vmlinux.lds.h: lower init ramfs alignment to 4
[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_ALIGN() . = ALIGN(32)
71
72 /* The actual configuration determine if the init/exit sections
73  * are handled as text/data or they can be discarded (which
74  * often happens at runtime)
75  */
76 #ifdef CONFIG_HOTPLUG
77 #define DEV_KEEP(sec)    *(.dev##sec)
78 #define DEV_DISCARD(sec)
79 #else
80 #define DEV_KEEP(sec)
81 #define DEV_DISCARD(sec) *(.dev##sec)
82 #endif
83
84 #ifdef CONFIG_HOTPLUG_CPU
85 #define CPU_KEEP(sec)    *(.cpu##sec)
86 #define CPU_DISCARD(sec)
87 #else
88 #define CPU_KEEP(sec)
89 #define CPU_DISCARD(sec) *(.cpu##sec)
90 #endif
91
92 #if defined(CONFIG_MEMORY_HOTPLUG)
93 #define MEM_KEEP(sec)    *(.mem##sec)
94 #define MEM_DISCARD(sec)
95 #else
96 #define MEM_KEEP(sec)
97 #define MEM_DISCARD(sec) *(.mem##sec)
98 #endif
99
100 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
101 #define MCOUNT_REC()    . = ALIGN(8);                           \
102                         VMLINUX_SYMBOL(__start_mcount_loc) = .; \
103                         *(__mcount_loc)                         \
104                         VMLINUX_SYMBOL(__stop_mcount_loc) = .;
105 #else
106 #define MCOUNT_REC()
107 #endif
108
109 #ifdef CONFIG_TRACE_BRANCH_PROFILING
110 #define LIKELY_PROFILE()        VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
111                                 *(_ftrace_annotated_branch)                           \
112                                 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
113 #else
114 #define LIKELY_PROFILE()
115 #endif
116
117 #ifdef CONFIG_PROFILE_ALL_BRANCHES
118 #define BRANCH_PROFILE()        VMLINUX_SYMBOL(__start_branch_profile) = .;   \
119                                 *(_ftrace_branch)                             \
120                                 VMLINUX_SYMBOL(__stop_branch_profile) = .;
121 #else
122 #define BRANCH_PROFILE()
123 #endif
124
125 #ifdef CONFIG_EVENT_TRACING
126 #define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
127                         *(_ftrace_events)                               \
128                         VMLINUX_SYMBOL(__stop_ftrace_events) = .;
129 #else
130 #define FTRACE_EVENTS()
131 #endif
132
133 #ifdef CONFIG_TRACING
134 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
135                          *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
136                          VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
137 #else
138 #define TRACE_PRINTKS()
139 #endif
140
141 #ifdef CONFIG_FTRACE_SYSCALLS
142 #define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
143                          *(__syscalls_metadata)                         \
144                          VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
145 #else
146 #define TRACE_SYSCALLS()
147 #endif
148
149 /* .data section */
150 #define DATA_DATA                                                       \
151         *(.data)                                                        \
152         *(.ref.data)                                                    \
153         *(.data..shared_aligned) /* percpu related */                   \
154         DEV_KEEP(init.data)                                             \
155         DEV_KEEP(exit.data)                                             \
156         CPU_KEEP(init.data)                                             \
157         CPU_KEEP(exit.data)                                             \
158         MEM_KEEP(init.data)                                             \
159         MEM_KEEP(exit.data)                                             \
160         . = ALIGN(32);                                                  \
161         VMLINUX_SYMBOL(__start___tracepoints) = .;                      \
162         *(__tracepoints)                                                \
163         VMLINUX_SYMBOL(__stop___tracepoints) = .;                       \
164         /* implement dynamic printk debug */                            \
165         . = ALIGN(8);                                                   \
166         VMLINUX_SYMBOL(__start___verbose) = .;                          \
167         *(__verbose)                                                    \
168         VMLINUX_SYMBOL(__stop___verbose) = .;                           \
169         LIKELY_PROFILE()                                                \
170         BRANCH_PROFILE()                                                \
171         TRACE_PRINTKS()                                                 \
172                                                                         \
173         STRUCT_ALIGN();                                                 \
174         FTRACE_EVENTS()                                                 \
175                                                                         \
176         STRUCT_ALIGN();                                                 \
177         TRACE_SYSCALLS()
178
179 /*
180  * Data section helpers
181  */
182 #define NOSAVE_DATA                                                     \
183         . = ALIGN(PAGE_SIZE);                                           \
184         VMLINUX_SYMBOL(__nosave_begin) = .;                             \
185         *(.data..nosave)                                                \
186         . = ALIGN(PAGE_SIZE);                                           \
187         VMLINUX_SYMBOL(__nosave_end) = .;
188
189 #define PAGE_ALIGNED_DATA(page_align)                                   \
190         . = ALIGN(page_align);                                          \
191         *(.data..page_aligned)
192
193 #define READ_MOSTLY_DATA(align)                                         \
194         . = ALIGN(align);                                               \
195         *(.data..read_mostly)
196
197 #define CACHELINE_ALIGNED_DATA(align)                                   \
198         . = ALIGN(align);                                               \
199         *(.data..cacheline_aligned)
200
201 #define INIT_TASK_DATA(align)                                           \
202         . = ALIGN(align);                                               \
203         *(.data..init_task)
204
205 /*
206  * Read only Data
207  */
208 #define RO_DATA_SECTION(align)                                          \
209         . = ALIGN((align));                                             \
210         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
211                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
212                 *(.rodata) *(.rodata.*)                                 \
213                 *(__vermagic)           /* Kernel version magic */      \
214                 *(__markers_strings)    /* Markers: strings */          \
215                 *(__tracepoints_strings)/* Tracepoints: strings */      \
216         }                                                               \
217                                                                         \
