The register names $ta0 .. $ta3 were added by SGI for N32 / N64 code. Because these reference $8 .. $11 just like $t0 .. $t3 in the O32 ABI their availability in O32 as well appears dangerous, if not a bug: $ cat s.s addu $ta0, $ta0 $ mips-linux-as -o s.o s.s $ file s.o s.o: ELF 32-bit MSB relocatable, MIPS, MIPS-I version 1 (SYSV), not stripped $ I was expecting an error message and I'm wondering, was this intentional? Ralf
