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 | |
43 | * [_stext, _etext] is the text section | |
44 | * [_sdata, _edata] is the data section | |
45 | * | |
46 | * Some of the included output section have their own set of constants. | |
47 | * Examples are: [__initramfs_start, __initramfs_end] for initramfs and | |
48 | * [__nosave_begin, __nosave_end] for the nosave data | |
49 | */ | |
c80d471a | 50 | |
1da177e4 LT |
51 | #ifndef LOAD_OFFSET |
52 | #define LOAD_OFFSET 0 | |
53 | #endif | |
54 | ||
b92021b0 | 55 | #include <linux/export.h> |
1da177e4 | 56 | |
6d30e3a8 SR |
57 | /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
58 | #define ALIGN_FUNCTION() . = ALIGN(8) | |
59 | ||
07fca0e5 SR |
60 | /* |
61 | * Align to a 32 byte boundary equal to the | |
62 | * alignment gcc 4.5 uses for a struct | |
63 | */ | |
aab94339 DB |
64 | #define STRUCT_ALIGNMENT 32 |
65 | #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) | |
07fca0e5 | 66 | |
eb8f6890 SR |
67 | /* The actual configuration determine if the init/exit sections |
68 | * are handled as text/data or they can be discarded (which | |
69 | * often happens at runtime) | |
70 | */ | |
eb8f6890 SR |
71 | #ifdef CONFIG_HOTPLUG_CPU |
72 | #define CPU_KEEP(sec) *(.cpu##sec) | |
73 | #define CPU_DISCARD(sec) | |
74 | #else | |
75 | #define CPU_KEEP(sec) | |
76 | #define CPU_DISCARD(sec) *(.cpu##sec) | |
77 | #endif | |
78 | ||
1a3fb6d4 | 79 | #if defined(CONFIG_MEMORY_HOTPLUG) |
eb8f6890 SR |
80 | #define MEM_KEEP(sec) *(.mem##sec) |
81 | #define MEM_DISCARD(sec) | |
82 | #else | |
83 | #define MEM_KEEP(sec) | |
84 | #define MEM_DISCARD(sec) *(.mem##sec) | |
85 | #endif | |
86 | ||
8da3821b | 87 | #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
4b3b4c5e JR |
88 | #define MCOUNT_REC() . = ALIGN(8); \ |
89 | VMLINUX_SYMBOL(__start_mcount_loc) = .; \ | |
8da3821b SR |
90 | *(__mcount_loc) \ |
91 | VMLINUX_SYMBOL(__stop_mcount_loc) = .; | |
92 | #else | |
93 | #define MCOUNT_REC() | |
94 | #endif | |
eb8f6890 | 95 | |
2ed84eeb | 96 | #ifdef CONFIG_TRACE_BRANCH_PROFILING |
45b79749 SR |
97 | #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ |
98 | *(_ftrace_annotated_branch) \ | |
99 | VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; | |
1f0d69a9 SR |
100 | #else |
101 | #define LIKELY_PROFILE() | |
102 | #endif | |
103 | ||
2bcd521a SR |
104 | #ifdef CONFIG_PROFILE_ALL_BRANCHES |
105 | #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ | |
106 | *(_ftrace_branch) \ | |
107 | VMLINUX_SYMBOL(__stop_branch_profile) = .; | |
108 | #else | |
109 | #define BRANCH_PROFILE() | |
110 | #endif | |
111 | ||
5f77a88b | 112 | #ifdef CONFIG_EVENT_TRACING |
e4a9ea5e SR |
113 | #define FTRACE_EVENTS() . = ALIGN(8); \ |
114 | VMLINUX_SYMBOL(__start_ftrace_events) = .; \ | |
b77e38aa SR |
115 | *(_ftrace_events) \ |
116 | VMLINUX_SYMBOL(__stop_ftrace_events) = .; | |
117 | #else | |
118 | #define FTRACE_EVENTS() | |
119 | #endif | |
120 | ||
1ba28e02 LJ |
121 | #ifdef CONFIG_TRACING |
122 | #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ | |
123 | *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \ | |
124 | VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; | |
102c9323 SRRH |
125 | #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \ |
126 | *(__tracepoint_str) /* Trace_printk fmt' pointer */ \ | |
127 | VMLINUX_SYMBOL(__stop___tracepoint_str) = .; | |
1ba28e02 LJ |
128 | #else |
129 | #define TRACE_PRINTKS() | |
102c9323 | 130 | #define TRACEPOINT_STR() |
1ba28e02 LJ |
131 | #endif |
132 | ||
bed1ffca | 133 | #ifdef CONFIG_FTRACE_SYSCALLS |
3d56e331 SR |
134 | #define TRACE_SYSCALLS() . = ALIGN(8); \ |
135 | VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ | |
bed1ffca FW |
136 | *(__syscalls_metadata) \ |
137 | VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; | |
138 | #else | |
139 | #define TRACE_SYSCALLS() | |
140 | #endif | |
141 | ||
ae278a93 SW |
