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

```asm
<sort2>:
  endbr64
  push   %r15
  push   %r14
  mov    %edx,%r14d
  push   %r13
  mov    %rsi,%r13
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  mov    %r8,%rbp
  push   %rbx
  sub    $0x18,%rsp
  test   %edx,%edx
  jle    L124
  lea    -0x1(%rdx),%edx
  lea    0x4(%rdi),%r9
  mov    %rdi,%rax
  lea    (%r9,%rdx,4),%rsi
  nopl   0x0(%rax)
L109:
  movslq (%rax),%rdx
  add    $0x4,%rax
  addl   $0x1,0x0(%rbp,%rdx,4)
  cmp    %rsi,%rax
  jne    L109
  test   %ecx,%ecx
  jle    L84
L108:
  sub    $0x1,%ecx
  mov    0x0(%rbp),%edx
  lea    0x4(%rbp),%rax
  lea    0x8(%rbp,%rcx,4),%rcx
L117:
  add    (%rax),%edx
  add    $0x4,%rax
  mov    %edx,-0x4(%rax)
  cmp    %rcx,%rax
  jne    L117
  mov    $0x4,%esi
  mov    %r14d,%edi
  call   <calloc@plt>
  mov    $0x4,%esi
  mov    %r14d,%edi
  mov    %rax,%rbx
  mov    %rax,%r15
  call   <calloc@plt>
  mov    %rax,%rcx
  mov    %rax,%r8
  test   %r14d,%r14d
  jle    L19
  lea    0x4(%r12),%r9
L63:
  mov    %rcx,%rax
  mov    %rbx,%rdx
  lea    0x4(%r13),%rsi
  sub    %r9,%rax
  cmp    $0x8,%rax
  seta   %al
  sub    %r9,%rdx
  cmp    $0x8,%rdx
  seta   %dl
  and    %edx,%eax
  cmp    $0x1,%r14d
  setne  %dl
  and    %edx,%eax
  mov    %rcx,%rdx
  sub    %rsi,%rdx
  lea    0x10(%rbx),%rsi
  cmp    $0x8,%rdx
  seta   %dl
  and    %edx,%eax
  lea    0x10(%r13),%rdx
  cmp    %rdx,%rbx
  setae  %dl
  cmp    %rsi,%r13
  setae  %sil
  or     %esi,%edx
  test   %dl,%al
  je     L23
  lea    0x4(%rbx),%rdx
  mov    %rcx,%rax
  sub    %rdx,%rax
  cmp    $0x8,%rax
  jbe    L23
  lea    -0x1(%r14),%eax
  mov    %r14d,%edi
  cmp    $0x2,%eax
  jbe    L163
  mov    %r14d,%edx
  mov    %r12,%r9
  mov    %r13,%rdi
  mov    %rcx,%rsi
  shr    $0x2,%edx
  mov    %rbx,%rax
  sub    %rbx,%r9
  sub    %rbx,%rdi
  shl    $0x4,%rdx
  sub    %rbx,%rsi
  add    %rbx,%rdx
  nop
L4:
  movdqu (%r9,%rax,1),%xmm0
  movups %xmm0,(%rax)
  movdqu (%rdi,%rax,1),%xmm1
  movups %xmm1,(%rsi,%rax,1)
  add    $0x10,%rax
  cmp    %rax,%rdx
  jne    L4
  mov    %r14d,%edx
  mov    %r14d,%esi
  and    $0xfffffffc,%edx
  mov    %edx,%eax
  cmp    %edx,%r14d
  je     L154
  mov    %r14d,%edi
  sub    %edx,%edi
  cmp    $0x1,%edi
  je     L128
L8:
  mov    (%r12,%rdx,4),%rsi
  mov    %rsi,(%rbx,%rdx,4)
  mov    0x0(%r13,%rdx,4),%rsi
  mov    %rsi,(%rcx,%rdx,4)
  mov    %edi,%edx
  mov    %r14d,%esi
  and    $0xfffffffe,%edx
  add    %edx,%eax
  cmp    %edx,%edi
  je     L154
L128:
  cltq
  mov    %r14d,%esi
  mov    (%r12,%rax,4),%edx
  mov    %edx,(%rbx,%rax,4)
  mov    0x0(%r13,%rax,4),%edx
  mov    %edx,(%rcx,%rax,4)
L154:
  mov    %r12,%r9
  sub    %rbx,%rcx
  lea    (%rbx,%rsi,4),%rdi
  mov    %rbx,%rdx
  sub    %rbx,%r9
  mov    %rcx,%r10
  nopl   0x0(%rax,%rax,1)
L1:
  movslq (%r9,%rdx,1),%rax
  lea    0x0(%rbp,%rax,4),%rcx
  mov    (%rcx),%eax
  sub    $0x1,%eax
  mov    %eax,(%rcx)
  mov    (%rdx),%esi
  cltq
  mov    %esi,(%r12,%rax,4)
  mov    (%r10,%rdx,1),%esi
  add    $0x4,%rdx
  mov    %esi,0x0(%r13,%rax,4)
  cmp    %rdi,%rdx
  jne    L1
L19:
  mov    %r15,%rdi
  mov    %r8,0x8(%rsp)
  call   <free@plt>
  mov    0x8(%rsp),%rdi
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1060 <free@plt>
  nop
L23:
  mov    %r14d,%esi
  mov    %r12,%r10
  mov    %r13,%r9
  mov    %rcx,%rdi
  lea    (%rbx,%rsi,4),%r11
  mov    %rbx,%rax
  sub    %rbx,%r10
  sub    %rbx,%r9
  sub    %rbx,%rdi
  nopl   0x0(%rax)
L47:
  mov    (%r10,%rax,1),%edx
  mov    %edx,(%rax)
  mov    (%r9,%rax,1),%edx
  mov    %edx,(%rdi,%rax,1)
  add    $0x4,%rax
  cmp    %rax,%r11
  jne    L47
  jmp    L154
  nopl   0x0(%rax,%rax,1)
L124:
  test   %ecx,%ecx
  jg     L108
  mov    $0x4,%esi
  mov    %r14d,%edi
  call   <calloc@plt>
  mov    $0x4,%esi
  mov    %r14d,%edi
  mov    %rax,%r15
  call   <calloc@plt>
  mov    %rax,%r8
  jmp    L19
  nopl   (%rax)
L84:
  mov    $0x4,%esi
  mov    %r14d,%edi
  mov    %r9,0x8(%rsp)
  call   <calloc@plt>
  mov    $0x4,%esi
  mov    %r14d,%edi
  mov    %rax,%rbx
  mov    %rax,%r15
  call   <calloc@plt>
  mov    0x8(%rsp),%r9
  mov    %rax,%rcx
  mov    %rax,%r8
  jmp    L63
L163:
  xor    %edx,%edx
  xor    %eax,%eax
  jmp    L8
```

assistant: ```c
void sort2(int *a, int *b, int n, int na, int *abegin) {
  int i, j;
  int *aaux, *baux;
  for (i = 0; i < n; i++)
    abegin[a[i]]++;
  for (i = 1; i <= na; i++)
    abegin[i] += abegin[i - 1];
  aaux = (int *)calloc(n, sizeof(int));
  baux = (int *)calloc(n, sizeof(int));
  for (i = 0; i < n; i++) {
    aaux[i] = a[i];
    baux[i] = b[i];
  };
  for (i = 0; i < n; i++) {
    j = --abegin[a[i]];
    a[j] = aaux[i];
    b[j] = baux[i];
  }
  free(aaux);
  free(baux);
}
```