2 # Unusual variables checked by this code:
3 # NOP - four byte opcode for no-op (defaults to 0)
4 # DATA_ADDR - if end-of-text-plus-one-page isn't right for data start
5 # OTHER_READWRITE_SECTIONS - other than .data .bss .ctors .sdata ...
6 # (e.g., .PARISC.global)
7 # OTHER_SECTIONS - at the end
8 # EXECUTABLE_SYMBOLS - symbols that must be defined for an
9 # executable (e.g., _DYNAMIC_LINK)
10 # TEXT_START_SYMBOLS - symbols that appear at the start of the
12 # DATA_START_SYMBOLS - symbols that appear at the start of the
14 # OTHER_BSS_SYMBOLS - symbols that appear at the start of the
15 # .bss section besides __bss_start.
16 # EMBEDDED - whether this is for an embedded system.
18 # When adding sections, do note that the names of some sections are used
19 # when specifying the start address of the next.
21 test -z "$ENTRY" && ENTRY=_start
22 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
23 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
24 if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
25 test "$LD_FLAG" = "N" && DATA_ADDR=.
27 CTOR=".ctors ${CONSTRUCTING-0} :
29 ${CONSTRUCTING+ PROVIDE (__CTOR_LIST__ = .); }
30 ${CONSTRUCTING+${CTOR_START}}
33 ${CONSTRUCTING+${CTOR_END}}
34 ${CONSTRUCTING+ PROVIDE(__CTOR_END__ = .); }
35 } ${RELOCATING+ > ${TEXT_MEMORY}}"
37 DTOR=" .dtors ${CONSTRUCTING-0} :
39 ${CONSTRUCTING+ PROVIDE(__DTOR_LIST__ = .); }
41 ${CONSTRUCTING+ PROVIDE(__DTOR_END__ = .); }
42 } ${RELOCATING+ > ${TEXT_MEMORY}}"
46 /* If the 'vectors_addr' symbol is defined, it indicates the start address
47 of interrupt vectors. This depends on the 68HC11 operating mode:
55 In general, the vectors address is 0xffc0. This can be overriden
56 with the '-defsym vectors_addr=0xbfc0' ld option.
58 Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but
59 they are redirected to 0x00c0 by the internal PROM. Application's vectors
60 must also consist of jump instructions (see Motorola's manual). */
62 PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0);
63 .vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 :
69 # We provide two emulations: a fixed on that defines some memory banks
70 # and a configurable one that includes a user provided memory definition.
72 case $GENERIC_BOARD in
75 /* Get memory banks definition from some user configuration file.
76 This file must be located in some linker directory (search path
77 with -L<dir>). See fixed memory banks emulation script. */
83 /* Fixed definition of the available memory banks.
84 See generic emulation script for a user defined configuration. */
87 page0 (rwx) : ORIGIN = 0x0, LENGTH = 256
88 text (rx) : ORIGIN = ${ROM_START_ADDR}, LENGTH = ${ROM_SIZE}
89 data : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE}
90 eeprom : ORIGIN = ${EEPROM_START_ADDR}, LENGTH = ${EEPROM_SIZE}
93 /* Setup the stack on the top of the data memory bank. */
94 PROVIDE (_stack = ${RAM_START_ADDR} + ${RAM_SIZE} - 1);
101 KEEP (*(.install0)) /* Section should setup the stack pointer. */
102 KEEP (*(.install1)) /* Place holder for applications. */
103 KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
104 KEEP (*(.install3)) /* Place holder for applications. */
105 KEEP (*(.install4)) /* Section that calls the main. */
110 KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
111 KEEP (*(.fini1)) /* Place holder for applications. */
112 KEEP (*(.fini2)) /* C++ destructors. */
113 KEEP (*(.fini3)) /* Place holder for applications. */
114 KEEP (*(.fini4)) /* Runtime exit. */
117 PRE_COMPUTE_DATA_SIZE="
118 /* SCz: this does not work yet... This is supposed to force the loading
119 of _map_data.o (from libgcc.a) when the .data section is not empty.
120 By doing so, this should bring the code that copies the .data section
121 from ROM to RAM at init time.
