user: 这段汇编代码用C语言表示是什么样的?

```asm
<__mpn_impn_sqr_n>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %edx,-0x34(%rbp)
  mov    %rcx,-0x40(%rbp)
  mov    -0x34(%rbp),%eax
  and    $0x1,%eax
  test   %eax,%eax
  je     L68
  mov    -0x34(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x8(%rbp)
  cmpl   $0x1f,-0x8(%rbp)
  jg     L126
  mov    -0x8(%rbp),%edx
  mov    -0x30(%rbp),%rcx
  mov    -0x28(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <__mpn_impn_sqr_n_basecase@plt>
  jmp    L87
L126:
  mov    -0x40(%rbp),%rcx
  mov    -0x8(%rbp),%edx
  mov    -0x30(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <__mpn_impn_sqr_n>
L87:
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x8(%rbp),%edx
  mov    -0x30(%rbp),%rax
  mov    %rax,%rsi
  call   <__mpn_addmul_1@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x8(%rbp),%eax
  add    %eax,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  mov    %eax,(%rdx)
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  mov    -0x8(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x34(%rbp),%edx
  mov    -0x30(%rbp),%rax
  mov    %rax,%rsi
  call   <__mpn_addmul_1@plt>
  mov    %eax,-0x4(%rbp)
  mov    -0x8(%rbp),%edx
  mov    -0x34(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  mov    -0x4(%rbp),%eax
  mov    %eax,(%rdx)
  jmp    L19
L68:
  mov    -0x34(%rbp),%eax
  sar    %eax
  mov    %eax,-0x10(%rbp)
  cmpl   $0x1f,-0x10(%rbp)
  jg     L128
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x10(%rbp),%eax
  mov    %eax,%edx
  mov    %rcx,%rdi
  call   <__mpn_impn_sqr_n_basecase@plt>
  jmp    L109
L128:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x40(%rbp),%rdx
  mov    -0x10(%rbp),%eax
  mov    %rdx,%rcx
  mov    %eax,%edx
  call   <__mpn_impn_sqr_n>
L109:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  mov    %eax,%ecx
  mov    -0x10(%rbp),%edx
  mov    -0x30(%rbp),%rax
  mov    %rax,%rsi
  mov    %ecx,%edi
  call   <__mpn_cmp@plt>
  test   %rax,%rax
  js     L100
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x10(%rbp),%ecx
  mov    -0x30(%rbp),%rdx
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <__mpn_sub_n@plt>
  jmp    L104
L100:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x10(%rbp),%edx
  mov    -0x30(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  mov    %edx,%ecx
  mov    %rdi,%rdx
  mov    %rax,%rdi
  call   <__mpn_sub_n@plt>
L104:
  cmpl   $0x1f,-0x10(%rbp)
  jg     L55
  mov    -0x10(%rbp),%edx
  mov    -0x28(%rbp),%rcx
  mov    -0x40(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <__mpn_impn_sqr_n_basecase@plt>
  jmp    L150
L55:
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x10(%rbp),%edx
  mov    -0x28(%rbp),%rsi
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <__mpn_impn_sqr_n>
L150:
  movl   $0x0,-0x18(%rbp)
  jmp    L96
L39:
  mov    -0x34(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x18(%rbp),%eax
  cltq
  add    %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    -0x10(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x18(%rbp),%edx
  movslq %edx,%rdx
  add    %rcx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x18(%rbp)
L96:
  mov    -0x18(%rbp),%eax
  cmp    -0x10(%rbp),%eax
  jl     L39
  mov    -0x34(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  add    %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rax,%rdx
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rsi
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  mov    -0x10(%rbp),%eax
  mov    %eax,%ecx
  call   <__mpn_add_n@plt>
  mov    %eax,-0xc(%rbp)
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x34(%rbp),%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%ecx
  mov    %rax,%rdx
  call   <__mpn_sub_n@plt>
  sub    %eax,-0xc(%rbp)
  cmpl   $0x1f,-0x10(%rbp)
  jg     L20
  mov    -0x10(%rbp),%edx
  mov    -0x30(%rbp),%rcx
  mov    -0x40(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <__mpn_impn_sqr_n_basecase@plt>
