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 | ||
6d30e3a8 SR |
84 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
85 | #define ALIGN_FUNCTION() . = ALIGN(8) | |
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 SRV |
128 | STRUCT_ALIGN(); \ |
129 | __begin_sched_classes = .; \ | |
590d6979 SRV |
130 | *(__idle_sched_class) \ |
131 | *(__fair_sched_class) \ | |
132 | *(__rt_sched_class) \ | |
133 | *(__dl_sched_class) \ | |
c3a340f7 SRV |
134 | *(__stop_sched_class) \ |
135 | __end_sched_classes = .; | |
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 | ||
8da3821b | 157 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
a1326b17 MR |
158 | /* |
159 | * The ftrace call sites are logged to a section whose name depends on the | |
160 | * compiler option used. A given kernel image will only use one, AKA | |
161 | * FTRACE_CALLSITE_SECTION. We capture all of them here to avoid header | |
162 | * dependencies for FTRACE_CALLSITE_SECTION's definition. | |
95f1fa9e | 163 | * |
46f94692 | 164 | * Need to also make ftrace_stub_graph point to ftrace_stub |
b83b43ff SRV |
165 | * so that the same stub location may have different protocols |
166 | * and not mess up with C verifiers. | |
a1326b17 | 167 | */ |
4b3b4c5e | 168 | #define MCOUNT_REC() . = ALIGN(8); \ |
a6214385 | 169 | __start_mcount_loc = .; \ |
266ff2a8 | 170 | KEEP(*(__mcount_loc)) \ |
a1326b17 | 171 | KEEP(*(__patchable_function_entries)) \ |
b83b43ff | 172 | __stop_mcount_loc = .; \ |
46f94692 | 173 | ftrace_stub_graph = ftrace_stub; |
8da3821b | 174 | #else |
b83b43ff | 175 | # ifdef CONFIG_FUNCTION_TRACER |
46f94692 | 176 | # define MCOUNT_REC() ftrace_stub_graph = ftrace_stub; |
b83b43ff SRV |
177 | # else |
178 | # define MCOUNT_REC() | |
179 | # endif | |
8da3821b | 180 | #endif |
eb8f6890 | 181 | |
2ed84eeb | 182 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
a6214385 | 183 | #define LIKELY_PROFILE() __start_annotated_branch_profile = .; \ |
266ff2a8 | 184 | KEEP(*(_ftrace_annotated_branch)) \ |
a6214385 | 185 | __stop_annotated_branch_profile = .; |
1f0d69a9 SR |
186 | #else |
187 | #define LIKELY_PROFILE() | |
188 | #endif | |
189 | ||
2bcd521a | 190 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
a6214385 | 191 | #define BRANCH_PROFILE() __start_branch_profile = .; \ |
266ff2a8 | 192 | KEEP(*(_ftrace_branch)) \ |
a6214385 | 193 | __stop_branch_profile = .; |
2bcd521a SR |
194 | #else |
195 | #define BRANCH_PROFILE() | |
196 | #endif | |
197 | ||
376e2424 | 198 | #ifdef CONFIG_KPROBES |
69902c71 | 199 | #define KPROBE_BLACKLIST() . = ALIGN(8); \ |
a6214385 | 200 | __start_kprobe_blacklist = .; \ |
4b89b7f7 | 201 | KEEP(*(_kprobe_blacklist)) \ |
a6214385 | 202 | __stop_kprobe_blacklist = .; |
376e2424 MH |
203 | #else |
204 | #define KPROBE_BLACKLIST() | |
205 | #endif | |
206 | ||
540adea3 | 207 | #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
663faf9f | 208 | #define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \ |
a6214385 | 209 | __start_error_injection_whitelist = .; \ |
540adea3 | 210 | KEEP(*(_error_injection_whitelist)) \ |
a6214385 | 211 | __stop_error_injection_whitelist = .; |
92ace999 | 212 | #else |
540adea3 | 213 | #define ERROR_INJECT_WHITELIST() |
92ace999 JB |
214 | #endif |
215 | ||
5f77a88b | 216 | #ifdef CONFIG_EVENT_TRACING |
e4a9ea5e | 217 | #define FTRACE_EVENTS() . = ALIGN(8); \ |
a6214385 | 218 | __start_ftrace_events = .; \ |
4b89b7f7 | 219 | KEEP(*(_ftrace_events)) \ |
a6214385 MY |
220 | __stop_ftrace_events = .; \ |
221 | __start_ftrace_eval_maps = .; \ | |
02fd7f68 | 222 | KEEP(*(_ftrace_eval_map)) \ |
a6214385 | 223 | __stop_ftrace_eval_maps = .; |
b77e38aa SR |
224 | #else |
225 | #define FTRACE_EVENTS() | |
226 | #endif | |
227 | ||
1ba28e02 | 228 | #ifdef CONFIG_TRACING |
a6214385 | 229 | #define TRACE_PRINTKS() __start___trace_bprintk_fmt = .; \ |
4b89b7f7 | 230 | KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \ |
a6214385 MY |
231 | __stop___trace_bprintk_fmt = .; |
232 | #define TRACEPOINT_STR() __start___tracepoint_str = .; \ | |
4b89b7f7 | 233 | KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \ |
a6214385 | 234 | __stop___tracepoint_str = .; |
1ba28e02 LJ |
235 | #else |
236 | #define TRACE_PRINTKS() | |
102c9323 | 237 | #define TRACEPOINT_STR() |
1ba28e02 LJ |
238 | #endif |
239 | ||
bed1ffca | 240 | #ifdef CONFIG_FTRACE_SYSCALLS |
3d56e331 | 241 | #define TRACE_SYSCALLS() . = ALIGN(8); \ |
a6214385 | 242 | __start_syscalls_metadata = .; \ |
4b89b7f7 | 243 | KEEP(*(__syscalls_metadata)) \ |
a6214385 | 244 | __stop_syscalls_metadata = .; |
bed1ffca FW |
245 | #else |
246 | #define TRACE_SYSCALLS() | |
247 | #endif | |
248 | ||
c4f6699d AS |
249 | #ifdef CONFIG_BPF_EVENTS |
250 | #define BPF_RAW_TP() STRUCT_ALIGN(); \ | |
a6214385 | 251 | __start__bpf_raw_tp = .; \ |
c4f6699d | 252 | KEEP(*(__bpf_raw_tp_map)) \ |
a6214385 | 253 | __stop__bpf_raw_tp = .; |
c4f6699d AS |
254 | #else |
255 | #define BPF_RAW_TP() | |
256 | #endif | |
257 | ||
470ca0de | 258 | #ifdef CONFIG_SERIAL_EARLYCON |
