Re: [rfa?] Implement ppc32 SYSV {extract,store} return value

[Andrew Cagney <ac131313 at redhat dot com>]

> On Friday, October 10, 2003, at 01:32  PM, Andrew Cagney wrote:
>
> The GCC shipped in 1.5 vs the one now in 1.6
> $ gcc --version
> 2.95.3
>
> So, which one was right?  The 1.5 compiler or the 1.6 compiler?

Neither, but from memory 1.5 was slightly closer:

> /* NetBSD is confused.  It appears that 1.5 was using the correct SVr4
>    convention but, 1.6 switched to the below broken convention.  For
>    the moment use the broken convention.  Ulgh!.  */
>
> static int     
> ppcnbsd_use_struct_convention (int gcc_p, struct type *value_type)
> {  
>   if ((TYPE_LENGTH (value_type) == 16 || TYPE_LENGTH (value_type) == 8)
>       && TYPE_VECTOR (value_type))
>     return 0;                            
>
>   return !(TYPE_LENGTH (value_type) == 1
>            || TYPE_LENGTH (value_type) == 2
>            || TYPE_LENGTH (value_type) == 4
>            || TYPE_LENGTH (value_type) == 8);
> }

however, then GCC was getting:

+         /* GCC screwed up.  The last register isn't "left" aligned.
+            Need to extract the least significant part of each
+            register and then store that.  */

wrong.

Andrew