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x86, mm: Fix incorrect data type in vmalloc_sync_all()
[deliverable/linux.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
ef53dae8
SR		 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
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
9e1b9b80
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
07fca0e5
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)
eb8f6890
SR		 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) = .;
1f0d69a9
SR		 113#else
114#define LIKELY_PROFILE()
115#endif
116
2bcd521a
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) \
7e066fb8 159 . = ALIGN(32); \
97e1c18e
MD		 160 VMLINUX_SYMBOL(__start___tracepoints) = .; \
161 *(__tracepoints) \
1f0d69a9 162 VMLINUX_SYMBOL(__stop___tracepoints) = .; \
e9d376f0
JB		 163 /* implement dynamic printk debug */ \
164 . = ALIGN(8); \
165 VMLINUX_SYMBOL(__start___verbose) = .; \
166 *(__verbose) \
167 VMLINUX_SYMBOL(__stop___verbose) = .; \
2bcd521a 168 LIKELY_PROFILE() \
b77e38aa 169 BRANCH_PROFILE() \
8a20d84d 170 TRACE_PRINTKS() \
07fca0e5
SR		 171 \
172 STRUCT_ALIGN(); \
bed1ffca 173 FTRACE_EVENTS() \
07fca0e5
SR		 174 \
175 STRUCT_ALIGN(); \
bed1ffca 176 TRACE_SYSCALLS()
ca967258 177
ef53dae8
SR		 178/*
179 * Data section helpers
180 */
181#define NOSAVE_DATA \
182 . = ALIGN(PAGE_SIZE); \
183 VMLINUX_SYMBOL(__nosave_begin) = .; \
07b3bb1e 184 *(.data..nosave) \
ef53dae8
SR		 185 . = ALIGN(PAGE_SIZE); \
186 VMLINUX_SYMBOL(__nosave_end) = .;
187
188#define PAGE_ALIGNED_DATA(page_align) \
189 . = ALIGN(page_align); \
75b13483 190 *(.data..page_aligned)
ef53dae8
SR		 191
192#define READ_MOSTLY_DATA(align) \
193 . = ALIGN(align); \
54cb27a7 194 *(.data..read_mostly)
ef53dae8
SR		 195
196#define CACHELINE_ALIGNED_DATA(align) \
197 . = ALIGN(align); \
4af57b78 198 *(.data..cacheline_aligned)
ef53dae8 199
39a449d9 200#define INIT_TASK_DATA(align) \
ef53dae8 201 . = ALIGN(align); \
2af7687f 202 *(.data..init_task)
ef53dae8
SR		 203
204/*
205 * Read only Data
206 */
207#define RO_DATA_SECTION(align) \
4096b46f 208 . = ALIGN((align)); \
1da177e4 209 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
6569580d 210 VMLINUX_SYMBOL(__start_rodata) = .; \
1da177e4
LT		 211 *(.rodata) *(.rodata.*) \
212 *(__vermagic) /* Kernel version magic */ \
8256e47c 213 *(__markers_strings) /* Markers: strings */ \
97e1c18e 214 *(__tracepoints_strings)/* Tracepoints: strings */ \
1da177e4
LT		 215 } \
216 \
217 .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
218 *(.rodata1) \
219 } \
220 \
6360b1fb
JB		 221 BUG_TABLE \
222 \
1da177e4
LT		 223 /* PCI quirks */ \
224 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
225 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
226 *(.pci_fixup_early) \
227 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
228 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
229 *(.pci_fixup_header) \
230 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
231 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
232 *(.pci_fixup_final) \
233 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
234 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
235 *(.pci_fixup_enable) \
236 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
1597cacb
AC		 237 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
238 *(.pci_fixup_resume) \
239 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
e1a2a51e
RW		 240 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
241 *(.pci_fixup_resume_early) \
242 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
243 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
244 *(.pci_fixup_suspend) \
245 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
1da177e4
LT		 246 } \
247 \
5658c769
DW		 248 /* Built-in firmware blobs */ \
249 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
250 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
251 *(.builtin_fw) \
252 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
