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Commit | Line | Data |
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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 = .; | |
26 | * RO_DATA_SECTION(PAGE_SIZE) | |
27 | * RW_DATA_SECTION(...) | |
28 | * _edata = .; | |
29 | * | |
30 | * EXCEPTION_TABLE(...) | |
31 | * NOTES | |
32 | * | |
04e448d9 | 33 | * BSS_SECTION(0, 0, 0) |
ef53dae8 SR |
34 | * _end = .; |
35 | * | |
ef53dae8 SR |
36 | * STABS_DEBUG |
37 | * DWARF_DEBUG | |
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 | ||
6d30e3a8 SR |
57 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
58 | #define ALIGN_FUNCTION() . = ALIGN(8) | |
59 | ||
cb87481e NP |
60 | /* |
61 | * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which | |
62 | * generates .data.identifier sections, which need to be pulled in with | |
63 | * .data. We don't want to pull in .data..other sections, which Linux | |
64 | * has defined. Same for text and bss. | |
266ff2a8 NP |
65 | * |
66 | * RODATA_MAIN is not used because existing code already defines .rodata.x | |
67 | * sections to be brought in with rodata. | |
cb87481e NP |
68 | */ |
69 | #ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION | |
70 | #define TEXT_MAIN .text .text.[0-9a-zA-Z_]* | |
52c8ee5b | 71 | #define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..LPBX* |
266ff2a8 NP |
72 | #define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]* |
73 | #define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]* | |
cb87481e | 74 | #define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* |
266ff2a8 | 75 | #define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]* |
cb87481e NP |
76 | #else |
77 | #define TEXT_MAIN .text | |
78 | #define DATA_MAIN .data | |
266ff2a8 NP |
79 | #define SDATA_MAIN .sdata |
80 | #define RODATA_MAIN .rodata | |
cb87481e | 81 | #define BSS_MAIN .bss |
266ff2a8 | 82 | #define SBSS_MAIN .sbss |
cb87481e NP |
83 | #endif |
84 | ||
07fca0e5 SR |
85 | /* |
86 | * Align to a 32 byte boundary equal to the | |
87 | * alignment gcc 4.5 uses for a struct | |
88 | */ | |
aab94339 DB |
89 | #define STRUCT_ALIGNMENT 32 |
90 | #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) | |
07fca0e5 | 91 | |
eb8f6890 SR |
92 | /* The actual configuration determine if the init/exit sections |
93 | * are handled as text/data or they can be discarded (which | |
94 | * often happens at runtime) | |
95 | */ | |
eb8f6890 SR |
96 | #ifdef CONFIG_HOTPLUG_CPU |
97 | #define CPU_KEEP(sec) *(.cpu##sec) | |
98 | #define CPU_DISCARD(sec) | |
99 | #else | |
100 | #define CPU_KEEP(sec) | |
101 | #define CPU_DISCARD(sec) *(.cpu##sec) | |
102 | #endif | |
103 | ||
1a3fb6d4 | 104 | #if defined(CONFIG_MEMORY_HOTPLUG) |
eb8f6890 SR |
105 | #define MEM_KEEP(sec) *(.mem##sec) |
106 | #define MEM_DISCARD(sec) | |
107 | #else | |
108 | #define MEM_KEEP(sec) | |
109 | #define MEM_DISCARD(sec) *(.mem##sec) | |
110 | #endif | |
111 | ||
8da3821b | 112 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
6ca63662 SS |
113 | #ifdef CC_USING_PATCHABLE_FUNCTION_ENTRY |
114 | #define MCOUNT_REC() . = ALIGN(8); \ | |
115 | __start_mcount_loc = .; \ | |
116 | KEEP(*(__patchable_function_entries)) \ | |
117 | __stop_mcount_loc = .; | |
118 | #else | |
4b3b4c5e | 119 | #define MCOUNT_REC() . = ALIGN(8); \ |
a6214385 | 120 | __start_mcount_loc = .; \ |
266ff2a8 | 121 | KEEP(*(__mcount_loc)) \ |
a6214385 | 122 | __stop_mcount_loc = .; |
6ca63662 | 123 | #endif |
8da3821b SR |
124 | #else |
125 | #define MCOUNT_REC() | |
126 | #endif | |
eb8f6890 | 127 | |
2ed84eeb | 128 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
a6214385 | 129 | #define LIKELY_PROFILE() __start_annotated_branch_profile = .; \ |
266ff2a8 | 130 | KEEP(*(_ftrace_annotated_branch)) \ |
a6214385 | 131 | __stop_annotated_branch_profile = .; |
1f0d69a9 SR |
132 | #else |
133 | #define LIKELY_PROFILE() | |
134 | #endif | |
135 | ||
2bcd521a | 136 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
a6214385 | 137 | #define BRANCH_PROFILE() __start_branch_profile = .; \ |
266ff2a8 | 138 | KEEP(*(_ftrace_branch)) \ |
a6214385 | 139 | __stop_branch_profile = .; |
2bcd521a SR |
140 | #else |
141 | #define BRANCH_PROFILE() | |
142 | #endif | |
143 | ||
376e2424 | 144 | #ifdef CONFIG_KPROBES |
69902c71 | 145 | #define KPROBE_BLACKLIST() . = ALIGN(8); \ |
a6214385 | 146 | __start_kprobe_blacklist = .; \ |
4b89b7f7 | 147 | KEEP(*(_kprobe_blacklist)) \ |
a6214385 | 148 | __stop_kprobe_blacklist = .; |
376e2424 MH |
149 | #else |
150 | #define KPROBE_BLACKLIST() | |
151 | #endif | |
152 | ||
540adea3 | 153 | #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
663faf9f | 154 | #define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \ |
a6214385 | 155 | __start_error_injection_whitelist = .; \ |
540adea3 | 156 | KEEP(*(_error_injection_whitelist)) \ |
