1 | /* BFD back-end for HP PA-RISC ELF files.
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2 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001,
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3 | 2002, 2003 Free Software Foundation, Inc.
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4 |
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5 | Original code by
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6 | Center for Software Science
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7 | Department of Computer Science
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8 | University of Utah
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9 | Largely rewritten by Alan Modra <alan@linuxcare.com.au>
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10 |
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11 | This file is part of BFD, the Binary File Descriptor library.
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12 |
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13 | This program is free software; you can redistribute it and/or modify
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14 | it under the terms of the GNU General Public License as published by
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15 | the Free Software Foundation; either version 2 of the License, or
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16 | (at your option) any later version.
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17 |
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18 | This program is distributed in the hope that it will be useful,
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19 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 | GNU General Public License for more details.
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22 |
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23 | You should have received a copy of the GNU General Public License
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24 | along with this program; if not, write to the Free Software
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25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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26 |
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27 | #include "bfd.h"
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28 | #include "sysdep.h"
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29 | #include "libbfd.h"
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30 | #include "elf-bfd.h"
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31 | #include "elf/hppa.h"
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32 | #include "libhppa.h"
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33 | #include "elf32-hppa.h"
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34 | #define ARCH_SIZE 32
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35 | #include "elf32-hppa.h"
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36 | #include "elf-hppa.h"
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37 |
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38 | /* In order to gain some understanding of code in this file without
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39 | knowing all the intricate details of the linker, note the
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40 | following:
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41 |
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42 | Functions named elf32_hppa_* are called by external routines, other
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43 | functions are only called locally. elf32_hppa_* functions appear
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44 | in this file more or less in the order in which they are called
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45 | from external routines. eg. elf32_hppa_check_relocs is called
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46 | early in the link process, elf32_hppa_finish_dynamic_sections is
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47 | one of the last functions. */
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48 |
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49 | /* We use two hash tables to hold information for linking PA ELF objects.
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50 |
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51 | The first is the elf32_hppa_link_hash_table which is derived
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52 | from the standard ELF linker hash table. We use this as a place to
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53 | attach other hash tables and static information.
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54 |
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55 | The second is the stub hash table which is derived from the
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56 | base BFD hash table. The stub hash table holds the information
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57 | necessary to build the linker stubs during a link.
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58 |
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59 | There are a number of different stubs generated by the linker.
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60 |
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61 | Long branch stub:
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62 | : ldil LR'X,%r1
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63 | : be,n RR'X(%sr4,%r1)
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64 |
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65 | PIC long branch stub:
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66 | : b,l .+8,%r1
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67 | : addil LR'X - ($PIC_pcrel$0 - 4),%r1
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68 | : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
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69 |
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70 | Import stub to call shared library routine from normal object file
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71 | (single sub-space version)
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72 | : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
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73 | : ldw RR'lt_ptr+ltoff(%r1),%r21
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74 | : bv %r0(%r21)
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75 | : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
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76 |
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77 | Import stub to call shared library routine from shared library
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78 | (single sub-space version)
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79 | : addil LR'ltoff,%r19 ; get procedure entry point
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80 | : ldw RR'ltoff(%r1),%r21
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81 | : bv %r0(%r21)
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82 | : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
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83 |
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84 | Import stub to call shared library routine from normal object file
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85 | (multiple sub-space support)
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86 | : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
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87 | : ldw RR'lt_ptr+ltoff(%r1),%r21
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88 | : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
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89 | : ldsid (%r21),%r1
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90 | : mtsp %r1,%sr0
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91 | : be 0(%sr0,%r21) ; branch to target
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92 | : stw %rp,-24(%sp) ; save rp
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93 |
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94 | Import stub to call shared library routine from shared library
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95 | (multiple sub-space support)
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96 | : addil LR'ltoff,%r19 ; get procedure entry point
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97 | : ldw RR'ltoff(%r1),%r21
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98 | : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
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99 | : ldsid (%r21),%r1
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100 | : mtsp %r1,%sr0
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101 | : be 0(%sr0,%r21) ; branch to target
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102 | : stw %rp,-24(%sp) ; save rp
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103 |
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104 | Export stub to return from shared lib routine (multiple sub-space support)
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105 | One of these is created for each exported procedure in a shared
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106 | library (and stored in the shared lib). Shared lib routines are
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107 | called via the first instruction in the export stub so that we can
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108 | do an inter-space return. Not required for single sub-space.
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109 | : bl,n X,%rp ; trap the return
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110 | : nop
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111 | : ldw -24(%sp),%rp ; restore the original rp
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112 | : ldsid (%rp),%r1
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113 | : mtsp %r1,%sr0
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114 | : be,n 0(%sr0,%rp) ; inter-space return. */
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115 |
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116 | #define PLT_ENTRY_SIZE 8
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117 | #define GOT_ENTRY_SIZE 4
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118 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
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119 |
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120 | static const bfd_byte plt_stub[] =
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121 | {
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122 | 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
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123 | 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
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124 | 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
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125 | #define PLT_STUB_ENTRY (3*4)
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126 | 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
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127 | 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
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128 | 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
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129 | 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
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130 | };
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131 |
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132 | /* Section name for stubs is the associated section name plus this
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133 | string. */
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134 | #define STUB_SUFFIX ".stub"
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135 |
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136 | /* We don't need to copy certain PC- or GP-relative dynamic relocs
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137 | into a shared object's dynamic section. All the relocs of the
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138 | limited class we are interested in, are absolute. */
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139 | #ifndef RELATIVE_DYNRELOCS
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140 | #define RELATIVE_DYNRELOCS 0
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141 | #define IS_ABSOLUTE_RELOC(r_type) 1
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142 | #endif
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143 |
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144 | enum elf32_hppa_stub_type {
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145 | hppa_stub_long_branch,
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146 | hppa_stub_long_branch_shared,
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147 | hppa_stub_import,
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148 | hppa_stub_import_shared,
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149 | hppa_stub_export,
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150 | hppa_stub_none
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151 | };
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152 |
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153 | struct elf32_hppa_stub_hash_entry {
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154 |
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155 | /* Base hash table entry structure. */
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156 | struct bfd_hash_entry root;
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157 |
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158 | /* The stub section. */
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159 | asection *stub_sec;
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160 |
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161 | /* Offset within stub_sec of the beginning of this stub. */
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162 | bfd_vma stub_offset;
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163 |
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164 | /* Given the symbol's value and its section we can determine its final
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165 | value when building the stubs (so the stub knows where to jump. */
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166 | bfd_vma target_value;
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167 | asection *target_section;
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168 |
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169 | enum elf32_hppa_stub_type stub_type;
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170 |
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171 | /* The symbol table entry, if any, that this was derived from. */
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172 | struct elf32_hppa_link_hash_entry *h;
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173 |
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174 | /* Where this stub is being called from, or, in the case of combined
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175 | stub sections, the first input section in the group. */
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176 | asection *id_sec;
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177 | };
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178 |
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179 | struct elf32_hppa_link_hash_entry {
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180 |
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181 | struct elf_link_hash_entry elf;
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182 |
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183 | /* A pointer to the most recently used stub hash entry against this
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184 | symbol. */
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185 | struct elf32_hppa_stub_hash_entry *stub_cache;
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186 |
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187 | /* Used to count relocations for delayed sizing of relocation
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188 | sections. */
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189 | struct elf32_hppa_dyn_reloc_entry {
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190 |
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191 | /* Next relocation in the chain. */
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192 | struct elf32_hppa_dyn_reloc_entry *next;
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193 |
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194 | /* The input section of the reloc. */
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195 | asection *sec;
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196 |
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197 | /* Number of relocs copied in this section. */
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198 | bfd_size_type count;
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199 |
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200 | #if RELATIVE_DYNRELOCS
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201 | /* Number of relative relocs copied for the input section. */
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202 | bfd_size_type relative_count;
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203 | #endif
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204 | } *dyn_relocs;
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205 |
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206 | /* Set if the only reason we need a .plt entry is for a non-PIC to
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207 | PIC function call. */
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208 | unsigned int pic_call:1;
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209 |
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210 | /* Set if this symbol is used by a plabel reloc. */
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211 | unsigned int plabel:1;
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212 | };
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213 |
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214 | struct elf32_hppa_link_hash_table {
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215 |
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216 | /* The main hash table. */
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217 | struct elf_link_hash_table elf;
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218 |
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219 | /* The stub hash table. */
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220 | struct bfd_hash_table stub_hash_table;
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221 |
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222 | /* Linker stub bfd. */
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223 | bfd *stub_bfd;
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224 |
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225 | /* Linker call-backs. */
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226 | asection * (*add_stub_section) PARAMS ((const char *, asection *));
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227 | void (*layout_sections_again) PARAMS ((void));
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228 |
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229 | /* Array to keep track of which stub sections have been created, and
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230 | information on stub grouping. */
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231 | struct map_stub {
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232 | /* This is the section to which stubs in the group will be
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233 | attached. */
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234 | asection *link_sec;
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235 | /* The stub section. */
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236 | asection *stub_sec;
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237 | } *stub_group;
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238 |
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239 | /* Assorted information used by elf32_hppa_size_stubs. */
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240 | unsigned int bfd_count;
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241 | int top_index;
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242 | asection **input_list;
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243 | Elf_Internal_Sym **all_local_syms;
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244 |
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245 | /* Short-cuts to get to dynamic linker sections. */
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246 | asection *sgot;
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247 | asection *srelgot;
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248 | asection *splt;
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249 | asection *srelplt;
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250 | asection *sdynbss;
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251 | asection *srelbss;
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252 |
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253 | /* Used during a final link to store the base of the text and data
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254 | segments so that we can perform SEGREL relocations. */
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255 | bfd_vma text_segment_base;
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256 | bfd_vma data_segment_base;
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257 |
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258 | /* Whether we support multiple sub-spaces for shared libs. */
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259 | unsigned int multi_subspace:1;
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260 |
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261 | /* Flags set when various size branches are detected. Used to
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262 | select suitable defaults for the stub group size. */
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263 | unsigned int has_12bit_branch:1;
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264 | unsigned int has_17bit_branch:1;
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265 | unsigned int has_22bit_branch:1;
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266 |
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267 | /* Set if we need a .plt stub to support lazy dynamic linking. */
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268 | unsigned int need_plt_stub:1;
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269 |
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270 | /* Small local sym to section mapping cache. */
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271 | struct sym_sec_cache sym_sec;
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272 | };
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273 |
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274 | /* Various hash macros and functions. */
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275 | #define hppa_link_hash_table(p) \
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276 | ((struct elf32_hppa_link_hash_table *) ((p)->hash))
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277 |
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278 | #define hppa_stub_hash_lookup(table, string, create, copy) \
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279 | ((struct elf32_hppa_stub_hash_entry *) \
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280 | bfd_hash_lookup ((table), (string), (create), (copy)))
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281 |
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282 | static struct bfd_hash_entry *stub_hash_newfunc
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283 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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284 |
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285 | static struct bfd_hash_entry *hppa_link_hash_newfunc
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286 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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287 |
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288 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
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289 | PARAMS ((bfd *));
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290 |
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291 | static void elf32_hppa_link_hash_table_free
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292 | PARAMS ((struct bfd_link_hash_table *));
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293 |
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294 | /* Stub handling functions. */
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295 | static char *hppa_stub_name
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296 | PARAMS ((const asection *, const asection *,
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297 | const struct elf32_hppa_link_hash_entry *,
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298 | const Elf_Internal_Rela *));
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299 |
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300 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
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301 | PARAMS ((const asection *, const asection *,
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302 | struct elf32_hppa_link_hash_entry *,
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303 | const Elf_Internal_Rela *,
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304 | struct elf32_hppa_link_hash_table *));
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305 |
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306 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub
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307 | PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
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308 |
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309 | static enum elf32_hppa_stub_type hppa_type_of_stub
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310 | PARAMS ((asection *, const Elf_Internal_Rela *,
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311 | struct elf32_hppa_link_hash_entry *, bfd_vma));
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312 |
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313 | static bfd_boolean hppa_build_one_stub
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314 | PARAMS ((struct bfd_hash_entry *, PTR));
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315 |
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316 | static bfd_boolean hppa_size_one_stub
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317 | PARAMS ((struct bfd_hash_entry *, PTR));
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318 |
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319 | /* BFD and elf backend functions. */
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320 | static bfd_boolean elf32_hppa_object_p PARAMS ((bfd *));
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321 |
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322 | static bfd_boolean elf32_hppa_add_symbol_hook
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323 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
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324 | const char **, flagword *, asection **, bfd_vma *));
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325 |
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326 | static bfd_boolean elf32_hppa_create_dynamic_sections
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327 | PARAMS ((bfd *, struct bfd_link_info *));
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328 |
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329 | static void elf32_hppa_copy_indirect_symbol
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330 | PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
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331 | struct elf_link_hash_entry *));
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332 |
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333 | static bfd_boolean elf32_hppa_check_relocs
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334 | PARAMS ((bfd *, struct bfd_link_info *,
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335 | asection *, const Elf_Internal_Rela *));
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336 |
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337 | static asection *elf32_hppa_gc_mark_hook
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338 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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339 | struct elf_link_hash_entry *, Elf_Internal_Sym *));
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340 |
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341 | static bfd_boolean elf32_hppa_gc_sweep_hook
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342 | PARAMS ((bfd *, struct bfd_link_info *,
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343 | asection *, const Elf_Internal_Rela *));
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344 |
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345 | static void elf32_hppa_hide_symbol
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346 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
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347 |
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348 | static bfd_boolean elf32_hppa_adjust_dynamic_symbol
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349 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
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350 |
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351 | static bfd_boolean mark_PIC_calls
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352 | PARAMS ((struct elf_link_hash_entry *, PTR));
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353 |
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354 | static bfd_boolean allocate_plt_static
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355 | PARAMS ((struct elf_link_hash_entry *, PTR));
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356 |
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357 | static bfd_boolean allocate_dynrelocs
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358 | PARAMS ((struct elf_link_hash_entry *, PTR));
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359 |
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360 | static bfd_boolean readonly_dynrelocs
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361 | PARAMS ((struct elf_link_hash_entry *, PTR));
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362 |
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363 | static bfd_boolean clobber_millicode_symbols
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364 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
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365 |
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366 | static bfd_boolean elf32_hppa_size_dynamic_sections
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367 | PARAMS ((bfd *, struct bfd_link_info *));
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368 |
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369 | static void group_sections
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370 | PARAMS ((struct elf32_hppa_link_hash_table *, bfd_size_type, bfd_boolean));
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371 |
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372 | static int get_local_syms
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373 | PARAMS ((bfd *, bfd *, struct bfd_link_info *));
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374 |
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375 | static bfd_boolean elf32_hppa_final_link
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376 | PARAMS ((bfd *, struct bfd_link_info *));
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377 |
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378 | static void hppa_record_segment_addr
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379 | PARAMS ((bfd *, asection *, PTR));
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380 |
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381 | static bfd_reloc_status_type final_link_relocate
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382 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
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383 | bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
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384 | struct elf32_hppa_link_hash_entry *));
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385 |
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386 | static bfd_boolean elf32_hppa_relocate_section
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387 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
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388 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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389 |
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390 | static bfd_boolean elf32_hppa_finish_dynamic_symbol
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391 | PARAMS ((bfd *, struct bfd_link_info *,
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392 | struct elf_link_hash_entry *, Elf_Internal_Sym *));
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393 |
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394 | static enum elf_reloc_type_class elf32_hppa_reloc_type_class
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395 | PARAMS ((const Elf_Internal_Rela *));
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396 |
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397 | static bfd_boolean elf32_hppa_finish_dynamic_sections
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398 | PARAMS ((bfd *, struct bfd_link_info *));
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399 |
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400 | static void elf32_hppa_post_process_headers
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401 | PARAMS ((bfd *, struct bfd_link_info *));
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402 |
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403 | static int elf32_hppa_elf_get_symbol_type
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404 | PARAMS ((Elf_Internal_Sym *, int));
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405 |
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406 | /* Assorted hash table functions. */
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407 |
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408 | /* Initialize an entry in the stub hash table. */
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409 |
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410 | static struct bfd_hash_entry *
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411 | stub_hash_newfunc (entry, table, string)
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412 | struct bfd_hash_entry *entry;
|
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413 | struct bfd_hash_table *table;
|
---|
414 | const char *string;
|
---|
415 | {
|
---|
416 | /* Allocate the structure if it has not already been allocated by a
|
---|
417 | subclass. */
|
---|
418 | if (entry == NULL)
|
---|
419 | {
|
---|
420 | entry = bfd_hash_allocate (table,
|
---|
421 | sizeof (struct elf32_hppa_stub_hash_entry));
|
---|
422 | if (entry == NULL)
|
---|
423 | return entry;
|
---|
424 | }
|
---|
425 |
|
---|
426 | /* Call the allocation method of the superclass. */
|
---|
427 | entry = bfd_hash_newfunc (entry, table, string);
|
---|
428 | if (entry != NULL)
|
---|
429 | {
|
---|
430 | struct elf32_hppa_stub_hash_entry *eh;
|
---|
431 |
|
---|
432 | /* Initialize the local fields. */
|
---|
433 | eh = (struct elf32_hppa_stub_hash_entry *) entry;
|
---|
434 | eh->stub_sec = NULL;
|
---|
435 | eh->stub_offset = 0;
|
---|
436 | eh->target_value = 0;
|
---|
437 | eh->target_section = NULL;
|
---|
438 | eh->stub_type = hppa_stub_long_branch;
|
---|
439 | eh->h = NULL;
|
---|
440 | eh->id_sec = NULL;
|
---|
441 | }
|
---|
442 |
|
---|
443 | return entry;
|
---|
444 | }
|
---|
445 |
|
---|
446 | /* Initialize an entry in the link hash table. */
|
---|
447 |
|
---|
448 | static struct bfd_hash_entry *
|
---|
449 | hppa_link_hash_newfunc (entry, table, string)
|
---|
450 | struct bfd_hash_entry *entry;
|
---|
451 | struct bfd_hash_table *table;
|
---|
452 | const char *string;
|
---|
453 | {
|
---|
454 | /* Allocate the structure if it has not already been allocated by a
|
---|
455 | subclass. */
|
---|
456 | if (entry == NULL)
|
---|
457 | {
|
---|
458 | entry = bfd_hash_allocate (table,
|
---|
459 | sizeof (struct elf32_hppa_link_hash_entry));
|
---|
460 | if (entry == NULL)
|
---|
461 | return entry;
|
---|
462 | }
|
---|
463 |
|
---|
464 | /* Call the allocation method of the superclass. */
|
---|
465 | entry = _bfd_elf_link_hash_newfunc (entry, table, string);
|
---|
466 | if (entry != NULL)
|
---|
467 | {
|
---|
468 | struct elf32_hppa_link_hash_entry *eh;
|
---|
469 |
|
---|
470 | /* Initialize the local fields. */
|
---|
471 | eh = (struct elf32_hppa_link_hash_entry *) entry;
|
---|
472 | eh->stub_cache = NULL;
|
---|
473 | eh->dyn_relocs = NULL;
|
---|
474 | eh->pic_call = 0;
|
---|
475 | eh->plabel = 0;
|
---|
476 | }
|
---|
477 |
|
---|
478 | return entry;
|
---|
479 | }
|
---|
480 |
|
---|
481 | /* Create the derived linker hash table. The PA ELF port uses the derived
|
---|
482 | hash table to keep information specific to the PA ELF linker (without
|
---|
483 | using static variables). */
|
---|
484 |
|
---|
485 | static struct bfd_link_hash_table *
|
---|
486 | elf32_hppa_link_hash_table_create (abfd)
|
---|
487 | bfd *abfd;
|
---|
488 | {
|
---|
489 | struct elf32_hppa_link_hash_table *ret;
|
---|
490 | bfd_size_type amt = sizeof (*ret);
|
---|
491 |
|
---|
492 | ret = (struct elf32_hppa_link_hash_table *) bfd_malloc (amt);
|
---|
493 | if (ret == NULL)
|
---|
494 | return NULL;
|
---|
495 |
|
---|
496 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, hppa_link_hash_newfunc))
|
---|
497 | {
|
---|
498 | free (ret);
|
---|
499 | return NULL;
|
---|
500 | }
|
---|
501 |
|
---|
502 | /* Init the stub hash table too. */
|
---|
503 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
|
---|
504 | return NULL;
|
---|
505 |
|
---|
506 | ret->stub_bfd = NULL;
|
---|
507 | ret->add_stub_section = NULL;
|
---|
508 | ret->layout_sections_again = NULL;
|
---|
509 | ret->stub_group = NULL;
|
---|
510 | ret->sgot = NULL;
|
---|
511 | ret->srelgot = NULL;
|
---|
512 | ret->splt = NULL;
|
---|
513 | ret->srelplt = NULL;
|
---|
514 | ret->sdynbss = NULL;
|
---|
515 | ret->srelbss = NULL;
|
---|
516 | ret->text_segment_base = (bfd_vma) -1;
|
---|
517 | ret->data_segment_base = (bfd_vma) -1;
|
---|
518 | ret->multi_subspace = 0;
|
---|
519 | ret->has_12bit_branch = 0;
|
---|
520 | ret->has_17bit_branch = 0;
|
---|
521 | ret->has_22bit_branch = 0;
|
---|
522 | ret->need_plt_stub = 0;
|
---|
523 | ret->sym_sec.abfd = NULL;
|
---|
524 |
|
---|
525 | return &ret->elf.root;
|
---|
526 | }
|
---|
527 |
|
---|
528 | /* Free the derived linker hash table. */
|
---|
529 |
|
---|
530 | static void
|
---|
531 | elf32_hppa_link_hash_table_free (hash)
|
---|
532 | struct bfd_link_hash_table *hash;
|
---|
533 | {
|
---|
534 | struct elf32_hppa_link_hash_table *ret
|
---|
535 | = (struct elf32_hppa_link_hash_table *) hash;
|
---|
536 |
|
---|
537 | bfd_hash_table_free (&ret->stub_hash_table);
|
---|
538 | _bfd_generic_link_hash_table_free (hash);
|
---|
539 | }
|
---|
540 |
|
---|
541 | /* Build a name for an entry in the stub hash table. */
|
---|
542 |
|
---|
543 | static char *
|
---|
544 | hppa_stub_name (input_section, sym_sec, hash, rel)
|
---|
545 | const asection *input_section;
|
---|
546 | const asection *sym_sec;
|
---|
547 | const struct elf32_hppa_link_hash_entry *hash;
|
---|
548 | const Elf_Internal_Rela *rel;
|
---|
549 | {
|
---|
550 | char *stub_name;
|
---|
551 | bfd_size_type len;
|
---|
552 |
|
---|
553 | if (hash)
|
---|
554 | {
|
---|
555 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
|
---|
556 | stub_name = bfd_malloc (len);
|
---|
557 | if (stub_name != NULL)
|
---|
558 | {
|
---|
559 | sprintf (stub_name, "%08x_%s+%x",
|
---|
560 | input_section->id & 0xffffffff,
|
---|
561 | hash->elf.root.root.string,
|
---|
562 | (int) rel->r_addend & 0xffffffff);
|
---|
563 | }
|
---|
564 | }
|
---|
565 | else
|
---|
566 | {
|
---|
567 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
|
---|
568 | stub_name = bfd_malloc (len);
|
---|
569 | if (stub_name != NULL)
|
---|
570 | {
|
---|
571 | sprintf (stub_name, "%08x_%x:%x+%x",
|
---|
572 | input_section->id & 0xffffffff,
|
---|
573 | sym_sec->id & 0xffffffff,
|
---|
574 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
|
---|
575 | (int) rel->r_addend & 0xffffffff);
|
---|
576 | }
|
---|
577 | }
|
---|
578 | return stub_name;
|
---|
579 | }
|
---|
580 |
|
---|
581 | /* Look up an entry in the stub hash. Stub entries are cached because
|
---|
582 | creating the stub name takes a bit of time. */
|
---|
583 |
|
---|
584 | static struct elf32_hppa_stub_hash_entry *
|
---|
585 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, htab)
|
---|
586 | const asection *input_section;
|
---|
587 | const asection *sym_sec;
|
---|
588 | struct elf32_hppa_link_hash_entry *hash;
|
---|
589 | const Elf_Internal_Rela *rel;
|
---|
590 | struct elf32_hppa_link_hash_table *htab;
|
---|
591 | {
|
---|
592 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
593 | const asection *id_sec;
|
---|
594 |
|
---|
595 | /* If this input section is part of a group of sections sharing one
|
---|
596 | stub section, then use the id of the first section in the group.
