求助:gdb调试问题

冷若尘

常见的被gdb调试的文件与源文件名是相同的,比如可以通过gcc命令方式将源文件test.c生成目标文件test.o,然后采用gdb test命令方式调试.
可是我这里数个后缀为.c的文件,通过makefile文件生成了一个新的可执行文件3dma_lnx,且3dma_lnx文件与所有的源文件名都不同,我用gdb 3dma_lnx命令进行调试时,出现如下状况:
[root@localhost src]# gdb 3dma_lnx
GNU gdb Red Hat Linux (5.3post-0.20021129.18rh)
Copyright 2003 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 "i386-redhat-linux-gnu"...
(gdb) break 10
Breakpoint 1 at 0x8049ef8: file ../sysdeps/i386/elf/start.S, line 10.
(gdb) run
Starting program: /home/zsk/3dma_rock/bin/3dma_lnx

Breakpoint 1,
Current language: auto; currently asm
(gdb) step
52 ../sysdeps/i386/elf/start.S: 没有那个文件或目录.
in ../sysdeps/i386/elf/start.S
(gdb) step
53 in ../sysdeps/i386/elf/start.S
(gdb) step
59 in ../sysdeps/i386/elf/start.S
(gdb) step
60 in ../sysdeps/i386/elf/start.S
(gdb) step
65 in ../sysdeps/i386/elf/start.S
(gdb) step
67 in ../sysdeps/i386/elf/start.S
(gdb) step
71 in ../sysdeps/i386/elf/start.S
(gdb) step
72 in ../sysdeps/i386/elf/start.S
(gdb) step
74 in ../sysdeps/i386/elf/start.S
(gdb) step
75 in ../sysdeps/i386/elf/start.S
(gdb) step
77 in ../sysdeps/i386/elf/start.S
(gdb) step
81 in ../sysdeps/i386/elf/start.S
(gdb) step
****************************************************
Run Stamp start time Wed Oct 20 22:35:34 2004
machine name localhost.localdomain
operating system Linux
****************************************************

****************************************************
Run Stamp start time Wed Oct 20 22:35:34 2004
machine name localhost.localdomain
operating system Linux
****************************************************

Input Data Options
tomographic data (1)
segmented data (2)
burn data (3)
medial axis data (4)
throat data (5)
pore-throat network data (6)
fluid data (7)
Enter choice: q


Data Processing Options
Input Data Options
tomographic data (1)
segmented data (2)
burn data (3)
medial axis data (4)
throat data (5)
pore-throat network data (6)
fluid data (7)
Enter choice: 135761552

Data Processing Options

Program received signal SIGSEGV, Segmentation fault.
0x0804a133 in main_menu_driver_file ()
(gdb) break 100
No line 100 in file "../sysdeps/i386/elf/start.S".
(gdb)

郁闷,我应该如何调试啊?

mozilla

跑到系统库里啦
用next
另外调试是不需要源码的，只要你在编译时加上-g参数，源码就被包含到程序或者库里了。
gdb xxx.o有什么用吗？

kakuyou

编译时加上-g参数生成调试用的符号且把源文件也加入到生成程序中去。

使用例如break xxx.c:10 这样的方法来设置断点在xxx.c文件的第10行。

冷若尘

谢谢mozilla，kakuyou二位，我已经按照你们的提示重新编译了一下，但是好像问题依旧啊，既不能用list显示，也不能“使用例如break xxx.c:10 这样的方法来设置断点在xxx.c文件的第10行。”怎么办？

mozilla

makefile的DBX=-ggdb