  jmp    L27
L20:
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  lea    (%rdx,%rax,1),%rcx
  mov    -0x10(%rbp),%edx
  mov    -0x30(%rbp),%rsi
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <__mpn_impn_sqr_n>
L27:
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x34(%rbp),%edx
  mov    -0x40(%rbp),%rax
  mov    %edx,%ecx
  mov    %rax,%rdx
  call   <__mpn_add_n@plt>
  add    %eax,-0xc(%rbp)
  cmpl   $0x0,-0xc(%rbp)
  je     L147
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x34(%rbp),%eax
  cltq
  add    %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x10(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x34(%rbp),%eax
  cltq
  add    %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0xc(%rbp),%edx
  mov    -0x10(%rbp),%eax
  mov    %edx,%ecx
  mov    %eax,%edx
  call   <__mpn_add_1@plt>
L147:
  movl   $0x0,-0x14(%rbp)
  jmp    L123
L42:
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rdx,%rax
  mov    -0x14(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x28(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rax),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x14(%rbp)
L123:
  mov    -0x14(%rbp),%eax
  cmp    -0x10(%rbp),%eax
  jl     L42
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x40(%rbp),%rax
  add    %rax,%rdx
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rsi
  mov    -0x10(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  mov    -0x10(%rbp),%eax
  mov    %eax,%ecx
  call   <__mpn_add_n@plt>
  mov    %eax,-0xc(%rbp)
  cmpl   $0x0,-0xc(%rbp)
  je     L19
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rsi
  mov    -0x34(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  lea    (%rdx,%rax,1),%rdi
  mov    -0x34(%rbp),%eax
  mov    $0x1,%ecx
  mov    %eax,%edx
  call   <__mpn_add_1@plt>
L19:
  nop
  leave
  ret
```

assistant: ```c
void __mpn_impn_sqr_n(mp_ptr prodp, mp_srcptr up, mp_size_t size, mp_ptr tspace) {
  if ((size & 1) != 0) {
    mp_size_t esize = size - 1;
    mp_limb_t cy_limb;
    do {
      if ((esize) < 32)
        __mpn_impn_sqr_n_basecase(prodp, up, esize);
      else
        __mpn_impn_sqr_n(prodp, up, esize, tspace);
    } while (0);
    ;
    cy_limb = __mpn_addmul_1(prodp + esize, up, esize, up[esize]);
    prodp[esize + esize] = cy_limb;
    cy_limb = __mpn_addmul_1(prodp + esize, up, size, up[esize]);
    prodp[esize + size] = cy_limb;
  } else {
    mp_size_t hsize = size >> 1;
    mp_limb_t cy;
    do {
      if ((hsize) < 32)
        __mpn_impn_sqr_n_basecase(prodp + size, up + hsize, hsize);
      else
        __mpn_impn_sqr_n(prodp + size, up + hsize, hsize, tspace);
    } while (0);
    ;
    if (__mpn_cmp(up + hsize, up, hsize) >= 0) {
      __mpn_sub_n(prodp, up + hsize, up, hsize);
    } else {
      __mpn_sub_n(prodp, up, up + hsize, hsize);
    }
    do {
      if ((hsize) < 32)
        __mpn_impn_sqr_n_basecase(tspace, prodp, hsize);
      else
        __mpn_impn_sqr_n(tspace, prodp, hsize, tspace + size);
    } while (0);
    ;
    do {
      mp_size_t __i;
      for (__i = 0; __i < (hsize); __i++)
        (prodp + hsize)[__i] = (prodp + size)[__i];
    } while (0);
    cy = __mpn_add_n(prodp + size, prodp + size, prodp + size + hsize, hsize);
    cy -= __mpn_sub_n(prodp + hsize, prodp + hsize, tspace, size);
    do {
      if ((hsize) < 32)
        __mpn_impn_sqr_n_basecase(tspace, up, hsize);
      else
        __mpn_impn_sqr_n(tspace, up, hsize, tspace + size);
    } while (0);
    ;
    cy += __mpn_add_n(prodp + hsize, prodp + hsize, tspace, size);
    if (cy)
      __mpn_add_1(prodp + hsize + size, prodp + hsize + size, hsize, cy);
    do {
      mp_size_t __i;
      for (__i = 0; __i < (hsize); __i++)
        (prodp)[__i] = (tspace)[__i];
    } while (0);
    cy = __mpn_add_n(prodp + hsize, prodp + hsize, tspace + hsize, hsize);
    if (cy)
      __mpn_add_1(prodp + size, prodp + size, size, 1);
  }
}
```