Add patchoat tool to Art.

Add a new executable called patchoat to art. This tool takes already
compiled images and oat files and changes their base address, acting as
a cheap form of relocation.

Add a --include-patch-information flag to dex2oat and code to add
required patch information to oat files created with the quick compiler.

Bug: 15358152

Change-Id: Ie0c580db45bb14ec180deb84930def6c3628d97d

1 files changed, 9 insertions, 3 deletions

diff --git a/runtime/oat_file.h b/runtime/oat_file.h
index eae0418..70253af 100644
--- a/runtime/oat_file.h
+++ b/runtime/oat_file.h
@@ -60,6 +60,12 @@ class OatFile {
 
   ~OatFile();
 
+  ElfFile* GetElfFile() const {
+    CHECK_NE(reinterpret_cast<uintptr_t>(elf_file_.get()), reinterpret_cast<uintptr_t>(nullptr))
+        << "Cannot get an elf file from " << GetLocation();
+    return elf_file_.get();
+  }
+
   const std::string& GetLocation() const {
     return location_;
   }
@@ -227,6 +233,9 @@ class OatFile {
     return End() - Begin();
   }
 
+  const byte* Begin() const;
+  const byte* End() const;
+
  private:
   static void CheckLocation(const std::string& location);
 
@@ -248,9 +257,6 @@ class OatFile {
                    std::string* error_msg);
   bool Setup(std::string* error_msg);
 
-  const byte* Begin() const;
-  const byte* End() const;
-
   // The oat file name.
   //
   // The image will embed this to link its associated oat file.