Archipelago » qemu

typedef struct BDRVVPCState {

    int fd;

    int pagetable_entries;

    uint32_t *pagetable;

    uint8_t *pageentry_u8;

    uint32_t *pageentry_u32;

    uint16_t *pageentry_u16;

    uint64_t last_bitmap;

#endif

} BDRVVPCState;

        return -1;

    bs->read_only = 1; // no write support yet

    s->fd = fd;

    if (read(fd, &header, HEADER_SIZE) != HEADER_SIZE)

    pagetable_index = offset / s->pageentry_size;

    pageentry_index = (offset % s->pageentry_size) / 512;

    if (pagetable_index > s->pagetable_entries || s->pagetable[pagetable_index] == 0xffffffff)

	return -1; // not allocated

    bitmap_offset = 512 * s->pagetable[pagetable_index];

    block_offset = bitmap_offset + 512 + (512 * pageentry_index);

//    printf("sector: %" PRIx64 ", index: %x, offset: %x, bioff: %" PRIx64 ", bloff: %" PRIx64 "\n",

//	sector_num, pagetable_index, pageentry_index,

//	bitmap_offset, block_offset);