blob: 69732d279e8b2d4d99dc6e5d6e6d8de947a56e5c [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) = .;
125#else
126#define TRACE_PRINTKS()
127#endif
128
Frederic Weisbeckerbed1ffc2009-03-13 15:42:11 +0100129#ifdef CONFIG_FTRACE_SYSCALLS
Steven Rostedt3d56e332011-02-02 17:06:09 -0500130#define TRACE_SYSCALLS() . = ALIGN(8); \
131 VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
Frederic Weisbeckerbed1ffc2009-03-13 15:42:11 +0100132 *(__syscalls_metadata) \
133 VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
134#else
135#define TRACE_SYSCALLS()
136#endif
137
Stephen Warrenae278a92012-11-19 16:41:20 -0700138#ifdef CONFIG_CLKSRC_OF
139#define CLKSRC_OF_TABLES() . = ALIGN(8); \
140 VMLINUX_SYMBOL(__clksrc_of_table) = .; \
141 *(__clksrc_of_table) \
142 *(__clksrc_of_table_end)
143#else
144#define CLKSRC_OF_TABLES()
145#endif
Dirk Brandewieaab94332010-12-22 11:57:26 -0800146
Thomas Petazzonif6e916b2012-11-20 23:00:52 +0100147#ifdef CONFIG_IRQCHIP
148#define IRQCHIP_OF_MATCH_TABLE() \
149 . = ALIGN(8); \
150 VMLINUX_SYMBOL(__irqchip_begin) = .; \
151 *(__irqchip_of_table) \
152 *(__irqchip_of_end)
153#else
154#define IRQCHIP_OF_MATCH_TABLE()
155#endif
Dirk Brandewieaab94332010-12-22 11:57:26 -0800156
Prashant Gaikwadf2f6c252013-01-04 12:30:52 +0530157#ifdef CONFIG_COMMON_CLK
158#define CLK_OF_TABLES() . = ALIGN(8); \
159 VMLINUX_SYMBOL(__clk_of_table) = .; \
160 *(__clk_of_table) \
161 *(__clk_of_table_end)
162#else
163#define CLK_OF_TABLES()
164#endif
165
Dirk Brandewieaab94332010-12-22 11:57:26 -0800166#define KERNEL_DTB() \
167 STRUCT_ALIGN(); \
168 VMLINUX_SYMBOL(__dtb_start) = .; \
169 *(.dtb.init.rodata) \
170 VMLINUX_SYMBOL(__dtb_end) = .;
171
Sam Ravnborgca967252007-05-17 13:38:44 +0200172/* .data section */
173#define DATA_DATA \
Sam Ravnborg0e0d3142007-05-17 20:14:48 +0200174 *(.data) \
Sam Ravnborg312b1482008-01-28 20:21:15 +0100175 *(.ref.data) \
Mike Frysingerd356c0b2010-10-26 14:22:29 -0700176 *(.data..shared_aligned) /* percpu related */ \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100177 MEM_KEEP(init.data) \
178 MEM_KEEP(exit.data) \
Jan Beulich7ccaba52012-03-23 15:01:52 -0700179 *(.data.unlikely) \
Mathieu Desnoyers65498642011-01-26 17:26:22 -0500180 STRUCT_ALIGN(); \
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400181 *(__tracepoints) \
Jason Barone9d376f2009-02-05 11:51:38 -0500182 /* implement dynamic printk debug */ \
Jason Barond430d3d2011-03-16 17:29:47 -0400183 . = ALIGN(8); \
184 VMLINUX_SYMBOL(__start___jump_table) = .; \
185 *(__jump_table) \
186 VMLINUX_SYMBOL(__stop___jump_table) = .; \
Jason Barone9d376f2009-02-05 11:51:38 -0500187 . = ALIGN(8); \
188 VMLINUX_SYMBOL(__start___verbose) = .; \
189 *(__verbose) \
190 VMLINUX_SYMBOL(__stop___verbose) = .; \
Steven Rostedt2bcd5212008-11-21 01:30:54 -0500191 LIKELY_PROFILE() \
Steven Rostedtb77e38a2009-02-24 10:21:36 -0500192 BRANCH_PROFILE() \
Steven Rostedt3d56e332011-02-02 17:06:09 -0500193 TRACE_PRINTKS()
Sam Ravnborgca967252007-05-17 13:38:44 +0200194
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200195/*
196 * Data section helpers
197 */
198#define NOSAVE_DATA \
199 . = ALIGN(PAGE_SIZE); \
200 VMLINUX_SYMBOL(__nosave_begin) = .; \
Denys Vlasenko07b3bb12010-02-20 01:03:52 +0100201 *(.data..nosave) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200202 . = ALIGN(PAGE_SIZE); \
203 VMLINUX_SYMBOL(__nosave_end) = .;
204
205#define PAGE_ALIGNED_DATA(page_align) \
206 . = ALIGN(page_align); \
Tim Abbott75b13482010-02-20 01:03:37 +0100207 *(.data..page_aligned)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200208
209#define READ_MOSTLY_DATA(align) \
210 . = ALIGN(align); \
Shaohua Li83697442011-01-12 16:59:38 -0800211 *(.data..read_mostly) \
212 . = ALIGN(align);
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200213
214#define CACHELINE_ALIGNED_DATA(align) \
215 . = ALIGN(align); \
Tim Abbott4af57b72010-02-20 01:03:34 +0100216 *(.data..cacheline_aligned)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200217
Tim Abbott39a449d2009-06-23 18:53:15 -0400218#define INIT_TASK_DATA(align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200219 . = ALIGN(align); \
Tim Abbott2af76872010-02-20 01:03:35 +0100220 *(.data..init_task)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200221
222/*
223 * Read only Data
224 */
225#define RO_DATA_SECTION(align) \
Sam Ravnborg4096b462007-05-29 21:29:00 +0200226 . = ALIGN((align)); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
Vivek Goyal65695802006-12-07 02:14:03 +0100228 VMLINUX_SYMBOL(__start_rodata) = .; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 *(.rodata) *(.rodata.*) \
230 *(__vermagic) /* Kernel version magic */ \
Mathieu Desnoyers65498642011-01-26 17:26:22 -0500231 . = ALIGN(8); \
232 VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \
233 *(__tracepoints_ptrs) /* Tracepoints: pointer array */\
234 VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \
Mathieu Desnoyers97e1c182008-07-18 12:16:16 -0400235 *(__tracepoints_strings)/* Tracepoints: strings */ \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236 } \
237 \
238 .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
239 *(.rodata1) \
240 } \
241 \
Jan Beulich6360b1f2008-05-12 15:44:41 +0200242 BUG_TABLE \
243 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 /* PCI quirks */ \
245 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
246 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
247 *(.pci_fixup_early) \
248 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
249 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
250 *(.pci_fixup_header) \
251 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
252 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
253 *(.pci_fixup_final) \
254 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
255 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
256 *(.pci_fixup_enable) \
257 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
Alan Cox1597cac2006-12-04 15:14:45 -0800258 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
259 *(.pci_fixup_resume) \
260 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
Rafael J. Wysockie1a2a512008-05-15 21:51:31 +0200261 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
262 *(.pci_fixup_resume_early) \
263 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
264 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
265 *(.pci_fixup_suspend) \
266 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267 } \
268 \
David Woodhouse5658c762008-05-23 13:52:42 +0100269 /* Built-in firmware blobs */ \
270 .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
271 VMLINUX_SYMBOL(__start_builtin_fw) = .; \
272 *(.builtin_fw) \
273 VMLINUX_SYMBOL(__end_builtin_fw) = .; \
274 } \
275 \
Jan Beulich63687a52008-05-12 15:44:41 +0200276 TRACEDATA \
277 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 /* Kernel symbol table: Normal symbols */ \
279 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
280 VMLINUX_SYMBOL(__start___ksymtab) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200281 *(SORT(___ksymtab+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
283 } \
284 \
285 /* Kernel symbol table: GPL-only symbols */ \
286 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
287 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200288 *(SORT(___ksymtab_gpl+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
290 } \
291 \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700292 /* Kernel symbol table: Normal unused symbols */ \
293 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
294 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200295 *(SORT(___ksymtab_unused+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700296 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
297 } \
298 \
299 /* Kernel symbol table: GPL-only unused symbols */ \
300 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