218         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
219                 *(.rodata1)                                             \
220         }                                                               \
221                                                                         \
222         BUG_TABLE                                                       \
223                                                                         \
224         JUMP_TABLE                                                      \
225                                                                         \
226         /* PCI quirks */                                                \
227         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
228                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
229                 *(.pci_fixup_early)                                     \
230                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
231                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
232                 *(.pci_fixup_header)                                    \
233                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
234                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
235                 *(.pci_fixup_final)                                     \
236                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
237                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
238                 *(.pci_fixup_enable)                                    \
239                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
240                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
241                 *(.pci_fixup_resume)                                    \
242                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
243                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
244                 *(.pci_fixup_resume_early)                              \
245                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
246                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
247                 *(.pci_fixup_suspend)                                   \
248                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
249         }                                                               \
250                                                                         \
251         /* Built-in firmware blobs */                                   \
252         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
253                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
254                 *(.builtin_fw)                                          \
255                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
256         }                                                               \
257                                                                         \
258         /* RapidIO route ops */                                         \
259         .rio_ops        : AT(ADDR(.rio_ops) - LOAD_OFFSET) {            \
260                 VMLINUX_SYMBOL(__start_rio_switch_ops) = .;             \
261                 *(.rio_switch_ops)                                      \
262                 VMLINUX_SYMBOL(__end_rio_switch_ops) = .;               \
263         }                                                               \
264                                                                         \
265         TRACEDATA                                                       \
266                                                                         \
267         /* Kernel symbol table: Normal symbols */                       \
268         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
269                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
270                 *(__ksymtab)                                            \
271                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
272         }                                                               \
273                                                                         \
274         /* Kernel symbol table: GPL-only symbols */                     \
275         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
276                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
277                 *(__ksymtab_gpl)                                        \
278                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
279         }                                                               \
280                                                                         \
281         /* Kernel symbol table: Normal unused symbols */                \
282         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
283                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
284                 *(__ksymtab_unused)                                     \
285                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
286         }                                                               \
287                                                                         \
288         /* Kernel symbol table: GPL-only unused symbols */              \
289         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
290                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
291                 *(__ksymtab_unused_gpl)                                 \
292                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
293         }                                                               \
294                                                                         \
295         /* Kernel symbol table: GPL-future-only symbols */              \
296         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
297                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
298                 *(__ksymtab_gpl_future)                                 \
299                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
300         }                                                               \
301                                                                         \
302         /* Kernel symbol table: Normal symbols */                       \
303         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
304                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
305                 *(__kcrctab)                                            \
306                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
307         }                                                               \
308                                                                         \
309         /* Kernel symbol table: GPL-only symbols */                     \
310         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
311                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
312                 *(__kcrctab_gpl)                                        \
