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Diffstat (limited to 'binutils-2.17/gas/as.c')
| -rw-r--r-- | binutils-2.17/gas/as.c | 1207 |
1 files changed, 0 insertions, 1207 deletions
diff --git a/binutils-2.17/gas/as.c b/binutils-2.17/gas/as.c deleted file mode 100644 index 727a1dd4..00000000 --- a/binutils-2.17/gas/as.c +++ /dev/null @@ -1,1207 +0,0 @@ -/* as.c - GAS main program. - Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004, 2005 - Free Software Foundation, Inc. - - 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 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. - - 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, 51 Franklin Street - Fifth Floor, Boston, MA - 02110-1301, USA. */ - -/* 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 "ansidecl.h" - -#define COMMON - -#include "as.h" -#include "subsegs.h" -#include "output-file.h" -#include "sb.h" -#include "macro.h" -#include "dwarf2dbg.h" -#include "dw2gencfi.h" -#include "hash.h" -#include "bfdver.h" - -#ifdef HAVE_ITBL_CPU -#include "itbl-ops.h" -#else -#define itbl_parse(itbl_file) 1 -#define itbl_init() -#endif - -#ifdef HAVE_SBRK -#ifdef NEED_DECLARATION_SBRK -extern PTR sbrk (); -#endif -#endif - -#ifdef USING_CGEN -/* Perform any cgen specific initialisation for gas. */ -extern void gas_cgen_begin (void); -#endif - -/* Keep a record of the itbl files we read in. */ -struct itbl_file_list -{ - struct itbl_file_list *next; - char *name; -}; - -/* 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; -}; - - -/* True if a listing is wanted. */ -int listing; - -/* Type of debugging to generate. */ -enum debug_info_type debug_type = DEBUG_UNSPECIFIED; -int use_gnu_debug_info_extensions = 0; - -#ifndef MD_DEBUG_FORMAT_SELECTOR -#define MD_DEBUG_FORMAT_SELECTOR NULL -#endif -static enum debug_info_type (*md_debug_format_selector) (int *) = MD_DEBUG_FORMAT_SELECTOR; - -/* Maximum level of macro nesting. */ -int max_macro_nest = 100; - -/* argv[0] */ -static char * myname; - -/* 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; - -/* Enable verbose mode. */ -int verbose = 0; - -segT reg_section; -segT expr_section; -segT text_section; -segT data_section; -segT bss_section; - -/* Name of listing file. */ -static char *listing_filename = NULL; - -static struct defsym_list *defsyms; - -static struct itbl_file_list *itbl_files; - -static long start_time; - -static int flag_macro_alternate; - - -#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 (int argc, char **argv) -{ - 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 (void) -{ - abort (); - return NULL; -} - -void -common_emul_init (void) -{ - 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 (void) -{ - static int printed; - - if (printed) - return; - printed = 1; - - fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"), - VERSION, TARGET_ALIAS, BFD_VERSION_STRING); -} - -static void -show_usage (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\ - =FILE list to FILE (must be last sub-option)\n")); - - fprintf (stream, _("\ - --alternate initially turn on alternate macro syntax\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 -#if defined OBJ_ELF || defined OBJ_MAYBE_ELF - fprintf (stream, _("\ - --execstack require executable stack for this object\n")); - fprintf (stream, _("\ - --noexecstack don't require executable stack for this object\n")); -#endif - fprintf (stream, _("\ - -f skip whitespace and comment preprocessing\n")); - fprintf (stream, _("\ - -g --gen-debug generate debugging information\n")); - fprintf (stream, _("\ - --gstabs generate STABS debugging information\n")); - fprintf (stream, _("\ - --gstabs+ generate STABS debug info with GNU extensions\n")); - fprintf (stream, _("\ - --gdwarf-2 generate DWARF2 debugging information\n")); - fprintf (stream, _("\ - --hash-size=<value> set the hash table size close to <value>\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, _("\ - --reduce-memory-overheads \n\ - prefer smaller memory use at the cost of longer\n\ - assembly times\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")); - fprintf (stream, _("\ - @FILE read options from FILE\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 (int * pargc, char *** pargv) -{ - int old_argc; - int new_argc; - char ** old_argv; - char ** 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', 'a', ':', ':', 'D', 'f', 'g', ':',':', '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; - /* Codes used for the long options with no short synonyms. */ - enum option_values - { - OPTION_HELP = OPTION_STD_BASE, - OPTION_NOCPP, - OPTION_STATISTICS, - OPTION_VERSION, - OPTION_DUMPCONFIG, - OPTION_VERBOSE, - OPTION_EMULATION, - OPTION_DEFSYM, - OPTION_INSTTBL, - OPTION_LISTING_LHS_WIDTH, - OPTION_LISTING_LHS_WIDTH2, - OPTION_LISTING_RHS_WIDTH, - OPTION_LISTING_CONT_LINES, - OPTION_DEPFILE, - OPTION_GSTABS, - OPTION_GSTABS_PLUS, - OPTION_GDWARF2, - OPTION_STRIP_LOCAL_ABSOLUTE, - OPTION_TRADITIONAL_FORMAT, - OPTION_WARN, - OPTION_TARGET_HELP, - OPTION_EXECSTACK, - OPTION_NOEXECSTACK, - OPTION_ALTERNATE, - OPTION_AL, - OPTION_HASH_TABLE_SIZE, - OPTION_REDUCE_MEMORY_OVERHEADS, - OPTION_WARN_FATAL - /* When you add options here, check that they do - not collide with OPTION_MD_BASE. See as.h. */ - }; - - static const struct option std_longopts[] = - { - /* Note: commas are placed at the start of the line rather than - the end of the preceeding line so that it is simpler to - selectively add and remove lines from this list. */ - {"alternate", no_argument, NULL, OPTION_ALTERNATE} - /* The entry for "a" is here to prevent getopt_long_only() from - considering that -a is an abbreviation for --alternate. This is - necessary because -a=<FILE> is a valid switch but getopt would - normally reject it since --alternate does not take an argument. */ - ,{"a", optional_argument, NULL, 'a'} - /* Handle -al=<FILE>. */ - ,{"al", optional_argument, NULL, OPTION_AL} - ,{"defsym", required_argument, NULL, OPTION_DEFSYM} - ,{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG} - ,{"emulation", required_argument, NULL, OPTION_EMULATION} -#if defined OBJ_ELF || defined OBJ_MAYBE_ELF - ,{"execstack", no_argument, NULL, OPTION_EXECSTACK} - ,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK} -#endif - ,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL} - ,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2} - /* GCC uses --gdwarf-2 but GAS uses to use --gdwarf2, - so we keep it here for backwards compatibility. */ - ,{"gdwarf2", no_argument, NULL, OPTION_GDWARF2} - ,{"gen-debug", no_argument, NULL, 'g'} - ,{"gstabs", no_argument, NULL, OPTION_GSTABS} - ,{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS} - ,{"hash-size", required_argument, NULL, OPTION_HASH_TABLE_SIZE} - ,{"help", no_argument, NULL, OPTION_HELP} - /* 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} - /* getopt allows abbreviations, so we do this to stop it from - treating -k as an abbreviation for --keep-locals. Some - ports use -k to enable PIC assembly. */ - ,{"keep-locals", no_argument, NULL, 'L'} - ,{"keep-locals", no_argument, NULL, 'L'} - ,{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH} - ,{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2} - ,{"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH} - ,{"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES} - ,{"MD", required_argument, NULL, OPTION_DEPFILE} - ,{"mri", no_argument, NULL, 'M'} - ,{"nocpp", no_argument, NULL, OPTION_NOCPP} - ,{"no-warn", no_argument, NULL, 'W'} - ,{"reduce-memory-overheads", no_argument, NULL, OPTION_REDUCE_MEMORY_OVERHEADS} - ,{"statistics", no_argument, NULL, OPTION_STATISTICS} - ,{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE} - ,{"version", no_argument, NULL, OPTION_VERSION} - ,{"verbose", no_argument, NULL, OPTION_VERBOSE} - ,{"target-help", no_argument, NULL, OPTION_TARGET_HELP} - ,{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT} - ,{"warn", no_argument, NULL, OPTION_WARN} - }; - - /* 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 = 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 = 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 explicitly 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 (); - verbose = 1; - break; - } - else - as_bad (_("unrecognized option -%c%s"), optc, optarg ? optarg : ""); - /* 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"), BFD_VERSION_STRING); - printf (_("Copyright 2005 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'; - i = bfd_scan_vma (s, (const char **) NULL, 0); - n = 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")); - break; - } - - n = 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) - as_fatal (_("failed to read instruction table %s\n"), - itbl_files->name); - } - break; - - case OPTION_DEPFILE: - start_dependencies (optarg); - break; - - case 'g': - /* Some backends, eg Alpha and Mips, use the -g switch for their - own purposes. So we check here for an explicit -g and allow - the backend to decide if it wants to process it. */ - if ( old_argv[optind - 1][1] == 'g' - && md_parse_option (optc, optarg)) - continue; - - if (md_debug_format_selector) - debug_type = md_debug_format_selector (& use_gnu_debug_info_extensions); - else if (IS_ELF) - debug_type = DEBUG_DWARF2; - else - debug_type = DEBUG_STABS; - break; - - case OPTION_GSTABS_PLUS: - use_gnu_debug_info_extensions = 1; - /* Fall through. */ - 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': - 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; - -#if defined OBJ_ELF || defined OBJ_MAYBE_ELF - case OPTION_EXECSTACK: - flag_execstack = 1; - flag_noexecstack = 0; - break; - - case OPTION_NOEXECSTACK: - flag_noexecstack = 1; - flag_execstack = 0; - break; -#endif - case 'Z': - flag_always_generate_output = 1; - break; - - case OPTION_AL: - listing |= LISTING_LISTING; - if (optarg) - listing_filename = xstrdup (optarg); - break; - - case OPTION_ALTERNATE: - optarg = old_argv [optind - 1]; - while (* optarg == '-') - optarg ++; - - if (strcmp (optarg, "alternate") == 0) - { - flag_macro_alternate = 1; - break; - } - optarg ++; - /* Fall through. */ - - case 'a': - if (optarg) - { - if (optarg != old_argv[optind] && optarg[-1] == '=') - --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++; - } - } - 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; - - case OPTION_REDUCE_MEMORY_OVERHEADS: - /* The only change we make at the moment is to reduce - the size of the hash tables that we use. */ - set_gas_hash_table_size (4051); - break; - - case OPTION_HASH_TABLE_SIZE: - { - unsigned long new_size; - - new_size = strtoul (optarg, NULL, 0); - if (new_size) - set_gas_hash_table_size (new_size); - else - as_fatal (_("--hash-size needs a numeric argument")); - break; - } - } - } - - free (shortopts); - free (longopts); - - *pargc = new_argc; - *pargv = new_argv; - -#ifdef md_after_parse_args - md_after_parse_args (); -#endif -} - -static void -dump_statistics (void) -{ -#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); - -#ifdef tc_print_statistics - tc_print_statistics (stderr); -#endif - -#ifdef obj_print_statistics - obj_print_statistics (stderr); -#endif -} - -#ifndef OBJ_VMS -static void -close_output_file (void) -{ - output_file_close (out_file_name); -} -#endif - -/* The interface between the macro code and gas expression handling. */ - -static int -macro_expr (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_and_evaluate (&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; -} - -/* 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 (int argc, char ** argv) -{ - int saw_a_file = 0; - flagword applicable; - - need_pass_2 = 0; - - /* 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); - - subseg_set (text_section, 0); - - /* This may add symbol table entries, which requires having an open BFD, - and sections already created. */ - md_begin (); - -#ifdef USING_CGEN - gas_cgen_begin (); -#endif -#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 (""); -} - - -int -main (int argc, char ** argv) -{ - int macro_strip_at; - int keep_it; - - start_time = get_run_time (); - -#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) - setlocale (LC_MESSAGES, ""); -#endif -#if defined (HAVE_SETLOCALE) - setlocale (LC_CTYPE, ""); -#endif - bindtextdomain (PACKAGE, LOCALEDIR); - textdomain (PACKAGE); - - if (debug_memory) - chunksize = 64; - -#ifdef HOST_SPECIAL_INIT - HOST_SPECIAL_INIT (argc, argv); -#endif - - myname = argv[0]; - xmalloc_set_program_name (myname); - - expandargv (&argc, &argv); - - START_PROGRESS (myname, 0); - -#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME -#define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out" -#endif - - out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME; - - hex_init (); - bfd_init (); - bfd_set_error_program_name (myname); - -#ifdef USE_EMULATIONS - select_emulation_mode (argc, argv); -#endif - - PROGRESS (1); - /* Call parse_args before any of the init/begin functions - so that switches like --hash-size can be honored. */ - parse_args (&argc, &argv); - symbol_begin (); - frag_init (); - subsegs_begin (); - read_begin (); - input_scrub_begin (); - expr_begin (); - -#ifndef OBJ_VMS /* Does its own file handling. */ - /* It has to be called after dump_statistics (). */ - xatexit (close_output_file); -#endif - - if (flag_print_statistics) - xatexit (dump_statistics); - - macro_strip_at = 0; -#ifdef TC_I960 - macro_strip_at = flag_mri; -#endif - - macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr); - - PROGRESS (1); - - output_file_create (out_file_name); - assert (stdoutput != 0); - -#ifdef tc_init_after_args - tc_init_after_args (); -#endif - - itbl_init (); - - /* 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; - - sym = symbol_new (defsyms->name, absolute_section, defsyms->value, - &zero_address_frag); - symbol_table_insert (sym); - next = defsyms->next; - free (defsyms); - defsyms = next; - } - - PROGRESS (1); - - /* Assemble it. */ - perform_an_assembly_pass (argc, argv); - - cond_finish_check (-1); - -#ifdef md_end - md_end (); -#endif - -#if defined OBJ_ELF || defined OBJ_MAYBE_ELF - if ((flag_execstack || flag_noexecstack) - && OUTPUT_FLAVOR == bfd_target_elf_flavour) - { - segT gnustack; - - gnustack = subseg_new (".note.GNU-stack", 0); - bfd_set_section_flags (stdoutput, gnustack, - SEC_READONLY | (flag_execstack ? SEC_CODE : 0)); - - } -#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 we constructed dwarf2 .eh_frame info, either via .cfi - directives from the user or by the backend, emit it now. */ - cfi_finish (); - - if (seen_at_least_1_file () - && (flag_always_generate_output || had_errors () == 0)) - keep_it = 1; - else - keep_it = 0; - - /* 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 (); - - if (keep_it) - write_object_file (); - -#ifndef NO_LISTING - listing_print (listing_filename); -#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_if_ordinary (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); -} |