1 files changed, 129 insertions, 0 deletions
diff --git a/tools/perf/util/perf_regs.c b/tools/perf/util/perf_regs.c
new file mode 100644
index 0000000000..e2275856b5
--- /dev/null
+++ b/tools/perf/util/perf_regs.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <errno.h>
+#include <string.h>
+#include "perf_regs.h"
+#include "util/sample.h"
+#include "debug.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 0;
+}
+
+uint64_t __weak arch__user_reg_mask(void)
+{
+	return 0;
+}
+
+#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;
+}
+
+uint64_t perf_arch_reg_ip(const char *arch)
+{
+	if (!strcmp(arch, "arm"))
+		return __perf_reg_ip_arm();
+	else if (!strcmp(arch, "arm64"))
+		return __perf_reg_ip_arm64();
+	else if (!strcmp(arch, "csky"))
+		return __perf_reg_ip_csky();
+	else if (!strcmp(arch, "loongarch"))
+		return __perf_reg_ip_loongarch();
+	else if (!strcmp(arch, "mips"))
+		return __perf_reg_ip_mips();
+	else if (!strcmp(arch, "powerpc"))
+		return __perf_reg_ip_powerpc();
+	else if (!strcmp(arch, "riscv"))
+		return __perf_reg_ip_riscv();
+	else if (!strcmp(arch, "s390"))
+		return __perf_reg_ip_s390();
+	else if (!strcmp(arch, "x86"))
+		return __perf_reg_ip_x86();
+
+	pr_err("Fail to find IP register for arch %s, returns 0\n", arch);
+	return 0;
+}
+
+uint64_t perf_arch_reg_sp(const char *arch)
+{
+	if (!strcmp(arch, "arm"))
+		return __perf_reg_sp_arm();
+	else if (!strcmp(arch, "arm64"))
+		return __perf_reg_sp_arm64();
+	else if (!strcmp(arch, "csky"))
+		return __perf_reg_sp_csky();
+	else if (!strcmp(arch, "loongarch"))
+		return __perf_reg_sp_loongarch();
+	else if (!strcmp(arch, "mips"))
+		return __perf_reg_sp_mips();
+	else if (!strcmp(arch, "powerpc"))
+		return __perf_reg_sp_powerpc();
+	else if (!strcmp(arch, "riscv"))
+		return __perf_reg_sp_riscv();
+	else if (!strcmp(arch, "s390"))
+		return __perf_reg_sp_s390();
+	else if (!strcmp(arch, "x86"))
+		return __perf_reg_sp_x86();
+
+	pr_err("Fail to find SP register for arch %s, returns 0\n", arch);
+	return 0;
+}
+
+#endif