arm中断详解

1：The Frame Pointer

2： Example Backtrace: If main calls foo which calls bar

Creating the “backtrace” structure

3：Normal Program Flow vs. Exceptions

4：ARM Processor Modes (of interest to us)

5：Terminology

6：SWIs

6.1:What do SWIs do?

6.2:What Happens on an SWI? (1)

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6.3:What Happens on an SWI? (2)

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6.4:“Vectoring” Exceptions to Handlers

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6.5:What Happens on SWI Completion?

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6.6:How Do We Determine the SWI number?

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6.7:SWI Instruction Format

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6.8:SWI Handler Uses the “Comment” Field

http://bbs.21ic.com/upfiles/img/200710/2007102116912614.jpg

6.9:Use The SWI # to Jump to “Service Routine”

http://bbs.21ic.com/upfiles/img/200710/2007102116932480.jpg

6.10:Problem with The Current Handler

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6.11:Full SWI Handler

http://bbs.21ic.com/upfiles/img/200710/20071021161045.jpg

6.12:C_SWI_Handler

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6.13:Loading the Vector Table

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6.14:Calling SWIs from C Code