From 9fce8800c4a127c2a08a9d7bdf373d6b81dac068 Mon Sep 17 00:00:00 2001
From: knn-k <konno@jp.ibm.com>
Date: Fri, 25 Jan 2019 14:50:48 +0900
Subject: [PATCH] AArch64: Add support for AArch64 in JIT-related files

This commit adds support for AArch64 in JIT-related files.

Signed-off-by: knn-k <konno@jp.ibm.com>
---
 runtime/codert_vm/cnathelp.cpp            |  7 +++
 runtime/compiler/module.xml               |  4 +-
 runtime/compiler/runtime/MethodMetaData.c |  5 +-
 runtime/ddr/jitflagsddr.c                 |  9 ++-
 runtime/ddr/module.xml                    |  9 ++-
 runtime/jilgen/jilconsts.c                |  8 ++-
 runtime/jilgen/module.xml                 |  9 ++-
 runtime/oti/JITInterface.hpp              | 23 ++++++-
 runtime/oti/j9nonbuilder.h                | 64 ++++++++++++++++---
 runtime/oti/stackwalk.h                   | 29 ++++++++-
 runtime/util/jitregs.c                    | 76 ++++++++++++++++++++++-
 11 files changed, 226 insertions(+), 17 deletions(-)

diff --git a/runtime/codert_vm/cnathelp.cpp b/runtime/codert_vm/cnathelp.cpp
index f2ac8a1b39..713748d2a8 100644
--- a/runtime/codert_vm/cnathelp.cpp
+++ b/runtime/codert_vm/cnathelp.cpp
@@ -247,6 +247,13 @@ J9_EXTERN_BUILDER_SYMBOL(icallVMprJavaSendStatic1);
 #define JIT_LO_U64_RETURN_REGISTER gpr.numbered[0]
 #define JIT_HI_U64_RETURN_REGISTER gpr.numbered[1]
 
+#elif defined(J9VM_ARCH_AARCH64)
+
+#define JIT_STACK_OVERFLOW_SIZE_REGISTER gpr.numbered[18] // TODO: determine which register to use
+#define JIT_UDATA_RETURN_VALUE_REGISTER gpr.numbered[0]
+#define JIT_RETURN_ADDRESS_REGISTER gpr.numbered[30]
+#define JIT_J2I_METHOD_REGISTER gpr.numbered[0]
+
 #else
 #error UNKNOWN PROCESSOR
 #endif
diff --git a/runtime/compiler/module.xml b/runtime/compiler/module.xml
index a9c7802268..f3c159db8b 100644
--- a/runtime/compiler/module.xml
+++ b/runtime/compiler/module.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-Copyright (c) 2000, 2018 IBM Corp. and others
+Copyright (c) 2000, 2019 IBM Corp. and others
 
 This program and the accompanying materials are made available under
 the terms of the Eclipse Public License 2.0 which accompanies this
@@ -23,6 +23,8 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 <module>
 	<artifact type="target" name="j9jitlauncher">
 		<include-if condition="spec.flags.interp_nativeSupport"/>
+		<!-- TODO: Build of aarch64 JIT is disabled for the time being -->
+		<exclude-if condition="spec.linux_aarch64.*" />
 		<phase>jit j2se</phase>
 
 		<dependencies>
diff --git a/runtime/compiler/runtime/MethodMetaData.c b/runtime/compiler/runtime/MethodMetaData.c
index 40795c4367..0f8e663566 100644
--- a/runtime/compiler/runtime/MethodMetaData.c
+++ b/runtime/compiler/runtime/MethodMetaData.c
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2000, 2018 IBM Corp. and others
+ * Copyright (c) 2000, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -1746,6 +1746,9 @@ void jitAddSpilledRegisters(J9StackWalkState * walkState, void * stackMap)
          }
       while (savedGPRs != 0);
       }
+#elif defined(TR_HOST_ARM64)
+   // TODO: Implement this
+   assert(0);
 #else
 #error Unknown TR_HOST type
 #endif
diff --git a/runtime/ddr/jitflagsddr.c b/runtime/ddr/jitflagsddr.c
index 740670cdc4..4099cd5636 100644
--- a/runtime/ddr/jitflagsddr.c
+++ b/runtime/ddr/jitflagsddr.c
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 1991, 2018 IBM Corp. and others
+ * Copyright (c) 1991, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -36,6 +36,13 @@ J9DDRConstantTableBegin(TRBuildFlags)
 #endif
 J9DDRConstantTableEntryWithValue("host_ARM", host_ARM)
 
