X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Fsection.c;h=17f5b4c3d83f10f548c6366d05df3722f3c8a369;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=3a70ccf994c193200606725e391090837b13dcfb;hpb=b9c361e0ad33f2c841067fd4bf0959a72ad5a265;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/section.c b/bfd/section.c index 3a70ccf994..17f5b4c3d8 100644 --- a/bfd/section.c +++ b/bfd/section.c @@ -1,8 +1,5 @@ /* 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, 2008, 2009, 2010, 2011, - 2012 - Free Software Foundation, Inc. + Copyright (C) 1990-2020 Free Software Foundation, Inc. Written by Cygnus Support. This file is part of BFD, the Binary File Descriptor library. @@ -68,10 +65,7 @@ SUBSECTION data in place until a <> 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 @@ -158,10 +152,14 @@ CODE_FRAGMENT . const char *name; . . {* A unique sequence number. *} -. int id; +. unsigned int id; +. +. {* A unique section number which can be used by assembler to +. distinguish different sections with the same section name. *} +. unsigned int section_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; @@ -174,31 +172,31 @@ CODE_FRAGMENT . 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 @@ -210,75 +208,72 @@ CODE_FRAGMENT . 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 . <> | <>; a debug section could be . <> *} -.#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 0xc0000 +.#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 0x40000 +.#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. *} @@ -294,28 +289,32 @@ CODE_FRAGMENT . 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 0x100000 +.#define SEC_LINKER_CREATED 0x100000 +. +. {* This section contains a section ID to distinguish different +. sections with the same section name. *} +.#define SEC_ASSEMBLER_SECTION_ID 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 0x200000 +.#define SEC_KEEP 0x200000 . . {* This section contains "short" data, and should be placed . "near" the GP. *} -.#define SEC_SMALL_DATA 0x400000 +.#define SEC_SMALL_DATA 0x400000 . . {* Attempt to merge identical entities in the section. . Entity size is given in the entsize field. *} -.#define SEC_MERGE 0x800000 +.#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 0x1000000 +.#define SEC_STRINGS 0x1000000 . . {* This section contains data about section groups. *} -.#define SEC_GROUP 0x2000000 +.#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 @@ -326,32 +325,51 @@ CODE_FRAGMENT . 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 0x4000000 +.#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 +.#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 0x8000000 +.#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 0x10000000 +.#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 0x20000000 +.#define SEC_TIC54X_CLINK 0x20000000 +. +. {* This section contains vliw code. This is for Toshiba MeP only. *} +.#define SEC_MEP_VLIW 0x20000000 +. +. {* All symbols, sizes and relocations in this section are octets +. instead of bytes. Required for DWARF debug sections as DWARF +. information is organized in octets, not bytes. *} +.#define SEC_ELF_OCTETS 0x40000000 . . {* Indicate that section has the no read flag set. This happens . when memory read flag isn't set. *} -.#define SEC_COFF_NOREAD 0x40000000 +.#define SEC_COFF_NOREAD 0x40000000 +. +. {* Indicate that section has the purecode flag set. *} +.#define SEC_ELF_PURECODE 0x80000000 . . {* End of section flags. *} . @@ -388,6 +406,8 @@ CODE_FRAGMENT .#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; @@ -417,7 +437,7 @@ CODE_FRAGMENT . 