[binutils.git] / ld / lexsup.c

/* Parse options for the GNU linker.
   Copyright (C) 1991, 92, 93, 94 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 "config.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"

/* 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));

/* WINDOWS_NT; declare additional functions */
static void set_subsystem PARAMS ((char *subsystem_type));
static void set_stack_heap PARAMS ((char *valstr, boolean for_heap));

void
parse_args (argc, argv)
     int argc;
     char **argv;
{
  int i;
  int ingroup = 0;

  /* 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:giL: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_CALL_SHARED		150
#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_HEAP			(OPTION_EL + 1)
#define OPTION_EMBEDDED_RELOCS		(OPTION_HEAP + 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_STACK                    (OPTION_SORT_COMMON + 1) /*WINDOWS_NT*/
#define OPTION_STATS			(OPTION_STACK + 1)
#define OPTION_SUBSYSTEM                (OPTION_STATS + 1) /* WINDOWS_NT */
#define OPTION_SYMBOLIC			(OPTION_SUBSYSTEM + 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_ONCE		(OPTION_WARN_COMMON + 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)
#define OPTION_BASE_FILE		(OPTION_WHOLE_ARCHIVE + 1)
  static struct option longopts[] = {
    {"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'},
    {"heap", required_argument, NULL, OPTION_HEAP}, /* WINDOWS_NT */
    {"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},
    {"stack", required_argument, NULL, OPTION_STACK}, /* WINDOWS_NT */
    {"start-group", no_argument, NULL, '('},
    {"stats", no_argument, NULL, OPTION_STATS},
    {"static", no_argument, NULL, OPTION_NON_SHARED},
    {"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, /* WINDOWS_NT */
    {"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-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},
    {"base-file", required_argument, NULL, OPTION_BASE_FILE},
    {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 = 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 '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_redirect (optarg);
	  parser_input = input_defsym;
	  yyparse ();
	  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_HEAP:  /* WINDOWS_NT */
	  link_info.stack_heap_parameters.heap_defined = true;
	  set_stack_heap (optarg, true);
	  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.  */
	  set_default_dirlist (optarg);
	  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 OPTION_SONAME:
	  command_line.soname = optarg;
	  break;
	case OPTION_SORT_COMMON:
	  config.sort_common = true;
	  break;
	case OPTION_STACK:  /* WINDOWS_NT */
	  link_info.stack_heap_parameters.stack_defined = true;
	  set_stack_heap (optarg, false);
	  break;
	case OPTION_STATS:
	  config.stats = true;
	  break;
	case OPTION_SUBSYSTEM:  /* WINDOWS_NT */
	  set_subsystem (optarg);
	  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_ONCE:
	  config.warn_once = true;
	  break;
	case OPTION_WHOLE_ARCHIVE:
	  whole_archive = true;
	  break;
	case OPTION_BASE_FILE:
	  link_info.base_file = (PTR) fopen (optarg,"w");
	  if (link_info.base_file == NULL)
	    {
	      fprintf (stderr, "%s: Can't open base file %s\n",
		       program_name, optarg);
	      xexit (1);
	    }
	  break;
	case 'X':
	  link_info.discard = discard_l;
	  break;
	case 'x':
	  link_info.discard = discard_all;
	  break;
	case 'Y':
	  set_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 ();
}

