tracing: Replace syscall_meta_data struct array with pointer array
[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(PAGE_SIZE)
19  *      __init_end = .;
20  *
21  *      _stext = .;
22  *      TEXT_SECTION = 0
23  *      _etext = .;
24  *
25  *      _sdata = .;
26  *      RO_DATA_SECTION(PAGE_SIZE)
27  *      RW_DATA_SECTION(...)
28  *      _edata = .;
29  *
30  *      EXCEPTION_TABLE(...)
31  *      NOTES
32  *
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
153 #define KERNEL_DTB()                                                    \
154         STRUCT_ALIGN();                                                 \
155         VMLINUX_SYMBOL(__dtb_start) = .;                                \
156         *(.dtb.init.rodata)                                             \
157         VMLINUX_SYMBOL(__dtb_end) = .;
158
159 /* .data section */
160 #define DATA_DATA                                                       \
161         *(.data)                                                        \
162         *(.ref.data)                                                    \
163         *(.data..shared_aligned) /* percpu related */                   \
164         DEV_KEEP(init.data)                                             \
165         DEV_KEEP(exit.data)                                             \
166         CPU_KEEP(init.data)                                             \
167         CPU_KEEP(exit.data)                                             \
168         MEM_KEEP(init.data)                                             \
169         MEM_KEEP(exit.data)                                             \
170         STRUCT_ALIGN();                                                 \
171         *(__tracepoints)                                                \
172         /* implement dynamic printk debug */                            \
173         . = ALIGN(8);                                                   \
174         VMLINUX_SYMBOL(__start___verbose) = .;                          \
175         *(__verbose)                                                    \
176         VMLINUX_SYMBOL(__stop___verbose) = .;                           \
177         LIKELY_PROFILE()                                                \
178         BRANCH_PROFILE()                                                \
179         TRACE_PRINTKS()
180
181 /*
182  * Data section helpers
183  */
184 #define NOSAVE_DATA                                                     \
185         . = ALIGN(PAGE_SIZE);                                           \
186         VMLINUX_SYMBOL(__nosave_begin) = .;                             \
187         *(.data..nosave)                                                \
188         . = ALIGN(PAGE_SIZE);                                           \
189         VMLINUX_SYMBOL(__nosave_end) = .;
190
191 #define PAGE_ALIGNED_DATA(page_align)                                   \
192         . = ALIGN(page_align);                                          \
193         *(.data..page_aligned)
194
195 #define READ_MOSTLY_DATA(align)                                         \
196         . = ALIGN(align);                                               \
197         *(.data..read_mostly)                                           \
198         . = ALIGN(align);
199
200 #define CACHELINE_ALIGNED_DATA(align)                                   \
201         . = ALIGN(align);                                               \
202         *(.data..cacheline_aligned)
203
204 #define INIT_TASK_DATA(align)                                           \
205         . = ALIGN(align);                                               \
206         *(.data..init_task)
207
208 /*
209  * Read only Data
210  */
211 #define RO_DATA_SECTION(align)                                          \
212         . = ALIGN((align));                                             \
213         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
214                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
215                 *(.rodata) *(.rodata.*)                                 \
216                 *(__vermagic)           /* Kernel version magic */      \
217                 . = ALIGN(8);                                           \
218                 VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .;         \
219                 *(__tracepoints_ptrs)   /* Tracepoints: pointer array */\
220                 VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .;          \
221                 *(__markers_strings)    /* Markers: strings */          \
222                 *(__tracepoints_strings)/* Tracepoints: strings */      \
223         }                                                               \
224                                                                         \
225         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
226                 *(.rodata1)                                             \
227         }                                                               \
228                                                                         \
229         BUG_TABLE                                                       \
230                                                                         \
231         JUMP_TABLE                                                      \
232                                                                         \
233         /* PCI quirks */                                                \
234         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
235                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
236                 *(.pci_fixup_early)                                     \
237                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
238                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
239                 *(.pci_fixup_header)                                    \
240                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
241                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
242                 *(.pci_fixup_final)                                     \
243                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
244                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
245                 *(.pci_fixup_enable)                                    \
246                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
247                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
248                 *(.pci_fixup_resume)                                    \
249                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
250                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
251                 *(.pci_fixup_resume_early)                              \
252                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
253                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
254                 *(.pci_fixup_suspend)                                   \
255                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
256         }                                                               \
257                                                                         \
258         /* Built-in firmware blobs */                                   \
259         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
260                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
261                 *(.builtin_fw)                                          \
262                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
263         }                                                               \
264                                                                         \
265         /* RapidIO route ops */                                         \
266         .rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {            \
267                 VMLINUX_SYMBOL(__start_rio_switch_ops) = .;             \
268                 *(.rio_switch_ops)                                      \
