/*
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* Copyright (c) 1998, 2005, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "util.h"
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#include "StackFrameImpl.h"
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#include "inStream.h"
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#include "outStream.h"
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#include "threadControl.h"
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#include "FrameID.h"
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static jdwpError
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validateThreadFrame(jthread thread, FrameID frame)
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{
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jvmtiError error;
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jdwpError serror;
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jint count;
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error = threadControl_suspendCount(thread, &count);
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if ( error == JVMTI_ERROR_NONE ) {
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if ( count > 0 ) {
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serror = validateFrameID(thread, frame);
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} else {
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serror = JDWP_ERROR(THREAD_NOT_SUSPENDED);
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}
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} else {
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serror = map2jdwpError(error);
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}
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return serror;
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}
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static jdwpError
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writeVariableValue(JNIEnv *env, PacketOutputStream *out, jthread thread,
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FrameNumber fnum, jint slot, jbyte typeKey)
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{
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jvmtiError error;
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jvalue value;
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if (isObjectTag(typeKey)) {
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WITH_LOCAL_REFS(env, 1) {
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalObject)
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(gdata->jvmti, thread, fnum, slot, &value.l);
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if (error != JVMTI_ERROR_NONE) {
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outStream_setError(out, map2jdwpError(error));
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} else {
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(void)outStream_writeByte(out, specificTypeKey(env, value.l));
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(void)outStream_writeObjectRef(env, out, value.l);
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}
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} END_WITH_LOCAL_REFS(env);
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} else {
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/*
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* For primitive types, the type key is bounced back as is.
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*/
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(void)outStream_writeByte(out, typeKey);
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switch (typeKey) {
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case JDWP_TAG(BYTE): {
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jint intValue;
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt)
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(gdata->jvmti, thread, fnum, slot, &intValue);
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(void)outStream_writeByte(out, (jbyte)intValue);
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break;
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}
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case JDWP_TAG(CHAR): {
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jint intValue;
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt)
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(gdata->jvmti, thread, fnum, slot, &intValue);
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(void)outStream_writeChar(out, (jchar)intValue);
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break;
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}
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case JDWP_TAG(FLOAT):
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalFloat)
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(gdata->jvmti, thread, fnum, slot, &value.f);
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(void)outStream_writeFloat(out, value.f);
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break;
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case JDWP_TAG(DOUBLE):
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalDouble)
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(gdata->jvmti, thread, fnum, slot, &value.d);
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(void)outStream_writeDouble(out, value.d);
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break;
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case JDWP_TAG(INT):
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt)
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(gdata->jvmti, thread, fnum, slot, &value.i);
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(void)outStream_writeInt(out, value.i);
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break;
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case JDWP_TAG(LONG):
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalLong)
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(gdata->jvmti, thread, fnum, slot, &value.j);
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(void)outStream_writeLong(out, value.j);
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break;
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case JDWP_TAG(SHORT): {
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jint intValue;
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt)
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(gdata->jvmti, thread, fnum, slot, &intValue);
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(void)outStream_writeShort(out, (jshort)intValue);
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break;
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}
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case JDWP_TAG(BOOLEAN):{
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jint intValue;
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInt)
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(gdata->jvmti, thread, fnum, slot, &intValue);
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(void)outStream_writeBoolean(out, (jboolean)intValue);
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break;
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}
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default:
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return JDWP_ERROR(INVALID_TAG);
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}
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}
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return map2jdwpError(error);
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}
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static jdwpError
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readVariableValue(JNIEnv *env, PacketInputStream *in, jthread thread,
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FrameNumber fnum, jint slot, jbyte typeKey)
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{
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jvmtiError error;
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jvalue value;
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if (isObjectTag(typeKey)) {
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value.l = inStream_readObjectRef(env, in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalObject)
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(gdata->jvmti, thread, fnum, slot, value.l);
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} else {
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switch (typeKey) {
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case JDWP_TAG(BYTE):
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value.b = inStream_readByte(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt)
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(gdata->jvmti, thread, fnum, slot, value.b);
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break;
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case JDWP_TAG(CHAR):
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value.c = inStream_readChar(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt)
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(gdata->jvmti, thread, fnum, slot, value.c);
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break;
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case JDWP_TAG(FLOAT):
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value.f = inStream_readFloat(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalFloat)
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(gdata->jvmti, thread, fnum, slot, value.f);
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break;
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case JDWP_TAG(DOUBLE):
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value.d = inStream_readDouble(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalDouble)
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(gdata->jvmti, thread, fnum, slot, value.d);
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break;
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case JDWP_TAG(INT):
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value.i = inStream_readInt(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt)
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(gdata->jvmti, thread, fnum, slot, value.i);
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break;
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case JDWP_TAG(LONG):
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value.j = inStream_readLong(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalLong)
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(gdata->jvmti, thread, fnum, slot, value.j);
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break;
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case JDWP_TAG(SHORT):
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value.s = inStream_readShort(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt)
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(gdata->jvmti, thread, fnum, slot, value.s);
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break;
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case JDWP_TAG(BOOLEAN):
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value.z = inStream_readBoolean(in);
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error = JVMTI_FUNC_PTR(gdata->jvmti,SetLocalInt)
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(gdata->jvmti, thread, fnum, slot, value.z);
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break;
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default:
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return JDWP_ERROR(INVALID_TAG);
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}
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}
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return map2jdwpError(error);
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}
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static jboolean
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getValues(PacketInputStream *in, PacketOutputStream *out)
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{
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JNIEnv *env;
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int i;
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jdwpError serror;
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jthread thread;
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FrameID frame;
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jint variableCount;
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env = getEnv();
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thread = inStream_readThreadRef(env, in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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frame = inStream_readFrameID(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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variableCount = inStream_readInt(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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/*