/* 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));
}

/* WINDOWS_NT; added routines to get the subsystem type, heap and/or stack
   parameters which may be input from the command line */
static void
set_subsystem (subsystem_type)
  char *subsystem_type;
{
  if (strcmp (subsystem_type, "native") == 0)
    {
      link_info.subsystem = native;
    }
  else if (strcmp (subsystem_type, "windows") == 0)
    {
      link_info.subsystem = windows;
    }
  else if (strcmp (subsystem_type, "console") == 0)
    {
      link_info.subsystem = console;
    }
  else if (strcmp (subsystem_type, "os2") == 0)
    {
      link_info.subsystem = os2;
    }
  else if (strcmp (subsystem_type, "posix") == 0)
    {
      link_info.subsystem = posix;
    }
  else
    einfo ("%P%F: invalid subsystem type `%s'\n", subsystem_type);

}

static void
set_stack_heap (valstr, for_heap)
  char *valstr;
  boolean for_heap;
{
  char *begin_commit, *end;
  bfd_vma reserve = 0;
  bfd_vma commit  = 0;

  /* There may be two values passed in to the -stack or -heap switches like
     this:
       -stack 0x10000,0x100
     where the first parameter is the stack (or heap) reserve and the second
     is commit.  The second parameter is optional. */

  /* get the reserve value */
  reserve = strtoul (valstr, &begin_commit, 16);

  if (strcmp (valstr, begin_commit) == 0)  
    /* the reserve value couldn't be read */
    einfo ("%P%F: invalid hex number for reserve[,commit] '%s'\n", valstr); 
  else if (strcmp (begin_commit, "\0") != 0)  /* check for a commit value */
    {
     begin_commit += 1;  /* increment begin_commit to point past ',' */
     commit = strtoul (begin_commit, &end, 16);
     if (strcmp (end, begin_commit) == 0)
       einfo ("%P%F: invalid hex number for commit '%s'\n", begin_commit);
    }
   
  if (for_heap)
   {
    link_info.stack_heap_parameters.heap_reserve = reserve;     
    link_info.stack_heap_parameters.heap_commit  = commit;     
   }
  else
   {
    link_info.stack_heap_parameters.stack_reserve = reserve;     
    link_info.stack_heap_parameters.stack_commit  = commit;     
   }

#if DUMP_INFO
  printf ("reserve = %8x  commit = %8x\n", reserve, commit);
#endif
}
Commit	Line	Data
d4e5e3c3 DM	1	/* Parse options for the GNU linker.
	2	Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc.
	3
	4	This file is part of GLD, the Gnu Linker.
	5
	6	GLD is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	GLD is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GLD; see the file COPYING. If not, write to
943fbd5b	18	the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
d4e5e3c3 DM	19
	20	#include "bfd.h"
	21	#include "sysdep.h"
	22	#include <stdio.h>
	23	#include <string.h>
22d3533c	24	#include <ctype.h>
d4e5e3c3 DM	25	#include "getopt.h"
	26	#include "bfdlink.h"
	27	#include "config.h"
	28	#include "ld.h"
	29	#include "ldmain.h"
	30	#include "ldmisc.h"
	31	#include "ldexp.h"
	32	#include "ldlang.h"
	33	#include "ldgram.h"
	34	#include "ldlex.h"
	35	#include "ldfile.h"
4725fb48	36	#include "ldver.h"
d4e5e3c3	37
809ee7e0 ILT	38	/* Somewhere above, sys/stat.h got included . . . . */
	39	#if !defined(S_ISDIR) && defined(S_IFDIR)
	40	#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
	41	#endif
	42
d4e5e3c3 DM	43	/* Omit args to avoid the possibility of clashing with a system header
	44	that might disagree about consts. */
	45	unsigned long strtoul ();
	46
	47	static void set_default_dirlist PARAMS ((char *dirlist_ptr));
	48	static void set_section_start PARAMS ((char sect, char valstr));
	49
de71eb77 SC	50	/* WINDOWS_NT; declare additional functions */
