source: trunk/binutils/ld/scripttempl/elfm68hc11.sc@ 2927

Last change on this file since 2927 was 610, checked in by bird, 22 years ago

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which included commits to RCS files with non-trunk default branches.
  • Property cvs2svn:cvs-rev set to 1.1.1.2
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File size: 13.8 KB
Line 
1#
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
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#
21test -z "$ENTRY" && ENTRY=_start
22test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
23test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
24if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
25test "$LD_FLAG" = "N" && DATA_ADDR=.
26
27CTOR=".ctors ${CONSTRUCTING-0} :
28 {
29 ${CONSTRUCTING+ PROVIDE (__CTOR_LIST__ = .); }
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}}
42 ${CONSTRUCTING+ PROVIDE(__CTOR_END__ = .); }
43 } ${RELOCATING+ > ${TEXT_MEMORY}}"
44
45DTOR=" .dtors ${CONSTRUCTING-0} :
46 {
47 ${CONSTRUCTING+ PROVIDE(__DTOR_LIST__ = .); }
48 *(.dtors)
49 /*
50 KEEP (*crtbegin.o(.dtors))
51 KEEP (*(EXCLUDE_FILE (*crtend.o) .dtors))
52 KEEP (*(SORT(.dtors.*)))
53 KEEP (*(.dtors)) */
54 ${CONSTRUCTING+ PROVIDE(__DTOR_END__ = .); }
55 } ${RELOCATING+ > ${TEXT_MEMORY}}"
56
57
58VECTORS="
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 KEEP (*(.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#
85case $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. */
91INCLUDE memory.x;
92"
93 ;;
94 *)
95MEMORY_DEF="
96/* Fixed definition of the available memory banks.
97 See generic emulation script for a user defined configuration. */
98MEMORY
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 eeprom : ORIGIN = ${EEPROM_START_ADDR}, LENGTH = ${EEPROM_SIZE}
104}
105
106/* Setup the stack on the top of the data memory bank. */
107PROVIDE (_stack = ${RAM_START_ADDR} + ${RAM_SIZE} - 1);
108"
109 ;;
110esac
111
112STARTUP_CODE="
113 /* Startup code. */
114 KEEP (*(.install0)) /* Section should setup the stack pointer. */
115 KEEP (*(.install1)) /* Place holder for applications. */
116 KEEP (*(.install2)) /* Optional installation of data sections in RAM. */
117 KEEP (*(.install3)) /* Place holder for applications. */
118 KEEP (*(.install4)) /* Section that calls the main. */
119"
120
121FINISH_CODE="
122 /* Finish code. */
123 KEEP (*(.fini0)) /* Beginning of finish code (_exit symbol). */
124 KEEP (*(.fini1)) /* Place holder for applications. */
125 KEEP (*(.fini2)) /* C++ destructors. */
126 KEEP (*(.fini3)) /* Place holder for applications. */
127 KEEP (*(.fini4)) /* Runtime exit. */
128"
129
130PRE_COMPUTE_DATA_SIZE="
131/* SCz: this does not work yet... This is supposed to force the loading
132 of _map_data.o (from libgcc.a) when the .data section is not empty.
133 By doing so, this should bring the code that copies the .data section
134 from ROM to RAM at init time.
135
136 ___pre_comp_data_size = SIZEOF(.data);
137 __install_data_sections = ___pre_comp_data_size > 0 ?
