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1. 发明授权

US08151093B2 Software programmable hardware state machines 有权
标题翻译：软件可编程硬件状态机
公开(公告)号：US08151093B2
公开(公告)日：2012-04-03
申请号：US11517569
申请日：2006-09-08
申请人： Soumya Banerjee , Gideon D. Intrater , Michael Gottlieb Jensen
发明人： Soumya Banerjee , Gideon D. Intrater , Michael Gottlieb Jensen
IPC分类号： G06F9/00
CPC分类号： G06F11/2236
摘要： The present invention provides software programmable hardware state machines to detect a cause of an error in a processor and prevent the error from occurring. In example embodiments, processors, systems and methods are provided to prevent an unwanted change in architectural state from occurring as a result of execution of a specific sequence of instruction types. A processor core is provided that includes an execution unit, a programmable mask register and a buffer that stores values representing instructions dispatched to the execution unit. The processor core also includes control logic to determine whether there is a match between a sequence in the mask register and a sequence in the buffer and, upon detecting a match, to generate control signals to perform a desired action. The desired action prevents an unwanted change from occurring to the architectural state of the processor. The desired action may be preventing the dispatch of a next instruction, flushing a pipeline, clearing an instruction fetch buffer, generating an exception etc. The processor core further comprises a programmable fix register. In an embodiment, the control logic generates the control signals based on control bits stored in the fix register.
摘要翻译：本发明提供了用于检测处理器中的错误原因的软件可编程硬件状态机，并防止发生错误。在示例实施例中，提供了处理器，系统和方法，以防止由于执行特定指令序列类型而导致架构状态的不期望的改变。提供了一种处理器核心，其包括执行单元，可编程屏蔽寄存器和存储表示分配给执行单元的指令的值的缓冲器。处理器核心还包括控制逻辑以确定掩模寄存器中的序列与缓冲器中的序列之间是否存在匹配，并且在检测到匹配时，产生控制信号以执行期望的动作。期望的操作防止对处理器的架构状态发生不期望的改变。期望的动作可能是阻止下一条指令的调度，冲洗流水线，清除指令获取缓冲区，产生异常等。处理器核心还包括可编程固定寄存器。在一个实施例中，控制逻辑基于存储在定位寄存器中的控制位产生控制信号。

2. 发明申请

US20090327649A1 Three-Tiered Translation Lookaside Buffer Hierarchy in a Multithreading Microprocessor 有权
标题翻译：多线程微处理器中的三层翻译后备缓冲层次结构
公开(公告)号：US20090327649A1
公开(公告)日：2009-12-31
申请号：US12495375
申请日：2009-06-30
申请人： Soumya BANERJEE , Michael Gottlieb Jensen , Ryan C. Kinter
发明人： Soumya BANERJEE , Michael Gottlieb Jensen , Ryan C. Kinter
IPC分类号： G06F12/10 , G06F12/00
CPC分类号： G06F12/1027 , G06F2212/681
摘要： A three-tiered TLB architecture in a multithreading processor that concurrently executes multiple instruction threads is provided. A macro-TLB caches address translation information for memory pages for all the threads. A micro-TLB caches the translation information for a subset of the memory pages cached in the macro-TLB. A respective nano-TLB for each of the threads caches translation information only for the respective thread. The nano-TLBs also include replacement information to indicate which entries in the nano-TLB/micro-TLB hold recently used translation information for the respective thread. Based on the replacement information, recently used information is copied to the nano-TLB if evicted from the micro-TLB.
摘要翻译：提供了同时执行多个指令线程的多线程处理器中的三层TLB架构。宏TLB缓存所有线程的内存页面的地址转换信息。微型TLB缓存缓存在宏TLB中的存储器页面的子集的翻译信息。用于每个线程的相应的nano-TLB仅缓存针对相应线程的转换信息。纳米TLB还包括替换信息以指示nano-TLB / micro-TLB中的哪些条目最近使用相应线程的翻译信息。根据替换信息，如果从微型TLB迁移，最近使用的信息被复制到nano-TLB。

