user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<main>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  lea    D120(%rip),%rbp
L1:
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    %rax,%rbx
  mov    $0x0,%eax
  call   <getchar@plt>
  lea    -0x30(%rbx),%eax
  cmp    $0x1,%eax
  ja     L1
  mov    %eax,%ebx
  lea    D29(%rip),%rdi
  call   <puts@plt>
  lea    D12(%rip),%rdi
  call   <puts@plt>
  lea    D117(%rip),%rdi
  call   <puts@plt>
  lea    D126(%rip),%rdi
  call   <puts@plt>
  lea    D74(%rip),%rdi
  call   <puts@plt>
  lea    D17(%rip),%rdi
  call   <puts@plt>
  lea    D143(%rip),%rdi
  call   <puts@plt>
  mov    %ebx,%esi
  lea    D142(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  lea    D93(%rip),%rbp
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    $0x0,%eax
  call   <setup_io@plt>
  mov    $0x0,%eax
  call   <setup_gpio@plt>
  mov    $0x0,%eax
  call   <setup_spi@plt>
  mov    $0x0,%esi
  mov    %ebx,%edi
  call   <write_dac@plt>
  lea    D88(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    $0x400,%esi
  mov    %ebx,%edi
  call   <write_dac@plt>
  lea    D42(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    $0x7f0,%esi
  mov    %ebx,%edi
  call   <write_dac@plt>
  lea    D63(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    $0xaa0,%esi
  mov    %ebx,%edi
  call   <write_dac@plt>
  lea    D15(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    $0xff0,%esi
  mov    %ebx,%edi
  call   <write_dac@plt>
  lea    D70(%rip),%rdi
  call   <puts@plt>
  mov    %rbp,%rdi
  call   <puts@plt>
  mov    $0x0,%eax
  call   <getchar@plt>
  mov    $0x0,%eax
  call   <restore_io@plt>
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

tool_calls: name: parse_data
arguments: label: D120
type_infered: string
name: parse_data
arguments: label: D29
type_infered: string
name: parse_data
arguments: label: D12
type_infered: string
name: parse_data
arguments: label: D117
type_infered: string
name: parse_data
arguments: label: D126
type_infered: string
name: parse_data
arguments: label: D74
type_infered: string
name: parse_data
arguments: label: D17
type_infered: string
name: parse_data
arguments: label: D143
type_infered: string
name: parse_data
arguments: label: D142
type_infered: string
name: parse_data
arguments: label: D93
type_infered: string
name: parse_data
arguments: label: D88
type_infered: string
name: parse_data
arguments: label: D42
type_infered: string
name: parse_data
arguments: label: D63
type_infered: string
name: parse_data
arguments: label: D15
type_infered: string
name: parse_data
arguments: label: D70
type_infered: string

tool: D120: Which channel do you want to test? Type 0 or 1.

tool: D29: These are the connections for the digital to analogue test:

tool: D12: jumper connecting GP11 to SCLK

tool: D117: jumper connecting GP10 to MOSI

tool: D126: jumper connecting GP9 to MISO

tool: D74: jumper connecting GP7 to CSnB

tool: D17: Multimeter connections (set your meter to read V DC):

tool: D143:   connect black probe to GND

tool: D142:   connect red probe to DA%d on J29


tool: D93: When ready hit enter.

tool: D88: Your meter should read about 0V

tool: D42: Your meter should read about 0.5V

tool: D63: Your meter should read about 1.02V

tool: D15: Your meter should read about 1.36V

tool: D70: Your meter should read about 2.04V

assistant: ```c
void main(void) {
  int d, chan, dummy;
  do {
    printf("Which channel do you want to test? Type 0 or 1.\n");
    chan = (int)getchar();
    (void)getchar();
  } while (chan != '0' && chan != '1');
  chan = chan - '0';
  printf("These are the connections for the digital to analogue test:\n");
  printf("jumper connecting GP11 to SCLK\n");
  printf("jumper connecting GP10 to MOSI\n");
  printf("jumper connecting GP9 to MISO\n");
  printf("jumper connecting GP7 to CSnB\n");
  printf("Multimeter connections (set your meter to read V DC):\n");
  printf("  connect black probe to GND\n");
  printf("  connect red probe to DA%d on J29\n", chan);
  printf("When ready hit enter.\n");
  (void)getchar();
  setup_io();
  setup_gpio();
  setup_spi();
  d = 0x000;
  write_dac(chan, d);
  printf("Your meter should read about 0V\n");
  printf("When ready hit enter.\n");
  (void)getchar();
  d = 0x400;
  write_dac(chan, d);
  printf("Your meter should read about 0.5V\n");
  printf("When ready hit enter.\n");
  (void)getchar();
  d = 0x7F0;
  write_dac(chan, d);
  printf("Your meter should read about 1.02V\n");
  printf("When ready hit enter.\n");
  (void)getchar();
  d = 0xAA0;
  write_dac(chan, d);
  printf("Your meter should read about 1.36V\n");
  printf("When ready hit enter.\n");
  (void)getchar();
  d = 0xFF0;
  write_dac(chan, d);
  printf("Your meter should read about 2.04V\n");
  printf("When ready hit enter.\n");
  (void)getchar();
  restore_io();
}
```