user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x48,%rsp
  mov    %rsi,0x18(%rsp)
  mov    %rdx,%r15
  mov    %fs:0x28,%rax
  mov    %rax,0x1038(%rsp)
  xor    %eax,%eax
  cmp    $0x2,%edi
  jle    L159
L23:
  lea    0x30(%rsp),%r12
  mov    $0x1000,%edx
  xor    %esi,%esi
  mov    %r12,%rdi
  call   <memset@plt>
  mov    0x18(%rsp),%rbx
  mov    $0x1000,%edx
  mov    %r12,%rdi
  mov    0x8(%rbx),%rsi
  call   <strncpy@plt>
  mov    0x10(%rbx),%rdi
  mov    %rbx,0x18(%rsp)
  call   <atoi@plt>
  mov    $0x1,%edi
  mov    %eax,%ebp
  call   <dup@plt>
  mov    %eax,0xc(%rsp)
  test   %ebp,%ebp
  jle    L91
  mov    %ebp,%r14d
  xor    %ebx,%ebx
  lea    0x28(%rsp),%r13
  sub    $0x1,%r14d
  je     L173
  mov    0x18(%rsp),%rax
  add    $0x8,%rax
  mov    %rax,0x10(%rsp)
  jmp    L85
  cs nopw 0x0(%rax,%rax,1)
L6:
  mov    $0x1,%edi
  call   <close@plt>
  mov    $0x1,%esi
  cmp    %r14d,%ebx
  jge    L222
  mov    0x2c(%rsp),%edi
  call   <dup2@plt>
L97:
  mov    0x10(%rsp),%rsi
  mov    %r15,%rdx
  mov    %r12,%rdi
  add    $0x1,%ebx
  call   <execve@plt>
  mov    %r12,%rsi
  lea    D31(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  cmp    %r14d,%ebx
  jge    L100
L85:
  mov    %r13,%rdi
  call   <pipe@plt>
  test   %eax,%eax
  js     L186
L189:
  xor    %eax,%eax
  call   <fork@plt>
  test   %rax,%rax
  je     L6
  xor    %edi,%edi
  add    $0x1,%ebx
  call   <close@plt>
  mov    0x28(%rsp),%edi
  xor    %esi,%esi
  call   <dup2@plt>
  mov    0x28(%rsp),%edi
  call   <close@plt>
  mov    0x2c(%rsp),%edi
  call   <close@plt>
  cmp    %r14d,%ebx
  jl     L85
L100:
  cmp    %ebx,%ebp
  jle    L27
L173:
  mov    0x18(%rsp),%rax
  add    $0x8,%rax
  mov    %rax,0x10(%rsp)
  jmp    L55
  nopl   0x0(%rax)
L98:
  mov    $0x1,%edi
  call   <close@plt>
  mov    $0x1,%esi
  cmp    %r14d,%ebx
  jge    L74
  mov    0x2c(%rsp),%edi
  call   <dup2@plt>
L214:
  mov    0x10(%rsp),%rsi
  mov    %r15,%rdx
  mov    %r12,%rdi
  add    $0x1,%ebx
  call   <execve@plt>
  mov    %r12,%rsi
  lea    D31(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  cmp    %ebx,%ebp
  jle    L27
L55:
  mov    %r13,%rdi
  call   <pipe@plt>
  test   %eax,%eax
  js     L206
L58:
  xor    %eax,%eax
  call   <fork@plt>
  test   %rax,%rax
  je     L98
  xor    %edi,%edi
  add    $0x1,%ebx
  call   <close@plt>
  mov    0x28(%rsp),%edi
  call   <close@plt>
  mov    0x2c(%rsp),%edi
  call   <close@plt>
  cmp    %ebx,%ebp
  jg     L55
L27:
  mov    $0x1,%edi
  xor    %ebx,%ebx
  lea    0x24(%rsp),%r12
  call   <close@plt>
  mov    0xc(%rsp),%edi
  mov    $0x1,%esi
  call   <dup2@plt>
  cs nopw 0x0(%rax,%rax,1)
L133:
  mov    %r12,%rdi
  add    $0x1,%ebx
  call   <wait@plt>
  cmp    %ebx,%ebp
  jne    L133
L95:
  xor    %edi,%edi
  call   <exit@plt>
  mov    0x1038(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L203
  add    $0x1048,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L186:
  lea    D46(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L189
  nopl   0x0(%rax,%rax,1)
L222:
  mov    0xc(%rsp),%edi
  call   <dup2@plt>
  mov    0x2c(%rsp),%edi
  call   <close@plt>
  jmp    L97
  nop
L206:
  lea    D46(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L58
  nopl   0x0(%rax,%rax,1)
L74:
  mov    0xc(%rsp),%edi
  call   <dup2@plt>
  mov    0x2c(%rsp),%edi
  call   <close@plt>
  jmp    L214
L159:
  lea    D29(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L23
L91:
  mov    $0x1,%edi
  call   <close@plt>
  mov    0xc(%rsp),%edi
  mov    $0x1,%esi
  call   <dup2@plt>
  jmp    L95
L203:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: data_tag: D31
datatype: string
name: disassemble_data
arguments: data_tag: D46
datatype: string
name: disassemble_data
arguments: data_tag: D29
datatype: string

tool: D31: parent error: %s didn't exec


tool: D46: error creating pipe

tool: D29: usage: pipe-4 executable-file number-of-procs

assistant: ```c
int main(int argc, char **argv, char **envp) {
  pid_t child_id;
  int child_status;
  int pipe_desc[2];
  char read_buffer[4096];
  int err;
  char file_name[4096];
  int proc_count;
  int i;
  int last_stdout;
  if (argc < 3) {
    printf("usage: pipe-4 executable-file number-of-procs\n");
    exit(1);
  }
  memset(file_name, 0, sizeof(file_name));
  strncpy(file_name, argv[1], sizeof(file_name));
  proc_count = atoi(argv[2]);
  last_stdout = dup(1);
  for (i = 0; i < proc_count; i++) {
    err = pipe(pipe_desc);
    if (err < 0) {
      printf("error creating pipe\n");
      exit(1);
    }
    child_id = fork();
    if (child_id == 0) {
      close(1);
      if (i < (proc_count - 1)) {
        dup2(pipe_desc[1], 1);
      } else {
        dup2(last_stdout, 1);
        close(pipe_desc[1]);
      }
      err = execve(file_name, &argv[1], envp);
      printf("parent error: %s didn't exec\n", file_name);
      exit(1);
    } else {
      close(0);
      if (i < (proc_count - 1)) {
        dup2(pipe_desc[0], 0);
      }
      close(pipe_desc[0]);
      close(pipe_desc[1]);
    }
  }
  close(1);
  dup2(last_stdout, 1);
  for (i = 0; i < proc_count; i++) {
    child_id = wait(&child_status);
  }
  exit(0);
}
```