123 ___pre_comp_data_size = SIZEOF(.data);
124 __install_data_sections = ___pre_comp_data_size > 0 ?
125 __map_data_sections : 0;
130 .install0 0 : { *(.install0) }
131 .install1 0 : { *(.install1) }
132 .install2 0 : { *(.install2) }
133 .install3 0 : { *(.install3) }
134 .install4 0 : { *(.install4) }
138 .fini0 0 : { *(.fini0) }
139 .fini1 0 : { *(.fini1) }
140 .fini2 0 : { *(.fini2) }
141 .fini3 0 : { *(.fini3) }
142 .fini4 0 : { *(.fini4) }
146 .data1 0 : { *(.data1) }
148 /* We want the small data sections together, so single-instruction offsets
149 can access them all, and initialized data all before uninitialized, so
150 we can shorten the on-disk segment size. */
151 .sdata 0 : { *(.sdata) }
152 .sbss 0 : { *(.sbss) }
153 .scommon 0 : { *(.scommon) }
157 .softregs 0 : { *(.softregs) }
161 ${RELOCATING+/* Linker script for 68HC12 executable (PROM). */}
162 ${RELOCATING-/* Linker script for 68HC12 object file (ld -r). */}
164 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
165 "${LITTLE_OUTPUT_FORMAT}")
166 OUTPUT_ARCH(${OUTPUT_ARCH})
169 ${RELOCATING+${LIB_SEARCH_DIRS}}
170 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
171 ${RELOCATING+${MEMORY_DEF}}
175 .hash ${RELOCATING-0} : { *(.hash) }
176 .dynsym ${RELOCATING-0} : { *(.dynsym) }
177 .dynstr ${RELOCATING-0} : { *(.dynstr) }
178 .gnu.version ${RELOCATING-0} : { *(.gnu.version) }
179 .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
180 .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
182 .rel.text ${RELOCATING-0} :
185 ${RELOCATING+*(.rel.text.*)}
186 ${RELOCATING+*(.rel.gnu.linkonce.t.*)}
188 .rela.text ${RELOCATING-0} :
191 ${RELOCATING+*(.rela.text.*)}
192 ${RELOCATING+*(.rela.gnu.linkonce.t.*)}
194 .rel.data ${RELOCATING-0} :
197 ${RELOCATING+*(.rel.data.*)}
198 ${RELOCATING+*(.rel.gnu.linkonce.d.*)}
200 .rela.data ${RELOCATING-0} :
203 ${RELOCATING+*(.rela.data.*)}
204 ${RELOCATING+*(.rela.gnu.linkonce.d.*)}
206 .rel.rodata ${RELOCATING-0} :
209 ${RELOCATING+*(.rel.rodata.*)}
210 ${RELOCATING+*(.rel.gnu.linkonce.r.*)}
212 .rela.rodata ${RELOCATING-0} :
215 ${RELOCATING+*(.rela.rodata.*)}
216 ${RELOCATING+*(.rela.gnu.linkonce.r.*)}
218 .rel.sdata ${RELOCATING-0} :
221 ${RELOCATING+*(.rel.sdata.*)}
222 ${RELOCATING+*(.rel.gnu.linkonce.s.*)}
224 .rela.sdata ${RELOCATING-0} :
227 ${RELOCATING+*(.rela.sdata.*)}
228 ${RELOCATING+*(.rela.gnu.linkonce.s.*)}
230 .rel.sbss ${RELOCATING-0} :
233 ${RELOCATING+*(.rel.sbss.*)}
234 ${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
236 .rela.sbss ${RELOCATING-0} :
239 ${RELOCATING+*(.rela.sbss.*)}
240 ${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
242 .rel.bss ${RELOCATING-0} :
245 ${RELOCATING+*(.rel.bss.*)}
246 ${RELOCATING+*(.rel.gnu.linkonce.b.*)}
248 .rela.bss ${RELOCATING-0} :
251 ${RELOCATING+*(.rela.bss.*)}
252 ${RELOCATING+*(.rela.gnu.linkonce.b.*)}
254 .rel.stext ${RELOCATING-0} : { *(.rel.stest) }
255 .rela.stext ${RELOCATING-0} : { *(.rela.stest) }