138 __map_data_sections : 0;
139*/
140"
141
142INSTALL_RELOC="
143 .install0 0 : { *(.install0) }
144 .install1 0 : { *(.install1) }
145 .install2 0 : { *(.install2) }
146 .install3 0 : { *(.install3) }
147 .install4 0 : { *(.install4) }
148"
149
150FINISH_RELOC="
151 .fini0 0 : { *(.fini0) }
152 .fini1 0 : { *(.fini1) }
153 .fini2 0 : { *(.fini2) }
154 .fini3 0 : { *(.fini3) }
155 .fini4 0 : { *(.fini4) }
156"
157
158BSS_DATA_RELOC="
159 .data1 0 : { *(.data1) }
160
161 /* We want the small data sections together, so single-instruction offsets
162 can access them all, and initialized data all before uninitialized, so
163 we can shorten the on-disk segment size. */
164 .sdata 0 : { *(.sdata) }
165 .sbss 0 : { *(.sbss) }
166 .scommon 0 : { *(.scommon) }
167"
168
169SOFT_REGS_RELOC="
170 .softregs 0 : { *(.softregs) }
171"
172
173cat <<EOF
174${RELOCATING+/* Linker script for 68HC11 executable (PROM). */}
175${RELOCATING-/* Linker script for 68HC11 object file (ld -r). */}
176
177OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
178 "${LITTLE_OUTPUT_FORMAT}")
179OUTPUT_ARCH(${OUTPUT_ARCH})
180ENTRY(${ENTRY})
181
182${RELOCATING+${LIB_SEARCH_DIRS}}
183${RELOCATING+${EXECUTABLE_SYMBOLS}}
184${RELOCATING+${MEMORY_DEF}}
185
186SECTIONS
187{
188 .hash ${RELOCATING-0} : { *(.hash) }
189 .dynsym ${RELOCATING-0} : { *(.dynsym) }
190 .dynstr ${RELOCATING-0} : { *(.dynstr) }
191 .gnu.version ${RELOCATING-0} : { *(.gnu.version) }
192 .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
193 .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
194
195 .rel.text ${RELOCATING-0} :
196 {
197 *(.rel.text)
198 ${RELOCATING+*(.rel.text.*)}
199 ${RELOCATING+*(.rel.gnu.linkonce.t.*)}
200 }
201 .rela.text ${RELOCATING-0} :
202 {
203 *(.rela.text)
204 ${RELOCATING+*(.rela.text.*)}
205 ${RELOCATING+*(.rela.gnu.linkonce.t.*)}
206 }
207 .rel.data ${RELOCATING-0} :
208 {
209 *(.rel.data)
210 ${RELOCATING+*(.rel.data.*)}
211 ${RELOCATING+*(.rel.gnu.linkonce.d.*)}
212 }
213 .rela.data ${RELOCATING-0} :
214 {
215 *(.rela.data)
216 ${RELOCATING+*(.rela.data.*)}
217 ${RELOCATING+*(.rela.gnu.linkonce.d.*)}
218 }
219 .rel.rodata ${RELOCATING-0} :
220 {
221 *(.rel.rodata)
222 ${RELOCATING+*(.rel.rodata.*)}
223 ${RELOCATING+*(.rel.gnu.linkonce.r.*)}
224 }
225 .rela.rodata ${RELOCATING-0} :
226 {
227 *(.rela.rodata)
228 ${RELOCATING+*(.rela.rodata.*)}
229 ${RELOCATING+*(.rela.gnu.linkonce.r.*)}
230 }
231 .rel.sdata ${RELOCATING-0} :
232 {
233 *(.rel.sdata)
234 ${RELOCATING+*(.rel.sdata.*)}
235 ${RELOCATING+*(.rel.gnu.linkonce.s.*)}
236 }
237 .rela.sdata ${RELOCATING-0} :
238 {
239 *(.rela.sdata)
240 ${RELOCATING+*(.rela.sdata.*)}
241 ${RELOCATING+*(.rela.gnu.linkonce.s.*)}
242 }
243 .rel.sbss ${RELOCATING-0} :
244 {
245 *(.rel.sbss)
246 ${RELOCATING+*(.rel.sbss.*)}
247 ${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
248 }
249 .rela.sbss ${RELOCATING-0} :
250 {
251 *(.rela.sbss)
252 ${RELOCATING+*(.rela.sbss.*)}
253 ${RELOCATING+*(.rel.gnu.linkonce.sb.*)}
254 }
255 .rel.bss ${RELOCATING-0} :
256 {
257 *(.rel.bss)
258 ${RELOCATING+*(.rel.bss.*)}
259 ${RELOCATING+*(.rel.gnu.linkonce.b.*)}
260 }
261 .rela.bss ${RELOCATING-0} :
262 {
263 *(.rela.bss)
264 ${RELOCATING+*(.rela.bss.*)}
265 ${RELOCATING+*(.rela.gnu.linkonce.b.*)}
