1 /* x86 variant of the amd64-solaris/context_sse.c test. */ 2 3 #include <assert.h> 4 #include <signal.h> 5 #include <stdio.h> 6 #include <stdlib.h> 7 #include <unistd.h> 8 #include <sys/syscall.h> 9 #include <sys/ucontext.h> 10 11 #include "config.h" 12 13 static siginfo_t si; 14 static ucontext_t uc; 15 /* x0 is always zero, but is visible to Valgrind as uninitialised. */ 16 static upad128_t x0; 17 static upad128_t d0 = {0}; 18 19 static void sighandler(int sig, siginfo_t *sip, void *arg) 20 { 21 ucontext_t *ucp = (ucontext_t *) arg; 22 23 si = *sip; 24 uc = *ucp; 25 26 ucp->uc_mcontext.fpregs.fp_reg_set.fpchip_state.xmm[0] = d0; 27 ucp->uc_mcontext.fpregs.fp_reg_set.fpchip_state.xmm[1] = x0; 28 } 29 30 int main(void) 31 { 32 struct sigaction sa; 33 pid_t pid; 34 upad128_t out[8]; 35 upad128_t y0; 36 37 #if defined(SOLARIS_FPCHIP_STATE_TAKES_UNDERSCORE) 38 struct _fpchip_state *fs; 39 #else 40 struct fpchip_state *fs; 41 #endif 42 fs = &uc.uc_mcontext.fpregs.fp_reg_set.fpchip_state; 43 44 /* Uninitialised, but we know px[0] is 0x0. */ 45 upad128_t *px = malloc(sizeof(*px)); 46 x0 = px[0]; 47 48 /* Uninitialised, but we know py[0] is 0x0. */ 49 upad128_t *py = malloc(sizeof(*py)); 50 y0 = py[0]; 51 52 sa.sa_sigaction = sighandler; 53 sa.sa_flags = SA_SIGINFO; 54 if (sigfillset(&sa.sa_mask)) { 55 perror("sigfillset"); 56 return 1; 57 } 58 if (sigaction(SIGUSR1, &sa, NULL)) { 59 perror("sigaction"); 60 return 1; 61 } 62 63 pid = getpid(); 64 65 __asm__ __volatile__( 66 /* Set values in the SSE registers. */ 67 "movups %[y0], %%xmm0\n" 68 "movups %[d0], %%xmm1\n" 69 "movups %[d0], %%xmm2\n" 70 "movups %[y0], %%xmm3\n" 71 "movups %[y0], %%xmm4\n" 72 "movups %[d0], %%xmm5\n" 73 "movups %[d0], %%xmm6\n" 74 "movups %[y0], %%xmm7\n" 75 76 /* Prepare syscall parameters. */ 77 "pushl %[sig]\n" 78 "pushl %[pid]\n" 79 "pushl $0xdeadbeef\n" 80 "movl %[scall], %%eax\n" 81 82 /* Trigger the signal handler. */ 83 "int $0x91\n" 84 "addl $12, %%esp\n" 85 "movups %%xmm0, 0x00 + %[out]\n" 86 "movups %%xmm1, 0x10 + %[out]\n" 87 "movups %%xmm2, 0x20 + %[out]\n" 88 "movups %%xmm3, 0x30 + %[out]\n" 89 "movups %%xmm4, 0x40 + %[out]\n" 90 "movups %%xmm5, 0x50 + %[out]\n" 91 "movups %%xmm6, 0x60 + %[out]\n" 92 "movups %%xmm7, 0x70 + %[out]\n" 93 : [out] "=m" (out[0]) 94 : [scall] "i" (SYS_kill), [pid] "a" (pid), [sig] "i" (SIGUSR1), 95 [y0] "m" (y0), [d0] "m" (d0) 96 : "edx", "cc", "memory"); 97 98 printf("Values in the signal handler:\n"); 99 printf(" xmm1=%Lf, xmm2=%Lf, xmm5=%Lf, xmm6=%Lf\n", 100 fs->xmm[1]._q, fs->xmm[2]._q, fs->xmm[5]._q, fs->xmm[6]._q); 101 /* Check that fs->xmm[0], fs->xmm[3], fs->xmm[4] and fs->xmm[7] contain 102 uninitialised values (origin is py[0]). */ 103 if (fs->xmm[0]._q || fs->xmm[3]._q || fs->xmm[4]._q || fs->xmm[7]._q) 104 assert(0); 105 106 printf("Values after the return from the signal handler:\n"); 107 printf(" xmm0=%Lf, xmm2=%Lf, xmm5=%Lf, xmm6=%Lf\n", 108 out[0]._q, out[2]._q, out[5]._q, out[6]._q); 109 /* Check that out[1], out[3], out[4] and out[7] contain uninitialised 110 values (origin is px[0]). */ 111 if (out[1]._q || out[3]._q || out[4]._q || out[7]._q) 112 assert(0); 113 114 return 0; 115 } 116 117
