binutils-gdb/gas/as.c

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1991-04-04 20:19:53 +02:00
/* as.c - GAS main program.
Copyright (C) 1987, 90, 91, 92, 93, 94, 95, 96, 1997
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, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
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/*
* 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"
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#define COMMON
#include "as.h"
#include "subsegs.h"
#include "output-file.h"
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
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#include "sb.h"
#include "macro.h"
#ifdef HAVE_SBRK
#ifdef NEED_DECLARATION_SBRK
extern PTR sbrk ();
#endif
#endif
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static void perform_an_assembly_pass PARAMS ((int argc, char **argv));
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
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static int macro_expr PARAMS ((const char *, int, sb *, int *));
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int listing; /* true if a listing is wanted */
static char *listing_filename = NULL; /* Name of listing file. */
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
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/* Maximum level of macro nesting. */
int max_macro_nest = 100;
char *myname; /* argv[0] */
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#ifdef BFD_ASSEMBLER
segT reg_section, expr_section;
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segT text_section, data_section, bss_section;
#endif
int chunksize = 5000;
/* 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;
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void
print_version_id ()
{
static int printed;
if (printed)
return;
printed = 1;
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");
}
void
show_usage (stream)
FILE *stream;
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{
fprintf (stream, "Usage: %s [option...] [asmfile...]\n", myname);
fprintf (stream, "\
Options:\n\
-a[sub-option...] turn on listings\n\
Sub-options [default hls]:\n\
d omit debugging directives\n\
h include high-level source\n\
l include assembly\n\
n omit forms processing\n\
s include symbols\n\
=file set listing file name (must be last sub-option)\n");
fprintf (stream, "\
-D produce assembler debugging messages\n\
--defsym SYM=VAL define symbol SYM to given value\n\
-f skip whitespace and comment preprocessing\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");
fprintf (stream, "\
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
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-M,--mri assemble in MRI compatibility mode\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\
--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");
md_show_usage (stream);
fprintf (stream, "\nReport bugs to bug-gnu-utils@prep.ai.mit.edu\n");
}
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#ifdef USE_EMULATIONS
#define EMULATION_ENVIRON "AS_EMULATION"
extern struct emulation mipsbelf, mipslelf, mipself;
extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
static struct emulation *const emulations[] = { EMULATIONS };
static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
static void
select_emulation_mode (argc, argv)
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 ()
{
abort ();
return NULL;
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}
void
common_emul_init ()
{
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
/*
* 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
*/
void
parse_args (pargc, pargv)
int *pargc;
char ***pargv;
{
int old_argc, new_argc;
char **old_argv, **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
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
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'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',
#endif
'w', 'X',
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/* 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;
static const struct option std_longopts[] = {
#define OPTION_HELP (OPTION_STD_BASE)
{"help", no_argument, NULL, OPTION_HELP},
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
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{"mri", no_argument, NULL, 'M'},
#define OPTION_NOCPP (OPTION_STD_BASE + 1)
{"nocpp", no_argument, NULL, OPTION_NOCPP},
#define OPTION_STATISTICS (OPTION_STD_BASE + 2)
{"statistics", no_argument, NULL, OPTION_STATISTICS},
#define OPTION_VERSION (OPTION_STD_BASE + 3)
{"version", no_argument, NULL, OPTION_VERSION},
#define OPTION_DUMPCONFIG (OPTION_STD_BASE + 4)
{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG},
#define OPTION_VERBOSE (OPTION_STD_BASE + 5)
{"verbose", no_argument, NULL, OPTION_VERBOSE},
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#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},
#define OPTION_INSTTBL (OPTION_STD_BASE + 8)
/* New option for extending instruction set (see also -t above).
