/* as.c - GAS main program.
Copyright 1987, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+ 2010, 2011, 2012
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)
+ the Free Software Foundation; either version 3, 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.
+ 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. */
+ Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
+ 02110-1301, USA. */
/* Main program for AS; a 32-bit assembler of GNU.
Understands command arguments.
Since no-one else says they will support them in future: I
don't support them now. */
-#include "ansidecl.h"
-
#define COMMON
#include "as.h"
#include "macro.h"
#include "dwarf2dbg.h"
#include "dw2gencfi.h"
-
-#ifdef BFD_ASSEMBLER
#include "bfdver.h"
-#endif
#ifdef HAVE_ITBL_CPU
#include "itbl-ops.h"
#else
-#define itbl_parse(itbl_file) 1
#define itbl_init()
#endif
#ifdef HAVE_SBRK
#ifdef NEED_DECLARATION_SBRK
-extern PTR sbrk ();
+extern void *sbrk ();
#endif
#endif
extern void gas_cgen_begin (void);
#endif
-/* 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
int max_macro_nest = 100;
/* argv[0] */
-char * myname;
+static char * myname;
/* The default obstack chunk size. If we set this to zero, the
obstack code will use whatever will fit in a 4096 byte block. */
/* Enable verbose mode. */
int verbose = 0;
-#ifdef BFD_ASSEMBLER
+/* Keep the output file. */
+int keep_it = 0;
+
segT reg_section;
segT expr_section;
segT text_section;
segT data_section;
segT bss_section;
-#endif
/* Name of listing file. */
static char *listing_filename = NULL;
static struct defsym_list *defsyms;
+#ifdef HAVE_ITBL_CPU
+/* 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;
+#endif
static long start_time;
return;
printed = 1;
-#ifdef BFD_ASSEMBLER
- fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s"),
+ fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"),
VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
-#else
- fprintf (stderr, _("GNU assembler version %s (%s)"), VERSION, TARGET_ALIAS);
-#endif
- fprintf (stderr, "\n");
}
static void
Sub-options [default hls]:\n\
c omit false conditionals\n\
d omit debugging directives\n\
+ g include general info\n\
h include high-level source\n\
l include assembly\n\
m include macro expansions\n\
fprintf (stream, _("\
--alternate initially turn on alternate macro syntax\n"));
+#ifdef HAVE_ZLIB_H
+ fprintf (stream, _("\
+ --compress-debug-sections\n\
+ compress DWARF debug sections using zlib\n"));
+ fprintf (stream, _("\
+ --nocompress-debug-sections\n\
+ don't compress DWARF debug sections\n"));
+#endif /* HAVE_ZLIB_H */
fprintf (stream, _("\
-D produce assembler debugging messages\n"));
fprintf (stream, _("\
+ --debug-prefix-map OLD=NEW\n\
+ map OLD to NEW in debug information\n"));
+ fprintf (stream, _("\
--defsym SYM=VAL define symbol SYM to given value\n"));
#ifdef USE_EMULATIONS
{
emulate output (default %s)\n"), def_em);
}
#endif
-#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
+#if 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"));
+ fprintf (stream, _("\
+ --size-check=[error|warning]\n\
+ ELF .size directive check (default --size-check=error)\n"));
#endif
fprintf (stream, _("\
-f skip whitespace and comment preprocessing\n"));
fprintf (stream, _("\
--gdwarf-2 generate DWARF2 debugging information\n"));
fprintf (stream, _("\
+ --hash-size=<value> set the hash table size close to <value>\n"));
+ fprintf (stream, _("\
--help show this message and exit\n"));
fprintf (stream, _("\
--target-help show target specific options\n"));
fprintf (stream, _("\
-R fold data section into text section\n"));
fprintf (stream, _("\
+ --reduce-memory-overheads \n\
+ prefer smaller memory use at the cost of longer\n\
+ assembly times\n"));
+ fprintf (stream, _("\
--statistics print various measured statistics from execution\n"));
fprintf (stream, _("\
--strip-local-absolute strip local absolute symbols\n"));
--warn don't suppress warnings\n"));
fprintf (stream, _("\
--fatal-warnings treat warnings as errors\n"));
