Commit | Line | Data |
---|---|---|
ef53dae8 SR |
1 | /* |
2 | * Helper macros to support writing architecture specific | |
3 | * linker scripts. | |
4 | * | |
5 | * A minimal linker scripts has following content: | |
6 | * [This is a sample, architectures may have special requiriements] | |
7 | * | |
8 | * OUTPUT_FORMAT(...) | |
9 | * OUTPUT_ARCH(...) | |
10 | * ENTRY(...) | |
11 | * SECTIONS | |
12 | * { | |
13 | * . = START; | |
14 | * __init_begin = .; | |
7923f90f | 15 | * HEAD_TEXT_SECTION |
ef53dae8 SR |
16 | * INIT_TEXT_SECTION(PAGE_SIZE) |
17 | * INIT_DATA_SECTION(...) | |
0415b00d | 18 | * PERCPU_SECTION(CACHELINE_SIZE) |
ef53dae8 SR |
19 | * __init_end = .; |
20 | * | |
21 | * _stext = .; | |
22 | * TEXT_SECTION = 0 | |
23 | * _etext = .; | |
24 | * | |
25 | * _sdata = .; | |
93240b32 | 26 | * RO_DATA(PAGE_SIZE) |
c9174047 | 27 | * RW_DATA(...) |
ef53dae8 SR |
28 | * _edata = .; |
29 | * | |
30 | * EXCEPTION_TABLE(...) | |
ef53dae8 | 31 | * |
04e448d9 | 32 | * BSS_SECTION(0, 0, 0) |
ef53dae8 SR |
33 | * _end = .; |
34 | * | |
ef53dae8 SR |
35 | * STABS_DEBUG |
36 | * DWARF_DEBUG | |
c604abc3 | 37 | * ELF_DETAILS |
023bf6f1 TH |
38 | * |
39 | * DISCARDS // must be the last | |
ef53dae8 SR |
40 | * } |
41 | * | |
42 | * [__init_begin, __init_end] is the init section that may be freed after init | |
562c85ca YW |
43 | * // __init_begin and __init_end should be page aligned, so that we can |
44 | * // free the whole .init memory | |
ef53dae8 SR |
45 | * [_stext, _etext] is the text section |
46 | * [_sdata, _edata] is the data section | |
47 | * | |
48 | * Some of the included output section have their own set of constants. | |
49 | * Examples are: [__initramfs_start, __initramfs_end] for initramfs and | |
50 | * [__nosave_begin, __nosave_end] for the nosave data | |
51 | */ | |
c80d471a | 52 | |
1da177e4 LT |
53 | #ifndef LOAD_OFFSET |
54 | #define LOAD_OFFSET 0 | |
55 | #endif | |
56 | ||
441110a5 KC |
57 | /* |
58 | * Only some architectures want to have the .notes segment visible in | |
fbe6a8e6 KC |
59 | * a separate PT_NOTE ELF Program Header. When this happens, it needs |
60 | * to be visible in both the kernel text's PT_LOAD and the PT_NOTE | |
61 | * Program Headers. In this case, though, the PT_LOAD needs to be made | |
62 | * the default again so that all the following sections don't also end | |
63 | * up in the PT_NOTE Program Header. | |
441110a5 KC |
64 | */ |
65 | #ifdef EMITS_PT_NOTE | |
66 | #define NOTES_HEADERS :text :note | |
fbe6a8e6 KC |
67 | #define NOTES_HEADERS_RESTORE __restore_ph : { *(.__restore_ph) } :text |
68 | #else | |
69 | #define NOTES_HEADERS | |
70 | #define NOTES_HEADERS_RESTORE | |
441110a5 KC |
71 | #endif |
72 | ||
b8c2f776 KC |
73 | /* |
74 | * Some architectures have non-executable read-only exception tables. | |
75 | * They can be added to the RO_DATA segment by specifying their desired | |
76 | * alignment. | |
77 | */ | |
78 | #ifdef RO_EXCEPTION_TABLE_ALIGN | |
79 | #define RO_EXCEPTION_TABLE EXCEPTION_TABLE(RO_EXCEPTION_TABLE_ALIGN) | |
80 | #else | |
81 | #define RO_EXCEPTION_TABLE | |
82 | #endif | |
83 | ||
d49a0626 PZ |
84 | /* Align . function alignment. */ |
85 | #define ALIGN_FUNCTION() . = ALIGN(CONFIG_FUNCTION_ALIGNMENT) | |
6d30e3a8 | 86 | |
cb87481e NP |
87 | /* |
88 | * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which | |
89 | * generates .data.identifier sections, which need to be pulled in with | |
90 | * .data. We don't want to pull in .data..other sections, which Linux | |
91 | * has defined. Same for text and bss. | |
266ff2a8 | 92 | * |
dc5723b0 ST |
93 | * With LTO_CLANG, the linker also splits sections by default, so we need |
94 | * these macros to combine the sections during the final link. | |
95 | * | |
266ff2a8 NP |
96 | * RODATA_MAIN is not used because existing code already defines .rodata.x |
97 | * sections to be brought in with rodata. | |
cb87481e | 98 | */ |
dc5723b0 | 99 | #if defined(CONFIG_LD_DEAD_CODE_DATA_ELIMINATION) || defined(CONFIG_LTO_CLANG) |
cb87481e | 100 | #define TEXT_MAIN .text .text.[0-9a-zA-Z_]* |
49387f62 | 101 | #define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..L* .data..compoundliteral* .data.$__unnamed_* .data.$L* |
266ff2a8 | 102 | #define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]* |
9a427556 AL |
103 | #define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]* .rodata..L* |
104 | #define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* .bss..compoundliteral* | |
266ff2a8 | 105 | #define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]* |
cb87481e NP |
106 | #else |
107 | #define TEXT_MAIN .text | |
108 | #define DATA_MAIN .data | |
266ff2a8 NP |
109 | #define SDATA_MAIN .sdata |
110 | #define RODATA_MAIN .rodata | |
cb87481e | 111 | #define BSS_MAIN .bss |
266ff2a8 | 112 | #define SBSS_MAIN .sbss |
cb87481e NP |
113 | #endif |
114 | ||
07fca0e5 | 115 | /* |
85c2ce91 PZ |
116 | * GCC 4.5 and later have a 32 bytes section alignment for structures. |
117 | * Except GCC 4.9, that feels the need to align on 64 bytes. | |
07fca0e5 | 118 | */ |
aab94339 DB |
119 | #define STRUCT_ALIGNMENT 32 |
120 | #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) | |
07fca0e5 | 121 | |
590d6979 SRV |
122 | /* |
123 | * The order of the sched class addresses are important, as they are | |
124 | * used to determine the order of the priority of each sched class in | |
125 | * relation to each other. | |
126 | */ | |
127 | #define SCHED_DATA \ | |
c3a340f7 | 128 | STRUCT_ALIGN(); \ |
546a3fee | 129 | __sched_class_highest = .; \ |
c3a340f7 | 130 | *(__stop_sched_class) \ |
546a3fee PZ |
131 | *(__dl_sched_class) \ |
132 | *(__rt_sched_class) \ | |
133 | *(__fair_sched_class) \ | |
134 | *(__idle_sched_class) \ | |
135 | __sched_class_lowest = .; | |
590d6979 | 136 | |
eb8f6890 SR |
137 | /* The actual configuration determine if the init/exit sections |
