/*
 * Helper macros to support writing architecture specific
 * linker scripts.
 *
 * A minimal linker scripts has following content:
 * [This is a sample, architectures may have special requirements]
 *
 * 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(PAGE_SIZE)
 *      RW_DATA(...)
 *      _edata = .;
 *
 *      EXCEPTION_TABLE(...)
 *
 *      BSS_SECTION(0, 0, 0)
 *      _end = .;
 *
 *      STABS_DEBUG
 *      DWARF_DEBUG
 *      ELF_DETAILS
 *
 *      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
 */

#include <asm-generic/codetag.lds.h>

#ifndef LOAD_OFFSET
#define LOAD_OFFSET 0
#endif

/*
 * Only some architectures want to have the .notes segment visible in
 * a separate PT_NOTE ELF Program Header. When this happens, it needs
 * to be visible in both the kernel text's PT_LOAD and the PT_NOTE
 * Program Headers. In this case, though, the PT_LOAD needs to be made
 * the default again so that all the following sections don't also end
 * up in the PT_NOTE Program Header.
 */
#ifdef EMITS_PT_NOTE
#define NOTES_HEADERS           :text :note
#define NOTES_HEADERS_RESTORE   __restore_ph : { *(.__restore_ph) } :text
#else
#define NOTES_HEADERS
#define NOTES_HEADERS_RESTORE
#endif

/*
 * Some architectures have non-executable read-only exception tables.
 * They can be added to the RO_DATA segment by specifying their desired
 * alignment.
 */
#ifdef RO_EXCEPTION_TABLE_ALIGN
#define RO_EXCEPTION_TABLE      EXCEPTION_TABLE(RO_EXCEPTION_TABLE_ALIGN)
#else
#define RO_EXCEPTION_TABLE
#endif

/* Align . function alignment. */
#define ALIGN_FUNCTION()  . = ALIGN(CONFIG_FUNCTION_ALIGNMENT)

/*
 * Support -ffunction-sections by matching .text and .text.*,
 * but exclude '.text..*', .text.startup[.*], and .text.exit[.*].
 *
 * .text.startup and .text.startup.* are matched later by INIT_TEXT, and
 * .text.exit and .text.exit.* are matched later by EXIT_TEXT, so they must be
 * explicitly excluded here.
 *
 * Other .text.* sections that are typically grouped separately, such as
 * .text.unlikely or .text.hot, must be matched explicitly before using
 * TEXT_MAIN.
 *
 * NOTE: builds *with* and *without* -ffunction-sections are both supported by
 * this single macro.  Even with -ffunction-sections, there may be some objects
 * NOT compiled with the flag due to the use of a specific Makefile override
 * like cflags-y or AUTOFDO_PROFILE_foo.o.  So this single catchall rule is
 * needed to support mixed object builds.
 *
 * One implication is that functions named startup(), exit(), split(),
 * unlikely(), hot(), and unknown() are not allowed in the kernel due to the
 * ambiguity of their section names with -ffunction-sections.  For example,
 * .text.startup could be __attribute__((constructor)) code in a *non*
 * ffunction-sections object, which should be placed in .init.text; or it could
 * be an actual function named startup() in an ffunction-sections object, which
 * should be placed in .text.  The build will detect and complain about any such
 * ambiguously named functions.
 */
#define TEXT_MAIN                                                       \
        .text                                                           \
        .text.[_0-9A-Za-df-rt-z]*                                       \
        .text.s[_0-9A-Za-su-z]*         .text.s         .text.s.*       \
        .text.st[_0-9A-Zb-z]*           .text.st        .text.st.*      \
        .text.sta[_0-9A-Za-qs-z]*       .text.sta       .text.sta.*     \
        .text.star[_0-9A-Za-su-z]*      .text.star      .text.star.*    \
        .text.start[_0-9A-Za-tv-z]*     .text.start     .text.start.*   \
        .text.startu[_0-9A-Za-oq-z]*    .text.startu    .text.startu.*  \
        .text.startup[_0-9A-Za-z]*                                      \
        .text.e[_0-9A-Za-wy-z]*         .text.e         .text.e.*       \
        .text.ex[_0-9A-Za-hj-z]*        .text.ex        .text.ex.*      \
        .text.exi[_0-9A-Za-su-z]*       .text.exi       .text.exi.*     \
        .text.exit[_0-9A-Za-z]*

/*
 * Support -fdata-sections by matching .data, .data.*, and others,
 * but exclude '.data..*'.
 */
#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data.rel.* .data..L* .data..compoundliteral* .data.$__unnamed_* .data.$L*
#define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]*
#define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]* .rodata..L*
#define BSS_MAIN .bss .bss.[0-9a-zA-Z_]* .bss..L* .bss..compoundliteral*
#define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]*

/*
 * GCC 4.5 and later have a 32 bytes section alignment for structures.
 * Except GCC 4.9, that feels the need to align on 64 bytes.
 */
#define STRUCT_ALIGNMENT 32
#define STRUCT_ALIGN() . = ALIGN(STRUCT_ALIGNMENT)

/*
 * The order of the sched class addresses are important, as they are
 * used to determine the order of the priority of each sched class in
 * relation to each other.
 */
#define SCHED_DATA                              \
        STRUCT_ALIGN();                         \
        __sched_class_highest = .;              \
        *(__stop_sched_class)                   \
        *(__dl_sched_class)                     \
        *(__rt_sched_class)                     \
        *(__fair_sched_class)                   \
        *(__ext_sched_class)                    \
        *(__idle_sched_class)                   \
        __sched_class_lowest = .;

/* The actual configuration determine if the init/exit sections
 * are handled as text/data or they can be discarded (which
 * often happens at runtime)
 */

#ifndef CONFIG_HAVE_DYNAMIC_FTRACE_NO_PATCHABLE
#define KEEP_PATCHABLE          KEEP(*(__patchable_function_entries))
#define PATCHABLE_DISCARDS
#else
#define KEEP_PATCHABLE
#define PATCHABLE_DISCARDS      *(__patchable_function_entries)
#endif

#ifndef CONFIG_ARCH_SUPPORTS_CFI
/*
 * Simply points to ftrace_stub, but with the proper protocol.
 * Defined by the linker script in linux/vmlinux.lds.h
 */
#define FTRACE_STUB_HACK        ftrace_stub_graph = ftrace_stub;
#else
#define FTRACE_STUB_HACK
#endif

#ifdef CONFIG_DYNAMIC_FTRACE
/*
 * The ftrace call sites are logged to a section whose name depends on the
 * compiler option used. A given kernel image will only use one, AKA
 * FTRACE_CALLSITE_SECTION. We capture all of them here to avoid header
 * dependencies for FTRACE_CALLSITE_SECTION's definition.
 *
 * ftrace_ops_list_func will be defined as arch_ftrace_ops_list_func
 * as some archs will have a different prototype for that function
 * but ftrace_ops_list_func() will have a single prototype.
 */
#define MCOUNT_REC()    . = ALIGN(8);                           \
                        __start_mcount_loc = .;                 \
                        KEEP(*(__mcount_loc))                   \
                        KEEP_PATCHABLE                          \
                        __stop_mcount_loc = .;                  \
                        FTRACE_STUB_HACK                        \
                        ftrace_ops_list_func = arch_ftrace_ops_list_func;
#else
# ifdef CONFIG_FUNCTION_TRACER
#  define MCOUNT_REC()  FTRACE_STUB_HACK                        \
                        ftrace_ops_list_func = arch_ftrace_ops_list_func;
# else
#  define MCOUNT_REC()
# endif
#endif

#define BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)       \
        _BEGIN_##_label_ = .;                                           \
        KEEP(*(_sec_))                                                  \
        _END_##_label_ = .;

#define BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)      \
        _label_##_BEGIN_ = .;                                           \
        KEEP(*(_sec_))                                                  \
        _label_##_END_ = .;

#define BOUNDED_SECTION_BY(_sec_, _label_)                              \
        BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)

#define BOUNDED_SECTION(_sec)    BOUNDED_SECTION_BY(_sec, _sec)

#define HEADERED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
        _HDR_##_label_  = .;                                            \
        KEEP(*(.gnu.linkonce.##_sec_))                                  \
        BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)

#define HEADERED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
        _label_##_HDR_ = .;                                             \
        KEEP(*(.gnu.linkonce.##_sec_))                                  \
        BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)

#define HEADERED_SECTION_BY(_sec_, _label_)                             \
        HEADERED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)

#define HEADERED_SECTION(_sec)   HEADERED_SECTION_BY(_sec, _sec)

