From: "Linas Vepstas (Code Aurora)" <linas@codeaurora.org>
To: Pavel Machek <pavel@ucw.cz>
Cc: Richard Kuo <rkuo@codeaurora.org>,
linux-kernel@vger.kernel.org, linux-hexagon@vger.kernel.org
Subject: ARM assembly syntax (was Re: [patch 03/36] Hexagon: Add bitops support)
Date: Tue, 30 Aug 2011 16:14:49 -0500 [thread overview]
Message-ID: <20110830211449.GC7047@codeaurora.org> (raw)
In-Reply-To: <20110826203410.GB6630@ucw.cz>
On Fri, Aug 26, 2011 at 10:34:10PM +0200, Pavel Machek wrote:
> Hi!
>
> > + __asm__ __volatile__ (
> > + " {R10 = %1; R11 = asr(%2,#5); }\n"
> > + " {R10 += asl(R11,#2); R11 = and(%2,#0x1f)}\n"
> > + "1: R12 = memw_locked(R10);\n"
> > + " { P0 = tstbit(R12,R11); R12 = clrbit(R12,R11); }\n"
> > + " memw_locked(R10,P1) = R12;\n"
> > + " {if !P1 jump 1b; %0 = mux(P0,#1,#0);}\n"
>
> Nice assembly syntax, btw. I can only wish architectures such as arm
> used something as readable...
Yes, I, too, was very pleasantly surprised when I first saw this.
Of course, one *could* alter binutils to accept something similar
for ARM, and then alter gcc to spit it out. Whether anyone would use
this isn't clear .. and I can already almost hear certain maintainers
telling us how much of a bad idea this is from the maintainership
point-of-view ....
--linas
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
next prev parent reply other threads:[~2011-08-30 21:14 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-17 16:34 [patch 00/36] Hexagon: Add support for Qualcomm Hexagon architecture Richard Kuo
2011-08-17 16:34 ` [patch 01/36] Hexagon: Add generic headers Richard Kuo
2011-08-17 19:19 ` Arnd Bergmann
2011-08-17 16:34 ` [patch 02/36] Hexagon: Core arch-specific header files Richard Kuo
2011-08-17 19:19 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 03/36] Hexagon: Add bitops support Richard Kuo
2011-08-17 19:19 ` Arnd Bergmann
2011-08-26 20:34 ` Pavel Machek
2011-08-30 21:14 ` Linas Vepstas (Code Aurora) [this message]
2011-09-02 16:53 ` ARM assembly syntax (was Re: [patch 03/36] Hexagon: Add bitops support) Pavel Machek
2011-08-17 16:35 ` [patch 04/36] Hexagon: Add atomic ops support Richard Kuo
2011-08-17 19:20 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 05/36] Hexagon: Add syscalls Richard Kuo
2011-08-17 19:29 ` Arnd Bergmann
2011-08-17 20:12 ` Jonas Bonn
2011-08-17 16:35 ` [patch 06/36] Hexagon: Add processor and system headers Richard Kuo
2011-08-17 19:31 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 07/36] Hexagon: Add threadinfo Richard Kuo
2011-08-17 19:37 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 08/36] Hexagon: Add delay functions Richard Kuo
2011-08-17 19:38 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 09/36] Hexagon: Add checksum functions Richard Kuo
2011-08-17 19:40 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 10/36] Hexagon: Add memcpy and memset accelerated functions Richard Kuo
2011-08-17 16:35 ` [patch 11/36] Hexagon: Add hypervisor interface Richard Kuo
2011-08-17 16:35 ` [patch 12/36] Hexagon: Export ksyms defined in assembly files Richard Kuo
2011-08-17 16:35 ` [patch 13/36] Hexagon: Support dynamic module loading Richard Kuo
2011-08-17 19:41 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 14/36] Hexagon: Add signal functions Richard Kuo
2012-02-11 23:27 ` hexagon: signal handling bugs Al Viro
2012-02-15 17:45 ` Richard Kuo
2012-02-15 18:18 ` Linas Vepstas
2011-08-17 16:35 ` [patch 15/36] Hexagon: Add init_task and process functions Richard Kuo
2011-08-17 19:45 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 16/36] Hexagon: Add startup code Richard Kuo
2011-08-17 16:35 ` [patch 17/36] Hexagon: Add interrupts Richard Kuo
2011-08-17 16:35 ` [patch 18/36] Hexagon: Add time and timer functions Richard Kuo
2011-08-17 16:35 ` [patch 19/36] Hexagon: Add ptrace support Richard Kuo
2011-08-17 19:47 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 20/36] Hexagon: Provide basic debugging and system trap support Richard Kuo
2011-08-17 16:35 ` [patch 21/36] Hexagon: Add SMP support Richard Kuo
2011-08-17 16:35 ` [patch 22/36] Hexagon: Add locking types and functions Richard Kuo
2011-08-17 16:35 ` [patch 23/36] Hexagon: Add user access functions Richard Kuo
2011-08-17 16:35 ` [patch 24/36] Hexagon: Provide basic implementation and/or stubs for I/O routines Richard Kuo
2011-08-17 19:55 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 25/36] Hexagon: Implement basic cache-flush support Richard Kuo
2011-08-17 16:35 ` [patch 26/36] Hexagon: Implement basic TLB management routines for Hexagon Richard Kuo
2011-08-17 16:35 ` [patch 27/36] Hexagon: Provide DMA implementation Richard Kuo
2011-08-17 20:01 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 28/36] Hexagon: Add ioremap support Richard Kuo
2011-08-17 16:35 ` [patch 29/36] Hexagon: Add page table header files & etc Richard Kuo
2011-08-17 16:35 ` [patch 30/36] Hexagon: Add page-fault support Richard Kuo
2011-08-17 16:35 ` [patch 31/36] Hexagon: kgdb support files Richard Kuo
2011-08-17 16:35 ` [patch 32/36] Hexagon: Comet platform support Richard Kuo
2011-08-17 20:07 ` Arnd Bergmann
2011-08-17 23:45 ` Linas Vepstas
2011-08-17 20:08 ` David Brown
2011-08-17 16:35 ` [patch 33/36] Hexagon: Platform-generic support Richard Kuo
2011-08-17 20:20 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 34/36] Hexagon: Add configuration and makefiles for the Hexagon architecture Richard Kuo
2011-08-17 20:27 ` Arnd Bergmann
2011-08-17 16:35 ` [patch 35/36] Hexagon: Add basic stacktrace functionality for " Richard Kuo
2011-08-17 16:35 ` [patch 36/36] Hexagon: Add self to MAINTAINERS Richard Kuo
2011-08-17 19:00 ` [patch 00/36] Hexagon: Add support for Qualcomm Hexagon architecture Zan Lynx
2011-08-17 19:42 ` Richard Kuo
2011-08-17 20:34 ` Arnd Bergmann
2011-08-18 0:31 ` Richard Kuo
2011-08-31 5:48 ` Avi Kivity
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