Merge branches 'devel-stable', 'entry', 'fixes', 'mach-types', 'misc' and 'smp-hotplu...
[linux-3.10.git] / include / asm-generic / vmlinux.lds.h
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 = .;
15  *      HEAD_TEXT_SECTION
16  *      INIT_TEXT_SECTION(PAGE_SIZE)
17  *      INIT_DATA_SECTION(...)
18  *      PERCPU_SECTION(CACHELINE_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  *
33  *      BSS_SECTION(0, 0, 0)
34  *      _end = .;
35  *
36  *      STABS_DEBUG
37  *      DWARF_DEBUG
38  *
39  *      DISCARDS                // must be the last
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  */
50
51 #ifndef LOAD_OFFSET
52 #define LOAD_OFFSET 0
53 #endif
54
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)
61 #endif
62
63 /* Align . to a 8 byte boundary equals to maximum function alignment. */
64 #define ALIGN_FUNCTION()  . = ALIGN(8)
65
66 /*
67  * Align to a 32 byte boundary equal to the
68  * alignment gcc 4.5 uses for a struct
69  */
70 #define STRUCT_ALIGNMENT 32
71 #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT)
72
73 /* The actual configuration determine if the init/exit sections
74  * are handled as text/data or they can be discarded (which
75  * often happens at runtime)
76  */
77 #ifdef CONFIG_HOTPLUG
78 #define DEV_KEEP(sec)    *(.dev##sec)
79 #define DEV_DISCARD(sec)
80 #else
81 #define DEV_KEEP(sec)
82 #define DEV_DISCARD(sec) *(.dev##sec)
83 #endif
84
85 #ifdef CONFIG_HOTPLUG_CPU
86 #define CPU_KEEP(sec)    *(.cpu##sec)
87 #define CPU_DISCARD(sec)
88 #else
89 #define CPU_KEEP(sec)
90 #define CPU_DISCARD(sec) *(.cpu##sec)
91 #endif
92
93 #if defined(CONFIG_MEMORY_HOTPLUG)
94 #define MEM_KEEP(sec)    *(.mem##sec)
95 #define MEM_DISCARD(sec)
96 #else
97 #define MEM_KEEP(sec)
98 #define MEM_DISCARD(sec) *(.mem##sec)
99 #endif
100
101 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
102 #define MCOUNT_REC()    . = ALIGN(8);                           \
103                         VMLINUX_SYMBOL(__start_mcount_loc) = .; \
104                         *(__mcount_loc)                         \
105                         VMLINUX_SYMBOL(__stop_mcount_loc) = .;
106 #else
107 #define MCOUNT_REC()
108 #endif
109
110 #ifdef CONFIG_TRACE_BRANCH_PROFILING
111 #define LIKELY_PROFILE()        VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
112                                 *(_ftrace_annotated_branch)                           \
113                                 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
114 #else
115 #define LIKELY_PROFILE()
116 #endif
117
118 #ifdef CONFIG_PROFILE_ALL_BRANCHES
119 #define BRANCH_PROFILE()        VMLINUX_SYMBOL(__start_branch_profile) = .;   \
120                                 *(_ftrace_branch)                             \
121                                 VMLINUX_SYMBOL(__stop_branch_profile) = .;
122 #else
123 #define BRANCH_PROFILE()
124 #endif
125
126 #ifdef CONFIG_EVENT_TRACING
127 #define FTRACE_EVENTS() . = ALIGN(8);                                   \
128                         VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
129                         *(_ftrace_events)                               \
130                         VMLINUX_SYMBOL(__stop_ftrace_events) = .;
131 #else
132 #define FTRACE_EVENTS()
133 #endif
134
135 #ifdef CONFIG_TRACING
136 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
137                          *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
138                          VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
139 #else
140 #define TRACE_PRINTKS()
141 #endif
142
143 #ifdef CONFIG_FTRACE_SYSCALLS
144 #define TRACE_SYSCALLS() . = ALIGN(8);                                  \
145                          VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
146                          *(__syscalls_metadata)                         \
147                          VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
148 #else
149 #define TRACE_SYSCALLS()
150 #endif
151
152 #ifdef CONFIG_CLKSRC_OF
153 #define CLKSRC_OF_TABLES() . = ALIGN(8);                                \
154                            VMLINUX_SYMBOL(__clksrc_of_table) = .;       \
155                            *(__clksrc_of_table)                         \
156                            *(__clksrc_of_table_end)
157 #else
158 #define CLKSRC_OF_TABLES()
159 #endif
160
161 #ifdef CONFIG_IRQCHIP
162 #define IRQCHIP_OF_MATCH_TABLE()                                        \
163         . = ALIGN(8);                                                   \
164         VMLINUX_SYMBOL(__irqchip_begin) = .;                            \
165         *(__irqchip_of_table)                                           \
166         *(__irqchip_of_end)
167 #else
168 #define IRQCHIP_OF_MATCH_TABLE()
169 #endif
170
171 #ifdef CONFIG_COMMON_CLK
172 #define CLK_OF_TABLES() . = ALIGN(8);                           \
173                         VMLINUX_SYMBOL(__clk_of_table) = .;     \
174                         *(__clk_of_table)                       \
175                         *(__clk_of_table_end)
176 #else
177 #define CLK_OF_TABLES()
178 #endif
179
180 #define KERNEL_DTB()                                                    \
181         STRUCT_ALIGN();                                                 \
182         VMLINUX_SYMBOL(__dtb_start) = .;                                \
183         *(.dtb.init.rodata)                                             \
184         VMLINUX_SYMBOL(__dtb_end) = .;
185
186 /* .data section */
187 #define DATA_DATA                                                       \
188         *(.data)                                                        \
189         *(.ref.data)                                                    \
190         *(.data..shared_aligned) /* percpu related */                   \
191         DEV_KEEP(init.data)                                             \
192         DEV_KEEP(exit.data)                                             \
193         CPU_KEEP(init.data)                                             \
194         CPU_KEEP(exit.data)                                             \
195         MEM_KEEP(init.data)                                             \
196         MEM_KEEP(exit.data)                                             \
197         *(.data.unlikely)                                               \
198         STRUCT_ALIGN();                                                 \
199         *(__tracepoints)                                                \
200         /* implement dynamic printk debug */                            \
201         . = ALIGN(8);                                                   \
202         VMLINUX_SYMBOL(__start___jump_table) = .;                       \
203         *(__jump_table)                                                 \
204         VMLINUX_SYMBOL(__stop___jump_table) = .;                        \
205         . = ALIGN(8);                                                   \
