Merge tag 'v3.18' into p/abusse/merge_upgrade
[projects/modsched/linux.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  *      // __init_begin and __init_end should be page aligned, so that we can
44  *      // free the whole .init memory
45  * [_stext, _etext] is the text section
46  * [_sdata, _edata] is the data section
47  *
48  * Some of the included output section have their own set of constants.
49  * Examples are: [__initramfs_start, __initramfs_end] for initramfs and
50  *               [__nosave_begin, __nosave_end] for the nosave data
51  */
52
53 #ifndef LOAD_OFFSET
54 #define LOAD_OFFSET 0
55 #endif
56
57 #include <linux/export.h>
58
59 /* Align . to a 8 byte boundary equals to maximum function alignment. */
60 #define ALIGN_FUNCTION()  . = ALIGN(8)
61
62 /*
63  * Align to a 32 byte boundary equal to the
64  * alignment gcc 4.5 uses for a struct
65  */
66 #define STRUCT_ALIGNMENT 32
67 #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT)
68
69 /* The actual configuration determine if the init/exit sections
70  * are handled as text/data or they can be discarded (which
71  * often happens at runtime)
72  */
73 #ifdef CONFIG_HOTPLUG_CPU
74 #define CPU_KEEP(sec)    *(.cpu##sec)
75 #define CPU_DISCARD(sec)
76 #else
77 #define CPU_KEEP(sec)
78 #define CPU_DISCARD(sec) *(.cpu##sec)
79 #endif
80
81 #if defined(CONFIG_MEMORY_HOTPLUG)
82 #define MEM_KEEP(sec)    *(.mem##sec)
83 #define MEM_DISCARD(sec)
84 #else
85 #define MEM_KEEP(sec)
86 #define MEM_DISCARD(sec) *(.mem##sec)
87 #endif
88
89 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
90 #define MCOUNT_REC()    . = ALIGN(8);                           \
91                         VMLINUX_SYMBOL(__start_mcount_loc) = .; \
92                         *(__mcount_loc)                         \
93                         VMLINUX_SYMBOL(__stop_mcount_loc) = .;
94 #else
95 #define MCOUNT_REC()
96 #endif
97
98 #ifdef CONFIG_TRACE_BRANCH_PROFILING
99 #define LIKELY_PROFILE()        VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
100                                 *(_ftrace_annotated_branch)                           \
101                                 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
102 #else
103 #define LIKELY_PROFILE()
104 #endif
105
106 #ifdef CONFIG_PROFILE_ALL_BRANCHES
107 #define BRANCH_PROFILE()        VMLINUX_SYMBOL(__start_branch_profile) = .;   \
108                                 *(_ftrace_branch)                             \
109                                 VMLINUX_SYMBOL(__stop_branch_profile) = .;
110 #else
111 #define BRANCH_PROFILE()
112 #endif
113
114 #ifdef CONFIG_KPROBES
115 #define KPROBE_BLACKLIST()      . = ALIGN(8);                                 \
116                                 VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \
117                                 *(_kprobe_blacklist)                          \
118                                 VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .;
119 #else
120 #define KPROBE_BLACKLIST()
121 #endif
122
123 #ifdef CONFIG_EVENT_TRACING
124 #define FTRACE_EVENTS() . = ALIGN(8);                                   \
125                         VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
126                         *(_ftrace_events)                               \
127                         VMLINUX_SYMBOL(__stop_ftrace_events) = .;
128 #else
129 #define FTRACE_EVENTS()
130 #endif
131
132 #ifdef CONFIG_TRACING
133 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
134                          *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
135                          VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
136 #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .;  \
137                          *(__tracepoint_str) /* Trace_printk fmt' pointer */ \
138                          VMLINUX_SYMBOL(__stop___tracepoint_str) = .;
139 #else
140 #define TRACE_PRINTKS()
141 #define TRACEPOINT_STR()
142 #endif
143
144 #ifdef CONFIG_FTRACE_SYSCALLS
145 #define TRACE_SYSCALLS() . = ALIGN(8);                                  \
146                          VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
147                          *(__syscalls_metadata)                         \
148                          VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
149 #else
150 #define TRACE_SYSCALLS()
151 #endif
152
153
154 #define ___OF_TABLE(cfg, name)  _OF_TABLE_##cfg(name)
155 #define __OF_TABLE(cfg, name)   ___OF_TABLE(cfg, name)
156 #define OF_TABLE(cfg, name)     __OF_TABLE(config_enabled(cfg), name)
157 #define _OF_TABLE_0(name)
158 #define _OF_TABLE_1(name)                                               \
159         . = ALIGN(8);                                                   \
160         VMLINUX_SYMBOL(__##name##_of_table) = .;                        \
161         *(__##name##_of_table)                                          \
162         *(__##name##_of_table_end)
163
164 #define CLKSRC_OF_TABLES()      OF_TABLE(CONFIG_CLKSRC_OF, clksrc)
165 #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip)
166 #define CLK_OF_TABLES()         OF_TABLE(CONFIG_COMMON_CLK, clk)
167 #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem)
168 #define CPU_METHOD_OF_TABLES()  OF_TABLE(CONFIG_SMP, cpu_method)
169 #define EARLYCON_OF_TABLES()    OF_TABLE(CONFIG_SERIAL_EARLYCON, earlycon)
170
171 #define KERNEL_DTB()                                                    \
172         STRUCT_ALIGN();                                                 \
173         VMLINUX_SYMBOL(__dtb_start) = .;                                \
174         *(.dtb.init.rodata)                                             \
175         VMLINUX_SYMBOL(__dtb_end) = .;
176
177 /* .data section */
178 #define DATA_DATA                                                       \
179         *(.data)                                                        \
180         *(.ref.data)                                                    \
181         *(.data..shared_aligned) /* percpu related */                   \
182         MEM_KEEP(init.data)                                             \
183         MEM_KEEP(exit.data)                                             \
184         *(.data.unlikely)                                               \
185         STRUCT_ALIGN();                                                 \
186         *(__tracepoints)                                                \
187         /* implement dynamic printk debug */                            \
188         . = ALIGN(8);                                                   \
189         VMLINUX_SYMBOL(__start___jump_table) = .;                       \
190         *(__jump_table)                                                 \
