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 SR |
141 | #ifdef CONFIG_HOTPLUG_CPU |
142 | #define CPU_KEEP(sec) *(.cpu##sec) | |
143 | #define CPU_DISCARD(sec) | |
144 | #else | |
145 | #define CPU_KEEP(sec) | |
146 | #define CPU_DISCARD(sec) *(.cpu##sec) | |
147 | #endif | |
148 | ||
1a3fb6d4 | 149 | #if defined(CONFIG_MEMORY_HOTPLUG) |
eb8f6890 SR |
150 | #define MEM_KEEP(sec) *(.mem##sec) |
151 | #define MEM_DISCARD(sec) | |
152 | #else | |
153 | #define MEM_KEEP(sec) | |
154 | #define MEM_DISCARD(sec) *(.mem##sec) | |
155 | #endif | |
156 | ||
9440155c PZI |
157 | #ifndef CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE |
158 | #define KEEP_PATCHABLE KEEP(*(__patchable_function_entries)) | |
159 | #define PATCHABLE_DISCARDS | |
160 | #else | |
161 | #define KEEP_PATCHABLE | |
162 | #define PATCHABLE_DISCARDS *(__patchable_function_entries) | |
163 | #endif | |
164 | ||
883bbbff PZ |
165 | #ifndef CONFIG_ARCH_SUPPORTS_CFI_CLANG |
166 | /* | |
167 | * Simply points to ftrace_stub, but with the proper protocol. | |
168 | * Defined by the linker script in linux/vmlinux.lds.h | |
169 | */ | |
170 | #define FTRACE_STUB_HACK ftrace_stub_graph = ftrace_stub; | |
171 | #else | |
172 | #define FTRACE_STUB_HACK | |
173 | #endif | |
174 | ||
8da3821b | 175 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
a1326b17 MR |
176 | /* |
177 | * The ftrace call sites are logged to a section whose name depends on the | |
178 | * compiler option used. A given kernel image will only use one, AKA | |
179 | * FTRACE_CALLSITE_SECTION. We capture all of them here to avoid header | |
180 | * dependencies for FTRACE_CALLSITE_SECTION's definition. | |
95f1fa9e | 181 | * |
34cdd18b SRV |
182 | * ftrace_ops_list_func will be defined as arch_ftrace_ops_list_func |
183 | * as some archs will have a different prototype for that function | |
184 | * but ftrace_ops_list_func() will have a single prototype. | |
a1326b17 | 185 | */ |
4b3b4c5e | 186 | #define MCOUNT_REC() . = ALIGN(8); \ |
a6214385 | 187 | __start_mcount_loc = .; \ |
266ff2a8 | 188 | KEEP(*(__mcount_loc)) \ |
9440155c | 189 | KEEP_PATCHABLE \ |
b83b43ff | 190 | __stop_mcount_loc = .; \ |
883bbbff | 191 | FTRACE_STUB_HACK \ |
34cdd18b | 192 | ftrace_ops_list_func = arch_ftrace_ops_list_func; |
8da3821b | 193 | #else |
b83b43ff | 194 | # ifdef CONFIG_FUNCTION_TRACER |
883bbbff | 195 | # define MCOUNT_REC() FTRACE_STUB_HACK \ |
34cdd18b | 196 | ftrace_ops_list_func = arch_ftrace_ops_list_func; |
b83b43ff SRV |
197 | # else |
198 | # define MCOUNT_REC() | |
199 | # endif | |
8da3821b | 200 | #endif |
eb8f6890 | 201 | |
435d6b65 JC |
202 | #define BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_) \ |
203 | _BEGIN_##_label_ = .; \ | |
9b351be2 | 204 | KEEP(*(_sec_)) \ |
435d6b65 | 205 | _END_##_label_ = .; |
9b351be2 | 206 | |
435d6b65 JC |
207 | #define BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_) \ |
208 | _label_##_BEGIN_ = .; \ | |
9b351be2 | 209 | KEEP(*(_sec_)) \ |
435d6b65 | 210 | _label_##_END_ = .; |
9b351be2 JC |
211 | |
212 | #define BOUNDED_SECTION_BY(_sec_, _label_) \ | |
213 | BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop) | |
214 | ||
215 | #define BOUNDED_SECTION(_sec) BOUNDED_SECTION_BY(_sec, _sec) | |
216 | ||
1d926e25 JC |
217 | #define HEADERED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \ |
218 | _HDR_##_label_ = .; \ | |
219 | KEEP(*(.gnu.linkonce.##_sec_)) \ | |
220 | BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_) | |
221 | ||
222 | #define HEADERED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \ | |
223 | _label_##_HDR_ = .; \ | |
224 | KEEP(*(.gnu.linkonce.##_sec_)) \ | |
225 | BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_) | |
226 | ||
227 | #define HEADERED_SECTION_BY(_sec_, _label_) \ | |
228 | HEADERED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop) | |
229 | ||
230 | #define HEADERED_SECTION(_sec) HEADERED_SECTION_BY(_sec, _sec) | |
231 | ||
2ed84eeb | 232 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
9b351be2 JC |
233 | #define LIKELY_PROFILE() \ |
234 | BOUNDED_SECTION_BY(_ftrace_annotated_branch, _annotated_branch_profile) | |
1f0d69a9 SR |
235 | #else |
236 | #define LIKELY_PROFILE() | |
237 | #endif | |
238 | ||
2bcd521a | 239 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
9b351be2 JC |
240 | #define BRANCH_PROFILE() \ |
241 | BOUNDED_SECTION_BY(_ftrace_branch, _branch_profile) | |
2bcd521a SR |
242 | #else |
243 | #define BRANCH_PROFILE() | |
244 | #endif | |
245 | ||
376e2424 | 246 | #ifdef CONFIG_KPROBES |
9b351be2 JC |
247 | #define KPROBE_BLACKLIST() \ |
248 | . = ALIGN(8); \ | |
249 | BOUNDED_SECTION(_kprobe_blacklist) | |
376e2424 MH |
250 | #else |
251 | #define KPROBE_BLACKLIST() | |
252 | #endif | |
253 | ||
540adea3 | 254 | #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
9b351be2 JC |
255 | #define ERROR_INJECT_WHITELIST() \ |
256 | STRUCT_ALIGN(); \ | |
257 | BOUNDED_SECTION(_error_injection_whitelist) | |
92ace999 | 258 | #else |
540adea3 | 259 | #define ERROR_INJECT_WHITELIST() |
92ace999 JB |
260 | #endif |
261 | ||
