NetBSD/gnu/dist/ld/emultempl/lnk960.em

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1997-09-24 19:39:15 +04:00
# This shell script emits a C file. -*- C -*-
# It does some substitutions.
cat >e${EMULATION_NAME}.c <<EOF
/* intel coff loader emulation specific stuff
Copyright (C) 1991, 1993 Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
This file is part of GLD, the Gnu Linker.
GLD 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, or (at your option)
any later version.
GLD 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 GLD; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "libiberty.h"
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
/*#include "archures.h"*/
#include "ld.h"
#include "ldemul.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldmain.h"
typedef struct lib_list {
char *name;
struct lib_list *next;
} lib_list_type;
static lib_list_type *hll_list;
static lib_list_type **hll_list_tail = &hll_list;
static lib_list_type *syslib_list;
static lib_list_type **syslib_list_tail = &syslib_list;
static void
append(list, name)
lib_list_type ***list;
char *name;
{
lib_list_type *element =
(lib_list_type *)(xmalloc(sizeof(lib_list_type)));
element->name = name;
element->next = (lib_list_type *)NULL;
**list = element;
*list = &element->next;
}
static boolean had_hll = false;
static boolean had_hll_name = false;
static void
lnk960_hll(name)
char *name;
{
had_hll = true;
if (name != (char *)NULL) {
had_hll_name = true;
append(&hll_list_tail, name);
}
}
static void
lnk960_syslib(name)
char *name;
{
append(&syslib_list_tail,name);
}
#ifdef GNU960
static void
lnk960_before_parse()
{
static char *env_variables[] = { "G960LIB", "G960BASE", 0 };
char **p;
char *env ;
for ( p = env_variables; *p; p++ ){
env = (char *) getenv(*p);
if (env) {
ldfile_add_library_path(concat(env,"/lib/libcoff",""), false);
}
}
env= (char *) getenv("I960BASE");
if ( env ) {
ldfile_add_library_path(concat(env,"/lib",""), false);
}
ldfile_output_architecture = bfd_arch_i960;
ldfile_output_machine = bfd_mach_i960_core;
}
#else /* not GNU960 */
static void
lnk960_before_parse()
{
char *name = getenv("I960BASE");
if (name == (char *)NULL) {
name = getenv("G960BASE");
if (name == (char *)NULL) {
einfo("%P%F I960BASE and G960BASE not set\n");
}
}
ldfile_add_library_path(concat(name,"/lib",""), false);
ldfile_output_architecture = bfd_arch_i960;
ldfile_output_machine = bfd_mach_i960_core;
}
#endif /* GNU960 */
static void
add_on(list, search)
lib_list_type *list;
lang_input_file_enum_type search;
{
while (list) {
lang_add_input_file(list->name,
search,
(char *)NULL);
list = list->next;
}
}
static void
lnk960_after_parse()
{
/* If there has been no arch, default to -KB */
if (ldfile_output_machine_name[0] ==0) {
ldfile_add_arch("KB");
}
/* if there has been no hll list then add our own */
if(had_hll && !had_hll_name) {
append(&hll_list_tail,"cg");
if (ldfile_output_machine == bfd_mach_i960_ka_sa ||
ldfile_output_machine == bfd_mach_i960_ca) {
{
append(&hll_list_tail,"fpg");
}
}
}
add_on(hll_list, lang_input_file_is_l_enum);
add_on(syslib_list, lang_input_file_is_search_file_enum);
}
static void
lnk960_before_allocation()
{
}
static void
lnk960_after_allocation()
{
if (link_info.relocateable == false) {
lang_abs_symbol_at_end_of(".text","_etext");
lang_abs_symbol_at_end_of(".data","_edata");
lang_abs_symbol_at_beginning_of(".bss","_bss_start");
lang_abs_symbol_at_end_of(".bss","_end");
}
}
static struct
{
unsigned long number;
char *name;
}
machine_table[] =
{
{ bfd_mach_i960_core ,"CORE" },
{ bfd_mach_i960_kb_sb ,"KB" },
{ bfd_mach_i960_kb_sb ,"SB" },
{ bfd_mach_i960_mc ,"MC" },
{ bfd_mach_i960_xa ,"XA" },
{ bfd_mach_i960_ca ,"CA" },
{ bfd_mach_i960_ka_sa ,"KA" },
{ bfd_mach_i960_ka_sa ,"SA" },
{ bfd_mach_i960_jx ,"JX" },
{ bfd_mach_i960_hx ,"HX" },
{ bfd_mach_i960_core ,"core" },
{ bfd_mach_i960_kb_sb ,"kb" },
{ bfd_mach_i960_kb_sb ,"sb" },
{ bfd_mach_i960_mc ,"mc" },
{ bfd_mach_i960_xa ,"xa" },
{ bfd_mach_i960_ca ,"ca" },
{ bfd_mach_i960_ka_sa ,"ka" },
{ bfd_mach_i960_ka_sa ,"sa" },
{ bfd_mach_i960_jx ,"jx" },
{ bfd_mach_i960_hx ,"hx" },
{ 0, (char *) NULL }
};
static void
lnk960_set_output_arch()
{
/* Set the output architecture and machine if possible */
unsigned int i;
ldfile_output_machine = bfd_mach_i960_core;
for (i= 0; machine_table[i].name != (char*)NULL; i++) {
if (strcmp(ldfile_output_machine_name,machine_table[i].name)==0) {
ldfile_output_machine = machine_table[i].number;
break;
}
}
bfd_set_arch_mach(output_bfd, ldfile_output_architecture, ldfile_output_machine);
}
static char *
lnk960_choose_target()
{
#ifdef GNU960
return bfd_make_targ_name(BFD_COFF_FORMAT, 0);
#else
char *from_outside = getenv(TARGET_ENVIRON);
if (from_outside != (char *)NULL)
return from_outside;
#ifdef LNK960_LITTLE
return "coff-Intel-little";
#else
return "coff-Intel-big";
#endif
#endif
}
static char *
lnk960_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_lnk960_emulation =
{
lnk960_before_parse,
lnk960_syslib,
lnk960_hll,
lnk960_after_parse,
NULL, /* after_open */
lnk960_after_allocation,
lnk960_set_output_arch,
lnk960_choose_target,
lnk960_before_allocation,
lnk960_get_script,
"lnk960",
""
};
EOF