diff options
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/ChangeLog | 7 | ||||
| -rw-r--r-- | ld/config/i386-linux.mt | 2 | ||||
| -rw-r--r-- | ld/emultempl/.Sanitize | 1 | ||||
| -rw-r--r-- | ld/emultempl/linux.em | 155 |
4 files changed, 164 insertions, 1 deletions
diff --git a/ld/ChangeLog b/ld/ChangeLog index 9d6feb0..e86a31d 100644 --- a/ld/ChangeLog +++ b/ld/ChangeLog @@ -1,3 +1,10 @@ +Thu Jun 16 14:25:22 1994 Eric Youngdale (ericy@cais.cais.com) + + * emultempl/linux.em: New file providing support for linking + against Linux shared libraries. + * config/i386-linux.mt (ei386linux.c): Depend upon linux.em. + * emulparams/i386linux.sh (TEMPLATE_NAME): Define as linux. + Thu Jun 16 12:22:01 1994 Ian Lance Taylor (ian@tweedledumb.cygnus.com) * ldexp.c (exp_print_tree): Don't crash if etree_rel section has diff --git a/ld/config/i386-linux.mt b/ld/config/i386-linux.mt index bf42c11..0b705d8 100644 --- a/ld/config/i386-linux.mt +++ b/ld/config/i386-linux.mt @@ -1,5 +1,5 @@ EMUL=i386linux OTHER_EMULATIONS= ei386linux.o ei386linux.c: $(srcdir)/emulparams/i386linux.sh \ - $(srcdir)/emultempl/generic.em $(srcdir)/scripttempl/aout.sc ${GEN_DEPENDS} + $(srcdir)/emultempl/linux.em $(srcdir)/scripttempl/aout.sc ${GEN_DEPENDS} ${GENSCRIPTS} i386linux diff --git a/ld/emultempl/.Sanitize b/ld/emultempl/.Sanitize index b4bab8b..7261d4a 100644 --- a/ld/emultempl/.Sanitize +++ b/ld/emultempl/.Sanitize @@ -31,6 +31,7 @@ generic.em gld960.em gld960c.em hppaelf.em +linux.em lnk960.em m88kbcs.em sunos.em diff --git a/ld/emultempl/linux.em b/ld/emultempl/linux.em new file mode 100644 index 0000000..013a8eb --- /dev/null +++ b/ld/emultempl/linux.em @@ -0,0 +1,155 @@ +# This shell script emits a C file. -*- C -*- +# It does some substitutions. +cat >e${EMULATION_NAME}.c <<EOF +/* This file is is generated by a shell script. DO NOT EDIT! */ + +/* Linux a.out emulation code for ${EMULATION_NAME} + Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc. + Written by Steve Chamberlain <sac@cygnus.com> + Linux support by Eric Youngdale <ericy@cais.cais.com> + +This file is part of GLD, the Gnu Linker. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#define TARGET_IS_${EMULATION_NAME} + +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" + +#include "ld.h" +#include "config.h" +#include "ldmain.h" +#include "ldemul.h" +#include "ldfile.h" +#include "ldmisc.h" +#include "ldexp.h" +#include "ldlang.h" + +static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); +static boolean gld${EMULATION_NAME}_open_dynamic_archive + PARAMS ((const char *, lang_input_statement_type *)); +static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); +static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); + +static void +gld${EMULATION_NAME}_before_parse() +{ + ldfile_output_architecture = bfd_arch_${ARCH}; + config.dynamic_link = true; +} + +/* Try to open a dynamic archive. This is where we know that Linux + dynamic libraries have an extension of .sa. */ + +static boolean +gld${EMULATION_NAME}_open_dynamic_archive (arch, entry) + const char *arch; + lang_input_statement_type *entry; +{ + return ldfile_open_file_search (arch, entry, "lib", ".sa"); +} + +/* This is called after the sections have been attached to output + sections, but before any sizes or addresses have been set. */ + +static void +gld${EMULATION_NAME}_before_allocation () +{ + if (link_info.relocateable) + return; + + /* Let the backend work out the sizes of any sections required by + dynamic linking. */ + if (! bfd_linux_size_dynamic_sections (output_bfd, &link_info)) + einfo ("%P%F: failed to set dynamic section sizes: %E\n"); +} + +static char * +gld${EMULATION_NAME}_get_script(isfile) + int *isfile; +EOF + +if test -n "$COMPILE_IN" +then +# Scripts compiled in. + +# sed commands to quote an ld script as a C string. +sc='s/["\\]/\\&/g +s/$/\\n\\/ +1s/^/"/ +$s/$/n"/ +' + +cat >>e${EMULATION_NAME}.c <<EOF +{ + *isfile = 0; + + if (link_info.relocateable == true && config.build_constructors == true) + return `sed "$sc" ldscripts/${EMULATION_NAME}.xu`; + else if (link_info.relocateable == true) + return `sed "$sc" ldscripts/${EMULATION_NAME}.xr`; + else if (!config.text_read_only) + return `sed "$sc" ldscripts/${EMULATION_NAME}.xbn`; + else if (!config.magic_demand_paged) + return `sed "$sc" ldscripts/${EMULATION_NAME}.xn`; + else + return `sed "$sc" ldscripts/${EMULATION_NAME}.x`; +} +EOF + +else +# Scripts read from the filesystem. + +cat >>e${EMULATION_NAME}.c <<EOF +{ + *isfile = 1; + + if (link_info.relocateable == true && config.build_constructors == true) + return "ldscripts/${EMULATION_NAME}.xu"; + else if (link_info.relocateable == true) + 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${EMULATION_NAME}_before_parse, + syslib_default, + hll_default, + after_parse_default, + after_allocation_default, + set_output_arch_default, + ldemul_default_target, + gld${EMULATION_NAME}_before_allocation, + gld${EMULATION_NAME}_get_script, + "${EMULATION_NAME}", + "${OUTPUT_FORMAT}", + NULL, + NULL, + gld${EMULATION_NAME}_open_dynamic_archive +}; +EOF |