1153 lines
32 KiB
C
1153 lines
32 KiB
C
/*
|
|
* 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 . to a 8 byte boundary equals to maximum function alignment. */
|
|
#define ALIGN_FUNCTION() . = ALIGN(8)
|
|
|
|
/*
|
|
* LD_DEAD_CODE_DATA_ELIMINATION option enables -fdata-sections, which
|
|
* generates .data.identifier sections, which need to be pulled in with
|
|
* .data. We don't want to pull in .data..other sections, which Linux
|
|
* has defined. Same for text and bss.
|
|
*
|
|
* RODATA_MAIN is not used because existing code already defines .rodata.x
|
|
* sections to be brought in with rodata.
|
|
*/
|
|
#ifdef CONFIG_LD_DEAD_CODE_DATA_ELIMINATION
|
|
#define TEXT_MAIN .text .text.[0-9a-zA-Z_]*
|
|
#define DATA_MAIN .data .data.[0-9a-zA-Z_]* .data..LPBX*
|
|
#define SDATA_MAIN .sdata .sdata.[0-9a-zA-Z_]*
|
|
#define RODATA_MAIN .rodata .rodata.[0-9a-zA-Z_]*
|
|
#define BSS_MAIN .bss .bss.[0-9a-zA-Z_]*
|
|
#define SBSS_MAIN .sbss .sbss.[0-9a-zA-Z_]*
|
|
#else
|
|
#define TEXT_MAIN .text
|
|
#define 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.
|
|
*/
|
|
#if __GNUC__ == 4 && __GNUC_MINOR__ == 9
|
|
#define STRUCT_ALIGNMENT 64
|
|
#else
|
|
#define STRUCT_ALIGNMENT 32
|
|
#endif
|
|
#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(); \
|
|
__begin_sched_classes = .; \
|
|
*(__idle_sched_class) \
|
|
*(__fair_sched_class) \
|
|
*(__rt_sched_class) \
|
|
*(__dl_sched_class) \
|
|
*(__stop_sched_class) \
|
|
__end_sched_classes = .;
|
|
|
|
/* 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
|
|
/*
|
|
* 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.
|
|
*
|
|
* Need to also make ftrace_stub_graph point to ftrace_stub
|
|
* so that the same stub location may have different protocols
|
|
* and not mess up with C verifiers.
|
|
*/
|
|
#define MCOUNT_REC() . = ALIGN(8); \
|
|
__start_mcount_loc = .; \
|
|
KEEP(*(__mcount_loc)) \
|
|
KEEP(*(__patchable_function_entries)) \
|
|
__stop_mcount_loc = .; \
|
|
ftrace_stub_graph = ftrace_stub;
|
|
#else
|
|
# ifdef CONFIG_FUNCTION_TRACER
|
|
# define MCOUNT_REC() ftrace_stub_graph = ftrace_stub;
|
|
# else
|
|
# define MCOUNT_REC()
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef CONFIG_TRACE_BRANCH_PROFILING
|
|
#define LIKELY_PROFILE() __start_annotated_branch_profile = .; \
|
|
KEEP(*(_ftrace_annotated_branch)) \
|
|
__stop_annotated_branch_profile = .;
|
|
#else
|
|
#define LIKELY_PROFILE()
|
|
#endif
|
|
|
|
#ifdef CONFIG_PROFILE_ALL_BRANCHES
|
|
#define BRANCH_PROFILE() __start_branch_profile = .; \
|
|
KEEP(*(_ftrace_branch)) \
|
|
__stop_branch_profile = .;
|
|
#else
|
|
#define BRANCH_PROFILE()
|
|
#endif
|
|
|
|
#ifdef CONFIG_KPROBES
|
|
#define KPROBE_BLACKLIST() . = ALIGN(8); \
|
|
__start_kprobe_blacklist = .; \
|
|
KEEP(*(_kprobe_blacklist)) \
|
|
__stop_kprobe_blacklist = .;
|
|
#else
|
|
#define KPROBE_BLACKLIST()
|
|
#endif
|
|
|
|
#ifdef CONFIG_FUNCTION_ERROR_INJECTION
|
|
#define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \
|
|
__start_error_injection_whitelist = .; \
|
|
KEEP(*(_error_injection_whitelist)) \
|
|
__stop_error_injection_whitelist = .;
|
|
#else
|
|
#define ERROR_INJECT_WHITELIST()
|
|
#endif
|
|
|
|
#ifdef CONFIG_EVENT_TRACING
|
|
