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//===-- KCallable.h ---------------------------------------------*- C++ -*-===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef KLEE_KCALLABLE_H
#define KLEE_KCALLABLE_H
#include <string>
#include "llvm/ADT/Twine.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/LLVMContext.h"
namespace klee {
/// Wrapper for callable objects passed in callExternalFunction
class KCallable {
public:
enum CallableKind { CK_Function, CK_InlineAsm };
private:
const CallableKind Kind;
public:
KCallable(CallableKind Kind) : Kind(Kind) {}
CallableKind getKind() const { return Kind; }
virtual llvm::StringRef getName() const = 0;
virtual llvm::FunctionType *getFunctionType() const = 0;
virtual llvm::Value *getValue() = 0;
virtual ~KCallable() = default;
};
class KInlineAsm : public KCallable {
private:
static unsigned getFreshAsmId() {
static unsigned globalId = 0;
return globalId++;
}
llvm::InlineAsm *value;
std::string name;
public:
KInlineAsm(llvm::InlineAsm *value)
: KCallable(CK_InlineAsm), value(value),
name("__asm__" + llvm::Twine(getFreshAsmId()).str()) {}
llvm::StringRef getName() const override { return name; }
llvm::FunctionType *getFunctionType() const override {
return value->getFunctionType();
}
llvm::Value *getValue() override { return value; }
static bool classof(const KCallable *callable) {
return callable->getKind() == CK_InlineAsm;
}
llvm::InlineAsm *getInlineAsm() { return value; }
};
} // namespace klee
#endif /* KLEE_KCALLABLE_H */
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