Date: Sun, 3 May 2015 12:06:04 +0200 From: Manuel =?ISO-8859-1?Q?St=FChn?= <freebsdnewbie@freenet.de> To: freebsd-arm@freebsd.org Subject: gdb on armv6 Message-ID: <20150503120604.2db4bdcf@freebsd-lt.fritz.box>
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Hi list,
is there something special to consider when debugging applications on armv6(-hf)?
I'm using FreeBSD-Current on a Wandboard-QUAD. Unfortunately it is not possible
for me to step through even simple applications. The program gets executed until it
exits even if i use the step command.
Example:
manuel@wandboard:~/devel/gdb % cat gdb-test.c
#include <stdio.h>
#include <stdlib.h>
int
main( int argc, char* argv[] )
{
int value;
for( value = 0; value < 10; value++ )
{
printf("value: %i\n", value );
}
return value;
}
manuel@wandboard:~/devel/gdb % clang -Wall -Werror -g3 -O0 -o app gdb-test.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 conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
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
Breakpoint 1, main (argc=1, argv=0xbfbffc30) at gdb-test.c:9
9 for( value = 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
Program exited with code 012.
(gdb)
This exact behaviour can also be seen on my other boards like BBB or RPI-B.
Any hints?
Thanks in advance.
--
Manuel Stuehn
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