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[PATCH] (version 2) Change MIPS linker stubs to allow for more than 2^15 symbols.

Richard Sandiford richard@codesourcery.com
Sun Jun 11 08:41:00 GMT 2006 
Thiemo Seufer <ths@networkno.de> writes:
> Eric Christopher wrote:
>> I usually prefer this style:
>> 
>> >-#define STUB_LUI(VAL) (0x3c180000 + (VAL))	/* lui t8,VAL */
>
> plus
>
>>-          bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff),
>>-                      stub + idx);
>>-          idx += 4;
>
> or rather:
>
>>-/* Instructions which appear in a stub.  */
>>-#define STUB_LW(abfd)                                                  \
>>-  ((ABI_64_P (abfd)                                                    \
>>-    ? 0xdf998010                               /* ld t9,0x8010(gp) */  \
>>-    : 0x8f998010))                             /* lw t9,0x8010(gp) */
>
> plus
>
>>-      idx = 0;
>>-      bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx);
>
> elsewhere ...
>
>> To this...
>> 
>> >+  /* Fill the stub.  */
>> >+  bfd_put_32 (output_bfd, (ABI_64_P (output_bfd)
>> >+			   ? 0xdf998010		/* ld t9, 0x8010(gp) */
>> >+			   : 0x8f998010),	/* lw t9, 0x8010(gp) */
>> >+	      stub);
>
> All those macros are only used once, so I prefer to have the
> information in a single place in the file.

FWIW, I agree with Eric here.  Having macros for hard-coded constants
is good, even if they're only used once.  IOW I prefer the way it is now.
I don't feel strongly enough to argue about it further though. ;)

Dan, I've applied the patch I posted to HEAD and 2.17 branch.

Richard
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