On Fri, Feb 19, 2010 at 05:49:59PM +0100, Olivier Houchard wrote:
> >
> > Strange:
>
>
> Not so much, the first values for ras_start/end were chosen to be immediate
> values, so you could just mov them, but the new one aren't.
> Try something like the patch attached instead (untested, I have no arm setup
> here, but you'll get the idea).
I just got an idea in wqhich direction to look, just to see a lot of fog
there, but that's my problem.
I'm not very good with ARM assembly and inline assembly, although I did
know a goo amount of alpha, 6502, 68k, ... assembly.
Anyway - your patch works (with minor fix):
[213]Please.tell.me.who.am.I# host -a www.freebsd.org 127.0.0.1
Trying "www.freebsd.org"
Using domain server:
Name: 10.1.1.9
Address: 10.1.1.9#53
Aliases:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26655
;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 3, ADDITIONAL: 5
;; QUESTION SECTION:
;www.freebsd.org. IN ANY
;; ANSWER SECTION:
www.freebsd.org. 3600 IN MX 0 .
www.freebsd.org. 3600 IN AAAA 2001:4f8:fff6::21
www.freebsd.org. 3600 IN A 69.147.83.33
;; AUTHORITY SECTION:
freebsd.org. 2019 IN NS ns3.isc-sns.info.
freebsd.org. 2019 IN NS ns2.isc-sns.com.
freebsd.org. 2019 IN NS ns1.isc-sns.net.
;; ADDITIONAL SECTION:
ns3.isc-sns.info. 2019 IN A 63.243.194.1
ns3.isc-sns.info. 2019 IN AAAA 2001:5a0:10::1
ns2.isc-sns.com. 19745 IN A 38.103.2.1
ns1.isc-sns.net. 19745 IN A 72.52.71.1
ns1.isc-sns.net. 19745 IN AAAA 2001:470:1a::1
Received 284 bytes from 10.1.1.9#53 in 355 ms
[214]Please.tell.me.who.am.I#
>
> Regards,
>
> Olivier
> Index: contrib/bind9/lib/isc/arm/include/isc/atomic.h
> ===================================================================
> --- contrib/bind9/lib/isc/arm/include/isc/atomic.h (revision 203777)
> +++ contrib/bind9/lib/isc/arm/include/isc/atomic.h (working copy)
> @@ -49,26 +49,22 @@
> static inline isc_int32_t
> isc_atomic_cmpxchg(isc_int32_t *p, isc_int32_t cmpval, isc_int32_t val)
> {
> - register int done, ras_start;
> + register int done, ras_start = #0xffff1004;
I had to remove the '#' in this line:
register int done, ras_start = 0xffff1004;
>
> __asm __volatile("1:\n"
> "adr %1, 1b\n"
> - "mov %0, #0xe0000004\n"
> "str %1, [%0]\n"
> - "mov %0, #0xe0000008\n"
> "adr %1, 2f\n"
> - "str %1, [%0]\n"
> + "str %1, [%0, #4]\n"
> "ldr %1, [%2]\n"
> "cmp %1, %3\n"
> "streq %4, [%2]\n"
> "2:\n"
> "mov %3, #0\n"
> - "mov %0, #0xe0000004\n"
> "str %3, [%0]\n"
> "mov %3, #0xffffffff\n"
> - "mov %0, #0xe0000008\n"
> - "str %3, [%0]\n"
> - : "=r" (ras_start), "=r" (done)
> + "str %3, [%0, #4]\n"
> + : "+r" (ras_start), "=r" (done)
> ,"+r" (p), "+r" (cmpval), "+r" (val) : : "memory");
> return (done);
>
--
B.Walter <be...@bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.
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