vmlinux.lds.h 11 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360
  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. /* RapidIO route ops */ \
  84. .rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
  85. VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
  86. *(.rio_route_ops) \
  87. VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
  88. } \
  89. \
  90. /* Kernel symbol table: Normal symbols */ \
  91. __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
  92. VMLINUX_SYMBOL(__start___ksymtab) = .; \
  93. *(__ksymtab) \
  94. VMLINUX_SYMBOL(__stop___ksymtab) = .; \
  95. } \
  96. \
  97. /* Kernel symbol table: GPL-only symbols */ \
  98. __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
  99. VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
  100. *(__ksymtab_gpl) \
  101. VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
  102. } \
  103. \
  104. /* Kernel symbol table: Normal unused symbols */ \
  105. __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
  106. VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
  107. *(__ksymtab_unused) \
  108. VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
  109. } \
  110. \
  111. /* Kernel symbol table: GPL-only unused symbols */ \
  112. __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
  113. VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
  114. *(__ksymtab_unused_gpl) \
  115. VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
  116. } \
  117. \
  118. /* Kernel symbol table: GPL-future-only symbols */ \
  119. __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
  120. VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
  121. *(__ksymtab_gpl_future) \
  122. VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
  123. } \
  124. \
  125. /* Kernel symbol table: Normal symbols */ \
  126. __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
  127. VMLINUX_SYMBOL(__start___kcrctab) = .; \
  128. *(__kcrctab) \
  129. VMLINUX_SYMBOL(__stop___kcrctab) = .; \
  130. } \
  131. \
  132. /* Kernel symbol table: GPL-only symbols */ \
  133. __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
  134. VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
  135. *(__kcrctab_gpl) \
  136. VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
  137. } \
  138. \
  139. /* Kernel symbol table: Normal unused symbols */ \
  140. __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
  141. VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
  142. *(__kcrctab_unused) \
  143. VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
  144. } \
  145. \
  146. /* Kernel symbol table: GPL-only unused symbols */ \
  147. __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
  148. VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
  149. *(__kcrctab_unused_gpl) \
  150. VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
  151. } \
  152. \
  153. /* Kernel symbol table: GPL-future-only symbols */ \
  154. __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
  155. VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
  156. *(__kcrctab_gpl_future) \
  157. VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
  158. } \
  159. \
  160. /* Kernel symbol table: strings */ \
  161. __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
  162. *(__ksymtab_strings) \
  163. } \
  164. \
  165. /* __*init sections */ \
  166. __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
  167. *(.ref.rodata) \
  168. DEV_KEEP(init.rodata) \
  169. DEV_KEEP(exit.rodata) \
  170. CPU_KEEP(init.rodata) \
  171. CPU_KEEP(exit.rodata) \
  172. MEM_KEEP(init.rodata) \
  173. MEM_KEEP(exit.rodata) \
  174. } \
  175. \
  176. /* Built-in module parameters. */ \
  177. __param : AT(ADDR(__param) - LOAD_OFFSET) { \
  178. VMLINUX_SYMBOL(__start___param) = .; \
  179. *(__param) \
  180. VMLINUX_SYMBOL(__stop___param) = .; \
  181. . = ALIGN((align)); \
  182. VMLINUX_SYMBOL(__end_rodata) = .; \
  183. } \
  184. . = ALIGN((align));
  185. /* RODATA provided for backward compatibility.
  186. * All archs are supposed to use RO_DATA() */
  187. #define RODATA RO_DATA(4096)
  188. #define SECURITY_INIT \
  189. .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
  190. VMLINUX_SYMBOL(__security_initcall_start) = .; \
  191. *(.security_initcall.init) \
  192. VMLINUX_SYMBOL(__security_initcall_end) = .; \
  193. }
  194. /* .text section. Map to function alignment to avoid address changes
  195. * during second ld run in second ld pass when generating System.map */
  196. #define TEXT_TEXT \
  197. ALIGN_FUNCTION(); \
  198. *(.text) \
  199. *(.ref.text) \
  200. *(.text.init.refok) \
  201. *(.exit.text.refok) \
  202. DEV_KEEP(init.text) \
  203. DEV_KEEP(exit.text) \
  204. CPU_KEEP(init.text) \
  205. CPU_KEEP(exit.text) \
  206. MEM_KEEP(init.text) \
  207. MEM_KEEP(exit.text)
  208. /* sched.text is aling to function alignment to secure we have same
  209. * address even at second ld pass when generating System.map */
  210. #define SCHED_TEXT \
  211. ALIGN_FUNCTION(); \
  212. VMLINUX_SYMBOL(__sched_text_start) = .; \
  213. *(.sched.text) \
  214. VMLINUX_SYMBOL(__sched_text_end) = .;
  215. /* spinlock.text is aling to function alignment to secure we have same
  216. * address even at second ld pass when generating System.map */
  217. #define LOCK_TEXT \
  218. ALIGN_FUNCTION(); \
  219. VMLINUX_SYMBOL(__lock_text_start) = .; \
  220. *(.spinlock.text) \
  221. VMLINUX_SYMBOL(__lock_text_end) = .;
  222. #define KPROBES_TEXT \
  223. ALIGN_FUNCTION(); \
  224. VMLINUX_SYMBOL(__kprobes_text_start) = .; \
  225. *(.kprobes.text) \
  226. VMLINUX_SYMBOL(__kprobes_text_end) = .;
  227. /* Section used for early init (in .S files) */
  228. #define HEAD_TEXT *(.head.text)
  229. /* init and exit section handling */
  230. #define INIT_DATA \
  231. *(.init.data) \
  232. DEV_DISCARD(init.data) \
  233. DEV_DISCARD(init.rodata) \
  234. CPU_DISCARD(init.data) \
  235. CPU_DISCARD(init.rodata) \
  236. MEM_DISCARD(init.data) \
  237. MEM_DISCARD(init.rodata)
  238. #define INIT_TEXT \
  239. *(.init.text) \
  240. DEV_DISCARD(init.text) \
  241. CPU_DISCARD(init.text) \
  242. MEM_DISCARD(init.text)
  243. #define EXIT_DATA \
  244. *(.exit.data) \
  245. DEV_DISCARD(exit.data) \
  246. DEV_DISCARD(exit.rodata) \
  247. CPU_DISCARD(exit.data) \
  248. CPU_DISCARD(exit.rodata) \
  249. MEM_DISCARD(exit.data) \
  250. MEM_DISCARD(exit.rodata)
  251. #define EXIT_TEXT \
  252. *(.exit.text) \
  253. DEV_DISCARD(exit.text) \
  254. CPU_DISCARD(exit.text) \
  255. MEM_DISCARD(exit.text)
  256. /* DWARF debug sections.
