Oat compiler integration snapshot.

Cleanly compiles, but not integrated.  Old-world dependencies captured
in hacked-up temporary files "Dalvik.h" and "HackStubs.cc".

Dalvik.h is a placeholder that captures all of the constants, struct
definitions and inline functions the compiler needs.  It largely consists
of declaration fragments of libdex, Object.h, DvmDex.h and Thread.h.

HackStubs.cc contains empty shells for some required libdex routines.

Change-Id: Ia479dda41da4e3162ff6df383252fdc7dbf38d71
diff --git a/src/compiler/codegen/arm/CalloutHelper.h b/src/compiler/codegen/arm/CalloutHelper.h
new file mode 100644
index 0000000..933f686
--- /dev/null
+++ b/src/compiler/codegen/arm/CalloutHelper.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2011 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_SRC_COMPILER_CODEGEN_ARM_CALLOUT_HELPER_H_
+#define ART_SRC_COMPILER_CODEGEN_ARM_CALLOUT_HELPER_H_
+
+#include "../../Dalvik.h"
+
+/* Helper functions used at runtime by compiled code */
+
+/* Conversions */
+extern "C" float __aeabi_i2f(int op1);             // OP_INT_TO_FLOAT
+extern "C" int __aeabi_f2iz(float op1);            // OP_FLOAT_TO_INT
+extern "C" float __aeabi_d2f(double op1);          // OP_DOUBLE_TO_FLOAT
+extern "C" double __aeabi_f2d(float op1);          // OP_FLOAT_TO_DOUBLE
+extern "C" double __aeabi_i2d(int op1);            // OP_INT_TO_DOUBLE
+extern "C" int __aeabi_d2iz(double op1);           // OP_DOUBLE_TO_INT
+extern "C" float __aeabi_l2f(long op1);            // OP_LONG_TO_FLOAT
+extern "C" double __aeabi_l2d(long op1);           // OP_LONG_TO_DOUBLE
+s8 artF2L(float op1);                // OP_FLOAT_TO_LONG
+s8 artD2L(double op1);               // OP_DOUBLE_TO_LONG
+
+/* Single-precision FP arithmetics */
+extern "C" float __aeabi_fadd(float a, float b);   // OP_ADD_FLOAT[_2ADDR]
+extern "C" float __aeabi_fsub(float a, float b);   // OP_SUB_FLOAT[_2ADDR]
+extern "C" float __aeabi_fdiv(float a, float b);   // OP_DIV_FLOAT[_2ADDR]
+extern "C" float __aeabi_fmul(float a, float b);   // OP_MUL_FLOAT[_2ADDR]
+extern "C" float fmodf(float a, float b);          // OP_REM_FLOAT[_2ADDR]
+
+/* Double-precision FP arithmetics */
+extern "C" double __aeabi_dadd(double a, double b); // OP_ADD_DOUBLE[_2ADDR]
+extern "C" double __aeabi_dsub(double a, double b); // OP_SUB_DOUBLE[_2ADDR]
+extern "C" double __aeabi_ddiv(double a, double b); // OP_DIV_DOUBLE[_2ADDR]
+extern "C" double __aeabi_dmul(double a, double b); // OP_MUL_DOUBLE[_2ADDR]
+extern "C" double fmod(double a, double b);         // OP_REM_DOUBLE[_2ADDR]
+
+/* Integer arithmetics */
+extern "C" int __aeabi_idivmod(int op1, int op2);  // OP_REM_INT[_2ADDR|_LIT8|_LIT16]
+extern "C" int __aeabi_idiv(int op1, int op2);     // OP_DIV_INT[_2ADDR|_LIT8|_LIT16]
+
+/* Long long arithmetics - OP_REM_LONG[_2ADDR] & OP_DIV_LONG[_2ADDR] */
+extern "C" long long __aeabi_ldivmod(long long op1, long long op2);
+
+/* Originally declared in Sync.h */
+bool dvmUnlockObject(struct Thread* self, struct Object* obj); //OP_MONITOR_EXIT
+void dvmLockObject(struct Thread* self, struct Object* obj); //OP_MONITOR_ENTER
+
+/* Originally declared in oo/TypeCheck.h */
+bool dvmCanPutArrayElement(const ClassObject* elemClass,   // OP_APUT_OBJECT
+                           const ClassObject* arrayClass);
+int dvmInstanceofNonTrivial(const ClassObject* instance,   // OP_CHECK_CAST &&
+                            const ClassObject* clazz);     // OP_INSTANCE_OF
+
+/* Originally declared in oo/Array.h */
+ArrayObject* dvmAllocArrayByClass(ClassObject* arrayClass, // OP_NEW_ARRAY
+                                  size_t length, int allocFlags);
+/* Originally declared in alloc/Alloc.h */
+Object* dvmAllocObject(ClassObject* clazz, int flags);  // OP_NEW_INSTANCE
+
+/*
+ * The following functions are invoked through the compiler templates (declared
+ * in compiler/template/armv5te/footer.S:
+ *
+ *      __aeabi_cdcmple         // CMPG_DOUBLE
+ *      __aeabi_cfcmple         // CMPG_FLOAT
+ *      dvmLockObject           // MONITOR_ENTER
+ */
+
+/* from mterp/common/FindInterface.h */
+Method* dvmFindInterfaceMethodInCache(ClassObject* thisClass,
+    u4 methodIdx, const Method* method, DvmDex* methodClassDex);
+
+/* from interp/Interp.cpp */
+bool dvmInterpHandleFillArrayData(ArrayObject* arrayObj, const u2* arrayData);
+
+#endif  // ART_SRC_COMPILER_CODEGEN_ARM_CALLOUT_HELPER_H_