Function MCInst_handleWriteback

MCInst.c:225–250

Checks if tied operands exist in the instruction and sets - The writeback flag in detail - Saves the indices of the tied destination operands.

/// - The writeback flag in detail
/// - Saves the indices of the tied destination operands.
void MCInst_handleWriteback(MCInst *MI, const MCInstrDesc *InstDesc)
{
	const MCOperandInfo *OpInfo = InstDesc[MCInst_getOpcode(MI)].OpInfo;
	unsigned short NumOps = InstDesc[MCInst_getOpcode(MI)].NumOperands;

	unsigned i;
	for (i = 0; i < NumOps; ++i) {
		if (MCOperandInfo_isTiedToOp(&OpInfo[i])) {
			int idx = MCOperandInfo_getOperandConstraint(
				&InstDesc[MCInst_getOpcode(MI)], i,
				MCOI_TIED_TO);

			if (idx == -1)
				continue;

			if (i >= MAX_MC_OPS) {
				assert(0 &&
				       "Maximum number of MC operands reached.");
			}
			MI->tied_op_idx[i] = idx;

			if (MI->flat_insn->detail)
				MI->flat_insn->detail->writeback = true;
		}
	}
}

/// Check if operand with OpNum is tied by another operand
/// (operand is tying destination).