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)
17 text PT_LOAD FLAGS(5); /* R_E */
18 data PT_LOAD FLAGS(7); /* RWE */
19 user PT_LOAD FLAGS(7); /* RWE */
20 note PT_NOTE FLAGS(4); /* R__ */
25 phys_startup_64 = startup_64 - LOAD_OFFSET;
26 _text = .; /* Text and read-only data */
27 .text : AT(ADDR(.text) - LOAD_OFFSET) {
28 /* First the code that has to be first for bootstrapping */
30 /* Then all the functions that are "hot" in profiles, to group them
31 onto the same hugetlb entry */
32 #include "functionlist"
41 /* out-of-line lock text */
42 .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }
44 _etext = .; /* End of text section */
46 . = ALIGN(16); /* Exception table */
47 __start___ex_table = .;
48 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
49 __stop___ex_table = .;
53 #ifdef CONFIG_STACK_UNWIND
55 .eh_frame : AT(ADDR(.eh_frame) - LOAD_OFFSET) {
63 .data : AT(ADDR(.data) - LOAD_OFFSET) {
68 _edata = .; /* End of data section */
70 __bss_start = .; /* BSS */
71 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
78 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
79 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
80 *(.data.cacheline_aligned)
82 . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
83 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
87 #define VSYSCALL_ADDR (-10*1024*1024)
88 #define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
89 #define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
91 #define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
92 #define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
94 #define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
95 #define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
98 .vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) } :user
99 __vsyscall_0 = VSYSCALL_VIRT_ADDR;
101 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
102 .xtime_lock : AT(VLOAD(.xtime_lock)) { *(.xtime_lock) }
103 xtime_lock = VVIRT(.xtime_lock);
105 .vxtime : AT(VLOAD(.vxtime)) { *(.vxtime) }
106 vxtime = VVIRT(.vxtime);
108 .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) }
109 vgetcpu_mode = VVIRT(.vgetcpu_mode);
111 .wall_jiffies : AT(VLOAD(.wall_jiffies)) { *(.wall_jiffies) }
112 wall_jiffies = VVIRT(.wall_jiffies);
114 .sys_tz : AT(VLOAD(.sys_tz)) { *(.sys_tz) }
115 sys_tz = VVIRT(.sys_tz);
117 .sysctl_vsyscall : AT(VLOAD(.sysctl_vsyscall)) { *(.sysctl_vsyscall) }
118 sysctl_vsyscall = VVIRT(.sysctl_vsyscall);
120 .xtime : AT(VLOAD(.xtime)) { *(.xtime) }
121 xtime = VVIRT(.xtime);
123 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
124 .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
125 jiffies = VVIRT(.jiffies);
127 .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) { *(.vsyscall_1) }
128 .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) { *(.vsyscall_2) }
129 .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) }
131 . = VSYSCALL_VIRT_ADDR + 4096;
134 #undef VSYSCALL_PHYS_ADDR
135 #undef VSYSCALL_VIRT_ADDR
141 . = ALIGN(8192); /* init_task */
142 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
147 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
148 *(.data.page_aligned)
151 /* might get freed after init */
154 __smp_alt_instructions = .;
155 .smp_altinstructions : AT(ADDR(.smp_altinstructions) - LOAD_OFFSET) {
156 *(.smp_altinstructions)
158 __smp_alt_instructions_end = .;
161 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
165 .smp_altinstr_replacement : AT(ADDR(.smp_altinstr_replacement) - LOAD_OFFSET) {
166 *(.smp_altinstr_replacement)
171 . = ALIGN(4096); /* Init code and data */
173 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
178 __initdata_begin = .;
179 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
183 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
185 __initcall_start = .;
186 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
196 __con_initcall_start = .;
197 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
198 *(.con_initcall.init)
200 __con_initcall_end = .;
203 __alt_instructions = .;
204 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
207 __alt_instructions_end = .;
208 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
209 *(.altinstr_replacement)
211 /* .exit.text is discard at runtime, not link time, to deal with references
212 from .altinstructions and .eh_frame */
213 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
214 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
216 __initramfs_start = .;
217 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
219 /* temporary here to work around NR_CPUS. If you see this comment in 2.6.17+
223 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
225 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
230 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
236 /* Sections to be discarded */
239 #ifndef CONFIG_UNWIND_INFO