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 = .; | |
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 | ||
b92021b0 | 57 | #include <linux/export.h> |
1da177e4 | 58 | |
6d30e3a8 SR |
59 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
60 | #define ALIGN_FUNCTION() . = ALIGN(8) | |
61 | ||
cb87481e NP |
62 | /* |
63 | * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which | |
64 | * generates .data.identifier sections, which need to be pulled in with | |
65 | * .data. We don't want to pull in .data..other sections, which Linux | |
66 | * has defined. Same for text and bss. | |
67 | */ | |
68 | #ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION | |
69 | #define TEXT_MAIN .text .text.[0-9a-zA-Z_]* | |
70 | #define DATA_MAIN .data .data.[0-9a-zA-Z_]* | |
71 | #define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* | |
72 | #else | |
73 | #define TEXT_MAIN .text | |
74 | #define DATA_MAIN .data | |
75 | #define BSS_MAIN .bss | |
76 | #endif | |
77 | ||
07fca0e5 SR |
78 | /* |
79 | * Align to a 32 byte boundary equal to the | |
80 | * alignment gcc 4.5 uses for a struct | |
81 | */ | |
aab94339 DB |
82 | #define STRUCT_ALIGNMENT 32 |
83 | #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) | |
07fca0e5 | 84 | |
eb8f6890 SR |
85 | /* The actual configuration determine if the init/exit sections |
86 | * are handled as text/data or they can be discarded (which | |
87 | * often happens at runtime) | |
88 | */ | |
eb8f6890 SR |
89 | #ifdef CONFIG_HOTPLUG_CPU |
90 | #define CPU_KEEP(sec) *(.cpu##sec) | |
91 | #define CPU_DISCARD(sec) | |
92 | #else | |
93 | #define CPU_KEEP(sec) | |
94 | #define CPU_DISCARD(sec) *(.cpu##sec) | |
95 | #endif | |
96 | ||
1a3fb6d4 | 97 | #if defined(CONFIG_MEMORY_HOTPLUG) |
eb8f6890 SR |
98 | #define MEM_KEEP(sec) *(.mem##sec) |
99 | #define MEM_DISCARD(sec) | |
100 | #else | |
101 | #define MEM_KEEP(sec) | |
102 | #define MEM_DISCARD(sec) *(.mem##sec) | |
103 | #endif | |
104 | ||
8da3821b | 105 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
4b3b4c5e JR |
106 | #define MCOUNT_REC() . = ALIGN(8); \ |
107 | VMLINUX_SYMBOL(__start_mcount_loc) = .; \ | |
8da3821b SR |
108 | *(__mcount_loc) \ |
109 | VMLINUX_SYMBOL(__stop_mcount_loc) = .; | |
110 | #else | |
111 | #define MCOUNT_REC() | |
112 | #endif | |
eb8f6890 | 113 | |
2ed84eeb | 114 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
45b79749 SR |
115 | #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ |
116 | *(_ftrace_annotated_branch) \ | |
117 | VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; | |
1f0d69a9 SR |
118 | #else |
119 | #define LIKELY_PROFILE() | |
120 | #endif | |
121 | ||
2bcd521a SR |
122 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
123 | #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ | |
124 | *(_ftrace_branch) \ | |
125 | VMLINUX_SYMBOL(__stop_branch_profile) = .; | |
126 | #else | |
127 | #define BRANCH_PROFILE() | |
128 | #endif | |
129 | ||
376e2424 | 130 | #ifdef CONFIG_KPROBES |
69902c71 VG |
131 | #define KPROBE_BLACKLIST() . = ALIGN(8); \ |
132 | VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \ | |
4b89b7f7 | 133 | KEEP(*(_kprobe_blacklist)) \ |
376e2424 MH |
134 | VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .; |
135 | #else | |
136 | #define KPROBE_BLACKLIST() | |
137 | #endif | |
138 | ||
540adea3 | 139 | #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
663faf9f | 140 | #define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \ |
540adea3 MH |
141 | VMLINUX_SYMBOL(__start_error_injection_whitelist) = .;\ |
142 | KEEP(*(_error_injection_whitelist)) \ | |
143 | VMLINUX_SYMBOL(__stop_error_injection_whitelist) = .; | |
92ace999 | 144 | #else |
540adea3 | 145 | #define ERROR_INJECT_WHITELIST() |
92ace999 JB |
146 | #endif |
147 | ||
5f77a88b | 148 | #ifdef CONFIG_EVENT_TRACING |
e4a9ea5e SR |
149 | #define FTRACE_EVENTS() . = ALIGN(8); \ |
150 | VMLINUX_SYMBOL(__start_ftrace_events) = .; \ | |
4b89b7f7 | 151 | KEEP(*(_ftrace_events)) \ |
0c564a53 | 152 | VMLINUX_SYMBOL(__stop_ftrace_events) = .; \ |
02fd7f68 JL |
153 | VMLINUX_SYMBOL(__start_ftrace_eval_maps) = .; \ |
154 | KEEP(*(_ftrace_eval_map)) \ | |
155 | VMLINUX_SYMBOL(__stop_ftrace_eval_maps) = .; | |
b77e38aa SR |
156 | #else |
157 | #define FTRACE_EVENTS() | |
158 | #endif | |
159 | ||
1ba28e02 LJ |
160 | #ifdef CONFIG_TRACING |
161 | #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ | |
4b89b7f7 | 162 | KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \ |
1ba28e02 | 163 | VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; |
102c9323 | 164 | #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \ |
4b89b7f7 | 165 | KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \ |
102c9323 | 166 | VMLINUX_SYMBOL(__stop___tracepoint_str) = .; |
1ba28e02 LJ |
167 | #else |
168 | #define TRACE_PRINTKS() | |
