blob: bc2121fa9132cc9cad2209cacee3896fdbeb5370 [file] [log] [blame]
Sam Ravnborgef53dae2009-06-07 20:46:37 +02001/*
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 = .;
Sam Ravnborg7923f902009-06-14 22:10:41 +020015 * HEAD_TEXT_SECTION
Sam Ravnborgef53dae2009-06-07 20:46:37 +020016 * INIT_TEXT_SECTION(PAGE_SIZE)
17 * INIT_DATA_SECTION(...)
Tejun Heo0415b00d12011-03-24 18:50:09 +010018 * PERCPU_SECTION(CACHELINE_SIZE)
Sam Ravnborgef53dae2009-06-07 20:46:37 +020019 * __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 *
Tim Abbott04e448d2009-07-12 18:23:33 -040033 * BSS_SECTION(0, 0, 0)
Sam Ravnborgef53dae2009-06-07 20:46:37 +020034 * _end = .;
35 *
Sam Ravnborgef53dae2009-06-07 20:46:37 +020036 * STABS_DEBUG
37 * DWARF_DEBUG
Tejun Heo023bf6f2009-07-09 11:27:40 +090038 *
39 * DISCARDS // must be the last
Sam Ravnborgef53dae2009-06-07 20:46:37 +020040 * }
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 */
Tim Abbottc80d4712009-04-25 22:10:56 -040050
Linus Torvalds1da177e2005-04-16 15:20:36 -070051#ifndef LOAD_OFFSET
52#define LOAD_OFFSET 0
53#endif
54
Rusty Russellb92021b2013-03-15 15:04:17 +103055#include <linux/export.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +000057/* Align . to a 8 byte boundary equals to maximum function alignment. */
58#define ALIGN_FUNCTION() . = ALIGN(8)
59
Sam Ravnborg07fca0e2010-07-10 08:35:00 +020060/*
61 * Align to a 32 byte boundary equal to the
62 * alignment gcc 4.5 uses for a struct
63 */
Dirk Brandewieaab94332010-12-22 11:57:26 -080064#define STRUCT_ALIGNMENT 32
65#define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT)
Sam Ravnborg07fca0e2010-07-10 08:35:00 +020066
Sam Ravnborgeb8f6892008-01-20 20:07:28 +010067/* 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 */
Sam Ravnborgeb8f6892008-01-20 20:07:28 +010071#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
Adrian Bunk1a3fb6d2008-01-24 22:20:18 +010079#if defined(CONFIG_MEMORY_HOTPLUG)
Sam Ravnborgeb8f6892008-01-20 20:07:28 +010080#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
Steven Rostedt8da38212008-08-14 15:45:07 -040087#ifdef CONFIG_FTRACE_MCOUNT_RECORD
John Reiser4b3b4c52009-07-27 11:23:50 -070088#define MCOUNT_REC() . = ALIGN(8); \
89 VMLINUX_SYMBOL(__start_mcount_loc) = .; \
Steven Rostedt8da38212008-08-14 15:45:07 -040090 *(__mcount_loc) \
91 VMLINUX_SYMBOL(__stop_mcount_loc) = .;
92#else
93#define MCOUNT_REC()
94#endif
Sam Ravnborgeb8f6892008-01-20 20:07:28 +010095
Steven Rostedt2ed84ee2008-11-12 15:24:24 -050096#ifdef CONFIG_TRACE_BRANCH_PROFILING
Steven Rostedt45b79742008-11-21 00:40:40 -050097#define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
98 *(_ftrace_annotated_branch) \
99 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
Steven Rostedt1f0d69a2008-11-12 00:14:39 -0500100#else
101#define LIKELY_PROFILE()
102#endif
103
Steven Rostedt2bcd5212008-11-21 01:30:54 -0500104#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
Tom Zanussi5f77a882009-04-08 03:14:01 -0500112#ifdef CONFIG_EVENT_TRACING
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500113#define FTRACE_EVENTS() . = ALIGN(8); \
114 VMLINUX_SYMBOL(__start_ftrace_events) = .; \
Steven Rostedtb77e38a2009-02-24 10:21:36 -0500115 *(_ftrace_events) \
116 VMLINUX_SYMBOL(__stop_ftrace_events) = .;
117#else
118#define FTRACE_EVENTS()
119#endif
120
Lai Jiangshan1ba28e02009-03-06 17:21:48 +0100121#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) = .;
Steven Rostedt (Red Hat)102c9322013-07-12 17:07:27 -0400125#define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \
126 *(__tracepoint_str) /* Trace_printk fmt' pointer */ \
127 VMLINUX_SYMBOL(__stop___tracepoint_str) = .;
Lai Jiangshan1ba28e02009-03-06 17:21:48 +0100128#else
129#define TRACE_PRINTKS()
Steven Rostedt (Red Hat)102c9322013-07-12 17:07:27 -0400130#define TRACEPOINT_STR()
Lai Jiangshan1ba28e02009-03-06 17:21:48 +0100131#endif
132
Frederic Weisbeckerbed1ffc2009-03-13 15:42:11 +0100133#ifdef CONFIG_FTRACE_SYSCALLS
Steven Rostedt3d56e332011-02-02 17:06:09 -0500134#define TRACE_SYSCALLS() . = ALIGN(8); \
135 VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
Frederic Weisbeckerbed1ffc2009-03-13 15:42:11 +0100136 *(__syscalls_metadata) \
137 VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
138#else
139#define TRACE_SYSCALLS()
140#endif
141
Stephen Warrenae278a92012-11-19 16:41:20 -0700142#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
Dirk Brandewieaab94332010-12-22 11:57:26 -0800150
Thomas Petazzonif6e916b2012-11-20 23:00:52 +0100151#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
Dirk Brandewieaab94332010-12-22 11:57:26 -0800160
Prashant Gaikwadf2f6c252013-01-04 12:30:52 +0530161#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
Dirk Brandewieaab94332010-12-22 11:57:26 -0800170#define KERNEL_DTB() \
171 STRUCT_ALIGN(); \
172 VMLINUX_SYMBOL(__dtb_start) = .; \
173 *(.dtb.init.rodata) \
174 VMLINUX_SYMBOL(__dtb_end) = .;
175
Sam Ravnborgca967252007-05-17 13:38:44 +0200176/* .data section */
