Move mirror::ArtMethod to native

Optimizing + quick tests are passing, devices boot.

TODO: Test and fix bugs in mips64.

Saves 16 bytes per most ArtMethod, 7.5MB reduction in system PSS.
Some of the savings are from removal of virtual methods and direct
methods object arrays.

Bug: 19264997

(cherry picked from commit e401d146407d61eeb99f8d6176b2ac13c4df1e33)

Change-Id: I622469a0cfa0e7082a2119f3d6a9491eb61e3f3d

Fix some ArtMethod related bugs

Added root visiting for runtime methods, not currently required
since the GcRoots in these methods are null.

Added missing GetInterfaceMethodIfProxy in GetMethodLine, fixes
--trace run-tests 005, 044.

Fixed optimizing compiler bug where we used a normal stack location
instead of double on ARM64, this fixes the debuggable tests.

TODO: Fix JDWP tests.

Bug: 19264997

Change-Id: I7c55f69c61d1b45351fd0dc7185ffe5efad82bd3

ART: Fix casts for 64-bit pointers on 32-bit compiler.

Bug: 19264997
Change-Id: Ief45cdd4bae5a43fc8bfdfa7cf744e2c57529457

Fix JDWP tests after ArtMethod change

Fixes Throwable::GetStackDepth for exception event detection after
internal stack trace representation change.

Adds missing ArtMethod::GetInterfaceMethodIfProxy call in case of
proxy method.

Bug: 19264997
Change-Id: I363e293796848c3ec491c963813f62d868da44d2

Fix accidental IMT and root marking regression

Was always using the conflict trampoline. Also included fix for
regression in GC time caused by extra roots. Most of the regression
was IMT.

Fixed bug in DumpGcPerformanceInfo where we would get SIGABRT due to
detached thread.

EvaluateAndApplyChanges:
From ~2500 -> ~1980
GC time: 8.2s -> 7.2s due to 1s less of MarkConcurrentRoots

Bug: 19264997
Change-Id: I4333e80a8268c2ed1284f87f25b9f113d4f2c7e0

Fix bogus image test assert

Previously we were comparing the size of the non moving space to
size of the image file.

Now we properly compare the size of the image space against the size
of the image file.

Bug: 19264997
Change-Id: I7359f1f73ae3df60c5147245935a24431c04808a

[MIPS64] Fix art_quick_invoke_stub argument offsets.

ArtMethod reference's size got bigger, so we need to move other args
and leave enough space for ArtMethod* and 'this' pointer.

This fixes mips64 boot.

Bug: 19264997
Change-Id: I47198d5f39a4caab30b3b77479d5eedaad5006ab

2 files changed, 130 insertions, 64 deletions

diff --git a/patchoat/patchoat.cc b/patchoat/patchoat.cc
index ef84a17..007125c 100644
--- a/patchoat/patchoat.cc
+++ b/patchoat/patchoat.cc
@@ -25,6 +25,7 @@
 #include <vector>
 
 #include "art_field-inl.h"
+#include "art_method-inl.h"
 #include "base/dumpable.h"
 #include "base/scoped_flock.h"
 #include "base/stringpiece.h"
@@ -35,8 +36,9 @@
 #include "elf_file_impl.h"
 #include "gc/space/image_space.h"
 #include "image.h"
-#include "mirror/art_method-inl.h"
+#include "mirror/abstract_method.h"
 #include "mirror/object-inl.h"
+#include "mirror/method.h"
 #include "mirror/reference.h"
 #include "noop_compiler_callbacks.h"
 #include "offsets.h"
@@ -120,7 +122,7 @@ bool PatchOat::Patch(const std::string& image_location, off_t delta,
   }
   ImageHeader image_header;
   if (sizeof(image_header) != input_image->Read(reinterpret_cast<char*>(&image_header),
-                                              sizeof(image_header), 0)) {
+                                                sizeof(image_header), 0)) {
     LOG(ERROR) << "Unable to read image header from image file " << input_image->GetPath();
     return false;
   }
@@ -416,12 +418,22 @@ bool PatchOat::ReplaceOatFileWithSymlink(const std::string& input_oat_filename,
 }
 