301 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200302 *(SORT(___ksymtab_unused_gpl+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700303 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
304 } \
305 \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800306 /* Kernel symbol table: GPL-future-only symbols */ \
307 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
308 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200309 *(SORT(___ksymtab_gpl_future+*)) \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800310 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
311 } \
312 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 /* Kernel symbol table: Normal symbols */ \
314 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
315 VMLINUX_SYMBOL(__start___kcrctab) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200316 *(SORT(___kcrctab+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
318 } \
319 \
320 /* Kernel symbol table: GPL-only symbols */ \
321 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
322 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200323 *(SORT(___kcrctab_gpl+*)) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
325 } \
326 \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700327 /* Kernel symbol table: Normal unused symbols */ \
328 __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
329 VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200330 *(SORT(___kcrctab_unused+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700331 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
332 } \
333 \
334 /* Kernel symbol table: GPL-only unused symbols */ \
335 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
336 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200337 *(SORT(___kcrctab_unused_gpl+*)) \
Arjan van de Venf71d20e2006-06-28 04:26:45 -0700338 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
339 } \
340 \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800341 /* Kernel symbol table: GPL-future-only symbols */ \
342 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
343 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
Alessio Igor Boganif02e8a62011-04-14 14:59:39 +0200344 *(SORT(___kcrctab_gpl_future+*)) \
Greg Kroah-Hartman9f28bb72006-03-20 13:17:13 -0800345 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
346 } \
347 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 /* Kernel symbol table: strings */ \
349 __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
350 *(__ksymtab_strings) \
351 } \
352 \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100353 /* __*init sections */ \
354 __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
Sam Ravnborg312b1482008-01-28 20:21:15 +0100355 *(.ref.rodata) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100356 MEM_KEEP(init.rodata) \
357 MEM_KEEP(exit.rodata) \
358 } \
359 \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 /* Built-in module parameters. */ \
361 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
362 VMLINUX_SYMBOL(__start___param) = .; \
363 *(__param) \
364 VMLINUX_SYMBOL(__stop___param) = .; \
Dmitry Torokhove94965e2010-12-15 14:00:19 -0800365 } \
366 \
367 /* Built-in module versions. */ \
368 __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \
369 VMLINUX_SYMBOL(__start___modver) = .; \
370 *(__modver) \
371 VMLINUX_SYMBOL(__stop___modver) = .; \
Arjan van de Venedeed302008-01-30 13:34:08 +0100372 . = ALIGN((align)); \
Vivek Goyal65695802006-12-07 02:14:03 +0100373 VMLINUX_SYMBOL(__end_rodata) = .; \
Marcelo Tosatti7583ddf2006-09-27 01:51:02 -0700374 } \
Sam Ravnborg4096b462007-05-29 21:29:00 +0200375 . = ALIGN((align));
376
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200377/* RODATA & RO_DATA provided for backward compatibility.
Sam Ravnborg4096b462007-05-29 21:29:00 +0200378 * All archs are supposed to use RO_DATA() */
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200379#define RODATA RO_DATA_SECTION(4096)
380#define RO_DATA(align) RO_DATA_SECTION(align)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381
