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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef KERNEL_H
#define KERNEL_H
#include <stdbool.h>
#include <stdlib.h>
#include <stddef.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <stdarg.h>
#include <linux/compiler.h>
#include <linux/log2.h>
#include <linux/types.h>
#include <linux/overflow.h>
#include <linux/list.h>
#include <linux/printk.h>
#include <linux/bug.h>
#include <errno.h>
#include <unistd.h>
#include <asm/barrier.h>
#define CONFIG_SMP
#define PAGE_SIZE getpagesize()
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PAGE_ALIGN(x) ((x + PAGE_SIZE - 1) & PAGE_MASK)
/* generic data direction definitions */
#define READ 0
#define WRITE 1
typedef unsigned long long dma_addr_t;
typedef size_t __kernel_size_t;
typedef unsigned int __wsum;
struct page {
unsigned long long dummy;
};
/* Physical == Virtual */
#define virt_to_phys(p) ((unsigned long)p)
#define phys_to_virt(a) ((void *)(unsigned long)(a))
/* Page address: Virtual / 4K */
#define page_to_phys(p) ((dma_addr_t)(unsigned long)(p))
#define virt_to_page(p) ((struct page *)((unsigned long)p & PAGE_MASK))
#define offset_in_page(p) (((unsigned long)p) % PAGE_SIZE)
#define __printf(a,b) __attribute__((format(printf,a,b)))
#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
extern void *__kmalloc_fake, *__kfree_ignore_start, *__kfree_ignore_end;
static inline void *kmalloc(size_t s, gfp_t gfp)
{
if (__kmalloc_fake)
return __kmalloc_fake;
return malloc(s);
}
static inline void *kmalloc_array(unsigned n, size_t s, gfp_t gfp)
{
return kmalloc(n * s, gfp);
}
static inline void *kzalloc(size_t s, gfp_t gfp)
{
void *p = kmalloc(s, gfp);
memset(p, 0, s);
return p;
}
static inline void *alloc_pages_exact(size_t s, gfp_t gfp)
{
return kmalloc(s, gfp);
}
static inline void kfree(void *p)
{
if (p >= __kfree_ignore_start && p < __kfree_ignore_end)
return;
free(p);
}
static inline void free_pages_exact(void *p, size_t s)
{
kfree(p);
}
static inline void *krealloc(void *p, size_t s, gfp_t gfp)
{
return realloc(p, s);
}
static inline unsigned long __get_free_page(gfp_t gfp)
{
void *p;
posix_memalign(&p, PAGE_SIZE, PAGE_SIZE);
return (unsigned long)p;
}
static inline void free_page(unsigned long addr)
{
free((void *)addr);
}
#define container_of(ptr, type, member) ({ \
const typeof( ((type *)0)->member ) *__mptr = (ptr); \
(type *)( (char *)__mptr - offsetof(type,member) );})
# ifndef likely
# define likely(x) (__builtin_expect(!!(x), 1))
# endif
# ifndef unlikely
# define unlikely(x) (__builtin_expect(!!(x), 0))
# endif
static inline void *krealloc_array(void *p, size_t new_n, size_t new_size, gfp_t gfp)
{
size_t bytes;
if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
return NULL;
return krealloc(p, bytes, gfp);
}
#define pr_err(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#ifdef DEBUG
#define pr_debug(format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#else
#define pr_debug(format, ...) do {} while (0)
#endif
#define dev_err(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define dev_warn(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define dev_warn_once(dev, format, ...) fprintf (stderr, format, ## __VA_ARGS__)
#define min(x, y) ({ \
typeof(x) _min1 = (x); \
typeof(y) _min2 = (y); \
(void) (&_min1 == &_min2); \
_min1 < _min2 ? _min1 : _min2; })
#endif /* KERNEL_H */
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