projects/linux·blob 61844250 · refs

354 lines · 11.0 KiB

1#ifndef LOAD_OFFSET
2#define LOAD_OFFSET 0
3#endif
4
5#ifndef VMLINUX_SYMBOL
6#define VMLINUX_SYMBOL(_sym_) _sym_
7#endif
8
9/* Align . to a 8 byte boundary equals to maximum function alignment. */
10#define ALIGN_FUNCTION() . = ALIGN(8)
11
12/* The actual configuration determine if the init/exit sections
13 * are handled as text/data or they can be discarded (which
14 * often happens at runtime)
15 */
16#ifdef CONFIG_HOTPLUG
17#define DEV_KEEP(sec) *(.dev##sec)
18#define DEV_DISCARD(sec)
19#else
20#define DEV_KEEP(sec)
21#define DEV_DISCARD(sec) *(.dev##sec)
22#endif
23
24#ifdef CONFIG_HOTPLUG_CPU
25#define CPU_KEEP(sec) *(.cpu##sec)
26#define CPU_DISCARD(sec)
27#else
28#define CPU_KEEP(sec)
29#define CPU_DISCARD(sec) *(.cpu##sec)
30#endif
31
32#if defined(CONFIG_MEMORY_HOTPLUG)
33#define MEM_KEEP(sec) *(.mem##sec)
34#define MEM_DISCARD(sec)
35#else
36#define MEM_KEEP(sec)
37#define MEM_DISCARD(sec) *(.mem##sec)
38#endif
39
40
41/* .data section */
42#define DATA_DATA \
43 *(.data) \
44 *(.data.init.refok) \
45 *(.ref.data) \
46 DEV_KEEP(init.data) \
47 DEV_KEEP(exit.data) \
48 CPU_KEEP(init.data) \
49 CPU_KEEP(exit.data) \
50 MEM_KEEP(init.data) \
51 MEM_KEEP(exit.data) \
52 . = ALIGN(8); \
53 VMLINUX_SYMBOL(__start___markers) = .; \
54 *(__markers) \
55 VMLINUX_SYMBOL(__stop___markers) = .;
56
57#define RO_DATA(align) \
58 . = ALIGN((align)); \
59 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
60 VMLINUX_SYMBOL(__start_rodata) = .; \
61 *(.rodata) *(.rodata.*) \
62 *(__vermagic) /* Kernel version magic */ \
63 *(__markers_strings) /* Markers: strings */ \
64 } \
65 \
66 .rodata1 : AT(ADDR(.rodata1) - LOAD_OFFSET) { \
67 *(.rodata1) \
68 } \
69 \
70 /* PCI quirks */ \
71 .pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
72 VMLINUX_SYMBOL(__start_pci_fixups_early) = .; \
73 *(.pci_fixup_early) \
74 VMLINUX_SYMBOL(__end_pci_fixups_early) = .; \
75 VMLINUX_SYMBOL(__start_pci_fixups_header) = .; \
76 *(.pci_fixup_header) \
77 VMLINUX_SYMBOL(__end_pci_fixups_header) = .; \
78 VMLINUX_SYMBOL(__start_pci_fixups_final) = .; \
79 *(.pci_fixup_final) \
80 VMLINUX_SYMBOL(__end_pci_fixups_final) = .; \
81 VMLINUX_SYMBOL(__start_pci_fixups_enable) = .; \
82 *(.pci_fixup_enable) \
83 VMLINUX_SYMBOL(__end_pci_fixups_enable) = .; \
84 VMLINUX_SYMBOL(__start_pci_fixups_resume) = .; \
85 *(.pci_fixup_resume) \
86 VMLINUX_SYMBOL(__end_pci_fixups_resume) = .; \
87 } \
88 \
89 /* RapidIO route ops */ \
90 .rio_route : AT(ADDR(.rio_route) - LOAD_OFFSET) { \
91 VMLINUX_SYMBOL(__start_rio_route_ops) = .; \
92 *(.rio_route_ops) \
93 VMLINUX_SYMBOL(__end_rio_route_ops) = .; \
94 } \
95 \
96 /* Kernel symbol table: Normal symbols */ \
97 __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \
98 VMLINUX_SYMBOL(__start___ksymtab) = .; \
