本篇論文為實做GDB對單核心和多核心架構進行除錯，並且可以隨著處理器的發展，與不同階段的發展平台相連。單核心方面，我們實做出英特爾 8051單晶片的除錯器，其主要內容包括在GDB增加8051的架構、實做多種除錯指令、和針對多種8051平台進行遠端除錯。由於8051平台需要debugging stub負責與GDB溝通並執行其指令，所以根據不同的處理器發展階段，針對不同的8051平台建立debugging stub；CPU平台的debugging stub為一段函式，需要與被除錯的程式一起編譯成執行檔載入目標機器；擬真器平台的debugging stub為一個外部模組，做為擬真器和GDB溝通的橋梁；虛擬平台的debugging stub則能沿用以上任一種。另外在多核心方面，我們提出一個多核心的虛擬平台，Multi-SPARC虛擬平台，其單核心為開放源碼的SPARC V8 架構。為了增加其模擬效能，本虛擬平台在ESL等級下進行模擬。我們定義一些特定的函式進行資料溝通，並建立了TLM介面使其他外部模組可以透過此介面與多核心虛擬平台做溝通。我們提出的多核心系統能夠同時與多個SPARC v8 GDB進行除錯，測試多個應用程式證明其可行性，並且模擬效能比RTL快約1000倍。

We implement porting the GNU GDB to new target machines, including single core and multi-core architecture, and present on different platforms according to stages of processor development. We present the Intel 8051 debugger by define the 8051 architecture in GDB which can perform several debugging commands and remote debugging with 8051 platforms. As the need of debugging stub for 8051 platform to communicate with GDB, the stubs need to implement respectively with different development stages of processor platform; For CPU platform, it has to compile with application into image file executed on target machine; For emulator, it present as an external model connecting with both GDB and emulator; For virtual platform, any of the above two can put in good use. Furthermore, we present a multi-core virtual platform, Multi-SPARC virtual platform, which follows single-core architecture, SPARC v8, available as an open source development suite. To accelerate the simulation speed, the proposed platform is performed at electronic system level (ESL) in SystemC. We define some specific APIs for data transaction and implement the TLM interface for external modules to communicate with the host virtual platform. The proposed multi-SPARC system is able to connect with many SPARC v8 GDB, the same one which is predefine in GDB. We used several benchmarks to test its correctness, and it simulation speed can be 1000 times faster than RTL’s.

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