atom-bits.h revision 1.1 
1/*	$OpenBSD: atom-bits.h,v 1.1 2013/08/12 04:11:53 jsg Exp $	*/
2/*
3 * Copyright 2008 Advanced Micro Devices, Inc.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
22 *
23 * Author: Stanislaw Skowronek
24 */
25
26#ifndef ATOM_BITS_H
27#define ATOM_BITS_H
28
29static inline uint8_t get_u8(void *bios, int ptr)
30{
31    return ((unsigned char *)bios)[ptr];
32}
33#define U8(ptr) get_u8(ctx->ctx->bios, (ptr))
34#define CU8(ptr) get_u8(ctx->bios, (ptr))
35static inline uint16_t get_u16(void *bios, int ptr)
36{
37    return get_u8(bios ,ptr)|(((uint16_t)get_u8(bios, ptr+1))<<8);
38}
39#define U16(ptr) get_u16(ctx->ctx->bios, (ptr))
40#define CU16(ptr) get_u16(ctx->bios, (ptr))
41static inline uint32_t get_u32(void *bios, int ptr)
42{
43    return get_u16(bios, ptr)|(((uint32_t)get_u16(bios, ptr+2))<<16);
44}
45#define U32(ptr) get_u32(ctx->ctx->bios, (ptr))
46#define CU32(ptr) get_u32(ctx->bios, (ptr))
47#define CSTR(ptr) (((char *)(ctx->bios))+(ptr))
48
49#endif
50