 void PatchOat::PatchArtFields(const ImageHeader* image_header) {
-  const size_t art_field_size = image_header->GetArtFieldsSize();
-  const size_t art_field_offset = image_header->GetArtFieldsOffset();
-  for (size_t pos = 0; pos < art_field_size; pos += sizeof(ArtField)) {
-    auto* field = reinterpret_cast<ArtField*>(heap_->Begin() + art_field_offset + pos);
-    auto* dest_field = RelocatedCopyOf(field);
-    dest_field->SetDeclaringClass(RelocatedAddressOfPointer(field->GetDeclaringClass()));
+  const auto& section = image_header->GetImageSection(ImageHeader::kSectionArtFields);
+  for (size_t pos = 0; pos < section.Size(); pos += sizeof(ArtField)) {
+    auto* src = reinterpret_cast<ArtField*>(heap_->Begin() + section.Offset() + pos);
+    auto* dest = RelocatedCopyOf(src);
+    dest->SetDeclaringClass(RelocatedAddressOfPointer(src->GetDeclaringClass()));
+  }
+}
+
+void PatchOat::PatchArtMethods(const ImageHeader* image_header) {
+  const auto& section = image_header->GetMethodsSection();
+  const size_t pointer_size = InstructionSetPointerSize(isa_);
+  size_t method_size = ArtMethod::ObjectSize(pointer_size);
+  for (size_t pos = 0; pos < section.Size(); pos += method_size) {
+    auto* src = reinterpret_cast<ArtMethod*>(heap_->Begin() + section.Offset() + pos);
+    auto* dest = RelocatedCopyOf(src);
+    FixupMethod(src, dest);
   }
 }
 
@@ -431,31 +443,35 @@ void PatchOat::PatchDexFileArrays(mirror::ObjectArray<mirror::Object>* img_roots
   for (size_t i = 0, count = dex_caches->GetLength(); i < count; ++i) {
     auto* dex_cache = dex_caches->GetWithoutChecks(i);
     auto* fields = dex_cache->GetResolvedFields();
-    if (fields == nullptr) {
-      continue;
+    if (fields != nullptr) {
+      CHECK(!fields->IsObjectArray());
+      CHECK(fields->IsArrayInstance());
+      FixupNativePointerArray(fields);
     }
-    CHECK(!fields->IsObjectArray());
-    CHECK(fields->IsArrayInstance());
-    auto* component_type = fields->GetClass()->GetComponentType();
-    if (component_type->IsPrimitiveInt()) {
-      mirror::IntArray* arr = fields->AsIntArray();
-      mirror::IntArray* copy_arr = down_cast<mirror::IntArray*>(RelocatedCopyOf(arr));
-      for (size_t j = 0, count2 = arr->GetLength(); j < count2; ++j) {
-        auto f = arr->GetWithoutChecks(j);
-        if (f != 0) {
-          copy_arr->SetWithoutChecks<false>(j, f + delta_);
-        }
-      }
-    } else {
-      CHECK(component_type->IsPrimitiveLong());
-      mirror::LongArray* arr = fields->AsLongArray();
-      mirror::LongArray* copy_arr = down_cast<mirror::LongArray*>(RelocatedCopyOf(arr));
-      for (size_t j = 0, count2 = arr->GetLength(); j < count2; ++j) {
-        auto f = arr->GetWithoutChecks(j);
-        if (f != 0) {
-          copy_arr->SetWithoutChecks<false>(j, f + delta_);
-        }
-      }
+    auto* methods = dex_cache->GetResolvedMethods();
+    if (methods != nullptr) {
+      CHECK(!methods->IsObjectArray());
+      CHECK(methods->IsArrayInstance());
+      FixupNativePointerArray(methods);
+    }
+  }
+}
+
+void PatchOat::FixupNativePointerArray(mirror::PointerArray* object) {
+  if (object->IsIntArray()) {
+    mirror::IntArray* arr = object->AsIntArray();
+    mirror::IntArray* copy_arr = down_cast<mirror::IntArray*>(RelocatedCopyOf(arr));
+    for (size_t j = 0, count2 = arr->GetLength(); j < count2; ++j) {
+      copy_arr->SetWithoutChecks<false>(
+          j, RelocatedAddressOfIntPointer(arr->GetWithoutChecks(j)));
+    }
+  } else {
+    CHECK(object->IsLongArray());
+    mirror::LongArray* arr = object->AsLongArray();
+    mirror::LongArray* copy_arr = down_cast<mirror::LongArray*>(RelocatedCopyOf(arr));
+    for (size_t j = 0, count2 = arr->GetLength(); j < count2; ++j) {
+      copy_arr->SetWithoutChecks<false>(
+          j, RelocatedAddressOfIntPointer(arr->GetWithoutChecks(j)));
     }
   }
 }
@@ -470,6 +486,9 @@ bool PatchOat::PatchImage() {
   // Patch and update ArtFields.
   PatchArtFields(image_header);
 
