| 1 | /* This file is is generated by a shell script. DO NOT EDIT! */
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| 2 |
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| 3 | /* Handle embedded relocs for MIPS.
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| 4 | Copyright 1994, 1997, 2000 Free Software Foundation, Inc.
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| 5 | Written by Ian Lance Taylor <ian@cygnus.com> based on generic.em.
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| 6 |
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| 7 | This file is part of GLD, the Gnu Linker.
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| 8 |
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| 9 | This program is free software; you can redistribute it and/or modify
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| 10 | it under the terms of the GNU General Public License as published by
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| 11 | the Free Software Foundation; either version 2 of the License, or
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| 12 | (at your option) any later version.
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| 13 |
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| 14 | This program is distributed in the hope that it will be useful,
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| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 17 | GNU General Public License for more details.
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| 18 |
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| 19 | You should have received a copy of the GNU General Public License
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| 20 | along with this program; if not, write to the Free Software
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| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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| 22 |
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| 23 | #define TARGET_IS_mipsidt
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| 24 |
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| 25 | #include "libiberty.h"
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| 26 | #include "bfd.h"
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| 27 | #include "sysdep.h"
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| 28 | #include "bfdlink.h"
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| 29 |
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| 30 | #include "ld.h"
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| 31 | #include "ldmain.h"
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| 32 | #include "ldmisc.h"
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| 33 |
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| 34 | #include "ldexp.h"
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| 35 | #include "ldlang.h"
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| 36 | #include "ldfile.h"
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| 37 | #include "ldemul.h"
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| 38 |
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| 39 | static void gldmipsidt_before_parse PARAMS ((void));
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| 40 | static void gldmipsidt_after_open PARAMS ((void));
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| 41 | static void check_sections PARAMS ((bfd *, asection *, PTR));
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| 42 | static void gldmipsidt_after_allocation PARAMS ((void));
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| 43 | static char *gldmipsidt_get_script PARAMS ((int *isfile));
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| 44 |
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| 45 | static void
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| 46 | gldmipsidt_before_parse()
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| 47 | {
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| 48 | #ifndef TARGET_ /* I.e., if not generic. */
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| 49 | ldfile_output_architecture = bfd_arch_mips;
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| 50 | #endif /* not TARGET_ */
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| 51 | }
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| 52 |
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| 53 | /* This function is run after all the input files have been opened.
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| 54 | We create a .rel.sdata section for each input file with a non zero
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| 55 | .sdata section. The BFD backend will fill in these sections with
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| 56 | magic numbers which can be used to relocate the data section at run
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| 57 | time. This will only do the right thing if all the input files
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| 58 | have been compiled using -membedded-pic. */
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| 59 |
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| 60 | static void
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| 61 | gldmipsidt_after_open ()
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| 62 | {
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| 63 | bfd *abfd;
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| 64 |
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| 65 | if (! command_line.embedded_relocs
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| 66 | || link_info.relocateable)
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| 67 | return;
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| 68 |
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| 69 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
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| 70 | {
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| 71 | asection *datasec;
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| 72 |
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| 73 | datasec = bfd_get_section_by_name (abfd, ".sdata");
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| 74 |
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| 75 | /* Note that we assume that the reloc_count field has already
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| 76 | been set up. We could call bfd_get_reloc_upper_bound, but
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| 77 | that returns the size of a memory buffer rather than a reloc
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| 78 | count. We do not want to call bfd_canonicalize_reloc,
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| 79 | because although it would always work it would force us to
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| 80 | read in the relocs into BFD canonical form, which would waste
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| 81 | a significant amount of time and memory. */
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| 82 | if (datasec != NULL && datasec->reloc_count > 0)
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| 83 | {
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| 84 | asection *relsec;
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| 85 |
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| 86 | relsec = bfd_make_section (abfd, ".rel.sdata");
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| 87 | if (relsec == NULL
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| 88 | || ! bfd_set_section_flags (abfd, relsec,
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| 89 | (SEC_ALLOC
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| 90 | | SEC_LOAD
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| 91 | | SEC_HAS_CONTENTS
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| 92 | | SEC_IN_MEMORY))
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| 93 | || ! bfd_set_section_alignment (abfd, relsec, 2)
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| 94 | || ! bfd_set_section_size (abfd, relsec,
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| 95 | datasec->reloc_count * 4))
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| 96 | einfo (_("%F%B: can not create .rel.sdata section: %E\n"));
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| 97 | }
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| 98 |
