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/*
* Copyright (C) 2008 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __LINKER_BA_H
#define __LINKER_BA_H
struct ba_bits {
unsigned allocated:1; /* 1 if allocated, 0 if free */
unsigned order:7; /* size of the region in ba space */
};
struct ba {
/* start address of the ba space */
unsigned long base;
/* total size of the ba space */
unsigned long size;
/* the smaller allocation that can be made */
unsigned long min_alloc;
/* the order of the largest allocation that can be made */
unsigned long max_order;
/* number of entries in the ba space */
int num_entries;
/* the bitmap for the region indicating which entries are allocated
* and which are free */
struct ba_bits *bitmap;
};
extern void ba_init(struct ba *ba);
extern int ba_allocate(struct ba *ba, unsigned long len);
extern int ba_free(struct ba *ba, int index);
extern unsigned long ba_start_addr(struct ba *ba, int index);
extern unsigned long ba_len(struct ba *ba, int index);
#endif
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