dd709e72 | 259 | #define EARLYCON_TABLE() . = ALIGN(8); \ |
a6214385 | 260 | __earlycon_table = .; \ |
4b89b7f7 | 261 | KEEP(*(__earlycon_table)) \ |
a6214385 | 262 | __earlycon_table_end = .; |
470ca0de PH |
263 | #else |
264 | #define EARLYCON_TABLE() | |
265 | #endif | |
aab94339 | 266 | |
3ac946d1 KC |
267 | #ifdef CONFIG_SECURITY |
268 | #define LSM_TABLE() . = ALIGN(8); \ | |
269 | __start_lsm_info = .; \ | |
270 | KEEP(*(.lsm_info.init)) \ | |
271 | __end_lsm_info = .; | |
e6b1db98 MG |
272 | #define EARLY_LSM_TABLE() . = ALIGN(8); \ |
273 | __start_early_lsm_info = .; \ | |
274 | KEEP(*(.early_lsm_info.init)) \ | |
275 | __end_early_lsm_info = .; | |
3ac946d1 KC |
276 | #else |
277 | #define LSM_TABLE() | |
e6b1db98 | 278 | #define EARLY_LSM_TABLE() |
3ac946d1 KC |
279 | #endif |
280 | ||
06309288 RH |
281 | #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
282 | #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) | |
5ee02af1 | 283 | #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
06309288 RH |
284 | #define _OF_TABLE_0(name) |
285 | #define _OF_TABLE_1(name) \ | |
f6e916b8 | 286 | . = ALIGN(8); \ |
a6214385 | 287 | __##name##_of_table = .; \ |
4b89b7f7 NP |
288 | KEEP(*(__##name##_of_table)) \ |
289 | KEEP(*(__##name##_of_table_end)) | |
06309288 | 290 | |
bb0eb050 | 291 | #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) |
06309288 RH |
292 | #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
293 | #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) | |
294 | #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) | |
295 | #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) | |
449e056c | 296 | #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
6c3ff8b1 | 297 | |
e647b532 MZ |
298 | #ifdef CONFIG_ACPI |
299 | #define ACPI_PROBE_TABLE(name) \ | |
300 | . = ALIGN(8); \ | |
a6214385 | 301 | __##name##_acpi_probe_table = .; \ |
4b89b7f7 | 302 | KEEP(*(__##name##_acpi_probe_table)) \ |
a6214385 | 303 | __##name##_acpi_probe_table_end = .; |
e647b532 MZ |
304 | #else |
305 | #define ACPI_PROBE_TABLE(name) | |
306 | #endif | |
307 | ||
980af75e DL |
308 | #ifdef CONFIG_THERMAL |
309 | #define THERMAL_TABLE(name) \ | |
310 | . = ALIGN(8); \ | |
311 | __##name##_thermal_table = .; \ | |
312 | KEEP(*(__##name##_thermal_table)) \ | |
313 | __##name##_thermal_table_end = .; | |
314 | #else | |
315 | #define THERMAL_TABLE(name) | |
316 | #endif | |
317 | ||
a20d0ef9 DL |
318 | #ifdef CONFIG_DTPM |
319 | #define DTPM_TABLE() \ | |
320 | . = ALIGN(8); \ | |
321 | __dtpm_table = .; \ | |
322 | KEEP(*(__dtpm_table)) \ | |
323 | __dtpm_table_end = .; | |
324 | #else | |
325 | #define DTPM_TABLE() | |
326 | #endif | |
327 | ||
aab94339 DB |
328 | #define KERNEL_DTB() \ |
329 | STRUCT_ALIGN(); \ | |
a6214385 | 330 | __dtb_start = .; \ |
4b89b7f7 | 331 | KEEP(*(.dtb.init.rodata)) \ |
a6214385 | 332 | __dtb_end = .; |
aab94339 | 333 | |
b67067f1 NP |
334 | /* |
335 | * .data section | |
b67067f1 | 336 | */ |
ca967258 | 337 | #define DATA_DATA \ |
129f6c48 | 338 | *(.xiptext) \ |
cb87481e | 339 | *(DATA_MAIN) \ |
312b1485 | 340 | *(.ref.data) \ |
d356c0b6 | 341 | *(.data..shared_aligned) /* percpu related */ \ |
266ff2a8 NP |
342 | MEM_KEEP(init.data*) \ |
343 | MEM_KEEP(exit.data*) \ | |
7ccaba53 | 344 | *(.data.unlikely) \ |
a6214385 | 345 | __start_once = .; \ |
b1fca27d | 346 | *(.data.once) \ |
a6214385 | 347 | __end_once = .; \ |
65498646 | 348 | STRUCT_ALIGN(); \ |
97e1c18e | 349 | *(__tracepoints) \ |
e9d376f0 JB |
350 | /* implement dynamic printk debug */ \ |
351 | . = ALIGN(8); \ | |
e5ebffe1 JC |
352 | __start___dyndbg = .; \ |
353 | KEEP(*(__dyndbg)) \ | |
354 | __stop___dyndbg = .; \ | |
2bcd521a | 355 | LIKELY_PROFILE() \ |
b77e38aa | 356 | BRANCH_PROFILE() \ |
102c9323 | 357 | TRACE_PRINTKS() \ |
c4f6699d | 358 | BPF_RAW_TP() \ |
102c9323 | 359 | TRACEPOINT_STR() |
ca967258 | 360 | |
ef53dae8 SR |
361 | /* |
362 | * Data section helpers | |
363 | */ | |
364 | #define NOSAVE_DATA \ | |
365 | . = ALIGN(PAGE_SIZE); \ | |
a6214385 | 366 | __nosave_begin = .; \ |
07b3bb1e | 367 | *(.data..nosave) \ |
ef53dae8 | 368 | . = ALIGN(PAGE_SIZE); \ |
a6214385 | 369 | __nosave_end = .; |
ef53dae8 SR |
370 | |
371 | #define PAGE_ALIGNED_DATA(page_align) \ | |
372 | . = ALIGN(page_align); \ | |
de2b41be JR |
373 | *(.data..page_aligned) \ |
374 | . = ALIGN(page_align); | |
ef53dae8 SR |
375 | |
376 | #define READ_MOSTLY_DATA(align) \ | |
377 | . = ALIGN(align); \ | |
8369744f SL |
378 | *(.data..read_mostly) \ |
379 | . = ALIGN(align); | |
ef53dae8 SR |
380 | |
381 | #define CACHELINE_ALIGNED_DATA(align) \ | |
382 | . = ALIGN(align); \ | |
4af57b78 | 383 | *(.data..cacheline_aligned) |
ef53dae8 | 384 | |
39a449d9 | 385 | #define INIT_TASK_DATA(align) \ |
ef53dae8 | 386 | . = ALIGN(align); \ |
a6214385 MY |
387 | __start_init_task = .; \ |
388 | init_thread_union = .; \ | |
389 | init_stack = .; \ | |
266ff2a8 NP |
390 | KEEP(*(.data..init_task)) \ |
391 | KEEP(*(.data..init_thread_info)) \ | |
a6214385 MY |
392 | . = __start_init_task + THREAD_SIZE; \ |
