[RFA] arm_extract_return_value, big-endian

[Fernando Nasser]

Well Michael, nobody has said anything, so if it seem to work lets make 
the change.  It seems reasonable to me.

My only question would be if we don't have any abstraction of the 
"extract a small type from a register" operation somewhere (arch vector, 
or an old macro).  But you've probably have checked for that already.

Regards to all,
Fernando

Michael Snyder wrote:
> [This doesn't seem to have gone out.  Excuse me if it appears twice]
> 
> One of you arm-savvy guys check me out on this:
> it seems logical, and it fixes two fails in callfuncs with -mbig-endian.
> 
> Michael
> 
> 
> ------------------------------------------------------------------------
> 
> 2002-11-05  Michael Snyder  <msnyder@redhat.com>
> 
> 	* arm-tdep.c (arm_extract_return_value): Handle offset of 
> 	small types on big-endian machines.
> 
> Index: arm-tdep.c
> ===================================================================
> RCS file: /cvs/src/src/gdb/arm-tdep.c,v
> retrieving revision 1.74
> diff -p -r1.74 arm-tdep.c
> *** arm-tdep.c	1 Nov 2002 21:21:49 -0000	1.74
> --- arm-tdep.c	6 Nov 2002 01:54:36 -0000
> *************** arm_extract_return_value (struct type *t
> *** 2274,2279 ****
> --- 2274,2284 ----
>   	  break;
>   	}
>       }
> +   else if (TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
> +     memcpy (valbuf, 
> + 	    &regbuf[REGISTER_BYTE (ARM_A1_REGNUM)] 
> + 	     + (REGISTER_RAW_SIZE (ARM_A1_REGNUM) - TYPE_LENGTH (type)), 
> + 	    TYPE_LENGTH (type));
>     else
>       memcpy (valbuf, &regbuf[REGISTER_BYTE (ARM_A1_REGNUM)],
>   	    TYPE_LENGTH (type));


-- 
Fernando Nasser
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