#ifdef CONFIG_TRACE_BRANCH_PROFILING
#define LIKELY_PROFILE()                                                \
        BOUNDED_SECTION_BY(_ftrace_annotated_branch, _annotated_branch_profile)
#else
#define LIKELY_PROFILE()
#endif

#ifdef CONFIG_PROFILE_ALL_BRANCHES
#define BRANCH_PROFILE()                                        \
        BOUNDED_SECTION_BY(_ftrace_branch, _branch_profile)
#else
#define BRANCH_PROFILE()
#endif

#ifdef CONFIG_KPROBES
#define KPROBE_BLACKLIST()                              \
        . = ALIGN(8);                                   \
        BOUNDED_SECTION(_kprobe_blacklist)
#else
#define KPROBE_BLACKLIST()
#endif

#ifdef CONFIG_FUNCTION_ERROR_INJECTION
#define ERROR_INJECT_WHITELIST()                        \
        STRUCT_ALIGN();                                 \
        BOUNDED_SECTION(_error_injection_whitelist)
#else
#define ERROR_INJECT_WHITELIST()
#endif

#ifdef CONFIG_EVENT_TRACING
#define FTRACE_EVENTS()                                                 \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION(_ftrace_events)                                 \
        BOUNDED_SECTION_BY(_ftrace_eval_map, _ftrace_eval_maps)
#else
#define FTRACE_EVENTS()
#endif

#ifdef CONFIG_TRACING
#define TRACE_PRINTKS()         BOUNDED_SECTION_BY(__trace_printk_fmt, ___trace_bprintk_fmt)
#define TRACEPOINT_STR()        BOUNDED_SECTION_BY(__tracepoint_str, ___tracepoint_str)
#else
#define TRACE_PRINTKS()
#define TRACEPOINT_STR()
#endif

#ifdef CONFIG_FTRACE_SYSCALLS
#define TRACE_SYSCALLS()                        \
        . = ALIGN(8);                           \
        BOUNDED_SECTION_BY(__syscalls_metadata, _syscalls_metadata)
#else
#define TRACE_SYSCALLS()
#endif

#ifdef CONFIG_BPF_EVENTS
#define BPF_RAW_TP() STRUCT_ALIGN();                            \
        BOUNDED_SECTION_BY(__bpf_raw_tp_map, __bpf_raw_tp)
#else
#define BPF_RAW_TP()
#endif

#ifdef CONFIG_SERIAL_EARLYCON
#define EARLYCON_TABLE()                                                \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION_POST_LABEL(__earlycon_table, __earlycon_table, , _end)
#else
#define EARLYCON_TABLE()
#endif

#ifdef CONFIG_SECURITY
#define LSM_TABLE()                                     \
        . = ALIGN(8);                                   \
        BOUNDED_SECTION_PRE_LABEL(.lsm_info.init, _lsm_info, __start, __end)

#define EARLY_LSM_TABLE()                                               \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION_PRE_LABEL(.early_lsm_info.init, _early_lsm_info, __start, __end)
#else
#define LSM_TABLE()
#define EARLY_LSM_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);                                                   \
        BOUNDED_SECTION_POST_LABEL(__##name##_acpi_probe_table,         \
                                   __##name##_acpi_probe_table,, _end)
#else
#define ACPI_PROBE_TABLE(name)
#endif

#ifdef CONFIG_THERMAL
#define THERMAL_TABLE(name)                                             \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION_POST_LABEL(__##name##_thermal_table,            \
                                   __##name##_thermal_table,, _end)
#else
#define THERMAL_TABLE(name)
#endif

#define KERNEL_DTB()                                                    \
        STRUCT_ALIGN();                                                 \
        __dtb_start = .;                                                \
        KEEP(*(.dtb.init.rodata))                                       \
        __dtb_end = .;

/*
 * .data section
 */
#define DATA_DATA                                                       \
        *(.xiptext)                                                     \
        *(DATA_MAIN)                                                    \
        *(.data..decrypted)                                             \
        *(.ref.data)                                                    \
        *(.data..shared_aligned) /* percpu related */                   \
        *(.data..unlikely)                                              \
        __start_once = .;                                               \
        *(.data..once)                                                  \
        __end_once = .;                                                 \
        *(.data..do_once)                                               \
        STRUCT_ALIGN();                                                 \
        *(__tracepoints)                                                \
        /* implement dynamic printk debug */                            \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION_BY(__dyndbg_classes, ___dyndbg_classes)         \
        BOUNDED_SECTION_BY(__dyndbg, ___dyndbg)                         \
        CODETAG_SECTIONS()                                              \
        LIKELY_PROFILE()                                                \
        BRANCH_PROFILE()                                                \
        TRACE_PRINTKS()                                                 \
        BPF_RAW_TP()                                                    \
        TRACEPOINT_STR()                                                \
        KUNIT_TABLE()

