static int cirrus_bitblt_videotovideo_copy(CirrusVGAState * s) { if (blit_is_unsafe(s)) return 0; cirrus_do_copy(s, s->cirrus_blt_dstaddr - s->vga.start_addr, s->cirrus_blt_srcaddr - s->vga.start_addr, s->cirrus_blt_width, s->cirrus_blt_height); return 1; }