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>
9 #include <linux/config.h>
11 #undef i386 /* in case the preprocessor is a 32bit one */
13 OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
14 OUTPUT_ARCH(i386:x86-64)
15 ENTRY(phys_startup_64)
20 phys_startup_64 = startup_64 - LOAD_OFFSET;
21 _text = .; /* Text and read-only data */
22 .text : AT(ADDR(.text) - LOAD_OFFSET) {
23 /* First the code that has to be first for bootstrapping */
25 /* Then all the functions that are "hot" in profiles, to group them
26 onto the same hugetlb entry */
27 #include "functionlist"
36 /* out-of-line lock text */
37 .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }
39 _etext = .; /* End of text section */
41 . = ALIGN(16); /* Exception table */
42 __start___ex_table = .;
43 __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
44 __stop___ex_table = .;
49 .data : AT(ADDR(.data) - LOAD_OFFSET) {
54 _edata = .; /* End of data section */
56 __bss_start = .; /* BSS */
57 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
64 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
65 .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
66 *(.data.cacheline_aligned)
68 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
69 .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
73 #define VSYSCALL_ADDR (-10*1024*1024)
74 #define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
75 #define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
77 #define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
78 #define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)
80 #define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
81 #define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)
84 .vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) }
85 __vsyscall_0 = VSYSCALL_VIRT_ADDR;
87 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
88 .xtime_lock : AT(VLOAD(.xtime_lock)) { *(.xtime_lock) }
89 xtime_lock = VVIRT(.xtime_lock);
91 .vxtime : AT(VLOAD(.vxtime)) { *(.vxtime) }
92 vxtime = VVIRT(.vxtime);
94 .wall_jiffies : AT(VLOAD(.wall_jiffies)) { *(.wall_jiffies) }
95 wall_jiffies = VVIRT(.wall_jiffies);
97 .sys_tz : AT(VLOAD(.sys_tz)) { *(.sys_tz) }
98 sys_tz = VVIRT(.sys_tz);
100 .sysctl_vsyscall : AT(VLOAD(.sysctl_vsyscall)) { *(.sysctl_vsyscall) }
101 sysctl_vsyscall = VVIRT(.sysctl_vsyscall);
103 .xtime : AT(VLOAD(.xtime)) { *(.xtime) }
104 xtime = VVIRT(.xtime);
106 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
107 .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
108 jiffies = VVIRT(.jiffies);
110 .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) { *(.vsyscall_1) }
111 .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) { *(.vsyscall_2) }
112 .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) }
114 . = VSYSCALL_VIRT_ADDR + 4096;
117 #undef VSYSCALL_PHYS_ADDR
118 #undef VSYSCALL_VIRT_ADDR
124 . = ALIGN(8192); /* init_task */
125 .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
130 .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
131 *(.data.page_aligned)
134 . = ALIGN(4096); /* Init code and data */
136 .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
141 __initdata_begin = .;
142 .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
146 .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
148 __initcall_start = .;
149 .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
159 __con_initcall_start = .;
160 .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
161 *(.con_initcall.init)
163 __con_initcall_end = .;
166 __alt_instructions = .;
167 .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
170 __alt_instructions_end = .;
171 .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
172 *(.altinstr_replacement)
174 /* .exit.text is discard at runtime, not link time, to deal with references
175 from .altinstructions and .eh_frame */
176 .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
177 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
179 __initramfs_start = .;
180 .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
182 /* temporary here to work around NR_CPUS. If you see this comment in 2.6.17+
186 . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
188 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
193 .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
199 /* Sections to be discarded */
202 #ifndef CONFIG_UNWIND_INFO