142 | #ifdef CONFIG_CLKSRC_OF |
143 | #define CLKSRC_OF_TABLES() . = ALIGN(8); \ | |
144 | VMLINUX_SYMBOL(__clksrc_of_table) = .; \ | |
145 | *(__clksrc_of_table) \ | |
146 | *(__clksrc_of_table_end) | |
147 | #else | |
148 | #define CLKSRC_OF_TABLES() | |
149 | #endif | |
aab94339 | 150 | |
f6e916b8 TP |
151 | #ifdef CONFIG_IRQCHIP |
152 | #define IRQCHIP_OF_MATCH_TABLE() \ | |
153 | . = ALIGN(8); \ | |
154 | VMLINUX_SYMBOL(__irqchip_begin) = .; \ | |
155 | *(__irqchip_of_table) \ | |
156 | *(__irqchip_of_end) | |
157 | #else | |
158 | #define IRQCHIP_OF_MATCH_TABLE() | |
159 | #endif | |
aab94339 | 160 | |
f2f6c255 PG |
161 | #ifdef CONFIG_COMMON_CLK |
162 | #define CLK_OF_TABLES() . = ALIGN(8); \ | |
163 | VMLINUX_SYMBOL(__clk_of_table) = .; \ | |
164 | *(__clk_of_table) \ | |
165 | *(__clk_of_table_end) | |
166 | #else | |
167 | #define CLK_OF_TABLES() | |
168 | #endif | |
169 | ||
f618c470 MS |
170 | #ifdef CONFIG_OF_RESERVED_MEM |
171 | #define RESERVEDMEM_OF_TABLES() \ | |
172 | . = ALIGN(8); \ | |
173 | VMLINUX_SYMBOL(__reservedmem_of_table) = .; \ | |
174 | *(__reservedmem_of_table) \ | |
175 | *(__reservedmem_of_table_end) | |
176 | #else | |
177 | #define RESERVEDMEM_OF_TABLES() | |
178 | #endif | |
179 | ||
6c3ff8b1 SB |
180 | #ifdef CONFIG_SMP |
181 | #define CPU_METHOD_OF_TABLES() . = ALIGN(8); \ | |
182 | VMLINUX_SYMBOL(__cpu_method_of_table_begin) = .; \ | |
183 | *(__cpu_method_of_table) \ | |
184 | VMLINUX_SYMBOL(__cpu_method_of_table_end) = .; | |
185 | #else | |
186 | #define CPU_METHOD_OF_TABLES() | |
187 | #endif | |
188 | ||
aab94339 DB |
189 | #define KERNEL_DTB() \ |
190 | STRUCT_ALIGN(); \ | |
191 | VMLINUX_SYMBOL(__dtb_start) = .; \ | |
192 | *(.dtb.init.rodata) \ | |
193 | VMLINUX_SYMBOL(__dtb_end) = .; | |
194 | ||
ca967258 SR |
195 | /* .data section */ |
196 | #define DATA_DATA \ | |
0e0d314e | 197 | *(.data) \ |
312b1485 | 198 | *(.ref.data) \ |
d356c0b6 | 199 | *(.data..shared_aligned) /* percpu related */ \ |
eb8f6890 SR |
200 | MEM_KEEP(init.data) \ |
201 | MEM_KEEP(exit.data) \ | |
7ccaba53 | 202 | *(.data.unlikely) \ |
65498646 | 203 | STRUCT_ALIGN(); \ |
97e1c18e | 204 | *(__tracepoints) \ |
e9d376f0 | 205 | /* implement dynamic printk debug */ \ |
d430d3d7 JB |
206 | . = ALIGN(8); \ |
207 | VMLINUX_SYMBOL(__start___jump_table) = .; \ | |
208 | *(__jump_table) \ | |
209 | VMLINUX_SYMBOL(__stop___jump_table) = .; \ | |
e9d376f0 JB |
210 | . = ALIGN(8); \ |
211 | VMLINUX_SYMBOL(__start___verbose) = .; \ | |
212 | *(__verbose) \ | |
213 | VMLINUX_SYMBOL(__stop___verbose) = .; \ | |
2bcd521a | 214 | LIKELY_PROFILE() \ |
b77e38aa | 215 | BRANCH_PROFILE() \ |
102c9323 SRRH |
216 | TRACE_PRINTKS() \ |
217 | TRACEPOINT_STR() | |
ca967258 | 218 | |
ef53dae8 SR |
219 | /* |
220 | * Data section helpers | |
221 | */ | |
222 | #define NOSAVE_DATA \ | |
223 | . = ALIGN(PAGE_SIZE); \ | |
224 | VMLINUX_SYMBOL(__nosave_begin) = .; \ | |
07b3bb1e | 225 | *(.data..nosave) \ |
ef53dae8 SR |
226 | . = ALIGN(PAGE_SIZE); \ |
227 | VMLINUX_SYMBOL(__nosave_end) = .; | |
228 | ||
229 | #define PAGE_ALIGNED_DATA(page_align) \ | |
230 | . = ALIGN(page_align); \ | |
75b13483 | 231 | *(.data..page_aligned) |
ef53dae8 SR |
232 | |
233 | #define READ_MOSTLY_DATA(align) \ | |
234 | . = ALIGN(align); \ | |
8369744f SL |
235 | *(.data..read_mostly) \ |
236 | . = ALIGN(align); | |
ef53dae8 SR |
237 | |
238 | #define CACHELINE_ALIGNED_DATA(align) \ | |
239 | . = ALIGN(align); \ | |
4af57b78 | 240 | *(.data..cacheline_aligned) |
ef53dae8 | 241 | |
39a449d9 | 242 | #define INIT_TASK_DATA(align) \ |
ef53dae8 | 243 | . = ALIGN(align); \ |
2af7687f | 244 | *(.data..init_task) |
ef53dae8 SR |
245 | |
246 | /* | |
247 | * Read only Data | |
248 | */ | |
249 | #define RO_DATA_SECTION(align) \ | |
4096b46f | 250 | . = ALIGN((align)); \ |
1da177e4 | 251 | .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
6569580d | 252 | VMLINUX_SYMBOL(__start_rodata) = .; \ |
1da177e4 LT |
