| 1 | # |
| 2 | # Unusual variables checked by this code: |
| 3 | # NOP - four byte opcode for no-op (defaults to 0) |
| 4 | # NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not |
| 5 | # empty. |
| 6 | # OTHER_READONLY_SECTIONS - other than .text .init .rodata ... |
| 7 | # (e.g., .PARISC.milli) |
| 8 | # When adding sections, do note that the names of some sections are used |
| 9 | # when specifying the start address of the next. |
| 10 | # |
| 11 | test -z "$ENTRY" && ENTRY=start |
| 12 | test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT} |
| 13 | test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT} |
| 14 | # If we request a big endian toolchain, give a big endian linker |
| 15 | test -z "$GOT" && GOT=".got ${RELOCATING-0} : { *(.got.plt) *(.got) } ${RELOCATING+ > ${DATA_MEMORY}}" |
| 16 | test "${ARC_ENDIAN}" == "big" && OUTPUT_FORMAT=${BIG_OUTPUT_FORMAT} |
| 17 | if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi |
| 18 | test -z "${ELFSIZE}" && ELFSIZE=32 |
| 19 | test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8" |
| 20 | test "$LD_FLAG" = "N" && DATA_ADDR=. |
| 21 | |
| 22 | CTOR=".ctors ${CONSTRUCTING-0} : |
| 23 | { |
| 24 | ${CONSTRUCTING+${CTOR_START}} |
| 25 | /* gcc uses crtbegin.o to find the start of |
| 26 | the constructors, so we make sure it is |
| 27 | first. Because this is a wildcard, it |
| 28 | doesn't matter if the user does not |
| 29 | actually link against crtbegin.o; the |
| 30 | linker won't look for a file to match a |
| 31 | wildcard. The wildcard also means that it |
| 32 | doesn't matter which directory crtbegin.o |
| 33 | is in. */ |
| 34 | |
| 35 | KEEP (*crtbegin*.o(.ctors)) |
| 36 | |
| 37 | /* We don't want to include the .ctor section from |
| 38 | from the crtend.o file until after the sorted ctors. |
| 39 | The .ctor section from the crtend file contains the |
| 40 | end of ctors marker and it must be last */ |
| 41 | |
| 42 | KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .ctors)) |
| 43 | KEEP (*(SORT(.ctors.*))) |
| 44 | KEEP (*(.ctors)) |
| 45 | ${CONSTRUCTING+${CTOR_END}} |
| 46 | } ${RELOCATING+ > ${DATA_MEMORY}}" |
| 47 | DTOR=".dtors ${CONSTRUCTING-0} : |
| 48 | { |
| 49 | ${CONSTRUCTING+${DTOR_START}} |
| 50 | KEEP (*crtbegin*.o(.dtors)) |
| 51 | KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .dtors)) |
| 52 | KEEP (*(SORT(.dtors.*))) |
| 53 | KEEP (*(.dtors)) |
| 54 | ${CONSTRUCTING+${DTOR_END}} |
| 55 | } ${RELOCATING+ > ${DATA_MEMORY}}" |
| 56 | |
| 57 | if test -z "${NO_SMALL_DATA}"; then |
| 58 | SBSS=".sbss ${RELOCATING-0} : |
| 59 | { |
| 60 | ${RELOCATING+PROVIDE (__sbss_start = .);} |
| 61 | ${RELOCATING+PROVIDE (___sbss_start = .);} |
| 62 | *(.dynsbss) |
| 63 | *(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*}) |
| 64 | *(.scommon) |
| 65 | ${RELOCATING+PROVIDE (__sbss_end = .);} |
| 66 | ${RELOCATING+PROVIDE (___sbss_end = .);} |
| 67 | } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| 68 | SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| 69 | SDATA="/* We want the small data sections together, so single-instruction offsets |
| 70 | can access them all, and initialized data all before uninitialized, so |
| 71 | we can shorten the on-disk segment size. */ |
| 72 | .sdata ${RELOCATING-0} : |
| 73 | { |
| 74 | ${RELOCATING+${SDATA_START_SYMBOLS}} |
| 75 | *(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*}) |
