📄 hal_intr.h
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#ifndef CYGONCE_HAL_HAL_INTR_H
#define CYGONCE_HAL_HAL_INTR_H
//==========================================================================
//
// hal_intr.h
//
// m68k Interrupt and clock support
//
//==========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos 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
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//==========================================================================
#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
#include <cyg/hal/hal_arch.h>
#include <cyg/hal/var_intr.h>
//--------------------------------------------------------------------------
// m68k exception vectors. These correspond to VSRs and are the values
// to use for HAL_VSR_GET/SET
#define CYGNUM_HAL_VECTOR_SSP 0
#define CYGNUM_HAL_VECTOR_RESET 1
#define CYGNUM_HAL_VECTOR_BUSERR 2
#define CYGNUM_HAL_VECTOR_ADDERR 3
#define CYGNUM_HAL_VECTOR_ILLINST 4
#define CYGNUM_HAL_VECTOR_ZERODIV 5
#define CYGNUM_HAL_VECTOR_CHKINST 6
#define CYGNUM_HAL_VECTOR_TRAPVINST 7
#define CYGNUM_HAL_VECTOR_PRIVVIOLATION 8
#define CYGNUM_HAL_VECTOR_TRACE 9
#define CYGNUM_HAL_VECTOR_L1010 10
#define CYGNUM_HAL_VECTOR_L1111 11
#define CYGNUM_HAL_VECTOR_UNINITINT 15
#define CYGNUM_HAL_VECTOR_SPURINT 24
#define CYGNUM_HAL_VECTOR_AUTOVEC1 25
#define CYGNUM_HAL_VECTOR_AUTOVEC2 26
#define CYGNUM_HAL_VECTOR_AUTOVEC3 27
#define CYGNUM_HAL_VECTOR_AUTOVEC4 28
#define CYGNUM_HAL_VECTOR_AUTOVEC5 29
#define CYGNUM_HAL_VECTOR_AUTOVEC6 30
#define CYGNUM_HAL_VECTOR_AUTOVEC7 31
#define CYGNUM_HAL_VECTOR_NMI CYGNUM_HAL_VECTOR_AUTOVEC7
#define CYGNUM_HAL_VECTOR_TRAPFIRST 32
#define CYGNUM_HAL_VECTOR_NUMTRAPS 16
#define CYGNUM_HAL_VECTOR_TRAPLAST (CYGNUM_HAL_VECTOR_TRAPFIRST+CYGNUM_HAL_VECTOR_NUMTRAPS-1)
#define CYGNUM_HAL_VECTOR_INTRFIRST 64
#define CYGNUM_HAL_VECTOR_NUMINTRS 192
#define CYGNUM_HAL_VECTOR_INTRLAST (CYGNUM_HAL_VECTOR_INTRFIRST+CYGNUM_HAL_VECTOR_NUMINTRS-1)
#define CYGNUM_HAL_VSR_MIN CYGNUM_HAL_VECTOR_SSP
#define CYGNUM_HAL_VSR_MAX CYGNUM_HAL_VECTOR_INTRLAST
#define CYGNUM_HAL_VSR_COUNT (CYGNUM_HAL_VSR_MAX+1)
//--------------------------------------------------------------------------
// Interrupt vectors.
#ifndef CYGNUM_HAL_ISR_MAX
#define CYGNUM_HAL_ISR_MIN 0
#define CYGNUM_HAL_ISR_MAX 255
#define CYGNUM_HAL_ISR_COUNT (7+CYGNUM_HAL_VECTOR_NUMINTRS)
#endif /* CYGNUM_HAL_ISR_MAX */
#ifndef CYGNUM_HAL_EXCEPTION_COUNT
#define CYGNUM_HAL_EXCEPTION_MIN CYGNUM_HAL_VECTOR_BUSERR
#define CYGNUM_HAL_EXCEPTION_MAX CYGNUM_HAL_VECTOR_SPURINT
#define CYGNUM_HAL_EXCEPTION_COUNT ((CYGNUM_HAL_EXCEPTION_MAX-CYGNUM_HAL_EXCEPTION_MIN)+1)
#endif /* CYGNUM_HAL_EXCEPTION_COUNT */
//--------------------------------------------------------------------------
// Static data used by HAL
// ISR tables
externC volatile CYG_ADDRESS cyg_hal_interrupt_handlers[CYGNUM_HAL_ISR_COUNT];
externC volatile CYG_ADDRWORD cyg_hal_interrupt_data[CYGNUM_HAL_ISR_COUNT];
externC volatile CYG_ADDRESS cyg_hal_interrupt_objects[CYGNUM_HAL_ISR_COUNT];
// VSR table
externC volatile CYG_ADDRESS cyg_hal_vsr_table[CYGNUM_HAL_VSR_COUNT];
//---------------------------------------------------------------------------
// Translate a vector number into an ISR table index.
