Re: [PATCH 24700]

[Daniel Jacobowitz <drow at false dot org>]

On Thu, Mar 01, 2007 at 03:26:38PM -0400, Jose Flavio Aguilar Paulino wrote:
> This patch modifies the <gdb/ppc-linux-tdep.c> file.
> It was noticed in GDB for PPC64 that the command "set var" failed when
> used to change a string value, the intent of this patch is to solve this
> gdb64's problem. Ex:
> 
> char *ptr = NULL;
> printf("ptr string is %s\n", ptr);
> (gdb) set var ptr="def"
> ---Problem Description--- 
> gdb64: failed to set a string variable's value.
> 
> I could not detect any regressions that could be caused by this patch in GDB's testsuite.

What is the problem, and how did the patch fix it?  There are a number
of style issues with the patch, but no point at looking at them until
we understand the overall issue.

> +      if (targ != &current_target)
> +        return get_target_memory_unsigned (targ, addr2deref, 8);
> +      else
> +          {
> +            gdb_assert (8 <= sizeof (buf));
> +            target_read_memory(addr, buf, 8);
> +            return extract_unsigned_integer (buf, 8);
> +          }

What's the point of special casing based on the target?

-- 
Daniel Jacobowitz
CodeSourcery