diff --git a/compiler/common_compiler_test.h b/compiler/common_compiler_test.h
index 8bba84a..8f39212 100644
--- a/compiler/common_compiler_test.h
+++ b/compiler/common_compiler_test.h
@@ -134,9 +134,6 @@
  public:
   // Create an OatMethod based on pointers (for unit tests).
   OatFile::OatMethod CreateOatMethod(const void* code,
-                                     const size_t frame_size_in_bytes,
-                                     const uint32_t core_spill_mask,
-                                     const uint32_t fp_spill_mask,
                                      const uint8_t* gc_map) {
     CHECK(code != nullptr);
     const byte* base;
@@ -154,9 +151,6 @@
     }
     return OatFile::OatMethod(base,
                               code_offset,
-                              frame_size_in_bytes,
-                              core_spill_mask,
-                              fp_spill_mask,
                               gc_map_offset);
   }
 
@@ -179,11 +173,14 @@
         CHECK_NE(0u, code_size);
         const std::vector<uint8_t>& vmap_table = compiled_method->GetVmapTable();
         uint32_t vmap_table_offset = vmap_table.empty() ? 0u
-            : sizeof(OatMethodHeader) + vmap_table.size();
+            : sizeof(OatQuickMethodHeader) + vmap_table.size();
         const std::vector<uint8_t>& mapping_table = compiled_method->GetMappingTable();
         uint32_t mapping_table_offset = mapping_table.empty() ? 0u
-            : sizeof(OatMethodHeader) + vmap_table.size() + mapping_table.size();
-        OatMethodHeader method_header(vmap_table_offset, mapping_table_offset, code_size);
+            : sizeof(OatQuickMethodHeader) + vmap_table.size() + mapping_table.size();
+        OatQuickMethodHeader method_header(mapping_table_offset, vmap_table_offset,
+                                           compiled_method->GetFrameSizeInBytes(),
+                                           compiled_method->GetCoreSpillMask(),
+                                           compiled_method->GetFpSpillMask(), code_size);
 
         header_code_and_maps_chunks_.push_back(std::vector<uint8_t>());
         std::vector<uint8_t>* chunk = &header_code_and_maps_chunks_.back();
@@ -207,11 +204,7 @@
       const void* method_code = CompiledMethod::CodePointer(code_ptr,
                                                             compiled_method->GetInstructionSet());
       LOG(INFO) << "MakeExecutable " << PrettyMethod(method) << " code=" << method_code;
-      OatFile::OatMethod oat_method = CreateOatMethod(method_code,
-                                                      compiled_method->GetFrameSizeInBytes(),
-                                                      compiled_method->GetCoreSpillMask(),
-                                                      compiled_method->GetFpSpillMask(),
-                                                      nullptr);
+      OatFile::OatMethod oat_method = CreateOatMethod(method_code, nullptr);
       oat_method.LinkMethod(method);
       method->SetEntryPointFromInterpreter(artInterpreterToCompiledCodeBridge);
     } else {
@@ -220,28 +213,13 @@
       if (!method->IsNative()) {
         const void* method_code = kUsePortableCompiler ? GetPortableToInterpreterBridge()
                                                        : GetQuickToInterpreterBridge();
-        OatFile::OatMethod oat_method = CreateOatMethod(method_code,
-                                                        kStackAlignment,
-                                                        0,
-                                                        0,
-                                                        nullptr);
+        OatFile::OatMethod oat_method = CreateOatMethod(method_code, nullptr);
         oat_method.LinkMethod(method);
         method->SetEntryPointFromInterpreter(interpreter::artInterpreterToInterpreterBridge);
       } else {
         const void* method_code = GetQuickGenericJniTrampoline();
-        mirror::ArtMethod* callee_save_method = runtime_->GetCalleeSaveMethod(Runtime::kRefsAndArgs);
 
-        // Compute Sirt size, as Sirt goes into frame
-        MethodHelper mh(method);
-        uint32_t sirt_refs = mh.GetNumberOfReferenceArgsWithoutReceiver() + 1;
-        uint32_t sirt_size = StackIndirectReferenceTable::SizeOf(sirt_refs);
-
-        OatFile::OatMethod oat_method = CreateOatMethod(method_code,
-                                                        callee_save_method->GetFrameSizeInBytes() +
-                                                            sirt_size,
-                                                        callee_save_method->GetCoreSpillMask(),
-                                                        callee_save_method->GetFpSpillMask(),
-                                                        nullptr);
+        OatFile::OatMethod oat_method = CreateOatMethod(method_code, nullptr);
         oat_method.LinkMethod(method);
         method->SetEntryPointFromInterpreter(artInterpreterToCompiledCodeBridge);
       }
@@ -323,11 +301,12 @@
       compiler_options_->SetCompilerFilter(CompilerOptions::kInterpretOnly);
 #endif
 
+      runtime_->SetInstructionSet(instruction_set);
       for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
         Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i);
         if (!runtime_->HasCalleeSaveMethod(type)) {
           runtime_->SetCalleeSaveMethod(
-              runtime_->CreateCalleeSaveMethod(instruction_set, type), type);
+              runtime_->CreateCalleeSaveMethod(type), type);
         }
       }
 
diff --git a/compiler/jni/quick/x86_64/calling_convention_x86_64.cc b/compiler/jni/quick/x86_64/calling_convention_x86_64.cc
index 4dfa29a..52490e6 100644
--- a/compiler/jni/quick/x86_64/calling_convention_x86_64.cc
+++ b/compiler/jni/quick/x86_64/calling_convention_x86_64.cc
@@ -133,7 +133,7 @@
 }
 
 uint32_t X86_64JniCallingConvention::CoreSpillMask() const {
-  return 1 << RBX | 1 << RBP | 1 << R12 | 1 << R13 | 1 << R14 | 1 << R15 | 1 << R13 |
+  return 1 << RBX | 1 << RBP | 1 << R12 | 1 << R13 | 1 << R14 | 1 << R15 |
       1 << kNumberOfCpuRegisters;
 }
 
diff --git a/compiler/oat_test.cc b/compiler/oat_test.cc
index b5d3923..66972cb 100644
--- a/compiler/oat_test.cc
+++ b/compiler/oat_test.cc
@@ -17,11 +17,12 @@
 #include "common_compiler_test.h"
 #include "compiler/compiler.h"
 #include "compiler/oat_writer.h"
+#include "entrypoints/quick/quick_entrypoints.h"
 #include "mirror/art_method-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/object-inl.h"
 #include "mirror/object_array-inl.h"
-#include "oat_file.h"
+#include "oat_file-inl.h"
 #include "vector_output_stream.h"
 
 namespace art {
@@ -176,8 +177,9 @@
   // If this test is failing and you have to update these constants,
   // it is time to update OatHeader::kOatVersion
   EXPECT_EQ(80U, sizeof(OatHeader));
-  EXPECT_EQ(20U, sizeof(OatMethodOffsets));
-  EXPECT_EQ(12U, sizeof(OatMethodHeader));
+  EXPECT_EQ(8U, sizeof(OatMethodOffsets));
+  EXPECT_EQ(24U, sizeof(OatQuickMethodHeader));
+  EXPECT_EQ(320U, sizeof(QuickEntryPoints));
 }
 
 TEST_F(OatTest, OatHeaderIsValid) {
diff --git a/compiler/oat_writer.cc b/compiler/oat_writer.cc
index bbc9c3e..39311d9 100644
--- a/compiler/oat_writer.cc
+++ b/compiler/oat_writer.cc
@@ -331,9 +331,6 @@
     if (compiled_method != nullptr) {
       // Derived from CompiledMethod.
       uint32_t quick_code_offset = 0;
-      uint32_t frame_size_in_bytes = kStackAlignment;
-      uint32_t core_spill_mask = 0;
-      uint32_t fp_spill_mask = 0;
 
       const std::vector<uint8_t>* portable_code = compiled_method->GetPortableCode();
       const std::vector<uint8_t>* quick_code = compiled_method->GetQuickCode();
@@ -351,7 +348,7 @@
         uint32_t code_size = quick_code->size() * sizeof(uint8_t);
         CHECK_NE(code_size, 0U);
         uint32_t thumb_offset = compiled_method->CodeDelta();
-        quick_code_offset = offset_ + sizeof(OatMethodHeader) + thumb_offset;
+        quick_code_offset = offset_ + sizeof(OatQuickMethodHeader) + thumb_offset;
 
         std::vector<uint8_t>* cfi_info = writer_->compiler_driver_->GetCallFrameInformation();
         if (cfi_info != nullptr) {
@@ -374,27 +371,45 @@
           }
         }
 
-        DCHECK_LT(method_offsets_index_, oat_class->method_headers_.size());
-        OatMethodHeader* method_header = &oat_class->method_headers_[method_offsets_index_];
-        method_header->code_size_ = code_size;
-
         // Deduplicate code arrays.
         auto code_iter = dedupe_map_.find(compiled_method);
         if (code_iter != dedupe_map_.end()) {
           quick_code_offset = code_iter->second;
-          FixupMethodHeader(method_header, quick_code_offset - thumb_offset);
         } else {
           dedupe_map_.Put(compiled_method, quick_code_offset);
-          FixupMethodHeader(method_header, quick_code_offset - thumb_offset);
+        }
+
+        // Update quick method header.
+        DCHECK_LT(method_offsets_index_, oat_class->method_headers_.size());
+        OatQuickMethodHeader* method_header = &oat_class->method_headers_[method_offsets_index_];
+        uint32_t mapping_table_offset = method_header->mapping_table_offset_;
+        uint32_t vmap_table_offset = method_header->vmap_table_offset_;
+        // The code offset was 0 when the mapping/vmap table offset was set, so it's set
+        // to 0-offset and we need to adjust it by code_offset.
+        uint32_t code_offset = quick_code_offset - thumb_offset;
+        if (mapping_table_offset != 0u) {
+          mapping_table_offset += code_offset;
+          DCHECK_LT(mapping_table_offset, code_offset);
+        }
+        if (vmap_table_offset != 0u) {
+          vmap_table_offset += code_offset;
+          DCHECK_LT(vmap_table_offset, code_offset);
+        }
+        uint32_t frame_size_in_bytes = compiled_method->GetFrameSizeInBytes();
+        uint32_t core_spill_mask = compiled_method->GetCoreSpillMask();
+        uint32_t fp_spill_mask = compiled_method->GetFpSpillMask();
+        *method_header = OatQuickMethodHeader(mapping_table_offset, vmap_table_offset,
+                                              frame_size_in_bytes, core_spill_mask, fp_spill_mask,
+                                              code_size);
+
+        // Update checksum if this wasn't a duplicate.
+        if (code_iter == dedupe_map_.end()) {
           writer_->oat_header_->UpdateChecksum(method_header, sizeof(*method_header));
           offset_ += sizeof(*method_header);  // Method header is prepended before code.
           writer_->oat_header_->UpdateChecksum(&(*quick_code)[0], code_size);
           offset_ += code_size;
         }
       }
-      frame_size_in_bytes = compiled_method->GetFrameSizeInBytes();
-      core_spill_mask = compiled_method->GetCoreSpillMask();
-      fp_spill_mask = compiled_method->GetFpSpillMask();
 
       if (kIsDebugBuild) {
         // We expect GC maps except when the class hasn't been verified or the method is native.
@@ -421,9 +436,6 @@
       DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size());
       OatMethodOffsets* offsets = &oat_class->method_offsets_[method_offsets_index_];
       offsets->code_offset_ = quick_code_offset;
-      offsets->frame_size_in_bytes_ = frame_size_in_bytes;
-      offsets->core_spill_mask_ = core_spill_mask;
-      offsets->fp_spill_mask_ = fp_spill_mask;
       ++method_offsets_index_;
     }
 