206         VMLINUX_SYMBOL(__start___verbose) = .;                          \
207         *(__verbose)                                                    \
208         VMLINUX_SYMBOL(__stop___verbose) = .;                           \
209         LIKELY_PROFILE()                                                \
210         BRANCH_PROFILE()                                                \
211         TRACE_PRINTKS()
212
213 /*
214  * Data section helpers
215  */
216 #define NOSAVE_DATA                                                     \
217         . = ALIGN(PAGE_SIZE);                                           \
218         VMLINUX_SYMBOL(__nosave_begin) = .;                             \
219         *(.data..nosave)                                                \
220         . = ALIGN(PAGE_SIZE);                                           \
221         VMLINUX_SYMBOL(__nosave_end) = .;
222
223 #define PAGE_ALIGNED_DATA(page_align)                                   \
224         . = ALIGN(page_align);                                          \
225         *(.data..page_aligned)
226
227 #define READ_MOSTLY_DATA(align)                                         \
228         . = ALIGN(align);                                               \
229         *(.data..read_mostly)                                           \
230         . = ALIGN(align);
231
232 #define CACHELINE_ALIGNED_DATA(align)                                   \
233         . = ALIGN(align);                                               \
234         *(.data..cacheline_aligned)
235
236 #define INIT_TASK_DATA(align)                                           \
237         . = ALIGN(align);                                               \
238         *(.data..init_task)
239
240 /*
241  * Read only Data
242  */
243 #define RO_DATA_SECTION(align)                                          \
244         . = ALIGN((align));                                             \
245         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
246                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
247                 *(.rodata) *(.rodata.*)                                 \
248                 *(__vermagic)           /* Kernel version magic */      \
249                 . = ALIGN(8);                                           \
250                 VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .;         \
251                 *(__tracepoints_ptrs)   /* Tracepoints: pointer array */\
252                 VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .;          \
253                 *(__tracepoints_strings)/* Tracepoints: strings */      \
254         }                                                               \
255                                                                         \
256         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
257                 *(.rodata1)                                             \
258         }                                                               \
259                                                                         \
260         BUG_TABLE                                                       \
261                                                                         \
262         /* PCI quirks */                                                \
263         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
264                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
265                 *(.pci_fixup_early)                                     \
266                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
267                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
268                 *(.pci_fixup_header)                                    \
269                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
270                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
271                 *(.pci_fixup_final)                                     \
272                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
273                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
274                 *(.pci_fixup_enable)                                    \
275                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
276                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
277                 *(.pci_fixup_resume)                                    \
278                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
279                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
280                 *(.pci_fixup_resume_early)                              \
281                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
282                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
283                 *(.pci_fixup_suspend)                                   \
284                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
285         }                                                               \
286                                                                         \
287         /* Built-in firmware blobs */                                   \
288         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
289                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
290                 *(.builtin_fw)                                          \
291                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
292         }                                                               \
293                                                                         \
294         /* RapidIO route ops */                                         \
295         .rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {            \
296                 VMLINUX_SYMBOL(__start_rio_switch_ops) = .;             \
297                 *(.rio_switch_ops)                                      \
298                 VMLINUX_SYMBOL(__end_rio_switch_ops) = .;               \
299         }                                                               \
300                                                                         \
301         TRACEDATA                                                       \
302                                                                         \
303         /* Kernel symbol table: Normal symbols */                       \
304         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
305                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
306                 *(SORT(___ksymtab+*))                                   \
307                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
308         }                                                               \
309                                                                         \
310         /* Kernel symbol table: GPL-only symbols */                     \
311         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
