1
2 #include <common.h>
3 #include <malloc.h>
4 #include <memalign.h>
5 #include <asm/cache.h>
6 #include <linux/compat.h>
7
8 struct p_current cur = {
9 .pid = 1,
10 };
11 __maybe_unused struct p_current *current = &cur;
12
copy_from_user(void * dest,const void * src,unsigned long count)13 unsigned long copy_from_user(void *dest, const void *src,
14 unsigned long count)
15 {
16 memcpy((void *)dest, (void *)src, count);
17 return 0;
18 }
19
kmalloc(size_t size,int flags)20 void *kmalloc(size_t size, int flags)
21 {
22 void *p;
23
24 p = malloc_cache_aligned(size);
25 if (p && flags & __GFP_ZERO)
26 memset(p, 0, size);
27
28 return p;
29 }
30
get_mem(int element_sz)31 struct kmem_cache *get_mem(int element_sz)
32 {
33 struct kmem_cache *ret;
34
35 ret = memalign(ARCH_DMA_MINALIGN, sizeof(struct kmem_cache));
36 ret->sz = element_sz;
37
38 return ret;
39 }
40
kmem_cache_alloc(struct kmem_cache * obj,int flag)41 void *kmem_cache_alloc(struct kmem_cache *obj, int flag)
42 {
43 return malloc_cache_aligned(obj->sz);
44 }
45
46 /**
47 * kmemdup - duplicate region of memory
48 *
49 * @src: memory region to duplicate
50 * @len: memory region length
51 * @gfp: GFP mask to use
52 *
53 * Return: newly allocated copy of @src or %NULL in case of error
54 */
kmemdup(const void * src,size_t len,gfp_t gfp)55 void *kmemdup(const void *src, size_t len, gfp_t gfp)
56 {
57 void *p;
58
59 p = kmalloc(len, gfp);
60 if (p)
61 memcpy(p, src, len);
62 return p;
63 }
64