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Fix two problems: 

* Load Implementation can cause unaligned memory accesses, which caused
    problems for sparc.
  * cast from pointer to pointer would zero the upper 32 bits of the pointer
    which obviously causes problems on 64 bit hosts.

llvm-svn: 4454
This commit is contained in:
Chris Lattner 2002-10-30 21:47:57 +00:00
parent 9a51899691
commit 61596ad266
1 changed files with 31 additions and 31 deletions
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62
llvm/lib/ExecutionEngine/Interpreter/Execution.cpp
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@ -842,29 +842,29 @@ static void executeLoadInst(LoadInst &I, ExecutionContext &SF) {
switch (I.getType()->getPrimitiveID()) {
case Type::BoolTyID:
case Type::UByteTyID:
case Type::SByteTyID: Result.Untyped[0] = Ptr->UByteVal; break;
case Type::SByteTyID: Result.UByteVal = Ptr->Untyped[0]; break;
case Type::UShortTyID:
case Type::ShortTyID: Result.Untyped[0] = Ptr->UShortVal & 255;
Result.Untyped[1] = (Ptr->UShortVal >> 8) & 255;
case Type::ShortTyID: Result.UShortVal = (unsigned)Ptr->Untyped[0] |
((unsigned)Ptr->Untyped[1] << 8);
break;
case Type::FloatTyID:
case Type::UIntTyID:
case Type::IntTyID: Result.Untyped[0] = Ptr->UIntVal & 255;
Result.Untyped[1] = (Ptr->UIntVal >> 8) & 255;
Result.Untyped[2] = (Ptr->UIntVal >> 16) & 255;
Result.Untyped[3] = (Ptr->UIntVal >> 24) & 255;
case Type::IntTyID: Result.UIntVal = (unsigned)Ptr->Untyped[0] |
((unsigned)Ptr->Untyped[1] << 8) |
((unsigned)Ptr->Untyped[2] << 16) |
((unsigned)Ptr->Untyped[3] << 24);
break;
case Type::DoubleTyID:
case Type::ULongTyID:
case Type::LongTyID:
case Type::PointerTyID: Result.Untyped[0] = Ptr->ULongVal & 255;
Result.Untyped[1] = (Ptr->ULongVal >> 8) & 255;
Result.Untyped[2] = (Ptr->ULongVal >> 16) & 255;
Result.Untyped[3] = (Ptr->ULongVal >> 24) & 255;
Result.Untyped[4] = (Ptr->ULongVal >> 32) & 255;
Result.Untyped[5] = (Ptr->ULongVal >> 40) & 255;
Result.Untyped[6] = (Ptr->ULongVal >> 48) & 255;
Result.Untyped[7] = (Ptr->ULongVal >> 56) & 255;
case Type::PointerTyID: Result.ULongVal = (uint64_t)Ptr->Untyped[0] |
((uint64_t)Ptr->Untyped[1] << 8) |
((uint64_t)Ptr->Untyped[2] << 16) |
((uint64_t)Ptr->Untyped[3] << 24) |
((uint64_t)Ptr->Untyped[4] << 32) |
((uint64_t)Ptr->Untyped[5] << 40) |
((uint64_t)Ptr->Untyped[6] << 48) |
((uint64_t)Ptr->Untyped[7] << 56);
break;
default:
cout << "Cannot load value of type " << I.getType() << "!\n";
@ -873,29 +873,29 @@ static void executeLoadInst(LoadInst &I, ExecutionContext &SF) {
switch (I.getType()->getPrimitiveID()) {
case Type::BoolTyID:
case Type::UByteTyID:
case Type::SByteTyID: Result.Untyped[0] = Ptr->UByteVal; break;
case Type::SByteTyID: Result.UByteVal = Ptr->Untyped[0]; break;
case Type::UShortTyID:
case Type::ShortTyID: Result.Untyped[1] = Ptr->UShortVal & 255;
Result.Untyped[0] = (Ptr->UShortVal >> 8) & 255;
case Type::ShortTyID: Result.UShortVal = (unsigned)Ptr->Untyped[1] |
((unsigned)Ptr->Untyped[0] << 8);
break;
case Type::FloatTyID:
case Type::UIntTyID:
case Type::IntTyID: Result.Untyped[3] = Ptr->UIntVal & 255;
Result.Untyped[2] = (Ptr->UIntVal >> 8) & 255;
Result.Untyped[1] = (Ptr->UIntVal >> 16) & 255;
Result.Untyped[0] = (Ptr->UIntVal >> 24) & 255;
case Type::IntTyID: Result.UIntVal = (unsigned)Ptr->Untyped[3] |
((unsigned)Ptr->Untyped[2] << 8) |
((unsigned)Ptr->Untyped[1] << 16) |
((unsigned)Ptr->Untyped[0] << 24);
break;
case Type::DoubleTyID:
case Type::ULongTyID:
case Type::LongTyID:
case Type::PointerTyID: Result.Untyped[7] = Ptr->ULongVal & 255;
Result.Untyped[6] = (Ptr->ULongVal >> 8) & 255;
Result.Untyped[5] = (Ptr->ULongVal >> 16) & 255;
Result.Untyped[4] = (Ptr->ULongVal >> 24) & 255;
Result.Untyped[3] = (Ptr->ULongVal >> 32) & 255;
Result.Untyped[2] = (Ptr->ULongVal >> 40) & 255;
Result.Untyped[1] = (Ptr->ULongVal >> 48) & 255;
Result.Untyped[0] = (Ptr->ULongVal >> 56) & 255;
case Type::PointerTyID: Result.ULongVal = (uint64_t)Ptr->Untyped[7] |
((uint64_t)Ptr->Untyped[6] << 8) |
((uint64_t)Ptr->Untyped[5] << 16) |
((uint64_t)Ptr->Untyped[4] << 24) |
((uint64_t)Ptr->Untyped[3] << 32) |
((uint64_t)Ptr->Untyped[2] << 40) |
((uint64_t)Ptr->Untyped[1] << 48) |
((uint64_t)Ptr->Untyped[0] << 56);
break;
default:
cout << "Cannot load value of type " << I.getType() << "!\n";
@ -1108,7 +1108,7 @@ static GenericValue executeCastOperation(Value *SrcVal, const Type *Ty,
IMPLEMENT_CAST_CASE(Int , ( signed int ));
IMPLEMENT_CAST_CASE(ULong , (uint64_t));
IMPLEMENT_CAST_CASE(Long , ( int64_t));
IMPLEMENT_CAST_CASE(Pointer, (PointerTy)(uint32_t));
IMPLEMENT_CAST_CASE(Pointer, (PointerTy));
IMPLEMENT_CAST_CASE(Float , (float));
IMPLEMENT_CAST_CASE(Double , (double));
default: