binutils-gdb/ld/lexsup.c
Ian Lance Taylor 630f4ac9c6 * ld.h (parsing_defsym): Declare.
* ldlex.h (lex_string): Declare.
	* ldlex.l (lex_string): Define.
	* lexsup.c (parsing_defsym): Define.
	(parse_args): In OPTION_DEFSYM case, set lex_string before calling
	lex_redirect, and clear it after calling yyparse.  Set
	parsing_defsym around call to yyparse.
	* ldmain.c (main): Set lex_string before calling lex_redirect, and
	clear it after calling yyparse.
	* ldmisc.c (vfinfo): For %S, handle --defsym arguments and built
	in linker scripts correctly.
PR 8092.
1995-09-28 19:18:07 +00:00

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/* Parse options for the GNU linker.
Copyright (C) 1991, 92, 93, 94, 1995 Free Software Foundation, Inc.
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 "bfd.h"
#include "sysdep.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "getopt.h"
#include "bfdlink.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldgram.h"
#include "ldlex.h"
#include "ldfile.h"
#include "ldver.h"
#include "ldemul.h"
/* Somewhere above, sys/stat.h got included . . . . */
#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
/* Omit args to avoid the possibility of clashing with a system header
that might disagree about consts. */
unsigned long strtoul ();
static void set_default_dirlist PARAMS ((char *dirlist_ptr));
static void set_section_start PARAMS ((char *sect, char *valstr));
/* Non-zero if we are processing a --defsym from the command line. */
int parsing_defsym = 0;
void
parse_args (argc, argv)
int argc;
char **argv;
{
int i;
int ingroup = 0;
char *default_dirlist = NULL;
/* Starting the short option string with '-' is for programs that
expect options and other ARGV-elements in any order and that care about
the ordering of the two. We describe each non-option ARGV-element
as if it were the argument of an option with character code 1. */
const char *shortopts =
"-a:A:B::b:c:de:F::G:gh:iL:l:Mm:NnO:o:R:rSsT:tu:VvXxY:y:z:()";
/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
#define OPTION_ASSERT 150
#define OPTION_CALL_SHARED (OPTION_ASSERT + 1)
#define OPTION_DEFSYM (OPTION_CALL_SHARED + 1)
#define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1)
#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
#define OPTION_EL (OPTION_EB + 1)
#define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1)
#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
#define OPTION_IGNORE (OPTION_HELP + 1)
#define OPTION_MAP (OPTION_IGNORE + 1)
#define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
#define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1)
#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
#define OPTION_OFORMAT (OPTION_NON_SHARED + 1)
#define OPTION_RELAX (OPTION_OFORMAT + 1)
#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
#define OPTION_SHARED (OPTION_RPATH + 1)
#define OPTION_SONAME (OPTION_SHARED + 1)
#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
#define OPTION_STATS (OPTION_SORT_COMMON + 1)
#define OPTION_SYMBOLIC (OPTION_STATS + 1)
#define OPTION_TBSS (OPTION_SYMBOLIC + 1)
#define OPTION_TDATA (OPTION_TBSS + 1)
#define OPTION_TTEXT (OPTION_TDATA + 1)
#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
#define OPTION_VERBOSE (OPTION_UR + 1)
#define OPTION_VERSION (OPTION_VERBOSE + 1)
#define OPTION_WARN_COMMON (OPTION_VERSION + 1)
#define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1)
#define OPTION_WARN_ONCE (OPTION_WARN_CONSTRUCTORS + 1)
#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1)
#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
static struct option longopts[] = {
/* Sorted alphabeticaly, except for the PE options grouped at the end. */