382#define SECURITY_INIT \
Eric W. Biederman60bad7f2005-06-25 14:57:46 -0700383 .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 VMLINUX_SYMBOL(__security_initcall_start) = .; \
385 *(.security_initcall.init) \
386 VMLINUX_SYMBOL(__security_initcall_end) = .; \
387 }
388
Sam Ravnborg76647092007-05-13 00:31:33 +0200389/* .text section. Map to function alignment to avoid address changes
390 * during second ld run in second ld pass when generating System.map */
391#define TEXT_TEXT \
392 ALIGN_FUNCTION(); \
Jan Beulichfb5e2b32008-06-18 12:36:01 +0100393 *(.text.hot) \
Sam Ravnborg0e0d3142007-05-17 20:14:48 +0200394 *(.text) \
Sam Ravnborg312b1482008-01-28 20:21:15 +0100395 *(.ref.text) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100396 MEM_KEEP(init.text) \
Jan Beulichfb5e2b32008-06-18 12:36:01 +0100397 MEM_KEEP(exit.text) \
398 *(.text.unlikely)
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100399
Sam Ravnborg76647092007-05-13 00:31:33 +0200400
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000401/* sched.text is aling to function alignment to secure we have same
402 * address even at second ld pass when generating System.map */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403#define SCHED_TEXT \
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000404 ALIGN_FUNCTION(); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 VMLINUX_SYMBOL(__sched_text_start) = .; \
406 *(.sched.text) \
407 VMLINUX_SYMBOL(__sched_text_end) = .;
408
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000409/* spinlock.text is aling to function alignment to secure we have same
410 * address even at second ld pass when generating System.map */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411#define LOCK_TEXT \
Sam Ravnborg6d30e3a2005-07-14 20:15:44 +0000412 ALIGN_FUNCTION(); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 VMLINUX_SYMBOL(__lock_text_start) = .; \
414 *(.spinlock.text) \
415 VMLINUX_SYMBOL(__lock_text_end) = .;
Prasanna S Panchamukhid0aaff92005-09-06 15:19:26 -0700416
417#define KPROBES_TEXT \
418 ALIGN_FUNCTION(); \
419 VMLINUX_SYMBOL(__kprobes_text_start) = .; \
420 *(.kprobes.text) \
421 VMLINUX_SYMBOL(__kprobes_text_end) = .;
Paolo 'Blaisorblade' Giarrussoa7d0c212005-09-10 19:44:54 +0200422
Jiri Olsaea714542011-03-07 19:10:39 +0100423#define ENTRY_TEXT \
424 ALIGN_FUNCTION(); \
425 VMLINUX_SYMBOL(__entry_text_start) = .; \
426 *(.entry.text) \
427 VMLINUX_SYMBOL(__entry_text_end) = .;
428
Frederic Weisbeckera0343e82008-12-09 23:53:16 +0100429#ifdef CONFIG_FUNCTION_GRAPH_TRACER
430#define IRQENTRY_TEXT \
431 ALIGN_FUNCTION(); \
432 VMLINUX_SYMBOL(__irqentry_text_start) = .; \
433 *(.irqentry.text) \
434 VMLINUX_SYMBOL(__irqentry_text_end) = .;
435#else
436#define IRQENTRY_TEXT
437#endif
438
Sam Ravnborg37c514e2008-02-19 21:00:18 +0100439/* Section used for early init (in .S files) */
Sam Ravnborg7923f902009-06-14 22:10:41 +0200440#define HEAD_TEXT *(.head.text)
Sam Ravnborg37c514e2008-02-19 21:00:18 +0100441
Sam Ravnborg7923f902009-06-14 22:10:41 +0200442#define HEAD_TEXT_SECTION \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200443 .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \
444 HEAD_TEXT \
445 }
446
447/*
448 * Exception table
449 */
450#define EXCEPTION_TABLE(align) \
451 . = ALIGN(align); \
452 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
453 VMLINUX_SYMBOL(__start___ex_table) = .; \
454 *(__ex_table) \
455 VMLINUX_SYMBOL(__stop___ex_table) = .; \
456 }
457
458/*
459 * Init task
460 */
Tim Abbott39a449d2009-06-23 18:53:15 -0400461#define INIT_TASK_DATA_SECTION(align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200462 . = ALIGN(align); \
Sam Ravnborgda5e37e2010-07-13 11:39:42 +0200463 .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \
Tim Abbott39a449d2009-06-23 18:53:15 -0400464 INIT_TASK_DATA(align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200465 }
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100466
