| Denys Vlasenko | 57ca689 | 2015-09-17 15:02:13 +0200 | [diff] [blame] | 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 | |
| 47 | void sighandler(int sig) |
| 48 | { |
| 49 | printf("[FAIL]\tGot signal %d, exiting\n", sig); |
| 50 | exit(1); |
| 51 | } |
| 52 | |
| 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 | } |