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    • 6. 发明申请
    • System with wide operand architecture and method
    • 具有广泛操作数架构和方法的系统
    • US20040049663A1
    • 2004-03-11
    • US10436340
    • 2003-05-13
    • MICROUNITY SYSTEMS ENGINEERING, INC.
    • Craig HansenJohn Moussouris
    • G06F009/00
    • G06F9/30014G06F9/30018G06F9/30025G06F9/30029G06F9/30032G06F9/30036G06F9/3004G06F9/30043G06F9/30054G06F9/30087G06F9/30101G06F9/30109G06F9/30112G06F9/3012G06F9/30123G06F9/30145G06F9/3016G06F9/30167G06F9/3816G06F9/3824G06F9/383G06F9/3851G06F9/3861G06F9/3873G06F9/3885G06F15/7832
    • The present invention provides a system and method for expanding at least one source operand to a width greater than the width of either the general purpose register or the data path width. Operands are provided which are substantially larger than the data path width of the processor. A general purpose register is used to specify a memory address from which at least more than one, but typically several data path widths of data can be read. The data path functional unit is augmented with dedicated storage to which the memory operand is copied on an initial execution of the instruction. Further execution of the instruction or other similar instructions that specify the same memory address can read the dedicated storage to obtain the operand value. However, such reads are subject to conditions to verify that the memory operand has not been altered by intervening instructions. If the memory operand remains current, the memory operand fetch can be combined with one or more register operands in the functional unit, producing a result. The size of the result is, typically, constrained to that of a general register so that no dedicated or other special storage is required for the result.
    • 本发明提供一种用于将至少一个源操作数扩展到大于通用寄存器或数据路径宽度的宽度的宽度的系统和方法。 提供了比处理器的数据路径宽度大得多的操作数。 通用寄存器用于指定至少可以读取数据的数据路径宽度至少多于一个的存储器地址。 在指令的初始执行时,数据路径功能单元用专用存储器进行扩充,存储器操作数被复制到该存储器操作数。 指定相同存储器地址的指令或其他类似指令的进一步执行可以读取专用存储器以获得操作数值。 然而,这样的读取受到条件的限制,以验证内存操作数没有被干预指令改变。 如果存储器操作数保持当前,则存储器操作数获取可以与功能单元中的一个或多个寄存器操作数组合,产生结果。 结果的大小通常限制为通用寄存器的大小,因此不需要专用或其他特殊存储。