From: Jim Wilson <wilson@codesourcery.com>
To: sumanth <sumanth.gundapneni@redpinesignals.com>
Cc: gcc@gcc.gnu.org
Subject: Re: extern variable
Date: Sun, 02 Aug 2009 19:34:00 -0000 [thread overview]
Message-ID: <4A75EA44.8050201@codesourcery.com> (raw)
In-Reply-To: <4A71B07A.1030600@redpinesignals.com>
On 07/30/2009 07:38 AM, sumanth wrote:
> How can I make sure the debugging information printed by my compiler for
> extern variables is correct.
> I am able to print them in gdb in with an _ (underscore). I am using
> Gcc-4.3.4 and gdb 5.3
ELF targets usually don't prepend an underscore to symbol names. But if
you are prepending an underscore for some reason, then you need to make
sure that your ASM_OUTPUT_* macros handle this correctly. You set
USER_LABEL_PREFIX to an underscore, and then you add the
USER_LABEL_PREFIX unless the symbol name starts with '*'. See the
ASM_GENERATE_INTERNAL_LABEL docs. This stuff can be tricky. You will
probably have to step through your cc1 port in gdb to see exactly what
is going on. It will be useful to look at an existing port that handles
this correctly; step through it in gdb to see how it works.
Jim
next prev parent reply other threads:[~2009-08-02 19:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-30 14:53 sumanth
2009-08-02 2:22 ` Michael Eager
2009-08-02 19:34 ` Jim Wilson [this message]
2009-08-03 4:32 ` sumanth
2009-08-03 16:02 ` Jim Wilson
2009-08-03 18:54 ` sumanth
2009-08-03 20:10 ` Jim Wilson
2009-08-04 15:35 ` sumanth
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