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kern: SvcMapProcessCodeMemory, SvcUnmapProcessCodeMemory

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This commit is contained in:
Michael Scire
2020-07-23 17:22:27 -07:00
committed by SciresM
parent 240e6227e9
commit 11d5353827
5 changed files with 267 additions and 4 deletions
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62
libraries/libmesosphere/source/svc/kern_svc_process_memory.cpp
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@@ -141,6 +141,60 @@ namespace ams::kern::svc {
return ResultSuccess();
}
Result MapProcessCodeMemory(ams::svc::Handle process_handle, uint64_t dst_address, uint64_t src_address, uint64_t size) {
/* Validate the address/size. */
R_UNLESS(util::IsAligned(dst_address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(src_address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((dst_address < dst_address + size), svc::ResultInvalidCurrentMemory());
R_UNLESS((src_address < src_address + size), svc::ResultInvalidCurrentMemory());
R_UNLESS(src_address == static_cast<uintptr_t>(src_address), svc::ResultInvalidCurrentMemory());
R_UNLESS(dst_address == static_cast<uintptr_t>(dst_address), svc::ResultInvalidCurrentMemory());
R_UNLESS(size == static_cast<size_t>(size), svc::ResultInvalidCurrentMemory());
/* Get the process from its handle. */
KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObjectWithoutPseudoHandle<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
/* Validate that the mapping is in range. */
auto &page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(src_address, size), svc::ResultInvalidCurrentMemory());
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_AliasCode), svc::ResultInvalidCurrentMemory());
/* Map the memory. */
R_TRY(page_table.MapCodeMemory(dst_address, src_address, size));
return ResultSuccess();
}
Result UnmapProcessCodeMemory(ams::svc::Handle process_handle, uint64_t dst_address, uint64_t src_address, uint64_t size) {
/* Validate the address/size. */
R_UNLESS(util::IsAligned(dst_address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(src_address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((dst_address < dst_address + size), svc::ResultInvalidCurrentMemory());
R_UNLESS((src_address < src_address + size), svc::ResultInvalidCurrentMemory());
R_UNLESS(src_address == static_cast<uintptr_t>(src_address), svc::ResultInvalidCurrentMemory());
R_UNLESS(dst_address == static_cast<uintptr_t>(dst_address), svc::ResultInvalidCurrentMemory());
R_UNLESS(size == static_cast<size_t>(size), svc::ResultInvalidCurrentMemory());
/* Get the process from its handle. */
KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObjectWithoutPseudoHandle<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
/* Validate that the mapping is in range. */
auto &page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(src_address, size), svc::ResultInvalidCurrentMemory());
R_UNLESS(page_table.CanContain(dst_address, size, KMemoryState_AliasCode), svc::ResultInvalidCurrentMemory());
/* Unmap the memory. */
R_TRY(page_table.UnmapCodeMemory(dst_address, src_address, size));
return ResultSuccess();
}
}
/* ============================= 64 ABI ============================= */
@@ -158,11 +212,11 @@ namespace ams::kern::svc {
}
Result MapProcessCodeMemory64(ams::svc::Handle process_handle, uint64_t dst_address, uint64_t src_address, uint64_t size) {
MESOSPHERE_PANIC("Stubbed SvcMapProcessCodeMemory64 was called.");
return MapProcessCodeMemory(process_handle, dst_address, src_address, size);
}
Result UnmapProcessCodeMemory64(ams::svc::Handle process_handle, uint64_t dst_address, uint64_t src_address, uint64_t size) {
MESOSPHERE_PANIC("Stubbed SvcUnmapProcessCodeMemory64 was called.");
return UnmapProcessCodeMemory(process_handle, dst_address, src_address, size);
}
/* ============================= 64From32 ABI ============================= */
@@ -180,11 +234,11 @@ namespace ams::kern::svc {
}
Result MapProcessCodeMemory64From32(ams::svc::Handle process_handle, uint64_t dst_address, uint64_t src_address, uint64_t size) {
MESOSPHERE_PANIC("Stubbed SvcMapProcessCodeMemory64From32 was called.");
return MapProcessCodeMemory(process_handle, dst_address, src_address, size);
}
Result UnmapProcessCodeMemory64From32(ams::svc::Handle process_handle, uint64_t dst_address, uint64_t src_address, uint64_t size) {
MESOSPHERE_PANIC("Stubbed SvcUnmapProcessCodeMemory64From32 was called.");
return UnmapProcessCodeMemory(process_handle, dst_address, src_address, size);
}
}