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Implement vaarg instruction. This is not quite perfect: 2003-08-11-VaListArg

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still causes a crash. But it's better than before.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9794 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Brian Gaeke 2003-11-07 21:20:47 +00:00
parent 52709450c8
commit c1a2be18ea
2 changed files with 36 additions and 0 deletions
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35
lib/ExecutionEngine/Interpreter/Execution.cpp
View File

@ -820,6 +820,41 @@ void Interpreter::visitVANextInst(VANextInst &I) {
SetValue(&I, VAList, SF);
}
#define IMPLEMENT_VAARG(TY) \
case Type::TY##TyID: Dest.TY##Val = Src.TY##Val; break
void Interpreter::visitVAArgInst(VAArgInst &I) {
ExecutionContext &SF = ECStack.back();
// Get the incoming valist element. LLI treats the valist as an integer.
GenericValue VAList = getOperandValue(I.getOperand(0), SF);
unsigned Argument = VAList.IntVal;
assert(Argument < SF.VarArgs.size() &&
"Accessing past the last vararg argument!");
GenericValue Dest, Src = SF.VarArgs[Argument];
const Type *Ty = I.getType();
switch (Ty->getPrimitiveID()) {
IMPLEMENT_VAARG(UByte);
IMPLEMENT_VAARG(SByte);
IMPLEMENT_VAARG(UShort);
IMPLEMENT_VAARG(Short);
IMPLEMENT_VAARG(UInt);
IMPLEMENT_VAARG(Int);
IMPLEMENT_VAARG(ULong);
IMPLEMENT_VAARG(Long);
IMPLEMENT_VAARG(Pointer);
IMPLEMENT_VAARG(Float);
IMPLEMENT_VAARG(Double);
IMPLEMENT_VAARG(Bool);
default:
std::cout << "Unhandled dest type for vaarg instruction: " << *Ty << "\n";
abort();
}
// Set the Value of this Instruction.
SetValue(&I, Dest, SF);
}
//===----------------------------------------------------------------------===//
// Dispatch and Execution Code
//===----------------------------------------------------------------------===//

1
lib/ExecutionEngine/Interpreter/Interpreter.h
View File

@ -130,6 +130,7 @@ public:
void visitShl(ShiftInst &I);
void visitShr(ShiftInst &I);
void visitVANextInst(VANextInst &I);
void visitVAArgInst(VAArgInst &I);
void visitInstruction(Instruction &I) {
std::cerr << I;
assert(0 && "Instruction not interpretable yet!");