1 # This variant of elf.sc is used for ARM BPABI platforms, like Symbian
2 # OS, where a separate postlinker will operated on the generated
3 # executable or shared object. See elf.sc for configuration variables
4 # that apply; only BPABI-specific variables will be noted here.
6 test -z "$ENTRY" && ENTRY=_start
7 test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
8 test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
9 if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
10 test -z "${ELFSIZE}" && ELFSIZE=32
11 test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
12 test "$LD_FLAG" = "N" && DATA_ADDR=.
13 test -n "$CREATE_SHLIB$CREATE_PIE" && test -n "$SHLIB_DATA_ADDR" && COMMONPAGESIZE=""
14 test -z "$CREATE_SHLIB$CREATE_PIE" && test -n "$DATA_ADDR" && COMMONPAGESIZE=""
15 test -n "$RELRO_NOW" && unset SEPARATE_GOTPLT
16 DATA_SEGMENT_ALIGN="ALIGN(${SEGMENT_SIZE}) + (. & (${MAXPAGESIZE} - 1))"
17 DATA_SEGMENT_RELRO_END=""
18 DATA_SEGMENT_RELRO_GOTPLT_END=""
20 if test -n "${COMMONPAGESIZE}"; then
21 DATA_SEGMENT_ALIGN="ALIGN (${SEGMENT_SIZE}) - ((${MAXPAGESIZE} - .) & (${MAXPAGESIZE} - 1)); . = DATA_SEGMENT_ALIGN (${MAXPAGESIZE}, ${COMMONPAGESIZE})"
22 DATA_SEGMENT_END=". = DATA_SEGMENT_END (.);"
23 if test -n "${SEPARATE_GOTPLT}"; then
24 DATA_SEGMENT_RELRO_GOTPLT_END=". = DATA_SEGMENT_RELRO_END (. + ${SEPARATE_GOTPLT});"
26 DATA_SEGMENT_RELRO_END=". = DATA_SEGMENT_RELRO_END (.);"
29 INTERP=".interp 0 : { *(.interp) }"
30 PLT=".plt ${RELOCATING-0} : { *(.plt) }"
31 RODATA=".rodata ${RELOCATING-0} : { *(.rodata${RELOCATING+ .rodata.* .gnu.linkonce.r.*}) }"
32 DATARELRO=".data.rel.ro : { *(.data.rel.ro.local) *(.data.rel.ro*) }"
33 STACKNOTE="/DISCARD/ : { *(.note.GNU-stack) }"
34 if test -z "${NO_SMALL_DATA}"; then
35 SBSS=".sbss ${RELOCATING-0} :
37 ${RELOCATING+PROVIDE (__sbss_start = .);}
38 ${RELOCATING+PROVIDE (___sbss_start = .);}
40 *(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*})
42 ${RELOCATING+PROVIDE (__sbss_end = .);}
43 ${RELOCATING+PROVIDE (___sbss_end = .);}
45 SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) }"
46 SDATA="/* We want the small data sections together, so single-instruction offsets
47 can access them all, and initialized data all before uninitialized, so
48 we can shorten the on-disk segment size. */
49 .sdata ${RELOCATING-0} :
51 ${RELOCATING+${SDATA_START_SYMBOLS}}
52 *(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*})
54 SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) }"
55 REL_SDATA=".rel.sdata ${RELOCATING-0} : { *(.rel.sdata${RELOCATING+ .rel.sdata.* .rel.gnu.linkonce.s.*}) }
56 .rela.sdata ${RELOCATING-0} : { *(.rela.sdata${RELOCATING+ .rela.sdata.* .rela.gnu.linkonce.s.*}) }"
57 REL_SBSS=".rel.sbss ${RELOCATING-0} : { *(.rel.sbss${RELOCATING+ .rel.sbss.* .rel.gnu.linkonce.sb.*}) }
58 .rela.sbss ${RELOCATING-0} : { *(.rela.sbss${RELOCATING+ .rela.sbss.* .rela.gnu.linkonce.sb.*}) }"
59 REL_SDATA2=".rel.sdata2 ${RELOCATING-0} : { *(.rel.sdata2${RELOCATING+ .rel.sdata2.* .rel.gnu.linkonce.s2.*}) }
60 .rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2${RELOCATING+ .rela.sdata2.* .rela.gnu.linkonce.s2.*}) }"
61 REL_SBSS2=".rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) }
62 .rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }"
66 test -n "$SEPARATE_GOTPLT" && SEPARATE_GOTPLT=" "
67 CTOR=".ctors ${CONSTRUCTING-0} :
69 ${CONSTRUCTING+${CTOR_START}}
70 /* gcc uses crtbegin.o to find the start of
71 the constructors, so we make sure it is
72 first. Because this is a wildcard, it
73 doesn't matter if the user does not
74 actually link against crtbegin.o; the
75 linker won't look for a file to match a
76 wildcard. The wildcard also means that it
77 doesn't matter which directory crtbegin.o
80 KEEP (*crtbegin.o(.ctors))
81 KEEP (*crtbegin?.o(.ctors))
83 /* We don't want to include the .ctor section from
84 the crtend.o file until after the sorted ctors.
