Re: gcc 3.0: -m68000 -fpic generates invalid code

["Alexander Aganichev" <AAganichev at hypercom dot com>]

Adreas,

|>> gcc 3.0 generates invalid code when -m68000 -fpic options given. Here is sample test:
|>>
|>> test.c:
|>> int foo(int a);
|>> int foo2(int a) {
|>>   return foo(a);
|>> }
|>>
|>> The output from compiler contains `bsr.l' instruction which is not available on m68000.
|>For which target did you configure the compiler?

I've tried both m68k-elf and m68k-coff.

|> Note that gcc does not support -fpic with -m68000 when using ELF,

I don't see any reason for that strange behaviour. There's no problem to generate proper code, just
do not add `.l' after `bsr' instruction. Something like:

if(pic == 1)
  return "bsr ...";
else /* since pic == 2 is not supported on m68000 that's ok */
  return "bsr.l ...";

Though the second instruction should be generated by ld's relaxer (as far as I understand the way
that gcc and binutils should interact), so the proper way to fix will be just removing `.l' after
`bsr'. But I'm not sure that everything will still works when saying this words :-)

Alexander