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Re: Add --enable-linker-verssion
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CommitLineData
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1#
2# Unusual variables checked by this code:
3# NOP - four byte opcode for no-op (defaults to 0)
4# NO_SMALL_DATA - no .sbss/.sbss2/.sdata/.sdata2 sections if not
5# empty.
6# OTHER_READONLY_SECTIONS - other than .text .init .rodata ...
7# (e.g., .PARISC.milli)
8# When adding sections, do note that the names of some sections are used
9# when specifying the start address of the next.
10#
11test -z "$ENTRY" && ENTRY=start
12test -z "${BIG_OUTPUT_FORMAT}" && BIG_OUTPUT_FORMAT=${OUTPUT_FORMAT}
13test -z "${LITTLE_OUTPUT_FORMAT}" && LITTLE_OUTPUT_FORMAT=${OUTPUT_FORMAT}
14# If we request a big endian toolchain, give a big endian linker
2bf2bf23 15test -z "$GOT" && GOT=".got ${RELOCATING-0} : {${RELOCATING+ *(.got.plt)} *(.got) } ${RELOCATING+ > ${DATA_MEMORY}}"
5fd82aa2 16test "${ARC_ENDIAN}" = "big" && OUTPUT_FORMAT=${BIG_OUTPUT_FORMAT}
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17if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH}; else OUTPUT_ARCH=${ARCH}:${MACHINE}; fi
18test -z "${ELFSIZE}" && ELFSIZE=32
19test -z "${ALIGNMENT}" && ALIGNMENT="${ELFSIZE} / 8"
20test "$LD_FLAG" = "N" && DATA_ADDR=.
21
6c19b93b 22CTOR=".ctors ${CONSTRUCTING-0} :
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23 {
24 ${CONSTRUCTING+${CTOR_START}}
25 /* gcc uses crtbegin.o to find the start of
26 the constructors, so we make sure it is
27 first. Because this is a wildcard, it
28 doesn't matter if the user does not
29 actually link against crtbegin.o; the
30 linker won't look for a file to match a
31 wildcard. The wildcard also means that it
32 doesn't matter which directory crtbegin.o
33 is in. */
34
35 KEEP (*crtbegin*.o(.ctors))
36
37 /* We don't want to include the .ctor section from
38 from the crtend.o file until after the sorted ctors.
39 The .ctor section from the crtend file contains the
40 end of ctors marker and it must be last */
41
42 KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .ctors))
43 KEEP (*(SORT(.ctors.*)))
44 KEEP (*(.ctors))
45 ${CONSTRUCTING+${CTOR_END}}
46 } ${RELOCATING+ > ${DATA_MEMORY}}"
47DTOR=".dtors ${CONSTRUCTING-0} :
48 {
49 ${CONSTRUCTING+${DTOR_START}}
50 KEEP (*crtbegin*.o(.dtors))
51 KEEP (*(EXCLUDE_FILE (*crtend*.o $OTHER_EXCLUDE_FILES) .dtors))
52 KEEP (*(SORT(.dtors.*)))
53 KEEP (*(.dtors))
54 ${CONSTRUCTING+${DTOR_END}}
55 } ${RELOCATING+ > ${DATA_MEMORY}}"
56
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57IVT="
58 /* If the 'ivtbase_addr' symbol is defined, it indicates the base address of
59 the interrupt vectors. See description of INT_VECTOR_BASE register. */
60
61 .ivt DEFINED (ivtbase_addr) ? ivtbase_addr : 0x00 :
62 {
63 ${RELOCATING+ PROVIDE (__ivtbase_addr = .); }
64 KEEP (*(.ivt));
65 } ${RELOCATING+ > ${STARTUP_MEMORY}}"
66
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67if test -z "${NO_SMALL_DATA}"; then
68 SBSS=".sbss ${RELOCATING-0} :
69 {
70 ${RELOCATING+PROVIDE (__sbss_start = .);}
71 ${RELOCATING+PROVIDE (___sbss_start = .);}
72 *(.dynsbss)
73 *(.sbss${RELOCATING+ .sbss.* .gnu.linkonce.sb.*})
74 *(.scommon)
75 ${RELOCATING+PROVIDE (__sbss_end = .);}
