Message-ID: <002701c21042$0c3326c0$0102a8c0@acceleron>
From: "Andrew Cottrell" <acottrel AT ihug DOT com DOT au>
To: <djgpp-workers AT delorie DOT com>, "Charles Sandmann" <sandmann AT clio DOT rice DOT edu>
References: <10206100232 DOT AA17839 AT clio DOT rice DOT edu>
Subject: Re: unixy sbrk and win2k
Date: Mon, 10 Jun 2002 15:45:06 +1000
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Reply-To: djgpp-workers AT delorie DOT com

> The following patch to crt0.S seems to have fixed the problem:
>
> *** crt0.BAK Sun Jun  9 20:14:46 2002
> --- crt0.S Sun Jun  9 20:21:48 2002
> *************** brk_common:
> *** 475,478 ****
> --- 475,479 ----
>   movw $0x0900, %ax /* disable interrupts */
>   int $0x31
> + cli
>   pushl %eax
>
>
> (Line numbers are vs 2.03, but it's just a single line insertion).  This
> should be a no op - since the previous line disables and stores the
> previous state in AX; we then restore (enable) them with an equivalent
call.
>
> Under Win2K the get interrupt state DPMI call shows the program starts
> with interrupts disabled (but they aren't) - the cli above seems to
> fix win2K's bad behavior when moving the arena but does not break
> win95 for example.
>
> Any comments?  We ought to try and build something substantial (like
> emacs) with this fix above to crt0 and see if there is joy in W2K land
> again.
>
> I can't see how this above could break anything.

I can rebuild all of the packages that I update to clio in about 3 hours if
all goes well, but what do I need to do to test the change? I will do a
re-build tonight with the patch so I am ready for testing tomorrow night
after work.

Andrew