191         VMLINUX_SYMBOL(__stop___jump_table) = .;                        \
192         . = ALIGN(8);                                                   \
193         VMLINUX_SYMBOL(__start___verbose) = .;                          \
194         *(__verbose)                                                    \
195         VMLINUX_SYMBOL(__stop___verbose) = .;                           \
196         LIKELY_PROFILE()                                                \
197         BRANCH_PROFILE()                                                \
198         TRACE_PRINTKS()                                                 \
199         TRACEPOINT_STR()
200
201 /*
202  * Data section helpers
203  */
204 #define NOSAVE_DATA                                                     \
205         . = ALIGN(PAGE_SIZE);                                           \
206         VMLINUX_SYMBOL(__nosave_begin) = .;                             \
207         *(.data..nosave)                                                \
208         . = ALIGN(PAGE_SIZE);                                           \
209         VMLINUX_SYMBOL(__nosave_end) = .;
210
211 #define PAGE_ALIGNED_DATA(page_align)                                   \
212         . = ALIGN(page_align);                                          \
213         *(.data..page_aligned)
214
215 #define READ_MOSTLY_DATA(align)                                         \
216         . = ALIGN(align);                                               \
217         *(.data..read_mostly)                                           \
218         . = ALIGN(align);
219
220 #define CACHELINE_ALIGNED_DATA(align)                                   \
221         . = ALIGN(align);                                               \
222         *(.data..cacheline_aligned)
223
224 #define INIT_TASK_DATA(align)                                           \
225         . = ALIGN(align);                                               \
226         *(.data..init_task)
227
228 /*
229  * Read only Data
230  */
231 #define RO_DATA_SECTION(align)                                          \
232         . = ALIGN((align));                                             \
233         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
234                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
235                 *(.rodata) *(.rodata.*)                                 \
236                 *(__vermagic)           /* Kernel version magic */      \
237                 . = ALIGN(8);                                           \
238                 VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .;         \
239                 *(__tracepoints_ptrs)   /* Tracepoints: pointer array */\
240                 VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .;          \
241                 *(__tracepoints_strings)/* Tracepoints: strings */      \
242         }                                                               \
243                                                                         \
244         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
245                 *(.rodata1)                                             \
246         }                                                               \
247                                                                         \
248         BUG_TABLE                                                       \
249                                                                         \
250         /* PCI quirks */                                                \
251         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
252                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
253                 *(.pci_fixup_early)                                     \
254                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
255                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
256                 *(.pci_fixup_header)                                    \
257                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
258                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
259                 *(.pci_fixup_final)                                     \
260                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
261                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
262                 *(.pci_fixup_enable)                                    \
263                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
264                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
265                 *(.pci_fixup_resume)                                    \
266                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
267                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
268                 *(.pci_fixup_resume_early)                              \
269                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
270                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
271                 *(.pci_fixup_suspend)                                   \
272                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
273                 VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .;    \
274                 *(.pci_fixup_suspend_late)                              \
275                 VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .;      \
276         }                                                               \
277                                                                         \
278         /* Built-in firmware blobs */                                   \
279         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
280                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
281                 *(.builtin_fw)                                          \
282                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
283         }                                                               \
284                                                                         \
285         TRACEDATA                                                       \
286                                                                         \
287         /* Kernel symbol table: Normal symbols */                       \
288         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
289                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
290                 *(SORT(___ksymtab+*))                                   \
291                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
292         }                                                               \
293                                                                         \
294         /* Kernel symbol table: GPL-only symbols */                     \
