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kern: add InfoType_TransferMemoryHint

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This commit is contained in:
Michael Scire
2024-10-09 11:04:43 -07:00
parent 34e27ee97d
commit 483d06ac0e
3 changed files with 31 additions and 0 deletions
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16
libraries/libmesosphere/include/mesosphere/kern_k_transfer_memory.hpp
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@@ -48,6 +48,22 @@ namespace ams::kern {
KProcess *GetOwner() const { return m_owner; }
KProcessAddress GetSourceAddress() { return m_address; }
size_t GetSize() const { return m_is_initialized ? GetReference(m_page_group).GetNumPages() * PageSize : 0; }
constexpr uintptr_t GetHint() const {
/* Get memory size. */
const size_t size = this->GetSize();
/* TODO: Is this architecture specific? */
if (size >= 2_MB) {
return GetInteger(m_address) & (2_MB - 1);
} else if (size >= 64_KB) {
return GetInteger(m_address) & (64_KB - 1);
} else if (size >= 4_KB) {
return GetInteger(m_address) & (4_KB - 1);
} else {
return 0;
}
}
};
}