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[/] [openrisc/] [trunk/] [or1ksim/] [testsuite/] [test-code-or1k/] [loop/] [loop-init.c] - Rev 165
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/* loop-init.c. Or1ksim simple C loop program which initializes data. Copyright (C) 1999-2006 OpenCores Copyright (C) 2010 Embecosm Limited Contributors various OpenCores participants 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. --------------------------------------------------------------------------*/ /* A program which initializes memory and SPR, then just loops. Used in testing libor1ksim JTAG read functionality. */ #include "support.h" #include "spr-defs.h" int main () { unsigned long int r; int i; /* Set the SR to have SUMRA bit set, so that we can access certain regs in user mode. */ r = mfspr (SPR_SR); mtspr (SPR_SR, r | SPR_SR_SUMRA); /* Set the MACLO and MACHI regs */ mtspr (SPR_MACLO, 0xdeadbeef); mtspr (SPR_MACHI, 0xcafebabe); /* Set main memory starting at 0x100000. Set at later intervals 2^16 bytes further on as well. */ for (i = 0; i < 16; i++) { unsigned char *block0 = (unsigned char *) (0x100000 + i); unsigned char *block1 = (unsigned char *) (0x110000 + i); unsigned char *block2 = (unsigned char *) (0x120000 + i); *block0 = 16 + i; *block1 = 32 + i; *block2 = 48 + i; } /* Set the top of each memory block and the bottom of the second memory block to a defined sequence. */ unsigned char *mem1top = (unsigned char *) (0x001ffff8); unsigned char *mem2bot = (unsigned char *) (0xffe00000); unsigned char *mem2top = (unsigned char *) (0xfffffff8); mem1top[0] = 0xde; mem1top[1] = 0xad; mem1top[2] = 0xbe; mem1top[3] = 0xef; mem1top[4] = 0xca; mem1top[5] = 0xfe; mem1top[6] = 0xba; mem1top[7] = 0xbe; mem2bot[0] = 0xde; mem2bot[1] = 0xad; mem2bot[2] = 0xbe; mem2bot[3] = 0xef; mem2bot[4] = 0xca; mem2bot[5] = 0xfe; mem2bot[6] = 0xba; mem2bot[7] = 0xbe; mem2top[0] = 0xde; mem2top[1] = 0xad; mem2top[2] = 0xbe; mem2top[3] = 0xef; mem2top[4] = 0xca; mem2top[5] = 0xfe; mem2top[6] = 0xba; mem2top[7] = 0xbe; /* Loop for ever doing stuff */ while (1) { } } /* main () */
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