+#if defined(TR_HOST_AARCH64)
+	#define host_AARCH64 1
+#else
+	#define host_AARCH64 0
+#endif
+J9DDRConstantTableEntryWithValue("host_AARCH64", host_AARCH64)
+
 #if defined(TR_HOST_IA32)
 	#define host_IA32 1
 #else
diff --git a/runtime/ddr/module.xml b/runtime/ddr/module.xml
index 5236a69615..0be5f097bf 100644
--- a/runtime/ddr/module.xml
+++ b/runtime/ddr/module.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-Copyright (c) 2010, 2018 IBM Corp. and others
+Copyright (c) 2010, 2019 IBM Corp. and others
 
 This program and the accompanying materials are made available under
 the terms of the Eclipse Public License 2.0 which accompanies this
@@ -277,6 +277,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 		<makefilestubs>
 			<makefilestub data="UMA_EXE_POSTFIX_FLAGS+=-static">
 				<include-if condition="spec.linux_arm.*"/>
+				<include-if condition="spec.linux_aarch64.*" />
 			</makefilestub>
 			<makefilestub data="UMA_TREAT_WARNINGS_AS_ERRORS=1"/>
 			<makefilestub data="include ddr_cpp_headers.mk"/>
@@ -294,9 +295,11 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 
 			<library name="j9thrstatic" type="external">
 				<include-if condition="spec.linux_arm.*"/>
+				<include-if condition="spec.linux_aarch64.*" />
 			</library>
 			<library name="j9thr">
 				<exclude-if condition="spec.linux_arm.*"/>
+				<exclude-if condition="spec.linux_aarch64.*" />
 			</library>
 			<library name="j9portautoblob"/>
 			<library name="j9ddr_cppewautoblob"/>
@@ -345,11 +348,15 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 		<commands>
 			<command line="cd $(UMA_PATH_TO_ROOT) &amp;&amp; ./j9ddrgen" type="all">
 				<exclude-if condition="spec.linux_arm.*"/>
+				<exclude-if condition="spec.linux_aarch64.*"/>
 				<exclude-if condition="spec.linux_ztpf.*"/>
 			</command>
 			<command line="cd $(UMA_PATH_TO_ROOT) &amp;&amp; qemu-arm -r '9' ./j9ddrgen" type="all">
 				<include-if condition="spec.linux_arm.*"/>
 			</command>
+			<command line="cd $(UMA_PATH_TO_ROOT) &amp;&amp; qemu-aarch64 -r '9' ./j9ddrgen" type="all">
+				<include-if condition="spec.linux_aarch64.*"/>
+			</command>
 			<command line="cd $(UMA_PATH_TO_ROOT); if [ -x ../build_j9ddrgen.sh ] &amp;&amp; [ ! -e ../j9ddrgen.completed ] ; then ../build_j9ddrgen.sh ; fi" type="all">
 				<include-if condition="spec.linux_ztpf.*"/>
 			</command>
diff --git a/runtime/jilgen/jilconsts.c b/runtime/jilgen/jilconsts.c
index 8343bd1dd4..3dba7273a4 100644
--- a/runtime/jilgen/jilconsts.c
+++ b/runtime/jilgen/jilconsts.c
@@ -365,7 +365,13 @@ writeConstants(OMRPortLibrary *OMRPORTLIB, IDATA fd)
 			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_preservedFPRs", offsetof(J9CInterpreterStackFrame, preservedFPRs)) |
 			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_jitGPRs", offsetof(J9CInterpreterStackFrame, jitGPRs)) |
 			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_jitFPRs", offsetof(J9CInterpreterStackFrame, jitFPRs)) |
-#elif defined(J9VM_ARCH_X86) /* J9VM_ARCH_ARM */
+#elif defined(J9VM_ARCH_AARCH64) /* J9VM_ARCH_ARM */
+			/* AARCH64 */
+			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_preservedGPRs", offsetof(J9CInterpreterStackFrame, preservedGPRs)) |
+			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_preservedFPRs", offsetof(J9CInterpreterStackFrame, preservedFPRs)) |
+			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_jitGPRs", offsetof(J9CInterpreterStackFrame, jitGPRs)) |
+			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_jitFPRs", offsetof(J9CInterpreterStackFrame, jitFPRs)) |
+#elif defined(J9VM_ARCH_X86) /* J9VM_ARCH_AARCH64 */
 			/* x86 */
 			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_vmStruct", offsetof(J9CInterpreterStackFrame, vmStruct)) |
 			writeConstant(OMRPORTLIB, fd, "J9TR_cframe_machineBP", offsetof(J9CInterpreterStackFrame, machineBP)) |
diff --git a/runtime/jilgen/module.xml b/runtime/jilgen/module.xml
index 828772a1e3..39e653b035 100644
--- a/runtime/jilgen/module.xml
+++ b/runtime/jilgen/module.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!--
-Copyright (c) 2017, 2018 IBM Corp. and others
+Copyright (c) 2017, 2019 IBM Corp. and others
 
