/* Parse options for the GNU linker.
- Copyright (C) 1991-2018 Free Software Foundation, Inc.
+ Copyright (C) 1991-2020 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
#include "safe-ctype.h"
#include "getopt.h"
#include "bfdlink.h"
+#include "ctf-api.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
{ {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
'\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
+ { {"enable-non-contiguous-regions", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS},
+ '\0', NULL, N_("Enable support of non-contiguous memory regions"), TWO_DASHES },
+ { {"enable-non-contiguous-regions-warnings", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS},
+ '\0', NULL, N_("Enable warnings when --enable-non-contiguous-regions may cause unexpected behaviour"), TWO_DASHES },
{ {"EB", no_argument, NULL, OPTION_EB},
'\0', NULL, N_("Link big-endian objects"), ONE_DASH },
{ {"EL", no_argument, NULL, OPTION_EL},
{ {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
'\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
TWO_DASHES },
+ { {"disable-multiple-abs-defs", no_argument, NULL,
+ OPTION_DISABLE_MULTIPLE_DEFS_ABS},
+ '\0', NULL, N_("Do not allow multiple definitions with symbols included\n"
+ " in filename invoked by -R or --just-symbols"),
+ TWO_DASHES},
{ {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
'\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
{ {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
{ {"init", required_argument, NULL, OPTION_INIT},
'\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
{ {"Map", required_argument, NULL, OPTION_MAP},
- '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
+ '\0', N_("FILE/DIR"), N_("Write a linker map to FILE or DIR/<outputname>.map"), ONE_DASH },
{ {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
'\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
{ {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
'\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
{ {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
'\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
+ { {"export-dynamic-symbol", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL},
+ '\0', N_("SYMBOL"), N_("Export the specified symbol"), EXACTLY_TWO_DASHES },
+ { {"export-dynamic-symbol-list", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL_LIST},
+ '\0', N_("FILE"), N_("Read export dynamic symbol list"), EXACTLY_TWO_DASHES },
{ {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
'\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
{ {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
{ {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
'\0', NULL, N_("Warn if start of section changes due to alignment"),
TWO_DASHES },
- { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
- '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
+ { {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
+ '\0', NULL,
+#if DEFAULT_LD_TEXTREL_CHECK_WARNING
+ N_("Warn if outpout has DT_TEXTREL (default)"),
+#else
+ N_("Warn if outpout has DT_TEXTREL"),
+#endif
TWO_DASHES },
+ { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
+ '\0', NULL, NULL, NO_HELP },
{ {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
'\0', NULL, N_("Warn if an object has alternate ELF machine code"),
TWO_DASHES },
{ {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
'\0', N_("=MODE"), N_("Control how orphan sections are handled."),
TWO_DASHES },
+ { {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED},
+ '\0', NULL, N_("Show discarded sections in map file output (default)"),
+ TWO_DASHES },
+ { {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED},
+ '\0', NULL, N_("Do not show discarded sections in map file output"),
+ TWO_DASHES },
};
#define OPTION_COUNT ARRAY_SIZE (ld_options)
struct option *longopts;
struct option *really_longopts;
int last_optind;
- enum report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
+ enum symbolic_enum
+ {
+ symbolic_unset = 0,
+ symbolic,
+ symbolic_functions,
+ } opt_symbolic = symbolic_unset;
+ enum dynamic_list_enum
+ {
+ dynamic_list_unset = 0,
+ dynamic_list_data,
+ dynamic_list
+ } opt_dynamic_list = dynamic_list_unset;
+ struct bfd_elf_dynamic_list *export_list = NULL;
shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
longopts = (struct option *)
case OPTION_NO_EXPORT_DYNAMIC:
link_info.export_dynamic = FALSE;
break;
+ case OPTION_NON_CONTIGUOUS_REGIONS:
+ link_info.non_contiguous_regions = TRUE;
+ break;
+ case OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS:
+ link_info.non_contiguous_regions_warnings = TRUE;
+ break;
case 'e':
lang_add_entry (optarg, TRUE);
break;
Use --call-shared or -Bdynamic for this. */
break;
case 'n':
+ config.text_read_only = TRUE;
config.magic_demand_paged = FALSE;
input_flags.dynamic = FALSE;
break;
link_info.keep_memory = FALSE;
break;
case OPTION_NO_UNDEFINED:
- link_info.unresolved_syms_in_objects
- = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
break;
case OPTION_ALLOW_SHLIB_UNDEFINED:
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
break;
case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
- link_info.unresolved_syms_in_shared_libs
- = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
break;
case OPTION_UNRESOLVED_SYMBOLS:
if (strcmp (optarg, "ignore-all") == 0)
}
else if (strcmp (optarg, "report-all") == 0)
{
- link_info.unresolved_syms_in_objects
- = how_to_report_unresolved_symbols;
- link_info.unresolved_syms_in_shared_libs
- = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
+ link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
}
else if (strcmp (optarg, "ignore-in-object-files") == 0)
{
link_info.unresolved_syms_in_objects = RM_IGNORE;
- link_info.unresolved_syms_in_shared_libs
- = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
}
else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
{
- link_info.unresolved_syms_in_objects
- = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else
einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
break;
case OPTION_WARN_UNRESOLVED_SYMBOLS:
- how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
- if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
- link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
- if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
- link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
+ link_info.warn_unresolved_syms = TRUE;
break;
-
case OPTION_ERROR_UNRESOLVED_SYMBOLS:
- how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
- if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
- link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
- if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
- link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
+ link_info.warn_unresolved_syms = FALSE;
break;
case OPTION_ALLOW_MULTIPLE_DEFINITION:
link_info.allow_multiple_definition = TRUE;
case OPTION_NO_STRIP_DISCARDED:
link_info.strip_discarded = FALSE;
break;
+ case OPTION_DISABLE_MULTIPLE_DEFS_ABS:
+ link_info.prohibit_multiple_definition_absolute = TRUE;
+ break;
case OPTION_SHARED:
if (config.has_shared)
{
config.stats = TRUE;
break;
case OPTION_SYMBOLIC:
- command_line.symbolic = symbolic;
+ opt_symbolic = symbolic;
break;
case OPTION_SYMBOLIC_FUNCTIONS:
- command_line.symbolic = symbolic_functions;
+ opt_symbolic = symbolic_functions;
break;
case 't':
- trace_files = TRUE;
+ ++trace_files;
break;
case 'T':
previous_script_handle = saved_script_handle;
- ldfile_open_command_file (optarg);
+ ldfile_open_script_file (optarg);
parser_input = input_script;
yyparse ();
previous_script_handle = NULL;
command_line.version_exports_section = optarg;
break;
case OPTION_DYNAMIC_LIST_DATA:
- command_line.dynamic_list = dynamic_list_data;
- if (command_line.symbolic == symbolic)
- command_line.symbolic = symbolic_unset;
+ opt_dynamic_list = dynamic_list_data;
break;
case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
lang_append_dynamic_list_cpp_typeinfo ();
- if (command_line.dynamic_list != dynamic_list_data)
- command_line.dynamic_list = dynamic_list;
- if (command_line.symbolic == symbolic)
- command_line.symbolic = symbolic_unset;
+ if (opt_dynamic_list != dynamic_list_data)
+ opt_dynamic_list = dynamic_list;
break;
case OPTION_DYNAMIC_LIST_CPP_NEW:
lang_append_dynamic_list_cpp_new ();
- if (command_line.dynamic_list != dynamic_list_data)
- command_line.dynamic_list = dynamic_list;
- if (command_line.symbolic == symbolic)
- command_line.symbolic = symbolic_unset;
+ if (opt_dynamic_list != dynamic_list_data)
