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13a9cd42 TG |
1 | /* ld script to make x86-64 Linux kernel |
2 | * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>; | |
3 | */ | |
4 | ||
5 | #define LOAD_OFFSET __START_KERNEL_map | |
6 | ||
7 | #include <asm-generic/vmlinux.lds.h> | |
8 | #include <asm/page.h> | |
9 | ||
10 | #undef i386 /* in case the preprocessor is a 32bit one */ | |
11 | ||
12 | OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64") | |
13 | OUTPUT_ARCH(i386:x86-64) | |
14 | ENTRY(phys_startup_64) | |
15 | jiffies_64 = jiffies; | |
16 | _proxy_pda = 1; | |
17 | PHDRS { | |
18 | text PT_LOAD FLAGS(5); /* R_E */ | |
19 | data PT_LOAD FLAGS(7); /* RWE */ | |
20 | user PT_LOAD FLAGS(7); /* RWE */ | |
21 | data.init PT_LOAD FLAGS(7); /* RWE */ | |
22 | note PT_NOTE FLAGS(4); /* R__ */ | |
23 | } | |
24 | SECTIONS | |
25 | { | |
26 | . = __START_KERNEL; | |
27 | phys_startup_64 = startup_64 - LOAD_OFFSET; | |
28 | _text = .; /* Text and read-only data */ | |
29 | .text : AT(ADDR(.text) - LOAD_OFFSET) { | |
30 | /* First the code that has to be first for bootstrapping */ | |
31 | *(.text.head) | |
32 | _stext = .; | |
33 | /* Then the rest */ | |
34 | TEXT_TEXT | |
35 | SCHED_TEXT | |
36 | LOCK_TEXT | |
37 | KPROBES_TEXT | |
38 | *(.fixup) | |
39 | *(.gnu.warning) | |
40 | } :text = 0x9090 | |
41 | /* out-of-line lock text */ | |
42 | .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) } | |
43 | ||
44 | _etext = .; /* End of text section */ | |
45 | ||
46 | . = ALIGN(16); /* Exception table */ | |
47 | __start___ex_table = .; | |
48 | __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) } | |
49 | __stop___ex_table = .; | |
50 | ||
51 | NOTES :text :note | |
52 | ||
53 | BUG_TABLE :text | |
54 | ||
55 | RODATA | |
56 | ||
57 | . = ALIGN(4); | |
58 | .tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { | |
59 | __tracedata_start = .; | |
60 | *(.tracedata) | |
61 | __tracedata_end = .; | |
62 | } | |
63 | ||
64 | . = ALIGN(PAGE_SIZE); /* Align data segment to page size boundary */ | |
65 | /* Data */ | |
66 | .data : AT(ADDR(.data) - LOAD_OFFSET) { | |
67 | DATA_DATA | |
68 | CONSTRUCTORS | |
69 | } :data | |
70 | ||
71 | _edata = .; /* End of data section */ | |
72 | ||
73 | . = ALIGN(PAGE_SIZE); | |
74 | . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); | |
75 | .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) { | |
76 | *(.data.cacheline_aligned) | |
77 | } | |
78 | . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES); | |
79 | .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) { | |
80 | *(.data.read_mostly) | |
81 | } | |
82 | ||
83 | #define VSYSCALL_ADDR (-10*1024*1024) | |
84 | #define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095)) | |
85 | #define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095)) | |
86 | ||
87 | #define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR) | |
88 | #define VLOAD(x) (ADDR(x) - VLOAD_OFFSET) | |
89 | ||
90 | #define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR) | |
91 | #define VVIRT(x) (ADDR(x) - VVIRT_OFFSET) | |
92 | ||
93 | . = VSYSCALL_ADDR; | |
94 | .vsyscall_0 : AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) } :user | |
95 | __vsyscall_0 = VSYSCALL_VIRT_ADDR; | |
96 | ||
97 | . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); | |
98 | .vsyscall_fn : AT(VLOAD(.vsyscall_fn)) { *(.vsyscall_fn) } | |
99 | . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); | |
100 | .vsyscall_gtod_data : AT(VLOAD(.vsyscall_gtod_data)) | |
101 | { *(.vsyscall_gtod_data) } | |
102 | vsyscall_gtod_data = VVIRT(.vsyscall_gtod_data); | |
103 | .vsyscall_clock : AT(VLOAD(.vsyscall_clock)) | |
104 | { *(.vsyscall_clock) } | |
105 | vsyscall_clock = VVIRT(.vsyscall_clock); | |
106 | ||
107 | ||
108 | .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) | |
109 | { *(.vsyscall_1) } | |
110 | .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) | |
