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 66eb8f6890SSam Ravnborg /* The actual configuration determine if the init/exit sections 67eb8f6890SSam Ravnborg * are handled as text/data or they can be discarded (which 68eb8f6890SSam Ravnborg * often happens at runtime) 69eb8f6890SSam Ravnborg */ 70eb8f6890SSam Ravnborg #ifdef CONFIG_HOTPLUG 71eb8f6890SSam Ravnborg #define DEV_KEEP(sec) *(.dev##sec) 72eb8f6890SSam Ravnborg #define DEV_DISCARD(sec) 73eb8f6890SSam Ravnborg #else 74eb8f6890SSam Ravnborg #define DEV_KEEP(sec) 75eb8f6890SSam Ravnborg #define DEV_DISCARD(sec) *(.dev##sec) 76eb8f6890SSam Ravnborg #endif 77eb8f6890SSam Ravnborg 78eb8f6890SSam Ravnborg #ifdef CONFIG_HOTPLUG_CPU 79eb8f6890SSam Ravnborg #define CPU_KEEP(sec) *(.cpu##sec) 80eb8f6890SSam Ravnborg #define CPU_DISCARD(sec) 81eb8f6890SSam Ravnborg #else 82eb8f6890SSam Ravnborg #define CPU_KEEP(sec) 83eb8f6890SSam Ravnborg #define CPU_DISCARD(sec) *(.cpu##sec) 84eb8f6890SSam Ravnborg #endif 85eb8f6890SSam Ravnborg 861a3fb6d4SAdrian Bunk #if defined(CONFIG_MEMORY_HOTPLUG) 87eb8f6890SSam Ravnborg #define MEM_KEEP(sec) *(.mem##sec) 88eb8f6890SSam Ravnborg #define MEM_DISCARD(sec) 89eb8f6890SSam Ravnborg #else 90eb8f6890SSam Ravnborg #define MEM_KEEP(sec) 91eb8f6890SSam Ravnborg #define MEM_DISCARD(sec) *(.mem##sec) 92eb8f6890SSam Ravnborg #endif 93eb8f6890SSam Ravnborg 948da3821bSSteven Rostedt #ifdef CONFIG_FTRACE_MCOUNT_RECORD 954b3b4c5eSJohn Reiser #define MCOUNT_REC() . = ALIGN(8); \ 964b3b4c5eSJohn Reiser VMLINUX_SYMBOL(__start_mcount_loc) = .; \ 978da3821bSSteven Rostedt *(__mcount_loc) \ 988da3821bSSteven Rostedt VMLINUX_SYMBOL(__stop_mcount_loc) = .; 998da3821bSSteven Rostedt #else 1008da3821bSSteven Rostedt #define MCOUNT_REC() 1018da3821bSSteven Rostedt #endif 102eb8f6890SSam Ravnborg 1032ed84eebSSteven Rostedt #ifdef CONFIG_TRACE_BRANCH_PROFILING 10445b79749SSteven Rostedt #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ 10545b79749SSteven Rostedt *(_ftrace_annotated_branch) \ 10645b79749SSteven Rostedt VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; 1071f0d69a9SSteven Rostedt #else 1081f0d69a9SSteven Rostedt #define LIKELY_PROFILE() 1091f0d69a9SSteven Rostedt #endif 1101f0d69a9SSteven Rostedt 1112bcd521aSSteven Rostedt #ifdef CONFIG_PROFILE_ALL_BRANCHES 1122bcd521aSSteven Rostedt #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ 1132bcd521aSSteven Rostedt *(_ftrace_branch) \ 1142bcd521aSSteven Rostedt VMLINUX_SYMBOL(__stop_branch_profile) = .; 1152bcd521aSSteven Rostedt #else 1162bcd521aSSteven Rostedt #define BRANCH_PROFILE() 1172bcd521aSSteven Rostedt #endif 1182bcd521aSSteven Rostedt 1195f77a88bSTom Zanussi #ifdef CONFIG_EVENT_TRACING 120b77e38aaSSteven Rostedt #define FTRACE_EVENTS() VMLINUX_SYMBOL(__start_ftrace_events) = .; \ 121b77e38aaSSteven Rostedt *(_ftrace_events) \ 122b77e38aaSSteven Rostedt VMLINUX_SYMBOL(__stop_ftrace_events) = .; 123b77e38aaSSteven Rostedt #else 124b77e38aaSSteven Rostedt #define FTRACE_EVENTS() 125b77e38aaSSteven Rostedt #endif 126b77e38aaSSteven Rostedt 1271ba28e02SLai Jiangshan #ifdef CONFIG_TRACING 1281ba28e02SLai Jiangshan #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ 1291ba28e02SLai Jiangshan *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \ 1301ba28e02SLai Jiangshan VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; 1311ba28e02SLai Jiangshan #else 1321ba28e02SLai Jiangshan #define TRACE_PRINTKS() 1331ba28e02SLai Jiangshan #endif 1341ba28e02SLai Jiangshan 135bed1ffcaSFrederic Weisbecker #ifdef CONFIG_FTRACE_SYSCALLS 136bed1ffcaSFrederic Weisbecker #define TRACE_SYSCALLS() VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ 137bed1ffcaSFrederic Weisbecker *(__syscalls_metadata) \ 138bed1ffcaSFrederic Weisbecker VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; 139bed1ffcaSFrederic Weisbecker #else 140bed1ffcaSFrederic Weisbecker #define TRACE_SYSCALLS() 141bed1ffcaSFrederic Weisbecker #endif 142bed1ffcaSFrederic Weisbecker 143ca967258SSam Ravnborg /* .data section */ 144ca967258SSam Ravnborg #define DATA_DATA \ 1450e0d314eSSam Ravnborg *(.data) \ 146312b1485SSam Ravnborg *(.ref.data) \ 147eb8f6890SSam Ravnborg DEV_KEEP(init.data) \ 148eb8f6890SSam Ravnborg DEV_KEEP(exit.data) \ 149eb8f6890SSam Ravnborg CPU_KEEP(init.data) \ 150eb8f6890SSam Ravnborg CPU_KEEP(exit.data) \ 151eb8f6890SSam Ravnborg MEM_KEEP(init.data) \ 152eb8f6890SSam Ravnborg MEM_KEEP(exit.data) \ 1538256e47cSMathieu Desnoyers . = ALIGN(8); \ 1548256e47cSMathieu Desnoyers VMLINUX_SYMBOL(__start___markers) = .; \ 1558256e47cSMathieu Desnoyers *(__markers) \ 15697e1c18eSMathieu Desnoyers VMLINUX_SYMBOL(__stop___markers) = .; \ 