c5c18ac878ab74d7f4fa5365cbddfa1e3f9bf3e4
[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_start = .;
34  *      BSS_SECTION(0, 0)
35  *      __bss_stop = .;
36  *      _end = .;
37  *
38  *      /DISCARD/ : {
39  *              EXIT_TEXT
40  *              EXIT_DATA
41  *              EXIT_CALL
42  *      }
43  *      STABS_DEBUG
44  *      DWARF_DEBUG
45  * }
46  *
47  * [__init_begin, __init_end] is the init section that may be freed after init
48  * [_stext, _etext] is the text section
49  * [_sdata, _edata] is the data section
50  *
51  * Some of the included output section have their own set of constants.
52  * Examples are: [__initramfs_start, __initramfs_end] for initramfs and
53  *               [__nosave_begin, __nosave_end] for the nosave data
54  */
55
56 #ifndef LOAD_OFFSET
57 #define LOAD_OFFSET 0
58 #endif
59
60 #ifndef VMLINUX_SYMBOL
61 #define VMLINUX_SYMBOL(_sym_) _sym_
62 #endif
63
64 /* Align . to a 8 byte boundary equals to maximum function alignment. */
65 #define ALIGN_FUNCTION()  . = ALIGN(8)
66
67 /* The actual configuration determine if the init/exit sections
68  * are handled as text/data or they can be discarded (which
69  * often happens at runtime)
70  */
71 #ifdef CONFIG_HOTPLUG
72 #define DEV_KEEP(sec)    *(.dev##sec)
73 #define DEV_DISCARD(sec)
74 #else
75 #define DEV_KEEP(sec)
76 #define DEV_DISCARD(sec) *(.dev##sec)
77 #endif
78
79 #ifdef CONFIG_HOTPLUG_CPU
80 #define CPU_KEEP(sec)    *(.cpu##sec)
81 #define CPU_DISCARD(sec)
82 #else
83 #define CPU_KEEP(sec)
84 #define CPU_DISCARD(sec) *(.cpu##sec)
85 #endif
86
87 #if defined(CONFIG_MEMORY_HOTPLUG)
88 #define MEM_KEEP(sec)    *(.mem##sec)
89 #define MEM_DISCARD(sec)
90 #else
91 #define MEM_KEEP(sec)
92 #define MEM_DISCARD(sec) *(.mem##sec)
93 #endif
94
95 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
96 #define MCOUNT_REC()    VMLINUX_SYMBOL(__start_mcount_loc) = .; \
97                         *(__mcount_loc)                         \
98                         VMLINUX_SYMBOL(__stop_mcount_loc) = .;
99 #else
100 #define MCOUNT_REC()
101 #endif
102
103 #ifdef CONFIG_TRACE_BRANCH_PROFILING
104 #define LIKELY_PROFILE()        VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
105                                 *(_ftrace_annotated_branch)                           \
106                                 VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
107 #else
108 #define LIKELY_PROFILE()
109 #endif
110
111 #ifdef CONFIG_PROFILE_ALL_BRANCHES
112 #define BRANCH_PROFILE()        VMLINUX_SYMBOL(__start_branch_profile) = .;   \
113                                 *(_ftrace_branch)                             \
114                                 VMLINUX_SYMBOL(__stop_branch_profile) = .;
115 #else
116 #define BRANCH_PROFILE()
117 #endif
118
119 #ifdef CONFIG_EVENT_TRACING
120 #define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
121                         *(_ftrace_events)                               \
122                         VMLINUX_SYMBOL(__stop_ftrace_events) = .;
123 #else
124 #define FTRACE_EVENTS()
125 #endif
126
127 #ifdef CONFIG_TRACING
128 #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
129                          *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
130                          VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
131 #else
132 #define TRACE_PRINTKS()
133 #endif
134
135 #ifdef CONFIG_FTRACE_SYSCALLS
136 #define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
137                          *(__syscalls_metadata)                         \
138                          VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
139 #else
140 #define TRACE_SYSCALLS()
141 #endif
142
143 /* .data section */
144 #define DATA_DATA                                                       \
145         *(.data)                                                        \
146         *(.ref.data)                                                    \
147         DEV_KEEP(init.data)                                             \
148         DEV_KEEP(exit.data)                                             \
149         CPU_KEEP(init.data)                                             \
150         CPU_KEEP(exit.data)                                             \
151         MEM_KEEP(init.data)                                             \
152         MEM_KEEP(exit.data)                                             \
153         . = ALIGN(8);                                                   \
154         VMLINUX_SYMBOL(__start___markers) = .;                          \
155         *(__markers)                                                    \
156         VMLINUX_SYMBOL(__stop___markers) = .;                           \
157         . = ALIGN(32);                                                  \
158         VMLINUX_SYMBOL(__start___tracepoints) = .;                      \
159         *(__tracepoints)                                                \
160         VMLINUX_SYMBOL(__stop___tracepoints) = .;                       \
161         /* implement dynamic printk debug */                            \
162         . = ALIGN(8);                                                   \
163         VMLINUX_SYMBOL(__start___verbose) = .;                          \
164         *(__verbose)                                                    \
165         VMLINUX_SYMBOL(__stop___verbose) = .;                           \
166         LIKELY_PROFILE()                                                \
167         BRANCH_PROFILE()                                                \
168         TRACE_PRINTKS()                                                 \
169         FTRACE_EVENTS()                                                 \
170         TRACE_SYSCALLS()
171
172 /*
173  * Data section helpers
174  */
175 #define NOSAVE_DATA                                                     \
176         . = ALIGN(PAGE_SIZE);                                           \
177         VMLINUX_SYMBOL(__nosave_begin) = .;                             \
178         *(.data.nosave)                                                 \
179         . = ALIGN(PAGE_SIZE);                                           \
180         VMLINUX_SYMBOL(__nosave_end) = .;
181
182 #define PAGE_ALIGNED_DATA(page_align)                                   \
183         . = ALIGN(page_align);                                          \
184         *(.data.page_aligned)
185
186 #define READ_MOSTLY_DATA(align)                                         \
187         . = ALIGN(align);                                               \
188         *(.data.read_mostly)
189
190 #define CACHELINE_ALIGNED_DATA(align)                                   \
191         . = ALIGN(align);                                               \