76 ${RELOCATING+PROVIDE (___sbss_end = .);}
77 } ${RELOCATING+ > ${SDATA_MEMORY}}"
78 SBSS2=".sbss2 ${RELOCATING-0} : { *(.sbss2${RELOCATING+ .sbss2.* .gnu.linkonce.sb2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}"
79 SDATA="/* We want the small data sections together, so single-instruction offsets
80 can access them all, and initialized data all before uninitialized, so
81 we can shorten the on-disk segment size. */
82 .sdata ${RELOCATING-0} :
83 {
84 ${RELOCATING+${SDATA_START_SYMBOLS}}
85 *(.sdata${RELOCATING+ .sdata.* .gnu.linkonce.s.*})
86
87 ${RELOCATING+_edata = .;}
88 ${RELOCATING+PROVIDE (edata = .);}
89 } ${RELOCATING+ > ${SDATA_MEMORY}}"
90 SDATA2=".sdata2 ${RELOCATING-0} : { *(.sdata2${RELOCATING+ .sdata2.* .gnu.linkonce.s2.*}) } ${RELOCATING+ > ${SDATA_MEMORY}}"
91 REL_SDATA=".rel.sdata ${RELOCATING-0} : { *(.rel.sdata${RELOCATING+ .rel.sdata.* .rel.gnu.linkonce.s.*}) }
92 .rela.sdata ${RELOCATING-0} : { *(.rela.sdata${RELOCATING+ .rela.sdata.* .rela.gnu.linkonce.s.*}) }"
93 REL_SBSS=".rel.sbss ${RELOCATING-0} : { *(.rel.sbss${RELOCATING+ .rel.sbss.* .rel.gnu.linkonce.sb.*}) }
94 .rela.sbss ${RELOCATING-0} : { *(.rela.sbss${RELOCATING+ .rela.sbss.* .rela.gnu.linkonce.sb.*}) }"
95 REL_SDATA2=".rel.sdata2 ${RELOCATING-0} : { *(.rel.sdata2${RELOCATING+ .rel.sdata2.* .rel.gnu.linkonce.s2.*}) }
96 .rela.sdata2 ${RELOCATING-0} : { *(.rela.sdata2${RELOCATING+ .rela.sdata2.* .rela.gnu.linkonce.s2.*}) }"
97 REL_SBSS2=".rel.sbss2 ${RELOCATING-0} : { *(.rel.sbss2${RELOCATING+ .rel.sbss2.* .rel.gnu.linkonce.sb2.*}) }
98 .rela.sbss2 ${RELOCATING-0} : { *(.rela.sbss2${RELOCATING+ .rela.sbss2.* .rela.gnu.linkonce.sb2.*}) }"
99fi
100
101#
102# We provide two emulations: a fixed on that defines some memory banks
103# and a configurable one that includes a user provided memory definition.
104#
105case $GENERIC_BOARD in
106 yes|1|YES)
107 MEMORY_DEF="
108/* Get memory banks definition from some user configuration file.
109 This file must be located in some linker directory (search path
110 with -L<dir>). See fixed memory banks emulation script. */
111INCLUDE memory.x;
112"
113 ;;
114 *)
115MEMORY_DEF="
116/* Fixed definition of the available memory banks.
117 See generic emulation script for a user defined configuration. */
118MEMORY
119{
120 ICCM : ORIGIN = 0x00000000, LENGTH = ${ICCM_SIZE}
121 DCCM : ORIGIN = ${RAM_START_ADDR}, LENGTH = ${RAM_SIZE}
122}
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123"
124 ;;
125esac
126
127cat <<EOF
128OUTPUT_FORMAT("${OUTPUT_FORMAT}", "${BIG_OUTPUT_FORMAT}", "${LITTLE_OUTPUT_FORMAT}")
129OUTPUT_ARCH(${OUTPUT_ARCH})
130${RELOCATING+ENTRY(${ENTRY})}
131
132${RELOCATING+${LIB_SEARCH_DIRS}}
133${RELOCATING+${EXECUTABLE_SYMBOLS}}
134${RELOCATING+${MEMORY_DEF}}
135
136SECTIONS
137{
8cb31bad 138 ${RELOCATING+${IVT}}
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139
140 /* Read-only sections, merged into text segment: */
141 ${TEXT_DYNAMIC+${DYNAMIC}}
142 .hash ${RELOCATING-0} : { *(.hash) }
143 .dynsym ${RELOCATING-0} : { *(.dynsym) }
144 .dynstr ${RELOCATING-0} : { *(.dynstr) }
145 .gnu.version ${RELOCATING-0} : { *(.gnu.version) }
146 .gnu.version_d ${RELOCATING-0} : { *(.gnu.version_d) }
147 .gnu.version_r ${RELOCATING-0} : { *(.gnu.version_r) }
