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