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

```asm
<encshare2>:
  endbr64
  mov    %rsi,%r9
  movslq %edx,%rsi
  mov    0x4cc(%rdi),%ecx
  mov    0x4c8(%rdi),%edx
  lea    (%r9,%rsi,4),%r10
  movdqu 0x4c0(%rdi),%xmm0
  mov    0x4c4(%rdi),%eax
  cmp    %r10,%r9
  jae    L41
  push   %rbp
  movd   %xmm0,%r8d
  push   %rbx
  nopl   0x0(%rax,%rax,1)
L40:
  mov    %r8d,%esi
  lea    0x440(%rdi,%rsi,4),%rsi
  cmp    $0xffff,%ecx
  ja     L42
  nopw   0x0(%rax,%rax,1)
L16:
  add    %ecx,%eax
  mov    %ecx,0x40(%rsi)
  add    %ecx,%ecx
  add    $0x4,%rsi
  add    %eax,%edx
  mov    %r8d,%r11d
  add    $0x1,%r8d
  add    %edx,%eax
  mov    %edx,-0x4(%rsi)
  ror    $0x8,%edx
  movzbl %al,%ebx
  mov    %eax,-0x44(%rsi)
  movzbl %dl,%ebp
  xor    (%rdi,%rbx,4),%eax
  xor    (%rdi,%rbp,4),%edx
  mov    %eax,%ebx
  shr    $0x18,%eax
  ror    $0x8,%edx
  rol    $0x8,%ebx
  xor    (%rdi,%rax,4),%ebx
  movzbl %dl,%ebp
  mov    %ebx,%eax
  xor    (%rdi,%rbp,4),%edx
  rol    $0x8,%eax
  cmp    $0xffff,%ecx
  jbe    L16
  mov    %r8d,%esi
  mov    %r11d,%r8d
L12:
  xor    %eax,%edx
  lea    0xff(%rsi),%eax
  add    $0x4,%r9
  mov    %edx,-0x4(%r9)
  lea    0x10f(%rsi),%edx
  mov    (%rdi,%rax,4),%eax
  mov    (%rdi,%rdx,4),%ecx
  not    %eax
  movzbl %cl,%edx
  ror    $0x8,%eax
  xor    (%rdi,%rdx,4),%ecx
  movzbl %al,%r11d
  mov    %ecx,%edx
  shr    $0x18,%ecx
  xor    (%rdi,%r11,4),%eax
  rol    $0x8,%edx
  xor    (%rdi,%rcx,4),%edx
  lea    0x11f(%rsi),%ecx
  ror    $0x8,%eax
  mov    (%rdi,%rcx,4),%ecx
  movzbl %al,%r11d
  rol    $0x8,%edx
  xor    (%rdi,%r11,4),%eax
  lea    0x1(%rcx,%rcx,1),%ecx
  cmp    %r9,%r10
  ja     L40
  movd   %edx,%xmm1
  movd   %ecx,%xmm2
  movd   %r8d,%xmm0
  pop    %rbx
  movd   %eax,%xmm3
  punpckldq %xmm2,%xmm1
  pop    %rbp
  punpckldq %xmm3,%xmm0
  punpcklqdq %xmm1,%xmm0
  movups %xmm0,0x4c0(%rdi)
  ret
  nopw   0x0(%rax,%rax,1)
L42:
  mov    %r8d,%esi
  sub    $0x1,%r8d
  jmp    L12
L41:
  movups %xmm0,0x4c0(%rdi)
  ret
```

assistant: ```c
void encshare2(unsigned int *tbuff, unsigned int *tbuffp, int len) {
  unsigned int t1, t2, t3, t4, t5, *limit, *p;
  t2 = tbuff[304];
  t1 = tbuff[305];
  t3 = tbuff[306];
  t5 = tbuff[307];
  limit = tbuffp + len;
  while (tbuffp < limit) {
    p = tbuff + t2 + 272;
    while (t5 < 65536) {
      t1 += t5;
      p++;
      t3 += t1;
      t1 += t3;
      p[-17] = t1;
      p[-1] = t3;
      t4 = (t3 << 24) | (t3 >> 8);
      p[15] = t5;
      t5 <<= 1;
      t2++;
      t1 ^= tbuff[t1 & 0xff];
      t4 ^= tbuff[t4 & 0xff];
      t3 = (t4 << 24) | (t4 >> 8);
      t4 = (t1 >> 24) | (t1 << 8);
      t4 ^= tbuff[t4 & 0xff];
      t3 ^= tbuff[t3 & 0xff];
      t1 = (t4 >> 24) | (t4 << 8);
    }
    t3 ^= t1;
    *tbuffp++ = t3;
    t2--;
    t1 = tbuff[t2 + 256];
    t5 = tbuff[t2 + 272];
    t1 = ~t1;
    t3 = (t1 << 24) | (t1 >> 8);
    t3 ^= tbuff[t3 & 0xff];
    t5 ^= tbuff[t5 & 0xff];
    t1 = (t3 << 24) | (t3 >> 8);
    t4 = (t5 >> 24) | (t5 << 8);
    t1 ^= tbuff[t1 & 0xff];
    t4 ^= tbuff[t4 & 0xff];
    t3 = (t4 >> 24) | (t4 << 8);
    t5 = (tbuff[t2 + 288] << 1) + 1;
  }
  tbuff[304] = t2;
  tbuff[305] = t1;
  tbuff[306] = t3;
  tbuff[307] = t5;
}
```