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[oota-llvm.git] / lib / ExecutionEngine / RuntimeDyld / RuntimeDyld.cpp

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index f6dccb106d9bbe38e9b9e7bdbd0335c930ab727b..3685fece1b59429dc3259047be69346fe2c222cf 100644 (file)
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -12,12 +12,13 @@
 //===----------------------------------------------------------------------===//
 
 #define DEBUG_TYPE "dyld"
+#include "llvm/ExecutionEngine/RuntimeDyld.h"
 #include "ObjectImageCommon.h"
-#include "RuntimeDyldImpl.h"
 #include "RuntimeDyldELF.h"
+#include "RuntimeDyldImpl.h"
 #include "RuntimeDyldMachO.h"
-#include "llvm/Support/Path.h"
 #include "llvm/Support/MathExtras.h"
+#include "llvm/Support/Path.h"
 
 using namespace llvm;
 using namespace llvm::object;
@@ -125,9 +126,7 @@ ObjectImage *RuntimeDyldImpl::loadObject(ObjectBuffer *InputBuffer) {
                      << " flags: " << flags
                      << " SID: " << SectionID
                      << " Offset: " << format("%p", SectOffset));
-        bool isGlobal = flags & SymbolRef::SF_Global;
-        if (isGlobal)
-          GlobalSymbolTable[Name] = SymbolLoc(SectionID, SectOffset);
+        GlobalSymbolTable[Name] = SymbolLoc(SectionID, SectOffset);
       }
     }
     DEBUG(dbgs() << "\tType: " << SymType << " Name: " << Name << "\n");
@@ -182,7 +181,7 @@ void RuntimeDyldImpl::emitCommonSymbols(ObjectImage &Obj,
   // Allocate memory for the section
   unsigned SectionID = Sections.size();
   uint8_t *Addr = MemMgr->allocateDataSection(TotalSize, sizeof(void*),
-                                              SectionID);
+                                              SectionID, false);
   if (!Addr)
     report_fatal_error("Unable to allocate memory for common symbols!");
   uint64_t Offset = 0;
@@ -237,11 +236,13 @@ unsigned RuntimeDyldImpl::emitSection(ObjectImage &Obj,
   bool IsRequired;
   bool IsVirtual;
   bool IsZeroInit;
+  bool IsReadOnly;
   uint64_t DataSize;
   StringRef Name;
   Check(Section.isRequiredForExecution(IsRequired));
   Check(Section.isVirtual(IsVirtual));
   Check(Section.isZeroInit(IsZeroInit));
+  Check(Section.isReadOnlyData(IsReadOnly));
   Check(Section.getSize(DataSize));
   Check(Section.getName(Name));
 
@@ -256,7 +257,7 @@ unsigned RuntimeDyldImpl::emitSection(ObjectImage &Obj,
     Allocate = DataSize + StubBufSize;
     Addr = IsCode
       ? MemMgr->allocateCodeSection(Allocate, Alignment, SectionID)
-      : MemMgr->allocateDataSection(Allocate, Alignment, SectionID);
+      : MemMgr->allocateDataSection(Allocate, Alignment, SectionID, IsReadOnly);
     if (!Addr)
       report_fatal_error("Unable to allocate section memory!");
 
@@ -451,6 +452,12 @@ void RuntimeDyldImpl::resolveExternalSymbols() {
 //===----------------------------------------------------------------------===//
 // RuntimeDyld class implementation
 RuntimeDyld::RuntimeDyld(RTDyldMemoryManager *mm) {
+  // FIXME: There's a potential issue lurking here if a single instance of
+  // RuntimeDyld is used to load multiple objects.  The current implementation
+  // associates a single memory manager with a RuntimeDyld instance.  Even
+  // though the public class spawns a new 'impl' instance for each load,
+  // they share a single memory manager.  This can become a problem when page
+  // permissions are applied.
   Dyld = 0;
   MM = mm;
 }