Commit | Line | Data |
---|---|---|
60bcf0fa NC |
1 | # |
2 | # Unusual variables checked by this code: | |
3 | # NOP - two 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 | |
11 | # .text section. | |
12 | # DATA_START_SYMBOLS - symbols that appear at the start of the | |
13 | # .data section. | |
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. | |
17 | # | |
18 | # When adding sections, do note that the names of some sections are used | |
19 | # when specifying the start address of the next. | |
20 | # | |
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=. | |
26 | ||
27 | CTOR=".ctors ${CONSTRUCTING-0} : | |
28 | { | |
de0b1853 | 29 | ${CONSTRUCTING+ PROVIDE (__CTOR_LIST__ = .); } |
60bcf0fa NC |
30 | ${CONSTRUCTING+${CTOR_START}} |
31 | *(.ctors) | |
32 | /* We don't want to include the .ctor section from | |
33 | from the crtend.o file until after the sorted ctors. | |
34 | The .ctor section from the crtend file contains the | |
35 | end of ctors marker and it must be last | |
36 | ||
37 | KEEP (*(EXCLUDE_FILE (*crtend.o) .ctors)) | |
38 | KEEP (*(SORT(.ctors.*))) | |
39 | KEEP (*(.ctors)) */ | |
40 | ||
41 | ${CONSTRUCTING+${CTOR_END}} | |
de0b1853 | 42 | ${CONSTRUCTING+ PROVIDE(__CTOR_END__ = .); } |
60bcf0fa NC |
43 | } ${RELOCATING+ > ${DATA_MEMORY}}" |
44 | ||
45 | DTOR=" .dtors ${CONSTRUCTING-0} : | |
46 | { | |
de0b1853 | 47 | ${CONSTRUCTING+ PROVIDE(__DTOR_LIST__ = .); } |
60bcf0fa NC |
48 | *(.dtors) |
49 | /* | |
50 | KEEP (*crtbegin.o(.dtors)) | |
51 | KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors)) | |
52 | KEEP (*(SORT(.dtors.*))) | |
53 | KEEP (*(.dtors)) */ | |
de0b1853 | 54 | ${CONSTRUCTING+ PROVIDE(__DTOR_END__ = .); } |
60bcf0fa NC |
55 | } ${RELOCATING+ > ${DATA_MEMORY}}" |
56 | ||
57 | ||
58 | VECTORS=" | |
59 | /* If the 'vectors_addr' symbol is defined, it indicates the start address | |
60 | of interrupt vectors. This depends on the 68HC11 operating mode: | |
61 | ||
62 | Addr | |
63 | Single chip 0xffc0 | |
64 | Extended mode 0xffc0 | |
65 | Bootstrap 0x00c0 | |
66 | Test 0xbfc0 | |
67 | ||
68 | In general, the vectors address is 0xffc0. This can be overriden | |
69 | with the '-defsym vectors_addr=0xbfc0' ld option. | |
70 | ||
71 | Note: for the bootstrap mode, the interrupt vectors are at 0xbfc0 but | |
72 | they are redirected to 0x00c0 by the internal PROM. Application's vectors | |
73 | must also consist of jump instructions (see Motorola's manual). */ | |
74 | ||
75 | PROVIDE (_vectors_addr = DEFINED (vectors_addr) ? vectors_addr : 0xffc0); | |
76 | .vectors DEFINED (vectors_addr) ? vectors_addr : 0xffc0 : | |
77 | { | |
78 | *(.vectors) | |
79 | }" | |
80 | ||
81 | # | |
82 | # We provide two emulations: a fixed on that defines some memory banks | |
83 | # and a configurable one that includes a user provided memory definition. | |
84 | # | |
85 | case $GENERIC_BOARD in | |
86 | yes|1|YES) | |
87 | MEMORY_DEF=" | |
88 | /* Get memory banks definition from some user configuration file. | |
89 | This file must be located in some linker directory (search path | |
90 | with -L<dir>). See fixed memory banks emulation script. */ | |
91 | INCLUDE memory.x; | |
92 | " | |
93 | ;; | |
94 | *) | |
95 | MEMORY_DEF=" | |
96 | /* Fixed definition of the available memory banks. | |
