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 | { | |
29 | ${CONSTRUCTING+ __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+ __CTOR_END__ = .; } | |
43 | } ${RELOCATING+ > ${DATA_MEMORY}}" | |
44 | ||
45 | DTOR=" .dtors ${CONSTRUCTING-0} : | |
46 | { | |
47 | ${CONSTRUCTING+ __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+ __DTOR_END__ = .; } | |
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 | ||
120 | PRE_COMPUTE_DATA_SIZE=" | |
121 | /* SCz: this does not work yet... This is supposed to force the loading | |
122 | of _map_data.o (from libgcc.a) when the .data section is not empty. | |
123 | By doing so, this should bring the code that copies the .data section | |
124 | from ROM to RAM at init time. | |
125 | ||
126 | ___pre_comp_data_size = SIZEOF(.data); | |
127 | __install_data_sections = ___pre_comp_data_size > 0 ? | |
128 | __map_data_sections : 0; | |
129 | */ | |
130 | " | |
131 | ||
132 | INSTALL_RELOC=" | |
133 | .install0 0 : { *(.install0) } | |
134 | .install1 0 : { *(.install1) } | |
135 | .install2 0 : { *(.install2) } | |
136 | .install3 0 : { *(.install3) } | |
137 | .install4 0 : { *(.install4) } | |
138 | " | |
139 | ||
140 | BSS_DATA_RELOC=" | |
141 | .data1 0 : { *(.data1) } | |
142 | ||
143 | /* We want the small data sections together, so single-instruction offsets | |
144 | can access them all, and initialized data all before uninitialized, so | |
145 | we can shorten the on-disk segment size. */ | |
146 | .sdata 0 : { *(.sdata) } | |
147 | .sbss 0 : { *(.sbss) } | |
148 | .scommon 0 : { *(.scommon) } | |
149 | " | |
150 | ||
151 | cat <<EOF | |
152 | ${RELOCATING+/* Linker script for 68HC12 executable (PROM). */} | |
153 | ${RELOCATING-/* Linker script for 68HC12 object file (ld -r). */} | |
154 | ||
155 | OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", | |
156 | "${LITTLE_OUTPUT_FORMAT}") | |
157 | OUTPUT_ARCH(${OUTPUT_ARCH}) | |
158 | ENTRY(${ENTRY}) | |
159 | ||
160 | ${RELOCATING+${LIB_SEARCH_DIRS}} | |
161 | ${RELOCATING+${EXECUTABLE_SYMBOLS}} | |
162 | ${RELOCATING+${MEMORY_DEF}} | |
163 | ||
164 | SECTIONS | |
165 | { | |
166 | .hash ${RELOCATING-0} : { *(.hash) } | |
167 | .dynsym ${RELOCATING-0} : { *(.dynsym) } | |
168 | .dynstr ${RELOCATING-0} : { *(.dynstr) } | |
169 | .gnu.version ${RELOCATING-0} : { *(.gnu.version) } | |
170 | .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) } | |
171 | .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) } | |
172 | ||
173 | .rela.text ${RELOCATING-0} : { *(.rela.text) *(.rela.gnu.linkonce.t*) } | |
174 | .rela.data ${RELOCATING-0} : { *(.rela.data) *(.rela.gnu.linkonce.d*) } | |
175 | .rela.rodata ${RELOCATING-0} : { *(.rela.rodata) *(.rela.gnu.linkonce.r*) } | |
176 | .rela.stext ${RELOCATING-0} : { *(.rela.stest) } | |
177 | .rela.etext ${RELOCATING-0} : { *(.rela.etest) } | |
178 | .rela.sdata ${RELOCATING-0} : { *(.rela.sdata) } | |
179 | .rela.edata ${RELOCATING-0} : { *(.rela.edata) } | |
180 | .rela.eit_v ${RELOCATING-0} : { *(.rela.eit_v) } | |
181 | .rela.sbss ${RELOCATING-0} : { *(.rela.sbss) } | |
182 | .rela.ebss ${RELOCATING-0} : { *(.rela.ebss) } | |
183 | .rela.srodata ${RELOCATING-0} : { *(.rela.srodata) } | |
184 | .rela.erodata ${RELOCATING-0} : { *(.rela.erodata) } | |
185 | .rela.got ${RELOCATING-0} : { *(.rela.got) } | |
