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 = .;
63 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
64 __tracedata_start = .;
71 .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
76 .paravirtprobe : AT(ADDR(.paravirtprobe) - LOAD_OFFSET) {
77 __start_paravirtprobe = .;
79 __stop_paravirtprobe = .;
83 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
91 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
96 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
97 *(.data.cacheline_aligned)
100 /* rarely changed data like cpu maps */
102 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
104 _edata = .; /* End of data section */
107 . = ALIGN(THREAD_SIZE); /* init_task */
108 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
112 /* might get freed after init */
114 .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
116 __smp_alt_instructions = .;
117 *(.smp_altinstructions)
118 __smp_alt_instructions_end = .;
121 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
126 .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
127 *(.smp_altinstr_replacement)
130 /* will be freed after init
131 * Following ALIGN() is required to make sure no other data falls on the
132 * same page where __smp_alt_end is pointing as that page might be freed
133 * after boot. Always make sure that ALIGN() directive is present after
134 * the section which contains __smp_alt_end.
138 /* will be freed after init */
139 . = ALIGN(4096); /* Init code and data */
140 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
146 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
148 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
153 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
154 __initcall_start = .;
158 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
159 __con_initcall_start = .;
160 *(.con_initcall.init)
161 __con_initcall_end = .;
165 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
166 __alt_instructions = .;
168 __alt_instructions_end = .;
170 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
171 *(.altinstr_replacement)
174 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
175 __start_parainstructions = .;
177 __stop_parainstructions = .;
179 /* .exit.text is discard at runtime, not link time, to deal with references
180 from .altinstructions and .eh_frame */
181 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
182 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
184 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
185 __initramfs_start = .;
189 . = ALIGN(L1_CACHE_BYTES);
190 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
196 /* freed after init ends here */
198 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
200 __bss_start = .; /* BSS */
206 /* This is where the kernel creates the early boot page tables */
211 /* Sections to be discarded */