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annotate packages/redboot/current/src/load.c @ 126:518f42066aba ecos-sw-2000-09-19

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Merge from eCos master repository on 2000-09-19-06:25:26-BST
author jlarmour
date Tue, 19 Sep 2000 05:53:51 +0000
parents 0ec04793409a
children 0ae0bc38e387
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1 //==========================================================================
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2 //
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3 // load.c
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4 //
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5 // RedBoot file/image loader
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2000-07-14
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37 // Purpose:
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38 // Description:
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39 //
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40 // This code is part of RedBoot (tm).
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41 //
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42 //####DESCRIPTIONEND####
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43 //
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44 //==========================================================================
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45
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46 #include <redboot.h>
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47
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48 // Buffer used by redboot_getc
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49 getc_info_t getc_info;
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50
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51
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52 // Exported CLI function
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53 RedBoot_cmd("load",
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54 "Load a file",
117
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55 "[-v] [-r] [-b <mem_addr>] <file_name>",
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56 do_load
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57 );
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58
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59 static void
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60 load_elf_image(int (*getc)(void))
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61 {
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62 printf("ELF images not supported\n");
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63 }
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64
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65 //
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66 // Scan a string of hex bytes and update the checksum
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67 //
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68 static long
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69 _hex2(int (*getc)(void), int len, long *sum)
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70 {
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71 int val, byte;
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72 char c1, c2;
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73
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74 val = 0;
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75 while (len-- > 0) {
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76 c1 = (*getc)();
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77 c2 = (*getc)();
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78 if (_is_hex(c1) && _is_hex(c2)) {
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79 val <<= 8;
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80 byte = (_from_hex(c1)<<4) | _from_hex(c2);
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81 val |= byte;
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82 if (sum) {
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83 *sum += byte;
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84 }
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85 } else {
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86 return (-1);
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87 }
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88 }
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89 return (val);
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90 }
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91
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92 //
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93 // Process a set of S-records, loading the contents into memory.
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94 // Note: if a "base" value is provided, the data will be relocated
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95 // relative to that location. Of course, this can only work for
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96 // the first section of the data, so if there are non-contiguous
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97 // pieces of data, they will end up relocated in the same fashion.
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98 // Because of this, "base" probably only makes sense for a set of
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99 // data which has only one section, e.g. a ROM image.
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100 //
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101 #define MAX_LINE 80
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102 static void
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103 load_srec_image(int (*getc)(void), unsigned long base)
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104 {
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105 char line[MAX_LINE];
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106 char *lp;
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107 int c, len;
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108 long offset = 0, count, sum, val, cksum;
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109 unsigned char *addr, *base_addr;
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110 char type;
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111 bool first_addr = true;
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112 unsigned long addr_offset = 0;
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113 unsigned long highest_address = 0;
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114 unsigned long lowest_address = 0xFFFFFFFF;
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115
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116 while ((c = (*getc)()) > 0) {
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117 lp = line; len = 0;
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118 // Start of line
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119 if (c != 'S') {
117
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120 printf("Invalid S-record at offset %p, input: %c\n",
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121 (void *)offset, c);
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122 return;
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123 }
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124 type = (*getc)();
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125 offset += 2;
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126 sum = 0;
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127 if ((count = _hex2(getc, 1, &sum)) < 0) {
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128 printf("Bad S-record count at offset %p\n", (void *)offset);
115
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129 return;
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130 }
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131 offset += 1;
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132 switch (type) {
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133 case '0':
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134 break;
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135 case '1':
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136 case '2':
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137 case '3':
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138 base_addr = addr = (unsigned char *)_hex2(getc, (type-'1'+2), &sum);
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139 offset += (type-'1'+2);
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140 if (first_addr) {
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141 if (base) {
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142 addr_offset = (unsigned long)base - (unsigned long)addr;
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143 printf("Address offset = %p\n", (void *)addr_offset);
115
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144 } else {
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145 addr_offset = 0;
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146 }
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147 first_addr = false;