3. 发明申请

US20080065868A1 Software programmable hardware state machines 有权
标题翻译：软件可编程硬件状态机
公开(公告)号：US20080065868A1
公开(公告)日：2008-03-13
申请号：US11517569
申请日：2006-09-08
申请人： Soumya Banerjee , Gideon D. Intrater , Michael Gottlieb Jensen
发明人： Soumya Banerjee , Gideon D. Intrater , Michael Gottlieb Jensen
IPC分类号： G06F9/44
CPC分类号： G06F11/2236
摘要： The present invention provides software programmable hardware state machines to detect a cause of an error in a processor and prevent the error from occurring. In example embodiments, processors, systems and methods are provided to prevent an unwanted change in architectural state from occurring as a result of execution of a specific sequence of instruction types. A processor core is provided that includes an execution unit, a programmable mask register and a buffer that stores values representing instructions dispatched to the execution unit. The processor core also includes control logic to determine whether there is a match between a sequence in the mask register and a sequence in the buffer and, upon detecting a match, to generate control signals to perform a desired action. The desired action prevents an unwanted change from occurring to the architectural state of the processor. The desired action may be preventing the dispatch of a next instruction, flushing a pipeline, clearing an instruction fetch buffer, generating an exception etc. The processor core further comprises a programmable fix register. In an embodiment, the control logic generates the control signals based on control bits stored in the fix register.
摘要翻译：本发明提供了用于检测处理器中的错误原因的软件可编程硬件状态机，并防止发生错误。在示例实施例中，提供了处理器，系统和方法，以防止由于执行特定指令序列类型而导致架构状态的不期望的改变。提供了一种处理器核心，其包括执行单元，可编程屏蔽寄存器和存储表示分配给执行单元的指令的值的缓冲器。处理器核心还包括控制逻辑以确定掩模寄存器中的序列与缓冲器中的序列之间是否存在匹配，并且在检测到匹配时，产生控制信号以执行期望的动作。期望的操作防止对处理器的架构状态发生不期望的改变。期望的动作可能是阻止下一条指令的调度，冲洗流水线，清除指令获取缓冲区，产生异常等。处理器核心还包括可编程固定寄存器。在一个实施例中，控制逻辑基于存储在定位寄存器中的控制位产生控制信号。

4. 发明授权

US07925859B2 Three-tiered translation lookaside buffer hierarchy in a multithreading microprocessor 有权
标题翻译：多线程微处理器中的三层翻译后备缓冲层次结构
公开(公告)号：US07925859B2
公开(公告)日：2011-04-12
申请号：US12495375
申请日：2009-06-30
申请人： Soumya Banerjee , Michael Gottlieb Jensen , Ryan C. Kinter
发明人： Soumya Banerjee , Michael Gottlieb Jensen , Ryan C. Kinter
IPC分类号： G06F12/00
CPC分类号： G06F12/1027 , G06F2212/681
摘要： A three-tiered TLB architecture in a multithreading processor that concurrently executes multiple instruction threads is provided. A macro-TLB caches address translation information for memory pages for all the threads. A micro-TLB caches the translation information for a subset of the memory pages cached in the macro-TLB. A respective nano-TLB for each of the threads caches translation information only for the respective thread. The nano-TLBs also include replacement information to indicate which entries in the nano-TLB/micro-TLB hold recently used translation information for the respective thread. Based on the replacement information, recently used information is copied to the nano-TLB if evicted from the micro-TLB.
摘要翻译：提供了同时执行多个指令线程的多线程处理器中的三层TLB架构。宏TLB缓存所有线程的内存页面的地址转换信息。微型TLB缓存缓存在宏TLB中的存储器页面的子集的翻译信息。用于每个线程的相应的nano-TLB仅缓存针对相应线程的转换信息。纳米TLB还包括替换信息以指示nano-TLB / micro-TLB中的哪些条目最近使用相应线程的翻译信息。根据替换信息，如果从微型TLB迁移，最近使用的信息被复制到nano-TLB。

