/* 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. */
#include <string.h>
#ifdef _POSIX_SOURCE
-#include <sys/types.h> /* For pid_t in signal.h */
+#include <sys/types.h> /* For pid_t in signal.h */
#endif
#include <signal.h>
#define COMMON
#include "as.h"
+#include "config.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. */
+#ifndef SIGTY
+#ifdef __STDC__
#define SIGTY void
+#else
+#define SIGTY int
+#endif /* __STDC__ */
+#endif /* SIGTY */
-static void got_sig(int sig);
-static char *stralloc(char *str);
-static void perform_an_assembly_pass(int argc, char **argv);
-
-#else /* __STDC__ */
+static SIGTY got_sig PARAMS ((int sig));
+static void perform_an_assembly_pass PARAMS ((int argc, char **argv));
-#ifndef SIGTY
-#define SIGTY int
+#ifndef EXIT_SUCCESS
+#define EXIT_SUCCESS 0
+#define EXIT_FAILURE 1
#endif
-static SIGTY got_sig();
-static char *stralloc(); /* Make a (safe) copy of a string. */
-static void perform_an_assembly_pass();
+int listing; /* true if a listing is wanted */
-#endif /* not __STDC__ */
-
-#ifdef DONTDEF
-static char * gdb_symbol_file_name;
-long gdb_begin();
+char *myname; /* argv[0] */
+#ifdef BFD_ASSEMBLER
+segT big_section, reg_section, pass1_section;
+segT diff_section, absent_section;
+segT text_section, data_section, bss_section;
#endif
+\f
+void
+print_version_id ()
+{
+ static int printed;
+ if (printed)
+ return;
+ printed = 1;
-int listing; /* true if a listing is wanted */
+ fprintf (stderr, "GNU assembler version %s (%s)", GAS_VERSION, TARGET_ALIAS);
+#ifdef BFD_ASSEMBLER
+ fprintf (stderr, ", using BFD version %s", BFD_VERSION);
+#endif
+ fprintf (stderr, "\n");
+}
-char *myname; /* argv[0] */
-extern char version_string[];
-\f
-int main(argc,argv)
-int argc;
-char **argv;
+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];
- bzero (flagseen, sizeof(flagseen)); /* aint seen nothing yet */
+ 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 -) */
+
+#if 0 /* do we need any of this?? */
+ {
+ 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);
+ }
+#endif
+
+ 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;
+ out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
+
+#ifdef BFD_ASSEMBLER
+ bfd_init ();
#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;
- }
-
+
+ symbol_begin ();
+ subsegs_begin ();
+ read_begin ();
+ input_scrub_begin ();
+ frag_init ();
+ /*
+ * 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 */
+ 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;
+
+ case 'I':
+ { /* Include file directory */
+
+ char *temp = NULL;
+ if (*arg)
+ {
+ temp = strdup (arg);
+ if (!temp)
+ as_fatal ("virtual memory exhuasted");
+ }
+ 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;
+ }
+
+#ifdef WARN_SIGNED_OVERFLOW_WORD
+ /* Don't warn about signed overflow. */
+ case 'J':
+ break;
+#endif
+
#ifndef WORKING_DOT_WORD
- case 'k':
- break;
+ 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':
+
+ case 'L': /* -L means keep L* symbols */
+ break;
+
+ case 'o':
+ if (*arg) /* Rest of argument is object file-name. */
+ {
+ out_file_name = strdup (arg);
+ if (!out_file_name)
+ as_fatal ("virtual memory exhausted");
+ }
+ 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 */
+ flag_readonly_data_in_text = 1;
+ break;
+
+ case 'v':
#ifdef VMS
- {
- extern char *compiler_version_string;
- compiler_version_string = arg;
- }
+ {
+ 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;
- }
+ if (*arg && strcmp (arg, "ersion"))
+ {
+ as_warn ("Unknown option `-v%s' ignored", arg);
+ arg += strlen (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' */
+
+ print_version_id ();
+#endif /* not VMS */
+ while (*arg)
+ arg++; /* Skip the rest */
+ break;
+
+ case 'W':
+ /* -W means don't warn about things */
+ flag_suppress_warnings = 1;
+ break;
+
+ case 'w':
+ case 'X':
+ /* -X means treat warnings as errors */
+ break;
+ case 'Z':
+ /* -Z means attempt to generate object file even after errors. */
