Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright 2010 Tilera Corporation. All Rights Reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation, version 2.
7 *
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 * NON INFRINGEMENT. See the GNU General Public License for
12 * more details.
13 */
14
15#ifndef _ASM_TILE_SECTIONS_H
16#define _ASM_TILE_SECTIONS_H
17
18#define arch_is_kernel_data arch_is_kernel_data
19
20#include <asm-generic/sections.h>
21
22/* Text and data are at different areas in the kernel VA space. */
23extern char _sinitdata[], _einitdata[];
24
25/* Write-once data is writable only till the end of initialization. */
26extern char __w1data_begin[], __w1data_end[];
27
28extern char vdso_start[], vdso_end[];
29#ifdef CONFIG_COMPAT
30extern char vdso32_start[], vdso32_end[];
31#endif
32
33/* Not exactly sections, but PC comparison points in the code. */
34extern char __rt_sigreturn[], __rt_sigreturn_end[];
35#ifdef __tilegx__
36extern char __start_unalign_asm_code[], __end_unalign_asm_code[];
37#else
38extern char sys_cmpxchg[], __sys_cmpxchg_end[];
39extern char __sys_cmpxchg_grab_lock[];
40extern char __start_atomic_asm_code[], __end_atomic_asm_code[];
41#endif
42
43/* Handle the discontiguity between _sdata and _text. */
44static inline int arch_is_kernel_data(unsigned long addr)
45{
46 return addr >= (unsigned long)_sdata &&
47 addr < (unsigned long)_end;
48}
49
50#endif /* _ASM_TILE_SECTIONS_H */