313                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
314         }                                                               \
315                                                                         \
316         /* Kernel symbol table: Normal unused symbols */                \
317         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
318                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
319                 *(__kcrctab_unused)                                     \
320                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
321         }                                                               \
322                                                                         \
323         /* Kernel symbol table: GPL-only unused symbols */              \
324         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
325                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
326                 *(__kcrctab_unused_gpl)                                 \
327                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
328         }                                                               \
329                                                                         \
330         /* Kernel symbol table: GPL-future-only symbols */              \
331         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
332                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
333                 *(__kcrctab_gpl_future)                                 \
334                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
335         }                                                               \
336                                                                         \
337         /* Kernel symbol table: strings */                              \
338         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
339                 *(__ksymtab_strings)                                    \
340         }                                                               \
341                                                                         \
342         /* __*init sections */                                          \
343         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
344                 *(.ref.rodata)                                          \
345                 DEV_KEEP(init.rodata)                                   \
346                 DEV_KEEP(exit.rodata)                                   \
347                 CPU_KEEP(init.rodata)                                   \
348                 CPU_KEEP(exit.rodata)                                   \
349                 MEM_KEEP(init.rodata)                                   \
350                 MEM_KEEP(exit.rodata)                                   \
351         }                                                               \
352                                                                         \
353         /* Built-in module parameters. */                               \
354         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
355                 VMLINUX_SYMBOL(__start___param) = .;                    \
356                 *(__param)                                              \
357                 VMLINUX_SYMBOL(__stop___param) = .;                     \
358                 . = ALIGN((align));                                     \
359                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
360         }                                                               \
361         . = ALIGN((align));
362
363 /* RODATA & RO_DATA provided for backward compatibility.
364  * All archs are supposed to use RO_DATA() */
365 #define RODATA          RO_DATA_SECTION(4096)
366 #define RO_DATA(align)  RO_DATA_SECTION(align)
367
368 #define SECURITY_INIT                                                   \
369         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
370                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
371                 *(.security_initcall.init)                              \
372                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
373         }
374
375 /* .text section. Map to function alignment to avoid address changes
376  * during second ld run in second ld pass when generating System.map */
377 #define TEXT_TEXT                                                       \
378                 ALIGN_FUNCTION();                                       \
379                 *(.text.hot)                                            \
380                 *(.text)                                                \
381                 *(.ref.text)                                            \
382         DEV_KEEP(init.text)                                             \
383         DEV_KEEP(exit.text)                                             \
384         CPU_KEEP(init.text)                                             \
385         CPU_KEEP(exit.text)                                             \
386         MEM_KEEP(init.text)                                             \
387         MEM_KEEP(exit.text)                                             \
388                 *(.text.unlikely)
389
390
391 /* sched.text is aling to function alignment to secure we have same
392  * address even at second ld pass when generating System.map */
393 #define SCHED_TEXT                                                      \
394                 ALIGN_FUNCTION();                                       \
395                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
396                 *(.sched.text)                                          \
397                 VMLINUX_SYMBOL(__sched_text_end) = .;
398
399 /* spinlock.text is aling to function alignment to secure we have same
400  * address even at second ld pass when generating System.map */
401 #define LOCK_TEXT                                                       \
402                 ALIGN_FUNCTION();                                       \
403                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
404                 *(.spinlock.text)                                       \
405                 VMLINUX_SYMBOL(__lock_text_end) = .;
406
407 #define KPROBES_TEXT                                                    \
408                 ALIGN_FUNCTION();                                       \
409                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
410                 *(.kprobes.text)                                        \
411                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
412
413 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
414 #define IRQENTRY_TEXT                                                   \
415                 ALIGN_FUNCTION();                                       \
416                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
417                 *(.irqentry.text)                                       \
