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

```asm
<internal_fiat_secp256k1_from_bytes>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0xe8,%rsp
  mov    %rdi,%rbx
  mov    %rsi,%r12
  mov    $0x1,%esi
  mov    %r12d,%edi
  call   <_br2_load@plt>
  mov    %rax,0x8(%rsp)
  lea    0x1(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x10(%rsp)
  lea    0x2(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x18(%rsp)
  lea    0x3(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x20(%rsp)
  lea    0x4(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x28(%rsp)
  lea    0x5(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x30(%rsp)
  lea    0x6(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x38(%rsp)
  lea    0x7(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,%r15
  lea    0x8(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x40(%rsp)
  lea    0x9(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x48(%rsp)
  lea    0xa(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x50(%rsp)
  lea    0xb(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x58(%rsp)
  lea    0xc(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x60(%rsp)
  lea    0xd(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x68(%rsp)
  lea    0xe(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x70(%rsp)
  lea    0xf(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,%r14
  lea    0x10(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x78(%rsp)
  lea    0x11(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x80(%rsp)
  lea    0x12(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x88(%rsp)
  lea    0x13(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,%r13
  lea    0x14(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x90(%rsp)
  lea    0x15(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0x98(%rsp)
  lea    0x16(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xa0(%rsp)
  lea    0x17(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xa8(%rsp)
  lea    0x18(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xb0(%rsp)
  lea    0x19(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xb8(%rsp)
  lea    0x1a(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xc0(%rsp)
  lea    0x1b(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,%rbp
  lea    0x1c(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xc8(%rsp)
  lea    0x1d(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xd0(%rsp)
  lea    0x1e(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  mov    %rax,0xd8(%rsp)
  lea    0x1f(%r12),%edi
  mov    $0x1,%esi
  call   <_br2_load@plt>
  shl    $0x18,%r15
  mov    0x38(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%r15
  add    0x28(%rsp),%r15
  mov    0x30(%rsp),%rdx
  shl    $0x8,%rdx
  lea    (%r15,%rdx,1),%rsi
  mov    %rsi,0x28(%rsp)
  mov    0x58(%rsp),%r15
  shl    $0x18,%r15
  mov    0x50(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%r15
  add    0x40(%rsp),%r15
  mov    0x48(%rsp),%rdx
  shl    $0x8,%rdx
  add    %rdx,%r15
  shl    $0x18,%r14