 This program and the accompanying materials are made available under
 the terms of the Eclipse Public License 2.0 which accompanies this
@@ -34,6 +34,7 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 		<makefilestubs>
 			<makefilestub data="UMA_EXE_POSTFIX_FLAGS+=-static">
 				<include-if condition="spec.linux_arm.*" />
+				<include-if condition="spec.linux_aarch64.*" />
 			</makefilestub>
 			<makefilestub data="UMA_TREAT_WARNINGS_AS_ERRORS=1"/>
 		</makefilestubs>
@@ -50,9 +51,11 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 
 			<library name="j9thrstatic" type="external">
 				<include-if condition="spec.linux_arm.*" />
+				<include-if condition="spec.linux_aarch64.*" />
 			</library>
 			<library name="j9thr">
 				<exclude-if condition="spec.linux_arm.*" />
+				<exclude-if condition="spec.linux_aarch64.*" />
 			</library>
 			<library name="j9hashtable" type="external"/>
 			<library name="j9avl" type="external"/>
@@ -96,11 +99,15 @@ SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH Classpath-excepti
 		<commands>
 			<command line="cd $(UMA_PATH_TO_ROOT) &amp;&amp; ./constgen" type="all">
 				<exclude-if condition="spec.linux_arm.*"/>
+				<exclude-if condition="spec.linux_aarch64.*"/>
 				<exclude-if condition="spec.linux_ztpf.*"/>
 			</command>
 			<command line="cd $(UMA_PATH_TO_ROOT) &amp;&amp; qemu-arm -r '9' ./constgen" type="all">
 				<include-if condition="spec.linux_arm.*"/>
 			</command>
+			<command line="cd $(UMA_PATH_TO_ROOT) &amp;&amp; qemu-aarch64 -r '9' ./constgen" type="all">
+				<include-if condition="spec.linux_aarch64.*"/>
+			</command>
 			<command line="cd $(UMA_PATH_TO_ROOT); if [ -x ../build_constgen.sh ] &amp;&amp; [ ! -e ../constgen.completed ] ; then ../build_constgen.sh ; fi" type="all">
 				<include-if condition="spec.linux_ztpf.*"/>
 			</command>
diff --git a/runtime/oti/JITInterface.hpp b/runtime/oti/JITInterface.hpp
index f9e4e38741..64b0709128 100644
--- a/runtime/oti/JITInterface.hpp
+++ b/runtime/oti/JITInterface.hpp
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 1991, 2014 IBM Corp. and others
+ * Copyright (c) 1991, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -25,6 +25,11 @@
 
 #include "j9port.h"
 
+/* TODO: Implement jitVTableIndex() to remove this #include */
+#if defined(J9VM_ARCH_AARCH64)
+#include "assert.h"
+#endif
+
 extern "C" {
 
 #if defined(J9VM_ARCH_X86)
@@ -114,6 +119,15 @@ typedef struct {
 	U_64 fpr[16];
 } J9JITRegisters;
 