186 | .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) } | |
187 | .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) } | |
188 | .rela.init ${RELOCATING-0} : { *(.rela.init) } | |
189 | .rela.fini ${RELOCATING-0} : { *(.rela.fini) } | |
190 | .rela.bss ${RELOCATING-0} : { *(.rela.bss) } | |
191 | .rela.plt ${RELOCATING-0} : { *(.rela.plt) } | |
192 | ||
193 | .rel.data ${RELOCATING-0} : { *(.rel.data) *(.rel.gnu.linkonce.d*) } | |
194 | .rel.rodata ${RELOCATING-0} : { *(.rel.rodata) *(.rel.gnu.linkonce.r*) } | |
195 | .rel.stext ${RELOCATING-0} : { *(.rel.stest) } | |
196 | .rel.etext ${RELOCATING-0} : { *(.rel.etest) } | |
197 | .rel.sdata ${RELOCATING-0} : { *(.rel.sdata) } | |
198 | .rel.edata ${RELOCATING-0} : { *(.rel.edata) } | |
199 | .rel.sbss ${RELOCATING-0} : { *(.rel.sbss) } | |
200 | .rel.ebss ${RELOCATING-0} : { *(.rel.ebss) } | |
201 | .rel.eit_v ${RELOCATING-0} : { *(.rel.eit_v) } | |
202 | .rel.srodata ${RELOCATING-0} : { *(.rel.srodata) } | |
203 | .rel.erodata ${RELOCATING-0} : { *(.rel.erodata) } | |
204 | .rel.got ${RELOCATING-0} : { *(.rel.got) } | |
205 | .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) } | |
206 | .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) } | |
207 | .rel.init ${RELOCATING-0} : { *(.rel.init) } | |
208 | .rel.fini ${RELOCATING-0} : { *(.rel.fini) } | |
209 | .rel.bss ${RELOCATING-0} : { *(.rel.bss) } | |
210 | .rel.plt ${RELOCATING-0} : { *(.rel.plt) } | |
211 | ||
212 | /* Concatenate .page0 sections. Put them in the page0 memory bank | |
213 | unless we are creating a relocatable file. */ | |
214 | .page0 : | |
215 | { | |
216 | *(.page0) | |
217 | } ${RELOCATING+ > page0} | |
218 | ||
219 | /* Start of text section. */ | |
220 | .stext ${RELOCATING-0} : | |
221 | { | |
222 | *(.stext) | |
223 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
224 | ||
225 | .init ${RELOCATING-0} : | |
226 | { | |
227 | *(.init) | |
228 | } ${RELOCATING+=${NOP-0}} | |
229 | ||
230 | ${RELOCATING-${INSTALL_RELOC}} | |
231 | ||
232 | .text ${RELOCATING-0}: | |
233 | { | |
234 | /* Put startup code at beginning so that _start keeps same address. */ | |
235 | ${RELOCATING+${STARTUP_CODE}} | |
236 | ||
237 | ${RELOCATING+*(.init)} | |
238 | *(.text) | |
239 | *(.fini) | |
240 | /* .gnu.warning sections are handled specially by elf32.em. */ | |
241 | *(.gnu.warning) | |
242 | *(.gnu.linkonce.t*) | |
243 | ||
244 | ${RELOCATING+_etext = .;} | |
245 | ${RELOCATING+PROVIDE (etext = .);} | |
246 | ||
247 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
248 | ||
249 | .eh_frame ${RELOCATING-0} : | |
250 | { | |
251 | *(.eh_frame) | |
252 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
253 | ||
254 | .rodata ${RELOCATING-0} : | |
255 | { | |
256 | *(.rodata) | |
257 | *(.gnu.linkonce.r*) | |
258 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
259 | ||
260 | .rodata1 ${RELOCATING-0} : | |
261 | { | |
262 | *(.rodata1) | |
263 | } ${RELOCATING+ > ${TEXT_MEMORY}} | |
264 | ||
265 | /* Start of the data section image in ROM. */ | |
266 | ${RELOCATING+__data_image = .;} | |
267 | ${RELOCATING+PROVIDE (__data_image = .);} | |
268 | ||
269 | /* All read-only sections that normally go in PROM must be above. | |
270 | We construct the DATA image section in PROM at end of all these | |
271 | read-only sections. The data image must be copied at init time. | |
