user: 下面的汇编指令对应的C源代码是什么:

```asm
<main>:
  endbr64
  push   %rbp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x48,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  cmp    $0x4,%edi
  je     L25
  xor    %edi,%edi
  call   <usage@plt>
L25:
  mov    0x18(%rbx),%rdi
  lea    0xc(%rsp),%rdx
  lea    D49(%rip),%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L320
L218:
  mov    0xc(%rsp),%eax
  test   %eax,%eax
  jle    L287
  lea    -0x40(%rax),%edx
  and    $0xffffffbf,%edx
  je     L234
  cmp    $0x20,%eax
  jg     L287
L234:
  mov    0x18(%rbx),%rdi
  mov    $0x68,%esi
  call   <strchr@plt>
  test   %rax,%rax
  je     L375
  mov    0xc(%rsp),%eax
  cmp    $0x20,%eax
  jg     L387
  lea    D65(%rip),%rbp
L305:
  mov    0x8(%rbx),%rdi
  lea    0x10(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L99
L265:
  mov    0x10(%rbx),%rdi
  lea    0x14(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L49
L113:
  mov    0xc(%rsp),%ecx
  cmp    $0x1f,%ecx
  jg     L246
  je     L388
  mov    $0x1,%ebx
  shl    %cl,%ebx
  cmp    %ebx,0x10(%rsp)
  jge    L357
L274:
  cmp    %ebx,0x14(%rsp)
  jl     L246
L170:
  lea    D91(%rip),%rdi
  call   <usage@plt>
L246:
  mov    0x10(%rsp),%esi
  xor    0x14(%rsp),%esi
L15:
  mov    %rbp,%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L328
L287:
  lea    D9(%rip),%rdi
  call   <usage@plt>
  jmp    L234
L387:
  cmp    $0x40,%eax
  je     L198
L176:
  cmp    $0x80,%eax
  je     L219
L328:
  xor    %edi,%edi
  call   <exit@plt>
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L161
  add    $0x48,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  ret
L320:
  lea    D15(%rip),%rdi
  call   <usage@plt>
  jmp    L218
L375:
  cmpl   $0x80,0xc(%rsp)
  je     L325
L17:
  mov    0xc(%rsp),%eax
  cmp    $0x20,%eax
  jle    L193
  cmp    $0x40,%eax
  jne    L176
  lea    D81(%rip),%rbp
L343:
  mov    0x8(%rbx),%rdi
  lea    0x18(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L282
L280:
  mov    0x10(%rbx),%rdi
  lea    0x1c(%rsp),%rdx
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L126
L135:
  mov    0x18(%rsp),%esi
  xor    0x1c(%rsp),%esi
  jmp    L15
L193:
  lea    D115(%rip),%rbp
  jmp    L305
L388:
  lea    D64(%rip),%rdi
  call   <usage@plt>
  cmpl   $0x20,0xc(%rsp)
  je     L246
  jmp    L170
L49:
  lea    D137(%rip),%rdi
  call   <usage@plt>
  jmp    L113
L99:
  lea    D12(%rip),%rdi
  call   <usage@plt>
  jmp    L265
L198:
  lea    D135(%rip),%rbp
  jmp    L343
L219:
  mov    0x8(%rbx),%rdi
  lea    0x20(%rsp),%rsi
  call   <read_128@plt>
  test   %rax,%rax
  je     L55
L178:
  mov    0x10(%rbx),%rdi
  lea    0x28(%rsp),%rsi
  call   <read_128@plt>
  test   %rax,%rax
  je     L7
L36:
  mov    0x20(%rsp),%rax
  lea    0x30(%rsp),%rdi
  xor    0x28(%rsp),%rax
  mov    %rax,0x30(%rsp)
  call   <print_128@plt>
  jmp    L328
L325:
  xor    %edi,%edi
  call   <usage@plt>
  jmp    L17
L126:
  lea    D137(%rip),%rdi
  call   <usage@plt>
  jmp    L135
L282:
  lea    D12(%rip),%rdi
  call   <usage@plt>
  jmp    L280
L7:
  lea    D137(%rip),%rdi
  call   <usage@plt>
  jmp    L36
L55:
  lea    D12(%rip),%rdi
  call   <usage@plt>
  jmp    L178
L161:
  call   <__stack_chk_fail@plt>
L357:
  lea    D64(%rip),%rdi
  call   <usage@plt>
  cmpl   $0x20,0xc(%rsp)
  je     L246
  jmp    L274
```

tool_calls: name: parse_data
arguments: data_label: D49
type_infered: string
name: parse_data
arguments: data_label: D65
type_infered: string
name: parse_data
arguments: data_label: D91
type_infered: string
name: parse_data
arguments: data_label: D9
type_infered: string
name: parse_data
arguments: data_label: D15
type_infered: string
name: parse_data
arguments: data_label: D81
type_infered: string
name: parse_data
arguments: data_label: D115
type_infered: string
name: parse_data
arguments: data_label: D64
type_infered: string
name: parse_data
arguments: data_label: D137
type_infered: string
name: parse_data
arguments: data_label: D12
type_infered: string
name: parse_data
arguments: data_label: D135
type_infered: string

tool: D49: %d

tool: D65: %x

tool: D91: b is too large


tool: D9: Bad w

tool: D15: Bad w


tool: D81: %llu

tool: D115: %u

tool: D64: a is too large


tool: D137: Bad b


tool: D12: Bad a


tool: D135: %llx

assistant: ```c
int main(int argc, char **argv) {
  int hex, al, bl, w;
  uint32_t a, b, c, top;
  uint64_t a64, b64, c64;
  uint64_t a128[2], b128[2], c128[2];
  char *format;
  if (argc != 4)
    usage(NULL);
  if (sscanf(argv[3], "%d", &w) == 0)
    usage("Bad w\n");
  if (w <= 0 || (w > 32 && w != 64 && w != 128))
    usage("Bad w");
  hex = (strchr(argv[3], 'h') != NULL);
  if (!hex && w == 128)
    usage(NULL);
  if (w <= 32) {
    format = (hex) ? "%x" : "%u";
    if (sscanf(argv[1], format, &a) == 0)
      usage("Bad a\n");
    if (sscanf(argv[2], format, &b) == 0)
      usage("Bad b\n");
    if (w < 32) {
      top = (w == 31) ? 0x80000000 : (1 << w);
      if (w != 32 && a >= top)
        usage("a is too large\n");
      if (w != 32 && b >= top)
        usage("b is too large\n");
    }
    c = a ^ b;
    printf(format, c);
    printf("\n");
  } else if (w == 64) {
    format = (hex) ? "%llx" : "%llu";
    if (sscanf(argv[1], format, &a64) == 0)
      usage("Bad a\n");
    if (sscanf(argv[2], format, &b64) == 0)
      usage("Bad b\n");
    c64 = a64 ^ b64;
    printf(format, c64);
    printf("\n");
  } else if (w == 128) {
    if (read_128(argv[1], a128) == 0)
      usage("Bad a\n");
    if (read_128(argv[2], b128) == 0)
      usage("Bad b\n");
    c128[0] = a128[0] ^ b128[0];
    c128[1] = a128[1] ^ b128[1];
    print_128(c128);
  }
  exit(0);
}
```