Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar...
[linux-2.6-microblaze.git] / tools / perf / util / perf_regs.c
1 // SPDX-License-Identifier: GPL-2.0
2 #include <errno.h>
3 #include "perf_regs.h"
4 #include "event.h"
5
6 const struct sample_reg __weak sample_reg_masks[] = {
7         SMPL_REG_END
8 };
9
10 int __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
16 uint64_t __weak arch__intr_reg_mask(void)
17 {
18         return PERF_REGS_MASK;
19 }
20
21 uint64_t __weak arch__user_reg_mask(void)
22 {
23         return PERF_REGS_MASK;
24 }
25
26 #ifdef HAVE_PERF_REGS_SUPPORT
27 int 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
46 out:
47         *valp = regs->cache_regs[id];
48         return 0;
49 }
50 #endif