1577e066fb8SMathieu Desnoyers . = ALIGN(32); \ 15897e1c18eSMathieu Desnoyers VMLINUX_SYMBOL(__start___tracepoints) = .; \ 15997e1c18eSMathieu Desnoyers *(__tracepoints) \ 1601f0d69a9SSteven Rostedt VMLINUX_SYMBOL(__stop___tracepoints) = .; \ 161e9d376f0SJason Baron /* implement dynamic printk debug */ \ 162e9d376f0SJason Baron . = ALIGN(8); \ 163e9d376f0SJason Baron VMLINUX_SYMBOL(__start___verbose) = .; \ 164e9d376f0SJason Baron *(__verbose) \ 165e9d376f0SJason Baron VMLINUX_SYMBOL(__stop___verbose) = .; \ 1662bcd521aSSteven Rostedt LIKELY_PROFILE() \ 167b77e38aaSSteven Rostedt BRANCH_PROFILE() \ 1688a20d84dSIngo Molnar TRACE_PRINTKS() \ 169bed1ffcaSFrederic Weisbecker FTRACE_EVENTS() \ 170bed1ffcaSFrederic Weisbecker TRACE_SYSCALLS() 171ca967258SSam Ravnborg 172ef53dae8SSam Ravnborg /* 173ef53dae8SSam Ravnborg * Data section helpers 174ef53dae8SSam Ravnborg */ 175ef53dae8SSam Ravnborg #define NOSAVE_DATA \ 176ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 177ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__nosave_begin) = .; \ 17807b3bb1eSDenys Vlasenko *(.data..nosave) \ 179ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 180ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__nosave_end) = .; 181ef53dae8SSam Ravnborg 182ef53dae8SSam Ravnborg #define PAGE_ALIGNED_DATA(page_align) \ 183ef53dae8SSam Ravnborg . = ALIGN(page_align); \ 18475b13483STim Abbott *(.data..page_aligned) 185ef53dae8SSam Ravnborg 186ef53dae8SSam Ravnborg #define READ_MOSTLY_DATA(align) \ 187ef53dae8SSam Ravnborg . = ALIGN(align); \ 18854cb27a7SDenys Vlasenko *(.data..read_mostly) 189ef53dae8SSam Ravnborg 190ef53dae8SSam Ravnborg #define CACHELINE_ALIGNED_DATA(align) \ 191ef53dae8SSam Ravnborg . = ALIGN(align); \ 1924af57b78STim Abbott *(.data..cacheline_aligned) 193ef53dae8SSam Ravnborg 19439a449d9STim Abbott #define INIT_TASK_DATA(align) \ 195ef53dae8SSam Ravnborg . = ALIGN(align); \ 1962af7687fSTim Abbott *(.data..init_task) 197ef53dae8SSam Ravnborg 198ef53dae8SSam Ravnborg /* 199ef53dae8SSam Ravnborg * Read only Data 200ef53dae8SSam Ravnborg */ 201ef53dae8SSam Ravnborg #define RO_DATA_SECTION(align) \ 2024096b46fSSam Ravnborg . = ALIGN((align)); \ 2031da177e4SLinus Torvalds .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ 2046569580dSVivek Goyal VMLINUX_SYMBOL(__start_rodata) = .; \ 2051da177e4SLinus Torvalds *(.rodata) *(.rodata.*) \ 2061da177e4SLinus Torvalds *(__vermagic) /* Kernel version magic */ \ 2078256e47cSMathieu Desnoyers *(__markers_strings) /* Markers: strings */ \ 20897e1c18eSMathieu Desnoyers *(__tracepoints_strings)/* Tracepoints: strings */ \ 2091da177e4SLinus Torvalds } \ 2101da177e4SLinus Torvalds \ 2111da177e4SLinus Torvalds .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ 2121da177e4SLinus Torvalds *(.rodata1) \ 2131da177e4SLinus Torvalds } \ 2141da177e4SLinus Torvalds \ 2156360b1fbSJan Beulich BUG_TABLE \ 2166360b1fbSJan Beulich \ 2171da177e4SLinus Torvalds /* PCI quirks */ \ 2181da177e4SLinus Torvalds .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ 2191da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ 2201da177e4SLinus Torvalds *(.pci_fixup_early) \ 2211da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ 2221da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ 2231da177e4SLinus Torvalds *(.pci_fixup_header) \ 2241da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ 2251da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ 2261da177e4SLinus Torvalds *(.pci_fixup_final) \ 2271da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ 2281da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ 2291da177e4SLinus Torvalds *(.pci_fixup_enable) \ 2301da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ 2311597cacbSAlan Cox VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ 2321597cacbSAlan Cox *(.pci_fixup_resume) \ 2331597cacbSAlan Cox VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ 234e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ 235e1a2a51eSRafael J. Wysocki *(.pci_fixup_resume_early) \ 236e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ 237e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ 238e1a2a51eSRafael J. Wysocki *(.pci_fixup_suspend) \ 239e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ 2401da177e4SLinus Torvalds } \ 2411da177e4SLinus Torvalds \ 2425658c769SDavid Woodhouse /* Built-in firmware blobs */ \ 2435658c769SDavid Woodhouse .