user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<different_modes_test>:
  endbr64
  push   %r12
  lea    D27(%rip),%rdi
  lea    D20(%rip),%r12
  push   %rbp
  push   %rbx
  call   <puts@plt>
  xor    %eax,%eax
  call   <init_8n1@plt>
  mov    %r12,%rdi
  xor    %eax,%eax
  mov    $0x1c2,%esi
  call   <printf@plt>
  mov    $0x9c000002,%edi
  call   <getreg@plt>
  cmp    $0xc1,%eax
  je     L8
  mov    $0x1c3,%esi
  lea    D22(%rip),%rdi
  call   <fail@plt>
L8:
  mov    $0x1c4,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  mov    $0x1,%ebx
  call   <printf@plt>
L14:
  mov    $0x80,%esi
  mov    $0x9c000003,%edi
  call   <setreg@plt>
  xor    %esi,%esi
  mov    $0x9c000001,%edi
  call   <setreg@plt>
  mov    %ebx,%esi
  mov    $0x9c000000,%edi
  add    $0x1,%ebx
  call   <setreg@plt>
  mov    $0x3,%esi
  mov    $0x9c000003,%edi
  call   <setreg@plt>
  mov    $0x8,%edi
  call   <test_mode@plt>
  mov    $0x1cd,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  call   <printf@plt>
  cmp    $0x5,%ebx
  jne    L14
  mov    $0x1cf,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  xor    %ebp,%ebp
  call   <printf@plt>
  mov    $0x80,%esi
  mov    $0x9c000003,%edi
  call   <setreg@plt>
  xor    %esi,%esi
  mov    $0x9c000001,%edi
  call   <setreg@plt>
  mov    $0x1,%esi
  mov    $0x9c000000,%edi
  call   <setreg@plt>
  mov    $0x1d4,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  call   <printf@plt>
  nopl   0x0(%rax,%rax,1)
L78:
  xor    %ebx,%ebx
L3:
  mov    %ebp,%esi
  mov    $0x9c000003,%edi
  or     %ebx,%esi
  call   <setreg@plt>
  lea    0x5(%rbx),%edi
  add    $0x1,%ebx
  call   <test_mode@plt>
  mov    $0x1db,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  call   <printf@plt>
  cmp    $0x4,%ebx
  jne    L3
  add    $0x8,%ebp
  cmp    $0x40,%ebp
  jne    L78
  mov    $0x1dd,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  xor    %ebx,%ebx
  call   <printf@plt>
L28:
  mov    %ebx,%esi
  mov    $0x9c000003,%edi
  or     $0x4,%esi
  call   <setreg@plt>
  lea    0x5(%rbx),%edi
  add    $0x1,%ebx
  call   <test_mode@plt>
  mov    $0x1e3,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  call   <printf@plt>
  cmp    $0x4,%ebx
  jne    L28
  mov    %r12,%rdi
  mov    $0x1e5,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x54,%edi
  call   <send_char@plt>
  nop
L32:
  mov    $0x9c000005,%edi
  call   <getreg@plt>
  cmp    $0x60,%eax
  jne    L32
  mov    $0x80,%esi
  mov    $0x9c000003,%edi
  call   <setreg@plt>
  xor    %esi,%esi
  mov    $0x9c000001,%edi
  call   <setreg@plt>
  mov    $0x2,%esi
  mov    $0x9c000000,%edi
  call   <setreg@plt>
  mov    $0x3,%esi
  mov    $0x9c000003,%edi
  call   <setreg@plt>
  mov    $0x1ee,%esi
  mov    %r12,%rdi
  xor    %eax,%eax
  call   <printf@plt>
  nopw   0x0(%rax,%rax,1)
L51:
  mov    $0x9c000005,%edi
  call   <getreg@plt>
  test   $0x1,%al
  je     L51
  mov    $0x9c000000,%edi
  call   <getreg@plt>
  mov    %r12,%rdi
  mov    $0x1f1,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x54,%edi
  call   <send_char@plt>
  nopl   0x0(%rax)
L1:
  mov    $0x9c000005,%edi
  call   <getreg@plt>
  cmp    $0x60,%eax
  jne    L1
  mov    %r12,%rdi
  mov    $0x1f5,%esi
  xor    %eax,%eax
  call   <printf@plt>
  pop    %rbx
  lea    D1(%rip),%rdi
  pop    %rbp
  pop    %r12
  jmp    10d0 <puts@plt>
```

tool_calls: name: read_data
arguments: data_tag: D27
data_type: string
name: read_data
arguments: data_tag: D20
data_type: string
name: read_data
arguments: data_tag: D22
data_type: string
name: read_data
arguments: data_tag: D1
data_type: string

tool: D27: different modes test

tool: D20: Passed line %i


tool: D22: ?

tool: D1: OK

assistant: ```c
void different_modes_test() {
  int speed, parity, length;
  printf("different modes test\n");
  init_8n1();
  printf("Passed line %i\n", 450);
  ((getreg(((0x9c000000) + 2)) == 0xc1) ? 1 : fail("?", 451));
  printf("Passed line %i\n", 452);
  for (speed = 1; speed < 5; speed++) {
    setreg(((0x9c000000) + 3), (0x80));
    setreg(((0x9c000000) + 1), speed >> 8);
    setreg(((0x9c000000) + 0), speed & 0xff);
    setreg(((0x9c000000) + 3), 0x03);
    test_mode(8);
    printf("Passed line %i\n", 461);
  }
  printf("Passed line %i\n", 463);
  setreg(((0x9c000000) + 3), (0x80));
  setreg(((0x9c000000) + 1), 1 >> 8);
  setreg(((0x9c000000) + 0), 1 & 0xff);
  printf("Passed line %i\n", 468);
  for (parity = 0; parity < 8; parity++)
    for (length = 0; length < 4; length++) {
      setreg(((0x9c000000) + 3), length | (0 << 2) | (parity << 3));
      test_mode(5 + length);
      printf("Passed line %i\n", 475);
    }
  printf("Passed line %i\n", 477);
  for (length = 0; length < 4; length++) {
    setreg(((0x9c000000) + 3), length | (1 << 2) | (0 << 3));
    test_mode(5 + length);
    printf("Passed line %i\n", 483);
  }
  printf("Passed line %i\n", 485);
  send_char('T');
  while (getreg(((0x9c000000) + 5)) != 0x60)
    ;
  setreg(((0x9c000000) + 3), (0x80));
  setreg(((0x9c000000) + 1), 2 >> 8);
  setreg(((0x9c000000) + 0), 2 & 0xff);
  setreg(((0x9c000000) + 3), 0x03);
  printf("Passed line %i\n", 494);
  while (!(getreg(((0x9c000000) + 5)) & 1))
    ;
  getreg(((0x9c000000) + 0));
  printf("Passed line %i\n", 497);
  send_char('T');
  while (getreg(((0x9c000000) + 5)) != 0x60)
    ;
  printf("Passed line %i\n", 501);
  printf("OK\n");
}
```