138 | * are handled as text/data or they can be discarded (which | |
139 | * often happens at runtime) | |
140 | */ | |
eb8f6890 | 141 | |
1a3fb6d4 | 142 | #if defined(CONFIG_MEMORY_HOTPLUG) |
eb8f6890 SR |
143 | #define MEM_KEEP(sec) *(.mem##sec) |
144 | #define MEM_DISCARD(sec) | |
145 | #else | |
146 | #define MEM_KEEP(sec) | |
147 | #define MEM_DISCARD(sec) *(.mem##sec) | |
148 | #endif | |
149 | ||
9440155c PZI |
150 | #ifndef CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE |
151 | #define KEEP_PATCHABLE KEEP(*(__patchable_function_entries)) | |
152 | #define PATCHABLE_DISCARDS | |
153 | #else | |
154 | #define KEEP_PATCHABLE | |
155 | #define PATCHABLE_DISCARDS *(__patchable_function_entries) | |
156 | #endif | |
157 | ||
883bbbff PZ |
158 | #ifndef CONFIG_ARCH_SUPPORTS_CFI_CLANG |
159 | /* | |
160 | * Simply points to ftrace_stub, but with the proper protocol. | |
161 | * Defined by the linker script in linux/vmlinux.lds.h | |
162 | */ | |
163 | #define FTRACE_STUB_HACK ftrace_stub_graph = ftrace_stub; | |
164 | #else | |
165 | #define FTRACE_STUB_HACK | |
166 | #endif | |
167 | ||
8da3821b | 168 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
a1326b17 MR |
169 | /* |
170 | * The ftrace call sites are logged to a section whose name depends on the | |
171 | * compiler option used. A given kernel image will only use one, AKA | |
172 | * FTRACE_CALLSITE_SECTION. We capture all of them here to avoid header | |
173 | * dependencies for FTRACE_CALLSITE_SECTION's definition. | |
95f1fa9e | 174 | * |
34cdd18b SRV |
175 | * ftrace_ops_list_func will be defined as arch_ftrace_ops_list_func |
176 | * as some archs will have a different prototype for that function | |
177 | * but ftrace_ops_list_func() will have a single prototype. | |
a1326b17 | 178 | */ |
4b3b4c5e | 179 | #define MCOUNT_REC() . = ALIGN(8); \ |
a6214385 | 180 | __start_mcount_loc = .; \ |
266ff2a8 | 181 | KEEP(*(__mcount_loc)) \ |
9440155c | 182 | KEEP_PATCHABLE \ |
b83b43ff | 183 | __stop_mcount_loc = .; \ |
883bbbff | 184 | FTRACE_STUB_HACK \ |
34cdd18b | 185 | ftrace_ops_list_func = arch_ftrace_ops_list_func; |
8da3821b | 186 | #else |
b83b43ff | 187 | # ifdef CONFIG_FUNCTION_TRACER |
883bbbff | 188 | # define MCOUNT_REC() FTRACE_STUB_HACK \ |
34cdd18b | 189 | ftrace_ops_list_func = arch_ftrace_ops_list_func; |
b83b43ff SRV |
190 | # else |
191 | # define MCOUNT_REC() | |
192 | # endif | |
8da3821b | 193 | #endif |
eb8f6890 | 194 | |
435d6b65 JC |
195 | #define BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_) \ |
196 | _BEGIN_##_label_ = .; \ | |
9b351be2 | 197 | KEEP(*(_sec_)) \ |
435d6b65 | 198 | _END_##_label_ = .; |
9b351be2 | 199 | |
435d6b65 JC |
200 | #define BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_) \ |
201 | _label_##_BEGIN_ = .; \ | |
9b351be2 | 202 | KEEP(*(_sec_)) \ |
435d6b65 | 203 | _label_##_END_ = .; |
9b351be2 JC |
204 | |
205 | #define BOUNDED_SECTION_BY(_sec_, _label_) \ | |
206 | BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop) | |
207 | ||
208 | #define BOUNDED_SECTION(_sec) BOUNDED_SECTION_BY(_sec, _sec) | |
209 | ||
1d926e25 JC |
210 | #define HEADERED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \ |
211 | _HDR_##_label_ = .; \ | |
212 | KEEP(*(.gnu.linkonce.##_sec_)) \ | |
213 | BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_) | |
214 | ||
215 | #define HEADERED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \ | |
216 | _label_##_HDR_ = .; \ | |
217 | KEEP(*(.gnu.linkonce.##_sec_)) \ | |
218 | BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_) | |
219 | ||
220 | #define HEADERED_SECTION_BY(_sec_, _label_) \ | |
221 | HEADERED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop) | |
222 | ||
223 | #define HEADERED_SECTION(_sec) HEADERED_SECTION_BY(_sec, _sec) | |
224 | ||
2ed84eeb | 225 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
9b351be2 JC |
226 | #define LIKELY_PROFILE() \ |
227 | BOUNDED_SECTION_BY(_ftrace_annotated_branch, _annotated_branch_profile) | |
1f0d69a9 SR |
228 | #else |
229 | #define LIKELY_PROFILE() | |
230 | #endif | |
231 | ||
2bcd521a | 232 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
9b351be2 JC |
233 | #define BRANCH_PROFILE() \ |
234 | BOUNDED_SECTION_BY(_ftrace_branch, _branch_profile) | |
2bcd521a SR |
235 | #else |
236 | #define BRANCH_PROFILE() | |
237 | #endif | |
238 | ||
376e2424 | 239 | #ifdef CONFIG_KPROBES |
9b351be2 JC |
240 | #define KPROBE_BLACKLIST() \ |
241 | . = ALIGN(8); \ | |
242 | BOUNDED_SECTION(_kprobe_blacklist) | |
376e2424 MH |
243 | #else |
244 | #define KPROBE_BLACKLIST() | |
245 | #endif | |
246 | ||
540adea3 | 247 | #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
9b351be2 JC |
248 | #define ERROR_INJECT_WHITELIST() \ |
249 | STRUCT_ALIGN(); \ | |
250 | BOUNDED_SECTION(_error_injection_whitelist) | |
92ace999 | 251 | #else |
540adea3 | 252 | #define ERROR_INJECT_WHITELIST() |
92ace999 JB |
253 | #endif |
254 | ||
5f77a88b | 255 | #ifdef CONFIG_EVENT_TRACING |
9b351be2 JC |
256 | #define FTRACE_EVENTS() \ |
257 | . = ALIGN(8); \ | |
258 | BOUNDED_SECTION(_ftrace_events) \ | |
259 | BOUNDED_SECTION_BY(_ftrace_eval_map, _ftrace_eval_maps) | |
b77e38aa SR |
260 | #else |
261 | #define FTRACE_EVENTS() | |
262 | #endif | |
263 | ||
1ba28e02 | 264 | #ifdef CONFIG_TRACING |
9b351be2 JC |
265 | #define TRACE_PRINTKS() BOUNDED_SECTION_BY(__trace_printk_fmt, ___trace_bprintk_fmt) |
266 | #define TRACEPOINT_STR() BOUNDED_SECTION_BY(__tracepoint_str, ___tracepoint_str) | |
1ba28e02 LJ |
267 | #else |
268 | #define TRACE_PRINTKS() | |
102c9323 | 269 | #define TRACEPOINT_STR() |
1ba28e02 LJ |
270 | #endif |
271 | ||
bed1ffca | 272 | #ifdef CONFIG_FTRACE_SYSCALLS |
9b351be2 JC |
273 | #define TRACE_SYSCALLS() \ |
274 | . = ALIGN(8); \ | |
275 | BOUNDED_SECTION_BY(__syscalls_metadata, _syscalls_metadata) | |
bed1ffca FW |
276 | #else |
277 | #define TRACE_SYSCALLS() | |
