Return empty ESIL for new instructions which have immediates where pr…

…eviously regs were assumed.

librz/analysis/arch/arm/arm_esil64.c

@@ -244,6 +244,9 @@ static void shifted_reg64_append(RzStrBuf *sb, csh *handle, cs_insn *insn, int n
 // got rid of the opchar= pattern here because it caused missing operators to fail silently
 // and makes things more complicated with very little benefit
 static void arm64math(RzAnalysis *a, RzAnalysisOp *op, ut64 addr, const ut8 *buf, int len, csh *handle, cs_insn *insn, const char *opchar, int negate) {
+	if (ISIMM64(0) || ISIMM64(1)) {
+		return;
+	}
 	const char *r0 = REG64(0);
 	const char *r1 = REG64(1);
 

test/db/esil/arm_64

@@ -899,3 +899,18 @@ EXPECT=<<EOF
 x0 = 0x0000000000000005
 EOF
 RUN
+
+NAME=orr   v22.4h, 0, lsl 8
+FILE=malloc://0x200
+CMDS=<<EOF
+e asm.arch=arm
+e asm.bits=64
+wx 16b4000f # orr   v22.4h, 0, lsl 8
+pd 1
+pie 1
+EOF
+EXPECT=<<EOF
+            0x00000000      orr   v22.4h, 0, lsl 8
+0x00000000 
+EOF
+RUN