Retro68/binutils/ld/emultempl/lnk960.em

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# This shell script emits a C file. -*- C -*-
# It does some substitutions.
fragment <<EOF
/* intel coff loader emulation specific stuff
Copyright 1991, 1992, 1994, 1995, 1996, 1999, 2000, 2001, 2002, 2003,
2005, 2007, 2008 Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
This file is part of the GNU Binutils.
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 3 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., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include "libiberty.h"
#include "bfd.h"
#include "bfdlink.h"
/*#include "archures.h"*/
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldemul.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 (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 bfd_boolean had_hll = FALSE;
static bfd_boolean had_hll_name = FALSE;
static void
lnk960_hll (char *name)
{
had_hll = TRUE;
if (name != (char *) NULL)
{
had_hll_name = TRUE;
append (&hll_list_tail, name);
}
}
static void
lnk960_syslib (char *name)
{
append (&syslib_list_tail, name);
}
static void
lnk960_before_parse (void)
{
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", (const char *) NULL), FALSE);
ldfile_output_architecture = bfd_arch_i960;
ldfile_output_machine = bfd_mach_i960_core;
}
static void
add_on (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 (void)
{
/* 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);
}
/* Create a symbol with the given name with the value of the
address of first byte of the section named.
If the symbol already exists, then do nothing. */
static void
symbol_at_beginning_of (const char *secname, const char *name)
{
struct bfd_link_hash_entry *h;
h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE);
if (h == NULL)
einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
if (h->type == bfd_link_hash_new
|| h->type == bfd_link_hash_undefined)
{
asection *sec;
h->type = bfd_link_hash_defined;
sec = bfd_get_section_by_name (link_info.output_bfd, secname);
if (sec == NULL)
sec = bfd_abs_section_ptr;
h->u.def.value = 0;
h->u.def.section = sec;
}
}
/* Create a symbol with the given name with the value of the
address of the first byte after the end of the section named.
If the symbol already exists, then do nothing. */
static void
symbol_at_end_of (const char *secname, const char *name)
{
struct bfd_link_hash_entry *h;
h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE);
if (h == NULL)
einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
if (h->type == bfd_link_hash_new
|| h->type == bfd_link_hash_undefined)
{
asection *sec;
h->type = bfd_link_hash_defined;
sec = bfd_get_section_by_name (link_info.output_bfd, secname);
if (sec == NULL)
sec = bfd_abs_section_ptr;
h->u.def.value = sec->size;
h->u.def.section = sec;
}
}
static void
lnk960_after_allocation (void)
{
if (!link_info.relocatable)
{
symbol_at_end_of (".text", "_etext");
symbol_at_end_of (".data", "_edata");
symbol_at_beginning_of (".bss", "_bss_start");
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 (void)
{
/* 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 (link_info.output_bfd, ldfile_output_architecture,
ldfile_output_machine);
}
static char *
lnk960_choose_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
{
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
}
static char *
lnk960_get_script (int *isfile)
EOF
if test -n "$COMPILE_IN"
then
# Scripts compiled in.
# sed commands to quote an ld script as a C string.
sc="-f stringify.sed"
fragment <<EOF
{
*isfile = 0;
if (link_info.relocatable && config.build_constructors)
return
EOF
sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
echo ' ; else return' >> e${EMULATION_NAME}.c
sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
echo '; }' >> e${EMULATION_NAME}.c
else
# Scripts read from the filesystem.
fragment <<EOF
{
*isfile = 1;
if (link_info.relocatable && config.build_constructors)
return "ldscripts/${EMULATION_NAME}.xu";
else if (link_info.relocatable)
return "ldscripts/${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
fragment <<EOF
struct ld_emulation_xfer_struct ld_lnk960_emulation =
{
lnk960_before_parse,
lnk960_syslib,
lnk960_hll,
lnk960_after_parse,
after_open_default,
lnk960_after_allocation,
lnk960_set_output_arch,
lnk960_choose_target,
before_allocation_default,
lnk960_get_script,
"lnk960",
"",
finish_default,
NULL, /* create output section statements */
NULL, /* open dynamic archive */
NULL, /* place orphan */
NULL, /* set symbols */
NULL, /* parse args */
NULL, /* add_options */
NULL, /* handle_option */
NULL, /* unrecognized file */
NULL, /* list options */
NULL, /* recognized file */
NULL, /* find_potential_libraries */
NULL /* new_vers_pattern */
};
EOF