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700467#ifdef CONFIG_CONSTRUCTORS
Heiko Carstens2a2325e2009-06-30 11:41:13 -0700468#define KERNEL_CTORS() . = ALIGN(8); \
469 VMLINUX_SYMBOL(__ctors_start) = .; \
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700470 *(.ctors) \
471 VMLINUX_SYMBOL(__ctors_end) = .;
472#else
473#define KERNEL_CTORS()
474#endif
475
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100476/* init and exit section handling */
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100477#define INIT_DATA \
478 *(.init.data) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100479 MEM_DISCARD(init.data) \
Peter Oberparleiterb99b87f2009-06-17 16:28:03 -0700480 KERNEL_CTORS() \
John Reiser4b3b4c52009-07-27 11:23:50 -0700481 MCOUNT_REC() \
Steven Rostedt9fd49322012-04-24 22:32:06 -0400482 *(.init.rodata) \
Steven Rostedte4a9ea52011-01-27 09:15:30 -0500483 FTRACE_EVENTS() \
Steven Rostedt3d56e332011-02-02 17:06:09 -0500484 TRACE_SYSCALLS() \
Dirk Brandewieaab94332010-12-22 11:57:26 -0800485 MEM_DISCARD(init.rodata) \
Prashant Gaikwadf2f6c252013-01-04 12:30:52 +0530486 CLK_OF_TABLES() \
Stephen Warrenae278a92012-11-19 16:41:20 -0700487 CLKSRC_OF_TABLES() \
Thomas Petazzonif6e916b2012-11-20 23:00:52 +0100488 KERNEL_DTB() \
489 IRQCHIP_OF_MATCH_TABLE()
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100490
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100491#define INIT_TEXT \
492 *(.init.text) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100493 MEM_DISCARD(init.text)
494
495#define EXIT_DATA \
496 *(.exit.data) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100497 MEM_DISCARD(exit.data) \
498 MEM_DISCARD(exit.rodata)
499
500#define EXIT_TEXT \
501 *(.exit.text) \
Sam Ravnborgeb8f6892008-01-20 20:07:28 +0100502 MEM_DISCARD(exit.text)
Sam Ravnborg01ba2bd2008-01-20 14:15:03 +0100503
Sam Ravnborg7923f902009-06-14 22:10:41 +0200504#define EXIT_CALL \
505 *(.exitcall.exit)
506
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200507/*
508 * bss (Block Started by Symbol) - uninitialized data
509 * zeroed during startup
510 */
Tim Abbott04e448d2009-07-12 18:23:33 -0400511#define SBSS(sbss_align) \
512 . = ALIGN(sbss_align); \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200513 .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
514 *(.sbss) \
515 *(.scommon) \
516 }
517
David Daneyc87728c2012-08-14 11:08:00 -0700518/*
519 * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
520 * sections to the front of bss.
521 */
522#ifndef BSS_FIRST_SECTIONS
523#define BSS_FIRST_SECTIONS
524#endif
525
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200526#define BSS(bss_align) \
527 . = ALIGN(bss_align); \
528 .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \
David Daneyc87728c2012-08-14 11:08:00 -0700529 BSS_FIRST_SECTIONS \
Tim Abbott7c74df02010-02-20 01:03:38 +0100530 *(.bss..page_aligned) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200531 *(.dynbss) \
532 *(.bss) \
533 *(COMMON) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200534 }
535
536/*
537 * DWARF debug sections.
538 * Symbols in the DWARF debugging sections are relative to
539 * the beginning of the section so we begin them at 0.
540 */
Paolo 'Blaisorblade' Giarrussoa7d0c212005-09-10 19:44:54 +0200541#define DWARF_DEBUG \
542 /* DWARF 1 */ \
543 .debug 0 : { *(.debug) } \
544 .line 0 : { *(.line) } \
545 /* GNU DWARF 1 extensions */ \
546 .debug_srcinfo 0 : { *(.debug_srcinfo) } \
547 .debug_sfnames 0 : { *(.debug_sfnames) } \
548 /* DWARF 1.1 and DWARF 2 */ \
549 .debug_aranges 0 : { *(.debug_aranges) } \
550 .debug_pubnames 0 : { *(.debug_pubnames) } \
551 /* DWARF 2 */ \
552 .debug_info 0 : { *(.debug_info \
553 .gnu.linkonce.wi.*) } \
554 .debug_abbrev 0 : { *(.debug_abbrev) } \
555 .debug_line 0 : { *(.debug_line) } \
556 .debug_frame 0 : { *(.debug_frame) } \
557 .debug_str 0 : { *(.debug_str) } \
558 .debug_loc 0 : { *(.debug_loc) } \
559 .debug_macinfo 0 : { *(.debug_macinfo) } \
560 /* SGI/MIPS DWARF 2 extensions */ \