269                 VMLINUX_SYMBOL(__end_rio_switch_ops) = .;               \
270         }                                                               \
271                                                                         \
272         TRACEDATA                                                       \
273                                                                         \
274         /* Kernel symbol table: Normal symbols */                       \
275         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
276                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
277                 *(__ksymtab)                                            \
278                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
279         }                                                               \
280                                                                         \
281         /* Kernel symbol table: GPL-only symbols */                     \
282         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
283                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
284                 *(__ksymtab_gpl)                                        \
285                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
286         }                                                               \
287                                                                         \
288         /* Kernel symbol table: Normal unused symbols */                \
289         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
290                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
291                 *(__ksymtab_unused)                                     \
292                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
293         }                                                               \
294                                                                         \
295         /* Kernel symbol table: GPL-only unused symbols */              \
296         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
297                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
298                 *(__ksymtab_unused_gpl)                                 \
299                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
300         }                                                               \
301                                                                         \
302         /* Kernel symbol table: GPL-future-only symbols */              \
303         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
304                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
305                 *(__ksymtab_gpl_future)                                 \
306                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
307         }                                                               \
308                                                                         \
309         /* Kernel symbol table: Normal symbols */                       \
310         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
311                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
312                 *(__kcrctab)                                            \
313                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
314         }                                                               \
315                                                                         \
316         /* Kernel symbol table: GPL-only symbols */                     \
317         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
318                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
319                 *(__kcrctab_gpl)                                        \
320                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
321         }                                                               \
322                                                                         \
323         /* Kernel symbol table: Normal unused symbols */                \
324         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
325                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
326                 *(__kcrctab_unused)                                     \
327                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
328         }                                                               \
329                                                                         \
330         /* Kernel symbol table: GPL-only unused symbols */              \
331         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
332                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
333                 *(__kcrctab_unused_gpl)                                 \
334                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
335         }                                                               \
336                                                                         \
337         /* Kernel symbol table: GPL-future-only symbols */              \
338         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
339                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
340                 *(__kcrctab_gpl_future)                                 \
341                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
342         }                                                               \
343                                                                         \
344         /* Kernel symbol table: strings */                              \
345         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
346                 *(__ksymtab_strings)                                    \
347         }                                                               \
348                                                                         \
349         /* __*init sections */                                          \
350         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
351                 *(.ref.rodata)                                          \
352                 DEV_KEEP(init.rodata)                                   \
353                 DEV_KEEP(exit.rodata)                                   \
354                 CPU_KEEP(init.rodata)                                   \
355                 CPU_KEEP(exit.rodata)                                   \
356                 MEM_KEEP(init.rodata)                                   \
357                 MEM_KEEP(exit.rodata)                                   \
358         }                                                               \
359                                                                         \
360         /* Built-in module parameters. */                               \
361         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
362                 VMLINUX_SYMBOL(__start___param) = .;                    \
363                 *(__param)                                              \
364                 VMLINUX_SYMBOL(__stop___param) = .;                     \
365         }                                                               \
366                                                                         \
367         /* Built-in module versions. */                                 \
368         __modver : AT(ADDR(__modver) - LOAD_OFFSET) {                   \
369                 VMLINUX_SYMBOL(__start___modver) = .;                   \
370                 *(__modver)                                             \
371                 VMLINUX_SYMBOL(__stop___modver) = .;                    \
372                 . = ALIGN((align));                                     \
373                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
374         }                                                               \
375         . = ALIGN((align));
376
377 /* RODATA & RO_DATA provided for backward compatibility.
