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