Helpers and refactorings to prepare for interpreter optimizations (x64)

- Add data structure offsets that will be used in assembly code.
- Be explicit about a stack overflow in a fault handler.
- Move assembly helper code in asm_support so interpreter can use it.
- Support putting literals in InterpreterCache.
- Fix artHandleFillArrayDataFromCode for x64.

Bug: 119800099
Test: test.py
Change-Id: I2729f87fe5d09c04ae2e7081636f0cd89ac14c21

1 files changed, 5 insertions, 1 deletions

diff --git a/runtime/interpreter/interpreter_cache.h b/runtime/interpreter/interpreter_cache.h
index 003ea6c8d3..0ada562438 100644
--- a/runtime/interpreter/interpreter_cache.h
+++ b/runtime/interpreter/interpreter_cache.h
@@ -45,10 +45,10 @@ class Thread;
 // Aligned to 16-bytes to make it easier to get the address of the cache
 // from assembly (it ensures that the offset is valid immediate value).
 class ALIGNED(16) InterpreterCache {
+ public:
   // Aligned since we load the whole entry in single assembly instruction.
   typedef std::pair<const void*, size_t> Entry ALIGNED(2 * sizeof(size_t));
 
- public:
   // 2x size increase/decrease corresponds to ~0.5% interpreter performance change.
   // Value of 256 has around 75% cache hit rate.
   static constexpr size_t kSize = 256;
@@ -77,6 +77,10 @@ class ALIGNED(16) InterpreterCache {
     data_[IndexOf(key)] = Entry{key, value};
   }
 
+  std::array<Entry, kSize>& GetArray() {
+    return data_;
+  }
+
  private:
   bool IsCalledFromOwningThread();