@@ -431,19 +443,6 @@
   }
 
  private:
-  static void FixupMethodHeader(OatMethodHeader* method_header, uint32_t code_offset) {
-    // The code offset was 0 when the mapping/vmap table offset was set, so it's set
-    // to 0-offset and we need to adjust it by code_offset.
-    if (method_header->mapping_table_offset_ != 0u) {
-      method_header->mapping_table_offset_ += code_offset;
-      DCHECK_LT(method_header->mapping_table_offset_, code_offset);
-    }
-    if (method_header->vmap_table_offset_ != 0u) {
-      method_header->vmap_table_offset_ += code_offset;
-      DCHECK_LT(method_header->vmap_table_offset_, code_offset);
-    }
-  }
-
   // Deduplication is already done on a pointer basis by the compiler driver,
   // so we can simply compare the pointers to find out if things are duplicated.
   SafeMap<const CompiledMethod*, uint32_t, CodeOffsetsKeyComparator> dedupe_map_;
@@ -501,55 +500,22 @@
     OatClass* oat_class = writer_->oat_classes_[oat_class_index_];
     CompiledMethod* compiled_method = oat_class->GetCompiledMethod(class_def_method_index);
 
-    OatMethodOffsets offsets(0u, kStackAlignment, 0u, 0u, 0u);
+    OatMethodOffsets offsets(0u, 0u);
     if (compiled_method != nullptr) {
       DCHECK_LT(method_offsets_index_, oat_class->method_offsets_.size());
       offsets = oat_class->method_offsets_[method_offsets_index_];
       ++method_offsets_index_;
     }
 
-    // Derive frame size and spill masks for native methods without code:
-    // These are generic JNI methods...
-    uint32_t method_idx = it.GetMemberIndex();
-    bool is_native = (it.GetMemberAccessFlags() & kAccNative) != 0;
-    if (is_native && compiled_method == nullptr) {
-      // Compute Sirt size as putting _every_ reference into it, even null ones.
-      uint32_t s_len;
-      const char* shorty = dex_file_->GetMethodShorty(dex_file_->GetMethodId(method_idx),
-                                                      &s_len);
-      DCHECK(shorty != nullptr);
-      uint32_t refs = 1;    // Native method always has "this" or class.
-      for (uint32_t i = 1; i < s_len; ++i) {
-        if (shorty[i] == 'L') {
-          refs++;
-        }
-      }
-      size_t pointer_size = GetInstructionSetPointerSize(
-          writer_->compiler_driver_->GetInstructionSet());
-      size_t sirt_size = StackIndirectReferenceTable::GetAlignedSirtSizeTarget(pointer_size, refs);
-
-      // Get the generic spill masks and base frame size.
-      mirror::ArtMethod* callee_save_method =
-          Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs);
-
-      offsets.frame_size_in_bytes_ = callee_save_method->GetFrameSizeInBytes() + sirt_size;
-      offsets.core_spill_mask_ = callee_save_method->GetCoreSpillMask();
-      offsets.fp_spill_mask_ = callee_save_method->GetFpSpillMask();
-      DCHECK_EQ(offsets.gc_map_offset_, 0u);
-    }
-
     ClassLinker* linker = Runtime::Current()->GetClassLinker();
     InvokeType invoke_type = it.GetMethodInvokeType(dex_file_->GetClassDef(class_def_index_));
     // Unchecked as we hold mutator_lock_ on entry.
     ScopedObjectAccessUnchecked soa(Thread::Current());
     SirtRef<mirror::DexCache> dex_cache(soa.Self(), linker->FindDexCache(*dex_file_));
     SirtRef<mirror::ClassLoader> class_loader(soa.Self(), nullptr);
-    mirror::ArtMethod* method = linker->ResolveMethod(*dex_file_, method_idx, dex_cache,
+    mirror::ArtMethod* method = linker->ResolveMethod(*dex_file_, it.GetMemberIndex(), dex_cache,
                                                       class_loader, nullptr, invoke_type);
     CHECK(method != NULL);
-    method->SetFrameSizeInBytes(offsets.frame_size_in_bytes_);
-    method->SetCoreSpillMask(offsets.core_spill_mask_);
-    method->SetFpSpillMask(offsets.fp_spill_mask_);
     // Portable code offsets are set by ElfWriterMclinker::FixupCompiledCodeOffset after linking.
     method->SetQuickOatCodeOffset(offsets.code_offset_);
     method->SetOatNativeGcMapOffset(offsets.gc_map_offset_);
@@ -601,10 +567,10 @@
         // Deduplicate code arrays.
         const OatMethodOffsets& method_offsets = oat_class->method_offsets_[method_offsets_index_];
         DCHECK(method_offsets.code_offset_ < offset_ || method_offsets.code_offset_ ==
-                   offset_ + sizeof(OatMethodHeader) + compiled_method->CodeDelta())
+                   offset_ + sizeof(OatQuickMethodHeader) + compiled_method->CodeDelta())
             << PrettyMethod(it.GetMemberIndex(), *dex_file_);
         if (method_offsets.code_offset_ >= offset_) {
-          const OatMethodHeader& method_header = oat_class->method_headers_[method_offsets_index_];
+          const OatQuickMethodHeader& method_header = oat_class->method_headers_[method_offsets_index_];
           if (!out->WriteFully(&method_header, sizeof(method_header))) {
             ReportWriteFailure("method header", it);
             return false;
diff --git a/compiler/oat_writer.h b/compiler/oat_writer.h
index 7cdd532..85c9b47 100644
--- a/compiler/oat_writer.h
+++ b/compiler/oat_writer.h
@@ -231,7 +231,7 @@
     // oat_method_offsets_offsets_from_oat_class_ should contain 0
     // values in this case).
     std::vector<OatMethodOffsets> method_offsets_;
-    std::vector<OatMethodHeader> method_headers_;
+    std::vector<OatQuickMethodHeader> method_headers_;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(OatClass);
diff --git a/dex2oat/dex2oat.cc b/dex2oat/dex2oat.cc
index 3529c27..c2af767 100644
--- a/dex2oat/dex2oat.cc
+++ b/dex2oat/dex2oat.cc
@@ -444,10 +444,11 @@
       return false;
     }
     Runtime* runtime = Runtime::Current();
+    runtime->SetInstructionSet(instruction_set);
     for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
       Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i);
       if (!runtime->HasCalleeSaveMethod(type)) {
-        runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(instruction_set, type), type);
+        runtime->SetCalleeSaveMethod(runtime->CreateCalleeSaveMethod(type), type);
       }
     }
     runtime->GetClassLinker()->FixupDexCaches(runtime->GetResolutionMethod());
diff --git a/runtime/arch/arch_test.cc b/runtime/arch/arch_test.cc
index c285088..b957d58 100644
--- a/runtime/arch/arch_test.cc
+++ b/runtime/arch/arch_test.cc
@@ -18,6 +18,7 @@
 
 #include "common_runtime_test.h"
 #include "mirror/art_method.h"
+#include "quick/quick_method_frame_info.h"
 
 namespace art {
 
@@ -30,10 +31,13 @@
     Thread* t = Thread::Current();
     t->TransitionFromSuspendedToRunnable();  // So we can create callee-save methods.
 
-    mirror::ArtMethod* save_method = r->CreateCalleeSaveMethod(isa, type);
-    EXPECT_EQ(save_method->GetFrameSizeInBytes(), save_size) << "Expected and real size differs for "
-        << type << " core spills=" << std::hex << save_method->GetCoreSpillMask() << " fp spills="
-        << save_method->GetFpSpillMask() << std::dec;
+    r->SetInstructionSet(isa);
+    mirror::ArtMethod* save_method = r->CreateCalleeSaveMethod(type);
+    r->SetCalleeSaveMethod(save_method, type);
+    QuickMethodFrameInfo frame_info = save_method->GetQuickFrameInfo();
+    EXPECT_EQ(frame_info.FrameSizeInBytes(), save_size) << "Expected and real size differs for "
+        << type << " core spills=" << std::hex << frame_info.CoreSpillMask() << " fp spills="
+        << frame_info.FpSpillMask() << std::dec;
 
     t->TransitionFromRunnableToSuspended(ThreadState::kNative);  // So we can shut down.
   }
diff --git a/runtime/arch/arm/context_arm.cc b/runtime/arch/arm/context_arm.cc
index 0e1b25e..6a337b3 100644
--- a/runtime/arch/arm/context_arm.cc
+++ b/runtime/arch/arm/context_arm.cc
@@ -16,8 +16,9 @@
 
 #include "context_arm.h"
 
-#include "mirror/art_method.h"
+#include "mirror/art_method-inl.h"
 #include "mirror/object-inl.h"
+#include "quick/quick_method_frame_info.h"
 #include "stack.h"
 #include "thread.h"
 
@@ -42,17 +43,15 @@
 
 void ArmContext::FillCalleeSaves(const StackVisitor& fr) {
   mirror::ArtMethod* method = fr.GetMethod();
-  uint32_t core_spills = method->GetCoreSpillMask();
-  uint32_t fp_core_spills = method->GetFpSpillMask();
-  size_t spill_count = POPCOUNT(core_spills);
-  size_t fp_spill_count = POPCOUNT(fp_core_spills);
-  size_t frame_size = method->GetFrameSizeInBytes();
+  const QuickMethodFrameInfo frame_info = method->GetQuickFrameInfo();
+  size_t spill_count = POPCOUNT(frame_info.CoreSpillMask());
+  size_t fp_spill_count = POPCOUNT(frame_info.FpSpillMask());
   if (spill_count > 0) {
     // Lowest number spill is farthest away, walk registers and fill into context
     int j = 1;
     for (size_t i = 0; i < kNumberOfCoreRegisters; i++) {
-      if (((core_spills >> i) & 1) != 0) {
-        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_size);
+      if (((frame_info.CoreSpillMask() >> i) & 1) != 0) {
+        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_info.FrameSizeInBytes());
         j++;
       }
     }
@@ -61,8 +60,9 @@
     // Lowest number spill is farthest away, walk registers and fill into context
     int j = 1;
     for (size_t i = 0; i < kNumberOfSRegisters; i++) {
-      if (((fp_core_spills >> i) & 1) != 0) {
-        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j, frame_size);
+      if (((frame_info.FpSpillMask() >> i) & 1) != 0) {
+        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j,
+                                        frame_info.FrameSizeInBytes());
         j++;
       }
     }
diff --git a/runtime/arch/arm/quick_method_frame_info_arm.h b/runtime/arch/arm/quick_method_frame_info_arm.h
new file mode 100644
index 0000000..8d08190
--- /dev/null
+++ b/runtime/arch/arm/quick_method_frame_info_arm.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
+#define ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
+
+#include "quick/quick_method_frame_info.h"
+#include "registers_arm.h"
+#include "runtime.h"  // for Runtime::CalleeSaveType.
+
+namespace art {
+namespace arm {
+
+static constexpr uint32_t kArmCalleeSaveRefSpills =
+    (1 << art::arm::R5) | (1 << art::arm::R6)  | (1 << art::arm::R7) | (1 << art::arm::R8) |
+    (1 << art::arm::R10) | (1 << art::arm::R11);
+static constexpr uint32_t kArmCalleeSaveArgSpills =
+    (1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3);
+static constexpr uint32_t kArmCalleeSaveAllSpills =
+    (1 << art::arm::R4) | (1 << art::arm::R9);
+static constexpr uint32_t kArmCalleeSaveFpAllSpills =
+    (1 << art::arm::S0)  | (1 << art::arm::S1)  | (1 << art::arm::S2)  | (1 << art::arm::S3)  |
+    (1 << art::arm::S4)  | (1 << art::arm::S5)  | (1 << art::arm::S6)  | (1 << art::arm::S7)  |
+    (1 << art::arm::S8)  | (1 << art::arm::S9)  | (1 << art::arm::S10) | (1 << art::arm::S11) |
+    (1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) | (1 << art::arm::S15) |
+    (1 << art::arm::S16) | (1 << art::arm::S17) | (1 << art::arm::S18) | (1 << art::arm::S19) |
+    (1 << art::arm::S20) | (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) |
+    (1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) | (1 << art::arm::S27) |
+    (1 << art::arm::S28) | (1 << art::arm::S29) | (1 << art::arm::S30) | (1 << art::arm::S31);
+
+constexpr uint32_t ArmCalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
+  return kArmCalleeSaveRefSpills | (type == Runtime::kRefsAndArgs ? kArmCalleeSaveArgSpills : 0) |
+      (type == Runtime::kSaveAll ? kArmCalleeSaveAllSpills : 0) | (1 << art::arm::LR);
+}
+
+constexpr uint32_t ArmCalleeSaveFpSpills(Runtime::CalleeSaveType type) {
+  return type == Runtime::kSaveAll ? kArmCalleeSaveFpAllSpills : 0;
+}
+
+constexpr uint32_t ArmCalleeSaveFrameSize(Runtime::CalleeSaveType type) {
+  return RoundUp((POPCOUNT(ArmCalleeSaveCoreSpills(type)) /* gprs */ +
+                  POPCOUNT(ArmCalleeSaveFpSpills(type)) /* fprs */ +
+                  1 /* Method* */) * kArmPointerSize, kStackAlignment);
+}
+
+constexpr QuickMethodFrameInfo ArmCalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
+  return QuickMethodFrameInfo(ArmCalleeSaveFrameSize(type),
+                              ArmCalleeSaveCoreSpills(type),
+                              ArmCalleeSaveFpSpills(type));
+}
+
+}  // namespace arm
+}  // namespace art
+
+#endif  // ART_RUNTIME_ARCH_ARM_QUICK_METHOD_FRAME_INFO_ARM_H_
diff --git a/runtime/arch/arm64/context_arm64.cc b/runtime/arch/arm64/context_arm64.cc
index 0890fa9..fae44af 100644
--- a/runtime/arch/arm64/context_arm64.cc
+++ b/runtime/arch/arm64/context_arm64.cc
@@ -18,8 +18,9 @@
 
