/* 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/types.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) typedef unsigned long long phys_addr_t; 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 *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) );}) #define uninitialized_var(x) x = x # ifndef likely # define likely(x) (__builtin_expect(!!(x), 1)) # endif # ifndef unlikely # define unlikely(x) (__builtin_expect(!!(x), 0)) # endif #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 WARN_ON_ONCE(cond) ((cond) && fprintf (stderr, "WARNING\n")) #define min(x, y) ({ \ typeof(x) _min1 = (x); \ typeof(y) _min2 = (y); \ (void) (&_min1 == &_min2); \ _min1 < _min2 ? _min1 : _min2; }) /* TODO: empty stubs for now. Broken but enough for virtio_ring.c */ #define list_add_tail(a, b) do {} while (0) #define list_del(a) do {} while (0) #define list_for_each_entry(a, b, c) while (0) /* end of stubs */ #endif /* KERNEL_H */