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k_page_table: add new CheckMemoryState helper

master
Liam 2023-10-11 10:50:44 +07:00
parent 794e6c7a96
commit 60a1c6b95b
2 changed files with 40 additions and 12 deletions
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45
src/core/hle/kernel/k_page_table.cpp
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@ -3280,21 +3280,16 @@ Result KPageTable::CheckMemoryStateContiguous(size_t* out_blocks_needed, KProces
Result KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermission* out_perm,
KMemoryAttribute* out_attr, size_t* out_blocks_needed,
KProcessAddress addr, size_t size, KMemoryState state_mask,
KMemoryBlockManager::const_iterator it,
KProcessAddress last_addr, KMemoryState state_mask,
KMemoryState state, KMemoryPermission perm_mask,
KMemoryPermission perm, KMemoryAttribute attr_mask,
KMemoryAttribute attr, KMemoryAttribute ignore_attr) const {
ASSERT(this->IsLockedByCurrentThread());
// Get information about the first block.
const KProcessAddress last_addr = addr + size - 1;
KMemoryBlockManager::const_iterator it = m_memory_block_manager.FindIterator(addr);
KMemoryInfo info = it->GetMemoryInfo();
// If the start address isn't aligned, we need a block.
const size_t blocks_for_start_align =
(Common::AlignDown(GetInteger(addr), PageSize) != info.GetAddress()) ? 1 : 0;
// Validate all blocks in the range have correct state.
const KMemoryState first_state = info.m_state;
const KMemoryPermission first_perm = info.m_permission;
@ -3320,10 +3315,6 @@ Result KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermission*
info = it->GetMemoryInfo();
}
// If the end address isn't aligned, we need a block.
const size_t blocks_for_end_align =
(Common::AlignUp(GetInteger(addr) + size, PageSize) != info.GetEndAddress()) ? 1 : 0;
// Write output state.
if (out_state != nullptr) {
*out_state = first_state;
@ -3334,9 +3325,39 @@ Result KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermission*
if (out_attr != nullptr) {
*out_attr = static_cast<KMemoryAttribute>(first_attr & ~ignore_attr);
}
// If the end address isn't aligned, we need a block.
if (out_blocks_needed != nullptr) {
*out_blocks_needed = blocks_for_start_align + blocks_for_end_align;
const size_t blocks_for_end_align =
(Common::AlignDown(GetInteger(last_addr), PageSize) + PageSize != info.GetEndAddress())
? 1
: 0;
*out_blocks_needed = blocks_for_end_align;
}
R_SUCCEED();
}
Result KPageTable::CheckMemoryState(KMemoryState* out_state, KMemoryPermission* out_perm,
KMemoryAttribute* out_attr, size_t* out_blocks_needed,
KProcessAddress addr, size_t size, KMemoryState state_mask,
KMemoryState state, KMemoryPermission perm_mask,
KMemoryPermission perm, KMemoryAttribute attr_mask,
KMemoryAttribute attr, KMemoryAttribute ignore_attr) const {
ASSERT(this->IsLockedByCurrentThread());
// Check memory state.
const KProcessAddress last_addr = addr + size - 1;
KMemoryBlockManager::const_iterator it = m_memory_block_manager.FindIterator(addr);
R_TRY(this->CheckMemoryState(out_state, out_perm, out_attr, out_blocks_needed, it, last_addr,
state_mask, state, perm_mask, perm, attr_mask, attr, ignore_attr));
// If the start address isn't aligned, we need a block.
if (out_blocks_needed != nullptr &&
Common::AlignDown(GetInteger(addr), PageSize) != it->GetAddress()) {
++(*out_blocks_needed);
}
R_SUCCEED();
}

7
src/core/hle/kernel/k_page_table.h
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@ -261,6 +261,13 @@ private:
Result CheckMemoryState(const KMemoryInfo& info, KMemoryState state_mask, KMemoryState state,
KMemoryPermission perm_mask, KMemoryPermission perm,
KMemoryAttribute attr_mask, KMemoryAttribute attr) const;
Result CheckMemoryState(KMemoryState* out_state, KMemoryPermission* out_perm,
KMemoryAttribute* out_attr, size_t* out_blocks_needed,
KMemoryBlockManager::const_iterator it, KProcessAddress last_addr,
KMemoryState state_mask, KMemoryState state,
KMemoryPermission perm_mask, KMemoryPermission perm,
KMemoryAttribute attr_mask, KMemoryAttribute attr,
KMemoryAttribute ignore_attr = DefaultMemoryIgnoreAttr) const;
Result CheckMemoryState(KMemoryState* out_state, KMemoryPermission* out_perm,
KMemoryAttribute* out_attr, size_t* out_blocks_needed,
KProcessAddress addr, size_t size, KMemoryState state_mask,