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| 99 | /* Double check that all other data sections are empty, as is
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| 100 | required for embedded PIC code. */
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| 101 | bfd_map_over_sections (abfd, check_sections, (PTR) datasec);
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| 102 | }
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| 103 | }
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| 104 |
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| 105 | /* Check that of the data sections, only the .sdata section has
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| 106 | relocs. This is called via bfd_map_over_sections. */
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| 107 |
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| 108 | static void
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| 109 | check_sections (abfd, sec, sdatasec)
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| 110 | bfd *abfd;
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| 111 | asection *sec;
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| 112 | PTR sdatasec;
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| 113 | {
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| 114 | if ((bfd_get_section_flags (abfd, sec) & SEC_CODE) == 0
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| 115 | && sec != (asection *) sdatasec
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| 116 | && sec->reloc_count != 0)
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| 117 | einfo (_("%F%X: section %s has relocs; can not use --embedded-relocs\n"),
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| 118 | abfd, bfd_get_section_name (abfd, sec));
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| 119 | }
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| 120 |
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| 121 | /* This function is called after the section sizes and offsets have
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| 122 | been set. If we are generating embedded relocs, it calls a special
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| 123 | BFD backend routine to do the work. */
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| 124 |
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| 125 | static void
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| 126 | gldmipsidt_after_allocation ()
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| 127 | {
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| 128 | bfd *abfd;
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| 129 |
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| 130 | if (! command_line.embedded_relocs
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| 131 | || link_info.relocateable)
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| 132 | return;
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| 133 |
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| 134 | for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
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| 135 | {
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| 136 | asection *datasec, *relsec;
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| 137 | char *errmsg;
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| 138 |
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| 139 | datasec = bfd_get_section_by_name (abfd, ".sdata");
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| 140 |
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| 141 | if (datasec == NULL || datasec->reloc_count == 0)
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| 142 | continue;
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| 143 |
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| 144 | relsec = bfd_get_section_by_name (abfd, ".rel.sdata");
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| 145 | ASSERT (relsec != NULL);
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| 146 |
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| 147 | if (! bfd_mips_ecoff_create_embedded_relocs (abfd, &link_info,
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| 148 | datasec, relsec,
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| 149 | &errmsg))
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| 150 | {
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| 151 | if (errmsg == NULL)
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| 152 | einfo (_("%B%X: can not create runtime reloc information: %E\n"),
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| 153 | abfd);
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| 154 | else
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| 155 | einfo (_("%X%B: can not create runtime reloc information: %s\n"),
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| 156 | abfd, errmsg);
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| 157 | }
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| 158 | }
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| 159 | }
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| 160 |
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| 161 | static char *
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| 162 | gldmipsidt_get_script(isfile)
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| 163 | int *isfile;
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| 164 | {
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| 165 | *isfile = 0;
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| 166 |
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| 167 | if (link_info.relocateable == true && config.build_constructors == true)
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| 168 | return
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| 169 | concat(
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| 170 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\
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| 171 | \"ecoff-littlemips\")\n\
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| 172 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\
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| 173 | ENTRY(start)\n\
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| 174 | SECTIONS\n\
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| 175 | {\n\
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| 176 | .text : {\n\
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| 177 | ;\n\
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| 178 | *(.init)\n\
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| 179 | ;\n\
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| 180 | *(.text)\n\
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| 181 | *(.rel.sdata)\n\
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| 182 | *(.fini)\n\
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| 183 | ;\n\
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| 184 | ;\n\
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| 185 | }\n\
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| 186 | "," .rdata : {\n\
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| 187 | *(.rdata)\n\
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| 188 | }\n\
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| 189 | .data : {\n\
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| 190 | *(.data)\n\
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| 191 | CONSTRUCTORS\n\
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| 192 | }\n\
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| 193 | .lit8 : {\n\
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| 194 | *(.lit8)\n\
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| 195 | }\n\
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| 196 | .lit4 : {\n\
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| 197 | *(.lit4)\n\
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| 198 | }\n\
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| 199 | "," .sdata : {\n\
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| 200 | *(.sdata)\n\
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| 201 | }\n\
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| 202 | .sbss : {\n\
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| 203 | *(.sbss)\n\
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| 204 | *(.scommon)\n\
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| 205 | }\n\
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| 206 | .bss : {\n\
