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/*
Crown Copyright (c) 1997
This TenDRA(r) Computer Program is subject to Copyright
owned by the United Kingdom Secretary of State for Defence
acting through the Defence Evaluation and Research Agency
(DERA). It is made available to Recipients with a
royalty-free licence for its use, reproduction, transfer
to other parties and amendment for any purpose not excluding
product development provided that any such use et cetera
shall be deemed to be acceptance of the following conditions:-
(1) Its Recipients shall ensure that this Notice is
reproduced upon any copies or amended versions of it;
(2) Any amended version of it shall be clearly marked to
show both the nature of and the organisation responsible
for the relevant amendment or amendments;
(3) Its onward transfer from a recipient to another
party shall be deemed to be that party's acceptance of
these conditions;
(4) DERA gives no warranty or assurance as to its
quality or suitability for any purpose and DERA accepts
no liability whatsoever in relation to any use to which
it may be put.
*/
/**** linker.c --- Front end to linking mode of TDF linker.
*
** Author: Steve Folkes <smf@hermes.mod.uk>
*
**** Commentary:
*
* This file provides the front end to the linking mode of the TDF linker.
*
**** Change Log:
* $Log: linker.c,v $
* Revision 1.1.1.1 1998/01/17 15:57:16 release
* First version to be checked into rolling release.
*
* Revision 1.3 1995/09/22 08:37:11 smf
* Fixed problems with incomplete structures (to shut "tcc" up).
*
* Revision 1.2 1994/12/12 11:44:06 smf
* Performing changes for 'CR94_178.sid+tld-update' - bringing in line with
* OSSG C Coding Standards.
*
* Revision 1.1.1.1 1994/07/25 16:03:26 smf
* Initial import of TDF linker 3.5 non shared files.
*
**/
/****************************************************************************/
#include "linker.h"
#include "capsule.h"
#include "debug.h"
#include "error.h"
#include "file-name.h"
#include "gen-errors.h"
#include "library.h"
#include "shape-table.h"
#include "tdf.h"
#include "unit-table.h"
#include "solve-cycles.h"
/*--------------------------------------------------------------------------*/
typedef struct RenameClosureT {
ShapeTableP shapes;
ShapeTableP lib_shapes;
} RenameClosureT, *RenameClosureP;
/*--------------------------------------------------------------------------*/
static void
linker_rename_1 PROTO_N ((shape, names, gclosure))
PROTO_T (NStringP shape X
NameKeyPairListP names X
GenericP gclosure)
{
RenameClosureP closure = (RenameClosureP) gclosure;
ShapeTableP shapes = closure->shapes;
ShapeTableP lib_shapes = closure->lib_shapes;
ShapeEntryP entry = shape_table_add (shapes, shape);
ShapeEntryP lib_entry = shape_table_add (lib_shapes, shape);
NameTableP table = shape_entry_name_table (entry);
NameTableP lib_table = shape_entry_name_table (lib_entry);
NameKeyPairListEntryP name = name_key_pair_list_head (names);
for (; name; name = name_key_pair_list_entry_next (name)) {
NameKeyP from = name_key_pair_list_entry_from (name);
NameKeyP to = name_key_pair_list_entry_to (name);
debug_info_l_rename (shape, from, to);
name_table_add_rename (table, from, to);
name_table_add_rename (lib_table, from, to);
}
name_table_resolve_renames (table, shape, TRUE);
name_table_resolve_renames (lib_table, shape, FALSE);
}
static void
linker_rename PROTO_N ((arg_data, shapes, lib_shapes))
PROTO_T (ArgDataP arg_data X
ShapeTableP shapes X
ShapeTableP lib_shapes)
{
RenameClosureT closure;
closure.shapes = shapes;
closure.lib_shapes = lib_shapes;
rename_control_iter (arg_data_get_renames (arg_data), linker_rename_1,
(GenericP) &closure);
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
static void
linker_read_capsules PROTO_N ((arg_data, units, shapes))
PROTO_T (ArgDataP arg_data X
UnitTableP units X
ShapeTableP shapes)
{
unsigned num_input_files = arg_data_get_num_files (arg_data);
CStringP *input_files = arg_data_get_files (arg_data);
unsigned i;
for (i = 0; i < num_input_files; i ++) {
CapsuleP capsule;
if ((capsule = capsule_create_stream_input (input_files [i])) !=
NIL (CapsuleP)) {
capsule_read (capsule, units, shapes);
capsule_close (capsule);
} else {
E_cannot_open_input_file (input_files [i]);
}
}
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
static void
linker_load_libraries PROTO_N ((arg_data, lib_shapes))
PROTO_T (ArgDataP arg_data X
ShapeTableP lib_shapes)
{
CStringP *files = arg_data_library_files (arg_data);
CStringP *paths = arg_data_library_paths (arg_data);
unsigned num_files = arg_data_num_library_files (arg_data);
unsigned num_paths = arg_data_num_library_paths (arg_data);
unsigned i;
for (i = 0; i < num_files; i ++) {
LibraryP library = NIL (LibraryP);
if (file_name_is_basename (files [i])) {
unsigned j;
for (j = 0; j < num_paths; j ++) {
CStringP name = file_name_expand (paths [j], files [i], "tl");
if ((library = library_create_stream_input (name)) !=
NIL (LibraryP)) {
goto found;
} else {
DEALLOCATE (name);
}
}
E_cannot_open_library_file (files [i]);
} else {
if ((library = library_create_stream_input (files [i])) ==
NIL (LibraryP)) {
E_cannot_open_library_file (files [i]);
}
}
found:
if (library) {
library_read (library, lib_shapes);
library_close (library);
}
}
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
static void
linker_suppress_1 PROTO_N ((shape, all, names, gclosure))
PROTO_T (NStringP shape X
BoolT all X
NameKeyListP names X
GenericP gclosure)
{
ShapeTableP lib_shapes = (ShapeTableP) gclosure;
ShapeEntryP entry = shape_table_get (lib_shapes, shape);
if (entry) {
NameTableP table = shape_entry_name_table (entry);
NameKeyListEntryP name = name_key_list_head (names);
if (all) {
name_table_iter (table, name_entry_suppress, (GenericP) shape);
}
for (; name; name = name_key_list_entry_next (name)) {
NameKeyP key = name_key_list_entry_key (name);
NameEntryP name_entry = name_table_get (table, key);
if (name_entry) {
debug_info_l_suppress (shape, key);
name_entry_set_lib_definition (name_entry, NIL (LibCapsuleP));
}
}
}
}
static void
linker_suppress PROTO_N ((arg_data, lib_shapes))
PROTO_T (ArgDataP arg_data X
ShapeTableP lib_shapes)
{
if (arg_data_get_suppress_mult (arg_data)) {
shape_table_iter (lib_shapes, shape_entry_lib_suppress_mult,
NIL (GenericP));
}
shape_control_iter (arg_data_get_suppresses (arg_data), linker_suppress_1,
(GenericP) lib_shapes);
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
static void
linker_resolve_undefined PROTO_N ((units, shapes, lib_shapes))
PROTO_T (UnitTableP units X
ShapeTableP shapes X
ShapeTableP lib_shapes)
{
ShapeLibClosureT closure;
closure.lib_shapes = lib_shapes;
closure.units = units;
closure.shapes = shapes;
do {
closure.did_define = FALSE;
shape_table_iter (shapes, shape_entry_resolve_undefined,
(GenericP) &closure);
} while (closure.did_define);
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