295         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
296                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
297                 *(SORT(___ksymtab_gpl+*))                               \
298                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
299         }                                                               \
300                                                                         \
301         /* Kernel symbol table: Normal unused symbols */                \
302         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
303                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
304                 *(SORT(___ksymtab_unused+*))                            \
305                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
306         }                                                               \
307                                                                         \
308         /* Kernel symbol table: GPL-only unused symbols */              \
309         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
310                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
311                 *(SORT(___ksymtab_unused_gpl+*))                        \
312                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
313         }                                                               \
314                                                                         \
315         /* Kernel symbol table: GPL-future-only symbols */              \
316         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
317                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
318                 *(SORT(___ksymtab_gpl_future+*))                        \
319                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
320         }                                                               \
321                                                                         \
322         /* Kernel symbol table: Normal symbols */                       \
323         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
324                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
325                 *(SORT(___kcrctab+*))                                   \
326                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
327         }                                                               \
328                                                                         \
329         /* Kernel symbol table: GPL-only symbols */                     \
330         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
331                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
332                 *(SORT(___kcrctab_gpl+*))                               \
333                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
334         }                                                               \
335                                                                         \
336         /* Kernel symbol table: Normal unused symbols */                \
337         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
338                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
339                 *(SORT(___kcrctab_unused+*))                            \
340                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
341         }                                                               \
342                                                                         \
343         /* Kernel symbol table: GPL-only unused symbols */              \
344         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
345                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
346                 *(SORT(___kcrctab_unused_gpl+*))                        \
347                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
348         }                                                               \
349                                                                         \
350         /* Kernel symbol table: GPL-future-only symbols */              \
351         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
352                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
353                 *(SORT(___kcrctab_gpl_future+*))                        \
354                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
355         }                                                               \
356                                                                         \
357         /* Kernel symbol table: strings */                              \
358         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
359                 *(__ksymtab_strings)                                    \
360         }                                                               \
361                                                                         \
362         /* __*init sections */                                          \
363         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
364                 *(.ref.rodata)                                          \
365                 MEM_KEEP(init.rodata)                                   \
366                 MEM_KEEP(exit.rodata)                                   \
367         }                                                               \
368                                                                         \
369         /* Built-in module parameters. */                               \
370         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
371                 VMLINUX_SYMBOL(__start___param) = .;                    \
372                 *(__param)                                              \
373                 VMLINUX_SYMBOL(__stop___param) = .;                     \
374         }                                                               \
375                                                                         \
376         /* Built-in module versions. */                                 \
377         __modver : AT(ADDR(__modver) - LOAD_OFFSET) {                   \
378                 VMLINUX_SYMBOL(__start___modver) = .;                   \
379                 *(__modver)                                             \
380                 VMLINUX_SYMBOL(__stop___modver) = .;                    \
381                 . = ALIGN((align));                                     \
382                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
383         }                                                               \
384         . = ALIGN((align));
385
386 /* RODATA & RO_DATA provided for backward compatibility.
