of: Add support for linking device tree blobs into vmlinux
[linux-2.6.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() VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
128                         *(_ftrace_events)                               \
129                         VMLINUX_SYMBOL(__stop_ftrace_events) = .;
130 #else
131 #define FTRACE_EVENTS()
132 #endif
133
134 #ifdef CONFIG_TRACING
135 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
136                          *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
137                          VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
138 #else
139 #define TRACE_PRINTKS()
140 #endif
141
142 #ifdef CONFIG_FTRACE_SYSCALLS
143 #define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
144                          *(__syscalls_metadata)                         \
145                          VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
146 #else
147 #define TRACE_SYSCALLS()
148 #endif
149
150
151 #define KERNEL_DTB()                                                    \
152         STRUCT_ALIGN();                                                 \
153         VMLINUX_SYMBOL(__dtb_start) = .;                                \
154         *(.dtb.init.rodata)                                             \
155         VMLINUX_SYMBOL(__dtb_end) = .;
156
157 /* .data section */
158 #define DATA_DATA                                                       \
159         *(.data)                                                        \
160         *(.ref.data)                                                    \
161         *(.data..shared_aligned) /* percpu related */                   \
162         DEV_KEEP(init.data)                                             \
163         DEV_KEEP(exit.data)                                             \
164         CPU_KEEP(init.data)                                             \
165         CPU_KEEP(exit.data)                                             \
166         MEM_KEEP(init.data)                                             \
167         MEM_KEEP(exit.data)                                             \
168         . = ALIGN(32);                                                  \
169         VMLINUX_SYMBOL(__start___tracepoints) = .;                      \
170         *(__tracepoints)                                                \
171         VMLINUX_SYMBOL(__stop___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         STRUCT_ALIGN();                                                 \
182         FTRACE_EVENTS()                                                 \
183                                                                         \
184         STRUCT_ALIGN();                                                 \
185         TRACE_SYSCALLS()
186
187 /*
188  * Data section helpers
189  */
190 #define NOSAVE_DATA                                                     \
191         . = ALIGN(PAGE_SIZE);                                           \
192         VMLINUX_SYMBOL(__nosave_begin) = .;                             \
193         *(.data..nosave)                                                \
194         . = ALIGN(PAGE_SIZE);                                           \
195         VMLINUX_SYMBOL(__nosave_end) = .;
196
197 #define PAGE_ALIGNED_DATA(page_align)                                   \
198         . = ALIGN(page_align);                                          \
199         *(.data..page_aligned)
200
201 #define READ_MOSTLY_DATA(align)                                         \
202         . = ALIGN(align);                                               \
203         *(.data..read_mostly)
204
205 #define CACHELINE_ALIGNED_DATA(align)                                   \
206         . = ALIGN(align);                                               \
207         *(.data..cacheline_aligned)
208
209 #define INIT_TASK_DATA(align)                                           \
210         . = ALIGN(align);                                               \
211         *(.data..init_task)
212
213 /*
214  * Read only Data
215  */
216 #define RO_DATA_SECTION(align)                                          \
217         . = ALIGN((align));                                             \
218         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
219                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
220                 *(.rodata) *(.rodata.*)                                 \
221                 *(__vermagic)           /* Kernel version magic */      \
222                 *(__markers_strings)    /* Markers: strings */          \
223                 *(__tracepoints_strings)/* Tracepoints: strings */      \
224         }                                                               \
225                                                                         \
226         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
227                 *(.rodata1)                                             \
228         }                                                               \
229                                                                         \
230         BUG_TABLE                                                       \
231                                                                         \
232         JUMP_TABLE                                                      \
233                                                                         \
234         /* PCI quirks */                                                \
235         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
236                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
237                 *(.pci_fixup_early)                                     \
238                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
239                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
240                 *(.pci_fixup_header)                                    \
241                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
242                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
243                 *(.pci_fixup_final)                                     \
244                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
245                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
246                 *(.pci_fixup_enable)                                    \
247                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
248                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
249                 *(.pci_fixup_resume)                                    \
250                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
251                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
252                 *(.pci_fixup_resume_early)                              \
253                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
254                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
255                 *(.pci_fixup_suspend)                                   \
256                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
257         }                                                               \
258                                                                         \
259         /* Built-in firmware blobs */                                   \
260         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
261                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
262                 *(.builtin_fw)                                          \
263                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
264         }                                                               \
265                                                                         \