#define HAL_TRANSLATE_VECTOR(_vector_,_index_) \
CYG_MACRO_START \
switch ((_vector_)) \
{ \
case CYGNUM_HAL_VECTOR_AUTOVEC1 ... CYGNUM_HAL_VECTOR_AUTOVEC7: \
(_index_) = ((_vector_) - CYGNUM_HAL_VECTOR_AUTOVEC1); \
break; \
case CYGNUM_HAL_VECTOR_INTRFIRST ... CYGNUM_HAL_VECTOR_INTRLAST: \
(_index_) = ((_vector_) \
- CYGNUM_HAL_VECTOR_INTRFIRST \
+ (CYGNUM_HAL_VECTOR_AUTOVEC7 \
- CYGNUM_HAL_VECTOR_AUTOVEC1 \
+ 1)); \
break; \
default: \
CYG_FAIL("Unknown Interrupt!!!"); \
(_index_) = (typeof(_index_))-1; \
} \
CYG_MACRO_END
//--------------------------------------------------------------------------
// Interrupt state storage
typedef cyg_uint16 CYG_INTERRUPT_STATE;
//---------------------------------------------------------------------------
// Interrupt and VSR attachment macros
externC cyg_uint32 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);
externC void hal_default_exception_handler(CYG_WORD vector,
HAL_SavedRegisters *regs);
#define HAL_INTERRUPT_IN_USE( _vector_, _state_) \
CYG_MACRO_START \
cyg_uint32 _index_; \
HAL_TRANSLATE_VECTOR ((_vector_), _index_); \
\
if (cyg_hal_interrupt_handlers[_index_] \
==(CYG_ADDRESS)&hal_default_isr) \
(_state_) = 0; \
else \
(_state_) = 1; \
CYG_MACRO_END
#define HAL_INTERRUPT_ATTACH( _vector_, _isr_, _data_, _object_ ) \
CYG_MACRO_START \
cyg_uint32 _index_; \
HAL_TRANSLATE_VECTOR((_vector_), _index_); \
\
if (cyg_hal_interrupt_handlers[_index_] \
==(CYG_ADDRESS)&hal_default_isr) \
{ \
cyg_hal_interrupt_handlers[_index_] = (CYG_ADDRESS)(_isr_); \
cyg_hal_interrupt_data[_index_] = (CYG_ADDRWORD)(_data_); \
cyg_hal_interrupt_objects[_index_] = (CYG_ADDRESS)(_object_); \
} \
CYG_MACRO_END
#define HAL_INTERRUPT_DETACH( _vector_, _isr_ ) \
CYG_MACRO_START \
cyg_uint32 _index_; \
HAL_INTERRUPT_MASK(_vector_); \
HAL_TRANSLATE_VECTOR((_vector_), _index_); \
if (cyg_hal_interrupt_handlers[_index_] \
== (CYG_ADDRESS)(_isr_)) \
{ \
cyg_hal_interrupt_handlers[_index_] = \
(CYG_ADDRESS)&hal_default_isr; \
cyg_hal_interrupt_data[_index_] = 0; \
cyg_hal_interrupt_objects[_index_] = 0; \
} \
CYG_MACRO_END
#define HAL_VSR_GET( _vector_, _pvsr_ ) \
*((CYG_ADDRESS *)(_pvsr_)) = cyg_hal_vsr_table[(_vector_)];
#define HAL_VSR_SET( _vector_, _vsr_, _poldvsr_ ) \
CYG_MACRO_START \
if( (_poldvsr_) != NULL ) \
*(CYG_ADDRESS *)(_poldvsr_) = cyg_hal_vsr_table[(_vector_)]; \
cyg_hal_vsr_table[(_vector_)] = (CYG_ADDRESS)(_vsr_); \
CYG_MACRO_END
//--------------------------------------------------------------------------
// Interrupt control macros
// The following interrupt control macros are the default for the 68k
// architecture. Some architectures will override these definitions by
// defining them in their var_intr.h file. Some architectures support
// instructions like andi.w #xxxx,%sr but others (Coldfire) do not.
// Architectures that support these other instructions will want to define
// their own macros.
#define HAL_M68K_SET_SR(__newsr__) \
CYG_MACRO_START \
asm volatile ("move.w %0,%%sr\n" \
: \
: "g" ((CYG_INTERRUPT_STATE)(__newsr__))); \
CYG_MACRO_END
#ifndef HAL_ENABLE_INTERRUPTS
#define HAL_ENABLE_INTERRUPTS() \
CYG_MACRO_START \
CYG_INTERRUPT_STATE _msk_; \
HAL_QUERY_INTERRUPTS(_msk_); \
HAL_M68K_SET_SR((_msk_ & (CYG_INTERRUPT_STATE)0xf8ff)); \
CYG_MACRO_END
#endif // HAL_ENABLE_INTERRUPTS
#ifndef HAL_DISABLE_INTERRUPTS
#define HAL_DISABLE_INTERRUPTS(_old_) \
CYG_MACRO_START \
HAL_QUERY_INTERRUPTS(_old_); \
HAL_M68K_SET_SR((_old_ | (CYG_INTERRUPT_STATE)0x0700)); \
CYG_MACRO_END
#endif //HAL_DISABLE_INTERRUPTS
#define HAL_RESTORE_INTERRUPTS(_prev_) \
CYG_MACRO_START \
CYG_INTERRUPT_STATE _msk_; \
HAL_QUERY_INTERRUPTS(_msk_); \
_msk_ &= (CYG_INTERRUPT_STATE)0xf8ff; \
_msk_ |= (((CYG_INTERRUPT_STATE)(_prev_)) \
& (CYG_INTERRUPT_STATE)0x0700); \
asm volatile ("move.w %0,%%sr\n" \
: \
: "g" (_msk_)); \
CYG_MACRO_END
// Use the extra assignment to avoid warnings.
// The compiler should optimize it out.
#define HAL_QUERY_INTERRUPTS(__oldmask__) \
CYG_MACRO_START \
CYG_INTERRUPT_STATE _omsk_ = (CYG_INTERRUPT_STATE)(__oldmask__); \
asm volatile ("move.w %%sr,%0\n" \
: "=g" (_omsk_) \
: ); \
(__oldmask__) = (typeof(__oldmask__))_omsk_; \
CYG_MACRO_END
//---------------------------------------------------------------------------
#endif // ifndef CYGONCE_HAL_HAL_INTR_H
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