vmlinux.lds.h 11 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. /* PCI quirks */ \
  63. .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
  64. VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
  65. *(.pci_fixup_early) \
  66. VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
  67. VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
  68. *(.pci_fixup_header) \
  69. VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
  70. VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
  71. *(.pci_fixup_final) \
  72. VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
  73. VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
  74. *(.pci_fixup_enable) \
  75. VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
  76. VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
  77. *(.pci_fixup_resume) \
  78. VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
  79. } \
  80. \
  81. /* RapidIO route ops */ \
  82. .rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
  83. VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
  84. *(.rio_route_ops) \
  85. VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
  86. } \
  87. \
  88. /* Kernel symbol table: Normal symbols */ \
  89. __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
  90. VMLINUX_SYMBOL(__start___ksymtab) = .; \
  91. *(__ksymtab) \
  92. VMLINUX_SYMBOL(__stop___ksymtab) = .; \
  93. } \
  94. \
  95. /* Kernel symbol table: GPL-only symbols */ \
  96. __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
  97. VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
  98. *(__ksymtab_gpl) \
  99. VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
  100. } \
  101. \
  102. /* Kernel symbol table: Normal unused symbols */ \
  103. __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
  104. VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
  105. *(__ksymtab_unused) \
  106. VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
  107. } \
  108. \
  109. /* Kernel symbol table: GPL-only unused symbols */ \
  110. __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
  111. VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
  112. *(__ksymtab_unused_gpl) \
  113. VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
  114. } \
  115. \
  116. /* Kernel symbol table: GPL-future-only symbols */ \
  117. __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
  118. VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
  119. *(__ksymtab_gpl_future) \
  120. VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
  121. } \
  122. \
  123. /* Kernel symbol table: Normal symbols */ \
  124. __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
  125. VMLINUX_SYMBOL(__start___kcrctab) = .; \
  126. *(__kcrctab) \
  127. VMLINUX_SYMBOL(__stop___kcrctab) = .; \
  128. } \
  129. \
  130. /* Kernel symbol table: GPL-only symbols */ \
  131. __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
  132. VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
  133. *(__kcrctab_gpl) \
  134. VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
  135. } \
  136. \
  137. /* Kernel symbol table: Normal unused symbols */ \
  138. __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
  139. VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
  140. *(__kcrctab_unused) \
  141. VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
  142. } \
  143. \
  144. /* Kernel symbol table: GPL-only unused symbols */ \
  145. __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
  146. VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
  147. *(__kcrctab_unused_gpl) \
  148. VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
  149. } \
  150. \
  151. /* Kernel symbol table: GPL-future-only symbols */ \
  152. __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
  153. VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
  154. *(__kcrctab_gpl_future) \
  155. VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
  156. } \
  157. \
  158. /* Kernel symbol table: strings */ \
  159. __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
  160. *(__ksymtab_strings) \
  161. } \
  162. \
  163. /* __*init sections */ \
  164. __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
  165. *(.ref.rodata) \
  166. DEV_KEEP(init.rodata) \
  167. DEV_KEEP(exit.rodata) \
  168. CPU_KEEP(init.rodata) \
  169. CPU_KEEP(exit.rodata) \
  170. MEM_KEEP(init.rodata) \
  171. MEM_KEEP(exit.rodata) \
  172. } \
  173. \
  174. /* Built-in module parameters. */ \
  175. __param : AT(ADDR(__param) - LOAD_OFFSET) { \
  176. VMLINUX_SYMBOL(__start___param) = .; \
  177. *(__param) \
  178. VMLINUX_SYMBOL(__stop___param) = .; \
  179. . = ALIGN((align)); \
  180. VMLINUX_SYMBOL(__end_rodata) = .; \
  181. } \
  182. . = ALIGN((align));
  183. /* RODATA provided for backward compatibility.
