发明名称 |
A DATA PROCESSING APPARATUS AND METHOD FOR SAVING RETURN STATE |
摘要 |
<p>The present invention provides a data processing apparatus and method for saving return state. The data processing apparatus comprises a processing unit for executing data processing instructions, the processing unit having a plurality of modes of operation, with each mode of operation having a corresponding stack for storing data associated with that mode. The processing unit is responsive to a return state data processing instruction to write return state data of the processing unit from its current mode of operation to a stack corresponding to a different mode of operation to the current mode of operation. This approach significantly reduces code size and improves interrupt latency over known piror art techniques.</p> |
申请公布号 |
WO0242914(A1) |
申请公布日期 |
2002.05.30 |
申请号 |
WO2001GB04252 |
申请日期 |
2001.09.24 |
申请人 |
ARM LIMITED |
发明人 |
NEVILL, EDWARD, COLLES;DEVEREUX, IAN, VICTOR |
分类号 |
G06F9/46;G06F9/48;(IPC1-7):G06F9/46 |
主分类号 |
G06F9/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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