diff options
| author | Paolo Bonzini <pbonzini@redhat.com> | 2014-01-31 14:47:33 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-01-31 14:47:33 +0000 |
| commit | 2cdaca90ddf3291f308a10623c1a802ef760bac1 (patch) | |
| tree | e5b7734441cf70ebeee56b9d20d09afe362f0aac /hw/display/blizzard_template.h | |
| parent | b48adc0d301464d627d6d0f83dee911a2138187f (diff) | |
| download | qemu-2cdaca90ddf3291f308a10623c1a802ef760bac1.tar.gz | |
display: avoid multi-statement macro
For blizzard, pl110 and tc6393xb this is harmless, but for pxa2xx
Coverity noticed that it is used inside an "if" statement.
Fix it because it's the file with the highest number of defects
in the whole QEMU tree! Use "do...while (0)", or just remove the
semicolon if there's a single statement in the macro.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/display/blizzard_template.h')
| -rw-r--r-- | hw/display/blizzard_template.h | 40 |
1 files changed, 25 insertions, 15 deletions
diff --git a/hw/display/blizzard_template.h b/hw/display/blizzard_template.h index a8a8899478..b7ef27c808 100644 --- a/hw/display/blizzard_template.h +++ b/hw/display/blizzard_template.h @@ -18,25 +18,35 @@ * with this program; if not, see <http://www.gnu.org/licenses/>. */ -#define SKIP_PIXEL(to) to += deststep +#define SKIP_PIXEL(to) (to += deststep) #if DEPTH == 8 -# define PIXEL_TYPE uint8_t -# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to) -# define COPY_PIXEL1(to, from) *to ++ = from +# define PIXEL_TYPE uint8_t +# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0) +# define COPY_PIXEL1(to, from) (*to++ = from) #elif DEPTH == 15 || DEPTH == 16 -# define PIXEL_TYPE uint16_t -# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to) -# define COPY_PIXEL1(to, from) *to ++ = from +# define PIXEL_TYPE uint16_t +# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0) +# define COPY_PIXEL1(to, from) (*to++ = from) #elif DEPTH == 24 -# define PIXEL_TYPE uint8_t -# define COPY_PIXEL(to, from) \ - to[0] = from; to[1] = (from) >> 8; to[2] = (from) >> 16; SKIP_PIXEL(to) -# define COPY_PIXEL1(to, from) \ - *to ++ = from; *to ++ = (from) >> 8; *to ++ = (from) >> 16 +# define PIXEL_TYPE uint8_t +# define COPY_PIXEL(to, from) \ + do { \ + to[0] = from; \ + to[1] = (from) >> 8; \ + to[2] = (from) >> 16; \ + SKIP_PIXEL(to); \ + } while (0) + +# define COPY_PIXEL1(to, from) \ + do { \ + *to++ = from; \ + *to++ = (from) >> 8; \ + *to++ = (from) >> 16; \ + } while (0) #elif DEPTH == 32 -# define PIXEL_TYPE uint32_t -# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to) -# define COPY_PIXEL1(to, from) *to ++ = from +# define PIXEL_TYPE uint32_t +# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0) +# define COPY_PIXEL1(to, from) (*to++ = from) #else # error unknown bit depth #endif |