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 #define LOAD_OFFSET __PAGE_OFFSET
13 #include <asm-generic/vmlinux.lds.h>
14 #include <asm/thread_info.h>
16 #include <asm/cache.h>
19 OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
21 ENTRY(phys_startup_32)
25 text PT_LOAD FLAGS(5); /* R_E */
26 data PT_LOAD FLAGS(7); /* RWE */
27 note PT_NOTE FLAGS(0); /* ___ */
31 . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
32 phys_startup_32 = startup_32 - LOAD_OFFSET;
34 .text.head : AT(ADDR(.text.head) - LOAD_OFFSET) {
35 _text = .; /* Text and read-only data */
40 .text : AT(ADDR(.text) - LOAD_OFFSET) {
41 . = ALIGN(PAGE_SIZE); /* not really needed, already page aligned */
49 _etext = .; /* End of text section */
52 . = ALIGN(16); /* Exception table */
53 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) {
54 __start___ex_table = .;
56 __stop___ex_table = .;
67 .data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
73 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
81 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
87 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
88 *(.data.cacheline_aligned)
91 /* rarely changed data like cpu maps */
93 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
95 _edata = .; /* End of data section */
98 . = ALIGN(THREAD_SIZE); /* init_task */
99 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
103 /* might get freed after init */
104 . = ALIGN(PAGE_SIZE);
105 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
110 /* will be freed after init
111 * Following ALIGN() is required to make sure no other data falls on the
112 * same page where __smp_alt_end is pointing as that page might be freed
113 * after boot. Always make sure that ALIGN() directive is present after
114 * the section which contains __smp_alt_end.
116 . = ALIGN(PAGE_SIZE);
118 /* will be freed after init */
119 . = ALIGN(PAGE_SIZE); /* Init code and data */
120 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
126 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) {
130 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) {
135 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
136 __initcall_start = .;
140 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
141 __con_initcall_start = .;
142 *(.con_initcall.init)
143 __con_initcall_end = .;
145 .x86cpuvendor.init : AT(ADDR(.x86cpuvendor.init) - LOAD_OFFSET) {
146 __x86cpuvendor_start = .;
147 *(.x86cpuvendor.init)
148 __x86cpuvendor_end = .;
152 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
153 __alt_instructions = .;
155 __alt_instructions_end = .;
157 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
158 *(.altinstr_replacement)
161 .parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
162 __parainstructions = .;
164 __parainstructions_end = .;
166 /* .exit.text is discard at runtime, not link time, to deal with references
167 from .altinstructions and .eh_frame */
168 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
171 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
174 #if defined(CONFIG_BLK_DEV_INITRD)
175 . = ALIGN(PAGE_SIZE);
176 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) {
177 __initramfs_start = .;
182 . = ALIGN(PAGE_SIZE);
183 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) {
186 *(.data.percpu.shared_aligned)
189 . = ALIGN(PAGE_SIZE);
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 */
201 . = ALIGN(PAGE_SIZE);
205 /* Sections to be discarded */