 #include "context_arm64.h"
 
-#include "mirror/art_method.h"
+#include "mirror/art_method-inl.h"
 #include "mirror/object-inl.h"
+#include "quick/quick_method_frame_info.h"
 #include "stack.h"
 #include "thread.h"
 
@@ -45,18 +46,15 @@
 
 void Arm64Context::FillCalleeSaves(const StackVisitor& fr) {
   mirror::ArtMethod* method = fr.GetMethod();
-  uint32_t core_spills = method->GetCoreSpillMask();
-  uint32_t fp_core_spills = method->GetFpSpillMask();
-  size_t spill_count = POPCOUNT(core_spills);
-  size_t fp_spill_count = POPCOUNT(fp_core_spills);
-  size_t frame_size = method->GetFrameSizeInBytes();
-
+  const QuickMethodFrameInfo frame_info = method->GetQuickFrameInfo();
+  size_t spill_count = POPCOUNT(frame_info.CoreSpillMask());
+  size_t fp_spill_count = POPCOUNT(frame_info.FpSpillMask());
   if (spill_count > 0) {
     // Lowest number spill is farthest away, walk registers and fill into context.
     int j = 1;
     for (size_t i = 0; i < kNumberOfCoreRegisters; i++) {
-      if (((core_spills >> i) & 1) != 0) {
-        gprs_[i] = fr.CalleeSaveAddress(spill_count  - j, frame_size);
+      if (((frame_info.CoreSpillMask() >> i) & 1) != 0) {
+        gprs_[i] = fr.CalleeSaveAddress(spill_count  - j, frame_info.FrameSizeInBytes());
         j++;
       }
     }
@@ -66,8 +64,9 @@
     // Lowest number spill is farthest away, walk registers and fill into context.
     int j = 1;
     for (size_t i = 0; i < kNumberOfDRegisters; i++) {
-      if (((fp_core_spills >> i) & 1) != 0) {
-        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j, frame_size);
+      if (((frame_info.FpSpillMask() >> i) & 1) != 0) {
+        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j,
+                                        frame_info.FrameSizeInBytes());
         j++;
       }
     }
diff --git a/runtime/arch/arm64/quick_method_frame_info_arm64.h b/runtime/arch/arm64/quick_method_frame_info_arm64.h
new file mode 100644
index 0000000..cb830ac
--- /dev/null
+++ b/runtime/arch/arm64/quick_method_frame_info_arm64.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_
+#define ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_
+
+#include "quick/quick_method_frame_info.h"
+#include "registers_arm64.h"
+#include "runtime.h"  // for Runtime::CalleeSaveType.
+
+namespace art {
+namespace arm64 {
+
+// Callee saved registers
+static constexpr uint32_t kArm64CalleeSaveRefSpills =
+    (1 << art::arm64::X19) | (1 << art::arm64::X20) | (1 << art::arm64::X21) |
+    (1 << art::arm64::X22) | (1 << art::arm64::X23) | (1 << art::arm64::X24) |
+    (1 << art::arm64::X25) | (1 << art::arm64::X26) | (1 << art::arm64::X27) |
+    (1 << art::arm64::X28);
+// X0 is the method pointer. Not saved.
+static constexpr uint32_t kArm64CalleeSaveArgSpills =
+    (1 << art::arm64::X1) | (1 << art::arm64::X2) | (1 << art::arm64::X3) |
+    (1 << art::arm64::X4) | (1 << art::arm64::X5) | (1 << art::arm64::X6) |
+    (1 << art::arm64::X7);
+// TODO  This is conservative. Only ALL should include the thread register.
+// The thread register is not preserved by the aapcs64.
+// LR is always saved.
+static constexpr uint32_t kArm64CalleeSaveAllSpills =  0;  // (1 << art::arm64::LR);
+
+// Save callee-saved floating point registers. Rest are scratch/parameters.
+static constexpr uint32_t kArm64CalleeSaveFpArgSpills =
+    (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) |
+    (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) |
+    (1 << art::arm64::D6) | (1 << art::arm64::D7);
+static constexpr uint32_t kArm64CalleeSaveFpRefSpills =
+    (1 << art::arm64::D8)  | (1 << art::arm64::D9)  | (1 << art::arm64::D10) |
+    (1 << art::arm64::D11)  | (1 << art::arm64::D12)  | (1 << art::arm64::D13) |
+    (1 << art::arm64::D14)  | (1 << art::arm64::D15);
+static constexpr uint32_t kArm64FpAllSpills =
+    kArm64CalleeSaveFpArgSpills |
+    (1 << art::arm64::D16)  | (1 << art::arm64::D17) | (1 << art::arm64::D18) |
+    (1 << art::arm64::D19)  | (1 << art::arm64::D20) | (1 << art::arm64::D21) |
+    (1 << art::arm64::D22)  | (1 << art::arm64::D23) | (1 << art::arm64::D24) |
+    (1 << art::arm64::D25)  | (1 << art::arm64::D26) | (1 << art::arm64::D27) |
+    (1 << art::arm64::D28)  | (1 << art::arm64::D29) | (1 << art::arm64::D30) |
+    (1 << art::arm64::D31);
+
+constexpr uint32_t Arm64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
+  return kArm64CalleeSaveRefSpills |
+      (type == Runtime::kRefsAndArgs ? kArm64CalleeSaveArgSpills : 0) |
+      (type == Runtime::kSaveAll ? kArm64CalleeSaveAllSpills : 0) | (1 << art::arm64::FP) |
+      (1 << art::arm64::X18) | (1 << art::arm64::LR);
+}
+
+constexpr uint32_t Arm64CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
+  return kArm64CalleeSaveFpRefSpills |
+      (type == Runtime::kRefsAndArgs ? kArm64CalleeSaveFpArgSpills: 0) |
+      (type == Runtime::kSaveAll ? kArm64FpAllSpills : 0);
+}
+
+constexpr uint32_t Arm64CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
+  return RoundUp((POPCOUNT(Arm64CalleeSaveCoreSpills(type)) /* gprs */ +
+                  POPCOUNT(Arm64CalleeSaveFpSpills(type)) /* fprs */ +
+                  1 /* Method* */) * kArm64PointerSize, kStackAlignment);
+}
+
+constexpr QuickMethodFrameInfo Arm64CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
+  return QuickMethodFrameInfo(Arm64CalleeSaveFrameSize(type),
+                              Arm64CalleeSaveCoreSpills(type),
+                              Arm64CalleeSaveFpSpills(type));
+}
+
+}  // namespace arm64
+}  // namespace art
+
+#endif  // ART_RUNTIME_ARCH_ARM64_QUICK_METHOD_FRAME_INFO_ARM64_H_
diff --git a/runtime/arch/mips/context_mips.cc b/runtime/arch/mips/context_mips.cc
index 0950e71..ad28891 100644
--- a/runtime/arch/mips/context_mips.cc
+++ b/runtime/arch/mips/context_mips.cc
@@ -16,8 +16,9 @@
 
 #include "context_mips.h"
 
-#include "mirror/art_method.h"
+#include "mirror/art_method-inl.h"
 #include "mirror/object-inl.h"
+#include "quick/quick_method_frame_info.h"
 #include "stack.h"
 
 namespace art {
@@ -41,17 +42,15 @@
 
 void MipsContext::FillCalleeSaves(const StackVisitor& fr) {
   mirror::ArtMethod* method = fr.GetMethod();
-  uint32_t core_spills = method->GetCoreSpillMask();
-  uint32_t fp_core_spills = method->GetFpSpillMask();
-  size_t spill_count = POPCOUNT(core_spills);
-  size_t fp_spill_count = POPCOUNT(fp_core_spills);
-  size_t frame_size = method->GetFrameSizeInBytes();
+  const QuickMethodFrameInfo frame_info = method->GetQuickFrameInfo();
+  size_t spill_count = POPCOUNT(frame_info.CoreSpillMask());
+  size_t fp_spill_count = POPCOUNT(frame_info.FpSpillMask());
   if (spill_count > 0) {
     // Lowest number spill is farthest away, walk registers and fill into context.
     int j = 1;
     for (size_t i = 0; i < kNumberOfCoreRegisters; i++) {
-      if (((core_spills >> i) & 1) != 0) {
-        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_size);
+      if (((frame_info.CoreSpillMask() >> i) & 1) != 0) {
+        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_info.FrameSizeInBytes());
         j++;
       }
     }
@@ -60,8 +59,9 @@
     // Lowest number spill is farthest away, walk registers and fill into context.
     int j = 1;
     for (size_t i = 0; i < kNumberOfFRegisters; i++) {
-      if (((fp_core_spills >> i) & 1) != 0) {
-        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j, frame_size);
+      if (((frame_info.FpSpillMask() >> i) & 1) != 0) {
+        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j,
+                                        frame_info.FrameSizeInBytes());
         j++;
       }
     }
diff --git a/runtime/arch/mips/quick_method_frame_info_mips.h b/runtime/arch/mips/quick_method_frame_info_mips.h
new file mode 100644
index 0000000..2a8bcf0
--- /dev/null
+++ b/runtime/arch/mips/quick_method_frame_info_mips.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_ARCH_MIPS_QUICK_METHOD_FRAME_INFO_MIPS_H_
+#define ART_RUNTIME_ARCH_MIPS_QUICK_METHOD_FRAME_INFO_MIPS_H_
+
+#include "quick/quick_method_frame_info.h"
+#include "registers_mips.h"
+#include "runtime.h"  // for Runtime::CalleeSaveType.
+
+namespace art {
+namespace mips {
+
+static constexpr uint32_t kMipsCalleeSaveRefSpills =
+    (1 << art::mips::S2) | (1 << art::mips::S3) | (1 << art::mips::S4) | (1 << art::mips::S5) |
+    (1 << art::mips::S6) | (1 << art::mips::S7) | (1 << art::mips::GP) | (1 << art::mips::FP);
+static constexpr uint32_t kMipsCalleeSaveArgSpills =
+    (1 << art::mips::A1) | (1 << art::mips::A2) | (1 << art::mips::A3);
+static constexpr uint32_t kMipsCalleeSaveAllSpills =
+    (1 << art::mips::S0) | (1 << art::mips::S1);
+
+constexpr uint32_t MipsCalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
+  return kMipsCalleeSaveRefSpills |
+      (type == Runtime::kRefsAndArgs ? kMipsCalleeSaveArgSpills : 0) |
+      (type == Runtime::kSaveAll ? kMipsCalleeSaveAllSpills : 0) | (1 << art::mips::RA);
+}
+
+constexpr uint32_t MipsCalleeSaveFrameSize(Runtime::CalleeSaveType type) {
+  return RoundUp((POPCOUNT(MipsCalleeSaveCoreSpills(type)) /* gprs */ +
+                  (type == Runtime::kRefsAndArgs ? 0 : 3) + 1 /* Method* */) *
+                 kMipsPointerSize, kStackAlignment);
+}
+
+constexpr QuickMethodFrameInfo MipsCalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
+  return QuickMethodFrameInfo(MipsCalleeSaveFrameSize(type),
+                              MipsCalleeSaveCoreSpills(type),
+                              0u);
+}
+
+}  // namespace mips
+}  // namespace art
+
+#endif  // ART_RUNTIME_ARCH_MIPS_QUICK_METHOD_FRAME_INFO_MIPS_H_
diff --git a/runtime/arch/stub_test.cc b/runtime/arch/stub_test.cc
index 1d05540..5e8edf0 100644
--- a/runtime/arch/stub_test.cc
+++ b/runtime/arch/stub_test.cc
@@ -33,10 +33,11 @@
     {
       // Create callee-save methods
       ScopedObjectAccess soa(Thread::Current());
+      runtime_->SetInstructionSet(kRuntimeISA);
       for (int i = 0; i < Runtime::kLastCalleeSaveType; i++) {
         Runtime::CalleeSaveType type = Runtime::CalleeSaveType(i);
         if (!runtime_->HasCalleeSaveMethod(type)) {
-          runtime_->SetCalleeSaveMethod(runtime_->CreateCalleeSaveMethod(kRuntimeISA, type), type);
+          runtime_->SetCalleeSaveMethod(runtime_->CreateCalleeSaveMethod(type), type);
         }
       }
     }
diff --git a/runtime/arch/x86/context_x86.cc b/runtime/arch/x86/context_x86.cc
index c68d76a..8c98d91 100644
--- a/runtime/arch/x86/context_x86.cc
+++ b/runtime/arch/x86/context_x86.cc
@@ -16,8 +16,9 @@
 