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ 2445658c769SDavid Woodhouse VMLINUX_SYMBOL(__start_builtin_fw) = .; \ 2455658c769SDavid Woodhouse *(.builtin_fw) \ 2465658c769SDavid Woodhouse VMLINUX_SYMBOL(__end_builtin_fw) = .; \ 2475658c769SDavid Woodhouse } \ 2485658c769SDavid Woodhouse \ 249394b701cSMatt Porter /* RapidIO route ops */ \ 250e5cabeb3SAlexandre Bounine .rio_ops : AT(ADDR(.rio_ops) - LOAD_OFFSET) { \ 251058f88d6SAlexandre Bounine VMLINUX_SYMBOL(__start_rio_switch_ops) = .; \ 252058f88d6SAlexandre Bounine *(.rio_switch_ops) \ 253058f88d6SAlexandre Bounine VMLINUX_SYMBOL(__end_rio_switch_ops) = .; \ 254394b701cSMatt Porter } \ 255394b701cSMatt Porter \ 25663687a52SJan Beulich TRACEDATA \ 25763687a52SJan Beulich \ 2581da177e4SLinus Torvalds /* Kernel symbol table: Normal symbols */ \ 2591da177e4SLinus Torvalds __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ 2601da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___ksymtab) = .; \ 2611da177e4SLinus Torvalds *(__ksymtab) \ 2621da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___ksymtab) = .; \ 2631da177e4SLinus Torvalds } \ 2641da177e4SLinus Torvalds \ 2651da177e4SLinus Torvalds /* Kernel symbol table: GPL-only symbols */ \ 2661da177e4SLinus Torvalds __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ 2671da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ 2681da177e4SLinus Torvalds *(__ksymtab_gpl) \ 2691da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ 2701da177e4SLinus Torvalds } \ 2711da177e4SLinus Torvalds \ 272f71d20e9SArjan van de Ven /* Kernel symbol table: Normal unused symbols */ \ 273f71d20e9SArjan van de Ven __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ 274f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ 275f71d20e9SArjan van de Ven *(__ksymtab_unused) \ 276f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ 277f71d20e9SArjan van de Ven } \ 278f71d20e9SArjan van de Ven \ 279f71d20e9SArjan van de Ven /* Kernel symbol table: GPL-only unused symbols */ \ 280f71d20e9SArjan van de Ven __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ 281f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ 282f71d20e9SArjan van de Ven *(__ksymtab_unused_gpl) \ 283f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ 284f71d20e9SArjan van de Ven } \ 285f71d20e9SArjan van de Ven \ 2869f28bb7eSGreg Kroah-Hartman /* Kernel symbol table: GPL-future-only symbols */ \ 2879f28bb7eSGreg Kroah-Hartman __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ 2889f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ 2899f28bb7eSGreg Kroah-Hartman *(__ksymtab_gpl_future) \ 2909f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ 2919f28bb7eSGreg Kroah-Hartman } \ 2929f28bb7eSGreg Kroah-Hartman \ 2931da177e4SLinus Torvalds /* Kernel symbol table: Normal symbols */ \ 2941da177e4SLinus Torvalds __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ 2951da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___kcrctab) = .; \ 2961da177e4SLinus Torvalds *(__kcrctab) \ 2971da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___kcrctab) = .; \ 2981da177e4SLinus Torvalds } \ 2991da177e4SLinus Torvalds \ 3001da177e4SLinus Torvalds /* Kernel symbol table: GPL-only symbols */ \ 3011da177e4SLinus Torvalds __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ 3021da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ 3031da177e4SLinus Torvalds *(__kcrctab_gpl) \ 3041da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ 3051da177e4SLinus Torvalds } \ 3061da177e4SLinus Torvalds \ 307f71d20e9SArjan van de Ven /* Kernel symbol table: Normal unused symbols */ \ 308f71d20e9SArjan van de Ven __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ 309f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ 310f71d20e9SArjan van de Ven *(__kcrctab_unused) \ 311f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ 312f71d20e9SArjan van de Ven } \ 313f71d20e9SArjan van de Ven \ 314f71d20e9SArjan van de Ven /* Kernel symbol table: GPL-only unused symbols */ \ 315f71d20e9SArjan van de Ven __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ 316f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ 317f71d20e9SArjan van de Ven *(__kcrctab_unused_gpl) \ 318f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ 319f71d20e9SArjan van de Ven } \ 320f71d20e9SArjan van de Ven \ 3219f28bb7eSGreg Kroah-Hartman /* Kernel symbol table: GPL-future-only symbols */ \ 3229f28bb7eSGreg Kroah-Hartman __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ 3239f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ 3249f28bb7eSGreg Kroah-Hartman *(__kcrctab_gpl_future) \ 3259f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ 3269f28bb7eSGreg Kroah-Hartman } \ 3279f28bb7eSGreg Kroah-Hartman \ 3281da177e4SLinus Torvalds /* Kernel symbol table: strings */ \ 3291da177e4SLinus Torvalds __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ 3301da177e4SLinus Torvalds *(__ksymtab_strings) \ 3311da177e4SLinus Torvalds } \ 3321da177e4SLinus Torvalds \ 333eb8f6890SSam Ravnborg /* __*init sections */ \ 334eb8f6890SSam Ravnborg __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ 335312b1485SSam Ravnborg *(.ref.rodata) \ 336eb8f6890SSam Ravnborg DEV_KEEP(init.rodata) \ 337eb8f6890SSam Ravnborg DEV_KEEP(exit.rodata) \ 338eb8f6890SSam Ravnborg CPU_KEEP(init.rodata) \ 339eb8f6890SSam Ravnborg CPU_KEEP(exit.rodata) \ 340eb8f6890SSam Ravnborg MEM_KEEP(init.rodata) \ 341eb8f6890SSam Ravnborg MEM_KEEP(exit.rodata) \ 342eb8f6890SSam Ravnborg } \ 343eb8f6890SSam Ravnborg \ 3441da177e4SLinus Torvalds /* Built-in module parameters. */ \ 3451da177e4SLinus Torvalds __param : AT(ADDR(__param) - LOAD_OFFSET) { \ 3461da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___param) = .; \ 3471da177e4SLinus Torvalds *(__param) \ 3481da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___param) = .; \ 349edeed305SArjan van de Ven . = ALIGN((align)); \ 3506569580dSVivek Goyal VMLINUX_SYMBOL(__end_rodata) = .; \ 3517583ddfdSMarcelo Tosatti } \ 3524096b46fSSam Ravnborg . = ALIGN((align)); 3534096b46fSSam Ravnborg 354ef53dae8SSam Ravnborg /* RODATA & RO_DATA provided for backward compatibility. 3554096b46fSSam Ravnborg * All archs are supposed to use RO_DATA() */ 356ef53dae8SSam Ravnborg #define RODATA RO_DATA_SECTION(4096) 357ef53dae8SSam Ravnborg #define RO_DATA(align) RO_DATA_SECTION(align) 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds #define SECURITY_INIT \ 36060bad7faSEric W. Biederman .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ 3611da177e4SLinus Torvalds VMLINUX_SYMBOL(__security_initcall_start) = .; \ 3621da177e4SLinus Torvalds *(.security_initcall.init) \ 3631da177e4SLinus Torvalds VMLINUX_SYMBOL(__security_initcall_end) = .; \ 3641da177e4SLinus Torvalds } 3651da177e4SLinus Torvalds 3667664709bSSam Ravnborg /* .text section. Map to function alignment to avoid address changes 3677664709bSSam Ravnborg * during second ld run in second ld pass when generating System.map */ 3687664709bSSam Ravnborg #define TEXT_TEXT \ 3697664709bSSam Ravnborg ALIGN_FUNCTION(); \ 370fb5e2b37SJan Beulich *(.text.hot) \ 3710e0d314eSSam Ravnborg *(.text) \ 372312b1485SSam Ravnborg *(.ref.text) \ 373eb8f6890SSam Ravnborg DEV_KEEP(init.text) \ 374eb8f6890SSam Ravnborg DEV_KEEP(exit.text) \ 375eb8f6890SSam Ravnborg CPU_KEEP(init.text) \ 376eb8f6890SSam Ravnborg CPU_KEEP(exit.text) \ 377eb8f6890SSam Ravnborg MEM_KEEP(init.text) \ 378fb5e2b37SJan Beulich MEM_KEEP(exit.text) \ 379fb5e2b37SJan Beulich *(.text.unlikely) 380eb8f6890SSam Ravnborg 3817664709bSSam Ravnborg 3826d30e3a8SSam Ravnborg /* sched.text is aling to function alignment to secure we have same 3836d30e3a8SSam Ravnborg * address even at second ld pass when generating System.map */ 3841da177e4SLinus Torvalds #define SCHED_TEXT \ 3856d30e3a8SSam Ravnborg ALIGN_FUNCTION(); \ 3861da177e4SLinus Torvalds VMLINUX_SYMBOL(__sched_text_start) = .; \ 3871da177e4SLinus Torvalds *(.sched.text) \ 3881da177e4SLinus Torvalds VMLINUX_SYMBOL(__sched_text_end) = .; 3891da177e4SLinus Torvalds 3906d30e3a8SSam Ravnborg /* spinlock.text is aling to function alignment to secure we have same 3916d30e3a8SSam Ravnborg * address even at second ld pass when generating System.map */ 3921da177e4SLinus Torvalds #define LOCK_TEXT \ 3936d30e3a8SSam Ravnborg ALIGN_FUNCTION(); \ 3941da177e4SLinus Torvalds VMLINUX_SYMBOL(__lock_text_start) = .; \ 3951da177e4SLinus Torvalds *(.spinlock.text) \ 3961da177e4SLinus Torvalds VMLINUX_SYMBOL(__lock_text_end) = .; 397d0aaff97SPrasanna S Panchamukhi 398d0aaff97SPrasanna S Panchamukhi #define KPROBES_TEXT \ 399d0aaff97SPrasanna S Panchamukhi ALIGN_FUNCTION(); \ 400d0aaff97SPrasanna S Panchamukhi VMLINUX_SYMBOL(__kprobes_text_start) = .; \ 401d0aaff97SPrasanna S Panchamukhi *(.kprobes.text) \ 402d0aaff97SPrasanna S Panchamukhi VMLINUX_SYMBOL(__kprobes_text_end) = .; 403a7d0c210SPaolo 'Blaisorblade' Giarrusso 404a0343e82SFrederic Weisbecker #ifdef CONFIG_FUNCTION_GRAPH_TRACER 405a0343e82SFrederic Weisbecker #define IRQENTRY_TEXT \ 406a0343e82SFrederic Weisbecker ALIGN_FUNCTION(); \ 407a0343e82SFrederic Weisbecker VMLINUX_SYMBOL(__irqentry_text_start) = .; \ 408a0343e82SFrederic Weisbecker *(.irqentry.text) \ 409a0343e82SFrederic Weisbecker VMLINUX_SYMBOL(__irqentry_text_end) = .; 410a0343e82SFrederic Weisbecker #else 411a0343e82SFrederic Weisbecker #define IRQENTRY_TEXT 412a0343e82SFrederic Weisbecker #endif 413a0343e82SFrederic Weisbecker 41437c514e3SSam Ravnborg /* Section used for early init (in .S files) */ 4157923f90fSSam Ravnborg #define HEAD_TEXT *(.head.text) 41637c514e3SSam Ravnborg 4177923f90fSSam Ravnborg #define HEAD_TEXT_SECTION \ 418ef53dae8SSam Ravnborg .