/* ld script to make i386 Linux kernel
* Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
+ *
+ * Don't define absolute symbols until and unless you know that symbol
+ * value is should remain constant even if kernel image is relocated
+ * at run time. Absolute symbols are not relocated. If symbol value should
+ * change if kernel is relocated, make the symbol section relative and
+ * put it inside the section definition.
*/
+/* Don't define absolute symbols until and unless you know that symbol
+ * value is should remain constant even if kernel image is relocated
+ * at run time. Absolute symbols are not relocated. If symbol value should
+ * change if kernel is relocated, make the symbol section relative and
+ * put it inside the section definition.
+ */
+#define LOAD_OFFSET __PAGE_OFFSET
+
#include <asm-generic/vmlinux.lds.h>
#include <asm/thread_info.h>
-
-#include <linux/config.h>
#include <asm/page.h>
-#include <asm/asm_offsets.h>
+#include <asm/cache.h>
+#include <asm/boot.h>
OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
OUTPUT_ARCH(i386)
-ENTRY(startup_32)
+ENTRY(phys_startup_32)
jiffies = jiffies_64;
+_proxy_pda = 0;
+
+PHDRS {
+ text PT_LOAD FLAGS(5); /* R_E */
+ data PT_LOAD FLAGS(7); /* RWE */
+ note PT_NOTE FLAGS(4); /* R__ */
+}
SECTIONS
{
- . = __PAGE_OFFSET + 0x100000;
+/* xen i386 redefineds LOAD_OFFSET to zero on page.h
+ quintela@redhat.com */
+#ifdef CONFIG_XEN
+ . = __PAGE_OFFSET + LOAD_PHYSICAL_ADDR;
+#else
+ . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
+#endif
+ phys_startup_32 = startup_32 - LOAD_OFFSET;
/* read-only */
- _text = .; /* Text and read-only data */
- .text : {
+ .text : AT(ADDR(.text) - LOAD_OFFSET) {
+ _text = .; /* Text and read-only data */
*(.text)
SCHED_TEXT
+ LOCK_TEXT
+ KPROBES_TEXT
*(.fixup)
*(.gnu.warning)
- } = 0x9090
-
-#ifdef CONFIG_X86_4G
- . = ALIGN(PAGE_SIZE_asm);
- __entry_tramp_start = .;
- . = FIX_ENTRY_TRAMPOLINE_0_addr;
- __start___entry_text = .;
- .entry.text : AT (__entry_tramp_start) { *(.entry.text) }
- __entry_tramp_end = __entry_tramp_start + SIZEOF(.entry.text);
- . = __entry_tramp_end;
- . = ALIGN(PAGE_SIZE_asm);
-#else
- .entry.text : { *(.entry.text) }
-#endif
-
- _etext = .; /* End of text section */
+ _etext = .; /* End of text section */
+ } :text = 0x9090
. = ALIGN(16); /* Exception table */
- __start___ex_table = .;
- __ex_table : { *(__ex_table) }
- __stop___ex_table = .;
+ __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
+ __start___ex_table = .;
+ *(__ex_table)
+ __stop___ex_table = .;
+ }
RODATA
+ BUG_TABLE
+
+ . = ALIGN(4);
+ .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
+ __tracedata_start = .;
+ *(.tracedata)
+ __tracedata_end = .;
+ }
+
+ . = ALIGN(4096);
/* writeable */
- .data : { /* Data */
+ . = ALIGN(4096);
+ .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
*(.data)
CONSTRUCTORS
- }
+ } :data
+
+ .paravirtprobe : AT(ADDR(.paravirtprobe) - LOAD_OFFSET) {
+ __start_paravirtprobe = .;
+ *(.paravirtprobe)
+ __stop_paravirtprobe = .;
+ }
+
+ . = ALIGN(4096);
+ .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
+ __nosave_begin = .;
+ *(.data.nosave)
+ . = ALIGN(4096);
+ __nosave_end = .;
+ }
- . = ALIGN(PAGE_SIZE_asm);
- __nosave_begin = .;
- .data_nosave : { *(.data.nosave) }
- . = ALIGN(PAGE_SIZE_asm);
- __nosave_end = .;
+ . = ALIGN(4096);
+ .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
+ *(.data.idt)
+ }
. = ALIGN(32);
- .data.cacheline_aligned : { *(.data.cacheline_aligned) }
+ .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
+ *(.data.cacheline_aligned)
+ }
- _edata = .; /* End of data section */
+ /* rarely changed data like cpu maps */
+ . = ALIGN(32);
+ .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
+ *(.data.read_mostly)
+ _edata = .; /* End of data section */
+ }
. = ALIGN(THREAD_SIZE); /* init_task */
- .data.init_task : { *(.data.init_task) }
+ .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
+ *(.data.init_task)
+ }
+
+ /* might get freed after init */
+ . = ALIGN(4096);
+ .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
+ __smp_alt_begin = .;
+ __smp_alt_instructions = .;
+ *(.smp_altinstructions)
+ __smp_alt_instructions_end = .;
+ }
+ . = ALIGN(4);
+ .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
+ __smp_locks = .;
+ *(.smp_locks)
+ __smp_locks_end = .;
+ }
+ .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
+ *(.smp_altinstr_replacement)
+ __smp_alt_end = .;
+ }
+ /* will be freed after init
+ * Following ALIGN() is required to make sure no other data falls on the
+ * same page where __smp_alt_end is pointing as that page might be freed
+ * after boot. Always make sure that ALIGN() directive is present after
+ * the section which contains __smp_alt_end.
