47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
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/****************************************************************
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* *
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* Copyright 2001 Sanchez Computer Associates, Inc. *
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* *
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* This source code contains the intellectual property *
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* of its copyright holder(s), and is made available *
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* under a license. If you do not know the terms of *
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* the license, please stop and do not read further. *
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* *
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****************************************************************/
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#include "mdef.h"
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#include "gdsroot.h"
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#include "gtm_facility.h"
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#include "fileinfo.h"
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#include "gdsbt.h"
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#include "gdsfhead.h"
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#include "gdsblk.h"
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#include "gdsbml.h"
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#include "cli.h"
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#include "dse.h"
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int4 dse_lm_blk_free(int4 blk, sm_uc_ptr_t base_addr)
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{
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sm_uc_ptr_t ptr;
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unsigned char valid;
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int4 bits;
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blk /= BML_BITS_PER_BLK;
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ptr = base_addr + (blk * BML_BITS_PER_BLK) / 8;
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valid = *ptr;
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switch (blk % (8 / BML_BITS_PER_BLK))
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{ case 0: break;
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case 1:
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valid = valid >> BML_BITS_PER_BLK;
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break;
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case 2:
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valid = valid >> 2 * BML_BITS_PER_BLK;
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break;
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case 3:
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valid = valid >> 3 * BML_BITS_PER_BLK;
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break;
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}
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bits = valid & 3;
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return bits;
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}
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