{"assert", required_argument, NULL, OPTION_ASSERT},
{"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
{"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
{"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
{"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
{"dc", no_argument, NULL, 'd'},
{"defsym", required_argument, NULL, OPTION_DEFSYM},
{"dll-verbose", no_argument, NULL, OPTION_VERSION}, /* Linux. */
{"dn", no_argument, NULL, OPTION_NON_SHARED},
{"dp", no_argument, NULL, 'd'},
{"dy", no_argument, NULL, OPTION_CALL_SHARED},
{"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
{"EB", no_argument, NULL, OPTION_EB},
{"EL", no_argument, NULL, OPTION_EL},
{"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
{"end-group", no_argument, NULL, ')'},
{"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
{"format", required_argument, NULL, 'b'},
{"help", no_argument, NULL, OPTION_HELP},
{"Map", required_argument, NULL, OPTION_MAP},
{"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
{"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
{"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
{"non_shared", no_argument, NULL, OPTION_NON_SHARED},
{"oformat", required_argument, NULL, OPTION_OFORMAT},
{"Qy", no_argument, NULL, OPTION_IGNORE},
{"qmagic", no_argument, NULL, OPTION_IGNORE}, /* Linux compatibility. */
{"relax", no_argument, NULL, OPTION_RELAX},
{"retain-symbols-file", required_argument, NULL, OPTION_RETAIN_SYMBOLS_FILE},
{"rpath", required_argument, NULL, OPTION_RPATH},
{"shared", no_argument, NULL, OPTION_SHARED},
{"soname", required_argument, NULL, OPTION_SONAME},
{"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
{"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
{"start-group", no_argument, NULL, '('},
{"stats", no_argument, NULL, OPTION_STATS},
{"static", no_argument, NULL, OPTION_NON_SHARED},
{"Tbss", required_argument, NULL, OPTION_TBSS},
{"Tdata", required_argument, NULL, OPTION_TDATA},
{"Ttext", required_argument, NULL, OPTION_TTEXT},
{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
{"Ur", no_argument, NULL, OPTION_UR},
{"verbose", no_argument, NULL, OPTION_VERBOSE},
{"version", no_argument, NULL, OPTION_VERSION},
{"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
{"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
{"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
{"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
{"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
{"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
{NULL, no_argument, NULL, 0}
};
/* The -G option is ambiguous on different platforms. Sometimes it
specifies the largest data size to put into the small data
section. Sometimes it is equivalent to --shared. Unfortunately,
the first form takes an argument, while the second does not.
We need to permit the --shared form because on some platforms,
such as Solaris, gcc -shared will pass -G to the linker.
To permit either usage, we look through the argument list. If we
find -G not followed by a number, we change it into --shared.
This will work for most normal cases. */
for (i = 1; i < argc; i++)
if (strcmp (argv[i], "-G") == 0
&& (i + 1 >= argc
|| ! isdigit (argv[i + 1][0])))
argv[i] = (char *) "--shared";
while (1)
{
/* getopt_long_only is like getopt_long, but '-' as well as '--' can
indicate a long option. */
int longind;
int optc;
if (ldemul_parse_args (argc, argv))
continue;
optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
if (optc == -1)
break;
switch (optc)
{
default:
xexit (1);
case 1: /* File name. */
lang_add_input_file (optarg, lang_input_file_is_file_enum,
(char *) NULL);
break;
case OPTION_IGNORE:
break;
case 'a':
/* For HP/UX compatibility. Actually -a shared should mean
