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Re: [PATCH] x86 CFI extensions
- From: Daniel Jacobowitz <drow at false dot org>
- To: Jan Beulich <JBeulich at novell dot com>, Mark Kettenis <kettenis at gnu dot org>
- Cc: gdb-patches at sourceware dot org, Richard Henderson <rth at twiddle dot net>
- Date: Sat, 17 Sep 2005 16:59:39 -0400
- Subject: Re: [PATCH] x86 CFI extensions
- References: <432070850200007800024465@emea1-mh.id2.novell.com> <20050908154645.GN3966@smtp.west.cox.net> <43207BA30200007800024502@emea1-mh.id2.novell.com> <20050908161334.GP3966@smtp.west.cox.net> <43214D2D02000078000247B5@emea1-mh.id2.novell.com> <20050910055836.GA28662@twiddle.net> <4325448C0200007800024DF5@emea1-mh.id2.novell.com> <20050912074914.GA31047@twiddle.net> <432717DB.76F0.0078.0@novell.com>
On Tue, Sep 13, 2005 at 06:18:03PM +0200, Jan Beulich wrote:
> >>> Richard Henderson <rth@twiddle.net> 12.09.05 09:49:14 >>>
> >On Mon, Sep 12, 2005 at 09:04:12AM +0200, Jan Beulich wrote:
> >> But truly I think the processor-specific pieces of Dwarf's
> >> frame unwind spec should provide numbering for the complete set of
> >> registers.
> >
> >Except there is no standards body for this. So *someone* will
> >have to make it up.
> >
> >Make it up and put it in gas and gdb: that will make it a defacto
> standard.
>
> This adds to gdb a little more than the minimum set of registers
> needed
> to at least fully understand CFI annotations for Linux' pt_regs.
>
> Built and tested on i686-pc-linux-gnu and x86_64-unknown-linux-gnu.
>
> Jan
>
> gdb/
> 2005-09-13 Jan Beulich <jbeulich@novell.com>
>
> * amd64-tdep.h (AMD64_FCTRL_REGNUM, AMD64_FSTAT_REGNUM,
> AMD64_MXCSR_REGNUM): New.
> * amd64-tdep.c (amd64_dwarf_regmap): Add eflags, selector regs,
> mxcsr, fp control and status words.
> * i386-tdep.c (): Add selector regs, mxcsr, fp control and
> status
> words.
Mark, did you want to take a look at this? It seems fine to me.
--
Daniel Jacobowitz
CodeSourcery, LLC