1 /* Enumerate available IFUNC implementations of a function.  PowerPC32 version.
2    Copyright (C) 2013-2022 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 <assert.h>
20 #include <string.h>
21 #include <wchar.h>
22 #include <ldsodefs.h>
23 #include <ifunc-impl-list.h>
24 
25 size_t
__libc_ifunc_impl_list(const char * name,struct libc_ifunc_impl * array,size_t max)26 __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
27 			size_t max)
28 {
29   size_t i = max;
30 
31   unsigned long int hwcap = GLRO(dl_hwcap);
32   /* hwcap contains only the latest supported ISA, the code checks which is
33      and fills the previous supported ones.  */
34   if (hwcap & PPC_FEATURE_ARCH_2_06)
35     hwcap |= PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_POWER5_PLUS |
36              PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
37   else if (hwcap & PPC_FEATURE_ARCH_2_05)
38     hwcap |= PPC_FEATURE_POWER5_PLUS | PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
39   else if (hwcap & PPC_FEATURE_POWER5_PLUS)
40     hwcap |= PPC_FEATURE_POWER5 | PPC_FEATURE_POWER4;
41   else if (hwcap & PPC_FEATURE_POWER5)
42     hwcap |= PPC_FEATURE_POWER4;
43 
44 #ifdef SHARED
45   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memcpy.c.  */
46   IFUNC_IMPL (i, name, memcpy,
47 	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_HAS_VSX,
48 			      __memcpy_power7)
49 	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_06,
50 			      __memcpy_a2)
51 	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_ARCH_2_05,
52 			      __memcpy_power6)
53 	      IFUNC_IMPL_ADD (array, i, memcpy, hwcap & PPC_FEATURE_CELL_BE,
54 			      __memcpy_cell)
55 	      IFUNC_IMPL_ADD (array, i, memcpy, 1, __memcpy_ppc))
56 
57   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memmove.c.  */
58   IFUNC_IMPL (i, name, memmove,
59 	      IFUNC_IMPL_ADD (array, i, memmove, hwcap & PPC_FEATURE_HAS_VSX,
60 			      __memmove_power7)
61 	      IFUNC_IMPL_ADD (array, i, memmove, 1, __memmove_ppc))
62 
63   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memset.c.  */
64   IFUNC_IMPL (i, name, memset,
65 	      IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_HAS_VSX,
66 			      __memset_power7)
67 	      IFUNC_IMPL_ADD (array, i, memset, hwcap & PPC_FEATURE_ARCH_2_05,
68 			      __memset_power6)
69 	      IFUNC_IMPL_ADD (array, i, memset, 1, __memset_ppc))
70 
71   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strlen.c.  */
72   IFUNC_IMPL (i, name, strlen,
73 	      IFUNC_IMPL_ADD (array, i, strlen, hwcap & PPC_FEATURE_HAS_VSX,
74 			      __strlen_power7)
75 	      IFUNC_IMPL_ADD (array, i, strlen, 1,
76 			      __strlen_ppc))
77 
78   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strnlen.c.  */
79   IFUNC_IMPL (i, name, strnlen,
80 	      IFUNC_IMPL_ADD (array, i, strnlen, hwcap & PPC_FEATURE_HAS_VSX,
81 			      __strnlen_power7)
82 	      IFUNC_IMPL_ADD (array, i, strnlen, 1,
83 			      __strnlen_ppc))
84 
85   /* Support sysdeps/powerpc/powerpc32/multiarch/strncmp.c.  */
86   IFUNC_IMPL (i, name, strncmp,
87 	      IFUNC_IMPL_ADD (array, i, strncmp, hwcap & PPC_FEATURE_HAS_VSX,
88 			      __strncmp_power7)
89 	      IFUNC_IMPL_ADD (array, i, strncmp, 1,
90 			      __strncmp_ppc))
91 #endif
92 
93   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c.  */
94   IFUNC_IMPL (i, name, memcmp,
