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/* IBM_PROLOG_BEGIN_TAG */
/* This is an automatically generated prolog. */
/* */
/* $Source: src/include/kernel/idebug.H $ */
/* */
/* OpenPOWER HostBoot Project */
/* */
/* COPYRIGHT International Business Machines Corp. 2011,2014 */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or */
/* implied. See the License for the specific language governing */
/* permissions and limitations under the License. */
/* */
/* IBM_PROLOG_END_TAG */
#ifndef __KERNEL_IDEBUG_H
#define __KERNEL_IDEBUG_H
/** @file idebug.H
* @brief Structure for interactive debug support.
*/
#include <kernel/types.h>
#include <kernel/taskmgr.H>
/** @class InteractiveDebug
* @brief Structure that defines data needed for an interactive-debug call.
*/
class InteractiveDebug
{
public:
/** Union to contain the state information between the kernel and
* the debug tool.
*/
union
{
struct
{
/** Boolean for 'ready' state. */
uint8_t ready;
/** Boolean to mark kernel running request. */
uint8_t running;
/** Boolean to mark execution is complete. */
uint8_t complete;
uint8_t __reserved[5];
};
/** Word so that state can be atomically updated. */
uint64_t state_value;
};
/** Address of the desired function's TOC. */
uint64_t entry_point_toc;
/** Return value from function. */
uint64_t return_value;
/** Desired function parameters. */
uint64_t parms[8];
/** @brief Returns the 'ready' state from the union. */
bool isReady() { return ready != 0; };
/** @brief Creates a userspace task to execute debug call.
*
* @pre 'ready' state set and entry_point/parms are initialized by
* the debug tool.
*
* @post A detached task is created to execute the function.
*/
void startDebugTask();
private:
/** @brief Entry point for 'task_create' of debug task.
* @param[in] idebug - Pointer to this interactive-debug structure.
*/
static void* debugEntryPoint(void* idebug);
};
#endif
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