user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rsi,%rbx
  cmp    $0x4,%edi
  jne    L44
L60:
  mov    0x8(%rbx),%rdi
  lea    D28(%rip),%rsi
  call   <fopen@plt>
  mov    %rax,%r13
  test   %rax,%rax
  je     L73
L17:
  mov    0x10(%rbx),%rdi
  lea    D10(%rip),%rsi
  call   <fopen@plt>
  mov    %rax,%r12
  test   %rax,%rax
  je     L52
L41:
  mov    0x18(%rbx),%rdi
  mov    $0x0,%edx
  mov    $0x0,%esi
  call   <strtol@plt>
  mov    %eax,%ebx
  test   %eax,%eax
  js     L50
L30:
  mov    %ebx,%edx
  mov    %ebx,%esi
  lea    D18(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %ebx,%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  jne    L80
  lea    D35(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L80
L44:
  mov    (%rsi),%rsi
  lea    D54(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L60
L73:
  mov    0x8(%rbx),%rsi
  lea    D36(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L17
L52:
  mov    0x10(%rbx),%rsi
  lea    D36(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L41
L50:
  lea    D35(%rip),%rdi
  call   <puts@plt>
  mov    $0x1,%edi
  call   <exit@plt>
  jmp    L30
L59:
  mov    %r12,%rcx
  mov    $0x1,%esi
  mov    %rbp,%rdi
  call   <fwrite@plt>
L80:
  mov    %r13,%rcx
  mov    %ebx,%edx
  mov    $0x1,%esi
  mov    %rbp,%rdi
  call   <fread@plt>
  mov    %eax,%edx
  cmp    %eax,%ebx
  je     L59
  mov    %ebx,%eax
  sub    %edx,%eax
  movslq %edx,%rdi
  add    %rbp,%rdi
  mov    %eax,%edx
  mov    $0xff,%esi
  call   <memset@plt>
  mov    %r12,%rcx
  mov    %ebx,%edx
  mov    $0x1,%esi
  mov    %rbp,%rdi
  call   <fwrite@plt>
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %r13,%rdi
  call   <fclose@plt>
  mov    %r12,%rdi
  call   <fclose@plt>
  mov    $0x0,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

tool_calls: name: retrieve_data
arguments: tag: D28
type_infered: string
name: retrieve_data
arguments: tag: D10
type_infered: string
name: retrieve_data
arguments: tag: D18
type_infered: string
name: retrieve_data
arguments: tag: D35
type_infered: string
name: retrieve_data
arguments: tag: D54
type_infered: string
name: retrieve_data
arguments: tag: D36
type_infered: string

tool: D28: rb

tool: D10: wb

tool: D18: blocksize = %d (0x%0x)


tool: D35: Error in blocksize

tool: D54: usage: %s InputFile PaddedFile BlockSize


tool: D36: Error opening %s


assistant: ```c
int main(int argc, char *argv[]) {
  FILE *fin, *fout;
  char *buf;
  int n;
  int blocksize;
  if (argc != 4) {
    printf("usage: %s InputFile PaddedFile BlockSize\n", argv[0]);
    exit(1);
  }
  fin = fopen(argv[1], "rb");
  if (fin == NULL) {
    printf("Error opening %s\n", argv[1]);
    exit(1);
  }
  fout = fopen(argv[2], "wb");
  if (fout == NULL) {
    printf("Error opening %s\n", argv[2]);
    exit(1);
  }
  blocksize = strtol(argv[3], NULL, 0);
  if (blocksize < 0) {
    printf("Error in blocksize\n");
    exit(1);
  }
  printf("blocksize = %d (0x%0x)\n", blocksize, blocksize);
  buf = (char *)malloc(blocksize);
  if (buf == NULL) {
    printf("Error in blocksize\n");
    exit(1);
  }
  while ((n = fread(buf, sizeof(char), blocksize, fin)) == blocksize) {
    fwrite(buf, sizeof(char), blocksize, fout);
  }
  memset(buf + n, 0xff, blocksize - n);
  fwrite(buf, sizeof(char), blocksize, fout);
  free(buf);
  fclose(fin);
  fclose(fout);
  return 0;
}
```