378  * All archs are supposed to use RO_DATA() */
379 #define RODATA          RO_DATA_SECTION(4096)
380 #define RO_DATA(align)  RO_DATA_SECTION(align)
381
382 #define SECURITY_INIT                                                   \
383         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
384                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
385                 *(.security_initcall.init)                              \
386                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
387         }
388
389 /* .text section. Map to function alignment to avoid address changes
390  * during second ld run in second ld pass when generating System.map */
391 #define TEXT_TEXT                                                       \
392                 ALIGN_FUNCTION();                                       \
393                 *(.text.hot)                                            \
394                 *(.text)                                                \
395                 *(.ref.text)                                            \
396         DEV_KEEP(init.text)                                             \
397         DEV_KEEP(exit.text)                                             \
398         CPU_KEEP(init.text)                                             \
399         CPU_KEEP(exit.text)                                             \
400         MEM_KEEP(init.text)                                             \
401         MEM_KEEP(exit.text)                                             \
402                 *(.text.unlikely)
403
404
405 /* sched.text is aling to function alignment to secure we have same
406  * address even at second ld pass when generating System.map */
407 #define SCHED_TEXT                                                      \
408                 ALIGN_FUNCTION();                                       \
409                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
410                 *(.sched.text)                                          \
411                 VMLINUX_SYMBOL(__sched_text_end) = .;
412
413 /* spinlock.text is aling to function alignment to secure we have same
414  * address even at second ld pass when generating System.map */
415 #define LOCK_TEXT                                                       \
416                 ALIGN_FUNCTION();                                       \
417                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
418                 *(.spinlock.text)                                       \
419                 VMLINUX_SYMBOL(__lock_text_end) = .;
420
421 #define KPROBES_TEXT                                                    \
422                 ALIGN_FUNCTION();                                       \
423                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
424                 *(.kprobes.text)                                        \
425                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
426
427 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
428 #define IRQENTRY_TEXT                                                   \
429                 ALIGN_FUNCTION();                                       \
430                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
431                 *(.irqentry.text)                                       \
432                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
433 #else
434 #define IRQENTRY_TEXT
435 #endif
436
437 /* Section used for early init (in .S files) */
438 #define HEAD_TEXT  *(.head.text)
439
440 #define HEAD_TEXT_SECTION                                                       \
441         .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {               \
442                 HEAD_TEXT                                               \
443         }
444
445 /*
446  * Exception table
447  */
448 #define EXCEPTION_TABLE(align)                                          \
449         . = ALIGN(align);                                               \
450         __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {               \
451                 VMLINUX_SYMBOL(__start___ex_table) = .;                 \
452                 *(__ex_table)                                           \
453                 VMLINUX_SYMBOL(__stop___ex_table) = .;                  \
454         }
455
456 /*
457  * Init task
458  */
459 #define INIT_TASK_DATA_SECTION(align)                                   \
460         . = ALIGN(align);                                               \
461         .data..init_task :  AT(ADDR(.data..init_task) - LOAD_OFFSET) {  \
462                 INIT_TASK_DATA(align)                                   \
463         }
464
465 #ifdef CONFIG_CONSTRUCTORS
466 #define KERNEL_CTORS()  . = ALIGN(8);                      \
467                         VMLINUX_SYMBOL(__ctors_start) = .; \
468                         *(.ctors)                          \
469                         VMLINUX_SYMBOL(__ctors_end) = .;
470 #else
471 #define KERNEL_CTORS()
472 #endif
473
474 /* init and exit section handling */
475 #define INIT_DATA                                                       \
476         *(.init.data)                                                   \
477         DEV_DISCARD(init.data)                                          \
478         CPU_DISCARD(init.data)                                          \
479         MEM_DISCARD(init.data)                                          \
480         KERNEL_CTORS()                                                  \
481         *(.init.rodata)                                                 \
482         MCOUNT_REC()                                                    \
483         FTRACE_EVENTS()                                                 \
484         TRACE_SYSCALLS()                                                \
485         DEV_DISCARD(init.rodata)                                        \
