Dear zzs,
In message 20110715161531.GA5221@greatfirst.com you wrote:
Today I found the "wrong code" :
Very well - thanks.
and the __udivsi3 contain the "wrong code" :
20111cfc <__udivsi3>: 20111cfc: e2512001 subs r2, r1, #1 ; 0x1 20111d00: 012fff1e bxeq lr 20111d04: 3a000023 bcc 20111d98 <__udivsi3+0x9c> 20111d08: e1500001 cmp r0, r1 20111d0c: 9a00001a bls 20111d7c <__udivsi3+0x80> 20111d10: e1110002 tst r1, r2 20111d14: 0a00001b beq 20111d88 <__udivsi3+0x8c> 20111d18: e16f3f11 clz r3, r1 # ***this is the "wrong code" 20111d1c: e16f2f10 clz r2, r0 20111d20: e0432002 sub r2, r3, r2
...
Architectures
This instruction is available in ARM architecture versions 5 and above.But at91rm9200 is armv4.
This is to be expected. It comes from using the GCC library routines from ELDK, which are configured for an ARMv5TE architecture.
Does this mean I can't use eldk5.0 for at91rm9200 ? If yes, How can I
You can use it, but you must make sure to rebuild the needed GCC library routines as needed for your target.
See the USE_PRIVATE_LIBGCC make option, i. e. use:
USE_PRIVATE_LIBGCC=yes make ...
Best regards,
Wolfgang Denk