vmlinux.lds.h 14 KB

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  1. #ifndef LOAD_OFFSET
  2. #define LOAD_OFFSET 0
  3. #endif
  4. #ifndef VMLINUX_SYMBOL
  5. #define VMLINUX_SYMBOL(_sym_) _sym_
  6. #endif
  7. /* Align . to a 8 byte boundary equals to maximum function alignment. */
  8. #define ALIGN_FUNCTION() . = ALIGN(8)
  9. /* The actual configuration determine if the init/exit sections
  10. * are handled as text/data or they can be discarded (which
  11. * often happens at runtime)
  12. */
  13. #ifdef CONFIG_HOTPLUG
  14. #define DEV_KEEP(sec) *(.dev##sec)
  15. #define DEV_DISCARD(sec)
  16. #else
  17. #define DEV_KEEP(sec)
  18. #define DEV_DISCARD(sec) *(.dev##sec)
  19. #endif
  20. #ifdef CONFIG_HOTPLUG_CPU
  21. #define CPU_KEEP(sec) *(.cpu##sec)
  22. #define CPU_DISCARD(sec)
  23. #else
  24. #define CPU_KEEP(sec)
  25. #define CPU_DISCARD(sec) *(.cpu##sec)
  26. #endif
  27. #if defined(CONFIG_MEMORY_HOTPLUG)
  28. #define MEM_KEEP(sec) *(.mem##sec)
  29. #define MEM_DISCARD(sec)
  30. #else
  31. #define MEM_KEEP(sec)
  32. #define MEM_DISCARD(sec) *(.mem##sec)
  33. #endif
  34. #ifdef CONFIG_FTRACE_MCOUNT_RECORD
  35. #define MCOUNT_REC() VMLINUX_SYMBOL(__start_mcount_loc) = .; \
  36. *(__mcount_loc) \
  37. VMLINUX_SYMBOL(__stop_mcount_loc) = .;
  38. #else
  39. #define MCOUNT_REC()
  40. #endif
  41. #ifdef CONFIG_TRACE_BRANCH_PROFILING
  42. #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
  43. *(_ftrace_annotated_branch) \
  44. VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
  45. #else
  46. #define LIKELY_PROFILE()
  47. #endif
  48. #ifdef CONFIG_PROFILE_ALL_BRANCHES
  49. #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \
  50. *(_ftrace_branch) \
  51. VMLINUX_SYMBOL(__stop_branch_profile) = .;
  52. #else
  53. #define BRANCH_PROFILE()
  54. #endif
  55. #ifdef CONFIG_EVENT_TRACER
  56. #define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .; \
  57. *(_ftrace_events) \
  58. VMLINUX_SYMBOL(__stop_ftrace_events) = .;
  59. #else
  60. #define FTRACE_EVENTS()
  61. #endif
  62. /* .data section */
  63. #define DATA_DATA \
  64. *(.data) \
  65. *(.data.init.refok) \
  66. *(.ref.data) \
  67. DEV_KEEP(init.data) \
  68. DEV_KEEP(exit.data) \
  69. CPU_KEEP(init.data) \
  70. CPU_KEEP(exit.data) \
  71. MEM_KEEP(init.data) \
  72. MEM_KEEP(exit.data) \
  73. . = ALIGN(8); \
  74. VMLINUX_SYMBOL(__start___markers) = .; \
  75. *(__markers) \
  76. VMLINUX_SYMBOL(__stop___markers) = .; \
  77. . = ALIGN(32); \
  78. VMLINUX_SYMBOL(__start___tracepoints) = .; \
  79. *(__tracepoints) \
  80. VMLINUX_SYMBOL(__stop___tracepoints) = .; \
  81. LIKELY_PROFILE() \
  82. BRANCH_PROFILE() \
  83. FTRACE_EVENTS()
  84. #define RO_DATA(align) \
  85. . = ALIGN((align)); \
  86. .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
  87. VMLINUX_SYMBOL(__start_rodata) = .; \
  88. *(.rodata) *(.rodata.*) \
  89. *(__vermagic) /* Kernel version magic */ \
  90. *(__markers_strings) /* Markers: strings */ \
  91. *(__tracepoints_strings)/* Tracepoints: strings */ \
  92. } \
  93. \
  94. .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
  95. *(.rodata1) \
  96. } \
  97. \
  98. BUG_TABLE \
  99. \
  100. /* PCI quirks */ \
  101. .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
  102. VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
  103. *(.pci_fixup_early) \
  104. VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
  105. VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
  106. *(.pci_fixup_header) \
  107. VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
  108. VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
  109. *(.pci_fixup_final) \
  110. VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
  111. VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
  112. *(.pci_fixup_enable) \
  113. VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
  114. VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
  115. *(.pci_fixup_resume) \
  116. VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
  117. VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
  118. *(.pci_fixup_resume_early) \
  119. VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
  120. VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
  121. *(.pci_fixup_suspend) \