|
---|
597 | Stub names need to include a section id, as there may well be
|
---|
598 | more than one stub used to reach say, printf, and we need to
|
---|
599 | distinguish between them. */
|
---|
600 | id_sec = htab->stub_group[input_section->id].link_sec;
|
---|
601 |
|
---|
602 | if (hash != NULL && hash->stub_cache != NULL
|
---|
603 | && hash->stub_cache->h == hash
|
---|
604 | && hash->stub_cache->id_sec == id_sec)
|
---|
605 | {
|
---|
606 | stub_entry = hash->stub_cache;
|
---|
607 | }
|
---|
608 | else
|
---|
609 | {
|
---|
610 | char *stub_name;
|
---|
611 |
|
---|
612 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
|
---|
613 | if (stub_name == NULL)
|
---|
614 | return NULL;
|
---|
615 |
|
---|
616 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
|
---|
617 | stub_name, FALSE, FALSE);
|
---|
618 | if (hash != NULL)
|
---|
619 | hash->stub_cache = stub_entry;
|
---|
620 |
|
---|
621 | free (stub_name);
|
---|
622 | }
|
---|
623 |
|
---|
624 | return stub_entry;
|
---|
625 | }
|
---|
626 |
|
---|
627 | /* Add a new stub entry to the stub hash. Not all fields of the new
|
---|
628 | stub entry are initialised. */
|
---|
629 |
|
---|
630 | static struct elf32_hppa_stub_hash_entry *
|
---|
631 | hppa_add_stub (stub_name, section, htab)
|
---|
632 | const char *stub_name;
|
---|
633 | asection *section;
|
---|
634 | struct elf32_hppa_link_hash_table *htab;
|
---|
635 | {
|
---|
636 | asection *link_sec;
|
---|
637 | asection *stub_sec;
|
---|
638 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
639 |
|
---|
640 | link_sec = htab->stub_group[section->id].link_sec;
|
---|
641 | stub_sec = htab->stub_group[section->id].stub_sec;
|
---|
642 | if (stub_sec == NULL)
|
---|
643 | {
|
---|
644 | stub_sec = htab->stub_group[link_sec->id].stub_sec;
|
---|
645 | if (stub_sec == NULL)
|
---|
646 | {
|
---|
647 | size_t namelen;
|
---|
648 | bfd_size_type len;
|
---|
649 | char *s_name;
|
---|
650 |
|
---|
651 | namelen = strlen (link_sec->name);
|
---|
652 | len = namelen + sizeof (STUB_SUFFIX);
|
---|
653 | s_name = bfd_alloc (htab->stub_bfd, len);
|
---|
654 | if (s_name == NULL)
|
---|
655 | return NULL;
|
---|
656 |
|
---|
657 | memcpy (s_name, link_sec->name, namelen);
|
---|
658 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
|
---|
659 | stub_sec = (*htab->add_stub_section) (s_name, link_sec);
|
---|
660 | if (stub_sec == NULL)
|
---|
661 | return NULL;
|
---|
662 | htab->stub_group[link_sec->id].stub_sec = stub_sec;
|
---|
663 | }
|
---|
664 | htab->stub_group[section->id].stub_sec = stub_sec;
|
---|
665 | }
|
---|
666 |
|
---|
667 | /* Enter this entry into the linker stub hash table. */
|
---|
668 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table, stub_name,
|
---|
669 | TRUE, FALSE);
|
---|
670 | if (stub_entry == NULL)
|
---|
671 | {
|
---|
672 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
|
---|
673 | bfd_archive_filename (section->owner),
|
---|
674 | stub_name);
|
---|
675 | return NULL;
|
---|
676 | }
|
---|
677 |
|
---|
678 | stub_entry->stub_sec = stub_sec;
|
---|
679 | stub_entry->stub_offset = 0;
|
---|
680 | stub_entry->id_sec = link_sec;
|
---|
681 | return stub_entry;
|
---|
682 | }
|
---|
683 |
|
---|
684 | /* Determine the type of stub needed, if any, for a call. */
|
---|
685 |
|
---|
686 | static enum elf32_hppa_stub_type
|
---|
687 | hppa_type_of_stub (input_sec, rel, hash, destination)
|
---|
688 | asection *input_sec;
|
---|
689 | const Elf_Internal_Rela *rel;
|
---|
690 | struct elf32_hppa_link_hash_entry *hash;
|
---|
691 | bfd_vma destination;
|
---|
692 | {
|
---|
693 | bfd_vma location;
|
---|
694 | bfd_vma branch_offset;
|
---|
695 | bfd_vma max_branch_offset;
|
---|
696 | unsigned int r_type;
|
---|
697 |
|
---|
698 | if (hash != NULL
|
---|
699 | && hash->elf.plt.offset != (bfd_vma) -1
|
---|
700 | && (hash->elf.dynindx != -1 || hash->pic_call)
|
---|
701 | && !hash->plabel)
|
---|
702 | {
|
---|
703 | /* We need an import stub. Decide between hppa_stub_import
|
---|
704 | and hppa_stub_import_shared later. */
|
---|
705 | return hppa_stub_import;
|
---|
706 | }
|
---|
707 |
|
---|
708 | /* Determine where the call point is. */
|
---|
709 | location = (input_sec->output_offset
|
---|
710 | + input_sec->output_section->vma
|
---|
711 | + rel->r_offset);
|
---|
712 |
|
---|
713 | branch_offset = destination - location - 8;
|
---|
714 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
715 |
|
---|
716 | /* Determine if a long branch stub is needed. parisc branch offsets
|
---|
717 | are relative to the second instruction past the branch, ie. +8
|
---|
718 | bytes on from the branch instruction location. The offset is
|
---|
719 | signed and counts in units of 4 bytes. */
|
---|
720 | if (r_type == (unsigned int) R_PARISC_PCREL17F)
|
---|
721 | {
|
---|
722 | max_branch_offset = (1 << (17-1)) << 2;
|
---|
723 | }
|
---|
724 | else if (r_type == (unsigned int) R_PARISC_PCREL12F)
|
---|
725 | {
|
---|
726 | max_branch_offset = (1 << (12-1)) << 2;
|
---|
727 | }
|
---|
728 | else /* R_PARISC_PCREL22F. */
|
---|
729 | {
|
---|
730 | max_branch_offset = (1 << (22-1)) << 2;
|
---|
731 | }
|
---|
732 |
|
---|
733 | if (branch_offset + max_branch_offset >= 2*max_branch_offset)
|
---|
734 | return hppa_stub_long_branch;
|
---|
735 |
|
---|
736 | return hppa_stub_none;
|
---|
737 | }
|
---|
738 |
|
---|
739 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
|
---|
740 | IN_ARG contains the link info pointer. */
|
---|
741 |
|
---|
742 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
|
---|
743 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
|
---|
744 |
|
---|
745 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
|
---|
746 | #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
|
---|
747 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
|
---|
748 |
|
---|
749 | #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
|
---|
750 | #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
|
---|
751 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
|
---|
752 | #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
|
---|
753 |
|
---|
754 | #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
|
---|
755 | #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
|
---|
756 |
|
---|
757 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
|
---|
758 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
|
---|
759 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
|
---|
760 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
|
---|
761 |
|
---|
762 | #define BL22_RP 0xe800a002 /* b,l,n XXX,%rp */
|
---|
763 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
|
---|
764 | #define NOP 0x08000240 /* nop */
|
---|
765 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
|
---|
766 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
|
---|
767 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
|
---|
768 |
|
---|
769 | #ifndef R19_STUBS
|
---|
770 | #define R19_STUBS 1
|
---|
771 | #endif
|
---|
772 |
|
---|
773 | #if R19_STUBS
|
---|
774 | #define LDW_R1_DLT LDW_R1_R19
|
---|
775 | #else
|
---|
776 | #define LDW_R1_DLT LDW_R1_DP
|
---|
777 | #endif
|
---|
778 |
|
---|
779 | static bfd_boolean
|
---|
780 | hppa_build_one_stub (gen_entry, in_arg)
|
---|
781 | struct bfd_hash_entry *gen_entry;
|
---|
782 | PTR in_arg;
|
---|
783 | {
|
---|
784 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
785 | struct bfd_link_info *info;
|
---|
786 | struct elf32_hppa_link_hash_table *htab;
|
---|
787 | asection *stub_sec;
|
---|
788 | bfd *stub_bfd;
|
---|
789 | bfd_byte *loc;
|
---|
790 | bfd_vma sym_value;
|
---|
791 | bfd_vma insn;
|
---|
792 | bfd_vma off;
|
---|
793 | int val;
|
---|
794 | int size;
|
---|
795 |
|
---|
796 | /* Massage our args to the form they really have. */
|
---|
797 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
|
---|
798 | info = (struct bfd_link_info *) in_arg;
|
---|
799 |
|
---|
800 | htab = hppa_link_hash_table (info);
|
---|
801 | stub_sec = stub_entry->stub_sec;
|
---|
802 |
|
---|
803 | /* Make a note of the offset within the stubs for this entry. */
|
---|
804 | stub_entry->stub_offset = stub_sec->_raw_size;
|
---|
805 | loc = stub_sec->contents + stub_entry->stub_offset;
|
---|
806 |
|
---|
807 | stub_bfd = stub_sec->owner;
|
---|
808 |
|
---|
809 | switch (stub_entry->stub_type)
|
---|
810 | {
|
---|
811 | case hppa_stub_long_branch:
|
---|
812 | /* Create the long branch. A long branch is formed with "ldil"
|
---|
813 | loading the upper bits of the target address into a register,
|
---|
814 | then branching with "be" which adds in the lower bits.
|
---|
815 | The "be" has its delay slot nullified. */
|
---|
816 | sym_value = (stub_entry->target_value
|
---|
817 | + stub_entry->target_section->output_offset
|
---|
818 | + stub_entry->target_section->output_section->vma);
|
---|
819 |
|
---|
820 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel);
|
---|
821 | insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
|
---|
822 | bfd_put_32 (stub_bfd, insn, loc);
|
---|
823 |
|
---|
824 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2;
|
---|
825 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
|
---|
826 | bfd_put_32 (stub_bfd, insn, loc + 4);
|
---|
827 |
|
---|
828 | size = 8;
|
---|
829 | break;
|
---|
830 |
|
---|
831 | case hppa_stub_long_branch_shared:
|
---|
832 | /* Branches are relative. This is where we are going to. */
|
---|
833 | sym_value = (stub_entry->target_value
|
---|
834 | + stub_entry->target_section->output_offset
|
---|
835 | + stub_entry->target_section->output_section->vma);
|
---|
836 |
|
---|
837 | /* And this is where we are coming from, more or less. */
|
---|
838 | sym_value -= (stub_entry->stub_offset
|
---|
839 | + stub_sec->output_offset
|
---|
840 | + stub_sec->output_section->vma);
|
---|
841 |
|
---|
842 | bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
|
---|
843 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
|
---|
844 | insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
|
---|
845 | bfd_put_32 (stub_bfd, insn, loc + 4);
|
---|
846 |
|
---|
847 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
|
---|
848 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
|
---|
849 | bfd_put_32 (stub_bfd, insn, loc + 8);
|
---|
850 | size = 12;
|
---|
851 | break;
|
---|
852 |
|
---|
853 | case hppa_stub_import:
|
---|
854 | case hppa_stub_import_shared:
|
---|
855 | off = stub_entry->h->elf.plt.offset;
|
---|
856 | if (off >= (bfd_vma) -2)
|
---|
857 | abort ();
|
---|
858 |
|
---|
859 | off &= ~ (bfd_vma) 1;
|
---|
860 | sym_value = (off
|
---|
861 | + htab->splt->output_offset
|
---|
862 | + htab->splt->output_section->vma
|
---|
863 | - elf_gp (htab->splt->output_section->owner));
|
---|
864 |
|
---|
865 | insn = ADDIL_DP;
|
---|
866 | #if R19_STUBS
|
---|
867 | if (stub_entry->stub_type == hppa_stub_import_shared)
|
---|
868 | insn = ADDIL_R19;
|
---|
869 | #endif
|
---|
870 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel),
|
---|
871 | insn = hppa_rebuild_insn ((int) insn, val, 21);
|
---|
872 | bfd_put_32 (stub_bfd, insn, loc);
|
---|
873 |
|
---|
874 | /* It is critical to use lrsel/rrsel here because we are using
|
---|
875 | two different offsets (+0 and +4) from sym_value. If we use
|
---|
876 | lsel/rsel then with unfortunate sym_values we will round
|
---|
877 | sym_value+4 up to the next 2k block leading to a mis-match
|
---|
878 | between the lsel and rsel value. */
|
---|
879 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel);
|
---|
880 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
|
---|
881 | bfd_put_32 (stub_bfd, insn, loc + 4);
|
---|
882 |
|
---|
883 | if (htab->multi_subspace)
|
---|
884 | {
|
---|
885 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
|
---|
886 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
|
---|
887 | bfd_put_32 (stub_bfd, insn, loc + 8);
|
---|
888 |
|
---|
889 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
|
---|
890 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
|
---|
891 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
|
---|
892 | bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
|
---|
893 |
|
---|
894 | size = 28;
|
---|
895 | }
|
---|
896 | else
|
---|
897 | {
|
---|
898 | bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
|
---|
899 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
|
---|
900 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
|
---|
901 | bfd_put_32 (stub_bfd, insn, loc + 12);
|
---|
902 |
|
---|
903 | size = 16;
|
---|
904 | }
|
---|
905 |
|
---|
906 | if (!info->shared
|
---|
907 | && stub_entry->h != NULL
|
---|
908 | && stub_entry->h->pic_call)
|
---|
909 | {
|
---|
910 | /* Build the .plt entry needed to call a PIC function from
|
---|
911 | statically linked code. We don't need any relocs. */
|
---|
912 | bfd *dynobj;
|
---|
913 | struct elf32_hppa_link_hash_entry *eh;
|
---|
914 | bfd_vma value;
|
---|
915 |
|
---|
916 | dynobj = htab->elf.dynobj;
|
---|
917 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
|
---|
918 |
|
---|
919 | if (eh->elf.root.type != bfd_link_hash_defined
|
---|
920 | && eh->elf.root.type != bfd_link_hash_defweak)
|
---|
921 | abort ();
|
---|
922 |
|
---|
923 | value = (eh->elf.root.u.def.value
|
---|
924 | + eh->elf.root.u.def.section->output_offset
|
---|
925 | + eh->elf.root.u.def.section->output_section->vma);
|
---|
926 |
|
---|
927 | /* Fill in the entry in the procedure linkage table.
|
---|
928 |
|
---|
929 | The format of a plt entry is
|
---|
930 | <funcaddr>
|
---|
931 | <__gp>. */
|
---|
932 |
|
---|
933 | bfd_put_32 (htab->splt->owner, value,
|
---|
934 | htab->splt->contents + off);
|
---|
935 | value = elf_gp (htab->splt->output_section->owner);
|
---|
936 | bfd_put_32 (htab->splt->owner, value,
|
---|
937 | htab->splt->contents + off + 4);
|
---|
938 | }
|
---|
939 | break;
|
---|
940 |
|
---|
941 | case hppa_stub_export:
|
---|
942 | /* Branches are relative. This is where we are going to. */
|
---|
943 | sym_value = (stub_entry->target_value
|
---|
944 | + stub_entry->target_section->output_offset
|
---|
945 | + stub_entry->target_section->output_section->vma);
|
---|
946 |
|
---|
947 | /* And this is where we are coming from. */
|
---|
948 | sym_value -= (stub_entry->stub_offset
|
---|
949 | + stub_sec->output_offset
|
---|
950 | + stub_sec->output_section->vma);
|
---|
951 |
|
---|
952 | if (sym_value - 8 + (1 << (17 + 1)) >= (1 << (17 + 2))
|
---|
953 | && (!htab->has_22bit_branch
|
---|
954 | || sym_value - 8 + (1 << (22 + 1)) >= (1 << (22 + 2))))
|
---|
955 | {
|
---|
956 | (*_bfd_error_handler)
|
---|
957 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
|
---|
958 | bfd_archive_filename (stub_entry->target_section->owner),
|
---|
959 | stub_sec->name,
|
---|
960 | (long) stub_entry->stub_offset,
|
---|
961 | stub_entry->root.string);
|
---|
962 | bfd_set_error (bfd_error_bad_value);
|
---|
963 | return FALSE;
|
---|
964 | }
|
---|
965 |
|
---|
966 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
|
---|
967 | if (!htab->has_22bit_branch)
|
---|
968 | insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
|
---|
969 | else
|
---|
970 | insn = hppa_rebuild_insn ((int) BL22_RP, val, 22);
|
---|
971 | bfd_put_32 (stub_bfd, insn, loc);
|
---|
972 |
|
---|
973 | bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
|
---|
974 | bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
|
---|
975 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
|
---|
976 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
|
---|
977 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
|
---|
978 |
|
---|
979 | /* Point the function symbol at the stub. */
|
---|
980 | stub_entry->h->elf.root.u.def.section = stub_sec;
|
---|
981 | stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size;
|
---|
982 |
|
---|
983 | size = 24;
|
---|
984 | break;
|
---|
985 |
|
---|
986 | default:
|
---|
987 | BFD_FAIL ();
|
---|
988 | return FALSE;
|
---|
989 | }
|
---|
990 |
|
---|
991 | stub_sec->_raw_size += size;
|
---|
992 | return TRUE;
|
---|
993 | }
|
---|
994 |
|
---|
995 | #undef LDIL_R1
|
---|
996 | #undef BE_SR4_R1
|
---|
997 | #undef BL_R1
|
---|
998 | #undef ADDIL_R1
|
---|
999 | #undef DEPI_R1
|
---|
1000 | #undef ADDIL_DP
|
---|
1001 | #undef LDW_R1_R21
|
---|
1002 | #undef LDW_R1_DLT
|
---|
1003 | #undef LDW_R1_R19
|
---|
1004 | #undef ADDIL_R19
|
---|
1005 | #undef LDW_R1_DP
|
---|
1006 | #undef LDSID_R21_R1
|
---|
1007 | #undef MTSP_R1
|
---|
1008 | #undef BE_SR0_R21
|
---|
1009 | #undef STW_RP
|
---|
1010 | #undef BV_R0_R21
|
---|
1011 | #undef BL_RP
|
---|
1012 | #undef NOP
|
---|
1013 | #undef LDW_RP
|
---|
1014 | #undef LDSID_RP_R1
|
---|
1015 | #undef BE_SR0_RP
|
---|
1016 |
|
---|
1017 | /* As above, but don't actually build the stub. Just bump offset so
|
---|
1018 | we know stub section sizes. */
|
---|
1019 |
|
---|
1020 | static bfd_boolean
|
---|
1021 | hppa_size_one_stub (gen_entry, in_arg)
|
---|
1022 | struct bfd_hash_entry *gen_entry;
|
---|
1023 | PTR in_arg;
|
---|
1024 | {
|
---|
1025 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
1026 | struct elf32_hppa_link_hash_table *htab;
|
---|
1027 | int size;
|
---|
1028 |
|
---|
1029 | /* Massage our args to the form they really have. */
|
---|
1030 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
|
---|
1031 | htab = (struct elf32_hppa_link_hash_table *) in_arg;
|
---|
1032 |
|
---|
1033 | if (stub_entry->stub_type == hppa_stub_long_branch)
|
---|
1034 | size = 8;
|
---|
1035 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared)
|
---|
1036 | size = 12;
|
---|
1037 | else if (stub_entry->stub_type == hppa_stub_export)
|
---|
1038 | size = 24;
|
---|
1039 | else /* hppa_stub_import or hppa_stub_import_shared. */
|
---|
1040 | {
|
---|
1041 | if (htab->multi_subspace)
|
---|
1042 | size = 28;
|
---|
1043 | else
|
---|
1044 | size = 16;
|
---|
1045 | }
|
---|
1046 |
|
---|
1047 | stub_entry->stub_sec->_raw_size += size;
|
---|
1048 | return TRUE;
|
---|
1049 | }
|
---|
1050 |
|
---|
1051 | /* Return nonzero if ABFD represents an HPPA ELF32 file.
|
---|
1052 | Additionally we set the default architecture and machine. */
|
---|
1053 |
|
---|
1054 | static bfd_boolean
|
---|
1055 | elf32_hppa_object_p (abfd)
|
---|
1056 | bfd *abfd;
|
---|
1057 | {
|
---|
1058 | Elf_Internal_Ehdr * i_ehdrp;
|
---|
1059 | unsigned int flags;
|
---|
1060 |
|
---|
1061 | i_ehdrp = elf_elfheader (abfd);
|
---|
1062 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
|
---|
1063 | {
|
---|
1064 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
|
---|
1065 | return FALSE;
|
---|
1066 | }
|
---|
1067 | else
|
---|
1068 | {
|
---|
1069 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
|
---|
1070 | return FALSE;
|
---|
1071 | }
|
---|
1072 |
|
---|
1073 | flags = i_ehdrp->e_flags;
|
---|
1074 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
|
---|
1075 | {
|
---|
1076 | case EFA_PARISC_1_0:
|
---|
1077 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
|
---|
1078 | case EFA_PARISC_1_1:
|
---|
1079 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
|
---|
1080 | case EFA_PARISC_2_0:
|
---|
1081 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
|
---|
1082 | case EFA_PARISC_2_0 | EF_PARISC_WIDE:
|
---|
1083 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
|
---|
1084 | }
|
---|
1085 | return TRUE;
|
---|
1086 | }
|
---|
1087 |
|
---|
1088 | /* Undo the generic ELF code's subtraction of section->vma from the
|
---|
1089 | value of each external symbol. */
|
---|
1090 |
|
---|
1091 | static bfd_boolean
|
---|
1092 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
---|
1093 | bfd *abfd ATTRIBUTE_UNUSED;
|
---|
1094 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1095 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
|
---|
1096 | const char **namep ATTRIBUTE_UNUSED;
|
---|
1097 | flagword *flagsp ATTRIBUTE_UNUSED;
|
---|
1098 | asection **secp;
|
---|
1099 | bfd_vma *valp;
|
---|
1100 | {
|
---|
1101 | *valp += (*secp)->vma;
|
---|
1102 | return TRUE;
|
---|
1103 | }
|
---|
1104 |
|
---|
1105 | /* Create the .plt and .got sections, and set up our hash table
|
---|
1106 | short-cuts to various dynamic sections. */
|
---|
1107 |
|
---|
1108 | static bfd_boolean
|
---|
1109 | elf32_hppa_create_dynamic_sections (abfd, info)
|
---|
1110 | bfd *abfd;
|
---|
1111 | struct bfd_link_info *info;
|
---|
1112 | {
|
---|
1113 | struct elf32_hppa_link_hash_table *htab;
|
---|
1114 |
|
---|
1115 | /* Don't try to create the .plt and .got twice. */
|
---|
1116 | htab = hppa_link_hash_table (info);
|
---|
1117 | if (htab->splt != NULL)
|
---|
1118 | return TRUE;
|
---|
1119 |
|
---|
1120 | /* Call the generic code to do most of the work. */
|
---|
1121 | if (! _bfd_elf_create_dynamic_sections (abfd, info))
|
---|
1122 | return FALSE;
|
---|
1123 |
|
---|
1124 | htab->splt = bfd_get_section_by_name (abfd, ".plt");
|
---|
1125 | htab->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
|
---|
1126 |
|
---|
1127 | htab->sgot = bfd_get_section_by_name (abfd, ".got");
|
---|
1128 | htab->srelgot = bfd_make_section (abfd, ".rela.got");
|
---|
1129 | if (htab->srelgot == NULL
|
---|
1130 | || ! bfd_set_section_flags (abfd, htab->srelgot,
|
---|
1131 | (SEC_ALLOC
|
---|
1132 | | SEC_LOAD
|
---|
1133 | | SEC_HAS_CONTENTS
|
---|
1134 | | SEC_IN_MEMORY
|
---|
1135 | | SEC_LINKER_CREATED
|
---|
1136 | | SEC_READONLY))
|
---|
1137 | || ! bfd_set_section_alignment (abfd, htab->srelgot, 2))
|
---|
1138 | return FALSE;
|
---|
1139 |
|
---|
1140 | htab->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
|
---|
1141 | htab->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
|
---|
1142 |
|
---|
1143 | return TRUE;
|
---|
1144 | }
|
---|
1145 |
|
---|
1146 | /* Copy the extra info we tack onto an elf_link_hash_entry. */
|
---|
1147 |
|
---|
1148 | static void
|
---|
1149 | elf32_hppa_copy_indirect_symbol (bed, dir, ind)
|
---|
1150 | struct elf_backend_data *bed;
|
---|
1151 | struct elf_link_hash_entry *dir, *ind;
|
---|
1152 | {
|
---|
1153 | struct elf32_hppa_link_hash_entry *edir, *eind;
|
---|
1154 |
|
---|
1155 | edir = (struct elf32_hppa_link_hash_entry *) dir;
|
---|
1156 | eind = (struct elf32_hppa_link_hash_entry *) ind;
|
---|
1157 |
|
---|
1158 | if (eind->dyn_relocs != NULL)
|
---|
1159 | {
|
---|
1160 | if (edir->dyn_relocs != NULL)
|
---|
1161 | {
|
---|
1162 | struct elf32_hppa_dyn_reloc_entry **pp;
|
---|
1163 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
1164 |
|
---|
1165 | if (ind->root.type == bfd_link_hash_indirect)
|
---|
1166 | abort ();
|
---|
1167 |
|
---|
1168 | /* Add reloc counts against the weak sym to the strong sym
|
---|
1169 | list. Merge any entries against the same section. */
|
---|
1170 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
---|
1171 | {
|
---|
1172 | struct elf32_hppa_dyn_reloc_entry *q;
|
---|
1173 |
|
---|
1174 | for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
---|
1175 | if (q->sec == p->sec)
|
---|
1176 | {
|
---|
1177 | #if RELATIVE_DYNRELOCS
|
---|
1178 | q->relative_count += p->relative_count;
|
---|
1179 | #endif
|
---|
1180 | q->count += p->count;
|
---|
1181 | *pp = p->next;
|
---|
1182 | break;
|
---|
1183 | }
|
---|
1184 | if (q == NULL)
|
---|
1185 | pp = &p->next;
|
---|
1186 | }
|
---|
1187 | *pp = edir->dyn_relocs;
|
---|
1188 | }
|
---|
1189 |
|
---|
1190 | edir->dyn_relocs = eind->dyn_relocs;
|
---|
1191 | eind->dyn_relocs = NULL;
|
---|
1192 | }
|
---|
1193 |
|
---|
1194 | _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
|
---|
1195 | }
|
---|
1196 |
|
---|
1197 | /* Look through the relocs for a section during the first phase, and
|
---|
1198 | calculate needed space in the global offset table, procedure linkage
|
---|
1199 | table, and dynamic reloc sections. At this point we haven't
|
---|
1200 | necessarily read all the input files. */
|
---|
1201 |
|
---|
1202 | static bfd_boolean
|
---|
1203 | elf32_hppa_check_relocs (abfd, info, sec, relocs)
|
---|
1204 | bfd *abfd;
|
---|
1205 | struct bfd_link_info *info;
|
---|
1206 | asection *sec;
|
---|
1207 | const Elf_Internal_Rela *relocs;
|
---|
1208 | {
|
---|
1209 | Elf_Internal_Shdr *symtab_hdr;
|
---|
1210 | struct elf_link_hash_entry **sym_hashes;
|
---|
1211 | const Elf_Internal_Rela *rel;
|
---|
1212 | const Elf_Internal_Rela *rel_end;
|
---|
1213 | struct elf32_hppa_link_hash_table *htab;
|
---|
1214 | asection *sreloc;
|
---|
1215 | asection *stubreloc;
|
---|
1216 |
|
---|
1217 | if (info->relocateable)
|
---|
1218 | return TRUE;
|
---|
1219 |
|
---|
1220 | htab = hppa_link_hash_table (info);
|
---|
1221 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
---|
1222 | sym_hashes = elf_sym_hashes (abfd);
|
---|
1223 | sreloc = NULL;
|
---|
1224 | stubreloc = NULL;
|
---|
1225 |
|
---|
1226 | rel_end = relocs + sec->reloc_count;
|
---|
1227 | for (rel = relocs; rel < rel_end; rel++)
|
---|
1228 | {
|
---|
1229 | enum {
|
---|
1230 | NEED_GOT = 1,
|
---|
1231 | NEED_PLT = 2,
|
---|
1232 | NEED_DYNREL = 4,
|
---|
1233 | PLT_PLABEL = 8
|
---|
1234 | };
|
---|
1235 |
|
---|
1236 | unsigned int r_symndx, r_type;
|
---|
1237 | struct elf32_hppa_link_hash_entry *h;
|
---|
1238 | int need_entry;
|
---|
1239 |
|
---|
1240 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
1241 |
|
---|
1242 | if (r_symndx < symtab_hdr->sh_info)
|
---|
1243 | h = NULL;
|
---|
1244 | else
|
---|
1245 | h = ((struct elf32_hppa_link_hash_entry *)
|
---|
1246 | sym_hashes[r_symndx - symtab_hdr->sh_info]);
|
---|
1247 |
|
---|
1248 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
1249 |
|
---|
1250 | switch (r_type)
|
---|
1251 | {
|
---|
1252 | case R_PARISC_DLTIND14F:
|
---|
1253 | case R_PARISC_DLTIND14R:
|
---|
1254 | case R_PARISC_DLTIND21L:
|
---|
1255 | /* This symbol requires a global offset table entry. */
|
---|
1256 | need_entry = NEED_GOT;
|
---|
1257 |
|
---|
1258 | /* Mark this section as containing PIC code. */
|
---|
1259 | sec->flags |= SEC_HAS_GOT_REF;
|
---|
1260 | break;
|
---|
1261 |
|
---|
1262 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
|
---|
1263 | case R_PARISC_PLABEL21L:
|
---|
1264 | case R_PARISC_PLABEL32:
|
---|
1265 | /* If the addend is non-zero, we break badly. */
|
---|
1266 | if (rel->r_addend != 0)
|
---|
1267 | abort ();
|
---|
1268 |
|
---|
1269 | /* If we are creating a shared library, then we need to
|
---|
1270 | create a PLT entry for all PLABELs, because PLABELs with
|
---|
1271 | local symbols may be passed via a pointer to another
|
---|
1272 | object. Additionally, output a dynamic relocation
|
---|
1273 | pointing to the PLT entry.
