user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<ntruenc_encode_msg>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %esi,-0x2c(%rbp)
  mov    %edx,-0x30(%rbp)
  mov    %rcx,-0x38(%rbp)
  movl   $0x0,-0x18(%rbp)
  lea    -0x2c(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x2c(%rbp),%eax
  add    $0x2,%eax
  shl    $0x3,%eax
  cmp    %eax,-0x30(%rbp)
  jge    L106
  movl   $0x3,-0x18(%rbp)
  jmp    L6
L106:
  mov    -0x2c(%rbp),%eax
  add    $0x2,%eax
  lea    0x0(,%rax,8),%edx
  mov    -0x30(%rbp),%eax
  sub    %edx,%eax
  lea    0x7(%rax),%edx
  test   %eax,%eax
  cmovs  %edx,%eax
  sar    $0x3,%eax
  mov    %eax,-0xc(%rbp)
  movl   $0x0,-0x14(%rbp)
  jmp    L5
L78:
  movl   $0x0,-0x10(%rbp)
  jmp    L61
L109:
  mov    -0x14(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x10(%rbp),%eax
  mov    %eax,%ecx
  sar    %cl,%edx
  mov    %edx,%eax
  add    %eax,%eax
  and    $0x2,%eax
  lea    -0x1(%rax),%edx
  mov    -0x14(%rbp),%eax
  lea    0x0(,%rax,8),%ecx
  mov    -0x10(%rbp),%eax
  add    %ecx,%eax
  cltq
  lea    (%rax,%rax,1),%rcx
  mov    -0x38(%rbp),%rax
  add    %rcx,%rax
  mov    %dx,(%rax)
  addl   $0x1,-0x10(%rbp)
L61:
  cmpl   $0x7,-0x10(%rbp)
  jle    L109
  addl   $0x1,-0x14(%rbp)
L5:
  cmpl   $0x1,-0x14(%rbp)
  jle    L78
  addq   $0x20,-0x38(%rbp)
  movl   $0x0,-0x14(%rbp)
  jmp    L141
L0:
  movl   $0x0,-0x10(%rbp)
  jmp    L98
L8:
  mov    -0x14(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x10(%rbp),%eax
  mov    %eax,%ecx
  sar    %cl,%edx
  mov    %edx,%eax
  add    %eax,%eax
  and    $0x2,%eax
  lea    -0x1(%rax),%edx
  mov    -0x14(%rbp),%eax
  lea    0x0(,%rax,8),%ecx
  mov    -0x10(%rbp),%eax
  add    %ecx,%eax
  cltq
  lea    (%rax,%rax,1),%rcx
  mov    -0x38(%rbp),%rax
  add    %rcx,%rax
  mov    %dx,(%rax)
  addl   $0x1,-0x10(%rbp)
L98:
  cmpl   $0x7,-0x10(%rbp)
  jle    L8
  addl   $0x1,-0x14(%rbp)
L141:
  mov    -0x2c(%rbp),%eax
  cmp    %eax,-0x14(%rbp)
  jl     L0
  mov    -0x2c(%rbp),%eax
  shl    $0x3,%eax
  cltq
  add    %rax,%rax
  add    %rax,-0x38(%rbp)
  movl   $0x0,-0x14(%rbp)
  jmp    L126
L108:
  movl   $0x0,-0x10(%rbp)
  jmp    L111
L120:
  mov    -0x14(%rbp),%eax
  lea    0x0(,%rax,8),%edx
  mov    -0x10(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    (%rax,%rax,1),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movw   $0x0,(%rax)
  addl   $0x1,-0x10(%rbp)
L111:
  cmpl   $0x7,-0x10(%rbp)
  jle    L120
  addl   $0x1,-0x14(%rbp)
L126:
  mov    -0x14(%rbp),%eax
  cmp    -0xc(%rbp),%eax
  jl     L108
  mov    -0xc(%rbp),%eax
  shl    $0x3,%eax
  cltq
  add    %rax,%rax
  add    %rax,-0x38(%rbp)
  mov    -0x2c(%rbp),%eax
  add    $0x2,%eax
  lea    0x0(,%rax,8),%edx
  mov    -0x30(%rbp),%eax
  sub    %edx,%eax
  and    $0x7,%eax
  cmp    $0x7,%eax
  ja     L80
  mov    %eax,%eax
  lea    0x0(,%rax,4),%rdx
  lea    D19(%rip),%rax
  mov    (%rdx,%rax,1),%eax
  cltq
  lea    D19(%rip),%rdx
  add    %rdx,%rax
  notrack jmp *%rax
  mov    -0x38(%rbp),%rax
  add    $0xc,%rax
  movw   $0x0,(%rax)
  mov    -0x38(%rbp),%rax
  add    $0xa,%rax
  movw   $0x0,(%rax)
  mov    -0x38(%rbp),%rax
  add    $0x8,%rax
  movw   $0x0,(%rax)
  mov    -0x38(%rbp),%rax
  add    $0x6,%rax
  movw   $0x0,(%rax)
  mov    -0x38(%rbp),%rax
  add    $0x4,%rax
  movw   $0x0,(%rax)
  mov    -0x38(%rbp),%rax
  add    $0x2,%rax
  movw   $0x0,(%rax)
  mov    -0x38(%rbp),%rax
  movw   $0x0,(%rax)
L80:
  nop
L6:
  mov    -0x18(%rbp),%eax
  pop    %rbp
  ret
```

assistant: ```c
int ntruenc_encode_msg(unsigned char *data, int len, int n, short *m) {
  int ret = 0;
  int i, j;
  unsigned char *l = (unsigned char *)&len;
  int zlen;
  if ((len + 2) * 8 > n) {
    ret = 3;
    goto end;
  }
  zlen = (n - ((len + 2) * 8)) / 8;
  for (i = 0; i < 2; i++) {
    for (j = 0; j < 8; j++)
      m[i * 8 + j] = (((l[i] >> j) & 1) << 1) - 1;
  }
  m += 2 * 8;
  for (i = 0; i < len; i++) {
    for (j = 0; j < 8; j++)
      m[i * 8 + j] = (((data[i] >> j) & 1) << 1) - 1;
  }
  m += len * 8;
  for (i = 0; i < zlen; i++) {
    for (j = 0; j < 8; j++)
      m[i * 8 + j] = 0;
  }
  m += zlen * 8;
  switch ((n - ((len + 2) * 8)) & 7) {
  case 7:
    m[6] = 0;
  case 6:
    m[5] = 0;
  case 5:
    m[4] = 0;
  case 4:
    m[3] = 0;
  case 3:
    m[2] = 0;
  case 2:
    m[1] = 0;
  case 1:
    m[0] = 0;
  default:
    break;
  }
end:
  return ret;
}
```