312                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
313                 *(SORT(___ksymtab_gpl+*))                               \
314                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
315         }                                                               \
316                                                                         \
317         /* Kernel symbol table: Normal unused symbols */                \
318         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
319                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
320                 *(SORT(___ksymtab_unused+*))                            \
321                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
322         }                                                               \
323                                                                         \
324         /* Kernel symbol table: GPL-only unused symbols */              \
325         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
326                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
327                 *(SORT(___ksymtab_unused_gpl+*))                        \
328                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
329         }                                                               \
330                                                                         \
331         /* Kernel symbol table: GPL-future-only symbols */              \
332         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
333                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
334                 *(SORT(___ksymtab_gpl_future+*))                        \
335                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
336         }                                                               \
337                                                                         \
338         /* Kernel symbol table: Normal symbols */                       \
339         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
340                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
341                 *(SORT(___kcrctab+*))                                   \
342                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
343         }                                                               \
344                                                                         \
345         /* Kernel symbol table: GPL-only symbols */                     \
346         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
347                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
348                 *(SORT(___kcrctab_gpl+*))                               \
349                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
350         }                                                               \
351                                                                         \
352         /* Kernel symbol table: Normal unused symbols */                \
353         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
354                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
355                 *(SORT(___kcrctab_unused+*))                            \
356                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
357         }                                                               \
358                                                                         \
359         /* Kernel symbol table: GPL-only unused symbols */              \
360         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
361                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
362                 *(SORT(___kcrctab_unused_gpl+*))                        \
363                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
364         }                                                               \
365                                                                         \
366         /* Kernel symbol table: GPL-future-only symbols */              \
367         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
368                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
369                 *(SORT(___kcrctab_gpl_future+*))                        \
370                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
371         }                                                               \
372                                                                         \
373         /* Kernel symbol table: strings */                              \
374         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
375                 *(__ksymtab_strings)                                    \
376         }                                                               \
377                                                                         \
378         /* __*init sections */                                          \
379         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
380                 *(.ref.rodata)                                          \
381                 DEV_KEEP(init.rodata)                                   \
382                 DEV_KEEP(exit.rodata)                                   \
383                 CPU_KEEP(init.rodata)                                   \
384                 CPU_KEEP(exit.rodata)                                   \
385                 MEM_KEEP(init.rodata)                                   \
386                 MEM_KEEP(exit.rodata)                                   \
387         }                                                               \
388                                                                         \
389         /* Built-in module parameters. */                               \
390         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
391                 VMLINUX_SYMBOL(__start___param) = .;                    \
392                 *(__param)                                              \
393                 VMLINUX_SYMBOL(__stop___param) = .;                     \
394         }                                                               \
395                                                                         \
396         /* Built-in module versions. */                                 \
397         __modver : AT(ADDR(__modver) - LOAD_OFFSET) {                   \
398                 VMLINUX_SYMBOL(__start___modver) = .;                   \
399                 *(__modver)                                             \
400                 VMLINUX_SYMBOL(__stop___modver) = .;                    \
401                 . = ALIGN((align));                                     \
402                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
403         }                                                               \
404         . = ALIGN((align));
405
406 /* RODATA & RO_DATA provided for backward compatibility.
