mirror of
https://github.com/mozilla/gecko-dev.git
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592 lines
16 KiB
C++
592 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#include "JavaVM.h"
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#include "Debugger.h"
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#include "jvmdi.h"
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#include "NativeCodeCache.h"
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#include "Thread.h"
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extern "C" {
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static JVMDI_EventHook eventHook;
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/*
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* Return via "statusPtr" the status of the thread as one of
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* JVMDI_THREAD_STATUS_*.
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* Errors: JVMDI_ERROR_INVALID_THREAD, JVMDI_ERROR_NULL_POINTER
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetThreadStatus(JNIEnv * /* env */, jthread thread, jint *statusPtr)
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{
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if (statusPtr == NULL) {
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return JVMDI_ERROR_NULL_POINTER;
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}
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Thread::JavaThread *jt = (Thread::JavaThread *) thread;
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Thread *t = (Thread*)static_cast<int32>(jt->eetop);
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*statusPtr = t->getStatus();
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return JVMDI_ERROR_NONE;
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}
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/* Note: jvm.h has suspend/resume (which may be deprecated - as
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* Thread.suspend() has been). JVMDI version is different, as it
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* takes precautions to attempt to avoid deadlock. Also it
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* cannot be deprecated.
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*/
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/*
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* Suspend the specified thread.
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* Errors: JVMDI_ERROR_INVALID_THREAD, JVMDI_ERROR_THREAD_SUSPENDED,
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* JVMDI_ERROR_VM_DEAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SuspendThread(JNIEnv * /*env*/, jthread thread)
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{
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Thread::JavaThread *jt = (Thread::JavaThread *) thread;
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Thread *t = (Thread*)static_cast<int32>(jt->eetop);
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t->suspend();
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return JVMDI_ERROR_NONE;
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}
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/*
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* Resume the specified thread.
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* Errors: JVMDI_ERROR_INVALID_THREAD, JVMDI_ERROR_THREAD_NOT_SUSPENDED,
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* JVMDI_ERROR_VM_DEAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_ResumeThread(JNIEnv * /*env*/, jthread thread)
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{
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Thread::JavaThread *jt = (Thread::JavaThread *) thread;
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Thread *t = (Thread*)static_cast<int32>(jt->eetop);
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t->resume();
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return JVMDI_ERROR_NONE;
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}
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/*
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* If shouldStep is true cause the thread to generate a
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* JVMDI_EVENT_SINGLE_STEP event with each byte-code executed.
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* Errors: JVMDI_ERROR_INVALID_THREAD,
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* JVMDI_ERROR_THREAD_NOT_SUSPENDED (should suspension be a requirement?),
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* JVMDI_ERROR_VM_DEAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetSingleStep(JNIEnv * /*env*/, jthread thread, jboolean shouldStep)
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{
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Thread::JavaThread *jt = (Thread::JavaThread *) thread;
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jt->single_step = shouldStep;
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return JVMDI_ERROR_NONE;
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}
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/*
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* Thread Groups
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*/
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/*
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* Return in 'groupsPtr' an array of top-level thread groups (parentless
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* thread groups).
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* Note: array returned via 'groupsPtr' is allocated globally and must be
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* explictly freed with DeleteGlobalRef.
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* Errors: JVMDI_ERROR_NULL_POINTER, JVMDI_ERROR_OUT_OF_MEMORY
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetTopThreadGroups(JNIEnv * /*env*/, jobjectArray * /*groupsPtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return in 'threadsPtr' an array of the threads within the specified
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* thread group.
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* Note: array returned via 'threadsPtr' is allocated globally and must be
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* explictly freed with DeleteGlobalRef.
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* Errors: JVMDI_ERROR_INVALID_THREAD_GROUP, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_OUT_OF_MEMORY
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetGroupsThreads(JNIEnv * /*env*/, jthreadGroup /*group*/,
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jobjectArray * /*threadsPtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return in 'groupsPtr' an array of the thread groups within the
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* specified thread group.
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* Note: array returned via 'groupsPtr' is allocated globally and must be
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* explictly freed with DeleteGlobalRef.
