mirror of
https://github.com/RetroDECK/Supermodel.git
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123 lines
2.8 KiB
C++
123 lines
2.8 KiB
C++
#ifdef SUPERMODEL_DEBUGGER
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#include "AddressTable.h"
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#include <string.h>
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namespace Debugger
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{
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CAddressRef::CAddressRef(CCPUDebug *refCPU, UINT32 refAddr, UINT32 refSize) :
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cpu(refCPU), addr(refAddr), size(refSize), addrEnd(refAddr + refSize - 1)
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{
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//
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}
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CAddressTable::CAddressTable() : m_count(0)
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{
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memset(m_tables, NULL, sizeof(m_tables));
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}
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CAddressTable::~CAddressTable()
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{
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Clear();
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}
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CAddressRef **CAddressTable::GetTableCreate(UINT32 addr, int &tableIndex, unsigned &indexInTable)
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{
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// Convert address to table index
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tableIndex = addr >> INDEX_SHIFT;
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// See if have a table at index
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if (m_tables[tableIndex] == NULL)
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{
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// If not, create one now and increase count
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m_tables[tableIndex] = new CAddressRef*[TABLE_SIZE];
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memset(m_tables[tableIndex], NULL, sizeof(CAddressRef*) * TABLE_SIZE);
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m_count++;
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}
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// Calculate index within table
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indexInTable = addr & TABLE_MASK;
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return m_tables[tableIndex];
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}
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void CAddressTable::CheckAndReleaseTable(int tableIndex)
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{
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// See if have table at give index
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CAddressRef **table = m_tables[tableIndex];
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if (table == NULL)
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return;
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// If so, check if it is empty
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for (int i = 0; i < TABLE_SIZE; i++)
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{
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if (table[i] != NULL)
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return;
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}
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// If so, delete it and decrease count
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delete[] table;
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m_tables[tableIndex] = NULL;
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m_count--;
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}
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bool CAddressTable::IsEmpty()
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{
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return m_count == 0;
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}
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void CAddressTable::Clear()
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{
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if (m_count == 0)
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return;
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// Delete all tables and reset count
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for (int i = 0; i < NUM_TABLES; i++)
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{
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if (m_tables[i] != NULL)
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{
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delete[] m_tables[i];
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m_tables[i] = NULL;
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}
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}
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m_count = 0;
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}
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void CAddressTable::Add(CAddressRef *value)
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{
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int tableIndex;
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unsigned indexInTable;
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CAddressRef **table = GetTableCreate(value->addr, tableIndex, indexInTable);
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for (UINT32 i = 0; i < value->size; i++)
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{
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table[indexInTable] = value;
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if (indexInTable >= TABLE_SIZE - 1)
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table = GetTableCreate(value->addr + i, tableIndex, indexInTable);
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else
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indexInTable++;
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}
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}
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bool CAddressTable::Remove(CAddressRef *value)
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{
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int tableIndex;
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unsigned indexInTable;
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CAddressRef **table = GetTableNoCreate(value->addr, tableIndex, indexInTable);
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bool removed = false;
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for (UINT32 i = 0; i < value->size; i++)
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{
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if (table != NULL)
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{
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removed |= table[indexInTable] != NULL;
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table[indexInTable] = NULL;
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}
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if (indexInTable >= TABLE_SIZE - 1)
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{
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CheckAndReleaseTable(tableIndex);
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table = GetTableNoCreate(value->addr + i, tableIndex, indexInTable);
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}
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else
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indexInTable++;
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}
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CheckAndReleaseTable(tableIndex);
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return removed;
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}
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}
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#endif // SUPERMODEL_DEBUGGER
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