1/*	$NetBSD: atom-bits.h,v 1.3 2021/12/18 23:45:08 riastradh Exp $	*/
2
3/*
4 * Copyright 2008 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Author: Stanislaw Skowronek
25 */
26
27#ifndef ATOM_BITS_H
28#define ATOM_BITS_H
29
30static inline uint8_t get_u8(void *bios, int ptr)
31{
32    return ((unsigned char *)bios)[ptr];
33}
34#define U8(ptr) get_u8(ctx->ctx->bios, (ptr))
35#define CU8(ptr) get_u8(ctx->bios, (ptr))
36static inline uint16_t get_u16(void *bios, int ptr)
37{
38    return get_u8(bios ,ptr)|(((uint16_t)get_u8(bios, ptr+1))<<8);
39}
40#define U16(ptr) get_u16(ctx->ctx->bios, (ptr))
41#define CU16(ptr) get_u16(ctx->bios, (ptr))
42static inline uint32_t get_u32(void *bios, int ptr)
43{
44    return get_u16(bios, ptr)|(((uint32_t)get_u16(bios, ptr+2))<<16);
45}
46#define U32(ptr) get_u32(ctx->ctx->bios, (ptr))
47#define CU32(ptr) get_u32(ctx->bios, (ptr))
48#define CSTR(ptr) (((char *)(ctx->bios))+(ptr))
49
50#endif
51