97 | See generic emulation script for a user defined configuration. */ | |
98 | MEMORY | |
99 | { | |
100 | page0 (rwx) : ORIGIN = 0x0, LENGTH = 256 | |
101 | text (rx) : ORIGIN = ${ROM_START_ADDR}, LENGTH = ${ROM_SIZE} | |
102 | data : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE} | |
103 | } | |
104 | ||
105 | /* Setup the stack on the top of the data memory bank. */ | |
106 | PROVIDE (_stack = ${RAM_START_ADDR} + ${RAM_SIZE} - 1); | |
107 | " | |
108 | ;; | |
109 | esac | |
110 | ||
111 | STARTUP_CODE=" | |
112 | /* Startup code. */ | |
113 | *(.install0) /* Section should setup the stack pointer. */ | |
114 | *(.install1) /* Place holder for applications. */ | |
115 | *(.install2) /* Optional installation of data sections in RAM. */ | |
116 | *(.install3) /* Place holder for applications. */ | |
117 | *(.install4) /* Section that calls the main. */ | |
118 | " | |
119 | ||
de0b1853 SC |
120 | FINISH_CODE=" |
121 | /* Finish code. */ | |
122 | *(.fini0) /* Beginning of finish code (_exit symbol). */ | |
123 | *(.fini1) /* Place holder for applications. */ | |
124 | *(.fini2) /* C++ destructors. */ | |
125 | *(.fini3) /* Place holder for applications. */ | |
126 | *(.fini4) /* Runtime exit. */ | |
127 | " | |
128 | ||
60bcf0fa NC |
129 | PRE_COMPUTE_DATA_SIZE=" |
130 | /* SCz: this does not work yet... This is supposed to force the loading | |
131 | of _map_data.o (from libgcc.a) when the .data section is not empty. | |
132 | By doing so, this should bring the code that copies the .data section | |
133 | from ROM to RAM at init time. | |
134 | ||
135 | ___pre_comp_data_size = SIZEOF(.data); | |
136 | __install_data_sections = ___pre_comp_data_size > 0 ? | |
137 | __map_data_sections : 0; | |
138 | */ | |
139 | " | |
140 | ||
141 | INSTALL_RELOC=" | |
142 | .install0 0 : { *(.install0) } | |
143 | .install1 0 : { *(.install1) } | |
144 | .install2 0 : { *(.install2) } | |
145 | .install3 0 : { *(.install3) } | |
146 | .install4 0 : { *(.install4) } | |
147 | " | |
148 | ||
de0b1853 SC |
149 | FINISH_RELOC=" |
150 | .fini0 0 : { *(.fini0) } | |
151 | .fini1 0 : { *(.fini1) } | |
152 | .fini2 0 : { *(.fini2) } | |
153 | .fini3 0 : { *(.fini3) } | |
154 | .fini4 0 : { *(.fini4) } | |
155 | " | |
156 | ||
60bcf0fa NC |
157 | BSS_DATA_RELOC=" |
158 | .data1 0 : { *(.data1) } | |
159 | ||
160 | /* We want the small data sections together, so single-instruction offsets | |
161 | can access them all, and initialized data all before uninitialized, so | |
162 | we can shorten the on-disk segment size. */ | |
163 | .sdata 0 : { *(.sdata) } | |
164 | .sbss 0 : { *(.sbss) } | |
165 | .scommon 0 : { *(.scommon) } | |
166 | " | |
167 | ||
168 | cat <<EOF | |
169 | ${RELOCATING+/* Linker script for 68HC11 executable (PROM). */} | |
170 | ${RELOCATING-/* Linker script for 68HC11 object file (ld -r). */} | |
171 | ||
172 | OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", | |
173 | "${LITTLE_OUTPUT_FORMAT}") | |
174 | OUTPUT_ARCH(${OUTPUT_ARCH}) | |
175 | ENTRY(${ENTRY}) | |
176 | ||
177 | ${RELOCATING+${LIB_SEARCH_DIRS}} | |
178 | ${RELOCATING+${EXECUTABLE_SYMBOLS}} | |
179 | ${RELOCATING+${MEMORY_DEF}} | |
180 | ||
181 | SECTIONS | |
182 | { | |
183 | .hash ${RELOCATING-0} : { *(.hash) } | |
184 | .dynsym ${RELOCATING-0} : { *(.dynsym) } | |