278 | #endif | |
279 | ||
c4f6699d | 280 | #ifdef CONFIG_BPF_EVENTS |
9b351be2 JC |
281 | #define BPF_RAW_TP() STRUCT_ALIGN(); \ |
282 | BOUNDED_SECTION_BY(__bpf_raw_tp_map, __bpf_raw_tp) | |
c4f6699d AS |
283 | #else |
284 | #define BPF_RAW_TP() | |
285 | #endif | |
286 | ||
470ca0de | 287 | #ifdef CONFIG_SERIAL_EARLYCON |
9b351be2 JC |
288 | #define EARLYCON_TABLE() \ |
289 | . = ALIGN(8); \ | |
290 | BOUNDED_SECTION_POST_LABEL(__earlycon_table, __earlycon_table, , _end) | |
470ca0de PH |
291 | #else |
292 | #define EARLYCON_TABLE() | |
293 | #endif | |
aab94339 | 294 | |
3ac946d1 | 295 | #ifdef CONFIG_SECURITY |
9b351be2 JC |
296 | #define LSM_TABLE() \ |
297 | . = ALIGN(8); \ | |
298 | BOUNDED_SECTION_PRE_LABEL(.lsm_info.init, _lsm_info, __start, __end) | |
299 | ||
300 | #define EARLY_LSM_TABLE() \ | |
301 | . = ALIGN(8); \ | |
302 | BOUNDED_SECTION_PRE_LABEL(.early_lsm_info.init, _early_lsm_info, __start, __end) | |
3ac946d1 KC |
303 | #else |
304 | #define LSM_TABLE() | |
e6b1db98 | 305 | #define EARLY_LSM_TABLE() |
3ac946d1 KC |
306 | #endif |
307 | ||
06309288 RH |
308 | #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
309 | #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) | |
5ee02af1 | 310 | #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
06309288 RH |
311 | #define _OF_TABLE_0(name) |
312 | #define _OF_TABLE_1(name) \ | |
f6e916b8 | 313 | . = ALIGN(8); \ |
a6214385 | 314 | __##name##_of_table = .; \ |
4b89b7f7 NP |
315 | KEEP(*(__##name##_of_table)) \ |
316 | KEEP(*(__##name##_of_table_end)) | |
06309288 | 317 | |
bb0eb050 | 318 | #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) |
06309288 RH |
319 | #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
320 | #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) | |
321 | #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) | |
322 | #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) | |
449e056c | 323 | #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
6c3ff8b1 | 324 | |
e647b532 MZ |
325 | #ifdef CONFIG_ACPI |
326 | #define ACPI_PROBE_TABLE(name) \ | |
327 | . = ALIGN(8); \ | |
9b351be2 JC |
328 | BOUNDED_SECTION_POST_LABEL(__##name##_acpi_probe_table, \ |
329 | __##name##_acpi_probe_table,, _end) | |
e647b532 MZ |
330 | #else |
331 | #define ACPI_PROBE_TABLE(name) | |
332 | #endif | |
333 | ||
980af75e DL |
334 | #ifdef CONFIG_THERMAL |
335 | #define THERMAL_TABLE(name) \ | |
336 | . = ALIGN(8); \ | |
9b351be2 JC |
337 | BOUNDED_SECTION_POST_LABEL(__##name##_thermal_table, \ |
338 | __##name##_thermal_table,, _end) | |
980af75e DL |
339 | #else |
340 | #define THERMAL_TABLE(name) | |
341 | #endif | |
342 | ||
aab94339 DB |
343 | #define KERNEL_DTB() \ |
344 | STRUCT_ALIGN(); \ | |
a6214385 | 345 | __dtb_start = .; \ |
4b89b7f7 | 346 | KEEP(*(.dtb.init.rodata)) \ |
a6214385 | 347 | __dtb_end = .; |
aab94339 | 348 | |
b67067f1 NP |
349 | /* |
350 | * .data section | |
b67067f1 | 351 | */ |
ca967258 | 352 | #define DATA_DATA \ |
129f6c48 | 353 | *(.xiptext) \ |
cb87481e | 354 | *(DATA_MAIN) \ |
000f8870 | 355 | *(.data..decrypted) \ |
312b1485 | 356 | *(.ref.data) \ |
d356c0b6 | 357 | *(.data..shared_aligned) /* percpu related */ \ |
266ff2a8 | 358 | MEM_KEEP(init.data*) \ |
7ccaba53 | 359 | *(.data.unlikely) \ |
a6214385 | 360 | __start_once = .; \ |
b1fca27d | 361 | *(.data.once) \ |
a6214385 | 362 | __end_once = .; \ |
65498646 | 363 | STRUCT_ALIGN(); \ |
97e1c18e | 364 | *(__tracepoints) \ |
e9d376f0 JB |
365 | /* implement dynamic printk debug */ \ |
366 | . = ALIGN(8); \ | |
9b351be2 JC |
367 | BOUNDED_SECTION_BY(__dyndbg_classes, ___dyndbg_classes) \ |
368 | BOUNDED_SECTION_BY(__dyndbg, ___dyndbg) \ | |
2bcd521a | 369 | LIKELY_PROFILE() \ |
b77e38aa | 370 | BRANCH_PROFILE() \ |
102c9323 | 371 | TRACE_PRINTKS() \ |
c4f6699d | 372 | BPF_RAW_TP() \ |
69dfdce1 RM |
373 | TRACEPOINT_STR() \ |
374 | KUNIT_TABLE() | |
ca967258 | 375 | |
ef53dae8 SR |
376 | /* |
377 | * Data section helpers | |
378 | */ | |
379 | #define NOSAVE_DATA \ | |
380 | . = ALIGN(PAGE_SIZE); \ | |
a6214385 | 381 | __nosave_begin = .; \ |
07b3bb1e | 382 | *(.data..nosave) \ |
ef53dae8 | 383 | . = ALIGN(PAGE_SIZE); \ |
a6214385 | 384 | __nosave_end = .; |
ef53dae8 SR |
385 | |
386 | #define PAGE_ALIGNED_DATA(page_align) \ | |
387 | . = ALIGN(page_align); \ | |
de2b41be JR |
388 | *(.data..page_aligned) \ |
389 | . = ALIGN(page_align); | |
ef53dae8 SR |
390 | |
391 | #define READ_MOSTLY_DATA(align) \ | |
392 | . = ALIGN(align); \ | |
8369744f SL |
393 | *(.data..read_mostly) \ |
394 | . = ALIGN(align); | |
ef53dae8 SR |
395 | |
396 | #define CACHELINE_ALIGNED_DATA(align) \ | |
397 | . = ALIGN(align); \ | |
4af57b78 | 398 | *(.data..cacheline_aligned) |
ef53dae8 | 399 | |
39a449d9 | 400 | #define INIT_TASK_DATA(align) \ |
ef53dae8 | 401 | . = ALIGN(align); \ |
8f69cba0 | 402 | __start_init_stack = .; \ |
a6214385 MY |
403 | init_thread_union = .; \ |
404 | init_stack = .; \ | |
266ff2a8 NP |
405 | KEEP(*(.data..init_task)) \ |
406 | KEEP(*(.data..init_thread_info)) \ | |
8f69cba0 XLI |
407 | . = __start_init_stack + THREAD_SIZE; \ |
408 | __end_init_stack = .; | |
ef53dae8 | 409 | |
e872267b AB |
410 | #define JUMP_TABLE_DATA \ |
411 | . = ALIGN(8); \ | |
9b351be2 | 412 | BOUNDED_SECTION_BY(__jump_table, ___jump_table) |
e872267b | 413 | |
b44544fe | 414 | #ifdef CONFIG_HAVE_STATIC_CALL_INLINE |
9183c3f9 JP |
415 | #define STATIC_CALL_DATA \ |
416 | . = ALIGN(8); \ | |
9b351be2 JC |
417 | BOUNDED_SECTION_BY(.static_call_sites, _static_call_sites) \ |
418 | BOUNDED_SECTION_BY(.static_call_tramp_key, _static_call_tramp_key) | |
b44544fe PZ |
419 | #else |
420 | #define STATIC_CALL_DATA | |
421 | #endif | |
9183c3f9 | 422 | |
32fb2fc5 HC |
423 | /* |
424 | * Allow architectures to handle ro_after_init data on their | |
425 | * own by defining an empty RO_AFTER_INIT_DATA. | |
426 | */ | |
427 | #ifndef RO_AFTER_INIT_DATA | |
