for循环的汇编

003A1000 >/$  55            push ebp                                            ;  1
003A1001  |.  8BEC          mov ebp,esp                                         ;  1
003A1003  |.  51            push ecx                                            ;  1
003A1004  |.  68 F4203A00   push for.003A20F4                                   ; /format = "dada"
003A1009  |.  FF15 A0203A00 call dword ptr ds:[<&MSVCR90.printf>]               ; \1
003A100F  |.  83C4 04       add esp,0x4                                         ;  这时候还0x8-0x4=0x4 1
003A1012  |.  C745 FC 01000>mov dword ptr ss:[ebp-0x4],0x1                      ;  i=1初始化 把0x1放进去 1
003A1019  |.  EB 09         jmp short for.003A1024                              ;  然后跳转到cmp那进行比较 1
003A101B  |>  8B45 FC       /mov eax,dword ptr ss:[ebp-0x4]
003A101E  |.  83C0 01       |add eax,0x1                                        ;  进行+1
003A1021  |.  8945 FC       |mov dword ptr ss:[ebp-0x4],eax
003A1024      837D FC 0A    cmp dword ptr ss:[ebp-0x4],0xA                      ;  比较eax的值10大小
003A1028      7F 14         jg short for.003A103E                               ;  这个语句是如果eax的值大于0xa就跳转到介绍的地方
003A102A      8B4D FC       mov ecx,dword ptr ss:[ebp-0x4]                      ;  把当前i的值给ecx
003A102D  |.  51            |push ecx                                           ; /<%d> = 6FD9215C (1876500828.)
003A102E  |.  68 FC203A00   |push for.003A20FC                                  ; |format = "%d,"
003A1033  |.  FF15 A0203A00 |call dword ptr ds:[<&MSVCR90.printf>]              ; \输出ecx的值
003A1039  |.  83C4 08       |add esp,0x8                                        ;  平衡堆栈
003A103C  |.^ EB DD         \jmp short for.003A101B
003A103E  |>  33C0          xor eax,eax
003A1040  |.  8BE5          mov esp,ebp
003A1042  |.  5D            pop ebp
003A1043  \.  C3            retn

/最小化优化
//00401000  /$  56            PUSH ESI
//00401001  |.  33F6          XOR ESI,ESI                              ;  i=0;
//00401003  |.  46            INC ESI                                  ;  i=1;
//00401004  |>  56            /PUSH ESI                                ; /<%d>
//00401005  |.  68 F4204000   |PUSH for.004020F4                       ; |format = "%d,"
//0040100A  |.  FF15 A0204000 |CALL DWORD PTR DS:[<&MSVCR90.printf>]   ; \printf
//00401010  |.  46            |INC ESI                                 ;  i++
//00401011  |.  83FE 0A       |CMP ESI,0A                              ;  if (i<=10) goto 401004
//00401014  |.  59            |POP ECX
//00401015  |.  59            |POP ECX
//00401016  |.^ 7E EC         \JLE SHORT for.00401004
//00401018  |.  33C0          XOR EAX,EAX
//0040101A  |.  5E            POP ESI
//0040101B  \.  C3            RETN                                     ;  33-1B

//最大化速度优化
//00401000  /$  56            PUSH ESI
//00401001  |.  57            PUSH EDI
//00401002  |.  8B3D A0204000 MOV EDI,DWORD PTR DS:[<&MSVCR90.printf>]     ;  MSVCR90.printf
//00401008  |.  BE 01000000   MOV ESI,1                                    ;  int i=1;
//0040100D  |.  8D49 00       LEA ECX,DWORD PTR DS:[ECX]                   ;  ecx=ecx
//00401010  |>  56            /PUSH ESI
//00401011  |.  68 F4204000   |PUSH for.004020F4                           ;  ASCII "%d,"
//00401016  |.  FFD7          |CALL EDI                                    ;  call dword ptr [printf]
//00401018  |.  46            |INC ESI                                     ;  i++;
//00401019  |.  83C4 08       |ADD ESP,8
//0040101C  |.  83FE 0A       |CMP ESI,0A                                  ;  0B
//0040101F  |.^ 7E EF         \JLE SHORT for.00401010                      ;  if (i<=10) 继续循环 goto 401010
//00401021  |.  5F            POP EDI
//00401022  |.  33C0          XOR EAX,EAX
//00401024  |.  5E            POP ESI
//00401025  \.  C3            RETN



#include "stdafx.h"


int _tmain(int argc, _TCHAR* argv[])
{


    printf("dada");
    for (int i=1;i<=10;i++)
     {
         printf("%d,",i);
     }



    return 0;
}


推荐阅读更多精彩内容