1997-02-23 23:47:20 +01:00
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}
};
/* Construct the option lists from the standard list and the
target dependent list. */
shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
longopts = (struct option *) xmalloc (sizeof (std_longopts) + md_longopts_size);
memcpy (longopts, std_longopts, sizeof (std_longopts));
memcpy ((char *) longopts + sizeof (std_longopts),
md_longopts, md_longopts_size);
/* Make a local copy of the old argv. */
old_argc = *pargc;
old_argv = *pargv;
/* Initialize a new argv that contains no options. */
new_argv = (char **) 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 explicity 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 ();
break;
}
/*FALLTHRU*/
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_HELP:
show_usage (stdout);
exit (EXIT_SUCCESS);
case OPTION_NOCPP:
break;
case OPTION_STATISTICS:
flag_print_statistics = 1;
break;
case OPTION_VERSION:
/* This output is intended to follow the GNU standards document. */
printf ("GNU assembler %s\n", GAS_VERSION);
printf ("Copyright 1996 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);
1995-05-23 02:09:34 +02:00
case OPTION_EMULATION:
#ifdef USE_EMULATIONS
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if (strcmp (optarg, this_emulation->name))
as_fatal ("multiple emulation names specified");
#else
as_fatal ("emulations not handled in this configuration");
#endif
1995-05-23 02:09:34 +02:00
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;
long 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 = strtol (s, (char **) NULL, 0);
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;
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);
1997-02-23 23:47:20 +01:00
if (itbl_parse (itbl_files->name) != 0)
{
fprintf (stderr, "Failed to read instruction table %s\n",
itbl_files->name);
exit (EXIT_SUCCESS);
}
}
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;
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
1995-08-21 20:35:11 +02:00
case 'M':
flag_mri = 1;
#ifdef TC_M68K
flag_m68k_mri = 1;
#endif
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
1995-08-21 20:35:11 +02:00
break;
case 'R':
flag_readonly_data_in_text = 1;
break;
case 'W':
flag_no_warnings = 1;
break;
case 'Z':
flag_always_generate_output = 1;
break;
case 'a':
if (optarg)
{
while (*optarg)
{
switch (*optarg)
{
case 'd':
listing |= LISTING_NODEBUG;
break;
case 'h':
listing |= LISTING_HLL;
break;
case 'l':
listing |= LISTING_LISTING;
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;
}
}
free (shortopts);
free (longopts);
*pargc = new_argc;
*pargv = new_argv;
}
static void dump_statistics ();
static long start_time;
int
main (argc, argv)
int argc;
char **argv;
{
int macro_alternate;
int macro_strip_at;
int keep_it;
start_time = get_run_time ();
if (debug_memory)
{
#ifdef BFD_ASSEMBLER
extern long _bfd_chunksize;
_bfd_chunksize = 64;
#endif
chunksize = 64;
}
#ifdef HOST_SPECIAL_INIT
HOST_SPECIAL_INIT (argc, argv);
#endif
myname = argv[0];
1994-11-30 01:56:43 +01:00
xmalloc_set_program_name (myname);
START_PROGRESS (myname, 0);
#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
#define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
#endif
1994-11-30 01:56:43 +01:00
out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
1995-05-23 02:09:34 +02:00
hex_init ();
#ifdef BFD_ASSEMBLER
bfd_init ();
bfd_set_error_program_name (myname);
#endif
1995-05-23 02:09:34 +02:00
#ifdef USE_EMULATIONS
select_emulation_mode (argc, argv);
#endif
PROGRESS (1);
symbol_begin ();
frag_init ();
subsegs_begin ();
parse_args (&argc, &argv);
read_begin ();
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
1995-08-21 20:35:11 +02:00
input_scrub_begin ();
expr_begin ();
if (flag_print_statistics)
xatexit (dump_statistics);
macro_alternate = 0;
macro_strip_at = 0;
#ifdef TC_I960
macro_strip_at = flag_mri;
#endif
#ifdef TC_A29K
/* For compatibility with the AMD 29K family macro assembler
specification. */
macro_alternate = 1;
macro_strip_at = 1;
#endif
macro_init (macro_alternate, flag_mri, macro_strip_at, macro_expr);
1993-02-24 13:57:00 +01:00
PROGRESS (1);
1993-02-24 13:57:00 +01:00
#ifdef BFD_ASSEMBLER
output_file_create (out_file_name);
assert (stdoutput != 0);
1991-04-04 20:19:53 +02:00
#endif
1993-02-24 13:57:00 +01:00
#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);
perform_an_assembly_pass (argc, argv); /* Assemble it. */
#ifdef md_end
md_end ();
#endif
if (seen_at_least_1_file ()