253 | *(.rodata) *(.rodata.*) \ |
254 | *(__vermagic) /* Kernel version magic */ \ | |
65498646 MD |
255 | . = ALIGN(8); \ |
256 | VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \ | |
257 | *(__tracepoints_ptrs) /* Tracepoints: pointer array */\ | |
258 | VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \ | |
97e1c18e | 259 | *(__tracepoints_strings)/* Tracepoints: strings */ \ |
1da177e4 LT |
260 | } \ |
261 | \ | |
262 | .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ | |
263 | *(.rodata1) \ | |
264 | } \ | |
265 | \ | |
6360b1fb JB |
266 | BUG_TABLE \ |
267 | \ | |
1da177e4 LT |
268 | /* PCI quirks */ \ |
269 | .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ | |
270 | VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ | |
271 | *(.pci_fixup_early) \ | |
272 | VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ | |
273 | VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ | |
274 | *(.pci_fixup_header) \ | |
275 | VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ | |
276 | VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ | |
277 | *(.pci_fixup_final) \ | |
278 | VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ | |
279 | VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ | |
280 | *(.pci_fixup_enable) \ | |
281 | VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ | |
1597cacb AC |
282 | VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ |
283 | *(.pci_fixup_resume) \ | |
284 | VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ | |
e1a2a51e RW |
285 | VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ |
286 | *(.pci_fixup_resume_early) \ | |
287 | VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ | |
288 | VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ | |
289 | *(.pci_fixup_suspend) \ | |
290 | VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ | |
1da177e4 LT |
291 | } \ |
292 | \ | |
5658c769 DW |
293 | /* Built-in firmware blobs */ \ |
294 | .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ | |
295 | VMLINUX_SYMBOL(__start_builtin_fw) = .; \ | |
296 | *(.builtin_fw) \ | |
297 | VMLINUX_SYMBOL(__end_builtin_fw) = .; \ | |
298 | } \ | |
299 | \ | |
63687a52 JB |
300 | TRACEDATA \ |
301 | \ | |
1da177e4 LT |
302 | /* Kernel symbol table: Normal symbols */ \ |
303 | __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ | |
304 | VMLINUX_SYMBOL(__start___ksymtab) = .; \ | |
f02e8a65 | 305 | *(SORT(___ksymtab+*)) \ |
1da177e4 LT |
306 | VMLINUX_SYMBOL(__stop___ksymtab) = .; \ |
307 | } \ | |
308 | \ | |
309 | /* Kernel symbol table: GPL-only symbols */ \ | |
310 | __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ | |
311 | VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ | |
f02e8a65 | 312 | *(SORT(___ksymtab_gpl+*)) \ |
1da177e4 LT |
313 | VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ |
314 | } \ | |
315 | \ | |
f71d20e9 AV |
316 | /* Kernel symbol table: Normal unused symbols */ \ |
317 | __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ | |
318 | VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ | |
f02e8a65 | 319 | *(SORT(___ksymtab_unused+*)) \ |
f71d20e9 AV |
320 | VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ |
321 | } \ | |
322 | \ | |
323 | /* Kernel symbol table: GPL-only unused symbols */ \ | |
324 | __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ | |
325 | VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ | |
f02e8a65 | 326 | *(SORT(___ksymtab_unused_gpl+*)) \ |
f71d20e9 AV |
327 | VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ |
328 | } \ | |
329 | \ | |
9f28bb7e GKH |
330 | /* Kernel symbol table: GPL-future-only symbols */ \ |
331 | __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ | |
332 | VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ | |
f02e8a65 | 333 | *(SORT(___ksymtab_gpl_future+*)) \ |
9f28bb7e GKH |
334 | VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ |
335 | } \ | |
336 | \ | |
