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-rw-r--r--gnu/usr.bin/as/as.c428
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diff --git a/gnu/usr.bin/as/as.c b/gnu/usr.bin/as/as.c
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--- a/gnu/usr.bin/as/as.c
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-/* as.c - GAS main program.
- Copyright (C) 1987, 1990, 1991, 1992 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, 675 Mass Ave, Cambridge, MA 02139, 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.
- *
- */
-#ifndef lint
-static char rcsid[] = "$FreeBSD$";
-#endif
-
-#include <stdio.h>
-#include <string.h>
-
-#ifdef _POSIX_SOURCE
-#include <sys/types.h> /* For pid_t in signal.h */
-#endif
-#include <signal.h>
-
-#define COMMON
-
-#include "as.h"
-#include "subsegs.h"
-#if __STDC__ == 1
-
-/* 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. */
-
-#define SIGTY void
-
-static void got_sig(int sig);
-static char *stralloc(char *str);
-static void perform_an_assembly_pass(int argc, char **argv);
-
-#else /* __STDC__ */
-
-#ifndef SIGTY
-#define SIGTY int
-#endif
-
-static SIGTY got_sig();
-static char *stralloc(); /* Make a (safe) copy of a string. */
-static void perform_an_assembly_pass();
-
-#endif /* not __STDC__ */
-
-#ifdef DONTDEF
-static char * gdb_symbol_file_name;
-long gdb_begin();
-#endif
-
-int listing; /* true if a listing is wanted */
-
-char *myname; /* argv[0] */
-extern const char version_string[];
-
-int main(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];
- memset(flagseen, '\0', 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 'a':
- {
- int loop =1;
-
- while (loop) {
- switch (*arg)
- {
- case 'l':
- listing |= LISTING_LISTING;
- arg++;
- break;
- case 's':
- listing |= LISTING_SYMBOLS;
- arg++;
- break;
- case 'h':
- listing |= LISTING_HLL;
- arg++;
- break;
-
- case 'n':
- listing |= LISTING_NOFORM;
- arg++;
- break;
- case 'd':
- listing |= LISTING_NODEBUG;
- arg++;
- break;
- default:
- if (!listing)
- listing= LISTING_DEFAULT;
- loop = 0;
- break;
- }
- }
- }
-
- break;
-
-
- 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 = NULL;
- 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;
- }
-
- 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 OBJ_VMS
- {
- extern char *compiler_version_string;
- compiler_version_string = arg;
- }
-#else /* not OBJ_VMS */
- fprintf(stderr,version_string);
- if (*arg && strcmp(arg,"ersion"))
- as_warn("Unknown -v option ignored");
-#endif /* not OBJ_VMS */
- 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;
- }
- }
- /*
- * 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' */
- }
-#ifdef PIC
- if (flagseen['K'] || flagseen['k'])
- picmode = 1;
-#endif
-#ifdef DONTDEF
- if (gdb_begin(gdb_symbol_file_name) == 0)
- flagseen['G'] = 0; /* Don't do any gdbsym stuff. */
-#endif
- /* Here with flags set up in flagseen[]. */
-
- perform_an_assembly_pass(argc,argv); /* Assemble it. */
-#ifdef TC_I960
- brtab_emit();
-#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 */
-
-#ifndef NO_LISTING
- listing_print("");
-#endif
-
-#ifndef HO_VMS
- return((had_warnings() && flagseen['Z'])
- || had_errors() > 0); /* WIN */
-#else /* HO_VMS */
- return(!((had_warnings() && flagseen['Z'])
- || had_errors() > 0)); /* WIN */
-#endif /* HO_VMS */
-
-} /* main() */
-
-
-/* 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;
- need_pass_2 = 0;
-
-#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 */
- subseg_new (SEG_E0, 0);
- subseg_new (SEG_E1, 0);
- subseg_new (SEG_E2, 0);
- strcpy(segment_info[SEG_E0].scnhdr.s_name,".text");
- strcpy(segment_info[SEG_E1].scnhdr.s_name,".data");
- strcpy(segment_info[SEG_E2].scnhdr.s_name,".bss");
-
- subseg_new (SEG_E0, 0);
-#else /* not MANY_SEGMENTS */
- text_fix_root = NULL;
- data_fix_root = NULL;
- bss_fix_root = NULL;
-
- subseg_new (SEG_TEXT, 0);
-#endif /* not MANY_SEGMENTS */
-
- 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() */
-
-/*
- * 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.
- */
-
-static char *
- stralloc (str)
-char * str;
-{
- register char * retval;
- register long len;
-
- len = strlen (str) + 1;
- retval = xmalloc (len);
- (void) strcpy(retval, str);
- return(retval);
-}
-
-#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;
-{
- static here_before = 0;
-
- as_bad("Interrupted by signal %d", sig);
- if (here_before++)
- exit(1);
- return((SIGTY) 0);
-}
-
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
-
-/* end of as.c */
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