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(...) 180415b00dSTejun Heo * PERCPU_SECTION(CACHELINE_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 43562c85caSYalin Wang * // __init_begin and __init_end should be page aligned, so that we can 44562c85caSYalin Wang * // free the whole .init memory 45ef53dae8SSam Ravnborg * [_stext, _etext] is the text section 46ef53dae8SSam Ravnborg * [_sdata, _edata] is the data section 47ef53dae8SSam Ravnborg * 48ef53dae8SSam Ravnborg * Some of the included output section have their own set of constants. 49ef53dae8SSam Ravnborg * Examples are: [__initramfs_start, __initramfs_end] for initramfs and 50ef53dae8SSam Ravnborg * [__nosave_begin, __nosave_end] for the nosave data 51ef53dae8SSam Ravnborg */ 52c80d471aSTim Abbott 531da177e4SLinus Torvalds #ifndef LOAD_OFFSET 541da177e4SLinus Torvalds #define LOAD_OFFSET 0 551da177e4SLinus Torvalds #endif 561da177e4SLinus Torvalds 57b92021b0SRusty Russell #include <linux/export.h> 581da177e4SLinus Torvalds 596d30e3a8SSam Ravnborg /* Align . to a 8 byte boundary equals to maximum function alignment. */ 606d30e3a8SSam Ravnborg #define ALIGN_FUNCTION() . = ALIGN(8) 616d30e3a8SSam Ravnborg 6207fca0e5SSam Ravnborg /* 6307fca0e5SSam Ravnborg * Align to a 32 byte boundary equal to the 6407fca0e5SSam Ravnborg * alignment gcc 4.5 uses for a struct 6507fca0e5SSam Ravnborg */ 66aab94339SDirk Brandewie #define STRUCT_ALIGNMENT 32 67aab94339SDirk Brandewie #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) 6807fca0e5SSam Ravnborg 69eb8f6890SSam Ravnborg /* The actual configuration determine if the init/exit sections 70eb8f6890SSam Ravnborg * are handled as text/data or they can be discarded (which 71eb8f6890SSam Ravnborg * often happens at runtime) 72eb8f6890SSam Ravnborg */ 73eb8f6890SSam Ravnborg #ifdef CONFIG_HOTPLUG_CPU 74eb8f6890SSam Ravnborg #define CPU_KEEP(sec) *(.cpu##sec) 75eb8f6890SSam Ravnborg #define CPU_DISCARD(sec) 76eb8f6890SSam Ravnborg #else 77eb8f6890SSam Ravnborg #define CPU_KEEP(sec) 78eb8f6890SSam Ravnborg #define CPU_DISCARD(sec) *(.cpu##sec) 79eb8f6890SSam Ravnborg #endif 80eb8f6890SSam Ravnborg 811a3fb6d4SAdrian Bunk #if defined(CONFIG_MEMORY_HOTPLUG) 82eb8f6890SSam Ravnborg #define MEM_KEEP(sec) *(.mem##sec) 83eb8f6890SSam Ravnborg #define MEM_DISCARD(sec) 84eb8f6890SSam Ravnborg #else 85eb8f6890SSam Ravnborg #define MEM_KEEP(sec) 86eb8f6890SSam Ravnborg #define MEM_DISCARD(sec) *(.mem##sec) 87eb8f6890SSam Ravnborg #endif 88eb8f6890SSam Ravnborg 898da3821bSSteven Rostedt #ifdef CONFIG_FTRACE_MCOUNT_RECORD 904b3b4c5eSJohn Reiser #define MCOUNT_REC() . = ALIGN(8); \ 914b3b4c5eSJohn Reiser VMLINUX_SYMBOL(__start_mcount_loc) = .; \ 928da3821bSSteven Rostedt *(__mcount_loc) \ 938da3821bSSteven Rostedt VMLINUX_SYMBOL(__stop_mcount_loc) = .; 948da3821bSSteven Rostedt #else 958da3821bSSteven Rostedt #define MCOUNT_REC() 968da3821bSSteven Rostedt #endif 97eb8f6890SSam Ravnborg 982ed84eebSSteven Rostedt #ifdef CONFIG_TRACE_BRANCH_PROFILING 9945b79749SSteven Rostedt #define LIKELY_PROFILE() VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \ 10045b79749SSteven Rostedt *(_ftrace_annotated_branch) \ 10145b79749SSteven Rostedt VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .; 1021f0d69a9SSteven Rostedt #else 1031f0d69a9SSteven Rostedt #define LIKELY_PROFILE() 1041f0d69a9SSteven Rostedt #endif 1051f0d69a9SSteven Rostedt 1062bcd521aSSteven Rostedt #ifdef CONFIG_PROFILE_ALL_BRANCHES 1072bcd521aSSteven Rostedt #define BRANCH_PROFILE() VMLINUX_SYMBOL(__start_branch_profile) = .; \ 1082bcd521aSSteven Rostedt *(_ftrace_branch) \ 1092bcd521aSSteven Rostedt VMLINUX_SYMBOL(__stop_branch_profile) = .; 1102bcd521aSSteven Rostedt #else 1112bcd521aSSteven Rostedt #define BRANCH_PROFILE() 1122bcd521aSSteven Rostedt #endif 1132bcd521aSSteven Rostedt 114376e2424SMasami Hiramatsu #ifdef CONFIG_KPROBES 11569902c71SVineet Gupta #define KPROBE_BLACKLIST() . = ALIGN(8); \ 11669902c71SVineet Gupta VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \ 117376e2424SMasami Hiramatsu *(_kprobe_blacklist) \ 118376e2424SMasami Hiramatsu VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .; 119376e2424SMasami Hiramatsu #else 120376e2424SMasami Hiramatsu #define KPROBE_BLACKLIST() 121376e2424SMasami Hiramatsu #endif 122376e2424SMasami Hiramatsu 1235f77a88bSTom Zanussi #ifdef CONFIG_EVENT_TRACING 124e4a9ea5eSSteven Rostedt #define FTRACE_EVENTS() . = ALIGN(8); \ 125e4a9ea5eSSteven Rostedt VMLINUX_SYMBOL(__start_ftrace_events) = .; \ 126b77e38aaSSteven Rostedt *(_ftrace_events) \ 1270c564a53SSteven Rostedt (Red Hat) VMLINUX_SYMBOL(__stop_ftrace_events) = .; \ 1280c564a53SSteven Rostedt (Red Hat) VMLINUX_SYMBOL(__start_ftrace_enum_maps) = .; \ 1290c564a53SSteven Rostedt (Red Hat) *(_ftrace_enum_map) \ 1300c564a53SSteven Rostedt (Red Hat) VMLINUX_SYMBOL(__stop_ftrace_enum_maps) = .; 131b77e38aaSSteven Rostedt #else 132b77e38aaSSteven Rostedt #define FTRACE_EVENTS() 133b77e38aaSSteven Rostedt #endif 134b77e38aaSSteven Rostedt 1351ba28e02SLai Jiangshan #ifdef CONFIG_TRACING 1361ba28e02SLai Jiangshan #define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .; \ 1371ba28e02SLai Jiangshan *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \ 1381ba28e02SLai Jiangshan VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .; 139102c9323SSteven Rostedt (Red Hat) #define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .; \ 140102c9323SSteven Rostedt (Red Hat) *(__tracepoint_str) /* Trace_printk fmt' pointer */ \ 141102c9323SSteven Rostedt (Red