/* 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) } #ifdef CONFIG_STACKPROTECTOR . = ALIGN(8); .stack_prot_table : { __stack_prot_start = .; KEEP(*(__stack_protector_loc)) __stack_prot_end = .; }#endif . = ALIGN(8); .s390dbf_info : { __s390dbf_info = .; *(.s390dbf_info) __s390dbf_info_end = .; } /* * 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 MODINFO 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_STACKPROTECTOR QUAD(__stack_prot_start) QUAD(__stack_prot_end)#endif#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) }}
/* 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)
}
#ifdef CONFIG_STACKPROTECTOR
. = ALIGN(8);
.stack_prot_table : {
__stack_prot_start = .;
KEEP(*(__stack_protector_loc))
__stack_prot_end = .;
}
#endif
. = ALIGN(8);
.s390dbf_info : {
__s390dbf_info = .;
*(.s390dbf_info)
__s390dbf_info_end = .;
}
/*
* 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
MODINFO
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_STACKPROTECTOR
QUAD(__stack_prot_start)
QUAD(__stack_prot_end)
#endif
#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)
}
}