 #include "context_x86.h"
 
-#include "mirror/art_method.h"
+#include "mirror/art_method-inl.h"
 #include "mirror/object-inl.h"
+#include "quick/quick_method_frame_info.h"
 #include "stack.h"
 
 namespace art {
@@ -37,16 +38,15 @@
 
 void X86Context::FillCalleeSaves(const StackVisitor& fr) {
   mirror::ArtMethod* method = fr.GetMethod();
-  uint32_t core_spills = method->GetCoreSpillMask();
-  size_t spill_count = POPCOUNT(core_spills);
-  DCHECK_EQ(method->GetFpSpillMask(), 0u);
-  size_t frame_size = method->GetFrameSizeInBytes();
+  const QuickMethodFrameInfo frame_info = method->GetQuickFrameInfo();
+  size_t spill_count = POPCOUNT(frame_info.CoreSpillMask());
+  DCHECK_EQ(frame_info.FpSpillMask(), 0u);
   if (spill_count > 0) {
     // Lowest number spill is farthest away, walk registers and fill into context.
     int j = 2;  // Offset j to skip return address spill.
     for (int i = 0; i < kNumberOfCpuRegisters; i++) {
-      if (((core_spills >> i) & 1) != 0) {
-        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_size);
+      if (((frame_info.CoreSpillMask() >> i) & 1) != 0) {
+        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_info.FrameSizeInBytes());
         j++;
       }
     }
diff --git a/runtime/arch/x86/quick_method_frame_info_x86.h b/runtime/arch/x86/quick_method_frame_info_x86.h
new file mode 100644
index 0000000..b9dc0d8
--- /dev/null
+++ b/runtime/arch/x86/quick_method_frame_info_x86.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
+#define ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
+
+#include "quick/quick_method_frame_info.h"
+#include "registers_x86.h"
+#include "runtime.h"  // for Runtime::CalleeSaveType.
+
+namespace art {
+namespace x86 {
+
+static constexpr uint32_t kX86CalleeSaveRefSpills =
+    (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
+static constexpr uint32_t kX86CalleeSaveArgSpills =
+    (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
+
+constexpr uint32_t X86CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
+  return kX86CalleeSaveRefSpills | (type == Runtime::kRefsAndArgs ? kX86CalleeSaveArgSpills : 0) |
+      (1 << art::x86::kNumberOfCpuRegisters);  // fake return address callee save
+}
+
+constexpr uint32_t X86CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
+  return RoundUp((POPCOUNT(X86CalleeSaveCoreSpills(type)) /* gprs */ +
+                  1 /* Method* */) * kX86PointerSize, kStackAlignment);
+}
+
+constexpr QuickMethodFrameInfo X86CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
+  return QuickMethodFrameInfo(X86CalleeSaveFrameSize(type),
+                              X86CalleeSaveCoreSpills(type),
+                              0u);
+}
+
+}  // namespace x86
+}  // namespace art
+
+#endif  // ART_RUNTIME_ARCH_X86_QUICK_METHOD_FRAME_INFO_X86_H_
diff --git a/runtime/arch/x86_64/context_x86_64.cc b/runtime/arch/x86_64/context_x86_64.cc
index 29a7065..810ef94 100644
--- a/runtime/arch/x86_64/context_x86_64.cc
+++ b/runtime/arch/x86_64/context_x86_64.cc
@@ -16,8 +16,9 @@
 
 #include "context_x86_64.h"
 
-#include "mirror/art_method.h"
+#include "mirror/art_method-inl.h"
 #include "mirror/object-inl.h"
+#include "quick/quick_method_frame_info.h"
 #include "stack.h"
 
 namespace art {
@@ -40,17 +41,15 @@
 
 void X86_64Context::FillCalleeSaves(const StackVisitor& fr) {
   mirror::ArtMethod* method = fr.GetMethod();
-  uint32_t core_spills = method->GetCoreSpillMask();
-  uint32_t fp_core_spills = method->GetFpSpillMask();
-  size_t spill_count = POPCOUNT(core_spills);
-  size_t fp_spill_count = POPCOUNT(fp_core_spills);
-  size_t frame_size = method->GetFrameSizeInBytes();
+  const QuickMethodFrameInfo frame_info = method->GetQuickFrameInfo();
+  size_t spill_count = POPCOUNT(frame_info.CoreSpillMask());
+  size_t fp_spill_count = POPCOUNT(frame_info.FpSpillMask());
   if (spill_count > 0) {
     // Lowest number spill is farthest away, walk registers and fill into context.
     size_t j = 2;  // Offset j to skip return address spill.
     for (size_t i = 0; i < kNumberOfCpuRegisters; ++i) {
-      if (((core_spills >> i) & 1) != 0) {
-        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_size);
+      if (((frame_info.CoreSpillMask() >> i) & 1) != 0) {
+        gprs_[i] = fr.CalleeSaveAddress(spill_count - j, frame_info.FrameSizeInBytes());
         j++;
       }
     }
@@ -59,8 +58,9 @@
     // Lowest number spill is farthest away, walk registers and fill into context.
     size_t j = 2;  // Offset j to skip return address spill.
     for (size_t i = 0; i < kNumberOfFloatRegisters; ++i) {
-      if (((fp_core_spills >> i) & 1) != 0) {
-        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j, frame_size);
+      if (((frame_info.FpSpillMask() >> i) & 1) != 0) {
+        fprs_[i] = fr.CalleeSaveAddress(spill_count + fp_spill_count - j,
+                                        frame_info.FrameSizeInBytes());
         j++;
       }
     }
diff --git a/runtime/arch/x86_64/quick_method_frame_info_x86_64.h b/runtime/arch/x86_64/quick_method_frame_info_x86_64.h
new file mode 100644
index 0000000..6183909
--- /dev/null
+++ b/runtime/arch/x86_64/quick_method_frame_info_x86_64.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
+#define ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
+
+#include "quick/quick_method_frame_info.h"
+#include "registers_x86_64.h"
+#include "runtime.h"  // for Runtime::CalleeSaveType.
+
+namespace art {
+namespace x86_64 {
+
+static constexpr uint32_t kX86_64CalleeSaveRefSpills =
+    (1 << art::x86_64::RBX) | (1 << art::x86_64::RBP) | (1 << art::x86_64::R12) |
+    (1 << art::x86_64::R13) | (1 << art::x86_64::R14) | (1 << art::x86_64::R15);
+static constexpr uint32_t kX86_64CalleeSaveArgSpills =
+    (1 << art::x86_64::RSI) | (1 << art::x86_64::RDX) | (1 << art::x86_64::RCX) |
+    (1 << art::x86_64::R8) | (1 << art::x86_64::R9);
+static constexpr uint32_t kX86_64CalleeSaveFpArgSpills =
+    (1 << art::x86_64::XMM0) | (1 << art::x86_64::XMM1) | (1 << art::x86_64::XMM2) |
+    (1 << art::x86_64::XMM3) | (1 << art::x86_64::XMM4) | (1 << art::x86_64::XMM5) |
+    (1 << art::x86_64::XMM6) | (1 << art::x86_64::XMM7);
+
+constexpr uint32_t X86_64CalleeSaveCoreSpills(Runtime::CalleeSaveType type) {
+  return kX86_64CalleeSaveRefSpills |
+      (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveArgSpills : 0) |
+      (1 << art::x86_64::kNumberOfCpuRegisters);  // fake return address callee save;
+}
+
+constexpr uint32_t X86_64CalleeSaveFpSpills(Runtime::CalleeSaveType type) {
+  return (type == Runtime::kRefsAndArgs ? kX86_64CalleeSaveFpArgSpills : 0);
+}
+
+constexpr uint32_t X86_64CalleeSaveFrameSize(Runtime::CalleeSaveType type) {
+  return RoundUp((POPCOUNT(X86_64CalleeSaveCoreSpills(type)) /* gprs */ +
+                  POPCOUNT(X86_64CalleeSaveFpSpills(type)) /* fprs */ +
+                  1 /* Method* */) * kX86_64PointerSize, kStackAlignment);
+}
+
+constexpr QuickMethodFrameInfo X86_64CalleeSaveMethodFrameInfo(Runtime::CalleeSaveType type) {
+  return QuickMethodFrameInfo(X86_64CalleeSaveFrameSize(type),
+                              X86_64CalleeSaveCoreSpills(type),
+                              X86_64CalleeSaveFpSpills(type));
+}
+
+}  // namespace x86_64
+}  // namespace art
+
+#endif  // ART_RUNTIME_ARCH_X86_64_QUICK_METHOD_FRAME_INFO_X86_64_H_
diff --git a/runtime/class_linker.cc b/runtime/class_linker.cc
index e3c162b..b2d8b37 100644
--- a/runtime/class_linker.cc
+++ b/runtime/class_linker.cc
@@ -1828,27 +1828,6 @@
       DCHECK(method->GetEntryPointFromQuickCompiledCode() ==
           GetQuickResolutionTrampoline(runtime->GetClassLinker())
           || method->GetEntryPointFromQuickCompiledCode() == GetQuickGenericJniTrampoline());
-
-      DCHECK_EQ(method->GetFrameSizeInBytes<false>(), 0U);
-
-      // Fix up method metadata if necessary.
-      uint32_t s_len;
-      const char* shorty = dex_file.GetMethodShorty(dex_file.GetMethodId(dex_method_index), &s_len);
-      uint32_t refs = 1;    // Native method always has "this" or class.
-      for (uint32_t i = 1; i < s_len; ++i) {
-        if (shorty[i] == 'L') {
-          refs++;
-        }
-      }
-      size_t sirt_size = StackIndirectReferenceTable::GetAlignedSirtSize(refs);
-
-      // Get the generic spill masks and base frame size.
-      mirror::ArtMethod* callee_save_method =
-          Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs);
-
-      method->SetFrameSizeInBytes(callee_save_method->GetFrameSizeInBytes() + sirt_size);
-      method->SetCoreSpillMask(callee_save_method->GetCoreSpillMask());
-      method->SetFpSpillMask(callee_save_method->GetFpSpillMask());
     }
   }
 