272 | Refer to GNU ld, Section 3.6.8.2 Output Section LMA. */ | |
273 | .data ${RELOCATING-0} : ${RELOCATING+AT (__data_image)} | |
274 | { | |
275 | ${RELOCATING+__data_section_start = .;} | |
276 | ${RELOCATING+PROVIDE (__data_section_start = .);} | |
277 | ||
278 | ${RELOCATING+${DATA_START_SYMBOLS}} | |
279 | ${RELOCATING+*(.sdata)} | |
280 | *(.data) | |
281 | ${RELOCATING+*(.data1)} | |
282 | *(.gnu.linkonce.d*) | |
283 | ${CONSTRUCTING+CONSTRUCTORS} | |
284 | ||
285 | ${RELOCATING+_edata = .;} | |
286 | ${RELOCATING+PROVIDE (edata = .);} | |
287 | } ${RELOCATING+ > ${DATA_MEMORY}} | |
288 | ||
289 | ${RELOCATING+__data_section_size = SIZEOF(.data);} | |
290 | ${RELOCATING+PROVIDE (__data_section_size = SIZEOF(.data));} | |
291 | ${RELOCATING+__data_image_end = __data_image + __data_section_size;} | |
292 | ||
293 | ${RELOCATING+${PRE_COMPUTE_DATA_SIZE}} | |
294 | ||
295 | /* .install ${RELOCATING-0}: | |
296 | { | |
297 | . = _data_image_end; | |
298 | } ${RELOCATING+ > ${TEXT_MEMORY}} */ | |
299 | ||
300 | /* Relocation for some bss and data sections. */ | |
301 | ${RELOCATING-${BSS_DATA_RELOC}} | |
302 | ||
303 | .bss ${RELOCATING-0} : | |
304 | { | |
305 | ${RELOCATING+__bss_start = .;} | |
306 | ${RELOCATING+*(.sbss)} | |
307 | ${RELOCATING+*(.scommon)} | |
308 | ||
309 | *(.dynbss) | |
310 | *(.bss) | |
311 | *(COMMON) | |
312 | ${RELOCATING+PROVIDE (_end = .);} | |
313 | } ${RELOCATING+ > ${DATA_MEMORY}} | |
236d5abf NC |
314 | ${RELOCATING+__bss_size = SIZEOF(.bss);} |
315 | ${RELOCATING+PROVIDE (__bss_size = SIZEOF(.bss));} | |
60bcf0fa NC |
316 | |
317 | ${RELOCATING+${CTOR}} | |
318 | ${RELOCATING+${DTOR}} | |
319 | ||
320 | ${RELOCATING+${VECTORS}} | |
321 | ||
322 | /* Stabs debugging sections. */ | |
323 | .stab 0 : { *(.stab) } | |
324 | .stabstr 0 : { *(.stabstr) } | |
325 | .stab.excl 0 : { *(.stab.excl) } | |
326 | .stab.exclstr 0 : { *(.stab.exclstr) } | |
327 | .stab.index 0 : { *(.stab.index) } | |
328 | .stab.indexstr 0 : { *(.stab.indexstr) } | |
329 | ||
330 | .comment 0 : { *(.comment) } | |
331 | ||
332 | /* DWARF debug sections. | |
333 | Symbols in the DWARF debugging sections are relative to the beginning | |
334 | of the section so we begin them at 0. | |
335 | Treatment of DWARF debug section must be at end of the linker | |
336 | script to avoid problems when there are undefined symbols. It's necessary | |
337 | to avoid that the DWARF section is relocated before such undefined | |
338 | symbols are found. */ | |
339 | ||
340 | /* DWARF 1 */ | |
341 | .debug 0 : { *(.debug) } | |
342 | .line 0 : { *(.line) } | |
343 | ||
344 | /* GNU DWARF 1 extensions */ | |
345 | .debug_srcinfo 0 : { *(.debug_srcinfo) } | |
346 | .debug_sfnames 0 : { *(.debug_sfnames) } | |
347 | ||
348 | /* DWARF 1.1 and DWARF 2 */ | |
349 | .debug_aranges 0 : { *(.debug_aranges) } | |
350 | .debug_pubnames 0 : { *(.debug_pubnames) } | |
351 | ||
352 | /* DWARF 2 */ | |
3a9d486c | 353 | .debug_info 0 : { *(.debug_info) *(.gnu.linkonce.wi.*) } |
60bcf0fa NC |
354 | .debug_abbrev 0 : { *(.debug_abbrev) } |
355 | .debug_line 0 : { *(.debug_line) } | |
356 | .debug_frame 0 : { *(.debug_frame) } | |
357 | .debug_str 0 : { *(.debug_str) } | |
358 | .debug_loc 0 : { *(.debug_loc) } | |
359 | .debug_macinfo 0 : { *(.debug_macinfo) } | |
360 | } | |
361 | EOF |