	51	static void set_subsystem PARAMS ((char *subsystem_type));
	52	static void set_stack_heap PARAMS ((char *valstr, boolean for_heap));
	53
d4e5e3c3 DM	54	void
	55	parse_args (argc, argv)
	56	int argc;
	57	char **argv;
	58	{
22d3533c	59	int i;
db770dfa ILT	60	int ingroup = 0;
db770dfa ILT	61
d4e5e3c3 DM	62	/* Starting the short option string with '-' is for programs that
	63	expect options and other ARGV-elements in any order and that care about
	64	the ordering of the two. We describe each non-option ARGV-element
	65	as if it were the argument of an option with character code 1. */
	66
db770dfa	67	const char *shortopts =
22d3533c	68	"-a:A:B::b:c:de:F::G:giL:l:Mm:NnO:o:R:rSsT:tu:VvXxY:y:z:()";
d4e5e3c3	69
d5b79a89 DM	70	/* 150 isn't special; it's just an arbitrary non-ASCII char value. */
d5b79a89 DM	71
bec7a138 ILT	72	#define OPTION_CALL_SHARED 150
bec7a138 ILT	73	#define OPTION_DEFSYM (OPTION_CALL_SHARED + 1)
7fb9ca5f ILT	74	#define OPTION_DYNAMIC_LINKER (OPTION_DEFSYM + 1)
7fb9ca5f ILT	75	#define OPTION_EB (OPTION_DYNAMIC_LINKER + 1)
bec7a138	76	#define OPTION_EL (OPTION_EB + 1)
de71eb77 SC	77	#define OPTION_HEAP (OPTION_EL + 1)
	78	#define OPTION_EMBEDDED_RELOCS (OPTION_HEAP + 1)
	79	#define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1)
	80	#define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1)
bec7a138 ILT	81	#define OPTION_IGNORE (OPTION_HELP + 1)
	82	#define OPTION_MAP (OPTION_IGNORE + 1)
	83	#define OPTION_NO_KEEP_MEMORY (OPTION_MAP + 1)
	84	#define OPTION_NOINHIBIT_EXEC (OPTION_NO_KEEP_MEMORY + 1)
	85	#define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1)
	86	#define OPTION_OFORMAT (OPTION_NON_SHARED + 1)
	87	#define OPTION_RELAX (OPTION_OFORMAT + 1)
	88	#define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1)
809ee7e0 ILT	89	#define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1)
	90	#define OPTION_SHARED (OPTION_RPATH + 1)
	91	#define OPTION_SONAME (OPTION_SHARED + 1)
	92	#define OPTION_SORT_COMMON (OPTION_SONAME + 1)
de71eb77 SC	93	#define OPTION_STACK (OPTION_SORT_COMMON + 1) /WINDOWS_NT/
	94	#define OPTION_STATS (OPTION_STACK + 1)
	95	#define OPTION_SUBSYSTEM (OPTION_STATS + 1) /* WINDOWS_NT */
4551e108 ILT	96	#define OPTION_SYMBOLIC (OPTION_SUBSYSTEM + 1)
4551e108 ILT	97	#define OPTION_TBSS (OPTION_SYMBOLIC + 1)
bec7a138 ILT	98	#define OPTION_TDATA (OPTION_TBSS + 1)
	99	#define OPTION_TTEXT (OPTION_TDATA + 1)
	100	#define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1)
	101	#define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1)
de71eb77 SC	102	#define OPTION_VERBOSE (OPTION_UR + 1)
de71eb77 SC	103	#define OPTION_VERSION (OPTION_VERBOSE + 1)
bec7a138	104	#define OPTION_WARN_COMMON (OPTION_VERSION + 1)
809ee7e0	105	#define OPTION_WARN_ONCE (OPTION_WARN_COMMON + 1)
de71eb77 SC	106	#define OPTION_SPLIT_BY_RELOC (OPTION_WARN_ONCE + 1)
	107	#define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1)
	108	#define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1)
	109	#define OPTION_BASE_FILE (OPTION_WHOLE_ARCHIVE + 1)
d5b79a89	110	static struct option longopts[] = {
db770dfa ILT	111	{"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
db770dfa ILT	112	{"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
4551e108	113	{"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
d5b79a89	114	{"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
d4e5e3c3	115	{"dc", no_argument, NULL, 'd'},
d5b79a89	116	{"defsym", required_argument, NULL, OPTION_DEFSYM},
809ee7e0	117	{"dll-verbose", no_argument, NULL, OPTION_VERSION}, /* Linux. */