85 The .ctor section from the crtend file contains the
86 end of ctors marker and it must be last */
88 KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .ctors))
89 KEEP (*(SORT(.ctors.*)))
91 ${CONSTRUCTING+${CTOR_END}}
93 DTOR=".dtors ${CONSTRUCTING-0} :
95 ${CONSTRUCTING+${DTOR_START}}
96 KEEP (*crtbegin.o(.dtors))
97 KEEP (*crtbegin?.o(.dtors))
98 KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o $OTHER_EXCLUDE_FILES) .dtors))
99 KEEP (*(SORT(.dtors.*)))
101 ${CONSTRUCTING+${DTOR_END}}
103 STACK=" .stack ${RELOCATING-0}${RELOCATING+${STACK_ADDR}} :
105 ${RELOCATING+_stack = .;}
109 TEXT_START_ADDR="SEGMENT_START(\"text\", ${TEXT_START_ADDR})"
110 SHLIB_TEXT_START_ADDR="SEGMENT_START(\"text\", ${SHLIB_TEXT_START_ADDR:-0})"
111 DATA_ADDR="SEGMENT_START(\"data\", ${DATA_ADDR-${DATA_SEGMENT_ALIGN}})"
112 SHLIB_DATA_ADDR="SEGMENT_START(\"data\", ${SHLIB_DATA_ADDR-${DATA_SEGMENT_ALIGN}})"
114 # if this is for an embedded system, don't add SIZEOF_HEADERS.
115 if [ -z "$EMBEDDED" ]; then
116 test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR} + SIZEOF_HEADERS"
117 SHLIB_BASE_ADDRESS="${SHLIB_TEXT_START_ADDR} + SIZEOF_HEADERS"
119 test -z "${TEXT_BASE_ADDRESS}" && TEXT_BASE_ADDRESS="${TEXT_START_ADDR}"
120 SHLIB_BASE_ADDRESS="${SHLIB_TEXT_START_ADDR}"
124 OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}",
125 "${LITTLE_OUTPUT_FORMAT}")
126 OUTPUT_ARCH(${OUTPUT_ARCH})
129 ${RELOCATING+${LIB_SEARCH_DIRS}}
130 ${RELOCATING+/* Do we need any of these for elf?
131 __DYNAMIC = 0; ${STACKZERO+${STACKZERO}} ${SHLIB_PATH+${SHLIB_PATH}} */}
132 ${RELOCATING+${EXECUTABLE_SYMBOLS}}
133 ${RELOCATING+${INPUT_FILES}}
134 ${RELOCATING- /* For some reason, the Solaris linker makes bad executables
135 if gld -r is used and the intermediate file has sections starting
136 at non-zero addresses. Could be a Solaris ld bug, could be a GNU ld
137 bug. But for now assigning the zero vmas works. */}
139 /* ARM's proprietary toolchain generate these symbols to match the start
140 and end of particular sections of the image. SymbianOS uses these
141 symbols. We provide them for compatibility with ARM's toolchains.
