Invention Grant
US07996659B2 Microprocessor instruction that allows system routine calls and returns from all contexts
有权
允许系统例程调用和从所有上下文返回的微处理器指令
- Patent Title: Microprocessor instruction that allows system routine calls and returns from all contexts
- Patent Title (中): 允许系统例程调用和从所有上下文返回的微处理器指令
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Application No.: US11145613Application Date: 2005-06-06
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Publication No.: US07996659B2Publication Date: 2011-08-09
- Inventor: Erik K. Renno , Oyvind Strom , Andreas Engh-Halstvedt , Havard Skinnemoen
- Applicant: Erik K. Renno , Oyvind Strom , Andreas Engh-Halstvedt , Havard Skinnemoen
- Applicant Address: US CA San Jose
- Assignee: Atmel Corporation
- Current Assignee: Atmel Corporation
- Current Assignee Address: US CA San Jose
- Agency: Fish & Richardson P.C.
- Main IPC: G06F9/00
- IPC: G06F9/00
Abstract:
An apparatus comprises register means for storing a return context upon initiation of a supervisor call instruction and restoring means to restore a privilege level and status register upon execution of a supervisor return instruction. The supervisor call instruction can be called from all contexts.
Public/Granted literature
- US20070006200A1 Microprocessor instruction that allows system routine calls and returns from all contexts Public/Granted day:2007-01-04
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