256 .rel.etext ${RELOCATING-0} : { *(.rel.etest) }
257 .rela.etext ${RELOCATING-0} : { *(.rela.etest) }
258 .rel.sdata ${RELOCATING-0} : { *(.rel.sdata) }
259 .rela.sdata ${RELOCATING-0} : { *(.rela.sdata) }
260 .rel.edata ${RELOCATING-0} : { *(.rel.edata) }
261 .rela.edata ${RELOCATING-0} : { *(.rela.edata) }
262 .rel.eit_v ${RELOCATING-0} : { *(.rel.eit_v) }
263 .rela.eit_v ${RELOCATING-0} : { *(.rela.eit_v) }
264 .rel.ebss ${RELOCATING-0} : { *(.rel.ebss) }
265 .rela.ebss ${RELOCATING-0} : { *(.rela.ebss) }
266 .rel.srodata ${RELOCATING-0} : { *(.rel.srodata) }
267 .rela.srodata ${RELOCATING-0} : { *(.rela.srodata) }
268 .rel.erodata ${RELOCATING-0} : { *(.rel.erodata) }
269 .rela.erodata ${RELOCATING-0} : { *(.rela.erodata) }
270 .rel.got ${RELOCATING-0} : { *(.rel.got) }
271 .rela.got ${RELOCATING-0} : { *(.rela.got) }
272 .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
273 .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
274 .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
275 .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
276 .rel.init ${RELOCATING-0} : { *(.rel.init) }
277 .rela.init ${RELOCATING-0} : { *(.rela.init) }
278 .rel.fini ${RELOCATING-0} : { *(.rel.fini) }
279 .rela.fini ${RELOCATING-0} : { *(.rela.fini) }
280 .rel.plt ${RELOCATING-0} : { *(.rel.plt) }
281 .rela.plt ${RELOCATING-0} : { *(.rela.plt) }
283 /* Concatenate .page0 sections. Put them in the page0 memory bank
284 unless we are creating a relocatable file. */
288 } ${RELOCATING+ > page0}
290 /* Start of text section. */
291 .stext ${RELOCATING-0} :
294 } ${RELOCATING+ > ${TEXT_MEMORY}}
296 .init ${RELOCATING-0} :
299 } ${RELOCATING+=${NOP-0}}
301 ${RELOCATING-${INSTALL_RELOC}}
302 ${RELOCATING-${FINISH_RELOC}}
304 .text ${RELOCATING-0}:
306 /* Put startup code at beginning so that _start keeps same address. */
307 ${RELOCATING+${STARTUP_CODE}}
309 ${RELOCATING+*(.init)}
311 ${RELOCATING+*(.text.*)}
312 /* .gnu.warning sections are handled specially by elf32.em. */
314 ${RELOCATING+*(.gnu.linkonce.t.*)}
315 ${RELOCATING+*(.tramp)}
316 ${RELOCATING+*(.tramp.*)}
318 ${RELOCATING+${FINISH_CODE}}
320 ${RELOCATING+_etext = .;}
321 ${RELOCATING+PROVIDE (etext = .);}
323 } ${RELOCATING+ > ${TEXT_MEMORY}}
325 .eh_frame ${RELOCATING-0} :
328 } ${RELOCATING+ > ${TEXT_MEMORY}}
330 .gcc_except_table ${RELOCATING-0} :
333 } ${RELOCATING+ > ${TEXT_MEMORY}}
335 .rodata ${RELOCATING-0} :
338 ${RELOCATING+*(.rodata.*)}
339 ${RELOCATING+*(.gnu.linkonce.r*)}
340 } ${RELOCATING+ > ${TEXT_MEMORY}}
342 .rodata1 ${RELOCATING-0} :
345 } ${RELOCATING+ > ${TEXT_MEMORY}}
347 /* Constructor and destructor tables are in ROM. */
348 ${RELOCATING+${CTOR}}
349 ${RELOCATING+${DTOR}}
351 .jcr ${RELOCATING-0} :
354 } ${RELOCATING+ > ${TEXT_MEMORY}}
356 /* Start of the data section image in ROM. */
357 ${RELOCATING+__data_image = .;}
358 ${RELOCATING+PROVIDE (__data_image = .);}
360 /* All read-only sections that normally go in PROM must be above.