407  * All archs are supposed to use RO_DATA() */
408 #define RODATA          RO_DATA_SECTION(4096)
409 #define RO_DATA(align)  RO_DATA_SECTION(align)
410
411 #define SECURITY_INIT                                                   \
412         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
413                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
414                 *(.security_initcall.init)                              \
415                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
416         }
417
418 /* .text section. Map to function alignment to avoid address changes
419  * during second ld run in second ld pass when generating System.map */
420 #define TEXT_TEXT                                                       \
421                 ALIGN_FUNCTION();                                       \
422                 *(.text.hot)                                            \
423                 *(.text)                                                \
424                 *(.ref.text)                                            \
425         DEV_KEEP(init.text)                                             \
426         DEV_KEEP(exit.text)                                             \
427         CPU_KEEP(init.text)                                             \
428         CPU_KEEP(exit.text)                                             \
429         MEM_KEEP(init.text)                                             \
430         MEM_KEEP(exit.text)                                             \
431                 *(.text.unlikely)
432
433
434 /* sched.text is aling to function alignment to secure we have same
435  * address even at second ld pass when generating System.map */
436 #define SCHED_TEXT                                                      \
437                 ALIGN_FUNCTION();                                       \
438                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
439                 *(.sched.text)                                          \
440                 VMLINUX_SYMBOL(__sched_text_end) = .;
441
442 /* spinlock.text is aling to function alignment to secure we have same
443  * address even at second ld pass when generating System.map */
444 #define LOCK_TEXT                                                       \
445                 ALIGN_FUNCTION();                                       \
446                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
447                 *(.spinlock.text)                                       \
448                 VMLINUX_SYMBOL(__lock_text_end) = .;
449
450 #define KPROBES_TEXT                                                    \
451                 ALIGN_FUNCTION();                                       \
452                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
453                 *(.kprobes.text)                                        \
454                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
455
456 #define ENTRY_TEXT                                                      \
457                 ALIGN_FUNCTION();                                       \
458                 VMLINUX_SYMBOL(__entry_text_start) = .;                 \
459                 *(.entry.text)                                          \
460                 VMLINUX_SYMBOL(__entry_text_end) = .;
461
462 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
463 #define IRQENTRY_TEXT                                                   \
464                 ALIGN_FUNCTION();                                       \
465                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
466                 *(.irqentry.text)                                       \
467                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
468 #else
469 #define IRQENTRY_TEXT
470 #endif
471
472 /* Section used for early init (in .S files) */
473 #define HEAD_TEXT  *(.head.text)
474
475 #define HEAD_TEXT_SECTION                                                       \
476         .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {               \
477                 HEAD_TEXT                                               \
478         }
479
480 /*
481  * Exception table
482  */
483 #define EXCEPTION_TABLE(align)                                          \
484         . = ALIGN(align);                                               \
485         __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {               \
486                 VMLINUX_SYMBOL(__start___ex_table) = .;                 \
487                 *(__ex_table)                                           \
488                 VMLINUX_SYMBOL(__stop___ex_table) = .;                  \
489         }
490
491 /*
492  * Init task
493  */
494 #define INIT_TASK_DATA_SECTION(align)                                   \
495         . = ALIGN(align);                                               \
496         .data..init_task :  AT(ADDR(.data..init_task) - LOAD_OFFSET) {  \
497                 INIT_TASK_DATA(align)                                   \
498         }
499
500 #ifdef CONFIG_CONSTRUCTORS
501 #define KERNEL_CTORS()  . = ALIGN(8);                      \
502                         VMLINUX_SYMBOL(__ctors_start) = .; \
503                         *(.ctors)                          \
504                         VMLINUX_SYMBOL(__ctors_end) = .;
505 #else
506 #define KERNEL_CTORS()
507 #endif
508
509 /* init and exit section handling */
510 #define INIT_DATA                                                       \
511         *(.init.data)                                                   \
512         DEV_DISCARD(init.data)                                          \
513         CPU_DISCARD(init.data)                                          \
514         MEM_DISCARD(init.data)                                          \
515         KERNEL_CTORS()                                                  \
516         MCOUNT_REC()                                                    \
517         *(.init.rodata)                                                 \
518         FTRACE_EVENTS()                                                 \
519         TRACE_SYSCALLS()                                                \
