/* as.c - GAS main program.
- Copyright (C) 1987, 1990, 1991 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001
+ Free Software Foundation, Inc.
-This file is part of GAS, the GNU Assembler.
+ This file is part of GAS, the GNU Assembler.
-GAS 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 1, or (at your option)
-any later version.
+ GAS 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.
-GAS 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.
+ GAS 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 GAS; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with GAS; see the file COPYING. If not, write to the Free
+ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+ 02111-1307, USA. */
-/* static const char rcsid[] = "$Id$"; */
-
-/*
- * Main program for AS; a 32-bit assembler of GNU.
+/* Main program for AS; a 32-bit assembler of GNU.
* Understands command arguments.
* Has a few routines that don't fit in other modules because they
* are shared.
*
- *
* bugs
*
* : initialisers
* Since no-one else says they will support them in future: I
* don't support them now.
- *
*/
-#include <stdio.h>
-#include <string.h>
-
-#ifdef _POSIX_SOURCE
-#include <sys/types.h> /* For pid_t in signal.h */
-#endif
-#include <signal.h>
+#include "ansidecl.h"
#define COMMON
#include "as.h"
+#include "subsegs.h"
+#include "output-file.h"
+#include "sb.h"
+#include "macro.h"
+#include "dwarf2dbg.h"
-#ifdef __STDC__
+#ifdef HAVE_ITBL_CPU
+#include "itbl-ops.h"
+#else
+#define itbl_parse(itbl_file) 1
+#define itbl_init()
+#endif
- /* This prototype for got_sig() is ansi. If you want
- anything else, then your compiler is lying to you when
- it says that it is __STDC__. If you want to change it,
- #ifdef protect it from those of us with real ansi
- compilers. */
+#ifdef HAVE_SBRK
+#ifdef NEED_DECLARATION_SBRK
+extern PTR sbrk ();
+#endif
+#endif
-#define SIGTY void
+static void show_usage PARAMS ((FILE *));
+static void parse_args PARAMS ((int *, char ***));
+static void dump_statistics PARAMS ((void));
+static void perform_an_assembly_pass PARAMS ((int argc, char **argv));
+static int macro_expr PARAMS ((const char *, int, sb *, int *));
-static void got_sig(int sig);
-static char *stralloc(char *str);
-static void perform_an_assembly_pass(int argc, char **argv);
+/* True if a listing is wanted. */
+int listing;
-#else /* __STDC__ */
+/* Name of listing file. */
+static char *listing_filename = NULL;
-#ifndef SIGTY
-#define SIGTY int
-#endif
+/* Type of debugging to generate. */
-static SIGTY got_sig();
-static char *stralloc(); /* Make a (safe) copy of a string. */
-static void perform_an_assembly_pass();
+enum debug_info_type debug_type = DEBUG_UNSPECIFIED;
-#endif /* __STDC__ */
+/* Maximum level of macro nesting. */
+int max_macro_nest = 100;
-#ifdef DONTDEF
-static char * gdb_symbol_file_name;
-long gdb_begin();
+/* argv[0] */
+char *myname;
+#ifdef BFD_ASSEMBLER
+segT reg_section, expr_section;
+segT text_section, data_section, bss_section;
#endif
-char *myname; /* argv[0] */
-extern char version_string[];
+/* The default obstack chunk size. If we set this to zero, the
+ obstack code will use whatever will fit in a 4096 byte block. */
+int chunksize = 0;
+
+/* To monitor memory allocation more effectively, make this non-zero.
+ Then the chunk sizes for gas and bfd will be reduced. */
+int debug_memory = 0;
+
+/* We build a list of defsyms as we read the options, and then define
+ them after we have initialized everything. */
+
+struct defsym_list {
+ struct defsym_list *next;
+ char *name;
+ valueT value;
+};
+
+static struct defsym_list *defsyms;
+
+/* Keep a record of the itbl files we read in. */
+
+struct itbl_file_list {
+ struct itbl_file_list *next;
+ char *name;
+};
+
+static struct itbl_file_list *itbl_files;
\f
-int main(argc,argv)
-int argc;
-char **argv;
+#ifdef USE_EMULATIONS
+#define EMULATION_ENVIRON "AS_EMULATION"
+
+extern struct emulation mipsbelf, mipslelf, mipself;
+extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
+extern struct emulation i386coff, i386elf, i386aout;
+extern struct emulation crisaout, criself;
+
+static struct emulation *const emulations[] = { EMULATIONS };
+static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
+
+static void select_emulation_mode PARAMS ((int, char **));
+
+static void
+select_emulation_mode (argc, argv)
+ int argc;
+ char **argv;
{
- int work_argc; /* variable copy of argc */
- char **work_argv; /* variable copy of argv */
- char *arg; /* an arg to program */
- char a; /* an arg flag (after -) */
- static const int sig[] = { SIGHUP, SIGINT, SIGPIPE, SIGTERM, 0};
-
- for(a=0;sig[a]!=0;a++)
- if(signal(sig[a], SIG_IGN) != SIG_IGN)
- signal(sig[a], got_sig);
-
- myname=argv[0];
- bzero (flagseen, sizeof(flagseen)); /* aint seen nothing yet */
-#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
-#define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
-#endif /* OBJ_DEFAULT_OUTPUT_FILE_NAME */
- out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
-
- symbol_begin(); /* symbols.c */
- subsegs_begin(); /* subsegs.c */
- read_begin(); /* read.c */
- md_begin(); /* MACHINE.c */
- input_scrub_begin(); /* input_scrub.c */
-#ifdef DONTDEF
- gdb_symbol_file_name = 0;
-#endif
- /*
- * Parse arguments, but we are only interested in flags.