192         *(.data.cacheline_aligned)
193
194 #define INIT_TASK(align)                                                \
195         . = ALIGN(align);                                               \
196         *(.data.init_task)
197
198 /*
199  * Read only Data
200  */
201 #define RO_DATA_SECTION(align)                                          \
202         . = ALIGN((align));                                             \
203         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
204                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
205                 *(.rodata) *(.rodata.*)                                 \
206                 *(__vermagic)           /* Kernel version magic */      \
207                 *(__markers_strings)    /* Markers: strings */          \
208                 *(__tracepoints_strings)/* Tracepoints: strings */      \
209         }                                                               \
210                                                                         \
211         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
212                 *(.rodata1)                                             \
213         }                                                               \
214                                                                         \
215         BUG_TABLE                                                       \
216                                                                         \
217         /* PCI quirks */                                                \
218         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
219                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
220                 *(.pci_fixup_early)                                     \
221                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
222                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
223                 *(.pci_fixup_header)                                    \
224                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
225                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
226                 *(.pci_fixup_final)                                     \
227                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
228                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
229                 *(.pci_fixup_enable)                                    \
230                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
231                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
232                 *(.pci_fixup_resume)                                    \
233                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
234                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
235                 *(.pci_fixup_resume_early)                              \
236                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
237                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
238                 *(.pci_fixup_suspend)                                   \
239                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
240         }                                                               \
241                                                                         \
242         /* Built-in firmware blobs */                                   \
243         .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
244                 VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
245                 *(.builtin_fw)                                          \
246                 VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
247         }                                                               \
248                                                                         \
249         /* RapidIO route ops */                                         \
250         .rio_route        : AT(ADDR(.rio_route) - LOAD_OFFSET) {        \
251                 VMLINUX_SYMBOL(__start_rio_route_ops) = .;              \
252                 *(.rio_route_ops)                                       \
253                 VMLINUX_SYMBOL(__end_rio_route_ops) = .;                \
254         }                                                               \
255                                                                         \
256         TRACEDATA                                                       \
257                                                                         \
258         /* Kernel symbol table: Normal symbols */                       \
259         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
260                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
261                 *(__ksymtab)                                            \
262                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
263         }                                                               \
264                                                                         \
265         /* Kernel symbol table: GPL-only symbols */                     \
266         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
267                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
268                 *(__ksymtab_gpl)                                        \
269                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
270         }                                                               \
271                                                                         \
272         /* Kernel symbol table: Normal unused symbols */                \
273         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
274                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
275                 *(__ksymtab_unused)                                     \
276                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
277         }                                                               \
278                                                                         \
279         /* Kernel symbol table: GPL-only unused symbols */              \
280         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
281                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
282                 *(__ksymtab_unused_gpl)                                 \
283                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
284         }                                                               \
285                                                                         \
286         /* Kernel symbol table: GPL-future-only symbols */              \
287         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
