user: What would the C source look like for the assembly code provided here:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r12
  push   %rbx
  lea    -0x20000(%rsp),%r11
L39:
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  cmp    %r11,%rsp
  jne    L39
  sub    $0x20,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x18(%rbp)
  xor    %eax,%eax
  lea    -0x10020(%rbp),%rax
  mov    $0x10000,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  lea    D30(%rip),%rax
  mov    %rax,%rsi
  lea    D24(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x20028(%rbp)
  mov    -0x20028(%rbp),%rdx
  lea    -0x20020(%rbp),%rax
  mov    %rdx,%rcx
  mov    $0x10000,%edx
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    -0x20028(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  movl   $0x1,-0x20030(%rbp)
  jmp    L18
L43:
  movl   $0x1,-0x2002c(%rbp)
  jmp    L22
L48:
  mov    -0x20030(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x2002c(%rbp),%eax
  add    $0x1,%eax
  movslq %eax,%rcx
  movslq %edx,%rax
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rcx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%r9d
  mov    -0x20030(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x2002c(%rbp),%eax
  movslq %eax,%rcx
  movslq %edx,%rax
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rcx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%r8d
  mov    -0x20030(%rbp),%eax
  lea    0x1(%rax),%edx
  mov    -0x2002c(%rbp),%eax
  sub    $0x1,%eax
  movslq %eax,%rcx
  movslq %edx,%rax
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rcx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%edi
  mov    -0x2002c(%rbp),%eax
  add    $0x1,%eax
  movslq %eax,%rdx
  mov    -0x20030(%rbp),%eax
  cltq
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rdx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%r11d
  mov    -0x2002c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x20030(%rbp),%eax
  cltq
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rdx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%r10d
  mov    -0x2002c(%rbp),%eax
  sub    $0x1,%eax
  movslq %eax,%rdx
  mov    -0x20030(%rbp),%eax
  cltq
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rdx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%ecx
  mov    -0x20030(%rbp),%eax
  lea    -0x1(%rax),%edx
  mov    -0x2002c(%rbp),%eax
  add    $0x1,%eax
  movslq %eax,%rsi
  movslq %edx,%rax
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rsi,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%edx
  mov    -0x20030(%rbp),%eax
  lea    -0x1(%rax),%esi
  mov    -0x2002c(%rbp),%eax
  movslq %eax,%rbx
  movslq %esi,%rax
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %rbx,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%esi
  mov    -0x20030(%rbp),%eax
  lea    -0x1(%rax),%ebx
  mov    -0x2002c(%rbp),%eax
  sub    $0x1,%eax
  movslq %eax,%r12
  movslq %ebx,%rax
  shl    $0x8,%rax
  lea    -0x10(%rax),%rax
  add    %rbp,%rax
  add    %r12,%rax
  sub    $0x20010,%rax
  movzbl (%rax),%eax
  movzbl %al,%eax
  sub    $0x8,%rsp
  push   %r9
  push   %r8
  push   %rdi
  mov    %r11d,%r9d
  mov    %r10d,%r8d
  mov    %eax,%edi
  call   <smoothing@plt>
  add    $0x20,%rsp
  mov    -0x2002c(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x20030(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x8,%rdx
  lea    -0x10(%rdx),%rbx
  lea    (%rbx,%rbp,1),%rdx
  add    %rcx,%rdx
  sub    $0x10010,%rdx
  mov    %al,(%rdx)
  addl   $0x1,-0x2002c(%rbp)
L22:
  cmpl   $0xfe,-0x2002c(%rbp)
  jle    L48
  addl   $0x1,-0x20030(%rbp)
L18:
  cmpl   $0xfe,-0x20030(%rbp)
  jle    L43
  lea    D6(%rip),%rax
  mov    %rax,%rsi
  lea    D23(%rip),%rax
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x20028(%rbp)
  mov    -0x20028(%rbp),%rdx
  lea    -0x10020(%rbp),%rax
  mov    %rdx,%rcx
  mov    $0x10000,%edx
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    -0x20028(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  lea    D27(%rip),%rax
  mov    %rax,%rdi
  call   <system@plt>
  mov    $0x0,%eax
  mov    -0x18(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L21
  call   <__stack_chk_fail@plt>
L21:
  lea    -0x10(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %rbp
  ret
```

tool_calls: name: retrieve_data
arguments: data_tag: D30
type_guessed: string
name: retrieve_data
arguments: data_tag: D24
type_guessed: string
name: retrieve_data
arguments: data_tag: D6
type_guessed: string
name: retrieve_data
arguments: data_tag: D23
type_guessed: string
name: retrieve_data
arguments: data_tag: D27
type_guessed: string

tool: D30: rb

tool: D24: girl_impulse.dat

tool: D6: wb

tool: D23: girl_smoothing_ex2-2.dat

tool: D27: zsh plot_ex2-2.sh

assistant: ```c
int main() {
  unsigned char image[256][256];
  unsigned char image_w[256][256] = {0};
  FILE *fp;
  fp = fopen("girl_impulse.dat", "rb");
  fread(image, sizeof(unsigned char), 256 * 256, fp);
  fclose(fp);
  for (int i = 1; i < 256 - 1; i++) {
    for (int j = 1; j < 256 - 1; j++) {
      image_w[i][j] = smoothing(image[i - 1][j - 1], image[i - 1][j], image[i - 1][j + 1], image[i][j - 1], image[i][j], image[i][j + 1], image[i + 1][j - 1], image[i + 1][j], image[i + 1][j + 1]);
    }
  }
  fp = fopen("girl_smoothing_ex2-2.dat", "wb");
  fwrite(image_w, sizeof(unsigned char), 256 * 256, fp);
  fclose(fp);
  system("zsh plot_ex2-2.sh");
  return 0;
}
```