102c9323 | 169 | #define TRACEPOINT_STR() |
1ba28e02 LJ |
170 | #endif |
171 | ||
bed1ffca | 172 | #ifdef CONFIG_FTRACE_SYSCALLS |
3d56e331 SR |
173 | #define TRACE_SYSCALLS() . = ALIGN(8); \ |
174 | VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ | |
4b89b7f7 | 175 | KEEP(*(__syscalls_metadata)) \ |
bed1ffca FW |
176 | VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; |
177 | #else | |
178 | #define TRACE_SYSCALLS() | |
179 | #endif | |
180 | ||
c4f6699d AS |
181 | #ifdef CONFIG_BPF_EVENTS |
182 | #define BPF_RAW_TP() STRUCT_ALIGN(); \ | |
183 | VMLINUX_SYMBOL(__start__bpf_raw_tp) = .; \ | |
184 | KEEP(*(__bpf_raw_tp_map)) \ | |
185 | VMLINUX_SYMBOL(__stop__bpf_raw_tp) = .; | |
186 | #else | |
187 | #define BPF_RAW_TP() | |
188 | #endif | |
189 | ||
470ca0de | 190 | #ifdef CONFIG_SERIAL_EARLYCON |
99492c39 | 191 | #define EARLYCON_TABLE() STRUCT_ALIGN(); \ |
470ca0de | 192 | VMLINUX_SYMBOL(__earlycon_table) = .; \ |
4b89b7f7 | 193 | KEEP(*(__earlycon_table)) \ |
2eaa7909 | 194 | VMLINUX_SYMBOL(__earlycon_table_end) = .; |
470ca0de PH |
195 | #else |
196 | #define EARLYCON_TABLE() | |
197 | #endif | |
aab94339 | 198 | |
06309288 RH |
199 | #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
200 | #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) | |
5ee02af1 | 201 | #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
06309288 RH |
202 | #define _OF_TABLE_0(name) |
203 | #define _OF_TABLE_1(name) \ | |
f6e916b8 | 204 | . = ALIGN(8); \ |
06309288 | 205 | VMLINUX_SYMBOL(__##name##_of_table) = .; \ |
4b89b7f7 NP |
206 | KEEP(*(__##name##_of_table)) \ |
207 | KEEP(*(__##name##_of_table_end)) | |
06309288 | 208 | |
bb0eb050 | 209 | #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) |
06309288 RH |
210 | #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
211 | #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) | |
1cd076bf | 212 | #define IOMMU_OF_TABLES() OF_TABLE(CONFIG_OF_IOMMU, iommu) |
06309288 RH |
213 | #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) |
214 | #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) | |
449e056c | 215 | #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
6c3ff8b1 | 216 | |
e647b532 MZ |
217 | #ifdef CONFIG_ACPI |
218 | #define ACPI_PROBE_TABLE(name) \ | |
219 | . = ALIGN(8); \ | |
220 | VMLINUX_SYMBOL(__##name##_acpi_probe_table) = .; \ | |
4b89b7f7 | 221 | KEEP(*(__##name##_acpi_probe_table)) \ |
e647b532 MZ |
222 | VMLINUX_SYMBOL(__##name##_acpi_probe_table_end) = .; |
223 | #else | |
224 | #define ACPI_PROBE_TABLE(name) | |
225 | #endif | |
226 | ||
aab94339 DB |
227 | #define KERNEL_DTB() \ |
228 | STRUCT_ALIGN(); \ | |
229 | VMLINUX_SYMBOL(__dtb_start) = .; \ | |
4b89b7f7 | 230 | KEEP(*(.dtb.init.rodata)) \ |
aab94339 DB |
231 | VMLINUX_SYMBOL(__dtb_end) = .; |
232 | ||
b67067f1 NP |
233 | /* |
234 | * .data section | |
b67067f1 | 235 | */ |
ca967258 | 236 | #define DATA_DATA \ |
129f6c48 | 237 | *(.xiptext) \ |
cb87481e | 238 | *(DATA_MAIN) \ |
312b1485 | 239 | *(.ref.data) \ |
d356c0b6 | 240 | *(.data..shared_aligned) /* percpu related */ \ |
eb8f6890 SR |
241 | MEM_KEEP(init.data) \ |
242 | MEM_KEEP(exit.data) \ | |
7ccaba53 | 243 | *(.data.unlikely) \ |
b1fca27d AK |
244 | VMLINUX_SYMBOL(__start_once) = .; \ |
245 | *(.data.once) \ | |
246 | VMLINUX_SYMBOL(__end_once) = .; \ | |
65498646 | 247 | STRUCT_ALIGN(); \ |
97e1c18e | 248 | *(__tracepoints) \ |
e9d376f0 | 249 | /* implement dynamic printk debug */ \ |
d430d3d7 JB |
250 | . = ALIGN(8); \ |
251 | VMLINUX_SYMBOL(__start___jump_table) = .; \ | |
4b89b7f7 | 252 | KEEP(*(__jump_table)) \ |
d430d3d7 | 253 | VMLINUX_SYMBOL(__stop___jump_table) = .; \ |
e9d376f0 JB |
254 | . = ALIGN(8); \ |
255 | VMLINUX_SYMBOL(__start___verbose) = .; \ | |
4b89b7f7 | 256 | KEEP(*(__verbose)) \ |
e9d376f0 | 257 | VMLINUX_SYMBOL(__stop___verbose) = .; \ |
2bcd521a | 258 | LIKELY_PROFILE() \ |
b77e38aa | 259 | BRANCH_PROFILE() \ |
102c9323 | 260 | TRACE_PRINTKS() \ |
c4f6699d | 261 | BPF_RAW_TP() \ |
102c9323 | 262 | TRACEPOINT_STR() |
ca967258 | 263 | |
ef53dae8 SR |
264 | /* |
265 | * Data section helpers | |
266 | */ | |
267 | #define NOSAVE_DATA \ | |
268 | . = ALIGN(PAGE_SIZE); \ | |
269 | VMLINUX_SYMBOL(__nosave_begin) = .; \ | |
07b3bb1e | 270 | *(.data..nosave) \ |
ef53dae8 SR |
271 | . = ALIGN(PAGE_SIZE); \ |
272 | VMLINUX_SYMBOL(__nosave_end) = .; | |
273 | ||
274 | #define PAGE_ALIGNED_DATA(page_align) \ | |
275 | . = ALIGN(page_align); \ | |
75b13483 | 276 | *(.data..page_aligned) |
ef53dae8 SR |
277 | |
278 | #define READ_MOSTLY_DATA(align) \ | |
279 | . = ALIGN(align); \ | |
8369744f SL |
280 | *(.data..read_mostly) \ |
281 | . = ALIGN(align); | |
ef53dae8 SR |
282 | |
283 | #define CACHELINE_ALIGNED_DATA(align) \ | |
284 | . = ALIGN(align); \ | |
4af57b78 | 285 | *(.data..cacheline_aligned) |
ef53dae8 | 286 | |
