0ac2b354ee
The flag controlling the default DWARF CIE version to produce now starts with the value -1. This can be modified with the command line flag as before, but after command line flag processing, in md_after_parse_args targets can, if the global still has the value -1, override this value. This gives a target specific default. If a CIE version is not select either by command line flag, or a target specific default, then some new code in dwarf2_init now select a global default. This remains as version 1 to match previous behaviour. This RISC-V has a target specific default of version provided, this make the return column uleb128, which means we can use all DWARF registers include CSRs. I chose to switch to version 3 rather than version 4 as this is most similar to the global default (version 1). Switching to version 4 adds additional columns to the CIE header. gas/ChangeLog: * as.c (flag_dwarf_cie_version): Change initial value to -1, and update comment. * config/tc-riscv.c (riscv_after_parse_args): Set flag_dwarf_cie_version if it has not already been set. * dwarf2dbg.c (dwarf2_init): Initialise flag_dwarf_cie_version if needed. * testsuite/gas/riscv/default-cie-version.d: New file. * testsuite/gas/riscv/default-cie-version.s: New file. ld/ChangeLog: * testsuite/ld-elf/eh5.d: Accept version 3 DWARF CIE. Change-Id: Ibbfe8f0979fba480bf0a359978b09d2b3055555e
1451 lines
40 KiB
C
1451 lines
40 KiB
C
/* as.c - GAS main program.
|
||
Copyright (C) 1987-2019 Free Software Foundation, Inc.
|
||
|
||
This file is part of GAS, the GNU Assembler.
|
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|
||
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 3, or (at your option)
|
||
any later version.
|
||
|
||
GAS is distributed in the hope that it will be useful, but WITHOUT
|
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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, 51 Franklin Street - Fifth Floor, Boston, MA
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02110-1301, USA. */
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|
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/* Main program for AS; a 32-bit assembler of GNU.
|
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Understands command arguments.
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Has a few routines that don't fit in other modules because they
|
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are shared.
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|
||
bugs
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: initialisers
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Since no-one else says they will support them in future: I
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don't support them now. */
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|
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#define COMMON
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/* Disable code to set FAKE_LABEL_NAME in obj-multi.h, to avoid circular
|
||
reference. */
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#define INITIALIZING_EMULS
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||
#include "as.h"
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#include "subsegs.h"
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#include "output-file.h"
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#include "sb.h"
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#include "macro.h"
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#include "dwarf2dbg.h"
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#include "dw2gencfi.h"
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#include "bfdver.h"
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#include "write.h"
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|
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#ifdef HAVE_ITBL_CPU
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#include "itbl-ops.h"
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#else
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#define itbl_init()
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#endif
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#ifdef USING_CGEN
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/* Perform any cgen specific initialisation for gas. */
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extern void gas_cgen_begin (void);
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#endif
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||
/* We build a list of defsyms as we read the options, and then define
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them after we have initialized everything. */
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struct defsym_list
|
||
{
|
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struct defsym_list *next;
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char *name;
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valueT value;
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};
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/* True if a listing is wanted. */
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int listing;
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|
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/* Type of debugging to generate. */
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enum debug_info_type debug_type = DEBUG_UNSPECIFIED;
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int use_gnu_debug_info_extensions = 0;
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|
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#ifndef MD_DEBUG_FORMAT_SELECTOR
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#define MD_DEBUG_FORMAT_SELECTOR NULL
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#endif
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static enum debug_info_type (*md_debug_format_selector) (int *) = MD_DEBUG_FORMAT_SELECTOR;
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|
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/* Maximum level of macro nesting. */
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int max_macro_nest = 100;
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/* argv[0] */
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static char * myname;
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/* The default obstack chunk size. If we set this to zero, the
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obstack code will use whatever will fit in a 4096 byte block. */
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int chunksize = 0;
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/* To monitor memory allocation more effectively, make this non-zero.
