1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Kernel Probes (KProbes)
4 * include/asm-mips/kprobes.h
5 *
6 * Copyright 2006 Sony Corp.
7 * Copyright 2010 Cavium Networks
8 */
9
10 #ifndef _ASM_KPROBES_H
11 #define _ASM_KPROBES_H
12
13 #include <asm-generic/kprobes.h>
14
15 #ifdef CONFIG_KPROBES
16 #include <linux/ptrace.h>
17 #include <linux/types.h>
18
19 #include <asm/cacheflush.h>
20 #include <asm/kdebug.h>
21 #include <asm/inst.h>
22
23 #define __ARCH_WANT_KPROBES_INSN_SLOT
24
25 struct kprobe;
26 struct pt_regs;
27
28 typedef union mips_instruction kprobe_opcode_t;
29
30 #define MAX_INSN_SIZE 2
31
32 #define flush_insn_slot(p) \
33 do { \
34 if (p->addr) \
35 flush_icache_range((unsigned long)p->addr, \
36 (unsigned long)p->addr + \
37 (MAX_INSN_SIZE * sizeof(kprobe_opcode_t))); \
38 } while (0)
39
40
41 #define kretprobe_blacklist_size 0
42
43 void arch_remove_kprobe(struct kprobe *p);
44 int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
45
46 /* Architecture specific copy of original instruction*/
47 struct arch_specific_insn {
48 /* copy of the original instruction */
49 kprobe_opcode_t *insn;
50 };
51
52 struct prev_kprobe {
53 struct kprobe *kp;
54 unsigned long status;
55 unsigned long old_SR;
56 unsigned long saved_SR;
57 unsigned long saved_epc;
58 };
59
60 #define SKIP_DELAYSLOT 0x0001
61
62 /* per-cpu kprobe control block */
63 struct kprobe_ctlblk {
64 unsigned long kprobe_status;
65 unsigned long kprobe_old_SR;
66 unsigned long kprobe_saved_SR;
67 unsigned long kprobe_saved_epc;
68 /* Per-thread fields, used while emulating branches */
69 unsigned long flags;
70 unsigned long target_epc;
71 struct prev_kprobe prev_kprobe;
72 };
73
74
75 #endif /* CONFIG_KPROBES */
76 #endif /* _ASM_KPROBES_H */
77
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.