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(4); /* R__ */
37 . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
38 phys_startup_32 = startup_32 - LOAD_OFFSET;
40 .text : AT(ADDR(.text) - LOAD_OFFSET) {
41 _text = .; /* Text and read-only data */
48 _etext = .; /* End of text section */
51 . = ALIGN(16); /* Exception table */
52 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
53 __start___ex_table = .;
55 __stop___ex_table = .;
61 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
62 __tracedata_start = .;
69 .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
74 .paravirtprobe : AT(ADDR(.paravirtprobe) - LOAD_OFFSET) {
75 __start_paravirtprobe = .;
77 __stop_paravirtprobe = .;
81 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
89 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
94 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
95 *(.data.cacheline_aligned)
98 /* rarely changed data like cpu maps */
100 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
102 _edata = .; /* End of data section */
105 . = ALIGN(THREAD_SIZE); /* init_task */
106 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
110 /* might get freed after init */
112 .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
114 __smp_alt_instructions = .;
115 *(.smp_altinstructions)
116 __smp_alt_instructions_end = .;
119 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
124 .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
125 *(.smp_altinstr_replacement)
128 /* will be freed after init
129 * Following ALIGN() is required to make sure no other data falls on the
130 * same page where __smp_alt_end is pointing as that page might be freed
131 * after boot. Always make sure that ALIGN() directive is present after
132 * the section which contains __smp_alt_end.
136 /* will be freed after init */
137 . = ALIGN(4096); /* Init code and data */
138 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
144 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
146 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
151 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
152 __initcall_start = .;
156 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
157 __con_initcall_start = .;
158 *(.con_initcall.init)
159 __con_initcall_end = .;
163 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
164 __alt_instructions = .;
166 __alt_instructions_end = .;
168 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
169 *(.altinstr_replacement)
172 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
173 __start_parainstructions = .;
175 __stop_parainstructions = .;
177 /* .exit.text is discard at runtime, not link time, to deal with references
178 from .altinstructions and .eh_frame */
179 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
180 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
182 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
183 __initramfs_start = .;
187 . = ALIGN(L1_CACHE_BYTES);
188 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
194 /* freed after init ends here */
196 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
198 __bss_start = .; /* BSS */
204 /* This is where the kernel creates the early boot page tables */
209 /* Sections to be discarded */