Illegal instructions for 68000 generated with gcc -qrtems -m68000
Richard Pack
rick@cs.york.ac.uk
Wed Oct 20 09:54:00 GMT 1999
I have been using gcc linux pc (host) -> m68k (target) cross compiler
to compile a simple ADA program to run with the RTEMS operating system
on a 68000 based SBC. I have the above options to gcc in my Makefile but
the compiler produces extb instructions (op code 0x49XX) which are
illegal for the 68000 (valid for 68020 etc) is there a switch to prevent
this? Looking at the help file I can't see anything appropriate.Using
68000 code two ext would be required to take a byte to a long. I would
have assumed the -m68000 would do it.
Thanks for anticipated help,
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