1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* Copyright (c) 2011 The Chromium OS Authors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/* Taken from Linux kernel, commit f56c3196 */
#ifndef _ASM_GENERIC_SECTIONS_H_
#define _ASM_GENERIC_SECTIONS_H_
/* References to section boundaries */
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[], _init[];
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 __initdata_begin[], __initdata_end[];
extern char __start_rodata[], __end_rodata[];
/* Start and end of .ctors section - used for constructor calls. */
extern char __ctors_start[], __ctors_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
/* U-Boot-specific things begin here */
/* Start of U-Boot text region */
extern char __text_start[];
/* This marks the end of the text region which must be relocated */
extern char __image_copy_end[];
/*
* This is the U-Boot entry point - prior to relocation it should be same
* as __text_start
*/
extern void _start(void);
/*
* ARM needs to use offsets for symbols, since the values of some symbols
* are not resolved prior to relocation (and are just 0). Maybe this can be
* resolved, or maybe other architectures are similar, iwc this should be
* promoted to an architecture option.
*/
#ifdef CONFIG_ARM
#define CONFIG_SYS_SYM_OFFSETS
#endif
#ifdef CONFIG_SYS_SYM_OFFSETS
/* Start/end of the relocation entries, as an offset from _start */
extern ulong _rel_dyn_start_ofs;
extern ulong _rel_dyn_end_ofs;
/* End of the region to be relocated, as an offset form _start */
extern ulong _image_copy_end_ofs;
extern ulong _bss_start_ofs; /* BSS start relative to _start */
extern ulong _bss_end_ofs; /* BSS end relative to _start */
extern ulong _end_ofs; /* end of image relative to _start */
extern ulong _TEXT_BASE; /* code start */
#else /* don't use offsets: */
/* Exports from the Linker Script */
extern ulong __data_end;
extern ulong __rel_dyn_start;
extern ulong __rel_dyn_end;
extern ulong __bss_end;
extern ulong _TEXT_BASE; /* code start */
#endif
#endif /* _ASM_GENERIC_SECTIONS_H_ */
|