  mov    0x70(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%r14
  add    0x60(%rsp),%r14
  mov    0x68(%rsp),%rdx
  shl    $0x8,%rdx
  add    %rdx,%r14
  shl    $0x18,%r13
  mov    0x88(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%r13
  add    0x78(%rsp),%r13
  mov    0x80(%rsp),%rdx
  shl    $0x8,%rdx
  add    %rdx,%r13
  mov    0xa8(%rsp),%r12
  shl    $0x18,%r12
  mov    0xa0(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%r12
  add    0x90(%rsp),%r12
  mov    0x98(%rsp),%rdx
  shl    $0x8,%rdx
  add    %rdx,%r12
  shl    $0x18,%rbp
  mov    0xc0(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%rbp
  add    0xb0(%rsp),%rbp
  mov    0xb8(%rsp),%rdx
  shl    $0x8,%rdx
  add    %rdx,%rbp
  shl    $0x18,%rax
  mov    0xd8(%rsp),%rdx
  shl    $0x10,%rdx
  add    %rdx,%rax
  mov    0xc8(%rsp),%rdx
  add    %rax,%rdx
  mov    0xd0(%rsp),%rcx
  shl    $0x8,%rcx
  add    %rcx,%rdx
  mov    %rdx,0x30(%rsp)
  mov    0x20(%rsp),%rcx
  shl    $0x18,%rcx
  mov    %rcx,%rsi
  mov    0x18(%rsp),%rcx
  shl    $0x10,%rcx
  add    %rcx,%rsi
  add    0x8(%rsp),%rsi
  mov    0x10(%rsp),%rax
  shl    $0x8,%rax
  add    %rax,%rsi
  mov    $0x8,%edx
  mov    %ebx,%edi
  call   <_br2_store@plt>
  lea    0x4(%rbx),%edi
  mov    $0x8,%edx
  mov    0x28(%rsp),%rsi
  call   <_br2_store@plt>
  lea    0x8(%rbx),%edi
  mov    $0x8,%edx
  mov    %r15,%rsi
  call   <_br2_store@plt>
  lea    0xc(%rbx),%edi
  mov    $0x8,%edx
  mov    %r14,%rsi
  call   <_br2_store@plt>
  lea    0x10(%rbx),%edi
  mov    $0x8,%edx
  mov    %r13,%rsi
  call   <_br2_store@plt>
  lea    0x14(%rbx),%edi
  mov    $0x8,%edx
  mov    %r12,%rsi
  call   <_br2_store@plt>
  lea    0x18(%rbx),%edi
  mov    $0x8,%edx
  mov    %rbp,%rsi
  call   <_br2_store@plt>
  lea    0x1c(%rbx),%edi
  mov    $0x8,%edx
  mov    0x30(%rsp),%rsi
  call   <_br2_store@plt>
  add    $0xe8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void internal_fiat_secp256k1_from_bytes(uintptr_t out0, uintptr_t in0) {
  uintptr_t x31, x30, x29, x28, x27, x26, x25, x24, x23, x22, x21, x20, x19, x18, x17, x16, x15, x14, x13, x12, x11, x10, x9, x8, x7, x6, x5, x4, x3, x2, x1, x0, x62, x63, x61, x64, x60, x65, x58, x59, x57, x67, x56, x68, x54, x55, x53, x70, x52, x71, x50, x51, x49, x73, x48, x74, x46, x47, x45, x76, x44, x77, x42, x43, x41, x79, x40, x80, x38, x39, x37, x82, x36, x83, x34, x35, x33, x85, x32, x86, x66, x69, x72, x75, x78, x81, x84, x87, x88, x89, x90, x91, x92, x93, x94, x95;
  x0 = _br2_load((in0) + ((uintptr_t)0ULL), 1);
  x1 = _br2_load((in0) + ((uintptr_t)1ULL), 1);
  x2 = _br2_load((in0) + ((uintptr_t)2ULL), 1);
  x3 = _br2_load((in0) + ((uintptr_t)3ULL), 1);
  x4 = _br2_load((in0) + ((uintptr_t)4ULL), 1);
  x5 = _br2_load((in0) + ((uintptr_t)5ULL), 1);
  x6 = _br2_load((in0) + ((uintptr_t)6ULL), 1);
  x7 = _br2_load((in0) + ((uintptr_t)7ULL), 1);
  x8 = _br2_load((in0) + ((uintptr_t)8ULL), 1);
  x9 = _br2_load((in0) + ((uintptr_t)9ULL), 1);
  x10 = _br2_load((in0) + ((uintptr_t)10ULL), 1);
  x11 = _br2_load((in0) + ((uintptr_t)11ULL), 1);
  x12 = _br2_load((in0) + ((uintptr_t)12ULL), 1);
