66 lines
2.5 KiB
C++
66 lines
2.5 KiB
C++
//===------- MachO.h - Generic JIT link function for MachO ------*- C++ -*-===//
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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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// Generic jit-link functions for MachO.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_EXECUTIONENGINE_JITLINK_MACHO_H
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#define LLVM_EXECUTIONENGINE_JITLINK_MACHO_H
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#include "llvm/ExecutionEngine/JITLink/JITLink.h"
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#include "llvm/ExecutionEngine/Orc/Shared/MachOObjectFormat.h"
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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namespace jitlink {
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/// Create a LinkGraph from a MachO relocatable object.
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///
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/// Note: The graph does not take ownership of the underlying buffer, nor copy
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/// its contents. The caller is responsible for ensuring that the object buffer
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/// outlives the graph.
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LLVM_ABI Expected<std::unique_ptr<LinkGraph>>
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createLinkGraphFromMachOObject(MemoryBufferRef ObjectBuffer,
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std::shared_ptr<orc::SymbolStringPool> SSP);
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/// jit-link the given ObjBuffer, which must be a MachO object file.
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///
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/// Uses conservative defaults for GOT and stub handling based on the target
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/// platform.
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LLVM_ABI void link_MachO(std::unique_ptr<LinkGraph> G,
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std::unique_ptr<JITLinkContext> Ctx);
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/// Get a pointer to the standard MachO data section (creates an empty
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/// section with RW- permissions and standard lifetime if one does not
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/// already exist).
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inline Section &getMachODefaultRWDataSection(LinkGraph &G) {
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if (auto *DataSec = G.findSectionByName(orc::MachODataDataSectionName))
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return *DataSec;
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return G.createSection(orc::MachODataDataSectionName,
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orc::MemProt::Read | orc::MemProt::Write);
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}
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/// Get a pointer to the standard MachO text section (creates an empty
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/// section with R-X permissions and standard lifetime if one does not
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/// already exist).
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inline Section &getMachODefaultTextSection(LinkGraph &G) {
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if (auto *TextSec = G.findSectionByName(orc::MachOTextTextSectionName))
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return *TextSec;
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return G.createSection(orc::MachOTextTextSectionName,
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orc::MemProt::Read | orc::MemProt::Exec);
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}
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/// Gets or creates a MachO header for the current LinkGraph.
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LLVM_ABI Expected<Symbol &> getOrCreateLocalMachOHeader(LinkGraph &G);
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} // end namespace jitlink
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} // end namespace llvm
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#endif // LLVM_EXECUTIONENGINE_JITLINK_MACHO_H
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