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; @@ -524,28 +544,114 @@ CODE_FRAGMENT . {* Early in the link process, map_head and map_tail are used to build . a list of input sections attached to an output section. Later, . output sections use these fields for a list of bfd_link_order -. structs. *} +. structs. The linked_to_symbol_name field is for ELF assembler +. internal use. *} . union { . struct bfd_link_order *link_order; . struct bfd_section *s; +. const char *linked_to_symbol_name; . } map_head, map_tail; +. {* Points to the output section this section is already assigned to, if any. +. This is used when support for non-contiguous memory regions is enabled. *} +. struct bfd_section *already_assigned; +. .} asection; . .{* Relax table contains information about instructions which can -. be removed by relaxation -- replacing a long address with a +. 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; .}; . +.static inline const char * +.bfd_section_name (const asection *sec) +.{ +. return sec->name; +.} +. +.static inline bfd_size_type +.bfd_section_size (const asection *sec) +.{ +. return sec->size; +.} +. +.static inline bfd_vma +.bfd_section_vma (const asection *sec) +.{ +. return sec->vma; +.} +. +.static inline bfd_vma +.bfd_section_lma (const asection *sec) +.{ +. return sec->lma; +.} +. +.static inline unsigned int +.bfd_section_alignment (const asection *sec) +.{ +. return sec->alignment_power; +.} +. +.static inline flagword +.bfd_section_flags (const asection *sec) +.{ +. return sec->flags; +.} +. +.static inline void * +.bfd_section_userdata (const asection *sec) +.{ +. return sec->userdata; +.} +.static inline bfd_boolean +.bfd_is_com_section (const asection *sec) +.{ +. return (sec->flags & SEC_IS_COMMON) != 0; +.} +. +.{* 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. *} -.extern asection std_section[4]; +.extern asection _bfd_std_section[4]; . .#define BFD_ABS_SECTION_NAME "*ABS*" .#define BFD_UND_SECTION_NAME "*UND*" @@ -553,166 +659,103 @@ CODE_FRAGMENT .#define BFD_IND_SECTION_NAME "*IND*" . .{* Pointer to the common section. *} -.#define bfd_com_section_ptr (&std_section[0]) +.#define bfd_com_section_ptr (&_bfd_std_section[0]) .{* Pointer to the undefined section. *} -.#define bfd_und_section_ptr (&std_section[1]) +.#define bfd_und_section_ptr (&_bfd_std_section[1]) .{* Pointer to the absolute section. *} -.#define bfd_abs_section_ptr (&std_section[2]) +.#define bfd_abs_section_ptr (&_bfd_std_section[2]) .{* Pointer to the indirect section. *} -.#define bfd_ind_section_ptr (&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) \ -. ( ((SEC) == bfd_abs_section_ptr) \ -. || ((SEC) == bfd_und_section_ptr) \ -. || ((SEC) == bfd_com_section_ptr) \ -. || ((SEC) == bfd_ind_section_ptr)) -. -.{* Macros to handle insertion and deletion of a bfd's sections. These -. only handle the list pointers, ie. do not adjust section_count, -. target_index etc. *} -.#define bfd_section_list_remove(ABFD, S) \ -. do \ -. { \ -. asection *_s = S; \ -. asection *_next = _s->next; \ -. asection *_prev = _s->prev; \ -. if (_prev) \ -. _prev->next = _next; \ -. else \ -. (ABFD)->sections = _next; \ -. if (_next) \ -. _next->prev = _prev; \ -. else \ -. (ABFD)->section_last = _prev; \ -. } \ -. while (0) -.#define bfd_section_list_append(ABFD, S) \ -. do \ -. { \ -. asection *_s = S; \ -. bfd *_abfd = ABFD; \ -. _s->next = NULL; \ -. if (_abfd->section_last) \ -. { \ -. _s->prev = _abfd->section_last; \ -. _abfd->section_last->next = _s; \ -. } \ -. else \ -. { \ -. _s->prev = NULL; \ -. _abfd->sections = _s; \ -. } \ -. _abfd->section_last = _s; \ -. } \ -. while (0) -.#define bfd_section_list_prepend(ABFD, S) \ -. do \ -. { \ -. asection *_s = S; \ -. bfd *_abfd = ABFD; \ -. _s->prev = NULL; \ -. if (_abfd->sections) \ -. { \ -. _s->next = _abfd->sections; \ -. _abfd->sections->prev = _s; \ -. } \ -. else \ -. { \ -. _s->next = NULL; \ -. _abfd->section_last = _s; \ -. } \ -. _abfd->sections = _s; \ -. } \ -. while (0) -.