user: 下面的汇编指令对应的C源代码是什么:

```asm
<enumerate_ring_faces>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    %edx,-0x1c(%rbp)
  mov    %ecx,-0x20(%rbp)
  mov    %r8,-0x28(%rbp)
  mov    %r9,-0x30(%rbp)
  cmpl   $0x1,-0x18(%rbp)
  jne    L189
  movl   $0x0,-0x8(%rbp)
  jmp    L87
L163:
  cmpl   $0x0,-0x8(%rbp)
  je     L197
  mov    -0x8(%rbp),%eax
  sub    $0x1,%eax
  jmp    L134
L197:
  mov    -0x20(%rbp),%eax
  sub    $0x1,%eax
L134:
  mov    -0x1c(%rbp),%edx
  lea    (%rax,%rdx,1),%ecx
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%eax
  add    %eax,%edx
  mov    -0x14(%rbp),%esi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r9
  mov    $0xffffffff,%r8d
  mov    %rax,%rdi
  call   *%r9
  cmpq   $0x0,-0x30(%rbp)
  je     L137
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    -0x30(%rbp),%rax
  mov    %edx,(%rax)
L137:
  addl   $0x1,-0x8(%rbp)
L87:
  mov    -0x8(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jl     L163
  jmp    L118
L189:
  mov    -0x18(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jne    L39
  movl   $0x0,-0x8(%rbp)
  jmp    L170
L216:
  cmpl   $0x0,-0x8(%rbp)
  je     L185
  mov    -0x8(%rbp),%eax
  sub    $0x1,%eax
  jmp    L180
L185:
  mov    -0x18(%rbp),%eax
  sub    $0x1,%eax
L180:
  mov    -0x14(%rbp),%edx
  lea    (%rax,%rdx,1),%edi
  cmpl   $0x0,-0x8(%rbp)
  je     L125
  mov    -0x8(%rbp),%eax
  sub    $0x1,%eax
  jmp    L213
L125:
  mov    -0x18(%rbp),%eax
  sub    $0x1,%eax
L213:
  mov    -0x1c(%rbp),%edx
  lea    (%rax,%rdx,1),%ecx
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%eax
  add    %eax,%edx
  mov    -0x14(%rbp),%esi
  mov    -0x8(%rbp),%eax
  add    %eax,%esi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r9
  mov    %edi,%r8d
  mov    %rax,%rdi
  call   *%r9
  cmpq   $0x0,-0x30(%rbp)
  je     L18
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    -0x30(%rbp),%rax
  mov    %edx,(%rax)
L18:
  addl   $0x1,-0x8(%rbp)
L170:
  mov    -0x8(%rbp),%eax
  cmp    -0x18(%rbp),%eax
  jl     L216
  jmp    L118
L39:
  movl   $0x0,-0x4(%rbp)
  movl   $0x0,-0x8(%rbp)
  jmp    L208
L85:
  mov    -0x1c(%rbp),%edx
  mov    -0x4(%rbp),%eax
  lea    (%rdx,%rax,1),%ecx
  mov    -0x4(%rbp),%eax
  add    $0x1,%eax
  cltd
  idivl  -0x20(%rbp)
  mov    -0x1c(%rbp),%eax
  lea    (%rdx,%rax,1),%edi
  mov    -0x8(%rbp),%eax
  cltd
  idivl  -0x18(%rbp)
  mov    -0x14(%rbp),%eax
  lea    (%rdx,%rax,1),%esi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r9
  mov    $0xffffffff,%r8d
  mov    %edi,%edx
  mov    %rax,%rdi
  call   *%r9
  cmpq   $0x0,-0x30(%rbp)
  je     L205
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    -0x30(%rbp),%rax
  mov    %edx,(%rax)
L205:
  addl   $0x1,-0x4(%rbp)
L208:
  mov    -0x4(%rbp),%eax
  cmp    -0x20(%rbp),%eax
  jge    L200
  mov    -0x4(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x18(%rbp),%eax
  mov    %eax,%edx
  mov    -0x8(%rbp),%eax
  add    %eax,%eax
  add    $0x1,%eax
  imul   -0x20(%rbp),%eax
  cmp    %eax,%edx
  jl     L85
L200:
  mov    -0x8(%rbp),%eax
  cmp    -0x18(%rbp),%eax
  je     L7
  mov    -0x4(%rbp),%eax
  cltd
  idivl  -0x20(%rbp)
  mov    -0x1c(%rbp),%eax
  lea    (%rdx,%rax,1),%ecx
  mov    -0x8(%rbp),%eax
  add    $0x1,%eax
  cltd
  idivl  -0x18(%rbp)
  mov    -0x14(%rbp),%eax
  add    %eax,%edx
  mov    -0x14(%rbp),%esi
  mov    -0x8(%rbp),%eax
  add    %eax,%esi
  mov    -0x28(%rbp),%rax
  mov    0x10(%rbp),%r9
  mov    $0xffffffff,%r8d
  mov    %rax,%rdi
  call   *%r9
  cmpq   $0x0,-0x30(%rbp)
  je     L191
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  lea    0x1(%rax),%edx
  mov    -0x30(%rbp),%rax
  mov    %edx,(%rax)
L191:
  addl   $0x1,-0x8(%rbp)
  jmp    L208
L7:
  nop
L118:
  nop
  leave
  ret
```

assistant: ```c
void enumerate_ring_faces(int basevertex, int steps, int prevbase, int prevsteps, void *h, int *count_ret, void (*process_face)(void *h, int v1, int v2, int v3, int v4)) {
  int i, j;
  if (steps == 1) {
    for (i = 0; i < prevsteps; i++) {
      process_face(h, basevertex, prevbase + i, prevbase + (i ? i - 1 : prevsteps - 1), -1);
      if (count_ret)
        (*count_ret)++;
    }
  } else if (steps == prevsteps) {
    for (i = 0; i < steps; i++) {
      process_face(h, basevertex + i, prevbase + i, prevbase + (i ? i - 1 : steps - 1), basevertex + (i ? i - 1 : steps - 1));
      if (count_ret)
        (*count_ret)++;
    }
  } else {
    j = 0;
    for (i = 0;; i++) {
      while (j < prevsteps && steps * (1 + 2 * j) < prevsteps * (1 + 2 * i)) {
        process_face(h, basevertex + (i % steps), prevbase + ((j + 1) % prevsteps), prevbase + j, -1);
        if (count_ret)
          (*count_ret)++;
        j++;
      }
      if (i == steps)
        break;
      process_face(h, basevertex + i, basevertex + ((i + 1) % steps), prevbase + (j % prevsteps), -1);
      if (count_ret)
        (*count_ret)++;
    }
  }
}
```