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1da177e4 LT |
1 | #ifndef _ASM_GENERIC_SECTIONS_H_ |
2 | #define _ASM_GENERIC_SECTIONS_H_ | |
3 | ||
4 | /* References to section boundaries */ | |
5 | ||
1622d1ab JL |
6 | /* |
7 | * Usage guidelines: | |
8 | * _text, _data: architecture specific, don't use them in arch-independent code | |
9 | * [_stext, _etext]: contains .text.* sections, may also contain .rodata.* | |
10 | * and/or .init.* sections | |
11 | * [_sdata, _edata]: contains .data.* sections, may also contain .rodata.* | |
12 | * and/or .init.* sections. | |
13 | * [__start_rodata, __end_rodata]: contains .rodata.* sections | |
14 | * [__init_begin, __init_end]: contains .init.* sections, but .init.text.* | |
15 | * may be out of this range on some architectures. | |
16 | * [_sinittext, _einittext]: contains .init.text.* sections | |
17 | * [__bss_start, __bss_stop]: contains BSS sections | |
18 | * | |
19 | * Following global variables are optional and may be unavailable on some | |
20 | * architectures and/or kernel configurations. | |
21 | * _text, _data | |
22 | * __kprobes_text_start, __kprobes_text_end | |
23 | * __entry_text_start, __entry_text_end | |
24 | * __ctors_start, __ctors_end | |
25 | */ | |
1da177e4 LT |
26 | extern char _text[], _stext[], _etext[]; |
27 | extern char _data[], _sdata[], _edata[]; | |
28 | extern char __bss_start[], __bss_stop[]; | |
29 | extern char __init_begin[], __init_end[]; | |
30 | extern char _sinittext[], _einittext[]; | |
31 | extern char _end[]; | |
3e5d8f97 | 32 | extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[]; |
d0aaff97 | 33 | extern char __kprobes_text_start[], __kprobes_text_end[]; |
ea714547 | 34 | extern char __entry_text_start[], __entry_text_end[]; |
a581c2a4 | 35 | extern char __start_rodata[], __end_rodata[]; |
1da177e4 | 36 | |
b99b87f7 PO |
37 | /* Start and end of .ctors section - used for constructor calls. */ |
38 | extern char __ctors_start[], __ctors_end[]; | |
39 | ||
deac93df JB |
40 | /* function descriptor handling (if any). Override |
41 | * in asm/sections.h */ | |
42 | #ifndef dereference_function_descriptor | |
43 | #define dereference_function_descriptor(p) (p) | |
44 | #endif | |
45 | ||
00afe029 MF |
46 | /* random extra sections (if any). Override |
47 | * in asm/sections.h */ | |
48 | #ifndef arch_is_kernel_text | |
49 | static inline int arch_is_kernel_text(unsigned long addr) | |
50 | { | |
51 | return 0; | |
52 | } | |
53 | #endif | |
54 | ||
55 | #ifndef arch_is_kernel_data | |
56 | static inline int arch_is_kernel_data(unsigned long addr) | |
57 | { | |
58 | return 0; | |
59 | } | |
60 | #endif | |
61 | ||
1da177e4 | 62 | #endif /* _ASM_GENERIC_SECTIONS_H_ */ |