user: Translate the below assembly code into C programming language:

```asm
<fixed_xor>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x58,%rsp
  mov    %rdi,-0x78(%rbp)
  mov    %rsi,-0x80(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %rsp,%rax
  mov    %rax,%rbx
  mov    -0x78(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x58(%rbp)
  mov    -0x58(%rbp),%eax
  movslq %eax,%rdx
  sub    $0x1,%rdx
  mov    %rdx,-0x50(%rbp)
  movslq %eax,%rdx
  mov    %rdx,%r14
  mov    $0x0,%r15d
  movslq %eax,%rdx
  mov    %rdx,%r12
  mov    $0x0,%r13d
  cltq
  mov    $0x10,%edx
  sub    $0x1,%rdx
  add    %rdx,%rax
  mov    $0x10,%esi
  mov    $0x0,%edx
  div    %rsi
  imul   $0x10,%rax,%rax
  mov    %rax,%rcx
  and    $0xfffffffffffff000,%rcx
  mov    %rsp,%rdx
  sub    %rcx,%rdx
L34:
  cmp    %rdx,%rsp
  je     L22
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L34
L22:
  mov    %rax,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  mov    %rax,%rdx
  and    $0xfff,%edx
  test   %rdx,%rdx
  je     L82
  and    $0xfff,%eax
  sub    $0x8,%rax
  add    %rsp,%rax
  orq    $0x0,(%rax)
L82:
  mov    %rsp,%rax
  add    $0x0,%rax
  mov    %rax,-0x48(%rbp)
  movl   $0x0,-0x64(%rbp)
  jmp    L44
L77:
  mov    -0x64(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  sub    $0x30,%eax
  mov    %eax,-0x60(%rbp)
  mov    -0x64(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movsbl %al,%eax
  sub    $0x30,%eax
  mov    %eax,-0x5c(%rbp)
  cmpl   $0x9,-0x60(%rbp)
  jle    L53
  subl   $0x27,-0x60(%rbp)
L53:
  cmpl   $0x9,-0x5c(%rbp)
  jle    L88
  subl   $0x27,-0x5c(%rbp)
L88:
  mov    -0x60(%rbp),%eax
  xor    -0x5c(%rbp),%eax
  mov    %eax,-0x54(%rbp)
  mov    -0x54(%rbp),%eax
  add    $0x30,%eax
  mov    %al,-0x65(%rbp)
  cmpb   $0x39,-0x65(%rbp)
  jle    L76
  movzbl -0x65(%rbp),%eax
  add    $0x27,%eax
  mov    %al,-0x65(%rbp)
L76:
  mov    -0x48(%rbp),%rdx
  mov    -0x64(%rbp),%eax
  cltq
  movzbl -0x65(%rbp),%ecx
  mov    %cl,(%rdx,%rax,1)
  addl   $0x1,-0x64(%rbp)
L44:
  mov    -0x64(%rbp),%eax
  cmp    -0x58(%rbp),%eax
  jl     L77
  mov    -0x48(%rbp),%rdx
  mov    -0x58(%rbp),%eax
  cltq
  movb   $0x0,(%rdx,%rax,1)
  mov    -0x58(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x40(%rbp)
  mov    -0x48(%rbp),%rdx
  mov    -0x40(%rbp),%rax
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    -0x40(%rbp),%rax
  mov    %rbx,%rsp
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L15
  call   <__stack_chk_fail@plt>
L15:
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
```

assistant: ```c
char *fixed_xor(char *buffer1, char *buffer2) {
  int length = strlen(buffer1);
  char result[length];
  int i, b1, b2;
  for (i = 0; i < length; i++) {
    b1 = buffer1[i] - '0';
    b2 = buffer2[i] - '0';
    if (b1 >= 10)
      b1 -= 39;
    if (b2 >= 10)
      b2 -= 39;
    int hexNumber = (b1 ^ b2);
    char encodeCharater = hexNumber + '0';
    if (encodeCharater > 57)
      encodeCharater += 39;
    result[i] = encodeCharater;
  }
  result[length] = '\0';
  char *res = malloc(length);
  strcpy(res, result);
  return res;
}
```