177#define DATA_DATA \
Sam Ravnborg0e0d3142007-05-17 20:14:48 +0200178 *(.data) \
Sam Ravnborg312b1482008-01-28 20:21:15 +0100179 *(.ref.data) \
Mike Frysingerd356c0b2010-10-26 14:22:29 -0700180 *(.data..shared_aligned) /* percpu related */ \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100181 MEM_KEEP(init.data) \
182 MEM_KEEP(exit.data) \
Jan Beulich7ccaba52012-03-23 15:01:52 -0700183 *(.data.unlikely) \
Mathieu Desnoyers65498642011-01-26 17:26:22 -0500184 STRUCT_ALIGN(); \
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400185 *(__tracepoints) \
Jason Barone9d376f2009-02-05 11:51:38 -0500186 /* implement dynamic printk debug */ \
Jason Barond430d3d2011-03-16 17:29:47 -0400187 . = ALIGN(8); \
188 VMLINUX_SYMBOL(__start___jump_table) = .; \
189 *(__jump_table) \
190 VMLINUX_SYMBOL(__stop___jump_table) = .; \
Jason Barone9d376f2009-02-05 11:51:38 -0500191 . = ALIGN(8); \
192 VMLINUX_SYMBOL(__start___verbose) = .; \
193 *(__verbose) \
194 VMLINUX_SYMBOL(__stop___verbose) = .; \
Steven Rostedt2bcd5212008-11-21 01:30:54 -0500195 LIKELY_PROFILE() \
Steven Rostedtb77e38a2009-02-24 10:21:36 -0500196 BRANCH_PROFILE() \
Steven Rostedt (Red Hat)102c9322013-07-12 17:07:27 -0400197 TRACE_PRINTKS() \
198 TRACEPOINT_STR()
Sam Ravnborgca967252007-05-17 13:38:44 +0200199
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200200/*
201 * Data section helpers
202 */
203#define NOSAVE_DATA \
204 . = ALIGN(PAGE_SIZE); \
205 VMLINUX_SYMBOL(__nosave_begin) = .; \
Denys Vlasenko07b3bb12010-02-20 01:03:52 +0100206 *(.data..nosave) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200207 . = ALIGN(PAGE_SIZE); \
208 VMLINUX_SYMBOL(__nosave_end) = .;
209
210#define PAGE_ALIGNED_DATA(page_align) \
211 . = ALIGN(page_align); \
Tim Abbott75b13482010-02-20 01:03:37 +0100212 *(.data..page_aligned)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200213
214#define READ_MOSTLY_DATA(align) \
215 . = ALIGN(align); \
Shaohua Li83697442011-01-12 16:59:38 -0800216 *(.data..read_mostly) \
217 . = ALIGN(align);
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200218
219#define CACHELINE_ALIGNED_DATA(align) \
220 . = ALIGN(align); \
Tim Abbott4af57b72010-02-20 01:03:34 +0100221 *(.data..cacheline_aligned)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200222
Tim Abbott39a449d2009-06-23 18:53:15 -0400223#define INIT_TASK_DATA(align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200224 . = ALIGN(align); \
Tim Abbott2af76872010-02-20 01:03:35 +0100225 *(.data..init_task)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200226
227/*
228 * Read only Data
229 */
230#define RO_DATA_SECTION(align) \
Sam Ravnborg4096b462007-05-29 21:29:00 +0200231 . = ALIGN((align)); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
Vivek Goyal65695802006-12-07 02:14:03 +0100233 VMLINUX_SYMBOL(__start_rodata) = .; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700234 *(.rodata) *(.rodata.*) \
235 *(__vermagic) /* Kernel version magic */ \
Mathieu Desnoyers65498642011-01-26 17:26:22 -0500236 . = ALIGN(8); \
237 VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \
238 *(__tracepoints_ptrs) /* Tracepoints: pointer array */\
239 VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400240 *(__tracepoints_strings)/* Tracepoints: strings */ \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241 } \
242 \
243 .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
244 *(.rodata1) \
245 } \
246 \
Jan Beulich6360b1f2008-05-12 15:44:41 +0200247 BUG_TABLE \
248 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 /* PCI quirks */ \
250 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
251 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
252 *(.pci_fixup_early) \
253 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
254 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
255 *(.pci_fixup_header) \
256 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
257 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
258 *(.pci_fixup_final) \
259 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
260 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
261 *(.pci_fixup_enable) \
262 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
Alan Cox1597cac2006-12-04 15:14:45 -0800263 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
264 *(.pci_fixup_resume) \
265 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
Rafael J. Wysockie1a2a512008-05-15 21:51:31 +0200266 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
267 *(.pci_fixup_resume_early) \
268 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
269 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
270 *(.pci_fixup_suspend) \
271 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 } \
273 \
David Woodhouse5658c762008-05-23 13:52:42 +0100274 /* Built-in firmware blobs */ \
275 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
276 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
277 *(.builtin_fw) \
