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| From: | Lin Nan |
| Subject: | [avr-gcc-list] How to do context saving manually in ISR(__vector_name) |
| Date: | Wed, 24 Dec 2008 10:21:17 +0800 |
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Hello, every one. In my program, I have some reason that it
is better to save all the registers including r0 to r31 and SREG to stack. So,
I used the ISR(VECT_NAME, ISR_NAKED) way to create ISRs. But I found if there are some local variables
in ISR handler, the Stack Pointer is saved to r29:r28 and decrease to create a new
stack frame when using non-naked ISR. I wonder how I can do this manually since I
don’t know how to get the size of local variables. |
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