5f77a88b | 262 | #ifdef CONFIG_EVENT_TRACING |
9b351be2 JC |
263 | #define FTRACE_EVENTS() \ |
264 | . = ALIGN(8); \ | |
265 | BOUNDED_SECTION(_ftrace_events) \ | |
266 | BOUNDED_SECTION_BY(_ftrace_eval_map, _ftrace_eval_maps) | |
b77e38aa SR |
267 | #else |
268 | #define FTRACE_EVENTS() | |
269 | #endif | |
270 | ||
1ba28e02 | 271 | #ifdef CONFIG_TRACING |
9b351be2 JC |
272 | #define TRACE_PRINTKS() BOUNDED_SECTION_BY(__trace_printk_fmt, ___trace_bprintk_fmt) |
273 | #define TRACEPOINT_STR() BOUNDED_SECTION_BY(__tracepoint_str, ___tracepoint_str) | |
1ba28e02 LJ |
274 | #else |
275 | #define TRACE_PRINTKS() | |
102c9323 | 276 | #define TRACEPOINT_STR() |
1ba28e02 LJ |
277 | #endif |
278 | ||
bed1ffca | 279 | #ifdef CONFIG_FTRACE_SYSCALLS |
9b351be2 JC |
280 | #define TRACE_SYSCALLS() \ |
281 | . = ALIGN(8); \ | |
282 | BOUNDED_SECTION_BY(__syscalls_metadata, _syscalls_metadata) | |
bed1ffca FW |
283 | #else |
284 | #define TRACE_SYSCALLS() | |
285 | #endif | |
286 | ||
c4f6699d | 287 | #ifdef CONFIG_BPF_EVENTS |
9b351be2 JC |
288 | #define BPF_RAW_TP() STRUCT_ALIGN(); \ |
289 | BOUNDED_SECTION_BY(__bpf_raw_tp_map, __bpf_raw_tp) | |
c4f6699d AS |
290 | #else |
291 | #define BPF_RAW_TP() | |
292 | #endif | |
293 | ||
470ca0de | 294 | #ifdef CONFIG_SERIAL_EARLYCON |
9b351be2 JC |
295 | #define EARLYCON_TABLE() \ |
296 | . = ALIGN(8); \ | |
297 | BOUNDED_SECTION_POST_LABEL(__earlycon_table, __earlycon_table, , _end) | |
470ca0de PH |
298 | #else |
299 | #define EARLYCON_TABLE() | |
300 | #endif | |
aab94339 | 301 | |
3ac946d1 | 302 | #ifdef CONFIG_SECURITY |
9b351be2 JC |
303 | #define LSM_TABLE() \ |
304 | . = ALIGN(8); \ | |
305 | BOUNDED_SECTION_PRE_LABEL(.lsm_info.init, _lsm_info, __start, __end) | |
306 | ||
307 | #define EARLY_LSM_TABLE() \ | |
308 | . = ALIGN(8); \ | |
309 | BOUNDED_SECTION_PRE_LABEL(.early_lsm_info.init, _early_lsm_info, __start, __end) | |
3ac946d1 KC |
310 | #else |
311 | #define LSM_TABLE() | |
e6b1db98 | 312 | #define EARLY_LSM_TABLE() |
3ac946d1 KC |
313 | #endif |
314 | ||
06309288 RH |
315 | #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
316 | #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) | |
5ee02af1 | 317 | #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
06309288 RH |
318 | #define _OF_TABLE_0(name) |
319 | #define _OF_TABLE_1(name) \ | |
f6e916b8 | 320 | . = ALIGN(8); \ |
a6214385 | 321 | __##name##_of_table = .; \ |
4b89b7f7 NP |
322 | KEEP(*(__##name##_of_table)) \ |
323 | KEEP(*(__##name##_of_table_end)) | |
06309288 | 324 | |
bb0eb050 | 325 | #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) |
06309288 RH |
326 | #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
327 | #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) | |
328 | #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) | |
329 | #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) | |
449e056c | 330 | #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
6c3ff8b1 | 331 | |
e647b532 MZ |
332 | #ifdef CONFIG_ACPI |
333 | #define ACPI_PROBE_TABLE(name) \ | |
334 | . = ALIGN(8); \ | |
9b351be2 JC |
335 | BOUNDED_SECTION_POST_LABEL(__##name##_acpi_probe_table, \ |
336 | __##name##_acpi_probe_table,, _end) | |
e647b532 MZ |
337 | #else |
338 | #define ACPI_PROBE_TABLE(name) | |
339 | #endif | |
340 | ||
980af75e DL |
341 | #ifdef CONFIG_THERMAL |
342 | #define THERMAL_TABLE(name) \ | |
343 | . = ALIGN(8); \ | |
9b351be2 JC |
344 | BOUNDED_SECTION_POST_LABEL(__##name##_thermal_table, \ |
345 | __##name##_thermal_table,, _end) | |
980af75e DL |
346 | #else |
347 | #define THERMAL_TABLE(name) | |
348 | #endif | |
349 | ||
aab94339 DB |
350 | #define KERNEL_DTB() \ |
351 | STRUCT_ALIGN(); \ | |
a6214385 | 352 | __dtb_start = .; \ |
4b89b7f7 | 353 | KEEP(*(.dtb.init.rodata)) \ |
a6214385 | 354 | __dtb_end = .; |
aab94339 | 355 | |
b67067f1 NP |
356 | /* |
357 | * .data section | |
b67067f1 | 358 | */ |
ca967258 | 359 | #define DATA_DATA \ |
129f6c48 | 360 | *(.xiptext) \ |
cb87481e | 361 | *(DATA_MAIN) \ |
000f8870 | 362 | *(.data..decrypted) \ |
312b1485 | 363 | *(.ref.data) \ |
d356c0b6 | 364 | *(.data..shared_aligned) /* percpu related */ \ |
266ff2a8 NP |
365 | MEM_KEEP(init.data*) \ |
366 | MEM_KEEP(exit.data*) \ | |
7ccaba53 | 367 | *(.data.unlikely) \ |
a6214385 | 368 | __start_once = .; \ |
b1fca27d | 369 | *(.data.once) \ |
a6214385 | 370 | __end_once = .; \ |
65498646 | 371 | STRUCT_ALIGN(); \ |
97e1c18e | 372 | *(__tracepoints) \ |
e9d376f0 JB |
373 | /* implement dynamic printk debug */ \ |
374 | . = ALIGN(8); \ | |
9b351be2 JC |
375 | BOUNDED_SECTION_BY(__dyndbg_classes, ___dyndbg_classes) \ |
376 | BOUNDED_SECTION_BY(__dyndbg, ___dyndbg) \ | |
2bcd521a | 377 | LIKELY_PROFILE() \ |
b77e38aa | 378 | BRANCH_PROFILE() \ |
102c9323 | 379 | TRACE_PRINTKS() \ |
c4f6699d | 380 | BPF_RAW_TP() \ |
102c9323 | 381 | TRACEPOINT_STR() |
ca967258 | 382 | |
ef53dae8 SR |
383 | /* |
384 | * Data section helpers | |
385 | */ | |
386 | #define NOSAVE_DATA \ | |
387 | . = ALIGN(PAGE_SIZE); \ | |
a6214385 | 388 | __nosave_begin = .; \ |
07b3bb1e | 389 | *(.data..nosave) \ |
ef53dae8 | 390 | . = ALIGN(PAGE_SIZE); \ |