|
---|
1274 | For executables, the original 32-bit ABI allowed two
|
---|
1275 | different styles of PLABELs (function pointers): For
|
---|
1276 | global functions, the PLABEL word points into the .plt
|
---|
1277 | two bytes past a (function address, gp) pair, and for
|
---|
1278 | local functions the PLABEL points directly at the
|
---|
1279 | function. The magic +2 for the first type allows us to
|
---|
1280 | differentiate between the two. As you can imagine, this
|
---|
1281 | is a real pain when it comes to generating code to call
|
---|
1282 | functions indirectly or to compare function pointers.
|
---|
1283 | We avoid the mess by always pointing a PLABEL into the
|
---|
1284 | .plt, even for local functions. */
|
---|
1285 | need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
|
---|
1286 | break;
|
---|
1287 |
|
---|
1288 | case R_PARISC_PCREL12F:
|
---|
1289 | htab->has_12bit_branch = 1;
|
---|
1290 | goto branch_common;
|
---|
1291 |
|
---|
1292 | case R_PARISC_PCREL17C:
|
---|
1293 | case R_PARISC_PCREL17F:
|
---|
1294 | htab->has_17bit_branch = 1;
|
---|
1295 | goto branch_common;
|
---|
1296 |
|
---|
1297 | case R_PARISC_PCREL22F:
|
---|
1298 | htab->has_22bit_branch = 1;
|
---|
1299 | branch_common:
|
---|
1300 | /* Function calls might need to go through the .plt, and
|
---|
1301 | might require long branch stubs. */
|
---|
1302 | if (h == NULL)
|
---|
1303 | {
|
---|
1304 | /* We know local syms won't need a .plt entry, and if
|
---|
1305 | they need a long branch stub we can't guarantee that
|
---|
1306 | we can reach the stub. So just flag an error later
|
---|
1307 | if we're doing a shared link and find we need a long
|
---|
1308 | branch stub. */
|
---|
1309 | continue;
|
---|
1310 | }
|
---|
1311 | else
|
---|
1312 | {
|
---|
1313 | /* Global symbols will need a .plt entry if they remain
|
---|
1314 | global, and in most cases won't need a long branch
|
---|
1315 | stub. Unfortunately, we have to cater for the case
|
---|
1316 | where a symbol is forced local by versioning, or due
|
---|
1317 | to symbolic linking, and we lose the .plt entry. */
|
---|
1318 | need_entry = NEED_PLT;
|
---|
1319 | if (h->elf.type == STT_PARISC_MILLI)
|
---|
1320 | need_entry = 0;
|
---|
1321 | }
|
---|
1322 | break;
|
---|
1323 |
|
---|
1324 | case R_PARISC_SEGBASE: /* Used to set segment base. */
|
---|
1325 | case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
|
---|
1326 | case R_PARISC_PCREL14F: /* PC relative load/store. */
|
---|
1327 | case R_PARISC_PCREL14R:
|
---|
1328 | case R_PARISC_PCREL17R: /* External branches. */
|
---|
1329 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */
|
---|
1330 | /* We don't need to propagate the relocation if linking a
|
---|
1331 | shared object since these are section relative. */
|
---|
1332 | continue;
|
---|
1333 |
|
---|
1334 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
|
---|
1335 | case R_PARISC_DPREL14R:
|
---|
1336 | case R_PARISC_DPREL21L:
|
---|
1337 | if (info->shared)
|
---|
1338 | {
|
---|
1339 | (*_bfd_error_handler)
|
---|
1340 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
|
---|
1341 | bfd_archive_filename (abfd),
|
---|
1342 | elf_hppa_howto_table[r_type].name);
|
---|
1343 | bfd_set_error (bfd_error_bad_value);
|
---|
1344 | return FALSE;
|
---|
1345 | }
|
---|
1346 | /* Fall through. */
|
---|
1347 |
|
---|
1348 | case R_PARISC_DIR17F: /* Used for external branches. */
|
---|
1349 | case R_PARISC_DIR17R:
|
---|
1350 | case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
|
---|
1351 | case R_PARISC_DIR14R:
|
---|
1352 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */
|
---|
1353 | #if 0
|
---|
1354 | /* Help debug shared library creation. Any of the above
|
---|
1355 | relocs can be used in shared libs, but they may cause
|
---|
1356 | pages to become unshared. */
|
---|
1357 | if (info->shared)
|
---|
1358 | {
|
---|
1359 | (*_bfd_error_handler)
|
---|
1360 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
|
---|
1361 | bfd_archive_filename (abfd),
|
---|
1362 | elf_hppa_howto_table[r_type].name);
|
---|
1363 | }
|
---|
1364 | /* Fall through. */
|
---|
1365 | #endif
|
---|
1366 |
|
---|
1367 | case R_PARISC_DIR32: /* .word relocs. */
|
---|
1368 | /* We may want to output a dynamic relocation later. */
|
---|
1369 | need_entry = NEED_DYNREL;
|
---|
1370 | break;
|
---|
1371 |
|
---|
1372 | /* This relocation describes the C++ object vtable hierarchy.
|
---|
1373 | Reconstruct it for later use during GC. */
|
---|
1374 | case R_PARISC_GNU_VTINHERIT:
|
---|
1375 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec,
|
---|
1376 | &h->elf, rel->r_offset))
|
---|
1377 | return FALSE;
|
---|
1378 | continue;
|
---|
1379 |
|
---|
1380 | /* This relocation describes which C++ vtable entries are actually
|
---|
1381 | used. Record for later use during GC. */
|
---|
1382 | case R_PARISC_GNU_VTENTRY:
|
---|
1383 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec,
|
---|
1384 | &h->elf, rel->r_addend))
|
---|
1385 | return FALSE;
|
---|
1386 | continue;
|
---|
1387 |
|
---|
1388 | default:
|
---|
1389 | continue;
|
---|
1390 | }
|
---|
1391 |
|
---|
1392 | /* Now carry out our orders. */
|
---|
1393 | if (need_entry & NEED_GOT)
|
---|
1394 | {
|
---|
1395 | /* Allocate space for a GOT entry, as well as a dynamic
|
---|
1396 | relocation for this entry. */
|
---|
1397 | if (htab->sgot == NULL)
|
---|
1398 | {
|
---|
1399 | if (htab->elf.dynobj == NULL)
|
---|
1400 | htab->elf.dynobj = abfd;
|
---|
1401 | if (!elf32_hppa_create_dynamic_sections (htab->elf.dynobj, info))
|
---|
1402 | return FALSE;
|
---|
1403 | }
|
---|
1404 |
|
---|
1405 | if (h != NULL)
|
---|
1406 | {
|
---|
1407 | h->elf.got.refcount += 1;
|
---|
1408 | }
|
---|
1409 | else
|
---|
1410 | {
|
---|
1411 | bfd_signed_vma *local_got_refcounts;
|
---|
1412 |
|
---|
1413 | /* This is a global offset table entry for a local symbol. */
|
---|
1414 | local_got_refcounts = elf_local_got_refcounts (abfd);
|
---|
1415 | if (local_got_refcounts == NULL)
|
---|
1416 | {
|
---|
1417 | bfd_size_type size;
|
---|
1418 |
|
---|
1419 | /* Allocate space for local got offsets and local
|
---|
1420 | plt offsets. Done this way to save polluting
|
---|
1421 | elf_obj_tdata with another target specific
|
---|
1422 | pointer. */
|
---|
1423 | size = symtab_hdr->sh_info;
|
---|
1424 | size *= 2 * sizeof (bfd_signed_vma);
|
---|
1425 | local_got_refcounts = ((bfd_signed_vma *)
|
---|
1426 | bfd_zalloc (abfd, size));
|
---|
1427 | if (local_got_refcounts == NULL)
|
---|
1428 | return FALSE;
|
---|
1429 | elf_local_got_refcounts (abfd) = local_got_refcounts;
|
---|
1430 | }
|
---|
1431 | local_got_refcounts[r_symndx] += 1;
|
---|
1432 | }
|
---|
1433 | }
|
---|
1434 |
|
---|
1435 | if (need_entry & NEED_PLT)
|
---|
1436 | {
|
---|
1437 | /* If we are creating a shared library, and this is a reloc
|
---|
1438 | against a weak symbol or a global symbol in a dynamic
|
---|
1439 | object, then we will be creating an import stub and a
|
---|
1440 | .plt entry for the symbol. Similarly, on a normal link
|
---|
1441 | to symbols defined in a dynamic object we'll need the
|
---|
1442 | import stub and a .plt entry. We don't know yet whether
|
---|
1443 | the symbol is defined or not, so make an entry anyway and
|
---|
1444 | clean up later in adjust_dynamic_symbol. */
|
---|
1445 | if ((sec->flags & SEC_ALLOC) != 0)
|
---|
1446 | {
|
---|
1447 | if (h != NULL)
|
---|
1448 | {
|
---|
1449 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
---|
1450 | h->elf.plt.refcount += 1;
|
---|
1451 |
|
---|
1452 | /* If this .plt entry is for a plabel, mark it so
|
---|
1453 | that adjust_dynamic_symbol will keep the entry
|
---|
1454 | even if it appears to be local. */
|
---|
1455 | if (need_entry & PLT_PLABEL)
|
---|
1456 | h->plabel = 1;
|
---|
1457 | }
|
---|
1458 | else if (need_entry & PLT_PLABEL)
|
---|
1459 | {
|
---|
1460 | bfd_signed_vma *local_got_refcounts;
|
---|
1461 | bfd_signed_vma *local_plt_refcounts;
|
---|
1462 |
|
---|
1463 | local_got_refcounts = elf_local_got_refcounts (abfd);
|
---|
1464 | if (local_got_refcounts == NULL)
|
---|
1465 | {
|
---|
1466 | bfd_size_type size;
|
---|
1467 |
|
---|
1468 | /* Allocate space for local got offsets and local
|
---|
1469 | plt offsets. */
|
---|
1470 | size = symtab_hdr->sh_info;
|
---|
1471 | size *= 2 * sizeof (bfd_signed_vma);
|
---|
1472 | local_got_refcounts = ((bfd_signed_vma *)
|
---|
1473 | bfd_zalloc (abfd, size));
|
---|
1474 | if (local_got_refcounts == NULL)
|
---|
1475 | return FALSE;
|
---|
1476 | elf_local_got_refcounts (abfd) = local_got_refcounts;
|
---|
1477 | }
|
---|
1478 | local_plt_refcounts = (local_got_refcounts
|
---|
1479 | + symtab_hdr->sh_info);
|
---|
1480 | local_plt_refcounts[r_symndx] += 1;
|
---|
1481 | }
|
---|
1482 | }
|
---|
1483 | }
|
---|
1484 |
|
---|
1485 | if (need_entry & NEED_DYNREL)
|
---|
1486 | {
|
---|
1487 | /* Flag this symbol as having a non-got, non-plt reference
|
---|
1488 | so that we generate copy relocs if it turns out to be
|
---|
1489 | dynamic. */
|
---|
1490 | if (h != NULL && !info->shared)
|
---|
1491 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
|
---|
1492 |
|
---|
1493 | /* If we are creating a shared library then we need to copy
|
---|
1494 | the reloc into the shared library. However, if we are
|
---|
1495 | linking with -Bsymbolic, we need only copy absolute
|
---|
1496 | relocs or relocs against symbols that are not defined in
|
---|
1497 | an object we are including in the link. PC- or DP- or
|
---|
1498 | DLT-relative relocs against any local sym or global sym
|
---|
1499 | with DEF_REGULAR set, can be discarded. At this point we
|
---|
1500 | have not seen all the input files, so it is possible that
|
---|
1501 | DEF_REGULAR is not set now but will be set later (it is
|
---|
1502 | never cleared). We account for that possibility below by
|
---|
1503 | storing information in the dyn_relocs field of the
|
---|
1504 | hash table entry.
|
---|
1505 |
|
---|
1506 | A similar situation to the -Bsymbolic case occurs when
|
---|
1507 | creating shared libraries and symbol visibility changes
|
---|
1508 | render the symbol local.
|
---|
1509 |
|
---|
1510 | As it turns out, all the relocs we will be creating here
|
---|
1511 | are absolute, so we cannot remove them on -Bsymbolic
|
---|
1512 | links or visibility changes anyway. A STUB_REL reloc
|
---|
1513 | is absolute too, as in that case it is the reloc in the
|
---|
1514 | stub we will be creating, rather than copying the PCREL
|
---|
1515 | reloc in the branch.
|
---|
1516 |
|
---|
1517 | If on the other hand, we are creating an executable, we
|
---|
1518 | may need to keep relocations for symbols satisfied by a
|
---|
1519 | dynamic library if we manage to avoid copy relocs for the
|
---|
1520 | symbol. */
|
---|
1521 | if ((info->shared
|
---|
1522 | && (sec->flags & SEC_ALLOC) != 0
|
---|
1523 | && (IS_ABSOLUTE_RELOC (r_type)
|
---|
1524 | || (h != NULL
|
---|
1525 | && (!info->symbolic
|
---|
1526 | || h->elf.root.type == bfd_link_hash_defweak
|
---|
1527 | || (h->elf.elf_link_hash_flags
|
---|
1528 | & ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
---|
1529 | || (!info->shared
|
---|
1530 | && (sec->flags & SEC_ALLOC) != 0
|
---|
1531 | && h != NULL
|
---|
1532 | && (h->elf.root.type == bfd_link_hash_defweak
|
---|
1533 | || (h->elf.elf_link_hash_flags
|
---|
1534 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
---|
1535 | {
|
---|
1536 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
1537 | struct elf32_hppa_dyn_reloc_entry **head;
|
---|
1538 |
|
---|
1539 | /* Create a reloc section in dynobj and make room for
|
---|
1540 | this reloc. */
|
---|
1541 | if (sreloc == NULL)
|
---|
1542 | {
|
---|
1543 | char *name;
|
---|
1544 | bfd *dynobj;
|
---|
1545 |
|
---|
1546 | name = (bfd_elf_string_from_elf_section
|
---|
1547 | (abfd,
|
---|
1548 | elf_elfheader (abfd)->e_shstrndx,
|
---|
1549 | elf_section_data (sec)->rel_hdr.sh_name));
|
---|
1550 | if (name == NULL)
|
---|
1551 | {
|
---|
1552 | (*_bfd_error_handler)
|
---|
1553 | (_("Could not find relocation section for %s"),
|
---|
1554 | sec->name);
|
---|
1555 | bfd_set_error (bfd_error_bad_value);
|
---|
1556 | return FALSE;
|
---|
1557 | }
|
---|
1558 |
|
---|
1559 | if (htab->elf.dynobj == NULL)
|
---|
1560 | htab->elf.dynobj = abfd;
|
---|
1561 |
|
---|
1562 | dynobj = htab->elf.dynobj;
|
---|
1563 | sreloc = bfd_get_section_by_name (dynobj, name);
|
---|
1564 | if (sreloc == NULL)
|
---|
1565 | {
|
---|
1566 | flagword flags;
|
---|
1567 |
|
---|
1568 | sreloc = bfd_make_section (dynobj, name);
|
---|
1569 | flags = (SEC_HAS_CONTENTS | SEC_READONLY
|
---|
1570 | | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
---|
1571 | if ((sec->flags & SEC_ALLOC) != 0)
|
---|
1572 | flags |= SEC_ALLOC | SEC_LOAD;
|
---|
1573 | if (sreloc == NULL
|
---|
1574 | || !bfd_set_section_flags (dynobj, sreloc, flags)
|
---|
1575 | || !bfd_set_section_alignment (dynobj, sreloc, 2))
|
---|
1576 | return FALSE;
|
---|
1577 | }
|
---|
1578 |
|
---|
1579 | elf_section_data (sec)->sreloc = sreloc;
|
---|
1580 | }
|
---|
1581 |
|
---|
1582 | /* If this is a global symbol, we count the number of
|
---|
1583 | relocations we need for this symbol. */
|
---|
1584 | if (h != NULL)
|
---|
1585 | {
|
---|
1586 | head = &h->dyn_relocs;
|
---|
1587 | }
|
---|
1588 | else
|
---|
1589 | {
|
---|
1590 | /* Track dynamic relocs needed for local syms too.