  122. VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
  123. } \
  124. \
  125. /* Built-in firmware blobs */ \
  126. .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
  127. VMLINUX_SYMBOL(__start_builtin_fw) = .; \
  128. *(.builtin_fw) \
  129. VMLINUX_SYMBOL(__end_builtin_fw) = .; \
  130. } \
  131. \
  132. /* RapidIO route ops */ \
  133. .rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
  134. VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
  135. *(.rio_route_ops) \
  136. VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
  137. } \
  138. \
  139. TRACEDATA \
  140. \
  141. /* Kernel symbol table: Normal symbols */ \
  142. __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
  143. VMLINUX_SYMBOL(__start___ksymtab) = .; \
  144. *(__ksymtab) \
  145. VMLINUX_SYMBOL(__stop___ksymtab) = .; \
  146. } \
  147. \
  148. /* Kernel symbol table: GPL-only symbols */ \
  149. __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
  150. VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
  151. *(__ksymtab_gpl) \
  152. VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
  153. } \
  154. \
  155. /* Kernel symbol table: Normal unused symbols */ \
  156. __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
  157. VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
  158. *(__ksymtab_unused) \
  159. VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
  160. } \
  161. \
  162. /* Kernel symbol table: GPL-only unused symbols */ \
  163. __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
  164. VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
  165. *(__ksymtab_unused_gpl) \
  166. VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
  167. } \
  168. \
  169. /* Kernel symbol table: GPL-future-only symbols */ \
  170. __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
  171. VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
  172. *(__ksymtab_gpl_future) \
  173. VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
  174. } \
  175. \
  176. /* Kernel symbol table: Normal symbols */ \
  177. __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
  178. VMLINUX_SYMBOL(__start___kcrctab) = .; \
  179. *(__kcrctab) \
  180. VMLINUX_SYMBOL(__stop___kcrctab) = .; \
  181. } \
  182. \
  183. /* Kernel symbol table: GPL-only symbols */ \
  184. __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
  185. VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
  186. *(__kcrctab_gpl) \
  187. VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
  188. } \
  189. \
  190. /* Kernel symbol table: Normal unused symbols */ \
  191. __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
  192. VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
  193. *(__kcrctab_unused) \
  194. VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
  195. } \
  196. \
  197. /* Kernel symbol table: GPL-only unused symbols */ \
  198. __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
  199. VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
  200. *(__kcrctab_unused_gpl) \
  201. VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
  202. } \
  203. \
  204. /* Kernel symbol table: GPL-future-only symbols */ \
  205. __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
  206. VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
  207. *(__kcrctab_gpl_future) \
  208. VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
  209. } \
  210. \
  211. /* Kernel symbol table: strings */ \
  212. __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
  213. *(__ksymtab_strings) \
  214. } \
  215. \
  216. /* __*init sections */ \
  217. __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
  218. *(.ref.rodata) \
  219. MCOUNT_REC() \
  220. DEV_KEEP(init.rodata) \
  221. DEV_KEEP(exit.rodata) \
  222. CPU_KEEP(init.rodata) \
  223. CPU_KEEP(exit.rodata) \
  224. MEM_KEEP(init.rodata) \
  225. MEM_KEEP(exit.rodata) \
  226. } \
  227. \
  228. /* Built-in module parameters. */ \
  229. __param : AT(ADDR(__param) - LOAD_OFFSET) { \
  230. VMLINUX_SYMBOL(__start___param) = .; \
  231. *(__param) \
  232. VMLINUX_SYMBOL(__stop___param) = .; \
  233. . = ALIGN((align)); \
  234. VMLINUX_SYMBOL(__end_rodata) = .; \
  235. } \
  236. . = ALIGN((align));
  237. /* RODATA provided for backward compatibility.
