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annotate src/cs/system/template/gsm_ds_motc139.template @ 625:916b27af1c6c

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Leonardo target: compacted linker script template
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Dec 2019 23:24:44 +0000
parents b54879bebfd3
children
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86
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1 /*
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2 * Integrated Protocol Stack Linker command file (all components)
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3 *
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4 * Target : ARM
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5 *
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6 * Copyright (c) Texas Instruments 2002, Condat 2002
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7 *
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8 * This version of the linker script template has been concocted
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9 * by Spacefalcon the Outlaw, based on gsm_ds_amd8_lj3.template,
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10 * in order to build the GSM firmware for the memory configuration
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11 * found in the Motorola C139.
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12 */
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13
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14 -c /* Autoinitialize variables at runtime */
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15
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16 /*********************************/
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17 /* SPECIFY THE SYSTEM MEMORY MAP */
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18 /*********************************/
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19
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20 MEMORY
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21 {
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22 /* CS0: Flash 4 Mbytes ****************************************************/
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23 /* Interrupt Vectors Table */
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24 I_MEM (RXI) : org = 0x00000000 len = 0x00000100
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25
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26 /* Boot Sector */
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27 B_MEM (RXI) : org = 0x00000100 len = 0x00001f00
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28
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29 /* Magic Word for Calypso Boot ROM */
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30 MWC_MEM (RXI) : org = 0x00002000 len = 0x00000004 fill = 0x0000001
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31
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32 /* Program Memory */
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33 P_MEM1 (RXI) : org = 0x00010000 len = 0x00000700
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34 P_MEM2 (RXI) : org = 0x00010700 len = 0x00000004
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35 P_MEM3 (RXI) : org = 0x00010704 len = 0x003af8fc
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36
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37 /* FFS Area */
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38 FFS_MEM (RX) : org = 0x003C0000 len = 0x00030000
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39 /**************************************************************************/
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40
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41 /* CS1: External SRAM 1 Mbytes ********************************************/
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42 /* Data Memory */
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43
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44 /*
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45 *** HACK by Spacefalcon the Outlaw ***
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46 *
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47 * The starting Leonardo version (gsm_ds_amd8_lj3.template) had two
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48 * external SRAM regions: D_MEM1 and D_MEM2. When I tried removing
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49 * D_MEM2 and keeping only D_MEM1, the linker started behaving oddly
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50 * in that the sections were emitted in the wrong order, and the
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51 * addresses printed in the map file were bogus. The resulting m0
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52 * images seemed to still work correctly, but I feel that having the
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53 * linker act "correctly" is better.
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54 *
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55 * My current hack-solution is to split the 1 MiB physical XRAM
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56 * into D_MEM1 and D_MEM2 of 512 KiB each. As it happens, the total
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57 * XRAM usage of the current firmware is a little below 512 KiB anyway.
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58 *
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59 * Update for C139: we only have 512 KiB in total now, but we can still
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60 * split the last 4 KiB off into D_MEM2.
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61 */
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62
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63 D_MEM1 (RW) : org = 0x01000000 len = 0x0007F000
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64 D_MEM2 (RW) : org = 0x0107F000 len = 0x00001000
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65 /**************************************************************************/
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66
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67 /* CS6: Calypso Internal SRAM 256 kbytes **********************************/
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68 /* Code & Variables Memory */
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69 S_MEM (RXW) : org = 0x00800000 len = 0x00040000
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70 /**************************************************************************/
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71 }
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72
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73 /***********************************************/
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74 /* SPECIFY THE SECTIONS ALLOCATION INTO MEMORY */
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75 /***********************************************/
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76
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77 /*
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78 * Since the bootloader directly calls the INT_Initialize() routine located
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79 * in int.s, this int.s code must always be mapped at the same address
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80 * (usually in the second flash sector). Its length is about 0x500 bytes.
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81 * Then comes the code that need to be loaded into the internal RAM.
