From: Russell King - ARM Linux <linux@arm.linux.org.uk> To: Arnd Bergmann <arnd@arndb.de> Cc: "Peter Maydell" <peter.maydell@linaro.org>, "Måns Rullgård" <mans@mansr.com>, "Nicolas Pitre" <nico@fluxnic.net>, "linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>, "Stephen Boyd" <sboyd@codeaurora.org>, "lkml - Kernel Mailing List" <linux-kernel@vger.kernel.org>, "Steven Rostedt" <rostedt@goodmis.org>, arm-mail-list <linux-arm-kernel@lists.infradead.org> Subject: Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions Date: Sun, 22 Nov 2015 20:03:26 +0000 [thread overview] Message-ID: <20151122200326.GK8644@n2100.arm.linux.org.uk> (raw) In-Reply-To: <4527012.vmieWOaE32@wuerfel> On Sun, Nov 22, 2015 at 08:58:08PM +0100, Arnd Bergmann wrote: > does it work with -mcpu=cortex-a15? I've tried crosstool as versions > 2.23.52.20130913, 2.24.0.20141017 and 2.25.51.20150518, and they > all seem to behave as expected, failing with -mcpu=cortex-a9 and > marvell-pj4 but succeeding with -mcpu=cortex-a15 or marvell-pj4+idiv. Appears not: root@cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='cortex-a15+idiv' -marm /tmp/ccSovg32.s: Assembler messages: /tmp/ccSovg32.s:32: Error: selected processor does not support ARM mode `udiv ip,r5,r4' root@cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='cortex-a15+idiv' -mthumb /tmp/cchbT3EE.s: Assembler messages: /tmp/cchbT3EE.s:36: Error: selected processor does not support Thumb mode `udiv r6,r5,r4' Same without the +idiv. > I've also found some /proc/cpuinfo output to cross-reference SoCs > to their core names. > > variant part revision name features > mmp2: 0 0x581 5 PJ4 idivt > dove: 0 0x581 5 PJ4 idivt Yes, that agrees with my dove. -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
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From: linux@arm.linux.org.uk (Russell King - ARM Linux) To: linux-arm-kernel@lists.infradead.org Subject: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions Date: Sun, 22 Nov 2015 20:03:26 +0000 [thread overview] Message-ID: <20151122200326.GK8644@n2100.arm.linux.org.uk> (raw) In-Reply-To: <4527012.vmieWOaE32@wuerfel> On Sun, Nov 22, 2015 at 08:58:08PM +0100, Arnd Bergmann wrote: > does it work with -mcpu=cortex-a15? I've tried crosstool as versions > 2.23.52.20130913, 2.24.0.20141017 and 2.25.51.20150518, and they > all seem to behave as expected, failing with -mcpu=cortex-a9 and > marvell-pj4 but succeeding with -mcpu=cortex-a15 or marvell-pj4+idiv. Appears not: root at cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='cortex-a15+idiv' -marm /tmp/ccSovg32.s: Assembler messages: /tmp/ccSovg32.s:32: Error: selected processor does not support ARM mode `udiv ip,r5,r4' root at cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='cortex-a15+idiv' -mthumb /tmp/cchbT3EE.s: Assembler messages: /tmp/cchbT3EE.s:36: Error: selected processor does not support Thumb mode `udiv r6,r5,r4' Same without the +idiv. > I've also found some /proc/cpuinfo output to cross-reference SoCs > to their core names. > > variant part revision name features > mmp2: 0 0x581 5 PJ4 idivt > dove: 0 0x581 5 PJ4 idivt Yes, that agrees with my dove. -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.
next prev parent reply other threads:[~2015-11-22 20:03 UTC|newest] Thread overview: 125+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-11-21 1:23 [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions Stephen Boyd 2015-11-21 1:23 ` Stephen Boyd 2015-11-21 1:23 ` [RFC/PATCH 1/3] scripts: Allow recordmcount to be used without tracing enabled Stephen Boyd 2015-11-21 1:23 ` Stephen Boyd 2015-11-21 1:23 ` [RFC/PATCH 2/3] recordmcount: Record locations of __aeabi_{u}idiv() calls on ARM Stephen Boyd 2015-11-21 1:23 ` Stephen Boyd 2015-11-21 10:13 ` Russell King - ARM Linux 2015-11-21 10:13 ` Russell King - ARM Linux 2015-11-23 20:53 ` Stephen Boyd 2015-11-23 20:53 ` Stephen Boyd 2015-11-23 20:58 ` Steven Rostedt 2015-11-23 20:58 ` Steven Rostedt 2015-11-23 21:03 ` Russell King - ARM Linux 2015-11-23 21:03 ` Russell King - ARM