/* Object file "section" support for the BFD library.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 1990-2019 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
data in place until a <<bfd_get_section_contents>> call is
made. Other back ends may read in all the data at once. For
example, an S-record file has to be read once to determine the
- size of the data. An IEEE-695 file doesn't contain raw data in
- sections, but data and relocation expressions intermixed, so
- the data area has to be parsed to get out the data and
- relocations.
+ size of the data.
INODE
Section Output, typedef asection, Section Input, Sections
. const char *name;
.
. {* A unique sequence number. *}
-. int id;
+. unsigned int id;
.
. {* Which section in the bfd; 0..n-1 as sections are created in a bfd. *}
-. int index;
+. unsigned int index;
.
. {* The next section in the list belonging to the BFD, or NULL. *}
. struct bfd_section *next;
. synthesized from other information. *}
. flagword flags;
.
-.#define SEC_NO_FLAGS 0x000
+.#define SEC_NO_FLAGS 0x0
.
. {* Tells the OS to allocate space for this section when loading.
. This is clear for a section containing debug information only. *}
-.#define SEC_ALLOC 0x001
+.#define SEC_ALLOC 0x1
.
. {* Tells the OS to load the section from the file when loading.
. This is clear for a .bss section. *}
-.#define SEC_LOAD 0x002
+.#define SEC_LOAD 0x2
.
. {* The section contains data still to be relocated, so there is
. some relocation information too. *}
-.#define SEC_RELOC 0x004
+.#define SEC_RELOC 0x4
.
. {* A signal to the OS that the section contains read only data. *}
-.#define SEC_READONLY 0x008
+.#define SEC_READONLY 0x8
.
. {* The section contains code only. *}
-.#define SEC_CODE 0x010
+.#define SEC_CODE 0x10
.
. {* The section contains data only. *}
-.#define SEC_DATA 0x020
+.#define SEC_DATA 0x20
.
. {* The section will reside in ROM. *}
-.#define SEC_ROM 0x040
+.#define SEC_ROM 0x40
.
. {* The section contains constructor information. This section
. type is used by the linker to create lists of constructors and
. sections called <<__CTOR_LIST__>> and relocate the data
. contained within - exactly the operations it would peform on
. standard data. *}
-.#define SEC_CONSTRUCTOR 0x080
+.#define SEC_CONSTRUCTOR 0x80
.
. {* The section has contents - a data section could be
. <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>; a debug section could be
. <<SEC_HAS_CONTENTS>> *}
-.#define SEC_HAS_CONTENTS 0x100
+.#define SEC_HAS_CONTENTS 0x100
.
. {* An instruction to the linker to not output the section
. even if it has information which would normally be written. *}
-.#define SEC_NEVER_LOAD 0x200
+.#define SEC_NEVER_LOAD 0x200
.
. {* The section contains thread local data. *}
-.#define SEC_THREAD_LOCAL 0x400
+.#define SEC_THREAD_LOCAL 0x400
.
-. {* The section has GOT references. This flag is only for the
-. linker, and is currently only used by the elf32-hppa back end.
-. It will be set if global offset table references were detected
-. in this section, which indicate to the linker that the section
-. contains PIC code, and must be handled specially when doing a
-. static link. *}
-.#define SEC_HAS_GOT_REF 0x800
+. {* The section's size is fixed. Generic linker code will not
+. recalculate it and it is up to whoever has set this flag to
+. get the size right. *}
+.#define SEC_FIXED_SIZE 0x800
.
. {* The section contains common symbols (symbols may be defined
. multiple times, the value of a symbol is the amount of
. space it requires, and the largest symbol value is the one
. used). Most targets have exactly one of these (which we
. translate to bfd_com_section_ptr), but ECOFF has two. *}
-.#define SEC_IS_COMMON 0x1000
+.#define SEC_IS_COMMON 0x1000
.
. {* The section contains only debugging information. For
. example, this is set for ELF .debug and .stab sections.
. strip tests this flag to see if a section can be
. discarded. *}
-.#define SEC_DEBUGGING 0x2000
+.#define SEC_DEBUGGING 0x2000
.