520         DEV_DISCARD(init.rodata)                                        \
521         CPU_DISCARD(init.rodata)                                        \
522         MEM_DISCARD(init.rodata)                                        \
523         CLK_OF_TABLES()                                                 \
524         CLKSRC_OF_TABLES()                                              \
525         KERNEL_DTB()                                                    \
526         IRQCHIP_OF_MATCH_TABLE()
527
528 #define INIT_TEXT                                                       \
529         *(.init.text)                                                   \
530         DEV_DISCARD(init.text)                                          \
531         CPU_DISCARD(init.text)                                          \
532         MEM_DISCARD(init.text)
533
534 #define EXIT_DATA                                                       \
535         *(.exit.data)                                                   \
536         DEV_DISCARD(exit.data)                                          \
537         DEV_DISCARD(exit.rodata)                                        \
538         CPU_DISCARD(exit.data)                                          \
539         CPU_DISCARD(exit.rodata)                                        \
540         MEM_DISCARD(exit.data)                                          \
541         MEM_DISCARD(exit.rodata)
542
543 #define EXIT_TEXT                                                       \
544         *(.exit.text)                                                   \
545         DEV_DISCARD(exit.text)                                          \
546         CPU_DISCARD(exit.text)                                          \
547         MEM_DISCARD(exit.text)
548
549 #define EXIT_CALL                                                       \
550         *(.exitcall.exit)
551
552 /*
553  * bss (Block Started by Symbol) - uninitialized data
554  * zeroed during startup
555  */
556 #define SBSS(sbss_align)                                                \
557         . = ALIGN(sbss_align);                                          \
558         .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {                         \
559                 *(.sbss)                                                \
560                 *(.scommon)                                             \
561         }
562
563 /*
564  * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
565  * sections to the front of bss.
566  */
567 #ifndef BSS_FIRST_SECTIONS
568 #define BSS_FIRST_SECTIONS
569 #endif
570
571 #define BSS(bss_align)                                                  \
572         . = ALIGN(bss_align);                                           \
573         .bss : AT(ADDR(.bss) - LOAD_OFFSET) {                           \
574                 BSS_FIRST_SECTIONS                                      \
575                 *(.bss..page_aligned)                                   \
576                 *(.dynbss)                                              \
577                 *(.bss)                                                 \
578                 *(COMMON)                                               \
579         }
580
581 /*
582  * DWARF debug sections.
583  * Symbols in the DWARF debugging sections are relative to
584  * the beginning of the section so we begin them at 0.
585  */
586 #define DWARF_DEBUG                                                     \
587                 /* DWARF 1 */                                           \
588                 .debug          0 : { *(.debug) }                       \
589                 .line           0 : { *(.line) }                        \
590                 /* GNU DWARF 1 extensions */                            \
591                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
592                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
593                 /* DWARF 1.1 and DWARF 2 */                             \
594                 .debug_aranges  0 : { *(.debug_aranges) }               \
595                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
596                 /* DWARF 2 */                                           \
597                 .debug_info     0 : { *(.debug_info                     \
598                                 .gnu.linkonce.wi.*) }                   \
599                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
600                 .debug_line     0 : { *(.debug_line) }                  \
601                 .debug_frame    0 : { *(.debug_frame) }                 \
602                 .debug_str      0 : { *(.debug_str) }                   \
603                 .debug_loc      0 : { *(.debug_loc) }                   \
604                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
605                 /* SGI/MIPS DWARF 2 extensions */                       \
606                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
607                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
608                 .debug_typenames 0 : { *(.debug_typenames) }            \
609                 .debug_varnames  0 : { *(.debug_varnames) }             \
610
611                 /* Stabs debugging sections.  */
612 #define STABS_DEBUG                                                     \
613                 .stab 0 : { *(.stab) }                                  \
614                 .stabstr 0 : { *(.stabstr) }                            \
615                 .stab.excl 0 : { *(.stab.excl) }                        \
616                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
617                 .stab.index 0 : { *(.stab.index) }                      \
618                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
619                 .comment 0 : { *(.comment) }
620
621 #ifdef CONFIG_GENERIC_BUG
622 #define BUG_TABLE                                                       \
623         . = ALIGN(8);                                                   \
624         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
625                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
