Re: [RFC/PATCH 0/3] ARM: Use udiv/sdiv for __aeabi_{u}idiv library functions

Måns Rullgård
2015-11-22T20:40:06Z

Arnd Bergmann <arnd@arndb.de> writes:

> arnd@wuerfel:/tmp$ arm-linux-gnueabihf-gcc -Wall -O2 -mcpu=cortex-a15 idiv.c -c -o idiv-arm.o
> arnd@wuerfel:/tmp$ objdump -dr idiv-arm.o
>
> 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

Your compiler seems to default to thumb so you should add -marm.

--
Måns Rullgård
mans@mansr.com