a6214385 | 391 | __nosave_end = .; |
ef53dae8 SR |
392 | |
393 | #define PAGE_ALIGNED_DATA(page_align) \ | |
394 | . = ALIGN(page_align); \ | |
de2b41be JR |
395 | *(.data..page_aligned) \ |
396 | . = ALIGN(page_align); | |
ef53dae8 SR |
397 | |
398 | #define READ_MOSTLY_DATA(align) \ | |
399 | . = ALIGN(align); \ | |
8369744f SL |
400 | *(.data..read_mostly) \ |
401 | . = ALIGN(align); | |
ef53dae8 SR |
402 | |
403 | #define CACHELINE_ALIGNED_DATA(align) \ | |
404 | . = ALIGN(align); \ | |
4af57b78 | 405 | *(.data..cacheline_aligned) |
ef53dae8 | 406 | |
39a449d9 | 407 | #define INIT_TASK_DATA(align) \ |
ef53dae8 | 408 | . = ALIGN(align); \ |
a6214385 MY |
409 | __start_init_task = .; \ |
410 | init_thread_union = .; \ | |
411 | init_stack = .; \ | |
266ff2a8 NP |
412 | KEEP(*(.data..init_task)) \ |
413 | KEEP(*(.data..init_thread_info)) \ | |
a6214385 MY |
414 | . = __start_init_task + THREAD_SIZE; \ |
415 | __end_init_task = .; | |
ef53dae8 | 416 | |
e872267b AB |
417 | #define JUMP_TABLE_DATA \ |
418 | . = ALIGN(8); \ | |
9b351be2 | 419 | BOUNDED_SECTION_BY(__jump_table, ___jump_table) |
e872267b | 420 | |
b44544fe | 421 | #ifdef CONFIG_HAVE_STATIC_CALL_INLINE |
9183c3f9 JP |
422 | #define STATIC_CALL_DATA \ |
423 | . = ALIGN(8); \ | |
9b351be2 JC |
424 | BOUNDED_SECTION_BY(.static_call_sites, _static_call_sites) \ |
425 | BOUNDED_SECTION_BY(.static_call_tramp_key, _static_call_tramp_key) | |
b44544fe PZ |
426 | #else |
427 | #define STATIC_CALL_DATA | |
428 | #endif | |
9183c3f9 | 429 | |
32fb2fc5 HC |
430 | /* |
431 | * Allow architectures to handle ro_after_init data on their | |
432 | * own by defining an empty RO_AFTER_INIT_DATA. | |
433 | */ | |
434 | #ifndef RO_AFTER_INIT_DATA | |
d7c19b06 | 435 | #define RO_AFTER_INIT_DATA \ |
7f897acb | 436 | . = ALIGN(8); \ |
a6214385 | 437 | __start_ro_after_init = .; \ |
d7c19b06 | 438 | *(.data..ro_after_init) \ |
e872267b | 439 | JUMP_TABLE_DATA \ |
9183c3f9 | 440 | STATIC_CALL_DATA \ |
a6214385 | 441 | __end_ro_after_init = .; |
32fb2fc5 HC |
442 | #endif |
443 | ||
89245600 ST |
444 | /* |
445 | * .kcfi_traps contains a list KCFI trap locations. | |
446 | */ | |
447 | #ifndef KCFI_TRAPS | |
448 | #ifdef CONFIG_ARCH_USES_CFI_TRAPS | |
449 | #define KCFI_TRAPS \ | |
450 | __kcfi_traps : AT(ADDR(__kcfi_traps) - LOAD_OFFSET) { \ | |
9b351be2 | 451 | BOUNDED_SECTION_BY(.kcfi_traps, ___kcfi_traps) \ |
89245600 ST |
452 | } |
453 | #else | |
454 | #define KCFI_TRAPS | |
455 | #endif | |
456 | #endif | |
457 | ||
ef53dae8 SR |
458 | /* |
459 | * Read only Data | |
460 | */ | |
93240b32 | 461 | #define RO_DATA(align) \ |
4096b46f | 462 | . = ALIGN((align)); \ |
1da177e4 | 463 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
a6214385 | 464 | __start_rodata = .; \ |
1da177e4 | 465 | *(.rodata) *(.rodata.*) \ |
590d6979 | 466 | SCHED_DATA \ |
32fb2fc5 | 467 | RO_AFTER_INIT_DATA /* Read only after init */ \ |
65498646 | 468 | . = ALIGN(8); \ |
9b351be2 | 469 | BOUNDED_SECTION_BY(__tracepoints_ptrs, ___tracepoints_ptrs) \ |
97e1c18e | 470 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
1da177e4 LT |
471 | } \ |
472 | \ | |
473 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ | |
474 | *(.rodata1) \ | |
475 | } \ | |
476 | \ | |
477 | /* PCI quirks */ \ | |
478 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ | |
9b351be2 JC |
479 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_early, _pci_fixups_early, __start, __end) \ |
480 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_header, _pci_fixups_header, __start, __end) \ | |
481 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_final, _pci_fixups_final, __start, __end) \ | |
482 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_enable, _pci_fixups_enable, __start, __end) \ | |
483 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume, _pci_fixups_resume, __start, __end) \ | |
484 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend, _pci_fixups_suspend, __start, __end) \ | |
485 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume_early, _pci_fixups_resume_early, __start, __end) \ | |
486 | BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend_late, _pci_fixups_suspend_late, __start, __end) \ | |
1da177e4 LT |
487 | } \ |
488 | \ | |
771856ca | 489 | FW_LOADER_BUILT_IN_DATA \ |
63687a52 JB |
490 | TRACEDATA \ |
491 | \ | |
33701557 CD |
492 | PRINTK_INDEX \ |
493 | \ | |
1da177e4 LT |
494 | /* Kernel symbol table: Normal symbols */ \ |
495 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ | |
a6214385 | 496 | __start___ksymtab = .; \ |
b67067f1 | 497 | KEEP(*(SORT(___ksymtab+*))) \ |
a6214385 | 498 | __stop___ksymtab = .; \ |
1da177e4 LT |
499 | } \ |
500 | \ | |
501 | /* Kernel symbol table: GPL-only symbols */ \ | |
502 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 503 | __start___ksymtab_gpl = .; \ |
b67067f1 | 504 | KEEP(*(SORT(___ksymtab_gpl+*))) \ |
a6214385 | 505 | __stop___ksymtab_gpl = .; \ |
1da177e4 LT |
506 | } \ |
507 | \ | |
508 | /* Kernel symbol table: Normal symbols */ \ | |
509 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ | |
a6214385 | 510 | __start___kcrctab = .; \ |
b67067f1 | 511 | KEEP(*(SORT(___kcrctab+*))) \ |
a6214385 | 512 | __stop___kcrctab = .; \ |
1da177e4 LT |
513 | } \ |
514 | \ | |
515 | /* Kernel symbol table: GPL-only symbols */ \ | |
516 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 517 | __start___kcrctab_gpl = .; \ |
b67067f1 | 518 | KEEP(*(SORT(___kcrctab_gpl+*))) \ |
a6214385 | 519 | __stop___kcrctab_gpl = .; \ |
1da177e4 LT |
520 | } \ |
521 | \ | |
522 | /* Kernel symbol table: strings */ \ | |
523 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ | |
4b89b7f7 | 524 | *(__ksymtab_strings) \ |
1da177e4 LT |
525 | } \ |
526 | \ | |
eb8f6890 SR |
527 | /* __*init sections */ \ |
528 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ | |
312b1485 | 529 | *(.ref.rodata) \ |
eb8f6890 SR |
530 | MEM_KEEP(init.rodata) \ |
531 | MEM_KEEP(exit.rodata) \ | |
532 | } \ | |
533 | \ | |
1da177e4 LT |
534 | /* Built-in module parameters. */ \ |
535 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ | |
9b351be2 | 536 | BOUNDED_SECTION_BY(__param, ___param) \ |
e94965ed DT |
537 | } \ |
538 | \ | |
539 | /* Built-in module versions. */ \ | |
540 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ | |
9b351be2 | 541 | BOUNDED_SECTION_BY(__modver, ___modver) \ |
7583ddfd | 542 | } \ |
eaf93707 | 543 | \ |
89245600 ST |
544 | KCFI_TRAPS \ |
545 | \ | |
b8c2f776 | 546 | RO_EXCEPTION_TABLE \ |
eaf93707 | 547 | NOTES \ |
90ceddcb | 548 | BTF \ |
eaf93707 KC |
549 | \ |
550 | . = ALIGN((align)); \ | |
551 | __end_rodata = .; | |
1da177e4 | 552 | |
cf68fffb | 553 | |
65538966 TG |
554 | /* |
555 | * Non-instrumentable text section | |
556 | */ | |
557 | #define NOINSTR_TEXT \ | |
558 | ALIGN_FUNCTION(); \ | |
559 | __noinstr_text_start = .; \ | |
560 | *(.noinstr.text) \ | |
2b5a0e42 PZ |
561 | __cpuidle_text_start = .; \ |
562 | *(.cpuidle.text) \ | |
563 | __cpuidle_text_end = .; \ | |
65538966 TG |
564 | __noinstr_text_end = .; |
565 | ||
cb87481e NP |
566 | /* |
567 | * .text section. Map to function alignment to avoid address changes | |
0f4c4af0 | 568 | * during second ld run in second ld pass when generating System.map |
cb87481e NP |
569 | * |
570 | * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead | |
571 | * code elimination is enabled, so these sections should be converted | |
572 | * to use ".." first. | |
573 | */ | |
7664709b SR |
574 | #define TEXT_TEXT \ |
575 | ALIGN_FUNCTION(); \ | |
eff8728f ND |
576 | *(.text.hot .text.hot.*) \ |
577 | *(TEXT_MAIN .text.fixup) \ | |
578 | *(.text.unlikely .text.unlikely.*) \ | |
579 | *(.text.unknown .text.unknown.*) \ | |
65538966 | 580 | NOINSTR_TEXT \ |
564c9cc8 | 581 | *(.text..refcount) \ |
312b1485 | 582 | *(.ref.text) \ |
84837881 | 583 | *(.text.asan.* .text.tsan.*) \ |
266ff2a8 NP |
584 | MEM_KEEP(init.text*) \ |
585 | MEM_KEEP(exit.text*) \ | |
eb8f6890 | 586 | |
7664709b | 587 | |
6d30e3a8 SR |
588 | /* sched.text is aling to function alignment to secure we have same |
589 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 590 | #define SCHED_TEXT \ |
6d30e3a8 | 591 | ALIGN_FUNCTION(); \ |
a6214385 | 592 | __sched_text_start = .; \ |
1da177e4 | 593 | *(.sched.text) \ |
a6214385 | 594 | __sched_text_end = .; |
1da177e4 | 595 | |
6d30e3a8 SR |
596 | /* spinlock.text is aling to function alignment to secure we have same |
597 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 598 | #define LOCK_TEXT \ |
6d30e3a8 | 599 | ALIGN_FUNCTION(); \ |
a6214385 | 600 | __lock_text_start = .; \ |
1da177e4 | 601 | *(.spinlock.text) \ |
a6214385 | 602 | __lock_text_end = .; |
d0aaff97 PP |
603 | |
604 | #define KPROBES_TEXT \ | |
605 | ALIGN_FUNCTION(); \ | |
a6214385 | 606 | __kprobes_text_start = .; \ |
d0aaff97 | 607 | *(.kprobes.text) \ |
a6214385 | 608 | __kprobes_text_end = .; |
a7d0c210 | 609 | |
ea714547 JO |
610 | #define ENTRY_TEXT \ |
611 | ALIGN_FUNCTION(); \ | |
a6214385 | 612 | __entry_text_start = .; \ |
ea714547 | 613 | *(.entry.text) \ |
a6214385 | 614 | __entry_text_end = .; |
ea714547 | 615 | |
a0343e82 FW |
616 | #define IRQENTRY_TEXT \ |
617 | ALIGN_FUNCTION(); \ | |
a6214385 | 618 | __irqentry_text_start = .; \ |
a0343e82 | 619 | *(.irqentry.text) \ |
a6214385 | 620 | __irqentry_text_end = .; |
a0343e82 | 621 | |
be7635e7 AP |
622 | #define SOFTIRQENTRY_TEXT \ |
623 | ALIGN_FUNCTION(); \ | |
a6214385 | 624 | __softirqentry_text_start = .; \ |
be7635e7 | 625 | *(.softirqentry.text) \ |
a6214385 | 626 | __softirqentry_text_end = .; |
be7635e7 | 627 | |
1e7e4788 JP |
628 | #define STATIC_CALL_TEXT \ |
629 | ALIGN_FUNCTION(); \ | |
630 | __static_call_text_start = .; \ | |
631 | *(.static_call.text) \ | |
632 | __static_call_text_end = .; | |
633 | ||
37c514e3 | 634 | /* Section used for early init (in .S files) */ |
266ff2a8 | 635 | #define HEAD_TEXT KEEP(*(.head.text)) |
37c514e3 | 636 | |
7923f90f | 637 | #define HEAD_TEXT_SECTION \ |
ef53dae8 SR |
638 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
639 | HEAD_TEXT \ | |
640 | } | |
641 | ||
642 | /* | |
643 | * Exception table | |
644 | */ | |
645 | #define EXCEPTION_TABLE(align) \ | |
