user: 下面的汇编指令对应的C源代码是什么:

```asm
<makeNormals>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x70,%rsp
  mov    %rdi,-0x58(%rbp)
  mov    %rsi,-0x60(%rbp)
  mov    %edx,-0x64(%rbp)
  mov    %rcx,-0x70(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x0,-0x48(%rbp)
  movl   $0x0,-0x4c(%rbp)
  jmp    L31
L10:
  movl   $0x0,-0x44(%rbp)
  jmp    L53
L37:
  mov    -0x48(%rbp),%eax
  cltq
  add    $0x2,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  mov    -0x58(%rbp),%rax
  add    %rax,%rdx
  mov    -0x44(%rbp),%eax
  cltq
  mov    (%rdx,%rax,8),%rcx
  mov    -0x48(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  mov    -0x58(%rbp),%rax
  add    %rax,%rdx
  mov    -0x44(%rbp),%eax
  cltq
  mov    (%rdx,%rax,8),%rax
  sub    %rax,%rcx
  mov    %rcx,%rdx
  mov    -0x44(%rbp),%eax
  cltq
  mov    %rdx,-0x40(%rbp,%rax,8)
  mov    -0x48(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  mov    -0x58(%rbp),%rax
  add    %rax,%rdx
  mov    -0x44(%rbp),%eax
  cltq
  mov    (%rdx,%rax,8),%rcx
  mov    -0x48(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  mov    -0x58(%rbp),%rax
  add    %rax,%rdx
  mov    -0x44(%rbp),%eax
  cltq
  mov    (%rdx,%rax,8),%rax
  sub    %rax,%rcx
  mov    %rcx,%rdx
  mov    -0x44(%rbp),%eax
  cltq
  mov    %rdx,-0x20(%rbp,%rax,8)
  addl   $0x1,-0x44(%rbp)
L53:
  cmpl   $0x2,-0x44(%rbp)
  jle    L37
  mov    -0x4c(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rax,%rdx
  lea    -0x20(%rbp),%rcx
  lea    -0x40(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <crossProduct@plt>
  mov    -0x4c(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x3,%rax
  mov    %rax,%rdx
  mov    -0x70(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,%rdi
  call   <normalize@plt>
  jmp    L66
L52:
  addl   $0x1,-0x48(%rbp)
L66:
  mov    -0x48(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x60(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  test   %eax,%eax
  jns    L52
  addl   $0x1,-0x48(%rbp)
  addl   $0x1,-0x4c(%rbp)
L31:
  mov    -0x4c(%rbp),%eax
  cmp    -0x64(%rbp),%eax
  jl     L10
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L64
  call   <__stack_chk_fail@plt>
L64:
  leave
  ret
```

assistant: ```c
void makeNormals(GLfloat vs[][3], int fs[], int nrFacets, GLfloat ns[][3]) {
  int f, i, c;
  GLfloat vec1[3], vec2[3];
  i = 0;
  for (f = 0; f < nrFacets; f++) {
    for (c = 0; c < 3; c++) {
      vec1[c] = vs[fs[i + 2]][c] - vs[fs[i + 1]][c];
      vec2[c] = vs[fs[i]][c] - vs[fs[i + 1]][c];
    }
    crossProduct(vec1, vec2, ns[f]);
    normalize(ns[f]);
    while (fs[i] >= 0)
      i++;
    i++;
  }
}
```