d7c19b06 | 428 | #define RO_AFTER_INIT_DATA \ |
7f897acb | 429 | . = ALIGN(8); \ |
a6214385 | 430 | __start_ro_after_init = .; \ |
d7c19b06 | 431 | *(.data..ro_after_init) \ |
e872267b | 432 | JUMP_TABLE_DATA \ |
9183c3f9 | 433 | STATIC_CALL_DATA \ |
a6214385 | 434 | __end_ro_after_init = .; |
32fb2fc5 HC |
435 | #endif |
436 | ||
89245600 ST |
437 | /* |
438 | * .kcfi_traps contains a list KCFI trap locations. | |
439 | */ | |
440 | #ifndef KCFI_TRAPS | |
441 | #ifdef CONFIG_ARCH_USES_CFI_TRAPS | |
442 | #define KCFI_TRAPS \ | |
443 | __kcfi_traps : AT(ADDR(__kcfi_traps) - LOAD_OFFSET) { \ | |
9b351be2 | 444 | BOUNDED_SECTION_BY(.kcfi_traps, ___kcfi_traps) \ |
89245600 ST |
445 | } |
446 | #else | |
447 | #define KCFI_TRAPS | |
448 | #endif | |
449 | #endif | |
450 | ||
ef53dae8 SR |
451 | /* |
452 | * Read only Data | |
453 | */ | |
93240b32 | 454 | #define RO_DATA(align) \ |
4096b46f | 455 | . = ALIGN((align)); \ |
1da177e4 | 456 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
a6214385 | 457 | __start_rodata = .; \ |
1da177e4 | 458 | *(.rodata) *(.rodata.*) \ |
590d6979 | 459 | SCHED_DATA \ |
32fb2fc5 | 460 | RO_AFTER_INIT_DATA /* Read only after init */ \ |
65498646 | 461 | . = ALIGN(8); \ |
9b351be2 | 462 | BOUNDED_SECTION_BY(__tracepoints_ptrs, ___tracepoints_ptrs) \ |
97e1c18e | 463 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
1da177e4 LT |
464 | } \ |
465 | \ | |
466 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ | |
467 | *(.rodata1) \ | |
468 | } \ | |
469 | \ | |
470 | /* PCI quirks */ \ | |
471 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ | |
9b351be2 JC |
472 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_early, _pci_fixups_early, __start, __end) \ |
473 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_header, _pci_fixups_header, __start, __end) \ | |
474 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_final, _pci_fixups_final, __start, __end) \ | |
475 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_enable, _pci_fixups_enable, __start, __end) \ | |
476 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume, _pci_fixups_resume, __start, __end) \ | |
477 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend, _pci_fixups_suspend, __start, __end) \ | |
478 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume_early, _pci_fixups_resume_early, __start, __end) \ | |
479 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend_late, _pci_fixups_suspend_late, __start, __end) \ | |
1da177e4 LT |
480 | } \ |
481 | \ | |
771856ca | 482 | FW_LOADER_BUILT_IN_DATA \ |
63687a52 JB |
483 | TRACEDATA \ |
484 | \ | |
33701557 CD |
485 | PRINTK_INDEX \ |
486 | \ | |
1da177e4 LT |
487 | /* Kernel symbol table: Normal symbols */ \ |
488 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ | |
a6214385 | 489 | __start___ksymtab = .; \ |
b67067f1 | 490 | KEEP(*(SORT(___ksymtab+*))) \ |
a6214385 | 491 | __stop___ksymtab = .; \ |
1da177e4 LT |
492 | } \ |
493 | \ | |
494 | /* Kernel symbol table: GPL-only symbols */ \ | |
495 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 496 | __start___ksymtab_gpl = .; \ |
b67067f1 | 497 | KEEP(*(SORT(___ksymtab_gpl+*))) \ |
a6214385 | 498 | __stop___ksymtab_gpl = .; \ |
1da177e4 LT |
499 | } \ |
500 | \ | |
501 | /* Kernel symbol table: Normal symbols */ \ | |
502 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ | |
a6214385 | 503 | __start___kcrctab = .; \ |
b67067f1 | 504 | KEEP(*(SORT(___kcrctab+*))) \ |
a6214385 | 505 | __stop___kcrctab = .; \ |
1da177e4 LT |
506 | } \ |
507 | \ | |
508 | /* Kernel symbol table: GPL-only symbols */ \ | |
509 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 510 | __start___kcrctab_gpl = .; \ |
b67067f1 | 511 | KEEP(*(SORT(___kcrctab_gpl+*))) \ |
a6214385 | 512 | __stop___kcrctab_gpl = .; \ |
1da177e4 LT |
513 | } \ |
514 | \ | |
515 | /* Kernel symbol table: strings */ \ | |
516 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ | |
4b89b7f7 | 517 | *(__ksymtab_strings) \ |
1da177e4 LT |
518 | } \ |
519 | \ | |
eb8f6890 SR |
520 | /* __*init sections */ \ |
521 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ | |
312b1485 | 522 | *(.ref.rodata) \ |
eb8f6890 | 523 | MEM_KEEP(init.rodata) \ |
eb8f6890 SR |
524 | } \ |
525 | \ | |
1da177e4 LT |
526 | /* Built-in module parameters. */ \ |
527 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ | |
9b351be2 | 528 | BOUNDED_SECTION_BY(__param, ___param) \ |
e94965ed DT |
529 | } \ |
530 | \ | |
531 | /* Built-in module versions. */ \ | |
532 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ | |
9b351be2 | 533 | BOUNDED_SECTION_BY(__modver, ___modver) \ |
7583ddfd | 534 | } \ |
eaf93707 | 535 | \ |
89245600 ST |
536 | KCFI_TRAPS \ |
537 | \ | |
b8c2f776 | 538 | RO_EXCEPTION_TABLE \ |
eaf93707 | 539 | NOTES \ |
90ceddcb | 540 | BTF \ |
eaf93707 KC |
541 | \ |
542 | . = ALIGN((align)); \ | |
543 | __end_rodata = .; | |
1da177e4 | 544 | |
cf68fffb | 545 | |
65538966 TG |
546 | /* |
547 | * Non-instrumentable text section | |
548 | */ | |
549 | #define NOINSTR_TEXT \ | |
550 | ALIGN_FUNCTION(); \ | |
551 | __noinstr_text_start = .; \ | |
552 | *(.noinstr.text) \ | |
2b5a0e42 PZ |
553 | __cpuidle_text_start = .; \ |
554 | *(.cpuidle.text) \ | |
555 | __cpuidle_text_end = .; \ | |
65538966 TG |
556 | __noinstr_text_end = .; |
557 | ||
cb87481e NP |
558 | /* |
559 | * .text section. Map to function alignment to avoid address changes | |
0f4c4af0 | 560 | * during second ld run in second ld pass when generating System.map |
cb87481e NP |
561 | * |
562 | * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead | |
563 | * code elimination is enabled, so these sections should be converted | |
564 | * to use ".." first. | |
565 | */ | |
7664709b SR |
566 | #define TEXT_TEXT \ |
567 | ALIGN_FUNCTION(); \ | |
eff8728f ND |
568 | *(.text.hot .text.hot.*) \ |
569 | *(TEXT_MAIN .text.fixup) \ | |
