user: What is the c source code of the assembly code below:

```asm
<test_repblock>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %esi,%ecx
  mov    %edx,%eax
  mov    %ecx,%edx
  mov    %dl,-0x3c(%rbp)
  mov    %al,-0x40(%rbp)
  mov    $0x80,%edi
  call   <malloc@plt>
  mov    %rax,-0x28(%rbp)
  mov    $0x80,%edi
  call   <malloc@plt>
  mov    %rax,-0x20(%rbp)
  mov    $0x80,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rax
  lea    D5(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    -0x20(%rbp),%rax
  lea    D5(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  mov    -0x18(%rbp),%rax
  lea    D5(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcpy@plt>
  movsbl -0x40(%rbp),%ecx
  movsbl -0x3c(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <old_str_repblock@plt>
  mov    -0x10(%rbp),%rax
  mov    -0x8(%rbp),%rdx
  sub    %rdx,%rax
  mov    %rax,%rcx
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdx
  mov    %rcx,%rsi
  lea    D30(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  movsbl -0x40(%rbp),%ecx
  movsbl -0x3c(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <new_str_repblock@plt>
  mov    -0x10(%rbp),%rax
  mov    -0x8(%rbp),%rdx
  sub    %rdx,%rax
  mov    %rax,%rcx
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdx
  mov    %rcx,%rsi
  lea    D18(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  movsbl -0x40(%rbp),%ecx
  movsbl -0x3c(%rbp),%edx
  mov    -0x38(%rbp),%rsi
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <asm_str_repblock@plt>
  mov    -0x10(%rbp),%rax
  mov    -0x8(%rbp),%rdx
  sub    %rdx,%rax
  mov    %rax,%rcx
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdx
  mov    %rcx,%rsi
  lea    D36(%rip),%rax
  mov    %rax,%rdi
  call   <printf@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  nop
  leave
  ret
```

tool_calls: name: unpack_data
arguments: data_tag: D5
type_infered: string
name: unpack_data
arguments: data_tag: D30
type_infered: string
name: unpack_data
arguments: data_tag: D18
type_infered: string
name: unpack_data
arguments: data_tag: D36
type_infered: string

tool: D5: qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq

tool: D30: old - (%5llu cycles) %s


tool: D18: new - (%5llu cycles) %s


tool: D36: asm - (%5llu cycles) %s


assistant: ```c
void test_repblock(char *cmp, char find, char rep) {
  char *o1 = malloc(128);
  char *o2 = malloc(128);
  char *o3 = malloc(128);
  strcpy(o1, "qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq");
  strcpy(o2, "qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq");
  strcpy(o3, "qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq");
  uint64_t t1, t2;
  0;
  old_str_repblock(o1, cmp, find, rep);
  0;
  printf("old - (%5llu cycles) %s\n", (long long unsigned int)t2 - t1, o1);
  0;
  new_str_repblock(o2, cmp, find, rep);
  0;
  printf("new - (%5llu cycles) %s\n", (long long unsigned int)t2 - t1, o2);
  0;
  asm_str_repblock(o3, cmp, find, rep);
  0;
  printf("asm - (%5llu cycles) %s\n", (long long unsigned int)t2 - t1, o3);
  free(o1);
  free(o2);
  free(o3);
}
```