  184. * All archs are supposed to use RO_DATA() */
  185. #define RODATA RO_DATA(4096)
  186. #define SECURITY_INIT \
  187. .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
  188. VMLINUX_SYMBOL(__security_initcall_start) = .; \
  189. *(.security_initcall.init) \
  190. VMLINUX_SYMBOL(__security_initcall_end) = .; \
  191. }
  192. /* .text section. Map to function alignment to avoid address changes
  193. * during second ld run in second ld pass when generating System.map */
  194. #define TEXT_TEXT \
  195. ALIGN_FUNCTION(); \
  196. *(.text) \
  197. *(.ref.text) \
  198. *(.text.init.refok) \
  199. *(.exit.text.refok) \
  200. DEV_KEEP(init.text) \
  201. DEV_KEEP(exit.text) \
  202. CPU_KEEP(init.text) \
  203. CPU_KEEP(exit.text) \
  204. MEM_KEEP(init.text) \
  205. MEM_KEEP(exit.text)
  206. /* sched.text is aling to function alignment to secure we have same
  207. * address even at second ld pass when generating System.map */
  208. #define SCHED_TEXT \
  209. ALIGN_FUNCTION(); \
  210. VMLINUX_SYMBOL(__sched_text_start) = .; \
  211. *(.sched.text) \
  212. VMLINUX_SYMBOL(__sched_text_end) = .;
  213. /* spinlock.text is aling to function alignment to secure we have same
  214. * address even at second ld pass when generating System.map */
  215. #define LOCK_TEXT \
  216. ALIGN_FUNCTION(); \
  217. VMLINUX_SYMBOL(__lock_text_start) = .; \
  218. *(.spinlock.text) \
  219. VMLINUX_SYMBOL(__lock_text_end) = .;
  220. #define KPROBES_TEXT \
  221. ALIGN_FUNCTION(); \
  222. VMLINUX_SYMBOL(__kprobes_text_start) = .; \
  223. *(.kprobes.text) \
  224. VMLINUX_SYMBOL(__kprobes_text_end) = .;
  225. /* Section used for early init (in .S files) */
  226. #define HEAD_TEXT *(.head.text)
  227. /* init and exit section handling */
  228. #define INIT_DATA \
  229. *(.init.data) \
  230. DEV_DISCARD(init.data) \
  231. DEV_DISCARD(init.rodata) \
  232. CPU_DISCARD(init.data) \
  233. CPU_DISCARD(init.rodata) \
  234. MEM_DISCARD(init.data) \
  235. MEM_DISCARD(init.rodata)
  236. #define INIT_TEXT \
  237. *(.init.text) \
  238. DEV_DISCARD(init.text) \
  239. CPU_DISCARD(init.text) \
  240. MEM_DISCARD(init.text)
  241. #define EXIT_DATA \
  242. *(.exit.data) \
  243. DEV_DISCARD(exit.data) \
  244. DEV_DISCARD(exit.rodata) \
  245. CPU_DISCARD(exit.data) \
  246. CPU_DISCARD(exit.rodata) \
  247. MEM_DISCARD(exit.data) \
  248. MEM_DISCARD(exit.rodata)
  249. #define EXIT_TEXT \
  250. *(.exit.text) \
  251. DEV_DISCARD(exit.text) \
  252. CPU_DISCARD(exit.text) \
  253. MEM_DISCARD(exit.text)
  254. /* DWARF debug sections.
  255. Symbols in the DWARF debugging sections are relative to
  256. the beginning of the section so we begin them at 0. */
  257. #define DWARF_DEBUG \
  258. /* DWARF 1 */ \
  259. .debug 0 : { *(.debug) } \
  260. .line 0 : { *(.line) } \
  261. /* GNU DWARF 1 extensions */ \
  262. .debug_srcinfo 0 : { *(.debug_srcinfo) } \
  263. .debug_sfnames 0 : { *(.debug_sfnames) } \
  264. /* DWARF 1.1 and DWARF 2 */ \
  265. .debug_aranges 0 : { *(.debug_aranges) } \
  266. .debug_pubnames 0 : { *(.debug_pubnames) } \
  267. /* DWARF 2 */ \
  268. .debug_info 0 : { *(.debug_info \
  269. .gnu.linkonce.wi.*) } \
  270. .debug_abbrev 0 : { *(.debug_abbrev) } \
  271. .debug_line 0 : { *(.debug_line) } \
  272. .debug_frame 0 : { *(.debug_frame) } \
  273. .debug_str 0 : { *(.debug_str) } \
  274. .debug_loc 0 : { *(.debug_loc) } \
  275. .debug_macinfo 0 : { *(.debug_macinfo) } \
  276. /* SGI/MIPS DWARF 2 extensions */ \
  277. .debug_weaknames 0 : { *(.debug_weaknames) } \
  278. .debug_funcnames 0 : { *(.debug_funcnames) } \
  279. .debug_typenames 0 : { *(.debug_typenames) } \
  280. .debug_varnames 0 : { *(.debug_varnames) } \
  281. /* Stabs debugging sections. */
  282. #define STABS_DEBUG \
  283. .stab 0 : { *(.stab) } \
  284. .stabstr 0 : { *(.stabstr) } \
  285. .stab.excl 0 : { *(.stab.excl) } \
  286. .stab.exclstr 0 : { *(.stab.exclstr) } \
  287. .stab.index 0 : { *(.stab.index) } \
  288. .stab.indexstr 0 : { *(.stab.indexstr) } \
  289. .comment 0 : { *(.comment) }
  290. #define BUG_TABLE \
  291. . = ALIGN(8); \
  292. __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
  293. __start___bug_table = .; \
  294. *(__bug_table) \
  295. __stop___bug_table = .; \
  296. }
  297. #define NOTES \
  298. .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
  299. VMLINUX_SYMBOL(__start_notes) = .; \
  300. *(.note.*) \
  301. VMLINUX_SYMBOL(__stop_notes) = .; \
  302. }
  303. #define INITCALLS \
  304. *(.initcall0.init) \
  305. *(.initcall0s.init) \
  306. *(.initcall1.init) \
  307. *(.initcall1s.init) \
  308. *(.initcall2.init) \
  309. *(.initcall2s.init) \
  310. *(.initcall3.init) \
  311. *(.initcall3s.init) \
  312. *(.initcall4.init) \
  313. *(.initcall4s.init) \
  314. *(.initcall5.init) \
  315. *(.initcall5s.init) \
  316. *(.initcallrootfs.init) \
  317. *(.initcall6.init) \
  318. *(.initcall6s.init) \
  319. *(.initcall7.init) \
  320. *(.initcall7s.init)
  321. #define PERCPU(align) \
  322. . = ALIGN(align); \
  323. __per_cpu_start = .; \
  324. .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
  325. *(.data.percpu) \
  326. *(.data.percpu.shared_aligned) \
  327. } \
  328. __per_cpu_end = .;