/* as.c - GAS main program.
- Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 1996
+ Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 1997
Free Software Foundation, Inc.
This file is part of GAS, the GNU Assembler.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 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. */
/*
* Main program for AS; a 32-bit assembler of GNU.
*/
#include "ansidecl.h"
-#include "libiberty.h"
#define COMMON
#include "output-file.h"
#include "sb.h"
#include "macro.h"
+#ifndef HAVE_ITBL_CPU
+#define itbl_parse(itbl_file) 1
+#define itbl_init()
+#endif
+#ifdef HAVE_SBRK
+#ifdef NEED_DECLARATION_SBRK
+extern PTR sbrk ();
+#endif
+#endif
+
+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 char *listing_filename = NULL; /* Name of listing file. */
+/* Type of debugging to generate. */
+
+enum debug_info_type debug_type = DEBUG_NONE;
+
/* Maximum level of macro nesting. */
int max_macro_nest = 100;
segT text_section, data_section, bss_section;
#endif
-int chunksize = 5000;
+/* 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
void
print_version_id ()
return;
printed = 1;
- fprintf (stderr, "GNU assembler version %s (%s)", GAS_VERSION, TARGET_ALIAS);
+ fprintf (stderr, "GNU assembler version %s (%s)", VERSION, TARGET_ALIAS);
#ifdef BFD_ASSEMBLER
fprintf (stderr, ", using BFD version %s", BFD_VERSION);
#endif
fprintf (stderr, "\n");
}
-void
+static void
show_usage (stream)
FILE *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 set listing file name (must be last sub-option)\n");
-D produce assembler debugging messages\n\
--defsym SYM=VAL define symbol SYM to given value\n\
-f skip whitespace and comment preprocessing\n\
+--gstabs generate stabs debugging information\n\
--help show this message and exit\n\
-I DIR add DIR to search list for .include directives\n\
-J don't warn about signed overflow\n\
-K warn when differences altered for long displacements\n\
--L keep local symbols (starting with `L')\n");
+-L,--keep-locals keep local symbols (e.g. starting with `L')\n");
fprintf (stream, "\
-M,--mri assemble in MRI compatibility mode\n\
+--MD FILE write dependency information in FILE (default none)\n\
-nocpp ignored\n\
-o OBJFILE name the object-file output OBJFILE (default a.out)\n\
-R fold data section into text section\n\
--statistics print various measured statistics from execution\n\
+--strip-local-absolute strip local absolute symbols\n\
--version print assembler version number and exit\n\
-W suppress warnings\n\
+--itbl INSTTBL extend instruction set to include instructions\n\
+ matching the specifications defined in file INSTTBL\n\
-w ignored\n\
-X ignored\n\
-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\
+--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\
+--listing-rhs-width set the max width in characters of the lines from\n\
+ the source file\n\
+--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);
+
+ fprintf (stream, "\nReport bugs to bug-gnu-utils@prep.ai.mit.edu\n");
}
#ifdef USE_EMULATIONS
extern struct emulation mipsbelf, mipslelf, mipself;
extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
+extern struct emulation i386coff, i386elf;
-static const char *emulation_name;
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;
default_emul_bfd_name ()
{
abort ();
+ return NULL;
}
void
* md_parse_option definitions in config/tc-*.c
*/
-void
+static void
parse_args (pargc, pargv)
int *pargc;
char ***pargv;
'v',
#endif
'w', 'X',
+ /* New option for extending instruction set (see also --itbl below) */
+ 't', ':',
'\0'
};
struct option *longopts;
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_EMULATION (OPTION_STD_BASE + 6)
{"emulation", required_argument, NULL, OPTION_EMULATION},
#define OPTION_DEFSYM (OPTION_STD_BASE + 7)
- {"defsym", required_argument, NULL, OPTION_DEFSYM}
+ {"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}
};
/* Construct the option lists from the standard list and the
flag_print_statistics = 1;
break;
+ case OPTION_STRIP_LOCAL_ABSOLUTE:
+ flag_strip_local_absolute = 1;
+ break;
+
case OPTION_VERSION:
- print_version_id ();
+ /* This output is intended to follow the GNU standards document. */
+ printf ("GNU assembler %s\n", VERSION);
+ printf ("Copyright 1997 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:
{
char *s;
long i;
- symbolS *sym;
+ struct defsym_list *n;
for (s = optarg; *s != '\0' && *s != '='; s++)
;
as_fatal ("bad defsym; format is --defsym name=value");
*s++ = '\0';
i = strtol (s, (char **) NULL, 0);
- sym = symbol_new (optarg, absolute_section, (valueT) i,
- &zero_address_frag);
- symbol_table_insert (sym);
+ 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 'J':
flag_signed_overflow_ok = 1;
break;
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
{
switch (*optarg)
{
+ case 'c':
+ listing |= LISTING_NOCOND;
+ break;
case 'd':
listing |= LISTING_NODEBUG;
break;
case 'l':
listing |= LISTING_LISTING;
break;
+ case 'm':
+ listing |= LISTING_MACEXP;
+ break;
case 'n':
listing |= LISTING_NOFORM;
break;
*pargv = new_argv;
}
-static void dump_statistics ();
static long start_time;
int
start_time = get_run_time ();
+
if (debug_memory)
{
#ifdef BFD_ASSEMBLER
hex_init ();
#ifdef BFD_ASSEMBLER
bfd_init ();
+ bfd_set_error_program_name (myname);
#endif
#ifdef USE_EMULATIONS
symbol_begin ();
frag_init ();
subsegs_begin ();
- parse_args (&argc, &argv);
+ parse_args (&argc, &argv);
read_begin ();
input_scrub_begin ();
expr_begin ();
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);
perform_an_assembly_pass (argc, argv); /* Assemble it. */
+ cond_finish_check (-1);
+
#ifdef md_end
md_end ();
#endif
if (seen_at_least_1_file ()
- && !((had_warnings () && flag_always_generate_output)
- || had_errors () > 0))
+ && (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 ();
output_file_close (out_file_name);
#endif
+ if (had_errors () > 0 && ! flag_always_generate_output)
+ keep_it = 0;
+
if (!keep_it)
unlink (out_file_name);
/* Use xexit instead of return, because under VMS environments they
may not place the same interpretation on the value given. */
- if ((had_warnings () && flag_always_generate_output)
- || had_errors () > 0)
+ if (had_errors () > 0)
xexit (EXIT_FAILURE);
+
+ /* Only generate dependency file if assembler was successful. */
+ print_dependencies ();
+
xexit (EXIT_SUCCESS);
}
and sections already created, in BFD_ASSEMBLER mode. */
md_begin ();
+#ifdef obj_begin
+ obj_begin ();
+#endif
+
argv++; /* skip argv[0] */
argc--; /* skip argv[0] */
while (argc--)
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