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