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148 }
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149 addr += addr_offset;
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150 if ((unsigned long)(addr-addr_offset) < lowest_address) {
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151 lowest_address = (unsigned long)(addr - addr_offset);
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152 }
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153 if ((addr < ram_start) || (addr > ram_end)) {
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154 printf("Attempt to load S-record data to address: %p [not in RAM]\n", addr);
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155 return;
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156 }
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157 count -= ((type-'1'+2)+1);
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158 offset += count;
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159 while (count-- > 0) {
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160 val = _hex2(getc, 1, &sum);
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161 *addr++ = val;
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162 }
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163 cksum = _hex2(getc, 1, 0);
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164 offset += 1;
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165 sum = sum & 0xFF;
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166 cksum = (~cksum & 0xFF);
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167 if (cksum != sum) {
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168 printf("*** Warning! Checksum failure - Addr: %lx, %02lX <> %02lX\n",
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169 (unsigned long)base_addr, sum, cksum);
126
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170 return;
115
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171 }
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172 if ((unsigned long)(addr-addr_offset) > highest_address) {
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173 highest_address = (unsigned long)(addr - addr_offset);
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174 }
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175 break;
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176 case '7':
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177 case '8':
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178 case '9':
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179 addr = (unsigned char *)_hex2(getc, ('9'-type+2), &sum);
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180 offset += ('9'-type+2);
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181 entry_address = (unsigned long *)addr;
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182 printf("Entry point: %p, address range: %p-%p\n",
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183 entry_address, (void *)lowest_address, (void *)highest_address);
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184 return;
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185 default:
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186 printf("Invalid S-record at offset 0x%lx, type: %x\n",
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187 (unsigned long)offset, type);
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188 return;
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189 }
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190 while ((c = (*getc)()) != '\n') offset++;
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191 }
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192 }
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193
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194
124
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195 int
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196 redboot_getc(void)
115
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197 {
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198 static char spin[] = "|/-\\|-";
124
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199 if (getc_info.avail < 0) {
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200 return -1;
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201 }
115
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202 if (getc_info.avail == 0) {
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203 if (getc_info.verbose) {
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204 printf("%c\b", spin[getc_info.tick++]);
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205 if (getc_info.tick >= sizeof(spin)) {
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206 getc_info.tick = 0;
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207 }
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208 }
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209 if (getc_info.len < BUF_SIZE) {
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210 // No more data available
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211 if (getc_info.verbose) printf("\n");
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212 return -1;
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213 }
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214 getc_info.bufp = getc_info.buf;
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215 getc_info.len = (*getc_info.fun)(getc_info.bufp, BUF_SIZE, &getc_info.err);
117
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216 if ((getc_info.avail = getc_info.len) <= 0) {
115
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217 if (getc_info.verbose) printf("\n");
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218 return -1;
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219 }
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220 }
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221 getc_info.avail--;
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222 return *getc_info.bufp++;
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223 }
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224
124
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225 void
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226 redboot_getc_init(int (*fun)(char *, int, int *), int verbose)
115
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227 {
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228 getc_info.avail = 0;
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229 getc_info.len = BUF_SIZE;
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230 getc_info.fun = fun;
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231 getc_info.verbose = verbose;
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232 getc_info.tick = 0;
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233 }
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234
124
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235 void
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236 redboot_getc_rewind(void)
115
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237 {
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238 getc_info.bufp = getc_info.buf;
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239 getc_info.avail = getc_info.len;
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240 }
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241
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242 #define MODE_TFTP 0
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243 #define MODE_ZMODEM 1
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244
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245 void
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246 do_load(int argc, char *argv[])
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247 {
126
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248 int res, num_options;
115
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249 int mode;
117
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250 bool verbose, raw;
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251 bool base_addr_set, mode_str_set;
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252 char *mode_str;
115
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253 #ifdef CYGPKG_REDBOOT_NETWORKING
126
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254 int i, err;
115
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255 struct sockaddr_in host;
117
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256 bool hostname_set;
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257 char *hostname;
115
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258 #endif
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259 unsigned long base = 0;
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260 char type[4];
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261 char *filename = 0;
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262 char *usage = "usage: load <file_name> [-r] [-v] [-h <host>] [-m {TFTP | ZMODEM}] [-b <base_address>]\n";
117
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263 struct option_info opts[5];
115
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264
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265 #ifdef CYGPKG_REDBOOT_NETWORKING
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266 memset((char *)&host, 0, sizeof(host));