288                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
289                 *(__ksymtab_gpl_future)                                 \
290                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
291         }                                                               \
292                                                                         \
293         /* Kernel symbol table: Normal symbols */                       \
294         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
295                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
296                 *(__kcrctab)                                            \
297                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
298         }                                                               \
299                                                                         \
300         /* Kernel symbol table: GPL-only symbols */                     \
301         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
302                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
303                 *(__kcrctab_gpl)                                        \
304                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
305         }                                                               \
306                                                                         \
307         /* Kernel symbol table: Normal unused symbols */                \
308         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
309                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
310                 *(__kcrctab_unused)                                     \
311                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
312         }                                                               \
313                                                                         \
314         /* Kernel symbol table: GPL-only unused symbols */              \
315         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
316                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
317                 *(__kcrctab_unused_gpl)                                 \
318                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
319         }                                                               \
320                                                                         \
321         /* Kernel symbol table: GPL-future-only symbols */              \
322         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
323                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
324                 *(__kcrctab_gpl_future)                                 \
325                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
326         }                                                               \
327                                                                         \
328         /* Kernel symbol table: strings */                              \
329         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
330                 *(__ksymtab_strings)                                    \
331         }                                                               \
332                                                                         \
333         /* __*init sections */                                          \
334         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
335                 *(.ref.rodata)                                          \
336                 MCOUNT_REC()                                            \
337                 DEV_KEEP(init.rodata)                                   \
338                 DEV_KEEP(exit.rodata)                                   \
339                 CPU_KEEP(init.rodata)                                   \
340                 CPU_KEEP(exit.rodata)                                   \
341                 MEM_KEEP(init.rodata)                                   \
342                 MEM_KEEP(exit.rodata)                                   \
343         }                                                               \
344                                                                         \
345         /* Built-in module parameters. */                               \
346         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
347                 VMLINUX_SYMBOL(__start___param) = .;                    \
348                 *(__param)                                              \
349                 VMLINUX_SYMBOL(__stop___param) = .;                     \
350                 . = ALIGN((align));                                     \
351                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
352         }                                                               \
353         . = ALIGN((align));
354
355 /* RODATA & RO_DATA provided for backward compatibility.
356  * All archs are supposed to use RO_DATA() */
357 #define RODATA          RO_DATA_SECTION(4096)
358 #define RO_DATA(align)  RO_DATA_SECTION(align)
359
360 #define SECURITY_INIT                                                   \
361         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
362                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
363                 *(.security_initcall.init)                              \
364                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
365         }
366
367 /* .text section. Map to function alignment to avoid address changes
368  * during second ld run in second ld pass when generating System.map */
369 #define TEXT_TEXT                                                       \
370                 ALIGN_FUNCTION();                                       \
371                 *(.text.hot)                                            \
372                 *(.text)                                                \
373                 *(.ref.text)                                            \
374         DEV_KEEP(init.text)                                             \
375         DEV_KEEP(exit.text)                                             \
376         CPU_KEEP(init.text)                                             \
377         CPU_KEEP(exit.text)                                             \
378         MEM_KEEP(init.text)                                             \
379         MEM_KEEP(exit.text)                                             \
380                 *(.text.unlikely)
381
382
383 /* sched.text is aling to function alignment to secure we have same
384  * address even at second ld pass when generating System.map */
385 #define SCHED_TEXT                                                      \
