X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Fsection.c;h=55a09f9a2b714dfdfa62a148950fdc009e3fa8a7;hb=1e490350fff9619fd30dbea910412308eb7c8661;hp=02ae2188458bb89e708ea9a7f87b7cea4d641967;hpb=9783e04a6438e7d81c48d202b2c1bfab315a91f8;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/section.c b/bfd/section.c index 02ae218845..55a09f9a2b 100644 --- a/bfd/section.c +++ b/bfd/section.c @@ -1,5 +1,6 @@ /* Object file "section" support for the BFD library. - Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc. + Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 1997 + Free Software Foundation, Inc. Written by Cygnus Support. This file is part of BFD, the Binary File Descriptor library. @@ -16,7 +17,7 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software -Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* SECTION @@ -46,7 +47,7 @@ SUBSECTION Each section has a name which describes the section in the outside world---for example, <> would contain at least - three sections, called <<.text>>, <<.data>> and <<.bss>>. + three sections, called <<.text>>, <<.data>> and <<.bss>>. Names need not be unique; for example a COFF file may have several sections named <<.data>>. @@ -78,7 +79,7 @@ SUBSECTION To write a new object style BFD, the various sections to be written have to be created. They are attached to the BFD in the same way as input sections; data is written to the - sections using <>. + sections using <>. Any program that creates or combines sections (e.g., the assembler and linker) must use the <> fields <> and @@ -149,7 +150,7 @@ SUBSECTION CODE_FRAGMENT . -.typedef struct sec +.typedef struct sec .{ . {* The name of the section; the name isn't a copy, the pointer is . the same as that passed to bfd_make_section. *} @@ -158,7 +159,7 @@ CODE_FRAGMENT . . {* Which section is it; 0..nth. *} . -. int index; +. int index; . . {* The next section in the list belonging to the BFD, or NULL. *} . @@ -166,7 +167,7 @@ CODE_FRAGMENT . . {* The field flags contains attributes of the section. Some . flags are read in from the object file, and some are -. synthesized from other information. *} +. synthesized from other information. *} . . flagword flags; . @@ -176,7 +177,7 @@ CODE_FRAGMENT . This is clear for a section containing debug information . only. *} .#define SEC_ALLOC 0x001 -. +. . {* Tells the OS to load the section from the file when loading. . This is clear for a .bss section. *} .#define SEC_LOAD 0x002 @@ -214,7 +215,7 @@ CODE_FRAGMENT . standard data. *} .#define SEC_CONSTRUCTOR 0x100 . -. {* The section is a constuctor, and should be placed at the +. {* The section is a constructor, and should be placed at the . end of the text, data, or bss section(?). *} .#define SEC_CONSTRUCTOR_TEXT 0x1100 .#define SEC_CONSTRUCTOR_DATA 0x2100 @@ -226,19 +227,25 @@ CODE_FRAGMENT .#define SEC_HAS_CONTENTS 0x200 . . {* An instruction to the linker to not output the section -. even if it has information which would normally be written. *} +. even if it has information which would normally be written. *} .#define SEC_NEVER_LOAD 0x400 . -. {* The section is a shared library section. The linker must leave -. these completely alone, as the vma and size are used when -. the executable is loaded. *} -.#define SEC_SHARED_LIBRARY 0x800 -. -. {* The section is a common section (symbols may be defined +. {* The section is a COFF shared library section. This flag is +. only for the linker. If this type of section appears in +. the input file, the linker must copy it to the output file +. without changing the vma or size. FIXME: Although this +. was originally intended to be general, it really is COFF +. specific (and the flag was renamed to indicate this). It +. 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 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), but ECOFF has two. *} +. translate to bfd_com_section_ptr), but ECOFF has two. *} .#define SEC_IS_COMMON 0x8000 . . {* The section contains only debugging information. For @@ -247,8 +254,77 @@ CODE_FRAGMENT . discarded. *} .#define SEC_DEBUGGING 0x10000 . +. {* 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 0x20000 +. +. {* 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 0x40000 +. +. {* The contents of this section are to be sorted by the +. based on the address specified in the associated symbol +. table. *} +.#define SEC_SORT_ENTRIES 0x80000 +. +. {* 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 0x100000 +. +. {* If SEC_LINK_ONCE is set, this bitfield describes how the linker +. should handle duplicate sections. *} +.