393 | __end_init_task = .; | |
ef53dae8 | 394 | |
e872267b AB |
395 | #define JUMP_TABLE_DATA \ |
396 | . = ALIGN(8); \ | |
397 | __start___jump_table = .; \ | |
398 | KEEP(*(__jump_table)) \ | |
399 | __stop___jump_table = .; | |
400 | ||
9183c3f9 JP |
401 | #define STATIC_CALL_DATA \ |
402 | . = ALIGN(8); \ | |
403 | __start_static_call_sites = .; \ | |
404 | KEEP(*(.static_call_sites)) \ | |
73f44fe1 JP |
405 | __stop_static_call_sites = .; \ |
406 | __start_static_call_tramp_key = .; \ | |
407 | KEEP(*(.static_call_tramp_key)) \ | |
408 | __stop_static_call_tramp_key = .; | |
9183c3f9 | 409 | |
32fb2fc5 HC |
410 | /* |
411 | * Allow architectures to handle ro_after_init data on their | |
412 | * own by defining an empty RO_AFTER_INIT_DATA. | |
413 | */ | |
414 | #ifndef RO_AFTER_INIT_DATA | |
d7c19b06 | 415 | #define RO_AFTER_INIT_DATA \ |
7f897acb | 416 | . = ALIGN(8); \ |
a6214385 | 417 | __start_ro_after_init = .; \ |
d7c19b06 | 418 | *(.data..ro_after_init) \ |
e872267b | 419 | JUMP_TABLE_DATA \ |
9183c3f9 | 420 | STATIC_CALL_DATA \ |
a6214385 | 421 | __end_ro_after_init = .; |
32fb2fc5 HC |
422 | #endif |
423 | ||
ef53dae8 SR |
424 | /* |
425 | * Read only Data | |
426 | */ | |
93240b32 | 427 | #define RO_DATA(align) \ |
4096b46f | 428 | . = ALIGN((align)); \ |
1da177e4 | 429 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
a6214385 | 430 | __start_rodata = .; \ |
1da177e4 | 431 | *(.rodata) *(.rodata.*) \ |
590d6979 | 432 | SCHED_DATA \ |
32fb2fc5 | 433 | RO_AFTER_INIT_DATA /* Read only after init */ \ |
65498646 | 434 | . = ALIGN(8); \ |
a6214385 | 435 | __start___tracepoints_ptrs = .; \ |
4b89b7f7 | 436 | KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \ |
a6214385 | 437 | __stop___tracepoints_ptrs = .; \ |
97e1c18e | 438 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
1da177e4 LT |
439 | } \ |
440 | \ | |
441 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ | |
442 | *(.rodata1) \ | |
443 | } \ | |
444 | \ | |
445 | /* PCI quirks */ \ | |
446 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ | |
a6214385 | 447 | __start_pci_fixups_early = .; \ |
4b89b7f7 | 448 | KEEP(*(.pci_fixup_early)) \ |
a6214385 MY |
449 | __end_pci_fixups_early = .; \ |
450 | __start_pci_fixups_header = .; \ | |
4b89b7f7 | 451 | KEEP(*(.pci_fixup_header)) \ |
a6214385 MY |
452 | __end_pci_fixups_header = .; \ |
453 | __start_pci_fixups_final = .; \ | |
4b89b7f7 | 454 | KEEP(*(.pci_fixup_final)) \ |
a6214385 MY |
455 | __end_pci_fixups_final = .; \ |
456 | __start_pci_fixups_enable = .; \ | |
4b89b7f7 | 457 | KEEP(*(.pci_fixup_enable)) \ |
a6214385 MY |
458 | __end_pci_fixups_enable = .; \ |
459 | __start_pci_fixups_resume = .; \ | |
4b89b7f7 | 460 | KEEP(*(.pci_fixup_resume)) \ |
a6214385 MY |
461 | __end_pci_fixups_resume = .; \ |
462 | __start_pci_fixups_resume_early = .; \ | |
4b89b7f7 | 463 | KEEP(*(.pci_fixup_resume_early)) \ |
a6214385 MY |
464 | __end_pci_fixups_resume_early = .; \ |
465 | __start_pci_fixups_suspend = .; \ | |
4b89b7f7 | 466 | KEEP(*(.pci_fixup_suspend)) \ |
a6214385 MY |
467 | __end_pci_fixups_suspend = .; \ |
468 | __start_pci_fixups_suspend_late = .; \ | |
4b89b7f7 | 469 | KEEP(*(.pci_fixup_suspend_late)) \ |
a6214385 | 470 | __end_pci_fixups_suspend_late = .; \ |
1da177e4 LT |
471 | } \ |
472 | \ | |
5658c769 | 473 | /* Built-in firmware blobs */ \ |
793f49a8 | 474 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) { \ |
a6214385 | 475 | __start_builtin_fw = .; \ |
4b89b7f7 | 476 | KEEP(*(.builtin_fw)) \ |
a6214385 | 477 | __end_builtin_fw = .; \ |
5658c769 DW |
478 | } \ |
479 | \ | |
63687a52 JB |
480 | TRACEDATA \ |
481 | \ | |
33701557 CD |
482 | PRINTK_INDEX \ |
483 | \ | |
1da177e4 LT |
484 | /* Kernel symbol table: Normal symbols */ \ |
485 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ | |
a6214385 | 486 | __start___ksymtab = .; \ |
b67067f1 | 487 | KEEP(*(SORT(___ksymtab+*))) \ |
a6214385 | 488 | __stop___ksymtab = .; \ |
1da177e4 LT |
489 | } \ |
490 | \ | |
491 | /* Kernel symbol table: GPL-only symbols */ \ | |
492 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 493 | __start___ksymtab_gpl = .; \ |
b67067f1 | 494 | KEEP(*(SORT(___ksymtab_gpl+*))) \ |
a6214385 | 495 | __stop___ksymtab_gpl = .; \ |
1da177e4 LT |
496 | } \ |
497 | \ | |
498 | /* Kernel symbol table: Normal symbols */ \ | |
499 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ | |
a6214385 | 500 | __start___kcrctab = .; \ |
b67067f1 | 501 | KEEP(*(SORT(___kcrctab+*))) \ |
a6214385 | 502 | __stop___kcrctab = .; \ |
1da177e4 LT |
503 | } \ |
504 | \ | |
505 | /* Kernel symbol table: GPL-only symbols */ \ | |
506 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 507 | __start___kcrctab_gpl = .; \ |
b67067f1 | 508 | KEEP(*(SORT(___kcrctab_gpl+*))) \ |
a6214385 | 509 | __stop___kcrctab_gpl = .; \ |
1da177e4 LT |
510 | } \ |
511 | \ | |
512 | /* Kernel symbol table: strings */ \ | |
513 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ | |
4b89b7f7 | 514 | *(__ksymtab_strings) \ |
1da177e4 LT |
515 | } \ |
516 | \ | |
