da5fb5e964
This adds support for the `-dump-section=<section>=<file>` flag for the DXContainer file format. This flag dumps the contents of a named section to the specified file. This flag is particularly handy for ripping DXIL bitcode out of the object files so that we can use LLVM tools to inspect and operate on the bitcode. To facilitate that workflow this flag also strips the program headers from parts containing DXIL so that the resulting file is a valid bitcode file. --------- Co-authored-by: Justin Bogner <mail@justinbogner.com>
139 lines
7.0 KiB
C++
139 lines
7.0 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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using namespace llvm;
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using namespace llvm::objcopy;
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Expected<const ELFConfig &> ConfigManager::getELFConfig() const {
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if (!Common.ExtractSection.empty())
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return createStringError(llvm::errc::invalid_argument,
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"option is not supported for ELF");
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return ELF;
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}
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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() || !Common.ExtractSection.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() ||
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!Common.AllocSectionsPrefix.empty() || !Common.KeepSection.empty() ||
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!Common.SymbolsToKeep.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() || !Common.ExtractSection.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() || !Common.ExtractSection.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() || !Common.ExtractSection.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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Expected<const DXContainerConfig &>
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ConfigManager::getDXContainerConfig() const {
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// All other flags are either supported or not applicable for DXContainer
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// object files and will be silently ignored.
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if (!Common.AddGnuDebugLink.empty() || !Common.SplitDWO.empty() ||
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!Common.AllocSectionsPrefix.empty() ||
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Common.DiscardMode != DiscardType::None || !Common.AddSection.empty() ||
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!Common.KeepSection.empty() || !Common.SectionsToRename.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.OnlyKeepDebug || Common.StripAllGNU || Common.StripDWO ||
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Common.StripDebug || Common.StripNonAlloc || Common.StripSections ||
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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(llvm::errc::invalid_argument,
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"option is not supported for DXContainer");
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}
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return DXContainer;
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}
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