2 * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
11 #ifndef VPX_PORTS_MEM_OPS_ALIGNED_H_
12 #define VPX_PORTS_MEM_OPS_ALIGNED_H_
14 #include "vpx/vpx_integer.h"
17 * \brief Provides portable memory access primitives for operating on aligned
20 * This file is split from mem_ops.h for easier maintenance. See mem_ops.h
21 * for a more detailed description of these primitives.
23 #ifndef INCLUDED_BY_MEM_OPS_H
24 #error Include mem_ops.h, not mem_ops_aligned.h directly.
27 /* Architectures that provide instructions for doing this byte swapping
28 * could redefine these macros.
30 #define swap_endian_16(val, raw) \
32 val = (uint16_t)(((raw >> 8) & 0x00ff) | ((raw << 8) & 0xff00)); \
34 #define swap_endian_32(val, raw) \
36 val = ((raw >> 24) & 0x000000ff) | ((raw >> 8) & 0x0000ff00) | \
37 ((raw << 8) & 0x00ff0000) | ((raw << 24) & 0xff000000); \
39 #define swap_endian_16_se(val, raw) \
41 swap_endian_16(val, raw); \
42 val = ((val << 16) >> 16); \
44 #define swap_endian_32_se(val, raw) swap_endian_32(val, raw)
46 #define mem_get_ne_aligned_generic(end, sz) \
47 static VPX_INLINE unsigned MEM_VALUE_T mem_get_##end##sz##_aligned( \
49 const uint##sz##_t *mem = (const uint##sz##_t *)vmem; \
53 #define mem_get_sne_aligned_generic(end, sz) \
54 static VPX_INLINE signed MEM_VALUE_T mem_get_s##end##sz##_aligned( \
56 const int##sz##_t *mem = (const int##sz##_t *)vmem; \
60 #define mem_get_se_aligned_generic(end, sz) \
61 static VPX_INLINE unsigned MEM_VALUE_T mem_get_##end##sz##_aligned( \
63 const uint##sz##_t *mem = (const uint##sz##_t *)vmem; \
64 unsigned MEM_VALUE_T val, raw = *mem; \
65 swap_endian_##sz(val, raw); \
69 #define mem_get_sse_aligned_generic(end, sz) \
70 static VPX_INLINE signed MEM_VALUE_T mem_get_s##end##sz##_aligned( \
72 const int##sz##_t *mem = (const int##sz##_t *)vmem; \
73 unsigned MEM_VALUE_T val, raw = *mem; \
74 swap_endian_##sz##_se(val, raw); \
78 #define mem_put_ne_aligned_generic(end, sz) \
79 static VPX_INLINE void mem_put_##end##sz##_aligned(void *vmem, \
81 uint##sz##_t *mem = (uint##sz##_t *)vmem; \
82 *mem = (uint##sz##_t)val; \
85 #define mem_put_se_aligned_generic(end, sz) \
86 static VPX_INLINE void mem_put_##end##sz##_aligned(void *vmem, \
88 uint##sz##_t *mem = (uint##sz##_t *)vmem, raw; \
89 swap_endian_##sz(raw, val); \
90 *mem = (uint##sz##_t)raw; \
93 #include "vpx_config.h"
95 #define mem_get_be_aligned_generic(sz) mem_get_ne_aligned_generic(be, sz)
96 #define mem_get_sbe_aligned_generic(sz) mem_get_sne_aligned_generic(be, sz)
97 #define mem_get_le_aligned_generic(sz) mem_get_se_aligned_generic(le, sz)
98 #define mem_get_sle_aligned_generic(sz) mem_get_sse_aligned_generic(le, sz)
99 #define mem_put_be_aligned_generic(sz) mem_put_ne_aligned_generic(be, sz)
100 #define mem_put_le_aligned_generic(sz) mem_put_se_aligned_generic(le, sz)
102 #define mem_get_be_aligned_generic(sz) mem_get_se_aligned_generic(be, sz)
103 #define mem_get_sbe_aligned_generic(sz) mem_get_sse_aligned_generic(be, sz)
104 #define mem_get_le_aligned_generic(sz) mem_get_ne_aligned_generic(le, sz)
105 #define mem_get_sle_aligned_generic(sz) mem_get_sne_aligned_generic(le, sz)
106 #define mem_put_be_aligned_generic(sz) mem_put_se_aligned_generic(be, sz)
107 #define mem_put_le_aligned_generic(sz) mem_put_ne_aligned_generic(le, sz)
110 /* clang-format off */
111 #undef mem_get_be16_aligned
112 #define mem_get_be16_aligned mem_ops_wrap_symbol(mem_get_be16_aligned)
113 mem_get_be_aligned_generic(16)
115 #undef mem_get_be32_aligned
116 #define mem_get_be32_aligned mem_ops_wrap_symbol(mem_get_be32_aligned)
117 mem_get_be_aligned_generic(32)
119 #undef mem_get_le16_aligned
120 #define mem_get_le16_aligned mem_ops_wrap_symbol(mem_get_le16_aligned)
121 mem_get_le_aligned_generic(16)
123 #undef mem_get_le32_aligned
124 #define mem_get_le32_aligned mem_ops_wrap_symbol(mem_get_le32_aligned)
125 mem_get_le_aligned_generic(32)
127 #undef mem_get_sbe16_aligned
128 #define mem_get_sbe16_aligned mem_ops_wrap_symbol(mem_get_sbe16_aligned)
129 mem_get_sbe_aligned_generic(16)
131 #undef mem_get_sbe32_aligned
132 #define mem_get_sbe32_aligned mem_ops_wrap_symbol(mem_get_sbe32_aligned)
133 mem_get_sbe_aligned_generic(32)
135 #undef mem_get_sle16_aligned
136 #define mem_get_sle16_aligned mem_ops_wrap_symbol(mem_get_sle16_aligned)
137 mem_get_sle_aligned_generic(16)
139 #undef mem_get_sle32_aligned
140 #define mem_get_sle32_aligned mem_ops_wrap_symbol(mem_get_sle32_aligned)
141 mem_get_sle_aligned_generic(32)
143 #undef mem_put_be16_aligned
144 #define mem_put_be16_aligned mem_ops_wrap_symbol(mem_put_be16_aligned)
145 mem_put_be_aligned_generic(16)
147 #undef mem_put_be32_aligned
148 #define mem_put_be32_aligned mem_ops_wrap_symbol(mem_put_be32_aligned)
149 mem_put_be_aligned_generic(32)
151 #undef mem_put_le16_aligned
152 #define mem_put_le16_aligned mem_ops_wrap_symbol(mem_put_le16_aligned)
153 mem_put_le_aligned_generic(16)
155 #undef mem_put_le32_aligned
156 #define mem_put_le32_aligned mem_ops_wrap_symbol(mem_put_le32_aligned)
157 mem_put_le_aligned_generic(32)
159 #undef mem_get_ne_aligned_generic
160 #undef mem_get_se_aligned_generic
161 #undef mem_get_sne_aligned_generic
162 #undef mem_get_sse_aligned_generic
163 #undef mem_put_ne_aligned_generic
164 #undef mem_put_se_aligned_generic
165 #undef swap_endian_16
166 #undef swap_endian_32
167 #undef swap_endian_16_se
168 #undef swap_endian_32_se
169 /* clang-format on */
171 #endif // VPX_PORTS_MEM_OPS_ALIGNED_H_