570 | *(.text.unlikely .text.unlikely.*) \ | |
571 | *(.text.unknown .text.unknown.*) \ | |
65538966 | 572 | NOINSTR_TEXT \ |
312b1485 | 573 | *(.ref.text) \ |
84837881 | 574 | *(.text.asan.* .text.tsan.*) \ |
266ff2a8 | 575 | MEM_KEEP(init.text*) \ |
eb8f6890 | 576 | |
7664709b | 577 | |
6d30e3a8 SR |
578 | /* sched.text is aling to function alignment to secure we have same |
579 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 580 | #define SCHED_TEXT \ |
6d30e3a8 | 581 | ALIGN_FUNCTION(); \ |
a6214385 | 582 | __sched_text_start = .; \ |
1da177e4 | 583 | *(.sched.text) \ |
a6214385 | 584 | __sched_text_end = .; |
1da177e4 | 585 | |
6d30e3a8 SR |
586 | /* spinlock.text is aling to function alignment to secure we have same |
587 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 588 | #define LOCK_TEXT \ |
6d30e3a8 | 589 | ALIGN_FUNCTION(); \ |
a6214385 | 590 | __lock_text_start = .; \ |
1da177e4 | 591 | *(.spinlock.text) \ |
a6214385 | 592 | __lock_text_end = .; |
d0aaff97 PP |
593 | |
594 | #define KPROBES_TEXT \ | |
595 | ALIGN_FUNCTION(); \ | |
a6214385 | 596 | __kprobes_text_start = .; \ |
d0aaff97 | 597 | *(.kprobes.text) \ |
a6214385 | 598 | __kprobes_text_end = .; |
a7d0c210 | 599 | |
ea714547 JO |
600 | #define ENTRY_TEXT \ |
601 | ALIGN_FUNCTION(); \ | |
a6214385 | 602 | __entry_text_start = .; \ |
ea714547 | 603 | *(.entry.text) \ |
a6214385 | 604 | __entry_text_end = .; |
ea714547 | 605 | |
a0343e82 FW |
606 | #define IRQENTRY_TEXT \ |
607 | ALIGN_FUNCTION(); \ | |
a6214385 | 608 | __irqentry_text_start = .; \ |
a0343e82 | 609 | *(.irqentry.text) \ |
a6214385 | 610 | __irqentry_text_end = .; |
a0343e82 | 611 | |
be7635e7 AP |
612 | #define SOFTIRQENTRY_TEXT \ |
613 | ALIGN_FUNCTION(); \ | |
a6214385 | 614 | __softirqentry_text_start = .; \ |
be7635e7 | 615 | *(.softirqentry.text) \ |
a6214385 | 616 | __softirqentry_text_end = .; |
be7635e7 | 617 | |
1e7e4788 JP |
618 | #define STATIC_CALL_TEXT \ |
619 | ALIGN_FUNCTION(); \ | |
620 | __static_call_text_start = .; \ | |
621 | *(.static_call.text) \ | |
622 | __static_call_text_end = .; | |
623 | ||
37c514e3 | 624 | /* Section used for early init (in .S files) */ |
266ff2a8 | 625 | #define HEAD_TEXT KEEP(*(.head.text)) |
37c514e3 | 626 | |
7923f90f | 627 | #define HEAD_TEXT_SECTION \ |
ef53dae8 SR |
628 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
629 | HEAD_TEXT \ | |
630 | } | |
631 | ||
632 | /* | |
633 | * Exception table | |
634 | */ | |
635 | #define EXCEPTION_TABLE(align) \ | |
636 | . = ALIGN(align); \ | |
637 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ | |
9b351be2 | 638 | BOUNDED_SECTION_BY(__ex_table, ___ex_table) \ |
ef53dae8 SR |
639 | } |
640 | ||
90ceddcb FS |
641 | /* |
642 | * .BTF | |
643 | */ | |
644 | #ifdef CONFIG_DEBUG_INFO_BTF | |
645 | #define BTF \ | |
646 | .BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { \ | |
9b351be2 | 647 | BOUNDED_SECTION_BY(.BTF, _BTF) \ |
5a2798ab JO |
648 | } \ |
649 | . = ALIGN(4); \ | |
650 | .BTF_ids : AT(ADDR(.BTF_ids) - LOAD_OFFSET) { \ | |
651 | *(.BTF_ids) \ | |
90ceddcb FS |
652 | } |
653 | #else | |
654 | #define BTF | |
655 | #endif | |
656 | ||
ef53dae8 SR |
657 | /* |
658 | * Init task | |
659 | */ | |
39a449d9 | 660 | #define INIT_TASK_DATA_SECTION(align) \ |
ef53dae8 | 661 | . = ALIGN(align); \ |
da5e37ef | 662 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
39a449d9 | 663 | INIT_TASK_DATA(align) \ |
ef53dae8 | 664 | } |
37c514e3 | 665 | |
b99b87f7 | 666 | #ifdef CONFIG_CONSTRUCTORS |
2a2325e6 | 667 | #define KERNEL_CTORS() . = ALIGN(8); \ |
a6214385 | 668 | __ctors_start = .; \ |
3e663148 | 669 | KEEP(*(SORT(.ctors.*))) \ |
4b89b7f7 NP |
670 | KEEP(*(.ctors)) \ |
671 | KEEP(*(SORT(.init_array.*))) \ | |
672 | KEEP(*(.init_array)) \ | |
a6214385 | 673 | __ctors_end = .; |
b99b87f7 PO |
674 | #else |
675 | #define KERNEL_CTORS() | |
676 | #endif | |
677 | ||
01ba2bdc | 678 | /* init and exit section handling */ |
eb8f6890 | 679 | #define INIT_DATA \ |
b67067f1 | 680 | KEEP(*(SORT(___kentry+*))) \ |
d4035ff1 | 681 | *(.init.data .init.data.*) \ |
266ff2a8 | 682 | MEM_DISCARD(init.data*) \ |
b99b87f7 | 683 | KERNEL_CTORS() \ |
4b3b4c5e | 684 | MCOUNT_REC() \ |
266ff2a8 | 685 | *(.init.rodata .init.rodata.*) \ |
e4a9ea5e | 686 | FTRACE_EVENTS() \ |
3d56e331 | 687 | TRACE_SYSCALLS() \ |
376e2424 | 688 | KPROBE_BLACKLIST() \ |
540adea3 | 689 | ERROR_INJECT_WHITELIST() \ |
aab94339 | 690 | MEM_DISCARD(init.rodata) \ |
f2f6c255 | 691 | CLK_OF_TABLES() \ |
f618c470 | 692 | RESERVEDMEM_OF_TABLES() \ |
2fcc112a | 693 | TIMER_OF_TABLES() \ |
6c3ff8b1 | 694 | CPU_METHOD_OF_TABLES() \ |
449e056c | 695 | CPUIDLE_METHOD_OF_TABLES() \ |
f6e916b8 | 696 | KERNEL_DTB() \ |
b0b6abd3 | 697 | IRQCHIP_OF_MATCH_TABLE() \ |
46e589a3 | 698 | ACPI_PROBE_TABLE(irqchip) \ |
2fcc112a | 699 | ACPI_PROBE_TABLE(timer) \ |
980af75e | 700 | THERMAL_TABLE(governor) \ |
3ac946d1 | 701 | EARLYCON_TABLE() \ |
e6b1db98 | 702 | LSM_TABLE() \ |
d81f0d7b RM |
703 | EARLY_LSM_TABLE() \ |
704 | KUNIT_INIT_TABLE() | |
eb8f6890 SR |
705 | |
706 | #define INIT_TEXT \ | |
266ff2a8 | 707 | *(.init.text .init.text.*) \ |
e41f501d | 708 | *(.text.startup) \ |
266ff2a8 | 709 | MEM_DISCARD(init.text*) |
eb8f6890 SR |
710 | |
711 | #define EXIT_DATA \ | |
266ff2a8 | 712 | *(.exit.data .exit.data.*) \ |
8dcf86ca PO |
713 | *(.fini_array .fini_array.*) \ |
714 | *(.dtors .dtors.*) \ | |
01ba2bdc | 715 | |
eb8f6890 SR |
716 | #define EXIT_TEXT \ |
717 | *(.exit.text) \ | |
e41f501d | 718 | *(.text.exit) \ |
01ba2bdc | 719 | |
7923f90f SR |
720 | #define EXIT_CALL \ |
721 | *(.exitcall.exit) | |
722 | ||
ef53dae8 SR |
723 | /* |
724 | * bss (Block Started by Symbol) - uninitialized data | |
725 | * zeroed during startup | |
726 | */ | |
04e448d9 TA |
727 | #define SBSS(sbss_align) \ |
728 | . = ALIGN(sbss_align); \ | |
ef53dae8 | 729 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