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| 207 | *(.bss)\n\
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| 208 | *(COMMON)\n\
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| 209 | }\n\
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| 210 | }\n\n", NULL)
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| 211 | ; else if (link_info.relocateable == true) return
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| 212 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\
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| 213 | \"ecoff-littlemips\")\n\
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| 214 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\
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| 215 | ENTRY(start)\n\
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| 216 | SECTIONS\n\
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| 217 | {\n\
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| 218 | .text : {\n\
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| 219 | ;\n\
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| 220 | *(.init)\n\
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| 221 | ;\n\
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| 222 | *(.text)\n\
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| 223 | *(.rel.sdata)\n\
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| 224 | *(.fini)\n\
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| 225 | ;\n\
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| 226 | ;\n\
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| 227 | }\n\
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| 228 | .rdata : {\n\
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| 229 | *(.rdata)\n\
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| 230 | }\n\
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| 231 | .data : {\n\
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| 232 | *(.data)\n\
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| 233 | }\n\
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| 234 | .lit8 : {\n\
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| 235 | *(.lit8)\n\
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| 236 | }\n\
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| 237 | .lit4 : {\n\
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| 238 | *(.lit4)\n\
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| 239 | }\n\
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| 240 | .sdata : {\n\
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| 241 | *(.sdata)\n\
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| 242 | }\n\
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| 243 | .sbss : {\n\
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| 244 | *(.sbss)\n\
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| 245 | *(.scommon)\n\
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| 246 | }\n\
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| 247 | .bss : {\n\
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| 248 | *(.bss)\n\
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| 249 | *(COMMON)\n\
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| 250 | }\n\
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| 251 | }\n\n"
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| 252 | ; else if (!config.text_read_only) return
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| 253 | concat(
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| 254 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\
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| 255 | \"ecoff-littlemips\")\n\
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| 256 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\
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| 257 | ENTRY(start)\n\
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| 258 | SECTIONS\n\
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| 259 | {\n\
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| 260 | . = 0xa0012000;\n\
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| 261 | .text : {\n\
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| 262 | _ftext = . ;\n\
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| 263 | *(.init)\n\
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| 264 | eprol = .;\n\
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| 265 | *(.text)\n\
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| 266 | PROVIDE (__runtime_reloc_start = .);\n\
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| 267 | *(.rel.sdata)\n\
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| 268 | PROVIDE (__runtime_reloc_stop = .);\n\
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| 269 | *(.fini)\n\
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| 270 | etext = .;\n\
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| 271 | _etext = .;\n\
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| 272 | "," }\n\
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| 273 | . = .;\n\
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| 274 | .rdata : {\n\
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| 275 | *(.rdata)\n\
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| 276 | }\n\
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| 277 | _fdata = ALIGN(16);\n\
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| 278 | .data : {\n\
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| 279 | *(.data)\n\
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| 280 | CONSTRUCTORS\n\
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| 281 | }\n\
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| 282 | _gp = ALIGN(16) + 0x8000;\n\
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| 283 | .lit8 : {\n\
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| 284 | *(.lit8)\n\
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| 285 | }\n\
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| 286 | .lit4 : {\n\
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| 287 | *(.lit4)\n\
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| 288 | }\n\
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| 289 | .sdata : {\n\
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| 290 | *(.sdata)\n\
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| 291 | }\n\
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| 292 | "," edata = .;\n\
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| 293 | _edata = .;\n\
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| 294 | _fbss = .;\n\
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| 295 | .sbss : {\n\
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| 296 | *(.sbss)\n\
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| 297 | *(.scommon)\n\
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| 298 | }\n\
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| 299 | .bss : {\n\
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| 300 | *(.bss)\n\
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| 301 | *(COMMON)\n\
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| 302 | }\n\
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| 303 | end = .;\n\
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| 304 | _end = .;\n\
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| 305 | }\n\n"
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| 306 | , NULL)
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| 307 | ; else if (!config.magic_demand_paged) return
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| 308 | concat (
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| 309 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\
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| 310 | \"ecoff-littlemips\")\n\
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| 311 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\
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| 312 | ENTRY(start)\n\
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| 313 | SECTIONS\n\
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| 314 | {\n\
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| 315 | . = 0xa0012000;\n\
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| 316 | .text : {\n\
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| 317 | _ftext = . ;\n\
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| 318 | *(.init)\n\
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| 319 | eprol = .;\n\
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| 320 | *(.text)\n\
