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 | 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 "elf-hppa.h"
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36 | #include "elf32-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 PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE
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118 | #define GOT_ENTRY_SIZE 4
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119 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
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120 |
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121 | static const bfd_byte plt_stub[] =
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122 | {
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123 | 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
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124 | 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
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125 | 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
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126 | #define PLT_STUB_ENTRY (3*4)
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127 | 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
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128 | 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
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129 | 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
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130 | 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
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131 | };
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132 |
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133 | /* Section name for stubs is the associated section name plus this
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134 | string. */
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135 | #define STUB_SUFFIX ".stub"
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136 |
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137 | /* Setting the following non-zero makes all long branch stubs
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138 | generated during a shared link of the PIC variety. This saves on
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139 | relocs, but costs one extra instruction per stub. */
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140 | #ifndef LONG_BRANCH_PIC_IN_SHLIB
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141 | #define LONG_BRANCH_PIC_IN_SHLIB 1
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142 | #endif
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143 |
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144 | /* Set this non-zero to use import stubs instead of long branch stubs
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145 | where a .plt entry exists for the symbol. This is a fairly useless
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146 | option as import stubs are bigger than PIC long branch stubs. */
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147 | #ifndef LONG_BRANCH_VIA_PLT
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148 | #define LONG_BRANCH_VIA_PLT 0
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149 | #endif
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150 |
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151 | /* We don't need to copy any PC- or GP-relative dynamic relocs into a
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152 | shared object's dynamic section. */
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153 | #ifndef RELATIVE_DYNAMIC_RELOCS
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154 | #define RELATIVE_DYNAMIC_RELOCS 0
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155 | #endif
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156 |
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157 | enum elf32_hppa_stub_type {
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158 | hppa_stub_long_branch,
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159 | hppa_stub_long_branch_shared,
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160 | hppa_stub_import,
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161 | hppa_stub_import_shared,
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162 | hppa_stub_export,
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163 | hppa_stub_none
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164 | };
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165 |
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166 | struct elf32_hppa_stub_hash_entry {
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167 |
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168 | /* Base hash table entry structure. */
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169 | struct bfd_hash_entry root;
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170 |
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171 | /* The stub section. */
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172 | asection *stub_sec;
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173 |
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174 | #if ! LONG_BRANCH_PIC_IN_SHLIB
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175 | /* It's associated reloc section. */
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176 | asection *reloc_sec;
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177 | #endif
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178 |
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179 | /* Offset within stub_sec of the beginning of this stub. */
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180 | bfd_vma stub_offset;
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181 |
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182 | /* Given the symbol's value and its section we can determine its final
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183 | value when building the stubs (so the stub knows where to jump. */
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184 | bfd_vma target_value;
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185 | asection *target_section;
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186 |
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187 | enum elf32_hppa_stub_type stub_type;
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188 |
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189 | /* The symbol table entry, if any, that this was derived from. */
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190 | struct elf32_hppa_link_hash_entry *h;
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191 |
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192 | /* Where this stub is being called from, or, in the case of combined
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193 | stub sections, the first input section in the group. */
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194 | asection *id_sec;
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195 | };
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196 |
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197 | struct elf32_hppa_link_hash_entry {
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198 |
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199 | struct elf_link_hash_entry elf;
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200 |
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201 | /* A pointer to the most recently used stub hash entry against this
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202 | symbol. */
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203 | struct elf32_hppa_stub_hash_entry *stub_cache;
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204 |
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205 | #if ! LONG_BRANCH_PIC_IN_SHLIB
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206 | /* Used to track whether we have allocated space for a long branch
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207 | stub relocation for this symbol in the given section. */
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208 | asection *stub_reloc_sec;
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209 | #endif
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210 |
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211 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
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212 | /* Used to count relocations for delayed sizing of relocation
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213 | sections. */
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214 | struct elf32_hppa_dyn_reloc_entry {
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215 |
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216 | /* Next relocation in the chain. */
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217 | struct elf32_hppa_dyn_reloc_entry *next;
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218 |
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219 | /* The section in dynobj. */
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220 | asection *section;
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221 |
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222 | /* Number of relocs copied in this section. */
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223 | bfd_size_type count;
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224 | } *reloc_entries;
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225 | #endif
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226 |
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227 | /* Set during a static link if we detect a function is PIC. */
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228 | unsigned int maybe_pic_call:1;
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229 |
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230 | /* Set if the only reason we need a .plt entry is for a non-PIC to
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231 | PIC function call. */
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232 | unsigned int pic_call:1;
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233 |
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234 | /* Set if this symbol is used by a plabel reloc. */
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235 | unsigned int plabel:1;
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236 |
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237 | /* Set if this symbol is an init or fini function and thus should
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238 | use an absolute reloc. */
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239 | unsigned int plt_abs:1;
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240 | };
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241 |
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242 | struct elf32_hppa_link_hash_table {
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243 |
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244 | /* The main hash table. */
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245 | struct elf_link_hash_table root;
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246 |
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247 | /* The stub hash table. */
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248 | struct bfd_hash_table stub_hash_table;
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249 |
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250 | /* Linker stub bfd. */
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251 | bfd *stub_bfd;
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252 |
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253 | /* Linker call-backs. */
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254 | asection * (*add_stub_section) PARAMS ((const char *, asection *));
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255 | void (*layout_sections_again) PARAMS ((void));
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256 |
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257 | /* Array to keep track of which stub sections have been created, and
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258 | information on stub grouping. */
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259 | struct map_stub {
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260 | /* This is the section to which stubs in the group will be
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261 | attached. */
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262 | asection *link_sec;
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263 | /* The stub section. */
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264 | asection *stub_sec;
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265 | #if ! LONG_BRANCH_PIC_IN_SHLIB
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266 | /* The stub section's reloc section. */
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267 | asection *reloc_sec;
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268 | #endif
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269 | } *stub_group;
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270 |
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271 | /* Short-cuts to get to dynamic linker sections. */
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272 | asection *sgot;
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273 | asection *srelgot;
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274 | asection *splt;
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275 | asection *srelplt;
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276 | asection *sdynbss;
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277 | asection *srelbss;
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278 |
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279 | /* Used during a final link to store the base of the text and data
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280 | segments so that we can perform SEGREL relocations. */
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281 | bfd_vma text_segment_base;
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282 | bfd_vma data_segment_base;
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283 |
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284 | /* Whether we support multiple sub-spaces for shared libs. */
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285 | unsigned int multi_subspace:1;
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286 |
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287 | /* Flags set when PCREL12F and PCREL17F branches detected. Used to
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288 | select suitable defaults for the stub group size. */
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289 | unsigned int has_12bit_branch:1;
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290 | unsigned int has_17bit_branch:1;
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291 |
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292 | /* Set if we need a .plt stub to support lazy dynamic linking. */
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293 | unsigned int need_plt_stub:1;
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294 | };
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295 |
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296 | /* Various hash macros and functions. */
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297 | #define hppa_link_hash_table(p) \
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298 | ((struct elf32_hppa_link_hash_table *) ((p)->hash))
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299 |
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300 | #define hppa_stub_hash_lookup(table, string, create, copy) \
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301 | ((struct elf32_hppa_stub_hash_entry *) \
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302 | bfd_hash_lookup ((table), (string), (create), (copy)))
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303 |
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304 | static struct bfd_hash_entry *stub_hash_newfunc
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305 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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306 |
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307 | static struct bfd_hash_entry *hppa_link_hash_newfunc
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308 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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309 |
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310 | static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
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311 | PARAMS ((bfd *));
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312 |
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313 | /* Stub handling functions. */
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314 | static char *hppa_stub_name
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315 | PARAMS ((const asection *, const asection *,
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316 | const struct elf32_hppa_link_hash_entry *,
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317 | const Elf_Internal_Rela *));
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318 |
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319 | static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
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320 | PARAMS ((const asection *, const asection *,
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321 | struct elf32_hppa_link_hash_entry *,
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322 | const Elf_Internal_Rela *,
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323 | struct elf32_hppa_link_hash_table *));
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324 |
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325 | static struct elf32_hppa_stub_hash_entry *hppa_add_stub
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326 | PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
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327 |
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328 | static enum elf32_hppa_stub_type hppa_type_of_stub
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329 | PARAMS ((asection *, const Elf_Internal_Rela *,
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330 | struct elf32_hppa_link_hash_entry *, bfd_vma));
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331 |
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332 | static boolean hppa_build_one_stub
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333 | PARAMS ((struct bfd_hash_entry *, PTR));
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334 |
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335 | static boolean hppa_size_one_stub
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336 | PARAMS ((struct bfd_hash_entry *, PTR));
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337 |
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338 | /* BFD and elf backend functions. */
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339 | static boolean elf32_hppa_object_p PARAMS ((bfd *));
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340 |
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341 | static boolean elf32_hppa_add_symbol_hook
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342 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
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343 | const char **, flagword *, asection **, bfd_vma *));
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344 |
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345 | static boolean elf32_hppa_create_dynamic_sections
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346 | PARAMS ((bfd *, struct bfd_link_info *));
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347 |
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348 | static boolean elf32_hppa_check_relocs
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349 | PARAMS ((bfd *, struct bfd_link_info *,
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350 | asection *, const Elf_Internal_Rela *));
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351 |
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352 | static asection *elf32_hppa_gc_mark_hook
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353 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
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354 | struct elf_link_hash_entry *, Elf_Internal_Sym *));
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355 |
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356 | static boolean elf32_hppa_gc_sweep_hook
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357 | PARAMS ((bfd *, struct bfd_link_info *,
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358 | asection *, const Elf_Internal_Rela *));
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359 |
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360 | static void elf32_hppa_hide_symbol
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361 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
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362 |
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363 | static boolean elf32_hppa_adjust_dynamic_symbol
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364 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
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365 |
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366 | static boolean hppa_handle_PIC_calls
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367 | PARAMS ((struct elf_link_hash_entry *, PTR));
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368 |
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369 | static boolean allocate_plt_and_got
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370 | PARAMS ((struct elf_link_hash_entry *, PTR));
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371 |
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372 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \
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373 | || RELATIVE_DYNAMIC_RELOCS)
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374 | static boolean hppa_discard_copies
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375 | PARAMS ((struct elf_link_hash_entry *, PTR));
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376 | #endif
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377 |
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378 | static boolean clobber_millicode_symbols
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379 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
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380 |
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381 | static boolean elf32_hppa_size_dynamic_sections
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382 | PARAMS ((bfd *, struct bfd_link_info *));
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383 |
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384 | static boolean elf32_hppa_final_link
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385 | PARAMS ((bfd *, struct bfd_link_info *));
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386 |
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387 | static void hppa_record_segment_addr
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388 | PARAMS ((bfd *, asection *, PTR));
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389 |
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390 | static bfd_reloc_status_type final_link_relocate
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391 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
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392 | bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
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393 | struct elf32_hppa_link_hash_entry *));
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394 |
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395 | static boolean elf32_hppa_relocate_section
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396 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
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397 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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398 |
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399 | static int hppa_unwind_entry_compare
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400 | PARAMS ((const PTR, const PTR));
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401 |
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402 | static boolean elf32_hppa_finish_dynamic_symbol
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403 | PARAMS ((bfd *, struct bfd_link_info *,
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404 | struct elf_link_hash_entry *, Elf_Internal_Sym *));
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405 |
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406 | static boolean elf32_hppa_finish_dynamic_sections
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407 | PARAMS ((bfd *, struct bfd_link_info *));
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408 |
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409 | static void elf32_hppa_post_process_headers
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410 | PARAMS ((bfd *, struct bfd_link_info *));
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411 |
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412 | static int elf32_hppa_elf_get_symbol_type
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413 | PARAMS ((Elf_Internal_Sym *, int));
|
---|
414 |
|
---|
415 | /* Assorted hash table functions. */
|
---|
416 |
|
---|
417 | /* Initialize an entry in the stub hash table. */
|
---|
418 |
|
---|
419 | static struct bfd_hash_entry *
|
---|
420 | stub_hash_newfunc (entry, table, string)
|
---|
421 | struct bfd_hash_entry *entry;
|
---|
422 | struct bfd_hash_table *table;
|
---|
423 | const char *string;
|
---|
424 | {
|
---|
425 | struct elf32_hppa_stub_hash_entry *ret;
|
---|
426 |
|
---|
427 | ret = (struct elf32_hppa_stub_hash_entry *) entry;
|
---|
428 |
|
---|
429 | /* Allocate the structure if it has not already been allocated by a
|
---|
430 | subclass. */
|
---|
431 | if (ret == NULL)
|
---|
432 | {
|
---|
433 | ret = ((struct elf32_hppa_stub_hash_entry *)
|
---|
434 | bfd_hash_allocate (table,
|
---|
435 | sizeof (struct elf32_hppa_stub_hash_entry)));
|
---|
436 | if (ret == NULL)
|
---|
437 | return NULL;
|
---|
438 | }
|
---|
439 |
|
---|
440 | /* Call the allocation method of the superclass. */
|
---|
441 | ret = ((struct elf32_hppa_stub_hash_entry *)
|
---|
442 | bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
|
---|
443 |
|
---|
444 | if (ret)
|
---|
445 | {
|
---|
446 | /* Initialize the local fields. */
|
---|
447 | ret->stub_sec = NULL;
|
---|
448 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
449 | ret->reloc_sec = NULL;
|
---|
450 | #endif
|
---|
451 | ret->stub_offset = 0;
|
---|
452 | ret->target_value = 0;
|
---|
453 | ret->target_section = NULL;
|
---|
454 | ret->stub_type = hppa_stub_long_branch;
|
---|
455 | ret->h = NULL;
|
---|
456 | ret->id_sec = NULL;
|
---|
457 | }
|
---|
458 |
|
---|
459 | return (struct bfd_hash_entry *) ret;
|
---|
460 | }
|
---|
461 |
|
---|
462 | /* Initialize an entry in the link hash table. */
|
---|
463 |
|
---|
464 | static struct bfd_hash_entry *
|
---|
465 | hppa_link_hash_newfunc (entry, table, string)
|
---|
466 | struct bfd_hash_entry *entry;
|
---|
467 | struct bfd_hash_table *table;
|
---|
468 | const char *string;
|
---|
469 | {
|
---|
470 | struct elf32_hppa_link_hash_entry *ret;
|
---|
471 |
|
---|
472 | ret = (struct elf32_hppa_link_hash_entry *) entry;
|
---|
473 |
|
---|
474 | /* Allocate the structure if it has not already been allocated by a
|
---|
475 | subclass. */
|
---|
476 | if (ret == NULL)
|
---|
477 | {
|
---|
478 | ret = ((struct elf32_hppa_link_hash_entry *)
|
---|
479 | bfd_hash_allocate (table,
|
---|
480 | sizeof (struct elf32_hppa_link_hash_entry)));
|
---|
481 | if (ret == NULL)
|
---|
482 | return NULL;
|
---|
483 | }
|
---|
484 |
|
---|
485 | /* Call the allocation method of the superclass. */
|
---|
486 | ret = ((struct elf32_hppa_link_hash_entry *)
|
---|
487 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
---|
488 | table, string));
|
---|
489 |
|
---|
490 | if (ret)
|
---|
491 | {
|
---|
492 | /* Initialize the local fields. */
|
---|
493 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
494 | ret->stub_reloc_sec = NULL;
|
---|
495 | #endif
|
---|
496 | ret->stub_cache = NULL;
|
---|
497 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
|
---|
498 | ret->reloc_entries = NULL;
|
---|
499 | #endif
|
---|
500 | ret->maybe_pic_call = 0;
|
---|
501 | ret->pic_call = 0;
|
---|
502 | ret->plabel = 0;
|
---|
503 | ret->plt_abs = 0;
|
---|
504 | }
|
---|
505 |
|
---|
506 | return (struct bfd_hash_entry *) ret;
|
---|
507 | }
|
---|
508 |
|
---|
509 | /* Create the derived linker hash table. The PA ELF port uses the derived
|
---|
510 | hash table to keep information specific to the PA ELF linker (without
|
---|
511 | using static variables). */
|
---|
512 |
|
---|
513 | static struct bfd_link_hash_table *
|
---|
514 | elf32_hppa_link_hash_table_create (abfd)
|
---|
515 | bfd *abfd;
|
---|
516 | {
|
---|
517 | struct elf32_hppa_link_hash_table *ret;
|
---|
518 |
|
---|
519 | ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret)));
|
---|
520 | if (ret == NULL)
|
---|
521 | return NULL;
|
---|
522 |
|
---|
523 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc))
|
---|
524 | {
|
---|
525 | bfd_release (abfd, ret);
|
---|
526 | return NULL;
|
---|
527 | }
|
---|
528 |
|
---|
529 | /* Init the stub hash table too. */
|
---|
530 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
|
---|
531 | return NULL;
|
---|
532 |
|
---|
533 | ret->stub_bfd = NULL;
|
---|
534 | ret->add_stub_section = NULL;
|
---|
535 | ret->layout_sections_again = NULL;
|
---|
536 | ret->stub_group = NULL;
|
---|
537 | ret->sgot = NULL;
|
---|
538 | ret->srelgot = NULL;
|
---|
539 | ret->splt = NULL;
|
---|
540 | ret->srelplt = NULL;
|
---|
541 | ret->sdynbss = NULL;
|
---|
542 | ret->srelbss = NULL;
|
---|
543 | ret->text_segment_base = (bfd_vma) -1;
|
---|
544 | ret->data_segment_base = (bfd_vma) -1;
|
---|
545 | ret->multi_subspace = 0;
|
---|
546 | ret->has_12bit_branch = 0;
|
---|
547 | ret->has_17bit_branch = 0;
|
---|
548 | ret->need_plt_stub = 0;
|
---|
549 |
|
---|
550 | return &ret->root.root;
|
---|
551 | }
|
---|
552 |
|
---|
553 | /* Build a name for an entry in the stub hash table. */
|
---|
554 |
|
---|
555 | static char *
|
---|
556 | hppa_stub_name (input_section, sym_sec, hash, rel)
|
---|
557 | const asection *input_section;
|
---|
558 | const asection *sym_sec;
|
---|
559 | const struct elf32_hppa_link_hash_entry *hash;
|
---|
560 | const Elf_Internal_Rela *rel;
|
---|
561 | {
|
---|
562 | char *stub_name;
|
---|
563 | size_t len;
|
---|
564 |
|
---|
565 | if (hash)
|
---|
566 | {
|
---|
567 | len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
|
---|
568 | stub_name = bfd_malloc (len);
|
---|
569 | if (stub_name != NULL)
|
---|
570 | {
|
---|
571 | sprintf (stub_name, "%08x_%s+%x",
|
---|
572 | input_section->id & 0xffffffff,
|
---|
573 | hash->elf.root.root.string,
|
---|
574 | (int) rel->r_addend & 0xffffffff);
|
---|
575 | }
|
---|
576 | }
|
---|
577 | else
|
---|
578 | {
|
---|
579 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
|
---|
580 | stub_name = bfd_malloc (len);
|
---|
581 | if (stub_name != NULL)
|
---|
582 | {
|
---|
583 | sprintf (stub_name, "%08x_%x:%x+%x",
|
---|
584 | input_section->id & 0xffffffff,
|
---|
585 | sym_sec->id & 0xffffffff,
|
---|
586 | (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
|
---|
587 | (int) rel->r_addend & 0xffffffff);
|
---|
588 | }
|
---|
589 | }
|
---|
590 | return stub_name;
|
---|
591 | }
|
---|
592 |
|
---|
593 | /* Look up an entry in the stub hash. Stub entries are cached because
|
---|
594 | creating the stub name takes a bit of time. */
|
---|
595 |
|
---|
596 | static struct elf32_hppa_stub_hash_entry *
|
---|
597 | hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink)
|
---|
598 | const asection *input_section;
|
---|
599 | const asection *sym_sec;
|
---|
600 | struct elf32_hppa_link_hash_entry *hash;
|
---|
601 | const Elf_Internal_Rela *rel;
|
---|
602 | struct elf32_hppa_link_hash_table *hplink;
|
---|
603 | {
|
---|
604 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
605 | const asection *id_sec;
|
---|
606 |
|
---|
607 | /* If this input section is part of a group of sections sharing one
|
---|
608 | stub section, then use the id of the first section in the group.
|
---|
609 | Stub names need to include a section id, as there may well be
|
---|
610 | more than one stub used to reach say, printf, and we need to
|
---|
611 | distinguish between them. */
|
---|
612 | id_sec = hplink->stub_group[input_section->id].link_sec;
|
---|
613 |
|
---|
614 | if (hash != NULL && hash->stub_cache != NULL
|
---|
615 | && hash->stub_cache->h == hash
|
---|
616 | && hash->stub_cache->id_sec == id_sec)
|
---|
617 | {
|
---|
618 | stub_entry = hash->stub_cache;
|
---|
619 | }
|
---|
620 | else
|
---|
621 | {
|
---|
622 | char *stub_name;
|
---|
623 |
|
---|
624 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
|
---|
625 | if (stub_name == NULL)
|
---|
626 | return NULL;
|
---|
627 |
|
---|
628 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
|
---|
629 | stub_name, false, false);
|
---|
630 | if (stub_entry == NULL)
|
---|
631 | {
|
---|
632 | if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak)
|
---|
633 | (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"),
|
---|
634 | bfd_get_filename (input_section->owner),
|
---|
635 | input_section->name,
|
---|
636 | (long) rel->r_offset,
|
---|
637 | stub_name);
|
---|
638 | }
|
---|
639 | else
|
---|
640 | {
|
---|
641 | if (hash != NULL)
|
---|
642 | hash->stub_cache = stub_entry;
|
---|
643 | }
|
---|
644 |
|
---|
645 | free (stub_name);
|
---|
646 | }
|
---|
647 |
|
---|
648 | return stub_entry;
|
---|
649 | }
|
---|
650 |
|
---|
651 | /* Add a new stub entry to the stub hash. Not all fields of the new
|
---|
652 | stub entry are initialised. */
|
---|
653 |
|
---|
654 | static struct elf32_hppa_stub_hash_entry *
|
---|
655 | hppa_add_stub (stub_name, section, hplink)
|
---|
656 | const char *stub_name;
|
---|
657 | asection *section;
|
---|
658 | struct elf32_hppa_link_hash_table *hplink;
|
---|
659 | {
|
---|
660 | asection *link_sec;
|
---|
661 | asection *stub_sec;
|
---|
662 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
663 |
|
---|
664 | link_sec = hplink->stub_group[section->id].link_sec;
|
---|
665 | stub_sec = hplink->stub_group[section->id].stub_sec;
|
---|
666 | if (stub_sec == NULL)
|
---|
667 | {
|
---|
668 | stub_sec = hplink->stub_group[link_sec->id].stub_sec;
|
---|
669 | if (stub_sec == NULL)
|
---|
670 | {
|
---|
671 | size_t len;
|
---|
672 | char *s_name;
|
---|
673 |
|
---|
674 | len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
|
---|
675 | s_name = bfd_alloc (hplink->stub_bfd, len);
|
---|
676 | if (s_name == NULL)
|
---|
677 | return NULL;
|
---|
678 |
|
---|
679 | strcpy (s_name, link_sec->name);
|
---|
680 | strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
|
---|
681 | stub_sec = (*hplink->add_stub_section) (s_name, link_sec);
|
---|
682 | if (stub_sec == NULL)
|
---|
683 | return NULL;
|
---|
684 | hplink->stub_group[link_sec->id].stub_sec = stub_sec;
|
---|
685 | }
|
---|
686 | hplink->stub_group[section->id].stub_sec = stub_sec;
|
---|
687 | }
|
---|
688 |
|
---|
689 | /* Enter this entry into the linker stub hash table. */
|
---|
690 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name,
|
---|
691 | true, false);
|
---|
692 | if (stub_entry == NULL)
|
---|
693 | {
|
---|
694 | (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
|
---|
695 | bfd_get_filename (section->owner),
|
---|
696 | stub_name);
|
---|
697 | return NULL;
|
---|
698 | }
|
---|
699 |
|
---|
700 | stub_entry->stub_sec = stub_sec;
|
---|
701 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
702 | stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec;
|
---|
703 | #endif
|
---|
704 | stub_entry->stub_offset = 0;
|
---|
705 | stub_entry->id_sec = link_sec;
|
---|
706 | return stub_entry;
|
---|
707 | }
|
---|
708 |
|
---|
709 | /* Determine the type of stub needed, if any, for a call. */
|
---|
710 |
|
---|
711 | static enum elf32_hppa_stub_type
|
---|
712 | hppa_type_of_stub (input_sec, rel, hash, destination)
|
---|
713 | asection *input_sec;
|
---|
714 | const Elf_Internal_Rela *rel;
|
---|
715 | struct elf32_hppa_link_hash_entry *hash;
|
---|
716 | bfd_vma destination;
|
---|
717 | {
|
---|
718 | bfd_vma location;
|
---|
719 | bfd_vma branch_offset;
|
---|
720 | bfd_vma max_branch_offset;
|
---|
721 | unsigned int r_type;
|
---|
722 |
|
---|
723 | if (hash != NULL
|
---|
724 | && (((hash->elf.root.type == bfd_link_hash_defined
|
---|
725 | || hash->elf.root.type == bfd_link_hash_defweak)
|
---|
726 | && hash->elf.root.u.def.section->output_section == NULL)
|
---|
727 | || (hash->elf.root.type == bfd_link_hash_defweak
|
---|
728 | && hash->elf.dynindx != -1
|
---|
729 | && hash->elf.plt.offset != (bfd_vma) -1)
|
---|
730 | || hash->elf.root.type == bfd_link_hash_undefweak
|
---|
731 | || hash->elf.root.type == bfd_link_hash_undefined
|
---|
732 | || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF))))
|
---|
733 | {
|
---|
734 | /* If output_section is NULL, then it's a symbol defined in a
|
---|
735 | shared library. We will need an import stub. Decide between
|
---|
736 | hppa_stub_import and hppa_stub_import_shared later. For
|
---|
737 | shared links we need stubs for undefined or weak syms too;
|
---|
738 | They will presumably be resolved by the dynamic linker. */
|
---|
739 | return hppa_stub_import;
|
---|
740 | }
|
---|
741 |
|
---|
742 | /* Determine where the call point is. */
|
---|
743 | location = (input_sec->output_offset
|
---|
744 | + input_sec->output_section->vma
|
---|
745 | + rel->r_offset);
|
---|
746 |
|
---|
747 | branch_offset = destination - location - 8;
|
---|
748 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
749 |
|
---|
750 | /* Determine if a long branch stub is needed. parisc branch offsets
|
---|
751 | are relative to the second instruction past the branch, ie. +8
|
---|
752 | bytes on from the branch instruction location. The offset is
|
---|
753 | signed and counts in units of 4 bytes. */
|
---|
754 | if (r_type == (unsigned int) R_PARISC_PCREL17F)
|
---|
755 | {
|
---|
756 | max_branch_offset = (1 << (17-1)) << 2;
|
---|
757 | }
|
---|
758 | else if (r_type == (unsigned int) R_PARISC_PCREL12F)
|
---|
759 | {
|
---|
760 | max_branch_offset = (1 << (12-1)) << 2;
|
---|
761 | }
|
---|
762 | else /* R_PARISC_PCREL22F. */
|
---|
763 | {
|
---|
764 | max_branch_offset = (1 << (22-1)) << 2;
|
---|
765 | }
|
---|
766 |
|
---|
767 | if (branch_offset + max_branch_offset >= 2*max_branch_offset)
|
---|
768 | {
|
---|
769 | #if LONG_BRANCH_VIA_PLT
|
---|
770 | if (hash != NULL
|
---|
771 | && hash->elf.dynindx != -1
|
---|
772 | && hash->elf.plt.offset != (bfd_vma) -1
|
---|
773 | && hash->elf.type != STT_PARISC_MILLI)
|
---|
774 | {
|
---|
775 | /* If we are doing a shared link and find we need a long
|
---|
776 | branch stub, then go via the .plt if possible. */
|
---|
777 | return hppa_stub_import;
|
---|
778 | }
|
---|
779 | else
|
---|
780 | #endif
|
---|
781 | return hppa_stub_long_branch;
|
---|
782 | }
|
---|
783 | return hppa_stub_none;
|
---|
784 | }
|
---|
785 |
|
---|
786 | /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
|
---|
787 | IN_ARG contains the link info pointer. */
|
---|
788 |
|
---|
789 | #define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
|
---|
790 | #define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
|
---|
791 |
|
---|
792 | #define BL_R1 0xe8200000 /* b,l .+8,%r1 */
|
---|
793 | #define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
|
---|
794 | #define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
|
---|
795 |
|
---|
796 | #define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
|
---|
797 | #define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
|
---|
798 | #define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
|
---|
799 | #define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
|
---|
800 |
|
---|
801 | #define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
|
---|
802 | #define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
|
---|
803 |
|
---|
804 | #define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
|
---|
805 | #define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
|
---|
806 | #define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
|
---|
807 | #define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
|
---|
808 |
|
---|
809 | #define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
|
---|
810 | #define NOP 0x08000240 /* nop */
|
---|
811 | #define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
|
---|
812 | #define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
|
---|
813 | #define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
|
---|
814 |
|
---|
815 | #ifndef R19_STUBS
|
---|
816 | #define R19_STUBS 1
|
---|
817 | #endif
|
---|
818 |
|
---|
819 | #if R19_STUBS
|
---|
820 | #define LDW_R1_DLT LDW_R1_R19
|
---|
821 | #else
|
---|
822 | #define LDW_R1_DLT LDW_R1_DP
|
---|
823 | #endif
|
---|
824 |
|
---|
825 | static boolean
|
---|
826 | hppa_build_one_stub (gen_entry, in_arg)
|
---|
827 | struct bfd_hash_entry *gen_entry;
|
---|
828 | PTR in_arg;
|
---|
829 | {
|
---|
830 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
831 | struct bfd_link_info *info;
|
---|
832 | struct elf32_hppa_link_hash_table *hplink;
|
---|
833 | asection *stub_sec;
|
---|
834 | bfd *stub_bfd;
|
---|
835 | bfd_byte *loc;
|
---|
836 | bfd_vma sym_value;
|
---|
837 | bfd_vma insn;
|
---|
838 | bfd_vma off;
|
---|
839 | int val;
|
---|
840 | int size;
|
---|
841 |
|
---|
842 | /* Massage our args to the form they really have. */
|
---|
843 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
|
---|
844 | info = (struct bfd_link_info *) in_arg;
|
---|
845 |
|
---|
846 | hplink = hppa_link_hash_table (info);
|
---|
847 | stub_sec = stub_entry->stub_sec;
|
---|
848 |
|
---|
849 | /* Make a note of the offset within the stubs for this entry. */
|
---|
850 | stub_entry->stub_offset = stub_sec->_raw_size;
|
---|
851 | loc = stub_sec->contents + stub_entry->stub_offset;
|
---|
852 |
|
---|
853 | stub_bfd = stub_sec->owner;
|
---|
854 |
|
---|
855 | switch (stub_entry->stub_type)
|
---|
856 | {
|
---|
857 | case hppa_stub_long_branch:
|
---|
858 | /* Create the long branch. A long branch is formed with "ldil"
|
---|
859 | loading the upper bits of the target address into a register,
|
---|
860 | then branching with "be" which adds in the lower bits.
|
---|
861 | The "be" has its delay slot nullified. */
|
---|
862 | sym_value = (stub_entry->target_value
|
---|
863 | + stub_entry->target_section->output_offset
|
---|
864 | + stub_entry->target_section->output_section->vma);
|
---|
865 |
|
---|
866 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel);
|
---|
867 | insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
|
---|
868 | bfd_put_32 (stub_bfd, insn, loc);
|
---|
869 |
|
---|
870 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2;
|
---|
871 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
|
---|
872 | bfd_put_32 (stub_bfd, insn, loc + 4);
|
---|
873 |
|
---|
874 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
875 | if (info->shared)
|
---|
876 | {
|
---|
877 | /* Output a dynamic relocation for this stub. We only
|
---|
878 | output one PCREL21L reloc per stub, trusting that the
|
---|
879 | dynamic linker will also fix the implied PCREL17R for the
|
---|
880 | second instruction. PCREL21L dynamic relocs had better
|
---|
881 | never be emitted for some other purpose... */
|
---|
882 | asection *srel;
|
---|
883 | Elf_Internal_Rela outrel;
|
---|
884 |
|
---|
885 | if (stub_entry->h == NULL)
|
---|
886 | {
|
---|
887 | (*_bfd_error_handler)
|
---|
888 | (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"),
|
---|
889 | bfd_get_filename (stub_entry->target_section->owner),
|
---|
890 | stub_sec->name,
|
---|
891 | (long) stub_entry->stub_offset,
|
---|
892 | stub_entry->root.string);
|
---|
893 | bfd_set_error (bfd_error_bad_value);
|
---|
894 | return false;
|
---|
895 | }
|
---|
896 |
|
---|
897 | srel = stub_entry->reloc_sec;
|
---|
898 | if (srel == NULL)
|
---|
899 | {
|
---|
900 | (*_bfd_error_handler)
|
---|
901 | (_("Could not find relocation section for %s"),
|
---|
902 | stub_sec->name);
|
---|
903 | bfd_set_error (bfd_error_bad_value);
|
---|
904 | return false;
|
---|
905 | }
|
---|
906 |
|
---|
907 | outrel.r_offset = (stub_entry->stub_offset
|
---|
908 | + stub_sec->output_offset
|
---|
909 | + stub_sec->output_section->vma);
|
---|
910 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L);
|
---|
911 | outrel.r_addend = sym_value;
|
---|
912 | bfd_elf32_swap_reloca_out (stub_sec->output_section->owner,
|
---|
913 | &outrel,
|
---|
914 | ((Elf32_External_Rela *)
|
---|
915 | srel->contents + srel->reloc_count));
|
---|
916 | ++srel->reloc_count;
|
---|
917 | }
|
---|
918 | #endif
|
---|
919 | size = 8;
|
---|
920 | break;
|
---|
921 |
|
---|
922 | case hppa_stub_long_branch_shared:
|
---|
923 | /* Branches are relative. This is where we are going to. */
|
---|
924 | sym_value = (stub_entry->target_value
|
---|
925 | + stub_entry->target_section->output_offset
|
---|
926 | + stub_entry->target_section->output_section->vma);
|
---|
927 |
|
---|
928 | /* And this is where we are coming from, more or less. */
|
---|
929 | sym_value -= (stub_entry->stub_offset
|
---|
930 | + stub_sec->output_offset
|
---|
931 | + stub_sec->output_section->vma);
|
---|
932 |
|
---|
933 | bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc);
|
---|
934 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
|
---|
935 | insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
|
---|
936 | bfd_put_32 (stub_bfd, insn, loc + 4);
|
---|
937 |
|
---|
938 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
|
---|
939 | insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
|
---|
940 | bfd_put_32 (stub_bfd, insn, loc + 8);
|
---|
941 | size = 12;
|
---|
942 | break;
|
---|
943 |
|
---|
944 | case hppa_stub_import:
|
---|
945 | case hppa_stub_import_shared:
|
---|
946 | off = stub_entry->h->elf.plt.offset;
|
---|
947 | if (off >= (bfd_vma) -2)
|
---|
948 | abort ();
|
---|
949 |
|
---|
950 | off &= ~ (bfd_vma) 1;
|
---|
951 | sym_value = (off
|
---|
952 | + hplink->splt->output_offset
|
---|
953 | + hplink->splt->output_section->vma
|
---|
954 | - elf_gp (hplink->splt->output_section->owner));
|
---|
955 |
|
---|
956 | insn = ADDIL_DP;
|
---|
957 | #if R19_STUBS
|
---|
958 | if (stub_entry->stub_type == hppa_stub_import_shared)
|
---|
959 | insn = ADDIL_R19;
|
---|
960 | #endif
|
---|
961 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel),
|
---|
962 | insn = hppa_rebuild_insn ((int) insn, val, 21);
|
---|
963 | bfd_put_32 (stub_bfd, insn, loc);
|
---|
964 |
|
---|
965 | /* It is critical to use lrsel/rrsel here because we are using
|
---|
966 | two different offsets (+0 and +4) from sym_value. If we use
|
---|
967 | lsel/rsel then with unfortunate sym_values we will round
|
---|
968 | sym_value+4 up to the next 2k block leading to a mis-match
|
---|
969 | between the lsel and rsel value. */
|
---|
970 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel);
|
---|
971 | insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
|
---|
972 | bfd_put_32 (stub_bfd, insn, loc + 4);
|
---|
973 |
|
---|
974 | if (hplink->multi_subspace)
|
---|
975 | {
|
---|
976 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
|
---|
977 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
|
---|
978 | bfd_put_32 (stub_bfd, insn, loc + 8);
|
---|
979 |
|
---|
980 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
|
---|
981 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
|
---|
982 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
|
---|
983 | bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
|
---|
984 |
|
---|
985 | size = 28;
|
---|
986 | }
|
---|
987 | else
|
---|
988 | {
|
---|
989 | bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
|
---|
990 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
|
---|
991 | insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
|
---|
992 | bfd_put_32 (stub_bfd, insn, loc + 12);
|
---|
993 |
|
---|
994 | size = 16;
|
---|
995 | }
|
---|
996 |
|
---|
997 | if (!info->shared
|
---|
998 | && stub_entry->h != NULL
|
---|
999 | && stub_entry->h->pic_call)
|
---|
1000 | {
|
---|
1001 | /* Build the .plt entry needed to call a PIC function from
|
---|
1002 | statically linked code. We don't need any relocs. */
|
---|
1003 | bfd *dynobj;
|
---|
1004 | struct elf32_hppa_link_hash_entry *eh;
|
---|
1005 | bfd_vma value;
|
---|
1006 |
|
---|
1007 | dynobj = hplink->root.dynobj;
|
---|
1008 | eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
|
---|
1009 |
|
---|
1010 | if (eh->elf.root.type != bfd_link_hash_defined
|
---|
1011 | && eh->elf.root.type != bfd_link_hash_defweak)
|
---|
1012 | abort ();
|
---|
1013 |
|
---|
1014 | value = (eh->elf.root.u.def.value
|
---|
1015 | + eh->elf.root.u.def.section->output_offset
|
---|
1016 | + eh->elf.root.u.def.section->output_section->vma);
|
---|
1017 |
|
---|
1018 | /* Fill in the entry in the procedure linkage table.
|
---|
1019 |
|
---|
1020 | The format of a plt entry is
|
---|
1021 | <funcaddr>
|
---|
1022 | <__gp>. */
|
---|
1023 |
|
---|
1024 | bfd_put_32 (hplink->splt->owner, value,
|
---|
1025 | hplink->splt->contents + off);
|
---|
1026 | value = elf_gp (hplink->splt->output_section->owner);
|
---|
1027 | bfd_put_32 (hplink->splt->owner, value,
|
---|
1028 | hplink->splt->contents + off + 4);
|
---|
1029 | }
|
---|
1030 | break;
|
---|
1031 |
|
---|
1032 | case hppa_stub_export:
|
---|
1033 | /* Branches are relative. This is where we are going to. */
|
---|
1034 | sym_value = (stub_entry->target_value
|
---|
1035 | + stub_entry->target_section->output_offset
|
---|
1036 | + stub_entry->target_section->output_section->vma);
|
---|
1037 |
|
---|
1038 | /* And this is where we are coming from. */
|
---|
1039 | sym_value -= (stub_entry->stub_offset
|
---|
1040 | + stub_sec->output_offset
|
---|
1041 | + stub_sec->output_section->vma);
|
---|
1042 |
|
---|
1043 | if (sym_value - 8 + 0x40000 >= 0x80000)
|
---|
1044 | {
|
---|
1045 | (*_bfd_error_handler)
|
---|
1046 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
|
---|
1047 | bfd_get_filename (stub_entry->target_section->owner),
|
---|
1048 | stub_sec->name,
|
---|
1049 | (long) stub_entry->stub_offset,
|
---|
1050 | stub_entry->root.string);
|
---|
1051 | bfd_set_error (bfd_error_bad_value);
|
---|
1052 | return false;
|
---|
1053 | }
|
---|
1054 |
|
---|
1055 | val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
|
---|
1056 | insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
|
---|
1057 | bfd_put_32 (stub_bfd, insn, loc);
|
---|
1058 |
|
---|
1059 | bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
|
---|
1060 | bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
|
---|
1061 | bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
|
---|
1062 | bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
|
---|
1063 | bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20);
|
---|
1064 |
|
---|
1065 | /* Point the function symbol at the stub. */
|
---|
1066 | stub_entry->h->elf.root.u.def.section = stub_sec;
|
---|
1067 | stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size;
|
---|
1068 |
|
---|
1069 | size = 24;
|
---|
1070 | break;
|
---|
1071 |
|
---|
1072 | default:
|
---|
1073 | BFD_FAIL ();
|
---|
1074 | return false;
|
---|
1075 | }
|
---|
1076 |
|
---|
1077 | stub_sec->_raw_size += size;
|
---|
1078 | return true;
|
---|
1079 | }
|
---|
1080 |
|
---|
1081 | #undef LDIL_R1
|
---|
1082 | #undef BE_SR4_R1
|
---|
1083 | #undef BL_R1
|
---|
1084 | #undef ADDIL_R1
|
---|
1085 | #undef DEPI_R1
|
---|
1086 | #undef ADDIL_DP
|
---|
1087 | #undef LDW_R1_R21
|
---|
1088 | #undef LDW_R1_DLT
|
---|
1089 | #undef LDW_R1_R19
|
---|
1090 | #undef ADDIL_R19
|
---|
1091 | #undef LDW_R1_DP
|
---|
1092 | #undef LDSID_R21_R1
|
---|
1093 | #undef MTSP_R1
|
---|
1094 | #undef BE_SR0_R21
|
---|
1095 | #undef STW_RP
|
---|
1096 | #undef BV_R0_R21
|
---|
1097 | #undef BL_RP
|
---|
1098 | #undef NOP
|
---|
1099 | #undef LDW_RP
|
---|
1100 | #undef LDSID_RP_R1
|
---|
1101 | #undef BE_SR0_RP
|
---|
1102 |
|
---|
1103 | /* As above, but don't actually build the stub. Just bump offset so
|
---|
1104 | we know stub section sizes. */
|
---|
1105 |
|
---|
1106 | static boolean
|
---|
1107 | hppa_size_one_stub (gen_entry, in_arg)
|
---|
1108 | struct bfd_hash_entry *gen_entry;
|
---|
1109 | PTR in_arg;
|
---|
1110 | {
|
---|
1111 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
1112 | struct elf32_hppa_link_hash_table *hplink;
|
---|
1113 | int size;
|
---|
1114 |
|
---|
1115 | /* Massage our args to the form they really have. */
|
---|
1116 | stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
|
---|
1117 | hplink = (struct elf32_hppa_link_hash_table *) in_arg;
|
---|
1118 |
|
---|
1119 | if (stub_entry->stub_type == hppa_stub_long_branch)
|
---|
1120 | {
|
---|
1121 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
1122 | if (stub_entry->reloc_sec != NULL)
|
---|
1123 | stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela);
|
---|
1124 | #endif
|
---|
1125 | size = 8;
|
---|
1126 | }
|
---|
1127 | else if (stub_entry->stub_type == hppa_stub_long_branch_shared)
|
---|
1128 | size = 12;
|
---|
1129 | else if (stub_entry->stub_type == hppa_stub_export)
|
---|
1130 | size = 24;
|
---|
1131 | else /* hppa_stub_import or hppa_stub_import_shared. */
|
---|
1132 | {
|
---|
1133 | if (hplink->multi_subspace)
|
---|
1134 | size = 28;
|
---|
1135 | else
|
---|
1136 | size = 16;
|
---|
1137 | }
|
---|
1138 |
|
---|
1139 | stub_entry->stub_sec->_raw_size += size;
|
---|
1140 | return true;
|
---|
1141 | }
|
---|
1142 |
|
---|
1143 | /* Return nonzero if ABFD represents an HPPA ELF32 file.
|
---|
1144 | Additionally we set the default architecture and machine. */
|
---|
1145 |
|
---|
1146 | static boolean
|
---|
1147 | elf32_hppa_object_p (abfd)
|
---|
1148 | bfd *abfd;
|
---|
1149 | {
|
---|
1150 | Elf_Internal_Ehdr * i_ehdrp;
|
---|
1151 | unsigned int flags;
|
---|
1152 |
|
---|
1153 | i_ehdrp = elf_elfheader (abfd);
|
---|
1154 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
|
---|
1155 | {
|
---|
1156 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
|
---|
1157 | return false;
|
---|
1158 | }
|
---|
1159 | else
|
---|
1160 | {
|
---|
1161 | if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
|
---|
1162 | return false;
|
---|
1163 | }
|
---|
1164 |
|
---|
1165 | flags = i_ehdrp->e_flags;
|
---|
1166 | switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
|
---|
1167 | {
|
---|
1168 | case EFA_PARISC_1_0:
|
---|
1169 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
|
---|
1170 | case EFA_PARISC_1_1:
|
---|
1171 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
|
---|
1172 | case EFA_PARISC_2_0:
|
---|
1173 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
|
---|
1174 | case EFA_PARISC_2_0 | EF_PARISC_WIDE:
|
---|
1175 | return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
|
---|
1176 | }
|
---|
1177 | return true;
|
---|
1178 | }
|
---|
1179 |
|
---|
1180 | /* Undo the generic ELF code's subtraction of section->vma from the
|
---|
1181 | value of each external symbol. */
|
---|
1182 |
|
---|
1183 | static boolean
|
---|
1184 | elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
|
---|
1185 | bfd *abfd ATTRIBUTE_UNUSED;
|
---|
1186 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1187 | const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
|
---|
1188 | const char **namep ATTRIBUTE_UNUSED;
|
---|
1189 | flagword *flagsp ATTRIBUTE_UNUSED;
|
---|
1190 | asection **secp;
|
---|
1191 | bfd_vma *valp;
|
---|
1192 | {
|
---|
1193 | *valp += (*secp)->vma;
|
---|
1194 | return true;
|
---|
1195 | }
|
---|
1196 |
|
---|
1197 | /* Create the .plt and .got sections, and set up our hash table
|
---|
1198 | short-cuts to various dynamic sections. */
|
---|
1199 |
|
---|
1200 | static boolean
|
---|
1201 | elf32_hppa_create_dynamic_sections (abfd, info)
|
---|
1202 | bfd *abfd;
|
---|
1203 | struct bfd_link_info *info;
|
---|
1204 | {
|
---|
1205 | struct elf32_hppa_link_hash_table *hplink;
|
---|
1206 |
|
---|
1207 | /* Don't try to create the .plt and .got twice. */
|
---|
1208 | hplink = hppa_link_hash_table (info);
|
---|
1209 | if (hplink->splt != NULL)
|
---|
1210 | return true;
|
---|
1211 |
|
---|
1212 | /* Call the generic code to do most of the work. */
|
---|
1213 | if (! _bfd_elf_create_dynamic_sections (abfd, info))
|
---|
1214 | return false;
|
---|
1215 |
|
---|
1216 | hplink->splt = bfd_get_section_by_name (abfd, ".plt");
|
---|
1217 | hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
|
---|
1218 |
|
---|
1219 | hplink->sgot = bfd_get_section_by_name (abfd, ".got");
|
---|
1220 | hplink->srelgot = bfd_make_section (abfd, ".rela.got");
|
---|
1221 | if (hplink->srelgot == NULL
|
---|
1222 | || ! bfd_set_section_flags (abfd, hplink->srelgot,
|
---|
1223 | (SEC_ALLOC
|
---|
1224 | | SEC_LOAD
|
---|
1225 | | SEC_HAS_CONTENTS
|
---|
1226 | | SEC_IN_MEMORY
|
---|
1227 | | SEC_LINKER_CREATED
|
---|
1228 | | SEC_READONLY))
|
---|
1229 | || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2))
|
---|
1230 | return false;
|
---|
1231 |
|
---|
1232 | hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
|
---|
1233 | hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
|
---|
1234 |
|
---|
1235 | return true;
|
---|
1236 | }
|
---|
1237 |
|
---|
1238 | /* Look through the relocs for a section during the first phase, and
|
---|
1239 | allocate space in the global offset table or procedure linkage
|
---|
1240 | table. At this point we haven't necessarily read all the input
|
---|
1241 | files. */
|
---|
1242 |
|
---|
1243 | static boolean
|
---|
1244 | elf32_hppa_check_relocs (abfd, info, sec, relocs)
|
---|
1245 | bfd *abfd;
|
---|
1246 | struct bfd_link_info *info;
|
---|
1247 | asection *sec;
|
---|
1248 | const Elf_Internal_Rela *relocs;
|
---|
1249 | {
|
---|
1250 | bfd *dynobj;
|
---|
1251 | Elf_Internal_Shdr *symtab_hdr;
|
---|
1252 | struct elf_link_hash_entry **sym_hashes;
|
---|
1253 | bfd_signed_vma *local_got_refcounts;
|
---|
1254 | const Elf_Internal_Rela *rel;
|
---|
1255 | const Elf_Internal_Rela *rel_end;
|
---|
1256 | struct elf32_hppa_link_hash_table *hplink;
|
---|
1257 | asection *sreloc;
|
---|
1258 | asection *stubreloc;
|
---|
1259 |
|
---|
1260 | if (info->relocateable)
|
---|
1261 | return true;
|
---|
1262 |
|
---|
1263 | hplink = hppa_link_hash_table (info);
|
---|
1264 | dynobj = hplink->root.dynobj;
|
---|
1265 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
---|
1266 | sym_hashes = elf_sym_hashes (abfd);
|
---|
1267 | local_got_refcounts = elf_local_got_refcounts (abfd);
|
---|
1268 | sreloc = NULL;
|
---|
1269 | stubreloc = NULL;
|
---|
1270 |
|
---|
1271 | rel_end = relocs + sec->reloc_count;
|
---|
1272 | for (rel = relocs; rel < rel_end; rel++)
|
---|
1273 | {
|
---|
1274 | enum {
|
---|
1275 | NEED_GOT = 1,
|
---|
1276 | NEED_PLT = 2,
|
---|
1277 | NEED_DYNREL = 4,
|
---|
1278 | #if LONG_BRANCH_PIC_IN_SHLIB
|
---|
1279 | NEED_STUBREL = 0, /* We won't be needing them in this case. */
|
---|
1280 | #else
|
---|
1281 | NEED_STUBREL = 8,
|
---|
1282 | #endif
|
---|
1283 | PLT_PLABEL = 16
|
---|
1284 | };
|
---|
1285 |
|
---|
1286 | unsigned int r_symndx, r_type;
|
---|
1287 | struct elf32_hppa_link_hash_entry *h;
|
---|
1288 | int need_entry;
|
---|
1289 |
|
---|
1290 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
1291 |
|
---|
1292 | if (r_symndx < symtab_hdr->sh_info)
|
---|
1293 | h = NULL;
|
---|
1294 | else
|
---|
1295 | h = ((struct elf32_hppa_link_hash_entry *)
|
---|
1296 | sym_hashes[r_symndx - symtab_hdr->sh_info]);
|
---|
1297 |
|
---|
1298 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
1299 |
|
---|
1300 | switch (r_type)
|
---|
1301 | {
|
---|
1302 | case R_PARISC_DLTIND14F:
|
---|
1303 | case R_PARISC_DLTIND14R:
|
---|
1304 | case R_PARISC_DLTIND21L:
|
---|
1305 | /* This symbol requires a global offset table entry. */
|
---|
1306 | need_entry = NEED_GOT;
|
---|
1307 |
|
---|
1308 | /* Mark this section as containing PIC code. */
|
---|
1309 | sec->flags |= SEC_HAS_GOT_REF;
|
---|
1310 | break;
|
---|
1311 |
|
---|
1312 | case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
|
---|
1313 | case R_PARISC_PLABEL21L:
|
---|
1314 | case R_PARISC_PLABEL32:
|
---|
1315 | /* If the addend is non-zero, we break badly. */
|
---|
1316 | if (rel->r_addend != 0)
|
---|
1317 | abort ();
|
---|
1318 |
|
---|
1319 | /* If we are creating a shared library, then we need to
|
---|
1320 | create a PLT entry for all PLABELs, because PLABELs with
|
---|
1321 | local symbols may be passed via a pointer to another
|
---|
1322 | object. Additionally, output a dynamic relocation
|
---|
1323 | pointing to the PLT entry.