266         /* RapidIO route ops */                                         \
267         .rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {            \
268                 VMLINUX_SYMBOL(__start_rio_switch_ops) = .;             \
269                 *(.rio_switch_ops)                                      \
270                 VMLINUX_SYMBOL(__end_rio_switch_ops) = .;               \
271         }                                                               \
272                                                                         \
273         TRACEDATA                                                       \
274                                                                         \
275         /* Kernel symbol table: Normal symbols */                       \
276         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
277                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
278                 *(__ksymtab)                                            \
279                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
280         }                                                               \
281                                                                         \
282         /* Kernel symbol table: GPL-only symbols */                     \
283         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
284                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
285                 *(__ksymtab_gpl)                                        \
286                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
287         }                                                               \
288                                                                         \
289         /* Kernel symbol table: Normal unused symbols */                \
290         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
291                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
292                 *(__ksymtab_unused)                                     \
293                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
294         }                                                               \
295                                                                         \
296         /* Kernel symbol table: GPL-only unused symbols */              \
297         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
298                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
299                 *(__ksymtab_unused_gpl)                                 \
300                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
301         }                                                               \
302                                                                         \
303         /* Kernel symbol table: GPL-future-only symbols */              \
304         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
305                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
306                 *(__ksymtab_gpl_future)                                 \
307                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
308         }                                                               \
309                                                                         \
310         /* Kernel symbol table: Normal symbols */                       \
311         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
312                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
313                 *(__kcrctab)                                            \
314                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
315         }                                                               \
316                                                                         \
317         /* Kernel symbol table: GPL-only symbols */                     \
318         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
319                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
320                 *(__kcrctab_gpl)                                        \
321                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
322         }                                                               \
323                                                                         \
324         /* Kernel symbol table: Normal unused symbols */                \
325         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
326                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
327                 *(__kcrctab_unused)                                     \
328                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
329         }                                                               \
330                                                                         \
331         /* Kernel symbol table: GPL-only unused symbols */              \
332         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
333                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
334                 *(__kcrctab_unused_gpl)                                 \
335                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
336         }                                                               \
337                                                                         \
338         /* Kernel symbol table: GPL-future-only symbols */              \
339         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
340                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
341                 *(__kcrctab_gpl_future)                                 \
342                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
343         }                                                               \
344                                                                         \
345         /* Kernel symbol table: strings */                              \
346         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
347                 *(__ksymtab_strings)                                    \
348         }                                                               \
349                                                                         \
350         /* __*init sections */                                          \
351         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
352                 *(.ref.rodata)                                          \
353                 DEV_KEEP(init.rodata)                                   \
354                 DEV_KEEP(exit.rodata)                                   \
355                 CPU_KEEP(init.rodata)                                   \
356                 CPU_KEEP(exit.rodata)                                   \
357                 MEM_KEEP(init.rodata)                                   \
358                 MEM_KEEP(exit.rodata)                                   \
359         }                                                               \
360                                                                         \
361         /* Built-in module parameters. */                               \
362         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
363                 VMLINUX_SYMBOL(__start___param) = .;                    \
364                 *(__param)                                              \
365                 VMLINUX_SYMBOL(__stop___param) = .;                     \
366                 . = ALIGN((align));                                     \
367                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
368         }                                                               \
369         . = ALIGN((align));
370
371 /* RODATA & RO_DATA provided for backward compatibility.