387  * All archs are supposed to use RO_DATA() */
388 #define RODATA          RO_DATA_SECTION(4096)
389 #define RO_DATA(align)  RO_DATA_SECTION(align)
390
391 #define SECURITY_INIT                                                   \
392         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
393                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
394                 *(.security_initcall.init)                              \
395                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
396         }
397
398 /* .text section. Map to function alignment to avoid address changes
399  * during second ld run in second ld pass when generating System.map */
400 #define TEXT_TEXT                                                       \
401                 ALIGN_FUNCTION();                                       \
402                 *(.text.hot)                                            \
403                 *(.text)                                                \
404                 *(.ref.text)                                            \
405         MEM_KEEP(init.text)                                             \
406         MEM_KEEP(exit.text)                                             \
407                 *(.text.unlikely)
408
409
410 /* sched.text is aling to function alignment to secure we have same
411  * address even at second ld pass when generating System.map */
412 #define SCHED_TEXT                                                      \
413                 ALIGN_FUNCTION();                                       \
414                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
415                 *(.sched.text)                                          \
416                 VMLINUX_SYMBOL(__sched_text_end) = .;
417
418 /* spinlock.text is aling to function alignment to secure we have same
419  * address even at second ld pass when generating System.map */
420 #define LOCK_TEXT                                                       \
421                 ALIGN_FUNCTION();                                       \
422                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
423                 *(.spinlock.text)                                       \
424                 VMLINUX_SYMBOL(__lock_text_end) = .;
425
426 #define KPROBES_TEXT                                                    \
427                 ALIGN_FUNCTION();                                       \
428                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
429                 *(.kprobes.text)                                        \
430                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
431
432 #define ENTRY_TEXT                                                      \
433                 ALIGN_FUNCTION();                                       \
434                 VMLINUX_SYMBOL(__entry_text_start) = .;                 \
435                 *(.entry.text)                                          \
436                 VMLINUX_SYMBOL(__entry_text_end) = .;
437
438 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
439 #define IRQENTRY_TEXT                                                   \
440                 ALIGN_FUNCTION();                                       \
441                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
442                 *(.irqentry.text)                                       \
443                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
444 #else
445 #define IRQENTRY_TEXT
446 #endif
447
448 /* Section used for early init (in .S files) */
449 #define HEAD_TEXT  *(.head.text)
450
451 #define HEAD_TEXT_SECTION                                                       \
452         .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {               \
453                 HEAD_TEXT                                               \
454         }
455
456 /*
457  * Exception table
458  */
459 #define EXCEPTION_TABLE(align)                                          \
460         . = ALIGN(align);                                               \
461         __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {               \
462                 VMLINUX_SYMBOL(__start___ex_table) = .;                 \
463                 *(__ex_table)                                           \
464                 VMLINUX_SYMBOL(__stop___ex_table) = .;                  \
465         }
466
467 /*
468  * Init task
469  */
470 #define INIT_TASK_DATA_SECTION(align)                                   \
471         . = ALIGN(align);                                               \
472         .data..init_task :  AT(ADDR(.data..init_task) - LOAD_OFFSET) {  \
473                 INIT_TASK_DATA(align)                                   \
474         }
475
476 #ifdef CONFIG_CONSTRUCTORS
477 #define KERNEL_CTORS()  . = ALIGN(8);                      \
478                         VMLINUX_SYMBOL(__ctors_start) = .; \
479                         *(.ctors)                          \
480                         *(.init_array)                     \
481                         VMLINUX_SYMBOL(__ctors_end) = .;
482 #else
483 #define KERNEL_CTORS()
484 #endif
485
486 /* init and exit section handling */
487 #define INIT_DATA                                                       \
488         *(.init.data)                                                   \
489         MEM_DISCARD(init.data)                                          \
490         KERNEL_CTORS()                                                  \
491         MCOUNT_REC()                                                    \
492         *(.init.rodata)                                                 \
493         FTRACE_EVENTS()                                                 \
494         TRACE_SYSCALLS()                                                \
495         KPROBE_BLACKLIST()                                              \
496         MEM_DISCARD(init.rodata)                                        \
497         CLK_OF_TABLES()                                                 \
498         RESERVEDMEM_OF_TABLES()                                         \
499         CLKSRC_OF_TABLES()                                              \
500         CPU_METHOD_OF_TABLES()                                          \
501         KERNEL_DTB()                                                    \
502         IRQCHIP_OF_MATCH_TABLE()                                        \
503         EARLYCON_OF_TABLES()
504
505 #define INIT_TEXT                                                       \
506         *(.init.text)                                                   \
507         MEM_DISCARD(init.text)
508
509 #define EXIT_DATA                                                       \
510         *(.exit.data)                                                   \
511         MEM_DISCARD(exit.data)                                          \
512         MEM_DISCARD(exit.rodata)
513
514 #define EXIT_TEXT                                                       \
515         *(.exit.text)                                                   \
516         MEM_DISCARD(exit.text)
517
518 #define EXIT_CALL                                                       \
519         *(.exitcall.exit)
520
521 /*
522  * bss (Block Started by Symbol) - uninitialized data
523  * zeroed during startup
524  */
525 #define SBSS(sbss_align)                                                \
526         . = ALIGN(sbss_align);                                          \
527         .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {                         \
528                 *(.sbss)                                                \
529                 *(.scommon)                                             \
530         }
531
532 /*
533  * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
534  * sections to the front of bss.
