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take it somewhere.

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still need to speed it up a tad.
This commit is contained in:
StapleButter
2018-12-09 01:17:05 +01:00
parent c6fb152d80
commit 29bca33bc6
8 changed files with 359 additions and 414 deletions
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35
src/ARM.cpp
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@ -136,17 +136,6 @@ void ARMv5::DoSavestate(Savestate* file)
}
void ARMv5::CalculateTimings()
{
//
}
void ARMv4::CalculateTimings()
{
//
}
void ARM::SetupCodeMem(u32 addr)
{
if (!Num)
@ -181,8 +170,11 @@ void ARMv5::JumpTo(u32 addr, bool restorecpsr)
//printf("[%03d] IRQ handler thing. wait=%08X\n", GPU::VCount, dorp);
}
u32 oldregion = R[15] >> 23;
u32 newregion = addr >> 23;
u32 oldregion = R[15] >> 24;
u32 newregion = addr >> 24;
if (addr < ITCMSize) CodeCycles = 1;
else CodeCycles = MemTimings[addr >> 12][0];
s32 cycles;
@ -199,13 +191,13 @@ void ARMv5::JumpTo(u32 addr, bool restorecpsr)
{
NextInstr[0] = CodeRead32(addr-2) >> 16;
NextInstr[1] = CodeRead32(addr+2);
cycles = NDS::ARM9MemTimings[CodeRegion][2] * 2;
cycles = CodeCycles * 2;
}
else
{
NextInstr[0] = CodeRead32(addr);
NextInstr[1] = NextInstr[0] >> 16;
cycles = NDS::ARM9MemTimings[CodeRegion][2];
cycles = CodeCycles;
}
CPSR |= 0x20;
@ -219,7 +211,7 @@ void ARMv5::JumpTo(u32 addr, bool restorecpsr)
NextInstr[0] = CodeRead32(addr);
NextInstr[1] = CodeRead32(addr+4);
cycles = NDS::ARM9MemTimings[CodeRegion][2] * 2;
cycles = CodeCycles * 2;
CPSR &= ~0x20;
}
@ -250,6 +242,9 @@ void ARMv4::JumpTo(u32 addr, bool restorecpsr)
u32 oldregion = R[15] >> 23;
u32 newregion = addr >> 23;
CodeRegion = addr >> 24;
CodeCycles = addr >> 15; // cheato
if (addr & 0x1)
{
addr &= ~0x1;
@ -259,7 +254,7 @@ void ARMv4::JumpTo(u32 addr, bool restorecpsr)
NextInstr[0] = CodeRead16(addr);
NextInstr[1] = CodeRead16(addr+2);
Cycles += NDS::ARM7MemTimings[CodeRegion][0] + NDS::ARM7MemTimings[CodeRegion][1];
Cycles += NDS::ARM7MemTimings[CodeCycles][0] + NDS::ARM7MemTimings[CodeCycles][1];
CPSR |= 0x20;
}
@ -272,7 +267,7 @@ void ARMv4::JumpTo(u32 addr, bool restorecpsr)
NextInstr[0] = CodeRead32(addr);
NextInstr[1] = CodeRead32(addr+4);
Cycles += NDS::ARM7MemTimings[CodeRegion][2] + NDS::ARM7MemTimings[CodeRegion][3];
Cycles += NDS::ARM7MemTimings[CodeCycles][2] + NDS::ARM7MemTimings[CodeCycles][3];
CPSR &= ~0x20;
}
@ -482,8 +477,8 @@ s32 ARMv5::Execute()
R[15] += 2;
CurInstr = NextInstr[0];
NextInstr[0] = NextInstr[1];
if (R[15] & 0x2) { NextInstr[1] >>= 16; CodeRegion = NDS::Region9_MAX; }
else NextInstr[1] = CodeRead32(R[15]);
if (R[15] & 0x2) NextInstr[1] >>= 16;
else NextInstr[1] = CodeRead32(R[15]);
// actually execute
u32 icode = (CurInstr >> 6) & 0x3FF;