| 1 | #ifndef KERNELCOMPAT_H |
| 2 | #define KERNELCOMPAT_H |
| 3 | |
| 4 | #include "compiler.h" |
| 5 | |
| 6 | #include <string.h> |
| 7 | |
| 8 | #define container_of(ptr, type, member) ({ \ |
| 9 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ |
| 10 | (type *)( (char *)__mptr - offsetof(type,member) );}) |
| 11 | |
| 12 | #define KERN_DEBUG "" |
| 13 | #define KERN_NOTICE "" |
| 14 | #define KERN_INFO "" |
| 15 | #define KERN_ERR "" |
| 16 | #define KERN_ALERT "" |
| 17 | |
| 18 | /* ERROR OPS */ |
| 19 | |
| 20 | #define MAX_ERRNO 4095 |
| 21 | |
| 22 | #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO) |
| 23 | |
| 24 | static inline void *ERR_PTR(long error) |
| 25 | { |
| 26 | return (void *) error; |
| 27 | } |
| 28 | |
| 29 | static inline long PTR_ERR(const void *ptr) |
| 30 | { |
| 31 | return (long) ptr; |
| 32 | } |
| 33 | |
| 34 | static inline long IS_ERR(const void *ptr) |
| 35 | { |
| 36 | return IS_ERR_VALUE((unsigned long)ptr); |
| 37 | } |
| 38 | |
| 39 | |
| 40 | /* FIXED SIZE INTEGERS */ |
| 41 | |
| 42 | #include <stdint.h> |
| 43 | |
| 44 | typedef uint8_t u8; |
| 45 | typedef uint16_t u16; |
| 46 | typedef uint32_t u32; |
| 47 | typedef uint64_t u64; |
| 48 | |
| 49 | #define min_t(type, x, y) ({ \ |
| 50 | type __min1 = (x); \ |
| 51 | type __min2 = (y); \ |
| 52 | __min1 < __min2 ? __min1: __min2; }) |
| 53 | |
| 54 | #define max_t(type, x, y) ({ \ |
| 55 | type __max1 = (x); \ |
| 56 | type __max2 = (y); \ |
| 57 | __max1 > __max2 ? __max1: __max2; }) |
| 58 | |
| 59 | |
| 60 | /* MUTEXES */ |
| 61 | |
| 62 | #include <pthread.h> |
| 63 | |
| 64 | #define DEFINE_MUTEX(m) pthread_mutex_t (m) = PTHREAD_MUTEX_INITIALIZER; |
| 65 | |
| 66 | #define mutex_lock(m) pthread_mutex_lock(m) |
| 67 | |
| 68 | #define mutex_unlock(m) pthread_mutex_unlock(m) |
| 69 | |
| 70 | /* MALLOCATION */ |
| 71 | |
| 72 | #include <stdlib.h> |
| 73 | |
| 74 | #define kmalloc(s, t) malloc(s) |
| 75 | #define kzalloc(s, t) malloc(s) |
| 76 | #define kfree(p) free((void *)p) |
| 77 | #define kstrdup(s, t) strdup(s) |
| 78 | |
| 79 | /* PRINTK */ |
| 80 | |
| 81 | #include <stdio.h> |
| 82 | #define printk(fmt, args...) printf(fmt, ## args) |
| 83 | |
| 84 | /* MEMORY BARRIERS */ |
| 85 | |
| 86 | #define smp_rmb() do {} while(0) |
| 87 | #define smp_wmb() do {} while(0) |
| 88 | #define smp_mb() do {} while(0) |
| 89 | #define smp_mb__after_atomic_inc() do {} while(0) |
| 90 | |
| 91 | #define read_barrier_depends() do {} while(0) |
| 92 | #define smp_read_barrier_depends() do {} while(0) |
| 93 | |
| 94 | /* RCU */ |
| 95 | |
| 96 | #define rcu_assign_pointer(a, b) do {} while(0) |
| 97 | #define call_rcu_sched(a,b) do {} while(0) |
| 98 | #define rcu_barrier_sched() do {} while(0) |
| 99 | |
| 100 | /* ATOMICITY */ |
| 101 | |
| 102 | #include <signal.h> |
| 103 | |
| 104 | typedef struct { sig_atomic_t counter; } atomic_t; |
| 105 | |
| 106 | static inline int atomic_dec_and_test(atomic_t *p) |
| 107 | { |
| 108 | (p->counter)--; |
| 109 | return !p->counter; |
| 110 | } |
| 111 | |
| 112 | static inline void atomic_set(atomic_t *p, int v) |
| 113 | { |
| 114 | p->counter=v; |
| 115 | } |
| 116 | |
| 117 | static inline void atomic_inc(atomic_t *p) |
| 118 | { |
| 119 | p->counter++; |
| 120 | } |
| 121 | |
| 122 | static int atomic_read(atomic_t *p) |
| 123 | { |
| 124 | return p->counter; |
| 125 | } |
| 126 | |
| 127 | /* CACHE */ |
| 128 | |
| 129 | #define ____cacheline_aligned |
| 130 | |
| 131 | /* MATH */ |
| 132 | |
| 133 | static inline unsigned int hweight32(unsigned int w) |
| 134 | { |
| 135 | unsigned int res = w - ((w >> 1) & 0x55555555); |
| 136 | res = (res & 0x33333333) + ((res >> 2) & 0x33333333); |
| 137 | res = (res + (res >> 4)) & 0x0F0F0F0F; |
| 138 | res = res + (res >> 8); |
| 139 | return (res + (res >> 16)) & 0x000000FF; |
| 140 | } |
| 141 | |
| 142 | static inline int fls(int x) |
| 143 | { |
| 144 | int r; |
| 145 | //ust// #ifdef CONFIG_X86_CMOV |
| 146 | asm("bsrl %1,%0\n\t" |
| 147 | "cmovzl %2,%0" |
| 148 | : "=&r" (r) : "rm" (x), "rm" (-1)); |
| 149 | //ust// #else |
| 150 | //ust// asm("bsrl %1,%0\n\t" |
| 151 | //ust// "jnz 1f\n\t" |
| 152 | //ust// "movl $-1,%0\n" |
| 153 | //ust// "1:" : "=r" (r) : "rm" (x)); |
| 154 | //ust// #endif |
| 155 | return r + 1; |
| 156 | } |
| 157 | |
| 158 | static __inline__ int get_count_order(unsigned int count) |
| 159 | { |
| 160 | int order; |
| 161 | |
| 162 | order = fls(count) - 1; |
| 163 | if (count & (count - 1)) |
| 164 | order++; |
| 165 | return order; |
| 166 | } |
| 167 | |
| 168 | |
| 169 | /* ARRAYS */ |
| 170 | |
| 171 | #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) |
| 172 | |
| 173 | /* TRACE CLOCK */ |
| 174 | |
| 175 | static inline u64 trace_clock_read64(void) |
| 176 | { |
| 177 | return 0LL; |
| 178 | } |
| 179 | |
| 180 | static inline unsigned int trace_clock_frequency(void) |
| 181 | { |
| 182 | return 0LL; |
| 183 | } |
| 184 | |
| 185 | static inline u32 trace_clock_freq_scale(void) |
| 186 | { |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | #endif /* KERNELCOMPAT_H */ |