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29 lines
837 B
C
29 lines
837 B
C
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#ifndef _hash_h_
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#define _hash_h_
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#include "block.h"
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#define LOG_NUM_BUCKETS 12
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#define NUM_HASH_BUCKETS (1UL << LOG_NUM_BUCKETS)
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/* This hash function assumes the low bit conveys no information (== 0). */
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#define BLOCK_HASH(x) ((unsigned)((((x) ^ ((x) >> LOG_NUM_BUCKETS)) >> 1) \
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% NUM_HASH_BUCKETS))
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extern Block *block_hash_table[NUM_HASH_BUCKETS];
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extern void hash_init (void);
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extern void hash_destroy (void);
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extern Block *hash_lookup (uint32 addr);
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/* defined in `syn68k_public.h'
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extern const uint16 *hash_lookup_code_and_create_if_needed (uint32 addr); */
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extern const uint16 *hash_lookup_code_and_create_if_needed (uint32 addr);
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extern void hash_insert (Block *b);
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extern void hash_remove (Block *b);
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#ifdef DEBUG
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extern BOOL hash_verify (void);
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extern void hash_stats (void);
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#endif
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#endif /* Not _hash_h_ */
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