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exo2: implement SmcGetConfig

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This commit is contained in:
Michael Scire 2020-05-15 02:32:17 -07:00 • committed by SciresM
parent e3eadcd2e3
commit 6bf283ec2e
15 changed files with 640 additions and 45 deletions
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18
exosphere2/program/source/smc/secmon_smc_register_access.cpp
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@ -24,9 +24,7 @@ namespace ams::secmon::smc {
template<size_t N>
constexpr void SetRegisterTableAllowed(std::array<u8, N> &arr, uintptr_t reg) {
/* All registers should be four byte aligned. */
if (reg % sizeof(u32) != 0) {
__builtin_unreachable();
}
AMS_ASSUME(reg % sizeof(u32) == 0);
/* Reduce the register to an index. */
reg /= sizeof(u32);
@ -36,24 +34,18 @@ namespace ams::secmon::smc {
const auto mask = (1u << (reg % BITSIZEOF(u8)));
/* Check that the permission bit isn't already set. */
if ((arr[index] & mask) != 0) {
__builtin_unreachable();
}
AMS_ASSUME((arr[index] & mask) == 0);
/* Set the permission bit. */
arr[index] |= mask;
/* Ensure that indices are set in sorted order. */
for (auto i = (reg % BITSIZEOF(u8)) + 1; i < 8; ++i) {
if ((arr[index] & (1u << i)) != 0) {
__builtin_unreachable();
}
AMS_ASSUME((arr[index] & (1u << i)) == 0);
}
for (auto i = index + 1; i < arr.size(); ++i) {
if (arr[i] != 0) {
__builtin_unreachable();
}
AMS_ASSUME(arr[i] == 0);
}
}
@ -72,7 +64,7 @@ namespace ams::secmon::smc {
}
/* All empty perm table is disallowed. */
__builtin_unreachable();
AMS_ASSUME(false);
}