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#ifndef CYGONCE_HAL_HAL_INTR_H
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#define CYGONCE_HAL_HAL_INTR_H
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//==========================================================================
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//
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// hal_intr.h
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//
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// ColdFire interrupt/exception support
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//
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//==========================================================================
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// ####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002, 2006 Free Software Foundation, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later
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// version.
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//
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// eCos 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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// for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with eCos; if not, write to the Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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// As a special exception, if other files instantiate templates or use
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// macros or inline functions from this file, or you compile this file
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// and link it with other works to produce a work based on this file,
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// this file does not by itself cause the resulting work to be covered by
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// the GNU General Public License. However the source code for this file
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// must still be made available in accordance with section (3) of the GNU
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// General Public License v2.
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//
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// This exception does not invalidate any other reasons why a work based
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// on this file might be covered by the GNU General Public License.
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// -------------------------------------------
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// ####ECOSGPLCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s): Enrico Piria
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// Contributors:
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// Date: 2005-25-06
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// Purpose: Provide ColdFire-specific interrupt and exception
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// definitions.
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// Usage: #include <cyg/hal/hal_intr.h>
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//
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//####DESCRIPTIONEND####
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//========================================================================
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#include <pkgconf/hal.h>
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#include <cyg/infra/cyg_type.h>
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#include <cyg/hal/hal_arch.h>
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#include <cyg/hal/var_intr.h>
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#include <cyg/infra/cyg_ass.h> // CYG_FAIL
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// -------------------------------------------------------------------------
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// ColdFire exception vectors. These correspond to VSRs and are the values
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// to use for HAL_VSR_GET/SET.
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#define CYGNUM_HAL_VECTOR_RESETSP 0
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#define CYGNUM_HAL_VECTOR_RESETPC 1
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#define CYGNUM_HAL_VECTOR_BUSERR 2
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#define CYGNUM_HAL_VECTOR_ADDRERR 3
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#define CYGNUM_HAL_VECTOR_ILLINST 4
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#define CYGNUM_HAL_VECTOR_ZERODIV 5
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// Exception vectors 6-7 are reserved
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#define CYGNUM_HAL_VECTOR_PRIVVIOLATION 8
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#define CYGNUM_HAL_VECTOR_TRACE 9
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#define CYGNUM_HAL_VECTOR_L1010 10
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#define CYGNUM_HAL_VECTOR_L1111 11
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#define CYGNUM_HAL_VECTOR_DEBUG12 12
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#define CYGNUM_HAL_VECTOR_DEBUG13 13
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#define CYGNUM_HAL_VECTOR_FORMAT 14
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#define CYGNUM_HAL_VECTOR_UNINITINT 15
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// Exception vectors 16-23 are reserved
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#define CYGNUM_HAL_VECTOR_SPURINT 24
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#define CYGNUM_HAL_VECTOR_AUTOVEC1 25
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#define CYGNUM_HAL_VECTOR_AUTOVEC2 26
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#define CYGNUM_HAL_VECTOR_AUTOVEC3 27
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#define CYGNUM_HAL_VECTOR_AUTOVEC4 28
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#define CYGNUM_HAL_VECTOR_AUTOVEC5 29
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#define CYGNUM_HAL_VECTOR_AUTOVEC6 30
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#define CYGNUM_HAL_VECTOR_AUTOVEC7 31
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#define CYGNUM_HAL_NUMAUTOVEC 7
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#define CYGNUM_HAL_VECTOR_TRAPFIRST 32
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#define CYGNUM_HAL_VECTOR_TRAPLAST 47
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#define CYGNUM_HAL_NUMTRAPS 16
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#define CYGNUM_HAL_VECTOR_FP_BRANCH 48
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#define CYGNUM_HAL_VECTOR_FP_INEXACT 49
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#define CYGNUM_HAL_VECTOR_FP_ZERODIV 50
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#define CYGNUM_HAL_VECTOR_FP_UNDERFLOW 51
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#define CYGNUM_HAL_VECTOR_FP_OPERAND 52
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#define CYGNUM_HAL_VECTOR_FP_OVERFLOW 53
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#define CYGNUM_HAL_VECTOR_FP_NAN 54
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#define CYGNUM_HAL_VECTOR_FP_DENORM 55
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// Exception vectors 56-60 are reserved
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#define CYGNUM_HAL_VECTOR_UNSUPINST 61
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// Exception vectors 62-63 are reserved
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#define CYGNUM_HAL_VECTOR_USERINTRFIRST 64
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#define CYGNUM_HAL_VECTOR_USERINTRLAST 255
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#define CYGNUM_HAL_NUMUSERINTR 192
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// -------------------------------------------------------------------------
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// Interrupt and exception vector table definitions.