/*
 * Data section helpers
 */
#define NOSAVE_DATA                                                     \
        . = ALIGN(PAGE_SIZE);                                           \
        __nosave_begin = .;                                             \
        *(.data..nosave)                                                \
        . = ALIGN(PAGE_SIZE);                                           \
        __nosave_end = .;

#define CACHE_HOT_DATA(align)                                           \
        . = ALIGN(align);                                               \
        *(SORT_BY_ALIGNMENT(.data..hot.*))                              \
        . = ALIGN(align);

#define PAGE_ALIGNED_DATA(page_align)                                   \
        . = ALIGN(page_align);                                          \
        *(.data..page_aligned)                                          \
        . = ALIGN(page_align);

#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_stack = .;                                         \
        init_thread_union = .;                                          \
        init_stack = .;                                                 \
        KEEP(*(.data..init_thread_info))                                \
        . = __start_init_stack + THREAD_SIZE;                           \
        __end_init_stack = .;

#define JUMP_TABLE_DATA                                                 \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION_BY(__jump_table, ___jump_table)

#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
#define STATIC_CALL_DATA                                                \
        . = ALIGN(8);                                                   \
        BOUNDED_SECTION_BY(.static_call_sites, _static_call_sites)      \
        BOUNDED_SECTION_BY(.static_call_tramp_key, _static_call_tramp_key)
#else
#define STATIC_CALL_DATA
#endif

/*
 * 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                                              \
        . = ALIGN(8);                                                   \
        __start_ro_after_init = .;                                      \
        *(.data..ro_after_init)                                         \
        JUMP_TABLE_DATA                                                 \
        STATIC_CALL_DATA                                                \
        __end_ro_after_init = .;
#endif

/*
 * .kcfi_traps contains a list KCFI trap locations.
 */
#ifndef KCFI_TRAPS
#ifdef CONFIG_ARCH_USES_CFI_TRAPS
#define KCFI_TRAPS                                                      \
        __kcfi_traps : AT(ADDR(__kcfi_traps) - LOAD_OFFSET) {           \
                BOUNDED_SECTION_BY(.kcfi_traps, ___kcfi_traps)          \
        }
#else
#define KCFI_TRAPS
#endif
#endif

/*
 * Read only Data
 */
#define RO_DATA(align)                                                  \
        . = ALIGN((align));                                             \
        .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
                __start_rodata = .;                                     \
                *(.rodata) *(.rodata.*) *(.data.rel.ro*)                \
                SCHED_DATA                                              \
                RO_AFTER_INIT_DATA      /* Read only after init */      \
                . = ALIGN(8);                                           \
                BOUNDED_SECTION_BY(__tracepoints_ptrs, ___tracepoints_ptrs) \
                *(__tracepoints_strings)/* Tracepoints: strings */      \
        }                                                               \
                                                                        \
        .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
                *(.rodata1)                                             \
        }                                                               \
                                                                        \
        /* PCI quirks */                                                \
        .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_early,  _pci_fixups_early,  __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_header, _pci_fixups_header, __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_final,  _pci_fixups_final,  __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_enable, _pci_fixups_enable, __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume, _pci_fixups_resume, __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend, _pci_fixups_suspend, __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume_early, _pci_fixups_resume_early, __start, __end) \
                BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend_late, _pci_fixups_suspend_late, __start, __end) \
        }                                                               \
                                                                        \
        FW_LOADER_BUILT_IN_DATA                                         \
        TRACEDATA                                                       \
                                                                        \
        PRINTK_INDEX                                                    \
                                                                        \
        /* 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 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: strings */                              \
        __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
                *(__ksymtab_strings)                                    \
        }                                                               \
                                                                        \
        /* __*init sections */                                          \
        __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) {         \
                *(.ref.rodata)                                          \
        }                                                               \
                                                                        \
        /* Built-in module parameters. */                               \
        __param : AT(ADDR(__param) - LOAD_OFFSET) {                     \
                BOUNDED_SECTION_BY(__param, ___param)                   \
        }                                                               \
                                                                        \
        /* Built-in module versions. */                                 \
        __modver : AT(ADDR(__modver) - LOAD_OFFSET) {                   \
                BOUNDED_SECTION_BY(__modver, ___modver)                 \
        }                                                               \
                                                                        \
        KCFI_TRAPS                                                      \
                                                                        \
        RO_EXCEPTION_TABLE                                              \
        NOTES                                                           \
        BTF                                                             \
                                                                        \
        . = ALIGN((align));                                             \
        __end_rodata = .;


