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      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 
     30 static 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))
     36 static 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))
     42 static 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