a6214385 | 157 | __stop_error_injection_whitelist = .; |
92ace999 | 158 | #else |
540adea3 | 159 | #define ERROR_INJECT_WHITELIST() |
92ace999 JB |
160 | #endif |
161 | ||
5f77a88b | 162 | #ifdef CONFIG_EVENT_TRACING |
e4a9ea5e | 163 | #define FTRACE_EVENTS() . = ALIGN(8); \ |
a6214385 | 164 | __start_ftrace_events = .; \ |
4b89b7f7 | 165 | KEEP(*(_ftrace_events)) \ |
a6214385 MY |
166 | __stop_ftrace_events = .; \ |
167 | __start_ftrace_eval_maps = .; \ | |
02fd7f68 | 168 | KEEP(*(_ftrace_eval_map)) \ |
a6214385 | 169 | __stop_ftrace_eval_maps = .; |
b77e38aa SR |
170 | #else |
171 | #define FTRACE_EVENTS() | |
172 | #endif | |
173 | ||
1ba28e02 | 174 | #ifdef CONFIG_TRACING |
a6214385 | 175 | #define TRACE_PRINTKS() __start___trace_bprintk_fmt = .; \ |
4b89b7f7 | 176 | KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \ |
a6214385 MY |
177 | __stop___trace_bprintk_fmt = .; |
178 | #define TRACEPOINT_STR() __start___tracepoint_str = .; \ | |
4b89b7f7 | 179 | KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \ |
a6214385 | 180 | __stop___tracepoint_str = .; |
1ba28e02 LJ |
181 | #else |
182 | #define TRACE_PRINTKS() | |
102c9323 | 183 | #define TRACEPOINT_STR() |
1ba28e02 LJ |
184 | #endif |
185 | ||
bed1ffca | 186 | #ifdef CONFIG_FTRACE_SYSCALLS |
3d56e331 | 187 | #define TRACE_SYSCALLS() . = ALIGN(8); \ |
a6214385 | 188 | __start_syscalls_metadata = .; \ |
4b89b7f7 | 189 | KEEP(*(__syscalls_metadata)) \ |
a6214385 | 190 | __stop_syscalls_metadata = .; |
bed1ffca FW |
191 | #else |
192 | #define TRACE_SYSCALLS() | |
193 | #endif | |
194 | ||
c4f6699d AS |
195 | #ifdef CONFIG_BPF_EVENTS |
196 | #define BPF_RAW_TP() STRUCT_ALIGN(); \ | |
a6214385 | 197 | __start__bpf_raw_tp = .; \ |
c4f6699d | 198 | KEEP(*(__bpf_raw_tp_map)) \ |
a6214385 | 199 | __stop__bpf_raw_tp = .; |
c4f6699d AS |
200 | #else |
201 | #define BPF_RAW_TP() | |
202 | #endif | |
203 | ||
470ca0de | 204 | #ifdef CONFIG_SERIAL_EARLYCON |
dd709e72 | 205 | #define EARLYCON_TABLE() . = ALIGN(8); \ |
a6214385 | 206 | __earlycon_table = .; \ |
4b89b7f7 | 207 | KEEP(*(__earlycon_table)) \ |
a6214385 | 208 | __earlycon_table_end = .; |
470ca0de PH |
209 | #else |
210 | #define EARLYCON_TABLE() | |
211 | #endif | |
aab94339 | 212 | |
3ac946d1 KC |
213 | #ifdef CONFIG_SECURITY |
214 | #define LSM_TABLE() . = ALIGN(8); \ | |
215 | __start_lsm_info = .; \ | |
216 | KEEP(*(.lsm_info.init)) \ | |
217 | __end_lsm_info = .; | |
e6b1db98 MG |
218 | #define EARLY_LSM_TABLE() . = ALIGN(8); \ |
219 | __start_early_lsm_info = .; \ | |
220 | KEEP(*(.early_lsm_info.init)) \ | |
221 | __end_early_lsm_info = .; | |
3ac946d1 KC |
222 | #else |
223 | #define LSM_TABLE() | |
e6b1db98 | 224 | #define EARLY_LSM_TABLE() |
3ac946d1 KC |
225 | #endif |
226 | ||
06309288 RH |
227 | #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
228 | #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) | |
5ee02af1 | 229 | #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
06309288 RH |
230 | #define _OF_TABLE_0(name) |
231 | #define _OF_TABLE_1(name) \ | |
f6e916b8 | 232 | . = ALIGN(8); \ |
a6214385 | 233 | __##name##_of_table = .; \ |
4b89b7f7 NP |
234 | KEEP(*(__##name##_of_table)) \ |
235 | KEEP(*(__##name##_of_table_end)) | |
06309288 | 236 | |
bb0eb050 | 237 | #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) |
06309288 RH |
238 | #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
239 | #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) | |
240 | #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) | |
241 | #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) | |
449e056c | 242 | #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
6c3ff8b1 | 243 | |
e647b532 MZ |
244 | #ifdef CONFIG_ACPI |
245 | #define ACPI_PROBE_TABLE(name) \ | |
246 | . = ALIGN(8); \ | |
a6214385 | 247 | __##name##_acpi_probe_table = .; \ |
4b89b7f7 | 248 | KEEP(*(__##name##_acpi_probe_table)) \ |
a6214385 | 249 | __##name##_acpi_probe_table_end = .; |
e647b532 MZ |
250 | #else |
251 | #define ACPI_PROBE_TABLE(name) | |
252 | #endif | |
253 | ||
980af75e DL |
254 | #ifdef CONFIG_THERMAL |
255 | #define THERMAL_TABLE(name) \ | |
256 | . = ALIGN(8); \ | |
257 | __##name##_thermal_table = .; \ | |
258 | KEEP(*(__##name##_thermal_table)) \ | |
259 | __##name##_thermal_table_end = .; | |
260 | #else | |
261 | #define THERMAL_TABLE(name) | |
262 | #endif | |
263 | ||
aab94339 DB |
264 | #define KERNEL_DTB() \ |
265 | STRUCT_ALIGN(); \ | |
a6214385 | 266 | __dtb_start = .; \ |
4b89b7f7 | 267 | KEEP(*(.dtb.init.rodata)) \ |
a6214385 | 268 | __dtb_end = .; |
aab94339 | 269 | |
b67067f1 NP |
270 | /* |
271 | * .data section | |
b67067f1 | 272 | */ |
ca967258 | 273 | #define DATA_DATA \ |
129f6c48 | 274 | *(.xiptext) \ |
cb87481e | 275 | *(DATA_MAIN) \ |
312b1485 | 276 | *(.ref.data) \ |
d356c0b6 | 277 | *(.data..shared_aligned) /* percpu related */ \ |
266ff2a8 NP |
