]> bbs.cooldavid.org Git - net-next-2.6.git/blame - include/asm-generic/vmlinux.lds.h
initramfs: fix initramfs size calculation
[net-next-2.6.git] / include / asm-generic / vmlinux.lds.h
CommitLineData
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
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16 * INIT_TEXT_SECTION(PAGE_SIZE)
17 * INIT_DATA_SECTION(...)
18 * PERCPU(PAGE_SIZE)
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
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34 * _end = .;
35 *
ef53dae8
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36 * STABS_DEBUG
37 * DWARF_DEBUG
023bf6f1
TH
38 *
39 * DISCARDS // must be the last
ef53dae8
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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
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AJ
55#ifndef SYMBOL_PREFIX
56#define VMLINUX_SYMBOL(sym) sym
57#else
58#define PASTE2(x,y) x##y
59#define PASTE(x,y) PASTE2(x,y)
60#define VMLINUX_SYMBOL(sym) PASTE(SYMBOL_PREFIX, sym)
1da177e4
LT
61#endif
62
6d30e3a8
SR
63/* Align . to a 8 byte boundary equals to maximum function alignment. */
64#define ALIGN_FUNCTION() . = ALIGN(8)
65
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SR
66/*
67 * Align to a 32 byte boundary equal to the
68 * alignment gcc 4.5 uses for a struct
69 */
70#define STRUCT_ALIGN() . = ALIGN(32)
71
eb8f6890
SR
72/* The actual configuration determine if the init/exit sections
73 * are handled as text/data or they can be discarded (which
74 * often happens at runtime)
75 */
76#ifdef CONFIG_HOTPLUG
77#define DEV_KEEP(sec) *(.dev##sec)
78#define DEV_DISCARD(sec)
79#else
80#define DEV_KEEP(sec)
81#define DEV_DISCARD(sec) *(.dev##sec)
82#endif
83
84#ifdef CONFIG_HOTPLUG_CPU
85#define CPU_KEEP(sec) *(.cpu##sec)
86#define CPU_DISCARD(sec)
87#else
88#define CPU_KEEP(sec)
89#define CPU_DISCARD(sec) *(.cpu##sec)
90#endif
91
1a3fb6d4 92#if defined(CONFIG_MEMORY_HOTPLUG)
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93#define MEM_KEEP(sec) *(.mem##sec)
94#define MEM_DISCARD(sec)
95#else
96#define MEM_KEEP(sec)
97#define MEM_DISCARD(sec) *(.mem##sec)
98#endif
99
8da3821b 100#ifdef CONFIG_FTRACE_MCOUNT_RECORD
4b3b4c5e
JR
101#define MCOUNT_REC() . = ALIGN(8); \
102 VMLINUX_SYMBOL(__start_mcount_loc) = .; \
8da3821b
SR
103 *(__mcount_loc) \
104 VMLINUX_SYMBOL(__stop_mcount_loc) = .;
105#else
106#define MCOUNT_REC()
107#endif
eb8f6890 108
2ed84eeb 109#ifdef CONFIG_TRACE_BRANCH_PROFILING
45b79749
SR
110#define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
111 *(_ftrace_annotated_branch) \
112 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
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SR
113#else
114#define LIKELY_PROFILE()
115#endif
116
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SR
117#ifdef CONFIG_PROFILE_ALL_BRANCHES
118#define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \
119 *(_ftrace_branch) \
120 VMLINUX_SYMBOL(__stop_branch_profile) = .;
121#else
122#define BRANCH_PROFILE()
123#endif
124
5f77a88b 125#ifdef CONFIG_EVENT_TRACING
b77e38aa
SR
126#define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .; \
127 *(_ftrace_events) \
128 VMLINUX_SYMBOL(__stop_ftrace_events) = .;
129#else
130#define FTRACE_EVENTS()
131#endif
132
1ba28e02
LJ
133#ifdef CONFIG_TRACING
134#define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \
135 *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
136 VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
137#else
138#define TRACE_PRINTKS()
139#endif
140
bed1ffca
FW
141#ifdef CONFIG_FTRACE_SYSCALLS
142#define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
143 *(__syscalls_metadata) \
144 VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
145#else
146#define TRACE_SYSCALLS()
147#endif
148
ca967258
SR
149/* .data section */
150#define DATA_DATA \
0e0d314e 151 *(.data) \
