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-rw-r--r--include/asm-generic/vmlinux.lds.h1151
1 files changed, 1151 insertions, 0 deletions
diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
new file mode 100644
index 0000000000..67d8dd2f1b
--- /dev/null
+++ b/include/asm-generic/vmlinux.lds.h
@@ -0,0 +1,1151 @@
+/*
+ * 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(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
+ */
+
+#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)
+
+/*
+ * LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which
+ * generates .data.identifier sections, which need to be pulled in with
+ * .data. We don't want to pull in .data..other sections, which Linux
+ * has defined. Same for text and bss.
+ *
+ * With LTO_CLANG, the linker also splits sections by default, so we need
+ * these macros to combine the sections during the final link.
+ *
+ * RODATA_MAIN is not used because existing code already defines .rodata.x
+ * sections to be brought in with rodata.
+ */
+#if defined(CONFIG_LD_DEAD_CODE_DATA_ELIMINATION) || defined(CONFIG_LTO_CLANG)
+#define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
+#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .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..compoundliteral*
+#define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]*
+#else
+#define TEXT_MAIN .text
+#define DATA_MAIN .data
+#define SDATA_MAIN .sdata
+#define RODATA_MAIN .rodata
+#define BSS_MAIN .bss
+#define SBSS_MAIN .sbss
+#endif
+
+/*
+ * 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) \
+ *(__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)
+ */
+
+#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
+
+#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_CLANG
+/*
+ * 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_FTRACE_MCOUNT_RECORD
+/*
+ * 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 */ \
+ MEM_KEEP(init.data*) \
+ MEM_KEEP(exit.data*) \
+ *(.data.unlikely) \
+ __start_once = .; \
+ *(.data.once) \
+ __end_once = .; \
+ STRUCT_ALIGN(); \
+ *(__tracepoints) \
+ /* implement dynamic printk debug */ \
+ . = ALIGN(8); \
+ BOUNDED_SECTION_BY(__dyndbg_classes, ___dyndbg_classes) \
+ BOUNDED_SECTION_BY(__dyndbg, ___dyndbg) \
+ LIKELY_PROFILE() \
+ BRANCH_PROFILE() \
+ TRACE_PRINTKS() \
+ BPF_RAW_TP() \
+ TRACEPOINT_STR()
+
+/*
+ * Data section helpers
+ */
+#define NOSAVE_DATA \
+ . = ALIGN(PAGE_SIZE); \
+ __nosave_begin = .; \
+ *(.data..nosave) \
+ . = ALIGN(PAGE_SIZE); \
+ __nosave_end = .;
+
+#define PAGE_ALIGNED_DATA(page_align) \
+ . = ALIGN(page_align); \
+ *(.data..page_aligned) \
+ . = 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_task = .; \
+ init_thread_union = .; \
+ init_stack = .; \
+ KEEP(*(.data..init_task)) \
+ KEEP(*(.data..init_thread_info)) \
+ . = __start_init_task + THREAD_SIZE; \
+ __end_init_task = .;
+
+#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.*) \
+ 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) \
+ MEM_KEEP(init.rodata) \
+ MEM_KEEP(exit.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 = .;
+
+/*
+ * .text section. Map to function alignment to avoid address changes
+ * during second ld run in second ld pass when generating System.map
+ *
+ * TEXT_MAIN here will match .text.fixup and .text.unlikely if dead
+ * code elimination is enabled, so these sections should be converted
+ * to use ".." first.