278 | MEM_KEEP(init.data*) \ |
279 | MEM_KEEP(exit.data*) \ | |
7ccaba53 | 280 | *(.data.unlikely) \ |
a6214385 | 281 | __start_once = .; \ |
b1fca27d | 282 | *(.data.once) \ |
a6214385 | 283 | __end_once = .; \ |
65498646 | 284 | STRUCT_ALIGN(); \ |
97e1c18e | 285 | *(__tracepoints) \ |
e9d376f0 JB |
286 | /* implement dynamic printk debug */ \ |
287 | . = ALIGN(8); \ | |
a6214385 | 288 | __start___verbose = .; \ |
4b89b7f7 | 289 | KEEP(*(__verbose)) \ |
a6214385 | 290 | __stop___verbose = .; \ |
2bcd521a | 291 | LIKELY_PROFILE() \ |
b77e38aa | 292 | BRANCH_PROFILE() \ |
102c9323 | 293 | TRACE_PRINTKS() \ |
c4f6699d | 294 | BPF_RAW_TP() \ |
102c9323 | 295 | TRACEPOINT_STR() |
ca967258 | 296 | |
ef53dae8 SR |
297 | /* |
298 | * Data section helpers | |
299 | */ | |
300 | #define NOSAVE_DATA \ | |
301 | . = ALIGN(PAGE_SIZE); \ | |
a6214385 | 302 | __nosave_begin = .; \ |
07b3bb1e | 303 | *(.data..nosave) \ |
ef53dae8 | 304 | . = ALIGN(PAGE_SIZE); \ |
a6214385 | 305 | __nosave_end = .; |
ef53dae8 SR |
306 | |
307 | #define PAGE_ALIGNED_DATA(page_align) \ | |
308 | . = ALIGN(page_align); \ | |
75b13483 | 309 | *(.data..page_aligned) |
ef53dae8 SR |
310 | |
311 | #define READ_MOSTLY_DATA(align) \ | |
312 | . = ALIGN(align); \ | |
8369744f SL |
313 | *(.data..read_mostly) \ |
314 | . = ALIGN(align); | |
ef53dae8 SR |
315 | |
316 | #define CACHELINE_ALIGNED_DATA(align) \ | |
317 | . = ALIGN(align); \ | |
4af57b78 | 318 | *(.data..cacheline_aligned) |
ef53dae8 | 319 | |
39a449d9 | 320 | #define INIT_TASK_DATA(align) \ |
ef53dae8 | 321 | . = ALIGN(align); \ |
a6214385 MY |
322 | __start_init_task = .; \ |
323 | init_thread_union = .; \ | |
324 | init_stack = .; \ | |
266ff2a8 NP |
325 | KEEP(*(.data..init_task)) \ |
326 | KEEP(*(.data..init_thread_info)) \ | |
a6214385 MY |
327 | . = __start_init_task + THREAD_SIZE; \ |
328 | __end_init_task = .; | |
ef53dae8 | 329 | |
e872267b AB |
330 | #define JUMP_TABLE_DATA \ |
331 | . = ALIGN(8); \ | |
332 | __start___jump_table = .; \ | |
333 | KEEP(*(__jump_table)) \ | |
334 | __stop___jump_table = .; | |
335 | ||
32fb2fc5 HC |
336 | /* |
337 | * Allow architectures to handle ro_after_init data on their | |
338 | * own by defining an empty RO_AFTER_INIT_DATA. | |
339 | */ | |
340 | #ifndef RO_AFTER_INIT_DATA | |
d7c19b06 | 341 | #define RO_AFTER_INIT_DATA \ |
a6214385 | 342 | __start_ro_after_init = .; \ |
d7c19b06 | 343 | *(.data..ro_after_init) \ |
e872267b | 344 | JUMP_TABLE_DATA \ |
a6214385 | 345 | __end_ro_after_init = .; |
32fb2fc5 HC |
346 | #endif |
347 | ||
ef53dae8 SR |
348 | /* |
349 | * Read only Data | |
350 | */ | |
351 | #define RO_DATA_SECTION(align) \ | |
4096b46f | 352 | . = ALIGN((align)); \ |
1da177e4 | 353 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
a6214385 | 354 | __start_rodata = .; \ |
1da177e4 | 355 | *(.rodata) *(.rodata.*) \ |
32fb2fc5 | 356 | RO_AFTER_INIT_DATA /* Read only after init */ \ |
65498646 | 357 | . = ALIGN(8); \ |
a6214385 | 358 | __start___tracepoints_ptrs = .; \ |
4b89b7f7 | 359 | KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \ |
a6214385 | 360 | __stop___tracepoints_ptrs = .; \ |
97e1c18e | 361 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
1da177e4 LT |
362 | } \ |
363 | \ | |
364 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ | |
365 | *(.rodata1) \ | |
366 | } \ | |
367 | \ | |
368 | /* PCI quirks */ \ | |
369 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ | |
a6214385 | 370 | __start_pci_fixups_early = .; \ |
4b89b7f7 | 371 | KEEP(*(.pci_fixup_early)) \ |
a6214385 MY |
372 | __end_pci_fixups_early = .; \ |
373 | __start_pci_fixups_header = .; \ | |
4b89b7f7 | 374 | KEEP(*(.pci_fixup_header)) \ |
a6214385 MY |
375 | __end_pci_fixups_header = .; \ |
376 | __start_pci_fixups_final = .; \ | |
4b89b7f7 | 377 | KEEP(*(.pci_fixup_final)) \ |
a6214385 MY |
378 | __end_pci_fixups_final = .; \ |
379 | __start_pci_fixups_enable = .; \ | |
4b89b7f7 | 380 | KEEP(*(.pci_fixup_enable)) \ |
a6214385 MY |
381 | __end_pci_fixups_enable = .; \ |
382 | __start_pci_fixups_resume = .; \ | |
4b89b7f7 | 383 | KEEP(*(.pci_fixup_resume)) \ |
a6214385 MY |
384 | __end_pci_fixups_resume = .; \ |
385 | __start_pci_fixups_resume_early = .; \ | |
4b89b7f7 | 386 | KEEP(*(.pci_fixup_resume_early)) \ |
a6214385 MY |
387 | __end_pci_fixups_resume_early = .; \ |
388 | __start_pci_fixups_suspend = .; \ | |
4b89b7f7 | 389 | KEEP(*(.pci_fixup_suspend)) \ |
a6214385 MY |
390 | __end_pci_fixups_suspend = .; \ |
391 | __start_pci_fixups_suspend_late = .; \ | |
4b89b7f7 | 392 | KEEP(*(.pci_fixup_suspend_late)) \ |
a6214385 | 393 | __end_pci_fixups_suspend_late = .; \ |
1da177e4 LT |
394 | } \ |
395 | \ | |
5658c769 DW |
396 | /* Built-in firmware blobs */ \ |
397 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ | |
a6214385 | 398 | __start_builtin_fw = .; \ |
4b89b7f7 | 399 | KEEP(*(.builtin_fw)) \ |
