From: Cary Coutant <cary@cup.hp.com>
To: <law@redhat.com>, "John David Anglin" <dave@hiauly1.hia.nrc.ca>
Cc: "Alan Modra" <alan@linuxcare.com.au>, <bame@fc.hp.com>,
<parisc-linux@thepuffingroup.com>
Subject: Re: [parisc-linux] where to put 64 bit libmilli?
Date: Thu, 4 Jan 2001 11:00:49 -0800 [thread overview]
Message-ID: <200101041902.LAA22273@adlmail.cup.hp.com> (raw)
>For PA64 the indirect calling sequence is significantly simpler and is
>emitted inline, hence we don't need/use $$dyncall for PA64.
Even for PA-32, $$dyncall should be simple enough to emit inline. There
were two reasons why we didn't do it at first:
1. Our compilers emitted code that was compatible with both MPE and
HP-UX. Since function pointers had different representations in these two
runtimes, $$dyncall had to check a low-order bit.
2. After we implemented shared libraries on HP-UX, function pointers
could be either "internal" or "external", and $$dyncall had to check.
Eventually, HP-UX has moved to a runtime where function pointers are
either all internal (for a statically-bound program) or all external (for
a dynamically-bound program). We now have compiler options to generate
the appropriate inline sequence for either model.
Linux shouldn't need to be concerned with either of these cases. If
you're using $$dyncall for the 32-bit runtime, I strongly suggest that
you change the compiler.
-cary
next reply other threads:[~2001-01-04 18:59 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-04 19:00 Cary Coutant [this message]
2001-01-04 19:15 ` [parisc-linux] where to put 64 bit libmilli? Grant Grundler
-- strict thread matches above, loose matches on Subject: below --
2001-01-04 21:20 Cary Coutant
2001-01-02 19:25 Paul Bame
2001-01-02 19:39 ` John David Anglin
2001-01-02 19:58 ` Paul Bame
2001-01-02 20:17 ` Jeffrey A Law
2001-01-03 1:46 ` Alan Modra
2001-01-03 1:57 ` Matthew Wilcox
2001-01-03 2:34 ` Alan Modra
2001-01-03 3:37 ` Jeffrey A Law
2001-01-03 4:11 ` Alan Modra
2001-01-03 4:15 ` Jeffrey A Law
2001-01-03 4:44 ` Alan Modra
2001-01-04 4:04 ` Jeffrey A Law
2001-01-04 5:20 ` Alan Modra
2001-01-04 6:18 ` John David Anglin
2001-01-04 7:03 ` Alan Modra
2001-01-04 16:36 ` Paul Bame
2001-01-04 17:06 ` Jeffrey A Law
2001-01-04 17:29 ` Jeffrey A Law
2001-01-04 17:37 ` Jeffrey A Law
2001-01-04 17:41 ` Paul Bame
2001-01-04 23:52 ` Alan Modra
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