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// SPDX-License-Identifier: GPL-2.0
#include <errno.h>
#include <string.h>
#include "perf_regs.h"
#include "util/sample.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
const char *perf_reg_name(int id, const char *arch)
{
const char *reg_name = NULL;
if (!strcmp(arch, "csky"))
reg_name = __perf_reg_name_csky(id);
else if (!strcmp(arch, "loongarch"))
reg_name = __perf_reg_name_loongarch(id);
else if (!strcmp(arch, "mips"))
reg_name = __perf_reg_name_mips(id);
else if (!strcmp(arch, "powerpc"))
reg_name = __perf_reg_name_powerpc(id);
else if (!strcmp(arch, "riscv"))
reg_name = __perf_reg_name_riscv(id);
else if (!strcmp(arch, "s390"))
reg_name = __perf_reg_name_s390(id);
else if (!strcmp(arch, "x86"))
reg_name = __perf_reg_name_x86(id);
else if (!strcmp(arch, "arm"))
reg_name = __perf_reg_name_arm(id);
else if (!strcmp(arch, "arm64"))
reg_name = __perf_reg_name_arm64(id);
return reg_name ?: "unknown";
}
int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
{
int i, idx = 0;
u64 mask = regs->mask;
if ((u64)id >= PERF_SAMPLE_REGS_CACHE_SIZE)
return -EINVAL;
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
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