253 } \
254 \
394b701c 255 /* RapidIO route ops */ \
e5cabeb3 256 .rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \
058f88d6
AB		 257 VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \
258 *(.rio_switch_ops) \
259 VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \
394b701c
MP		 260 } \
261 \
63687a52
JB		 262 TRACEDATA \
263 \
1da177e4
LT		 264 /* Kernel symbol table: Normal symbols */ \
265 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
266 VMLINUX_SYMBOL(__start___ksymtab) = .; \
267 *(__ksymtab) \
268 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
269 } \
270 \
271 /* Kernel symbol table: GPL-only symbols */ \
272 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
273 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
274 *(__ksymtab_gpl) \
275 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
276 } \
277 \
f71d20e9
AV		 278 /* Kernel symbol table: Normal unused symbols */ \
279 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
280 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
281 *(__ksymtab_unused) \
282 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
283 } \
284 \
285 /* Kernel symbol table: GPL-only unused symbols */ \
286 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
287 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
288 *(__ksymtab_unused_gpl) \
289 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
290 } \
291 \
9f28bb7e
GKH		 292 /* Kernel symbol table: GPL-future-only symbols */ \
293 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
294 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
295 *(__ksymtab_gpl_future) \
296 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
297 } \
298 \
1da177e4
LT		 299 /* Kernel symbol table: Normal symbols */ \
300 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
301 VMLINUX_SYMBOL(__start___kcrctab) = .; \
302 *(__kcrctab) \
303 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
304 } \
305 \
306 /* Kernel symbol table: GPL-only symbols */ \
307 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
308 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
309 *(__kcrctab_gpl) \
310 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
311 } \
312 \
f71d20e9
AV		 313 /* Kernel symbol table: Normal unused symbols */ \
314 __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
315 VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
316 *(__kcrctab_unused) \
317 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
318 } \
319 \
320 /* Kernel symbol table: GPL-only unused symbols */ \
321 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
322 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
323 *(__kcrctab_unused_gpl) \
324 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
325 } \
326 \
9f28bb7e
GKH		 327 /* Kernel symbol table: GPL-future-only symbols */ \
328 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
329 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
330 *(__kcrctab_gpl_future) \
331 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
332 } \
333 \
1da177e4
LT		 334 /* Kernel symbol table: strings */ \
335 __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
336 *(__ksymtab_strings) \
337 } \
338 \
eb8f6890
SR		 339 /* __*init sections */ \
340 __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
312b1485 341 *(.ref.rodata) \
eb8f6890
SR		 342 DEV_KEEP(init.rodata) \
343 DEV_KEEP(exit.rodata) \
344 CPU_KEEP(init.rodata) \
345 CPU_KEEP(exit.rodata) \
346 MEM_KEEP(init.rodata) \
347 MEM_KEEP(exit.rodata) \
348 } \
349 \
1da177e4
LT		 350 /* Built-in module parameters. */ \
351 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
352 VMLINUX_SYMBOL(__start___param) = .; \
353 *(__param) \
354 VMLINUX_SYMBOL(__stop___param) = .; \
edeed305 355 . = ALIGN((align)); \
6569580d 356 VMLINUX_SYMBOL(__end_rodata) = .; \
7583ddfd 357 } \
4096b46f
SR		 358 . = ALIGN((align));
359
ef53dae8 360/* RODATA & RO_DATA provided for backward compatibility.