  257. Symbols in the DWARF debugging sections are relative to
  258. the beginning of the section so we begin them at 0. */
  259. #define DWARF_DEBUG \
  260. /* DWARF 1 */ \
  261. .debug 0 : { *(.debug) } \
  262. .line 0 : { *(.line) } \
  263. /* GNU DWARF 1 extensions */ \
  264. .debug_srcinfo 0 : { *(.debug_srcinfo) } \
  265. .debug_sfnames 0 : { *(.debug_sfnames) } \
  266. /* DWARF 1.1 and DWARF 2 */ \
  267. .debug_aranges 0 : { *(.debug_aranges) } \
  268. .debug_pubnames 0 : { *(.debug_pubnames) } \
  269. /* DWARF 2 */ \
  270. .debug_info 0 : { *(.debug_info \
  271. .gnu.linkonce.wi.*) } \
  272. .debug_abbrev 0 : { *(.debug_abbrev) } \
  273. .debug_line 0 : { *(.debug_line) } \
  274. .debug_frame 0 : { *(.debug_frame) } \
  275. .debug_str 0 : { *(.debug_str) } \
  276. .debug_loc 0 : { *(.debug_loc) } \
  277. .debug_macinfo 0 : { *(.debug_macinfo) } \
  278. /* SGI/MIPS DWARF 2 extensions */ \
  279. .debug_weaknames 0 : { *(.debug_weaknames) } \
  280. .debug_funcnames 0 : { *(.debug_funcnames) } \
  281. .debug_typenames 0 : { *(.debug_typenames) } \
  282. .debug_varnames 0 : { *(.debug_varnames) } \
  283. /* Stabs debugging sections. */
  284. #define STABS_DEBUG \
  285. .stab 0 : { *(.stab) } \
  286. .stabstr 0 : { *(.stabstr) } \
  287. .stab.excl 0 : { *(.stab.excl) } \
  288. .stab.exclstr 0 : { *(.stab.exclstr) } \
  289. .stab.index 0 : { *(.stab.index) } \
  290. .stab.indexstr 0 : { *(.stab.indexstr) } \
  291. .comment 0 : { *(.comment) }
  292. #ifdef CONFIG_GENERIC_BUG
  293. #define BUG_TABLE \
  294. . = ALIGN(8); \
  295. __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
  296. __start___bug_table = .; \
  297. *(__bug_table) \
  298. __stop___bug_table = .; \
  299. }
  300. #else
  301. #define BUG_TABLE
  302. #endif
  303. #define NOTES \
  304. .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
  305. VMLINUX_SYMBOL(__start_notes) = .; \
  306. *(.note.*) \
  307. VMLINUX_SYMBOL(__stop_notes) = .; \
  308. }
  309. #define INITCALLS \
  310. *(.initcall0.init) \
  311. *(.initcall0s.init) \
  312. *(.initcall1.init) \
  313. *(.initcall1s.init) \
  314. *(.initcall2.init) \
  315. *(.initcall2s.init) \
  316. *(.initcall3.init) \
  317. *(.initcall3s.init) \
  318. *(.initcall4.init) \
  319. *(.initcall4s.init) \
  320. *(.initcall5.init) \
  321. *(.initcall5s.init) \
  322. *(.initcallrootfs.init) \
  323. *(.initcall6.init) \
  324. *(.initcall6s.init) \
  325. *(.initcall7.init) \
  326. *(.initcall7s.init)
  327. #define PERCPU(align) \
  328. . = ALIGN(align); \
  329. __per_cpu_start = .; \
  330. .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
  331. *(.data.percpu) \
  332. *(.data.percpu.shared_aligned) \
  333. } \
  334. __per_cpu_end = .;