user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %r12
  mov    $0xf4,%ecx
  mov    %rsi,%r12
  push   %rbp
  mov    %edi,%ebp
  push   %rbx
  sub    $0x810,%rsp
  movdqa D23(%rip),%xmm0
  mov    %fs:0x28,%rax
  mov    %rax,0x808(%rsp)
  xor    %eax,%eax
  lea    0x60(%rsp),%rdi
  mov    %rsp,%rbx
  movaps %xmm0,(%rsp)
  movdqa D19(%rip),%xmm0
  movaps %xmm0,0x10(%rsp)
  movdqa D66(%rip),%xmm0
  movaps %xmm0,0x20(%rsp)
  movdqa D83(%rip),%xmm0
  rep stos %rax,%es:(%rdi)
  mov    %rbx,%rdi
  movaps %xmm0,0x30(%rsp)
  movdqa D54(%rip),%xmm0
  movaps %xmm0,0x40(%rsp)
  movdqa D4(%rip),%xmm0
  movaps %xmm0,0x50(%rsp)
  call   <strlen@plt>
  cmp    $0x1,%ebp
  jle    L30
  mov    0x8(%r12),%rcx
  cmpb   $0x0,(%rcx)
  jne    L43
L30:
  movzbl (%rsp),%edi
  test   %dil,%dil
  je     L66
  lea    D71(%rip),%r12
  lea    D0(%rip),%rbp
  nopw   0x0(%rax,%rax,1)
L16:
  call   <isascii@plt>
  movzbl (%rbx),%esi
  mov    %rbp,%rdi
  test   %rax,%rax
  jne    L1
  mov    %r12,%rdi
L1:
  call   <printf@plt>
  movzbl 0x1(%rbx),%edi
  add    $0x1,%rbx
  test   %dil,%dil
  jne    L16
L66:
  mov    0x808(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L52
  add    $0x810,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L43:
  lea    D40(%rip),%rdx
  mov    %eax,%esi
  mov    %rbx,%rdi
  call   <snprintf@plt>
  jmp    L30
L52:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: label: D23
type: byte[16]
name: disassemble_data
arguments: label: D19
type: byte[16]
name: disassemble_data
arguments: label: D66
type: byte[16]
name: disassemble_data
arguments: label: D83
type: byte[16]
name: disassemble_data
arguments: label: D54
type: byte[16]
name: disassemble_data
arguments: label: D4
type: byte[16]
name: disassemble_data
arguments: label: D71
type: string
name: disassemble_data
arguments: label: D0
type: string
name: disassemble_data
arguments: label: D40
type: string

tool: {"D23": [0x61,0x62,0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f,0x70]}

tool: {"D19": [0x71,0x72,0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7a,0x31,0x32,0x33,0x34,0x35,0x36]}

tool: {"D66": [0x37,0x38,0x39,0x30,0x60,0x7e,0x21,0x40,0x23,0x24,0x25,0x5e,0x26,0x2a,0x28,0x29]}

tool: {"D83": [0x2d,0x5f,0x3d,0x2b,0x41,0x42,0x43,0x44,0x45,0x46,0x47,0x48,0x49,0x4a,0x4b,0x4c]}

tool: {"D54": [0x4d,0x4e,0x4f,0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57,0x58,0x59,0x5a,0x3b,0x2c]}

tool: {"D4": [0x2e,0x2f,0x7c,0x7b,0x7d,0x5b,0x5d,0x27,0x22,0x5c,0x00,0x00,0x00,0x00,0x00,0x00]}

tool: D71: ### This char is NOT ASCII: [[%c]]

tool: D0: This char is ASCII: [%c]


tool: D40: %s

assistant: ```c
int main(int argc, char *argv[]) {
  unsigned char str_buff[2048] = "abcdefghijklmnopqrstuvwxyz1234567890`~!@#$%^&*()-_=+ABCDEFGHIJKLMNOPQRSTUVWXYZ;,./|{}[]'\"\\";
  unsigned char *p = str_buff;
  int str_len = (int)strlen(str_buff);
  if (argc > 1 && 0 != argv[1][0]) {
    snprintf(p, str_len, "%s", argv[1]);
  }
  while (*p) {
    if (isascii(*p)) {
      printf("This char is ASCII: [%c]\n", *p);
    } else {
      printf("### This char is NOT ASCII: [[%c]]", *p);
    }
    p++;
  }
  return 0;
}
```