1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Ptrace test for VMX/VSX registers
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (C) 2015 Anshuman Khandual, IBM Corporation.
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #include "ptrace.h"
8*4882a593Smuzhiyun #include "ptrace-vsx.h"
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun /* Tracer and Tracee Shared Data */
11*4882a593Smuzhiyun int shm_id;
12*4882a593Smuzhiyun int *cptr, *pptr;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun unsigned long fp_load[VEC_MAX];
15*4882a593Smuzhiyun unsigned long fp_load_new[VEC_MAX];
16*4882a593Smuzhiyun unsigned long fp_store[VEC_MAX];
17*4882a593Smuzhiyun
vsx(void)18*4882a593Smuzhiyun void vsx(void)
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun int ret;
21*4882a593Smuzhiyun
22*4882a593Smuzhiyun cptr = (int *)shmat(shm_id, NULL, 0);
23*4882a593Smuzhiyun loadvsx(fp_load, 0);
24*4882a593Smuzhiyun cptr[1] = 1;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun while (!cptr[0])
27*4882a593Smuzhiyun asm volatile("" : : : "memory");
28*4882a593Smuzhiyun shmdt((void *) cptr);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun storevsx(fp_store, 0);
31*4882a593Smuzhiyun ret = compare_vsx_vmx(fp_store, fp_load_new);
32*4882a593Smuzhiyun if (ret)
33*4882a593Smuzhiyun exit(1);
34*4882a593Smuzhiyun exit(0);
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
trace_vsx(pid_t child)37*4882a593Smuzhiyun int trace_vsx(pid_t child)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun unsigned long vsx[VSX_MAX];
40*4882a593Smuzhiyun unsigned long vmx[VMX_MAX + 2][2];
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun FAIL_IF(start_trace(child));
43*4882a593Smuzhiyun FAIL_IF(show_vsx(child, vsx));
44*4882a593Smuzhiyun FAIL_IF(validate_vsx(vsx, fp_load));
45*4882a593Smuzhiyun FAIL_IF(show_vmx(child, vmx));
46*4882a593Smuzhiyun FAIL_IF(validate_vmx(vmx, fp_load));
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun memset(vsx, 0, sizeof(vsx));
49*4882a593Smuzhiyun memset(vmx, 0, sizeof(vmx));
50*4882a593Smuzhiyun load_vsx_vmx(fp_load_new, vsx, vmx);
51*4882a593Smuzhiyun
52*4882a593Smuzhiyun FAIL_IF(write_vsx(child, vsx));
53*4882a593Smuzhiyun FAIL_IF(write_vmx(child, vmx));
54*4882a593Smuzhiyun FAIL_IF(stop_trace(child));
55*4882a593Smuzhiyun
56*4882a593Smuzhiyun return TEST_PASS;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
ptrace_vsx(void)59*4882a593Smuzhiyun int ptrace_vsx(void)
60*4882a593Smuzhiyun {
61*4882a593Smuzhiyun pid_t pid;
62*4882a593Smuzhiyun int ret, status, i;
63*4882a593Smuzhiyun
64*4882a593Smuzhiyun SKIP_IF(!have_hwcap(PPC_FEATURE_HAS_VSX));
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT);
67*4882a593Smuzhiyun
68*4882a593Smuzhiyun for (i = 0; i < VEC_MAX; i++)
69*4882a593Smuzhiyun fp_load[i] = i + rand();
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun for (i = 0; i < VEC_MAX; i++)
72*4882a593Smuzhiyun fp_load_new[i] = i + 2 * rand();
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun pid = fork();
75*4882a593Smuzhiyun if (pid < 0) {
76*4882a593Smuzhiyun perror("fork() failed");
77*4882a593Smuzhiyun return TEST_FAIL;
78*4882a593Smuzhiyun }
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun if (pid == 0)
81*4882a593Smuzhiyun vsx();
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun if (pid) {
84*4882a593Smuzhiyun pptr = (int *)shmat(shm_id, NULL, 0);
85*4882a593Smuzhiyun while (!pptr[1])
86*4882a593Smuzhiyun asm volatile("" : : : "memory");
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun ret = trace_vsx(pid);
89*4882a593Smuzhiyun if (ret) {
90*4882a593Smuzhiyun kill(pid, SIGTERM);
91*4882a593Smuzhiyun shmdt((void *)pptr);
92*4882a593Smuzhiyun shmctl(shm_id, IPC_RMID, NULL);
93*4882a593Smuzhiyun return TEST_FAIL;
94*4882a593Smuzhiyun }
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun pptr[0] = 1;
97*4882a593Smuzhiyun shmdt((void *)pptr);
98*4882a593Smuzhiyun
99*4882a593Smuzhiyun ret = wait(&status);
100*4882a593Smuzhiyun shmctl(shm_id, IPC_RMID, NULL);
101*4882a593Smuzhiyun if (ret != pid) {
102*4882a593Smuzhiyun printf("Child's exit status not captured\n");
103*4882a593Smuzhiyun return TEST_FAIL;
104*4882a593Smuzhiyun }
105*4882a593Smuzhiyun
106*4882a593Smuzhiyun return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL :
107*4882a593Smuzhiyun TEST_PASS;
108*4882a593Smuzhiyun }
109*4882a593Smuzhiyun return TEST_PASS;
110*4882a593Smuzhiyun }
111*4882a593Smuzhiyun
main(int argc,char * argv[])112*4882a593Smuzhiyun int main(int argc, char *argv[])
113*4882a593Smuzhiyun {
114*4882a593Smuzhiyun return test_harness(ptrace_vsx, "ptrace_vsx");
115*4882a593Smuzhiyun }
116