|
---|
1591 | We really need local syms available to do this
|
---|
1592 | easily. Oh well. */
|
---|
1593 |
|
---|
1594 | asection *s;
|
---|
1595 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
|
---|
1596 | sec, r_symndx);
|
---|
1597 | if (s == NULL)
|
---|
1598 | return FALSE;
|
---|
1599 |
|
---|
1600 | head = ((struct elf32_hppa_dyn_reloc_entry **)
|
---|
1601 | &elf_section_data (s)->local_dynrel);
|
---|
1602 | }
|
---|
1603 |
|
---|
1604 | p = *head;
|
---|
1605 | if (p == NULL || p->sec != sec)
|
---|
1606 | {
|
---|
1607 | p = ((struct elf32_hppa_dyn_reloc_entry *)
|
---|
1608 | bfd_alloc (htab->elf.dynobj,
|
---|
1609 | (bfd_size_type) sizeof *p));
|
---|
1610 | if (p == NULL)
|
---|
1611 | return FALSE;
|
---|
1612 | p->next = *head;
|
---|
1613 | *head = p;
|
---|
1614 | p->sec = sec;
|
---|
1615 | p->count = 0;
|
---|
1616 | #if RELATIVE_DYNRELOCS
|
---|
1617 | p->relative_count = 0;
|
---|
1618 | #endif
|
---|
1619 | }
|
---|
1620 |
|
---|
1621 | p->count += 1;
|
---|
1622 | #if RELATIVE_DYNRELOCS
|
---|
1623 | if (!IS_ABSOLUTE_RELOC (rtype))
|
---|
1624 | p->relative_count += 1;
|
---|
1625 | #endif
|
---|
1626 | }
|
---|
1627 | }
|
---|
1628 | }
|
---|
1629 |
|
---|
1630 | return TRUE;
|
---|
1631 | }
|
---|
1632 |
|
---|
1633 | /* Return the section that should be marked against garbage collection
|
---|
1634 | for a given relocation. */
|
---|
1635 |
|
---|
1636 | static asection *
|
---|
1637 | elf32_hppa_gc_mark_hook (sec, info, rel, h, sym)
|
---|
1638 | asection *sec;
|
---|
1639 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1640 | Elf_Internal_Rela *rel;
|
---|
1641 | struct elf_link_hash_entry *h;
|
---|
1642 | Elf_Internal_Sym *sym;
|
---|
1643 | {
|
---|
1644 | if (h != NULL)
|
---|
1645 | {
|
---|
1646 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
|
---|
1647 | {
|
---|
1648 | case R_PARISC_GNU_VTINHERIT:
|
---|
1649 | case R_PARISC_GNU_VTENTRY:
|
---|
1650 | break;
|
---|
1651 |
|
---|
1652 | default:
|
---|
1653 | switch (h->root.type)
|
---|
1654 | {
|
---|
1655 | case bfd_link_hash_defined:
|
---|
1656 | case bfd_link_hash_defweak:
|
---|
1657 | return h->root.u.def.section;
|
---|
1658 |
|
---|
1659 | case bfd_link_hash_common:
|
---|
1660 | return h->root.u.c.p->section;
|
---|
1661 |
|
---|
1662 | default:
|
---|
1663 | break;
|
---|
1664 | }
|
---|
1665 | }
|
---|
1666 | }
|
---|
1667 | else
|
---|
1668 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
---|
1669 |
|
---|
1670 | return NULL;
|
---|
1671 | }
|
---|
1672 |
|
---|
1673 | /* Update the got and plt entry reference counts for the section being
|
---|
1674 | removed. */
|
---|
1675 |
|
---|
1676 | static bfd_boolean
|
---|
1677 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
|
---|
1678 | bfd *abfd;
|
---|
1679 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1680 | asection *sec;
|
---|
1681 | const Elf_Internal_Rela *relocs;
|
---|
1682 | {
|
---|
1683 | Elf_Internal_Shdr *symtab_hdr;
|
---|
1684 | struct elf_link_hash_entry **sym_hashes;
|
---|
1685 | bfd_signed_vma *local_got_refcounts;
|
---|
1686 | bfd_signed_vma *local_plt_refcounts;
|
---|
1687 | const Elf_Internal_Rela *rel, *relend;
|
---|
1688 |
|
---|
1689 | elf_section_data (sec)->local_dynrel = NULL;
|
---|
1690 |
|
---|
1691 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
---|
1692 | sym_hashes = elf_sym_hashes (abfd);
|
---|
1693 | local_got_refcounts = elf_local_got_refcounts (abfd);
|
---|
1694 | local_plt_refcounts = local_got_refcounts;
|
---|
1695 | if (local_plt_refcounts != NULL)
|
---|
1696 | local_plt_refcounts += symtab_hdr->sh_info;
|
---|
1697 |
|
---|
1698 | relend = relocs + sec->reloc_count;
|
---|
1699 | for (rel = relocs; rel < relend; rel++)
|
---|
1700 | {
|
---|
1701 | unsigned long r_symndx;
|
---|
1702 | unsigned int r_type;
|
---|
1703 | struct elf_link_hash_entry *h = NULL;
|
---|
1704 |
|
---|
1705 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
1706 | if (r_symndx >= symtab_hdr->sh_info)
|
---|
1707 | {
|
---|
1708 | struct elf32_hppa_link_hash_entry *eh;
|
---|
1709 | struct elf32_hppa_dyn_reloc_entry **pp;
|
---|
1710 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
1711 |
|
---|
1712 | h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
---|
1713 | eh = (struct elf32_hppa_link_hash_entry *) h;
|
---|
1714 |
|
---|
1715 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
|
---|
1716 | if (p->sec == sec)
|
---|
1717 | {
|
---|
1718 | /* Everything must go for SEC. */
|
---|
1719 | *pp = p->next;
|
---|
1720 | break;
|
---|
1721 | }
|
---|
1722 | }
|
---|
1723 |
|
---|
1724 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
1725 | switch (r_type)
|
---|
1726 | {
|
---|
1727 | case R_PARISC_DLTIND14F:
|
---|
1728 | case R_PARISC_DLTIND14R:
|
---|
1729 | case R_PARISC_DLTIND21L:
|
---|
1730 | if (h != NULL)
|
---|
1731 | {
|
---|
1732 | if (h->got.refcount > 0)
|
---|
1733 | h->got.refcount -= 1;
|
---|
1734 | }
|
---|
1735 | else if (local_got_refcounts != NULL)
|
---|
1736 | {
|
---|
1737 | if (local_got_refcounts[r_symndx] > 0)
|
---|
1738 | local_got_refcounts[r_symndx] -= 1;
|
---|
1739 | }
|
---|
1740 | break;
|
---|
1741 |
|
---|
1742 | case R_PARISC_PCREL12F:
|
---|
1743 | case R_PARISC_PCREL17C:
|
---|
1744 | case R_PARISC_PCREL17F:
|
---|
1745 | case R_PARISC_PCREL22F:
|
---|
1746 | if (h != NULL)
|
---|
1747 | {
|
---|
1748 | if (h->plt.refcount > 0)
|
---|
1749 | h->plt.refcount -= 1;
|
---|
1750 | }
|
---|
1751 | break;
|
---|
1752 |
|
---|
1753 | case R_PARISC_PLABEL14R:
|
---|
1754 | case R_PARISC_PLABEL21L:
|
---|
1755 | case R_PARISC_PLABEL32:
|
---|
1756 | if (h != NULL)
|
---|
1757 | {
|
---|
1758 | if (h->plt.refcount > 0)
|
---|
1759 | h->plt.refcount -= 1;
|
---|
1760 | }
|
---|
1761 | else if (local_plt_refcounts != NULL)
|
---|
1762 | {
|
---|
1763 | if (local_plt_refcounts[r_symndx] > 0)
|
---|
1764 | local_plt_refcounts[r_symndx] -= 1;
|
---|
1765 | }
|
---|
1766 | break;
|
---|
1767 |
|
---|
1768 | default:
|
---|
1769 | break;
|
---|
1770 | }
|
---|
1771 | }
|
---|
1772 |
|
---|
1773 | return TRUE;
|
---|
1774 | }
|
---|
1775 |
|
---|
1776 | /* Our own version of hide_symbol, so that we can keep plt entries for
|
---|
1777 | plabels. */
|
---|
1778 |
|
---|
1779 | static void
|
---|
1780 | elf32_hppa_hide_symbol (info, h, force_local)
|
---|
1781 | struct bfd_link_info *info;
|
---|
1782 | struct elf_link_hash_entry *h;
|
---|
1783 | bfd_boolean force_local;
|
---|
1784 | {
|
---|
1785 | if (force_local)
|
---|
1786 | {
|
---|
1787 | h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
|
---|
1788 | if (h->dynindx != -1)
|
---|
1789 | {
|
---|
1790 | h->dynindx = -1;
|
---|
1791 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
|
---|
1792 | h->dynstr_index);
|
---|
1793 | }
|
---|
1794 | }
|
---|
1795 |
|
---|
1796 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
|
---|
1797 | {
|
---|
1798 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
1799 | h->plt.offset = (bfd_vma) -1;
|
---|
1800 | }
|
---|
1801 | }
|
---|
1802 |
|
---|
1803 | /* This is the condition under which elf32_hppa_finish_dynamic_symbol
|
---|
1804 | will be called from elflink.h. If elflink.h doesn't call our
|
---|
1805 | finish_dynamic_symbol routine, we'll need to do something about
|
---|
1806 | initializing any .plt and .got entries in elf32_hppa_relocate_section. */
|
---|
1807 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
|
---|
1808 | ((DYN) \
|
---|
1809 | && ((INFO)->shared \
|
---|
1810 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
|
---|
1811 | && ((H)->dynindx != -1 \
|
---|
1812 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
|
---|
1813 |
|
---|
1814 | /* Adjust a symbol defined by a dynamic object and referenced by a
|
---|
1815 | regular object. The current definition is in some section of the
|
---|
1816 | dynamic object, but we're not including those sections. We have to
|
---|
1817 | change the definition to something the rest of the link can
|
---|
1818 | understand. */
|
---|
1819 |
|
---|
1820 | static bfd_boolean
|
---|
1821 | elf32_hppa_adjust_dynamic_symbol (info, h)
|
---|
1822 | struct bfd_link_info *info;
|
---|
1823 | struct elf_link_hash_entry *h;
|
---|
1824 | {
|
---|
1825 | struct elf32_hppa_link_hash_table *htab;
|
---|
1826 | struct elf32_hppa_link_hash_entry *eh;
|
---|
1827 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
1828 | asection *s;
|
---|
1829 | unsigned int power_of_two;
|
---|
1830 |
|
---|
1831 | /* If this is a function, put it in the procedure linkage table. We
|
---|
1832 | will fill in the contents of the procedure linkage table later. */
|
---|
1833 | if (h->type == STT_FUNC
|
---|
1834 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
---|
1835 | {
|
---|
1836 | if (h->plt.refcount <= 0
|
---|
1837 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
---|
1838 | && h->root.type != bfd_link_hash_defweak
|
---|
1839 | && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel
|
---|
1840 | && (!info->shared || info->symbolic)))
|
---|
1841 | {
|
---|
1842 | /* The .plt entry is not needed when:
|
---|
1843 | a) Garbage collection has removed all references to the
|
---|
1844 | symbol, or
|
---|
1845 | b) We know for certain the symbol is defined in this
|
---|
1846 | object, and it's not a weak definition, nor is the symbol
|
---|
1847 | used by a plabel relocation. Either this object is the
|
---|
1848 | application or we are doing a shared symbolic link. */
|
---|
1849 |
|
---|
1850 | /* As a special sop to the hppa ABI, we keep a .plt entry
|
---|
1851 | for functions in sections containing PIC code. */
|
---|
1852 | if (!info->shared
|
---|
1853 | && h->plt.refcount > 0
|
---|
1854 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
---|
1855 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
|
---|
1856 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
|
---|
1857 | else
|
---|
1858 | {
|
---|
1859 | h->plt.offset = (bfd_vma) -1;
|
---|
1860 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
1861 | }
|
---|
1862 | }
|
---|
1863 |
|
---|
1864 | return TRUE;
|
---|
1865 | }
|
---|
1866 | else
|
---|
1867 | h->plt.offset = (bfd_vma) -1;
|
---|
1868 |
|
---|
1869 | /* If this is a weak symbol, and there is a real definition, the
|
---|
1870 | processor independent code will have arranged for us to see the
|
---|
1871 | real definition first, and we can just use the same value. */
|
---|
1872 | if (h->weakdef != NULL)
|
---|
1873 | {
|
---|
1874 | if (h->weakdef->root.type != bfd_link_hash_defined
|
---|
1875 | && h->weakdef->root.type != bfd_link_hash_defweak)
|
---|
1876 | abort ();
|
---|
1877 | h->root.u.def.section = h->weakdef->root.u.def.section;
|
---|
1878 | h->root.u.def.value = h->weakdef->root.u.def.value;
|
---|
1879 | return TRUE;
|
---|
1880 | }
|
---|
1881 |
|
---|
1882 | /* This is a reference to a symbol defined by a dynamic object which
|
---|
1883 | is not a function. */
|
---|
1884 |
|
---|
1885 | /* If we are creating a shared library, we must presume that the
|
---|
1886 | only references to the symbol are via the global offset table.
|
---|
1887 | For such cases we need not do anything here; the relocations will
|
---|
1888 | be handled correctly by relocate_section. */
|
---|
1889 | if (info->shared)
|
---|
1890 | return TRUE;
|
---|
1891 |
|
---|
1892 | /* If there are no references to this symbol that do not use the
|
---|
1893 | GOT, we don't need to generate a copy reloc. */
|
---|
1894 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
|
---|
1895 | return TRUE;
|
---|
1896 |
|
---|
1897 | eh = (struct elf32_hppa_link_hash_entry *) h;
|
---|
1898 | for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
---|
1899 | {
|
---|
1900 | s = p->sec->output_section;
|
---|
1901 | if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
---|
1902 | break;
|
---|
1903 | }
|
---|
1904 |
|
---|
1905 | /* If we didn't find any dynamic relocs in read-only sections, then
|
---|
1906 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */
|
---|
1907 | if (p == NULL)
|
---|
1908 | {
|
---|
1909 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
|
---|
1910 | return TRUE;
|
---|
1911 | }
|
---|
1912 |
|
---|
1913 | /* We must allocate the symbol in our .dynbss section, which will
|
---|
1914 | become part of the .bss section of the executable. There will be
|
---|
1915 | an entry for this symbol in the .dynsym section. The dynamic
|
---|
1916 | object will contain position independent code, so all references
|
---|
1917 | from the dynamic object to this symbol will go through the global
|
---|
1918 | offset table. The dynamic linker will use the .dynsym entry to
|
---|
1919 | determine the address it must put in the global offset table, so
|
---|
1920 | both the dynamic object and the regular object will refer to the
|
---|
1921 | same memory location for the variable. */
|
---|
1922 |
|
---|
1923 | htab = hppa_link_hash_table (info);
|
---|
1924 |
|
---|
1925 | /* We must generate a COPY reloc to tell the dynamic linker to
|
---|
1926 | copy the initial value out of the dynamic object and into the
|
---|
1927 | runtime process image. */
|
---|
1928 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
---|
1929 | {
|
---|
1930 | htab->srelbss->_raw_size += sizeof (Elf32_External_Rela);
|
---|
1931 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
|
---|
1932 | }
|
---|
1933 |
|
---|
1934 | /* We need to figure out the alignment required for this symbol. I
|
---|
1935 | have no idea how other ELF linkers handle this. */
|
---|
1936 |
|
---|
1937 | power_of_two = bfd_log2 (h->size);
|
---|
1938 | if (power_of_two > 3)
|
---|
1939 | power_of_two = 3;
|
---|
1940 |
|
---|
1941 | /* Apply the required alignment. */
|
---|
1942 | s = htab->sdynbss;
|
---|
1943 | s->_raw_size = BFD_ALIGN (s->_raw_size,
|
---|
1944 | (bfd_size_type) (1 << power_of_two));
|
---|
1945 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
|
---|
1946 | {
|
---|
1947 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
|
---|
1948 | return FALSE;
|
---|
1949 | }
|
---|
1950 |
|
---|
1951 | /* Define the symbol as being at this point in the section. */
|
---|
1952 | h->root.u.def.section = s;
|
---|
1953 | h->root.u.def.value = s->_raw_size;
|
---|
1954 |
|
---|
1955 | /* Increment the section size to make room for the symbol. */
|
---|
1956 | s->_raw_size += h->size;
|
---|
1957 |
|
---|
1958 | return TRUE;
|
---|
1959 | }
|
---|
1960 |
|
---|
1961 | /* Called via elf_link_hash_traverse to create .plt entries for an
|
---|
1962 | application that uses statically linked PIC functions. Similar to
|
---|
1963 | the first part of elf32_hppa_adjust_dynamic_symbol. */
|
---|
1964 |
|
---|
1965 | static bfd_boolean
|
---|
1966 | mark_PIC_calls (h, inf)
|
---|
1967 | struct elf_link_hash_entry *h;
|
---|
1968 | PTR inf ATTRIBUTE_UNUSED;
|
---|
1969 | {
|
---|
1970 | if (h->root.type == bfd_link_hash_warning)
|
---|
1971 | h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
---|
1972 |
|
---|
1973 | if (! (h->plt.refcount > 0
|
---|
1974 | && (h->root.type == bfd_link_hash_defined
|
---|
1975 | || h->root.type == bfd_link_hash_defweak)
|
---|
1976 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0))
|
---|
1977 | {
|
---|
1978 | h->plt.offset = (bfd_vma) -1;
|
---|
1979 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
1980 | return TRUE;
|
---|
1981 | }
|
---|
1982 |
|
---|
1983 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
---|
1984 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
|
---|
1985 |
|
---|
1986 | return TRUE;
|
---|
1987 | }
|
---|
1988 |
|
---|
1989 | /* Allocate space in the .plt for entries that won't have relocations.
|
---|
1990 | ie. pic_call and plabel entries. */
|
---|
1991 |
|
---|
1992 | static bfd_boolean
|
---|
1993 | allocate_plt_static (h, inf)
|
---|
1994 | struct elf_link_hash_entry *h;
|
---|
1995 | PTR inf;
|
---|
1996 | {
|
---|
1997 | struct bfd_link_info *info;
|
---|
1998 | struct elf32_hppa_link_hash_table *htab;
|
---|
1999 | asection *s;
|
---|
2000 |
|
---|
2001 | if (h->root.type == bfd_link_hash_indirect)
|
---|
2002 | return TRUE;
|
---|
2003 |
|
---|
2004 | if (h->root.type == bfd_link_hash_warning)
|
---|
2005 | h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
---|
2006 |
|
---|
2007 | info = (struct bfd_link_info *) inf;
|
---|
2008 | htab = hppa_link_hash_table (info);
|
---|
2009 | if (((struct elf32_hppa_link_hash_entry *) h)->pic_call)
|
---|
2010 | {
|
---|
2011 | /* Make an entry in the .plt section for non-pic code that is
|
---|
2012 | calling pic code. */
|
---|
2013 | ((struct elf32_hppa_link_hash_entry *) h)->plabel = 0;
|
---|
2014 | s = htab->splt;
|
---|
2015 | h->plt.offset = s->_raw_size;
|
---|
2016 | s->_raw_size += PLT_ENTRY_SIZE;
|
---|
2017 | }
|
---|
2018 | else if (htab->elf.dynamic_sections_created
|
---|
2019 | && h->plt.refcount > 0)
|
---|
2020 | {
|
---|
2021 | /* Make sure this symbol is output as a dynamic symbol.
|
---|
2022 | Undefined weak syms won't yet be marked as dynamic. */
|
---|
2023 | if (h->dynindx == -1
|
---|
2024 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
|
---|
2025 | && h->type != STT_PARISC_MILLI)
|
---|
2026 | {
|
---|
2027 | if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
---|
2028 | return FALSE;
|
---|
2029 | }
|
---|
2030 |
|
---|
2031 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
|
---|
2032 | {
|
---|
2033 | /* Allocate these later. From this point on, h->plabel
|
---|
2034 | means that the plt entry is only used by a plabel.
|
---|
2035 | We'll be using a normal plt entry for this symbol, so
|
---|
2036 | clear the plabel indicator. */
|
---|
2037 | ((struct elf32_hppa_link_hash_entry *) h)->plabel = 0;
|
---|
2038 | }
|
---|
2039 | else if (((struct elf32_hppa_link_hash_entry *) h)->plabel)
|
---|
2040 | {
|
---|
2041 | /* Make an entry in the .plt section for plabel references
|
---|
2042 | that won't have a .plt entry for other reasons. */
|
---|
2043 | s = htab->splt;
|
---|
2044 | h->plt.offset = s->_raw_size;
|
---|
2045 | s->_raw_size += PLT_ENTRY_SIZE;
|
---|
2046 | }
|
---|
2047 | else
|
---|
2048 | {
|
---|
2049 | /* No .plt entry needed. */
|
---|
2050 | h->plt.offset = (bfd_vma) -1;
|
---|
2051 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
2052 | }
|
---|
2053 | }
|
---|
2054 | else
|
---|
2055 | {
|
---|
2056 | h->plt.offset = (bfd_vma) -1;
|
---|
2057 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
2058 | }
|
---|
2059 |
|
---|
2060 | return TRUE;
|
---|
2061 | }
|
---|
2062 |
|
---|
2063 | /* Allocate space in .plt, .got and associated reloc sections for
|
---|
2064 | global syms. */
|
---|
2065 |
|
---|
2066 | static bfd_boolean
|
---|
2067 | allocate_dynrelocs (h, inf)
|
---|
2068 | struct elf_link_hash_entry *h;
|
---|
2069 | PTR inf;
|
---|
2070 | {
|
---|
2071 | struct bfd_link_info *info;
|
---|
2072 | struct elf32_hppa_link_hash_table *htab;
|
---|
2073 | asection *s;
|
---|
2074 | struct elf32_hppa_link_hash_entry *eh;
|
---|
2075 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
2076 |
|
---|
2077 | if (h->root.type == bfd_link_hash_indirect)
|
---|
2078 | return TRUE;
|
---|
2079 |
|
---|
2080 | if (h->root.type == bfd_link_hash_warning)
|
---|
2081 | h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
---|
2082 |
|
---|
2083 | info = (struct bfd_link_info *) inf;
|
---|
2084 | htab = hppa_link_hash_table (info);
|
---|
2085 | if (htab->elf.dynamic_sections_created
|
---|
2086 | && h->plt.offset != (bfd_vma) -1
|
---|
2087 | && !((struct elf32_hppa_link_hash_entry *) h)->pic_call
|
---|
2088 | && !((struct elf32_hppa_link_hash_entry *) h)->plabel)
|
---|
2089 | {
|
---|
2090 | /* Make an entry in the .plt section. */
|
---|
2091 | s = htab->splt;
|
---|
2092 | h->plt.offset = s->_raw_size;
|
---|
2093 | s->_raw_size += PLT_ENTRY_SIZE;
|
---|
2094 |
|
---|
2095 | /* We also need to make an entry in the .rela.plt section. */
|
---|
2096 | htab->srelplt->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2097 | htab->need_plt_stub = 1;
|
---|
2098 | }
|
---|
2099 |
|
---|
2100 | if (h->got.refcount > 0)
|
---|
2101 | {
|
---|
2102 | /* Make sure this symbol is output as a dynamic symbol.
|
---|
2103 | Undefined weak syms won't yet be marked as dynamic. */
|
---|
2104 | if (h->dynindx == -1
|
---|
2105 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
|
---|
2106 | && h->type != STT_PARISC_MILLI)
|
---|
2107 | {
|
---|
2108 | if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
---|
2109 | return FALSE;
|
---|
2110 | }
|
---|
2111 |
|
---|
2112 | s = htab->sgot;
|
---|
2113 | h->got.offset = s->_raw_size;
|
---|
2114 | s->_raw_size += GOT_ENTRY_SIZE;
|
---|
2115 | if (htab->elf.dynamic_sections_created
|
---|
2116 | && (info->shared
|
---|
2117 | || (h->dynindx != -1
|
---|
2118 | && h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0))
|
---|
2119 | {
|
---|
2120 | htab->srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2121 | }
|
---|
2122 | }
|
---|
2123 | else
|
---|
2124 | h->got.offset = (bfd_vma) -1;
|
---|
2125 |
|
---|
2126 | eh = (struct elf32_hppa_link_hash_entry *) h;
|
---|
2127 | if (eh->dyn_relocs == NULL)
|
---|
2128 | return TRUE;
|
---|
2129 |
|
---|
2130 | /* If this is a -Bsymbolic shared link, then we need to discard all
|
---|
2131 | space allocated for dynamic pc-relative relocs against symbols
|
---|
2132 | defined in a regular object. For the normal shared case, discard
|
---|
2133 | space for relocs that have become local due to symbol visibility
|
---|
2134 | changes. */
|
---|
2135 | if (info->shared)
|
---|
2136 | {
|
---|
2137 | #if RELATIVE_DYNRELOCS
|
---|
2138 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
---|
2139 | && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
|
---|
2140 | || info->symbolic))
|
---|
2141 | {
|
---|
2142 | struct elf32_hppa_dyn_reloc_entry **pp;
|
---|
2143 |
|
---|
2144 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
---|
2145 | {
|
---|
2146 | p->count -= p->relative_count;
|
---|
2147 | p->relative_count = 0;
|
---|
2148 | if (p->count == 0)
|
---|
2149 | *pp = p->next;
|
---|
2150 | else
|
---|
2151 | pp = &p->next;
|
---|
2152 | }
|
---|
2153 | }
|
---|
2154 | #endif
|
---|
2155 | }
|
---|
2156 | else
|
---|
2157 | {
|
---|
2158 | /* For the non-shared case, discard space for relocs against
|
---|
2159 | symbols which turn out to need copy relocs or are not
|
---|
2160 | dynamic. */
|
---|
2161 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
---|
2162 | && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
---|
2163 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
---|
2164 | || (htab->elf.dynamic_sections_created
|
---|
2165 | && (h->root.type == bfd_link_hash_undefweak
|
---|
2166 | || h->root.type == bfd_link_hash_undefined))))
|
---|
2167 | {
|
---|
2168 | /* Make sure this symbol is output as a dynamic symbol.