#define FTRACE_EVENTS() . = ALIGN(8); \
|
|
__start_ftrace_events = .; \
|
|
KEEP(*(_ftrace_events)) \
|
|
__stop_ftrace_events = .; \
|
|
__start_ftrace_eval_maps = .; \
|
|
KEEP(*(_ftrace_eval_map)) \
|
|
__stop_ftrace_eval_maps = .;
|
|
#else
|
|
#define FTRACE_EVENTS()
|
|
#endif
|
|
|
|
#ifdef CONFIG_TRACING
|
|
#define TRACE_PRINTKS() __start___trace_bprintk_fmt = .; \
|
|
KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \
|
|
__stop___trace_bprintk_fmt = .;
|
|
#define TRACEPOINT_STR() __start___tracepoint_str = .; \
|
|
KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \
|
|
__stop___tracepoint_str = .;
|
|
#else
|
|
#define TRACE_PRINTKS()
|
|
#define TRACEPOINT_STR()
|
|
#endif
|
|
|
|
#ifdef CONFIG_FTRACE_SYSCALLS
|
|
#define TRACE_SYSCALLS() . = ALIGN(8); \
|
|
__start_syscalls_metadata = .; \
|
|
KEEP(*(__syscalls_metadata)) \
|
|
__stop_syscalls_metadata = .;
|
|
#else
|
|
#define TRACE_SYSCALLS()
|
|
#endif
|
|
|
|
#ifdef CONFIG_BPF_EVENTS
|
|
#define BPF_RAW_TP() STRUCT_ALIGN(); \
|
|
__start__bpf_raw_tp = .; \
|
|
KEEP(*(__bpf_raw_tp_map)) \
|
|
__stop__bpf_raw_tp = .;
|
|
#else
|
|
#define BPF_RAW_TP()
|
|
#endif
|
|
|
|
#ifdef CONFIG_SERIAL_EARLYCON
|
|
#define EARLYCON_TABLE() . = ALIGN(8); \
|
|
__earlycon_table = .; \
|
|
KEEP(*(__earlycon_table)) \
|
|
__earlycon_table_end = .;
|
|
#else
|
|
#define EARLYCON_TABLE()
|
|
#endif
|
|
|
|
#ifdef CONFIG_SECURITY
|
|
#define LSM_TABLE() . = ALIGN(8); \
|
|
__start_lsm_info = .; \
|
|
KEEP(*(.lsm_info.init)) \
|
|
__end_lsm_info = .;
|
|
#define EARLY_LSM_TABLE() . = ALIGN(8); \
|
|
__start_early_lsm_info = .; \
|
|
KEEP(*(.early_lsm_info.init)) \
|
|
__end_early_lsm_info = .;
|
|
#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); \
|
|
__##name##_acpi_probe_table = .; \
|
|
KEEP(*(__##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); \
|
|
__##name##_thermal_table = .; \
|
|
KEEP(*(__##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) \
|
|
*(.ref.data) \
|
|
*(.data..shared_aligned) /* percpu related */ \
|
|
MEM_KEEP(init.data*) \
|
|
MEM_KEEP(exit.data*) \
|
|
*(.data.unlikely) \
|
|
__start_once = .; \
|
|
*(.data.once) \
|
|
__end_once = .; \
|
|
STRUCT_ALIGN(); \
|
|
*(__tracepoints) \
|
|
/* implement dynamic printk debug */ \
|
|
. = ALIGN(8); \
|
|
__start___dyndbg = .; \
|
|
KEEP(*(__dyndbg)) \
|
|
__stop___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); \
|
|
__start___jump_table = .; \
|
|
KEEP(*(__jump_table)) \
|
|
__stop___jump_table = .;
|
|
|
|
#define STATIC_CALL_DATA \
|
|
. = ALIGN(8); \
|
|
__start_static_call_sites = .; \
|
|
KEEP(*(.static_call_sites)) \
|
|
__stop_static_call_sites = .;
|
|
|
|
/*
|
|
* 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
|
|
|
|
/*
|
|
* 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); \
|
|
__start___tracepoints_ptrs = .; \
|
|
KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \
|
|
__stop___tracepoints_ptrs = .; \
|
|
*(__tracepoints_strings)/* Tracepoints: strings */ \
|
|
} \
|
|
\
|
|
.rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
|
|
*(.rodata1) \
|
|
} \
|
|
\
|
|
/* PCI quirks */ \
|
|
.pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
|
|
__start_pci_fixups_early = .; \
|