266 }
267 .rel.stext ${RELOCATING-0} : { *(.rel.stest) }
268 .rela.stext ${RELOCATING-0} : { *(.rela.stest) }
269 .rel.etext ${RELOCATING-0} : { *(.rel.etest) }
270 .rela.etext ${RELOCATING-0} : { *(.rela.etest) }
271 .rel.sdata ${RELOCATING-0} : { *(.rel.sdata) }
272 .rela.sdata ${RELOCATING-0} : { *(.rela.sdata) }
273 .rel.edata ${RELOCATING-0} : { *(.rel.edata) }
274 .rela.edata ${RELOCATING-0} : { *(.rela.edata) }
275 .rel.eit_v ${RELOCATING-0} : { *(.rel.eit_v) }
276 .rela.eit_v ${RELOCATING-0} : { *(.rela.eit_v) }
277 .rel.ebss ${RELOCATING-0} : { *(.rel.ebss) }
278 .rela.ebss ${RELOCATING-0} : { *(.rela.ebss) }
279 .rel.srodata ${RELOCATING-0} : { *(.rel.srodata) }
280 .rela.srodata ${RELOCATING-0} : { *(.rela.srodata) }
281 .rel.erodata ${RELOCATING-0} : { *(.rel.erodata) }
282 .rela.erodata ${RELOCATING-0} : { *(.rela.erodata) }
283 .rel.got ${RELOCATING-0} : { *(.rel.got) }
284 .rela.got ${RELOCATING-0} : { *(.rela.got) }
285 .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
286 .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
287 .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
288 .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
289 .rel.init ${RELOCATING-0} : { *(.rel.init) }
290 .rela.init ${RELOCATING-0} : { *(.rela.init) }
291 .rel.fini ${RELOCATING-0} : { *(.rel.fini) }
292 .rela.fini ${RELOCATING-0} : { *(.rela.fini) }
293 .rel.plt ${RELOCATING-0} : { *(.rel.plt) }
294 .rela.plt ${RELOCATING-0} : { *(.rela.plt) }
295
296 /* Concatenate .page0 sections. Put them in the page0 memory bank
297 unless we are creating a relocatable file. */
298 .page0 :
299 {
300 *(.page0)
301 ${RELOCATING+*(.softregs)}
302 } ${RELOCATING+ > page0}
303
304 /* Start of text section. */
305 .stext ${RELOCATING-0} :
306 {
307 *(.stext)
308 } ${RELOCATING+ > ${TEXT_MEMORY}}
309
310 .init ${RELOCATING-0} :
311 {
312 *(.init)
313 } ${RELOCATING+=${NOP-0}}
314
315 ${RELOCATING-${INSTALL_RELOC}}
316 ${RELOCATING-${FINISH_RELOC}}
317
318 .text ${RELOCATING-0}:
319 {
320 /* Put startup code at beginning so that _start keeps same address. */
321 ${RELOCATING+${STARTUP_CODE}}
322
323 ${RELOCATING+*(.init)}
324 *(.text)
325 ${RELOCATING+*(.text.*)}
326 /* .gnu.warning sections are handled specially by elf32.em. */
327 *(.gnu.warning)
328 ${RELOCATING+*(.gnu.linkonce.t.*)}
329
330 ${RELOCATING+${FINISH_CODE}}
331
332 ${RELOCATING+_etext = .;}
333 ${RELOCATING+PROVIDE (etext = .);}
334
335 } ${RELOCATING+ > ${TEXT_MEMORY}}
336
337 .eh_frame ${RELOCATING-0} :
338 {
339 KEEP (*(.eh_frame))
340 } ${RELOCATING+ > ${TEXT_MEMORY}}
341
342 .rodata ${RELOCATING-0} :
343 {
344 *(.rodata)
345 ${RELOCATING+*(.rodata.*)}
346 ${RELOCATING+*(.gnu.linkonce.r*)}
347 } ${RELOCATING+ > ${TEXT_MEMORY}}
348
349 .rodata1 ${RELOCATING-0} :
350 {
351 *(.rodata1)
352 } ${RELOCATING+ > ${TEXT_MEMORY}}
353
354 /* Constructor and destructor tables are in ROM. */
355 ${RELOCATING+${CTOR}}
356 ${RELOCATING+${DTOR}}
357
358 .jcr ${RELOCATING-0} :
359 {
360 KEEP (*(.jcr))
361 } ${RELOCATING+ > ${TEXT_MEMORY}}
362
363 /* Start of the data section image in ROM. */
364 ${RELOCATING+__data_image = .;}
365 ${RELOCATING+PROVIDE (__data_image = .);}
366
367 /* All read-only sections that normally go in PROM must be above.