|
---|
2169 | Undefined weak syms won't yet be marked as dynamic. */
|
---|
2170 | if (h->dynindx == -1
|
---|
2171 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
|
---|
2172 | && h->type != STT_PARISC_MILLI)
|
---|
2173 | {
|
---|
2174 | if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
---|
2175 | return FALSE;
|
---|
2176 | }
|
---|
2177 |
|
---|
2178 | /* If that succeeded, we know we'll be keeping all the
|
---|
2179 | relocs. */
|
---|
2180 | if (h->dynindx != -1)
|
---|
2181 | goto keep;
|
---|
2182 | }
|
---|
2183 |
|
---|
2184 | eh->dyn_relocs = NULL;
|
---|
2185 | return TRUE;
|
---|
2186 |
|
---|
2187 | keep: ;
|
---|
2188 | }
|
---|
2189 |
|
---|
2190 | /* Finally, allocate space. */
|
---|
2191 | for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
---|
2192 | {
|
---|
2193 | asection *sreloc = elf_section_data (p->sec)->sreloc;
|
---|
2194 | sreloc->_raw_size += p->count * sizeof (Elf32_External_Rela);
|
---|
2195 | }
|
---|
2196 |
|
---|
2197 | return TRUE;
|
---|
2198 | }
|
---|
2199 |
|
---|
2200 | /* This function is called via elf_link_hash_traverse to force
|
---|
2201 | millicode symbols local so they do not end up as globals in the
|
---|
2202 | dynamic symbol table. We ought to be able to do this in
|
---|
2203 | adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
|
---|
2204 | for all dynamic symbols. Arguably, this is a bug in
|
---|
2205 | elf_adjust_dynamic_symbol. */
|
---|
2206 |
|
---|
2207 | static bfd_boolean
|
---|
2208 | clobber_millicode_symbols (h, info)
|
---|
2209 | struct elf_link_hash_entry *h;
|
---|
2210 | struct bfd_link_info *info;
|
---|
2211 | {
|
---|
2212 | if (h->root.type == bfd_link_hash_warning)
|
---|
2213 | h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
---|
2214 |
|
---|
2215 | if (h->type == STT_PARISC_MILLI
|
---|
2216 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
---|
2217 | {
|
---|
2218 | elf32_hppa_hide_symbol (info, h, TRUE);
|
---|
2219 | }
|
---|
2220 | return TRUE;
|
---|
2221 | }
|
---|
2222 |
|
---|
2223 | /* Find any dynamic relocs that apply to read-only sections. */
|
---|
2224 |
|
---|
2225 | static bfd_boolean
|
---|
2226 | readonly_dynrelocs (h, inf)
|
---|
2227 | struct elf_link_hash_entry *h;
|
---|
2228 | PTR inf;
|
---|
2229 | {
|
---|
2230 | struct elf32_hppa_link_hash_entry *eh;
|
---|
2231 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
2232 |
|
---|
2233 | if (h->root.type == bfd_link_hash_warning)
|
---|
2234 | h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
---|
2235 |
|
---|
2236 | eh = (struct elf32_hppa_link_hash_entry *) h;
|
---|
2237 | for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
---|
2238 | {
|
---|
2239 | asection *s = p->sec->output_section;
|
---|
2240 |
|
---|
2241 | if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
---|
2242 | {
|
---|
2243 | struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
---|
2244 |
|
---|
2245 | info->flags |= DF_TEXTREL;
|
---|
2246 |
|
---|
2247 | /* Not an error, just cut short the traversal. */
|
---|
2248 | return FALSE;
|
---|
2249 | }
|
---|
2250 | }
|
---|
2251 | return TRUE;
|
---|
2252 | }
|
---|
2253 |
|
---|
2254 | /* Set the sizes of the dynamic sections. */
|
---|
2255 |
|
---|
2256 | static bfd_boolean
|
---|
2257 | elf32_hppa_size_dynamic_sections (output_bfd, info)
|
---|
2258 | bfd *output_bfd ATTRIBUTE_UNUSED;
|
---|
2259 | struct bfd_link_info *info;
|
---|
2260 | {
|
---|
2261 | struct elf32_hppa_link_hash_table *htab;
|
---|
2262 | bfd *dynobj;
|
---|
2263 | bfd *ibfd;
|
---|
2264 | asection *s;
|
---|
2265 | bfd_boolean relocs;
|
---|
2266 |
|
---|
2267 | htab = hppa_link_hash_table (info);
|
---|
2268 | dynobj = htab->elf.dynobj;
|
---|
2269 | if (dynobj == NULL)
|
---|
2270 | abort ();
|
---|
2271 |
|
---|
2272 | if (htab->elf.dynamic_sections_created)
|
---|
2273 | {
|
---|
2274 | /* Set the contents of the .interp section to the interpreter. */
|
---|
2275 | if (! info->shared)
|
---|
2276 | {
|
---|
2277 | s = bfd_get_section_by_name (dynobj, ".interp");
|
---|
2278 | if (s == NULL)
|
---|
2279 | abort ();
|
---|
2280 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
|
---|
2281 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
---|
2282 | }
|
---|
2283 |
|
---|
2284 | /* Force millicode symbols local. */
|
---|
2285 | elf_link_hash_traverse (&htab->elf,
|
---|
2286 | clobber_millicode_symbols,
|
---|
2287 | info);
|
---|
2288 | }
|
---|
2289 | else
|
---|
2290 | {
|
---|
2291 | /* Run through the function symbols, looking for any that are
|
---|
2292 | PIC, and mark them as needing .plt entries so that %r19 will
|
---|
2293 | be set up. */
|
---|
2294 | if (! info->shared)
|
---|
2295 | elf_link_hash_traverse (&htab->elf, mark_PIC_calls, (PTR) info);
|
---|
2296 | }
|
---|
2297 |
|
---|
2298 | /* Set up .got and .plt offsets for local syms, and space for local
|
---|
2299 | dynamic relocs. */
|
---|
2300 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
---|
2301 | {
|
---|
2302 | bfd_signed_vma *local_got;
|
---|
2303 | bfd_signed_vma *end_local_got;
|
---|
2304 | bfd_signed_vma *local_plt;
|
---|
2305 | bfd_signed_vma *end_local_plt;
|
---|
2306 | bfd_size_type locsymcount;
|
---|
2307 | Elf_Internal_Shdr *symtab_hdr;
|
---|
2308 | asection *srel;
|
---|
2309 |
|
---|
2310 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
|
---|
2311 | continue;
|
---|
2312 |
|
---|
2313 | for (s = ibfd->sections; s != NULL; s = s->next)
|
---|
2314 | {
|
---|
2315 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
2316 |
|
---|
2317 | for (p = ((struct elf32_hppa_dyn_reloc_entry *)
|
---|
2318 | elf_section_data (s)->local_dynrel);
|
---|
2319 | p != NULL;
|
---|
2320 | p = p->next)
|
---|
2321 | {
|
---|
2322 | if (!bfd_is_abs_section (p->sec)
|
---|
2323 | && bfd_is_abs_section (p->sec->output_section))
|
---|
2324 | {
|
---|
2325 | /* Input section has been discarded, either because
|
---|
2326 | it is a copy of a linkonce section or due to
|
---|
2327 | linker script /DISCARD/, so we'll be discarding
|
---|
2328 | the relocs too. */
|
---|
2329 | }
|
---|
2330 | else if (p->count != 0)
|
---|
2331 | {
|
---|
2332 | srel = elf_section_data (p->sec)->sreloc;
|
---|
2333 | srel->_raw_size += p->count * sizeof (Elf32_External_Rela);
|
---|
2334 | if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
---|
2335 | info->flags |= DF_TEXTREL;
|
---|
2336 | }
|
---|
2337 | }
|
---|
2338 | }
|
---|
2339 |
|
---|
2340 | local_got = elf_local_got_refcounts (ibfd);
|
---|
2341 | if (!local_got)
|
---|
2342 | continue;
|
---|
2343 |
|
---|
2344 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
|
---|
2345 | locsymcount = symtab_hdr->sh_info;
|
---|
2346 | end_local_got = local_got + locsymcount;
|
---|
2347 | s = htab->sgot;
|
---|
2348 | srel = htab->srelgot;
|
---|
2349 | for (; local_got < end_local_got; ++local_got)
|
---|
2350 | {
|
---|
2351 | if (*local_got > 0)
|
---|
2352 | {
|
---|
2353 | *local_got = s->_raw_size;
|
---|
2354 | s->_raw_size += GOT_ENTRY_SIZE;
|
---|
2355 | if (info->shared)
|
---|
2356 | srel->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2357 | }
|
---|
2358 | else
|
---|
2359 | *local_got = (bfd_vma) -1;
|
---|
2360 | }
|
---|
2361 |
|
---|
2362 | local_plt = end_local_got;
|
---|
2363 | end_local_plt = local_plt + locsymcount;
|
---|
2364 | if (! htab->elf.dynamic_sections_created)
|
---|
2365 | {
|
---|
2366 | /* Won't be used, but be safe. */
|
---|
2367 | for (; local_plt < end_local_plt; ++local_plt)
|
---|
2368 | *local_plt = (bfd_vma) -1;
|
---|
2369 | }
|
---|
2370 | else
|
---|
2371 | {
|
---|
2372 | s = htab->splt;
|
---|
2373 | srel = htab->srelplt;
|
---|
2374 | for (; local_plt < end_local_plt; ++local_plt)
|
---|
2375 | {
|
---|
2376 | if (*local_plt > 0)
|
---|
2377 | {
|
---|
2378 | *local_plt = s->_raw_size;
|
---|
2379 | s->_raw_size += PLT_ENTRY_SIZE;
|
---|
2380 | if (info->shared)
|
---|
2381 | srel->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2382 | }
|
---|
2383 | else
|
---|
2384 | *local_plt = (bfd_vma) -1;
|
---|
2385 | }
|
---|
2386 | }
|
---|
2387 | }
|
---|
2388 |
|
---|
2389 | /* Do all the .plt entries without relocs first. The dynamic linker
|
---|
2390 | uses the last .plt reloc to find the end of the .plt (and hence
|
---|
2391 | the start of the .got) for lazy linking. */
|
---|
2392 | elf_link_hash_traverse (&htab->elf, allocate_plt_static, (PTR) info);
|
---|
2393 |
|
---|
2394 | /* Allocate global sym .plt and .got entries, and space for global
|
---|
2395 | sym dynamic relocs. */
|
---|
2396 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
|
---|
2397 |
|
---|
2398 | /* The check_relocs and adjust_dynamic_symbol entry points have
|
---|
2399 | determined the sizes of the various dynamic sections. Allocate
|
---|
2400 | memory for them. */
|
---|
2401 | relocs = FALSE;
|
---|
2402 | for (s = dynobj->sections; s != NULL; s = s->next)
|
---|
2403 | {
|
---|
2404 | if ((s->flags & SEC_LINKER_CREATED) == 0)
|
---|
2405 | continue;
|
---|
2406 |
|
---|
2407 | if (s == htab->splt)
|
---|
2408 | {
|
---|
2409 | if (htab->need_plt_stub)
|
---|
2410 | {
|
---|
2411 | /* Make space for the plt stub at the end of the .plt
|
---|
2412 | section. We want this stub right at the end, up
|
---|
2413 | against the .got section. */
|
---|
2414 | int gotalign = bfd_section_alignment (dynobj, htab->sgot);
|
---|
2415 | int pltalign = bfd_section_alignment (dynobj, s);
|
---|
2416 | bfd_size_type mask;
|
---|
2417 |
|
---|
2418 | if (gotalign > pltalign)
|
---|
2419 | bfd_set_section_alignment (dynobj, s, gotalign);
|
---|
2420 | mask = ((bfd_size_type) 1 << gotalign) - 1;
|
---|
2421 | s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask;
|
---|
2422 | }
|
---|
2423 | }
|
---|
2424 | else if (s == htab->sgot)
|
---|
2425 | ;
|
---|
2426 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
|
---|
2427 | {
|
---|
2428 | if (s->_raw_size != 0)
|
---|
2429 | {
|
---|
2430 | /* Remember whether there are any reloc sections other
|
---|
2431 | than .rela.plt. */
|
---|
2432 | if (s != htab->srelplt)
|
---|
2433 | relocs = TRUE;
|
---|
2434 |
|
---|
2435 | /* We use the reloc_count field as a counter if we need
|
---|
2436 | to copy relocs into the output file. */
|
---|
2437 | s->reloc_count = 0;
|
---|
2438 | }
|
---|
2439 | }
|
---|
2440 | else
|
---|
2441 | {
|
---|
2442 | /* It's not one of our sections, so don't allocate space. */
|
---|
2443 | continue;
|
---|
2444 | }
|
---|
2445 |
|
---|
2446 | if (s->_raw_size == 0)
|
---|
2447 | {
|
---|
2448 | /* If we don't need this section, strip it from the
|
---|
2449 | output file. This is mostly to handle .rela.bss and
|
---|
2450 | .rela.plt. We must create both sections in
|
---|
2451 | create_dynamic_sections, because they must be created
|
---|
2452 | before the linker maps input sections to output
|
---|
2453 | sections. The linker does that before
|
---|
2454 | adjust_dynamic_symbol is called, and it is that
|
---|
2455 | function which decides whether anything needs to go
|
---|
2456 | into these sections. */
|
---|
2457 | _bfd_strip_section_from_output (info, s);
|
---|
2458 | continue;
|
---|
2459 | }
|
---|
2460 |
|
---|
2461 | /* Allocate memory for the section contents. Zero it, because
|
---|
2462 | we may not fill in all the reloc sections. */
|
---|
2463 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
|
---|
2464 | if (s->contents == NULL && s->_raw_size != 0)
|
---|
2465 | return FALSE;
|
---|
2466 | }
|
---|
2467 |
|
---|
2468 | if (htab->elf.dynamic_sections_created)
|
---|
2469 | {
|
---|
2470 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
|
---|
2471 | actually has nothing to do with the PLT, it is how we
|
---|
2472 | communicate the LTP value of a load module to the dynamic
|
---|
2473 | linker. */
|
---|
2474 | #define add_dynamic_entry(TAG, VAL) \
|
---|
2475 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
|
---|
2476 |
|
---|
2477 | if (!add_dynamic_entry (DT_PLTGOT, 0))
|
---|
2478 | return FALSE;
|
---|
2479 |
|
---|
2480 | /* Add some entries to the .dynamic section. We fill in the
|
---|
2481 | values later, in elf32_hppa_finish_dynamic_sections, but we
|
---|
2482 | must add the entries now so that we get the correct size for
|
---|
2483 | the .dynamic section. The DT_DEBUG entry is filled in by the
|
---|
2484 | dynamic linker and used by the debugger. */
|
---|
2485 | if (!info->shared)
|
---|
2486 | {
|
---|
2487 | if (!add_dynamic_entry (DT_DEBUG, 0))
|
---|
2488 | return FALSE;
|
---|
2489 | }
|
---|
2490 |
|
---|
2491 | if (htab->srelplt->_raw_size != 0)
|
---|
2492 | {
|
---|
2493 | if (!add_dynamic_entry (DT_PLTRELSZ, 0)
|
---|
2494 | || !add_dynamic_entry (DT_PLTREL, DT_RELA)
|
---|
2495 | || !add_dynamic_entry (DT_JMPREL, 0))
|
---|
2496 | return FALSE;
|
---|
2497 | }
|
---|
2498 |
|
---|
2499 | if (relocs)
|
---|
2500 | {
|
---|
2501 | if (!add_dynamic_entry (DT_RELA, 0)
|
---|
2502 | || !add_dynamic_entry (DT_RELASZ, 0)
|
---|
2503 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
|
---|
2504 | return FALSE;
|
---|
2505 |
|
---|
2506 | /* If any dynamic relocs apply to a read-only section,
|
---|
2507 | then we need a DT_TEXTREL entry. */
|
---|
2508 | if ((info->flags & DF_TEXTREL) == 0)
|
---|
2509 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
|
---|
2510 | (PTR) info);
|
---|
2511 |
|
---|
2512 | if ((info->flags & DF_TEXTREL) != 0)
|
---|
2513 | {
|
---|
2514 | if (!add_dynamic_entry (DT_TEXTREL, 0))
|
---|
2515 | return FALSE;
|
---|
2516 | }
|
---|
2517 | }
|
---|
2518 | }
|
---|
2519 | #undef add_dynamic_entry
|
---|
2520 |
|
---|
2521 | return TRUE;
|
---|
2522 | }
|
---|
2523 |
|
---|
2524 | /* External entry points for sizing and building linker stubs. */
|
---|
2525 |
|
---|
2526 | /* Set up various things so that we can make a list of input sections
|
---|
2527 | for each output section included in the link. Returns -1 on error,
|
---|
2528 | 0 when no stubs will be needed, and 1 on success. */
|
---|
2529 |
|
---|
2530 | int
|
---|
2531 | elf32_hppa_setup_section_lists (output_bfd, info)
|
---|
2532 | bfd *output_bfd;
|
---|
2533 | struct bfd_link_info *info;
|
---|
2534 | {
|
---|
2535 | bfd *input_bfd;
|
---|
2536 | unsigned int bfd_count;
|
---|
2537 | int top_id, top_index;
|
---|
2538 | asection *section;
|
---|
2539 | asection **input_list, **list;
|
---|
2540 | bfd_size_type amt;
|
---|
2541 | struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
|
---|
2542 |
|
---|
2543 | if (htab->elf.root.creator->flavour != bfd_target_elf_flavour)
|
---|
2544 | return 0;
|
---|
2545 |
|
---|
2546 | /* Count the number of input BFDs and find the top input section id. */
|
---|
2547 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
|
---|
2548 | input_bfd != NULL;
|
---|
2549 | input_bfd = input_bfd->link_next)
|
---|
2550 | {
|
---|
2551 | bfd_count += 1;
|
---|
2552 | for (section = input_bfd->sections;
|
---|
2553 | section != NULL;
|
---|
2554 | section = section->next)
|
---|
2555 | {
|
---|
2556 | if (top_id < section->id)
|
---|
2557 | top_id = section->id;
|
---|
2558 | }
|
---|
2559 | }
|
---|
2560 | htab->bfd_count = bfd_count;
|
---|
2561 |
|
---|
2562 | amt = sizeof (struct map_stub) * (top_id + 1);
|
---|
2563 | htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
|
---|
2564 | if (htab->stub_group == NULL)
|
---|
2565 | return -1;
|
---|
2566 |
|
---|
2567 | /* We can't use output_bfd->section_count here to find the top output
|
---|
2568 | section index as some sections may have been removed, and
|
---|
2569 | _bfd_strip_section_from_output doesn't renumber the indices. */
|
---|
2570 | for (section = output_bfd->sections, top_index = 0;
|
---|
2571 | section != NULL;
|
---|
2572 | section = section->next)
|
---|
2573 | {
|
---|
2574 | if (top_index < section->index)
|
---|
2575 | top_index = section->index;
|
---|
2576 | }
|
---|
2577 |
|
---|
2578 | htab->top_index = top_index;
|
---|
2579 | amt = sizeof (asection *) * (top_index + 1);
|
---|
2580 | input_list = (asection **) bfd_malloc (amt);
|
---|
2581 | htab->input_list = input_list;
|
---|
2582 | if (input_list == NULL)
|
---|
2583 | return -1;
|
---|
2584 |
|
---|
2585 | /* For sections we aren't interested in, mark their entries with a
|
---|
2586 | value we can check later. */
|
---|
2587 | list = input_list + top_index;
|
---|
2588 | do
|
---|
2589 | *list = bfd_abs_section_ptr;
|
---|
2590 | while (list-- != input_list);
|
---|
2591 |
|
---|
2592 | for (section = output_bfd->sections;
|
---|
2593 | section != NULL;
|
---|
2594 | section = section->next)
|
---|
2595 | {
|
---|
2596 | if ((section->flags & SEC_CODE) != 0)
|
---|
2597 | input_list[section->index] = NULL;
|
---|
2598 | }
|
---|
2599 |
|
---|
2600 | return 1;
|
---|
2601 | }
|
---|
2602 |
|
---|
2603 | /* The linker repeatedly calls this function for each input section,
|
---|
2604 | in the order that input sections are linked into output sections.
|
---|
2605 | Build lists of input sections to determine groupings between which
|
---|
2606 | we may insert linker stubs. */
|
---|
2607 |
|
---|
2608 | void
|
---|
2609 | elf32_hppa_next_input_section (info, isec)
|
---|
2610 | struct bfd_link_info *info;
|
---|
2611 | asection *isec;
|
---|
2612 | {
|
---|
2613 | struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
|
---|
2614 |
|
---|
2615 | if (isec->output_section->index <= htab->top_index)
|
---|
2616 | {
|
---|
2617 | asection **list = htab->input_list + isec->output_section->index;
|
---|
2618 | if (*list != bfd_abs_section_ptr)
|
---|
2619 | {
|
---|
2620 | /* Steal the link_sec pointer for our list. */
|
---|
2621 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
|
---|
2622 | /* This happens to make the list in reverse order,
|
---|
2623 | which is what we want. */
|
---|
2624 | PREV_SEC (isec) = *list;
|
---|
2625 | *list = isec;
|
---|
2626 | }
|
---|
2627 | }
|
---|
2628 | }
|
---|
2629 |
|
---|
2630 | /* See whether we can group stub sections together. Grouping stub
|
---|
2631 | sections may result in fewer stubs. More importantly, we need to
|
---|
2632 | put all .init* and .fini* stubs at the beginning of the .init or
|
---|
2633 | .fini output sections respectively, because glibc splits the
|
---|
2634 | _init and _fini functions into multiple parts. Putting a stub in
|
---|
2635 | the middle of a function is not a good idea. */
|
---|
2636 |
|
---|
2637 | static void
|
---|
2638 | group_sections (htab, stub_group_size, stubs_always_before_branch)
|
---|
2639 | struct elf32_hppa_link_hash_table *htab;
|
---|
2640 | bfd_size_type stub_group_size;
|
---|
2641 | bfd_boolean stubs_always_before_branch;
|
---|
2642 | {
|
---|
2643 | asection **list = htab->input_list + htab->top_index;
|
---|
2644 | do
|
---|
2645 | {
|
---|
2646 | asection *tail = *list;
|
---|
2647 | if (tail == bfd_abs_section_ptr)
|
---|
2648 | continue;
|
---|
2649 | while (tail != NULL)
|
---|
2650 | {
|
---|
2651 | asection *curr;
|
---|
2652 | asection *prev;
|
---|
2653 | bfd_size_type total;
|
---|
2654 | bfd_boolean big_sec;
|
---|
2655 |
|
---|
2656 | curr = tail;
|
---|
2657 | if (tail->_cooked_size)
|
---|
2658 | total = tail->_cooked_size;
|
---|
2659 | else
|
---|
2660 | total = tail->_raw_size;
|
---|
2661 | big_sec = total >= stub_group_size;
|
---|
2662 |
|
---|
2663 | while ((prev = PREV_SEC (curr)) != NULL
|
---|
2664 | && ((total += curr->output_offset - prev->output_offset)
|
---|
2665 | < stub_group_size))
|
---|
2666 | curr = prev;
|
---|
2667 |
|
---|
2668 | /* OK, the size from the start of CURR to the end is less
|
---|
2669 | than 240000 bytes and thus can be handled by one stub
|
---|
2670 | section. (or the tail section is itself larger than
|
---|
2671 | 240000 bytes, in which case we may be toast.)
|
---|
2672 | We should really be keeping track of the total size of
|
---|
2673 | stubs added here, as stubs contribute to the final output
|
---|
2674 | section size. That's a little tricky, and this way will
|
---|
2675 | only break if stubs added total more than 22144 bytes, or
|
---|
2676 | 2768 long branch stubs. It seems unlikely for more than
|
---|
2677 | 2768 different functions to be called, especially from
|
---|
2678 | code only 240000 bytes long. This limit used to be
|
---|
2679 | 250000, but c++ code tends to generate lots of little
|
---|
2680 | functions, and sometimes violated the assumption. */
|
---|
2681 | do
|
---|
2682 | {
|
---|
2683 | prev = PREV_SEC (tail);
|
---|
2684 | /* Set up this stub group. */
|
---|
2685 | htab->stub_group[tail->id].link_sec = curr;
|
---|
2686 | }
|
---|
2687 | while (tail != curr && (tail = prev) != NULL);
|
---|
2688 |
|
---|
2689 | /* But wait, there's more! Input sections up to 240000
|
---|
2690 | bytes before the stub section can be handled by it too.
|
---|
2691 | Don't do this if we have a really large section after the
|
---|
2692 | stubs, as adding more stubs increases the chance that
|
---|
2693 | branches may not reach into the stub section. */
|
---|
2694 | if (!stubs_always_before_branch && !big_sec)
|
---|
2695 | {
|
---|
2696 | total = 0;
|
---|
2697 | while (prev != NULL
|
---|
2698 | && ((total += tail->output_offset - prev->output_offset)
|
---|
2699 | < stub_group_size))
|
---|
2700 | {
|
---|
2701 | tail = prev;
|
---|
2702 | prev = PREV_SEC (tail);
|
---|
2703 | htab->stub_group[tail->id].link_sec = curr;
|
---|
2704 | }
|
---|
2705 | }
|
---|
2706 | tail = prev;
|
---|
2707 | }
|
---|
2708 | }
|
---|
2709 | while (list-- != htab->input_list);
|
---|
2710 | free (htab->input_list);
|
---|
2711 | #undef PREV_SEC
|
---|
2712 | }
|
---|
2713 |
|
---|
2714 | /* Read in all local syms for all input bfds, and create hash entries
|
---|
2715 | for export stubs if we are building a multi-subspace shared lib.
|
---|
2716 | Returns -1 on error, 1 if export stubs created, 0 otherwise. */
|
---|
2717 |
|
---|
2718 | static int
|
---|
2719 | get_local_syms (output_bfd, input_bfd, info)
|
---|
2720 | bfd *output_bfd;
|
---|
2721 | bfd *input_bfd;
|
---|
2722 | struct bfd_link_info *info;
|
---|
2723 | {
|
---|
2724 | unsigned int bfd_indx;
|
---|
2725 | Elf_Internal_Sym *local_syms, **all_local_syms;
|
---|
2726 | int stub_changed = 0;
|
---|
2727 | struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
|
---|
2728 |
|
---|
2729 | /* We want to read in symbol extension records only once. To do this
|
---|
2730 | we need to read in the local symbols in parallel and save them for
|
---|
2731 | later use; so hold pointers to the local symbols in an array. */
|
---|
2732 | bfd_size_type amt = sizeof (Elf_Internal_Sym *) * htab->bfd_count;
|
---|
2733 | all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt);
|
---|
2734 | htab->all_local_syms = all_local_syms;
|
---|
2735 | if (all_local_syms == NULL)
|
---|
2736 | return -1;
|
---|
2737 |
|
---|
2738 | /* Walk over all the input BFDs, swapping in local symbols.
|
---|
2739 | If we are creating a shared library, create hash entries for the
|
---|
2740 | export stubs. */
|
---|
2741 | for (bfd_indx = 0;
|
---|
2742 | input_bfd != NULL;
|
---|
2743 | input_bfd = input_bfd->link_next, bfd_indx++)
|
---|
2744 | {
|
---|
2745 | Elf_Internal_Shdr *symtab_hdr;
|
---|
2746 |
|
---|
2747 | /* We'll need the symbol table in a second. */
|
---|
2748 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
---|
2749 | if (symtab_hdr->sh_info == 0)
|
---|
2750 | continue;
|
---|
2751 |
|
---|
2752 | /* We need an array of the local symbols attached to the input bfd. */
|
---|
2753 | local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
|
---|
2754 | if (local_syms == NULL)
|
---|
2755 | {
|
---|
2756 | local_syms = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
---|
2757 | symtab_hdr->sh_info, 0,
|
---|
2758 | NULL, NULL, NULL);
|
---|
2759 | /* Cache them for elf_link_input_bfd. */
|
---|
2760 | symtab_hdr->contents = (unsigned char *) local_syms;
|
---|
2761 | }
|
---|
2762 | if (local_syms == NULL)
|
---|
2763 | return -1;
|
---|
2764 |
|
---|
2765 | all_local_syms[bfd_indx] = local_syms;
|
---|
2766 |
|
---|
2767 | if (info->shared && htab->multi_subspace)
|
---|
2768 | {
|
---|
2769 | struct elf_link_hash_entry **sym_hashes;
|
---|
2770 | struct elf_link_hash_entry **end_hashes;
|
---|
2771 | unsigned int symcount;
|
---|
2772 |
|
---|
2773 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
---|
2774 | - symtab_hdr->sh_info);
|
---|
2775 | sym_hashes = elf_sym_hashes (input_bfd);
|
---|
2776 | end_hashes = sym_hashes + symcount;
|
---|
2777 |
|
---|
2778 | /* Look through the global syms for functions; We need to
|
---|
2779 | build export stubs for all globally visible functions. */
|
---|
2780 | for (; sym_hashes < end_hashes; sym_hashes++)
|
---|
2781 | {
|
---|
2782 | struct elf32_hppa_link_hash_entry *hash;
|
---|
2783 |
|
---|
2784 | hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
|
---|
2785 |
|
---|
2786 | while (hash->elf.root.type == bfd_link_hash_indirect
|
---|
2787 | || hash->elf.root.type == bfd_link_hash_warning)
|
---|
2788 | hash = ((struct elf32_hppa_link_hash_entry *)
|
---|
2789 | hash->elf.root.u.i.link);
|
---|
2790 |
|
---|
2791 | /* At this point in the link, undefined syms have been
|
---|
2792 | resolved, so we need to check that the symbol was
|
---|
2793 | defined in this BFD. */
|
---|
2794 | if ((hash->elf.root.type == bfd_link_hash_defined
|
---|
2795 | || hash->elf.root.type == bfd_link_hash_defweak)
|
---|
2796 | && hash->elf.type == STT_FUNC
|
---|
2797 | && hash->elf.root.u.def.section->output_section != NULL
|
---|
2798 | && (hash->elf.root.u.def.section->output_section->owner
|
---|
2799 | == output_bfd)
|
---|
2800 | && hash->elf.root.u.def.section->owner == input_bfd
|
---|
2801 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
|
---|
2802 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
|
---|
2803 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT)
|
---|
2804 | {
|
---|
2805 | asection *sec;
|
---|
2806 | const char *stub_name;
|
---|
2807 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
2808 |
|
---|
2809 | sec = hash->elf.root.u.def.section;
|
---|
2810 | stub_name = hash->elf.root.root.string;
|
---|
2811 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
|
---|
2812 | stub_name,
|
---|
2813 | FALSE, FALSE);
|
---|
2814 | if (stub_entry == NULL)
|
---|
2815 | {
|
---|
2816 | stub_entry = hppa_add_stub (stub_name, sec, htab);
|
---|
2817 | if (!stub_entry)
|
---|
2818 | return -1;
|
---|
2819 |
|
---|
2820 | stub_entry->target_value = hash->elf.root.u.def.value;
|
---|
2821 | stub_entry->target_section = hash->elf.root.u.def.section;
|
---|
2822 | stub_entry->stub_type = hppa_stub_export;
|
---|
2823 | stub_entry->h = hash;
|
---|
2824 | stub_changed = 1;
|
---|
2825 | }
|
---|
2826 | else
|
---|
2827 | {
|
---|
2828 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"),
|
---|
2829 | bfd_archive_filename (input_bfd),
|
---|
2830 | stub_name);
|
---|
2831 | }
|
---|
2832 | }
|
---|
2833 | }
|
---|
2834 | }
|
---|
2835 | }
|
---|
2836 |
|
---|
2837 | return stub_changed;
|
---|
2838 | }
|
---|
2839 |
|
---|
2840 | /* Determine and set the size of the stub section for a final link.
