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    • 2. 发明授权
    • Method and system to indicate an exception-triggering page within a microprocessor
    • 用于指示微处理器内的异常触发页面的方法和系统
    • US07689806B2
    • 2010-03-30
    • US11487284
    • 2006-07-14
    • Lucian CodrescuErich PlondkeMuhammad AhmedVijaya Kumar Janjanam
    • Lucian CodrescuErich PlondkeMuhammad AhmedVijaya Kumar Janjanam
    • G06F12/00G06F9/00
    • G06F12/1009G06F12/1027G06F2212/684
    • A method and system to indicate which page within a software-managed page table triggers an exception within a microprocessor, such as, for example, a digital signal processor, wherein a software-managed translation lookaside buffer (TLB) module receives a virtual address produced by an instruction within a Very Long Instruction Word (VLIW) packet, such as, for example, a fetch instruction, and further compares the virtual address to each stored TLB entry. If a match exists, then the TLB module outputs a corresponding mapped physical address for the instruction. Otherwise, if the VLIW packet spans two pages, where a first page is present as a TLB entry within the TLB module and the second page is missing from the stored TLB entries, an indication bit within a data field of a control register is set to identify the TLB miss exception to a software management unit. The software management unit retrieves the indication bit information from the register and further performs a page table look-up within the software-managed page table using the indication bit information in order to retrieve the missing page information. Subsequently, the missing page information is written into a new TLB entry within the TLB module for subsequent virtual address translation and execution of the packet of instructions.
    • 一种方法和系统,用于指示软件管理的页表内的哪个页面在微处理器(例如数字信号处理器)内触发异常,其中软件管理的翻译后备缓冲器(TLB)模块接收产生的虚拟地址 通过超长指令字(VLIW)分组(例如,取指令)中的指令,并且还将虚拟地址与每个存储的TLB条目进行比较。 如果匹配存在,则TLB模块输出相应的映射物理地址。 否则,如果VLIW分组跨越两页,其中第一页作为TLB模块中的TLB条目存在,并且第二页从存储的TLB条目丢失,则将控制寄存器的数据字段内的指示位设置为 识别软件管理单元的TLB错误异常。 软件管理单元从寄存器检索指示位信息,并使用指示位信息进一步在软件管理的页表中执行页表查找,以便检索丢失页信息。 随后,丢失的页面信息被写入TLB模块中的新TLB条目,用于随后的虚拟地址转换和指令分组的执行。
    • 3. 发明申请
    • Method and system to indicate an exception-triggering page within a microprocessor
    • 用于指示微处理器内的异常触发页面的方法和系统
    • US20080016316A1
    • 2008-01-17
    • US11487284
    • 2006-07-14
    • Lucian CodrescuErich PlondkeMuhammad AhmedVijaya Kumar Janjanam
    • Lucian CodrescuErich PlondkeMuhammad AhmedVijaya Kumar Janjanam
    • G06F12/00
    • G06F12/1009G06F12/1027G06F2212/684
    • A method and system to indicate which page within a software-managed page table triggers an exception within a microprocessor, such as, for example, a digital signal processor, wherein a software-managed translation lookaside buffer (TLB) module receives a virtual address produced by an instruction within a Very Long Instruction Word (VLIW) packet, such as, for example, a fetch instruction, and further compares the virtual address to each stored TLB entry. If a match exists, then the TLB module outputs a corresponding mapped physical address for the instruction. Otherwise, if the VLIW packet spans two pages, where a first page is present as a TLB entry within the TLB module and the second page is missing from the stored TLB entries, an indication bit within a data field of a control register is set to identify the TLB miss exception to a software management unit. The software management unit retrieves the indication bit information from the register and further performs a page table look-up within the software-managed page table using the indication bit information in order to retrieve the missing page information. Subsequently, the missing page information is written into a new TLB entry within the TLB module for subsequent virtual address translation and execution of the packet of instructions.
    • 一种方法和系统,用于指示软件管理的页表内的哪个页面在微处理器(例如数字信号处理器)内触发异常,其中软件管理的翻译后备缓冲器(TLB)模块接收产生的虚拟地址 通过超长指令字(VLIW)分组(例如,取指令)中的指令,并且还将虚拟地址与每个存储的TLB条目进行比较。 如果匹配存在,则TLB模块输出相应的映射物理地址。 否则,如果VLIW分组跨越两页,其中第一页作为TLB模块中的TLB条目存在,并且第二页从存储的TLB条目丢失,则将控制寄存器的数据字段内的指示位设置为 识别软件管理单元的TLB错误异常。 软件管理单元从寄存器检索指示位信息,并使用指示位信息进一步在软件管理的页表中执行页表查找,以便检索丢失页信息。 随后,丢失的页面信息被写入TLB模块中的新TLB条目,用于随后的虚拟地址转换和指令分组的执行。