626                 *(__bug_table)                                          \
627                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
628         }
629 #else
630 #define BUG_TABLE
631 #endif
632
633 #ifdef CONFIG_PM_TRACE
634 #define TRACEDATA                                                       \
635         . = ALIGN(4);                                                   \
636         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
637                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
638                 *(.tracedata)                                           \
639                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
640         }
641 #else
642 #define TRACEDATA
643 #endif
644
645 #define NOTES                                                           \
646         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
647                 VMLINUX_SYMBOL(__start_notes) = .;                      \
648                 *(.note.*)                                              \
649                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
650         }
651
652 #define INIT_SETUP(initsetup_align)                                     \
653                 . = ALIGN(initsetup_align);                             \
654                 VMLINUX_SYMBOL(__setup_start) = .;                      \
655                 *(.init.setup)                                          \
656                 VMLINUX_SYMBOL(__setup_end) = .;
657
658 #define INIT_CALLS_LEVEL(level)                                         \
659                 VMLINUX_SYMBOL(__initcall##level##_start) = .;          \
660                 *(.initcall##level##.init)                              \
661                 *(.initcall##level##s.init)                             \
662
663 #define INIT_CALLS                                                      \
664                 VMLINUX_SYMBOL(__initcall_start) = .;                   \
665                 *(.initcallearly.init)                                  \
666                 INIT_CALLS_LEVEL(0)                                     \
667                 INIT_CALLS_LEVEL(1)                                     \
668                 INIT_CALLS_LEVEL(2)                                     \
669                 INIT_CALLS_LEVEL(3)                                     \
670                 INIT_CALLS_LEVEL(4)                                     \
671                 INIT_CALLS_LEVEL(5)                                     \
672                 INIT_CALLS_LEVEL(rootfs)                                \
673                 INIT_CALLS_LEVEL(6)                                     \
674                 INIT_CALLS_LEVEL(7)                                     \
675                 VMLINUX_SYMBOL(__initcall_end) = .;
676
677 #define CON_INITCALL                                                    \
678                 VMLINUX_SYMBOL(__con_initcall_start) = .;               \
679                 *(.con_initcall.init)                                   \
680                 VMLINUX_SYMBOL(__con_initcall_end) = .;
681
682 #define SECURITY_INITCALL                                               \
683                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
684                 *(.security_initcall.init)                              \
685                 VMLINUX_SYMBOL(__security_initcall_end) = .;
686
687 #ifdef CONFIG_BLK_DEV_INITRD
688 #define INIT_RAM_FS                                                     \
689         . = ALIGN(4);                                                   \
690         VMLINUX_SYMBOL(__initramfs_start) = .;                          \
691         *(.init.ramfs)                                                  \
692         . = ALIGN(8);                                                   \
693         *(.init.ramfs.info)
694 #else
695 #define INIT_RAM_FS
696 #endif
697
698 /*
699  * Default discarded sections.
700  *
701  * Some archs want to discard exit text/data at runtime rather than
702  * link time due to cross-section references such as alt instructions,
703  * bug table, eh_frame, etc.  DISCARDS must be the last of output
704  * section definitions so that such archs put those in earlier section
705  * definitions.
706  */
707 #define DISCARDS                                                        \
708         /DISCARD/ : {                                                   \
709         EXIT_TEXT                                                       \
710         EXIT_DATA                                                       \
711         EXIT_CALL                                                       \
712         *(.discard)                                                     \
713         *(.discard.*)                                                   \
714         }
715
716 /**
717  * PERCPU_INPUT - the percpu input sections
718  * @cacheline: cacheline size
719  *
720  * The core percpu section names and core symbols which do not rely
721  * directly upon load addresses.
722  *
723  * @cacheline is used to align subsections to avoid false cacheline
724  * sharing between subsections for different purposes.
725  */
726 #define PERCPU_INPUT(cacheline)                                         \
727         VMLINUX_SYMBOL(__per_cpu_start) = .;                            \
728         *(.data..percpu..first)                                         \
729         . = ALIGN(PAGE_SIZE);                                           \
730         *(.data..percpu..page_aligned)                                  \
731         . = ALIGN(cacheline);                                           \
732         *(.data..percpu..readmostly)                                    \
733         . = ALIGN(cacheline);                                           \
734         *(.data..percpu)                                                \
735         *(.data..percpu..shared_aligned)                                \
736         VMLINUX_SYMBOL(__per_cpu_end) = .;
737
738 /**
739  * PERCPU_VADDR - define output section for percpu area
740  * @cacheline: cacheline size
741  * @vaddr: explicit base address (optional)
742  * @phdr: destination PHDR (optional)
743  *
744  * Macro which expands to output section for percpu area.