|
---|
2841 |
|
---|
2842 | The basic idea here is to examine all the relocations looking for
|
---|
2843 | PC-relative calls to a target that is unreachable with a "bl"
|
---|
2844 | instruction. */
|
---|
2845 |
|
---|
2846 | bfd_boolean
|
---|
2847 | elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size,
|
---|
2848 | add_stub_section, layout_sections_again)
|
---|
2849 | bfd *output_bfd;
|
---|
2850 | bfd *stub_bfd;
|
---|
2851 | struct bfd_link_info *info;
|
---|
2852 | bfd_boolean multi_subspace;
|
---|
2853 | bfd_signed_vma group_size;
|
---|
2854 | asection * (*add_stub_section) PARAMS ((const char *, asection *));
|
---|
2855 | void (*layout_sections_again) PARAMS ((void));
|
---|
2856 | {
|
---|
2857 | bfd_size_type stub_group_size;
|
---|
2858 | bfd_boolean stubs_always_before_branch;
|
---|
2859 | bfd_boolean stub_changed;
|
---|
2860 | struct elf32_hppa_link_hash_table *htab = hppa_link_hash_table (info);
|
---|
2861 |
|
---|
2862 | /* Stash our params away. */
|
---|
2863 | htab->stub_bfd = stub_bfd;
|
---|
2864 | htab->multi_subspace = multi_subspace;
|
---|
2865 | htab->add_stub_section = add_stub_section;
|
---|
2866 | htab->layout_sections_again = layout_sections_again;
|
---|
2867 | stubs_always_before_branch = group_size < 0;
|
---|
2868 | if (group_size < 0)
|
---|
2869 | stub_group_size = -group_size;
|
---|
2870 | else
|
---|
2871 | stub_group_size = group_size;
|
---|
2872 | if (stub_group_size == 1)
|
---|
2873 | {
|
---|
2874 | /* Default values. */
|
---|
2875 | if (stubs_always_before_branch)
|
---|
2876 | {
|
---|
2877 | stub_group_size = 7680000;
|
---|
2878 | if (htab->has_17bit_branch || htab->multi_subspace)
|
---|
2879 | stub_group_size = 240000;
|
---|
2880 | if (htab->has_12bit_branch)
|
---|
2881 | stub_group_size = 7500;
|
---|
2882 | }
|
---|
2883 | else
|
---|
2884 | {
|
---|
2885 | stub_group_size = 6971392;
|
---|
2886 | if (htab->has_17bit_branch || htab->multi_subspace)
|
---|
2887 | stub_group_size = 217856;
|
---|
2888 | if (htab->has_12bit_branch)
|
---|
2889 | stub_group_size = 6808;
|
---|
2890 | }
|
---|
2891 | }
|
---|
2892 |
|
---|
2893 | group_sections (htab, stub_group_size, stubs_always_before_branch);
|
---|
2894 |
|
---|
2895 | switch (get_local_syms (output_bfd, info->input_bfds, info))
|
---|
2896 | {
|
---|
2897 | default:
|
---|
2898 | if (htab->all_local_syms)
|
---|
2899 | goto error_ret_free_local;
|
---|
2900 | return FALSE;
|
---|
2901 |
|
---|
2902 | case 0:
|
---|
2903 | stub_changed = FALSE;
|
---|
2904 | break;
|
---|
2905 |
|
---|
2906 | case 1:
|
---|
2907 | stub_changed = TRUE;
|
---|
2908 | break;
|
---|
2909 | }
|
---|
2910 |
|
---|
2911 | while (1)
|
---|
2912 | {
|
---|
2913 | bfd *input_bfd;
|
---|
2914 | unsigned int bfd_indx;
|
---|
2915 | asection *stub_sec;
|
---|
2916 |
|
---|
2917 | for (input_bfd = info->input_bfds, bfd_indx = 0;
|
---|
2918 | input_bfd != NULL;
|
---|
2919 | input_bfd = input_bfd->link_next, bfd_indx++)
|
---|
2920 | {
|
---|
2921 | Elf_Internal_Shdr *symtab_hdr;
|
---|
2922 | asection *section;
|
---|
2923 | Elf_Internal_Sym *local_syms;
|
---|
2924 |
|
---|
2925 | /* We'll need the symbol table in a second. */
|
---|
2926 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
---|
2927 | if (symtab_hdr->sh_info == 0)
|
---|
2928 | continue;
|
---|
2929 |
|
---|
2930 | local_syms = htab->all_local_syms[bfd_indx];
|
---|
2931 |
|
---|
2932 | /* Walk over each section attached to the input bfd. */
|
---|
2933 | for (section = input_bfd->sections;
|
---|
2934 | section != NULL;
|
---|
2935 | section = section->next)
|
---|
2936 | {
|
---|
2937 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
---|
2938 |
|
---|
2939 | /* If there aren't any relocs, then there's nothing more
|
---|
2940 | to do. */
|
---|
2941 | if ((section->flags & SEC_RELOC) == 0
|
---|
2942 | || section->reloc_count == 0)
|
---|
2943 | continue;
|
---|
2944 |
|
---|
2945 | /* If this section is a link-once section that will be
|
---|
2946 | discarded, then don't create any stubs. */
|
---|
2947 | if (section->output_section == NULL
|
---|
2948 | || section->output_section->owner != output_bfd)
|
---|
2949 | continue;
|
---|
2950 |
|
---|
2951 | /* Get the relocs. */
|
---|
2952 | internal_relocs
|
---|
2953 | = _bfd_elf32_link_read_relocs (input_bfd, section, NULL,
|
---|
2954 | (Elf_Internal_Rela *) NULL,
|
---|
2955 | info->keep_memory);
|
---|
2956 | if (internal_relocs == NULL)
|
---|
2957 | goto error_ret_free_local;
|
---|
2958 |
|
---|
2959 | /* Now examine each relocation. */
|
---|
2960 | irela = internal_relocs;
|
---|
2961 | irelaend = irela + section->reloc_count;
|
---|
2962 | for (; irela < irelaend; irela++)
|
---|
2963 | {
|
---|
2964 | unsigned int r_type, r_indx;
|
---|
2965 | enum elf32_hppa_stub_type stub_type;
|
---|
2966 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
2967 | asection *sym_sec;
|
---|
2968 | bfd_vma sym_value;
|
---|
2969 | bfd_vma destination;
|
---|
2970 | struct elf32_hppa_link_hash_entry *hash;
|
---|
2971 | char *stub_name;
|
---|
2972 | const asection *id_sec;
|
---|
2973 |
|
---|
2974 | r_type = ELF32_R_TYPE (irela->r_info);
|
---|
2975 | r_indx = ELF32_R_SYM (irela->r_info);
|
---|
2976 |
|
---|
2977 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
|
---|
2978 | {
|
---|
2979 | bfd_set_error (bfd_error_bad_value);
|
---|
2980 | error_ret_free_internal:
|
---|
2981 | if (elf_section_data (section)->relocs == NULL)
|
---|
2982 | free (internal_relocs);
|
---|
2983 | goto error_ret_free_local;
|
---|
2984 | }
|
---|
2985 |
|
---|
2986 | /* Only look for stubs on call instructions. */
|
---|
2987 | if (r_type != (unsigned int) R_PARISC_PCREL12F
|
---|
2988 | && r_type != (unsigned int) R_PARISC_PCREL17F
|
---|
2989 | && r_type != (unsigned int) R_PARISC_PCREL22F)
|
---|
2990 | continue;
|
---|
2991 |
|
---|
2992 | /* Now determine the call target, its name, value,
|
---|
2993 | section. */
|
---|
2994 | sym_sec = NULL;
|
---|
2995 | sym_value = 0;
|
---|
2996 | destination = 0;
|
---|
2997 | hash = NULL;
|
---|
2998 | if (r_indx < symtab_hdr->sh_info)
|
---|
2999 | {
|
---|
3000 | /* It's a local symbol. */
|
---|
3001 | Elf_Internal_Sym *sym;
|
---|
3002 | Elf_Internal_Shdr *hdr;
|
---|
3003 |
|
---|
3004 | sym = local_syms + r_indx;
|
---|
3005 | hdr = elf_elfsections (input_bfd)[sym->st_shndx];
|
---|
3006 | sym_sec = hdr->bfd_section;
|
---|
3007 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
---|
3008 | sym_value = sym->st_value;
|
---|
3009 | destination = (sym_value + irela->r_addend
|
---|
3010 | + sym_sec->output_offset
|
---|
3011 | + sym_sec->output_section->vma);
|
---|
3012 | }
|
---|
3013 | else
|
---|
3014 | {
|
---|
3015 | /* It's an external symbol. */
|
---|
3016 | int e_indx;
|
---|
3017 |
|
---|
3018 | e_indx = r_indx - symtab_hdr->sh_info;
|
---|
3019 | hash = ((struct elf32_hppa_link_hash_entry *)
|
---|
3020 | elf_sym_hashes (input_bfd)[e_indx]);
|
---|
3021 |
|
---|
3022 | while (hash->elf.root.type == bfd_link_hash_indirect
|
---|
3023 | || hash->elf.root.type == bfd_link_hash_warning)
|
---|
3024 | hash = ((struct elf32_hppa_link_hash_entry *)
|
---|
3025 | hash->elf.root.u.i.link);
|
---|
3026 |
|
---|
3027 | if (hash->elf.root.type == bfd_link_hash_defined
|
---|
3028 | || hash->elf.root.type == bfd_link_hash_defweak)
|
---|
3029 | {
|
---|
3030 | sym_sec = hash->elf.root.u.def.section;
|
---|
3031 | sym_value = hash->elf.root.u.def.value;
|
---|
3032 | if (sym_sec->output_section != NULL)
|
---|
3033 | destination = (sym_value + irela->r_addend
|
---|
3034 | + sym_sec->output_offset
|
---|
3035 | + sym_sec->output_section->vma);
|
---|
3036 | }
|
---|
3037 | else if (hash->elf.root.type == bfd_link_hash_undefweak)
|
---|
3038 | {
|
---|
3039 | if (! info->shared)
|
---|
3040 | continue;
|
---|
3041 | }
|
---|
3042 | else if (hash->elf.root.type == bfd_link_hash_undefined)
|
---|
3043 | {
|
---|
3044 | if (! (info->shared
|
---|
3045 | && !info->no_undefined
|
---|
3046 | && (ELF_ST_VISIBILITY (hash->elf.other)
|
---|
3047 | == STV_DEFAULT)
|
---|
3048 | && hash->elf.type != STT_PARISC_MILLI))
|
---|
3049 | continue;
|
---|
3050 | }
|
---|
3051 | else
|
---|
3052 | {
|
---|
3053 | bfd_set_error (bfd_error_bad_value);
|
---|
3054 | goto error_ret_free_internal;
|
---|
3055 | }
|
---|
3056 | }
|
---|
3057 |
|
---|
3058 | /* Determine what (if any) linker stub is needed. */
|
---|
3059 | stub_type = hppa_type_of_stub (section, irela, hash,
|
---|
3060 | destination);
|
---|
3061 | if (stub_type == hppa_stub_none)
|
---|
3062 | continue;
|
---|
3063 |
|
---|
3064 | /* Support for grouping stub sections. */
|
---|
3065 | id_sec = htab->stub_group[section->id].link_sec;
|
---|
3066 |
|
---|
3067 | /* Get the name of this stub. */
|
---|
3068 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
|
---|
3069 | if (!stub_name)
|
---|
3070 | goto error_ret_free_internal;
|
---|
3071 |
|
---|
3072 | stub_entry = hppa_stub_hash_lookup (&htab->stub_hash_table,
|
---|
3073 | stub_name,
|
---|
3074 | FALSE, FALSE);
|
---|
3075 | if (stub_entry != NULL)
|
---|
3076 | {
|
---|
3077 | /* The proper stub has already been created. */
|
---|
3078 | free (stub_name);
|
---|
3079 | continue;
|
---|
3080 | }
|
---|
3081 |
|
---|
3082 | stub_entry = hppa_add_stub (stub_name, section, htab);
|
---|
3083 | if (stub_entry == NULL)
|
---|
3084 | {
|
---|
3085 | free (stub_name);
|
---|
3086 | goto error_ret_free_internal;
|
---|
3087 | }
|
---|
3088 |
|
---|
3089 | stub_entry->target_value = sym_value;
|
---|
3090 | stub_entry->target_section = sym_sec;
|
---|
3091 | stub_entry->stub_type = stub_type;
|
---|
3092 | if (info->shared)
|
---|
3093 | {
|
---|
3094 | if (stub_type == hppa_stub_import)
|
---|
3095 | stub_entry->stub_type = hppa_stub_import_shared;
|
---|
3096 | else if (stub_type == hppa_stub_long_branch)
|
---|
3097 | stub_entry->stub_type = hppa_stub_long_branch_shared;
|
---|
3098 | }
|
---|
3099 | stub_entry->h = hash;
|
---|
3100 | stub_changed = TRUE;
|
---|
3101 | }
|
---|
3102 |
|
---|
3103 | /* We're done with the internal relocs, free them. */
|
---|
3104 | if (elf_section_data (section)->relocs == NULL)
|
---|
3105 | free (internal_relocs);
|
---|
3106 | }
|
---|
3107 | }
|
---|
3108 |
|
---|
3109 | if (!stub_changed)
|
---|
3110 | break;
|
---|
3111 |
|
---|
3112 | /* OK, we've added some stubs. Find out the new size of the
|
---|
3113 | stub sections. */
|
---|
3114 | for (stub_sec = htab->stub_bfd->sections;
|
---|
3115 | stub_sec != NULL;
|
---|
3116 | stub_sec = stub_sec->next)
|
---|
3117 | {
|
---|
3118 | stub_sec->_raw_size = 0;
|
---|
3119 | stub_sec->_cooked_size = 0;
|
---|
3120 | }
|
---|
3121 |
|
---|
3122 | bfd_hash_traverse (&htab->stub_hash_table, hppa_size_one_stub, htab);
|
---|
3123 |
|
---|
3124 | /* Ask the linker to do its stuff. */
|
---|
3125 | (*htab->layout_sections_again) ();
|
---|
3126 | stub_changed = FALSE;
|
---|
3127 | }
|
---|
3128 |
|
---|
3129 | free (htab->all_local_syms);
|
---|
3130 | return TRUE;
|
---|
3131 |
|
---|
3132 | error_ret_free_local:
|
---|
3133 | free (htab->all_local_syms);
|
---|
3134 | return FALSE;
|
---|
3135 | }
|
---|
3136 |
|
---|
3137 | /* For a final link, this function is called after we have sized the
|
---|
3138 | stubs to provide a value for __gp. */
|
---|
3139 |
|
---|
3140 | bfd_boolean
|
---|
3141 | elf32_hppa_set_gp (abfd, info)
|
---|
3142 | bfd *abfd;
|
---|
3143 | struct bfd_link_info *info;
|
---|
3144 | {
|
---|
3145 | struct bfd_link_hash_entry *h;
|
---|
3146 | asection *sec = NULL;
|
---|
3147 | bfd_vma gp_val = 0;
|
---|
3148 | struct elf32_hppa_link_hash_table *htab;
|
---|
3149 |
|
---|
3150 | htab = hppa_link_hash_table (info);
|
---|
3151 | h = bfd_link_hash_lookup (&htab->elf.root, "$global$", FALSE, FALSE, FALSE);
|
---|
3152 |
|
---|
3153 | if (h != NULL
|
---|
3154 | && (h->type == bfd_link_hash_defined
|
---|
3155 | || h->type == bfd_link_hash_defweak))
|
---|
3156 | {
|
---|
3157 | gp_val = h->u.def.value;
|
---|
3158 | sec = h->u.def.section;
|
---|
3159 | }
|
---|
3160 | else
|
---|
3161 | {
|
---|
3162 | asection *splt;
|
---|
3163 | asection *sgot;
|
---|
3164 |
|
---|
3165 | if (htab->elf.root.creator->flavour == bfd_target_elf_flavour)
|
---|
3166 | {
|
---|
3167 | splt = htab->splt;
|
---|
3168 | sgot = htab->sgot;
|
---|
3169 | }
|
---|
3170 | else
|
---|
3171 | {
|
---|
3172 | /* If we're not elf, look up the output sections in the
|
---|
3173 | hope we may actually find them. */
|
---|
3174 | splt = bfd_get_section_by_name (abfd, ".plt");
|
---|
3175 | sgot = bfd_get_section_by_name (abfd, ".got");
|
---|
3176 | }
|
---|
3177 |
|
---|
3178 | /* Choose to point our LTP at, in this order, one of .plt, .got,
|
---|
3179 | or .data, if these sections exist. In the case of choosing
|
---|
3180 | .plt try to make the LTP ideal for addressing anywhere in the
|
---|
3181 | .plt or .got with a 14 bit signed offset. Typically, the end
|
---|
3182 | of the .plt is the start of the .got, so choose .plt + 0x2000
|
---|
3183 | if either the .plt or .got is larger than 0x2000. If both
|
---|
3184 | the .plt and .got are smaller than 0x2000, choose the end of
|
---|
3185 | the .plt section. */
|
---|
3186 | sec = splt;
|
---|
3187 | if (sec != NULL)
|
---|
3188 | {
|
---|
3189 | gp_val = sec->_raw_size;
|
---|
3190 | if (gp_val > 0x2000 || (sgot && sgot->_raw_size > 0x2000))
|
---|
3191 | {
|
---|
3192 | gp_val = 0x2000;
|
---|
3193 | }
|
---|
3194 | }
|
---|
3195 | else
|
---|
3196 | {
|
---|
3197 | sec = sgot;
|
---|
3198 | if (sec != NULL)
|
---|
3199 | {
|
---|
3200 | /* We know we don't have a .plt. If .got is large,
|
---|
3201 | offset our LTP. */
|
---|
3202 | if (sec->_raw_size > 0x2000)
|
---|
3203 | gp_val = 0x2000;
|
---|
3204 | }
|
---|
3205 | else
|
---|
3206 | {
|
---|
3207 | /* No .plt or .got. Who cares what the LTP is? */
|
---|
3208 | sec = bfd_get_section_by_name (abfd, ".data");
|
---|
3209 | }
|
---|
3210 | }
|
---|
3211 |
|
---|
3212 | if (h != NULL)
|
---|
3213 | {
|
---|
3214 | h->type = bfd_link_hash_defined;
|
---|
3215 | h->u.def.value = gp_val;
|
---|
3216 | if (sec != NULL)
|
---|
3217 | h->u.def.section = sec;
|
---|
3218 | else
|
---|
3219 | h->u.def.section = bfd_abs_section_ptr;
|
---|
3220 | }
|
---|
3221 | }
|
---|
3222 |
|
---|
3223 | if (sec != NULL && sec->output_section != NULL)
|
---|
3224 | gp_val += sec->output_section->vma + sec->output_offset;
|
---|
3225 |
|
---|
3226 | elf_gp (abfd) = gp_val;
|
---|
3227 | return TRUE;
|
---|
3228 | }
|
---|
3229 |
|
---|
3230 | /* Build all the stubs associated with the current output file. The
|
---|
3231 | stubs are kept in a hash table attached to the main linker hash
|
---|
3232 | table. We also set up the .plt entries for statically linked PIC
|
---|
3233 | functions here. This function is called via hppaelf_finish in the
|
---|
3234 | linker. */
|
---|
3235 |
|
---|
3236 | bfd_boolean
|
---|
3237 | elf32_hppa_build_stubs (info)
|
---|
3238 | struct bfd_link_info *info;
|
---|
3239 | {
|
---|
3240 | asection *stub_sec;
|
---|
3241 | struct bfd_hash_table *table;
|
---|
3242 | struct elf32_hppa_link_hash_table *htab;
|
---|
3243 |
|
---|
3244 | htab = hppa_link_hash_table (info);
|
---|
3245 |
|
---|
3246 | for (stub_sec = htab->stub_bfd->sections;
|
---|
3247 | stub_sec != NULL;
|
---|
3248 | stub_sec = stub_sec->next)
|
---|
3249 | {
|
---|
3250 | bfd_size_type size;
|
---|
3251 |
|
---|
3252 | /* Allocate memory to hold the linker stubs. */
|
---|
3253 | size = stub_sec->_raw_size;
|
---|
3254 | stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size);
|
---|
3255 | if (stub_sec->contents == NULL && size != 0)
|
---|
3256 | return FALSE;
|
---|
3257 | stub_sec->_raw_size = 0;
|
---|
3258 | }
|
---|
3259 |
|
---|
3260 | /* Build the stubs as directed by the stub hash table. */
|
---|
3261 | table = &htab->stub_hash_table;
|
---|
3262 | bfd_hash_traverse (table, hppa_build_one_stub, info);
|
---|
3263 |
|
---|
3264 | return TRUE;
|
---|
3265 | }
|
---|
3266 |
|
---|
3267 | /* Perform a final link. */
|
---|
3268 |
|
---|
3269 | static bfd_boolean
|
---|
3270 | elf32_hppa_final_link (abfd, info)
|
---|
3271 | bfd *abfd;
|
---|
3272 | struct bfd_link_info *info;
|
---|
3273 | {
|
---|
3274 | /* Invoke the regular ELF linker to do all the work. */
|
---|
3275 | if (!bfd_elf32_bfd_final_link (abfd, info))
|
---|
3276 | return FALSE;
|
---|
3277 |
|
---|
3278 | /* If we're producing a final executable, sort the contents of the
|
---|
3279 | unwind section. */
|
---|
3280 | return elf_hppa_sort_unwind (abfd);
|
---|
3281 | }
|
---|
3282 |
|
---|
3283 | /* Record the lowest address for the data and text segments. */
|
---|
3284 |
|
---|
3285 | static void
|
---|
3286 | hppa_record_segment_addr (abfd, section, data)
|
---|
3287 | bfd *abfd ATTRIBUTE_UNUSED;
|
---|
3288 | asection *section;
|
---|
3289 | PTR data;
|
---|
3290 | {
|
---|
3291 | struct elf32_hppa_link_hash_table *htab;
|
---|
3292 |
|
---|
3293 | htab = (struct elf32_hppa_link_hash_table *) data;
|
---|
3294 |
|
---|
3295 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
|
---|
3296 | {
|
---|
3297 | bfd_vma value = section->vma - section->filepos;
|
---|
3298 |
|
---|
3299 | if ((section->flags & SEC_READONLY) != 0)
|
---|
3300 | {
|
---|
3301 | if (value < htab->text_segment_base)
|
---|
3302 | htab->text_segment_base = value;
|
---|
3303 | }
|
---|
3304 | else
|
---|
3305 | {
|
---|
3306 | if (value < htab->data_segment_base)
|
---|
3307 | htab->data_segment_base = value;
|
---|
3308 | }
|
---|
3309 | }
|
---|
3310 | }
|
---|
3311 |
|
---|
3312 | /* Perform a relocation as part of a final link. */
|
---|
3313 |
|
---|
3314 | static bfd_reloc_status_type
|
---|
3315 | final_link_relocate (input_section, contents, rel, value, htab, sym_sec, h)
|
---|
3316 | asection *input_section;
|
---|
3317 | bfd_byte *contents;
|
---|
3318 | const Elf_Internal_Rela *rel;
|
---|
3319 | bfd_vma value;
|
---|
3320 | struct elf32_hppa_link_hash_table *htab;
|
---|
3321 | asection *sym_sec;
|
---|
3322 | struct elf32_hppa_link_hash_entry *h;
|
---|
3323 | {
|
---|
3324 | int insn;
|
---|
3325 | unsigned int r_type = ELF32_R_TYPE (rel->r_info);
|
---|
3326 | reloc_howto_type *howto = elf_hppa_howto_table + r_type;
|
---|
3327 | int r_format = howto->bitsize;
|
---|
3328 | enum hppa_reloc_field_selector_type_alt r_field;
|
---|
3329 | bfd *input_bfd = input_section->owner;
|
---|
3330 | bfd_vma offset = rel->r_offset;
|
---|
3331 | bfd_vma max_branch_offset = 0;
|
---|
3332 | bfd_byte *hit_data = contents + offset;
|
---|
3333 | bfd_signed_vma addend = rel->r_addend;
|
---|
3334 | bfd_vma location;
|
---|
3335 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL;
|
---|
3336 | int val;
|
---|
3337 |
|
---|
3338 | if (r_type == R_PARISC_NONE)
|
---|
3339 | return bfd_reloc_ok;
|
---|
3340 |
|
---|
3341 | insn = bfd_get_32 (input_bfd, hit_data);
|
---|
3342 |
|
---|
3343 | /* Find out where we are and where we're going. */
|
---|
3344 | location = (offset +
|
---|
3345 | input_section->output_offset +
|
---|
3346 | input_section->output_section->vma);
|
---|
3347 |
|
---|
3348 | switch (r_type)
|
---|
3349 | {
|
---|
3350 | case R_PARISC_PCREL12F:
|
---|
3351 | case R_PARISC_PCREL17F:
|
---|
3352 | case R_PARISC_PCREL22F:
|
---|
3353 | /* If this call should go via the plt, find the import stub in
|
---|
3354 | the stub hash. */
|
---|
3355 | if (sym_sec == NULL
|
---|
3356 | || sym_sec->output_section == NULL
|
---|
3357 | || (h != NULL
|
---|
3358 | && h->elf.plt.offset != (bfd_vma) -1
|
---|
3359 | && (h->elf.dynindx != -1 || h->pic_call)
|
---|
3360 | && !h->plabel))
|
---|
3361 | {
|
---|
3362 | stub_entry = hppa_get_stub_entry (input_section, sym_sec,
|
---|
3363 | h, rel, htab);
|
---|
3364 | if (stub_entry != NULL)
|
---|
3365 | {
|
---|
3366 | value = (stub_entry->stub_offset
|
---|
3367 | + stub_entry->stub_sec->output_offset
|
---|
3368 | + stub_entry->stub_sec->output_section->vma);
|
---|
3369 | addend = 0;
|
---|
3370 | }
|
---|
3371 | else if (sym_sec == NULL && h != NULL
|
---|
3372 | && h->elf.root.type == bfd_link_hash_undefweak)
|
---|
3373 | {
|
---|