372  * All archs are supposed to use RO_DATA() */
373 #define RODATA          RO_DATA_SECTION(4096)
374 #define RO_DATA(align)  RO_DATA_SECTION(align)
375
376 #define SECURITY_INIT                                                   \
377         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
378                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
379                 *(.security_initcall.init)                              \
380                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
381         }
382
383 /* .text section. Map to function alignment to avoid address changes
384  * during second ld run in second ld pass when generating System.map */
385 #define TEXT_TEXT                                                       \
386                 ALIGN_FUNCTION();                                       \
387                 *(.text.hot)                                            \
388                 *(.text)                                                \
389                 *(.ref.text)                                            \
390         DEV_KEEP(init.text)                                             \
391         DEV_KEEP(exit.text)                                             \
392         CPU_KEEP(init.text)                                             \
393         CPU_KEEP(exit.text)                                             \
394         MEM_KEEP(init.text)                                             \
395         MEM_KEEP(exit.text)                                             \
396                 *(.text.unlikely)
397
398
399 /* sched.text is aling to function alignment to secure we have same
400  * address even at second ld pass when generating System.map */
401 #define SCHED_TEXT                                                      \
402                 ALIGN_FUNCTION();                                       \
403                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
404                 *(.sched.text)                                          \
405                 VMLINUX_SYMBOL(__sched_text_end) = .;
406
407 /* spinlock.text is aling to function alignment to secure we have same
408  * address even at second ld pass when generating System.map */
409 #define LOCK_TEXT                                                       \
410                 ALIGN_FUNCTION();                                       \
411                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
412                 *(.spinlock.text)                                       \
413                 VMLINUX_SYMBOL(__lock_text_end) = .;
414
415 #define KPROBES_TEXT                                                    \
416                 ALIGN_FUNCTION();                                       \
417                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
418                 *(.kprobes.text)                                        \
419                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
420
421 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
422 #define IRQENTRY_TEXT                                                   \
423                 ALIGN_FUNCTION();                                       \
424                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
425                 *(.irqentry.text)                                       \
426                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
427 #else
428 #define IRQENTRY_TEXT
429 #endif
430
431 /* Section used for early init (in .S files) */
432 #define HEAD_TEXT  *(.head.text)
433
434 #define HEAD_TEXT_SECTION                                                       \
435         .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {               \
436                 HEAD_TEXT                                               \
437         }
438
439 /*
440  * Exception table
441  */
442 #define EXCEPTION_TABLE(align)                                          \
443         . = ALIGN(align);                                               \
444         __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {               \
445                 VMLINUX_SYMBOL(__start___ex_table) = .;                 \
446                 *(__ex_table)                                           \
447                 VMLINUX_SYMBOL(__stop___ex_table) = .;                  \
448         }
449
450 /*
451  * Init task
452  */
453 #define INIT_TASK_DATA_SECTION(align)                                   \
454         . = ALIGN(align);                                               \
455         .data..init_task :  AT(ADDR(.data..init_task) - LOAD_OFFSET) {  \
456                 INIT_TASK_DATA(align)                                   \
457         }
458
459 #ifdef CONFIG_CONSTRUCTORS
460 #define KERNEL_CTORS()  . = ALIGN(8);                      \
461                         VMLINUX_SYMBOL(__ctors_start) = .; \
462                         *(.ctors)                          \
463                         VMLINUX_SYMBOL(__ctors_end) = .;
464 #else
465 #define KERNEL_CTORS()
466 #endif
467
468 /* init and exit section handling */
469 #define INIT_DATA                                                       \
470         *(.init.data)                                                   \
471         DEV_DISCARD(init.data)                                          \
472         CPU_DISCARD(init.data)                                          \
473         MEM_DISCARD(init.data)                                          \
474         KERNEL_CTORS()                                                  \
475         *(.init.rodata)                                                 \
476         MCOUNT_REC()                                                    \
477         DEV_DISCARD(init.rodata)                                        \
478         CPU_DISCARD(init.rodata)                                        \
479         MEM_DISCARD(init.rodata)                                        \
480         KERNEL_DTB()
