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 } 94