  238. * All archs are supposed to use RO_DATA() */
  239. #define RODATA RO_DATA(4096)
  240. #define SECURITY_INIT \
  241. .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
  242. VMLINUX_SYMBOL(__security_initcall_start) = .; \
  243. *(.security_initcall.init) \
  244. VMLINUX_SYMBOL(__security_initcall_end) = .; \
  245. }
  246. /* .text section. Map to function alignment to avoid address changes
  247. * during second ld run in second ld pass when generating System.map */
  248. #define TEXT_TEXT \
  249. ALIGN_FUNCTION(); \
  250. *(.text.hot) \
  251. *(.text) \
  252. *(.ref.text) \
  253. *(.text.init.refok) \
  254. *(.exit.text.refok) \
  255. DEV_KEEP(init.text) \
  256. DEV_KEEP(exit.text) \
  257. CPU_KEEP(init.text) \
  258. CPU_KEEP(exit.text) \
  259. MEM_KEEP(init.text) \
  260. MEM_KEEP(exit.text) \
  261. *(.text.unlikely)
  262. /* sched.text is aling to function alignment to secure we have same
  263. * address even at second ld pass when generating System.map */
  264. #define SCHED_TEXT \
  265. ALIGN_FUNCTION(); \
  266. VMLINUX_SYMBOL(__sched_text_start) = .; \
  267. *(.sched.text) \
  268. VMLINUX_SYMBOL(__sched_text_end) = .;
  269. /* spinlock.text is aling to function alignment to secure we have same
  270. * address even at second ld pass when generating System.map */
  271. #define LOCK_TEXT \
  272. ALIGN_FUNCTION(); \
  273. VMLINUX_SYMBOL(__lock_text_start) = .; \
  274. *(.spinlock.text) \
  275. VMLINUX_SYMBOL(__lock_text_end) = .;
  276. #define KPROBES_TEXT \
  277. ALIGN_FUNCTION(); \
  278. VMLINUX_SYMBOL(__kprobes_text_start) = .; \
  279. *(.kprobes.text) \
  280. VMLINUX_SYMBOL(__kprobes_text_end) = .;
  281. #ifdef CONFIG_FUNCTION_GRAPH_TRACER
  282. #define IRQENTRY_TEXT \
  283. ALIGN_FUNCTION(); \
  284. VMLINUX_SYMBOL(__irqentry_text_start) = .; \
  285. *(.irqentry.text) \
  286. VMLINUX_SYMBOL(__irqentry_text_end) = .;
  287. #else
  288. #define IRQENTRY_TEXT
  289. #endif
  290. /* Section used for early init (in .S files) */
  291. #define HEAD_TEXT *(.head.text)
  292. /* init and exit section handling */
  293. #define INIT_DATA \
  294. *(.init.data) \
  295. DEV_DISCARD(init.data) \
  296. DEV_DISCARD(init.rodata) \
  297. CPU_DISCARD(init.data) \
  298. CPU_DISCARD(init.rodata) \
  299. MEM_DISCARD(init.data) \
  300. MEM_DISCARD(init.rodata) \
  301. /* implement dynamic printk debug */ \
  302. VMLINUX_SYMBOL(__start___verbose_strings) = .; \
  303. *(__verbose_strings) \
  304. VMLINUX_SYMBOL(__stop___verbose_strings) = .; \
  305. . = ALIGN(8); \
  306. VMLINUX_SYMBOL(__start___verbose) = .; \
  307. *(__verbose) \
  308. VMLINUX_SYMBOL(__stop___verbose) = .;
  309. #define INIT_TEXT \
  310. *(.init.text) \
  311. DEV_DISCARD(init.text) \
  312. CPU_DISCARD(init.text) \
  313. MEM_DISCARD(init.text)
  314. #define EXIT_DATA \
  315. *(.exit.data) \
  316. DEV_DISCARD(exit.data) \
  317. DEV_DISCARD(exit.rodata) \
  318. CPU_DISCARD(exit.data) \
  319. CPU_DISCARD(exit.rodata) \
  320. MEM_DISCARD(exit.data) \
  321. MEM_DISCARD(exit.rodata)
  322. #define EXIT_TEXT \
  323. *(.exit.text) \
  324. DEV_DISCARD(exit.text) \
  325. CPU_DISCARD(exit.text) \
  326. MEM_DISCARD(exit.text)
  327. /* DWARF debug sections.