481
482 #define INIT_TEXT                                                       \
483         *(.init.text)                                                   \
484         DEV_DISCARD(init.text)                                          \
485         CPU_DISCARD(init.text)                                          \
486         MEM_DISCARD(init.text)
487
488 #define EXIT_DATA                                                       \
489         *(.exit.data)                                                   \
490         DEV_DISCARD(exit.data)                                          \
491         DEV_DISCARD(exit.rodata)                                        \
492         CPU_DISCARD(exit.data)                                          \
493         CPU_DISCARD(exit.rodata)                                        \
494         MEM_DISCARD(exit.data)                                          \
495         MEM_DISCARD(exit.rodata)
496
497 #define EXIT_TEXT                                                       \
498         *(.exit.text)                                                   \
499         DEV_DISCARD(exit.text)                                          \
500         CPU_DISCARD(exit.text)                                          \
501         MEM_DISCARD(exit.text)
502
503 #define EXIT_CALL                                                       \
504         *(.exitcall.exit)
505
506 /*
507  * bss (Block Started by Symbol) - uninitialized data
508  * zeroed during startup
509  */
510 #define SBSS(sbss_align)                                                \
511         . = ALIGN(sbss_align);                                          \
512         .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {                         \
513                 *(.sbss)                                                \
514                 *(.scommon)                                             \
515         }
516
517 #define BSS(bss_align)                                                  \
518         . = ALIGN(bss_align);                                           \
519         .bss : AT(ADDR(.bss) - LOAD_OFFSET) {                           \
520                 *(.bss..page_aligned)                                   \
521                 *(.dynbss)                                              \
522                 *(.bss)                                                 \
523                 *(COMMON)                                               \
524         }
525
526 /*
527  * DWARF debug sections.
528  * Symbols in the DWARF debugging sections are relative to
529  * the beginning of the section so we begin them at 0.
530  */
531 #define DWARF_DEBUG                                                     \
532                 /* DWARF 1 */                                           \
533                 .debug          0 : { *(.debug) }                       \
534                 .line           0 : { *(.line) }                        \
535                 /* GNU DWARF 1 extensions */                            \
536                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
537                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
538                 /* DWARF 1.1 and DWARF 2 */                             \
539                 .debug_aranges  0 : { *(.debug_aranges) }               \
540                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
541                 /* DWARF 2 */                                           \
542                 .debug_info     0 : { *(.debug_info                     \
543                                 .gnu.linkonce.wi.*) }                   \
544                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
545                 .debug_line     0 : { *(.debug_line) }                  \
546                 .debug_frame    0 : { *(.debug_frame) }                 \
547                 .debug_str      0 : { *(.debug_str) }                   \
548                 .debug_loc      0 : { *(.debug_loc) }                   \
549                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
550                 /* SGI/MIPS DWARF 2 extensions */                       \
551                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
552                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
553                 .debug_typenames 0 : { *(.debug_typenames) }            \
554                 .debug_varnames  0 : { *(.debug_varnames) }             \
555
556                 /* Stabs debugging sections.  */
557 #define STABS_DEBUG                                                     \
558                 .stab 0 : { *(.stab) }                                  \
559                 .stabstr 0 : { *(.stabstr) }                            \
560                 .stab.excl 0 : { *(.stab.excl) }                        \
561                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
562                 .stab.index 0 : { *(.stab.index) }                      \
563                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
564                 .comment 0 : { *(.comment) }
565
566 #ifdef CONFIG_GENERIC_BUG
567 #define BUG_TABLE                                                       \
568         . = ALIGN(8);                                                   \
569         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
570                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
571                 *(__bug_table)                                          \
572                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
573         }
574 #else
575 #define BUG_TABLE
576 #endif
577
578 #define JUMP_TABLE                                                      \
579         . = ALIGN(8);                                                   \
580         __jump_table : AT(ADDR(__jump_table) - LOAD_OFFSET) {           \
581                 VMLINUX_SYMBOL(__start___jump_table) = .;               \