|
---|
1324 | For executables, the original 32-bit ABI allowed two
|
---|
1325 | different styles of PLABELs (function pointers): For
|
---|
1326 | global functions, the PLABEL word points into the .plt
|
---|
1327 | two bytes past a (function address, gp) pair, and for
|
---|
1328 | local functions the PLABEL points directly at the
|
---|
1329 | function. The magic +2 for the first type allows us to
|
---|
1330 | differentiate between the two. As you can imagine, this
|
---|
1331 | is a real pain when it comes to generating code to call
|
---|
1332 | functions indirectly or to compare function pointers.
|
---|
1333 | We avoid the mess by always pointing a PLABEL into the
|
---|
1334 | .plt, even for local functions. */
|
---|
1335 | need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
|
---|
1336 | break;
|
---|
1337 |
|
---|
1338 | case R_PARISC_PCREL12F:
|
---|
1339 | hplink->has_12bit_branch = 1;
|
---|
1340 | /* Fall thru. */
|
---|
1341 | case R_PARISC_PCREL17C:
|
---|
1342 | case R_PARISC_PCREL17F:
|
---|
1343 | hplink->has_17bit_branch = 1;
|
---|
1344 | /* Fall thru. */
|
---|
1345 | case R_PARISC_PCREL22F:
|
---|
1346 | /* Function calls might need to go through the .plt, and
|
---|
1347 | might require long branch stubs. */
|
---|
1348 | if (h == NULL)
|
---|
1349 | {
|
---|
1350 | /* We know local syms won't need a .plt entry, and if
|
---|
1351 | they need a long branch stub we can't guarantee that
|
---|
1352 | we can reach the stub. So just flag an error later
|
---|
1353 | if we're doing a shared link and find we need a long
|
---|
1354 | branch stub. */
|
---|
1355 | continue;
|
---|
1356 | }
|
---|
1357 | else
|
---|
1358 | {
|
---|
1359 | /* Global symbols will need a .plt entry if they remain
|
---|
1360 | global, and in most cases won't need a long branch
|
---|
1361 | stub. Unfortunately, we have to cater for the case
|
---|
1362 | where a symbol is forced local by versioning, or due
|
---|
1363 | to symbolic linking, and we lose the .plt entry. */
|
---|
1364 | need_entry = NEED_PLT | NEED_STUBREL;
|
---|
1365 | if (h->elf.type == STT_PARISC_MILLI)
|
---|
1366 | need_entry = NEED_STUBREL;
|
---|
1367 | }
|
---|
1368 | break;
|
---|
1369 |
|
---|
1370 | case R_PARISC_SEGBASE: /* Used to set segment base. */
|
---|
1371 | case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
|
---|
1372 | case R_PARISC_PCREL14F: /* PC relative load/store. */
|
---|
1373 | case R_PARISC_PCREL14R:
|
---|
1374 | case R_PARISC_PCREL17R: /* External branches. */
|
---|
1375 | case R_PARISC_PCREL21L: /* As above, and for load/store too. */
|
---|
1376 | /* We don't need to propagate the relocation if linking a
|
---|
1377 | shared object since these are section relative. */
|
---|
1378 | continue;
|
---|
1379 |
|
---|
1380 | case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
|
---|
1381 | case R_PARISC_DPREL14R:
|
---|
1382 | case R_PARISC_DPREL21L:
|
---|
1383 | if (info->shared)
|
---|
1384 | {
|
---|
1385 | (*_bfd_error_handler)
|
---|
1386 | (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
|
---|
1387 | bfd_get_filename (abfd),
|
---|
1388 | elf_hppa_howto_table[r_type].name);
|
---|
1389 | bfd_set_error (bfd_error_bad_value);
|
---|
1390 | return false;
|
---|
1391 | }
|
---|
1392 | /* Fall through. */
|
---|
1393 |
|
---|
1394 | case R_PARISC_DIR17F: /* Used for external branches. */
|
---|
1395 | case R_PARISC_DIR17R:
|
---|
1396 | case R_PARISC_DIR14F: /* Used for load/store from absolute locn. */
|
---|
1397 | case R_PARISC_DIR14R:
|
---|
1398 | case R_PARISC_DIR21L: /* As above, and for ext branches too. */
|
---|
1399 | #if 1
|
---|
1400 | /* Help debug shared library creation. Any of the above
|
---|
1401 | relocs can be used in shared libs, but they may cause
|
---|
1402 | pages to become unshared. */
|
---|
1403 | if (info->shared)
|
---|
1404 | {
|
---|
1405 | (*_bfd_error_handler)
|
---|
1406 | (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
|
---|
1407 | bfd_get_filename (abfd),
|
---|
1408 | elf_hppa_howto_table[r_type].name);
|
---|
1409 | }
|
---|
1410 | /* Fall through. */
|
---|
1411 | #endif
|
---|
1412 |
|
---|
1413 | case R_PARISC_DIR32: /* .word relocs. */
|
---|
1414 | /* We may want to output a dynamic relocation later. */
|
---|
1415 | need_entry = NEED_DYNREL;
|
---|
1416 | break;
|
---|
1417 |
|
---|
1418 | /* This relocation describes the C++ object vtable hierarchy.
|
---|
1419 | Reconstruct it for later use during GC. */
|
---|
1420 | case R_PARISC_GNU_VTINHERIT:
|
---|
1421 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec,
|
---|
1422 | &h->elf, rel->r_offset))
|
---|
1423 | return false;
|
---|
1424 | continue;
|
---|
1425 |
|
---|
1426 | /* This relocation describes which C++ vtable entries are actually
|
---|
1427 | used. Record for later use during GC. */
|
---|
1428 | case R_PARISC_GNU_VTENTRY:
|
---|
1429 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec,
|
---|
1430 | &h->elf, rel->r_addend))
|
---|
1431 | return false;
|
---|
1432 | continue;
|
---|
1433 |
|
---|
1434 | default:
|
---|
1435 | continue;
|
---|
1436 | }
|
---|
1437 |
|
---|
1438 | /* Now carry out our orders. */
|
---|
1439 | if (need_entry & NEED_GOT)
|
---|
1440 | {
|
---|
1441 | /* Allocate space for a GOT entry, as well as a dynamic
|
---|
1442 | relocation for this entry. */
|
---|
1443 | if (dynobj == NULL)
|
---|
1444 | hplink->root.dynobj = dynobj = abfd;
|
---|
1445 |
|
---|
1446 | if (hplink->sgot == NULL)
|
---|
1447 | {
|
---|
1448 | if (! elf32_hppa_create_dynamic_sections (dynobj, info))
|
---|
1449 | return false;
|
---|
1450 | }
|
---|
1451 |
|
---|
1452 | if (h != NULL)
|
---|
1453 | {
|
---|
1454 | if (h->elf.got.refcount == -1)
|
---|
1455 | {
|
---|
1456 | h->elf.got.refcount = 1;
|
---|
1457 |
|
---|
1458 | /* Make sure this symbol is output as a dynamic symbol. */
|
---|
1459 | if (h->elf.dynindx == -1)
|
---|
1460 | {
|
---|
1461 | if (! bfd_elf32_link_record_dynamic_symbol (info,
|
---|
1462 | &h->elf))
|
---|
1463 | return false;
|
---|
1464 | }
|
---|
1465 | }
|
---|
1466 | else
|
---|
1467 | h->elf.got.refcount += 1;
|
---|
1468 | }
|
---|
1469 | else
|
---|
1470 | {
|
---|
1471 | /* This is a global offset table entry for a local symbol. */
|
---|
1472 | if (local_got_refcounts == NULL)
|
---|
1473 | {
|
---|
1474 | size_t size;
|
---|
1475 |
|
---|
1476 | /* Allocate space for local got offsets and local
|
---|
1477 | plt offsets. Done this way to save polluting
|
---|
1478 | elf_obj_tdata with another target specific
|
---|
1479 | pointer. */
|
---|
1480 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma);
|
---|
1481 | local_got_refcounts = ((bfd_signed_vma *)
|
---|
1482 | bfd_alloc (abfd, size));
|
---|
1483 | if (local_got_refcounts == NULL)
|
---|
1484 | return false;
|
---|
1485 | elf_local_got_refcounts (abfd) = local_got_refcounts;
|
---|
1486 | memset (local_got_refcounts, -1, size);
|
---|
1487 | }
|
---|
1488 | if (local_got_refcounts[r_symndx] == -1)
|
---|
1489 | local_got_refcounts[r_symndx] = 1;
|
---|
1490 | else
|
---|
1491 | local_got_refcounts[r_symndx] += 1;
|
---|
1492 | }
|
---|
1493 | }
|
---|
1494 |
|
---|
1495 | if (need_entry & NEED_PLT)
|
---|
1496 | {
|
---|
1497 | /* If we are creating a shared library, and this is a reloc
|
---|
1498 | against a weak symbol or a global symbol in a dynamic
|
---|
1499 | object, then we will be creating an import stub and a
|
---|
1500 | .plt entry for the symbol. Similarly, on a normal link
|
---|
1501 | to symbols defined in a dynamic object we'll need the
|
---|
1502 | import stub and a .plt entry. We don't know yet whether
|
---|
1503 | the symbol is defined or not, so make an entry anyway and
|
---|
1504 | clean up later in adjust_dynamic_symbol. */
|
---|
1505 | if ((sec->flags & SEC_ALLOC) != 0)
|
---|
1506 | {
|
---|
1507 | if (h != NULL)
|
---|
1508 | {
|
---|
1509 | if (h->elf.plt.refcount == -1)
|
---|
1510 | {
|
---|
1511 | h->elf.plt.refcount = 1;
|
---|
1512 | h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
---|
1513 | }
|
---|
1514 | else
|
---|
1515 | h->elf.plt.refcount += 1;
|
---|
1516 |
|
---|
1517 | /* If this .plt entry is for a plabel, mark it so
|
---|
1518 | that adjust_dynamic_symbol will keep the entry
|
---|
1519 | even if it appears to be local. */
|
---|
1520 | if (need_entry & PLT_PLABEL)
|
---|
1521 | h->plabel = 1;
|
---|
1522 | }
|
---|
1523 | else if (need_entry & PLT_PLABEL)
|
---|
1524 | {
|
---|
1525 | int indx;
|
---|
1526 |
|
---|
1527 | if (local_got_refcounts == NULL)
|
---|
1528 | {
|
---|
1529 | size_t size;
|
---|
1530 |
|
---|
1531 | /* Allocate space for local got offsets and local
|
---|
1532 | plt offsets. */
|
---|
1533 | size = symtab_hdr->sh_info * 2 * sizeof (bfd_signed_vma);
|
---|
1534 | local_got_refcounts = ((bfd_signed_vma *)
|
---|
1535 | bfd_alloc (abfd, size));
|
---|
1536 | if (local_got_refcounts == NULL)
|
---|
1537 | return false;
|
---|
1538 | elf_local_got_refcounts (abfd) = local_got_refcounts;
|
---|
1539 | memset (local_got_refcounts, -1, size);
|
---|
1540 | }
|
---|
1541 | indx = r_symndx + symtab_hdr->sh_info;
|
---|
1542 | if (local_got_refcounts[indx] == -1)
|
---|
1543 | local_got_refcounts[indx] = 1;
|
---|
1544 | else
|
---|
1545 | local_got_refcounts[indx] += 1;
|
---|
1546 | }
|
---|
1547 | }
|
---|
1548 | }
|
---|
1549 |
|
---|
1550 | if (need_entry & (NEED_DYNREL | NEED_STUBREL))
|
---|
1551 | {
|
---|
1552 | /* Flag this symbol as having a non-got, non-plt reference
|
---|
1553 | so that we generate copy relocs if it turns out to be
|
---|
1554 | dynamic. */
|
---|
1555 | if (h != NULL)
|
---|
1556 | h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
|
---|
1557 |
|
---|
1558 | /* If we are creating a shared library then we need to copy
|
---|
1559 | the reloc into the shared library. However, if we are
|
---|
1560 | linking with -Bsymbolic, we need only copy absolute
|
---|
1561 | relocs or relocs against symbols that are not defined in
|
---|
1562 | an object we are including in the link. PC- or DP- or
|
---|
1563 | DLT-relative relocs against any local sym or global sym
|
---|
1564 | with DEF_REGULAR set, can be discarded. At this point we
|
---|
1565 | have not seen all the input files, so it is possible that
|
---|
1566 | DEF_REGULAR is not set now but will be set later (it is
|
---|
1567 | never cleared). We account for that possibility below by
|
---|
1568 | storing information in the reloc_entries field of the
|
---|
1569 | hash table entry.
|
---|
1570 |
|
---|
1571 | A similar situation to the -Bsymbolic case occurs when
|
---|
1572 | creating shared libraries and symbol visibility changes
|
---|
1573 | render the symbol local.
|
---|
1574 |
|
---|
1575 | As it turns out, all the relocs we will be creating here
|
---|
1576 | are absolute, so we cannot remove them on -Bsymbolic
|
---|
1577 | links or visibility changes anyway. A STUB_REL reloc
|
---|
1578 | is absolute too, as in that case it is the reloc in the
|
---|
1579 | stub we will be creating, rather than copying the PCREL
|
---|
1580 | reloc in the branch. */
|
---|
1581 | if ((sec->flags & SEC_ALLOC) != 0
|
---|
1582 | && info->shared
|
---|
1583 | #if RELATIVE_DYNAMIC_RELOCS
|
---|
1584 | && (!info->symbolic
|
---|
1585 | || is_absolute_reloc (r_type)
|
---|
1586 | || (h != NULL
|
---|
1587 | && ((h->elf.elf_link_hash_flags
|
---|
1588 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))
|
---|
1589 | #endif
|
---|
1590 | )
|
---|
1591 | {
|
---|
1592 | boolean doit;
|
---|
1593 | asection *srel;
|
---|
1594 |
|
---|
1595 | srel = sreloc;
|
---|
1596 | if ((need_entry & NEED_STUBREL))
|
---|
1597 | srel = stubreloc;
|
---|
1598 |
|
---|
1599 | /* Create a reloc section in dynobj and make room for
|
---|
1600 | this reloc. */
|
---|
1601 | if (srel == NULL)
|
---|
1602 | {
|
---|
1603 | char *name;
|
---|
1604 |
|
---|
1605 | if (dynobj == NULL)
|
---|
1606 | hplink->root.dynobj = dynobj = abfd;
|
---|
1607 |
|
---|
1608 | name = bfd_elf_string_from_elf_section
|
---|
1609 | (abfd,
|
---|
1610 | elf_elfheader (abfd)->e_shstrndx,
|
---|
1611 | elf_section_data (sec)->rel_hdr.sh_name);
|
---|
1612 | if (name == NULL)
|
---|
1613 | {
|
---|
1614 | (*_bfd_error_handler)
|
---|
1615 | (_("Could not find relocation section for %s"),
|
---|
1616 | sec->name);
|
---|
1617 | bfd_set_error (bfd_error_bad_value);
|
---|
1618 | return false;
|
---|
1619 | }
|
---|
1620 |
|
---|
1621 | if ((need_entry & NEED_STUBREL))
|
---|
1622 | {
|
---|
1623 | size_t len = strlen (name) + sizeof (STUB_SUFFIX);
|
---|
1624 | char *newname = bfd_malloc (len);
|
---|
1625 |
|
---|
1626 | if (newname == NULL)
|
---|
1627 | return false;
|
---|
1628 | strcpy (newname, name);
|
---|
1629 | strcpy (newname + len - sizeof (STUB_SUFFIX),
|
---|
1630 | STUB_SUFFIX);
|
---|
1631 | name = newname;
|
---|
1632 | }
|
---|
1633 |
|
---|
1634 | srel = bfd_get_section_by_name (dynobj, name);
|
---|
1635 | if (srel == NULL)
|
---|
1636 | {
|
---|
1637 | flagword flags;
|
---|
1638 |
|
---|
1639 | srel = bfd_make_section (dynobj, name);
|
---|
1640 | flags = (SEC_HAS_CONTENTS | SEC_READONLY
|
---|
1641 | | SEC_IN_MEMORY | SEC_LINKER_CREATED);
|
---|
1642 | if ((sec->flags & SEC_ALLOC) != 0)
|
---|
1643 | flags |= SEC_ALLOC | SEC_LOAD;
|
---|
1644 | if (srel == NULL
|
---|
1645 | || !bfd_set_section_flags (dynobj, srel, flags)
|
---|
1646 | || !bfd_set_section_alignment (dynobj, srel, 2))
|
---|
1647 | return false;
|
---|
1648 | }
|
---|
1649 | else if ((need_entry & NEED_STUBREL))
|
---|
1650 | free (name);
|
---|
1651 |
|
---|
1652 | if ((need_entry & NEED_STUBREL))
|
---|
1653 | stubreloc = srel;
|
---|
1654 | else
|
---|
1655 | sreloc = srel;
|
---|
1656 | }
|
---|
1657 |
|
---|
1658 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
1659 | /* If this is a function call, we only need one dynamic
|
---|
1660 | reloc for the stub as all calls to a particular
|
---|
1661 | function will go through the same stub. Actually, a
|
---|
1662 | long branch stub needs two relocations, but we count
|
---|
1663 | on some intelligence on the part of the dynamic
|
---|
1664 | linker. */
|
---|
1665 | if ((need_entry & NEED_STUBREL))
|
---|
1666 | {
|
---|
1667 | doit = h->stub_reloc_sec != stubreloc;
|
---|
1668 | h->stub_reloc_sec = stubreloc;
|
---|
1669 | }
|
---|
1670 | else
|
---|
1671 | #endif
|
---|
1672 | doit = 1;
|
---|
1673 |
|
---|
1674 | if (doit)
|
---|
1675 | {
|
---|
1676 | srel->_raw_size += sizeof (Elf32_External_Rela);
|
---|
1677 |
|
---|
1678 | #if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
|
---|
1679 | /* Keep track of relocations we have entered for
|
---|
1680 | this global symbol, so that we can discard them
|
---|
1681 | later if necessary. */
|
---|
1682 | if (h != NULL
|
---|
1683 | && (0
|
---|
1684 | #if RELATIVE_DYNAMIC_RELOCS
|
---|
1685 | || ! is_absolute_reloc (rtype)
|
---|
1686 | #endif
|
---|
1687 | || (need_entry & NEED_STUBREL)))
|
---|
1688 | {
|
---|
1689 | struct elf32_hppa_dyn_reloc_entry *p;
|
---|
1690 |
|
---|
1691 | for (p = h->reloc_entries; p != NULL; p = p->next)
|
---|
1692 | if (p->section == srel)
|
---|
1693 | break;
|
---|
1694 |
|
---|
1695 | if (p == NULL)
|
---|
1696 | {
|
---|
1697 | p = ((struct elf32_hppa_dyn_reloc_entry *)
|
---|
1698 | bfd_alloc (dynobj, sizeof *p));
|
---|
1699 | if (p == NULL)
|
---|
1700 | return false;
|
---|
1701 | p->next = h->reloc_entries;
|
---|
1702 | h->reloc_entries = p;
|
---|
1703 | p->section = srel;
|
---|
1704 | p->count = 0;
|
---|
1705 | }
|
---|
1706 |
|
---|
1707 | /* NEED_STUBREL and NEED_DYNREL are never both
|
---|
1708 | set. Leave the count at zero for the
|
---|
1709 | NEED_STUBREL case as we only ever have one
|
---|
1710 | stub reloc per section per symbol, and this
|
---|
1711 | simplifies code in hppa_discard_copies. */
|
---|
1712 | if (! (need_entry & NEED_STUBREL))
|
---|
1713 | ++p->count;
|
---|
1714 | }
|
---|
1715 | #endif
|
---|
1716 | }
|
---|
1717 | }
|
---|
1718 | }
|
---|
1719 | }
|
---|
1720 |
|
---|
1721 | return true;
|
---|
1722 | }
|
---|
1723 |
|
---|
1724 | /* Return the section that should be marked against garbage collection
|
---|
1725 | for a given relocation. */
|
---|
1726 |
|
---|
1727 | static asection *
|
---|
1728 | elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym)
|
---|
1729 | bfd *abfd;
|
---|
1730 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1731 | Elf_Internal_Rela *rel;
|
---|
1732 | struct elf_link_hash_entry *h;
|
---|
1733 | Elf_Internal_Sym *sym;
|
---|
1734 | {
|
---|
1735 | if (h != NULL)
|
---|
1736 | {
|
---|
1737 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
|
---|
1738 | {
|
---|
1739 | case R_PARISC_GNU_VTINHERIT:
|
---|
1740 | case R_PARISC_GNU_VTENTRY:
|
---|
1741 | break;
|
---|
1742 |
|
---|
1743 | default:
|
---|
1744 | switch (h->root.type)
|
---|
1745 | {
|
---|
1746 | case bfd_link_hash_defined:
|
---|
1747 | case bfd_link_hash_defweak:
|
---|
1748 | return h->root.u.def.section;
|
---|
1749 |
|
---|
1750 | case bfd_link_hash_common:
|
---|
1751 | return h->root.u.c.p->section;
|
---|
1752 |
|
---|
1753 | default:
|
---|
1754 | break;
|
---|
1755 | }
|
---|
1756 | }
|
---|
1757 | }
|
---|
1758 | else
|
---|
1759 | {
|
---|
1760 | if (!(elf_bad_symtab (abfd)
|
---|
1761 | && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
|
---|
1762 | && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
|
---|
1763 | && sym->st_shndx != SHN_COMMON))
|
---|
1764 | {
|
---|
1765 | return bfd_section_from_elf_index (abfd, sym->st_shndx);
|
---|
1766 | }
|
---|
1767 | }
|
---|
1768 |
|
---|
1769 | return NULL;
|
---|
1770 | }
|
---|
1771 |
|
---|
1772 | /* Update the got and plt entry reference counts for the section being
|
---|
1773 | removed. */
|
---|
1774 |
|
---|
1775 | static boolean
|
---|
1776 | elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
|
---|
1777 | bfd *abfd;
|
---|
1778 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1779 | asection *sec;
|
---|
1780 | const Elf_Internal_Rela *relocs;
|
---|
1781 | {
|
---|
1782 | Elf_Internal_Shdr *symtab_hdr;
|
---|
1783 | struct elf_link_hash_entry **sym_hashes;
|
---|
1784 | bfd_signed_vma *local_got_refcounts;
|
---|
1785 | bfd_signed_vma *local_plt_refcounts;
|
---|
1786 | const Elf_Internal_Rela *rel, *relend;
|
---|
1787 | unsigned long r_symndx;
|
---|
1788 | struct elf_link_hash_entry *h;
|
---|
1789 | struct elf32_hppa_link_hash_table *hplink;
|
---|
1790 | bfd *dynobj;
|
---|
1791 |
|
---|
1792 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
---|
1793 | sym_hashes = elf_sym_hashes (abfd);
|
---|
1794 | local_got_refcounts = elf_local_got_refcounts (abfd);
|
---|
1795 | local_plt_refcounts = local_got_refcounts;
|
---|
1796 | if (local_plt_refcounts != NULL)
|
---|
1797 | local_plt_refcounts += symtab_hdr->sh_info;
|
---|
1798 | hplink = hppa_link_hash_table (info);
|
---|
1799 | dynobj = hplink->root.dynobj;
|
---|
1800 | if (dynobj == NULL)
|
---|
1801 | return true;
|
---|
1802 |
|
---|
1803 | relend = relocs + sec->reloc_count;
|
---|
1804 | for (rel = relocs; rel < relend; rel++)
|
---|
1805 | switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
|
---|
1806 | {
|
---|
1807 | case R_PARISC_DLTIND14F:
|
---|
1808 | case R_PARISC_DLTIND14R:
|
---|
1809 | case R_PARISC_DLTIND21L:
|
---|
1810 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
1811 | if (r_symndx >= symtab_hdr->sh_info)
|
---|
1812 | {
|
---|
1813 | h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
---|
1814 | if (h->got.refcount > 0)
|
---|
1815 | h->got.refcount -= 1;
|
---|
1816 | }
|
---|
1817 | else if (local_got_refcounts != NULL)
|
---|
1818 | {
|
---|
1819 | if (local_got_refcounts[r_symndx] > 0)
|
---|
1820 | local_got_refcounts[r_symndx] -= 1;
|
---|
1821 | }
|
---|
1822 | break;
|
---|
1823 |
|
---|
1824 | case R_PARISC_PCREL12F:
|
---|
1825 | case R_PARISC_PCREL17C:
|
---|
1826 | case R_PARISC_PCREL17F:
|
---|
1827 | case R_PARISC_PCREL22F:
|
---|
1828 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
1829 | if (r_symndx >= symtab_hdr->sh_info)
|
---|
1830 | {
|
---|
1831 | h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
---|
1832 | if (h->plt.refcount > 0)
|
---|
1833 | h->plt.refcount -= 1;
|
---|
1834 | }
|
---|
1835 | break;
|
---|
1836 |
|
---|
1837 | case R_PARISC_PLABEL14R:
|
---|
1838 | case R_PARISC_PLABEL21L:
|
---|
1839 | case R_PARISC_PLABEL32:
|
---|
1840 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
1841 | if (r_symndx >= symtab_hdr->sh_info)
|
---|
1842 | {
|
---|
1843 | h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
---|
1844 | if (h->plt.refcount > 0)
|
---|
1845 | h->plt.refcount -= 1;
|
---|
1846 | }
|
---|
1847 | else if (local_plt_refcounts != NULL)
|
---|
1848 | {
|
---|
1849 | if (local_plt_refcounts[r_symndx] > 0)
|
---|
1850 | local_plt_refcounts[r_symndx] -= 1;
|
---|
1851 | }
|
---|
1852 | break;
|
---|
1853 |
|
---|
1854 | default:
|
---|
1855 | break;
|
---|
1856 | }
|
---|
1857 |
|
---|
1858 | return true;
|
---|
1859 | }
|
---|
1860 |
|
---|
1861 | /* Our own version of hide_symbol, so that we can keep plt entries for
|
---|
1862 | plabels. */
|
---|
1863 |
|
---|
1864 | static void
|
---|
1865 | elf32_hppa_hide_symbol (info, h)
|
---|
1866 | struct bfd_link_info *info ATTRIBUTE_UNUSED;
|
---|
1867 | struct elf_link_hash_entry *h;
|
---|
1868 | {
|
---|
1869 | if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
|
---|
1870 | h->dynindx = -1;
|
---|
1871 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
|
---|
1872 | {
|
---|
1873 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
1874 | h->plt.offset = (bfd_vma) -1;
|
---|
1875 | }
|
---|
1876 | }
|
---|
1877 |
|
---|
1878 | /* This is the condition under which elf32_hppa_finish_dynamic_symbol
|
---|
1879 | will be called from elflink.h. If elflink.h doesn't call our
|
---|
1880 | finish_dynamic_symbol routine, we'll need to do something about
|
---|
1881 | initializing any .plt and .got entries in elf32_hppa_relocate_section. */
|
---|
1882 | #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
|
---|
1883 | ((DYN) \
|
---|
1884 | && ((INFO)->shared \
|
---|
1885 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
|
---|
1886 | && ((H)->dynindx != -1 \
|
---|
1887 | || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
|
---|
1888 |
|
---|
1889 | /* Adjust a symbol defined by a dynamic object and referenced by a
|
---|
1890 | regular object. The current definition is in some section of the
|
---|
1891 | dynamic object, but we're not including those sections. We have to
|
---|
1892 | change the definition to something the rest of the link can
|
---|
1893 | understand. */
|
---|
1894 |
|
---|
1895 | static boolean
|
---|
1896 | elf32_hppa_adjust_dynamic_symbol (info, h)
|
---|
1897 | struct bfd_link_info *info;
|
---|
1898 | struct elf_link_hash_entry *h;
|
---|
1899 | {
|
---|
1900 | bfd *dynobj;
|
---|
1901 | struct elf32_hppa_link_hash_table *hplink;
|
---|
1902 | asection *s;
|
---|
1903 |
|
---|
1904 | hplink = hppa_link_hash_table (info);
|
---|
1905 | dynobj = hplink->root.dynobj;
|
---|
1906 |
|
---|
1907 | /* If this is a function, put it in the procedure linkage table. We
|
---|
1908 | will fill in the contents of the procedure linkage table later,
|
---|
