i think it works

code/boot/include/loongarch64/efisetjmp_arch.h

@@ -0,0 +1,23 @@
+#ifndef GNU_EFI_LOONGARCH64_SETJMP_H
+#define GNU_EFI_LOONGARCH64_SETJMP_H
+
+#define JMPBUF_ALIGN 8
+
+typedef struct {
+	/* GP regs */
+	UINT64	RA;
+	UINT64	SP;
+	UINT64	FP;
+
+	UINT64	S0;
+	UINT64	S1;
+	UINT64	S2;
+	UINT64	S3;
+	UINT64	S4;
+	UINT64	S5;
+	UINT64	S6;
+	UINT64	S7;
+	UINT64	S8;
+} EFI_ALIGN(JMPBUF_ALIGN) jmp_buf[1];
+
+#endif /* GNU_EFI_LOONGARCH64_SETJMP_H */