185 | .dynstr ${RELOCATING-0} : { *(.dynstr) } | |
186 | .gnu.version ${RELOCATING-0} : { *(.gnu.version) } | |
187 | .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) } | |
188 | .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) } | |
189 | ||
de0b1853 SC |
190 | .rel.text ${RELOCATING-0} : |
191 | { | |
192 | *(.rel.text) | |
193 | ${RELOCATING+*(.rel.text.*)} | |
194 | ${RELOCATING+*(.rel.gnu.linkonce.t.*)} | |
195 | } | |
196 | .rela.text ${RELOCATING-0} : | |
197 | { | |
198 | *(.rela.text) | |
199 | ${RELOCATING+*(.rela.text.*)} | |
200 | ${RELOCATING+*(.rela.gnu.linkonce.t.*)} | |
201 | } | |
202 | .rel.data ${RELOCATING-0} : | |
203 | { | |
204 | *(.rel.data) | |
205 | ${RELOCATING+*(.rel.data.*)} | |
206 | ${RELOCATING+*(.rel.gnu.linkonce.d.*)} | |
207 | } | |
208 | .rela.data ${RELOCATING-0} : | |
209 | { | |
210 | *(.rela.data) | |
211 | ${RELOCATING+*(.rela.data.*)} | |
212 | ${RELOCATING+*(.rela.gnu.linkonce.d.*)} | |
213 | } | |
214 | .rel.rodata ${RELOCATING-0} : | |
215 | { | |
216 | *(.rel.rodata) | |
217 | ${RELOCATING+*(.rel.rodata.*)} | |
218 | ${RELOCATING+*(.rel.gnu.linkonce.r.*)} | |
219 | } | |
220 | .rela.rodata ${RELOCATING-0} : | |
221 | { | |
222 | *(.rela.rodata) | |
223 | ${RELOCATING+*(.rela.rodata.*)} | |
224 | ${RELOCATING+*(.rela.gnu.linkonce.r.*)} | |
225 | } | |
226 | .rel.sdata ${RELOCATING-0} : | |
227 | { | |
228 | *(.rel.sdata) | |
229 | ${RELOCATING+*(.rel.sdata.*)} | |
230 | ${RELOCATING+*(.rel.gnu.linkonce.s.*)} | |
231 | } | |
232 | .rela.sdata ${RELOCATING-0} : | |
233 | { | |
234 | *(.rela.sdata) | |
235 | ${RELOCATING+*(.rela.sdata.*)} | |
236 | ${RELOCATING+*(.rela.gnu.linkonce.s.*)} | |
237 | } | |
238 | .rel.sbss ${RELOCATING-0} : | |
239 | { | |
240 | *(.rel.sbss) | |
241 | ${RELOCATING+*(.rel.sbss.*)} | |
242 | ${RELOCATING+*(.rel.gnu.linkonce.sb.*)} | |
243 | } | |
244 | .rela.sbss ${RELOCATING-0} : | |
245 | { | |
246 | *(.rela.sbss) | |
247 | ${RELOCATING+*(.rela.sbss.*)} | |
248 | ${RELOCATING+*(.rel.gnu.linkonce.sb.*)} | |
249 | } | |
250 | .rel.bss ${RELOCATING-0} : | |
251 | { | |
252 | *(.rel.bss) | |
253 | ${RELOCATING+*(.rel.bss.*)} | |
254 | ${RELOCATING+*(.rel.gnu.linkonce.b.*)} | |
255 | } | |
256 | .rela.bss ${RELOCATING-0} : | |
257 | { | |
258 | *(.rela.bss) | |
259 | ${RELOCATING+*(.rela.bss.*)} | |
260 | ${RELOCATING+*(.rela.gnu.linkonce.b.*)} | |
261 | } | |
60bcf0fa NC |
262 | .rela.stext ${RELOCATING-0} : { *(.rela.stest) } |
263 | .rela.etext ${RELOCATING-0} : { *(.rela.etest) } | |
264 | .rela.sdata ${RELOCATING-0} : { *(.rela.sdata) } | |
265 | .rela.edata ${RELOCATING-0} : { *(.rela.edata) } | |
266 | .rela.eit_v ${RELOCATING-0} : { *(.rela.eit_v) } | |
60bcf0fa NC |
267 | .rela.ebss ${RELOCATING-0} : { *(.rela.ebss) } |
268 | .rela.srodata ${RELOCATING-0} : { *(.rela.srodata) } | |
269 | .rela.erodata ${RELOCATING-0} : { *(.rela.erodata) } | |
270 | .rela.got ${RELOCATING-0} : { *(.rela.got) } | |
271 | .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } | |
272 | .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } | |
273 | .rela.init ${RELOCATING-0} : { *(.rela.init) } | |
274 | .rela.fini ${RELOCATING-0} : { *(.rela.fini) } | |
60bcf0fa NC |
275 | .rela.plt ${RELOCATING-0} : { *(.rela.plt) } |
276 | ||
60bcf0fa NC |
