private List <UInt32> writeSubroutineForceFetchFakeVentureCard(VAVAddr fakeVentureCard)
{
PowerPcAsm.Pair16Bit v = PowerPcAsm.make16bitValuePair((UInt32)fakeVentureCard);
// precondition: r3 is ChanceCardUI *
// ChanceCardUI->field_0x34 is ChanceBoard *
// ChanceBoard->field_0x158 is current venture card id
var asm = new List <UInt32>();
asm.Add(PowerPcAsm.lis(6, v.upper16Bit)); // \
asm.Add(PowerPcAsm.addi(6, 6, v.lower16Bit)); // / r6 <- forceVentureCardVariable
asm.Add(PowerPcAsm.lwz(4, 0x0, 6)); // | r4 <- forceVentureCard
asm.Add(PowerPcAsm.cmpwi(4, 0x0)); // | if(forceVentureCard != 0)
asm.Add(PowerPcAsm.beq(7)); // | {
asm.Add(PowerPcAsm.lwz(5, 0x34, 3)); // | r5 <- ChanceCardUI.ChanceBoard
asm.Add(PowerPcAsm.stw(4, 0x158, 5)); // | ChanceBoard.currentVentureCardId <- r4
asm.Add(PowerPcAsm.li(5, 0)); // |\ forceVentureCard <- 0
asm.Add(PowerPcAsm.stw(5, 0x0, 6)); // |/
asm.Add(PowerPcAsm.li(8, 0x0)); // | r8 <- 0 (the venture card is initialized)
asm.Add(PowerPcAsm.blr()); // | return r4 and r8
// | }
asm.Add(PowerPcAsm.li(4, -0x1)); // | r4 <- -1
asm.Add(PowerPcAsm.li(8, 0x3)); // | r8 <- 3 (the venture card is continued to be executed)
asm.Add(PowerPcAsm.blr()); // | return r4 and r8
return(asm);
}
/// <summary>
/// Write the subroutine which takes a compressed venture card table as input and writes it into ventureCardDecompressedTableAddr
/// </summary>
/// <param name="ventureCardDecompressedTableAddr">The address for the reserved memory space to store the decompressed venture card table in</param>
private List <UInt32> writeSubroutine(VAVAddr ventureCardDecompressedTableAddr)
{
var asm = new List <UInt32>();
PowerPcAsm.Pair16Bit ventureCardTableAddrPair = PowerPcAsm.make16bitValuePair((UInt32)ventureCardDecompressedTableAddr);
///
/// assume:
/// r6 = ventureCardCompressedTableAddr
///
/// variables:
/// r4 = ventureCardId
/// r5 = ventureCardCompressedTableAddr
/// r6 = ventureCardDecompressedTableAddr
/// r7 = ventureCardCompressedWord
/// r8 = bitIndex
/// r0 = tmp / currentByte
///
/// return:
/// r6 = ventureCardDecompressedTableAddr
///
asm.Add(PowerPcAsm.li(4, 0)); // ventureCardId = 0
asm.Add(PowerPcAsm.mr(5, 6)); // r6 is ventureCardCompressedTableAddr at this point. Copy it to r5 with which we will be working
asm.Add(PowerPcAsm.lis(6, ventureCardTableAddrPair.upper16Bit)); // \ load the ventureCardDecompressedTableAddr into r6. This address is
asm.Add(PowerPcAsm.addi(6, 6, ventureCardTableAddrPair.lower16Bit)); // / where we will store the decompressed venture card table.
int whileVentureCardIdSmaller128 = asm.Count; // do {
{ //
asm.Add(PowerPcAsm.li(0, 0)); // \ load the next compressed word from ventureCardCompressedTableAddr
asm.Add(PowerPcAsm.lwzx(7, 5, 0)); // / into r7. We will decompress the venture card table word by word.
asm.Add(PowerPcAsm.li(8, 31)); // bitIndex = 31
int whileBitIndexGreaterEqual32 = asm.Count; // do
{ // {
asm.Add(PowerPcAsm.mr(0, 7)); // get the current compressed word
asm.Add(PowerPcAsm.srw(0, 0, 8)); // shift it bitIndex times to the right
asm.Add(PowerPcAsm.andi(0, 0, 1)); // retrieve the lowest bit of it -> r0 contains the decompressed venture card byte now.
asm.Add(PowerPcAsm.stbx(0, 4, 6)); // store it into ventureCardDecompressedTableAddr[ventureCardId]
asm.Add(PowerPcAsm.subi(8, 8, 1)); // bitIndex--
asm.Add(PowerPcAsm.addi(4, 4, 1)); // ventureCardId++
asm.Add(PowerPcAsm.cmpwi(8, 0)); //
asm.Add(PowerPcAsm.bge(asm.Count, whileBitIndexGreaterEqual32)); // } while(bitIndex >= 0)
} //
asm.Add(PowerPcAsm.addi(5, 5, 4)); // ventureCardCompressedTableAddr += 4
asm.Add(PowerPcAsm.cmpwi(4, 128)); //
asm.Add(PowerPcAsm.blt(asm.Count, whileVentureCardIdSmaller128)); // } while(ventureCardId < 128)
} //
asm.Add(PowerPcAsm.li(4, 0)); // \ reset r4 = 0
asm.Add(PowerPcAsm.li(5, 0)); // / reset r5 = 0
asm.Add(PowerPcAsm.blr()); // return
return(asm);
}
private List <UInt32> writeGetTextureForCustomSquareRoutine(byte register_textureType, byte register_squareType)
{
var asm = new List <UInt32>();
asm.Add(PowerPcAsm.li(register_textureType, 0x1)); // textureType = 1
asm.Add(PowerPcAsm.cmpwi(register_squareType, 0x2e)); // if(squareType == 0x2e)
asm.Add(PowerPcAsm.beq(2)); // {
asm.Add(PowerPcAsm.blr()); // return textureType;
// } else {
asm.Add(PowerPcAsm.li(register_textureType, 0x5)); // textureType = 5
asm.Add(PowerPcAsm.blr()); // return textureType;
// }
return(asm);
}
private List <UInt32> writeSubroutineGetNumMapsInZone(List <MapDescriptor> mapDescriptors)
{
// precondition: r3 _ZONE_TYPE
// postcondition: r3 num maps
var asm = new List <UInt32>();
for (short i = 0; i < 6; i++)
{
asm.Add(PowerPcAsm.cmpwi(3, i));
asm.Add(PowerPcAsm.bne(3));
asm.Add(PowerPcAsm.li(3, (short)(from m in mapDescriptors where m.Zone == i && m.MapSet == 0 select m).Count()));
asm.Add(PowerPcAsm.blr());
}
asm.Add(PowerPcAsm.blr());
return(asm);
}
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);
}