83a092cf | 730 | *(.dynsbss) \ |
266ff2a8 | 731 | *(SBSS_MAIN) \ |
ef53dae8 SR |
732 | *(.scommon) \ |
733 | } | |
734 | ||
c87728ca DD |
735 | /* |
736 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra | |
737 | * sections to the front of bss. | |
738 | */ | |
739 | #ifndef BSS_FIRST_SECTIONS | |
740 | #define BSS_FIRST_SECTIONS | |
741 | #endif | |
742 | ||
ef53dae8 SR |
743 | #define BSS(bss_align) \ |
744 | . = ALIGN(bss_align); \ | |
745 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ | |
c87728ca | 746 | BSS_FIRST_SECTIONS \ |
de2b41be | 747 | . = ALIGN(PAGE_SIZE); \ |
7c74df07 | 748 | *(.bss..page_aligned) \ |
de2b41be | 749 | . = ALIGN(PAGE_SIZE); \ |
ef53dae8 | 750 | *(.dynbss) \ |
cb87481e | 751 | *(BSS_MAIN) \ |
ef53dae8 | 752 | *(COMMON) \ |
ef53dae8 SR |
753 | } |
754 | ||
755 | /* | |
756 | * DWARF debug sections. | |
757 | * Symbols in the DWARF debugging sections are relative to | |
758 | * the beginning of the section so we begin them at 0. | |
759 | */ | |
a7d0c210 PBG |
760 | #define DWARF_DEBUG \ |
761 | /* DWARF 1 */ \ | |
762 | .debug 0 : { *(.debug) } \ | |
763 | .line 0 : { *(.line) } \ | |
764 | /* GNU DWARF 1 extensions */ \ | |
765 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ | |
766 | .debug_sfnames 0 : { *(.debug_sfnames) } \ | |
767 | /* DWARF 1.1 and DWARF 2 */ \ | |
768 | .debug_aranges 0 : { *(.debug_aranges) } \ | |
769 | .debug_pubnames 0 : { *(.debug_pubnames) } \ | |
770 | /* DWARF 2 */ \ | |
771 | .debug_info 0 : { *(.debug_info \ | |
772 | .gnu.linkonce.wi.*) } \ | |
773 | .debug_abbrev 0 : { *(.debug_abbrev) } \ | |
774 | .debug_line 0 : { *(.debug_line) } \ | |
775 | .debug_frame 0 : { *(.debug_frame) } \ | |
776 | .debug_str 0 : { *(.debug_str) } \ | |
777 | .debug_loc 0 : { *(.debug_loc) } \ | |
778 | .debug_macinfo 0 : { *(.debug_macinfo) } \ | |
83a092cf NP |
779 | .debug_pubtypes 0 : { *(.debug_pubtypes) } \ |
780 | /* DWARF 3 */ \ | |
781 | .debug_ranges 0 : { *(.debug_ranges) } \ | |
a7d0c210 PBG |
782 | /* SGI/MIPS DWARF 2 extensions */ \ |
783 | .debug_weaknames 0 : { *(.debug_weaknames) } \ | |
784 | .debug_funcnames 0 : { *(.debug_funcnames) } \ | |
785 | .debug_typenames 0 : { *(.debug_typenames) } \ | |
786 | .debug_varnames 0 : { *(.debug_varnames) } \ | |
83a092cf NP |
787 | /* GNU DWARF 2 extensions */ \ |
788 | .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \ | |
789 | .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \ | |
790 | /* DWARF 4 */ \ | |
791 | .debug_types 0 : { *(.debug_types) } \ | |
792 | /* DWARF 5 */ \ | |
3c4fa46b ND |
793 | .debug_addr 0 : { *(.debug_addr) } \ |
794 | .debug_line_str 0 : { *(.debug_line_str) } \ | |
795 | .debug_loclists 0 : { *(.debug_loclists) } \ | |
83a092cf | 796 | .debug_macro 0 : { *(.debug_macro) } \ |
3c4fa46b ND |
797 | .debug_names 0 : { *(.debug_names) } \ |
798 | .debug_rnglists 0 : { *(.debug_rnglists) } \ | |
799 | .debug_str_offsets 0 : { *(.debug_str_offsets) } | |
a7d0c210 | 800 | |
c604abc3 | 801 | /* Stabs debugging sections. */ |
a7d0c210 PBG |
802 | #define STABS_DEBUG \ |
803 | .stab 0 : { *(.stab) } \ | |
804 | .stabstr 0 : { *(.stabstr) } \ | |
805 | .stab.excl 0 : { *(.stab.excl) } \ | |
806 | .stab.exclstr 0 : { *(.stab.exclstr) } \ | |
807 | .stab.index 0 : { *(.stab.index) } \ | |
c604abc3 KC |
808 | .stab.indexstr 0 : { *(.stab.indexstr) } |
809 | ||
810 | /* Required sections not related to debugging. */ | |
811 | #define ELF_DETAILS \ | |
a840c4de KC |
812 | .comment 0 : { *(.comment) } \ |
813 | .symtab 0 : { *(.symtab) } \ | |
814 | .strtab 0 : { *(.strtab) } \ | |
815 | .shstrtab 0 : { *(.shstrtab) } | |
9c9b8b38 | 816 | |
6360b1fb | 817 | #ifdef CONFIG_GENERIC_BUG |
7664c5a1 JF |
818 | #define BUG_TABLE \ |
819 | . = ALIGN(8); \ | |
820 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ | |
9b351be2 | 821 | BOUNDED_SECTION_BY(__bug_table, ___bug_table) \ |
7664c5a1 | 822 | } |
6360b1fb JB |
823 | #else |
824 | #define BUG_TABLE | |
825 | #endif | |
7664c5a1 | 826 | |
11af8474 | 827 | #ifdef CONFIG_UNWINDER_ORC |
ee9f8fce | 828 | #define ORC_UNWIND_TABLE \ |
b9f174c8 OS |
829 | .orc_header : AT(ADDR(.orc_header) - LOAD_OFFSET) { \ |
830 | BOUNDED_SECTION_BY(.orc_header, _orc_header) \ | |
831 | } \ | |
ee9f8fce JP |
832 | . = ALIGN(4); \ |
833 | .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \ | |
9b351be2 | 834 | BOUNDED_SECTION_BY(.orc_unwind_ip, _orc_unwind_ip) \ |
ee9f8fce | 835 | } \ |
f76a16ad | 836 | . = ALIGN(2); \ |
ee9f8fce | 837 | .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ |
9b351be2 | 838 | BOUNDED_SECTION_BY(.orc_unwind, _orc_unwind) \ |
ee9f8fce | 839 | } \ |
ca136cac | 840 | text_size = _etext - _stext; \ |
ee9f8fce JP |
841 | . = ALIGN(4); \ |
842 | .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \ | |
a6214385 | 843 | orc_lookup = .; \ |
ca136cac | 844 | . += (((text_size + LOOKUP_BLOCK_SIZE - 1) / \ |
ee9f8fce | 845 | LOOKUP_BLOCK_SIZE) + 1) * 4; \ |
a6214385 | 846 | orc_lookup_end = .; \ |
ee9f8fce JP |
847 | } |
848 | #else | |
849 | #define ORC_UNWIND_TABLE | |
850 | #endif | |
851 | ||
771856ca LC |
852 | /* Built-in firmware blobs */ |
853 | #ifdef CONFIG_FW_LOADER | |
854 | #define FW_LOADER_BUILT_IN_DATA \ | |
855 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) { \ | |
9b351be2 | 856 | BOUNDED_SECTION_PRE_LABEL(.builtin_fw, _builtin_fw, __start, __end) \ |
771856ca LC |
857 | } |
858 | #else | |
859 | #define FW_LOADER_BUILT_IN_DATA | |
860 | #endif | |
861 | ||
63687a52 JB |
862 | #ifdef CONFIG_PM_TRACE |
863 | #define TRACEDATA \ | |
864 | . = ALIGN(4); \ | |
865 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ | |
9b351be2 | 866 | BOUNDED_SECTION_POST_LABEL(.tracedata, __tracedata, _start, _end) \ |
63687a52 JB |
867 | } |
868 | #else | |
869 | #define TRACEDATA | |
870 | #endif | |
871 | ||
33701557 CD |
872 | #ifdef CONFIG_PRINTK_INDEX |
873 | #define PRINTK_INDEX \ | |