486         CPU_DISCARD(init.rodata)                                        \
487         MEM_DISCARD(init.rodata)                                        \
488         KERNEL_DTB()
489
490 #define INIT_TEXT                                                       \
491         *(.init.text)                                                   \
492         DEV_DISCARD(init.text)                                          \
493         CPU_DISCARD(init.text)                                          \
494         MEM_DISCARD(init.text)
495
496 #define EXIT_DATA                                                       \
497         *(.exit.data)                                                   \
498         DEV_DISCARD(exit.data)                                          \
499         DEV_DISCARD(exit.rodata)                                        \
500         CPU_DISCARD(exit.data)                                          \
501         CPU_DISCARD(exit.rodata)                                        \
502         MEM_DISCARD(exit.data)                                          \
503         MEM_DISCARD(exit.rodata)
504
505 #define EXIT_TEXT                                                       \
506         *(.exit.text)                                                   \
507         DEV_DISCARD(exit.text)                                          \
508         CPU_DISCARD(exit.text)                                          \
509         MEM_DISCARD(exit.text)
510
511 #define EXIT_CALL                                                       \
512         *(.exitcall.exit)
513
514 /*
515  * bss (Block Started by Symbol) - uninitialized data
516  * zeroed during startup
517  */
518 #define SBSS(sbss_align)                                                \
519         . = ALIGN(sbss_align);                                          \
520         .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {                         \
521                 *(.sbss)                                                \
522                 *(.scommon)                                             \
523         }
524
525 #define BSS(bss_align)                                                  \
526         . = ALIGN(bss_align);                                           \
527         .bss : AT(ADDR(.bss) - LOAD_OFFSET) {                           \
528                 *(.bss..page_aligned)                                   \
529                 *(.dynbss)                                              \
530                 *(.bss)                                                 \
531                 *(COMMON)                                               \
532         }
533
534 /*
535  * DWARF debug sections.
536  * Symbols in the DWARF debugging sections are relative to
537  * the beginning of the section so we begin them at 0.
538  */
539 #define DWARF_DEBUG                                                     \
540                 /* DWARF 1 */                                           \
541                 .debug          0 : { *(.debug) }                       \
542                 .line           0 : { *(.line) }                        \
543                 /* GNU DWARF 1 extensions */                            \
544                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
545                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
546                 /* DWARF 1.1 and DWARF 2 */                             \
547                 .debug_aranges  0 : { *(.debug_aranges) }               \
548                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
549                 /* DWARF 2 */                                           \
550                 .debug_info     0 : { *(.debug_info                     \
551                                 .gnu.linkonce.wi.*) }                   \
552                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
553                 .debug_line     0 : { *(.debug_line) }                  \
554                 .debug_frame    0 : { *(.debug_frame) }                 \
555                 .debug_str      0 : { *(.debug_str) }                   \
556                 .debug_loc      0 : { *(.debug_loc) }                   \
557                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
558                 /* SGI/MIPS DWARF 2 extensions */                       \
559                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
560                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
561                 .debug_typenames 0 : { *(.debug_typenames) }            \
562                 .debug_varnames  0 : { *(.debug_varnames) }             \
563
564                 /* Stabs debugging sections.  */
565 #define STABS_DEBUG                                                     \
566                 .stab 0 : { *(.stab) }                                  \
567                 .stabstr 0 : { *(.stabstr) }                            \
568                 .stab.excl 0 : { *(.stab.excl) }                        \
569                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
570                 .stab.index 0 : { *(.stab.index) }                      \
571                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
572                 .comment 0 : { *(.comment) }
573
574 #ifdef CONFIG_GENERIC_BUG
575 #define BUG_TABLE                                                       \
576         . = ALIGN(8);                                                   \
577         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
578                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
579                 *(__bug_table)                                          \
580                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
581         }
582 #else
583 #define BUG_TABLE
584 #endif
585
586 #define JUMP_TABLE                                                      \