eb8f6890 SR |
517 | /* __*init sections */ \ |
518 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ | |
312b1485 | 519 | *(.ref.rodata) \ |
eb8f6890 SR |
520 | MEM_KEEP(init.rodata) \ |
521 | MEM_KEEP(exit.rodata) \ | |
522 | } \ | |
523 | \ | |
1da177e4 LT |
524 | /* Built-in module parameters. */ \ |
525 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ | |
a6214385 | 526 | __start___param = .; \ |
4b89b7f7 | 527 | KEEP(*(__param)) \ |
a6214385 | 528 | __stop___param = .; \ |
e94965ed DT |
529 | } \ |
530 | \ | |
531 | /* Built-in module versions. */ \ | |
532 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ | |
a6214385 | 533 | __start___modver = .; \ |
4b89b7f7 | 534 | KEEP(*(__modver)) \ |
a6214385 | 535 | __stop___modver = .; \ |
7583ddfd | 536 | } \ |
eaf93707 | 537 | \ |
b8c2f776 | 538 | RO_EXCEPTION_TABLE \ |
eaf93707 | 539 | NOTES \ |
90ceddcb | 540 | BTF \ |
eaf93707 KC |
541 | \ |
542 | . = ALIGN((align)); \ | |
543 | __end_rodata = .; | |
1da177e4 | 544 | |
cf68fffb ST |
545 | |
546 | /* | |
547 | * .text..L.cfi.jumptable.* contain Control-Flow Integrity (CFI) | |
548 | * jump table entries. | |
549 | */ | |
550 | #ifdef CONFIG_CFI_CLANG | |
551 | #define TEXT_CFI_JT \ | |
552 | . = ALIGN(PMD_SIZE); \ | |
553 | __cfi_jt_start = .; \ | |
554 | *(.text..L.cfi.jumptable .text..L.cfi.jumptable.*) \ | |
555 | . = ALIGN(PMD_SIZE); \ | |
556 | __cfi_jt_end = .; | |
557 | #else | |
558 | #define TEXT_CFI_JT | |
559 | #endif | |
560 | ||
65538966 TG |
561 | /* |
562 | * Non-instrumentable text section | |
563 | */ | |
564 | #define NOINSTR_TEXT \ | |
565 | ALIGN_FUNCTION(); \ | |
566 | __noinstr_text_start = .; \ | |
567 | *(.noinstr.text) \ | |
568 | __noinstr_text_end = .; | |
569 | ||
cb87481e NP |
570 | /* |
571 | * .text section. Map to function alignment to avoid address changes | |
0f4c4af0 | 572 | * during second ld run in second ld pass when generating System.map |
cb87481e NP |
573 | * |
574 | * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead | |
575 | * code elimination is enabled, so these sections should be converted | |
576 | * to use ".." first. | |
577 | */ | |
7664709b SR |
578 | #define TEXT_TEXT \ |
579 | ALIGN_FUNCTION(); \ | |
eff8728f ND |
580 | *(.text.hot .text.hot.*) \ |
581 | *(TEXT_MAIN .text.fixup) \ | |
582 | *(.text.unlikely .text.unlikely.*) \ | |
583 | *(.text.unknown .text.unknown.*) \ | |
65538966 | 584 | NOINSTR_TEXT \ |
564c9cc8 | 585 | *(.text..refcount) \ |
312b1485 | 586 | *(.ref.text) \ |
84837881 | 587 | *(.text.asan.* .text.tsan.*) \ |
cf68fffb | 588 | TEXT_CFI_JT \ |
266ff2a8 NP |
589 | MEM_KEEP(init.text*) \ |
590 | MEM_KEEP(exit.text*) \ | |
eb8f6890 | 591 | |
7664709b | 592 | |
6d30e3a8 SR |
593 | /* sched.text is aling to function alignment to secure we have same |
594 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 595 | #define SCHED_TEXT \ |
6d30e3a8 | 596 | ALIGN_FUNCTION(); \ |
a6214385 | 597 | __sched_text_start = .; \ |
1da177e4 | 598 | *(.sched.text) \ |
a6214385 | 599 | __sched_text_end = .; |
1da177e4 | 600 | |
6d30e3a8 SR |
601 | /* spinlock.text is aling to function alignment to secure we have same |
602 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 603 | #define LOCK_TEXT \ |
6d30e3a8 | 604 | ALIGN_FUNCTION(); \ |
a6214385 | 605 | __lock_text_start = .; \ |
1da177e4 | 606 | *(.spinlock.text) \ |
a6214385 | 607 | __lock_text_end = .; |
d0aaff97 | 608 | |
6727ad9e CM |
609 | #define CPUIDLE_TEXT \ |
610 | ALIGN_FUNCTION(); \ | |
a6214385 | 611 | __cpuidle_text_start = .; \ |
6727ad9e | 612 | *(.cpuidle.text) \ |
a6214385 | 613 | __cpuidle_text_end = .; |
6727ad9e | 614 | |
d0aaff97 PP |
615 | #define KPROBES_TEXT \ |
616 | ALIGN_FUNCTION(); \ | |
a6214385 | 617 | __kprobes_text_start = .; \ |
d0aaff97 | 618 | *(.kprobes.text) \ |
a6214385 | 619 | __kprobes_text_end = .; |
a7d0c210 | 620 | |
ea714547 JO |
621 | #define ENTRY_TEXT \ |
622 | ALIGN_FUNCTION(); \ | |
a6214385 | 623 | __entry_text_start = .; \ |
ea714547 | 624 | *(.entry.text) \ |
a6214385 | 625 | __entry_text_end = .; |
ea714547 | 626 | |
a0343e82 FW |
627 | #define IRQENTRY_TEXT \ |
628 | ALIGN_FUNCTION(); \ | |
a6214385 | 629 | __irqentry_text_start = .; \ |
a0343e82 | 630 | *(.irqentry.text) \ |
a6214385 | 631 | __irqentry_text_end = .; |
a0343e82 | 632 | |
be7635e7 AP |
633 | #define SOFTIRQENTRY_TEXT \ |
634 | ALIGN_FUNCTION(); \ | |
a6214385 | 635 | __softirqentry_text_start = .; \ |
be7635e7 | 636 | *(.softirqentry.text) \ |
a6214385 | 637 | __softirqentry_text_end = .; |
be7635e7 | 638 | |
1e7e4788 JP |
639 | #define STATIC_CALL_TEXT \ |
640 | ALIGN_FUNCTION(); \ | |
641 | __static_call_text_start = .; \ | |
642 | *(.static_call.text) \ | |
643 | __static_call_text_end = .; | |
644 | ||
37c514e3 | 645 | /* Section used for early init (in .S files) */ |
266ff2a8 | 646 | #define HEAD_TEXT KEEP(*(.head.text)) |
37c514e3 | 647 | |
7923f90f | 648 | #define HEAD_TEXT_SECTION \ |
ef53dae8 SR |
649 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
650 | HEAD_TEXT \ | |
651 | } | |
652 | ||
653 | /* | |
