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
26typedef unsigned long long phys_addr_t;
27typedef unsigned long long dma_addr_t;
28typedef size_t __kernel_size_t;
29typedef unsigned int __wsum;
30
31struct page {
32 unsigned long long dummy;
33};
34
35/* Physical == Virtual */
36#define virt_to_phys(p) ((unsigned long)p)
37#define phys_to_virt(a) ((void *)(unsigned long)(a))
38/* Page address: Virtual / 4K */
39#define page_to_phys(p) ((dma_addr_t)(unsigned long)(p))
40#define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK))
41
42#define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE)
43
44#define __printf(a,b) __attribute__((format(printf,a,b)))
45
46#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
47
48extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
49static inline void *kmalloc(size_t s, gfp_t gfp)
50{
51 if (__kmalloc_fake)
52 return __kmalloc_fake;
53 return malloc(s);
54}
55static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp)
56{
57 return kmalloc(n * s, gfp);
58}
59
60static inline void *kzalloc(size_t s, gfp_t gfp)
61{
62 void *p = kmalloc(s, gfp);
63
64 memset(p, 0, s);
65 return p;
66}
67
68static inline void *alloc_pages_exact(size_t s, gfp_t gfp)
69{
70 return kmalloc(s, gfp);
71}
72
73static inline void kfree(void *p)
74{
75 if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
76 return;
77 free(p);
78}
79
80static inline void free_pages_exact(void *p, size_t s)
81{
82 kfree(p);
83}
84
85static inline void *krealloc(void *p, size_t s, gfp_t gfp)
86{
87 return realloc(p, s);
88}
89
90
91static inline unsigned long __get_free_page(gfp_t gfp)
92{
93 void *p;
94
95 posix_memalign(&p, PAGE_SIZE, PAGE_SIZE);
96 return (unsigned long)p;
97}
98
99static inline void free_page(unsigned long addr)
100{
101 free((void *)addr);
102}
103
104#define container_of(ptr, type, member) ({ \
105 const typeof( ((type *)0)->member ) *__mptr = (ptr); \
106 (type *)( (char *)__mptr - offsetof(type,member) );})
107
108#define uninitialized_var(x) x = x
109
110# ifndef likely
111# define likely(x) (__builtin_expect(!!(x), 1))
112# endif
113# ifndef unlikely
114# define unlikely(x) (__builtin_expect(!!(x), 0))
115# endif
116
117#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
118#ifdef DEBUG
119#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
120#else
121#define pr_debug(format, ...) do {} while (0)
122#endif
123#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
124#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
125
126#define WARN_ON_ONCE(cond) ((cond) ? fprintf (stderr, "WARNING\n") : 0)
127
128#define min(x, y) ({ \
129 typeof(x) _min1 = (x); \
130 typeof(y) _min2 = (y); \
131 (void) (&_min1 == &_min2); \
132 _min1 < _min2 ? _min1 : _min2; })
133
134/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
135#define list_add_tail(a, b) do {} while (0)
136#define list_del(a) do {} while (0)
137#define list_for_each_entry(a, b, c) while (0)
138/* end of stubs */
139
140#endif /* KERNEL_H */