336 lines
7.8 KiB
Text
336 lines
7.8 KiB
Text
# This shell script emits a C file. -*- C -*-
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# It does some substitutions.
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cat >e${EMULATION_NAME}.c <<EOF
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/* intel coff loader emulation specific stuff
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Copyright 1991, 1992, 1994, 1995, 1996, 1999, 2000
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Free Software Foundation, Inc.
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Written by Steve Chamberlain steve@cygnus.com
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "libiberty.h"
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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/*#include "archures.h"*/
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#include "ld.h"
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#include "ldmain.h"
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#include "ldmisc.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldfile.h"
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#include "ldemul.h"
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typedef struct lib_list {
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char *name;
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struct lib_list *next;
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} lib_list_type;
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static lib_list_type *hll_list;
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static lib_list_type **hll_list_tail = &hll_list;
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static lib_list_type *syslib_list;
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static lib_list_type **syslib_list_tail = &syslib_list;
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static void
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append(list, name)
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lib_list_type ***list;
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char *name;
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{
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lib_list_type *element =
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(lib_list_type *)(xmalloc(sizeof(lib_list_type)));
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element->name = name;
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element->next = (lib_list_type *)NULL;
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**list = element;
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*list = &element->next;
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}
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static boolean had_hll = false;
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static boolean had_hll_name = false;
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static void
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lnk960_hll(name)
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char *name;
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{
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had_hll = true;
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if (name != (char *)NULL) {
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had_hll_name = true;
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append(&hll_list_tail, name);
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}
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}
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static void
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lnk960_syslib(name)
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char *name;
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{
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append(&syslib_list_tail,name);
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}
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#ifdef GNU960
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static void
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lnk960_before_parse()
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{
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static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
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char **p;
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char *env ;
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for ( p = env_variables; *p; p++ ){
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env = (char *) getenv(*p);
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if (env) {
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ldfile_add_library_path(concat(env,"/lib/libcoff",""), false);
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}
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}
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env= (char *) getenv("I960BASE");
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if ( env ) {
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ldfile_add_library_path(concat(env,"/lib",""), false);
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}
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ldfile_output_architecture = bfd_arch_i960;
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ldfile_output_machine = bfd_mach_i960_core;
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}
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#else /* not GNU960 */
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static void
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lnk960_before_parse()
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{
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char *name = getenv("I960BASE");
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if (name == (char *)NULL) {
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name = getenv("G960BASE");
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if (name == (char *)NULL) {
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einfo("%P%F I960BASE and G960BASE not set\n");
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}
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}
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ldfile_add_library_path(concat(name,"/lib",""), false);
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ldfile_output_architecture = bfd_arch_i960;
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ldfile_output_machine = bfd_mach_i960_core;
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}
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#endif /* GNU960 */
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static void
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add_on(list, search)
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lib_list_type *list;
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lang_input_file_enum_type search;
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{
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while (list) {
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lang_add_input_file(list->name,
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search,
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(char *)NULL);
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list = list->next;
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}
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}
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static void
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lnk960_after_parse()
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{
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/* If there has been no arch, default to -KB */
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if (ldfile_output_machine_name[0] ==0) {
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ldfile_add_arch("KB");
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}
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/* if there has been no hll list then add our own */
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if(had_hll && !had_hll_name) {
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append(&hll_list_tail,"cg");
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if (ldfile_output_machine == bfd_mach_i960_ka_sa ||
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ldfile_output_machine == bfd_mach_i960_ca) {
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{
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append(&hll_list_tail,"fpg");
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}
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}
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}
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add_on(hll_list, lang_input_file_is_l_enum);
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add_on(syslib_list, lang_input_file_is_search_file_enum);
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}
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static void
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lnk960_before_allocation()
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{
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}
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static void
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lnk960_after_allocation()
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{
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if (link_info.relocateable == false) {
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lang_abs_symbol_at_end_of(".text","_etext");
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lang_abs_symbol_at_end_of(".data","_edata");
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lang_abs_symbol_at_beginning_of(".bss","_bss_start");
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lang_abs_symbol_at_end_of(".bss","_end");
