binutils-gdb/gas/as.c

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/* as.c - GAS main program.
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Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002
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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.
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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. */
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#include "ansidecl.h"
#define COMMON
#include "as.h"
#include "subsegs.h"
#include "output-file.h"
#include "sb.h"
#include "macro.h"
#include "dwarf2dbg.h"
#include "dw2gencfi.h"
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#ifdef BFD_ASSEMBLER
#include "bfdver.h"
#endif
#ifdef HAVE_ITBL_CPU
#include "itbl-ops.h"
#else
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#define itbl_parse(itbl_file) 1
#define itbl_init()
#endif
#ifdef HAVE_SBRK
#ifdef NEED_DECLARATION_SBRK
extern PTR sbrk ();
#endif
#endif
#ifdef USING_CGEN
/* Perform any cgen specific initialisation for gas. */
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extern void gas_cgen_begin (void);
#endif
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/* Keep a record of the itbl files we read in. */
struct itbl_file_list
{
struct itbl_file_list *next;
char *name;
};
/* 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;
};
/* True if a listing is wanted. */
int listing;
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/* Type of debugging to generate. */
* as.c (debug_type): Init to DEBUG_UNSPECIFIED. * as.h (debug_type): Clarify documentation of the meaning of this variable. * dwarf2dbg.c (DWARF2_LINE_MIN_INSN_LENGTH): Default to 1. (print_stats): Fix parenthesis problem. (now_subseg_size): New. (dwarf2_finish): Use it. If DEBUG_DWARF2, emit bits for .debug_info. (dwarf2_directive_file): Don't set debug_type. (dwarf2_where): Honor DEBUG_DWARF2 first. (dwarf2_emit_insn): Renamed from dwarf2_generate_asm_lineno; do nothing if not emitting dwarf2 debug info, or no work. * dwarf2dbg.h (dwarf2_emit_insn): Update. * ecoff.c (add_file): Turn on DEBUG_ECOFF only if DEBUG_UNSPECIFIED. (ecoff_new_file): Likewise. * read.c (generate_lineno_debug): Kill ecoff hackery. Update commentary wrt dwarf2. * config/tc-alpha.c (alpha_adjust_symtab_relocs): Add ATTRIBUTE_UNUSED as needed. (emit_insn): Call dwarf2_emit_insn. (s_alpha_file): New. (s_alpha_loc): New. (s_alpha_coff_wrapper): Don't handle them. (md_pseudo_table): Update for .file and .loc. * config/tc-alpha.h (DWARF2_LINE_MIN_INSN_LENGTH): New. * config/tc-arm.c (output_inst): Update for dwarf2_emit_insn; don't protect with debug_type. * config/tc-hppa.c (md_assemble): Likewise. * config/tc-m68hc11.c (m68hc11_new_insn): Likewise. * config/tc-mn10300.c (md_assemble): Likewise. * config/tc-sh.c (md_assemble): Likewise. * config/tc-v850.c (md_assemble): Likewise. * config/tc-arm.c (arm_end_of_source): Remove. * config/tc-hppa.c (pa_end_of_source): Remove. * config/tc-m68hc11.c (m68hc11_end_of_source): Remove. * config/tc-mn10300.c (mn10300_finalize): Remove. * config/tc-sh.c (sh_finalize): Remove. * config/tc-v850.c (sh_finalize): Remove. * config/tc-arm.h (md_end): Remove. * config/tc-hppa.h (md_end): Remove. (DWARF2_LINE_MIN_INSN_LENGTH): New. * config/tc-m68hc11.h (md_end): Remove. * config/tc-mn10300.h (md_end): Remove. * config/tc-sh.h (md_end): Remove. * config/tc-v850.h (md_end): Remove. * config/tc-ia64.c (emit_one_bundle): Don't protect dwarf2 bits with debug_type. (md_assemble): Likewise. (ia64_end_of_source): Don't call dwarf2_finish.