277 | .rel.stext ${RELOCATING-0} : { *(.rel.stest) } |
278 | .rel.etext ${RELOCATING-0} : { *(.rel.etest) } | |
279 | .rel.sdata ${RELOCATING-0} : { *(.rel.sdata) } | |
280 | .rel.edata ${RELOCATING-0} : { *(.rel.edata) } | |
60bcf0fa NC |
281 | .rel.ebss ${RELOCATING-0} : { *(.rel.ebss) } |
282 | .rel.eit_v ${RELOCATING-0} : { *(.rel.eit_v) } | |
283 | .rel.srodata ${RELOCATING-0} : { *(.rel.srodata) } | |
284 | .rel.erodata ${RELOCATING-0} : { *(.rel.erodata) } | |
285 | .rel.got ${RELOCATING-0} : { *(.rel.got) } | |
286 | .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } | |
287 | .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } | |
288 | .rel.init ${RELOCATING-0} : { *(.rel.init) } | |
289 | .rel.fini ${RELOCATING-0} : { *(.rel.fini) } | |
60bcf0fa NC |
290 | .rel.plt ${RELOCATING-0} : { *(.rel.plt) } |
291 | ||
292 | /* Concatenate .page0 sections. Put them in the page0 memory bank | |
293 | unless we are creating a relocatable file. */ | |
294 | .page0 : | |
295 | { | |
296 | *(.page0) | |
297 | } ${RELOCATING+ > page0} | |
298 | ||
299 | /* Start of text section. */ | |
300 | .stext ${RELOCATING-0} : | |
301 | { | |
302 | *(.stext) | |
303 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
304 | ||
305 | .init ${RELOCATING-0} : | |
306 | { | |
307 | *(.init) | |
308 | } ${RELOCATING+=${NOP-0}} | |
309 | ||
310 | ${RELOCATING-${INSTALL_RELOC}} | |
de0b1853 | 311 | ${RELOCATING-${FINISH_RELOC}} |
60bcf0fa NC |
312 | |
313 | .text ${RELOCATING-0}: | |
314 | { | |
315 | /* Put startup code at beginning so that _start keeps same address. */ | |
316 | ${RELOCATING+${STARTUP_CODE}} | |
317 | ||
318 | ${RELOCATING+*(.init)} | |
319 | *(.text) | |
de0b1853 | 320 | ${RELOCATING+*(.text.*)} |
60bcf0fa NC |
321 | /* .gnu.warning sections are handled specially by elf32.em. */ |
322 | *(.gnu.warning) | |
de0b1853 SC |
323 | ${RELOCATING+*(.gnu.linkonce.t.*)} |
324 | ||
325 | ${RELOCATING+${FINISH_CODE}} | |
60bcf0fa NC |
326 | |
327 | ${RELOCATING+_etext = .;} | |
328 | ${RELOCATING+PROVIDE (etext = .);} | |
329 | ||
330 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
331 | ||
332 | .eh_frame ${RELOCATING-0} : | |
333 | { | |
334 | *(.eh_frame) | |
335 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
336 | ||
337 | .rodata ${RELOCATING-0} : | |
338 | { | |
339 | *(.rodata) | |
de0b1853 SC |
340 | ${RELOCATING+*(.rodata.*)} |
341 | ${RELOCATING+*(.gnu.linkonce.r*)} | |
60bcf0fa NC |
342 | } ${RELOCATING+ > ${TEXT_MEMORY}} |
343 | ||
344 | .rodata1 ${RELOCATING-0} : | |
345 | { | |
346 | *(.rodata1) | |
347 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
348 | ||
de0b1853 SC |
349 | /* Constructor and destructor tables are in ROM. */ |
350 | ${RELOCATING+${CTOR}} | |
351 | ${RELOCATING+${DTOR}} | |
352 | ||
60bcf0fa NC |
353 | /* Start of the data section image in ROM. */ |
354 | ${RELOCATING+__data_image = .;} | |
355 | ${RELOCATING+PROVIDE (__data_image = .);} | |
356 | ||
357 | /* All read-only sections that normally go in PROM must be above. | |
358 | We construct the DATA image section in PROM at end of all these | |
359 | read-only sections. The data image must be copied at init time. | |
360 | Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */ | |
361 | .data ${RELOCATING-0} : ${RELOCATING+AT (__data_image)} | |
362 | { | |