1909 | when we know the address of the .got section. */
|
---|
1910 | if (h->type == STT_FUNC
|
---|
1911 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
|
---|
1912 | {
|
---|
1913 | if (!info->shared
|
---|
1914 | && h->plt.refcount > 0
|
---|
1915 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
---|
1916 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
|
---|
1917 | {
|
---|
1918 | ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
|
---|
1919 | }
|
---|
1920 |
|
---|
1921 | if (h->plt.refcount <= 0
|
---|
1922 | || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
---|
1923 | && h->root.type != bfd_link_hash_defweak
|
---|
1924 | && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel
|
---|
1925 | && (!info->shared || info->symbolic)))
|
---|
1926 | {
|
---|
1927 | /* The .plt entry is not needed when:
|
---|
1928 | a) Garbage collection has removed all references to the
|
---|
1929 | symbol, or
|
---|
1930 | b) We know for certain the symbol is defined in this
|
---|
1931 | object, and it's not a weak definition, nor is the symbol
|
---|
1932 | used by a plabel relocation. Either this object is the
|
---|
1933 | application or we are doing a shared symbolic link. */
|
---|
1934 |
|
---|
1935 | /* As a special sop to the hppa ABI, we keep a .plt entry
|
---|
1936 | for functions in sections containing PIC code. */
|
---|
1937 | if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call)
|
---|
1938 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
|
---|
1939 | else
|
---|
1940 | {
|
---|
1941 | h->plt.offset = (bfd_vma) -1;
|
---|
1942 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
1943 | return true;
|
---|
1944 | }
|
---|
1945 | }
|
---|
1946 |
|
---|
1947 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
|
---|
1948 | {
|
---|
1949 | /* Make sure this symbol is output as a dynamic symbol. */
|
---|
1950 | if (h->dynindx == -1
|
---|
1951 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
---|
1952 | {
|
---|
1953 | if (! bfd_elf32_link_record_dynamic_symbol (info, h))
|
---|
1954 | return false;
|
---|
1955 | }
|
---|
1956 | }
|
---|
1957 |
|
---|
1958 | return true;
|
---|
1959 | }
|
---|
1960 |
|
---|
1961 | /* If this is a weak symbol, and there is a real definition, the
|
---|
1962 | processor independent code will have arranged for us to see the
|
---|
1963 | real definition first, and we can just use the same value. */
|
---|
1964 | if (h->weakdef != NULL)
|
---|
1965 | {
|
---|
1966 | if (h->weakdef->root.type != bfd_link_hash_defined
|
---|
1967 | && h->weakdef->root.type != bfd_link_hash_defweak)
|
---|
1968 | abort ();
|
---|
1969 | h->root.u.def.section = h->weakdef->root.u.def.section;
|
---|
1970 | h->root.u.def.value = h->weakdef->root.u.def.value;
|
---|
1971 | return true;
|
---|
1972 | }
|
---|
1973 |
|
---|
1974 | /* This is a reference to a symbol defined by a dynamic object which
|
---|
1975 | is not a function. */
|
---|
1976 |
|
---|
1977 | /* If we are creating a shared library, we must presume that the
|
---|
1978 | only references to the symbol are via the global offset table.
|
---|
1979 | For such cases we need not do anything here; the relocations will
|
---|
1980 | be handled correctly by relocate_section. */
|
---|
1981 | if (info->shared)
|
---|
1982 | return true;
|
---|
1983 |
|
---|
1984 | /* If there are no references to this symbol that do not use the
|
---|
1985 | GOT, we don't need to generate a copy reloc. */
|
---|
1986 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
|
---|
1987 | return true;
|
---|
1988 |
|
---|
1989 | /* We must allocate the symbol in our .dynbss section, which will
|
---|
1990 | become part of the .bss section of the executable. There will be
|
---|
1991 | an entry for this symbol in the .dynsym section. The dynamic
|
---|
1992 | object will contain position independent code, so all references
|
---|
1993 | from the dynamic object to this symbol will go through the global
|
---|
1994 | offset table. The dynamic linker will use the .dynsym entry to
|
---|
1995 | determine the address it must put in the global offset table, so
|
---|
1996 | both the dynamic object and the regular object will refer to the
|
---|
1997 | same memory location for the variable. */
|
---|
1998 |
|
---|
1999 | s = hplink->sdynbss;
|
---|
2000 |
|
---|
2001 | /* We must generate a COPY reloc to tell the dynamic linker to
|
---|
2002 | copy the initial value out of the dynamic object and into the
|
---|
2003 | runtime process image. We need to remember the offset into the
|
---|
2004 | .rela.bss section we are going to use. */
|
---|
2005 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
---|
2006 | {
|
---|
2007 | asection *srel;
|
---|
2008 |
|
---|
2009 | srel = hplink->srelbss;
|
---|
2010 | srel->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2011 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
|
---|
2012 | }
|
---|
2013 |
|
---|
2014 | {
|
---|
2015 | /* We need to figure out the alignment required for this symbol. I
|
---|
2016 | have no idea how other ELF linkers handle this. */
|
---|
2017 | unsigned int power_of_two;
|
---|
2018 |
|
---|
2019 | power_of_two = bfd_log2 (h->size);
|
---|
2020 | if (power_of_two > 3)
|
---|
2021 | power_of_two = 3;
|
---|
2022 |
|
---|
2023 | /* Apply the required alignment. */
|
---|
2024 | s->_raw_size = BFD_ALIGN (s->_raw_size,
|
---|
2025 | (bfd_size_type) (1 << power_of_two));
|
---|
2026 | if (power_of_two > bfd_get_section_alignment (dynobj, s))
|
---|
2027 | {
|
---|
2028 | if (! bfd_set_section_alignment (dynobj, s, power_of_two))
|
---|
2029 | return false;
|
---|
2030 | }
|
---|
2031 | }
|
---|
2032 | /* Define the symbol as being at this point in the section. */
|
---|
2033 | h->root.u.def.section = s;
|
---|
2034 | h->root.u.def.value = s->_raw_size;
|
---|
2035 |
|
---|
2036 | /* Increment the section size to make room for the symbol. */
|
---|
2037 | s->_raw_size += h->size;
|
---|
2038 |
|
---|
2039 | return true;
|
---|
2040 | }
|
---|
2041 |
|
---|
2042 | /* Called via elf_link_hash_traverse to create .plt entries for an
|
---|
2043 | application that uses statically linked PIC functions. Similar to
|
---|
2044 | the first part of elf32_hppa_adjust_dynamic_symbol. */
|
---|
2045 |
|
---|
2046 | static boolean
|
---|
2047 | hppa_handle_PIC_calls (h, inf)
|
---|
2048 | struct elf_link_hash_entry *h;
|
---|
2049 | PTR inf ATTRIBUTE_UNUSED;
|
---|
2050 | {
|
---|
2051 | if (! (h->plt.refcount > 0
|
---|
2052 | && (h->root.type == bfd_link_hash_defined
|
---|
2053 | || h->root.type == bfd_link_hash_defweak)
|
---|
2054 | && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0))
|
---|
2055 | {
|
---|
2056 | h->plt.offset = (bfd_vma) -1;
|
---|
2057 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
2058 | return true;
|
---|
2059 | }
|
---|
2060 |
|
---|
2061 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
|
---|
2062 | ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
|
---|
2063 | ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
|
---|
2064 |
|
---|
2065 | return true;
|
---|
2066 | }
|
---|
2067 |
|
---|
2068 | /* Allocate space in .plt, .got and associated reloc sections for
|
---|
2069 | global syms. */
|
---|
2070 |
|
---|
2071 | static boolean
|
---|
2072 | allocate_plt_and_got (h, inf)
|
---|
2073 | struct elf_link_hash_entry *h;
|
---|
2074 | PTR inf;
|
---|
2075 | {
|
---|
2076 | struct bfd_link_info *info;
|
---|
2077 | struct elf32_hppa_link_hash_table *hplink;
|
---|
2078 | asection *s;
|
---|
2079 |
|
---|
2080 | if (h->root.type == bfd_link_hash_indirect
|
---|
2081 | || h->root.type == bfd_link_hash_warning)
|
---|
2082 | return true;
|
---|
2083 |
|
---|
2084 | info = (struct bfd_link_info *) inf;
|
---|
2085 | hplink = hppa_link_hash_table (info);
|
---|
2086 | if ((hplink->root.dynamic_sections_created
|
---|
2087 | && h->plt.refcount > 0)
|
---|
2088 | || ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
|
---|
2089 | {
|
---|
2090 | /* Make an entry in the .plt section. */
|
---|
2091 | s = hplink->splt;
|
---|
2092 | h->plt.offset = s->_raw_size;
|
---|
2093 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
|
---|
2094 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel
|
---|
2095 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
|
---|
2096 | {
|
---|
2097 | /* Add some extra space for the dynamic linker to use. */
|
---|
2098 | s->_raw_size += PLABEL_PLT_ENTRY_SIZE;
|
---|
2099 | }
|
---|
2100 | else
|
---|
2101 | s->_raw_size += PLT_ENTRY_SIZE;
|
---|
2102 |
|
---|
2103 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call
|
---|
2104 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
|
---|
2105 | {
|
---|
2106 | /* We also need to make an entry in the .rela.plt section. */
|
---|
2107 | hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2108 | hplink->need_plt_stub = 1;
|
---|
2109 | }
|
---|
2110 | }
|
---|
2111 | else
|
---|
2112 | {
|
---|
2113 | h->plt.offset = (bfd_vma) -1;
|
---|
2114 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
|
---|
2115 | }
|
---|
2116 |
|
---|
2117 | if (h->got.refcount > 0)
|
---|
2118 | {
|
---|
2119 | boolean dyn;
|
---|
2120 |
|
---|
2121 | s = hplink->sgot;
|
---|
2122 | h->got.offset = s->_raw_size;
|
---|
2123 | s->_raw_size += GOT_ENTRY_SIZE;
|
---|
2124 | dyn = hplink->root.dynamic_sections_created;
|
---|
2125 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
|
---|
2126 | hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2127 | }
|
---|
2128 | else
|
---|
2129 | h->got.offset = (bfd_vma) -1;
|
---|
2130 |
|
---|
2131 | return true;
|
---|
2132 | }
|
---|
2133 |
|
---|
2134 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \
|
---|
2135 | || RELATIVE_DYNAMIC_RELOCS)
|
---|
2136 | /* This function is called via elf_link_hash_traverse to discard space
|
---|
2137 | we allocated for relocs that it turned out we didn't need. */
|
---|
2138 |
|
---|
2139 | static boolean
|
---|
2140 | hppa_discard_copies (h, inf)
|
---|
2141 | struct elf_link_hash_entry *h;
|
---|
2142 | PTR inf;
|
---|
2143 | {
|
---|
2144 | struct elf32_hppa_dyn_reloc_entry *s;
|
---|
2145 | struct elf32_hppa_link_hash_entry *eh;
|
---|
2146 | struct bfd_link_info *info;
|
---|
2147 |
|
---|
2148 | eh = (struct elf32_hppa_link_hash_entry *) h;
|
---|
2149 | info = (struct bfd_link_info *) inf;
|
---|
2150 |
|
---|
2151 | #if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT
|
---|
2152 | /* Handle the stub reloc case. If we have a plt entry for the
|
---|
2153 | function, we won't be needing long branch stubs. s->count will
|
---|
2154 | only be zero for stub relocs, which provides a handy way of
|
---|
2155 | flagging these relocs, and means we need do nothing special for
|
---|
2156 | the forced local and symbolic link case. */
|
---|
2157 | if (eh->stub_reloc_sec != NULL
|
---|
2158 | && eh->elf.plt.offset != (bfd_vma) -1)
|
---|
2159 | {
|
---|
2160 | for (s = eh->reloc_entries; s != NULL; s = s->next)
|
---|
2161 | if (s->count == 0)
|
---|
2162 | s->section->_raw_size -= sizeof (Elf32_External_Rela);
|
---|
2163 | }
|
---|
2164 | #endif
|
---|
2165 |
|
---|
2166 | #if RELATIVE_DYNAMIC_RELOCS
|
---|
2167 | /* If a symbol has been forced local or we have found a regular
|
---|
2168 | definition for the symbolic link case, then we won't be needing
|
---|
2169 | any relocs. */
|
---|
2170 | if (eh->elf.dynindx == -1
|
---|
2171 | || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
|
---|
2172 | && !is_absolute_reloc (r_type)
|
---|
2173 | && info->symbolic))
|
---|
2174 | {
|
---|
2175 | for (s = eh->reloc_entries; s != NULL; s = s->next)
|
---|
2176 | s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela);
|
---|
2177 | }
|
---|
2178 | #endif
|
---|
2179 |
|
---|
2180 | return true;
|
---|
2181 | }
|
---|
2182 | #endif
|
---|
2183 |
|
---|
2184 | /* This function is called via elf_link_hash_traverse to force
|
---|
2185 | millicode symbols local so they do not end up as globals in the
|
---|
2186 | dynamic symbol table. We ought to be able to do this in
|
---|
2187 | adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
|
---|
2188 | for all dynamic symbols. Arguably, this is a bug in
|
---|
2189 | elf_adjust_dynamic_symbol. */
|
---|
2190 |
|
---|
2191 | static boolean
|
---|
2192 | clobber_millicode_symbols (h, info)
|
---|
2193 | struct elf_link_hash_entry *h;
|
---|
2194 | struct bfd_link_info *info;
|
---|
2195 | {
|
---|
2196 | /* We only want to remove these from the dynamic symbol table.
|
---|
2197 | Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */
|
---|
2198 | if (h->type == STT_PARISC_MILLI)
|
---|
2199 | {
|
---|
2200 | unsigned short oldflags = h->elf_link_hash_flags;
|
---|
2201 | h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
|
---|
2202 | elf32_hppa_hide_symbol (info, h);
|
---|
2203 | h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL;
|
---|
2204 | h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL;
|
---|
2205 | }
|
---|
2206 | return true;
|
---|
2207 | }
|
---|
2208 |
|
---|
2209 | /* Set the sizes of the dynamic sections. */
|
---|
2210 |
|
---|
2211 | static boolean
|
---|
2212 | elf32_hppa_size_dynamic_sections (output_bfd, info)
|
---|
2213 | bfd *output_bfd;
|
---|
2214 | struct bfd_link_info *info;
|
---|
2215 | {
|
---|
2216 | struct elf32_hppa_link_hash_table *hplink;
|
---|
2217 | bfd *dynobj;
|
---|
2218 | asection *s;
|
---|
2219 | boolean relocs;
|
---|
2220 | boolean reltext;
|
---|
2221 |
|
---|
2222 | hplink = hppa_link_hash_table (info);
|
---|
2223 | dynobj = hplink->root.dynobj;
|
---|
2224 | if (dynobj == NULL)
|
---|
2225 | abort ();
|
---|
2226 |
|
---|
2227 | if (hplink->root.dynamic_sections_created)
|
---|
2228 | {
|
---|
2229 | bfd *i;
|
---|
2230 |
|
---|
2231 | /* Set the contents of the .interp section to the interpreter. */
|
---|
2232 | if (! info->shared)
|
---|
2233 | {
|
---|
2234 | s = bfd_get_section_by_name (dynobj, ".interp");
|
---|
2235 | if (s == NULL)
|
---|
2236 | abort ();
|
---|
2237 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
|
---|
2238 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
---|
2239 | }
|
---|
2240 |
|
---|
2241 | /* Force millicode symbols local. */
|
---|
2242 | elf_link_hash_traverse (&hplink->root,
|
---|
2243 | clobber_millicode_symbols,
|
---|
2244 | info);
|
---|
2245 |
|
---|
2246 | /* Set up .got and .plt offsets for local syms. */
|
---|
2247 | for (i = info->input_bfds; i; i = i->link_next)
|
---|
2248 | {
|
---|
2249 | bfd_signed_vma *local_got;
|
---|
2250 | bfd_signed_vma *end_local_got;
|
---|
2251 | bfd_signed_vma *local_plt;
|
---|
2252 | bfd_signed_vma *end_local_plt;
|
---|
2253 | bfd_size_type locsymcount;
|
---|
2254 | Elf_Internal_Shdr *symtab_hdr;
|
---|
2255 | asection *srel;
|
---|
2256 |
|
---|
2257 | if (bfd_get_flavour (i) != bfd_target_elf_flavour)
|
---|
2258 | continue;
|
---|
2259 |
|
---|
2260 | local_got = elf_local_got_refcounts (i);
|
---|
2261 | if (!local_got)
|
---|
2262 | continue;
|
---|
2263 |
|
---|
2264 | symtab_hdr = &elf_tdata (i)->symtab_hdr;
|
---|
2265 | locsymcount = symtab_hdr->sh_info;
|
---|
2266 | end_local_got = local_got + locsymcount;
|
---|
2267 | s = hplink->sgot;
|
---|
2268 | srel = hplink->srelgot;
|
---|
2269 | for (; local_got < end_local_got; ++local_got)
|
---|
2270 | {
|
---|
2271 | if (*local_got > 0)
|
---|
2272 | {
|
---|
2273 | *local_got = s->_raw_size;
|
---|
2274 | s->_raw_size += GOT_ENTRY_SIZE;
|
---|
2275 | if (info->shared)
|
---|
2276 | srel->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2277 | }
|
---|
2278 | else
|
---|
2279 | *local_got = (bfd_vma) -1;
|
---|
2280 | }
|
---|
2281 |
|
---|
2282 | local_plt = end_local_got;
|
---|
2283 | end_local_plt = local_plt + locsymcount;
|
---|
2284 | s = hplink->splt;
|
---|
2285 | srel = hplink->srelplt;
|
---|
2286 | for (; local_plt < end_local_plt; ++local_plt)
|
---|
2287 | {
|
---|
2288 | if (*local_plt > 0)
|
---|
2289 | {
|
---|
2290 | *local_plt = s->_raw_size;
|
---|
2291 | s->_raw_size += PLT_ENTRY_SIZE;
|
---|
2292 | if (info->shared)
|
---|
2293 | srel->_raw_size += sizeof (Elf32_External_Rela);
|
---|
2294 | }
|
---|
2295 | else
|
---|
2296 | *local_plt = (bfd_vma) -1;
|
---|
2297 | }
|
---|
2298 | }
|
---|
2299 | }
|
---|
2300 | else
|
---|
2301 | {
|
---|
2302 | /* Run through the function symbols, looking for any that are
|
---|
2303 | PIC, and allocate space for the necessary .plt entries so
|
---|
2304 | that %r19 will be set up. */
|
---|
2305 | if (! info->shared)
|
---|
2306 | elf_link_hash_traverse (&hplink->root,
|
---|
2307 | hppa_handle_PIC_calls,
|
---|
2308 | info);
|
---|
2309 | }
|
---|
2310 |
|
---|
2311 | /* Allocate global sym .plt and .got entries. */
|
---|
2312 | elf_link_hash_traverse (&hplink->root,
|
---|
2313 | allocate_plt_and_got,
|
---|
2314 | info);
|
---|
2315 |
|
---|
2316 | #if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \
|
---|
2317 | || RELATIVE_DYNAMIC_RELOCS)
|
---|
2318 | /* If this is a -Bsymbolic shared link, then we need to discard all
|
---|
2319 | relocs against symbols defined in a regular object. We also need
|
---|
2320 | to lose relocs we've allocated for long branch stubs if we know
|
---|
2321 | we won't be generating a stub. */
|
---|
2322 | if (info->shared)
|
---|
2323 | elf_link_hash_traverse (&hplink->root,
|
---|
2324 | hppa_discard_copies,
|
---|
2325 | info);
|
---|
2326 | #endif
|
---|
2327 |
|
---|
2328 | /* The check_relocs and adjust_dynamic_symbol entry points have
|
---|
2329 | determined the sizes of the various dynamic sections. Allocate
|
---|
2330 | memory for them. */
|
---|
2331 | relocs = false;
|
---|
2332 | reltext = false;
|
---|
2333 | for (s = dynobj->sections; s != NULL; s = s->next)
|
---|
2334 | {
|
---|
2335 | const char *name;
|
---|
2336 |
|
---|
2337 | if ((s->flags & SEC_LINKER_CREATED) == 0)
|
---|
2338 | continue;
|
---|
2339 |
|
---|
2340 | /* It's OK to base decisions on the section name, because none
|
---|
2341 | of the dynobj section names depend upon the input files. */
|
---|
2342 | name = bfd_get_section_name (dynobj, s);
|
---|
2343 |
|
---|
2344 | if (strncmp (name, ".rela", 5) == 0)
|
---|
2345 | {
|
---|
2346 | if (s->_raw_size != 0)
|
---|
2347 | {
|
---|
2348 | asection *target;
|
---|
2349 | const char *outname;
|
---|
2350 |
|
---|
2351 | /* Remember whether there are any reloc sections other
|
---|
2352 | than .rela.plt. */
|
---|
2353 | if (strcmp (name+5, ".plt") != 0)
|
---|
2354 | relocs = true;
|
---|
2355 |
|
---|
2356 | /* If this relocation section applies to a read only
|
---|
2357 | section, then we probably need a DT_TEXTREL entry. */
|
---|
2358 | outname = bfd_get_section_name (output_bfd,
|
---|
2359 | s->output_section);
|
---|
2360 | target = bfd_get_section_by_name (output_bfd, outname + 5);
|
---|
2361 | if (target != NULL
|
---|
2362 | && (target->flags & SEC_READONLY) != 0
|
---|
2363 | && (target->flags & SEC_ALLOC) != 0)
|
---|
2364 | reltext = true;
|
---|
2365 |
|
---|
2366 | /* We use the reloc_count field as a counter if we need
|
---|
2367 | to copy relocs into the output file. */
|
---|
2368 | s->reloc_count = 0;
|
---|
2369 | }
|
---|
2370 | }
|
---|
2371 | else if (strcmp (name, ".plt") == 0)
|
---|
2372 | {
|
---|
2373 | if (hplink->need_plt_stub)
|
---|
2374 | {
|
---|
2375 | /* Make space for the plt stub at the end of the .plt
|
---|
2376 | section. We want this stub right at the end, up
|
---|
2377 | against the .got section. */
|
---|
2378 | int gotalign = bfd_section_alignment (dynobj, hplink->sgot);
|
---|
2379 | int pltalign = bfd_section_alignment (dynobj, s);
|
---|
2380 | bfd_size_type mask;
|
---|
2381 |
|
---|
2382 | if (gotalign > pltalign)
|
---|
2383 | bfd_set_section_alignment (dynobj, s, gotalign);
|
---|
2384 | mask = ((bfd_size_type) 1 << gotalign) - 1;
|
---|
2385 | s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask;
|
---|
2386 | }
|
---|
2387 | }
|
---|
2388 | else if (strcmp (name, ".got") == 0)
|
---|
2389 | ;
|
---|
2390 | else
|
---|
2391 | {
|
---|
2392 | /* It's not one of our sections, so don't allocate space. */
|
---|
2393 | continue;
|
---|
2394 | }
|
---|
2395 |
|
---|
2396 | if (s->_raw_size == 0)
|
---|
2397 | {
|
---|
2398 | /* If we don't need this section, strip it from the
|
---|
2399 | output file. This is mostly to handle .rela.bss and
|
---|
2400 | .rela.plt. We must create both sections in
|
---|
2401 | create_dynamic_sections, because they must be created
|
---|
2402 | before the linker maps input sections to output
|
---|
2403 | sections. The linker does that before
|
---|
2404 | adjust_dynamic_symbol is called, and it is that
|
---|
2405 | function which decides whether anything needs to go
|
---|
2406 | into these sections. */
|
---|
2407 | _bfd_strip_section_from_output (info, s);
|
---|
2408 | continue;
|
---|
2409 | }
|
---|
2410 |
|
---|
2411 | /* Allocate memory for the section contents. Zero it, because
|
---|
2412 | we may not fill in all the reloc sections. */
|
---|
2413 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
|
---|
2414 | if (s->contents == NULL && s->_raw_size != 0)
|
---|
2415 | return false;
|
---|
2416 | }
|
---|
2417 |
|
---|
2418 | if (hplink->root.dynamic_sections_created)
|
---|
2419 | {
|
---|
2420 | /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
|
---|
2421 | actually has nothing to do with the PLT, it is how we
|
---|
2422 | communicate the LTP value of a load module to the dynamic
|
---|
2423 | linker. */
|
---|
2424 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
|
---|
2425 | return false;
|
---|
2426 |
|
---|
2427 | /* Add some entries to the .dynamic section. We fill in the
|
---|
2428 | values later, in elf32_hppa_finish_dynamic_sections, but we
|
---|
2429 | must add the entries now so that we get the correct size for
|
---|
2430 | the .dynamic section. The DT_DEBUG entry is filled in by the
|
---|
2431 | dynamic linker and used by the debugger. */
|
---|
2432 | if (! info->shared)
|
---|
2433 | {
|
---|
2434 | if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
|
---|
2435 | return false;
|
---|
2436 | }
|
---|
2437 |
|
---|
2438 | if (hplink->srelplt->_raw_size != 0)
|
---|
2439 | {
|
---|
2440 | if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
|
---|
2441 | || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
|
---|
2442 | || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
|
---|
2443 | return false;
|
---|
2444 | }
|
---|
2445 |
|
---|
2446 | if (relocs)
|
---|
2447 | {
|
---|
2448 | if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
|
---|
2449 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
|
---|
2450 | || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
|
---|
2451 | sizeof (Elf32_External_Rela)))
|
---|
2452 | return false;
|
---|
2453 | }
|
---|
2454 |
|
---|
2455 | if (reltext)
|
---|
2456 | {
|
---|
2457 | if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
|
---|
2458 | return false;
|
---|
2459 | info->flags |= DF_TEXTREL;
|
---|
2460 | }
|
---|
2461 | }
|
---|
2462 |
|
---|
2463 | return true;
|
---|
2464 | }
|
---|
2465 |
|
---|
2466 | /* External entry points for sizing and building linker stubs. */
|
---|
2467 |
|
---|
2468 | /* Determine and set the size of the stub section for a final link.
