old-cross-binutils/ld/emultempl/hppaelf.em
1994-02-08 00:28:05 +00:00

298 lines
8.1 KiB
Text

# This shell script emits a C file. -*- C -*-
# It does some substitutions.
cat >em_${EMULATION_NAME}.c <<EOF
/* An emulation for HP PA-RISC OSF/1 linkers.
Copyright (C) 1991, 1993 Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
This file is part of GLD, the Gnu Linker.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
#include "ld.h"
#include "config.h"
#include "ldemul.h"
#include "ldfile.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldmisc.h"
#include "ldmain.h"
#include "ldctor.h"
static void hppaosf_before_parse()
{
link_info.lprefix = "L$";
link_info.lprefix_len = 2;
ldfile_output_architecture = bfd_arch_hppa;
}
static lang_input_statement_type *stub_file = 0;
static lang_input_section_type *stub_input_section = NULL;
static void
hppaosf_search_for_padding_statements(s,prev)
lang_statement_union_type *s;
lang_statement_union_type **prev;
{
lang_statement_union_type *sprev = NULL;
for (; s != (lang_statement_union_type *) NULL; s = s->next)
{
switch (s->header.type)
{
case lang_constructors_statement_enum:
hppaosf_search_for_padding_statements (constructor_list.head,&constructor_list.head);
break;
case lang_output_section_statement_enum:
hppaosf_search_for_padding_statements
(s->output_section_statement.children.head,&s->output_section_statement.children.head);
break;
case lang_wild_statement_enum:
hppaosf_search_for_padding_statements
(s->wild_statement.children.head,&s->wild_statement.children.head);
break;
case lang_data_statement_enum:
case lang_object_symbols_statement_enum:
case lang_output_statement_enum:
case lang_target_statement_enum:
case lang_input_section_enum:
case lang_input_statement_enum:
case lang_assignment_statement_enum:
case lang_address_statement_enum:
break;
case lang_padding_statement_enum:
if ( sprev )
{
sprev->header.next = s->header.next;
}
else
{
**prev = *s;
}
break;
default:
FAIL ();
break;
}
sprev = s;
}
}
static void
hppaosf_finish()
{
extern asymbol *hppa_look_for_stubs_in_section();
if (link_info.relocateable == false)
{
/* check for needed stubs */
extern lang_statement_list_type file_chain;
lang_input_statement_type *statement;
for (statement = (lang_input_statement_type *)file_chain.head;
statement != (lang_input_statement_type *)NULL;
statement = (lang_input_statement_type *)statement->next)
{
asection *section;
bfd *abfd = statement->the_bfd;
for (section = abfd->sections;
section != (asection *)NULL;
section = section ->next)
{
int new_sym_cnt = 0;
int i,j;
asymbol *syms;
syms = hppa_look_for_stubs_in_section (stub_file->the_bfd,
abfd,
output_bfd,
section,
statement->asymbols,
&new_sym_cnt,
&link_info);
if ( (new_sym_cnt > 0) && syms )
{
struct symbol_cache_entry **old_asymbols;
old_asymbols = stub_file->asymbols;
stub_file->asymbols = xmalloc((stub_file->symbol_count + new_sym_cnt) * sizeof(asymbol *));
for ( j = 0; j < stub_file->symbol_count; j++ )
stub_file->asymbols[j] = old_asymbols[j];
for ( j = 0, i = stub_file->symbol_count; j < new_sym_cnt; j++, i++ )
stub_file->asymbols[i] = &syms[j];
stub_file->symbol_count += new_sym_cnt;
}
}
}
/* Add a statement to get the linker stubs included in the output */
lang_add_wild(".hppa_linker_stubs",NULL);
/* If we've added stubs,remove the padding_statements because */
/* they are no longer valid */
hppaosf_search_for_padding_statements(stat_ptr->head,&(stat_ptr->head));
}
}
static void
hppaosf_create_output_section_statements()
{
asection *stub_sec;
asection *output_text_sec = bfd_make_section_old_way(output_bfd,".text");
lang_input_section_type *new_input_sec;
stub_file = lang_add_input_file ("linker stubs",
lang_input_file_is_fake_enum,
(char *) NULL);
stub_file->the_bfd = bfd_create ("linker stubs", output_bfd);
stub_file->symbol_count = 0;
stub_file->the_bfd->sections = 0;
stub_sec = bfd_make_section_old_way(stub_file->the_bfd,".hppa_linker_stubs");
stub_sec->output_section = output_text_sec;
bfd_set_section_flags(stub_file->the_bfd, stub_sec, SEC_HAS_CONTENTS | SEC_ALLOC | SEC_CODE | SEC_RELOC );
/* The user data of a bfd points to the input statement attached */
stub_file->the_bfd->usrdata = (void *)stub_file;
stub_file->common_section =
bfd_make_section(stub_file->the_bfd,"COMMON");
new_input_sec = (lang_input_section_type *)stat_alloc(sizeof(lang_input_section_type));
if ( new_input_sec )
{
lang_output_section_statement_type *text_output_sec;
lang_statement_union_type *stmt;
lang_wild_statement_type *stub_statement;
new_input_sec->section = stub_sec;
new_input_sec->ifile = stub_file;
new_input_sec->header.type = lang_input_section_enum;
new_input_sec->header.next = NULL;
stub_input_section = new_input_sec;
/* Find the output_section_statement for .text, */
/* then find the wild_statement for .hppa_linker_stubs */
text_output_sec = lang_output_section_find(".text");
stmt = text_output_sec->children.head;
while (stmt && stmt->header.type != lang_wild_statement_enum)
{
stmt = stmt->header.next;
}
if ( stmt )
{
lang_wild_statement_type *wstmt = (lang_wild_statement_type *)stmt;
lang_list_init(&wstmt->children);
lang_statement_append(&wstmt->children,
(lang_statement_union_type *)new_input_sec,
&new_input_sec->header.next);
}
}
}
static void
hppaosf_set_output_arch()
{
/* Set the output architecture and machine if possible */
unsigned long machine = 0;
bfd_set_arch_mach(output_bfd, ldfile_output_architecture, machine);
}
static char *
hppaosf_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 >>em_${EMULATION_NAME}.c <<EOF
{
*isfile = 0;
if (link_info.relocateable == true && config.build_constructors == true)
return `sed "$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/${EMULATION_NAME}.x`;
}
EOF
else
# Scripts read from the filesystem.
cat >>em_${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/${EMULATION_NAME}.x";
}
EOF
fi
cat >>em_${EMULATION_NAME}.c <<EOF
struct ld_emulation_xfer_struct ld_hppaosf_emulation =
{
hppaosf_before_parse,
syslib_default,
hll_default,
after_parse_default,
after_allocation_default,
hppaosf_set_output_arch,
ldemul_default_target,
before_allocation_default,
hppaosf_get_script,
"hppaosf",
"elf32-hppa",
hppaosf_finish,
hppaosf_create_output_section_statements
};
EOF