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* Validate the frame id
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*/
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serror = validateThreadFrame(thread, frame);
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if (serror != JDWP_ERROR(NONE)) {
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outStream_setError(out, serror);
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return JNI_TRUE;
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}
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(void)outStream_writeInt(out, variableCount);
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for (i = 0; (i < variableCount) && !outStream_error(out); i++) {
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jint slot;
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jbyte typeKey;
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FrameNumber fnum;
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slot = inStream_readInt(in);
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if (inStream_error(in))
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break;
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typeKey = inStream_readByte(in);
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if (inStream_error(in))
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break;
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fnum = getFrameNumber(frame);
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serror = writeVariableValue(env, out, thread, fnum, slot, typeKey);
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if (serror != JDWP_ERROR(NONE)) {
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outStream_setError(out, serror);
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break;
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}
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}
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return JNI_TRUE;
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}
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static jboolean
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setValues(PacketInputStream *in, PacketOutputStream *out)
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{
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JNIEnv *env;
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jint i;
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jdwpError serror;
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jthread thread;
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FrameID frame;
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jint variableCount;
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env = getEnv();
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thread = inStream_readThreadRef(env, in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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frame = inStream_readFrameID(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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variableCount = inStream_readInt(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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/*
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* Validate the frame id
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*/
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serror = validateThreadFrame(thread, frame);
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if (serror != JDWP_ERROR(NONE)) {
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outStream_setError(out, serror);
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return JNI_TRUE;
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}
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for (i = 0; (i < variableCount) && !inStream_error(in); i++) {
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jint slot;
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jbyte typeKey;
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FrameNumber fnum;
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slot = inStream_readInt(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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typeKey = inStream_readByte(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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fnum = getFrameNumber(frame);
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serror = readVariableValue(env, in, thread, fnum, slot, typeKey);
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if (serror != JDWP_ERROR(NONE))
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break;
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}
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if (serror != JDWP_ERROR(NONE)) {
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outStream_setError(out, serror);
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}
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return JNI_TRUE;
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}
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static jboolean
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thisObject(PacketInputStream *in, PacketOutputStream *out)
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{
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JNIEnv *env;
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jdwpError serror;
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jthread thread;
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FrameID frame;
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env = getEnv();
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thread = inStream_readThreadRef(env, in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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frame = inStream_readFrameID(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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/*
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* Validate the frame id
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*/
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serror = validateThreadFrame(thread, frame);
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if (serror != JDWP_ERROR(NONE)) {
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outStream_setError(out, serror);
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return JNI_TRUE;
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}
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WITH_LOCAL_REFS(env, 2) {
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jvmtiError error;
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jmethodID method;
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jlocation location;
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FrameNumber fnum;
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/*
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* Find out if the given frame is for a static or native method.
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*/
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fnum = getFrameNumber(frame);
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetFrameLocation)
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(gdata->jvmti, thread, fnum, &method, &location);
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if (error == JVMTI_ERROR_NONE) {
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jint modifiers;
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error = methodModifiers(method, &modifiers);
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if (error == JVMTI_ERROR_NONE) {
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jobject this_object;
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/*
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* Return null for static or native methods; otherwise, the JVM
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* spec guarantees that "this" is in slot 0
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*/
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if (modifiers & (MOD_STATIC | MOD_NATIVE)) {
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this_object = NULL;
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(void)outStream_writeByte(out, specificTypeKey(env, this_object));
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(void)outStream_writeObjectRef(env, out, this_object);
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} else {
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// ANDROID-CHANGED: On ART 'this' is not always in register 0. We just use
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// GetLocalInstance in all cases.
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error = JVMTI_FUNC_PTR(gdata->jvmti,GetLocalInstance)
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(gdata->jvmti, thread, fnum, &this_object);
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if (error == JVMTI_ERROR_NONE) {
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(void)outStream_writeByte(out, specificTypeKey(env, this_object));
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(void)outStream_writeObjectRef(env, out, this_object);
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}
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}
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}
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}
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serror = map2jdwpError(error);
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} END_WITH_LOCAL_REFS(env);
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if (serror != JDWP_ERROR(NONE))
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outStream_setError(out, serror);
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return JNI_TRUE;
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}
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static jboolean
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popFrames(PacketInputStream *in, PacketOutputStream *out)
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{
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jvmtiError error;
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jdwpError serror;
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jthread thread;
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FrameID frame;
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FrameNumber fnum;
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thread = inStream_readThreadRef(getEnv(), in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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frame = inStream_readFrameID(in);
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if (inStream_error(in)) {
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return JNI_TRUE;
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}
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/*
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* Validate the frame id
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*/
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serror = validateThreadFrame(thread, frame);
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if (serror != JDWP_ERROR(NONE)) {
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outStream_setError(out, serror);
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return JNI_TRUE;
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}
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if (threadControl_isDebugThread(thread)) {
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outStream_setError(out, JDWP_ERROR(INVALID_THREAD));
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return JNI_TRUE;
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}
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fnum = getFrameNumber(frame);
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error = threadControl_popFrames(thread, fnum);
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if (error != JVMTI_ERROR_NONE) {
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serror = map2jdwpError(error);
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outStream_setError(out, serror);
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}
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return JNI_TRUE;
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}
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void *StackFrame_Cmds[] = { (void *)0x4
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,(void *)getValues
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,(void *)setValues
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,(void *)thisObject
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,(void *)popFrames
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};
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