| # 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 ${EMULATION_NAME} |
| Copyright (C) 1991, 93, 94, 95, 96, 1998 Free Software Foundation, Inc. |
| Written by Steve Chamberlain <sac@cygnus.com> |
| Linux support by Eric Youngdale <ericy@cais.cais.com> |
| |
| This file is part of GLD, the Gnu Linker. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #define TARGET_IS_${EMULATION_NAME} |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "bfdlink.h" |
| |
| #include "ld.h" |
| #include "ldmain.h" |
| #include "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 *, search_dirs_type *, lang_input_statement_type *)); |
| static void gld${EMULATION_NAME}_find_address_statement |
| PARAMS ((lang_statement_union_type *)); |
| static void gld${EMULATION_NAME}_create_output_section_statements |
| PARAMS ((void)); |
| 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; |
| config.has_shared = true; |
| } |
| |
| /* Try to open a dynamic archive. This is where we know that Linux |
| dynamic libraries have an extension of .sa. */ |
| |
| static boolean |
| gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry) |
| const char *arch; |
| search_dirs_type *search; |
| lang_input_statement_type *entry; |
| { |
| char *string; |
| |
| if (! entry->is_archive) |
| return false; |
| |
| string = (char *) xmalloc (strlen (search->name) |
| + strlen (entry->filename) |
| + strlen (arch) |
| + sizeof "/lib.sa"); |
| |
| sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch); |
| |
| if (! ldfile_try_open_bfd (string, entry)) |
| { |
| free (string); |
| return false; |
| } |
| |
| entry->filename = string; |
| |
| return true; |
| } |
| |
| /* This is called by the create_output_section_statements routine via |
| lang_for_each_statement. It locates any address assignment to |
| .text, and modifies it to include the size of the headers. This |
| causes -Ttext to mean the starting address of the header, rather |
| than the starting address of .text, which is compatible with other |
| Linux tools. */ |
| |
| static void |
| gld${EMULATION_NAME}_find_address_statement (s) |
| lang_statement_union_type *s; |
| { |
| if (s->header.type == lang_address_statement_enum |
| && strcmp (s->address_statement.section_name, ".text") == 0) |
| { |
| ASSERT (s->address_statement.address->type.node_class == etree_value); |
| s->address_statement.address->value.value += 0x20; |
| } |
| } |
| |
| /* This is called before opening the input BFD's. */ |
| |
| static void |
| gld${EMULATION_NAME}_create_output_section_statements () |
| { |
| lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement); |
| } |
| |
| /* This is called after the sections have been attached to output |
| sections, but before any sizes or addresses have been set. */ |
| |
| static void |
| gld${EMULATION_NAME}_before_allocation () |
| { |
| if (link_info.relocateable) |
| return; |
| |
| /* Let the backend work out the sizes of any sections required by |
| dynamic linking. */ |
| if (! bfd_${EMULATION_NAME}_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_open_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, |
| gld${EMULATION_NAME}_create_output_section_statements, |
| gld${EMULATION_NAME}_open_dynamic_archive |
| }; |
| EOF |