| /* |
| * Helper macros to support writing architecture specific |
| * linker scripts. |
| * |
| * A minimal linker scripts has following content: |
| * [This is a sample, architectures may have special requiriements] |
| * |
| * OUTPUT_FORMAT(...) |
| * OUTPUT_ARCH(...) |
| * ENTRY(...) |
| * SECTIONS |
| * { |
| * . = START; |
| * __init_begin = .; |
| * HEAD_TEXT_SECTION |
| * INIT_TEXT_SECTION(PAGE_SIZE) |
| * INIT_DATA_SECTION(...) |
| * PERCPU_SECTION(CACHELINE_SIZE) |
| * __init_end = .; |
| * |
| * _stext = .; |
| * TEXT_SECTION = 0 |
| * _etext = .; |
| * |
| * _sdata = .; |
| * RO_DATA_SECTION(PAGE_SIZE) |
| * RW_DATA_SECTION(...) |
| * _edata = .; |
| * |
| * EXCEPTION_TABLE(...) |
| * NOTES |
| * |
| * BSS_SECTION(0, 0, 0) |
| * _end = .; |
| * |
| * STABS_DEBUG |
| * DWARF_DEBUG |
| * |
| * DISCARDS // must be the last |
| * } |
| * |
| * [__init_begin, __init_end] is the init section that may be freed after init |
| * // __init_begin and __init_end should be page aligned, so that we can |
| * // free the whole .init memory |
| * [_stext, _etext] is the text section |
| * [_sdata, _edata] is the data section |
| * |
| * Some of the included output section have their own set of constants. |
| * Examples are: [__initramfs_start, __initramfs_end] for initramfs and |
| * [__nosave_begin, __nosave_end] for the nosave data |
| */ |
| |
| #ifndef LOAD_OFFSET |
| #define LOAD_OFFSET 0 |
| #endif |
| |
| #ifndef SYMTAB_KEEP |
| #define SYMTAB_KEEP KEEP(*(SORT(___ksymtab+*))) |
| #define SYMTAB_KEEP_GPL KEEP(*(SORT(___ksymtab_gpl+*))) |
| #endif |
| |
| #ifndef SYMTAB_DISCARD |
| #define SYMTAB_DISCARD |
| #define SYMTAB_DISCARD_GPL |
| #endif |
| |
| /* Align . to a 8 byte boundary equals to maximum function alignment. */ |
| #define ALIGN_FUNCTION() . = ALIGN(8) |
| |
| /* |
| * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which |
| * generates .data.identifier sections, which need to be pulled in with |
| * .data. We don't want to pull in .data..other sections, which Linux |
| * has defined. Same for text and bss. |
| * |
| * RODATA_MAIN is not used because existing code already defines .rodata.x |
| * sections to be brought in with rodata. |
| */ |
| #if defined(CONFIG_LD_DEAD_CODE_DATA_ELIMINATION) || defined(CONFIG_LTO_CLANG) |
| #define TEXT_MAIN .text .text.[0-9a-zA-Z_]* |
| #define TEXT_CFI_MAIN .text.[0-9a-zA-Z_]*.cfi |
| #define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..LPBX* |
| #define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]* |
| #define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]* |
| #define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* |
| #define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]* |
| #else |
| #define TEXT_MAIN .text |
| #define TEXT_CFI_MAIN .text.cfi |
| #define DATA_MAIN .data |
| #define SDATA_MAIN .sdata |
| #define RODATA_MAIN .rodata |
| #define BSS_MAIN .bss |
| #define SBSS_MAIN .sbss |
| #endif |
| |
| /* |
| * Align to a 32 byte boundary equal to the |
| * alignment gcc 4.5 uses for a struct |
| */ |
| #define STRUCT_ALIGNMENT 32 |
| #define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT) |
| |
| /* The actual configuration determine if the init/exit sections |
| * are handled as text/data or they can be discarded (which |
| * often happens at runtime) |
| */ |
| #ifdef CONFIG_HOTPLUG_CPU |
| #define CPU_KEEP(sec) *(.cpu##sec) |
| #define CPU_DISCARD(sec) |
| #else |
| #define CPU_KEEP(sec) |
| #define CPU_DISCARD(sec) *(.cpu##sec) |
| #endif |
| |
| #if defined(CONFIG_MEMORY_HOTPLUG) |
| #define MEM_KEEP(sec) *(.mem##sec) |
| #define MEM_DISCARD(sec) |
| #else |
| #define MEM_KEEP(sec) |