646 | . = ALIGN(align); \ | |
647 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ | |
9b351be2 | 648 | BOUNDED_SECTION_BY(__ex_table, ___ex_table) \ |
ef53dae8 SR |
649 | } |
650 | ||
90ceddcb FS |
651 | /* |
652 | * .BTF | |
653 | */ | |
654 | #ifdef CONFIG_DEBUG_INFO_BTF | |
655 | #define BTF \ | |
656 | .BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { \ | |
9b351be2 | 657 | BOUNDED_SECTION_BY(.BTF, _BTF) \ |
5a2798ab JO |
658 | } \ |
659 | . = ALIGN(4); \ | |
660 | .BTF_ids : AT(ADDR(.BTF_ids) - LOAD_OFFSET) { \ | |
661 | *(.BTF_ids) \ | |
90ceddcb FS |
662 | } |
663 | #else | |
664 | #define BTF | |
665 | #endif | |
666 | ||
ef53dae8 SR |
667 | /* |
668 | * Init task | |
669 | */ | |
39a449d9 | 670 | #define INIT_TASK_DATA_SECTION(align) \ |
ef53dae8 | 671 | . = ALIGN(align); \ |
da5e37ef | 672 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
39a449d9 | 673 | INIT_TASK_DATA(align) \ |
ef53dae8 | 674 | } |
37c514e3 | 675 | |
b99b87f7 | 676 | #ifdef CONFIG_CONSTRUCTORS |
2a2325e6 | 677 | #define KERNEL_CTORS() . = ALIGN(8); \ |
a6214385 | 678 | __ctors_start = .; \ |
3e663148 | 679 | KEEP(*(SORT(.ctors.*))) \ |
4b89b7f7 NP |
680 | KEEP(*(.ctors)) \ |
681 | KEEP(*(SORT(.init_array.*))) \ | |
682 | KEEP(*(.init_array)) \ | |
a6214385 | 683 | __ctors_end = .; |
b99b87f7 PO |
684 | #else |
685 | #define KERNEL_CTORS() | |
686 | #endif | |
687 | ||
01ba2bdc | 688 | /* init and exit section handling */ |
eb8f6890 | 689 | #define INIT_DATA \ |
b67067f1 | 690 | KEEP(*(SORT(___kentry+*))) \ |
266ff2a8 NP |
691 | *(.init.data init.data.*) \ |
692 | MEM_DISCARD(init.data*) \ | |
b99b87f7 | 693 | KERNEL_CTORS() \ |
4b3b4c5e | 694 | MCOUNT_REC() \ |
266ff2a8 | 695 | *(.init.rodata .init.rodata.*) \ |
e4a9ea5e | 696 | FTRACE_EVENTS() \ |
3d56e331 | 697 | TRACE_SYSCALLS() \ |
376e2424 | 698 | KPROBE_BLACKLIST() \ |
540adea3 | 699 | ERROR_INJECT_WHITELIST() \ |
aab94339 | 700 | MEM_DISCARD(init.rodata) \ |
f2f6c255 | 701 | CLK_OF_TABLES() \ |
f618c470 | 702 | RESERVEDMEM_OF_TABLES() \ |
2fcc112a | 703 | TIMER_OF_TABLES() \ |
6c3ff8b1 | 704 | CPU_METHOD_OF_TABLES() \ |
449e056c | 705 | CPUIDLE_METHOD_OF_TABLES() \ |
f6e916b8 | 706 | KERNEL_DTB() \ |
b0b6abd3 | 707 | IRQCHIP_OF_MATCH_TABLE() \ |
46e589a3 | 708 | ACPI_PROBE_TABLE(irqchip) \ |
2fcc112a | 709 | ACPI_PROBE_TABLE(timer) \ |
980af75e | 710 | THERMAL_TABLE(governor) \ |
3ac946d1 | 711 | EARLYCON_TABLE() \ |
e6b1db98 | 712 | LSM_TABLE() \ |
90a025a8 BH |
713 | EARLY_LSM_TABLE() \ |
714 | KUNIT_TABLE() | |
eb8f6890 SR |
715 | |
716 | #define INIT_TEXT \ | |
266ff2a8 | 717 | *(.init.text .init.text.*) \ |
e41f501d | 718 | *(.text.startup) \ |
266ff2a8 | 719 | MEM_DISCARD(init.text*) |
eb8f6890 SR |
720 | |
721 | #define EXIT_DATA \ | |
266ff2a8 | 722 | *(.exit.data .exit.data.*) \ |
8dcf86ca PO |
723 | *(.fini_array .fini_array.*) \ |
724 | *(.dtors .dtors.*) \ | |
266ff2a8 NP |
725 | MEM_DISCARD(exit.data*) \ |
726 | MEM_DISCARD(exit.rodata*) | |
01ba2bdc | 727 | |
eb8f6890 SR |
728 | #define EXIT_TEXT \ |
729 | *(.exit.text) \ | |
e41f501d | 730 | *(.text.exit) \ |
eb8f6890 | 731 | MEM_DISCARD(exit.text) |
01ba2bdc | 732 | |
7923f90f SR |
733 | #define EXIT_CALL \ |
734 | *(.exitcall.exit) | |
735 | ||
ef53dae8 SR |
736 | /* |
737 | * bss (Block Started by Symbol) - uninitialized data | |
738 | * zeroed during startup | |
739 | */ | |
04e448d9 TA |
740 | #define SBSS(sbss_align) \ |
741 | . = ALIGN(sbss_align); \ | |
ef53dae8 | 742 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
83a092cf | 743 | *(.dynsbss) \ |
266ff2a8 | 744 | *(SBSS_MAIN) \ |
ef53dae8 SR |
745 | *(.scommon) \ |
746 | } | |
747 | ||
c87728ca DD |
748 | /* |
749 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra | |
750 | * sections to the front of bss. | |
751 | */ | |
752 | #ifndef BSS_FIRST_SECTIONS | |
753 | #define BSS_FIRST_SECTIONS | |
754 | #endif | |
755 | ||
ef53dae8 SR |
756 | #define BSS(bss_align) \ |
757 | . = ALIGN(bss_align); \ | |
758 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ | |
c87728ca | 759 | BSS_FIRST_SECTIONS \ |
de2b41be | 760 | . = ALIGN(PAGE_SIZE); \ |
7c74df07 | 761 | *(.bss..page_aligned) \ |
de2b41be | 762 | . = ALIGN(PAGE_SIZE); \ |
ef53dae8 | 763 | *(.dynbss) \ |
cb87481e | 764 | *(BSS_MAIN) \ |
ef53dae8 | 765 | *(COMMON) \ |
ef53dae8 SR |
766 | } |
767 | ||
768 | /* | |
769 | * DWARF debug sections. | |
770 | * Symbols in the DWARF debugging sections are relative to | |
771 | * the beginning of the section so we begin them at 0. | |
772 | */ | |
a7d0c210 PBG |
773 | #define DWARF_DEBUG \ |
774 | /* DWARF 1 */ \ | |
775 | .debug 0 : { *(.debug) } \ | |
776 | .line 0 : { *(.line) } \ | |
777 | /* GNU DWARF 1 extensions */ \ | |
778 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ | |
779 | .debug_sfnames 0 : { *(.debug_sfnames) } \ | |
780 | /* DWARF 1.1 and DWARF 2 */ \ | |
781 | .debug_aranges 0 : { *(.debug_aranges) } \ | |
782 | .debug_pubnames 0 : { *(.debug_pubnames) } \ | |
783 | /* DWARF 2 */ \ | |
784 | .debug_info 0 : { *(.debug_info \ | |
785 | .gnu.linkonce.wi.*) } \ | |
786 | .debug_abbrev 0 : { *(.debug_abbrev) } \ | |
