From: Richard Damon <Richard@Damon-Family.org>
To: newlib@sourceware.org
Subject: Re: printf/vsnprintf crashes while printing float values
Date: Mon, 18 Jan 2021 20:55:59 -0500 [thread overview]
Message-ID: <881a4bd5-834c-65b5-56e5-68c38e526213@Damon-Family.org> (raw)
In-Reply-To: <2021011909282122070619@qkmtech.com>
If you are trying to use printf inside an interrupt handler, that is
likely a problem. That is likely an invalid context to try to use
routines like printf.
On 1/18/21 8:28 PM, zhongcai.guo--- via Newlib wrote:
> Thanks for your reply.
>
> It crashes in irq handler but not a thread. The irq handler is installed by rtems_interrupt_handler_install(). Can you show me how to set the floating point attrbute?
>
>
>
> Best regards
> Ceasar Guo
> MC
> Email: zhongcai.guo@qkmtech.com
>
> This message may contain information that is confidential or privileged. If you are not the intended recipient, please advise the sender immediately and delete this message.
> QKM Technology (Dongguan) Co., Ltd. Limited. All rights reserved.
>
> From: Joel Sherrill
> Date: 2021-01-18 22:18
> To: zhongcai.guo
> CC: newlib
> Subject: Re: printf/vsnprintf crashes while printing float values
>
>
> On Mon, Jan 18, 2021, 3:51 AM zhongcai.guo--- via Newlib <newlib@sourceware.org> wrote:
>
> Hi,
>
> I run RTEMS system on my Xilinx Zync7000 hardware but printf/vsnprintf crash my system in interrupt. I searched long time in Google, and it seems to be an issue in Newlib than RTEMS(i guess). Therefore i want to figure out whether it
> is a fixed issued in Newlib but don't get the place to search closed/fixed bug. So i have no idea but send the email to ask for help. Any hints about the issue would be appreciate.
>
> Does the thread doing the printing have the floating point attribute? Otherwise, the flu is disabled
>
> --joel
>
>
>
>
> Best regards
> Ceasar Guo
> 运控部 / MC
> Email: zhongcai.guo@qkmtech.com
>
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--
Richard Damon
prev parent reply other threads:[~2021-01-19 1:56 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-18 9:50 zhongcai.guo
2021-01-18 14:18 ` Joel Sherrill
2021-01-19 1:28 ` zhongcai.guo
2021-01-19 1:55 ` Richard Damon [this message]
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