/*
 * 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)

/*
 * 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);                           \
                        VMLINUX_SYMBOL(__start_mcount_loc) = .; \
                        *(__mcount_loc)                         \
                        VMLINUX_SYMBOL(__stop_mcount_loc) = .;
#else
#define MCOUNT_REC()
#endif

#ifdef CONFIG_TRACE_BRANCH_PROFILING
#define LIKELY_PROFILE()        VMLINUX_SYMBOL(__start_annotated_branch_profile) = .; \
                                *(_ftrace_annotated_branch)                           \
                                VMLINUX_SYMBOL(__stop_annotated_branch_profile) = .;
#else
#define LIKELY_PROFILE()
#endif

#ifdef CONFIG_PROFILE_ALL_BRANCHES
#define BRANCH_PROFILE()        VMLINUX_SYMBOL(__start_branch_profile) = .;   \
                                *(_ftrace_branch)                             \
                                VMLINUX_SYMBOL(__stop_branch_profile) = .;
#else
#define BRANCH_PROFILE()
#endif

#ifdef CONFIG_KPROBES
#define KPROBE_BLACKLIST()      . = ALIGN(8);                                 \
                                VMLINUX_SYMBOL(__start_kprobe_blacklist) = .; \
                                *(_kprobe_blacklist)                          \
                                VMLINUX_SYMBOL(__stop_kprobe_blacklist) = .;
#else
#define KPROBE_BLACKLIST()
#endif

#ifdef CONFIG_EVENT_TRACING
#define FTRACE_EVENTS() . = ALIGN(8);                                   \
                        VMLINUX_SYMBOL(__start_ftrace_events) = .;      \
                        *(_ftrace_events)                               \
                        VMLINUX_SYMBOL(__stop_ftrace_events) = .;
#else
#define FTRACE_EVENTS()
#endif

#ifdef CONFIG_TRACING
#define TRACE_PRINTKS() VMLINUX_SYMBOL(__start___trace_bprintk_fmt) = .;      \
                         *(__trace_printk_fmt) /* Trace_printk fmt' pointer */ \
                         VMLINUX_SYMBOL(__stop___trace_bprintk_fmt) = .;
#define TRACEPOINT_STR() VMLINUX_SYMBOL(__start___tracepoint_str) = .;  \
                         *(__tracepoint_str) /* Trace_printk fmt' pointer */ \
                         VMLINUX_SYMBOL(__stop___tracepoint_str) = .;
#else
#define TRACE_PRINTKS()
#define TRACEPOINT_STR()
#endif

#ifdef CONFIG_FTRACE_SYSCALLS
#define TRACE_SYSCALLS() . = ALIGN(8);                                  \
                         VMLINUX_SYMBOL(__start_syscalls_metadata) = .; \
                         *(__syscalls_metadata)                         \
                         VMLINUX_SYMBOL(__stop_syscalls_metadata) = .;
#else
#define TRACE_SYSCALLS()
#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(config_enabled(cfg), name)
#define _OF_TABLE_0(name)
#define _OF_TABLE_1(name)                                               \
        . = ALIGN(8);                                                   \
        VMLINUX_SYMBOL(__##name##_of_table) = .;                        \
        *(__##name##_of_table)                                          \
        *(__##name##_of_table_end)

#define CLKSRC_OF_TABLES()      OF_TABLE(CONFIG_CLKSRC_OF, clksrc)
#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 EARLYCON_OF_TABLES()    OF_TABLE(CONFIG_SERIAL_EARLYCON, earlycon)

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

/* .data section */
#define DATA_DATA                                                       \
        *(.data)                                                        \
        *(.ref.data)                                                    \
        *(.data..shared_aligned) /* percpu related */                   \
        MEM_KEEP(init.data)                                             \
        MEM_KEEP(exit.data)                                             \
        *(.data.unlikely)                                               \
        STRUCT_ALIGN();                                                 \
        *(__tracepoints)                                                \
        /* implement dynamic printk debug */                            \
        . = ALIGN(8);                                                   \
        VMLINUX_SYMBOL(__start___jump_table) = .;                       \
        *(__jump_table)                                                 \
        VMLINUX_SYMBOL(__stop___jump_table) = .;                        \
        . = ALIGN(8);                                                   \
        VMLINUX_SYMBOL(__start___verbose) = .;                          \
        *(__verbose)                                                    \
        VMLINUX_SYMBOL(__stop___verbose) = .;                           \
        LIKELY_PROFILE()                                                \
        BRANCH_PROFILE()                                                \
        TRACE_PRINTKS()                                                 \
        TRACEPOINT_STR()