+#elif defined(J9VM_ARCH_AARCH64)
+
+typedef struct {
+	union {
+		UDATA numbered[32];
+	} gpr;
+	U_64 fpr[32];
+} J9JITRegisters;
+
 #else
 #error UNKNOWN PROCESSOR
 #endif
@@ -177,6 +191,9 @@ class VM_JITInterface
 			/* Virtual - unsigned offset is in the low 12 bits, assume the sign bit is set (i.e. the offset is always negative) */
 			jitVTableIndex = 0 - (instruction & 0x00000FFF);
 		}
+#elif defined(J9VM_ARCH_AARCH64)
+		/* TODO: Implement this */
+		assert(0);
 #elif defined(J9VM_ARCH_S390)
 		/* The vtable index is always in the register */
 #else
@@ -194,6 +211,8 @@ class VM_JITInterface
 		return (void*)((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->lr;
 #elif defined(J9VM_ARCH_ARM)
 		return (void*)((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->gpr.numbered[14];
+#elif defined(J9VM_ARCH_AARCH64)
+		return (void*)((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->gpr.numbered[30]; // LR
 #elif defined(J9VM_ARCH_S390)
 		return (void*)((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->gpr.numbered[14];
 #else
@@ -210,6 +229,8 @@ class VM_JITInterface
 		((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->lr = (UDATA)returnAddress;
 #elif defined(J9VM_ARCH_ARM)
 		((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->gpr.numbered[14] = (UDATA)returnAddress;
+#elif defined(J9VM_ARCH_AARCH64)
+		((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->gpr.numbered[30] = (UDATA)returnAddress; // LR
 #elif defined(J9VM_ARCH_S390)
 		((J9JITRegisters*)vmThread->entryLocalStorage->jitGlobalStorageBase)->gpr.numbered[14] = (UDATA)returnAddress;
 #else
diff --git a/runtime/oti/j9nonbuilder.h b/runtime/oti/j9nonbuilder.h
index c3af813ef8..4f6feb8152 100644
--- a/runtime/oti/j9nonbuilder.h
+++ b/runtime/oti/j9nonbuilder.h
@@ -2356,7 +2356,20 @@ typedef struct J9WalkStackFramesAndSlotsStorage {
 	UDATA* jit_r30;
 	UDATA* jit_r31;
 #endif /* !J9VM_ENV_DATA64 */
-#elif defined(J9VM_ARCH_ARM) /* J9VM_ARCH_POWER */
+#elif defined(J9VM_ARCH_ARM) /* J9VM_ARCH_S390 */
+	UDATA* jit_r0;
+	UDATA* jit_r1;
+	UDATA* jit_r2;
+	UDATA* jit_r3;
+	UDATA* jit_r4;
+	UDATA* jit_r5;
+	UDATA* jit_r6;
+	UDATA* jit_r7;
+	UDATA* jit_r8;
+	UDATA* jit_r9;
+	UDATA* jit_r10;
+	UDATA* jit_r11;
+#elif defined(J9VM_ARCH_AARCH64) /* J9VM_ARCH_ARM */
 	UDATA* jit_r0;
 	UDATA* jit_r1;
 	UDATA* jit_r2;
@@ -2369,9 +2382,29 @@ typedef struct J9WalkStackFramesAndSlotsStorage {
 	UDATA* jit_r9;
 	UDATA* jit_r10;
 	UDATA* jit_r11;
-#else /* J9VM_ARCH_ARM */
+	UDATA* jit_r12;
+	UDATA* jit_r13;
+	UDATA* jit_r14;
+	UDATA* jit_r15;
+	UDATA* jit_r16;
+	UDATA* jit_r17;
+	UDATA* jit_r18;
+	UDATA* jit_r19;
+	UDATA* jit_r20;
+	UDATA* jit_r21;
+	UDATA* jit_r22;
+	UDATA* jit_r23;
+	UDATA* jit_r24;
+	UDATA* jit_r25;
+	UDATA* jit_r26;
+	UDATA* jit_r27;
+	UDATA* jit_r28;
+	UDATA* jit_r29;
+	UDATA* jit_r30;
+	UDATA* jit_r31;
+#else /* J9VM_ARCH_AARCH64 */
 #error Unknown processor architecture
-#endif /* J9VM_ARCH_ARM */
+#endif /* J9VM_ARCH_AARCH64 */
 } J9WalkStackFramesAndSlotsStorage;
 
