[RFA] Simple patch for x86-64 (can go to 5.2?)

[Michal Ludvig]

This patch is a really simple one without any side-effects. The problem 
is, that gcc for x86-64 by default has -fomit-frame-pointer switched on 
when optimalization is requested. People don't know it and are 
complaining that (diplomaticaly said) "gdb doesn't work" (depending on 
their attitude :-). The only thing this patch does is, that it prints a 
note, when x86_64_skip_prologue doesn't see "push %rbp" as the very 
first instruction of a given function. The note is printed only once. 
That's all. I'd like to see it in 5.2 to teach people that they should 
explicitly use -fno-omit-frame-pointer when compiling a code for 
debugging. Can I commit? I'll remove this note as soon as I fix dwarf2 
reader to handle even optimized code.

2002-04-26  Michal Ludvig  <mludvig@suse.cz>
      * x86-64-tdep.c (x86_64_skip_prologue): Print note when debugging
      code without frame pointers.

Michal Ludvig
-- 
* SuSE CR, s.r.o     * mludvig@suse.cz
* +420 2 9654 5373   * http://www.suse.cz
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