- * When we find a flag, we process it then make it's argv[] NULL.
- * This helps any future argv[] scanners avoid what we processed.
- * Since it is easy to do here we interpret the special arg "-"
- * to mean "use stdin" and we set that argv[] pointing to "".
- * After we have munged argv[], the only things left are source file
- * name(s) and ""(s) denoting stdin. These file names are used
- * (perhaps more than once) later.
- */
- /* FIXME-SOMEDAY this should use getopt. */
- work_argc = argc-1; /* don't count argv[0] */
- work_argv = argv+1; /* skip argv[0] */
- for (;work_argc--;work_argv++) {
- arg = * work_argv; /* work_argv points to this argument */
-
- if (*arg!='-') /* Filename. We need it later. */
- continue; /* Keep scanning args looking for flags. */
- if (arg[1] == '-' && arg[2] == 0) {
- /* "--" as an argument means read STDIN */
- /* on this scan, we don't want to think about filenames */
- * work_argv = ""; /* Code that means 'use stdin'. */
- continue;
- }
- /* This better be a switch. */
- arg ++; /*->letter. */
-
- while ((a = * arg) != '\0') {/* scan all the 1-char flags */
- arg ++; /* arg->after letter. */
- a &= 0x7F; /* ascii only please */
- if (flagseen[a])
- as_tsktsk("%s: Flag option - %c has already been seen.", myname, a);
- flagseen[a] = 1;
- switch (a) {
- case 'f':
- break; /* -f means fast - no need for "app" preprocessor. */
-
- case 'D':
- /* DEBUG is implemented: it debugs different */
- /* things to other people's assemblers. */
- break;
-
-#ifdef DONTDEF
- case 'G': /* GNU AS switch: include gdbsyms. */
- if (*arg) /* Rest of argument is file-name. */
- gdb_symbol_file_name = stralloc (arg);
- else if (work_argc) { /* Next argument is file-name. */
- work_argc --;
- * work_argv = NULL; /* Not a source file-name. */
- gdb_symbol_file_name = * ++ work_argv;
- } else
- as_warn("%s: I expected a filename after -G", myname);
- arg = ""; /* Finished with this arg. */
- break;
-#endif
-
- case 'I': { /* Include file directory */
-
- char *temp;
- if (*arg)
- temp = stralloc (arg);
- else if (work_argc) {
- * work_argv = NULL;
- work_argc--;
- temp = * ++ work_argv;
- } else
- as_warn("%s: I expected a filename after -I", myname);
- add_include_dir (temp);
- arg = ""; /* Finished with this arg. */
- break;
- }
+ int i;
+ char *p, *em = 0;
+
+ for (i = 1; i < argc; i++)
+ if (!strncmp ("--em", argv[i], 4))
+ break;
+
+ if (i == argc)
+ goto do_default;
+
+ p = strchr (argv[i], '=');
+ if (p)
+ p++;
+ else
+ p = argv[i + 1];
+
+ if (!p || !*p)
+ as_fatal (_("missing emulation mode name"));
+ em = p;
+
+ do_default:
+ if (em == 0)
+ em = getenv (EMULATION_ENVIRON);
+ if (em == 0)
+ em = DEFAULT_EMULATION;
+
+ if (em)
+ {
+ for (i = 0; i < n_emulations; i++)
+ if (!strcmp (emulations[i]->name, em))
+ break;
+ if (i == n_emulations)
+ as_fatal (_("unrecognized emulation name `%s'"), em);
+ this_emulation = emulations[i];
+ }
+ else
+ this_emulation = emulations[0];
+
+ this_emulation->init ();
+}
+
+const char *
+default_emul_bfd_name ()
+{
+ abort ();
+ return NULL;
+}
+
+void
+common_emul_init ()
+{
+ this_format = this_emulation->format;
+
+ if (this_emulation->leading_underscore == 2)
+ this_emulation->leading_underscore = this_format->dfl_leading_underscore;
+
+ if (this_emulation->default_endian != 2)
+ target_big_endian = this_emulation->default_endian;
+
+ if (this_emulation->fake_label_name == 0)
+ {
+ if (this_emulation->leading_underscore)
+ this_emulation->fake_label_name = "L0\001";
+ else
+ /* What other parameters should we test? */
+ this_emulation->fake_label_name = ".L0\001";
+ }
+}
+#endif
+
+void
+print_version_id ()
+{
+ static int printed;
+ if (printed)
+ return;
+ printed = 1;
+
+#ifdef BFD_ASSEMBLER
+ fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"),
+ VERSION, TARGET_ALIAS, BFD_VERSION);
+#else
+ fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS);
+#endif
+ fprintf (stderr, "\n");
+}
+
+static void
+show_usage (stream)
+ FILE *stream;
+{
+ fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
+
+ fprintf (stream, _("\
+Options:\n\
+ -a[sub-option...] turn on listings\n\
+ Sub-options [default hls]:\n\
+ c omit false conditionals\n\
+ d omit debugging directives\n\
+ h include high-level source\n\
+ l include assembly\n\
+ m include macro expansions\n\
+ n omit forms processing\n\
+ s include symbols\n\
+ L include line debug statistics (if applicable)\n\
+ =FILE list to FILE (must be last sub-option)\n"));
+
+ fprintf (stream, _("\
+ -D produce assembler debugging messages\n"));
+ fprintf (stream, _("\
+ --defsym SYM=VAL define symbol SYM to given value\n"));
+#ifdef USE_EMULATIONS
+ {
+ int i;
+ char *def_em;
+
+ fprintf (stream, "\
+ --em=[");
+ for (i = 0; i < n_emulations - 1; i++)
+ fprintf (stream, "%s | ", emulations[i]->name);
+ fprintf (stream, "%s]\n", emulations[i]->name);
+
+ def_em = getenv (EMULATION_ENVIRON);
+ if (!def_em)
+ def_em = DEFAULT_EMULATION;
