X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gas%2Fas.c;h=6cf324d1d90862b2e01823cb7d7061a7933e04fe;hb=d0398d6ac6e557e0b32628c7acd307b7dd538ef1;hp=db21815035663b37c563af920679f96a037b3809;hpb=27e232885db363fb545fd2f450e72d929e59b8f6;p=deliverable%2Fbinutils-gdb.git diff --git a/gas/as.c b/gas/as.c index db21815035..6cf324d1d9 100644 --- a/gas/as.c +++ b/gas/as.c @@ -1,5 +1,5 @@ /* as.c - GAS main program. - Copyright (C) 1987, 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 + 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. @@ -17,21 +17,18 @@ 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. */ + 02111-1307, USA. */ -/* - * 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 "ansidecl.h" @@ -43,6 +40,7 @@ #include "output-file.h" #include "sb.h" #include "macro.h" +#include "dwarf2dbg.h" #ifdef HAVE_ITBL_CPU #include "itbl-ops.h" @@ -63,19 +61,21 @@ 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 *)); -int listing; /* true if a listing is wanted */ +/* True if a listing is wanted. */ +int listing; -static char *listing_filename = NULL; /* Name of listing file. */ +/* Name of listing file. */ +static char *listing_filename = NULL; /* Type of debugging to generate. */ -enum debug_info_type debug_type = DEBUG_NONE; +enum debug_info_type debug_type = DEBUG_UNSPECIFIED; /* Maximum level of macro nesting. */ - int max_macro_nest = 100; -char *myname; /* argv[0] */ +/* argv[0] */ +char *myname; #ifdef BFD_ASSEMBLER segT reg_section, expr_section; segT text_section, data_section, bss_section; @@ -92,8 +92,7 @@ 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 { struct defsym_list *next; char *name; valueT value; @@ -101,10 +100,9 @@ struct defsym_list static struct defsym_list *defsyms; -/* Keep a record of the itbl files we read in. */ +/* Keep a record of the itbl files we read in. */ -struct itbl_file_list -{ +struct itbl_file_list { struct itbl_file_list *next; char *name; }; @@ -117,6 +115,7 @@ static struct itbl_file_list *itbl_files; 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]); @@ -142,7 +141,7 @@ select_emulation_mode (argc, argv) if (p) p++; else - p = argv[i+1]; + p = argv[i + 1]; if (!p || !*p) as_fatal (_("missing emulation mode name")); @@ -246,12 +245,12 @@ Options:\n\ fprintf (stream, "\ --em=["); - for (i = 0; i < n_emulations-1; i++) + 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) + if (!def_em) def_em = DEFAULT_EMULATION; fprintf (stream, _("\ emulate output (default %s)\n"), def_em); @@ -266,6 +265,8 @@ Options:\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")); @@ -326,16 +327,14 @@ Options:\n\ 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 - */ +/* 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) @@ -352,24 +351,23 @@ parse_args (pargc, pargv) char *shortopts; extern CONST char *md_shortopts; - static const char std_shortopts[] = - { - '-', 'J', + static const char std_shortopts[] = { + '-', 'J', #ifndef WORKING_DOT_WORD - /* -K is not meaningful if .word is not being hacked. */ - 'K', + /* -K is not meaningful if .word is not being hacked. */ + 'K', #endif - 'L', 'M', 'R', 'W', 'Z', 'f', 'a', ':', ':', 'D', 'I', ':', 'o', ':', + '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', + /* -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' - }; + '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; @@ -421,13 +419,17 @@ parse_args (pargc, pargv) {"no-warn", no_argument, NULL, 'W'}, #define OPTION_WARN (OPTION_STD_BASE + 18) {"warn", no_argument, NULL, OPTION_WARN}, -#define OPTION_WARN_FATAL (OPTION_STD_BASE + 19) +#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. */ + always NULL terminate. */ shortopts = concat (std_shortopts, md_shortopts, (char *) NULL); longopts = (struct option *) xmalloc (sizeof (std_longopts) + md_longopts_size @@ -476,7 +478,7 @@ parse_args (pargc, pargv) 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; + new_argv[new_argc++] = optarg, new_argv[new_argc] = NULL; else #else case 'v': @@ -485,7 +487,7 @@ parse_args (pargc, pargv) print_version_id (); break; } - /*FALLTHRU*/ + /* Fall through. */ case '?': exit (EXIT_FAILURE); @@ -497,6 +499,10 @@ parse_args (pargc, pargv) 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); @@ -519,7 +525,7 @@ parse_args (pargc, pargv) case OPTION_VERSION: /* This output is intended to follow the GNU standards document. */ printf (_("GNU assembler %s\n"), VERSION); - printf (_("Copyright 2000 Free Software Foundation, Inc.