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Distinguish between BSD4.4 and SVR4 symbol tables

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2004-11-20 07:29:40 +00:00
parent e651c954aa
commit 9a29db43a7
9 changed files with 146 additions and 89 deletions
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66
lib/Bytecode/Archive/ArchiveReader.cpp
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@ -41,7 +41,7 @@ Archive::parseSymbolTable(const void* data, unsigned size) {
if (At + length > End)
throw std::string("malformed symbol table");
// we don't care if it can't be inserted (duplicate entry)
symTab.insert(std::make_pair(std::string(At,length),offset));
symTab.insert(std::make_pair(std::string(At, length), offset));
At += length;
}
symTabSize = size;
@ -96,14 +96,14 @@ Archive::parseMemberHeader(const char*& At, const char* End) {
if (Hdr->name[1] == '1' && Hdr->name[2] == '/') {
if (isdigit(Hdr->name[3])) {
unsigned len = atoi(&Hdr->name[3]);
pathname.assign(At,len);
pathname.assign(At, len);
At += len;
MemberSize -= len;
flags |= ArchiveMember::HasLongFilenameFlag;
} else
throw std::string("invalid long filename");
} else if (Hdr->name[1] == '_' &&
(0==memcmp(Hdr->name,ARFILE_LLVM_SYMTAB_NAME,16))) {
(0 == memcmp(Hdr->name, ARFILE_LLVM_SYMTAB_NAME, 16))) {
// The member is using a long file name (>15 chars) format.
// This format is standard for 4.4BSD and Mac OSX operating
// systems. LLVM uses it similarly. In this format, the
@ -116,18 +116,18 @@ Archive::parseMemberHeader(const char*& At, const char* End) {
break;
case '/':
if (Hdr->name[1]== '/') {
if (0==memcmp(Hdr->name,ARFILE_STRTAB_NAME,16)) {
if (0 == memcmp(Hdr->name, ARFILE_STRTAB_NAME, 16)) {
pathname.assign(ARFILE_STRTAB_NAME);
flags |= ArchiveMember::StringTableFlag;
} else {
throw std::string("invalid string table name");
}
} else if (Hdr->name[1] == ' ') {
if (0==memcmp(Hdr->name,ARFILE_SYMTAB_NAME,16)) {
pathname.assign(ARFILE_SYMTAB_NAME);
flags |= ArchiveMember::ForeignSymbolTableFlag;
if (0 == memcmp(Hdr->name, ARFILE_SVR4_SYMTAB_NAME, 16)) {
pathname.assign(ARFILE_SVR4_SYMTAB_NAME);
flags |= ArchiveMember::SVR4SymbolTableFlag;
} else {
throw std::string("invalid foreign symbol table name");
throw std::string("invalid SVR4 symbol table name");
}
} else if (isdigit(Hdr->name[1])) {
unsigned index = atoi(&Hdr->name[1]);
@ -138,7 +138,7 @@ Archive::parseMemberHeader(const char*& At, const char* End) {
const char* last_p = p;
while (p < endp) {
if (*p == '\n' && *last_p == '/') {
pathname.assign(namep,last_p-namep);
pathname.assign(namep, last_p - namep);
flags |= ArchiveMember::HasLongFilenameFlag;
break;
}
@ -152,17 +152,24 @@ Archive::parseMemberHeader(const char*& At, const char* End) {
}
}
break;
case '_':
if (Hdr->name[1] == '_' &&
(0 == memcmp(Hdr->name, ARFILE_BSD4_SYMTAB_NAME, 16))) {
pathname.assign(ARFILE_BSD4_SYMTAB_NAME);
flags |= ArchiveMember::BSD4SymbolTableFlag;
}
break;
default:
char* slash = (char*) memchr(Hdr->name,'/',16);
char* slash = (char*) memchr(Hdr->name, '/', 16);
if (slash == 0)
slash = Hdr->name + 16;
pathname.assign(Hdr->name,slash-Hdr->name);
pathname.assign(Hdr->name, slash - Hdr->name);
break;
}
// Determine if this is a bytecode file
switch (sys::IdentifyFileType(At,4)) {
switch (sys::IdentifyFileType(At, 4)) {
case sys::BytecodeFileType:
flags |= ArchiveMember::BytecodeFlag;
break;
@ -183,7 +190,7 @@ Archive::parseMemberHeader(const char*& At, const char* End) {
member->path.setFile(pathname);
member->info.fileSize = MemberSize;
member->info.modTime.fromEpochTime(atoi(Hdr->date));
sscanf(Hdr->mode,"%o",&(member->info.mode));
sscanf(Hdr->mode, "%o", &(member->info.mode));
member->info.user = atoi(Hdr->uid);
member->info.group = atoi(Hdr->gid);
member->flags = flags;
@ -195,7 +202,7 @@ Archive::parseMemberHeader(const char*& At, const char* End) {
void
Archive::checkSignature() {
// Check the magic string at file's header
if (mapfile->size() < 8 || memcmp(base, ARFILE_MAGIC,8))
if (mapfile->size() < 8 || memcmp(base, ARFILE_MAGIC, 8))
throw std::string("invalid signature for an archive file");
}
@ -222,9 +229,14 @@ Archive::loadArchive() {
ArchiveMember* mbr = parseMemberHeader(At, End);
// check if this is the foreign symbol table
if (mbr->isForeignSymbolTable()) {
if (mbr->isSVR4SymbolTable() || mbr->isBSD4SymbolTable()) {
// We just save this but don't do anything special
// with it. It doesn't count as the "first file".