+ opt_dynamic_list = dynamic_list;
break;
case OPTION_DYNAMIC_LIST:
/* This option indicates a small script that only specifies
ldfile_open_command_file (optarg);
saved_script_handle = hold_script_handle;
parser_input = input_dynamic_list;
+ current_dynamic_list_p = &link_info.dynamic_list;
+ yyparse ();
+ }
+ if (opt_dynamic_list != dynamic_list_data)
+ opt_dynamic_list = dynamic_list;
+ break;
+ case OPTION_EXPORT_DYNAMIC_SYMBOL:
+ {
+ struct bfd_elf_version_expr *expr
+ = lang_new_vers_pattern (NULL, xstrdup (optarg), NULL,
+ FALSE);
+ lang_append_dynamic_list (&export_list, expr);
+ }
+ break;
+ case OPTION_EXPORT_DYNAMIC_SYMBOL_LIST:
+ /* This option indicates a small script that only specifies
+ an export list. Read it, but don't assume that we've
+ seen a linker script. */
+ {
+ FILE *hold_script_handle;
+
+ hold_script_handle = saved_script_handle;
+ ldfile_open_command_file (optarg);
+ saved_script_handle = hold_script_handle;
+ parser_input = input_dynamic_list;
+ current_dynamic_list_p = &export_list;
yyparse ();
}
- if (command_line.dynamic_list != dynamic_list_data)
- command_line.dynamic_list = dynamic_list;
- if (command_line.symbolic == symbolic)
- command_line.symbolic = symbolic_unset;
break;
case OPTION_WARN_COMMON:
config.warn_common = TRUE;
case OPTION_WARN_SECTION_ALIGN:
config.warn_section_align = TRUE;
break;
- case OPTION_WARN_SHARED_TEXTREL:
- link_info.warn_shared_textrel = TRUE;
+ case OPTION_WARN_TEXTREL:
+ link_info.textrel_check = textrel_check_warning;
break;
case OPTION_WARN_ALTERNATE_EM:
link_info.warn_alternate_em = TRUE;
case 'Y':
if (CONST_STRNEQ (optarg, "P,"))
optarg += 2;
- if (default_dirlist != NULL)
- free (default_dirlist);
+ free (default_dirlist);
default_dirlist = xstrdup (optarg);
break;
case 'y':
einfo (_("%F%P: invalid argument to option"
" \"--orphan-handling\"\n"));
break;
+
+ case OPTION_NO_PRINT_MAP_DISCARDED:
+ config.print_map_discarded = FALSE;
+ break;
+
+ case OPTION_PRINT_MAP_DISCARDED:
+ config.print_map_discarded = TRUE;
+ break;
+ }
+ }
+
+ /* Run a couple of checks on the map filename. */
+ if (config.map_filename)
+ {
+ if (config.map_filename[0] == 0)
+ {
+ einfo (_("%P: no file/directory name provided for map output; ignored\n"));
+ config.map_filename = NULL;
+ }
+ else
+ {
+ struct stat s;
+
+ /* If the map filename is actually a directory then create
+ a file inside it, based upon the output filename. */
+ if (stat (config.map_filename, &s) >= 0
+ && S_ISDIR (s.st_mode))
+ {
+ char * new_name;
+
+ /* FIXME: This is a (trivial) memory leak. */
+ if (asprintf (&new_name, "%s/%s.map",
+ config.map_filename, output_filename) < 0)
+ {
+ /* If this alloc fails then something is probably very
+ wrong. Better to halt now rather than continue on
+ into more problems. */
+ einfo (_("%P%F: cannot create name for linker map file: %E\n"));
+ new_name = NULL;
+ }
+
+ config.map_filename = new_name;
+ }
}
}
while (ingroup)
{
+ einfo (_("%P: missing --end-group; added as last command line option\n"));
lang_leave_group ();
ingroup--;
}
if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
/* FIXME: Should we allow emulations a chance to set this ? */
- link_info.unresolved_syms_in_objects = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
/* FIXME: Should we allow emulations a chance to set this ? */
- link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
+ link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
if (bfd_link_relocatable (&link_info)
&& command_line.check_section_addresses < 0)
command_line.check_section_addresses = 0;
- /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
- --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
- --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
- for PIC outputs. -Bsymbolic overrides all others and vice versa. */
- switch (command_line.symbolic)
+ if (export_list)
{
- case symbolic_unset:
- break;
- case symbolic:
- /* -Bsymbolic is for PIC output only. */
- if (bfd_link_pic (&link_info))
+ struct bfd_elf_version_expr *head = export_list->head.list;
+ struct bfd_elf_version_expr *next;
+
+ /* For --export-dynamic-symbol[-list]:
+ 1. When building executable, treat like --dynamic-list.
+ 2. When building shared object:
+ a. If -Bsymbolic or --dynamic-list are used, treat like
+ --dynamic-list.
+ b. Otherwise, ignored.
