On Sun, Nov 22, 2015 at 08:25:27PM +0100, Arnd Bergmann wrote: > The question is really about Marvell Dove, MMP and Armada 370, > which are all based on PJ4 or PJ4B (CPU part : 0x581), so ARMv7-A > and report idivt support but idiva. Well, it's pretty hard to test when binutils blocks your ability to write assembly using the instructions. root@cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='cortex-a9+idiv' -marm /tmp/cc8WPQiB.s: Assembler messages: /tmp/cc8WPQiB.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-a9+idiv' -mthumb /tmp/ccRzgAlM.s: Assembler messages: /tmp/ccRzgAlM.s:36: Error: selected processor does not support Thumb mode `udiv r6,r5,r4' root@cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='marvell-pj4+idiv' -mthumb /tmp/cc1JYyFD.s: Assembler messages: /tmp/cc1JYyFD.s:36: Error: selected processor does not support Thumb mode `udiv r6,r5,r4' root@cubox:~# gcc -O2 -o idiv idiv.c -Wa,-mcpu='marvell-pj4+idiv' -marm /tmp/ccEQbQpp.s: Assembler messages: /tmp/ccEQbQpp.s:32: Error: selected processor does not support ARM mode `udiv ip,r5,r4' That's binutils 2.24 and gcc 4.8.4 as found on Ubuntu 14.04. I'm sorry, but I don't have spare time to work out what the opcodes would be. -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