Hat) VMLINUX_SYMBOL(__stop___tracepoint_str) = .; 1421ba28e02SLai Jiangshan #else 1431ba28e02SLai Jiangshan #define TRACE_PRINTKS() 144102c9323SSteven Rostedt (Red Hat) #define TRACEPOINT_STR() 1451ba28e02SLai Jiangshan #endif 1461ba28e02SLai Jiangshan 147bed1ffcaSFrederic Weisbecker #ifdef CONFIG_FTRACE_SYSCALLS 1483d56e331SSteven Rostedt #define TRACE_SYSCALLS() . = ALIGN(8); \ 1493d56e331SSteven Rostedt VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \ 150bed1ffcaSFrederic Weisbecker *(__syscalls_metadata) \ 151bed1ffcaSFrederic Weisbecker VMLINUX_SYMBOL(__stop_syscalls_metadata) = .; 152bed1ffcaSFrederic Weisbecker #else 153bed1ffcaSFrederic Weisbecker #define TRACE_SYSCALLS() 154bed1ffcaSFrederic Weisbecker #endif 155bed1ffcaSFrederic Weisbecker 156470ca0deSPeter Hurley #ifdef CONFIG_SERIAL_EARLYCON 15799492c39SPeter Hurley #define EARLYCON_TABLE() STRUCT_ALIGN(); \ 158470ca0deSPeter Hurley VMLINUX_SYMBOL(__earlycon_table) = .; \ 159470ca0deSPeter Hurley *(__earlycon_table) \ 1602eaa7909SPeter Hurley VMLINUX_SYMBOL(__earlycon_table_end) = .; 161470ca0deSPeter Hurley #else 162470ca0deSPeter Hurley #define EARLYCON_TABLE() 163470ca0deSPeter Hurley #endif 164aab94339SDirk Brandewie 16506309288SRob Herring #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) 16606309288SRob Herring #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) 16706309288SRob Herring #define OF_TABLE(cfg, name) __OF_TABLE(config_enabled(cfg), name) 16806309288SRob Herring #define _OF_TABLE_0(name) 16906309288SRob Herring #define _OF_TABLE_1(name) \ 170f6e916b8SThomas Petazzoni . = ALIGN(8); \ 17106309288SRob Herring VMLINUX_SYMBOL(__##name##_of_table) = .; \ 17206309288SRob Herring *(__##name##_of_table) \ 17306309288SRob Herring *(__##name##_of_table_end) 174aab94339SDirk Brandewie 17506309288SRob Herring #define CLKSRC_OF_TABLES() OF_TABLE(CONFIG_CLKSRC_OF, clksrc) 17606309288SRob Herring #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) 17706309288SRob Herring #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) 1781cd076bfSWill Deacon #define IOMMU_OF_TABLES() OF_TABLE(CONFIG_OF_IOMMU, iommu) 17906309288SRob Herring #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) 18006309288SRob Herring #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) 181449e056cSDaniel Lezcano #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) 1826c3ff8b1SStephen Boyd 183e647b532SMarc Zyngier #ifdef CONFIG_ACPI 184e647b532SMarc Zyngier #define ACPI_PROBE_TABLE(name) \ 185e647b532SMarc Zyngier . = ALIGN(8); \ 186e647b532SMarc Zyngier VMLINUX_SYMBOL(__##name##_acpi_probe_table) = .; \ 187e647b532SMarc Zyngier *(__##name##_acpi_probe_table) \ 188e647b532SMarc Zyngier VMLINUX_SYMBOL(__##name##_acpi_probe_table_end) = .; 189e647b532SMarc Zyngier #else 190e647b532SMarc Zyngier #define ACPI_PROBE_TABLE(name) 191e647b532SMarc Zyngier #endif 192e647b532SMarc Zyngier 193aab94339SDirk Brandewie #define KERNEL_DTB() \ 194aab94339SDirk Brandewie STRUCT_ALIGN(); \ 195aab94339SDirk Brandewie VMLINUX_SYMBOL(__dtb_start) = .; \ 196aab94339SDirk Brandewie *(.dtb.init.rodata) \ 197aab94339SDirk Brandewie VMLINUX_SYMBOL(__dtb_end) = .; 198aab94339SDirk Brandewie 199ca967258SSam Ravnborg /* .data section */ 200ca967258SSam Ravnborg #define DATA_DATA \ 2010e0d314eSSam Ravnborg *(.data) \ 202312b1485SSam Ravnborg *(.ref.data) \ 203d356c0b6SMike Frysinger *(.data..shared_aligned) /* percpu related */ \ 204eb8f6890SSam Ravnborg MEM_KEEP(init.data) \ 205eb8f6890SSam Ravnborg MEM_KEEP(exit.data) \ 2067ccaba53SJan Beulich *(.data.unlikely) \ 20765498646SMathieu Desnoyers STRUCT_ALIGN(); \ 20897e1c18eSMathieu Desnoyers *(__tracepoints) \ 209e9d376f0SJason Baron /* implement dynamic printk debug */ \ 210e9d376f0SJason Baron . = ALIGN(8); \ 211d430d3d7SJason Baron VMLINUX_SYMBOL(__start___jump_table) = .; \ 212d430d3d7SJason Baron *(__jump_table) \ 213d430d3d7SJason Baron VMLINUX_SYMBOL(__stop___jump_table) = .; \ 214d430d3d7SJason Baron . = ALIGN(8); \ 215e9d376f0SJason Baron VMLINUX_SYMBOL(__start___verbose) = .; \ 216e9d376f0SJason Baron *(__verbose) \ 217e9d376f0SJason Baron VMLINUX_SYMBOL(__stop___verbose) = .; \ 2182bcd521aSSteven Rostedt LIKELY_PROFILE() \ 219b77e38aaSSteven Rostedt BRANCH_PROFILE() \ 220102c9323SSteven Rostedt (Red Hat) TRACE_PRINTKS() \ 221102c9323SSteven Rostedt (Red Hat) TRACEPOINT_STR() 222ca967258SSam Ravnborg 223ef53dae8SSam Ravnborg /* 224ef53dae8SSam Ravnborg * Data section helpers 225ef53dae8SSam Ravnborg */ 226ef53dae8SSam Ravnborg #define NOSAVE_DATA \ 227ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 228ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__nosave_begin) = .; \ 22907b3bb1eSDenys Vlasenko *(.data..nosave) \ 230ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 231ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__nosave_end) = .; 232ef53dae8SSam Ravnborg 233ef53dae8SSam Ravnborg #define PAGE_ALIGNED_DATA(page_align) \ 234ef53dae8SSam Ravnborg . = ALIGN(page_align); \ 23575b13483STim Abbott *(.data..page_aligned) 236ef53dae8SSam Ravnborg 237ef53dae8SSam Ravnborg #define READ_MOSTLY_DATA(align) \ 238ef53dae8SSam Ravnborg . = ALIGN(align); \ 2398369744fSShaohua Li *(.data..read_mostly) \ 2408369744fSShaohua Li . = ALIGN(align); 241ef53dae8SSam Ravnborg 242ef53dae8SSam Ravnborg #define CACHELINE_ALIGNED_DATA(align) \ 243ef53dae8SSam Ravnborg . = ALIGN(align); \ 2444af57b78STim Abbott *(.data..cacheline_aligned) 245ef53dae8SSam Ravnborg 24639a449d9STim Abbott #define INIT_TASK_DATA(align) \ 247ef53dae8SSam Ravnborg . = ALIGN(align); \ 24891ed140dSBorislav Petkov VMLINUX_SYMBOL(__start_init_task) = .; \ 24991ed140dSBorislav Petkov *(.data..init_task) \ 25091ed140dSBorislav Petkov VMLINUX_SYMBOL(__end_init_task) = .; 251ef53dae8SSam Ravnborg 252ef53dae8SSam Ravnborg /* 253ef53dae8SSam Ravnborg * Read only Data 254ef53dae8SSam Ravnborg */ 255ef53dae8SSam Ravnborg #define RO_DATA_SECTION(align) \ 2564096b46fSSam Ravnborg . = ALIGN((align)); \ 2571da177e4SLinus Torvalds .