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

```asm
<__cl_printf>:
  endbr64
  push   %r15
  mov    %rdi,%rsi
  push   %r14
  lea    D31(%rip),%r14
  push   %r13
  lea    D34(%rip),%r13
  push   %r12
  lea    D56(%rip),%r12
  push   %rbp
  lea    D36(%rip),%rbp
  push   %rbx
  mov    %rdi,%rbx
  xor    %edi,%edi
  sub    $0x28,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  call   <va_start@plt>
  movzbl (%rbx),%eax
  mov    %al,0xf(%rsp)
  test   %al,%al
  je     L110
  nopw   0x0(%rax,%rax,1)
L30:
  cmp    $0x25,%al
  jne    L82
  movzbl 0x1(%rbx),%eax
  mov    %al,0xf(%rsp)
  cmp    $0x25,%al
  je     L83
  cmp    $0x66,%al
  je     L54
  cmp    $0x73,%al
  je     L95
  cmp    $0x64,%al
  je     L36
  xor    %edi,%edi
  call   <va_end@plt>
  lea    0xf(%rsp),%rsi
  lea    D53(%rip),%rdi
  call   <vprintf@plt>
  mov    $0xffffffff,%eax
L89:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L45
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L82:
  lea    0xf(%rsp),%rsi
  mov    %rbp,%rdi
  add    $0x1,%rbx
  call   <vprintf@plt>
  movzbl (%rbx),%eax
L81:
  mov    %al,0xf(%rsp)
  test   %al,%al
  jne    L30
L110:
  xor    %edi,%edi
  call   <va_end@plt>
  xor    %eax,%eax
  jmp    L89
  nopl   0x0(%rax,%rax,1)
L83:
  lea    0x10(%rsp),%rsi
  lea    D26(%rip),%rdi
  add    $0x2,%rbx
  call   <vprintf@plt>
  movzbl (%rbx),%eax
  jmp    L81
  nopw   0x0(%rax,%rax,1)
L54:
  lea    0x10(%rsp),%r15
  xor    %edi,%edi
  mov    $0x2,%edx
  mov    %r15,%rsi
  call   <__cl_va_arg@plt>
  mov    %r15,%rsi
  mov    %r14,%rdi
  call   <vprintf@plt>
L79:
  movzbl 0x2(%rbx),%eax
  add    $0x2,%rbx
  jmp    L81
  nopl   0x0(%rax)
L36:
  lea    0x10(%rsp),%r15
  xor    %edi,%edi
  mov    $0x1,%edx
  mov    %r15,%rsi
  call   <__cl_va_arg@plt>
  mov    %r15,%rsi
  mov    %r12,%rdi
  call   <vprintf@plt>
  jmp    L79
  nopl   0x0(%rax)
L95:
  lea    0x10(%rsp),%r15
  xor    %edi,%edi
  mov    $0x2,%edx
  mov    %r15,%rsi
  call   <__cl_va_arg@plt>
  mov    %r15,%rsi
  mov    %r13,%rdi
  call   <vprintf@plt>
  jmp    L79
L45:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D31
type: string
name: unpack_data
arguments: data_label: D34
type: string
name: unpack_data
arguments: data_label: D56
type: string
name: unpack_data
arguments: data_label: D36
type: string
name: unpack_data
arguments: data_label: D53
type: string
name: unpack_data
arguments: data_label: D26
type: string

tool: D31: %lf

tool: D34: %s

tool: D56: %d

tool: D36: %c

tool: D53: (printf format string error)

tool: D26: %%

assistant: ```c
int __cl_printf(__attribute__((address_space(4))) char *restrict format, ...) {
  char arg_data[8];
  va_list ap;
  va_start(ap, format);
  char ch = *format;
  while (ch) {
    if (ch == '%') {
      ch = *++format;
      if (ch == '%') {
        vprintf("%%", arg_data);
        ch = *++format;
      } else {
        switch (ch) {
        case 'd': {
          __cl_va_arg(ap, arg_data, 1);
          vprintf("%d", arg_data);
          break;
        }
        case 'f': {
          __cl_va_arg(ap, arg_data, 2);
          vprintf("%lf", arg_data);
          break;
        }
        case 's': {
          __cl_va_arg(ap, arg_data, 2);
          vprintf("%s", arg_data);
          break;
        }
        default:
          goto error;
        }
        ch = *++format;
      }
    } else {
      vprintf("%c", &ch);
      ch = *++format;
    }
  }
  va_end(ap);
  return 0;
error:
  va_end(ap);
  vprintf("(printf format string error)", &ch);
  return -1;
}
```