1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 cat >e${EMULATION_NAME}.c <<EOF
4 /* This file is is generated by a shell script. DO NOT EDIT! */
6 /* Handle embedded relocs for m68k.
7 Copyright 2000 Free Software Foundation, Inc.
8 Written by Michael Sokolov <msokolov@ivan.Harhan.ORG>, based on generic.em
9 by Steve Chamberlain <steve@cygnus.com>, embedded relocs code based on
10 mipsecoff.em by Ian Lance Taylor <ian@cygnus.com>.
12 This file is part of GLD, the Gnu Linker.
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
28 #define TARGET_IS_${EMULATION_NAME}
40 static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
41 static void gld${EMULATION_NAME}_after_open PARAMS ((void));
42 static void check_sections PARAMS ((bfd *, asection *, PTR));
43 static void gld${EMULATION_NAME}_after_allocation PARAMS ((void));
44 static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
47 gld${EMULATION_NAME}_before_parse ()
49 #ifndef TARGET_ /* I.e., if not generic. */
50 ldfile_set_output_arch ("`echo ${ARCH}`");
51 #endif /* not TARGET_ */
54 /* This function is run after all the input files have been opened.
55 We create a .emreloc section for each input file with a non zero
56 .data section. The BFD backend will fill in these sections with
57 magic numbers which can be used to relocate the data section at run
61 gld${EMULATION_NAME}_after_open ()
65 if (! command_line.embedded_relocs
66 || link_info.relocateable)
69 for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
73 /* As first-order business, make sure that each input BFD is COFF. It
74 better be, as we are directly calling a COFF backend function. */
75 if (bfd_get_flavour (abfd) != bfd_target_coff_flavour)
76 einfo ("%F%B: all input objects must be COFF for --embedded-relocs\n");
78 datasec = bfd_get_section_by_name (abfd, ".data");
80 /* Note that we assume that the reloc_count field has already
81 been set up. We could call bfd_get_reloc_upper_bound, but
82 that returns the size of a memory buffer rather than a reloc
83 count. We do not want to call bfd_canonicalize_reloc,
84 because although it would always work it would force us to
85 read in the relocs into BFD canonical form, which would waste
86 a significant amount of time and memory. */
87 if (datasec != NULL && datasec->reloc_count > 0)
91 relsec = bfd_make_section (abfd, ".emreloc");
93 || ! bfd_set_section_flags (abfd, relsec,
98 || ! bfd_set_section_alignment (abfd, relsec, 2)
99 || ! bfd_set_section_size (abfd, relsec,
100 datasec->reloc_count * 12))
101 einfo ("%F%B: can not create .emreloc section: %E\n");
104 /* Double check that all other data sections are empty, as is
105 required for embedded PIC code. */
106 bfd_map_over_sections (abfd, check_sections, (PTR) datasec);
110 /* Check that of the data sections, only the .data section has
111 relocs. This is called via bfd_map_over_sections. */
114 check_sections (abfd, sec, datasec)
119 if ((bfd_get_section_flags (abfd, sec) & SEC_DATA)
120 && sec != (asection *) datasec
121 && sec->reloc_count != 0)
122 einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n",
123 abfd, bfd_get_section_name (abfd, sec));
126 /* This function is called after the section sizes and offsets have
127 been set. If we are generating embedded relocs, it calls a special
128 BFD backend routine to do the work. */
131 gld${EMULATION_NAME}_after_allocation ()
135 if (! command_line.embedded_relocs
136 || link_info.relocateable)
139 for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next)
141 asection *datasec, *relsec;
144 datasec = bfd_get_section_by_name (abfd, ".data");
146 if (datasec == NULL || datasec->reloc_count == 0)
149 relsec = bfd_get_section_by_name (abfd, ".emreloc");
150 ASSERT (relsec != NULL);
152 if (! bfd_m68k_coff_create_embedded_relocs (abfd, &link_info,
157 einfo ("%B%X: can not create runtime reloc information: %E\n",
160 einfo ("%X%B: can not create runtime reloc information: %s\n",
167 gld${EMULATION_NAME}_get_script(isfile)
171 if test -n "$COMPILE_IN"
173 # Scripts compiled in.
175 # sed commands to quote an ld script as a C string.
176 sc="-f stringify.sed"
178 cat >>e${EMULATION_NAME}.c <<EOF
182 if (link_info.relocateable == true && config.build_constructors == true)
185 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
186 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
187 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
188 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
189 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
190 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
191 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
192 echo ' ; else return' >> e${EMULATION_NAME}.c
193 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
194 echo '; }' >> e${EMULATION_NAME}.c
197 # Scripts read from the filesystem.
199 cat >>e${EMULATION_NAME}.c <<EOF
203 if (link_info.relocateable == true && config.build_constructors == true)
204 return "ldscripts/${EMULATION_NAME}.xu";
205 else if (link_info.relocateable == true)
206 return "ldscripts/${EMULATION_NAME}.xr";
207 else if (!config.text_read_only)
208 return "ldscripts/${EMULATION_NAME}.xbn";
209 else if (!config.magic_demand_paged)
210 return "ldscripts/${EMULATION_NAME}.xn";
212 return "ldscripts/${EMULATION_NAME}.x";
218 cat >>e${EMULATION_NAME}.c <<EOF
220 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
222 gld${EMULATION_NAME}_before_parse,
226 gld${EMULATION_NAME}_after_open,
227 gld${EMULATION_NAME}_after_allocation,
228 set_output_arch_default,
229 ldemul_default_target,
230 before_allocation_default,
231 gld${EMULATION_NAME}_get_script,
235 NULL, /* create output section statements */
236 NULL, /* open dynamic archive */
237 NULL, /* place orphan */
238 NULL, /* set symbols */
239 NULL, /* parse args */
240 NULL, /* unrecognized file */
241 NULL, /* list options */
242 NULL, /* recognized file */
243 NULL /* find_potential_libraries */