654 | * Exception table | |
655 | */ | |
656 | #define EXCEPTION_TABLE(align) \ | |
657 | . = ALIGN(align); \ | |
658 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ | |
a6214385 | 659 | __start___ex_table = .; \ |
4b89b7f7 | 660 | KEEP(*(__ex_table)) \ |
a6214385 | 661 | __stop___ex_table = .; \ |
ef53dae8 SR |
662 | } |
663 | ||
90ceddcb FS |
664 | /* |
665 | * .BTF | |
666 | */ | |
667 | #ifdef CONFIG_DEBUG_INFO_BTF | |
668 | #define BTF \ | |
669 | .BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { \ | |
670 | __start_BTF = .; \ | |
65c20439 | 671 | KEEP(*(.BTF)) \ |
90ceddcb | 672 | __stop_BTF = .; \ |
5a2798ab JO |
673 | } \ |
674 | . = ALIGN(4); \ | |
675 | .BTF_ids : AT(ADDR(.BTF_ids) - LOAD_OFFSET) { \ | |
676 | *(.BTF_ids) \ | |
90ceddcb FS |
677 | } |
678 | #else | |
679 | #define BTF | |
680 | #endif | |
681 | ||
ef53dae8 SR |
682 | /* |
683 | * Init task | |
684 | */ | |
39a449d9 | 685 | #define INIT_TASK_DATA_SECTION(align) \ |
ef53dae8 | 686 | . = ALIGN(align); \ |
da5e37ef | 687 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
39a449d9 | 688 | INIT_TASK_DATA(align) \ |
ef53dae8 | 689 | } |
37c514e3 | 690 | |
b99b87f7 | 691 | #ifdef CONFIG_CONSTRUCTORS |
2a2325e6 | 692 | #define KERNEL_CTORS() . = ALIGN(8); \ |
a6214385 | 693 | __ctors_start = .; \ |
3e663148 | 694 | KEEP(*(SORT(.ctors.*))) \ |
4b89b7f7 NP |
695 | KEEP(*(.ctors)) \ |
696 | KEEP(*(SORT(.init_array.*))) \ | |
697 | KEEP(*(.init_array)) \ | |
a6214385 | 698 | __ctors_end = .; |
b99b87f7 PO |
699 | #else |
700 | #define KERNEL_CTORS() | |
701 | #endif | |
702 | ||
01ba2bdc | 703 | /* init and exit section handling */ |
eb8f6890 | 704 | #define INIT_DATA \ |
b67067f1 | 705 | KEEP(*(SORT(___kentry+*))) \ |
266ff2a8 NP |
706 | *(.init.data init.data.*) \ |
707 | MEM_DISCARD(init.data*) \ | |
b99b87f7 | 708 | KERNEL_CTORS() \ |
4b3b4c5e | 709 | MCOUNT_REC() \ |
266ff2a8 | 710 | *(.init.rodata .init.rodata.*) \ |
e4a9ea5e | 711 | FTRACE_EVENTS() \ |
3d56e331 | 712 | TRACE_SYSCALLS() \ |
376e2424 | 713 | KPROBE_BLACKLIST() \ |
540adea3 | 714 | ERROR_INJECT_WHITELIST() \ |
aab94339 | 715 | MEM_DISCARD(init.rodata) \ |
f2f6c255 | 716 | CLK_OF_TABLES() \ |
f618c470 | 717 | RESERVEDMEM_OF_TABLES() \ |
2fcc112a | 718 | TIMER_OF_TABLES() \ |
6c3ff8b1 | 719 | CPU_METHOD_OF_TABLES() \ |
449e056c | 720 | CPUIDLE_METHOD_OF_TABLES() \ |
f6e916b8 | 721 | KERNEL_DTB() \ |
b0b6abd3 | 722 | IRQCHIP_OF_MATCH_TABLE() \ |
46e589a3 | 723 | ACPI_PROBE_TABLE(irqchip) \ |
2fcc112a | 724 | ACPI_PROBE_TABLE(timer) \ |
980af75e | 725 | THERMAL_TABLE(governor) \ |
a20d0ef9 | 726 | DTPM_TABLE() \ |
3ac946d1 | 727 | EARLYCON_TABLE() \ |
e6b1db98 | 728 | LSM_TABLE() \ |
90a025a8 BH |
729 | EARLY_LSM_TABLE() \ |
730 | KUNIT_TABLE() | |
eb8f6890 SR |
731 | |
732 | #define INIT_TEXT \ | |
266ff2a8 | 733 | *(.init.text .init.text.*) \ |
e41f501d | 734 | *(.text.startup) \ |
266ff2a8 | 735 | MEM_DISCARD(init.text*) |
eb8f6890 SR |
736 | |
737 | #define EXIT_DATA \ | |
266ff2a8 | 738 | *(.exit.data .exit.data.*) \ |
8dcf86ca PO |
739 | *(.fini_array .fini_array.*) \ |
740 | *(.dtors .dtors.*) \ | |
266ff2a8 NP |
741 | MEM_DISCARD(exit.data*) \ |
742 | MEM_DISCARD(exit.rodata*) | |
01ba2bdc | 743 | |
eb8f6890 SR |
744 | #define EXIT_TEXT \ |
745 | *(.exit.text) \ | |
e41f501d | 746 | *(.text.exit) \ |
eb8f6890 | 747 | MEM_DISCARD(exit.text) |
01ba2bdc | 748 | |
7923f90f SR |
749 | #define EXIT_CALL \ |
750 | *(.exitcall.exit) | |
751 | ||
ef53dae8 SR |
752 | /* |
753 | * bss (Block Started by Symbol) - uninitialized data | |
754 | * zeroed during startup | |
755 | */ | |
04e448d9 TA |
756 | #define SBSS(sbss_align) \ |
757 | . = ALIGN(sbss_align); \ | |
ef53dae8 | 758 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
83a092cf | 759 | *(.dynsbss) \ |
266ff2a8 | 760 | *(SBSS_MAIN) \ |
ef53dae8 SR |
761 | *(.scommon) \ |
762 | } | |
763 | ||
c87728ca DD |
764 | /* |
765 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra | |
766 | * sections to the front of bss. | |
767 | */ | |
768 | #ifndef BSS_FIRST_SECTIONS | |
769 | #define BSS_FIRST_SECTIONS | |
770 | #endif | |
771 | ||
ef53dae8 SR |
772 | #define BSS(bss_align) \ |
773 | . = ALIGN(bss_align); \ | |
774 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ | |
c87728ca | 775 | BSS_FIRST_SECTIONS \ |
de2b41be | 776 | . = ALIGN(PAGE_SIZE); \ |
7c74df07 | 777 | *(.bss..page_aligned) \ |
de2b41be | 778 | . = ALIGN(PAGE_SIZE); \ |
ef53dae8 | 779 | *(.dynbss) \ |
cb87481e | 780 | *(BSS_MAIN) \ |
ef53dae8 | 781 | *(COMMON) \ |
ef53dae8 SR |
782 | } |
783 | ||
784 | /* | |
785 | * DWARF debug sections. | |
786 | * Symbols in the DWARF debugging sections are relative to | |
787 | * the beginning of the section so we begin them at 0. | |
788 | */ | |
a7d0c210 PBG |
789 | #define DWARF_DEBUG \ |
790 | /* DWARF 1 */ \ | |
791 | .debug 0 : { *(.debug) } \ | |
792 | .line 0 : { *(.line) } \ | |
793 | /* GNU DWARF 1 extensions */ \ | |
794 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ | |
795 | .debug_sfnames 0 : { *(.debug_sfnames) } \ | |