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enum debug_info_type debug_type = DEBUG_UNSPECIFIED;
int use_gnu_debug_info_extensions = 0;
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/* Maximum level of macro nesting. */
int max_macro_nest = 100;
/* argv[0] */
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char * myname;
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/* 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;
/* Enable verbose mode. */
int verbose = 0;
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#ifdef BFD_ASSEMBLER
segT reg_section;
segT expr_section;
segT text_section;
segT data_section;
segT bss_section;
#endif
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/* Name of listing file. */
static char *listing_filename = NULL;
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static struct defsym_list *defsyms;
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static struct itbl_file_list *itbl_files;
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static long start_time;
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#ifdef USE_EMULATIONS
#define EMULATION_ENVIRON "AS_EMULATION"
extern struct emulation mipsbelf, mipslelf, mipself;
extern struct emulation mipsbecoff, mipslecoff, mipsecoff;
extern struct emulation i386coff, i386elf, i386aout;
extern struct emulation crisaout, criself;
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static struct emulation *const emulations[] = { EMULATIONS };
static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
static void
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select_emulation_mode (int argc, char **argv)
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{
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];
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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 *
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default_emul_bfd_name (void)
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{
abort ();
return NULL;
}
void
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common_emul_init (void)
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{
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
void
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print_version_id (void)
{
static int printed;
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if (printed)
return;
printed = 1;
#ifdef BFD_ASSEMBLER
fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"),
VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
#else
fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS);
#endif
fprintf (stderr, "\n");
}
static void
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show_usage (FILE * stream)
{
fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
fprintf (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 list to FILE (must be last sub-option)\n"));
fprintf (stream, _("\
-D produce assembler debugging messages\n"));
fprintf (stream, _("\
--defsym SYM=VAL define symbol SYM to given value\n"));
#ifdef USE_EMULATIONS
{
int i;
char *def_em;
fprintf (stream, "\
--em=[");
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)
def_em = DEFAULT_EMULATION;
fprintf (stream, _("\
emulate output (default %s)\n"), def_em);
}
#endif
#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
fprintf (stream, _("\
--execstack require executable stack for this object\n"));
fprintf (stream, _("\
--noexecstack don't require executable stack for this object\n"));
#endif
fprintf (stream, _("\
-f skip whitespace and comment preprocessing\n"));
fprintf (stream, _("\
--gstabs generate stabs debugging information\n"));
fprintf (stream, _("\
--gstabs+ generate stabs debug info with GNU extensions\n"));
fprintf (stream, _("\
--gdwarf2 generate DWARF2 debugging information\n"));
fprintf (stream, _("\
--help show this message and exit\n"));
fprintf (stream, _("\
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--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"));
fprintf (stream, _("\
-K warn when differences altered for long displacements\n"));
fprintf (stream, _("\
-L,--keep-locals keep local symbols (e.g. starting with `L')\n"));
fprintf (stream, _("\
-M,--mri assemble in MRI compatibility mode\n"));
fprintf (stream, _("\
--MD FILE write dependency information in FILE (default none)\n"));
fprintf (stream, _("\
-nocpp ignored\n"));
fprintf (stream, _("\
-o OBJFILE name the object-file output OBJFILE (default a.out)\n"));
fprintf (stream, _("\
-R fold data section into text section\n"));
fprintf (stream, _("\
--statistics print various measured statistics from execution\n"));
fprintf (stream, _("\
--strip-local-absolute strip local absolute symbols\n"));
