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kern: fix incorrect cache routines, implement SvcSetProcessMemoryPermission

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This commit is contained in:
Michael Scire 2020-07-20 19:59:12 -07:00 • committed by SciresM
parent 26df56cd87
commit 4fca870f2f
4 changed files with 57 additions and 11 deletions
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38
libraries/libmesosphere/source/svc/kern_svc_process_memory.cpp
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@ -21,14 +21,48 @@ namespace ams::kern::svc {
namespace {
constexpr bool IsValidProcessMemoryPermission(ams::svc::MemoryPermission perm) {
switch (perm) {
case ams::svc::MemoryPermission_None:
case ams::svc::MemoryPermission_Read:
case ams::svc::MemoryPermission_ReadWrite:
case ams::svc::MemoryPermission_ReadExecute:
return true;
default:
return false;
}
}
Result SetProcessMemoryPermission(ams::svc::Handle process_handle, uint64_t address, uint64_t size, ams::svc::MemoryPermission perm) {
/* Validate the 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::ResultInvalidCurrentMemory());
R_UNLESS(address == static_cast<uintptr_t>(address), svc::ResultInvalidCurrentMemory());
R_UNLESS(size == static_cast<size_t>(size), svc::ResultInvalidCurrentMemory());
/* Validate the memory permission. */
R_UNLESS(IsValidProcessMemoryPermission(perm), svc::ResultInvalidNewMemoryPermission());
/* Get the process from its handle. */
KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle);
R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
/* Validate that the address is in range. */
auto &page_table = process->GetPageTable();
R_UNLESS(page_table.Contains(address, size), svc::ResultInvalidCurrentMemory());
/* Set the memory permission. */
return page_table.SetProcessMemoryPermission(address, size, perm);
}
}
/* ============================= 64 ABI ============================= */
Result SetProcessMemoryPermission64(ams::svc::Handle process_handle, uint64_t address, uint64_t size, ams::svc::MemoryPermission perm) {
MESOSPHERE_PANIC("Stubbed SvcSetProcessMemoryPermission64 was called.");
return SetProcessMemoryPermission(process_handle, address, size, perm);
}
Result MapProcessMemory64(ams::svc::Address dst_address, ams::svc::Handle process_handle, uint64_t src_address, ams::svc::Size size) {
@ -50,7 +84,7 @@ namespace ams::kern::svc {
/* ============================= 64From32 ABI ============================= */
Result SetProcessMemoryPermission64From32(ams::svc::Handle process_handle, uint64_t address, uint64_t size, ams::svc::MemoryPermission perm) {
MESOSPHERE_PANIC("Stubbed SvcSetProcessMemoryPermission64From32 was called.");
return SetProcessMemoryPermission(process_handle, address, size, perm);
}
Result MapProcessMemory64From32(ams::svc::Address dst_address, ams::svc::Handle process_handle, uint64_t src_address, ams::svc::Size size) {