/* bfdlink.h -- header file for BFD link routines
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1993-2015 Free Software Foundation, Inc.
Written by Steve Chamberlain and Ian Lance Taylor, Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
/* Type of this entry. */
ENUM_BITFIELD (bfd_link_hash_type) type : 8;
+ /* Symbol is referenced in a normal object file, as distict from a LTO
+ IR object file. */
unsigned int non_ir_ref : 1;
+ /* Symbol is a built-in define. These will be overridden by PROVIDE
+ in a linker script. */
+ unsigned int linker_def : 1;
+
/* A union of information depending upon the type. */
union
{
struct bfd_link_hash_entry *undefs;
/* Entries are added to the tail of the undefs list. */
struct bfd_link_hash_entry *undefs_tail;
+ /* Function to free the hash table on closing BFD. */
+ void (*hash_table_free) (bfd *);
/* The type of the link hash table. */
enum bfd_link_hash_table_type type;
};
(bfd *, struct bfd_link_info *, const char *, bfd_boolean,
bfd_boolean, bfd_boolean);
+/* If H is a wrapped symbol, ie. the symbol name starts with "__wrap_"
+ and the remainder is found in wrap_hash, return the real symbol. */
+
+extern struct bfd_link_hash_entry *unwrap_hash_lookup
+ (struct bfd_link_info *, bfd *, struct bfd_link_hash_entry *);
+
/* Traverse a link hash table. */
extern void bfd_link_hash_traverse
(struct bfd_link_hash_table *,
/* A section flag list. */
struct flag_info_list
{
- flag_type with;
+ flag_type with;
const char *name;
bfd_boolean valid;
struct flag_info_list *next;
callback. */
unsigned int notice_all: 1;
- /* TRUE if we are loading LTO outputs. */
- unsigned int loading_lto_outputs: 1;
+ /* TRUE if the LTO plugin is active. */
+ unsigned int lto_plugin_active: 1;
/* TRUE if global symbols in discarded sections should be stripped. */
unsigned int strip_discarded: 1;
/* TRUE if we should warn alternate ELF machine code. */
unsigned int warn_alternate_em: 1;
+ /* TRUE if the linker script contained an explicit PHDRS command. */
+ unsigned int user_phdrs: 1;
+
+ /* TRUE if BND prefix in PLT entries is always generated. */
+ unsigned int bndplt: 1;
+
/* Char that may appear as the first char of a symbol, but should be
skipped (like symbol_leading_char) when looking up symbols in
wrap_hash. Used by PowerPC Linux for 'dot' symbols. */
/* Separator between archive and filename in linker script filespecs. */
char path_separator;
+ /* Default stack size. Zero means default (often zero itself), -1
+ means explicitly zero-sized. */
+ bfd_signed_vma stacksize;
+
+ /* Enable or disable target specific optimizations.
+
+ Not all targets have optimizations to enable.
+
+ Normally these optimizations are disabled by default but some targets
+ prefer to enable them by default. So this field is a tri-state variable.
+ The values are:
+
+ zero: Enable the optimizations (either from --relax being specified on
+ the command line or the backend's before_allocation emulation function.
+
+ positive: The user has requested that these optimizations be disabled.
+ (Via the --no-relax command line option).
+
+ negative: The optimizations are disabled. (Set when initializing the
+ args_type structure in ldmain.c:main. */
+ signed int disable_target_specific_optimizations;
+
/* Function callbacks. */
const struct bfd_link_callbacks *callbacks;
option). If this is NULL, no symbols are being wrapped. */
struct bfd_hash_table *wrap_hash;
+ /* Hash table of symbols which may be left unresolved during
+ a link. If this is NULL, no symbols can be left unresolved. */
+ struct bfd_hash_table *ignore_hash;
+
/* The output BFD. */
bfd *output_bfd;
/* The list of input BFD's involved in the link. These are chained
- together via the link_next field. */
+ together via the link.next field. */
bfd *input_bfds;
bfd **input_bfds_tail;
- /* Non-NULL if .note.gnu.build-id section should be created. */
- char *emit_note_gnu_build_id;
-
/* If a symbol should be created for each input BFD, this is section
where those symbols should be placed. It must be a section in
the output BFD. It may be NULL, in which case no such symbols
(struct bfd_link_info *, const char *name,
bfd *abfd, asection *section, bfd_vma address);
/* A function which is called when a symbol in notice_hash is
- defined or referenced. H is the symbol. ABFD, SECTION and
- ADDRESS are the (new) value of the symbol. If SECTION is
- bfd_und_section, this is a reference. FLAGS are the symbol
- BSF_* flags. STRING is the name of the symbol to indirect to if
- the sym is indirect, or the warning string if a warning sym. */
+ defined or referenced. H is the symbol, INH the indirect symbol
+ if applicable. ABFD, SECTION and ADDRESS are the (new) value of
+ the symbol. If SECTION is bfd_und_section, this is a reference.
+ FLAGS are the symbol BSF_* flags. */
bfd_boolean (*notice)
(struct bfd_link_info *, struct bfd_link_hash_entry *h,
- bfd *abfd, asection *section, bfd_vma address, flagword flags,
- const char *string);
+ struct bfd_link_hash_entry *inh,
+ bfd *abfd, asection *section, bfd_vma address, flagword flags);
/* Error or warning link info message. */
void (*einfo)
(const char *fmt, ...);
} indirect;
struct
{
- /* Size of contents, or zero when contents size == size
- within output section.
+ /* Size of contents, or zero when contents should be filled by
+ the architecture-dependent fill function.
A non-zero value allows filling of the output section
with an arbitrary repeated pattern. */
unsigned int size;
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