5. 发明授权

US07558939B2 Three-tiered translation lookaside buffer hierarchy in a multithreading microprocessor 有权
标题翻译：多线程微处理器中的三层翻译后备缓冲层次结构
公开(公告)号：US07558939B2
公开(公告)日：2009-07-07
申请号：US11075041
申请日：2005-03-08
申请人： Soumya Banerjee , Michael Gottlieb Jensen , Ryan C. Kinter
发明人： Soumya Banerjee , Michael Gottlieb Jensen , Ryan C. Kinter
IPC分类号： G06F12/00
CPC分类号： G06F12/1027 , G06F2212/681
摘要： A three-tiered TLB architecture in a multithreading processor that concurrently executes multiple instruction threads is provided. A macro-TLB caches address translation information for memory pages for all the threads. A micro-TLB caches the translation information for a subset of the memory pages cached in the macro-TLB. A respective nano-TLB for each of the threads caches translation information only for the respective thread. The nano-TLBs also include replacement information to indicate which entries in the nano-TLB/micro-TLB hold recently used translation information for the respective thread. Based on the replacement information, recently used information is copied to the nano-TLB if evicted from the micro-TLB.
摘要翻译：提供了同时执行多个指令线程的多线程处理器中的三层TLB架构。宏TLB缓存所有线程的内存页面的地址转换信息。微型TLB缓存缓存在宏TLB中的存储器页面的子集的翻译信息。用于每个线程的相应的nano-TLB仅缓存针对相应线程的转换信息。纳米TLB还包括替换信息，以指示nano-TLB / micro-TLB中的哪些条目最近使用相应线程的翻译信息。根据替换信息，如果从微型TLB迁移，最近使用的信息被复制到nano-TLB。

6. 发明授权

US08078840B2 Thread instruction fetch based on prioritized selection from plural round-robin outputs for different thread states 有权
标题翻译：基于针对不同线程状态的多个循环输出的优先选择进行线程指令读取
公开(公告)号：US08078840B2
公开(公告)日：2011-12-13
申请号：US12346652
申请日：2008-12-30
申请人： Soumya Banerjee , Michael Gottlieb Jensen
发明人： Soumya Banerjee , Michael Gottlieb Jensen
IPC分类号： G06F9/46
CPC分类号： G06F9/3851 , G06F9/3802 , G06F9/3814
摘要： A fetch director in a multithreaded microprocessor that concurrently executes instructions of N threads is disclosed. The N threads request to fetch instructions from an instruction cache. In a given selection cycle, some of the threads may not be requesting to fetch instructions. The fetch director includes a circuit for selecting one of threads in a round-robin fashion to provide its fetch address to the instruction cache. The circuit 1-bit left rotatively increments a first addend by a second addend to generate a sum that is ANDed with the inverse of the first addend to generate a 1-hot vector indicating which of the threads is selected next. The first addend is an N-bit vector where each bit is false if the corresponding thread is requesting to fetch instructions from the instruction cache. The second addend is a 1-hot vector indicating the last selected thread. In one embodiment threads with an empty instruction buffer are selected at highest priority; a last dispatched but not fetched thread at middle priority; all other threads at lowest priority. The threads are selected round-robin within the highest and lowest priorities.
摘要翻译：公开了并行执行N线程指令的多线程微处理器中的提取指导者。 N线程请求从指令高速缓存获取指令。在给定的选择周期中，某些线程可能没有请求获取指令。提取指导器包括用于以循环方式选择线程之一以将其提取地址提供给指令高速缓存的电路。 1位左电路通过第二加数旋转地增加第一加数，以产生与第一加数的反相并联的和，以产生指示下一个选择的线程的1-hot向量。第一个加数是一个N位向量，如果相应的线程请求从指令高速缓存中获取指令，则每个位都为假。第二个加法是指示最后选择的线程的1-hot向量。在一个实施例中，以最高优先级选择具有空指令缓冲器的线程; 中间优先级的最后发送但未获取的线程; 所有其他线程的优先级最低。线程在最高和最低优先级内选择循环。