2a9fa50c	118	{"dn", no_argument, NULL, OPTION_NON_SHARED},
d4e5e3c3	119	{"dp", no_argument, NULL, 'd'},
2a9fa50c	120	{"dy", no_argument, NULL, OPTION_CALL_SHARED},
7fb9ca5f	121	{"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
d5b79a89	122	{"EB", no_argument, NULL, OPTION_EB},
d5b79a89	123	{"EL", no_argument, NULL, OPTION_EL},
de71eb77	124	{"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
db770dfa	125	{"end-group", no_argument, NULL, ')'},
de71eb77	126	{"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
d4e5e3c3	127	{"format", required_argument, NULL, 'b'},
de71eb77	128	{"heap", required_argument, NULL, OPTION_HEAP}, /* WINDOWS_NT */
d5b79a89	129	{"help", no_argument, NULL, OPTION_HELP},
d5b79a89	130	{"Map", required_argument, NULL, OPTION_MAP},
d5b79a89	131	{"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
d5b79a89 DM	132	{"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
d5b79a89 DM	133	{"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
2a9fa50c	134	{"non_shared", no_argument, NULL, OPTION_NON_SHARED},
d5b79a89	135	{"oformat", required_argument, NULL, OPTION_OFORMAT},
2a9fa50c	136	{"Qy", no_argument, NULL, OPTION_IGNORE},
cbbf9608	137	{"qmagic", no_argument, NULL, OPTION_IGNORE}, /* Linux compatibility. */
d5b79a89	138	{"relax", no_argument, NULL, OPTION_RELAX},
db770dfa	139	{"retain-symbols-file", required_argument, NULL, OPTION_RETAIN_SYMBOLS_FILE},
809ee7e0	140	{"rpath", required_argument, NULL, OPTION_RPATH},
db770dfa	141	{"shared", no_argument, NULL, OPTION_SHARED},
809ee7e0	142	{"soname", required_argument, NULL, OPTION_SONAME},
d5b79a89 DM	143	{"sort-common", no_argument, NULL, OPTION_SORT_COMMON},
d5b79a89 DM	144	{"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
de71eb77	145	{"stack", required_argument, NULL, OPTION_STACK}, /* WINDOWS_NT */
db770dfa	146	{"start-group", no_argument, NULL, '('},
d5b79a89	147	{"stats", no_argument, NULL, OPTION_STATS},
42792411	148	{"static", no_argument, NULL, OPTION_NON_SHARED},
de71eb77	149	{"subsystem", required_argument, NULL, OPTION_SUBSYSTEM}, /* WINDOWS_NT */
d5b79a89	150	{"Tbss", required_argument, NULL, OPTION_TBSS},
d5b79a89	151	{"Tdata", required_argument, NULL, OPTION_TDATA},
d5b79a89	152	{"Ttext", required_argument, NULL, OPTION_TTEXT},
c96386c4	153	{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
d5b79a89	154	{"Ur", no_argument, NULL, OPTION_UR},
de71eb77	155	{"verbose", no_argument, NULL, OPTION_VERBOSE},
d5b79a89	156	{"version", no_argument, NULL, OPTION_VERSION},
d5b79a89	157	{"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
809ee7e0	158	{"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
de71eb77 SC	159	{"split-by-reloc", required_argument, NULL, OPTION_SPLIT_BY_RELOC},
	160	{"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE},
	161	{"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
	162	{"base-file", required_argument, NULL, OPTION_BASE_FILE},
d4e5e3c3 DM	163	{NULL, no_argument, NULL, 0}
	164	};
	165
22d3533c ILT	166	/* The -G option is ambiguous on different platforms. Sometimes it
	167	specifies the largest data size to put into the small data
	168	section. Sometimes it is equivalent to --shared. Unfortunately,
	169	the first form takes an argument, while the second does not.
	170
	171	We need to permit the --shared form because on some platforms,
	172	such as Solaris, gcc -shared will pass -G to the linker.
	173
	174	To permit either usage, we look through the argument list. If we
	175	find -G not followed by a number, we change it into --shared.
