gdb-disassemble

最新推荐文章于 2024-02-27 18:03:27 发布

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#function #debugging #command #linux #gcc #c

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本文介绍了使用GDB进行程序调试的方法，包括如何加载符号表、查看函数的汇编代码及内存中的字符串等内容。通过具体示例展示了如何利用GDB进行深入的程序分析。

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moss@moss-PC:~$ cd Linux_Programming/ moss@moss-PC:~/Linux_Programming$ gcc -o test test.c moss@moss-PC:~/Linux_Programming$ gdb ./test GNU gdb (GDB) 7.2-ubuntu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later 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 "i686-linux-gnu". For bug reporting instructions, please see: ... Reading symbols from /home/moss/Linux_Programming/test...(no debugging symbols found)...done. (gdb) disassemble main Dump of assembler code for function main: 0x08048459 <+0>: push %ebp 0x0804845a <+1>: mov %esp,%ebp 0x0804845c <+3>: and $0xfffffff0,%esp 0x0804845f <+6>: sub $0x10,%esp 0x08048462 <+9>: movl $0x8048552,0x4(%esp) 0x0804846a <+17>: movl $0x7b,(%esp) 0x08048471 <+24>: call 0x8048414 0x08048476 <+29>: leave 0x08048477 <+30>: ret End of assembler dump. (gdb) x/s 0x08048471 0x8048471 : "/350/236/377/377/377/311Ð/220/220/220/220/220/220/220U/211/345]Ít&" (gdb) x/s 0x08048476 0x8048476 : "/311Ð/220/220/220/220/220/220/220U/211/345]Ít&" (gdb) x/s 0x0804846a 0x804846a : "/307/004${" (gdb) x/s 0x08048462 0x8048462 : "/307D$/004R/205/004/b/307/004${" (gdb) x/s 0x8048552 0x8048552: "yaho!" (gdb) 0x8048558 <__FRAME_END__>: "" (gdb) diassemble function Undefined command: "diassemble". Try "help". (gdb) disassemble function Dump of assembler code for function function: 0x08048414 <+0>: push %ebp 0x08048415 <+1>: mov %esp,%ebp 0x08048417 <+3>: sub $0x48,%esp 0x0804841a <+6>: mov 0xc(%ebp),%eax 0x0804841d <+9>: mov %eax,-0x2c(%ebp) 0x08048420 <+12>: mov %gs:0x14,%eax 0x08048426 <+18>: mov %eax,-0xc(%ebp) 0x08048429 <+21>: xor %eax,%eax 0x0804842b <+23>: mov $0x8048540,%eax 0x08048430 <+28>: mov -0x2c(%ebp),%edx 0x08048433 <+31>: mov %edx,0x8(%esp) 0x08048437 <+35>: mov 0x8(%ebp),%edx 0x0804843a <+38>: mov %edx,0x4(%esp) 0x0804843e <+42>: mov %eax,(%esp) 0x08048441 <+45>: call 0x8048338 0x08048446 <+50>: mov -0xc(%ebp),%edx 0x08048449 <+53>: xor %gs:0x14,%edx 0x08048450 <+60>: je 0x8048457 0x08048452 <+62>: call 0x8048348 <__stack_chk_fail@plt> 0x08048457 <+67>: leave 0x08048458 <+68>: ret End of assembler dump. (gdb)