user: 下面的汇编指令对应的C源代码是什么：

```asm
<test_dec>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    $0x812fada,%esi
  mov    $0x12345678,%edi
  call   <exec_dec@plt>
  mov    $0x12341,%esi
  mov    $0x12341,%edi
  call   <exec_dec@plt>
  mov    $0xfffedcbf,%esi
  mov    $0x12341,%edi
  call   <exec_dec@plt>
  mov    $0x0,%esi
  mov    $0xffffffff,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0xffffffff,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0xffffffff,%edi
  call   <exec_dec@plt>
  mov    $0x2,%esi
  mov    $0xffffffff,%edi
  call   <exec_dec@plt>
  mov    $0x0,%esi
  mov    $0x7fffffff,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0x7fffffff,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0x7fffffff,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0x80000000,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0x80000000,%edi
  call   <exec_dec@plt>
  mov    $0xfffffffe,%esi
  mov    $0x80000000,%edi
  call   <exec_dec@plt>
  mov    $0x0,%esi
  mov    $0x12347fff,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0x12347fff,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0x12347fff,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0x12348000,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0x12348000,%edi
  call   <exec_dec@plt>
  mov    $0xfffffffe,%esi
  mov    $0x12348000,%edi
  call   <exec_dec@plt>
  mov    $0x0,%esi
  mov    $0x12347f7f,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0x12347f7f,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0x12347f7f,%edi
  call   <exec_dec@plt>
  mov    $0xffffffff,%esi
  mov    $0x12348080,%edi
  call   <exec_dec@plt>
  mov    $0x1,%esi
  mov    $0x12348080,%edi
  call   <exec_dec@plt>
  mov    $0xfffffffe,%esi
  mov    $0x12348080,%edi
  call   <exec_dec@plt>
  movl   $0x0,-0x8(%rbp)
  jmp    L8
L19:
  movl   $0x0,-0x4(%rbp)
  jmp    L25
L6:
  mov    -0x4(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  lea    D16(%rip),%rax
  mov    (%rdx,%rax,1),%edx
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  lea    D16(%rip),%rax
  mov    (%rcx,%rax,1),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <exec_dec@plt>
  addl   $0x1,-0x4(%rbp)
L25:
  cmpl   $0x38,-0x4(%rbp)
  jle    L6
  addl   $0x1,-0x8(%rbp)
L8:
  cmpl   $0x38,-0x8(%rbp)
  jle    L19
  nop
  nop
  leave
  ret
```

assistant: ```c
void test_dec(void) {
  int i, j;
  static unsigned int val[57] = {0x00, 0x01, 0x02, 0x03, 0x3F, 0x40, 0x41, 0x7E, 0x7F, 0x80, 0x81, 0x82, 0xBF, 0xC0, 0xC1, 0xFC, 0xFD, 0xFE, 0xFF, 0xFF00, 0xFF01, 0xFF02, 0xFF03, 0xFF3F, 0xFF40, 0xFF41, 0xFF7E, 0xFF7F, 0xFF80, 0xFF81, 0xFF82, 0xFFBF, 0xFFC0, 0xFFC1, 0xFFFC, 0xFFFD, 0xFFFE, 0xFFFF, 0xFFFFFF00, 0xFFFFFF01, 0xFFFFFF02, 0xFFFFFF03, 0xFFFFFF3F, 0xFFFFFF40, 0xFFFFFF41, 0xFFFFFF7E, 0xFFFFFF7F, 0xFFFFFF80, 0xFFFFFF81, 0xFFFFFF82, 0xFFFFFFBF, 0xFFFFFFC0, 0xFFFFFFC1, 0xFFFFFFFC, 0xFFFFFFFD, 0xFFFFFFFE, 0xFFFFFFFF};
  exec_dec(0x12345678, 0x812FADA);
  exec_dec(0x12341, 0x12341);
  exec_dec(0x12341, -0x12341);
  exec_dec(0xffffffff, 0);
  exec_dec(0xffffffff, -1);
  exec_dec(0xffffffff, 1);
  exec_dec(0xffffffff, 2);
  exec_dec(0x7fffffff, 0);
  exec_dec(0x7fffffff, 1);
  exec_dec(0x7fffffff, -1);
  exec_dec(0x80000000, -1);
  exec_dec(0x80000000, 1);
  exec_dec(0x80000000, -2);
  exec_dec(0x12347fff, 0);
  exec_dec(0x12347fff, 1);
  exec_dec(0x12347fff, -1);
  exec_dec(0x12348000, -1);
  exec_dec(0x12348000, 1);
  exec_dec(0x12348000, -2);
  exec_dec(0x12347f7f, 0);
  exec_dec(0x12347f7f, 1);
  exec_dec(0x12347f7f, -1);
  exec_dec(0x12348080, -1);
  exec_dec(0x12348080, 1);
  exec_dec(0x12348080, -2);
  if (1)
    for (i = 0; i < 57; i++)
      for (j = 0; j < 57; j++)
        exec_dec(val[i], val[j]);
}
```