@@ -3027,11 +3006,6 @@
 
   // At runtime the method looks like a reference and argument saving method, clone the code
   // related parameters from this method.
-  mirror::ArtMethod* refs_and_args =
-      Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs);
-  method->SetCoreSpillMask(refs_and_args->GetCoreSpillMask());
-  method->SetFpSpillMask(refs_and_args->GetFpSpillMask());
-  method->SetFrameSizeInBytes(refs_and_args->GetFrameSizeInBytes());
   method->SetEntryPointFromQuickCompiledCode(GetQuickProxyInvokeHandler());
   method->SetEntryPointFromPortableCompiledCode(GetPortableProxyInvokeHandler());
   method->SetEntryPointFromInterpreter(artInterpreterToCompiledCodeBridge);
diff --git a/runtime/class_linker_test.cc b/runtime/class_linker_test.cc
index 1218357..b68ab4a 100644
--- a/runtime/class_linker_test.cc
+++ b/runtime/class_linker_test.cc
@@ -491,9 +491,6 @@
     offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_code_item_offset_),           "dexCodeItemOffset"));
     offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, dex_method_index_),               "dexMethodIndex"));
     offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, method_index_),                   "methodIndex"));
-    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, quick_core_spill_mask_),          "quickCoreSpillMask"));
-    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, quick_fp_spill_mask_),            "quickFpSpillMask"));
-    offsets.push_back(CheckOffset(OFFSETOF_MEMBER(mirror::ArtMethod, quick_frame_size_in_bytes_),      "quickFrameSizeInBytes"));
   };
 };
 
diff --git a/runtime/exception_test.cc b/runtime/exception_test.cc
index 97a8367..feb2331 100644
--- a/runtime/exception_test.cc
+++ b/runtime/exception_test.cc
@@ -72,9 +72,10 @@
 
     const std::vector<uint8_t>& fake_vmap_table_data = fake_vmap_table_data_.GetData();
     const std::vector<uint8_t>& fake_mapping_data = fake_mapping_data_.GetData();
-    uint32_t vmap_table_offset = sizeof(OatMethodHeader) + fake_vmap_table_data.size();
+    uint32_t vmap_table_offset = sizeof(OatQuickMethodHeader) + fake_vmap_table_data.size();
     uint32_t mapping_table_offset = vmap_table_offset + fake_mapping_data.size();
-    OatMethodHeader method_header(vmap_table_offset, mapping_table_offset, code_size);
+    OatQuickMethodHeader method_header(mapping_table_offset, vmap_table_offset,
+                                       4 * kPointerSize, 0u, 0u, code_size);
     fake_header_code_and_maps_.resize(sizeof(method_header));
     memcpy(&fake_header_code_and_maps_[0], &method_header, sizeof(method_header));
     fake_header_code_and_maps_.insert(fake_header_code_and_maps_.begin(),
@@ -91,13 +92,11 @@
 
     method_f_ = my_klass_->FindVirtualMethod("f", "()I");
     ASSERT_TRUE(method_f_ != NULL);
-    method_f_->SetFrameSizeInBytes(4 * kPointerSize);
     method_f_->SetEntryPointFromQuickCompiledCode(code_ptr);
     method_f_->SetNativeGcMap(&fake_gc_map_[0]);
 
     method_g_ = my_klass_->FindVirtualMethod("g", "(I)V");
     ASSERT_TRUE(method_g_ != NULL);
-    method_g_->SetFrameSizeInBytes(4 * kPointerSize);
     method_g_->SetEntryPointFromQuickCompiledCode(code_ptr);
     method_g_->SetNativeGcMap(&fake_gc_map_[0]);
   }
diff --git a/runtime/gc/space/image_space.cc b/runtime/gc/space/image_space.cc
index 858582e..f1da6cd 100644
--- a/runtime/gc/space/image_space.cc
+++ b/runtime/gc/space/image_space.cc
@@ -245,21 +245,6 @@
     return nullptr;
   }
 
-  Runtime* runtime = Runtime::Current();
-  mirror::Object* resolution_method = image_header.GetImageRoot(ImageHeader::kResolutionMethod);
-  runtime->SetResolutionMethod(down_cast<mirror::ArtMethod*>(resolution_method));
-  mirror::Object* imt_conflict_method = image_header.GetImageRoot(ImageHeader::kImtConflictMethod);
-  runtime->SetImtConflictMethod(down_cast<mirror::ArtMethod*>(imt_conflict_method));
-  mirror::Object* default_imt = image_header.GetImageRoot(ImageHeader::kDefaultImt);
-  runtime->SetDefaultImt(down_cast<mirror::ObjectArray<mirror::ArtMethod>*>(default_imt));
-
-  mirror::Object* callee_save_method = image_header.GetImageRoot(ImageHeader::kCalleeSaveMethod);
-  runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), Runtime::kSaveAll);
-  callee_save_method = image_header.GetImageRoot(ImageHeader::kRefsOnlySaveMethod);
-  runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), Runtime::kRefsOnly);
-  callee_save_method = image_header.GetImageRoot(ImageHeader::kRefsAndArgsSaveMethod);
-  runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), Runtime::kRefsAndArgs);
-
   UniquePtr<ImageSpace> space(new ImageSpace(image_filename, image_location,
                                              map.release(), bitmap.release()));
   if (kIsDebugBuild) {
@@ -277,6 +262,23 @@
     return nullptr;
   }
 
+  Runtime* runtime = Runtime::Current();
+  runtime->SetInstructionSet(space->oat_file_->GetOatHeader().GetInstructionSet());
+
+  mirror::Object* resolution_method = image_header.GetImageRoot(ImageHeader::kResolutionMethod);
+  runtime->SetResolutionMethod(down_cast<mirror::ArtMethod*>(resolution_method));
+  mirror::Object* imt_conflict_method = image_header.GetImageRoot(ImageHeader::kImtConflictMethod);
+  runtime->SetImtConflictMethod(down_cast<mirror::ArtMethod*>(imt_conflict_method));
+  mirror::Object* default_imt = image_header.GetImageRoot(ImageHeader::kDefaultImt);
+  runtime->SetDefaultImt(down_cast<mirror::ObjectArray<mirror::ArtMethod>*>(default_imt));
+
+  mirror::Object* callee_save_method = image_header.GetImageRoot(ImageHeader::kCalleeSaveMethod);
+  runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), Runtime::kSaveAll);
+  callee_save_method = image_header.GetImageRoot(ImageHeader::kRefsOnlySaveMethod);
+  runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), Runtime::kRefsOnly);
+  callee_save_method = image_header.GetImageRoot(ImageHeader::kRefsAndArgsSaveMethod);
+  runtime->SetCalleeSaveMethod(down_cast<mirror::ArtMethod*>(callee_save_method), Runtime::kRefsAndArgs);
+
   if (VLOG_IS_ON(heap) || VLOG_IS_ON(startup)) {
     LOG(INFO) << "ImageSpace::Init exiting (" << PrettyDuration(NanoTime() - start_time)
              << ") " << *space.get();
diff --git a/runtime/mirror/art_method-inl.h b/runtime/mirror/art_method-inl.h
index fb9a09a..91753df 100644
--- a/runtime/mirror/art_method-inl.h
+++ b/runtime/mirror/art_method-inl.h
@@ -23,7 +23,8 @@
 #include "entrypoints/entrypoint_utils.h"
 #include "object_array.h"
 #include "oat.h"
-#include "runtime.h"
+#include "quick/quick_method_frame_info.h"
+#include "runtime-inl.h"
 
 namespace art {
 namespace mirror {
@@ -81,7 +82,7 @@
   if (code == nullptr) {
     return 0u;
   }
-  return reinterpret_cast<const OatMethodHeader*>(code)[-1].code_size_;
+  return reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].code_size_;
 }
 
 inline bool ArtMethod::CheckIncompatibleClassChange(InvokeType type) {
@@ -201,6 +202,40 @@
       OFFSET_OF_OBJECT_MEMBER(ArtMethod, entry_point_from_jni_), native_method);
 }
 
+inline QuickMethodFrameInfo ArtMethod::GetQuickFrameInfo() {
+  if (UNLIKELY(IsPortableCompiled())) {
+    // Portable compiled dex bytecode or jni stub.
+    return QuickMethodFrameInfo(kStackAlignment, 0u, 0u);
+  }
+  Runtime* runtime = Runtime::Current();
+  if (UNLIKELY(IsAbstract()) || UNLIKELY(IsProxyMethod())) {
+    return runtime->GetCalleeSaveMethodFrameInfo(Runtime::kRefsAndArgs);
+  }
+  if (UNLIKELY(IsRuntimeMethod())) {
+    return runtime->GetRuntimeMethodFrameInfo(this);
+  }
+
+  const void* entry_point = runtime->GetInstrumentation()->GetQuickCodeFor(this);
+  // On failure, instead of nullptr we get the quick-generic-jni-trampoline for native method
+  // indicating the generic JNI, or the quick-to-interpreter-bridge (but not the trampoline)
+  // for non-native methods. And we really shouldn't see a failure for non-native methods here.
+  DCHECK(entry_point != GetQuickToInterpreterBridgeTrampoline(runtime->GetClassLinker()));
+  CHECK(entry_point != GetQuickToInterpreterBridge());
+
+  if (UNLIKELY(entry_point == GetQuickGenericJniTrampoline())) {
+    // Generic JNI frame.
+    DCHECK(IsNative());
+    uint32_t sirt_refs = MethodHelper(this).GetNumberOfReferenceArgsWithoutReceiver() + 1;
+    size_t sirt_size = StackIndirectReferenceTable::GetAlignedSirtSize(sirt_refs);
+    QuickMethodFrameInfo callee_info = runtime->GetCalleeSaveMethodFrameInfo(Runtime::kRefsAndArgs);
+    return QuickMethodFrameInfo(callee_info.FrameSizeInBytes() + sirt_size,
+                                callee_info.CoreSpillMask(), callee_info.FpSpillMask());
+  }
+
+  const void* code_pointer = EntryPointToCodePointer(entry_point);
+  return reinterpret_cast<const OatQuickMethodHeader*>(code_pointer)[-1].frame_info_;
+}
+
 }  // namespace mirror
 }  // namespace art
 
diff --git a/runtime/mirror/art_method.cc b/runtime/mirror/art_method.cc
index 4275f25..eef60f7 100644
--- a/runtime/mirror/art_method.cc
+++ b/runtime/mirror/art_method.cc
@@ -389,7 +389,7 @@
   if (code == nullptr) {
     return nullptr;
   }
-  uint32_t offset = reinterpret_cast<const OatMethodHeader*>(code)[-1].mapping_table_offset_;
+  uint32_t offset = reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].mapping_table_offset_;
   if (UNLIKELY(offset == 0u)) {
     return nullptr;
   }
@@ -401,7 +401,7 @@
   if (code == nullptr) {
     return nullptr;
   }
-  uint32_t offset = reinterpret_cast<const OatMethodHeader*>(code)[-1].vmap_table_offset_;
+  uint32_t offset = reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].vmap_table_offset_;
   if (UNLIKELY(offset == 0u)) {
     return nullptr;
   }
diff --git a/runtime/mirror/art_method.h b/runtime/mirror/art_method.h
index 71f0210..49d22ab 100644
--- a/runtime/mirror/art_method.h
+++ b/runtime/mirror/art_method.h
@@ -23,6 +23,7 @@
 #include "modifiers.h"
 #include "object.h"
 #include "object_callbacks.h"
+#include "quick/quick_method_frame_info.h"
 
 namespace art {
 
@@ -318,19 +319,14 @@
 
   template <bool kCheckFrameSize = true>
   uint32_t GetFrameSizeInBytes() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    uint32_t result = GetField32(OFFSET_OF_OBJECT_MEMBER(ArtMethod, quick_frame_size_in_bytes_));
+    uint32_t result = GetQuickFrameInfo().FrameSizeInBytes();
     if (kCheckFrameSize) {
       DCHECK_LE(static_cast<size_t>(kStackAlignment), result);
     }
     return result;
   }
 
-  void SetFrameSizeInBytes(size_t new_frame_size_in_bytes)
-      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    // Not called within a transaction.
-    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(ArtMethod, quick_frame_size_in_bytes_),
-                      new_frame_size_in_bytes);
-  }
+  QuickMethodFrameInfo GetQuickFrameInfo() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   size_t GetReturnPcOffsetInBytes() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     return GetFrameSizeInBytes() - kPointerSize;
@@ -362,26 +358,6 @@
     return OFFSET_OF_OBJECT_MEMBER(ArtMethod, method_index_);
   }
 
