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[pcsx_rearmed.git] / deps / lightning / lib / jit_memory.c
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4a71579b 1/*
79bfeef6 2 * Copyright (C) 2013-2023 Free Software Foundation, Inc.
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3 *
4 * This file is part of GNU lightning.
5 *
6 * GNU lightning is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU Lesser General Public License as published
8 * by the Free Software Foundation; either version 3, or (at your option)
9 * any later version.
10 *
11 * GNU lightning is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
13 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
14 * License for more details.
15 *
16 * Authors:
17 * Paulo Cesar Pereira de Andrade
18 */
19
20#include <lightning.h>
21#include <lightning/jit_private.h>
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22
23/*
24 * Prototypes
25 */
26static void *jit_default_alloc_func(size_t);
27static void *jit_default_realloc_func(void*, size_t);
28static void jit_default_free_func(void *);
29
30/*
31 * Initialization
32 */
33static jit_alloc_func_ptr jit_alloc_ptr = jit_default_alloc_func;
34static jit_realloc_func_ptr jit_realloc_ptr = jit_default_realloc_func;
35static jit_free_func_ptr jit_free_ptr = jit_default_free_func;
36
37/*
38 * Implementation
39 */
40jit_pointer_t
41jit_memcpy(jit_pointer_t dst, const void * src, jit_word_t size)
42{
43 if (size)
44 return (memcpy(dst, src, size));
45 return (dst);
46}
47
48jit_pointer_t
49jit_memmove(jit_pointer_t dst, const void *src , jit_word_t size)
50{
51 if (size)
52 return (memmove(dst, src, size));
53 return (dst);
54}
55
56void
57jit_set_memory_functions(jit_alloc_func_ptr alloc_ptr,
58 jit_realloc_func_ptr realloc_ptr,
59 jit_free_func_ptr free_ptr)
60{
61 if (alloc_ptr == NULL)
62 alloc_ptr = jit_default_alloc_func;
63 if (realloc_ptr == NULL)
64 realloc_ptr = jit_default_realloc_func;
65 if (free_ptr == NULL)
66 free_ptr = jit_default_free_func;
67 jit_alloc_ptr = alloc_ptr;
68 jit_realloc_ptr = realloc_ptr;
69 jit_free_ptr = free_ptr;
70}
71
72void
73jit_get_memory_functions(jit_alloc_func_ptr *alloc_ptr,
74 jit_realloc_func_ptr *realloc_ptr,
75 jit_free_func_ptr *free_ptr)
76{
77 *alloc_ptr = jit_alloc_ptr;
78 *realloc_ptr = jit_realloc_ptr;
79 *free_ptr = jit_free_ptr;
80}
81
82void
83jit_alloc(jit_pointer_t *ptr, jit_word_t size)
84{
85 *ptr = (*jit_alloc_ptr)(size);
86 memset(*ptr, 0, size);
87}
88
89void
90jit_realloc(jit_pointer_t *ptr, jit_word_t old_size, jit_word_t new_size)
91{
92 *ptr = (*jit_realloc_ptr)(*ptr, new_size);
93 if (old_size < new_size)
94 memset((jit_int8_t*)*ptr + old_size, 0, new_size - old_size);
95}
96
97void
98jit_free(jit_pointer_t *ptr)
99{
100 if (*ptr) {
101 (*jit_free_ptr)(*ptr);
102 *ptr = NULL;
103 }
104}
105
106static void *
107jit_default_alloc_func(size_t size)
108{
109 return (malloc(size));
110}
111
112static void *
113jit_default_realloc_func(void *ptr, size_t size)
114{
115 return (realloc(ptr, size));
116}
117
118static void
119jit_default_free_func(void *ptr)
120{
121 free(ptr);
122}