Re: [avr-gcc-list] tool chain bug

[Joerg Wunsch]

"Theodore A. Roth" <address@hidden> wrote:

> I think the attached patch for gcc solves this problem. (linker error as
> such: "relocation truncated to fit: R_AVR_7_PCREL no symbol") I'm still
> trying to verify that the resulting code is correct (my app I'm working on
> is broken in other ways right now itself ;-)

I'll give it a try in my project at home.  I remember a discussion in
the avr-libc list about documenting _PC_, and the conclusion was that
this symbol probably shouldn't be there at all, since it's only a
tangled name for the "." location counter of the assembler.

So if there's a vote, i'll vote for your patch. ;-)

Only nit:

@@ -4887,8 +4887,8 @@
         "__SP_L__ = 0x3d\n", file);
   
   fputs ("__tmp_reg__ = 0\n" 
-        "__zero_reg__ = 1\n"
-        "_PC_ = 2\n", file);
+         "__zero_reg__ = 1\n", file);
+/*      "_ PC_ = 2\n", file); */
 
   /* FIXME: output these only if there is anything in the .data / .bss
      sections - some code size could be saved by not linking in the

I'd say just drop the _PC_ line completely even from the source of gcc
(as opposed to making it a comment).  The meta information that lead
to its dismissal is best kept in CVS, so there's IMHO no need to keep
dead code around in the source.

-- 
J"org Wunsch                                           Unix support engineer
address@hidden        http://www.interface-systems.de/~j/
avr-gcc-list at http://avr1.org