1 files changed, 82 insertions, 0 deletions
diff --git a/tools/perf/arch/loongarch/util/unwind-libunwind.c b/tools/perf/arch/loongarch/util/unwind-libunwind.c
new file mode 100644
index 000000000000..f693167b86ef
--- /dev/null
+++ b/tools/perf/arch/loongarch/util/unwind-libunwind.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <errno.h>
+#include <libunwind.h>
+#include "perf_regs.h"
+#include "../../util/unwind.h"
+#include "util/debug.h"
+
+int libunwind__arch_reg_id(int regnum)
+{
+	switch (regnum) {
+	case UNW_LOONGARCH64_R1:
+		return PERF_REG_LOONGARCH_R1;
+	case UNW_LOONGARCH64_R2:
+		return PERF_REG_LOONGARCH_R2;
+	case UNW_LOONGARCH64_R3:
+		return PERF_REG_LOONGARCH_R3;
+	case UNW_LOONGARCH64_R4:
+		return PERF_REG_LOONGARCH_R4;
+	case UNW_LOONGARCH64_R5:
+		return PERF_REG_LOONGARCH_R5;
+	case UNW_LOONGARCH64_R6:
+		return PERF_REG_LOONGARCH_R6;
+	case UNW_LOONGARCH64_R7:
+		return PERF_REG_LOONGARCH_R7;
+	case UNW_LOONGARCH64_R8:
+		return PERF_REG_LOONGARCH_R8;
+	case UNW_LOONGARCH64_R9:
+		return PERF_REG_LOONGARCH_R9;
+	case UNW_LOONGARCH64_R10:
+		return PERF_REG_LOONGARCH_R10;
+	case UNW_LOONGARCH64_R11:
+		return PERF_REG_LOONGARCH_R11;
+	case UNW_LOONGARCH64_R12:
+		return PERF_REG_LOONGARCH_R12;
+	case UNW_LOONGARCH64_R13:
+		return PERF_REG_LOONGARCH_R13;
+	case UNW_LOONGARCH64_R14:
+		return PERF_REG_LOONGARCH_R14;
+	case UNW_LOONGARCH64_R15:
+		return PERF_REG_LOONGARCH_R15;
+	case UNW_LOONGARCH64_R16:
+		return PERF_REG_LOONGARCH_R16;
+	case UNW_LOONGARCH64_R17:
+		return PERF_REG_LOONGARCH_R17;
+	case UNW_LOONGARCH64_R18:
+		return PERF_REG_LOONGARCH_R18;
+	case UNW_LOONGARCH64_R19:
+		return PERF_REG_LOONGARCH_R19;
+	case UNW_LOONGARCH64_R20:
+		return PERF_REG_LOONGARCH_R20;
+	case UNW_LOONGARCH64_R21:
+		return PERF_REG_LOONGARCH_R21;
+	case UNW_LOONGARCH64_R22:
+		return PERF_REG_LOONGARCH_R22;
+	case UNW_LOONGARCH64_R23:
+		return PERF_REG_LOONGARCH_R23;
+	case UNW_LOONGARCH64_R24:
+		return PERF_REG_LOONGARCH_R24;
+	case UNW_LOONGARCH64_R25:
+		return PERF_REG_LOONGARCH_R25;
+	case UNW_LOONGARCH64_R26:
+		return PERF_REG_LOONGARCH_R26;
+	case UNW_LOONGARCH64_R27:
+		return PERF_REG_LOONGARCH_R27;
+	case UNW_LOONGARCH64_R28:
+		return PERF_REG_LOONGARCH_R28;
+	case UNW_LOONGARCH64_R29:
+		return PERF_REG_LOONGARCH_R29;
+	case UNW_LOONGARCH64_R30:
+		return PERF_REG_LOONGARCH_R30;
+	case UNW_LOONGARCH64_R31:
+		return PERF_REG_LOONGARCH_R31;
+	case UNW_LOONGARCH64_PC:
+		return PERF_REG_LOONGARCH_PC;
+	default:
+		pr_err("unwind: invalid reg id %d\n", regnum);
+		return -EINVAL;
+	}
+
+	return -EINVAL;
+}