``use only shared libraries'' but, then, we don't
currently support shared libraries on HP/UX anyhow. */
if (strcmp (optarg, "archive") == 0)
config.dynamic_link = false;
else if (strcmp (optarg, "shared") == 0
|| strcmp (optarg, "default") == 0)
config.dynamic_link = true;
else
einfo ("%P%F: unrecognized -a option `%s'\n", optarg);
break;
case OPTION_ASSERT:
/* FIXME: We just ignore these, except for pure-text, but we
should handle them. */
if (strcmp (optarg, "definitions") == 0)
;
else if (strcmp (optarg, "nodefinitions") == 0)
;
else if (strcmp (optarg, "nosymbolic") == 0)
;
else if (strcmp (optarg, "pure-text") == 0)
{
/* FIXME: This is wrong. We do it this way as a hack to
support SunOS4, on which gcc -shared will pass
-assert pure-text to the linker. The SunOS linker
will automatically create a shared library if there
are any undefined symbols, but our linker does not
know how to do that (it seems to require an extra
pass over the relocs). */
link_info.shared = true;
}
else
einfo ("%P%F: unrecognized -assert option `%s'\n", optarg);
break;
case 'A':
ldfile_add_arch (optarg);
break;
case 'b':
lang_add_target (optarg);
break;
case 'c':
ldfile_open_command_file (optarg);
parser_input = input_mri_script;
yyparse ();
break;
case OPTION_CALL_SHARED:
config.dynamic_link = true;
break;
case OPTION_NON_SHARED:
config.dynamic_link = false;
break;
case 'd':
command_line.force_common_definition = true;
break;
case OPTION_DEFSYM:
lex_string = optarg;
lex_redirect (optarg);
parser_input = input_defsym;
parsing_defsym = 1;
yyparse ();
parsing_defsym = 0;
lex_string = NULL;
break;
case OPTION_DYNAMIC_LINKER:
command_line.interpreter = optarg;
break;
case OPTION_EB:
command_line.endian = ENDIAN_BIG;
break;
case OPTION_EL:
command_line.endian = ENDIAN_LITTLE;
break;
case OPTION_EMBEDDED_RELOCS:
command_line.embedded_relocs = true;
break;
case OPTION_EXPORT_DYNAMIC:
command_line.export_dynamic = true;
break;
case 'e':
lang_add_entry (optarg, 1);
break;
case 'F':
/* Ignore. */
break;
case 'G':
{
char *end;
g_switch_value = strtoul (optarg, &end, 0);
if (*end)
einfo ("%P%F: invalid number `%s'\n", optarg);
}
break;
case 'g':
/* Ignore. */
break;
case OPTION_HELP:
help ();
xexit (0);
break;
case 'L':
ldfile_add_library_path (optarg, true);
break;
case 'l':
lang_add_input_file (optarg, lang_input_file_is_l_enum,
(char *) NULL);
break;
case 'M':
config.map_filename = "-";
break;
case 'm':
/* Ignore. Was handled in a pre-parse. */
break;
case OPTION_MAP:
config.map_filename = optarg;
break;
case 'N':
config.text_read_only = false;
config.magic_demand_paged = false;
break;
case 'n':
config.magic_demand_paged = false;
break;
case OPTION_NO_KEEP_MEMORY:
link_info.keep_memory = false;
break;
case OPTION_NOINHIBIT_EXEC:
force_make_executable = true;
break;
case 'O':
/* FIXME "-O<non-digits> <value>" used to set the address of
section <non-digits>. Was this for compatibility with
something, or can we create a new option to do that
(with a syntax similar to -defsym)?
getopt can't handle two args to an option without kludges. */
break;
case 'o':
lang_add_output (optarg, 0);
break;
case OPTION_OFORMAT:
lang_add_output_format (optarg, (char *) NULL, (char *) NULL, 0);
break;
case 'i':
case 'r':
link_info.relocateable = true;
config.build_constructors = false;
config.magic_demand_paged = false;
config.text_read_only = false;
config.dynamic_link = false;
break;
case 'R':
/* The GNU linker traditionally uses -R to mean to include
only the symbols from a file. The Solaris linker uses -R
to set the path used by the runtime linker to find
libraries. This is the GNU linker -rpath argument. We
try to support both simultaneously by checking the file
named. If it is a directory, rather than a regular file,
