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From: Arnd Bergmann <arnd@arndb.de>
Newsgroups: linux.kernel
Subject: Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions
Date: Sun, 22 Nov 2015 22:20:02 +0100
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On Sunday 22 November 2015 20:39:54 M=E5ns Rullg=E5rd wrote:
> Arnd Bergmann <arnd@arndb.de> writes:
>=20
> > arnd@wuerfel:/tmp$ arm-linux-gnueabihf-gcc -Wall -O2 -mcpu=3Dcortex=
-a15 idiv.c -c -o idiv-arm.o
> > arnd@wuerfel:/tmp$ objdump -dr idiv-arm.o  =20
> >
> > idiv-arm.o:     file format elf32-littlearm
> >
> > Disassembly of section .text:
> >
> > 00000000 <udiv>:
> >    0:   fbb0 f0f1       udiv    r0, r0, r1
> >    4:   4770            bx      lr
> >    6:   bf00            nop
> >
> > 00000008 <sdiv>:
> >    8:   fb90 f0f1       sdiv    r0, r0, r1
> >    c:   4770            bx      lr
> >    e:   bf00            nop
>=20
> Your compiler seems to default to thumb so you should add -marm.
>=20

Sorry about that.

=09Arnd

arnd@wuerfel:/tmp$ arm-linux-gnueabihf-gcc -Wall -O2 -mcpu=3Dcortex-a15=
 idiv.c -c -o idiv-arm.o -marm
arnd@wuerfel:/tmp$ objdump -dr idiv-arm.o=20

idiv-arm.o:     file format elf32-littlearm


Disassembly of section .text:

00000000 <udiv>:
   0:   e730f110        udiv    r0, r0, r1
   4:   e12fff1e        bx      lr

00000008 <sdiv>:
   8:   e710f110        sdiv    r0, r0, r1
   c:   e12fff1e        bx      lr

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