1 /* PPC64 specific symbolic name handling.
2 Copyright (C) 2004 Red Hat, Inc.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2004.
4
5 This program is Open Source software; you can redistribute it and/or
6 modify it under the terms of the Open Software License version 1.0 as
7 published by the Open Source Initiative.
8
9 You should have received a copy of the Open Software License along
10 with this program; if not, you may obtain a copy of the Open Software
11 License version 1.0 from http://www.opensource.org/licenses/osl.php or
12 by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
13 3001 King Ranch Road, Ukiah, CA 95482. */
14
15 #ifdef HAVE_CONFIG_H
16 # include <config.h>
17 #endif
18
19 #include <assert.h>
20 #include <elf.h>
21 #include <stddef.h>
22
23 #include <libebl_ppc64.h>
24
25
26 /* Return of the backend. */
27 const char *
ppc64_backend_name(void)28 ppc64_backend_name (void)
29 {
30 return "ppc64";
31 }
32
33
34 /* Relocation mapping table. */
35 static struct
36 {
37 const char *name;
38 enum { both = 0, rel = 1, exec = 2 } appear;
39 } reloc_map_table[] =
40 {
41 // XXX Check all the appear values.
42 [R_PPC64_NONE] = { "R_PPC64_NONE", both },
43 [R_PPC64_ADDR32] = { "R_PPC64_ADDR32", both },
44 [R_PPC64_ADDR24] = { "R_PPC64_ADDR24", both },
45 [R_PPC64_ADDR16] = { "R_PPC64_ADDR16", both },
46 [R_PPC64_ADDR16_LO] = { "R_PPC64_ADDR16_LO", both },
47 [R_PPC64_ADDR16_HI] = { "R_PPC64_ADDR16_HI", both },
48 [R_PPC64_ADDR16_HA] = { "R_PPC64_ADDR16_HA", both },
49 [R_PPC64_ADDR14] = { "R_PPC64_ADDR14", both },
50 [R_PPC64_ADDR14_BRTAKEN] = { "R_PPC64_ADDR14_BRTAKEN", exec },
51 [R_PPC64_ADDR14_BRNTAKEN] = { "R_PPC64_ADDR14_BRNTAKEN", exec },
52 [R_PPC64_REL24] = { "R_PPC64_REL24", both },
53 [R_PPC64_REL14] = { "R_PPC64_REL14", both },
54 [R_PPC64_REL14_BRTAKEN] = { "R_PPC64_REL14_BRTAKEN", exec },
55 [R_PPC64_REL14_BRNTAKEN] = { "R_PPC64_REL14_BRNTAKEN", exec },
56 [R_PPC64_GOT16] = { "R_PPC64_GOT16", rel },
57 [R_PPC64_GOT16_LO] = { "R_PPC64_GOT16_LO", rel },
58 [R_PPC64_GOT16_HI] = { "R_PPC64_GOT16_HI", rel },
59 [R_PPC64_GOT16_HA] = { "R_PPC64_GOT16_HA", rel },
60 [R_PPC64_COPY] = { "R_PPC64_COPY", exec },
61 [R_PPC64_GLOB_DAT] = { "R_PPC64_GLOB_DAT", exec },
62 [R_PPC64_JMP_SLOT] = { "R_PPC64_JMP_SLOT", exec },
63 [R_PPC64_RELATIVE] = { "R_PPC64_RELATIVE", exec },
64 [R_PPC64_UADDR32] = { "R_PPC64_UADDR32", exec },
65 [R_PPC64_UADDR16] = { "R_PPC64_UADDR16", exec },
66 [R_PPC64_REL32] = { "R_PPC64_REL32", exec },
67 [R_PPC64_PLT32] = { "R_PPC64_PLT32", exec },
68 [R_PPC64_PLTREL32] = { "R_PPC64_PLTREL32", both },
69 [R_PPC64_PLT16_LO] = { "R_PPC64_PLT16_LO", both },
70 [R_PPC64_PLT16_HI] = { "R_PPC64_PLT16_HI", both },
71 [R_PPC64_PLT16_HA] = { "R_PPC64_PLT16_HA", both },
72 [R_PPC64_SECTOFF] = { "R_PPC64_SECTOFF", both },
73 [R_PPC64_SECTOFF_LO] = { "R_PPC64_SECTOFF_LO", both },
74 [R_PPC64_SECTOFF_HI] = { "R_PPC64_SECTOFF_HI", both },
