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Re: [avr-gcc-list] mcall-prologues completely broken for >128k
From: |
Dmitry K. |
Subject: |
Re: [avr-gcc-list] mcall-prologues completely broken for >128k |
Date: |
Thu, 14 May 2009 08:58:21 +1100 |
User-agent: |
KMail/1.5 |
On Thursday 14 May 2009 07:42, Sean D'Epagnier wrote:
[...]
> Also, there is the issue of longjmp setting EIND and not restoring it.
> It gets a little tricky with interrupts that can potentially set EIND
> as well.
Yes, the longjmp() sets EIND. It is impossible to restore EIND,
as the EIJMP is the *last* instruction of this function. The
alternative is to emulate EIJMP with RET instruction. Note, the
usage of EIJMP is the very old behavior.
IMHO, the status of EIND as 'never-change' is a doubtful design.
For example, the status 'call-scratch' is better in conjunction
the presence of option 'my-trampolines-are-at-low-memory'. (In
case of this option the compiler must not use EIND entirely).
In any case, the rules of EIND usage must be documented.
Regards,
Dmitry.
- [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/09
- RE: [avr-gcc-list] mcall-prologues completely broken for >128k, Weddington, Eric, 2009/05/09
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/10
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/10
- RE: [avr-gcc-list] mcall-prologues completely broken for >128k, Weddington, Eric, 2009/05/12
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/12
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Anatoly Sokolov, 2009/05/13
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/13
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Anatoly Sokolov, 2009/05/13
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/13
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k,
Dmitry K. <=
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Anatoly Sokolov, 2009/05/13
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Dmitry K., 2009/05/13
- Message not available
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Dmitry K., 2009/05/13
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Dmitry K., 2009/05/14
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/14
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Dmitry K., 2009/05/16
- Re: [avr-gcc-list] mcall-prologues completely broken for >128k, Sean D'Epagnier, 2009/05/16
- [avr-gcc-list] Bootloader interrupt callbacks, Sven Schlender, 2009/05/18
- Re: [avr-gcc-list] Bootloader interrupt callbacks, Eric Pasquier, 2009/05/18
- AW: [avr-gcc-list] Bootloader interrupt callbacks, Sven Schlender, 2009/05/18