Linux 2015-11-23 21:16 ` Stephen Boyd 2015-11-23 21:16 ` Stephen Boyd 2015-11-23 21:33 ` Russell King - ARM Linux 2015-11-23 21:33 ` Russell King - ARM Linux 2015-11-24 1:04 ` Stephen Boyd 2015-11-24 1:04 ` Stephen Boyd 2015-11-21 1:23 ` [RFC/PATCH 3/3] ARM: Replace calls to __aeabi_{u}idiv with udiv/sdiv instructions Stephen Boyd 2015-11-21 1:23 ` Stephen Boyd 2015-11-21 11:50 ` Måns Rullgård 2015-11-21 11:50 ` Måns Rullgård 2015-11-23 20:49 ` Stephen Boyd 2015-11-23 20:49 ` Stephen Boyd 2015-11-23 20:54 ` Måns Rullgård 2015-11-23 20:54 ` Måns Rullgård 2015-11-23 21:16 ` Stephen Boyd 2015-11-23 21:16 ` Stephen Boyd 2015-11-21 20:39 ` [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions Arnd Bergmann 2015-11-21 20:39 ` Arnd Bergmann 2015-11-21 20:45 ` Måns Rullgård 2015-11-21 20:45 ` Måns Rullgård 2015-11-21 21:00 ` Arnd Bergmann 2015-11-21 21:00 ` Arnd Bergmann 2015-11-21 22:11 ` Måns Rullgård 2015-11-21 22:11 ` Måns Rullgård 2015-11-21 23:14 ` Arnd Bergmann 2015-11-21 23:14 ` Arnd Bergmann 2015-11-21 23:21 ` Arnd Bergmann 2015-11-21 23:21 ` Arnd Bergmann 2015-11-22 13:29 ` Peter Maydell 2015-11-22 13:29 ` Peter Maydell 2015-11-22 19:25 ` Arnd Bergmann 2015-11-22 19:25 ` Arnd Bergmann 2015-11-22 19:30 ` Måns Rullgård 2015-11-22 19:30 ` Måns Rullgård 2015-11-22 19:30 ` Måns Rullgård 2015-11-22 19:47 ` Russell King - ARM Linux 2015-11-22 19:47 ` Russell King - ARM Linux 2015-11-22 19:58 ` Arnd Bergmann 2015-11-22 19:58 ` Arnd Bergmann 2015-11-22 20:03 ` Russell King - ARM Linux [this message] 2015-11-22 20:03 ` Russell King - ARM Linux 2015-11-22 20:37 ` Arnd Bergmann 2015-11-22 20:37 ` Arnd Bergmann 2015-11-22 20:39 ` Måns Rullgård 2015-11-22 20:39 ` Måns Rullgård 2015-11-22 20:39 ` Måns Rullgård 2015-11-22 21:18 ` Arnd Bergmann 2015-11-22 21:18 ` Arnd Bergmann 2015-11-23 2:36 ` Nicolas Pitre 2015-11-23 2:36 ` Nicolas Pitre 2015-11-23 8:15 ` Arnd Bergmann 2015-11-23 8:15 ` Arnd Bergmann 2015-11-23 14:14 ` Christopher Covington 2015-11-23 14:14 ` Christopher Covington 2015-11-23 15:32 ` Arnd Bergmann 2015-11-23 15:32 ` Arnd Bergmann 2015-11-23 20:38 ` Stephen Boyd 2015-11-23 20:38 ` Stephen Boyd 2015-11-23 21:19 ` Arnd Bergmann 2015-11-23 21:19 ` Arnd Bergmann 2015-11-23 21:32 ` Stephen Boyd 2015-11-23 21:32 ` Stephen Boyd 2015-11-23 21:57 ` Arnd Bergmann 2015-11-23 21:57 ` Arnd Bergmann 2015-11-23 23:13 ` Stephen Boyd 2015-11-23 23:13 ` Stephen Boyd 2015-11-24 10:17 ` Arnd Bergmann 2015-11-24 10:17 ` Arnd Bergmann 2015-11-24 12:15 ` Måns Rullgård 2015-11-24 12:15 ` Måns Rullgård 2015-11-24 12:15 ` Måns Rullgård 2015-11-24 13:45 ` Arnd Bergmann 2015-11-24 13:45 ` Arnd Bergmann 2015-11-25 1:51 ` Stephen Boyd 2015-11-25 1:51 ` Stephen Boyd 2015-11-25 7:21 ` Arnd Bergmann 2015-11-25 7:21 ` Arnd Bergmann 2015-11-24 0:13 ` Stephen Boyd 2015-11-24 0:13 ` Stephen Boyd 2015-11-24 8:53 ` Stephen Boyd 2015-11-24 8:53 ` Stephen Boyd 2015-11-24 10:38 ` Arnd Bergmann 2015-11-24 10:38 ` Arnd Bergmann 2015-11-24 10:42 ` Russell King - ARM Linux 2015-11-24 10:42 ` Russell King - ARM Linux 2015-11-24 10:42 ` Russell King - ARM Linux 2015-11-24 12:10 ` Måns Rullgård 2015-11-24 12:10 ` Måns Rullgård 2015-11-24 12:10 ` Måns Rullgård 2015-11-24 12:23 ` Russell King - ARM Linux 2015-11-24 12:23 ` Russell King - ARM Linux 2015-11-24 12:29 ` Måns Rullgård 2015-11-24 12:29 ` Måns Rullgård 2015-11-24 12:29 ` Måns Rullgård 2015-11-24 14:00 ` Russell King - ARM Linux 2015-11-24 14:00 ` Russell King - ARM Linux 2015-11-24 14:03 ` Måns Rullgård 2015-11-24 14:03 ` Måns Rullgård 2015-11-24 14:03 ` Måns Rullgård 2015-11-24 10:39 ` Russell King - ARM Linux 2015-11-24 10:39 ` Russell King - ARM Linux 2015-11-24 20:07 ` Stephen Boyd 2015-11-24 20:07 ` Stephen Boyd 2015-11-24 20:35 ` Russell King - ARM Linux 2015-11-24 20:35 ` Russell King - ARM Linux 2015-11-24 21:11 ` Arnd Bergmann 2015-11-24 21:11 ` Arnd Bergmann 2016-01-13 1:51 ` Stephen Boyd 2016-01-13 1:51 ` Stephen Boyd 2015-11-24 10:37 ` Russell King - ARM Linux 2015-11-24 10:37 ` Russell King - ARM Linux
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