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1. 发明授权

US06363436B1 Method and system for loading libraries into embedded systems 失效
标题翻译：将库加载到嵌入式系统中的方法和系统
公开(公告)号：US06363436B1
公开(公告)日：2002-03-26
申请号：US08791446
申请日：1997-01-27
申请人： Lee Emison Hagy , Grama Kasturi Harish , James Darrell Heath , Chakravarthy Jagannadhan , Deepak Anantarao Kulkarni
发明人： Lee Emison Hagy , Grama Kasturi Harish , James Darrell Heath , Chakravarthy Jagannadhan , Deepak Anantarao Kulkarni
IPC分类号： G06F9445
CPC分类号： G06F9/44521
摘要： A method and means for enhancing an embedded system includes a technique for generating shared library information which is stored in the ROM, the shared library information including pointers to structures for each shared library to be preloaded into the ROM, maintaining each module per library as a linked list. When the ROM image is generated, the tool writes the structures describing the preloaded libraries into the ROM image. As pointers to the structures are not valid in the ROM image, the pointers to these modules are relocated so that they are valid in the loader's address space when remapped into the loader by the kernel. At system start-up or “boot,” the kernel starts the embedded loader and maps the structures exactly where the loader expects to find them. Thus, when the loader attempts to load an external dynamically linked ELF executable file that is linked to one of the shared libraries in the ROM, the loader resolves all references to the preloaded library by traversing the structures provided that were mapped into its address space by the system kernel.
摘要翻译：一种用于增强嵌入式系统的方法和装置包括一种用于产生存储在ROM中的共享库信息的技术，共享库信息包括指向每个库预先加载到ROM中的每个共享库的结构的指针，将每个库的每个模块保持为链表。当ROM映像生成时，工具将描述预加载库的结构写入ROM映像。由于指向结构的指针在ROM映像中无效，因此重定位到这些模块的指针，以便在内核将其重新映射到加载程序时，它们在加载程序的地址空间中有效。在系统启动或“启动”时，内核启动嵌入式加载程序，并将结构映射到装载程序期望找到它们的位置。因此，当加载程序尝试加载链接到ROM中的一个共享库的外部动态链接的ELF可执行文件时，加载程序通过遍历提供的映射到其地址空间中的结构来解析对预加载库的所有引用，系统内核。

2. 发明授权

US6052778A Embedded system having dynamically linked dynamic loader and method for linking dynamic loader shared libraries and application programs 失效
标题翻译：嵌入式系统具有动态链接的动态加载器和方法，用于链接动态加载器共享库和应用程序
公开(公告)号：US6052778A
公开(公告)日：2000-04-18
申请号：US782724
申请日：1997-01-13
申请人： Lee Emison Hagy , Grama Kasturi Harish , James Darrell Heath , Deepak Anantarao Kulkarni , William Francis Quinn
发明人： Lee Emison Hagy , Grama Kasturi Harish , James Darrell Heath , Deepak Anantarao Kulkarni , William Francis Quinn
IPC分类号： G06F9/445
CPC分类号： G06F9/44521
摘要： A method and means for enhancing an embedded system includes means for and steps of executing a boot routine; activating a ROM loader routine; initializing an I/O subsystem; activating an embedded OS; creating a dynamically linked embedded system loader task, and having the embedded OS map the Global Coerced Memory (GCM) and the Global Shared Memory (GSM) into its address space so that it can access shared libraries; loading each of a plurality of executable programs, and mapping the GCM and the GSM into each executable program's address space so it is able to access shared libraries.
摘要翻译：一种用于增强嵌入式系统的方法和装置，包括执行引导例程的步骤和步骤; 激活ROM加载程序; 初始化I / O子系统; 激活嵌入式操作系统; 创建动态链接的嵌入式系统加载器任务，并使嵌入式操作系统将全局强制内存（GCM）和全局共享内存（GSM）映射到其地址空间中，以便它可以访问共享库; 加载多个可执行程序中的每一个，并将GCM和GSM映射到每个可执行程序的地址空间，以便能够访问共享库。

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