user: 请将以下的汇编代码转换成C语言代码：

```asm
<maze_solve_helper_2>:
  endbr64
  push   %r12
  push   %rbx
  mov    %rdi,%rbx
L398:
  mov    %rbx,%r9
  xor    %r12d,%r12d
  xor    %r10d,%r10d
  nopl   0x0(%rax,%rax,1)
L63:
  mov    %r9,%rcx
  lea    -0x51(%r9),%r11
  xor    %eax,%eax
  add    $0x51,%r9
  jmp    L236
  nopw   0x0(%rax,%rax,1)
L273:
  add    $0x1,%rax
  cmp    $0x51,%rax
  je     L89
L236:
  cmpb   $0x20,(%rcx,%rax,1)
  jne    L273
  xor    %edx,%edx
  test   %r10d,%r10d
  je     L221
  movzbl (%r11,%rax,1),%esi
  cmp    $0x23,%sil
  sete   %dl
  cmp    $0x2a,%sil
  sete   %sil
  or     %esi,%edx
  movzbl %dl,%edx
L221:
  test   %rax,%rax
  je     L73
  movzbl -0x1(%rcx,%rax,1),%esi
  cmp    $0x23,%sil
  je     L308
  cmp    $0x2a,%sil
  je     L308
L73:
  movzbl 0x1(%rcx,%rax,1),%edi
  movzbl (%r9,%rax,1),%r8d
  cmp    $0x2a,%dil
  sete   %sil
  cmp    $0x23,%dil
  sete   %dil
  or     %edi,%esi
  cmp    $0x23,%r8b
  je     L340
  cmp    $0x2a,%r8b
  je     L340
  test   %sil,%sil
  je     L273
L197:
  add    $0x1,%edx
L229:
  cmp    $0x2,%edx
  jle    L273
  movb   $0x2a,(%rcx,%rax,1)
  add    $0x1,%rax
  mov    $0x1,%r12d
  cmp    $0x51,%rax
  jne    L236
  nop
L89:
  add    $0x1,%r10d
  cmp    $0x29,%r10d
  jne    L63
  test   %r12d,%r12d
  jne    L398
  lea    0x51(%rbx),%rcx
  lea    0xd4a(%rbx),%rsi
L375:
  lea    -0x51(%rcx),%rax
  jmp    L408
  nopl   0x0(%rax,%rax,1)
L201:
  cmp    $0x2a,%dl
  jne    L392
  movb   $0x20,(%rax)
L392:
  add    $0x1,%rax
  cmp    %rax,%rcx
  je     L59
L408:
  movzbl (%rax),%edx
  cmp    $0x20,%dl
  jne    L201
  movb   $0x2e,(%rax)
  add    $0x1,%rax
  cmp    %rax,%rcx
  jne    L408
L59:
  add    $0x51,%rcx
  cmp    %rsi,%rcx
  jne    L375
  xor    %edi,%edi
  xor    %r8d,%r8d
  xor    %edx,%edx
  mov    $0x1,%eax
L122:
  test   %edx,%edx
  je     L40
  lea    -0x1(%rdx),%esi
  cmp    %r8d,%esi
  jne    L111
  cmp    %eax,%edi
  jne    L111
L40:
  cmp    %edx,%r8d
  lea    -0x1(%rax),%ecx
  setne  %r9b
  cmp    %edi,%ecx
  jne    L49
  test   %r9b,%r9b
  jne    L49
L248:
  lea    0x1(%rdx),%esi
  cmp    %r8d,%esi
  jne    L275
  cmp    %eax,%edi
  jne    L275
L232:
  lea    0x1(%rax),%ecx
  cmp    %edi,%ecx
  jne    L317
  test   %r9b,%r9b
  je     L15
L317:
  movslq %edx,%rsi
  movslq %ecx,%rdi
  lea    (%rsi,%rsi,8),%rsi
  lea    (%rsi,%rsi,8),%rsi
  add    %rbx,%rsi
  cmpb   $0x2e,(%rsi,%rdi,1)
  je     L222
L15:
  mov    %r12d,%eax
  pop    %rbx
  pop    %r12
  ret
  nopl   0x0(%rax,%rax,1)
L340:
  add    $0x1,%edx
  test   %sil,%sil
  je     L229
  jmp    L197
  nopl   0x0(%rax)
L308:
  add    $0x1,%edx
  jmp    L73
L49:
  movslq %edx,%rsi
  movslq %ecx,%r10
  lea    (%rsi,%rsi,8),%rsi
  lea    (%rsi,%rsi,8),%rsi
  add    %rbx,%rsi
