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[/] [openrisc/] [trunk/] [or1ksim/] [testsuite/] [test-code-or1k/] [support/] [int.c] - Rev 500
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/* int.c -- Interrupt handling for Or1ksim tests. Copyright (C) 2001 Simon Srot, srot@opencores.org Copyright (C) 2008, 2010 Embecosm Limited Contributor Simon Srot <srot@opencores.org> Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> This file is part of OpenRISC 1000 Architectural Simulator. This program 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 3 of the License, or (at your option) any later version. This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ /* ---------------------------------------------------------------------------- This code is commented throughout for use with Doxygen. --------------------------------------------------------------------------*/ /* This file is part of test microkernel for OpenRISC 1000. */ #include "support.h" #include "spr-defs.h" #include "int.h" /* Interrupt handlers table */ struct ihnd int_handlers[MAX_INT_HANDLERS]; /* Initialize routine */ int int_init() { int i; for(i = 0; i < MAX_INT_HANDLERS; i++) { int_handlers[i].handler = 0; int_handlers[i].arg = 0; } return 0; } /* Add interrupt handler */ int int_add(unsigned long vect, void (* handler)(void *), void *arg) { if(vect >= MAX_INT_HANDLERS) return -1; int_handlers[vect].handler = handler; int_handlers[vect].arg = arg; mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (0x00000001L << vect)); return 0; } /* Disable interrupt */ int int_disable(unsigned long vect) { if(vect >= MAX_INT_HANDLERS) return -1; mtspr(SPR_PICMR, mfspr(SPR_PICMR) & ~(0x00000001L << vect)); return 0; } /* Enable interrupt */ int int_enable(unsigned long vect) { if(vect >= MAX_INT_HANDLERS) return -1; mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (0x00000001L << vect)); return 0; } /* Main interrupt handler */ void int_main() { unsigned long picsr = mfspr(SPR_PICSR); unsigned long i = 0; mtspr(SPR_PICSR, 0); while(i < 32) { if((picsr & (0x01L << i)) && (int_handlers[i].handler != 0)) { (*int_handlers[i].handler)(int_handlers[i].arg); mtspr(SPR_PICSR, mfspr(SPR_PICSR) & ~(0x00000001L << i)); } i++; } }
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