| 76 | |
| 77 | ${RELOCATING+_edata = .;} |
| 78 | ${RELOCATING+PROVIDE (edata = .);} |
| 79 | } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| 80 | SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}" |
| 81 | REL_SDATA=".rel.sdata ${RELOCATING-0} : { *(.rel.sdata${RELOCATING+ .rel.sdata.* .rel.gnu.linkonce.s.*}) } |
| 82 | .rela.sdata ${RELOCATING-0} : { *(.rela.sdata${RELOCATING+ .rela.sdata.* .rela.gnu.linkonce.s.*}) }" |
| 83 | REL_SBSS=".rel.sbss ${RELOCATING-0} : { *(.rel.sbss${RELOCATING+ .rel.sbss.* .rel.gnu.linkonce.sb.*}) } |
| 84 | .rela.sbss ${RELOCATING-0} : { *(.rela.sbss${RELOCATING+ .rela.sbss.* .rela.gnu.linkonce.sb.*}) }" |
| 85 | REL_SDATA2=".rel.sdata2 ${RELOCATING-0} : { *(.rel.sdata2${RELOCATING+ .rel.sdata2.* .rel.gnu.linkonce.s2.*}) } |
| 86 | .rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2${RELOCATING+ .rela.sdata2.* .rela.gnu.linkonce.s2.*}) }" |
| 87 | REL_SBSS2=".rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) } |
| 88 | .rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }" |
| 89 | fi |
| 90 | |
| 91 | # |
| 92 | # We provide two emulations: a fixed on that defines some memory banks |
| 93 | # and a configurable one that includes a user provided memory definition. |
| 94 | # |
| 95 | case $GENERIC_BOARD in |
| 96 | yes|1|YES) |
| 97 | MEMORY_DEF=" |
| 98 | /* Get memory banks definition from some user configuration file. |
| 99 | This file must be located in some linker directory (search path |
| 100 | with -L<dir>). See fixed memory banks emulation script. */ |
| 101 | INCLUDE memory.x; |
| 102 | " |
| 103 | ;; |
| 104 | *) |
| 105 | MEMORY_DEF=" |
| 106 | /* Fixed definition of the available memory banks. |
| 107 | See generic emulation script for a user defined configuration. */ |
| 108 | MEMORY |
| 109 | { |
| 110 | ICCM : ORIGIN = 0x00000000, LENGTH = ${ICCM_SIZE} |
| 111 | DCCM : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE} |
| 112 | } |
| 113 | |
| 114 | /* Setup the stack on the top of the data memory bank. */ |
| 115 | PROVIDE (__stack_top = (${RAM_START_ADDR} + ${RAM_SIZE} - 1) & -4); |
| 116 | PROVIDE (__end_heap = ${RAM_START_ADDR} + ${RAM_SIZE} - 1); |
| 117 | " |
| 118 | ;; |
| 119 | esac |
| 120 | |
| 121 | cat <<EOF |
| 122 | OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", "${LITTLE_OUTPUT_FORMAT}") |
| 123 | OUTPUT_ARCH(${OUTPUT_ARCH}) |
| 124 | ${RELOCATING+ENTRY(${ENTRY})} |
| 125 | |
| 126 | ${RELOCATING+${LIB_SEARCH_DIRS}} |
| 127 | ${RELOCATING+${EXECUTABLE_SYMBOLS}} |
| 128 | ${RELOCATING+${MEMORY_DEF}} |
| 129 | |
| 130 | SECTIONS |
| 131 | { |
| 132 | .ivt 0x00 : |
| 133 | { |
| 134 | KEEP (*(.ivt)); |
| 135 | } ${RELOCATING+ > ${STARTUP_MEMORY}} |
| 136 | |
| 137 | .startup 0x100: |
| 138 | { |
| 139 | KEEP (*crt0.o(.text.__startup)) |
| 140 | } ${RELOCATING+ > ${STARTUP_MEMORY}} |
| 141 | |
| 142 | /* Read-only sections, merged into text segment: */ |
| 143 | ${TEXT_DYNAMIC+${DYNAMIC}} |
| 144 | .hash ${RELOCATING-0} : { *(.hash) } |
| 145 | .dynsym ${RELOCATING-0} : { *(.dynsym) } |
| 146 | .dynstr ${RELOCATING-0} : { *(.dynstr) } |
| 147 | .gnu.version ${RELOCATING-0} : { *(.gnu.version) } |
| 148 | .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) } |
| 149 | .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) } |
| 150 | |
| 151 | .rel.init ${RELOCATING-0} : { *(.rel.init) } |
| 152 | .rela.init ${RELOCATING-0} : { *(.rela.init) } |
