1ef53dae8SSam Ravnborg /* 2ef53dae8SSam Ravnborg * Helper macros to support writing architecture specific 3ef53dae8SSam Ravnborg * linker scripts. 4ef53dae8SSam Ravnborg * 5ef53dae8SSam Ravnborg * A minimal linker scripts has following content: 6ef53dae8SSam Ravnborg * [This is a sample, architectures may have special requiriements] 7ef53dae8SSam Ravnborg * 8ef53dae8SSam Ravnborg * OUTPUT_FORMAT(...) 9ef53dae8SSam Ravnborg * OUTPUT_ARCH(...) 10ef53dae8SSam Ravnborg * ENTRY(...) 11ef53dae8SSam Ravnborg * SECTIONS 12ef53dae8SSam Ravnborg * { 13ef53dae8SSam Ravnborg * . = START; 14ef53dae8SSam Ravnborg * __init_begin = .; 157923f90fSSam Ravnborg * HEAD_TEXT_SECTION 16ef53dae8SSam Ravnborg * INIT_TEXT_SECTION(PAGE_SIZE) 17ef53dae8SSam Ravnborg * INIT_DATA_SECTION(...) 18ef53dae8SSam Ravnborg * PERCPU(PAGE_SIZE) 19ef53dae8SSam Ravnborg * __init_end = .; 20ef53dae8SSam Ravnborg * 21ef53dae8SSam Ravnborg * _stext = .; 22ef53dae8SSam Ravnborg * TEXT_SECTION = 0 23ef53dae8SSam Ravnborg * _etext = .; 24ef53dae8SSam Ravnborg * 25ef53dae8SSam Ravnborg * _sdata = .; 26ef53dae8SSam Ravnborg * RO_DATA_SECTION(PAGE_SIZE) 27ef53dae8SSam Ravnborg * RW_DATA_SECTION(...) 28ef53dae8SSam Ravnborg * _edata = .; 29ef53dae8SSam Ravnborg * 30ef53dae8SSam Ravnborg * EXCEPTION_TABLE(...) 31ef53dae8SSam Ravnborg * NOTES 32ef53dae8SSam Ravnborg * 3304e448d9STim Abbott * BSS_SECTION(0, 0, 0) 34ef53dae8SSam Ravnborg * _end = .; 35ef53dae8SSam Ravnborg * 36ef53dae8SSam Ravnborg * STABS_DEBUG 37ef53dae8SSam Ravnborg * DWARF_DEBUG 38023bf6f1STejun Heo * 39023bf6f1STejun Heo * DISCARDS // must be the last 40ef53dae8SSam Ravnborg * } 41ef53dae8SSam Ravnborg * 42ef53dae8SSam Ravnborg * [__init_begin, __init_end] is the init section that may be freed after init 43ef53dae8SSam Ravnborg * [_stext, _etext] is the text section 44ef53dae8SSam Ravnborg * [_sdata, _edata] is the data section 45ef53dae8SSam Ravnborg * 46ef53dae8SSam Ravnborg * Some of the included output section have their own set of constants. 47ef53dae8SSam Ravnborg * Examples are: [__initramfs_start, __initramfs_end] for initramfs and 48ef53dae8SSam Ravnborg * [__nosave_begin, __nosave_end] for the nosave data 49ef53dae8SSam Ravnborg */ 50c80d471aSTim Abbott 511da177e4SLinus Torvalds #ifndef LOAD_OFFSET 521da177e4SLinus Torvalds #define LOAD_OFFSET 0 531da177e4SLinus Torvalds #endif 541da177e4SLinus Torvalds 559e1b9b80SAlan Jenkins #ifndef SYMBOL_PREFIX 569e1b9b80SAlan Jenkins #define VMLINUX_SYMBOL(sym) sym 579e1b9b80SAlan Jenkins #else 589e1b9b80SAlan Jenkins #define PASTE2(x,y) x##y 599e1b9b80SAlan Jenkins #define PASTE(x,y) PASTE2(x,y) 609e1b9b80SAlan Jenkins #define VMLINUX_SYMBOL(sym) PASTE(SYMBOL_PREFIX, sym) 611da177e4SLinus Torvalds #endif 621da177e4SLinus Torvalds 636d30e3a8SSam Ravnborg /* Align . to a 8 byte boundary equals to maximum function alignment. */ 646d30e3a8SSam Ravnborg #define ALIGN_FUNCTION() . = ALIGN(8) 656d30e3a8SSam Ravnborg 6607fca0e5SSam Ravnborg /* 6707fca0e5SSam Ravnborg * Align to a 32 byte boundary equal to the 6807fca0e5SSam Ravnborg * alignment gcc 4.5 uses for a struct 6907fca0e5SSam Ravnborg */ 7007fca0e5SSam Ravnborg #define STRUCT_ALIGN() . = ALIGN(32) 7107fca0e5SSam Ravnborg 72eb8f6890SSam Ravnborg /* The actual configuration determine if the init/exit sections 73eb8f6890SSam Ravnborg * are handled as text/data or they can be discarded (which 74eb8f6890SSam Ravnborg * often happens at runtime) 75eb8f6890SSam Ravnborg */ 76eb8f6890SSam Ravnborg #ifdef CONFIG_HOTPLUG 77eb8f6890SSam Ravnborg #define DEV_KEEP(sec) *(.dev##sec) 78eb8f6890SSam Ravnborg #define DEV_DISCARD(sec) 79eb8f6890SSam Ravnborg #else 80eb8f6890SSam Ravnborg #define DEV_KEEP(sec) 81eb8f6890SSam Ravnborg #define DEV_DISCARD(sec) *(.dev##sec) 82eb8f6890SSam Ravnborg #endif 83eb8f6890SSam Ravnborg 84eb8f6890SSam Ravnborg #ifdef CONFIG_HOTPLUG_CPU 85eb8f6890SSam Ravnborg #define CPU_KEEP(sec) *(.cpu##sec) 86eb8f6890SSam Ravnborg #define CPU_DISCARD(sec) 87eb8f6890SSam Ravnborg #else 88eb8f6890SSam Ravnborg #define CPU_KEEP(sec) 89eb8f6890SSam Ravnborg #define CPU_DISCARD(sec) *(.cpu##sec) 90eb8f6890SSam Ravnborg #endif 91eb8f6890SSam Ravnborg 921a3fb6d4SAdrian Bunk #if defined(CONFIG_MEMORY_HOTPLUG) 93eb8f6890SSam Ravnborg #define MEM_KEEP(sec) *(.mem##sec) 94eb8f6890SSam Ravnborg #define MEM_DISCARD(sec) 95eb8f6890SSam Ravnborg #else 96eb8f6890SSam Ravnborg #define MEM_KEEP(sec) 97eb8f6890SSam Ravnborg #define MEM_DISCARD(sec) *(.mem##sec) 98eb8f6890SSam Ravnborg #endif 99eb8f6890SSam Ravnborg 1008da3821bSSteven Rostedt #ifdef CONFIG_FTRACE_MCOUNT_RECORD 1014b3b4c5eSJohn Reiser #define MCOUNT_REC() . = ALIGN(8); \ 1024b3b4c5eSJohn Reiser VMLINUX_SYMBOL(__start_mcount_loc) = .; \ 1038da3821bSSteven Rostedt *(__mcount_loc) \ 1048da3821bSSteven Rostedt VMLINUX_SYMBOL(__stop_mcount_loc) = .; 1058da3821bSSteven Rostedt #else 1068da3821bSSteven Rostedt #define MCOUNT_REC() 1078da3821bSSteven Rostedt #endif 108eb8f6890SSam Ravnborg 1092ed84eebSSteven Rostedt #ifdef CONFIG_TRACE_BRANCH_PROFILING 11045b79749SSteven Rostedt #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ 11145b79749SSteven Rostedt *(_ftrace_annotated_branch) \ 11245b79749SSteven Rostedt VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; 1131f0d69a9SSteven Rostedt #else 1141f0d69a9SSteven Rostedt #define LIKELY_PROFILE() 1151f0d69a9SSteven Rostedt #endif 1161f0d69a9SSteven Rostedt 1172bcd521aSSteven Rostedt #ifdef CONFIG_PROFILE_ALL_BRANCHES 1182bcd521aSSteven Rostedt #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ 1192bcd521aSSteven Rostedt *(_ftrace_branch) \ 1202bcd521aSSteven Rostedt VMLINUX_SYMBOL(__stop_branch_profile) = .; 1212bcd521aSSteven Rostedt #else 1222bcd521aSSteven Rostedt #define BRANCH_PROFILE() 1232bcd521aSSteven Rostedt #endif 1242bcd521aSSteven Rostedt 1255f77a88bSTom Zanussi #ifdef CONFIG_EVENT_TRACING 126b77e38aaSSteven Rostedt #define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .; \ 127b77e38aaSSteven Rostedt *(_ftrace_events) \ 128b77e38aaSSteven Rostedt VMLINUX_SYMBOL(__stop_ftrace_events) = .; 129b77e38aaSSteven Rostedt #else 130b77e38aaSSteven Rostedt #define FTRACE_EVENTS() 131b77e38aaSSteven Rostedt #endif 132b77e38aaSSteven Rostedt 1331ba28e02SLai Jiangshan #ifdef CONFIG_TRACING 1341ba28e02SLai Jiangshan #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ 1351ba28e02SLai Jiangshan *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \ 1361ba28e02SLai Jiangshan VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; 1371ba28e02SLai Jiangshan #else 1381ba28e02SLai Jiangshan #define TRACE_PRINTKS() 1391ba28e02SLai Jiangshan #endif 1401ba28e02SLai Jiangshan 141bed1ffcaSFrederic Weisbecker #ifdef CONFIG_FTRACE_SYSCALLS 142bed1ffcaSFrederic Weisbecker #define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ 143bed1ffcaSFrederic Weisbecker *(__syscalls_metadata) \ 144bed1ffcaSFrederic Weisbecker VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; 145bed1ffcaSFrederic Weisbecker #else 146bed1ffcaSFrederic Weisbecker #define TRACE_SYSCALLS() 147bed1ffcaSFrederic Weisbecker #endif 148bed1ffcaSFrederic Weisbecker 149ca967258SSam Ravnborg /* .data section */ 150ca967258SSam Ravnborg #define DATA_DATA \ 1510e0d314eSSam Ravnborg *(.data) \ 152312b1485SSam Ravnborg *(.ref.data) \ 153eb8f6890SSam Ravnborg DEV_KEEP(init.data) \ 154eb8f6890SSam Ravnborg DEV_KEEP(exit.data) \ 155eb8f6890SSam Ravnborg CPU_KEEP(init.data) \ 156eb8f6890SSam Ravnborg CPU_KEEP(exit.data) \ 157eb8f6890SSam Ravnborg MEM_KEEP(init.data) \ 158eb8f6890SSam Ravnborg MEM_KEEP(exit.data) \ 1598256e47cSMathieu Desnoyers . = ALIGN(8); \ 1608256e47cSMathieu Desnoyers VMLINUX_SYMBOL(__start___markers) = .; \ 1618256e47cSMathieu Desnoyers *(__markers) \ 16297e1c18eSMathieu Desnoyers VMLINUX_SYMBOL(__stop___markers) = .; \ 1637e066fb8SMathieu Desnoyers . = ALIGN(32); \ 16497e1c18eSMathieu Desnoyers VMLINUX_SYMBOL(__start___tracepoints) = .; \ 16597e1c18eSMathieu Desnoyers *(__tracepoints) \ 1661f0d69a9SSteven Rostedt VMLINUX_SYMBOL(__stop___tracepoints) = .; \ 167e9d376f0SJason Baron /* implement dynamic printk debug */ \ 168e9d376f0SJason Baron . = ALIGN(8); \ 169e9d376f0SJason Baron VMLINUX_SYMBOL(__start___verbose) = .; \ 170e9d376f0SJason Baron *(__verbose) \ 171e9d376f0SJason Baron VMLINUX_SYMBOL(__stop___verbose) = .; \ 1722bcd521aSSteven Rostedt LIKELY_PROFILE() \ 173b77e38aaSSteven Rostedt BRANCH_PROFILE() \ 1748a20d84dSIngo Molnar TRACE_PRINTKS() \ 17507fca0e5SSam Ravnborg \ 17607fca0e5SSam Ravnborg STRUCT_ALIGN(); \ 177bed1ffcaSFrederic Weisbecker FTRACE_EVENTS() \ 17807fca0e5SSam Ravnborg \ 17907fca0e5SSam Ravnborg STRUCT_ALIGN(); \ 180bed1ffcaSFrederic Weisbecker TRACE_SYSCALLS() 181ca967258SSam Ravnborg 182ef53dae8SSam Ravnborg /* 183ef53dae8SSam Ravnborg * Data section helpers 184ef53dae8SSam Ravnborg */ 185ef53dae8SSam Ravnborg #define NOSAVE_DATA \ 186ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 187ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__nosave_begin) = .; \ 18807b3bb1eSDenys Vlasenko *(.data..nosave) \ 189ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 190ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__nosave_end) = .; 191ef53dae8SSam Ravnborg 192ef53dae8SSam Ravnborg #define PAGE_ALIGNED_DATA(page_align) \ 193ef53dae8SSam Ravnborg . = ALIGN(page_align); \ 19475b13483STim Abbott *(.data..page_aligned) 195ef53dae8SSam Ravnborg 196ef53dae8SSam Ravnborg #define READ_MOSTLY_DATA(align) \ 197ef53dae8SSam Ravnborg . = ALIGN(align); \ 19854cb27a7SDenys Vlasenko *(.data..read_mostly) 199ef53dae8SSam Ravnborg 200ef53dae8SSam Ravnborg #define CACHELINE_ALIGNED_DATA(align) \ 201ef53dae8SSam Ravnborg . = ALIGN(align); \ 2024af57b78STim Abbott *(.data..cacheline_aligned) 203ef53dae8SSam Ravnborg 20439a449d9STim Abbott #define INIT_TASK_DATA(align) \ 205ef53dae8SSam Ravnborg . = ALIGN(align); \ 2062af7687fSTim Abbott *(.data..init_task) 207ef53dae8SSam Ravnborg 208ef53dae8SSam Ravnborg /* 209ef53dae8SSam Ravnborg * Read only Data 210ef53dae8SSam Ravnborg */ 211ef53dae8SSam Ravnborg #define RO_DATA_SECTION(align) \ 2124096b46fSSam Ravnborg . = ALIGN((align)); \ 2131da177e4SLinus Torvalds .