反汇编之C for 循环

#include

int main()
{
int a;

for (a = 0; a < 10; a++)
printf("The for loop.n");

return 0;
}

#if 0

0000000000001149

:
    1149:   f3 0f 1e fa             endbr64
    114d:   55                      push   %rbp
    114e:   48 89 e5                mov    %rsp,%rbp
    1151:   48 83 ec 10             sub    $0x10,%rsp
    1155:   c7 45 fc 00 00 00 00    movl   $0x0,-0x4(%rbp)   // (rbp-0x4)=0x0

    115c:   eb 10                   jmp    116e
    115e:   48 8d 3d 9f 0e 00 00    lea    0xe9f(%rip),%rdi        # 2004 <_IO_stdin_used+0x4>
    1165:   e8 e6 fe ff ff          callq 1050    // puts()
    116a:   83 45 fc 01             addl   $0x1,-0x4(%rbp)   // (rbp-0x4)+=0x1
    116e:   83 7d fc 09             cmpl   $0x9,-0x4(%rbp)   // (rbp-0x4)-0x9
    1172:   7e ea                   jle    115e    // 小于等于(有符号<=)

    1174:   b8 00 00 00 00          mov    $0x0,%eax
    1179:   c9                      leaveq
    117a:   c3                      retq
    117b:   0f 1f 44 00 00          nopl   0x0(%rax,%rax,1)

000000000040055c

:
40055c:   a9be7bfd    stp   x29, x30, [sp, #-32]!
400560:   910003fd    mov   x29, sp
400564:   b9001fbf    str   wzr, [x29, #28]       // [x29+28]=0

400568:   14000007    b   400584
40056c:   90000000    adrp   x0, 400000 <_init-0x3e8>
400570:   91194000    add   x0, x0, #0x650
400574:   97ffffb7    bl   400450    // puts()
400578:   b9401fa0    ldr   w0, [x29, #28]   // w0=[x29+28]
40057c:   11000400    add   w0, w0, #0x1   // w0=w0+0x1
400580:   b9001fa0    str   w0, [x29, #28]   // [x29+28]=w0
400584:   b9401fa0    ldr   w0, [x29, #28]   // w0=[x29+28]
400588:   7100241f    cmp   w0, #0x9   // w0-0x9
40058c:   54ffff0d    b.le   40056c

400590:   52800000    mov   w0, #0x0                      // #0
400594:   a8c27bfd    ldp   x29, x30, [sp], #32
400598:   d65f03c0    ret
40059c:   00000000    .inst   0x00000000 ; undefined

#endif

反汇编 之C for 循环

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反汇编之C for 循环