user: 下面的汇编指令对应的C源代码是什么：

```asm
<findAllPlain>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%r12
  nopw   0x0(%rax,%rax,1)
L115:
  mov    %rbp,0x8(%rsp)
  mov    %rbp,%r13
  xor    %r14d,%r14d
  movl   $0x0,0x4(%rsp)
  nopl   0x0(%rax,%rax,1)
L25:
  xor    %ebx,%ebx
  jmp    L42
  nopl   0x0(%rax)
L35:
  add    $0x1,%rbx
  cmp    $0x9,%rbx
  je     L34
L42:
  mov    0x0(%r13,%rbx,4),%r11d
  test   %r11d,%r11d
  jne    L35
  mov    %r12,%rcx
  mov    %ebx,%edx
  mov    %r14d,%esi
  mov    %rbp,%rdi
  call   <checkspot@plt>
  cmp    $0x1,%eax
  je     L114
  jle    L35
  mov    %r12,%rcx
  mov    %ebx,%edx
  mov    %r14d,%esi
  mov    %rbp,%rdi
  call   <checkElim@plt>
  test   %eax,%eax
  js     L35
L105:
  add    $0x1,%eax
L128:
  mov    %eax,0x0(%r13,%rbx,4)
  add    $0x1,%rbx
  addl   $0x1,0x4(%rsp)
  cmp    $0x9,%rbx
  jne    L42
  nopw   0x0(%rax,%rax,1)
L34:
  add    $0x1,%r14d
  add    $0x24,%r13
  cmp    $0x9,%r14d
  jne    L25
  mov    0x4(%rsp),%eax
  test   %eax,%eax
  jne    L115
  add    $0x144,%rbp
  nopl   0x0(%rax)
L131:
  mov    0x8(%rsp),%rax
  cmpl   $0x1,(%rax)
  adcl   $0x0,0x4(%rsp)
  mov    0x4(%rsp),%edx
  cmpl   $0x1,0x4(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0x8(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0xc(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0x10(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0x14(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0x18(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0x1c(%rax)
  adc    $0x0,%edx
  cmpl   $0x1,0x20(%rax)
  adc    $0x0,%edx
  add    $0x24,%rax
  mov    %edx,0x4(%rsp)
  mov    %rax,0x8(%rsp)
  cmp    %rbp,%rax
  jne    L131
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L82
  add    $0x48,%rsp
  mov    %edx,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax,%rax,1)
L114:
  mov    0x10(%rsp),%r10d
  test   %r10d,%r10d
  jne    L128
  mov    0x14(%rsp),%r9d
  test   %r9d,%r9d
  jne    L105
  mov    0x18(%rsp),%r8d
  test   %r8d,%r8d
  jne    L66
  mov    0x1c(%rsp),%edi
  test   %edi,%edi
  jne    L136
  mov    0x20(%rsp),%esi
  test   %esi,%esi
  jne    L133
  mov    0x24(%rsp),%ecx
  test   %ecx,%ecx
  jne    L171
  mov    0x28(%rsp),%edx
  test   %edx,%edx
  jne    L53
  cmpl   $0x1,0x2c(%rsp)
  mov    $0x7,%eax
  adc    $0x0,%eax
  jmp    L105
L66:
  mov    $0x2,%eax
  jmp    L105
L136:
  mov    $0x3,%eax
  jmp    L105
L133:
  mov    $0x4,%eax
  jmp    L105
L171:
  mov    $0x5,%eax
  jmp    L105
L53:
  mov    $0x6,%eax
  jmp    L105
L82:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int findAllPlain(int x[9][9]) {
  int possible_mask[9];
  int num_possible;
  int i, j, k;
  int num_found;
  int rounds = 0;
  do {
    num_found = 0;
    for (i = 0; i < 9; i++) {
      for (j = 0; j < 9; j++) {
        if (x[i][j] != 0)
          continue;
        num_possible = checkspot(x, i, j, possible_mask);
        if (num_possible == 1) {
          for (k = 0; possible_mask[k] == 0; k++)
            ;
          x[i][j] = k + 1;
          num_found++;
        } else if (num_possible > 1) {
          k = checkElim(x, i, j, possible_mask);
          if (k >= 0) {
            x[i][j] = k + 1;
            num_found++;
          }
        }
      }
    }
    rounds++;
  } while (num_found > 0);
  int num_empty = 0;
  for (i = 0; i < 9; i++)
    for (j = 0; j < 9; j++)
      if (x[i][j] == 0)
        num_empty++;
  return num_empty;
}
```