-  uint32_t GetCoreSpillMask() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    return GetField32(OFFSET_OF_OBJECT_MEMBER(ArtMethod, quick_core_spill_mask_));
-  }
-
-  void SetCoreSpillMask(uint32_t core_spill_mask) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    // Computed during compilation.
-    // Not called within a transaction.
-    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(ArtMethod, quick_core_spill_mask_), core_spill_mask);
-  }
-
-  uint32_t GetFpSpillMask() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    return GetField32(OFFSET_OF_OBJECT_MEMBER(ArtMethod, quick_fp_spill_mask_));
-  }
-
-  void SetFpSpillMask(uint32_t fp_spill_mask) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
-    // Computed during compilation.
-    // Not called within a transaction.
-    SetField32<false>(OFFSET_OF_OBJECT_MEMBER(ArtMethod, quick_fp_spill_mask_), fp_spill_mask);
-  }
-
   // Is this a CalleSaveMethod or ResolutionMethod and therefore doesn't adhere to normal
   // conventions for a method of managed code. Returns false for Proxy methods.
   bool IsRuntimeMethod() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
@@ -474,20 +450,6 @@
   // ifTable.
   uint32_t method_index_;
 
-  // --- Quick compiler meta-data. ---
-  // TODO: merge and place in native heap, such as done with the code size.
-
-  // Bit map of spilled machine registers.
-  uint32_t quick_core_spill_mask_;
-
-  // Bit map of spilled floating point machine registers.
-  uint32_t quick_fp_spill_mask_;
-
-  // Fixed frame size for this method when executed.
-  uint32_t quick_frame_size_in_bytes_;
-
-  // --- End of quick compiler meta-data. ---
-
   static Class* java_lang_reflect_ArtMethod_;
 
  private:
diff --git a/runtime/oat.cc b/runtime/oat.cc
index a1f4fd0..cb9334a 100644
--- a/runtime/oat.cc
+++ b/runtime/oat.cc
@@ -22,7 +22,7 @@
 namespace art {
 
 const uint8_t OatHeader::kOatMagic[] = { 'o', 'a', 't', '\n' };
-const uint8_t OatHeader::kOatVersion[] = { '0', '2', '7', '\0' };
+const uint8_t OatHeader::kOatVersion[] = { '0', '2', '8', '\0' };
 
 OatHeader::OatHeader() {
   memset(this, 0, sizeof(*this));
@@ -345,40 +345,34 @@
 
 OatMethodOffsets::OatMethodOffsets()
   : code_offset_(0),
-    frame_size_in_bytes_(0),
-    core_spill_mask_(0),
-    fp_spill_mask_(0),
     gc_map_offset_(0)
 {}
 
 OatMethodOffsets::OatMethodOffsets(uint32_t code_offset,
-                                   uint32_t frame_size_in_bytes,
-                                   uint32_t core_spill_mask,
-                                   uint32_t fp_spill_mask,
                                    uint32_t gc_map_offset
                                    )
   : code_offset_(code_offset),
-    frame_size_in_bytes_(frame_size_in_bytes),
-    core_spill_mask_(core_spill_mask),
-    fp_spill_mask_(fp_spill_mask),
     gc_map_offset_(gc_map_offset)
 {}
 
 OatMethodOffsets::~OatMethodOffsets() {}
 
-OatMethodHeader::OatMethodHeader()
+OatQuickMethodHeader::OatQuickMethodHeader()
   : mapping_table_offset_(0),
     vmap_table_offset_(0),
+    frame_info_(0, 0, 0),
     code_size_(0)
 {}
 
-OatMethodHeader::OatMethodHeader(uint32_t vmap_table_offset, uint32_t mapping_table_offset,
-                                 uint32_t code_size)
+OatQuickMethodHeader::OatQuickMethodHeader(
+    uint32_t mapping_table_offset, uint32_t vmap_table_offset, uint32_t frame_size_in_bytes,
+    uint32_t core_spill_mask, uint32_t fp_spill_mask, uint32_t code_size)
   : mapping_table_offset_(mapping_table_offset),
     vmap_table_offset_(vmap_table_offset),
+    frame_info_(frame_size_in_bytes, core_spill_mask, fp_spill_mask),
     code_size_(code_size)
 {}
 
-OatMethodHeader::~OatMethodHeader() {}
+OatQuickMethodHeader::~OatQuickMethodHeader() {}
 
 }  // namespace art
diff --git a/runtime/oat.h b/runtime/oat.h
index e9dfae9..7be768c 100644
--- a/runtime/oat.h
+++ b/runtime/oat.h
@@ -22,6 +22,7 @@
 #include "base/macros.h"
 #include "dex_file.h"
 #include "instruction_set.h"
+#include "quick/quick_method_frame_info.h"
 
 namespace art {
 
@@ -137,34 +138,31 @@
   OatMethodOffsets();
 
   OatMethodOffsets(uint32_t code_offset,
-                   uint32_t frame_size_in_bytes,
-                   uint32_t core_spill_mask,
-                   uint32_t fp_spill_mask,
                    uint32_t gc_map_offset);
 
   ~OatMethodOffsets();
 
   uint32_t code_offset_;
-  uint32_t frame_size_in_bytes_;
-  uint32_t core_spill_mask_;
-  uint32_t fp_spill_mask_;
   uint32_t gc_map_offset_;
 };
 
-// OatMethodHeader precedes the raw code chunk generated by the Quick compiler.
-class PACKED(4) OatMethodHeader {
+// OatQuickMethodHeader precedes the raw code chunk generated by the Quick compiler.
+class PACKED(4) OatQuickMethodHeader {
  public:
-  OatMethodHeader();
+  OatQuickMethodHeader();
 
-  explicit OatMethodHeader(uint32_t mapping_table_offset, uint32_t vmap_table_offset,
-                           uint32_t code_size);
+  explicit OatQuickMethodHeader(uint32_t mapping_table_offset, uint32_t vmap_table_offset,
+                                uint32_t frame_size_in_bytes, uint32_t core_spill_mask,
+                                uint32_t fp_spill_mask, uint32_t code_size);
 
-  ~OatMethodHeader();
+  ~OatQuickMethodHeader();
 
   // The offset in bytes from the start of the mapping table to the end of the header.
   uint32_t mapping_table_offset_;
   // The offset in bytes from the start of the vmap table to the end of the header.
   uint32_t vmap_table_offset_;
+  // The stack frame information.
+  QuickMethodFrameInfo frame_info_;
   // The code size in bytes.
   uint32_t code_size_;
 };
diff --git a/runtime/oat_file-inl.h b/runtime/oat_file-inl.h
index 00ae797..97ca6b2 100644
--- a/runtime/oat_file-inl.h
+++ b/runtime/oat_file-inl.h
@@ -21,6 +21,30 @@
 
 namespace art {
 
+inline size_t OatFile::OatMethod::GetFrameSizeInBytes() const {
+  const void* code = mirror::ArtMethod::EntryPointToCodePointer(GetQuickCode());
+  if (code == nullptr) {
+    return 0u;
+  }
+  return reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].frame_info_.FrameSizeInBytes();
+}
+
+inline uint32_t OatFile::OatMethod::GetCoreSpillMask() const {
+  const void* code = mirror::ArtMethod::EntryPointToCodePointer(GetQuickCode());
+  if (code == nullptr) {
+    return 0u;
+  }
+  return reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].frame_info_.CoreSpillMask();
+}
+
+inline uint32_t OatFile::OatMethod::GetFpSpillMask() const {
+  const void* code = mirror::ArtMethod::EntryPointToCodePointer(GetQuickCode());
+  if (code == nullptr) {
+    return 0u;
+  }
+  return reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].frame_info_.FpSpillMask();
+}
+
 inline uint32_t OatFile::OatMethod::GetMappingTableOffset() const {
   const uint8_t* mapping_table = GetMappingTable();
   return static_cast<uint32_t>(mapping_table != nullptr ? mapping_table - begin_ : 0u);
@@ -36,7 +60,7 @@
   if (code == nullptr) {
     return nullptr;
   }
-  uint32_t offset = reinterpret_cast<const OatMethodHeader*>(code)[-1].mapping_table_offset_;
+  uint32_t offset = reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].mapping_table_offset_;
   if (UNLIKELY(offset == 0u)) {
     return nullptr;
   }
@@ -48,7 +72,7 @@
   if (code == nullptr) {
     return nullptr;
   }
-  uint32_t offset = reinterpret_cast<const OatMethodHeader*>(code)[-1].vmap_table_offset_;
+  uint32_t offset = reinterpret_cast<const OatQuickMethodHeader*>(code)[-1].vmap_table_offset_;
   if (UNLIKELY(offset == 0u)) {
     return nullptr;
   }
diff --git a/runtime/oat_file.cc b/runtime/oat_file.cc
index 56e1f05..7976f6a 100644
--- a/runtime/oat_file.cc
+++ b/runtime/oat_file.cc
@@ -464,7 +464,7 @@
   // NOTE: We don't keep the number of methods and cannot do a bounds check for method_index.
   if (methods_pointer_ == NULL) {
     CHECK_EQ(kOatClassNoneCompiled, type_);
-    return OatMethod(NULL, 0, 0, 0, 0, 0);
+    return OatMethod(NULL, 0, 0);
   }
   size_t methods_pointer_index;
   if (bitmap_ == NULL) {
@@ -473,7 +473,7 @@
   } else {
     CHECK_EQ(kOatClassSomeCompiled, type_);
     if (!BitVector::IsBitSet(bitmap_, method_index)) {
-      return OatMethod(NULL, 0, 0, 0, 0, 0);
+      return OatMethod(NULL, 0, 0);
     }
     size_t num_set_bits = BitVector::NumSetBits(bitmap_, method_index);
     methods_pointer_index = num_set_bits;
@@ -482,23 +482,14 @@
   return OatMethod(
       oat_file_->Begin(),
       oat_method_offsets.code_offset_,
-      oat_method_offsets.frame_size_in_bytes_,
-      oat_method_offsets.core_spill_mask_,
-      oat_method_offsets.fp_spill_mask_,
       oat_method_offsets.gc_map_offset_);
 }
 
 OatFile::OatMethod::OatMethod(const byte* base,
                               const uint32_t code_offset,
-                              const size_t frame_size_in_bytes,
-                              const uint32_t core_spill_mask,
-                              const uint32_t fp_spill_mask,
                               const uint32_t gc_map_offset)
   : begin_(base),
     code_offset_(code_offset),
-    frame_size_in_bytes_(frame_size_in_bytes),
-    core_spill_mask_(core_spill_mask),
-    fp_spill_mask_(fp_spill_mask),
     native_gc_map_offset_(gc_map_offset) {
 }
 
@@ -519,9 +510,6 @@
   CHECK(method != NULL);
   method->SetEntryPointFromPortableCompiledCode(GetPortableCode());
   method->SetEntryPointFromQuickCompiledCode(GetQuickCode());
-  method->SetFrameSizeInBytes(frame_size_in_bytes_);
-  method->SetCoreSpillMask(core_spill_mask_);
-  method->SetFpSpillMask(fp_spill_mask_);
   method->SetNativeGcMap(GetNativeGcMap());  // Used by native methods in work around JNI mode.
 }
 
diff --git a/runtime/oat_file.h b/runtime/oat_file.h
index b358a00..8477723 100644
--- a/runtime/oat_file.h
+++ b/runtime/oat_file.h
@@ -78,15 +78,6 @@
     uint32_t GetCodeOffset() const {
       return code_offset_;
     }
-    size_t GetFrameSizeInBytes() const {
-      return frame_size_in_bytes_;
-    }
-    uint32_t GetCoreSpillMask() const {
-      return core_spill_mask_;
-    }
-    uint32_t GetFpSpillMask() const {
-      return fp_spill_mask_;
-    }
     uint32_t GetNativeGcMapOffset() const {
       return native_gc_map_offset_;
     }
@@ -120,6 +111,9 @@
       return GetOatPointer<const uint8_t*>(native_gc_map_offset_);
     }
 
