1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
#include "LLVMWrapper.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/ArchiveWriter.h"
#include "llvm/Support/Path.h"
using namespace llvm;
using namespace llvm::object;
struct RustArchiveMember {
const char *Filename;
const char *Name;
Archive::Child Child;
RustArchiveMember()
: Filename(nullptr), Name(nullptr), Child(nullptr, nullptr, nullptr) {}
~RustArchiveMember() {}
};
struct RustArchiveIterator {
bool First;
Archive::child_iterator Cur;
Archive::child_iterator End;
std::unique_ptr<Error> Err;
RustArchiveIterator(Archive::child_iterator Cur, Archive::child_iterator End,
std::unique_ptr<Error> Err)
: First(true), Cur(Cur), End(End), Err(std::move(Err)) {}
};
enum class LLVMRustArchiveKind {
GNU,
BSD,
DARWIN,
COFF,
AIX_BIG,
};
static Archive::Kind fromRust(LLVMRustArchiveKind Kind) {
switch (Kind) {
case LLVMRustArchiveKind::GNU:
return Archive::K_GNU;
case LLVMRustArchiveKind::BSD:
return Archive::K_BSD;
case LLVMRustArchiveKind::DARWIN:
return Archive::K_DARWIN;
case LLVMRustArchiveKind::COFF:
return Archive::K_COFF;
case LLVMRustArchiveKind::AIX_BIG:
return Archive::K_AIXBIG;
default:
report_fatal_error("Bad ArchiveKind.");
}
}
typedef OwningBinary<Archive> *LLVMRustArchiveRef;
typedef RustArchiveMember *LLVMRustArchiveMemberRef;
typedef Archive::Child *LLVMRustArchiveChildRef;
typedef Archive::Child const *LLVMRustArchiveChildConstRef;
typedef RustArchiveIterator *LLVMRustArchiveIteratorRef;
extern "C" LLVMRustArchiveRef LLVMRustOpenArchive(char *Path) {
ErrorOr<std::unique_ptr<MemoryBuffer>> BufOr = MemoryBuffer::getFile(
Path, /*IsText*/ false, /*RequiresNullTerminator=*/false);
if (!BufOr) {
LLVMRustSetLastError(BufOr.getError().message().c_str());
return nullptr;
}
Expected<std::unique_ptr<Archive>> ArchiveOr =
Archive::create(BufOr.get()->getMemBufferRef());
if (!ArchiveOr) {
LLVMRustSetLastError(toString(ArchiveOr.takeError()).c_str());
return nullptr;
}
OwningBinary<Archive> *Ret = new OwningBinary<Archive>(
std::move(ArchiveOr.get()), std::move(BufOr.get()));
return Ret;
}
extern "C" void LLVMRustDestroyArchive(LLVMRustArchiveRef RustArchive) {
delete RustArchive;
}
extern "C" LLVMRustArchiveIteratorRef
LLVMRustArchiveIteratorNew(LLVMRustArchiveRef RustArchive) {
Archive *Archive = RustArchive->getBinary();
std::unique_ptr<Error> Err = std::make_unique<Error>(Error::success());
auto Cur = Archive->child_begin(*Err);
if (*Err) {
LLVMRustSetLastError(toString(std::move(*Err)).c_str());
return nullptr;
}
auto End = Archive->child_end();
return new RustArchiveIterator(Cur, End, std::move(Err));
}
extern "C" LLVMRustArchiveChildConstRef
LLVMRustArchiveIteratorNext(LLVMRustArchiveIteratorRef RAI) {
if (RAI->Cur == RAI->End)
return nullptr;
// Advancing the iterator validates the next child, and this can
// uncover an error. LLVM requires that we check all Errors,
// so we only advance the iterator if we actually need to fetch
// the next child.
// This means we must not advance the iterator in the *first* call,
// but instead advance it *before* fetching the child in all later calls.
if (!RAI->First) {
++RAI->Cur;
if (*RAI->Err) {
LLVMRustSetLastError(toString(std::move(*RAI->Err)).c_str());
return nullptr;
}
} else {
RAI->First = false;
}
if (RAI->Cur == RAI->End)
return nullptr;
const Archive::Child &Child = *RAI->Cur.operator->();
Archive::Child *Ret = new Archive::Child(Child);
return Ret;
}
extern "C" void LLVMRustArchiveChildFree(LLVMRustArchiveChildRef Child) {
delete Child;
}
extern "C" void LLVMRustArchiveIteratorFree(LLVMRustArchiveIteratorRef RAI) {
delete RAI;
}
extern "C" const char *
LLVMRustArchiveChildName(LLVMRustArchiveChildConstRef Child, size_t *Size) {
Expected<StringRef> NameOrErr = Child->getName();
if (!NameOrErr) {
// rustc_codegen_llvm currently doesn't use this error string, but it might
// be useful in the future, and in the meantime this tells LLVM that the
// error was not ignored and that it shouldn't abort the process.
LLVMRustSetLastError(toString(NameOrErr.takeError()).c_str());
return nullptr;
}
StringRef Name = NameOrErr.get();
*Size = Name.size();
return Name.data();
}
extern "C" LLVMRustArchiveMemberRef
LLVMRustArchiveMemberNew(char *Filename, char *Name,
LLVMRustArchiveChildRef Child) {
RustArchiveMember *Member = new RustArchiveMember;
Member->Filename = Filename;
Member->Name = Name;
if (Child)
Member->Child = *Child;
return Member;
}
extern "C" void LLVMRustArchiveMemberFree(LLVMRustArchiveMemberRef Member) {
delete Member;
}
extern "C" LLVMRustResult LLVMRustWriteArchive(
char *Dst, size_t NumMembers, const LLVMRustArchiveMemberRef *NewMembers,
bool WriteSymbtab, LLVMRustArchiveKind RustKind, bool isEC) {
std::vector<NewArchiveMember> Members;
auto Kind = fromRust(RustKind);
for (size_t I = 0; I < NumMembers; I++) {
auto Member = NewMembers[I];
assert(Member->Name);
if (Member->Filename) {
Expected<NewArchiveMember> MOrErr =
NewArchiveMember::getFile(Member->Filename, true);
if (!MOrErr) {
LLVMRustSetLastError(toString(MOrErr.takeError()).c_str());
return LLVMRustResult::Failure;
}
MOrErr->MemberName = sys::path::filename(MOrErr->MemberName);
Members.push_back(std::move(*MOrErr));
} else {
Expected<NewArchiveMember> MOrErr =
NewArchiveMember::getOldMember(Member->Child, true);
if (!MOrErr) {
LLVMRustSetLastError(toString(MOrErr.takeError()).c_str());
return LLVMRustResult::Failure;
}
Members.push_back(std::move(*MOrErr));
}
}
auto SymtabMode = WriteSymbtab ? SymtabWritingMode::NormalSymtab
: SymtabWritingMode::NoSymtab;
auto Result =
writeArchive(Dst, Members, SymtabMode, Kind, true, false, nullptr, isEC);
if (!Result)
return LLVMRustResult::Success;
LLVMRustSetLastError(toString(std::move(Result)).c_str());
return LLVMRustResult::Failure;
}
|