95 	      IFUNC_IMPL_ADD (array, i, memcmp, hwcap & PPC_FEATURE_HAS_VSX,
96 			      __memcmp_power7)
97 	      IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_ppc))
98 
99   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c.  */
100   IFUNC_IMPL (i, name, mempcpy,
101 	      IFUNC_IMPL_ADD (array, i, mempcpy,
102 			      hwcap & PPC_FEATURE_HAS_VSX,
103 			      __mempcpy_power7)
104 	      IFUNC_IMPL_ADD (array, i, mempcpy, 1,
105 			      __mempcpy_ppc))
106 
107   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memchr.c.  */
108   IFUNC_IMPL (i, name, memchr,
109 	      IFUNC_IMPL_ADD (array, i, memchr,
110 			      hwcap & PPC_FEATURE_HAS_VSX,
111 			      __memchr_power7)
112 	      IFUNC_IMPL_ADD (array, i, memchr, 1,
113 			      __memchr_ppc))
114 
115   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/memrchr.c.  */
116   IFUNC_IMPL (i, name, memrchr,
117 	      IFUNC_IMPL_ADD (array, i, memrchr,
118 			      hwcap & PPC_FEATURE_HAS_VSX,
119 			      __memrchr_power7)
120 	      IFUNC_IMPL_ADD (array, i, memrchr, 1,
121 			      __memrchr_ppc))
122 
123   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/rawmemchr.c.  */
124   IFUNC_IMPL (i, name, rawmemchr,
125 	      IFUNC_IMPL_ADD (array, i, rawmemchr,
126 			      hwcap & PPC_FEATURE_HAS_VSX,
127 			      __rawmemchr_power7)
128 	      IFUNC_IMPL_ADD (array, i, rawmemchr, 1,
129 			      __rawmemchr_ppc))
130 
131   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp.c.  */
132   IFUNC_IMPL (i, name, strcasecmp,
133 	      IFUNC_IMPL_ADD (array, i, strcasecmp,
134 			      hwcap & PPC_FEATURE_HAS_VSX,
135 			      __strcasecmp_power7)
136 	      IFUNC_IMPL_ADD (array, i, strcasecmp, 1, __strcasecmp_ppc))
137 
138   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strcasecmp_l.c.  */
139   IFUNC_IMPL (i, name, strcasecmp_l,
140 	      IFUNC_IMPL_ADD (array, i, strcasecmp_l,
141 			      hwcap & PPC_FEATURE_HAS_VSX,
142 			      __strcasecmp_l_power7)
143 	      IFUNC_IMPL_ADD (array, i, strcasecmp_l, 1,
144 			      __strcasecmp_l_ppc))
145 
146   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strncase.c.  */
147   IFUNC_IMPL (i, name, strncasecmp,
148 	      IFUNC_IMPL_ADD (array, i, strncasecmp,
149 			      hwcap & PPC_FEATURE_HAS_VSX,
150 			      __strncasecmp_power7)
151 	      IFUNC_IMPL_ADD (array, i, strncasecmp, 1, __strncasecmp_ppc))
152 
153   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strncase_l.c.  */
154   IFUNC_IMPL (i, name, strncasecmp_l,
155 	      IFUNC_IMPL_ADD (array, i, strncasecmp_l,
156 			      hwcap & PPC_FEATURE_HAS_VSX,
157 			      __strncasecmp_l_power7)
158 	      IFUNC_IMPL_ADD (array, i, strncasecmp_l, 1,
159 			      __strncasecmp_l_ppc))
160 
161   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strchrnul.c.  */
162   IFUNC_IMPL (i, name, strchrnul,
163 	      IFUNC_IMPL_ADD (array, i, strchrnul,
164 			      hwcap & PPC_FEATURE_HAS_VSX,
165 			      __strchrnul_power7)
166 	      IFUNC_IMPL_ADD (array, i, strchrnul, 1,
167 			      __strchrnul_ppc))
168 
169   /* Support sysdeps/powerpc/powerpc32/power4/multiarch/strchr.c.  */
170   IFUNC_IMPL (i, name, strchr,
171 	      IFUNC_IMPL_ADD (array, i, strchr,
172 			      hwcap & PPC_FEATURE_HAS_VSX,
173 			      __strchr_power7)
174 	      IFUNC_IMPL_ADD (array, i, strchr, 1,
175 			      __strchr_ppc))
176 
177   return 0;
178 }
179