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1. 发明申请

WO2007148132A1 METHOD AND APPARATUS FOR HANDLING EXCEPTIONS DURING BINDING TO NATIVE CODE 审中-公开
标题翻译：在绑定到本规范期间处理例外的方法和装置
公开(公告)号：WO2007148132A1
公开(公告)日：2007-12-27
申请号：PCT/GB2007/050343
申请日：2007-06-19
申请人： TRANSITIVE LIMITED , BARRACLOUGH, Gavin , WAN, Kit, Man , HUMMAIDA, Abdul, Rahman
发明人： BARRACLOUGH, Gavin , WAN, Kit, Man , HUMMAIDA, Abdul, Rahman
IPC分类号： G06F9/45 , G06F9/42
CPC分类号： G06F9/45516 , G06F2209/481
摘要： A target computing system (10) is arranged to perform program code conversion from subject code (17) executable by a subject computing architecture (1) into target code (21) executable by the target computing system (10), and then execute the target code (21). In one embodiment, the target computing system (10) performs dynamic binary translation. Also, the target computing system (10) handles exceptions during binding to native code. Here, native code binding executes a portion of native code (28) (e.g. a native library function) in place of translating a portion of the subject code (17) (e.g. a subject library function) into the target code (21). When an exception occurs during execution of the portion of native code (28), the target computing system (10) saves a target state (T') which represents a current point of execution for the portion of native code (28), and creates a subject state (S') which represents an emulated point of execution in the subject computing architecture (1). The exception is handled through a subject exception handler unit (170, 170') with reference to the subject state (S'), such that, upon resuming execution from the exception using the provided subject state (S'), the saved target state (T') is restored to resume execution in the section of portion of native code (28). In one embodiment, the subject state (S') links to the saved target state (T') through a recovery unit (192).
摘要翻译：目标计算系统（10）被布置为执行由主体计算架构（1）可执行的主题代码（17）的程序代码转换为可由目标计算系统（10）执行的目标代码（21），然后执行目标代码（21）。在一个实施例中，目标计算系统（10）执行动态二进制转换。此外，目标计算系统（10）在绑定到本机代码期间处理异常。这里，本地代码绑定执行本地代码（28）的一部分（例如本地库函数），代替将主题代码（17）的一部分（例如，主题库函数）转换为目标代码（21）。当执行本机代码部分（28）期间出现异常时，目标计算系统（10）保存表示本地代码（28）部分的当前执行点的目标状态（T'），并创建主题状态（S'），其表示主体计算架构（1）中的仿真执行点。通过参照对象状态（S'）的主题异常处理单元（170,170'）来处理异常，使得当使用所提供的主体状态（S'）从异常恢复执行时，保存的目标状态（T'）被恢复以在本地代码（28）的部分的部分中恢复执行。在一个实施例中，主体状态（S'）通过恢复单元（192）链接到保存的目标状态（T'）。

2. 发明申请

WO2006111705A2 METHOD AND APPARATUS FOR PRECISE HANDLING OF EXCEPTIONS DURING PROGRAM CODE CONVERSION 审中-公开
标题翻译：在程序代码转换期间精确处理异常的方法和装置
公开(公告)号：WO2006111705A2
公开(公告)日：2006-10-26
申请号：PCT/GB2006/001268
申请日：2006-04-07
申请人： TRANSITIVE LIMITED , BARRACLOUGH, Gavin , WAN, Kit, Man , HUMMAIDA, Abdul, Rahman
发明人： BARRACLOUGH, Gavin , WAN, Kit, Man , HUMMAIDA, Abdul, Rahman
IPC分类号： G06F9/38
CPC分类号： G06F9/3863 , G06F9/45504 , G06F9/45533 , G06F2209/481
摘要： Precise exception handling relies on a precise subject state including an accurate program counter and register values of a subject processor. Subject code (17) is translated into target code (21) executable by a target processor (13). The generated target code (17) includes counterpart target instructions (214) associated with fault-vulnerable subject code instructions (174). Further, each of the counterpart target code instruction (214) is associated with recovery information (195). When an exception (e.g. a fault) occurs, the recovery information (195) is retrieved and used to recover a precise subject state, in particular by taking account of optimizations to generate the common-case target code (21). The precise subject state is then used to precisely handle the exception.
摘要翻译：精确的异常处理依赖于精确的主体状态，包括准确的程序计数器和主体处理器的寄存器值。主题代码（17）被转换成可由目标处理器（13）执行的目标代码（21）。生成的目标代码（17）包括与故障脆弱的主题代码指令（174）相关联的对方目标指令（214）。此外，对方目标代码指令（214）中的每一个与恢复信息（195）相关联。当出现异常（例如故障）时，检索恢复信息（195）并用于恢复精确的主体状态，特别是考虑到优化以产生公共目标代码（21）。然后精确的主体状态用于精确处理异常。