+ */
+#define TEXT_TEXT \
+ ALIGN_FUNCTION(); \
+ *(.text.hot .text.hot.*) \
+ *(TEXT_MAIN .text.fixup) \
+ *(.text.unlikely .text.unlikely.*) \
+ *(.text.unknown .text.unknown.*) \
+ NOINSTR_TEXT \
+ *(.ref.text) \
+ *(.text.asan.* .text.tsan.*) \
+ MEM_KEEP(init.text*) \
+ MEM_KEEP(exit.text*) \
+
+
+/* sched.text is aling to function alignment to secure we have same
+ * address even at second ld pass when generating System.map */
+#define SCHED_TEXT \
+ ALIGN_FUNCTION(); \
+ __sched_text_start = .; \
+ *(.sched.text) \
+ __sched_text_end = .;
+
+/* spinlock.text is aling to function alignment to secure we have same
+ * address even at second ld pass when generating System.map */
+#define LOCK_TEXT \
+ ALIGN_FUNCTION(); \
+ __lock_text_start = .; \
+ *(.spinlock.text) \
+ __lock_text_end = .;
+
+#define 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 \
+ .BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { \
+ BOUNDED_SECTION_BY(.BTF, _BTF) \
+ } \
+ . = ALIGN(4); \
+ .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.*) \
+ MEM_DISCARD(init.data*) \
+ KERNEL_CTORS() \
+ MCOUNT_REC() \
+ *(.init.rodata .init.rodata.*) \
+ FTRACE_EVENTS() \
+ TRACE_SYSCALLS() \
+ KPROBE_BLACKLIST() \
+ ERROR_INJECT_WHITELIST() \
+ MEM_DISCARD(init.rodata) \
+ CLK_OF_TABLES() \
+ RESERVEDMEM_OF_TABLES() \
+ TIMER_OF_TABLES() \
+ CPU_METHOD_OF_TABLES() \
+ CPUIDLE_METHOD_OF_TABLES() \
+ KERNEL_DTB() \
+ IRQCHIP_OF_MATCH_TABLE() \
+ ACPI_PROBE_TABLE(irqchip) \
+ ACPI_PROBE_TABLE(timer) \
+ THERMAL_TABLE(governor) \
+ EARLYCON_TABLE() \
+ LSM_TABLE() \
+ EARLY_LSM_TABLE() \
+ KUNIT_TABLE()
+
+#define INIT_TEXT \
+ *(.init.text .init.text.*) \
+ *(.text.startup) \
+ MEM_DISCARD(init.text*)
+
+#define EXIT_DATA \
+ *(.exit.data .exit.data.*) \
+ *(.fini_array .fini_array.*) \
+ *(.dtors .dtors.*) \
+ MEM_DISCARD(exit.data*) \
+ MEM_DISCARD(exit.rodata*)
+
+#define EXIT_TEXT \
+ *(.exit.text) \
+ *(.text.exit) \
+ MEM_DISCARD(exit.text)
+
+#define EXIT_CALL \
+ *(.exitcall.exit)
+
+/*
+ * bss (Block Started by Symbol) - uninitialized data
+ * zeroed during startup
+ */
+#define SBSS(sbss_align) \
+ . = ALIGN(sbss_align); \
+ .sbss : AT(ADDR(.sbss) - LOAD_OFFSET) { \
+ *(.dynsbss) \
+ *(SBSS_MAIN) \
+ *(.scommon) \
+ }
+
+/*
+ * Allow archectures to redefine BSS_FIRST_SECTIONS to add extra
+ * sections to the front of bss.
+ */
+#ifndef BSS_FIRST_SECTIONS
+#define BSS_FIRST_SECTIONS
+#endif
+
+#define BSS(bss_align) \
+ . = ALIGN(bss_align); \
+ .bss : AT(ADDR(.bss) - LOAD_OFFSET) { \
+ BSS_FIRST_SECTIONS \
+ . = 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) }
+
+#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)
+
+/* 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)
+
+#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://bugs.llvm.org/show_bug.cgi?id=46478
+ */
+#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) \
+ *(.modinfo) \
+ /* ld.bfd warns about .gnu.version* even when not emitted */ \
+ *(.gnu.version*) \
+
+#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 = .; \
+ *(.data..percpu..first) \
+ . = ALIGN(PAGE_SIZE); \
+ *(.data..percpu..page_aligned) \
+ . = ALIGN(cacheline); \
+ *(.data..percpu..read_mostly) \
+ . = ALIGN(cacheline); \
+ *(.data..percpu) \
+ *(.data..percpu..shared_aligned) \
+ PERCPU_DECRYPTED_SECTION \
+ __per_cpu_end = .;
+
+/**
+ * PERCPU_VADDR - define output section for percpu area
+ * @cacheline: cacheline size
+ * @vaddr: explicit base address (optional)
+ * @phdr: destination PHDR (optional)
+ *
+ * Macro which expands to output section for percpu area.