278 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
279 } \
280 \
Jan Beulich63687a52008-05-12 15:44:41 +0200281 TRACEDATA \
282 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 /* Kernel symbol table: Normal symbols */ \
284 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
285 VMLINUX_SYMBOL(__start___ksymtab) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200286 *(SORT(___ksymtab+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
288 } \
289 \
290 /* Kernel symbol table: GPL-only symbols */ \
291 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
292 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200293 *(SORT(___ksymtab_gpl+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
295 } \
296 \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700297 /* Kernel symbol table: Normal unused symbols */ \
298 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
299 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200300 *(SORT(___ksymtab_unused+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700301 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
302 } \
303 \
304 /* Kernel symbol table: GPL-only unused symbols */ \
305 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
306 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200307 *(SORT(___ksymtab_unused_gpl+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700308 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
309 } \
310 \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800311 /* Kernel symbol table: GPL-future-only symbols */ \
312 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
313 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200314 *(SORT(___ksymtab_gpl_future+*)) \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800315 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
316 } \
317 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 /* Kernel symbol table: Normal symbols */ \
319 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
320 VMLINUX_SYMBOL(__start___kcrctab) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200321 *(SORT(___kcrctab+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
323 } \
324 \
325 /* Kernel symbol table: GPL-only symbols */ \
326 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
327 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200328 *(SORT(___kcrctab_gpl+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
330 } \
331 \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700332 /* Kernel symbol table: Normal unused symbols */ \
333 __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
334 VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200335 *(SORT(___kcrctab_unused+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700336 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
337 } \
338 \
339 /* Kernel symbol table: GPL-only unused symbols */ \
340 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
341 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200342 *(SORT(___kcrctab_unused_gpl+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700343 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
344 } \
345 \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800346 /* Kernel symbol table: GPL-future-only symbols */ \
347 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
348 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200349 *(SORT(___kcrctab_gpl_future+*)) \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800350 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
351 } \
352 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 /* Kernel symbol table: strings */ \
354 __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
355 *(__ksymtab_strings) \
356 } \
357 \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100358 /* __*init sections */ \
359 __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
Sam Ravnborg312b1482008-01-28 20:21:15 +0100360 *(.ref.rodata) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100361 MEM_KEEP(init.rodata) \
362 MEM_KEEP(exit.rodata) \
363 } \
364 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 /* Built-in module parameters. */ \
366 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
367 VMLINUX_SYMBOL(__start___param) = .; \
368 *(__param) \
369 VMLINUX_SYMBOL(__stop___param) = .; \
Dmitry Torokhove94965e2010-12-15 14:00:19 -0800370 } \
371 \
372 /* Built-in module versions. */ \
373 __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \
374 VMLINUX_SYMBOL(__start___modver) = .; \
375 *(__modver) \
376 VMLINUX_SYMBOL(__stop___modver) = .; \
Arjan van de Venedeed302008-01-30 13:34:08 +0100377 . = ALIGN((align)); \
Vivek Goyal65695802006-12-07 02:14:03 +0100378 VMLINUX_SYMBOL(__end_rodata) = .; \
Marcelo Tosatti7583ddf2006-09-27 01:51:02 -0700379 } \
Sam Ravnborg4096b462007-05-29 21:29:00 +0200380 . = ALIGN((align));
381
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200382/* RODATA & RO_DATA provided for backward compatibility.