4096b46f 361 * All archs are supposed to use RO_DATA() */
ef53dae8
SR		 362#define RODATA RO_DATA_SECTION(4096)
363#define RO_DATA(align) RO_DATA_SECTION(align)
1da177e4
LT		 364
365#define SECURITY_INIT \
60bad7fa 366 .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
1da177e4
LT		 367 VMLINUX_SYMBOL(__security_initcall_start) = .; \
368 *(.security_initcall.init) \
369 VMLINUX_SYMBOL(__security_initcall_end) = .; \
370 }
371
7664709b
SR		 372/* .text section. Map to function alignment to avoid address changes
373 * during second ld run in second ld pass when generating System.map */
374#define TEXT_TEXT \
375 ALIGN_FUNCTION(); \
fb5e2b37 376 *(.text.hot) \
0e0d314e 377 *(.text) \
312b1485 378 *(.ref.text) \
eb8f6890
SR		 379 DEV_KEEP(init.text) \
380 DEV_KEEP(exit.text) \
381 CPU_KEEP(init.text) \
382 CPU_KEEP(exit.text) \
383 MEM_KEEP(init.text) \
fb5e2b37
JB		 384 MEM_KEEP(exit.text) \
385 *(.text.unlikely)
eb8f6890 386
7664709b 387
6d30e3a8
SR		 388/* sched.text is aling to function alignment to secure we have same
389 * address even at second ld pass when generating System.map */
1da177e4 390#define SCHED_TEXT \
6d30e3a8 391 ALIGN_FUNCTION(); \
1da177e4
LT		 392 VMLINUX_SYMBOL(__sched_text_start) = .; \
393 *(.sched.text) \
394 VMLINUX_SYMBOL(__sched_text_end) = .;
395
6d30e3a8
SR		 396/* spinlock.text is aling to function alignment to secure we have same
397 * address even at second ld pass when generating System.map */
1da177e4 398#define LOCK_TEXT \
6d30e3a8 399 ALIGN_FUNCTION(); \
1da177e4
LT		 400 VMLINUX_SYMBOL(__lock_text_start) = .; \
401 *(.spinlock.text) \
402 VMLINUX_SYMBOL(__lock_text_end) = .;
d0aaff97
PP		 403
404#define KPROBES_TEXT \
405 ALIGN_FUNCTION(); \
406 VMLINUX_SYMBOL(__kprobes_text_start) = .; \
407 *(.kprobes.text) \
408 VMLINUX_SYMBOL(__kprobes_text_end) = .;
a7d0c210 409
a0343e82
FW		 410#ifdef CONFIG_FUNCTION_GRAPH_TRACER
411#define IRQENTRY_TEXT \
412 ALIGN_FUNCTION(); \
413 VMLINUX_SYMBOL(__irqentry_text_start) = .; \
414 *(.irqentry.text) \
415 VMLINUX_SYMBOL(__irqentry_text_end) = .;
416#else
417#define IRQENTRY_TEXT
418#endif
419
37c514e3 420/* Section used for early init (in .S files) */
7923f90f 421#define HEAD_TEXT *(.head.text)
37c514e3 422
7923f90f 423#define HEAD_TEXT_SECTION \
ef53dae8
SR		 424 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \
425 HEAD_TEXT \
426 }
427
428/*
429 * Exception table
430 */
431#define EXCEPTION_TABLE(align) \
432 . = ALIGN(align); \
433 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
434 VMLINUX_SYMBOL(__start___ex_table) = .; \
435 *(__ex_table) \
436 VMLINUX_SYMBOL(__stop___ex_table) = .; \
437 }
438
439/*
440 * Init task
441 */
39a449d9 442#define INIT_TASK_DATA_SECTION(align) \
ef53dae8 443 . = ALIGN(align); \
da5e37ef 444 .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \
39a449d9 445 INIT_TASK_DATA(align) \
ef53dae8 446 }
37c514e3 447
b99b87f7 448#ifdef CONFIG_CONSTRUCTORS
2a2325e6
HC		 449#define KERNEL_CTORS() . = ALIGN(8); \
450 VMLINUX_SYMBOL(__ctors_start) = .; \
b99b87f7
PO		 451 *(.ctors) \
452 VMLINUX_SYMBOL(__ctors_end) = .;
453#else
454#define KERNEL_CTORS()
455#endif
456
01ba2bdc 457/* init and exit section handling */
eb8f6890
SR		 458#define INIT_DATA \
459 *(.init.data) \
460 DEV_DISCARD(init.data) \
eb8f6890 461 CPU_DISCARD(init.data) \
eb8f6890 462 MEM_DISCARD(init.data) \
b99b87f7 463 KERNEL_CTORS() \
fd6c3a8d 464 *(.init.rodata) \
4b3b4c5e 465 MCOUNT_REC() \
fd6c3a8d
JB		 466 DEV_DISCARD(init.rodata) \
467 CPU_DISCARD(init.rodata) \
e9d376f0 468 MEM_DISCARD(init.rodata)
eb8f6890
SR		 469
470#define INIT_TEXT \
471 *(.init.text) \
472 DEV_DISCARD(init.text) \
473 CPU_DISCARD(init.text) \
474 MEM_DISCARD(init.text)
475
476#define EXIT_DATA \
477 *(.exit.data) \
478 DEV_DISCARD(exit.data) \
479 DEV_DISCARD(exit.rodata) \
480 CPU_DISCARD(exit.data) \
481 CPU_DISCARD(exit.rodata) \
482 MEM_DISCARD(exit.data) \
483 MEM_DISCARD(exit.rodata)
01ba2bdc 484
eb8f6890
SR		 485#define EXIT_TEXT \
486 *(.exit.text) \
487 DEV_DISCARD(exit.text) \
488 CPU_DISCARD(exit.text) \
489 MEM_DISCARD(exit.text)
01ba2bdc 490
7923f90f
SR		 491#define EXIT_CALL \
492 *(.exitcall.exit)
493
ef53dae8
SR		 494/*
495 * bss (Block Started by Symbol) - uninitialized data
496 * zeroed during startup
497 */
04e448d9
TA		 498#define SBSS(sbss_align) \
499 . = ALIGN(sbss_align); \
ef53dae8
SR		 500 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
501 *(.sbss) \
502 *(.scommon) \
503 }
504
505#define BSS(bss_align) \
506 . = ALIGN(bss_align); \
507 .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \
7c74df07 508 *(.bss..page_aligned) \
ef53dae8
SR		 509 *(.dynbss) \
510 *(.bss) \
511 *(COMMON) \
ef53dae8
SR		 512 }
513
514/*
515 * DWARF debug sections.
