i think it works

code/boot/include/aarch64/efisetjmp_arch.h

@@ -0,0 +1,34 @@
+#ifndef GNU_EFI_AARCH64_SETJMP_H
+#define GNU_EFI_AARCH64_SETJMP_H
+
+#define JMPBUF_ALIGN 8
+
+typedef struct {
+	/* GP regs */
+	UINT64	X19;
+	UINT64	X20;
+	UINT64	X21;
+	UINT64	X22;
+	UINT64	X23;
+	UINT64	X24;
+	UINT64	X25;
+	UINT64	X26;
+	UINT64	X27;
+	UINT64	X28;
+	UINT64	FP;
+	UINT64	LR;
+	UINT64	IP0;
+	UINT64	_pad1;
+
+	/* FP regs */
+	UINT64	D8;
+	UINT64	D9;
+	UINT64	D10;
+	UINT64	D11;
+	UINT64	D12;
+	UINT64	D13;
+	UINT64	D14;
+	UINT64	D15;
+} EFI_ALIGN(JMPBUF_ALIGN) jmp_buf[1];
+
+#endif /* GNU_EFI_AARCH64_SETJMP_H */