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| author | marha <marha@users.sourceforge.net> | 2010-09-14 13:17:20 +0000 |
|---|---|---|
| committer | marha <marha@users.sourceforge.net> | 2010-09-14 13:17:20 +0000 |
| commit | 3815190d52f8ae453c2458335394eb5b18ab9bf5 (patch) | |
| tree | f1d30ef6d20654c2b6e201dec66426f99465bea2 /pixman/test/utils.h | |
| parent | 9e19f3933a9c37ea36ce295b6434bbd326fe44ad (diff) | |
| download | vcxsrv-3815190d52f8ae453c2458335394eb5b18ab9bf5.tar.gz vcxsrv-3815190d52f8ae453c2458335394eb5b18ab9bf5.tar.bz2 vcxsrv-3815190d52f8ae453c2458335394eb5b18ab9bf5.zip | |
xserver libX11 pixman git update 14/9/2010
Diffstat (limited to 'pixman/test/utils.h')
| -rw-r--r-- | pixman/test/utils.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/pixman/test/utils.h b/pixman/test/utils.h index a5b3c91c4..ab71452a4 100644 --- a/pixman/test/utils.h +++ b/pixman/test/utils.h @@ -1,5 +1,6 @@ #include <stdlib.h>
#include <config.h>
+#include <assert.h>
#include "pixman-private.h" /* For 'inline' definition */
/* A primitive pseudorandom number generator,
@@ -65,3 +66,38 @@ fuzzer_test_main (const char *test_name, void
fail_after (int seconds, const char *msg);
+
+/* A pair of macros which can help to detect corruption of
+ * floating point registers after a function call. This may
+ * happen if _mm_empty() call is forgotten in MMX/SSE2 fast
+ * path code, or ARM NEON assembly optimized function forgets
+ * to save/restore d8-d15 registers before use.
+ */
+
+#define FLOAT_REGS_CORRUPTION_DETECTOR_START() \
+ static volatile double frcd_volatile_constant1 = 123451; \
+ static volatile double frcd_volatile_constant2 = 123452; \
+ static volatile double frcd_volatile_constant3 = 123453; \
+ static volatile double frcd_volatile_constant4 = 123454; \
+ static volatile double frcd_volatile_constant5 = 123455; \
+ static volatile double frcd_volatile_constant6 = 123456; \
+ static volatile double frcd_volatile_constant7 = 123457; \
+ static volatile double frcd_volatile_constant8 = 123458; \
+ double frcd_canary_variable1 = frcd_volatile_constant1; \
+ double frcd_canary_variable2 = frcd_volatile_constant2; \
+ double frcd_canary_variable3 = frcd_volatile_constant3; \
+ double frcd_canary_variable4 = frcd_volatile_constant4; \
+ double frcd_canary_variable5 = frcd_volatile_constant5; \
+ double frcd_canary_variable6 = frcd_volatile_constant6; \
+ double frcd_canary_variable7 = frcd_volatile_constant7; \
+ double frcd_canary_variable8 = frcd_volatile_constant8;
+
+#define FLOAT_REGS_CORRUPTION_DETECTOR_FINISH() \
+ assert (frcd_canary_variable1 == frcd_volatile_constant1); \
+ assert (frcd_canary_variable2 == frcd_volatile_constant2); \
+ assert (frcd_canary_variable3 == frcd_volatile_constant3); \
+ assert (frcd_canary_variable4 == frcd_volatile_constant4); \
+ assert (frcd_canary_variable5 == frcd_volatile_constant5); \
+ assert (frcd_canary_variable6 == frcd_volatile_constant6); \
+ assert (frcd_canary_variable7 == frcd_volatile_constant7); \
+ assert (frcd_canary_variable8 == frcd_volatile_constant8);
|