user: 请从给定的汇编指令推导出C源代码:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movl   $0x11,-0x30(%rbp)
  movl   $0x12,-0x2c(%rbp)
  movl   $0x1b,-0x28(%rbp)
  movl   $0x16,-0x24(%rbp)
  movl   $0x0,-0x20(%rbp)
  movl   $0x0,-0x1c(%rbp)
  movl   $0x0,-0x18(%rbp)
  movl   $0x0,-0x14(%rbp)
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%esi
  lea    D109(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L1
L74:
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%esi
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x38(%rbp)
L1:
  cmpl   $0x3,-0x38(%rbp)
  jle    L74
  mov    $0xa,%edi
  call   <putchar@plt>
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%esi
  lea    D119(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L42
L95:
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%edi
  call   <gpio_export@plt>
  mov    %eax,-0x34(%rbp)
  mov    -0x34(%rbp),%eax
  mov    %eax,%esi
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x38(%rbp)
L42:
  cmpl   $0x3,-0x38(%rbp)
  jle    L95
  mov    $0xa,%edi
  call   <putchar@plt>
  lea    D3(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L100
L82:
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  lea    D53(%rip),%rdx
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <gpio_set_edge@plt>
  mov    %eax,-0x34(%rbp)
  mov    -0x34(%rbp),%eax
  mov    %eax,%esi
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x38(%rbp)
L100:
  cmpl   $0x3,-0x38(%rbp)
  jle    L82
  mov    $0xa,%edi
  call   <putchar@plt>
  lea    D107(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L80
L77:
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  mov    $0x0,%esi
  mov    %eax,%edi
  call   <gpio_set_active_low@plt>
  mov    %eax,-0x34(%rbp)
  mov    -0x34(%rbp),%eax
  mov    %eax,%esi
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x38(%rbp)
L80:
  cmpl   $0x3,-0x38(%rbp)
  jle    L77
  mov    $0xa,%edi
  call   <putchar@plt>
  lea    D29(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  movl   $0x0,-0x38(%rbp)
  jmp    L31
L67:
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x30(%rbp,%rax,4),%eax
  mov    %eax,%edi
  call   <gpio_fd_open@plt>
  mov    -0x38(%rbp),%edx
  movslq %edx,%rdx
  mov    %eax,-0x20(%rbp,%rdx,4)
  mov    -0x38(%rbp),%eax
  cltq
  mov    -0x20(%rbp,%rax,4),%eax
  mov    %eax,%esi
  lea    D16(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  addl   $0x1,-0x38(%rbp)
L31:
  cmpl   $0x3,-0x38(%rbp)
  jle    L67
  mov    $0xa,%edi
  call   <putchar@plt>
  lea    D108(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
L50:
  lea    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <wait_event@plt>
  mov    $0xc350,%edi
  call   <usleep@plt>
  jmp    L50
```

tool_calls: name: read_data
arguments: tag: D109
type_infered: string
name: read_data
arguments: tag: D16
type_infered: string
name: read_data
arguments: tag: D119
type_infered: string
name: read_data
arguments: tag: D3
type_infered: string
name: read_data
arguments: tag: D53
type_infered: string
name: read_data
arguments: tag: D107
type_infered: string
name: read_data
arguments: tag: D29
type_infered: string
name: read_data
arguments: tag: D108
type_infered: string

tool: D109: pins    

tool: D16:  %2d

tool: D119: export  

tool: D3: edge    

tool: D53: rising

tool: D107: low     

tool: D29: fds     

tool: D108: waiting 300 sec for event

assistant: ```c
int main() {
  int i, rc;
  int pins[4] = {17, 18, 27, 22};
  int fds[4] = {0, 0, 0, 0};
  printf("pins    ", pins[i]);
  for (i = 0; i < 4; i++) {
    printf(" %2d", pins[i]);
  }
  printf("\n");
  printf("export  ", pins[i]);
  for (i = 0; i < 4; i++) {
    rc = gpio_export(pins[i]);
    printf(" %2d", rc);
  }
  printf("\n");
  printf("edge    ");
  for (i = 0; i < 4; i++) {
    rc = gpio_set_edge(pins[i], "rising");
    printf(" %2d", rc);
  }
  printf("\n");
  printf("low     ");
  for (i = 0; i < 4; i++) {
    rc = gpio_set_active_low(pins[i], 0);
    printf(" %2d", rc);
  }
  printf("\n");
  printf("fds     ");
  for (i = 0; i < 4; i++) {
    fds[i] = gpio_fd_open(pins[i]);
    printf(" %2d", fds[i]);
  }
  printf("\n");
  printf("waiting 300 sec for event\n");
  while (1) {
    wait_event(fds);
    usleep(50000);
  }
}
```