+#ifdef HAVE_ITBL_CPU
fprintf (stream, _("\
--itbl INSTTBL extend instruction set to include instructions\n\
matching the specifications defined in file INSTTBL\n"));
+#endif
fprintf (stream, _("\
-w ignored\n"));
fprintf (stream, _("\
fprintf (stream, _("\
--listing-cont-lines set the maximum number of continuation lines used\n\
for the output data column of the listing\n"));
+ fprintf (stream, _("\
+ @FILE read options from FILE\n"));
md_show_usage (stream);
fputc ('\n', stream);
- fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
+
+ if (REPORT_BUGS_TO[0] && stream == stdout)
+ fprintf (stream, _("Report bugs to %s\n"), REPORT_BUGS_TO);
}
/* Since it is easy to do here we interpret the special arg "-"
'v',
#endif
'w', 'X',
+#ifdef HAVE_ITBL_CPU
/* New option for extending instruction set (see also --itbl below). */
't', ':',
+#endif
'\0'
};
struct option *longopts;
OPTION_DUMPCONFIG,
OPTION_VERBOSE,
OPTION_EMULATION,
+ OPTION_DEBUG_PREFIX_MAP,
OPTION_DEFSYM,
- OPTION_INSTTBL,
OPTION_LISTING_LHS_WIDTH,
OPTION_LISTING_LHS_WIDTH2,
OPTION_LISTING_RHS_WIDTH,
OPTION_TARGET_HELP,
OPTION_EXECSTACK,
OPTION_NOEXECSTACK,
+ OPTION_SIZE_CHECK,
OPTION_ALTERNATE,
- OPTION_WARN_FATAL
+ OPTION_AL,
+ OPTION_HASH_TABLE_SIZE,
+ OPTION_REDUCE_MEMORY_OVERHEADS,
+ OPTION_WARN_FATAL,
+ OPTION_COMPRESS_DEBUG,
+ OPTION_NOCOMPRESS_DEBUG
/* When you add options here, check that they do
not collide with OPTION_MD_BASE. See as.h. */
};
static const struct option std_longopts[] =
{
/* Note: commas are placed at the start of the line rather than
- the end of the preceeding line so that it is simpler to
+ the end of the preceding line so that it is simpler to
selectively add and remove lines from this list. */
{"alternate", no_argument, NULL, OPTION_ALTERNATE}
+ /* The entry for "a" is here to prevent getopt_long_only() from
+ considering that -a is an abbreviation for --alternate. This is
+ necessary because -a=<FILE> is a valid switch but getopt would
+ normally reject it since --alternate does not take an argument. */
+ ,{"a", optional_argument, NULL, 'a'}
+ /* Handle -al=<FILE>. */
+ ,{"al", optional_argument, NULL, OPTION_AL}
+ ,{"compress-debug-sections", no_argument, NULL, OPTION_COMPRESS_DEBUG}
+ ,{"nocompress-debug-sections", no_argument, NULL, OPTION_NOCOMPRESS_DEBUG}
+ ,{"debug-prefix-map", required_argument, NULL, OPTION_DEBUG_PREFIX_MAP}
,{"defsym", required_argument, NULL, OPTION_DEFSYM}
,{"dump-config", no_argument, NULL, OPTION_DUMPCONFIG}
,{"emulation", required_argument, NULL, OPTION_EMULATION}
-#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
+#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
,{"execstack", no_argument, NULL, OPTION_EXECSTACK}
,{"noexecstack", no_argument, NULL, OPTION_NOEXECSTACK}
+ ,{"size-check", required_argument, NULL, OPTION_SIZE_CHECK}
#endif
,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2}
,{"gen-debug", no_argument, NULL, 'g'}
,{"gstabs", no_argument, NULL, OPTION_GSTABS}
,{"gstabs+", no_argument, NULL, OPTION_GSTABS_PLUS}
+ ,{"hash-size", required_argument, NULL, OPTION_HASH_TABLE_SIZE}
,{"help", no_argument, NULL, OPTION_HELP}
+#ifdef HAVE_ITBL_CPU
/* 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}
+ ,{"itbl", required_argument, NULL, 't'}
+#endif
/* 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. */
,{"mri", no_argument, NULL, 'M'}
,{"nocpp", no_argument, NULL, OPTION_NOCPP}
,{"no-warn", no_argument, NULL, 'W'}
+ ,{"reduce-memory-overheads", no_argument, NULL, OPTION_REDUCE_MEMORY_OVERHEADS}
,{"statistics", no_argument, NULL, OPTION_STATISTICS}
,{"strip-local-absolute", no_argument, NULL, OPTION_STRIP_LOCAL_ABSOLUTE}
,{"version", no_argument, NULL, OPTION_VERSION}
dependent list. Include space for an extra NULL option and
always NULL terminate. */
shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
- longopts = xmalloc (sizeof (std_longopts) + md_longopts_size + sizeof (struct option));
+ longopts = (struct option *) xmalloc (sizeof (std_longopts)