+    size_t GetFrameSizeInBytes() const;
+    uint32_t GetCoreSpillMask() const;
+    uint32_t GetFpSpillMask() const;
     uint32_t GetMappingTableOffset() const;
     uint32_t GetVmapTableOffset() const;
     const uint8_t* GetMappingTable() const;
@@ -130,9 +124,6 @@
     // Create an OatMethod with offsets relative to the given base address
     OatMethod(const byte* base,
               const uint32_t code_offset,
-              const size_t frame_size_in_bytes,
-              const uint32_t core_spill_mask,
-              const uint32_t fp_spill_mask,
               const uint32_t gc_map_offset);
 
    private:
@@ -147,9 +138,6 @@
     const byte* begin_;
 
     uint32_t code_offset_;
-    size_t frame_size_in_bytes_;
-    uint32_t core_spill_mask_;
-    uint32_t fp_spill_mask_;
     uint32_t native_gc_map_offset_;
 
     friend class OatClass;
diff --git a/runtime/quick/quick_method_frame_info.h b/runtime/quick/quick_method_frame_info.h
new file mode 100644
index 0000000..684d4da
--- /dev/null
+++ b/runtime/quick/quick_method_frame_info.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_QUICK_QUICK_METHOD_FRAME_INFO_H_
+#define ART_RUNTIME_QUICK_QUICK_METHOD_FRAME_INFO_H_
+
+#include <stdint.h>
+
+#include "base/macros.h"
+
+namespace art {
+
+class PACKED(4) QuickMethodFrameInfo {
+ public:
+  constexpr QuickMethodFrameInfo()
+    : frame_size_in_bytes_(0u),
+      core_spill_mask_(0u),
+      fp_spill_mask_(0u) {
+  }
+
+  constexpr QuickMethodFrameInfo(uint32_t frame_size_in_bytes, uint32_t core_spill_mask,
+                                 uint32_t fp_spill_mask)
+    : frame_size_in_bytes_(frame_size_in_bytes),
+      core_spill_mask_(core_spill_mask),
+      fp_spill_mask_(fp_spill_mask) {
+  }
+
+  uint32_t FrameSizeInBytes() const {
+    return frame_size_in_bytes_;
+  }
+
+  uint32_t CoreSpillMask() const {
+    return core_spill_mask_;
+  }
+
+  uint32_t FpSpillMask() const {
+    return fp_spill_mask_;
+  }
+
+ private:
+  uint32_t frame_size_in_bytes_;
+  uint32_t core_spill_mask_;
+  uint32_t fp_spill_mask_;
+};
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_QUICK_QUICK_METHOD_FRAME_INFO_H_
diff --git a/runtime/runtime-inl.h b/runtime/runtime-inl.h
new file mode 100644
index 0000000..29ddd1d
--- /dev/null
+++ b/runtime/runtime-inl.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_RUNTIME_INL_H_
+#define ART_RUNTIME_RUNTIME_INL_H_
+
+#include "runtime.h"
+
+namespace art {
+
+inline QuickMethodFrameInfo Runtime::GetRuntimeMethodFrameInfo(mirror::ArtMethod* method) const {
+  DCHECK(method != nullptr);
+  // Cannot be imt-conflict-method or resolution-method.
+  DCHECK(method != GetImtConflictMethod());
+  DCHECK(method != GetResolutionMethod());
+  // Don't use GetCalleeSaveMethod(), some tests don't set all callee save methods.
+  if (method == callee_save_methods_[Runtime::kRefsAndArgs]) {
+    return GetCalleeSaveMethodFrameInfo(Runtime::kRefsAndArgs);
+  } else if (method == callee_save_methods_[Runtime::kSaveAll]) {
+    return GetCalleeSaveMethodFrameInfo(Runtime::kSaveAll);
+  } else {
+    DCHECK(method == callee_save_methods_[Runtime::kRefsOnly]);
+    return GetCalleeSaveMethodFrameInfo(Runtime::kRefsOnly);
+  }
+}
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_RUNTIME_INL_H_
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index d78be92..48322f0 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -30,10 +30,15 @@
 #include <vector>
 #include <fcntl.h>
 
+#include "arch/arm/quick_method_frame_info_arm.h"
 #include "arch/arm/registers_arm.h"
+#include "arch/arm64/quick_method_frame_info_arm64.h"
 #include "arch/arm64/registers_arm64.h"
+#include "arch/mips/quick_method_frame_info_mips.h"
 #include "arch/mips/registers_mips.h"
+#include "arch/x86/quick_method_frame_info_x86.h"
 #include "arch/x86/registers_x86.h"
+#include "arch/x86_64/quick_method_frame_info_x86_64.h"
 #include "arch/x86_64/registers_x86_64.h"
 #include "atomic.h"
 #include "class_linker.h"
@@ -55,6 +60,7 @@
 #include "monitor.h"
 #include "parsed_options.h"
 #include "oat_file.h"
+#include "quick/quick_method_frame_info.h"
 #include "reflection.h"
 #include "ScopedLocalRef.h"
 #include "scoped_thread_state_change.h"
@@ -88,6 +94,7 @@
       resolution_method_(nullptr),
       imt_conflict_method_(nullptr),
       default_imt_(nullptr),
+      instruction_set_(kNone),
       compiler_callbacks_(nullptr),
       is_zygote_(false),
       is_concurrent_gc_enabled_(true),
@@ -981,8 +988,7 @@
   return method.get();
 }
 
-mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(InstructionSet instruction_set,
-                                                   CalleeSaveType type) {
+mirror::ArtMethod* Runtime::CreateCalleeSaveMethod(CalleeSaveType type) {
   Thread* self = Thread::Current();
   Runtime* runtime = Runtime::Current();
   ClassLinker* class_linker = runtime->GetClassLinker();
@@ -992,118 +998,7 @@
   method->SetDexMethodIndex(DexFile::kDexNoIndex);
   method->SetEntryPointFromPortableCompiledCode(nullptr);
   method->SetEntryPointFromQuickCompiledCode(nullptr);
-  if ((instruction_set == kThumb2) || (instruction_set == kArm)) {
-    uint32_t ref_spills = (1 << art::arm::R5) | (1 << art::arm::R6)  | (1 << art::arm::R7) |
-                          (1 << art::arm::R8) | (1 << art::arm::R10) | (1 << art::arm::R11);
-    uint32_t arg_spills = (1 << art::arm::R1) | (1 << art::arm::R2) | (1 << art::arm::R3);
-    uint32_t all_spills = (1 << art::arm::R4) | (1 << art::arm::R9);
-    uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
-                           (type == kSaveAll ? all_spills : 0) | (1 << art::arm::LR);
-    uint32_t fp_all_spills = (1 << art::arm::S0)  | (1 << art::arm::S1)  | (1 << art::arm::S2) |
-                             (1 << art::arm::S3)  | (1 << art::arm::S4)  | (1 << art::arm::S5) |
-                             (1 << art::arm::S6)  | (1 << art::arm::S7)  | (1 << art::arm::S8) |
-                             (1 << art::arm::S9)  | (1 << art::arm::S10) | (1 << art::arm::S11) |
-                             (1 << art::arm::S12) | (1 << art::arm::S13) | (1 << art::arm::S14) |
-                             (1 << art::arm::S15) | (1 << art::arm::S16) | (1 << art::arm::S17) |
-                             (1 << art::arm::S18) | (1 << art::arm::S19) | (1 << art::arm::S20) |
-                             (1 << art::arm::S21) | (1 << art::arm::S22) | (1 << art::arm::S23) |
-                             (1 << art::arm::S24) | (1 << art::arm::S25) | (1 << art::arm::S26) |
-                             (1 << art::arm::S27) | (1 << art::arm::S28) | (1 << art::arm::S29) |
-                             (1 << art::arm::S30) | (1 << art::arm::S31);
-    uint32_t fp_spills = type == kSaveAll ? fp_all_spills : 0;
-    size_t frame_size = RoundUp((POPCOUNT(core_spills) /* gprs */ +
-                                 POPCOUNT(fp_spills) /* fprs */ +
-                                 1 /* Method* */) * kArmPointerSize, kStackAlignment);
-    method->SetFrameSizeInBytes(frame_size);
-    method->SetCoreSpillMask(core_spills);
-    method->SetFpSpillMask(fp_spills);
-  } else if (instruction_set == kMips) {
-    uint32_t ref_spills = (1 << art::mips::S2) | (1 << art::mips::S3) | (1 << art::mips::S4) |
-                          (1 << art::mips::S5) | (1 << art::mips::S6) | (1 << art::mips::S7) |
-                          (1 << art::mips::GP) | (1 << art::mips::FP);
-    uint32_t arg_spills = (1 << art::mips::A1) | (1 << art::mips::A2) | (1 << art::mips::A3);
-    uint32_t all_spills = (1 << art::mips::S0) | (1 << art::mips::S1);
-    uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
-                           (type == kSaveAll ? all_spills : 0) | (1 << art::mips::RA);
-    size_t frame_size = RoundUp((POPCOUNT(core_spills) /* gprs */ +
-                                (type == kRefsAndArgs ? 0 : 3) + 1 /* Method* */) *
-                                kMipsPointerSize, kStackAlignment);
-    method->SetFrameSizeInBytes(frame_size);
-    method->SetCoreSpillMask(core_spills);
-    method->SetFpSpillMask(0);
-  } else if (instruction_set == kX86) {
-    uint32_t ref_spills = (1 << art::x86::EBP) | (1 << art::x86::ESI) | (1 << art::x86::EDI);
-    uint32_t arg_spills = (1 << art::x86::ECX) | (1 << art::x86::EDX) | (1 << art::x86::EBX);
-    uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
-                         (1 << art::x86::kNumberOfCpuRegisters);  // fake return address callee save
-    size_t frame_size = RoundUp((POPCOUNT(core_spills) /* gprs */ +
-                                 1 /* Method* */) * kX86PointerSize, kStackAlignment);
-    method->SetFrameSizeInBytes(frame_size);
-    method->SetCoreSpillMask(core_spills);
-    method->SetFpSpillMask(0);
-  } else if (instruction_set == kX86_64) {
-    uint32_t ref_spills =
-        (1 << art::x86_64::RBX) | (1 << art::x86_64::RBP) | (1 << art::x86_64::R12) |
-        (1 << art::x86_64::R13) | (1 << art::x86_64::R14) | (1 << art::x86_64::R15);
-    uint32_t arg_spills =
-        (1 << art::x86_64::RSI) | (1 << art::x86_64::RDX) | (1 << art::x86_64::RCX) |
-        (1 << art::x86_64::R8) | (1 << art::x86_64::R9);
-    uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
-        (1 << art::x86_64::kNumberOfCpuRegisters);  // fake return address callee save
-    uint32_t fp_arg_spills =
-        (1 << art::x86_64::XMM0) | (1 << art::x86_64::XMM1) | (1 << art::x86_64::XMM2) |
-        (1 << art::x86_64::XMM3) | (1 << art::x86_64::XMM4) | (1 << art::x86_64::XMM5) |
-        (1 << art::x86_64::XMM6) | (1 << art::x86_64::XMM7);
-    uint32_t fp_spills = (type == kRefsAndArgs ? fp_arg_spills : 0);
-    size_t frame_size = RoundUp((POPCOUNT(core_spills) /* gprs */ +
-                                 POPCOUNT(fp_spills) /* fprs */ +
-                                 1 /* Method* */) * kX86_64PointerSize, kStackAlignment);
-    method->SetFrameSizeInBytes(frame_size);
-    method->SetCoreSpillMask(core_spills);
-    method->SetFpSpillMask(fp_spills);
-  } else if (instruction_set == kArm64) {
-      // Callee saved registers
-      uint32_t ref_spills = (1 << art::arm64::X19) | (1 << art::arm64::X20) | (1 << art::arm64::X21) |
-                            (1 << art::arm64::X22) | (1 << art::arm64::X23) | (1 << art::arm64::X24) |
-                            (1 << art::arm64::X25) | (1 << art::arm64::X26) | (1 << art::arm64::X27) |
-                            (1 << art::arm64::X28);
-      // X0 is the method pointer. Not saved.
-      uint32_t arg_spills = (1 << art::arm64::X1) | (1 << art::arm64::X2) | (1 << art::arm64::X3) |
-                            (1 << art::arm64::X4) | (1 << art::arm64::X5) | (1 << art::arm64::X6) |
-                            (1 << art::arm64::X7);
-      // TODO  This is conservative. Only ALL should include the thread register.
-      // The thread register is not preserved by the aapcs64.
-      // LR is always saved.
-      uint32_t all_spills =  0;  // (1 << art::arm64::LR);
-      uint32_t core_spills = ref_spills | (type == kRefsAndArgs ? arg_spills : 0) |
-                             (type == kSaveAll ? all_spills : 0) | (1 << art::arm64::FP)
-                             | (1 << art::arm64::X18) | (1 << art::arm64::LR);
-
-      // Save callee-saved floating point registers. Rest are scratch/parameters.
-      uint32_t fp_arg_spills = (1 << art::arm64::D0) | (1 << art::arm64::D1) | (1 << art::arm64::D2) |
-                            (1 << art::arm64::D3) | (1 << art::arm64::D4) | (1 << art::arm64::D5) |
-                            (1 << art::arm64::D6) | (1 << art::arm64::D7);
-      uint32_t fp_ref_spills = (1 << art::arm64::D8)  | (1 << art::arm64::D9)  | (1 << art::arm64::D10) |
-                               (1 << art::arm64::D11)  | (1 << art::arm64::D12)  | (1 << art::arm64::D13) |
-                               (1 << art::arm64::D14)  | (1 << art::arm64::D15);
-      uint32_t fp_all_spills = fp_arg_spills |
-                          (1 << art::arm64::D16)  | (1 << art::arm64::D17) | (1 << art::arm64::D18) |
-                          (1 << art::arm64::D19)  | (1 << art::arm64::D20) | (1 << art::arm64::D21) |
-                          (1 << art::arm64::D22)  | (1 << art::arm64::D23) | (1 << art::arm64::D24) |
-                          (1 << art::arm64::D25)  | (1 << art::arm64::D26) | (1 << art::arm64::D27) |
-                          (1 << art::arm64::D28)  | (1 << art::arm64::D29) | (1 << art::arm64::D30) |
-                          (1 << art::arm64::D31);
-      uint32_t fp_spills = fp_ref_spills | (type == kRefsAndArgs ? fp_arg_spills: 0)
-                          | (type == kSaveAll ? fp_all_spills : 0);
-      size_t frame_size = RoundUp((POPCOUNT(core_spills) /* gprs */ +
-                                   POPCOUNT(fp_spills) /* fprs */ +
-                                   1 /* Method* */) * kArm64PointerSize, kStackAlignment);
-      method->SetFrameSizeInBytes(frame_size);
-      method->SetCoreSpillMask(core_spills);
-      method->SetFpSpillMask(fp_spills);
-  } else {
-    UNIMPLEMENTED(FATAL) << instruction_set;
-  }
+  DCHECK_NE(instruction_set_, kNone);
   return method.get();
 }
 