static void
linker_hide PROTO_N ((shape, all, names, gclosure))
PROTO_T (NStringP shape X
BoolT all X
NameKeyListP names X
GenericP gclosure)
{
ShapeTableP shapes = (ShapeTableP) gclosure;
ShapeEntryP entry = shape_table_get (shapes, shape);
if (entry == NIL (ShapeEntryP)) {
E_cannot_hide_shape (shape);
} else {
NameTableP table = shape_entry_name_table (entry);
NameKeyListEntryP name = name_key_list_head (names);
if (all) {
name_table_iter (table, name_entry_hide_defd, (GenericP) shape);
}
for (; name; name = name_key_list_entry_next (name)) {
NameKeyP key = name_key_list_entry_key (name);
NameEntryP name_entry = name_table_get (table, key);
if (name_entry == NIL (NameEntryP)) {
E_cannot_hide (shape, key);
} else if (name_entry_get_use (name_entry) & U_DEFD) {
debug_info_l_hide (shape, key);
name_entry_hide (name_entry);
} else {
E_cannot_hide_undefined (shape, key);
}
}
}
}
static void
linker_keep PROTO_N ((shape, all, names, gclosure))
PROTO_T (NStringP shape X
BoolT all X
NameKeyListP names X
GenericP gclosure)
{
ShapeTableP shapes = (ShapeTableP) gclosure;
ShapeEntryP entry = shape_table_get (shapes, shape);
if (entry == NIL (ShapeEntryP)) {
E_cannot_keep_shape (shape);
} else {
NameTableP table = shape_entry_name_table (entry);
NameKeyListEntryP name = name_key_list_head (names);
if (all) {
name_table_iter (table, name_entry_keep, (GenericP) shape);
}
for (; name; name = name_key_list_entry_next (name)) {
NameKeyP key = name_key_list_entry_key (name);
NameEntryP name_entry = name_table_get (table, key);
if (name_entry == NIL (NameEntryP)) {
E_cannot_keep (shape, key);
} else {
debug_info_l_keep (shape, key);
name_entry_unhide (name_entry);
}
}
}
}
static void
linker_hide_and_keep PROTO_N ((arg_data, shapes))
PROTO_T (ArgDataP arg_data X
ShapeTableP shapes)
{
if (arg_data_get_all_hide_defd (arg_data)) {
shape_table_iter (shapes, shape_entry_hide_all_defd, NIL (GenericP));
}
shape_control_iter (arg_data_get_hides (arg_data), linker_hide,
(GenericP) shapes);
shape_control_iter (arg_data_get_keeps (arg_data), linker_keep,
(GenericP) shapes);
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
static void
linker_write_capsule PROTO_N ((arg_data, units, shapes))
PROTO_T (ArgDataP arg_data X
UnitTableP units X
ShapeTableP shapes)
{
CStringP output_file = arg_data_get_output_file (arg_data);
CapsuleP capsule;
if ((capsule = capsule_create_stream_output (output_file)) !=
NIL (CapsuleP)) {
capsule_write (capsule, units, shapes);
capsule_close (capsule);
} else {
E_cannot_open_output_file (output_file);
UNREACHED;
}
if (error_max_reported_severity () >= ERROR_SEVERITY_ERROR) {
exit (EXIT_FAILURE);
UNREACHED;
}
}
/*--------------------------------------------------------------------------*/
void
linker_main PROTO_N ((arg_data))
PROTO_T (ArgDataP arg_data)
{
UnitTableP units = unit_table_create ();
ShapeTableP shapes = shape_table_create ();
ShapeTableP lib_shapes = shape_table_create ();
linker_rename (arg_data, shapes, lib_shapes);
linker_read_capsules (arg_data, units, shapes);
linker_load_libraries (arg_data, lib_shapes);
linker_suppress (arg_data, lib_shapes);
linker_resolve_undefined (units, shapes, lib_shapes);
linker_hide_and_keep (arg_data, shapes);
linker_write_capsule (arg_data, units, shapes);
}
/*
* Local variables(smf):
* eval: (include::add-path-entry "../os-interface" "../library" "../tdf")
* eval: (include::add-path-entry "../generated")
* End:
**/