Adjust DT_VERSYM/VERNEED/VERDEF dynamic sections

  This is recent addition to bionic linker. The symbol
  versioning was not supported before therefore this bug
  went unnoticed.

  Also normal exit when there is not enought relocations
  to pack. This is to enable integration of relocation_packer
  to android build system.

Bug: http://b/20139821
Bug: http://b/18051137
Change-Id: Iaf36ae11c8e4b15cf785b6dd1712a3bdcf47cc45

1 files changed, 9 insertions, 6 deletions

diff --git a/tools/relocation_packer/src/elf_file.cc b/tools/relocation_packer/src/elf_file.cc
index 20b25ef..6843f5b 100644
--- a/tools/relocation_packer/src/elf_file.cc
+++ b/tools/relocation_packer/src/elf_file.cc
@@ -439,6 +439,9 @@ void ElfFile<ELF>::AdjustDynamicSectionForHole(Elf_Scn* dynamic_section,
                                 tag == DT_JMPREL ||
                                 tag == DT_INIT_ARRAY ||
                                 tag == DT_FINI_ARRAY ||
+                                tag == DT_VERSYM ||
+                                tag == DT_VERNEED ||
+                                tag == DT_VERDEF ||
                                 tag == DT_ANDROID_REL||
                                 tag == DT_ANDROID_RELA);
 
@@ -586,7 +589,7 @@ bool ElfFile<ELF>::PackRelocations() {
     const typename ELF::Rel* relocations_base = reinterpret_cast<typename ELF::Rel*>(data->d_buf);
     ConvertRelArrayToRelaVector(relocations_base,
         data->d_size / sizeof(typename ELF::Rel), &relocations);
-    LOG(INFO) << "Relocations   : REL";
+    VLOG(1) << "Relocations   : REL";
   } else if (relocations_type_ == RELA) {
     // Convert data to a vector of relocations with addends.
     const typename ELF::Rela* relocations_base = reinterpret_cast<typename ELF::Rela*>(data->d_buf);
@@ -594,7 +597,7 @@ bool ElfFile<ELF>::PackRelocations() {
         relocations_base,
         relocations_base + data->d_size / sizeof(relocations[0]));
 
-    LOG(INFO) << "Relocations   : RELA";
+    VLOG(1) << "Relocations   : RELA";
   } else {
     NOTREACHED();
   }
@@ -618,18 +621,18 @@ bool ElfFile<ELF>::PackTypedRelocations(std::vector<typename ELF::Rela>* relocat
       relocations_type_ == RELA ? sizeof(typename ELF::Rela) : sizeof(typename ELF::Rel);
   const size_t initial_bytes = relocations->size() * rel_size;
 
-  LOG(INFO) << "Unpacked                   : " << initial_bytes << " bytes";
+  VLOG(1) << "Unpacked                   : " << initial_bytes << " bytes";
   std::vector<uint8_t> packed;
   RelocationPacker<ELF> packer;
 
   // Pack relocations: dry run to estimate memory savings.
   packer.PackRelocations(*relocations, &packed);
   const size_t packed_bytes_estimate = packed.size() * sizeof(packed[0]);
-  LOG(INFO) << "Packed         (no padding): " << packed_bytes_estimate << " bytes";
+  VLOG(1) << "Packed         (no padding): " << packed_bytes_estimate << " bytes";
 
   if (packed.empty()) {
     LOG(INFO) << "Too few relocations to pack";
-    return false;
+    return true;
   }
 
   // Pre-calculate the size of the hole we will close up when we rewrite
@@ -646,7 +649,7 @@ bool ElfFile<ELF>::PackTypedRelocations(std::vector<typename ELF::Rela>* relocat
   // Adjusting for alignment may have removed any packing benefit.
   if (hole_size == 0) {
     LOG(INFO) << "Too few relocations to pack after alignment";
-    return false;
+    return true;
   }
 
   if (hole_size <= 0) {