static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h) { int sx = 0, sy = 0; int dx = 0, dy = 0; int depth = 0; int notify = 0; /* make sure to only copy if it's a plain copy ROP */ if (*s->cirrus_rop == cirrus_bitblt_rop_fwd_src || *s->cirrus_rop == cirrus_bitblt_rop_bkwd_src) { int width, height; depth = s->vga.get_bpp(&s->vga) / 8; if (!depth) { return 0; } s->vga.get_resolution(&s->vga, &width, &height); /* extra x, y */ sx = (src % ABS(s->cirrus_blt_srcpitch)) / depth; sy = (src / ABS(s->cirrus_blt_srcpitch)); dx = (dst % ABS(s->cirrus_blt_dstpitch)) / depth; dy = (dst / ABS(s->cirrus_blt_dstpitch)); /* normalize width */ w /= depth; /* if we're doing a backward copy, we have to adjust our x/y to be the upper left corner (instead of the lower right corner) */ if (s->cirrus_blt_dstpitch < 0) { sx -= (s->cirrus_blt_width / depth) - 1; dx -= (s->cirrus_blt_width / depth) - 1; sy -= s->cirrus_blt_height - 1; dy -= s->cirrus_blt_height - 1; } /* are we in the visible portion of memory? */ if (sx >= 0 && sy >= 0 && dx >= 0 && dy >= 0 && (sx + w) <= width && (sy + h) <= height && (dx + w) <= width && (dy + h) <= height) { notify = 1; } } (*s->cirrus_rop) (s, s->vga.vram_ptr + s->cirrus_blt_dstaddr, s->vga.vram_ptr + s->cirrus_blt_srcaddr, s->cirrus_blt_dstpitch, s->cirrus_blt_srcpitch, s->cirrus_blt_width, s->cirrus_blt_height); if (notify) { dpy_gfx_update(s->vga.con, dx, dy, s->cirrus_blt_width / depth, s->cirrus_blt_height); } /* we don't have to notify the display that this portion has changed since qemu_console_copy implies this */ cirrus_invalidate_region(s, s->cirrus_blt_dstaddr, s->cirrus_blt_dstpitch, s->cirrus_blt_width, s->cirrus_blt_height); return 1; }