Layout helper function.
Introduce a helper method to add a section to the end of a layout. This
will be used by the ELF ObjectWriter code to add the metadata sections
(symbol table, etc) to the end of an object file.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111171 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCAssembler.cpp b/lib/MC/MCAssembler.cpp
index 8e255aa..35f3956 100644
--- a/lib/MC/MCAssembler.cpp
+++ b/lib/MC/MCAssembler.cpp
@@ -652,6 +652,40 @@
assert(OW->getStream().tell() - Start == Layout.getSectionFileSize(SD));
}
+void MCAssembler::AddSectionToTheEnd(MCSectionData &SD, MCAsmLayout &Layout) {
+ // Create dummy fragments and assign section ordinals.
+ unsigned SectionIndex = 0;
+ for (MCAssembler::iterator it = begin(), ie = end(); it != ie; ++it)
+ SectionIndex++;
+
+ SD.setOrdinal(SectionIndex);
+
+ // Assign layout order indices to sections and fragments.
+ unsigned FragmentIndex = 0;
+ unsigned i = 0;
+ for (unsigned e = Layout.getSectionOrder().size(); i != e; ++i) {
+ MCSectionData *SD = Layout.getSectionOrder()[i];
+
+ for (MCSectionData::iterator it2 = SD->begin(),
+ ie2 = SD->end(); it2 != ie2; ++it2)
+ FragmentIndex++;
+ }
+
+ SD.setLayoutOrder(i);
+ for (MCSectionData::iterator it2 = SD.begin(),
+ ie2 = SD.end(); it2 != ie2; ++it2) {
+ it2->setLayoutOrder(FragmentIndex++);
+ }
+ Layout.getSectionOrder().push_back(&SD);
+
+ Layout.LayoutSection(&SD);
+
+ // Layout until everything fits.
+ while (LayoutOnce(Layout))
+ continue;
+
+}
+
void MCAssembler::Finish(MCObjectWriter *Writer) {
DEBUG_WITH_TYPE("mc-dump", {
llvm::errs() << "assembler backend - pre-layout\n--\n";