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/* debugmod.h
*
* This file contains definitions for the IBM/Motorola PowerPC
* family members.
*
* Author: Andrew Bray <andy@i-cubed.co.uk>
*
* COPYRIGHT (c) 1995 by i-cubed ltd.
*
* MPC860 support code was added by Jay Monkman <jmonkman@frasca.com>
* MPC8260 support added by Andy Dachs <a.dachs@sstl.co.uk>
* Surrey Satellite Technology Limited
*
* To anyone who acknowledges that this file is provided "AS IS"
* without any express or implied warranty:
* permission to use, copy, modify, and distribute this file
* for any purpose is hereby granted without fee, provided that
* the above copyright notice and this notice appears in all
* copies, and that the name of i-cubed limited not be used in
* advertising or publicity pertaining to distribution of the
* software without specific, written prior permission.
* i-cubed limited makes no representations about the suitability
* of this software for any purpose.
*
* Derived from c/src/exec/cpu/no_cpu/no_cpu.h:
*
* COPYRIGHT (c) 1989-1997.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may in
* the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
*
* Note:
* This file is included by both C and assembler code ( -DASM )
*/
/*
* FIXME: This file is not used anywhere inside of RTEMS source-tree.
* Notify OAR if you actually use it, otherwise it might be removed in
* future versions of RTEMS
*/
#ifndef _RTEMS_POWERPC_DEBUGMOD_H
#define _RTEMS_POWERPC_DEBUGMOD_H
#warning "please read the FIXME inside of this file"
#ifdef __cplusplus
extern "C" {
#endif
/*
* This file contains the information required to build
* RTEMS for a particular member of the PowerPC family. It does
* this by setting variables to indicate which implementation
* dependent features are present in a particular member
* of the family.
*
* The following architectural feature definitions are defaulted
* unless specifically set by the model definition:
*
* + PPC_DEBUG_MODEL - PPC_DEBUG_MODEL_STANDARD
*/
/*
* Define the debugging assistance models found in the PPC family.
*
* Standard: single step and branch trace
* Single Step Only: single step only
* IBM 4xx: debug exception
*/
#define PPC_DEBUG_MODEL_STANDARD 1
#define PPC_DEBUG_MODEL_SINGLE_STEP_ONLY 2
#define PPC_DEBUG_MODEL_IBM4xx 3
#elif defined(ppc403) || defined(ppc405) || defined(ppc440)
#define PPC_DEBUG_MODEL PPC_DEBUG_MODEL_IBM4xx
#elif defined(ppc601)
#define PPC_DEBUG_MODEL PPC_DEBUG_MODEL_SINGLE_STEP_ONLY
#endif
/*
* Use the default debug scheme defined in the architectural specification
* if another model has not been specified.
*/
#ifndef PPC_DEBUG_MODEL
#define PPC_DEBUG_MODEL PPC_DEBUG_MODEL_STANDARD
#endif
/*
* Interrupt/exception MSR bits set as defined on p. 2-20 in "The Programming
* Environments" and the manuals for various PPC models.
*/
#if (PPC_DEBUG_MODEL == PPC_DEBUG_MODEL_STANDARD)
#define PPC_MSR_DE 0x000000000 /* bit 22 - debug exception enable */
#define PPC_MSR_BE 0x000000200 /* bit 22 - branch trace enable */
#define PPC_MSR_SE 0x000000400 /* bit 21 - single step trace enable */
#elif (PPC_DEBUG_MODEL == PPC_DEBUG_MODEL_SINGLE_STEP_ONLY)
#define PPC_MSR_DE 0x000000000 /* bit 22 - debug exception enable */
#define PPC_MSR_BE 0x000000200 /* bit 22 - branch trace enable */
#define PPC_MSR_SE 0x000000000 /* bit 21 - single step trace enable */
#elif (PPC_DEBUG_MODEL == PPC_DEBUG_MODEL_IBM4xx)
#define PPC_MSR_DE 0x000000200 /* bit 22 - debug exception enable */
#define PPC_MSR_BE 0x000000000 /* bit 22 - branch trace enable */
#define PPC_MSR_SE 0x000000000 /* bit 21 - single step trace enable */
#else
#error "MSR constants -- unknown PPC_DEBUG_MODEL!!"
#endif
#ifdef __cplusplus
}
#endif
#endif /* _RTEMS_POWERPC_DEBUGMOD_H */
/* end of include file */
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