include/asm-generic/vmlinux.lds.h

   1 #ifndef LOAD_OFFSET
   2 #define LOAD_OFFSET 0
   3 #endif
   4
   5 #ifndef VMLINUX_SYMBOL
   6 #define VMLINUX_SYMBOL(_sym_) _sym_
   7 #endif
   8
   9 /* Align . to a 8 byte boundary equals to maximum function alignment. */
  10 #define ALIGN_FUNCTION()  . = ALIGN(8)
  11
  12 /* The actual configuration determine if the init/exit sections
  13  * are handled as text/data or they can be discarded (which
  14  * often happens at runtime)
  15  */
  16 #ifdef CONFIG_HOTPLUG
  17 #define DEV_KEEP(sec)    *(.dev##sec)
  18 #define DEV_DISCARD(sec)
  19 #else
  20 #define DEV_KEEP(sec)
  21 #define DEV_DISCARD(sec) *(.dev##sec)
  22 #endif
  23
  24 #ifdef CONFIG_HOTPLUG_CPU
  25 #define CPU_KEEP(sec)    *(.cpu##sec)
  26 #define CPU_DISCARD(sec)
  27 #else
  28 #define CPU_KEEP(sec)
  29 #define CPU_DISCARD(sec) *(.cpu##sec)
  30 #endif
  31
  32 #if defined(CONFIG_MEMORY_HOTPLUG)
  33 #define MEM_KEEP(sec)    *(.mem##sec)
  34 #define MEM_DISCARD(sec)
  35 #else
  36 #define MEM_KEEP(sec)
  37 #define MEM_DISCARD(sec) *(.mem##sec)
  38 #endif
  39
  40
  41 /* .data section */
  42 #define DATA_DATA                                                       \
  43         *(.data)                                                        \
  44         *(.data.init.refok)                                             \
  45         *(.ref.data)                                                    \
  46         DEV_KEEP(init.data)                                             \
  47         DEV_KEEP(exit.data)                                             \
  48         CPU_KEEP(init.data)                                             \
  49         CPU_KEEP(exit.data)                                             \
  50         MEM_KEEP(init.data)                                             \
  51         MEM_KEEP(exit.data)                                             \
  52         . = ALIGN(8);                                                   \
  53         VMLINUX_SYMBOL(__start___markers) = .;                          \
  54         *(__markers)                                                    \
  55         VMLINUX_SYMBOL(__stop___markers) = .;
  56
  57 #define RO_DATA(align)                                                  \
  58         . = ALIGN((align));                                             \
  59         .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
  60                 VMLINUX_SYMBOL(__start_rodata) = .;                     \
  61                 *(.rodata) *(.rodata.*)                                 \
  62                 *(__vermagic)           /* Kernel version magic */      \
  63                 *(__markers_strings)    /* Markers: strings */          \
  64         }                                                               \
  65                                                                         \
  66         .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
  67                 *(.rodata1)                                             \
  68         }                                                               \
  69                                                                         \
  70         /* PCI quirks */                                                \
  71         .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
  72                 VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
  73                 *(.pci_fixup_early)                                     \
  74                 VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
  75                 VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
  76                 *(.pci_fixup_header)                                    \
  77                 VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
  78                 VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
  79                 *(.pci_fixup_final)                                     \
  80                 VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
  81                 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
  82                 *(.pci_fixup_enable)                                    \
  83                 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
  84                 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
  85                 *(.pci_fixup_resume)                                    \
  86                 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
  87                 VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
  88                 *(.pci_fixup_resume_early)                              \
  89                 VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
  90                 VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
  91                 *(.pci_fixup_suspend)                                   \
  92                 VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
  93         }                                                               \
  94                                                                         \
  95         /* RapidIO route ops */                                         \
  96         .rio_route        : AT(ADDR(.rio_route) - LOAD_OFFSET) {        \
  97                 VMLINUX_SYMBOL(__start_rio_route_ops) = .;              \
  98                 *(.rio_route_ops)                                       \
  99                 VMLINUX_SYMBOL(__end_rio_route_ops) = .;                \
 100         }                                                               \
 101                                                                         \
 102         /* Kernel symbol table: Normal symbols */                       \
 103         __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
 104                 VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
 105                 *(__ksymtab)                                            \
 106                 VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
 107         }                                                               \
 108                                                                         \
 109         /* Kernel symbol table: GPL-only symbols */                     \
 110         __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
 111                 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
 112                 *(__ksymtab_gpl)                                        \
 113                 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
 114         }                                                               \
 115                                                                         \
 116         /* Kernel symbol table: Normal unused symbols */                \
 117         __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
 118                 VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
 119                 *(__ksymtab_unused)                                     \
 120                 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
 121         }                                                               \
 122                                                                         \
 123         /* Kernel symbol table: GPL-only unused symbols */              \
 124         __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
 125                 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
 126                 *(__ksymtab_unused_gpl)                                 \
 127                 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
 128         }                                                               \
 129                                                                         \
 130         /* Kernel symbol table: GPL-future-only symbols */              \
 131         __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
 132                 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
 133                 *(__ksymtab_gpl_future)                                 \
 134                 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
 135         }                                                               \
 136                                                                         \
 137         /* Kernel symbol table: Normal symbols */                       \
 138         __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
 139                 VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
 140                 *(__kcrctab)                                            \