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ 419ef53dae8SSam Ravnborg HEAD_TEXT \ 420ef53dae8SSam Ravnborg } 421ef53dae8SSam Ravnborg 422ef53dae8SSam Ravnborg /* 423ef53dae8SSam Ravnborg * Exception table 424ef53dae8SSam Ravnborg */ 425ef53dae8SSam Ravnborg #define EXCEPTION_TABLE(align) \ 426ef53dae8SSam Ravnborg . = ALIGN(align); \ 427ef53dae8SSam Ravnborg __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ 428ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__start___ex_table) = .; \ 429ef53dae8SSam Ravnborg *(__ex_table) \ 430ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__stop___ex_table) = .; \ 431ef53dae8SSam Ravnborg } 432ef53dae8SSam Ravnborg 433ef53dae8SSam Ravnborg /* 434ef53dae8SSam Ravnborg * Init task 435ef53dae8SSam Ravnborg */ 43639a449d9STim Abbott #define INIT_TASK_DATA_SECTION(align) \ 437ef53dae8SSam Ravnborg . = ALIGN(align); \ 438*da5e37efSSam Ravnborg .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ 43939a449d9STim Abbott INIT_TASK_DATA(align) \ 440ef53dae8SSam Ravnborg } 441eb8f6890SSam Ravnborg 442b99b87f7SPeter Oberparleiter #ifdef CONFIG_CONSTRUCTORS 4432a2325e6SHeiko Carstens #define KERNEL_CTORS() . = ALIGN(8); \ 4442a2325e6SHeiko Carstens VMLINUX_SYMBOL(__ctors_start) = .; \ 445b99b87f7SPeter Oberparleiter *(.ctors) \ 446b99b87f7SPeter Oberparleiter VMLINUX_SYMBOL(__ctors_end) = .; 447b99b87f7SPeter Oberparleiter #else 448b99b87f7SPeter Oberparleiter #define KERNEL_CTORS() 449b99b87f7SPeter Oberparleiter #endif 450b99b87f7SPeter Oberparleiter 45101ba2bdcSSam Ravnborg /* init and exit section handling */ 452eb8f6890SSam Ravnborg #define INIT_DATA \ 453eb8f6890SSam Ravnborg *(.init.data) \ 454eb8f6890SSam Ravnborg DEV_DISCARD(init.data) \ 455eb8f6890SSam Ravnborg CPU_DISCARD(init.data) \ 456eb8f6890SSam Ravnborg MEM_DISCARD(init.data) \ 457b99b87f7SPeter Oberparleiter KERNEL_CTORS() \ 458fd6c3a8dSJan Beulich *(.init.rodata) \ 4594b3b4c5eSJohn Reiser MCOUNT_REC() \ 460fd6c3a8dSJan Beulich DEV_DISCARD(init.rodata) \ 461fd6c3a8dSJan Beulich CPU_DISCARD(init.rodata) \ 462e9d376f0SJason Baron MEM_DISCARD(init.rodata) 46301ba2bdcSSam Ravnborg 464eb8f6890SSam Ravnborg #define INIT_TEXT \ 465eb8f6890SSam Ravnborg *(.init.text) \ 466eb8f6890SSam Ravnborg DEV_DISCARD(init.text) \ 467eb8f6890SSam Ravnborg CPU_DISCARD(init.text) \ 468eb8f6890SSam Ravnborg MEM_DISCARD(init.text) 469eb8f6890SSam Ravnborg 470eb8f6890SSam Ravnborg #define EXIT_DATA \ 471eb8f6890SSam Ravnborg *(.exit.data) \ 472eb8f6890SSam Ravnborg DEV_DISCARD(exit.data) \ 473eb8f6890SSam Ravnborg DEV_DISCARD(exit.rodata) \ 474eb8f6890SSam Ravnborg CPU_DISCARD(exit.data) \ 475eb8f6890SSam Ravnborg CPU_DISCARD(exit.rodata) \ 476eb8f6890SSam Ravnborg MEM_DISCARD(exit.data) \ 477eb8f6890SSam Ravnborg MEM_DISCARD(exit.rodata) 478eb8f6890SSam Ravnborg 479eb8f6890SSam Ravnborg #define EXIT_TEXT \ 480eb8f6890SSam Ravnborg *(.exit.text) \ 481eb8f6890SSam Ravnborg DEV_DISCARD(exit.text) \ 482eb8f6890SSam Ravnborg CPU_DISCARD(exit.text) \ 483eb8f6890SSam Ravnborg MEM_DISCARD(exit.text) 48401ba2bdcSSam Ravnborg 4857923f90fSSam Ravnborg #define EXIT_CALL \ 4867923f90fSSam Ravnborg *(.exitcall.exit) 4877923f90fSSam Ravnborg 488ef53dae8SSam Ravnborg /* 489ef53dae8SSam Ravnborg * bss (Block Started by Symbol) - uninitialized data 490ef53dae8SSam Ravnborg * zeroed during startup 491ef53dae8SSam Ravnborg */ 49204e448d9STim Abbott #define SBSS(sbss_align) \ 49304e448d9STim Abbott . = ALIGN(sbss_align); \ 494ef53dae8SSam Ravnborg .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ 495ef53dae8SSam Ravnborg *(.sbss) \ 496ef53dae8SSam Ravnborg *(.scommon) \ 497ef53dae8SSam Ravnborg } 498ef53dae8SSam Ravnborg 499ef53dae8SSam Ravnborg #define BSS(bss_align) \ 500ef53dae8SSam Ravnborg . = ALIGN(bss_align); \ 501ef53dae8SSam Ravnborg .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ 5027c74df07STim Abbott *(.bss..page_aligned) \ 503ef53dae8SSam Ravnborg *(.dynbss) \ 504ef53dae8SSam Ravnborg *(.bss) \ 505ef53dae8SSam Ravnborg *(COMMON) \ 506ef53dae8SSam Ravnborg } 507ef53dae8SSam Ravnborg 508ef53dae8SSam Ravnborg /* 509ef53dae8SSam Ravnborg * DWARF debug sections. 510ef53dae8SSam Ravnborg * Symbols in the DWARF debugging sections are relative to 511ef53dae8SSam Ravnborg * the beginning of the section so we begin them at 0. 