587         . = ALIGN(8);                                                   \
588         __jump_table : AT(ADDR(__jump_table) - LOAD_OFFSET) {           \
589                 VMLINUX_SYMBOL(__start___jump_table) = .;               \
590                 *(__jump_table)                                         \
591                 VMLINUX_SYMBOL(__stop___jump_table) = .;                \
592         }
593
594 #ifdef CONFIG_PM_TRACE
595 #define TRACEDATA                                                       \
596         . = ALIGN(4);                                                   \
597         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
598                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
599                 *(.tracedata)                                           \
600                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
601         }
602 #else
603 #define TRACEDATA
604 #endif
605
606 #define NOTES                                                           \
607         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
608                 VMLINUX_SYMBOL(__start_notes) = .;                      \
609                 *(.note.*)                                              \
610                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
611         }
612
613 #define INIT_SETUP(initsetup_align)                                     \
614                 . = ALIGN(initsetup_align);                             \
615                 VMLINUX_SYMBOL(__setup_start) = .;                      \
616                 *(.init.setup)                                          \
617                 VMLINUX_SYMBOL(__setup_end) = .;
618
619 #define INITCALLS                                                       \
620         *(.initcallearly.init)                                          \
621         VMLINUX_SYMBOL(__early_initcall_end) = .;                       \
622         *(.initcall0.init)                                              \
623         *(.initcall0s.init)                                             \
624         *(.initcall1.init)                                              \
625         *(.initcall1s.init)                                             \
626         *(.initcall2.init)                                              \
627         *(.initcall2s.init)                                             \
628         *(.initcall3.init)                                              \
629         *(.initcall3s.init)                                             \
630         *(.initcall4.init)                                              \
631         *(.initcall4s.init)                                             \
632         *(.initcall5.init)                                              \
633         *(.initcall5s.init)                                             \
634         *(.initcallrootfs.init)                                         \
635         *(.initcall6.init)                                              \
636         *(.initcall6s.init)                                             \
637         *(.initcall7.init)                                              \
638         *(.initcall7s.init)
639
640 #define INIT_CALLS                                                      \
641                 VMLINUX_SYMBOL(__initcall_start) = .;                   \
642                 INITCALLS                                               \
643                 VMLINUX_SYMBOL(__initcall_end) = .;
644
645 #define CON_INITCALL                                                    \
646                 VMLINUX_SYMBOL(__con_initcall_start) = .;               \
647                 *(.con_initcall.init)                                   \
648                 VMLINUX_SYMBOL(__con_initcall_end) = .;
649
650 #define SECURITY_INITCALL                                               \
651                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
652                 *(.security_initcall.init)                              \
653                 VMLINUX_SYMBOL(__security_initcall_end) = .;
654
655 #ifdef CONFIG_BLK_DEV_INITRD
656 #define INIT_RAM_FS                                                     \
657         . = ALIGN(4);                                                   \
658         VMLINUX_SYMBOL(__initramfs_start) = .;                          \
659         *(.init.ramfs)                                                  \
660         . = ALIGN(8);                                                   \
661         *(.init.ramfs.info)
662 #else
663 #define INIT_RAM_FS
664 #endif
665
666 /*
667  * Default discarded sections.
668  *
669  * Some archs want to discard exit text/data at runtime rather than
670  * link time due to cross-section references such as alt instructions,
671  * bug table, eh_frame, etc.  DISCARDS must be the last of output
672  * section definitions so that such archs put those in earlier section
673  * definitions.
674  */
675 #define DISCARDS                                                        \
676         /DISCARD/ : {                                                   \
677         EXIT_TEXT                                                       \
678         EXIT_DATA                                                       \
679         EXIT_CALL                                                       \
680         *(.discard)                                                     \
681         *(.discard.*)                                                   \
682         }
683
684 /**
685  * PERCPU_VADDR - define output section for percpu area
686  * @vaddr: explicit base address (optional)
687  * @phdr: destination PHDR (optional)
688  *
689  * Macro which expands to output section for percpu area.  If @vaddr
690  * is not blank, it specifies explicit base address and all percpu
691  * symbols will be offset from the given address.  If blank, @vaddr
692  * always equals @laddr + LOAD_OFFSET.