148
149 .rel.init ${RELOCATING-0} : { *(.rel.init) }
150 .rela.init ${RELOCATING-0} : { *(.rela.init) }
151 .rel.text ${RELOCATING-0} : { *(.rel.text${RELOCATING+ .rel.text.* .rel.gnu.linkonce.t.*}) }
152 .rela.text ${RELOCATING-0} : { *(.rela.text${RELOCATING+ .rela.text.* .rela.gnu.linkonce.t.*}) }
153 .rel.fini ${RELOCATING-0} : { *(.rel.fini) }
154 .rela.fini ${RELOCATING-0} : { *(.rela.fini) }
155 .rel.rodata ${RELOCATING-0} : { *(.rel.rodata${RELOCATING+ .rel.rodata.* .rel.gnu.linkonce.r.*}) }
156 .rela.rodata ${RELOCATING-0} : { *(.rela.rodata${RELOCATING+ .rela.rodata.* .rela.gnu.linkonce.r.*}) }
157 .rel.data ${RELOCATING-0} : { *(.rel.data${RELOCATING+ .rel.data.* .rel.gnu.linkonce.d.*}) }
158 .rela.data ${RELOCATING-0} : { *(.rela.data${RELOCATING+ .rela.data.* .rela.gnu.linkonce.d.*}) }
159 .rel.tdata ${RELOCATING-0} : { *(.rel.tdata${RELOCATING+ .rel.tdata.* .rel.gnu.linkonce.td.*}) }
160 .rela.tdata ${RELOCATING-0} : { *(.rela.tdata${RELOCATING+ .rela.tdata.* .rela.gnu.linkonce.td.*}) }
161 .rel.tbss ${RELOCATING-0} : { *(.rel.tbss${RELOCATING+ .rel.tbss.* .rel.gnu.linkonce.tb.*}) }
162 .rela.tbss ${RELOCATING-0} : { *(.rela.tbss${RELOCATING+ .rela.tbss.* .rela.gnu.linkonce.tb.*}) }
163 .rel.ctors ${RELOCATING-0} : { *(.rel.ctors) }
164 .rela.ctors ${RELOCATING-0} : { *(.rela.ctors) }
165 .rel.dtors ${RELOCATING-0} : { *(.rel.dtors) }
166 .rela.dtors ${RELOCATING-0} : { *(.rela.dtors) }
167 .rel.got ${RELOCATING-0} : { *(.rel.got) }
168 .rela.got ${RELOCATING-0} : { *(.rela.got) }
169 ${REL_SDATA}
170 ${REL_SBSS}
171 ${REL_SDATA2}
172 ${REL_SBSS2}
173 .rel.bss ${RELOCATING-0} : { *(.rel.bss${RELOCATING+ .rel.bss.* .rel.gnu.linkonce.b.*}) }
174 .rela.bss ${RELOCATING-0} : { *(.rela.bss${RELOCATING+ .rela.bss.* .rela.gnu.linkonce.b.*}) }
175
8cb31bad 176 .text ${RELOCATING-0} :
886a2506 177 {
8cb31bad 178 ${RELOCATING+${TEXT_START_SYMBOLS}}
886a2506 179
8cb31bad 180 ${RELOCATING+ . = ALIGN(4);}
886a2506 181 ${RELOCATING+${INIT_START}}
2d3181c7 182 KEEP (*(SORT_NONE(.init)))
886a2506 183 ${RELOCATING+${INIT_END}}
886a2506 184
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185 /* Start here after reset. */
186 ${RELOCATING+ . = ALIGN(4);}
187 KEEP (*crt0.o(.text.__startup))
886a2506 188
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189 /* Remaining code. */
190 ${RELOCATING+ . = ALIGN(4);}
886a2506 191 *(.text .stub${RELOCATING+ .text.* .gnu.linkonce.t.*})
075a2b89 192 /* .gnu.warning sections are handled specially by elf.em. */
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193 *(.gnu.warning)
194
195 ${RELOCATING+${OTHER_TEXT_SECTIONS}}
196
197 } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0}
198
199 .fini ${RELOCATING-0} :
200 {
201 ${RELOCATING+${FINI_START}}
2d3181c7 202 KEEP (*(SORT_NONE(.fini)))
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203 ${RELOCATING+${FINI_END}}
204
205 ${RELOCATING+PROVIDE (__etext = .);}
206 ${RELOCATING+PROVIDE (_etext = .);}
207 ${RELOCATING+PROVIDE (etext = .);}
208 } ${RELOCATING+ > ${TEXT_MEMORY}} =${NOP-0}
209
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210 .jcr ${RELOCATING-0} :
211 {
212 KEEP (*(.jcr))
213 } ${RELOCATING+> ${TEXT_MEMORY}}
214
215 .eh_frame ${RELOCATING-0} :
216 {
217 KEEP (*(.eh_frame))
