user: 下面的汇编指令对应的C源代码是什么：

```asm
<searchwhatis>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  movabs $0xffffeefefffffdff,%r13
  push   %r12
  movabs $0xffffeffefffffdff,%r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  sub    $0x148,%rsp
  mov    D7(%rip),%rbp
  mov    %rsi,0x18(%rsp)
  mov    %rdx,0x20(%rsp)
  mov    %rcx,0x28(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x138(%rsp)
  xor    %eax,%eax
  lea    0x30(%rsp),%rax
  mov    %rax,(%rsp)
L155:
  mov    %rbx,%rdi
  call   <fgetc@plt>
  movl   $0x1,0x10(%rsp)
  mov    %eax,%r15d
  movl   $0x0,0xc(%rsp)
  cmp    $0x2c,%r15d
  jbe    L379
L40:
  mov    %r15d,%eax
  and    $0xfffffffb,%eax
  cmp    $0x28,%eax
  je     L412
  nopw   0x0(%rax,%rax,1)
L82:
  mov    (%rsp),%r14
  cmp    $0xa,%r15d
  je     L237
  nopw   0x0(%rax,%rax,1)
L87:
  cmp    %r15d,0x0(%rbp)
  je     L251
  lea    0x12f(%rsp),%rax
  cmp    %rax,%r14
  jae    L342
  mov    %r15b,(%r14)
  add    $0x1,%r14
L342:
  mov    %rbx,%rdi
  call   <getc@plt>
  mov    %eax,%r15d
  cmp    $0x2c,%eax
  ja     L87
  bt     %rax,%r13
  jae    L251
  cmp    $0xa,%eax
  jne    L87
L237:
  movb   $0x0,0x17(%rsp)
L249:
  mov    0x10(%rsp),%ecx
  movb   $0x0,(%r14)
  test   %ecx,%ecx
  jne    L223
L129:
  mov    0x18(%rsp),%rsi
  mov    (%rsp),%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  mov    $0x1,%eax
  cmovne 0xc(%rsp),%eax
  cmpb   $0x0,0x17(%rsp)
  mov    %eax,0xc(%rsp)
  je     L162
  movl   $0x0,0x10(%rsp)
  cmp    %r15d,0x0(%rbp)
  je     L244
  cmp    $0x2c,%r15d
  ja     L40
L379:
  bt     %r15,%r12
  jb     L40
  mov    %rbx,%rdi
  call   <fgetc@plt>
  mov    %eax,%r15d
  cmp    $0x2c,%eax
  jbe    L379
  mov    %r15d,%eax
  and    $0xfffffffb,%eax
  cmp    $0x28,%eax
  jne    L82
L412:
  mov    (%rsp),%r14
  mov    0x10(%rsp),%ecx
  cmp    $0x28,%r15d
  setne  0x17(%rsp)
  movb   $0x0,(%r14)
  test   %ecx,%ecx
  je     L129
  cs nopw 0x0(%rax,%rax,1)
L223:
  mov    (%rsp),%rsi
  lea    D0(%rip),%rdi
  call   <strcpy@plt>
  jmp    L129
  nopl   (%rax)
L251:
  cmp    $0x28,%r15d
  setne  %sil
  cmp    $0xa,%r15d
  setne  %al
  and    %eax,%esi
  mov    %sil,0x17(%rsp)
  jmp    L249
L162:
  cmp    $0x28,%r15d
  je     L190
  mov    0x0(%rbp),%ecx
  cmp    %ecx,%r15d
  je     L244
L297:
  cmp    $0xa,%ecx
  jne    L155
  jmp    L244
  nopl   0x0(%rax,%rax,1)
L190:
  lea    D94(%rip),%rax
  mov    %rax,%r14
L401:
  mov    %rbx,%rdi
  call   <fgetc@plt>
  cmp    $0x29,%eax
  je     L114
  mov    0x0(%rbp),%edx
  cmp    $0xa,%eax
  je     L128
  cmp    %eax,%edx
  je     L296
  lea    -0x41(%rax),%ecx
  lea    0x20(%rax),%edx
  cmp    $0x1a,%ecx
  mov    %r14,%rcx
  cmovb  %edx,%eax
  add    $0x1,%rcx
  mov    %rcx,%r14
  mov    %al,-0x1(%rcx)
  lea    D10(%rip),%rax
  cmp    %rax,%rcx
  je     L123
  jmp    L401
