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Re: Versioning longjmp etc.

From: Ulrich Drepper <drepper at redhat dot com>
To: Steve Munroe <sjmunroe at us dot ibm dot com>
Cc: libc-hacker at sources dot redhat dot com, sjmunroe at vnet dot ibm dot com
Date: Fri, 17 Oct 2003 14:26:35 -0700
Subject: Re: Versioning longjmp etc.
Organization: Red Hat, Inc.
References: <OF4D4AA679.CE5C1FEB-ON86256DC2.00739F8C-86256DC2.00747D84@us.ibm.com>

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Steve Munroe wrote:

> I want to make VMX as usable as possible, without undefined behaviors or 
> undocumented restrictions. 

The compiler knows about setjmp/longjmp.  It will store the register
content in memory around these calls.


> How about get/set/make/swapcontext? The size of ucontext will change as a 
> result of VMX state in sigcontext. This requires versioning.

Hasn't it already changed?  If not, yes, ppc sucks again and requires
versioning.

- -- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------
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References:
- Re: Versioning longjmp etc.
  - From: Steve Munroe

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