218 } ${RELOCATING+> ${TEXT_MEMORY}}
219
220 .gcc_except_table ${RELOCATING-0} :
221 {
222 *(.gcc_except_table) *(.gcc_except_table.*)
223 } ${RELOCATING+> ${TEXT_MEMORY}}
224
225 .plt ${RELOCATING-0} :
226 {
227 *(.plt)
228 } ${RELOCATING+> ${TEXT_MEMORY}}
229
230 .jlitab ${RELOCATING-0} :
231 {
232 ${RELOCATING+${JLI_START_TABLE}}
233 jlitab*.o:(.jlitab*) *(.jlitab*)
234 } ${RELOCATING+> ${TEXT_MEMORY}}
235
236 .rodata ${RELOCATING-0} :
237 {
238 *(.rodata) ${RELOCATING+*(.rodata.*)} ${RELOCATING+*(.gnu.linkonce.r.*)}
239 } ${RELOCATING+> ${TEXT_MEMORY}}
240
241 .rodata1 ${RELOCATING-0} : { *(.rodata1) } ${RELOCATING+> ${TEXT_MEMORY}}
242
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243 ${RELOCATING+${OTHER_READONLY_SECTIONS}}
244
245 /* Start of the data section image in ROM. */
246 ${RELOCATING+__data_image = .;}
247 ${RELOCATING+PROVIDE (__data_image = .);}
248
249 .data ${RELOCATING-0} :
250 {
251 ${RELOCATING+ PROVIDE (__data_start = .) ; }
252 /* --gc-sections will delete empty .data. This leads to wrong start
253 addresses for subsequent sections because -Tdata= from the command
254 line will have no effect, see PR13697. Thus, keep .data */
255 KEEP (*(.data))
256 ${RELOCATING+${DATA_START_SYMBOLS}}
2bf2bf23 257 ${RELOCATING+*(.data.* .gnu.linkonce.d.*)}
886a2506
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258 ${CONSTRUCTING+SORT(CONSTRUCTORS)}
259
260 } ${RELOCATING+ > ${DATA_MEMORY}}
261
262 ${GOT}
263 ${RELOCATING+${CTOR}}
264 ${RELOCATING+${DTOR}}
265
266 ${RELOCATING+${SDATA}}
267 ${RELOCATING+${SDATA2}}
268 ${RELOCATING+${SBSS}}
269 ${RELOCATING+${SBSS2}}
270 .bss ${RELOCATING-0} :
271 {
2bf2bf23
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272 ${RELOCATING+*(.dynbss)}
273 *(.bss${RELOCATING+ .bss.* .gnu.linkonce.b.*})
274 ${RELOCATING+*(COMMON)
275 /* Align here to ensure that the .bss section occupies space up to
276 _end. Align after .bss to ensure correct alignment even if the
277 .bss section disappears because there are no input sections. */
278 . = ALIGN(${ALIGNMENT});}
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279 ${RELOCATING+_end = .;}
280 ${RELOCATING+PROVIDE (end = .);}
281 } ${RELOCATING+ > ${DATA_MEMORY}}
282
283 /* Global data not cleared after reset. */
284 .noinit ${RELOCATING-0}:
285 {
2c6f3e56 286 *(.noinit${RELOCATING+ .noinit.* .gnu.linkonce.n.*})
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287 ${RELOCATING+. = ALIGN(${ALIGNMENT});}
288 ${RELOCATING+ PROVIDE (__start_heap = .) ; }
289 } ${RELOCATING+ > ${DATA_MEMORY}}
290
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291 ${RELOCATING+ PROVIDE (__stack_top = (ORIGIN (${DATA_MEMORY}) + LENGTH (${DATA_MEMORY}) - 1) & -4);}
292 ${RELOCATING+ PROVIDE (__end_heap = ORIGIN (${DATA_MEMORY}) + LENGTH (${DATA_MEMORY}) - 1);}
886a2506 293
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294 .note.gnu.build-id : { *(.note.gnu.build-id) }
295EOF
886a2506 296
6752dd75
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297source_sh $srcdir/scripttempl/misc-sections.sc
298source_sh $srcdir/scripttempl/DWARF.sc
886a2506 299
8cb31bad 300cat <<EOF
886a2506 301 /* ARC Extension Sections */
8cb31bad 302 .arcextmap 0 : { *(.arcextmap.*) }
886a2506
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303}
304EOF