| #define MEM_DISCARD(sec) *(.mem##sec) |
| #endif |
| |
| #ifdef CONFIG_FTRACE_MCOUNT_RECORD |
| #define MCOUNT_REC() . = ALIGN(8); \ |
| __start_mcount_loc = .; \ |
| KEEP(*(__mcount_loc)) \ |
| __stop_mcount_loc = .; |
| #else |
| #define MCOUNT_REC() |
| #endif |
| |
| #ifdef CONFIG_TRACE_BRANCH_PROFILING |
| #define LIKELY_PROFILE() __start_annotated_branch_profile = .; \ |
| KEEP(*(_ftrace_annotated_branch)) \ |
| __stop_annotated_branch_profile = .; |
| #else |
| #define LIKELY_PROFILE() |
| #endif |
| |
| #ifdef CONFIG_PROFILE_ALL_BRANCHES |
| #define BRANCH_PROFILE() __start_branch_profile = .; \ |
| KEEP(*(_ftrace_branch)) \ |
| __stop_branch_profile = .; |
| #else |
| #define BRANCH_PROFILE() |
| #endif |
| |
| #ifdef CONFIG_KPROBES |
| #define KPROBE_BLACKLIST() . = ALIGN(8); \ |
| __start_kprobe_blacklist = .; \ |
| KEEP(*(_kprobe_blacklist)) \ |
| __stop_kprobe_blacklist = .; |
| #else |
| #define KPROBE_BLACKLIST() |
| #endif |
| |
| #ifdef CONFIG_FUNCTION_ERROR_INJECTION |
| #define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \ |
| __start_error_injection_whitelist = .; \ |
| KEEP(*(_error_injection_whitelist)) \ |
| __stop_error_injection_whitelist = .; |
| #else |
| #define ERROR_INJECT_WHITELIST() |
| #endif |
| |
| #ifdef CONFIG_EVENT_TRACING |
| #define FTRACE_EVENTS() . = ALIGN(8); \ |
| __start_ftrace_events = .; \ |
| KEEP(*(_ftrace_events)) \ |
| __stop_ftrace_events = .; \ |
| __start_ftrace_eval_maps = .; \ |
| KEEP(*(_ftrace_eval_map)) \ |
| __stop_ftrace_eval_maps = .; |
| #else |
| #define FTRACE_EVENTS() |
| #endif |
| |
| #ifdef CONFIG_TRACING |
| #define TRACE_PRINTKS() __start___trace_bprintk_fmt = .; \ |
| KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \ |
| __stop___trace_bprintk_fmt = .; |
| #define TRACEPOINT_STR() __start___tracepoint_str = .; \ |
| KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \ |
| __stop___tracepoint_str = .; |
| #else |
| #define TRACE_PRINTKS() |
| #define TRACEPOINT_STR() |
| #endif |
| |
| #ifdef CONFIG_FTRACE_SYSCALLS |
| #define TRACE_SYSCALLS() . = ALIGN(8); \ |
| __start_syscalls_metadata = .; \ |
| KEEP(*(__syscalls_metadata)) \ |
| __stop_syscalls_metadata = .; |
| #else |
| #define TRACE_SYSCALLS() |
| #endif |
| |
| #ifdef CONFIG_BPF_EVENTS |
| #define BPF_RAW_TP() STRUCT_ALIGN(); \ |
| __start__bpf_raw_tp = .; \ |
| KEEP(*(__bpf_raw_tp_map)) \ |
| __stop__bpf_raw_tp = .; |
| #else |
| #define BPF_RAW_TP() |
| #endif |
| |
| #ifdef CONFIG_SERIAL_EARLYCON |
| #define EARLYCON_TABLE() . = ALIGN(8); \ |
| __earlycon_table = .; \ |
| KEEP(*(__earlycon_table)) \ |
| __earlycon_table_end = .; |
| #else |
| #define EARLYCON_TABLE() |
| #endif |
| |
| #define ___OF_TABLE(cfg, name) _OF_TABLE_##cfg(name) |
| #define __OF_TABLE(cfg, name) ___OF_TABLE(cfg, name) |
| #define OF_TABLE(cfg, name) __OF_TABLE(IS_ENABLED(cfg), name) |
| #define _OF_TABLE_0(name) |
| #define _OF_TABLE_1(name) \ |
| . = ALIGN(8); \ |
| __##name##_of_table = .; \ |
| KEEP(*(__##name##_of_table)) \ |
| KEEP(*(__##name##_of_table_end)) |
| |
| #define TIMER_OF_TABLES() OF_TABLE(CONFIG_TIMER_OF, timer) |
| #define IRQCHIP_OF_MATCH_TABLE() OF_TABLE(CONFIG_IRQCHIP, irqchip) |
| #define CLK_OF_TABLES() OF_TABLE(CONFIG_COMMON_CLK, clk) |
| #define RESERVEDMEM_OF_TABLES() OF_TABLE(CONFIG_OF_RESERVED_MEM, reservedmem) |
| #define CPU_METHOD_OF_TABLES() OF_TABLE(CONFIG_SMP, cpu_method) |
| #define CPUIDLE_METHOD_OF_TABLES() OF_TABLE(CONFIG_CPU_IDLE, cpuidle_method) |
| |
| #ifdef CONFIG_ACPI |
| #define ACPI_PROBE_TABLE(name) \ |
| . = ALIGN(8); \ |
| __##name##_acpi_probe_table = .; \ |
| KEEP(*(__##name##_acpi_probe_table)) \ |
| __##name##_acpi_probe_table_end = .; |
