vmlinux.lds.h 12 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. /* .data section */
  35. #define DATA_DATA \
  36. *(.data) \
  37. *(.data.init.refok) \
  38. *(.ref.data) \
  39. DEV_KEEP(init.data) \
  40. DEV_KEEP(exit.data) \
  41. CPU_KEEP(init.data) \
  42. CPU_KEEP(exit.data) \
  43. MEM_KEEP(init.data) \
  44. MEM_KEEP(exit.data) \
  45. . = ALIGN(8); \
  46. VMLINUX_SYMBOL(__start___markers) = .; \
  47. *(__markers) \
  48. VMLINUX_SYMBOL(__stop___markers) = .;
  49. #define RO_DATA(align) \
  50. . = ALIGN((align)); \
  51. .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
  52. VMLINUX_SYMBOL(__start_rodata) = .; \
  53. *(.rodata) *(.rodata.*) \
  54. *(__vermagic) /* Kernel version magic */ \
  55. *(__markers_strings) /* Markers: strings */ \
  56. } \
  57. \
  58. .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
  59. *(.rodata1) \
  60. } \
  61. \
  62. BUG_TABLE \
  63. \
  64. /* PCI quirks */ \
  65. .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
  66. VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
  67. *(.pci_fixup_early) \
  68. VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
  69. VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
  70. *(.pci_fixup_header) \
  71. VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
  72. VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
  73. *(.pci_fixup_final) \
  74. VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
  75. VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
  76. *(.pci_fixup_enable) \
  77. VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
  78. VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
  79. *(.pci_fixup_resume) \
  80. VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
  81. VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \
  82. *(.pci_fixup_resume_early) \
  83. VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \
  84. VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \
  85. *(.pci_fixup_suspend) \
  86. VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \
  87. } \
  88. \
  89. /* Built-in firmware blobs */ \
  90. .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
  91. VMLINUX_SYMBOL(__start_builtin_fw) = .; \
  92. *(.builtin_fw) \
  93. VMLINUX_SYMBOL(__end_builtin_fw) = .; \
  94. } \
  95. \
  96. /* RapidIO route ops */ \
  97. .rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
  98. VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
  99. *(.rio_route_ops) \
  100. VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
  101. } \
  102. \
  103. TRACEDATA \
  104. \
  105. /* Kernel symbol table: Normal symbols */ \
  106. __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
  107. VMLINUX_SYMBOL(__start___ksymtab) = .; \
  108. *(__ksymtab) \
  109. VMLINUX_SYMBOL(__stop___ksymtab) = .; \
  110. } \
  111. \
  112. /* Kernel symbol table: GPL-only symbols */ \
  113. __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
  114. VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
  115. *(__ksymtab_gpl) \
  116. VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
  117. } \
  118. \
  119. /* Kernel symbol table: Normal unused symbols */ \
  120. __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
  121. VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
  122. *(__ksymtab_unused) \
  123. VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
  124. } \
  125. \
  126. /* Kernel symbol table: GPL-only unused symbols */ \
  127. __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
  128. VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
  129. *(__ksymtab_unused_gpl) \
  130. VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
  131. } \
  132. \
  133. /* Kernel symbol table: GPL-future-only symbols */ \
  134. __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
  135. VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
  136. *(__ksymtab_gpl_future) \
  137. VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
  138. } \
  139. \
  140. /* Kernel symbol table: Normal symbols */ \
  141. __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
  142. VMLINUX_SYMBOL(__start___kcrctab) = .; \
  143. *(__kcrctab) \
  144. VMLINUX_SYMBOL(__stop___kcrctab) = .; \
  145. } \
  146. \
  147. /* Kernel symbol table: GPL-only symbols */ \
  148. __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
  149. VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
  150. *(__kcrctab_gpl) \
  151. VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
  152. } \
  153. \
  154. /* Kernel symbol table: Normal unused symbols */ \
  155. __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
  156. VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
  157. *(__kcrctab_unused) \
  158. VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
  159. } \
  160. \
  161. /* Kernel symbol table: GPL-only unused symbols */ \
  162. __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
  163. VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
  164. *(__kcrctab_unused_gpl) \
  165. VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
  166. } \
  167. \
  168. /* Kernel symbol table: GPL-future-only symbols */ \
  169. __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
  170. VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
  171. *(__kcrctab_gpl_future) \
  172. VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
  173. } \
  174. \
  175. /* Kernel symbol table: strings */ \
  176. __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
  177. *(__ksymtab_strings) \
  178. } \
  179. \
  180. /* __*init sections */ \
  181. __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
  182. *(.ref.rodata) \
  183. DEV_KEEP(init.rodata) \
  184. DEV_KEEP(exit.rodata) \
  185. CPU_KEEP(init.rodata) \
  186. CPU_KEEP(exit.rodata) \
  187. MEM_KEEP(init.rodata) \
  188. MEM_KEEP(exit.rodata) \
  189. } \
  190. \
  191. /* Built-in module parameters. */ \
  192. __param : AT(ADDR(__param) - LOAD_OFFSET) { \
  193. VMLINUX_SYMBOL(__start___param) = .; \
  194. *(__param) \
  195. VMLINUX_SYMBOL(__stop___param) = .; \
  196. . = ALIGN((align)); \
  197. VMLINUX_SYMBOL(__end_rodata) = .; \
  198. } \
  199. . = ALIGN((align));
  200. /* RODATA provided for backward compatibility.