|
---|
2469 |
|
---|
2470 | The basic idea here is to examine all the relocations looking for
|
---|
2471 | PC-relative calls to a target that is unreachable with a "bl"
|
---|
2472 | instruction. */
|
---|
2473 |
|
---|
2474 | boolean
|
---|
2475 | elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size,
|
---|
2476 | add_stub_section, layout_sections_again)
|
---|
2477 | bfd *output_bfd;
|
---|
2478 | bfd *stub_bfd;
|
---|
2479 | struct bfd_link_info *info;
|
---|
2480 | boolean multi_subspace;
|
---|
2481 | bfd_signed_vma group_size;
|
---|
2482 | asection * (*add_stub_section) PARAMS ((const char *, asection *));
|
---|
2483 | void (*layout_sections_again) PARAMS ((void));
|
---|
2484 | {
|
---|
2485 | bfd *input_bfd;
|
---|
2486 | asection *section;
|
---|
2487 | asection **input_list, **list;
|
---|
2488 | Elf_Internal_Sym *local_syms, **all_local_syms;
|
---|
2489 | unsigned int bfd_indx, bfd_count;
|
---|
2490 | int top_id, top_index;
|
---|
2491 | struct elf32_hppa_link_hash_table *hplink;
|
---|
2492 | bfd_size_type stub_group_size;
|
---|
2493 | boolean stubs_always_before_branch;
|
---|
2494 | boolean stub_changed = 0;
|
---|
2495 | boolean ret = 0;
|
---|
2496 |
|
---|
2497 | hplink = hppa_link_hash_table (info);
|
---|
2498 |
|
---|
2499 | /* Stash our params away. */
|
---|
2500 | hplink->stub_bfd = stub_bfd;
|
---|
2501 | hplink->multi_subspace = multi_subspace;
|
---|
2502 | hplink->add_stub_section = add_stub_section;
|
---|
2503 | hplink->layout_sections_again = layout_sections_again;
|
---|
2504 | stubs_always_before_branch = group_size < 0;
|
---|
2505 | if (group_size < 0)
|
---|
2506 | stub_group_size = -group_size;
|
---|
2507 | else
|
---|
2508 | stub_group_size = group_size;
|
---|
2509 | if (stub_group_size == 1)
|
---|
2510 | {
|
---|
2511 | /* Default values. */
|
---|
2512 | stub_group_size = 8000000;
|
---|
2513 | if (hplink->has_17bit_branch || hplink->multi_subspace)
|
---|
2514 | stub_group_size = 250000;
|
---|
2515 | if (hplink->has_12bit_branch)
|
---|
2516 | stub_group_size = 7812;
|
---|
2517 | }
|
---|
2518 |
|
---|
2519 | /* Count the number of input BFDs and find the top input section id. */
|
---|
2520 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
|
---|
2521 | input_bfd != NULL;
|
---|
2522 | input_bfd = input_bfd->link_next)
|
---|
2523 | {
|
---|
2524 | bfd_count += 1;
|
---|
2525 | for (section = input_bfd->sections;
|
---|
2526 | section != NULL;
|
---|
2527 | section = section->next)
|
---|
2528 | {
|
---|
2529 | if (top_id < section->id)
|
---|
2530 | top_id = section->id;
|
---|
2531 | }
|
---|
2532 | }
|
---|
2533 |
|
---|
2534 | hplink->stub_group
|
---|
2535 | = (struct map_stub *) bfd_zmalloc (sizeof (struct map_stub) * (top_id + 1));
|
---|
2536 | if (hplink->stub_group == NULL)
|
---|
2537 | return false;
|
---|
2538 |
|
---|
2539 | /* Make a list of input sections for each output section included in
|
---|
2540 | the link.
|
---|
2541 |
|
---|
2542 | We can't use output_bfd->section_count here to find the top output
|
---|
2543 | section index as some sections may have been removed, and
|
---|
2544 | _bfd_strip_section_from_output doesn't renumber the indices. */
|
---|
2545 | for (section = output_bfd->sections, top_index = 0;
|
---|
2546 | section != NULL;
|
---|
2547 | section = section->next)
|
---|
2548 | {
|
---|
2549 | if (top_index < section->index)
|
---|
2550 | top_index = section->index;
|
---|
2551 | }
|
---|
2552 |
|
---|
2553 | input_list
|
---|
2554 | = (asection **) bfd_malloc (sizeof (asection *) * (top_index + 1));
|
---|
2555 | if (input_list == NULL)
|
---|
2556 | return false;
|
---|
2557 |
|
---|
2558 | /* For sections we aren't interested in, mark their entries with a
|
---|
2559 | value we can check later. */
|
---|
2560 | list = input_list + top_index;
|
---|
2561 | do
|
---|
2562 | *list = bfd_abs_section_ptr;
|
---|
2563 | while (list-- != input_list);
|
---|
2564 |
|
---|
2565 | for (section = output_bfd->sections;
|
---|
2566 | section != NULL;
|
---|
2567 | section = section->next)
|
---|
2568 | {
|
---|
2569 | if ((section->flags & SEC_CODE) != 0)
|
---|
2570 | input_list[section->index] = NULL;
|
---|
2571 | }
|
---|
2572 |
|
---|
2573 | /* Now actually build the lists. */
|
---|
2574 | for (input_bfd = info->input_bfds;
|
---|
2575 | input_bfd != NULL;
|
---|
2576 | input_bfd = input_bfd->link_next)
|
---|
2577 | {
|
---|
2578 | for (section = input_bfd->sections;
|
---|
2579 | section != NULL;
|
---|
2580 | section = section->next)
|
---|
2581 | {
|
---|
2582 | if (section->output_section != NULL
|
---|
2583 | && section->output_section->owner == output_bfd
|
---|
2584 | && section->output_section->index <= top_index)
|
---|
2585 | {
|
---|
2586 | list = input_list + section->output_section->index;
|
---|
2587 | if (*list != bfd_abs_section_ptr)
|
---|
2588 | {
|
---|
2589 | /* Steal the link_sec pointer for our list. */
|
---|
2590 | #define PREV_SEC(sec) (hplink->stub_group[(sec)->id].link_sec)
|
---|
2591 | /* This happens to make the list in reverse order,
|
---|
2592 | which is what we want. */
|
---|
2593 | PREV_SEC (section) = *list;
|
---|
2594 | *list = section;
|
---|
2595 | }
|
---|
2596 | }
|
---|
2597 | }
|
---|
2598 | }
|
---|
2599 |
|
---|
2600 | /* See whether we can group stub sections together. Grouping stub
|
---|
2601 | sections may result in fewer stubs. More importantly, we need to
|
---|
2602 | put all .init* and .fini* stubs at the beginning of the .init or
|
---|
2603 | .fini output sections respectively, because glibc splits the
|
---|
2604 | _init and _fini functions into multiple parts. Putting a stub in
|
---|
2605 | the middle of a function is not a good idea. */
|
---|
2606 | list = input_list + top_index;
|
---|
2607 | do
|
---|
2608 | {
|
---|
2609 | asection *tail = *list;
|
---|
2610 | if (tail == bfd_abs_section_ptr)
|
---|
2611 | continue;
|
---|
2612 | while (tail != NULL)
|
---|
2613 | {
|
---|
2614 | asection *curr;
|
---|
2615 | asection *prev;
|
---|
2616 | bfd_size_type total;
|
---|
2617 |
|
---|
2618 | curr = tail;
|
---|
2619 | if (tail->_cooked_size)
|
---|
2620 | total = tail->_cooked_size;
|
---|
2621 | else
|
---|
2622 | total = tail->_raw_size;
|
---|
2623 | while ((prev = PREV_SEC (curr)) != NULL
|
---|
2624 | && ((total += curr->output_offset - prev->output_offset)
|
---|
2625 | < stub_group_size))
|
---|
2626 | curr = prev;
|
---|
2627 |
|
---|
2628 | /* OK, the size from the start of CURR to the end is less
|
---|
2629 | than 250000 bytes and thus can be handled by one stub
|
---|
2630 | section. (or the tail section is itself larger than
|
---|
2631 | 250000 bytes, in which case we may be toast.)
|
---|
2632 | We should really be keeping track of the total size of
|
---|
2633 | stubs added here, as stubs contribute to the final output
|
---|
2634 | section size. That's a little tricky, and this way will
|
---|
2635 | only break if stubs added total more than 12144 bytes, or
|
---|
2636 | 1518 long branch stubs. It seems unlikely for more than
|
---|
2637 | 1518 different functions to be called, especially from
|
---|
2638 | code only 250000 bytes long. */
|
---|
2639 | do
|
---|
2640 | {
|
---|
2641 | prev = PREV_SEC (tail);
|
---|
2642 | /* Set up this stub group. */
|
---|
2643 | hplink->stub_group[tail->id].link_sec = curr;
|
---|
2644 | }
|
---|
2645 | while (tail != curr && (tail = prev) != NULL);
|
---|
2646 |
|
---|
2647 | /* But wait, there's more! Input sections up to 250000
|
---|
2648 | bytes before the stub section can be handled by it too. */
|
---|
2649 | if (!stubs_always_before_branch)
|
---|
2650 | {
|
---|
2651 | total = 0;
|
---|
2652 | while (prev != NULL
|
---|
2653 | && ((total += tail->output_offset - prev->output_offset)
|
---|
2654 | < stub_group_size))
|
---|
2655 | {
|
---|
2656 | tail = prev;
|
---|
2657 | prev = PREV_SEC (tail);
|
---|
2658 | hplink->stub_group[tail->id].link_sec = curr;
|
---|
2659 | }
|
---|
2660 | }
|
---|
2661 | tail = prev;
|
---|
2662 | }
|
---|
2663 | }
|
---|
2664 | while (list-- != input_list);
|
---|
2665 | free (input_list);
|
---|
2666 | #undef PREV_SEC
|
---|
2667 |
|
---|
2668 | /* We want to read in symbol extension records only once. To do this
|
---|
2669 | we need to read in the local symbols in parallel and save them for
|
---|
2670 | later use; so hold pointers to the local symbols in an array. */
|
---|
2671 | all_local_syms
|
---|
2672 | = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *)
|
---|
2673 | * bfd_count);
|
---|
2674 | if (all_local_syms == NULL)
|
---|
2675 | return false;
|
---|
2676 |
|
---|
2677 | /* Walk over all the input BFDs, swapping in local symbols.
|
---|
2678 | If we are creating a shared library, create hash entries for the
|
---|
2679 | export stubs. */
|
---|
2680 | for (input_bfd = info->input_bfds, bfd_indx = 0;
|
---|
2681 | input_bfd != NULL;
|
---|
2682 | input_bfd = input_bfd->link_next, bfd_indx++)
|
---|
2683 | {
|
---|
2684 | Elf_Internal_Shdr *symtab_hdr;
|
---|
2685 | Elf_Internal_Sym *isym;
|
---|
2686 | Elf32_External_Sym *ext_syms, *esym, *end_sy;
|
---|
2687 |
|
---|
2688 | /* We'll need the symbol table in a second. */
|
---|
2689 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
---|
2690 | if (symtab_hdr->sh_info == 0)
|
---|
2691 | continue;
|
---|
2692 |
|
---|
2693 | /* We need an array of the local symbols attached to the input bfd.
|
---|
2694 | Unfortunately, we're going to have to read & swap them in. */
|
---|
2695 | local_syms = (Elf_Internal_Sym *)
|
---|
2696 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym));
|
---|
2697 | if (local_syms == NULL)
|
---|
2698 | {
|
---|
2699 | goto error_ret_free_local;
|
---|
2700 | }
|
---|
2701 | all_local_syms[bfd_indx] = local_syms;
|
---|
2702 | ext_syms = (Elf32_External_Sym *)
|
---|
2703 | bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym));
|
---|
2704 | if (ext_syms == NULL)
|
---|
2705 | {
|
---|
2706 | goto error_ret_free_local;
|
---|
2707 | }
|
---|
2708 |
|
---|
2709 | if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
|
---|
2710 | || (bfd_read (ext_syms, 1,
|
---|
2711 | (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)),
|
---|
2712 | input_bfd)
|
---|
2713 | != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
|
---|
2714 | {
|
---|
2715 | free (ext_syms);
|
---|
2716 | goto error_ret_free_local;
|
---|
2717 | }
|
---|
2718 |
|
---|
2719 | /* Swap the local symbols in. */
|
---|
2720 | isym = local_syms;
|
---|
2721 | esym = ext_syms;
|
---|
2722 | for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++)
|
---|
2723 | bfd_elf32_swap_symbol_in (input_bfd, esym, isym);
|
---|
2724 |
|
---|
2725 | /* Now we can free the external symbols. */
|
---|
2726 | free (ext_syms);
|
---|
2727 |
|
---|
2728 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
2729 | /* If this is a shared link, find all the stub reloc sections. */
|
---|
2730 | if (info->shared)
|
---|
2731 | for (section = input_bfd->sections;
|
---|
2732 | section != NULL;
|
---|
2733 | section = section->next)
|
---|
2734 | {
|
---|
2735 | char *name;
|
---|
2736 | asection *reloc_sec;
|
---|
2737 |
|
---|
2738 | name = bfd_malloc (strlen (section->name)
|
---|
2739 | + sizeof STUB_SUFFIX
|
---|
2740 | + 5);
|
---|
2741 | if (name == NULL)
|
---|
2742 | return false;
|
---|
2743 | sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX);
|
---|
2744 | reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name);
|
---|
2745 | hplink->stub_group[section->id].reloc_sec = reloc_sec;
|
---|
2746 | free (name);
|
---|
2747 | }
|
---|
2748 | #endif
|
---|
2749 |
|
---|
2750 | if (info->shared && hplink->multi_subspace)
|
---|
2751 | {
|
---|
2752 | struct elf_link_hash_entry **sym_hashes;
|
---|
2753 | struct elf_link_hash_entry **end_hashes;
|
---|
2754 | unsigned int symcount;
|
---|
2755 |
|
---|
2756 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|
---|
2757 | - symtab_hdr->sh_info);
|
---|
2758 | sym_hashes = elf_sym_hashes (input_bfd);
|
---|
2759 | end_hashes = sym_hashes + symcount;
|
---|
2760 |
|
---|
2761 | /* Look through the global syms for functions; We need to
|
---|
2762 | build export stubs for all globally visible functions. */
|
---|
2763 | for (; sym_hashes < end_hashes; sym_hashes++)
|
---|
2764 | {
|
---|
2765 | struct elf32_hppa_link_hash_entry *hash;
|
---|
2766 |
|
---|
2767 | hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
|
---|
2768 |
|
---|
2769 | while (hash->elf.root.type == bfd_link_hash_indirect
|
---|
2770 | || hash->elf.root.type == bfd_link_hash_warning)
|
---|
2771 | hash = ((struct elf32_hppa_link_hash_entry *)
|
---|
2772 | hash->elf.root.u.i.link);
|
---|
2773 |
|
---|
2774 | /* At this point in the link, undefined syms have been
|
---|
2775 | resolved, so we need to check that the symbol was
|
---|
2776 | defined in this BFD. */
|
---|
2777 | if ((hash->elf.root.type == bfd_link_hash_defined
|
---|
2778 | || hash->elf.root.type == bfd_link_hash_defweak)
|
---|
2779 | && hash->elf.type == STT_FUNC
|
---|
2780 | && hash->elf.root.u.def.section->output_section != NULL
|
---|
2781 | && (hash->elf.root.u.def.section->output_section->owner
|
---|
2782 | == output_bfd)
|
---|
2783 | && hash->elf.root.u.def.section->owner == input_bfd
|
---|
2784 | && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
|
---|
2785 | && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
|
---|
2786 | && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT)
|
---|
2787 | {
|
---|
2788 | asection *sec;
|
---|
2789 | const char *stub_name;
|
---|
2790 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
2791 |
|
---|
2792 | sec = hash->elf.root.u.def.section;
|
---|
2793 | stub_name = hash->elf.root.root.string;
|
---|
2794 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
|
---|
2795 | stub_name,
|
---|
2796 | false, false);
|
---|
2797 | if (stub_entry == NULL)
|
---|
2798 | {
|
---|
2799 | stub_entry = hppa_add_stub (stub_name, sec, hplink);
|
---|
2800 | if (!stub_entry)
|
---|
2801 | goto error_ret_free_local;
|
---|
2802 |
|
---|
2803 | stub_entry->target_value = hash->elf.root.u.def.value;
|
---|
2804 | stub_entry->target_section = hash->elf.root.u.def.section;
|
---|
2805 | stub_entry->stub_type = hppa_stub_export;
|
---|
2806 | stub_entry->h = hash;
|
---|
2807 | stub_changed = 1;
|
---|
2808 | }
|
---|
2809 | else
|
---|
2810 | {
|
---|
2811 | (*_bfd_error_handler) (_("%s: duplicate export stub %s"),
|
---|
2812 | bfd_get_filename (input_bfd),
|
---|
2813 | stub_name);
|
---|
2814 | }
|
---|
2815 | }
|
---|
2816 | }
|
---|
2817 | }
|
---|
2818 | }
|
---|
2819 |
|
---|
2820 | while (1)
|
---|
2821 | {
|
---|
2822 | asection *stub_sec;
|
---|
2823 |
|
---|
2824 | for (input_bfd = info->input_bfds, bfd_indx = 0;
|
---|
2825 | input_bfd != NULL;
|
---|
2826 | input_bfd = input_bfd->link_next, bfd_indx++)
|
---|
2827 | {
|
---|
2828 | Elf_Internal_Shdr *symtab_hdr;
|
---|
2829 |
|
---|
2830 | /* We'll need the symbol table in a second. */
|
---|
2831 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
---|
2832 | if (symtab_hdr->sh_info == 0)
|
---|
2833 | continue;
|
---|
2834 |
|
---|
2835 | local_syms = all_local_syms[bfd_indx];
|
---|
2836 |
|
---|
2837 | /* Walk over each section attached to the input bfd. */
|
---|
2838 | for (section = input_bfd->sections;
|
---|
2839 | section != NULL;
|
---|
2840 | section = section->next)
|
---|
2841 | {
|
---|
2842 | Elf_Internal_Shdr *input_rel_hdr;
|
---|
2843 | Elf32_External_Rela *external_relocs, *erelaend, *erela;
|
---|
2844 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
---|
2845 |
|
---|
2846 | /* If there aren't any relocs, then there's nothing more
|
---|
2847 | to do. */
|
---|
2848 | if ((section->flags & SEC_RELOC) == 0
|
---|
2849 | || section->reloc_count == 0)
|
---|
2850 | continue;
|
---|
2851 |
|
---|
2852 | /* If this section is a link-once section that will be
|
---|
2853 | discarded, then don't create any stubs. */
|
---|
2854 | if (section->output_section == NULL
|
---|
2855 | || section->output_section->owner != output_bfd)
|
---|
2856 | continue;
|
---|
2857 |
|
---|
2858 | /* Allocate space for the external relocations. */
|
---|
2859 | external_relocs
|
---|
2860 | = ((Elf32_External_Rela *)
|
---|
2861 | bfd_malloc (section->reloc_count
|
---|
2862 | * sizeof (Elf32_External_Rela)));
|
---|
2863 | if (external_relocs == NULL)
|
---|
2864 | {
|
---|
2865 | goto error_ret_free_local;
|
---|
2866 | }
|
---|
2867 |
|
---|
2868 | /* Likewise for the internal relocations. */
|
---|
2869 | internal_relocs = ((Elf_Internal_Rela *)
|
---|
2870 | bfd_malloc (section->reloc_count
|
---|
2871 | * sizeof (Elf_Internal_Rela)));
|
---|
2872 | if (internal_relocs == NULL)
|
---|
2873 | {
|
---|
2874 | free (external_relocs);
|
---|
2875 | goto error_ret_free_local;
|
---|
2876 | }
|
---|
2877 |
|
---|
2878 | /* Read in the external relocs. */
|
---|
2879 | input_rel_hdr = &elf_section_data (section)->rel_hdr;
|
---|
2880 | if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
|
---|
2881 | || bfd_read (external_relocs, 1,
|
---|
2882 | input_rel_hdr->sh_size,
|
---|
2883 | input_bfd) != input_rel_hdr->sh_size)
|
---|
2884 | {
|
---|
2885 | free (external_relocs);
|
---|
2886 | error_ret_free_internal:
|
---|
2887 | free (internal_relocs);
|
---|
2888 | goto error_ret_free_local;
|
---|
2889 | }
|
---|
2890 |
|
---|
2891 | /* Swap in the relocs. */
|
---|
2892 | erela = external_relocs;
|
---|
2893 | erelaend = erela + section->reloc_count;
|
---|
2894 | irela = internal_relocs;
|
---|
2895 | for (; erela < erelaend; erela++, irela++)
|
---|
2896 | bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
|
---|
2897 |
|
---|
2898 | /* We're done with the external relocs, free them. */
|
---|
2899 | free (external_relocs);
|
---|
2900 |
|
---|
2901 | /* Now examine each relocation. */
|
---|
2902 | irela = internal_relocs;
|
---|
2903 | irelaend = irela + section->reloc_count;
|
---|
2904 | for (; irela < irelaend; irela++)
|
---|
2905 | {
|
---|
2906 | unsigned int r_type, r_indx;
|
---|
2907 | enum elf32_hppa_stub_type stub_type;
|
---|
2908 | struct elf32_hppa_stub_hash_entry *stub_entry;
|
---|
2909 | asection *sym_sec;
|
---|
2910 | bfd_vma sym_value;
|
---|
2911 | bfd_vma destination;
|
---|
2912 | struct elf32_hppa_link_hash_entry *hash;
|
---|
2913 | char *stub_name;
|
---|
2914 | const asection *id_sec;
|
---|
2915 |
|
---|
2916 | r_type = ELF32_R_TYPE (irela->r_info);
|
---|
2917 | r_indx = ELF32_R_SYM (irela->r_info);
|
---|
2918 |
|
---|
2919 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
|
---|
2920 | {
|
---|
2921 | bfd_set_error (bfd_error_bad_value);
|
---|
2922 | goto error_ret_free_internal;
|
---|
2923 | }
|
---|
2924 |
|
---|
2925 | /* Only look for stubs on call instructions. */
|
---|
2926 | if (r_type != (unsigned int) R_PARISC_PCREL12F
|
---|
2927 | && r_type != (unsigned int) R_PARISC_PCREL17F
|
---|
2928 | && r_type != (unsigned int) R_PARISC_PCREL22F)
|
---|
2929 | continue;
|
---|
2930 |
|
---|
2931 | /* Now determine the call target, its name, value,
|
---|
2932 | section. */
|
---|
2933 | sym_sec = NULL;
|
---|
2934 | sym_value = 0;
|
---|
2935 | destination = 0;
|
---|
2936 | hash = NULL;
|
---|
2937 | if (r_indx < symtab_hdr->sh_info)
|
---|
2938 | {
|
---|
2939 | /* It's a local symbol. */
|
---|
2940 | Elf_Internal_Sym *sym;
|
---|
2941 | Elf_Internal_Shdr *hdr;
|
---|
2942 |
|
---|
2943 | sym = local_syms + r_indx;
|
---|
2944 | hdr = elf_elfsections (input_bfd)[sym->st_shndx];
|
---|
2945 | sym_sec = hdr->bfd_section;
|
---|
2946 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
---|
2947 | sym_value = sym->st_value;
|
---|
2948 | destination = (sym_value + irela->r_addend
|
---|
2949 | + sym_sec->output_offset
|
---|
2950 | + sym_sec->output_section->vma);
|
---|
2951 | }
|
---|
2952 | else
|
---|
2953 | {
|
---|
2954 | /* It's an external symbol. */
|
---|
2955 | int e_indx;
|
---|
2956 |
|
---|
2957 | e_indx = r_indx - symtab_hdr->sh_info;
|
---|
2958 | hash = ((struct elf32_hppa_link_hash_entry *)
|
---|
2959 | elf_sym_hashes (input_bfd)[e_indx]);
|
---|
2960 |
|
---|
2961 | while (hash->elf.root.type == bfd_link_hash_indirect
|
---|
2962 | || hash->elf.root.type == bfd_link_hash_warning)
|
---|
2963 | hash = ((struct elf32_hppa_link_hash_entry *)
|
---|
2964 | hash->elf.root.u.i.link);
|
---|
2965 |
|
---|
2966 | if (hash->elf.root.type == bfd_link_hash_defined
|
---|
2967 | || hash->elf.root.type == bfd_link_hash_defweak)
|
---|
2968 | {
|
---|
2969 | sym_sec = hash->elf.root.u.def.section;
|
---|
2970 | sym_value = hash->elf.root.u.def.value;
|
---|
2971 | if (sym_sec->output_section != NULL)
|
---|
2972 | destination = (sym_value + irela->r_addend
