ART: Add support for patching and loading OAT files compiled with PIC
* Images (.art) compiled with pic now have a new field added.
* isDexOptNeeded will now skip patch-ing for apps compiled PIC
* First-boot patching now only copies boot.art, boot.oat is linked
As a result, all system preopted dex files (with --compile-pic) no
longer take up any space in /data/dalvik-cache/<isa>.
Bug: 18035729
Change-Id: Ie1acad81a0fd8b2f24e1f3f07a06e6fdb548be62
diff --git a/runtime/image.h b/runtime/image.h
index 03de509..7e2b847 100644
--- a/runtime/image.h
+++ b/runtime/image.h
@@ -28,7 +28,7 @@
// header of image files written by ImageWriter, read and validated by Space.
class PACKED(4) ImageHeader {
public:
- ImageHeader() {}
+ ImageHeader() : compile_pic_(0) {}
ImageHeader(uint32_t image_begin,
uint32_t image_size_,
@@ -39,7 +39,8 @@
uint32_t oat_file_begin,
uint32_t oat_data_begin,
uint32_t oat_data_end,
- uint32_t oat_file_end);
+ uint32_t oat_file_end,
+ bool compile_pic_);
bool IsValid() const;
const char* GetMagic() const;
@@ -121,6 +122,10 @@
void RelocateImage(off_t delta);
+ bool CompilePic() const {
+ return compile_pic_ != 0;
+ }
+
private:
static const uint8_t kImageMagic[4];
static const uint8_t kImageVersion[4];
@@ -162,6 +167,9 @@
// Absolute address of an Object[] of objects needed to reinitialize from an image.
uint32_t image_roots_;
+ // Boolean (0 or 1) to denote if the image was compiled with --compile-pic option
+ const uint32_t compile_pic_;
+
friend class ImageWriter;
};