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ 2146569580dSVivek Goyal VMLINUX_SYMBOL(__start_rodata) = .; \ 2151da177e4SLinus Torvalds *(.rodata) *(.rodata.*) \ 2161da177e4SLinus Torvalds *(__vermagic) /* Kernel version magic */ \ 2178256e47cSMathieu Desnoyers *(__markers_strings) /* Markers: strings */ \ 21897e1c18eSMathieu Desnoyers *(__tracepoints_strings)/* Tracepoints: strings */ \ 2191da177e4SLinus Torvalds } \ 2201da177e4SLinus Torvalds \ 2211da177e4SLinus Torvalds .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ 2221da177e4SLinus Torvalds *(.rodata1) \ 2231da177e4SLinus Torvalds } \ 2241da177e4SLinus Torvalds \ 2256360b1fbSJan Beulich BUG_TABLE \ 2266360b1fbSJan Beulich \ 2271da177e4SLinus Torvalds /* PCI quirks */ \ 2281da177e4SLinus Torvalds .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ 2291da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ 2301da177e4SLinus Torvalds *(.pci_fixup_early) \ 2311da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ 2321da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ 2331da177e4SLinus Torvalds *(.pci_fixup_header) \ 2341da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ 2351da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ 2361da177e4SLinus Torvalds *(.pci_fixup_final) \ 2371da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ 2381da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ 2391da177e4SLinus Torvalds *(.pci_fixup_enable) \ 2401da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ 2411597cacbSAlan Cox VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ 2421597cacbSAlan Cox *(.pci_fixup_resume) \ 2431597cacbSAlan Cox VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ 244e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ 245e1a2a51eSRafael J. Wysocki *(.pci_fixup_resume_early) \ 246e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ 247e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ 248e1a2a51eSRafael J. Wysocki *(.pci_fixup_suspend) \ 249e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ 2501da177e4SLinus Torvalds } \ 2511da177e4SLinus Torvalds \ 2525658c769SDavid Woodhouse /* Built-in firmware blobs */ \ 2535658c769SDavid Woodhouse .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ 2545658c769SDavid Woodhouse VMLINUX_SYMBOL(__start_builtin_fw) = .; \ 2555658c769SDavid Woodhouse *(.builtin_fw) \ 2565658c769SDavid Woodhouse VMLINUX_SYMBOL(__end_builtin_fw) = .; \ 2575658c769SDavid Woodhouse } \ 2585658c769SDavid Woodhouse \ 259394b701cSMatt Porter /* RapidIO route ops */ \ 260e5cabeb3SAlexandre Bounine .rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \ 261058f88d6SAlexandre Bounine VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \ 262058f88d6SAlexandre Bounine *(.rio_switch_ops) \ 263058f88d6SAlexandre Bounine VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \ 264394b701cSMatt Porter } \ 265394b701cSMatt Porter \ 26663687a52SJan Beulich TRACEDATA \ 26763687a52SJan Beulich \ 2681da177e4SLinus Torvalds /* Kernel symbol table: Normal symbols */ \ 2691da177e4SLinus Torvalds __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ 2701da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___ksymtab) = .; \ 2711da177e4SLinus Torvalds *(__ksymtab) \ 2721da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___ksymtab) = .; \ 2731da177e4SLinus Torvalds } \ 2741da177e4SLinus Torvalds \ 2751da177e4SLinus Torvalds /* Kernel symbol table: GPL-only symbols */ \ 2761da177e4SLinus Torvalds __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ 2771da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ 2781da177e4SLinus Torvalds *(__ksymtab_gpl) \ 2791da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ 2801da177e4SLinus Torvalds } \ 2811da177e4SLinus Torvalds \ 282f71d20e9SArjan van de Ven /* Kernel symbol table: Normal unused symbols */ \ 283f71d20e9SArjan van de Ven __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ 284f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ 285f71d20e9SArjan van de Ven *(__ksymtab_unused) \ 286f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ 287f71d20e9SArjan van de Ven } \ 288f71d20e9SArjan van de Ven \ 289f71d20e9SArjan van de Ven /* Kernel symbol table: GPL-only unused symbols */ \ 290f71d20e9SArjan van de Ven __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ 291f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ 292f71d20e9SArjan van de Ven *(__ksymtab_unused_gpl) \ 293f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ 294f71d20e9SArjan van de Ven } \ 295f71d20e9SArjan van de Ven \ 2969f28bb7eSGreg Kroah-Hartman /* Kernel symbol table: GPL-future-only symbols */ \ 2979f28bb7eSGreg Kroah-Hartman __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ 2989f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ 2999f28bb7eSGreg Kroah-Hartman *(__ksymtab_gpl_future) \ 3009f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ 3019f28bb7eSGreg Kroah-Hartman } \ 3029f28bb7eSGreg Kroah-Hartman \ 3031da177e4SLinus Torvalds /* Kernel symbol table: Normal symbols */ \ 3041da177e4SLinus Torvalds __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ 3051da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___kcrctab) = .; \ 3061da177e4SLinus Torvalds *(__kcrctab) \ 3071da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___kcrctab) = .; \ 3081da177e4SLinus Torvalds } \ 3091da177e4SLinus Torvalds \ 3101da177e4SLinus Torvalds /* Kernel symbol table: GPL-only symbols */ \ 3111da177e4SLinus Torvalds __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ 3121da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ 3131da177e4SLinus Torvalds *(__kcrctab_gpl) \ 3141da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ 3151da177e4SLinus Torvalds } \ 3161da177e4SLinus Torvalds \ 317f71d20e9SArjan van de Ven /* Kernel symbol table: Normal unused symbols */ \ 318f71d20e9SArjan van de Ven __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ 319f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ 320f71d20e9SArjan van de Ven *(__kcrctab_unused) \ 321f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ 322f71d20e9SArjan van de Ven } \ 323f71d20e9SArjan van de Ven \ 324f71d20e9SArjan van de Ven /* Kernel symbol table: GPL-only unused symbols */ \ 325f71d20e9SArjan van de Ven __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ 326f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ 327f71d20e9SArjan van de Ven *(__kcrctab_unused_gpl) \ 328f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ 329f71d20e9SArjan van de Ven } \ 330f71d20e9SArjan van de Ven \ 3319f28bb7eSGreg Kroah-Hartman /* Kernel symbol table: GPL-future-only symbols */ \ 3329f28bb7eSGreg Kroah-Hartman __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ 3339f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ 3349f28bb7eSGreg Kroah-Hartman *(__kcrctab_gpl_future) \ 3359f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ 3369f28bb7eSGreg Kroah-Hartman } \ 3379f28bb7eSGreg Kroah-Hartman \ 3381da177e4SLinus Torvalds /* Kernel symbol table: strings */ \ 3391da177e4SLinus Torvalds __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ 3401da177e4SLinus Torvalds *(__ksymtab_strings) \ 3411da177e4SLinus Torvalds } \ 3421da177e4SLinus Torvalds \ 343eb8f6890SSam Ravnborg /* __*init sections */ \ 344eb8f6890SSam Ravnborg __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ 345312b1485SSam Ravnborg *(.ref.rodata) \ 346eb8f6890SSam Ravnborg DEV_KEEP(init.rodata) \ 347eb8f6890SSam Ravnborg DEV_KEEP(exit.rodata) \ 348eb8f6890SSam Ravnborg CPU_KEEP(init.rodata) \ 349eb8f6890SSam Ravnborg CPU_KEEP(exit.rodata) \ 350eb8f6890SSam Ravnborg MEM_KEEP(init.rodata) \ 351eb8f6890SSam Ravnborg MEM_KEEP(exit.rodata) \ 352eb8f6890SSam Ravnborg } \ 353eb8f6890SSam Ravnborg \ 3541da177e4SLinus Torvalds /* Built-in module parameters. */ \ 3551da177e4SLinus Torvalds __param : AT(ADDR(__param) - LOAD_OFFSET) { \ 3561da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___param) = .; \ 3571da177e4SLinus Torvalds *(__param) \ 3581da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___param) = .; \ 359edeed305SArjan van de Ven . = ALIGN((align)); \ 3606569580dSVivek Goyal VMLINUX_SYMBOL(__end_rodata) = .; \ 3617583ddfdSMarcelo Tosatti } \ 3624096b46fSSam Ravnborg . = ALIGN((align)); 3634096b46fSSam Ravnborg 364ef53dae8SSam Ravnborg /* RODATA & RO_DATA provided for backward compatibility. 3654096b46fSSam Ravnborg * All archs are supposed to use RO_DATA() */ 366ef53dae8SSam Ravnborg #define RODATA RO_DATA_SECTION(4096) 367ef53dae8SSam Ravnborg #define RO_DATA(align) RO_DATA_SECTION(align) 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds #define SECURITY_INIT \ 37060bad7faSEric W. Biederman .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ 3711da177e4SLinus Torvalds VMLINUX_SYMBOL(__security_initcall_start) = .; \ 3721da177e4SLinus Torvalds *(.security_initcall.init) \ 3731da177e4SLinus Torvalds VMLINUX_SYMBOL(__security_initcall_end) = .; \ 3741da177e4SLinus Torvalds } 3751da177e4SLinus Torvalds 3767664709bSSam Ravnborg /* .text section. Map to function alignment to avoid address changes 3777664709bSSam Ravnborg * during second ld run in second ld pass when generating System.map */ 3787664709bSSam Ravnborg #define TEXT_TEXT \ 3797664709bSSam Ravnborg ALIGN_FUNCTION(); \ 380fb5e2b37SJan Beulich *(.text.hot) \ 3810e0d314eSSam Ravnborg *(.text) \ 382312b1485SSam Ravnborg *(.ref.text) \ 383eb8f6890SSam Ravnborg DEV_KEEP(init.text) \ 384eb8f6890SSam Ravnborg DEV_KEEP(exit.text) \ 385eb8f6890SSam Ravnborg CPU_KEEP(init.text) \ 386eb8f6890SSam Ravnborg CPU_KEEP(exit.text) \ 387eb8f6890SSam Ravnborg MEM_KEEP(init.text) \ 388fb5e2b37SJan Beulich MEM_KEEP(exit.text) \ 389fb5e2b37SJan Beulich *(.text.unlikely) 390eb8f6890SSam Ravnborg 3917664709bSSam Ravnborg 3926d30e3a8SSam Ravnborg /* sched.text is aling to function alignment to secure we have same 3936d30e3a8SSam Ravnborg * address even at second ld pass when generating System.map */ 3941da177e4SLinus Torvalds #define SCHED_TEXT \ 3956d30e3a8SSam Ravnborg ALIGN_FUNCTION(); \ 3961da177e4SLinus