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CPU: Implement fixed dcache/scratchpad

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This commit is contained in:
Connor McLaughlin
2019-09-14 13:52:57 +10:00
parent ced3038e73
commit 0726095f00
2 changed files with 63 additions and 3 deletions
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13
src/pse/cpu_core.h
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@ -2,6 +2,7 @@
#include "common/bitfield.h"
#include "cpu_types.h"
#include "types.h"
#include <array>
class StateWrapper;
@ -12,7 +13,11 @@ namespace CPU {
class Core
{
public:
static constexpr VirtualMemoryAddress RESET_VECTOR = 0xbfc00000;
static constexpr VirtualMemoryAddress RESET_VECTOR = UINT32_C(0xBFC00000);
static constexpr PhysicalMemoryAddress DCACHE_LOCATION = UINT32_C(0x1F800000);
static constexpr PhysicalMemoryAddress DCACHE_LOCATION_MASK = UINT32_C(0xFFFFFC00);
static constexpr PhysicalMemoryAddress DCACHE_OFFSET_MASK = UINT32_C(0x000003FF);
static constexpr PhysicalMemoryAddress DCACHE_SIZE = UINT32_C(0x00000400);
Core();
~Core();
@ -40,6 +45,9 @@ private:
template<MemoryAccessType type, MemoryAccessSize size, bool is_instruction_fetch, bool raise_exceptions>
bool DoMemoryAccess(VirtualMemoryAddress address, u32& value);
template<MemoryAccessType type, MemoryAccessSize size>
void DoScratchpadAccess(PhysicalMemoryAddress address, u32& value);
u8 ReadMemoryByte(VirtualMemoryAddress addr);
u16 ReadMemoryHalfWord(VirtualMemoryAddress addr);
u32 ReadMemoryWord(VirtualMemoryAddress addr);
@ -88,6 +96,9 @@ private:
u32 m_cache_control = 0;
Cop0Registers m_cop0_regs = {};
// data cache (used as scratchpad)
std::array<u8, DCACHE_SIZE> m_dcache = {};
};
extern bool TRACE_EXECUTION;