user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<draw>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x38,%rsp
  mov    %edi,-0x44(%rbp)
  mov    %esi,-0x48(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %edi,%eax
  lea    -0x1(%rdi),%r9d
  lea    -0x1(%rsi),%r10d
  movslq %esi,%r15
  cltq
  imul   %r15,%rax
  add    $0xf,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffffff0,%rcx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rdx
  sub    %rax,%rdx
L142:
  cmp    %rdx,%rsp
  je     L300
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L142
L300:
  mov    %rcx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L306
  orq    $0x0,-0x8(%rsp,%rax,1)
L306:
  mov    %rsp,%r14
  test   %r9d,%r9d
  js     L189
  test   %r10d,%r10d
  js     L189
  mov    -0x48(%rbp),%eax
  lea    -0x2(%rax),%r11d
  mov    $0x0,%ebx
  mov    $0x0,%r8d
  mov    $0x4f,%eax
  mov    $0x0,%ecx
  mov    $0x0,%edi
  lea    0x1(%r14),%rdx
  mov    %rdx,-0x50(%rbp)
  lea    -0x1(%r14),%rdx
  mov    %rdx,-0x60(%rbp)
  jmp    L206
L51:
  cmp    %ecx,%r12d
  jl     L188
  movslq %r12d,%r13
  movslq %r9d,%rsi
  imul   %r15,%rsi
  lea    0x0(%r13,%rsi,1),%rdx
  add    %r14,%rdx
  mov    %rdx,-0x58(%rbp)
  add    -0x60(%rbp),%rsi
  mov    %r11d,%edx
  sub    %ecx,%edx
  sub    %rdx,%rsi
  add    %r13,%rsi
  mov    -0x58(%rbp),%rdx
L256:
  mov    %al,(%rdx)
  sub    $0x1,%rdx
  cmp    %rsi,%rdx
  jne    L256
L188:
  lea    -0x1(%r9),%edx
  mov    %edi,%r9d
  cmp    %edx,%edi
  je     L58
  jg     L193
  mov    %edx,%r9d
  jmp    L184
L11:
  mov    %ecx,%r12d
  mov    %r9d,%edx
L184:
  movslq %ecx,%r13
  add    %r14,%r13
L154:
  movslq %edx,%rsi
  imul   %r15,%rsi
  mov    %al,0x0(%r13,%rsi,1)
  sub    $0x1,%edx
  cmp    %r8d,%edx
  jne    L154
L84:
  add    $0x1,%ecx
L58:
  cmp    $0x4f,%al
  sete   %al
  lea    0x4f(%rax,%rax,8),%eax
  add    $0x1,%r8d
  sub    $0x1,%r10d
  sub    $0x1,%r11d
  add    %r15,%rbx
  cmp    %edi,%r9d
  jl     L189
  cmp    %r12d,%ecx
  jg     L189
L206:
  mov    %r10d,%r12d
  cmp    %r10d,%ecx
  jg     L178
  movslq %ecx,%rsi
  lea    (%rsi,%rbx,1),%rdx
  add    %r14,%rdx
  add    -0x50(%rbp),%rsi
  add    %rbx,%rsi
  mov    %r10d,%r13d
  sub    %ecx,%r13d
  add    %r13,%rsi
L41:
  mov    %al,(%rdx)
  add    $0x1,%rdx
  cmp    %rsi,%rdx
  jne    L41
L178:
  add    $0x1,%edi
  cmp    %r9d,%edi
  jg     L145
  lea    0x1(%r9),%r13d
  mov    %edi,%edx
  movslq %r12d,%r12
  add    %r14,%r12
L117:
  movslq %edx,%rsi
  imul   %r15,%rsi
  mov    %al,(%r12,%rsi,1)
  add    $0x1,%edx
  cmp    %r13d,%edx
  jne    L117
  mov    %r11d,%r12d
  cmp    %ecx,%r11d
  jne    L51
  cmp    %r9d,%edi
  jne    L11
  mov    %ecx,%r12d
  mov    %edi,%r9d
  jmp    L58
L193:
  mov    %edx,%r9d
  jmp    L84
L189:
  cmpl   $0x0,-0x44(%rbp)
  jle    L164
  mov    -0x48(%rbp),%eax
  lea    -0x1(%rax),%ecx
  mov    %rcx,-0x50(%rbp)
  lea    0x1(%r14,%rcx,1),%r12
  mov    $0x0,%r14d
  lea    D5(%rip),%r13
  mov    %r15,-0x58(%rbp)
  mov    %eax,%r15d
  jmp    L217
L307:
  movsbl (%rbx),%esi
  mov    %r13,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  add    $0x1,%rbx
  cmp    %rbx,%r12
  jne    L307
L27:
  mov    $0xa,%edi
  call   <putchar@plt>
  add    $0x1,%r14d
  add    -0x58(%rbp),%r12
  cmp    %r14d,-0x44(%rbp)
  je     L164
L217:
  mov    %r12,%rbx
  sub    -0x50(%rbp),%rbx
  sub    $0x1,%rbx
  test   %r15d,%r15d
  jg     L307
  jmp    L27
L145:
  mov    %r11d,%r12d
  cmp    %ecx,%r11d
  jne    L51
  mov    %ecx,%r12d
  jmp    L84
L164:
  mov    -0x38(%rbp),%rax
  sub    %fs:0x28,%rax
  jne    L253
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L253:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: data_tag: D5
datatype: string

tool: D5: %c 

assistant: ```c
void draw(int row, int col) {
  int sr = 0, er = row - 1;
  int sc = 0, ec = col - 1;
  char matrix[row][col];
  int i;
  char c = 'O';
  while (sr <= er && sc <= ec) {
    for (int i = sc; i <= ec; i++) {
      matrix[sr][i] = c;
    }
    sr++;
    for (int i = sr; i <= er; i++) {
      matrix[i][ec] = c;
    }
    ec--;
    if (sc != ec) {
      for (int i = ec; i >= sc; i--) {
        matrix[er][i] = c;
      }
      er--;
    }
    if (sr != er) {
      for (int i = er; i >= sr; i--) {
        matrix[i][sc] = c;
      }
      sc++;
    }
    if (c == 'O') {
      c = 'X';
    } else {
      c = 'O';
    }
  }
  for (int i = 0; i < row; i++) {
    for (int j = 0; j < col; j++) {
      printf("%c ", matrix[i][j]);
    }
    printf("\n");
  }
}
```