Re: [RFA] mips_push_arguments gdbarch-ified

[Andrew Cagney <ac131313@ges.redhat.com>]

> Andrew Cagney wrote:
> 
>> 
> 
>> > These changes fix 16 testsuite failures, based in the Irix native
>> > compiler running with -n32 (and produce no regressions for -o32).
> 
>> 
>> Yes, with tweaks.
>> 
>> General comment.  You may want to consider restructuring the function to
>> read:
>> 
>> for (argument in arguments)
>>    for (argument broken down in to 8 byte chunks)
>>      if (fp argument && fnpreg <= num fp arg regs)
>>        write argument chunk to fp register
>>      else if (!fp argument && reg <= num arg regs)
>>        write chunk (carefully aligned) to gp register
>>      else
>>        write chunk to (carefully aligned) memory
> 
> 
> OK, I've checked in, with all of your tweaks except for the above.
> Come on, you can't ask me to restructure the whole function  just
> to get what was originally a 5-line change in!!!    ;-)

If you haven't already, look through the document:
http://techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi?coll=0650&db=bks&srch=&fname=/SGI_Developer/Mpro_n32_ABI/sgi_html/ch02.html
which Kevin cited.  The above was based on that.  With the introduction 
of a new mips_n32n64_push_arguments() unction there is an oportunity to 
start with a clean slate.  To be honest, I think taking that oportunity 
will make getting this working much easier! :-)

> As it is, I've fixed a bunch of bugs that weren't mine, 
> just to get this in.  Diffs that went in attached below.

Oops, I didn't mean for you to touch the old mips_push_arguments() code. 
  That can be left to rot.

> 2002-08-09  Michael Snyder  <msnyder@redhat.com>
> 
> 	* mips-tdep.c (ROUND_DOWN, ROUND_UP): Move to global scope.
> 	(mips_push_arguments): Correct some comments.  Use paddr_nz
> 	for printing addresses in debug output.  Replace static
> 	allocation using MAX_REGISTER_RAW_SIZE with alloca.
> 	(mips_n32n64_push_arguments): New function, cloned from
> 	mips_push_arguments and tuned for the n32/n64 ABI.
> 	(mips_push_register): Buffer needs dynamic allocation.
> 	(mips_print_register): Ditto.
> 	(do_gp_register_row): Ditto.
> 	(mips_store_return_value): Ditto.
> 	(mips_gdbarch_init): Set gdbarch_push_arguments per ABI.

ok, thanks
Andrew