user: 下面的汇编指令对应的C源代码是什么：

```asm
<remove_diagonals>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %edi,-0x24(%rbp)
  mov    %esi,-0x28(%rbp)
  mov    %rdx,-0x30(%rbp)
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_row@plt>
  mov    %eax,-0x1c(%rbp)
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_col@plt>
  add    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%eax
  mov    %eax,-0x18(%rbp)
  jmp    L59
L42:
  mov    -0x1c(%rbp),%eax
  add    $0x1,%eax
  cmp    %eax,-0x24(%rbp)
  jle    L135
  addl   $0x1,-0x1c(%rbp)
  mov    -0x18(%rbp),%edx
  mov    -0x1c(%rbp),%ecx
  mov    -0x24(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <calc_index@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x71,%al
  je     L135
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movb   $0x2a,(%rax)
L135:
  addl   $0x1,-0x18(%rbp)
L59:
  mov    -0x18(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L42
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_row@plt>
  mov    %eax,-0x1c(%rbp)
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_col@plt>
  sub    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%eax
  mov    %eax,-0x14(%rbp)
  jmp    L29
L77:
  mov    -0x1c(%rbp),%eax
  add    $0x1,%eax
  cmp    %eax,-0x24(%rbp)
  jle    L109
  addl   $0x1,-0x1c(%rbp)
  mov    -0x14(%rbp),%edx
  mov    -0x1c(%rbp),%ecx
  mov    -0x24(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <calc_index@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x71,%al
  je     L109
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movb   $0x2a,(%rax)
L109:
  subl   $0x1,-0x14(%rbp)
L29:
  cmpl   $0x0,-0x14(%rbp)
  jns    L77
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_row@plt>
  mov    %eax,-0x1c(%rbp)
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_col@plt>
  add    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%eax
  mov    %eax,-0x10(%rbp)
  jmp    L19
L4:
  cmpl   $0x0,-0x1c(%rbp)
  jle    L3
  subl   $0x1,-0x1c(%rbp)
  mov    -0x10(%rbp),%edx
  mov    -0x1c(%rbp),%ecx
  mov    -0x24(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <calc_index@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x71,%al
  je     L3
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movb   $0x2a,(%rax)
L3:
  addl   $0x1,-0x10(%rbp)
L19:
  mov    -0x10(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L4
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_row@plt>
  mov    %eax,-0x1c(%rbp)
  mov    -0x28(%rbp),%edx
  mov    -0x24(%rbp),%eax
  mov    %edx,%esi
  mov    %eax,%edi
  call   <calc_col@plt>
  sub    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x8(%rbp),%eax
  mov    %eax,-0xc(%rbp)
  jmp    L16
L132:
  cmpl   $0x0,-0x1c(%rbp)
  jle    L75
  subl   $0x1,-0x1c(%rbp)
  mov    -0xc(%rbp),%edx
  mov    -0x1c(%rbp),%ecx
  mov    -0x24(%rbp),%eax
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <calc_index@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  cmp    $0x71,%al
  je     L75
  mov    -0x4(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movb   $0x2a,(%rax)
L75:
  subl   $0x1,-0xc(%rbp)
L16:
  cmpl   $0x0,-0xc(%rbp)
  jns    L132
  nop
  nop
  leave
  ret
```

assistant: ```c
void remove_diagonals(int n, int index, char *board) {
  int row;
  int col_start;
  int diag;
  row = calc_row(n, index);
  col_start = calc_col(n, index) + 1;
  for (int col = col_start; col < n; col++) {
    if (row + 1 < n) {
      row += 1;
      diag = calc_index(n, row, col);
      if (board[diag] != 'q') {
        board[diag] = '*';
      }
    }
  }
  row = calc_row(n, index);
  col_start = calc_col(n, index) - 1;
  for (int col = col_start; col > -1; col--) {
    if (row + 1 < n) {
      row += 1;
      diag = calc_index(n, row, col);
      if (board[diag] != 'q') {
        board[diag] = '*';
      }
    }
  }
  row = calc_row(n, index);
  col_start = calc_col(n, index) + 1;
  for (int col = col_start; col < n; col++) {
    if (row - 1 >= 0) {
      row -= 1;
      diag = calc_index(n, row, col);
      if (board[diag] != 'q') {
        board[diag] = '*';
      }
    }
  }
  row = calc_row(n, index);
  col_start = calc_col(n, index) - 1;
  for (int col = col_start; col > -1; col--) {
    if (row - 1 >= 0) {
      row -= 1;
      diag = calc_index(n, row, col);
      if (board[diag] != 'q') {
        board[diag] = '*';
      }
    }
  }
}
```