3374 | /* It's OK if undefined weak. Calls to undefined weak
|
---|
3375 | symbols behave as if the "called" function
|
---|
3376 | immediately returns. We can thus call to a weak
|
---|
3377 | function without first checking whether the function
|
---|
3378 | is defined. */
|
---|
3379 | value = location;
|
---|
3380 | addend = 8;
|
---|
3381 | }
|
---|
3382 | else
|
---|
3383 | return bfd_reloc_undefined;
|
---|
3384 | }
|
---|
3385 | /* Fall thru. */
|
---|
3386 |
|
---|
3387 | case R_PARISC_PCREL21L:
|
---|
3388 | case R_PARISC_PCREL17C:
|
---|
3389 | case R_PARISC_PCREL17R:
|
---|
3390 | case R_PARISC_PCREL14R:
|
---|
3391 | case R_PARISC_PCREL14F:
|
---|
3392 | /* Make it a pc relative offset. */
|
---|
3393 | value -= location;
|
---|
3394 | addend -= 8;
|
---|
3395 | break;
|
---|
3396 |
|
---|
3397 | case R_PARISC_DPREL21L:
|
---|
3398 | case R_PARISC_DPREL14R:
|
---|
3399 | case R_PARISC_DPREL14F:
|
---|
3400 | /* For all the DP relative relocations, we need to examine the symbol's
|
---|
3401 | section. If it has no section or if it's a code section, then
|
---|
3402 | "data pointer relative" makes no sense. In that case we don't
|
---|
3403 | adjust the "value", and for 21 bit addil instructions, we change the
|
---|
3404 | source addend register from %dp to %r0. This situation commonly
|
---|
3405 | arises for undefined weak symbols and when a variable's "constness"
|
---|
3406 | is declared differently from the way the variable is defined. For
|
---|
3407 | instance: "extern int foo" with foo defined as "const int foo". */
|
---|
3408 | if (sym_sec == NULL || (sym_sec->flags & SEC_CODE) != 0)
|
---|
3409 | {
|
---|
3410 | if ((insn & ((0x3f << 26) | (0x1f << 21)))
|
---|
3411 | == (((int) OP_ADDIL << 26) | (27 << 21)))
|
---|
3412 | {
|
---|
3413 | insn &= ~ (0x1f << 21);
|
---|
3414 | #if 0 /* debug them. */
|
---|
3415 | (*_bfd_error_handler)
|
---|
3416 | (_("%s(%s+0x%lx): fixing %s"),
|
---|
3417 | bfd_archive_filename (input_bfd),
|
---|
3418 | input_section->name,
|
---|
3419 | (long) rel->r_offset,
|
---|
3420 | howto->name);
|
---|
3421 | #endif
|
---|
3422 | }
|
---|
3423 | /* Now try to make things easy for the dynamic linker. */
|
---|
3424 |
|
---|
3425 | break;
|
---|
3426 | }
|
---|
3427 | /* Fall thru. */
|
---|
3428 |
|
---|
3429 | case R_PARISC_DLTIND21L:
|
---|
3430 | case R_PARISC_DLTIND14R:
|
---|
3431 | case R_PARISC_DLTIND14F:
|
---|
3432 | value -= elf_gp (input_section->output_section->owner);
|
---|
3433 | break;
|
---|
3434 |
|
---|
3435 | case R_PARISC_SEGREL32:
|
---|
3436 | if ((sym_sec->flags & SEC_CODE) != 0)
|
---|
3437 | value -= htab->text_segment_base;
|
---|
3438 | else
|
---|
3439 | value -= htab->data_segment_base;
|
---|
3440 | break;
|
---|
3441 |
|
---|
3442 | default:
|
---|
3443 | break;
|
---|
3444 | }
|
---|
3445 |
|
---|
3446 | switch (r_type)
|
---|
3447 | {
|
---|
3448 | case R_PARISC_DIR32:
|
---|
3449 | case R_PARISC_DIR14F:
|
---|
3450 | case R_PARISC_DIR17F:
|
---|
3451 | case R_PARISC_PCREL17C:
|
---|
3452 | case R_PARISC_PCREL14F:
|
---|
3453 | case R_PARISC_DPREL14F:
|
---|
3454 | case R_PARISC_PLABEL32:
|
---|
3455 | case R_PARISC_DLTIND14F:
|
---|
3456 | case R_PARISC_SEGBASE:
|
---|
3457 | case R_PARISC_SEGREL32:
|
---|
3458 | r_field = e_fsel;
|
---|
3459 | break;
|
---|
3460 |
|
---|
3461 | case R_PARISC_DLTIND21L:
|
---|
3462 | case R_PARISC_PCREL21L:
|
---|
3463 | case R_PARISC_PLABEL21L:
|
---|
3464 | r_field = e_lsel;
|
---|
3465 | break;
|
---|
3466 |
|
---|
3467 | case R_PARISC_DIR21L:
|
---|
3468 | case R_PARISC_DPREL21L:
|
---|
3469 | r_field = e_lrsel;
|
---|
3470 | break;
|
---|
3471 |
|
---|
3472 | case R_PARISC_PCREL17R:
|
---|
3473 | case R_PARISC_PCREL14R:
|
---|
3474 | case R_PARISC_PLABEL14R:
|
---|
3475 | case R_PARISC_DLTIND14R:
|
---|
3476 | r_field = e_rsel;
|
---|
3477 | break;
|
---|
3478 |
|
---|
3479 | case R_PARISC_DIR17R:
|
---|
3480 | case R_PARISC_DIR14R:
|
---|
3481 | case R_PARISC_DPREL14R:
|
---|
3482 | r_field = e_rrsel;
|
---|
3483 | break;
|
---|
3484 |
|
---|
3485 | case R_PARISC_PCREL12F:
|
---|
3486 | case R_PARISC_PCREL17F:
|
---|
3487 | case R_PARISC_PCREL22F:
|
---|
3488 | r_field = e_fsel;
|
---|
3489 |
|
---|
3490 | if (r_type == (unsigned int) R_PARISC_PCREL17F)
|
---|
3491 | {
|
---|
3492 | max_branch_offset = (1 << (17-1)) << 2;
|
---|
3493 | }
|
---|
3494 | else if (r_type == (unsigned int) R_PARISC_PCREL12F)
|
---|
3495 | {
|
---|
3496 | max_branch_offset = (1 << (12-1)) << 2;
|
---|
3497 | }
|
---|
3498 | else
|
---|
3499 | {
|
---|
3500 | max_branch_offset = (1 << (22-1)) << 2;
|
---|
3501 | }
|
---|
3502 |
|
---|
3503 | /* sym_sec is NULL on undefined weak syms or when shared on
|
---|
3504 | undefined syms. We've already checked for a stub for the
|
---|
3505 | shared undefined case. */
|
---|
3506 | if (sym_sec == NULL)
|
---|
3507 | break;
|
---|
3508 |
|
---|
3509 | /* If the branch is out of reach, then redirect the
|
---|
3510 | call to the local stub for this function. */
|
---|
3511 | if (value + addend + max_branch_offset >= 2*max_branch_offset)
|
---|
3512 | {
|
---|
3513 | stub_entry = hppa_get_stub_entry (input_section, sym_sec,
|
---|
3514 | h, rel, htab);
|
---|
3515 | if (stub_entry == NULL)
|
---|
3516 | return bfd_reloc_undefined;
|
---|
3517 |
|
---|
3518 | /* Munge up the value and addend so that we call the stub
|
---|
3519 | rather than the procedure directly. */
|
---|
3520 | value = (stub_entry->stub_offset
|
---|
3521 | + stub_entry->stub_sec->output_offset
|
---|
3522 | + stub_entry->stub_sec->output_section->vma
|
---|
3523 | - location);
|
---|
3524 | addend = -8;
|
---|
3525 | }
|
---|
3526 | break;
|
---|
3527 |
|
---|
3528 | /* Something we don't know how to handle. */
|
---|
3529 | default:
|
---|
3530 | return bfd_reloc_notsupported;
|
---|
3531 | }
|
---|
3532 |
|
---|
3533 | /* Make sure we can reach the stub. */
|
---|
3534 | if (max_branch_offset != 0
|
---|
3535 | && value + addend + max_branch_offset >= 2*max_branch_offset)
|
---|
3536 | {
|
---|
3537 | (*_bfd_error_handler)
|
---|
3538 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
|
---|
3539 | bfd_archive_filename (input_bfd),
|
---|
3540 | input_section->name,
|
---|
3541 | (long) rel->r_offset,
|
---|
3542 | stub_entry->root.string);
|
---|
3543 | bfd_set_error (bfd_error_bad_value);
|
---|
3544 | return bfd_reloc_notsupported;
|
---|
3545 | }
|
---|
3546 |
|
---|
3547 | val = hppa_field_adjust (value, addend, r_field);
|
---|
3548 |
|
---|
3549 | switch (r_type)
|
---|
3550 | {
|
---|
3551 | case R_PARISC_PCREL12F:
|
---|
3552 | case R_PARISC_PCREL17C:
|
---|
3553 | case R_PARISC_PCREL17F:
|
---|
3554 | case R_PARISC_PCREL17R:
|
---|
3555 | case R_PARISC_PCREL22F:
|
---|
3556 | case R_PARISC_DIR17F:
|
---|
3557 | case R_PARISC_DIR17R:
|
---|
3558 | /* This is a branch. Divide the offset by four.
|
---|
3559 | Note that we need to decide whether it's a branch or
|
---|
3560 | otherwise by inspecting the reloc. Inspecting insn won't
|
---|
3561 | work as insn might be from a .word directive. */
|
---|
3562 | val >>= 2;
|
---|
3563 | break;
|
---|
3564 |
|
---|
3565 | default:
|
---|
3566 | break;
|
---|
3567 | }
|
---|
3568 |
|
---|
3569 | insn = hppa_rebuild_insn (insn, val, r_format);
|
---|
3570 |
|
---|
3571 | /* Update the instruction word. */
|
---|
3572 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
|
---|
3573 | return bfd_reloc_ok;
|
---|
3574 | }
|
---|
3575 |
|
---|
3576 | /* Relocate an HPPA ELF section. */
|
---|
3577 |
|
---|
3578 | static bfd_boolean
|
---|
3579 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
|
---|
3580 | contents, relocs, local_syms, local_sections)
|
---|
3581 | bfd *output_bfd;
|
---|
3582 | struct bfd_link_info *info;
|
---|
3583 | bfd *input_bfd;
|
---|
3584 | asection *input_section;
|
---|
3585 | bfd_byte *contents;
|
---|
3586 | Elf_Internal_Rela *relocs;
|
---|
3587 | Elf_Internal_Sym *local_syms;
|
---|
3588 | asection **local_sections;
|
---|
3589 | {
|
---|
3590 | bfd_vma *local_got_offsets;
|
---|
3591 | struct elf32_hppa_link_hash_table *htab;
|
---|
3592 | Elf_Internal_Shdr *symtab_hdr;
|
---|
3593 | Elf_Internal_Rela *rel;
|
---|
3594 | Elf_Internal_Rela *relend;
|
---|
3595 |
|
---|
3596 | if (info->relocateable)
|
---|
3597 | return TRUE;
|
---|
3598 |
|
---|
3599 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
---|
3600 |
|
---|
3601 | htab = hppa_link_hash_table (info);
|
---|
3602 | local_got_offsets = elf_local_got_offsets (input_bfd);
|
---|
3603 |
|
---|
3604 | rel = relocs;
|
---|
3605 | relend = relocs + input_section->reloc_count;
|
---|
3606 | for (; rel < relend; rel++)
|
---|
3607 | {
|
---|
3608 | unsigned int r_type;
|
---|
3609 | reloc_howto_type *howto;
|
---|
3610 | unsigned int r_symndx;
|
---|
3611 | struct elf32_hppa_link_hash_entry *h;
|
---|
3612 | Elf_Internal_Sym *sym;
|
---|
3613 | asection *sym_sec;
|
---|
3614 | bfd_vma relocation;
|
---|
3615 | bfd_reloc_status_type r;
|
---|
3616 | const char *sym_name;
|
---|
3617 | bfd_boolean plabel;
|
---|
3618 | bfd_boolean warned_undef;
|
---|
3619 |
|
---|
3620 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
3621 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
|
---|
3622 | {
|
---|
3623 | bfd_set_error (bfd_error_bad_value);
|
---|
3624 | return FALSE;
|
---|
3625 | }
|
---|
3626 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
|
---|
3627 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
|
---|
3628 | continue;
|
---|
3629 |
|
---|
3630 | /* This is a final link. */
|
---|
3631 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
3632 | h = NULL;
|
---|
3633 | sym = NULL;
|
---|
3634 | sym_sec = NULL;
|
---|
3635 | warned_undef = FALSE;
|
---|
3636 | if (r_symndx < symtab_hdr->sh_info)
|
---|
3637 | {
|
---|
3638 | /* This is a local symbol, h defaults to NULL. */
|
---|
3639 | sym = local_syms + r_symndx;
|
---|
3640 | sym_sec = local_sections[r_symndx];
|
---|
3641 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sym_sec, rel);
|
---|
3642 | }
|
---|
3643 | else
|
---|
3644 | {
|
---|
3645 | int indx;
|
---|
3646 |
|
---|
3647 | /* It's a global; Find its entry in the link hash. */
|
---|
3648 | indx = r_symndx - symtab_hdr->sh_info;
|
---|
3649 | h = ((struct elf32_hppa_link_hash_entry *)
|
---|
3650 | elf_sym_hashes (input_bfd)[indx]);
|
---|
3651 | while (h->elf.root.type == bfd_link_hash_indirect
|
---|
3652 | || h->elf.root.type == bfd_link_hash_warning)
|
---|
3653 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link;
|
---|
3654 |
|
---|
3655 | relocation = 0;
|
---|
3656 | if (h->elf.root.type == bfd_link_hash_defined
|
---|
3657 | || h->elf.root.type == bfd_link_hash_defweak)
|
---|
3658 | {
|
---|
3659 | sym_sec = h->elf.root.u.def.section;
|
---|
3660 | /* If sym_sec->output_section is NULL, then it's a
|
---|
3661 | symbol defined in a shared library. */
|
---|
3662 | if (sym_sec->output_section != NULL)
|
---|
3663 | relocation = (h->elf.root.u.def.value
|
---|
3664 | + sym_sec->output_offset
|
---|
3665 | + sym_sec->output_section->vma);
|
---|
3666 | }
|
---|
3667 | else if (h->elf.root.type == bfd_link_hash_undefweak)
|
---|
3668 | ;
|
---|
3669 | else if (info->shared
|
---|
3670 | && !info->no_undefined
|
---|
3671 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
|
---|
3672 | && h->elf.type != STT_PARISC_MILLI)
|
---|
3673 | ;
|
---|
3674 | else
|
---|
3675 | {
|
---|
3676 | if (!((*info->callbacks->undefined_symbol)
|
---|
3677 | (info, h->elf.root.root.string, input_bfd,
|
---|
3678 | input_section, rel->r_offset, TRUE)))
|
---|
3679 | return FALSE;
|
---|
3680 | warned_undef = TRUE;
|
---|
3681 | }
|
---|
3682 | }
|
---|
3683 |
|
---|
3684 | /* Do any required modifications to the relocation value, and
|
---|
3685 | determine what types of dynamic info we need to output, if
|
---|
3686 | any. */
|
---|
3687 | plabel = 0;
|
---|
3688 | switch (r_type)
|
---|
3689 | {
|
---|
3690 | case R_PARISC_DLTIND14F:
|
---|
3691 | case R_PARISC_DLTIND14R:
|
---|
3692 | case R_PARISC_DLTIND21L:
|
---|
3693 | {
|
---|
3694 | bfd_vma off;
|
---|
3695 | bfd_boolean do_got = 0;
|
---|
3696 |
|
---|
3697 | /* Relocation is to the entry for this symbol in the
|
---|
3698 | global offset table. */
|
---|
3699 | if (h != NULL)
|
---|
3700 | {
|
---|
3701 | bfd_boolean dyn;
|
---|
3702 |
|
---|
3703 | off = h->elf.got.offset;
|
---|
3704 | dyn = htab->elf.dynamic_sections_created;
|
---|
3705 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf))
|
---|
3706 | {
|
---|
3707 | /* If we aren't going to call finish_dynamic_symbol,
|
---|
3708 | then we need to handle initialisation of the .got
|
---|
3709 | entry and create needed relocs here. Since the
|
---|
3710 | offset must always be a multiple of 4, we use the
|
---|
3711 | least significant bit to record whether we have
|
---|
3712 | initialised it already. */
|
---|
3713 | if ((off & 1) != 0)
|
---|
3714 | off &= ~1;
|
---|
3715 | else
|
---|
3716 | {
|
---|
3717 | h->elf.got.offset |= 1;
|
---|
3718 | do_got = 1;
|
---|
3719 | }
|
---|
3720 | }
|
---|
3721 | }
|
---|
3722 | else
|
---|
3723 | {
|
---|
3724 | /* Local symbol case. */
|
---|
3725 | if (local_got_offsets == NULL)
|
---|
3726 | abort ();
|
---|
3727 |
|
---|
3728 | off = local_got_offsets[r_symndx];
|
---|
3729 |
|
---|
3730 | /* The offset must always be a multiple of 4. We use
|
---|
3731 | the least significant bit to record whether we have
|
---|
3732 | already generated the necessary reloc. */
|
---|
3733 | if ((off & 1) != 0)
|
---|
3734 | off &= ~1;
|
---|
3735 | else
|
---|
3736 | {
|
---|
3737 | local_got_offsets[r_symndx] |= 1;
|
---|
3738 | do_got = 1;
|
---|
3739 | }
|
---|
3740 | }
|
---|
3741 |
|
---|
3742 | if (do_got)
|
---|
3743 | {
|
---|
3744 | if (info->shared)
|
---|
3745 | {
|
---|
3746 | /* Output a dynamic relocation for this GOT entry.
|
---|
3747 | In this case it is relative to the base of the
|
---|
3748 | object because the symbol index is zero. */
|
---|
3749 | Elf_Internal_Rela outrel;
|
---|
3750 | bfd_byte *loc;
|
---|
3751 | asection *s = htab->srelgot;
|
---|
3752 |
|
---|
3753 | outrel.r_offset = (off
|
---|
3754 | + htab->sgot->output_offset
|
---|
3755 | + htab->sgot->output_section->vma);
|
---|
3756 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
|
---|
3757 | outrel.r_addend = relocation;
|
---|
3758 | loc = s->contents;
|
---|
3759 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
|
---|
3760 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
---|
3761 | }
|
---|
3762 | else
|
---|
3763 | bfd_put_32 (output_bfd, relocation,
|
---|
3764 | htab->sgot->contents + off);
|
---|
3765 | }
|
---|
3766 |
|
---|
3767 | if (off >= (bfd_vma) -2)
|
---|
3768 | abort ();
|
---|
3769 |
|
---|
3770 | /* Add the base of the GOT to the relocation value. */
|
---|
3771 | relocation = (off
|
---|
3772 | + htab->sgot->output_offset
|
---|
3773 | + htab->sgot->output_section->vma);
|
---|
3774 | }
|
---|
3775 | break;
|
---|
3776 |
|
---|
3777 | case R_PARISC_SEGREL32:
|
---|
3778 | /* If this is the first SEGREL relocation, then initialize
|
---|
3779 | the segment base values. */
|
---|
3780 | if (htab->text_segment_base == (bfd_vma) -1)
|
---|
3781 | bfd_map_over_sections (output_bfd, hppa_record_segment_addr, htab);
|
---|
3782 | break;
|
---|
3783 |
|
---|
3784 | case R_PARISC_PLABEL14R:
|
---|
3785 | case R_PARISC_PLABEL21L:
|
---|
3786 | case R_PARISC_PLABEL32:
|
---|
3787 | if (htab->elf.dynamic_sections_created)
|
---|
3788 | {
|
---|
3789 | bfd_vma off;
|
---|
3790 | bfd_boolean do_plt = 0;
|
---|
3791 |
|
---|
3792 | /* If we have a global symbol with a PLT slot, then
|
---|
3793 | redirect this relocation to it. */
|
---|
3794 | if (h != NULL)
|
---|
3795 | {
|
---|
3796 | off = h->elf.plt.offset;
|
---|
3797 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf))
|
---|
3798 | {
|
---|
3799 | /* In a non-shared link, adjust_dynamic_symbols
|
---|
3800 | isn't called for symbols forced local. We
|
---|
3801 | need to write out the plt entry here. */
|
---|
3802 | if ((off & 1) != 0)
|
---|
3803 | off &= ~1;
|
---|
3804 | else
|
---|
3805 | {
|
---|
3806 | h->elf.plt.offset |= 1;
|
---|
3807 | do_plt = 1;
|
---|
3808 | }
|
---|
3809 | }
|
---|
3810 | }
|
---|
3811 | else
|
---|
3812 | {
|
---|
3813 | bfd_vma *local_plt_offsets;
|
---|
3814 |
|
---|
3815 | if (local_got_offsets == NULL)
|
---|
3816 | abort ();
|
---|
3817 |
|
---|
3818 | local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
|
---|
3819 | off = local_plt_offsets[r_symndx];
|
---|
3820 |
|
---|
3821 | /* As for the local .got entry case, we use the last
|
---|
3822 | bit to record whether we've already initialised
|
---|
3823 | this local .plt entry. */
|
---|
3824 | if ((off & 1) != 0)
|
---|
3825 | off &= ~1;
|
---|
3826 | else
|
---|
3827 | {
|
---|
3828 | local_plt_offsets[r_symndx] |= 1;
|
---|
3829 | do_plt = 1;
|
---|
3830 | }
|
---|
3831 | }
|
---|
3832 |
|
---|
3833 | if (do_plt)
|
---|
3834 | {
|
---|
3835 | if (info->shared)
|
---|
3836 | {
|
---|
3837 | /* Output a dynamic IPLT relocation for this
|
---|
3838 | PLT entry. */
|
---|
3839 | Elf_Internal_Rela outrel;
|
---|
3840 | bfd_byte *loc;
|
---|
3841 | asection *s = htab->srelplt;
|
---|
3842 |
|
---|
3843 | outrel.r_offset = (off
|
---|
3844 | + htab->splt->output_offset
|
---|
3845 | + htab->splt->output_section->vma);
|
---|
3846 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
|
---|
3847 | outrel.r_addend = relocation;
|
---|
3848 | loc = s->contents;
|
---|
3849 | loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
|
---|
3850 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
---|
3851 | }
|
---|
3852 | else
|
---|
3853 | {
|
---|
3854 | bfd_put_32 (output_bfd,
|
---|
3855 | relocation,
|
---|
3856 | htab->splt->contents + off);
|
---|
3857 | bfd_put_32 (output_bfd,
|
---|
3858 | elf_gp (htab->splt->output_section->owner),
|
---|
3859 | htab->splt->contents + off + 4);
|
---|
3860 | }
|
---|
3861 | }
|
---|
3862 |
|
---|
3863 | if (off >= (bfd_vma) -2)
|
---|
3864 | abort ();
|
---|
3865 |
|
---|
3866 | /* PLABELs contain function pointers. Relocation is to
|
---|
3867 | the entry for the function in the .plt. The magic +2
|
---|
3868 | offset signals to $$dyncall that the function pointer
|
---|
3869 | is in the .plt and thus has a gp pointer too.
|
---|
3870 | Exception: Undefined PLABELs should have a value of
|
---|
3871 | zero. */
|
---|
3872 | if (h == NULL
|
---|
3873 | || (h->elf.root.type != bfd_link_hash_undefweak
|
---|
3874 | && h->elf.root.type != bfd_link_hash_undefined))
|
---|
3875 | {
|
---|
3876 | relocation = (off
|
---|
3877 | + htab->splt->output_offset
|
---|
3878 | + htab->splt->output_section->vma
|
---|
3879 | + 2);
|
---|
3880 | }
|
---|
3881 | plabel = 1;
|
---|
3882 | }
|
---|
3883 | /* Fall through and possibly emit a dynamic relocation. */
|
---|
3884 |
|
---|
3885 | case R_PARISC_DIR17F:
|
---|
3886 | case R_PARISC_DIR17R:
|
---|
3887 | case R_PARISC_DIR14F:
|
---|
3888 | case R_PARISC_DIR14R:
|
---|
3889 | case R_PARISC_DIR21L:
|
---|
3890 | case R_PARISC_DPREL14F:
|
---|
3891 | case R_PARISC_DPREL14R:
|
---|
3892 | case R_PARISC_DPREL21L:
|
---|
3893 | case R_PARISC_DIR32:
|
---|
3894 | /* r_symndx will be zero only for relocs against symbols
|
---|
3895 | from removed linkonce sections, or sections discarded by
|
---|
3896 | a linker script. */
|
---|
3897 | if (r_symndx == 0
|
---|
3898 | || (input_section->flags & SEC_ALLOC) == 0)
|
---|
3899 | break;
|
---|
3900 |
|
---|
3901 | /* The reloc types handled here and this conditional
|
---|
3902 | expression must match the code in ..check_relocs and
|
---|
3903 | allocate_dynrelocs. ie. We need exactly the same condition
|
---|
3904 | as in ..check_relocs, with some extra conditions (dynindx
|
---|
3905 | test in this case) to cater for relocs removed by
|
---|
3906 | allocate_dynrelocs. If you squint, the non-shared test
|
---|
3907 | here does indeed match the one in ..check_relocs, the
|
---|
3908 | difference being that here we test DEF_DYNAMIC as well as
|
---|
3909 | !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
|
---|
3910 | which is why we can't use just that test here.