Sam Ravnborg4096b462007-05-29 21:29:00 +0200383 * All archs are supposed to use RO_DATA() */
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200384#define RODATA RO_DATA_SECTION(4096)
385#define RO_DATA(align) RO_DATA_SECTION(align)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700386
387#define SECURITY_INIT \
Eric W. Biederman60bad7f2005-06-25 14:57:46 -0700388 .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 VMLINUX_SYMBOL(__security_initcall_start) = .; \
390 *(.security_initcall.init) \
391 VMLINUX_SYMBOL(__security_initcall_end) = .; \
392 }
393
Sam Ravnborg76647092007-05-13 00:31:33 +0200394/* .text section. Map to function alignment to avoid address changes
395 * during second ld run in second ld pass when generating System.map */
396#define TEXT_TEXT \
397 ALIGN_FUNCTION(); \
Jan Beulichfb5e2b32008-06-18 12:36:01 +0100398 *(.text.hot) \
Sam Ravnborg0e0d3142007-05-17 20:14:48 +0200399 *(.text) \
Sam Ravnborg312b1482008-01-28 20:21:15 +0100400 *(.ref.text) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100401 MEM_KEEP(init.text) \
Jan Beulichfb5e2b32008-06-18 12:36:01 +0100402 MEM_KEEP(exit.text) \
403 *(.text.unlikely)
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100404
Sam Ravnborg76647092007-05-13 00:31:33 +0200405
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000406/* sched.text is aling to function alignment to secure we have same
407 * address even at second ld pass when generating System.map */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408#define SCHED_TEXT \
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000409 ALIGN_FUNCTION(); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 VMLINUX_SYMBOL(__sched_text_start) = .; \
411 *(.sched.text) \
412 VMLINUX_SYMBOL(__sched_text_end) = .;
413
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000414/* spinlock.text is aling to function alignment to secure we have same
415 * address even at second ld pass when generating System.map */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416#define LOCK_TEXT \
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000417 ALIGN_FUNCTION(); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 VMLINUX_SYMBOL(__lock_text_start) = .; \
419 *(.spinlock.text) \
420 VMLINUX_SYMBOL(__lock_text_end) = .;
Prasanna S Panchamukhid0aaff92005-09-06 15:19:26 -0700421
422#define KPROBES_TEXT \
423 ALIGN_FUNCTION(); \
424 VMLINUX_SYMBOL(__kprobes_text_start) = .; \
425 *(.kprobes.text) \
426 VMLINUX_SYMBOL(__kprobes_text_end) = .;
Paolo 'Blaisorblade' Giarrussoa7d0c212005-09-10 19:44:54 +0200427
Jiri Olsaea714542011-03-07 19:10:39 +0100428#define ENTRY_TEXT \
429 ALIGN_FUNCTION(); \
430 VMLINUX_SYMBOL(__entry_text_start) = .; \
431 *(.entry.text) \
432 VMLINUX_SYMBOL(__entry_text_end) = .;
433
Frederic Weisbeckera0343e82008-12-09 23:53:16 +0100434#ifdef CONFIG_FUNCTION_GRAPH_TRACER
435#define IRQENTRY_TEXT \
436 ALIGN_FUNCTION(); \
437 VMLINUX_SYMBOL(__irqentry_text_start) = .; \
438 *(.irqentry.text) \
439 VMLINUX_SYMBOL(__irqentry_text_end) = .;
440#else
441#define IRQENTRY_TEXT
442#endif
443
Sam Ravnborg37c514e2008-02-19 21:00:18 +0100444/* Section used for early init (in .S files) */
Sam Ravnborg7923f902009-06-14 22:10:41 +0200445#define HEAD_TEXT *(.head.text)
Sam Ravnborg37c514e2008-02-19 21:00:18 +0100446
Sam Ravnborg7923f902009-06-14 22:10:41 +0200447#define HEAD_TEXT_SECTION \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200448 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \
449 HEAD_TEXT \
450 }
451
452/*
453 * Exception table
454 */
455#define EXCEPTION_TABLE(align) \
456 . = ALIGN(align); \
457 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
458 VMLINUX_SYMBOL(__start___ex_table) = .; \
459 *(__ex_table) \
460 VMLINUX_SYMBOL(__stop___ex_table) = .; \
461 }
462
463/*
464 * Init task
465 */