+ */
+ if (!bfd_link_relocatable (&link_info)
+ && (bfd_link_executable (&link_info)
+ || opt_symbolic != symbolic_unset
+ || opt_dynamic_list != dynamic_list_unset))
{
- link_info.symbolic = TRUE;
- /* Should we free the unused memory? */
- link_info.dynamic_list = NULL;
- command_line.dynamic_list = dynamic_list_unset;
+ /* Append the export list to link_info.dynamic_list. */
+ if (link_info.dynamic_list)
+ {
+ for (next = head; next->next != NULL; next = next->next)
+ ;
+ next->next = link_info.dynamic_list->head.list;
+ link_info.dynamic_list->head.list = head;
+ }
+ else
+ link_info.dynamic_list = export_list;
+
+ if (opt_dynamic_list != dynamic_list_data)
+ opt_dynamic_list = dynamic_list;
+ }
+ else
+ {
+ /* Free the export list. */
+ for (; head->next != NULL; head = next)
+ {
+ next = head->next;
+ free (head);
+ }
+ free (export_list);
}
- break;
- case symbolic_functions:
- /* -Bsymbolic-functions is for PIC output only. */
- if (bfd_link_pic (&link_info))
- command_line.dynamic_list = dynamic_list_data;
- break;
}
- switch (command_line.dynamic_list)
+ switch (opt_dynamic_list)
{
case dynamic_list_unset:
break;
/* Fall through. */
case dynamic_list:
link_info.dynamic = TRUE;
+ opt_symbolic = symbolic_unset;
break;
}
+ /* -Bsymbolic and -Bsymbols-functions are for shared library output. */
+ if (bfd_link_dll (&link_info))
+ switch (opt_symbolic)
+ {
+ case symbolic_unset:
+ break;
+ case symbolic:
+ link_info.symbolic = TRUE;
+ if (link_info.dynamic_list)
+ {
+ struct bfd_elf_version_expr *ent, *next;
+ for (ent = link_info.dynamic_list->head.list; ent; ent = next)
+ {
+ next = ent->next;
+ free (ent);
+ }
+ free (link_info.dynamic_list);
+ link_info.dynamic_list = NULL;
+ }
+ break;
+ case symbolic_functions:
+ link_info.dynamic = TRUE;
+ link_info.dynamic_data = TRUE;
+ break;
+ }
+
if (!bfd_link_dll (&link_info))
{
if (command_line.filter_shlib)
}
/* There was no existing value so we must create a new segment
entry. */
- seg = (segment_type *) stat_alloc (sizeof (*seg));
+ seg = stat_alloc (sizeof (*seg));
seg->name = name;
seg->value = val;
seg->used = FALSE;
fprintf (file, _("\
--exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
fprintf (file, _("\
- --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
+ --hash-style=STYLE Set hash style to sysv/gnu/both. Default: "));
+ if (DEFAULT_EMIT_SYSV_HASH)
+ {
+ /* Note - these strings are not translated as
+ they are keywords not descriptive text. */
+ if (DEFAULT_EMIT_GNU_HASH)
+ fprintf (file, "both\n");
+ else
+ fprintf (file, "sysv\n");
+ }
+ else
+ {
+ if (DEFAULT_EMIT_GNU_HASH)
+ fprintf (file, "gnu\n");
+ else
+ /* FIXME: Can this happen ? */
+ fprintf (file, "none\n");
+ }
fprintf (file, _("\
-P AUDITLIB, --depaudit=AUDITLIB\n" "\
Specify a library to use for auditing dependencies\n"));
fprintf (file, _("\
-z norelro Don't create RELRO program header (default)\n"));
#endif
+#if DEFAULT_LD_Z_SEPARATE_CODE
+ fprintf (file, _("\
+ -z separate-code Create separate code program header (default)\n"));
+ fprintf (file, _("\
+ -z noseparate-code Don't create separate code program header\n"));
+#else
fprintf (file, _("\
-z separate-code Create separate code program header\n"));
fprintf (file, _("\
-z noseparate-code Don't create separate code program header (default)\n"));
+#endif
fprintf (file, _("\
-z common Generate common symbols with STT_COMMON type\n"));
fprintf (file, _("\
-z nocommon Generate common symbols with STT_OBJECT type\n"));
fprintf (file, _("\
-z stack-size=SIZE Set size of stack segment\n"));
- fprintf (file, _("\
- -z text Treat DT_TEXTREL in shared object as error\n"));
- fprintf (file, _("\
- -z notext Don't treat DT_TEXTREL in shared object as error\n"));
- fprintf (file, _("\
- -z textoff Don't treat DT_TEXTREL in shared object as error\n"));
+ if (link_info.textrel_check == textrel_check_error)
+ fprintf (file, _("\
+ -z text Treat DT_TEXTREL in output as error (default)\n"));
+ else
+ fprintf (file, _("\
+ -z text Treat DT_TEXTREL in output as error\n"));
+ if (link_info.textrel_check == textrel_check_none)
+ {
+ fprintf (file, _("\
+ -z notext Don't treat DT_TEXTREL in output as error (default)\n"));
+ fprintf (file, _("\
+ -z textoff Don't treat DT_TEXTREL in output as error (default)\n"));
+ }
+ else
+ {
+ fprintf (file, _("\
+ -z notext Don't treat DT_TEXTREL in output as error\n"));
+ fprintf (file, _("\
+ -z textoff Don't treat DT_TEXTREL in output as error\n"));
+ }
}
static void
projects / deliverable / binutils-gdb.git / blobdiff