#define bfd_section_list_insert_after(ABFD, A, S) \ -. do \ -. { \ -. asection *_a = A; \ -. asection *_s = S; \ -. asection *_next = _a->next; \ -. _s->next = _next; \ -. _s->prev = _a; \ -. _a->next = _s; \ -. if (_next) \ -. _next->prev = _s; \ -. else \ -. (ABFD)->section_last = _s; \ -. } \ -. while (0) -.#define bfd_section_list_insert_before(ABFD, B, S) \ -. do \ -. { \ -. asection *_b = B; \ -. asection *_s = S; \ -. asection *_prev = _b->prev; \ -. _s->prev = _prev; \ -. _s->next = _b; \ -. _b->prev = _s; \ -. if (_prev) \ -. _prev->next = _s; \ -. else \ -. (ABFD)->sections = _s; \ -. } \ -. while (0) -.#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) \ -. {* name, id, index, next, prev, flags, user_set_vma, *} \ -. { NAME, IDX, 0, NULL, NULL, FLAGS, 0, \ +.#define bfd_ind_section_ptr (&_bfd_std_section[3]) +. +.static inline bfd_boolean +.bfd_is_und_section (const asection *sec) +.{ +. return sec == bfd_und_section_ptr; +.} +. +.static inline bfd_boolean +.bfd_is_abs_section (const asection *sec) +.{ +. return sec == bfd_abs_section_ptr; +.} +. +.static inline bfd_boolean +.bfd_is_ind_section (const asection *sec) +.{ +. return sec == bfd_ind_section_ptr; +.} +. +.static inline bfd_boolean +.bfd_is_const_section (const asection *sec) +.{ +. return (sec >= _bfd_std_section +. && sec < _bfd_std_section + (sizeof (_bfd_std_section) +. / sizeof (_bfd_std_section[0]))); +.} +. +.{* Return TRUE if input section SEC has been discarded. *} +.static inline bfd_boolean +.discarded_section (const asection *sec) +.{ +. return (!bfd_is_abs_section (sec) +. && bfd_is_abs_section (sec->output_section) +. && sec->sec_info_type != SEC_INFO_TYPE_MERGE +. && sec->sec_info_type != SEC_INFO_TYPE_JUST_SYMS); +.} +. +.#define BFD_FAKE_SECTION(SEC, SYM, NAME, IDX, FLAGS) \ +. {* name, id, section_id, index, next, prev, flags, user_set_vma, *} \ +. { NAME, IDX, 0, 0, NULL, NULL, FLAGS, 0, \ . \ -. {* linker_mark, linker_has_input, gc_mark, decompress_status, *} \ +. {* linker_mark, linker_has_input, gc_mark, decompress_status, *} \ . 0, 0, 1, 0, \ . \ -. {* segment_mark, sec_info_type, use_rela_p, *} \ +. {* segment_mark, sec_info_type, use_rela_p, *} \ . 0, 0, 0, \ . \ -. {* sec_flg0, sec_flg1, sec_flg2, sec_flg3, sec_flg4, sec_flg5, *} \ +. {* sec_flg0, sec_flg1, sec_flg2, sec_flg3, sec_flg4, sec_flg5, *} \ . 0, 0, 0, 0, 0, 0, \ . \ -. {* vma, lma, size, rawsize, compressed_size, relax, relax_count, *} \ +. {* vma, lma, size, rawsize, compressed_size, relax, relax_count, *} \ . 0, 0, 0, 0, 0, 0, 0, \ . \ -. {* output_offset, output_section, alignment_power, *} \ +. {* output_offset, output_section, alignment_power, *} \ . 0, &SEC, 0, \ . \ -. {* relocation, orelocation, reloc_count, filepos, rel_filepos, *} \ +. {* relocation, orelocation, reloc_count, filepos, rel_filepos, *} \ . NULL, NULL, 0, 0, 0, \ . \ -. {* line_filepos, userdata, contents, lineno, lineno_count, *} \ +. {* line_filepos, userdata, contents, lineno, lineno_count, *} \ . 0, NULL, NULL, NULL, 0, \ . \ -. {* entsize, kept_section, moving_line_filepos, *} \ -. 0, NULL, 0, \ +. {* entsize, kept_section, moving_line_filepos, *} \ +. 0, NULL, 0, \ . \ -. {* target_index, used_by_bfd, constructor_chain, owner, *} \ +. {* target_index, used_by_bfd, constructor_chain, owner, *} \ . 0, NULL, NULL, NULL, \ . \ -. {* symbol, symbol_ptr_ptr, *} \ +. {* symbol, symbol_ptr_ptr, *} \ . (struct bfd_symbol *) SYM, &SEC.symbol, \ . \ -. {* map_head, map_tail *} \ -. { NULL }, { NULL } \ +. {* map_head, map_tail, already_assigned *} \ +. { NULL }, { 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, SECTION, { 0 }} -#else -#define GLOBAL_SYM_INIT(NAME, SECTION) \ - { 0, NAME, 0, BSF_SECTION_SYM, SECTION } -#endif - /* These symbols are global, not specific to any BFD. Therefore, anything that tries to change them is broken, and should be repaired. */ @@ -725,9 +768,9 @@ static const asymbol global_syms[] = }; #define STD_SECTION(NAME, IDX, FLAGS) \ - BFD_FAKE_SECTION(std_section[IDX], FLAGS, &global_syms[IDX], NAME, IDX) + BFD_FAKE_SECTION(_bfd_std_section[IDX], &global_syms[IDX], NAME, IDX, FLAGS) -asection std_section[] = { +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), @@ -785,21 +828,21 @@ _bfd_generic_new_section_hook (bfd *abfd, asection *newsect) 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; @@ -835,6 +878,7 @@ bfd_section_list_clear (bfd *abfd) abfd->section_count = 0; memset (abfd->section_htab.table, 0, abfd->section_htab.size * sizeof (struct bfd_hash_entry *)); + abfd->section_htab.count = 0; } /* @@ -845,14 +889,8 @@ SYNOPSIS asection *bfd_get_section_by_name (bfd *abfd, const char *name); DESCRIPTION - Run through @var{abfd} and return the one of the - <>s whose name matches @var{name}, otherwise <>. - @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 <> and - <> 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 * @@ -867,6 +905,75 @@ bfd_get_section_by_name (bfd *abfd, const char *name) 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 @@ -906,14 +1013,11 @@ bfd_get_section_by_name_if (bfd *abfd, const char *name, 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; } @@ -1140,7 +1244,7 @@ bfd_make_section_with_flags (bfd *abfd, const char *name, 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; @@ -1193,13 +1297,12 @@ FUNCTION 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 <> on success, - <> on error. Possible error returns are: + Set the attributes of the section @var{sec} to the value @var{flags}. + Return <> on success, <> on error. Possible error + returns are: o <> - The section cannot have one or more of the attributes @@ -1209,9 +1312,7 @@ DESCRIPTION */ 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; @@ -1223,21 +1324,21 @@ FUNCTION SYNOPSIS void bfd_rename_section - (bfd *abfd, asection *sec, const char *newname); + (asection *sec, const char *newname); DESCRIPTION - Rename section @var{sec} in @var{abfd} to @var{newname}. + Rename section @var{sec} to @var{newname}. */ void -bfd_rename_section (bfd *abfd, sec_ptr sec, const char *newname) +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 (&abfd->section_htab, newname, &sh->root); + bfd_hash_rename (&sec->owner->section_htab, newname, &sh->root); } /* @@ -1260,7 +1361,7 @@ DESCRIPTION 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, ...) @@ -1321,8 +1422,7 @@ FUNCTION 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 @@ -1335,18 +1435,18 @@ DESCRIPTION */ 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; } @@ -1361,16 +1461,20 @@ SYNOPSIS 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 <> is returned, else <>. Possible error - returns are: + Normally <> is returned, but <> is returned if + there was an error. Possible error returns are: o <> - The output section does not have the <> attribute, so nothing can be written to it. - o and some more too + o <> - + The section is unable to contain all of the data. + o <> - + The BFD is not writeable. + o and some more too. This routine is front end to the back end function <<_bfd_set_section_contents>>. @@ -1386,7 +1490,7 @@ bfd_set_section_contents (bfd *abfd, { 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; @@ -1494,8 +1598,8 @@ bfd_get_section_contents (bfd *abfd, bfd_set_error (bfd_error_invalid_operation); return FALSE; } - - memcpy (location, section->contents + offset, (size_t) count); + + memmove (location, section->contents + offset, (size_t) count); return TRUE; } @@ -1540,8 +1644,8 @@ DESCRIPTION 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)) */ /* @@ -1562,6 +1666,24 @@ bfd_generic_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, 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 @@ -1579,3 +1701,13 @@ bfd_generic_discard_group (bfd *abfd ATTRIBUTE_UNUSED, { 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); +}