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ 2586569580dSVivek Goyal VMLINUX_SYMBOL(__start_rodata) = .; \ 2591da177e4SLinus Torvalds *(.rodata) *(.rodata.*) \ 260c74ba8b3SKees Cook *(.data..ro_after_init) /* Read only after init */ \ 2611da177e4SLinus Torvalds *(__vermagic) /* Kernel version magic */ \ 26265498646SMathieu Desnoyers . = ALIGN(8); \ 26365498646SMathieu Desnoyers VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \ 26465498646SMathieu Desnoyers *(__tracepoints_ptrs) /* Tracepoints: pointer array */\ 26565498646SMathieu Desnoyers VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .; \ 26697e1c18eSMathieu Desnoyers *(__tracepoints_strings)/* Tracepoints: strings */ \ 2671da177e4SLinus Torvalds } \ 2681da177e4SLinus Torvalds \ 2691da177e4SLinus Torvalds .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ 2701da177e4SLinus Torvalds *(.rodata1) \ 2711da177e4SLinus Torvalds } \ 2721da177e4SLinus Torvalds \ 2736360b1fbSJan Beulich BUG_TABLE \ 2746360b1fbSJan Beulich \ 2751da177e4SLinus Torvalds /* PCI quirks */ \ 2761da177e4SLinus Torvalds .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ 2771da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \ 2781da177e4SLinus Torvalds *(.pci_fixup_early) \ 2791da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \ 2801da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \ 2811da177e4SLinus Torvalds *(.pci_fixup_header) \ 2821da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \ 2831da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \ 2841da177e4SLinus Torvalds *(.pci_fixup_final) \ 2851da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \ 2861da177e4SLinus Torvalds VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \ 2871da177e4SLinus Torvalds *(.pci_fixup_enable) \ 2881da177e4SLinus Torvalds VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \ 2891597cacbSAlan Cox VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \ 2901597cacbSAlan Cox *(.pci_fixup_resume) \ 2911597cacbSAlan Cox VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \ 292e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .; \ 293e1a2a51eSRafael J. Wysocki *(.pci_fixup_resume_early) \ 294e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .; \ 295e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .; \ 296e1a2a51eSRafael J. Wysocki *(.pci_fixup_suspend) \ 297e1a2a51eSRafael J. Wysocki VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .; \ 2987d2a01b8SAndreas Noever VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .; \ 2997d2a01b8SAndreas Noever *(.pci_fixup_suspend_late) \ 3007d2a01b8SAndreas Noever VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .; \ 3011da177e4SLinus Torvalds } \ 3021da177e4SLinus Torvalds \ 3035658c769SDavid Woodhouse /* Built-in firmware blobs */ \ 3045658c769SDavid Woodhouse .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ 3055658c769SDavid Woodhouse VMLINUX_SYMBOL(__start_builtin_fw) = .; \ 3065658c769SDavid Woodhouse *(.builtin_fw) \ 3075658c769SDavid Woodhouse VMLINUX_SYMBOL(__end_builtin_fw) = .; \ 3085658c769SDavid Woodhouse } \ 3095658c769SDavid Woodhouse \ 31063687a52SJan Beulich TRACEDATA \ 31163687a52SJan Beulich \ 3121da177e4SLinus Torvalds /* Kernel symbol table: Normal symbols */ \ 3131da177e4SLinus Torvalds __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ 3141da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___ksymtab) = .; \ 315f02e8a65SAlessio Igor Bogani *(SORT(___ksymtab+*)) \ 3161da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___ksymtab) = .; \ 3171da177e4SLinus Torvalds } \ 3181da177e4SLinus Torvalds \ 3191da177e4SLinus Torvalds /* Kernel symbol table: GPL-only symbols */ \ 3201da177e4SLinus Torvalds __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ 3211da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \ 322f02e8a65SAlessio Igor Bogani *(SORT(___ksymtab_gpl+*)) \ 3231da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ 3241da177e4SLinus Torvalds } \ 3251da177e4SLinus Torvalds \ 326f71d20e9SArjan van de Ven /* Kernel symbol table: Normal unused symbols */ \ 327f71d20e9SArjan van de Ven __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ 328f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \ 329f02e8a65SAlessio Igor Bogani *(SORT(___ksymtab_unused+*)) \ 330f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \ 331f71d20e9SArjan van de Ven } \ 332f71d20e9SArjan van de Ven \ 333f71d20e9SArjan van de Ven /* Kernel symbol table: GPL-only unused symbols */ \ 334f71d20e9SArjan van de Ven __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ 335f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \ 336f02e8a65SAlessio Igor Bogani *(SORT(___ksymtab_unused_gpl+*)) \ 337f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \ 338f71d20e9SArjan van de Ven } \ 339f71d20e9SArjan van de Ven \ 3409f28bb7eSGreg Kroah-Hartman /* Kernel symbol table: GPL-future-only symbols */ \ 3419f28bb7eSGreg Kroah-Hartman __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ 3429f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \ 343f02e8a65SAlessio Igor Bogani *(SORT(___ksymtab_gpl_future+*)) \ 3449f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \ 3459f28bb7eSGreg Kroah-Hartman } \ 3469f28bb7eSGreg Kroah-Hartman \ 3471da177e4SLinus Torvalds /* Kernel symbol table: Normal symbols */ \ 3481da177e4SLinus Torvalds __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ 3491da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___kcrctab) = .; \ 350f02e8a65SAlessio Igor Bogani *(SORT(___kcrctab+*)) \ 3511da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___kcrctab) = .; \ 3521da177e4SLinus Torvalds } \ 3531da177e4SLinus Torvalds \ 3541da177e4SLinus Torvalds /* Kernel symbol table: GPL-only symbols */ \ 3551da177e4SLinus Torvalds __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ 3561da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \ 357f02e8a65SAlessio Igor Bogani *(SORT(___kcrctab_gpl+*)) \ 3581da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \ 3591da177e4SLinus Torvalds } \ 3601da177e4SLinus Torvalds \ 361f71d20e9SArjan van de Ven /* Kernel symbol table: Normal unused symbols */ \ 362f71d20e9SArjan van de Ven __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ 363f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \ 364f02e8a65SAlessio Igor Bogani *(SORT(___kcrctab_unused+*)) \ 365f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \ 366f71d20e9SArjan van de Ven } \ 367f71d20e9SArjan van de Ven \ 368f71d20e9SArjan van de Ven /* Kernel symbol table: GPL-only unused symbols */ \ 369f71d20e9SArjan van de Ven __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ 370f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \ 371f02e8a65SAlessio Igor Bogani *(SORT(___kcrctab_unused_gpl+*)) \ 372f71d20e9SArjan van de Ven VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \ 373f71d20e9SArjan van de Ven } \ 374f71d20e9SArjan van de Ven \ 3759f28bb7eSGreg Kroah-Hartman /* Kernel symbol table: GPL-future-only symbols */ \ 3769f28bb7eSGreg Kroah-Hartman __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ 3779f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \ 378f02e8a65SAlessio Igor Bogani *(SORT(___kcrctab_gpl_future+*)) \ 3799f28bb7eSGreg Kroah-Hartman VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \ 3809f28bb7eSGreg Kroah-Hartman } \ 3819f28bb7eSGreg Kroah-Hartman \ 3821da177e4SLinus Torvalds /* Kernel symbol table: strings */ \ 3831da177e4SLinus Torvalds __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ 3841da177e4SLinus Torvalds *(__ksymtab_strings) \ 3851da177e4SLinus Torvalds } \ 3861da177e4SLinus Torvalds \ 387eb8f6890SSam Ravnborg /* __*init sections */ \ 388eb8f6890SSam Ravnborg __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ 389312b1485SSam Ravnborg *(.ref.rodata) \ 390eb8f6890SSam Ravnborg MEM_KEEP(init.rodata) \ 391eb8f6890SSam Ravnborg MEM_KEEP(exit.rodata) \ 392eb8f6890SSam Ravnborg } \ 393eb8f6890SSam Ravnborg \ 3941da177e4SLinus Torvalds /* Built-in module parameters. */ \ 3951da177e4SLinus Torvalds __param : AT(ADDR(__param) - LOAD_OFFSET) { \ 3961da177e4SLinus Torvalds VMLINUX_SYMBOL(__start___param) = .; \ 3971da177e4SLinus Torvalds *(__param) \ 3981da177e4SLinus Torvalds VMLINUX_SYMBOL(__stop___param) = .; \ 399e94965edSDmitry Torokhov } \ 400e94965edSDmitry Torokhov \ 401e94965edSDmitry Torokhov /* Built-in module versions. */ \ 402e94965edSDmitry Torokhov __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ 403e94965edSDmitry Torokhov VMLINUX_SYMBOL(__start___modver) = .; \ 404e94965edSDmitry Torokhov *(__modver) \ 405e94965edSDmitry Torokhov VMLINUX_SYMBOL(__stop___modver) = .; \ 406edeed305SArjan van de Ven . = ALIGN((align)); \ 4076569580dSVivek Goyal VMLINUX_SYMBOL(__end_rodata) = .; \ 4087583ddfdSMarcelo Tosatti } \ 4094096b46fSSam Ravnborg . = ALIGN((align)); 4104096b46fSSam Ravnborg 411ef53dae8SSam Ravnborg /* RODATA & RO_DATA provided for backward compatibility. 4124096b46fSSam Ravnborg * All archs are supposed to use RO_DATA() */ 413ef53dae8SSam Ravnborg #define RODATA RO_DATA_SECTION(4096) 414ef53dae8SSam Ravnborg #define RO_DATA(align) RO_DATA_SECTION(align) 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds #define SECURITY_INIT \ 41760bad7faSEric W. Biederman .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ 4181da177e4SLinus Torvalds VMLINUX_SYMBOL(__security_initcall_start) = .; \ 4191da177e4SLinus Torvalds *(.security_initcall.init) \ 4201da177e4SLinus Torvalds VMLINUX_SYMBOL(__security_initcall_end) = .; \ 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds 4237664709bSSam Ravnborg /* .text section. Map to function alignment to avoid address changes 4247664709bSSam Ravnborg * during second ld run in second ld pass when generating System.map */ 4257664709bSSam Ravnborg #define TEXT_TEXT \ 4267664709bSSam Ravnborg ALIGN_FUNCTION(); \ 4279bebe9e5SAndi Kleen *(.text.hot .text .text.fixup .text.unlikely) \ 428312b1485SSam Ravnborg *(.ref.text) \ 429eb8f6890SSam Ravnborg MEM_KEEP(init.text) \ 430fb5e2b37SJan Beulich MEM_KEEP(exit.text) \ 431eb8f6890SSam Ravnborg 4327664709bSSam Ravnborg 4336d30e3a8SSam Ravnborg /* sched.text is aling to function alignment to secure we have same 4346d30e3a8SSam Ravnborg * address even at second ld pass when generating System.map */ 4351da177e4SLinus Torvalds #define SCHED_TEXT \ 4366d30e3a8SSam Ravnborg ALIGN_FUNCTION(); \ 4371da177e4SLinus Torvalds VMLINUX_SYMBOL(__sched_text_start) = .; \ 4381da177e4SLinus Torvalds *(.sched.text) \ 4391da177e4SLinus Torvalds VMLINUX_SYMBOL(__sched_text_end) = .; 4401da177e4SLinus Torvalds 4416d30e3a8SSam Ravnborg /* spinlock.text is aling to function alignment to secure we have same 4426d30e3a8SSam Ravnborg * address even at second ld pass when generating System.map */ 4431da177e4SLinus Torvalds #define LOCK_TEXT \ 4446d30e3a8SSam Ravnborg ALIGN_FUNCTION(); \ 4451da177e4SLinus Torvalds VMLINUX_SYMBOL(__lock_text_start) = .; \ 4461da177e4SLinus Torvalds *(.spinlock.text) \ 4471da177e4SLinus Torvalds VMLINUX_SYMBOL(__lock_text_end) = .; 448d0aaff97SPrasanna S Panchamukhi 449d0aaff97SPrasanna S Panchamukhi #define KPROBES_TEXT \ 450d0aaff97SPrasanna S Panchamukhi ALIGN_FUNCTION(); \ 451d0aaff97SPrasanna S Panchamukhi VMLINUX_SYMBOL(__kprobes_text_start) = .; \ 452d0aaff97SPrasanna S Panchamukhi *(.kprobes.text) \ 453d0aaff97SPrasanna S Panchamukhi VMLINUX_SYMBOL(__kprobes_text_end) = .; 454a7d0c210SPaolo 'Blaisorblade' Giarrusso 455ea714547SJiri Olsa #define ENTRY_TEXT \ 456ea714547SJiri Olsa ALIGN_FUNCTION(); \ 457ea714547SJiri Olsa VMLINUX_SYMBOL(__entry_text_start) = .; \ 458ea714547SJiri Olsa *(.entry.text) \ 459ea714547SJiri Olsa VMLINUX_SYMBOL(__entry_text_end) = .; 460ea714547SJiri Olsa 461be7635e7SAlexander Potapenko #if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN) 462a0343e82SFrederic Weisbecker #define IRQENTRY_TEXT \ 463a0343e82SFrederic Weisbecker ALIGN_FUNCTION(); \ 464a0343e82SFrederic Weisbecker VMLINUX_SYMBOL(__irqentry_text_start) = .; \ 465a0343e82SFrederic Weisbecker *(.irqentry.text) \ 466a0343e82SFrederic Weisbecker VMLINUX_SYMBOL(__irqentry_text_end) = .; 467a0343e82SFrederic Weisbecker #else 468a0343e82SFrederic Weisbecker #define IRQENTRY_TEXT 469a0343e82SFrederic Weisbecker #endif 470a0343e82SFrederic Weisbecker 471be7635e7SAlexander Potapenko #if defined(CONFIG_FUNCTION_GRAPH_TRACER) || defined(CONFIG_KASAN) 472be7635e7SAlexander Potapenko #define SOFTIRQENTRY_TEXT \ 473be7635e7SAlexander Potapenko ALIGN_FUNCTION(); \ 474be7635e7SAlexander Potapenko VMLINUX_SYMBOL(__softirqentry_text_start) = .; \ 475be7635e7SAlexander Potapenko *(.softirqentry.text) \ 476be7635e7SAlexander Potapenko VMLINUX_SYMBOL(__softirqentry_text_end) = .; 477be7635e7SAlexander Potapenko #else 478be7635e7SAlexander Potapenko #define SOFTIRQENTRY_TEXT 479be7635e7SAlexander Potapenko #endif 480be7635e7SAlexander Potapenko 48137c514e3SSam Ravnborg /* Section used for early init (in .S files) */ 4827923f90fSSam Ravnborg #define HEAD_TEXT *(.head.text) 48337c514e3SSam Ravnborg 4847923f90fSSam Ravnborg #define HEAD_TEXT_SECTION \ 485ef53dae8SSam Ravnborg .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ 486ef53dae8SSam Ravnborg HEAD_TEXT \ 487ef53dae8SSam Ravnborg } 488ef53dae8SSam Ravnborg 489ef53dae8SSam Ravnborg /* 490ef53dae8SSam Ravnborg * Exception table 491ef53dae8SSam Ravnborg */ 492ef53dae8SSam Ravnborg #define EXCEPTION_TABLE(align) \ 493ef53dae8SSam Ravnborg . = ALIGN(align); \ 494ef53dae8SSam Ravnborg __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ 495ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__start___ex_table) = .; \ 496ef53dae8SSam Ravnborg *(__ex_table) \ 497ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__stop___ex_table) = .; \ 498ef53dae8SSam Ravnborg } 499ef53dae8SSam Ravnborg 500ef53dae8SSam Ravnborg /* 501ef53dae8SSam Ravnborg * Init task 502ef53dae8SSam Ravnborg */ 50339a449d9STim Abbott #define INIT_TASK_DATA_SECTION(align) \ 504ef53dae8SSam Ravnborg . = ALIGN(align); \ 505da5e37efSSam Ravnborg .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ 50639a449d9STim Abbott INIT_TASK_DATA(align) \ 507ef53dae8SSam Ravnborg } 508eb8f6890SSam Ravnborg 509b99b87f7SPeter Oberparleiter #ifdef CONFIG_CONSTRUCTORS 5102a2325e6SHeiko Carstens #define KERNEL_CTORS() . = ALIGN(8); \ 5112a2325e6SHeiko Carstens VMLINUX_SYMBOL(__ctors_start) = .; \ 512b99b87f7SPeter Oberparleiter *(.ctors) \ 5139ddf8252SAndrey Ryabinin *(SORT(.init_array.*)) \ 514eb3057dfSFrantisek Hrbata *(.init_array) \ 515b99b87f7SPeter Oberparleiter VMLINUX_SYMBOL(__ctors_end) = .; 516b99b87f7SPeter Oberparleiter #else 517b99b87f7SPeter Oberparleiter #define KERNEL_CTORS() 518b99b87f7SPeter Oberparleiter #endif 519b99b87f7SPeter Oberparleiter 52001ba2bdcSSam Ravnborg /* init and exit section handling */ 521eb8f6890SSam Ravnborg #define INIT_DATA \ 522eb8f6890SSam Ravnborg *(.init.data) \ 523eb8f6890SSam Ravnborg MEM_DISCARD(init.data) \ 524b99b87f7SPeter Oberparleiter KERNEL_CTORS() \ 5254b3b4c5eSJohn Reiser MCOUNT_REC() \ 5269fd49328SSteven Rostedt *(.init.rodata) \ 527e4a9ea5eSSteven Rostedt FTRACE_EVENTS() \ 5283d56e331SSteven Rostedt TRACE_SYSCALLS() \ 529376e2424SMasami Hiramatsu KPROBE_BLACKLIST() \ 530aab94339SDirk Brandewie MEM_DISCARD(init.rodata) \ 531f2f6c255SPrashant Gaikwad CLK_OF_TABLES() \ 532f618c470SMarek Szyprowski RESERVEDMEM_OF_TABLES() \ 533ae278a93SStephen Warren CLKSRC_OF_TABLES() \ 5341cd076bfSWill Deacon IOMMU_OF_TABLES() \ 5356c3ff8b1SStephen Boyd CPU_METHOD_OF_TABLES() \ 536449e056cSDaniel Lezcano CPUIDLE_METHOD_OF_TABLES() \ 537f6e916b8SThomas Petazzoni KERNEL_DTB() \ 538b0b6abd3SRob Herring IRQCHIP_OF_MATCH_TABLE() \ 53946e589a3SMarc Zyngier ACPI_PROBE_TABLE(irqchip) \ 540c625f76aSMarc Zyngier ACPI_PROBE_TABLE(clksrc) \ 5412eaa7909SPeter Hurley EARLYCON_TABLE() 54201ba2bdcSSam Ravnborg 543eb8f6890SSam Ravnborg #define INIT_TEXT \ 544eb8f6890SSam Ravnborg *(.init.text) \ 545e41f501dSDmitry Vyukov *(.text.startup) \ 546eb8f6890SSam Ravnborg MEM_DISCARD(init.text) 547eb8f6890SSam Ravnborg 548eb8f6890SSam Ravnborg #define EXIT_DATA \ 549eb8f6890SSam Ravnborg *(.exit.data) \ 550e41f501dSDmitry Vyukov *(.fini_array) \ 551e41f501dSDmitry Vyukov *(.dtors) \ 552eb8f6890SSam Ravnborg MEM_DISCARD(exit.data) \ 553eb8f6890SSam Ravnborg MEM_DISCARD(exit.rodata) 554eb8f6890SSam Ravnborg 555eb8f6890SSam Ravnborg #define EXIT_TEXT \ 556eb8f6890SSam Ravnborg *(.exit.text) \ 557e41f501dSDmitry Vyukov *(.text.exit) \ 558eb8f6890SSam Ravnborg MEM_DISCARD(exit.text) 55901ba2bdcSSam Ravnborg 5607923f90fSSam Ravnborg #define EXIT_CALL \ 5617923f90fSSam Ravnborg *(.exitcall.exit) 5627923f90fSSam Ravnborg 563ef53dae8SSam Ravnborg /* 564ef53dae8SSam Ravnborg * bss (Block Started by Symbol) - uninitialized data 565ef53dae8SSam Ravnborg * zeroed during startup 566ef53dae8SSam Ravnborg */ 56704e448d9STim Abbott #define SBSS(sbss_align) \ 56804e448d9STim Abbott . = ALIGN(sbss_align); \ 569ef53dae8SSam Ravnborg .