- // bit5+ = Slot # for type
- unsigned oSlot = ((unsigned)Slot << 5) | (getEncodedLinkage(I) << 2) |
- (I->hasInitializer() << 1) | (unsigned)I->isConstant();
- output_vbr(oSlot );
+ // bit5+ = Slot # for type.
+ bool HasExtensionWord = (I->getAlignment() != 0) || I->hasSection();
+
+ // If we need to use the extension byte, set linkage=3(internal) and
+ // initializer = 0 (impossible!).
+ if (!HasExtensionWord) {
+ unsigned oSlot = ((unsigned)Slot << 5) | (getEncodedLinkage(I) << 2) |
+ (I->hasInitializer() << 1) | (unsigned)I->isConstant();
+ output_vbr(oSlot);
+ } else {
+ unsigned oSlot = ((unsigned)Slot << 5) | (3 << 2) |
+ (0 << 1) | (unsigned)I->isConstant();
+ output_vbr(oSlot);
+
+ // The extension word has this format: bit 0 = has initializer, bit 1-3 =
+ // linkage, bit 4-8 = alignment (log2), bit 9 = has SectionID,
+ // bits 10+ = future use.
+ unsigned ExtWord = (unsigned)I->hasInitializer() |
+ (getEncodedLinkage(I) << 1) |
+ ((Log2_32(I->getAlignment())+1) << 4) |
+ ((unsigned)I->hasSection() << 9);
+ output_vbr(ExtWord);
+ if (I->hasSection()) {
+ // Give section names unique ID's.
+ unsigned &Entry = SectionID[I->getSection()];
+ if (Entry == 0) {
+ Entry = ++SectionIDCounter;
+ SectionNames.push_back(I->getSection());
+ }
+ output_vbr(Entry);
+ }
+ }