+ fprintf (stream, _("\
+ emulate output (default %s)\n"), def_em);
+ }
+#endif
+ fprintf (stream, _("\
+ -f skip whitespace and comment preprocessing\n"));
+ fprintf (stream, _("\
+ --gstabs generate stabs debugging information\n"));
+ fprintf (stream, _("\
+ --gdwarf2 generate DWARF2 debugging information\n"));
+ fprintf (stream, _("\
+ --help show this message and exit\n"));
+ fprintf (stream, _("\
+ --target-help show target specific options\n"));
+ fprintf (stream, _("\
+ -I DIR add DIR to search list for .include directives\n"));
+ fprintf (stream, _("\
+ -J don't warn about signed overflow\n"));
+ fprintf (stream, _("\
+ -K warn when differences altered for long displacements\n"));
+ fprintf (stream, _("\
+ -L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
+ fprintf (stream, _("\
+ -M,--mri assemble in MRI compatibility mode\n"));
+ fprintf (stream, _("\
+ --MD FILE write dependency information in FILE (default none)\n"));
+ fprintf (stream, _("\
+ -nocpp ignored\n"));
+ fprintf (stream, _("\
+ -o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
+ fprintf (stream, _("\
+ -R fold data section into text section\n"));
+ fprintf (stream, _("\
+ --statistics print various measured statistics from execution\n"));
+ fprintf (stream, _("\
+ --strip-local-absolute strip local absolute symbols\n"));
+ fprintf (stream, _("\
+ --traditional-format Use same format as native assembler when possible\n"));
+ fprintf (stream, _("\
+ --version print assembler version number and exit\n"));
+ fprintf (stream, _("\
+ -W --no-warn suppress warnings\n"));
+ fprintf (stream, _("\
+ --warn don't suppress warnings\n"));
+ fprintf (stream, _("\
+ --fatal-warnings treat warnings as errors\n"));
+ fprintf (stream, _("\
+ --itbl INSTTBL extend instruction set to include instructions\n\
+ matching the specifications defined in file INSTTBL\n"));
+ fprintf (stream, _("\
+ -w ignored\n"));
+ fprintf (stream, _("\
+ -X ignored\n"));
+ fprintf (stream, _("\
+ -Z generate object file even after errors\n"));
+ fprintf (stream, _("\
+ --listing-lhs-width set the width in words of the output data column of\n\
+ the listing\n"));
+ fprintf (stream, _("\
+ --listing-lhs-width2 set the width in words of the continuation lines\n\
+ of the output data column; ignored if smaller than\n\
+ the width of the first line\n"));
+ fprintf (stream, _("\
+ --listing-rhs-width set the max width in characters of the lines from\n\
+ the source file\n"));
+ fprintf (stream, _("\
+ --listing-cont-lines set the maximum number of continuation lines used\n\
+ for the output data column of the listing\n"));
+
+ md_show_usage (stream);
+
+ fputc ('\n', stream);
+ fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
+}
+
+/* Since it is easy to do here we interpret the special arg "-"
+ to mean "use stdin" and we set that argv[] pointing to "".
+ After we have munged argv[], the only things left are source file
+ name(s) and ""(s) denoting stdin. These file names are used
+ (perhaps more than once) later.
+
+ check for new machine-dep cmdline options in
+ md_parse_option definitions in config/tc-*.c. */
+
+static void
+parse_args (pargc, pargv)
+ int *pargc;
+ char ***pargv;
+{
+ int old_argc, new_argc;
+ char **old_argv, **new_argv;
+
+ /* 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. */
+
+ char *shortopts;
+ extern CONST char *md_shortopts;
+ static const char std_shortopts[] = {
+ '-', 'J',
+#ifndef WORKING_DOT_WORD
+ /* -K is not meaningful if .word is not being hacked. */
+ 'K',
+#endif
+ 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':',
+#ifndef VMS
+ /* -v takes an argument on VMS, so we don't make it a generic
+ option. */
+ 'v',
+#endif
+ 'w', 'X',
+ /* New option for extending instruction set (see also --itbl below) */
+ 't', ':',
+ '\0'
+ };
+ struct option *longopts;
+ extern struct option md_longopts[];
+ extern size_t md_longopts_size;
+ static const struct option std_longopts[] = {
+#define OPTION_HELP (OPTION_STD_BASE)
+ {"help", no_argument, NULL, OPTION_HELP},
+ {"keep-locals", no_argument, NULL, 'L'},
+ {"mri", no_argument, NULL, 'M'},
+#define OPTION_NOCPP (OPTION_STD_BASE + 1)
+ {"nocpp", no_argument, NULL, OPTION_NOCPP},
+#define OPTION_STATISTICS (OPTION_STD_BASE + 2)
+ {"statistics", no_argument, NULL, OPTION_STATISTICS},
+#define OPTION_VERSION (OPTION_STD_BASE + 3)
+ {"version", no_argument, NULL, OPTION_VERSION},
+#define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
+ {"dump-config", no_argument, NULL, OPTION_DUMPCONFIG},
+#define OPTION_VERBOSE (OPTION_STD_BASE + 5)
+ {"verbose", no_argument, NULL, OPTION_VERBOSE},
+#define OPTION_EMULATION (OPTION_STD_BASE + 6)
+ {"emulation", required_argument, NULL, OPTION_EMULATION},
+#define OPTION_DEFSYM (OPTION_STD_BASE + 7)
+ {"defsym", required_argument, NULL, OPTION_DEFSYM},
+#define OPTION_INSTTBL (OPTION_STD_BASE + 8)
+ /* New option for extending instruction set (see also -t above).
