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
8 int __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
14 uint64_t __weak arch__intr_reg_mask(void)
15 {
16 return 0;
17 }
18
19 uint64_t __weak arch__user_reg_mask(void)
20 {
21 return 0;
22 }
23
24 static const struct sample_reg sample_reg_masks[] = {
25 SMPL_REG_END
26 };
27
28 const struct sample_reg * __weak arch__sample_reg_masks(void)
29 {
30 return sample_reg_masks;
31 }
32
33 const 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
59 int 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
81 out:
82 *valp = regs->cache_regs[id];
83 return 0;
84 }
85
86 uint64_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
111 uint64_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
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