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
sighandler(int sig,siginfo_t * sip,void * arg)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
main(void)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