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Implement varargs support for LLI!

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6043 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2003-05-08 16:52:43 +00:00
parent f88b9a6397
commit 374344c0cc
2 changed files with 56 additions and 73 deletions
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lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+33
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@@ -695,6 +695,35 @@ GenericValue lle_X_fprintf(FunctionType *M, const vector<GenericValue> &Args) {
return GV;
}
//===----------------------------------------------------------------------===//
// LLVM Intrinsic Functions...
//===----------------------------------------------------------------------===//
// void llvm.va_start(<va_list> *) - Implement the va_start operation...
GenericValue llvm_va_start(FunctionType *F, const vector<GenericValue> &Args) {
assert(Args.size() == 1);
GenericValue *VAListP = (GenericValue *)GVTOP(Args[0]);
GenericValue Val;
Val.UIntVal = 0; // Start at the first '...' argument...
TheInterpreter->StoreValueToMemory(Val, VAListP, Type::UIntTy);
return GenericValue();
}
// void llvm.va_end(<va_list> *) - Implement the va_end operation...
GenericValue llvm_va_end(FunctionType *F, const vector<GenericValue> &Args) {
assert(Args.size() == 1);
return GenericValue(); // Noop!
}
// void llvm.va_copy(<va_list> *, <va_list>) - Implement the va_copy
// operation...
GenericValue llvm_va_copy(FunctionType *F, const vector<GenericValue> &Args) {
assert(Args.size() == 2);
GenericValue *DestVAList = (GenericValue*)GVTOP(Args[0]);
TheInterpreter->StoreValueToMemory(Args[1], DestVAList, Type::UIntTy);
return GenericValue();
}
} // End extern "C"
@@ -748,4 +777,8 @@ void Interpreter::initializeExternalFunctions() {
FuncNames["lle_X_ungetc"] = lle_X_ungetc;
FuncNames["lle_X_fprintf"] = lle_X_fprintf;
FuncNames["lle_X_freopen"] = lle_X_freopen;
FuncNames["lle_X_llvm.va_start"]= llvm_va_start;
FuncNames["lle_X_llvm.va_end"] = llvm_va_end;
FuncNames["lle_X_llvm.va_copy"] = llvm_va_copy;
}