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authorPaolo Bonzini <pbonzini@redhat.com>2014-01-31 14:47:33 +0000
committerPeter Maydell <peter.maydell@linaro.org>2014-01-31 14:47:33 +0000
commit2cdaca90ddf3291f308a10623c1a802ef760bac1 (patch)
treee5b7734441cf70ebeee56b9d20d09afe362f0aac
parentb48adc0d301464d627d6d0f83dee911a2138187f (diff)
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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>
-rw-r--r--hw/display/blizzard_template.h40
-rw-r--r--hw/display/pl110_template.h12
-rw-r--r--hw/display/pxa2xx_template.h22
-rw-r--r--hw/display/tc6393xb_template.h14
4 files changed, 59 insertions, 29 deletions
diff --git a/hw/display/blizzard_template.h b/hw/display/blizzard_template.h
index a8a8899..b7ef27c 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
diff --git a/hw/display/pl110_template.h b/hw/display/pl110_template.h
index e738e4a..36ba791 100644
--- a/hw/display/pl110_template.h
+++ b/hw/display/pl110_template.h
@@ -14,12 +14,16 @@
#if BITS == 8
#define COPY_PIXEL(to, from) *(to++) = from
#elif BITS == 15 || BITS == 16
-#define COPY_PIXEL(to, from) *(uint16_t *)to = from; to += 2;
+#define COPY_PIXEL(to, from) do { *(uint16_t *)to = from; to += 2; } while (0)
#elif BITS == 24
-#define COPY_PIXEL(to, from) \
- *(to++) = from; *(to++) = (from) >> 8; *(to++) = (from) >> 16
+#define COPY_PIXEL(to, from) \
+ do { \
+ *(to++) = from; \
+ *(to++) = (from) >> 8; \
+ *(to++) = (from) >> 16; \
+ } while (0)
#elif BITS == 32
-#define COPY_PIXEL(to, from) *(uint32_t *)to = from; to += 4;
+#define COPY_PIXEL(to, from) do { *(uint32_t *)to = from; to += 4; } while (0)
#else
#error unknown bit depth
#endif
diff --git a/hw/display/pxa2xx_template.h b/hw/display/pxa2xx_template.h
index 1cbe36c..c64eebc 100644
--- a/hw/display/pxa2xx_template.h
+++ b/hw/display/pxa2xx_template.h
@@ -11,14 +11,26 @@
# define SKIP_PIXEL(to) to += deststep
#if BITS == 8
-# define COPY_PIXEL(to, from) *to = from; SKIP_PIXEL(to)
+# define COPY_PIXEL(to, from) do { *to = from; SKIP_PIXEL(to); } while (0)
#elif BITS == 15 || BITS == 16
-# define COPY_PIXEL(to, from) *(uint16_t *) to = from; SKIP_PIXEL(to)
+# define COPY_PIXEL(to, from) \
+ do { \
+ *(uint16_t *) to = from; \
+ SKIP_PIXEL(to); \
+ } while (0)
#elif BITS == 24
-# define COPY_PIXEL(to, from) \
- *(uint16_t *) to = from; *(to + 2) = (from) >> 16; SKIP_PIXEL(to)
+# define COPY_PIXEL(to, from) \
+ do { \
+ *(uint16_t *) to = from; \
+ *(to + 2) = (from) >> 16; \
+ SKIP_PIXEL(to); \
+ } while (0)
#elif BITS == 32
-# define COPY_PIXEL(to, from) *(uint32_t *) to = from; SKIP_PIXEL(to)
+# define COPY_PIXEL(to, from) \
+ do { \
+ *(uint32_t *) to = from; \
+ SKIP_PIXEL(to); \
+ } while (0)
#else
# error unknown bit depth
#endif
diff --git a/hw/display/tc6393xb_template.h b/hw/display/tc6393xb_template.h
index 154aafd..78629c0 100644
--- a/hw/display/tc6393xb_template.h
+++ b/hw/display/tc6393xb_template.h
@@ -22,14 +22,18 @@
*/
#if BITS == 8
-# define SET_PIXEL(addr, color) *(uint8_t*)addr = color;
+# define SET_PIXEL(addr, color) (*(uint8_t *)addr = color)
#elif BITS == 15 || BITS == 16
-# define SET_PIXEL(addr, color) *(uint16_t*)addr = color;
+# define SET_PIXEL(addr, color) (*(uint16_t *)addr = color)
#elif BITS == 24
-# define SET_PIXEL(addr, color) \
- addr[0] = color; addr[1] = (color) >> 8; addr[2] = (color) >> 16;
+# define SET_PIXEL(addr, color) \
+ do { \
+ addr[0] = color; \
+ addr[1] = (color) >> 8; \
+ addr[2] = (color) >> 16; \
+ } while (0)
#elif BITS == 32
-# define SET_PIXEL(addr, color) *(uint32_t*)addr = color;
+# define SET_PIXEL(addr, color) (*(uint32_t *)addr = color)
#else
# error unknown bit depth
#endif