Date: Sun, 3 May 2015 22:05:05 +0000 From: =?iso-8859-1?Q?Wei=DF=2C__Dr=2E_J=FCrgen?= <weiss@uni-mainz.de> To: =?iso-8859-1?Q?=27Manuel_St=FChn=27?= <freebsdnewbie@freenet.de>, "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org> Subject: RE: gdb on armv6 Message-ID: <549bd3f33fcb43218ddeac53947702e9@e15be-03.zdv.Uni-Mainz.DE> In-Reply-To: <20150503120604.2db4bdcf@freebsd-lt.fritz.box> References: <20150503120604.2db4bdcf@freebsd-lt.fritz.box>
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With FreeBSD current and option ARM_NEW_PMAP you should have at least
svn revision=3D282151. Without option ARM_NEW_PMAP, at least from a
cursory code inspection, I would not expect it to work at all.
Regards
Juergen Weiss
Juergen Weiss |Universitaet Mainz, Zentrum fuer Datenverarbeitung,
weiss@uni-mainz.de |55099 Mainz, Tel: +49(6131)39-26361, FAX: +49(6131)39-2=
6407
> -----Original Message-----
> From: owner-freebsd-arm@freebsd.org [mailto:owner-freebsd-arm@freebsd.org=
] On Behalf Of
> Manuel St=FChn
> Sent: Sunday, May 03, 2015 12:06 PM
> To: freebsd-arm@freebsd.org
> Subject: gdb on armv6
>=20
> Hi list,
>=20
> is there something special to consider when debugging applications on arm=
v6(-hf)?
>=20
> I'm using FreeBSD-Current on a Wandboard-QUAD. Unfortunately it is not po=
ssible
> for me to step through even simple applications. The program gets execute=
d until it
> exits even if i use the step command.
>=20
> Example:
> manuel@wandboard:~/devel/gdb % cat gdb-test.c
>=20
> #include <stdio.h>
> #include <stdlib.h>
>=20
> int
> main( int argc, char* argv[] )
> {
> int value;
>=20
> for( value =3D 0; value < 10; value++ )
> {
> printf("value: %i\n", value );
> }
>=20
> return value;
> }
>=20
> manuel@wandboard:~/devel/gdb % clang -Wall -Werror -g3 -O0 -o app gdb-tes=
t.c
> manuel@wandboard:~/devel/gdb % gdb app
> GNU gdb 6.1.1 [FreeBSD]
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you =
are
> welcome to change it and/or distribute copies of it under certain conditi=
ons.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for detail=
s.
> This GDB was configured as "armv6hf-marcel-freebsd"...
> (gdb) break main
> Breakpoint 1 at 0x8610: file gdb-test.c, line 9.
> (gdb) run
> Starting program: /usr/home/manuel/devel/gdb/app
>=20
> Breakpoint 1, main (argc=3D1, argv=3D0xbfbffc30) at gdb-test.c:9
> 9 for( value =3D 0; value < 10; value++ )
> Current language: auto; currently minimal
> (gdb) step
> value: 0
> value: 1
> value: 2
> value: 3
> value: 4
> value: 5
> value: 6
> value: 7
> value: 8
> value: 9
>=20
> Program exited with code 012.
> (gdb)
>=20
> This exact behaviour can also be seen on my other boards like BBB or RPI-=
B.
>=20
> Any hints?
>=20
> Thanks in advance.
>=20
> --
> Manuel Stuehn
> _______________________________________________
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> http://lists.freebsd.org/mailman/listinfo/freebsd-arm
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