ShuriZma
/
project64
mirror of https://github.com/project64/project64.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Core: Split CheckFPUException into CheckFPUException and CheckFPUInvalidException

This commit is contained in:
zilmar 2023-05-09 08:06:15 +09:30
parent 7c71ec21b5
commit 49a385e743
2 changed files with 83 additions and 87 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

169
Source/Project64-core/N64System/Interpreter/InterpreterOps.cpp
View File

@ -3161,10 +3161,6 @@ bool R4300iOp::CheckFPUInput32Conv(const float & Value)
{
FPStatusReg & StatusReg = (FPStatusReg &)_FPCR[31];
StatusReg.Cause.UnimplementedOperation = 1;
Exception = true;
}
if (Exception)
{
g_Reg->DoFloatingPointException(g_System->m_PipelineStage == PIPELINE_STAGE_JUMP);
g_System->m_PipelineStage = PIPELINE_STAGE_JUMP;
g_System->m_JumpToLocation = (*_PROGRAM_COUNTER);
@ -3319,92 +3315,14 @@ bool R4300iOp::CheckFPUResult64(double & Result)
bool R4300iOp::CheckFPUException(void)
{
int Except = fetestexcept(FE_ALL_EXCEPT);
if (Except == 0)
if (Except == 0 || !SetFPUException())
{
return false;
}
bool Res = false;
FPStatusReg & StatusReg = (FPStatusReg &)_FPCR[31];
if ((Except & FE_UNDERFLOW) != 0)
{
if (StatusReg.FlushSubnormals == 0 || StatusReg.Enable.Underflow || StatusReg.Enable.Inexact)
{
StatusReg.Cause.UnimplementedOperation = 1;
Res = true;
}
}
if (!Res)
{
if ((Except & FE_INEXACT) != 0)
{
StatusReg.Cause.Inexact = 1;
if (StatusReg.Enable.Inexact)
{
Res = true;
}
else
{
StatusReg.Flags.Inexact = 1;
}
}
if ((Except & FE_UNDERFLOW) != 0)
{
StatusReg.Cause.Underflow = 1;
if (StatusReg.Enable.Underflow)
{
Res = true;
}
else
{
StatusReg.Flags.Underflow = 1;
}
}
if ((Except & FE_OVERFLOW) != 0)
{
StatusReg.Cause.Overflow = 1;
if (StatusReg.Enable.Overflow)
{
Res = true;
}
else
{
StatusReg.Flags.Overflow = 1;
}
}
if ((Except & FE_DIVBYZERO) != 0)
{
StatusReg.Cause.DivisionByZero = 1;
if (StatusReg.Enable.DivisionByZero)
{
Res = true;
}
else
{
StatusReg.Flags.DivisionByZero = 1;
}
}
if ((Except & FE_INVALID) != 0)
{
StatusReg.Cause.InvalidOperation = 1;
if (StatusReg.Enable.InvalidOperation)
{
Res = true;
}
else
{
StatusReg.Flags.InvalidOperation = 1;
}
}
}
if (Res)
{
g_Reg->DoFloatingPointException(g_System->m_PipelineStage == PIPELINE_STAGE_JUMP);
g_System->m_PipelineStage = PIPELINE_STAGE_JUMP;
g_System->m_JumpToLocation = (*_PROGRAM_COUNTER);
}
return Res;
g_Reg->DoFloatingPointException(g_System->m_PipelineStage == PIPELINE_STAGE_JUMP);
g_System->m_PipelineStage = PIPELINE_STAGE_JUMP;
g_System->m_JumpToLocation = (*_PROGRAM_COUNTER);
return true;
}
bool R4300iOp::CheckFPUInvalidException(void)
@ -3444,3 +3362,80 @@ bool R4300iOp::CheckFPUInvalidException(void)
}
return false;
}
bool R4300iOp::SetFPUException(void)
{
FPStatusReg & StatusReg = (FPStatusReg &)_FPCR[31];
int Except = fetestexcept(FE_ALL_EXCEPT);
if ((Except & FE_UNDERFLOW) != 0)
{
if (StatusReg.FlushSubnormals == 0 || StatusReg.Enable.Underflow || StatusReg.Enable.Inexact)
{
StatusReg.Cause.UnimplementedOperation = 1;
return true;
}
}
bool Res = false;
if ((Except & FE_INEXACT) != 0)
{
StatusReg.Cause.Inexact = 1;
if (StatusReg.Enable.Inexact)
{
Res = true;
}
else
{
StatusReg.Flags.Inexact = 1;
}
}
if ((Except & FE_UNDERFLOW) != 0)
{
StatusReg.Cause.Underflow = 1;
if (StatusReg.Enable.Underflow)
{
Res = true;
}
else
{
StatusReg.Flags.Underflow = 1;
}
}
if ((Except & FE_OVERFLOW) != 0)
{
StatusReg.Cause.Overflow = 1;
if (StatusReg.Enable.Overflow)
{
Res = true;
}
else
{
StatusReg.Flags.Overflow = 1;
}
}
if ((Except & FE_DIVBYZERO) != 0)
{
StatusReg.Cause.DivisionByZero = 1;
if (StatusReg.Enable.DivisionByZero)
{
Res = true;
}
else
{
StatusReg.Flags.DivisionByZero = 1;
}
}
if ((Except & FE_INVALID) != 0)
{
StatusReg.Cause.InvalidOperation = 1;
if (StatusReg.Enable.InvalidOperation)
{
Res = true;
}
else
{
StatusReg.Flags.InvalidOperation = 1;
}
}
return Res;
}

1
Source/Project64-core/N64System/Interpreter/InterpreterOps.h
View File

@ -264,6 +264,7 @@ protected:
static bool CheckFPUResult64(double & Result);
static bool CheckFPUException(void);
static bool CheckFPUInvalidException(void);
static bool SetFPUException(void);
static const uint32_t SWL_MASK[4], SWR_MASK[4], LWL_MASK[4], LWR_MASK[4];
static const int32_t SWL_SHIFT[4], SWR_SHIFT[4], LWL_SHIFT[4], LWR_SHIFT[4];