139 lines
4.7 KiB
C++
139 lines
4.7 KiB
C++
//===-------- OrcMCJITReplacement.cpp - Orc-based MCJIT replacement -------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "OrcMCJITReplacement.h"
|
|
#include "llvm/ExecutionEngine/GenericValue.h"
|
|
|
|
namespace {
|
|
|
|
static struct RegisterJIT {
|
|
RegisterJIT() { llvm::orc::OrcMCJITReplacement::Register(); }
|
|
} JITRegistrator;
|
|
|
|
}
|
|
|
|
extern "C" void LLVMLinkInOrcMCJITReplacement() {}
|
|
|
|
namespace llvm {
|
|
namespace orc {
|
|
|
|
GenericValue
|
|
OrcMCJITReplacement::runFunction(Function *F,
|
|
ArrayRef<GenericValue> ArgValues) {
|
|
assert(F && "Function *F was null at entry to run()");
|
|
|
|
void *FPtr = getPointerToFunction(F);
|
|
assert(FPtr && "Pointer to fn's code was null after getPointerToFunction");
|
|
FunctionType *FTy = F->getFunctionType();
|
|
Type *RetTy = FTy->getReturnType();
|
|
|
|
assert((FTy->getNumParams() == ArgValues.size() ||
|
|
(FTy->isVarArg() && FTy->getNumParams() <= ArgValues.size())) &&
|
|
"Wrong number of arguments passed into function!");
|
|
assert(FTy->getNumParams() == ArgValues.size() &&
|
|
"This doesn't support passing arguments through varargs (yet)!");
|
|
|
|
// Handle some common cases first. These cases correspond to common `main'
|
|
// prototypes.
|
|
if (RetTy->isIntegerTy(32) || RetTy->isVoidTy()) {
|
|
switch (ArgValues.size()) {
|
|
case 3:
|
|
if (FTy->getParamType(0)->isIntegerTy(32) &&
|
|
FTy->getParamType(1)->isPointerTy() &&
|
|
FTy->getParamType(2)->isPointerTy()) {
|
|
int (*PF)(int, char **, const char **) =
|
|
(int (*)(int, char **, const char **))(intptr_t)FPtr;
|
|
|
|
// Call the function.
|
|
GenericValue rv;
|
|
rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(),
|
|
(char **)GVTOP(ArgValues[1]),
|
|
(const char **)GVTOP(ArgValues[2])));
|
|
return rv;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (FTy->getParamType(0)->isIntegerTy(32) &&
|
|
FTy->getParamType(1)->isPointerTy()) {
|
|
int (*PF)(int, char **) = (int (*)(int, char **))(intptr_t)FPtr;
|
|
|
|
// Call the function.
|
|
GenericValue rv;
|
|
rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue(),
|
|
(char **)GVTOP(ArgValues[1])));
|
|
return rv;
|
|
}
|
|
break;
|
|
case 1:
|
|
if (FTy->getNumParams() == 1 && FTy->getParamType(0)->isIntegerTy(32)) {
|
|
GenericValue rv;
|
|
int (*PF)(int) = (int (*)(int))(intptr_t)FPtr;
|
|
rv.IntVal = APInt(32, PF(ArgValues[0].IntVal.getZExtValue()));
|
|
return rv;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Handle cases where no arguments are passed first.
|
|
if (ArgValues.empty()) {
|
|
GenericValue rv;
|
|
switch (RetTy->getTypeID()) {
|
|
default:
|
|
llvm_unreachable("Unknown return type for function call!");
|
|
case Type::IntegerTyID: {
|
|
unsigned BitWidth = cast<IntegerType>(RetTy)->getBitWidth();
|
|
if (BitWidth == 1)
|
|
rv.IntVal = APInt(BitWidth, ((bool (*)())(intptr_t)FPtr)());
|
|
else if (BitWidth <= 8)
|
|
rv.IntVal = APInt(BitWidth, ((char (*)())(intptr_t)FPtr)());
|
|
else if (BitWidth <= 16)
|
|
rv.IntVal = APInt(BitWidth, ((short (*)())(intptr_t)FPtr)());
|
|
else if (BitWidth <= 32)
|
|
rv.IntVal = APInt(BitWidth, ((int (*)())(intptr_t)FPtr)());
|
|
else if (BitWidth <= 64)
|
|
rv.IntVal = APInt(BitWidth, ((int64_t (*)())(intptr_t)FPtr)());
|
|
else
|
|
llvm_unreachable("Integer types > 64 bits not supported");
|
|
return rv;
|
|
}
|
|
case Type::VoidTyID:
|
|
rv.IntVal = APInt(32, ((int (*)())(intptr_t)FPtr)());
|
|
return rv;
|
|
case Type::FloatTyID:
|
|
rv.FloatVal = ((float (*)())(intptr_t)FPtr)();
|
|
return rv;
|
|
case Type::DoubleTyID:
|
|
rv.DoubleVal = ((double (*)())(intptr_t)FPtr)();
|
|
return rv;
|
|
case Type::X86_FP80TyID:
|
|
case Type::FP128TyID:
|
|
case Type::PPC_FP128TyID:
|
|
llvm_unreachable("long double not supported yet");
|
|
case Type::PointerTyID:
|
|
return PTOGV(((void *(*)())(intptr_t)FPtr)());
|
|
}
|
|
}
|
|
|
|
llvm_unreachable("Full-featured argument passing not supported yet!");
|
|
}
|
|
|
|
void OrcMCJITReplacement::runStaticConstructorsDestructors(bool isDtors) {
|
|
auto &CtorDtorsMap = isDtors ? UnexecutedDestructors : UnexecutedConstructors;
|
|
|
|
for (auto &KV : CtorDtorsMap)
|
|
cantFail(LegacyCtorDtorRunner<LazyEmitLayerT>(
|
|
AcknowledgeORCv1Deprecation, std::move(KV.second), KV.first)
|
|
.runViaLayer(LazyEmitLayer));
|
|
|
|
CtorDtorsMap.clear();
|
|
}
|
|
|
|
} // End namespace orc.
|
|
} // End namespace llvm.
|