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}
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}
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static struct
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{
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unsigned long number;
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char *name;
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}
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machine_table[] =
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{
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{ bfd_mach_i960_core ,"CORE" },
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{ bfd_mach_i960_kb_sb ,"KB" },
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{ bfd_mach_i960_kb_sb ,"SB" },
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{ bfd_mach_i960_mc ,"MC" },
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{ bfd_mach_i960_xa ,"XA" },
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{ bfd_mach_i960_ca ,"CA" },
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{ bfd_mach_i960_ka_sa ,"KA" },
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{ bfd_mach_i960_ka_sa ,"SA" },
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{ bfd_mach_i960_jx ,"JX" },
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{ bfd_mach_i960_hx ,"HX" },
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{ bfd_mach_i960_core ,"core" },
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{ bfd_mach_i960_kb_sb ,"kb" },
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{ bfd_mach_i960_kb_sb ,"sb" },
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{ bfd_mach_i960_mc ,"mc" },
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{ bfd_mach_i960_xa ,"xa" },
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{ bfd_mach_i960_ca ,"ca" },
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{ bfd_mach_i960_ka_sa ,"ka" },
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{ bfd_mach_i960_ka_sa ,"sa" },
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{ bfd_mach_i960_jx ,"jx" },
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{ bfd_mach_i960_hx ,"hx" },
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{ 0, (char *) NULL }
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};
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static void
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lnk960_set_output_arch()
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{
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/* Set the output architecture and machine if possible */
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unsigned int i;
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ldfile_output_machine = bfd_mach_i960_core;
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for (i= 0; machine_table[i].name != (char*)NULL; i++) {
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if (strcmp(ldfile_output_machine_name,machine_table[i].name)==0) {
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ldfile_output_machine = machine_table[i].number;
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break;
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}
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}
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bfd_set_arch_mach(output_bfd, ldfile_output_architecture, ldfile_output_machine);
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}
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static char *
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lnk960_choose_target()
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{
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#ifdef GNU960
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return bfd_make_targ_name(BFD_COFF_FORMAT, 0);
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#else
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char *from_outside = getenv(TARGET_ENVIRON);
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if (from_outside != (char *)NULL)
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return from_outside;
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#ifdef LNK960_LITTLE
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return "coff-Intel-little";
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#else
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return "coff-Intel-big";
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#endif
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#endif
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}
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static char *
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lnk960_get_script(isfile)
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int *isfile;
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EOF
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if test -n "$COMPILE_IN"
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then
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# Scripts compiled in.
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# sed commands to quote an ld script as a C string.
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sc="-f stringify.sed"
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cat >>e${EMULATION_NAME}.c <<EOF
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{
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*isfile = 0;
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if (link_info.relocateable == true && config.build_constructors == true)
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return
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EOF
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sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
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echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
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echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
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echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
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echo ' ; else return' >> e${EMULATION_NAME}.c
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sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
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echo '; }' >> e${EMULATION_NAME}.c
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else
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# Scripts read from the filesystem.
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cat >>e${EMULATION_NAME}.c <<EOF
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{
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*isfile = 1;
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if (link_info.relocateable == true && config.build_constructors == true)
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return "ldscripts/${EMULATION_NAME}.xu";
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else if (link_info.relocateable == true)
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return "ldscripts/${EMULATION_NAME}.xr";
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else if (!config.text_read_only)
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return "ldscripts/${EMULATION_NAME}.xbn";
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else if (!config.magic_demand_paged)
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return "ldscripts/${EMULATION_NAME}.xn";
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else
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return "ldscripts/${EMULATION_NAME}.x";
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}
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EOF
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fi
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cat >>e${EMULATION_NAME}.c <<EOF
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struct ld_emulation_xfer_struct ld_lnk960_emulation =
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{
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lnk960_before_parse,
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lnk960_syslib,
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lnk960_hll,
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lnk960_after_parse,
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NULL, /* after_open */
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lnk960_after_allocation,
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lnk960_set_output_arch,
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lnk960_choose_target,
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lnk960_before_allocation,
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lnk960_get_script,
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"lnk960",
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"",
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NULL, /* finish */
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NULL, /* create output section statements */
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NULL, /* open dynamic archive */
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NULL, /* place orphan */
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NULL, /* set symbols */
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NULL, /* parse args */
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NULL, /* unrecognized file */
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NULL, /* list options */
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NULL, /* recognized file */
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NULL /* find_potential_libraries */
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};
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EOF
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