qemu-参数解析

启动命令：
gdb –args /usr/bin/bin/qemu-system-x86_64 linux-0.2.img -m 512 -enable-kvm -smp 1,sockets=1,cores=1,threads=1 -realtime mlock=off -device ivshmem,shm=ivshmem,size=1 -device ivshmem,shm=ivshmem1,size=2

解析后的数据结构如下：

struct QemuOptsList {
    const char *name;
    const char *implied_opt_name;
    bool merge_lists;  /* Merge multiple uses of option into a single list? */
    QTAILQ_HEAD(, QemuOpts) head;
    QemuOptDesc desc[];
};

struct QemuOpts {
    char *id;
    QemuOptsList *list;
    Location loc;
    QTAILQ_HEAD(, QemuOpt) head;
    QTAILQ_ENTRY(QemuOpts) next;
};


struct QemuOpt {
    char *name;
    char *str;

    const QemuOptDesc *desc;
    union {
        bool boolean;
        uint64_t uint;
    } value;

    QemuOpts     *opts;
    QTAILQ_ENTRY(QemuOpt) next;
};

主要api都在util/qemu-option.c 文件

参考： http://terenceli.github.io/%E6%8A%80%E6%9C%AF/2015/09/26/qemu-options