75 [R_PPC64_SECTOFF_HA] = { "R_PPC64_SECTOFF_HA", both },
76 [R_PPC64_ADDR30] = { "R_PPC64_ADDR30", both },
77 [R_PPC64_ADDR64] = { "R_PPC64_ADDR64", both },
78 [R_PPC64_ADDR16_HIGHER] = { "R_PPC64_ADDR16_HIGHER", both },
79 [R_PPC64_ADDR16_HIGHERA] = { "R_PPC64_ADDR16_HIGHERA", both },
80 [R_PPC64_ADDR16_HIGHEST] = { "R_PPC64_ADDR16_HIGHEST", both },
81 [R_PPC64_ADDR16_HIGHESTA] = { "R_PPC64_ADDR16_HIGHESTA", both },
82 [R_PPC64_UADDR64] = { "R_PPC64_UADDR64", both },
83 [R_PPC64_REL64] = { "R_PPC64_REL64", both },
84 [R_PPC64_PLT64] = { "R_PPC64_PLT64", both },
85 [R_PPC64_PLTREL64] = { "R_PPC64_PLTREL64", both },
86 [R_PPC64_TOC16] = { "R_PPC64_TOC16", both },
87 [R_PPC64_TOC16_LO] = { "R_PPC64_TOC16_LO", both },
88 [R_PPC64_TOC16_HI] = { "R_PPC64_TOC16_HI", both },
89 [R_PPC64_TOC16_HA] = { "R_PPC64_TOC16_HA", both },
90 [R_PPC64_TOC] = { "R_PPC64_TOC", both },
91 [R_PPC64_PLTGOT16] = { "R_PPC64_PLTGOT16", both },
92 [R_PPC64_PLTGOT16_LO] = { "R_PPC64_PLTGOT16_LO", both },
93 [R_PPC64_PLTGOT16_HI] = { "R_PPC64_PLTGOT16_HI", both },
94 [R_PPC64_PLTGOT16_HA] = { "R_PPC64_PLTGOT16_HA", both },
95 [R_PPC64_ADDR16_DS] = { "R_PPC64_ADDR16_DS", both },
96 [R_PPC64_ADDR16_LO_DS] = { "R_PPC64_ADDR16_LO_DS", both },
97 [R_PPC64_GOT16_DS] = { "R_PPC64_GOT16_DS", both },
98 [R_PPC64_GOT16_LO_DS] = { "R_PPC64_GOT16_LO_DS", both },
99 [R_PPC64_PLT16_LO_DS] = { "R_PPC64_PLT16_LO_DS", both },
100 [R_PPC64_SECTOFF_DS] = { "R_PPC64_SECTOFF_DS", both },
101 [R_PPC64_SECTOFF_LO_DS] = { "R_PPC64_SECTOFF_LO_DS", both },
102 [R_PPC64_TOC16_DS] = { "R_PPC64_TOC16_DS", both },
103 [R_PPC64_TOC16_LO_DS] = { "R_PPC64_TOC16_LO_DS", both },
104 [R_PPC64_PLTGOT16_DS] = { "R_PPC64_PLTGOT16_DS", both },
105 [R_PPC64_PLTGOT16_LO_DS] = { "R_PPC64_PLTGOT16_LO_DS", both },
106 [R_PPC64_TLS] = { "R_PPC64_TLS", both },
107 [R_PPC64_DTPMOD64] = { "R_PPC64_DTPMOD64", both },
108 [R_PPC64_TPREL16] = { "R_PPC64_TPREL16", both },
109 [R_PPC64_TPREL16_LO] = { "R_PPC64_TPREL16_LO", both },
110 [R_PPC64_TPREL16_HI] = { "R_PPC64_TPREL16_HI", both },
111 [R_PPC64_TPREL16_HA] = { "R_PPC64_TPREL16_HA", both },
112 [R_PPC64_TPREL64] = { "R_PPC64_TPREL64", both },
113 [R_PPC64_DTPREL16] = { "R_PPC64_DTPREL16", both },
114 [R_PPC64_DTPREL16_LO] = { "R_PPC64_DTPREL16_LO", both },
115 [R_PPC64_DTPREL16_HI] = { "R_PPC64_DTPREL16_HI", both },
116 [R_PPC64_DTPREL16_HA] = { "R_PPC64_DTPREL16_HA", both },
117 [R_PPC64_DTPREL64] = { "R_PPC64_DTPREL64", both },
118 [R_PPC64_GOT_TLSGD16] = { "R_PPC64_GOT_TLSGD16", both },
119 [R_PPC64_GOT_TLSGD16_LO] = { "R_PPC64_GOT_TLSGD16_LO", both },
120 [R_PPC64_GOT_TLSGD16_HI] = { "R_PPC64_GOT_TLSGD16_HI", both },
121 [R_PPC64_GOT_TLSGD16_HA] = { "R_PPC64_GOT_TLSGD16_HA", both },
122 [R_PPC64_GOT_TLSLD16] = { "R_PPC64_GOT_TLSLD16", both },
123 [R_PPC64_GOT_TLSLD16_LO] = { "R_PPC64_GOT_TLSLD16_LO", both },
124 [R_PPC64_GOT_TLSLD16_HI] = { "R_PPC64_GOT_TLSLD16_HI", both },
125 [R_PPC64_GOT_TLSLD16_HA] = { "R_PPC64_GOT_TLSLD16_HA", both },
