/* except.h -- OR1K architecture specific exceptions
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/* except.h -- OR1K architecture specific exceptions
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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Copyright (C) 1999 Damjan Lampret, lampret@opencores.org
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This file is part of OpenRISC 1000 Architectural Simulator.
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This file is part of OpenRISC 1000 Architectural Simulator.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#ifndef _EXCEPT_H_
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#ifndef _EXCEPT_H_
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#define _EXCEPT_H_
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#define _EXCEPT_H_
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/* Define if you want pure virtual machine simulation (no exceptions etc.) */
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/* Define if you want pure virtual machine simulation (no exceptions etc.) */
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#define ONLY_VIRTUAL_MACHINE 0
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#define ONLY_VIRTUAL_MACHINE 0
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/* Definition of OR1K exceptions */
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/* Definition of OR1K exceptions */
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#define EXCEPT_RESET 0x0100
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#define EXCEPT_RESET 0x0100
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#define EXCEPT_BUSERR 0x0200
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#define EXCEPT_BUSERR 0x0200
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#define EXCEPT_DPF 0x0300
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#define EXCEPT_DPF 0x0300
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#define EXCEPT_IPF 0x0400
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#define EXCEPT_IPF 0x0400
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#define EXCEPT_LPINT 0x0500
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#define EXCEPT_TICK 0x0500
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#define EXCEPT_ALIGN 0x0600
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#define EXCEPT_ALIGN 0x0600
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#define EXCEPT_ILLEGAL 0x0700
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#define EXCEPT_ILLEGAL 0x0700
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#define EXCEPT_HPINT 0x0800
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#define EXCEPT_INT 0x0800
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#define EXCEPT_DTLBMISS 0x0900
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#define EXCEPT_DTLBMISS 0x0900
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#define EXCEPT_ITLBMISS 0x0a00
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#define EXCEPT_ITLBMISS 0x0a00
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#define EXCEPT_RANGE 0x0b00
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#define EXCEPT_RANGE 0x0b00
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#define EXCEPT_SYSCALL 0x0c00
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#define EXCEPT_SYSCALL 0x0c00
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#define EXCEPT_TRAP 0x0e00
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#define EXCEPT_TRAP 0x0e00
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/* Non maskable exceptions */
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/* Non maskable exceptions */
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#define IS_NME(E) ((E) == EXCEPT_RESET)
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#define IS_NME(E) ((E) == EXCEPT_RESET)
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#define EXCEPT_NAME(E) E == EXCEPT_RESET ? "Reset" : \
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#define EXCEPT_NAME(E) E == EXCEPT_RESET ? "Reset" : \
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E == EXCEPT_BUSERR ? "Bus Error" : \
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E == EXCEPT_BUSERR ? "Bus Error" : \
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E == EXCEPT_DPF ? "Data Page Fault" : \
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E == EXCEPT_DPF ? "Data Page Fault" : \
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E == EXCEPT_IPF ? "Insn Page Fault" : \
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E == EXCEPT_IPF ? "Insn Page Fault" : \
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E == EXCEPT_LPINT ? "Low Priority Interrupt" : \
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E == EXCEPT_TICK ? "Tick timer" : \
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E == EXCEPT_ALIGN ? "Alignment" : \
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E == EXCEPT_ALIGN ? "Alignment" : \
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E == EXCEPT_ILLEGAL ? "Illegal instruction" : \
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E == EXCEPT_ILLEGAL ? "Illegal instruction" : \
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E == EXCEPT_HPINT ? "High Priority Interrupt" : \
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E == EXCEPT_INT ? "Interrupt" : \
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E == EXCEPT_DTLBMISS ? "Data TLB Miss" : \
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E == EXCEPT_DTLBMISS ? "Data TLB Miss" : \
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E == EXCEPT_ITLBMISS ? "Insn TLB Miss" : \
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E == EXCEPT_ITLBMISS ? "Insn TLB Miss" : \
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E == EXCEPT_RANGE ? "Range" : \
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E == EXCEPT_RANGE ? "Range" : \
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E == EXCEPT_SYSCALL ? "System Call" : \
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E == EXCEPT_SYSCALL ? "System Call" : \
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E == EXCEPT_TRAP ? "Trap" : "Unknown"
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E == EXCEPT_TRAP ? "Trap" : "Unknown"
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extern struct _pending {
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extern struct _pending {
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int valid;
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int valid;
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int type;
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int type;
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unsigned long address;
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unsigned long address;
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unsigned long saved;
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unsigned long saved;
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} pending;
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} pending;
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/* Prototypes */
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/* Prototypes */
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void except_handle(int except, unsigned long ea);
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void except_handle(int except, unsigned long ea);
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/* Actually handles exception */
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/* Actually handles exception */
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void except_handle_backend (int except, unsigned long ea, unsigned long pc_saved);
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void except_handle_backend (int except, unsigned long ea, unsigned long pc_saved);
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/* Discards all pending exceptions */
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/* Discards all pending exceptions */
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void clear_pending_exception();
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void clear_pending_exception();
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#endif
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#endif
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