582                 *(__jump_table)                                         \
583                 VMLINUX_SYMBOL(__stop___jump_table) = .;                \
584         }
585
586 #ifdef CONFIG_PM_TRACE
587 #define TRACEDATA                                                       \
588         . = ALIGN(4);                                                   \
589         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
590                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
591                 *(.tracedata)                                           \
592                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
593         }
594 #else
595 #define TRACEDATA
596 #endif
597
598 #define NOTES                                                           \
599         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
600                 VMLINUX_SYMBOL(__start_notes) = .;                      \
601                 *(.note.*)                                              \
602                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
603         }
604
605 #define INIT_SETUP(initsetup_align)                                     \
606                 . = ALIGN(initsetup_align);                             \
607                 VMLINUX_SYMBOL(__setup_start) = .;                      \
608                 *(.init.setup)                                          \
609                 VMLINUX_SYMBOL(__setup_end) = .;
610
611 #define INITCALLS                                                       \
612         *(.initcallearly.init)                                          \
613         VMLINUX_SYMBOL(__early_initcall_end) = .;                       \
614         *(.initcall0.init)                                              \
615         *(.initcall0s.init)                                             \
616         *(.initcall1.init)                                              \
617         *(.initcall1s.init)                                             \
618         *(.initcall2.init)                                              \
619         *(.initcall2s.init)                                             \
620         *(.initcall3.init)                                              \
621         *(.initcall3s.init)                                             \
622         *(.initcall4.init)                                              \
623         *(.initcall4s.init)                                             \
624         *(.initcall5.init)                                              \
625         *(.initcall5s.init)                                             \
626         *(.initcallrootfs.init)                                         \
627         *(.initcall6.init)                                              \
628         *(.initcall6s.init)                                             \
629         *(.initcall7.init)                                              \
630         *(.initcall7s.init)
631
632 #define INIT_CALLS                                                      \
633                 VMLINUX_SYMBOL(__initcall_start) = .;                   \
634                 INITCALLS                                               \
635                 VMLINUX_SYMBOL(__initcall_end) = .;
636
637 #define CON_INITCALL                                                    \
638                 VMLINUX_SYMBOL(__con_initcall_start) = .;               \
639                 *(.con_initcall.init)                                   \
640                 VMLINUX_SYMBOL(__con_initcall_end) = .;
641
642 #define SECURITY_INITCALL                                               \
643                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
644                 *(.security_initcall.init)                              \
645                 VMLINUX_SYMBOL(__security_initcall_end) = .;
646
647 #ifdef CONFIG_BLK_DEV_INITRD
648 #define INIT_RAM_FS                                                     \
649         . = ALIGN(4);                                                   \
650         VMLINUX_SYMBOL(__initramfs_start) = .;                          \
651         *(.init.ramfs)                                                  \
652         . = ALIGN(8);                                                   \
653         *(.init.ramfs.info)
654 #else
655 #define INIT_RAM_FS
656 #endif
657
658 /*
659  * Default discarded sections.
660  *
661  * Some archs want to discard exit text/data at runtime rather than
662  * link time due to cross-section references such as alt instructions,
663  * bug table, eh_frame, etc.  DISCARDS must be the last of output
664  * section definitions so that such archs put those in earlier section
665  * definitions.
666  */
667 #define DISCARDS                                                        \
668         /DISCARD/ : {                                                   \
669         EXIT_TEXT                                                       \
670         EXIT_DATA                                                       \
671         EXIT_CALL                                                       \
672         *(.discard)                                                     \
673         *(.discard.*)                                                   \
674         }
675
676 /**
677  * PERCPU_VADDR - define output section for percpu area
678  * @vaddr: explicit base address (optional)
679  * @phdr: destination PHDR (optional)
680  *
681  * Macro which expands to output section for percpu area.  If @vaddr
682  * is not blank, it specifies explicit base address and all percpu
683  * symbols will be offset from the given address.  If blank, @vaddr
684  * always equals @laddr + LOAD_OFFSET.
685  *
686  * @phdr defines the output PHDR to use if not blank.  Be warned that
687  * output PHDR is sticky.  If @phdr is specified, the next output
688  * section in the linker script will go there too.  @phdr should have
689  * a leading colon.
