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 11 #include <linux/compiler.h> 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)) 23 24 typedef unsigned long long dma_addr_t; 25 typedef size_t __kernel_size_t; 26 typedef unsigned int __wsum; 27 28 struct page { 29 unsigned long long dummy; 30 }; 31 32 /* Physical == Virtual */ 33 #define virt_to_phys(p) ((unsigned long)p) 34 #define phys_to_virt(a) ((void *)(unsigned long)(a)) 35 /* Page address: Virtual / 4K */ 36 #define page_to_phys(p) ((dma_addr_t)(unsigned long)(p)) 37 #define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK)) 38 39 #define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE) 40 41 #define __printf(a,b) __attribute__((format(printf,a,b))) 42 43 #define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0])) 44 45 extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end; 46 static inline void *kmalloc(size_t s, gfp_t gfp) 47 { 48 if (__kmalloc_fake) 49 return __kmalloc_fake; 50 return malloc(s); 51 } 52 static inline void *kzalloc(size_t s, gfp_t gfp) 53 { 54 void *p = kmalloc(s, gfp); 55 56 memset(p, 0, s); 57 return p; 58 } 59 60 static inline void kfree(void *p) 61 { 62 if (p >= __kfree_ignore_start && p < __kfree_ignore_end) 63 return; 64 free(p); 65 } 66 67 static inline void *krealloc(void *p, size_t s, gfp_t gfp) 68 { 69 return realloc(p, s); 70 } 71 72 73 static inline unsigned long __get_free_page(gfp_t gfp) 74 { 75 void *p; 76 77 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE); 78 return (unsigned long)p; 79 } 80 81 static inline void free_page(unsigned long addr) 82 { 83 free((void *)addr); 84 } 85 86 #define container_of(ptr, type, member) ({ \ 87 const typeof( ((type *)0)->member ) *__mptr = (ptr); \ 88 (type *)( (char *)__mptr - offsetof(type,member) );}) 89 90 #define uninitialized_var(x) x = x 91 92 # ifndef likely 93 # define likely(x) (__builtin_expect(!!(x), 1)) 94 # endif 95 # ifndef unlikely 96 # define unlikely(x) (__builtin_expect(!!(x), 0)) 97 # endif 98 99 #define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 100 #ifdef DEBUG 101 #define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__) 102 #else 103 #define pr_debug(format, ...) do {} while (0) 104 #endif 105 #define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) 106 #define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__) 107 108 #define min(x, y) ({ \ 109 typeof(x) _min1 = (x); \ 110 typeof(y) _min2 = (y); \ 111 (void) (&_min1 == &_min2); \ 112 _min1 < _min2 ? _min1 : _min2; }) 113 114 /* TODO: empty stubs for now. Broken but enough for virtio_ring.c */ 115 #define list_add_tail(a, b) do {} while (0) 116 #define list_del(a) do {} while (0) 117 #define list_for_each_entry(a, b, c) while (0) 118 /* end of stubs */ 119 120 #endif /* KERNEL_H */ 121