Archipelago » qemu

#include "qdev.h"

void *qdev_get_prop_ptr(DeviceState *dev, Property *prop)

{

    void *ptr = dev;

    ptr += prop->offset;

    return ptr;

}

/* --- 16bit integer --- */

static int parse_uint16(DeviceState *dev, Property *prop, const char *str)

{

    uint16_t *ptr = qdev_get_prop_ptr(dev, prop);

    const char *fmt;

    /* accept both hex and decimal */

    fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx16 : "%" PRIu16;

    if (sscanf(str, fmt, ptr) != 1)

        return -1;

    return 0;

}

static int print_uint16(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint16_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRIu16, *ptr);

}

PropertyInfo qdev_prop_uint16 = {

    .name  = "uint16",

    .type  = PROP_TYPE_UINT16,

    .size  = sizeof(uint16_t),

    .parse = parse_uint16,

    .print = print_uint16,

};

/* --- 32bit integer --- */

static int parse_uint32(DeviceState *dev, Property *prop, const char *str)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    const char *fmt;

    /* accept both hex and decimal */

    fmt = strncasecmp(str, "0x",2) == 0 ? "%" PRIx32 : "%" PRIu32;

    if (sscanf(str, fmt, ptr) != 1)

        return -1;

    return 0;

}

static int print_uint32(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%" PRIu32, *ptr);

}

PropertyInfo qdev_prop_uint32 = {

    .name  = "uint32",

    .type  = PROP_TYPE_UINT32,

    .size  = sizeof(uint32_t),

    .parse = parse_uint32,

    .print = print_uint32,

};

/* --- 32bit hex value --- */

static int parse_hex32(DeviceState *dev, Property *prop, const char *str)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    if (sscanf(str, "%" PRIx32, ptr) != 1)

        return -1;

    return 0;

}

static int print_hex32(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "0x%" PRIx32, *ptr);

}

PropertyInfo qdev_prop_hex32 = {

    .name  = "hex32",

    .type  = PROP_TYPE_UINT32,

    .size  = sizeof(uint32_t),

    .parse = parse_hex32,

    .print = print_hex32,

};

/* --- pointer --- */

static int print_ptr(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    void **ptr = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "<%p>", *ptr);

}

PropertyInfo qdev_prop_ptr = {

    .name  = "ptr",

    .type  = PROP_TYPE_PTR,

    .size  = sizeof(void*),

    .print = print_ptr,

};

/* --- mac address --- */

/*

 * accepted syntax versions:

 *   01:02:03:04:05:06

 *   01-02-03-04-05-06

 */

static int parse_mac(DeviceState *dev, Property *prop, const char *str)

{

    uint8_t *mac = qdev_get_prop_ptr(dev, prop);

    int i, pos;

    char *p;

    for (i = 0, pos = 0; i < 6; i++, pos += 3) {

        if (!isxdigit(str[pos]))

            return -1;

        if (!isxdigit(str[pos+1]))

            return -1;

        if (i == 5 && str[pos+2] != '\0')

            return -1;

        if (str[pos+2] != ':' && str[pos+2] != '-')

            return -1;

        mac[i] = strtol(str+pos, &p, 16);

    }

    return 0;

}

static int print_mac(DeviceState *dev, Property *prop, char *dest, size_t len)

{

    uint8_t *mac = qdev_get_prop_ptr(dev, prop);

    return snprintf(dest, len, "%02x:%02x:%02x:%02x:%02x:%02x",

                    mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);

}

PropertyInfo qdev_prop_macaddr = {

    .name  = "mac-addr",

    .type  = PROP_TYPE_MACADDR,

    .size  = 6,

    .parse = parse_mac,

    .print = print_mac,

};

/* --- public helpers --- */

static Property *qdev_prop_walk(Property *props, const char *name)

{

    if (!props)

        return NULL;

    while (props->name) {

        if (strcmp(props->name, name) == 0)

            return props;

        props++;

    }

    return NULL;

}

static Property *qdev_prop_find(DeviceState *dev, const char *name)

{

    Property *prop;

    /* device properties */

    prop = qdev_prop_walk(dev->info->props, name);

    if (prop)

        return prop;

    /* bus properties */

    prop = qdev_prop_walk(dev->parent_bus->info->props, name);

    if (prop)

        return prop;

    return NULL;

}

int qdev_prop_parse(DeviceState *dev, const char *name, const char *value)

{

    Property *prop;

    prop = qdev_prop_find(dev, name);

    if (!prop) {

        fprintf(stderr, "property \"%s.%s\" not found\n",

                dev->info->name, name);

        return -1;

    }

    if (!prop->info->parse) {

        fprintf(stderr, "property \"%s.%s\" has no parser\n",

                dev->info->name, name);

        return -1;

    }

    return prop->info->parse(dev, prop, value);

}

void qdev_prop_set(DeviceState *dev, const char *name, void *src, enum PropertyType type)

{

    Property *prop;

    void *dst;

    prop = qdev_prop_find(dev, name);

    if (!prop) {

        fprintf(stderr, "%s: property \"%s.%s\" not found\n",

                __FUNCTION__, dev->info->name, name);

        abort();

    }

    if (prop->info->type != type) {

        fprintf(stderr, "%s: property \"%s.%s\" type mismatch\n",

                __FUNCTION__, dev->info->name, name);

        abort();

    }

    dst = qdev_get_prop_ptr(dev, prop);

    memcpy(dst, src, prop->info->size);

}

void qdev_prop_set_uint16(DeviceState *dev, const char *name, uint16_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_UINT16);

}

void qdev_prop_set_uint32(DeviceState *dev, const char *name, uint32_t value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_UINT32);

}

void qdev_prop_set_ptr(DeviceState *dev, const char *name, void *value)

{

    qdev_prop_set(dev, name, &value, PROP_TYPE_PTR);

}

void qdev_prop_set_defaults(DeviceState *dev, Property *props)

{

    char *dst;

    if (!props)

        return;

    while (props->name) {

        if (props->defval) {

            dst = qdev_get_prop_ptr(dev, props);

            memcpy(dst, props->defval, props->info->size);

        }

        props++;

    }

}

static CompatProperty *compat_props;

void qdev_prop_register_compat(CompatProperty *props)

{

    compat_props = props;

}

void qdev_prop_set_compat(DeviceState *dev)

{

    CompatProperty *prop;

    if (!compat_props) {

        return;

    }

    for (prop = compat_props; prop->driver != NULL; prop++) {

        if (strcmp(dev->info->name, prop->driver) != 0) {

            continue;

        }

        if (qdev_prop_parse(dev, prop->property, prop->value) != 0) {

            abort();

        }

    }

}