1da177e4 LT |
337 | /* Kernel symbol table: Normal symbols */ \ |
338 | __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ | |
339 | VMLINUX_SYMBOL(__start___kcrctab) = .; \ | |
f02e8a65 | 340 | *(SORT(___kcrctab+*)) \ |
1da177e4 LT |
341 | VMLINUX_SYMBOL(__stop___kcrctab) = .; \ |
342 | } \ | |
343 | \ | |
344 | /* Kernel symbol table: GPL-only symbols */ \ | |
345 | __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ | |
346 | VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ | |
f02e8a65 | 347 | *(SORT(___kcrctab_gpl+*)) \ |
1da177e4 LT |
348 | VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ |
349 | } \ | |
350 | \ | |
f71d20e9 AV |
351 | /* Kernel symbol table: Normal unused symbols */ \ |
352 | __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ | |
353 | VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ | |
f02e8a65 | 354 | *(SORT(___kcrctab_unused+*)) \ |
f71d20e9 AV |
355 | VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ |
356 | } \ | |
357 | \ | |
358 | /* Kernel symbol table: GPL-only unused symbols */ \ | |
359 | __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ | |
360 | VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ | |
f02e8a65 | 361 | *(SORT(___kcrctab_unused_gpl+*)) \ |
f71d20e9 AV |
362 | VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ |
363 | } \ | |
364 | \ | |
9f28bb7e GKH |
365 | /* Kernel symbol table: GPL-future-only symbols */ \ |
366 | __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ | |
367 | VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ | |
f02e8a65 | 368 | *(SORT(___kcrctab_gpl_future+*)) \ |
9f28bb7e GKH |
369 | VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ |
370 | } \ | |
371 | \ | |
1da177e4 LT |
372 | /* Kernel symbol table: strings */ \ |
373 | __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ | |
374 | *(__ksymtab_strings) \ | |
375 | } \ | |
376 | \ | |
eb8f6890 SR |
377 | /* __*init sections */ \ |
378 | __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ | |
312b1485 | 379 | *(.ref.rodata) \ |
eb8f6890 SR |
380 | MEM_KEEP(init.rodata) \ |
381 | MEM_KEEP(exit.rodata) \ | |
382 | } \ | |
383 | \ | |
1da177e4 LT |
384 | /* Built-in module parameters. */ \ |
385 | __param : AT(ADDR(__param) - LOAD_OFFSET) { \ | |
386 | VMLINUX_SYMBOL(__start___param) = .; \ | |
387 | *(__param) \ | |
388 | VMLINUX_SYMBOL(__stop___param) = .; \ | |
e94965ed DT |
389 | } \ |
390 | \ | |
391 | /* Built-in module versions. */ \ | |
392 | __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ | |
393 | VMLINUX_SYMBOL(__start___modver) = .; \ | |
394 | *(__modver) \ | |
395 | VMLINUX_SYMBOL(__stop___modver) = .; \ | |
edeed305 | 396 | . = ALIGN((align)); \ |
6569580d | 397 | VMLINUX_SYMBOL(__end_rodata) = .; \ |
7583ddfd | 398 | } \ |
4096b46f SR |
399 | . = ALIGN((align)); |
400 | ||
ef53dae8 | 401 | /* RODATA & RO_DATA provided for backward compatibility. |
4096b46f | 402 | * All archs are supposed to use RO_DATA() */ |
ef53dae8 SR |
403 | #define RODATA RO_DATA_SECTION(4096) |
404 | #define RO_DATA(align) RO_DATA_SECTION(align) | |
1da177e4 LT |
405 | |
406 | #define SECURITY_INIT \ | |
60bad7fa | 407 | .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ |
1da177e4 LT |
408 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ |
409 | *(.security_initcall.init) \ | |
410 | VMLINUX_SYMBOL(__security_initcall_end) = .; \ | |
411 | } | |
412 | ||
7664709b SR |
413 | /* .text section. Map to function alignment to avoid address changes |
414 | * during second ld run in second ld pass when generating System.map */ | |
415 | #define TEXT_TEXT \ | |
416 | ALIGN_FUNCTION(); \ | |
fb5e2b37 | 417 | *(.text.hot) \ |
0e0d314e | 418 | *(.text) \ |
312b1485 | 419 | *(.ref.text) \ |
eb8f6890 | 420 | MEM_KEEP(init.text) \ |
fb5e2b37 JB |
421 | MEM_KEEP(exit.text) \ |
422 | *(.text.unlikely) | |
eb8f6890 | 423 | |
7664709b | 424 | |
6d30e3a8 SR |