745  *
746  * @cacheline is used to align subsections to avoid false cacheline
747  * sharing between subsections for different purposes.
748  *
749  * If @vaddr is not blank, it specifies explicit base address and all
750  * percpu symbols will be offset from the given address.  If blank,
751  * @vaddr always equals @laddr + LOAD_OFFSET.
752  *
753  * @phdr defines the output PHDR to use if not blank.  Be warned that
754  * output PHDR is sticky.  If @phdr is specified, the next output
755  * section in the linker script will go there too.  @phdr should have
756  * a leading colon.
757  *
758  * Note that this macros defines __per_cpu_load as an absolute symbol.
759  * If there is no need to put the percpu section at a predetermined
760  * address, use PERCPU_SECTION.
761  */
762 #define PERCPU_VADDR(cacheline, vaddr, phdr)                            \
763         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
764         .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
765                                 - LOAD_OFFSET) {                        \
766                 PERCPU_INPUT(cacheline)                                 \
767         } phdr                                                          \
768         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
769
770 /**
771  * PERCPU_SECTION - define output section for percpu area, simple version
772  * @cacheline: cacheline size
773  *
774  * Align to PAGE_SIZE and outputs output section for percpu area.  This
775  * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
776  * __per_cpu_start will be identical.
777  *
778  * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
779  * except that __per_cpu_load is defined as a relative symbol against
780  * .data..percpu which is required for relocatable x86_32 configuration.
781  */
782 #define PERCPU_SECTION(cacheline)                                       \
783         . = ALIGN(PAGE_SIZE);                                           \
784         .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
785                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
786                 PERCPU_INPUT(cacheline)                                 \
787         }
788
789
790 /*
791  * Definition of the high level *_SECTION macros
792  * They will fit only a subset of the architectures
793  */
794
795
796 /*
797  * Writeable data.
798  * All sections are combined in a single .data section.
799  * The sections following CONSTRUCTORS are arranged so their
800  * typical alignment matches.
801  * A cacheline is typical/always less than a PAGE_SIZE so
802  * the sections that has this restriction (or similar)
803  * is located before the ones requiring PAGE_SIZE alignment.
804  * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
805  * matches the requirement of PAGE_ALIGNED_DATA.
806  *
807  * use 0 as page_align if page_aligned data is not used */
808 #define RW_DATA_SECTION(cacheline, pagealigned, inittask)               \
809         . = ALIGN(PAGE_SIZE);                                           \
810         .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
811                 INIT_TASK_DATA(inittask)                                \
812                 NOSAVE_DATA                                             \
813                 PAGE_ALIGNED_DATA(pagealigned)                          \
814                 CACHELINE_ALIGNED_DATA(cacheline)                       \
815                 READ_MOSTLY_DATA(cacheline)                             \
816                 DATA_DATA                                               \
817                 CONSTRUCTORS                                            \
818         }
819
820 #define INIT_TEXT_SECTION(inittext_align)                               \
821         . = ALIGN(inittext_align);                                      \
822         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
823                 VMLINUX_SYMBOL(_sinittext) = .;                         \
824                 INIT_TEXT                                               \
825                 VMLINUX_SYMBOL(_einittext) = .;                         \
826         }
827
828 #define INIT_DATA_SECTION(initsetup_align)                              \
829         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {               \
830                 INIT_DATA                                               \
831                 INIT_SETUP(initsetup_align)                             \
832                 INIT_CALLS                                              \
833                 CON_INITCALL                                            \
834                 SECURITY_INITCALL                                       \
835                 INIT_RAM_FS                                             \
836         }
837
838 #define BSS_SECTION(sbss_align, bss_align, stop_align)                  \
839         . = ALIGN(sbss_align);                                          \
840         VMLINUX_SYMBOL(__bss_start) = .;                                \
841         SBSS(sbss_align)                                                \
842         BSS(bss_align)                                                  \
843         . = ALIGN(stop_align);                                          \
844         VMLINUX_SYMBOL(__bss_stop) = .;