. {* The contents of this section are held in memory pointed to
. by the contents field. This is checked by bfd_get_section_contents,
. and the data is retrieved from memory if appropriate. *}
-.#define SEC_IN_MEMORY 0x4000
+.#define SEC_IN_MEMORY 0x4000
.
. {* The contents of this section are to be excluded by the
. linker for executable and shared objects unless those
. objects are to be further relocated. *}
-.#define SEC_EXCLUDE 0x8000
+.#define SEC_EXCLUDE 0x8000
.
. {* The contents of this section are to be sorted based on the sum of
. the symbol and addend values specified by the associated relocation
. entries. Entries without associated relocation entries will be
. appended to the end of the section in an unspecified order. *}
-.#define SEC_SORT_ENTRIES 0x10000
+.#define SEC_SORT_ENTRIES 0x10000
.
. {* When linking, duplicate sections of the same name should be
. discarded, rather than being combined into a single section as
. is usually done. This is similar to how common symbols are
. handled. See SEC_LINK_DUPLICATES below. *}
-.#define SEC_LINK_ONCE 0x20000
+.#define SEC_LINK_ONCE 0x20000
.
. {* If SEC_LINK_ONCE is set, this bitfield describes how the linker
. should handle duplicate sections. *}
-.#define SEC_LINK_DUPLICATES 0x40000
+.#define SEC_LINK_DUPLICATES 0xc0000
.
. {* This value for SEC_LINK_DUPLICATES means that duplicate
. sections with the same name should simply be discarded. *}
-.#define SEC_LINK_DUPLICATES_DISCARD 0x0
+.#define SEC_LINK_DUPLICATES_DISCARD 0x0
.
. {* This value for SEC_LINK_DUPLICATES means that the linker
. should warn if there are any duplicate sections, although
. it should still only link one copy. *}
-.#define SEC_LINK_DUPLICATES_ONE_ONLY 0x80000
+.#define SEC_LINK_DUPLICATES_ONE_ONLY 0x40000
.
. {* This value for SEC_LINK_DUPLICATES means that the linker
. should warn if any duplicate sections are a different size. *}
-.#define SEC_LINK_DUPLICATES_SAME_SIZE 0x100000
+.#define SEC_LINK_DUPLICATES_SAME_SIZE 0x80000
.
. {* This value for SEC_LINK_DUPLICATES means that the linker
. should warn if any duplicate sections contain different
. relocation or other arcane processing. It is skipped when
. going through the first-pass output, trusting that someone
. else up the line will take care of it later. *}
-.#define SEC_LINKER_CREATED 0x200000
+.#define SEC_LINKER_CREATED 0x100000
.
. {* This section should not be subject to garbage collection.
. Also set to inform the linker that this section should not be
. listed in the link map as discarded. *}
-.#define SEC_KEEP 0x400000
+.#define SEC_KEEP 0x200000
.
. {* This section contains "short" data, and should be placed
. "near" the GP. *}
-.#define SEC_SMALL_DATA 0x800000
+.#define SEC_SMALL_DATA 0x400000
.
. {* Attempt to merge identical entities in the section.
. Entity size is given in the entsize field. *}
-.#define SEC_MERGE 0x1000000
+.#define SEC_MERGE 0x800000
.
. {* If given with SEC_MERGE, entities to merge are zero terminated
. strings where entsize specifies character size instead of fixed
. size entries. *}
-.#define SEC_STRINGS 0x2000000
+.#define SEC_STRINGS 0x1000000
.
. {* This section contains data about section groups. *}
-.#define SEC_GROUP 0x4000000
+.#define SEC_GROUP 0x2000000
.
. {* The section is a COFF shared library section. This flag is
. only for the linker. If this type of section appears in
. might be cleaner to have some more general mechanism to
. allow the back end to control what the linker does with
. sections. *}
-.#define SEC_COFF_SHARED_LIBRARY 0x10000000
+.#define SEC_COFF_SHARED_LIBRARY 0x4000000
+.
+. {* This input section should be copied to output in reverse order
+. as an array of pointers. This is for ELF linker internal use
+. only. *}
+.#define SEC_ELF_REVERSE_COPY 0x4000000
.