425 | /* sched.text is aling to function alignment to secure we have same |
426 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 427 | #define SCHED_TEXT \ |
6d30e3a8 | 428 | ALIGN_FUNCTION(); \ |
1da177e4 LT |
429 | VMLINUX_SYMBOL(__sched_text_start) = .; \ |
430 | *(.sched.text) \ | |
431 | VMLINUX_SYMBOL(__sched_text_end) = .; | |
432 | ||
6d30e3a8 SR |
433 | /* spinlock.text is aling to function alignment to secure we have same |
434 | * address even at second ld pass when generating System.map */ | |
1da177e4 | 435 | #define LOCK_TEXT \ |
6d30e3a8 | 436 | ALIGN_FUNCTION(); \ |
1da177e4 LT |
437 | VMLINUX_SYMBOL(__lock_text_start) = .; \ |
438 | *(.spinlock.text) \ | |
439 | VMLINUX_SYMBOL(__lock_text_end) = .; | |
d0aaff97 PP |
440 | |
441 | #define KPROBES_TEXT \ | |
442 | ALIGN_FUNCTION(); \ | |
443 | VMLINUX_SYMBOL(__kprobes_text_start) = .; \ | |
444 | *(.kprobes.text) \ | |
445 | VMLINUX_SYMBOL(__kprobes_text_end) = .; | |
a7d0c210 | 446 | |
ea714547 JO |
447 | #define ENTRY_TEXT \ |
448 | ALIGN_FUNCTION(); \ | |
449 | VMLINUX_SYMBOL(__entry_text_start) = .; \ | |
450 | *(.entry.text) \ | |
451 | VMLINUX_SYMBOL(__entry_text_end) = .; | |
452 | ||
a0343e82 FW |
453 | #ifdef CONFIG_FUNCTION_GRAPH_TRACER |
454 | #define IRQENTRY_TEXT \ | |
455 | ALIGN_FUNCTION(); \ | |
456 | VMLINUX_SYMBOL(__irqentry_text_start) = .; \ | |
457 | *(.irqentry.text) \ | |
458 | VMLINUX_SYMBOL(__irqentry_text_end) = .; | |
459 | #else | |
460 | #define IRQENTRY_TEXT | |
461 | #endif | |
462 | ||
37c514e3 | 463 | /* Section used for early init (in .S files) */ |
7923f90f | 464 | #define HEAD_TEXT *(.head.text) |
37c514e3 | 465 | |
7923f90f | 466 | #define HEAD_TEXT_SECTION \ |
ef53dae8 SR |
467 | .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
468 | HEAD_TEXT \ | |
469 | } | |
470 | ||
471 | /* | |
472 | * Exception table | |
473 | */ | |
474 | #define EXCEPTION_TABLE(align) \ | |
475 | . = ALIGN(align); \ | |
476 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ | |
477 | VMLINUX_SYMBOL(__start___ex_table) = .; \ | |
478 | *(__ex_table) \ | |
479 | VMLINUX_SYMBOL(__stop___ex_table) = .; \ | |
480 | } | |
481 | ||
482 | /* | |
483 | * Init task | |
484 | */ | |
39a449d9 | 485 | #define INIT_TASK_DATA_SECTION(align) \ |
ef53dae8 | 486 | . = ALIGN(align); \ |
da5e37ef | 487 | .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
39a449d9 | 488 | INIT_TASK_DATA(align) \ |
ef53dae8 | 489 | } |
37c514e3 | 490 | |
b99b87f7 | 491 | #ifdef CONFIG_CONSTRUCTORS |
2a2325e6 HC |
492 | #define KERNEL_CTORS() . = ALIGN(8); \ |
493 | VMLINUX_SYMBOL(__ctors_start) = .; \ | |
b99b87f7 | 494 | *(.ctors) \ |
eb3057df | 495 | *(.init_array) \ |
b99b87f7 PO |
496 | VMLINUX_SYMBOL(__ctors_end) = .; |
497 | #else | |
498 | #define KERNEL_CTORS() | |
499 | #endif | |
500 | ||
01ba2bdc | 501 | /* init and exit section handling */ |
eb8f6890 SR |
502 | #define INIT_DATA \ |
503 | *(.init.data) \ | |
eb8f6890 | 504 | MEM_DISCARD(init.data) \ |
b99b87f7 | 505 | KERNEL_CTORS() \ |
4b3b4c5e | 506 | MCOUNT_REC() \ |
9fd49328 | 507 | *(.init.rodata) \ |
e4a9ea5e | 508 | FTRACE_EVENTS() \ |
3d56e331 | 509 | TRACE_SYSCALLS() \ |
aab94339 | 510 | MEM_DISCARD(init.rodata) \ |
f2f6c255 | 511 | CLK_OF_TABLES() \ |
f618c470 | 512 | RESERVEDMEM_OF_TABLES() \ |
ae278a93 | 513 | CLKSRC_OF_TABLES() \ |
6c3ff8b1 | 514 | CPU_METHOD_OF_TABLES() \ |
f6e916b8 TP |
515 | KERNEL_DTB() \ |
516 | IRQCHIP_OF_MATCH_TABLE() | |
eb8f6890 SR |
517 | |
518 | #define INIT_TEXT \ | |
519 | *(.init.text) \ | |
eb8f6890 SR |
520 | MEM_DISCARD(init.text) |
521 | ||
522 | #define EXIT_DATA \ | |
523 | *(.exit.data) \ | |
eb8f6890 SR |
524 | MEM_DISCARD(exit.data) \ |
525 | MEM_DISCARD(exit.rodata) | |
01ba2bdc | 526 | |
eb8f6890 SR |
527 | #define EXIT_TEXT \ |
528 | *(.exit.text) \ | |
eb8f6890 | 529 | MEM_DISCARD(exit.text) |
01ba2bdc | 530 | |
7923f90f SR |
531 | #define EXIT_CALL \ |
532 | *(.exitcall.exit) | |
533 | ||
ef53dae8 SR |
534 | /* |