Torvalds VMLINUX_SYMBOL(__sched_text_start) = .; \ 3971da177e4SLinus Torvalds *(.sched.text) \ 3981da177e4SLinus Torvalds VMLINUX_SYMBOL(__sched_text_end) = .; 3991da177e4SLinus Torvalds 4006d30e3a8SSam Ravnborg /* spinlock.text is aling to function alignment to secure we have same 4016d30e3a8SSam Ravnborg * address even at second ld pass when generating System.map */ 4021da177e4SLinus Torvalds #define LOCK_TEXT \ 4036d30e3a8SSam Ravnborg ALIGN_FUNCTION(); \ 4041da177e4SLinus Torvalds VMLINUX_SYMBOL(__lock_text_start) = .; \ 4051da177e4SLinus Torvalds *(.spinlock.text) \ 4061da177e4SLinus Torvalds VMLINUX_SYMBOL(__lock_text_end) = .; 407d0aaff97SPrasanna S Panchamukhi 408d0aaff97SPrasanna S Panchamukhi #define KPROBES_TEXT \ 409d0aaff97SPrasanna S Panchamukhi ALIGN_FUNCTION(); \ 410d0aaff97SPrasanna S Panchamukhi VMLINUX_SYMBOL(__kprobes_text_start) = .; \ 411d0aaff97SPrasanna S Panchamukhi *(.kprobes.text) \ 412d0aaff97SPrasanna S Panchamukhi VMLINUX_SYMBOL(__kprobes_text_end) = .; 413a7d0c210SPaolo 'Blaisorblade' Giarrusso 414a0343e82SFrederic Weisbecker #ifdef CONFIG_FUNCTION_GRAPH_TRACER 415a0343e82SFrederic Weisbecker #define IRQENTRY_TEXT \ 416a0343e82SFrederic Weisbecker ALIGN_FUNCTION(); \ 417a0343e82SFrederic Weisbecker VMLINUX_SYMBOL(__irqentry_text_start) = .; \ 418a0343e82SFrederic Weisbecker *(.irqentry.text) \ 419a0343e82SFrederic Weisbecker VMLINUX_SYMBOL(__irqentry_text_end) = .; 420a0343e82SFrederic Weisbecker #else 421a0343e82SFrederic Weisbecker #define IRQENTRY_TEXT 422a0343e82SFrederic Weisbecker #endif 423a0343e82SFrederic Weisbecker 42437c514e3SSam Ravnborg /* Section used for early init (in .S files) */ 4257923f90fSSam Ravnborg #define HEAD_TEXT *(.head.text) 42637c514e3SSam Ravnborg 4277923f90fSSam Ravnborg #define HEAD_TEXT_SECTION \ 428ef53dae8SSam Ravnborg .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ 429ef53dae8SSam Ravnborg HEAD_TEXT \ 430ef53dae8SSam Ravnborg } 431ef53dae8SSam Ravnborg 432ef53dae8SSam Ravnborg /* 433ef53dae8SSam Ravnborg * Exception table 434ef53dae8SSam Ravnborg */ 435ef53dae8SSam Ravnborg #define EXCEPTION_TABLE(align) \ 436ef53dae8SSam Ravnborg . = ALIGN(align); \ 437ef53dae8SSam Ravnborg __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ 438ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__start___ex_table) = .; \ 439ef53dae8SSam Ravnborg *(__ex_table) \ 440ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__stop___ex_table) = .; \ 441ef53dae8SSam Ravnborg } 442ef53dae8SSam Ravnborg 443ef53dae8SSam Ravnborg /* 444ef53dae8SSam Ravnborg * Init task 445ef53dae8SSam Ravnborg */ 44639a449d9STim Abbott #define INIT_TASK_DATA_SECTION(align) \ 447ef53dae8SSam Ravnborg . = ALIGN(align); \ 448da5e37efSSam Ravnborg .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ 44939a449d9STim Abbott INIT_TASK_DATA(align) \ 450ef53dae8SSam Ravnborg } 451eb8f6890SSam Ravnborg 452b99b87f7SPeter Oberparleiter #ifdef CONFIG_CONSTRUCTORS 4532a2325e6SHeiko Carstens #define KERNEL_CTORS() . = ALIGN(8); \ 4542a2325e6SHeiko Carstens VMLINUX_SYMBOL(__ctors_start) = .; \ 455b99b87f7SPeter Oberparleiter *(.ctors) \ 456b99b87f7SPeter Oberparleiter VMLINUX_SYMBOL(__ctors_end) = .; 457b99b87f7SPeter Oberparleiter #else 458b99b87f7SPeter Oberparleiter #define KERNEL_CTORS() 459b99b87f7SPeter Oberparleiter #endif 460b99b87f7SPeter Oberparleiter 46101ba2bdcSSam Ravnborg /* init and exit section handling */ 462eb8f6890SSam Ravnborg #define INIT_DATA \ 463eb8f6890SSam Ravnborg *(.init.data) \ 464eb8f6890SSam Ravnborg DEV_DISCARD(init.data) \ 465eb8f6890SSam Ravnborg CPU_DISCARD(init.data) \ 466eb8f6890SSam Ravnborg MEM_DISCARD(init.data) \ 467b99b87f7SPeter Oberparleiter KERNEL_CTORS() \ 468fd6c3a8dSJan Beulich *(.init.rodata) \ 4694b3b4c5eSJohn Reiser MCOUNT_REC() \ 470fd6c3a8dSJan Beulich DEV_DISCARD(init.rodata) \ 471fd6c3a8dSJan Beulich CPU_DISCARD(init.rodata) \ 472e9d376f0SJason Baron MEM_DISCARD(init.rodata) 47301ba2bdcSSam Ravnborg 474eb8f6890SSam Ravnborg #define INIT_TEXT \ 475eb8f6890SSam Ravnborg *(.init.text) \ 476eb8f6890SSam Ravnborg DEV_DISCARD(init.text) \ 477eb8f6890SSam Ravnborg CPU_DISCARD(init.text) \ 478eb8f6890SSam Ravnborg MEM_DISCARD(init.text) 479eb8f6890SSam Ravnborg 480eb8f6890SSam Ravnborg #define EXIT_DATA \ 481eb8f6890SSam Ravnborg *(.exit.data) \ 482eb8f6890SSam Ravnborg DEV_DISCARD(exit.data) \ 483eb8f6890SSam Ravnborg DEV_DISCARD(exit.rodata) \ 484eb8f6890SSam Ravnborg CPU_DISCARD(exit.data) \ 485eb8f6890SSam Ravnborg CPU_DISCARD(exit.rodata) \ 486eb8f6890SSam Ravnborg MEM_DISCARD(exit.data) \ 487eb8f6890SSam Ravnborg MEM_DISCARD(exit.rodata) 488eb8f6890SSam Ravnborg 489eb8f6890SSam Ravnborg #define EXIT_TEXT \ 490eb8f6890SSam Ravnborg *(.exit.text) \ 491eb8f6890SSam Ravnborg DEV_DISCARD(exit.text) \ 492eb8f6890SSam Ravnborg CPU_DISCARD(exit.text) \ 493eb8f6890SSam Ravnborg MEM_DISCARD(exit.text) 49401ba2bdcSSam Ravnborg 4957923f90fSSam Ravnborg #define EXIT_CALL \ 4967923f90fSSam Ravnborg *(.exitcall.exit) 4977923f90fSSam Ravnborg 498ef53dae8SSam Ravnborg /* 499ef53dae8SSam Ravnborg * bss (Block Started by Symbol) - uninitialized data 500ef53dae8SSam Ravnborg * zeroed during startup 501ef53dae8SSam Ravnborg */ 50204e448d9STim Abbott #define SBSS(sbss_align) \ 50304e448d9STim Abbott . = ALIGN(sbss_align); \ 504ef53dae8SSam Ravnborg .