	176	This will work for most normal cases. */
	177	for (i = 1; i < argc; i++)
	178	if (strcmp (argv[i], "-G") == 0
	179	&& (i + 1 >= argc
	180	\|\| ! isdigit (argv[i + 1][0])))
	181	argv[i] = (char *) "--shared";
	182
d4e5e3c3 DM	183	while (1)
	184	{
	185	/* getopt_long_only is like getopt_long, but '-' as well as '--' can
	186	indicate a long option. */
d5b79a89 DM	187	int longind;
	188	int optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
	189
d4e5e3c3 DM	190	if (optc == -1)
	191	break;
	192
	193	switch (optc)
	194	{
	195	default:
	196	xexit (1);
	197	case 1: /* File name. */
	198	lang_add_input_file (optarg, lang_input_file_is_file_enum,
	199	(char *) NULL);
	200	break;
	201
2a9fa50c ILT	202	case OPTION_IGNORE:
2a9fa50c ILT	203	break;
de71eb77 SC	204	case 'a':
	205	/* For HP/UX compatibility. Actually -a shared should mean
	206	``use only shared libraries'' but, then, we don't
	207	currently support shared libraries on HP/UX anyhow. */
	208	if (strcmp (optarg, "archive") == 0)
	209	config.dynamic_link = false;
	210	else if (strcmp (optarg, "shared") == 0
	211	\|\| strcmp (optarg, "default") == 0)
	212	config.dynamic_link = true;
	213	else
	214	einfo ("%P%F: unrecognized -a option `%s'\n", optarg);
	215	break;
d4e5e3c3 DM	216	case 'A':
	217	ldfile_add_arch (optarg);
	218	break;
d4e5e3c3 DM	219	case 'b':
	220	lang_add_target (optarg);
	221	break;
	222	case 'c':
	223	ldfile_open_command_file (optarg);
	224	parser_input = input_mri_script;
	225	yyparse ();
	226	break;
d5b79a89	227	case OPTION_CALL_SHARED:
2a9fa50c ILT	228	config.dynamic_link = true;
	229	break;
	230	case OPTION_NON_SHARED:
	231	config.dynamic_link = false;
d4e5e3c3 DM	232	break;
	233	case 'd':
	234	command_line.force_common_definition = true;
	235	break;
d5b79a89	236	case OPTION_DEFSYM:
d4e5e3c3 DM	237	lex_redirect (optarg);
	238	parser_input = input_defsym;
	239	yyparse ();
	240	break;
7fb9ca5f ILT	241	case OPTION_DYNAMIC_LINKER:
	242	command_line.interpreter = optarg;
	243	break;
d5b79a89	244	case OPTION_EB:
86037281	245	command_line.endian = ENDIAN_BIG;
d4e5e3c3	246	break;
d5b79a89	247	case OPTION_EL:
86037281	248	command_line.endian = ENDIAN_LITTLE;
d4e5e3c3	249	break;
de71eb77 SC	250	case OPTION_EMBEDDED_RELOCS:
	251	command_line.embedded_relocs = true;
	252	break;
	253	case OPTION_EXPORT_DYNAMIC:
	254	command_line.export_dynamic = true;
	255	break;
d4e5e3c3	256	case 'e':
60e8a534	257	lang_add_entry (optarg, 1);
d4e5e3c3 DM	258	break;
	259	case 'F':
	260	/* Ignore. */
	261	break;
	262	case 'G':
	263	{
	264	char *end;
	265	g_switch_value = strtoul (optarg, &end, 0);
	266	if (*end)
9d3898b2	267	einfo ("%P%F: invalid number `%s'\n", optarg);
d4e5e3c3 DM	268	}
	269	break;
	270	case 'g':
	271	/* Ignore. */
	272	break;
de71eb77 SC	273	case OPTION_HEAP: /* WINDOWS_NT */
	274	link_info.stack_heap_parameters.heap_defined = true;
	275	set_stack_heap (optarg, true);
	276	break;
d5b79a89	277	case OPTION_HELP:
d4e5e3c3 DM	278	help ();
	279	xexit (0);
	280	break;
	281	case 'L':
0cd82d00	282	ldfile_add_library_path (optarg, true);
d4e5e3c3 DM	283	break;
	284	case 'l':
	285	lang_add_input_file (optarg, lang_input_file_is_l_enum,
	286	(char *) NULL);
	287	break;
	288	case 'M':
	289	config.map_filename = "-";
	290	break;
	291	case 'm':
	292	/* Ignore. Was handled in a pre-parse. */
	293	break;
d5b79a89	294	case OPTION_MAP:
d4e5e3c3 DM	295	config.map_filename = optarg;
	296	break;
	297	case 'N':
	298	config.text_read_only = false;
	299	config.magic_demand_paged = false;
	300	break;
	301	case 'n':
	302	config.magic_demand_paged = false;
	303	break;
d5b79a89	304	case OPTION_NO_KEEP_MEMORY:
d4e5e3c3 DM	305	link_info.keep_memory = false;
d4e5e3c3 DM	306	break;
d5b79a89	307	case OPTION_NOINHIBIT_EXEC:
d4e5e3c3 DM	308	force_make_executable = true;
	309	break;
	310	case 'O':
	311	/* FIXME "-O<non-digits> <value>" used to set the address of
	312	section <non-digits>. Was this for compatibility with
	313	something, or can we create a new option to do that
	314	(with a syntax similar to -defsym)?
