1 | /* |
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2 | * $Id$ |
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3 | * |
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4 | * MC68302 Linker command file |
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5 | * |
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6 | */ |
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7 | |
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8 | /* |
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9 | * Declare some sizes. |
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10 | */ |
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11 | _RamBase = DEFINED(_RamBase) ? _RamBase : 0x0; |
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12 | _RamSize = DEFINED(_RamSize) ? _RamSize : 1M; |
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13 | _HeapSize = DEFINED(_HeapSize) ? _HeapSize : 0x10000; |
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14 | _StackSize = DEFINED(_StackSize) ? _StackSize : 0x1000; |
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15 | |
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16 | /* |
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17 | * Declare on-board memory. |
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18 | */ |
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19 | MEMORY { |
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20 | ram : ORIGIN = 0x00000000, LENGTH = 1M |
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21 | } |
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22 | SECTIONS |
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23 | { |
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24 | ram : { |
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25 | . = .; |
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26 | } >ram |
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27 | |
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28 | .vtable : |
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29 | { |
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30 | vtable_start = .; |
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31 | *(.vtable) |
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32 | evtable = .; |
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33 | } >ram |
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34 | |
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35 | |
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36 | /* |
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37 | * Text, data and bss segments |
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38 | */ |
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39 | .text : { |
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40 | *(.text) |
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41 | |
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42 | /* |
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43 | * C++ constructors/destructors |
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44 | */ |
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45 | *(.gnu.linkonce.t.*) |
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46 | |
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47 | /* |
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48 | * Initialization and finalization code. |
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49 | * |
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50 | * Various files can provide initialization and finalization |
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51 | * functions. crtbegin.o and crtend.o are two instances. The |
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52 | * body of these functions are in .init and .fini sections. We |
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53 | * accumulate the bodies here, and prepend function prologues |
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54 | * from crti.o and function epilogues from crtn.o. crti.o must |
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55 | * be linked first; crtn.o must be linked last. Because these |
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56 | * are wildcards, it doesn't matter if the user does not |
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57 | * actually link against crti.o and crtn.o; the linker won't |
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58 | * look for a file to match a wildcard. The wildcard also |
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59 | * means that it doesn't matter which directory crti.o and |
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60 | * crtn.o are in. |
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61 | */ |
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62 | PROVIDE (_init = .); |
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63 | *crti.o(.init) |
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64 | *(.init) |
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65 | *crtn.o(.init) |
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66 | PROVIDE (_fini = .); |
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67 | *crti.o(.fini) |
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68 | *(.fini) |
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69 | *crtn.o(.fini) |
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70 | |
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71 | /* |
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72 | * C++ constructors/destructors |
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73 | * |
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74 | * gcc uses crtbegin.o to find the start of the constructors |
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75 | * and destructors so we make sure it is first. Because this |
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76 | * is a wildcard, it doesn't matter if the user does not |
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77 | * actually link against crtbegin.o; the linker won't look for |
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78 | * a file to match a wildcard. The wildcard also means that |
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79 | * it doesn't matter which directory crtbegin.o is in. The |
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80 | * constructor and destructor list are terminated in |
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81 | * crtend.o. The same comments apply to it. |
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82 | */ |
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83 | . = ALIGN (16); |
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84 | *crtbegin.o(.ctors) |
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85 | *(.ctors) |
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86 | *crtend.o(.ctors) |
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87 | *crtbegin.o(.dtors) |
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88 | *(.dtors) |
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89 | *crtend.o(.dtors) |
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90 | |
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91 | /* |
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92 | * Exception frame info |
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93 | */ |
