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Re: [avr-gcc-list] Function prologue and epilogues of gcc
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From: |
jepler |
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Subject: |
Re: [avr-gcc-list] Function prologue and epilogues of gcc |
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Date: |
Fri, 21 Oct 2005 14:13:31 -0500 |
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User-agent: |
Mutt/1.4.2.1i |
If you could guarantee that there are 255 unused bytes of SRAM below the lowest
stack location, maybe this would be OK. But imagine the AVR sees an interrupt
just after __SP_H__ changes. It begins by pushing a bunch of registers, which
clobbers the heap, or even worse writes to I/O space or the registers!
Jeff
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