561 .debug_weaknames 0 : { *(.debug_weaknames) } \
562 .debug_funcnames 0 : { *(.debug_funcnames) } \
563 .debug_typenames 0 : { *(.debug_typenames) } \
564 .debug_varnames 0 : { *(.debug_varnames) } \
565
566 /* Stabs debugging sections. */
567#define STABS_DEBUG \
568 .stab 0 : { *(.stab) } \
569 .stabstr 0 : { *(.stabstr) } \
570 .stab.excl 0 : { *(.stab.excl) } \
571 .stab.exclstr 0 : { *(.stab.exclstr) } \
572 .stab.index 0 : { *(.stab.index) } \
573 .stab.indexstr 0 : { *(.stab.indexstr) } \
574 .comment 0 : { *(.comment) }
Jeremy Fitzhardinge9c9b8b32006-09-25 23:32:26 -0700575
Jan Beulich6360b1f2008-05-12 15:44:41 +0200576#ifdef CONFIG_GENERIC_BUG
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800577#define BUG_TABLE \
578 . = ALIGN(8); \
579 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700580 VMLINUX_SYMBOL(__start___bug_table) = .; \
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800581 *(__bug_table) \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700582 VMLINUX_SYMBOL(__stop___bug_table) = .; \
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800583 }
Jan Beulich6360b1f2008-05-12 15:44:41 +0200584#else
585#define BUG_TABLE
586#endif
Jeremy Fitzhardinge7664c5a2006-12-08 02:36:19 -0800587
Jan Beulich63687a52008-05-12 15:44:41 +0200588#ifdef CONFIG_PM_TRACE
589#define TRACEDATA \
590 . = ALIGN(4); \
591 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700592 VMLINUX_SYMBOL(__tracedata_start) = .; \
Jan Beulich63687a52008-05-12 15:44:41 +0200593 *(.tracedata) \
Yoshinori Satoc6de00262008-07-31 00:07:29 -0700594 VMLINUX_SYMBOL(__tracedata_end) = .; \
Jan Beulich63687a52008-05-12 15:44:41 +0200595 }
596#else
597#define TRACEDATA
598#endif
599
Jeremy Fitzhardinge9c9b8b32006-09-25 23:32:26 -0700600#define NOTES \
Roland McGrathcbe87122007-07-19 01:48:36 -0700601 .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
602 VMLINUX_SYMBOL(__start_notes) = .; \
603 *(.note.*) \
604 VMLINUX_SYMBOL(__stop_notes) = .; \
605 }
Andrew Morton61ce1ef2006-10-27 11:41:44 -0700606
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200607#define INIT_SETUP(initsetup_align) \
608 . = ALIGN(initsetup_align); \
609 VMLINUX_SYMBOL(__setup_start) = .; \
610 *(.init.setup) \
611 VMLINUX_SYMBOL(__setup_end) = .;
612
Pawel Moll026cee02012-03-26 12:50:51 +1030613#define INIT_CALLS_LEVEL(level) \
614 VMLINUX_SYMBOL(__initcall##level##_start) = .; \
615 *(.initcall##level##.init) \
616 *(.initcall##level##s.init) \
Andrew Morton61ce1ef2006-10-27 11:41:44 -0700617
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200618#define INIT_CALLS \
619 VMLINUX_SYMBOL(__initcall_start) = .; \
Pawel Moll026cee02012-03-26 12:50:51 +1030620 *(.initcallearly.init) \
621 INIT_CALLS_LEVEL(0) \
622 INIT_CALLS_LEVEL(1) \
623 INIT_CALLS_LEVEL(2) \
624 INIT_CALLS_LEVEL(3) \
625 INIT_CALLS_LEVEL(4) \
626 INIT_CALLS_LEVEL(5) \
627 INIT_CALLS_LEVEL(rootfs) \
628 INIT_CALLS_LEVEL(6) \
629 INIT_CALLS_LEVEL(7) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200630 VMLINUX_SYMBOL(__initcall_end) = .;
631
632#define CON_INITCALL \
633 VMLINUX_SYMBOL(__con_initcall_start) = .; \
634 *(.con_initcall.init) \
635 VMLINUX_SYMBOL(__con_initcall_end) = .;
636
637#define SECURITY_INITCALL \
638 VMLINUX_SYMBOL(__security_initcall_start) = .; \
639 *(.security_initcall.init) \
640 VMLINUX_SYMBOL(__security_initcall_end) = .;
641
642#ifdef CONFIG_BLK_DEV_INITRD
643#define INIT_RAM_FS \
Mike Frysingerd8826262010-10-26 14:22:30 -0700644 . = ALIGN(4); \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200645 VMLINUX_SYMBOL(__initramfs_start) = .; \
646 *(.init.ramfs) \
Hendrik Bruecknerffe80182010-09-17 15:24:11 -0700647 . = ALIGN(8); \
648 *(.init.ramfs.info)
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200649#else
David Howellseadfe212009-06-22 15:32:31 +0100650#define INIT_RAM_FS
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200651#endif
652
Tejun Heo023bf6f2009-07-09 11:27:40 +0900653/*
654 * Default discarded sections.