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Then the chunk sizes for gas and bfd will be reduced. */
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int debug_memory = 0;
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|
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/* Enable verbose mode. */
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int verbose = 0;
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|
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/* Which version of DWARF CIE to produce. This default value of -1
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indicates that this value has not been set yet, a default value is
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provided in dwarf2_init. A different value can also be supplied by the
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command line flag --gdwarf-cie-version, or by a target in
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MD_AFTER_PARSE_ARGS. */
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int flag_dwarf_cie_version = -1;
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#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
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int flag_use_elf_stt_common = DEFAULT_GENERATE_ELF_STT_COMMON;
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bfd_boolean flag_generate_build_notes = DEFAULT_GENERATE_BUILD_NOTES;
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#endif
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/* Keep the output file. */
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static int keep_it = 0;
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segT reg_section;
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segT expr_section;
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segT text_section;
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segT data_section;
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segT bss_section;
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/* Name of listing file. */
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static char *listing_filename = NULL;
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static struct defsym_list *defsyms;
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|
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#ifdef HAVE_ITBL_CPU
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/* Keep a record of the itbl files we read in. */
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struct itbl_file_list
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{
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struct itbl_file_list *next;
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char *name;
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};
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static struct itbl_file_list *itbl_files;
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#endif
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static long start_time;
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static int flag_macro_alternate;
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#ifdef USE_EMULATIONS
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#define EMULATION_ENVIRON "AS_EMULATION"
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extern struct emulation mipsbelf, mipslelf, mipself;
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extern struct emulation i386coff, i386elf, i386aout;
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extern struct emulation crisaout, criself;
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static struct emulation *const emulations[] = { EMULATIONS };
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static const int n_emulations = sizeof (emulations) / sizeof (emulations[0]);
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static void
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select_emulation_mode (int argc, char **argv)
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{
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int i;
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char *p;
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const char *em = NULL;
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for (i = 1; i < argc; i++)
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if (!strncmp ("--em", argv[i], 4))
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break;
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if (i == argc)
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goto do_default;
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p = strchr (argv[i], '=');
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if (p)
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p++;
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else
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p = argv[i + 1];
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if (!p || !*p)
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as_fatal (_("missing emulation mode name"));
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em = p;
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do_default:
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if (em == 0)
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em = getenv (EMULATION_ENVIRON);
