user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<_ackermann>:
  endbr64
  test   %rdi,%rdi
  je     L213
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
L42:
  lea    -0x1(%rdi),%rax
  mov    %rax,0x18(%rsp)
  test   %rsi,%rsi
  jne    L195
  cmpq   $0x0,0x18(%rsp)
  je     L182
L65:
  mov    0x18(%rsp),%rax
L316:
  lea    -0x1(%rax),%rcx
  mov    %rcx,0x10(%rsp)
  test   %rsi,%rsi
  jne    L67
  cmpq   $0x0,0x10(%rsp)
  je     L425
L267:
  mov    0x10(%rsp),%rax
L330:
  lea    -0x1(%rax),%r14
  test   %rsi,%rsi
  jne    L309
  test   %r14,%r14
  je     L354
L305:
  mov    %r14,%rax
L239:
  lea    -0x1(%rax),%r13
  test   %rsi,%rsi
  jne    L327
  test   %r13,%r13
  je     L2
L149:
  mov    %r13,%rax
L110:
  lea    -0x1(%rax),%rdx
  test   %rsi,%rsi
  jne    L126
  test   %rdx,%rdx
  je     L111
L1:
  mov    %rdx,%rax
L300:
  lea    -0x1(%rax),%r15
  test   %rsi,%rsi
  jne    L150
  test   %r15,%r15
  je     L272
L90:
  mov    %r15,%rax
L14:
  lea    -0x1(%rax),%r12
  test   %rsi,%rsi
  jne    L405
  test   %r12,%r12
  je     L242
L17:
  mov    %r12,%rax
L256:
  lea    -0x1(%rax),%rbp
  test   %rsi,%rsi
  jne    L85
  test   %rbp,%rbp
  je     L120
L186:
  mov    %rbp,%rax
L209:
  lea    -0x1(%rax),%rbx
  test   %rsi,%rsi
  jne    L47
  test   %rbx,%rbx
  je     L141
L135:
  mov    %rbx,%rdi
  mov    %rdx,0x8(%rsp)
  call   <_ackermann>
  mov    0x8(%rsp),%rdx
  mov    %rax,%rsi
  mov    %rbx,%rax
  sub    $0x1,%rax
  jne    L209
  add    $0x1,%rsi
L229:
  mov    %rbp,%rax
  sub    $0x1,%rax
  jne    L256
  add    $0x1,%rsi
L37:
  mov    %r12,%rax
  sub    $0x1,%rax
  jne    L14
  add    $0x1,%rsi
L207:
  mov    %r15,%rax
  sub    $0x1,%rax
  jne    L300
  add    $0x1,%rsi
L101:
  mov    %rdx,%rax
  sub    $0x1,%rax
  jne    L110
  add    $0x1,%rsi
L81:
  mov    %r13,%rax
  sub    $0x1,%rax
  jne    L239
  add    $0x1,%rsi
L146:
  mov    %r14,%rax
  sub    $0x1,%rax
  jne    L330
  add    $0x1,%rsi
L315:
  mov    0x10(%rsp),%rax
  sub    $0x1,%rax
  jne    L316
  add    $0x1,%rsi
L117:
  mov    0x18(%rsp),%rdi
  sub    $0x1,%rdi
  jne    L42
  add    $0x28,%rsp
  lea    0x1(%rsi),%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopw   0x0(%rax,%rax,1)
L141:
  mov    $0x2,%esi
  jmp    L229
  nopw   0x0(%rax,%rax,1)
L120:
  mov    $0x2,%esi
  jmp    L37
  nopw   0x0(%rax,%rax,1)
L242:
  mov    $0x2,%esi
  jmp    L207
  nopw   0x0(%rax,%rax,1)
L272:
  mov    $0x2,%esi
  jmp    L101
  nopw   0x0(%rax,%rax,1)
L111:
  mov    $0x2,%esi
  jmp    L81
  nopw   0x0(%rax,%rax,1)
L2:
  mov    $0x2,%esi
  jmp    L146
  nopw   0x0(%rax,%rax,1)
L354:
  mov    $0x2,%esi
  jmp    L315
  nopw   0x0(%rax,%rax,1)
L47:
  sub    $0x1,%rsi
  mov    %rax,%rbx
  jmp    L135
  nopl   0x0(%rax)
L425:
  mov    $0x2,%esi
  jmp    L117
  nopw   0x0(%rax,%rax,1)
L85:
  sub    $0x1,%rsi
  mov    %rax,%rbp
  jmp    L186
  nopl   0x0(%rax)
L182:
  add    $0x28,%rsp
  mov    $0x2,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L405:
  sub    $0x1,%rsi
  mov    %rax,%r12
  jmp    L17
  nopl   0x0(%rax)
L150:
  sub    $0x1,%rsi
  mov    %rax,%r15
  jmp    L90
  nopl   0x0(%rax)
L126:
  sub    $0x1,%rsi
  mov    %rax,%rdx
  jmp    L1
  nopl   0x0(%rax)
L327:
  sub    $0x1,%rsi
  mov    %rax,%r13
  jmp    L149
  nopl   0x0(%rax)
L309:
  sub    $0x1,%rsi
  mov    %rax,%r14
  jmp    L305
  nopl   0x0(%rax)
L213:
  lea    0x1(%rsi),%rax
  ret
  nopl   (%rax)
L67:
  mov    %rax,0x10(%rsp)
  sub    $0x1,%rsi
  jmp    L267
  cs nopw 0x0(%rax,%rax,1)
L195:
  mov    %rdi,0x18(%rsp)
  sub    $0x1,%rsi
  jmp    L65
```

assistant: ```c
long _ackermann(long EV_m, long EV_n) {
  if ((EV_m == 0)) {
    return (EV_n + 1);
  }
  if ((EV_n == 0)) {
    return _ackermann((EV_m - 1), 1);
  } else {
    return _ackermann((EV_m - 1), _ackermann(EV_m, (EV_n - 1)));
  }
}
```