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correct some register initializations in IPL HLE. (Just setup global pointers so apploaders don't complain) 

I only know that it makes Luigi's Mansion's apploader stop complaining, and didn't break any games I tested. :)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@4367 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Shawn Hoffman 2009-10-06 23:11:39 +00:00
parent 4c22bea4d4
commit 53de453958
1 changed files with 21 additions and 7 deletions
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18
Source/Core/Core/Src/Boot/Boot_BIOSEmu.cpp
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@ -68,7 +68,8 @@ void CBoot::EmulatedBIOS(bool _bDebug)
Memory::Write_U32(0x4c000064, 0x80000300); // write default DFI Handler: rfi
Memory::Write_U32(0x4c000064, 0x80000800); // write default FPU Handler: rfi
Memory::Write_U32(0x4c000064, 0x80000C00); // write default Syscall Handler: rfi
Memory::Write_U32(0xc2339f3d, 0x8000001C); // game disc
Memory::Write_U32(0xc2339f3d, 0x8000001C); // gamecube game disc magic number
Memory::Write_U32(0x0D15EA5E, 0x80000020); // booted from bootrom. 0xE5207C22 = booted from jtag
Memory::Write_U32(0x01800000, 0x80000028); // Physical Memory Size
@ -84,7 +85,20 @@ void CBoot::EmulatedBIOS(bool _bDebug)
// Load Apploader to Memory - The apploader is hardcoded to begin at byte 9 280 on the disc,
// but it seems like the size can be variable. Compare with yagcd chap 13.
PowerPC::ppcState.gpr[1] = 0x816ffff0; // StackPointer
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bNTSC)
{
DEBUG_LOG(MASTER_LOG, "Call bNTSC");
PowerPC::ppcState.gpr[1] = 0x81566550; // StackPointer, used to be set to 0x816ffff0
PowerPC::ppcState.gpr[2] = 0x81465cc0; // global pointer to Small Data Area 2 Base (haven't seen anything use it...meh)
PowerPC::ppcState.gpr[13] = 0x81465320; // global pointer to Small Data Area Base (Luigi's Mansion's apploader uses it)
}
else
{
DEBUG_LOG(MASTER_LOG, "Call PAL");
PowerPC::ppcState.gpr[1] = 0x815edca8;
PowerPC::ppcState.gpr[2] = 0x814b5b20;
PowerPC::ppcState.gpr[13] = 0x814b4fc0;
}
u32 iAppLoaderOffset = 0x2440; // 0x1c40 - 2MB lower...perhaps used on early GCMs? MYSTERY OLD COMMENT
u32 iAppLoaderEntry = VolumeHandler::Read32(iAppLoaderOffset + 0x10);
u32 iAppLoaderSize = VolumeHandler::Read32(iAppLoaderOffset + 0x14);