363 | ${RELOCATING+__data_section_start = .;} | |
364 | ${RELOCATING+PROVIDE (__data_section_start = .);} | |
365 | ||
366 | ${RELOCATING+${DATA_START_SYMBOLS}} | |
367 | ${RELOCATING+*(.sdata)} | |
368 | *(.data) | |
de0b1853 | 369 | ${RELOCATING+*(.data.*)} |
60bcf0fa | 370 | ${RELOCATING+*(.data1)} |
de0b1853 | 371 | ${RELOCATING+*(.gnu.linkonce.d.*)} |
60bcf0fa NC |
372 | ${CONSTRUCTING+CONSTRUCTORS} |
373 | ||
374 | ${RELOCATING+_edata = .;} | |
375 | ${RELOCATING+PROVIDE (edata = .);} | |
376 | } ${RELOCATING+ > ${DATA_MEMORY}} | |
377 | ||
378 | ${RELOCATING+__data_section_size = SIZEOF(.data);} | |
379 | ${RELOCATING+PROVIDE (__data_section_size = SIZEOF(.data));} | |
380 | ${RELOCATING+__data_image_end = __data_image + __data_section_size;} | |
381 | ||
382 | ${RELOCATING+${PRE_COMPUTE_DATA_SIZE}} | |
383 | ||
384 | /* .install ${RELOCATING-0}: | |
385 | { | |
386 | . = _data_image_end; | |
387 | } ${RELOCATING+ > ${TEXT_MEMORY}} */ | |
388 | ||
389 | /* Relocation for some bss and data sections. */ | |
390 | ${RELOCATING-${BSS_DATA_RELOC}} | |
391 | ||
392 | .bss ${RELOCATING-0} : | |
393 | { | |
394 | ${RELOCATING+__bss_start = .;} | |
395 | ${RELOCATING+*(.sbss)} | |
396 | ${RELOCATING+*(.scommon)} | |
397 | ||
398 | *(.dynbss) | |
399 | *(.bss) | |
de0b1853 SC |
400 | ${RELOCATING+*(.bss.*)} |
401 | ${RELOCATING+*(.gnu.linkonce.b.*)} | |
60bcf0fa NC |
402 | *(COMMON) |
403 | ${RELOCATING+PROVIDE (_end = .);} | |
404 | } ${RELOCATING+ > ${DATA_MEMORY}} | |
236d5abf NC |
405 | ${RELOCATING+__bss_size = SIZEOF(.bss);} |
406 | ${RELOCATING+PROVIDE (__bss_size = SIZEOF(.bss));} | |
60bcf0fa | 407 | |
60bcf0fa NC |
408 | ${RELOCATING+${VECTORS}} |
409 | ||
410 | /* Stabs debugging sections. */ | |
411 | .stab 0 : { *(.stab) } | |
412 | .stabstr 0 : { *(.stabstr) } | |
413 | .stab.excl 0 : { *(.stab.excl) } | |
414 | .stab.exclstr 0 : { *(.stab.exclstr) } | |
415 | .stab.index 0 : { *(.stab.index) } | |
416 | .stab.indexstr 0 : { *(.stab.indexstr) } | |
417 | ||
418 | .comment 0 : { *(.comment) } | |
419 | ||
420 | /* DWARF debug sections. | |
421 | Symbols in the DWARF debugging sections are relative to the beginning | |
422 | of the section so we begin them at 0. | |
423 | Treatment of DWARF debug section must be at end of the linker | |
424 | script to avoid problems when there are undefined symbols. It's necessary | |
425 | to avoid that the DWARF section is relocated before such undefined | |
426 | symbols are found. */ | |
427 | ||
428 | /* DWARF 1 */ | |
429 | .debug 0 : { *(.debug) } | |
430 | .line 0 : { *(.line) } | |
431 | ||
432 | /* GNU DWARF 1 extensions */ | |
433 | .debug_srcinfo 0 : { *(.debug_srcinfo) } | |
434 | .debug_sfnames 0 : { *(.debug_sfnames) } | |
435 | ||
436 | /* DWARF 1.1 and DWARF 2 */ | |
437 | .debug_aranges 0 : { *(.debug_aranges) } | |
438 | .debug_pubnames 0 : { *(.debug_pubnames) } | |
439 | ||
440 | /* DWARF 2 */ | |
3a9d486c | 441 | .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) } |
60bcf0fa NC |
442 | .debug_abbrev 0 : { *(.debug_abbrev) } |
443 | .debug_line 0 : { *(.debug_line) } | |
444 | .debug_frame 0 : { *(.debug_frame) } | |
445 | .debug_str 0 : { *(.debug_str) } | |
446 | .debug_loc 0 : { *(.debug_loc) } | |
447 | .debug_macinfo 0 : { *(.debug_macinfo) } | |
448 | } | |
449 | EOF |