312b1485 152 *(.ref.data) \
eb8f6890
SR
153 DEV_KEEP(init.data) \
154 DEV_KEEP(exit.data) \
155 CPU_KEEP(init.data) \
156 CPU_KEEP(exit.data) \
157 MEM_KEEP(init.data) \
158 MEM_KEEP(exit.data) \
8256e47c
MD
159 . = ALIGN(8); \
160 VMLINUX_SYMBOL(__start___markers) = .; \
161 *(__markers) \
97e1c18e 162 VMLINUX_SYMBOL(__stop___markers) = .; \
7e066fb8 163 . = ALIGN(32); \
97e1c18e
MD
164 VMLINUX_SYMBOL(__start___tracepoints) = .; \
165 *(__tracepoints) \
1f0d69a9 166 VMLINUX_SYMBOL(__stop___tracepoints) = .; \
e9d376f0
JB
167 /* implement dynamic printk debug */ \
168 . = ALIGN(8); \
169 VMLINUX_SYMBOL(__start___verbose) = .; \
170 *(__verbose) \
171 VMLINUX_SYMBOL(__stop___verbose) = .; \
2bcd521a 172 LIKELY_PROFILE() \
b77e38aa 173 BRANCH_PROFILE() \
8a20d84d 174 TRACE_PRINTKS() \
07fca0e5
SR
175 \
176 STRUCT_ALIGN(); \
bed1ffca 177 FTRACE_EVENTS() \
07fca0e5
SR
178 \
179 STRUCT_ALIGN(); \
bed1ffca 180 TRACE_SYSCALLS()
ca967258 181
ef53dae8
SR
182/*
183 * Data section helpers
184 */
185#define NOSAVE_DATA \
186 . = ALIGN(PAGE_SIZE); \
187 VMLINUX_SYMBOL(__nosave_begin) = .; \
07b3bb1e 188 *(.data..nosave) \
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SR
189 . = ALIGN(PAGE_SIZE); \
190 VMLINUX_SYMBOL(__nosave_end) = .;
191
192#define PAGE_ALIGNED_DATA(page_align) \
193 . = ALIGN(page_align); \
75b13483 194 *(.data..page_aligned)
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SR
195
196#define READ_MOSTLY_DATA(align) \
197 . = ALIGN(align); \
54cb27a7 198 *(.data..read_mostly)
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199
200#define CACHELINE_ALIGNED_DATA(align) \
201 . = ALIGN(align); \
4af57b78 202 *(.data..cacheline_aligned)
ef53dae8 203
39a449d9 204#define INIT_TASK_DATA(align) \
ef53dae8 205 . = ALIGN(align); \
2af7687f 206 *(.data..init_task)
ef53dae8
SR
207
208/*
209 * Read only Data
210 */
211#define RO_DATA_SECTION(align) \
4096b46f 212 . = ALIGN((align)); \
1da177e4 213 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
6569580d 214 VMLINUX_SYMBOL(__start_rodata) = .; \
1da177e4
LT
215 *(.rodata) *(.rodata.*) \
216 *(__vermagic) /* Kernel version magic */ \
8256e47c 217 *(__markers_strings) /* Markers: strings */ \
97e1c18e 218 *(__tracepoints_strings)/* Tracepoints: strings */ \
1da177e4
LT
219 } \
220 \
221 .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
222 *(.rodata1) \
223 } \
224 \
6360b1fb
JB
225 BUG_TABLE \
226 \
1da177e4
LT
227 /* PCI quirks */ \
228 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
229 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
230 *(.pci_fixup_early) \
231 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
232 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
233 *(.pci_fixup_header) \
234 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
235 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
236 *(.pci_fixup_final) \
237 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
238 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
239 *(.pci_fixup_enable) \
240 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
1597cacb
AC
241 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
242 *(.pci_fixup_resume) \
243 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
e1a2a51e
RW
244 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
245 *(.pci_fixup_resume_early) \
246 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
247 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
248 *(.pci_fixup_suspend) \
249 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
1da177e4
LT
250 } \
251 \
5658c769
DW
252 /* Built-in firmware blobs */ \
253 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
254 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
255 *(.builtin_fw) \
256 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
257 } \
258 \
394b701c 259 /* RapidIO route ops */ \
