// 
// sub_180018530 from 0x180018530 to 0x18001870a (474 bytes)
// 
// 5 xrefs:
// > cocos2d::extension::CCHttpClient::send @ 0x180017ad7
// > <???> @ 0x18002f29c
// > <???> @ 0x18002f2e0
// > <???> @ 0x18002f2f0
// > <???> @ 0x18004aaf4
// 
// This function is hookable on this platform!
// 
// Using BromaIDA 8.0.0 @ https://github.com/Stazzical/BromaIDA
// Using bindings at commit ba9f177b at Thu Jul 16 22:52:06 2026 from https://github.com/geode-sdk/bindings
// 

void __fastcall sub_180018530(_QWORD *a1)
{
  unsigned __int64 v2; // rbx
  unsigned __int64 v3; // rcx
  unsigned __int64 v4; // r12
  size_t v5; // rcx
  void *v6; // rax
  _QWORD *v7; // r14
  __int64 v8; // rdi
  unsigned __int64 v9; // rbx
  __int64 v10; // r15
  size_t v11; // rdi
  const void *v12; // rdx
  char *v13; // rdi
  size_t v14; // r8
  char *v15; // rcx
  void *v16; // rcx

  v2 = 1;
  v3 = a1[2];
  if ( v3 )
    v2 = v3;
  while ( v2 == v3 || v2 < 8 )
  {
    if ( 0x3FFFFFFFFFFFFFFLL - v2 < v2 )
      sub_180018710(v3, 0x3FFFFFFFFFFFFFFLL);
    v2 *= 2LL;
  }
  v4 = a1[3];
  if ( v2 > 0x1FFFFFFFFFFFFFFFLL )
    goto LABEL_25;
  v5 = 8 * v2;
  if ( 8 * v2 < 0x1000 )
  {
    if ( v5 )
      v7 = operator new(v5);
    else
      v7 = nullptr;
    goto LABEL_15;
  }
  if ( v5 + 39 < v5 )
LABEL_25:
    Concurrency::cancel_current_task();
  v6 = operator new(v5 + 39);
  if ( !v6 )
    goto LABEL_24;
  v7 = (_QWORD *)(((unsigned __int64)v6 + 39) & 0xFFFFFFFFFFFFFFE0uLL);
  *(v7 - 1) = v6;
LABEL_15:
  v8 = a1[2];
  v9 = v2 - v8;
  v10 = 8 * v4;
  v11 = 8 * v8 - 8 * v4;
  memmove(&v7[v4], (const void *)(a1[1] + 8 * v4), v11);
  v12 = (const void *)a1[1];
  v13 = (char *)&v7[v4] + v11;
  if ( v4 > v9 )
  {
    memmove(v13, v12, 8 * v9);
    memmove(v7, (const void *)(8 * v9 + a1[1]), v10 - 8 * v9);
    v15 = (char *)v7 + v10 - 8 * v9;
    v14 = 8 * v9;
  }
  else
  {
    memmove(v13, v12, 8 * v4);
    memset(&v13[v10], 0, 8 * (v9 - v4));
    v14 = 8 * v4;
    v15 = (char *)v7;
  }
  memset(v15, 0, v14);
  v16 = (void *)a1[1];
  if ( v16 )
  {
    if ( (unsigned __int64)(8LL * a1[2]) < 0x1000 )
    {
LABEL_22:
      j_j_free(v16);
      goto LABEL_23;
    }
    if ( (unsigned __int64)v16 - *((_QWORD *)v16 - 1) - 8 <= 0x1F )
    {
      v16 = *((void **)v16 - 1);
      goto LABEL_22;
    }
LABEL_24:
    invalid_parameter_noinfo_noreturn();
  }
LABEL_23:
  a1[2] += v9;
  a1[1] = v7;
}