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