diff options
| -rw-r--r-- | hw/display/cirrus_vga.c | 26 |
1 files changed, 8 insertions, 18 deletions
diff --git a/hw/display/cirrus_vga.c b/hw/display/cirrus_vga.c index e8fd44fa0e..a093dc8b16 100644 --- a/hw/display/cirrus_vga.c +++ b/hw/display/cirrus_vga.c @@ -272,6 +272,9 @@ static void cirrus_update_memory_access(CirrusVGAState *s); static bool blit_region_is_unsafe(struct CirrusVGAState *s, int32_t pitch, int32_t addr) { + if (!pitch) { + return true; + } if (pitch < 0) { int64_t min = addr + ((int64_t)s->cirrus_blt_height - 1) * pitch @@ -290,11 +293,8 @@ static bool blit_region_is_unsafe(struct CirrusVGAState *s, return false; } -static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only, - bool zero_src_pitch_ok) +static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only) { - int32_t check_pitch; - /* should be the case, see cirrus_bitblt_start */ assert(s->cirrus_blt_width > 0); assert(s->cirrus_blt_height > 0); @@ -303,10 +303,6 @@ static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only, return true; } - if (!s->cirrus_blt_dstpitch) { - return true; - } - if (blit_region_is_unsafe(s, s->cirrus_blt_dstpitch, s->cirrus_blt_dstaddr)) { return true; @@ -314,13 +310,7 @@ static bool blit_is_unsafe(struct CirrusVGAState *s, bool dst_only, if (dst_only) { return false; } - - check_pitch = s->cirrus_blt_srcpitch; - if (!zero_src_pitch_ok && !check_pitch) { - check_pitch = s->cirrus_blt_width; - } - - if (blit_region_is_unsafe(s, check_pitch, + if (blit_region_is_unsafe(s, s->cirrus_blt_srcpitch, s->cirrus_blt_srcaddr)) { return true; } @@ -715,7 +705,7 @@ static int cirrus_bitblt_common_patterncopy(CirrusVGAState *s, bool videosrc) src = s->cirrus_bltbuf; } - if (blit_is_unsafe(s, true, true)) { + if (blit_is_unsafe(s, true)) { return 0; } @@ -734,7 +724,7 @@ static int cirrus_bitblt_solidfill(CirrusVGAState *s, int blt_rop) { cirrus_fill_t rop_func; - if (blit_is_unsafe(s, true, true)) { + if (blit_is_unsafe(s, true)) { return 0; } rop_func = cirrus_fill[rop_to_index[blt_rop]][s->cirrus_blt_pixelwidth - 1]; @@ -834,7 +824,7 @@ static int cirrus_do_copy(CirrusVGAState *s, int dst, int src, int w, int h) static int cirrus_bitblt_videotovideo_copy(CirrusVGAState * s) { - if (blit_is_unsafe(s, false, false)) + if (blit_is_unsafe(s, false)) return 0; return cirrus_do_copy(s, s->cirrus_blt_dstaddr - s->vga.start_addr, |