add arm/arm64 byte code comment

Author: pkujhd

asm_bytes.go

@@ -8,8 +8,10 @@ const (
 
 // arm/arm64
 var (
-	armcode   = []byte{0x04, 0xF0, 0x1F, 0xE5}
-	arm64code = []byte{0x49, 0x00, 0x00, 0x58, 0x20, 0x01, 0x1F, 0xD6}
+	armcode   = []byte{0x04, 0xF0, 0x1F, 0xE5} //LDR PC, [PC, #-4]
+	arm64code = []byte{
+		0x49, 0x00, 0x00, 0x58, // LDR X9 [PC+8]
+		0x20, 0x01, 0x1F, 0xD6} // BR X9
 )
 
 // x86/amd64