(Experimental) Add Brooks pointers.

This feature is disabled by default.

Verified that the Brooks pointers are installed correctly by using the
CMS/SS collectors.

Change-Id: Ia9be9814ab6e29169ac85edc4792ce8c81d552a9

1 files changed, 26 insertions, 0 deletions

diff --git a/runtime/asm_support.h b/runtime/asm_support.h
index 4c42099..0c1a72a 100644
--- a/runtime/asm_support.h
+++ b/runtime/asm_support.h
@@ -17,6 +17,8 @@
 #ifndef ART_RUNTIME_ASM_SUPPORT_H_
 #define ART_RUNTIME_ASM_SUPPORT_H_
 
+#include "brooks_pointer.h"
+
 // Value loaded into rSUSPEND for quick. When this value is counted down to zero we do a suspend
 // check.
 #define SUSPEND_CHECK_INTERVAL (1000)
@@ -25,6 +27,8 @@
 #define CLASS_OFFSET 0
 #define LOCK_WORD_OFFSET 4
 
+#ifndef USE_BROOKS_POINTER
+
 // Offsets within java.lang.Class.
 #define CLASS_COMPONENT_TYPE_OFFSET 12
 
@@ -43,4 +47,26 @@
 #define METHOD_PORTABLE_CODE_OFFSET 40
 #define METHOD_QUICK_CODE_OFFSET 48
 
+#else
+
+// Offsets within java.lang.Class.
+#define CLASS_COMPONENT_TYPE_OFFSET 20
+
+// Array offsets.
+#define ARRAY_LENGTH_OFFSET 16
+#define OBJECT_ARRAY_DATA_OFFSET 20
+
+// Offsets within java.lang.String.
+#define STRING_VALUE_OFFSET 16
+#define STRING_COUNT_OFFSET 20
+#define STRING_OFFSET_OFFSET 28
+#define STRING_DATA_OFFSET 20
+
+// Offsets within java.lang.Method.
+#define METHOD_DEX_CACHE_METHODS_OFFSET 20
+#define METHOD_PORTABLE_CODE_OFFSET 48
+#define METHOD_QUICK_CODE_OFFSET 56
+
+#endif
+
 #endif  // ART_RUNTIME_ASM_SUPPORT_H_