/* loop-report.c. Or1ksim simple C loop program which reports changes.
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/* loop-report.c. Or1ksim simple C loop program which reports changes.
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Copyright (C) 1999-2006 OpenCores
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Copyright (C) 1999-2006 OpenCores
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Copyright (C) 2010 Embecosm Limited
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Copyright (C) 2010 Embecosm Limited
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Contributors various OpenCores participants
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Contributors various OpenCores participants
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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Contributor Jeremy Bennett <jeremy.bennett@embecosm.com>
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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 it
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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under the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at your option)
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Software Foundation; either version 3 of the License, or (at your option)
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any later version.
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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This program 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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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 for
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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more details.
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You should have received a copy of the GNU General Public License along
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You should have received a copy of the GNU General Public License along
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with this program. If not, see <http: www.gnu.org/licenses/>. */
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with this program. If not, see <http: www.gnu.org/licenses/>. */
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/* ----------------------------------------------------------------------------
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/* ----------------------------------------------------------------------------
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This code is commented throughout for use with Doxygen.
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This code is commented throughout for use with Doxygen.
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--------------------------------------------------------------------------*/
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--------------------------------------------------------------------------*/
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/* A program which initializes memory and SPR, then just loops. Used in
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/* A program which initializes memory and SPR, then just loops. Used in
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testing libor1ksim JTAG read functionality. */
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testing libor1ksim JTAG read functionality. */
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#include "support.h"
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#include "support.h"
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#include "spr-defs.h"
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#include "spr-defs.h"
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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/*!main program
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/*!main program
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We have two blocks of memory of interest (0x00000000 - 0x00200000,
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We have two blocks of memory of interest (0x00000000 - 0x00200000,
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0xffe0000 - 0xffffffff) and two SPRs of interest (MACLO, 0x2801 and MACHI,
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0xffe0000 - 0xffffffff) and two SPRs of interest (MACLO, 0x2801 and MACHI,
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0x2802). We monitor for any changes in the first 16 and last 16 bytes of
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0x2802). We monitor for any changes in the first 16 and last 16 bytes of
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each memory block, the middle 16 of the first memory block and both SPRs,
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each memory block, the middle 16 of the first memory block and both SPRs,
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having first initialized them to zero.
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having first initialized them to zero.
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We have to be careful about strobing. We sit in a loop looking for changes,
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We have to be careful about strobing. We sit in a loop looking for changes,
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but only print out the changes after we have had one loop with no changes.
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but only print out the changes after we have had one loop with no changes.
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@return The return code from the program (of no interest to us). */
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@return The return code from the program (of no interest to us). */
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/*---------------------------------------------------------------------------*/
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/*---------------------------------------------------------------------------*/
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int
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int
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main ()
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main ()
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{
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{
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/* Useful constants */
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/* Useful constants */
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unsigned char *b0_start_addr = (unsigned char *) 0x00000000;
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unsigned char *b0_start_addr = (unsigned char *) 0x00000000;
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unsigned char *b0_mid_addr = (unsigned char *) 0x00100000;
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unsigned char *b0_mid_addr = (unsigned char *) 0x00100000;
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unsigned char *b0_end_addr = (unsigned char *) 0x001ffff0;
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unsigned char *b0_end_addr = (unsigned char *) 0x001ffff0;
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unsigned char *b1_start_addr = (unsigned char *) 0xffe00000;
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unsigned char *b1_start_addr = (unsigned char *) 0xffe00000;
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unsigned char *b1_end_addr = (unsigned char *) 0xfffffff0;
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unsigned char *b1_end_addr = (unsigned char *) 0xfffffff0;
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/* General purpose */
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/* General purpose */
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unsigned long int r;
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unsigned long int r;
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int i;
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int i;
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/* Values remembered */
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/* Values remembered */
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unsigned long int maclo;
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unsigned long int maclo;
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unsigned long int machi;
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unsigned long int machi;
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unsigned char b0_start[16];
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unsigned char b0_start[16];
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unsigned char b0_mid[16];
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unsigned char b0_mid[16];
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unsigned char b0_end[16];
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unsigned char b0_end[16];
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unsigned char b1_start[16];
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unsigned char b1_start[16];
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unsigned char b1_end[16];
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unsigned char b1_end[16];
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/* Flags indicating change */
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/* Flags indicating change */
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int maclo_f;
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int maclo_f;
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int machi_f;
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int machi_f;
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int b0_start_f[16];
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int b0_start_f[16];
