METHOD AND APPARATUS FOR PRECISE HANDLING OF EXCEPTIONS DURING PROGRAM CODE CONVERSION

摘要

Precise exception handling (precise exception handling) is dependent on the precise conditions subject to contain the correct program counter and register values ​​of the subject processor. The subject code 17 is converted to the target executable code (13) by the target processor (13). The resulting target code 17 is associated with the counterpart fault susceptible (fault-vulnerable) command code (counterpart) including the target instruction (214). In addition, the counterpart target instruction code (214) each of which is related to the decoding information (195). Exceptions (for example, a fault (fault)), if occurs, the restoration information 195 is to restore the precise subject state, in particular optimized for generating a common case (common-case), the target code (21) (optimization) by considering, it is retrieved and used. At this time, the precise subject state is used to handle precise exceptions. ; Precise exception handling (precise exception handling), the subject status (subject state), restoration information (recovery information), optimization (optimization)