3. 发明申请

WO2008129315A1 APPARATUS AND METHOD FOR HANDLING EXCEPTION SIGNALS IN A COMPUTING SYSTEM 审中-公开
标题翻译：在计算系统中处理异常信号的装置和方法
公开(公告)号：WO2008129315A1
公开(公告)日：2008-10-30
申请号：PCT/GB2008/050259
申请日：2008-04-15
申请人： TRANSITIVE LIMITED , KNOWLES, Paul Thomas , WAN, Kit Man
发明人： KNOWLES, Paul Thomas , WAN, Kit Man
IPC分类号： G06F9/45
CPC分类号： G06F11/0769 , G06F9/45516 , G06F11/0772 , G06F11/0778
摘要： Method and apparatus for the handling of exception signals in combination particularly with the dynamic conversion of binary code executable by a one computing platform into binary code executed instead by another computing platform. In one exemplary aspect, an exception handling unit (195, 220, 230) selectively handles some exception signals with respect to a target state (320) and handles other exception signals with respect to a subject state (330) derived from the target state (320). A plurality of signal handling sub-units (223) are arranged to selectively process the exception signal (310) with respect to the target state (320) and output a request either to return to execution or to pass on the exception signal (310). A delivery path selection unit (222) is arranged to determine a delivery path of the exception signal (310) to a selected group of the plurality of signal handling sub-units (223). A signal control unit (221 ) is arranged to deliver the exception signal (310) in turn to each of the selected group of signal handling sub-units (223) according to the delivery path and (i) where a respective one of the signal handling sub-units (223) requests the return to execution then to return to execution according to the target state (320); and (ii) where the signal handling sub- unit (223) requests to pass on the exception signal (310) then to pass on the exception signal (310) to a subsequent one of the selected group of signal handling sub-units (223) according to the delivery path and, where no further of the signal handling sub-units are specified in the delivery path, then to deliver the exception signal (310) to a subject-side exception handler unit (230).
摘要翻译：用于处理异常信号的方法和装置，特别是与由一个计算平台执行的二进制代码的动态转换相结合，由另一个计算平台执行的二进制代码组合。在一个示例性方面，异常处理单元（195,220,230）选择性地处理关于目标状态（320）的一些异常信号，并处理关于从目标状态导出的对象状态（330）的其他异常信号（ 320）。多个信号处理子单元（223）被布置成相对于目标状态（320）选择性地处理异常信号（310），并输出请求返回执行或传递异常信号（310）。传送路径选择单元（222）被布置成确定异常信号（310）到多个信号处理子单元（223）的选定组的传送路径。信号控制单元（221）被布置成根据传送路径将异常信号（310）依次传送到所选择的一组信号处理子单元（223）中的每一个，以及（i）其中信号处理子单元（223）请求返回执行，然后根据目标状态返回执行（320）; 和（ii）信号处理子单元（223）请求传递异常信号（310），然后将异常信号（310）传递到所选择的一组信号处理子单元（223）中的后续一个），并且在传送路径中没有指定进一步的信号处理子单元的情况下，将异常信号（310）传送到对象侧异常处理单元（230）。

