-/* ld.h -
+/* ld.h -- general linker header file
+ Copyright (C) 1991-2015 Free Software Foundation, Inc.
- Copyright (C) 1991 Free Software Foundation, Inc.
+ This file is part of the GNU Binutils.
- This file is part of GLD, the Gnu Linker.
-
- GLD is free software; you can redistribute it and/or modify
+ This program 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 1, or (at your option)
- any later version.
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
- GLD is distributed in the hope that it will be useful,
+ This program 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 GLD; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#ifndef LD_H
+#define LD_H
+
+#ifdef HAVE_LOCALE_H
+#endif
+#ifndef SEEK_CUR
+#define SEEK_CUR 1
+#endif
+#ifndef SEEK_END
+#define SEEK_END 2
+#endif
+
+#ifdef HAVE_LOCALE_H
+# ifndef ENABLE_NLS
+ /* The Solaris version of locale.h always includes libintl.h. If we have
+ been configured with --disable-nls then ENABLE_NLS will not be defined
+ and the dummy definitions of bindtextdomain (et al) below will conflict
+ with the defintions in libintl.h. So we define these values to prevent
+ the bogus inclusion of libintl.h. */
+# define _LIBINTL_H
+# define _LIBGETTEXT_H
+# endif
+# include <locale.h>
+#endif
+
+#ifdef ENABLE_NLS
+# include <libintl.h>
+# define _(String) gettext (String)
+# ifdef gettext_noop
+# define N_(String) gettext_noop (String)
+# else
+# define N_(String) (String)
+# endif
+#else
+# define gettext(Msgid) (Msgid)
+# define dgettext(Domainname, Msgid) (Msgid)
+# define dcgettext(Domainname, Msgid, Category) (Msgid)
+# define textdomain(Domainname) while (0) /* nothing */
+# define bindtextdomain(Domainname, Dirname) while (0) /* nothing */
+# define _(String) (String)
+# define N_(String) (String)
+#endif
+
+/* Look in this environment name for the linker to pretend to be */
+#define EMULATION_ENVIRON "LDEMULATION"
+/* If in there look for the strings: */
+
+/* Look in this variable for a target format */
+#define TARGET_ENVIRON "GNUTARGET"
+
+/* Input sections which are put in a section of this name are actually
+ discarded. */
+#define DISCARD_SECTION_NAME "/DISCARD/"
+
+/* A file name list */
+typedef struct name_list {
+ const char *name;
+ struct name_list *next;
+}
+name_list;
+
+typedef enum {sort_none, sort_ascending, sort_descending} sort_order;
+
+/* A wildcard specification. */
+
+typedef enum {
+ none, by_name, by_alignment, by_name_alignment, by_alignment_name,
+ by_none, by_init_priority
+} sort_type;
+
+extern sort_type sort_section;
+
+struct wildcard_spec {
+ const char *name;
+ struct name_list *exclude_name_list;
+ sort_type sorted;
+ struct flag_info *section_flag_list;
+};
+
+struct wildcard_list {
+ struct wildcard_list *next;
+ struct wildcard_spec spec;
+};
+
+#define BYTE_SIZE (1)
+#define SHORT_SIZE (2)
+#define LONG_SIZE (4)
+#define QUAD_SIZE (8)
+
+enum endian_enum { ENDIAN_UNSET = 0, ENDIAN_BIG, ENDIAN_LITTLE };
+
+enum symbolic_enum
+ {
+ symbolic_unset = 0,
+ symbolic,
+ symbolic_functions,
+ };
+
+enum dynamic_list_enum
+ {
+ dynamic_list_unset = 0,
+ dynamic_list_data,
+ dynamic_list
+ };
+
+typedef struct {
+ /* 1 => assign space to common symbols even if `relocatable_output'. */
+ bfd_boolean force_common_definition;
+ /* 1 => do not assign addresses to common symbols. */
+ bfd_boolean inhibit_common_definition;
-#define flag_is_not_at_end(x) ((x) & BSF_NOT_AT_END)
-#define flag_is_ordinary_local(x) (((x) & (BSF_LOCAL))&!((x) & (BSF_DEBUGGING)))
-#define flag_is_debugger(x) ((x) & BSF_DEBUGGING)
-#define flag_is_undefined_or_global(x) ((x) & (BSF_UNDEFINED | BSF_GLOBAL))
-#define flag_is_defined(x) (!((x) & (BSF_UNDEFINED)))
-#define flag_is_global_or_common(x) ((x) & (BSF_GLOBAL | BSF_FORT_COMM))
-#define flag_is_undefined_or_global_or_common(x) ((x) & (BSF_UNDEFINED | BSF_GLOBAL | BSF_FORT_COMM))