+ + md_longopts_size + sizeof (struct option));
memcpy (longopts, std_longopts, sizeof (std_longopts));
memcpy (((char *) longopts) + sizeof (std_longopts), md_longopts, md_longopts_size);
memset (((char *) longopts) + sizeof (std_longopts) + md_longopts_size,
old_argv = *pargv;
/* Initialize a new argv that contains no options. */
- new_argv = xmalloc (sizeof (char *) * (old_argc + 1));
+ new_argv = (char **) xmalloc (sizeof (char *) * (old_argc + 1));
new_argv[0] = old_argv[0];
new_argc = 1;
new_argv[new_argc] = NULL;
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"));
+ printf (_("Copyright 2012 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"));
+the GNU General Public License version 3 or later.\n\
+This program has absolutely no warranty.\n"));
printf (_("This assembler was configured for a target of `%s'.\n"),
TARGET_ALIAS);
exit (EXIT_SUCCESS);
#endif
exit (EXIT_SUCCESS);
+ case OPTION_COMPRESS_DEBUG:
+#ifdef HAVE_ZLIB_H
+ flag_compress_debug = 1;
+#else
+ as_warn (_("cannot compress debug sections (zlib not installed)"));
+#endif /* HAVE_ZLIB_H */
+ break;
+
+ case OPTION_NOCOMPRESS_DEBUG:
+ flag_compress_debug = 0;
+ break;
+
+ case OPTION_DEBUG_PREFIX_MAP:
+ add_debug_prefix_map (optarg);
+ break;
+
case OPTION_DEFSYM:
{
char *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
- i = strtol (s, (char **) NULL, 0);
-#endif
- n = xmalloc (sizeof *n);
+ n = (struct defsym_list *) xmalloc (sizeof *n);
n->next = defsyms;
n->name = optarg;
n->value = i;
}
break;
- case OPTION_INSTTBL:
+#ifdef HAVE_ITBL_CPU
case 't':
{
/* optarg is the name of the file containing the instruction
itbl_files->name);
}
break;
+#endif
case OPTION_DEPFILE:
start_dependencies (optarg);
flag_fatal_warnings = 1;
break;
-#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
+#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
case OPTION_EXECSTACK:
flag_execstack = 1;
flag_noexecstack = 0;
flag_noexecstack = 1;
flag_execstack = 0;
break;
+
+ case OPTION_SIZE_CHECK:
+ if (strcasecmp (optarg, "error") == 0)
+ flag_size_check = size_check_error;
+ else if (strcasecmp (optarg, "warning") == 0)
+ flag_size_check = size_check_warning;
+ else
+ as_fatal (_("Invalid --size-check= option: `%s'"), optarg);
+ break;
#endif
case 'Z':
flag_always_generate_output = 1;
break;
+ case OPTION_AL:
+ listing |= LISTING_LISTING;
+ if (optarg)
+ listing_filename = xstrdup (optarg);
+ break;
+
case OPTION_ALTERNATE:
optarg = old_argv [optind - 1];
while (* optarg == '-')
case 'a':
if (optarg)
{
+ if (optarg != old_argv[optind] && optarg[-1] == '=')
+ --optarg;
+
if (md_parse_option (optc, optarg) != 0)
break;
case 'd':
listing |= LISTING_NODEBUG;
break;
+ case 'g':
+ listing |= LISTING_GENERAL;
+ break;
case 'h':
listing |= LISTING_HLL;
break;
case 'X':
/* -X means treat warnings as errors. */
break;
+
+ case OPTION_REDUCE_MEMORY_OVERHEADS:
+ /* The only change we make at the moment is to reduce
+ the size of the hash tables that we use. */
+ set_gas_hash_table_size (4051);
+ break;
+
+ case OPTION_HASH_TABLE_SIZE:
+ {
+ unsigned long new_size;
+
+ new_size = strtoul (optarg, NULL, 0);
+ if (new_size)
+ set_gas_hash_table_size (new_size);
+ else
+ as_fatal (_("--hash-size needs a numeric argument"));
+ break;
+ }
}
}
#endif
}
+static void
+close_output_file (void)
+{
+ output_file_close (out_file_name);
+ if (!keep_it)
+ unlink_if_ordinary (out_file_name);
+}
+
/* The interface between the macro code and gas expression handling. */
-static int
-macro_expr (const char *emsg, int idx, sb *in, int *val)
+static size_t
+macro_expr (const char *emsg, size_t idx, sb *in, offsetT *val)
{
char *hold;
expressionS ex;
hold = input_line_pointer;
input_line_pointer = in->ptr + idx;
- expression (&ex);
+ expression_and_evaluate (&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;
+ *val = ex.X_add_number;
return idx;
}
perform_an_assembly_pass (int argc, char ** argv)
{
int saw_a_file = 0;
-#ifdef BFD_ASSEMBLER
+#ifndef OBJ_MACH_O
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. */
