Added support for exposing opcode in disassembled object

cs.c

@@ -1190,6 +1190,7 @@ size_t CAPSTONE_API cs_disasm(csh ud, const uint8_t *buffer, size_t size, uint64
 
 			handle->printer(&mci, &ss, handle->printer_info);
 			fill_insn(handle, insn_cache, ss.buffer, &mci, handle->post_printer, buffer);
+			insn_cache->opcode = mci.Opcode;
 
 			// adjust for pseudo opcode (X86)
 			if (handle->arch == CS_ARCH_X86)
@@ -1396,6 +1397,7 @@ bool CAPSTONE_API cs_disasm_iter(csh ud, const uint8_t **code, size_t *size,
 		handle->printer(&mci, &ss, handle->printer_info);
 
 		fill_insn(handle, insn, ss.buffer, &mci, handle->post_printer, *code);
+		insn->opcode = mci.Opcode;
 
 		// adjust for pseudo opcode (X86)
 		if (handle->arch == CS_ARCH_X86)

include/capstone/capstone.h

@@ -473,6 +473,9 @@ typedef struct cs_insn {
 	/// NOTE 2: when in Skipdata mode, or when detail mode is OFF, even if this pointer
 	///     is not NULL, its content is still irrelevant.
 	cs_detail *detail;
+
+	/// The internal opcode of this instruction
+	unsigned int opcode;
 } cs_insn;