113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/* -*- Mode: C; c-basic-offset: 3 -*-
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*
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* types.h - Low-level type, macro, and inline definitions.
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*
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* This file is part of Metalkit, a simple collection of modules for
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* writing software that runs on the bare metal. Get the latest code
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* at http://svn.navi.cx/misc/trunk/metalkit/
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*
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* Copyright (c) 2008-2009 Micah Dowty
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __TYPES_H__
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#define __TYPES_H__
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typedef long long int64;
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typedef unsigned long long uint64;
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typedef int int32;
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typedef unsigned int uint32;
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typedef short int16;
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typedef unsigned short uint16;
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typedef char int8;
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typedef unsigned char uint8;
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typedef uint8 Bool;
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typedef struct {
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int x, y;
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} IVec2;
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#define NULL ((void*)0)
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#define TRUE 1
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#define FALSE 0
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#define offsetof(type, member) ((uint32)(&((type*)NULL)->member))
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#define arraysize(var) (sizeof(var) / sizeof((var)[0]))
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#define roundup(x, y) (((x) + ((y) - 1)) / (y))
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#define PACKED __attribute__ ((__packed__))
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#define ALIGNED(n) __attribute__ ((aligned(n)))
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#define fastcall __attribute__ ((fastcall))
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#define MIN(a, b) ((a) < (b) ? (a) : (b))
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#define MAX(a, b) ((a) > (b) ? (a) : (b))
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static inline void
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memcpy(void *dest, const void *src, uint32 size)
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{
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asm volatile ("cld; rep movsb" : "+c" (size), "+S" (src), "+D" (dest) :: "memory");
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}
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static inline void
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memset(void *dest, uint8 value, uint32 size)
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{
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asm volatile ("cld; rep stosb" : "+c" (size), "+D" (dest) : "a" (value) : "memory");
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}
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static inline void
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memcpy16(void *dest, const void *src, uint32 size)
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{
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asm volatile ("cld; rep movsw" : "+c" (size), "+S" (src), "+D" (dest) :: "memory");
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}
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static inline void
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memset16(void *dest, uint16 value, uint32 size)
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{
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asm volatile ("cld; rep stosw" : "+c" (size), "+D" (dest) : "a" (value) : "memory");
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}
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static inline void
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memcpy32(void *dest, const void *src, uint32 size)
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{
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asm volatile ("cld; rep movsl" : "+c" (size), "+S" (src), "+D" (dest) :: "memory");
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}
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static inline void
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memset32(void *dest, uint32 value, uint32 size)
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{
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asm volatile ("cld; rep stosl" : "+c" (size), "+D" (dest) : "a" (value) : "memory");
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}
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#define Atomic_Exchange(mem, reg) \
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asm volatile ("xchgl %0, %1" : "+r" (reg), "+m" (mem) :)
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#define Atomic_Or(mem, reg) \
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asm volatile ("lock orl %1, %0" :"+m" (mem) :"r" (reg))
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#endif /* __TYPES_H__ */
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