we assume -rpath was meant. */
{
struct stat s;
if (stat (optarg, &s) >= 0
&& ! S_ISDIR (s.st_mode))
{
lang_add_input_file (optarg,
lang_input_file_is_symbols_only_enum,
(char *) NULL);
break;
}
}
/* Fall through. */
case OPTION_RPATH:
if (command_line.rpath == NULL)
command_line.rpath = buystring (optarg);
else
{
char *buf;
buf = xmalloc (strlen (command_line.rpath)
+ strlen (optarg)
+ 2);
sprintf (buf, "%s:%s", command_line.rpath, optarg);
free (command_line.rpath);
command_line.rpath = buf;
}
break;
case OPTION_RELAX:
command_line.relax = true;
break;
case OPTION_RETAIN_SYMBOLS_FILE:
add_keepsyms_file (optarg);
break;
case 'S':
link_info.strip = strip_debugger;
break;
case 's':
link_info.strip = strip_all;
break;
case OPTION_SHARED:
link_info.shared = true;
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
command_line.soname = optarg;
break;
case OPTION_SORT_COMMON:
config.sort_common = true;
break;
case OPTION_STATS:
config.stats = true;
break;
case OPTION_SYMBOLIC:
link_info.symbolic = true;
break;
case 't':
trace_files = true;
break;
case 'T':
ldfile_open_command_file (optarg);
parser_input = input_script;
yyparse ();
break;
case OPTION_TBSS:
set_section_start (".bss", optarg);
break;
case OPTION_TDATA:
set_section_start (".data", optarg);
break;
case OPTION_TTEXT:
set_section_start (".text", optarg);
break;
case OPTION_TRADITIONAL_FORMAT:
config.traditional_format = true;
break;
case OPTION_UR:
link_info.relocateable = true;
config.build_constructors = true;
config.magic_demand_paged = false;
config.text_read_only = false;
config.dynamic_link = false;
break;
case 'u':
ldlang_add_undef (optarg);
break;
case OPTION_VERBOSE:
ldversion (1);
version_printed = true;
trace_file_tries = true;
break;
case 'v':
ldversion (0);
version_printed = true;
break;
case 'V':
ldversion (1);
version_printed = true;
break;
case OPTION_VERSION:
ldversion (0);
version_printed = true;
break;
case OPTION_WARN_COMMON:
config.warn_common = true;
break;
case OPTION_WARN_CONSTRUCTORS:
config.warn_constructors = true;
break;
case OPTION_WARN_ONCE:
config.warn_once = true;
break;
case OPTION_WHOLE_ARCHIVE:
whole_archive = true;
break;
case 'X':
link_info.discard = discard_l;
break;
case 'x':
link_info.discard = discard_all;
break;
case 'Y':
if (strncmp (optarg, "P,", 2) == 0)
optarg += 2;
default_dirlist = optarg;
break;
case 'y':
add_ysym (optarg);
break;
case 'z':
/* We accept and ignore this option for Solaris
compatibility. Actually, on Solaris, optarg is not
ignored. Someday we should handle it correctly. FIXME. */
break;
case OPTION_SPLIT_BY_RELOC:
config.split_by_reloc = atoi (optarg);
break;
case OPTION_SPLIT_BY_FILE:
config.split_by_file = true;
break;
case '(':
if (ingroup)
{
fprintf (stderr,
"%s: may not nest groups (--help for usage)\n",
program_name);
xexit (1);
}
lang_enter_group ();
ingroup = 1;
break;
case ')':
if (! ingroup)
{
fprintf (stderr,
"%s: group ended before it began (--help for usage)\n",
program_name);
xexit (1);
}
lang_leave_group ();
ingroup = 0;
break;
}
}
if (ingroup)
lang_leave_group ();
if (default_dirlist != NULL)
set_default_dirlist (default_dirlist);
}
/* Add the (colon-separated) elements of DIRLIST_PTR to the
library search path. */
static void
set_default_dirlist (dirlist_ptr)
char *dirlist_ptr;
{
char *p;
while (1)
{
p = strchr (dirlist_ptr, ':');
if (p != NULL)
*p = 0;
if (*dirlist_ptr)
ldfile_add_library_path (dirlist_ptr, true);
if (p == NULL)
break;
*p = ':';
dirlist_ptr = p + 1;
}
}
static void
set_section_start (sect, valstr)
char *sect, *valstr;
{
char *end;
unsigned long val = strtoul (valstr, &end, 16);
if (*end)
einfo ("%P%F: invalid hex number `%s'\n", valstr);
lang_section_start (sect, exp_intop (val));
}