Tim Abbott39a449d2009-06-23 18:53:15 -0400466#define INIT_TASK_DATA_SECTION(align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200467 . = ALIGN(align); \
Sam Ravnborgda5e37e2010-07-13 11:39:42 +0200468 .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \
Tim Abbott39a449d2009-06-23 18:53:15 -0400469 INIT_TASK_DATA(align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200470 }
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100471
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700472#ifdef CONFIG_CONSTRUCTORS
Heiko Carstens2a2325e2009-06-30 11:41:13 -0700473#define KERNEL_CTORS() . = ALIGN(8); \
474 VMLINUX_SYMBOL(__ctors_start) = .; \
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700475 *(.ctors) \
Frantisek Hrbataeb3057d2013-10-14 18:08:46 +1030476 *(.init_array) \
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700477 VMLINUX_SYMBOL(__ctors_end) = .;
478#else
479#define KERNEL_CTORS()
480#endif
481
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100482/* init and exit section handling */
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100483#define INIT_DATA \
484 *(.init.data) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100485 MEM_DISCARD(init.data) \
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700486 KERNEL_CTORS() \
John Reiser4b3b4c52009-07-27 11:23:50 -0700487 MCOUNT_REC() \
Steven Rostedt9fd49322012-04-24 22:32:06 -0400488 *(.init.rodata) \
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500489 FTRACE_EVENTS() \
Steven Rostedt3d56e332011-02-02 17:06:09 -0500490 TRACE_SYSCALLS() \
Dirk Brandewieaab94332010-12-22 11:57:26 -0800491 MEM_DISCARD(init.rodata) \
Prashant Gaikwadf2f6c252013-01-04 12:30:52 +0530492 CLK_OF_TABLES() \
Stephen Warrenae278a92012-11-19 16:41:20 -0700493 CLKSRC_OF_TABLES() \
Thomas Petazzonif6e916b2012-11-20 23:00:52 +0100494 KERNEL_DTB() \
495 IRQCHIP_OF_MATCH_TABLE()
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100496
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100497#define INIT_TEXT \
498 *(.init.text) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100499 MEM_DISCARD(init.text)
500
501#define EXIT_DATA \
502 *(.exit.data) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100503 MEM_DISCARD(exit.data) \
504 MEM_DISCARD(exit.rodata)
505
506#define EXIT_TEXT \
507 *(.exit.text) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100508 MEM_DISCARD(exit.text)
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100509
Sam Ravnborg7923f902009-06-14 22:10:41 +0200510#define EXIT_CALL \
511 *(.exitcall.exit)
512
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200513/*
514 * bss (Block Started by Symbol) - uninitialized data
515 * zeroed during startup
516 */
Tim Abbott04e448d2009-07-12 18:23:33 -0400517#define SBSS(sbss_align) \
518 . = ALIGN(sbss_align); \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200519 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
520 *(.sbss) \
521 *(.scommon) \
522 }
523
David Daneyc87728c2012-08-14 11:08:00 -0700524/*
525 * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
526 * sections to the front of bss.
527 */
528#ifndef BSS_FIRST_SECTIONS
529#define BSS_FIRST_SECTIONS
530#endif
531
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200532#define BSS(bss_align) \
533 . = ALIGN(bss_align); \
534 .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \
David Daneyc87728c2012-08-14 11:08:00 -0700535 BSS_FIRST_SECTIONS \
Tim Abbott7c74df02010-02-20 01:03:38 +0100536 *(.bss..page_aligned) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200537 *(.dynbss) \
538 *(.bss) \
539 *(COMMON) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200540 }
541
542/*
543 * DWARF debug sections.
544 * Symbols in the DWARF debugging sections are relative to
545 * the beginning of the section so we begin them at 0.
