| /* |
| * 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 |