if (foreignST) {
// What? Multiple foreign symbol tables? Just chuck it
// and retain the last one found.
delete foreignST;
}
foreignST = mbr;
At += mbr->getSize();
if ((intptr_t(At) & 1) == 1)
@ -234,7 +246,7 @@ Archive::loadArchive() {
// variable. This will be used to get the names of the
// members that use the "/ddd" format for their names
// (SVR4 style long names).
strtab.assign(At,mbr->getSize());
strtab.assign(At, mbr->getSize());
At += mbr->getSize();
if ((intptr_t(At) & 1) == 1)
At++;
@ -244,7 +256,7 @@ Archive::loadArchive() {
// already, its an error. Otherwise, parse the symbol table and move on.
if (seenSymbolTable)
throw std::string("invalid archive: multiple symbol tables");
parseSymbolTable(mbr->getData(),mbr->getSize());
parseSymbolTable(mbr->getData(), mbr->getSize());
seenSymbolTable = true;
At += mbr->getSize();
if ((intptr_t(At) & 1) == 1)
@ -269,7 +281,7 @@ Archive::loadArchive() {
Archive*
Archive::OpenAndLoad(const sys::Path& file) {
Archive* result = new Archive(file,true);
Archive* result = new Archive(file, true);
result->loadArchive();
@ -314,7 +326,7 @@ Archive::loadSymbolTable() {
const char* FirstFile = At;
ArchiveMember* mbr = parseMemberHeader(At, End);
if (mbr->isForeignSymbolTable()) {
if (mbr->isSVR4SymbolTable() || mbr->isBSD4SymbolTable()) {
// Skip the foreign symbol table, we don't do anything with it
At += mbr->getSize();
if ((intptr_t(At) & 1) == 1)
@ -323,24 +335,24 @@ Archive::loadSymbolTable() {
// Read the next one
FirstFile = At;
mbr = parseMemberHeader(At,End);
mbr = parseMemberHeader(At, End);
}
if (mbr->isStringTable()) {
// Process the string table entry
strtab.assign((const char*)mbr->getData(),mbr->getSize());
strtab.assign((const char*)mbr->getData(), mbr->getSize());
At += mbr->getSize();
if ((intptr_t(At) & 1) == 1)
At++;
delete mbr;
// Get the next one
FirstFile = At;
mbr = parseMemberHeader(At,End);
mbr = parseMemberHeader(At, End);
}
// See if its the symbol table
if (mbr->isLLVMSymbolTable()) {
parseSymbolTable(mbr->getData(),mbr->getSize());
parseSymbolTable(mbr->getData(), mbr->getSize());
FirstFile = At + mbr->getSize();
if ((intptr_t(At) & 1) == 1)
FirstFile++;
@ -358,7 +370,7 @@ Archive::loadSymbolTable() {
// Open the archive and load just the symbol tables
Archive*
Archive::OpenAndLoadSymbols(const sys::Path& file) {
Archive* result = new Archive(file,true);
Archive* result = new Archive(file, true);
result->loadSymbolTable();
@ -399,7 +411,7 @@ Archive::findModuleDefiningSymbol(const std::string& symbol) {
(const unsigned char*) mbr->getData(), mbr->getSize(),
FullMemberName, 0);
modules.insert(std::make_pair(fileOffset,std::make_pair(mp,mbr)));
modules.insert(std::make_pair(fileOffset, std::make_pair(mp, mbr)));
return mp;
}
@ -441,11 +453,11 @@ Archive::findModulesDefiningSymbols(std::set<std::string>& symbols,
// Insert the module's symbols into the symbol table
for (std::vector<std::string>::iterator I = symbols.begin(),
E=symbols.end(); I != E; ++I ) {
symTab.insert(std::make_pair(*I,offset));
symTab.insert(std::make_pair(*I, offset));
}
// Insert the ModuleProvider and the ArchiveMember into the table of
// modules.
modules.insert(std::make_pair(offset,std::make_pair(MP,mbr)));
modules.insert(std::make_pair(offset, std::make_pair(MP, mbr)));
} else {
throw std::string("Can't parse bytecode member: ") +
mbr->getPath().get();