787 | .debug_line 0 : { *(.debug_line) } \ | |
788 | .debug_frame 0 : { *(.debug_frame) } \ | |
789 | .debug_str 0 : { *(.debug_str) } \ | |
790 | .debug_loc 0 : { *(.debug_loc) } \ | |
791 | .debug_macinfo 0 : { *(.debug_macinfo) } \ | |
83a092cf NP |
792 | .debug_pubtypes 0 : { *(.debug_pubtypes) } \ |
793 | /* DWARF 3 */ \ | |
794 | .debug_ranges 0 : { *(.debug_ranges) } \ | |
a7d0c210 PBG |
795 | /* SGI/MIPS DWARF 2 extensions */ \ |
796 | .debug_weaknames 0 : { *(.debug_weaknames) } \ | |
797 | .debug_funcnames 0 : { *(.debug_funcnames) } \ | |
798 | .debug_typenames 0 : { *(.debug_typenames) } \ | |
799 | .debug_varnames 0 : { *(.debug_varnames) } \ | |
83a092cf NP |
800 | /* GNU DWARF 2 extensions */ \ |
801 | .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \ | |
802 | .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \ | |
803 | /* DWARF 4 */ \ | |
804 | .debug_types 0 : { *(.debug_types) } \ | |
805 | /* DWARF 5 */ \ | |
3c4fa46b ND |
806 | .debug_addr 0 : { *(.debug_addr) } \ |
807 | .debug_line_str 0 : { *(.debug_line_str) } \ | |
808 | .debug_loclists 0 : { *(.debug_loclists) } \ | |
83a092cf | 809 | .debug_macro 0 : { *(.debug_macro) } \ |
3c4fa46b ND |
810 | .debug_names 0 : { *(.debug_names) } \ |
811 | .debug_rnglists 0 : { *(.debug_rnglists) } \ | |
812 | .debug_str_offsets 0 : { *(.debug_str_offsets) } | |
a7d0c210 | 813 | |
c604abc3 | 814 | /* Stabs debugging sections. */ |
a7d0c210 PBG |
815 | #define STABS_DEBUG \ |
816 | .stab 0 : { *(.stab) } \ | |
817 | .stabstr 0 : { *(.stabstr) } \ | |
818 | .stab.excl 0 : { *(.stab.excl) } \ | |
819 | .stab.exclstr 0 : { *(.stab.exclstr) } \ | |
820 | .stab.index 0 : { *(.stab.index) } \ | |
c604abc3 KC |
821 | .stab.indexstr 0 : { *(.stab.indexstr) } |
822 | ||
823 | /* Required sections not related to debugging. */ | |
824 | #define ELF_DETAILS \ | |
a840c4de KC |
825 | .comment 0 : { *(.comment) } \ |
826 | .symtab 0 : { *(.symtab) } \ | |
827 | .strtab 0 : { *(.strtab) } \ | |
828 | .shstrtab 0 : { *(.shstrtab) } | |
9c9b8b38 | 829 | |
6360b1fb | 830 | #ifdef CONFIG_GENERIC_BUG |
7664c5a1 JF |
831 | #define BUG_TABLE \ |
832 | . = ALIGN(8); \ | |
833 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ | |
9b351be2 | 834 | BOUNDED_SECTION_BY(__bug_table, ___bug_table) \ |
7664c5a1 | 835 | } |
6360b1fb JB |
836 | #else |
837 | #define BUG_TABLE | |
838 | #endif | |
7664c5a1 | 839 | |
11af8474 | 840 | #ifdef CONFIG_UNWINDER_ORC |
ee9f8fce JP |
841 | #define ORC_UNWIND_TABLE \ |
842 | . = ALIGN(4); \ | |
843 | .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \ | |
9b351be2 | 844 | BOUNDED_SECTION_BY(.orc_unwind_ip, _orc_unwind_ip) \ |
ee9f8fce | 845 | } \ |
f76a16ad | 846 | . = ALIGN(2); \ |
ee9f8fce | 847 | .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ |
9b351be2 | 848 | BOUNDED_SECTION_BY(.orc_unwind, _orc_unwind) \ |
ee9f8fce | 849 | } \ |
ca136cac | 850 | text_size = _etext - _stext; \ |
ee9f8fce JP |
851 | . = ALIGN(4); \ |
852 | .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \ | |
a6214385 | 853 | orc_lookup = .; \ |
ca136cac | 854 | . += (((text_size + LOOKUP_BLOCK_SIZE - 1) / \ |
ee9f8fce | 855 | LOOKUP_BLOCK_SIZE) + 1) * 4; \ |
a6214385 | 856 | orc_lookup_end = .; \ |
ee9f8fce JP |
857 | } |
858 | #else | |
859 | #define ORC_UNWIND_TABLE | |
860 | #endif | |
861 | ||
771856ca LC |
862 | /* Built-in firmware blobs */ |
863 | #ifdef CONFIG_FW_LOADER | |
864 | #define FW_LOADER_BUILT_IN_DATA \ | |
865 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) { \ | |
9b351be2 | 866 | BOUNDED_SECTION_PRE_LABEL(.builtin_fw, _builtin_fw, __start, __end) \ |
771856ca LC |
867 | } |
868 | #else | |
869 | #define FW_LOADER_BUILT_IN_DATA | |
870 | #endif | |
871 | ||
63687a52 JB |
872 | #ifdef CONFIG_PM_TRACE |
873 | #define TRACEDATA \ | |
874 | . = ALIGN(4); \ | |
875 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ | |
9b351be2 | 876 | BOUNDED_SECTION_POST_LABEL(.tracedata, __tracedata, _start, _end) \ |
63687a52 JB |
877 | } |
878 | #else | |
879 | #define TRACEDATA | |
880 | #endif | |
881 | ||
33701557 CD |
882 | #ifdef CONFIG_PRINTK_INDEX |
883 | #define PRINTK_INDEX \ | |
884 | .printk_index : AT(ADDR(.printk_index) - LOAD_OFFSET) { \ | |
9b351be2 | 885 | BOUNDED_SECTION_BY(.printk_index, _printk_index) \ |
33701557 CD |
886 | } |
887 | #else | |
888 | #define PRINTK_INDEX | |
889 | #endif | |
890 | ||
99cb0d91 MY |
891 | /* |
892 | * Discard .note.GNU-stack, which is emitted as PROGBITS by the compiler. | |
893 | * Otherwise, the type of .notes section would become PROGBITS instead of NOTES. | |
894 | */ | |
9c9b8b38 | 895 | #define NOTES \ |
99cb0d91 | 896 | /DISCARD/ : { *(.note.GNU-stack) } \ |
cbe87121 | 897 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
9b351be2 | 898 | BOUNDED_SECTION_BY(.note.*, _notes) \ |
fbe6a8e6 KC |
899 | } NOTES_HEADERS \ |
900 | NOTES_HEADERS_RESTORE | |
61ce1efe | 901 | |
ef53dae8 SR |
902 | #define INIT_SETUP(initsetup_align) \ |
903 | . = ALIGN(initsetup_align); \ | |
9b351be2 | 904 | BOUNDED_SECTION_POST_LABEL(.init.setup, __setup, _start, _end) |
ef53dae8 | 905 | |
