user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  cmp    $0x2,%edi
  jne    L73
  mov    0x8(%rsi),%rdx
  movsbl (%rdx),%esi
  test   %sil,%sil
  je     L112
  movabs $0x8000000020006001,%r8
  xor    %eax,%eax
  nopl   (%rax)
L3:
  lea    -0x20(%rsi),%ecx
  movslq %eax,%rdi
  cmp    $0x3f,%cl
  jbe    L21
L131:
  lea    D49(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D30(%rip),%rdi
  call   <puts@plt>
  or     $0xffffffff,%eax
L149:
  add    $0x8,%rsp
  ret
  nopl   (%rax)
L21:
  bt     %rcx,%r8
  jae    L131
  movsbl 0x1(%rdx,%rax,1),%esi
  lea    0x1(%rax),%rcx
  test   %sil,%sil
  je     L126
  mov    %rcx,%rax
  jmp    L3
  nopl   0x0(%rax)
L126:
  add    %rdi,%rdx
  xor    %esi,%esi
  mov    %rdx,%rcx
  sub    %rax,%rcx
  jmp    L64
  nopl   (%rax)
L93:
  sub    $0x1,%rdx
  add    %esi,%esi
  js     L20
L64:
  movzbl (%rdx),%eax
  cmp    $0x2e,%al
  je     L16
  cmp    $0x2d,%al
  je     L145
  cmp    $0x20,%al
  je     L53
  cmp    $0x5f,%al
  je     L24
  mov    %esi,%edi
  shl    $0x5,%edi
  xor    $0x1f,%edi
  cmp    $0x3d,%al
  cmove  %edi,%esi
  nopl   0x0(%rax,%rax,1)
L53:
  cmp    %rdx,%rcx
  jne    L93
L189:
  lea    D48(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  xor    %eax,%eax
  jmp    L149
  nopw   0x0(%rax,%rax,1)
L16:
  lea    0x1(%rsi,%rsi,1),%esi
  jmp    L53
  cs nopw 0x0(%rax,%rax,1)
L145:
  lea    0x3(,%rsi,4),%esi
  jmp    L53
L24:
  shl    $0x4,%esi
  xor    $0xf,%esi
  jmp    L53
L20:
  lea    D7(%rip),%rdi
  call   <puts@plt>
  mov    $0xfffffffe,%eax
  jmp    L149
L112:
  xor    %esi,%esi
  jmp    L189
L73:
  mov    %edi,%esi
  xor    %eax,%eax
  lea    D16(%rip),%rdi
  call   <printf@plt>
  lea    D34(%rip),%rdi
  call   <puts@plt>
  or     $0xffffffff,%eax
  jmp    L149
```

tool_calls: name: disassemble_data
arguments: data_tag: D49
type_guessed: string
name: disassemble_data
arguments: data_tag: D30
type_guessed: string
name: disassemble_data
arguments: data_tag: D48
type_guessed: string
name: disassemble_data
arguments: data_tag: D7
type_guessed: string
name: disassemble_data
arguments: data_tag: D16
type_guessed: string
name: disassemble_data
arguments: data_tag: D34
type_guessed: string

tool: D49: found character '%c'


tool: D30: Pattern must only include . - _ = or ' '.

tool: D48: %u


tool: D7: Pattern too long for a single int to hold.

tool: D16: argc = %d


tool: D34: Invalid arg. Enter a dot-dash pattern

assistant: ```c
int main(int argc, char **argv) {
  if (argc != 2) {
    printf("argc = %d\n", argc);
    printf("Invalid arg. Enter a dot-dash pattern\n");
    return -1;
  }
  int i = 0;
  char *pattern = argv[1];
  while (pattern[i] != '\0') {
    if (pattern[i] != '.' && pattern[i] != '-' && pattern[i] != ' ' && pattern[i] != '_' && pattern[i] != '=') {
      printf("found character '%c'\n", pattern[i]);
      printf("Pattern must only include . - _ = or ' '.\n");
      return -1;
    }
    i++;
  }
  unsigned int num = 0;
  for (--i; i >= 0; i--) {
    if (num & 0x80000000) {
      printf("Pattern too long for a single int to hold.\n");
      return -2;
    }
    if (pattern[i] == '.') {
      num <<= 1;
      num ^= 0b1;
    } else if (pattern[i] == '-') {
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
    } else if (pattern[i] == ' ') {
    } else if (pattern[i] == '_') {
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
    } else if (pattern[i] == '=') {
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
      num <<= 1;
      num ^= 0b1;
    }
    if (i != 0) {
      num <<= 1;
    }
  }
  printf("%u\n", num);
  return 0;
}
```