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int b0_mid_f[16];
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int b0_mid_f[16];
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int b0_end_f[16];
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int b0_end_f[16];
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int b1_start_f[16];
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int b1_start_f[16];
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int b1_end_f[16];
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int b1_end_f[16];
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int changed_since_print;
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int changed_since_print;
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/* Set the SR to have SUMRA bit set, so that we can access certain regs in
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/* Set the SR to have SUMRA bit set, so that we can access certain regs in
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user mode. */
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user mode. */
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r = mfspr (SPR_SR);
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r = mfspr (SPR_SR);
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mtspr (SPR_SR, r | SPR_SR_SUMRA);
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mtspr (SPR_SR, r | SPR_SR_SUMRA);
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/* Initialize remembered values and flags */
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/* Initialize remembered values and flags */
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maclo = 0;
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maclo = 0;
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machi = 0;
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machi = 0;
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maclo_f = 0;
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maclo_f = 0;
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machi_f = 0;
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machi_f = 0;
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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b0_start[i] = 0;
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b0_start[i] = 0;
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b0_mid[i] = 0;
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b0_mid[i] = 0;
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b0_end[i] = 0;
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b0_end[i] = 0;
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b1_start[i] = 0;
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b1_start[i] = 0;
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b1_end[i] = 0;
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b1_end[i] = 0;
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b0_start_f[i] = 0;
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b0_start_f[i] = 0;
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b0_mid_f[i] = 0;
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b0_mid_f[i] = 0;
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b0_end_f[i] = 0;
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b0_end_f[i] = 0;
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b1_start_f[i] = 0;
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b1_start_f[i] = 0;
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b1_end_f[i] = 0;
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b1_end_f[i] = 0;
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}
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}
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/* Set the values in SPR and memory */
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/* Set the values in SPR and memory */
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mtspr (SPR_MACLO, maclo);
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mtspr (SPR_MACLO, maclo);
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mtspr (SPR_MACHI, machi);
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mtspr (SPR_MACHI, machi);
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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b0_start_addr[i] = b0_start[i];
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b0_start_addr[i] = b0_start[i];
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b0_mid_addr[i] = b0_mid[i];
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b0_mid_addr[i] = b0_mid[i];
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b0_end_addr[i] = b0_end[i];
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b0_end_addr[i] = b0_end[i];
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b1_start_addr[i] = b1_start[i];
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b1_start_addr[i] = b1_start[i];
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b1_end_addr[i] = b1_end[i];
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b1_end_addr[i] = b1_end[i];
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}
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}
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/* Loop for ever checking if any values have changed. */
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/* Loop for ever checking if any values have changed. */
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changed_since_print = 0;
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changed_since_print = 0;
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while (1)
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while (1)
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{
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{
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int changed_this_loop = 0;
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int changed_this_loop = 0;
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/* Check SPRs */
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/* Check SPRs */
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if (mfspr (SPR_MACLO) != maclo)
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if (mfspr (SPR_MACLO) != maclo)
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{
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{
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maclo = mfspr (SPR_MACLO);
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maclo = mfspr (SPR_MACLO);
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maclo_f = 1;
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maclo_f = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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if (mfspr (SPR_MACHI) != machi)
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if (mfspr (SPR_MACHI) != machi)
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{
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{
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machi = mfspr (SPR_MACHI);
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machi = mfspr (SPR_MACHI);
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machi_f = 1;
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machi_f = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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/* Check memory blocks */
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/* Check memory blocks */
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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if (b0_start_addr[i] != b0_start[i])
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if (b0_start_addr[i] != b0_start[i])
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{
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{
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b0_start[i] = b0_start_addr[i];
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b0_start[i] = b0_start_addr[i];
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b0_start_f[i] = 1;
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b0_start_f[i] = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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if (b0_mid_addr[i] != b0_mid[i])
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if (b0_mid_addr[i] != b0_mid[i])
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{
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{
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b0_mid[i] = b0_mid_addr[i];
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b0_mid[i] = b0_mid_addr[i];
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b0_mid_f[i] = 1;
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b0_mid_f[i] = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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if (b0_end_addr[i] != b0_end[i])
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if (b0_end_addr[i] != b0_end[i])
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{
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{
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b0_end[i] = b0_end_addr[i];
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b0_end[i] = b0_end_addr[i];
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b0_end_f[i] = 1;
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b0_end_f[i] = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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if (b1_start_addr[i] != b1_start[i])
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if (b1_start_addr[i] != b1_start[i])
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{
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{
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b1_start[i] = b1_start_addr[i];
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b1_start[i] = b1_start_addr[i];
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b1_start_f[i] = 1;