a6214385 | 400 | __end_builtin_fw = .; \ |
5658c769 DW |
401 | } \ |
402 | \ | |
63687a52 JB |
403 | TRACEDATA \ |
404 | \ | |
1da177e4 LT |
405 | /* Kernel symbol table: Normal symbols */ \ |
406 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ | |
a6214385 | 407 | __start___ksymtab = .; \ |
b67067f1 | 408 | KEEP(*(SORT(___ksymtab+*))) \ |
a6214385 | 409 | __stop___ksymtab = .; \ |
1da177e4 LT |
410 | } \ |
411 | \ | |
412 | /* Kernel symbol table: GPL-only symbols */ \ | |
413 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 414 | __start___ksymtab_gpl = .; \ |
b67067f1 | 415 | KEEP(*(SORT(___ksymtab_gpl+*))) \ |
a6214385 | 416 | __stop___ksymtab_gpl = .; \ |
1da177e4 LT |
417 | } \ |
418 | \ | |
f71d20e9 AV |
419 | /* Kernel symbol table: Normal unused symbols */ \ |
420 | __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ | |
a6214385 | 421 | __start___ksymtab_unused = .; \ |
b67067f1 | 422 | KEEP(*(SORT(___ksymtab_unused+*))) \ |
a6214385 | 423 | __stop___ksymtab_unused = .; \ |
f71d20e9 AV |
424 | } \ |
425 | \ | |
426 | /* Kernel symbol table: GPL-only unused symbols */ \ | |
427 | __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 428 | __start___ksymtab_unused_gpl = .; \ |
b67067f1 | 429 | KEEP(*(SORT(___ksymtab_unused_gpl+*))) \ |
a6214385 | 430 | __stop___ksymtab_unused_gpl = .; \ |
f71d20e9 AV |
431 | } \ |
432 | \ | |
9f28bb7e GKH |
433 | /* Kernel symbol table: GPL-future-only symbols */ \ |
434 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ | |
a6214385 | 435 | __start___ksymtab_gpl_future = .; \ |
b67067f1 | 436 | KEEP(*(SORT(___ksymtab_gpl_future+*))) \ |
a6214385 | 437 | __stop___ksymtab_gpl_future = .; \ |
9f28bb7e GKH |
438 | } \ |
439 | \ | |
1da177e4 LT |
440 | /* Kernel symbol table: Normal symbols */ \ |
441 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ | |
a6214385 | 442 | __start___kcrctab = .; \ |
b67067f1 | 443 | KEEP(*(SORT(___kcrctab+*))) \ |
a6214385 | 444 | __stop___kcrctab = .; \ |
1da177e4 LT |
445 | } \ |
446 | \ | |
447 | /* Kernel symbol table: GPL-only symbols */ \ | |
448 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 449 | __start___kcrctab_gpl = .; \ |
b67067f1 | 450 | KEEP(*(SORT(___kcrctab_gpl+*))) \ |
a6214385 | 451 | __stop___kcrctab_gpl = .; \ |
1da177e4 LT |
452 | } \ |
453 | \ | |
f71d20e9 AV |
454 | /* Kernel symbol table: Normal unused symbols */ \ |
455 | __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ | |
a6214385 | 456 | __start___kcrctab_unused = .; \ |
b67067f1 | 457 | KEEP(*(SORT(___kcrctab_unused+*))) \ |
a6214385 | 458 | __stop___kcrctab_unused = .; \ |
f71d20e9 AV |
459 | } \ |
460 | \ | |
461 | /* Kernel symbol table: GPL-only unused symbols */ \ | |
462 | __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ | |
a6214385 | 463 | __start___kcrctab_unused_gpl = .; \ |
b67067f1 | 464 | KEEP(*(SORT(___kcrctab_unused_gpl+*))) \ |
a6214385 | 465 | __stop___kcrctab_unused_gpl = .; \ |
f71d20e9 AV |
466 | } \ |
467 | \ | |
9f28bb7e GKH |
468 | /* Kernel symbol table: GPL-future-only symbols */ \ |
469 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ | |
a6214385 | 470 | __start___kcrctab_gpl_future = .; \ |
b67067f1 | 471 | KEEP(*(SORT(___kcrctab_gpl_future+*))) \ |
a6214385 | 472 | __stop___kcrctab_gpl_future = .; \ |
9f28bb7e GKH |
473 | } \ |
474 | \ | |
1da177e4 LT |
475 | /* Kernel symbol table: strings */ \ |
476 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ | |
4b89b7f7 | 477 | *(__ksymtab_strings) \ |
1da177e4 LT |
478 | } \ |
479 | \ | |
eb8f6890 SR |
480 | /* __*init sections */ \ |
481 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ | |
312b1485 | 482 | *(.ref.rodata) \ |
eb8f6890 SR |
483 | MEM_KEEP(init.rodata) \ |
484 | MEM_KEEP(exit.rodata) \ | |
485 | } \ | |
486 | \ | |
1da177e4 LT |
487 | /* Built-in module parameters. */ \ |
488 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ | |
a6214385 | 489 | __start___param = .; \ |
4b89b7f7 | 490 | KEEP(*(__param)) \ |
a6214385 | 491 | __stop___param = .; \ |
e94965ed DT |
492 | } \ |
493 | \ | |
494 | /* Built-in module versions. */ \ | |
495 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ | |
a6214385 | 496 | __start___modver = .; \ |
4b89b7f7 | 497 | KEEP(*(__modver)) \ |
a6214385 | 498 | __stop___modver = .; \ |
edeed305 | 499 | . = ALIGN((align)); \ |
a6214385 | 500 | __end_rodata = .; \ |
7583ddfd | 501 | } \ |
4096b46f SR |
502 | . = ALIGN((align)); |
503 | ||
ef53dae8 | 504 | /* RODATA & RO_DATA provided for backward compatibility. |
4096b46f | 505 | * All archs are supposed to use RO_DATA() */ |
ef53dae8 SR |
506 | #define RODATA RO_DATA_SECTION(4096) |
507 | #define RO_DATA(align) RO_DATA_SECTION(align) | |
1da177e4 | 508 | |
cb87481e NP |
509 | /* |
510 | * .text section. Map to function alignment to avoid address changes | |
0f4c4af0 | 511 | * during second ld run in second ld pass when generating System.map |
