vmlinux.lds.S 4.6 KB

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  1. /* ld script to make i386 Linux kernel
  2. * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
  3. */
  4. #define LOAD_OFFSET __PAGE_OFFSET
  5. #include <asm-generic/vmlinux.lds.h>
  6. #include <asm/thread_info.h>
  7. #include <asm/page.h>
  8. #include <asm/cache.h>
  9. OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
  10. OUTPUT_ARCH(i386)
  11. ENTRY(phys_startup_32)
  12. jiffies = jiffies_64;
  13. PHDRS {
  14. text PT_LOAD FLAGS(5); /* R_E */
  15. data PT_LOAD FLAGS(7); /* RWE */
  16. note PT_NOTE FLAGS(4); /* R__ */
  17. }
  18. SECTIONS
  19. {
  20. . = __KERNEL_START;
  21. phys_startup_32 = startup_32 - LOAD_OFFSET;
  22. /* read-only */
  23. _text = .; /* Text and read-only data */
  24. .text : AT(ADDR(.text) - LOAD_OFFSET) {
  25. *(.text)
  26. SCHED_TEXT
  27. LOCK_TEXT
  28. KPROBES_TEXT
  29. *(.fixup)
  30. *(.gnu.warning)
  31. } :text = 0x9090
  32. _etext = .; /* End of text section */
  33. . = ALIGN(16); /* Exception table */
  34. __start___ex_table = .;
  35. __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
  36. __stop___ex_table = .;
  37. RODATA
  38. . = ALIGN(4);
  39. __tracedata_start = .;
  40. .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
  41. *(.tracedata)
  42. }
  43. __tracedata_end = .;
  44. /* writeable */
  45. .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
  46. *(.data)
  47. CONSTRUCTORS
  48. } :data
  49. . = ALIGN(4096);
  50. __nosave_begin = .;
  51. .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
  52. . = ALIGN(4096);
  53. __nosave_end = .;
  54. . = ALIGN(4096);
  55. .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
  56. *(.data.idt)
  57. }
  58. . = ALIGN(32);
  59. .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
  60. *(.data.cacheline_aligned)
  61. }
  62. /* rarely changed data like cpu maps */
  63. . = ALIGN(32);
  64. .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) { *(.data.read_mostly) }
  65. _edata = .; /* End of data section */
  66. #ifdef CONFIG_STACK_UNWIND
  67. . = ALIGN(4);
  68. .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {
  69. __start_unwind = .;
  70. *(.eh_frame)
  71. __end_unwind = .;
  72. }
  73. #endif
  74. . = ALIGN(THREAD_SIZE); /* init_task */
  75. .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
  76. *(.data.init_task)
  77. }
  78. /* might get freed after init */
  79. . = ALIGN(4096);
  80. __smp_alt_begin = .;
  81. __smp_alt_instructions = .;
  82. .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
  83. *(.smp_altinstructions)
  84. }
  85. __smp_alt_instructions_end = .;
  86. . = ALIGN(4);
  87. __smp_locks = .;
  88. .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
  89. *(.smp_locks)
  90. }
  91. __smp_locks_end = .;
  92. .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
  93. *(.smp_altinstr_replacement)
  94. }
  95. . = ALIGN(4096);
  96. __smp_alt_end = .;
  97. /* will be freed after init */
  98. . = ALIGN(4096); /* Init code and data */
  99. __init_begin = .;
  100. .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
  101. _sinittext = .;
  102. *(.init.text)
  103. _einittext = .;
  104. }
  105. .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
  106. . = ALIGN(16);
  107. __setup_start = .;
  108. .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
  109. __setup_end = .;
  110. __initcall_start = .;
  111. .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
  112. *(.initcall1.init)
  113. *(.initcall2.init)
  114. *(.initcall3.init)
  115. *(.initcall4.init)
  116. *(.initcall5.init)
  117. *(.initcall6.init)
  118. *(.initcall7.init)
  119. }
  120. __initcall_end = .;
  121. __con_initcall_start = .;
  122. .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
  123. *(.con_initcall.init)
  124. }
  125. __con_initcall_end = .;
  126. SECURITY_INIT
  127. . = ALIGN(4);
  128. __alt_instructions = .;
  129. .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
  130. *(.altinstructions)
  131. }
  132. __alt_instructions_end = .;
  133. .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
  134. *(.altinstr_replacement)
  135. }
  136. /* .exit.text is discard at runtime, not link time, to deal with references
  137. from .altinstructions and .eh_frame */
  138. .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
  139. .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
  140. . = ALIGN(4096);
  141. __initramfs_start = .;
  142. .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
  143. __initramfs_end = .;
  144. . = ALIGN(L1_CACHE_BYTES);
  145. __per_cpu_start = .;
  146. .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
  147. __per_cpu_end = .;
  148. . = ALIGN(4096);
  149. __init_end = .;
  150. /* freed after init ends here */
  151. __bss_start = .; /* BSS */
  152. .bss.page_aligned : AT(ADDR(.bss.page_aligned) - LOAD_OFFSET) {
  153. *(.bss.page_aligned)
  154. }
  155. .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
  156. *(.bss)
  157. }
  158. . = ALIGN(4);
  159. __bss_stop = .;
  160. _end = . ;
  161. /* This is where the kernel creates the early boot page tables */
  162. . = ALIGN(4096);
  163. pg0 = .;
  164. /* Sections to be discarded */
  165. /DISCARD/ : {
  166. *(.exitcall.exit)
  167. }
  168. STABS_DEBUG
  169. DWARF_DEBUG
  170. NOTES
  171. }