user: 下面的汇编指令对应的C源代码是什么：

```asm
<main>:
  endbr64
  push   %r12
  push   %rbp
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  call   <fork@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  js     L96
  lea    0x4(%rsp),%r12
  je     L162
L1:
  mov    $0x3,%edi
  call   <sleep@plt>
  mov    %rbp,%rdi
  call   <show_pstree@plt>
  mov    %r12,%rdi
  call   <wait@plt>
  mov    0x4(%rsp),%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  mov    0x8(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L140
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbp
  pop    %r12
  ret
L162:
  lea    D97(%rip),%rdi
  call   <printf@plt>
  lea    D111(%rip),%rdi
  call   <change_pname@plt>
  xor    %eax,%eax
  call   <fork@plt>
  test   %rax,%rax
  js     L116
  je     L63
L151:
  xor    %eax,%eax
  call   <fork@plt>
  test   %rax,%rax
  js     L101
  je     L62
L87:
  lea    D105(%rip),%rdi
  call   <printf@plt>
  mov    %r12,%rdi
  call   <wait@plt>
  mov    0x4(%rsp),%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  mov    %r12,%rdi
  call   <wait@plt>
  mov    0x4(%rsp),%esi
  mov    %rax,%rdi
  mov    %rax,%rbp
  call   <explain_wait_status@plt>
  lea    D188(%rip),%rdi
  call   <printf@plt>
  mov    $0x10,%edi
  call   <exit@plt>
  jmp    L1
L96:
  lea    D165(%rip),%rdi
  lea    0x4(%rsp),%r12
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L1
L62:
  lea    D133(%rip),%rdi
  call   <change_pname@plt>
  lea    D27(%rip),%rdi
  call   <printf@plt>
  lea    D194(%rip),%rdi
  call   <printf@plt>
  mov    $0xa,%edi
  call   <sleep@plt>
  lea    D7(%rip),%rdi
  call   <printf@plt>
  mov    $0x11,%edi
  call   <exit@plt>
  jmp    L87
L63:
  lea    D33(%rip),%rdi
  call   <change_pname@plt>
  lea    D9(%rip),%rdi
  call   <printf@plt>
  xor    %eax,%eax
  call   <fork@plt>
  test   %rax,%rax
  js     L97
  je     L114
L45:
  lea    D137(%rip),%rdi
  lea    0x4(%rsp),%r12
  call   <printf@plt>
  mov    %r12,%rdi
  call   <wait@plt>
  mov    0x4(%rsp),%esi
  mov    %rax,%rdi
  call   <explain_wait_status@plt>
  lea    D11(%rip),%rdi
  call   <printf@plt>
  mov    $0x13,%edi
  call   <exit@plt>
  jmp    L151
L101:
  lea    D49(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L87
L116:
  lea    D49(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L151
L114:
  lea    D130(%rip),%rdi
  call   <change_pname@plt>
  lea    D84(%rip),%rdi
  call   <printf@plt>
  lea    D116(%rip),%rdi
  call   <printf@plt>
  mov    $0xa,%edi
  call   <sleep@plt>
  lea    D73(%rip),%rdi
  call   <printf@plt>
  mov    $0xd,%edi
  call   <exit@plt>
  jmp    L45
L97:
  lea    D126(%rip),%rdi
  call   <perror@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L45
L140:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_tag: D97
datatype: string
name: disassemble_data
arguments: data_tag: D111
datatype: string
name: disassemble_data
arguments: data_tag: D105
datatype: string
name: disassemble_data
arguments: data_tag: D188
datatype: string
name: disassemble_data
arguments: data_tag: D165
datatype: string
name: disassemble_data
arguments: data_tag: D133
datatype: string
name: disassemble_data
arguments: data_tag: D27
datatype: string
name: disassemble_data
arguments: data_tag: D194
datatype: string
name: disassemble_data
arguments: data_tag: D7
datatype: string
name: disassemble_data
arguments: data_tag: D33
datatype: string
name: disassemble_data
arguments: data_tag: D9
datatype: string
name: disassemble_data
arguments: data_tag: D137
datatype: string
name: disassemble_data
arguments: data_tag: D11
datatype: string
name: disassemble_data
arguments: data_tag: D49
datatype: string
name: disassemble_data
arguments: data_tag: D130
datatype: string
name: disassemble_data
arguments: data_tag: D84
datatype: string
name: disassemble_data
arguments: data_tag: D116
datatype: string
name: disassemble_data
arguments: data_tag: D73
datatype: string
name: disassemble_data
arguments: data_tag: D126
datatype: string

tool: D97: A created! 


tool: D111: A

tool: D105: A: Waiting... 


tool: D188: A: Exiting...


tool: D165: main: fork

tool: D133: C

tool: D27: C created! 


tool: D194: C: Sleeping...


tool: D7: C: Exiting...


tool: D33: B

tool: D9: B created! 


tool: D137: B: Waiting... 


tool: D11: B: Exiting...


tool: D49: A: fork

tool: D130: D

tool: D84: D created! 


tool: D116: D: Sleeping...


tool: D73: D: Exiting...


tool: D126: B: fork

assistant: ```c
int main(void) {
  pid_t pid;
  int status;
  pid = fork();
  if (pid < 0) {
    perror("main: fork");
    exit(1);
  }
  if (pid == 0) {
    printf("A created! \n");
    change_pname("A");
    pid = fork();
    if (pid < 0) {
      perror("A: fork");
      exit(1);
    }
    if (pid == 0) {
      change_pname("B");
      printf("B created! \n");
      pid = fork();
      if (pid < 0) {
        perror("B: fork");
        exit(1);
      }
      if (pid == 0) {
        change_pname("D");
        printf("D created! \n");
        printf("D: Sleeping...\n");
        sleep(10);
        printf("D: Exiting...\n");
        exit(13);
      }
      printf("B: Waiting... \n");
      pid = wait(&status);
      explain_wait_status(pid, status);
      printf("B: Exiting...\n");
      exit(19);
    }
    pid = fork();
    if (pid < 0) {
      perror("A: fork");
      exit(1);
    }
    if (pid == 0) {
      change_pname("C");
      printf("C created! \n");
      printf("C: Sleeping...\n");
      sleep(10);
      printf("C: Exiting...\n");
      exit(17);
    }
    printf("A: Waiting... \n");
    pid = wait(&status);
    explain_wait_status(pid, status);
    pid = wait(&status);
    explain_wait_status(pid, status);
    printf("A: Exiting...\n");
    exit(16);
  }
  sleep(3);
  show_pstree(pid);
  pid = wait(&status);
  explain_wait_status(pid, status);
  return 0;
}
```