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Date: Sun, 22 Nov 2015 21:36:45 -0500 (EST) From: Nicolas Pitre <nicolas.pitre@...aro.org> To: Arnd Bergmann <arnd@...db.de> cc: Russell King - ARM Linux <linux@....linux.org.uk>, Peter Maydell <peter.maydell@...aro.org>, Måns Rullgård <mans@...sr.com>, "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>, Stephen Boyd <sboyd@...eaurora.org>, lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>, Steven Rostedt <rostedt@...dmis.org>, arm-mail-list <linux-arm-kernel@...ts.infradead.org> Subject: Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions On Sun, 22 Nov 2015, Arnd Bergmann wrote: > I've also found some /proc/cpuinfo output to cross-reference SoCs > to their core names. > > variant part revision name features > dove: 0 0x581 5 PJ4 idivt I just managed to boot my dusty Dove DB and ran a quick test programon it. Its cpuinfo corresponds to the above. $ cat m.c #include <stdio.h> int mydiv(int, int); int main() { printf("div test\n"); printf("%d\n", mydiv(12345678, 37)); return 0; } $ cat d.c int mydiv(int x, int y) { return x/y; } $ gcc -o test m.c d.c $ ./test div test 333666 $ gcc -o test m.c d.c -march=armv7ve -mthumb $ ./test div test 333666 $ gcc -o test m.c d.c -march=armv7ve -marm $ ./test div test Illegal instruction (core dumped) $ Nicolas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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