2b2f4ae0fb
--change-section address and its alias --adjust-section-vma allows modification of section addresses in a relocatable file. This used to be used, for example, in Fiasco microkernel. On a relocatable file this option behaves the same as GNU objcopy, apart from the fact that it does not issue any warnings, for example, when an argument is not used. GNU objcopy does not produce an error when passed an executable file but the usecase for this is not clear, and the behaviour is inconsistent. The idea of GNU objcopy --change-section-address is that the option should change both LMA and VMA in an executable file. Since this patch does not implement executable file support, only VMA is changed.
115 lines
5.7 KiB
C++
115 lines
5.7 KiB
C++
//===- ConfigManager.cpp --------------------------------------------------===//
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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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#include "llvm/ObjCopy/ConfigManager.h"
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/Error.h"
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namespace llvm {
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namespace objcopy {
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Expected<const COFFConfig &> ConfigManager::getCOFFConfig() const {
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if (!Common.SplitDWO.empty() || !Common.SymbolsPrefix.empty() ||
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!Common.SymbolsPrefixRemove.empty() || !Common.SymbolsToSkip.empty() ||
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!Common.AllocSectionsPrefix.empty() || !Common.KeepSection.empty() ||
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!Common.SymbolsToGlobalize.empty() || !Common.SymbolsToKeep.empty() ||
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!Common.SymbolsToLocalize.empty() || !Common.SymbolsToWeaken.empty() ||
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!Common.SymbolsToKeepGlobal.empty() || !Common.SectionsToRename.empty() ||
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!Common.SetSectionAlignment.empty() || !Common.SetSectionType.empty() ||
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Common.ExtractDWO || Common.PreserveDates || Common.StripDWO ||
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Common.StripNonAlloc || Common.StripSections || Common.Weaken ||
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Common.DecompressDebugSections ||
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Common.DiscardMode == DiscardType::Locals ||
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!Common.SymbolsToAdd.empty() || Common.GapFill != 0 ||
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Common.PadTo != 0 || Common.ChangeSectionLMAValAll != 0 ||
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!Common.ChangeSectionAddress.empty())
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return createStringError(llvm::errc::invalid_argument,
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"option is not supported for COFF");
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return COFF;
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}
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Expected<const MachOConfig &> ConfigManager::getMachOConfig() const {
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if (!Common.SplitDWO.empty() || !Common.SymbolsPrefix.empty() ||
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!Common.SymbolsPrefixRemove.empty() || !Common.SymbolsToSkip.empty() ||
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!Common.AllocSectionsPrefix.empty() || !Common.KeepSection.empty() ||
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!Common.SymbolsToGlobalize.empty() || !Common.SymbolsToKeep.empty() ||
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!Common.SymbolsToLocalize.empty() ||
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!Common.SymbolsToKeepGlobal.empty() || !Common.SectionsToRename.empty() ||
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!Common.UnneededSymbolsToRemove.empty() ||
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!Common.SetSectionAlignment.empty() || !Common.SetSectionFlags.empty() ||
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!Common.SetSectionType.empty() || Common.ExtractDWO ||
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Common.PreserveDates || Common.StripAllGNU || Common.StripDWO ||
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Common.StripNonAlloc || Common.StripSections ||
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Common.DecompressDebugSections || Common.StripUnneeded ||
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Common.DiscardMode == DiscardType::Locals ||
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!Common.SymbolsToAdd.empty() || Common.GapFill != 0 ||
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Common.PadTo != 0 || Common.ChangeSectionLMAValAll != 0 ||
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!Common.ChangeSectionAddress.empty())
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return createStringError(llvm::errc::invalid_argument,
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"option is not supported for MachO");
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return MachO;
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}
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Expected<const WasmConfig &> ConfigManager::getWasmConfig() const {
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if (!Common.AddGnuDebugLink.empty() || Common.ExtractPartition ||
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!Common.SplitDWO.empty() || !Common.SymbolsPrefix.empty() ||
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!Common.SymbolsPrefixRemove.empty() || !Common.SymbolsToSkip.empty() ||
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!Common.AllocSectionsPrefix.empty() ||
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Common.DiscardMode != DiscardType::None || !Common.SymbolsToAdd.empty() ||
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!Common.SymbolsToGlobalize.empty() || !Common.SymbolsToLocalize.empty() ||
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!Common.SymbolsToKeep.empty() || !Common.SymbolsToRemove.empty() ||
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!Common.UnneededSymbolsToRemove.empty() ||
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!Common.SymbolsToWeaken.empty() || !Common.SymbolsToKeepGlobal.empty() ||
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!Common.SectionsToRename.empty() || !Common.SetSectionAlignment.empty() ||
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!Common.SetSectionFlags.empty() || !Common.SetSectionType.empty() ||
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!Common.SymbolsToRename.empty() || Common.GapFill != 0 ||
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Common.PadTo != 0 || Common.ChangeSectionLMAValAll != 0 ||
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!Common.ChangeSectionAddress.empty())
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return createStringError(llvm::errc::invalid_argument,
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"only flags for section dumping, removal, and "
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"addition are supported");
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return Wasm;
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}
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Expected<const XCOFFConfig &> ConfigManager::getXCOFFConfig() const {
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if (!Common.AddGnuDebugLink.empty() || Common.ExtractPartition ||
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!Common.SplitDWO.empty() || !Common.SymbolsPrefix.empty() ||
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!Common.SymbolsPrefixRemove.empty() || !Common.SymbolsToSkip.empty() ||
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!Common.AllocSectionsPrefix.empty() ||
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Common.DiscardMode != DiscardType::None || !Common.AddSection.empty() ||
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!Common.DumpSection.empty() || !Common.SymbolsToAdd.empty() ||
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!Common.KeepSection.empty() || !Common.OnlySection.empty() ||
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!Common.ToRemove.empty() || !Common.SymbolsToGlobalize.empty() ||
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!Common.SymbolsToKeep.empty() || !Common.SymbolsToLocalize.empty() ||
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!Common.SymbolsToRemove.empty() ||
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!Common.UnneededSymbolsToRemove.empty() ||
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!Common.SymbolsToWeaken.empty() || !Common.SymbolsToKeepGlobal.empty() ||
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!Common.SectionsToRename.empty() || !Common.SetSectionAlignment.empty() ||
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!Common.SetSectionFlags.empty() || !Common.SetSectionType.empty() ||
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!Common.SymbolsToRename.empty() || Common.ExtractDWO ||
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Common.ExtractMainPartition || Common.OnlyKeepDebug ||
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Common.PreserveDates || Common.StripAllGNU || Common.StripDWO ||
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Common.StripDebug || Common.StripNonAlloc || Common.StripSections ||
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Common.Weaken || Common.StripUnneeded || Common.DecompressDebugSections ||
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Common.GapFill != 0 || Common.PadTo != 0 ||
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Common.ChangeSectionLMAValAll != 0 ||
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!Common.ChangeSectionAddress.empty()) {
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return createStringError(
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llvm::errc::invalid_argument,
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"no flags are supported yet, only basic copying is allowed");
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}
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return XCOFF;
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}
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} // end namespace objcopy
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} // end namespace llvm
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