1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __PERF_REGS_H
3 #define __PERF_REGS_H
4 
5 #include <linux/types.h>
6 #include <linux/compiler.h>
7 
8 struct regs_dump;
9 
10 struct sample_reg {
11 	const char *name;
12 	uint64_t mask;
13 };
14 #define SMPL_REG(n, b) { .name = #n, .mask = 1ULL << (b) }
15 #define SMPL_REG2(n, b) { .name = #n, .mask = 3ULL << (b) }
16 #define SMPL_REG_END { .name = NULL }
17 
18 enum {
19 	SDT_ARG_VALID = 0,
20 	SDT_ARG_SKIP,
21 };
22 
23 int arch_sdt_arg_parse_op(char *old_op, char **new_op);
24 uint64_t arch__intr_reg_mask(void);
25 uint64_t arch__user_reg_mask(void);
26 
27 #ifdef HAVE_PERF_REGS_SUPPORT
28 extern const struct sample_reg sample_reg_masks[];
29 
30 #include <perf_regs.h>
31 
32 #define DWARF_MINIMAL_REGS ((1ULL << PERF_REG_IP) | (1ULL << PERF_REG_SP))
33 
34 int perf_reg_value(u64 *valp, struct regs_dump *regs, int id);
35 
perf_reg_name(int id)36 static inline const char *perf_reg_name(int id)
37 {
38 	const char *reg_name = __perf_reg_name(id);
39 
40 	return reg_name ?: "unknown";
41 }
42 
43 #else
44 #define PERF_REGS_MASK	0
45 #define PERF_REGS_MAX	0
46 
47 #define DWARF_MINIMAL_REGS PERF_REGS_MASK
48 
perf_reg_name(int id __maybe_unused)49 static inline const char *perf_reg_name(int id __maybe_unused)
50 {
51 	return "unknown";
52 }
53 
perf_reg_value(u64 * valp __maybe_unused,struct regs_dump * regs __maybe_unused,int id __maybe_unused)54 static inline int perf_reg_value(u64 *valp __maybe_unused,
55 				 struct regs_dump *regs __maybe_unused,
56 				 int id __maybe_unused)
57 {
58 	return 0;
59 }
60 #endif /* HAVE_PERF_REGS_SUPPORT */
61 #endif /* __PERF_REGS_H */
62