[m68k] fix return value extraction

[Andreas Schwab]

Nathan Sidwell <nathan@codesourcery.com> writes:

> --- 455,465 ----
>     if ((code == TYPE_CODE_STRUCT || code == TYPE_CODE_UNION)
>         && !m68k_reg_struct_return_p (gdbarch, type))
>       {
> !       /* Although they SYSV ABI specifies that a function returning a
> ! 	 structure this way should preserve %a0, GCC doesn't do that.

At least on m68k-linux it does, and probably all targets using
m68k_function_value (ie. following the SVR4 ABI) do the same.

Andreas.

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Andreas Schwab, SuSE Labs, schwab@suse.de
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