From: Yao Qi <yao@codesourcery.com>
To: Mark Kettenis <mark.kettenis@xs4all.nl>
Cc: <gdb-patches@sourceware.org>
Subject: Re: [PATCH/arm] Backtrace through exception frames on arm/cortex-m target
Date: Tue, 13 Nov 2012 14:44:00 -0000 [thread overview]
Message-ID: <50A25CB7.6060205@codesourcery.com> (raw)
In-Reply-To: <201211131427.qADERVUl015787@glazunov.sibelius.xs4all.nl>
On 11/13/2012 10:27 PM, Mark Kettenis wrote:
>> + unwound_sp = get_frame_register_unsigned (this_frame, ARM_SP_REGNUM);
> Calling get_frame_register_unsign(this_frame, ...) in the unwinder
> itself is verboten!.
Really? It is a surprise to me. I see get_frame_register_unsigned is
called in many other unwinders, for example,
*** alpha-mdebug-tdep.c:
alpha_mdebug_frame_unwind_cache[217] vfp = get_frame_register_unsigned
(this_frame, PROC_FRAME_REG (proc_desc));
*** amd64obsd-tdep.c:
amd64obsd_trapframe_cache[373] sp = get_frame_register_unsigned
(this_frame, AMD64_RSP_REGNUM);
*** arm-linux-tdep.c:
arm_linux_sigtramp_cache[258] CORE_ADDR sp =
get_frame_register_unsigned (this_frame, ARM_SP_REGNUM);
*** avr-tdep.c:
avr_frame_unwind_cache[987] this_base = get_frame_register_unsigned
(this_frame, AVR_FP_REGNUM);
Am I missing something?
--
Yao
next prev parent reply other threads:[~2012-11-13 14:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-13 14:16 Yao Qi
2012-11-13 14:27 ` Mark Kettenis
2012-11-13 14:44 ` Yao Qi [this message]
2012-11-13 15:12 ` Mark Kettenis
2012-11-13 15:50 ` Joel Brobecker
2012-11-14 2:23 ` Yao Qi
2012-11-14 2:57 ` Joel Brobecker
2012-11-14 3:48 ` Yao Qi
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