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Re: [Gc] Re: Saving all register of Boehm's Stop-World of hypermodern i686, is it reliable?

From: "Bruce Hoult" <bruce at hoult dot org>
To: "Hans Boehm" <Hans dot Boehm at hp dot com>
Cc: "Tom Tromey" <tromey at redhat dot com>, gc at napali dot hpl dot hp dot com, java at gcc dot gnu dot org, J.C. <jc-nospam at jr-pizarro dot jazztel dot es>
Date: Sun, 11 Feb 2007 12:27:04 +1300
Subject: Re: [Gc] Re: Saving all register of Boehm's Stop-World of hypermodern i686, is it reliable?
References: <45CE0D3B.1080601@jr-pizarro.jazztel.es> <m3y7n5g7cj.fsf@localhost.localdomain> <Pine.GHP.4.58.0702101445060.4558@tomil.hpl.hp.com>

On 2/11/07, Hans Boehm <Hans.Boehm@hp.com> wrote:

Sometimes setjmp has also been used in this way, but that sometimes
doesn't save a sufficient part of the register set.

Do you have an example of what setjmp misses?

Of course it typically doesn't save the volatile/caller save registers
(e.g. r0-r3 on ARM/Thumb, r3-r10/r12 (depending on ABI) on PPC), but
that's fine because it's a function call so the compiler doesn't leave
live values in those anyway.

Follow-Ups:
- Re: [Gc] Re: Saving all register of Boehm's Stop-World of hypermodern i686, is it reliable?
  - From: Hans Boehm

References:
- Saving all register of Boehm's Stop-World of hypermodern i686, is it reliable?
  - From: J.C.
- Re: Saving all register of Boehm's Stop-World of hypermodern i686, is it reliable?
  - From: Tom Tromey
- Re: Saving all register of Boehm's Stop-World of hypermodern i686, is it reliable?
  - From: Hans Boehm

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