1// SPDX-License-Identifier: GPL-2.0
2#include <errno.h>
3#include <string.h>
4#include "perf_regs.h"
5#include "util/sample.h"
6#include "debug.h"
7
8int __weak arch_sdt_arg_parse_op(char *old_op __maybe_unused,
9				 char **new_op __maybe_unused)
10{
11	return SDT_ARG_SKIP;
12}
13
14uint64_t __weak arch__intr_reg_mask(void)
15{
16	return 0;
17}
18
19uint64_t __weak arch__user_reg_mask(void)
20{
21	return 0;
22}
23
24#ifdef HAVE_PERF_REGS_SUPPORT
25
26const char *perf_reg_name(int id, const char *arch)
27{
28	const char *reg_name = NULL;
29
30	if (!strcmp(arch, "csky"))
31		reg_name = __perf_reg_name_csky(id);
32	else if (!strcmp(arch, "loongarch"))
33		reg_name = __perf_reg_name_loongarch(id);
34	else if (!strcmp(arch, "mips"))
35		reg_name = __perf_reg_name_mips(id);
36	else if (!strcmp(arch, "powerpc"))
37		reg_name = __perf_reg_name_powerpc(id);
38	else if (!strcmp(arch, "riscv"))
39		reg_name = __perf_reg_name_riscv(id);
40	else if (!strcmp(arch, "s390"))
41		reg_name = __perf_reg_name_s390(id);
42	else if (!strcmp(arch, "x86"))
43		reg_name = __perf_reg_name_x86(id);
44	else if (!strcmp(arch, "arm"))
45		reg_name = __perf_reg_name_arm(id);
46	else if (!strcmp(arch, "arm64"))
47		reg_name = __perf_reg_name_arm64(id);
48
49	return reg_name ?: "unknown";
50}
51
52int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
53{
54	int i, idx = 0;
55	u64 mask = regs->mask;
56
57	if ((u64)id >= PERF_SAMPLE_REGS_CACHE_SIZE)
58		return -EINVAL;
59
60	if (regs->cache_mask & (1ULL << id))
61		goto out;
62
63	if (!(mask & (1ULL << id)))
64		return -EINVAL;
65
66	for (i = 0; i < id; i++) {
67		if (mask & (1ULL << i))
68			idx++;
69	}
70
71	regs->cache_mask |= (1ULL << id);
72	regs->cache_regs[id] = regs->regs[idx];
73
74out:
75	*valp = regs->cache_regs[id];
76	return 0;
77}
78
79uint64_t perf_arch_reg_ip(const char *arch)
80{
81	if (!strcmp(arch, "arm"))
82		return __perf_reg_ip_arm();
83	else if (!strcmp(arch, "arm64"))
84		return __perf_reg_ip_arm64();
85	else if (!strcmp(arch, "csky"))
86		return __perf_reg_ip_csky();
87	else if (!strcmp(arch, "loongarch"))
88		return __perf_reg_ip_loongarch();
89	else if (!strcmp(arch, "mips"))
90		return __perf_reg_ip_mips();
91	else if (!strcmp(arch, "powerpc"))
92		return __perf_reg_ip_powerpc();
93	else if (!strcmp(arch, "riscv"))
94		return __perf_reg_ip_riscv();
95	else if (!strcmp(arch, "s390"))
96		return __perf_reg_ip_s390();
97	else if (!strcmp(arch, "x86"))
98		return __perf_reg_ip_x86();
99
100	pr_err("Fail to find IP register for arch %s, returns 0\n", arch);
101	return 0;
102}
103
104uint64_t perf_arch_reg_sp(const char *arch)
105{
106	if (!strcmp(arch, "arm"))
107		return __perf_reg_sp_arm();
108	else if (!strcmp(arch, "arm64"))
109		return __perf_reg_sp_arm64();
110	else if (!strcmp(arch, "csky"))
111		return __perf_reg_sp_csky();
112	else if (!strcmp(arch, "loongarch"))
113		return __perf_reg_sp_loongarch();
114	else if (!strcmp(arch, "mips"))
115		return __perf_reg_sp_mips();
116	else if (!strcmp(arch, "powerpc"))
117		return __perf_reg_sp_powerpc();
118	else if (!strcmp(arch, "riscv"))
119		return __perf_reg_sp_riscv();
120	else if (!strcmp(arch, "s390"))
121		return __perf_reg_sp_s390();
122	else if (!strcmp(arch, "x86"))
123		return __perf_reg_sp_x86();
124
125	pr_err("Fail to find SP register for arch %s, returns 0\n", arch);
126	return 0;
127}
128
129#endif
130