user: Demonstrate the C code that generates the assembly output below:

```asm
<ripetizioni>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %rdi,%r14
  mov    %rsi,%r13
  mov    $0x28,%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    $0xa,%edi
  call   <malloc@plt>
  mov    %rax,%rbx
  movzbl (%r14),%r8d
  test   %r8b,%r8b
  je     L228
  mov    %r8d,%ecx
  mov    $0x0,%edx
  movsbl %r8b,%r8d
  mov    $0x0,%r11d
  mov    $0x1,%r10d
  jmp    L96
L68:
  test   %r12d,%r12d
  js     L94
  lea    0x1(%r12),%edi
  mov    $0x0,%eax
  mov    %r11d,%r9d
  movsbl %cl,%esi
  jmp    L190
L86:
  add    $0x1,%rax
  cmp    %rax,%rdi
  je     L77
L190:
  cmp    %esi,0x0(%rbp,%rax,4)
  jne    L86
  addb   $0x1,(%rbx,%rax,1)
  mov    %r10d,%r9d
  jmp    L86
L77:
  test   %r9d,%r9d
  je     L94
L201:
  add    $0x1,%rdx
  movzbl (%r14,%rdx,1),%ecx
  test   %cl,%cl
  je     L228
L96:
  test   %edx,%edx
  jne    L68
  mov    %r8d,0x0(%rbp)
  movb   $0x1,(%rbx)
  mov    %edx,%r12d
  jmp    L201
L94:
  add    $0x1,%r12d
  movslq %r12d,%rax
  movsbl %cl,%ecx
  mov    %ecx,0x0(%rbp,%rax,4)
  movb   $0x1,(%rbx,%rax,1)
  jmp    L201
L228:
  movsbl (%rbx),%eax
  mov    %eax,0x0(%r13)
  test   %r12d,%r12d
  js     L101
  lea    0x1(%rbx),%rax
  mov    %r12d,%ecx
  add    %rax,%rcx
  jmp    L205
L47:
  add    $0x1,%rax
L205:
  cmp    %rcx,%rax
  je     L101
  movsbl (%rax),%edx
  cmp    0x0(%r13),%edx
  jle    L47
  mov    %edx,0x0(%r13)
  jmp    L47
L101:
  test   %r12d,%r12d
  jle    L142
  mov    0x0(%r13),%esi
  lea    -0x1(%r12),%ecx
  mov    $0x0,%eax
  mov    $0x0,%edi
  mov    $0x1,%r9d
  jmp    L206
L17:
  mov    0x0(%rbp,%rax,4),%edx
  movsbl %r15b,%r8d
  cmp    %r8d,%edx
  cmovl  %edx,%r15d
L150:
  lea    0x1(%rax),%rdx
  cmp    %rcx,%rax
  je     L142
  mov    %rdx,%rax
L206:
  movsbl (%rbx,%rax,1),%edx
  cmp    %edx,%esi
  jne    L150
  test   %edi,%edi
  jne    L17
  movzbl 0x0(%rbp,%rax,4),%r15d
  mov    %r9d,%edi
  jmp    L150
L142:
  mov    %rbp,%rdi
  call   <free@plt>
  mov    %rbx,%rdi
  call   <free@plt>
  mov    %r15d,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
char ripetizioni(char str[], int *rep) {
  int *item = (int *)malloc(sizeof(int) * 10);
  char *freq = (char *)malloc(sizeof(char) * 10);
  char frequent;
  int segno;
  int len = 0;
  int j;
  int i = 0;
  int flag = 0;
  while (str[i] != '\0') {
    if (i == 0) {
      item[0] = str[0];
      freq[0] = 1;
      segno = 0;
    } else {
      for (j = 0; j <= segno; j++) {
        if (item[j] == str[i]) {
          freq[j] = freq[j] + 1;
          flag = 1;
        }
      }
      if (flag == 0) {
        segno = segno + 1;
        item[segno] = str[i];
        freq[segno] = 1;
      }
    }
    i++;
    flag = 0;
  }
  *rep = freq[0];
  for (int i = 0; i <= segno; i++) {
    if (freq[i] > *rep) {
      *rep = freq[i];
    }
  }
  int step = 0;
  for (int i = 0; i < segno; i++) {
    if (*rep == freq[i]) {
      if (step == 0) {
        frequent = item[i];
        step++;
      } else if (((item)[i] < frequent) && (step > 0)) {
        frequent = item[i];
      }
    }
  }
  free(item);
  free(freq);
  return frequent;
}
```