+ The "-t file" or "--itbl file" option extends the basic set of
+ valid instructions by reading "file", a text file containing a
+ list of instruction formats. The additional opcodes and their
+ formats are added to the built-in set of instructions, and
+ mnemonics for new registers may also be defined. */
+ {"itbl", required_argument, NULL, OPTION_INSTTBL},
+#define OPTION_LISTING_LHS_WIDTH (OPTION_STD_BASE + 9)
+ {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH},
+#define OPTION_LISTING_LHS_WIDTH2 (OPTION_STD_BASE + 10)
+ {"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2},
+#define OPTION_LISTING_RHS_WIDTH (OPTION_STD_BASE + 11)
+ {"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH},
+#define OPTION_LISTING_CONT_LINES (OPTION_STD_BASE + 12)
+ {"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES},
+#define OPTION_DEPFILE (OPTION_STD_BASE + 13)
+ {"MD", required_argument, NULL, OPTION_DEPFILE},
+#define OPTION_GSTABS (OPTION_STD_BASE + 14)
+ {"gstabs", no_argument, NULL, OPTION_GSTABS},
+#define OPTION_STRIP_LOCAL_ABSOLUTE (OPTION_STD_BASE + 15)
+ {"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE},
+#define OPTION_TRADITIONAL_FORMAT (OPTION_STD_BASE + 16)
+ {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
+#define OPTION_GDWARF2 (OPTION_STD_BASE + 17)
+ {"gdwarf2", no_argument, NULL, OPTION_GDWARF2},
+ {"no-warn", no_argument, NULL, 'W'},
+#define OPTION_WARN (OPTION_STD_BASE + 18)
+ {"warn", no_argument, NULL, OPTION_WARN},
+#define OPTION_TARGET_HELP (OPTION_STD_BASE + 19)
+ {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
+#define OPTION_WARN_FATAL (OPTION_STD_BASE + 20)
+ {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
+ /* When you add options here, check that they do not collide with
+ OPTION_MD_BASE. See as.h. */
+ };
+
+ /* Construct the option lists from the standard list and the target
+ dependent list. Include space for an extra NULL option and
+ always NULL terminate. */
+ shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
+ longopts = (struct option *) xmalloc (sizeof (std_longopts)
+ + md_longopts_size
+ + sizeof (struct option));
+ memcpy (longopts, std_longopts, sizeof (std_longopts));
+ memcpy ((char *) longopts + sizeof (std_longopts),
+ md_longopts, md_longopts_size);
+ memset ((char *) longopts + sizeof (std_longopts) + md_longopts_size,
+ 0, sizeof (struct option));
+
+ /* Make a local copy of the old argv. */
+ old_argc = *pargc;
+ old_argv = *pargv;
+
+ /* Initialize a new argv that contains no options. */
+ new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1));
+ new_argv[0] = old_argv[0];
+ new_argc = 1;
+ new_argv[new_argc] = NULL;
+
+ 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 (old_argc, old_argv, shortopts, longopts,
+ &longind);
+
+ if (optc == -1)
+ break;
+
+ switch (optc)
+ {
+ default:
+ /* md_parse_option should return 1 if it recognizes optc,
+ 0 if not. */
+ if (md_parse_option (optc, optarg) != 0)
+ break;
+ /* `-v' isn't included in the general short_opts list, so check for
+ it explicity here before deciding we've gotten a bad argument. */
+ if (optc == 'v')
+ {
+#ifdef VMS
+ /* Telling getopt to treat -v's value as optional can result
+ in it picking up a following filename argument here. The
+ VMS code in md_parse_option can return 0 in that case,
+ but it has no way of pushing the filename argument back. */
+ if (optarg && *optarg)
+ new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL;
+ else
+#else
+ case 'v':
+#endif
+ case OPTION_VERBOSE:
+ print_version_id ();
+ break;
+ }
+ /* Fall through. */
+
+ case '?':
+ exit (EXIT_FAILURE);
+
+ case 1: /* File name. */
+ if (!strcmp (optarg, "-"))
+ optarg = "";
+ new_argv[new_argc++] = optarg;
+ new_argv[new_argc] = NULL;
+ break;
+
+ case OPTION_TARGET_HELP:
+ md_show_usage (stdout);
+ exit (EXIT_SUCCESS);
+
+ case OPTION_HELP:
+ show_usage (stdout);
+ exit (EXIT_SUCCESS);
+
+ case OPTION_NOCPP:
+ break;
+
+ case OPTION_STATISTICS:
+ flag_print_statistics = 1;
+ break;
+
+ case OPTION_STRIP_LOCAL_ABSOLUTE:
+ flag_strip_local_absolute = 1;
+ break;
+
+ case OPTION_TRADITIONAL_FORMAT:
+ flag_traditional_format = 1;
+ break;
+
+ case OPTION_VERSION:
+ /* This output is intended to follow the GNU standards document. */
+ printf (_("GNU assembler %s\n"), VERSION);
+ printf (_("Copyright 2001 Free Software Foundation, Inc.\n"));
+ printf (_("\
