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Date: Tue, 24 Apr 2012 16:55:00 -0000
From: Pedro Alves <palves@redhat.com>
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To: Jeff Kenton <jkenton@tilera.com>
CC: Joel Brobecker <brobecker@adacore.com>, gdb-patches@sourceware.org
Subject: Re: [PATCH] Add support for Tilera TILE-Gx processor (part 2/2: gdbserver)
References: <4F906647.8090303@tilera.com> <20120420124306.GJ2852@adacore.com> <4F95B4A8.4060204@tilera.com>
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On 04/23/2012 08:59 PM, Jeff Kenton wrote:

> +static void
> +tile_store_gregset (struct regcache *regcache, const void *buf)
> +{
> +  int i;
> +  char zerobuf[8];
> +
> +  memset (zerobuf, 0, 8);
> +  for (i = 0; i < tile_num_regs; i++)
> +    if (tile_regmap[i] != -1)
> +      supply_register (regcache, i, ((unsigned long *) buf) + tile_regmap[i]);
> +    else
> +      supply_register (regcache, i, zerobuf);
> +}


If the register isn't available, then you should call
"supply_register (regcache, i, NULL)" (or don't call anything), and
then GDB will show "<unavailable>".

-- 
Pedro Alves