386                 ALIGN_FUNCTION();                                       \
387                 VMLINUX_SYMBOL(__sched_text_start) = .;                 \
388                 *(.sched.text)                                          \
389                 VMLINUX_SYMBOL(__sched_text_end) = .;
390
391 /* spinlock.text is aling to function alignment to secure we have same
392  * address even at second ld pass when generating System.map */
393 #define LOCK_TEXT                                                       \
394                 ALIGN_FUNCTION();                                       \
395                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
396                 *(.spinlock.text)                                       \
397                 VMLINUX_SYMBOL(__lock_text_end) = .;
398
399 #define KPROBES_TEXT                                                    \
400                 ALIGN_FUNCTION();                                       \
401                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
402                 *(.kprobes.text)                                        \
403                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
404
405 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
406 #define IRQENTRY_TEXT                                                   \
407                 ALIGN_FUNCTION();                                       \
408                 VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
409                 *(.irqentry.text)                                       \
410                 VMLINUX_SYMBOL(__irqentry_text_end) = .;
411 #else
412 #define IRQENTRY_TEXT
413 #endif
414
415 /* Section used for early init (in .S files) */
416 #define HEAD_TEXT  *(.head.text)
417
418 #define HEAD_TEXT_SECTION                                                       \
419         .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) {               \
420                 HEAD_TEXT                                               \
421         }
422
423 /*
424  * Exception table
425  */
426 #define EXCEPTION_TABLE(align)                                          \
427         . = ALIGN(align);                                               \
428         __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {               \
429                 VMLINUX_SYMBOL(__start___ex_table) = .;                 \
430                 *(__ex_table)                                           \
431                 VMLINUX_SYMBOL(__stop___ex_table) = .;                  \
432         }
433
434 /*
435  * Init task
436  */
437 #define INIT_TASK_DATA(align)                                           \
438         . = ALIGN(align);                                               \
439         .data.init_task : {                                             \
440                 INIT_TASK                                               \
441         }
442
443 #ifdef CONFIG_CONSTRUCTORS
444 #define KERNEL_CTORS()  . = ALIGN(8);                      \
445                         VMLINUX_SYMBOL(__ctors_start) = .; \
446                         *(.ctors)                          \
447                         VMLINUX_SYMBOL(__ctors_end) = .;
448 #else
449 #define KERNEL_CTORS()
450 #endif
451
452 /* init and exit section handling */
453 #define INIT_DATA                                                       \
454         *(.init.data)                                                   \
455         DEV_DISCARD(init.data)                                          \
456         CPU_DISCARD(init.data)                                          \
457         MEM_DISCARD(init.data)                                          \
458         KERNEL_CTORS()                                                  \
459         *(.init.rodata)                                                 \
460         DEV_DISCARD(init.rodata)                                        \
461         CPU_DISCARD(init.rodata)                                        \
462         MEM_DISCARD(init.rodata)
463
464 #define INIT_TEXT                                                       \
465         *(.init.text)                                                   \
466         DEV_DISCARD(init.text)                                          \
467         CPU_DISCARD(init.text)                                          \
468         MEM_DISCARD(init.text)
469
470 #define EXIT_DATA                                                       \
471         *(.exit.data)                                                   \
472         DEV_DISCARD(exit.data)                                          \
473         DEV_DISCARD(exit.rodata)                                        \
474         CPU_DISCARD(exit.data)                                          \
475         CPU_DISCARD(exit.rodata)                                        \
476         MEM_DISCARD(exit.data)                                          \
477         MEM_DISCARD(exit.rodata)
478
479 #define EXIT_TEXT                                                       \
480         *(.exit.text)                                                   \
481         DEV_DISCARD(exit.text)                                          \
482         CPU_DISCARD(exit.text)                                          \
483         MEM_DISCARD(exit.text)
484
485 #define EXIT_CALL                                                       \
486         *(.exitcall.exit)
487
488 /*
489  * bss (Block Started by Symbol) - uninitialized data
490  * zeroed during startup
491  */
492 #define SBSS                                                            \
493         .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) {                         \
494                 *(.sbss)                                                \
495                 *(.scommon)                                             \
496         }
497
498 #define BSS(bss_align)                                                  \
499         . = ALIGN(bss_align);                                           \
500         .bss : AT(ADDR(.bss) - LOAD_OFFSET) {                           \
501                 VMLINUX_SYMBOL(__bss_start) = .;                        \
502                 *(.bss.page_aligned)                                    \
503                 *(.dynbss)                                              \
504                 *(.bss)                                                 \
505                 *(COMMON)                                               \
506                 VMLINUX_SYMBOL(__bss_stop) = .;                         \
507         }
508
509 /*
510  * DWARF debug sections.
511  * Symbols in the DWARF debugging sections are relative to
512  * the beginning of the section so we begin them at 0.
