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
24static const struct sample_reg sample_reg_masks[] = {
25	SMPL_REG_END
26};
27
28const struct sample_reg * __weak arch__sample_reg_masks(void)
29{
30	return sample_reg_masks;
31}
32
33const char *perf_reg_name(int id, const char *arch)
34{
35	const char *reg_name = NULL;
36
37	if (!strcmp(arch, "csky"))
38		reg_name = __perf_reg_name_csky(id);
39	else if (!strcmp(arch, "loongarch"))
40		reg_name = __perf_reg_name_loongarch(id);
41	else if (!strcmp(arch, "mips"))
42		reg_name = __perf_reg_name_mips(id);
43	else if (!strcmp(arch, "powerpc"))
44		reg_name = __perf_reg_name_powerpc(id);
45	else if (!strcmp(arch, "riscv"))
46		reg_name = __perf_reg_name_riscv(id);
47	else if (!strcmp(arch, "s390"))
48		reg_name = __perf_reg_name_s390(id);
49	else if (!strcmp(arch, "x86"))
50		reg_name = __perf_reg_name_x86(id);
51	else if (!strcmp(arch, "arm"))
52		reg_name = __perf_reg_name_arm(id);
53	else if (!strcmp(arch, "arm64"))
54		reg_name = __perf_reg_name_arm64(id);
55
56	return reg_name ?: "unknown";
57}
58
59int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
60{
61	int i, idx = 0;
62	u64 mask = regs->mask;
63
64	if ((u64)id >= PERF_SAMPLE_REGS_CACHE_SIZE)
65		return -EINVAL;
66
67	if (regs->cache_mask & (1ULL << id))
68		goto out;
69
70	if (!(mask & (1ULL << id)))
71		return -EINVAL;
72
73	for (i = 0; i < id; i++) {
74		if (mask & (1ULL << i))
75			idx++;
76	}
77
78	regs->cache_mask |= (1ULL << id);
79	regs->cache_regs[id] = regs->regs[idx];
80
81out:
82	*valp = regs->cache_regs[id];
83	return 0;
84}
85
86uint64_t perf_arch_reg_ip(const char *arch)
87{
88	if (!strcmp(arch, "arm"))
89		return __perf_reg_ip_arm();
90	else if (!strcmp(arch, "arm64"))
91		return __perf_reg_ip_arm64();
92	else if (!strcmp(arch, "csky"))
93		return __perf_reg_ip_csky();
94	else if (!strcmp(arch, "loongarch"))
95		return __perf_reg_ip_loongarch();
96	else if (!strcmp(arch, "mips"))
97		return __perf_reg_ip_mips();
98	else if (!strcmp(arch, "powerpc"))
99		return __perf_reg_ip_powerpc();
100	else if (!strcmp(arch, "riscv"))
101		return __perf_reg_ip_riscv();
102	else if (!strcmp(arch, "s390"))
103		return __perf_reg_ip_s390();
104	else if (!strcmp(arch, "x86"))
105		return __perf_reg_ip_x86();
106
107	pr_err("Fail to find IP register for arch %s, returns 0\n", arch);
108	return 0;
109}
110
111uint64_t perf_arch_reg_sp(const char *arch)
112{
113	if (!strcmp(arch, "arm"))
114		return __perf_reg_sp_arm();
115	else if (!strcmp(arch, "arm64"))
116		return __perf_reg_sp_arm64();
117	else if (!strcmp(arch, "csky"))
118		return __perf_reg_sp_csky();
119	else if (!strcmp(arch, "loongarch"))
120		return __perf_reg_sp_loongarch();
121	else if (!strcmp(arch, "mips"))
122		return __perf_reg_sp_mips();
123	else if (!strcmp(arch, "powerpc"))
124		return __perf_reg_sp_powerpc();
125	else if (!strcmp(arch, "riscv"))
126		return __perf_reg_sp_riscv();
127	else if (!strcmp(arch, "s390"))
128		return __perf_reg_sp_s390();
129	else if (!strcmp(arch, "x86"))
130		return __perf_reg_sp_x86();
131
132	pr_err("Fail to find SP register for arch %s, returns 0\n", arch);
133	return 0;
134}
135