cb87481e NP |
512 | * |
513 | * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead | |
514 | * code elimination is enabled, so these sections should be converted | |
515 | * to use ".." first. | |
516 | */ | |
7664709b SR |
517 | #define TEXT_TEXT \ |
518 | ALIGN_FUNCTION(); \ | |
cb87481e | 519 | *(.text.hot TEXT_MAIN .text.fixup .text.unlikely) \ |
564c9cc8 | 520 | *(.text..refcount) \ |
312b1485 | 521 | *(.ref.text) \ |
266ff2a8 NP |
522 | MEM_KEEP(init.text*) \ |
523 | MEM_KEEP(exit.text*) \ | |
eb8f6890 | 524 | |
7664709b | 525 | |
6d30e3a8 SR |
526 | /* sched.text is aling to function alignment to secure we have same |
527 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 528 | #define SCHED_TEXT \ |
6d30e3a8 | 529 | ALIGN_FUNCTION(); \ |
a6214385 | 530 | __sched_text_start = .; \ |
1da177e4 | 531 | *(.sched.text) \ |
a6214385 | 532 | __sched_text_end = .; |
1da177e4 | 533 | |
6d30e3a8 SR |
534 | /* spinlock.text is aling to function alignment to secure we have same |
535 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 536 | #define LOCK_TEXT \ |
6d30e3a8 | 537 | ALIGN_FUNCTION(); \ |
a6214385 | 538 | __lock_text_start = .; \ |
1da177e4 | 539 | *(.spinlock.text) \ |
a6214385 | 540 | __lock_text_end = .; |
d0aaff97 | 541 | |
6727ad9e CM |
542 | #define CPUIDLE_TEXT \ |
543 | ALIGN_FUNCTION(); \ | |
a6214385 | 544 | __cpuidle_text_start = .; \ |
6727ad9e | 545 | *(.cpuidle.text) \ |
a6214385 | 546 | __cpuidle_text_end = .; |
6727ad9e | 547 | |
d0aaff97 PP |
548 | #define KPROBES_TEXT \ |
549 | ALIGN_FUNCTION(); \ | |
a6214385 | 550 | __kprobes_text_start = .; \ |
d0aaff97 | 551 | *(.kprobes.text) \ |
a6214385 | 552 | __kprobes_text_end = .; |
a7d0c210 | 553 | |
ea714547 JO |
554 | #define ENTRY_TEXT \ |
555 | ALIGN_FUNCTION(); \ | |
a6214385 | 556 | __entry_text_start = .; \ |
ea714547 | 557 | *(.entry.text) \ |
a6214385 | 558 | __entry_text_end = .; |
ea714547 | 559 | |
a0343e82 FW |
560 | #define IRQENTRY_TEXT \ |
561 | ALIGN_FUNCTION(); \ | |
a6214385 | 562 | __irqentry_text_start = .; \ |
a0343e82 | 563 | *(.irqentry.text) \ |
a6214385 | 564 | __irqentry_text_end = .; |
a0343e82 | 565 | |
be7635e7 AP |
566 | #define SOFTIRQENTRY_TEXT \ |
567 | ALIGN_FUNCTION(); \ | |
a6214385 | 568 | __softirqentry_text_start = .; \ |
be7635e7 | 569 | *(.softirqentry.text) \ |
a6214385 | 570 | __softirqentry_text_end = .; |
be7635e7 | 571 | |
37c514e3 | 572 | /* Section used for early init (in .S files) */ |
266ff2a8 | 573 | #define HEAD_TEXT KEEP(*(.head.text)) |
37c514e3 | 574 | |
7923f90f | 575 | #define HEAD_TEXT_SECTION \ |
ef53dae8 SR |
576 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
577 | HEAD_TEXT \ | |
578 | } | |
579 | ||
580 | /* | |
581 | * Exception table | |
582 | */ | |
583 | #define EXCEPTION_TABLE(align) \ | |
584 | . = ALIGN(align); \ | |
585 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ | |
a6214385 | 586 | __start___ex_table = .; \ |
4b89b7f7 | 587 | KEEP(*(__ex_table)) \ |
a6214385 | 588 | __stop___ex_table = .; \ |
ef53dae8 SR |
589 | } |
590 | ||
591 | /* | |
592 | * Init task | |
593 | */ | |
39a449d9 | 594 | #define INIT_TASK_DATA_SECTION(align) \ |
ef53dae8 | 595 | . = ALIGN(align); \ |
da5e37ef | 596 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
39a449d9 | 597 | INIT_TASK_DATA(align) \ |
ef53dae8 | 598 | } |
37c514e3 | 599 | |
b99b87f7 | 600 | #ifdef CONFIG_CONSTRUCTORS |
2a2325e6 | 601 | #define KERNEL_CTORS() . = ALIGN(8); \ |
a6214385 | 602 | __ctors_start = .; \ |
4b89b7f7 NP |
603 | KEEP(*(.ctors)) \ |
604 | KEEP(*(SORT(.init_array.*))) \ | |
605 | KEEP(*(.init_array)) \ | |
a6214385 | 606 | __ctors_end = .; |
b99b87f7 PO |
607 | #else |
608 | #define KERNEL_CTORS() | |
609 | #endif | |
610 | ||
01ba2bdc | 611 | /* init and exit section handling */ |
eb8f6890 | 612 | #define INIT_DATA \ |
b67067f1 | 613 | KEEP(*(SORT(___kentry+*))) \ |
266ff2a8 NP |
614 | *(.init.data init.data.*) \ |
615 | MEM_DISCARD(init.data*) \ | |
b99b87f7 | 616 | KERNEL_CTORS() \ |
4b3b4c5e | 617 | MCOUNT_REC() \ |
266ff2a8 | 618 | *(.init.rodata .init.rodata.*) \ |
e4a9ea5e | 619 | FTRACE_EVENTS() \ |
3d56e331 | 620 | TRACE_SYSCALLS() \ |
376e2424 | 621 | KPROBE_BLACKLIST() \ |
540adea3 | 622 | ERROR_INJECT_WHITELIST() \ |
aab94339 | 623 | MEM_DISCARD(init.rodata) \ |
f2f6c255 | 624 | CLK_OF_TABLES() \ |
f618c470 | 625 | RESERVEDMEM_OF_TABLES() \ |
2fcc112a | 626 | TIMER_OF_TABLES() \ |
6c3ff8b1 | 627 | CPU_METHOD_OF_TABLES() \ |
449e056c | 628 | CPUIDLE_METHOD_OF_TABLES() \ |
f6e916b8 | 629 | KERNEL_DTB() \ |
b0b6abd3 | 630 | IRQCHIP_OF_MATCH_TABLE() \ |
46e589a3 | 631 | ACPI_PROBE_TABLE(irqchip) \ |
2fcc112a | 632 | ACPI_PROBE_TABLE(timer) \ |
980af75e | 633 | THERMAL_TABLE(governor) \ |
3ac946d1 | 634 | EARLYCON_TABLE() \ |
e6b1db98 MG |
635 | LSM_TABLE() \ |
636 | EARLY_LSM_TABLE() | |
eb8f6890 SR |
637 | |
638 | #define INIT_TEXT \ | |