99 *(__ksymtab) \
100 VMLINUX_SYMBOL(__stop___ksymtab) = .; \
101 } \
102 \
103 /* Kernel symbol table: GPL-only symbols */ \
104 __ksymtab_gpl : AT(ADDR(__ksymtab_gpl) - LOAD_OFFSET) { \
105 VMLINUX_SYMBOL(__start___ksymtab_gpl) = .; \
106 *(__ksymtab_gpl) \
107 VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \
108 } \
109 \
110 /* Kernel symbol table: Normal unused symbols */ \
111 __ksymtab_unused : AT(ADDR(__ksymtab_unused) - LOAD_OFFSET) { \
112 VMLINUX_SYMBOL(__start___ksymtab_unused) = .; \
113 *(__ksymtab_unused) \
114 VMLINUX_SYMBOL(__stop___ksymtab_unused) = .; \
115 } \
116 \
117 /* Kernel symbol table: GPL-only unused symbols */ \
118 __ksymtab_unused_gpl : AT(ADDR(__ksymtab_unused_gpl) - LOAD_OFFSET) { \
119 VMLINUX_SYMBOL(__start___ksymtab_unused_gpl) = .; \
120 *(__ksymtab_unused_gpl) \
121 VMLINUX_SYMBOL(__stop___ksymtab_unused_gpl) = .; \
122 } \
123 \
124 /* Kernel symbol table: GPL-future-only symbols */ \
125 __ksymtab_gpl_future : AT(ADDR(__ksymtab_gpl_future) - LOAD_OFFSET) { \
126 VMLINUX_SYMBOL(__start___ksymtab_gpl_future) = .; \
127 *(__ksymtab_gpl_future) \
128 VMLINUX_SYMBOL(__stop___ksymtab_gpl_future) = .; \
129 } \
130 \
131 /* Kernel symbol table: Normal symbols */ \
132 __kcrctab : AT(ADDR(__kcrctab) - LOAD_OFFSET) { \
133 VMLINUX_SYMBOL(__start___kcrctab) = .; \
134 *(__kcrctab) \
135 VMLINUX_SYMBOL(__stop___kcrctab) = .; \
136 } \
137 \
138 /* Kernel symbol table: GPL-only symbols */ \
139 __kcrctab_gpl : AT(ADDR(__kcrctab_gpl) - LOAD_OFFSET) { \
140 VMLINUX_SYMBOL(__start___kcrctab_gpl) = .; \
141 *(__kcrctab_gpl) \
142 VMLINUX_SYMBOL(__stop___kcrctab_gpl) = .; \
143 } \
144 \
145 /* Kernel symbol table: Normal unused symbols */ \
146 __kcrctab_unused : AT(ADDR(__kcrctab_unused) - LOAD_OFFSET) { \
147 VMLINUX_SYMBOL(__start___kcrctab_unused) = .; \
148 *(__kcrctab_unused) \
149 VMLINUX_SYMBOL(__stop___kcrctab_unused) = .; \
150 } \
151 \
152 /* Kernel symbol table: GPL-only unused symbols */ \
153 __kcrctab_unused_gpl : AT(ADDR(__kcrctab_unused_gpl) - LOAD_OFFSET) { \
154 VMLINUX_SYMBOL(__start___kcrctab_unused_gpl) = .; \
155 *(__kcrctab_unused_gpl) \
156 VMLINUX_SYMBOL(__stop___kcrctab_unused_gpl) = .; \
157 } \
158 \
159 /* Kernel symbol table: GPL-future-only symbols */ \
160 __kcrctab_gpl_future : AT(ADDR(__kcrctab_gpl_future) - LOAD_OFFSET) { \
161 VMLINUX_SYMBOL(__start___kcrctab_gpl_future) = .; \
162 *(__kcrctab_gpl_future) \
163 VMLINUX_SYMBOL(__stop___kcrctab_gpl_future) = .; \
164 } \
165 \
166 /* Kernel symbol table: strings */ \
167 __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \
168 *(__ksymtab_strings) \
169 } \
170 \
171 /* __*init sections */ \
172 __init_rodata : AT(ADDR(__init_rodata) - LOAD_OFFSET) { \
173 *(.ref.rodata) \
174 DEV_KEEP(init.rodata) \
175 DEV_KEEP(exit.rodata) \
176 CPU_KEEP(init.rodata) \
177 CPU_KEEP(exit.rodata) \