  328. Symbols in the DWARF debugging sections are relative to
  329. the beginning of the section so we begin them at 0. */
  330. #define DWARF_DEBUG \
  331. /* DWARF 1 */ \
  332. .debug 0 : { *(.debug) } \
  333. .line 0 : { *(.line) } \
  334. /* GNU DWARF 1 extensions */ \
  335. .debug_srcinfo 0 : { *(.debug_srcinfo) } \
  336. .debug_sfnames 0 : { *(.debug_sfnames) } \
  337. /* DWARF 1.1 and DWARF 2 */ \
  338. .debug_aranges 0 : { *(.debug_aranges) } \
  339. .debug_pubnames 0 : { *(.debug_pubnames) } \
  340. /* DWARF 2 */ \
  341. .debug_info 0 : { *(.debug_info \
  342. .gnu.linkonce.wi.*) } \
  343. .debug_abbrev 0 : { *(.debug_abbrev) } \
  344. .debug_line 0 : { *(.debug_line) } \
  345. .debug_frame 0 : { *(.debug_frame) } \
  346. .debug_str 0 : { *(.debug_str) } \
  347. .debug_loc 0 : { *(.debug_loc) } \
  348. .debug_macinfo 0 : { *(.debug_macinfo) } \
  349. /* SGI/MIPS DWARF 2 extensions */ \
  350. .debug_weaknames 0 : { *(.debug_weaknames) } \
  351. .debug_funcnames 0 : { *(.debug_funcnames) } \
  352. .debug_typenames 0 : { *(.debug_typenames) } \
  353. .debug_varnames 0 : { *(.debug_varnames) } \
  354. /* Stabs debugging sections. */
  355. #define STABS_DEBUG \
  356. .stab 0 : { *(.stab) } \
  357. .stabstr 0 : { *(.stabstr) } \
  358. .stab.excl 0 : { *(.stab.excl) } \
  359. .stab.exclstr 0 : { *(.stab.exclstr) } \
  360. .stab.index 0 : { *(.stab.index) } \
  361. .stab.indexstr 0 : { *(.stab.indexstr) } \
  362. .comment 0 : { *(.comment) }
  363. #ifdef CONFIG_GENERIC_BUG
  364. #define BUG_TABLE \
  365. . = ALIGN(8); \
  366. __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
  367. VMLINUX_SYMBOL(__start___bug_table) = .; \
  368. *(__bug_table) \
  369. VMLINUX_SYMBOL(__stop___bug_table) = .; \
  370. }
  371. #else
  372. #define BUG_TABLE
  373. #endif
  374. #ifdef CONFIG_PM_TRACE
  375. #define TRACEDATA \
  376. . = ALIGN(4); \
  377. .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
  378. VMLINUX_SYMBOL(__tracedata_start) = .; \
  379. *(.tracedata) \
  380. VMLINUX_SYMBOL(__tracedata_end) = .; \
  381. }
  382. #else
  383. #define TRACEDATA
  384. #endif
  385. #define NOTES \
  386. .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
  387. VMLINUX_SYMBOL(__start_notes) = .; \
  388. *(.note.*) \
  389. VMLINUX_SYMBOL(__stop_notes) = .; \
  390. }
  391. #define INITCALLS \
  392. *(.initcallearly.init) \
  393. VMLINUX_SYMBOL(__early_initcall_end) = .; \
  394. *(.initcall0.init) \
  395. *(.initcall0s.init) \
  396. *(.initcall1.init) \
  397. *(.initcall1s.init) \
  398. *(.initcall2.init) \
  399. *(.initcall2s.init) \
  400. *(.initcall3.init) \
  401. *(.initcall3s.init) \
  402. *(.initcall4.init) \
  403. *(.initcall4s.init) \
  404. *(.initcall5.init) \
  405. *(.initcall5s.init) \
  406. *(.initcallrootfs.init) \
  407. *(.initcall6.init) \
  408. *(.initcall6s.init) \
  409. *(.initcall7.init) \
  410. *(.initcall7s.init)
  411. #define PERCPU(align) \
  412. . = ALIGN(align); \
  413. VMLINUX_SYMBOL(__per_cpu_start) = .; \
  414. .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
  415. *(.data.percpu.page_aligned) \
  416. *(.data.percpu) \
  417. *(.data.percpu.shared_aligned) \
  418. } \
  419. VMLINUX_SYMBOL(__per_cpu_end) = .;