user: 这段汇编代码用C语言表示是什么样的：

```asm
<get_pci_dev_from_netdev>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x530,%rsp
  mov    %rdi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x528(%rsp)
  xor    %eax,%eax
  lea    0x18(%rsp),%rdi
  mov    %rbx,%rcx
  lea    D15(%rip),%rdx
  lea    D31(%rip),%rsi
  call   <asprintf@plt>
  cmp    $0xffffffff,%eax
  je     L15
  lea    0x120(%rsp),%rsi
  mov    $0x3ff,%edx
  mov    0x18(%rsp),%rdi
  call   <readlink@plt>
  mov    %eax,%ebp
  mov    0x18(%rsp),%rdi
  call   <free@plt>
  cmp    $0xffffffff,%ebp
  je     L124
L26:
  lea    D32(%rip),%rbp
L98:
  lea    0x120(%rsp),%rdi
  mov    $0x2f,%esi
  call   <strrchr@plt>
  mov    %rax,%rbx
  test   %rax,%rax
  je     L125
  lea    0x8(%rsp),%rcx
  lea    0x4(%rsp),%rdx
  lea    0x1(%rax),%rdi
  mov    %rsp,%r9
  lea    0xc(%rsp),%r8
  mov    %rbp,%rsi
  call   <sscanf@plt>
  cmp    $0x4,%eax
  je     L125
  movb   $0x0,(%rbx)
  lea    0x120(%rsp),%rax
  cmp    %rax,%rbx
  ja     L98
L125:
  lea    0x10(%rsp),%rdi
  mov    (%rsp),%r9d
  mov    0xc(%rsp),%r8d
  mov    0x8(%rsp),%ecx
  mov    0x4(%rsp),%edx
  lea    D59(%rip),%rsi
  mov    $0x0,%eax
  call   <asprintf@plt>
  cmp    $0xffffffff,%eax
  mov    $0x0,%eax
  cmovne 0x10(%rsp),%rax
L61:
  mov    0x528(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L8
  add    $0x530,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L124:
  mov    $0x2e,%esi
  mov    %rbx,%rdi
  call   <strchr@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L76
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %rax,%rbp
  mov    %r12,%rdi
  call   <strlen@plt>
  sub    %rax,%rbp
  cmp    $0xff,%rbp
  ja     L76
  lea    0x20(%rsp),%rdi
  mov    $0xff,%edx
  mov    %rbx,%rsi
  call   <strncpy@plt>
  cmpb   $0x0,0x20(%rsp,%rbp,1)
  je     L108
  movb   $0x0,0x20(%rsp,%rbp,1)
L108:
  lea    0x18(%rsp),%rdi
  lea    0x20(%rsp),%r8
  mov    %rbx,%rcx
  lea    D15(%rip),%rdx
  lea    D14(%rip),%rsi
  mov    $0x0,%eax
  call   <asprintf@plt>
  cmp    $0xffffffff,%eax
  je     L76
  lea    0x120(%rsp),%rsi
  mov    $0x3ff,%edx
  mov    0x18(%rsp),%rdi
  call   <readlink@plt>
  mov    %eax,%ebx
  mov    0x18(%rsp),%rdi
  call   <free@plt>
  cmp    $0xffffffff,%ebx
  jne    L26
L76:
  mov    $0x0,%eax
  jmp    L61
L15:
  mov    $0x0,%eax
  jmp    L61
L8:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: tag: D15
type_guessed: string
name: disassemble_data
arguments: tag: D31
type_guessed: string
name: disassemble_data
arguments: tag: D32
type_guessed: string
name: disassemble_data
arguments: tag: D59
type_guessed: string
name: disassemble_data
arguments: tag: D14
type_guessed: string

tool: D15: /sys/class/net

tool: D31: %s/%s/device

tool: D32: %x:%x:%x.%x

tool: D59: %04x:%02x:%02x.%x

tool: D14: %s/%s/lower_%s

assistant: ```c
char *get_pci_dev_from_netdev(const char *netdev) {
  char buf[1024];
  char *pcidev;
  char *path;
  char *cp;
  int func;
  int dom;
  int bus;
  int dev;
  int ret;
  ret = asprintf(&path, "%s/%s/device", "/sys/class/net", netdev);
  if (ret == -1)
    return NULL;
  ret = readlink(path, buf, sizeof(buf) - 1);
  free(path);
  if (ret == -1) {
    char realdev[256];
    char *subif;
    size_t len;
    subif = strchr(netdev, '.');
    if (!subif)
      return NULL;
    len = strlen(netdev) - strlen(subif);
    if (len > (sizeof(realdev) - 1))
      return NULL;
    strncpy(realdev, netdev, sizeof(realdev) - 1);
    if (realdev[len] != '\0')
      realdev[len] = '\0';
    ret = asprintf(&path, "%s/%s/lower_%s", "/sys/class/net", netdev, realdev);
    if (ret == -1)
      return NULL;
    ret = readlink(path, buf, sizeof(buf) - 1);
    free(path);
    if (ret == -1)
      return NULL;
  }
  do {
    cp = strrchr(buf, '/');
    if (!cp)
      break;
    ret = sscanf(cp + 1, "%x:%x:%x.%x", &dom, &bus, &dev, &func);
    if (ret == 4)
      break;
    *cp = '\0';
  } while (cp && cp > buf);
  ret = asprintf(&pcidev, "%04x:%02x:%02x.%x", dom, bus, dev, func);
  if (ret == -1)
    return NULL;
  return pcidev;
}
```