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Re: $zero on alpha should always be available

From: Joel Brobecker <brobecker at adacore dot com>
To: Pedro Alves <pedro at codesourcery dot com>
Cc: gdb-patches at sourceware dot org, Mark Kettenis <mark dot kettenis at xs4all dot nl>
Date: Mon, 23 May 2011 21:44:18 -0700
Subject: Re: $zero on alpha should always be available
References: <201105211919.p4LJJn5Z013541@glazunov.sibelius.xs4all.nl> <201105221217.12418.pedro@codesourcery.com> <201105231835.54370.pedro@codesourcery.com>

> Here's what I came up with by inspection.  I have no alpha machine to test
> this on.  The alpha-nat.c change would need
> checking on an alpha running OSF if we wanted to test this...

Thanks, Pedro.  I will try to test this tomorrow. I think Tru64 is
one of the systems where expect or tcl no longer work for me, so
I might not be able to run the testsuite. But worse case scenario,
I can try running it against AdaCore's testsuite.

> 2011-05-23  Pedro Alves  <pedro@codesourcery.com>
> 
> 	gdb/
> 	* alpha-tdep.c (alpha_cannot_fetch_register): Don't return true
> 	for ALPHA_ZERO_REGNUM.
> 	(alpha_supply_int_regs): Explicitly supply zero as the value for
> 	ALPHA_ZERO_REGNUM in the register cache.
> 	* alpha-nat.c (fetch_osf_core_registers): Ditto.

-- 
Joel

Follow-Ups:
- Re: $zero on alpha should always be available
  - From: Pedro Alves

References:
- [PATCH] %g0 on sparc should always be available
  - From: Mark Kettenis
- Re: [PATCH] %g0 on sparc should always be available
  - From: Pedro Alves
- $zero on alpha should always be available
  - From: Pedro Alves

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