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 = .;
68 .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) {
69 __tracedata_start = .;
78 .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
84 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
92 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
98 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
99 *(.data.cacheline_aligned)
102 /* rarely changed data like cpu maps */
104 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
106 _edata = .; /* End of data section */
109 . = ALIGN(THREAD_SIZE); /* init_task */
110 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
114 /* might get freed after init */
116 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
121 /* will be freed after init
122 * Following ALIGN() is required to make sure no other data falls on the
123 * same page where __smp_alt_end is pointing as that page might be freed
124 * after boot. Always make sure that ALIGN() directive is present after
125 * the section which contains __smp_alt_end.
129 /* will be freed after init */
130 . = ALIGN(4096); /* Init code and data */
131 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
137 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
139 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
144 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
145 __initcall_start = .;
149 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
150 __con_initcall_start = .;
151 *(.con_initcall.init)
152 __con_initcall_end = .;
156 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
157 __alt_instructions = .;
159 __alt_instructions_end = .;
161 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
162 *(.altinstr_replacement)
165 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
166 __parainstructions = .;
168 __parainstructions_end = .;
170 /* .exit.text is discard at runtime, not link time, to deal with references
171 from .altinstructions and .eh_frame */
172 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
173 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
174 #if defined(CONFIG_BLK_DEV_INITRD)
176 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
177 __initramfs_start = .;
183 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
186 *(.data.percpu.shared_aligned)
190 /* freed after init ends here */
192 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
194 __bss_start = .; /* BSS */
200 /* This is where the kernel creates the early boot page tables */
205 /* Sections to be discarded */