7. 发明申请

US20080177990A1 Synthesized assertions in a self-correcting processor and applications thereof 审中-公开
标题翻译：自校正处理器中的合成断言及其应用
公开(公告)号：US20080177990A1
公开(公告)日：2008-07-24
申请号：US11655267
申请日：2007-01-19
申请人： Soumya Banerjee , Michael Gottlieb Jensen
发明人： Soumya Banerjee , Michael Gottlieb Jensen
IPC分类号： G06F9/445
CPC分类号： G06F11/0751 , G06F9/30156 , G06F9/3802 , G06F9/3806 , G06F9/3861 , G06F11/0721
摘要： The present invention provides one or more synthesized assertions in a self-correcting processor, and applications thereof. In an embodiment, a synthesized assertion detects a mismatch between actual processor behavior and specified or expected processor behavior. When unexpected processor behavior is encountered, the synthesized assertion alters operation of the processor and causes the processor to behave in the specified or expected manner. Synthesized assertions in accordance with the present invention can detect and correct, for example, exception processing errors, instruction address errors, instruction opcode errors, and errors that can cause a processor to stall, as well as various other types of errors.
摘要翻译：本发明在自校正处理器中提供一个或多个合成断言及其应用。在一个实施例中，合成断言检测实际处理器行为与指定或期望的处理器行为之间的不匹配。当遇到意外处理器行为时，合成断言改变处理器的操作，并使处理器以指定或预期的方式运行。根据本发明的合成断言可以检测和纠正例如异常处理错误，指令地址错误，指令操作码错误以及可能导致处理器停止的错误以及各种其它类型的错误。

8. 发明申请

US20090113180A1 Fetch Director Employing Barrel-Incrementer-Based Round-Robin Apparatus For Use In Multithreading Microprocessor 有权
标题翻译：获取主任采用基于桶式增量器的循环设备，用于多线程微处理器
公开(公告)号：US20090113180A1
公开(公告)日：2009-04-30
申请号：US12346652
申请日：2008-12-30
申请人： Soumya Banerjee , Michael Gottlieb Jensen
发明人： Soumya Banerjee , Michael Gottlieb Jensen
IPC分类号： G06F9/312
CPC分类号： G06F9/3851 , G06F9/3802 , G06F9/3814
摘要： A fetch director in a multithreaded microprocessor that concurrently executes instructions of N threads is disclosed. The N threads request to fetch instructions from an instruction cache. In a given selection cycle, some of the threads may not be requesting to fetch instructions. The fetch director includes a circuit for selecting one of threads in a round-robin fashion to provide its fetch address to the instruction cache. The circuit 1-bit left rotatively increments a first addend by a second addend to generate a sum that is ANDed with the inverse of the first addend to generate a 1-hot vector indicating which of the threads is selected next. The first addend is an N-bit vector where each bit is false if the corresponding thread is requesting to fetch instructions from the instruction cache. The second addend is a 1-hot vector indicating the last selected thread. In one embodiment threads with an empty instruction buffer are selected at highest priority; a last dispatched but not fetched thread at middle priority; all other threads at lowest priority. The threads are selected round-robin within the highest and lowest priorities.
摘要翻译：公开了并行执行N线程指令的多线程微处理器中的提取指导者。 N线程请求从指令高速缓存获取指令。在给定的选择周期中，某些线程可能没有请求获取指令。提取指导器包括用于以循环方式选择线程之一以将其提取地址提供给指令高速缓存的电路。 1位左电路通过第二加数旋转地增加第一加数，以产生与第一加数的反相并联的和，以产生指示下一个选择的线程的1-hot向量。第一个加数是一个N位向量，如果相应的线程请求从指令高速缓存中获取指令，则每个位都为假。第二个加法是指示最后选择的线程的1-hot向量。在一个实施例中，以最高优先级选择具有空指令缓冲器的线程; 中间优先级的最后发送但未获取的线程; 所有其他线程的优先级最低。线程在最高和最低优先级内选择循环。

