WebSVN - shark - Blame - Rev 3 - /shark/trunk/kernel/mem.c

Rev	Author	Line No.	Line
2	pj	1	/*
		2	* Project: S.Ha.R.K.
		3	*
		4	* Coordinators:
		5	* Giorgio Buttazzo <giorgio@sssup.it>
		6	* Paolo Gai <pj@gandalf.sssup.it>
		7	*
		8	* Authors :
		9	* Paolo Gai <pj@gandalf.sssup.it>
		10	* (see the web pages for full authors list)
		11	*
		12	* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
		13	*
		14	* http://www.sssup.it
		15	* http://retis.sssup.it
		16	* http://shark.sssup.it
		17	*/
		18
		19	/**
		20	------------
		21	CVS : $Id: mem.c,v 1.1.1.1 2002-03-29 14:12:52 pj Exp $
		22
		23	File: $File$
		24	Revision: $Revision: 1.1.1.1 $
		25	Last update: $Date: 2002-03-29 14:12:52 $
		26	------------
		27
		28	Basic Memory Manager Functions:
		29
		30	**/
		31
		32	/*
		33	* Copyright (C) 2000 Paolo Gai
		34	*
		35	* This program is free software; you can redistribute it and/or modify
		36	* it under the terms of the GNU General Public License as published by
		37	* the Free Software Foundation; either version 2 of the License, or
		38	* (at your option) any later version.
		39	*
		40	* This program is distributed in the hope that it will be useful,
		41	* but WITHOUT ANY WARRANTY; without even the implied warranty of
		42	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		43	* GNU General Public License for more details.
		44	*
		45	* You should have received a copy of the GNU General Public License
		46	* along with this program; if not, write to the Free Software
		47	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		48	*
		49	*/
		50
		51
		52	#include <kernel/func.h>
		53	#include <kernel/lmm.h>
		54
		55	static lmm_t lmm;
		56	static lmm_region_t region1M;
		57	static lmm_region_t region16M;
		58	static lmm_region_t region;
		59
		60	void kern_mem_init(struct multiboot_info *multiboot)
		61	{
		62	DWORD lowsize, highsize;
		63	LIN_ADDR lowp, highp;
		64
		65	X_meminfo(&highp, &highsize, &lowp, &lowsize);
		66
		67	lmm_init(&lmm);
		68
		69	/* Three memory regions:
		70	- under 1Mb
		71	- from 1Mb to 16Mb
		72	- all the other memory...
		73	*/
		74	lmm_add_region(&lmm, &region1M , (void*)0x00000000, 0x000FFFFF,
		75	MEMORY_UNDER_16M, 0);
		76	lmm_add_region(&lmm, &region16M, (void*)0x00100000, 0x00FFFFFF,
		77	MEMORY_FROM_1M_TO_16M, 1);
		78	lmm_add_region(&lmm, &region , (void*)0x01000000, 0xFEFFFFFF,
		79
		80
		81	// kern_printf("highsize:%d\n", highsize);
		82	/* blocks of free memory */
		83	if (lowsize)
		84	lmm_add_free(&lmm, (void *)lowp, lowsize-1);
		85	if (highsize)
		86	lmm_add_free(&lmm, (void *)highp, highsize);
		87	}
		88
		89	void *kern_alloc(DWORD s)
		90	{
		91	if (s==0) return NULL;
		92	return lmm_alloc(&lmm, s, 0);
		93	}
		94
		95	void *kern_alloc_aligned(size_t size, lmm_flags_t flags,
		96	int align_bits, DWORD align_ofs)
		97	{
		98	return lmm_alloc_aligned(&lmm, size, flags, align_bits, align_ofs);
		99	}
		100
		101	void *kern_alloc_page(lmm_flags_t flags)
		102	{
		103	return lmm_alloc_page(&lmm, flags);
		104	}
		105
		106	void *kern_alloc_gen(size_t size, lmm_flags_t flags,
		107	int align_bits, DWORD align_ofs,
		108	DWORD bounds_min, DWORD bounds_max)
		109	{
		110	return lmm_alloc_gen(&lmm, size, flags, align_bits, align_ofs,
		111	bounds_min, bounds_max);
		112	}
		113
		114	void kern_free(void *block, size_t size)
		115	{
		116	lmm_free(&lmm, block, size);
		117	}
		118
		119	void kern_free_page(void *block)
		120	{
		121	lmm_free_page(&lmm, block);
		122	}
		123
		124	void *DOS_alloc(DWORD size)
		125	{
		126	return lmm_alloc(&lmm, size, MEMORY_UNDER_1M);
		127	}
		128
		129	void DOS_free(void *ptr,DWORD size)
		130	{
		131	lmm_free(&lmm, ptr, size);
		132	}
		133
		134
		135	void kern_mem_dump(void)
		136	{
		137	lmm_dump(&lmm);
		138	lmm_stats(&lmm);
		139	}

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(root)/shark/trunk/kernel/mem.c @ 509 - Rev 3