@@ -1121,6 +1016,38 @@
   Dbg::AllowNewObjectRegistryObjects();
 }
 
+void Runtime::SetInstructionSet(InstructionSet instruction_set) {
+  instruction_set_ = instruction_set;
+  if ((instruction_set_ == kThumb2) || (instruction_set_ == kArm)) {
+    for (int i = 0; i != kLastCalleeSaveType; ++i) {
+      CalleeSaveType type = static_cast<CalleeSaveType>(i);
+      callee_save_method_frame_infos_[i] = arm::ArmCalleeSaveMethodFrameInfo(type);
+    }
+  } else if (instruction_set_ == kMips) {
+    for (int i = 0; i != kLastCalleeSaveType; ++i) {
+      CalleeSaveType type = static_cast<CalleeSaveType>(i);
+      callee_save_method_frame_infos_[i] = mips::MipsCalleeSaveMethodFrameInfo(type);
+    }
+  } else if (instruction_set_ == kX86) {
+    for (int i = 0; i != kLastCalleeSaveType; ++i) {
+      CalleeSaveType type = static_cast<CalleeSaveType>(i);
+      callee_save_method_frame_infos_[i] = x86::X86CalleeSaveMethodFrameInfo(type);
+    }
+  } else if (instruction_set_ == kX86_64) {
+    for (int i = 0; i != kLastCalleeSaveType; ++i) {
+      CalleeSaveType type = static_cast<CalleeSaveType>(i);
+      callee_save_method_frame_infos_[i] = x86_64::X86_64CalleeSaveMethodFrameInfo(type);
+    }
+  } else if (instruction_set_ == kArm64) {
+    for (int i = 0; i != kLastCalleeSaveType; ++i) {
+      CalleeSaveType type = static_cast<CalleeSaveType>(i);
+      callee_save_method_frame_infos_[i] = arm64::Arm64CalleeSaveMethodFrameInfo(type);
+    }
+  } else {
+    UNIMPLEMENTED(FATAL) << instruction_set_;
+  }
+}
+
 void Runtime::SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type) {
   DCHECK_LT(static_cast<int>(type), static_cast<int>(kLastCalleeSaveType));
   callee_save_methods_[type] = method;
diff --git a/runtime/runtime.h b/runtime/runtime.h
index 1ee0b1a..07b47c3 100644
--- a/runtime/runtime.h
+++ b/runtime/runtime.h
@@ -34,6 +34,7 @@
 #include "instrumentation.h"
 #include "jobject_comparator.h"
 #include "object_callbacks.h"
+#include "quick/quick_method_frame_info.h"
 #include "runtime_stats.h"
 #include "safe_map.h"
 #include "fault_handler.h"
@@ -325,20 +326,25 @@
     return callee_save_methods_[type];
   }
 
+  QuickMethodFrameInfo GetCalleeSaveMethodFrameInfo(CalleeSaveType type) const {
+    return callee_save_method_frame_infos_[type];
+  }
+
+  QuickMethodFrameInfo GetRuntimeMethodFrameInfo(mirror::ArtMethod* method) const;
+
   static size_t GetCalleeSaveMethodOffset(CalleeSaveType type) {
     return OFFSETOF_MEMBER(Runtime, callee_save_methods_[type]);
   }
 
+  InstructionSet GetInstructionSet() const {
+    return instruction_set_;
+  }
+
+  void SetInstructionSet(InstructionSet instruction_set);
+
   void SetCalleeSaveMethod(mirror::ArtMethod* method, CalleeSaveType type);
 
-  mirror::ArtMethod* CreateCalleeSaveMethod(InstructionSet instruction_set,
-                                                 CalleeSaveType type)
-      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
-
-  mirror::ArtMethod* CreateRefOnlyCalleeSaveMethod(InstructionSet instruction_set)
-      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
-
-  mirror::ArtMethod* CreateRefAndArgsCalleeSaveMethod(InstructionSet instruction_set)
+  mirror::ArtMethod* CreateCalleeSaveMethod(CalleeSaveType type)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   int32_t GetStat(int kind);
@@ -468,6 +474,9 @@
   mirror::ArtMethod* imt_conflict_method_;
   mirror::ObjectArray<mirror::ArtMethod>* default_imt_;
 
+  InstructionSet instruction_set_;
+  QuickMethodFrameInfo callee_save_method_frame_infos_[kLastCalleeSaveType];
+
   CompilerCallbacks* compiler_callbacks_;
   bool is_zygote_;
   bool is_concurrent_gc_enabled_;
diff --git a/runtime/stack.cc b/runtime/stack.cc
index 5e64e59..b984aa6 100644
--- a/runtime/stack.cc
+++ b/runtime/stack.cc
@@ -23,6 +23,7 @@
 #include "mirror/object-inl.h"
 #include "mirror/object_array-inl.h"
 #include "object_utils.h"
+#include "quick/quick_method_frame_info.h"
 #include "runtime.h"
 #include "thread.h"
 #include "thread_list.h"
@@ -142,18 +143,17 @@
     DCHECK(m == GetMethod());
     const VmapTable vmap_table(m->GetVmapTable());
     uint32_t vmap_offset;
+    QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo();
     // TODO: IsInContext stops before spotting floating point registers.
     if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) {
       bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg);
-      uint32_t spill_mask = is_float ? m->GetFpSpillMask()
-                                     : m->GetCoreSpillMask();
+      uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask();
       return GetGPR(vmap_table.ComputeRegister(spill_mask, vmap_offset, kind));
     } else {
       const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem();
       DCHECK(code_item != NULL) << PrettyMethod(m);  // Can't be NULL or how would we compile its instructions?
-      size_t frame_size = m->GetFrameSizeInBytes();
-      return *GetVRegAddr(cur_quick_frame_, code_item, m->GetCoreSpillMask(), m->GetFpSpillMask(),
-                          frame_size, vreg);
+      return *GetVRegAddr(cur_quick_frame_, code_item, frame_info.CoreSpillMask(),
+                          frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), vreg);
     }
   } else {
     return cur_shadow_frame_->GetVReg(vreg);
@@ -167,19 +167,18 @@
     DCHECK(m == GetMethod());
     const VmapTable vmap_table(m->GetVmapTable());
     uint32_t vmap_offset;
+    QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo();
     // TODO: IsInContext stops before spotting floating point registers.
     if (vmap_table.IsInContext(vreg, kind, &vmap_offset)) {
       bool is_float = (kind == kFloatVReg) || (kind == kDoubleLoVReg) || (kind == kDoubleHiVReg);
-      uint32_t spill_mask = is_float ? m->GetFpSpillMask() : m->GetCoreSpillMask();
+      uint32_t spill_mask = is_float ? frame_info.FpSpillMask() : frame_info.CoreSpillMask();
       const uint32_t reg = vmap_table.ComputeRegister(spill_mask, vmap_offset, kReferenceVReg);
       SetGPR(reg, new_value);
     } else {
       const DexFile::CodeItem* code_item = MethodHelper(m).GetCodeItem();
       DCHECK(code_item != NULL) << PrettyMethod(m);  // Can't be NULL or how would we compile its instructions?
-      uint32_t core_spills = m->GetCoreSpillMask();
-      uint32_t fp_spills = m->GetFpSpillMask();
-      size_t frame_size = m->GetFrameSizeInBytes();
-      int offset = GetVRegOffset(code_item, core_spills, fp_spills, frame_size, vreg, kRuntimeISA);
+      int offset = GetVRegOffset(code_item, frame_info.CoreSpillMask(), frame_info.FpSpillMask(),
+                                 frame_info.FrameSizeInBytes(), vreg, kRuntimeISA);
       byte* vreg_addr = reinterpret_cast<byte*>(GetCurrentQuickFrame()) + offset;
       *reinterpret_cast<uint32_t*>(vreg_addr) = new_value;
     }
diff --git a/runtime/thread.cc b/runtime/thread.cc
index 00a66d7..7ed0cb4 100644
--- a/runtime/thread.cc
+++ b/runtime/thread.cc
@@ -55,6 +55,7 @@
 #include "monitor.h"
 #include "object_utils.h"
 #include "quick_exception_handler.h"
+#include "quick/quick_method_frame_info.h"
 #include "reflection.h"
 #include "runtime.h"
 #include "scoped_thread_state_change.h"
@@ -2019,9 +2020,7 @@
         const uint8_t* reg_bitmap = map.FindBitMap(GetNativePcOffset());
         DCHECK(reg_bitmap != nullptr);
         const VmapTable vmap_table(m->GetVmapTable());
-        uint32_t core_spills = m->GetCoreSpillMask();
-        uint32_t fp_spills = m->GetFpSpillMask();
-        size_t frame_size = m->GetFrameSizeInBytes();
+        QuickMethodFrameInfo frame_info = m->GetQuickFrameInfo();
         // For all dex registers in the bitmap
         mirror::ArtMethod** cur_quick_frame = GetCurrentQuickFrame();
         DCHECK(cur_quick_frame != nullptr);
@@ -2030,7 +2029,8 @@
           if (TestBitmap(reg, reg_bitmap)) {
             uint32_t vmap_offset;
             if (vmap_table.IsInContext(reg, kReferenceVReg, &vmap_offset)) {
-              int vmap_reg = vmap_table.ComputeRegister(core_spills, vmap_offset, kReferenceVReg);
+              int vmap_reg = vmap_table.ComputeRegister(frame_info.CoreSpillMask(), vmap_offset,
+                                                        kReferenceVReg);
               // This is sound as spilled GPRs will be word sized (ie 32 or 64bit).
               mirror::Object** ref_addr = reinterpret_cast<mirror::Object**>(GetGPRAddress(vmap_reg));
               if (*ref_addr != nullptr) {
@@ -2039,8 +2039,8 @@
             } else {
               StackReference<mirror::Object>* ref_addr =
                   reinterpret_cast<StackReference<mirror::Object>*>(
-                      GetVRegAddr(cur_quick_frame, code_item, core_spills, fp_spills, frame_size,
-                                  reg));
+                      GetVRegAddr(cur_quick_frame, code_item, frame_info.CoreSpillMask(),
+                                  frame_info.FpSpillMask(), frame_info.FrameSizeInBytes(), reg));
               mirror::Object* ref = ref_addr->AsMirrorPtr();
               if (ref != nullptr) {
                 mirror::Object* new_ref = ref;