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Date: Thu, 10 Mar 2011 07:33:00 -0000
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From: Eli Zaretskii <eliz@gnu.org>
To: "Ulrich Weigand" <uweigand@de.ibm.com>
CC: mark.kettenis@xs4all.nl, gdb-patches@sourceware.org
In-reply-to: <201103092358.p29NwipE018648@d06av02.portsmouth.uk.ibm.com>	(uweigand@de.ibm.com)
Subject: Re: [RFC] Skip hardware breakpoint tests on OpenBSD
Reply-to: Eli Zaretskii <eliz@gnu.org>
References: <201103092358.p29NwipE018648@d06av02.portsmouth.uk.ibm.com>
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> Date: Thu, 10 Mar 2011 00:58:44 +0100 (CET)
> From: "Ulrich Weigand" <uweigand@de.ibm.com>
> Cc: gdb-patches@sourceware.org
> 
> That said, I completely agree that this should really be specific
> to the hardware/OS combinations.  The question is what exactly
> these ought to be.  Looking through the config files, it would
> appear that for the ia64, arm, powerpc and s390 architectures,
> the only OS supporting watchpoints is Linux.  For the x86
> architectures, the list gets a lot more complex:
>    i[34567]86-*-go32*
>    i[34567]86-*-msdosdjgpp*
>    i[34567]86-*-cygwin*
>    i[34567]86-*-mingw32*
>    i[34567]86-*-freebsd*
>    i[34567]86-*-kfreebsd*-gnu
>    i[34567]86-*-linux*
>    i[34567]86-*-solaris2.[6789]
>    i[34567]86-*-solaris2.1[0-9]
>    x86_64-*-mingw*
>    x86_64-*-linux*
>    x86_64-*-solaris2.1[0-9]*

I can confirm that hardware-assisted breakpoints and watchpoints are
supported in the DJGPP (that includes go32 as well, btw) and the
MinGW32 builds.  This is as of GDB 7.2.

HTH