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

/*
 * Read only Data
 */
#define RO_DATA_SECTION(align)                                          \
        . = ALIGN((align));                                             \
        .rodata           : AT(ADDR(.rodata) - LOAD_OFFSET) {           \
                VMLINUX_SYMBOL(__start_rodata) = .;                     \
                *(.rodata) *(.rodata.*)                                 \
                *(__vermagic)           /* Kernel version magic */      \
                . = ALIGN(8);                                           \
                VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .;         \
                *(__tracepoints_ptrs)   /* Tracepoints: pointer array */\
                VMLINUX_SYMBOL(__stop___tracepoints_ptrs) = .;          \
                *(__tracepoints_strings)/* Tracepoints: strings */      \
        }                                                               \
                                                                        \
        .rodata1          : AT(ADDR(.rodata1) - LOAD_OFFSET) {          \
                *(.rodata1)                                             \
        }                                                               \
                                                                        \
        BUG_TABLE                                                       \
                                                                        \
        /* PCI quirks */                                                \
        .pci_fixup        : AT(ADDR(.pci_fixup) - LOAD_OFFSET) {        \
                VMLINUX_SYMBOL(__start_pci_fixups_early) = .;           \
                *(.pci_fixup_early)                                     \
                VMLINUX_SYMBOL(__end_pci_fixups_early) = .;             \
                VMLINUX_SYMBOL(__start_pci_fixups_header) = .;          \
                *(.pci_fixup_header)                                    \
                VMLINUX_SYMBOL(__end_pci_fixups_header) = .;            \
                VMLINUX_SYMBOL(__start_pci_fixups_final) = .;           \
                *(.pci_fixup_final)                                     \
                VMLINUX_SYMBOL(__end_pci_fixups_final) = .;             \
                VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;          \
                *(.pci_fixup_enable)                                    \
                VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;            \
                VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;          \
                *(.pci_fixup_resume)                                    \
                VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;            \
                VMLINUX_SYMBOL(__start_pci_fixups_resume_early) = .;    \
                *(.pci_fixup_resume_early)                              \
                VMLINUX_SYMBOL(__end_pci_fixups_resume_early) = .;      \
                VMLINUX_SYMBOL(__start_pci_fixups_suspend) = .;         \
                *(.pci_fixup_suspend)                                   \
                VMLINUX_SYMBOL(__end_pci_fixups_suspend) = .;           \
                VMLINUX_SYMBOL(__start_pci_fixups_suspend_late) = .;    \
                *(.pci_fixup_suspend_late)                              \
                VMLINUX_SYMBOL(__end_pci_fixups_suspend_late) = .;      \
        }                                                               \
                                                                        \
        /* Built-in firmware blobs */                                   \
        .builtin_fw        : AT(ADDR(.builtin_fw) - LOAD_OFFSET) {      \
                VMLINUX_SYMBOL(__start_builtin_fw) = .;                 \
                *(.builtin_fw)                                          \
                VMLINUX_SYMBOL(__end_builtin_fw) = .;                   \
        }                                                               \
                                                                        \
        TRACEDATA                                                       \
                                                                        \
        /* Kernel symbol table: Normal symbols */                       \
        __ksymtab         : AT(ADDR(__ksymtab) - LOAD_OFFSET) {         \
                VMLINUX_SYMBOL(__start___ksymtab) = .;                  \
                *(SORT(___ksymtab+*))                                   \
                VMLINUX_SYMBOL(__stop___ksymtab) = .;                   \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-only symbols */                     \
        __ksymtab_gpl     : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) {     \
                VMLINUX_SYMBOL(__start___ksymtab_gpl) = .;              \
                *(SORT(___ksymtab_gpl+*))                               \
                VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .;               \
        }                                                               \
                                                                        \
        /* Kernel symbol table: Normal unused symbols */                \
        __ksymtab_unused  : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) {  \
                VMLINUX_SYMBOL(__start___ksymtab_unused) = .;           \
                *(SORT(___ksymtab_unused+*))                            \
                VMLINUX_SYMBOL(__stop___ksymtab_unused) = .;            \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-only unused symbols */              \
        __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
                VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .;       \
                *(SORT(___ksymtab_unused_gpl+*))                        \
                VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .;        \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-future-only symbols */              \
        __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
                VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .;       \
                *(SORT(___ksymtab_gpl_future+*))                        \
                VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .;        \
        }                                                               \
                                                                        \
        /* Kernel symbol table: Normal symbols */                       \
        __kcrctab         : AT(ADDR(__kcrctab) - LOAD_OFFSET) {         \
                VMLINUX_SYMBOL(__start___kcrctab) = .;                  \
                *(SORT(___kcrctab+*))                                   \
                VMLINUX_SYMBOL(__stop___kcrctab) = .;                   \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-only symbols */                     \
        __kcrctab_gpl     : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) {     \
                VMLINUX_SYMBOL(__start___kcrctab_gpl) = .;              \
                *(SORT(___kcrctab_gpl+*))                               \
                VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .;               \
        }                                                               \
                                                                        \
        /* Kernel symbol table: Normal unused symbols */                \
        __kcrctab_unused  : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) {  \
                VMLINUX_SYMBOL(__start___kcrctab_unused) = .;           \
                *(SORT(___kcrctab_unused+*))                            \
                VMLINUX_SYMBOL(__stop___kcrctab_unused) = .;            \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-only unused symbols */              \
        __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
                VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .;       \
                *(SORT(___kcrctab_unused_gpl+*))                        \
                VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .;        \
        }                                                               \
                                                                        \
        /* Kernel symbol table: GPL-future-only symbols */              \
        __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
                VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .;       \
                *(SORT(___kcrctab_gpl_future+*))                        \
                VMLINUX_SYMBOL(__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) {                     \
                VMLINUX_SYMBOL(__start___param) = .;                    \
                *(__param)                                              \
                VMLINUX_SYMBOL(__stop___param) = .;                     \
        }                                                               \
                                                                        \
        /* Built-in module versions. */                                 \
        __modver : AT(ADDR(__modver) - LOAD_OFFSET) {                   \
                VMLINUX_SYMBOL(__start___modver) = .;                   \
                *(__modver)                                             \
                VMLINUX_SYMBOL(__stop___modver) = .;                    \
                . = ALIGN((align));                                     \
                VMLINUX_SYMBOL(__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) { \
                VMLINUX_SYMBOL(__security_initcall_start) = .;          \
                *(.security_initcall.init)                              \
                VMLINUX_SYMBOL(__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 */
#define TEXT_TEXT                                                       \
                ALIGN_FUNCTION();                                       \
                *(.text.hot)                                            \
                *(.text)                                                \
                *(.ref.text)                                            \
        MEM_KEEP(init.text)                                             \
        MEM_KEEP(exit.text)                                             \
                *(.text.unlikely)


