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