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OpcodeDispatcher: inline entrypoint offsets manually

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it's literally less code with some helpers.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
This commit is contained in:
Alyssa Rosenzweig committed 2025-08-06 20:40:49 -04:00
1 parent f3ddaf455c
commit 41a188eaec
3 files changed
+35 -39
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FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
+13 -33
View File
@@ -534,7 +534,7 @@ void OpDispatchBuilder::CALLOp(OpcodeArgs) {
if (NextRIP != TargetRIP) {
// Store the RIP
ExitFunction(NewRIP, BranchHint::Call, ConstantPC, [&]() {
ExitRelocatedPC(Op, TargetOffset, BranchHint::Call, ConstantPC, [&]() {
auto CallReturnJumpTarget = JumpTargets.find(NextRIP);
if (CallReturnJumpTarget != JumpTargets.end() && CallReturnJumpTarget->second.IsEntryPoint) {
return CallReturnJumpTarget->second.BlockEntry;
@@ -742,10 +742,8 @@ void OpDispatchBuilder::CondJUMPOp(OpcodeArgs) {
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
auto NewRIP = GetRelocatedPC(Op, TargetOffset);
// Store the new RIP
ExitFunction(NewRIP);
ExitRelocatedPC(Op, TargetOffset);
}
// Failure to take branch
@@ -759,11 +757,8 @@ void OpDispatchBuilder::CondJUMPOp(OpcodeArgs) {
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
// Leave block
auto RIPTargetConst = GetRelocatedPC(Op);
// Store the new RIP
ExitFunction(RIPTargetConst);
// Leave block & store the new RIP
ExitRelocatedPC(Op);
}
}
}
@@ -798,10 +793,8 @@ void OpDispatchBuilder::CondJUMPRCXOp(OpcodeArgs) {
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
auto NewRIP = GetRelocatedPC(Op, Op->Src[0].Data.Literal.Value);
// Store the new RIP
ExitFunction(NewRIP);
ExitRelocatedPC(Op, Op->Src[0].Data.Literal.Value);
}
// Failure to take branch
@@ -815,11 +808,8 @@ void OpDispatchBuilder::CondJUMPRCXOp(OpcodeArgs) {
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
// Leave block
auto RIPTargetConst = GetRelocatedPC(Op);
// Store the new RIP
ExitFunction(RIPTargetConst);
// Leave block & store the new RIP
ExitRelocatedPC(Op);
}
}
}
@@ -872,10 +862,8 @@ void OpDispatchBuilder::LoopOp(OpcodeArgs) {
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
auto NewRIP = GetRelocatedPC(Op, Op->Src[1].Data.Literal.Value);
// Store the new RIP
ExitFunction(NewRIP);
ExitRelocatedPC(Op, Op->Src[1].Data.Literal.Value);
}
// Failure to take branch
@@ -889,11 +877,8 @@ void OpDispatchBuilder::LoopOp(OpcodeArgs) {
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
// Leave block
auto RIPTargetConst = GetRelocatedPC(Op);
// Store the new RIP
ExitFunction(RIPTargetConst);
// Leave block & store the new RIP
ExitRelocatedPC(Op);
}
}
}
@@ -937,10 +922,10 @@ void OpDispatchBuilder::JUMPOp(OpcodeArgs) {
SetJumpTarget(Jump_, JumpTarget);
SetCurrentCodeBlock(JumpTarget);
StartNewBlock();
ExitFunction(GetRelocatedPC(Op, TargetOffset));
ExitRelocatedPC(Op, TargetOffset);
}
} else {
ExitFunction(GetRelocatedPC(Op, TargetOffset));
ExitRelocatedPC(Op, TargetOffset);
}
}
@@ -3895,7 +3880,7 @@ void OpDispatchBuilder::Finalize() {
// We haven't emitted. Dump out to the dispatcher
SetCurrentCodeBlock(Handler.second.BlockEntry);
ExitFunction(_EntrypointOffset(GPRSize, Handler.first - Entry));
ExitFunction(_InlineEntrypointOffset(GPRSize, Handler.first - Entry));
}
}
@@ -4208,11 +4193,6 @@ Ref OpDispatchBuilder::LoadSource_WithOpSize(RegisterClassType Class, const X86T
}
}
Ref OpDispatchBuilder::GetRelocatedPC(const FEXCore::X86Tables::DecodedOp& Op, int64_t Offset) {
const auto GPRSize = GetGPROpSize();
return _EntrypointOffset(GPRSize, Op->PC + Op->InstSize + Offset - Entry);
}
Ref OpDispatchBuilder::LoadGPRRegister(uint32_t GPR, IR::OpSize Size, uint8_t Offset, bool AllowUpperGarbage) {
const auto GPRSize = GetGPROpSize();
if (Size == OpSize::iInvalid) {