user: 下面的汇编指令对应的C源代码是什么：

```asm
<gfx_window>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x18,%rsp
  mov    %edi,%r12d
  mov    %esi,%ebx
  mov    %edx,0x8(%rsp)
  mov    %ecx,%r13d
  mov    %r8,%rbp
  mov    %r9d,0x4(%rsp)
  sub    %edi,%edx
  mov    %edx,%r14d
  mov    %ecx,%r15d
  sub    %esi,%r15d
  mov    %r8,%rdi
  call   <util_strlen@plt>
  cmpl   $0x0,0x4(%rsp)
  jne    L6
  test   %r15d,%r15d
  jle    L74
L34:
  mov    %ebx,%esi
  mov    %r12d,%edi
  call   <go_to_xy@plt>
  mov    $0x20,%esi
  mov    %r14d,%edi
  call   <spacer@plt>
  add    $0x1,%ebx
  cmp    %r13d,%ebx
  jne    L34
  jmp    L74
L6:
  mov    %r14d,%ecx
  sub    %eax,%ecx
  mov    %ecx,0xc(%rsp)
  sub    $0x8,%ecx
  mov    %ecx,0x4(%rsp)
  js     L35
L73:
  mov    $0x0,%edi
  call   <reverse@plt>
  mov    %ebx,%esi
  mov    %r12d,%edi
  call   <go_to_xy@plt>
  mov    $0xc9,%edi
  call   <putchar@plt>
  mov    0x4(%rsp),%eax
  mov    %eax,%edi
  shr    $0x1f,%edi
  add    %eax,%edi
  sar    %edi
  mov    $0xcd,%esi
  call   <spacer@plt>
  mov    $0xb9,%edi
  call   <putchar@plt>
  mov    $0x1,%edi
  call   <reverse@plt>
  mov    %rbp,%rsi
  lea    D1(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x0,%edi
  call   <reverse@plt>
  mov    $0xcc,%edi
  call   <putchar@plt>
  mov    0xc(%rsp),%eax
  sub    $0x7,%eax
  mov    %eax,%edi
  shr    $0x1f,%edi
  add    %eax,%edi
  sar    %edi
  mov    $0xcd,%esi
  call   <spacer@plt>
  mov    $0xbb,%edi
  call   <putchar@plt>
  cmp    $0x2,%r15d
  jle    L21
  lea    0x1(%rbx),%ebp
  lea    -0x1(%r15,%rbx,1),%ebx
  mov    0x8(%rsp),%r15d
  sub    $0x1,%r15d
L37:
  mov    %ebp,%esi
  mov    %r12d,%edi
  call   <go_to_xy@plt>
  mov    $0xba,%edi
  call   <putchar@plt>
  mov    %ebp,%esi
  mov    %r15d,%edi
  call   <go_to_xy@plt>
  mov    $0xba,%edi
  call   <putchar@plt>
  add    $0x1,%ebp
  cmp    %ebp,%ebx
  jne    L37
L21:
  lea    -0x1(%r13),%esi
  mov    %r12d,%edi
  call   <go_to_xy@plt>
  mov    $0xc8,%edi
  call   <putchar@plt>
  lea    -0x2(%r14),%edi
  mov    $0xcd,%esi
  call   <spacer@plt>
  mov    $0xbc,%edi
  call   <putchar@plt>
L74:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L35:
  mov    %rbp,%rdi
  call   <util_strlen@plt>
  add    0x4(%rsp),%eax
  cltq
  movb   $0x0,0x0(%rbp,%rax,1)
  jmp    L73
```

tool_calls: name: disassemble_data
arguments: tag: D1
data_type: string

tool: D1:   %s  

assistant: ```c
void gfx_window(int x1, int y1, int x2, int y2, char *title, int draw) {
  int w = x2 - x1;
  int h = y2 - y1;
  int padding = w - util_strlen(title) - 8;
  int i;
  if (draw) {
    if (padding < 0) {
      title[util_strlen(title) + padding] = '\0';
    }
    reverse(0);
    go_to_xy(x1, y1);
    printf("%c", 201);
    spacer(padding / 2, 205);
    printf("%c", 185);
    reverse(1);
    printf("  %s  ", title);
    reverse(0);
    printf("%c", 204);
    spacer((padding + 1) / 2, 205);
    printf("%c", 187);
    for (i = 1; i < h - 1; i++) {
      go_to_xy(x1, y1 + i);
      printf("%c", 186);
      go_to_xy(x2 - 1, y1 + i);
      printf("%c", 186);
    }
    go_to_xy(x1, y2 - 1);
    printf("%c", 200);
    spacer(w - 2, 205);
    printf("%c", 188);
  } else {
    for (i = 0; i < h; ++i) {
      go_to_xy(x1, y1 + i);
      spacer(w, 32);
    }
  }
}
```