1 | /* |
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2 | * This file contains directives for the GNU linker which are specific |
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3 | * to the 405GP/EX |
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4 | * This file is intended to be used together with dlentry.s |
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5 | * it will generate downloadable code |
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6 | * |
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7 | * Modifications for gen405 by Dennis Ehlin |
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8 | * Modifications for virtex by Keith, Greg, and Bob |
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9 | * Modifications for 405GP/EX by Michael Hamel |
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10 | */ |
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11 | |
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12 | OUTPUT_FORMAT("elf32-powerpc", "elf32-powerpc", "elf32-powerpc") |
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13 | OUTPUT_ARCH(powerpc) |
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14 | ENTRY(download_entry) |
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15 | |
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16 | kIntrStackSize = 16K; |
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17 | kMainStackSize = 64K; |
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18 | |
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19 | RamBase = DEFINED(RamBase) ? RamBase : 0; |
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20 | RamSize = DEFINED(RamSize) ? RamSize : 256M; |
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21 | HeapSize = DEFINED(HeapSize) ? HeapSize : 0x0; |
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22 | |
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23 | MEMORY { |
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24 | RAM : ORIGIN = 0, LENGTH = 256M |
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25 | /*FLASH : ORIGIN = 0xFFE00000, LENGTH = 16M*/ |
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26 | } |
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27 | |
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28 | |
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29 | SECTIONS |
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30 | { |
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31 | /* First 16K is occupied by exception vectors and anything else we want to put there */ |
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32 | .text 0x4000: |
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33 | { |
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34 | text.start = . ; |
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35 | *(.entry) |
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36 | *(.entry2) |
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37 | *(.text*) |
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38 | *(.rodata*) |
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39 | *(.rodata1) |
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40 | KEEP (*(SORT(.rtemsroset.*))) |
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41 | |
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42 | /* |
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43 | * Special FreeBSD sysctl sections. |
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44 | */ |
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45 | . = ALIGN (16); |
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46 | __start_set_sysctl_set = .; |
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47 | *(set_sysctl_*); |
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48 | __stop_set_sysctl_set = ABSOLUTE(.); |
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49 | *(set_domain_*); |
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50 | *(set_pseudo_*); |
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51 | |
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52 | /* C++ constructors/destructors */ |
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53 | *(.gnu.linkonce.t*) |
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54 | |
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55 | /* Initialization and finalization code. |
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56 | * |
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57 | * Various files can provide initialization and finalization functions. |
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58 | * The bodies of these functions are in .init and .fini sections. We |
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59 | * accumulate the bodies here, and prepend function prologues from |
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60 | * ecrti.o and function epilogues from ecrtn.o. ecrti.o must be linked |
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61 | * first; ecrtn.o must be linked last. Because these are wildcards, it |
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62 | * doesn't matter if the user does not actually link against ecrti.o and |
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63 | * ecrtn.o; the linker won't look for a file to match a wildcard. The |
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64 | * wildcard also means that it doesn't matter which directory ecrti.o |
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65 | * and ecrtn.o are in. |
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66 | */ |
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67 | PROVIDE (_init = .); |
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68 | *ecrti.o(.init) |
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69 | *(.init) |
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70 | *ecrtn.o(.init) |
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71 | |
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72 | PROVIDE (_fini = .); |
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73 | *ecrti.o(.fini) |
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74 | *(.fini) |
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75 | *ecrtn.o(.init) |
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76 | |
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77 | /* |
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78 | * C++ constructors and destructors for static objects. |
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79 | * PowerPC EABI does not use crtstuff yet, so we build "old-style" |
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80 | * constructor and destructor lists that begin with the list length |
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81 | * end terminate with a NULL entry. |
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82 | */ |
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83 | |
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84 | PROVIDE (__CTOR_LIST__ = .); |
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85 | *crtbegin.o(.ctors) |
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86 | *(.ctors) |
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87 | *crtend.o(.ctors) |
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88 | LONG(0) |
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89 | PROVIDE (__CTOR_END__ = .); |
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90 | |
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91 | PROVIDE (__DTOR_LIST__ = .); |
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92 | *crtbegin.o(.dtors) |
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93 | *(.dtors) |