39a449d9 | 287 | #define INIT_TASK_DATA(align) \ |
ef53dae8 | 288 | . = ALIGN(align); \ |
91ed140d | 289 | VMLINUX_SYMBOL(__start_init_task) = .; \ |
0500871f DH |
290 | VMLINUX_SYMBOL(init_thread_union) = .; \ |
291 | VMLINUX_SYMBOL(init_stack) = .; \ | |
91ed140d | 292 | *(.data..init_task) \ |
0500871f DH |
293 | *(.data..init_thread_info) \ |
294 | . = VMLINUX_SYMBOL(__start_init_task) + THREAD_SIZE; \ | |
91ed140d | 295 | VMLINUX_SYMBOL(__end_init_task) = .; |
ef53dae8 | 296 | |
32fb2fc5 HC |
297 | /* |
298 | * Allow architectures to handle ro_after_init data on their | |
299 | * own by defining an empty RO_AFTER_INIT_DATA. | |
300 | */ | |
301 | #ifndef RO_AFTER_INIT_DATA | |
d7c19b06 | 302 | #define RO_AFTER_INIT_DATA \ |
d79bf21e | 303 | VMLINUX_SYMBOL(__start_ro_after_init) = .; \ |
d7c19b06 | 304 | *(.data..ro_after_init) \ |
d79bf21e | 305 | VMLINUX_SYMBOL(__end_ro_after_init) = .; |
32fb2fc5 HC |
306 | #endif |
307 | ||
ef53dae8 SR |
308 | /* |
309 | * Read only Data | |
310 | */ | |
311 | #define RO_DATA_SECTION(align) \ | |
4096b46f | 312 | . = ALIGN((align)); \ |
1da177e4 | 313 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
6569580d | 314 | VMLINUX_SYMBOL(__start_rodata) = .; \ |
1da177e4 | 315 | *(.rodata) *(.rodata.*) \ |
32fb2fc5 | 316 | RO_AFTER_INIT_DATA /* Read only after init */ \ |
4b89b7f7 | 317 | KEEP(*(__vermagic)) /* Kernel version magic */ \ |
65498646 MD |
318 | . = ALIGN(8); \ |
319 | VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \ | |
4b89b7f7 | 320 | KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \ |
65498646 | 321 | VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \ |
97e1c18e | 322 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
1da177e4 LT |
323 | } \ |
324 | \ | |
325 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ | |
326 | *(.rodata1) \ | |
327 | } \ | |
328 | \ | |
329 | /* PCI quirks */ \ | |
330 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ | |
331 | VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ | |
4b89b7f7 | 332 | KEEP(*(.pci_fixup_early)) \ |
1da177e4 LT |
333 | VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ |
334 | VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ | |
4b89b7f7 | 335 | KEEP(*(.pci_fixup_header)) \ |
1da177e4 LT |
336 | VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ |
337 | VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ | |
4b89b7f7 | 338 | KEEP(*(.pci_fixup_final)) \ |
1da177e4 LT |
339 | VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ |
340 | VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ | |
4b89b7f7 | 341 | KEEP(*(.pci_fixup_enable)) \ |
1da177e4 | 342 | VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ |
1597cacb | 343 | VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ |
4b89b7f7 | 344 | KEEP(*(.pci_fixup_resume)) \ |
1597cacb | 345 | VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ |
e1a2a51e | 346 | VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ |
4b89b7f7 | 347 | KEEP(*(.pci_fixup_resume_early)) \ |
e1a2a51e RW |
348 | VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ |
349 | VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ | |
4b89b7f7 | 350 | KEEP(*(.pci_fixup_suspend)) \ |
e1a2a51e | 351 | VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ |
7d2a01b8 | 352 | VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .; \ |
4b89b7f7 | 353 | KEEP(*(.pci_fixup_suspend_late)) \ |
7d2a01b8 | 354 | VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \ |
1da177e4 LT |
355 | } \ |
356 | \ | |
5658c769 DW |
357 | /* Built-in firmware blobs */ \ |
358 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ | |
359 | VMLINUX_SYMBOL(__start_builtin_fw) = .; \ | |
4b89b7f7 | 360 | KEEP(*(.builtin_fw)) \ |
5658c769 DW |
361 | VMLINUX_SYMBOL(__end_builtin_fw) = .; \ |
362 | } \ | |
363 | \ | |
63687a52 JB |
364 | TRACEDATA \ |
365 | \ | |
1da177e4 LT |
366 | /* Kernel symbol table: Normal symbols */ \ |
367 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ | |
368 | VMLINUX_SYMBOL(__start___ksymtab) = .; \ | |
b67067f1 | 369 | KEEP(*(SORT(___ksymtab+*))) \ |
1da177e4 LT |
370 | VMLINUX_SYMBOL(__stop___ksymtab) = .; \ |
371 | } \ | |
372 | \ | |
373 | /* Kernel symbol table: GPL-only symbols */ \ | |
374 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ | |
375 | VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ | |
b67067f1 | 376 | KEEP(*(SORT(___ksymtab_gpl+*))) \ |
1da177e4 LT |
377 | VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ |
378 | } \ | |
379 | \ | |
f71d20e9 AV |
380 | /* Kernel symbol table: Normal unused symbols */ \ |
381 | __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ | |
382 | VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ | |
b67067f1 | 383 | KEEP(*(SORT(___ksymtab_unused+*))) \ |
f71d20e9 AV |
384 | VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ |
385 | } \ | |
386 | \ | |
387 | /* Kernel symbol table: GPL-only unused symbols */ \ | |
388 | __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ | |
389 | VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ | |
b67067f1 | 390 | KEEP(*(SORT(___ksymtab_unused_gpl+*))) \ |
f71d20e9 AV |
391 | VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ |
392 | } \ | |
393 | \ | |
9f28bb7e GKH |
394 | /* Kernel symbol table: GPL-future-only symbols */ \ |
395 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ | |
396 | VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ | |
b67067f1 | 397 | KEEP(*(SORT(___ksymtab_gpl_future+*))) \ |
9f28bb7e GKH |
398 | VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ |
399 | } \ | |
400 | \ | |
1da177e4 LT |
401 | /* Kernel symbol table: Normal symbols */ \ |
402 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ | |
403 | VMLINUX_SYMBOL(__start___kcrctab) = .; \ | |
b67067f1 | 404 | KEEP(*(SORT(___kcrctab+*))) \ |
1da177e4 LT |
405 | VMLINUX_SYMBOL(__stop___kcrctab) = .; \ |
406 | } \ | |
407 | \ | |
408 | /* Kernel symbol table: GPL-only symbols */ \ | |
409 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ | |
410 | VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ | |
b67067f1 | 411 | KEEP(*(SORT(___kcrctab_gpl+*))) \ |
1da177e4 LT |
412 | VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ |
413 | } \ | |
414 | \ | |
f71d20e9 AV |
415 | /* Kernel symbol table: Normal unused symbols */ \ |
416 | __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ | |
417 | VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ | |
b67067f1 | 418 | KEEP(*(SORT(___kcrctab_unused+*))) \ |
f71d20e9 AV |
419 | VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ |
420 | } \ | |
421 | \ | |
422 | /* Kernel symbol table: GPL-only unused symbols */ \ | |
423 | __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ | |
424 | VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ | |
b67067f1 | 425 | KEEP(*(SORT(___kcrctab_unused_gpl+*))) \ |
f71d20e9 AV |
426 | VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ |
427 | } \ | |
428 | \ | |
9f28bb7e GKH |
429 | /* Kernel symbol table: GPL-future-only symbols */ \ |
430 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ | |
431 | VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ | |
b67067f1 | 432 | KEEP(*(SORT(___kcrctab_gpl_future+*))) \ |
9f28bb7e GKH |
433 | VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ |
434 | } \ | |
435 | \ | |
1da177e4 LT |
436 | /* Kernel symbol table: strings */ \ |
437 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ | |
4b89b7f7 | 438 | *(__ksymtab_strings) \ |
1da177e4 LT |
439 | } \ |
440 | \ | |
eb8f6890 SR |
441 | /* __*init sections */ \ |
442 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ | |
312b1485 | 443 | *(.ref.rodata) \ |
eb8f6890 SR |
444 | MEM_KEEP(init.rodata) \ |
445 | MEM_KEEP(exit.rodata) \ | |
446 | } \ | |
447 | \ | |
1da177e4 LT |
448 | /* Built-in module parameters. */ \ |
449 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ | |
450 | VMLINUX_SYMBOL(__start___param) = .; \ | |
4b89b7f7 | 451 | KEEP(*(__param)) \ |
1da177e4 | 452 | VMLINUX_SYMBOL(__stop___param) = .; \ |
e94965ed DT |
453 | } \ |
454 | \ | |
455 | /* Built-in module versions. */ \ | |
456 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ | |
457 | VMLINUX_SYMBOL(__start___modver) = .; \ | |
4b89b7f7 | 458 | KEEP(*(__modver)) \ |
e94965ed | 459 | VMLINUX_SYMBOL(__stop___modver) = .; \ |
edeed305 | 460 | . = ALIGN((align)); \ |
6569580d | 461 | VMLINUX_SYMBOL(__end_rodata) = .; \ |
7583ddfd | 462 | } \ |
4096b46f SR |
463 | . = ALIGN((align)); |
464 | ||
ef53dae8 | 465 | /* RODATA & RO_DATA provided for backward compatibility. |
4096b46f | 466 | * All archs are supposed to use RO_DATA() */ |
ef53dae8 SR |
467 | #define RODATA RO_DATA_SECTION(4096) |
468 | #define RO_DATA(align) RO_DATA_SECTION(align) | |
1da177e4 LT |
469 | |
470 | #define SECURITY_INIT \ | |
60bad7fa | 471 | .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ |
1da177e4 | 472 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ |
b67067f1 | 473 | KEEP(*(.security_initcall.init)) \ |
1da177e4 LT |
474 | VMLINUX_SYMBOL(__security_initcall_end) = .; \ |
475 | } | |
476 | ||
cb87481e NP |
477 | /* |
478 | * .text section. Map to function alignment to avoid address changes | |
0f4c4af0 | 479 | * during second ld run in second ld pass when generating System.map |
cb87481e NP |
480 | * |
481 | * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead | |
482 | * code elimination is enabled, so these sections should be converted | |
483 | * to use ".." first. | |
484 | */ | |
7664709b SR |
485 | #define TEXT_TEXT \ |
486 | ALIGN_FUNCTION(); \ | |
cb87481e | 487 | *(.text.hot TEXT_MAIN .text.fixup .text.unlikely) \ |
