summaryrefslogtreecommitdiff
path: root/arch/x86_64/kernel/vmlinux.lds.S
blob: b81f473c4a19bd4cec12f02bae4764fc30d436cf (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/* ld script to make x86-64 Linux kernel
 * Written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>;
 */

#define LOAD_OFFSET __START_KERNEL_map

#include <asm-generic/vmlinux.lds.h>
#include <asm/page.h>
#include <linux/config.h>

#undef i386	/* in case the preprocessor is a 32bit one */

OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
ENTRY(phys_startup_64)
jiffies_64 = jiffies;
SECTIONS
{
  . = __START_KERNEL;
  phys_startup_64 = startup_64 - LOAD_OFFSET;
  _text = .;			/* Text and read-only data */
  .text :  AT(ADDR(.text) - LOAD_OFFSET) {
	/* First the code that has to be first for bootstrapping */
	*(.bootstrap.text)
	/* Then all the functions that are "hot" in profiles, to group them
           onto the same hugetlb entry */
	#include "functionlist"
	/* Then the rest */
	*(.text)
	SCHED_TEXT
	LOCK_TEXT
	KPROBES_TEXT
	*(.fixup)
	*(.gnu.warning)
	} = 0x9090
  				/* out-of-line lock text */
  .text.lock : AT(ADDR(.text.lock) - LOAD_OFFSET) { *(.text.lock) }

  _etext = .;			/* End of text section */

  . = ALIGN(16);		/* Exception table */
  __start___ex_table = .;
  __ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { *(__ex_table) }
  __stop___ex_table = .;

  RODATA

				/* Data */
  .data : AT(ADDR(.data) - LOAD_OFFSET) {
	*(.data)
	CONSTRUCTORS
	}

  _edata = .;			/* End of data section */

  __bss_start = .;		/* BSS */
  .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
	*(.bss.page_aligned)	
	*(.bss)
	}
  __bss_stop = .;

  . = ALIGN(PAGE_SIZE);
  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
  .data.cacheline_aligned : AT(ADDR(.data.cacheline_aligned) - LOAD_OFFSET) {
	*(.data.cacheline_aligned)
  }
  . = ALIGN(CONFIG_X86_INTERNODE_CACHE_BYTES);
  .data.read_mostly : AT(ADDR(.data.read_mostly) - LOAD_OFFSET) {
  	*(.data.read_mostly)
  }

#define VSYSCALL_ADDR (-10*1024*1024)
#define VSYSCALL_PHYS_ADDR ((LOADADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))
#define VSYSCALL_VIRT_ADDR ((ADDR(.data.read_mostly) + SIZEOF(.data.read_mostly) + 4095) & ~(4095))

#define VLOAD_OFFSET (VSYSCALL_ADDR - VSYSCALL_PHYS_ADDR)
#define VLOAD(x) (ADDR(x) - VLOAD_OFFSET)

#define VVIRT_OFFSET (VSYSCALL_ADDR - VSYSCALL_VIRT_ADDR)
#define VVIRT(x) (ADDR(x) - VVIRT_OFFSET)

  . = VSYSCALL_ADDR;
  .vsyscall_0 :	 AT(VSYSCALL_PHYS_ADDR) { *(.vsyscall_0) }
  __vsyscall_0 = VSYSCALL_VIRT_ADDR;

  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
  .xtime_lock : AT(VLOAD(.xtime_lock)) { *(.xtime_lock) }
  xtime_lock = VVIRT(.xtime_lock);

  .vxtime : AT(VLOAD(.vxtime)) { *(.vxtime) }
  vxtime = VVIRT(.vxtime);

  .wall_jiffies : AT(VLOAD(.wall_jiffies)) { *(.wall_jiffies) }
  wall_jiffies = VVIRT(.wall_jiffies);

  .sys_tz : AT(VLOAD(.sys_tz)) { *(.sys_tz) }
  sys_tz = VVIRT(.sys_tz);

  .sysctl_vsyscall : AT(VLOAD(.sysctl_vsyscall)) { *(.sysctl_vsyscall) }
  sysctl_vsyscall = VVIRT(.sysctl_vsyscall);