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b1_start_f[i] = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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if (b1_end_addr[i] != b1_end[i])
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if (b1_end_addr[i] != b1_end[i])
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{
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{
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b1_end[i] = b1_end_addr[i];
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b1_end[i] = b1_end_addr[i];
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b1_end_f[i] = 1;
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b1_end_f[i] = 1;
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changed_since_print = 1;
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changed_since_print = 1;
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changed_this_loop = 1;
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changed_this_loop = 1;
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}
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}
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}
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}
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/* Only print out if there have been changes since the last print, but
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/* Only print out if there have been changes since the last print, but
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not during this loop. This makes sure we don't strobe with writing
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not during this loop. This makes sure we don't strobe with writing
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from JTAG. */
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from JTAG. */
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if (changed_since_print && !changed_this_loop)
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if (changed_since_print && !changed_this_loop)
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{
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{
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/* Print any changed SPRs */
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/* Print any changed SPRs */
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if (maclo_f)
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if (maclo_f)
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{
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{
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printf ("New MACLO 0x%08lx\n", maclo);
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printf ("New MACLO 0x%08lx\n", maclo);
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maclo_f = 0;
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maclo_f = 0;
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}
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}
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if (machi_f)
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if (machi_f)
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{
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{
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printf ("New MACHI 0x%08lx\n", machi);
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printf ("New MACHI 0x%08lx\n", machi);
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machi_f = 0;
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machi_f = 0;
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}
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}
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/* Print any changed memory. Each in its own loop to give ascending
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/* Print any changed memory. Each in its own loop to give ascending
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order. */
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order. */
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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if (b0_start_f[i])
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if (b0_start_f[i])
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{
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{
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printf ("New byte at 0x%08lx = 0x%02x\n",
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printf ("New byte at 0x%08lx = 0x%02x\n",
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(unsigned long int) &b0_start_addr[i], b0_start[i]);
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(unsigned long int) &b0_start_addr[i], b0_start[i]);
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b0_start_f[i] = 0;
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b0_start_f[i] = 0;
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}
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}
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}
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}
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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if (b0_mid_f[i])
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if (b0_mid_f[i])
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{
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{
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printf ("New byte at 0x%08lx = 0x%02x\n",
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printf ("New byte at 0x%08lx = 0x%02x\n",
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(unsigned long int) &b0_mid_addr[i], b0_mid[i]);
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(unsigned long int) &b0_mid_addr[i], b0_mid[i]);
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b0_mid_f[i] = 0;
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b0_mid_f[i] = 0;
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}
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}
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}
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}
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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if (b0_end_f[i])
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if (b0_end_f[i])
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{
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{
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printf ("New byte at 0x%08lx = 0x%02x\n",
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printf ("New byte at 0x%08lx = 0x%02x\n",
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(unsigned long int) &b0_end_addr[i], b0_end[i]);
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(unsigned long int) &b0_end_addr[i], b0_end[i]);
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b0_end_f[i] = 0;
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b0_end_f[i] = 0;
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}
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}
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}
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}
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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if (b1_start_f[i])
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if (b1_start_f[i])
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{
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{
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printf ("New byte at 0x%08lx = 0x%02x\n",
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printf ("New byte at 0x%08lx = 0x%02x\n",
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(unsigned long int) &b1_start_addr[i], b1_start[i]);
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(unsigned long int) &b1_start_addr[i], b1_start[i]);
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b1_start_f[i] = 0;
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b1_start_f[i] = 0;
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}
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}
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}
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}
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for (i = 0; i < 16; i++)
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for (i = 0; i < 16; i++)
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{
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{
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if (b1_end_f[i])
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if (b1_end_f[i])
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{
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{
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printf ("New byte at 0x%08lx = 0x%02x\n",
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printf ("New byte at 0x%08lx = 0x%02x\n",
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(unsigned long int) &b1_end_addr[i], b1_end[i]);
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(unsigned long int) &b1_end_addr[i], b1_end[i]);
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b1_end_f[i] = 0;
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b1_end_f[i] = 0;
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}
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}
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}
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}
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changed_since_print = 0; /* Start it all again */
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changed_since_print = 0; /* Start it all again */
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}
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}
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}
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}
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} /* main () */
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} /* main () */
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