	315	getopt can't handle two args to an option without kludges. */
	316	set_default_dirlist (optarg);
	317	break;
	318	case 'o':
	319	lang_add_output (optarg, 0);
	320	break;
d5b79a89	321	case OPTION_OFORMAT:
86037281	322	lang_add_output_format (optarg, (char ) NULL, (char ) NULL, 0);
d4e5e3c3	323	break;
3e1fd33d	324	case 'i':
d4e5e3c3 DM	325	case 'r':
	326	link_info.relocateable = true;
	327	config.build_constructors = false;
	328	config.magic_demand_paged = false;
	329	config.text_read_only = false;
2a9fa50c	330	config.dynamic_link = false;
d4e5e3c3 DM	331	break;
d4e5e3c3 DM	332	case 'R':
809ee7e0 ILT	333	/* The GNU linker traditionally uses -R to mean to include
	334	only the symbols from a file. The Solaris linker uses -R
	335	to set the path used by the runtime linker to find
	336	libraries. This is the GNU linker -rpath argument. We
	337	try to support both simultaneously by checking the file
	338	named. If it is a directory, rather than a regular file,
	339	we assume -rpath was meant. */
	340	{
	341	struct stat s;
	342
	343	if (stat (optarg, &s) >= 0
	344	&& ! S_ISDIR (s.st_mode))
	345	{
	346	lang_add_input_file (optarg,
	347	lang_input_file_is_symbols_only_enum,
	348	(char *) NULL);
	349	break;
	350	}
	351	}
	352	/* Fall through. */
	353	case OPTION_RPATH:
	354	if (command_line.rpath == NULL)
	355	command_line.rpath = buystring (optarg);
	356	else
	357	{
	358	char *buf;
	359
	360	buf = xmalloc (strlen (command_line.rpath)
	361	+ strlen (optarg)
	362	+ 2);
	363	sprintf (buf, "%s:%s", command_line.rpath, optarg);
	364	free (command_line.rpath);
	365	command_line.rpath = buf;
	366	}
d4e5e3c3	367	break;
d5b79a89	368	case OPTION_RELAX:
d4e5e3c3 DM	369	command_line.relax = true;
d4e5e3c3 DM	370	break;
d5b79a89	371	case OPTION_RETAIN_SYMBOLS_FILE:
d4e5e3c3 DM	372	add_keepsyms_file (optarg);
	373	break;
	374	case 'S':
	375	link_info.strip = strip_debugger;
	376	break;
	377	case 's':
	378	link_info.strip = strip_all;
	379	break;
db770dfa ILT	380	case OPTION_SHARED:
	381	link_info.shared = true;
	382	break;
809ee7e0 ILT	383	case OPTION_SONAME:
	384	command_line.soname = optarg;
	385	break;
d5b79a89	386	case OPTION_SORT_COMMON:
d4e5e3c3 DM	387	config.sort_common = true;
d4e5e3c3 DM	388	break;
de71eb77 SC	389	case OPTION_STACK: /* WINDOWS_NT */
	390	link_info.stack_heap_parameters.stack_defined = true;
	391	set_stack_heap (optarg, false);
	392	break;
d5b79a89	393	case OPTION_STATS:
d4e5e3c3 DM	394	config.stats = true;
d4e5e3c3 DM	395	break;
de71eb77 SC	396	case OPTION_SUBSYSTEM: /* WINDOWS_NT */
	397	set_subsystem (optarg);
	398	break;
4551e108 ILT	399	case OPTION_SYMBOLIC:
	400	link_info.symbolic = true;
	401	break;
d4e5e3c3 DM	402	case 't':
	403	trace_files = true;
	404	break;
	405	case 'T':
	406	ldfile_open_command_file (optarg);
	407	parser_input = input_script;
	408	yyparse ();
	409	break;
d5b79a89	410	case OPTION_TBSS:
d4e5e3c3 DM	411	set_section_start (".bss", optarg);
