用JSON.stringify打印对象

既然console.log中无法直接（用%o去格式化）打印对象，那么可以考虑用JSON.stringify去转化为JSON再去打印：

举例：

console.log("instruction: address=" + instruction.address
    + ",next=" + instruction.next
    + ",size=" + instruction.size
    + ",mnemonic=" + instruction.mnemonic
    + ",opStr=" + instruction.opStr
    + ",operands=" + JSON.stringify(instruction.operands)
    + ",regsRead=" + JSON.stringify(instruction.regsRead)
    + ",regsWritten=" + JSON.stringify(instruction.regsWritten)
    + ",groups=" + JSON.stringify(instruction.groups)
    + ",toString()=" + instruction.toString()
);

输出效果：

instruction: address=0x1091dbcd8,next=0x4,size=4,mnemonic=b,opStr=#0x1091dbce8,operands=[{"type":"imm","value":"4447911144","access":"r"}],regsRead=[],regsWritten=[],groups=["jump","branch_relative"],toString()=b #0x1091dbce8
[0x1091dbcd8] b #0x1091dbce8
+++ into iterator=
instruction: address=0x1091dbce8,next=0x4,size=4,mnemonic=str,opStr=wzr, [x19, #0x90],operands=[{"type":"reg","value":"wzr","access":"r"},{"type":"mem","value":{"base":"x19","disp":144},"access":"rw"}],regsRead=[],regsWritten=[],groups=[],toString()=str wzr, [x19, #0x90]
[0x1091dbce8] str wzr, [x19, #0x90]