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ 505ef53dae8SSam Ravnborg *(.sbss) \ 506ef53dae8SSam Ravnborg *(.scommon) \ 507ef53dae8SSam Ravnborg } 508ef53dae8SSam Ravnborg 509ef53dae8SSam Ravnborg #define BSS(bss_align) \ 510ef53dae8SSam Ravnborg . = ALIGN(bss_align); \ 511ef53dae8SSam Ravnborg .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ 5127c74df07STim Abbott *(.bss..page_aligned) \ 513ef53dae8SSam Ravnborg *(.dynbss) \ 514ef53dae8SSam Ravnborg *(.bss) \ 515ef53dae8SSam Ravnborg *(COMMON) \ 516ef53dae8SSam Ravnborg } 517ef53dae8SSam Ravnborg 518ef53dae8SSam Ravnborg /* 519ef53dae8SSam Ravnborg * DWARF debug sections. 520ef53dae8SSam Ravnborg * Symbols in the DWARF debugging sections are relative to 521ef53dae8SSam Ravnborg * the beginning of the section so we begin them at 0. 522ef53dae8SSam Ravnborg */ 523a7d0c210SPaolo 'Blaisorblade' Giarrusso #define DWARF_DEBUG \ 524a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 1 */ \ 525a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug 0 : { *(.debug) } \ 526a7d0c210SPaolo 'Blaisorblade' Giarrusso .line 0 : { *(.line) } \ 527a7d0c210SPaolo 'Blaisorblade' Giarrusso /* GNU DWARF 1 extensions */ \ 528a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_srcinfo 0 : { *(.debug_srcinfo) } \ 529a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_sfnames 0 : { *(.debug_sfnames) } \ 530a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 1.1 and DWARF 2 */ \ 531a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_aranges 0 : { *(.debug_aranges) } \ 532a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_pubnames 0 : { *(.debug_pubnames) } \ 533a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 2 */ \ 534a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_info 0 : { *(.debug_info \ 535a7d0c210SPaolo 'Blaisorblade' Giarrusso .gnu.linkonce.wi.*) } \ 536a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_abbrev 0 : { *(.debug_abbrev) } \ 537a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_line 0 : { *(.debug_line) } \ 538a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_frame 0 : { *(.debug_frame) } \ 539a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_str 0 : { *(.debug_str) } \ 540a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_loc 0 : { *(.debug_loc) } \ 541a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_macinfo 0 : { *(.debug_macinfo) } \ 542a7d0c210SPaolo 'Blaisorblade' Giarrusso /* SGI/MIPS DWARF 2 extensions */ \ 543a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_weaknames 0 : { *(.debug_weaknames) } \ 544a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_funcnames 0 : { *(.debug_funcnames) } \ 545a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_typenames 0 : { *(.debug_typenames) } \ 546a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_varnames 0 : { *(.debug_varnames) } \ 547a7d0c210SPaolo 'Blaisorblade' Giarrusso 548a7d0c210SPaolo 'Blaisorblade' Giarrusso /* Stabs debugging sections. */ 549a7d0c210SPaolo 'Blaisorblade' Giarrusso #define STABS_DEBUG \ 550a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab 0 : { *(.stab) } \ 551a7d0c210SPaolo 'Blaisorblade' Giarrusso .stabstr 0 : { *(.stabstr) } \ 552a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.excl 0 : { *(.stab.excl) } \ 553a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.exclstr 0 : { *(.stab.exclstr) } \ 554a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.index 0 : { *(.stab.index) } \ 555a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.indexstr 0 : { *(.stab.indexstr) } \ 556a7d0c210SPaolo 'Blaisorblade' Giarrusso .comment 0 : { *(.comment) } 5579c9b8b38SJeremy Fitzhardinge 5586360b1fbSJan Beulich #ifdef CONFIG_GENERIC_BUG 5597664c5a1SJeremy Fitzhardinge #define BUG_TABLE \ 5607664c5a1SJeremy Fitzhardinge . = ALIGN(8); \ 5617664c5a1SJeremy Fitzhardinge __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ 562c6de0026SYoshinori Sato VMLINUX_SYMBOL(__start___bug_table) = .; \ 5637664c5a1SJeremy Fitzhardinge *(__bug_table) \ 564c6de0026SYoshinori Sato VMLINUX_SYMBOL(__stop___bug_table) = .; \ 5657664c5a1SJeremy Fitzhardinge } 5666360b1fbSJan Beulich #else 5676360b1fbSJan Beulich #define BUG_TABLE 5686360b1fbSJan Beulich #endif 5697664c5a1SJeremy Fitzhardinge 57063687a52SJan Beulich #ifdef CONFIG_PM_TRACE 57163687a52SJan Beulich #define TRACEDATA \ 57263687a52SJan Beulich . = ALIGN(4); \ 57363687a52SJan Beulich .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ 574c6de0026SYoshinori Sato VMLINUX_SYMBOL(__tracedata_start) = .; \ 57563687a52SJan Beulich *(.tracedata) \ 576c6de0026SYoshinori Sato VMLINUX_SYMBOL(__tracedata_end) = .; \ 57763687a52SJan Beulich } 57863687a52SJan Beulich #else 57963687a52SJan Beulich #define TRACEDATA 58063687a52SJan Beulich #endif 58163687a52SJan Beulich 5829c9b8b38SJeremy Fitzhardinge #define NOTES \ 583cbe87121SRoland McGrath .