|
---|
2973 | + sym_sec->output_offset
|
---|
2974 | + sym_sec->output_section->vma);
|
---|
2975 | }
|
---|
2976 | else if (hash->elf.root.type == bfd_link_hash_undefweak)
|
---|
2977 | {
|
---|
2978 | if (! info->shared)
|
---|
2979 | continue;
|
---|
2980 | }
|
---|
2981 | else if (hash->elf.root.type == bfd_link_hash_undefined)
|
---|
2982 | {
|
---|
2983 | if (! (info->shared
|
---|
2984 | && !info->no_undefined
|
---|
2985 | && (ELF_ST_VISIBILITY (hash->elf.other)
|
---|
2986 | == STV_DEFAULT)))
|
---|
2987 | continue;
|
---|
2988 | }
|
---|
2989 | else
|
---|
2990 | {
|
---|
2991 | bfd_set_error (bfd_error_bad_value);
|
---|
2992 | goto error_ret_free_internal;
|
---|
2993 | }
|
---|
2994 | }
|
---|
2995 |
|
---|
2996 | /* Determine what (if any) linker stub is needed. */
|
---|
2997 | stub_type = hppa_type_of_stub (section, irela, hash,
|
---|
2998 | destination);
|
---|
2999 | if (stub_type == hppa_stub_none)
|
---|
3000 | continue;
|
---|
3001 |
|
---|
3002 | /* Support for grouping stub sections. */
|
---|
3003 | id_sec = hplink->stub_group[section->id].link_sec;
|
---|
3004 |
|
---|
3005 | /* Get the name of this stub. */
|
---|
3006 | stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
|
---|
3007 | if (!stub_name)
|
---|
3008 | goto error_ret_free_internal;
|
---|
3009 |
|
---|
3010 | stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
|
---|
3011 | stub_name,
|
---|
3012 | false, false);
|
---|
3013 | if (stub_entry != NULL)
|
---|
3014 | {
|
---|
3015 | /* The proper stub has already been created. */
|
---|
3016 | free (stub_name);
|
---|
3017 | continue;
|
---|
3018 | }
|
---|
3019 |
|
---|
3020 | stub_entry = hppa_add_stub (stub_name, section, hplink);
|
---|
3021 | if (stub_entry == NULL)
|
---|
3022 | {
|
---|
3023 | free (stub_name);
|
---|
3024 | goto error_ret_free_local;
|
---|
3025 | }
|
---|
3026 |
|
---|
3027 | stub_entry->target_value = sym_value;
|
---|
3028 | stub_entry->target_section = sym_sec;
|
---|
3029 | stub_entry->stub_type = stub_type;
|
---|
3030 | if (info->shared)
|
---|
3031 | {
|
---|
3032 | if (stub_type == hppa_stub_import)
|
---|
3033 | stub_entry->stub_type = hppa_stub_import_shared;
|
---|
3034 | else if (stub_type == hppa_stub_long_branch
|
---|
3035 | && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL))
|
---|
3036 | stub_entry->stub_type = hppa_stub_long_branch_shared;
|
---|
3037 | }
|
---|
3038 | stub_entry->h = hash;
|
---|
3039 | stub_changed = 1;
|
---|
3040 | }
|
---|
3041 |
|
---|
3042 | /* We're done with the internal relocs, free them. */
|
---|
3043 | free (internal_relocs);
|
---|
3044 | }
|
---|
3045 | }
|
---|
3046 |
|
---|
3047 | if (!stub_changed)
|
---|
3048 | break;
|
---|
3049 |
|
---|
3050 | /* OK, we've added some stubs. Find out the new size of the
|
---|
3051 | stub sections. */
|
---|
3052 | for (stub_sec = hplink->stub_bfd->sections;
|
---|
3053 | stub_sec != NULL;
|
---|
3054 | stub_sec = stub_sec->next)
|
---|
3055 | {
|
---|
3056 | stub_sec->_raw_size = 0;
|
---|
3057 | stub_sec->_cooked_size = 0;
|
---|
3058 | }
|
---|
3059 | #if ! LONG_BRANCH_PIC_IN_SHLIB
|
---|
3060 | {
|
---|
3061 | int i;
|
---|
3062 |
|
---|
3063 | for (i = top_id; i >= 0; --i)
|
---|
3064 | {
|
---|
3065 | /* This will probably hit the same section many times.. */
|
---|
3066 | stub_sec = hplink->stub_group[i].reloc_sec;
|
---|
3067 | if (stub_sec != NULL)
|
---|
3068 | {
|
---|
3069 | stub_sec->_raw_size = 0;
|
---|
3070 | stub_sec->_cooked_size = 0;
|
---|
3071 | }
|
---|
3072 | }
|
---|
3073 | }
|
---|
3074 | #endif
|
---|
3075 |
|
---|
3076 | bfd_hash_traverse (&hplink->stub_hash_table,
|
---|
3077 | hppa_size_one_stub,
|
---|
3078 | hplink);
|
---|
3079 |
|
---|
3080 | /* Ask the linker to do its stuff. */
|
---|
3081 | (*hplink->layout_sections_again) ();
|
---|
3082 | stub_changed = 0;
|
---|
3083 | }
|
---|
3084 |
|
---|
3085 | ret = 1;
|
---|
3086 |
|
---|
3087 | error_ret_free_local:
|
---|
3088 | while (bfd_count-- > 0)
|
---|
3089 | if (all_local_syms[bfd_count])
|
---|
3090 | free (all_local_syms[bfd_count]);
|
---|
3091 | free (all_local_syms);
|
---|
3092 |
|
---|
3093 | return ret;
|
---|
3094 | }
|
---|
3095 |
|
---|
3096 | /* For a final link, this function is called after we have sized the
|
---|
3097 | stubs to provide a value for __gp. */
|
---|
3098 |
|
---|
3099 | boolean
|
---|
3100 | elf32_hppa_set_gp (abfd, info)
|
---|
3101 | bfd *abfd;
|
---|
3102 | struct bfd_link_info *info;
|
---|
3103 | {
|
---|
3104 | struct elf32_hppa_link_hash_table *hplink;
|
---|
3105 | struct elf_link_hash_entry *h;
|
---|
3106 | asection *sec;
|
---|
3107 | bfd_vma gp_val;
|
---|
3108 |
|
---|
3109 | hplink = hppa_link_hash_table (info);
|
---|
3110 | h = elf_link_hash_lookup (&hplink->root, "$global$",
|
---|
3111 | false, false, false);
|
---|
3112 |
|
---|
3113 | if (h != NULL
|
---|
3114 | && (h->root.type == bfd_link_hash_defined
|
---|
3115 | || h->root.type == bfd_link_hash_defweak))
|
---|
3116 | {
|
---|
3117 | gp_val = h->root.u.def.value;
|
---|
3118 | sec = h->root.u.def.section;
|
---|
3119 | }
|
---|
3120 | else
|
---|
3121 | {
|
---|
3122 | /* Choose to point our LTP at, in this order, one of .plt, .got,
|
---|
3123 | or .data, if these sections exist. In the case of choosing
|
---|
3124 | .plt try to make the LTP ideal for addressing anywhere in the
|
---|
3125 | .plt or .got with a 14 bit signed offset. Typically, the end
|
---|
3126 | of the .plt is the start of the .got, so choose .plt + 0x2000
|
---|
3127 | if either the .plt or .got is larger than 0x2000. If both
|
---|
3128 | the .plt and .got are smaller than 0x2000, choose the end of
|
---|
3129 | the .plt section. */
|
---|
3130 |
|
---|
3131 | sec = hplink->splt;
|
---|
3132 | if (sec != NULL)
|
---|
3133 | {
|
---|
3134 | gp_val = sec->_raw_size;
|
---|
3135 | if (gp_val > 0x2000
|
---|
3136 | || (hplink->sgot && hplink->sgot->_raw_size > 0x2000))
|
---|
3137 | {
|
---|
3138 | gp_val = 0x2000;
|
---|
3139 | }
|
---|
3140 | }
|
---|
3141 | else
|
---|
3142 | {
|
---|
3143 | gp_val = 0;
|
---|
3144 | sec = hplink->sgot;
|
---|
3145 | if (sec != NULL)
|
---|
3146 | {
|
---|
3147 | /* We know we don't have a .plt. If .got is large,
|
---|
3148 | offset our LTP. */
|
---|
3149 | if (sec->_raw_size > 0x2000)
|
---|
3150 | gp_val = 0x2000;
|
---|
3151 | }
|
---|
3152 | else
|
---|
3153 | {
|
---|
3154 | /* No .plt or .got. Who cares what the LTP is? */
|
---|
3155 | sec = bfd_get_section_by_name (abfd, ".data");
|
---|
3156 | }
|
---|
3157 | }
|
---|
3158 |
|
---|
3159 | if (h != NULL)
|
---|
3160 | {
|
---|
3161 | h->root.type = bfd_link_hash_defined;
|
---|
3162 | h->root.u.def.value = gp_val;
|
---|
3163 | if (sec != NULL)
|
---|
3164 | h->root.u.def.section = sec;
|
---|
3165 | else
|
---|
3166 | h->root.u.def.section = bfd_abs_section_ptr;
|
---|
3167 | }
|
---|
3168 | }
|
---|
3169 |
|
---|
3170 | if (sec != NULL && sec->output_section != NULL)
|
---|
3171 | gp_val += sec->output_section->vma + sec->output_offset;
|
---|
3172 |
|
---|
3173 | elf_gp (abfd) = gp_val;
|
---|
3174 | return true;
|
---|
3175 | }
|
---|
3176 |
|
---|
3177 | /* Build all the stubs associated with the current output file. The
|
---|
3178 | stubs are kept in a hash table attached to the main linker hash
|
---|
3179 | table. We also set up the .plt entries for statically linked PIC
|
---|
3180 | functions here. This function is called via hppaelf_finish in the
|
---|
3181 | linker. */
|
---|
3182 |
|
---|
3183 | boolean
|
---|
3184 | elf32_hppa_build_stubs (info)
|
---|
3185 | struct bfd_link_info *info;
|
---|
3186 | {
|
---|
3187 | asection *stub_sec;
|
---|
3188 | struct bfd_hash_table *table;
|
---|
3189 | struct elf32_hppa_link_hash_table *hplink;
|
---|
3190 |
|
---|
3191 | hplink = hppa_link_hash_table (info);
|
---|
3192 |
|
---|
3193 | for (stub_sec = hplink->stub_bfd->sections;
|
---|
3194 | stub_sec != NULL;
|
---|
3195 | stub_sec = stub_sec->next)
|
---|
3196 | {
|
---|
3197 | size_t size;
|
---|
3198 |
|
---|
3199 | /* Allocate memory to hold the linker stubs. */
|
---|
3200 | size = stub_sec->_raw_size;
|
---|
3201 | stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd,
|
---|
3202 | size);
|
---|
3203 | if (stub_sec->contents == NULL && size != 0)
|
---|
3204 | return false;
|
---|
3205 | stub_sec->_raw_size = 0;
|
---|
3206 | }
|
---|
3207 |
|
---|
3208 | /* Build the stubs as directed by the stub hash table. */
|
---|
3209 | table = &hplink->stub_hash_table;
|
---|
3210 | bfd_hash_traverse (table, hppa_build_one_stub, info);
|
---|
3211 |
|
---|
3212 | return true;
|
---|
3213 | }
|
---|
3214 |
|
---|
3215 | /* Perform a final link. */
|
---|
3216 |
|
---|
3217 | static boolean
|
---|
3218 | elf32_hppa_final_link (abfd, info)
|
---|
3219 | bfd *abfd;
|
---|
3220 | struct bfd_link_info *info;
|
---|
3221 | {
|
---|
3222 | asection *s;
|
---|
3223 |
|
---|
3224 | /* Invoke the regular ELF linker to do all the work. */
|
---|
3225 | if (!bfd_elf32_bfd_final_link (abfd, info))
|
---|
3226 | return false;
|
---|
3227 |
|
---|
3228 | /* If we're producing a final executable, sort the contents of the
|
---|
3229 | unwind section. Magic section names, but this is much safer than
|
---|
3230 | having elf32_hppa_relocate_section remember where SEGREL32 relocs
|
---|
3231 | occurred. Consider what happens if someone inept creates a
|
---|
3232 | linker script that puts unwind information in .text. */
|
---|
3233 | s = bfd_get_section_by_name (abfd, ".PARISC.unwind");
|
---|
3234 | if (s != NULL)
|
---|
3235 | {
|
---|
3236 | bfd_size_type size;
|
---|
3237 | char *contents;
|
---|
3238 |
|
---|
3239 | size = s->_raw_size;
|
---|
3240 | contents = bfd_malloc (size);
|
---|
3241 | if (contents == NULL)
|
---|
3242 | return false;
|
---|
3243 |
|
---|
3244 | if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size))
|
---|
3245 | return false;
|
---|
3246 |
|
---|
3247 | qsort (contents, size / 16, 16, hppa_unwind_entry_compare);
|
---|
3248 |
|
---|
3249 | if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size))
|
---|
3250 | return false;
|
---|
3251 | }
|
---|
3252 | return true;
|
---|
3253 | }
|
---|
3254 |
|
---|
3255 | /* Record the lowest address for the data and text segments. */
|
---|
3256 |
|
---|
3257 | static void
|
---|
3258 | hppa_record_segment_addr (abfd, section, data)
|
---|
3259 | bfd *abfd ATTRIBUTE_UNUSED;
|
---|
3260 | asection *section;
|
---|
3261 | PTR data;
|
---|
3262 | {
|
---|
3263 | struct elf32_hppa_link_hash_table *hplink;
|
---|
3264 |
|
---|
3265 | hplink = (struct elf32_hppa_link_hash_table *) data;
|
---|
3266 |
|
---|
3267 | if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
|
---|
3268 | {
|
---|
3269 | bfd_vma value = section->vma - section->filepos;
|
---|
3270 |
|
---|
3271 | if ((section->flags & SEC_READONLY) != 0)
|
---|
3272 | {
|
---|
3273 | if (value < hplink->text_segment_base)
|
---|
3274 | hplink->text_segment_base = value;
|
---|
3275 | }
|
---|
3276 | else
|
---|
3277 | {
|
---|
3278 | if (value < hplink->data_segment_base)
|
---|
3279 | hplink->data_segment_base = value;
|
---|
3280 | }
|
---|
3281 | }
|
---|
3282 | }
|
---|
3283 |
|
---|
3284 | /* Perform a relocation as part of a final link. */
|
---|
3285 |
|
---|
3286 | static bfd_reloc_status_type
|
---|
3287 | final_link_relocate (input_section, contents, rel, value, hplink, sym_sec, h)
|
---|
3288 | asection *input_section;
|
---|
3289 | bfd_byte *contents;
|
---|
3290 | const Elf_Internal_Rela *rel;
|
---|
3291 | bfd_vma value;
|
---|
3292 | struct elf32_hppa_link_hash_table *hplink;
|
---|
3293 | asection *sym_sec;
|
---|
3294 | struct elf32_hppa_link_hash_entry *h;
|
---|
3295 | {
|
---|
3296 | int insn;
|
---|
3297 | unsigned int r_type = ELF32_R_TYPE (rel->r_info);
|
---|
3298 | reloc_howto_type *howto = elf_hppa_howto_table + r_type;
|
---|
3299 | int r_format = howto->bitsize;
|
---|
3300 | enum hppa_reloc_field_selector_type_alt r_field;
|
---|
3301 | bfd *input_bfd = input_section->owner;
|
---|
3302 | bfd_vma offset = rel->r_offset;
|
---|
3303 | bfd_vma max_branch_offset = 0;
|
---|
3304 | bfd_byte *hit_data = contents + offset;
|
---|
3305 | bfd_signed_vma addend = rel->r_addend;
|
---|
3306 | bfd_vma location;
|
---|
3307 | struct elf32_hppa_stub_hash_entry *stub_entry = NULL;
|
---|
3308 | int val;
|
---|
3309 |
|
---|
3310 | if (r_type == R_PARISC_NONE)
|
---|
3311 | return bfd_reloc_ok;
|
---|
3312 |
|
---|
3313 | insn = bfd_get_32 (input_bfd, hit_data);
|
---|
3314 |
|
---|
3315 | /* Find out where we are and where we're going. */
|
---|
3316 | location = (offset +
|
---|
3317 | input_section->output_offset +
|
---|
3318 | input_section->output_section->vma);
|
---|
3319 |
|
---|
3320 | switch (r_type)
|
---|
3321 | {
|
---|
3322 | case R_PARISC_PCREL12F:
|
---|
3323 | case R_PARISC_PCREL17F:
|
---|
3324 | case R_PARISC_PCREL22F:
|
---|
3325 | /* If this is a call to a function defined in another dynamic
|
---|
3326 | library, or if it is a call to a PIC function in the same
|
---|
3327 | object, or if this is a shared link and it is a call to a
|
---|
3328 | weak symbol which may or may not be in the same object, then
|
---|
3329 | find the import stub in the stub hash. */
|
---|
3330 | if (sym_sec == NULL
|
---|
3331 | || sym_sec->output_section == NULL
|
---|
3332 | || (h != NULL
|
---|
3333 | && ((h->maybe_pic_call
|
---|
3334 | && !(input_section->flags & SEC_HAS_GOT_REF))
|
---|
3335 | || (h->elf.root.type == bfd_link_hash_defweak
|
---|
3336 | && h->elf.dynindx != -1
|
---|
3337 | && h->elf.plt.offset != (bfd_vma) -1))))
|
---|
3338 | {
|
---|
3339 | stub_entry = hppa_get_stub_entry (input_section, sym_sec,
|
---|
3340 | h, rel, hplink);
|
---|
3341 | if (stub_entry != NULL)
|
---|
3342 | {
|
---|
3343 | value = (stub_entry->stub_offset
|
---|
3344 | + stub_entry->stub_sec->output_offset
|
---|
3345 | + stub_entry->stub_sec->output_section->vma);
|
---|
3346 | addend = 0;
|
---|
3347 | }
|
---|
3348 | else if (sym_sec == NULL && h != NULL
|
---|
3349 | && h->elf.root.type == bfd_link_hash_undefweak)
|
---|
3350 | {
|
---|
3351 | /* It's OK if undefined weak. Calls to undefined weak
|
---|
3352 | symbols behave as if the "called" function
|
---|
3353 | immediately returns. We can thus call to a weak
|
---|
3354 | function without first checking whether the function
|
---|
3355 | is defined. */
|
---|
3356 | value = location;
|
---|
3357 | addend = 8;
|
---|
3358 | }
|
---|
3359 | else
|
---|
3360 | return bfd_reloc_notsupported;
|
---|
3361 | }
|
---|
3362 | /* Fall thru. */
|
---|
3363 |
|
---|
3364 | case R_PARISC_PCREL21L:
|
---|
3365 | case R_PARISC_PCREL17C:
|
---|
3366 | case R_PARISC_PCREL17R:
|
---|
3367 | case R_PARISC_PCREL14R:
|
---|
3368 | case R_PARISC_PCREL14F:
|
---|
3369 | /* Make it a pc relative offset. */
|
---|
3370 | value -= location;
|
---|
3371 | addend -= 8;
|
---|
3372 | break;
|
---|
3373 |
|
---|
3374 | case R_PARISC_DPREL21L:
|
---|
3375 | case R_PARISC_DPREL14R:
|
---|
3376 | case R_PARISC_DPREL14F:
|
---|
3377 | /* For all the DP relative relocations, we need to examine the symbol's
|
---|
3378 | section. If it's a code section, then "data pointer relative" makes
|
---|
3379 | no sense. In that case we don't adjust the "value", and for 21 bit
|
---|
3380 | addil instructions, we change the source addend register from %dp to
|
---|
3381 | %r0. This situation commonly arises when a variable's "constness"
|
---|
3382 | is declared differently from the way the variable is defined. For
|
---|
3383 | instance: "extern int foo" with foo defined as "const int foo". */
|
---|
3384 | if (sym_sec == NULL)
|
---|
3385 | break;
|
---|
3386 | if ((sym_sec->flags & SEC_CODE) != 0)
|
---|
3387 | {
|
---|
3388 | if ((insn & ((0x3f << 26) | (0x1f << 21)))
|
---|
3389 | == (((int) OP_ADDIL << 26) | (27 << 21)))
|
---|
3390 | {
|
---|
3391 | insn &= ~ (0x1f << 21);
|
---|
3392 | #if 1 /* debug them. */
|
---|
3393 | (*_bfd_error_handler)
|
---|
3394 | (_("%s(%s+0x%lx): fixing %s"),
|
---|
3395 | bfd_get_filename (input_bfd),
|
---|
3396 | input_section->name,
|
---|
3397 | (long) rel->r_offset,
|
---|
3398 | howto->name);
|
---|
3399 | #endif
|
---|
3400 | }
|
---|
3401 | /* Now try to make things easy for the dynamic linker. */
|
---|
3402 |
|
---|
3403 | break;
|
---|
3404 | }
|
---|
3405 | /* Fall thru. */
|
---|
3406 |
|
---|
3407 | case R_PARISC_DLTIND21L:
|
---|
3408 | case R_PARISC_DLTIND14R:
|
---|
3409 | case R_PARISC_DLTIND14F:
|
---|
3410 | value -= elf_gp (input_section->output_section->owner);
|
---|
3411 | break;
|
---|
3412 |
|
---|
3413 | case R_PARISC_SEGREL32:
|
---|
3414 | if ((sym_sec->flags & SEC_CODE) != 0)
|
---|
3415 | value -= hplink->text_segment_base;
|
---|
3416 | else
|
---|
3417 | value -= hplink->data_segment_base;
|
---|
3418 | break;
|
---|
3419 |
|
---|
3420 | default:
|
---|
3421 | break;
|
---|
3422 | }
|
---|
3423 |
|
---|
3424 | switch (r_type)
|
---|
3425 | {
|
---|
3426 | case R_PARISC_DIR32:
|
---|
3427 | case R_PARISC_DIR14F:
|
---|
3428 | case R_PARISC_DIR17F:
|
---|
3429 | case R_PARISC_PCREL17C:
|
---|
3430 | case R_PARISC_PCREL14F:
|
---|
3431 | case R_PARISC_DPREL14F:
|
---|
3432 | case R_PARISC_PLABEL32:
|
---|
3433 | case R_PARISC_DLTIND14F:
|
---|
3434 | case R_PARISC_SEGBASE:
|
---|
3435 | case R_PARISC_SEGREL32:
|
---|
3436 | r_field = e_fsel;
|
---|
3437 | break;
|
---|
3438 |
|
---|
3439 | case R_PARISC_DIR21L:
|
---|
3440 | case R_PARISC_PCREL21L:
|
---|
3441 | case R_PARISC_DPREL21L:
|
---|
3442 | case R_PARISC_PLABEL21L:
|
---|
3443 | case R_PARISC_DLTIND21L:
|
---|
3444 | r_field = e_lrsel;
|
---|
3445 | break;
|
---|
3446 |
|
---|
3447 | case R_PARISC_DIR17R:
|
---|
3448 | case R_PARISC_PCREL17R:
|
---|
3449 | case R_PARISC_DIR14R:
|
---|
3450 | case R_PARISC_PCREL14R:
|
---|
3451 | case R_PARISC_DPREL14R:
|
---|
3452 | case R_PARISC_PLABEL14R:
|
---|
3453 | case R_PARISC_DLTIND14R:
|
---|
3454 | r_field = e_rrsel;
|
---|
3455 | break;
|
---|
3456 |
|
---|
3457 | case R_PARISC_PCREL12F:
|
---|
3458 | case R_PARISC_PCREL17F:
|
---|
3459 | case R_PARISC_PCREL22F:
|
---|
3460 | r_field = e_fsel;
|
---|
3461 |
|
---|
3462 | if (r_type == (unsigned int) R_PARISC_PCREL17F)
|
---|
3463 | {
|
---|
3464 | max_branch_offset = (1 << (17-1)) << 2;
|
---|
3465 | }
|
---|
3466 | else if (r_type == (unsigned int) R_PARISC_PCREL12F)
|
---|
3467 | {
|
---|
3468 | max_branch_offset = (1 << (12-1)) << 2;
|
---|
3469 | }
|
---|
3470 | else
|
---|
3471 | {
|
---|
3472 | max_branch_offset = (1 << (22-1)) << 2;
|
---|
3473 | }
|
---|
3474 |
|
---|
3475 | /* sym_sec is NULL on undefined weak syms or when shared on
|
---|
3476 | undefined syms. We've already checked for a stub for the
|
---|
3477 | shared undefined case. */
|
---|
3478 | if (sym_sec == NULL)
|
---|
3479 | break;
|
---|
3480 |
|
---|
3481 | /* If the branch is out of reach, then redirect the
|
---|
3482 | call to the local stub for this function. */
|
---|
3483 | if (value + addend + max_branch_offset >= 2*max_branch_offset)
|
---|
3484 | {
|
---|
3485 | stub_entry = hppa_get_stub_entry (input_section, sym_sec,
|
---|
3486 | h, rel, hplink);
|
---|
3487 | if (stub_entry == NULL)
|
---|
3488 | return bfd_reloc_notsupported;
|
---|
3489 |
|
---|
3490 | /* Munge up the value and addend so that we call the stub
|
---|
3491 | rather than the procedure directly. */
|
---|
3492 | value = (stub_entry->stub_offset
|
---|
3493 | + stub_entry->stub_sec->output_offset
|
---|
3494 | + stub_entry->stub_sec->output_section->vma
|
---|
3495 | - location);
|
---|
3496 | addend = -8;
|
---|
3497 | }
|
---|
3498 | break;
|
---|
3499 |
|
---|
3500 | /* Something we don't know how to handle. */
|
---|
3501 | default:
|
---|
3502 | return bfd_reloc_notsupported;
|
---|
3503 | }
|
---|
3504 |
|
---|
3505 | /* Make sure we can reach the stub. */
|
---|
3506 | if (max_branch_offset != 0
|
---|
3507 | && value + addend + max_branch_offset >= 2*max_branch_offset)
|
---|
3508 | {
|
---|
3509 | (*_bfd_error_handler)
|
---|
3510 | (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
|
---|
3511 | bfd_get_filename (input_bfd),
|
---|
3512 | input_section->name,
|
---|
3513 | (long) rel->r_offset,
|
---|
3514 | stub_entry->root.string);
|
---|
3515 | return bfd_reloc_notsupported;
|
---|
3516 | }
|
---|
3517 |
|
---|
3518 | val = hppa_field_adjust (value, addend, r_field);
|
---|
3519 |
|
---|
3520 | switch (r_type)
|
---|
3521 | {
|
---|
3522 | case R_PARISC_PCREL12F:
|
---|
3523 | case R_PARISC_PCREL17C:
|
---|
3524 | case R_PARISC_PCREL17F:
|
---|
3525 | case R_PARISC_PCREL17R:
|
---|
3526 | case R_PARISC_PCREL22F:
|
---|
3527 | case R_PARISC_DIR17F:
|
---|
3528 | case R_PARISC_DIR17R:
|
---|
3529 | /* This is a branch. Divide the offset by four.
