user: Demonstrate the C code that generates the assembly output below:

```asm
<gfx_window>:
  endbr64
  push   %r15
  mov    %ecx,%eax
  mov    %r8,%r15
  push   %r14
  mov    %edx,%r14d
  sub    %esi,%eax
  push   %r13
  sub    %edi,%r14d
  mov    %edx,%r13d
  push   %r12
  mov    %ecx,%r12d
  push   %rbp
  mov    %edi,%ebp
  mov    %r8,%rdi
  push   %rbx
  mov    %esi,%ebx
  sub    $0x18,%rsp
  mov    %r9d,0x8(%rsp)
  mov    %eax,0x4(%rsp)
  call   <util_strlen@plt>
  mov    0x8(%rsp),%r9d
  test   %r9d,%r9d
  jne    L25
  mov    0x4(%rsp),%eax
  test   %eax,%eax
  jle    L64
  nopl   0x0(%rax)
L50:
  mov    %ebx,%esi
  mov    %ebp,%edi
  add    $0x1,%ebx
  call   <go_to_xy@plt>
  mov    $0x20,%esi
  mov    %r14d,%edi
  call   <spacer@plt>
  cmp    %r12d,%ebx
  jne    L50
L64:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L25:
  mov    %r14d,%ecx
  sub    %eax,%ecx
  mov    %ecx,%edx
  mov    %ecx,0x8(%rsp)
  sub    $0x8,%edx
  js     L9
L39:
  xor    %edi,%edi
  mov    %edx,0xc(%rsp)
  call   <reverse@plt>
  mov    %ebx,%esi
  mov    %ebp,%edi
  call   <go_to_xy@plt>
  mov    $0xc9,%edi
  call   <putchar@plt>
  mov    0xc(%rsp),%edx
  mov    $0xcd,%esi
  mov    %edx,%edi
  shr    $0x1f,%edi
  add    %edx,%edi
  sar    %edi
  call   <spacer@plt>
  mov    $0xb9,%edi
  call   <putchar@plt>
  mov    $0x1,%edi
  call   <reverse@plt>
  mov    %r15,%rsi
  lea    D0(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  xor    %edi,%edi
  call   <reverse@plt>
  mov    $0xcc,%edi
  call   <putchar@plt>
  mov    0x8(%rsp),%eax
  mov    $0xcd,%esi
  sub    $0x7,%eax
  mov    %eax,%edi
  shr    $0x1f,%edi
  add    %eax,%edi
  sar    %edi
  call   <spacer@plt>
  mov    $0xbb,%edi
  call   <putchar@plt>
  cmpl   $0x2,0x4(%rsp)
  jle    L12
  mov    0x4(%rsp),%eax
  lea    0x1(%rbx),%r15d
  sub    $0x1,%r13d
  lea    -0x1(%rax,%rbx,1),%ebx
  nopw   0x0(%rax,%rax,1)
L66:
  mov    %r15d,%esi
  mov    %ebp,%edi
  call   <go_to_xy@plt>
  mov    $0xba,%edi
  call   <putchar@plt>
  mov    %r15d,%esi
  mov    %r13d,%edi
  add    $0x1,%r15d
  call   <go_to_xy@plt>
  mov    $0xba,%edi
  call   <putchar@plt>
  cmp    %ebx,%r15d
  jne    L66
L12:
  lea    -0x1(%r12),%esi
  mov    %ebp,%edi
  call   <go_to_xy@plt>
  mov    $0xc8,%edi
  call   <putchar@plt>
  lea    -0x2(%r14),%edi
  mov    $0xcd,%esi
  call   <spacer@plt>
  add    $0x18,%rsp
  mov    $0xbc,%edi
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    10b0 <putchar@plt>
  xchg   %ax,%ax
L9:
  mov    %r15,%rdi
  mov    %edx,0xc(%rsp)
  call   <util_strlen@plt>
  mov    0xc(%rsp),%edx
  add    %edx,%eax
  cltq
  movb   $0x0,(%r15,%rax,1)
  jmp    L39
```

tool_calls: name: disassemble_data
arguments: tag: D0
type_infered: string

tool: D0:   %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);
    }
  }
}
```