1 /* Verify that changing AVX registers in audit library won't affect
2 function parameter passing/return. */
3
4 #include <dlfcn.h>
5 #include <link.h>
6 #include <stddef.h>
7 #include <stdint.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <bits/wordsize.h>
13 #include <gnu/lib-names.h>
14
15 unsigned int
la_version(unsigned int v)16 la_version (unsigned int v)
17 {
18 setlinebuf (stdout);
19
20 printf ("version: %u\n", v);
21
22 char buf[20];
23 sprintf (buf, "%u", v);
24
25 return v;
26 }
27
28 void
la_activity(uintptr_t * cookie,unsigned int flag)29 la_activity (uintptr_t *cookie, unsigned int flag)
30 {
31 if (flag == LA_ACT_CONSISTENT)
32 printf ("activity: consistent\n");
33 else if (flag == LA_ACT_ADD)
34 printf ("activity: add\n");
35 else if (flag == LA_ACT_DELETE)
36 printf ("activity: delete\n");
37 else
38 printf ("activity: unknown activity %u\n", flag);
39 }
40
41 char *
la_objsearch(const char * name,uintptr_t * cookie,unsigned int flag)42 la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
43 {
44 char buf[100];
45 const char *flagstr;
46 if (flag == LA_SER_ORIG)
47 flagstr = "LA_SET_ORIG";
48 else if (flag == LA_SER_LIBPATH)
49 flagstr = "LA_SER_LIBPATH";
50 else if (flag == LA_SER_RUNPATH)
51 flagstr = "LA_SER_RUNPATH";
52 else if (flag == LA_SER_CONFIG)
53 flagstr = "LA_SER_CONFIG";
54 else if (flag == LA_SER_DEFAULT)
55 flagstr = "LA_SER_DEFAULT";
56 else if (flag == LA_SER_SECURE)
57 flagstr = "LA_SER_SECURE";
58 else
59 {
60 sprintf (buf, "unknown flag %d", flag);
61 flagstr = buf;
62 }
63 printf ("objsearch: %s, %s\n", name, flagstr);
64
65 return (char *) name;
66 }
67
68 unsigned int
la_objopen(struct link_map * l,Lmid_t lmid,uintptr_t * cookie)69 la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
70 {
71 printf ("objopen: %ld, %s\n", lmid, l->l_name);
72
73 return 3;
74 }
75
76 void
la_preinit(uintptr_t * cookie)77 la_preinit (uintptr_t *cookie)
78 {
79 printf ("preinit\n");
80 }
81
82 unsigned int
la_objclose(uintptr_t * cookie)83 la_objclose (uintptr_t *cookie)
84 {
85 printf ("objclose\n");
86 return 0;
87 }
88
89 uintptr_t
la_symbind32(Elf32_Sym * sym,unsigned int ndx,uintptr_t * refcook,uintptr_t * defcook,unsigned int * flags,const char * symname)90 la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
91 uintptr_t *defcook, unsigned int *flags, const char *symname)
92 {
93 printf ("symbind32: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
94 symname, (long int) sym->st_value, ndx, *flags);
95
96 return sym->st_value;
97 }
98
99 uintptr_t
la_symbind64(Elf64_Sym * sym,unsigned int ndx,uintptr_t * refcook,uintptr_t * defcook,unsigned int * flags,const char * symname)100 la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
101 uintptr_t *defcook, unsigned int *flags, const char *symname)
102 {
103 printf ("symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
104 symname, (long int) sym->st_value, ndx, *flags);
105
106 return sym->st_value;
107 }
108
109 #include <tst-audit.h>
110
111 #ifdef __AVX__
112 #include <immintrin.h>
113 #include <cpuid.h>
114
115 static int avx = -1;
116
117 static inline int
118 __attribute ((always_inline))
check_avx(void)119 check_avx (void)
120 {
121 if (avx == -1)
122 {
123 unsigned int eax, ebx, ecx, edx;
124
125 if (__get_cpuid (1, &eax, &ebx, &ecx, &edx)
126 && (ecx & bit_AVX))
127 avx = 1;
128 else
129 avx = 0;
130 }
131 return avx;
132 }