512ef53dae8SSam Ravnborg */ 513a7d0c210SPaolo 'Blaisorblade' Giarrusso #define DWARF_DEBUG \ 514a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 1 */ \ 515a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug 0 : { *(.debug) } \ 516a7d0c210SPaolo 'Blaisorblade' Giarrusso .line 0 : { *(.line) } \ 517a7d0c210SPaolo 'Blaisorblade' Giarrusso /* GNU DWARF 1 extensions */ \ 518a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_srcinfo 0 : { *(.debug_srcinfo) } \ 519a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_sfnames 0 : { *(.debug_sfnames) } \ 520a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 1.1 and DWARF 2 */ \ 521a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_aranges 0 : { *(.debug_aranges) } \ 522a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_pubnames 0 : { *(.debug_pubnames) } \ 523a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 2 */ \ 524a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_info 0 : { *(.debug_info \ 525a7d0c210SPaolo 'Blaisorblade' Giarrusso .gnu.linkonce.wi.*) } \ 526a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_abbrev 0 : { *(.debug_abbrev) } \ 527a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_line 0 : { *(.debug_line) } \ 528a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_frame 0 : { *(.debug_frame) } \ 529a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_str 0 : { *(.debug_str) } \ 530a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_loc 0 : { *(.debug_loc) } \ 531a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_macinfo 0 : { *(.debug_macinfo) } \ 532a7d0c210SPaolo 'Blaisorblade' Giarrusso /* SGI/MIPS DWARF 2 extensions */ \ 533a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_weaknames 0 : { *(.debug_weaknames) } \ 534a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_funcnames 0 : { *(.debug_funcnames) } \ 535a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_typenames 0 : { *(.debug_typenames) } \ 536a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_varnames 0 : { *(.debug_varnames) } \ 537a7d0c210SPaolo 'Blaisorblade' Giarrusso 538a7d0c210SPaolo 'Blaisorblade' Giarrusso /* Stabs debugging sections. */ 539a7d0c210SPaolo 'Blaisorblade' Giarrusso #define STABS_DEBUG \ 540a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab 0 : { *(.stab) } \ 541a7d0c210SPaolo 'Blaisorblade' Giarrusso .stabstr 0 : { *(.stabstr) } \ 542a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.excl 0 : { *(.stab.excl) } \ 543a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.exclstr 0 : { *(.stab.exclstr) } \ 544a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.index 0 : { *(.stab.index) } \ 545a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.indexstr 0 : { *(.stab.indexstr) } \ 546a7d0c210SPaolo 'Blaisorblade' Giarrusso .comment 0 : { *(.comment) } 5479c9b8b38SJeremy Fitzhardinge 5486360b1fbSJan Beulich #ifdef CONFIG_GENERIC_BUG 5497664c5a1SJeremy Fitzhardinge #define BUG_TABLE \ 5507664c5a1SJeremy Fitzhardinge . = ALIGN(8); \ 5517664c5a1SJeremy Fitzhardinge __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ 552c6de0026SYoshinori Sato VMLINUX_SYMBOL(__start___bug_table) = .; \ 5537664c5a1SJeremy Fitzhardinge *(__bug_table) \ 554c6de0026SYoshinori Sato VMLINUX_SYMBOL(__stop___bug_table) = .; \ 5557664c5a1SJeremy Fitzhardinge } 5566360b1fbSJan Beulich #else 5576360b1fbSJan Beulich #define BUG_TABLE 5586360b1fbSJan Beulich #endif 5597664c5a1SJeremy Fitzhardinge 56063687a52SJan Beulich #ifdef CONFIG_PM_TRACE 56163687a52SJan Beulich #define TRACEDATA \ 56263687a52SJan Beulich . = ALIGN(4); \ 56363687a52SJan Beulich .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ 564c6de0026SYoshinori Sato VMLINUX_SYMBOL(__tracedata_start) = .; \ 56563687a52SJan Beulich *(.tracedata) \ 566c6de0026SYoshinori Sato VMLINUX_SYMBOL(__tracedata_end) = .; \ 56763687a52SJan Beulich } 56863687a52SJan Beulich #else 56963687a52SJan Beulich #define TRACEDATA 57063687a52SJan Beulich #endif 57163687a52SJan Beulich 5729c9b8b38SJeremy Fitzhardinge #define NOTES \ 573cbe87121SRoland McGrath .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ 574cbe87121SRoland McGrath VMLINUX_SYMBOL(__start_notes) = .; \ 575cbe87121SRoland McGrath *(.note.