266ff2a8 | 639 | *(.init.text .init.text.*) \ |
e41f501d | 640 | *(.text.startup) \ |
266ff2a8 | 641 | MEM_DISCARD(init.text*) |
eb8f6890 SR |
642 | |
643 | #define EXIT_DATA \ | |
266ff2a8 | 644 | *(.exit.data .exit.data.*) \ |
8dcf86ca PO |
645 | *(.fini_array .fini_array.*) \ |
646 | *(.dtors .dtors.*) \ | |
266ff2a8 NP |
647 | MEM_DISCARD(exit.data*) \ |
648 | MEM_DISCARD(exit.rodata*) | |
01ba2bdc | 649 | |
eb8f6890 SR |
650 | #define EXIT_TEXT \ |
651 | *(.exit.text) \ | |
e41f501d | 652 | *(.text.exit) \ |
eb8f6890 | 653 | MEM_DISCARD(exit.text) |
01ba2bdc | 654 | |
7923f90f SR |
655 | #define EXIT_CALL \ |
656 | *(.exitcall.exit) | |
657 | ||
ef53dae8 SR |
658 | /* |
659 | * bss (Block Started by Symbol) - uninitialized data | |
660 | * zeroed during startup | |
661 | */ | |
04e448d9 TA |
662 | #define SBSS(sbss_align) \ |
663 | . = ALIGN(sbss_align); \ | |
ef53dae8 | 664 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
83a092cf | 665 | *(.dynsbss) \ |
266ff2a8 | 666 | *(SBSS_MAIN) \ |
ef53dae8 SR |
667 | *(.scommon) \ |
668 | } | |
669 | ||
c87728ca DD |
670 | /* |
671 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra | |
672 | * sections to the front of bss. | |
673 | */ | |
674 | #ifndef BSS_FIRST_SECTIONS | |
675 | #define BSS_FIRST_SECTIONS | |
676 | #endif | |
677 | ||
ef53dae8 SR |
678 | #define BSS(bss_align) \ |
679 | . = ALIGN(bss_align); \ | |
680 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ | |
c87728ca | 681 | BSS_FIRST_SECTIONS \ |
7c74df07 | 682 | *(.bss..page_aligned) \ |
ef53dae8 | 683 | *(.dynbss) \ |
cb87481e | 684 | *(BSS_MAIN) \ |
ef53dae8 | 685 | *(COMMON) \ |
ef53dae8 SR |
686 | } |
687 | ||
688 | /* | |
689 | * DWARF debug sections. | |
690 | * Symbols in the DWARF debugging sections are relative to | |
691 | * the beginning of the section so we begin them at 0. | |
692 | */ | |
a7d0c210 PBG |
693 | #define DWARF_DEBUG \ |
694 | /* DWARF 1 */ \ | |
695 | .debug 0 : { *(.debug) } \ | |
696 | .line 0 : { *(.line) } \ | |
697 | /* GNU DWARF 1 extensions */ \ | |
698 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ | |
699 | .debug_sfnames 0 : { *(.debug_sfnames) } \ | |
700 | /* DWARF 1.1 and DWARF 2 */ \ | |
701 | .debug_aranges 0 : { *(.debug_aranges) } \ | |
702 | .debug_pubnames 0 : { *(.debug_pubnames) } \ | |
703 | /* DWARF 2 */ \ | |
704 | .debug_info 0 : { *(.debug_info \ | |
705 | .gnu.linkonce.wi.*) } \ | |
706 | .debug_abbrev 0 : { *(.debug_abbrev) } \ | |
707 | .debug_line 0 : { *(.debug_line) } \ | |
708 | .debug_frame 0 : { *(.debug_frame) } \ | |
709 | .debug_str 0 : { *(.debug_str) } \ | |
710 | .debug_loc 0 : { *(.debug_loc) } \ | |
711 | .debug_macinfo 0 : { *(.debug_macinfo) } \ | |
83a092cf NP |
712 | .debug_pubtypes 0 : { *(.debug_pubtypes) } \ |
713 | /* DWARF 3 */ \ | |
714 | .debug_ranges 0 : { *(.debug_ranges) } \ | |
a7d0c210 PBG |
715 | /* SGI/MIPS DWARF 2 extensions */ \ |
716 | .debug_weaknames 0 : { *(.debug_weaknames) } \ | |
717 | .debug_funcnames 0 : { *(.debug_funcnames) } \ | |
718 | .debug_typenames 0 : { *(.debug_typenames) } \ | |
719 | .debug_varnames 0 : { *(.debug_varnames) } \ | |
83a092cf NP |
720 | /* GNU DWARF 2 extensions */ \ |
721 | .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \ | |
722 | .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \ | |
723 | /* DWARF 4 */ \ | |
724 | .debug_types 0 : { *(.debug_types) } \ | |
725 | /* DWARF 5 */ \ | |
726 | .debug_macro 0 : { *(.debug_macro) } \ | |
727 | .debug_addr 0 : { *(.debug_addr) } | |
a7d0c210 PBG |
728 | |
729 | /* Stabs debugging sections. */ | |
730 | #define STABS_DEBUG \ | |
731 | .stab 0 : { *(.stab) } \ | |
732 | .stabstr 0 : { *(.stabstr) } \ | |
733 | .stab.excl 0 : { *(.stab.excl) } \ | |
734 | .stab.exclstr 0 : { *(.stab.exclstr) } \ | |
735 | .stab.index 0 : { *(.stab.index) } \ | |
736 | .stab.indexstr 0 : { *(.stab.indexstr) } \ | |
737 | .comment 0 : { *(.comment) } | |
9c9b8b38 | 738 | |
6360b1fb | 739 | #ifdef CONFIG_GENERIC_BUG |
7664c5a1 JF |
740 | #define BUG_TABLE \ |
741 | . = ALIGN(8); \ | |
742 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ | |
a6214385 | 743 | __start___bug_table = .; \ |
4b89b7f7 | 744 | KEEP(*(__bug_table)) \ |
a6214385 | 745 | __stop___bug_table = .; \ |
7664c5a1 | 746 | } |
6360b1fb JB |
747 | #else |
748 | #define BUG_TABLE | |
749 | #endif | |
7664c5a1 | 750 | |
11af8474 | 751 | #ifdef CONFIG_UNWINDER_ORC |
ee9f8fce JP |
752 | #define ORC_UNWIND_TABLE \ |
753 | . = ALIGN(4); \ | |
754 | .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \ | |
a6214385 | 755 | __start_orc_unwind_ip = .; \ |
ee9f8fce | 756 | KEEP(*(.orc_unwind_ip)) \ |
a6214385 | 757 | __stop_orc_unwind_ip = .; \ |
ee9f8fce | 758 | } \ |
f76a16ad | 759 | . = ALIGN(2); \ |
ee9f8fce | 760 | .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ |
a6214385 | 761 | __start_orc_unwind = .; \ |
