1// SPDX-License-Identifier: GPL-2.0
 2#include <errno.h>
 
 3#include "perf_regs.h"
 4#include "event.h"
 5
 6const struct sample_reg __weak sample_reg_masks[] = {
 7	SMPL_REG_END
 8};
 9
10int __weak arch_sdt_arg_parse_op(char *old_op __maybe_unused,
11				 char **new_op __maybe_unused)
12{
13	return SDT_ARG_SKIP;
14}
15
16uint64_t __weak arch__intr_reg_mask(void)
17{
18	return PERF_REGS_MASK;
19}
20
21uint64_t __weak arch__user_reg_mask(void)
22{
23	return PERF_REGS_MASK;
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
24}
25
26#ifdef HAVE_PERF_REGS_SUPPORT
27int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
28{
29	int i, idx = 0;
30	u64 mask = regs->mask;
31
 
 
 
32	if (regs->cache_mask & (1ULL << id))
33		goto out;
34
35	if (!(mask & (1ULL << id)))
36		return -EINVAL;
37
38	for (i = 0; i < id; i++) {
39		if (mask & (1ULL << i))
40			idx++;
41	}
42
43	regs->cache_mask |= (1ULL << id);
44	regs->cache_regs[id] = regs->regs[idx];
45
46out:
47	*valp = regs->cache_regs[id];
48	return 0;
49}
50#endif
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

  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}