| 153 | .rel.text ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) } |
| 154 | .rela.text ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) } |
| 155 | .rel.fini ${RELOCATING-0} : { *(.rel.fini) } |
| 156 | .rela.fini ${RELOCATING-0} : { *(.rela.fini) } |
| 157 | .rel.rodata ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) } |
| 158 | .rela.rodata ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) } |
| 159 | .rel.data ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) } |
| 160 | .rela.data ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) } |
| 161 | .rel.tdata ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) } |
| 162 | .rela.tdata ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) } |
| 163 | .rel.tbss ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) } |
| 164 | .rela.tbss ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) } |
| 165 | .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } |
| 166 | .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } |
| 167 | .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } |
| 168 | .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } |
| 169 | .rel.got ${RELOCATING-0} : { *(.rel.got) } |
| 170 | .rela.got ${RELOCATING-0} : { *(.rela.got) } |
| 171 | ${REL_SDATA} |
| 172 | ${REL_SBSS} |
| 173 | ${REL_SDATA2} |
| 174 | ${REL_SBSS2} |
| 175 | .rel.bss ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) } |
| 176 | .rela.bss ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) } |
| 177 | |
| 178 | .jcr : { KEEP (*(.jcr)) } ${RELOCATING+> ${TEXT_MEMORY}} |
| 179 | .eh_frame : { KEEP (*(.eh_frame)) } ${RELOCATING+> ${TEXT_MEMORY}} |
| 180 | .gcc_except_table : { *(.gcc_except_table) *(.gcc_except_table.*) } ${RELOCATING+> ${TEXT_MEMORY}} |
| 181 | .plt : { *(.plt) } ${RELOCATING+> ${TEXT_MEMORY}} |
| 182 | .jlitab : |
| 183 | { |
| 184 | ${RELOCATING+${JLI_START_TABLE}} |
| 185 | jlitab*.o:(.jlitab*) *(.jlitab*) |
| 186 | } ${RELOCATING+> ${TEXT_MEMORY}} |
| 187 | |
| 188 | .rodata ${RELOCATING-0} : |
| 189 | { |
| 190 | *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)} |
| 191 | } ${RELOCATING+> ${TEXT_MEMORY}} |
| 192 | |
| 193 | .rodata1 ${RELOCATING-0} : { *(.rodata1) } ${RELOCATING+> ${TEXT_MEMORY}} |
| 194 | |
| 195 | .init ${RELOCATING-0} : |
| 196 | { |
| 197 | ${RELOCATING+${INIT_START}} |
| 198 | KEEP (*(.init)) |
| 199 | ${RELOCATING+${INIT_END}} |
| 200 | } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0} |
| 201 | |
| 202 | .text ${RELOCATING-0} : |
| 203 | { |
| 204 | ${RELOCATING+${TEXT_START_SYMBOLS}} |
| 205 | |
| 206 | *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*}) |
| 207 | /* .gnu.warning sections are handled specially by elf32.em. */ |
| 208 | *(.gnu.warning) |
| 209 | |
| 210 | ${RELOCATING+${OTHER_TEXT_SECTIONS}} |
| 211 | |
| 212 | } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0} |
| 213 | |
| 214 | .fini ${RELOCATING-0} : |
| 215 | { |
| 216 | ${RELOCATING+${FINI_START}} |
| 217 | KEEP (*(.fini)) |
| 218 | ${RELOCATING+${FINI_END}} |
| 219 | |
| 220 | ${RELOCATING+PROVIDE (__etext = .);} |
| 221 | ${RELOCATING+PROVIDE (_etext = .);} |
| 222 | ${RELOCATING+PROVIDE (etext = .);} |
| 223 | } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0} |
| 224 | |
| 225 | ${RELOCATING+${OTHER_READONLY_SECTIONS}} |
| 226 | |
| 227 | /* Start of the data section image in ROM. */ |
