From: Yao Qi <qiyaoltc@gmail.com>
To: Johannes Stoelp <Johannes.Stoelp@synopsys.com>
Cc: "gdb\@sourceware.org" <gdb@sourceware.org>,
Andreas Ropers <Andreas.Ropers@synopsys.com>,
Marc Mones <Marc.Mones@synopsys.com>,
Kai Schuetz <Kai.Schuetz@synopsys.com>
Subject: Re: Infinite Stack Unwinding ARM
Date: Wed, 05 Apr 2017 11:09:00 -0000 [thread overview]
Message-ID: <86pogrp0vj.fsf@gmail.com> (raw)
In-Reply-To: <6ECCE8A0904A1643BE093611EF2098CE0147553E@DE02WEMBXB.internal.synopsys.com> (Johannes Stoelp's message of "Tue, 4 Apr 2017 12:54:09 +0000")
Johannes Stoelp <Johannes.Stoelp@synopsys.com> writes:
> * Anyone worked on an extension for the prologue analyzer to support SYSRegs and therefore
> instructions like MRS?
I don't expect prologue analyzer supporting SYSRegs and instruction
MRS. All the prologue analyzers in GDB are written in a way that
understanding instructions according to the ABI/calling convention of
each architecture and compiler's behavior, so it should be able to parse
the instruction in prologues complying to the ABI. GDB prologue
analyzer may not understand what does handwritten assembly do.
If you want GDB to unwind from there, add .cfi directives in
arch/arm64/kernel/entry.S
--
Yao (齐尧)
next prev parent reply other threads:[~2017-04-05 11:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-04 12:54 Johannes Stoelp
2017-04-05 11:09 ` Yao Qi [this message]
2017-04-07 7:15 ` Johannes Stoelp
2017-04-08 5:00 ` Duane Ellis
2017-04-10 12:01 ` Yao Qi
2017-04-11 16:20 ` Johannes Stoelp
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