1//===------------------ InterpBuiltinBitCast.h ------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#ifndef LLVM_CLANG_AST_INTERP_BUILTIN_BIT_CAST_H
10#define LLVM_CLANG_AST_INTERP_BUILTIN_BIT_CAST_H
11
12#include "BitcastBuffer.h"
13#include <cstddef>
14
15namespace clang {
16namespace interp {
17class Pointer;
18class InterpState;
19class CodePtr;
20class Context;
21
22inline static void swapBytes(std::byte *M, size_t N) {
23 for (size_t I = 0; I != (N / 2); ++I)
24 std::swap(a&: M[I], b&: M[N - 1 - I]);
25}
26
27bool DoBitCast(InterpState &S, CodePtr OpPC, const Pointer &Ptr,
28 std::byte *Buff, Bits BitWidth, Bits FullBitWidth,
29 bool &HasIndeterminateBits);
30bool DoBitCastPtr(InterpState &S, CodePtr OpPC, const Pointer &FromPtr,
31 Pointer &ToPtr);
32bool DoBitCastPtr(InterpState &S, CodePtr OpPC, const Pointer &FromPtr,
33 Pointer &ToPtr, size_t Size);
34bool readPointerToBuffer(const Context &Ctx, const Pointer &FromPtr,
35 BitcastBuffer &Buffer, bool ReturnOnUninit);
36
37bool DoMemcpy(InterpState &S, CodePtr OpPC, const Pointer &SrcPtr,
38 const Pointer &DestPtr, Bits Size);
39
40} // namespace interp
41} // namespace clang
42
43#endif
44