1/* Verify that changing xmm 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#include <emmintrin.h>
15
16unsigned int
17la_version (unsigned int v)
18{
19 setlinebuf (stdout);
20
21 printf (format: "version: %u\n", v);
22
23 char buf[20];
24 sprintf (buf, "%u", v);
25
26 return v;
27}
28
29void
30la_activity (uintptr_t *cookie, unsigned int flag)
31{
32 if (flag == LA_ACT_CONSISTENT)
33 printf (format: "activity: consistent\n");
34 else if (flag == LA_ACT_ADD)
35 printf (format: "activity: add\n");
36 else if (flag == LA_ACT_DELETE)
37 printf (format: "activity: delete\n");
38 else
39 printf (format: "activity: unknown activity %u\n", flag);
40}
41
42char *
43la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
44{
45 char buf[100];
46 const char *flagstr;
47 if (flag == LA_SER_ORIG)
48 flagstr = "LA_SET_ORIG";
49 else if (flag == LA_SER_LIBPATH)
50 flagstr = "LA_SER_LIBPATH";
51 else if (flag == LA_SER_RUNPATH)
52 flagstr = "LA_SER_RUNPATH";
53 else if (flag == LA_SER_CONFIG)
54 flagstr = "LA_SER_CONFIG";
55 else if (flag == LA_SER_DEFAULT)
56 flagstr = "LA_SER_DEFAULT";
57 else if (flag == LA_SER_SECURE)
58 flagstr = "LA_SER_SECURE";
59 else
60 {
61 sprintf (buf, "unknown flag %d", flag);
62 flagstr = buf;
63 }
64 printf (format: "objsearch: %s, %s\n", name, flagstr);
65
66 return (char *) name;
67}
68
69unsigned int
70la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
71{
72 printf (format: "objopen: %ld, %s\n", lmid, l->l_name);
73
74 return 3;
75}
76
77void
78la_preinit (uintptr_t *cookie)
79{
80 printf (format: "preinit\n");
81}
82
83unsigned int
84la_objclose (uintptr_t *cookie)
85{
86 printf (format: "objclose\n");
87 return 0;
88}
89
90uintptr_t
91la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
92 uintptr_t *defcook, unsigned int *flags, const char *symname)
93{
94 printf (format: "symbind32: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
95 symname, (long int) sym->st_value, ndx, *flags);
96
97 return sym->st_value;
98}
99
100uintptr_t
101la_symbind64 (Elf64_Sym *sym, unsigned int ndx, uintptr_t *refcook,
102 uintptr_t *defcook, unsigned int *flags, const char *symname)
103{
104 printf (format: "symbind64: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
105 symname, (long int) sym->st_value, ndx, *flags);
106
107 return sym->st_value;
108}
109
110#include <tst-audit.h>
111
112ElfW(Addr)
113pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
114 uintptr_t *defcook, La_regs *regs, unsigned int *flags,
115 const char *symname, long int *framesizep)
116{
117 printf (format: "pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
118 symname, (long int) sym->st_value, ndx, *flags);
119
120 __m128i minusone = _mm_set1_epi32 (i: -1);
121
122 if (strcmp (symname, "audit_test") == 0)
123 {
124 __m128i zero = _mm_setzero_si128 ();
125 if (memcmp (&regs->lr_xmm[0], &zero, sizeof (zero))
126 || memcmp (&regs->lr_xmm[1], &zero, sizeof (zero))
127 || memcmp (&regs->lr_xmm[2], &zero, sizeof (zero))
128 || memcmp (&regs->lr_xmm[3], &zero, sizeof (zero))
129 || memcmp (&regs->lr_xmm[4], &zero, sizeof (zero))
130 || memcmp (&regs->lr_xmm[5], &zero, sizeof (zero))
131 || memcmp (&regs->lr_xmm[6], &zero, sizeof (zero))
132 || memcmp (&regs->lr_xmm[7], &zero, sizeof (zero)))
133 abort ();
134
135 for (int i = 0; i < 8; i++)
136 regs->lr_xmm[i] = (La_x86_64_xmm) _mm_set1_epi32 (i: i + 1);
137
138 *framesizep = 1024;
139 }
140
141 asm volatile ("movdqa %0, %%xmm0" : : "x" (minusone) : "xmm0" );
142 asm volatile ("movdqa %0, %%xmm1" : : "x" (minusone) : "xmm1" );
143 asm volatile ("movdqa %0, %%xmm2" : : "x" (minusone) : "xmm2" );
144 asm volatile ("movdqa %0, %%xmm3" : : "x" (minusone) : "xmm3" );
145 asm volatile ("movdqa %0, %%xmm4" : : "x" (minusone) : "xmm4" );
146 asm volatile ("movdqa %0, %%xmm5" : : "x" (minusone) : "xmm5" );
147 asm volatile ("movdqa %0, %%xmm6" : : "x" (minusone) : "xmm6" );
148 asm volatile ("movdqa %0, %%xmm7" : : "x" (minusone) : "xmm7" );
149
150 return sym->st_value;
151}
152
153unsigned int
154pltexit (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
155 uintptr_t *defcook, const La_regs *inregs, La_retval *outregs,
156 const char *symname)
157{
158 printf (format: "pltexit: symname=%s, st_value=%#lx, ndx=%u, retval=%tu\n",
159 symname, (long int) sym->st_value, ndx,
160 (ptrdiff_t) outregs->int_retval);
161
162 __m128i xmm;
163
164 if (strcmp (symname, "audit_test") == 0)
165 {
166 __m128i zero = _mm_setzero_si128 ();
167 if (memcmp (&outregs->lrv_xmm0, &zero, sizeof (zero)))
168 abort ();
169
170 for (int i = 0; i < 8; i++)
171 {
172 xmm = _mm_set1_epi32 (i: i + 1);
173 if (memcmp (&inregs->lr_xmm[i], &xmm, sizeof (xmm)) != 0)
174 abort ();
175 }
176
177 outregs->lrv_xmm0 = (La_x86_64_xmm) _mm_set1_epi32 (i: 0x12349876);
178 }
179
180 xmm = _mm_set1_epi32 (i: -1);
181 asm volatile ("movdqa %0, %%xmm0" : : "x" (xmm) : "xmm0" );
182 asm volatile ("movdqa %0, %%xmm1" : : "x" (xmm) : "xmm1" );
183
184 return 0;
185}
186

source code of glibc/sysdeps/x86_64/tst-auditmod5b.c