  .xtime : AT(VLOAD(.xtime)) { *(.xtime) }
  xtime = VVIRT(.xtime);

  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
  .jiffies : AT(VLOAD(.jiffies)) { *(.jiffies) }
  jiffies = VVIRT(.jiffies);

  .vsyscall_1 ADDR(.vsyscall_0) + 1024: AT(VLOAD(.vsyscall_1)) { *(.vsyscall_1) }
  .vsyscall_2 ADDR(.vsyscall_0) + 2048: AT(VLOAD(.vsyscall_2)) { *(.vsyscall_2) }
  .vsyscall_3 ADDR(.vsyscall_0) + 3072: AT(VLOAD(.vsyscall_3)) { *(.vsyscall_3) }

  . = VSYSCALL_VIRT_ADDR + 4096;

#undef VSYSCALL_ADDR
#undef VSYSCALL_PHYS_ADDR
#undef VSYSCALL_VIRT_ADDR
#undef VLOAD_OFFSET
#undef VLOAD
#undef VVIRT_OFFSET
#undef VVIRT

  . = ALIGN(8192);		/* init_task */
  .data.init_task : AT(ADDR(.data.init_task) - LOAD_OFFSET) {
	*(.data.init_task)
  }

  . = ALIGN(4096);
  .data.page_aligned : AT(ADDR(.data.page_aligned) - LOAD_OFFSET) {
	*(.data.page_aligned)
  }

  . = ALIGN(4096);		/* Init code and data */
  __init_begin = .;
  .init.text : AT(ADDR(.init.text) - LOAD_OFFSET) {
	_sinittext = .;
	*(.init.text)
	_einittext = .;
  }
  __initdata_begin = .;
  .init.data : AT(ADDR(.init.data) - LOAD_OFFSET) { *(.init.data) }
  __initdata_end = .;
  . = ALIGN(16);
  __setup_start = .;
  .init.setup : AT(ADDR(.init.setup) - LOAD_OFFSET) { *(.init.setup) }
  __setup_end = .;
  __initcall_start = .;
  .initcall.init : AT(ADDR(.initcall.init) - LOAD_OFFSET) {
	*(.initcall1.init) 
	*(.initcall2.init) 
	*(.initcall3.init) 
	*(.initcall4.init) 
	*(.initcall5.init) 
	*(.initcall6.init) 
	*(.initcall7.init)
  }
  __initcall_end = .;
  __con_initcall_start = .;
  .con_initcall.init : AT(ADDR(.con_initcall.init) - LOAD_OFFSET) {
	*(.con_initcall.init)
  }
  __con_initcall_end = .;
  SECURITY_INIT
  . = ALIGN(8);
  __alt_instructions = .;
  .altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
	*(.altinstructions)
  }
  __alt_instructions_end = .; 
  .altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
	*(.altinstr_replacement)
  }
  /* .exit.text is discard at runtime, not link time, to deal with references
     from .altinstructions and .eh_frame */
  .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) { *(.exit.text) }
  .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) { *(.exit.data) }
  . = ALIGN(4096);
  __initramfs_start = .;
  .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET) { *(.init.ramfs) }
  __initramfs_end = .;
  /* temporary here to work around NR_CPUS. If you see this comment in 2.6.17+
   complain */
  . = ALIGN(4096);	
  __init_end = .;	
  . = ALIGN(CONFIG_X86_L1_CACHE_BYTES);
  __per_cpu_start = .;
  .data.percpu  : AT(ADDR(.data.percpu) - LOAD_OFFSET) { *(.data.percpu) }
  __per_cpu_end = .;

  . = ALIGN(4096);
  __nosave_begin = .;
  .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) { *(.data.nosave) }
  . = ALIGN(4096);
  __nosave_end = .;

  _end = . ;

  /* Sections to be discarded */
  /DISCARD/ : {
	*(.exitcall.exit)
#ifndef CONFIG_UNWIND_INFO
	*(.eh_frame)
#endif
	}

  STABS_DEBUG

  DWARF_DEBUG
}