  201. * All archs are supposed to use RO_DATA() */
  202. #define RODATA RO_DATA(4096)
  203. #define SECURITY_INIT \
  204. .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
  205. VMLINUX_SYMBOL(__security_initcall_start) = .; \
  206. *(.security_initcall.init) \
  207. VMLINUX_SYMBOL(__security_initcall_end) = .; \
  208. }
  209. /* .text section. Map to function alignment to avoid address changes
  210. * during second ld run in second ld pass when generating System.map */
  211. #define TEXT_TEXT \
  212. ALIGN_FUNCTION(); \
  213. *(.text.hot) \
  214. *(.text) \
  215. *(.ref.text) \
  216. *(.text.init.refok) \
  217. *(.exit.text.refok) \
  218. DEV_KEEP(init.text) \
  219. DEV_KEEP(exit.text) \
  220. CPU_KEEP(init.text) \
  221. CPU_KEEP(exit.text) \
  222. MEM_KEEP(init.text) \
  223. MEM_KEEP(exit.text) \
  224. *(.text.unlikely)
  225. /* sched.text is aling to function alignment to secure we have same
  226. * address even at second ld pass when generating System.map */
  227. #define SCHED_TEXT \
  228. ALIGN_FUNCTION(); \
  229. VMLINUX_SYMBOL(__sched_text_start) = .; \
  230. *(.sched.text) \
  231. VMLINUX_SYMBOL(__sched_text_end) = .;
  232. /* spinlock.text is aling to function alignment to secure we have same
  233. * address even at second ld pass when generating System.map */
  234. #define LOCK_TEXT \
  235. ALIGN_FUNCTION(); \
  236. VMLINUX_SYMBOL(__lock_text_start) = .; \
  237. *(.spinlock.text) \
  238. VMLINUX_SYMBOL(__lock_text_end) = .;
  239. #define KPROBES_TEXT \
  240. ALIGN_FUNCTION(); \
  241. VMLINUX_SYMBOL(__kprobes_text_start) = .; \
  242. *(.kprobes.text) \
  243. VMLINUX_SYMBOL(__kprobes_text_end) = .;
  244. /* Section used for early init (in .S files) */
  245. #define HEAD_TEXT *(.head.text)
  246. /* init and exit section handling */
  247. #define INIT_DATA \
  248. *(.init.data) \
  249. DEV_DISCARD(init.data) \
  250. DEV_DISCARD(init.rodata) \
  251. CPU_DISCARD(init.data) \
  252. CPU_DISCARD(init.rodata) \
  253. MEM_DISCARD(init.data) \
  254. MEM_DISCARD(init.rodata)
  255. #define INIT_TEXT \
  256. *(.init.text) \
  257. DEV_DISCARD(init.text) \
  258. CPU_DISCARD(init.text) \
  259. MEM_DISCARD(init.text)
  260. #define EXIT_DATA \
  261. *(.exit.data) \
  262. DEV_DISCARD(exit.data) \
  263. DEV_DISCARD(exit.rodata) \
  264. CPU_DISCARD(exit.data) \
  265. CPU_DISCARD(exit.rodata) \
  266. MEM_DISCARD(exit.data) \
  267. MEM_DISCARD(exit.rodata)
  268. #define EXIT_TEXT \
  269. *(.exit.text) \
  270. DEV_DISCARD(exit.text) \
  271. CPU_DISCARD(exit.text) \
  272. MEM_DISCARD(exit.text)
  273. /* DWARF debug sections.
