1 /* ld script to make i386 Linux kernel
2 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
4 * Don't define absolute symbols until and unless you know that symbol
5 * value is should remain constant even if kernel image is relocated
6 * at run time. Absolute symbols are not relocated. If symbol value should
7 * change if kernel is relocated, make the symbol section relative and
8 * put it inside the section definition.
11 /* Don't define absolute symbols until and unless you know that symbol
12 * value is should remain constant even if kernel image is relocated
13 * at run time. Absolute symbols are not relocated. If symbol value should
14 * change if kernel is relocated, make the symbol section relative and
15 * put it inside the section definition.
17 #define LOAD_OFFSET __PAGE_OFFSET
19 #include <asm-generic/vmlinux.lds.h>
20 #include <asm/thread_info.h>
22 #include <asm/cache.h>
25 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
27 ENTRY(phys_startup_32)
31 text PT_LOAD FLAGS(5); /* R_E */
32 data PT_LOAD FLAGS(7); /* RWE */
33 note PT_NOTE FLAGS(0); /* ___ */
37 . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
38 phys_startup_32 = startup_32 - LOAD_OFFSET;
40 .text.head : AT(ADDR(.text.head) - LOAD_OFFSET) {
41 _text = .; /* Text and read-only data */
46 .text : AT(ADDR(.text) - LOAD_OFFSET) {
53 _etext = .; /* End of text section */
56 . = ALIGN(16); /* Exception table */
57 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
58 __start___ex_table = .;
60 __stop___ex_table = .;
66 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
67 __tracedata_start = .;
76 .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
81 .paravirtprobe : AT(ADDR(.paravirtprobe) - LOAD_OFFSET) {
82 __start_paravirtprobe = .;
84 __stop_paravirtprobe = .;
88 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
96 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
101 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
102 *(.data.cacheline_aligned)
105 /* rarely changed data like cpu maps */
107 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
109 _edata = .; /* End of data section */
112 . = ALIGN(THREAD_SIZE); /* init_task */
113 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
117 /* might get freed after init */
119 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
124 /* will be freed after init
125 * Following ALIGN() is required to make sure no other data falls on the
126 * same page where __smp_alt_end is pointing as that page might be freed
127 * after boot. Always make sure that ALIGN() directive is present after
128 * the section which contains __smp_alt_end.
132 /* will be freed after init */
133 . = ALIGN(4096); /* Init code and data */
134 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
140 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
142 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
147 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
148 __initcall_start = .;
152 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
153 __con_initcall_start = .;
154 *(.con_initcall.init)
155 __con_initcall_end = .;
159 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
160 __alt_instructions = .;
162 __alt_instructions_end = .;
164 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
165 *(.altinstr_replacement)
168 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
169 __parainstructions = .;
171 __parainstructions_end = .;
173 /* .exit.text is discard at runtime, not link time, to deal with references
174 from .altinstructions and .eh_frame */
175 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
176 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
177 #if defined(CONFIG_BLK_DEV_INITRD)
179 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
180 __initramfs_start = .;
186 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
192 /* freed after init ends here */
194 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
196 __bss_start = .; /* BSS */
202 /* This is where the kernel creates the early boot page tables */
207 /* Sections to be discarded */