| #else |
| #define ACPI_PROBE_TABLE(name) |
| #endif |
| |
| #define KERNEL_DTB() \ |
| STRUCT_ALIGN(); \ |
| __dtb_start = .; \ |
| KEEP(*(.dtb.init.rodata)) \ |
| __dtb_end = .; |
| |
| /* |
| * .data section |
| */ |
| #define DATA_DATA \ |
| *(.xiptext) \ |
| *(DATA_MAIN) \ |
| *(.ref.data) \ |
| *(.data..shared_aligned) /* percpu related */ \ |
| MEM_KEEP(init.data*) \ |
| MEM_KEEP(exit.data*) \ |
| *(.data.unlikely) \ |
| __start_once = .; \ |
| *(.data.once) \ |
| __end_once = .; \ |
| STRUCT_ALIGN(); \ |
| *(__tracepoints) \ |
| /* implement dynamic printk debug */ \ |
| . = ALIGN(8); \ |
| __start___jump_table = .; \ |
| KEEP(*(__jump_table)) \ |
| __stop___jump_table = .; \ |
| . = ALIGN(8); \ |
| __start___verbose = .; \ |
| KEEP(*(__verbose)) \ |
| __stop___verbose = .; \ |
| LIKELY_PROFILE() \ |
| BRANCH_PROFILE() \ |
| TRACE_PRINTKS() \ |
| BPF_RAW_TP() \ |
| TRACEPOINT_STR() |
| |
| /* |
| * Data section helpers |
| */ |
| #define NOSAVE_DATA \ |
| . = ALIGN(PAGE_SIZE); \ |
| __nosave_begin = .; \ |
| *(.data..nosave) \ |
| . = ALIGN(PAGE_SIZE); \ |
| __nosave_end = .; |
| |
| #define PAGE_ALIGNED_DATA(page_align) \ |
| . = ALIGN(page_align); \ |
| *(.data..page_aligned) |
| |
| #define READ_MOSTLY_DATA(align) \ |
| . = ALIGN(align); \ |
| *(.data..read_mostly) \ |
| . = ALIGN(align); |
| |
| #define CACHELINE_ALIGNED_DATA(align) \ |
| . = ALIGN(align); \ |
| *(.data..cacheline_aligned) |
| |
| #define INIT_TASK_DATA(align) \ |
| . = ALIGN(align); \ |
| __start_init_task = .; \ |
| init_thread_union = .; \ |
| init_stack = .; \ |
| KEEP(*(.data..init_task)) \ |
| KEEP(*(.data..init_thread_info)) \ |
| . = __start_init_task + THREAD_SIZE; \ |
| __end_init_task = .; |
| |
| /* |
| * Allow architectures to handle ro_after_init data on their |
| * own by defining an empty RO_AFTER_INIT_DATA. |
| */ |
| #ifndef RO_AFTER_INIT_DATA |
| #define RO_AFTER_INIT_DATA \ |
| __start_ro_after_init = .; \ |
| *(.data..ro_after_init) \ |
| __end_ro_after_init = .; |
| #endif |
| |
| /* |
| * Read only Data |
| */ |
| #define RO_DATA_SECTION(align) \ |
| . = ALIGN((align)); \ |
| .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \ |
| __start_rodata = .; \ |
| *(.rodata) *(.rodata.*) \ |
| RO_AFTER_INIT_DATA /* Read only after init */ \ |
| KEEP(*(__vermagic)) /* Kernel version magic */ \ |
| . = ALIGN(8); \ |
| __start___tracepoints_ptrs = .; \ |
| KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \ |
| __stop___tracepoints_ptrs = .; \ |
| *(__tracepoints_strings)/* Tracepoints: strings */ \ |
| } \ |
| \ |
| .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \ |
| *(.rodata1) \ |
| } \ |
| \ |
| /* PCI quirks */ \ |
| .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \ |
| __start_pci_fixups_early = .; \ |
| KEEP(*(.pci_fixup_early)) \ |
| __end_pci_fixups_early = .; \ |
| __start_pci_fixups_header = .; \ |
| KEEP(*(.pci_fixup_header)) \ |
| __end_pci_fixups_header = .; \ |
| __start_pci_fixups_final = .; \ |
| KEEP(*(.pci_fixup_final)) \ |
| __end_pci_fixups_final = .; \ |
| __start_pci_fixups_enable = .; \ |
| KEEP(*(.pci_fixup_enable)) \ |
| __end_pci_fixups_enable = .; \ |
| __start_pci_fixups_resume = .; \ |
| KEEP(*(.pci_fixup_resume)) \ |
| __end_pci_fixups_resume = .; \ |
| __start_pci_fixups_resume_early = .; \ |
| KEEP(*(.pci_fixup_resume_early)) \ |
| __end_pci_fixups_resume_early = .; \ |
| __start_pci_fixups_suspend = .; \ |
| KEEP(*(.pci_fixup_suspend)) \ |
| __end_pci_fixups_suspend = .; \ |
| __start_pci_fixups_suspend_late = .; \ |
| KEEP(*(.pci_fixup_suspend_late)) \ |
| __end_pci_fixups_suspend_late = .; \ |
| } \ |
| \ |
| /* Built-in firmware blobs */ \ |
