--- /dev/null	2019-11-25 13:54:31.704988400 +0900
+++ new/src/jdk.hotspot.agent/linux/native/libsaproc/DwarfParser.cpp	2019-11-25 14:00:59.749470700 +0900
@@ -0,0 +1,227 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019, NTT DATA.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include <jni.h>
+
+#include "dwarf.hpp"
+#include "libproc.h"
+
+#define CHECK_EXCEPTION if (env->ExceptionOccurred()) { return; }
+
+static jfieldID p_dwarf_context_ID = 0;
+static jint sa_RAX = -1;
+static jint sa_RDX = -1;
+static jint sa_RCX = -1;
+static jint sa_RBX = -1;
+static jint sa_RSI = -1;
+static jint sa_RDI = -1;
+static jint sa_RBP = -1;
+static jint sa_RSP = -1;
+static jint sa_R8  = -1;
+static jint sa_R9  = -1;
+static jint sa_R10 = -1;
+static jint sa_R11 = -1;
+static jint sa_R12 = -1;
+static jint sa_R13 = -1;
+static jint sa_R14 = -1;
+static jint sa_R15 = -1;
+
+static jlong get_dwarf_context(JNIEnv *env, jobject obj) {
+  return env->GetLongField(obj, p_dwarf_context_ID);
+}
+
+#define SET_REG(env, reg, reg_cls) \
+  jfieldID reg##_ID = env->GetStaticFieldID(reg_cls, #reg, "I"); \
+  CHECK_EXCEPTION \
+  sa_##reg = env->GetStaticIntField(reg_cls, reg##_ID); \
+  CHECK_EXCEPTION
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    init0
+ * Signature: ()V
+ */
+extern "C"
+JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_init0
+  (JNIEnv *env, jclass this_cls) {
+  jclass cls = env->FindClass("sun/jvm/hotspot/debugger/linux/amd64/DwarfParser");
+  CHECK_EXCEPTION
+  p_dwarf_context_ID = env->GetFieldID(cls, "p_dwarf_context", "J");
+  CHECK_EXCEPTION
+
+  jclass reg_cls = env->FindClass("sun/jvm/hotspot/debugger/amd64/AMD64ThreadContext");
+  CHECK_EXCEPTION
+  SET_REG(env, RAX, reg_cls);
+  SET_REG(env, RDX, reg_cls);
+  SET_REG(env, RCX, reg_cls);
+  SET_REG(env, RBX, reg_cls);
+  SET_REG(env, RSI, reg_cls);
+  SET_REG(env, RDI, reg_cls);
+  SET_REG(env, RBP, reg_cls);
+  SET_REG(env, RSP, reg_cls);
+  SET_REG(env, R8,  reg_cls);
+  SET_REG(env, R9,  reg_cls);
+  SET_REG(env, R10, reg_cls);
+  SET_REG(env, R11, reg_cls);
+  SET_REG(env, R12, reg_cls);
+  SET_REG(env, R13, reg_cls);
+  SET_REG(env, R14, reg_cls);
+  SET_REG(env, R15, reg_cls);
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    createDwarfContext
+ * Signature: (J)J
+ */
+extern "C"
+JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_createDwarfContext
+  (JNIEnv *env, jclass this_cls, jlong lib) {
+  jlong result = 0L;
+
+  DwarfParser *parser = new DwarfParser(reinterpret_cast<lib_info *>(lib));
+  if (!parser->can_parsable()) {
+    jclass ex_cls = env->FindClass("sun/jvm/hotspot/debugger/DebuggerException");
+    env->ThrowNew(ex_cls, "DWARF not found");
+    return 0L;
+  }
+
+  return reinterpret_cast<jlong>(parser);
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    destroyDwarfContext
+ * Signature: (J)V
+ */
+extern "C"
+JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_destroyDwarfContext
+  (JNIEnv *env, jclass this_cls, jlong context) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(context);
+  delete parser;
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    isIn0
+ * Signature: (J)Z
+ */
+extern "C"
+JNIEXPORT jboolean JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_isIn0
+  (JNIEnv *env, jobject this_obj, jlong pc) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  return static_cast<jboolean>(parser->is_in(pc));
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    processDwarf0
+ * Signature: (J)V
+ */
+extern "C"
+JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_processDwarf0
+  (JNIEnv *env, jobject this_obj, jlong pc) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  parser->process_dwarf(pc);
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    getCFARegister
+ * Signature: ()I
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_getCFARegister
+  (JNIEnv *env, jobject this_obj) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  switch (parser->get_cfa_register()) {
+    case RAX: return sa_RAX;
+    case RDX: return sa_RDX;
+    case RCX: return sa_RCX;
+    case RBX: return sa_RBX;
+    case RSI: return sa_RSI;
+    case RDI: return sa_RDI;
+    case RBP: return sa_RBP;
+    case RSP: return sa_RSP;
+    case R8:  return sa_R8;
+    case R9:  return sa_R9;
+    case R10: return sa_R10;
+    case R11: return sa_R11;
+    case R12: return sa_R12;
+    case R13: return sa_R13;
+    case R14: return sa_R14;
+    case R15: return sa_R15;
+    default:  return -1;
+  }
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    getCFAOffset
+ * Signature: ()I
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_getCFAOffset
+  (JNIEnv *env, jobject this_obj) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  return parser->get_cfa_offset();
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    getReturnAddressOffsetFromCFA
+ * Signature: ()I
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_getReturnAddressOffsetFromCFA
+  (JNIEnv *env, jobject this_obj) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  return parser->get_ra_cfa_offset();
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    getBasePointerOffsetFromCFA
+ * Signature: ()I
+ */
+extern "C"
+JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_getBasePointerOffsetFromCFA
+  (JNIEnv *env, jobject this_obj) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  return parser->get_bp_cfa_offset();
+}
+
+/*
+ * Class:     sun_jvm_hotspot_debugger_linux_amd64_DwarfParser
+ * Method:    isBPOffsetAvailable
+ * Signature: ()Z
+ */
+extern "C"
+JNIEXPORT jboolean JNICALL Java_sun_jvm_hotspot_debugger_linux_amd64_DwarfParser_isBPOffsetAvailable
+  (JNIEnv *env, jobject this_obj) {
+  DwarfParser *parser = reinterpret_cast<DwarfParser *>(get_dwarf_context(env, this_obj));
+  return parser->is_bp_offset_available();
+}
+