user: What is the c source code of the assembly code below?

```asm
<removeWalls>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,(%rsp)
  mov    %rsi,%r14
  mov    %edx,%r12d
  mov    %ecx,%r13d
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  movslq %edx,%rax
  lea    (%rax,%rax,2),%rax
  shl    $0x4,%rax
  add    %rsi,%rax
  movslq %ecx,%rdx
  movl   $0x1,(%rax,%rdx,4)
  movl   $0x0,0x10(%rsp)
  movl   $0x1,0x14(%rsp)
  movl   $0x2,0x18(%rsp)
  movl   $0x3,0x1c(%rsp)
  mov    $0x6,%ebx
  lea    0x10(%rsp),%rbp
L14:
  mov    $0x4,%esi
  mov    %rbp,%rdi
  call   <shuffle@plt>
  sub    $0x1,%ebx
  jne    L14
  lea    0x10(%rsp),%rbx
  lea    0x20(%rsp),%r15
  lea    -0x1(%r12),%eax
  mov    %eax,0x8(%rsp)
  jmp    L174
L139:
  cmpl   $0x1,0x0(%rbp)
  jne    L95
  cmp    $0x4,%r12d
  jle    L172
L95:
  cmpl   $0x2,0x0(%rbp)
  jne    L151
  test   %r13d,%r13d
  jg     L159
L151:
  cmpl   $0x3,0x0(%rbp)
  jne    L56
  cmp    $0xa,%r13d
  jle    L109
L56:
  add    $0x4,%rbx
  cmp    %r15,%rbx
  je     L152
L174:
  mov    %rbx,%rbp
  cmpl   $0x0,(%rbx)
  jne    L139
  test   %r12d,%r12d
  jle    L139
  mov    %r13d,%edx
  mov    0x8(%rsp),%esi
  mov    %r14,%rdi
  call   <squareVisited@plt>
  test   %rax,%rax
  jne    L139
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    (%rsp),%rdi
  call   <removeTopWall@plt>
  mov    %r13d,%ecx
  mov    0x8(%rsp),%edx
  mov    %r14,%rsi
  mov    (%rsp),%rdi
  call   <removeWalls>
  jmp    L139
L172:
  lea    0x1(%r12),%eax
  mov    %eax,0xc(%rsp)
  mov    %r13d,%edx
  mov    %eax,%esi
  mov    %r14,%rdi
  call   <squareVisited@plt>
  test   %rax,%rax
  jne    L95
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    (%rsp),%rdi
  call   <removeBottomWall@plt>
  mov    %r13d,%ecx
  mov    0xc(%rsp),%edx
  mov    %r14,%rsi
  mov    (%rsp),%rdi
  call   <removeWalls>
  jmp    L95
L159:
  lea    -0x1(%r13),%eax
  mov    %eax,0xc(%rsp)
  mov    %eax,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <squareVisited@plt>
  test   %rax,%rax
  jne    L151
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    (%rsp),%rdi
  call   <removeLeftWall@plt>
  mov    0xc(%rsp),%ecx
  mov    %r12d,%edx
  mov    %r14,%rsi
  mov    (%rsp),%rdi
  call   <removeWalls>
  jmp    L151
L109:
  lea    0x1(%r13),%ebp
  mov    %ebp,%edx
  mov    %r12d,%esi
  mov    %r14,%rdi
  call   <squareVisited@plt>
  test   %rax,%rax
  jne    L56
  mov    %r13d,%edx
  mov    %r12d,%esi
  mov    (%rsp),%rdi
  call   <removeRightWall@plt>
  mov    %ebp,%ecx
  mov    %r12d,%edx
  mov    %r14,%rsi
  mov    (%rsp),%rdi
  call   <removeWalls>
  jmp    L56
L152:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L106
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L106:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
void removeWalls(int (*maze)[25], int (*visited)[25 / 2], int startRow, int startCol) {
  visited[startRow][startCol] = 1;
  int i;
  int order[4] = {0, 1, 2, 3};
  for (i = 0; i < 6; i++)
    shuffle(order, 4);
  for (i = 0; i < 4; i++) {
    if (order[i] == 0) {
      if (startRow > 0 && (squareVisited(visited, startRow - 1, startCol) == 0)) {
        removeTopWall(maze, startRow, startCol);
        removeWalls(maze, visited, startRow - 1, startCol);
      }
    }
    if (order[i] == 1) {
      if ((startRow < (13 / 2) - 1) && (squareVisited(visited, startRow + 1, startCol) == 0)) {
        removeBottomWall(maze, startRow, startCol);
        removeWalls(maze, visited, startRow + 1, startCol);
      }
    }
    if (order[i] == 2) {
      if ((startCol > 0) && (squareVisited(visited, startRow, startCol - 1) == 0)) {
        removeLeftWall(maze, startRow, startCol);
        removeWalls(maze, visited, startRow, startCol - 1);
      }
    }
    if (order[i] == 3) {
      if ((startCol < (25 / 2) - 1) && (squareVisited(visited, startRow, startCol + 1) == 0)) {
        removeRightWall(maze, startRow, startCol);
        removeWalls(maze, visited, startRow, startCol + 1);
      }
    }
  }
}
```