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Message
From: Sabri Gecal<Icefox186@h...>
Date: Mon Mar 3 07:31:33 CET 2008
Subject: [openrisc] how use div in or1k
Here an Example:
or32-uclinux-gcc -I. -nostartfiles -mhard-div -g -T startup.ld -o test.o
-Wall -W startup.S main.c
the option: -mhard-div is your solution
yueng wrote:
>
> in the C code
>
> a = b/c ; // all integers
>
> after compiler link
> it generate a l.jal 0 <_reset_100-0x100> , not a div instruction
> then jump to here
> Disassembly of section .vectors:
> 23
> 24 00000000 <_reset_100-0x100>:
> 25 ...
> 26
> 27 00000100 <_reset_100>:
> 28 100: 15 00 00 00 l.nop 0x0
> 29 104: 00 00 08 1b l.j 2170 <_reset_except>
> 30 108: 15 00 00 00 l.nop 0x0
> 31 ...
>
>
> but a=b*c, will generate a l.mul r3,r3,r4
>
> how can i compile a correct div?
>
> thank you.
>
>
>
>
>
--
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