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ 570ef53dae8SSam Ravnborg *(.sbss) \ 571ef53dae8SSam Ravnborg *(.scommon) \ 572ef53dae8SSam Ravnborg } 573ef53dae8SSam Ravnborg 574c87728caSDavid Daney /* 575c87728caSDavid Daney * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra 576c87728caSDavid Daney * sections to the front of bss. 577c87728caSDavid Daney */ 578c87728caSDavid Daney #ifndef BSS_FIRST_SECTIONS 579c87728caSDavid Daney #define BSS_FIRST_SECTIONS 580c87728caSDavid Daney #endif 581c87728caSDavid Daney 582ef53dae8SSam Ravnborg #define BSS(bss_align) \ 583ef53dae8SSam Ravnborg . = ALIGN(bss_align); \ 584ef53dae8SSam Ravnborg .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ 585c87728caSDavid Daney BSS_FIRST_SECTIONS \ 5867c74df07STim Abbott *(.bss..page_aligned) \ 587ef53dae8SSam Ravnborg *(.dynbss) \ 588ef53dae8SSam Ravnborg *(.bss) \ 589ef53dae8SSam Ravnborg *(COMMON) \ 590ef53dae8SSam Ravnborg } 591ef53dae8SSam Ravnborg 592ef53dae8SSam Ravnborg /* 593ef53dae8SSam Ravnborg * DWARF debug sections. 594ef53dae8SSam Ravnborg * Symbols in the DWARF debugging sections are relative to 595ef53dae8SSam Ravnborg * the beginning of the section so we begin them at 0. 596ef53dae8SSam Ravnborg */ 597a7d0c210SPaolo 'Blaisorblade' Giarrusso #define DWARF_DEBUG \ 598a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 1 */ \ 599a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug 0 : { *(.debug) } \ 600a7d0c210SPaolo 'Blaisorblade' Giarrusso .line 0 : { *(.line) } \ 601a7d0c210SPaolo 'Blaisorblade' Giarrusso /* GNU DWARF 1 extensions */ \ 602a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_srcinfo 0 : { *(.debug_srcinfo) } \ 603a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_sfnames 0 : { *(.debug_sfnames) } \ 604a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 1.1 and DWARF 2 */ \ 605a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_aranges 0 : { *(.debug_aranges) } \ 606a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_pubnames 0 : { *(.debug_pubnames) } \ 607a7d0c210SPaolo 'Blaisorblade' Giarrusso /* DWARF 2 */ \ 608a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_info 0 : { *(.debug_info \ 609a7d0c210SPaolo 'Blaisorblade' Giarrusso .gnu.linkonce.wi.*) } \ 610a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_abbrev 0 : { *(.debug_abbrev) } \ 611a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_line 0 : { *(.debug_line) } \ 612a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_frame 0 : { *(.debug_frame) } \ 613a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_str 0 : { *(.debug_str) } \ 614a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_loc 0 : { *(.debug_loc) } \ 615a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_macinfo 0 : { *(.debug_macinfo) } \ 616a7d0c210SPaolo 'Blaisorblade' Giarrusso /* SGI/MIPS DWARF 2 extensions */ \ 617a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_weaknames 0 : { *(.debug_weaknames) } \ 618a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_funcnames 0 : { *(.debug_funcnames) } \ 619a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_typenames 0 : { *(.debug_typenames) } \ 620a7d0c210SPaolo 'Blaisorblade' Giarrusso .debug_varnames 0 : { *(.debug_varnames) } \ 621a7d0c210SPaolo 'Blaisorblade' Giarrusso 622a7d0c210SPaolo 'Blaisorblade' Giarrusso /* Stabs debugging sections. */ 623a7d0c210SPaolo 'Blaisorblade' Giarrusso #define STABS_DEBUG \ 624a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab 0 : { *(.stab) } \ 625a7d0c210SPaolo 'Blaisorblade' Giarrusso .stabstr 0 : { *(.stabstr) } \ 626a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.excl 0 : { *(.stab.excl) } \ 627a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.exclstr 0 : { *(.stab.exclstr) } \ 628a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.index 0 : { *(.stab.index) } \ 629a7d0c210SPaolo 'Blaisorblade' Giarrusso .stab.indexstr 0 : { *(.stab.indexstr) } \ 630a7d0c210SPaolo 'Blaisorblade' Giarrusso .comment 0 : { *(.comment) } 6319c9b8b38SJeremy Fitzhardinge 6326360b1fbSJan Beulich #ifdef CONFIG_GENERIC_BUG 6337664c5a1SJeremy Fitzhardinge #define BUG_TABLE \ 6347664c5a1SJeremy Fitzhardinge . = ALIGN(8); \ 6357664c5a1SJeremy Fitzhardinge __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ 636c6de0026SYoshinori Sato VMLINUX_SYMBOL(__start___bug_table) = .; \ 6377664c5a1SJeremy Fitzhardinge *(__bug_table) \ 638c6de0026SYoshinori Sato VMLINUX_SYMBOL(__stop___bug_table) = .; \ 6397664c5a1SJeremy Fitzhardinge } 6406360b1fbSJan Beulich #else 6416360b1fbSJan Beulich #define BUG_TABLE 6426360b1fbSJan Beulich #endif 6437664c5a1SJeremy Fitzhardinge 64463687a52SJan Beulich #ifdef CONFIG_PM_TRACE 64563687a52SJan Beulich #define TRACEDATA \ 64663687a52SJan Beulich . = ALIGN(4); \ 64763687a52SJan Beulich .