. {* This section contains data which may be shared with other
. executables or shared objects. This is for COFF only. *}
-.#define SEC_COFF_SHARED 0x20000000
+.#define SEC_COFF_SHARED 0x8000000
+.
+. {* This section should be compressed. This is for ELF linker
+. internal use only. *}
+.#define SEC_ELF_COMPRESS 0x8000000
.
. {* When a section with this flag is being linked, then if the size of
. the input section is less than a page, it should not cross a page
. boundary. If the size of the input section is one page or more,
. it should be aligned on a page boundary. This is for TI
. TMS320C54X only. *}
-.#define SEC_TIC54X_BLOCK 0x40000000
+.#define SEC_TIC54X_BLOCK 0x10000000
+.
+. {* This section should be renamed. This is for ELF linker
+. internal use only. *}
+.#define SEC_ELF_RENAME 0x10000000
.
. {* Conditionally link this section; do not link if there are no
. references found to any symbol in the section. This is for TI
. TMS320C54X only. *}
-.#define SEC_TIC54X_CLINK 0x80000000
+.#define SEC_TIC54X_CLINK 0x20000000
+.
+. {* This section contains vliw code. This is for Toshiba MeP only. *}
+.#define SEC_MEP_VLIW 0x20000000
+.
+. {* Indicate that section has the no read flag set. This happens
+. when memory read flag isn't set. *}
+.#define SEC_COFF_NOREAD 0x40000000
+.
+. {* Indicate that section has the purecode flag set. *}
+.#define SEC_ELF_PURECODE 0x80000000
.
. {* End of section flags. *}
.
. {* Mark flag used by some linker backends for garbage collection. *}
. unsigned int gc_mark : 1;
.
+. {* Section compression status. *}
+. unsigned int compress_status : 2;
+.#define COMPRESS_SECTION_NONE 0
+.#define COMPRESS_SECTION_DONE 1
+.#define DECOMPRESS_SECTION_SIZED 2
+.
. {* The following flags are used by the ELF linker. *}
.
. {* Mark sections which have been allocated to segments. *}
.
. {* Type of sec_info information. *}
. unsigned int sec_info_type:3;
-.#define ELF_INFO_TYPE_NONE 0
-.#define ELF_INFO_TYPE_STABS 1
-.#define ELF_INFO_TYPE_MERGE 2
-.#define ELF_INFO_TYPE_EH_FRAME 3
-.#define ELF_INFO_TYPE_JUST_SYMS 4
+.#define SEC_INFO_TYPE_NONE 0
+.#define SEC_INFO_TYPE_STABS 1
+.#define SEC_INFO_TYPE_MERGE 2
+.#define SEC_INFO_TYPE_EH_FRAME 3
+.#define SEC_INFO_TYPE_JUST_SYMS 4
+.#define SEC_INFO_TYPE_TARGET 5
+.#define SEC_INFO_TYPE_EH_FRAME_ENTRY 6
.
. {* Nonzero if this section uses RELA relocations, rather than REL. *}
. unsigned int use_rela_p:1;
. {* Bits used by various backends. The generic code doesn't touch
. these fields. *}
.
-. {* Nonzero if this section has TLS related relocations. *}
-. unsigned int has_tls_reloc:1;
-.
-. {* Nonzero if this section has a gp reloc. *}
-. unsigned int has_gp_reloc:1;
-.
-. {* Nonzero if this section needs the relax finalize pass. *}
-. unsigned int need_finalize_relax:1;
-.
-. {* Whether relocations have been processed. *}
-. unsigned int reloc_done : 1;
+. unsigned int sec_flg0:1;
+. unsigned int sec_flg1:1;
+. unsigned int sec_flg2:1;
+. unsigned int sec_flg3:1;
+. unsigned int sec_flg4:1;
+. unsigned int sec_flg5:1;
.
. {* End of internal packed boolean fields. *}
.
. information. *}
. bfd_vma lma;
.
-. {* The size of the section in octets, as it will be output.
+. {* The size of the section in *octets*, as it will be output.