fprintf (stream, _("\
--traditional-format Use same format as native assembler when possible\n"));
fprintf (stream, _("\
--version print assembler version number and exit\n"));
fprintf (stream, _("\
-W --no-warn suppress warnings\n"));
fprintf (stream, _("\
--warn don't suppress warnings\n"));
fprintf (stream, _("\
--fatal-warnings treat warnings as errors\n"));
fprintf (stream, _("\
--itbl INSTTBL extend instruction set to include instructions\n\
matching the specifications defined in file INSTTBL\n"));
fprintf (stream, _("\
-w ignored\n"));
fprintf (stream, _("\
-X ignored\n"));
fprintf (stream, _("\
-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"));
fprintf (stream, _("\
--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"));
fprintf (stream, _("\
--listing-rhs-width set the max width in characters of the lines from\n\
the source file\n"));
fprintf (stream, _("\
--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);
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fputc ('\n', stream);
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. */
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static void
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parse_args (int * pargc, char *** pargv)
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{
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int old_argc;
int new_argc;
char ** old_argv;
char ** new_argv;
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/* 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;
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static const char std_shortopts[] =
{
'-', 'J',
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#ifndef WORKING_DOT_WORD
/* -K is not meaningful if .word is not being hacked. */
'K',
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#endif
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'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'I', ':', 'o', ':',
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#ifndef VMS
/* -v takes an argument on VMS, so we don't make it a generic
option. */
'v',
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#endif
'w', 'X',
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/* New option for extending instruction set (see also --itbl below). */
't', ':',
'\0'
};
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struct option *longopts;
extern struct option md_longopts[];
extern size_t md_longopts_size;
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/* Codes used for the long options with no short synonyms. */
enum option_values
{
OPTION_HELP = OPTION_STD_BASE,
OPTION_NOCPP,
OPTION_STATISTICS,
OPTION_VERSION,
OPTION_DUMPCONFIG,
OPTION_VERBOSE,
OPTION_EMULATION,
OPTION_DEFSYM,
OPTION_INSTTBL,
OPTION_LISTING_LHS_WIDTH,
OPTION_LISTING_LHS_WIDTH2,
OPTION_LISTING_RHS_WIDTH,
OPTION_LISTING_CONT_LINES,
OPTION_DEPFILE,
OPTION_GSTABS,
OPTION_GSTABS_PLUS,
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OPTION_STRIP_LOCAL_ABSOLUTE,
OPTION_TRADITIONAL_FORMAT,
OPTION_GDWARF2,
OPTION_WARN,
OPTION_TARGET_HELP,
OPTION_EXECSTACK,
OPTION_NOEXECSTACK,
OPTION_WARN_FATAL
};
static const struct option std_longopts[] =
{
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{"help", no_argument, NULL, OPTION_HELP},
/* getopt allows abbreviations, so we do this to stop it from
treating -k as an abbreviation for --keep-locals. Some
ports use -k to enable PIC assembly. */
{"keep-locals", no_argument, NULL, 'L'},
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{"keep-locals", no_argument, NULL, 'L'},
{"mri", no_argument, NULL, 'M'},
{"nocpp", no_argument, NULL, OPTION_NOCPP},
{"statistics", no_argument, NULL, OPTION_STATISTICS},
{"version", no_argument, NULL, OPTION_VERSION},
{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG},
{"verbose", no_argument, NULL, OPTION_VERBOSE},
{"emulation", required_argument, NULL, OPTION_EMULATION},
{"defsym", required_argument, NULL, OPTION_DEFSYM},
/* 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},
{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH},
{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2},
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{"listing-rhs-width", required_argument, NULL, OPTION_LISTING_RHS_WIDTH},
{"listing-cont-lines", required_argument, NULL, OPTION_LISTING_CONT_LINES},
{"MD", required_argument, NULL, OPTION_DEPFILE},
{"gstabs", no_argument, NULL, OPTION_GSTABS},
{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS},
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{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE},
{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
{"gdwarf2", no_argument, NULL, OPTION_GDWARF2},