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ 648c6de0026SYoshinori Sato VMLINUX_SYMBOL(__tracedata_start) = .; \ 64963687a52SJan Beulich *(.tracedata) \ 650c6de0026SYoshinori Sato VMLINUX_SYMBOL(__tracedata_end) = .; \ 65163687a52SJan Beulich } 65263687a52SJan Beulich #else 65363687a52SJan Beulich #define TRACEDATA 65463687a52SJan Beulich #endif 65563687a52SJan Beulich 6569c9b8b38SJeremy Fitzhardinge #define NOTES \ 657cbe87121SRoland McGrath .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ 658cbe87121SRoland McGrath VMLINUX_SYMBOL(__start_notes) = .; \ 659cbe87121SRoland McGrath *(.note.*) \ 660cbe87121SRoland McGrath VMLINUX_SYMBOL(__stop_notes) = .; \ 661cbe87121SRoland McGrath } 66261ce1efeSAndrew Morton 663ef53dae8SSam Ravnborg #define INIT_SETUP(initsetup_align) \ 664ef53dae8SSam Ravnborg . = ALIGN(initsetup_align); \ 665ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__setup_start) = .; \ 666ef53dae8SSam Ravnborg *(.init.setup) \ 667ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__setup_end) = .; 668ef53dae8SSam Ravnborg 669026cee00SPawel Moll #define INIT_CALLS_LEVEL(level) \ 670026cee00SPawel Moll VMLINUX_SYMBOL(__initcall##level##_start) = .; \ 671026cee00SPawel Moll *(.initcall##level##.init) \ 672026cee00SPawel Moll *(.initcall##level##s.init) \ 67361ce1efeSAndrew Morton 674ef53dae8SSam Ravnborg #define INIT_CALLS \ 675ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initcall_start) = .; \ 676026cee00SPawel Moll *(.initcallearly.init) \ 677026cee00SPawel Moll INIT_CALLS_LEVEL(0) \ 678026cee00SPawel Moll INIT_CALLS_LEVEL(1) \ 679026cee00SPawel Moll INIT_CALLS_LEVEL(2) \ 680026cee00SPawel Moll INIT_CALLS_LEVEL(3) \ 681026cee00SPawel Moll INIT_CALLS_LEVEL(4) \ 682026cee00SPawel Moll INIT_CALLS_LEVEL(5) \ 683026cee00SPawel Moll INIT_CALLS_LEVEL(rootfs) \ 684026cee00SPawel Moll INIT_CALLS_LEVEL(6) \ 685026cee00SPawel Moll INIT_CALLS_LEVEL(7) \ 686ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initcall_end) = .; 687ef53dae8SSam Ravnborg 688ef53dae8SSam Ravnborg #define CON_INITCALL \ 689ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__con_initcall_start) = .; \ 690ef53dae8SSam Ravnborg *(.con_initcall.init) \ 691ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__con_initcall_end) = .; 692ef53dae8SSam Ravnborg 693ef53dae8SSam Ravnborg #define SECURITY_INITCALL \ 694ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__security_initcall_start) = .; \ 695ef53dae8SSam Ravnborg *(.security_initcall.init) \ 696ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__security_initcall_end) = .; 697ef53dae8SSam Ravnborg 698ef53dae8SSam Ravnborg #ifdef CONFIG_BLK_DEV_INITRD 699ef53dae8SSam Ravnborg #define INIT_RAM_FS \ 700d8826262SMike Frysinger . = ALIGN(4); \ 701ef53dae8SSam Ravnborg VMLINUX_SYMBOL(__initramfs_start) = .; \ 702ef53dae8SSam Ravnborg *(.init.ramfs) \ 703ffe8018cSHendrik Brueckner . = ALIGN(8); \ 704ffe8018cSHendrik Brueckner *(.init.ramfs.info) 705ef53dae8SSam Ravnborg #else 706eadfe219SDavid Howells #define INIT_RAM_FS 707ef53dae8SSam Ravnborg #endif 708ef53dae8SSam Ravnborg 709023bf6f1STejun Heo /* 710023bf6f1STejun Heo * Default discarded sections. 711023bf6f1STejun Heo * 712023bf6f1STejun Heo * Some archs want to discard exit text/data at runtime rather than 713023bf6f1STejun Heo * link time due to cross-section references such as alt instructions, 714023bf6f1STejun Heo * bug table, eh_frame, etc. DISCARDS must be the last of output 715023bf6f1STejun Heo * section definitions so that such archs put those in earlier section 716023bf6f1STejun Heo * definitions. 717023bf6f1STejun Heo */ 718405d967dSTejun Heo #define DISCARDS \ 719405d967dSTejun Heo /DISCARD/ : { \ 720405d967dSTejun Heo EXIT_TEXT \ 721405d967dSTejun Heo EXIT_DATA \ 722023bf6f1STejun Heo EXIT_CALL \ 723405d967dSTejun Heo *(.discard) \ 724c7f52cdcSJeremy Fitzhardinge *(.discard.*) \ 725405d967dSTejun Heo } 726405d967dSTejun Heo 7273e5d8f97STejun Heo /** 7286ea0c34dSMike Frysinger * PERCPU_INPUT - the percpu input sections 7296ea0c34dSMike Frysinger * @cacheline: cacheline size 7306ea0c34dSMike Frysinger * 7316ea0c34dSMike Frysinger * The core percpu section names and core symbols which do not rely 7326ea0c34dSMike Frysinger * directly upon load addresses. 7336ea0c34dSMike Frysinger * 7346ea0c34dSMike Frysinger * @cacheline is used to align subsections to avoid false cacheline 7356ea0c34dSMike Frysinger * sharing between subsections for different purposes. 7366ea0c34dSMike Frysinger */ 7376ea0c34dSMike Frysinger #define PERCPU_INPUT(cacheline) \ 7386ea0c34dSMike Frysinger VMLINUX_SYMBOL(__per_cpu_start) = .; \ 7396ea0c34dSMike Frysinger *(.data..percpu..first) \ 7406ea0c34dSMike Frysinger . = ALIGN(PAGE_SIZE); \ 7416ea0c34dSMike Frysinger *(.data..percpu..page_aligned) \ 7426ea0c34dSMike Frysinger . = ALIGN(cacheline); \ 743330d2822SZhengyu He *(.data..percpu..read_mostly) \ 7446ea0c34dSMike Frysinger . = ALIGN(cacheline); \ 7456ea0c34dSMike Frysinger *(.data..percpu) \ 7466ea0c34dSMike Frysinger *(.data..percpu..shared_aligned) \ 7476ea0c34dSMike Frysinger VMLINUX_SYMBOL(__per_cpu_end) = .; 7486ea0c34dSMike Frysinger 7496ea0c34dSMike Frysinger /** 7506b7c38d5STejun Heo * PERCPU_VADDR - define output section for percpu area 75119df0c2fSTejun Heo * @cacheline: cacheline size 7523e5d8f97STejun Heo * @vaddr: explicit base address (optional) 7533e5d8f97STejun Heo * @phdr: destination PHDR (optional) 7543e5d8f97STejun Heo * 75519df0c2fSTejun Heo * Macro which expands to output section for percpu area. 75619df0c2fSTejun Heo * 75719df0c2fSTejun Heo * @cacheline is used to align subsections to avoid false cacheline 75819df0c2fSTejun Heo * sharing between subsections for different purposes. 