+This program is free software; you may redistribute it under the terms of\n\
+the GNU General Public License. This program has absolutely no warranty.\n"));
+ printf (_("This assembler was configured for a target of `%s'.\n"),
+ TARGET_ALIAS);
+ exit (EXIT_SUCCESS);
+
+ case OPTION_EMULATION:
+#ifdef USE_EMULATIONS
+ if (strcmp (optarg, this_emulation->name))
+ as_fatal (_("multiple emulation names specified"));
+#else
+ as_fatal (_("emulations not handled in this configuration"));
+#endif
+ break;
+
+ case OPTION_DUMPCONFIG:
+ fprintf (stderr, _("alias = %s\n"), TARGET_ALIAS);
+ fprintf (stderr, _("canonical = %s\n"), TARGET_CANONICAL);
+ fprintf (stderr, _("cpu-type = %s\n"), TARGET_CPU);
+#ifdef TARGET_OBJ_FORMAT
+ fprintf (stderr, _("format = %s\n"), TARGET_OBJ_FORMAT);
+#endif
+#ifdef TARGET_FORMAT
+ fprintf (stderr, _("bfd-target = %s\n"), TARGET_FORMAT);
+#endif
+ exit (EXIT_SUCCESS);
+
+ case OPTION_DEFSYM:
+ {
+ char *s;
+ valueT i;
+ struct defsym_list *n;
+
+ for (s = optarg; *s != '\0' && *s != '='; s++)
+ ;
+ if (*s == '\0')
+ as_fatal (_("bad defsym; format is --defsym name=value"));
+ *s++ = '\0';
+#ifdef BFD_ASSEMBLER
+ i = bfd_scan_vma (s, (const char **) NULL, 0);
+#else
+ i = strtol (s, (char **) NULL, 0);
+#endif
+ n = (struct defsym_list *) xmalloc (sizeof *n);
+ n->next = defsyms;
+ n->name = optarg;
+ n->value = i;
+ defsyms = n;
+ }
+ break;
+
+ case OPTION_INSTTBL:
+ case 't':
+ {
+ /* optarg is the name of the file containing the instruction
+ formats, opcodes, register names, etc. */
+ struct itbl_file_list *n;
+
+ if (optarg == NULL)
+ {
+ as_warn (_("No file name following -t option\n"));
+ break;
+ }
+
+ n = (struct itbl_file_list *) xmalloc (sizeof *n);
+ n->next = itbl_files;
+ n->name = optarg;
+ itbl_files = n;
+
+ /* Parse the file and add the new instructions to our internal
+ table. If multiple instruction tables are specified, the
+ information from this table gets appended onto the existing
+ internal table. */
+ itbl_files->name = xstrdup (optarg);
+ if (itbl_parse (itbl_files->name) != 0)
+ {
+ fprintf (stderr, _("Failed to read instruction table %s\n"),
+ itbl_files->name);
+ exit (EXIT_SUCCESS);
+ }
+ }
+ break;
+
+ case OPTION_DEPFILE:
+ start_dependencies (optarg);
+ break;
+
+ case OPTION_GSTABS:
+ debug_type = DEBUG_STABS;
+ break;
+
+ case OPTION_GDWARF2:
+ debug_type = DEBUG_DWARF2;
+ break;
+
+ case 'J':
+ flag_signed_overflow_ok = 1;
+ break;
#ifndef WORKING_DOT_WORD
- case 'k':
- break;
-#endif
-
- case 'L': /* -L means keep L* symbols */
- break;
-
- case 'o':
- if (*arg) /* Rest of argument is object file-name. */
- out_file_name = stralloc (arg);
- else if (work_argc) { /* Want next arg for a file-name. */
- * work_argv = NULL; /* This is not a file-name. */
- work_argc--;
- out_file_name = * ++ work_argv;
- } else
- as_warn("%s: I expected a filename after -o. \"%s\" assumed.", myname, out_file_name);
- arg = ""; /* Finished with this arg. */
- break;
-
- case 'R':
- /* -R means put data into text segment */
- break;
-
- case 'v':
-#ifdef VMS
- {
- extern char *compiler_version_string;
- compiler_version_string = arg;
- }
-#else /* not VMS */
- fprintf(stderr,version_string);
- if(*arg && strcmp(arg,"ersion"))
- as_warn("Unknown -v option ignored");
-#endif
- while(*arg) arg++; /* Skip the rest */
- break;
-
- case 'W':
- /* -W means don't warn about things */
- case 'X':
- /* -X means treat warnings as errors */
- case 'Z':
- /* -Z means attempt to generate object file even after errors. */
- break;
-
- default:
- --arg;
- if(md_parse_option(&arg,&work_argc,&work_argv)==0)
- as_warn("%s: I don't understand '%c' flag.", myname, a);
- if(arg && *arg)
- arg++;
- break;
- }
+ case 'K':
+ flag_warn_displacement = 1;
+ break;
+#endif
+
+ case 'L':
+ flag_keep_locals = 1;
+ break;
+
+ case OPTION_LISTING_LHS_WIDTH:
+ listing_lhs_width = atoi (optarg);
+ if (listing_lhs_width_second < listing_lhs_width)
+ listing_lhs_width_second = listing_lhs_width;
+ break;
+ case OPTION_LISTING_LHS_WIDTH2:
+ {
+ int tmp = atoi (optarg);
+ if (tmp > listing_lhs_width)
+ listing_lhs_width_second = tmp;
+ }
+ break;
+ case OPTION_LISTING_RHS_WIDTH:
+ listing_rhs_width = atoi (optarg);
+ break;
+ case OPTION_LISTING_CONT_LINES:
+ listing_lhs_cont_lines = atoi (optarg);
+ break;
+
+ case 'M':
+ flag_mri = 1;
+#ifdef TC_M68K
+ flag_m68k_mri = 1;
+#endif
+ break;
+
+ case 'R':
+ flag_readonly_data_in_text = 1;