418                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
419 #else
420 #define IRQENTRY_TEXT
421 #endif
422
423 /* Section used for early init (in .S files) */
424 #define HEAD_TEXT  *(.head.text)
425
426 #define HEAD_TEXT_SECTION                                                       \
427         .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {               \
428                 HEAD_TEXT                                               \
429         }
430
431 /*
432  * Exception table
433  */
434 #define EXCEPTION_TABLE(align)                                          \
435         . = ALIGN(align);                                               \
436         __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {               \
437                 VMLINUX_SYMBOL(__start___ex_table) = .;                 \
438                 *(__ex_table)                                           \
439                 VMLINUX_SYMBOL(__stop___ex_table) = .;                  \
440         }
441
442 /*
443  * Init task
444  */
445 #define INIT_TASK_DATA_SECTION(align)                                   \
446         . = ALIGN(align);                                               \
447         .data..init_task :  AT(ADDR(.data..init_task) - LOAD_OFFSET) {  \
448                 INIT_TASK_DATA(align)                                   \
449         }
450
451 #ifdef CONFIG_CONSTRUCTORS
452 #define KERNEL_CTORS()  . = ALIGN(8);                      \
453                         VMLINUX_SYMBOL(__ctors_start) = .; \
454                         *(.ctors)                          \
455                         VMLINUX_SYMBOL(__ctors_end) = .;
456 #else
457 #define KERNEL_CTORS()
458 #endif
459
460 /* init and exit section handling */
461 #define INIT_DATA                                                       \
462         *(.init.data)                                                   \
463         DEV_DISCARD(init.data)                                          \
464         CPU_DISCARD(init.data)                                          \
465         MEM_DISCARD(init.data)                                          \
466         KERNEL_CTORS()                                                  \
467         *(.init.rodata)                                                 \
468         MCOUNT_REC()                                                    \
469         DEV_DISCARD(init.rodata)                                        \
470         CPU_DISCARD(init.rodata)                                        \
471         MEM_DISCARD(init.rodata)
472
473 #define INIT_TEXT                                                       \
474         *(.init.text)                                                   \
475         DEV_DISCARD(init.text)                                          \
476         CPU_DISCARD(init.text)                                          \
477         MEM_DISCARD(init.text)
478
479 #define EXIT_DATA                                                       \
480         *(.exit.data)                                                   \
481         DEV_DISCARD(exit.data)                                          \
482         DEV_DISCARD(exit.rodata)                                        \
483         CPU_DISCARD(exit.data)                                          \
484         CPU_DISCARD(exit.rodata)                                        \
485         MEM_DISCARD(exit.data)                                          \
486         MEM_DISCARD(exit.rodata)
487
488 #define EXIT_TEXT                                                       \
489         *(.exit.text)                                                   \
490         DEV_DISCARD(exit.text)                                          \
491         CPU_DISCARD(exit.text)                                          \
492         MEM_DISCARD(exit.text)
493
494 #define EXIT_CALL                                                       \
495         *(.exitcall.exit)
496
497 /*
498  * bss (Block Started by Symbol) - uninitialized data
499  * zeroed during startup
500  */
501 #define SBSS(sbss_align)                                                \
502         . = ALIGN(sbss_align);                                          \
503         .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {                         \
504                 *(.sbss)                                                \
505                 *(.scommon)                                             \
506         }
507
508 #define BSS(bss_align)                                                  \
509         . = ALIGN(bss_align);                                           \
510         .bss : AT(ADDR(.bss) - LOAD_OFFSET) {                           \
511                 *(.bss..page_aligned)                                   \
512                 *(.dynbss)                                              \
513                 *(.bss)                                                 \
514                 *(COMMON)                                               \
515         }
516
517 /*
518  * DWARF debug sections.
519  * Symbols in the DWARF debugging sections are relative to
520  * the beginning of the section so we begin them at 0.
521  */
522 #define DWARF_DEBUG                                                     \
523                 /* DWARF 1 */                                           \
524                 .debug          0 : { *(.debug) }                       \
525                 .line           0 : { *(.line) }                        \
526                 /* GNU DWARF 1 extensions */                            \
527                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
528                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
529                 /* DWARF 1.1 and DWARF 2 */                             \
530                 .debug_aranges  0 : { *(.debug_aranges) }               \
531                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
532                 /* DWARF 2 */                                           \
533                 .debug_info     0 : { *(.debug_info                     \
534                                 .gnu.linkonce.wi.*) }                   \
535                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
536                 .debug_line     0 : { *(.debug_line) }                  \
537                 .debug_frame    0 : { *(.debug_frame) }                 \
538                 .debug_str      0 : { *(.debug_str) }                   \
539                 .debug_loc      0 : { *(.debug_loc) }                   \
540                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
541                 /* SGI/MIPS DWARF 2 extensions */                       \
542                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
543                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
544                 .debug_typenames 0 : { *(.debug_typenames) }            \
545                 .debug_varnames  0 : { *(.debug_varnames) }             \
546
547                 /* Stabs debugging sections.  */