{"no-warn", no_argument, NULL, 'W'},
{"warn", no_argument, NULL, OPTION_WARN},
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{"target-help", no_argument, NULL, OPTION_TARGET_HELP},
#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
{"execstack", no_argument, NULL, OPTION_EXECSTACK},
{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK},
#endif
{"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. */
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};
/* Construct the option lists from the standard list and the target
dependent list. Include space for an extra NULL option and
always NULL terminate. */
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shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
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longopts = xmalloc (sizeof (std_longopts) + md_longopts_size + sizeof (struct option));
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memcpy (longopts, std_longopts, sizeof (std_longopts));
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memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size);
memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size,
0, sizeof (struct option));
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/* Make a local copy of the old argv. */
old_argc = *pargc;
old_argv = *pargv;
/* Initialize a new argv that contains no options. */
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new_argv = xmalloc (sizeof (char *) * (old_argc + 1));
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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 explicitly here before deciding we've gotten a bad argument. */
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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;
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else
#else
case 'v':
#endif
case OPTION_VERBOSE:
print_version_id ();
verbose = 1;
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break;
}
/* Fall through. */
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case '?':
exit (EXIT_FAILURE);
case 1: /* File name. */
if (!strcmp (optarg, "-"))
optarg = "";
new_argv[new_argc++] = optarg;
new_argv[new_argc] = NULL;
break;
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case OPTION_TARGET_HELP:
md_show_usage (stdout);
exit (EXIT_SUCCESS);
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case OPTION_HELP:
show_usage (stdout);
exit (EXIT_SUCCESS);
case OPTION_NOCPP:
break;
case OPTION_STATISTICS:
flag_print_statistics = 1;
break;
case OPTION_STRIP_LOCAL_ABSOLUTE:
flag_strip_local_absolute = 1;
break;
case OPTION_TRADITIONAL_FORMAT:
flag_traditional_format = 1;
break;
case OPTION_VERSION:
/* This output is intended to follow the GNU standards document. */
#ifdef BFD_ASSEMBLER
printf (_("GNU assembler %s\n"), BFD_VERSION_STRING);
#else
printf (_("GNU assembler %s\n"), VERSION);
#endif
printf (_("Copyright 2002 Free Software Foundation, Inc.\n"));
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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:
#ifdef USE_EMULATIONS
if (strcmp (optarg, this_emulation->name))
as_fatal (_("multiple emulation names specified"));
#else
as_fatal (_("emulations not handled in this configuration"));
#endif
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;
valueT i;
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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';
#ifdef BFD_ASSEMBLER
i = bfd_scan_vma (s, (const char **) NULL, 0);
#else
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i = strtol (s, (char **) NULL, 0);
#endif
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n = xmalloc (sizeof *n);
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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. */
1999-05-03 09:29:11 +02:00
struct itbl_file_list *n;
if (optarg == NULL)
{
as_warn (_("no file name following -t option"));
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break;
}
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n = xmalloc (sizeof * n);
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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. */
1999-05-03 09:29:11 +02:00
itbl_files->name = xstrdup (optarg);
if (itbl_parse (itbl_files->name) != 0)
as_fatal (_("failed to read instruction table %s\n"),
itbl_files->name);
1999-05-03 09:29:11 +02:00
}
break;
case OPTION_DEPFILE:
start_dependencies (optarg);
break;
case OPTION_GSTABS_PLUS:
use_gnu_debug_info_extensions = 1;
/* Fall through. */
1999-05-03 09:29:11 +02:00
case OPTION_GSTABS:
debug_type = DEBUG_STABS;
break;
case OPTION_GDWARF2:
debug_type = DEBUG_DWARF2;
break;
1999-05-03 09:29:11 +02:00
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;
