user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<main>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %rsi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  cmp    $0x4,%edi
  jne    L118
L38:
  lea    0xc(%rsp),%rdx
  mov    0x18(%rbx),%rdi
  lea    D43(%rip),%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L254
L107:
  mov    0xc(%rsp),%eax
  test   %eax,%eax
  jle    L160
  lea    -0x40(%rax),%edx
  test   $0xffffffbf,%edx
  je     L58
  cmp    $0x20,%eax
  jle    L58
L160:
  lea    D25(%rip),%rdi
  call   <usage@plt>
L58:
  mov    0x18(%rbx),%rdi
  mov    $0x68,%esi
  call   <strchr@plt>
  test   %rax,%rax
  je     L328
  mov    0xc(%rsp),%eax
  cmp    $0x20,%eax
  jle    L354
  cmp    $0x40,%eax
  je     L138
L82:
  cmp    $0x80,%eax
  jne    L277
  lea    0x20(%rsp),%rsi
  mov    0x8(%rbx),%rdi
  call   <read_128@plt>
  test   %rax,%rax
  je     L57
L149:
  lea    0x28(%rsp),%rsi
  mov    0x10(%rbx),%rdi
  call   <read_128@plt>
  test   %rax,%rax
  je     L324
L238:
  mov    0x20(%rsp),%eax
  xor    0x28(%rsp),%eax
  mov    %eax,0x30(%rsp)
  mov    0x24(%rsp),%eax
  xor    0x2c(%rsp),%eax
  mov    %eax,0x34(%rsp)
  lea    0x30(%rsp),%rdi
  call   <print_128@plt>
  jmp    L277
L118:
  mov    $0x0,%edi
  call   <usage@plt>
  jmp    L38
L254:
  lea    D141(%rip),%rdi
  call   <usage@plt>
  jmp    L107
L328:
  cmpl   $0x80,0xc(%rsp)
  je     L247
L92:
  mov    0xc(%rsp),%eax
  cmp    $0x20,%eax
  jle    L42
  cmp    $0x40,%eax
  jne    L82
  lea    D18(%rip),%rbp
  jmp    L133
L247:
  mov    $0x0,%edi
  call   <usage@plt>
  jmp    L92
L354:
  lea    D121(%rip),%rbp
L319:
  lea    0x10(%rsp),%rdx
  mov    0x8(%rbx),%rdi
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L62
L295:
  lea    0x14(%rsp),%rdx
  mov    0x10(%rbx),%rdi
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L321
L72:
  mov    0xc(%rsp),%ecx
  cmp    $0x1f,%ecx
  jg     L270
  je     L240
  mov    $0x1,%ebx
  shl    %cl,%ebx
  cmp    %ebx,0x10(%rsp)
  jge    L89
L337:
  cmp    %ebx,0x14(%rsp)
  jge    L60
L270:
  mov    0x10(%rsp),%esi
  xor    0x14(%rsp),%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
L277:
  mov    $0x0,%edi
  call   <exit@plt>
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L223
  mov    $0x0,%eax
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  ret
L42:
  lea    D79(%rip),%rbp
  jmp    L319
L62:
  lea    D136(%rip),%rdi
  call   <usage@plt>
  jmp    L295
L321:
  lea    D17(%rip),%rdi
  call   <usage@plt>
  jmp    L72
L240:
  mov    $0x80000000,%ebx
L89:
  lea    D110(%rip),%rdi
  call   <usage@plt>
  cmpl   $0x20,0xc(%rsp)
  je     L270
  jmp    L337
L60:
  lea    D94(%rip),%rdi
  call   <usage@plt>
  jmp    L270
L138:
  lea    D86(%rip),%rbp
L133:
  lea    0x18(%rsp),%rdx
  mov    0x8(%rbx),%rdi
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L119
L226:
  lea    0x1c(%rsp),%rdx
  mov    0x10(%rbx),%rdi
  mov    %rbp,%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L34
L177:
  mov    0x18(%rsp),%esi
  xor    0x1c(%rsp),%esi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xa,%edi
  call   <putchar@plt>
  jmp    L277
L119:
  lea    D136(%rip),%rdi
  call   <usage@plt>
  jmp    L226
L34:
  lea    D17(%rip),%rdi
  call   <usage@plt>
  jmp    L177
L57:
  lea    D136(%rip),%rdi
  call   <usage@plt>
  jmp    L149
L324:
  lea    D17(%rip),%rdi
  call   <usage@plt>
  jmp    L238
L223:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_label: D43
type_guessed: string
name: retrieve_data
arguments: data_label: D25
type_guessed: string
name: retrieve_data
arguments: data_label: D141
type_guessed: string
name: retrieve_data
arguments: data_label: D18
type_guessed: string
name: retrieve_data
arguments: data_label: D121
type_guessed: string
name: retrieve_data
arguments: data_label: D79
type_guessed: string
name: retrieve_data
arguments: data_label: D136
type_guessed: string
name: retrieve_data
arguments: data_label: D17
type_guessed: string
name: retrieve_data
arguments: data_label: D110
type_guessed: string
name: retrieve_data
arguments: data_label: D94
type_guessed: string
name: retrieve_data
arguments: data_label: D86
type_guessed: string

tool: D43: %d

tool: D25: Bad w

tool: D141: Bad w


tool: D18: %llu

tool: D121: %x

tool: D79: %u

tool: D136: Bad a


tool: D17: Bad b


tool: D110: a is too large


tool: D94: b is too large


tool: D86: %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);
}
```