summaryrefslogtreecommitdiffstats
path: root/arch/s390/kernel/vmlinux.lds.S
diff options
context:
space:
mode:
Diffstat (limited to 'arch/s390/kernel/vmlinux.lds.S')
-rw-r--r--arch/s390/kernel/vmlinux.lds.S243
1 files changed, 243 insertions, 0 deletions
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
new file mode 100644
index 0000000000..2ae201ebf9
--- /dev/null
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -0,0 +1,243 @@
+/* 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
+{
+ . = 0x100000;
+ .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 = .;
+
+ RW_DATA(0x100, PAGE_SIZE, THREAD_SIZE)
+ 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)
+ }
+ . = ALIGN(PAGE_SIZE);
+ _eamode31 = .;
+
+ /* early.c uses stsi, which requires page aligned data. */
+ . = ALIGN(PAGE_SIZE);
+ INIT_DATA_SECTION(0x100)
+
+ PERCPU_SECTION(0x100)
+
+ .dynsym ALIGN(8) : {
+ __dynsym_start = .;
+ *(.dynsym)
+ __dynsym_end = .;
+ }
+ .rela.dyn ALIGN(8) : {
+ __rela_dyn_start = .;
+ *(.rela*)
+ __rela_dyn_end = .;
+ }
+
+ . = ALIGN(PAGE_SIZE);
+ __init_end = .; /* freed after init ends here */
+
+ BSS_SECTION(PAGE_SIZE, 4 * PAGE_SIZE, PAGE_SIZE)
+
+ . = ALIGN(PAGE_SIZE);
+ _end = . ;
+
+ /*
+ * uncompressed image info used by the decompressor
+ * it should match struct vmlinux_info
+ */
+ .vmlinux.info 0 (INFO) : {
+ QUAD(_stext) /* default_lma */
+ 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(__dynsym_start) /* dynsym_start */
+ QUAD(__rela_dyn_start) /* rela_dyn_start */
+ QUAD(__rela_dyn_end) /* rela_dyn_end */
+ QUAD(_eamode31 - _samode31) /* amode31_size */
+ QUAD(init_mm)
+ QUAD(swapper_pg_dir)
+ QUAD(invalid_pg_dir)
+#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
+
+ /* Debugging sections. */
+ STABS_DEBUG
+ DWARF_DEBUG
+ ELF_DETAILS
+
+ /* Sections to be discarded */
+ DISCARDS
+ /DISCARD/ : {
+ *(.eh_frame)
+ *(.interp)
+ }
+}