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ 584cbe87121SRoland McGrath VMLINUX_SYMBOL(__start_notes) = .; \ 585cbe87121SRoland McGrath *(.note.*) \ 586cbe87121SRoland McGrath VMLINUX_SYMBOL(__stop_notes) = .; \ 587cbe87121SRoland McGrath } 58861ce1efeSAndrew Morton 589ef53dae8SSam Ravnborg #define INIT_SETUP(initsetup_align) \ 590ef53dae8SSam Ravnborg . = ALIGN(initsetup_align); \ 591ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__setup_start) = .; \ 592ef53dae8SSam Ravnborg *(.init.setup) \ 593ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__setup_end) = .; 594ef53dae8SSam Ravnborg 59561ce1efeSAndrew Morton #define INITCALLS \ 596c2147a50SEduard - Gabriel Munteanu *(.initcallearly.init) \ 597c6de0026SYoshinori Sato VMLINUX_SYMBOL(__early_initcall_end) = .; \ 598b3438f82SLinus Torvalds *(.initcall0.init) \ 599b3438f82SLinus Torvalds *(.initcall0s.init) \ 60061ce1efeSAndrew Morton *(.initcall1.init) \ 601735a7ffbSAndrew Morton *(.initcall1s.init) \ 60261ce1efeSAndrew Morton *(.initcall2.init) \ 603735a7ffbSAndrew Morton *(.initcall2s.init) \ 60461ce1efeSAndrew Morton *(.initcall3.init) \ 605735a7ffbSAndrew Morton *(.initcall3s.init) \ 60661ce1efeSAndrew Morton *(.initcall4.init) \ 607735a7ffbSAndrew Morton *(.initcall4s.init) \ 60861ce1efeSAndrew Morton *(.initcall5.init) \ 609735a7ffbSAndrew Morton *(.initcall5s.init) \ 6108d610dd5SLinus Torvalds *(.initcallrootfs.init) \ 61161ce1efeSAndrew Morton *(.initcall6.init) \ 612735a7ffbSAndrew Morton *(.initcall6s.init) \ 613735a7ffbSAndrew Morton *(.initcall7.init) \ 614735a7ffbSAndrew Morton *(.initcall7s.init) 61561ce1efeSAndrew Morton 616ef53dae8SSam Ravnborg #define INIT_CALLS \ 617ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initcall_start) = .; \ 618ef53dae8SSam Ravnborg INITCALLS \ 619ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initcall_end) = .; 620ef53dae8SSam Ravnborg 621ef53dae8SSam Ravnborg #define CON_INITCALL \ 622ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__con_initcall_start) = .; \ 623ef53dae8SSam Ravnborg *(.con_initcall.init) \ 624ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__con_initcall_end) = .; 625ef53dae8SSam Ravnborg 626ef53dae8SSam Ravnborg #define SECURITY_INITCALL \ 627ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__security_initcall_start) = .; \ 628ef53dae8SSam Ravnborg *(.security_initcall.init) \ 629ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__security_initcall_end) = .; 630ef53dae8SSam Ravnborg 631ef53dae8SSam Ravnborg #ifdef CONFIG_BLK_DEV_INITRD 632ef53dae8SSam Ravnborg #define INIT_RAM_FS \ 633ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 634ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initramfs_start) = .; \ 635ef53dae8SSam Ravnborg *(.init.ramfs) \ 636ffe8018cSHendrik Brueckner . = ALIGN(8); \ 637ffe8018cSHendrik Brueckner *(.init.ramfs.info) 638ef53dae8SSam Ravnborg #else 639eadfe219SDavid Howells #define INIT_RAM_FS 640ef53dae8SSam Ravnborg #endif 641ef53dae8SSam Ravnborg 642023bf6f1STejun Heo /* 643023bf6f1STejun Heo * Default discarded sections. 644023bf6f1STejun Heo * 645023bf6f1STejun Heo * Some archs want to discard exit text/data at runtime rather than 646023bf6f1STejun Heo * link time due to cross-section references such as alt instructions, 647023bf6f1STejun Heo * bug table, eh_frame, etc. DISCARDS must be the last of output 648023bf6f1STejun Heo * section definitions so that such archs put those in earlier section 649023bf6f1STejun Heo * definitions. 650023bf6f1STejun Heo */ 651405d967dSTejun Heo #define DISCARDS \ 652405d967dSTejun Heo /DISCARD/ : { \ 653405d967dSTejun Heo EXIT_TEXT \ 654405d967dSTejun Heo EXIT_DATA \ 655023bf6f1STejun Heo EXIT_CALL \ 656405d967dSTejun Heo *(.discard) \ 657405d967dSTejun Heo } 658405d967dSTejun Heo 6593e5d8f97STejun Heo /** 6606b7c38d5STejun Heo * PERCPU_VADDR - define output section for percpu area 6613e5d8f97STejun Heo * @vaddr: explicit base address (optional) 6623e5d8f97STejun Heo * @phdr: destination PHDR (optional) 6633e5d8f97STejun Heo * 6643e5d8f97STejun Heo * Macro which expands to output section for percpu area. If @vaddr 6653e5d8f97STejun Heo * is not blank, it specifies explicit base address and all percpu 6663e5d8f97STejun Heo * symbols will be offset from the given address. If blank, @vaddr 6673e5d8f97STejun Heo * always equals @laddr + LOAD_OFFSET. 6683e5d8f97STejun Heo * 6693e5d8f97STejun Heo * @phdr defines the output PHDR to use if not blank. Be warned that 6703e5d8f97STejun Heo * output PHDR is sticky. If @phdr is specified, the next output 6713e5d8f97STejun Heo * section in the linker script will go there too. @phdr should have 6723e5d8f97STejun Heo * a leading colon. 6733e5d8f97STejun Heo * 6743ac6cffeSTejun Heo * Note that this macros defines __per_cpu_load as an absolute symbol. 6753ac6cffeSTejun Heo * If there is no need to put the percpu section at a predetermined 6763ac6cffeSTejun Heo * address, use PERCPU(). 