case OPTION_LISTING_LHS_WIDTH:
listing_lhs_width = atoi (optarg);
1999-05-03 09:29:11 +02:00
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);
1999-05-03 09:29:11 +02:00
if (tmp > listing_lhs_width)
listing_lhs_width_second = tmp;
}
break;
case OPTION_LISTING_RHS_WIDTH:
listing_rhs_width = atoi (optarg);
1999-05-03 09:29:11 +02:00
break;
case OPTION_LISTING_CONT_LINES:
listing_lhs_cont_lines = atoi (optarg);
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break;
case 'M':
flag_mri = 1;
#ifdef TC_M68K
flag_m68k_mri = 1;
#endif
break;
case 'R':
flag_readonly_data_in_text = 1;
break;
case 'W':
flag_no_warnings = 1;
break;
case OPTION_WARN:
flag_no_warnings = 0;
flag_fatal_warnings = 0;
break;
case OPTION_WARN_FATAL:
flag_no_warnings = 0;
flag_fatal_warnings = 1;
break;
#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
case OPTION_EXECSTACK:
flag_execstack = 1;
flag_noexecstack = 0;
break;
case OPTION_NOEXECSTACK:
flag_noexecstack = 1;
flag_execstack = 0;
break;
#endif
1999-05-03 09:29:11 +02:00
case 'Z':
flag_always_generate_output = 1;
break;
case 'a':
if (optarg)
{
Add XCOFF64 support. bfd: * Makefile.am (coff64-rs6000.lo): New rule. * Makefile.in: Regenerate. * coff-rs6000.c (xcoff_mkobject, xcoff_copy_private_bfd_data, xcoff_is_local_label_name, xcoff_rtype2howto, xcoff_reloc_type_lookup, xcoff_slurp_armap, xcoff_archive_p, xcoff_read_ar_hdr, xcoff_openr_next_archived_file, xcoff_write_armap, xcoff_write_archive_contents): No longer static, and prefix with _bfd_. (NO_COFF_SYMBOLS): Define. (xcoff64_swap_sym_in, xcoff64_swap_sym_out, xcoff64_swap_aux_in, xcoff64_swap_aux_out): New functions; handle xcoff symbol tables internally. (MINUS_ONE): New macro. (xcoff_howto_tabl, xcoff_reloc_type_lookup): Add 64 bit POS relocation. (coff_SWAP_sym_in, coff_SWAP_sym_out, coff_SWAP_aux_in, coff_SWAP_aux_out): Map to the new functions. * coff64-rs6000.c: New file. * libcoff.h (bfd_coff_backend_data): Add new fields _bfd_coff_force_symnames_in_strings and _bfd_coff_debug_string_prefix_length. (bfd_coff_force_symnames_in_strings, bfd_coff_debug_string_prefix_length): New macros for above fields. * coffcode.h (coff_set_arch_mach_hook): Handle XCOFF64 magic. Set machine to 620 for XCOFF64. Use bfd_coff_swap_sym_in instead of using coff_swap_sym_in directly. (FORCE_SYMNAMES_IN_STRINGS): New macro, defined for XCOFF64. (coff_set_flags) Set magic for XCOFF64. (coff_compute_section_file_positions): Add symbol name length to string section length if bfd_coff_debug_string_prefix_length is true. (coff_write_object_contents): Don't do reloc overflow for XCOFF64. (coff_slurp_line_table): Use bfd_coff_swap_lineno_in instead of using coff_swap_lineno_in directly. (bfd_coff_backend_data): Add _bfd_coff_force_symnames_in_strings and _bfd_coff_debug_string_prefix_length fields. * coffgen.c (coff_fix_symbol_name, coff_write_symbols): Force symbol names into strings table when bfd_coff_force_symnames_in_strings is true. * coffswap.h (MAX_SCNHDR_NRELOC, MAX_SCNHDR_NLNNO, GET_RELOC_VADDR, SET_RELOC_VADDR): New macros. (coff_swap_reloc_in, coff_swap_reloc_out): Use above macros. (coff_swap_aux_in, coff_swap_aux_out): Remove RS6000COFF_C code. (coff_swap_aouthdr_in, coff_swap_aouthdr_out): Handle XCOFF64 changes within RS6000COFF_C specific code. (coff_swap_scnhdr_out): Use PUT_SCNHDR_NLNNO, PUT_SCNHDR_NRELOC, MAX_SCNHDR_NRELOC, and MAX_SCNHDR_NLNNO. * reloc.c (bfd_perform_relocation, bfd_install_relocation): Extend existing hack on target name. * xcofflink.c (XCOFF_XVECP): Extend existing hack on target name. * coff-tic54x.c (ticof): Keep up to date with new fields in bfd_coff_backend_data. * config.bfd: Add bfd_powerpc_64_arch to targ_arch and define targ_selvecs to include rs6000coff64_vec for rs6000. * configure.in: Add rs6000coff64_vec case. * cpu-powerpc.c: New bfd_arch_info_type. gas: * as.c (parse_args): Allow md_parse_option to override -a listing option. * config/obj-coff.c (add_lineno): Change type of offset parameter from "int" to "bfd_vma." * config/tc-ppc.c (md_pseudo_table): Add "llong" and "machine." (ppc_mach, ppc_subseg_align, ppc_target_format): New. (ppc_change_csect): Align correctly for XCOFF64. (ppc_machine): New function, which discards "ppc_machine" line. (ppc_tc): Cons for 8 when code is 64 bit. (md_apply_fix3): Don't check operand->insert. Handle 64 bit relocations. (md_parse_option): Handle -a64 and -a32. (ppc_xcoff64): New. * config/tc-ppc.h (TARGET_MACH): Define. (TARGET_FORMAT): Move to function. (SUB_SEGMENT_ALIGN): Use ppc_subseg_align. include: * include/coff/rs6k64.h: New file. opcodes: * configure.in: Add bfd_powerpc_64_arch. * disassemble.c (disassembler): Use print_insn_big_powerpc for 64 bit code.