e5cabeb3 260 .rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \
058f88d6
AB
261 VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \
262 *(.rio_switch_ops) \
263 VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \
394b701c
MP
264 } \
265 \
63687a52
JB
266 TRACEDATA \
267 \
1da177e4
LT
268 /* Kernel symbol table: Normal symbols */ \
269 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
270 VMLINUX_SYMBOL(__start___ksymtab) = .; \
271 *(__ksymtab) \
272 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
273 } \
274 \
275 /* Kernel symbol table: GPL-only symbols */ \
276 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
277 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
278 *(__ksymtab_gpl) \
279 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
280 } \
281 \
f71d20e9
AV
282 /* Kernel symbol table: Normal unused symbols */ \
283 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
284 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
285 *(__ksymtab_unused) \
286 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
287 } \
288 \
289 /* Kernel symbol table: GPL-only unused symbols */ \
290 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
291 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
292 *(__ksymtab_unused_gpl) \
293 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
294 } \
295 \
9f28bb7e
GKH
296 /* Kernel symbol table: GPL-future-only symbols */ \
297 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
298 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
299 *(__ksymtab_gpl_future) \
300 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
301 } \
302 \
1da177e4
LT
303 /* Kernel symbol table: Normal symbols */ \
304 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
305 VMLINUX_SYMBOL(__start___kcrctab) = .; \
306 *(__kcrctab) \
307 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
308 } \
309 \
310 /* Kernel symbol table: GPL-only symbols */ \
311 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
312 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
313 *(__kcrctab_gpl) \
314 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
315 } \
316 \
f71d20e9
AV
317 /* Kernel symbol table: Normal unused symbols */ \
318 __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
319 VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
320 *(__kcrctab_unused) \
321 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
322 } \
323 \
324 /* Kernel symbol table: GPL-only unused symbols */ \
325 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
326 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
327 *(__kcrctab_unused_gpl) \
328 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
329 } \
330 \
9f28bb7e
GKH
331 /* Kernel symbol table: GPL-future-only symbols */ \
332 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
333 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
334 *(__kcrctab_gpl_future) \
335 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
336 } \
337 \
1da177e4
LT
338 /* Kernel symbol table: strings */ \
339 __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
340 *(__ksymtab_strings) \
341 } \
342 \
eb8f6890
SR
343 /* __*init sections */ \
344 __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
312b1485 345 *(.ref.rodata) \
eb8f6890
SR
346 DEV_KEEP(init.rodata) \
347 DEV_KEEP(exit.rodata) \
348 CPU_KEEP(init.rodata) \
349 CPU_KEEP(exit.rodata) \
350 MEM_KEEP(init.rodata) \
351 MEM_KEEP(exit.rodata) \
352 } \
353 \
1da177e4
LT
354 /* Built-in module parameters. */ \
355 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
356 VMLINUX_SYMBOL(__start___param) = .; \
357 *(__param) \
358 VMLINUX_SYMBOL(__stop___param) = .; \
edeed305 359 . = ALIGN((align)); \
6569580d 360 VMLINUX_SYMBOL(__end_rodata) = .; \
7583ddfd 361 } \
4096b46f
SR
362 . = ALIGN((align));
363
ef53dae8 364/* RODATA & RO_DATA provided for backward compatibility.
