summaryrefslogtreecommitdiff
path: root/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'tools/llvm-objcopy/COFF/COFFObjcopy.cpp')
-rw-r--r--tools/llvm-objcopy/COFF/COFFObjcopy.cpp88
1 files changed, 53 insertions, 35 deletions
diff --git a/tools/llvm-objcopy/COFF/COFFObjcopy.cpp b/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
index 4ae46851a66f..2a8d816e6f3c 100644
--- a/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
+++ b/tools/llvm-objcopy/COFF/COFFObjcopy.cpp
@@ -16,8 +16,8 @@
#include "llvm/Object/Binary.h"
#include "llvm/Object/COFF.h"
+#include "llvm/Support/CRC.h"
#include "llvm/Support/Errc.h"
-#include "llvm/Support/JamCRC.h"
#include "llvm/Support/Path.h"
#include <cassert>
@@ -40,22 +40,13 @@ static uint64_t getNextRVA(const Object &Obj) {
Obj.IsPE ? Obj.PeHeader.SectionAlignment : 1);
}
-static uint32_t getCRC32(StringRef Data) {
- JamCRC CRC;
- CRC.update(ArrayRef<char>(Data.data(), Data.size()));
- // The CRC32 value needs to be complemented because the JamCRC dosn't
- // finalize the CRC32 value. It also dosn't negate the initial CRC32 value
- // but it starts by default at 0xFFFFFFFF which is the complement of zero.
- return ~CRC.getCRC();
-}
-
static std::vector<uint8_t> createGnuDebugLinkSectionContents(StringRef File) {
ErrorOr<std::unique_ptr<MemoryBuffer>> LinkTargetOrErr =
MemoryBuffer::getFile(File);
if (!LinkTargetOrErr)
error("'" + File + "': " + LinkTargetOrErr.getError().message());
auto LinkTarget = std::move(*LinkTargetOrErr);
- uint32_t CRC32 = getCRC32(LinkTarget->getBuffer());
+ uint32_t CRC32 = llvm::crc32(arrayRefFromStringRef(LinkTarget->getBuffer()));
StringRef FileName = sys::path::filename(File);
size_t CRCPos = alignTo(FileName.size() + 1, 4);
@@ -65,26 +56,37 @@ static std::vector<uint8_t> createGnuDebugLinkSectionContents(StringRef File) {
return Data;
}
-static void addGnuDebugLink(Object &Obj, StringRef DebugLinkFile) {
- uint32_t StartRVA = getNextRVA(Obj);
+// Adds named section with given contents to the object.
+static void addSection(Object &Obj, StringRef Name, ArrayRef<uint8_t> Contents,
+ uint32_t Characteristics) {
+ bool NeedVA = Characteristics & (IMAGE_SCN_MEM_EXECUTE | IMAGE_SCN_MEM_READ |
+ IMAGE_SCN_MEM_WRITE);
- std::vector<Section> Sections;
Section Sec;
- Sec.setOwnedContents(createGnuDebugLinkSectionContents(DebugLinkFile));
- Sec.Name = ".gnu_debuglink";
- Sec.Header.VirtualSize = Sec.getContents().size();
- Sec.Header.VirtualAddress = StartRVA;
- Sec.Header.SizeOfRawData = alignTo(Sec.Header.VirtualSize,
- Obj.IsPE ? Obj.PeHeader.FileAlignment : 1);
+ Sec.setOwnedContents(Contents);
+ Sec.Name = Name;
+ Sec.Header.VirtualSize = NeedVA ? Sec.getContents().size() : 0u;
+ Sec.Header.VirtualAddress = NeedVA ? getNextRVA(Obj) : 0u;
+ Sec.Header.SizeOfRawData =
+ NeedVA ? alignTo(Sec.Header.VirtualSize,
+ Obj.IsPE ? Obj.PeHeader.FileAlignment : 1)
+ : Sec.getContents().size();
// Sec.Header.PointerToRawData is filled in by the writer.
Sec.Header.PointerToRelocations = 0;
Sec.Header.PointerToLinenumbers = 0;
// Sec.Header.NumberOfRelocations is filled in by the writer.
Sec.Header.NumberOfLinenumbers = 0;
- Sec.Header.Characteristics = IMAGE_SCN_CNT_INITIALIZED_DATA |
- IMAGE_SCN_MEM_READ | IMAGE_SCN_MEM_DISCARDABLE;
- Sections.push_back(Sec);
- Obj.addSections(Sections);
+ Sec.Header.Characteristics = Characteristics;
+
+ Obj.addSections(Sec);
+}
+
+static void addGnuDebugLink(Object &Obj, StringRef DebugLinkFile) {
+ std::vector<uint8_t> Contents =
+ createGnuDebugLinkSectionContents(DebugLinkFile);
+ addSection(Obj, ".gnu_debuglink", Contents,
+ IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_MEM_READ |
+ IMAGE_SCN_MEM_DISCARDABLE);
}
static Error handleArgs(const CopyConfig &Config, Object &Obj) {
@@ -92,8 +94,7 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) {
Obj.removeSections([&Config](const Section &Sec) {
// Contrary to --only-keep-debug, --only-section fully removes sections that
// aren't mentioned.