+#ifndef OBJ_MACH_O
/* Create the standard sections, and those the assembler uses
internally. */
text_section = subseg_new (TEXT_SECTION_NAME, 0);
| SEC_DATA));
bfd_set_section_flags (stdoutput, bss_section, applicable & SEC_ALLOC);
seg_info (bss_section)->bss = 1;
+#endif
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. */
-
+#ifndef OBJ_MACH_O
subseg_set (text_section, 0);
+#endif
/* This may add symbol table entries, which requires having an open BFD,
- and sections already created, in BFD_ASSEMBLER mode. */
+ and sections already created. */
md_begin ();
#ifdef USING_CGEN
read_a_source_file ("");
}
\f
+#ifdef OBJ_ELF
+static void
+create_obj_attrs_section (void)
+{
+ segT s;
+ char *p;
+ offsetT size;
+ const char *name;
+
+ size = bfd_elf_obj_attr_size (stdoutput);
+ if (size)
+ {
+ name = get_elf_backend_data (stdoutput)->obj_attrs_section;
+ if (!name)
+ name = ".gnu.attributes";
+ s = subseg_new (name, 0);
+ elf_section_type (s)
+ = get_elf_backend_data (stdoutput)->obj_attrs_section_type;
+ bfd_set_section_flags (stdoutput, s, SEC_READONLY | SEC_DATA);
+ frag_now_fix ();
+ p = frag_more (size);
+ bfd_elf_set_obj_attr_contents (stdoutput, (bfd_byte *)p, size);
+ }
+}
+#endif
+\f
int
main (int argc, char ** argv)
{
+ char ** argv_orig = argv;
+
int macro_strip_at;
- int keep_it;
start_time = get_run_time ();
myname = argv[0];
xmalloc_set_program_name (myname);
+ expandargv (&argc, &argv);
+
START_PROGRESS (myname, 0);
#ifndef OBJ_DEFAULT_OUTPUT_FILE_NAME
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);
+ /* Call parse_args before any of the init/begin functions
+ so that switches like --hash-size can be honored. */
+ parse_args (&argc, &argv);
symbol_begin ();
frag_init ();
subsegs_begin ();
- parse_args (&argc, &argv);
read_begin ();
input_scrub_begin ();
expr_begin ();
+ /* It has to be called after dump_statistics (). */
+ xatexit (close_output_file);
+
if (flag_print_statistics)
xatexit (dump_statistics);
#ifdef TC_I960
macro_strip_at = flag_mri;
#endif
-#ifdef TC_A29K
- /* For compatibility with the AMD 29K family macro assembler
- specification. */
- flag_macro_alternate = 1;
- macro_strip_at = 1;
-#endif
macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr);
PROGRESS (1);
-#ifdef BFD_ASSEMBLER
output_file_create (out_file_name);
- assert (stdoutput != 0);
-#endif
+ gas_assert (stdoutput != 0);
+
+ dot_symbol_init ();
#ifdef tc_init_after_args
tc_init_after_args ();
itbl_init ();
+ dwarf2_init ();
+
+ local_symbol_make (".gasversion.", absolute_section,
+ BFD_VERSION / 10000UL, &predefined_address_frag);
+
/* Now that we have fully initialized, and have created the output
file, define any symbols requested by --defsym command line
arguments. */
sym = symbol_new (defsyms->name, absolute_section, defsyms->value,
&zero_address_frag);
+ /* Make symbols defined on the command line volatile, so that they
+ can be redefined inside a source file. This makes this assembler's
+ behaviour compatible with earlier versions, but it may not be
+ completely intuitive. */
+ S_SET_VOLATILE (sym);
symbol_table_insert (sym);
next = defsyms->next;
free (defsyms);
md_end ();
#endif
-#if defined BFD_ASSEMBLER && (defined OBJ_ELF || defined OBJ_MAYBE_ELF)
+#ifdef OBJ_ELF
+ if (IS_ELF)
+ create_obj_attrs_section ();
+#endif
+
+#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
if ((flag_execstack || flag_noexecstack)
&& OUTPUT_FLAVOR == bfd_target_elf_flavour)
{
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
+ fflush (stderr);
-#ifndef OBJ_VMS /* Does its own file handling. */
-#ifndef BFD_ASSEMBLER
- if (keep_it)
-#endif
- output_file_close (out_file_name);
+#ifndef NO_LISTING
+ listing_print (listing_filename, argv_orig);
#endif
if (flag_fatal_warnings && had_warnings () > 0 && had_errors () == 0)
if (had_errors () > 0 && ! flag_always_generate_output)
keep_it = 0;
- if (!keep_it)
- unlink (out_file_name);
-
input_scrub_end ();
END_PROGRESS (myname);
projects / deliverable / binutils-gdb.git / blobdiff