diff options
Diffstat (limited to 'ld/emultempl/mipsecoff.em')
| -rw-r--r-- | ld/emultempl/mipsecoff.em | 255 |
1 files changed, 22 insertions, 233 deletions
diff --git a/ld/emultempl/mipsecoff.em b/ld/emultempl/mipsecoff.em index dde33c2..5d160cd 100644 --- a/ld/emultempl/mipsecoff.em +++ b/ld/emultempl/mipsecoff.em @@ -1,51 +1,30 @@ # This shell script emits a C file. -*- C -*- -# It does some substitutions. +# Copyright 1994, 1995, 1997, 2000, 2002, 2003, 2004 +# Free Software Foundation, Inc. +# +# This file is part of GLD, the Gnu Linker. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# + if [ -z "$MACHINE" ]; then OUTPUT_ARCH=${ARCH} else OUTPUT_ARCH=${ARCH}:${MACHINE} fi -cat >e${EMULATION_NAME}.c <<EOF -/* This file is is generated by a shell script. DO NOT EDIT! */ - -/* Handle embedded relocs for MIPS. - Copyright 1994, 1995, 1997, 2000, 2002, 2003, 2004 - Free Software Foundation, Inc. - Written by Ian Lance Taylor <ian@cygnus.com> based on generic.em. - -This file is part of GLD, the Gnu Linker. - -This program is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#define TARGET_IS_${EMULATION_NAME} - -#include "bfd.h" -#include "sysdep.h" -#include "bfdlink.h" - -#include "ld.h" -#include "ldmain.h" -#include "ldmisc.h" - -#include "ldexp.h" -#include "ldlang.h" -#include "ldfile.h" -#include "ldemul.h" - -static void check_sections (bfd *, asection *, void *); - +cat >>e${EMULATION_NAME}.c <<EOF static void gld${EMULATION_NAME}_before_parse (void) { @@ -53,196 +32,6 @@ gld${EMULATION_NAME}_before_parse (void) ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); #endif /* not TARGET_ */ } - -/* This function is run after all the input files have been opened. - We create a .rel.sdata section for each input file with a non zero - .sdata section. The BFD backend will fill in these sections with - magic numbers which can be used to relocate the data section at run - time. This will only do the right thing if all the input files - have been compiled using -membedded-pic. */ - -static void -gld${EMULATION_NAME}_after_open (void) -{ - bfd *abfd; - - if (! command_line.embedded_relocs - || link_info.relocatable) - return; - - for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) - { - asection *datasec; - - /* As first-order business, make sure that each input BFD is ECOFF. It - better be, as we are directly calling an ECOFF backend function. */ - if (bfd_get_flavour (abfd) != bfd_target_ecoff_flavour) - einfo ("%F%B: all input objects must be ECOFF for --embedded-relocs\n"); - - datasec = bfd_get_section_by_name (abfd, ".sdata"); - - /* Note that we assume that the reloc_count field has already - been set up. We could call bfd_get_reloc_upper_bound, but - that returns the size of a memory buffer rather than a reloc - count. We do not want to call bfd_canonicalize_reloc, - because although it would always work it would force us to - read in the relocs into BFD canonical form, which would waste - a significant amount of time and memory. */ - if (datasec != NULL && datasec->reloc_count > 0) - { - asection *relsec; - - relsec = bfd_make_section (abfd, ".rel.sdata"); - if (relsec == NULL - || ! bfd_set_section_flags (abfd, relsec, - (SEC_ALLOC - | SEC_LOAD - | SEC_HAS_CONTENTS - | SEC_IN_MEMORY)) - || ! bfd_set_section_alignment (abfd, relsec, 2) - || ! bfd_set_section_size (abfd, relsec, - datasec->reloc_count * 4)) - einfo ("%F%B: can not create .rel.sdata section: %E\n"); - } - - /* Double check that all other data sections are empty, as is - required for embedded PIC code. */ - bfd_map_over_sections (abfd, check_sections, datasec); - } -} - -/* Check that of the data sections, only the .sdata section has - relocs. This is called via bfd_map_over_sections. */ - -static void -check_sections (bfd *abfd, asection *sec, void *sdatasec) -{ - if ((bfd_get_section_flags (abfd, sec) & SEC_CODE) == 0 - && sec != sdatasec - && sec->reloc_count != 0) - einfo ("%B%X: section %s has relocs; can not use --embedded-relocs\n", - abfd, bfd_get_section_name (abfd, sec)); -} - -/* This function is called after the section sizes and offsets have - been set. If we are generating embedded relocs, it calls a special - BFD backend routine to do the work. */ - -static void -gld${EMULATION_NAME}_after_allocation (void) -{ - bfd *abfd; - - if (! command_line.embedded_relocs - || link_info.relocatable) - return; - - for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) - { - asection *datasec, *relsec; - char *errmsg; - - datasec = bfd_get_section_by_name (abfd, ".sdata"); - - if (datasec == NULL || datasec->reloc_count == 0) - continue; - - relsec = bfd_get_section_by_name (abfd, ".rel.sdata"); - ASSERT (relsec != NULL); - - if (! bfd_mips_ecoff_create_embedded_relocs (abfd, &link_info, - datasec, relsec, - &errmsg)) - { - if (errmsg == NULL) - einfo ("%B%X: can not create runtime reloc information: %E\n", - abfd); - else - einfo ("%X%B: can not create runtime reloc information: %s\n", - abfd, errmsg); - } - } -} - -static char * -gld${EMULATION_NAME}_get_script (int *isfile) EOF -if test -n "$COMPILE_IN" -then -# Scripts compiled in. - -# sed commands to quote an ld script as a C string. -sc="-f stringify.sed" - -cat >>e${EMULATION_NAME}.c <<EOF -{ - *isfile = 0; - - if (link_info.relocatable && config.build_constructors) - return -EOF -sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c -echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c -echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c -echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c -echo ' ; else return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c -echo '; }' >> e${EMULATION_NAME}.c - -else -# Scripts read from the filesystem. - -cat >>e${EMULATION_NAME}.c <<EOF -{ - *isfile = 1; - - if (link_info.relocatable && config.build_constructors) - return "ldscripts/${EMULATION_NAME}.xu"; - else if (link_info.relocatable) - return "ldscripts/${EMULATION_NAME}.xr"; - else if (!config.text_read_only) - return "ldscripts/${EMULATION_NAME}.xbn"; - else if (!config.magic_demand_paged) - return "ldscripts/${EMULATION_NAME}.xn"; - else - return "ldscripts/${EMULATION_NAME}.x"; -} -EOF - -fi - -cat >>e${EMULATION_NAME}.c <<EOF - -struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = -{ - gld${EMULATION_NAME}_before_parse, - syslib_default, - hll_default, - after_parse_default, - gld${EMULATION_NAME}_after_open, - gld${EMULATION_NAME}_after_allocation, - set_output_arch_default, - ldemul_default_target, - before_allocation_default, - gld${EMULATION_NAME}_get_script, - "${EMULATION_NAME}", - "${OUTPUT_FORMAT}", - NULL, /* finish */ - NULL, /* create output section statements */ - NULL, /* open dynamic archive */ - NULL, /* place orphan */ - NULL, /* set symbols */ - NULL, /* parse args */ - NULL, /* add_options */ - NULL, /* handle_option */ - NULL, /* unrecognized file */ - NULL, /* list options */ - NULL, /* recognized file */ - NULL, /* find_potential_libraries */ - NULL /* new_vers_pattern */ -}; -EOF +LDEMUL_BEFORE_PARSE=gld${EMULATION_NAME}_before_parse |