| .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \ |
| __start_builtin_fw = .; \ |
| KEEP(*(.builtin_fw)) \ |
| __end_builtin_fw = .; \ |
| } \ |
| \ |
| TRACEDATA \ |
| \ |
| /* Kernel symbol table: Normal symbols */ \ |
| __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ |
| __start___ksymtab = .; \ |
| SYMTAB_KEEP \ |
| __stop___ksymtab = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: GPL-only symbols */ \ |
| __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \ |
| __start___ksymtab_gpl = .; \ |
| SYMTAB_KEEP_GPL \ |
| __stop___ksymtab_gpl = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: Normal unused symbols */ \ |
| __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \ |
| __start___ksymtab_unused = .; \ |
| KEEP(*(SORT(___ksymtab_unused+*))) \ |
| __stop___ksymtab_unused = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: GPL-only unused symbols */ \ |
| __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \ |
| __start___ksymtab_unused_gpl = .; \ |
| KEEP(*(SORT(___ksymtab_unused_gpl+*))) \ |
| __stop___ksymtab_unused_gpl = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: GPL-future-only symbols */ \ |
| __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \ |
| __start___ksymtab_gpl_future = .; \ |
| KEEP(*(SORT(___ksymtab_gpl_future+*))) \ |
| __stop___ksymtab_gpl_future = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: Normal symbols */ \ |
| __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \ |
| __start___kcrctab = .; \ |
| KEEP(*(SORT(___kcrctab+*))) \ |
| __stop___kcrctab = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: GPL-only symbols */ \ |
| __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \ |
| __start___kcrctab_gpl = .; \ |
| KEEP(*(SORT(___kcrctab_gpl+*))) \ |
| __stop___kcrctab_gpl = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: Normal unused symbols */ \ |
| __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \ |
| __start___kcrctab_unused = .; \ |
| KEEP(*(SORT(___kcrctab_unused+*))) \ |
| __stop___kcrctab_unused = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: GPL-only unused symbols */ \ |
| __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \ |
| __start___kcrctab_unused_gpl = .; \ |
| KEEP(*(SORT(___kcrctab_unused_gpl+*))) \ |
| __stop___kcrctab_unused_gpl = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: GPL-future-only symbols */ \ |
| __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \ |
| __start___kcrctab_gpl_future = .; \ |
| KEEP(*(SORT(___kcrctab_gpl_future+*))) \ |
| __stop___kcrctab_gpl_future = .; \ |
| } \ |
| \ |
| /* Kernel symbol table: strings */ \ |
| __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ |
| *(__ksymtab_strings+*) \ |
| } \ |
| \ |
| /* __*init sections */ \ |
| __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \ |
| *(.ref.rodata) \ |
| MEM_KEEP(init.rodata) \ |
| MEM_KEEP(exit.rodata) \ |
| } \ |
| \ |
| /* Built-in module parameters. */ \ |
| __param : AT(ADDR(__param) - LOAD_OFFSET) { \ |
| __start___param = .; \ |
| KEEP(*(__param)) \ |
| __stop___param = .; \ |
| } \ |
| \ |
| /* Built-in module versions. */ \ |
| __modver : AT(ADDR(__modver) - LOAD_OFFSET) { \ |
| __start___modver = .; \ |
| KEEP(*(__modver)) \ |
| __stop___modver = .; \ |
| . = ALIGN((align)); \ |
| __end_rodata = .; \ |
| } \ |
| . = ALIGN((align)); |
| |
| /* RODATA & RO_DATA provided for backward compatibility. |
| * All archs are supposed to use RO_DATA() */ |
| #define RODATA RO_DATA_SECTION(4096) |
| #define RO_DATA(align) RO_DATA_SECTION(align) |
| |
| #define SECURITY_INIT \ |
| .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \ |
| __security_initcall_start = .; \ |
