47 lines
800 B
C
47 lines
800 B
C
// SPDX-License-Identifier: GPL-2.0
|
|
#include <errno.h>
|
|
#include "perf_regs.h"
|
|
#include "event.h"
|
|
|
|
int __weak arch_sdt_arg_parse_op(char *old_op __maybe_unused,
|
|
char **new_op __maybe_unused)
|
|
{
|
|
return SDT_ARG_SKIP;
|
|
}
|
|
|
|
uint64_t __weak arch__intr_reg_mask(void)
|
|
{
|
|
return PERF_REGS_MASK;
|
|
}
|
|
|
|
uint64_t __weak arch__user_reg_mask(void)
|
|
{
|
|
return PERF_REGS_MASK;
|
|
}
|
|
|
|
#ifdef HAVE_PERF_REGS_SUPPORT
|
|
int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
|
|
{
|
|
int i, idx = 0;
|
|
u64 mask = regs->mask;
|
|
|
|
if (regs->cache_mask & (1ULL << id))
|
|
goto out;
|
|
|
|
if (!(mask & (1ULL << id)))
|
|
return -EINVAL;
|
|
|
|
for (i = 0; i < id; i++) {
|
|
if (mask & (1ULL << i))
|
|
idx++;
|
|
}
|
|
|
|
regs->cache_mask |= (1ULL << id);
|
|
regs->cache_regs[id] = regs->regs[idx];
|
|
|
|
out:
|
|
*valp = regs->cache_regs[id];
|
|
return 0;
|
|
}
|
|
#endif
|