自動反彙編後面要執行的代碼

例子

(gdb) set disassemble-next-line on
(gdb) start 
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Temporary breakpoint 3 at 0x400543: file 1.c, line 14.
Starting program: /home/teawater/tmp/a.out 

Temporary breakpoint 3, main (argc=1, argv=0x7fffffffdf38, envp=0x7fffffffdf48) at 1.c:14
14      printf("1\n");
=> 0x0000000000400543 <main+19>:    bf f0 05 40 00  mov    $0x4005f0,%edi
   0x0000000000400548 <main+24>:    e8 c3 fe ff ff  callq  0x400410 <puts@plt>
(gdb) si
0x0000000000400548  14      printf("1\n");
0x0000000000400543 <main+19>:    bf f0 05 40 00  mov    $0x4005f0,%edi
=> 0x0000000000400548 <main+24>:    e8 c3 fe ff ff  callq  0x400410 <puts@plt>
(gdb) 
0x0000000000400410 in puts@plt ()
=> 0x0000000000400410 <puts@plt+0>: ff 25 02 0c 20 00   jmpq   *0x200c02(%rip)        # 0x601018 <puts@got.plt>

(gdb) set disassemble-next-line auto 
(gdb) start 
Temporary breakpoint 1 at 0x400543: file 1.c, line 14.
Starting program: /home/teawater/tmp/a.out 

Temporary breakpoint 1, main (argc=1, argv=0x7fffffffdf38, envp=0x7fffffffdf48) at 1.c:14
14      printf("1\n");
(gdb) si
0x0000000000400548  14      printf("1\n");
(gdb) 
0x0000000000400410 in puts@plt ()
=> 0x0000000000400410 <puts@plt+0>: ff 25 02 0c 20 00   jmpq   *0x200c02(%rip)        # 0x601018 <puts@got.plt>
(gdb) 
0x0000000000400416 in puts@plt ()
=> 0x0000000000400416 <puts@plt+6>: 68 00 00 00 00  pushq  $0x0

技巧

如果要在任意情況下反彙編後面要執行的代碼：

(gdb) set disassemble-next-line on

如果要在後面的代碼沒有源碼的情況下才反彙編後面要執行的代碼：

(gdb) set disassemble-next-line auto

關閉這個功能：

(gdb) set disassemble-next-line off

貢獻者

teawater