #include <linux/uaccess.h>
7 #include <asm/disassemble.h>
9 #include <asm/ppc-opcode.h>
12 int probe_user_read_inst(struct ppc_inst *inst,
13 struct ppc_inst __user *nip)
15 unsigned int val, suffix;
18 err = probe_user_read(&val, nip, sizeof(val));
21 if (get_op(val) == OP_PREFIX) {
22 err = probe_user_read(&suffix, (void __user *)nip + 4, 4);
23 *inst = ppc_inst_prefix(val, suffix);
25 *inst = ppc_inst(val);
30 int probe_kernel_read_inst(struct ppc_inst *inst,
33 unsigned int val, suffix;
36 err = probe_kernel_read(&val, src, sizeof(val));
39 if (get_op(val) == OP_PREFIX) {
40 err = probe_kernel_read(&suffix, (void *)src + 4, 4);
41 *inst = ppc_inst_prefix(val, suffix);
43 *inst = ppc_inst(val);
47 #else /* !CONFIG_PPC64 */
48 int probe_user_read_inst(struct ppc_inst *inst,
49 struct ppc_inst __user *nip)
54 err = probe_user_read(&val, nip, sizeof(val));
56 *inst = ppc_inst(val);
61 int probe_kernel_read_inst(struct ppc_inst *inst,
67 err = probe_kernel_read(&val, src, sizeof(val));
69 *inst = ppc_inst(val);
73 #endif /* CONFIG_PPC64 */