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94 | *crtend.o(.dtors) |
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95 | LONG(0) |
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96 | PROVIDE (__DTOR_END__ = .); |
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97 | |
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98 | /* Exception frame info */ |
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99 | *(.eh_frame) |
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100 | /* Miscellaneous read-only data */ |
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101 | _rodata_start = . ; |
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102 | *(.gnu.linkonce.r*) |
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103 | *(.lit) |
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104 | *(.shdata) |
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105 | *(.rodata) |
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106 | *(.rodata1) |
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107 | *(.descriptors) |
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108 | *(rom_ver) |
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109 | _erodata = .; |
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110 | |
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111 | PROVIDE (__EXCEPT_START__ = .); |
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112 | *(.gcc_except_table*) |
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113 | PROVIDE (__EXCEPT_END__ = .); |
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114 | __GOT_START__ = .; |
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115 | s.got = .; |
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116 | *(.got.plt) |
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117 | *(.got) |
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118 | *(.got1) |
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119 | PROVIDE (__GOT2_START__ = .); |
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120 | PROVIDE (_GOT2_START_ = .); |
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121 | *(.got2) |
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122 | PROVIDE (__GOT2_END__ = .); |
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123 | PROVIDE (_GOT2_END_ = .); |
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124 | |
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125 | PROVIDE (__FIXUP_START__ = .); |
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126 | PROVIDE (_FIXUP_START_ = .); |
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127 | *(.fixup) |
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128 | PROVIDE (_FIXUP_END_ = .); |
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129 | PROVIDE (__FIXUP_END__ = .); |
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130 | |
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131 | |
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132 | /* Various possible names for the end of the .text section */ |
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133 | etext = ALIGN(0x10); |
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134 | _etext = .; |
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135 | |
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136 | *(.lit) |
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137 | *(.shdata) |
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138 | _endtext = ALIGN(0x10); |
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139 | text.end = .; |
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140 | text.size = text.end - text.start; |
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141 | } >RAM |
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142 | |
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143 | text.size = text.end - text.start; |
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144 | |
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145 | .tdata : { |
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146 | _TLS_Data_begin = .; |
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147 | *(.tdata .tdata.* .gnu.linkonce.td.*) |
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148 | _TLS_Data_end = .; |
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149 | } >RAM |
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150 | |
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151 | .tbss : { |
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152 | _TLS_BSS_begin = .; |
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153 | *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) |
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154 | _TLS_BSS_end = .; |
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155 | } >RAM |
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156 | |
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157 | _TLS_Data_size = _TLS_Data_end - _TLS_Data_begin; |
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158 | _TLS_Data_begin = _TLS_Data_size != 0 ? _TLS_Data_begin : _TLS_BSS_begin; |
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159 | _TLS_Data_end = _TLS_Data_size != 0 ? _TLS_Data_end : _TLS_BSS_begin; |
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160 | _TLS_BSS_size = _TLS_BSS_end - _TLS_BSS_begin; |
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161 | _TLS_Size = _TLS_BSS_end - _TLS_Data_begin; |
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162 | _TLS_Alignment = MAX (ALIGNOF (.tdata), ALIGNOF (.tbss)); |
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163 | |
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164 | .jcr : { KEEP (*(.jcr)) } >RAM |
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165 | |
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166 | .rel.dyn : { |
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167 | *(.rel.init) |
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168 | *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) |
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169 | *(.rel.fini) |
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170 | *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) |
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171 | *(.rel.data.rel.ro* .rel.gnu.linkonce.d.rel.ro.*) |
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172 | *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) |
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173 | *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) |
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174 | *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) |
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175 | *(.rel.ctors) |
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176 | *(.rel.dtors) |
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177 | *(.rel.got) |
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178 | *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) |
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179 | *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) |
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180 | *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) |
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181 | *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) |
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182 | *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) |
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183 | } >RAM |
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184 | .rela.dyn : { |
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185 | *(.rela.init) |