796 | /* DWARF 1.1 and DWARF 2 */ \ | |
797 | .debug_aranges 0 : { *(.debug_aranges) } \ | |
798 | .debug_pubnames 0 : { *(.debug_pubnames) } \ | |
799 | /* DWARF 2 */ \ | |
800 | .debug_info 0 : { *(.debug_info \ | |
801 | .gnu.linkonce.wi.*) } \ | |
802 | .debug_abbrev 0 : { *(.debug_abbrev) } \ | |
803 | .debug_line 0 : { *(.debug_line) } \ | |
804 | .debug_frame 0 : { *(.debug_frame) } \ | |
805 | .debug_str 0 : { *(.debug_str) } \ | |
806 | .debug_loc 0 : { *(.debug_loc) } \ | |
807 | .debug_macinfo 0 : { *(.debug_macinfo) } \ | |
83a092cf NP |
808 | .debug_pubtypes 0 : { *(.debug_pubtypes) } \ |
809 | /* DWARF 3 */ \ | |
810 | .debug_ranges 0 : { *(.debug_ranges) } \ | |
a7d0c210 PBG |
811 | /* SGI/MIPS DWARF 2 extensions */ \ |
812 | .debug_weaknames 0 : { *(.debug_weaknames) } \ | |
813 | .debug_funcnames 0 : { *(.debug_funcnames) } \ | |
814 | .debug_typenames 0 : { *(.debug_typenames) } \ | |
815 | .debug_varnames 0 : { *(.debug_varnames) } \ | |
83a092cf NP |
816 | /* GNU DWARF 2 extensions */ \ |
817 | .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \ | |
818 | .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \ | |
819 | /* DWARF 4 */ \ | |
820 | .debug_types 0 : { *(.debug_types) } \ | |
821 | /* DWARF 5 */ \ | |
3c4fa46b ND |
822 | .debug_addr 0 : { *(.debug_addr) } \ |
823 | .debug_line_str 0 : { *(.debug_line_str) } \ | |
824 | .debug_loclists 0 : { *(.debug_loclists) } \ | |
83a092cf | 825 | .debug_macro 0 : { *(.debug_macro) } \ |
3c4fa46b ND |
826 | .debug_names 0 : { *(.debug_names) } \ |
827 | .debug_rnglists 0 : { *(.debug_rnglists) } \ | |
828 | .debug_str_offsets 0 : { *(.debug_str_offsets) } | |
a7d0c210 | 829 | |
c604abc3 | 830 | /* Stabs debugging sections. */ |
a7d0c210 PBG |
831 | #define STABS_DEBUG \ |
832 | .stab 0 : { *(.stab) } \ | |
833 | .stabstr 0 : { *(.stabstr) } \ | |
834 | .stab.excl 0 : { *(.stab.excl) } \ | |
835 | .stab.exclstr 0 : { *(.stab.exclstr) } \ | |
836 | .stab.index 0 : { *(.stab.index) } \ | |
c604abc3 KC |
837 | .stab.indexstr 0 : { *(.stab.indexstr) } |
838 | ||
839 | /* Required sections not related to debugging. */ | |
840 | #define ELF_DETAILS \ | |
a840c4de KC |
841 | .comment 0 : { *(.comment) } \ |
842 | .symtab 0 : { *(.symtab) } \ | |
843 | .strtab 0 : { *(.strtab) } \ | |
844 | .shstrtab 0 : { *(.shstrtab) } | |
9c9b8b38 | 845 | |
6360b1fb | 846 | #ifdef CONFIG_GENERIC_BUG |
7664c5a1 JF |
847 | #define BUG_TABLE \ |
848 | . = ALIGN(8); \ | |
849 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ | |
a6214385 | 850 | __start___bug_table = .; \ |
4b89b7f7 | 851 | KEEP(*(__bug_table)) \ |
a6214385 | 852 | __stop___bug_table = .; \ |
7664c5a1 | 853 | } |
6360b1fb JB |
854 | #else |
855 | #define BUG_TABLE | |
856 | #endif | |
7664c5a1 | 857 | |
11af8474 | 858 | #ifdef CONFIG_UNWINDER_ORC |
ee9f8fce JP |
859 | #define ORC_UNWIND_TABLE \ |
860 | . = ALIGN(4); \ | |
861 | .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \ | |
a6214385 | 862 | __start_orc_unwind_ip = .; \ |
ee9f8fce | 863 | KEEP(*(.orc_unwind_ip)) \ |
a6214385 | 864 | __stop_orc_unwind_ip = .; \ |
ee9f8fce | 865 | } \ |
f76a16ad | 866 | . = ALIGN(2); \ |
ee9f8fce | 867 | .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ |
a6214385 | 868 | __start_orc_unwind = .; \ |
ee9f8fce | 869 | KEEP(*(.orc_unwind)) \ |
a6214385 | 870 | __stop_orc_unwind = .; \ |
ee9f8fce JP |
871 | } \ |
872 | . = ALIGN(4); \ | |
873 | .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \ | |
a6214385 | 874 | orc_lookup = .; \ |
ee9f8fce JP |
875 | . += (((SIZEOF(.text) + LOOKUP_BLOCK_SIZE - 1) / \ |
876 | LOOKUP_BLOCK_SIZE) + 1) * 4; \ | |
a6214385 | 877 | orc_lookup_end = .; \ |
ee9f8fce JP |
878 | } |
879 | #else | |
880 | #define ORC_UNWIND_TABLE | |
881 | #endif | |
882 | ||
63687a52 JB |
883 | #ifdef CONFIG_PM_TRACE |
884 | #define TRACEDATA \ | |
885 | . = ALIGN(4); \ | |
886 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ | |
a6214385 | 887 | __tracedata_start = .; \ |
4b89b7f7 | 888 | KEEP(*(.tracedata)) \ |
a6214385 | 889 | __tracedata_end = .; \ |
63687a52 JB |
890 | } |
891 | #else | |
892 | #define TRACEDATA | |
893 | #endif | |
894 | ||
33701557 CD |
895 | #ifdef CONFIG_PRINTK_INDEX |
896 | #define PRINTK_INDEX \ | |
897 | .printk_index : AT(ADDR(.printk_index) - LOAD_OFFSET) { \ | |
898 | __start_printk_index = .; \ | |
899 | *(.printk_index) \ | |
900 | __stop_printk_index = .; \ | |
901 | } | |
902 | #else | |
903 | #define PRINTK_INDEX | |
904 | #endif | |
905 | ||
9c9b8b38 | 906 | #define NOTES \ |
cbe87121 | 907 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
a6214385 | 908 | __start_notes = .; \ |
266ff2a8 | 909 | KEEP(*(.note.*)) \ |
a6214385 | 910 | __stop_notes = .; \ |
fbe6a8e6 KC |
911 | } NOTES_HEADERS \ |
912 | NOTES_HEADERS_RESTORE | |
61ce1efe | 913 | |
ef53dae8 SR |
914 | #define INIT_SETUP(initsetup_align) \ |
915 | . = ALIGN(initsetup_align); \ | |
a6214385 | 916 | __setup_start = .; \ |
4b89b7f7 | 917 | KEEP(*(.init.setup)) \ |
a6214385 | 918 | __setup_end = .; |
ef53dae8 | 919 | |
026cee00 | 920 | #define INIT_CALLS_LEVEL(level) \ |
