Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef KERNEL_H
3#define KERNEL_H
4#include <stdbool.h>
5#include <stdlib.h>
6#include <stddef.h>
7#include <stdio.h>
8#include <string.h>
9#include <assert.h>
10#include <stdarg.h>
11
12#include <linux/compiler.h>
13#include <linux/types.h>
14#include <linux/printk.h>
15#include <linux/bug.h>
16#include <errno.h>
17#include <unistd.h>
18#include <asm/barrier.h>
19
20#define CONFIG_SMP
21
22#define PAGE_SIZE getpagesize()
23#define PAGE_MASK (~(PAGE_SIZE-1))
24#define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK)
25
26/* generic data direction definitions */
27#define READ 0
28#define WRITE 1
29
30typedef unsigned long long phys_addr_t;
31typedef unsigned long long dma_addr_t;
32typedef size_t __kernel_size_t;
33typedef unsigned int __wsum;
34
35struct page {
36 unsigned long long dummy;
37};
38
39/* Physical == Virtual */
40#define virt_to_phys(p) ((unsigned long)p)
41#define phys_to_virt(a) ((void *)(unsigned long)(a))
42/* Page address: Virtual / 4K */
43#define page_to_phys(p) ((dma_addr_t)(unsigned long)(p))
44#define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK))
45
46#define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE)
47
48#define __printf(a,b) __attribute__((format(printf,a,b)))
49
50#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
51
52extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
53static inline void *kmalloc(size_t s, gfp_t gfp)
54{
55 if (__kmalloc_fake)
56 return __kmalloc_fake;
57 return malloc(s);
58}
59static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp)
60{
61 return kmalloc(n * s, gfp);
62}
63
64static inline void *kzalloc(size_t s, gfp_t gfp)
65{
66 void *p = kmalloc(s, gfp);
67
68 memset(p, 0, s);
69 return p;
70}
71
72static inline void *alloc_pages_exact(size_t s, gfp_t gfp)
73{
74 return kmalloc(s, gfp);
75}
76
77static inline void kfree(void *p)
78{
79 if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
80 return;
81 free(p);
82}
83
84static inline void free_pages_exact(void *p, size_t s)
85{
86 kfree(p);
87}
88
89static inline void *krealloc(void *p, size_t s, gfp_t gfp)
90{
91 return realloc(p, s);
92}
93
94
95static inline unsigned long __get_free_page(gfp_t gfp)
96{
97 void *p;
98
99 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE);
100 return (unsigned long)p;
101}
102
103static inline void free_page(unsigned long addr)
104{
105 free((void *)addr);
106}
107
108#define container_of(ptr, type, member) ({ \
109 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
110 (type *)( (char *)__mptr - offsetof(type,member) );})
111
112#define uninitialized_var(x) x = x
113
114# ifndef likely
115# define likely(x) (__builtin_expect(!!(x), 1))
116# endif
117# ifndef unlikely
118# define unlikely(x) (__builtin_expect(!!(x), 0))
119# endif
120
121#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
122#ifdef DEBUG
123#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
124#else
125#define pr_debug(format, ...) do {} while (0)
126#endif
127#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
128#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
129
130#define WARN_ON_ONCE(cond) (unlikely(cond) ? fprintf (stderr, "WARNING\n") : 0)
131
132#define min(x, y) ({ \
133 typeof(x) _min1 = (x); \
134 typeof(y) _min2 = (y); \
135 (void) (&_min1 == &_min2); \
136 _min1 < _min2 ? _min1 : _min2; })
137
138/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
139#define list_add_tail(a, b) do {} while (0)
140#define list_del(a) do {} while (0)
141#define list_for_each_entry(a, b, c) while (0)
142/* end of stubs */
143
144#endif /* KERNEL_H */