1 /* ld script to make x86-64 Linux kernel
2 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
5 #define LOAD_OFFSET __START_KERNEL_map
7 #include <asm-generic/vmlinux.lds.h>
10 #undef i386 /* in case the preprocessor is a 32bit one */
12 OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
13 OUTPUT_ARCH(i386:x86-64)
14 ENTRY(phys_startup_64)
19 phys_startup_64 = startup_64 - LOAD_OFFSET;
20 _text = .; /* Text and read-only data */
21 .text : AT(ADDR(.text) - LOAD_OFFSET) {
22 /* First the code that has to be first for bootstrapping */
24 /* Then all the functions that are "hot" in profiles, to group them
25 onto the same hugetlb entry */
26 #include "functionlist"
35 /* out-of-line lock text */
36 .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }
38 _etext = .; /* End of text section */
40 . = ALIGN(16); /* Exception table */
41 __start___ex_table = .;
42 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
43 __stop___ex_table = .;
47 #ifdef CONFIG_STACK_UNWIND
49 .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {
57 .data : AT(ADDR(.data) - LOAD_OFFSET) {
62 _edata = .; /* End of data section */
64 __bss_start = .; /* BSS */
65 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
72 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
73 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
74 *(.data.cacheline_aligned)
76 . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
77 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
81 #define VSYSCALL_ADDR (-10*1024*1024)
82 #define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
83 #define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
85 #define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
86 #define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
88 #define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
89 #define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
92 .vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) }
93 __vsyscall_0 = VSYSCALL_VIRT_ADDR;
95 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
96 .xtime_lock : AT(VLOAD(.xtime_lock)) { *(.xtime_lock) }
97 xtime_lock = VVIRT(.xtime_lock);
99 .vxtime : AT(VLOAD(.vxtime)) { *(.vxtime) }
100 vxtime = VVIRT(.vxtime);
102 .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
103 vgetcpu_mode = VVIRT(.vgetcpu_mode);
105 .wall_jiffies : AT(VLOAD(.wall_jiffies)) { *(.wall_jiffies) }
106 wall_jiffies = VVIRT(.wall_jiffies);
108 .sys_tz : AT(VLOAD(.sys_tz)) { *(.sys_tz) }
109 sys_tz = VVIRT(.sys_tz);
111 .sysctl_vsyscall : AT(VLOAD(.sysctl_vsyscall)) { *(.sysctl_vsyscall) }
112 sysctl_vsyscall = VVIRT(.sysctl_vsyscall);
114 .xtime : AT(VLOAD(.xtime)) { *(.xtime) }
115 xtime = VVIRT(.xtime);
117 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
118 .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
119 jiffies = VVIRT(.jiffies);
121 .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) { *(.vsyscall_1) }
122 .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) { *(.vsyscall_2) }
123 .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) }
125 . = VSYSCALL_VIRT_ADDR + 4096;
128 #undef VSYSCALL_PHYS_ADDR
129 #undef VSYSCALL_VIRT_ADDR
135 . = ALIGN(8192); /* init_task */
136 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
141 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
142 *(.data.page_aligned)
145 /* might get freed after init */
148 __smp_alt_instructions = .;
149 .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
150 *(.smp_altinstructions)
152 __smp_alt_instructions_end = .;
155 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
159 .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
160 *(.smp_altinstr_replacement)
165 . = ALIGN(4096); /* Init code and data */
167 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
172 __initdata_begin = .;
173 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
177 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
179 __initcall_start = .;
180 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
190 __con_initcall_start = .;
191 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
192 *(.con_initcall.init)
194 __con_initcall_end = .;
197 __alt_instructions = .;
198 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
201 __alt_instructions_end = .;
202 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
203 *(.altinstr_replacement)
205 /* .exit.text is discard at runtime, not link time, to deal with references
206 from .altinstructions and .eh_frame */
207 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
208 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
210 __initramfs_start = .;
211 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
213 /* temporary here to work around NR_CPUS. If you see this comment in 2.6.17+
217 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
219 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
224 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
230 /* Sections to be discarded */
233 #ifndef CONFIG_UNWIND_INFO