546 */
Paolo 'Blaisorblade' Giarrussoa7d0c212005-09-10 19:44:54 +0200547#define DWARF_DEBUG \
548 /* DWARF 1 */ \
549 .debug 0 : { *(.debug) } \
550 .line 0 : { *(.line) } \
551 /* GNU DWARF 1 extensions */ \
552 .debug_srcinfo 0 : { *(.debug_srcinfo) } \
553 .debug_sfnames 0 : { *(.debug_sfnames) } \
554 /* DWARF 1.1 and DWARF 2 */ \
555 .debug_aranges 0 : { *(.debug_aranges) } \
556 .debug_pubnames 0 : { *(.debug_pubnames) } \
557 /* DWARF 2 */ \
558 .debug_info 0 : { *(.debug_info \
559 .gnu.linkonce.wi.*) } \
560 .debug_abbrev 0 : { *(.debug_abbrev) } \
561 .debug_line 0 : { *(.debug_line) } \
562 .debug_frame 0 : { *(.debug_frame) } \
563 .debug_str 0 : { *(.debug_str) } \
564 .debug_loc 0 : { *(.debug_loc) } \
565 .debug_macinfo 0 : { *(.debug_macinfo) } \
566 /* SGI/MIPS DWARF 2 extensions */ \
567 .debug_weaknames 0 : { *(.debug_weaknames) } \
568 .debug_funcnames 0 : { *(.debug_funcnames) } \
569 .debug_typenames 0 : { *(.debug_typenames) } \
570 .debug_varnames 0 : { *(.debug_varnames) } \
571
572 /* Stabs debugging sections. */
573#define STABS_DEBUG \
574 .stab 0 : { *(.stab) } \
575 .stabstr 0 : { *(.stabstr) } \
576 .stab.excl 0 : { *(.stab.excl) } \
577 .stab.exclstr 0 : { *(.stab.exclstr) } \
578 .stab.index 0 : { *(.stab.index) } \
579 .stab.indexstr 0 : { *(.stab.indexstr) } \
580 .comment 0 : { *(.comment) }
Jeremy Fitzhardinge9c9b8b32006-09-25 23:32:26 -0700581
Jan Beulich6360b1f2008-05-12 15:44:41 +0200582#ifdef CONFIG_GENERIC_BUG
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800583#define BUG_TABLE \
584 . = ALIGN(8); \
585 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700586 VMLINUX_SYMBOL(__start___bug_table) = .; \
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800587 *(__bug_table) \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700588 VMLINUX_SYMBOL(__stop___bug_table) = .; \
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800589 }
Jan Beulich6360b1f2008-05-12 15:44:41 +0200590#else
591#define BUG_TABLE
592#endif
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800593
Jan Beulich63687a52008-05-12 15:44:41 +0200594#ifdef CONFIG_PM_TRACE
595#define TRACEDATA \
596 . = ALIGN(4); \
597 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700598 VMLINUX_SYMBOL(__tracedata_start) = .; \
Jan Beulich63687a52008-05-12 15:44:41 +0200599 *(.tracedata) \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700600 VMLINUX_SYMBOL(__tracedata_end) = .; \
Jan Beulich63687a52008-05-12 15:44:41 +0200601 }
602#else
603#define TRACEDATA
604#endif
605
Jeremy Fitzhardinge9c9b8b32006-09-25 23:32:26 -0700606#define NOTES \
Roland McGrathcbe87122007-07-19 01:48:36 -0700607 .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
608 VMLINUX_SYMBOL(__start_notes) = .; \
609 *(.note.*) \
610 VMLINUX_SYMBOL(__stop_notes) = .; \
611 }
Andrew Morton61ce1ef2006-10-27 11:41:44 -0700612
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200613#define INIT_SETUP(initsetup_align) \
614 . = ALIGN(initsetup_align); \
615 VMLINUX_SYMBOL(__setup_start) = .; \
616 *(.init.setup) \
617 VMLINUX_SYMBOL(__setup_end) = .;
618
Pawel Moll026cee02012-03-26 12:50:51 +1030619#define INIT_CALLS_LEVEL(level) \
620 VMLINUX_SYMBOL(__initcall##level##_start) = .; \
621 *(.initcall##level##.init) \
622 *(.initcall##level##s.init) \
Andrew Morton61ce1ef2006-10-27 11:41:44 -0700623
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200624#define INIT_CALLS \
625 VMLINUX_SYMBOL(__initcall_start) = .; \
Pawel Moll026cee02012-03-26 12:50:51 +1030626 *(.initcallearly.init) \
627 INIT_CALLS_LEVEL(0) \
628 INIT_CALLS_LEVEL(1) \
629 INIT_CALLS_LEVEL(2) \
630 INIT_CALLS_LEVEL(3) \
631 INIT_CALLS_LEVEL(4) \
632 INIT_CALLS_LEVEL(5) \
633 INIT_CALLS_LEVEL(rootfs) \
634 INIT_CALLS_LEVEL(6) \
635 INIT_CALLS_LEVEL(7) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200636 VMLINUX_SYMBOL(__initcall_end) = .;