d4e5e3c3 DM	412	break;
d5b79a89	413	case OPTION_TDATA:
d4e5e3c3 DM	414	set_section_start (".data", optarg);
d4e5e3c3 DM	415	break;
d5b79a89	416	case OPTION_TTEXT:
d4e5e3c3 DM	417	set_section_start (".text", optarg);
d4e5e3c3 DM	418	break;
c96386c4 ILT	419	case OPTION_TRADITIONAL_FORMAT:
	420	config.traditional_format = true;
	421	break;
d5b79a89	422	case OPTION_UR:
d4e5e3c3 DM	423	link_info.relocateable = true;
	424	config.build_constructors = true;
	425	config.magic_demand_paged = false;
	426	config.text_read_only = false;
2a9fa50c	427	config.dynamic_link = false;
d4e5e3c3 DM	428	break;
	429	case 'u':
	430	ldlang_add_undef (optarg);
	431	break;
de71eb77	432	case OPTION_VERBOSE:
d4e5e3c3 DM	433	ldversion (1);
	434	version_printed = true;
	435	trace_file_tries = true;
	436	break;
	437	case 'v':
	438	ldversion (0);
	439	version_printed = true;
	440	break;
de71eb77 SC	441	case 'V':
	442	ldversion (1);
	443	version_printed = true;
	444	break;
d5b79a89	445	case OPTION_VERSION:
d4e5e3c3 DM	446	ldversion (0);
	447	version_printed = true;
	448	break;
d5b79a89	449	case OPTION_WARN_COMMON:
d4e5e3c3 DM	450	config.warn_common = true;
d4e5e3c3 DM	451	break;
809ee7e0 ILT	452	case OPTION_WARN_ONCE:
	453	config.warn_once = true;
	454	break;
de71eb77 SC	455	case OPTION_WHOLE_ARCHIVE:
	456	whole_archive = true;
	457	break;
	458	case OPTION_BASE_FILE:
243e7698 ILT	459	link_info.base_file = (PTR) fopen (optarg,"w");
	460	if (link_info.base_file == NULL)
	461	{
	462	fprintf (stderr, "%s: Can't open base file %s\n",
	463	program_name, optarg);
	464	xexit (1);
	465	}
de71eb77	466	break;
d4e5e3c3 DM	467	case 'X':
	468	link_info.discard = discard_l;
	469	break;
	470	case 'x':
	471	link_info.discard = discard_all;
	472	break;
d5b79a89 DM	473	case 'Y':
	474	set_default_dirlist (optarg);
	475	break;
d4e5e3c3 DM	476	case 'y':
	477	add_ysym (optarg);
	478	break;
22d3533c ILT	479	case 'z':
	480	/* We accept and ignore this option for Solaris
	481	compatibility. Actually, on Solaris, optarg is not
	482	ignored. Someday we should handle it correctly. FIXME. */
	483	break;
de71eb77 SC	484	case OPTION_SPLIT_BY_RELOC:
	485	config.split_by_reloc = atoi (optarg);
	486	break;
	487	case OPTION_SPLIT_BY_FILE:
	488	config.split_by_file = true;
	489	break;
db770dfa ILT	490	case '(':
	491	if (ingroup)
	492	{
	493	fprintf (stderr,
	494	"%s: may not nest groups (--help for usage)\n",
	495	program_name);
	496	xexit (1);
	497	}
	498	lang_enter_group ();
	499	ingroup = 1;
	500	break;
	501	case ')':
	502	if (! ingroup)
	503	{
	504	fprintf (stderr,
	505	"%s: group ended before it began (--help for usage)\n",
	506	program_name);
	507	xexit (1);
	508	}
	509	lang_leave_group ();
	510	ingroup = 0;
	511	break;
d4e5e3c3 DM	512	}
d4e5e3c3 DM	513	}
db770dfa ILT	514
	515	if (ingroup)
	516	lang_leave_group ();
d4e5e3c3 DM	517	}
	518
	519	/* Add the (colon-separated) elements of DIRLIST_PTR to the
	520	library search path. */
	521
	522	static void
