diff options
Diffstat (limited to 'kernel/include/asm-generic/sections.h')
| -rw-r--r-- | kernel/include/asm-generic/sections.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/kernel/include/asm-generic/sections.h b/kernel/include/asm-generic/sections.h new file mode 100644 index 000000000..b58fd667f --- /dev/null +++ b/kernel/include/asm-generic/sections.h @@ -0,0 +1,66 @@ +#ifndef _ASM_GENERIC_SECTIONS_H_ +#define _ASM_GENERIC_SECTIONS_H_ + +/* References to section boundaries */ + +#include <linux/compiler.h> + +/* + * Usage guidelines: + * _text, _data: architecture specific, don't use them in arch-independent code + * [_stext, _etext]: contains .text.* sections, may also contain .rodata.* + * and/or .init.* sections + * [_sdata, _edata]: contains .data.* sections, may also contain .rodata.* + * and/or .init.* sections. + * [__start_rodata, __end_rodata]: contains .rodata.* sections + * [__init_begin, __init_end]: contains .init.* sections, but .init.text.* + * may be out of this range on some architectures. + * [_sinittext, _einittext]: contains .init.text.* sections + * [__bss_start, __bss_stop]: contains BSS sections + * + * Following global variables are optional and may be unavailable on some + * architectures and/or kernel configurations. + * _text, _data + * __kprobes_text_start, __kprobes_text_end + * __entry_text_start, __entry_text_end + * __ctors_start, __ctors_end + */ +extern char _text[], _stext[], _etext[]; +extern char _data[], _sdata[], _edata[]; +extern char __bss_start[], __bss_stop[]; +extern char __init_begin[], __init_end[]; +extern char _sinittext[], _einittext[]; +extern char _end[]; +extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[]; +extern char __kprobes_text_start[], __kprobes_text_end[]; +extern char __entry_text_start[], __entry_text_end[]; +extern char __start_rodata[], __end_rodata[]; + +/* Start and end of .ctors section - used for constructor calls. */ +extern char __ctors_start[], __ctors_end[]; + +extern __visible const void __nosave_begin, __nosave_end; + +/* function descriptor handling (if any). Override + * in asm/sections.h */ +#ifndef dereference_function_descriptor +#define dereference_function_descriptor(p) (p) +#endif + +/* random extra sections (if any). Override + * in asm/sections.h */ +#ifndef arch_is_kernel_text +static inline int arch_is_kernel_text(unsigned long addr) +{ + return 0; +} +#endif + +#ifndef arch_is_kernel_data +static inline int arch_is_kernel_data(unsigned long addr) +{ + return 0; +} +#endif + +#endif /* _ASM_GENERIC_SECTIONS_H_ */ |