Archipelago » qemu

/* used for ROM loading : can write in RAM and ROM */

void cpu_physical_memory_write_rom(target_phys_addr_t addr, 

                                   const uint8_t *buf, int len)

{

    int l;

    uint8_t *ptr;

    target_phys_addr_t page;

    unsigned long pd;

    PhysPageDesc *p;

    while (len > 0) {

        page = addr & TARGET_PAGE_MASK;

        l = (page + TARGET_PAGE_SIZE) - addr;

        if (l > len)

            l = len;

        p = phys_page_find(page >> TARGET_PAGE_BITS);

        if (!p) {

            pd = IO_MEM_UNASSIGNED;

        } else {

            pd = p->phys_offset;

        }

        if ((pd & ~TARGET_PAGE_MASK) != IO_MEM_RAM &&

            (pd & ~TARGET_PAGE_MASK) != IO_MEM_ROM) {

            /* do nothing */

        } else {

            unsigned long addr1;

            addr1 = (pd & TARGET_PAGE_MASK) + (addr & ~TARGET_PAGE_MASK);

            /* ROM/RAM case */

            ptr = phys_ram_base + addr1;

            memcpy(ptr, buf, l);

        }

        len -= l;

        buf += l;

        addr += l;

    }

}