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if (em == 0)
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em = DEFAULT_EMULATION;
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if (em)
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{
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for (i = 0; i < n_emulations; i++)
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if (!strcmp (emulations[i]->name, em))
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break;
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if (i == n_emulations)
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as_fatal (_("unrecognized emulation name `%s'"), em);
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this_emulation = emulations[i];
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}
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else
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this_emulation = emulations[0];
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this_emulation->init ();
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}
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const char *
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default_emul_bfd_name (void)
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{
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abort ();
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return NULL;
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}
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void
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common_emul_init (void)
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{
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this_format = this_emulation->format;
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if (this_emulation->leading_underscore == 2)
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this_emulation->leading_underscore = this_format->dfl_leading_underscore;
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if (this_emulation->default_endian != 2)
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target_big_endian = this_emulation->default_endian;
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if (this_emulation->fake_label_name == 0)
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{
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if (this_emulation->leading_underscore)
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this_emulation->fake_label_name = FAKE_LABEL_NAME;
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else
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/* What other parameters should we test? */
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this_emulation->fake_label_name = "." FAKE_LABEL_NAME;
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}
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}
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#endif
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void
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print_version_id (void)
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{
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static int printed;
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if (printed)
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return;
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printed = 1;
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fprintf (stderr, _("GNU assembler version %s (%s) using BFD version %s\n"),
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VERSION, TARGET_ALIAS, BFD_VERSION_STRING);
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}
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#ifdef DEFAULT_FLAG_COMPRESS_DEBUG
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enum compressed_debug_section_type flag_compress_debug
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= COMPRESS_DEBUG_GABI_ZLIB;
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#endif
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static void
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show_usage (FILE * stream)
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{
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fprintf (stream, _("Usage: %s [option...] [asmfile...]\n"), myname);
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fprintf (stream, _("\
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Options:\n\
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-a[sub-option...] turn on listings\n\
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Sub-options [default hls]:\n\
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c omit false conditionals\n\
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d omit debugging directives\n\
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g include general info\n\
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h include high-level source\n\
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l include assembly\n\
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m include macro expansions\n\
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n omit forms processing\n\
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s include symbols\n\
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=FILE list to FILE (must be last sub-option)\n"));
