gdb无法加载源文件? [英] gdb can not load source file?
问题描述
- 我只用
arm-linux-gcc
在主机(debian i386)上用编译一个简单的c文件 - 然后将
a.out
文件复制到目标计算机(arm,uclibc)中。 - 运行
a.out
即可。 - 使用gdb(terget)
gdb a.out
并列出源代码,它表示没有这样的文件或目录
。
事实一直如此? - 如果我将
1.c
文件复制到目标中,那么list
命令列出源代码。
我的问题:
gdb总是如此,或者我可以控制其他选项吗?
你有任何建议来调试程序吗?
我为我可怜的英语感到抱歉
有些信息可能有用:
源代码1.c文件:
#include #include< string.h>
#include< stdlib.h>
//主函数
int main(void)
{
int i; (i = 0; i <3; i ++){
printf(i =%d \ n,i)的
。
}
返回0;
交叉编译版本(主机)
zodiac1111 @ debian:tmp $ arm-linux-gcc -v
使用内置规格。
目标:arm-unknown-linux-uclibcgnueabi
配置为:/home/ldsh/rt9x5/linux/buildroot/buildroot/output/toolchain/gcc-4.3.5/configure \
--prefix = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr --build = i686-pc-linux-gnu --host = i686-pc-linux-gnu \
--target = arm- unknown-linux-uclibcgnueabi --enable-languages = c,c ++ \
--with-sysroot = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr / arm-unknown-linux-uclibcgnueabi / sysroot \
--with-build-time-tools = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr / arm-unknown-linux-uclibcgnueabi / bin \
--disable -__ cxa_atexit --enable -target-optspace --disable-libgomp --with-gnu-ld --disable-libssp \
--disable-multilib --disable-tls --enable-shared --with-gmp = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr \
--with-mpfr = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr --enable-threads --disable-decimal-float \
--with-float = soft --with-abi = aapcs-linux --with-arch = armv5te --with-tune = arm926ej-s \
--with-pkgversion ='Buildroot 2011.05-dirty'\
--with-bugurl = http://bugs.buildroot.net/ :(重新配置)/ home / ldsh / rt9x5 / linux / buildroot / buildroot / output / toolchain / gcc-4.3.5 / configure \
--prefix = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr --build = i686-pc-linux-gnu --host = i686-pc-linux- gnu \
--target = arm-unknown-linux-uclibcgnueabi --enable-languages = c,c ++ \
--with-sysroot = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr / arm-unknown-linux-uclibcgnueabi / sysroot \
--with-build-time-tools = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr / arm-unknown-linux-uclibcgnueabi / bin \\ \\
--disable -__ cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld --disable-libssp \
--disable-multilib --disable-tls --enable-shared --with-gmp = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr \
--with-mpfr = / opt / rt9x5 / arm-linux-uclibcgnueabi / usr --enable -threads --disable-decimal-float \
--with-float = soft --with-abi = aapcs-linux --with-arch = armv5te --with-tune = arm9 26ej-s \
--with-pkgversion ='Buildroot 2011.05-dirty'--with-bugurl = http://bugs.buildroot.net/
线程模型:posix
gcc版本4.3.5(Buildroot 2011.05-dirty)
编译命令:
arm-linux-gcc -g 1.c
主机:
$ b
zodiac1111 @ debian:tmp $ uname -a
Linux Debian 3.12-1-686-pae#1 SMP Debian 3.12.9-1(2014-02-01)i686 GNU / Linux
target:
$ b # uname -a
Linux AT91SAM9-RT9x5 2.6.39#25 Mon Dec 30 17:40:40 CST 2013 armv5tejl GNU / Linux
复制到目标后,然后:
$ b
#ls -l
total 1
-rwxr - r-- 1 ftp 83 6094 Feb 21 15:19 a.out
执行正常
#./a.out
i = 0
i = 1
i = 2
目标gdb版本
#gdb -v
dlopen在'libthread_db.so.1'上失败 - 未找到文件
GDB将无法调试pthread。
GNU gdb 6.8
版权所有(C)2008 Free Software Foundation,Inc.
许可证GPLv3 +:GNU GPL版本3或更高版本< http://gnu.org/licenses /gpl.html>
这是免费软件:您可以自由更改和重新分配它。
在法律允许的范围内,不存在任何担保。有关详细信息,请键入显示复制
和显示保修。
这个GDB被配置为arm-unknown-linux-uclibcgnueabi。
debug a.out
#gdb a.out
< ...>
(gdb)列表
1 1.c:没有这样的文件或目录。
in 1.c
(gdb)break main
在0x847c处的断点1:file 1.c,line 8.