4096b46f 365 * All archs are supposed to use RO_DATA() */
ef53dae8
SR
366#define RODATA RO_DATA_SECTION(4096)
367#define RO_DATA(align) RO_DATA_SECTION(align)
1da177e4
LT
368
369#define SECURITY_INIT \
60bad7fa 370 .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
1da177e4
LT
371 VMLINUX_SYMBOL(__security_initcall_start) = .; \
372 *(.security_initcall.init) \
373 VMLINUX_SYMBOL(__security_initcall_end) = .; \
374 }
375
7664709b
SR
376/* .text section. Map to function alignment to avoid address changes
377 * during second ld run in second ld pass when generating System.map */
378#define TEXT_TEXT \
379 ALIGN_FUNCTION(); \
fb5e2b37 380 *(.text.hot) \
0e0d314e 381 *(.text) \
312b1485 382 *(.ref.text) \
eb8f6890
SR
383 DEV_KEEP(init.text) \
384 DEV_KEEP(exit.text) \
385 CPU_KEEP(init.text) \
386 CPU_KEEP(exit.text) \
387 MEM_KEEP(init.text) \
fb5e2b37
JB
388 MEM_KEEP(exit.text) \
389 *(.text.unlikely)
eb8f6890 390
7664709b 391
6d30e3a8
SR
392/* sched.text is aling to function alignment to secure we have same
393 * address even at second ld pass when generating System.map */
1da177e4 394#define SCHED_TEXT \
6d30e3a8 395 ALIGN_FUNCTION(); \
1da177e4
LT
396 VMLINUX_SYMBOL(__sched_text_start) = .; \
397 *(.sched.text) \
398 VMLINUX_SYMBOL(__sched_text_end) = .;
399
6d30e3a8
SR
400/* spinlock.text is aling to function alignment to secure we have same
401 * address even at second ld pass when generating System.map */
1da177e4 402#define LOCK_TEXT \
6d30e3a8 403 ALIGN_FUNCTION(); \
1da177e4
LT
404 VMLINUX_SYMBOL(__lock_text_start) = .; \
405 *(.spinlock.text) \
406 VMLINUX_SYMBOL(__lock_text_end) = .;
d0aaff97
PP
407
408#define KPROBES_TEXT \
409 ALIGN_FUNCTION(); \
410 VMLINUX_SYMBOL(__kprobes_text_start) = .; \
411 *(.kprobes.text) \
412 VMLINUX_SYMBOL(__kprobes_text_end) = .;
a7d0c210 413
a0343e82
FW
414#ifdef CONFIG_FUNCTION_GRAPH_TRACER
415#define IRQENTRY_TEXT \
416 ALIGN_FUNCTION(); \
417 VMLINUX_SYMBOL(__irqentry_text_start) = .; \
418 *(.irqentry.text) \
419 VMLINUX_SYMBOL(__irqentry_text_end) = .;
420#else
421#define IRQENTRY_TEXT
422#endif
423
37c514e3 424/* Section used for early init (in .S files) */
7923f90f 425#define HEAD_TEXT *(.head.text)
37c514e3 426
7923f90f 427#define HEAD_TEXT_SECTION \
ef53dae8
SR
428 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \
429 HEAD_TEXT \
430 }
431
432/*
433 * Exception table
434 */
435#define EXCEPTION_TABLE(align) \
436 . = ALIGN(align); \
437 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
438 VMLINUX_SYMBOL(__start___ex_table) = .; \
439 *(__ex_table) \
440 VMLINUX_SYMBOL(__stop___ex_table) = .; \
441 }
442
443/*
444 * Init task
445 */
39a449d9 446#define INIT_TASK_DATA_SECTION(align) \
ef53dae8 447 . = ALIGN(align); \
da5e37ef 448 .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \
39a449d9 449 INIT_TASK_DATA(align) \
ef53dae8 450 }
37c514e3 451
b99b87f7 452#ifdef CONFIG_CONSTRUCTORS
2a2325e6
HC
453#define KERNEL_CTORS() . = ALIGN(8); \
454 VMLINUX_SYMBOL(__ctors_start) = .; \
b99b87f7
PO
455 *(.ctors) \
456 VMLINUX_SYMBOL(__ctors_end) = .;
457#else
458#define KERNEL_CTORS()
459#endif
460
01ba2bdc 461/* init and exit section handling */
eb8f6890
SR
462#define INIT_DATA \
463 *(.init.data) \
464 DEV_DISCARD(init.data) \
eb8f6890 465 CPU_DISCARD(init.data) \
eb8f6890 466 MEM_DISCARD(init.data) \
b99b87f7 467 KERNEL_CTORS() \
fd6c3a8d 468 *(.init.rodata) \
4b3b4c5e 469 MCOUNT_REC() \
fd6c3a8d
JB
470 DEV_DISCARD(init.rodata) \
471 CPU_DISCARD(init.rodata) \
e9d376f0 472 MEM_DISCARD(init.rodata)
eb8f6890
SR
473
474#define INIT_TEXT \
475 *(.init.text) \
476 DEV_DISCARD(init.text) \
477 CPU_DISCARD(init.text) \
478 MEM_DISCARD(init.text)
479
480#define EXIT_DATA \
481 *(.exit.data) \
482 DEV_DISCARD(exit.data) \
483 DEV_DISCARD(exit.rodata) \
484 CPU_DISCARD(exit.data) \
485 CPU_DISCARD(exit.rodata) \
486 MEM_DISCARD(exit.data) \
487 MEM_DISCARD(exit.rodata)
01ba2bdc 488
eb8f6890
SR
489#define EXIT_TEXT \
490 *(.exit.text) \
491 DEV_DISCARD(exit.text) \
492 CPU_DISCARD(exit.text) \
493 MEM_DISCARD(exit.text)
01ba2bdc 494
7923f90f
SR
495#define EXIT_CALL \
496 *(.exitcall.exit)
497
ef53dae8
SR
498/*
499 * bss (Block Started by Symbol) - uninitialized data
500 * zeroed during startup
501 */
04e448d9
TA
502#define SBSS(sbss_align) \
503 . = ALIGN(sbss_align); \
ef53dae8
SR
504 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
505 *(.sbss) \
506 *(.scommon) \
507 }
508
509#define BSS(bss_align) \
510 . = ALIGN(bss_align); \
511 .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \
7c74df07 512 *(.bss..page_aligned) \
ef53dae8
SR
513 *(.dynbss) \
514 *(.bss) \
515 *(COMMON) \
ef53dae8
SR
516 }
517
518/*
519 * DWARF debug sections.
520 * Symbols in the DWARF debugging sections are relative to
521 * the beginning of the section so we begin them at 0.
522 */
a7d0c210
PBG
523#define DWARF_DEBUG \
524 /* DWARF 1 */ \
525 .debug 0 : { *(.debug) } \
526 .line 0 : { *(.line) } \
527 /* GNU DWARF 1 extensions */ \
528 .debug_srcinfo 0 : { *(.debug_srcinfo) } \
529 .debug_sfnames 0 : { *(.debug_sfnames) } \
530 /* DWARF 1.1 and DWARF 2 */ \
531 .debug_aranges 0 : { *(.debug_aranges) } \
532 .debug_pubnames 0 : { *(.debug_pubnames) } \
533 /* DWARF 2 */ \
534 .debug_info 0 : { *(.debug_info \
535 .gnu.linkonce.wi.*) } \
536 .debug_abbrev 0 : { *(.debug_abbrev) } \
537 .debug_line 0 : { *(.debug_line) } \
538 .debug_frame 0 : { *(.debug_frame) } \
539 .debug_str 0 : { *(.debug_str) } \
540 .debug_loc 0 : { *(.debug_loc) } \
541 .debug_macinfo 0 : { *(.debug_macinfo) } \
542 /* SGI/MIPS DWARF 2 extensions */ \
543 .debug_weaknames 0 : { *(.debug_weaknames) } \
544 .debug_funcnames 0 : { *(.debug_funcnames) } \
545 .debug_typenames 0 : { *(.debug_typenames) } \
546 .debug_varnames 0 : { *(.debug_varnames) } \
547
548 /* Stabs debugging sections. */
549#define STABS_DEBUG \
550 .stab 0 : { *(.stab) } \
551 .stabstr 0 : { *(.stabstr) } \
552 .stab.excl 0 : { *(.stab.excl) } \
553 .stab.exclstr 0 : { *(.stab.exclstr) } \
554 .stab.index 0 : { *(.stab.index) } \
555 .stab.indexstr 0 : { *(.stab.indexstr) } \
556 .comment 0 : { *(.comment) }
9c9b8b38 557
6360b1fb 558#ifdef CONFIG_GENERIC_BUG
7664c5a1
JF
559#define BUG_TABLE \
560 . = ALIGN(8); \
561 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
c6de0026 562 VMLINUX_SYMBOL(__start___bug_table) = .; \
7664c5a1 563 *(__bug_table) \
c6de0026 564 VMLINUX_SYMBOL(__stop___bug_table) = .; \
7664c5a1 565 }
6360b1fb
JB
566#else
567#define BUG_TABLE
568#endif
7664c5a1 569
63687a52
JB
570#ifdef CONFIG_PM_TRACE
571#define TRACEDATA \
572 . = ALIGN(4); \
573 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
c6de0026 574 VMLINUX_SYMBOL(__tracedata_start) = .; \
63687a52 575 *(.tracedata) \
c6de0026 576 VMLINUX_SYMBOL(__tracedata_end) = .; \
63687a52
JB
577 }
578#else
579#define TRACEDATA
580#endif
581
9c9b8b38 582#define NOTES \
cbe87121
RM
583 .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
584 VMLINUX_SYMBOL(__start_notes) = .; \
585 *(.note.*) \
586 VMLINUX_SYMBOL(__stop_notes) = .; \
587 }
61ce1efe 588
ef53dae8
SR
589#define INIT_SETUP(initsetup_align) \
590 . = ALIGN(initsetup_align); \
591 VMLINUX_SYMBOL(__setup_start) = .; \
592 *(.init.setup) \
593 VMLINUX_SYMBOL(__setup_end) = .;
594
61ce1efe 595#define INITCALLS \
c2147a50 596 *(.initcallearly.init) \
c6de0026 597 VMLINUX_SYMBOL(__early_initcall_end) = .; \