516 * Symbols in the DWARF debugging sections are relative to
517 * the beginning of the section so we begin them at 0.
518 */
a7d0c210
PBG		 519#define DWARF_DEBUG \
520 /* DWARF 1 */ \
521 .debug 0 : { *(.debug) } \
522 .line 0 : { *(.line) } \
523 /* GNU DWARF 1 extensions */ \
524 .debug_srcinfo 0 : { *(.debug_srcinfo) } \
525 .debug_sfnames 0 : { *(.debug_sfnames) } \
526 /* DWARF 1.1 and DWARF 2 */ \
527 .debug_aranges 0 : { *(.debug_aranges) } \
528 .debug_pubnames 0 : { *(.debug_pubnames) } \
529 /* DWARF 2 */ \
530 .debug_info 0 : { *(.debug_info \
531 .gnu.linkonce.wi.*) } \
532 .debug_abbrev 0 : { *(.debug_abbrev) } \
533 .debug_line 0 : { *(.debug_line) } \
534 .debug_frame 0 : { *(.debug_frame) } \
535 .debug_str 0 : { *(.debug_str) } \
536 .debug_loc 0 : { *(.debug_loc) } \
537 .debug_macinfo 0 : { *(.debug_macinfo) } \
538 /* SGI/MIPS DWARF 2 extensions */ \
539 .debug_weaknames 0 : { *(.debug_weaknames) } \
540 .debug_funcnames 0 : { *(.debug_funcnames) } \
541 .debug_typenames 0 : { *(.debug_typenames) } \
542 .debug_varnames 0 : { *(.debug_varnames) } \
543
544 /* Stabs debugging sections. */
545#define STABS_DEBUG \
546 .stab 0 : { *(.stab) } \
547 .stabstr 0 : { *(.stabstr) } \
548 .stab.excl 0 : { *(.stab.excl) } \
549 .stab.exclstr 0 : { *(.stab.exclstr) } \
550 .stab.index 0 : { *(.stab.index) } \
551 .stab.indexstr 0 : { *(.stab.indexstr) } \
552 .comment 0 : { *(.comment) }
9c9b8b38 553
6360b1fb 554#ifdef CONFIG_GENERIC_BUG
7664c5a1
JF		 555#define BUG_TABLE \
556 . = ALIGN(8); \
557 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
c6de0026 558 VMLINUX_SYMBOL(__start___bug_table) = .; \
7664c5a1 559 *(__bug_table) \
c6de0026 560 VMLINUX_SYMBOL(__stop___bug_table) = .; \
7664c5a1 561 }
6360b1fb
JB		 562#else
563#define BUG_TABLE
564#endif
7664c5a1 565
63687a52
JB		 566#ifdef CONFIG_PM_TRACE
567#define TRACEDATA \
568 . = ALIGN(4); \
569 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
c6de0026 570 VMLINUX_SYMBOL(__tracedata_start) = .; \
63687a52 571 *(.tracedata) \
c6de0026 572 VMLINUX_SYMBOL(__tracedata_end) = .; \
63687a52
JB		 573 }
574#else
575#define TRACEDATA
576#endif
577
9c9b8b38 578#define NOTES \
cbe87121
RM		 579 .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
580 VMLINUX_SYMBOL(__start_notes) = .; \
581 *(.note.*) \
582 VMLINUX_SYMBOL(__stop_notes) = .; \
583 }
61ce1efe 584
ef53dae8
SR		 585#define INIT_SETUP(initsetup_align) \
586 . = ALIGN(initsetup_align); \
587 VMLINUX_SYMBOL(__setup_start) = .; \
588 *(.init.setup) \
589 VMLINUX_SYMBOL(__setup_end) = .;
590
61ce1efe 591#define INITCALLS \
c2147a50 592 *(.initcallearly.init) \
c6de0026 593 VMLINUX_SYMBOL(__early_initcall_end) = .; \
b3438f82
LT		 594 *(.initcall0.init) \
