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;

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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}