if (idx <= s->vga.vram_size - size) {
val = ldn_le_p(s->vga.vram_ptr + idx, size);
}
- } else {
+ } else if (s->regs.mm_index > MM_DATA + 3) {
val = ati_mm_read(s, s->regs.mm_index + addr - MM_DATA, size);
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "ati_mm_read: mm_index too small: %u\n", s->regs.mm_index);
}
break;
case BIOS_0_SCRATCH ... BUS_CNTL - 1:
if (idx <= s->vga.vram_size - size) {
stn_le_p(s->vga.vram_ptr + idx, size, data);
}
- } else {
+ } else if (s->regs.mm_index > MM_DATA + 3) {
ati_mm_write(s, s->regs.mm_index + addr - MM_DATA, data, size);
+ } else {
+ qemu_log_mask(LOG_GUEST_ERROR,
+ "ati_mm_write: mm_index too small: %u\n", s->regs.mm_index);
}
break;
case BIOS_0_SCRATCH ... BUS_CNTL - 1: