#tar -jxvf gdb-7.1.tar.bz2

./configure --target=arm-linux --prefix=/home/frank/gdb --program-prefix=arm-linux-

make

make intall

./configure --target=arm-linux --host=arm-linux

linux-arm-low.c:26:21:sys/reg.h: 沒有那個檔案 或目錄
make:*****[linux-arm-low.0] Error 1

這裡的sys/reg.h是指/usr/include/sys/reg.h，在該檔案中定義的暫存器都是針對x86平臺的，對於執行
在ARM平臺上的gdbserver顯然是不對的，在configure後，將會生成一個config.h檔案，在這個檔案中定
義了相應的巨集，在config.h中我們可以看到這樣一個C語言的巨集定義，

#define HAVE_SYS_REG_H 1
在linux-arm-low.c檔案中出錯的程式碼行：
#ifdef HAVE_SYS_REG_H 
#include <sys/reg.h>
#endif

#make CC = arm-linux-gcc

GNU gdb (Sourcery G++ Lite 2008q3-72) 6.8.50.20080821-cvs

Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi".
For bug reporting instructions, please see:
<https:

[[email protected]]$gdbserver 10.27.10.48:9000 ./test_seg_fault 
Process ./test_seg_fault created; pid = 760 
Listening on port 9000 
Remote debugging from host 10.27.10.48

arm-linux-gdb/bin$ arm-linux-gdb
GNU gdb (Sourcery G++ Lite 2008q3-72) 6.8.50.20080821-cvs
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi".
For bug reporting instructions, please see:
<https://support.codesourcery.com/GNUToolchain/>.

(gdb) target remote 10.27.10.23:9000
Remote debugging using 10.27.10.23:9000
Malformed packet(b) (missing colon): ore:0;
Packet: 'T050b:00000000;0d:804ebdbe;0f:b0070040;thread:2f8;core:0;'

(gdb) symbol-file test_seg_fault
Reading symbols from /home/zfz/kernel/fs/arm-linux-gdb/bin/test_seg_fault...done.
(gdb) break main
Breakpoint 1 at 0x84a8: file test_seg_fault.c, line 7.
(gdb) info main
Undefined info command: "main". Try "help info".
(gdb) info b
Num Type Disp Enb Address What
1 breakpoint keep y 0x000084a8 in main at test_seg_fault.c:7
(gdb) c
The program is not being run.
(gdb)

[[email protected]]$gdbserver 10.27.10.48:9000 ./test_seg_fault 
Process ./test_seg_fault created; pid = 760 
Listening on port 9000 
Remote debugging from host 10.27.10.48 
readchar: Got EOF 
Remote side has terminated connection. GDBserver will reopen the connection. 
Listening on port 9000

PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/lib/jvm/j
dk1.6.0_17/bin:/home/zfz/kernel/fs/arm-linux-gdb/bin:/home/zfz/linux-
tool/usr/local/arm/4.3.2/bin"

GNU gdb (GDB) 7.1
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-unknown-linux-gnu --target=arm-linux".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.



[email protected]:~/kernel/fs/arm-linux-gdb/bin$ ./arm-linux-gdb test
./arm-linux-gdb: Symbol `acs_map' has different size in shared object, consider re-linking
GNU gdb (GDB) 7.1
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=x86_64-unknown-linux-gnu --target=arm-linux".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /home/zfz/kernel/fs/arm-linux-gdb/bin/test...done.
(gdb) target remote 10.27.10.23:9000
Remote debugging using 10.27.10.23:9000
warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.
0x400007b0 in ?? ()
(gdb) l
Cannot access memory at address 0x0
1    #include <stdio.h>
2    int main( void )
3    {
4     int i=2;
5     int x, y;
6     
7     x=(++i);
8     printf(" %d %d\n", i,x);
9     x+=(++i);
10     printf(" %d %d\n", i,x);
(gdb) l
11     x+=(++i);
12     printf(" %d %d\n", i,x);
13     i=2;
14     y=(i++)+(i++)+(i++);
15     printf(" %d %d\n", i,y);
16     
17     return 0;
18    }
19     
(gdb) break 9
Breakpoint 1 at 0x83b8: file test.c, line 9.
(gdb) c
Continuing.
Error while mapping shared library sections:
`/lib/libc.so.6': not in executable format: File format not recognized
Error while mapping shared library sections:
/lib/ld-linux.so.3: No such file or directory.

Breakpoint 1, main () at test.c:9
9     x+=(++i);
(gdb) step
10     printf(" %d %d\n", i,x);
(gdb) next
11     x+=(++i);
(gdb) next
12     printf(" %d %d\n", i,x);
(gdb) next
13     i=2;
(gdb) next
14     y=(i++)+(i++)+(i++);
(gdb) next
15     printf(" %d %d\n", i,y);
(gdb) next
17     return 0;
(gdb) next
18    }
(gdb) next


[[email protected]]$gdbserver 10.27.10.48:9000 ./test 
Process ./test created; pid = 746 
Listening on port 9000 
Remote debugging from host 10.27.10.48 
 3 3 
 4 7 
 5 12 
 5 6

set solib-absolute-prefix /nfsroot/rootfs
set solib-search-path /nfsroot/rootfs/lib

directory xfer-1.0.0/src/

(gdb) set solib-absolute-prefix /home/kernel/fs/root_nfs
(gdb) set solib-search-path /home/kernel/fs/root_nfs/lib
(gdb) target remote 10.27.10.23:9000
Remote debugging using 10.27.10.23:9000
Reading symbols from /home/kernel/fs/root_nfs/lib/ld-linux.so.3...(no debugging symbols 

found)...done.
Loaded symbols for /home/kernel/fs/root_nfs/lib/ld-linux.so.3
0x400007b0 in ?? () from /home/kernel/fs/root_nfs/lib/ld-linux.so.3
(gdb) l
3    {
4     int i=2;
5     int x, y;
6     
7     x=(++i);
8     printf(" %d %d\n", i,x);
9     x+=(++i);
10     printf(" %d %d\n", i,x);
11     x+=(++i);
12     printf(" %d %d\n", i,x);
(gdb) l
13     i=2;
14     y=(i++)+(i++)+(i++);
15     printf(" %d %d\n", i,y);
16     
17     return 0;
18    }
19     
(gdb) b 8
Note: breakpoint 1 also set at pc 0x83a8.
Breakpoint 2 at 0x83a8: file test.c, line 8.
(gdb) c
Continuing.

Breakpoint 1, main () at test.c:8
8     printf(" %d %d\n", i,x);
(gdb) n
9     x+=(++i);
(gdb) b 12
Breakpoint 3 at 0x8400: file test.c, line 12.
(gdb) n
10     printf(" %d %d\n", i,x);
(gdb) n
11     x+=(++i);
(gdb) n

Breakpoint 3, main () at test.c:12
12     printf(" %d %d\n", i,x);
(gdb) n
13     i=2;
(gdb) n
14     y=(i++)+(i++)+