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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
11508074 AK |
2 | /* |
3 | * Ptrace test for VMX/VSX registers in the TM context | |
4 | * | |
5 | * Copyright (C) 2015 Anshuman Khandual, IBM Corporation. | |
11508074 AK |
6 | */ |
7 | #include "ptrace.h" | |
8 | #include "tm.h" | |
9 | #include "ptrace-vsx.h" | |
10 | ||
11 | int shm_id; | |
12 | unsigned long *cptr, *pptr; | |
13 | ||
14 | unsigned long fp_load[VEC_MAX]; | |
15 | unsigned long fp_store[VEC_MAX]; | |
16 | unsigned long fp_load_ckpt[VEC_MAX]; | |
17 | unsigned long fp_load_ckpt_new[VEC_MAX]; | |
18 | ||
19 | __attribute__((used)) void load_vsx(void) | |
20 | { | |
21 | loadvsx(fp_load, 0); | |
22 | } | |
23 | ||
24 | __attribute__((used)) void load_vsx_ckpt(void) | |
25 | { | |
26 | loadvsx(fp_load_ckpt, 0); | |
27 | } | |
28 | ||
29 | void tm_vsx(void) | |
30 | { | |
31 | unsigned long result, texasr; | |
32 | int ret; | |
33 | ||
34 | cptr = (unsigned long *)shmat(shm_id, NULL, 0); | |
35 | ||
36 | trans: | |
37 | cptr[1] = 0; | |
38 | asm __volatile__( | |
39 | "bl load_vsx_ckpt;" | |
40 | ||
41 | "1: ;" | |
42 | "tbegin.;" | |
43 | "beq 2f;" | |
44 | ||
45 | "bl load_vsx;" | |
46 | "tsuspend.;" | |
47 | "li 7, 1;" | |
48 | "stw 7, 0(%[cptr1]);" | |
49 | "tresume.;" | |
50 | "b .;" | |
51 | ||
52 | "tend.;" | |
53 | "li 0, 0;" | |
54 | "ori %[res], 0, 0;" | |
55 | "b 3f;" | |
56 | ||
57 | "2: ;" | |
58 | "li 0, 1;" | |
59 | "ori %[res], 0, 0;" | |
60 | "mfspr %[texasr], %[sprn_texasr];" | |
61 | ||
62 | "3: ;" | |
63 | : [res] "=r" (result), [texasr] "=r" (texasr) | |
5249497a | 64 | : [sprn_texasr] "i" (SPRN_TEXASR), [cptr1] "b" (&cptr[1]) |
f36dbfe1 | 65 | : "memory", "r0", "r1", "r3", "r4", |
11508074 AK |
66 | "r7", "r8", "r9", "r10", "r11" |
67 | ); | |
68 | ||
69 | if (result) { | |
70 | if (!cptr[0]) | |
71 | goto trans; | |
72 | ||
73 | shmdt((void *)cptr); | |
74 | storevsx(fp_store, 0); | |
75 | ret = compare_vsx_vmx(fp_store, fp_load_ckpt_new); | |
76 | if (ret) | |
77 | exit(1); | |
78 | exit(0); | |
79 | } | |
80 | shmdt((void *)cptr); | |
81 | exit(1); | |
82 | } | |
83 | ||
84 | int trace_tm_vsx(pid_t child) | |
85 | { | |
86 | unsigned long vsx[VSX_MAX]; | |
87 | unsigned long vmx[VMX_MAX + 2][2]; | |
88 | ||
89 | FAIL_IF(start_trace(child)); | |
90 | FAIL_IF(show_vsx(child, vsx)); | |
91 | FAIL_IF(validate_vsx(vsx, fp_load)); | |
92 | FAIL_IF(show_vmx(child, vmx)); | |
93 | FAIL_IF(validate_vmx(vmx, fp_load)); | |
94 | FAIL_IF(show_vsx_ckpt(child, vsx)); | |
95 | FAIL_IF(validate_vsx(vsx, fp_load_ckpt)); | |
96 | FAIL_IF(show_vmx_ckpt(child, vmx)); | |
97 | FAIL_IF(validate_vmx(vmx, fp_load_ckpt)); | |
98 | memset(vsx, 0, sizeof(vsx)); | |
99 | memset(vmx, 0, sizeof(vmx)); | |
100 | ||
101 | load_vsx_vmx(fp_load_ckpt_new, vsx, vmx); | |
102 | ||
103 | FAIL_IF(write_vsx_ckpt(child, vsx)); | |
104 | FAIL_IF(write_vmx_ckpt(child, vmx)); | |
105 | pptr[0] = 1; | |
106 | FAIL_IF(stop_trace(child)); | |
107 | return TEST_PASS; | |
108 | } | |
109 | ||
110 | int ptrace_tm_vsx(void) | |
111 | { | |
112 | pid_t pid; | |
113 | int ret, status, i; | |
114 | ||
115 | SKIP_IF(!have_htm()); | |
116 | shm_id = shmget(IPC_PRIVATE, sizeof(int) * 2, 0777|IPC_CREAT); | |
117 | ||
118 | for (i = 0; i < 128; i++) { | |
119 | fp_load[i] = 1 + rand(); | |
120 | fp_load_ckpt[i] = 1 + 2 * rand(); | |
121 | fp_load_ckpt_new[i] = 1 + 3 * rand(); | |
122 | } | |
123 | ||
124 | pid = fork(); | |
125 | if (pid < 0) { | |
126 | perror("fork() failed"); | |
127 | return TEST_FAIL; | |
128 | } | |
129 | ||
130 | if (pid == 0) | |
131 | tm_vsx(); | |
132 | ||
133 | if (pid) { | |
134 | pptr = (unsigned long *)shmat(shm_id, NULL, 0); | |
135 | while (!pptr[1]) | |
136 | asm volatile("" : : : "memory"); | |
137 | ||
138 | ret = trace_tm_vsx(pid); | |
139 | if (ret) { | |
140 | kill(pid, SIGKILL); | |
141 | shmdt((void *)pptr); | |
142 | shmctl(shm_id, IPC_RMID, NULL); | |
143 | return TEST_FAIL; | |
144 | } | |
145 | ||
146 | shmdt((void *)pptr); | |
147 | ret = wait(&status); | |
148 | shmctl(shm_id, IPC_RMID, NULL); | |
149 | if (ret != pid) { | |
150 | printf("Child's exit status not captured\n"); | |
151 | return TEST_FAIL; | |
152 | } | |
153 | ||
154 | return (WIFEXITED(status) && WEXITSTATUS(status)) ? TEST_FAIL : | |
155 | TEST_PASS; | |
156 | } | |
157 | return TEST_PASS; | |
158 | } | |
159 | ||
160 | int main(int argc, char *argv[]) | |
161 | { | |
162 | return test_harness(ptrace_tm_vsx, "ptrace_tm_vsx"); | |
163 | } |