  x13 = _br2_load((in0) + ((uintptr_t)13ULL), 1);
  x14 = _br2_load((in0) + ((uintptr_t)14ULL), 1);
  x15 = _br2_load((in0) + ((uintptr_t)15ULL), 1);
  x16 = _br2_load((in0) + ((uintptr_t)16ULL), 1);
  x17 = _br2_load((in0) + ((uintptr_t)17ULL), 1);
  x18 = _br2_load((in0) + ((uintptr_t)18ULL), 1);
  x19 = _br2_load((in0) + ((uintptr_t)19ULL), 1);
  x20 = _br2_load((in0) + ((uintptr_t)20ULL), 1);
  x21 = _br2_load((in0) + ((uintptr_t)21ULL), 1);
  x22 = _br2_load((in0) + ((uintptr_t)22ULL), 1);
  x23 = _br2_load((in0) + ((uintptr_t)23ULL), 1);
  x24 = _br2_load((in0) + ((uintptr_t)24ULL), 1);
  x25 = _br2_load((in0) + ((uintptr_t)25ULL), 1);
  x26 = _br2_load((in0) + ((uintptr_t)26ULL), 1);
  x27 = _br2_load((in0) + ((uintptr_t)27ULL), 1);
  x28 = _br2_load((in0) + ((uintptr_t)28ULL), 1);
  x29 = _br2_load((in0) + ((uintptr_t)29ULL), 1);
  x30 = _br2_load((in0) + ((uintptr_t)30ULL), 1);
  x31 = _br2_load((in0) + ((uintptr_t)31ULL), 1);
  x32 = (x31) << ((uintptr_t)24ULL);
  x33 = (x30) << ((uintptr_t)16ULL);
  x34 = (x29) << ((uintptr_t)8ULL);
  x35 = x28;
  x36 = (x27) << ((uintptr_t)24ULL);
  x37 = (x26) << ((uintptr_t)16ULL);
  x38 = (x25) << ((uintptr_t)8ULL);
  x39 = x24;
  x40 = (x23) << ((uintptr_t)24ULL);
  x41 = (x22) << ((uintptr_t)16ULL);
  x42 = (x21) << ((uintptr_t)8ULL);
  x43 = x20;
  x44 = (x19) << ((uintptr_t)24ULL);
  x45 = (x18) << ((uintptr_t)16ULL);
  x46 = (x17) << ((uintptr_t)8ULL);
  x47 = x16;
  x48 = (x15) << ((uintptr_t)24ULL);
  x49 = (x14) << ((uintptr_t)16ULL);
  x50 = (x13) << ((uintptr_t)8ULL);
  x51 = x12;
  x52 = (x11) << ((uintptr_t)24ULL);
  x53 = (x10) << ((uintptr_t)16ULL);
  x54 = (x9) << ((uintptr_t)8ULL);
  x55 = x8;
  x56 = (x7) << ((uintptr_t)24ULL);
  x57 = (x6) << ((uintptr_t)16ULL);
  x58 = (x5) << ((uintptr_t)8ULL);
  x59 = x4;
  x60 = (x3) << ((uintptr_t)24ULL);
  x61 = (x2) << ((uintptr_t)16ULL);
  x62 = (x1) << ((uintptr_t)8ULL);
  x63 = x0;
  x64 = (x62) + (x63);
  x65 = (x61) + (x64);
  x66 = (x60) + (x65);
  x67 = (x58) + (x59);
  x68 = (x57) + (x67);
  x69 = (x56) + (x68);
  x70 = (x54) + (x55);
  x71 = (x53) + (x70);
  x72 = (x52) + (x71);
  x73 = (x50) + (x51);
  x74 = (x49) + (x73);
  x75 = (x48) + (x74);
  x76 = (x46) + (x47);
  x77 = (x45) + (x76);
  x78 = (x44) + (x77);
  x79 = (x42) + (x43);
  x80 = (x41) + (x79);
  x81 = (x40) + (x80);
  x82 = (x38) + (x39);
  x83 = (x37) + (x82);
  x84 = (x36) + (x83);
  x85 = (x34) + (x35);
  x86 = (x33) + (x85);
  x87 = (x32) + (x86);
  x88 = x66;
  x89 = x69;
  x90 = x72;
  x91 = x75;
  x92 = x78;
  x93 = x81;
  x94 = x84;
  x95 = x87;
  _br2_store((out0) + ((uintptr_t)0ULL), x88, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)4ULL), x89, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)8ULL), x90, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)12ULL), x91, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)16ULL), x92, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)20ULL), x93, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)24ULL), x94, sizeof(uintptr_t));
  _br2_store((out0) + ((uintptr_t)28ULL), x95, sizeof(uintptr_t));
  return;
}
```