[PATCH] Fix 64-bit T3 invert_limb.asm on PIC again.

[David Miller]

Some of this stuff doesn't work, for example, from invert_limb.asm:

+       rd      %pc, %g3
+       sethi   %hi(_GLOBAL_OFFSET_TABLE_+4), %g4
+       add     %g4, %lo(_GLOBAL_OFFSET_TABLE_+8), %g4
+       add     %g3, %g4, %g4
        sethi   %hi(approx_tab-512), %g2
        or      %g2, %lo(approx_tab-512), %g2
+       ldx     [%g4+%g2], %g2

You can't use "approx_tab-512", you're addressing the GOT slot
of the resolved address, not the address itself.

That's why my fix used:

	sethi   %hi(approx_tab), %g2
	or      %g2, %lo(approx_tab), %g2
	ldx     [%g4+%g2], %g2
	sub	%g2, 512, %g2