 typedef struct J9I2JState {
@@ -2574,13 +2607,25 @@ typedef struct J9SFJ2IFrame {
 	UDATA jit_r8;
 	UDATA jit_r7;
 	UDATA jit_r6;
-#elif defined(J9VM_ARCH_ARM)
+#elif defined(J9VM_ARCH_ARM) /* J9VM_ARCH_S390 */
 	UDATA jit_r10;
 	UDATA jit_r9;
 	UDATA jit_r6;
-#else /* J9VM_ARCH_ARM */
+#elif defined(J9VM_ARCH_AARCH64) /* J9VM_ARCH_ARM */
+	UDATA jit_r18;
+	UDATA jit_r19;
+	UDATA jit_r20;
+	UDATA jit_r21;
+	UDATA jit_r22;
+	UDATA jit_r23;
+	UDATA jit_r24;
+	UDATA jit_r25;
+	UDATA jit_r26;
+	UDATA jit_r27;
+	UDATA jit_r28;
+#else /* J9VM_ARCH_AARCH64 */
 #error Unknown processor architecture
-#endif /* J9VM_ARCH_ARM */
+#endif /* J9VM_ARCH_AARCH64 */
 	UDATA specialFrameFlags;
 	void* exitPoint;
 	U_8* returnAddress;
@@ -5562,7 +5607,12 @@ typedef struct J9CInterpreterStackFrame {
 	UDATA jitGPRs[16]; /* r0-r15 */
 	U_8 jitFPRs[16 * 8]; /* fpr0-15 */
 #endif /* J9VM_ENV_DATA64 */
-#elif defined(J9VM_ARCH_X86) /* J9VM_ARCH_ARM */
+#elif defined(J9VM_ARCH_AARCH64) /* J9VM_ARCH_ARM */
+	UDATA preservedGPRs[12]; /* x19-x30 */
+	U_8 preservedFPRs[8 * 8]; /* v8-15 */
+	UDATA jitGPRs[32]; /* x0-x31 */
+	U_8 jitFPRs[32 * 8]; /* v0-v31 */
+#elif defined(J9VM_ARCH_X86) /* J9VM_ARCH_AARCH64 */
 #if defined(J9VM_ENV_DATA64) && defined(WIN32)
 	UDATA arguments[4]; /* outgoing arguments shadow */
 #endif /*J9VM_ENV_DATA64 && WIN32*/
diff --git a/runtime/oti/stackwalk.h b/runtime/oti/stackwalk.h
index 4c15f26960..f611322286 100644
--- a/runtime/oti/stackwalk.h
+++ b/runtime/oti/stackwalk.h
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 1991, 2018 IBM Corp. and others
+ * Copyright (c) 1991, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -340,6 +340,33 @@ extern "C" {
 #define J9SW_LOWEST_MEMORY_PRESERVED_REGISTER jit_r10
 #define J9SW_JIT_CALLEE_PRESERVED_SIZE 3
 