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#define CYGNUM_HAL_VSR_MIN 0
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#define CYGNUM_HAL_VSR_MAX 255
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#define CYGNUM_HAL_VSR_COUNT (CYGNUM_HAL_VSR_MAX - CYGNUM_HAL_VSR_MIN + 1)
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// To simplify things in interrupt handling code, we don't take into account
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// autovectored, spurious and uninitialized interrupts.
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#ifndef CYGNUM_HAL_ISR_RANGE_DEFINED
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#define CYGNUM_HAL_ISR_MIN CYGNUM_HAL_VECTOR_USERINTRFIRST
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#define CYGNUM_HAL_ISR_MAX CYGNUM_HAL_VECTOR_USERINTRLAST
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#define CYGNUM_HAL_ISR_COUNT (CYGNUM_HAL_ISR_MAX - CYGNUM_HAL_ISR_MIN + 1)
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#endif
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#ifndef CYGNUM_HAL_EXCEPTION_RANGE_DEFINED
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#define CYGNUM_HAL_EXCEPTION_MIN CYGNUM_HAL_VECTOR_BUSERR
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#define CYGNUM_HAL_EXCEPTION_MAX CYGNUM_HAL_VECTOR_UNSUPINST
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#define CYGNUM_HAL_EXCEPTION_COUNT (CYGNUM_HAL_EXCEPTION_MAX -\
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CYGNUM_HAL_EXCEPTION_MIN + 1)
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#endif
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// -------------------------------------------------------------------------
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// Equivalence between ColdFire exception names and target independent
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// exception names.
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// These are the values used when passed out to an
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// external exception handler using cyg_hal_deliver_exception().
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#define CYGNUM_HAL_EXCEPTION_ILLEGAL_INSTRUCTION CYGNUM_HAL_VECTOR_ILLINST
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#define CYGNUM_HAL_EXCEPTION_DIV_BY_ZERO CYGNUM_HAL_VECTOR_ZERODIV
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#define CYGNUM_HAL_EXCEPTION_DATA_ACCESS CYGNUM_HAL_VECTOR_BUSERR
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#define CYGNUM_HAL_EXCEPTION_CODE_ACCESS CYGNUM_HAL_VECTOR_BUSERR
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// -------------------------------------------------------------------------
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// Spurious interrupt definition.
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#ifndef CYGNUM_HAL_SPURIOUS_INTERRUPT
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#define CYGNUM_HAL_SPURIOUS_INTERRUPT CYGNUM_HAL_VECTOR_SPURINT
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#endif
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// -------------------------------------------------------------------------
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// Static data used by HAL.
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// ISR tables
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externC volatile CYG_ADDRESS cyg_hal_interrupt_handlers[CYGNUM_HAL_ISR_COUNT];
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externC volatile CYG_ADDRWORD cyg_hal_interrupt_data[CYGNUM_HAL_ISR_COUNT];
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externC volatile CYG_ADDRESS cyg_hal_interrupt_objects[CYGNUM_HAL_ISR_COUNT];
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// VSR table
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externC volatile CYG_ADDRESS cyg_hal_vsr_table[CYGNUM_HAL_VSR_COUNT];
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// ROM VSR table
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externC CYG_ADDRESS rom_vsr_table[CYGNUM_HAL_VSR_COUNT];
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// -------------------------------------------------------------------------
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// Interrupt stack definitions.
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#ifdef CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK
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externC void hal_interrupt_stack_call_pending_DSRs(void);
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#define HAL_INTERRUPT_STACK_CALL_PENDING_DSRS() \
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hal_interrupt_stack_call_pending_DSRs()
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#endif
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// A separate stack always exist to allow the processor to initialize itself.
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// It depends on CYGIMP_HAL_COMMON_INTERRUPTS_USE_INTERRUPT_STACK macro
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// definition if this stack is used for interrupts too.
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#define HAL_INTERRUPT_STACK_BASE cyg_interrupt_stack_base
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#define HAL_INTERRUPT_STACK_TOP cyg_interrupt_stack
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externC char HAL_INTERRUPT_STACK_BASE[];
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externC char HAL_INTERRUPT_STACK_TOP[];
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// --------------------------------------------------------------------------
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// Translate a vector number into an ISR table index.
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#ifndef HAL_TRANSLATE_VECTOR
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#define HAL_TRANSLATE_VECTOR(_vector_,_index_) (_index_) = (_vector_- CYGNUM_HAL_ISR_MIN)
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#endif
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// -------------------------------------------------------------------------
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// Interrupt state storage.
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typedef cyg_uint16 CYG_INTERRUPT_STATE;
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// --------------------------------------------------------------------------
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// Interrupt and VSR attachment macros.
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externC cyg_uint32 hal_default_isr(CYG_ADDRWORD vector, CYG_ADDRWORD data);
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externC void hal_default_exception_handler(CYG_WORD vector,
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HAL_SavedRegisters *regs);
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#define HAL_INTERRUPT_IN_USE( _vector_, _state_) \
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CYG_MACRO_START \
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cyg_uint32 _index_; \
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HAL_TRANSLATE_VECTOR ((_vector_), _index_); \
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\
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if (cyg_hal_interrupt_handlers[_index_] \
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== (CYG_ADDRESS) &hal_default_isr) \
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(_state_) = 0; \
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else \
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(_state_) = 1; \
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CYG_MACRO_END
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#define HAL_INTERRUPT_ATTACH( _vector_, _isr_, _data_, _object_ ) \
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CYG_MACRO_START \
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cyg_uint32 _index_; \
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HAL_TRANSLATE_VECTOR((_vector_), _index_); \
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\
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if (cyg_hal_interrupt_handlers[_index_] \
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== (CYG_ADDRESS) &hal_default_isr) \
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{ \
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cyg_hal_interrupt_handlers[_index_] = (CYG_ADDRESS)(_isr_); \
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cyg_hal_interrupt_data[_index_] = (CYG_ADDRWORD)(_data_); \
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cyg_hal_interrupt_objects[_index_] = (CYG_ADDRESS)(_object_); \
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} \
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CYG_MACRO_END
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#define HAL_INTERRUPT_DETACH( _vector_, _isr_ ) \
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CYG_MACRO_START \
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cyg_uint32 _index_; \
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HAL_INTERRUPT_MASK(_vector_); \
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HAL_TRANSLATE_VECTOR((_vector_), _index_); \
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if (cyg_hal_interrupt_handlers[_index_] \
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== (CYG_ADDRESS)(_isr_)) \
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{ \
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cyg_hal_interrupt_handlers[_index_] = \
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(CYG_ADDRESS)&hal_default_isr; \
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cyg_hal_interrupt_data[_index_] = 0; \
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cyg_hal_interrupt_objects[_index_] = 0; \
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} \
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CYG_MACRO_END
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#define HAL_VSR_GET( _vector_, _pvsr_ ) \
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*((CYG_ADDRESS *)(_pvsr_)) = cyg_hal_vsr_table[(_vector_)];
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#define HAL_VSR_SET( _vector_, _vsr_, _poldvsr_ ) \
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CYG_MACRO_START \
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if( (_poldvsr_) != NULL ) \
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*(CYG_ADDRESS *)(_poldvsr_) = cyg_hal_vsr_table[(_vector_)]; \
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cyg_hal_vsr_table[(_vector_)] = (CYG_ADDRESS)(_vsr_); \
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CYG_MACRO_END
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// This is an ugly name, but what it means is: grab the VSR back to eCos
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// internal handling, or if you like, the default handler. But if
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// cooperating with a ROM monitor, the default behaviour is to pass most
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// exceptions to it. This macro undoes that so that eCos handles the
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// exception. So use it with care.