/*
 * Non-instrumentable text section
 */
#define NOINSTR_TEXT                                                    \
                ALIGN_FUNCTION();                                       \
                __noinstr_text_start = .;                               \
                *(.noinstr.text)                                        \
                __cpuidle_text_start = .;                               \
                *(.cpuidle.text)                                        \
                __cpuidle_text_end = .;                                 \
                __noinstr_text_end = .;

#define TEXT_SPLIT                                                      \
                __split_text_start = .;                                 \
                *(.text.split .text.split.[0-9a-zA-Z_]*)                \
                __split_text_end = .;

#define TEXT_UNLIKELY                                                   \
                __unlikely_text_start = .;                              \
                *(.text.unlikely .text.unlikely.*)                      \
                __unlikely_text_end = .;

#define TEXT_HOT                                                        \
                __hot_text_start = .;                                   \
                *(.text.hot .text.hot.*)                                \
                __hot_text_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 symbols with a fixed pattern (for example,
 * .text.hot or .text.unlikely).  Match those before TEXT_MAIN to ensure
 * they get grouped together.
 *
 * Also placing .text.hot section at the beginning of a page, this
 * would help the TLB performance.
 */
#define TEXT_TEXT                                                       \
                ALIGN_FUNCTION();                                       \
                *(.text.asan.* .text.tsan.*)                            \
                *(.text.unknown .text.unknown.*)                        \
                TEXT_SPLIT                                              \
                TEXT_UNLIKELY                                           \
                . = ALIGN(PAGE_SIZE);                                   \
                TEXT_HOT                                                \
                *(TEXT_MAIN .text.fixup)                                \
                NOINSTR_TEXT                                            \
                *(.ref.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 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 = .;

#define STATIC_CALL_TEXT                                                \
                ALIGN_FUNCTION();                                       \
                __static_call_text_start = .;                           \
                *(.static_call.text)                                    \
                __static_call_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) {               \
                BOUNDED_SECTION_BY(__ex_table, ___ex_table)             \
        }

/*
 * .BTF
 */
#ifdef CONFIG_DEBUG_INFO_BTF
#define BTF                                                             \
        . = ALIGN(PAGE_SIZE);                                           \
        .BTF : AT(ADDR(.BTF) - LOAD_OFFSET) {                           \
                BOUNDED_SECTION_BY(.BTF, _BTF)                          \
        }                                                               \
        . = ALIGN(PAGE_SIZE);                                           \
        .BTF_ids : AT(ADDR(.BTF_ids) - LOAD_OFFSET) {                   \
                *(.BTF_ids)                                             \
        }
#else
#define BTF
#endif

/*
 * 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(*(SORT(.ctors.*)))            \
                        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.*)                                      \
        KERNEL_CTORS()                                                  \
        MCOUNT_REC()                                                    \
        *(.init.rodata .init.rodata.*)                                  \
        FTRACE_EVENTS()                                                 \
        TRACE_SYSCALLS()                                                \
        KPROBE_BLACKLIST()                                              \
        ERROR_INJECT_WHITELIST()                                        \
        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)                                         \
        THERMAL_TABLE(governor)                                         \
        EARLYCON_TABLE()                                                \
        LSM_TABLE()                                                     \
        EARLY_LSM_TABLE()                                               \
        KUNIT_INIT_TABLE()

#define INIT_TEXT                                                       \
        *(.init.text .init.text.*)                                      \
        *(.text.startup .text.startup.*)

#define EXIT_DATA                                                       \
        *(.exit.data .exit.data.*)                                      \
        *(.fini_array .fini_array.*)                                    \
        *(.dtors .dtors.*)

#define EXIT_TEXT                                                       \
        *(.exit.text)                                                   \
        *(.text.exit .text.exit.*)