178 MEM_KEEP(init.rodata) \
179 MEM_KEEP(exit.rodata) \
180 } \
181 \
182 /* Built-in module parameters. */ \
183 __param : AT(ADDR(__param) - LOAD_OFFSET) { \
184 VMLINUX_SYMBOL(__start___param) = .; \
185 *(__param) \
186 VMLINUX_SYMBOL(__stop___param) = .; \
187 . = ALIGN((align)); \
188 VMLINUX_SYMBOL(__end_rodata) = .; \
189 } \
190 . = ALIGN((align));
191
192/* RODATA provided for backward compatibility.
193 * All archs are supposed to use RO_DATA() */
194#define RODATA RO_DATA(4096)
195
196#define SECURITY_INIT \
197 .security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
198 VMLINUX_SYMBOL(__security_initcall_start) = .; \
199 *(.security_initcall.init) \
200 VMLINUX_SYMBOL(__security_initcall_end) = .; \
201 }
202
203/* .text section. Map to function alignment to avoid address changes
204 * during second ld run in second ld pass when generating System.map */
205#define TEXT_TEXT \
206 ALIGN_FUNCTION(); \
207 *(.text) \
208 *(.ref.text) \
209 *(.text.init.refok) \
210 *(.exit.text.refok) \
211 DEV_KEEP(init.text) \
212 DEV_KEEP(exit.text) \
213 CPU_KEEP(init.text) \
214 CPU_KEEP(exit.text) \
215 MEM_KEEP(init.text) \
216 MEM_KEEP(exit.text)
217
218
219/* sched.text is aling to function alignment to secure we have same
220 * address even at second ld pass when generating System.map */
221#define SCHED_TEXT \
222 ALIGN_FUNCTION(); \
223 VMLINUX_SYMBOL(__sched_text_start) = .; \
224 *(.sched.text) \
225 VMLINUX_SYMBOL(__sched_text_end) = .;
226
227/* spinlock.text is aling to function alignment to secure we have same
228 * address even at second ld pass when generating System.map */
229#define LOCK_TEXT \
230 ALIGN_FUNCTION(); \
231 VMLINUX_SYMBOL(__lock_text_start) = .; \
232 *(.spinlock.text) \
233 VMLINUX_SYMBOL(__lock_text_end) = .;
234
235#define KPROBES_TEXT \
236 ALIGN_FUNCTION(); \
237 VMLINUX_SYMBOL(__kprobes_text_start) = .; \
238 *(.kprobes.text) \
239 VMLINUX_SYMBOL(__kprobes_text_end) = .;
240
241/* Section used for early init (in .S files) */
242#define HEAD_TEXT *(.head.text)
243
244/* init and exit section handling */
245#define INIT_DATA \
246 *(.init.data) \
247 DEV_DISCARD(init.data) \
248 DEV_DISCARD(init.rodata) \
249 CPU_DISCARD(init.data) \
250 CPU_DISCARD(init.rodata) \
251 MEM_DISCARD(init.data) \
252 MEM_DISCARD(init.rodata)
253
254#define INIT_TEXT \
255 *(.init.text) \
256 DEV_DISCARD(init.text) \
257 CPU_DISCARD(init.text) \
258 MEM_DISCARD(init.text)
259
260#define EXIT_DATA \
261 *(.exit.data) \
262 DEV_DISCARD(exit.data) \
263 DEV_DISCARD(exit.rodata) \
264 CPU_DISCARD(exit.data) \
265 CPU_DISCARD(exit.rodata) \
266 MEM_DISCARD(exit.data) \
267 MEM_DISCARD(exit.rodata)
268
269#define EXIT_TEXT \
270 *(.exit.text) \
271 DEV_DISCARD(exit.text) \
272 CPU_DISCARD(exit.text) \
273 MEM_DISCARD(exit.text)
274
275 /* DWARF debug sections.