#define SEC_LINK_DUPLICATES 0x600000 +. +. {* This value for SEC_LINK_DUPLICATES means that duplicate +. sections with the same name should simply be discarded. *} +.#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 0x200000 +. +. {* 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 0x400000 +. +. {* This value for SEC_LINK_DUPLICATES means that the linker +. should warn if any duplicate sections contain different +. contents. *} +.#define SEC_LINK_DUPLICATES_SAME_CONTENTS 0x600000 +. +. {* This section was created by the linker as part of dynamic +. 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 0x800000 +. +. {* This section should not be subject to garbage collection. *} +.#define SEC_KEEP 0x1000000 +. . {* End of section flags. *} . +. {* Some internal packed boolean fields. *} +. +. {* See the vma field. *} +. unsigned int user_set_vma : 1; +. +. {* Whether relocations have been processed. *} +. unsigned int reloc_done : 1; +. +. {* A mark flag used by some of the linker backends. *} +. unsigned int linker_mark : 1; +. +. {* A mark flag used by some linker backends for garbage collection. *} +. unsigned int gc_mark : 1; +. +. {* End of internal packed boolean fields. *} +. . {* The virtual memory address of the section - where it will be . at run time. The symbols are relocated against this. The . user_set_vma flag is maintained by bfd; if it's not set, the @@ -257,7 +333,6 @@ CODE_FRAGMENT . target and various flags). *} . . bfd_vma vma; -. boolean user_set_vma; . . {* The load address of the section - where it would be in a . rom image; really only used for writing section header @@ -269,13 +344,13 @@ CODE_FRAGMENT . contains a value even if the section has no contents (e.g., the . size of <<.bss>>). This will be filled in after relocation *} . -. bfd_size_type _cooked_size; +. bfd_size_type _cooked_size; . . {* The original size on disk of the section, in bytes. Normally this . value is the same as the size, but if some relaxing has . been done, then this value will be bigger. *} . -. bfd_size_type _raw_size; +. bfd_size_type _raw_size; . . {* If this section is going to be output, then this value is the . offset into the output section of the first byte in the input @@ -312,8 +387,8 @@ CODE_FRAGMENT . . {* File position of section data *} . -. file_ptr filepos; -. +. file_ptr filepos; +. . {* File position of relocation info *} . . file_ptr rel_filepos; @@ -326,12 +401,14 @@ CODE_FRAGMENT . . PTR userdata; . -. struct lang_output_section *otheruserdata; +. {* If the SEC_IN_MEMORY flag is set, this points to the actual +. contents. *} +. unsigned char *contents; . . {* Attached line number information *} . . alent *lineno; -. +. . {* Number of line number records *} . . unsigned int lineno_count; @@ -356,37 +433,44 @@ CODE_FRAGMENT . . bfd *owner; . -. boolean reloc_done; . {* A symbol which points at this section only *} -. struct symbol_cache_entry *symbol; +. struct symbol_cache_entry *symbol; . struct symbol_cache_entry **symbol_ptr_ptr; . . struct bfd_link_order *link_order_head; . struct bfd_link_order *link_order_tail; .} asection ; . -. . {* 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. *} +. these sections. New code should use the section_ptr macros rather +. than referring directly to the const sections. The const sections +. may eventually vanish. *} .#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; +.extern const 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; +.extern const 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; +.extern const asection bfd_com_section; +.#define bfd_com_section_ptr ((asection *) &bfd_com_section) . {* Pointer to the indirect section *} -.extern asection bfd_ind_section; -. -.extern struct symbol_cache_entry *bfd_abs_symbol; -.extern struct symbol_cache_entry *bfd_com_symbol; -.extern struct symbol_cache_entry *bfd_und_symbol; -.extern struct symbol_cache_entry *bfd_ind_symbol; +.extern const asection bfd_ind_section; +.#define bfd_ind_section_ptr ((asection *) &bfd_ind_section) +.#define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr) +. +.extern const struct symbol_cache_entry * const bfd_abs_symbol; +.extern const struct symbol_cache_entry * const bfd_com_symbol; +.extern const struct symbol_cache_entry * const bfd_und_symbol; +.extern const struct symbol_cache_entry * const bfd_ind_symbol; .#define bfd_get_section_size_before_reloc(section) \ . (section->reloc_done ? (abort(),1): (section)->_raw_size) .