595 *(.initcall0s.init) \
61ce1efe 596 *(.initcall1.init) \
735a7ffb 597 *(.initcall1s.init) \
61ce1efe 598 *(.initcall2.init) \
735a7ffb 599 *(.initcall2s.init) \
61ce1efe 600 *(.initcall3.init) \
735a7ffb 601 *(.initcall3s.init) \
61ce1efe 602 *(.initcall4.init) \
735a7ffb 603 *(.initcall4s.init) \
61ce1efe 604 *(.initcall5.init) \
735a7ffb 605 *(.initcall5s.init) \
8d610dd5 606 *(.initcallrootfs.init) \
61ce1efe 607 *(.initcall6.init) \
735a7ffb
AM		 608 *(.initcall6s.init) \
609 *(.initcall7.init) \
610 *(.initcall7s.init)
61ce1efe 611
ef53dae8
SR		 612#define INIT_CALLS \
613 VMLINUX_SYMBOL(__initcall_start) = .; \
614 INITCALLS \
615 VMLINUX_SYMBOL(__initcall_end) = .;
616
617#define CON_INITCALL \
618 VMLINUX_SYMBOL(__con_initcall_start) = .; \
619 *(.con_initcall.init) \
620 VMLINUX_SYMBOL(__con_initcall_end) = .;
621
622#define SECURITY_INITCALL \
623 VMLINUX_SYMBOL(__security_initcall_start) = .; \
624 *(.security_initcall.init) \
625 VMLINUX_SYMBOL(__security_initcall_end) = .;
626
627#ifdef CONFIG_BLK_DEV_INITRD
628#define INIT_RAM_FS \
629 . = ALIGN(PAGE_SIZE); \
630 VMLINUX_SYMBOL(__initramfs_start) = .; \
631 *(.init.ramfs) \
632 VMLINUX_SYMBOL(__initramfs_end) = .;
633#else
eadfe219 634#define INIT_RAM_FS
ef53dae8
SR		 635#endif
636
023bf6f1
TH		 637/*
638 * Default discarded sections.
639 *
640 * Some archs want to discard exit text/data at runtime rather than
641 * link time due to cross-section references such as alt instructions,
642 * bug table, eh_frame, etc. DISCARDS must be the last of output
643 * section definitions so that such archs put those in earlier section
644 * definitions.
645 */
405d967d
TH		 646#define DISCARDS \
647 /DISCARD/ : { \
648 EXIT_TEXT \
649 EXIT_DATA \
023bf6f1 650 EXIT_CALL \
405d967d 651 *(.discard) \
c7f52cdc 652 *(.discard.*) \
405d967d
TH		 653 }
654
3e5d8f97 655/**
6b7c38d5 656 * PERCPU_VADDR - define output section for percpu area
3e5d8f97
TH		 657 * @vaddr: explicit base address (optional)
658 * @phdr: destination PHDR (optional)
659 *
660 * Macro which expands to output section for percpu area. If @vaddr
661 * is not blank, it specifies explicit base address and all percpu
662 * symbols will be offset from the given address. If blank, @vaddr
663 * always equals @laddr + LOAD_OFFSET.
664 *
665 * @phdr defines the output PHDR to use if not blank. Be warned that
666 * output PHDR is sticky. If @phdr is specified, the next output
667 * section in the linker script will go there too. @phdr should have
668 * a leading colon.
669 *
3ac6cffe
TH		 670 * Note that this macros defines __per_cpu_load as an absolute symbol.
671 * If there is no need to put the percpu section at a predetermined
672 * address, use PERCPU().
