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Bus: Protect main RAM buffer

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Get rid of write-time checks.
This commit is contained in:
Stenzek
2023-10-07 18:10:09 +10:00
parent 79e1ae3e54
commit a062b00c1a
12 changed files with 82 additions and 99 deletions
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14
src/core/bus.h
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@ -96,10 +96,7 @@ enum : u32
FASTMEM_LUT_PAGE_SIZE = 4096,
FASTMEM_LUT_PAGE_MASK = FASTMEM_LUT_PAGE_SIZE - 1,
FASTMEM_LUT_PAGE_SHIFT = 12,
FASTMEM_LUT_PAGES_PER_CODE_PAGE = HOST_PAGE_SIZE / FASTMEM_LUT_PAGE_SIZE,
FASTMEM_LUT_NUM_PAGES = 0x100000, // 0x100000000 >> 12
FASTMEM_LUT_NUM_SLOTS = FASTMEM_LUT_NUM_PAGES * 2,
FASTMEM_LUT_SIZE = 0x100000, // 0x100000000 >> 12
};
#ifdef ENABLE_MMAP_FASTMEM
@ -135,10 +132,11 @@ bool CanUseFastmemForAddress(VirtualMemoryAddress address);
void SetExpansionROM(std::vector<u8> data);
extern std::bitset<RAM_8MB_CODE_PAGE_COUNT> g_ram_code_bits;
extern u8* g_ram; // 2MB-8MB RAM
extern u32 g_ram_size; // Active size of RAM.
extern u32 g_ram_mask; // Active address bits for RAM.
extern u8* g_bios; // 512K BIOS ROM
extern u8* g_ram; // 2MB-8MB RAM
extern u8* g_unprotected_ram; // RAM without page protection, use for debugger access.
extern u32 g_ram_size; // Active size of RAM.
extern u32 g_ram_mask; // Active address bits for RAM.
extern u8* g_bios; // 512K BIOS ROM
extern std::array<TickCount, 3> g_exp1_access_time;
extern std::array<TickCount, 3> g_exp2_access_time;
extern std::array<TickCount, 3> g_bios_access_time;