b3438f82
LT
598 *(.initcall0.init) \
599 *(.initcall0s.init) \
61ce1efe 600 *(.initcall1.init) \
735a7ffb 601 *(.initcall1s.init) \
61ce1efe 602 *(.initcall2.init) \
735a7ffb 603 *(.initcall2s.init) \
61ce1efe 604 *(.initcall3.init) \
735a7ffb 605 *(.initcall3s.init) \
61ce1efe 606 *(.initcall4.init) \
735a7ffb 607 *(.initcall4s.init) \
61ce1efe 608 *(.initcall5.init) \
735a7ffb 609 *(.initcall5s.init) \
8d610dd5 610 *(.initcallrootfs.init) \
61ce1efe 611 *(.initcall6.init) \
735a7ffb
AM
612 *(.initcall6s.init) \
613 *(.initcall7.init) \
614 *(.initcall7s.init)
61ce1efe 615
ef53dae8
SR
616#define INIT_CALLS \
617 VMLINUX_SYMBOL(__initcall_start) = .; \
618 INITCALLS \
619 VMLINUX_SYMBOL(__initcall_end) = .;
620
621#define CON_INITCALL \
622 VMLINUX_SYMBOL(__con_initcall_start) = .; \
623 *(.con_initcall.init) \
624 VMLINUX_SYMBOL(__con_initcall_end) = .;
625
626#define SECURITY_INITCALL \
627 VMLINUX_SYMBOL(__security_initcall_start) = .; \
628 *(.security_initcall.init) \
629 VMLINUX_SYMBOL(__security_initcall_end) = .;
630
631#ifdef CONFIG_BLK_DEV_INITRD
632#define INIT_RAM_FS \
633 . = ALIGN(PAGE_SIZE); \
634 VMLINUX_SYMBOL(__initramfs_start) = .; \
635 *(.init.ramfs) \
ffe8018c
HB
636 . = ALIGN(8); \
637 *(.init.ramfs.info)
ef53dae8 638#else
eadfe219 639#define INIT_RAM_FS
ef53dae8
SR
640#endif
641
023bf6f1
TH
642/*
643 * Default discarded sections.
644 *
645 * Some archs want to discard exit text/data at runtime rather than
646 * link time due to cross-section references such as alt instructions,
647 * bug table, eh_frame, etc. DISCARDS must be the last of output
648 * section definitions so that such archs put those in earlier section
649 * definitions.
650 */
405d967d
TH
651#define DISCARDS \
652 /DISCARD/ : { \
653 EXIT_TEXT \
654 EXIT_DATA \
023bf6f1 655 EXIT_CALL \
405d967d
TH
656 *(.discard) \
657 }
658
3e5d8f97 659/**
6b7c38d5 660 * PERCPU_VADDR - define output section for percpu area
3e5d8f97
TH
661 * @vaddr: explicit base address (optional)
662 * @phdr: destination PHDR (optional)
663 *
664 * Macro which expands to output section for percpu area. If @vaddr
665 * is not blank, it specifies explicit base address and all percpu
666 * symbols will be offset from the given address. If blank, @vaddr
667 * always equals @laddr + LOAD_OFFSET.
668 *
669 * @phdr defines the output PHDR to use if not blank. Be warned that
670 * output PHDR is sticky. If @phdr is specified, the next output
671 * section in the linker script will go there too. @phdr should have
672 * a leading colon.
673 *
3ac6cffe
TH
674 * Note that this macros defines __per_cpu_load as an absolute symbol.