535 | * bss (Block Started by Symbol) - uninitialized data | |
536 | * zeroed during startup | |
537 | */ | |
04e448d9 TA |
538 | #define SBSS(sbss_align) \ |
539 | . = ALIGN(sbss_align); \ | |
ef53dae8 SR |
540 | .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
541 | *(.sbss) \ | |
542 | *(.scommon) \ | |
543 | } | |
544 | ||
c87728ca DD |
545 | /* |
546 | * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra | |
547 | * sections to the front of bss. | |
548 | */ | |
549 | #ifndef BSS_FIRST_SECTIONS | |
550 | #define BSS_FIRST_SECTIONS | |
551 | #endif | |
552 | ||
ef53dae8 SR |
553 | #define BSS(bss_align) \ |
554 | . = ALIGN(bss_align); \ | |
555 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ | |
c87728ca | 556 | BSS_FIRST_SECTIONS \ |
7c74df07 | 557 | *(.bss..page_aligned) \ |
ef53dae8 SR |
558 | *(.dynbss) \ |
559 | *(.bss) \ | |
560 | *(COMMON) \ | |
ef53dae8 SR |
561 | } |
562 | ||
563 | /* | |
564 | * DWARF debug sections. | |
565 | * Symbols in the DWARF debugging sections are relative to | |
566 | * the beginning of the section so we begin them at 0. | |
567 | */ | |
a7d0c210 PBG |
568 | #define DWARF_DEBUG \ |
569 | /* DWARF 1 */ \ | |
570 | .debug 0 : { *(.debug) } \ | |
571 | .line 0 : { *(.line) } \ | |
572 | /* GNU DWARF 1 extensions */ \ | |
573 | .debug_srcinfo 0 : { *(.debug_srcinfo) } \ | |
574 | .debug_sfnames 0 : { *(.debug_sfnames) } \ | |
575 | /* DWARF 1.1 and DWARF 2 */ \ | |
576 | .debug_aranges 0 : { *(.debug_aranges) } \ | |
577 | .debug_pubnames 0 : { *(.debug_pubnames) } \ | |
578 | /* DWARF 2 */ \ | |
579 | .debug_info 0 : { *(.debug_info \ | |
580 | .gnu.linkonce.wi.*) } \ | |
581 | .debug_abbrev 0 : { *(.debug_abbrev) } \ | |
582 | .debug_line 0 : { *(.debug_line) } \ | |
583 | .debug_frame 0 : { *(.debug_frame) } \ | |
584 | .debug_str 0 : { *(.debug_str) } \ | |
585 | .debug_loc 0 : { *(.debug_loc) } \ | |
586 | .debug_macinfo 0 : { *(.debug_macinfo) } \ | |
587 | /* SGI/MIPS DWARF 2 extensions */ \ | |
588 | .debug_weaknames 0 : { *(.debug_weaknames) } \ | |
589 | .debug_funcnames 0 : { *(.debug_funcnames) } \ | |
590 | .debug_typenames 0 : { *(.debug_typenames) } \ | |
591 | .debug_varnames 0 : { *(.debug_varnames) } \ | |
592 | ||
593 | /* Stabs debugging sections. */ | |
594 | #define STABS_DEBUG \ | |
595 | .stab 0 : { *(.stab) } \ | |
596 | .stabstr 0 : { *(.stabstr) } \ | |
597 | .stab.excl 0 : { *(.stab.excl) } \ | |
598 | .stab.exclstr 0 : { *(.stab.exclstr) } \ | |
599 | .stab.index 0 : { *(.stab.index) } \ | |
600 | .stab.indexstr 0 : { *(.stab.indexstr) } \ | |
601 | .comment 0 : { *(.comment) } | |
9c9b8b38 | 602 | |
6360b1fb | 603 | #ifdef CONFIG_GENERIC_BUG |
7664c5a1 JF |
604 | #define BUG_TABLE \ |
605 | . = ALIGN(8); \ | |
606 | __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ | |
c6de0026 | 607 | VMLINUX_SYMBOL(__start___bug_table) = .; \ |
7664c5a1 | 608 | *(__bug_table) \ |
c6de0026 | 609 | VMLINUX_SYMBOL(__stop___bug_table) = .; \ |
7664c5a1 | 610 | } |
6360b1fb JB |
611 | #else |
612 | #define BUG_TABLE | |
613 | #endif | |
7664c5a1 | 614 | |
63687a52 JB |
615 | #ifdef CONFIG_PM_TRACE |
616 | #define TRACEDATA \ | |
617 | . = ALIGN(4); \ | |
618 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ | |
c6de0026 | 619 | VMLINUX_SYMBOL(__tracedata_start) = .; \ |
63687a52 | 620 | *(.tracedata) \ |
c6de0026 | 621 | VMLINUX_SYMBOL(__tracedata_end) = .; \ |
63687a52 JB |
622 | } |
623 | #else | |
624 | #define TRACEDATA | |
625 | #endif | |
626 | ||
9c9b8b38 | 627 | #define NOTES \ |
cbe87121 RM |
628 | .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
629 | VMLINUX_SYMBOL(__start_notes) = .; \ | |
630 | *(.note.*) \ | |
631 | VMLINUX_SYMBOL(__stop_notes) = .; \ | |
632 | } | |
61ce1efe | 633 | |
ef53dae8 SR |
634 | #define INIT_SETUP(initsetup_align) \ |
635 | . = ALIGN(initsetup_align); \ | |
636 | VMLINUX_SYMBOL(__setup_start) = .; \ | |
637 | *(.init.setup) \ | |
638 | VMLINUX_SYMBOL(__setup_end) = .; | |
