vendor/llvm/llvm-trunk-r300422

1 files changed, 28 insertions, 2 deletions

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index 63b56f725209..df9d2ceba329 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -443,7 +443,7 @@ Error RuntimeDyldImpl::computeTotalAllocSize(const ObjectFile &Obj,
        SI != SE; ++SI) {
     const SectionRef &Section = *SI;
 
-    bool IsRequired = isRequiredForExecution(Section);
+    bool IsRequired = isRequiredForExecution(Section) || ProcessAllSections;
 
     // Consider only the sections that are required to be loaded for execution
     if (IsRequired) {
@@ -484,6 +484,14 @@ Error RuntimeDyldImpl::computeTotalAllocSize(const ObjectFile &Obj,
     }
   }
 
+  // Compute Global Offset Table size. If it is not zero we
+  // also update alignment, which is equal to a size of a
+  // single GOT entry.
+  if (unsigned GotSize = computeGOTSize(Obj)) {
+    RWSectionSizes.push_back(GotSize);
+    RWDataAlign = std::max<uint32_t>(RWDataAlign, getGOTEntrySize());
+  }
+
   // Compute the size of all common symbols
   uint64_t CommonSize = 0;
   uint32_t CommonAlign = 1;
@@ -518,6 +526,24 @@ Error RuntimeDyldImpl::computeTotalAllocSize(const ObjectFile &Obj,
   return Error::success();
 }
 
+// compute GOT size
+unsigned RuntimeDyldImpl::computeGOTSize(const ObjectFile &Obj) {
+  size_t GotEntrySize = getGOTEntrySize();
+  if (!GotEntrySize)
+    return 0;
+
+  size_t GotSize = 0;
+  for (section_iterator SI = Obj.section_begin(), SE = Obj.section_end();
+       SI != SE; ++SI) {
+
+    for (const RelocationRef &Reloc : SI->relocations())
+      if (relocationNeedsGot(Reloc))
+        GotSize += GotEntrySize;
+  }
+
+  return GotSize;
+}
+
 // compute stub buffer size for the given section
 unsigned RuntimeDyldImpl::computeSectionStubBufSize(const ObjectFile &Obj,
                                                     const SectionRef &Section) {
@@ -677,7 +703,7 @@ RuntimeDyldImpl::emitSection(const ObjectFile &Obj,
   unsigned Alignment = (unsigned)Alignment64 & 0xffffffffL;
   unsigned PaddingSize = 0;
   unsigned StubBufSize = 0;
-  bool IsRequired = isRequiredForExecution(Section);
+  bool IsRequired = isRequiredForExecution(Section) || ProcessAllSections;
   bool IsVirtual = Section.isVirtual();
   bool IsZeroInit = isZeroInit(Section);
   bool IsReadOnly = isReadOnlyData(Section);