874 | .printk_index : AT(ADDR(.printk_index) - LOAD_OFFSET) { \ | |
9b351be2 | 875 | BOUNDED_SECTION_BY(.printk_index, _printk_index) \ |
33701557 CD |
876 | } |
877 | #else | |
878 | #define PRINTK_INDEX | |
879 | #endif | |
880 | ||
99cb0d91 MY |
881 | /* |
882 | * Discard .note.GNU-stack, which is emitted as PROGBITS by the compiler. | |
883 | * Otherwise, the type of .notes section would become PROGBITS instead of NOTES. | |
f7ba52f3 JP |
884 | * |
885 | * Also, discard .note.gnu.property, otherwise it forces the notes section to | |
886 | * be 8-byte aligned which causes alignment mismatches with the kernel's custom | |
887 | * 4-byte aligned notes. | |
99cb0d91 | 888 | */ |
9c9b8b38 | 889 | #define NOTES \ |
f7ba52f3 JP |
890 | /DISCARD/ : { \ |
891 | *(.note.GNU-stack) \ | |
892 | *(.note.gnu.property) \ | |
893 | } \ | |
cbe87121 | 894 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
9b351be2 | 895 | BOUNDED_SECTION_BY(.note.*, _notes) \ |
fbe6a8e6 KC |
896 | } NOTES_HEADERS \ |
897 | NOTES_HEADERS_RESTORE | |
61ce1efe | 898 | |
ef53dae8 SR |
899 | #define INIT_SETUP(initsetup_align) \ |
900 | . = ALIGN(initsetup_align); \ | |
9b351be2 | 901 | BOUNDED_SECTION_POST_LABEL(.init.setup, __setup, _start, _end) |
ef53dae8 | 902 | |
026cee00 | 903 | #define INIT_CALLS_LEVEL(level) \ |
a6214385 | 904 | __initcall##level##_start = .; \ |
b67067f1 NP |
905 | KEEP(*(.initcall##level##.init)) \ |
906 | KEEP(*(.initcall##level##s.init)) \ | |
61ce1efe | 907 | |
ef53dae8 | 908 | #define INIT_CALLS \ |
a6214385 | 909 | __initcall_start = .; \ |
b67067f1 | 910 | KEEP(*(.initcallearly.init)) \ |
026cee00 PM |
911 | INIT_CALLS_LEVEL(0) \ |
912 | INIT_CALLS_LEVEL(1) \ | |
913 | INIT_CALLS_LEVEL(2) \ | |
914 | INIT_CALLS_LEVEL(3) \ | |
915 | INIT_CALLS_LEVEL(4) \ | |
916 | INIT_CALLS_LEVEL(5) \ | |
917 | INIT_CALLS_LEVEL(rootfs) \ | |
918 | INIT_CALLS_LEVEL(6) \ | |
919 | INIT_CALLS_LEVEL(7) \ | |
a6214385 | 920 | __initcall_end = .; |
ef53dae8 SR |
921 | |
922 | #define CON_INITCALL \ | |
9b351be2 | 923 | BOUNDED_SECTION_POST_LABEL(.con_initcall.init, __con_initcall, _start, _end) |
ef53dae8 | 924 | |
90a025a8 BH |
925 | /* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */ |
926 | #define KUNIT_TABLE() \ | |
927 | . = ALIGN(8); \ | |
9b351be2 | 928 | BOUNDED_SECTION_POST_LABEL(.kunit_test_suites, __kunit_suites, _start, _end) |
90a025a8 | 929 | |
d81f0d7b RM |
930 | /* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */ |
931 | #define KUNIT_INIT_TABLE() \ | |
932 | . = ALIGN(8); \ | |
933 | BOUNDED_SECTION_POST_LABEL(.kunit_init_test_suites, \ | |
934 | __kunit_init_suites, _start, _end) | |
935 | ||
ef53dae8 SR |
936 | #ifdef CONFIG_BLK_DEV_INITRD |
937 | #define INIT_RAM_FS \ | |
d8826262 | 938 | . = ALIGN(4); \ |
a6214385 | 939 | __initramfs_start = .; \ |
b67067f1 | 940 | KEEP(*(.init.ramfs)) \ |
ffe8018c | 941 | . = ALIGN(8); \ |
b67067f1 | 942 | KEEP(*(.init.ramfs.info)) |
ef53dae8 | 943 | #else |
eadfe219 | 944 | #define INIT_RAM_FS |
ef53dae8 SR |
945 | #endif |
946 | ||
ac26963a BS |
947 | /* |
948 | * Memory encryption operates on a page basis. Since we need to clear | |
949 | * the memory encryption mask for this section, it needs to be aligned | |
950 | * on a page boundary and be a page-size multiple in length. | |
951 | * | |
952 | * Note: We use a separate section so that only this section gets | |
953 | * decrypted to avoid exposing more than we wish. | |
954 | */ | |
955 | #ifdef CONFIG_AMD_MEM_ENCRYPT | |
956 | #define PERCPU_DECRYPTED_SECTION \ | |
957 | . = ALIGN(PAGE_SIZE); \ | |
958 | *(.data..percpu..decrypted) \ | |
959 | . = ALIGN(PAGE_SIZE); | |
960 | #else | |
961 | #define PERCPU_DECRYPTED_SECTION | |
962 | #endif | |
963 | ||
964 | ||
023bf6f1 TH |
965 | /* |
966 | * Default discarded sections. | |
967 | * | |
968 | * Some archs want to discard exit text/data at runtime rather than | |
969 | * link time due to cross-section references such as alt instructions, | |
970 | * bug table, eh_frame, etc. DISCARDS must be the last of output | |
971 | * section definitions so that such archs put those in earlier section | |
972 | * definitions. | |
973 | */ | |
84d5f77f L |
974 | #ifdef RUNTIME_DISCARD_EXIT |
975 | #define EXIT_DISCARDS | |
976 | #else | |
977 | #define EXIT_DISCARDS \ | |
978 | EXIT_TEXT \ | |
979 | EXIT_DATA | |
980 | #endif | |
981 | ||
d812db78 | 982 | /* |
f5b6a74d NC |
983 | * Clang's -fprofile-arcs, -fsanitize=kernel-address, and |
984 | * -fsanitize=thread produce unwanted sections (.eh_frame | |
985 | * and .init_array.*), but CONFIG_CONSTRUCTORS wants to | |
986 | * keep any .init_array.* sections. | |
2947a456 | 987 | * https://llvm.org/pr46478 |
d812db78 | 988 | */ |
68c76ad4 AB |
989 | #ifdef CONFIG_UNWIND_TABLES |
990 | #define DISCARD_EH_FRAME | |
991 | #else | |
992 | #define DISCARD_EH_FRAME *(.eh_frame) | |
993 | #endif | |
89245600 | 994 | #if defined(CONFIG_GCOV_KERNEL) || defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KCSAN) |
d812db78 KC |
995 | # ifdef CONFIG_CONSTRUCTORS |
996 | # define SANITIZER_DISCARDS \ | |
68c76ad4 | 997 | DISCARD_EH_FRAME |
d812db78 KC |
998 | # else |
999 | # define SANITIZER_DISCARDS \ | |
1000 | *(.init_array) *(.init_array.*) \ | |
68c76ad4 | 1001 | DISCARD_EH_FRAME |
d812db78 KC |
1002 | # endif |
1003 | #else | |
1004 | # define SANITIZER_DISCARDS | |
1005 | #endif | |
1006 | ||
03c2b85c | 1007 | #define COMMON_DISCARDS \ |
d812db78 | 1008 | SANITIZER_DISCARDS \ |
9440155c | 1009 | PATCHABLE_DISCARDS \ |
03c2b85c KC |
1010 | *(.discard) \ |
1011 | *(.discard.*) \ | |
ddb5cdba | 1012 | *(.export_symbol) \ |
dfbe6968 KC |
1013 | *(.modinfo) \ |
1014 | /* ld.bfd warns about .gnu.version* even when not emitted */ \ | |
1015 | *(.gnu.version*) \ | |
03c2b85c | 1016 | |
405d967d TH |
1017 | #define DISCARDS \ |
1018 | /DISCARD/ : { \ | |
84d5f77f | 1019 | EXIT_DISCARDS \ |