276 Symbols in the DWARF debugging sections are relative to
277 the beginning of the section so we begin them at 0. */
278#define DWARF_DEBUG \
279 /* DWARF 1 */ \
280 .debug 0 : { *(.debug) } \
281 .line 0 : { *(.line) } \
282 /* GNU DWARF 1 extensions */ \
283 .debug_srcinfo 0 : { *(.debug_srcinfo) } \
284 .debug_sfnames 0 : { *(.debug_sfnames) } \
285 /* DWARF 1.1 and DWARF 2 */ \
286 .debug_aranges 0 : { *(.debug_aranges) } \
287 .debug_pubnames 0 : { *(.debug_pubnames) } \
288 /* DWARF 2 */ \
289 .debug_info 0 : { *(.debug_info \
290 .gnu.linkonce.wi.*) } \
291 .debug_abbrev 0 : { *(.debug_abbrev) } \
292 .debug_line 0 : { *(.debug_line) } \
293 .debug_frame 0 : { *(.debug_frame) } \
294 .debug_str 0 : { *(.debug_str) } \
295 .debug_loc 0 : { *(.debug_loc) } \
296 .debug_macinfo 0 : { *(.debug_macinfo) } \
297 /* SGI/MIPS DWARF 2 extensions */ \
298 .debug_weaknames 0 : { *(.debug_weaknames) } \
299 .debug_funcnames 0 : { *(.debug_funcnames) } \
300 .debug_typenames 0 : { *(.debug_typenames) } \
301 .debug_varnames 0 : { *(.debug_varnames) } \
302
303 /* Stabs debugging sections. */
304#define STABS_DEBUG \
305 .stab 0 : { *(.stab) } \
306 .stabstr 0 : { *(.stabstr) } \
307 .stab.excl 0 : { *(.stab.excl) } \
308 .stab.exclstr 0 : { *(.stab.exclstr) } \
309 .stab.index 0 : { *(.stab.index) } \
310 .stab.indexstr 0 : { *(.stab.indexstr) } \
311 .comment 0 : { *(.comment) }
312
313#define BUG_TABLE \
314 . = ALIGN(8); \
315 __bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
316 __start___bug_table = .; \
317 *(__bug_table) \
318 __stop___bug_table = .; \
319 }
320
321#define NOTES \
322 .notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
323 VMLINUX_SYMBOL(__start_notes) = .; \
324 *(.note.*) \
325 VMLINUX_SYMBOL(__stop_notes) = .; \
326 }
327
328#define INITCALLS \
329 *(.initcall0.init) \
330 *(.initcall0s.init) \
331 *(.initcall1.init) \
332 *(.initcall1s.init) \
333 *(.initcall2.init) \
334 *(.initcall2s.init) \
335 *(.initcall3.init) \
336 *(.initcall3s.init) \
337 *(.initcall4.init) \
338 *(.initcall4s.init) \
339 *(.initcall5.init) \
340 *(.initcall5s.init) \
341 *(.initcallrootfs.init) \
342 *(.initcall6.init) \
343 *(.initcall6s.init) \
344 *(.initcall7.init) \
345 *(.initcall7s.init)
346
347#define PERCPU(align) \
348 . = ALIGN(align); \
349 __per_cpu_start = .; \
350 .data.percpu : AT(ADDR(.data.percpu) - LOAD_OFFSET) { \
351 *(.data.percpu) \
352 *(.data.percpu.shared_aligned) \
353 } \
354 __per_cpu_end = .;