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