. Contains a value even if the section has no contents (e.g., the
. size of <<.bss>>). *}
. bfd_size_type size;
. section size calculated on a previous linker relaxation pass. *}
. bfd_size_type rawsize;
.
+. {* The compressed size of the section in octets. *}
+. bfd_size_type compressed_size;
+.
+. {* Relaxation table. *}
+. struct relax_table *relax;
+.
+. {* Count of used relaxation table entries. *}
+. int relax_count;
+.
+.
. {* If this section is going to be output, then this value is the
. offset in *bytes* into the output section of the first byte in the
. input section (byte ==> smallest addressable unit on the
. } map_head, map_tail;
.} asection;
.
+.{* Relax table contains information about instructions which can
+. be removed by relaxation -- replacing a long address with a
+. short address. *}
+.struct relax_table {
+. {* Address where bytes may be deleted. *}
+. bfd_vma addr;
+.
+. {* Number of bytes to be deleted. *}
+. int size;
+.};
+.
+.{* Note: the following are provided as inline functions rather than macros
+. because not all callers use the return value. A macro implementation
+. would use a comma expression, eg: "((ptr)->foo = val, TRUE)" and some
+. compilers will complain about comma expressions that have no effect. *}
+.static inline bfd_boolean
+.bfd_set_section_userdata (asection *sec, void *val)
+.{
+. sec->userdata = val;
+. return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_vma (asection *sec, bfd_vma val)
+.{
+. sec->vma = sec->lma = val;
+. sec->user_set_vma = TRUE;
+. return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_lma (asection *sec, bfd_vma val)
+.{
+. sec->lma = val;
+. return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_alignment (asection *sec, unsigned int val)
+.{
+. sec->alignment_power = val;
+. return TRUE;
+.}
+.
.{* These sections are global, and are managed by BFD. The application
. and target back end are not permitted to change the values in
-. these sections. New code should use the section_ptr macros rather
-. than referring directly to the const sections. The const sections
-. may eventually vanish. *}
+. these sections. *}
+.extern asection _bfd_std_section[4];
+.
.#define BFD_ABS_SECTION_NAME "*ABS*"
.#define BFD_UND_SECTION_NAME "*UND*"
.#define BFD_COM_SECTION_NAME "*COM*"
.#define BFD_IND_SECTION_NAME "*IND*"
.
-.{* The absolute section. *}
-.extern asection bfd_abs_section;
-.#define bfd_abs_section_ptr ((asection *) &bfd_abs_section)
-.#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)
-.{* Pointer to the undefined section. *}
-.extern asection bfd_und_section;
-.#define bfd_und_section_ptr ((asection *) &bfd_und_section)
-.#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
.{* Pointer to the common section. *}
-.extern asection bfd_com_section;
-.#define bfd_com_section_ptr ((asection *) &bfd_com_section)
+.#define bfd_com_section_ptr (&_bfd_std_section[0])
+.{* Pointer to the undefined section. *}
+.#define bfd_und_section_ptr (&_bfd_std_section[1])
+.{* Pointer to the absolute section. *}
+.#define bfd_abs_section_ptr (&_bfd_std_section[2])
.{* Pointer to the indirect section. *}
-.extern asection bfd_ind_section;
-.#define bfd_ind_section_ptr ((asection *) &bfd_ind_section)
+.#define bfd_ind_section_ptr (&_bfd_std_section[3])
+.
+.#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
+.#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)
.#define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr)
.
.#define bfd_is_const_section(SEC) \
.#define bfd_section_removed_from_list(ABFD, S) \
. ((S)->next == NULL ? (ABFD)->section_last != (S) : (S)->next->prev != (S))
.