/* 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();                                       \
                VMLINUX_SYMBOL(__sched_text_start) = .;                 \
                *(.sched.text)                                          \
                VMLINUX_SYMBOL(__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();                                       \
                VMLINUX_SYMBOL(__lock_text_start) = .;                  \
                *(.spinlock.text)                                       \
                VMLINUX_SYMBOL(__lock_text_end) = .;

#define KPROBES_TEXT                                                    \
                ALIGN_FUNCTION();                                       \
                VMLINUX_SYMBOL(__kprobes_text_start) = .;               \
                *(.kprobes.text)                                        \
                VMLINUX_SYMBOL(__kprobes_text_end) = .;

#define ENTRY_TEXT                                                      \
                ALIGN_FUNCTION();                                       \
                VMLINUX_SYMBOL(__entry_text_start) = .;                 \
                *(.entry.text)                                          \
                VMLINUX_SYMBOL(__entry_text_end) = .;

#ifdef CONFIG_FUNCTION_GRAPH_TRACER
#define IRQENTRY_TEXT                                                   \
                ALIGN_FUNCTION();                                       \
                VMLINUX_SYMBOL(__irqentry_text_start) = .;              \
                *(.irqentry.text)                                       \
                VMLINUX_SYMBOL(__irqentry_text_end) = .;
#else
#define IRQENTRY_TEXT
#endif

/* Section used for early init (in .S files) */
#define HEAD_TEXT  *(.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) {               \
                VMLINUX_SYMBOL(__start___ex_table) = .;                 \
                *(__ex_table)                                           \
                VMLINUX_SYMBOL(__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);                      \
                        VMLINUX_SYMBOL(__ctors_start) = .; \
                        *(.ctors)                          \
                        *(.init_array)                     \
                        VMLINUX_SYMBOL(__ctors_end) = .;
#else
#define KERNEL_CTORS()
#endif