133 #else
134 #include <emmintrin.h>
135 #endif
136
137 ElfW(Addr)
pltenter(ElfW (Sym)* sym,unsigned int ndx,uintptr_t * refcook,uintptr_t * defcook,La_regs * regs,unsigned int * flags,const char * symname,long int * framesizep)138 pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
139 uintptr_t *defcook, La_regs *regs, unsigned int *flags,
140 const char *symname, long int *framesizep)
141 {
142 printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
143 symname, (long int) sym->st_value, ndx, *flags);
144
145 #ifdef __AVX__
146 if (check_avx () && strcmp (symname, "audit_test") == 0)
147 {
148 int i;
149 __m128i xmm;
150 __m256i ymm;
151
152 for (i = 0; i < 8; i += 2)
153 {
154 xmm = _mm_set1_epi32 (i + 1);
155 if (memcmp (®s->lr_xmm[i], &xmm, sizeof (xmm))
156 || memcmp (®s->lr_vector[i], &xmm, sizeof (xmm)))
157 abort ();
158 regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i + 0x100);
159 regs->lr_vector[i].xmm[0] = regs->lr_xmm[i];
160
161 ymm = _mm256_set1_epi32 (i + 2);
162 if (memcmp (®s->lr_xmm[i + 1],
163 ®s->lr_vector[i + 1].xmm[0], sizeof (xmm))
164 || memcmp (®s->lr_vector[i + 1], &ymm, sizeof (ymm)))
165 abort ();
166 regs->lr_vector[i + 1].ymm[0]
167 = (La_x86_64_ymm) _mm256_set1_epi32 (i + 0x101);
168 regs->lr_xmm[i + 1] = regs->lr_vector[i + 1].xmm[0];
169 }
170
171 ymm = _mm256_set1_epi32 (-1);
172 asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
173 asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
174 asm volatile ("vmovdqa %0, %%ymm2" : : "x" (ymm) : "xmm2" );
175 asm volatile ("vmovdqa %0, %%ymm3" : : "x" (ymm) : "xmm3" );
176 asm volatile ("vmovdqa %0, %%ymm4" : : "x" (ymm) : "xmm4" );
177 asm volatile ("vmovdqa %0, %%ymm5" : : "x" (ymm) : "xmm5" );
178 asm volatile ("vmovdqa %0, %%ymm6" : : "x" (ymm) : "xmm6" );
179 asm volatile ("vmovdqa %0, %%ymm7" : : "x" (ymm) : "xmm7" );
180
181 *framesizep = 1024;
182 }
183 #endif
184
185 return sym->st_value;
186 }
187
188 unsigned int
pltexit(ElfW (Sym)* sym,unsigned int ndx,uintptr_t * refcook,uintptr_t * defcook,const La_regs * inregs,La_retval * outregs,const char * symname)189 pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
190 uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
191 const char *symname)
192 {
193 printf ("pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
194 symname, (long int) sym->st_value, ndx,
195 (ptrdiff_t) outregs->int_retval);
196
197 #ifdef __AVX__
198 if (check_avx () && strcmp (symname, "audit_test") == 0)
199 {
200 int i;
201
202 __m256i ymm = _mm256_set1_epi32 (0x12349876);;
203 if (memcmp (&outregs->lrv_vector0, &ymm, sizeof (ymm)))
204 abort ();
205
206 __m128i xmm;
207
208 for (i = 0; i < 8; i += 2)
209 {
210 xmm = _mm_set1_epi32 (i + 0x100);
211 if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm))
212 || memcmp (&inregs->lr_vector[i], &xmm, sizeof (xmm)))
213 abort ();
214
215 ymm = _mm256_set1_epi32 (i + 0x101);
216 if (memcmp (&inregs->lr_xmm[i + 1],
217 &inregs->lr_vector[i + 1].xmm[0], sizeof (xmm))
218 || memcmp (&inregs->lr_vector[i + 1], &ymm, sizeof (ymm)))
219 abort ();
220 }
221
222 outregs->lrv_vector0.ymm[0]
223 = (La_x86_64_ymm) _mm256_set1_epi32 (0x98abcdef);
224
225 ymm = _mm256_set1_epi32 (-1);
226 asm volatile ("vmovdqa %0, %%ymm0" : : "x" (ymm) : "xmm0" );
227 asm volatile ("vmovdqa %0, %%ymm1" : : "x" (ymm) : "xmm1" );
228 }
229 #endif
230
231 return 0;
232 }
233