(gdb)run
启动程序:/ data / a.out
断点1,main()在1.c:8
8中1.c
(gdb)步骤
9合1。 c
(gdb)pi
$ 1 = 0
(gdb)step
i = 0
8 in 1.c
(gdb)pi
$ g $ b $ g $ b $ g $ b $ g $ b $ g
$ g $ b $ g $ b $ g $ b $ g $ b $ g $ b code>
如果我将源代码文件1.c复制到同一个目录中
#ls -l
-rw-r - r-- 1 ftp 83 158 Feb 21 15:51 1.c
-rwxr - r-- 1 ftp 83 6094 Feb 21 15:19 a.out
gdb可以列出源代码。
#gdb a.out
< >
(gdb)列表
警告:源文件比可执行文件更新。
1 #include< stdio.h>
2 #include< string.h>
3 #include< stdlib.h>
4 //主函数
5 int main(void)
6 {
7 int i; (i = 0; i <3; i ++){
9 printf(i =%d \ n,i)的
8。
10}
(gdb)
在主机平台上,在主机平台上使用 gcc -g 1.c
编译p>
- 。
- 比重命名或移除
1.c
文件 li> - 使用
gdb a.out
zodiac1111 @ debian:tmp $ gdb -v
GNU gdb(GDB)7.6.2 (Debian 7.6.2-1)
版权所有(C)2013自由软件基金会,Inc.
许可证GPLv3 +:GNU GPL版本3或更高版本< http://gnu.org/licenses/gpl。 HTML>
这是免费软件:您可以自由更改和重新分配它。
在法律允许的范围内,不存在任何担保。有关详细信息,请键入显示复制
和显示保修。
这个GDB被配置为i486-linux-gnu。
有关错误报告的说明,请参阅:
< http://www.gnu.org/software/gdb/bugs/> ;.
zodiac1111 @ debian:tmp $ gcc -v
使用内置规格。
COLLECT_GCC = gcc
COLLECT_LTO_WRAPPER = / usr / lib / gcc / i486-linux-gnu / 4.8 / lto-wrapper
目标:i486-linux-gnu
配置为:。 ./src/configure -v --with-pkgversion ='Debian 4.8.2-14'--with-bugurl = file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages = c,c ++,java,go,d,fortran,objc,obj-c ++ --prefix = / usr --program-suffix = -4.8 --enable-shared --enable-linker-build-id --libexecdir = / usr / lib --without-included-gettext --enable-threads = posix --with-gxx-include-dir = / usr / include / c ++ / 4.8 --libdir = / usr / lib --enable-nls - -with-sysroot = / --enable-clocale = gnu --enable-libstdcxx -debug -enable -libstdcxx -time = yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin - with-system-zlib --disable-browser-plugin --enable-java-awt = gtk --enable-gtk-cairo --with-java-home = / usr / lib / jvm / java-1.5.0-gcj -4.8-i386 / jre --enable-java-home --with-jvm-root-dir = / usr / lib / jvm / java-1.5.0 -gcj-4.8 -i386 --with-jvm-jar-dir = / usr / lib / jvm-exports / java-1.5.0 -gcj-4.8-i386 --with-arch-directory = i386 --with-ecj-jar = / usr / share / java / eclipse-ecj.jar --enable-objc -gc --enable-targets = all --enable -multiarch --with-arch-32 = i586 - with-multilib-list = m32,m64,mx32 --with-tune = generic --enable-checking = release --build = i486-linux-gnu --host = i486-linux-gnu --target = i486-linux -gnu
线程模型:posix
gcc版本4.8.2(Debian 4.8.2-14)
仔细阅读 有关GDB的文档 源代码路径。你想使用 dir
命令
另外,切换到一个更新的gdb(编译 gdb
来源代码)。目前的版本是7.7(所以6.8真的很老)
- I just use
arm-linux-gcc
compile a simple c file at host(debian i386) with-g
. - Then copy the
a.out
file to the target(arm,uclibc) computer. - Run the
a.out
is just ok. - Use gdb(terget)
gdb a.out
and list the source code,it saysNo such file or directory
. The fact has always been so? - If I copy the
1.c
file to the target ,thenlist
command is list the source code.
My Question:
gdb has always been so, or there are other options I can control ?
Do you have any suggestions to debug program ?
I'm sorry for my poor English
Some information maybe useful:
source code 1.c file:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
// main function
int main(void)
{
int i;
for(i=0;i<3;i++){
printf("i=%d\n",i);
}
return 0;
}
cross compile version(host)
zodiac1111@debian:tmp$ arm-linux-gcc -v
Using built-in specs.