693  *
694  * @phdr defines the output PHDR to use if not blank.  Be warned that
695  * output PHDR is sticky.  If @phdr is specified, the next output
696  * section in the linker script will go there too.  @phdr should have
697  * a leading colon.
698  *
699  * Note that this macros defines __per_cpu_load as an absolute symbol.
700  * If there is no need to put the percpu section at a predetermined
701  * address, use PERCPU().
702  */
703 #define PERCPU_VADDR(vaddr, phdr)                                       \
704         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
705         .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
706                                 - LOAD_OFFSET) {                        \
707                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
708                 *(.data..percpu..first)                                 \
709                 . = ALIGN(PAGE_SIZE);                                   \
710                 *(.data..percpu..page_aligned)                          \
711                 *(.data..percpu..readmostly)                            \
712                 *(.data..percpu)                                        \
713                 *(.data..percpu..shared_aligned)                        \
714                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
715         } phdr                                                          \
716         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
717
718 /**
719  * PERCPU - define output section for percpu area, simple version
720  * @align: required alignment
721  *
722  * Align to @align and outputs output section for percpu area.  This
723  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
724  * __per_cpu_start will be identical.
725  *
726  * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
727  * that __per_cpu_load is defined as a relative symbol against
728  * .data..percpu which is required for relocatable x86_32
729  * configuration.
730  */
731 #define PERCPU(align)                                                   \
732         . = ALIGN(align);                                               \
733         .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
734                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
735                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
736                 *(.data..percpu..first)                                 \
737                 . = ALIGN(PAGE_SIZE);                                   \
738                 *(.data..percpu..page_aligned)                          \
739                 *(.data..percpu..readmostly)                            \
740                 *(.data..percpu)                                        \
741                 *(.data..percpu..shared_aligned)                        \
742                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
743         }
744
745
746 /*
747  * Definition of the high level *_SECTION macros
748  * They will fit only a subset of the architectures
749  */
750
751
752 /*
753  * Writeable data.
754  * All sections are combined in a single .data section.
755  * The sections following CONSTRUCTORS are arranged so their
756  * typical alignment matches.
757  * A cacheline is typical/always less than a PAGE_SIZE so
758  * the sections that has this restriction (or similar)
759  * is located before the ones requiring PAGE_SIZE alignment.
760  * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
761  * matches the requirment of PAGE_ALIGNED_DATA.
762  *
763  * use 0 as page_align if page_aligned data is not used */
764 #define RW_DATA_SECTION(cacheline, pagealigned, inittask)               \
765         . = ALIGN(PAGE_SIZE);                                           \
766         .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
767                 INIT_TASK_DATA(inittask)                                \
768                 NOSAVE_DATA                                             \
769                 PAGE_ALIGNED_DATA(pagealigned)                          \
770                 CACHELINE_ALIGNED_DATA(cacheline)                       \
771                 READ_MOSTLY_DATA(cacheline)                             \
772                 DATA_DATA                                               \
773                 CONSTRUCTORS                                            \
774         }
775
776 #define INIT_TEXT_SECTION(inittext_align)                               \
777         . = ALIGN(inittext_align);                                      \
778         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
779                 VMLINUX_SYMBOL(_sinittext) = .;                         \
780                 INIT_TEXT                                               \
781                 VMLINUX_SYMBOL(_einittext) = .;                         \
782         }
783
784 #define INIT_DATA_SECTION(initsetup_align)                              \
785         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {               \
786                 INIT_DATA                                               \
787                 INIT_SETUP(initsetup_align)                             \
788                 INIT_CALLS                                              \
789                 CON_INITCALL                                            \
790                 SECURITY_INITCALL                                       \
791                 INIT_RAM_FS                                             \
792         }
793
794 #define BSS_SECTION(sbss_align, bss_align, stop_align)                  \
795         . = ALIGN(sbss_align);                                          \
796         VMLINUX_SYMBOL(__bss_start) = .;                                \
797         SBSS(sbss_align)                                                \
798         BSS(bss_align)                                                  \
799         . = ALIGN(stop_align);                                          \
800         VMLINUX_SYMBOL(__bss_stop) = .;