数据异常处理。The main source file is "dabort.s": with suitable -PreDefines or a corresponding "options-setting" file, it assembles to the data abort veneer. This is described in detail in the documentation. The "dabort.h" file contains definitions of some constants used in the data abort veneer s interface to the rest of the system - again, this is described in the documentation. The "option.s" file is an example "options-setting" file.
