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Re: [RFA] Fix an unwinding problem on alpha-tru64
- From: Joel Brobecker <brobecker at gnat dot com>
- To: Andrew Cagney <cagney at gnu dot org>
- Cc: gdb-patches at sources dot redhat dot com
- Date: Fri, 2 Apr 2004 15:45:11 -0800
- Subject: Re: [RFA] Fix an unwinding problem on alpha-tru64
- References: <20040401003449.GY888@gnat.com> <406DF0D7.5060704@gnu.org>
> Applied and committed, trunk and branch.
Thank you.
> >Index: alpha-tdep.c
> >===================================================================
> >RCS file: /cvs/src/src/gdb/alpha-tdep.c,v
> >retrieving revision 1.128
> >diff -u -p -r1.128 alpha-tdep.c
> >--- alpha-tdep.c 23 Mar 2004 14:47:54 -0000 1.128
> >+++ alpha-tdep.c 31 Mar 2004 23:58:36 -0000
> >@@ -1029,6 +1029,16 @@ alpha_heuristic_frame_unwind_cache (stru
> > {
> > reg = (word & 0x03e00000) >> 21;
> >
> >+ /* Ignore this instruction if we have already encountered
> >+ an instruction saving the same register earlier in the
> >+ function code. The current instruction does not tell
> >+ us where the original value upon function entry is saved.
> >+ All it says is that the function we are scanning reused
> >+ that register for some computation of its own, and is now
> >+ saving its result. */
> >+ if (info->saved_regs[reg])
> >+ continue;
> >+
> > if (reg == 31)
> > continue;
--
Joel