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_hello_world_begin[]; 26 extern char __efi_hello_world_end[]; 27 28 /* Start and end of .ctors section - used for constructor calls. */ 29 extern char __ctors_start[], __ctors_end[]; 30 31 /* .ARM.exidx is sorted, so has to go in its own output section. */ 32 extern char __exidx_start[], __exidx_end[]; 33 extern char __extab_start[], __extab_end[]; 34 35 /* function descriptor handling (if any). Override 36 * in asm/sections.h */ 37 #ifndef dereference_function_descriptor 38 #define dereference_function_descriptor(p) (p) 39 #endif 40 41 /* random extra sections (if any). Override 42 * in asm/sections.h */ 43 #ifndef arch_is_kernel_text 44 static inline int arch_is_kernel_text(unsigned long addr) 45 { 46 return 0; 47 } 48 #endif 49 50 #ifndef arch_is_kernel_data 51 static inline int arch_is_kernel_data(unsigned long addr) 52 { 53 return 0; 54 } 55 #endif 56 57 /* U-Boot-specific things begin here */ 58 59 /* Start of U-Boot text region */ 60 extern char __text_start[]; 61 62 /* This marks the end of the text region which must be relocated */ 63 extern char __image_copy_end[]; 64 65 /* 66 * This is the U-Boot entry point - prior to relocation it should be same 67 * as __text_start 68 */ 69 extern void _start(void); 70 71 /* 72 * ARM defines its symbols as char[]. Other arches define them as ulongs. 73 */ 74 #ifdef CONFIG_ARM 75 76 extern char __bss_start[]; 77 extern char __bss_end[]; 78 extern char __image_copy_start[]; 79 extern char __image_copy_end[]; 80 extern char _image_binary_end[]; 81 extern char __rel_dyn_start[]; 82 extern char __rel_dyn_end[]; 83 84 #else /* don't use offsets: */ 85 86 /* Exports from the Linker Script */ 87 extern ulong __data_end; 88 extern ulong __rel_dyn_start; 89 extern ulong __rel_dyn_end; 90 extern ulong __bss_end; 91 extern ulong _image_binary_end; 92 93 extern ulong _TEXT_BASE; /* code start */ 94 95 #endif 96 97 #endif /* _ASM_GENERIC_SECTIONS_H_ */ 98