142 These symbols should be bound locally; each shared object may define
143 its own version of these symbols. */
147 /* Give these a dummy version to work around linker lameness.
148 The name used shouldn't matter as these are all local symbols. */
151 Image\$\$ER_RO\$\$Base;
152 Image\$\$ER_RO\$\$Limit;
153 SHT\$\$INIT_ARRAY\$\$Base;
154 SHT\$\$INIT_ARRAY\$\$Limit;
162 /* Read-only sections, merged into text segment: */
163 ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+PROVIDE (__executable_start = ${TEXT_START_ADDR});}}}
165 ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+ . = ${TEXT_BASE_ADDRESS};}}}
166 ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_BASE_ADDRESS};}}
167 ${CREATE_PIE+${RELOCATING+. = ${SHLIB_BASE_ADDRESS};}}
169 /* Define Image\$\$ER_RO\$\$Base. */
170 ${RELOCATING+PROVIDE (Image\$\$ER_RO\$\$Base = .);}
172 ${INITIAL_READONLY_SECTIONS}
176 .init ${RELOCATING-0} :
178 ${RELOCATING+${INIT_START}}
180 ${RELOCATING+${INIT_END}}
182 .text ${RELOCATING-0} :
184 ${RELOCATING+${TEXT_START_SYMBOLS}}
185 *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})
186 KEEP (*(.text.*personality*))
187 /* .gnu.warning sections are handled specially by elf32.em. */
189 ${RELOCATING+${OTHER_TEXT_SECTIONS}}
191 .fini ${RELOCATING-0} :
193 ${RELOCATING+${FINI_START}}
195 ${RELOCATING+${FINI_END}}
197 /* The SymbianOS kernel requires that the PLT go at the end of the
199 ${DATA_PLT-${BSS_PLT-${PLT}}}
200 ${RELOCATING+PROVIDE (__etext = .);}
201 ${RELOCATING+PROVIDE (_etext = .);}
202 ${RELOCATING+PROVIDE (etext = .);}
204 /* Define Image\$\$ER_RO\$\$Limit. */
205 ${RELOCATING+PROVIDE (Image\$\$ER_RO\$\$Limit = .);}
207 ${WRITABLE_RODATA-${RODATA}}
208 .rodata1 ${RELOCATING-0} : { *(.rodata1) }
209 ${CREATE_SHLIB-${SDATA2}}
210 ${CREATE_SHLIB-${SBSS2}}
212 /* On SymbianOS, put .init_array and friends in the read-only
213 segment; there is no runtime relocation applied to these
216 .preinit_array ${RELOCATING-0} :
218 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__preinit_array_start = .);}}
219 KEEP (*(.preinit_array))
220 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__preinit_array_end = .);}}
222 .init_array ${RELOCATING-0} :
224 /* SymbianOS uses this symbol. */
225 ${RELOCATING+PROVIDE (SHT\$\$INIT_ARRAY\$\$Base = .);}
226 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__init_array_start = .);}}
227 KEEP (*(SORT(.init_array.*)))
228 KEEP (*(.init_array))
229 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__init_array_end = .);}}
230 /* SymbianOS uses this symbol. */
231 ${RELOCATING+PROVIDE (SHT\$\$INIT_ARRAY\$\$Limit = .);}
233 .fini_array ${RELOCATING-0} :
235 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__fini_array_start = .);}}
236 KEEP (*(.fini_array))
237 KEEP (*(SORT(.fini_array.*)))
238 ${RELOCATING+${CREATE_SHLIB-PROVIDE_HIDDEN (__fini_array_end = .);}}
241 ${OTHER_READONLY_SECTIONS}
242 .eh_frame_hdr : { *(.eh_frame_hdr) }
243 .eh_frame ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.eh_frame)) }
