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15#include <stdio.h>
16#include <unistd.h>
17#include <sys/syscall.h>
18#include <sys/time.h>
19#include <sys/types.h>
20#include <sys/wait.h>
21#include <stdlib.h>
22#include <string.h>
23#include <pthread.h>
24#include <altivec.h>
25
26#include "utils.h"
27
28
29#define ITERATIONS 10
30
31
32
33
34#define THREAD_FACTOR 8
35
36__thread vector int varray[] = {{1, 2, 3, 4}, {5, 6, 7, 8}, {9, 10,11,12},
37 {13,14,15,16},{17,18,19,20},{21,22,23,24},
38 {25,26,27,28},{29,30,31,32},{33,34,35,36},
39 {37,38,39,40},{41,42,43,44},{45,46,47,48}};
40
41bool bad_context;
42int running;
43int threads_starting;
44
45extern int preempt_vmx(vector int *varray, int *threads_starting, int *sentinal);
46
47void signal_vmx_sig(int sig, siginfo_t *info, void *context)
48{
49 int i;
50 ucontext_t *uc = context;
51 mcontext_t *mc = &uc->uc_mcontext;
52
53
54 for (i = 20; i < 32; i++) {
55 if (memcmp(mc->v_regs->vrregs[i], &varray[i - 20], 16)) {
56 int j;
57
58
59
60
61
62
63 printf("VMX mismatch at reg %d!\n", i);
64 printf("Reg | Actual | Expected\n");
65 for (j = 20; j < 32; j++) {
66 printf("%d | 0x%04x%04x%04x%04x | 0x%04x%04x%04x%04x\n", j, mc->v_regs->vrregs[j][0],
67 mc->v_regs->vrregs[j][1], mc->v_regs->vrregs[j][2], mc->v_regs->vrregs[j][3],
68 varray[j - 20][0], varray[j - 20][1], varray[j - 20][2], varray[j - 20][3]);
69 }
70 bad_context = true;
71 break;
72 }
73 }
74}
75
76void *signal_vmx_c(void *p)
77{
78 int i, j;
79 long rc;
80 struct sigaction act;
81 act.sa_sigaction = signal_vmx_sig;
82 act.sa_flags = SA_SIGINFO;
83 rc = sigaction(SIGUSR1, &act, NULL);
84 if (rc)
85 return p;
86
87 srand(pthread_self());
88 for (i = 0; i < 12; i++)
89 for (j = 0; j < 4; j++)
90 varray[i][j] = rand();
91
92 rc = preempt_vmx(varray, &threads_starting, &running);
93
94 return (void *) rc;
95}
96
97int test_signal_vmx(void)
98{
99 int i, j, rc, threads;
100 void *rc_p;
101 pthread_t *tids;
102
103 threads = sysconf(_SC_NPROCESSORS_ONLN) * THREAD_FACTOR;
104 tids = malloc(threads * sizeof(pthread_t));
105 FAIL_IF(!tids);
106
107 running = true;
108 threads_starting = threads;
109 for (i = 0; i < threads; i++) {
110 rc = pthread_create(&tids[i], NULL, signal_vmx_c, NULL);
111 FAIL_IF(rc);
112 }
113
114 setbuf(stdout, NULL);
115 printf("\tWaiting for %d workers to start... %d", threads, threads_starting);
116 while (threads_starting) {
117 asm volatile("": : :"memory");
118 usleep(1000);
119 printf(", %d", threads_starting);
120 }
121 printf(" ...done\n");
122
123 printf("\tSending signals to all threads %d times...", ITERATIONS);
124 for (i = 0; i < ITERATIONS; i++) {
125 for (j = 0; j < threads; j++) {
126 pthread_kill(tids[j], SIGUSR1);
127 }
128 sleep(1);
129 }
130 printf("done\n");
131
132 printf("\tKilling workers...");
133 running = 0;
134 for (i = 0; i < threads; i++) {
135 pthread_join(tids[i], &rc_p);
136
137
138
139
140
141 if ((long) rc_p || bad_context)
142 printf("oops\n");
143 if (bad_context)
144 fprintf(stderr, "\t!! bad_context is true\n");
145 FAIL_IF((long) rc_p || bad_context);
146 }
147 printf("done\n");
148
149 free(tids);
150 return 0;
151}
152
153int main(int argc, char *argv[])
154{
155 return test_harness(test_signal_vmx, "vmx_signal");
156}
157