|
KEEP(*(.pci_fixup_early)) \
|
|
__end_pci_fixups_early = .; \
|
|
__start_pci_fixups_header = .; \
|
|
KEEP(*(.pci_fixup_header)) \
|
|
__end_pci_fixups_header = .; \
|
|
__start_pci_fixups_final = .; \
|
|
KEEP(*(.pci_fixup_final)) \
|
|
__end_pci_fixups_final = .; \
|
|
__start_pci_fixups_enable = .; \
|
|
KEEP(*(.pci_fixup_enable)) \
|
|
__end_pci_fixups_enable = .; \
|
|
__start_pci_fixups_resume = .; \
|
|
KEEP(*(.pci_fixup_resume)) \
|
|
__end_pci_fixups_resume = .; \
|
|
__start_pci_fixups_resume_early = .; \
|
|
KEEP(*(.pci_fixup_resume_early)) \
|
|
__end_pci_fixups_resume_early = .; \
|
|
__start_pci_fixups_suspend = .; \
|
|
KEEP(*(.pci_fixup_suspend)) \
|
|
__end_pci_fixups_suspend = .; \
|
|
__start_pci_fixups_suspend_late = .; \
|
|
KEEP(*(.pci_fixup_suspend_late)) \
|
|
__end_pci_fixups_suspend_late = .; \
|
|
} \
|
|
\
|
|
/* Built-in firmware blobs */ \
|
|
.builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) { \
|
|
__start_builtin_fw = .; \
|
|
KEEP(*(.builtin_fw)) \
|
|
__end_builtin_fw = .; \
|
|
} \
|
|
\
|
|
TRACEDATA \
|
|
\
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
|
|
__start___ksymtab = .; \
|
|
KEEP(*(SORT(___ksymtab+*))) \
|
|
__stop___ksymtab = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only symbols */ \
|
|
__ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
|
|
__start___ksymtab_gpl = .; \
|
|
KEEP(*(SORT(___ksymtab_gpl+*))) \
|
|
__stop___ksymtab_gpl = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal unused symbols */ \
|
|
__ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
|
|
__start___ksymtab_unused = .; \
|
|
KEEP(*(SORT(___ksymtab_unused+*))) \
|
|
__stop___ksymtab_unused = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only unused symbols */ \
|
|
__ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
|
|
__start___ksymtab_unused_gpl = .; \
|
|
KEEP(*(SORT(___ksymtab_unused_gpl+*))) \
|
|
__stop___ksymtab_unused_gpl = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-future-only symbols */ \
|
|
__ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
|
|
__start___ksymtab_gpl_future = .; \
|
|
KEEP(*(SORT(___ksymtab_gpl_future+*))) \
|
|
__stop___ksymtab_gpl_future = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal symbols */ \
|
|
__kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
|
|
__start___kcrctab = .; \
|
|
KEEP(*(SORT(___kcrctab+*))) \
|
|
__stop___kcrctab = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only symbols */ \
|
|
__kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
|
|
__start___kcrctab_gpl = .; \
|
|
KEEP(*(SORT(___kcrctab_gpl+*))) \
|
|
__stop___kcrctab_gpl = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: Normal unused symbols */ \
|
|
__kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
|
|
__start___kcrctab_unused = .; \
|
|
KEEP(*(SORT(___kcrctab_unused+*))) \
|
|
__stop___kcrctab_unused = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-only unused symbols */ \
|
|
__kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
|
|
__start___kcrctab_unused_gpl = .; \
|
|
KEEP(*(SORT(___kcrctab_unused_gpl+*))) \
|
|
__stop___kcrctab_unused_gpl = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: GPL-future-only symbols */ \
|