Target:arm-unknown-linux-uclibcgnueabi
Configured with:/home/ldsh/rt9x5/linux/buildroot/buildroot/output/toolchain/gcc-4.3.5/configure \
--prefix=/opt/rt9x5/arm-linux-uclibcgnueabi/usr --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu \
--target=arm-unknown-linux-uclibcgnueabi --enable-languages=c,c++ \
--with-sysroot=/opt/rt9x5/arm-linux-uclibcgnueabi/usr/arm-unknown-linux-uclibcgnueabi/sysroot \
--with-build-time-tools=/opt/rt9x5/arm-linux-uclibcgnueabi/usr/arm-unknown-linux-uclibcgnueabi/bin \
--disable-__cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld --disable-libssp \
--disable-multilib --disable-tls --enable-shared --with-gmp=/opt/rt9x5/arm-linux-uclibcgnueabi/usr \
--with-mpfr=/opt/rt9x5/arm-linux-uclibcgnueabi/usr --enable-threads --disable-decimal-float \
--with-float=soft --with-abi=aapcs-linux --with-arch=armv5te --with-tune=arm926ej-s \
--with-pkgversion='Buildroot 2011.05-dirty' \
--with-bugurl=http://bugs.buildroot.net/ : (reconfigured) /home/ldsh/rt9x5/linux/buildroot/buildroot/output/toolchain/gcc-4.3.5/configure \
--prefix=/opt/rt9x5/arm-linux-uclibcgnueabi/usr --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu \
--target=arm-unknown-linux-uclibcgnueabi --enable-languages=c,c++ \
--with-sysroot=/opt/rt9x5/arm-linux-uclibcgnueabi/usr/arm-unknown-linux-uclibcgnueabi/sysroot \
--with-build-time-tools=/opt/rt9x5/arm-linux-uclibcgnueabi/usr/arm-unknown-linux-uclibcgnueabi/bin \
--disable-__cxa_atexit --enable-target-optspace --disable-libgomp --with-gnu-ld --disable-libssp \
--disable-multilib --disable-tls --enable-shared --with-gmp=/opt/rt9x5/arm-linux-uclibcgnueabi/usr \
--with-mpfr=/opt/rt9x5/arm-linux-uclibcgnueabi/usr --enable-threads --disable-decimal-float \
--with-float=soft --with-abi=aapcs-linux --with-arch=armv5te --with-tune=arm926ej-s \
--with-pkgversion='Buildroot 2011.05-dirty' --with-bugurl=http://bugs.buildroot.net/
Thread model:posix
gcc version 4.3.5 (Buildroot 2011.05-dirty)
compile command:
arm-linux-gcc -g 1.c
host:
zodiac1111@debian:tmp$ uname -a
Linux debian 3.12-1-686-pae #1 SMP Debian 3.12.9-1 (2014-02-01) i686 GNU/Linux
target:
# uname -a
Linux AT91SAM9-RT9x5 2.6.39 #25 Mon Dec 30 17:40:40 CST 2013 armv5tejl GNU/Linux
after copy to the target,then:
# ls -l
total 1
-rwxr--r-- 1 ftp 83 6094 Feb 21 15:19 a.out
execute is ok
# ./a.out
i=0
i=1
i=2
the target gdb version
# gdb -v
dlopen failed on 'libthread_db.so.1' - File not found
GDB will not be able to debug pthreads.
GNU gdb 6.8
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 "arm-unknown-linux-uclibcgnueabi".
debug a.out
# gdb a.out
<...>
(gdb) list
1 1.c: No such file or directory.
in 1.c
(gdb) break main
Breakpoint 1 at 0x847c: file 1.c, line 8.
(gdb) run
Starting program: /data/a.out
Breakpoint 1, main () at 1.c:8
8 in 1.c
(gdb) step
9 in 1.c
(gdb) p i
$1 = 0
(gdb) step
i=0
8 in 1.c
(gdb) p i
$2 = 0
(gdb) step
9 in 1.c
(gdb) p i
$3 = 1
(gdb)
if I copy the source code file 1.c into the same directory
# ls -l
-rw-r--r-- 1 ftp 83 158 Feb 21 15:51 1.c
-rwxr--r-- 1 ftp 83 6094 Feb 21 15:19 a.out
gdb could list the source code now.
# gdb a.out
<...>
(gdb) list
warning: Source file is more recent than executable.
1 #include <stdio.h>
2 #include <string.h>
3 #include <stdlib.h>
4 // main function
5 int main(void)
6 {
7 int i;
8 for(i=0;i<3;i++){
9 printf("i=%d\n",i);
10 }
(gdb)
At host Platform,if I
- compile with
gcc -g 1.c
at host platform. - than rename or remove the
1.c
file. - Use
gdb a.out
The same situation occurs.
zodiac1111@debian:tmp$ gdb -v
GNU gdb (GDB) 7.6.2 (Debian 7.6.2-1)
Copyright (C) 2013 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 "i486-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
zodiac1111@debian:tmp$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/i486-linux-gnu/4.8/lto-wrapper
Target: i486-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.8.2-14' --with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.8 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-i386/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-i386 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-i386 --with-arch-directory=i386 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-targets=all --enable-multiarch --with-arch-32=i586 --with-multilib-list=m32,m64,mx32 --with-tune=generic --enable-checking=release --build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.8.2 (Debian 4.8.2-14)
Read carefully the documentation of GDB notably about source path. You want to use the dir
command
Also, switch to a newer gdb (perhaps by compiling gdb
from its source code). Current version is 7.7 (so 6.8 is really old)
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