1 #include "LLVMWrapper.h"
3 #include "llvm/Object/Archive.h"
4 #include "llvm/Object/ArchiveWriter.h"
5 #include "llvm/Support/Path.h"
8 using namespace llvm::object;
10 struct RustArchiveMember {
16 : Filename(nullptr), Name(nullptr),
17 Child(nullptr, nullptr, nullptr)
20 ~RustArchiveMember() {}
23 struct RustArchiveIterator {
25 Archive::child_iterator Cur;
26 Archive::child_iterator End;
27 std::unique_ptr<Error> Err;
29 RustArchiveIterator(Archive::child_iterator Cur, Archive::child_iterator End,
30 std::unique_ptr<Error> Err)
34 Err(std::move(Err)) {}
37 enum class LLVMRustArchiveKind {
44 static Archive::Kind fromRust(LLVMRustArchiveKind Kind) {
46 case LLVMRustArchiveKind::GNU:
47 return Archive::K_GNU;
48 case LLVMRustArchiveKind::BSD:
49 return Archive::K_BSD;
50 case LLVMRustArchiveKind::DARWIN:
51 return Archive::K_DARWIN;
52 case LLVMRustArchiveKind::COFF:
53 return Archive::K_COFF;
55 report_fatal_error("Bad ArchiveKind.");
59 typedef OwningBinary<Archive> *LLVMRustArchiveRef;
60 typedef RustArchiveMember *LLVMRustArchiveMemberRef;
61 typedef Archive::Child *LLVMRustArchiveChildRef;
62 typedef Archive::Child const *LLVMRustArchiveChildConstRef;
63 typedef RustArchiveIterator *LLVMRustArchiveIteratorRef;
65 extern "C" LLVMRustArchiveRef LLVMRustOpenArchive(char *Path) {
66 ErrorOr<std::unique_ptr<MemoryBuffer>> BufOr =
67 MemoryBuffer::getFile(Path, -1, false);
69 LLVMRustSetLastError(BufOr.getError().message().c_str());
73 Expected<std::unique_ptr<Archive>> ArchiveOr =
74 Archive::create(BufOr.get()->getMemBufferRef());
77 LLVMRustSetLastError(toString(ArchiveOr.takeError()).c_str());
81 OwningBinary<Archive> *Ret = new OwningBinary<Archive>(
82 std::move(ArchiveOr.get()), std::move(BufOr.get()));
87 extern "C" void LLVMRustDestroyArchive(LLVMRustArchiveRef RustArchive) {
91 extern "C" LLVMRustArchiveIteratorRef
92 LLVMRustArchiveIteratorNew(LLVMRustArchiveRef RustArchive) {
93 Archive *Archive = RustArchive->getBinary();
94 #if LLVM_VERSION_GE(10, 0)
95 std::unique_ptr<Error> Err = std::make_unique<Error>(Error::success());
97 std::unique_ptr<Error> Err = llvm::make_unique<Error>(Error::success());
99 auto Cur = Archive->child_begin(*Err);
101 LLVMRustSetLastError(toString(std::move(*Err)).c_str());
104 auto End = Archive->child_end();
105 return new RustArchiveIterator(Cur, End, std::move(Err));
108 extern "C" LLVMRustArchiveChildConstRef
109 LLVMRustArchiveIteratorNext(LLVMRustArchiveIteratorRef RAI) {
110 if (RAI->Cur == RAI->End)
113 // Advancing the iterator validates the next child, and this can
114 // uncover an error. LLVM requires that we check all Errors,
115 // so we only advance the iterator if we actually need to fetch
117 // This means we must not advance the iterator in the *first* call,
118 // but instead advance it *before* fetching the child in all later calls.
122 LLVMRustSetLastError(toString(std::move(*RAI->Err)).c_str());
129 if (RAI->Cur == RAI->End)
132 const Archive::Child &Child = *RAI->Cur.operator->();
133 Archive::Child *Ret = new Archive::Child(Child);
138 extern "C" void LLVMRustArchiveChildFree(LLVMRustArchiveChildRef Child) {
142 extern "C" void LLVMRustArchiveIteratorFree(LLVMRustArchiveIteratorRef RAI) {
146 extern "C" const char *
147 LLVMRustArchiveChildName(LLVMRustArchiveChildConstRef Child, size_t *Size) {
148 Expected<StringRef> NameOrErr = Child->getName();
150 // rustc_codegen_llvm currently doesn't use this error string, but it might be
151 // useful in the future, and in the mean time this tells LLVM that the
152 // error was not ignored and that it shouldn't abort the process.
153 LLVMRustSetLastError(toString(NameOrErr.takeError()).c_str());
156 StringRef Name = NameOrErr.get();
161 extern "C" const char *LLVMRustArchiveChildData(LLVMRustArchiveChildRef Child,
164 Expected<StringRef> BufOrErr = Child->getBuffer();
166 LLVMRustSetLastError(toString(BufOrErr.takeError()).c_str());
169 Buf = BufOrErr.get();
174 extern "C" LLVMRustArchiveMemberRef
175 LLVMRustArchiveMemberNew(char *Filename, char *Name,
176 LLVMRustArchiveChildRef Child) {
177 RustArchiveMember *Member = new RustArchiveMember;
178 Member->Filename = Filename;
181 Member->Child = *Child;
185 extern "C" void LLVMRustArchiveMemberFree(LLVMRustArchiveMemberRef Member) {
189 extern "C" LLVMRustResult
190 LLVMRustWriteArchive(char *Dst, size_t NumMembers,
191 const LLVMRustArchiveMemberRef *NewMembers,
192 bool WriteSymbtab, LLVMRustArchiveKind RustKind) {
194 std::vector<NewArchiveMember> Members;
195 auto Kind = fromRust(RustKind);
197 for (size_t I = 0; I < NumMembers; I++) {
198 auto Member = NewMembers[I];
199 assert(Member->Name);
200 if (Member->Filename) {
201 Expected<NewArchiveMember> MOrErr =
202 NewArchiveMember::getFile(Member->Filename, true);
204 LLVMRustSetLastError(toString(MOrErr.takeError()).c_str());
205 return LLVMRustResult::Failure;
207 MOrErr->MemberName = sys::path::filename(MOrErr->MemberName);
208 Members.push_back(std::move(*MOrErr));
210 Expected<NewArchiveMember> MOrErr =
211 NewArchiveMember::getOldMember(Member->Child, true);
213 LLVMRustSetLastError(toString(MOrErr.takeError()).c_str());
214 return LLVMRustResult::Failure;
216 Members.push_back(std::move(*MOrErr));
220 auto Result = writeArchive(Dst, Members, WriteSymbtab, Kind, true, false);
222 return LLVMRustResult::Success;
223 LLVMRustSetLastError(toString(std::move(Result)).c_str());
225 return LLVMRustResult::Failure;