026cee00 | 906 | #define INIT_CALLS_LEVEL(level) \ |
a6214385 | 907 | __initcall##level##_start = .; \ |
b67067f1 NP |
908 | KEEP(*(.initcall##level##.init)) \ |
909 | KEEP(*(.initcall##level##s.init)) \ | |
61ce1efe | 910 | |
ef53dae8 | 911 | #define INIT_CALLS \ |
a6214385 | 912 | __initcall_start = .; \ |
b67067f1 | 913 | KEEP(*(.initcallearly.init)) \ |
026cee00 PM |
914 | INIT_CALLS_LEVEL(0) \ |
915 | INIT_CALLS_LEVEL(1) \ | |
916 | INIT_CALLS_LEVEL(2) \ | |
917 | INIT_CALLS_LEVEL(3) \ | |
918 | INIT_CALLS_LEVEL(4) \ | |
919 | INIT_CALLS_LEVEL(5) \ | |
920 | INIT_CALLS_LEVEL(rootfs) \ | |
921 | INIT_CALLS_LEVEL(6) \ | |
922 | INIT_CALLS_LEVEL(7) \ | |
a6214385 | 923 | __initcall_end = .; |
ef53dae8 SR |
924 | |
925 | #define CON_INITCALL \ | |
9b351be2 | 926 | BOUNDED_SECTION_POST_LABEL(.con_initcall.init, __con_initcall, _start, _end) |
ef53dae8 | 927 | |
90a025a8 BH |
928 | /* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */ |
929 | #define KUNIT_TABLE() \ | |
930 | . = ALIGN(8); \ | |
9b351be2 | 931 | BOUNDED_SECTION_POST_LABEL(.kunit_test_suites, __kunit_suites, _start, _end) |
90a025a8 | 932 | |
ef53dae8 SR |
933 | #ifdef CONFIG_BLK_DEV_INITRD |
934 | #define INIT_RAM_FS \ | |
d8826262 | 935 | . = ALIGN(4); \ |
a6214385 | 936 | __initramfs_start = .; \ |
b67067f1 | 937 | KEEP(*(.init.ramfs)) \ |
ffe8018c | 938 | . = ALIGN(8); \ |
b67067f1 | 939 | KEEP(*(.init.ramfs.info)) |
ef53dae8 | 940 | #else |
eadfe219 | 941 | #define INIT_RAM_FS |
ef53dae8 SR |
942 | #endif |
943 | ||
ac26963a BS |
944 | /* |
945 | * Memory encryption operates on a page basis. Since we need to clear | |
946 | * the memory encryption mask for this section, it needs to be aligned | |
947 | * on a page boundary and be a page-size multiple in length. | |
948 | * | |
949 | * Note: We use a separate section so that only this section gets | |
950 | * decrypted to avoid exposing more than we wish. | |
951 | */ | |
952 | #ifdef CONFIG_AMD_MEM_ENCRYPT | |
953 | #define PERCPU_DECRYPTED_SECTION \ | |
954 | . = ALIGN(PAGE_SIZE); \ | |
955 | *(.data..percpu..decrypted) \ | |
956 | . = ALIGN(PAGE_SIZE); | |
957 | #else | |
958 | #define PERCPU_DECRYPTED_SECTION | |
959 | #endif | |
960 | ||
961 | ||
023bf6f1 TH |
962 | /* |
963 | * Default discarded sections. | |
964 | * | |
965 | * Some archs want to discard exit text/data at runtime rather than | |
966 | * link time due to cross-section references such as alt instructions, | |
967 | * bug table, eh_frame, etc. DISCARDS must be the last of output | |
968 | * section definitions so that such archs put those in earlier section | |
969 | * definitions. | |
970 | */ | |
84d5f77f L |
971 | #ifdef RUNTIME_DISCARD_EXIT |
972 | #define EXIT_DISCARDS | |
973 | #else | |
974 | #define EXIT_DISCARDS \ | |
975 | EXIT_TEXT \ | |
976 | EXIT_DATA | |
977 | #endif | |
978 | ||
d812db78 | 979 | /* |
f5b6a74d NC |
980 | * Clang's -fprofile-arcs, -fsanitize=kernel-address, and |
981 | * -fsanitize=thread produce unwanted sections (.eh_frame | |
982 | * and .init_array.*), but CONFIG_CONSTRUCTORS wants to | |
983 | * keep any .init_array.* sections. | |
d812db78 KC |
984 | * https://bugs.llvm.org/show_bug.cgi?id=46478 |
985 | */ | |
68c76ad4 AB |
986 | #ifdef CONFIG_UNWIND_TABLES |
987 | #define DISCARD_EH_FRAME | |
988 | #else | |
989 | #define DISCARD_EH_FRAME *(.eh_frame) | |
990 | #endif | |
89245600 | 991 | #if defined(CONFIG_GCOV_KERNEL) || defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KCSAN) |
d812db78 KC |
992 | # ifdef CONFIG_CONSTRUCTORS |
993 | # define SANITIZER_DISCARDS \ | |
68c76ad4 | 994 | DISCARD_EH_FRAME |
d812db78 KC |
995 | # else |
996 | # define SANITIZER_DISCARDS \ | |
997 | *(.init_array) *(.init_array.*) \ | |
68c76ad4 | 998 | DISCARD_EH_FRAME |
d812db78 KC |
999 | # endif |
1000 | #else | |
1001 | # define SANITIZER_DISCARDS | |
1002 | #endif | |
1003 | ||
03c2b85c | 1004 | #define COMMON_DISCARDS \ |
d812db78 | 1005 | SANITIZER_DISCARDS \ |
9440155c | 1006 | PATCHABLE_DISCARDS \ |
03c2b85c KC |
1007 | *(.discard) \ |
1008 | *(.discard.*) \ | |
dfbe6968 KC |
1009 | *(.modinfo) \ |
1010 | /* ld.bfd warns about .gnu.version* even when not emitted */ \ | |
1011 | *(.gnu.version*) \ | |
03c2b85c | 1012 | |
405d967d TH |
1013 | #define DISCARDS \ |
1014 | /DISCARD/ : { \ | |
84d5f77f | 1015 | EXIT_DISCARDS \ |
023bf6f1 | 1016 | EXIT_CALL \ |
03c2b85c | 1017 | COMMON_DISCARDS \ |
405d967d TH |
1018 | } |
1019 | ||
6ea0c34d MF |
1020 | /** |
1021 | * PERCPU_INPUT - the percpu input sections | |
1022 | * @cacheline: cacheline size | |
1023 | * | |
1024 | * The core percpu section names and core symbols which do not rely | |
1025 | * directly upon load addresses. | |
1026 | * | |
1027 | * @cacheline is used to align subsections to avoid false cacheline | |
1028 | * sharing between subsections for different purposes. | |
1029 | */ | |
1030 | #define PERCPU_INPUT(cacheline) \ | |
a6214385 | 1031 | __per_cpu_start = .; \ |
6ea0c34d MF |
1032 | *(.data..percpu..first) \ |
1033 | . = ALIGN(PAGE_SIZE); \ | |
1034 | *(.data..percpu..page_aligned) \ | |
1035 | . = ALIGN(cacheline); \ | |
