user: What would the C source look like for the assembly code provided here:

```asm
<unpackforblock21_64>:
  endbr64
  push   %r15
  movd   %edi,%xmm4
  push   %r14
  mov    %rsi,%r14
  pshufd $0x0,%xmm4,%xmm1
  push   %r13
  mov    %edi,%r13d
  push   %r12
  push   %rbp
  push   %rbx
  mov    (%rsi),%rcx
  mov    (%rdx),%r8
  mov    (%rcx),%edi
  mov    0x4(%rcx),%r10d
  add    $0x150,%rcx
  mov    %rdx,-0x10(%rsp)
  mov    -0x148(%rcx),%r12d
  mov    -0x144(%rcx),%edx
  mov    -0x140(%rcx),%ebp
  movd   %edi,%xmm0
  mov    -0x13c(%rcx),%r9d
  mov    -0x138(%rcx),%ebx
  mov    -0x134(%rcx),%eax
  mov    -0x130(%rcx),%r11d
  mov    -0x12c(%rcx),%esi
  mov    -0x128(%rcx),%r15d
  mov    %rcx,(%r14)
  mov    %edi,%ecx
  sar    $0x15,%ecx
  mov    %edi,%r14d
  movd   %ecx,%xmm3
  mov    $0x2a,%ecx
  sar    %cl,%r14d
  mov    $0x3f,%ecx
  punpckldq %xmm3,%xmm0
  movd   %r14d,%xmm2
  mov    %edi,%r14d
  mov    %r10d,%edi
  sar    %cl,%r14d
  sar    $0x14,%edi
  mov    %r14d,%ecx
  lea    (%r10,%r10,1),%r14d
  or     %r14d,%ecx
  movd   %ecx,%xmm5
  mov    $0x29,%ecx
  punpckldq %xmm5,%xmm2
  punpcklqdq %xmm2,%xmm0
  movdqa D1(%rip),%xmm2
  pand   %xmm2,%xmm0
  paddd  %xmm1,%xmm0
  movups %xmm0,(%r8)
  movd   %edi,%xmm0
  mov    %r10d,%edi
  sar    %cl,%edi
  mov    $0x3e,%ecx
  sar    %cl,%r10d
  lea    0x0(,%r12,4),%ecx
  movd   %edi,%xmm7
  mov    %r12d,%edi
  or     %ecx,%r10d
  mov    %r12d,%ecx
  punpckldq %xmm7,%xmm0
  sar    $0x13,%ecx
  movd   %r10d,%xmm3
  movd   %ecx,%xmm6
  mov    $0x28,%ecx
  punpckldq %xmm6,%xmm3
  sar    %cl,%edi
  mov    $0x3d,%ecx
  punpcklqdq %xmm3,%xmm0
  sar    %cl,%r12d
  lea    0x0(,%rdx,8),%ecx
  pand   %xmm2,%xmm0
  or     %ecx,%r12d
  mov    $0x27,%ecx
  paddd  %xmm1,%xmm0
  movd   %r12d,%xmm5
  movups %xmm0,0x10(%r8)
  movd   %edi,%xmm0
  mov    %edx,%edi
  sar    $0x12,%edi
  punpckldq %xmm5,%xmm0
  movd   %edi,%xmm3
  mov    %edx,%edi
  sar    %cl,%edi
  mov    $0x3c,%ecx
  movd   %edi,%xmm4
  sar    %cl,%edx
  mov    %ebp,%ecx
  mov    %ebp,%edi
  punpckldq %xmm4,%xmm3
  shl    $0x4,%ecx
  punpcklqdq %xmm3,%xmm0
  or     %ecx,%edx
  mov    $0x26,%ecx
  pand   %xmm2,%xmm0
  sar    %cl,%edi
  mov    $0x3b,%ecx
  paddd  %xmm1,%xmm0
  movd   %edi,%xmm3
  mov    %ebx,%edi
  movups %xmm0,0x20(%r8)
  movd   %edx,%xmm0
  mov    %ebp,%edx
  sar    %cl,%ebp
  mov    %r9d,%ecx
  sar    $0x11,%edx
  shl    $0x5,%ecx
  movd   %edx,%xmm7
  mov    %r9d,%edx
  or     %ecx,%ebp
  sar    $0x10,%edx
  punpckldq %xmm7,%xmm0
  mov    $0x25,%ecx
  movd   %ebp,%xmm6
  punpckldq %xmm6,%xmm3
  punpcklqdq %xmm3,%xmm0
  movd   %edx,%xmm3
  mov    %r9d,%edx
  sar    %cl,%edx
  mov    $0x3a,%ecx
  pand   %xmm2,%xmm0
  sar    %cl,%r9d
  paddd  %xmm1,%xmm0
  movd   %edx,%xmm5
  mov    %ebx,%ecx
  shl    $0x6,%ecx
  movups %xmm0,0x30(%r8)
  punpckldq %xmm5,%xmm3
  mov    %eax,%edx
  or     %ecx,%r9d
  mov    %ebx,%ecx
  shl    $0x7,%edx
  sar    $0xf,%ecx
  movd   %r9d,%xmm0
  movd   %ecx,%xmm4
  mov    $0x24,%ecx
  punpckldq %xmm4,%xmm0
  sar    %cl,%edi
  mov    $0x39,%ecx
  punpcklqdq %xmm0,%xmm3
  sar    %cl,%ebx
  mov    $0x23,%ecx
  pand   %xmm2,%xmm3
  or     %edx,%ebx
  mov    %eax,%edx
  movdqa %xmm3,%xmm0
  sar    %cl,%edx
  movd   %ebx,%xmm7
  mov    $0x38,%ecx
  paddd  %xmm1,%xmm0
  movd   %edx,%xmm6
  mov    %r11d,%edx
  movups %xmm0,0x40(%r8)
  movd   %edi,%xmm0
