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