111 | { *(.vsyscall_2) } | |
112 | ||
113 | .vgetcpu_mode : AT(VLOAD(.vgetcpu_mode)) { *(.vgetcpu_mode) } | |
114 | vgetcpu_mode = VVIRT(.vgetcpu_mode); | |
115 | ||
116 | . = ALIGN(CONFIG_X86_L1_CACHE_BYTES); | |
117 | .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) } | |
118 | jiffies = VVIRT(.jiffies); | |
119 | ||
120 | .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) | |
121 | { *(.vsyscall_3) } | |
122 | ||
123 | . = VSYSCALL_VIRT_ADDR + 4096; | |
124 | ||
125 | #undef VSYSCALL_ADDR | |
126 | #undef VSYSCALL_PHYS_ADDR | |
127 | #undef VSYSCALL_VIRT_ADDR | |
128 | #undef VLOAD_OFFSET | |
129 | #undef VLOAD | |
130 | #undef VVIRT_OFFSET | |
131 | #undef VVIRT | |
132 | ||
133 | . = ALIGN(8192); /* init_task */ | |
134 | .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) { | |
135 | *(.data.init_task) | |
136 | }:data.init | |
137 | ||
138 | . = ALIGN(4096); | |
139 | .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) { | |
140 | *(.data.page_aligned) | |
141 | } | |
142 | ||
143 | /* might get freed after init */ | |
144 | . = ALIGN(4096); | |
145 | __smp_alt_begin = .; | |
146 | __smp_locks = .; | |
147 | .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) { | |
148 | *(.smp_locks) | |
149 | } | |
150 | __smp_locks_end = .; | |
151 | . = ALIGN(4096); | |
152 | __smp_alt_end = .; | |
153 | ||
154 | . = ALIGN(4096); /* Init code and data */ | |
155 | __init_begin = .; | |
156 | .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) { | |
157 | _sinittext = .; | |
158 | *(.init.text) | |
159 | _einittext = .; | |
160 | } | |
161 | __initdata_begin = .; | |
162 | .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) } | |
163 | __initdata_end = .; | |
164 | . = ALIGN(16); | |
165 | __setup_start = .; | |
166 | .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) } | |
167 | __setup_end = .; | |
168 | __initcall_start = .; | |
169 | .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) { | |
170 | INITCALLS | |
171 | } | |
172 | __initcall_end = .; | |
173 | __con_initcall_start = .; | |
174 | .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) { | |
175 | *(.con_initcall.init) | |
176 | } | |
177 | __con_initcall_end = .; | |
178 | SECURITY_INIT | |
179 | . = ALIGN(8); | |
180 | __alt_instructions = .; | |
181 | .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) { | |
182 | *(.altinstructions) | |
183 | } | |
184 | __alt_instructions_end = .; | |
185 | .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) { | |
186 | *(.altinstr_replacement) | |
187 | } | |
188 | /* .exit.text is discard at runtime, not link time, to deal with references | |
189 | from .altinstructions and .eh_frame */ | |
190 | .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) } | |
191 | .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) } | |
192 | ||
193 | /* vdso blob that is mapped into user space */ | |
194 | vdso_start = . ; | |
195 | .vdso : AT(ADDR(.vdso) - LOAD_OFFSET) { *(.vdso) } | |
196 | . = ALIGN(4096); | |
197 | vdso_end = .; | |
198 | ||
199 | #ifdef CONFIG_BLK_DEV_INITRD | |
200 | . = ALIGN(4096); | |
201 | __initramfs_start = .; | |
202 | .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) } | |
203 | __initramfs_end = .; | |
204 | #endif | |
205 | ||
206 | PERCPU(4096) | |
207 | ||
208 | . = ALIGN(4096); | |
209 | __init_end = .; | |
210 | ||
211 | . = ALIGN(4096); | |
212 | __nosave_begin = .; | |
213 | .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) } | |
214 | . = ALIGN(4096); | |
215 | __nosave_end = .; | |
216 | ||
217 | __bss_start = .; /* BSS */ | |
218 | .bss : AT(ADDR(.bss) - LOAD_OFFSET) { | |
219 | *(.bss.page_aligned) | |
220 | *(.bss) | |
221 | } | |
222 | __bss_stop = .; | |
223 | ||
224 | _end = . ; | |
225 | ||
226 | /* Sections to be discarded */ | |
227 | /DISCARD/ : { | |
228 | *(.exitcall.exit) | |
229 | *(.eh_frame) | |
230 | } | |
231 | ||
232 | STABS_DEBUG | |
233 | ||
234 | DWARF_DEBUG | |
235 | } |