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 28 29/* Not exactly sections, but PC comparison points in the code. */ 30extern char __rt_sigreturn[], __rt_sigreturn_end[]; 31#ifndef __tilegx__ 32extern char sys_cmpxchg[], __sys_cmpxchg_end[]; 33extern char __sys_cmpxchg_grab_lock[]; 34extern char __start_atomic_asm_code[], __end_atomic_asm_code[]; 35#endif 36 37/* Handle the discontiguity between _sdata and _stext. */ 38static inline int arch_is_kernel_data(unsigned long addr) 39{ 40 return addr >= (unsigned long)_sdata && 41 addr < (unsigned long)_end; 42} 43 44#endif /* _ASM_TILE_SECTIONS_H */ 45