&& (flag_always_generate_output || had_errors () == 0))
keep_it = 1;
1993-07-07 14:33:11 +02:00
else
keep_it = 0;
if (keep_it)
write_object_file ();
#ifndef NO_LISTING
listing_print (listing_filename);
1993-07-07 14:33:11 +02:00
#endif
#ifndef OBJ_VMS /* does its own file handling */
#ifndef BFD_ASSEMBLER
if (keep_it)
#endif
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);
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);
xexit (EXIT_SUCCESS);
}
static void
dump_statistics ()
{
extern char **environ;
#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
}
1991-04-04 20:19:53 +02:00
1991-04-04 20:19:53 +02:00
/* 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;
1991-04-04 20:19:53 +02:00
{
int saw_a_file = 0;
1993-02-24 13:57:00 +01:00
#ifdef BFD_ASSEMBLER
flagword applicable;
#endif
need_pass_2 = 0;
1993-02-24 13:57:00 +01:00
#ifndef BFD_ASSEMBLER
#ifdef MANY_SEGMENTS
1993-07-07 14:33:11 +02:00
{
unsigned int i;
for (i = SEG_E0; i < SEG_UNKNOWN; i++)
segment_info[i].fix_root = 0;
1993-07-07 14:33:11 +02:00
}
/* Create the three fixed ones */
{
segT seg;
#ifdef TE_APOLLO
seg = subseg_new (".wtext", 0);
#else
seg = subseg_new (".text", 0);
#endif
assert (seg == SEG_E0);
seg = subseg_new (".data", 0);
assert (seg == SEG_E1);
seg = subseg_new (".bss", 0);
assert (seg == SEG_E2);
#ifdef TE_APOLLO
create_target_segments ();
#endif
}
#else /* not MANY_SEGMENTS */
text_fix_root = NULL;
data_fix_root = NULL;
bss_fix_root = NULL;
#endif /* not MANY_SEGMENTS */
1993-02-24 13:57:00 +01:00
#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);
seg_info (bss_section)->bss = 1;
1993-02-24 13:57:00 +01:00
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);
1993-02-24 13:57:00 +01:00
#endif /* BFD_ASSEMBLER */
subseg_set (text_section, 0);
1993-07-07 14:33:11 +02:00
/* This may add symbol table entries, which requires having an open BFD,
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--)
{
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 ("");
} /* perform_an_assembly_pass() */
1991-04-04 20:19:53 +02:00
Add support for macros. * as.c: Include sb.h and macro.h. (max_macro_next): New global variable. (main): Call macro_init. (macro_expr): New static function. * as.h (max_macro_nest): Declare. * read.c (line_label): Rename from mri_line_label. Change all uses. (potable): Add exitm, irp, irpc, macro, mexit, rept. (read_a_source_file): Always clear line_label at the start of a line, not just when flag_mri or LABELS_WITHOUT_COLONS. Fixup MRI/LABELS_WITHOUT_COLONS handling. In MRI mode, permit label: equ val. Set line_label when calling colon. In MRI mode, a leading '.' does not imply a pseudo-op. Check for macro expansion before calling md_assemble. (s_irp): New function. (get_line_sb): New static function. (s_macro): New function. (s_mexit): New function. (s_rept): New function. * read.h (line_label): Rename from mri_line_label. (s_irp, s_rept): Declare. (s_macro, s_mexit): Declare. * input-scrub.c: Include sb.h. (sb_index, from_sb): New static variables. (macro_nest): New static variable. (struct input_save): Add sb_index and from_sb fields. Change next_saved_file field to be struct input_save *. (next_saved_file): Changed to be struct input_save *. (input_scrub_push): Change to return type struct input_save *. Save sb_index and from_sb. (input_scrub_pop): Change parameter type to struct input_save *. Restore sb_index and from_sb. (input_scrub_include_sb): New function. (input_scrub_next_buffer): Handle reading from from_sb. (bump_line_counters): Only increment lines if not using from_sb. * config/tc-m68k.c (opt_table): Add nest. (opt_nest): New static function. * gasp.c: Include sb.h and macro.h. Move all sb related functions and definitions to sb.h and sb.c. Move all macro related functions and definitions to macro.h and macro.c. * sb.h, sb.c: New files, extracted from gasp.c. * macro.h, macro.c: Likewise. * Makefile.in (OBJS): Add sb.o and macro.o (GASPOBJS): Define. (gasp.new): Depend upon $(GASPOBJS). Use $(GASPOBJS) to link. (TARG_CPU_DEP_m68k): Depend upon subsegs.h. (gasp.o): Depend upon sb.h and macro.h. (sb.o): New target. (macro.o): New target. (as.o): Depend upon sb.h and macro.h. (input-scrub.o): Depend upon sb.h. (read.o): Depend upon sb.h and macro.h.
1995-08-21 20:35:11 +02:00
/* The interface between the macro code and gas expression handling. */
static int
macro_expr (emsg, idx, in, val)
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 (&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;
}
/* end of as.c */