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82 */
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83
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84 SECTIONS
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85 {
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86 .intvecs : {} > I_MEM /* Interrupt Vectors Table */
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87 .monitor : > B_MEM /* Monitor Constants & Code */
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88 {
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89 $(CONST_BOOT_LIB)
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90 }
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91
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92 .inttext : {} > P_MEM1 /* int.s Code */
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93
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94 .bss_dar : > D_MEM1 /* DAR SWE Variables */
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95 {
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96 $(BSS_DAR_LIB)
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97 }
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98
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99 /*
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100 * The .bss section should not be split to ensure it is initialized to 0
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101 * each time the SW is reset. So the whole .bss is mapped either in D_MEM1
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102 * or in D_MEM2.
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103 *
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104 * Falcon's note for K5A3281: see the comments above where the memory
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105 * regions are defined.
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106 */
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107
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108 .bss : > D_MEM1 | D_MEM2 /* Global & Static Variables */
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109 {
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110 $(BSS_BOOT_LIB)
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111 }
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112
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113 /*
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114 * All .bss sections, which must be mapped in internal RAM must be
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115 * grouped in order to initialized the corresponding memory to 0.
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116 * This initialization is done in int.s file before calling the Nucleus
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117 * routine.
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118 */
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119
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120 GROUP
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121 {
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122 S_D_Mem /* Label of start address of .bss section in Int. RAM */
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123 .DintMem
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124 {
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125
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126 /*
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127 * .bss sections of the application
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128 */
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129
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130 $(BSS_LIBS)
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131
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132 }
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133
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134 API_HISR_stack : {}
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135
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136 E_D_Mem /* Label of end address of .bss section in Int. RAM */
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137 } > S_MEM
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138
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139 /*
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140 * .text and .const sections which must be mapped in internal RAM.
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141 */
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142
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143 .ldfl : {} > P_MEM2 /* Used to know the start load address */
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144 GROUP load = P_MEM3, run = S_MEM
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145 {
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146 S_P_Mem /* Label of start address of .text & .const sections in Int. RAM */
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147 .PIntMem
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148 {
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149 /*
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150 * .text and .const sections of the application.
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151 *
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152 * The .veneer sections correspond exactly to .text:v&n sections
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153 * implementing the veneer functions. The .text:v$n -> .veneer
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154 * translation is performed by PTOOL software when PTOOL_OPTIONS
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155 * environement variable is set to veneer_section.
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156 */
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157
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158 $(CONST_LIBS)
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159
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160 }
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161 E_P_Mem /* Label of end address of .text and .const sections in Int. RAM */
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162 }
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163
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164 /*
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165 * The rest of the code is mapped in flash, however the trampolines
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166 * load address should be consistent with .text.
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167 */
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168 COMMENT2START
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169 `trampolines load = P_MEM3, run = S_MEM
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170 COMMENT2END
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171
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172 .text : {} > P_MEM3 /* Code */
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173
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174 /*
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175 * The rest of the constants is mapped in flash.
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176 * The .cinit section should not be split.
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177 */
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178
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179 .cinit : {} > P_MEM3 /* Initialization Tables */
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180 .const : {} > P_MEM3 /* Constant Data */
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181 KadaAPI : {} > P_MEM3 /* ROMized CLDC */
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182
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183 .javastack: {} >> D_MEM1 | D_MEM2 /* Java stack */
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184
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185 .stackandheap : > D_MEM1 /* System Stacks, etc... */
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186 {
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187 /* Leave 20 32bit words for register pushes. */
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188 . = align(8);
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189 . += 20 * 4;
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190
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191 /* Stack for abort and/or undefined modes. */
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192 exception_stack = .;
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193
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194 /* Leave 38 32bit words for state saving on exceptions. */
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195 _xdump_buffer = .;
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196 . += 38 * 4;
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197 . = align(8);
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198
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199 /* Beginning of stacks and heap area - 2.75 kbytes (int.s) */
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200 stack_segment = .;
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201 . += 0xB00;
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202 }
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203
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204 .data : {} > D_MEM1 /* Initialized Data */
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205 .sysmem : {} > D_MEM1 /* Dynamic Memory Allocation Area */
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206
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207 }