-.#define BFD_FAKE_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
+.#define BFD_FAKE_SECTION(SEC, SYM, NAME, IDX, FLAGS) \
. {* name, id, index, next, prev, flags, user_set_vma, *} \
-. { NAME, IDX, 0, NULL, NULL, FLAGS, 0, \
+. { NAME, IDX, 0, NULL, NULL, FLAGS, 0, \
. \
-. {* linker_mark, linker_has_input, gc_mark, gc_mark_from_eh, *} \
+. {* linker_mark, linker_has_input, gc_mark, decompress_status, *} \
. 0, 0, 1, 0, \
. \
-. {* segment_mark, sec_info_type, use_rela_p, has_tls_reloc, *} \
-. 0, 0, 0, 0, \
+. {* segment_mark, sec_info_type, use_rela_p, *} \
+. 0, 0, 0, \
. \
-. {* has_gp_reloc, need_finalize_relax, reloc_done, *} \
-. 0, 0, 0, \
+. {* sec_flg0, sec_flg1, sec_flg2, sec_flg3, sec_flg4, sec_flg5, *} \
+. 0, 0, 0, 0, 0, 0, \
. \
-. {* vma, lma, size, rawsize *} \
-. 0, 0, 0, 0, \
+. {* vma, lma, size, rawsize, compressed_size, relax, relax_count, *} \
+. 0, 0, 0, 0, 0, 0, 0, \
. \
-. {* output_offset, output_section, alignment_power, *} \
-. 0, (struct bfd_section *) &SEC, 0, \
+. {* output_offset, output_section, alignment_power, *} \
+. 0, &SEC, 0, \
. \
. {* relocation, orelocation, reloc_count, filepos, rel_filepos, *} \
. NULL, NULL, 0, 0, 0, \
. { NULL }, { NULL } \
. }
.
+.{* We use a macro to initialize the static asymbol structures because
+. traditional C does not permit us to initialize a union member while
+. gcc warns if we don't initialize it.
+. the_bfd, name, value, attr, section [, udata] *}
+.#ifdef __STDC__
+.#define GLOBAL_SYM_INIT(NAME, SECTION) \
+. { 0, NAME, 0, BSF_SECTION_SYM, SECTION, { 0 }}
+.#else
+.#define GLOBAL_SYM_INIT(NAME, SECTION) \
+. { 0, NAME, 0, BSF_SECTION_SYM, SECTION }
+.#endif
+.
*/
-/* We use a macro to initialize the static asymbol structures because
- traditional C does not permit us to initialize a union member while
- gcc warns if we don't initialize it. */
- /* the_bfd, name, value, attr, section [, udata] */
-#ifdef __STDC__
-#define GLOBAL_SYM_INIT(NAME, SECTION) \
- { 0, NAME, 0, BSF_SECTION_SYM, (asection *) SECTION, { 0 }}
-#else
-#define GLOBAL_SYM_INIT(NAME, SECTION) \
- { 0, NAME, 0, BSF_SECTION_SYM, (asection *) SECTION }
-#endif
-
/* These symbols are global, not specific to any BFD. Therefore, anything
that tries to change them is broken, and should be repaired. */
static const asymbol global_syms[] =
{
- GLOBAL_SYM_INIT (BFD_COM_SECTION_NAME, &bfd_com_section),
- GLOBAL_SYM_INIT (BFD_UND_SECTION_NAME, &bfd_und_section),
- GLOBAL_SYM_INIT (BFD_ABS_SECTION_NAME, &bfd_abs_section),
- GLOBAL_SYM_INIT (BFD_IND_SECTION_NAME, &bfd_ind_section)
+ GLOBAL_SYM_INIT (BFD_COM_SECTION_NAME, bfd_com_section_ptr),
+ GLOBAL_SYM_INIT (BFD_UND_SECTION_NAME, bfd_und_section_ptr),
+ GLOBAL_SYM_INIT (BFD_ABS_SECTION_NAME, bfd_abs_section_ptr),
+ GLOBAL_SYM_INIT (BFD_IND_SECTION_NAME, bfd_ind_section_ptr)
};
-#define STD_SECTION(SEC, FLAGS, NAME, IDX) \
- asection SEC = BFD_FAKE_SECTION(SEC, FLAGS, &global_syms[IDX], \
- NAME, IDX)
+#define STD_SECTION(NAME, IDX, FLAGS) \
+ BFD_FAKE_SECTION(_bfd_std_section[IDX], &global_syms[IDX], NAME, IDX, FLAGS)
-STD_SECTION (bfd_com_section, SEC_IS_COMMON, BFD_COM_SECTION_NAME, 0);
-STD_SECTION (bfd_und_section, 0, BFD_UND_SECTION_NAME, 1);
-STD_SECTION (bfd_abs_section, 0, BFD_ABS_SECTION_NAME, 2);