| KEEP(*(.security_initcall.init)) \ |
| __security_initcall_end = .; \ |
| } |
| |
| /* |
| * .text section. Map to function alignment to avoid address changes |
| * during second ld run in second ld pass when generating System.map |
| * |
| * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead |
| * code elimination is enabled, so these sections should be converted |
| * to use ".." first. |
| */ |
| #define TEXT_TEXT \ |
| ALIGN_FUNCTION(); \ |
| *(.text.hot TEXT_MAIN .text.fixup .text.unlikely) \ |
| *(TEXT_CFI_MAIN) \ |
| *(.text..refcount) \ |
| *(.text..ftrace) \ |
| *(.ref.text) \ |
| MEM_KEEP(init.text*) \ |
| MEM_KEEP(exit.text*) \ |
| |
| |
| /* sched.text is aling to function alignment to secure we have same |
| * address even at second ld pass when generating System.map */ |
| #define SCHED_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __sched_text_start = .; \ |
| *(.sched.text) \ |
| __sched_text_end = .; |
| |
| /* spinlock.text is aling to function alignment to secure we have same |
| * address even at second ld pass when generating System.map */ |
| #define LOCK_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __lock_text_start = .; \ |
| *(.spinlock.text) \ |
| __lock_text_end = .; |
| |
| #define CPUIDLE_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __cpuidle_text_start = .; \ |
| *(.cpuidle.text) \ |
| __cpuidle_text_end = .; |
| |
| #define KPROBES_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __kprobes_text_start = .; \ |
| *(.kprobes.text) \ |
| __kprobes_text_end = .; |
| |
| #define ENTRY_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __entry_text_start = .; \ |
| *(.entry.text) \ |
| __entry_text_end = .; |
| |
| #define IRQENTRY_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __irqentry_text_start = .; \ |
| *(.irqentry.text) \ |
| __irqentry_text_end = .; |
| |
| #define SOFTIRQENTRY_TEXT \ |
| ALIGN_FUNCTION(); \ |
| __softirqentry_text_start = .; \ |
| *(.softirqentry.text) \ |
| __softirqentry_text_end = .; |
| |
| /* Section used for early init (in .S files) */ |
| #define HEAD_TEXT KEEP(*(.head.text)) |
| |
| #define HEAD_TEXT_SECTION \ |
| .head.text : AT(ADDR(.head.text) - LOAD_OFFSET) { \ |
| HEAD_TEXT \ |
| } |
| |
| /* |
| * Exception table |
| */ |
| #define EXCEPTION_TABLE(align) \ |
| . = ALIGN(align); \ |
| __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \ |
| __start___ex_table = .; \ |
| KEEP(*(__ex_table)) \ |
| __stop___ex_table = .; \ |
| } |
| |
| /* |
| * Init task |
| */ |
| #define INIT_TASK_DATA_SECTION(align) \ |
| . = ALIGN(align); \ |
| .data..init_task : AT(ADDR(.data..init_task) - LOAD_OFFSET) { \ |
| INIT_TASK_DATA(align) \ |
| } |
| |
| #ifdef CONFIG_CONSTRUCTORS |
| #define KERNEL_CTORS() . = ALIGN(8); \ |
| __ctors_start = .; \ |
| KEEP(*(.ctors)) \ |
| KEEP(*(SORT(.init_array.*))) \ |
| KEEP(*(.init_array)) \ |
| __ctors_end = .; |
| #else |
| #define KERNEL_CTORS() |
| #endif |
| |
| /* init and exit section handling */ |
| #define INIT_DATA \ |
| KEEP(*(SORT(___kentry+*))) \ |
| *(.init.data init.data.*) \ |
| MEM_DISCARD(init.data*) \ |
| KERNEL_CTORS() \ |
| MCOUNT_REC() \ |
| *(.init.rodata .init.rodata.*) \ |
| FTRACE_EVENTS() \ |
| TRACE_SYSCALLS() \ |
| KPROBE_BLACKLIST() \ |
| ERROR_INJECT_WHITELIST() \ |
| MEM_DISCARD(init.rodata) \ |
| CLK_OF_TABLES() \ |
| RESERVEDMEM_OF_TABLES() \ |
| TIMER_OF_TABLES() \ |
| CPU_METHOD_OF_TABLES() \ |
| CPUIDLE_METHOD_OF_TABLES() \ |
| KERNEL_DTB() \ |
| IRQCHIP_OF_MATCH_TABLE() \ |
| ACPI_PROBE_TABLE(irqchip) \ |
| ACPI_PROBE_TABLE(timer) \ |
| EARLYCON_TABLE() |
| |
| #define INIT_TEXT \ |
| *(.init.text .init.text.*) \ |
| *(.text.startup) \ |
