Re: [TF-M] Inline asm syntax unified and symbol reference in IAR toolchain

Hi Thomas,

Thanks for the confirm 😉

Let’s see if we can refine this part from a coding perspective.

/Ken

From: TF-M tf-m-bounces@lists.trustedfirmware.org On Behalf Of Thomas Törnblom via TF-M Sent: Tuesday, October 19, 2021 4:53 PM To: tf-m@lists.trustedfirmware.org Subject: Re: [TF-M] Inline asm syntax unified and symbol reference in IAR toolchain

Hi Ken,

We have an open ticket for just consuming the ".syntax unified", which is set to be fixed in a future update.

I've tested your suggestion for "#pragma required" and it doesn't seem to work.

Cheers, Thomas Den 2021-10-19 kl. 09:22, skrev Ken Liu via TF-M: Hi Thomas and all,

I noticed there are some

#if !defined(__ICCARM__) ".syntax unified \n" #endif

In source code, looks like �.syntax unified� is not support in IAR, is that true? If it could not be supported in a short term, we can define some wrapper such as:

#ifdef __ICCARM__ #define CLAIM_SYNTAX_UNIFIED �\n� #else #define CLAIM_SYNTAX_UNIFIED ".syntax unified \n" #endif

Another question is about the: #if defined(__ICCARM__) #pragma required = do_schedule #endif

If we claim do_schedule in the constraints, is the above �#pragma required� still needed?

__asm (��. :: �i�(do_schedule));

We can create a patch to test this � using a constraint looks more proper.

Thanks.

/Ken

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Thomas T�rnblom, Product Engineer IAR Systems AB Box 23051, Strandbodgatan 1 SE-750 23 Uppsala, SWEDEN Mobile: +46 76 180 17 80 Fax: +46 18 16 78 01 E-mail: thomas.tornblom@iar.commailto:thomas.tornblom@iar.com Website: www.iar.comhttp://www.iar.com Twitter: www.twitter.com/iarsystemshttp://www.twitter.com/iarsystems