/* SPDX-License-Identifier: GPL-2.0 */
/* ld script to make s390 Linux kernel
* Written by Martin Schwidefsky (schwidefsky@de.ibm.com)
*/
#include <asm/thread_info.h>
#include <asm/page.h>
#include <asm/ftrace.lds.h>
/*
* Put .bss..swapper_pg_dir as the first thing in .bss. This will
* make sure it has 16k alignment.
*/
#define BSS_FIRST_SECTIONS *(.bss..swapper_pg_dir) \
*(.bss..invalid_pg_dir)
#define RO_EXCEPTION_TABLE_ALIGN 16
/* Handle ro_after_init data on our own. */
#define RO_AFTER_INIT_DATA
#define RUNTIME_DISCARD_EXIT
#define EMITS_PT_NOTE
#include <asm-generic/vmlinux.lds.h>
#include <asm/vmlinux.lds.h>
OUTPUT_FORMAT(
"elf64-s390",
"elf64-s390",
"elf64-s390")
OUTPUT_ARCH(s390:64-bit)
ENTRY(startup_continue)
jiffies = jiffies_64;
PHDRS {
text PT_LOAD FLAGS(5);
/* R_E */
data PT_LOAD FLAGS(7);
/* RWE */
note PT_NOTE FLAGS(0);
/* ___ */
}
SECTIONS
{
. = TEXT_OFFSET;
.text : {
_stext = .;
/* Start of text section */
_text = .;
/* Text and read-only data */
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
LOCK_TEXT
KPROBES_TEXT
IRQENTRY_TEXT
SOFTIRQENTRY_TEXT
FTRACE_HOTPATCH_TRAMPOLINES_TEXT
*(.text.*_indirect_*)
*(.gnu.warning)
. =
ALIGN(PAGE_SIZE);
_etext = .;
/* End of text section */
} :text = 0x0700
RO_DATA(PAGE_SIZE)
. =
ALIGN(PAGE_SIZE);
_sdata = .;
/* Start of data section */
. =
ALIGN(PAGE_SIZE);
__start_ro_after_init = .;
.
data..ro_after_init : {
*(.
data..ro_after_init)
JUMP_TABLE_DATA
} :
data
. =
ALIGN(PAGE_SIZE);
__end_ro_after_init = .;
. =
ALIGN(8);
.skey_region_table : {
__skey_region_start = .;
KEEP(*(.skey_region))
__skey_region_end = .;
}
.
data.rel.ro : {
*(.
data.rel.ro .
data.rel.ro.*)
}
.got : {
__got_start = .;
*(.got)
__got_end = .;
}
RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
.
data.rel : {
*(.
data.rel*)
}
BOOT_DATA_PRESERVED
. =
ALIGN(8);
.amode31.refs : {
_start_amode31_refs = .;
*(.amode31.refs)
_end_amode31_refs = .;
}
. =
ALIGN(PAGE_SIZE);
_edata = .;
/* End of data section */
/* will be freed after init */
. =
ALIGN(PAGE_SIZE);
/* Init code and data */
__init_begin = .;
. =
ALIGN(PAGE_SIZE);
.init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
_sinittext = .;
INIT_TEXT
. =
ALIGN(PAGE_SIZE);
_einittext = .;
}
/*
* .exit.text is discarded at runtime, not link time,
* to deal with references from __bug_table
*/
.exit.text : {
EXIT_TEXT
}
.exit.
data : {
EXIT_DATA
}
/*
* struct alt_inst entries. From the header (alternative.h):
* "Alternative instructions for different CPU types or capabilities"
* Think locking instructions on spinlocks.
* Note, that it is a part of __init region.
*/
. =
ALIGN(8);
.altinstructions : {
__alt_instructions = .;
*(.altinstructions)
__alt_instructions_end = .;
}
/*
* And here are the replacement instructions. The linker sticks
* them as binary blobs. The .altinstructions has enough data to
* get the address and the length of them to patch the kernel safely.