 141                 VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
 142         }                                                               \
 143                                                                         \
 144         /* Kernel symbol table: GPL-only symbols */                     \
 145         __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
 146                 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
 147                 *(__kcrctab_gpl)                                        \
 148                 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
 149         }                                                               \
 150                                                                         \
 151         /* Kernel symbol table: Normal unused symbols */                \
 152         __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
 153                 VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
 154                 *(__kcrctab_unused)                                     \
 155                 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
 156         }                                                               \
 157                                                                         \
 158         /* Kernel symbol table: GPL-only unused symbols */              \
 159         __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
 160                 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
 161                 *(__kcrctab_unused_gpl)                                 \
 162                 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
 163         }                                                               \
 164                                                                         \
 165         /* Kernel symbol table: GPL-future-only symbols */              \
 166         __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
 167                 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
 168                 *(__kcrctab_gpl_future)                                 \
 169                 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .;        \
 170         }                                                               \
 171                                                                         \
 172         /* Kernel symbol table: strings */                              \
 173         __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
 174                 *(__ksymtab_strings)                                    \
 175         }                                                               \
 176                                                                         \
 177         /* __*init sections */                                          \
 178         __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
 179                 *(.ref.rodata)                                          \
 180                 DEV_KEEP(init.rodata)                                   \
 181                 DEV_KEEP(exit.rodata)                                   \
 182                 CPU_KEEP(init.rodata)                                   \
 183                 CPU_KEEP(exit.rodata)                                   \
 184                 MEM_KEEP(init.rodata)                                   \
 185                 MEM_KEEP(exit.rodata)                                   \
 186         }                                                               \
 187                                                                         \
 188         /* Built-in module parameters. */                               \
 189         __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
 190                 VMLINUX_SYMBOL(__start___param) = .;                    \
 191                 *(__param)                                              \
 192                 VMLINUX_SYMBOL(__stop___param) = .;                     \
 193                 . = ALIGN((align));                                     \
 194                 VMLINUX_SYMBOL(__end_rodata) = .;                       \
 195         }                                                               \
 196         . = ALIGN((align));
 197
 198 /* RODATA provided for backward compatibility.
 199  * All archs are supposed to use RO_DATA() */
 200 #define RODATA RO_DATA(4096)
 201
 202 #define SECURITY_INIT                                                   \
 203         .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
 204                 VMLINUX_SYMBOL(__security_initcall_start) = .;          \
 205                 *(.security_initcall.init)                              \
 206                 VMLINUX_SYMBOL(__security_initcall_end) = .;            \
 207         }
 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)                                                \
 214                 *(.ref.text)                                            \
 215                 *(.text.init.refok)                                     \
 216                 *(.exit.text.refok)                                     \
 217         DEV_KEEP(init.text)                                             \
 218         DEV_KEEP(exit.text)                                             \
 219         CPU_KEEP(init.text)                                             \
 220         CPU_KEEP(exit.text)                                             \
 221         MEM_KEEP(init.text)                                             \
 222         MEM_KEEP(exit.text)
 223
 224
 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
 233 /* spinlock.text is aling to function alignment to secure we have same
 234  * address even at second ld pass when generating System.map */
 235 #define LOCK_TEXT                                                       \
 236                 ALIGN_FUNCTION();                                       \
 237                 VMLINUX_SYMBOL(__lock_text_start) = .;                  \
 238                 *(.spinlock.text)                                       \
 239                 VMLINUX_SYMBOL(__lock_text_end) = .;
 240
 241 #define KPROBES_TEXT                                                    \
 242                 ALIGN_FUNCTION();                                       \
 243                 VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
 244                 *(.kprobes.text)                                        \
 245                 VMLINUX_SYMBOL(__kprobes_text_end) = .;
 246
 247 /* Section used for early init (in .S files) */
 248 #define HEAD_TEXT  *(.head.text)
 249
 250 /* init and exit section handling */
 251 #define INIT_DATA                                                       \
 252         *(.init.data)                                                   \
 253         DEV_DISCARD(init.data)                                          \
 254         DEV_DISCARD(init.rodata)                                        \
 255         CPU_DISCARD(init.data)                                          \
 256         CPU_DISCARD(init.rodata)                                        \
 257         MEM_DISCARD(init.data)                                          \
 258         MEM_DISCARD(init.rodata)
 259
 260 #define INIT_TEXT                                                       \
 261         *(.init.text)                                                   \
 262         DEV_DISCARD(init.text)                                          \
 263         CPU_DISCARD(init.text)                                          \
 264         MEM_DISCARD(init.text)
 265
 266 #define EXIT_DATA                                                       \
 267         *(.exit.data)                                                   \
 268         DEV_DISCARD(exit.data)                                          \
 269         DEV_DISCARD(exit.rodata)                                        \
 270         CPU_DISCARD(exit.data)                                          \
 271         CPU_DISCARD(exit.rodata)                                        \
 272         MEM_DISCARD(exit.data)                                          \
 273         MEM_DISCARD(exit.rodata)
 274
 275 #define EXIT_TEXT                                                       \
 276         *(.exit.text)                                                   \
 277         DEV_DISCARD(exit.text)                                          \
 278         CPU_DISCARD(exit.text)                                          \
 279         MEM_DISCARD(exit.text)
 280
 281                 /* DWARF debug sections.
