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    • 6. 发明授权
    • Method and apparatus for communicating between processing entities in a multi-processor
    • 用于在多处理器中的处理实体之间进行通信的方法和装置
    • US06976155B2
    • 2005-12-13
    • US09880621
    • 2001-06-12
    • Tracy Garrett DrysdaleScott P Bobholz
    • Tracy Garrett DrysdaleScott P Bobholz
    • G06F9/52G06F9/54G06F13/38G06F15/00
    • G06F9/544
    • A method and apparatus for synchronizing and communicating between processing entities, such as cores or threads, in a multiprocessor. Two registers are used as a “hardware mailbox” by two processing entities of a microprocessor. A first register is used to communicate information from a first processing entity to a second processing entity, while a second register is used to communication information from the second processing entity to the first processing entity. The first and second registers are cross-decoded by the two processing entities. One or more bits in each register are used to synchronize operation of the processing entities. In a microprocessor including three or more such processing entities, a read-write register of each processing entity holds outgoing information and a read-only register of each processing entity holds incoming information. A separate logic circuit logically combines the contents of the read-write registers and stores the result in the read-only registers.
    • 一种用于在多处理器中的处理实体(例如核心或线程)之间进行同步和通信的方法和装置。 两个寄存器被微处理器的两个处理实体用作“硬件邮箱”。 第一寄存器用于将信息从第一处理实体传送到第二处理实体,而第二寄存器用于将信息从第二处理实体传送到第一处理实体。 第一和第二寄存器被两个处理实体交叉解码。 每个寄存器中的一个或多个位用于同步处理实体的操作。 在包括三个或更多个这样的处理实体的微处理器中,每个处理实体的读写寄存器保存输出信息,并且每个处理实体的只读寄存器保存输入信息。 单独的逻辑电路逻辑组合读写寄存器的内容,并将结果存储在只读寄存器中。