48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
//===- MCSFrame.h - Machine Code SFrame support ---------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains the declaration of MCSFrameEmitter to support emitting
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// sframe unwinding info from .cfi_* directives. It relies on FDEs and CIEs
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// created for Dwarf frame info, but emits that info in a different format.
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//
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// See https://sourceware.org/binutils/docs-2.41/sframe-spec.html
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCSFRAME_H
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#define LLVM_MC_MCSFRAME_H
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#include "llvm/ADT/SmallVector.h"
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#include <cstdint>
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namespace llvm {
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class MCContext;
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class MCObjectStreamer;
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class MCFragment;
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class MCSFrameEmitter {
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public:
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// Emit the sframe section.
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//
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// \param Streamer - Emit into this stream.
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LLVM_ABI static void emit(MCObjectStreamer &Streamer);
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// Encode the FRE's function offset.
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//
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// \param C - Context.
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// \param Offset - Offset to encode.
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// \param Out - Destination of the encoding.
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// \param FDEFrag - Frag that specifies the encoding format.
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LLVM_ABI static void encodeFuncOffset(MCContext &C, uint64_t Offset,
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SmallVectorImpl<char> &Out,
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MCFragment *FDEFrag);
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};
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} // end namespace llvm
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#endif // LLVM_MC_MCSFRAME_H
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