513  */
514 #define DWARF_DEBUG                                                     \
515                 /* DWARF 1 */                                           \
516                 .debug          0 : { *(.debug) }                       \
517                 .line           0 : { *(.line) }                        \
518                 /* GNU DWARF 1 extensions */                            \
519                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
520                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
521                 /* DWARF 1.1 and DWARF 2 */                             \
522                 .debug_aranges  0 : { *(.debug_aranges) }               \
523                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
524                 /* DWARF 2 */                                           \
525                 .debug_info     0 : { *(.debug_info                     \
526                                 .gnu.linkonce.wi.*) }                   \
527                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
528                 .debug_line     0 : { *(.debug_line) }                  \
529                 .debug_frame    0 : { *(.debug_frame) }                 \
530                 .debug_str      0 : { *(.debug_str) }                   \
531                 .debug_loc      0 : { *(.debug_loc) }                   \
532                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
533                 /* SGI/MIPS DWARF 2 extensions */                       \
534                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
535                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
536                 .debug_typenames 0 : { *(.debug_typenames) }            \
537                 .debug_varnames  0 : { *(.debug_varnames) }             \
538
539                 /* Stabs debugging sections.  */
540 #define STABS_DEBUG                                                     \
541                 .stab 0 : { *(.stab) }                                  \
542                 .stabstr 0 : { *(.stabstr) }                            \
543                 .stab.excl 0 : { *(.stab.excl) }                        \
544                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
545                 .stab.index 0 : { *(.stab.index) }                      \
546                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
547                 .comment 0 : { *(.comment) }
548
549 #ifdef CONFIG_GENERIC_BUG
550 #define BUG_TABLE                                                       \
551         . = ALIGN(8);                                                   \
552         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
553                 VMLINUX_SYMBOL(__start___bug_table) = .;                \
554                 *(__bug_table)                                          \
555                 VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
556         }
557 #else
558 #define BUG_TABLE
559 #endif
560
561 #ifdef CONFIG_PM_TRACE
562 #define TRACEDATA                                                       \
563         . = ALIGN(4);                                                   \
564         .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
565                 VMLINUX_SYMBOL(__tracedata_start) = .;                  \
566                 *(.tracedata)                                           \
567                 VMLINUX_SYMBOL(__tracedata_end) = .;                    \
568         }
569 #else
570 #define TRACEDATA
571 #endif
572
573 #define NOTES                                                           \
574         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
575                 VMLINUX_SYMBOL(__start_notes) = .;                      \
576                 *(.note.*)                                              \
577                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
578         }
579
580 #define INIT_SETUP(initsetup_align)                                     \
581                 . = ALIGN(initsetup_align);                             \
582                 VMLINUX_SYMBOL(__setup_start) = .;                      \
583                 *(.init.setup)                                          \
584                 VMLINUX_SYMBOL(__setup_end) = .;
585
586 #define INITCALLS                                                       \
587         *(.initcallearly.init)                                          \
588         VMLINUX_SYMBOL(__early_initcall_end) = .;                       \
589         *(.initcall0.init)                                              \
590         *(.initcall0s.init)                                             \
591         *(.initcall1.init)                                              \
592         *(.initcall1s.init)                                             \
593         *(.initcall2.init)                                              \
594         *(.initcall2s.init)                                             \
595         *(.initcall3.init)                                              \
596         *(.initcall3s.init)                                             \
597         *(.initcall4.init)                                              \
598         *(.initcall4s.init)                                             \
599         *(.initcall5.init)                                              \
600         *(.initcall5s.init)                                             \
601         *(.initcallrootfs.init)                                         \
602         *(.initcall6.init)                                              \
603         *(.initcall6s.init)                                             \
604         *(.initcall7.init)                                              \
605         *(.initcall7s.init)
606
607 #define INIT_CALLS                                                      \
608                 VMLINUX_SYMBOL(__initcall_start) = .;                   \
609                 INITCALLS                                               \
610                 VMLINUX_SYMBOL(__initcall_end) = .;
611
612 #define CON_INITCALL                                                    \
613                 VMLINUX_SYMBOL(__con_initcall_start) = .;               \
614                 *(.con_initcall.init)                                   \
615                 VMLINUX_SYMBOL(__con_initcall_end) = .;
616
617 #define SECURITY_INITCALL                                               \
618                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
619                 *(.security_initcall.init)                              \
620                 VMLINUX_SYMBOL(__security_initcall_end) = .;
621
622 #ifdef CONFIG_BLK_DEV_INITRD
623 #define INIT_RAM_FS                                                     \
624         . = ALIGN(PAGE_SIZE);                                           \
625         VMLINUX_SYMBOL(__initramfs_start) = .;                          \
626         *(.init.ramfs)                                                  \
627         VMLINUX_SYMBOL(__initramfs_end) = .;
628 #else
629 #define INIT_RAM_FS
630 #endif
631
632 #define DISCARDS                                                        \
633         /DISCARD/ : {                                                   \
634         EXIT_TEXT                                                       \
635         EXIT_DATA                                                       \
636         *(.exitcall.exit)                                               \
637         *(.discard)                                                     \
638         }
639
640 /**
641  * PERCPU_VADDR - define output section for percpu area
642  * @vaddr: explicit base address (optional)
643  * @phdr: destination PHDR (optional)
644  *
645  * Macro which expands to output section for percpu area.  If @vaddr
646  * is not blank, it specifies explicit base address and all percpu
647  * symbols will be offset from the given address.  If blank, @vaddr
648  * always equals @laddr + LOAD_OFFSET.