  cmpb   $0x2e,(%rsi,%r10,1)
  jne    L248
L222:
  mov    %edx,%esi
  jmp    L86
L275:
  movslq %esi,%rcx
  movslq %eax,%r8
  lea    (%rcx,%rcx,8),%rcx
  lea    (%rcx,%rcx,8),%rcx
  add    %rbx,%rcx
  cmpb   $0x2e,(%rcx,%r8,1)
  jne    L232
L345:
  mov    %eax,%ecx
L86:
  mov    %edx,%r8d
  mov    %eax,%edi
  cmp    $0x28,%esi
  jne    L211
  cmp    $0x4f,%ecx
  je     L42
L211:
  mov    %ecx,%eax
  mov    %esi,%edx
  jmp    L122
L111:
  movslq %esi,%rcx
  movslq %eax,%r9
  lea    (%rcx,%rcx,8),%rcx
  lea    (%rcx,%rcx,8),%rcx
  add    %rbx,%rcx
  cmpb   $0x2e,(%rcx,%r9,1)
  jne    L40
  jmp    L345
L42:
  mov    $0x1,%r12d
  jmp    L15
```

assistant: ```c
int maze_solve_helper_2(char maze[41][81]) {
  int r = 0, c = 0, walls = 0, reloop = 1, old_r = 0, old_c = 0, new_r = 0, new_c = 0;
  while (reloop) {
    reloop = 0;
    r = 0;
    c = 0;
    walls = 0;
    while (r < 41) {
      walls = 0;
      c = 0;
      while (c < 81) {
        walls = 0;
        if (maze[r][c] == ' ') {
          if (r != 0)
            if (maze[r - 1][c] == '#' || maze[r - 1][c] == '*')
              walls++;
          if (c != 0)
            if (maze[r][c - 1] == '#' || maze[r][c - 1] == '*')
              walls++;
          if (r != 41)
            if (maze[r + 1][c] == '#' || maze[r + 1][c] == '*')
              walls++;
          if (c != 81)
            if (maze[r][c + 1] == '#' || maze[r][c + 1] == '*')
              walls++;
          if (walls >= 3) {
            maze[r][c] = '*';
            reloop = 1;
          }
        }
        c++;
      }
      r++;
    }
  }
  r = 0;
  c = 0;
  while (r < 41) {
    c = 0;
    while (c < 81) {
      if (maze[r][c] == ' ')
        maze[r][c] = '.';
      if (maze[r][c] == '*')
        maze[r][c] = ' ';
      c++;
    }
    r++;
  }
  r = 0;
  c = 1;
  while (1) {
    if (r == 40 && c == 79)
      goto success;
    if (r != 0) {
      new_r = r - 1;
      new_c = c;
      if (!(new_r == old_r && new_c == old_c) && maze[new_r][new_c] == '.') {
        old_r = r;
        old_c = c;
        r = new_r;
        c = new_c;
        continue;
      }
    }
    new_r = r;
    new_c = c - 1;
    if (!(new_r == old_r && new_c == old_c) && maze[new_r][new_c] == '.') {
      old_r = r;
      old_c = c;
      r = new_r;
      c = new_c;
      continue;
    }
    new_r = r + 1;
    new_c = c;
    if (!(new_r == old_r && new_c == old_c) && maze[new_r][new_c] == '.') {
      old_r = r;
      old_c = c;
      r = new_r;
      c = new_c;
      continue;
    }
    new_r = r;
    new_c = c + 1;
    if (!(new_r == old_r && new_c == old_c) && maze[new_r][new_c] == '.') {
      old_r = r;
      old_c = c;
      r = new_r;
      c = new_c;
      continue;
    }
    return 0;
  }
success:
  return 1;
}
```