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
 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