690  *
691  * Note that this macros defines __per_cpu_load as an absolute symbol.
692  * If there is no need to put the percpu section at a predetermined
693  * address, use PERCPU().
694  */
695 #define PERCPU_VADDR(vaddr, phdr)                                       \
696         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
697         .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
698                                 - LOAD_OFFSET) {                        \
699                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
700                 *(.data..percpu..first)                                 \
701                 . = ALIGN(PAGE_SIZE);                                   \
702                 *(.data..percpu..page_aligned)                          \
703                 *(.data..percpu..readmostly)                            \
704                 *(.data..percpu)                                        \
705                 *(.data..percpu..shared_aligned)                        \
706                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
707         } phdr                                                          \
708         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
709
710 /**
711  * PERCPU - define output section for percpu area, simple version
712  * @align: required alignment
713  *
714  * Align to @align and outputs output section for percpu area.  This
715  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
716  * __per_cpu_start will be identical.
717  *
718  * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
719  * that __per_cpu_load is defined as a relative symbol against
720  * .data..percpu which is required for relocatable x86_32
721  * configuration.
722  */
723 #define PERCPU(align)                                                   \
724         . = ALIGN(align);                                               \
725         .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
726                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
727                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
728                 *(.data..percpu..first)                                 \
729                 . = ALIGN(PAGE_SIZE);                                   \
730                 *(.data..percpu..page_aligned)                          \
731                 *(.data..percpu..readmostly)                            \
732                 *(.data..percpu)                                        \
733                 *(.data..percpu..shared_aligned)                        \
734                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
735         }
736
737
738 /*
739  * Definition of the high level *_SECTION macros
740  * They will fit only a subset of the architectures
741  */
742
743
744 /*
745  * Writeable data.
746  * All sections are combined in a single .data section.
747  * The sections following CONSTRUCTORS are arranged so their
748  * typical alignment matches.
749  * A cacheline is typical/always less than a PAGE_SIZE so
750  * the sections that has this restriction (or similar)
751  * is located before the ones requiring PAGE_SIZE alignment.
752  * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
753  * matches the requirment of PAGE_ALIGNED_DATA.
754  *
755  * use 0 as page_align if page_aligned data is not used */
756 #define RW_DATA_SECTION(cacheline, pagealigned, inittask)               \
757         . = ALIGN(PAGE_SIZE);                                           \
758         .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
759                 INIT_TASK_DATA(inittask)                                \
760                 NOSAVE_DATA                                             \
761                 PAGE_ALIGNED_DATA(pagealigned)                          \
762                 CACHELINE_ALIGNED_DATA(cacheline)                       \
763                 READ_MOSTLY_DATA(cacheline)                             \
764                 DATA_DATA                                               \
765                 CONSTRUCTORS                                            \
766         }
767
768 #define INIT_TEXT_SECTION(inittext_align)                               \
769         . = ALIGN(inittext_align);                                      \
770         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
771                 VMLINUX_SYMBOL(_sinittext) = .;                         \
772                 INIT_TEXT                                               \
773                 VMLINUX_SYMBOL(_einittext) = .;                         \
774         }
775
776 #define INIT_DATA_SECTION(initsetup_align)                              \
777         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {               \
778                 INIT_DATA                                               \
779                 INIT_SETUP(initsetup_align)                             \
780                 INIT_CALLS                                              \
781                 CON_INITCALL                                            \
782                 SECURITY_INITCALL                                       \
783                 INIT_RAM_FS                                             \
784         }
785
786 #define BSS_SECTION(sbss_align, bss_align, stop_align)                  \
787         . = ALIGN(sbss_align);                                          \
788         VMLINUX_SYMBOL(__bss_start) = .;                                \
789         SBSS(sbss_align)                                                \
790         BSS(bss_align)                                                  \
791         . = ALIGN(stop_align);                                          \
792         VMLINUX_SYMBOL(__bss_stop) = .;