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kern: implement SvcMapPhysicalMemory

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This commit is contained in:
Michael Scire
2020-07-24 08:07:34 -07:00
committed by SciresM
parent 695b82b945
commit 5ecc80a5f6
11 changed files with 559 additions and 13 deletions
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52
libraries/libmesosphere/source/svc/kern_svc_physical_memory.cpp
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@@ -22,6 +22,8 @@ namespace ams::kern::svc {
namespace {
Result SetHeapSize(uintptr_t *out_address, size_t size) {
MESOSPHERE_LOG("%s: SetHeapSize(%012zx)\n", GetCurrentProcess().GetName(), size);
/* Validate size. */
R_UNLESS(util::IsAligned(size, ams::svc::HeapSizeAlignment), svc::ResultInvalidSize());
R_UNLESS(size < ams::kern::MainMemorySize, svc::ResultInvalidSize());
@@ -46,6 +48,48 @@ namespace ams::kern::svc {
return Kernel::GetUnsafeMemory().SetLimitSize(limit);
}
Result MapPhysicalMemory(uintptr_t address, size_t size) {
/* Validate address / size. */
R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidMemoryRegion());
/* Verify that the process has system resource. */
auto &process = GetCurrentProcess();
R_UNLESS(process.GetTotalSystemResourceSize() > 0, svc::ResultInvalidState());
/* Verify that the region is in range. */
auto &page_table = process.GetPageTable();
R_UNLESS(page_table.IsInAliasRegion(address, size), svc::ResultInvalidMemoryRegion());
/* Map the memory. */
R_TRY(page_table.MapPhysicalMemory(address, size));
return ResultSuccess();
}
Result UnmapPhysicalMemory(uintptr_t address, size_t size) {
/* Validate address / size. */
R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidMemoryRegion());
/* Verify that the process has system resource. */
auto &process = GetCurrentProcess();
R_UNLESS(process.GetTotalSystemResourceSize() > 0, svc::ResultInvalidState());
/* Verify that the region is in range. */
auto &page_table = process.GetPageTable();
R_UNLESS(page_table.IsInAliasRegion(address, size), svc::ResultInvalidMemoryRegion());
/* Unmap the memory. */
R_TRY(page_table.UnmapPhysicalMemory(address, size));
return ResultSuccess();
}
}
/* ============================= 64 ABI ============================= */
@@ -56,11 +100,11 @@ namespace ams::kern::svc {
}
Result MapPhysicalMemory64(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcMapPhysicalMemory64 was called.");
return MapPhysicalMemory(address, size);
}
Result UnmapPhysicalMemory64(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcUnmapPhysicalMemory64 was called.");
return UnmapPhysicalMemory(address, size);
}
Result MapPhysicalMemoryUnsafe64(ams::svc::Address address, ams::svc::Size size) {
@@ -83,11 +127,11 @@ namespace ams::kern::svc {
}
Result MapPhysicalMemory64From32(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcMapPhysicalMemory64From32 was called.");
return MapPhysicalMemory(address, size);
}
Result UnmapPhysicalMemory64From32(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcUnmapPhysicalMemory64From32 was called.");
return UnmapPhysicalMemory(address, size);
}
Result MapPhysicalMemoryUnsafe64From32(ams::svc::Address address, ams::svc::Size size) {