548 #define STABS_DEBUG                                                     \
549                 .stab 0 : { *(.stab) }                                  \
550                 .stabstr 0 : { *(.stabstr) }                            \
551                 .stab.excl 0 : { *(.stab.excl) }                        \
552                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
553                 .stab.index 0 : { *(.stab.index) }                      \
554                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
555                 .comment 0 : { *(.comment) }
556
557 #ifdef CONFIG_GENERIC_BUG
558 #define BUG_TABLE                                                       \
559         . = ALIGN(8);                                                   \
560         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
561                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
562                 *(__bug_table)                                          \
563                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
564         }
565 #else
566 #define BUG_TABLE
567 #endif
568
569 #define JUMP_TABLE                                                      \
570         . = ALIGN(8);                                                   \
571         __jump_table : AT(ADDR(__jump_table) - LOAD_OFFSET) {           \
572                 VMLINUX_SYMBOL(__start___jump_table) = .;               \
573                 *(__jump_table)                                         \
574                 VMLINUX_SYMBOL(__stop___jump_table) = .;                \
575         }
576
577 #ifdef CONFIG_PM_TRACE
578 #define TRACEDATA                                                       \
579         . = ALIGN(4);                                                   \
580         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
581                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
582                 *(.tracedata)                                           \
583                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
584         }
585 #else
586 #define TRACEDATA
587 #endif
588
589 #define NOTES                                                           \
590         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
591                 VMLINUX_SYMBOL(__start_notes) = .;                      \
592                 *(.note.*)                                              \
593                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
594         }
595
596 #define INIT_SETUP(initsetup_align)                                     \
597                 . = ALIGN(initsetup_align);                             \
598                 VMLINUX_SYMBOL(__setup_start) = .;                      \
599                 *(.init.setup)                                          \
600                 VMLINUX_SYMBOL(__setup_end) = .;
601
602 #define INITCALLS                                                       \
603         *(.initcallearly.init)                                          \
604         VMLINUX_SYMBOL(__early_initcall_end) = .;                       \
605         *(.initcall0.init)                                              \
606         *(.initcall0s.init)                                             \
607         *(.initcall1.init)                                              \
608         *(.initcall1s.init)                                             \
609         *(.initcall2.init)                                              \
610         *(.initcall2s.init)                                             \
611         *(.initcall3.init)                                              \
612         *(.initcall3s.init)                                             \
613         *(.initcall4.init)                                              \
614         *(.initcall4s.init)                                             \
615         *(.initcall5.init)                                              \
616         *(.initcall5s.init)                                             \
617         *(.initcallrootfs.init)                                         \
618         *(.initcall6.init)                                              \
619         *(.initcall6s.init)                                             \
620         *(.initcall7.init)                                              \
621         *(.initcall7s.init)
622
623 #define INIT_CALLS                                                      \
624                 VMLINUX_SYMBOL(__initcall_start) = .;                   \
625                 INITCALLS                                               \
626                 VMLINUX_SYMBOL(__initcall_end) = .;
627
628 #define CON_INITCALL                                                    \
629                 VMLINUX_SYMBOL(__con_initcall_start) = .;               \
630                 *(.con_initcall.init)                                   \
631                 VMLINUX_SYMBOL(__con_initcall_end) = .;
632
633 #define SECURITY_INITCALL                                               \
634                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
635                 *(.security_initcall.init)                              \
636                 VMLINUX_SYMBOL(__security_initcall_end) = .;
637
638 #ifdef CONFIG_BLK_DEV_INITRD
639 #define INIT_RAM_FS                                                     \
640         . = ALIGN(4);                                                   \
641         VMLINUX_SYMBOL(__initramfs_start) = .;                          \
642         *(.init.ramfs)                                                  \
643         VMLINUX_SYMBOL(__initramfs_end) = .;
644 #else
645 #define INIT_RAM_FS
646 #endif
647
648 /*
649  * Default discarded sections.
650  *
651  * Some archs want to discard exit text/data at runtime rather than
652  * link time due to cross-section references such as alt instructions,
653  * bug table, eh_frame, etc.  DISCARDS must be the last of output
654  * section definitions so that such archs put those in earlier section
655  * definitions.
656  */
657 #define DISCARDS                                                        \
658         /DISCARD/ : {                                                   \
659         EXIT_TEXT                                                       \
660         EXIT_DATA                                                       \
661         EXIT_CALL                                                       \
662         *(.discard)                                                     \
663         *(.discard.*)                                                   \
664         }
665
666 /**
667  * PERCPU_VADDR - define output section for percpu area
668  * @vaddr: explicit base address (optional)
669  * @phdr: destination PHDR (optional)
670  *
671  * Macro which expands to output section for percpu area.  If @vaddr
672  * is not blank, it specifies explicit base address and all percpu
673  * symbols will be offset from the given address.  If blank, @vaddr
674  * always equals @laddr + LOAD_OFFSET.
