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kern: implement KUserPointer (and test with QueryMemory) in advance of svc dev

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This commit is contained in:
Michael Scire 2020-02-20 09:05:01 -08:00
commit efae01c165
17 changed files with 460 additions and 72 deletions
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23
libraries/libmesosphere/source/kern_k_page_table_base.cpp
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@ -765,6 +765,29 @@ namespace ams::kern {
return ResultSuccess();
}
Result KPageTableBase::QueryInfo(KMemoryInfo *out_info, ams::svc::PageInfo *out_page_info, KProcessAddress addr) const {
/* If the address is invalid, create a fake block. */
if (!this->Contains(addr, 1)) {
*out_info = {
.address = GetInteger(this->address_space_end),
.size = 0 - GetInteger(this->address_space_end),
.state = static_cast<KMemoryState>(ams::svc::MemoryState_Inaccessible),
.perm = KMemoryPermission_None,
.attribute = KMemoryAttribute_None,
.original_perm = KMemoryPermission_None,
.ipc_lock_count = 0,
.device_use_count = 0,
};
out_page_info->flags = 0;
return ResultSuccess();
}
/* Otherwise, lock the table and query. */
KScopedLightLock lk(this->general_lock);
return this->QueryInfoImpl(out_info, out_page_info, addr);
}
Result KPageTableBase::MapIo(KPhysicalAddress phys_addr, size_t size, KMemoryPermission perm) {
MESOSPHERE_ASSERT(util::IsAligned(GetInteger(phys_addr), PageSize));
MESOSPHERE_ASSERT(util::IsAligned(size, PageSize));