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

```asm
<packforblock29>:
  endbr64
  mov    %rsi,%r8
  push   %r14
  mov    %rdx,%r9
  mov    %rdi,%rcx
  mov    (%r8),%rax
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    (%rdx),%rsi
  mov    0x40(%rax),%r14d
  mov    0x48(%rax),%edx
  mov    0x58(%rax),%r13d
  mov    0x68(%rax),%r12d
  sub    %ecx,%r14d
  sub    %ecx,%edx
  mov    0x78(%rax),%ebp
  mov    (%rax),%ebx
  sar    $0x18,%r14d
  shl    $0x5,%edx
  sub    %ecx,%r13d
  sub    %ecx,%r12d
  or     %r14d,%edx
  sar    %r13d
  sub    %ecx,%ebp
  mov    0x10(%rax),%r11d
  movd   %edx,%xmm4
  mov    0x60(%rax),%edx
  sar    $0x7,%r12d
  mov    0x20(%rax),%r10d
  sar    $0xd,%ebp
  mov    0x88(%rax),%r14d
  sub    %edi,%ebx
  sub    %edi,%r11d
  sub    %ecx,%edx
  sub    %edi,%r10d
  mov    0x30(%rax),%edi
  sar    $0x6,%r11d
  shl    $0x1c,%edx
  sub    %ecx,%r14d
  sar    $0xc,%r10d
  or     %edx,%r13d
  mov    0x70(%rax),%edx
  sub    %ecx,%edi
  sar    $0x13,%r14d
  movd   %r13d,%xmm6
  mov    0x98(%rax),%r13d
  sar    $0x12,%edi
  sub    %ecx,%edx
  punpckldq %xmm6,%xmm4
  shl    $0x16,%edx
  sub    %ecx,%r13d
  or     %r12d,%edx
  mov    0x80(%rax),%r12d
  sar    $0x19,%r13d
  movd   %edx,%xmm0
  mov    0x90(%rax),%edx
  sub    %ecx,%r12d
  shl    $0x10,%r12d
  or     %ebp,%r12d
  mov    0xc0(%rax),%ebp
  movd   %r12d,%xmm5
  mov    0xb0(%rax),%r12d
  punpckldq %xmm5,%xmm0
  sub    %ecx,%r12d
  punpcklqdq %xmm0,%xmm4
  sar    $0x2,%r12d
  sub    %ecx,%edx
  sub    %ecx,%ebp
  shl    $0xa,%edx
  sar    $0x8,%ebp
  or     %r14d,%edx
  movd   %edx,%xmm0
  mov    0xa0(%rax),%edx
  sub    %ecx,%edx
  shl    $0x4,%edx
  or     %edx,%r13d
  mov    0xb8(%rax),%edx
  movd   %r13d,%xmm5
  sub    %ecx,%edx
  punpckldq %xmm5,%xmm0
  shl    $0x1b,%edx
  or     %r12d,%edx
  mov    0xc8(%rax),%r12d
  movd   %edx,%xmm1
  mov    0xd8(%rax),%edx
  sub    %ecx,%r12d
  shl    $0x15,%r12d
  sub    %ecx,%edx
  or     %ebp,%r12d
  mov    0xd0(%rax),%ebp
  shl    $0xf,%edx
  movd   %r12d,%xmm7
  mov    0xe0(%rax),%r12d
  sub    %ecx,%ebp
  punpckldq %xmm7,%xmm1
  sar    $0xe,%ebp
  sub    %ecx,%r12d
  punpcklqdq %xmm1,%xmm0
  or     %ebp,%edx
  mov    0xe8(%rax),%ebp
  sar    $0x14,%r12d
  movd   %edx,%xmm2
  mov    0xf0(%rax),%edx
  sub    %ecx,%ebp
  shl    $0x9,%ebp
  sub    %ecx,%edx
  or     %r12d,%ebp
  sar    $0x1a,%edx
  movd   %ebp,%xmm6
  mov    0xf8(%rax),%ebp
  punpckldq %xmm6,%xmm2
  sub    %ecx,%ebp
  shl    $0x3,%ebp
  or     %edx,%ebp
  mov    0x8(%rax),%edx
  sub    %ecx,%edx
  shl    $0x1d,%edx
  or     %ebx,%edx
  add    $0x100,%rax
  add    $0x1d0,%rsi
  movd   %edx,%xmm1
  mov    -0xe8(%rax),%edx
  sub    %ecx,%edx
  shl    $0x17,%edx
  or     %edx,%r11d
  mov    -0xd8(%rax),%edx
  movd   %r11d,%xmm5
  sub    %ecx,%edx
  punpckldq %xmm5,%xmm1
  shl    $0x11,%edx
  or     %r10d,%edx
  mov    -0xc8(%rax),%r10d
  mov    %ebp,-0x198(%rsi)
  movd   %edx,%xmm3
