Function VFPExpandImm

arch/arm64/disassembler/pcode.c:709–734

from LLVM TODO: check license, determine if rewrite needed

// from LLVM
// TODO: check license, determine if rewrite needed
uint64_t VFPExpandImm(unsigned char byte, unsigned N)
{
	// assert(N == 32 || N == 64);

	uint64_t Result;
	unsigned bit6 = SLICE(byte, 6, 6);
	if (N == 32)
	{
		Result = SLICE(byte, 7, 7) << 31 | SLICE(byte, 5, 0) << 19;
		if (bit6)
			Result |= 0x1f << 25;
		else
			Result |= 0x1 << 30;
	}
	else
	{
		Result = (uint64_t)SLICE(byte, 7, 7) << 63 | (uint64_t)SLICE(byte, 5, 0) << 48;
		if (bit6)
			Result |= 0xffULL << 54;
		else
			Result |= 0x1ULL << 62;
	}

	// return APInt(N, Result);
	return Result;
}

bool EL2Enabled(void)
{