126 [R_PPC64_GOT_TPREL16_DS] = { "R_PPC64_GOT_TPREL16_DS", both },
127 [R_PPC64_GOT_TPREL16_LO_DS] = { "R_PPC64_GOT_TPREL16_LO_DS", both },
128 [R_PPC64_GOT_TPREL16_HI] = { "R_PPC64_GOT_TPREL16_HI", both },
129 [R_PPC64_GOT_TPREL16_HA] = { "R_PPC64_GOT_TPREL16_HA", both },
130 [R_PPC64_GOT_DTPREL16_DS] = { "R_PPC64_GOT_DTPREL16_DS", both },
131 [R_PPC64_GOT_DTPREL16_LO_DS] = { "R_PPC64_GOT_DTPREL16_LO_DS", both },
132 [R_PPC64_GOT_DTPREL16_HI] = { "R_PPC64_GOT_DTPREL16_HI", both },
133 [R_PPC64_GOT_DTPREL16_HA] = { "R_PPC64_GOT_DTPREL16_HA", both },
134 [R_PPC64_TPREL16_DS] = { "R_PPC64_TPREL16_DS", both },
135 [R_PPC64_TPREL16_LO_DS] = { "R_PPC64_TPREL16_LO_DS", both },
136 [R_PPC64_TPREL16_HIGHER] = { "R_PPC64_TPREL16_HIGHER", both },
137 [R_PPC64_TPREL16_HIGHERA] = { "R_PPC64_TPREL16_HIGHERA", both },
138 [R_PPC64_TPREL16_HIGHEST] = { "R_PPC64_TPREL16_HIGHEST", both },
139 [R_PPC64_TPREL16_HIGHESTA] = { "R_PPC64_TPREL16_HIGHESTA", both },
140 [R_PPC64_DTPREL16_DS] = { "R_PPC64_DTPREL16_DS", both },
141 [R_PPC64_DTPREL16_LO_DS] = { "R_PPC64_DTPREL16_LO_DS", both },
142 [R_PPC64_DTPREL16_HIGHER] = { "R_PPC64_DTPREL16_HIGHER", both },
143 [R_PPC64_DTPREL16_HIGHERA] = { "R_PPC64_DTPREL16_HIGHERA", both },
144 [R_PPC64_DTPREL16_HIGHEST] = { "R_PPC64_DTPREL16_HIGHEST", both },
145 [R_PPC64_DTPREL16_HIGHESTA] = { "R_PPC64_DTPREL16_HIGHESTA", both }
146 };
147
148
149 /* Determine relocation type string for PPC. */
150 const char *
ppc64_reloc_type_name(int type,char * buf,size_t len)151 ppc64_reloc_type_name (int type, char *buf, size_t len)
152 {
153 if (type < R_PPC64_NONE || type >= R_PPC64_NUM)
154 return NULL;
155
156 return reloc_map_table[type].name;
157 }
158
159
160 /* Check for correct relocation type. */
161 bool
ppc64_reloc_type_check(int type)162 ppc64_reloc_type_check (int type)
163 {
164 return (type >= R_PPC64_NONE && type < R_PPC64_NUM
165 && reloc_map_table[type].name != NULL) ? true : false;
166 }
167
168
169 /* Check for correct relocation type use. */
170 bool
ppc64_reloc_valid_use(Elf * elf,int type)171 ppc64_reloc_valid_use (Elf *elf, int type)
172 {
173 if (type < R_PPC64_NONE || type >= R_PPC64_NUM
174 || reloc_map_table[type].name == NULL)
175 return false;
176
177 Elf64_Ehdr *ehdr = elf64_getehdr (elf);
178 assert (ehdr != NULL);
179
180 if (reloc_map_table[type].appear == rel)
181 return ehdr->e_type == ET_REL;
182
183 if (reloc_map_table[type].appear == exec)
184 return ehdr->e_type != ET_REL;
185
186 assert (reloc_map_table[type].appear == both);
187 return true;
188 }
189
190
191 const char *
ppc64_dynamic_tag_name(int64_t tag,char * buf,size_t len)192 ppc64_dynamic_tag_name (int64_t tag, char *buf, size_t len)
193 {
194 switch (tag)
195 {
196 case DT_PPC64_GLINK:
197 return "PPC64_GLINK";
198 case DT_PPC64_OPD:
199 return "PPC64_OPD";
200 case DT_PPC64_OPDSZ:
201 return "PPC64_OPDSZ";
202 default:
203 break;
204 }
205 return NULL;
206 }
207