include/asm-generic/sections.h

   1 /*
   2  * Copyright (c) 2011 The Chromium OS Authors.
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 /* Taken from Linux kernel, commit f56c3196 */
   8
   9 #ifndef _ASM_GENERIC_SECTIONS_H_
  10 #define _ASM_GENERIC_SECTIONS_H_
  11
  12 /* References to section boundaries */
  13
  14 extern char _text[], _stext[], _etext[];
  15 extern char _data[], _sdata[], _edata[];
  16 extern char __bss_start[], __bss_stop[];
  17 extern char __init_begin[], __init_end[];
  18 extern char _sinittext[], _einittext[];
  19 extern char _end[], _init[];
  20 extern char __per_cpu_load[], __per_cpu_start[], __per_cpu_end[];
  21 extern char __kprobes_text_start[], __kprobes_text_end[];
  22 extern char __entry_text_start[], __entry_text_end[];
  23 extern char __initdata_begin[], __initdata_end[];
  24 extern char __start_rodata[], __end_rodata[];
  25 extern char __efi_helloworld_begin[];
  26 extern char __efi_helloworld_end[];
  27
  28 /* Start and end of .ctors section - used for constructor calls. */
  29 extern char __ctors_start[], __ctors_end[];
  30
  31 /* function descriptor handling (if any).  Override
  32  * in asm/sections.h */
  33 #ifndef dereference_function_descriptor
  34 #define dereference_function_descriptor(p) (p)
  35 #endif
  36
  37 /* random extra sections (if any).  Override
  38  * in asm/sections.h */
  39 #ifndef arch_is_kernel_text
  40 static inline int arch_is_kernel_text(unsigned long addr)
  41 {
  42         return 0;
  43 }
  44 #endif
  45
  46 #ifndef arch_is_kernel_data
  47 static inline int arch_is_kernel_data(unsigned long addr)
  48 {
  49         return 0;
  50 }
  51 #endif
  52
  53 /* U-Boot-specific things begin here */
  54
  55 /* Start of U-Boot text region */
  56 extern char __text_start[];
  57
  58 /* This marks the end of the text region which must be relocated */
  59 extern char __image_copy_end[];
  60
  61 /*
  62  * This is the U-Boot entry point - prior to relocation it should be same
  63  * as __text_start
  64  */
  65 extern void _start(void);
  66
  67 /*
  68  * ARM defines its symbols as char[]. Other arches define them as ulongs.
  69  */
  70 #ifdef CONFIG_ARM
  71
  72 extern char __bss_start[];
  73 extern char __bss_end[];
  74 extern char __image_copy_start[];
  75 extern char __image_copy_end[];
  76 extern char _image_binary_end[];
  77 extern char __rel_dyn_start[];
  78 extern char __rel_dyn_end[];
  79
  80 #else /* don't use offsets: */
  81
  82 /* Exports from the Linker Script */
  83 extern ulong __data_end;
  84 extern ulong __rel_dyn_start;
  85 extern ulong __rel_dyn_end;
  86 extern ulong __bss_end;
  87 extern ulong _image_binary_end;
  88
  89 extern ulong _TEXT_BASE;        /* code start */
  90
  91 #endif
  92
  93 #endif /* _ASM_GENERIC_SECTIONS_H_ */