1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #undef _GNU_SOURCE
3*4882a593Smuzhiyun #define _GNU_SOURCE 1
4*4882a593Smuzhiyun #undef __USE_GNU
5*4882a593Smuzhiyun #define __USE_GNU 1
6*4882a593Smuzhiyun #include <unistd.h>
7*4882a593Smuzhiyun #include <stdlib.h>
8*4882a593Smuzhiyun #include <string.h>
9*4882a593Smuzhiyun #include <stdio.h>
10*4882a593Smuzhiyun #include <signal.h>
11*4882a593Smuzhiyun #include <sys/types.h>
12*4882a593Smuzhiyun #include <sys/select.h>
13*4882a593Smuzhiyun #include <sys/time.h>
14*4882a593Smuzhiyun #include <sys/wait.h>
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun #define TEST(insn) \
17*4882a593Smuzhiyun long double __attribute__((noinline)) insn(long flags) \
18*4882a593Smuzhiyun { \
19*4882a593Smuzhiyun long double out; \
20*4882a593Smuzhiyun asm ("\n" \
21*4882a593Smuzhiyun " push %1""\n" \
22*4882a593Smuzhiyun " popf""\n" \
23*4882a593Smuzhiyun " fldpi""\n" \
24*4882a593Smuzhiyun " fld1""\n" \
25*4882a593Smuzhiyun " " #insn " %%st(1), %%st" "\n" \
26*4882a593Smuzhiyun " ffree %%st(1)" "\n" \
27*4882a593Smuzhiyun : "=t" (out) \
28*4882a593Smuzhiyun : "r" (flags) \
29*4882a593Smuzhiyun ); \
30*4882a593Smuzhiyun return out; \
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun TEST(fcmovb)
34*4882a593Smuzhiyun TEST(fcmove)
35*4882a593Smuzhiyun TEST(fcmovbe)
36*4882a593Smuzhiyun TEST(fcmovu)
37*4882a593Smuzhiyun TEST(fcmovnb)
38*4882a593Smuzhiyun TEST(fcmovne)
39*4882a593Smuzhiyun TEST(fcmovnbe)
40*4882a593Smuzhiyun TEST(fcmovnu)
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun enum {
43*4882a593Smuzhiyun CF = 1 << 0,
44*4882a593Smuzhiyun PF = 1 << 2,
45*4882a593Smuzhiyun ZF = 1 << 6,
46*4882a593Smuzhiyun };
47*4882a593Smuzhiyun
sighandler(int sig)48*4882a593Smuzhiyun void sighandler(int sig)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun printf("[FAIL]\tGot signal %d, exiting\n", sig);
51*4882a593Smuzhiyun exit(1);
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun
main(int argc,char ** argv,char ** envp)54*4882a593Smuzhiyun int main(int argc, char **argv, char **envp)
55*4882a593Smuzhiyun {
56*4882a593Smuzhiyun int err = 0;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun /* SIGILL triggers on 32-bit kernels w/o fcomi emulation
59*4882a593Smuzhiyun * when run with "no387 nofxsr". Other signals are caught
60*4882a593Smuzhiyun * just in case.
61*4882a593Smuzhiyun */
62*4882a593Smuzhiyun signal(SIGILL, sighandler);
63*4882a593Smuzhiyun signal(SIGFPE, sighandler);
64*4882a593Smuzhiyun signal(SIGSEGV, sighandler);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun printf("[RUN]\tTesting fcmovCC instructions\n");
67*4882a593Smuzhiyun /* If fcmovCC() returns 1.0, the move wasn't done */
68*4882a593Smuzhiyun err |= !(fcmovb(0) == 1.0); err |= !(fcmovnb(0) != 1.0);
69*4882a593Smuzhiyun err |= !(fcmove(0) == 1.0); err |= !(fcmovne(0) != 1.0);
70*4882a593Smuzhiyun err |= !(fcmovbe(0) == 1.0); err |= !(fcmovnbe(0) != 1.0);
71*4882a593Smuzhiyun err |= !(fcmovu(0) == 1.0); err |= !(fcmovnu(0) != 1.0);
72*4882a593Smuzhiyun
73*4882a593Smuzhiyun err |= !(fcmovb(CF) != 1.0); err |= !(fcmovnb(CF) == 1.0);
74*4882a593Smuzhiyun err |= !(fcmove(CF) == 1.0); err |= !(fcmovne(CF) != 1.0);
75*4882a593Smuzhiyun err |= !(fcmovbe(CF) != 1.0); err |= !(fcmovnbe(CF) == 1.0);
76*4882a593Smuzhiyun err |= !(fcmovu(CF) == 1.0); err |= !(fcmovnu(CF) != 1.0);
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun err |= !(fcmovb(ZF) == 1.0); err |= !(fcmovnb(ZF) != 1.0);
79*4882a593Smuzhiyun err |= !(fcmove(ZF) != 1.0); err |= !(fcmovne(ZF) == 1.0);
80*4882a593Smuzhiyun err |= !(fcmovbe(ZF) != 1.0); err |= !(fcmovnbe(ZF) == 1.0);
81*4882a593Smuzhiyun err |= !(fcmovu(ZF) == 1.0); err |= !(fcmovnu(ZF) != 1.0);
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun err |= !(fcmovb(PF) == 1.0); err |= !(fcmovnb(PF) != 1.0);
84*4882a593Smuzhiyun err |= !(fcmove(PF) == 1.0); err |= !(fcmovne(PF) != 1.0);
85*4882a593Smuzhiyun err |= !(fcmovbe(PF) == 1.0); err |= !(fcmovnbe(PF) != 1.0);
86*4882a593Smuzhiyun err |= !(fcmovu(PF) != 1.0); err |= !(fcmovnu(PF) == 1.0);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun if (!err)
89*4882a593Smuzhiyun printf("[OK]\tfcmovCC\n");
90*4882a593Smuzhiyun else
91*4882a593Smuzhiyun printf("[FAIL]\tfcmovCC errors: %d\n", err);
92*4882a593Smuzhiyun
93*4882a593Smuzhiyun return err;
94*4882a593Smuzhiyun }
95