75919df0c2fSTejun Heo * 76019df0c2fSTejun Heo * If @vaddr is not blank, it specifies explicit base address and all 76119df0c2fSTejun Heo * percpu symbols will be offset from the given address. If blank, 76219df0c2fSTejun Heo * @vaddr always equals @laddr + LOAD_OFFSET. 7633e5d8f97STejun Heo * 7643e5d8f97STejun Heo * @phdr defines the output PHDR to use if not blank. Be warned that 7653e5d8f97STejun Heo * output PHDR is sticky. If @phdr is specified, the next output 7663e5d8f97STejun Heo * section in the linker script will go there too. @phdr should have 7673e5d8f97STejun Heo * a leading colon. 7683e5d8f97STejun Heo * 7693ac6cffeSTejun Heo * Note that this macros defines __per_cpu_load as an absolute symbol. 7703ac6cffeSTejun Heo * If there is no need to put the percpu section at a predetermined 7710415b00dSTejun Heo * address, use PERCPU_SECTION. 7723e5d8f97STejun Heo */ 77319df0c2fSTejun Heo #define PERCPU_VADDR(cacheline, vaddr, phdr) \ 774dba3d36bSIngo Molnar VMLINUX_SYMBOL(__per_cpu_load) = .; \ 7753d9a854cSDenys Vlasenko .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \ 7766b7c38d5STejun Heo - LOAD_OFFSET) { \ 7776ea0c34dSMike Frysinger PERCPU_INPUT(cacheline) \ 7786b7c38d5STejun Heo } phdr \ 7793d9a854cSDenys Vlasenko . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu); 7803e5d8f97STejun Heo 7813e5d8f97STejun Heo /** 7820415b00dSTejun Heo * PERCPU_SECTION - define output section for percpu area, simple version 78319df0c2fSTejun Heo * @cacheline: cacheline size 7843e5d8f97STejun Heo * 7850415b00dSTejun Heo * Align to PAGE_SIZE and outputs output section for percpu area. This 7860415b00dSTejun Heo * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and 7873e5d8f97STejun Heo * __per_cpu_start will be identical. 7883ac6cffeSTejun Heo * 7890415b00dSTejun Heo * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) 79019df0c2fSTejun Heo * except that __per_cpu_load is defined as a relative symbol against 79119df0c2fSTejun Heo * .data..percpu which is required for relocatable x86_32 configuration. 7923e5d8f97STejun Heo */ 7930415b00dSTejun Heo #define PERCPU_SECTION(cacheline) \ 7940415b00dSTejun Heo . = ALIGN(PAGE_SIZE); \ 7953d9a854cSDenys Vlasenko .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ 7963ac6cffeSTejun Heo VMLINUX_SYMBOL(__per_cpu_load) = .; \ 7976ea0c34dSMike Frysinger PERCPU_INPUT(cacheline) \ 7983ac6cffeSTejun Heo } 799ef53dae8SSam Ravnborg 800ef53dae8SSam Ravnborg 801ef53dae8SSam Ravnborg /* 802ef53dae8SSam Ravnborg * Definition of the high level *_SECTION macros 803ef53dae8SSam Ravnborg * They will fit only a subset of the architectures 804ef53dae8SSam Ravnborg */ 805ef53dae8SSam Ravnborg 806ef53dae8SSam Ravnborg 807ef53dae8SSam Ravnborg /* 808ef53dae8SSam Ravnborg * Writeable data. 809ef53dae8SSam Ravnborg * All sections are combined in a single .data section. 810ef53dae8SSam Ravnborg * The sections following CONSTRUCTORS are arranged so their 811ef53dae8SSam Ravnborg * typical alignment matches. 812ef53dae8SSam Ravnborg * A cacheline is typical/always less than a PAGE_SIZE so 813ef53dae8SSam Ravnborg * the sections that has this restriction (or similar) 814ef53dae8SSam Ravnborg * is located before the ones requiring PAGE_SIZE alignment. 815ef53dae8SSam Ravnborg * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which 81625985edcSLucas De Marchi * matches the requirement of PAGE_ALIGNED_DATA. 817ef53dae8SSam Ravnborg * 8187923f90fSSam Ravnborg * use 0 as page_align if page_aligned data is not used */ 81973f1d939SPaul Mundt #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ 820ef53dae8SSam Ravnborg . = ALIGN(PAGE_SIZE); \ 821ef53dae8SSam Ravnborg .data : AT(ADDR(.data) - LOAD_OFFSET) { \ 82239a449d9STim Abbott INIT_TASK_DATA(inittask) \ 8231b208622STim Abbott NOSAVE_DATA \ 8241b208622STim Abbott PAGE_ALIGNED_DATA(pagealigned) \ 825ef53dae8SSam Ravnborg CACHELINE_ALIGNED_DATA(cacheline) \ 826ef53dae8SSam Ravnborg READ_MOSTLY_DATA(cacheline) \ 827ef53dae8SSam Ravnborg DATA_DATA \ 828ef53dae8SSam Ravnborg CONSTRUCTORS \ 829ef53dae8SSam Ravnborg } 830ef53dae8SSam Ravnborg 831ef53dae8SSam Ravnborg #define INIT_TEXT_SECTION(inittext_align) \ 832ef53dae8SSam Ravnborg . = ALIGN(inittext_align); \ 833ef53dae8SSam Ravnborg .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ 834ef53dae8SSam Ravnborg VMLINUX_SYMBOL(_sinittext) = .; \ 835ef53dae8SSam Ravnborg INIT_TEXT \ 836ef53dae8SSam Ravnborg VMLINUX_SYMBOL(_einittext) = .; \ 837ef53dae8SSam Ravnborg } 838ef53dae8SSam Ravnborg 839ef53dae8SSam Ravnborg #define INIT_DATA_SECTION(initsetup_align) \ 840ef53dae8SSam Ravnborg .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ 841ef53dae8SSam Ravnborg INIT_DATA \ 842ef53dae8SSam Ravnborg INIT_SETUP(initsetup_align) \ 843ef53dae8SSam Ravnborg INIT_CALLS \ 844ef53dae8SSam Ravnborg CON_INITCALL \ 845ef53dae8SSam Ravnborg SECURITY_INITCALL \ 846ef53dae8SSam Ravnborg INIT_RAM_FS \ 847ef53dae8SSam Ravnborg } 848ef53dae8SSam Ravnborg 84904e448d9STim Abbott #define BSS_SECTION(sbss_align, bss_align, stop_align) \ 85004e448d9STim Abbott . = ALIGN(sbss_align); \ 85104e448d9STim Abbott VMLINUX_SYMBOL(__bss_start) = .; \ 85204e448d9STim Abbott SBSS(sbss_align) \ 853ef53dae8SSam Ravnborg BSS(bss_align) \ 85404e448d9STim Abbott . = ALIGN(stop_align); \ 85504e448d9STim Abbott VMLINUX_SYMBOL(__bss_stop) = .; 856