564c9cc8 | 488 | *(.text..refcount) \ |
312b1485 | 489 | *(.ref.text) \ |
eb8f6890 | 490 | MEM_KEEP(init.text) \ |
fb5e2b37 | 491 | MEM_KEEP(exit.text) \ |
eb8f6890 | 492 | |
7664709b | 493 | |
6d30e3a8 SR |
494 | /* sched.text is aling to function alignment to secure we have same |
495 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 496 | #define SCHED_TEXT \ |
6d30e3a8 | 497 | ALIGN_FUNCTION(); \ |
1da177e4 LT |
498 | VMLINUX_SYMBOL(__sched_text_start) = .; \ |
499 | *(.sched.text) \ | |
500 | VMLINUX_SYMBOL(__sched_text_end) = .; | |
501 | ||
6d30e3a8 SR |
502 | /* spinlock.text is aling to function alignment to secure we have same |
503 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 504 | #define LOCK_TEXT \ |
6d30e3a8 | 505 | ALIGN_FUNCTION(); \ |
1da177e4 LT |
506 | VMLINUX_SYMBOL(__lock_text_start) = .; \ |
507 | *(.spinlock.text) \ | |
508 | VMLINUX_SYMBOL(__lock_text_end) = .; | |
d0aaff97 | 509 | |
6727ad9e CM |
510 | #define CPUIDLE_TEXT \ |
511 | ALIGN_FUNCTION(); \ | |
512 | VMLINUX_SYMBOL(__cpuidle_text_start) = .; \ | |
513 | *(.cpuidle.text) \ | |
514 | VMLINUX_SYMBOL(__cpuidle_text_end) = .; | |
515 | ||
d0aaff97 PP |
516 | #define KPROBES_TEXT \ |
517 | ALIGN_FUNCTION(); \ | |
518 | VMLINUX_SYMBOL(__kprobes_text_start) = .; \ | |
519 | *(.kprobes.text) \ | |
520 | VMLINUX_SYMBOL(__kprobes_text_end) = .; | |
a7d0c210 | 521 | |
ea714547 JO |
522 | #define ENTRY_TEXT \ |
523 | ALIGN_FUNCTION(); \ | |
524 | VMLINUX_SYMBOL(__entry_text_start) = .; \ | |
525 | *(.entry.text) \ | |
526 | VMLINUX_SYMBOL(__entry_text_end) = .; | |
527 | ||
a0343e82 FW |
528 | #define IRQENTRY_TEXT \ |
529 | ALIGN_FUNCTION(); \ | |
530 | VMLINUX_SYMBOL(__irqentry_text_start) = .; \ | |
531 | *(.irqentry.text) \ | |
532 | VMLINUX_SYMBOL(__irqentry_text_end) = .; | |
a0343e82 | 533 | |
be7635e7 AP |
534 | #define SOFTIRQENTRY_TEXT \ |
535 | ALIGN_FUNCTION(); \ | |
536 | VMLINUX_SYMBOL(__softirqentry_text_start) = .; \ | |
537 | *(.softirqentry.text) \ | |
538 | VMLINUX_SYMBOL(__softirqentry_text_end) = .; | |
be7635e7 | 539 | |
37c514e3 | 540 | /* Section used for early init (in .S files) */ |
7923f90f | 541 | #define HEAD_TEXT *(.head.text) |
37c514e3 | 542 | |
7923f90f | 543 | #define HEAD_TEXT_SECTION \ |
ef53dae8 SR |
544 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
545 | HEAD_TEXT \ | |
546 | } | |
547 | ||
548 | /* | |
549 | * Exception table | |
550 | */ | |
551 | #define EXCEPTION_TABLE(align) \ | |
552 | . = ALIGN(align); \ | |
553 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ | |
554 | VMLINUX_SYMBOL(__start___ex_table) = .; \ | |
4b89b7f7 | 555 | KEEP(*(__ex_table)) \ |
ef53dae8 SR |
556 | VMLINUX_SYMBOL(__stop___ex_table) = .; \ |
557 | } | |
558 | ||
559 | /* | |
560 | * Init task | |
561 | */ | |
39a449d9 | 562 | #define INIT_TASK_DATA_SECTION(align) \ |
ef53dae8 | 563 | . = ALIGN(align); \ |
da5e37ef | 564 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
39a449d9 | 565 | INIT_TASK_DATA(align) \ |
ef53dae8 | 566 | } |
37c514e3 | 567 | |
b99b87f7 | 568 | #ifdef CONFIG_CONSTRUCTORS |
2a2325e6 HC |
569 | #define KERNEL_CTORS() . = ALIGN(8); \ |
570 | VMLINUX_SYMBOL(__ctors_start) = .; \ | |
4b89b7f7 NP |
571 | KEEP(*(.ctors)) \ |
572 | KEEP(*(SORT(.init_array.*))) \ | |
573 | KEEP(*(.init_array)) \ | |
b99b87f7 PO |
574 | VMLINUX_SYMBOL(__ctors_end) = .; |
575 | #else | |
576 | #define KERNEL_CTORS() | |
577 | #endif | |
578 | ||
01ba2bdc | 579 | /* init and exit section handling */ |
eb8f6890 | 580 | #define INIT_DATA \ |
b67067f1 | 581 | KEEP(*(SORT(___kentry+*))) \ |
eb8f6890 | 582 | *(.init.data) \ |
eb8f6890 | 583 | MEM_DISCARD(init.data) \ |
b99b87f7 | 584 | KERNEL_CTORS() \ |
4b3b4c5e | 585 | MCOUNT_REC() \ |
9fd49328 | 586 | *(.init.rodata) \ |
e4a9ea5e | 587 | FTRACE_EVENTS() \ |
3d56e331 | 588 | TRACE_SYSCALLS() \ |
376e2424 | 589 | KPROBE_BLACKLIST() \ |
540adea3 | 590 | ERROR_INJECT_WHITELIST() \ |
aab94339 | 591 | MEM_DISCARD(init.rodata) \ |
f2f6c255 | 592 | CLK_OF_TABLES() \ |
f618c470 | 593 | RESERVEDMEM_OF_TABLES() \ |
2fcc112a | 594 | TIMER_OF_TABLES() \ |
1cd076bf | 595 | IOMMU_OF_TABLES() \ |
6c3ff8b1 | 596 | CPU_METHOD_OF_TABLES() \ |
449e056c | 597 | CPUIDLE_METHOD_OF_TABLES() \ |
f6e916b8 | 598 | KERNEL_DTB() \ |
b0b6abd3 | 599 | IRQCHIP_OF_MATCH_TABLE() \ |
46e589a3 | 600 | ACPI_PROBE_TABLE(irqchip) \ |
2fcc112a | 601 | ACPI_PROBE_TABLE(timer) \ |
2eaa7909 | 602 | EARLYCON_TABLE() |
eb8f6890 SR |
603 | |
604 | #define INIT_TEXT \ | |
605 | *(.init.text) \ | |
e41f501d | 606 | *(.text.startup) \ |
eb8f6890 SR |
607 | MEM_DISCARD(init.text) |
608 | ||
609 | #define EXIT_DATA \ | |
610 | *(.exit.data) \ | |
e41f501d DV |
611 | *(.fini_array) \ |
612 | *(.dtors) \ | |
eb8f6890 SR |
613 | MEM_DISCARD(exit.data) \ |
614 | MEM_DISCARD(exit.rodata) | |
01ba2bdc | 615 | |
eb8f6890 SR |
616 | #define EXIT_TEXT \ |