535  */
536 #ifndef BSS_FIRST_SECTIONS
537 #define BSS_FIRST_SECTIONS
538 #endif
539
540 #define BSS(bss_align)                                                  \
541         . = ALIGN(bss_align);                                           \
542         .bss : AT(ADDR(.bss) - LOAD_OFFSET) {                           \
543                 BSS_FIRST_SECTIONS                                      \
544                 *(.bss..page_aligned)                                   \
545                 *(.dynbss)                                              \
546                 *(.bss)                                                 \
547                 *(COMMON)                                               \
548         }
549
550 /*
551  * DWARF debug sections.
552  * Symbols in the DWARF debugging sections are relative to
553  * the beginning of the section so we begin them at 0.
554  */
555 #define DWARF_DEBUG                                                     \
556                 /* DWARF 1 */                                           \
557                 .debug          0 : { *(.debug) }                       \
558                 .line           0 : { *(.line) }                        \
559                 /* GNU DWARF 1 extensions */                            \
560                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
561                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
562                 /* DWARF 1.1 and DWARF 2 */                             \
563                 .debug_aranges  0 : { *(.debug_aranges) }               \
564                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
565                 /* DWARF 2 */                                           \
566                 .debug_info     0 : { *(.debug_info                     \
567                                 .gnu.linkonce.wi.*) }                   \
568                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
569                 .debug_line     0 : { *(.debug_line) }                  \
570                 .debug_frame    0 : { *(.debug_frame) }                 \
571                 .debug_str      0 : { *(.debug_str) }                   \
572                 .debug_loc      0 : { *(.debug_loc) }                   \
573                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
574                 /* SGI/MIPS DWARF 2 extensions */                       \
575                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
576                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
577                 .debug_typenames 0 : { *(.debug_typenames) }            \
578                 .debug_varnames  0 : { *(.debug_varnames) }             \
579
580                 /* Stabs debugging sections.  */
581 #define STABS_DEBUG                                                     \
582                 .stab 0 : { *(.stab) }                                  \
583                 .stabstr 0 : { *(.stabstr) }                            \
584                 .stab.excl 0 : { *(.stab.excl) }                        \
585                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
586                 .stab.index 0 : { *(.stab.index) }                      \
587                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
588                 .comment 0 : { *(.comment) }
589
590 #ifdef CONFIG_GENERIC_BUG
591 #define BUG_TABLE                                                       \
592         . = ALIGN(8);                                                   \
593         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
594                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
595                 *(__bug_table)                                          \
596                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
597         }
598 #else
599 #define BUG_TABLE
600 #endif
601
602 #ifdef CONFIG_PM_TRACE
603 #define TRACEDATA                                                       \
604         . = ALIGN(4);                                                   \
605         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
606                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
607                 *(.tracedata)                                           \
608                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
609         }
610 #else
611 #define TRACEDATA
612 #endif
613
614 #define NOTES                                                           \
615         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
616                 VMLINUX_SYMBOL(__start_notes) = .;                      \
617                 *(.note.*)                                              \
618                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
619         }
620
621 #define INIT_SETUP(initsetup_align)                                     \
622                 . = ALIGN(initsetup_align);                             \
623                 VMLINUX_SYMBOL(__setup_start) = .;                      \
624                 *(.init.setup)                                          \
625                 VMLINUX_SYMBOL(__setup_end) = .;