/* init and exit section handling */
#define INIT_DATA                                                       \
        *(.init.data)                                                   \
        MEM_DISCARD(init.data)                                          \
        KERNEL_CTORS()                                                  \
        MCOUNT_REC()                                                    \
        *(.init.rodata)                                                 \
        FTRACE_EVENTS()                                                 \
        TRACE_SYSCALLS()                                                \
        KPROBE_BLACKLIST()                                              \
        MEM_DISCARD(init.rodata)                                        \
        CLK_OF_TABLES()                                                 \
        RESERVEDMEM_OF_TABLES()                                         \
        CLKSRC_OF_TABLES()                                              \
        IOMMU_OF_TABLES()                                               \
        CPU_METHOD_OF_TABLES()                                          \
        KERNEL_DTB()                                                    \
        IRQCHIP_OF_MATCH_TABLE()                                        \
        EARLYCON_OF_TABLES()

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

#define EXIT_DATA                                                       \
        *(.exit.data)                                                   \
        MEM_DISCARD(exit.data)                                          \
        MEM_DISCARD(exit.rodata)

#define EXIT_TEXT                                                       \
        *(.exit.text)                                                   \
        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) {                         \
                *(.sbss)                                                \
                *(.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)                                                 \
                *(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) }               \
                /* 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) }             \

                /* 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) {             \
                VMLINUX_SYMBOL(__start___bug_table) = .;                \
                *(__bug_table)                                          \
                VMLINUX_SYMBOL(__stop___bug_table) = .;                 \
        }
#else
#define BUG_TABLE
#endif

#ifdef CONFIG_PM_TRACE
#define TRACEDATA                                                       \
        . = ALIGN(4);                                                   \
        .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {               \
                VMLINUX_SYMBOL(__tracedata_start) = .;                  \
                *(.tracedata)                                           \
                VMLINUX_SYMBOL(__tracedata_end) = .;                    \
        }
#else
#define TRACEDATA
#endif

#define NOTES                                                           \
        .notes : AT(ADDR(.notes) - LOAD_OFFSET) {                       \
                VMLINUX_SYMBOL(__start_notes) = .;                      \
                *(.note.*)                                              \
                VMLINUX_SYMBOL(__stop_notes) = .;                       \
        }

#define INIT_SETUP(initsetup_align)                                     \
                . = ALIGN(initsetup_align);                             \
                VMLINUX_SYMBOL(__setup_start) = .;                      \
                *(.init.setup)                                          \
                VMLINUX_SYMBOL(__setup_end) = .;

#define INIT_CALLS_LEVEL(level)                                         \
                VMLINUX_SYMBOL(__initcall##level##_start) = .;          \
                *(.initcall##level##.init)                              \
                *(.initcall##level##s.init)                             \

#define INIT_CALLS                                                      \
                VMLINUX_SYMBOL(__initcall_start) = .;                   \
                *(.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)                                     \
                VMLINUX_SYMBOL(__initcall_end) = .;

#define CON_INITCALL                                                    \
                VMLINUX_SYMBOL(__con_initcall_start) = .;               \
                *(.con_initcall.init)                                   \
                VMLINUX_SYMBOL(__con_initcall_end) = .;

#define SECURITY_INITCALL                                               \
                VMLINUX_SYMBOL(__security_initcall_start) = .;          \
                *(.security_initcall.init)                              \
                VMLINUX_SYMBOL(__security_initcall_end) = .;

#ifdef CONFIG_BLK_DEV_INITRD
#define INIT_RAM_FS                                                     \
        . = ALIGN(4);                                                   \
        VMLINUX_SYMBOL(__initramfs_start) = .;                          \
        *(.init.ramfs)                                                  \
        . = ALIGN(8);                                                   \
        *(.init.ramfs.info)
#else
#define INIT_RAM_FS
#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)                                         \
        VMLINUX_SYMBOL(__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)                                \
        VMLINUX_SYMBOL(__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)                            \
        VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
        .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)         \
                                - LOAD_OFFSET) {                        \
                PERCPU_INPUT(cacheline)                                 \
        } phdr                                                          \
        . = VMLINUX_SYMBOL(__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) {       \
                VMLINUX_SYMBOL(__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                                            \
        }

#define INIT_TEXT_SECTION(inittext_align)                               \
        . = ALIGN(inittext_align);                                      \
        .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {               \
                VMLINUX_SYMBOL(_sinittext) = .;                         \
                INIT_TEXT                                               \
                VMLINUX_SYMBOL(_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);                                          \
        VMLINUX_SYMBOL(__bss_start) = .;                                \
        SBSS(sbss_align)                                                \
        BSS(bss_align)                                                  \
        . = ALIGN(stop_align);                                          \
        VMLINUX_SYMBOL(__bss_stop) = .;