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| 321 | PROVIDE (__runtime_reloc_start = .);\n\
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| 322 | *(.rel.sdata)\n\
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| 323 | PROVIDE (__runtime_reloc_stop = .);\n\
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| 324 | *(.fini)\n\
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| 325 | etext = .;\n\
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| 326 | _etext = .;\n\
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| 327 | "," }\n\
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| 328 | . = .;\n\
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| 329 | .rdata : {\n\
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| 330 | *(.rdata)\n\
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| 331 | }\n\
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| 332 | _fdata = ALIGN(16);\n\
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| 333 | .data : {\n\
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| 334 | *(.data)\n\
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| 335 | CONSTRUCTORS\n\
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| 336 | }\n\
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| 337 | _gp = ALIGN(16) + 0x8000;\n\
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| 338 | .lit8 : {\n\
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| 339 | *(.lit8)\n\
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| 340 | "," }\n\
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| 341 | .lit4 : {\n\
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| 342 | *(.lit4)\n\
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| 343 | }\n\
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| 344 | .sdata : {\n\
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| 345 | *(.sdata)\n\
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| 346 | }\n\
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| 347 | edata = .;\n\
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| 348 | _edata = .;\n\
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| 349 | _fbss = .;\n\
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| 350 | .sbss : {\n\
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| 351 | *(.sbss)\n\
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| 352 | *(.scommon)\n\
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| 353 | "," }\n\
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| 354 | .bss : {\n\
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| 355 | *(.bss)\n\
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| 356 | *(COMMON)\n\
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| 357 | }\n\
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| 358 | end = .;\n\
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| 359 | _end = .;\n\
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| 360 | }\n\n"
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| 361 | , NULL)
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| 362 | ; else return
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| 363 | concat (
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| 364 | "OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\
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| 365 | \"ecoff-littlemips\")\n\
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| 366 | SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\
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| 367 | ENTRY(start)\n\
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| 368 | SECTIONS\n\
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| 369 | {\n\
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| 370 | . = 0xa0012000;\n\
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| 371 | .text : {\n\
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| 372 | _ftext = . ;\n\
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| 373 | *(.init)\n\
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| 374 | eprol = .;\n\
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| 375 | *(.text)\n\
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| 376 | PROVIDE (__runtime_reloc_start = .);\n\
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| 377 | *(.rel.sdata)\n\
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| 378 | PROVIDE (__runtime_reloc_stop = .);\n\
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| 379 | *(.fini)\n\
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| 380 | etext = .;\n\
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| 381 | _etext = .;\n\
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| 382 | "," }\n\
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| 383 | . = .;\n\
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| 384 | .rdata : {\n\
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| 385 | *(.rdata)\n\
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| 386 | }\n\
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| 387 | _fdata = ALIGN(16);\n\
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| 388 | .data : {\n\
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| 389 | *(.data)\n\
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| 390 | CONSTRUCTORS\n\
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| 391 | }\n\
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| 392 | _gp = ALIGN(16) + 0x8000;\n\
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| 393 | .lit8 : {\n\
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| 394 | *(.lit8)\n\
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| 395 | }\n\
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| 396 | .lit4 : {\n\
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| 397 | *(.lit4)\n\
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| 398 | "," }\n\
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| 399 | .sdata : {\n\
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| 400 | *(.sdata)\n\
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| 401 | }\n\
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| 402 | edata = .;\n\
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| 403 | _edata = .;\n\
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| 404 | _fbss = .;\n\
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| 405 | .sbss : {\n\
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| 406 | *(.sbss)\n\
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| 407 | *(.scommon)\n\
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| 408 | }\n\
|
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| 409 | .bss : {\n\
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| 410 | *(.bss)\n\
|
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| 411 | *(COMMON)\n\
|
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| 412 | }\n\
|
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| 413 | end = .;\n\
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| 414 | _end = .;\n\
|
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| 415 | }\n\n"
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| 416 | , NULL)
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| 417 | ; }
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| 418 |
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| 419 | struct ld_emulation_xfer_struct ld_mipsidt_emulation =
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| 420 | {
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| 421 | gldmipsidt_before_parse,
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| 422 | syslib_default,
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| 423 | hll_default,
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| 424 | after_parse_default,
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| 425 | gldmipsidt_after_open,
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| 426 | gldmipsidt_after_allocation,
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| 427 | set_output_arch_default,
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| 428 | ldemul_default_target,
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| 429 | before_allocation_default,
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|---|
| 430 | gldmipsidt_get_script,
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| 431 | "mipsidt",
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|---|
| 432 | "ecoff-bigmips"
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|---|
| 433 | };
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