nstool/lib/nx/SystemCallHandler.cpp

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#include "SystemCallHandler.h"
#include "SystemCallEntry.h"
nx::SystemCallHandler::SystemCallHandler() :
mIsSet(false),
mSystemCalls()
{}
bool nx::SystemCallHandler::operator==(const SystemCallHandler & other) const
{
return isEqual(other);
}
bool nx::SystemCallHandler::operator!=(const SystemCallHandler & other) const
{
return !isEqual(other);
}
void nx::SystemCallHandler::operator=(const SystemCallHandler & other)
{
copyFrom(other);
}
void nx::SystemCallHandler::importKernelCapabilityList(const fnd::List<KernelCapability>& caps)
{
SystemCallEntry entry;
u8 syscallUpper, syscall;
for (size_t i = 0; i < caps.getSize(); i++)
{
entry.setKernelCapability(caps[i]);
syscallUpper = 24 * entry.getSystemCallUpperBits();
for (u8 j = 0; j < 24; j++)
{
syscall = syscallUpper + j;
if (((entry.getSystemCallLowerBits() >> j) & 1) == 1)
{
mSystemCalls.hasElement(syscall) == false ? mSystemCalls.addElement(syscall) : throw fnd::Exception(kModuleName, "SystemCall already added");
}
}
}
mIsSet = true;
}
void nx::SystemCallHandler::exportKernelCapabilityList(fnd::List<KernelCapability>& caps) const
{
if (isSet() == false)
return;
fnd::List<SystemCallEntry> entries;
for (size_t i = 0; i < kSyscallTotalEntryNum; i++)
{
entries[i].setSystemCallUpperBits(i);
entries[i].setSystemCallLowerBits(0);
}
for (size_t i = 0; i < mSystemCalls.getSize(); i++)
{
if (mSystemCalls[i] > kMaxSystemCall)
{
throw fnd::Exception(kModuleName, "Illegal SystemCall. (range: 0x00-0xBF inclusive)");
}
entries[mSystemCalls[i] / 24].setSystemCallLowerBits(entries[mSystemCalls[i] / 24].getSystemCallLowerBits() | BIT(mSystemCalls[i] % 24));
}
for (size_t i = 0; i < entries.getSize(); i++)
{
if (entries[i].getSystemCallLowerBits() != 0)
{
caps.addElement(entries[i].getKernelCapability());
}
}
}
void nx::SystemCallHandler::clear()
{
mIsSet = false;
mSystemCalls.clear();
}
bool nx::SystemCallHandler::isSet() const
{
return mIsSet;
}
const fnd::List<u8>& nx::SystemCallHandler::getSystemCalls() const
{
return mSystemCalls;
}
void nx::SystemCallHandler::setSystemCalls(const fnd::List<u8>& calls)
{
mSystemCalls.clear();
for (size_t i = 0; i < calls.getSize(); i++)
{
if (mSystemCalls[i] > kMaxSystemCall)
{
throw fnd::Exception(kModuleName, "Illegal SystemCall. (range: 0x00-0xBF inclusive)");
}
mSystemCalls.hasElement(calls[i]) == false ? mSystemCalls.addElement(calls[i]) : throw fnd::Exception(kModuleName, "SystemCall already added");
}
mIsSet = true;
}
void nx::SystemCallHandler::copyFrom(const SystemCallHandler & other)
{
mIsSet = other.mIsSet;
mSystemCalls = other.mSystemCalls;
}
bool nx::SystemCallHandler::isEqual(const SystemCallHandler & other) const
{
return (mIsSet == other.mIsSet) \
&& (mSystemCalls == other.mSystemCalls);
}