From: Michal Ludvig <mludvig@suse.cz>
To: Andrew Cagney <ac131313@redhat.com>
Cc: Daniel Jacobowitz <drow@mvista.com>, gdb <gdb@sources.redhat.com>
Subject: Re: [testsuite & dwarf2] How to handle store.exp failure on AMD64?
Date: Thu, 07 Aug 2003 21:40:00 -0000 [thread overview]
Message-ID: <3F32C75D.2010007@suse.cz> (raw)
In-Reply-To: <3F3275EC.3000702@redhat.com>
Andrew Cagney wrote:
> For this specific ABI and problem, did GCC put the value in a preserved
> regiter ...
>
>>> - GCC -O0 should should not eliminate variables, and should preserve
>>> all variables across function calls.
>>>
>>> Given that is compiled with -O0, I think GCC is failing on count #3
>>> here.
>
> or a scratch register?
Into the preserved register (%rbx).
When I added the appropriate DW_CFA_same_value instruction to the .s
file, the register was correctly unwound and the value of the variable
in an upper frame shown.
Michal Ludvig
next prev parent reply other threads:[~2003-08-07 21:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-07 8:49 Michal Ludvig
2003-08-07 13:50 ` Daniel Jacobowitz
2003-08-07 14:58 ` Andrew Cagney
2003-08-07 15:02 ` Daniel Jacobowitz
2003-08-07 15:53 ` Andrew Cagney
2003-08-07 21:40 ` Michal Ludvig [this message]
2003-08-13 3:54 ` Andrew Cagney
2003-08-13 4:54 ` Richard Henderson
2003-08-13 14:39 ` Andrew Cagney
2003-08-13 16:50 ` Richard Henderson
2003-08-13 18:23 ` Andrew Cagney
2003-08-13 23:35 ` Richard Henderson
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