user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %edi,-0x44(%rbp)
  mov    %rsi,-0x50(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x34(%rbp)
  lea    -0x20(%rbp),%rax
  mov    $0x14,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  cmpl   $0x3,-0x44(%rbp)
  jg     L65
  mov    $0x0,%eax
  call   <print_usage@plt>
  mov    $0x2,%edi
  call   <exit@plt>
L65:
  mov    -0x50(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D20(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L194
  cmpl   $0x4,-0x44(%rbp)
  je     L84
  mov    $0x0,%eax
  call   <print_usage@plt>
  mov    $0x2,%edi
  call   <exit@plt>
L84:
  movl   $0x1,-0x34(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x40(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rcx
  lea    -0x20(%rbp),%rax
  mov    $0x13,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncpy@plt>
  jmp    L255
L194:
  mov    -0x50(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D11(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L19
  cmpl   $0x5,-0x44(%rbp)
  je     L181
  mov    $0x0,%eax
  call   <print_usage@plt>
  mov    $0x2,%edi
  call   <exit@plt>
L181:
  movl   $0x2,-0x34(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x40(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x20,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x3c(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rcx
  lea    -0x20(%rbp),%rax
  mov    $0x13,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncpy@plt>
  jmp    L255
L19:
  mov    -0x50(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D12(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L239
  cmpl   $0x6,-0x44(%rbp)
  je     L16
  mov    $0x0,%eax
  call   <print_usage@plt>
  mov    $0x2,%edi
  call   <exit@plt>
L16:
  movl   $0x3,-0x34(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x40(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x20,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x3c(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x28,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <atoi@plt>
  mov    %eax,-0x38(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rcx
  lea    -0x20(%rbp),%rax
  mov    $0x13,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncpy@plt>
  jmp    L255
L239:
  mov    -0x50(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D40(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %eax,%eax
  jne    L255
  cmpl   $0x4,-0x44(%rbp)
  je     L107
  mov    $0x0,%eax
  call   <print_usage@plt>
  mov    $0x2,%edi
  call   <exit@plt>
L107:
  movl   $0x4,-0x34(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x2c(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rcx
  lea    -0x20(%rbp),%rax
  mov    $0x13,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncpy@plt>
  mov    -0x2c(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x28(%rbp)
  mov    -0x50(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rcx
  mov    -0x2c(%rbp),%edx
  mov    -0x28(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <strncpy@plt>
L255:
  cmpl   $0x0,-0x34(%rbp)
  jne    L14
  mov    $0x0,%eax
  call   <print_usage@plt>
  mov    $0x3,%edi
  call   <exit@plt>
L14:
  mov    $0x0,%edx
  mov    $0x0,%esi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <init_memshare@plt>
  cmpl   $0x4,-0x34(%rbp)
  je     L161
  cmpl   $0x4,-0x34(%rbp)
  jg     L67
  cmpl   $0x3,-0x34(%rbp)
  je     L23
  cmpl   $0x3,-0x34(%rbp)
  jg     L67
  cmpl   $0x1,-0x34(%rbp)
  je     L43
  cmpl   $0x2,-0x34(%rbp)
  je     L245
  jmp    L67
L43:
  mov    -0x40(%rbp),%edx
  lea    -0x20(%rbp),%rax
  mov    %edx,%esi
  mov    %rax,%rdi
  call   <signal1@plt>
  mov    %eax,-0x30(%rbp)
  jmp    L234
L245:
  mov    -0x3c(%rbp),%edx
  mov    -0x40(%rbp),%ecx
  lea    -0x20(%rbp),%rax
  mov    %ecx,%esi
  mov    %rax,%rdi
  call   <signal2@plt>
  mov    %eax,-0x30(%rbp)
  jmp    L234
L23:
  mov    -0x38(%rbp),%ecx
  mov    -0x3c(%rbp),%edx
  mov    -0x40(%rbp),%esi
  lea    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <signal3@plt>
  mov    %eax,-0x30(%rbp)
  jmp    L234
L161:
  mov    -0x2c(%rbp),%edx
  mov    -0x28(%rbp),%rcx
  lea    -0x20(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <data@plt>
  mov    %eax,-0x30(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  jmp    L234
L67:
  nop
L234:
  cmpl   $0x0,-0x30(%rbp)
  jne    L211
  mov    $0x0,%edi
  call   <exit@plt>
L211:
  cmpl   $0x1,-0x30(%rbp)
  jne    L82
  lea    -0x20(%rbp),%rax
  mov    %rax,%rsi
  lea    D3(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L82:
  mov    $0x2,%edi
  call   <exit@plt>
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L182
  call   <__stack_chk_fail@plt>
L182:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_label: D20
type_guessed: string
name: read_data
arguments: data_label: D11
type_guessed: string
name: read_data
arguments: data_label: D12
type_guessed: string
name: read_data
arguments: data_label: D40
type_guessed: string
name: read_data
arguments: data_label: D18
type_guessed: string
name: read_data
arguments: data_label: D3
type_guessed: string

tool: D20: -s1

tool: D11: -s2

tool: D12: -s3

tool: D40: -d

tool: D18: memsend

tool: D3: The destination process %s is not present!


assistant: ```c
int main(int argc, char *argv[]) {
  int value1, value2, value3, mode = 0, retvalue, data_size;
  char dest_proc[20], *datastr;
  memset(dest_proc, '\0', 20);
  if (argc < 4) {
    print_usage();
    exit(2);
  }
  if (!strcmp(argv[1], "-s1")) {
    if (argc != 4) {
      print_usage();
      exit(2);
    }
    mode = 1;
    value1 = atoi(argv[3]);
    strncpy(dest_proc, argv[2], (20 - 1));
  } else if (!strcmp(argv[1], "-s2")) {
    if (argc != 5) {
      print_usage();
      exit(2);
    }
    mode = 2;
    value1 = atoi(argv[3]);
    value2 = atoi(argv[4]);
    strncpy(dest_proc, argv[2], (20 - 1));
  } else if (!strcmp(argv[1], "-s3")) {
    if (argc != 6) {
      print_usage();
      exit(2);
    }
    mode = 3;
    value1 = atoi(argv[3]);
    value2 = atoi(argv[4]);
    value3 = atoi(argv[5]);
    strncpy(dest_proc, argv[2], (20 - 1));
  } else if (!strcmp(argv[1], "-d")) {
    if (argc != 4) {
      print_usage();
      exit(2);
    }
    mode = 4;
    data_size = strlen(argv[3]);
    strncpy(dest_proc, argv[2], (20 - 1));
    datastr = malloc(data_size);
    strncpy(datastr, argv[3], data_size);
  }
  if (mode == 0) {
    print_usage();
    exit(3);
  }
  init_memshare("memsend", 0, 0);
  switch (mode) {
  case 1:
    retvalue = signal1(dest_proc, value1);
    break;
  case 2:
    retvalue = signal2(dest_proc, value1, value2);
    break;
  case 3:
    retvalue = signal3(dest_proc, value1, value2, value3);
    break;
  case 4:
    retvalue = data(dest_proc, datastr, data_size);
    free(datastr);
    break;
  default:
    break;
  }
  if (retvalue == 0)
    exit(0);
  if (retvalue == 1) {
    printf("The destination process %s is not present!\n", dest_proc);
    exit(1);
  }
  exit(2);
}
```