/*
 * 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

#include <linux/export.h>

/* 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.
 */
#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
#define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
#define DATA_MAIN .data .data.[0-9a-zA-Z_]*
#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 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 IOMMU_OF_TABLES()       OF_TABLE(CONFIG_OF_IOMMU, iommu)
#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 = .;                                  \
                KEEP(*(SORT(___ksymtab+*)))                             \
                __stop___ksymtab = .;                                   \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-only symbols */                     \
        __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
                __start___ksymtab_gpl = .;                              \
                KEEP(*(SORT(___ksymtab_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..refcount)                                      \
                *(.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()                                               \
        IOMMU_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)                                                  \
        *(.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(6);                                                   \
        .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                                                       \
        *(.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 = .;