+ break;
+
+ case 'W':
+ flag_no_warnings = 1;
+ break;
+
+ case OPTION_WARN:
+ flag_no_warnings = 0;
+ flag_fatal_warnings = 0;
+ break;
+
+ case OPTION_WARN_FATAL:
+ flag_no_warnings = 0;
+ flag_fatal_warnings = 1;
+ break;
+
+ case 'Z':
+ flag_always_generate_output = 1;
+ break;
+
+ case 'a':
+ if (optarg)
+ {
+ if (md_parse_option (optc, optarg) != 0)
+ break;
+
+ while (*optarg)
+ {
+ switch (*optarg)
+ {
+ case 'c':
+ listing |= LISTING_NOCOND;
+ break;
+ case 'd':
+ listing |= LISTING_NODEBUG;
+ break;
+ case 'h':
+ listing |= LISTING_HLL;
+ break;
+ case 'l':
+ listing |= LISTING_LISTING;
+ break;
+ case 'm':
+ listing |= LISTING_MACEXP;
+ break;
+ case 'n':
+ listing |= LISTING_NOFORM;
+ break;
+ case 's':
+ listing |= LISTING_SYMBOLS;
+ break;
+ case '=':
+ listing_filename = xstrdup (optarg + 1);
+ optarg += strlen (listing_filename);
+ break;
+ default:
+ as_fatal (_("invalid listing option `%c'"), *optarg);
+ break;
+ }
+ optarg++;
}
- /*
- * We have just processed a "-..." arg, which was not a
- * file-name. Smash it so the
- * things that look for filenames won't ever see it.
- *
- * Whatever work_argv points to, it has already been used
- * as part of a flag, so DON'T re-use it as a filename.
- */
- *work_argv = NULL; /* NULL means 'not a file-name' */
+ }
+ if (!listing)
+ listing = LISTING_DEFAULT;
+ break;
+
+ case 'D':
+ /* DEBUG is implemented: it debugs different
+ things from other people's assemblers. */
+ flag_debug = 1;
+ break;
+
+ case 'f':
+ flag_no_comments = 1;
+ break;
+
+ case 'I':
+ { /* Include file directory. */
+ char *temp = xstrdup (optarg);
+ add_include_dir (temp);
+ break;
+ }
+
+ case 'o':
+ out_file_name = xstrdup (optarg);
+ break;
+
+ case 'w':
+ break;
+
+ case 'X':
+ /* -X means treat warnings as errors. */
+ break;
}
-#ifdef DONTDEF
- if (gdb_begin(gdb_symbol_file_name) == 0)
- flagseen ['G'] = 0; /* Don't do any gdbsym stuff. */
+ }
+
+ free (shortopts);
+ free (longopts);
+
+ *pargc = new_argc;
+ *pargv = new_argv;
+}
+
+static long start_time;
+
+int
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ int macro_alternate;
+ int macro_strip_at;
+ int keep_it;
+
+ start_time = get_run_time ();
+
+#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
+ setlocale (LC_MESSAGES, "");
+#endif
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ if (debug_memory)
+ {
+#ifdef BFD_ASSEMBLER
+ extern long _bfd_chunksize;
+ _bfd_chunksize = 64;
+#endif
+ chunksize = 64;
+ }
+
+#ifdef HOST_SPECIAL_INIT
+ HOST_SPECIAL_INIT (argc, argv);
+#endif
+
+ myname = argv[0];
+ xmalloc_set_program_name (myname);
+
+ START_PROGRESS (myname, 0);
+
+#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
+#define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
#endif
- /* Here with flags set up in flagseen[]. */
- perform_an_assembly_pass(argc,argv); /* Assemble it. */
+
+ out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
+
+ hex_init ();
+#ifdef BFD_ASSEMBLER
+ bfd_init ();
+ bfd_set_error_program_name (myname);
+#endif
+
+#ifdef USE_EMULATIONS
+ select_emulation_mode (argc, argv);
+#endif
+
+ PROGRESS (1);
+ symbol_begin ();
+ frag_init ();
+ subsegs_begin ();
+ parse_args (&argc, &argv);
+ read_begin ();
+ input_scrub_begin ();
+ expr_begin ();
+
+ if (flag_print_statistics)
+ xatexit (dump_statistics);
+
+ macro_alternate = 0;
+ macro_strip_at = 0;
#ifdef TC_I960
- brtab_emit();
+ macro_strip_at = flag_mri;
+#endif
+#ifdef TC_A29K
+ /* For compatibility with the AMD 29K family macro assembler
+ specification. */
+ macro_alternate = 1;
+ macro_strip_at = 1;
#endif
- if (seen_at_least_1_file()
- && !((had_warnings() && flagseen['Z'])
- || had_errors() > 0)) {
- write_object_file(); /* relax() addresses then emit object file */
- } /* we also check in write_object_file() just before emit. */
- input_scrub_end();
- md_end(); /* MACHINE.c */
+ macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr);
+
+ PROGRESS (1);
-#ifndef VMS
- return((had_warnings() && flagseen['Z'])
- || had_errors() > 0); /* WIN */
-#else /* VMS */
- return(!((had_warnings() && flagseen['Z'])
- || had_errors() > 0)); /* WIN */
-#endif /* VMS */
+#ifdef BFD_ASSEMBLER
+ output_file_create (out_file_name);
+ assert (stdoutput != 0);
+#endif
-} /* main() */
+#ifdef tc_init_after_args
+ tc_init_after_args ();
+#endif
-\f
-/* perform_an_assembly_pass()
- *
- * Here to attempt 1 pass over each input file.
