These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / tools / testing / selftests / x86 / test_FCMOV.c

diff --git a/kernel/tools/testing/selftests/x86/test_FCMOV.c b/kernel/tools/testing/selftests/x86/test_FCMOV.c
new file mode 100644 (file)
index 0000000..4adcca0
--- /dev/null
+++ b/kernel/tools/testing/selftests/x86/test_FCMOV.c
@@ -0,0 +1,93 @@
+#undef _GNU_SOURCE
+#define _GNU_SOURCE 1
+#undef __USE_GNU
+#define __USE_GNU 1
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/select.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+
+#define TEST(insn) \
+long double __attribute__((noinline)) insn(long flags) \
+{                                              \
+       long double out;                        \
+       asm ("\n"                               \
+       "       push    %1""\n"                 \
+       "       popf""\n"                       \
+       "       fldpi""\n"                      \
+       "       fld1""\n"                       \
+       "       " #insn " %%st(1), %%st" "\n"   \
+       "       ffree   %%st(1)" "\n"           \
+       : "=t" (out)                            \
+       : "r" (flags)                           \
+       );                                      \
+       return out;                             \
+}
+
+TEST(fcmovb)
+TEST(fcmove)
+TEST(fcmovbe)
+TEST(fcmovu)
+TEST(fcmovnb)
+TEST(fcmovne)
+TEST(fcmovnbe)
+TEST(fcmovnu)
+
+enum {
+       CF = 1 << 0,
+       PF = 1 << 2,
+       ZF = 1 << 6,
+};
+
+void sighandler(int sig)
+{
+       printf("[FAIL]\tGot signal %d, exiting\n", sig);
+       exit(1);
+}
+
+int main(int argc, char **argv, char **envp)
+{
+       int err = 0;
+
+       /* SIGILL triggers on 32-bit kernels w/o fcomi emulation
+        * when run with "no387 nofxsr". Other signals are caught
+        * just in case.
+        */
+       signal(SIGILL, sighandler);
+       signal(SIGFPE, sighandler);
+       signal(SIGSEGV, sighandler);
+
+       printf("[RUN]\tTesting fcmovCC instructions\n");
+       /* If fcmovCC() returns 1.0, the move wasn't done */
+       err |= !(fcmovb(0)   == 1.0); err |= !(fcmovnb(0)  != 1.0);
+       err |= !(fcmove(0)   == 1.0); err |= !(fcmovne(0)  != 1.0);
+       err |= !(fcmovbe(0)  == 1.0); err |= !(fcmovnbe(0) != 1.0);
+       err |= !(fcmovu(0)   == 1.0); err |= !(fcmovnu(0)  != 1.0);
+
+       err |= !(fcmovb(CF)  != 1.0); err |= !(fcmovnb(CF)  == 1.0);
+       err |= !(fcmove(CF)  == 1.0); err |= !(fcmovne(CF)  != 1.0);
+       err |= !(fcmovbe(CF) != 1.0); err |= !(fcmovnbe(CF) == 1.0);
+       err |= !(fcmovu(CF)  == 1.0); err |= !(fcmovnu(CF)  != 1.0);
+
+       err |= !(fcmovb(ZF)  == 1.0); err |= !(fcmovnb(ZF)  != 1.0);
+       err |= !(fcmove(ZF)  != 1.0); err |= !(fcmovne(ZF)  == 1.0);
+       err |= !(fcmovbe(ZF) != 1.0); err |= !(fcmovnbe(ZF) == 1.0);
+       err |= !(fcmovu(ZF)  == 1.0); err |= !(fcmovnu(ZF)  != 1.0);
+
+       err |= !(fcmovb(PF)  == 1.0); err |= !(fcmovnb(PF)  != 1.0);
+       err |= !(fcmove(PF)  == 1.0); err |= !(fcmovne(PF)  != 1.0);
+       err |= !(fcmovbe(PF) == 1.0); err |= !(fcmovnbe(PF) != 1.0);
+       err |= !(fcmovu(PF)  != 1.0); err |= !(fcmovnu(PF)  == 1.0);
+
+        if (!err)
+                printf("[OK]\tfcmovCC\n");
+       else
+               printf("[FAIL]\tfcmovCC errors: %d\n", err);
+
+       return err;
+}