162 lines
3.3 KiB
ArmAsm
162 lines
3.3 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/* ld script to make s390 Linux kernel
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* Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
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*/
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#include <asm/thread_info.h>
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#include <asm/page.h>
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/*
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* Put .bss..swapper_pg_dir as the first thing in .bss. This will
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* make sure it has 16k alignment.
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*/
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#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir)
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/* Handle ro_after_init data on our own. */
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#define RO_AFTER_INIT_DATA
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#include <asm-generic/vmlinux.lds.h>
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OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
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OUTPUT_ARCH(s390:64-bit)
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ENTRY(startup)
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jiffies = jiffies_64;
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PHDRS {
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text PT_LOAD FLAGS(5); /* R_E */
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data PT_LOAD FLAGS(7); /* RWE */
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note PT_NOTE FLAGS(0); /* ___ */
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}
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SECTIONS
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{
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. = 0x00000000;
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.text : {
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/* Text and read-only data */
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HEAD_TEXT
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/*
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* E.g. perf doesn't like symbols starting at address zero,
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* therefore skip the initial PSW and channel program located
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* at address zero and let _text start at 0x200.
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*/
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_text = 0x200;
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TEXT_TEXT
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SCHED_TEXT
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CPUIDLE_TEXT
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LOCK_TEXT
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KPROBES_TEXT
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IRQENTRY_TEXT
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SOFTIRQENTRY_TEXT
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*(.fixup)
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*(.gnu.warning)
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} :text = 0x0700
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. = ALIGN(PAGE_SIZE);
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_etext = .; /* End of text section */
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NOTES :text :note
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.dummy : { *(.dummy) } :data
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RO_DATA_SECTION(PAGE_SIZE)
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. = ALIGN(PAGE_SIZE);
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_sdata = .; /* Start of data section */
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. = ALIGN(PAGE_SIZE);
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__start_ro_after_init = .;
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.data..ro_after_init : {
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*(.data..ro_after_init)
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}
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EXCEPTION_TABLE(16)
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. = ALIGN(PAGE_SIZE);
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__end_ro_after_init = .;
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RW_DATA_SECTION(0x100, PAGE_SIZE, THREAD_SIZE)
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_edata = .; /* End of data section */
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/* will be freed after init */
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. = ALIGN(PAGE_SIZE); /* Init code and data */
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__init_begin = .;
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. = ALIGN(PAGE_SIZE);
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.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
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VMLINUX_SYMBOL(_sinittext) = . ;
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INIT_TEXT
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. = ALIGN(PAGE_SIZE);
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VMLINUX_SYMBOL(_einittext) = . ;
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}
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/*
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* .exit.text is discarded at runtime, not link time,
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* to deal with references from __bug_table
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*/
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.exit.text : {
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EXIT_TEXT
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}
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.exit.data : {
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EXIT_DATA
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}
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/*
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* struct alt_inst entries. From the header (alternative.h):
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* "Alternative instructions for different CPU types or capabilities"
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* Think locking instructions on spinlocks.
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* Note, that it is a part of __init region.
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*/
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. = ALIGN(8);
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.altinstructions : {
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__alt_instructions = .;
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*(.altinstructions)
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__alt_instructions_end = .;
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}
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/*
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* And here are the replacement instructions. The linker sticks
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* them as binary blobs. The .altinstructions has enough data to
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* get the address and the length of them to patch the kernel safely.
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* Note, that it is a part of __init region.
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*/
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.altinstr_replacement : {
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*(.altinstr_replacement)
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}
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/*
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* Table with the patch locations to undo expolines
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*/
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.nospec_call_table : {
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__nospec_call_start = . ;
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*(.s390_indirect*)
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__nospec_call_end = . ;
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}
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.nospec_return_table : {
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__nospec_return_start = . ;
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*(.s390_return*)
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__nospec_return_end = . ;
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}
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/* early.c uses stsi, which requires page aligned data. */
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. = ALIGN(PAGE_SIZE);
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INIT_DATA_SECTION(0x100)
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PERCPU_SECTION(0x100)
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. = ALIGN(PAGE_SIZE);
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__init_end = .; /* freed after init ends here */
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BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
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_end = . ;
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/* Debugging sections. */
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STABS_DEBUG
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DWARF_DEBUG
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/* Sections to be discarded */
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DISCARDS
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/DISCARD/ : {
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*(.eh_frame)
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}
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}
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