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61d0b5a4 RR |
1 | #ifndef KERNEL_H |
2 | #define KERNEL_H | |
3 | #include <stdbool.h> | |
4 | #include <stdlib.h> | |
5 | #include <stddef.h> | |
6 | #include <stdio.h> | |
7 | #include <string.h> | |
8 | #include <assert.h> | |
9 | #include <stdarg.h> | |
10 | ||
a7c49033 | 11 | #include <linux/compiler.h> |
61d0b5a4 RR |
12 | #include <linux/types.h> |
13 | #include <linux/printk.h> | |
14 | #include <linux/bug.h> | |
15 | #include <errno.h> | |
16 | #include <unistd.h> | |
17 | #include <asm/barrier.h> | |
18 | ||
19 | #define CONFIG_SMP | |
20 | ||
21 | #define PAGE_SIZE getpagesize() | |
22 | #define PAGE_MASK (~(PAGE_SIZE-1)) | |
6be3ffaa | 23 | #define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK) |
61d0b5a4 | 24 | |
6be3ffaa | 25 | typedef unsigned long long phys_addr_t; |
61d0b5a4 RR |
26 | typedef unsigned long long dma_addr_t; |
27 | typedef size_t __kernel_size_t; | |
ddab2c0e | 28 | typedef unsigned int __wsum; |
61d0b5a4 RR |
29 | |
30 | struct page { | |
31 | unsigned long long dummy; | |
32 | }; | |
33 | ||
34 | /* Physical == Virtual */ | |
35 | #define virt_to_phys(p) ((unsigned long)p) | |
36 | #define phys_to_virt(a) ((void *)(unsigned long)(a)) | |
37 | /* Page address: Virtual / 4K */ | |
38 | #define page_to_phys(p) ((dma_addr_t)(unsigned long)(p)) | |
39 | #define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK)) | |
40 | ||
41 | #define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE) | |
42 | ||
43 | #define __printf(a,b) __attribute__((format(printf,a,b))) | |
44 | ||
61d0b5a4 RR |
45 | #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) |
46 | ||
47 | extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; | |
48 | static inline void *kmalloc(size_t s, gfp_t gfp) | |
49 | { | |
50 | if (__kmalloc_fake) | |
51 | return __kmalloc_fake; | |
52 | return malloc(s); | |
53 | } | |
ddab2c0e MT |
54 | static inline void *kzalloc(size_t s, gfp_t gfp) |
55 | { | |
56 | void *p = kmalloc(s, gfp); | |
57 | ||
58 | memset(p, 0, s); | |
59 | return p; | |
60 | } | |
61d0b5a4 | 61 | |
6be3ffaa MT |
62 | static inline void *alloc_pages_exact(size_t s, gfp_t gfp) |
63 | { | |
64 | return kmalloc(s, gfp); | |
65 | } | |
66 | ||
61d0b5a4 RR |
67 | static inline void kfree(void *p) |
68 | { | |
69 | if (p >= __kfree_ignore_start && p < __kfree_ignore_end) | |
70 | return; | |
71 | free(p); | |
72 | } | |
73 | ||
6be3ffaa MT |
74 | static inline void free_pages_exact(void *p, size_t s) |
75 | { | |
76 | kfree(p); | |
77 | } | |
78 | ||
61d0b5a4 RR |
79 | static inline void *krealloc(void *p, size_t s, gfp_t gfp) |
80 | { | |
81 | return realloc(p, s); | |
82 | } | |
83 | ||
84 | ||
85 | static inline unsigned long __get_free_page(gfp_t gfp) | |
86 | { | |
87 | void *p; | |
88 | ||
89 | posix_memalign(&p, PAGE_SIZE, PAGE_SIZE); | |
90 | return (unsigned long)p; | |
91 | } | |
92 | ||
93 | static inline void free_page(unsigned long addr) | |
94 | { | |
95 | free((void *)addr); | |
96 | } | |
97 | ||
98 | #define container_of(ptr, type, member) ({ \ | |
99 | const typeof( ((type *)0)->member ) *__mptr = (ptr); \ | |
100 | (type *)( (char *)__mptr - offsetof(type,member) );}) | |
101 | ||
102 | #define uninitialized_var(x) x = x | |
103 | ||
104 | # ifndef likely | |
105 | # define likely(x) (__builtin_expect(!!(x), 1)) | |
106 | # endif | |
107 | # ifndef unlikely | |
108 | # define unlikely(x) (__builtin_expect(!!(x), 0)) | |
109 | # endif | |
110 | ||
111 | #define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__) | |
112 | #ifdef DEBUG | |
113 | #define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__) | |
114 | #else | |
115 | #define pr_debug(format, ...) do {} while (0) | |
116 | #endif | |
117 | #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) | |
118 | #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) | |
119 | ||
6be3ffaa MT |
120 | #define WARN_ON_ONCE(cond) ((cond) && fprintf (stderr, "WARNING\n")) |
121 | ||
61d0b5a4 RR |
122 | #define min(x, y) ({ \ |
123 | typeof(x) _min1 = (x); \ | |
124 | typeof(y) _min2 = (y); \ | |
125 | (void) (&_min1 == &_min2); \ | |
126 | _min1 < _min2 ? _min1 : _min2; }) | |
127 | ||
40c172e5 MT |
128 | /* TODO: empty stubs for now. Broken but enough for virtio_ring.c */ |
129 | #define list_add_tail(a, b) do {} while (0) | |
130 | #define list_del(a) do {} while (0) | |
131 | #define list_for_each_entry(a, b, c) while (0) | |
132 | /* end of stubs */ | |
133 | ||
61d0b5a4 | 134 | #endif /* KERNEL_H */ |