private List <UInt32> writeRuleSetFromMapRoutine(AddressMapper addressMapper, VAVAddr routineStartAddress)
{
var Game_GetRuleFlag = addressMapper.toVersionAgnosticAddress((BSVAddr)0x801cca98);
// precondition: r24 is mapId
// precondition: r25 is global rule set which we are gonna use to store the linkreturn
var asm = new List <UInt32>();
asm.Add(PowerPcAsm.mflr(25));
asm.Add(PowerPcAsm.mr(3, 24)); // r3 <- r24
asm.Add(PowerPcAsm.bl(routineStartAddress, asm.Count, Game_GetRuleFlag)); // r3 <- bl Game_GetRuleFlag(r3)
asm.Add(PowerPcAsm.stw(3, 0x53f4, 29)); // gameRule <- r3
asm.Add(PowerPcAsm.mtlr(25));
asm.Add(PowerPcAsm.blr()); // return
return(asm);
}
private List <UInt32> writeSubroutineInitMapIdsForMapIcons(AddressMapper addressMapper, VAVAddr entryAddr)
{
var JUtility_memset = addressMapper.toVersionAgnosticAddress((BSVAddr)0x80004714);
// precondition: r3 is newly created map icon array
// r16 is the amount of map ids in the array (size / 4)
// r24 is unused
// postcondition: r24 is the map icon array
var asm = new List <UInt32>();
asm.Add(PowerPcAsm.mflr(24)); // save the link register
asm.Add(PowerPcAsm.li(4, -1)); // fill with 0xff
asm.Add(PowerPcAsm.rlwinm(5, 16, 0x3, 0x0, 0x1d)); // get the size of the array
asm.Add(PowerPcAsm.bl(entryAddr, asm.Count, JUtility_memset)); // call JUtility_memset(array*, 0xff, array.size)
asm.Add(PowerPcAsm.mtlr(24)); // restore the link register
asm.Add(PowerPcAsm.mr(24, 3)); // move array* to r24
asm.Add(PowerPcAsm.blr()); // return
return(asm);
}
