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Interpreter_LoadStore: Generate alignment exceptions if an FP load/store instruction's effective address is not word aligned

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This is one of the conditions for an alignment exception documented in
the 750CL architecture reference manual in section 4.5.6, which also
applies to the Gekko microprocessor.
This commit is contained in:
Lioncash 2018-04-05 00:22:57 -04:00
parent 9be505fde2
commit 912c9490c0
1 changed files with 130 additions and 8 deletions
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138
Source/Core/Core/PowerPC/Interpreter/Interpreter_LoadStore.cpp
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@ -74,7 +74,15 @@ void Interpreter::lbzu(UGeckoInstruction inst)
void Interpreter::lfd(UGeckoInstruction inst)
{
const u64 temp = PowerPC::Read_U64(Helper_Get_EA(inst));
const u32 address = Helper_Get_EA(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u64 temp = PowerPC::Read_U64(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
riPS0(inst.FD) = temp;
@ -83,6 +91,13 @@ void Interpreter::lfd(UGeckoInstruction inst)
void Interpreter::lfdu(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_U(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u64 temp = PowerPC::Read_U64(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
@ -95,6 +110,13 @@ void Interpreter::lfdu(UGeckoInstruction inst)
void Interpreter::lfdux(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_UX(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u64 temp = PowerPC::Read_U64(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
@ -106,7 +128,15 @@ void Interpreter::lfdux(UGeckoInstruction inst)
void Interpreter::lfdx(UGeckoInstruction inst)
{
const u64 temp = PowerPC::Read_U64(Helper_Get_EA_X(inst));
const u32 address = Helper_Get_EA_X(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u64 temp = PowerPC::Read_U64(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
riPS0(inst.FD) = temp;
@ -114,7 +144,15 @@ void Interpreter::lfdx(UGeckoInstruction inst)
void Interpreter::lfs(UGeckoInstruction inst)
{
const u32 temp = PowerPC::Read_U32(Helper_Get_EA(inst));
const u32 address = Helper_Get_EA(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u32 temp = PowerPC::Read_U32(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
{
@ -127,6 +165,13 @@ void Interpreter::lfs(UGeckoInstruction inst)
void Interpreter::lfsu(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_U(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u32 temp = PowerPC::Read_U32(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
@ -141,6 +186,13 @@ void Interpreter::lfsu(UGeckoInstruction inst)
void Interpreter::lfsux(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_UX(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u32 temp = PowerPC::Read_U32(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
@ -154,7 +206,15 @@ void Interpreter::lfsux(UGeckoInstruction inst)
void Interpreter::lfsx(UGeckoInstruction inst)
{
const u32 temp = PowerPC::Read_U32(Helper_Get_EA_X(inst));
const u32 address = Helper_Get_EA_X(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
const u32 temp = PowerPC::Read_U32(address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
{
@ -300,13 +360,27 @@ void Interpreter::stbu(UGeckoInstruction inst)
void Interpreter::stfd(UGeckoInstruction inst)
{
PowerPC::Write_U64(riPS0(inst.FS), Helper_Get_EA(inst));
const u32 address = Helper_Get_EA(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U64(riPS0(inst.FS), address);
}
void Interpreter::stfdu(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_U(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U64(riPS0(inst.FS), address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
{
@ -316,13 +390,27 @@ void Interpreter::stfdu(UGeckoInstruction inst)
void Interpreter::stfs(UGeckoInstruction inst)
{
PowerPC::Write_U32(ConvertToSingle(riPS0(inst.FS)), Helper_Get_EA(inst));
const u32 address = Helper_Get_EA(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U32(ConvertToSingle(riPS0(inst.FS)), address);
}
void Interpreter::stfsu(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_U(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U32(ConvertToSingle(riPS0(inst.FS)), address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
{
@ -646,6 +734,12 @@ void Interpreter::stfdux(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_UX(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U64(riPS0(inst.FS), address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
{
@ -655,7 +749,15 @@ void Interpreter::stfdux(UGeckoInstruction inst)
void Interpreter::stfdx(UGeckoInstruction inst)
{
PowerPC::Write_U64(riPS0(inst.FS), Helper_Get_EA_X(inst));
const u32 address = Helper_Get_EA_X(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U64(riPS0(inst.FS), address);
}
// Stores Floating points into Integers indeXed
@ -663,6 +765,12 @@ void Interpreter::stfiwx(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_X(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U32((u32)riPS0(inst.FS), address);
}
@ -670,6 +778,12 @@ void Interpreter::stfsux(UGeckoInstruction inst)
{
const u32 address = Helper_Get_EA_UX(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U32(ConvertToSingle(riPS0(inst.FS)), address);
if (!(PowerPC::ppcState.Exceptions & EXCEPTION_DSI))
{
@ -679,7 +793,15 @@ void Interpreter::stfsux(UGeckoInstruction inst)
void Interpreter::stfsx(UGeckoInstruction inst)
{
PowerPC::Write_U32(ConvertToSingle(riPS0(inst.FS)), Helper_Get_EA_X(inst));
const u32 address = Helper_Get_EA_X(inst);
if ((address & 0b11) != 0)
{
GenerateAlignmentException(address);
return;
}
PowerPC::Write_U32(ConvertToSingle(riPS0(inst.FS)), address);
}
void Interpreter::sthbrx(UGeckoInstruction inst)