| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation system, a thread control mechanism and an information processor for efficiently starting a program even in a register environment where the number of bits is different. SOLUTION: Even when a CPU is not holding a mechanism for switching operation modes where the number of bits is different for each process, and even when processes whose operation modes are different are operated while made to coexist by an OS, register saving and restoration in dispatch is changed for each process, so that it is possible to reduce any useless memory access. Thus, it is possible to maintain the dispatch performance of an operation in a 32 bit mode, and to start a program with high performance in an operation in a 64 bit mode. Therefore, it is possible to improve the performance of a whole system. COPYRIGHT: (C)2007,JPO&INPIT
|
