这些之间的唯一区别是迭代次数。
下面是我的，下面是我正在阅读的书中的汇编代码。我也看过同一个hello世界的其他反汇编代码，它们与本书相同。 我的hello world似乎比其他例子有更多的命令......这些更容易理解。
我一直在使用gcc和gdb。
lubuntu@lubuntu:~/Documents/aoe$ gcc -g helloworld.c
lubuntu@lubuntu:~/Documents/aoe$ gdb -q ./a.out
Reading symbols from ./a.out...done.
warning: File "/home/lubuntu/Documents/aoe/.gdbinit" auto-loading has
been declined by your auto-load safe-path' set to
"$debugdir:$datadir/auto-load".
To enable execution of this file add
add-auto-load-safe-path /home/lubuntu/Documents/aoe/.gdbinit
line to your configuration file "/home/lubuntu/.gdbinit".
To completely disable this security protection add
set auto-load safe-path /
line to your configuration file "/home/lubuntu/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual. E.g., run from the
shell:
info "(gdb)Auto-loading safe path"
(gdb) list
1 #include <stdio.h>
2
3 int main()
4 {
5 int i;
6 for(i=0; i < 7; i++)
7 {
8 printf("Hello, world!\n");
9 }
10 return 0;
(gdb) break main
Breakpoint 1 at 0x53a: file helloworld.c, line 6.
(gdb) disass main
Dump of assembler code for function main:
0x0000051d <+0>: lea ecx,[esp+0x4]
0x00000521 <+4>: and esp,0xfffffff0
0x00000524 <+7>: push DWORD PTR [ecx-0x4]
0x00000527 <+10>: push ebp
0x00000528 <+11>: mov ebp,esp
0x0000052a <+13>: push ebx
0x0000052b <+14>: push ecx
0x0000052c <+15>: sub esp,0x10
0x0000052f <+18>: call 0x420 <__x86.get_pc_thunk.bx>
0x00000534 <+23>: add ebx,0x1aa4
0x0000053a <+29>: mov DWORD PTR [ebp-0xc],0x0
0x00000541 <+36>: jmp 0x559 <main+60>
0x00000543 <+38>: sub esp,0xc
0x00000546 <+41>: lea eax,[ebx-0x19e8]
0x0000054c <+47>: push eax
0x0000054d <+48>: call 0x3b0 <puts@plt>
0x00000552 <+53>: add esp,0x10
0x00000555 <+56>: add DWORD PTR [ebp-0xc],0x1
0x00000559 <+60>: cmp DWORD PTR [ebp-0xc],0x6
0x0000055d <+64>: jle 0x543 <main+38>
0x0000055f <+66>: mov eax,0x0
0x00000564 <+71>: lea esp,[ebp-0x8]
---Type <return> to continue, or q <return> to quit---Quit
(gdb) Quit
(gdb)`
这是一个与书籍完全相同的例子。 （我显然无法嵌入图像。） 这个有一个指针 - mov DWORD PTR [esp]，0x80484b0 我没有这个，但在我见过的所有例子中都有。
任何帮助将不胜感激。