\n")); + 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")); @@ -575,29 +581,29 @@ the GNU General Public License. This program has absolutely no warranty.\n")); case OPTION_INSTTBL: case 't': { - /* optarg is the name of the file containing the instruction - formats, opcodes, register names, etc. */ + /* 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") ); + 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. */ + 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"), + fprintf (stderr, _("Failed to read instruction table %s\n"), itbl_files->name); exit (EXIT_SUCCESS); } @@ -611,7 +617,7 @@ the GNU General Public License. This program has absolutely no warranty.\n")); case OPTION_GSTABS: debug_type = DEBUG_STABS; break; - + case OPTION_GDWARF2: debug_type = DEBUG_DWARF2; break; @@ -631,22 +637,22 @@ the GNU General Public License. This program has absolutely no warranty.\n")); break; case OPTION_LISTING_LHS_WIDTH: - listing_lhs_width = atoi(optarg); + 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); + 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); + listing_rhs_width = atoi (optarg); break; case OPTION_LISTING_CONT_LINES: - listing_lhs_cont_lines = atoi(optarg); + listing_lhs_cont_lines = atoi (optarg); break; case 'M': @@ -725,8 +731,8 @@ the GNU General Public License. This program has absolutely no warranty.\n")); break; case 'D': - /* DEBUG is implemented: it debugs different */ - /* things from other people's assemblers. */ + /* DEBUG is implemented: it debugs different + things from other people's assemblers. */ flag_debug = 1; break; @@ -735,7 +741,7 @@ the GNU General Public License. This program has absolutely no warranty.\n")); break; case 'I': - { /* Include file directory */ + { /* Include file directory. */ char *temp = xstrdup (optarg); add_include_dir (temp); break; @@ -749,7 +755,7 @@ the GNU General Public License. This program has absolutely no warranty.\n")); break; case 'X': - /* -X means treat warnings as errors */ + /* -X means treat warnings as errors. */ break; } } @@ -763,7 +769,7 @@ the GNU General Public License. This program has absolutely no warranty.\n")); static long start_time; -int +int main (argc, argv) int argc; char **argv; @@ -818,7 +824,7 @@ main (argc, argv) symbol_begin (); frag_init (); subsegs_begin (); - parse_args (&argc, &argv); + parse_args (&argc, &argv); read_begin (); input_scrub_begin (); expr_begin (); @@ -871,7 +877,8 @@ main (argc, argv) PROGRESS (1); - perform_an_assembly_pass (argc, argv); /* Assemble it. */ + /* Assemble it. */ + perform_an_assembly_pass (argc, argv); cond_finish_check (-1); @@ -879,6 +886,10 @@ main (argc, argv) 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; @@ -907,8 +918,8 @@ main (argc, argv) 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 (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; @@ -959,19 +970,16 @@ dump_statistics () #endif } +/* 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). -/* 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 + 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; @@ -990,7 +998,7 @@ perform_an_assembly_pass (argc, argv) for (i = SEG_E0; i < SEG_UNKNOWN; i++) segment_info[i].fix_root = 0; } - /* Create the three fixed ones */ + /* Create the three fixed ones. */ { segT seg; @@ -1021,7 +1029,7 @@ perform_an_assembly_pass (argc, argv) 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. */ + 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 @@ -1048,22 +1056,24 @@ perform_an_assembly_pass (argc, argv) obj_begin (); #endif - argv++; /* skip argv[0] */ - argc--; /* skip argv[0] */ + /* Skip argv[0]. */ + argv++; + argc--; + while (argc--) { if (*argv) - { /* Is it a file-name argument? */ + { /* Is it a file-name argument? */ PROGRESS (1); saw_a_file++; - /* argv->"" if stdin desired, else->filename */ + /* argv->"" if stdin desired, else->filename */ read_a_source_file (*argv); } - argv++; /* completed that argv */ + argv++; /* completed that argv */ } if (!saw_a_file) read_a_source_file (""); -} /* perform_an_assembly_pass() */ +} /* The interface between the macro code and gas expression handling. */ @@ -1092,5 +1102,3 @@ macro_expr (emsg, idx, in, val) return idx; } - -/* end of as.c */