- * We scan argv[*] looking for filenames or exactly "" which is
- * shorthand for stdin. Any argv that is NULL is not a file-name.
- * We set need_pass_2 TRUE if, after this, we still have unresolved
- * expressions of the form (unknown value)+-(unknown value).
- *
- * Note the un*x semantics: there is only 1 logical input file, but it
- * may be a catenation of many 'physical' input files.
- */
-static void perform_an_assembly_pass(argc, argv)
-int argc;
-char **argv;
-{
- int saw_a_file = 0;
+ itbl_init ();
- text_fix_root = NULL;
- data_fix_root = NULL;
- need_pass_2 = 0;
+ /* Now that we have fully initialized, and have created the output
+ file, define any symbols requested by --defsym command line
+ arguments. */
+ while (defsyms != NULL)
+ {
+ symbolS *sym;
+ struct defsym_list *next;
- subseg_new (SEG_TEXT, 0);
+ sym = symbol_new (defsyms->name, absolute_section, defsyms->value,
+ &zero_address_frag);
+ symbol_table_insert (sym);
+ next = defsyms->next;
+ free (defsyms);
+ defsyms = next;
+ }
- argv++; /* skip argv[0] */
- argc--; /* skip argv[0] */
- while (argc--) {
- if (*argv) { /* Is it a file-name argument? */
- saw_a_file++;
- /* argv->"" if stdin desired, else->filename */
- read_a_source_file(*argv);
- }
- argv++; /* completed that argv */
- }
- if(!saw_a_file)
- read_a_source_file("");
-} /* perform_an_assembly_pass() */
-\f
-/*
- * stralloc()
- *
- * Allocate memory for a new copy of a string. Copy the string.
- * Return the address of the new string. Die if there is any error.
- */
+ PROGRESS (1);
+
+ /* Assemble it. */
+ perform_an_assembly_pass (argc, argv);
-static char *
-stralloc (str)
-char * str;
+ cond_finish_check (-1);
+
+#ifdef md_end
+ md_end ();
+#endif
+
+ /* If we've been collecting dwarf2 .debug_line info, either for
+ assembly debugging or on behalf of the compiler, emit it now. */
+ dwarf2_finish ();
+
+ if (seen_at_least_1_file ()
+ && (flag_always_generate_output || had_errors () == 0))
+ keep_it = 1;
+ else
+ keep_it = 0;
+
+#if defined (BFD_ASSEMBLER) || !defined (BFD)
+ /* This used to be done at the start of write_object_file in
+ write.c, but that caused problems when doing listings when
+ keep_it was zero. This could probably be moved above md_end, but
+ I didn't want to risk the change. */
+ subsegs_finish ();
+#endif
+
+ if (keep_it)
+ write_object_file ();
+
+#ifndef NO_LISTING
+ listing_print (listing_filename);
+#endif
+
+#ifndef OBJ_VMS /* does its own file handling */
+#ifndef BFD_ASSEMBLER
+ if (keep_it)
+#endif
+ output_file_close (out_file_name);
+#endif
+
+ if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0)
+ as_bad (_("%d warnings, treating warnings as errors"), had_warnings ());
+
+ if (had_errors () > 0 && ! flag_always_generate_output)
+ keep_it = 0;
+
+ if (!keep_it)
+ unlink (out_file_name);
+
+ input_scrub_end ();
+
+ END_PROGRESS (myname);
+
+ /* Use xexit instead of return, because under VMS environments they
+ may not place the same interpretation on the value given. */
+ if (had_errors () > 0)
+ xexit (EXIT_FAILURE);
+
+ /* Only generate dependency file if assembler was successful. */
+ print_dependencies ();
+
+ xexit (EXIT_SUCCESS);
+}
+
+static void
+dump_statistics ()
{
- register char * retval;
- register long len;
+#ifdef HAVE_SBRK
+ char *lim = (char *) sbrk (0);
+#endif
+ long run_time = get_run_time () - start_time;
+
+ fprintf (stderr, _("%s: total time in assembly: %ld.%06ld\n"),
+ myname, run_time / 1000000, run_time % 1000000);
+#ifdef HAVE_SBRK
+ fprintf (stderr, _("%s: data size %ld\n"),
+ myname, (long) (lim - (char *) &environ));
+#endif
+
+ subsegs_print_statistics (stderr);
+ write_print_statistics (stderr);
+ symbol_print_statistics (stderr);
+ read_print_statistics (stderr);
- len = strlen (str) + 1;
- retval = xmalloc (len);
- (void) strcpy(retval, str);
- return(retval);
+#ifdef tc_print_statistics
+ tc_print_statistics (stderr);
+#endif
+#ifdef obj_print_statistics
+ obj_print_statistics (stderr);
+#endif
}
\f
-#ifdef comment
-static void lose() {
- as_fatal("%s: 2nd pass not implemented - get your code from random(3)", myname);
- return;
-} /* lose() */
-#endif /* comment */
-
-static SIGTY
-got_sig(sig)
-int sig;
+/* Here to attempt 1 pass over each input file.
