Commit 235f86ef authored by Alexander Graf's avatar Alexander Graf Committed by Anthony Liguori
Browse files

Introduce rom_copy 



We have several rom helpers currently, but none of them can get us
code that spans several roms into a pointer.

This patch introduces a function that copies over rom contents.

Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarAnthony Liguori <aliguori@us.ibm.com>
parent ff06108b

hw/loader.c

+38 −0
Original line number Diff line number Diff line
@@ -708,6 +708,44 @@ static Rom *find_rom(target_phys_addr_t addr) 
    return NULL;

}



int rom_copy(uint8_t *dest, target_phys_addr_t addr, size_t size)

{

    target_phys_addr_t end = addr + size;

    uint8_t *s, *d = dest;

    size_t l = 0;

    Rom *rom;



    QTAILQ_FOREACH(rom, &roms, next) {

        if (rom->max)

            continue;

        if (rom->min > addr)

            continue;

        if (rom->min + rom->romsize < addr)

            continue;

        if (rom->min > end)

            break;

        if (!rom->data)

            continue;



        d = dest + (rom->min - addr);

        s = rom->data;

        l = rom->romsize;



        if (rom->min < addr) {

            d = dest;

            s += (addr - rom->min);

            l -= (addr - rom->min);

        }

        if ((d + l) > (dest + size)) {

            l = dest - d;

        }



        memcpy(d, s, l);

    }



    return (d + l) - dest;

}



void *rom_ptr(target_phys_addr_t addr)

{

    Rom *rom;

hw/loader.h

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ int rom_add_file(const char *file, 
int rom_add_blob(const char *name, const void *blob, size_t len,

                 target_phys_addr_t min, target_phys_addr_t max, int align);

int rom_load_all(void);

int rom_copy(uint8_t *dest, target_phys_addr_t addr, size_t size);

void *rom_ptr(target_phys_addr_t addr);

void do_info_roms(Monitor *mon);