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kernel/process_capability: Handle syscall capability flags

This commit is contained in:
Lioncash 2018-12-20 22:54:05 -05:00
parent 27caf71204
commit 3dc59b74ec
2 changed files with 29 additions and 1 deletions

View file

@ -239,7 +239,30 @@ ResultCode ProcessCapabilities::HandlePriorityCoreNumFlags(u32 flags) {
}
ResultCode ProcessCapabilities::HandleSyscallFlags(u32& set_svc_bits, u32 flags) {
// TODO: Implement
const u32 index = flags >> 29;
const u32 svc_bit = 1U << index;
// If we've already set this svc before, bail.
if ((set_svc_bits & svc_bit) != 0) {
return ERR_INVALID_COMBINATION;
}
set_svc_bits |= svc_bit;
const u32 svc_mask = (flags >> 5) & 0xFFFFFF;
for (u32 i = 0; i < 24; ++i) {
const u32 svc_number = index * 24 + i;
if ((svc_mask & (1U << i)) == 0) {
continue;
}
if (svc_number >= svc_capabilities.size()) {
return ERR_OUT_OF_RANGE;
}
svc_capabilities[svc_number] = true;
}
return RESULT_SUCCESS;
}

View file

@ -132,6 +132,11 @@ public:
return priority_mask;
}
/// Gets the SVC access permission bits
const SyscallCapabilities& GetServiceCapabilities() const {
return svc_capabilities;
}
private:
/// Attempts to parse a given sequence of capability descriptors.
///