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stella
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segfault Stella protection added 

some more small optimizations (fetch32 removed)
This commit is contained in:
thrust26 2019-02-24 09:23:57 +01:00
parent d188b5024f
commit bb3075947b
2 changed files with 9 additions and 41 deletions
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47
src/emucore/Thumbulator.cxx
View File

@ -89,8 +89,10 @@ string Thumbulator::run()
#if defined(THUMB_DISS) || defined(THUMB_DBUG)
dump_counters();
cout << statusMsg.str() << endl;
#endif
return statusMsg.str();
#else
return "";
#endif
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
@ -211,42 +213,6 @@ uInt32 Thumbulator::fetch16(uInt32 addr)
#endif
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
uInt32 Thumbulator::fetch32(uInt32 addr)
{
uInt32 data;
switch(addr & 0xF0000000)
{
case 0x00000000: //ROM
if(addr < 0x50)
{
data = read32(addr);
DO_DBUG(statusMsg << "fetch32(" << Base::HEX8 << addr << ")=" << Base::HEX8 << data << endl);
if(addr == 0x00000000) return data;
if(addr == 0x00000004) return data;
#ifndef UNSAFE_OPTIMIZATIONS
if(addr == 0x0000003C) return data;
fatalError("fetch32", addr, "abort");
#else
return data;
#endif
}
[[fallthrough]];
#ifndef UNSAFE_OPTIMIZATIONS
case 0x40000000: //RAM
#else
default:
#endif
data = read32(addr);
DO_DBUG(statusMsg << "fetch32(" << Base::HEX8 << addr << ")=" << Base::HEX8 << data << endl);
return data;
}
#ifndef UNSAFE_OPTIMIZATIONS
return fatalError("fetch32", addr, "abort");
#endif
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
void Thumbulator::write16(uInt32 addr, uInt32 data)
{
@ -849,7 +815,7 @@ int Thumbulator::execute()
else
decodedOp = decodeInstructionWord(inst);
#else
decodedOp = decodedRom[instructionPtr >> 1];
decodedOp = decodedRom[(instructionPtr & ROMADDMASK) >> 1];
#endif
switch (decodedOp) {
@ -2438,7 +2404,9 @@ int Thumbulator::execute()
}
else
{
#if defined(THUMB_DISS)
statusMsg << endl << endl << "swi 0x" << Base::HEX2 << rb << endl;
#endif
return 1;
}
}
@ -2554,8 +2522,9 @@ int Thumbulator::reset()
#ifndef NO_THUMB_STATS
fetches = reads = writes = 0;
#endif
#ifndef UNSAFE_OPTIMIZATIONS
statusMsg.str("");
#endif
return 0;
}

3
src/emucore/Thumbulator.hxx
View File

@ -152,7 +152,6 @@ class Thumbulator
uInt32 read_register(uInt32 reg);
void write_register(uInt32 reg, uInt32 data);
uInt32 fetch16(uInt32 addr);
uInt32 fetch32(uInt32 addr);
uInt32 read16(uInt32 addr);
uInt32 read32(uInt32 addr);
#ifndef UNSAFE_OPTIMIZATIONS
@ -208,9 +207,9 @@ class Thumbulator
uInt32 T1TC; // Timer 1 Timer Counter
double timing_factor;
#ifndef UNSAFE_OPTIMIZATIONS
ostringstream statusMsg;
#ifndef UNSAFE_OPTIMIZATIONS
static bool trapOnFatal;
#endif