- if (!Config.OnlySection.empty() &&
- !is_contained(Config.OnlySection, Sec.Name))
+ if (!Config.OnlySection.empty() && !Config.OnlySection.matches(Sec.Name))
return true;
if (Config.StripDebug || Config.StripAll || Config.StripAllGNU ||
@@ -103,7 +104,7 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) {
return true;
}
- if (is_contained(Config.ToRemove, Sec.Name))
+ if (Config.ToRemove.matches(Sec.Name))
return true;
return false;
@@ -137,7 +138,7 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) {
if (Config.StripAll || Config.StripAllGNU)
return true;
- if (is_contained(Config.SymbolsToRemove, Sym.Name)) {
+ if (Config.SymbolsToRemove.matches(Sym.Name)) {
// Explicitly removing a referenced symbol is an error.
if (Sym.Referenced)
reportError(Config.OutputFilename,
@@ -156,7 +157,7 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) {
if (Sym.Sym.StorageClass == IMAGE_SYM_CLASS_STATIC ||
Sym.Sym.SectionNumber == 0)
if (Config.StripUnneeded ||
- is_contained(Config.UnneededSymbolsToRemove, Sym.Name))
+ Config.UnneededSymbolsToRemove.matches(Sym.Name))
return true;
// GNU objcopy keeps referenced local symbols and external symbols
@@ -171,21 +172,38 @@ static Error handleArgs(const CopyConfig &Config, Object &Obj) {
return false;
});
+ for (const auto &Flag : Config.AddSection) {
+ StringRef SecName, FileName;
+ std::tie(SecName, FileName) = Flag.split("=");
+
+ auto BufOrErr = MemoryBuffer::getFile(FileName);
+ if (!BufOrErr)
+ return createFileError(FileName, errorCodeToError(BufOrErr.getError()));
+ auto Buf = std::move(*BufOrErr);
+
+ addSection(
+ Obj, SecName,
+ makeArrayRef(reinterpret_cast<const uint8_t *>(Buf->getBufferStart()),
+ Buf->getBufferSize()),
+ IMAGE_SCN_CNT_INITIALIZED_DATA | IMAGE_SCN_ALIGN_1BYTES);
+ }
+
if (!Config.AddGnuDebugLink.empty())
addGnuDebugLink(Obj, Config.AddGnuDebugLink);
if (Config.AllowBrokenLinks || !Config.BuildIdLinkDir.empty() ||
Config.BuildIdLinkInput || Config.BuildIdLinkOutput ||
!Config.SplitDWO.empty() || !Config.SymbolsPrefix.empty() ||
- !Config.AllocSectionsPrefix.empty() || !Config.AddSection.empty() ||
- !Config.DumpSection.empty() || !Config.KeepSection.empty() ||
+ !Config.AllocSectionsPrefix.empty() || !Config.DumpSection.empty() ||
+ !Config.KeepSection.empty() || Config.NewSymbolVisibility ||
!Config.SymbolsToGlobalize.empty() || !Config.SymbolsToKeep.empty() ||
!Config.SymbolsToLocalize.empty() || !Config.SymbolsToWeaken.empty() ||
!Config.SymbolsToKeepGlobal.empty() || !Config.SectionsToRename.empty() ||
- !Config.SetSectionFlags.empty() || !Config.SymbolsToRename.empty() ||
- Config.ExtractDWO || Config.KeepFileSymbols || Config.LocalizeHidden ||
- Config.PreserveDates || Config.StripDWO || Config.StripNonAlloc ||
- Config.StripSections || Config.Weaken || Config.DecompressDebugSections ||
+ !Config.SetSectionAlignment.empty() || !Config.SetSectionFlags.empty() ||
+ !Config.SymbolsToRename.empty() || Config.ExtractDWO ||
+ Config.KeepFileSymbols || Config.LocalizeHidden || Config.PreserveDates ||
+ Config.StripDWO || Config.StripNonAlloc || Config.StripSections ||
+ Config.Weaken || Config.DecompressDebugSections ||
Config.DiscardMode == DiscardType::Locals ||
!Config.SymbolsToAdd.empty() || Config.EntryExpr) {
return createStringError(llvm::errc::invalid_argument,
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-24 13:02:06 +0000