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#ifndef MP_HASH__H
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#ifndef MP_HASH__H
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#define MP_HASH__H
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#define MP_HASH__H
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#include <stdint.h>
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#include <stdint.h>
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//! Default size of the matchpoint hash table. Largest prime < 2^10
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//! Default size of the matchpoint hash table. Largest prime < 2^10
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#define DEFAULT_MP_HASH_SIZE 1021
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#define DEFAULT_MP_HASH_SIZE 1021
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//! Enumeration of different types of matchpoint.
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//! Enumeration of different types of matchpoint.
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//! These have explicit values matching the second digit of 'z' and 'Z'
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//! These have explicit values matching the second digit of 'z' and 'Z'
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//! packets.
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//! packets.
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enum MpType {
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enum MpType {
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WP_WRITE = 2,
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WP_WRITE = 2,
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WP_READ = 3,
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WP_READ = 3,
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WP_ACCESS = 4
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WP_ACCESS = 4
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};
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};
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class MpHash;
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class MpHash;
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//! A structure for a matchpoint hash table entry
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//! A structure for a matchpoint hash table entry
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struct MpEntry
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struct MpEntry {
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{
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public:
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public:
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friend class MpHash; // The only one which can get at next
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friend class MpHash; // The only one which can get at next
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MpType type; //!< Type of matchpoint
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MpType type; //!< Type of matchpoint
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uint32_t addr; //!< Address with the matchpoint
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uint32_t addr; //!< Address with the matchpoint
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uint32_t instr; //!< Substituted instruction
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uint32_t instr; //!< Substituted instruction
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private:
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private:
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MpEntry *next; //!< Next in this slot
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MpEntry *next; //!< Next in this slot
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};
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};
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//! A hash table for matchpoints
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//! A hash table for matchpoints
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//! We do this as our own open hash table. Our keys are a pair of entities
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//! We do this as our own open hash table. Our keys are a pair of entities
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//! (address and type), so STL map is not trivial to use.
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//! (address and type), so STL map is not trivial to use.
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class MpHash
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class MpHash {
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{
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public:
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public:
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// Constructor and destructor
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// Constructor and destructor
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MpHash (int _size = DEFAULT_MP_HASH_SIZE);
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MpHash (int _size = DEFAULT_MP_HASH_SIZE);
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~MpHash ();
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~MpHash ();
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// Accessor methods
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// Accessor methods
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void add (MpType type,
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void add(MpType type, uint32_t addr, uint32_t instr);
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uint32_t addr,
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MpEntry *lookup(MpType type, uint32_t addr);
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uint32_t instr);
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bool remove(MpType type, uint32_t addr, uint32_t * instr = NULL);
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MpEntry *lookup (MpType type,
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uint32_t addr);
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bool remove (MpType type,
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uint32_t addr,
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uint32_t *instr = NULL);
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private:
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private:
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//! The hash table
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//! The hash table
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MpEntry **hashTab;
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MpEntry **hashTab;
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