6773e5d8f97STejun Heo */ 6783e5d8f97STejun Heo #define PERCPU_VADDR(vaddr, phdr) \ 679dba3d36bSIngo Molnar VMLINUX_SYMBOL(__per_cpu_load) = .; \ 6803d9a854cSDenys Vlasenko .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ 6816b7c38d5STejun Heo - LOAD_OFFSET) { \ 682c6de0026SYoshinori Sato VMLINUX_SYMBOL(__per_cpu_start) = .; \ 6833d9a854cSDenys Vlasenko *(.data..percpu..first) \ 6843d9a854cSDenys Vlasenko *(.data..percpu..page_aligned) \ 6853d9a854cSDenys Vlasenko *(.data..percpu) \ 6863d9a854cSDenys Vlasenko *(.data..percpu..shared_aligned) \ 6876b7c38d5STejun Heo VMLINUX_SYMBOL(__per_cpu_end) = .; \ 6886b7c38d5STejun Heo } phdr \ 6893d9a854cSDenys Vlasenko . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); 6903e5d8f97STejun Heo 6913e5d8f97STejun Heo /** 6923e5d8f97STejun Heo * PERCPU - define output section for percpu area, simple version 6933e5d8f97STejun Heo * @align: required alignment 6943e5d8f97STejun Heo * 6953e5d8f97STejun Heo * Align to @align and outputs output section for percpu area. This 6963e5d8f97STejun Heo * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and 6973e5d8f97STejun Heo * __per_cpu_start will be identical. 6983ac6cffeSTejun Heo * 6993ac6cffeSTejun Heo * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except 7003ac6cffeSTejun Heo * that __per_cpu_load is defined as a relative symbol against 7013d9a854cSDenys Vlasenko * .data..percpu which is required for relocatable x86_32 7023ac6cffeSTejun Heo * configuration. 7033e5d8f97STejun Heo */ 7043e5d8f97STejun Heo #define PERCPU(align) \ 7053e5d8f97STejun Heo . = ALIGN(align); \ 7063d9a854cSDenys Vlasenko .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ 7073ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_load) = .; \ 7083ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_start) = .; \ 7093d9a854cSDenys Vlasenko *(.data..percpu..first) \ 7103d9a854cSDenys Vlasenko *(.data..percpu..page_aligned) \ 7113d9a854cSDenys Vlasenko *(.data..percpu) \ 7123d9a854cSDenys Vlasenko *(.data..percpu..shared_aligned) \ 7133ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_end) = .; \ 7143ac6cffeSTejun Heo } 715ef53dae8SSam Ravnborg 716ef53dae8SSam Ravnborg 717ef53dae8SSam Ravnborg /* 718ef53dae8SSam Ravnborg * Definition of the high level *_SECTION macros 719ef53dae8SSam Ravnborg * They will fit only a subset of the architectures 720ef53dae8SSam Ravnborg */ 721ef53dae8SSam Ravnborg 722ef53dae8SSam Ravnborg 723ef53dae8SSam Ravnborg /* 724ef53dae8SSam Ravnborg * Writeable data. 725ef53dae8SSam Ravnborg * All sections are combined in a single .data section. 726ef53dae8SSam Ravnborg * The sections following CONSTRUCTORS are arranged so their 727ef53dae8SSam Ravnborg * typical alignment matches. 728ef53dae8SSam Ravnborg * A cacheline is typical/always less than a PAGE_SIZE so 729ef53dae8SSam Ravnborg * the sections that has this restriction (or similar) 730ef53dae8SSam Ravnborg * is located before the ones requiring PAGE_SIZE alignment. 731ef53dae8SSam Ravnborg * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which 732ef53dae8SSam Ravnborg * matches the requirment of PAGE_ALIGNED_DATA. 733ef53dae8SSam Ravnborg * 7347923f90fSSam Ravnborg * use 0 as page_align if page_aligned data is not used */ 73573f1d939SPaul Mundt #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ 736ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 737ef53dae8SSam Ravnborg .data : AT(ADDR(.data) - LOAD_OFFSET) { \ 73839a449d9STim Abbott INIT_TASK_DATA(inittask) \ 7391b208622STim Abbott NOSAVE_DATA \ 7401b208622STim Abbott PAGE_ALIGNED_DATA(pagealigned) \ 741ef53dae8SSam Ravnborg CACHELINE_ALIGNED_DATA(cacheline) \ 742ef53dae8SSam Ravnborg READ_MOSTLY_DATA(cacheline) \ 743ef53dae8SSam Ravnborg DATA_DATA \ 744ef53dae8SSam Ravnborg CONSTRUCTORS \ 745ef53dae8SSam Ravnborg } 746ef53dae8SSam Ravnborg 747ef53dae8SSam Ravnborg #define INIT_TEXT_SECTION(inittext_align) \ 748ef53dae8SSam Ravnborg . = ALIGN(inittext_align); \ 749ef53dae8SSam Ravnborg .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ 750ef53dae8SSam Ravnborg VMLINUX_SYMBOL(_sinittext) = .; \ 751ef53dae8SSam Ravnborg INIT_TEXT \ 752ef53dae8SSam Ravnborg VMLINUX_SYMBOL(_einittext) = .; \ 753ef53dae8SSam Ravnborg } 754ef53dae8SSam Ravnborg 755ef53dae8SSam Ravnborg #define INIT_DATA_SECTION(initsetup_align) \ 756ef53dae8SSam Ravnborg .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ 757ef53dae8SSam Ravnborg INIT_DATA \ 758ef53dae8SSam Ravnborg INIT_SETUP(initsetup_align) \ 759ef53dae8SSam Ravnborg INIT_CALLS \ 760ef53dae8SSam Ravnborg CON_INITCALL \ 761ef53dae8SSam Ravnborg SECURITY_INITCALL \ 762ef53dae8SSam Ravnborg INIT_RAM_FS \ 763ef53dae8SSam Ravnborg } 764ef53dae8SSam Ravnborg 76504e448d9STim Abbott #define BSS_SECTION(sbss_align, bss_align, stop_align) \ 76604e448d9STim Abbott . = ALIGN(sbss_align); \ 76704e448d9STim Abbott VMLINUX_SYMBOL(__bss_start) = .; \ 76804e448d9STim Abbott SBSS(sbss_align) \ 769ef53dae8SSam Ravnborg BSS(bss_align) \ 77004e448d9STim Abbott . = ALIGN(stop_align); \ 77104e448d9STim Abbott VMLINUX_SYMBOL(__bss_stop) = .; 772