649  *
650  * @phdr defines the output PHDR to use if not blank.  Be warned that
651  * output PHDR is sticky.  If @phdr is specified, the next output
652  * section in the linker script will go there too.  @phdr should have
653  * a leading colon.
654  *
655  * Note that this macros defines __per_cpu_load as an absolute symbol.
656  * If there is no need to put the percpu section at a predetermined
657  * address, use PERCPU().
658  */
659 #define PERCPU_VADDR(vaddr, phdr)                                       \
660         VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
661         .data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)          \
662                                 - LOAD_OFFSET) {                        \
663                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
664                 *(.data.percpu.first)                                   \
665                 *(.data.percpu.page_aligned)                            \
666                 *(.data.percpu)                                         \
667                 *(.data.percpu.shared_aligned)                          \
668                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
669         } phdr                                                          \
670         . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data.percpu);
671
672 /**
673  * PERCPU - define output section for percpu area, simple version
674  * @align: required alignment
675  *
676  * Align to @align and outputs output section for percpu area.  This
677  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
678  * __per_cpu_start will be identical.
679  *
680  * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
681  * that __per_cpu_load is defined as a relative symbol against
682  * .data.percpu which is required for relocatable x86_32
683  * configuration.
684  */
685 #define PERCPU(align)                                                   \
686         . = ALIGN(align);                                               \
687         .data.percpu    : AT(ADDR(.data.percpu) - LOAD_OFFSET) {        \
688                 VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
689                 VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
690                 *(.data.percpu.first)                                   \
691                 *(.data.percpu.page_aligned)                            \
692                 *(.data.percpu)                                         \
693                 *(.data.percpu.shared_aligned)                          \
694                 VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
695         }
696
697
698 /*
699  * Definition of the high level *_SECTION macros
700  * They will fit only a subset of the architectures
701  */
702
703
704 /*
705  * Writeable data.
706  * All sections are combined in a single .data section.
707  * The sections following CONSTRUCTORS are arranged so their
708  * typical alignment matches.
709  * A cacheline is typical/always less than a PAGE_SIZE so
710  * the sections that has this restriction (or similar)
711  * is located before the ones requiring PAGE_SIZE alignment.
712  * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
713  * matches the requirment of PAGE_ALIGNED_DATA.
714  *
715  * use 0 as page_align if page_aligned data is not used */
716 #define RW_DATA_SECTION(cacheline, nosave, pagealigned, inittask)       \
717         . = ALIGN(PAGE_SIZE);                                           \
718         .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
719                 INIT_TASK(inittask)                                     \
720                 CACHELINE_ALIGNED_DATA(cacheline)                       \
721                 READ_MOSTLY_DATA(cacheline)                             \
722                 DATA_DATA                                               \
723                 CONSTRUCTORS                                            \
724                 NOSAVE_DATA(nosave)                                     \
725                 PAGE_ALIGNED_DATA(pagealigned)                          \
726         }
727
728 #define INIT_TEXT_SECTION(inittext_align)                               \
729         . = ALIGN(inittext_align);                                      \
730         .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
731                 VMLINUX_SYMBOL(_sinittext) = .;                         \
732                 INIT_TEXT                                               \
733                 VMLINUX_SYMBOL(_einittext) = .;                         \
734         }
735
736 #define INIT_DATA_SECTION(initsetup_align)                              \
737         .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {               \
738                 INIT_DATA                                               \
739                 INIT_SETUP(initsetup_align)                             \
740                 INIT_CALLS                                              \
741                 CON_INITCALL                                            \
742                 SECURITY_INITCALL                                       \
743                 INIT_RAM_FS                                             \
744         }
745
746 #define BSS_SECTION(sbss_align, bss_align)                              \
747         SBSS                                                            \
748         BSS(bss_align)                                                  \
749         . = ALIGN(4);
750