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fprintf (stream, _("\
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--alternate initially turn on alternate macro syntax\n"));
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#ifdef DEFAULT_FLAG_COMPRESS_DEBUG
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fprintf (stream, _("\
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--compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\
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compress DWARF debug sections using zlib [default]\n"));
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fprintf (stream, _("\
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--nocompress-debug-sections\n\
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don't compress DWARF debug sections\n"));
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#else
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fprintf (stream, _("\
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--compress-debug-sections[={none|zlib|zlib-gnu|zlib-gabi}]\n\
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compress DWARF debug sections using zlib\n"));
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fprintf (stream, _("\
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--nocompress-debug-sections\n\
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don't compress DWARF debug sections [default]\n"));
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#endif
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fprintf (stream, _("\
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-D produce assembler debugging messages\n"));
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fprintf (stream, _("\
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--debug-prefix-map OLD=NEW\n\
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map OLD to NEW in debug information\n"));
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fprintf (stream, _("\
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--defsym SYM=VAL define symbol SYM to given value\n"));
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#ifdef USE_EMULATIONS
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{
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int i;
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const char *def_em;
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fprintf (stream, "\
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--em=[");
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for (i = 0; i < n_emulations - 1; i++)
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fprintf (stream, "%s | ", emulations[i]->name);
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fprintf (stream, "%s]\n", emulations[i]->name);
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def_em = getenv (EMULATION_ENVIRON);
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if (!def_em)
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def_em = DEFAULT_EMULATION;
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fprintf (stream, _("\
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emulate output (default %s)\n"), def_em);
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}
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#endif
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#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
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fprintf (stream, _("\
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--execstack require executable stack for this object\n"));
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fprintf (stream, _("\
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--noexecstack don't require executable stack for this object\n"));
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||
fprintf (stream, _("\
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--size-check=[error|warning]\n\
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ELF .size directive check (default --size-check=error)\n"));
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fprintf (stream, _("\
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--elf-stt-common=[no|yes] "));
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if (DEFAULT_GENERATE_ELF_STT_COMMON)
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fprintf (stream, _("(default: yes)\n"));
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else
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fprintf (stream, _("(default: no)\n"));
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||
fprintf (stream, _("\
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generate ELF common symbols with STT_COMMON type\n"));
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||
fprintf (stream, _("\
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--sectname-subst enable section name substitution sequences\n"));
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||
|
||
fprintf (stream, _("\
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--generate-missing-build-notes=[no|yes] "));
|
||
#if DEFAULT_GENERATE_BUILD_NOTES
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fprintf (stream, _("(default: yes)\n"));
|
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#else
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fprintf (stream, _("(default: no)\n"));
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||
#endif
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||
fprintf (stream, _("\
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generate GNU Build notes if none are present in the input\n"));
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||
#endif /* OBJ_ELF */
|
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|
||
fprintf (stream, _("\
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-f skip whitespace and comment preprocessing\n"));
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||
fprintf (stream, _("\
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||
-g --gen-debug generate debugging information\n"));
|
||
fprintf (stream, _("\
|
||
--gstabs generate STABS debugging information\n"));
|
||
fprintf (stream, _("\
|
||
--gstabs+ generate STABS debug info with GNU extensions\n"));
|
||
fprintf (stream, _("\
|
||
--gdwarf-2 generate DWARF2 debugging information\n"));
|
||
fprintf (stream, _("\
|
||
--gdwarf-sections generate per-function section names for DWARF line 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, _("\
|
||
-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, _("\
|
||
-no-pad-sections do not pad the end of sections to alignment boundaries\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, _("\
|
||
--reduce-memory-overheads \n\
|
||
prefer smaller memory use at the cost of longer\n\
|
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assembly times\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"));
|
||
#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, _("\
|
||
-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"));
|
||
fprintf (stream, _("\
|
||
@FILE read options from FILE\n"));
|
||
|
||
md_show_usage (stream);
|
||
|
||
fputc ('\n', stream);
|
||
|
||
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 "-"
|
||
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. */
|
||
|
||
static void
|
||
parse_args (int * pargc, char *** pargv)
|
||
{
|
||
int old_argc;
|
||
int new_argc;
|
||
char ** old_argv;
|
||
char ** 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
|
||
'L', 'M', 'R', 'W', 'Z', 'a', ':', ':', 'D', 'f', 'g', ':',':', 'I', ':', 'o', ':',
|
||
#ifndef VMS
|
||
/* -v takes an argument on VMS, so we don't make it a generic
|
||
option. */
|
||
'v',
|
||
#endif
|
||
'w', 'X',
|
||
#ifdef HAVE_ITBL_CPU
|
||
/* New option for extending instruction set (see also --itbl below). */
|
||
't', ':',
|
||
#endif
|
||
'\0'
|
||
};
|
||
struct option *longopts;
|
||
extern struct option md_longopts[];
|
||
extern size_t md_longopts_size;
|
||
/* 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_DEBUG_PREFIX_MAP,
|
||
OPTION_DEFSYM,
|
||
OPTION_LISTING_LHS_WIDTH,
|
||
OPTION_LISTING_LHS_WIDTH2,
|
||
OPTION_LISTING_RHS_WIDTH,
|
||
OPTION_LISTING_CONT_LINES,
|
||
OPTION_DEPFILE,
|
||
OPTION_GSTABS,
|
||
OPTION_GSTABS_PLUS,
|
||
OPTION_GDWARF2,
|
||
OPTION_GDWARF_SECTIONS,
|
||
OPTION_GDWARF_CIE_VERSION,
|
||
OPTION_STRIP_LOCAL_ABSOLUTE,
|
||
OPTION_TRADITIONAL_FORMAT,
|
||
OPTION_WARN,
|
||
OPTION_TARGET_HELP,
|
||
OPTION_EXECSTACK,
|
||
OPTION_NOEXECSTACK,
|
||
OPTION_SIZE_CHECK,
|
||
OPTION_ELF_STT_COMMON,
|
||
OPTION_ELF_BUILD_NOTES,
|
||
OPTION_SECTNAME_SUBST,
|
||
OPTION_ALTERNATE,
|
||
OPTION_AL,
|
||
OPTION_HASH_TABLE_SIZE,
|
||
OPTION_REDUCE_MEMORY_OVERHEADS,
|
||
OPTION_WARN_FATAL,
|
||
OPTION_COMPRESS_DEBUG,
|
||
OPTION_NOCOMPRESS_DEBUG,
|
||
OPTION_NO_PAD_SECTIONS /* = STD_BASE + 40 */
|
||
/* 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 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", optional_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 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}
|
||
,{"elf-stt-common", required_argument, NULL, OPTION_ELF_STT_COMMON}
|
||
,{"sectname-subst", no_argument, NULL, OPTION_SECTNAME_SUBST}
|
||
,{"generate-missing-build-notes", required_argument, NULL, OPTION_ELF_BUILD_NOTES}
|
||
#endif
|
||
,{"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL}
|
||
,{"gdwarf-2", no_argument, NULL, OPTION_GDWARF2}
|
||
/* GCC uses --gdwarf-2 but GAS uses to use --gdwarf2,
|
||
so we keep it here for backwards compatibility. */
|
||
,{"gdwarf2", no_argument, NULL, OPTION_GDWARF2}
|
||
,{"gdwarf-sections", no_argument, NULL, OPTION_GDWARF_SECTIONS}
|
||
,{"gdwarf-cie-version", required_argument, NULL, OPTION_GDWARF_CIE_VERSION}
|
||
,{"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, '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. */
|
||
,{"keep-locals", no_argument, NULL, 'L'}
|
||
,{"keep-locals", no_argument, NULL, 'L'}
|
||
,{"listing-lhs-width", required_argument, NULL, OPTION_LISTING_LHS_WIDTH}
|
||
,{"listing-lhs-width2", required_argument, NULL, OPTION_LISTING_LHS_WIDTH2}
|
||
,{"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}
|
||
,{"mri", no_argument, NULL, 'M'}
|
||
,{"nocpp", no_argument, NULL, OPTION_NOCPP}
|
||
,{"no-pad-sections", no_argument, NULL, OPTION_NO_PAD_SECTIONS}
|
||
,{"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}
|
||
,{"verbose", no_argument, NULL, OPTION_VERBOSE}
|
||
,{"target-help", no_argument, NULL, OPTION_TARGET_HELP}
|
||
,{"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT}
|
||
,{"warn", no_argument, NULL, OPTION_WARN}
|
||
};
|
||
|
||
/* Construct the option lists from the standard list and the target
|
||
dependent list. Include space for an extra NULL option and
|
||
always NULL terminate. */
|
||
shortopts = concat (std_shortopts, md_shortopts, (char *) NULL);
|
||
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,
|
||
0, sizeof (struct option));
|
||
|
||
/* Make a local copy of the old argv. */
|
||
old_argc = *pargc;
|
||
old_argv = *pargv;
|
||
|
||
/* Initialize a new argv that contains no options. */
|
||
new_argv = XNEWVEC (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 explicitly 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 ();
|
||
verbose = 1;
|
||
break;
|
||
}
|
||
else
|
||
as_bad (_("unrecognized option -%c%s"), optc, optarg ? optarg : "");
|
||
/* Fall through. */
|
||
|
||
case '?':
|
||
exit (EXIT_FAILURE);
|
||
|
||
case 1: /* File name. */
|
||
if (!strcmp (optarg, "-"))
|
||
optarg = (char *) "";
|
||
new_argv[new_argc++] = optarg;
|
||
new_argv[new_argc] = NULL;
|
||
break;
|
||
|
||
case OPTION_TARGET_HELP:
|
||
md_show_usage (stdout);
|
||
exit (EXIT_SUCCESS);
|
||
|
||
case OPTION_HELP:
|
||
show_usage (stdout);
|
||
exit (EXIT_SUCCESS);
|
||
|
||
case OPTION_NOCPP:
|
||
break;
|
||
|
||
case OPTION_NO_PAD_SECTIONS:
|
||
do_not_pad_sections_to_alignment = 1;
|
||
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. */
|
||
printf (_("GNU assembler %s\n"), BFD_VERSION_STRING);
|
||
printf (_("Copyright (C) 2019 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 version 3 or later.\n\
|
||
This program has absolutely no warranty.\n"));
|
||
#ifdef TARGET_WITH_CPU
|
||
printf (_("This assembler was configured for a target of `%s' "
|
||
"and default,\ncpu type `%s'.\n"),
|
||
TARGET_ALIAS, TARGET_WITH_CPU);
|
||
#else
|
||
printf (_("This assembler was configured for a target of `%s'.\n"),
|
||
TARGET_ALIAS);
|
||
#endif
|
||
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_COMPRESS_DEBUG:
|
||
if (optarg)
|
||
{
|
||
#if defined OBJ_ELF || defined OBJ_MAYBE_ELF
|
||
if (strcasecmp (optarg, "none") == 0)
|
||
flag_compress_debug = COMPRESS_DEBUG_NONE;
|
||
else if (strcasecmp (optarg, "zlib") == 0)
|
||
flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
|
||
else if (strcasecmp (optarg, "zlib-gnu") == 0)
|
||
flag_compress_debug = COMPRESS_DEBUG_GNU_ZLIB;
|
||
else if (strcasecmp (optarg, "zlib-gabi") == 0)
|
||
flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
|
||
else
|
||
as_fatal (_("Invalid --compress-debug-sections option: `%s'"),
|
||
optarg);
|
||
#else
|
||
as_fatal (_("--compress-debug-sections=%s is unsupported"),
|
||
optarg);
|
||
#endif
|
||
}
|
||
else
|
||
flag_compress_debug = COMPRESS_DEBUG_GABI_ZLIB;
|
||
break;
|
||
|
||
case OPTION_NOCOMPRESS_DEBUG:
|
||
flag_compress_debug = COMPRESS_DEBUG_NONE;
|
||
break;
|
||
|
||
case OPTION_DEBUG_PREFIX_MAP:
|
||
add_debug_prefix_map (optarg);
|
||
break;
|
||
|
||
case OPTION_DEFSYM:
|
||
{
|
||
char *s;
|
||
valueT 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 = bfd_scan_vma (s, (const char **) NULL, 0);
|
||
n = XNEW (struct defsym_list);
|
||
n->next = defsyms;
|
||
n->name = optarg;
|
||
n->value = i;
|
||
defsyms = n;
|
||
}
|
||
break;
|
||
|
||
#ifdef HAVE_ITBL_CPU
|
||
case 't':
|
||
{
|
||
/* optarg is the name of the file containing the instruction
|
||
formats, opcodes, register names, etc. */
|
||
struct itbl_file_list *n;
|
||
|
||
if (optarg == NULL)
|
||
{
|
||
as_warn (_("no file name following -t option"));
|
||
break;
|
||
}
|
||
|
||
n = XNEW (struct itbl_file_list);
|
||
n->next = itbl_files;
|
||
n->name = optarg;
|
||
itbl_files = n;
|
||
|
||
/* Parse the file and add the new instructions to our internal
|
||
table. If multiple instruction tables are specified, the
|
||
information from this table gets appended onto the existing
|
||
internal table. */
|
||
itbl_files->name = xstrdup (optarg);
|
||
if (itbl_parse (itbl_files->name) != 0)
|
||
as_fatal (_("failed to read instruction table %s\n"),
|
||
itbl_files->name);
|
||
}
|
||
break;
|
||
#endif
|
||
|
||
case OPTION_DEPFILE:
|
||
start_dependencies (optarg);
|
||
break;
|
||
|
||
case 'g':
|
||
/* Some backends, eg Alpha and Mips, use the -g switch for their
|
||
own purposes. So we check here for an explicit -g and allow
|
||
the backend to decide if it wants to process it. */
|
||
if ( old_argv[optind - 1][1] == 'g'
|
||
&& md_parse_option (optc, optarg))
|
||
continue;
|
||
|
||
if (md_debug_format_selector)
|
||
debug_type = md_debug_format_selector (& use_gnu_debug_info_extensions);
|
||
else if (IS_ELF)
|
||
debug_type = DEBUG_DWARF2;
|
||
else
|
||
debug_type = DEBUG_STABS;
|
||
break;
|
||
|
||
case OPTION_GSTABS_PLUS:
|
||
use_gnu_debug_info_extensions = 1;
|
||
/* Fall through. */
|
||
case OPTION_GSTABS:
|
||
debug_type = DEBUG_STABS;
|
||
break;
|
||
|
||
case OPTION_GDWARF2:
|
||
debug_type = DEBUG_DWARF2;
|
||
break;
|
||
|
||
case OPTION_GDWARF_SECTIONS:
|
||
flag_dwarf_sections = TRUE;
|
||
break;
|
||
|
||
case OPTION_GDWARF_CIE_VERSION:
|
||
flag_dwarf_cie_version = atoi (optarg);
|
||
/* The available CIE versions are 1 (DWARF 2), 3 (DWARF 3), and 4
|
||
(DWARF 4 and 5). */
|
||
if (flag_dwarf_cie_version < 1
|
||
|| flag_dwarf_cie_version == 2
|
||
|| flag_dwarf_cie_version > 4)
|
||
as_fatal (_("Invalid --gdwarf-cie-version `%s'"), optarg);
|
||
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;
|
||
|
||
case OPTION_LISTING_LHS_WIDTH:
|
||
listing_lhs_width = atoi (optarg);
|
||
if (listing_lhs_width_second < listing_lhs_width)
|
||
listing_lhs_width_second = listing_lhs_width;
|
||
break;
|
||
case OPTION_LISTING_LHS_WIDTH2:
|
||
{
|
||
int tmp = atoi (optarg);
|
||
|
||
if (tmp > listing_lhs_width)
|
||
listing_lhs_width_second = tmp;
|
||
}
|
||
break;
|
||
case OPTION_LISTING_RHS_WIDTH:
|
||
listing_rhs_width = atoi (optarg);
|
||
break;
|
||
case OPTION_LISTING_CONT_LINES:
|
||
listing_lhs_cont_lines = atoi (optarg);
|
||
break;
|
||
|
||
case 'M':
|
||
flag_mri = 1;
|
||
#ifdef TC_M68K
|
||
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 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;
|
||
|
||
case OPTION_SIZE_CHECK:
|
||
if (strcasecmp (optarg, "error") == 0)
|
||
flag_allow_nonconst_size = FALSE;
|
||
else if (strcasecmp (optarg, "warning") == 0)
|
||
flag_allow_nonconst_size = TRUE;
|
||
else
|
||
as_fatal (_("Invalid --size-check= option: `%s'"), optarg);
|
||
break;
|
||
|
||
case OPTION_ELF_STT_COMMON:
|
||
if (strcasecmp (optarg, "no") == 0)
|
||
flag_use_elf_stt_common = 0;
|
||
else if (strcasecmp (optarg, "yes") == 0)
|
||
flag_use_elf_stt_common = 1;
|
||
else
|
||
as_fatal (_("Invalid --elf-stt-common= option: `%s'"),
|
||
optarg);
|
||
break;
|
||
|
||
case OPTION_SECTNAME_SUBST:
|
||
flag_sectname_subst = 1;
|
||
break;
|
||
|
||
case OPTION_ELF_BUILD_NOTES:
|
||
if (strcasecmp (optarg, "no") == 0)
|
||
flag_generate_build_notes = FALSE;
|
||
else if (strcasecmp (optarg, "yes") == 0)
|
||
flag_generate_build_notes = TRUE;
|
||
else
|
||
as_fatal (_("Invalid --generate-missing-build-notes option: `%s'"),
|
||
optarg);
|
||
break;
|
||
|
||
#endif /* OBJ_ELF */
|
||
|
||
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 == '-')
|
||
optarg ++;
|
||
|
||
if (strcmp (optarg, "alternate") == 0)
|
||
{
|
||
flag_macro_alternate = 1;
|
||
break;
|
||
}
|
||
optarg ++;
|
||
/* Fall through. */
|
||
|
||
case 'a':
|
||
if (optarg)
|
||
{
|
||
if (optarg != old_argv[optind] && optarg[-1] == '=')
|
||
--optarg;
|
||
|
||
if (md_parse_option (optc, optarg) != 0)
|
||
break;
|
||
|
||
while (*optarg)
|
||
{
|
||
switch (*optarg)
|
||
{
|
||
case 'c':
|
||
listing |= LISTING_NOCOND;
|
||
break;
|
||
case 'd':
|
||
listing |= LISTING_NODEBUG;
|
||
break;
|
||
case 'g':
|
||
listing |= LISTING_GENERAL;
|
||
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. */
|
||
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;
|
||
|
||
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;
|
||
}
|
||
}
|
||
}
|
||
|
||
free (shortopts);
|
||
free (longopts);
|
||
|
||
*pargc = new_argc;
|
||
*pargv = new_argv;
|
||
|
||
#ifdef md_after_parse_args
|
||
md_after_parse_args ();
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
dump_statistics (void)
|
||
{
|
||
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);
|
||
|
||
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
|
||
}
|
||
|
||
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 size_t
|
||
macro_expr (const char *emsg, size_t idx, sb *in, offsetT *val)
|
||
{
|
||
expressionS ex;
|
||
|
||
sb_terminate (in);
|
||
|
||
temp_ilp (in->ptr + idx);
|
||
expression_and_evaluate (&ex);
|
||
idx = input_line_pointer - in->ptr;
|
||
restore_ilp ();
|
||
|
||
if (ex.X_op != O_constant)
|
||
as_bad ("%s", emsg);
|
||
|
||
*val = 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;
|
||
#ifndef OBJ_MACH_O
|
||
flagword applicable;
|
||
#endif
|
||
|
||
need_pass_2 = 0;
|
||
|
||
#ifndef OBJ_MACH_O
|
||
/* 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 (text_section,
|
||
applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_CODE | SEC_READONLY));
|
||
bfd_set_section_flags (data_section,
|
||
applicable & (SEC_ALLOC | SEC_LOAD | SEC_RELOC
|
||
| SEC_DATA));
|
||
bfd_set_section_flags (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);
|
||
|
||
#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. */
|
||
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 ("");
|
||
}
|
||
|
||
|
||
int
|
||
main (int argc, char ** argv)
|
||
{
|
||
char ** argv_orig = argv;
|
||
struct stat sob;
|
||
|
||
int macro_strip_at;
|
||
|
||
start_time = get_run_time ();
|
||
signal_init ();
|
||
|
||
#if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES)
|
||
setlocale (LC_MESSAGES, "");
|
||
#endif
|
||
#if defined (HAVE_SETLOCALE)
|
||
setlocale (LC_CTYPE, "");
|
||
#endif
|
||
bindtextdomain (PACKAGE, LOCALEDIR);
|
||
textdomain (PACKAGE);
|
||
|
||
if (debug_memory)
|
||
chunksize = 64;
|
||
|
||
#ifdef HOST_SPECIAL_INIT
|
||
HOST_SPECIAL_INIT (argc, argv);
|
||
#endif
|
||
|
||
myname = argv[0];
|
||
xmalloc_set_program_name (myname);
|
||
|
||
expandargv (&argc, &argv);
|
||
|
||
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 ();
|
||
if (bfd_init () != BFD_INIT_MAGIC)
|
||
as_fatal (_("libbfd ABI mismatch"));
|
||
bfd_set_error_program_name (myname);
|
||
|
||
#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);
|
||
|
||
if (argc > 1 && stat (out_file_name, &sob) == 0)
|
||
{
|
||
int i;
|
||
|
||
for (i = 1; i < argc; ++i)
|
||
{
|
||
struct stat sib;
|
||
|
||
/* Check that the input file and output file are different. */
|
||
if (stat (argv[i], &sib) == 0
|
||
&& sib.st_ino == sob.st_ino
|
||
/* POSIX emulating systems may support stat() but if the
|
||
underlying file system does not support a file serial number
|
||
of some kind then they will return 0 for the inode. So
|
||
two files with an inode of 0 may not actually be the same.