330d2822 | 1036 | *(.data..percpu..read_mostly) \ |
6ea0c34d MF |
1037 | . = ALIGN(cacheline); \ |
1038 | *(.data..percpu) \ | |
1039 | *(.data..percpu..shared_aligned) \ | |
ac26963a | 1040 | PERCPU_DECRYPTED_SECTION \ |
a6214385 | 1041 | __per_cpu_end = .; |
6ea0c34d | 1042 | |
3e5d8f97 | 1043 | /** |
6b7c38d5 | 1044 | * PERCPU_VADDR - define output section for percpu area |
19df0c2f | 1045 | * @cacheline: cacheline size |
3e5d8f97 TH |
1046 | * @vaddr: explicit base address (optional) |
1047 | * @phdr: destination PHDR (optional) | |
1048 | * | |
19df0c2f TH |
1049 | * Macro which expands to output section for percpu area. |
1050 | * | |
1051 | * @cacheline is used to align subsections to avoid false cacheline | |
1052 | * sharing between subsections for different purposes. | |
1053 | * | |
1054 | * If @vaddr is not blank, it specifies explicit base address and all | |
1055 | * percpu symbols will be offset from the given address. If blank, | |
1056 | * @vaddr always equals @laddr + LOAD_OFFSET. | |
3e5d8f97 TH |
1057 | * |
1058 | * @phdr defines the output PHDR to use if not blank. Be warned that | |
1059 | * output PHDR is sticky. If @phdr is specified, the next output | |
1060 | * section in the linker script will go there too. @phdr should have | |
1061 | * a leading colon. | |
1062 | * | |
3ac6cffe TH |
1063 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
1064 | * If there is no need to put the percpu section at a predetermined | |
0415b00d | 1065 | * address, use PERCPU_SECTION. |
3e5d8f97 | 1066 | */ |
19df0c2f | 1067 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
a6214385 MY |
1068 | __per_cpu_load = .; \ |
1069 | .data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) { \ | |
6ea0c34d | 1070 | PERCPU_INPUT(cacheline) \ |
6b7c38d5 | 1071 | } phdr \ |
a6214385 | 1072 | . = __per_cpu_load + SIZEOF(.data..percpu); |
3e5d8f97 TH |
1073 | |
1074 | /** | |
0415b00d | 1075 | * PERCPU_SECTION - define output section for percpu area, simple version |
19df0c2f | 1076 | * @cacheline: cacheline size |
3e5d8f97 | 1077 | * |
0415b00d TH |
1078 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
1079 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and | |
3e5d8f97 | 1080 | * __per_cpu_start will be identical. |
3ac6cffe | 1081 | * |
0415b00d | 1082 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
19df0c2f TH |
1083 | * except that __per_cpu_load is defined as a relative symbol against |
1084 | * .data..percpu which is required for relocatable x86_32 configuration. | |
3e5d8f97 | 1085 | */ |
0415b00d TH |
1086 | #define PERCPU_SECTION(cacheline) \ |
1087 | . = ALIGN(PAGE_SIZE); \ | |
3d9a854c | 1088 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
a6214385 | 1089 | __per_cpu_load = .; \ |
6ea0c34d | 1090 | PERCPU_INPUT(cacheline) \ |
3ac6cffe | 1091 | } |
ef53dae8 SR |
1092 | |
1093 | ||
1094 | /* | |
1095 | * Definition of the high level *_SECTION macros | |
1096 | * They will fit only a subset of the architectures | |
1097 | */ | |
1098 | ||
1099 | ||
1100 | /* | |
1101 | * Writeable data. | |
1102 | * All sections are combined in a single .data section. | |
1103 | * The sections following CONSTRUCTORS are arranged so their | |
1104 | * typical alignment matches. | |
1105 | * A cacheline is typical/always less than a PAGE_SIZE so | |
1106 | * the sections that has this restriction (or similar) | |
1107 | * is located before the ones requiring PAGE_SIZE alignment. | |
1108 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which | |
25985edc | 1109 | * matches the requirement of PAGE_ALIGNED_DATA. |
ef53dae8 | 1110 | * |
7923f90f | 1111 | * use 0 as page_align if page_aligned data is not used */ |
c9174047 | 1112 | #define RW_DATA(cacheline, pagealigned, inittask) \ |
ef53dae8 SR |
1113 | . = ALIGN(PAGE_SIZE); \ |
1114 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ | |
39a449d9 | 1115 | INIT_TASK_DATA(inittask) \ |
1b208622 TA |
1116 | NOSAVE_DATA \ |
1117 | PAGE_ALIGNED_DATA(pagealigned) \ | |
ef53dae8 SR |
1118 | CACHELINE_ALIGNED_DATA(cacheline) \ |
1119 | READ_MOSTLY_DATA(cacheline) \ | |
1120 | DATA_DATA \ | |
1121 | CONSTRUCTORS \ | |
19d43626 | 1122 | } \ |
ee9f8fce | 1123 | BUG_TABLE \ |
ef53dae8 SR |
1124 | |
1125 | #define INIT_TEXT_SECTION(inittext_align) \ | |
1126 | . = ALIGN(inittext_align); \ | |
1127 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ | |
a6214385 | 1128 | _sinittext = .; \ |
ef53dae8 | 1129 | INIT_TEXT \ |
a6214385 | 1130 | _einittext = .; \ |
ef53dae8 SR |
1131 | } |
1132 | ||
1133 | #define INIT_DATA_SECTION(initsetup_align) \ | |
1134 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ | |
1135 | INIT_DATA \ | |
1136 | INIT_SETUP(initsetup_align) \ | |
1137 | INIT_CALLS \ | |
1138 | CON_INITCALL \ | |
ef53dae8 SR |
1139 | INIT_RAM_FS \ |
1140 | } | |
1141 | ||
04e448d9 TA |
1142 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
1143 | . = ALIGN(sbss_align); \ | |
a6214385 | 1144 | __bss_start = .; \ |
04e448d9 | 1145 | SBSS(sbss_align) \ |
ef53dae8 | 1146 | BSS(bss_align) \ |
04e448d9 | 1147 | . = ALIGN(stop_align); \ |
a6214385 | 1148 | __bss_stop = .; |