| 228 | ${RELOCATING+__data_image = .;} |
| 229 | ${RELOCATING+PROVIDE (__data_image = .);} |
| 230 | |
| 231 | .data ${RELOCATING-0} : |
| 232 | { |
| 233 | ${RELOCATING+ PROVIDE (__data_start = .) ; } |
| 234 | /* --gc-sections will delete empty .data. This leads to wrong start |
| 235 | addresses for subsequent sections because -Tdata= from the command |
| 236 | line will have no effect, see PR13697. Thus, keep .data */ |
| 237 | KEEP (*(.data)) |
| 238 | ${RELOCATING+${DATA_START_SYMBOLS}} |
| 239 | *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*}) |
| 240 | ${CONSTRUCTING+SORT(CONSTRUCTORS)} |
| 241 | |
| 242 | } ${RELOCATING+ > ${DATA_MEMORY}} |
| 243 | |
| 244 | ${GOT} |
| 245 | ${RELOCATING+${CTOR}} |
| 246 | ${RELOCATING+${DTOR}} |
| 247 | |
| 248 | ${RELOCATING+${SDATA}} |
| 249 | ${RELOCATING+${SDATA2}} |
| 250 | ${RELOCATING+${SBSS}} |
| 251 | ${RELOCATING+${SBSS2}} |
| 252 | .bss ${RELOCATING-0} : |
| 253 | { |
| 254 | *(.dynbss) |
| 255 | *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*}) |
| 256 | *(COMMON) |
| 257 | /* Align here to ensure that the .bss section occupies space up to |
| 258 | _end. Align after .bss to ensure correct alignment even if the |
| 259 | .bss section disappears because there are no input sections. */ |
| 260 | ${RELOCATING+. = ALIGN(${ALIGNMENT});} |
| 261 | ${RELOCATING+_end = .;} |
| 262 | ${RELOCATING+PROVIDE (end = .);} |
| 263 | } ${RELOCATING+ > ${DATA_MEMORY}} |
| 264 | |
| 265 | /* Global data not cleared after reset. */ |
| 266 | .noinit ${RELOCATING-0}: |
| 267 | { |
| 268 | *(.noinit*) |
| 269 | ${RELOCATING+. = ALIGN(${ALIGNMENT});} |
| 270 | ${RELOCATING+ PROVIDE (__start_heap = .) ; } |
| 271 | } ${RELOCATING+ > ${DATA_MEMORY}} |
| 272 | |
| 273 | |
| 274 | /* Stabs debugging sections. */ |
| 275 | .stab 0 : { *(.stab) } |
| 276 | .stabstr 0 : { *(.stabstr) } |
| 277 | .stab.excl 0 : { *(.stab.excl) } |
| 278 | .stab.exclstr 0 : { *(.stab.exclstr) } |
| 279 | .stab.index 0 : { *(.stab.index) } |
| 280 | .stab.indexstr 0 : { *(.stab.indexstr) } |
| 281 | |
| 282 | .comment 0 : { *(.comment) } |
| 283 | |
| 284 | /* DWARF debug sections. |
| 285 | Symbols in the DWARF debugging sections are relative to the beginning |
| 286 | of the section so we begin them at 0. */ |
| 287 | |
| 288 | /* DWARF 1 */ |
| 289 | .debug 0 : { *(.debug) } |
| 290 | .line 0 : { *(.line) } |
| 291 | |
| 292 | /* GNU DWARF 1 extensions */ |
| 293 | .debug_srcinfo 0 : { *(.debug_srcinfo) } |
| 294 | .debug_sfnames 0 : { *(.debug_sfnames) } |
| 295 | |
| 296 | /* DWARF 1.1 and DWARF 2 */ |
| 297 | .debug_aranges 0 : { *(.debug_aranges) } |
| 298 | .debug_pubnames 0 : { *(.debug_pubnames) } |
| 299 | |
| 300 | /* DWARF 2 */ |
| 301 | .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) } |
| 302 | .debug_abbrev 0 : { *(.debug_abbrev) } |
| 303 | .debug_line 0 : { *(.debug_line) } |
| 304 | .debug_frame 0 : { *(.debug_frame) } |
| 305 | .debug_str 0 : { *(.debug_str) } |
| 306 | .debug_loc 0 : { *(.debug_loc) } |
| 307 | .debug_macinfo 0 : { *(.debug_macinfo) } |
| 308 | |
| 309 | /* DWARF 3 */ |
| 310 | .debug_pubtypes 0 : { *(.debug_pubtypes) } |
| 311 | .debug_ranges 0 : { *(.debug_ranges) } |
| 312 | |
| 313 | /* DWARF Extension. */ |
| 314 | .debug_macro 0 : { *(.debug_macro) } |
| 315 | |
| 316 | /* ARC Extension Sections */ |
| 317 | .arcextmap 0 : { *(.gnu.linkonce.arcextmap.*) } |
| 318 | } |
| 319 | EOF |