2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
37 #define get_cpu_var(p) (p)
38 #define __get_cpu_var(p) (p)
39 #define BITS_PER_LONG (sizeof(long) * 8)
40 #define __GFP_BITS_SHIFT 20
41 #define __GFP_BITS_MASK ((int)((1 << __GFP_BITS_SHIFT) - 1))
45 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
48 #define ULONG_MAX (~0UL)
53 #define __force __attribute__((force))
54 #define __bitwise__ __attribute__((bitwise))
62 * Since we're using primitive definitions from kernel-space, we need to
63 * define __KERNEL__ so that system header files know which definitions
67 #include <asm/types.h>
73 * Continuing to define __KERNEL__ breaks others parts of the code, so
74 * we can just undefine it now that we have the correct headers...
78 typedef unsigned int u32;
79 typedef unsigned int __u32;
80 typedef unsigned long long u64;
81 typedef unsigned char u8;
82 typedef unsigned short u16;
86 struct vma_shared { int prio_tree_node; };
87 struct vm_area_struct {
88 unsigned long vm_pgoff;
89 unsigned long vm_start;
91 struct vma_shared shared;
102 #define mutex_init(m) \
107 static inline void mutex_lock(struct mutex *m)
112 static inline void mutex_unlock(struct mutex *m)
117 static inline int mutex_is_locked(struct mutex *m)
119 return (m->lock != 1);
122 #define cond_resched() do { } while (0)
123 #define preempt_enable() do { } while (0)
124 #define preempt_disable() do { } while (0)
126 #define BITOP_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
127 #define BITOP_WORD(nr) ((nr) / BITS_PER_LONG)
130 * __set_bit - Set a bit in memory
131 * @nr: the bit to set
132 * @addr: the address to start counting from
134 * Unlike set_bit(), this function is non-atomic and may be reordered.
135 * If it's called on the same region of memory simultaneously, the effect
136 * may be that only one operation succeeds.
138 static inline void __set_bit(int nr, volatile unsigned long *addr)
140 unsigned long mask = BITOP_MASK(nr);
141 unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
146 static inline void __clear_bit(int nr, volatile unsigned long *addr)
148 unsigned long mask = BITOP_MASK(nr);
149 unsigned long *p = ((unsigned long *)addr) + BITOP_WORD(nr);
155 * test_bit - Determine whether a bit is set
156 * @nr: bit number to test
157 * @addr: Address to start counting from
159 static inline int test_bit(int nr, const volatile unsigned long *addr)
161 return 1UL & (addr[BITOP_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
167 #define MAX_ERRNO 4095
168 #define IS_ERR_VALUE(x) ((x) >= (unsigned long)-MAX_ERRNO)
170 static inline void *ERR_PTR(long error)
172 return (void *) error;
175 static inline long PTR_ERR(const void *ptr)
180 static inline long IS_ERR(const void *ptr)
182 return IS_ERR_VALUE((unsigned long)ptr);
188 #define min(x,y) ({ \
189 typeof(x) _x = (x); \
190 typeof(y) _y = (y); \
191 (void) (&_x == &_y); \
192 _x < _y ? _x : _y; })
194 #define max(x,y) ({ \
195 typeof(x) _x = (x); \
196 typeof(y) _y = (y); \
197 (void) (&_x == &_y); \
198 _x > _y ? _x : _y; })
200 #define min_t(type,x,y) \
201 ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
202 #define max_t(type,x,y) \
203 ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
206 * This looks more complex than it should be. But we need to
207 * get the type for the ~ right in round_down (it needs to be
208 * as wide as the result!), and we want to evaluate the macro
209 * arguments just once each.
211 #define __round_mask(x, y) ((__typeof__(x))((y)-1))
212 #define round_up(x, y) ((((x)-1) | __round_mask(x, y))+1)
213 #define round_down(x, y) ((x) & ~__round_mask(x, y))
218 #define printk(fmt, args...) fprintf(stderr, fmt, ##args)
225 #define kmalloc(x, y) malloc(x)
226 #define kzalloc(x, y) calloc(1, x)
227 #define kstrdup(x, y) strdup(x)
228 #define kfree(x) free(x)
230 #define BUG_ON(c) assert(!(c))
231 #define WARN_ON(c) assert(!(c))
234 #ifdef __compiler_offsetof
235 #define offsetof(TYPE,MEMBER) __compiler_offsetof(TYPE,MEMBER)
237 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
240 #define container_of(ptr, type, member) ({ \
241 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
242 (type *)( (char *)__mptr - offsetof(type,member) );})
244 #define __CHECK_ENDIAN__
245 #define __bitwise __bitwise__
250 typedef u16 __bitwise __le16;
251 typedef u16 __bitwise __be16;
252 typedef u32 __bitwise __le32;
253 typedef u32 __bitwise __be32;
254 typedef u64 __bitwise __le64;
255 typedef u64 __bitwise __be64;
257 /* Macros to generate set/get funcs for the struct fields
258 * assume there is a lefoo_to_cpu for every type, so lets make a simple
261 #define le8_to_cpu(v) (v)
262 #define cpu_to_le8(v) (v)
265 #if __BYTE_ORDER == __BIG_ENDIAN
266 #define cpu_to_le64(x) ((__force __le64)(u64)(bswap_64(x)))
267 #define le64_to_cpu(x) ((__force u64)(__le64)(bswap_64(x)))
268 #define cpu_to_le32(x) ((__force __le32)(u32)(bswap_32(x)))
269 #define le32_to_cpu(x) ((__force u32)(__le32)(bswap_32(x)))
270 #define cpu_to_le16(x) ((__force __le16)(u16)(bswap_16(x)))
271 #define le16_to_cpu(x) ((__force u16)(__le16)(bswap_16(x)))
273 #define cpu_to_le64(x) ((__force __le64)(u64)(x))
274 #define le64_to_cpu(x) ((__force u64)(__le64)(x))
275 #define cpu_to_le32(x) ((__force __le32)(u32)(x))
276 #define le32_to_cpu(x) ((__force u32)(__le32)(x))
277 #define cpu_to_le16(x) ((__force __le16)(u16)(x))
278 #define le16_to_cpu(x) ((__force u16)(__le16)(x))
281 struct __una_u16 { u16 x; } __attribute__((__packed__));
282 struct __una_u32 { u32 x; } __attribute__((__packed__));
283 struct __una_u64 { u64 x; } __attribute__((__packed__));
285 #define get_unaligned_le8(p) (*((u8 *)(p)))
286 #define put_unaligned_le8(val,p) ((*((u8 *)(p))) = (val))
287 #define get_unaligned_le16(p) le16_to_cpu(((const struct __una_u16 *)(p))->x)
288 #define put_unaligned_le16(val,p) (((struct __una_u16 *)(p))->x = cpu_to_le16(val))
289 #define get_unaligned_le32(p) le32_to_cpu(((const struct __una_u32 *)(p))->x)
290 #define put_unaligned_le32(val,p) (((struct __una_u32 *)(p))->x = cpu_to_le32(val))
291 #define get_unaligned_le64(p) le64_to_cpu(((const struct __una_u64 *)(p))->x)
292 #define put_unaligned_le64(val,p) (((struct __una_u64 *)(p))->x = cpu_to_le64(val))