+#elif defined(J9VM_ARCH_AARCH64)
+
+/* AArch64 */
+
+/* @ddr_namespace: map_to_type=J9StackWalkFlags */
+
+#define J9SW_JIT_FLOATS_PASSED_AS_DOUBLES
+#undef  J9SW_JIT_HELPERS_PASS_PARAMETERS_ON_STACK
+#undef  J9SW_NEEDS_JIT_2_INTERP_CALLEE_ARG_POP
+#define J9SW_NEEDS_JIT_2_INTERP_THUNKS
+#define J9SW_PARAMETERS_IN_REGISTERS
+#define J9SW_REGISTER_MAP_WALK_REGISTERS_LOW_TO_HIGH
+
+/* @ddr_namespace: map_to_type=J9StackWalkConstants */
+
+#define J9SW_ARGUMENT_REGISTER_COUNT 0x8
+#define J9SW_JIT_FLOAT_ARGUMENT_REGISTER_COUNT 0x8
+#define JIT_RESOLVE_PARM(parmNumber) (walkState->walkedEntryLocalStorage->jitGlobalStorageBase[jitArgumentRegisterNumbers[(parmNumber) - 1]])
+#define J9SW_JIT_STACK_SLOTS_USED_BY_CALL 0x0
+#define J9SW_POTENTIAL_SAVED_REGISTERS 0x20
+#define J9SW_REGISTER_MAP_MASK 0xFFFFFFFF
+#define J9SW_JIT_FIRST_RESOLVE_PARM_REGISTER 0x0
+#undef  J9SW_JIT_LOOKUP_INTERFACE_RESOLVE_OFFSET_TO_SAVED_RECEIVER
+#undef  J9SW_JIT_VIRTUAL_METHOD_RESOLVE_OFFSET_TO_SAVED_RECEIVER
+#define J9SW_LOWEST_MEMORY_PRESERVED_REGISTER jit_r18
+#define J9SW_JIT_CALLEE_PRESERVED_SIZE 11
+
 #else
 #error Unsupported platform
 #endif
diff --git a/runtime/util/jitregs.c b/runtime/util/jitregs.c
index 4af3e9af8b..9d339fb025 100644
--- a/runtime/util/jitregs.c
+++ b/runtime/util/jitregs.c
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2016, 2016 IBM Corp. and others
+ * Copyright (c) 2016, 2019 IBM Corp. and others
  *
  * This program and the accompanying materials are made available under
  * the terms of the Eclipse Public License 2.0 which accompanies this
@@ -329,7 +329,79 @@ U_8 jitCalleeSavedRegisterList[] = {
 	0x06,	/* jit_r6 */
 };
 
-#else /* J9VM_ARCH_ARM */
+#elif defined(J9VM_ARCH_AARCH64) /* J9VM_ARCH_ARM */
+
+U_8 jitArgumentRegisterNumbers[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+U_8 jitFloatArgumentRegisterNumbers[] = { 0, 1, 2, 3, 4, 5, 6, 7 };
+char * jitRegisterNames[] = {
+	"jit_r0",
+	"jit_r1",
+	"jit_r2",
+	"jit_r3",
+	"jit_r4",
+	"jit_r5",
+	"jit_r6",
+	"jit_r7",
+	"jit_r8",
+	"jit_r9",
+	"jit_r10",
+	"jit_r11",
+	"jit_r12",
+	"jit_r13",
+	"jit_r14",
+	"jit_r15",
+	"jit_r16",
+	"jit_r17",
+	"jit_r18",
+	"jit_r19",
+	"jit_r20",
+	"jit_r21",
+	"jit_r22",
+	"jit_r23",
+	"jit_r24",
+	"jit_r25",
+	"jit_r26",
+	"jit_r27",
+	"jit_r28",
+	"jit_r29",
+	"jit_r30",
+	"jit_r31"
+};
+U_8 jitCalleeDestroyedRegisterList[] = {
+	0x00,	/* jit_r0 */
+	0x01,	/* jit_r1 */
+	0x02,	/* jit_r2 */
+	0x03,	/* jit_r3 */
+	0x04,	/* jit_r4 */
+	0x05,	/* jit_r5 */
+	0x06,	/* jit_r6 */
+	0x07,	/* jit_r7 */
+	0x08,	/* jit_r8 */
+	0x09,	/* jit_r9 */
+	0x0A,	/* jit_r10 */
+	0x0B,	/* jit_r11 */
+	0x0C,	/* jit_r12 */
+	0x0D,	/* jit_r13 */
+	0x0E,	/* jit_r14 */
+	0x0F,	/* jit_r15 */
+};
+U_8 jitCalleeSavedRegisterList[] = {
+	0x10,	/* jit_r16 */
+	0x11,	/* jit_r17 */
+	0x12,	/* jit_r18 */
+	0x13,	/* jit_r19 */
+	0x14,	/* jit_r20 */
+	0x15,	/* jit_r21 */
+	0x16,	/* jit_r22 */
+	0x17,	/* jit_r23 */
+	0x18,	/* jit_r24 */
+	0x19,	/* jit_r25 */
+	0x1A,	/* jit_r26 */
+	0x1B,	/* jit_r27 */
+	0x1C	/* jit_r28 */
+};
+
+#else /* J9VM_ARCH_AARCH64 */
 
 #error Unsupported platform