617 | *(.exit.text) \ | |
e41f501d | 618 | *(.text.exit) \ |
eb8f6890 | 619 | MEM_DISCARD(exit.text) |
01ba2bdc | 620 | |
7923f90f SR |
621 | #define EXIT_CALL \ |
622 | *(.exitcall.exit) | |
623 | ||
ef53dae8 SR |
624 | /* |
625 | * bss (Block Started by Symbol) - uninitialized data | |
626 | * zeroed during startup | |
627 | */ | |
04e448d9 TA |
628 | #define SBSS(sbss_align) \ |
629 | . = ALIGN(sbss_align); \ | |
ef53dae8 | 630 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
83a092cf | 631 | *(.dynsbss) \ |
ef53dae8 SR |
632 | *(.sbss) \ |
633 | *(.scommon) \ | |
634 | } | |
635 | ||
c87728ca DD |
636 | /* |
637 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra | |
638 | * sections to the front of bss. | |
639 | */ | |
640 | #ifndef BSS_FIRST_SECTIONS | |
641 | #define BSS_FIRST_SECTIONS | |
642 | #endif | |
643 | ||
ef53dae8 SR |
644 | #define BSS(bss_align) \ |
645 | . = ALIGN(bss_align); \ | |
646 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ | |
c87728ca | 647 | BSS_FIRST_SECTIONS \ |
7c74df07 | 648 | *(.bss..page_aligned) \ |
ef53dae8 | 649 | *(.dynbss) \ |
cb87481e | 650 | *(BSS_MAIN) \ |
ef53dae8 | 651 | *(COMMON) \ |
ef53dae8 SR |
652 | } |
653 | ||
654 | /* | |
655 | * DWARF debug sections. | |
656 | * Symbols in the DWARF debugging sections are relative to | |
657 | * the beginning of the section so we begin them at 0. | |
658 | */ | |
a7d0c210 PBG |
659 | #define DWARF_DEBUG \ |
660 | /* DWARF 1 */ \ | |
661 | .debug 0 : { *(.debug) } \ | |
662 | .line 0 : { *(.line) } \ | |
663 | /* GNU DWARF 1 extensions */ \ | |
664 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ | |
665 | .debug_sfnames 0 : { *(.debug_sfnames) } \ | |
666 | /* DWARF 1.1 and DWARF 2 */ \ | |
667 | .debug_aranges 0 : { *(.debug_aranges) } \ | |
668 | .debug_pubnames 0 : { *(.debug_pubnames) } \ | |
669 | /* DWARF 2 */ \ | |
670 | .debug_info 0 : { *(.debug_info \ | |
671 | .gnu.linkonce.wi.*) } \ | |
672 | .debug_abbrev 0 : { *(.debug_abbrev) } \ | |
673 | .debug_line 0 : { *(.debug_line) } \ | |
674 | .debug_frame 0 : { *(.debug_frame) } \ | |
675 | .debug_str 0 : { *(.debug_str) } \ | |
676 | .debug_loc 0 : { *(.debug_loc) } \ | |
677 | .debug_macinfo 0 : { *(.debug_macinfo) } \ | |
83a092cf NP |
678 | .debug_pubtypes 0 : { *(.debug_pubtypes) } \ |
679 | /* DWARF 3 */ \ | |
680 | .debug_ranges 0 : { *(.debug_ranges) } \ | |
a7d0c210 PBG |
681 | /* SGI/MIPS DWARF 2 extensions */ \ |
682 | .debug_weaknames 0 : { *(.debug_weaknames) } \ | |
683 | .debug_funcnames 0 : { *(.debug_funcnames) } \ | |
684 | .debug_typenames 0 : { *(.debug_typenames) } \ | |
685 | .debug_varnames 0 : { *(.debug_varnames) } \ | |
83a092cf NP |
686 | /* GNU DWARF 2 extensions */ \ |
687 | .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \ | |
688 | .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \ | |
689 | /* DWARF 4 */ \ | |
690 | .debug_types 0 : { *(.debug_types) } \ | |
691 | /* DWARF 5 */ \ | |
692 | .debug_macro 0 : { *(.debug_macro) } \ | |
693 | .debug_addr 0 : { *(.debug_addr) } | |
a7d0c210 PBG |
694 | |
695 | /* Stabs debugging sections. */ | |
696 | #define STABS_DEBUG \ | |
697 | .stab 0 : { *(.stab) } \ | |
698 | .stabstr 0 : { *(.stabstr) } \ | |
699 | .stab.excl 0 : { *(.stab.excl) } \ | |
700 | .stab.exclstr 0 : { *(.stab.exclstr) } \ | |
701 | .stab.index 0 : { *(.stab.index) } \ | |
702 | .stab.indexstr 0 : { *(.stab.indexstr) } \ | |
703 | .comment 0 : { *(.comment) } | |
9c9b8b38 | 704 | |
6360b1fb | 705 | #ifdef CONFIG_GENERIC_BUG |
7664c5a1 JF |
706 | #define BUG_TABLE \ |
707 | . = ALIGN(8); \ | |
708 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ | |
c6de0026 | 709 | VMLINUX_SYMBOL(__start___bug_table) = .; \ |
4b89b7f7 | 710 | KEEP(*(__bug_table)) \ |
c6de0026 | 711 | VMLINUX_SYMBOL(__stop___bug_table) = .; \ |
7664c5a1 | 712 | } |
6360b1fb JB |
713 | #else |
714 | #define BUG_TABLE | |
715 | #endif | |
7664c5a1 | 716 | |
11af8474 | 717 | #ifdef CONFIG_UNWINDER_ORC |
ee9f8fce JP |
718 | #define ORC_UNWIND_TABLE \ |
719 | . = ALIGN(4); \ | |
720 | .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \ | |
721 | VMLINUX_SYMBOL(__start_orc_unwind_ip) = .; \ | |
722 | KEEP(*(.orc_unwind_ip)) \ | |
723 | VMLINUX_SYMBOL(__stop_orc_unwind_ip) = .; \ | |
724 | } \ | |
725 | . = ALIGN(6); \ | |
726 | .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ | |
727 | VMLINUX_SYMBOL(__start_orc_unwind) = .; \ | |
728 | KEEP(*(.orc_unwind)) \ | |
729 | VMLINUX_SYMBOL(__stop_orc_unwind) = .; \ | |
730 | } \ | |
731 | . = ALIGN(4); \ | |
732 | .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \ | |
733 | VMLINUX_SYMBOL(orc_lookup) = .; \ | |
734 | . += (((SIZEOF(.text) + LOOKUP_BLOCK_SIZE - 1) / \ | |
735 | LOOKUP_BLOCK_SIZE) + 1) * 4; \ | |
736 | VMLINUX_SYMBOL(orc_lookup_end) = .; \ | |
737 | } | |
738 | #else | |
739 | #define ORC_UNWIND_TABLE | |
