binutils-gdb/ld/ldlnk960.c

284 lines
5.8 KiB
C
Executable File

/* intel coff loader emulation specific stuff
Copyright (C) 1991 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
/*
$Id$
*/
#include "bfd.h"
#include "sysdep.h"
/*#include "archures.h"*/
#include "ld.h"
#include "config.h"
#include "ldemul.h"
#include "ldmisc.h"
#include "ldlang.h"
#include "ldfile.h"
extern boolean lang_float_flag;
extern bfd *output_bfd;
extern enum bfd_architecture ldfile_output_architecture;
extern unsigned long ldfile_output_machine;
extern char *ldfile_output_machine_name;
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 *)(ldmalloc(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",""));
}
}
env= (char *) getenv("I960BASE");
if ( env ) {
ldfile_add_library_path(concat(env,"/lib",""));
}
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) {
info("%P%F I960BASE and G960BASE not set\n");
}
}
ldfile_add_library_path(concat(name,"/lib",""));
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()
{
extern ld_config_type config;
if (config.relocateable_output == 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_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",
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;
return LNK960_TARGET;
#endif
}
/* The default script if none is offered */
static char *lnk960_script =
#include "ldlnk960.x"
;
static char *lnk960_script_relocateable =
#include "ldlnk960.xr"
;
static char *lnk960_get_script()
{
extern ld_config_type config;
if (config.relocateable_output) {
return lnk960_script_relocateable;
}
return lnk960_script;
}
struct ld_emulation_xfer_struct ld_lnk960_emulation =
{
lnk960_before_parse,
lnk960_syslib,
lnk960_hll,
lnk960_after_parse,
lnk960_after_allocation,
lnk960_set_output_arch,
lnk960_choose_target,
lnk960_before_allocation,
lnk960_get_script,
};