	523	set_default_dirlist (dirlist_ptr)
	524	char *dirlist_ptr;
	525	{
	526	char *p;
	527
	528	while (1)
	529	{
	530	p = strchr (dirlist_ptr, ':');
	531	if (p != NULL)
	532	*p = 0;
	533	if (*dirlist_ptr)
0cd82d00	534	ldfile_add_library_path (dirlist_ptr, true);
d4e5e3c3 DM	535	if (p == NULL)
	536	break;
	537	*p = ':';
	538	dirlist_ptr = p + 1;
	539	}
	540	}
	541
	542	static void
	543	set_section_start (sect, valstr)
	544	char sect, valstr;
	545	{
	546	char *end;
	547	unsigned long val = strtoul (valstr, &end, 16);
	548	if (*end)
d5b79a89	549	einfo ("%P%F: invalid hex number `%s'\n", valstr);
d4e5e3c3 DM	550	lang_section_start (sect, exp_intop (val));
d4e5e3c3 DM	551	}
de71eb77 SC	552
	553	/* WINDOWS_NT; added routines to get the subsystem type, heap and/or stack
	554	parameters which may be input from the command line */
	555	static void
	556	set_subsystem (subsystem_type)
	557	char *subsystem_type;
	558	{
	559	if (strcmp (subsystem_type, "native") == 0)
	560	{
	561	link_info.subsystem = native;
	562	}
	563	else if (strcmp (subsystem_type, "windows") == 0)
	564	{
	565	link_info.subsystem = windows;
	566	}
	567	else if (strcmp (subsystem_type, "console") == 0)
	568	{
	569	link_info.subsystem = console;
	570	}
	571	else if (strcmp (subsystem_type, "os2") == 0)
	572	{
	573	link_info.subsystem = os2;
	574	}
	575	else if (strcmp (subsystem_type, "posix") == 0)
	576	{
	577	link_info.subsystem = posix;
	578	}
	579	else
	580	einfo ("%P%F: invalid subsystem type `%s'\n", subsystem_type);
	581
	582	}
	583
	584	static void
	585	set_stack_heap (valstr, for_heap)
	586	char *valstr;
	587	boolean for_heap;
	588	{
	589	char begin_commit, end;
	590	bfd_vma reserve = 0;
	591	bfd_vma commit = 0;
	592
	593	/* There may be two values passed in to the -stack or -heap switches like
	594	this:
	595	-stack 0x10000,0x100
	596	where the first parameter is the stack (or heap) reserve and the second
	597	is commit. The second parameter is optional. */
	598
	599	/* get the reserve value */
	600	reserve = strtoul (valstr, &begin_commit, 16);
	601
	602	if (strcmp (valstr, begin_commit) == 0)
	603	/* the reserve value couldn't be read */
	604	einfo ("%P%F: invalid hex number for reserve[,commit] '%s'\n", valstr);
	605	else if (strcmp (begin_commit, "\0") != 0) /* check for a commit value */
	606	{
	607	begin_commit += 1; /* increment begin_commit to point past ',' */
	608	commit = strtoul (begin_commit, &end, 16);
	609	if (strcmp (end, begin_commit) == 0)
	610	einfo ("%P%F: invalid hex number for commit '%s'\n", begin_commit);
	611	}
	612
	613	if (for_heap)
	614	{
	615	link_info.stack_heap_parameters.heap_reserve = reserve;
616	link_info.stack_heap_parameters.heap_commit = commit;
617	}
618	else
619	{
620	link_info.stack_heap_parameters.stack_reserve = reserve;
621	link_info.stack_heap_parameters.stack_commit = commit;
622	}
623
624	#if DUMP_INFO
625	printf ("reserve = %8x commit = %8x\n", reserve, commit);
626	#endif
627	}