diff options
| -rw-r--r-- | hw/loader.c | 38 | ||||
| -rw-r--r-- | hw/loader.h | 1 |
2 files changed, 39 insertions, 0 deletions
diff --git a/hw/loader.c b/hw/loader.c index 7f9fc2157a..2d7a2c4954 100644 --- a/hw/loader.c +++ b/hw/loader.c @@ -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; diff --git a/hw/loader.h b/hw/loader.h index 67dae571c3..b3311a3927 100644 --- a/hw/loader.h +++ b/hw/loader.h @@ -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); |