  xchg   %ax,%ax
L194:
  mov    0x0(%rbp),%edx
  cmp    $0xa,%eax
  je     L128
  cmp    %eax,%edx
  je     L296
L123:
  mov    %rbx,%rdi
  call   <fgetc@plt>
  cmp    $0x29,%eax
  jne    L194
  movb   $0x0,D10(%rip)
  mov    0x0(%rbp),%eax
L177:
  cmp    $0x29,%eax
  jne    L64
  jmp    L384
  nopw   0x0(%rax,%rax,1)
L380:
  cmp    $0xa,%eax
  je     L428
L64:
  mov    %rbx,%rdi
  call   <getc@plt>
  mov    0x0(%rbp),%ecx
  cmp    %eax,%ecx
  jne    L380
L384:
  mov    0xc(%rsp),%eax
  test   %eax,%eax
  je     L244
  mov    0x20(%rsp),%rax
  lea    D0(%rip),%rcx
  mov    %rcx,(%rax)
  mov    0x28(%rsp),%rax
  lea    D94(%rip),%rcx
  mov    %rcx,(%rax)
  jmp    L244
  nopl   0x0(%rax,%rax,1)
L428:
  mov    0xc(%rsp),%edx
  test   %edx,%edx
  je     L297
  mov    0x20(%rsp),%rax
  lea    D0(%rip),%rdx
  mov    %rdx,(%rax)
  mov    0x28(%rsp),%rax
  lea    D94(%rip),%rdx
  mov    %rdx,(%rax)
  cmp    $0xa,%ecx
  je     L244
L323:
  mov    0x138(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L327
  mov    0xc(%rsp),%eax
  add    $0x148,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L128:
  movb   $0x0,(%r14)
  cmp    $0xa,%edx
  jne    L155
  jmp    L244
  nopw   0x0(%rax,%rax,1)
L114:
  lea    D94(%rip),%rdx
  movb   $0x0,(%r14)
  mov    0x0(%rbp),%eax
  cmp    %rdx,%r14
  jne    L177
  cmp    $0x29,%eax
  je     L244
  movl   $0x0,0xc(%rsp)
  jmp    L64
L296:
  movb   $0x0,(%r14)
L244:
  movl   $0xffffffff,0xc(%rsp)
  jmp    L323
L327:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int searchwhatis(FILE *wf, char *title, char **ppage, char **psection) {
  static char page[256], section[32];
  char alias[256];
  int found = 0;
  int c;
  do {
    int first = 1;
    char *pc = section;
    c = fgetc(wf);
    do {
      char *pa = alias;
      while (c == ' ' || c == '\t' || c == ',')
        c = fgetc(wf);
      while (c != ' ' && c != '\t' && c != ',' && c != '(' && c != '\n' && c != EOF) {
        if (pa < ((alias) + (sizeof(alias) / sizeof((alias)[0]))) - 1)
          *pa++ = c;
        c = getc(wf);
      }
      *pa = 0;
      if (first) {
        strcpy(page, alias);
        first = 0;
      }
      if (strcmp(alias, title) == 0)
        found = 1;
    } while (c != '(' && c != '\n' && c != EOF);
    if (c != '(') {
      found = 0;
    } else {
      while ((c = fgetc(wf)) != ')' && c != '\n' && c != EOF) {
        if ('A' <= c && c <= 'Z')
          c = c - 'A' + 'a';
        if (pc < ((section) + (sizeof(section) / sizeof((section)[0]))) - 1)
          *pc++ = c;
      }
      *pc = 0;
      if (c != ')' || pc == section)
        found = 0;
    }
    while (c != EOF && c != '\n')
      c = getc(wf);
  } while (!found && c != EOF);
  if (found) {
    *ppage = page;
    *psection = section;
  }
  return c == EOF ? -1 : found;
}
```