-STD_SECTION (bfd_ind_section, 0, BFD_IND_SECTION_NAME, 3);
+asection _bfd_std_section[] = {
+ STD_SECTION (BFD_COM_SECTION_NAME, 0, SEC_IS_COMMON),
+ STD_SECTION (BFD_UND_SECTION_NAME, 1, 0),
+ STD_SECTION (BFD_ABS_SECTION_NAME, 2, 0),
+ STD_SECTION (BFD_IND_SECTION_NAME, 3, 0)
+};
#undef STD_SECTION
/* Initialize an entry in the section hash table. */
return TRUE;
}
+unsigned int _bfd_section_id = 0x10; /* id 0 to 3 used by STD_SECTION. */
+
/* Initializes a new section. NEWSECT->NAME is already set. */
static asection *
bfd_section_init (bfd *abfd, asection *newsect)
{
- static int section_id = 0x10; /* id 0 to 3 used by STD_SECTION. */
-
- newsect->id = section_id;
+ newsect->id = _bfd_section_id;
newsect->index = abfd->section_count;
newsect->owner = abfd;
if (! BFD_SEND (abfd, _new_section_hook, (abfd, newsect)))
return NULL;
- section_id++;
+ _bfd_section_id++;
abfd->section_count++;
bfd_section_list_append (abfd, newsect);
return newsect;
abfd->section_count = 0;
memset (abfd->section_htab.table, 0,
abfd->section_htab.size * sizeof (struct bfd_hash_entry *));
+ abfd->section_htab.count = 0;
}
/*
asection *bfd_get_section_by_name (bfd *abfd, const char *name);
DESCRIPTION
- Run through @var{abfd} and return the one of the
- <<asection>>s whose name matches @var{name}, otherwise <<NULL>>.
- @xref{Sections}, for more information.
-
- This should only be used in special cases; the normal way to process
- all sections of a given name is to use <<bfd_map_over_sections>> and
- <<strcmp>> on the name (or better yet, base it on the section flags
- or something else) for each section.
+ Return the most recently created section attached to @var{abfd}
+ named @var{name}. Return NULL if no such section exists.
*/
asection *
return NULL;
}
+/*
+FUNCTION
+ bfd_get_next_section_by_name
+
+SYNOPSIS
+ asection *bfd_get_next_section_by_name (bfd *ibfd, asection *sec);
+
+DESCRIPTION
+ Given @var{sec} is a section returned by @code{bfd_get_section_by_name},
+ return the next most recently created section attached to the same
+ BFD with the same name, or if no such section exists in the same BFD and
+ IBFD is non-NULL, the next section with the same name in any input
+ BFD following IBFD. Return NULL on finding no section.
+*/
+
+asection *
+bfd_get_next_section_by_name (bfd *ibfd, asection *sec)
+{
+ struct section_hash_entry *sh;
+ const char *name;
+ unsigned long hash;
+
+ sh = ((struct section_hash_entry *)
+ ((char *) sec - offsetof (struct section_hash_entry, section)));
+
+ hash = sh->root.hash;
+ name = sec->name;
+ for (sh = (struct section_hash_entry *) sh->root.next;
+ sh != NULL;
+ sh = (struct section_hash_entry *) sh->root.next)
+ if (sh->root.hash == hash
+ && strcmp (sh->root.string, name) == 0)
+ return &sh->section;
+
+ if (ibfd != NULL)
+ {
+ while ((ibfd = ibfd->link.next) != NULL)
+ {
+ asection *s = bfd_get_section_by_name (ibfd, name);
+ if (s != NULL)
+ return s;
+ }
+ }
+
+ return NULL;
+}
+
+/*
+FUNCTION
+ bfd_get_linker_section
+
+SYNOPSIS
+ asection *bfd_get_linker_section (bfd *abfd, const char *name);
+
+DESCRIPTION
+ Return the linker created section attached to @var{abfd}
+ named @var{name}. Return NULL if no such section exists.