-#define flag_is_common(x) ((x) & BSF_FORT_COMM)
-#define flag_is_global(x) ((x) & (BSF_GLOBAL))
-#define flag_is_undefined(x) ((x) & BSF_UNDEFINED)
-#define flag_set(x,y) (x = y)
-#define flag_is_fort_comm(x) ((x) & BSF_FORT_COMM)
-#define flag_is_absolute(x) ((x) & BSF_ABSOLUTE)
-/* Extra information we hold on sections */
-typedef struct user_section_struct {
- /* Pointer to the section where this data will go */
- struct lang_input_statement_struct *file;
-} section_userdata_type;
+ /* If TRUE, build MIPS embedded PIC relocation tables in the output
+ file. */
+ bfd_boolean embedded_relocs;
+ /* If TRUE, force generation of a file with a .exe file. */
+ bfd_boolean force_exe_suffix;
-#define get_userdata(x) ((x)->userdata)
-#define as_output_section_statement(x) ((x)->otheruserdata)
+ /* If TRUE, generate a cross reference report. */
+ bfd_boolean cref;
+ /* If TRUE (which is the default), warn about mismatched input
+ files. */
+ bfd_boolean warn_mismatch;
+ /* Warn on attempting to open an incompatible library during a library
+ search. */
+ bfd_boolean warn_search_mismatch;
-/* Which symbols should be stripped (omitted from the output):
- none, all, or debugger symbols. */
-typedef enum { STRIP_NONE, STRIP_ALL, STRIP_DEBUGGER } strip_symbols_type;
+ /* If non-zero check section addresses, once computed,
+ for overlaps. Relocatable links only check when this is > 0. */
+ signed char check_section_addresses;
+ /* If TRUE allow the linking of input files in an unknown architecture
+ assuming that the user knows what they are doing. This was the old
+ behaviour of the linker. The new default behaviour is to reject such
+ input files. */
+ bfd_boolean accept_unknown_input_arch;
+ /* If TRUE we'll just print the default output on stdout. */
+ bfd_boolean print_output_format;
+ /* Big or little endian as set on command line. */
+ enum endian_enum endian;
-/* Which local symbols should be omitted:
- none, all, or those starting with L.
- This is irrelevant if STRIP_NONE. */
-typedef enum { DISCARD_NONE, DISCARD_ALL, DISCARD_L } discard_locals_type;
+ /* -Bsymbolic and -Bsymbolic-functions, as set on command line. */
+ enum symbolic_enum symbolic;
+ /* --dynamic-list, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo
+ and --dynamic-list FILE, as set on command line. */
+ enum dynamic_list_enum dynamic_list;
+ /* Name of runtime interpreter to invoke. */
+ char *interpreter;
+ /* Name to give runtime libary from the -soname argument. */
+ char *soname;
+ /* Runtime library search path from the -rpath argument. */
+ char *rpath;
+ /* Link time runtime library search path from the -rpath-link
+ argument. */
+ char *rpath_link;
-#define ALIGN(this, boundary) ((( (this) + ((boundary) -1)) & (~((boundary)-1))))
+ /* Name of shared object whose symbol table should be filtered with
+ this shared object. From the --filter option. */
+ char *filter_shlib;
-typedef struct {
- /* 1 => assign space to common symbols even if `relocatable_output'. */
- boolean force_common_definition;
+ /* Name of shared object for whose symbol table this shared object
+ is an auxiliary filter. From the --auxiliary option. */
+ char **auxiliary_filters;
+ /* A version symbol to be applied to the symbol names found in the
+ .exports sections. */
+ char *version_exports_section;
+
+ /* Default linker script. */
+ char *default_script;
} args_type;
+extern args_type command_line;
+
typedef int token_code_type;
-typedef struct
-{
- unsigned int specified_data_size;
- boolean magic_demand_paged;
- boolean make_executable;
- /* 1 => write relocation into output file so can re-input it later. */
- boolean relocateable_output;
-
- /* Will we build contstructors, or leave alone ? */
- boolean build_constructors;
- /* 1 => write relocation such that a UNIX linker can understand it.