a6214385 | 921 | __initcall##level##_start = .; \ |
b67067f1 NP |
922 | KEEP(*(.initcall##level##.init)) \ |
923 | KEEP(*(.initcall##level##s.init)) \ | |
61ce1efe | 924 | |
ef53dae8 | 925 | #define INIT_CALLS \ |
a6214385 | 926 | __initcall_start = .; \ |
b67067f1 | 927 | KEEP(*(.initcallearly.init)) \ |
026cee00 PM |
928 | INIT_CALLS_LEVEL(0) \ |
929 | INIT_CALLS_LEVEL(1) \ | |
930 | INIT_CALLS_LEVEL(2) \ | |
931 | INIT_CALLS_LEVEL(3) \ | |
932 | INIT_CALLS_LEVEL(4) \ | |
933 | INIT_CALLS_LEVEL(5) \ | |
934 | INIT_CALLS_LEVEL(rootfs) \ | |
935 | INIT_CALLS_LEVEL(6) \ | |
936 | INIT_CALLS_LEVEL(7) \ | |
a6214385 | 937 | __initcall_end = .; |
ef53dae8 SR |
938 | |
939 | #define CON_INITCALL \ | |
a6214385 | 940 | __con_initcall_start = .; \ |
b67067f1 | 941 | KEEP(*(.con_initcall.init)) \ |
a6214385 | 942 | __con_initcall_end = .; |
ef53dae8 | 943 | |
90a025a8 BH |
944 | /* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */ |
945 | #define KUNIT_TABLE() \ | |
946 | . = ALIGN(8); \ | |
947 | __kunit_suites_start = .; \ | |
948 | KEEP(*(.kunit_test_suites)) \ | |
949 | __kunit_suites_end = .; | |
950 | ||
ef53dae8 SR |
951 | #ifdef CONFIG_BLK_DEV_INITRD |
952 | #define INIT_RAM_FS \ | |
d8826262 | 953 | . = ALIGN(4); \ |
a6214385 | 954 | __initramfs_start = .; \ |
b67067f1 | 955 | KEEP(*(.init.ramfs)) \ |
ffe8018c | 956 | . = ALIGN(8); \ |
b67067f1 | 957 | KEEP(*(.init.ramfs.info)) |
ef53dae8 | 958 | #else |
eadfe219 | 959 | #define INIT_RAM_FS |
ef53dae8 SR |
960 | #endif |
961 | ||
ac26963a BS |
962 | /* |
963 | * Memory encryption operates on a page basis. Since we need to clear | |
964 | * the memory encryption mask for this section, it needs to be aligned | |
965 | * on a page boundary and be a page-size multiple in length. | |
966 | * | |
967 | * Note: We use a separate section so that only this section gets | |
968 | * decrypted to avoid exposing more than we wish. | |
969 | */ | |
970 | #ifdef CONFIG_AMD_MEM_ENCRYPT | |
971 | #define PERCPU_DECRYPTED_SECTION \ | |
972 | . = ALIGN(PAGE_SIZE); \ | |
d4c63999 | 973 | *(.data..decrypted) \ |
ac26963a BS |
974 | *(.data..percpu..decrypted) \ |
975 | . = ALIGN(PAGE_SIZE); | |
976 | #else | |
977 | #define PERCPU_DECRYPTED_SECTION | |
978 | #endif | |
979 | ||
980 | ||
023bf6f1 TH |
981 | /* |
982 | * Default discarded sections. | |
983 | * | |
984 | * Some archs want to discard exit text/data at runtime rather than | |
985 | * link time due to cross-section references such as alt instructions, | |
986 | * bug table, eh_frame, etc. DISCARDS must be the last of output | |
987 | * section definitions so that such archs put those in earlier section | |
988 | * definitions. | |
989 | */ | |
84d5f77f L |
990 | #ifdef RUNTIME_DISCARD_EXIT |
991 | #define EXIT_DISCARDS | |
992 | #else | |
993 | #define EXIT_DISCARDS \ | |
994 | EXIT_TEXT \ | |
995 | EXIT_DATA | |
996 | #endif | |
997 | ||
d812db78 | 998 | /* |
f5b6a74d NC |
999 | * Clang's -fprofile-arcs, -fsanitize=kernel-address, and |
1000 | * -fsanitize=thread produce unwanted sections (.eh_frame | |
1001 | * and .init_array.*), but CONFIG_CONSTRUCTORS wants to | |
1002 | * keep any .init_array.* sections. | |
d812db78 KC |
1003 | * https://bugs.llvm.org/show_bug.cgi?id=46478 |
1004 | */ | |
cf68fffb ST |
1005 | #if defined(CONFIG_GCOV_KERNEL) || defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KCSAN) || \ |
1006 | defined(CONFIG_CFI_CLANG) | |
d812db78 KC |
1007 | # ifdef CONFIG_CONSTRUCTORS |
1008 | # define SANITIZER_DISCARDS \ | |
1009 | *(.eh_frame) | |
1010 | # else | |
1011 | # define SANITIZER_DISCARDS \ | |
1012 | *(.init_array) *(.init_array.*) \ | |
1013 | *(.eh_frame) | |
1014 | # endif | |
1015 | #else | |
1016 | # define SANITIZER_DISCARDS | |
1017 | #endif | |
1018 | ||
03c2b85c | 1019 | #define COMMON_DISCARDS \ |
d812db78 | 1020 | SANITIZER_DISCARDS \ |
03c2b85c KC |
1021 | *(.discard) \ |
1022 | *(.discard.*) \ | |
dfbe6968 KC |
1023 | *(.modinfo) \ |
1024 | /* ld.bfd warns about .gnu.version* even when not emitted */ \ | |
1025 | *(.gnu.version*) \ | |
03c2b85c | 1026 | |
405d967d TH |
1027 | #define DISCARDS \ |
1028 | /DISCARD/ : { \ | |
84d5f77f | 1029 | EXIT_DISCARDS \ |
023bf6f1 | 1030 | EXIT_CALL \ |
03c2b85c | 1031 | COMMON_DISCARDS \ |
405d967d TH |
1032 | } |
1033 | ||
6ea0c34d MF |
1034 | /** |
1035 | * PERCPU_INPUT - the percpu input sections | |
1036 | * @cacheline: cacheline size | |
1037 | * | |
1038 | * The core percpu section names and core symbols which do not rely | |
1039 | * directly upon load addresses. | |
1040 | * | |
1041 | * @cacheline is used to align subsections to avoid false cacheline | |
1042 | * sharing between subsections for different purposes. | |
1043 | */ | |
1044 | #define PERCPU_INPUT(cacheline) \ | |
a6214385 | 1045 | __per_cpu_start = .; \ |
6ea0c34d MF |
1046 | *(.data..percpu..first) \ |
1047 | . = ALIGN(PAGE_SIZE); \ | |
1048 | *(.data..percpu..page_aligned) \ | |
1049 | . = ALIGN(cacheline); \ | |
330d2822 | 1050 | *(.data..percpu..read_mostly) \ |
6ea0c34d MF |
