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Cheats: Invalidate code pages on memory writes

This commit is contained in:
Connor McLaughlin 2020-10-22 11:09:11 +10:00
parent 3fc9f264d7
commit 2b2e2f7854
1 changed files with 13 additions and 1 deletions
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14
src/core/cheats.cpp
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@ -5,6 +5,7 @@
#include "common/log.h"
#include "common/string.h"
#include "common/string_util.h"
#include "cpu_code_cache.h"
#include "cpu_core.h"
#include "host_interface.h"
#include <cctype>
@ -77,7 +78,18 @@ static void DoMemoryWrite(PhysicalMemoryAddress address, T value)
if (address < Bus::RAM_MIRROR_END)
{
std::memcpy(&Bus::g_ram[address & Bus::RAM_MASK], &value, sizeof(value));
// Only invalidate code when it changes.
T old_value;
std::memcpy(&old_value, &Bus::g_ram[address & Bus::RAM_MASK], sizeof(old_value));
if (old_value != value)
{
std::memcpy(&Bus::g_ram[address & Bus::RAM_MASK], &value, sizeof(value));
const u32 code_page_index = Bus::GetRAMCodePageIndex(address & Bus::RAM_MASK);
if (Bus::IsRAMCodePage(code_page_index))
CPU::CodeCache::InvalidateBlocksWithPageIndex(code_page_index);
}
return;
}
}