| 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
|
|---|
| 377 |
|
|---|
| 378 | static boolean clobber_millicode_symbols
|
|---|
| 379 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
|
|---|
| 380 |
|
|---|
| 381 | static boolean elf32_hppa_size_dynamic_sections
|
|---|
| 382 | PARAMS ((bfd *, struct bfd_link_info *));
|
|---|
| 383 |
|
|---|
| 384 | static boolean elf32_hppa_final_link
|
|---|
| 385 | PARAMS ((bfd *, struct bfd_link_info *));
|
|---|
| 386 |
|
|---|
| 387 | static void hppa_record_segment_addr
|
|---|
| 388 | PARAMS ((bfd *, asection *, PTR));
|
|---|
| 389 |
|
|---|
| 390 | static bfd_reloc_status_type final_link_relocate
|
|---|
| 391 | PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
|
|---|
| 392 | bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
|
|---|
| 393 | struct elf32_hppa_link_hash_entry *));
|
|---|
| 394 |
|
|---|
| 395 | static boolean elf32_hppa_relocate_section
|
|---|
| 396 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
|
|---|
| 397 | bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
|
|---|
| 398 |
|
|---|
| 399 | static int hppa_unwind_entry_compare
|
|---|
| 400 | PARAMS ((const PTR, const PTR));
|
|---|
| 401 |
|
|---|
| 402 | static boolean elf32_hppa_finish_dynamic_symbol
|
|---|
| 403 | PARAMS ((bfd *, struct bfd_link_info *,
|
|---|
| 404 | struct elf_link_hash_entry *, Elf_Internal_Sym *));
|
|---|
| 405 |
|
|---|
| 406 | static boolean elf32_hppa_finish_dynamic_sections
|
|---|
| 407 | PARAMS ((bfd *, struct bfd_link_info *));
|
|---|
| 408 |
|
|---|
| 409 | static void elf32_hppa_post_process_headers
|
|---|
| 410 | PARAMS ((bfd *, struct bfd_link_info *));
|
|---|
| 411 |
|
|---|
| 412 | static int elf32_hppa_elf_get_symbol_type
|
|---|
| 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"
|
|---|