| MEM_DISCARD(init.text*) |
| |
| #define EXIT_DATA \ |
| *(.exit.data .exit.data.*) \ |
| *(.fini_array .fini_array.*) \ |
| *(.dtors .dtors.*) \ |
| MEM_DISCARD(exit.data*) \ |
| MEM_DISCARD(exit.rodata*) |
| |
| #define EXIT_TEXT \ |
| *(.exit.text) \ |
| *(.text.exit) \ |
| MEM_DISCARD(exit.text) |
| |
| #define EXIT_CALL \ |
| *(.exitcall.exit) |
| |
| /* |
| * bss (Block Started by Symbol) - uninitialized data |
| * zeroed during startup |
| */ |
| #define SBSS(sbss_align) \ |
| . = ALIGN(sbss_align); \ |
| .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \ |
| *(.dynsbss) \ |
| *(SBSS_MAIN) \ |
| *(.scommon) \ |
| } |
| |
| /* |
| * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra |
| * sections to the front of bss. |
| */ |
| #ifndef BSS_FIRST_SECTIONS |
| #define BSS_FIRST_SECTIONS |
| #endif |
| |
| #define BSS(bss_align) \ |
| . = ALIGN(bss_align); \ |
| .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \ |
| BSS_FIRST_SECTIONS \ |
| *(.bss..page_aligned) \ |
| *(.dynbss) \ |
| *(BSS_MAIN) \ |
| *(COMMON) \ |
| } |
| |
| /* |
| * DWARF debug sections. |
| * Symbols in the DWARF debugging sections are relative to |
| * the beginning of the section so we begin them at 0. |
| */ |
| #define DWARF_DEBUG \ |
| /* DWARF 1 */ \ |
| .debug 0 : { *(.debug) } \ |
| .line 0 : { *(.line) } \ |
| /* GNU DWARF 1 extensions */ \ |
| .debug_srcinfo 0 : { *(.debug_srcinfo) } \ |
| .debug_sfnames 0 : { *(.debug_sfnames) } \ |
| /* DWARF 1.1 and DWARF 2 */ \ |
| .debug_aranges 0 : { *(.debug_aranges) } \ |
| .debug_pubnames 0 : { *(.debug_pubnames) } \ |
| /* DWARF 2 */ \ |
| .debug_info 0 : { *(.debug_info \ |
| .gnu.linkonce.wi.*) } \ |
| .debug_abbrev 0 : { *(.debug_abbrev) } \ |
| .debug_line 0 : { *(.debug_line) } \ |
| .debug_frame 0 : { *(.debug_frame) } \ |
| .debug_str 0 : { *(.debug_str) } \ |
| .debug_loc 0 : { *(.debug_loc) } \ |
| .debug_macinfo 0 : { *(.debug_macinfo) } \ |
| .debug_pubtypes 0 : { *(.debug_pubtypes) } \ |
| /* DWARF 3 */ \ |
| .debug_ranges 0 : { *(.debug_ranges) } \ |
| /* SGI/MIPS DWARF 2 extensions */ \ |
| .debug_weaknames 0 : { *(.debug_weaknames) } \ |
| .debug_funcnames 0 : { *(.debug_funcnames) } \ |
| .debug_typenames 0 : { *(.debug_typenames) } \ |
| .debug_varnames 0 : { *(.debug_varnames) } \ |
| /* GNU DWARF 2 extensions */ \ |
| .debug_gnu_pubnames 0 : { *(.debug_gnu_pubnames) } \ |
| .debug_gnu_pubtypes 0 : { *(.debug_gnu_pubtypes) } \ |
| /* DWARF 4 */ \ |
| .debug_types 0 : { *(.debug_types) } \ |
| /* DWARF 5 */ \ |
| .debug_macro 0 : { *(.debug_macro) } \ |
| .debug_addr 0 : { *(.debug_addr) } |
| |
| /* Stabs debugging sections. */ |
| #define STABS_DEBUG \ |
| .stab 0 : { *(.stab) } \ |
| .stabstr 0 : { *(.stabstr) } \ |
| .stab.excl 0 : { *(.stab.excl) } \ |
| .stab.exclstr 0 : { *(.stab.exclstr) } \ |
| .stab.index 0 : { *(.stab.index) } \ |
| .stab.indexstr 0 : { *(.stab.indexstr) } \ |
| .comment 0 : { *(.comment) } |
| |
| #ifdef CONFIG_GENERIC_BUG |
| #define BUG_TABLE \ |
| . = ALIGN(8); \ |
| __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \ |
| __start___bug_table = .; \ |
| KEEP(*(__bug_table)) \ |
| __stop___bug_table = .; \ |
| } |
| #else |
| #define BUG_TABLE |
| #endif |
| |
| #ifdef CONFIG_UNWINDER_ORC |
| #define ORC_UNWIND_TABLE \ |
| . = ALIGN(4); \ |
| .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \ |
| __start_orc_unwind_ip = .; \ |
| KEEP(*(.orc_unwind_ip)) \ |
| __stop_orc_unwind_ip = .; \ |
| } \ |
| . = ALIGN(2); \ |
| .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \ |
| __start_orc_unwind = .; \ |
| KEEP(*(.orc_unwind)) \ |
| __stop_orc_unwind = .; \ |
| } \ |
| . = ALIGN(4); \ |
| .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \ |
| orc_lookup = .; \ |
| . += (((SIZEOF(.text) + LOOKUP_BLOCK_SIZE - 1) / \ |
| LOOKUP_BLOCK_SIZE) + 1) * 4; \ |
| orc_lookup_end = .; \ |
| } |
| #else |
| #define ORC_UNWIND_TABLE |
| #endif |
| |
| #ifdef CONFIG_PM_TRACE |
| #define TRACEDATA \ |
| . = ALIGN(4); \ |
| .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \ |
| __tracedata_start = .; \ |
| KEEP(*(.tracedata)) \ |
| __tracedata_end = .; \ |
| } |
| #else |
| #define TRACEDATA |
| #endif |
| |
| #define NOTES \ |
| .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \ |
| __start_notes = .; \ |
| KEEP(*(.note.*)) \ |
| __stop_notes = .; \ |
| } |
| |
| #define INIT_SETUP(initsetup_align) \ |
| . = ALIGN(initsetup_align); \ |
| __setup_start = .; \ |
| KEEP(*(.init.setup)) \ |
| __setup_end = .; |
| |
| #define INIT_CALLS_LEVEL(level) \ |
| __initcall##level##_start = .; \ |
| KEEP(*(.initcall##level##.init)) \ |
| KEEP(*(.initcall##level##s.init)) \ |
| |
| #define INIT_CALLS \ |
| __initcall_start = .; \ |
| KEEP(*(.initcallearly.init)) \ |
| INIT_CALLS_LEVEL(0) \ |
| INIT_CALLS_LEVEL(1) \ |
| INIT_CALLS_LEVEL(2) \ |
| INIT_CALLS_LEVEL(3) \ |
| INIT_CALLS_LEVEL(4) \ |
| INIT_CALLS_LEVEL(5) \ |
| INIT_CALLS_LEVEL(rootfs) \ |
| INIT_CALLS_LEVEL(6) \ |
| INIT_CALLS_LEVEL(7) \ |
| __initcall_end = .; |
| |
| #define CON_INITCALL \ |
| __con_initcall_start = .; \ |
| KEEP(*(.con_initcall.init)) \ |
| __con_initcall_end = .; |
| |
| #define SECURITY_INITCALL \ |
| __security_initcall_start = .; \ |
| KEEP(*(.security_initcall.init)) \ |
| __security_initcall_end = .; |
| |
| #ifdef CONFIG_BLK_DEV_INITRD |
| #define INIT_RAM_FS \ |
| . = ALIGN(4); \ |
| __initramfs_start = .; \ |
| KEEP(*(.init.ramfs)) \ |
| . = ALIGN(8); \ |
| KEEP(*(.init.ramfs.info)) |
| #else |
| #define INIT_RAM_FS |
| #endif |
| |
| /* |
| * Memory encryption operates on a page basis. Since we need to clear |
| * the memory encryption mask for this section, it needs to be aligned |
| * on a page boundary and be a page-size multiple in length. |
| * |
| * Note: We use a separate section so that only this section gets |
| * decrypted to avoid exposing more than we wish. |
| */ |
| #ifdef CONFIG_AMD_MEM_ENCRYPT |
| #define PERCPU_DECRYPTED_SECTION \ |
| . = ALIGN(PAGE_SIZE); \ |
| *(.data..percpu..decrypted) \ |
| . = ALIGN(PAGE_SIZE); |
| #else |
| #define PERCPU_DECRYPTED_SECTION |
| #endif |
| |
| |
| /* |
| * Default discarded sections. |
| * |
| * Some archs want to discard exit text/data at runtime rather than |
| * link time due to cross-section references such as alt instructions, |
| * bug table, eh_frame, etc. DISCARDS must be the last of output |
| * section definitions so that such archs put those in earlier section |
| * definitions. |
| */ |
| #define DISCARDS \ |
| /DISCARD/ : { \ |
| EXIT_TEXT \ |
| EXIT_DATA \ |
| EXIT_CALL \ |
| SYMTAB_DISCARD \ |
| SYMTAB_DISCARD_GPL \ |
| *(.discard) \ |
| *(.discard.*) \ |
| } |
| |
| /** |
| * PERCPU_INPUT - the percpu input sections |
| * @cacheline: cacheline size |
| * |
| * The core percpu section names and core symbols which do not rely |
| * directly upon load addresses. |
| * |
| * @cacheline is used to align subsections to avoid false cacheline |
| * sharing between subsections for different purposes. |
| */ |
| #define PERCPU_INPUT(cacheline) \ |
| __per_cpu_start = .; \ |
| *(.data..percpu..first) \ |
| . = ALIGN(PAGE_SIZE); \ |
| *(.data..percpu..page_aligned) \ |
| . = ALIGN(cacheline); \ |
| *(.data..percpu..read_mostly) \ |
| . = ALIGN(cacheline); \ |
| *(.data..percpu) \ |
| *(.data..percpu..shared_aligned) \ |
| PERCPU_DECRYPTED_SECTION \ |
| __per_cpu_end = .; |
| |
| /** |
