user: 下面的汇编指令对应的C源代码是什么：

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x848,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x2838(%rsp)
  xor    %eax,%eax
  mov    %edi,%ebp
  lea    D53(%rip),%rdi
  mov    %rsi,%rbx
  call   <puts@plt>
  cmp    $0x4,%ebp
  je     L85
  lea    D13(%rip),%rdi
  call   <puts@plt>
  lea    D15(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
L85:
  mov    0x8(%rbx),%rdx
  lea    0x30(%rsp),%r12
  lea    D78(%rip),%rbp
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <sprintf@plt>
  lea    D67(%rip),%rsi
  mov    %r12,%rdi
  call   <fopen@plt>
  mov    %rax,0x8(%rsp)
  test   %rax,%rax
  je     L116
L64:
  mov    0x10(%rbx),%rdx
  mov    %rbp,%rsi
  mov    %r12,%rdi
  call   <sprintf@plt>
  lea    D117(%rip),%rsi
  mov    %r12,%rdi
  call   <fopen@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  je     L90
L112:
  mov    0x18(%rbx),%rdi
  call   <atoi@plt>
  mov    %eax,%r14d
  lea    -0x1(%rax),%eax
  mov    %eax,0x14(%rsp)
  cmp    $0xf,%eax
  ja     L50
L92:
  lea    0x20(%rsp),%rax
  movl   $0x0,0x10(%rsp)
  lea    D1(%rip),%r13
  mov    %rax,(%rsp)
  movslq %r14d,%rax
  lea    0x1e(%rsp,%rax,1),%rax
  mov    %rax,0x18(%rsp)
  nopl   0x0(%rax,%rax,1)
L31:
  mov    0x8(%rsp),%rcx
  mov    (%rsp),%rdi
  mov    %r14d,%edx
  mov    $0x1,%esi
  call   <fread@plt>
  mov    %eax,%ebx
  cmp    %eax,%r14d
  jne    L70
  mov    0x14(%rsp),%eax
  test   %eax,%eax
  js     L98
  mov    (%rsp),%rcx
  mov    0x18(%rsp),%rbx
  movslq %eax,%r8
  mov    %eax,%eax
  lea    (%rcx,%r8,1),%r15
  sub    %rax,%rbx
  nopw   0x0(%rax,%rax,1)
L97:
  mov    %rbp,%rcx
  mov    $0x1,%edx
  mov    $0x1,%esi
  mov    %r15,%rdi
  call   <fwrite@plt>
  cmp    $0x1,%eax
  je     L45
  mov    %r13,%rdi
  mov    %r12,%rsi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xffffffff,%edi
  call   <exit@plt>
L45:
  sub    $0x1,%r15
  cmp    %rbx,%r15
  jne    L97
L98:
  addl   $0x1,0x10(%rsp)
  jmp    L31
  nopl   0x0(%rax)
L70:
  lea    D46(%rip),%rdi
  call   <puts@plt>
  mov    %ebx,%esi
  lea    D51(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    0x8(%rsp),%rdi
  call   <fclose@plt>
  mov    %rbp,%rdi
  call   <fclose@plt>
  mov    0x10(%rsp),%edx
  xor    %eax,%eax
  mov    %r12,%rsi
  lea    D61(%rip),%rdi
  imul   %r14d,%edx
  call   <printf@plt>
  mov    0x2838(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L67
  add    $0x2848,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L50:
  lea    D0(%rip),%rdi
  call   <puts@plt>
  or     $0xffffffff,%edi
  call   <exit@plt>
  jmp    L92
L90:
  mov    %r12,%rsi
  lea    D104(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L112
L116:
  mov    %r12,%rsi
  lea    D104(%rip),%rdi
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L64
L67:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_tag: D53
type: string
name: unpack_data
arguments: data_tag: D13
type: string
name: unpack_data
arguments: data_tag: D15
type: string
name: unpack_data
arguments: data_tag: D78
type: string
name: unpack_data
arguments: data_tag: D67
type: string
name: unpack_data
arguments: data_tag: D117
type: string
name: unpack_data
arguments: data_tag: D1
type: string
name: unpack_data
arguments: data_tag: D46
type: string
name: unpack_data
arguments: data_tag: D51
type: string
name: unpack_data
arguments: data_tag: D61
type: string
name: unpack_data
arguments: data_tag: D0
type: string
name: unpack_data
arguments: data_tag: D104
type: string

tool: D53: Aldebaro. March 10, 2009

tool: D13: Usage: <input_file> <output_file> <number_of_bytes_of_each_element>

tool: D15: Example: in.bin out.bin 4  (for swapping 4 bytes of floats)

tool: D78: %s

tool: D67: rb

tool: D117: wb

tool: D1: Error writing file: %s

tool: D46: End of file!

tool: D51: %d

tool: D61: Happy end. Wrote file %s with %d bytes.


tool: D0: The <number_of_bytes_of_each_element> must be in the range from 1 to 16!

tool: D104: Error opening file: %s

assistant: ```c
int main(int argc, char *argv[]) {
  FILE *inputFILEPointer, *outputFILEPointer;
  int numBytes, i, k, k2, counter;
  char x[16];
  char s[10240];
  puts("Aldebaro. March 10, 2009");
  if (argc != 4) {
    printf("Usage: <input_file> <output_file> <number_of_bytes_of_each_element>\n");
    printf("Example: in.bin out.bin 4  (for swapping 4 bytes of floats)\n");
    exit(1);
  }
  sprintf(s, "%s", argv[1]);
  inputFILEPointer = fopen(s, "rb");
  if (inputFILEPointer == NULL) {
    printf("Error opening file: %s", s);
    exit(1);
  }
  sprintf(s, "%s", argv[2]);
  outputFILEPointer = fopen(s, "wb");
  if (outputFILEPointer == NULL) {
    printf("Error opening file: %s", s);
    exit(1);
  }
  numBytes = atoi(argv[3]);
  if (numBytes < 1 || numBytes > 16) {
    puts("The <number_of_bytes_of_each_element> must be in the range from 1 to 16!");
    exit(-1);
  }
  counter = 0;
  do {
    k = fread(&x, 1, numBytes, inputFILEPointer);
    if (k != numBytes) {
      puts("End of file!");
      printf("%d", k);
      break;
    }
    for (i = numBytes - 1; i >= 0; i--) {
      k2 = fwrite(&x[i], 1, 1, outputFILEPointer);
      if (k2 != 1) {
        printf("Error writing file: %s", s);
        exit(-1);
      }
    }
    counter++;
  } while (k == numBytes);
  fclose(inputFILEPointer);
  fclose(outputFILEPointer);
  printf("Happy end. Wrote file %s with %d bytes.\n", s, numBytes * counter);
}
```