user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<ASN1_BIT_STRING_set_bit>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %esi,-0x2c(%rbp)
  mov    %edx,-0x30(%rbp)
  mov    -0x2c(%rbp),%eax
  lea    0x7(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x3,%eax
  mov    %eax,-0x10(%rbp)
  mov    -0x2c(%rbp),%eax
  not    %eax
  and    $0x7,%eax
  mov    $0x1,%edx
  mov    %eax,%ecx
  shl    %cl,%edx
  mov    %edx,%eax
  mov    %eax,-0x14(%rbp)
  mov    -0x14(%rbp),%eax
  not    %eax
  mov    %eax,-0xc(%rbp)
  cmpl   $0x0,-0x30(%rbp)
  jne    L127
  movl   $0x0,-0x14(%rbp)
L127:
  cmpq   $0x0,-0x28(%rbp)
  jne    L119
  mov    $0x0,%eax
  jmp    L104
L119:
  mov    -0x28(%rbp),%rax
  mov    (%rax),%edx
  mov    D17(%rip),%rax
  mov    (%rax),%eax
  or     $0x7,%eax
  not    %eax
  and    %eax,%edx
  mov    -0x28(%rbp),%rax
  mov    %edx,(%rax)
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  cmp    %eax,-0x10(%rbp)
  jge    L68
  mov    -0x28(%rbp),%rax
  mov    0x8(%rax),%rax
  test   %rax,%rax
  jne    L98
L68:
  cmpl   $0x0,-0x30(%rbp)
  jne    L20
  mov    $0x1,%eax
  jmp    L104
L20:
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%esi
  mov    -0x28(%rbp),%rax
  mov    0x8(%rax),%rax
  mov    $0x1,%ecx
  mov    %rax,%rdi
  call   <recallocarray@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x8(%rbp)
  jne    L125
  mov    D0(%rip),%rax
  mov    (%rax),%eax
  mov    %eax,%edi
  call   <ASN1error@plt>
  mov    $0x0,%eax
  jmp    L104
L125:
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%ecx
  mov    %edx,%eax
  sub    %ecx,%eax
  test   %eax,%eax
  jle    L109
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  sub    %eax,%edx
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  movslq %eax,%rcx
  mov    -0x8(%rbp),%rax
  add    %rcx,%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
L109:
  mov    -0x28(%rbp),%rax
  mov    -0x8(%rbp),%rdx
  mov    %rdx,0x8(%rax)
  mov    -0x10(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    %edx,0x4(%rax)
L98:
  mov    -0x28(%rbp),%rax
  mov    0x8(%rax),%rdx
  mov    -0x10(%rbp),%eax
  cltq
  add    %rdx,%rax
  movzbl (%rax),%eax
  mov    %eax,%edx
  mov    -0xc(%rbp),%eax
  and    %eax,%edx
  mov    -0x14(%rbp),%eax
  mov    %edx,%ecx
  or     %eax,%ecx
  mov    -0x28(%rbp),%rax
  mov    0x8(%rax),%rdx
  mov    -0x10(%rbp),%eax
  cltq
  add    %rdx,%rax
  mov    %ecx,%edx
  mov    %dl,(%rax)
  jmp    L49
L23:
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  lea    -0x1(%rax),%edx
  mov    -0x28(%rbp),%rax
  mov    %edx,0x4(%rax)
L49:
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  test   %eax,%eax
  jle    L106
  mov    -0x28(%rbp),%rax
  mov    0x8(%rax),%rdx
  mov    -0x28(%rbp),%rax
  mov    0x4(%rax),%eax
  cltq
  sub    $0x1,%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  test   %al,%al
  je     L23
L106:
  mov    $0x1,%eax
L104:
  leave
  ret
```

assistant: ```c
int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value) {
  int w, v, iv;
  unsigned char *c;
  w = n / 8;
  v = 1 << (7 - (n & 0x07));
  iv = ~v;
  if (!value)
    v = 0;
  if (a == NULL)
    return 0;
  a->flags &= ~(ASN1_STRING_FLAG_BITS_LEFT | 0x07);
  if ((a->length < (w + 1)) || (a->data == NULL)) {
    if (!value)
      return (1);
    if ((c = recallocarray(a->data, a->length, w + 1, 1)) == NULL) {
      ASN1error(ERR_R_MALLOC_FAILURE);
      return 0;
    }
    if (w + 1 - a->length > 0)
      memset(c + a->length, 0, w + 1 - a->length);
    a->data = c;
    a->length = w + 1;
  }
  a->data[w] = ((a->data[w]) & iv) | v;
  while ((a->length > 0) && (a->data[a->length - 1] == 0))
    a->length--;
  return (1);
}
```