1/*
2 *    User-space Probes (UProbes) for s390
3 *
4 *    Copyright IBM Corp. 2014
5 *    Author(s): Jan Willeke,
6 */
7
8#ifndef _ASM_UPROBES_H
9#define _ASM_UPROBES_H
10
11#include <linux/notifier.h>
12
13typedef u16 uprobe_opcode_t;
14
15#define UPROBE_XOL_SLOT_BYTES	256 /* cache aligned */
16
17#define UPROBE_SWBP_INSN	0x0002
18#define UPROBE_SWBP_INSN_SIZE	2
19
20struct arch_uprobe {
21	union{
22		uprobe_opcode_t insn[3];
23		uprobe_opcode_t ixol[3];
24	};
25	unsigned int saved_per : 1;
26	unsigned int saved_int_code;
27};
28
29struct arch_uprobe_task {
30};
31
32int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm,
33			     unsigned long addr);
34int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
35int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
36bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
37int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
38				 void *data);
39void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs);
40unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
41						struct pt_regs *regs);
42#endif	/* _ASM_UPROBES_H */
43