|
---|
3530 | Note that we need to decide whether it's a branch or
|
---|
3531 | otherwise by inspecting the reloc. Inspecting insn won't
|
---|
3532 | work as insn might be from a .word directive. */
|
---|
3533 | val >>= 2;
|
---|
3534 | break;
|
---|
3535 |
|
---|
3536 | default:
|
---|
3537 | break;
|
---|
3538 | }
|
---|
3539 |
|
---|
3540 | insn = hppa_rebuild_insn (insn, val, r_format);
|
---|
3541 |
|
---|
3542 | /* Update the instruction word. */
|
---|
3543 | bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
|
---|
3544 | return bfd_reloc_ok;
|
---|
3545 | }
|
---|
3546 |
|
---|
3547 | /* Relocate an HPPA ELF section. */
|
---|
3548 |
|
---|
3549 | static boolean
|
---|
3550 | elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
|
---|
3551 | contents, relocs, local_syms, local_sections)
|
---|
3552 | bfd *output_bfd;
|
---|
3553 | struct bfd_link_info *info;
|
---|
3554 | bfd *input_bfd;
|
---|
3555 | asection *input_section;
|
---|
3556 | bfd_byte *contents;
|
---|
3557 | Elf_Internal_Rela *relocs;
|
---|
3558 | Elf_Internal_Sym *local_syms;
|
---|
3559 | asection **local_sections;
|
---|
3560 | {
|
---|
3561 | bfd *dynobj;
|
---|
3562 | bfd_vma *local_got_offsets;
|
---|
3563 | struct elf32_hppa_link_hash_table *hplink;
|
---|
3564 | Elf_Internal_Shdr *symtab_hdr;
|
---|
3565 | Elf_Internal_Rela *rel;
|
---|
3566 | Elf_Internal_Rela *relend;
|
---|
3567 | asection *sreloc;
|
---|
3568 |
|
---|
3569 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
---|
3570 |
|
---|
3571 | hplink = hppa_link_hash_table (info);
|
---|
3572 | dynobj = hplink->root.dynobj;
|
---|
3573 | local_got_offsets = elf_local_got_offsets (input_bfd);
|
---|
3574 | sreloc = NULL;
|
---|
3575 |
|
---|
3576 | rel = relocs;
|
---|
3577 | relend = relocs + input_section->reloc_count;
|
---|
3578 | for (; rel < relend; rel++)
|
---|
3579 | {
|
---|
3580 | unsigned int r_type;
|
---|
3581 | reloc_howto_type *howto;
|
---|
3582 | unsigned int r_symndx;
|
---|
3583 | struct elf32_hppa_link_hash_entry *h;
|
---|
3584 | Elf_Internal_Sym *sym;
|
---|
3585 | asection *sym_sec;
|
---|
3586 | bfd_vma relocation;
|
---|
3587 | bfd_reloc_status_type r;
|
---|
3588 | const char *sym_name;
|
---|
3589 | boolean plabel;
|
---|
3590 |
|
---|
3591 | r_type = ELF32_R_TYPE (rel->r_info);
|
---|
3592 | if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
|
---|
3593 | {
|
---|
3594 | bfd_set_error (bfd_error_bad_value);
|
---|
3595 | return false;
|
---|
3596 | }
|
---|
3597 | if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
|
---|
3598 | || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
|
---|
3599 | continue;
|
---|
3600 |
|
---|
3601 | r_symndx = ELF32_R_SYM (rel->r_info);
|
---|
3602 |
|
---|
3603 | if (info->relocateable)
|
---|
3604 | {
|
---|
3605 | /* This is a relocateable link. We don't have to change
|
---|
3606 | anything, unless the reloc is against a section symbol,
|
---|
3607 | in which case we have to adjust according to where the
|
---|
3608 | section symbol winds up in the output section. */
|
---|
3609 | if (r_symndx < symtab_hdr->sh_info)
|
---|
3610 | {
|
---|
3611 | sym = local_syms + r_symndx;
|
---|
3612 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
---|
3613 | {
|
---|
3614 | sym_sec = local_sections[r_symndx];
|
---|
3615 | rel->r_addend += sym_sec->output_offset;
|
---|
3616 | }
|
---|
3617 | }
|
---|
3618 | continue;
|
---|
3619 | }
|
---|
3620 |
|
---|
3621 | /* This is a final link. */
|
---|
3622 | h = NULL;
|
---|
3623 | sym = NULL;
|
---|
3624 | sym_sec = NULL;
|
---|
3625 | if (r_symndx < symtab_hdr->sh_info)
|
---|
3626 | {
|
---|
3627 | /* This is a local symbol, h defaults to NULL. */
|
---|
3628 | sym = local_syms + r_symndx;
|
---|
3629 | sym_sec = local_sections[r_symndx];
|
---|
3630 | relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
|
---|
3631 | ? 0 : sym->st_value)
|
---|
3632 | + sym_sec->output_offset
|
---|
3633 | + sym_sec->output_section->vma);
|
---|
3634 | }
|
---|
3635 | else
|
---|
3636 | {
|
---|
3637 | int indx;
|
---|
3638 |
|
---|
3639 | /* It's a global; Find its entry in the link hash. */
|
---|
3640 | indx = r_symndx - symtab_hdr->sh_info;
|
---|
3641 | h = ((struct elf32_hppa_link_hash_entry *)
|
---|
3642 | elf_sym_hashes (input_bfd)[indx]);
|
---|
3643 | while (h->elf.root.type == bfd_link_hash_indirect
|
---|
3644 | || h->elf.root.type == bfd_link_hash_warning)
|
---|
3645 | h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link;
|
---|
3646 |
|
---|
3647 | relocation = 0;
|
---|
3648 | if (h->elf.root.type == bfd_link_hash_defined
|
---|
3649 | || h->elf.root.type == bfd_link_hash_defweak)
|
---|
3650 | {
|
---|
3651 | sym_sec = h->elf.root.u.def.section;
|
---|
3652 | /* If sym_sec->output_section is NULL, then it's a
|
---|
3653 | symbol defined in a shared library. */
|
---|
3654 | if (sym_sec->output_section != NULL)
|
---|
3655 | relocation = (h->elf.root.u.def.value
|
---|
3656 | + sym_sec->output_offset
|
---|
3657 | + sym_sec->output_section->vma);
|
---|
3658 | }
|
---|
3659 | else if (h->elf.root.type == bfd_link_hash_undefweak)
|
---|
3660 | ;
|
---|
3661 | else if (info->shared && !info->no_undefined
|
---|
3662 | && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT
|
---|
3663 | && h->elf.type != STT_PARISC_MILLI)
|
---|
3664 | {
|
---|
3665 | if (info->symbolic)
|
---|
3666 | if (!((*info->callbacks->undefined_symbol)
|
---|
3667 | (info, h->elf.root.root.string, input_bfd,
|
---|
3668 | input_section, rel->r_offset, false)))
|
---|
3669 | return false;
|
---|
3670 | }
|
---|
3671 | else
|
---|
3672 | {
|
---|
3673 | if (!((*info->callbacks->undefined_symbol)
|
---|
3674 | (info, h->elf.root.root.string, input_bfd,
|
---|
3675 | input_section, rel->r_offset, true)))
|
---|
3676 | return false;
|
---|
3677 | }
|
---|
3678 | }
|
---|
3679 |
|
---|
3680 | /* Do any required modifications to the relocation value, and
|
---|
3681 | determine what types of dynamic info we need to output, if
|
---|
3682 | any. */
|
---|
3683 | plabel = 0;
|
---|
3684 | switch (r_type)
|
---|
3685 | {
|
---|
3686 | case R_PARISC_DLTIND14F:
|
---|
3687 | case R_PARISC_DLTIND14R:
|
---|
3688 | case R_PARISC_DLTIND21L:
|
---|
3689 | /* Relocation is to the entry for this symbol in the global
|
---|
3690 | offset table. */
|
---|
3691 | if (h != NULL)
|
---|
3692 | {
|
---|
3693 | bfd_vma off;
|
---|
3694 | boolean dyn;
|
---|
3695 |
|
---|
3696 | off = h->elf.got.offset;
|
---|
3697 | if (off == (bfd_vma) -1)
|
---|
3698 | abort ();
|
---|
3699 |
|
---|
3700 | dyn = hplink->root.dynamic_sections_created;
|
---|
3701 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf))
|
---|
3702 | {
|
---|
3703 | /* This is actually a static link, or it is a
|
---|
3704 | -Bsymbolic link and the symbol is defined
|
---|
3705 | locally, or the symbol was forced to be local
|
---|
3706 | because of a version file. We must initialize
|
---|
3707 | this entry in the global offset table. Since the
|
---|
3708 | offset must always be a multiple of 4, we use the
|
---|
3709 | least significant bit to record whether we have
|
---|
3710 | initialized it already.
|
---|
3711 |
|
---|
3712 | When doing a dynamic link, we create a .rela.got
|
---|
3713 | relocation entry to initialize the value. This
|
---|
3714 | is done in the finish_dynamic_symbol routine. */
|
---|
3715 | if ((off & 1) != 0)
|
---|
3716 | off &= ~1;
|
---|
3717 | else
|
---|
3718 | {
|
---|
3719 | bfd_put_32 (output_bfd, relocation,
|
---|
3720 | hplink->sgot->contents + off);
|
---|
3721 | h->elf.got.offset |= 1;
|
---|
3722 | }
|
---|
3723 | }
|
---|
3724 |
|
---|
3725 | relocation = off;
|
---|
3726 | }
|
---|
3727 | else
|
---|
3728 | {
|
---|
3729 | /* Local symbol case. */
|
---|
3730 | bfd_vma off;
|
---|
3731 |
|
---|
3732 | if (local_got_offsets == NULL
|
---|
3733 | || (off = local_got_offsets[r_symndx]) == (bfd_vma) -1)
|
---|
3734 | abort ();
|
---|
3735 |
|
---|
3736 | /* The offset must always be a multiple of 4. We use
|
---|
3737 | the least significant bit to record whether we have
|
---|
3738 | already generated the necessary reloc. */
|
---|
3739 | if ((off & 1) != 0)
|
---|
3740 | off &= ~1;
|
---|
3741 | else
|
---|
3742 | {
|
---|
3743 | bfd_put_32 (output_bfd, relocation,
|
---|
3744 | hplink->sgot->contents + off);
|
---|
3745 |
|
---|
3746 | if (info->shared)
|
---|
3747 | {
|
---|
3748 | /* Output a dynamic relocation for this GOT
|
---|
3749 | entry. In this case it is relative to the
|
---|
3750 | base of the object because the symbol index
|
---|
3751 | is zero. */
|
---|
3752 | Elf_Internal_Rela outrel;
|
---|
3753 | asection *srelgot = hplink->srelgot;
|
---|
3754 |
|
---|
3755 | outrel.r_offset = (off
|
---|
3756 | + hplink->sgot->output_offset
|
---|
3757 | + hplink->sgot->output_section->vma);
|
---|
3758 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
|
---|
3759 | outrel.r_addend = relocation;
|
---|
3760 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
---|
3761 | ((Elf32_External_Rela *)
|
---|
3762 | srelgot->contents
|
---|
3763 | + srelgot->reloc_count));
|
---|
3764 | ++srelgot->reloc_count;
|
---|
3765 | }
|
---|
3766 |
|
---|
3767 | local_got_offsets[r_symndx] |= 1;
|
---|
3768 | }
|
---|
3769 |
|
---|
3770 | relocation = off;
|
---|
3771 | }
|
---|
3772 |
|
---|
3773 | /* Add the base of the GOT to the relocation value. */
|
---|
3774 | relocation += (hplink->sgot->output_offset
|
---|
3775 | + hplink->sgot->output_section->vma);
|
---|
3776 | break;
|
---|
3777 |
|
---|
3778 | case R_PARISC_SEGREL32:
|
---|
3779 | /* If this is the first SEGREL relocation, then initialize
|
---|
3780 | the segment base values. */
|
---|
3781 | if (hplink->text_segment_base == (bfd_vma) -1)
|
---|
3782 | bfd_map_over_sections (output_bfd,
|
---|
3783 | hppa_record_segment_addr,
|
---|
3784 | hplink);
|
---|
3785 | break;
|
---|
3786 |
|
---|
3787 | case R_PARISC_PLABEL14R:
|
---|
3788 | case R_PARISC_PLABEL21L:
|
---|
3789 | case R_PARISC_PLABEL32:
|
---|
3790 | if (hplink->root.dynamic_sections_created)
|
---|
3791 | {
|
---|
3792 | bfd_vma off;
|
---|
3793 |
|
---|
3794 | /* If we have a global symbol with a PLT slot, then
|
---|
3795 | redirect this relocation to it. */
|
---|
3796 | if (h != NULL)
|
---|
3797 | {
|
---|
3798 | off = h->elf.plt.offset;
|
---|
3799 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf))
|
---|
3800 | {
|
---|
3801 | /* In a non-shared link, adjust_dynamic_symbols
|
---|
3802 | isn't called for symbols forced local. We
|
---|
3803 | need to write out the plt entry here. */
|
---|
3804 | if ((off & 1) != 0)
|
---|
3805 | off &= ~1;
|
---|
3806 | else
|
---|
3807 | {
|
---|
3808 | bfd_put_32 (output_bfd,
|
---|
3809 | relocation,
|
---|
3810 | hplink->splt->contents + off);
|
---|
3811 | bfd_put_32 (output_bfd,
|
---|
3812 | elf_gp (hplink->splt->output_section->owner),
|
---|
3813 | hplink->splt->contents + off + 4);
|
---|
3814 | h->elf.plt.offset |= 1;
|
---|
3815 | }
|
---|
3816 | }
|
---|
3817 | }
|
---|
3818 | else
|
---|
3819 | {
|
---|
3820 | int indx;
|
---|
3821 |
|
---|
3822 | indx = r_symndx + symtab_hdr->sh_info;
|
---|
3823 | off = local_got_offsets[indx];
|
---|
3824 |
|
---|
3825 | /* As for the local .got entry case, we use the last
|
---|
3826 | bit to record whether we've already initialised
|
---|
3827 | this local .plt entry. */
|
---|
3828 | if ((off & 1) != 0)
|
---|
3829 | off &= ~1;
|
---|
3830 | else
|
---|
3831 | {
|
---|
3832 | bfd_put_32 (output_bfd,
|
---|
3833 | relocation,
|
---|
3834 | hplink->splt->contents + off);
|
---|
3835 | bfd_put_32 (output_bfd,
|
---|
3836 | elf_gp (hplink->splt->output_section->owner),
|
---|
3837 | hplink->splt->contents + off + 4);
|
---|
3838 |
|
---|
3839 | if (info->shared)
|
---|
3840 | {
|
---|
3841 | /* Output a dynamic IPLT relocation for this
|
---|
3842 | PLT entry. */
|
---|
3843 | Elf_Internal_Rela outrel;
|
---|
3844 | asection *srelplt = hplink->srelplt;
|
---|
3845 |
|
---|
3846 | outrel.r_offset = (off
|
---|
3847 | + hplink->splt->output_offset
|
---|
3848 | + hplink->splt->output_section->vma);
|
---|
3849 | outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
|
---|
3850 | outrel.r_addend = relocation;
|
---|
3851 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
---|
3852 | ((Elf32_External_Rela *)
|
---|
3853 | srelplt->contents
|
---|
3854 | + srelplt->reloc_count));
|
---|
3855 | ++srelplt->reloc_count;
|
---|
3856 | }
|
---|
3857 |
|
---|
3858 | local_got_offsets[indx] |= 1;
|
---|
3859 | }
|
---|
3860 | }
|
---|
3861 |
|
---|
3862 | if (off >= (bfd_vma) -2 || (off & 1) != 0)
|
---|
3863 | abort ();
|
---|
3864 |
|
---|
3865 | /* PLABELs contain function pointers. Relocation is to
|
---|
3866 | the entry for the function in the .plt. The magic +2
|
---|
3867 | offset signals to $$dyncall that the function pointer
|
---|
3868 | is in the .plt and thus has a gp pointer too.
