(gdb)symbol-file#删除符号表 Discard symbol table from `/home/ubuntu/Desktop/u-boot-2017.05-rc2/u-boot'?(y or n)y Errorinre-setting breakpoint1: No symbol table is loaded. Use the"file"command. No symbolfilenow. (gdb)add-symbol-file u-boot 0x6ff7d000#重新添加符号表 addsymbol table...
Discard symbol table from `/home/ubuntu/Desktop/u-boot-2017.05-rc2/u-boot'? (y or n) y Error in re-setting breakpoint 1: No symbol table is loaded. Use the "file" command. No symbol file now. (gdb) add-symbol-file u-boot 0x6ff7d000 #重新添加符号表 add symbol table from file ...
、 我喜欢让GDB在变量等于我设置的某个值时设置一个断点,我试过这个例子: #include <stdio.h> main() { int i = 0; for(i=0;i<7;++i) printf("%d\n", i); return 0; } GDB的输出: (gdb) break if ((int)i == 5) No default breakpoint address now. (gdb) run Starting program: /...
1、-symbols file -s file 从file文件中读取符号表symbol table 2、-exec file -e file 指定可执行文件file 3、-se file 从file中读取符号表并把file作为可执行文件 4、-core file -c file 指定core dump文件file 5、-pid number -p number 将gdb attach到进程pid 6、-command file -x file 从file文件...
No symbol table is loaded. Use the"file"command. 可以看到,对于找不到目标程序文件的 GDB 调试器,l 指令的执行结果显示“无法加载符号表”。这种情况下,我们就必须手动为其指定要调试的目标程序,例如: (gdb) file /tmp/demo/main.exe Reading symbols from /tmp/demo/main.exe... ...
Breakpoint 1 at 0x8048496: file tst.c, line 16. (gdb) break func <---设置断点,在函数func()入口处。 Breakpoint 2 at 0x8048456: file tst.c, line 5. (gdb) info break <---查看断点信息。 Num Type Disp Enb Address What 1 breakpoint keep ...
1 main.c: No such file or directory. (gdb) 它就会提示找不到源码文件了,那么怎么办呢? 我们可以使用dir命名指定源码路径,例如: (gdb) dir ./temp Source directories searched: /home/hyb/workspaces/gdb/sourceCode/./temp:$cdir:$cwd 这个时候它就能找到源码路径了。我这里使用的是相对路径,保险起见,你...
No symbol "varible" in current context 3.10 修改变量值 在调试程序时,你可能想改变一个变量的值,看看在这种情况下会发生什么。用set指令可以修改变量的值: set varible=value 例如你想将一个变量tmp的值赋为10, set tmp=10 3.11 检查内存值 检查内存值的指令是x,x是examine的意思。用法如下: ...
When set to off no messages are printed. show print symbol-loading Show whether messages will be printed when a GDB command entered from the keyboard causes symbol information to be loaded. maint print symbols [-pc address ] [ filename ] maint print symbols [-objfile objfile ] [-...
No symbol table info available. #7 0x00000033834e68ed in clone () from /lib64/libc.so.6 一般来说bt full没什么用,但是可以看到一些局部变量的值,但是有些值不可靠,我们还不能准确的定位 (gdb) info threads 16 Thread 0x2b3151cb7100 (LWP 18310) 0x0000003383c0b44c in pthread_cond_wait@@GLIBC...