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 <cctype>
32#include <cstdio>
33#include <list>
34#include <string>
35
36#include "base/cprintf.hh"
37#include "base/loader/hex_file.hh"
38#include "base/loader/symtab.hh"
39#include "mem/translating_port.hh"
40
41using namespace std;
42/*
43 * Load a Hex File into memory. Currently only used with MIPS
44 * BARE_IRON mode. A hex file consists of [Address Data] tuples that
45 * get directly loaded into physical memory. The address specified is
46 * a word address (i.e., to get the byte address, shift left by 2) The
47 * data is a full 32-bit hex value.
48*/
49HexFile::HexFile(const string _filename)
50 : filename(_filename)
51{
52 fp = fopen(filename.c_str(), "r");
53 if (fp == NULL)
54 panic("Unable to open %s\n", filename.c_str());
55}
56
57HexFile::~HexFile()
58{
59}
60
61bool
62HexFile::loadSections(Port *memPort)
63{
64 char Line[64];
65 Addr MemAddr;
66 uint32_t Data;
67 while (!feof(fp)) {
68 fgets(Line, 64, fp);
69 parseLine(Line, &MemAddr, &Data);
70 if (MemAddr != 0) {
71 // Now, write to memory
72 memPort->writeBlob(MemAddr << 2, (uint8_t *)&Data, sizeof(Data));
73 }
74 }
75 return true;
76}
77
78void
79HexFile::parseLine(char *Str, Addr *A, uint32_t *D)
80{
81 int i = 0;
82 bool Flag = false;
83 *A = 0;
84 *D = 0;
85 int Digit = 0;
86 unsigned Number = 0;
87
88 /* Skip white spaces */
89 while (Str[i] != '\0' && Str[i]==' ')
90 i++;
91
92 /* Ok, we're at some character...process things */
93 while (Str[i] != '\0') {
94 if (Str[i] >= '0' && Str[i] <= '9') {
95 Digit = Str[i] - '0';
96 } else if (Str[i] >= 'a' && Str[i] <= 'f') {
97 Digit = Str[i] - 'a' + 10;
98 } else if (Str[i] >= 'A' && Str[i] <= 'F') {
99 Digit=Str[i]-'A'+10;
100 } else if (Str[i] == ' ' || Str[i] == '\n') {
101 if (Number == 0)
102 return;
103 if (Flag == false) {
104 *A = Number;
105 Number = 0;
106 Flag = true;
107 } else {
108 *D = Number;
109 return;
110 }
111 } else {
112 // Ok, we've encountered a non-hex character, cannot be a
113 // valid line, skip and return 0's
114 *A = 0;
115 *D = 0;
116 return;
117 }
118
119 Number <<= 4;
120 Number += Digit;
121 i++;
122 }
123
124 if (Flag != true) {
125 *A = 0;
126 *D = 0;
127 } else {
128 *D = Number;
129 }
130}
131
132void
133HexFile::close()
134{
135 fclose(fp);
136}