+ We scan argv[*] looking for filenames or exactly "" which is
+ shorthand for stdin. Any argv that is NULL is not a file-name.
+ We set need_pass_2 TRUE if, after this, we still have unresolved
+ expressions of the form (unknown value)+-(unknown value).
+
+ Note the un*x semantics: there is only 1 logical input file, but it
+ may be a catenation of many 'physical' input files. */
+
+static void
+perform_an_assembly_pass (argc, argv)
+ int argc;
+ char **argv;
{
- static here_before = 0;
+ int saw_a_file = 0;
+#ifdef BFD_ASSEMBLER
+ flagword applicable;
+#endif
+
+ need_pass_2 = 0;
+
+#ifndef BFD_ASSEMBLER
+#ifdef MANY_SEGMENTS
+ {
+ unsigned int i;
+ for (i = SEG_E0; i < SEG_UNKNOWN; i++)
+ segment_info[i].fix_root = 0;
+ }
+ /* Create the three fixed ones. */
+ {
+ segT seg;
+
+#ifdef TE_APOLLO
+ seg = subseg_new (".wtext", 0);
+#else
+ seg = subseg_new (".text", 0);
+#endif
+ assert (seg == SEG_E0);
+ seg = subseg_new (".data", 0);
+ assert (seg == SEG_E1);
+ seg = subseg_new (".bss", 0);
+ assert (seg == SEG_E2);
+#ifdef TE_APOLLO
+ create_target_segments ();
+#endif
+ }
+
+#else /* not MANY_SEGMENTS */
+ text_fix_root = NULL;
+ data_fix_root = NULL;
+ bss_fix_root = NULL;
+#endif /* not MANY_SEGMENTS */
+#else /* BFD_ASSEMBLER */
+ /* Create the standard sections, and those the assembler uses
+ internally. */
+ text_section = subseg_new (TEXT_SECTION_NAME, 0);
+ data_section = subseg_new (DATA_SECTION_NAME, 0);
+ bss_section = subseg_new (BSS_SECTION_NAME, 0);
+ /* @@ FIXME -- we're setting the RELOC flag so that sections are assumed
+ to have relocs, otherwise we don't find out in time. */
+ applicable = bfd_applicable_section_flags (stdoutput);
+ bfd_set_section_flags (stdoutput, text_section,
+ applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
+ | SEC_CODE | SEC_READONLY));
+ bfd_set_section_flags (stdoutput, data_section,
+ applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
+ | SEC_DATA));
+ bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
+ seg_info (bss_section)->bss = 1;
+ subseg_new (BFD_ABS_SECTION_NAME, 0);
+ subseg_new (BFD_UND_SECTION_NAME, 0);
+ reg_section = subseg_new ("*GAS `reg' section*", 0);
+ expr_section = subseg_new ("*GAS `expr' section*", 0);
+
+#endif /* BFD_ASSEMBLER */
+
+ subseg_set (text_section, 0);
- as_bad("Interrupted by signal %d", sig);
- if(here_before++)
- exit(1);
- return((SIGTY) 0);
+ /* This may add symbol table entries, which requires having an open BFD,
+ and sections already created, in BFD_ASSEMBLER mode. */
+ md_begin ();
+
+#ifdef obj_begin
+ obj_begin ();
+#endif
+
+ /* Skip argv[0]. */
+ argv++;
+ argc--;
+
+ while (argc--)
+ {
+ if (*argv)
+ { /* Is it a file-name argument? */
+ PROGRESS (1);
+ saw_a_file++;
+ /* argv->"" if stdin desired, else->filename */
+ read_a_source_file (*argv);
+ }
+ argv++; /* completed that argv */
+ }
+ if (!saw_a_file)
+ read_a_source_file ("");
}
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+/* The interface between the macro code and gas expression handling. */
-/* end: as.c */
+static int
+macro_expr (emsg, idx, in, val)
+ const char *emsg;
+ int idx;
+ sb *in;
+ int *val;
+{
+ char *hold;
+ expressionS ex;
+
+ sb_terminate (in);
+
+ hold = input_line_pointer;
+ input_line_pointer = in->ptr + idx;
+ expression (&ex);
+ idx = input_line_pointer - in->ptr;
+ input_line_pointer = hold;
+
+ if (ex.X_op != O_constant)
+ as_bad ("%s", emsg);
+
+ *val = (int) ex.X_add_number;
+
+ return idx;
+}
projects / deliverable / binutils-gdb.git / blobdiff