368 We construct the DATA image section in PROM at end of all these
369 read-only sections. The data image must be copied at init time.
370 Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */
371 .data ${RELOCATING-0} : ${RELOCATING+AT (__data_image)}
372 {
373 ${RELOCATING+__data_section_start = .;}
374 ${RELOCATING+PROVIDE (__data_section_start = .);}
375
376 ${RELOCATING+${DATA_START_SYMBOLS}}
377 ${RELOCATING+*(.sdata)}
378 *(.data)
379 ${RELOCATING+*(.data.*)}
380 ${RELOCATING+*(.data1)}
381 ${RELOCATING+*(.gnu.linkonce.d.*)}
382 ${CONSTRUCTING+CONSTRUCTORS}
383
384 ${RELOCATING+_edata = .;}
385 ${RELOCATING+PROVIDE (edata = .);}
386 } ${RELOCATING+ > ${DATA_MEMORY}}
387
388 ${RELOCATING+__data_section_size = SIZEOF(.data);}
389 ${RELOCATING+PROVIDE (__data_section_size = SIZEOF(.data));}
390 ${RELOCATING+__data_image_end = __data_image + __data_section_size;}
391
392 ${RELOCATING+${PRE_COMPUTE_DATA_SIZE}}
393
394 /* .install ${RELOCATING-0}:
395 {
396 . = _data_image_end;
397 } ${RELOCATING+ > ${TEXT_MEMORY}} */
398
399 /* Relocation for some bss and data sections. */
400 ${RELOCATING-${BSS_DATA_RELOC}}
401 ${RELOCATING-${SOFT_REGS_RELOC}}
402
403 .bss ${RELOCATING-0} :
404 {
405 ${RELOCATING+__bss_start = .;}
406 ${RELOCATING+*(.sbss)}
407 ${RELOCATING+*(.scommon)}
408
409 *(.dynbss)
410 *(.bss)
411 ${RELOCATING+*(.bss.*)}
412 ${RELOCATING+*(.gnu.linkonce.b.*)}
413 *(COMMON)
414 ${RELOCATING+PROVIDE (_end = .);}
415 } ${RELOCATING+ > ${DATA_MEMORY}}
416 ${RELOCATING+__bss_size = SIZEOF(.bss);}
417 ${RELOCATING+PROVIDE (__bss_size = SIZEOF(.bss));}
418
419 .eeprom ${RELOCATING-0} :
420 {
421 *(.eeprom)
422 *(.eeprom.*)
423 } ${RELOCATING+ > ${EEPROM_MEMORY}}
424
425 ${RELOCATING+${VECTORS}}
426
427 /* Stabs debugging sections. */
428 .stab 0 : { *(.stab) }
429 .stabstr 0 : { *(.stabstr) }
430 .stab.excl 0 : { *(.stab.excl) }
431 .stab.exclstr 0 : { *(.stab.exclstr) }
432 .stab.index 0 : { *(.stab.index) }
433 .stab.indexstr 0 : { *(.stab.indexstr) }
434
435 .comment 0 : { *(.comment) }
436
437 /* DWARF debug sections.
438 Symbols in the DWARF debugging sections are relative to the beginning
439 of the section so we begin them at 0.
440 Treatment of DWARF debug section must be at end of the linker
441 script to avoid problems when there are undefined symbols. It's necessary
442 to avoid that the DWARF section is relocated before such undefined
443 symbols are found. */
444
445 /* DWARF 1 */
446 .debug 0 : { *(.debug) }
447 .line 0 : { *(.line) }
448
449 /* GNU DWARF 1 extensions */
450 .debug_srcinfo 0 : { *(.debug_srcinfo) }
451 .debug_sfnames 0 : { *(.debug_sfnames) }
452
453 /* DWARF 1.1 and DWARF 2 */
454 .debug_aranges 0 : { *(.debug_aranges) }
455 .debug_pubnames 0 : { *(.debug_pubnames) }
456
457 /* DWARF 2 */
458 .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) }
459 .debug_abbrev 0 : { *(.debug_abbrev) }
460 .debug_line 0 : { *(.debug_line) }
461 .debug_frame 0 : { *(.debug_frame) }
462 .debug_str 0 : { *(.debug_str) }
463 .debug_loc 0 : { *(.debug_loc) }
464 .debug_macinfo 0 : { *(.debug_macinfo) }
465}
466EOF
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