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

```asm
<P>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %rbx
  sub    $0x2b8,%rsp
  mov    %rdi,-0x288(%rbp)
  mov    %rsi,-0x290(%rbp)
  mov    %rdx,-0x298(%rbp)
  mov    %rcx,-0x2a0(%rbp)
  mov    %r8,-0x2a8(%rbp)
  mov    %r9,-0x2b0(%rbp)
  mov    0x10(%rbp),%rax
  mov    %rax,-0x2b8(%rbp)
  mov    0x18(%rbp),%rax
  mov    %rax,-0x2c0(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  mov    -0x288(%rbp),%rax
  mov    %rax,-0x260(%rbp)
  mov    -0x290(%rbp),%rax
  mov    %rax,-0x258(%rbp)
  mov    -0x298(%rbp),%rax
  mov    %rax,-0x250(%rbp)
  mov    -0x2a0(%rbp),%rax
  mov    %rax,-0x248(%rbp)
  mov    -0x2a8(%rbp),%rax
  mov    %rax,-0x240(%rbp)
  mov    -0x2b0(%rbp),%rax
  mov    %rax,-0x238(%rbp)
  mov    -0x2b8(%rbp),%rax
  mov    %rax,-0x230(%rbp)
  mov    -0x2c0(%rbp),%rax
  mov    %rax,-0x228(%rbp)
  movl   $0x0,-0x274(%rbp)
  jmp    L27
L39:
  movl   $0x0,-0x270(%rbp)
  jmp    L80
L52:
  mov    -0x274(%rbp),%eax
  lea    0x0(,%rax,4),%edx
  mov    -0x270(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x264(%rbp)
  mov    -0x264(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  jne    L70
  mov    -0x264(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edi
  call   <floor@plt>
  cltq
  mov    -0x260(%rbp,%rax,8),%rax
  lea    0x20(%rax),%rcx
  lea    -0x220(%rbp),%rdx
  mov    -0x270(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x274(%rbp),%eax
  cltq
  shl    $0x2,%rax
  add    %rsi,%rax
  shl    $0x5,%rax
  add    %rdx,%rax
  mov    $0x8,%edx
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
  jmp    L77
L70:
  mov    -0x264(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edi
  call   <floor@plt>
  cltq
  mov    -0x260(%rbp,%rax,8),%rax
  lea    -0x220(%rbp),%rcx
  mov    -0x270(%rbp),%edx
  movslq %edx,%rsi
  mov    -0x274(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  add    %rsi,%rdx
  shl    $0x5,%rdx
  add    %rdx,%rcx
  mov    $0x8,%edx
  mov    %rax,%rsi
  mov    %rcx,%rdi
  call   <memcpy@plt>
L77:
  addl   $0x1,-0x270(%rbp)
L80:
  cmpl   $0x3,-0x270(%rbp)
  jle    L52
  addl   $0x1,-0x274(%rbp)
L27:
  cmpl   $0x3,-0x274(%rbp)
  jle    L39
  lea    -0x220(%rbp),%rax
  lea    0x180(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x100(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0x80(%rax),%rsi
  lea    -0x220(%rbp),%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x1a0(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x120(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0xa0(%rax),%rsi
  lea    -0x220(%rbp),%rax
  add    $0x20,%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x1c0(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x140(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0xc0(%rax),%rsi
  lea    -0x220(%rbp),%rax
  add    $0x40,%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x1e0(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x160(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0xe0(%rax),%rsi
  lea    -0x220(%rbp),%rax
  add    $0x60,%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x1e0(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x140(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0xa0(%rax),%rsi