639 | ||
026cee00 PM |
640 | #define INIT_CALLS_LEVEL(level) \ |
641 | VMLINUX_SYMBOL(__initcall##level##_start) = .; \ | |
642 | *(.initcall##level##.init) \ | |
643 | *(.initcall##level##s.init) \ | |
61ce1efe | 644 | |
ef53dae8 SR |
645 | #define INIT_CALLS \ |
646 | VMLINUX_SYMBOL(__initcall_start) = .; \ | |
026cee00 PM |
647 | *(.initcallearly.init) \ |
648 | INIT_CALLS_LEVEL(0) \ | |
649 | INIT_CALLS_LEVEL(1) \ | |
650 | INIT_CALLS_LEVEL(2) \ | |
651 | INIT_CALLS_LEVEL(3) \ | |
652 | INIT_CALLS_LEVEL(4) \ | |
653 | INIT_CALLS_LEVEL(5) \ | |
654 | INIT_CALLS_LEVEL(rootfs) \ | |
655 | INIT_CALLS_LEVEL(6) \ | |
656 | INIT_CALLS_LEVEL(7) \ | |
ef53dae8 SR |
657 | VMLINUX_SYMBOL(__initcall_end) = .; |
658 | ||
659 | #define CON_INITCALL \ | |
660 | VMLINUX_SYMBOL(__con_initcall_start) = .; \ | |
661 | *(.con_initcall.init) \ | |
662 | VMLINUX_SYMBOL(__con_initcall_end) = .; | |
663 | ||
664 | #define SECURITY_INITCALL \ | |
665 | VMLINUX_SYMBOL(__security_initcall_start) = .; \ | |
666 | *(.security_initcall.init) \ | |
667 | VMLINUX_SYMBOL(__security_initcall_end) = .; | |
668 | ||
669 | #ifdef CONFIG_BLK_DEV_INITRD | |
670 | #define INIT_RAM_FS \ | |
d8826262 | 671 | . = ALIGN(4); \ |
ef53dae8 SR |
672 | VMLINUX_SYMBOL(__initramfs_start) = .; \ |
673 | *(.init.ramfs) \ | |
ffe8018c HB |
674 | . = ALIGN(8); \ |
675 | *(.init.ramfs.info) | |
ef53dae8 | 676 | #else |
eadfe219 | 677 | #define INIT_RAM_FS |
ef53dae8 SR |
678 | #endif |
679 | ||
023bf6f1 TH |
680 | /* |
681 | * Default discarded sections. | |
682 | * | |
683 | * Some archs want to discard exit text/data at runtime rather than | |
684 | * link time due to cross-section references such as alt instructions, | |
685 | * bug table, eh_frame, etc. DISCARDS must be the last of output | |
686 | * section definitions so that such archs put those in earlier section | |
687 | * definitions. | |
688 | */ | |
405d967d TH |
689 | #define DISCARDS \ |
690 | /DISCARD/ : { \ | |
691 | EXIT_TEXT \ | |
692 | EXIT_DATA \ | |
023bf6f1 | 693 | EXIT_CALL \ |
405d967d | 694 | *(.discard) \ |
c7f52cdc | 695 | *(.discard.*) \ |
405d967d TH |
696 | } |
697 | ||
6ea0c34d MF |
698 | /** |
699 | * PERCPU_INPUT - the percpu input sections | |
700 | * @cacheline: cacheline size | |
701 | * | |
702 | * The core percpu section names and core symbols which do not rely | |
703 | * directly upon load addresses. | |
704 | * | |
705 | * @cacheline is used to align subsections to avoid false cacheline | |
706 | * sharing between subsections for different purposes. | |
707 | */ | |
708 | #define PERCPU_INPUT(cacheline) \ | |
709 | VMLINUX_SYMBOL(__per_cpu_start) = .; \ | |
710 | *(.data..percpu..first) \ | |
711 | . = ALIGN(PAGE_SIZE); \ | |
712 | *(.data..percpu..page_aligned) \ | |
713 | . = ALIGN(cacheline); \ | |
714 | *(.data..percpu..readmostly) \ | |
715 | . = ALIGN(cacheline); \ | |
716 | *(.data..percpu) \ | |
717 | *(.data..percpu..shared_aligned) \ | |
718 | VMLINUX_SYMBOL(__per_cpu_end) = .; | |
719 | ||
3e5d8f97 | 720 | /** |
6b7c38d5 | 721 | * PERCPU_VADDR - define output section for percpu area |
19df0c2f | 722 | * @cacheline: cacheline size |
3e5d8f97 TH |
723 | * @vaddr: explicit base address (optional) |
724 | * @phdr: destination PHDR (optional) | |
725 | * | |
19df0c2f TH |
726 | * Macro which expands to output section for percpu area. |
727 | * | |
728 | * @cacheline is used to align subsections to avoid false cacheline | |
729 | * sharing between subsections for different purposes. | |
730 | * | |
731 | * If @vaddr is not blank, it specifies explicit base address and all | |
732 | * percpu symbols will be offset from the given address. If blank, | |
733 | * @vaddr always equals @laddr + LOAD_OFFSET. | |
3e5d8f97 TH |
734 | * |
735 | * @phdr defines the output PHDR to use if not blank. Be warned that | |
736 | * output PHDR is sticky. If @phdr is specified, the next output | |
