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Date: Fri, 07 Mar 2003 16:32:00 -0000
From: Andrew Cagney <ac131313@redhat.com>
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To: Michal Ludvig <mludvig@suse.cz>
Cc: GDB Patches <gdb-patches@sources.redhat.com>
Subject: Re: [RFA] Debug info detection.
References: <3E67D471.3040100@suse.cz> <3E68B9FE.6090207@redhat.com> <3E68BF3C.2090503@suse.cz>
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> For now I have...
> 
> const struct frame_unwind *
> x86_64_frame_p (CORE_ADDR pc)
> {
>   struct frame_unwind *unwind_cfi = NULL;
>   struct frame_unwind *unwind_asm = &x86_64_asm_frame_unwind;
>   struct frame_unwind *unwind_sigtramp = &x86_64_sigtramp_frame_unwind;
>   char *name;
> 
>   find_pc_partial_function (pc, &name, NULL, NULL);
>   if (gdbarch_pc_in_sigtramp (current_gdbarch, pc, name))
>     return unwind_sigtramp;
>   else if (cfi_have_unwind_info (pc))
>     return unwind_cfi;   /* Returns NULL here...  */
>   else
>     return unwind_asm;
> }

The function x86-64-tdep.c:x86_64_frame_p() should contain:
	return x86_64_unwind;

The file/function dwarf2cfi-frame.c:dwarf2cfi_frame_p() should contain:
	if (cfi_have_unwind_info (pc))
	     return dwarf2cfi_unwind;

(Assuming sigtramps are os specific) The file/function 
x86-64-linux-tdep.c:x86_64_linux_sigtramp_frame_p() should contain:
 >   if (gdbarch_pc_in_sigtramp (current_gdbarch, pc, name))
 >     return x86_64_linux_sigtramp_unwind;

Andrew