637
638#define CON_INITCALL \
639 VMLINUX_SYMBOL(__con_initcall_start) = .; \
640 *(.con_initcall.init) \
641 VMLINUX_SYMBOL(__con_initcall_end) = .;
642
643#define SECURITY_INITCALL \
644 VMLINUX_SYMBOL(__security_initcall_start) = .; \
645 *(.security_initcall.init) \
646 VMLINUX_SYMBOL(__security_initcall_end) = .;
647
648#ifdef CONFIG_BLK_DEV_INITRD
649#define INIT_RAM_FS \
Mike Frysingerd8826262010-10-26 14:22:30 -0700650 . = ALIGN(4); \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200651 VMLINUX_SYMBOL(__initramfs_start) = .; \
652 *(.init.ramfs) \
Hendrik Bruecknerffe80182010-09-17 15:24:11 -0700653 . = ALIGN(8); \
654 *(.init.ramfs.info)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200655#else
David Howellseadfe212009-06-22 15:32:31 +0100656#define INIT_RAM_FS
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200657#endif
658
Tejun Heo023bf6f2009-07-09 11:27:40 +0900659/*
660 * Default discarded sections.
661 *
662 * Some archs want to discard exit text/data at runtime rather than
663 * link time due to cross-section references such as alt instructions,
664 * bug table, eh_frame, etc. DISCARDS must be the last of output
665 * section definitions so that such archs put those in earlier section
666 * definitions.
667 */
Tejun Heo405d9672009-06-24 15:13:38 +0900668#define DISCARDS \
669 /DISCARD/ : { \
670 EXIT_TEXT \
671 EXIT_DATA \
Tejun Heo023bf6f2009-07-09 11:27:40 +0900672 EXIT_CALL \
Tejun Heo405d9672009-06-24 15:13:38 +0900673 *(.discard) \
Jeremy Fitzhardingec7f52cd2010-07-22 22:58:01 -0700674 *(.discard.*) \
Tejun Heo405d9672009-06-24 15:13:38 +0900675 }
676
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900677/**
Mike Frysinger6ea0c342011-04-04 01:41:32 +0200678 * PERCPU_INPUT - the percpu input sections
679 * @cacheline: cacheline size
680 *
681 * The core percpu section names and core symbols which do not rely
682 * directly upon load addresses.
683 *
684 * @cacheline is used to align subsections to avoid false cacheline
685 * sharing between subsections for different purposes.
686 */
687#define PERCPU_INPUT(cacheline) \
688 VMLINUX_SYMBOL(__per_cpu_start) = .; \
689 *(.data..percpu..first) \
690 . = ALIGN(PAGE_SIZE); \
691 *(.data..percpu..page_aligned) \
692 . = ALIGN(cacheline); \
693 *(.data..percpu..readmostly) \
694 . = ALIGN(cacheline); \
695 *(.data..percpu) \
696 *(.data..percpu..shared_aligned) \
697 VMLINUX_SYMBOL(__per_cpu_end) = .;
698
699/**
Tejun Heo6b7c38d2009-01-19 12:21:28 +0900700 * PERCPU_VADDR - define output section for percpu area
Tejun Heo19df0c22011-01-25 14:26:50 +0100701 * @cacheline: cacheline size
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900702 * @vaddr: explicit base address (optional)
703 * @phdr: destination PHDR (optional)
704 *
Tejun Heo19df0c22011-01-25 14:26:50 +0100705 * Macro which expands to output section for percpu area.
706 *
707 * @cacheline is used to align subsections to avoid false cacheline
708 * sharing between subsections for different purposes.
709 *
710 * If @vaddr is not blank, it specifies explicit base address and all
711 * percpu symbols will be offset from the given address. If blank,
712 * @vaddr always equals @laddr + LOAD_OFFSET.
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900713 *
714 * @phdr defines the output PHDR to use if not blank. Be warned that
715 * output PHDR is sticky. If @phdr is specified, the next output
716 * section in the linker script will go there too. @phdr should have
717 * a leading colon.
718 *
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900719 * Note that this macros defines __per_cpu_load as an absolute symbol.
720 * If there is no need to put the percpu section at a predetermined
Tejun Heo0415b00d12011-03-24 18:50:09 +0100721 * address, use PERCPU_SECTION.
