undefined4 __cdecl16near FUN_0000_059a(undefined2 param_1)

{
  byte *pbVar1;
  byte *pbVar2;
  code *pcVar3;
  undefined2 in_AX;
  undefined2 uVar4;
  int iVar5;
  int iVar6;
  undefined2 in_DX;
  byte *extraout_DX;
  byte *pbVar7;
  byte *pbVar8;
  undefined2 unaff_ES;
  undefined2 unaff_DS;
  undefined in_CF;
  bool bVar9;
  undefined in_ZF;

  *(undefined2 *)FUN_0000_059a = in_DX;
  FUN_0000_03ad();
  FUN_0000_03ad();
  pcVar3 = (code *)swi(0x21);
  uVar4 = (*pcVar3)();
  if (!(bool)in_CF) {
    *(undefined2 *)0x5ac = uVar4;
    do {
      pcVar3 = (code *)swi(0x21);
      (*pcVar3)(register0x00000010);
      if ((bool)in_CF) goto LAB_0000_0618;
      pbVar7 = (byte *)0x5ae;
      iVar5 = 0x10;
      pbVar8 = extraout_DX;
      do {
        if (iVar5 == 0) break;
        iVar5 = iVar5 + -1;
        pbVar2 = pbVar8;
        pbVar8 = pbVar8 + 1;
        pbVar1 = pbVar7;
        pbVar7 = pbVar7 + 1;
        in_CF = *pbVar1 < *pbVar2;
        in_ZF = *pbVar1 == *pbVar2;
      } while ((bool)in_ZF);
    } while (!(bool)in_ZF);
    bVar9 = false;
    pcVar3 = (code *)swi(0x21);
    (*pcVar3)();
    if (!bVar9) {
      iVar6 = 0x10;
      pcVar3 = (code *)swi(0x21);
      iVar5 = (*pcVar3)();
      if ((!bVar9) && (iVar5 == iVar6)) {
        pcVar3 = (code *)swi(0x21);
        (*pcVar3)();
      }
    }
  }
LAB_0000_0618:
  return CONCAT22(in_AX,param_1);
}