user: 请从给定的汇编指令推导出C源代码：

```asm
<ber_string_test>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x88,%rsp
  mov    %rsi,%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x78(%rsp)
  xor    %eax,%eax
  lea    D64(%rip),%rax
  mov    %rax,0x50(%rsp)
  lea    D33(%rip),%rax
  mov    %rax,0x58(%rsp)
  lea    D0(%rip),%rax
  mov    %rax,0x60(%rsp)
  lea    D46(%rip),%rax
  mov    %rax,0x68(%rsp)
  lea    D52(%rip),%rdi
  call   <puts@plt>
  lea    0x50(%rsp),%rax
  mov    %rax,0x8(%rsp)
  lea    0x70(%rsp),%rax
  mov    %rax,0x28(%rsp)
  lea    0x3c(%rsp),%rax
  mov    %rax,0x20(%rsp)
  lea    0x40(%rsp),%rax
  mov    %rax,0x10(%rsp)
  mov    %r12,%r15
  jmp    L53
L54:
  mov    %rbx,%rsi
  mov    %r15,%rdi
  call   <ber_encode_string@plt>
  mov    %rax,(%rsp)
L0:
  mov    (%rsp),%rax
  lea    0x4(%rax),%rbp
  mov    0x20(%rsp),%rdx
  mov    0x10(%rsp),%rsi
  mov    %rbp,%rdi
  call   <ber_decode_string_len_buffer@plt>
  mov    %rax,%r14
  mov    %rbx,%rdi
  call   <strlen@plt>
  movslq 0x3c(%rsp),%rdx
  cmp    %rax,%rdx
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  mov    0x3c(%rsp),%edx
  mov    %rbx,%rsi
  mov    0x40(%rsp),%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  lea    0x4(%r15),%r13
  cmp    %r14,%r13
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  lea    0x48(%rsp),%rsi
  mov    $0x80,%edx
  mov    %rbp,%rdi
  call   <ber_decode_string_alloc@plt>
  mov    %rax,0x18(%rsp)
  mov    0x48(%rsp),%rdi
  call   <strlen@plt>
  mov    %rax,%r14
  mov    %rbx,%rdi
  call   <strlen@plt>
  cmp    %rax,%r14
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  mov    0x3c(%rsp),%edx
  mov    %rbx,%rsi
  mov    0x40(%rsp),%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  cmp    0x18(%rsp),%r13
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  mov    0x48(%rsp),%rdi
  call   <free@plt>
  lea    0x38(%rsp),%rcx
  mov    $0x80,%edx
  mov    0x10(%rsp),%rsi
  mov    %rbp,%rdi
  call   <ber_decode_string_buffer@plt>
  mov    %rax,0x18(%rsp)
  mov    0x40(%rsp),%rdi
  call   <strlen@plt>
  mov    %rax,%r14
  mov    %rbx,%rdi
  call   <strlen@plt>
  cmp    %rax,%r14
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  mov    0x3c(%rsp),%edx
  mov    %rbx,%rsi
  mov    0x40(%rsp),%rdi
  call   <strncmp@plt>
  test   %rax,%rax
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  cmp    0x18(%rsp),%r13
  sete   %dil
  movzbl %dil,%edi
  call   <assert@plt>
  add    $0x1,%r12d
  cmp    $0x2,%r12d
  je     L58
L44:
  test   %r12d,%r12d
  je     L54
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %rax,%rdx
  mov    %rbx,%rsi
  mov    %r15,%rdi
  call   <ber_encode_string_len@plt>
  mov    %rax,(%rsp)
  jmp    L0
L58:
  mov    %r15,%rdx
  sub    (%rsp),%rdx
  sar    $0x2,%rdx
  mov    %rbp,%rsi
  lea    D59(%rip),%rdi
  call   <hexdump@plt>
  addq   $0x8,0x8(%rsp)
  mov    0x8(%rsp),%rax
  cmp    0x28(%rsp),%rax
  je     L65
L53:
  mov    0x8(%rsp),%rax
  mov    (%rax),%rbx
  mov    %rbx,%rsi
  lea    D1(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0x0,%r12d
  jmp    L44
L65:
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    0x78(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L45
  add    $0x88,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L45:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_tag: D64
datatype: string
name: retrieve_data
arguments: data_tag: D33
datatype: string
name: retrieve_data
arguments: data_tag: D0
datatype: string
name: retrieve_data
arguments: data_tag: D46
datatype: string
name: retrieve_data
arguments: data_tag: D52
datatype: string
name: retrieve_data
arguments: data_tag: D59
datatype: string
name: retrieve_data
arguments: data_tag: D1
datatype: string

tool: D64: a

tool: D33: ab

tool: D0: test123

tool: D46: testing_longer_name

tool: D52: # Testing BER string coding

tool: 

tool: D1: ber_encode_string("%s")

assistant: ```c
void ber_string_test(uint8_t *buf, uint8_t *buf_end) {
  uint8_t *enc_out, *dec_out;
  const char *values[] = {"a", "ab", "test123", "testing_longer_name"};
  const char *str;
  char *astr;
  uint8_t next;
  uint32_t i, enc_method, str_len;
  printf("# Testing BER string coding\n");
  for (i = 0; i < sizeof(values) / sizeof(values[0]); ++i) {
    printf("ber_encode_string(\"%s\")", values[i]);
    for (enc_method = 0; enc_method < 2; ++enc_method) {
      if (enc_method == 0) {
        enc_out = ber_encode_string(buf_end, values[i]);
      } else {
        enc_out = ber_encode_string_len(buf_end, values[i], strlen(values[i]));
      }
      dec_out = ber_decode_string_len_buffer(enc_out + 1, &str, &str_len);
      assert(str_len == strlen(values[i]));
      assert(strncmp(str, values[i], str_len) == 0);
      assert(dec_out == buf_end + 1);
      dec_out = ber_decode_string_alloc(enc_out + 1, &astr, 128);
      assert(strlen(astr) == strlen(values[i]));
      assert(strncmp(str, values[i], str_len) == 0);
      assert(dec_out == buf_end + 1);
      free(astr);
      dec_out = ber_decode_string_buffer(enc_out + 1, &str, 128, &next);
      assert(strlen(str) == strlen(values[i]));
      assert(strncmp(str, values[i], str_len) == 0);
      assert(dec_out == buf_end + 1);
    }
    hexdump("", enc_out + 1, buf_end - enc_out);
  }
  printf("\n");
}
```