+*/
+
+asection *
+bfd_get_linker_section (bfd *abfd, const char *name)
+{
+ asection *sec = bfd_get_section_by_name (abfd, name);
+
+ while (sec != NULL && (sec->flags & SEC_LINKER_CREATED) == 0)
+ sec = bfd_get_next_section_by_name (NULL, sec);
+ return sec;
+}
+
/*
FUNCTION
bfd_get_section_by_name_if
return NULL;
hash = sh->root.hash;
- do
- {
- if ((*operation) (abfd, &sh->section, user_storage))
- return &sh->section;
- sh = (struct section_hash_entry *) sh->root.next;
- }
- while (sh != NULL && sh->root.hash == hash
- && strcmp (sh->root.string, name) == 0);
+ for (; sh != NULL; sh = (struct section_hash_entry *) sh->root.next)
+ if (sh->root.hash == hash
+ && strcmp (sh->root.string, name) == 0
+ && (*operation) (abfd, &sh->section, user_storage))
+ return &sh->section;
return NULL;
}
char *sname;
len = strlen (templat);
- sname = bfd_malloc (len + 8);
+ sname = (char *) bfd_malloc (len + 8);
if (sname == NULL)
return NULL;
memcpy (sname, templat, len);
struct section_hash_entry *sh;
asection *newsect;
- if (abfd->output_has_begun)
+ if (abfd == NULL || name == NULL || abfd->output_has_begun)
{
bfd_set_error (bfd_error_invalid_operation);
return NULL;
bfd_set_section_flags
SYNOPSIS
- bfd_boolean bfd_set_section_flags
- (bfd *abfd, asection *sec, flagword flags);
+ bfd_boolean bfd_set_section_flags (asection *sec, flagword flags);
DESCRIPTION
- Set the attributes of the section @var{sec} in the BFD
- @var{abfd} to the value @var{flags}. Return <<TRUE>> on success,
- <<FALSE>> on error. Possible error returns are:
+ Set the attributes of the section @var{sec} to the value @var{flags}.
+ Return <<TRUE>> on success, <<FALSE>> on error. Possible error
+ returns are:
o <<bfd_error_invalid_operation>> -
The section cannot have one or more of the attributes
*/
bfd_boolean
-bfd_set_section_flags (bfd *abfd ATTRIBUTE_UNUSED,
- sec_ptr section,
- flagword flags)
+bfd_set_section_flags (asection *section, flagword flags)
{
section->flags = flags;
return TRUE;
}
+/*
+FUNCTION
+ bfd_rename_section
+
+SYNOPSIS
+ void bfd_rename_section
+ (asection *sec, const char *newname);
+
+DESCRIPTION
+ Rename section @var{sec} to @var{newname}.
+*/
+
+void
+bfd_rename_section (asection *sec, const char *newname)
+{
+ struct section_hash_entry *sh;
+
+ sh = (struct section_hash_entry *)
+ ((char *) sec - offsetof (struct section_hash_entry, section));
+ sh->section.name = newname;
+ bfd_hash_rename (&sec->owner->section_htab, newname, &sh->root);
+}
+
/*
FUNCTION
bfd_map_over_sections
This is the preferred method for iterating over sections; an
alternative would be to use a loop:
-| section *p;
+| asection *p;
| for (p = abfd->sections; p != NULL; p = p->next)
| func (abfd, p, ...)
bfd_set_section_size
SYNOPSIS
- bfd_boolean bfd_set_section_size
- (bfd *abfd, asection *sec, bfd_size_type val);
+ bfd_boolean bfd_set_section_size (asection *sec, bfd_size_type val);
DESCRIPTION
Set @var{sec} to the size @var{val}. If the operation is
*/
bfd_boolean
-bfd_set_section_size (bfd *abfd, sec_ptr ptr, bfd_size_type val)
+bfd_set_section_size (asection *sec, bfd_size_type val)
{
/* Once you've started writing to any section you cannot create or change
the size of any others. */
- if (abfd->output_has_begun)
+ if (sec->owner == NULL || sec->owner->output_has_begun)
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
- ptr->size = val;
+ sec->size = val;
return TRUE;
}
DESCRIPTION
Sets the contents of the section @var{section} in BFD
- @var{abfd} to the data starting in memory at @var{data}. The
- data is written to the output section starting at offset
+ @var{abfd} to the data starting in memory at @var{location}.
