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Fix RTC to report the correct system time in Wii and GC titles as reported in Issue 1817

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Modify GetLocalTimeSinceJan1970 to account for DST.
GetGCTime() returns only GC epoch time(used by most Wii titles.)
IPL-DEV subtracts Wii bias before copying to m_RTC(mostly used by homebrew.)

git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6133 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
PerfectInduction 2010-08-26 19:24:47 +00:00
parent d082f50c34
commit aae0e96682
2 changed files with 17 additions and 9 deletions
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12
Source/Core/Common/Src/Timer.cpp
View File

@ -174,15 +174,23 @@ u64 Timer::GetTimeSinceJan1970()
u64 Timer::GetLocalTimeSinceJan1970()
{
time_t sysTime, tzDiff;
time_t sysTime, tzDiff, tzDST;
struct tm * gmTime;
time(&sysTime);
// Account for DST where needed
gmTime = localtime(&sysTime);
if(gmTime->tm_isdst == 1)
tzDST = 3600;
else
tzDST = 0;
// Lazy way to get local time in sec
gmTime = gmtime(&sysTime);
tzDiff = sysTime - mktime(gmTime);
return (u64)(sysTime + tzDiff);
return (u64)(sysTime + tzDiff + tzDST);
}
// Return the current time formatted as Minutes:Seconds:Milliseconds

14
Source/Core/Core/Src/HW/EXI_DeviceIPL.cpp
View File

@ -254,6 +254,9 @@ bool CEXIIPL::IsPresent()
void CEXIIPL::TransferByte(u8& _uByte)
{
// Seconds between 1.1.2000 and 4.1.2008 16:00:38
const u32 cWiiBias = 0x0F1114A6;
// The first 4 bytes must be the address
// If we haven't read it, do it now
if (m_uPosition < 4)
@ -267,7 +270,8 @@ void CEXIIPL::TransferByte(u8& _uByte)
if (m_uPosition == 3)
{
// Get the time ...
u32 GCTime = CEXIIPL::GetGCTime();
// Subtract Wii bias
u32 GCTime = CEXIIPL::GetGCTime() - cWiiBias;
u8* pGCTime = (u8*)&GCTime;
for (int i=0; i<4; i++)
{
@ -405,8 +409,7 @@ void CEXIIPL::TransferByte(u8& _uByte)
u32 CEXIIPL::GetGCTime()
{
u64 ltime = 0;
const u32 cJanuary2000 = 0x386D42C0; // Seconds between 1.1.1970 and 1.1.2000
const u32 cWiiBias = 0x0F111566; // Seconds between 1.1.2000 and 5.1.2008 (Wii epoch)
const u32 cJanuary2000 = 0x386D4380; // Seconds between 1.1.1970 and 1.1.2000
#if defined(HAVE_WX) && HAVE_WX
// hack in some netplay stuff
@ -415,10 +418,7 @@ u32 CEXIIPL::GetGCTime()
if (0 == ltime)
ltime = Common::Timer::GetLocalTimeSinceJan1970();
if (SConfig::GetInstance().m_LocalCoreStartupParameter.bWii)
return ((u32)ltime - cJanuary2000 - cWiiBias/* + 32434790*/);
else
return ((u32)ltime - cJanuary2000);
return ((u32)ltime - cJanuary2000);
#if 0
// (mb2): I think we can get rid of the IPL bias.