* Note, that it is a part of __init region.
*/
.altinstr_replacement : {
*(.altinstr_replacement)
}
/*
* Table with the patch locations to undo expolines
*/
. =
ALIGN(4);
.nospec_call_table : {
__nospec_call_start = . ;
*(.s390_indirect*)
__nospec_call_end = . ;
}
.nospec_return_table : {
__nospec_return_start = . ;
*(.s390_return*)
__nospec_return_end = . ;
}
BOOT_DATA
/*
* .amode31 section for code, data, ex_table that need to stay
* below 2 GB, even when the kernel is relocated above 2 GB.
*/
. =
ALIGN(PAGE_SIZE);
_samode31 = .;
.amode31.text : {
_stext_amode31 = .;
*(.amode31.text)
*(.amode31.text.*_indirect_*)
. =
ALIGN(PAGE_SIZE);
_etext_amode31 = .;
}
. =
ALIGN(16);
.amode31.ex_table : {
_start_amode31_ex_table = .;
KEEP(*(.amode31.ex_table))
_stop_amode31_ex_table = .;
}
. =
ALIGN(PAGE_SIZE);
.amode31.
data : {
*(.amode31.
data)
}
. = _samode31 + AMODE31_SIZE;
_eamode31 = .;
/* early.c uses stsi, which requires page aligned data. */
. =
ALIGN(PAGE_SIZE);
INIT_DATA_SECTION(0x100)
RUNTIME_CONST_VARIABLES
PERCPU_SECTION(0x100)
. =
ALIGN(PAGE_SIZE);
__init_end = .;
/* freed after init ends here */
BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
. =
ALIGN(PAGE_SIZE);
_end = . ;
/* Debugging sections. */
STABS_DEBUG
DWARF_DEBUG
ELF_DETAILS
/*
* Make sure that the .got.plt is either completely empty or it
* contains only the three reserved double words.
*/
.got.plt : {
*(.got.plt)
}
ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF(.got.plt) == 0x18,
"Unexpected GOT/PLT entries detected!")
/*
* Sections that should stay zero sized, which is safer to
* explicitly check instead of blindly discarding.
*/
.plt : {
*(.plt) *(.plt.*) *(.iplt) *(.igot .igot.plt)
}
ASSERT(SIZEOF(.plt) == 0,
"Unexpected run-time procedure linkages detected!")
.rela.dyn : {
*(.rela.*) *(.rela_*)
}
ASSERT(SIZEOF(.rela.dyn) == 0,
"Unexpected run-time relocations (.rela) detected!")
/*
* uncompressed image info used by the decompressor
* it should match struct vmlinux_info
*/
.vmlinux.info 0 (INFO) : {
QUAD(startup_continue)
/* entry */
QUAD(__bss_start - _stext)
/* image_size */
QUAD(__bss_stop - __bss_start)
/* bss_size */
QUAD(__boot_data_start)
/* bootdata_off */
QUAD(__boot_data_end - __boot_data_start)
/* bootdata_size */
QUAD(__boot_data_preserved_start)
/* bootdata_preserved_off */
QUAD(__boot_data_preserved_end -
__boot_data_preserved_start)
/* bootdata_preserved_size */
QUAD(__got_start)
/* got_start */
QUAD(__got_end)
/* got_end */
QUAD(_eamode31 - _samode31)
/* amode31_size */
QUAD(init_mm)
QUAD(swapper_pg_dir)
QUAD(invalid_pg_dir)
QUAD(__alt_instructions)
QUAD(__alt_instructions_end)
#ifdef CONFIG_KASAN
QUAD(kasan_early_shadow_page)
QUAD(kasan_early_shadow_pte)
QUAD(kasan_early_shadow_pmd)
QUAD(kasan_early_shadow_pud)
QUAD(kasan_early_shadow_p4d)
#endif
} :NONE
/* Sections to be discarded */
DISCARDS
/DISCARD/ : {
*(.eh_frame)
*(.interp)
}
}