|
---|
3911 | Conversely, DEF_DYNAMIC can't be used in check_relocs as
|
---|
3912 | there all files have not been loaded. */
|
---|
3913 | if ((info->shared
|
---|
3914 | && (IS_ABSOLUTE_RELOC (r_type)
|
---|
3915 | || (h != NULL
|
---|
3916 | && h->elf.dynindx != -1
|
---|
3917 | && (!info->symbolic
|
---|
3918 | || (h->elf.elf_link_hash_flags
|
---|
3919 | & ELF_LINK_HASH_DEF_REGULAR) == 0))))
|
---|
3920 | || (!info->shared
|
---|
3921 | && h != NULL
|
---|
3922 | && h->elf.dynindx != -1
|
---|
3923 | && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
|
---|
3924 | && (((h->elf.elf_link_hash_flags
|
---|
3925 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0
|
---|
3926 | && (h->elf.elf_link_hash_flags
|
---|
3927 | & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
---|
3928 | || h->elf.root.type == bfd_link_hash_undefweak
|
---|
3929 | || h->elf.root.type == bfd_link_hash_undefined)))
|
---|
3930 | {
|
---|
3931 | Elf_Internal_Rela outrel;
|
---|
3932 | bfd_boolean skip;
|
---|
3933 | asection *sreloc;
|
---|
3934 | bfd_byte *loc;
|
---|
3935 |
|
---|
3936 | /* When generating a shared object, these relocations
|
---|
3937 | are copied into the output file to be resolved at run
|
---|
3938 | time. */
|
---|
3939 |
|
---|
3940 | outrel.r_addend = rel->r_addend;
|
---|
3941 | outrel.r_offset =
|
---|
3942 | _bfd_elf_section_offset (output_bfd, info, input_section,
|
---|
3943 | rel->r_offset);
|
---|
3944 | skip = (outrel.r_offset == (bfd_vma) -1
|
---|
3945 | || outrel.r_offset == (bfd_vma) -2);
|
---|
3946 | outrel.r_offset += (input_section->output_offset
|
---|
3947 | + input_section->output_section->vma);
|
---|
3948 |
|
---|
3949 | if (skip)
|
---|
3950 | {
|
---|
3951 | memset (&outrel, 0, sizeof (outrel));
|
---|
3952 | }
|
---|
3953 | else if (h != NULL
|
---|
3954 | && h->elf.dynindx != -1
|
---|
3955 | && (plabel
|
---|
3956 | || !IS_ABSOLUTE_RELOC (r_type)
|
---|
3957 | || !info->shared
|
---|
3958 | || !info->symbolic
|
---|
3959 | || (h->elf.elf_link_hash_flags
|
---|
3960 | & ELF_LINK_HASH_DEF_REGULAR) == 0))
|
---|
3961 | {
|
---|
3962 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type);
|
---|
3963 | }
|
---|
3964 | else /* It's a local symbol, or one marked to become local. */
|
---|
3965 | {
|
---|
3966 | int indx = 0;
|
---|
3967 |
|
---|
3968 | /* Add the absolute offset of the symbol. */
|
---|
3969 | outrel.r_addend += relocation;
|
---|
3970 |
|
---|
3971 | /* Global plabels need to be processed by the
|
---|
3972 | dynamic linker so that functions have at most one
|
---|
3973 | fptr. For this reason, we need to differentiate
|
---|
3974 | between global and local plabels, which we do by
|
---|
3975 | providing the function symbol for a global plabel
|
---|
3976 | reloc, and no symbol for local plabels. */
|
---|
3977 | if (! plabel
|
---|
3978 | && sym_sec != NULL
|
---|
3979 | && sym_sec->output_section != NULL
|
---|
3980 | && ! bfd_is_abs_section (sym_sec))
|
---|
3981 | {
|
---|
3982 | indx = elf_section_data (sym_sec->output_section)->dynindx;
|
---|
3983 | /* We are turning this relocation into one
|
---|
3984 | against a section symbol, so subtract out the
|
---|
3985 | output section's address but not the offset
|
---|
3986 | of the input section in the output section. */
|
---|
3987 | outrel.r_addend -= sym_sec->output_section->vma;
|
---|
3988 | }
|
---|
3989 |
|
---|
3990 | outrel.r_info = ELF32_R_INFO (indx, r_type);
|
---|
3991 | }
|
---|
3992 | #if 0
|
---|
3993 | /* EH info can cause unaligned DIR32 relocs.
|
---|
3994 | Tweak the reloc type for the dynamic linker. */
|
---|
3995 | if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0)
|
---|
3996 | outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info),
|
---|
3997 | R_PARISC_DIR32U);
|
---|
3998 | #endif
|
---|
3999 | sreloc = elf_section_data (input_section)->sreloc;
|
---|
4000 | if (sreloc == NULL)
|
---|
4001 | abort ();
|
---|
4002 |
|
---|
4003 | loc = sreloc->contents;
|
---|
4004 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
|
---|
4005 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
|
---|
4006 | }
|
---|
4007 | break;
|
---|
4008 |
|
---|
4009 | default:
|
---|
4010 | break;
|
---|
4011 | }
|
---|
4012 |
|
---|
4013 | r = final_link_relocate (input_section, contents, rel, relocation,
|
---|
4014 | htab, sym_sec, h);
|
---|
4015 |
|
---|
4016 | if (r == bfd_reloc_ok)
|
---|
4017 | continue;
|
---|
4018 |
|
---|
4019 | if (h != NULL)
|
---|
4020 | sym_name = h->elf.root.root.string;
|
---|
4021 | else
|
---|
4022 | {
|
---|
4023 | sym_name = bfd_elf_string_from_elf_section (input_bfd,
|
---|
4024 | symtab_hdr->sh_link,
|
---|
4025 | sym->st_name);
|
---|
4026 | if (sym_name == NULL)
|
---|
4027 | return FALSE;
|
---|
4028 | if (*sym_name == '\0')
|
---|
4029 | sym_name = bfd_section_name (input_bfd, sym_sec);
|
---|
4030 | }
|
---|
4031 |
|
---|
4032 | howto = elf_hppa_howto_table + r_type;
|
---|
4033 |
|
---|
4034 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported)
|
---|
4035 | {
|
---|
4036 | if (r == bfd_reloc_notsupported || !warned_undef)
|
---|
4037 | {
|
---|
4038 | (*_bfd_error_handler)
|
---|
4039 | (_("%s(%s+0x%lx): cannot handle %s for %s"),
|
---|
4040 | bfd_archive_filename (input_bfd),
|
---|
4041 | input_section->name,
|
---|
4042 | (long) rel->r_offset,
|
---|
4043 | howto->name,
|
---|
4044 | sym_name);
|
---|
4045 | bfd_set_error (bfd_error_bad_value);
|
---|
4046 | return FALSE;
|
---|
4047 | }
|
---|
4048 | }
|
---|
4049 | else
|
---|
4050 | {
|
---|
4051 | if (!((*info->callbacks->reloc_overflow)
|
---|
4052 | (info, sym_name, howto->name, (bfd_vma) 0,
|
---|
4053 | input_bfd, input_section, rel->r_offset)))
|
---|
4054 | return FALSE;
|
---|
4055 | }
|
---|
4056 | }
|
---|
4057 |
|
---|
4058 | return TRUE;
|
---|
4059 | }
|
---|
4060 |
|
---|
4061 | /* Finish up dynamic symbol handling. We set the contents of various
|
---|
4062 | dynamic sections here. */
|
---|
4063 |
|
---|
4064 | static bfd_boolean
|
---|
4065 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
|
---|
4066 | bfd *output_bfd;
|
---|
4067 | struct bfd_link_info *info;
|
---|
4068 | struct elf_link_hash_entry *h;
|
---|
4069 | Elf_Internal_Sym *sym;
|
---|
4070 | {
|
---|
4071 | struct elf32_hppa_link_hash_table *htab;
|
---|
4072 |
|
---|
4073 | htab = hppa_link_hash_table (info);
|
---|
4074 |
|
---|
4075 | if (h->plt.offset != (bfd_vma) -1)
|
---|
4076 | {
|
---|
4077 | bfd_vma value;
|
---|
4078 |
|
---|
4079 | if (h->plt.offset & 1)
|
---|
4080 | abort ();
|
---|
4081 |
|
---|
4082 | /* This symbol has an entry in the procedure linkage table. Set
|
---|
4083 | it up.
|
---|
4084 |
|
---|
4085 | The format of a plt entry is
|
---|
4086 | <funcaddr>
|
---|
4087 | <__gp>
|
---|
4088 | */
|
---|
4089 | value = 0;
|
---|
4090 | if (h->root.type == bfd_link_hash_defined
|
---|
4091 | || h->root.type == bfd_link_hash_defweak)
|
---|
4092 | {
|
---|
4093 | value = h->root.u.def.value;
|
---|
4094 | if (h->root.u.def.section->output_section != NULL)
|
---|
4095 | value += (h->root.u.def.section->output_offset
|
---|
4096 | + h->root.u.def.section->output_section->vma);
|
---|
4097 | }
|
---|
4098 |
|
---|
4099 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
|
---|
4100 | {
|
---|
4101 | Elf_Internal_Rela rel;
|
---|
4102 | bfd_byte *loc;
|
---|
4103 |
|
---|
4104 | /* Create a dynamic IPLT relocation for this entry. */
|
---|
4105 | rel.r_offset = (h->plt.offset
|
---|
4106 | + htab->splt->output_offset
|
---|
4107 | + htab->splt->output_section->vma);
|
---|
4108 | if (h->dynindx != -1)
|
---|
4109 | {
|
---|
4110 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
|
---|
4111 | rel.r_addend = 0;
|
---|
4112 | }
|
---|
4113 | else
|
---|
4114 | {
|
---|
4115 | /* This symbol has been marked to become local, and is
|
---|
4116 | used by a plabel so must be kept in the .plt. */
|
---|
4117 | rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
|
---|
4118 | rel.r_addend = value;
|
---|
4119 | }
|
---|
4120 |
|
---|
4121 | loc = htab->srelplt->contents;
|
---|
4122 | loc += htab->srelplt->reloc_count++ * sizeof (Elf32_External_Rela);
|
---|
4123 | bfd_elf32_swap_reloca_out (htab->splt->output_section->owner,
|
---|
4124 | &rel, loc);
|
---|
4125 | }
|
---|
4126 | else
|
---|
4127 | {
|
---|
4128 | bfd_put_32 (htab->splt->owner,
|
---|
4129 | value,
|
---|
4130 | htab->splt->contents + h->plt.offset);
|
---|
4131 | bfd_put_32 (htab->splt->owner,
|
---|
4132 | elf_gp (htab->splt->output_section->owner),
|
---|
4133 | htab->splt->contents + h->plt.offset + 4);
|
---|
4134 | }
|
---|
4135 |
|
---|
4136 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
---|
4137 | {
|
---|
4138 | /* Mark the symbol as undefined, rather than as defined in
|
---|
4139 | the .plt section. Leave the value alone. */
|
---|
4140 | sym->st_shndx = SHN_UNDEF;
|
---|
4141 | }
|
---|
4142 | }
|
---|
4143 |
|
---|
4144 | if (h->got.offset != (bfd_vma) -1)
|
---|
4145 | {
|
---|
4146 | Elf_Internal_Rela rel;
|
---|
4147 | bfd_byte *loc;
|
---|
4148 |
|
---|
4149 | /* This symbol has an entry in the global offset table. Set it
|
---|
4150 | up. */
|
---|
4151 |
|
---|
4152 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1)
|
---|
4153 | + htab->sgot->output_offset
|
---|
4154 | + htab->sgot->output_section->vma);
|
---|
4155 |
|
---|
4156 | /* If this is a -Bsymbolic link and the symbol is defined
|
---|
4157 | locally or was forced to be local because of a version file,
|
---|
4158 | we just want to emit a RELATIVE reloc. The entry in the
|
---|
4159 | global offset table will already have been initialized in the
|
---|
4160 | relocate_section function. */
|
---|
4161 | if (info->shared
|
---|
4162 | && (info->symbolic || h->dynindx == -1)
|
---|
4163 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
|
---|
4164 | {
|
---|
4165 | rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
|
---|
4166 | rel.r_addend = (h->root.u.def.value
|
---|
4167 | + h->root.u.def.section->output_offset
|
---|
4168 | + h->root.u.def.section->output_section->vma);
|
---|
4169 | }
|
---|
4170 | else
|
---|
4171 | {
|
---|
4172 | if ((h->got.offset & 1) != 0)
|
---|
4173 | abort ();
|
---|
4174 | bfd_put_32 (output_bfd, (bfd_vma) 0,
|
---|
4175 | htab->sgot->contents + h->got.offset);
|
---|
4176 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32);
|
---|
4177 | rel.r_addend = 0;
|
---|
4178 | }
|
---|
4179 |
|
---|
4180 | loc = htab->srelgot->contents;
|
---|
4181 | loc += htab->srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
|
---|
4182 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
|
---|
4183 | }
|
---|
4184 |
|
---|
4185 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
|
---|
4186 | {
|
---|
4187 | asection *s;
|
---|
4188 | Elf_Internal_Rela rel;
|
---|
4189 | bfd_byte *loc;
|
---|
4190 |
|
---|
4191 | /* This symbol needs a copy reloc. Set it up. */
|
---|
4192 |
|
---|
4193 | if (! (h->dynindx != -1
|
---|
4194 | && (h->root.type == bfd_link_hash_defined
|
---|
4195 | || h->root.type == bfd_link_hash_defweak)))
|
---|
4196 | abort ();
|
---|
4197 |
|
---|
4198 | s = htab->srelbss;
|
---|
4199 |
|
---|
4200 | rel.r_offset = (h->root.u.def.value
|
---|
4201 | + h->root.u.def.section->output_offset
|
---|
4202 | + h->root.u.def.section->output_section->vma);
|
---|
4203 | rel.r_addend = 0;
|
---|
4204 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY);
|
---|
4205 | loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
|
---|
4206 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
|
---|
4207 | }
|
---|
4208 |
|
---|
4209 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
---|
4210 | if (h->root.root.string[0] == '_'
|
---|
4211 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
---|
4212 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
|
---|
4213 | {
|
---|
4214 | sym->st_shndx = SHN_ABS;
|
---|
4215 | }
|
---|
4216 |
|
---|
4217 | return TRUE;
|
---|
4218 | }
|
---|
4219 |
|
---|
4220 | /* Used to decide how to sort relocs in an optimal manner for the
|
---|
4221 | dynamic linker, before writing them out. */
|
---|
4222 |
|
---|
4223 | static enum elf_reloc_type_class
|
---|
4224 | elf32_hppa_reloc_type_class (rela)
|
---|
4225 | const Elf_Internal_Rela *rela;
|
---|
4226 | {
|
---|
4227 | if (ELF32_R_SYM (rela->r_info) == 0)
|
---|
4228 | return reloc_class_relative;
|
---|
4229 |
|
---|
4230 | switch ((int) ELF32_R_TYPE (rela->r_info))
|
---|
4231 | {
|
---|
4232 | case R_PARISC_IPLT:
|
---|
4233 | return reloc_class_plt;
|
---|
4234 | case R_PARISC_COPY:
|
---|
4235 | return reloc_class_copy;
|
---|
4236 | default:
|
---|
4237 | return reloc_class_normal;
|
---|
4238 | }
|
---|
4239 | }
|
---|
4240 |
|
---|
4241 | /* Finish up the dynamic sections. */
|
---|
4242 |
|
---|
4243 | static bfd_boolean
|
---|
4244 | elf32_hppa_finish_dynamic_sections (output_bfd, info)
|
---|
4245 | bfd *output_bfd;
|
---|
4246 | struct bfd_link_info *info;
|
---|
4247 | {
|
---|
4248 | bfd *dynobj;
|
---|
4249 | struct elf32_hppa_link_hash_table *htab;
|
---|
4250 | asection *sdyn;
|
---|
4251 |
|
---|
4252 | htab = hppa_link_hash_table (info);
|
---|
4253 | dynobj = htab->elf.dynobj;
|
---|
4254 |
|
---|
4255 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
---|
4256 |
|
---|
4257 | if (htab->elf.dynamic_sections_created)
|
---|
4258 | {
|
---|
4259 | Elf32_External_Dyn *dyncon, *dynconend;
|
---|
4260 |
|
---|
4261 | if (sdyn == NULL)
|
---|
4262 | abort ();
|
---|
4263 |
|
---|
4264 | dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
---|
4265 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
|
---|
4266 | for (; dyncon < dynconend; dyncon++)
|
---|
4267 | {
|
---|
4268 | Elf_Internal_Dyn dyn;
|
---|
4269 | asection *s;
|
---|
4270 |
|
---|
4271 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
---|
4272 |
|
---|
4273 | switch (dyn.d_tag)
|
---|
4274 | {
|
---|
4275 | default:
|
---|
4276 | continue;
|
---|
4277 |
|
---|
4278 | case DT_PLTGOT:
|
---|
4279 | /* Use PLTGOT to set the GOT register. */
|
---|
4280 | dyn.d_un.d_ptr = elf_gp (output_bfd);
|
---|
4281 | break;
|
---|
4282 |
|
---|
4283 | case DT_JMPREL:
|
---|
4284 | s = htab->srelplt;
|
---|
4285 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
---|
4286 | break;
|
---|
4287 |
|
---|
4288 | case DT_PLTRELSZ:
|
---|
4289 | s = htab->srelplt;
|
---|
4290 | dyn.d_un.d_val = s->_raw_size;
|
---|
4291 | break;
|
---|
4292 |
|
---|
4293 | case DT_RELASZ:
|
---|
4294 | /* Don't count procedure linkage table relocs in the
|
---|
4295 | overall reloc count. */
|
---|
4296 | s = htab->srelplt;
|
---|
4297 | if (s == NULL)
|
---|
4298 | continue;
|
---|
4299 | dyn.d_un.d_val -= s->_raw_size;
|
---|
4300 | break;
|
---|
4301 |
|
---|
4302 | case DT_RELA:
|
---|
4303 | /* We may not be using the standard ELF linker script.
|
---|
4304 | If .rela.plt is the first .rela section, we adjust
|
---|
4305 | DT_RELA to not include it. */
|
---|
4306 | s = htab->srelplt;
|
---|
4307 | if (s == NULL)
|
---|
4308 | continue;
|
---|
4309 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset)
|
---|
4310 | continue;
|
---|
4311 | dyn.d_un.d_ptr += s->_raw_size;
|
---|
4312 | break;
|
---|
4313 | }
|
---|
4314 |
|
---|
4315 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
---|
4316 | }
|
---|
4317 | }
|
---|
4318 |
|
---|
4319 | if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
|
---|
4320 | {
|
---|
4321 | /* Fill in the first entry in the global offset table.
|
---|
4322 | We use it to point to our dynamic section, if we have one. */
|
---|
4323 | bfd_put_32 (output_bfd,
|
---|
4324 | (sdyn != NULL
|
---|
4325 | ? sdyn->output_section->vma + sdyn->output_offset
|
---|
4326 | : (bfd_vma) 0),
|
---|
4327 | htab->sgot->contents);
|
---|
4328 |
|
---|
4329 | /* The second entry is reserved for use by the dynamic linker. */
|
---|
4330 | memset (htab->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
|
---|
4331 |
|
---|
4332 | /* Set .got entry size. */
|
---|
4333 | elf_section_data (htab->sgot->output_section)
|
---|
4334 | ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
|
---|
4335 | }
|
---|
4336 |
|
---|
4337 | if (htab->splt != NULL && htab->splt->_raw_size != 0)
|
---|
4338 | {
|
---|
4339 | /* Set plt entry size. */
|
---|
4340 | elf_section_data (htab->splt->output_section)
|
---|
4341 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
|
---|
4342 |
|
---|
4343 | if (htab->need_plt_stub)
|
---|
4344 | {
|
---|
4345 | /* Set up the .plt stub. */
|
---|
4346 | memcpy (htab->splt->contents
|
---|
4347 | + htab->splt->_raw_size - sizeof (plt_stub),
|
---|
4348 | plt_stub, sizeof (plt_stub));
|
---|
4349 |
|
---|
4350 | if ((htab->splt->output_offset
|
---|
4351 | + htab->splt->output_section->vma
|
---|
4352 | + htab->splt->_raw_size)
|
---|
4353 | != (htab->sgot->output_offset
|
---|
4354 | + htab->sgot->output_section->vma))
|
---|
4355 | {
|
---|
4356 | (*_bfd_error_handler)
|
---|
4357 | (_(".got section not immediately after .plt section"));
|
---|
4358 | return FALSE;
|
---|
4359 | }
|
---|
4360 | }
|
---|
4361 | }
|
---|
4362 |
|
---|
4363 | return TRUE;
|
---|
4364 | }
|
---|
4365 |
|
---|
4366 | /* Tweak the OSABI field of the elf header. */
|
---|
4367 |
|
---|
4368 | static void
|
---|
4369 | elf32_hppa_post_process_headers (abfd, link_info)
|
---|
4370 | bfd *abfd;
|
---|
4371 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
|
---|
4372 | {
|
---|
4373 | Elf_Internal_Ehdr * i_ehdrp;
|
---|
4374 |
|
---|
4375 | i_ehdrp = elf_elfheader (abfd);
|
---|
4376 |
|
---|
4377 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
|
---|
4378 | {
|
---|
4379 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
|
---|
4380 | }
|
---|
4381 | else
|
---|
4382 | {
|
---|
4383 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
|
---|
4384 | }
|
---|
4385 | }
|
---|
4386 |
|
---|
4387 | /* Called when writing out an object file to decide the type of a
|
---|
4388 | symbol. */
|
---|
4389 | static int
|
---|
4390 | elf32_hppa_elf_get_symbol_type (elf_sym, type)
|
---|
4391 | Elf_Internal_Sym *elf_sym;
|
---|
4392 | int type;
|
---|
4393 | {
|
---|
4394 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
|
---|
4395 | return STT_PARISC_MILLI;
|
---|
4396 | else
|
---|
4397 | return type;
|
---|
4398 | }
|
---|
4399 |
|
---|
4400 | /* Misc BFD support code. */
|
---|
4401 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
|
---|
4402 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
|
---|
4403 | #define elf_info_to_howto elf_hppa_info_to_howto
|
---|
4404 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
|
---|
4405 |
|
---|
4406 | /* Stuff for the BFD linker. */
|
---|
4407 | #define bfd_elf32_bfd_final_link elf32_hppa_final_link
|
---|
4408 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
|
---|
4409 | #define bfd_elf32_bfd_link_hash_table_free elf32_hppa_link_hash_table_free
|
---|
4410 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
|
---|
4411 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
|
---|
4412 | #define elf_backend_copy_indirect_symbol elf32_hppa_copy_indirect_symbol
|
---|
4413 | #define elf_backend_check_relocs elf32_hppa_check_relocs
|
---|
4414 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
|
---|
4415 | #define elf_backend_fake_sections elf_hppa_fake_sections
|
---|
4416 | #define elf_backend_relocate_section elf32_hppa_relocate_section
|
---|
4417 | #define elf_backend_hide_symbol elf32_hppa_hide_symbol
|
---|
4418 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
|
---|
4419 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
|
---|
4420 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
|
---|
4421 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
|
---|
4422 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
|
---|
4423 | #define elf_backend_object_p elf32_hppa_object_p
|
---|
4424 | #define elf_backend_final_write_processing elf_hppa_final_write_processing
|
---|
4425 | #define elf_backend_post_process_headers elf32_hppa_post_process_headers
|
---|
4426 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
|
---|
4427 | #define elf_backend_reloc_type_class elf32_hppa_reloc_type_class
|
---|
4428 |
|
---|
4429 | #define elf_backend_can_gc_sections 1
|
---|
4430 | #define elf_backend_can_refcount 1
|
---|
4431 | #define elf_backend_plt_alignment 2
|
---|
4432 | #define elf_backend_want_got_plt 0
|
---|
4433 | #define elf_backend_plt_readonly 0
|
---|
4434 | #define elf_backend_want_plt_sym 0
|
---|
4435 | #define elf_backend_got_header_size 8
|
---|
4436 | #define elf_backend_rela_normal 1
|
---|
4437 |
|
---|
4438 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec
|
---|
4439 | #define TARGET_BIG_NAME "elf32-hppa"
|
---|
4440 | #define ELF_ARCH bfd_arch_hppa
|
---|
4441 | #define ELF_MACHINE_CODE EM_PARISC
|
---|
4442 | #define ELF_MAXPAGESIZE 0x1000
|
---|
4443 |
|
---|
4444 | #include "elf32-target.h"
|
---|
4445 |
|
---|
4446 | #undef TARGET_BIG_SYM
|
---|
4447 | #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
|
---|
4448 | #undef TARGET_BIG_NAME
|
---|
4449 | #define TARGET_BIG_NAME "elf32-hppa-linux"
|
---|
4450 |
|
---|
4451 | #define INCLUDED_TARGET_FILE 1
|
---|
4452 | #include "elf32-target.h"
|
---|