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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [redboot/] [v2_0/] [src/] [mcmp.c] - Rev 27
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//========================================================================== // // mcmp.c // // RedBoot memory compare (mcmp) routine // //========================================================================== //####ECOSGPLCOPYRIGHTBEGIN#### // ------------------------------------------- // This file is part of eCos, the Embedded Configurable Operating System. // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc. // Copyright (C) 2002 Gary Thomas // // eCos 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 2 or (at your option) any later version. // // eCos 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 eCos; if not, write to the Free Software Foundation, Inc., // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. // // As a special exception, if other files instantiate templates or use macros // or inline functions from this file, or you compile this file and link it // with other works to produce a work based on this file, this file does not // by itself cause the resulting work to be covered by the GNU General Public // License. However the source code for this file must still be made available // in accordance with section (3) of the GNU General Public License. // // This exception does not invalidate any other reasons why a work based on // this file might be covered by the GNU General Public License. // // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc. // at http://sources.redhat.com/ecos/ecos-license/ // ------------------------------------------- //####ECOSGPLCOPYRIGHTEND#### //========================================================================== //#####DESCRIPTIONBEGIN#### // // Author(s): gthomas // Contributors: gthomas // Date: 2002-08-06 // Purpose: // Description: // // This code is part of RedBoot (tm). // //####DESCRIPTIONEND#### // //========================================================================== #include <redboot.h> RedBoot_cmd("mcmp", "Compare two blocks of memory", "-s <location> -d <location> -l <length> [-1|-2|-4]", do_mcmp ); void do_mcmp(int argc, char *argv[]) { // Fill a region of memory with a pattern struct option_info opts[6]; unsigned long src_base, dst_base; long len; bool src_base_set, dst_base_set, len_set; bool set_32bit, set_16bit, set_8bit; init_opts(&opts[0], 's', true, OPTION_ARG_TYPE_NUM, (void **)&src_base, (bool *)&src_base_set, "base address"); init_opts(&opts[1], 'l', true, OPTION_ARG_TYPE_NUM, (void **)&len, (bool *)&len_set, "length"); init_opts(&opts[2], 'd', true, OPTION_ARG_TYPE_NUM, (void **)&dst_base, (bool *)&dst_base_set, "base address"); init_opts(&opts[3], '4', false, OPTION_ARG_TYPE_FLG, (void *)&set_32bit, (bool *)0, "fill 32 bit units"); init_opts(&opts[4], '2', false, OPTION_ARG_TYPE_FLG, (void **)&set_16bit, (bool *)0, "fill 16 bit units"); init_opts(&opts[5], '1', false, OPTION_ARG_TYPE_FLG, (void **)&set_8bit, (bool *)0, "fill 8 bit units"); if (!scan_opts(argc, argv, 1, opts, 6, 0, 0, "")) { return; } if (!src_base_set || !dst_base_set || !len_set) { diag_printf("usage: mcmp -s <addr> -d <addr> -l <length> [-1|-2|-4]\n"); return; } // No checks here if (set_8bit) { // Compare 8 bits at a time while ((len -= sizeof(cyg_uint8)) >= 0) { if (*((cyg_uint8 *)src_base)++ != *((cyg_uint8 *)dst_base)++) { ((cyg_uint8 *)src_base)--; ((cyg_uint8 *)dst_base)--; diag_printf("Buffers don't match - %p=0x%02x, %p=0x%02x\n", src_base, *((cyg_uint8 *)src_base), dst_base, *((cyg_uint8 *)dst_base)); return; } } } else if (set_16bit) { // Compare 16 bits at a time while ((len -= sizeof(cyg_uint16)) >= 0) { if (*((cyg_uint16 *)src_base)++ != *((cyg_uint16 *)dst_base)++) { ((cyg_uint16 *)src_base)--; ((cyg_uint16 *)dst_base)--; diag_printf("Buffers don't match - %p=0x%04x, %p=0x%04x\n", src_base, *((cyg_uint16 *)src_base), dst_base, *((cyg_uint16 *)dst_base)); return; } } } else { // Default - 32 bits while ((len -= sizeof(cyg_uint32)) >= 0) { if (*((cyg_uint32 *)src_base)++ != *((cyg_uint32 *)dst_base)++) { ((cyg_uint32 *)src_base)--; ((cyg_uint32 *)dst_base)--; diag_printf("Buffers don't match - %p=0x%08x, %p=0x%08x\n", src_base, *((cyg_uint32 *)src_base), dst_base, *((cyg_uint32 *)dst_base)); return; } } } }
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