023bf6f1 | 1020 | EXIT_CALL \ |
03c2b85c | 1021 | COMMON_DISCARDS \ |
405d967d TH |
1022 | } |
1023 | ||
6ea0c34d MF |
1024 | /** |
1025 | * PERCPU_INPUT - the percpu input sections | |
1026 | * @cacheline: cacheline size | |
1027 | * | |
1028 | * The core percpu section names and core symbols which do not rely | |
1029 | * directly upon load addresses. | |
1030 | * | |
1031 | * @cacheline is used to align subsections to avoid false cacheline | |
1032 | * sharing between subsections for different purposes. | |
1033 | */ | |
1034 | #define PERCPU_INPUT(cacheline) \ | |
a6214385 | 1035 | __per_cpu_start = .; \ |
6ea0c34d MF |
1036 | *(.data..percpu..first) \ |
1037 | . = ALIGN(PAGE_SIZE); \ | |
1038 | *(.data..percpu..page_aligned) \ | |
1039 | . = ALIGN(cacheline); \ | |
330d2822 | 1040 | *(.data..percpu..read_mostly) \ |
6ea0c34d MF |
1041 | . = ALIGN(cacheline); \ |
1042 | *(.data..percpu) \ | |
1043 | *(.data..percpu..shared_aligned) \ | |
ac26963a | 1044 | PERCPU_DECRYPTED_SECTION \ |
a6214385 | 1045 | __per_cpu_end = .; |
6ea0c34d | 1046 | |
3e5d8f97 | 1047 | /** |
6b7c38d5 | 1048 | * PERCPU_VADDR - define output section for percpu area |
19df0c2f | 1049 | * @cacheline: cacheline size |
3e5d8f97 TH |
1050 | * @vaddr: explicit base address (optional) |
1051 | * @phdr: destination PHDR (optional) | |
1052 | * | |
19df0c2f TH |
1053 | * Macro which expands to output section for percpu area. |
1054 | * | |
1055 | * @cacheline is used to align subsections to avoid false cacheline | |
1056 | * sharing between subsections for different purposes. | |
1057 | * | |
1058 | * If @vaddr is not blank, it specifies explicit base address and all | |
1059 | * percpu symbols will be offset from the given address. If blank, | |
1060 | * @vaddr always equals @laddr + LOAD_OFFSET. | |
3e5d8f97 TH |
1061 | * |
1062 | * @phdr defines the output PHDR to use if not blank. Be warned that | |
1063 | * output PHDR is sticky. If @phdr is specified, the next output | |
1064 | * section in the linker script will go there too. @phdr should have | |
1065 | * a leading colon. | |
1066 | * | |
3ac6cffe TH |
1067 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
1068 | * If there is no need to put the percpu section at a predetermined | |
0415b00d | 1069 | * address, use PERCPU_SECTION. |
3e5d8f97 | 1070 | */ |
19df0c2f | 1071 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
a6214385 MY |
1072 | __per_cpu_load = .; \ |
1073 | .data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) { \ | |
6ea0c34d | 1074 | PERCPU_INPUT(cacheline) \ |
6b7c38d5 | 1075 | } phdr \ |
a6214385 | 1076 | . = __per_cpu_load + SIZEOF(.data..percpu); |
3e5d8f97 TH |
1077 | |
1078 | /** | |
0415b00d | 1079 | * PERCPU_SECTION - define output section for percpu area, simple version |
19df0c2f | 1080 | * @cacheline: cacheline size |
3e5d8f97 | 1081 | * |
0415b00d TH |
1082 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
1083 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and | |
3e5d8f97 | 1084 | * __per_cpu_start will be identical. |
3ac6cffe | 1085 | * |
0415b00d | 1086 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
19df0c2f TH |
1087 | * except that __per_cpu_load is defined as a relative symbol against |
1088 | * .data..percpu which is required for relocatable x86_32 configuration. | |
3e5d8f97 | 1089 | */ |
0415b00d TH |
1090 | #define PERCPU_SECTION(cacheline) \ |
1091 | . = ALIGN(PAGE_SIZE); \ | |
3d9a854c | 1092 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
a6214385 | 1093 | __per_cpu_load = .; \ |
6ea0c34d | 1094 | PERCPU_INPUT(cacheline) \ |
3ac6cffe | 1095 | } |
ef53dae8 SR |
1096 | |
1097 | ||
1098 | /* | |
1099 | * Definition of the high level *_SECTION macros | |
1100 | * They will fit only a subset of the architectures | |
1101 | */ | |
1102 | ||
1103 | ||
1104 | /* | |
1105 | * Writeable data. | |
1106 | * All sections are combined in a single .data section. | |
1107 | * The sections following CONSTRUCTORS are arranged so their | |
1108 | * typical alignment matches. | |
1109 | * A cacheline is typical/always less than a PAGE_SIZE so | |
1110 | * the sections that has this restriction (or similar) | |
1111 | * is located before the ones requiring PAGE_SIZE alignment. | |
1112 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which | |
25985edc | 1113 | * matches the requirement of PAGE_ALIGNED_DATA. |
ef53dae8 | 1114 | * |
7923f90f | 1115 | * use 0 as page_align if page_aligned data is not used */ |
c9174047 | 1116 | #define RW_DATA(cacheline, pagealigned, inittask) \ |
ef53dae8 SR |
1117 | . = ALIGN(PAGE_SIZE); \ |
1118 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ | |
39a449d9 | 1119 | INIT_TASK_DATA(inittask) \ |
1b208622 TA |
1120 | NOSAVE_DATA \ |
1121 | PAGE_ALIGNED_DATA(pagealigned) \ | |
ef53dae8 SR |
1122 | CACHELINE_ALIGNED_DATA(cacheline) \ |
1123 | READ_MOSTLY_DATA(cacheline) \ | |
1124 | DATA_DATA \ | |
1125 | CONSTRUCTORS \ | |
19d43626 | 1126 | } \ |
ee9f8fce | 1127 | BUG_TABLE \ |
ef53dae8 SR |
1128 | |
1129 | #define INIT_TEXT_SECTION(inittext_align) \ | |
1130 | . = ALIGN(inittext_align); \ | |
1131 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ | |
a6214385 | 1132 | _sinittext = .; \ |
ef53dae8 | 1133 | INIT_TEXT \ |
a6214385 | 1134 | _einittext = .; \ |
ef53dae8 SR |
1135 | } |
1136 | ||
1137 | #define INIT_DATA_SECTION(initsetup_align) \ | |
1138 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ | |
1139 | INIT_DATA \ | |
1140 | INIT_SETUP(initsetup_align) \ | |
1141 | INIT_CALLS \ | |
1142 | CON_INITCALL \ | |
ef53dae8 SR |
1143 | INIT_RAM_FS \ |
1144 | } | |
1145 | ||
04e448d9 TA |
1146 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
1147 | . = ALIGN(sbss_align); \ | |
a6214385 | 1148 | __bss_start = .; \ |
04e448d9 | 1149 | SBSS(sbss_align) \ |
ef53dae8 | 1150 | BSS(bss_align) \ |
04e448d9 | 1151 | . = ALIGN(stop_align); \ |
a6214385 | 1152 | __bss_stop = .; |