1 #undef _GNU_SOURCE
2 #define _GNU_SOURCE 1
3 #undef __USE_GNU
4 #define __USE_GNU 1
5 #include <unistd.h>
6 #include <stdlib.h>
7 #include <string.h>
8 #include <stdio.h>
9 #include <signal.h>
10 #include <sys/types.h>
11 #include <sys/select.h>
12 #include <sys/time.h>
13 #include <sys/wait.h>
14
15 #define TEST(insn) \
16 long double __attribute__((noinline)) insn(long flags) \
17 { \
18 long double out; \
19 asm ("\n" \
20 " push %1""\n" \
21 " popf""\n" \
22 " fldpi""\n" \
23 " fld1""\n" \
24 " " #insn " %%st(1), %%st" "\n" \
25 " ffree %%st(1)" "\n" \
26 : "=t" (out) \
27 : "r" (flags) \
28 ); \
29 return out; \
30 }
31
32 TEST(fcmovb)
33 TEST(fcmove)
34 TEST(fcmovbe)
35 TEST(fcmovu)
36 TEST(fcmovnb)
37 TEST(fcmovne)
38 TEST(fcmovnbe)
39 TEST(fcmovnu)
40
41 enum {
42 CF = 1 << 0,
43 PF = 1 << 2,
44 ZF = 1 << 6,
45 };
46
sighandler(int sig)47 void sighandler(int sig)
48 {
49 printf("[FAIL]\tGot signal %d, exiting\n", sig);
50 exit(1);
51 }
52
main(int argc,char ** argv,char ** envp)53 int main(int argc, char **argv, char **envp)
54 {
55 int err = 0;
56
57 /* SIGILL triggers on 32-bit kernels w/o fcomi emulation
58 * when run with "no387 nofxsr". Other signals are caught
59 * just in case.
60 */
61 signal(SIGILL, sighandler);
62 signal(SIGFPE, sighandler);
63 signal(SIGSEGV, sighandler);
64
65 printf("[RUN]\tTesting fcmovCC instructions\n");
66 /* If fcmovCC() returns 1.0, the move wasn't done */
67 err |= !(fcmovb(0) == 1.0); err |= !(fcmovnb(0) != 1.0);
68 err |= !(fcmove(0) == 1.0); err |= !(fcmovne(0) != 1.0);
69 err |= !(fcmovbe(0) == 1.0); err |= !(fcmovnbe(0) != 1.0);
70 err |= !(fcmovu(0) == 1.0); err |= !(fcmovnu(0) != 1.0);
71
72 err |= !(fcmovb(CF) != 1.0); err |= !(fcmovnb(CF) == 1.0);
73 err |= !(fcmove(CF) == 1.0); err |= !(fcmovne(CF) != 1.0);
74 err |= !(fcmovbe(CF) != 1.0); err |= !(fcmovnbe(CF) == 1.0);
75 err |= !(fcmovu(CF) == 1.0); err |= !(fcmovnu(CF) != 1.0);
76
77 err |= !(fcmovb(ZF) == 1.0); err |= !(fcmovnb(ZF) != 1.0);
78 err |= !(fcmove(ZF) != 1.0); err |= !(fcmovne(ZF) == 1.0);
79 err |= !(fcmovbe(ZF) != 1.0); err |= !(fcmovnbe(ZF) == 1.0);
80 err |= !(fcmovu(ZF) == 1.0); err |= !(fcmovnu(ZF) != 1.0);
81
82 err |= !(fcmovb(PF) == 1.0); err |= !(fcmovnb(PF) != 1.0);
83 err |= !(fcmove(PF) == 1.0); err |= !(fcmovne(PF) != 1.0);
84 err |= !(fcmovbe(PF) == 1.0); err |= !(fcmovnbe(PF) != 1.0);
85 err |= !(fcmovu(PF) != 1.0); err |= !(fcmovnu(PF) == 1.0);
86
87 if (!err)
88 printf("[OK]\tfcmovCC\n");
89 else
90 printf("[FAIL]\tfcmovCC errors: %d\n", err);
91
92 return err;
93 }
94