|
__kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
|
|
__start___kcrctab_gpl_future = .; \
|
|
KEEP(*(SORT(___kcrctab_gpl_future+*))) \
|
|
__stop___kcrctab_gpl_future = .; \
|
|
} \
|
|
\
|
|
/* Kernel symbol table: strings */ \
|
|
__ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
|
|
*(__ksymtab_strings) \
|
|
} \
|
|
\
|
|
/* __*init sections */ \
|
|
__init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
|
|
*(.ref.rodata) \
|
|
MEM_KEEP(init.rodata) \
|
|
MEM_KEEP(exit.rodata) \
|
|
} \
|
|
\
|
|
/* Built-in module parameters. */ \
|
|
__param : AT(ADDR(__param) - LOAD_OFFSET) { \
|
|
__start___param = .; \
|
|
KEEP(*(__param)) \
|
|
__stop___param = .; \
|
|
} \
|
|
\
|
|
/* Built-in module versions. */ \
|
|
__modver : AT(ADDR(__modver) - LOAD_OFFSET) { \
|
|
__start___modver = .; \
|
|
KEEP(*(__modver)) \
|
|
__stop___modver = .; \
|
|
} \
|
|
\
|
|
RO_EXCEPTION_TABLE \
|
|
NOTES \
|
|
BTF \
|
|
\
|
|
. = ALIGN((align)); \
|
|
__end_rodata = .;
|
|
|
|
/*
|
|
* Non-instrumentable text section
|
|
*/
|
|
#define NOINSTR_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__noinstr_text_start = .; \
|
|
*(.noinstr.text) \
|
|
__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 \
|
|
*(.text..refcount) \
|
|
*(.ref.text) \
|
|
MEM_KEEP(init.text*) \
|
|
MEM_KEEP(exit.text*) \
|
|
|
|
|
|
/* sched.text is aling to function alignment to secure we have same
|
|
* address even at second ld pass when generating System.map */
|
|
#define SCHED_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__sched_text_start = .; \
|
|
*(.sched.text) \
|
|
__sched_text_end = .;
|
|
|
|
/* spinlock.text is aling to function alignment to secure we have same
|
|
* address even at second ld pass when generating System.map */
|
|
#define LOCK_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__lock_text_start = .; \
|
|
*(.spinlock.text) \
|
|
__lock_text_end = .;
|
|
|
|
#define CPUIDLE_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__cpuidle_text_start = .; \
|
|
*(.cpuidle.text) \
|
|
__cpuidle_text_end = .;
|
|
|
|
#define KPROBES_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__kprobes_text_start = .; \
|
|
*(.kprobes.text) \
|
|
__kprobes_text_end = .;
|
|
|
|
#define ENTRY_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__entry_text_start = .; \
|
|
*(.entry.text) \
|
|
__entry_text_end = .;
|
|
|
|
#define IRQENTRY_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__irqentry_text_start = .; \
|
|
*(.irqentry.text) \
|
|
__irqentry_text_end = .;
|
|
|
|
#define SOFTIRQENTRY_TEXT \
|
|
ALIGN_FUNCTION(); \
|
|
__softirqentry_text_start = .; \
|
|
*(.softirqentry.text) \
|
|
__softirqentry_text_end = .;
|
|
|
|
#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) { \
|
|
__start___ex_table = .; \
|
|
KEEP(*(__ex_table)) \
|
|
__stop___ex_table = .; \
|
|
}
|
|
|
|
/*
|
|
* .BTF
|
|
*/
|
|
#ifdef CONFIG_DEBUG_INFO_BTF
|
|
#define BTF \
|
|
.BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { \
|
|
__start_BTF = .; \
|
|
KEEP(*(.BTF)) \
|
|
__stop_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_macro 0 : { *(.debug_macro) } \
|
|
.debug_addr 0 : { *(.debug_addr) }
|
|
|
|
/* Stabs debugging sections. */