  lea    -0x220(%rbp),%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x60(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x160(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0xc0(%rax),%rsi
  lea    -0x220(%rbp),%rax
  add    $0x20,%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x1a0(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x100(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0xe0(%rax),%rsi
  lea    -0x220(%rbp),%rax
  add    $0x40,%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  lea    -0x220(%rbp),%rax
  lea    0x1c0(%rax),%rcx
  lea    -0x220(%rbp),%rax
  lea    0x120(%rax),%rdx
  lea    -0x220(%rbp),%rax
  lea    0x80(%rax),%rsi
  lea    -0x220(%rbp),%rax
  add    $0x60,%rax
  mov    %rax,%rdi
  call   <apply_G@plt>
  movl   $0x0,-0x26c(%rbp)
  jmp    L110
L100:
  movl   $0x0,-0x268(%rbp)
  jmp    L69
L95:
  mov    -0x26c(%rbp),%eax
  lea    0x0(,%rax,4),%edx
  mov    -0x268(%rbp),%eax
  add    %edx,%eax
  mov    %eax,-0x264(%rbp)
  mov    -0x264(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  jne    L84
  lea    -0x220(%rbp),%rdx
  mov    -0x268(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x26c(%rbp),%eax
  cltq
  shl    $0x2,%rax
  add    %rcx,%rax
  shl    $0x5,%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x264(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edi
  call   <floor@plt>
  cltq
  mov    -0x260(%rbp,%rax,8),%rax
  add    $0x20,%rax
  mov    $0x8,%edx
  mov    %rbx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
  jmp    L59
L84:
  lea    -0x220(%rbp),%rdx
  mov    -0x268(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x26c(%rbp),%eax
  cltq
  shl    $0x2,%rax
  add    %rcx,%rax
  shl    $0x5,%rax
  lea    (%rdx,%rax,1),%rbx
  mov    -0x264(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edi
  call   <floor@plt>
  cltq
  mov    -0x260(%rbp,%rax,8),%rax
  mov    $0x8,%edx
  mov    %rbx,%rsi
  mov    %rax,%rdi
  call   <memcpy@plt>
L59:
  addl   $0x1,-0x268(%rbp)
L69:
  cmpl   $0x3,-0x268(%rbp)
  jle    L95
  addl   $0x1,-0x26c(%rbp)
L110:
  cmpl   $0x3,-0x26c(%rbp)
  jle    L100
  nop
  mov    -0x18(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L3
  call   <__stack_chk_fail@plt>
L3:
  mov    -0x8(%rbp),%rbx
  leave
  ret
```

assistant: ```c
void P(uint8_t *S0, uint8_t *S1, uint8_t *S2, uint8_t *S3, uint8_t *S4, uint8_t *S5, uint8_t *S6, uint8_t *S7) {
  uint8_t *S[8] = {S0, S1, S2, S3, S4, S5, S6, S7};
  uint8_t V[4][4][8];
  int h;
  for (int i = 0; i < 4; i++) {
    for (int j = 0; j < 4; j++) {
      h = 4 * i + j;
      if (h % 2 == 0)
        memcpy(V[i][j], S[(int)floor(h / 2)] + 8, 8);
      else
        memcpy(V[i][j], S[(int)floor(h / 2)], 8);
    }
  }
  apply_G(V[0][0], V[1][0], V[2][0], V[3][0]);
  apply_G(V[0][1], V[1][1], V[2][1], V[3][1]);
  apply_G(V[0][2], V[1][2], V[2][2], V[3][2]);
  apply_G(V[0][3], V[1][3], V[2][3], V[3][3]);
  apply_G(V[0][0], V[1][1], V[2][2], V[3][3]);
  apply_G(V[0][1], V[1][2], V[2][3], V[0][3]);
  apply_G(V[0][2], V[1][3], V[2][0], V[3][1]);
  apply_G(V[0][3], V[1][0], V[2][1], V[3][2]);
  for (int i = 0; i < 4; i++) {
    for (int j = 0; j < 4; j++) {
      h = 4 * i + j;
      if (h % 2 == 0)
        memcpy(S[(int)floor(h / 2)] + 8, V[i][j], 8);
      else
        memcpy(S[(int)floor(h / 2)], V[i][j], 8);
    }
  }
}
```