3e5d8f97
TH		 673 */
674#define PERCPU_VADDR(vaddr, phdr) \
dba3d36b 675 VMLINUX_SYMBOL(__per_cpu_load) = .; \
3d9a854c 676 .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \
6b7c38d5
TH		 677 - LOAD_OFFSET) { \
678 VMLINUX_SYMBOL(__per_cpu_start) = .; \
3d9a854c
DV		 679 *(.data..percpu..first) \
680 *(.data..percpu..page_aligned) \
681 *(.data..percpu) \
682 *(.data..percpu..shared_aligned) \
6b7c38d5
TH		 683 VMLINUX_SYMBOL(__per_cpu_end) = .; \
684 } phdr \
3d9a854c 685 . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
3e5d8f97
TH		 686
687/**
688 * PERCPU - define output section for percpu area, simple version
689 * @align: required alignment
690 *
691 * Align to @align and outputs output section for percpu area. This
692 * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
693 * __per_cpu_start will be identical.
3ac6cffe
TH		 694 *
695 * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
696 * that __per_cpu_load is defined as a relative symbol against
3d9a854c 697 * .data..percpu which is required for relocatable x86_32
3ac6cffe 698 * configuration.
3e5d8f97 699 */
5fb7dc37
FY		 700#define PERCPU(align) \
701 . = ALIGN(align); \
3d9a854c 702 .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \
3ac6cffe
TH		 703 VMLINUX_SYMBOL(__per_cpu_load) = .; \
704 VMLINUX_SYMBOL(__per_cpu_start) = .; \
3d9a854c
DV		 705 *(.data..percpu..first) \
706 *(.data..percpu..page_aligned) \
707 *(.data..percpu) \
708 *(.data..percpu..shared_aligned) \
3ac6cffe
TH		 709 VMLINUX_SYMBOL(__per_cpu_end) = .; \
710 }
ef53dae8
SR		 711
712
713/*
714 * Definition of the high level *_SECTION macros
715 * They will fit only a subset of the architectures
716 */
717
718
719/*
720 * Writeable data.
721 * All sections are combined in a single .data section.
722 * The sections following CONSTRUCTORS are arranged so their
723 * typical alignment matches.
724 * A cacheline is typical/always less than a PAGE_SIZE so
725 * the sections that has this restriction (or similar)
726 * is located before the ones requiring PAGE_SIZE alignment.
727 * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
728 * matches the requirment of PAGE_ALIGNED_DATA.
729 *
7923f90f 730 * use 0 as page_align if page_aligned data is not used */
73f1d939 731#define RW_DATA_SECTION(cacheline, pagealigned, inittask) \
ef53dae8
SR		 732 . = ALIGN(PAGE_SIZE); \
733 .data : AT(ADDR(.data) - LOAD_OFFSET) { \
39a449d9 734 INIT_TASK_DATA(inittask) \
1b208622
TA		 735 NOSAVE_DATA \
736 PAGE_ALIGNED_DATA(pagealigned) \
ef53dae8
SR		 737 CACHELINE_ALIGNED_DATA(cacheline) \
738 READ_MOSTLY_DATA(cacheline) \
739 DATA_DATA \
740 CONSTRUCTORS \
ef53dae8
SR		 741 }
742
743#define INIT_TEXT_SECTION(inittext_align) \
744 . = ALIGN(inittext_align); \
745 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \
746 VMLINUX_SYMBOL(_sinittext) = .; \
747 INIT_TEXT \
748 VMLINUX_SYMBOL(_einittext) = .; \
749 }
750
751#define INIT_DATA_SECTION(initsetup_align) \
752 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \
753 INIT_DATA \
754 INIT_SETUP(initsetup_align) \
755 INIT_CALLS \
756 CON_INITCALL \
757 SECURITY_INITCALL \
758 INIT_RAM_FS \
759 }
760
04e448d9
TA		 761#define BSS_SECTION(sbss_align, bss_align, stop_align) \
762 . = ALIGN(sbss_align); \
763 VMLINUX_SYMBOL(__bss_start) = .; \
764 SBSS(sbss_align) \
ef53dae8 765 BSS(bss_align) \
04e448d9
TA		 766 . = ALIGN(stop_align); \
767 VMLINUX_SYMBOL(__bss_stop) = .;
Linux kernel - Deliverables
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