+ The data is written to the output section starting at offset
@var{offset} for @var{count} octets.
- Normally <<TRUE>> is returned, else <<FALSE>>. Possible error
- returns are:
+ Normally <<TRUE>> is returned, but <<FALSE>> is returned if
+ there was an error. Possible error returns are:
o <<bfd_error_no_contents>> -
The output section does not have the <<SEC_HAS_CONTENTS>>
attribute, so nothing can be written to it.
- o and some more too
+ o <<bfd_error_bad_value>> -
+ The section is unable to contain all of the data.
+ o <<bfd_error_invalid_operation>> -
+ The BFD is not writeable.
+ o and some more too.
This routine is front end to the back end function
<<_bfd_set_section_contents>>.
{
bfd_size_type sz;
- if (!(bfd_get_section_flags (abfd, section) & SEC_HAS_CONTENTS))
+ if (!(bfd_section_flags (section) & SEC_HAS_CONTENTS))
{
bfd_set_error (bfd_error_no_contents);
return FALSE;
return TRUE;
}
- sz = section->rawsize ? section->rawsize : section->size;
+ if (abfd->direction != write_direction && section->rawsize != 0)
+ sz = section->rawsize;
+ else
+ sz = section->size;
if ((bfd_size_type) offset > sz
|| count > sz
|| offset + count > sz
if ((section->flags & SEC_IN_MEMORY) != 0)
{
- memcpy (location, section->contents + offset, (size_t) count);
+ if (section->contents == NULL)
+ {
+ /* This can happen because of errors earlier on in the linking process.
+ We do not want to seg-fault here, so clear the flag and return an
+ error code. */
+ section->flags &= ~ SEC_IN_MEMORY;
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
+
+ memmove (location, section->contents + offset, (size_t) count);
return TRUE;
}
bfd_boolean
bfd_malloc_and_get_section (bfd *abfd, sec_ptr sec, bfd_byte **buf)
{
- bfd_size_type sz = sec->rawsize ? sec->rawsize : sec->size;
- bfd_byte *p = NULL;
-
- *buf = p;
- if (sz == 0)
- return TRUE;
-
- p = bfd_malloc (sec->rawsize > sec->size ? sec->rawsize : sec->size);
- if (p == NULL)
- return FALSE;
- *buf = p;
-
- return bfd_get_section_contents (abfd, sec, p, 0, sz);
+ *buf = NULL;
+ return bfd_get_full_section_contents (abfd, sec, buf);
}
/*
FUNCTION
Not enough memory exists to create private data for @var{osec}.
.#define bfd_copy_private_section_data(ibfd, isection, obfd, osection) \
-. BFD_SEND (obfd, _bfd_copy_private_section_data, \
-. (ibfd, isection, obfd, osection))
+. BFD_SEND (obfd, _bfd_copy_private_section_data, \
+. (ibfd, isection, obfd, osection))
*/
/*
return FALSE;
}
+/*
+FUNCTION
+ bfd_generic_group_name
+
+SYNOPSIS
+ const char *bfd_generic_group_name (bfd *, const asection *sec);
+
+DESCRIPTION
+ Returns group name if @var{sec} is a member of a group.
+*/
+
+const char *
+bfd_generic_group_name (bfd *abfd ATTRIBUTE_UNUSED,
+ const asection *sec ATTRIBUTE_UNUSED)
+{
+ return NULL;
+}
+
/*
FUNCTION
bfd_generic_discard_group
{
return TRUE;
}
+
+bfd_boolean
+_bfd_nowrite_set_section_contents (bfd *abfd,
+ sec_ptr section ATTRIBUTE_UNUSED,
+ const void *location ATTRIBUTE_UNUSED,
+ file_ptr offset ATTRIBUTE_UNUSED,
+ bfd_size_type count ATTRIBUTE_UNUSED)
+{
+ return _bfd_bool_bfd_false_error (abfd);
+}