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* Errors: JVMDI_ERROR_INVALID_THREAD_GROUP, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_OUT_OF_MEMORY
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetGroupsThreadGroups(JNIEnv * /*env*/, jthreadGroup /*group*/,
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jobjectArray * /*groupsPtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Suspend all threads recursively contained in the thread group,
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* except the specified threads.
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* If except is NULL suspend all threads in group.
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* Errors: JVMDI_ERROR_INVALID_THREAD_GROUP, JVMDI_ERROR_INVALID_THREAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SuspendThreadGroup(JNIEnv * /*env*/, jthreadGroup /*group*/,
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jobjectArray /*except*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Resume all threads (recursively) in the thread group, except the
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* specified threads. If except is NULL resume all threads in group.
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* Errors: JVMDI_ERROR_INVALID_THREAD_GROUP, JVMDI_ERROR_INVALID_THREAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_ResumeThreadGroup(JNIEnv * /*env*/, jthreadGroup /*group*/, jobjectArray /*except*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Stack access
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*/
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/*
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* Return via "framePtr" the frame ID for the current stack frame
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* of this thread. Thread must be suspended. Only Java and
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* Java native frames are returned. FrameIDs become invalid if
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* the frame is resumed.
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* Errors: JVMDI_ERROR_NO_MORE_FRAMES, JVMDI_ERROR_INVALID_THREAD,
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* JVMDI_ERROR_THREAD_NOT_SUSPENDED, JVMDI_ERROR_NULL_POINTER
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetCurrentFrame(JNIEnv * /*env*/, jthread /*thread*/, jframeID* framePtr)
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{
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if (framePtr == NULL) {
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return JVMDI_ERROR_NULL_POINTER;
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}
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return JVMDI_ERROR_NONE;
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}
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/*
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* Return via "framePtr" the frame ID for the stack frame that called
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* the specified frame. Only Java and Java native frames are returned.
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* Errors: JVMDI_ERROR_NO_MORE_FRAMES, JVMDI_ERROR_INVALID_FRAMEID,
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* JVMDI_ERROR_NULL_POINTER
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetCallerFrame(JNIEnv * /* env */, jframeID /* called*/, jframeID * /*framePtr*/)
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{
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// Use code from the stackwalker here
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return via "classPtr" and "methodPtr" the active method in the
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* specified frame.
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* Note: class returned via 'classPtr' is allocated globally and must be
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* explictly freed with DeleteGlobalRef.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_NULL_POINTER
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* JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_OUT_OF_MEMORY
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetFrameMethod(JNIEnv * /*env*/, jframeID /*frame*/,
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jclass * /*classPtr*/, jmethodID * /*methodPtr*/)
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{
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// Use code from the stackwalker here
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return via "bciPtr" the byte-code index within the active method of
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* the specified frame. This is the index of the currently executing
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* instruction.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_NATIVE_FRAME,
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* JVMDI_ERROR_NULL_POINTER
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetFrameBCI(JNIEnv * /*env*/, jframeID /*frame*/, jint * /*bciPtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Local variables
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*/
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/*
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* Return via "valuePtr" the value of the local variable at the
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* specificied slot.
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* Note: object returned via 'valuePtr' is allocated globally and must be
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* explictly freed with DeleteGlobalRef.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_NATIVE_FRAME, JVMDI_ERROR_OUT_OF_MEMORY
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetLocalObject(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/,
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jobject * /*valuePtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return via "valuePtr" the value of the local variable at the
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* specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetLocalInt(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/,
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jint * /*valuePtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return via "valuePtr" the value of the local variable at the
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* specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetLocalLong(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/,
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jlong * /*valuePtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return via "valuePtr" the value of the local variable at the
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* specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetLocalFloat(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/,
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jfloat * /*valuePtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Return via "valuePtr" the value of the local variable at the
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* specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NULL_POINTER,
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* JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_GetLocalDouble(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/,
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jdouble * /*valuePtr*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Set the value of the local variable at the specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetLocalObject(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/, jobject /*value*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Set the value of the local variable at the specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetLocalInt(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/, jint /*value*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Set the value of the local variable at the specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetLocalLong(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/, jlong /*value*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Set the value of the local variable at the specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetLocalFloat(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/, jfloat /*value*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Set the value of the local variable at the specificied slot.