| * PERCPU_VADDR - define output section for percpu area |
| * @cacheline: cacheline size |
| * @vaddr: explicit base address (optional) |
| * @phdr: destination PHDR (optional) |
| * |
| * Macro which expands to output section for percpu area. |
| * |
| * @cacheline is used to align subsections to avoid false cacheline |
| * sharing between subsections for different purposes. |
| * |
| * If @vaddr is not blank, it specifies explicit base address and all |
| * percpu symbols will be offset from the given address. If blank, |
| * @vaddr always equals @laddr + LOAD_OFFSET. |
| * |
| * @phdr defines the output PHDR to use if not blank. Be warned that |
| * output PHDR is sticky. If @phdr is specified, the next output |
| * section in the linker script will go there too. @phdr should have |
| * a leading colon. |
| * |
| * Note that this macros defines __per_cpu_load as an absolute symbol. |
| * If there is no need to put the percpu section at a predetermined |
| * address, use PERCPU_SECTION. |
| */ |
| #define PERCPU_VADDR(cacheline, vaddr, phdr) \ |
| __per_cpu_load = .; \ |
| .data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) { \ |
| PERCPU_INPUT(cacheline) \ |
| } phdr \ |
| . = __per_cpu_load + SIZEOF(.data..percpu); |
| |
| /** |
| * PERCPU_SECTION - define output section for percpu area, simple version |
| * @cacheline: cacheline size |
| * |
| * Align to PAGE_SIZE and outputs output section for percpu area. This |
| * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and |
| * __per_cpu_start will be identical. |
| * |
| * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,) |
| * except that __per_cpu_load is defined as a relative symbol against |
| * .data..percpu which is required for relocatable x86_32 configuration. |
| */ |
| #define PERCPU_SECTION(cacheline) \ |
| . = ALIGN(PAGE_SIZE); \ |
| .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \ |
| __per_cpu_load = .; \ |
| PERCPU_INPUT(cacheline) \ |
| } |
| |
| |
| /* |
| * Definition of the high level *_SECTION macros |
| * They will fit only a subset of the architectures |
| */ |
| |
| |
| /* |
| * Writeable data. |
| * All sections are combined in a single .data section. |
| * The sections following CONSTRUCTORS are arranged so their |
| * typical alignment matches. |
| * A cacheline is typical/always less than a PAGE_SIZE so |
| * the sections that has this restriction (or similar) |
| * is located before the ones requiring PAGE_SIZE alignment. |
| * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which |
| * matches the requirement of PAGE_ALIGNED_DATA. |
| * |
| * use 0 as page_align if page_aligned data is not used */ |
| #define RW_DATA_SECTION(cacheline, pagealigned, inittask) \ |
| . = ALIGN(PAGE_SIZE); \ |
| .data : AT(ADDR(.data) - LOAD_OFFSET) { \ |
| INIT_TASK_DATA(inittask) \ |
| NOSAVE_DATA \ |
| PAGE_ALIGNED_DATA(pagealigned) \ |
| CACHELINE_ALIGNED_DATA(cacheline) \ |
| READ_MOSTLY_DATA(cacheline) \ |
| DATA_DATA \ |
| CONSTRUCTORS \ |
| } \ |
| BUG_TABLE \ |
| |
| #define INIT_TEXT_SECTION(inittext_align) \ |
| . = ALIGN(inittext_align); \ |
| .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \ |
| _sinittext = .; \ |
| INIT_TEXT \ |
| _einittext = .; \ |
| } |
| |
| #define INIT_DATA_SECTION(initsetup_align) \ |
| .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \ |
| INIT_DATA \ |
| INIT_SETUP(initsetup_align) \ |
| INIT_CALLS \ |
| CON_INITCALL \ |
| SECURITY_INITCALL \ |
| INIT_RAM_FS \ |
| } |
| |
| #define BSS_SECTION(sbss_align, bss_align, stop_align) \ |
| . = ALIGN(sbss_align); \ |
| __bss_start = .; \ |
| SBSS(sbss_align) \ |
| BSS(bss_align) \ |
| . = ALIGN(stop_align); \ |
| __bss_stop = .; |