  movups %xmm4,-0x1c0(%rsi)
  sub    %ecx,%r10d
  movups %xmm0,-0x1b0(%rsi)
  movq   %xmm2,-0x1a0(%rsi)
  mov    %r10d,%ecx
  shl    $0xb,%ecx
  or     %edi,%ecx
  movd   %ecx,%xmm7
  punpckldq %xmm7,%xmm3
  punpcklqdq %xmm3,%xmm1
  movups %xmm1,-0x1d0(%rsi)
  pop    %rbx
  pop    %rbp
  mov    %rax,(%r8)
  pop    %r12
  mov    %rsi,(%r9)
  pop    %r13
  pop    %r14
  ret
```

assistant: ```c
void packforblock29(const uint32_t base, const uint32_t **pin, uint8_t **pw) {
  uint64_t *pw64 = *(uint64_t **)pw;
  const uint32_t *in = *pin;
  uint64_t w0;
  uint64_t w1;
  uint64_t w2;
  uint64_t w3;
  uint64_t w4;
  uint64_t w5;
  uint64_t w6;
  uint64_t w7;
  uint64_t w8;
  uint64_t w9;
  uint64_t w10;
  uint64_t w11;
  uint64_t w12;
  uint64_t w13;
  uint64_t w14;
  w0 = (uint64_t)(in[0] - base);
  w0 |= (uint64_t)(in[1] - base) << 29;
  w0 |= (uint64_t)(in[2] - base) << 58;
  w1 = (uint64_t)(in[2] - base) >> 6;
  w1 |= (uint64_t)(in[3] - base) << 23;
  w1 |= (uint64_t)(in[4] - base) << 52;
  w2 = (uint64_t)(in[4] - base) >> 12;
  w2 |= (uint64_t)(in[5] - base) << 17;
  w2 |= (uint64_t)(in[6] - base) << 46;
  w3 = (uint64_t)(in[6] - base) >> 18;
  w3 |= (uint64_t)(in[7] - base) << 11;
  w3 |= (uint64_t)(in[8] - base) << 40;
  w4 = (uint64_t)(in[8] - base) >> 24;
  w4 |= (uint64_t)(in[9] - base) << 5;
  w4 |= (uint64_t)(in[10] - base) << 34;
  w4 |= (uint64_t)(in[11] - base) << 63;
  w5 = (uint64_t)(in[11] - base) >> 1;
  w5 |= (uint64_t)(in[12] - base) << 28;
  w5 |= (uint64_t)(in[13] - base) << 57;
  w6 = (uint64_t)(in[13] - base) >> 7;
  w6 |= (uint64_t)(in[14] - base) << 22;
  w6 |= (uint64_t)(in[15] - base) << 51;
  w7 = (uint64_t)(in[15] - base) >> 13;
  w7 |= (uint64_t)(in[16] - base) << 16;
  w7 |= (uint64_t)(in[17] - base) << 45;
  w8 = (uint64_t)(in[17] - base) >> 19;
  w8 |= (uint64_t)(in[18] - base) << 10;
  w8 |= (uint64_t)(in[19] - base) << 39;
  w9 = (uint64_t)(in[19] - base) >> 25;
  w9 |= (uint64_t)(in[20] - base) << 4;
  w9 |= (uint64_t)(in[21] - base) << 33;
  w9 |= (uint64_t)(in[22] - base) << 62;
  w10 = (uint64_t)(in[22] - base) >> 2;
  w10 |= (uint64_t)(in[23] - base) << 27;
  w10 |= (uint64_t)(in[24] - base) << 56;
  w11 = (uint64_t)(in[24] - base) >> 8;
  w11 |= (uint64_t)(in[25] - base) << 21;
  w11 |= (uint64_t)(in[26] - base) << 50;
  w12 = (uint64_t)(in[26] - base) >> 14;
  w12 |= (uint64_t)(in[27] - base) << 15;
  w12 |= (uint64_t)(in[28] - base) << 44;
  w13 = (uint64_t)(in[28] - base) >> 20;
  w13 |= (uint64_t)(in[29] - base) << 9;
  w13 |= (uint64_t)(in[30] - base) << 38;
  w14 = (uint64_t)(in[30] - base) >> 26;
  w14 |= (uint64_t)(in[31] - base) << 3;
  pw64[0] = w0;
  pw64[1] = w1;
  pw64[2] = w2;
  pw64[3] = w3;
  pw64[4] = w4;
  pw64[5] = w5;
  pw64[6] = w6;
  pw64[7] = w7;
  pw64[8] = w8;
  pw64[9] = w9;
  pw64[10] = w10;
  pw64[11] = w11;
  pw64[12] = w12;
  pw64[13] = w13;
  pw64[14] = w14;
  *pin += 32;
  *pw += 116;
}
```