ee9f8fce | 762 | KEEP(*(.orc_unwind)) \ |
a6214385 | 763 | __stop_orc_unwind = .; \ |
ee9f8fce JP |
764 | } \ |
765 | . = ALIGN(4); \ | |
766 | .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \ | |
a6214385 | 767 | orc_lookup = .; \ |
ee9f8fce JP |
768 | . += (((SIZEOF(.text) + LOOKUP_BLOCK_SIZE - 1) / \ |
769 | LOOKUP_BLOCK_SIZE) + 1) * 4; \ | |
a6214385 | 770 | orc_lookup_end = .; \ |
ee9f8fce JP |
771 | } |
772 | #else | |
773 | #define ORC_UNWIND_TABLE | |
774 | #endif | |
775 | ||
63687a52 JB |
776 | #ifdef CONFIG_PM_TRACE |
777 | #define TRACEDATA \ | |
778 | . = ALIGN(4); \ | |
779 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ | |
a6214385 | 780 | __tracedata_start = .; \ |
4b89b7f7 | 781 | KEEP(*(.tracedata)) \ |
a6214385 | 782 | __tracedata_end = .; \ |
63687a52 JB |
783 | } |
784 | #else | |
785 | #define TRACEDATA | |
786 | #endif | |
787 | ||
9c9b8b38 | 788 | #define NOTES \ |
cbe87121 | 789 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
a6214385 | 790 | __start_notes = .; \ |
266ff2a8 | 791 | KEEP(*(.note.*)) \ |
a6214385 | 792 | __stop_notes = .; \ |
cbe87121 | 793 | } |
61ce1efe | 794 | |
ef53dae8 SR |
795 | #define INIT_SETUP(initsetup_align) \ |
796 | . = ALIGN(initsetup_align); \ | |
a6214385 | 797 | __setup_start = .; \ |
4b89b7f7 | 798 | KEEP(*(.init.setup)) \ |
a6214385 | 799 | __setup_end = .; |
ef53dae8 | 800 | |
026cee00 | 801 | #define INIT_CALLS_LEVEL(level) \ |
a6214385 | 802 | __initcall##level##_start = .; \ |
b67067f1 NP |
803 | KEEP(*(.initcall##level##.init)) \ |
804 | KEEP(*(.initcall##level##s.init)) \ | |
61ce1efe | 805 | |
ef53dae8 | 806 | #define INIT_CALLS \ |
a6214385 | 807 | __initcall_start = .; \ |
b67067f1 | 808 | KEEP(*(.initcallearly.init)) \ |
026cee00 PM |
809 | INIT_CALLS_LEVEL(0) \ |
810 | INIT_CALLS_LEVEL(1) \ | |
811 | INIT_CALLS_LEVEL(2) \ | |
812 | INIT_CALLS_LEVEL(3) \ | |
813 | INIT_CALLS_LEVEL(4) \ | |
814 | INIT_CALLS_LEVEL(5) \ | |
815 | INIT_CALLS_LEVEL(rootfs) \ | |
816 | INIT_CALLS_LEVEL(6) \ | |
817 | INIT_CALLS_LEVEL(7) \ | |
a6214385 | 818 | __initcall_end = .; |
ef53dae8 SR |
819 | |
820 | #define CON_INITCALL \ | |
a6214385 | 821 | __con_initcall_start = .; \ |
b67067f1 | 822 | KEEP(*(.con_initcall.init)) \ |
a6214385 | 823 | __con_initcall_end = .; |
ef53dae8 | 824 | |
ef53dae8 SR |
825 | #ifdef CONFIG_BLK_DEV_INITRD |
826 | #define INIT_RAM_FS \ | |
d8826262 | 827 | . = ALIGN(4); \ |
a6214385 | 828 | __initramfs_start = .; \ |
b67067f1 | 829 | KEEP(*(.init.ramfs)) \ |
ffe8018c | 830 | . = ALIGN(8); \ |
b67067f1 | 831 | KEEP(*(.init.ramfs.info)) |
ef53dae8 | 832 | #else |
eadfe219 | 833 | #define INIT_RAM_FS |
ef53dae8 SR |
834 | #endif |
835 | ||
ac26963a BS |
836 | /* |
837 | * Memory encryption operates on a page basis. Since we need to clear | |
838 | * the memory encryption mask for this section, it needs to be aligned | |
839 | * on a page boundary and be a page-size multiple in length. | |
840 | * | |
841 | * Note: We use a separate section so that only this section gets | |
842 | * decrypted to avoid exposing more than we wish. | |
843 | */ | |
844 | #ifdef CONFIG_AMD_MEM_ENCRYPT | |
845 | #define PERCPU_DECRYPTED_SECTION \ | |
846 | . = ALIGN(PAGE_SIZE); \ | |
847 | *(.data..percpu..decrypted) \ | |
848 | . = ALIGN(PAGE_SIZE); | |
849 | #else | |
850 | #define PERCPU_DECRYPTED_SECTION | |
851 | #endif | |
852 | ||
853 | ||
023bf6f1 TH |
854 | /* |
855 | * Default discarded sections. | |
856 | * | |
857 | * Some archs want to discard exit text/data at runtime rather than | |
858 | * link time due to cross-section references such as alt instructions, | |
859 | * bug table, eh_frame, etc. DISCARDS must be the last of output | |
860 | * section definitions so that such archs put those in earlier section | |
861 | * definitions. | |
862 | */ | |
405d967d TH |
863 | #define DISCARDS \ |
864 | /DISCARD/ : { \ | |
865 | EXIT_TEXT \ | |
866 | EXIT_DATA \ | |
023bf6f1 | 867 | EXIT_CALL \ |
405d967d | 868 | *(.discard) \ |
c7f52cdc | 869 | *(.discard.*) \ |
898490c0 | 870 | *(.modinfo) \ |
405d967d TH |
871 | } |
872 | ||
6ea0c34d MF |
873 | /** |
874 | * PERCPU_INPUT - the percpu input sections | |
875 | * @cacheline: cacheline size | |
876 | * | |
877 | * The core percpu section names and core symbols which do not rely | |
878 | * directly upon load addresses. | |
879 | * | |
880 | * @cacheline is used to align subsections to avoid false cacheline | |
881 | * sharing between subsections for different purposes. | |
882 | */ | |
883 | #define PERCPU_INPUT(cacheline) \ | |
a6214385 | 884 | __per_cpu_start = .; \ |
6ea0c34d MF |
885 | *(.data..percpu..first) \ |
886 | . = ALIGN(PAGE_SIZE); \ | |
887 | *(.data..percpu..page_aligned) \ | |
888 | . = ALIGN(cacheline); \ | |
330d2822 | 889 | *(.data..percpu..read_mostly) \ |
6ea0c34d MF |
890 | . = ALIGN(cacheline); \ |
891 | *(.data..percpu) \ | |