9. 发明授权

US07490230B2 Fetch director employing barrel-incrementer-based round-robin apparatus for use in multithreading microprocessor 有权
标题翻译： Fetch Director采用基于桶式增量器的循环设备，用于多线程微处理器
公开(公告)号：US07490230B2
公开(公告)日：2009-02-10
申请号：US11087063
申请日：2005-03-22
申请人： Michael Gottlieb Jensen , Soumya Banerjee
发明人： Michael Gottlieb Jensen , Soumya Banerjee
IPC分类号： G06F9/50
CPC分类号： G06F9/3851 , G06F9/3802 , G06F9/3814
摘要： A fetch director in a multithreaded microprocessor that concurrently executes instructions of N threads is disclosed. The N threads request to fetch instructions from an instruction cache. In a given selection cycle, some of the threads may not be requesting to fetch instructions. The fetch director includes a circuit for selecting one of threads in a round-robin fashion to provide its fetch address to the instruction cache. The circuit adds a first addend to a 1-bit left-rotated version of a second addend to generate a sum and a carry-out bit. The circuit includes the carry-out bit as a carry-in bit of the add to generate the sum. The sum is ANDed with the inverse of the first addend to generate a 1-hot vector indicating which of the threads is selected next. The first addend is an N-bit vector where each bit is false if the corresponding thread is requesting to fetch instructions from the instruction cache. The second addend is a 1-hot vector indicating the last selected thread. In one embodiment threads with an empty instruction buffer are selected at highest priority; a last dispatched but not fetched thread at middle priority; all other threads at lowest priority. The threads are selected round-robin within the highest and lowest priorities.
摘要翻译：公开了并行执行N线程指令的多线程微处理器中的提取指导者。 N线程请求从指令高速缓存获取指令。在给定的选择周期中，某些线程可能没有请求获取指令。提取指导器包括用于以循环方式选择线程之一以将其提取地址提供给指令高速缓存的电路。该电路将第一个加数添加到第二加数的1位左旋转版本中，以产生一个和和一个进位位。该电路包括作为加法的进位位的进位位以产生和。该和与第一个加法项的倒数相加以产生一个1-热向量，指示下一个选择的线程。第一个加数是一个N位向量，如果相应的线程请求从指令高速缓存中获取指令，则每个位都为假。第二个加法是指示最后选择的线程的1-hot向量。在一个实施例中，以最高优先级选择具有空指令缓冲器的线程; 中间优先级的最后发送但未获取的线程; 所有其他线程的优先级最低。线程在最高和最低优先级内选择循环。

10. 发明授权

US08151268B2 Multithreading microprocessor with optimized thread scheduler for increasing pipeline utilization efficiency 有权
标题翻译：具有优化线程调度器的多线程微处理器，可提高管道利用效率
公开(公告)号：US08151268B2
公开(公告)日：2012-04-03
申请号：US12684564
申请日：2010-01-08
申请人： Darren M. Jones , Ryan C. Kinter , Michael Gottlieb Jensen , Sanjay Vishin
发明人： Darren M. Jones , Ryan C. Kinter , Michael Gottlieb Jensen , Sanjay Vishin
IPC分类号： G06F9/46 , G06F15/00
CPC分类号： G06F9/3851 , G06F9/30079 , G06F9/30087 , G06F9/3009 , G06F9/3867
摘要： A multithreading processor for concurrently executing multiple threads is provided. The processor includes an execution pipeline and a thread scheduler that dispatches instructions of the threads to the execution pipeline. The execution pipeline execution pipeline is configured for generating a thread context (TC) flush indicator associated with a thread context when one or more instructions of the thread context would stall in the execution pipeline. One or more instructions in the pipeline of the thread context associated with the thread context flush signal can be flushed or nullified.
摘要翻译：提供了用于同时执行多个线程的多线程处理器。该处理器包括一个执行流水线和一个线程调度器，它将线程的指令分派到执行流水线。执行流水线被配置为当线程上下文的一个或多个指令在执行流水线中停止时，生成与线程上下文相关联的线程上下文（TC）刷新指示符。与线程上下文冲洗信号相关联的线程上下文中的一个或多个指令可被刷新或无效。

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