125 lines
3.0 KiB
C++
125 lines
3.0 KiB
C++
#include <Common/MemoryManagement.h>
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#include <Project64-rsp-core/RSPInfo.h>
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#include <Project64-rsp-core/cpu/RSPRegisters.h>
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#include <Settings/Settings.h>
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#include <stdio.h>
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#include <string.h>
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enum
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{
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MaxMaps = 32
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};
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uint32_t NoOfMaps, MapsCRC[MaxMaps];
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uint32_t Table;
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uint8_t *RecompCode, *RecompCodeSecondary, *RecompPos, *JumpTables;
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void ** JumpTable;
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int AllocateMemory(void)
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{
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if (RecompCode == nullptr)
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{
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RecompCode = (uint8_t *)AllocateAddressSpace(0x00400004);
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RecompCode = (uint8_t *)CommitMemory(RecompCode, 0x00400000, MEM_EXECUTE_READWRITE);
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if (RecompCode == nullptr)
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{
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g_Notify->DisplayError("Not enough memory for RSP RecompCode!");
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return false;
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}
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}
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if (RecompCodeSecondary == nullptr)
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{
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RecompCodeSecondary = (uint8_t *)AllocateAddressSpace(0x00200004);
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RecompCodeSecondary = (uint8_t *)CommitMemory(RecompCodeSecondary, 0x00200000, MEM_EXECUTE_READWRITE);
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if (RecompCodeSecondary == nullptr)
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{
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g_Notify->DisplayError("Not enough memory for RSP RecompCode Secondary!");
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return false;
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}
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}
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if (JumpTables == nullptr)
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{
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JumpTables = (uint8_t *)AllocateAddressSpace(0x1000 * MaxMaps);
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JumpTables = (uint8_t *)CommitMemory(JumpTables, 0x1000 * MaxMaps, MEM_READWRITE);
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if (JumpTables == nullptr)
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{
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g_Notify->DisplayError("Not enough memory for jump table!");
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return false;
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}
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}
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JumpTable = (void **)JumpTables;
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RecompPos = RecompCode;
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NoOfMaps = 0;
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return true;
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}
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void FreeMemory(void)
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{
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FreeAddressSpace(RecompCode, 0x00400004);
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FreeAddressSpace(JumpTable, 0x1000 * MaxMaps);
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FreeAddressSpace(RecompCodeSecondary, 0x00200004);
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RecompCode = nullptr;
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JumpTables = nullptr;
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RecompCodeSecondary = nullptr;
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}
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void ResetJumpTables(void)
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{
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memset(JumpTables, 0, 0x1000 * MaxMaps);
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RecompPos = RecompCode;
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NoOfMaps = 0;
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}
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void SetJumpTable(uint32_t End)
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{
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uint32_t CRC, count;
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CRC = 0;
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if (End < 0x800)
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{
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End = 0x800;
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}
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if (End == 0x1000 && ((*RSPInfo.SP_MEM_ADDR_REG & 0x0FFF) & ~7) == 0x80)
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{
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End = 0x800;
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}
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for (count = 0; count < End; count += 0x40)
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{
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CRC += *(uint32_t *)(RSPInfo.IMEM + count);
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}
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for (count = 0; count < NoOfMaps; count++)
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{
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if (CRC == MapsCRC[count])
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{
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JumpTable = (void **)(JumpTables + count * 0x1000);
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Table = count;
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return;
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}
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}
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//DisplayError("%X %X",NoOfMaps,CRC);
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if (NoOfMaps == MaxMaps)
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{
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ResetJumpTables();
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}
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MapsCRC[NoOfMaps] = CRC;
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JumpTable = (void **)(JumpTables + NoOfMaps * 0x1000);
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Table = NoOfMaps;
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NoOfMaps += 1;
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}
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void RSP_LW_IMEM(uint32_t Addr, uint32_t * Value)
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{
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if ((Addr & 0x3) != 0)
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{
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g_Notify->DisplayError("Unaligned RSP_LW_IMEM");
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}
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*Value = *(uint32_t *)(RSPInfo.IMEM + (Addr & 0xFFF));
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} |