#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                                      \
                . = ALIGN(PAGE_SIZE);                                   \
                *(.bss..page_aligned)                                   \
                . = ALIGN(PAGE_SIZE);                                   \
                *(.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_addr     0 : { *(.debug_addr) }                  \
                .debug_line_str 0 : { *(.debug_line_str) }              \
                .debug_loclists 0 : { *(.debug_loclists) }              \
                .debug_macro    0 : { *(.debug_macro) }                 \
                .debug_names    0 : { *(.debug_names) }                 \
                .debug_rnglists 0 : { *(.debug_rnglists) }              \
                .debug_str_offsets      0 : { *(.debug_str_offsets) }

/* 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) }

/* Required sections not related to debugging. */
#define ELF_DETAILS                                                     \
                .comment 0 : { *(.comment) }                            \
                .symtab 0 : { *(.symtab) }                              \
                .strtab 0 : { *(.strtab) }                              \
                .shstrtab 0 : { *(.shstrtab) }

#define MODINFO                                                         \
                .modinfo : { *(.modinfo) . = ALIGN(8); }

#ifdef CONFIG_GENERIC_BUG
#define BUG_TABLE                                                       \
        . = ALIGN(8);                                                   \
        __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) {             \
                BOUNDED_SECTION_BY(__bug_table, ___bug_table)           \
        }
#else
#define BUG_TABLE
#endif

#ifdef CONFIG_UNWINDER_ORC
#define ORC_UNWIND_TABLE                                                \
        .orc_header : AT(ADDR(.orc_header) - LOAD_OFFSET) {             \
                BOUNDED_SECTION_BY(.orc_header, _orc_header)            \
        }                                                               \
        . = ALIGN(4);                                                   \
        .orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) {       \
                BOUNDED_SECTION_BY(.orc_unwind_ip, _orc_unwind_ip)      \
        }                                                               \
        . = ALIGN(2);                                                   \
        .orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) {             \
                BOUNDED_SECTION_BY(.orc_unwind, _orc_unwind)            \
        }                                                               \
        text_size = _etext - _stext;                                    \
        . = ALIGN(4);                                                   \
        .orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) {             \
                orc_lookup = .;                                         \
                . += (((text_size + LOOKUP_BLOCK_SIZE - 1) /            \
                        LOOKUP_BLOCK_SIZE) + 1) * 4;                    \
                orc_lookup_end = .;                                     \
        }
#else
#define ORC_UNWIND_TABLE
#endif

/* Built-in firmware blobs */
#ifdef CONFIG_FW_LOADER
#define FW_LOADER_BUILT_IN_DATA                                         \
        .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) {    \
                BOUNDED_SECTION_PRE_LABEL(.builtin_fw, _builtin_fw, __start, __end) \
        }
#else
#define FW_LOADER_BUILT_IN_DATA
#endif

#ifdef CONFIG_PM_TRACE
#define TRACEDATA                                                       \
        . = ALIGN(4);                                                   \
        .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
                BOUNDED_SECTION_POST_LABEL(.tracedata, __tracedata, _start, _end) \
        }
#else
#define TRACEDATA
#endif

#ifdef CONFIG_PRINTK_INDEX
#define PRINTK_INDEX                                                    \
        .printk_index : AT(ADDR(.printk_index) - LOAD_OFFSET) {         \
                BOUNDED_SECTION_BY(.printk_index, _printk_index)        \
        }
#else
#define PRINTK_INDEX
#endif

/*
 * Discard .note.GNU-stack, which is emitted as PROGBITS by the compiler.
 * Otherwise, the type of .notes section would become PROGBITS instead of NOTES.
 *
 * Also, discard .note.gnu.property, otherwise it forces the notes section to
 * be 8-byte aligned which causes alignment mismatches with the kernel's custom
 * 4-byte aligned notes.
 */
#define NOTES                                                           \
        /DISCARD/ : {                                                   \
                *(.note.GNU-stack)                                      \
                *(.note.gnu.property)                                   \
        }                                                               \
        .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
                BOUNDED_SECTION_BY(.note.*, _notes)                     \
        } NOTES_HEADERS                                                 \
        NOTES_HEADERS_RESTORE

#define INIT_SETUP(initsetup_align)                                     \
                . = ALIGN(initsetup_align);                             \
                BOUNDED_SECTION_POST_LABEL(.init.setup, __setup, _start, _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                                                    \
        BOUNDED_SECTION_POST_LABEL(.con_initcall.init, __con_initcall, _start, _end)