  274. Symbols in the DWARF debugging sections are relative to
  275. the beginning of the section so we begin them at 0. */
  276. #define DWARF_DEBUG \
  277. /* DWARF 1 */ \
  278. .debug 0 : { *(.debug) } \
  279. .line 0 : { *(.line) } \
  280. /* GNU DWARF 1 extensions */ \
  281. .debug_srcinfo 0 : { *(.debug_srcinfo) } \
  282. .debug_sfnames 0 : { *(.debug_sfnames) } \
  283. /* DWARF 1.1 and DWARF 2 */ \
  284. .debug_aranges 0 : { *(.debug_aranges) } \
  285. .debug_pubnames 0 : { *(.debug_pubnames) } \
  286. /* DWARF 2 */ \
  287. .debug_info 0 : { *(.debug_info \
  288. .gnu.linkonce.wi.*) } \
  289. .debug_abbrev 0 : { *(.debug_abbrev) } \
  290. .debug_line 0 : { *(.debug_line) } \
  291. .debug_frame 0 : { *(.debug_frame) } \
  292. .debug_str 0 : { *(.debug_str) } \
  293. .debug_loc 0 : { *(.debug_loc) } \
  294. .debug_macinfo 0 : { *(.debug_macinfo) } \
  295. /* SGI/MIPS DWARF 2 extensions */ \
  296. .debug_weaknames 0 : { *(.debug_weaknames) } \
  297. .debug_funcnames 0 : { *(.debug_funcnames) } \
  298. .debug_typenames 0 : { *(.debug_typenames) } \
  299. .debug_varnames 0 : { *(.debug_varnames) } \
  300. /* Stabs debugging sections. */
  301. #define STABS_DEBUG \
  302. .stab 0 : { *(.stab) } \
  303. .stabstr 0 : { *(.stabstr) } \
  304. .stab.excl 0 : { *(.stab.excl) } \
  305. .stab.exclstr 0 : { *(.stab.exclstr) } \
  306. .stab.index 0 : { *(.stab.index) } \
  307. .stab.indexstr 0 : { *(.stab.indexstr) } \
  308. .comment 0 : { *(.comment) }
  309. #ifdef CONFIG_GENERIC_BUG
  310. #define BUG_TABLE \
  311. . = ALIGN(8); \
  312. __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
  313. VMLINUX_SYMBOL(__start___bug_table) = .; \
  314. *(__bug_table) \
  315. VMLINUX_SYMBOL(__stop___bug_table) = .; \
  316. }
  317. #else
  318. #define BUG_TABLE
  319. #endif
  320. #ifdef CONFIG_PM_TRACE
  321. #define TRACEDATA \
  322. . = ALIGN(4); \
  323. .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
  324. VMLINUX_SYMBOL(__tracedata_start) = .; \
  325. *(.tracedata) \
  326. VMLINUX_SYMBOL(__tracedata_end) = .; \
  327. }
  328. #else
  329. #define TRACEDATA
  330. #endif
  331. #define NOTES \
  332. .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
  333. VMLINUX_SYMBOL(__start_notes) = .; \
  334. *(.note.*) \
  335. VMLINUX_SYMBOL(__stop_notes) = .; \
  336. }
  337. #define INITCALLS \
  338. *(.initcallearly.init) \
  339. VMLINUX_SYMBOL(__early_initcall_end) = .; \
  340. *(.initcall0.init) \
  341. *(.initcall0s.init) \
  342. *(.initcall1.init) \
  343. *(.initcall1s.init) \
  344. *(.initcall2.init) \
  345. *(.initcall2s.init) \
  346. *(.initcall3.init) \
  347. *(.initcall3s.init) \
  348. *(.initcall4.init) \
  349. *(.initcall4s.init) \
  350. *(.initcall5.init) \
  351. *(.initcall5s.init) \
  352. *(.initcallrootfs.init) \
  353. *(.initcall6.init) \
  354. *(.initcall6s.init) \
  355. *(.initcall7.init) \
  356. *(.initcall7s.init)
  357. #define PERCPU(align) \
  358. . = ALIGN(align); \
  359. VMLINUX_SYMBOL(__per_cpu_start) = .; \
  360. .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
  361. *(.data.percpu) \
  362. *(.data.percpu.shared_aligned) \
  363. } \
  364. VMLINUX_SYMBOL(__per_cpu_end) = .;