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[avr-gcc-list] Avoid register saving
From: |
Bernhard Huber |
Subject: |
[avr-gcc-list] Avoid register saving |
Date: |
31 Mar 2004 12:42:59 +0200 |
Hi,
How can I tell avr-gcc (gcc version 3.0 20010605 (prerelease)) that a
bunch of registers (r2 to r16) must not be saved when entering a
interrupt service routine.
The ISR is coded in C and not in assembler, and I donĀ“t want to use the
__attribute__ (naked) to prevent the compiler creating prologue and
epilogue.
The command line option -ffixed seems not to be the right one.
Any ideas?
Regards,
Bernhard
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