user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<i2c_ASN1_INTEGER>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  test   %rdi,%rdi
  je     L195
  mov    %rdi,%rdx
  mov    %rsi,%rbx
  mov    (%rdi),%ecx
  mov    D7(%rip),%rax
  and    (%rax),%ecx
  mov    0x4(%rdi),%ebp
  test   %ebp,%ebp
  je     L130
  mov    0x8(%rdi),%rsi
  mov    (%rsi),%eax
  cmp    $0x1,%ebp
  jne    L188
  test   %eax,%eax
  jne    L188
  mov    $0x0,%ecx
L187:
  test   %rbx,%rbx
  je     L110
  mov    (%rbx),%rdi
  mov    0x4(%rdx),%eax
  jmp    L88
L188:
  test   %ecx,%ecx
  jne    L179
  cmp    $0x7f,%eax
  jle    L179
  mov    $0x0,%ecx
  mov    $0x0,%esi
L120:
  add    $0x1,%ebp
  test   %rbx,%rbx
  je     L110
  mov    (%rbx),%rax
  lea    0x1(%rax),%rdi
  mov    %sil,(%rax)
  mov    0x4(%rdx),%eax
  test   %eax,%eax
  je     L124
L88:
  test   %ecx,%ecx
  je     L304
  movslq %eax,%rcx
  mov    0x8(%rdx),%rsi
  mov    %rcx,%rdx
  lea    -0x4(%rsi,%rcx,4),%rcx
  lea    -0x1(%rdi,%rdx,1),%rdx
  movzbl (%rcx),%esi
  cmp    $0x1,%eax
  jle    L22
  test   %sil,%sil
  jne    L22
L57:
  sub    $0x1,%rdx
  movb   $0x0,0x1(%rdx)
  sub    $0x1,%rcx
  sub    $0x1,%eax
  movzbl (%rcx),%esi
  cmp    $0x1,%eax
  jle    L22
  test   %sil,%sil
  je     L57
L22:
  neg    %esi
  mov    %sil,(%rdx)
  cmp    $0x1,%eax
  jle    L258
  lea    -0x2(%rax),%eax
  mov    $0xfffffffffffffffe,%rdi
  sub    %rax,%rdi
  mov    $0xffffffffffffffff,%rax
L26:
  movzbl (%rcx,%rax,1),%esi
  not    %esi
  mov    %sil,(%rdx,%rax,1)
  sub    $0x1,%rax
  cmp    %rdi,%rax
  jne    L26
  jmp    L258
L179:
  test   %ecx,%ecx
  je     L187
  cmp    $0x80,%eax
  jg     L99
  jne    L187
  cmp    $0x1,%ebp
  jle    L187
  lea    0x4(%rsi),%rax
  lea    -0x2(%rbp),%edi
  lea    0x8(%rsi,%rdi,4),%rsi
L272:
  cmpl   $0x0,(%rax)
  jne    L275
  add    $0x4,%rax
  cmp    %rsi,%rax
  jne    L272
  jmp    L187
L304:
  mov    0x8(%rdx),%rsi
  mov    %eax,%edx
  call   <memcpy@plt>
  jmp    L258
L195:
  mov    $0x0,%ebp
  jmp    L110
L89:
  mov    $0x1,%ebp
  jmp    L110
L130:
  test   %rsi,%rsi
  je     L89
  mov    (%rbx),%rdi
  mov    $0x1,%ebp
L124:
  movb   $0x0,(%rdi)
L258:
  movslq %ebp,%rax
  add    %rax,(%rbx)
L110:
  mov    %ebp,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  ret
L99:
  mov    $0xffffffff,%esi
  jmp    L120
L275:
  mov    $0xffffffff,%esi
  jmp    L120
```

assistant: ```c
int i2c_ASN1_INTEGER(ASN1_INTEGER *a, unsigned char **pp) {
  int pad = 0, ret, i, neg;
  unsigned char *p, *n, pb = 0;
  if (a == NULL)
    return (0);
  neg = a->type & V_ASN1_NEG;
  if (a->length == 0)
    ret = 1;
  else {
    ret = a->length;
    i = a->data[0];
    if (ret == 1 && i == 0)
      neg = 0;
    if (!neg && (i > 127)) {
      pad = 1;
      pb = 0;
    } else if (neg) {
      if (i > 128) {
        pad = 1;
        pb = 0xFF;
      } else if (i == 128) {
        for (i = 1; i < a->length; i++)
          if (a->data[i]) {
            pad = 1;
            pb = 0xFF;
            break;
          }
      }
    }
    ret += pad;
  }
  if (pp == NULL)
    return (ret);
  p = *pp;
  if (pad)
    *(p++) = pb;
  if (a->length == 0)
    *(p++) = 0;
  else if (!neg)
    memcpy(p, a->data, (unsigned int)a->length);
  else {
    n = a->data + a->length - 1;
    p += a->length - 1;
    i = a->length;
    while (!*n && i > 1) {
      *(p--) = 0;
      n--;
      i--;
    }
    *(p--) = ((*(n--)) ^ 0xff) + 1;
    i--;
    for (; i > 0; i--)
      *(p--) = *(n--) ^ 0xff;
  }
  *pp += ret;
  return (ret);
}
```