2000-04-26 17:09:44 +02:00
if (md_parse_option (optc, optarg) != 0)
break;
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while (*optarg)
{
switch (*optarg)
{
case 'c':
listing |= LISTING_NOCOND;
break;
case 'd':
listing |= LISTING_NODEBUG;
break;
case 'h':
listing |= LISTING_HLL;
break;
case 'l':
listing |= LISTING_LISTING;
break;
case 'm':
listing |= LISTING_MACEXP;
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. */
1999-05-03 09:29:11 +02:00
flag_debug = 1;
break;
case 'f':
flag_no_comments = 1;
break;
case 'I':
{ /* Include file directory. */
1999-05-03 09:29:11 +02:00
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. */
1999-05-03 09:29:11 +02:00
break;
}
}
free (shortopts);
free (longopts);
*pargc = new_argc;
*pargv = new_argv;
#ifdef md_after_parse_args
md_after_parse_args ();
#endif
1999-05-03 09:29:11 +02:00
}
2003-10-04 14:40:12 +02:00
static void
dump_statistics (void)
{
#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
1999-05-03 09:29:11 +02:00
2003-10-04 14:40:12 +02:00
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
}
/* The interface between the macro code and gas expression handling. */
static int
macro_expr (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;
}
/* 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 (int argc, char ** argv)
{
int saw_a_file = 0;
#ifdef BFD_ASSEMBLER
flagword applicable;
#endif
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. */
{
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. */
#else /* BFD_ASSEMBLER. */
/* Create the standard sections, and those the assembler uses
internally. */
text_section = subseg_new (TEXT_SECTION_NAME, 0);
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. */
applicable = bfd_applicable_section_flags (stdoutput);
bfd_set_section_flags (stdoutput, text_section,
applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
| SEC_CODE | SEC_READONLY));
bfd_set_section_flags (stdoutput, data_section,
applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
| SEC_DATA));
bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
seg_info (bss_section)->bss = 1;
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);
#endif /* BFD_ASSEMBLER. */
subseg_set (text_section, 0);
/* This may add symbol table entries, which requires having an open BFD,
and sections already created, in BFD_ASSEMBLER mode. */
md_begin ();
#ifdef USING_CGEN
gas_cgen_begin ();
#endif
#ifdef obj_begin
obj_begin ();
#endif
/* Skip argv[0]. */
argv++;
argc--;
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 ("");
}
2001-09-22 11:23:31 +02:00
int
2003-10-04 14:40:12 +02:00
main (int argc, char ** argv)
1999-05-03 09:29:11 +02:00
{
int macro_alternate;
int macro_strip_at;
int keep_it;
start_time = get_run_time ();
#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
setlocale (LC_MESSAGES, "");
#endif
#if defined (HAVE_SETLOCALE)
setlocale (LC_CTYPE, "");
1999-05-03 09:29:11 +02:00
#endif
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (debug_memory)
chunksize = 64;
1999-05-03 09:29:11 +02:00
#ifdef HOST_SPECIAL_INIT
HOST_SPECIAL_INIT (argc, argv);
#endif
myname = argv[0];
xmalloc_set_program_name (myname);
START_PROGRESS (myname, 0);
#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
#define OBJ_DEFAULT_OUTPUT_FILE_NAME "a.out"
#endif
out_file_name = OBJ_DEFAULT_OUTPUT_FILE_NAME;
hex_init ();
#ifdef BFD_ASSEMBLER
bfd_init ();
bfd_set_error_program_name (myname);
#endif
#ifdef USE_EMULATIONS
select_emulation_mode (argc, argv);
#endif
PROGRESS (1);
symbol_begin ();
frag_init ();
subsegs_begin ();
parse_args (&argc, &argv);
1999-05-03 09:29:11 +02:00
read_begin ();
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);
PROGRESS (1);
#ifdef BFD_ASSEMBLER
output_file_create (out_file_name);
assert (stdoutput != 0);
#endif
#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);
/* Assemble it. */
perform_an_assembly_pass (argc, argv);
1999-05-03 09:29:11 +02:00
cond_finish_check (-1);
#ifdef md_end
md_end ();
#endif
#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
if ((flag_execstack || flag_noexecstack)
&& OUTPUT_FLAVOR == bfd_target_elf_flavour)
{
segT gnustack;
gnustack = subseg_new (".note.GNU-stack", 0);
bfd_set_section_flags (stdoutput, gnustack,
SEC_READONLY | (flag_execstack ? SEC_CODE : 0));
}
#endif
/* If we've been collecting dwarf2 .debug_line info, either for
2000-11-17 09:53:38 +01:00
assembly debugging or on behalf of the compiler, emit it now. */
dwarf2_finish ();
/* If we constructed dwarf2 .eh_frame info, either via .cfi
directives from the user or by the backend, emit it now. */
cfi_finish ();
1999-05-03 09:29:11 +02:00
if (seen_at_least_1_file ()
&& (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 ();
#ifndef NO_LISTING
listing_print (listing_filename);
#endif
2003-10-04 14:40:12 +02:00
#ifndef OBJ_VMS /* Does its own file handling. */
1999-05-03 09:29:11 +02:00
#ifndef BFD_ASSEMBLER
if (keep_it)
#endif
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 ());
1999-05-03 09:29:11 +02:00
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);
/* Only generate dependency file if assembler was successful. */
print_dependencies ();
xexit (EXIT_SUCCESS);
}