244 .gcc_except_table ${RELOCATING-0} : ONLY_IF_RO { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
246 /* Adjust the address for the data segment. We want to adjust up to
247 the same address within the page on the next page up. */
248 ${CREATE_SHLIB-${CREATE_PIE-${RELOCATING+. = ${DATA_ADDR};}}}
249 ${CREATE_SHLIB+${RELOCATING+. = ${SHLIB_DATA_ADDR};}}
250 ${CREATE_PIE+${RELOCATING+. = ${SHLIB_DATA_ADDR};}}
252 /* Exception handling */
253 .eh_frame ${RELOCATING-0} : ONLY_IF_RW { KEEP (*(.eh_frame)) }
254 .gcc_except_table ${RELOCATING-0} : ONLY_IF_RW { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
256 /* Thread Local Storage sections */
257 .tdata ${RELOCATING-0} : { *(.tdata${RELOCATING+ .tdata.* .gnu.linkonce.td.*}) }
258 .tbss ${RELOCATING-0} : { *(.tbss${RELOCATING+ .tbss.* .gnu.linkonce.tb.*})${RELOCATING+ *(.tcommon)} }
260 ${RELOCATING+${CTOR}}
261 ${RELOCATING+${DTOR}}
262 .jcr ${RELOCATING-0} : { KEEP (*(.jcr)) }
264 ${RELOCATING+${DATARELRO}}
265 ${OTHER_RELRO_SECTIONS}
266 ${RELOCATING+${DATA_SEGMENT_RELRO_END}}
268 ${DATA_PLT+${PLT_BEFORE_GOT-${PLT}}}
270 .data ${RELOCATING-0} :
272 ${RELOCATING+${DATA_START_SYMBOLS}}
273 *(.data${RELOCATING+ .data.* .gnu.linkonce.d.*})
274 KEEP (*(.gnu.linkonce.d.*personality*))
275 ${CONSTRUCTING+SORT(CONSTRUCTORS)}
277 .data1 ${RELOCATING-0} : { *(.data1) }
278 ${WRITABLE_RODATA+${RODATA}}
279 ${OTHER_READWRITE_SECTIONS}
280 ${DATA_PLT+${PLT_BEFORE_GOT+${PLT}}}
281 ${CREATE_SHLIB+${SDATA2}}
282 ${CREATE_SHLIB+${SBSS2}}
284 ${OTHER_SDATA_SECTIONS}
285 ${RELOCATING+_edata = .;}
286 ${RELOCATING+PROVIDE (edata = .);}
287 ${RELOCATING+. = DEFINED(__bss_segment_start) ? __bss_segment_start : .;}
288 ${RELOCATING+__bss_start = .;}
289 ${RELOCATING+${OTHER_BSS_SYMBOLS}}
292 .bss ${RELOCATING-0} :
295 *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})
297 /* Align here to ensure that the .bss section occupies space up to
298 _end. Align after .bss to ensure correct alignment even if the
299 .bss section disappears because there are no input sections. */
300 ${RELOCATING+. = ALIGN(${ALIGNMENT});}
302 ${RELOCATING+${OTHER_BSS_END_SYMBOLS}}
303 ${RELOCATING+. = ALIGN(${ALIGNMENT});}
304 ${RELOCATING+${OTHER_END_SYMBOLS}}
305 ${RELOCATING+_end = .;}
306 ${RELOCATING+PROVIDE (end = .);}
307 ${RELOCATING+${DATA_SEGMENT_END}}
309 /* These sections are not mapped under the BPABI. */
310 .dynamic 0 : { *(.dynamic) }
311 .hash 0 : { *(.hash) }
312 .dynsym 0 : { *(.dynsym) }
313 .dynstr 0 : { *(.dynstr) }
314 .gnu.version 0 : { *(.gnu.version) }
315 .gnu.version_d 0: { *(.gnu.version_d) }
316 .gnu.version_r 0: { *(.gnu.version_r) }
317 ${CREATE_SHLIB-${INTERP}}
319 /* Stabs debugging sections. */
320 .stab 0 : { *(.stab) }
321 .stabstr 0 : { *(.stabstr) }
322 .stab.excl 0 : { *(.stab.excl) }
323 .stab.exclstr 0 : { *(.stab.exclstr) }
324 .stab.index 0 : { *(.stab.index) }
325 .stab.indexstr 0 : { *(.stab.indexstr) }
327 .comment 0 : { *(.comment) }
329 /* DWARF debug sections.