+ *
+ * @cacheline is used to align subsections to avoid false cacheline
+ * sharing between subsections for different purposes.
+ *
+ * If @vaddr is not blank, it specifies explicit base address and all
+ * percpu symbols will be offset from the given address. If blank,
+ * @vaddr always equals @laddr + LOAD_OFFSET.
+ *
+ * @phdr defines the output PHDR to use if not blank. Be warned that
+ * output PHDR is sticky. If @phdr is specified, the next output
+ * section in the linker script will go there too. @phdr should have
+ * a leading colon.
+ *
+ * Note that this macros defines __per_cpu_load as an absolute symbol.
+ * If there is no need to put the percpu section at a predetermined
+ * address, use PERCPU_SECTION.
+ */
+#define PERCPU_VADDR(cacheline, vaddr, phdr) \
+ __per_cpu_load = .; \
+ .data..percpu vaddr : AT(__per_cpu_load - LOAD_OFFSET) { \
+ PERCPU_INPUT(cacheline) \
+ } phdr \
+ . = __per_cpu_load + SIZEOF(.data..percpu);
+
+/**
+ * PERCPU_SECTION - define output section for percpu area, simple version
+ * @cacheline: cacheline size
+ *
+ * Align to PAGE_SIZE and outputs output section for percpu area. This
+ * macro doesn't manipulate @vaddr or @phdr and __per_cpu_load and
+ * __per_cpu_start will be identical.
+ *
+ * This macro is equivalent to ALIGN(PAGE_SIZE); PERCPU_VADDR(@cacheline,,)
+ * except that __per_cpu_load is defined as a relative symbol against
+ * .data..percpu which is required for relocatable x86_32 configuration.
+ */
+#define PERCPU_SECTION(cacheline) \
+ . = ALIGN(PAGE_SIZE); \
+ .data..percpu : AT(ADDR(.data..percpu) - LOAD_OFFSET) { \
+ __per_cpu_load = .; \
+ PERCPU_INPUT(cacheline) \
+ }
+
+
+/*
+ * Definition of the high level *_SECTION macros
+ * They will fit only a subset of the architectures
+ */
+
+
+/*
+ * Writeable data.
+ * All sections are combined in a single .data section.
+ * The sections following CONSTRUCTORS are arranged so their
+ * typical alignment matches.
+ * A cacheline is typical/always less than a PAGE_SIZE so
+ * the sections that has this restriction (or similar)
+ * is located before the ones requiring PAGE_SIZE alignment.
+ * NOSAVE_DATA starts and ends with a PAGE_SIZE alignment which
+ * matches the requirement of PAGE_ALIGNED_DATA.
+ *
+ * use 0 as page_align if page_aligned data is not used */
+#define RW_DATA(cacheline, pagealigned, inittask) \
+ . = ALIGN(PAGE_SIZE); \
+ .data : AT(ADDR(.data) - LOAD_OFFSET) { \
+ INIT_TASK_DATA(inittask) \
+ NOSAVE_DATA \
+ PAGE_ALIGNED_DATA(pagealigned) \
+ CACHELINE_ALIGNED_DATA(cacheline) \
+ READ_MOSTLY_DATA(cacheline) \
+ DATA_DATA \
+ CONSTRUCTORS \
+ } \
+ BUG_TABLE \
+
+#define INIT_TEXT_SECTION(inittext_align) \
+ . = ALIGN(inittext_align); \
+ .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { \
+ _sinittext = .; \
+ INIT_TEXT \
+ _einittext = .; \
+ }
+
+#define INIT_DATA_SECTION(initsetup_align) \
+ .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { \
+ INIT_DATA \
+ INIT_SETUP(initsetup_align) \
+ INIT_CALLS \
+ CON_INITCALL \
+ 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 = .;