|
|
#define STABS_DEBUG \
|
|
.stab 0 : { *(.stab) } \
|
|
.stabstr 0 : { *(.stabstr) } \
|
|
.stab.excl 0 : { *(.stab.excl) } \
|
|
.stab.exclstr 0 : { *(.stab.exclstr) } \
|
|
.stab.index 0 : { *(.stab.index) } \
|
|
.stab.indexstr 0 : { *(.stab.indexstr) }
|
|
|
|
/* 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) { \
|
|
__start___bug_table = .; \
|
|
KEEP(*(__bug_table)) \
|
|
__stop___bug_table = .; \
|
|
}
|
|
#else
|
|
#define BUG_TABLE
|
|
#endif
|
|
|
|
#ifdef CONFIG_UNWINDER_ORC
|
|
#define ORC_UNWIND_TABLE \
|
|
. = ALIGN(4); \
|
|
.orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \
|
|
__start_orc_unwind_ip = .; \
|
|
KEEP(*(.orc_unwind_ip)) \
|
|
__stop_orc_unwind_ip = .; \
|
|
} \
|
|
. = ALIGN(2); \
|
|
.orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \
|
|
__start_orc_unwind = .; \
|
|
KEEP(*(.orc_unwind)) \
|
|
__stop_orc_unwind = .; \
|
|
} \
|
|
. = ALIGN(4); \
|
|
.orc_lookup : AT(ADDR(.orc_lookup) - LOAD_OFFSET) { \
|
|
orc_lookup = .; \
|
|
. += (((SIZEOF(.text) + LOOKUP_BLOCK_SIZE - 1) / \
|
|
LOOKUP_BLOCK_SIZE) + 1) * 4; \
|
|
orc_lookup_end = .; \
|
|
}
|
|
#else
|
|
#define ORC_UNWIND_TABLE
|
|
#endif
|
|
|
|
#ifdef CONFIG_PM_TRACE
|
|
#define TRACEDATA \
|
|
. = ALIGN(4); \
|
|
.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
|
|
__tracedata_start = .; \
|
|
KEEP(*(.tracedata)) \
|
|
__tracedata_end = .; \
|
|
}
|
|
#else
|
|
#define TRACEDATA
|
|
#endif
|
|
|
|
#define NOTES \
|
|
.notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
|
|
__start_notes = .; \
|
|
KEEP(*(.note.*)) \
|
|
__stop_notes = .; \
|
|
} NOTES_HEADERS \
|
|
NOTES_HEADERS_RESTORE
|
|
|
|
#define INIT_SETUP(initsetup_align) \
|
|
. = ALIGN(initsetup_align); \
|
|
__setup_start = .; \
|
|
KEEP(*(.init.setup)) \
|
|
__setup_end = .;
|
|
|
|
#define INIT_CALLS_LEVEL(level) \
|
|
__initcall##level##_start = .; \
|
|
KEEP(*(.initcall##level##.init)) \
|
|
KEEP(*(.initcall##level##s.init)) \
|
|
|
|
#define INIT_CALLS \
|
|
__initcall_start = .; \
|
|
KEEP(*(.initcallearly.init)) \
|
|
INIT_CALLS_LEVEL(0) \
|
|
INIT_CALLS_LEVEL(1) \
|
|
INIT_CALLS_LEVEL(2) \
|
|
INIT_CALLS_LEVEL(3) \
|
|
INIT_CALLS_LEVEL(4) \
|
|
INIT_CALLS_LEVEL(5) \
|
|
INIT_CALLS_LEVEL(rootfs) \
|
|
INIT_CALLS_LEVEL(6) \
|
|
INIT_CALLS_LEVEL(7) \
|
|
__initcall_end = .;
|
|
|
|
#define CON_INITCALL \
|
|
__con_initcall_start = .; \
|
|
KEEP(*(.con_initcall.init)) \
|
|
__con_initcall_end = .;
|
|
|
|
/* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */
|
|
#define KUNIT_TABLE() \
|
|
. = ALIGN(8); \
|
|
__kunit_suites_start = .; \
|
|
KEEP(*(.kunit_test_suites)) \
|
|
__kunit_suites_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 -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
|
|
*/
|
|
#if defined(CONFIG_KASAN_GENERIC) || defined(CONFIG_KCSAN)
|
|
# ifdef CONFIG_CONSTRUCTORS
|
|
# define SANITIZER_DISCARDS \
|
|
*(.eh_frame)
|
|
# else
|
|
# define SANITIZER_DISCARDS \
|
|
*(.init_array) *(.init_array.*) \
|
|
*(.eh_frame)
|
|
# endif
|
|
#else
|
|
# define SANITIZER_DISCARDS
|
|
#endif
|
|
|
|
#define COMMON_DISCARDS \
|
|
SANITIZER_DISCARDS \
|
|
*(.discard) \
|
|
*(.discard.*) \
|
|
*(.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 = .;
|