LXR linux/tools/virtio/linux/kernel.h

   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#define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK)
  24
  25typedef unsigned long long phys_addr_t;
  26typedef unsigned long long dma_addr_t;
  27typedef size_t __kernel_size_t;
  28typedef unsigned int __wsum;
  29
  30struct 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
  45#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
  46
  47extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
  48static inline void *kmalloc(size_t s, gfp_t gfp)
  49{
  50        if (__kmalloc_fake)
  51                return __kmalloc_fake;
  52        return malloc(s);
  53}
  54static 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}
  61
  62static inline void *alloc_pages_exact(size_t s, gfp_t gfp)
  63{
  64        return kmalloc(s, gfp);
  65}
  66
  67static inline void kfree(void *p)
  68{
  69        if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
  70                return;
  71        free(p);
  72}
  73
  74static inline void free_pages_exact(void *p, size_t s)
  75{
  76        kfree(p);
  77}
  78
  79static inline void *krealloc(void *p, size_t s, gfp_t gfp)
  80{
  81        return realloc(p, s);
  82}
  83
  84
  85static 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
  93static 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
 120#define WARN_ON_ONCE(cond) ((cond) && fprintf (stderr, "WARNING\n"))
 121
 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
 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
 134#endif /* KERNEL_H */
 135