 282                 Symbols in the DWARF debugging sections are relative to
 283                 the beginning of the section so we begin them at 0.  */
 284 #define DWARF_DEBUG                                                     \
 285                 /* DWARF 1 */                                           \
 286                 .debug          0 : { *(.debug) }                       \
 287                 .line           0 : { *(.line) }                        \
 288                 /* GNU DWARF 1 extensions */                            \
 289                 .debug_srcinfo  0 : { *(.debug_srcinfo) }               \
 290                 .debug_sfnames  0 : { *(.debug_sfnames) }               \
 291                 /* DWARF 1.1 and DWARF 2 */                             \
 292                 .debug_aranges  0 : { *(.debug_aranges) }               \
 293                 .debug_pubnames 0 : { *(.debug_pubnames) }              \
 294                 /* DWARF 2 */                                           \
 295                 .debug_info     0 : { *(.debug_info                     \
 296                                 .gnu.linkonce.wi.*) }                   \
 297                 .debug_abbrev   0 : { *(.debug_abbrev) }                \
 298                 .debug_line     0 : { *(.debug_line) }                  \
 299                 .debug_frame    0 : { *(.debug_frame) }                 \
 300                 .debug_str      0 : { *(.debug_str) }                   \
 301                 .debug_loc      0 : { *(.debug_loc) }                   \
 302                 .debug_macinfo  0 : { *(.debug_macinfo) }               \
 303                 /* SGI/MIPS DWARF 2 extensions */                       \
 304                 .debug_weaknames 0 : { *(.debug_weaknames) }            \
 305                 .debug_funcnames 0 : { *(.debug_funcnames) }            \
 306                 .debug_typenames 0 : { *(.debug_typenames) }            \
 307                 .debug_varnames  0 : { *(.debug_varnames) }             \
 308
 309                 /* Stabs debugging sections.  */
 310 #define STABS_DEBUG                                                     \
 311                 .stab 0 : { *(.stab) }                                  \
 312                 .stabstr 0 : { *(.stabstr) }                            \
 313                 .stab.excl 0 : { *(.stab.excl) }                        \
 314                 .stab.exclstr 0 : { *(.stab.exclstr) }                  \
 315                 .stab.index 0 : { *(.stab.index) }                      \
 316                 .stab.indexstr 0 : { *(.stab.indexstr) }                \
 317                 .comment 0 : { *(.comment) }
 318
 319 #define BUG_TABLE                                                       \
 320         . = ALIGN(8);                                                   \
 321         __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
 322                 __start___bug_table = .;                                \
 323                 *(__bug_table)                                          \
 324                 __stop___bug_table = .;                                 \
 325         }
 326
 327 #define NOTES                                                           \
 328         .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
 329                 VMLINUX_SYMBOL(__start_notes) = .;                      \
 330                 *(.note.*)                                              \
 331                 VMLINUX_SYMBOL(__stop_notes) = .;                       \
 332         }
 333
 334 #define INITCALLS                                                       \
 335         *(.initcall0.init)                                              \
 336         *(.initcall0s.init)                                             \
 337         *(.initcall1.init)                                              \
 338         *(.initcall1s.init)                                             \
 339         *(.initcall2.init)                                              \
 340         *(.initcall2s.init)                                             \
 341         *(.initcall3.init)                                              \
 342         *(.initcall3s.init)                                             \
 343         *(.initcall4.init)                                              \
 344         *(.initcall4s.init)                                             \
 345         *(.initcall5.init)                                              \
 346         *(.initcall5s.init)                                             \
 347         *(.initcallrootfs.init)                                         \
 348         *(.initcall6.init)                                              \
 349         *(.initcall6s.init)                                             \
 350         *(.initcall7.init)                                              \
 351         *(.initcall7s.init)
 352
 353 #define PERCPU(align)                                                   \
 354         . = ALIGN(align);                                               \
 355         __per_cpu_start = .;                                            \
 356         .data.percpu  : AT(ADDR(.data.percpu) - LOAD_OFFSET) {          \
 357                 *(.data.percpu)                                         \
 358                 *(.data.percpu.shared_aligned)                          \
 359         }                                                               \
 360         __per_cpu_end = .;