/************************************************************************ * * compare.c * * Monitor command to compare two memory areas. * * compare * * ###################################################################### * * mips_start_of_legal_notice * * Copyright (c) 2004 MIPS Technologies, Inc. All rights reserved. * * * Unpublished rights (if any) reserved under the copyright laws of the * United States of America and other countries. * * This code is proprietary to MIPS Technologies, Inc. ("MIPS * Technologies"). Any copying, reproducing, modifying or use of this code * (in whole or in part) that is not expressly permitted in writing by MIPS * Technologies or an authorized third party is strictly prohibited. At a * minimum, this code is protected under unfair competition and copyright * laws. Violations thereof may result in criminal penalties and fines. * * MIPS Technologies reserves the right to change this code to improve * function, design or otherwise. MIPS Technologies does not assume any * liability arising out of the application or use of this code, or of any * error or omission in such code. Any warranties, whether express, * statutory, implied or otherwise, including but not limited to the implied * warranties of merchantability or fitness for a particular purpose, are * excluded. Except as expressly provided in any written license agreement * from MIPS Technologies or an authorized third party, the furnishing of * this code does not give recipient any license to any intellectual * property rights, including any patent rights, that cover this code. * * This code shall not be exported, reexported, transferred, or released, * directly or indirectly, in violation of the law of any country or * international law, regulation, treaty, Executive Order, statute, * amendments or supplements thereto. Should a conflict arise regarding the * export, reexport, transfer, or release of this code, the laws of the * United States of America shall be the governing law. * * This code constitutes one or more of the following: commercial computer * software, commercial computer software documentation or other commercial * items. If the user of this code, or any related documentation of any * kind, including related technical data or manuals, is an agency, * department, or other entity of the United States government * ("Government"), the use, duplication, reproduction, release, * modification, disclosure, or transfer of this code, or any related * documentation of any kind, is restricted in accordance with Federal * Acquisition Regulation 12.212 for civilian agencies and Defense Federal * Acquisition Regulation Supplement 227.7202 for military agencies. The use * of this code by the Government is further restricted in accordance with * the terms of the license agreement(s) and/or applicable contract terms * and conditions covering this code from MIPS Technologies or an authorized * third party. * * * * * mips_end_of_legal_notice * * ************************************************************************/ /************************************************************************ * Include files ************************************************************************/ #include #include #include #include #include #include /************************************************************************ * Definitions ************************************************************************/ /************************************************************************ * Public variables ************************************************************************/ /************************************************************************ * Static variables ************************************************************************/ /************************************************************************ * Static function prototypes ************************************************************************/ static UINT32 get_options( UINT32 argc, char **argv, UINT32 *addr1, UINT32 *addr2, UINT32 *length); /************************************************************************ * Implementation : Static functions ************************************************************************/ /************************************************************************ * compare ************************************************************************/ static MON_FUNC(compare) { UINT32 addr1; UINT32 addr2; UINT32 length; char *p1, *p2; UINT32 rc; rc = get_options( argc, argv, &addr1, &addr2, &length ); if( rc != OK ) return rc; if (!length) return OK; printf("Comparing memory area 0x%08X..0x%08x with 0x%08X..0x%08x.\n", addr1, addr1 + length - 1, addr2, addr2 + length - 1); p1 = (char *) addr1; p2 = (char *) addr2; while ((int)--length >= 0) if (*p1++ != *p2++) { printf("The areas are not identical:\n"); printf("First difference found at addresses 0x%08X, 0x%08X.\n", (UINT32)--p1, (UINT32)--p2); return OK; } printf("The memory areas are identical.\n"); return OK; } /************************************************************************ * get_options ************************************************************************/ static UINT32 get_options( UINT32 argc, char **argv, UINT32 *addr1, UINT32 *addr2, UINT32 *length) { t_shell_option decode; UINT32 type; bool ok = TRUE; bool addr1_valid = FALSE; bool addr2_valid = FALSE; bool length_valid = FALSE; UINT32 arg; UINT32 error = SHELL_ERROR_SYNTAX; for( arg = 1; ok && (arg < argc) && shell_decode_token( argv[arg], &type, &decode ); arg++ ) { switch( type ) { case SHELL_TOKEN_OPTION : /* compare takes no options */ error = SHELL_ERROR_OPTION; shell_error_data = argv[arg]; ok = FALSE; break; case SHELL_TOKEN_NUMBER : if (!addr1_valid) { *addr1 = decode.number; addr1_valid = TRUE; } else if (!addr2_valid) { *addr2 = decode.number; addr2_valid = TRUE; } else if (!length_valid) { *length = decode.number; length_valid = TRUE; } else ok = FALSE; break; default : ok = FALSE; break; } } if( !length_valid ) ok = FALSE; if( !ok ) return error; else { error = sys_validate_range( *addr1, *length, sizeof(UINT8), FALSE ); return ( error != OK ) ? error : sys_validate_range( *addr2, *length, sizeof(UINT8), FALSE ); } } /************************************************************************ * cmd stuff ************************************************************************/ /* Command definition for compare */ static t_cmd cmd_def = { "compare", compare, "compare ", "Compares the two specified memory areas. If a difference is\n" "encountered during the compare, the address of the first mis-match\n" "will be reported.", NULL, 0, FALSE }; /************************************************************************ * Implementation : Public functions ************************************************************************/ /************************************************************************ * * shell_compare_init * Description : * ------------- * * Initialise command * * Return values : * --------------- * * void * ************************************************************************/ t_cmd * shell_compare_init( void ) { return &cmd_def; }