4. 发明申请

WO2006111705A3 METHOD AND APPARATUS FOR PRECISE HANDLING OF EXCEPTIONS DURING PROGRAM CODE CONVERSION 审中-公开
标题翻译：在程序代码转换期间精确处理异常的方法和装置
公开(公告)号：WO2006111705A3
公开(公告)日：2007-03-29
申请号：PCT/GB2006001268
申请日：2006-04-07
申请人： TRANSITIVE LTD , BARRACLOUGH GAVIN , WAN KIT MAN , HUMMAIDA ABDUL RAHMAN
发明人： BARRACLOUGH GAVIN , WAN KIT MAN , HUMMAIDA ABDUL RAHMAN
IPC分类号： G06F9/318 , G06F9/38
CPC分类号： G06F9/3863 , G06F9/45504 , G06F9/45533 , G06F2209/481
摘要： Precise exception handling relies on a precise subject state including an accurate program counter and register values of a subject processor. Subject code (17) is translated into target code (21) executable by a target processor (13). The generated target code (17) includes counterpart target instructions (214) associated with fault-vulnerable subject code instructions (174). Further, each of the counterpart target code instruction (214) is associated with recovery information (195). When an exception (e.g. a fault) occurs, the recovery information (195) is retrieved and used to recover a precise subject state, in particular by taking account of optimizations to generate the common-case target code (21). The precise subject state is then used to precisely handle the exception.
摘要翻译：精确的异常处理依赖于精确的主体状态，包括准确的程序计数器和主体处理器的寄存器值。主题代码（17）被转换成可由目标处理器（13）执行的目标代码（21）。生成的目标代码（17）包括与故障脆弱的主题代码指令（174）相关联的对方目标指令（214）。此外，对方目标代码指令（214）中的每一个与恢复信息（195）相关联。当出现异常（例如故障）时，检索恢复信息（195）并用于恢复精确的主体状态，特别是考虑到优化以产生公共目标代码（21）。然后使用精确的主体状态来精确处理异常。

5. 发明申请

WO2006095155A1 EXECUTION CONTROL DURING PROGRAM CODE CONVERSION 审中-公开
标题翻译：程序代码转换期间的执行控制
公开(公告)号：WO2006095155A1
公开(公告)日：2006-09-14
申请号：PCT/GB2006/000799
申请日：2006-03-06
申请人： TRANSITIVE LIMITED , BARRACLOUGH, Gavin , WAN, Kit, Man , BROWN, Alexander, Barraclough , MACKINTOSH, David, Nigel
发明人： BARRACLOUGH, Gavin , WAN, Kit, Man , BROWN, Alexander, Barraclough , MACKINTOSH, David, Nigel
IPC分类号： G06F9/455
CPC分类号： G06F9/45516
摘要： An execution control method is described for use in a translator (19) which converts subject code (17) into target code (21). The translator (19) includes a translator trampoline function (191) which is called from a translator run loop (190) and which in turn calls either to a translator code generator (192) to generate target code (21), or else calls previously generated target code (212) for execution. Control then returns to the translator trampoline function (191) to make a new call, or returns to the translator run loop (190). Other aspects include making context switches through the trampoline function (191) and setting first and second calling conventions either side of the trampoline function (191). Jumping directly or indirectly between target code blocks (212) during execution is also described.
摘要翻译：描述了在将主体代码（17）转换为目标代码（21）的转换器（19）中使用的执行控制方法。翻译器（19）包括翻译器蹦床功能（191），其从翻译器运行循环（190）调用，并且其又调用转换器代码生成器（192）以生成目标代码（21），或者先前调用生成目标代码（212）执行。控制然后返回到翻译器蹦床功能（191）以进行新的调用，或返回到翻译器运行循环（190）。其他方面包括通过蹦床功能（191）进行上下文切换，并在蹦床功能的一侧设置第一和第二呼叫约定（191）。还描述了在执行期间在目标代码块（212）之间直接或间接跳转。

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