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 std::unique_ptr<Error> Err = std::make_unique<Error>(Error::success());
95 auto Cur = Archive->child_begin(*Err);
97 LLVMRustSetLastError(toString(std::move(*Err)).c_str());
100 auto End = Archive->child_end();
101 return new RustArchiveIterator(Cur, End, std::move(Err));
104 extern "C" LLVMRustArchiveChildConstRef
105 LLVMRustArchiveIteratorNext(LLVMRustArchiveIteratorRef RAI) {
106 if (RAI->Cur == RAI->End)
109 // Advancing the iterator validates the next child, and this can
110 // uncover an error. LLVM requires that we check all Errors,
111 // so we only advance the iterator if we actually need to fetch
113 // This means we must not advance the iterator in the *first* call,
114 // but instead advance it *before* fetching the child in all later calls.
118 LLVMRustSetLastError(toString(std::move(*RAI->Err)).c_str());
125 if (RAI->Cur == RAI->End)
128 const Archive::Child &Child = *RAI->Cur.operator->();
129 Archive::Child *Ret = new Archive::Child(Child);
134 extern "C" void LLVMRustArchiveChildFree(LLVMRustArchiveChildRef Child) {
138 extern "C" void LLVMRustArchiveIteratorFree(LLVMRustArchiveIteratorRef RAI) {
142 extern "C" const char *
143 LLVMRustArchiveChildName(LLVMRustArchiveChildConstRef Child, size_t *Size) {
144 Expected<StringRef> NameOrErr = Child->getName();
146 // rustc_codegen_llvm currently doesn't use this error string, but it might be
147 // useful in the future, and in the mean time this tells LLVM that the
148 // error was not ignored and that it shouldn't abort the process.
149 LLVMRustSetLastError(toString(NameOrErr.takeError()).c_str());
152 StringRef Name = NameOrErr.get();
157 extern "C" const char *LLVMRustArchiveChildData(LLVMRustArchiveChildRef Child,
160 Expected<StringRef> BufOrErr = Child->getBuffer();
162 LLVMRustSetLastError(toString(BufOrErr.takeError()).c_str());
165 Buf = BufOrErr.get();
170 extern "C" LLVMRustArchiveMemberRef
171 LLVMRustArchiveMemberNew(char *Filename, char *Name,
172 LLVMRustArchiveChildRef Child) {
173 RustArchiveMember *Member = new RustArchiveMember;
174 Member->Filename = Filename;
177 Member->Child = *Child;
181 extern "C" void LLVMRustArchiveMemberFree(LLVMRustArchiveMemberRef Member) {
185 extern "C" LLVMRustResult
186 LLVMRustWriteArchive(char *Dst, size_t NumMembers,
187 const LLVMRustArchiveMemberRef *NewMembers,
188 bool WriteSymbtab, LLVMRustArchiveKind RustKind) {
190 std::vector<NewArchiveMember> Members;
191 auto Kind = fromRust(RustKind);
193 for (size_t I = 0; I < NumMembers; I++) {
194 auto Member = NewMembers[I];
195 assert(Member->Name);
196 if (Member->Filename) {
197 Expected<NewArchiveMember> MOrErr =
198 NewArchiveMember::getFile(Member->Filename, true);
200 LLVMRustSetLastError(toString(MOrErr.takeError()).c_str());
201 return LLVMRustResult::Failure;
203 MOrErr->MemberName = sys::path::filename(MOrErr->MemberName);
204 Members.push_back(std::move(*MOrErr));
206 Expected<NewArchiveMember> MOrErr =
207 NewArchiveMember::getOldMember(Member->Child, true);
209 LLVMRustSetLastError(toString(MOrErr.takeError()).c_str());
210 return LLVMRustResult::Failure;
212 Members.push_back(std::move(*MOrErr));
216 auto Result = writeArchive(Dst, Members, WriteSymbtab, Kind, true, false);
218 return LLVMRustResult::Success;
219 LLVMRustSetLastError(toString(std::move(Result)).c_str());
221 return LLVMRustResult::Failure;