737 | * section in the linker script will go there too. @phdr should have | |
738 | * a leading colon. | |
739 | * | |
3ac6cffe TH |
740 | * Note that this macros defines __per_cpu_load as an absolute symbol. |
741 | * If there is no need to put the percpu section at a predetermined | |
0415b00d | 742 | * address, use PERCPU_SECTION. |
3e5d8f97 | 743 | */ |
19df0c2f | 744 | #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
dba3d36b | 745 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
3d9a854c | 746 | .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ |
6b7c38d5 | 747 | - LOAD_OFFSET) { \ |
6ea0c34d | 748 | PERCPU_INPUT(cacheline) \ |
6b7c38d5 | 749 | } phdr \ |
3d9a854c | 750 | . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); |
3e5d8f97 TH |
751 | |
752 | /** | |
0415b00d | 753 | * PERCPU_SECTION - define output section for percpu area, simple version |
19df0c2f | 754 | * @cacheline: cacheline size |
3e5d8f97 | 755 | * |
0415b00d TH |
756 | * Align to PAGE_SIZE and outputs output section for percpu area. This |
757 | * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and | |
3e5d8f97 | 758 | * __per_cpu_start will be identical. |
3ac6cffe | 759 | * |
0415b00d | 760 | * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
19df0c2f TH |
761 | * except that __per_cpu_load is defined as a relative symbol against |
762 | * .data..percpu which is required for relocatable x86_32 configuration. | |
3e5d8f97 | 763 | */ |
0415b00d TH |
764 | #define PERCPU_SECTION(cacheline) \ |
765 | . = ALIGN(PAGE_SIZE); \ | |
3d9a854c | 766 | .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
3ac6cffe | 767 | VMLINUX_SYMBOL(__per_cpu_load) = .; \ |
6ea0c34d | 768 | PERCPU_INPUT(cacheline) \ |
3ac6cffe | 769 | } |
ef53dae8 SR |
770 | |
771 | ||
772 | /* | |
773 | * Definition of the high level *_SECTION macros | |
774 | * They will fit only a subset of the architectures | |
775 | */ | |
776 | ||
777 | ||
778 | /* | |
779 | * Writeable data. | |
780 | * All sections are combined in a single .data section. | |
781 | * The sections following CONSTRUCTORS are arranged so their | |
782 | * typical alignment matches. | |
783 | * A cacheline is typical/always less than a PAGE_SIZE so | |
784 | * the sections that has this restriction (or similar) | |
785 | * is located before the ones requiring PAGE_SIZE alignment. | |
786 | * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which | |
25985edc | 787 | * matches the requirement of PAGE_ALIGNED_DATA. |
ef53dae8 | 788 | * |
7923f90f | 789 | * use 0 as page_align if page_aligned data is not used */ |
73f1d939 | 790 | #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ |
ef53dae8 SR |
791 | . = ALIGN(PAGE_SIZE); \ |
792 | .data : AT(ADDR(.data) - LOAD_OFFSET) { \ | |
39a449d9 | 793 | INIT_TASK_DATA(inittask) \ |
1b208622 TA |
794 | NOSAVE_DATA \ |
795 | PAGE_ALIGNED_DATA(pagealigned) \ | |
ef53dae8 SR |
796 | CACHELINE_ALIGNED_DATA(cacheline) \ |
797 | READ_MOSTLY_DATA(cacheline) \ | |
798 | DATA_DATA \ | |
799 | CONSTRUCTORS \ | |
ef53dae8 SR |
800 | } |
801 | ||
802 | #define INIT_TEXT_SECTION(inittext_align) \ | |
803 | . = ALIGN(inittext_align); \ | |
804 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ | |
805 | VMLINUX_SYMBOL(_sinittext) = .; \ | |
806 | INIT_TEXT \ | |
807 | VMLINUX_SYMBOL(_einittext) = .; \ | |
808 | } | |
809 | ||
810 | #define INIT_DATA_SECTION(initsetup_align) \ | |
811 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ | |
812 | INIT_DATA \ | |
813 | INIT_SETUP(initsetup_align) \ | |
814 | INIT_CALLS \ | |
815 | CON_INITCALL \ | |
816 | SECURITY_INITCALL \ | |
817 | INIT_RAM_FS \ | |
818 | } | |
819 | ||
04e448d9 TA |
820 | #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
821 | . = ALIGN(sbss_align); \ | |
822 | VMLINUX_SYMBOL(__bss_start) = .; \ | |
823 | SBSS(sbss_align) \ | |
ef53dae8 | 824 | BSS(bss_align) \ |
04e448d9 TA |
825 | . = ALIGN(stop_align); \ |
826 | VMLINUX_SYMBOL(__bss_stop) = .; |