1 #ifndef _ASM_GENERIC_SECTIONS_H_ 2 #define _ASM_GENERIC_SECTIONS_H_ 3 4 /* References to section boundaries */ 5 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 */ 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[]; 32 extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[]; 33 extern char __kprobes_text_start[], __kprobes_text_end[]; 34 extern char __entry_text_start[], __entry_text_end[]; 35 extern char __start_rodata[], __end_rodata[]; 36 37 /* Start and end of .ctors section - used for constructor calls. */ 38 extern char __ctors_start[], __ctors_end[]; 39 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 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 62 #endif /* _ASM_GENERIC_SECTIONS_H_ */ 63