655 *
656 * Some archs want to discard exit text/data at runtime rather than
657 * link time due to cross-section references such as alt instructions,
658 * bug table, eh_frame, etc. DISCARDS must be the last of output
659 * section definitions so that such archs put those in earlier section
660 * definitions.
661 */
Tejun Heo405d9672009-06-24 15:13:38 +0900662#define DISCARDS \
663 /DISCARD/ : { \
664 EXIT_TEXT \
665 EXIT_DATA \
Tejun Heo023bf6f2009-07-09 11:27:40 +0900666 EXIT_CALL \
Tejun Heo405d9672009-06-24 15:13:38 +0900667 *(.discard) \
Jeremy Fitzhardingec7f52cd2010-07-22 22:58:01 -0700668 *(.discard.*) \
Tejun Heo405d9672009-06-24 15:13:38 +0900669 }
670
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900671/**
Mike Frysinger6ea0c342011-04-04 01:41:32 +0200672 * PERCPU_INPUT - the percpu input sections
673 * @cacheline: cacheline size
674 *
675 * The core percpu section names and core symbols which do not rely
676 * directly upon load addresses.
677 *
678 * @cacheline is used to align subsections to avoid false cacheline
679 * sharing between subsections for different purposes.
680 */
681#define PERCPU_INPUT(cacheline) \
682 VMLINUX_SYMBOL(__per_cpu_start) = .; \
683 *(.data..percpu..first) \
684 . = ALIGN(PAGE_SIZE); \
685 *(.data..percpu..page_aligned) \
686 . = ALIGN(cacheline); \
687 *(.data..percpu..readmostly) \
688 . = ALIGN(cacheline); \
689 *(.data..percpu) \
690 *(.data..percpu..shared_aligned) \
691 VMLINUX_SYMBOL(__per_cpu_end) = .;
692
693/**
Tejun Heo6b7c38d2009-01-19 12:21:28 +0900694 * PERCPU_VADDR - define output section for percpu area
Tejun Heo19df0c22011-01-25 14:26:50 +0100695 * @cacheline: cacheline size
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900696 * @vaddr: explicit base address (optional)
697 * @phdr: destination PHDR (optional)
698 *
Tejun Heo19df0c22011-01-25 14:26:50 +0100699 * Macro which expands to output section for percpu area.
700 *
701 * @cacheline is used to align subsections to avoid false cacheline
702 * sharing between subsections for different purposes.
703 *
704 * If @vaddr is not blank, it specifies explicit base address and all
705 * percpu symbols will be offset from the given address. If blank,
706 * @vaddr always equals @laddr + LOAD_OFFSET.
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900707 *
708 * @phdr defines the output PHDR to use if not blank. Be warned that
709 * output PHDR is sticky. If @phdr is specified, the next output
710 * section in the linker script will go there too. @phdr should have
711 * a leading colon.
712 *
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900713 * Note that this macros defines __per_cpu_load as an absolute symbol.
714 * If there is no need to put the percpu section at a predetermined
Tejun Heo0415b00d12011-03-24 18:50:09 +0100715 * address, use PERCPU_SECTION.
