Method decodeInstruction

GPCS4/Graphics/Gcn/GcnDecoder.cpp:41–74

	}

	void GcnDecodeContext::decodeInstruction(GcnCodeSlice& code)
	{
		const uint32_t token = code.at(0);

		GcnInstEncoding encoding = getInstructionEncoding(token);
		LOG_ASSERT(encoding != GcnInstEncoding::ILLEGAL, "illegal encoding %d", encoding);
		uint32_t encodingLen = getEncodingLength(encoding);

		// Clear the instruction
		m_instruction = GcnShaderInstruction();
		// Decode
		if (encodingLen == sizeof(uint32_t))
		{
			decodeInstruction32(encoding, code);
		}
		else
		{
			decodeInstruction64(encoding, code);
		}

		// Update instruction meta info.
		updateInstructionMeta(encoding);

		// Detect literal constant.
		// Only 32 bits instructions may have literal constant.
		// Note:
		// Literal constant decode must be performed after meta info updated.
		if (encodingLen == sizeof(uint32_t))
		{
			decodeLiteralConstant(encoding, code);
		}

		repairOperandType();
	}

	GcnInstEncoding GcnDecodeContext::getInstructionEncoding(uint32_t hexInstruction)
	{