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#define HAL_VSR_SET_TO_ECOS_HANDLER( _vector_, _poldvsr_ ) \
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CYG_MACRO_START \
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if( (void*)_poldvsr_ != (void*)NULL ) \
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*(CYG_ADDRESS *)_poldvsr_ = cyg_hal_vsr_table[_vector_]; \
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cyg_hal_vsr_table[_vector_] = rom_vsr_table[_vector_]; \
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CYG_MACRO_END
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// -------------------------------------------------------------------------
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// Interrupt control macros.
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// The following interrupt control macros are the default for the ColdFire
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// architecture. Some processor variants will override these definitions in
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// their var_intr.h file.
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#ifndef HAL_CF_SET_SR
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#define HAL_CF_SET_SR(__newsr__) \
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CYG_MACRO_START \
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asm volatile ("move.w %0,%%sr\n" \
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: \
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: "d" ((CYG_INTERRUPT_STATE)(__newsr__))); \
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CYG_MACRO_END
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#endif // HAL_CF_SET_SR
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#ifndef HAL_ENABLE_INTERRUPTS
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#define HAL_ENABLE_INTERRUPTS() \
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CYG_MACRO_START \
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CYG_INTERRUPT_STATE _msk_; \
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HAL_QUERY_INTERRUPTS(_msk_); \
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HAL_CF_SET_SR((_msk_ & (CYG_INTERRUPT_STATE)0xf8ff)); \
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CYG_MACRO_END
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#endif // HAL_ENABLE_INTERRUPTS
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#ifndef HAL_DISABLE_INTERRUPTS
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#define HAL_DISABLE_INTERRUPTS(_old_) \
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CYG_MACRO_START \
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HAL_QUERY_INTERRUPTS(_old_); \
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HAL_CF_SET_SR((_old_ | (CYG_INTERRUPT_STATE)0x0700)); \
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CYG_MACRO_END
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#endif //HAL_DISABLE_INTERRUPTS
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#ifndef HAL_RESTORE_INTERRUPTS
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#define HAL_RESTORE_INTERRUPTS(_prev_) \
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CYG_MACRO_START \
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CYG_INTERRUPT_STATE _msk_; \
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HAL_QUERY_INTERRUPTS(_msk_); \
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_msk_ &= (CYG_INTERRUPT_STATE)0xf8ff; \
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_msk_ |= (((CYG_INTERRUPT_STATE)(_prev_)) \
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& (CYG_INTERRUPT_STATE)0x0700); \
|
324 |
|
|
asm volatile ("move.w %0,%%sr\n" \
|
325 |
|
|
: \
|
326 |
|
|
: "d" (_msk_)); \
|
327 |
|
|
CYG_MACRO_END
|
328 |
|
|
#endif // HAL_RESTORE_INTERRUPTS
|
329 |
|
|
|
330 |
|
|
// Use the extra assignment to avoid warnings.
|
331 |
|
|
// The compiler should optimize it out.
|
332 |
|
|
#ifndef HAL_QUERY_INTERRUPTS
|
333 |
|
|
#define HAL_QUERY_INTERRUPTS(__oldmask__) \
|
334 |
|
|
CYG_MACRO_START \
|
335 |
|
|
CYG_INTERRUPT_STATE _omsk_ = (CYG_INTERRUPT_STATE)(__oldmask__); \
|
336 |
|
|
asm volatile ("move.w %%sr,%0\n" \
|
337 |
|
|
: "=d" (_omsk_) \
|
338 |
|
|
: ); \
|
339 |
|
|
(__oldmask__) = (__typeof__(__oldmask__))_omsk_; \
|
340 |
|
|
CYG_MACRO_END
|
341 |
|
|
#endif // HAL_QUERY_INTERRUPTS
|
342 |
|
|
|
343 |
|
|
// ---------------------------------------------------------------------------
|
344 |
|
|
// End of hal_intr.h
|
345 |
|
|
#endif // ifndef CYGONCE_HAL_HAL_INTR_H
|