626
627 #define INIT_CALLS_LEVEL(level)                                         \
628                 VMLINUX_SYMBOL(__initcall##level##_start) = .;          \
629                 *(.initcall##level##.init)                              \
630                 *(.initcall##level##s.init)                             \
631
632 #define INIT_CALLS                                                      \
633                 VMLINUX_SYMBOL(__initcall_start) = .;                   \
634                 *(.initcallearly.init)                                  \
635                 INIT_CALLS_LEVEL(0)                                     \
636                 INIT_CALLS_LEVEL(1)                                     \
637                 INIT_CALLS_LEVEL(2)                                     \
638                 INIT_CALLS_LEVEL(3)                                     \
639                 INIT_CALLS_LEVEL(4)                                     \
640                 INIT_CALLS_LEVEL(5)                                     \
641                 INIT_CALLS_LEVEL(rootfs)                                \
642                 INIT_CALLS_LEVEL(6)                                     \
643                 INIT_CALLS_LEVEL(7)                                     \
644                 VMLINUX_SYMBOL(__initcall_end) = .;
645
646 #define CON_INITCALL                                                    \
647                 VMLINUX_SYMBOL(__con_initcall_start) = .;               \
648                 *(.con_initcall.init)                                   \
649                 VMLINUX_SYMBOL(__con_initcall_end) = .;
650
651 #define SECURITY_INITCALL                                               \
652                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
653                 *(.security_initcall.init)                              \
654                 VMLINUX_SYMBOL(__security_initcall_end) = .;
655
656 #ifdef CONFIG_MOD_SCHED
657 #define COBAS_INITCALL                                                  \
658                 VMLINUX_SYMBOL(__fw_modules_init_start) = .;            \
659                 *(.fw.modules.init)                                     \
660                 VMLINUX_SYMBOL(__fw_modules_init_end) = .;
661 #else
662 #define COBAS_INITCALL
663 #endif
664
665 #ifdef CONFIG_BLK_DEV_INITRD
666 #define INIT_RAM_FS                                                     \
667         . = ALIGN(4);                                                   \
668         VMLINUX_SYMBOL(__initramfs_start) = .;                          \
669         *(.init.ramfs)                                                  \
670         . = ALIGN(8);                                                   \
671         *(.init.ramfs.info)
672 #else
673 #define INIT_RAM_FS
674 #endif
675
676 /*
677  * Default discarded sections.
678  *
679  * Some archs want to discard exit text/data at runtime rather than
680  * link time due to cross-section references such as alt instructions,
681  * bug table, eh_frame, etc.  DISCARDS must be the last of output
682  * section definitions so that such archs put those in earlier section
683  * definitions.
684  */
685 #define DISCARDS                                                        \
686         /DISCARD/ : {                                                   \
687         EXIT_TEXT                                                       \
688         EXIT_DATA                                                       \
689         EXIT_CALL                                                       \
690         *(.discard)                                                     \
691         *(.discard.*)                                                   \
692         }
693
694 /**
695  * PERCPU_INPUT - the percpu input sections
696  * @cacheline: cacheline size
697  *
698  * The core percpu section names and core symbols which do not rely
699  * directly upon load addresses.
700  *
701  * @cacheline is used to align subsections to avoid false cacheline
702  * sharing between subsections for different purposes.
703  */
704 #define PERCPU_INPUT(cacheline)                                         \
705         VMLINUX_SYMBOL(__per_cpu_start) = .;                            \
706         *(.data..percpu..first)                                         \
707         . = ALIGN(PAGE_SIZE);                                           \
708         *(.data..percpu..page_aligned)                                  \
709         . = ALIGN(cacheline);                                           \
710         *(.data..percpu..read_mostly)                                   \
711         . = ALIGN(cacheline);                                           \
712         *(.data..percpu)                                                \
713         *(.data..percpu..shared_aligned)                                \
714         VMLINUX_SYMBOL(__per_cpu_end) = .;
715
716 /**
717  * PERCPU_VADDR - define output section for percpu area
718  * @cacheline: cacheline size
719  * @vaddr: explicit base address (optional)
720  * @phdr: destination PHDR (optional)
721  *
722  * Macro which expands to output section for percpu area.
