1 /* Test case for i386 preserved registers in dynamic linker.
2 Copyright (C) 2015-2023 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <dlfcn.h>
20 #include <stdint.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <stddef.h>
24 #include <string.h>
25 #include <unistd.h>
26 #include <link.h>
27 #include <bits/wordsize.h>
28 #include <gnu/lib-names.h>
29
30 unsigned int
31 la_version (unsigned int v)
32 {
33 setlinebuf (stdout);
34
35 printf ("version: %u\n", v);
36
37 char buf[20];
38 sprintf (buf, "%u", v);
39
40 return v;
41 }
42
43 void
44 la_activity (uintptr_t *cookie, unsigned int flag)
45 {
46 const char *flagstr;
47 switch (flag)
48 {
49 case LA_ACT_CONSISTENT:
50 flagstr = "consistent";
51 break;
52 case LA_ACT_ADD:
53 flagstr = "add";
54 break;
55 case LA_ACT_DELETE:
56 flagstr = "delete";
57 break;
58 default:
59 printf ("activity: unknown activity %u\n", flag);
60 return;
61 }
62 printf ("activity: %s\n", flagstr);
63 }
64
65 char *
66 la_objsearch (const char *name, uintptr_t *cookie, unsigned int flag)
67 {
68 const char *flagstr;
69 switch (flag)
70 {
71 case LA_SER_ORIG:
72 flagstr = "LA_SET_ORIG";
73 break;
74 case LA_SER_LIBPATH:
75 flagstr = "LA_SER_LIBPATH";
76 break;
77 case LA_SER_RUNPATH:
78 flagstr = "LA_SER_RUNPATH";
79 break;
80 case LA_SER_CONFIG:
81 flagstr = "LA_SER_CONFIG";
82 break;
83 case LA_SER_DEFAULT:
84 flagstr = "LA_SER_DEFAULT";
85 break;
86 case LA_SER_SECURE:
87 flagstr = "LA_SER_SECURE";
88 break;
89 default:
90 printf ("objsearch: %s, unknown flag %d\n", name, flag);
91 return (char *) name;
92 }
93
94 printf ("objsearch: %s, %s\n", name, flagstr);
95 return (char *) name;
96 }
97
98 unsigned int
99 la_objopen (struct link_map *l, Lmid_t lmid, uintptr_t *cookie)
100 {
101 printf ("objopen: %ld, %s\n", lmid, l->l_name);
102
103 return 3;
104 }
105
106 void
107 la_preinit (uintptr_t *cookie)
108 {
109 printf ("preinit\n");
110 }
111
112 unsigned int
113 la_objclose (uintptr_t *cookie)
114 {
115 printf ("objclose\n");
116 return 0;
117 }
118
119 uintptr_t
120 la_symbind32 (Elf32_Sym *sym, unsigned int ndx, uintptr_t *refcook,
121 uintptr_t *defcook, unsigned int *flags, const char *symname)
122 {
123 printf ("symbind32: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
124 symname, (long int) sym->st_value, ndx, *flags);
125
126 return sym->st_value;
127 }
128
129 #include "tst-audit.h"
130
131 ElfW(Addr)
132 pltenter (ElfW(Sym) *sym, unsigned int ndx, uintptr_t *refcook,
133 uintptr_t *defcook, La_regs *regs, unsigned int *flags,
134 const char *symname, long int *framesizep)
135 {
136 printf ("pltenter: symname=%s, st_value=%#lx, ndx=%u, flags=%u\n",
137 symname, (long int) sym->st_value, ndx, *flags);
138
139 if (strcmp (symname, "audit1_test") == 0
140 || strcmp (symname, "audit2_test") == 0)
141 {
142 if (regs->lr_eax != 1
143 || regs->lr_edx != 2
144 || regs->lr_ecx != 3)
145 abort ();
146
147 *framesizep = 200;
148 }
149
150 return sym->st_value;
151 }
152
153 unsigned int
154 pltexit (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 ("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 if (strcmp (symname, "audit1_test") == 0
163 || strcmp (symname, "audit2_test") == 0)
164 {
165 if (inregs->lr_eax != 1
166 || inregs->lr_edx != 2
167 || inregs->lr_ecx != 3)
168 abort ();
169
170 if (strcmp (symname, "audit1_test") == 0)
171 {
172 long long x = ((unsigned long long) outregs->lrv_eax
173 | (unsigned long long) outregs->lrv_edx << 32);
174
175 if (x != 30)
176 abort ();
177 }
178 else if (strcmp (symname, "audit2_test") == 0)
179 {
180 if (outregs->lrv_st0 != 30)
181 abort ();
182 }
183 }
184
185 return 0;
186 }