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* Errors: JVMDI_ERROR_INVALID_FRAMEID, JVMDI_ERROR_INVALID_SLOT,
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* JVMDI_ERROR_TYPE_MISMATCH, JVMDI_ERROR_NATIVE_FRAME
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetLocalDouble(JNIEnv * /*env*/, jframeID /*frame*/, jint /*slot*/, jdouble /*value*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Breakpoints
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*/
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/*
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* Set a breakpoint. Send a JVMDI_EVENT_BREAKPOINT event when the
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* instruction at the specified byte-code index in the specified
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* method is about to be executed.
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* Errors: JVMDI_ERROR_INVALID_METHODID, JVMDI_ERROR_INVALID_CLASS,
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* JVMDI_ERROR_INVALID_BCI, JVMDI_ERROR_DUPLICATE_BREAKPOINT,
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* JVMDI_ERROR_VM_DEAD, JVMDI_ERROR_OUT_OF_MEMORY
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetBreakpoint(JNIEnv * /*env*/, jclass /* clazz */,
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jmethodID method, jint /*bci*/)
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{
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CacheEntry* ce;
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ce = NativeCodeCache::getCache().lookupByRange((Uint8*) method);
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if (ce == NULL) {
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/* either the method is not compiled - in which case compile it */
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return JVMDI_ERROR_INVALID_METHODID;
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}
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void *code = addressFunction(ce->descriptor.method->getCode());
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if (code == NULL) {
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return JVMDI_ERROR_INVALID_METHODID;
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} // else if (code == stub) compile and then break;
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// Convert the bci to a pc offset and add it to code
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VM::debugger.setBreakPoint(code);
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return JVMDI_ERROR_NONE;
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}
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/*
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* Clear a breakpoint.
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* Errors: JVMDI_ERROR_INVALID_METHODID, JVMDI_ERROR_INVALID_CLASS,
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* JVMDI_ERROR_INVALID_BCI, JVMDI_ERROR_NO_SUCH_BREAKPOINT,
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* JVMDI_ERROR_VM_DEAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_ClearBreakpoint(JNIEnv * /*env*/, jclass /*clazz*/, jmethodID /*method*/, jint /*bci*/)
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{
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return JVMDI_ERROR_NOT_IMPLEMENTED;
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}
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/*
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* Clear all breakpoints.
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* Errors: JVMDI_ERROR_VM_DEAD
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_ClearAllBreakpoints(JNIEnv * /*env*/)
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{
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VM::debugger.clearAllBreakPoints();
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return JVMDI_ERROR_NONE;
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}
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/*
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* Set the routine which will handle in-coming events.
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* Passing NULL as hook unsets hook.
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*/
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JNIEXPORT JNICALL(jvmdiError)
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JVMDI_SetEventHook(JNIEnv * /*env*/, JVMDI_EventHook hook)
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{
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eventHook = hook;
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return JVMDI_ERROR_NONE;
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}
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/*
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* Method access
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*/
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/*
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* Return via "namePtr" the method's name and via "signaturePtr" the
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* method's signature.
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* Note: strings returned via 'namePtr' and 'signaturePtr' are
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* allocated globally and must be explictly freed with DeleteGlobalRef.
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|
* Errors: JVMDI_ERROR_INVALID_METHODID, JVMDI_ERROR_INVALID_CLASS,
|
|
* JVMDI_ERROR_NULL_POINTER, JVMDI_ERROR_OUT_OF_MEMORY
|
|
*/
|
|
JNIEXPORT JNICALL(jvmdiError)
|
|
JVMDI_GetMethodName(JNIEnv * env, jclass /*clazz*/, jmethodID method,
|
|
jstring *namePtr, jstring *signaturePtr)
|
|
{
|
|
CacheEntry* ce;
|
|
ce = NativeCodeCache::getCache().lookupByRange((Uint8*) method);
|
|
|
|
if (namePtr == NULL || signaturePtr == NULL) {
|
|
return JVMDI_ERROR_NULL_POINTER;
|
|
}
|
|
if (ce == NULL) {
|
|
return JVMDI_ERROR_INVALID_METHODID;
|
|
}
|
|
|
|
*namePtr = (jstring) env->NewGlobalRef(
|
|
env->NewStringUTF(ce->descriptor.method->toString()));
|
|
*signaturePtr = (jstring) env->NewGlobalRef(
|
|
env->NewStringUTF(ce->descriptor.method->getSignatureString()));
|
|
|
|
return JVMDI_ERROR_NONE;
|
|
}
|
|
|
|
/*
|
|
* Return via "definingClassPtr" the class in which this method is
|
|
* defined.
