hex_file.cc revision 5222
1/* 2 * Copyright (c) 2007 MIPS Technologies, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 * Authors: Jaidev Patwardhan 29 */ 30 31#include <list> 32#include <string> 33 34#include <sys/types.h> 35#include <sys/mman.h> 36#include <fcntl.h> 37#include <stdio.h> 38#include <unistd.h> 39 40#include "base/cprintf.hh" 41#include "base/loader/hex_file.hh" 42#include "base/loader/symtab.hh" 43 44 45#include "mem/translating_port.hh" 46 47using namespace std; 48/* Load a Hex File into memory. 49 Currently only used with MIPS BARE_IRON mode. 50 A hex file consists of [Address Data] tuples that get directly loaded into 51 physical memory. The address specified is a word address (i.e., to get the byte address, shift left by 2) 52 The data is a full 32-bit hex value. 53*/ 54HexFile::HexFile(const string _filename) 55 : filename(_filename) 56{ 57 fp = fopen(filename.c_str(),"r"); 58 if(fp == NULL) 59 { 60 panic("Unable to open %s\n",filename.c_str()); 61 } 62 63} 64 65HexFile::~HexFile() 66{ 67} 68 69 70bool 71HexFile::loadSections(Port *memPort, Addr addrMask) 72{ 73 char Line[64]; 74 Addr MemAddr; 75 uint32_t Data; 76 while(!feof(fp)) 77 { 78 fgets(Line,64,fp); 79 parseLine(Line,&MemAddr,&Data); 80 // printf("Hex:%u\n",Data); 81 82 if(MemAddr != 0) 83 { 84 // Now, write to memory 85 memPort->writeBlob(MemAddr<<2,(uint8_t *)&Data,sizeof(Data)); 86 } 87 } 88 return true; 89} 90void HexFile::parseLine(char *Str,Addr *A, uint32_t *D) 91{ 92 int i=0; 93 bool Flag = false; 94 *A = 0; 95 *D = 0; 96 int Digit = 0; 97 unsigned Number = 0; 98 /* Skip white spaces */ 99 while(Str[i] != '\0' && Str[i]==' ') 100 i++; 101 102 /* Ok, we're at some character...process things */ 103 while(Str[i] != '\0') 104 { 105 if(Str[i]>='0' && Str[i]<='9') 106 { 107 Digit=Str[i]-'0'; 108 } 109 else if(Str[i]>='a' && Str[i]<='f') 110 { 111 Digit=Str[i]-'a'+10; 112 } 113 else if(Str[i]>='A' && Str[i]<='F') 114 { 115 Digit=Str[i]-'A'+10; 116 } 117 else if(Str[i] == ' ' || Str[i]=='\n') 118 { 119 if(Number == 0) 120 return; 121 if(Flag == false) 122 { 123 *A = Number; 124 Number = 0; 125 Flag = true; 126 } 127 else 128 { 129 *D = Number; 130 return; 131 } 132 } 133 else 134 { 135 // Ok, we've encountered a non-hex character, cannot be a valid line, skip and return 0's 136 *A = 0; 137 *D = 0; 138 return; 139 } 140 Number<<=4; 141 Number+=Digit; 142 i++; 143 144 } 145 if(Flag != true) 146 { 147 *A = 0; 148 *D = 0; 149 } 150 else 151 *D = Number; 152 153} 154 155 156 157void 158HexFile::close() 159{ 160 fclose(fp); 161} 162