#define NAMED_SECTION(name) \
        . = ALIGN(8); \
        name : AT(ADDR(name) - LOAD_OFFSET) \
        { BOUNDED_SECTION_PRE_LABEL(name, name, __start_, __stop_) }

#define RUNTIME_CONST(t,x) NAMED_SECTION(runtime_##t##_##x)

#define RUNTIME_CONST_VARIABLES                                         \
                RUNTIME_CONST(shift, d_hash_shift)                      \
                RUNTIME_CONST(ptr, dentry_hashtable)                    \
                RUNTIME_CONST(ptr, __dentry_cache)                      \
                RUNTIME_CONST(ptr, __names_cache)

/* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */
#define KUNIT_TABLE()                                                   \
                . = ALIGN(8);                                           \
                BOUNDED_SECTION_POST_LABEL(.kunit_test_suites, __kunit_suites, _start, _end)

/* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */
#define KUNIT_INIT_TABLE()                                              \
                . = ALIGN(8);                                           \
                BOUNDED_SECTION_POST_LABEL(.kunit_init_test_suites, \
                                __kunit_init_suites, _start, _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.
 */
#ifdef RUNTIME_DISCARD_EXIT
#define EXIT_DISCARDS
#else
#define EXIT_DISCARDS                                                   \
        EXIT_TEXT                                                       \
        EXIT_DATA
#endif

/*
 * Clang's -fprofile-arcs, -fsanitize=kernel-address, and
 * -fsanitize=thread produce unwanted sections (.eh_frame
 * and .init_array.*), but CONFIG_CONSTRUCTORS wants to
 * keep any .init_array.* sections.
 * https://llvm.org/pr46478
 */
#ifdef CONFIG_UNWIND_TABLES
#define DISCARD_EH_FRAME
#else
#define DISCARD_EH_FRAME        *(.eh_frame)
#endif
#if defined(CONFIG_GCOV_KERNEL) || defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KCSAN)
# ifdef CONFIG_CONSTRUCTORS
#  define SANITIZER_DISCARDS                                            \
        DISCARD_EH_FRAME
# else
#  define SANITIZER_DISCARDS                                            \
        *(.init_array) *(.init_array.*)                                 \
        DISCARD_EH_FRAME
# endif
#else
# define SANITIZER_DISCARDS
#endif

#define COMMON_DISCARDS                                                 \
        SANITIZER_DISCARDS                                              \
        PATCHABLE_DISCARDS                                              \
        *(.discard)                                                     \
        *(.discard.*)                                                   \
        *(.export_symbol)                                               \
        *(.no_trim_symbol)                                              \
        /* ld.bfd warns about .gnu.version* even when not emitted */    \
        *(.gnu.version*)                                                \
        *(__tracepoint_check)                                           \

#define DISCARDS                                                        \
        /DISCARD/ : {                                                   \
        EXIT_DISCARDS                                                   \
        EXIT_CALL                                                       \
        COMMON_DISCARDS                                                 \
        }

/**
 * 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 = .;                                            \
        . = ALIGN(PAGE_SIZE);                                           \
        *(.data..percpu..page_aligned)                                  \
        . = ALIGN(cacheline);                                           \
        __per_cpu_hot_start = .;                                        \
        *(SORT_BY_ALIGNMENT(.data..percpu..hot.*))                      \
        __per_cpu_hot_end = .;                                          \
        . = ALIGN(cacheline);                                           \
        *(.data..percpu..read_mostly)                                   \
        . = ALIGN(cacheline);                                           \
        *(.data..percpu)                                                \
        *(.data..percpu..shared_aligned)                                \
        PERCPU_DECRYPTED_SECTION                                        \
        __per_cpu_end = .;

/**
 * PERCPU_SECTION - define output section for percpu area
 * @cacheline: cacheline size
 *
 * 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.
 */
#define PERCPU_SECTION(cacheline)                                       \
        . = ALIGN(PAGE_SIZE);                                           \
        .data..percpu   : AT(ADDR(.data..percpu) - LOAD_OFFSET) {       \
                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(cacheline, pagealigned, inittask)                       \
        . = ALIGN(PAGE_SIZE);                                           \
        .data : AT(ADDR(.data) - LOAD_OFFSET) {                         \
                INIT_TASK_DATA(inittask)                                \
                NOSAVE_DATA                                             \
                PAGE_ALIGNED_DATA(pagealigned)                          \
                CACHE_HOT_DATA(cacheline)                               \
                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                                            \
                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 = .;