|
|
* Note: class returned via 'definingClassPtr' is allocated globally
|
|
* and must be explictly freed with DeleteGlobalRef.
|
|
* Errors: JVMDI_ERROR_INVALID_METHODID, JVMDI_ERROR_INVALID_CLASS,
|
|
* JVMDI_ERROR_NULL_POINTER, JVMDI_ERROR_OUT_OF_MEMORY
|
|
*/
|
|
JNIEXPORT JNICALL(jvmdiError)
|
|
JVMDI_GetMethodDefiningClass(JNIEnv * env, jclass /* clazz */, jmethodID method,
|
|
jclass * definingClassPtr)
|
|
{
|
|
CacheEntry* ce;
|
|
ce = NativeCodeCache::getCache().lookupByRange((Uint8*) method);
|
|
|
|
if (definingClassPtr == NULL) {
|
|
return JVMDI_ERROR_NULL_POINTER;
|
|
}
|
|
*definingClassPtr = (jclass) (env->NewGlobalRef((jobject)
|
|
ce->descriptor.method->getDeclaringClass()));
|
|
|
|
return JVMDI_ERROR_NONE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Return via "isNativePtr" a boolean indicating whether the method
|
|
* is native.
|
|
* Errors: JVMDI_ERROR_INVALID_METHODID, JVMDI_ERROR_INVALID_CLASS,
|
|
* JVMDI_ERROR_NULL_POINTER
|
|
*/
|
|
JNIEXPORT JNICALL(jvmdiError)
|
|
JVMDI_IsMethodNative(JNIEnv * /* env */, jclass /* clazz */, jmethodID method,
|
|
jboolean * isNativePtr)
|
|
{
|
|
if (isNativePtr == NULL) {
|
|
return JVMDI_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
CacheEntry* ce;
|
|
ce = NativeCodeCache::getCache().lookupByRange((Uint8*) method);
|
|
|
|
if (ce == NULL) {
|
|
/* either the method is not compiled - in which case compile it */
|
|
return JVMDI_ERROR_INVALID_METHODID;
|
|
}
|
|
|
|
*isNativePtr = ce->descriptor.method->getMethodInfo().isNative();
|
|
|
|
return JVMDI_ERROR_NONE;
|
|
}
|
|
|
|
|
|
/*
|
|
* Misc
|
|
*/
|
|
|
|
/*
|
|
* Return via "classesPtr" all classes currently loaded in the VM.
|
|
* Note: array returned via 'classesPtr' is allocated globally
|
|
* and must be explictly freed with DeleteGlobalRef.
|
|
* Errors: JVMDI_ERROR_NULL_POINTER, JVMDI_ERROR_OUT_OF_MEMORY
|
|
*/
|
|
JNIEXPORT JNICALL(jvmdiError)
|
|
JVMDI_GetLoadedClasses(JNIEnv * /*env*/, jobjectArray * /*classesPtr*/)
|
|
{
|
|
return JVMDI_ERROR_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
/*
|
|
* Return via "versionPtr" the JVMDI version number.
|
|
* Higher 16 bits is major version number, lower 16 bit is minor
|
|
* version number.
|
|
* Errors: JVMDI_ERROR_NULL_POINTER
|
|
*/
|
|
JNIEXPORT JNICALL(jvmdiError)
|
|
JVMDI_GetVersionNumber(JNIEnv * /*env*/, jint *versionPtr)
|
|
{
|
|
if (versionPtr == NULL) {
|
|
return JVMDI_ERROR_NULL_POINTER;
|
|
}
|
|
*versionPtr = 0x00000003;
|
|
return JVMDI_ERROR_NONE;
|
|
}
|
|
|
|
} // extern C
|