1051 | . = ALIGN(cacheline); \ |
1052 | *(.data..percpu) \ | |
1053 | *(.data..percpu..shared_aligned) \ | |
ac26963a | 1054 | PERCPU_DECRYPTED_SECTION \ |
a6214385 | 1055 | __per_cpu_end = .; |
6ea0c34d | 1056 | |
3e5d8f97 | 1057 | /** |
6b7c38d5 | 1058 | * PERCPU_VADDR - define output section for percpu area |
19df0c2f | 1059 | * @cacheline: cacheline size |
3e5d8f97 TH |
1060 | * @vaddr: explicit base address (optional) |
1061 | * @phdr: destination PHDR (optional) | |
1062 | * | |
19df0c2f TH |
1063 | * Macro which expands to output section for percpu area. |
1064 | * | |
1065 | * @cacheline is used to align subsections to avoid false cacheline | |
1066 | * sharing between subsections for different purposes. | |
1067 | * | |
1068 | * If @vaddr is not blank, it specifies explicit base address and all | |
1069 | * percpu symbols will be offset from the given address. If blank, | |
1070 | * @vaddr always equals @laddr + LOAD_OFFSET. | |
3e5d8f97 TH |
1071 | * |
1072 | * @phdr defines the output PHDR to use if not blank. Be warned that | |
1073 | * output PHDR is sticky. If @phdr is specified, the next output | |
1074 | * section in the linker script will go there too. @phdr should have | |
1075 | * a leading colon. | |
1076 | * | |
3ac6cffe TH |
1077 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
1078 | * If there is no need to put the percpu section at a predetermined | |
0415b00d | 1079 | * address, use PERCPU_SECTION. |
3e5d8f97 | 1080 | */ |
19df0c2f | 1081 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
a6214385 MY |
1082 | __per_cpu_load = .; \ |
1083 | .data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) { \ | |
6ea0c34d | 1084 | PERCPU_INPUT(cacheline) \ |
6b7c38d5 | 1085 | } phdr \ |
a6214385 | 1086 | . = __per_cpu_load + SIZEOF(.data..percpu); |
3e5d8f97 TH |
1087 | |
1088 | /** | |
0415b00d | 1089 | * PERCPU_SECTION - define output section for percpu area, simple version |
19df0c2f | 1090 | * @cacheline: cacheline size |
3e5d8f97 | 1091 | * |
0415b00d TH |
1092 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
1093 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and | |
3e5d8f97 | 1094 | * __per_cpu_start will be identical. |
3ac6cffe | 1095 | * |
0415b00d | 1096 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
19df0c2f TH |
1097 | * except that __per_cpu_load is defined as a relative symbol against |
1098 | * .data..percpu which is required for relocatable x86_32 configuration. | |
3e5d8f97 | 1099 | */ |
0415b00d TH |
1100 | #define PERCPU_SECTION(cacheline) \ |
1101 | . = ALIGN(PAGE_SIZE); \ | |
3d9a854c | 1102 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
a6214385 | 1103 | __per_cpu_load = .; \ |
6ea0c34d | 1104 | PERCPU_INPUT(cacheline) \ |
3ac6cffe | 1105 | } |
ef53dae8 SR |
1106 | |
1107 | ||
1108 | /* | |
1109 | * Definition of the high level *_SECTION macros | |
1110 | * They will fit only a subset of the architectures | |
1111 | */ | |
1112 | ||
1113 | ||
1114 | /* | |
1115 | * Writeable data. | |
1116 | * All sections are combined in a single .data section. | |
1117 | * The sections following CONSTRUCTORS are arranged so their | |
1118 | * typical alignment matches. | |
1119 | * A cacheline is typical/always less than a PAGE_SIZE so | |
1120 | * the sections that has this restriction (or similar) | |
1121 | * is located before the ones requiring PAGE_SIZE alignment. | |
1122 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which | |
25985edc | 1123 | * matches the requirement of PAGE_ALIGNED_DATA. |
ef53dae8 | 1124 | * |
7923f90f | 1125 | * use 0 as page_align if page_aligned data is not used */ |
c9174047 | 1126 | #define RW_DATA(cacheline, pagealigned, inittask) \ |
ef53dae8 SR |
1127 | . = ALIGN(PAGE_SIZE); \ |
1128 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ | |
39a449d9 | 1129 | INIT_TASK_DATA(inittask) \ |
1b208622 TA |
1130 | NOSAVE_DATA \ |
1131 | PAGE_ALIGNED_DATA(pagealigned) \ | |
ef53dae8 SR |
1132 | CACHELINE_ALIGNED_DATA(cacheline) \ |
1133 | READ_MOSTLY_DATA(cacheline) \ | |
1134 | DATA_DATA \ | |
1135 | CONSTRUCTORS \ | |
19d43626 | 1136 | } \ |
ee9f8fce | 1137 | BUG_TABLE \ |
ef53dae8 SR |
1138 | |
1139 | #define INIT_TEXT_SECTION(inittext_align) \ | |
1140 | . = ALIGN(inittext_align); \ | |
1141 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ | |
a6214385 | 1142 | _sinittext = .; \ |
ef53dae8 | 1143 | INIT_TEXT \ |
a6214385 | 1144 | _einittext = .; \ |
ef53dae8 SR |
1145 | } |
1146 | ||
1147 | #define INIT_DATA_SECTION(initsetup_align) \ | |
1148 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ | |
1149 | INIT_DATA \ | |
1150 | INIT_SETUP(initsetup_align) \ | |
1151 | INIT_CALLS \ | |
1152 | CON_INITCALL \ | |
ef53dae8 SR |
1153 | INIT_RAM_FS \ |
1154 | } | |
1155 | ||
04e448d9 TA |
1156 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
1157 | . = ALIGN(sbss_align); \ | |
a6214385 | 1158 | __bss_start = .; \ |
04e448d9 | 1159 | SBSS(sbss_align) \ |
ef53dae8 | 1160 | BSS(bss_align) \ |
04e448d9 | 1161 | . = ALIGN(stop_align); \ |
a6214385 | 1162 | __bss_stop = .; |