コード例 #1
0
        protected override void writeAsm(EndianBinaryWriter stream, AddressMapper addressMapper, List <MapDescriptor> mapDescriptors)
        {
            var tableAddr = writeTable(mapDescriptors);

            PowerPcAsm.Pair16Bit v = PowerPcAsm.make16bitValuePair((UInt32)tableAddr);

            // --- Update Table Addr ---
            stream.Seek(addressMapper.toFileAddress((BSVAddr)0x801cca98), SeekOrigin.Begin);
            // mulli r0,r3,0x38 ->  mulli r0,r3,0x04
            stream.Write(PowerPcAsm.mulli(0, 3, 0x04));
            // r3 <- 0x80428e50 ->  r3 <- tableAddr
            stream.Write(PowerPcAsm.lis(3, v.upper16Bit)); stream.Write(PowerPcAsm.addi(3, 3, v.lower16Bit));
            stream.Seek(0x4, SeekOrigin.Current);
            // lwz r3,0x10(r3)  ->  lwz r3,0x0(r3)
            stream.Write(PowerPcAsm.lwz(3, 0, 3));

            // --- ASM hack: Use the rule set from map instead of from global setting ---
            var ruleSetFromMapRoutine = allocate(writeRuleSetFromMapRoutine(addressMapper, (VAVAddr)0), "writeRuleSetFromMapRoutine");

            stream.Seek(addressMapper.toFileAddress(ruleSetFromMapRoutine), SeekOrigin.Begin);
            stream.Write(writeRuleSetFromMapRoutine(addressMapper, ruleSetFromMapRoutine)); // re-write the routine again since now we know where it is located in the main dol

            var virtualPos = addressMapper.toVersionAgnosticAddress((BSVAddr)0x8007e13c);

            stream.Seek(addressMapper.toFileAddress(virtualPos), SeekOrigin.Begin);
            // lha r3,0x3c(r30)  -> bl ruleSetFromMapRoutine
            stream.Write(PowerPcAsm.bl(virtualPos, ruleSetFromMapRoutine));
            // cmpwi r23,0x0     -> lha r3,0x3c(r30)
            stream.Write(PowerPcAsm.lha(3, 0x3c, 30));
            // lha r0,0x28(r30)  -> cmpwi r23,0x0
            stream.Write(PowerPcAsm.cmpwi(23, 0x0));
            // stw r25,0x53f4(r29) -> lha r0,0x28(r30)
            stream.Write(PowerPcAsm.lha(0, 0x28, 30));
        }