Begins work on ARM64, first assembler test.

runtime/vm/vm_sources.gypi

Index: runtime/vm/vm_sources.gypi
===================================================================
--- runtime/vm/vm_sources.gypi	(revision 34648)
+++ runtime/vm/vm_sources.gypi	(working copy)
@@ -14,6 +14,9 @@
     'assembler_arm.cc',
     'assembler_arm.h',
     'assembler_arm_test.cc',
+    'assembler_arm64.cc',
+    'assembler_arm64.h',
+    'assembler_arm64_test.cc',
     'assembler_ia32.cc',
     'assembler_ia32.h',
     'assembler_ia32_test.cc',
@@ -77,6 +80,8 @@
     'code_patcher.h',
     'code_patcher_arm.cc',
     'code_patcher_arm_test.cc',
+    'code_patcher_arm64.cc',
+    'code_patcher_arm64_test.cc',
     'code_patcher_ia32.cc',
     'code_patcher_ia32_test.cc',
     'code_patcher_mips.cc',
@@ -89,6 +94,7 @@
     'compiler_stats.h',
     'compiler_test.cc',
     'constants_arm.h',
+    'constants_arm64.h',
     'constants_ia32.h',
     'constants_mips.h',
     'constants_x64.h',
@@ -96,6 +102,7 @@
     'coverage.h',
     'cpu.h',
     'cpu_arm.cc',
+    'cpu_arm64.cc',
     'cpu_ia32.cc',
     'cpu_mips.cc',
     'cpu_test.cc',
@@ -124,6 +131,7 @@
     'debugger.h',
     'debugger_api_impl_test.cc',
     'debugger_arm.cc',
+    'debugger_arm64.cc',
     'debugger_ia32.cc',
     'debugger_mips.cc',
     'debugger_x64.cc',
@@ -137,6 +145,7 @@
     'disassembler.cc',
     'disassembler.h',
     'disassembler_arm.cc',
+    'disassembler_arm64.cc',
     'disassembler_ia32.cc',
     'disassembler_mips.cc',
     'disassembler_test.cc',
@@ -160,6 +169,7 @@
     'flow_graph_compiler.cc',
     'flow_graph_compiler.h',
     'flow_graph_compiler_arm.cc',
+    'flow_graph_compiler_arm64.cc',
     'flow_graph_compiler_ia32.cc',
     'flow_graph_compiler_mips.cc',
     'flow_graph_compiler_x64.cc',
@@ -199,6 +209,9 @@
     'instructions_arm.cc',
     'instructions_arm.h',
     'instructions_arm_test.cc',
+    'instructions_arm64.cc',
+    'instructions_arm64.h',
+    'instructions_arm64_test.cc',
     'instructions_ia32.cc',
     'instructions_ia32.h',
     'instructions_ia32_test.cc',
@@ -211,6 +224,7 @@
     'intermediate_language.cc',
     'intermediate_language.h',
     'intermediate_language_arm.cc',
+    'intermediate_language_arm64.cc',
     'intermediate_language_ia32.cc',
     'intermediate_language_mips.cc',
     'intermediate_language_test.cc',
@@ -218,6 +232,7 @@
     'intrinsifier.cc',
     'intrinsifier.h',
     'intrinsifier_arm.cc',
+    'intrinsifier_arm64.cc',
     'intrinsifier_ia32.cc',
     'intrinsifier_mips.cc',
     'intrinsifier_x64.cc',
@@ -258,6 +273,7 @@
     'object.cc',
     'object.h',
     'object_arm_test.cc',
+    'object_arm64_test.cc',
     'object_ia32_test.cc',
     'object_id_ring.cc',
     'object_id_ring.h',
@@ -300,6 +316,7 @@
     'reusable_handles.h',
     'runtime_entry.h',
     'runtime_entry_arm.cc',
+    'runtime_entry_arm64.cc',
     'runtime_entry_ia32.cc',
     'runtime_entry_mips.cc',
     'runtime_entry_test.cc',
@@ -323,6 +340,8 @@
     'simulator.h',
     'simulator_arm.cc',
     'simulator_arm.h',
+    'simulator_arm64.cc',
+    'simulator_arm64.h',
     'simulator_mips.cc',
     'simulator_mips.h',
     'snapshot.cc',
@@ -332,6 +351,7 @@
     'stack_frame.cc',
     'stack_frame.h',
     'stack_frame_arm.h',
+    'stack_frame_arm64.h',
     'stack_frame_ia32.h',
     'stack_frame_mips.h',
     'stack_frame_test.cc',
@@ -342,6 +362,8 @@
     'stub_code.h',
     'stub_code_arm.cc',
     'stub_code_arm_test.cc',
+    'stub_code_arm64.cc',
+    'stub_code_arm64_test.cc',
     'stub_code_ia32.cc',
     'stub_code_ia32_test.cc',
     'stub_code_mips.cc',