|
---|
3869 | Exception: Undefined PLABELs should have a value of
|
---|
3870 | zero. */
|
---|
3871 | if (h == NULL
|
---|
3872 | || (h->elf.root.type != bfd_link_hash_undefweak
|
---|
3873 | && h->elf.root.type != bfd_link_hash_undefined))
|
---|
3874 | {
|
---|
3875 | relocation = (off
|
---|
3876 | + hplink->splt->output_offset
|
---|
3877 | + hplink->splt->output_section->vma
|
---|
3878 | + 2);
|
---|
3879 | }
|
---|
3880 | plabel = 1;
|
---|
3881 | }
|
---|
3882 | /* Fall through and possibly emit a dynamic relocation. */
|
---|
3883 |
|
---|
3884 | case R_PARISC_DIR17F:
|
---|
3885 | case R_PARISC_DIR17R:
|
---|
3886 | case R_PARISC_DIR14F:
|
---|
3887 | case R_PARISC_DIR14R:
|
---|
3888 | case R_PARISC_DIR21L:
|
---|
3889 | case R_PARISC_DPREL14F:
|
---|
3890 | case R_PARISC_DPREL14R:
|
---|
3891 | case R_PARISC_DPREL21L:
|
---|
3892 | case R_PARISC_DIR32:
|
---|
3893 | /* The reloc types handled here and this conditional
|
---|
3894 | expression must match the code in check_relocs and
|
---|
3895 | hppa_discard_copies. ie. We need exactly the same
|
---|
3896 | condition as in check_relocs, with some extra conditions
|
---|
3897 | (dynindx test in this case) to cater for relocs removed
|
---|
3898 | by hppa_discard_copies. */
|
---|
3899 | if ((input_section->flags & SEC_ALLOC) != 0
|
---|
3900 | && info->shared
|
---|
3901 | #if RELATIVE_DYNAMIC_RELOCS
|
---|
3902 | && (is_absolute_reloc (r_type)
|
---|
3903 | || ((!info->symbolic
|
---|
3904 | || (h != NULL
|
---|
3905 | && ((h->elf.elf_link_hash_flags
|
---|
3906 | & ELF_LINK_HASH_DEF_REGULAR) == 0
|
---|
3907 | || h->elf.root.type == bfd_link_hash_defweak)))
|
---|
3908 | && (h == NULL || h->elf.dynindx != -1)))
|
---|
3909 | #endif
|
---|
3910 | )
|
---|
3911 | {
|
---|
3912 | Elf_Internal_Rela outrel;
|
---|
3913 | boolean skip;
|
---|
3914 |
|
---|
3915 | /* When generating a shared object, these relocations
|
---|
3916 | are copied into the output file to be resolved at run
|
---|
3917 | time. */
|
---|
3918 |
|
---|
3919 | if (sreloc == NULL)
|
---|
3920 | {
|
---|
3921 | const char *name;
|
---|
3922 |
|
---|
3923 | name = (bfd_elf_string_from_elf_section
|
---|
3924 | (input_bfd,
|
---|
3925 | elf_elfheader (input_bfd)->e_shstrndx,
|
---|
3926 | elf_section_data (input_section)->rel_hdr.sh_name));
|
---|
3927 | if (name == NULL)
|
---|
3928 | return false;
|
---|
3929 | sreloc = bfd_get_section_by_name (dynobj, name);
|
---|
3930 | if (sreloc == NULL)
|
---|
3931 | abort ();
|
---|
3932 | }
|
---|
3933 |
|
---|
3934 | outrel.r_offset = rel->r_offset;
|
---|
3935 | outrel.r_addend = rel->r_addend;
|
---|
3936 | skip = false;
|
---|
3937 | if (elf_section_data (input_section)->stab_info != NULL)
|
---|
3938 | {
|
---|
3939 | bfd_vma off;
|
---|
3940 |
|
---|
3941 | off = (_bfd_stab_section_offset
|
---|
3942 | (output_bfd, &hplink->root.stab_info,
|
---|
3943 | input_section,
|
---|
3944 | &elf_section_data (input_section)->stab_info,
|
---|
3945 | rel->r_offset));
|
---|
3946 | if (off == (bfd_vma) -1)
|
---|
3947 | skip = true;
|
---|
3948 | outrel.r_offset = off;
|
---|
3949 | }
|
---|
3950 |
|
---|
3951 | outrel.r_offset += (input_section->output_offset
|
---|
3952 | + input_section->output_section->vma);
|
---|
3953 |
|
---|
3954 | if (skip)
|
---|
3955 | {
|
---|
3956 | memset (&outrel, 0, sizeof (outrel));
|
---|
3957 | }
|
---|
3958 | else if (h != NULL
|
---|
3959 | && h->elf.dynindx != -1
|
---|
3960 | && (plabel
|
---|
3961 | || !info->symbolic
|
---|
3962 | || (h->elf.elf_link_hash_flags
|
---|
3963 | & ELF_LINK_HASH_DEF_REGULAR) == 0))
|
---|
3964 | {
|
---|
3965 | outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type);
|
---|
3966 | }
|
---|
3967 | else /* It's a local symbol, or one marked to become local. */
|
---|
3968 | {
|
---|
3969 | int indx = 0;
|
---|
3970 |
|
---|
3971 | /* Add the absolute offset of the symbol. */
|
---|
3972 | outrel.r_addend += relocation;
|
---|
3973 |
|
---|
3974 | /* Global plabels need to be processed by the
|
---|
3975 | dynamic linker so that functions have at most one
|
---|
3976 | fptr. For this reason, we need to differentiate
|
---|
3977 | between global and local plabels, which we do by
|
---|
3978 | providing the function symbol for a global plabel
|
---|
3979 | reloc, and no symbol for local plabels. */
|
---|
3980 | if (! plabel
|
---|
3981 | && sym_sec != NULL
|
---|
3982 | && sym_sec->output_section != NULL
|
---|
3983 | && ! bfd_is_abs_section (sym_sec))
|
---|
3984 | {
|
---|
3985 | indx = elf_section_data (sym_sec->output_section)->dynindx;
|
---|
3986 | /* We are turning this relocation into one
|
---|
3987 | against a section symbol, so subtract out the
|
---|
3988 | output section's address but not the offset
|
---|
3989 | of the input section in the output section. */
|
---|
3990 | outrel.r_addend -= sym_sec->output_section->vma;
|
---|
3991 | }
|
---|
3992 |
|
---|
3993 | outrel.r_info = ELF32_R_INFO (indx, r_type);
|
---|
3994 | }
|
---|
3995 |
|
---|
3996 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,
|
---|
3997 | ((Elf32_External_Rela *)
|
---|
3998 | sreloc->contents
|
---|
3999 | + sreloc->reloc_count));
|
---|
4000 | ++sreloc->reloc_count;
|
---|
4001 | }
|
---|
4002 | break;
|
---|
4003 |
|
---|
4004 | default:
|
---|
4005 | break;
|
---|
4006 | }
|
---|
4007 |
|
---|
4008 | r = final_link_relocate (input_section, contents, rel, relocation,
|
---|
4009 | hplink, sym_sec, h);
|
---|
4010 |
|
---|
4011 | if (r == bfd_reloc_ok)
|
---|
4012 | continue;
|
---|
4013 |
|
---|
4014 | if (h != NULL)
|
---|
4015 | sym_name = h->elf.root.root.string;
|
---|
4016 | else
|
---|
4017 | {
|
---|
4018 | sym_name = bfd_elf_string_from_elf_section (input_bfd,
|
---|
4019 | symtab_hdr->sh_link,
|
---|
4020 | sym->st_name);
|
---|
4021 | if (sym_name == NULL)
|
---|
4022 | return false;
|
---|
4023 | if (*sym_name == '\0')
|
---|
4024 | sym_name = bfd_section_name (input_bfd, sym_sec);
|
---|
4025 | }
|
---|
4026 |
|
---|
4027 | howto = elf_hppa_howto_table + r_type;
|
---|
4028 |
|
---|
4029 | if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported)
|
---|
4030 | {
|
---|
4031 | (*_bfd_error_handler)
|
---|
4032 | (_("%s(%s+0x%lx): cannot handle %s for %s"),
|
---|
4033 | bfd_get_filename (input_bfd),
|
---|
4034 | input_section->name,
|
---|
4035 | (long) rel->r_offset,
|
---|
4036 | howto->name,
|
---|
4037 | sym_name);
|
---|
4038 | }
|
---|
4039 | else
|
---|
4040 | {
|
---|
4041 | if (!((*info->callbacks->reloc_overflow)
|
---|
4042 | (info, sym_name, howto->name, (bfd_vma) 0,
|
---|
4043 | input_bfd, input_section, rel->r_offset)))
|
---|
4044 | return false;
|
---|
4045 | }
|
---|
4046 | }
|
---|
4047 |
|
---|
4048 | return true;
|
---|
4049 | }
|
---|
4050 |
|
---|
4051 | /* Comparison function for qsort to sort unwind section during a
|
---|
4052 | final link. */
|
---|
4053 |
|
---|
4054 | static int
|
---|
4055 | hppa_unwind_entry_compare (a, b)
|
---|
4056 | const PTR a;
|
---|
4057 | const PTR b;
|
---|
4058 | {
|
---|
4059 | const bfd_byte *ap, *bp;
|
---|
4060 | unsigned long av, bv;
|
---|
4061 |
|
---|
4062 | ap = (const bfd_byte *) a;
|
---|
4063 | av = (unsigned long) ap[0] << 24;
|
---|
4064 | av |= (unsigned long) ap[1] << 16;
|
---|
4065 | av |= (unsigned long) ap[2] << 8;
|
---|
4066 | av |= (unsigned long) ap[3];
|
---|
4067 |
|
---|
4068 | bp = (const bfd_byte *) b;
|
---|
4069 | bv = (unsigned long) bp[0] << 24;
|
---|
4070 | bv |= (unsigned long) bp[1] << 16;
|
---|
4071 | bv |= (unsigned long) bp[2] << 8;
|
---|
4072 | bv |= (unsigned long) bp[3];
|
---|
4073 |
|
---|
4074 | return av < bv ? -1 : av > bv ? 1 : 0;
|
---|
4075 | }
|
---|
4076 |
|
---|
4077 | /* Finish up dynamic symbol handling. We set the contents of various
|
---|
4078 | dynamic sections here. */
|
---|
4079 |
|
---|
4080 | static boolean
|
---|
4081 | elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
|
---|
4082 | bfd *output_bfd;
|
---|
4083 | struct bfd_link_info *info;
|
---|
4084 | struct elf_link_hash_entry *h;
|
---|
4085 | Elf_Internal_Sym *sym;
|
---|
4086 | {
|
---|
4087 | struct elf32_hppa_link_hash_table *hplink;
|
---|
4088 | bfd *dynobj;
|
---|
4089 |
|
---|
4090 | hplink = hppa_link_hash_table (info);
|
---|
4091 | dynobj = hplink->root.dynobj;
|
---|
4092 |
|
---|
4093 | if (h->plt.offset != (bfd_vma) -1)
|
---|
4094 | {
|
---|
4095 | bfd_vma value;
|
---|
4096 |
|
---|
4097 | if (h->plt.offset & 1)
|
---|
4098 | abort ();
|
---|
4099 |
|
---|
4100 | /* This symbol has an entry in the procedure linkage table. Set
|
---|
4101 | it up.
|
---|
4102 |
|
---|
4103 | The format of a plt entry is
|
---|
4104 | <funcaddr>
|
---|
4105 | <__gp>
|
---|
4106 | */
|
---|
4107 | value = 0;
|
---|
4108 | if (h->root.type == bfd_link_hash_defined
|
---|
4109 | || h->root.type == bfd_link_hash_defweak)
|
---|
4110 | {
|
---|
4111 | value = h->root.u.def.value;
|
---|
4112 | if (h->root.u.def.section->output_section != NULL)
|
---|
4113 | value += (h->root.u.def.section->output_offset
|
---|
4114 | + h->root.u.def.section->output_section->vma);
|
---|
4115 | }
|
---|
4116 |
|
---|
4117 | if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
|
---|
4118 | {
|
---|
4119 | Elf_Internal_Rela rel;
|
---|
4120 |
|
---|
4121 | /* Create a dynamic IPLT relocation for this entry. */
|
---|
4122 | rel.r_offset = (h->plt.offset
|
---|
4123 | + hplink->splt->output_offset
|
---|
4124 | + hplink->splt->output_section->vma);
|
---|
4125 | if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs
|
---|
4126 | && h->dynindx != -1)
|
---|
4127 | {
|
---|
4128 | /* To support lazy linking, the function pointer is
|
---|
4129 | initialised to point to a special stub stored at the
|
---|
4130 | end of the .plt. This is not done for plt entries
|
---|
4131 | with a base-relative dynamic relocation. */
|
---|
4132 | value = (hplink->splt->output_offset
|
---|
4133 | + hplink->splt->output_section->vma
|
---|
4134 | + hplink->splt->_raw_size
|
---|
4135 | - sizeof (plt_stub)
|
---|
4136 | + PLT_STUB_ENTRY);
|
---|
4137 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
|
---|
4138 | rel.r_addend = 0;
|
---|
4139 | }
|
---|
4140 | else
|
---|
4141 | {
|
---|
4142 | /* This symbol has been marked to become local, and is
|
---|
4143 | used by a plabel so must be kept in the .plt. */
|
---|
4144 | rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
|
---|
4145 | rel.r_addend = value;
|
---|
4146 | }
|
---|
4147 |
|
---|
4148 | bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner,
|
---|
4149 | &rel,
|
---|
4150 | ((Elf32_External_Rela *)
|
---|
4151 | hplink->srelplt->contents
|
---|
4152 | + hplink->srelplt->reloc_count));
|
---|
4153 | hplink->srelplt->reloc_count++;
|
---|
4154 | }
|
---|
4155 |
|
---|
4156 | bfd_put_32 (hplink->splt->owner,
|
---|
4157 | value,
|
---|
4158 | hplink->splt->contents + h->plt.offset);
|
---|
4159 | bfd_put_32 (hplink->splt->owner,
|
---|
4160 | elf_gp (hplink->splt->output_section->owner),
|
---|
4161 | hplink->splt->contents + h->plt.offset + 4);
|
---|
4162 | if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
|
---|
4163 | && ((struct elf32_hppa_link_hash_entry *) h)->plabel
|
---|
4164 | && h->dynindx != -1)
|
---|
4165 | {
|
---|
4166 | memset (hplink->splt->contents + h->plt.offset + 8,
|
---|
4167 | 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE);
|
---|
4168 | }
|
---|
4169 |
|
---|
4170 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
|
---|
4171 | {
|
---|
4172 | /* Mark the symbol as undefined, rather than as defined in
|
---|
4173 | the .plt section. Leave the value alone. */
|
---|
4174 | sym->st_shndx = SHN_UNDEF;
|
---|
4175 | }
|
---|
4176 | }
|
---|
4177 |
|
---|
4178 | if (h->got.offset != (bfd_vma) -1)
|
---|
4179 | {
|
---|
4180 | Elf_Internal_Rela rel;
|
---|
4181 |
|
---|
4182 | /* This symbol has an entry in the global offset table. Set it
|
---|
4183 | up. */
|
---|
4184 |
|
---|
4185 | rel.r_offset = ((h->got.offset &~ (bfd_vma) 1)
|
---|
4186 | + hplink->sgot->output_offset
|
---|
4187 | + hplink->sgot->output_section->vma);
|
---|
4188 |
|
---|
4189 | /* If this is a -Bsymbolic link and the symbol is defined
|
---|
4190 | locally or was forced to be local because of a version file,
|
---|
4191 | we just want to emit a RELATIVE reloc. The entry in the
|
---|
4192 | global offset table will already have been initialized in the
|
---|
4193 | relocate_section function. */
|
---|
4194 | if (info->shared
|
---|
4195 | && (info->symbolic || h->dynindx == -1)
|
---|
4196 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
|
---|
4197 | {
|
---|
4198 | rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
|
---|
4199 | rel.r_addend = (h->root.u.def.value
|
---|
4200 | + h->root.u.def.section->output_offset
|
---|
4201 | + h->root.u.def.section->output_section->vma);
|
---|
4202 | }
|
---|
4203 | else
|
---|
4204 | {
|
---|
4205 | if ((h->got.offset & 1) != 0)
|
---|
4206 | abort ();
|
---|
4207 | bfd_put_32 (output_bfd, (bfd_vma) 0,
|
---|
4208 | hplink->sgot->contents + h->got.offset);
|
---|
4209 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32);
|
---|
4210 | rel.r_addend = 0;
|
---|
4211 | }
|
---|
4212 |
|
---|
4213 | bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
---|
4214 | ((Elf32_External_Rela *)
|
---|
4215 | hplink->srelgot->contents
|
---|
4216 | + hplink->srelgot->reloc_count));
|
---|
4217 | ++hplink->srelgot->reloc_count;
|
---|
4218 | }
|
---|
4219 |
|
---|
4220 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
|
---|
4221 | {
|
---|
4222 | asection *s;
|
---|
4223 | Elf_Internal_Rela rel;
|
---|
4224 |
|
---|
4225 | /* This symbol needs a copy reloc. Set it up. */
|
---|
4226 |
|
---|
4227 | if (! (h->dynindx != -1
|
---|
4228 | && (h->root.type == bfd_link_hash_defined
|
---|
4229 | || h->root.type == bfd_link_hash_defweak)))
|
---|
4230 | abort ();
|
---|
4231 |
|
---|
4232 | s = hplink->srelbss;
|
---|
4233 |
|
---|
4234 | rel.r_offset = (h->root.u.def.value
|
---|
4235 | + h->root.u.def.section->output_offset
|
---|
4236 | + h->root.u.def.section->output_section->vma);
|
---|
4237 | rel.r_addend = 0;
|
---|
4238 | rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY);
|
---|
4239 | bfd_elf32_swap_reloca_out (output_bfd, &rel,
|
---|
4240 | ((Elf32_External_Rela *) s->contents
|
---|
4241 | + s->reloc_count));
|
---|
4242 | ++s->reloc_count;
|
---|
4243 | }
|
---|
4244 |
|
---|
4245 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
|
---|
4246 | if (h->root.root.string[0] == '_'
|
---|
4247 | && (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
---|
4248 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
|
---|
4249 | {
|
---|
4250 | sym->st_shndx = SHN_ABS;
|
---|
4251 | }
|
---|
4252 |
|
---|
4253 | return true;
|
---|
4254 | }
|
---|
4255 |
|
---|
4256 | /* Finish up the dynamic sections. */
|
---|
4257 |
|
---|
4258 | static boolean
|
---|
4259 | elf32_hppa_finish_dynamic_sections (output_bfd, info)
|
---|
4260 | bfd *output_bfd;
|
---|
4261 | struct bfd_link_info *info;
|
---|
4262 | {
|
---|
4263 | bfd *dynobj;
|
---|
4264 | struct elf32_hppa_link_hash_table *hplink;
|
---|
4265 | asection *sdyn;
|
---|
4266 |
|
---|
4267 | hplink = hppa_link_hash_table (info);
|
---|
4268 | dynobj = hplink->root.dynobj;
|
---|
4269 |
|
---|
4270 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
---|
4271 |
|
---|
4272 | if (hplink->root.dynamic_sections_created)
|
---|
4273 | {
|
---|
4274 | Elf32_External_Dyn *dyncon, *dynconend;
|
---|
4275 |
|
---|
4276 | if (sdyn == NULL)
|
---|
4277 | abort ();
|
---|
4278 |
|
---|
4279 | dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
---|
4280 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
|
---|
4281 | for (; dyncon < dynconend; dyncon++)
|
---|
4282 | {
|
---|
4283 | Elf_Internal_Dyn dyn;
|
---|
4284 | asection *s;
|
---|
4285 |
|
---|
4286 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
---|
4287 |
|
---|
4288 | switch (dyn.d_tag)
|
---|
4289 | {
|
---|
4290 | default:
|
---|
4291 | break;
|
---|
4292 |
|
---|
4293 | case DT_PLTGOT:
|
---|
4294 | /* Use PLTGOT to set the GOT register. */
|
---|
4295 | dyn.d_un.d_ptr = elf_gp (output_bfd);
|
---|
4296 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
---|
4297 | break;
|
---|
4298 |
|
---|
4299 | case DT_JMPREL:
|
---|
4300 | s = hplink->srelplt;
|
---|
4301 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
|
---|
4302 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
---|
4303 | break;
|
---|
4304 |
|
---|
4305 | case DT_PLTRELSZ:
|
---|
4306 | s = hplink->srelplt;
|
---|
4307 | if (s->_cooked_size != 0)
|
---|
4308 | dyn.d_un.d_val = s->_cooked_size;
|
---|
4309 | else
|
---|
4310 | dyn.d_un.d_val = s->_raw_size;
|
---|
4311 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
---|
4312 | break;
|
---|
4313 | }
|
---|
4314 | }
|
---|
4315 | }
|
---|
4316 |
|
---|
4317 | if (hplink->sgot->_raw_size != 0)
|
---|
4318 | {
|
---|
4319 | /* Fill in the first entry in the global offset table.
|
---|
4320 | We use it to point to our dynamic section, if we have one. */
|
---|
4321 | bfd_put_32 (output_bfd,
|
---|
4322 | (sdyn != NULL
|
---|
4323 | ? sdyn->output_section->vma + sdyn->output_offset
|
---|
4324 | : (bfd_vma) 0),
|
---|
4325 | hplink->sgot->contents);
|
---|
4326 |
|
---|
4327 | /* The second entry is reserved for use by the dynamic linker. */
|
---|
4328 | memset (hplink->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
|
---|
4329 |
|
---|
4330 | /* Set .got entry size. */
|
---|
4331 | elf_section_data (hplink->sgot->output_section)
|
---|
4332 | ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
|
---|
4333 | }
|
---|
4334 |
|
---|
4335 | if (hplink->splt->_raw_size != 0)
|
---|
4336 | {
|
---|
4337 | /* Set plt entry size. */
|
---|
4338 | elf_section_data (hplink->splt->output_section)
|
---|
4339 | ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
|
---|
4340 |
|
---|
4341 | if (hplink->need_plt_stub)
|
---|
4342 | {
|
---|
4343 | /* Set up the .plt stub. */
|
---|
4344 | memcpy (hplink->splt->contents
|
---|
4345 | + hplink->splt->_raw_size - sizeof (plt_stub),
|
---|
4346 | plt_stub, sizeof (plt_stub));
|
---|
4347 |
|
---|
4348 | if ((hplink->splt->output_offset
|
---|
4349 | + hplink->splt->output_section->vma
|
---|
4350 | + hplink->splt->_raw_size)
|
---|
4351 | != (hplink->sgot->output_offset
|
---|
4352 | + hplink->sgot->output_section->vma))
|
---|
4353 | {
|
---|
4354 | (*_bfd_error_handler)
|
---|
4355 | (_(".got section not immediately after .plt section"));
|
---|
4356 | return false;
|
---|
4357 | }
|
---|
4358 | }
|
---|
4359 | }
|
---|
4360 |
|
---|
4361 | return true;
|
---|
4362 | }
|
---|
4363 |
|
---|
4364 | /* Tweak the OSABI field of the elf header. */
|
---|
4365 |
|
---|
4366 | static void
|
---|
4367 | elf32_hppa_post_process_headers (abfd, link_info)
|
---|
4368 | bfd *abfd;
|
---|
4369 | struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
|
---|
4370 | {
|
---|
4371 | Elf_Internal_Ehdr * i_ehdrp;
|
---|
4372 |
|
---|
4373 | i_ehdrp = elf_elfheader (abfd);
|
---|
4374 |
|
---|
4375 | if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
|
---|
4376 | {
|
---|
4377 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
|
---|
4378 | }
|
---|
4379 | else
|
---|
4380 | {
|
---|
4381 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
|
---|
4382 | }
|
---|
4383 | }
|
---|
4384 |
|
---|
4385 | /* Called when writing out an object file to decide the type of a
|
---|
4386 | symbol. */
|
---|
4387 | static int
|
---|
4388 | elf32_hppa_elf_get_symbol_type (elf_sym, type)
|
---|
4389 | Elf_Internal_Sym *elf_sym;
|
---|
4390 | int type;
|
---|
4391 | {
|
---|
4392 | if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
|
---|
4393 | return STT_PARISC_MILLI;
|
---|
4394 | else
|
---|
4395 | return type;
|
---|
4396 | }
|
---|
4397 |
|
---|
4398 | /* Misc BFD support code. */
|
---|
4399 | #define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
|
---|
4400 | #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
|
---|
4401 | #define elf_info_to_howto elf_hppa_info_to_howto
|
---|
4402 | #define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
|
---|
4403 |
|
---|
4404 | /* Stuff for the BFD linker. */
|
---|
4405 | #define bfd_elf32_bfd_final_link elf32_hppa_final_link
|
---|
4406 | #define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
|
---|
4407 | #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
|
---|
4408 | #define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
|
---|
4409 | #define elf_backend_check_relocs elf32_hppa_check_relocs
|
---|
4410 | #define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
|
---|
4411 | #define elf_backend_fake_sections elf_hppa_fake_sections
|
---|
4412 | #define elf_backend_relocate_section elf32_hppa_relocate_section
|
---|
4413 | #define elf_backend_hide_symbol elf32_hppa_hide_symbol
|
---|
4414 | #define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
|
---|
4415 | #define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
|
---|
4416 | #define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
|
---|
4417 | #define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
|
---|
4418 | #define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
|
---|
4419 | #define elf_backend_object_p elf32_hppa_object_p
|
---|
4420 | #define elf_backend_final_write_processing elf_hppa_final_write_processing
|
---|
4421 | #define elf_backend_post_process_headers elf32_hppa_post_process_headers
|
---|
4422 | #define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
|
---|
4423 |
|
---|
4424 | #define elf_backend_can_gc_sections 1
|
---|
4425 | #define elf_backend_plt_alignment 2
|
---|
4426 | #define elf_backend_want_got_plt 0
|
---|
4427 | #define elf_backend_plt_readonly 0
|
---|
4428 | #define elf_backend_want_plt_sym 0
|
---|
4429 | #define elf_backend_got_header_size 8
|
---|
4430 |
|
---|
4431 | #define TARGET_BIG_SYM bfd_elf32_hppa_vec
|
---|
4432 | #define TARGET_BIG_NAME "elf32-hppa"
|
---|
4433 | #define ELF_ARCH bfd_arch_hppa
|
---|
4434 | #define ELF_MACHINE_CODE EM_PARISC
|
---|
4435 | #define ELF_MAXPAGESIZE 0x1000
|
---|
4436 |
|
---|
4437 | #include "elf32-target.h"
|
---|
4438 |
|
---|
4439 | #undef TARGET_BIG_SYM
|
---|
4440 | #define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
|
---|
4441 | #undef TARGET_BIG_NAME
|
---|
4442 | #define TARGET_BIG_NAME "elf32-hppa-linux"
|
---|
4443 |
|
---|
4444 | #define INCLUDED_TARGET_FILE 1
|
---|
4445 | #include "elf32-target.h"
|
---|