+ flag_always_generate_output = 1;
+ 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;
+ }
}
-#ifdef DONTDEF
- if (gdb_begin(gdb_symbol_file_name) == 0)
- flagseen ['G'] = 0; /* Don't do any gdbsym stuff. */
+ /*
+ * 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 BFD_ASSEMBLER
+ output_file_create (out_file_name);
+ assert (stdoutput != 0);
#endif
- /* Here with flags set up in flagseen[]. */
- perform_an_assembly_pass(argc,argv); /* Assemble it. */
+
+ /* Here with flags set up in flagseen[]. */
+ perform_an_assembly_pass (argc, argv); /* Assemble it. */
#ifdef TC_I960
- brtab_emit();
+ 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 */
-
+ if (seen_at_least_1_file ()
+ && !((had_warnings () && flag_always_generate_output)
+ || had_errors () > 0))
+ {
+ write_object_file (); /* relax() addresses then emit object file */
+ } /* we also check in write_object_file() just before emit. */
+#ifdef BFD_ASSEMBLER
+ else
+ {
+ output_file_close (out_file_name);
+ unlink (out_file_name);
+ }
+#endif
+
+ input_scrub_end ();
+ md_end (); /* MACHINE.c */
+
#ifndef NO_LISTING
- listing_print("");
+ listing_print ("");
#endif
-
-#ifndef VMS
- return((had_warnings() && flagseen['Z'])
- || had_errors() > 0); /* WIN */
-#else /* VMS */
- return(!((had_warnings() && flagseen['Z'])
- || had_errors() > 0)); /* WIN */
-#endif /* VMS */
-
-} /* main() */
+ if ((had_warnings () && flagseen['Z'])
+ || had_errors () > 0)
+ return EXIT_FAILURE;
+ return EXIT_SUCCESS;
+}
\f
+
/* perform_an_assembly_pass()
*
* Here to attempt 1 pass over each input file.
* 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 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
- text_fix_root = NULL;
- data_fix_root = NULL;
-
- subseg_new (SEG_TEXT, 0);
+ int saw_a_file = 0;
+#ifdef BFD_ASSEMBLER
+ flagword applicable;
#endif
- 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.
- */
-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);
-}
-\f
-#ifdef comment
-static void lose() {
- as_fatal("%s: 2nd pass not implemented - get your code from random(3)", myname);
- return;
-} /* lose() */
-#endif /* comment */
+ 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 */
+ 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 */
+#else /* BFD_ASSEMBLER */
+ /* Create the standard sections, and those the assembler uses
+ internally. */
+ text_section = subseg_new (".text", 0);
+ data_section = subseg_new (".data", 0);
+ bss_section = subseg_new (".bss", 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));
+ /* @@ FIXME -- SEC_CODE seems to mean code only, rather than code possibly.*/
+ bfd_set_section_flags (stdoutput, data_section,
+ applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC));
+ bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
+ subseg_new (BFD_ABS_SECTION_NAME, 0);
+ subseg_new (BFD_UND_SECTION_NAME, 0);
+ big_section = subseg_new ("*GAS `big' section*", 0);
+ reg_section = subseg_new ("*GAS `reg' section*", 0);
+ pass1_section = subseg_new ("*GAS `pass1' section*", 0);
+ diff_section = subseg_new ("*GAS `diff' section*", 0);
+ absent_section = subseg_new ("*GAS `absent' section*", 0);
+
+ subseg_new (".text", 0);
+#endif /* BFD_ASSEMBLER */
+
+ /* This may add symbol table entries, which requires having an open BFD,
+ and sections already created, in BFD_ASSEMBLER mode. */
+ md_begin ();
+
+ 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
static SIGTY
- got_sig(sig)
-int sig;
+got_sig (sig)
+ int sig;
{
- static here_before = 0;
-
- as_bad("Interrupted by signal %d", sig);
- if(here_before++)
- exit(1);
- return((SIGTY) 0);
-}
+ static here_before = 0;
-/*
- * Local Variables:
- * comment-column: 0
- * fill-column: 131
- * End:
- */
+ as_bad ("Interrupted by signal %d", sig);
+ if (here_before++)
+ exit (EXIT_FAILURE);
+#if 0 /* If SIGTY is void, this produces warnings. */
+ return ((SIGTY) 0);
+#endif
+}
/* end of as.c */
projects / deliverable / binutils-gdb.git / blobdiff