892 | *(.data..percpu..shared_aligned) \ | |
ac26963a | 893 | PERCPU_DECRYPTED_SECTION \ |
a6214385 | 894 | __per_cpu_end = .; |
6ea0c34d | 895 | |
3e5d8f97 | 896 | /** |
6b7c38d5 | 897 | * PERCPU_VADDR - define output section for percpu area |
19df0c2f | 898 | * @cacheline: cacheline size |
3e5d8f97 TH |
899 | * @vaddr: explicit base address (optional) |
900 | * @phdr: destination PHDR (optional) | |
901 | * | |
19df0c2f TH |
902 | * Macro which expands to output section for percpu area. |
903 | * | |
904 | * @cacheline is used to align subsections to avoid false cacheline | |
905 | * sharing between subsections for different purposes. | |
906 | * | |
907 | * If @vaddr is not blank, it specifies explicit base address and all | |
908 | * percpu symbols will be offset from the given address. If blank, | |
909 | * @vaddr always equals @laddr + LOAD_OFFSET. | |
3e5d8f97 TH |
910 | * |
911 | * @phdr defines the output PHDR to use if not blank. Be warned that | |
912 | * output PHDR is sticky. If @phdr is specified, the next output | |
913 | * section in the linker script will go there too. @phdr should have | |
914 | * a leading colon. | |
915 | * | |
3ac6cffe TH |
916 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
917 | * If there is no need to put the percpu section at a predetermined | |
0415b00d | 918 | * address, use PERCPU_SECTION. |
3e5d8f97 | 919 | */ |
19df0c2f | 920 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
a6214385 MY |
921 | __per_cpu_load = .; \ |
922 | .data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) { \ | |
6ea0c34d | 923 | PERCPU_INPUT(cacheline) \ |
6b7c38d5 | 924 | } phdr \ |
a6214385 | 925 | . = __per_cpu_load + SIZEOF(.data..percpu); |
3e5d8f97 TH |
926 | |
927 | /** | |
0415b00d | 928 | * PERCPU_SECTION - define output section for percpu area, simple version |
19df0c2f | 929 | * @cacheline: cacheline size |
3e5d8f97 | 930 | * |
0415b00d TH |
931 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
932 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and | |
3e5d8f97 | 933 | * __per_cpu_start will be identical. |
3ac6cffe | 934 | * |
0415b00d | 935 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
19df0c2f TH |
936 | * except that __per_cpu_load is defined as a relative symbol against |
937 | * .data..percpu which is required for relocatable x86_32 configuration. | |
3e5d8f97 | 938 | */ |
0415b00d TH |
939 | #define PERCPU_SECTION(cacheline) \ |
940 | . = ALIGN(PAGE_SIZE); \ | |
3d9a854c | 941 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
a6214385 | 942 | __per_cpu_load = .; \ |
6ea0c34d | 943 | PERCPU_INPUT(cacheline) \ |
3ac6cffe | 944 | } |
ef53dae8 SR |
945 | |
946 | ||
947 | /* | |
948 | * Definition of the high level *_SECTION macros | |
949 | * They will fit only a subset of the architectures | |
950 | */ | |
951 | ||
952 | ||
953 | /* | |
954 | * Writeable data. | |
955 | * All sections are combined in a single .data section. | |
956 | * The sections following CONSTRUCTORS are arranged so their | |
957 | * typical alignment matches. | |
958 | * A cacheline is typical/always less than a PAGE_SIZE so | |
959 | * the sections that has this restriction (or similar) | |
960 | * is located before the ones requiring PAGE_SIZE alignment. | |
961 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which | |
25985edc | 962 | * matches the requirement of PAGE_ALIGNED_DATA. |
ef53dae8 | 963 | * |
7923f90f | 964 | * use 0 as page_align if page_aligned data is not used */ |
73f1d939 | 965 | #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ |
ef53dae8 SR |
966 | . = ALIGN(PAGE_SIZE); \ |
967 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ | |
39a449d9 | 968 | INIT_TASK_DATA(inittask) \ |
1b208622 TA |
969 | NOSAVE_DATA \ |
970 | PAGE_ALIGNED_DATA(pagealigned) \ | |
ef53dae8 SR |
971 | CACHELINE_ALIGNED_DATA(cacheline) \ |
972 | READ_MOSTLY_DATA(cacheline) \ | |
973 | DATA_DATA \ | |
974 | CONSTRUCTORS \ | |
19d43626 | 975 | } \ |
ee9f8fce | 976 | BUG_TABLE \ |
ef53dae8 SR |
977 | |
978 | #define INIT_TEXT_SECTION(inittext_align) \ | |
979 | . = ALIGN(inittext_align); \ | |
980 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ | |
a6214385 | 981 | _sinittext = .; \ |
ef53dae8 | 982 | INIT_TEXT \ |
a6214385 | 983 | _einittext = .; \ |
ef53dae8 SR |
984 | } |
985 | ||
986 | #define INIT_DATA_SECTION(initsetup_align) \ | |
987 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ | |
988 | INIT_DATA \ | |
989 | INIT_SETUP(initsetup_align) \ | |
990 | INIT_CALLS \ | |
991 | CON_INITCALL \ | |
ef53dae8 SR |
992 | INIT_RAM_FS \ |
993 | } | |
994 | ||
04e448d9 TA |
995 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
996 | . = ALIGN(sbss_align); \ | |
a6214385 | 997 | __bss_start = .; \ |
04e448d9 | 998 | SBSS(sbss_align) \ |
ef53dae8 | 999 | BSS(bss_align) \ |
04e448d9 | 1000 | . = ALIGN(stop_align); \ |
a6214385 | 1001 | __bss_stop = .; |