+  // Patch and update ArtMethods.
+  PatchArtMethods(image_header);
+
   // Patch dex file int/long arrays which point to ArtFields.
   PatchDexFileArrays(img_roots);
 
@@ -545,40 +564,63 @@ void PatchOat::VisitObject(mirror::Object* object) {
   }
   PatchOat::PatchVisitor visitor(this, copy);
   object->VisitReferences<true, kVerifyNone>(visitor, visitor);
-  if (object->IsArtMethod<kVerifyNone>()) {
-    FixupMethod(down_cast<mirror::ArtMethod*>(object), down_cast<mirror::ArtMethod*>(copy));
-  } else if (object->IsClass<kVerifyNone>()) {
-    mirror::Class* klass = down_cast<mirror::Class*>(object);
-    down_cast<mirror::Class*>(copy)->SetSFieldsUnchecked(
-        RelocatedAddressOfPointer(klass->GetSFields()));
-    down_cast<mirror::Class*>(copy)->SetIFieldsUnchecked(
-        RelocatedAddressOfPointer(klass->GetIFields()));
+  if (object->IsClass<kVerifyNone>()) {
+    auto* klass = object->AsClass();
+    auto* copy_klass = down_cast<mirror::Class*>(copy);
+    copy_klass->SetSFieldsUnchecked(RelocatedAddressOfPointer(klass->GetSFields()));
+    copy_klass->SetIFieldsUnchecked(RelocatedAddressOfPointer(klass->GetIFields()));
+    copy_klass->SetDirectMethodsPtrUnchecked(
+        RelocatedAddressOfPointer(klass->GetDirectMethodsPtr()));
+    copy_klass->SetVirtualMethodsPtr(RelocatedAddressOfPointer(klass->GetVirtualMethodsPtr()));
+    auto* vtable = klass->GetVTable();
+    if (vtable != nullptr) {
+      FixupNativePointerArray(vtable);
+    }
+    auto* iftable = klass->GetIfTable();
+    if (iftable != nullptr) {
+      for (int32_t i = 0; i < klass->GetIfTableCount(); ++i) {
+        if (iftable->GetMethodArrayCount(i) > 0) {
+          auto* method_array = iftable->GetMethodArray(i);
+          CHECK(method_array != nullptr);
+          FixupNativePointerArray(method_array);
+        }
+      }
+    }
+    if (klass->ShouldHaveEmbeddedImtAndVTable()) {
+      const size_t pointer_size = InstructionSetPointerSize(isa_);
+      for (int32_t i = 0; i < klass->GetEmbeddedVTableLength(); ++i) {
+        copy_klass->SetEmbeddedVTableEntryUnchecked(i, RelocatedAddressOfPointer(
+            klass->GetEmbeddedVTableEntry(i, pointer_size)), pointer_size);
+      }
+      for (size_t i = 0; i < mirror::Class::kImtSize; ++i) {
+        copy_klass->SetEmbeddedImTableEntry(i, RelocatedAddressOfPointer(
+            klass->GetEmbeddedImTableEntry(i, pointer_size)), pointer_size);
+      }
+    }
+  }
+  if (object->GetClass() == mirror::Method::StaticClass() ||
+      object->GetClass() == mirror::Constructor::StaticClass()) {
+    // Need to go update the ArtMethod.
+    auto* dest = down_cast<mirror::AbstractMethod*>(copy);
+    auto* src = down_cast<mirror::AbstractMethod*>(object);
+    dest->SetArtMethod(RelocatedAddressOfPointer(src->GetArtMethod()));
   }
 }
 