- This is used mainly to finish of sets that were built. */
- boolean unix_relocate;
-
- boolean sort_common;
-} ld_config_type;
-#define set_asymbol_chain(x,y) ((x)->udata = (PTR)y)
-#define get_asymbol_chain(x) ((asymbol **)((x)->udata))
-#define get_loader_symbol(x) ((loader_global_asymbol *)((x)->udata))
-#define set_loader_symbol(x,y) ((x)->udata = (PTR)y)
+typedef struct {
+ bfd_boolean magic_demand_paged;
+ bfd_boolean make_executable;
+ /* If TRUE, -shared is supported. */
+ /* ??? A better way to do this is perhaps to define this in the
+ ld_emulation_xfer_struct since this is really a target dependent
+ parameter. */
+ bfd_boolean has_shared;
+ /* If TRUE, build constructors. */
+ bfd_boolean build_constructors;
+ /* If TRUE, warn about any constructors. */
+ bfd_boolean warn_constructors;
+ /* If TRUE, warn about merging common symbols with others. */
+ bfd_boolean warn_common;
+ /* If TRUE, only warn once about a particular undefined symbol. */
+ bfd_boolean warn_once;
-typedef enum {
- lang_first_phase_enum,
- lang_allocating_phase_enum,
- lang_final_phase_enum } lang_phase_type;
+ /* If TRUE, warn if multiple global-pointers are needed (Alpha
+ only). */
+ bfd_boolean warn_multiple_gp;
+
+ /* If TRUE, warn if the starting address of an output section
+ changes due to the alignment of an input section. */
+ bfd_boolean warn_section_align;
+
+ /* If TRUE, warning messages are fatal */
+ bfd_boolean fatal_warnings;
+
+ sort_order sort_common;
+
+ bfd_boolean text_read_only;
+
+ bfd_boolean stats;
+
+ /* If set, orphan input sections will be mapped to separate output
+ sections. */
+ bfd_boolean unique_orphan_sections;
+
+ /* If set, only search library directories explicitly selected
+ on the command line. */
+ bfd_boolean only_cmd_line_lib_dirs;
+
+ /* If set, numbers and absolute symbols are simply treated as
+ numbers everywhere. */
+ bfd_boolean sane_expr;
+
+ /* If set, code and non-code sections should never be in one segment. */
+ bfd_boolean separate_code;
+
+ /* The rpath separation character. Usually ':'. */
+ char rpath_separator;
+
+ char *map_filename;
+ FILE *map_file;
+
+ unsigned int split_by_reloc;
+ bfd_size_type split_by_file;
+
+ bfd_size_type specified_data_size;
+
+ /* The size of the hash table to use. */
+ unsigned long hash_table_size;
+
+ /* The maximum page size for ELF. */
+ bfd_vma maxpagesize;
+
+ /* The common page size for ELF. */
+ bfd_vma commonpagesize;
+} ld_config_type;
+
+extern ld_config_type config;
+
+extern FILE * saved_script_handle;
+extern bfd_boolean force_make_executable;
+extern int yyparse (void);
+extern void add_cref (const char *, bfd *, asection *, bfd_vma);
+extern bfd_boolean handle_asneeded_cref (bfd *, enum notice_asneeded_action);
+extern void output_cref (FILE *);
+extern void check_nocrossrefs (void);
+extern void ld_abort (const char *, int, const char *) ATTRIBUTE_NORETURN;
+/* If gcc >= 2.6, we can give a function name, too. */
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6)
+#define __PRETTY_FUNCTION__ NULL
+#endif
+#undef abort
+#define abort() ld_abort (__FILE__, __LINE__, __PRETTY_FUNCTION__)
+#endif
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