675 * If there is no need to put the percpu section at a predetermined
676 * address, use PERCPU().
3e5d8f97
TH
677 */
678#define PERCPU_VADDR(vaddr, phdr) \
dba3d36b 679 VMLINUX_SYMBOL(__per_cpu_load) = .; \
3d9a854c 680 .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \
6b7c38d5
TH
681 - LOAD_OFFSET) { \
682 VMLINUX_SYMBOL(__per_cpu_start) = .; \
3d9a854c
DV
683 *(.data..percpu..first) \
684 *(.data..percpu..page_aligned) \
685 *(.data..percpu) \
686 *(.data..percpu..shared_aligned) \
6b7c38d5
TH
687 VMLINUX_SYMBOL(__per_cpu_end) = .; \
688 } phdr \
3d9a854c 689 . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
3e5d8f97
TH
690
691/**
692 * PERCPU - define output section for percpu area, simple version
693 * @align: required alignment
694 *
695 * Align to @align and outputs output section for percpu area. This
696 * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
697 * __per_cpu_start will be identical.
3ac6cffe
TH
698 *
699 * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
700 * that __per_cpu_load is defined as a relative symbol against
3d9a854c 701 * .data..percpu which is required for relocatable x86_32
3ac6cffe 702 * configuration.
3e5d8f97 703 */
5fb7dc37
FY
704#define PERCPU(align) \
705 . = ALIGN(align); \
3d9a854c 706 .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \
3ac6cffe
TH
707 VMLINUX_SYMBOL(__per_cpu_load) = .; \
708 VMLINUX_SYMBOL(__per_cpu_start) = .; \
3d9a854c
DV
709 *(.data..percpu..first) \
710 *(.data..percpu..page_aligned) \
711 *(.data..percpu) \
712 *(.data..percpu..shared_aligned) \
3ac6cffe
TH
713 VMLINUX_SYMBOL(__per_cpu_end) = .; \
714 }
ef53dae8
SR
715
716
717/*
718 * Definition of the high level *_SECTION macros
719 * They will fit only a subset of the architectures
720 */
721
722
723/*
724 * Writeable data.
725 * All sections are combined in a single .data section.
726 * The sections following CONSTRUCTORS are arranged so their
727 * typical alignment matches.
728 * A cacheline is typical/always less than a PAGE_SIZE so
729 * the sections that has this restriction (or similar)
730 * is located before the ones requiring PAGE_SIZE alignment.
731 * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
732 * matches the requirment of PAGE_ALIGNED_DATA.
733 *
7923f90f 734 * use 0 as page_align if page_aligned data is not used */
73f1d939 735#define RW_DATA_SECTION(cacheline, pagealigned, inittask) \
ef53dae8
SR
736 . = ALIGN(PAGE_SIZE); \
737 .data : AT(ADDR(.data) - LOAD_OFFSET) { \
39a449d9 738 INIT_TASK_DATA(inittask) \
1b208622
TA
739 NOSAVE_DATA \
740 PAGE_ALIGNED_DATA(pagealigned) \
ef53dae8
SR
741 CACHELINE_ALIGNED_DATA(cacheline) \
742 READ_MOSTLY_DATA(cacheline) \
743 DATA_DATA \
744 CONSTRUCTORS \
ef53dae8
SR
745 }
746
747#define INIT_TEXT_SECTION(inittext_align) \
748 . = ALIGN(inittext_align); \
749 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \
750 VMLINUX_SYMBOL(_sinittext) = .; \
751 INIT_TEXT \
752 VMLINUX_SYMBOL(_einittext) = .; \
753 }
754
755#define INIT_DATA_SECTION(initsetup_align) \
756 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \
757 INIT_DATA \
758 INIT_SETUP(initsetup_align) \
759 INIT_CALLS \
760 CON_INITCALL \
761 SECURITY_INITCALL \
762 INIT_RAM_FS \
763 }
764
04e448d9
TA
765#define BSS_SECTION(sbss_align, bss_align, stop_align) \
766 . = ALIGN(sbss_align); \
767 VMLINUX_SYMBOL(__bss_start) = .; \
768 SBSS(sbss_align) \
ef53dae8 769 BSS(bss_align) \
04e448d9
TA
770 . = ALIGN(stop_align); \
771 VMLINUX_SYMBOL(__bss_stop) = .;