-void PatchOat::FixupMethod(mirror::ArtMethod* object, mirror::ArtMethod* copy) {
+void PatchOat::FixupMethod(ArtMethod* object, ArtMethod* copy) {
   const size_t pointer_size = InstructionSetPointerSize(isa_);
+  copy->CopyFrom(object, pointer_size);
   // Just update the entry points if it looks like we should.
   // TODO: sanity check all the pointers' values
-  uintptr_t quick= reinterpret_cast<uintptr_t>(
-      object->GetEntryPointFromQuickCompiledCodePtrSize<kVerifyNone>(pointer_size));
-  if (quick != 0) {
-    copy->SetEntryPointFromQuickCompiledCodePtrSize(reinterpret_cast<void*>(quick + delta_),
-                                                    pointer_size);
-  }
-  uintptr_t interpreter = reinterpret_cast<uintptr_t>(
-      object->GetEntryPointFromInterpreterPtrSize<kVerifyNone>(pointer_size));
-  if (interpreter != 0) {
-    copy->SetEntryPointFromInterpreterPtrSize(
-        reinterpret_cast<mirror::EntryPointFromInterpreter*>(interpreter + delta_), pointer_size);
-  }
-
-  uintptr_t native_method = reinterpret_cast<uintptr_t>(
-      object->GetEntryPointFromJniPtrSize(pointer_size));
-  if (native_method != 0) {
-    copy->SetEntryPointFromJniPtrSize(reinterpret_cast<void*>(native_method + delta_),
-                                      pointer_size);
-  }
+  copy->SetDeclaringClass(RelocatedAddressOfPointer(object->GetDeclaringClass()));
+  copy->SetDexCacheResolvedMethods(RelocatedAddressOfPointer(object->GetDexCacheResolvedMethods()));
+  copy->SetDexCacheResolvedTypes(RelocatedAddressOfPointer(object->GetDexCacheResolvedTypes()));
+  copy->SetEntryPointFromQuickCompiledCodePtrSize(RelocatedAddressOfPointer(
+      object->GetEntryPointFromQuickCompiledCodePtrSize(pointer_size)), pointer_size);
+  copy->SetEntryPointFromInterpreterPtrSize(RelocatedAddressOfPointer(
+      object->GetEntryPointFromInterpreterPtrSize(pointer_size)), pointer_size);
+  copy->SetEntryPointFromJniPtrSize(RelocatedAddressOfPointer(
+      object->GetEntryPointFromJniPtrSize(pointer_size)), pointer_size);
 }
 
 bool PatchOat::Patch(File* input_oat, off_t delta, File* output_oat, TimingLogger* timings,
diff --git a/patchoat/patchoat.h b/patchoat/patchoat.h
index 8f16f6b..7b9c8bd 100644
--- a/patchoat/patchoat.h
+++ b/patchoat/patchoat.h
@@ -28,14 +28,15 @@
 
 namespace art {
 
+class ArtMethod;
 class ImageHeader;
 class OatHeader;
 
 namespace mirror {
 class Object;
+class PointerArray;
 class Reference;
 class Class;
-class ArtMethod;
 }  // namespace mirror
 
 class PatchOat {
@@ -99,7 +100,9 @@ class PatchOat {
 
   void VisitObject(mirror::Object* obj)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
-  void FixupMethod(mirror::ArtMethod* object, mirror::ArtMethod* copy)
+  void FixupMethod(ArtMethod* object, ArtMethod* copy)
+      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  void FixupNativePointerArray(mirror::PointerArray* object)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   bool InHeap(mirror::Object*);
 
@@ -112,6 +115,7 @@ class PatchOat {
 
   bool PatchImage() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   void PatchArtFields(const ImageHeader* image_header) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
+  void PatchArtMethods(const ImageHeader* image_header) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
   void PatchDexFileArrays(mirror::ObjectArray<mirror::Object>* img_roots)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
@@ -133,8 +137,28 @@ class PatchOat {
 
   template <typename T>
   T* RelocatedAddressOfPointer(T* obj) {
-    return obj == nullptr ? nullptr :
-        reinterpret_cast<T*>(reinterpret_cast<uintptr_t>(obj) + delta_);
+    if (obj == nullptr) {
+      return obj;
+    }
+    auto ret = reinterpret_cast<uintptr_t>(obj) + delta_;
+    // Trim off high bits in case negative relocation with 64 bit patchoat.
+    if (InstructionSetPointerSize(isa_) == sizeof(uint32_t)) {
+      ret = static_cast<uintptr_t>(static_cast<uint32_t>(ret));
+    }
+    return reinterpret_cast<T*>(ret);
+  }
+
+  template <typename T>
+  T RelocatedAddressOfIntPointer(T obj) {
+    if (obj == 0) {
+      return obj;
+    }
+    T ret = obj + delta_;
+    // Trim off high bits in case negative relocation with 64 bit patchoat.
+    if (InstructionSetPointerSize(isa_) == 4) {
+      ret = static_cast<T>(static_cast<uint32_t>(ret));
+    }
+    return ret;
   }
 
   // Look up the oat header from any elf file.