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186 | *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) |
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187 | *(.rela.fini) |
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188 | *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) |
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189 | *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) |
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190 | *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) |
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191 | *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) |
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192 | *(.rela.ctors) |
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193 | *(.rela.dtors) |
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194 | *(.rela.got) |
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195 | *(.rela.got1) |
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196 | *(.rela.got2) |
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197 | *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) |
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198 | *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) |
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199 | *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) |
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200 | *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) |
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201 | *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) |
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202 | } >RAM |
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203 | |
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204 | |
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205 | /* Initialised large data */ |
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206 | .data ( . ) : |
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207 | { |
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208 | . = ALIGN (4); |
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209 | data.start = .; |
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210 | *(.data) |
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211 | *(.data1) |
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212 | KEEP (*(SORT(.rtemsrwset.*))) |
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213 | *(.data.* .gnu.linkonce.d.*) |
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214 | data.end = .; |
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215 | } > RAM |
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216 | |
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217 | /* Initialised small data addressed as offsets from r13 */ |
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218 | .sdata : { |
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219 | . = ALIGN (4); |
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220 | PROVIDE (__SDATA_START__ = .); |
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221 | sdata.start = .; |
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222 | *(.sdata*) |
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223 | *(.gnu.linkonce.s.*) |
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224 | sdata.end = .; |
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225 | } > RAM |
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226 | |
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227 | /* Zeroed small data addressed as offsets from r13 */ |
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228 | .sbss : { |
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229 | . = ALIGN (4); |
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230 | PROVIDE(__SBSS_START__ = .); |
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231 | sbss.start = .; |
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232 | *(.sbss .sbss.* *.gnu.linkonce.sb.*); |
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233 | sbss.end = .; |
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234 | } > RAM |
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235 | PROVIDE(__SBSS_END__ = .); |
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236 | |
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237 | /* Zeroed large data */ |
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238 | .bss : { |
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239 | . = ALIGN (4); |
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240 | bss.start = .; |
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241 | *(.bss .bss* .gnu.linkonce.b*) |
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242 | . = ALIGN(4); |
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243 | bss.end = .; |
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244 | } > RAM |
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245 | |
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246 | bss.size = bss.end - bss.start; |
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247 | sbss.size = sbss.end - sbss.start; |
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248 | |
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249 | /* Interrupt stack: align to a cache-line boundary */ |
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250 | IntrStack_start = ALIGN(0x20); |
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251 | . += kIntrStackSize; |
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252 | intrStack = .; |
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253 | PROVIDE(intrStackPtr = intrStack); |
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254 | PROVIDE(intrStack_start = IntrStack_start); |
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255 | PROVIDE(intrStack_size = kIntrStackSize); |
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256 | |
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257 | /* Main stack: align to a cache-line boundary */ |
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258 | stack.start = ALIGN(0x20); |
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259 | . += kMainStackSize; |
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260 | stack.end = .; |
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261 | |
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262 | /* RTEMS workspace: size specified by application */ |
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263 | WorkAreaBase = ALIGN(0x20); |
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264 | |
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265 | /* Debugging information */ |
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266 | .line 0 : { *(.line) } |
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267 | .debug 0 : { *(.debug) } |
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268 | .debug_sfnames 0 : { *(.debug_sfnames) } |
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269 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
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270 | .debug_pubnames 0 : { *(.debug_pubnames) } |
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271 | .debug_aranges 0 : { *(.debug_aranges) } |
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272 | .debug_aregion 0 : { *(.debug_aregion) } |
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273 | .debug_macinfo 0 : { *(.debug_macinfo) } |
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274 | .stab 0 : { *(.stab) } |
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275 | .stabstr 0 : { *(.stabstr) } |
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276 | } |
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