723  *
724  * @cacheline is used to align subsections to avoid false cacheline
725  * sharing between subsections for different purposes.
726  *
727  * If @vaddr is not blank, it specifies explicit base address and all
728  * percpu symbols will be offset from the given address.  If blank,
729  * @vaddr always equals @laddr + LOAD_OFFSET.
730  *
731  * @phdr defines the output PHDR to use if not blank.  Be warned that
732  * output PHDR is sticky.  If @phdr is specified, the next output
733  * section in the linker script will go there too.  @phdr should have
734  * a leading colon.
735  *
736  * Note that this macros defines __per_cpu_load as an absolute symbol.
737  * If there is no need to put the percpu section at a predetermined
738  * address, use PERCPU_SECTION.
739  */
740 #define PERCPU_VADDR(cacheline, vaddr, phdr)                            \
741         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
742         .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
743                                 - LOAD_OFFSET) {                        \
744                 PERCPU_INPUT(cacheline)                                 \
745         } phdr                                                          \
746         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
747
748 /**
749  * PERCPU_SECTION - define output section for percpu area, simple version
750  * @cacheline: cacheline size
751  *
752  * Align to PAGE_SIZE and outputs output section for percpu area.  This
753  * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
754  * __per_cpu_start will be identical.
755  *
756  * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
757  * except that __per_cpu_load is defined as a relative symbol against
758  * .data..percpu which is required for relocatable x86_32 configuration.
759  */
760 #define PERCPU_SECTION(cacheline)                                       \
761         . = ALIGN(PAGE_SIZE);                                           \
762         .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
763                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
764                 PERCPU_INPUT(cacheline)                                 \
765         }
766
767
768 /*
769  * Definition of the high level *_SECTION macros
770  * They will fit only a subset of the architectures
771  */
772
773
774 /*
775  * Writeable data.
776  * All sections are combined in a single .data section.
777  * The sections following CONSTRUCTORS are arranged so their
778  * typical alignment matches.
779  * A cacheline is typical/always less than a PAGE_SIZE so
780  * the sections that has this restriction (or similar)
781  * is located before the ones requiring PAGE_SIZE alignment.
782  * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
783  * matches the requirement of PAGE_ALIGNED_DATA.
784  *
785  * use 0 as page_align if page_aligned data is not used */
786 #define RW_DATA_SECTION(cacheline, pagealigned, inittask)               \
787         . = ALIGN(PAGE_SIZE);                                           \
788         .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
789                 INIT_TASK_DATA(inittask)                                \
790                 NOSAVE_DATA                                             \
791                 PAGE_ALIGNED_DATA(pagealigned)                          \
792                 CACHELINE_ALIGNED_DATA(cacheline)                       \
793                 READ_MOSTLY_DATA(cacheline)                             \
794                 DATA_DATA                                               \
795                 CONSTRUCTORS                                            \
796         }
797
798 #define INIT_TEXT_SECTION(inittext_align)                               \
799         . = ALIGN(inittext_align);                                      \
800         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
801                 VMLINUX_SYMBOL(_sinittext) = .;                         \
802                 INIT_TEXT                                               \
803                 VMLINUX_SYMBOL(_einittext) = .;                         \
804         }
805
806 #define INIT_DATA_SECTION(initsetup_align)                              \
807         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {               \
808                 INIT_DATA                                               \
809                 INIT_SETUP(initsetup_align)                             \
810                 INIT_CALLS                                              \
811                 CON_INITCALL                                            \
812                 SECURITY_INITCALL                                       \
813                 COBAS_INITCALL                                  \
814                 INIT_RAM_FS                                             \
815         }
816
817 #define BSS_SECTION(sbss_align, bss_align, stop_align)                  \
818         . = ALIGN(sbss_align);                                          \
819         VMLINUX_SYMBOL(__bss_start) = .;                                \
820         SBSS(sbss_align)                                                \
821         BSS(bss_align)                                                  \
822         . = ALIGN(stop_align);                                          \
823         VMLINUX_SYMBOL(__bss_stop) = .;