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900722 */
Tejun Heo19df0c22011-01-25 14:26:50 +0100723#define PERCPU_VADDR(cacheline, vaddr, phdr) \
Ingo Molnardba3d362009-01-29 17:10:12 +0100724 VMLINUX_SYMBOL(__per_cpu_load) = .; \
Denys Vlasenko3d9a8542010-02-20 01:03:43 +0100725 .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \
Tejun Heo6b7c38d2009-01-19 12:21:28 +0900726 - LOAD_OFFSET) { \
Mike Frysinger6ea0c342011-04-04 01:41:32 +0200727 PERCPU_INPUT(cacheline) \
Tejun Heo6b7c38d2009-01-19 12:21:28 +0900728 } phdr \
Denys Vlasenko3d9a8542010-02-20 01:03:43 +0100729 . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900730
731/**
Tejun Heo0415b00d12011-03-24 18:50:09 +0100732 * PERCPU_SECTION - define output section for percpu area, simple version
Tejun Heo19df0c22011-01-25 14:26:50 +0100733 * @cacheline: cacheline size
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900734 *
Tejun Heo0415b00d12011-03-24 18:50:09 +0100735 * Align to PAGE_SIZE and outputs output section for percpu area. This
736 * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900737 * __per_cpu_start will be identical.
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900738 *
Tejun Heo0415b00d12011-03-24 18:50:09 +0100739 * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
Tejun Heo19df0c22011-01-25 14:26:50 +0100740 * except that __per_cpu_load is defined as a relative symbol against
741 * .data..percpu which is required for relocatable x86_32 configuration.
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900742 */
Tejun Heo0415b00d12011-03-24 18:50:09 +0100743#define PERCPU_SECTION(cacheline) \
744 . = ALIGN(PAGE_SIZE); \
Denys Vlasenko3d9a8542010-02-20 01:03:43 +0100745 .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900746 VMLINUX_SYMBOL(__per_cpu_load) = .; \
Mike Frysinger6ea0c342011-04-04 01:41:32 +0200747 PERCPU_INPUT(cacheline) \
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900748 }
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200749
750
751/*
752 * Definition of the high level *_SECTION macros
753 * They will fit only a subset of the architectures
754 */
755
756
757/*
758 * Writeable data.
759 * All sections are combined in a single .data section.
760 * The sections following CONSTRUCTORS are arranged so their
761 * typical alignment matches.
762 * A cacheline is typical/always less than a PAGE_SIZE so
763 * the sections that has this restriction (or similar)
764 * is located before the ones requiring PAGE_SIZE alignment.
765 * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300766 * matches the requirement of PAGE_ALIGNED_DATA.
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200767 *
Sam Ravnborg7923f902009-06-14 22:10:41 +0200768 * use 0 as page_align if page_aligned data is not used */
Paul Mundt73f1d932009-06-24 01:04:36 +0900769#define RW_DATA_SECTION(cacheline, pagealigned, inittask) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200770 . = ALIGN(PAGE_SIZE); \
771 .data : AT(ADDR(.data) - LOAD_OFFSET) { \
Tim Abbott39a449d2009-06-23 18:53:15 -0400772 INIT_TASK_DATA(inittask) \
Tim Abbott1b208622009-09-24 10:36:16 -0400773 NOSAVE_DATA \
774 PAGE_ALIGNED_DATA(pagealigned) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200775 CACHELINE_ALIGNED_DATA(cacheline) \
776 READ_MOSTLY_DATA(cacheline) \
777 DATA_DATA \
778 CONSTRUCTORS \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200779 }
780
781#define INIT_TEXT_SECTION(inittext_align) \
782 . = ALIGN(inittext_align); \
783 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \
784 VMLINUX_SYMBOL(_sinittext) = .; \
785 INIT_TEXT \
786 VMLINUX_SYMBOL(_einittext) = .; \
787 }
788
789#define INIT_DATA_SECTION(initsetup_align) \
790 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \
791 INIT_DATA \
792 INIT_SETUP(initsetup_align) \
793 INIT_CALLS \
794 CON_INITCALL \
795 SECURITY_INITCALL \
796 INIT_RAM_FS \
797 }
798
Tim Abbott04e448d2009-07-12 18:23:33 -0400799#define BSS_SECTION(sbss_align, bss_align, stop_align) \
800 . = ALIGN(sbss_align); \
801 VMLINUX_SYMBOL(__bss_start) = .; \
802 SBSS(sbss_align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200803 BSS(bss_align) \
Tim Abbott04e448d2009-07-12 18:23:33 -0400804 . = ALIGN(stop_align); \
805 VMLINUX_SYMBOL(__bss_stop) = .;