675  *
676  * @phdr defines the output PHDR to use if not blank.  Be warned that
677  * output PHDR is sticky.  If @phdr is specified, the next output
678  * section in the linker script will go there too.  @phdr should have
679  * a leading colon.
680  *
681  * Note that this macros defines __per_cpu_load as an absolute symbol.
682  * If there is no need to put the percpu section at a predetermined
683  * address, use PERCPU().
684  */
685 #define PERCPU_VADDR(vaddr, phdr)                                       \
686         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
687         .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
688                                 - LOAD_OFFSET) {                        \
689                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
690                 *(.data..percpu..first)                                 \
691                 . = ALIGN(PAGE_SIZE);                                   \
692                 *(.data..percpu..page_aligned)                          \
693                 *(.data..percpu..readmostly)                            \
694                 *(.data..percpu)                                        \
695                 *(.data..percpu..shared_aligned)                        \
696                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
697         } phdr                                                          \
698         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
699
700 /**
701  * PERCPU - define output section for percpu area, simple version
702  * @align: required alignment
703  *
704  * Align to @align and outputs output section for percpu area.  This
705  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
706  * __per_cpu_start will be identical.
707  *
708  * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
709  * that __per_cpu_load is defined as a relative symbol against
710  * .data..percpu which is required for relocatable x86_32
711  * configuration.
712  */
713 #define PERCPU(align)                                                   \
714         . = ALIGN(align);                                               \
715         .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
716                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
717                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
718                 *(.data..percpu..first)                                 \
719                 . = ALIGN(PAGE_SIZE);                                   \
720                 *(.data..percpu..page_aligned)                          \
721                 *(.data..percpu..readmostly)                            \
722                 *(.data..percpu)                                        \
723                 *(.data..percpu..shared_aligned)                        \
724                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
725         }
726
727
728 /*
729  * Definition of the high level *_SECTION macros
730  * They will fit only a subset of the architectures
731  */
732
733
734 /*
735  * Writeable data.
736  * All sections are combined in a single .data section.
737  * The sections following CONSTRUCTORS are arranged so their
738  * typical alignment matches.
739  * A cacheline is typical/always less than a PAGE_SIZE so
740  * the sections that has this restriction (or similar)
741  * is located before the ones requiring PAGE_SIZE alignment.
742  * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
743  * matches the requirment of PAGE_ALIGNED_DATA.
744  *
745  * use 0 as page_align if page_aligned data is not used */
746 #define RW_DATA_SECTION(cacheline, pagealigned, inittask)               \
747         . = ALIGN(PAGE_SIZE);                                           \
748         .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
749                 INIT_TASK_DATA(inittask)                                \
750                 NOSAVE_DATA                                             \
751                 PAGE_ALIGNED_DATA(pagealigned)                          \
752                 CACHELINE_ALIGNED_DATA(cacheline)                       \
753                 READ_MOSTLY_DATA(cacheline)                             \
754                 DATA_DATA                                               \
755                 CONSTRUCTORS                                            \
756         }
757
758 #define INIT_TEXT_SECTION(inittext_align)                               \
759         . = ALIGN(inittext_align);                                      \
760         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
761                 VMLINUX_SYMBOL(_sinittext) = .;                         \
762                 INIT_TEXT                                               \
763                 VMLINUX_SYMBOL(_einittext) = .;                         \
764         }
765
766 #define INIT_DATA_SECTION(initsetup_align)                              \
767         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {               \
768                 INIT_DATA                                               \
769                 INIT_SETUP(initsetup_align)                             \
770                 INIT_CALLS                                              \
771                 CON_INITCALL                                            \
772                 SECURITY_INITCALL                                       \
773                 INIT_RAM_FS                                             \
774         }
775
776 #define BSS_SECTION(sbss_align, bss_align, stop_align)                  \
777         . = ALIGN(sbss_align);                                          \
778         VMLINUX_SYMBOL(__bss_start) = .;                                \
779         SBSS(sbss_align)                                                \
780         BSS(bss_align)                                                  \
781         . = ALIGN(stop_align);                                          \
782         VMLINUX_SYMBOL(__bss_stop) = .;