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ppcmmu: Make dummy pages two pages.

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In case we need a write to span a page boundary.
This commit is contained in:
joevt 2024-04-24 06:29:22 -07:00 committed by dingusdev
parent 9a489d13f4
commit ad45ce8499
1 changed files with 3 additions and 3 deletions
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6
cpu/ppc/ppcmmu.cpp
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@ -82,6 +82,9 @@ AddressMapEntry last_write_area;
AddressMapEntry last_exec_area; AddressMapEntry last_exec_area;
AddressMapEntry last_ptab_area; AddressMapEntry last_ptab_area;
/** Dummy pages for catching writes to physical read-only pages */
static std::array<uint64_t, 8192 / sizeof(uint64_t)> dummy_page;
/** 601-style block address translation. */ /** 601-style block address translation. */
static BATResult mpc601_block_address_translation(uint32_t la) static BATResult mpc601_block_address_translation(uint32_t la)
{ {
@ -359,9 +362,6 @@ uint32_t tlb_size_mask = TLB_SIZE - 1;
uint64_t UnmappedVal = -1ULL; uint64_t UnmappedVal = -1ULL;
TLBEntry UnmappedMem = {TLB_INVALID_TAG, TLBFlags::PAGE_NOPHYS, 0, 0}; TLBEntry UnmappedMem = {TLB_INVALID_TAG, TLBFlags::PAGE_NOPHYS, 0, 0};
// Dummy page for catching writes to physical read-only pages
static std::array<uint64_t, 4096 / sizeof(uint64_t)> dummy_page;
uint8_t CurITLBMode = {0xFF}; // current ITLB mode uint8_t CurITLBMode = {0xFF}; // current ITLB mode
uint8_t CurDTLBMode = {0xFF}; // current DTLB mode uint8_t CurDTLBMode = {0xFF}; // current DTLB mode