发明申请
US20070061553A1 Byte Execution Unit for Carrying Out Byte Instructions in a Processor
审中-公开
在处理器中执行字节指令的字节执行单元
- 专利标题: Byte Execution Unit for Carrying Out Byte Instructions in a Processor
- 专利标题(中): 在处理器中执行字节指令的字节执行单元
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申请号: US11555513申请日: 2006-11-01
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公开(公告)号: US20070061553A1公开(公告)日: 2007-03-15
- 发明人: Sang Dhong , Hwa-Joon Oh , Brad Michael , Silvia Mueller , Kevin Tran
- 申请人: Sang Dhong , Hwa-Joon Oh , Brad Michael , Silvia Mueller , Kevin Tran
- 主分类号: G06F9/44
- IPC分类号: G06F9/44
摘要:
A disclosed byte execution unit receives byte instruction information and two operands, and performs an operation specified by the byte instruction information upon one or both of the operands, thereby producing a result. The byte instruction specifies either a count ones in bytes operation, an average bytes operation, an absolute differences of bytes operation, or a sum bytes into halfwords operation. In one embodiment, the byte execution unit includes multiple byte units. Each byte unit includes multiple population counters, two compressor units, adder input multiplexer logic, adder logic, and result multiplexer logic. A data processing system is described including a processor coupled to a memory system. The processor includes the byte execution unit. The memory system includes a byte instruction, wherein the byte instruction specifies either the count ones in bytes operation, the average bytes operation, the absolute differences of bytes operation, or the sum bytes into halfwords operation.