user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<gen_expr>:
  endbr64
  test   %edi,%edi
  je     L108
  push   %r15
  xor    %eax,%eax
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %edi,%ebp
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x51eb851f,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x25,%rdx
  sub    %ecx,%edx
  imul   $0x64,%edx,%edx
  sub    %edx,%eax
  cmp    $0x4,%eax
  mov    $0x0,%eax
  jg     L54
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1090 <gen_variable_expr@plt>
L54:
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x51eb851f,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x25,%rdx
  sub    %ecx,%edx
  imul   $0x64,%edx,%edx
  sub    %edx,%eax
  cmp    $0x13,%eax
  jle    L103
  mov    %ebp,%edi
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    10c0 <gen_arith_expr@plt>
  nopl   0x0(%rax)
L108:
  xor    %eax,%eax
  jmp    1090 <gen_variable_expr@plt>
  nop
L103:
  lea    D29(%rip),%r15
  lea    D8(%rip),%r14
  mov    %r15,%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_test_expr@plt>
  mov    %r14,%rdi
  call   <printf@plt>
  xor    %eax,%eax
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x51eb851f,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x25,%rdx
  sub    %ecx,%edx
  imul   $0x64,%edx,%edx
  sub    %edx,%eax
  cmp    $0x4,%eax
  mov    $0x0,%eax
  jle    L97
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x51eb851f,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x25,%rdx
  sub    %ecx,%edx
  imul   $0x64,%edx,%edx
  sub    %edx,%eax
  cmp    $0x13,%eax
  jle    L40
  mov    %ebp,%edi
  lea    D6(%rip),%r13
  lea    D12(%rip),%r12
  call   <gen_arith_expr@plt>
  jmp    L4
  nop
L97:
  call   <gen_variable_expr@plt>
  lea    D6(%rip),%r13
  lea    D12(%rip),%r12
L4:
  mov    %r13,%rdi
  call   <printf@plt>
  xor    %eax,%eax
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x51eb851f,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x25,%rdx
  sub    %ecx,%edx
  imul   $0x64,%edx,%edx
  sub    %edx,%eax
  cmp    $0x4,%eax
  mov    $0x0,%eax
  jle    L81
  call   <rand@plt>
  movslq %eax,%rdx
  mov    %eax,%ecx
  imul   $0x51eb851f,%rdx,%rdx
  sar    $0x1f,%ecx
  sar    $0x25,%rdx
  sub    %ecx,%edx
  imul   $0x64,%edx,%edx
  sub    %edx,%eax
  cmp    $0x13,%eax
  jle    L19
  mov    %ebp,%edi
  call   <gen_arith_expr@plt>
  jmp    L44
  nopl   0x0(%rax,%rax,1)
L81:
  call   <gen_variable_expr@plt>
L44:
  pop    %rbp
  mov    %r12,%rdi
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    10a0 <printf@plt>
  xchg   %ax,%ax
L19:
  mov    %r15,%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_test_expr@plt>
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_expr>
  mov    %r13,%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_expr>
  mov    %r12,%rdi
  call   <printf@plt>
  jmp    L44
  nopw   0x0(%rax,%rax,1)
L40:
  mov    %r15,%rdi
  lea    D6(%rip),%r13
  lea    D12(%rip),%r12
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_test_expr@plt>
  mov    %r14,%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_expr>
  mov    %r13,%rdi
  call   <printf@plt>
  mov    %ebp,%edi
  call   <gen_expr>
  mov    %r12,%rdi
  call   <printf@plt>
  jmp    L4
```

tool_calls: name: unpack_data
arguments: tag: D29
type_guessed: string
name: unpack_data
arguments: tag: D8
type_guessed: string
name: unpack_data
arguments: tag: D6
type_guessed: string
name: unpack_data
arguments: tag: D12
type_guessed: string

tool: D29: (

tool: D8:  ? 

tool: D6:  : 

tool: D12: )

assistant: ```c
void gen_expr(unsigned int level) {
  if (!level || rand() % 100 < 5) {
    gen_variable_expr();
    return;
  }
  if (rand() % 100 < 20) {
    printf("(");
    gen_test_expr(level);
    printf(" ? ");
    gen_expr(level);
    printf(" : ");
    gen_expr(level);
    printf(")");
    return;
  }
  gen_arith_expr(level);
}
```