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94 | . = ALIGN (16); |
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95 | *(.eh_frame) |
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96 | |
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97 | /* |
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98 | * Read-only data |
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99 | */ |
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100 | . = ALIGN (16); |
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101 | _rodata_start = .; |
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102 | *(.rodata*) |
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103 | *(.gnu.linkonce.r*) |
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104 | |
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105 | . = ALIGN (16); |
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106 | PROVIDE (_etext = .); |
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107 | } >ram |
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108 | .data : { |
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109 | PROVIDE (_copy_start = .); |
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110 | *(.data) |
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111 | *(.gnu.linkonce.d*) |
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112 | *(.gcc_except_table) |
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113 | *(.jcr) |
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114 | . = ALIGN (16); |
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115 | PROVIDE (_edata = .); |
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116 | PROVIDE (_copy_end = .); |
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117 | } >ram |
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118 | .bss : { |
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119 | _clear_start = .; |
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120 | *(.bss) |
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121 | *(COMMON) |
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122 | . = ALIGN (16); |
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123 | PROVIDE (end = .); |
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124 | |
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125 | . += _StackSize; |
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126 | . = ALIGN (16); |
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127 | _stack_init = .; |
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128 | _clear_end = .; |
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129 | |
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130 | _WorkspaceBase = .; |
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131 | } >ram |
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132 | |
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133 | /* Stabs debugging sections. */ |
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134 | .stab 0 : { *(.stab) } |
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135 | .stabstr 0 : { *(.stabstr) } |
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136 | .stab.excl 0 : { *(.stab.excl) } |
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137 | .stab.exclstr 0 : { *(.stab.exclstr) } |
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138 | .stab.index 0 : { *(.stab.index) } |
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139 | .stab.indexstr 0 : { *(.stab.indexstr) } |
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140 | .comment 0 : { *(.comment) } |
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141 | |
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142 | /* DWARF debug sections. |
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143 | Symbols in the DWARF debugging sections are relative to the beginning |
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144 | of the section so we begin them at 0. */ |
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145 | /* DWARF 1 */ |
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146 | .debug 0 : { *(.debug) } |
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147 | .line 0 : { *(.line) } |
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148 | |
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149 | /* GNU DWARF 1 extensions */ |
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150 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
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151 | .debug_sfnames 0 : { *(.debug_sfnames) } |
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152 | |
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153 | /* DWARF 1.1 and DWARF 2 */ |
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154 | .debug_aranges 0 : { *(.debug_aranges) } |
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155 | .debug_pubnames 0 : { *(.debug_pubnames) } |
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156 | |
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157 | /* DWARF 2 */ |
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158 | .debug_info 0 : { *(.debug_info) } |
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159 | .debug_abbrev 0 : { *(.debug_abbrev) } |
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160 | .debug_line 0 : { *(.debug_line) } |
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161 | .debug_frame 0 : { *(.debug_frame) } |
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162 | .debug_str 0 : { *(.debug_str) } |
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163 | .debug_loc 0 : { *(.debug_loc) } |
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164 | .debug_macinfo 0 : { *(.debug_macinfo) } |
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165 | |
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166 | /* SGI/MIPS DWARF 2 extensions */ |
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167 | .debug_weaknames 0 : { *(.debug_weaknames) } |
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168 | .debug_funcnames 0 : { *(.debug_funcnames) } |
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169 | .debug_typenames 0 : { *(.debug_typenames) } |
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170 | .debug_varnames 0 : { *(.debug_varnames) } |
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171 | /* These must appear regardless of . */ |
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172 | } |
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173 | |
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174 | RAM_BASE = DEFINED(RAM_BASE) ? RAM_BASE : 0x00000000; |
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175 | RAM_SIZE = DEFINED(RAM_SIZE) ? RAM_SIZE : 0x00100000; |
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176 | ROM_BASE = DEFINED(ROM_BASE) ? ROM_BASE : 0x00C00000; |
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177 | ROM_SIZE = DEFINED(ROM_SIZE) ? ROM_SIZE : 0x00100000; |
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178 | MC68302_BASE = DEFINED(MC68302_BASE) ? MC68302_BASE : 0x00700000; |
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179 | m302 = MC68302_BASE; |
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180 | _VBR = ADDR(.vtable); /* location of the VBR table (in RAM) */ |
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181 | |
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