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267 host.sin_len = sizeof(host);
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268 host.sin_family = AF_INET;
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269 host.sin_addr = my_bootp_info.bp_siaddr;
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270 host.sin_port = 0;
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271 #endif
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272 #ifdef CYGPKG_REDBOOT_NETWORKING
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273 mode = MODE_TFTP;
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274 #else
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275 mode = MODE_ZMODEM;
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276 #endif
117
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277
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278 init_opts(&opts[0], 'v', false, OPTION_ARG_TYPE_FLG,
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279 (void **)&verbose, 0, "verbose");
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280 init_opts(&opts[1], 'r', false, OPTION_ARG_TYPE_FLG,
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281 (void **)&raw, 0, "load raw data");
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282 init_opts(&opts[2], 'b', true, OPTION_ARG_TYPE_NUM,
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283 (void **)&base, (bool *)&base_addr_set, "load address");
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284 init_opts(&opts[3], 'm', true, OPTION_ARG_TYPE_STR,
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285 (void **)&mode_str, (bool *)&mode_str_set, "download mode (TFTP or ZMODEM)");
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286 num_options = 4;
115
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287 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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288 init_opts(&opts[4], 'h', true, OPTION_ARG_TYPE_STR,
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289 (void **)&hostname, (bool *)&hostname_set, "host name (IP address)");
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290 num_options = 5;
115
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291 #endif
117
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292 if (!scan_opts(argc, argv, 1, opts, num_options, (void *)&filename, OPTION_ARG_TYPE_STR, "file name"))
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293 {
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294 return;
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295 }
115
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296 #ifdef CYGPKG_REDBOOT_NETWORKING
117
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297 if (hostname_set) {
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298 if (!inet_aton(hostname, (in_addr_t *)&host)) {
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299 printf("Invalid IP address: %s\n", hostname);
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300 return;
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301 }
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302 }
115
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303 #endif
117
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304 if (mode_str_set) {
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305 if (strcmpci(mode_str, "zmodem") == 0) {
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306 mode = MODE_ZMODEM;
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307 #ifdef CYGPKG_REDBOOT_NETWORKING
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308 } else if (strcmpci(mode_str, "tftp") == 0) {
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309 mode = MODE_TFTP;
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310 if (!have_net) {
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311 printf("TFTP mode requires a working network\n");
115
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312 return;
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313 }
117
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314 #endif
115
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315 } else {
117
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316 printf("Invalid 'mode': %s\n", mode_str);
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317 return;
115
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318 }
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319 }
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320 if ((mode == MODE_TFTP) && !filename) {
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321 printf("File name missing\n");
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322 printf(usage);
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323 return;
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324 }
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325 #ifdef CYGPKG_REDBOOT_NETWORKING
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326 if (mode == MODE_TFTP) {
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327 res = tftp_stream_open(filename, &host, TFTP_OCTET, &err);
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328 if (res < 0) {
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329 printf("Can't load '%s': %s\n", filename, tftp_error(err));
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330 return;
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331 }
124
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332 redboot_getc_init(tftp_stream_read, verbose);
115
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333 for (i = 0; i < sizeof(type); i++) {
124
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334 if ((res = redboot_getc()) < 0) {
115
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335 err = getc_info.err;
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336 break;
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337 }
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338 type[i] = res;
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339 }
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340 if (res < 0) {
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341 printf("Error reading header via TFTP: %s\n", tftp_error(err));
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342 tftp_stream_close(&err);
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343 return;
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344 }
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345 }
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346 #endif
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347 if (mode == MODE_ZMODEM) {
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348 printf("Sorry, zmodem download not yet available\n");
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349 return;
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350 }
124
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351 redboot_getc_rewind(); // Restore header to stream
115
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352 if (raw) {
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353 if (!base_addr_set) {
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354 printf("Raw load requires a memory address\n");
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355 } else {
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356 unsigned char *mp = (unsigned char *)base;
124
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357 while ((res = redboot_getc()) >= 0) {
115
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358 *mp++ = res;
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359 }
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360 printf("Raw file loaded %p-%p\n", (void *)base, (void *)mp);
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361 }
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362 } else {
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363 // Treat data as some sort of executable image
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364 if (strncmp(&type[1], "ELF", 3) == 0) {
124
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365 load_elf_image(redboot_getc);
115
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366 } else if ((type[0] == 'S') &&
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367 ((type[1] >= '0') && (type[1] <= '9'))) {
124
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368 load_srec_image(redboot_getc, base);
115
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369 } else {
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370 printf("Unrecognized image type: %lx\n", *(unsigned long *)type);
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371 }
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372 }
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373 #ifdef CYGPKG_REDBOOT_NETWORKING
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374 if (mode == MODE_TFTP) {
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375 tftp_stream_close(&err);
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376 }
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377 #endif
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378 return;
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379 }