361 We construct the DATA image section in PROM at end of all these
362 read-only sections. The data image must be copied at init time.
363 Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
364 .data ${RELOCATING-0} : ${RELOCATING+AT (__data_image)}
366 ${RELOCATING+__data_section_start = .;}
367 ${RELOCATING+PROVIDE (__data_section_start = .);}
369 ${RELOCATING+${DATA_START_SYMBOLS}}
370 ${RELOCATING+*(.sdata)}
372 ${RELOCATING+*(.data.*)}
373 ${RELOCATING+*(.data1)}
374 ${RELOCATING+*(.gnu.linkonce.d.*)}
375 ${CONSTRUCTING+CONSTRUCTORS}
377 ${RELOCATING+_edata = .;}
378 ${RELOCATING+PROVIDE (edata = .);}
379 } ${RELOCATING+ > ${DATA_MEMORY}}
381 ${RELOCATING+__data_section_size = SIZEOF(.data);}
382 ${RELOCATING+PROVIDE (__data_section_size = SIZEOF(.data));}
383 ${RELOCATING+__data_image_end = __data_image + __data_section_size;}
385 ${RELOCATING+${PRE_COMPUTE_DATA_SIZE}}
387 /* .install ${RELOCATING-0}:
390 } ${RELOCATING+ > ${TEXT_MEMORY}} */
392 /* Relocation for some bss and data sections. */
393 ${RELOCATING-${BSS_DATA_RELOC}}
394 ${RELOCATING-${SOFT_REGS_RELOC}}
396 .bss ${RELOCATING-0} :
398 ${RELOCATING+__bss_start = .;}
399 ${RELOCATING+*(.softregs)}
400 ${RELOCATING+*(.sbss)}
401 ${RELOCATING+*(.scommon)}
405 ${RELOCATING+*(.bss.*)}
406 ${RELOCATING+*(.gnu.linkonce.b.*)}
408 ${RELOCATING+PROVIDE (_end = .);}
409 } ${RELOCATING+ > ${DATA_MEMORY}}
410 ${RELOCATING+__bss_size = SIZEOF(.bss);}
411 ${RELOCATING+PROVIDE (__bss_size = SIZEOF(.bss));}
413 .eeprom ${RELOCATING-0} :
417 } ${RELOCATING+ > ${EEPROM_MEMORY}}
419 ${RELOCATING+${VECTORS}}
421 /* Stabs debugging sections. */
422 .stab 0 : { *(.stab) }
423 .stabstr 0 : { *(.stabstr) }
424 .stab.excl 0 : { *(.stab.excl) }
425 .stab.exclstr 0 : { *(.stab.exclstr) }
426 .stab.index 0 : { *(.stab.index) }
427 .stab.indexstr 0 : { *(.stab.indexstr) }
429 .comment 0 : { *(.comment) }
431 /* DWARF debug sections.
432 Symbols in the DWARF debugging sections are relative to the beginning
433 of the section so we begin them at 0.
434 Treatment of DWARF debug section must be at end of the linker
435 script to avoid problems when there are undefined symbols. It's necessary
436 to avoid that the DWARF section is relocated before such undefined
437 symbols are found. */
440 .debug 0 : { *(.debug) }
441 .line 0 : { *(.line) }
443 /* GNU DWARF 1 extensions */
444 .debug_srcinfo 0 : { *(.debug_srcinfo) }
445 .debug_sfnames 0 : { *(.debug_sfnames) }
447 /* DWARF 1.1 and DWARF 2 */
448 .debug_aranges 0 : { *(.debug_aranges) }
449 .debug_pubnames 0 : { *(.debug_pubnames) }
452 .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
453 .debug_abbrev 0 : { *(.debug_abbrev) }
454 .debug_line 0 : { *(.debug_line) }
455 .debug_frame 0 : { *(.debug_frame) }
456 .debug_str 0 : { *(.debug_str) }
457 .debug_loc 0 : { *(.debug_loc) }
458 .debug_macinfo 0 : { *(.debug_macinfo) }