/* sprs.h -- OR1K architecture specific special-purpose registers
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/* sprs.h -- OR1K architecture specific special-purpose registers
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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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#include "spr_defs.h"
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#include "spr_defs.h"
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typedef unsigned long sprword;
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typedef unsigned long sprword;
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/* Prototypes */
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/* Prototypes */
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inline void mtspr(const int regno, const sprword value);
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inline void mtspr(const int regno, const sprword value);
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inline sprword mfspr_(const int regno);
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inline sprword mfspr_(const int regno);
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#ifdef DEBUGMOD_OFF
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#ifdef DEBUGMOD_OFF
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extern sprword sprs[MAX_SPRS];
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extern sprword sprs[MAX_SPRS];
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extern int cont_run; /* defined in toplevel.c */
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extern int cont_run; /* defined in toplevel.c */
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#define mfspr(regno)\
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#define mfspr(regno)\
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((regno == SPR_SR && temp_disable_except > 0)?(sprs[regno] & ~SPR_SR_EXR)\
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((regno == SPR_SR && temp_disable_except > 0)?(sprs[regno] & ~SPR_SR_EXR)\
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:((regno < MAX_SPRS)?(sprs[regno])\
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:((regno < MAX_SPRS)?(sprs[regno])\
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:((printf("\nABORT: read out of SPR range %08X\n", regno),\
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:((printf("\nABORT: read out of SPR range %08X\n", regno),\
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cont_run = 0))))
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cont_run = 0))))
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#else /* DEBUGMOD_OFF */
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#else /* DEBUGMOD_OFF */
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#define mfspr(regno) mfspr_(regno)
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#define mfspr(regno) mfspr_(regno)
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#endif /* DEBUGMOD_OFF */
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#endif /* DEBUGMOD_OFF */
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inline void setsprbit(const int regno, const int bitnum, const unsigned long bitvalue);
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inline void setsprbit(const int regno, const int bitnum, const unsigned long bitvalue);
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inline int getsprbit(const int regno, const int bitnum);
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inline int getsprbit(const int regno, const int bitnum);
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void sprs_status();
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void sprs_status();
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#include "sim-config.h"
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/* Ugly, but fast */
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/* Get a specific SPR. */
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static inline sprword
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mfspr_(const int regno)
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{
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extern unsigned long reg[32];
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extern unsigned long pc;
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extern unsigned long pcprev;
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extern sprword sprs[MAX_SPRS];
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switch (regno) {
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case SPR_SR:
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/* Exceptions are always enabled */
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return sprs[regno] | SPR_SR_EXR;
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case SPR_NPC:
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return pc;
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case SPR_PPC:
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return pcprev;
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default:
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/* Links to GPRS */
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if(regno >= 0x0400 && regno < 0x0420)
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return reg[regno - 0x0400];
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else if (regno < MAX_SPRS)
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return sprs[regno];
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}
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if (config.sim.verbose)
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printf ("WARNING: read out of SPR range %08X\n", regno);
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return 0;
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}
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