commit a59dd80f9f48cb750d329d4d4af2d99d72b484d1
author Alex Light <allight@google.com> Wed Jul 02 16:28:08 2014 -0700
committer Andreas Gampe <agampe@google.com> Tue Jul 22 08:24:14 2014 -0700
tree 36958b15842205addaf6d2a13e40823eab47c8bc
parent 84568fdf08f8f476292996ad653b4453d2894d23

Runtime can now be set to require relocation

Add a pair of runtime flags -Xrelocate and -Xnorelocate that can force
the runtime to require that all files that are run are relocated, to
prevent attacks based on the known art base address.

Add support for running patchoat on oat files compiled without an image.

Change run-test to have new --prebuild and --relocate flags.

Bug: 15358152

Change-Id: I91166c62dd1ab80e5cbcb7883a2cd0d56afca32d

oatdump/oatdump.cc

diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index b8f20f3..068a450 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -165,6 +165,8 @@
                            GetQuickToInterpreterBridgeOffset);
 #undef DUMP_OAT_HEADER_OFFSET
 
+    os << "IMAGE PATCH DELTA:\n" << oat_header.GetImagePatchDelta();
+
     os << "IMAGE FILE LOCATION OAT CHECKSUM:\n";
     os << StringPrintf("0x%08x\n\n", oat_header.GetImageFileLocationOatChecksum());
 
@@ -771,6 +773,8 @@
 
     os << "OAT FILE END:" << reinterpret_cast<void*>(image_header_.GetOatFileEnd()) << "\n\n";
 
+    os << "PATCH DELTA:" << image_header_.GetPatchDelta() << "\n\n";
+
     {
       os << "ROOTS: " << reinterpret_cast<void*>(image_header_.GetImageRoots()) << "\n";
       Indenter indent1_filter(os.rdbuf(), kIndentChar, kIndentBy1Count);
@@ -819,10 +823,13 @@
     os << "OAT LOCATION: " << oat_location;
     os << "\n";
     std::string error_msg;
-    const OatFile* oat_file = class_linker->FindOatFileFromOatLocation(oat_location, &error_msg);
-    if (oat_file == NULL) {
-      os << "NOT FOUND: " << error_msg << "\n";
-      return;
+    const OatFile* oat_file = class_linker->FindOpenedOatFileFromOatLocation(oat_location);
+    if (oat_file == nullptr) {
+      oat_file = OatFile::Open(oat_location, oat_location, NULL, false, &error_msg);
+      if (oat_file == nullptr) {
+        os << "NOT FOUND: " << error_msg << "\n";
+        return;
+      }
     }
     os << "\n";