*) \ 576cbe87121SRoland McGrath VMLINUX_SYMBOL(__stop_notes) = .; \ 577cbe87121SRoland McGrath } 57861ce1efeSAndrew Morton 579ef53dae8SSam Ravnborg #define INIT_SETUP(initsetup_align) \ 580ef53dae8SSam Ravnborg . = ALIGN(initsetup_align); \ 581ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__setup_start) = .; \ 582ef53dae8SSam Ravnborg *(.init.setup) \ 583ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__setup_end) = .; 584ef53dae8SSam Ravnborg 58561ce1efeSAndrew Morton #define INITCALLS \ 586c2147a50SEduard - Gabriel Munteanu *(.initcallearly.init) \ 587c6de0026SYoshinori Sato VMLINUX_SYMBOL(__early_initcall_end) = .; \ 588b3438f82SLinus Torvalds *(.initcall0.init) \ 589b3438f82SLinus Torvalds *(.initcall0s.init) \ 59061ce1efeSAndrew Morton *(.initcall1.init) \ 591735a7ffbSAndrew Morton *(.initcall1s.init) \ 59261ce1efeSAndrew Morton *(.initcall2.init) \ 593735a7ffbSAndrew Morton *(.initcall2s.init) \ 59461ce1efeSAndrew Morton *(.initcall3.init) \ 595735a7ffbSAndrew Morton *(.initcall3s.init) \ 59661ce1efeSAndrew Morton *(.initcall4.init) \ 597735a7ffbSAndrew Morton *(.initcall4s.init) \ 59861ce1efeSAndrew Morton *(.initcall5.init) \ 599735a7ffbSAndrew Morton *(.initcall5s.init) \ 6008d610dd5SLinus Torvalds *(.initcallrootfs.init) \ 60161ce1efeSAndrew Morton *(.initcall6.init) \ 602735a7ffbSAndrew Morton *(.initcall6s.init) \ 603735a7ffbSAndrew Morton *(.initcall7.init) \ 604735a7ffbSAndrew Morton *(.initcall7s.init) 60561ce1efeSAndrew Morton 606ef53dae8SSam Ravnborg #define INIT_CALLS \ 607ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initcall_start) = .; \ 608ef53dae8SSam Ravnborg INITCALLS \ 609ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initcall_end) = .; 610ef53dae8SSam Ravnborg 611ef53dae8SSam Ravnborg #define CON_INITCALL \ 612ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__con_initcall_start) = .; \ 613ef53dae8SSam Ravnborg *(.con_initcall.init) \ 614ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__con_initcall_end) = .; 615ef53dae8SSam Ravnborg 616ef53dae8SSam Ravnborg #define SECURITY_INITCALL \ 617ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__security_initcall_start) = .; \ 618ef53dae8SSam Ravnborg *(.security_initcall.init) \ 619ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__security_initcall_end) = .; 620ef53dae8SSam Ravnborg 621ef53dae8SSam Ravnborg #ifdef CONFIG_BLK_DEV_INITRD 622ef53dae8SSam Ravnborg #define INIT_RAM_FS \ 623ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 624ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initramfs_start) = .; \ 625ef53dae8SSam Ravnborg *(.init.ramfs) \ 626ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initramfs_end) = .; 627ef53dae8SSam Ravnborg #else 628eadfe219SDavid Howells #define INIT_RAM_FS 629ef53dae8SSam Ravnborg #endif 630ef53dae8SSam Ravnborg 631023bf6f1STejun Heo /* 632023bf6f1STejun Heo * Default discarded sections. 633023bf6f1STejun Heo * 634023bf6f1STejun Heo * Some archs want to discard exit text/data at runtime rather than 635023bf6f1STejun Heo * link time due to cross-section references such as alt instructions, 636023bf6f1STejun Heo * bug table, eh_frame, etc. DISCARDS must be the last of output 637023bf6f1STejun Heo * section definitions so that such archs put those in earlier section 638023bf6f1STejun Heo * definitions. 639023bf6f1STejun Heo */ 640405d967dSTejun Heo #define DISCARDS \ 641405d967dSTejun Heo /DISCARD/ : { \ 642405d967dSTejun Heo EXIT_TEXT \ 643405d967dSTejun Heo EXIT_DATA \ 644023bf6f1STejun Heo EXIT_CALL \ 645405d967dSTejun Heo *(.discard) \ 646405d967dSTejun Heo } 647405d967dSTejun Heo 6483e5d8f97STejun Heo /** 6496b7c38d5STejun Heo * PERCPU_VADDR - define output section for percpu area 6503e5d8f97STejun Heo * @vaddr: explicit base address (optional) 6513e5d8f97STejun Heo * @phdr: destination PHDR (optional) 6523e5d8f97STejun Heo * 6533e5d8f97STejun Heo * Macro which expands to output section for percpu area. If @vaddr 6543e5d8f97STejun Heo * is not blank, it specifies explicit base address and all percpu 6553e5d8f97STejun Heo * symbols will be offset from the given address. If blank, @vaddr 6563e5d8f97STejun Heo * always equals @laddr + LOAD_OFFSET. 6573e5d8f97STejun Heo * 6583e5d8f97STejun Heo * @phdr defines the output PHDR to use if not blank. Be warned that 6593e5d8f97STejun Heo * output PHDR is sticky. If @phdr is specified, the next output 6603e5d8f97STejun Heo * section in the linker script will go there too. @phdr should have 6613e5d8f97STejun Heo * a leading colon. 6623e5d8f97STejun Heo * 6633ac6cffeSTejun Heo * Note that this macros defines __per_cpu_load as an absolute symbol. 6643ac6cffeSTejun Heo * If there is no need to put the percpu section at a predetermined 6653ac6cffeSTejun Heo * address, use PERCPU(). 6663e5d8f97STejun Heo */ 6673e5d8f97STejun Heo #define PERCPU_VADDR(vaddr, phdr) \ 668dba3d36bSIngo Molnar VMLINUX_SYMBOL(__per_cpu_load) = .; \ 6693d9a854cSDenys Vlasenko .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ 6706b7c38d5STejun Heo - LOAD_OFFSET) { \ 671c6de0026SYoshinori Sato VMLINUX_SYMBOL(__per_cpu_start) = .; \ 6723d9a854cSDenys Vlasenko *(.data..percpu..first) \ 6733d9a854cSDenys Vlasenko *(.data..percpu..page_aligned) \ 6743d9a854cSDenys Vlasenko *(.data..percpu) \ 6753d9a854cSDenys Vlasenko *(.data..percpu..shared_aligned) \ 6766b7c38d5STejun Heo VMLINUX_SYMBOL(__per_cpu_end) = .; \ 6776b7c38d5STejun Heo } phdr \ 6783d9a854cSDenys Vlasenko . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); 6793e5d8f97STejun Heo 6803e5d8f97STejun Heo /** 6813e5d8f97STejun Heo * PERCPU - define output section for percpu area, simple version 6823e5d8f97STejun Heo * @align: required alignment 6833e5d8f97STejun Heo * 6843e5d8f97STejun Heo * Align to @align and outputs output section for percpu area. This 6853e5d8f97STejun Heo * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and 6863e5d8f97STejun Heo * __per_cpu_start will be identical. 6873ac6cffeSTejun Heo * 6883ac6cffeSTejun Heo * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except 6893ac6cffeSTejun Heo * that __per_cpu_load is defined as a relative symbol against 6903d9a854cSDenys Vlasenko * .data..percpu which is required for relocatable x86_32 6913ac6cffeSTejun Heo * configuration. 6923e5d8f97STejun Heo */ 6933e5d8f97STejun Heo #define PERCPU(align) \ 6943e5d8f97STejun Heo . = ALIGN(align); \ 6953d9a854cSDenys Vlasenko .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ 6963ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_load) = .; \ 6973ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_start) = .; \ 6983d9a854cSDenys Vlasenko *(.data..percpu..first) \ 6993d9a854cSDenys Vlasenko *(.data..percpu..page_aligned) \ 7003d9a854cSDenys Vlasenko *(.data..percpu) \ 7013d9a854cSDenys Vlasenko *(.data..percpu..shared_aligned) \ 7023ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_end) = .; \ 7033ac6cffeSTejun Heo } 704ef53dae8SSam Ravnborg 705ef53dae8SSam Ravnborg 706ef53dae8SSam Ravnborg /* 707ef53dae8SSam Ravnborg * Definition of the high level *_SECTION macros 708ef53dae8SSam Ravnborg * They will fit only a subset of the architectures 709ef53dae8SSam Ravnborg */ 710ef53dae8SSam Ravnborg 711ef53dae8SSam Ravnborg 712ef53dae8SSam Ravnborg /* 713ef53dae8SSam Ravnborg * Writeable data. 714ef53dae8SSam Ravnborg * All sections are combined in a single .data section. 715ef53dae8SSam Ravnborg * The sections following CONSTRUCTORS are arranged so their 716ef53dae8SSam Ravnborg * typical alignment matches. 717ef53dae8SSam Ravnborg * A cacheline is typical/always less than a PAGE_SIZE so 718ef53dae8SSam Ravnborg * the sections that has this restriction (or similar) 719ef53dae8SSam Ravnborg * is located before the ones requiring PAGE_SIZE alignment. 720ef53dae8SSam Ravnborg * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which 721ef53dae8SSam Ravnborg * matches the requirment of PAGE_ALIGNED_DATA. 722ef53dae8SSam Ravnborg * 7237923f90fSSam Ravnborg * use 0 as page_align if page_aligned data is not used */ 72473f1d939SPaul Mundt #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ 725ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 726ef53dae8SSam Ravnborg .data : AT(ADDR(.data) - LOAD_OFFSET) { \ 72739a449d9STim Abbott INIT_TASK_DATA(inittask) \ 7281b208622STim Abbott NOSAVE_DATA \ 7291b208622STim Abbott PAGE_ALIGNED_DATA(pagealigned) \ 730ef53dae8SSam Ravnborg CACHELINE_ALIGNED_DATA(cacheline) \ 731ef53dae8SSam Ravnborg READ_MOSTLY_DATA(cacheline) \ 732ef53dae8SSam Ravnborg DATA_DATA \ 733ef53dae8SSam Ravnborg CONSTRUCTORS \ 734ef53dae8SSam Ravnborg } 735ef53dae8SSam Ravnborg 736ef53dae8SSam Ravnborg #define INIT_TEXT_SECTION(inittext_align) \ 737ef53dae8SSam Ravnborg . = ALIGN(inittext_align); \ 738ef53dae8SSam Ravnborg .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ 739ef53dae8SSam Ravnborg VMLINUX_SYMBOL(_sinittext) = .; \ 740ef53dae8SSam Ravnborg INIT_TEXT \ 741ef53dae8SSam Ravnborg VMLINUX_SYMBOL(_einittext) = .; \ 742ef53dae8SSam Ravnborg } 743ef53dae8SSam Ravnborg 744ef53dae8SSam Ravnborg #define INIT_DATA_SECTION(initsetup_align) \ 745ef53dae8SSam Ravnborg .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ 746ef53dae8SSam Ravnborg INIT_DATA \ 747ef53dae8SSam Ravnborg INIT_SETUP(initsetup_align) \ 748ef53dae8SSam Ravnborg INIT_CALLS \ 749ef53dae8SSam Ravnborg CON_INITCALL \ 750ef53dae8SSam Ravnborg SECURITY_INITCALL \ 751ef53dae8SSam Ravnborg INIT_RAM_FS \ 752ef53dae8SSam Ravnborg } 753ef53dae8SSam Ravnborg 75404e448d9STim Abbott #define BSS_SECTION(sbss_align, bss_align, stop_align) \ 75504e448d9STim Abbott . = ALIGN(sbss_align); \ 75604e448d9STim Abbott VMLINUX_SYMBOL(__bss_start) = .; \ 75704e448d9STim Abbott SBSS(sbss_align) \ 758ef53dae8SSam Ravnborg BSS(bss_align) \ 75904e448d9STim Abbott . = ALIGN(stop_align); \ 76004e448d9STim Abbott VMLINUX_SYMBOL(__bss_stop) = .; 761