330 Symbols in the DWARF debugging sections are relative to the beginning
331 of the section so we begin them at 0. */
334 .debug 0 : { *(.debug) }
335 .line 0 : { *(.line) }
337 /* GNU DWARF 1 extensions */
338 .debug_srcinfo 0 : { *(.debug_srcinfo) }
339 .debug_sfnames 0 : { *(.debug_sfnames) }
341 /* DWARF 1.1 and DWARF 2 */
342 .debug_aranges 0 : { *(.debug_aranges) }
343 .debug_pubnames 0 : { *(.debug_pubnames) }
346 .debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
347 .debug_abbrev 0 : { *(.debug_abbrev) }
348 .debug_line 0 : { *(.debug_line) }
349 .debug_frame 0 : { *(.debug_frame) }
350 .debug_str 0 : { *(.debug_str) }
351 .debug_loc 0 : { *(.debug_loc) }
352 .debug_macinfo 0 : { *(.debug_macinfo) }
354 /* SGI/MIPS DWARF 2 extensions */
355 .debug_weaknames 0 : { *(.debug_weaknames) }
356 .debug_funcnames 0 : { *(.debug_funcnames) }
357 .debug_typenames 0 : { *(.debug_typenames) }
358 .debug_varnames 0 : { *(.debug_varnames) }
360 ${STACK_ADDR+${STACK}}
362 ${RELOCATING+${OTHER_SYMBOLS}}
363 ${RELOCATING+${STACKNOTE}}
366 # These relocations sections are part of the read-only segment in SVR4
367 # executables, but are not mapped in BPABI executables.
368 if [ "x$COMBRELOC" = x ]; then
371 COMBRELOCCAT="cat > $COMBRELOC"
373 eval $COMBRELOCCAT <<EOF
374 .rel.init 0 : { *(.rel.init) }
375 .rela.init 0 : { *(.rela.init) }
376 .rel.text 0 : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
377 .rela.text 0 : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
378 .rel.fini 0 : { *(.rel.fini) }
379 .rela.fini 0 : { *(.rela.fini) }
380 .rel.rodata 0 : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
381 .rela.rodata 0 : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
382 ${OTHER_READONLY_RELOC_SECTIONS}
383 .rel.data.rel.ro 0 : { *(.rel.data.rel.ro${RELOCATING+*}) }
384 .rela.data.rel.ro 0 : { *(.rel.data.rel.ro${RELOCATING+*}) }
385 .rel.data 0 : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
386 .rela.data 0 : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
387 .rel.tdata 0 : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
388 .rela.tdata 0 : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
389 .rel.tbss 0 : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
390 .rela.tbss 0 : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
391 .rel.ctors 0 : { *(.rel.ctors) }
392 .rela.ctors 0 : { *(.rela.ctors) }
393 .rel.dtors 0 : { *(.rel.dtors) }
394 .rela.dtors 0 : { *(.rela.dtors) }
399 .rel.bss 0 : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
400 .rela.bss 0 : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
401 .rel.init_array 0 : { *(.rel.init_array) }
402 .rela.init_array 0 : { *(.rela.init_array) }
403 .rel.fini_array 0 : { *(.rel.fini_array) }
404 .rela.fini_array 0 : { *(.rela.fini_array) }
406 if [ -n "$COMBRELOC" ]; then
411 sed -e '/^[ ]*[{}][ ]*$/d;/:[ ]*$/d;/\.rela\./d;s/^.*: { *\(.*\)}$/ \1/' $COMBRELOC
417 sed -e '/^[ ]*[{}][ ]*$/d;/:[ ]*$/d;/\.rel\./d;s/^.*: { *\(.*\)}/ \1/' $COMBRELOC
423 .rel.plt 0 : { *(.rel.plt) }
424 .rela.plt 0 : { *(.rela.plt) }
425 ${OTHER_PLT_RELOC_SECTIONS}
426 .rel.other 0 : { *(.rel.*) }
427 .rela.other 0 : { *(.rela.*) }
428 .reli.other 0 : { *(.reli.*) }