Examples with RegisterSpecList com.taobao.android.dx.rop.code.RegisterSpecList used on opensource projects

Example 6 with RegisterSpecList

use of com.taobao.android.dx.rop.code.RegisterSpecList in project atlas by alibaba.

the class Form21c method compatibleRegs.

/** {@inheritDoc} */
@Override
public BitSet compatibleRegs(DalvInsn insn) {
    RegisterSpecList regs = insn.getRegisters();
    int sz = regs.size();
    BitSet bits = new BitSet(sz);
    boolean compat = unsignedFitsInByte(regs.get(0).getReg());
    if (sz == 1) {
        bits.set(0, compat);
    } else {
        if (regs.get(0).getReg() == regs.get(1).getReg()) {
            bits.set(0, compat);
            bits.set(1, compat);
        }
    }
    return bits;
}

Example 7 with RegisterSpecList

use of com.taobao.android.dx.rop.code.RegisterSpecList in project atlas by alibaba.

the class DalvInsn method expandedPrefix.

/**
     * Gets the instruction prefix required, if any, to use in an expanded
     * version of this instance. Will not generate moves for registers
     * marked compatible to the format by the given BitSet.
     *
     * @see #expandedVersion
     *
     * @param compatRegs {@code non-null;} set of compatible registers
     * @return {@code null-ok;} the prefix, if any
     */
public DalvInsn expandedPrefix(BitSet compatRegs) {
    RegisterSpecList regs = registers;
    boolean firstBit = compatRegs.get(0);
    if (hasResult())
        compatRegs.set(0);
    regs = regs.subset(compatRegs);
    if (hasResult())
        compatRegs.set(0, firstBit);
    if (regs.size() == 0)
        return null;
    return new HighRegisterPrefix(position, regs);
}

Example 8 with RegisterSpecList

use of com.taobao.android.dx.rop.code.RegisterSpecList in project atlas by alibaba.

the class Form21c method isCompatible.

/** {@inheritDoc} */
@Override
public boolean isCompatible(DalvInsn insn) {
    if (!(insn instanceof CstInsn)) {
        return false;
    }
    RegisterSpecList regs = insn.getRegisters();
    RegisterSpec reg;
    switch(regs.size()) {
        case 1:
            {
                reg = regs.get(0);
                break;
            }
        case 2:
            {
                /*
                 * This format is allowed for ops that are effectively
                 * 2-arg but where the two args are identical.
                 */
                reg = regs.get(0);
                if (reg.getReg() != regs.get(1).getReg()) {
                    return false;
                }
                break;
            }
        default:
            {
                return false;
            }
    }
    if (!unsignedFitsInByte(reg.getReg())) {
        return false;
    }
    CstInsn ci = (CstInsn) insn;
    int cpi = ci.getIndex();
    Constant cst = ci.getConstant();
    if (!unsignedFitsInShort(cpi)) {
        return false;
    }
    return (cst instanceof CstType) || (cst instanceof CstFieldRef) || (cst instanceof CstString);
}

Example 9 with RegisterSpecList

use of com.taobao.android.dx.rop.code.RegisterSpecList in project atlas by alibaba.

the class Form21h method compatibleRegs.

/** {@inheritDoc} */
@Override
public BitSet compatibleRegs(DalvInsn insn) {
    RegisterSpecList regs = insn.getRegisters();
    BitSet bits = new BitSet(1);
    bits.set(0, unsignedFitsInByte(regs.get(0).getReg()));
    return bits;
}

Example 10 with RegisterSpecList

use of com.taobao.android.dx.rop.code.RegisterSpecList in project atlas by alibaba.

the class Form21h method isCompatible.

/** {@inheritDoc} */
@Override
public boolean isCompatible(DalvInsn insn) {
    RegisterSpecList regs = insn.getRegisters();
    if (!((insn instanceof CstInsn) && (regs.size() == 1) && unsignedFitsInByte(regs.get(0).getReg()))) {
        return false;
    }
    CstInsn ci = (CstInsn) insn;
    Constant cst = ci.getConstant();
    if (!(cst instanceof CstLiteralBits)) {
        return false;
    }
    CstLiteralBits cb = (CstLiteralBits) cst;
    // Where the high bits are depends on the category of the target.
    if (regs.get(0).getCategory() == 1) {
        int bits = cb.getIntBits();
        return ((bits & 0xffff) == 0);
    } else {
        long bits = cb.getLongBits();
        return ((bits & 0xffffffffffffL) == 0);
    }
}