740 | #endif | |
741 | ||
63687a52 JB |
742 | #ifdef CONFIG_PM_TRACE |
743 | #define TRACEDATA \ | |
744 | . = ALIGN(4); \ | |
745 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ | |
c6de0026 | 746 | VMLINUX_SYMBOL(__tracedata_start) = .; \ |
4b89b7f7 | 747 | KEEP(*(.tracedata)) \ |
c6de0026 | 748 | VMLINUX_SYMBOL(__tracedata_end) = .; \ |
63687a52 JB |
749 | } |
750 | #else | |
751 | #define TRACEDATA | |
752 | #endif | |
753 | ||
9c9b8b38 | 754 | #define NOTES \ |
cbe87121 RM |
755 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
756 | VMLINUX_SYMBOL(__start_notes) = .; \ | |
757 | *(.note.*) \ | |
758 | VMLINUX_SYMBOL(__stop_notes) = .; \ | |
759 | } | |
61ce1efe | 760 | |
ef53dae8 SR |
761 | #define INIT_SETUP(initsetup_align) \ |
762 | . = ALIGN(initsetup_align); \ | |
763 | VMLINUX_SYMBOL(__setup_start) = .; \ | |
4b89b7f7 | 764 | KEEP(*(.init.setup)) \ |
ef53dae8 SR |
765 | VMLINUX_SYMBOL(__setup_end) = .; |
766 | ||
026cee00 PM |
767 | #define INIT_CALLS_LEVEL(level) \ |
768 | VMLINUX_SYMBOL(__initcall##level##_start) = .; \ | |
b67067f1 NP |
769 | KEEP(*(.initcall##level##.init)) \ |
770 | KEEP(*(.initcall##level##s.init)) \ | |
61ce1efe | 771 | |
ef53dae8 SR |
772 | #define INIT_CALLS \ |
773 | VMLINUX_SYMBOL(__initcall_start) = .; \ | |
b67067f1 | 774 | KEEP(*(.initcallearly.init)) \ |
026cee00 PM |
775 | INIT_CALLS_LEVEL(0) \ |
776 | INIT_CALLS_LEVEL(1) \ | |
777 | INIT_CALLS_LEVEL(2) \ | |
778 | INIT_CALLS_LEVEL(3) \ | |
779 | INIT_CALLS_LEVEL(4) \ | |
780 | INIT_CALLS_LEVEL(5) \ | |
781 | INIT_CALLS_LEVEL(rootfs) \ | |
782 | INIT_CALLS_LEVEL(6) \ | |
783 | INIT_CALLS_LEVEL(7) \ | |
ef53dae8 SR |
784 | VMLINUX_SYMBOL(__initcall_end) = .; |
785 | ||
786 | #define CON_INITCALL \ | |
787 | VMLINUX_SYMBOL(__con_initcall_start) = .; \ | |
b67067f1 | 788 | KEEP(*(.con_initcall.init)) \ |
ef53dae8 SR |
789 | VMLINUX_SYMBOL(__con_initcall_end) = .; |
790 | ||
791 | #define SECURITY_INITCALL \ | |
792 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ | |
b67067f1 | 793 | KEEP(*(.security_initcall.init)) \ |
ef53dae8 SR |
794 | VMLINUX_SYMBOL(__security_initcall_end) = .; |
795 | ||
796 | #ifdef CONFIG_BLK_DEV_INITRD | |
797 | #define INIT_RAM_FS \ | |
d8826262 | 798 | . = ALIGN(4); \ |
ef53dae8 | 799 | VMLINUX_SYMBOL(__initramfs_start) = .; \ |
b67067f1 | 800 | KEEP(*(.init.ramfs)) \ |
ffe8018c | 801 | . = ALIGN(8); \ |
b67067f1 | 802 | KEEP(*(.init.ramfs.info)) |
ef53dae8 | 803 | #else |
eadfe219 | 804 | #define INIT_RAM_FS |
ef53dae8 SR |
805 | #endif |
806 | ||
ac26963a BS |
807 | /* |
808 | * Memory encryption operates on a page basis. Since we need to clear | |
809 | * the memory encryption mask for this section, it needs to be aligned | |
810 | * on a page boundary and be a page-size multiple in length. | |
811 | * | |
812 | * Note: We use a separate section so that only this section gets | |
813 | * decrypted to avoid exposing more than we wish. | |
814 | */ | |
815 | #ifdef CONFIG_AMD_MEM_ENCRYPT | |
816 | #define PERCPU_DECRYPTED_SECTION \ | |
817 | . = ALIGN(PAGE_SIZE); \ | |
818 | *(.data..percpu..decrypted) \ | |
819 | . = ALIGN(PAGE_SIZE); | |
820 | #else | |
821 | #define PERCPU_DECRYPTED_SECTION | |
822 | #endif | |
823 | ||
824 | ||
023bf6f1 TH |
825 | /* |
826 | * Default discarded sections. | |
827 | * | |
828 | * Some archs want to discard exit text/data at runtime rather than | |
829 | * link time due to cross-section references such as alt instructions, | |
830 | * bug table, eh_frame, etc. DISCARDS must be the last of output | |
831 | * section definitions so that such archs put those in earlier section | |
832 | * definitions. | |
833 | */ | |
405d967d TH |
834 | #define DISCARDS \ |
835 | /DISCARD/ : { \ | |
836 | EXIT_TEXT \ | |
837 | EXIT_DATA \ | |
023bf6f1 | 838 | EXIT_CALL \ |
405d967d | 839 | *(.discard) \ |
c7f52cdc | 840 | *(.discard.*) \ |
405d967d TH |
841 | } |
842 | ||
6ea0c34d MF |
843 | /** |
844 | * PERCPU_INPUT - the percpu input sections | |
845 | * @cacheline: cacheline size | |
846 | * | |
847 | * The core percpu section names and core symbols which do not rely | |
848 | * directly upon load addresses. | |
849 | * | |
850 | * @cacheline is used to align subsections to avoid false cacheline | |
851 | * sharing between subsections for different purposes. | |
852 | */ | |
853 | #define PERCPU_INPUT(cacheline) \ | |
854 | VMLINUX_SYMBOL(__per_cpu_start) = .; \ | |
855 | *(.data..percpu..first) \ | |
856 | . = ALIGN(PAGE_SIZE); \ | |
857 | *(.data..percpu..page_aligned) \ | |
858 | . = ALIGN(cacheline); \ | |
330d2822 | 859 | *(.data..percpu..read_mostly) \ |
6ea0c34d MF |
860 | . = ALIGN(cacheline); \ |
861 | *(.data..percpu) \ | |
862 | *(.data..percpu..shared_aligned) \ | |
ac26963a | 863 | PERCPU_DECRYPTED_SECTION \ |
6ea0c34d MF |
864 | VMLINUX_SYMBOL(__per_cpu_end) = .; |
865 | ||
3e5d8f97 | 866 | /** |
