user: Please show me the C implementation that matches the assembly code listed below:

```asm
<allocate_huge_page>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x34(%rbp)
  movl   $0xffffffff,-0x24(%rbp)
  mov    D71(%rip),%rax
  mov    (%rax),%rax
  mov    %rax,-0x18(%rbp)
  mov    D71(%rip),%rax
  mov    (%rax),%rax
  mov    %rax,-0x20(%rbp)
  mov    D87(%rip),%rax
  mov    (%rax),%edx
  mov    D128(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D82(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D125(%rip),%rax
  mov    (%rax),%eax
  or     %eax,%edx
  mov    D57(%rip),%rax
  mov    (%rax),%eax
  mov    -0x34(%rbp),%ecx
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <shmget@plt>
  mov    %eax,-0x24(%rbp)
  mov    -0x24(%rbp),%eax
  mov    $0x0,%edx
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <shmat@plt>
  mov    %rax,-0x18(%rbp)
  mov    D71(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,-0x18(%rbp)
  je     L22
  mov    -0x34(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <mlock@plt>
  test   %rax,%rax
  jne    L106
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <virtual_to_physical@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L28
  movabs $0x500000000000,%rax
  or     -0x10(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x8(%rbp),%rcx
  mov    -0x24(%rbp),%eax
  mov    $0x0,%edx
  mov    %rcx,%rsi
  mov    %eax,%edi
  call   <shmat@plt>
  mov    %rax,-0x20(%rbp)
  mov    D71(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,-0x20(%rbp)
  je     L92
  mov    -0x34(%rbp),%edx
  mov    -0x20(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <mlock@plt>
  test   %rax,%rax
  jne    L111
  mov    -0x34(%rbp),%edx
  mov    -0x20(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <shmdt@plt>
  mov    D61(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x24(%rbp),%eax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <shmctl@plt>
  mov    -0x20(%rbp),%rax
  jmp    L68
L22:
  nop
  jmp    L8
L106:
  nop
  jmp    L8
L28:
  nop
  jmp    L8
L92:
  nop
  jmp    L8
L111:
  nop
L8:
  mov    D71(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,-0x18(%rbp)
  je     L1
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <shmdt@plt>
L1:
  mov    D71(%rip),%rax
  mov    (%rax),%rax
  cmp    %rax,-0x20(%rbp)
  je     L36
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <shmdt@plt>
L36:
  cmpl   $0xffffffff,-0x24(%rbp)
  je     L23
  mov    D61(%rip),%rax
  mov    (%rax),%ecx
  mov    -0x24(%rbp),%eax
  mov    $0x0,%edx
  mov    %ecx,%esi
  mov    %eax,%edi
  call   <shmctl@plt>
L23:
  mov    $0x0,%eax
L68:
  leave
  ret
```

assistant: ```c
void *allocate_huge_page(int size) {
  int shmid = -1;
  uintptr_t physical_address, virtual_address;
  void *tmpptr = MAP_FAILED;
  void *realptr = MAP_FAILED;
  shmid = shmget(IPC_PRIVATE, size, SHM_HUGETLB | IPC_CREAT | SHM_R | SHM_W);
  tmpptr = shmat(shmid, NULL, 0);
  if (tmpptr == MAP_FAILED) {
    goto fail;
  }
  if (mlock(tmpptr, size) != 0) {
    goto fail;
  }
  physical_address = virtual_to_physical(tmpptr);
  if (physical_address == 0) {
    goto fail;
  }
  virtual_address = physical_address | 0x500000000000ULL;
  realptr = shmat(shmid, (void *)virtual_address, 0);
  if (realptr == MAP_FAILED) {
    goto fail;
  }
  if (mlock(realptr, size) != 0) {
    goto fail;
  }
  memset(realptr, 0, size);
  shmdt(tmpptr);
  shmctl(shmid, IPC_RMID, 0);
  return realptr;
fail:
  if (tmpptr != MAP_FAILED) {
    shmdt(tmpptr);
  }
  if (realptr != MAP_FAILED) {
    shmdt(realptr);
  }
  if (shmid != -1) {
    shmctl(shmid, IPC_RMID, 0);
  }
  return NULL;
}
```