+ */
+ . = ALIGN(4096);
/* will be freed after init */
- . = ALIGN(PAGE_SIZE_asm); /* Init code and data */
- __init_begin = .;
- .init.text : {
+ . = ALIGN(4096); /* Init code and data */
+ .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
+ __init_begin = .;
_sinittext = .;
*(.init.text)
_einittext = .;
}
- .init.data : { *(.init.data) }
+ .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
. = ALIGN(16);
- __setup_start = .;
- .init.setup : { *(.init.setup) }
- __setup_end = .;
- __start___param = .;
- __param : { *(__param) }
- __stop___param = .;
- __initcall_start = .;
- .initcall.init : {
- *(.initcall1.init)
- *(.initcall2.init)
- *(.initcall3.init)
- *(.initcall4.init)
- *(.initcall5.init)
- *(.initcall6.init)
- *(.initcall7.init)
- }
- __initcall_end = .;
- __con_initcall_start = .;
- .con_initcall.init : { *(.con_initcall.init) }
- __con_initcall_end = .;
+ .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
+ __setup_start = .;
+ *(.init.setup)
+ __setup_end = .;
+ }
+ .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
+ __initcall_start = .;
+ INITCALLS
+ __initcall_end = .;
+ }
+ .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
+ __con_initcall_start = .;
+ *(.con_initcall.init)
+ __con_initcall_end = .;
+ }
SECURITY_INIT
. = ALIGN(4);
- __alt_instructions = .;
- .altinstructions : { *(.altinstructions) }
- __alt_instructions_end = .;
- .altinstr_replacement : { *(.altinstr_replacement) }
+ .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
+ __alt_instructions = .;
+ *(.altinstructions)
+ __alt_instructions_end = .;
+ }
+ .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
+ *(.altinstr_replacement)
+ }
+ . = ALIGN(4);
+ .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
+ __start_parainstructions = .;
+ *(.parainstructions)
+ __stop_parainstructions = .;
+ }
/* .exit.text is discard at runtime, not link time, to deal with references
from .altinstructions and .eh_frame */
- .exit.text : { *(.exit.text) }
- .exit.data : { *(.exit.data) }
- . = ALIGN(PAGE_SIZE_asm);
- __initramfs_start = .;
- .init.ramfs : { *(.init.ramfs) }
- __initramfs_end = .;
- . = ALIGN(32);
- __per_cpu_start = .;
- .data.percpu : { *(.data.percpu) }
- __per_cpu_end = .;
- . = ALIGN(PAGE_SIZE_asm);
- __init_end = .;
+ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
+ .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
+ . = ALIGN(4096);
+ .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
+ __initramfs_start = .;
+ *(.init.ramfs)
+ __initramfs_end = .;
+ }
+ . = ALIGN(L1_CACHE_BYTES);
+ .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
+ __per_cpu_start = .;
+ *(.data.percpu)
+ __per_cpu_end = .;
+ }
+ . = ALIGN(4096);
/* freed after init ends here */
-
- . = ALIGN(PAGE_SIZE_asm);
- .data.page_aligned_tss : { *(.data.tss) }
-
- . = ALIGN(PAGE_SIZE_asm);
- .data.page_aligned_default_ldt : { *(.data.default_ldt) }
-
- . = ALIGN(PAGE_SIZE_asm);
- .data.page_aligned_idt : { *(.data.idt) }
-
- . = ALIGN(PAGE_SIZE_asm);
- .data.page_aligned_gdt : { *(.data.gdt) }
-
- __bss_start = .; /* BSS */
- .bss : {
+
+ .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
+ __init_end = .;
+ __bss_start = .; /* BSS */
*(.bss.page_aligned)
*(.bss)
+ . = ALIGN(4);
+ __bss_stop = .;
+ _end = . ;
+ /* This is where the kernel creates the early boot page tables */
+ . = ALIGN(4096);
+ pg0 = . ;
}
- . = ALIGN(4);
- __bss_stop = .;
-
- _end = . ;
-
- /* This is where the kernel creates the early boot page tables */
- . = ALIGN(4096);
- pg0 = .;
/* Sections to be discarded */
/DISCARD/ : {
*(.exitcall.exit)
}
- /* Stabs debugging sections. */
- .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) }
- .comment 0 : { *(.comment) }
+ STABS_DEBUG
+ DWARF_DEBUG
+ NOTES
}