6b7c38d5 | 867 | * PERCPU_VADDR - define output section for percpu area |
19df0c2f | 868 | * @cacheline: cacheline size |
3e5d8f97 TH |
869 | * @vaddr: explicit base address (optional) |
870 | * @phdr: destination PHDR (optional) | |
871 | * | |
19df0c2f TH |
872 | * Macro which expands to output section for percpu area. |
873 | * | |
874 | * @cacheline is used to align subsections to avoid false cacheline | |
875 | * sharing between subsections for different purposes. | |
876 | * | |
877 | * If @vaddr is not blank, it specifies explicit base address and all | |
878 | * percpu symbols will be offset from the given address. If blank, | |
879 | * @vaddr always equals @laddr + LOAD_OFFSET. | |
3e5d8f97 TH |
880 | * |
881 | * @phdr defines the output PHDR to use if not blank. Be warned that | |
882 | * output PHDR is sticky. If @phdr is specified, the next output | |
883 | * section in the linker script will go there too. @phdr should have | |
884 | * a leading colon. | |
885 | * | |
3ac6cffe TH |
886 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
887 | * If there is no need to put the percpu section at a predetermined | |
0415b00d | 888 | * address, use PERCPU_SECTION. |
3e5d8f97 | 889 | */ |
19df0c2f | 890 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
dba3d36b | 891 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
3d9a854c | 892 | .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ |
6b7c38d5 | 893 | - LOAD_OFFSET) { \ |
6ea0c34d | 894 | PERCPU_INPUT(cacheline) \ |
6b7c38d5 | 895 | } phdr \ |
3d9a854c | 896 | . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); |
3e5d8f97 TH |
897 | |
898 | /** | |
0415b00d | 899 | * PERCPU_SECTION - define output section for percpu area, simple version |
19df0c2f | 900 | * @cacheline: cacheline size |
3e5d8f97 | 901 | * |
0415b00d TH |
902 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
903 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and | |
3e5d8f97 | 904 | * __per_cpu_start will be identical. |
3ac6cffe | 905 | * |
0415b00d | 906 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
19df0c2f TH |
907 | * except that __per_cpu_load is defined as a relative symbol against |
908 | * .data..percpu which is required for relocatable x86_32 configuration. | |
3e5d8f97 | 909 | */ |
0415b00d TH |
910 | #define PERCPU_SECTION(cacheline) \ |
911 | . = ALIGN(PAGE_SIZE); \ | |
3d9a854c | 912 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
3ac6cffe | 913 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
6ea0c34d | 914 | PERCPU_INPUT(cacheline) \ |
3ac6cffe | 915 | } |
ef53dae8 SR |
916 | |
917 | ||
918 | /* | |
919 | * Definition of the high level *_SECTION macros | |
920 | * They will fit only a subset of the architectures | |
921 | */ | |
922 | ||
923 | ||
924 | /* | |
925 | * Writeable data. | |
926 | * All sections are combined in a single .data section. | |
927 | * The sections following CONSTRUCTORS are arranged so their | |
928 | * typical alignment matches. | |
929 | * A cacheline is typical/always less than a PAGE_SIZE so | |
930 | * the sections that has this restriction (or similar) | |
931 | * is located before the ones requiring PAGE_SIZE alignment. | |
932 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which | |
25985edc | 933 | * matches the requirement of PAGE_ALIGNED_DATA. |
ef53dae8 | 934 | * |
7923f90f | 935 | * use 0 as page_align if page_aligned data is not used */ |
73f1d939 | 936 | #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ |
ef53dae8 SR |
937 | . = ALIGN(PAGE_SIZE); \ |
938 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ | |
39a449d9 | 939 | INIT_TASK_DATA(inittask) \ |
1b208622 TA |
940 | NOSAVE_DATA \ |
941 | PAGE_ALIGNED_DATA(pagealigned) \ | |
ef53dae8 SR |
942 | CACHELINE_ALIGNED_DATA(cacheline) \ |
943 | READ_MOSTLY_DATA(cacheline) \ | |
944 | DATA_DATA \ | |
945 | CONSTRUCTORS \ | |
19d43626 | 946 | } \ |
ee9f8fce | 947 | BUG_TABLE \ |
ef53dae8 SR |
948 | |
949 | #define INIT_TEXT_SECTION(inittext_align) \ | |
950 | . = ALIGN(inittext_align); \ | |
951 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ | |
952 | VMLINUX_SYMBOL(_sinittext) = .; \ | |
953 | INIT_TEXT \ | |
954 | VMLINUX_SYMBOL(_einittext) = .; \ | |
955 | } | |
956 | ||
957 | #define INIT_DATA_SECTION(initsetup_align) \ | |
958 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ | |
959 | INIT_DATA \ | |
960 | INIT_SETUP(initsetup_align) \ | |
961 | INIT_CALLS \ | |
962 | CON_INITCALL \ | |
963 | SECURITY_INITCALL \ | |
964 | INIT_RAM_FS \ | |
965 | } | |
966 | ||
04e448d9 TA |
967 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
968 | . = ALIGN(sbss_align); \ | |
969 | VMLINUX_SYMBOL(__bss_start) = .; \ | |
970 | SBSS(sbss_align) \ | |
ef53dae8 | 971 | BSS(bss_align) \ |
04e448d9 TA |
972 | . = ALIGN(stop_align); \ |
973 | VMLINUX_SYMBOL(__bss_stop) = .; |