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900716 */
Tejun Heo19df0c22011-01-25 14:26:50 +0100717#define PERCPU_VADDR(cacheline, vaddr, phdr) \
Ingo Molnardba3d362009-01-29 17:10:12 +0100718 VMLINUX_SYMBOL(__per_cpu_load) = .; \
Denys Vlasenko3d9a8542010-02-20 01:03:43 +0100719 .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \
Tejun Heo6b7c38d2009-01-19 12:21:28 +0900720 - LOAD_OFFSET) { \
Mike Frysinger6ea0c342011-04-04 01:41:32 +0200721 PERCPU_INPUT(cacheline) \
Tejun Heo6b7c38d2009-01-19 12:21:28 +0900722 } phdr \
Denys Vlasenko3d9a8542010-02-20 01:03:43 +0100723 . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900724
725/**
Tejun Heo0415b00d12011-03-24 18:50:09 +0100726 * PERCPU_SECTION - define output section for percpu area, simple version
Tejun Heo19df0c22011-01-25 14:26:50 +0100727 * @cacheline: cacheline size
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900728 *
Tejun Heo0415b00d12011-03-24 18:50:09 +0100729 * Align to PAGE_SIZE and outputs output section for percpu area. This
730 * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900731 * __per_cpu_start will be identical.
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900732 *
Tejun Heo0415b00d12011-03-24 18:50:09 +0100733 * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
Tejun Heo19df0c22011-01-25 14:26:50 +0100734 * except that __per_cpu_load is defined as a relative symbol against
735 * .data..percpu which is required for relocatable x86_32 configuration.
Tejun Heo3e5d8f92009-01-13 20:41:35 +0900736 */
Tejun Heo0415b00d12011-03-24 18:50:09 +0100737#define PERCPU_SECTION(cacheline) \
738 . = ALIGN(PAGE_SIZE); \
Denys Vlasenko3d9a8542010-02-20 01:03:43 +0100739 .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900740 VMLINUX_SYMBOL(__per_cpu_load) = .; \
Mike Frysinger6ea0c342011-04-04 01:41:32 +0200741 PERCPU_INPUT(cacheline) \
Tejun Heo3ac6cff2009-01-30 16:32:22 +0900742 }
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200743
744
745/*
746 * Definition of the high level *_SECTION macros
747 * They will fit only a subset of the architectures
748 */
749
750
751/*
752 * Writeable data.
753 * All sections are combined in a single .data section.
754 * The sections following CONSTRUCTORS are arranged so their
755 * typical alignment matches.
756 * A cacheline is typical/always less than a PAGE_SIZE so
757 * the sections that has this restriction (or similar)
758 * is located before the ones requiring PAGE_SIZE alignment.
759 * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300760 * matches the requirement of PAGE_ALIGNED_DATA.
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200761 *
Sam Ravnborg7923f902009-06-14 22:10:41 +0200762 * use 0 as page_align if page_aligned data is not used */
Paul Mundt73f1d932009-06-24 01:04:36 +0900763#define RW_DATA_SECTION(cacheline, pagealigned, inittask) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200764 . = ALIGN(PAGE_SIZE); \
765 .data : AT(ADDR(.data) - LOAD_OFFSET) { \
Tim Abbott39a449d2009-06-23 18:53:15 -0400766 INIT_TASK_DATA(inittask) \
Tim Abbott1b208622009-09-24 10:36:16 -0400767 NOSAVE_DATA \
768 PAGE_ALIGNED_DATA(pagealigned) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200769 CACHELINE_ALIGNED_DATA(cacheline) \
770 READ_MOSTLY_DATA(cacheline) \
771 DATA_DATA \
772 CONSTRUCTORS \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200773 }
774
775#define INIT_TEXT_SECTION(inittext_align) \
776 . = ALIGN(inittext_align); \
777 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \
778 VMLINUX_SYMBOL(_sinittext) = .; \
779 INIT_TEXT \
780 VMLINUX_SYMBOL(_einittext) = .; \
781 }
782
783#define INIT_DATA_SECTION(initsetup_align) \
784 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \
785 INIT_DATA \
786 INIT_SETUP(initsetup_align) \
787 INIT_CALLS \
788 CON_INITCALL \
789 SECURITY_INITCALL \
790 INIT_RAM_FS \
791 }
792
Tim Abbott04e448d2009-07-12 18:23:33 -0400793#define BSS_SECTION(sbss_align, bss_align, stop_align) \
794 . = ALIGN(sbss_align); \
795 VMLINUX_SYMBOL(__bss_start) = .; \
796 SBSS(sbss_align) \
Sam Ravnborgef53dae2009-06-07 20:46:37 +0200797 BSS(bss_align) \
Tim Abbott04e448d2009-07-12 18:23:33 -0400798 . = ALIGN(stop_align); \
799 VMLINUX_SYMBOL(__bss_stop) = .;