|
||
On real POSIX systems no ordinary file will ever have an
|
||
inode of 0. */
|
||
&& sib.st_ino != 0
|
||
/* Different files may have the same inode number if they
|
||
reside on different devices, so check the st_dev field as
|
||
well. */
|
||
&& sib.st_dev == sob.st_dev)
|
||
{
|
||
const char *saved_out_file_name = out_file_name;
|
||
|
||
/* Don't let as_fatal remove the output file! */
|
||
out_file_name = NULL;
|
||
as_fatal (_("The input '%s' and output '%s' files are the same"),
|
||
argv[i], saved_out_file_name);
|
||
}
|
||
}
|
||
}
|
||
|
||
symbol_begin ();
|
||
frag_init ();
|
||
subsegs_begin ();
|
||
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);
|
||
|
||
macro_strip_at = 0;
|
||
#ifdef TC_I960
|
||
macro_strip_at = flag_mri;
|
||
#endif
|
||
|
||
macro_init (flag_macro_alternate, flag_mri, macro_strip_at, macro_expr);
|
||
|
||
PROGRESS (1);
|
||
|
||
output_file_create (out_file_name);
|
||
gas_assert (stdoutput != 0);
|
||
|
||
dot_symbol_init ();
|
||
|
||
#ifdef tc_init_after_args
|
||
tc_init_after_args ();
|
||
#endif
|
||
|
||
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. */
|
||
while (defsyms != NULL)
|
||
{
|
||
symbolS *sym;
|
||
struct defsym_list *next;
|
||
|
||
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);
|
||
defsyms = next;
|
||
}
|
||
|
||
PROGRESS (1);
|
||
|
||
/* Assemble it. */
|
||
perform_an_assembly_pass (argc, argv);
|
||
|
||
cond_finish_check (-1);
|
||
|
||
#ifdef md_end
|
||
md_end ();
|
||
#endif
|
||
|
||
#if 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 (gnustack,
|
||
SEC_READONLY | (flag_execstack ? SEC_CODE : 0));
|
||
|
||
}
|
||
#endif
|
||
|
||
/* If we've been collecting dwarf2 .debug_line info, either for
|
||
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 ();
|
||
|
||
keep_it = 0;
|
||
if (seen_at_least_1_file ())
|
||
{
|
||
int n_warns, n_errs;
|
||
char warn_msg[50];
|
||
char err_msg[50];
|
||
|
||
write_object_file ();
|
||
|
||
n_warns = had_warnings ();
|
||
n_errs = had_errors ();
|
||
|
||
sprintf (warn_msg,
|
||
ngettext ("%d warning", "%d warnings", n_warns), n_warns);
|
||
sprintf (err_msg,
|
||
ngettext ("%d error", "%d errors", n_errs), n_errs);
|
||
if (flag_fatal_warnings && n_warns != 0)
|
||
{
|
||
if (n_errs == 0)
|
||
as_bad (_("%s, treating warnings as errors"), warn_msg);
|
||
n_errs += n_warns;
|
||
}
|
||
|
||
if (n_errs == 0)
|
||
keep_it = 1;
|
||
else if (flag_always_generate_output)
|
||
{
|
||
/* The -Z flag indicates that an object file should be generated,
|
||
regardless of warnings and errors. */
|
||
keep_it = 1;
|
||
fprintf (stderr, _("%s, %s, generating bad object file\n"),
|
||
err_msg, warn_msg);
|
||
}
|
||
}
|
||
|
||
fflush (stderr);
|
||
|
||
#ifndef NO_LISTING
|
||
listing_print (listing_filename, argv_orig);
|
||
#endif
|
||
|
||
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);
|
||
}
|