1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 #ifndef _ASM_UPROBES_H
3 #define _ASM_UPROBES_H
4 /*
5  * User-space Probes (UProbes) for powerpc
6  *
7  * Copyright IBM Corporation, 2007-2012
8  *
9  * Adapted from the x86 port by Ananth N Mavinakayanahalli <ananth@in.ibm.com>
10  */
11 
12 #include <linux/notifier.h>
13 #include <asm/probes.h>
14 #include <asm/inst.h>
15 
16 typedef ppc_opcode_t uprobe_opcode_t;
17 
18 #define MAX_UINSN_BYTES		8
19 #define UPROBE_XOL_SLOT_BYTES	(MAX_UINSN_BYTES)
20 
21 /* The following alias is needed for reference from arch-agnostic code */
22 #define UPROBE_SWBP_INSN	BREAKPOINT_INSTRUCTION
23 #define UPROBE_SWBP_INSN_SIZE	4 /* swbp insn size in bytes */
24 
25 struct arch_uprobe {
26 	union {
27 		u32 insn[2];
28 		u32 ixol[2];
29 	};
30 };
31 
32 struct arch_uprobe_task {
33 	unsigned long	saved_trap_nr;
34 };
35 
36 #endif	/* _ASM_UPROBES_H */
37