  mov    %eax,%edi
  shl    $0x8,%edx
  sar    $0xe,%edi
  punpckldq %xmm7,%xmm0
  sar    %cl,%eax
  mov    $0x22,%ecx
  movd   %edi,%xmm3
  or     %edx,%eax
  mov    %r11d,%edi
  mov    %esi,%edx
  sar    %cl,%edi
  punpckldq %xmm6,%xmm3
  mov    $0x37,%ecx
  shl    $0x9,%edx
  punpcklqdq %xmm3,%xmm0
  movd   %edi,%xmm3
  pand   %xmm2,%xmm0
  paddd  %xmm1,%xmm0
  movups %xmm0,0x50(%r8)
  movd   %eax,%xmm0
  mov    %r11d,%eax
  sar    %cl,%r11d
  sar    $0xd,%eax
  mov    $0x21,%ecx
  or     %edx,%r11d
  movd   %eax,%xmm5
  mov    %esi,%eax
  movd   %r11d,%xmm4
  sar    $0xc,%eax
  punpckldq %xmm4,%xmm3
  punpckldq %xmm5,%xmm0
  and    $0x1fffff,%eax
  punpcklqdq %xmm3,%xmm0
  add    %r13d,%eax
  pand   %xmm2,%xmm0
  mov    %eax,0x70(%r8)
  mov    %esi,%eax
  paddd  %xmm1,%xmm0
  sar    %cl,%eax
  mov    $0x36,%ecx
  movups %xmm0,0x60(%r8)
  and    $0x1fffff,%eax
  sar    %cl,%esi
  add    %r13d,%eax
  mov    %eax,0x74(%r8)
  mov    %r15d,%eax
  shl    $0xa,%eax
  or     %eax,%esi
  mov    %r15d,%eax
  and    $0x1fffff,%esi
  shr    $0xb,%eax
  add    %r13d,%esi
  add    %r13d,%eax
  mov    %esi,0x78(%r8)
  mov    %eax,0x7c(%r8)
  mov    -0x10(%rsp),%rdx
  subq   $0xffffffffffffff80,(%rdx)
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: extract_symbolic_data
arguments: label: D1
type_infered: byte[16]

tool: {"D1": [0xff,0xff,0x1f,0x00,0xff,0xff,0x1f,0x00,0xff,0xff,0x1f,0x00,0xff,0xff,0x1f,0x00]}

assistant: ```c
void unpackforblock21_64(const uint64_t base, const uint8_t **pw, uint64_t **pout) {
  const uint64_t *pw64 = *(const uint64_t **)pw;
  uint64_t *out = *pout;
  const uint64_t mask = (2097151ULL);
  uint64_t w0 = pw64[0];
  uint64_t w1 = pw64[1];
  uint64_t w2 = pw64[2];
  uint64_t w3 = pw64[3];
  uint64_t w4 = pw64[4];
  uint64_t w5 = pw64[5];
  uint64_t w6 = pw64[6];
  uint64_t w7 = pw64[7];
  uint64_t w8 = pw64[8];
  uint64_t w9 = pw64[9];
  uint64_t w10 = pw64[10];
  *pw += 84;
  out[0] = base + ((w0)&mask);
  out[1] = base + ((w0 >> 21) & mask);
  out[2] = base + ((w0 >> 42) & mask);
  out[3] = base + (((w0 >> 63) | (w1 << 1)) & mask);
  out[4] = base + ((w1 >> 20) & mask);
  out[5] = base + ((w1 >> 41) & mask);
  out[6] = base + (((w1 >> 62) | (w2 << 2)) & mask);
  out[7] = base + ((w2 >> 19) & mask);
  out[8] = base + ((w2 >> 40) & mask);
  out[9] = base + (((w2 >> 61) | (w3 << 3)) & mask);
  out[10] = base + ((w3 >> 18) & mask);
  out[11] = base + ((w3 >> 39) & mask);
  out[12] = base + (((w3 >> 60) | (w4 << 4)) & mask);
  out[13] = base + ((w4 >> 17) & mask);
  out[14] = base + ((w4 >> 38) & mask);
  out[15] = base + (((w4 >> 59) | (w5 << 5)) & mask);
  out[16] = base + ((w5 >> 16) & mask);
  out[17] = base + ((w5 >> 37) & mask);
  out[18] = base + (((w5 >> 58) | (w6 << 6)) & mask);
  out[19] = base + ((w6 >> 15) & mask);
  out[20] = base + ((w6 >> 36) & mask);
  out[21] = base + (((w6 >> 57) | (w7 << 7)) & mask);
  out[22] = base + ((w7 >> 14) & mask);
  out[23] = base + ((w7 >> 35) & mask);
  out[24] = base + (((w7 >> 56) | (w8 << 8)) & mask);
  out[25] = base + ((w8 >> 13) & mask);
  out[26] = base + ((w8 >> 34) & mask);
  out[27] = base + (((w8 >> 55) | (w9 << 9)) & mask);
  out[28] = base + ((w9 >> 12) & mask);
  out[29] = base + ((w9 >> 33) & mask);
  out[30] = base + (((w9 >> 54) | (w10 << 10)) & mask);
  out[31] = base + ((w10 >> 11) & mask);
  *pout += 32;
}
```