(gdb) disassemble _start
Dump of assembler code for function format:
0x0000000000400240 <+0>: and $0x52510073,%eax
0x0000000000400245 <+5>: movabs $0x400240,%rdx
0x000000000040024f <+15>: movabs $0x6003e0,%rcx
0x0000000000400259 <+25>: sub $0x20,%rsp
0x000000000040025d <+29>: callq 0x400230 <printf@plt>
0x0000000000400262 <+34>: add $0x20,%rsp
0x0000000000400266 <+38>: pop %rdx
0x0000000000400267 <+39>: pop %rcx
0x0000000000400268 <+40>: retq
End of assembler dump.
(gdb) Quit
(gdb) b *0x000000000040025d
Breakpoint 1 at 0x40025d
(gdb) s
The program is not being run.
(gdb) r
Starting program: /home/eriri/nasm/hello.exe
/bin/bash: /home/eriri/nasm/hello.exe: 沒有此一檔案或目錄
During startup program exited with code 127.