#define bfd_get_section_size_after_reloc(section) \ @@ -395,21 +479,24 @@ CODE_FRAGMENT /* 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[] = { - /* the_bfd, name, value, attr, section [, udata] */ - { 0, BFD_COM_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_com_section }, - { 0, BFD_UND_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_und_section }, - { 0, BFD_ABS_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_abs_section }, - { 0, BFD_IND_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_ind_section }, +static const asymbol global_syms[] = +{ + /* the_bfd, name, value, attr, section [, udata] */ + {0, BFD_COM_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_com_section}, + {0, BFD_UND_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_und_section}, + {0, BFD_ABS_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_abs_section}, + {0, BFD_IND_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_ind_section}, }; #define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \ - asymbol *SYM = (asymbol *) &global_syms[IDX]; \ - asection SEC = { NAME, 0, 0, FLAGS, 0, 0, (boolean) 0, 0, 0, 0, &SEC,\ - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (boolean) 0, \ - (asymbol *) &global_syms[IDX], &SYM, } - -STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol, BFD_COM_SECTION_NAME, 0); + const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \ + const asection SEC = \ + { NAME, 0, 0, FLAGS, 0, 0, 0, 0, 0, 0, 0, 0, (asection *) &SEC, \ + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ + (asymbol *) &global_syms[IDX], (asymbol **) &SYM, 0, 0 } + +STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol, + BFD_COM_SECTION_NAME, 0); STD_SECTION (bfd_und_section, 0, bfd_und_symbol, BFD_UND_SECTION_NAME, 1); STD_SECTION (bfd_abs_section, 0, bfd_abs_symbol, BFD_ABS_SECTION_NAME, 2); STD_SECTION (bfd_ind_section, 0, bfd_ind_symbol, BFD_IND_SECTION_NAME, 3); @@ -426,7 +513,7 @@ These are the functions exported by the section handling part of BFD. */ /* -FUNCTION +FUNCTION bfd_get_section_by_name SYNOPSIS @@ -444,14 +531,15 @@ DESCRIPTION */ asection * -DEFUN(bfd_get_section_by_name,(abfd, name), - bfd *abfd AND - CONST char *name) +bfd_get_section_by_name (abfd, name) + bfd *abfd; + CONST char *name; { asection *sect; for (sect = abfd->sections; sect != NULL; sect = sect->next) - if (!strcmp (sect->name, name)) return sect; + if (!strcmp (sect->name, name)) + return sect; return NULL; } @@ -474,23 +562,23 @@ DESCRIPTION before it was rewritten.... Possible errors are: - o <> - + o <> - If output has already started for this BFD. - o <> - - If obstack alloc fails. + o <> - + If memory allocation fails. */ asection * -DEFUN(bfd_make_section_old_way,(abfd, name), - bfd *abfd AND - CONST char * name) +bfd_make_section_old_way (abfd, name) + bfd *abfd; + CONST char *name; { - asection *sec = bfd_get_section_by_name(abfd, name); - if (sec == (asection *)NULL) + asection *sec = bfd_get_section_by_name (abfd, name); + if (sec == (asection *) NULL) { - sec = bfd_make_section(abfd, name); + sec = bfd_make_section (abfd, name); } return sec; } @@ -505,11 +593,11 @@ SYNOPSIS DESCRIPTION Create a new empty section called @var{name} and attach it to the end of the chain of sections for @var{abfd}. Create a new section even if there - is already a section with that name. + is already a section with that name. Return <> and set <> on error; possible errors are: - o <> - If output has already started for @var{abfd}. - o <> - If obstack alloc fails. + o <> - If output has already started for @var{abfd}. + o <> - If memory allocation fails. */ sec_ptr @@ -519,41 +607,41 @@ bfd_make_section_anyway (abfd, name) { asection *newsect; asection **prev = &abfd->sections; - asection * sect = abfd->sections; + asection *sect = abfd->sections; if (abfd->output_has_begun) { - bfd_error = invalid_operation; + bfd_set_error (bfd_error_invalid_operation); return NULL; } - while (sect) { - prev = §->next; - sect = sect->next; - } + while (sect) + { + prev = §->next; + sect = sect->next; + } - newsect = (asection *) bfd_zalloc(abfd, sizeof (asection)); - if (newsect == NULL) { - bfd_error = no_memory; + newsect = (asection *) bfd_zalloc (abfd, sizeof (asection)); + if (newsect == NULL) return NULL; - } newsect->name = name; newsect->index = abfd->section_count++; newsect->flags = SEC_NO_FLAGS; - newsect->userdata = 0; - newsect->next = (asection *)NULL; - newsect->relocation = (arelent *)NULL; + newsect->userdata = NULL; + newsect->contents = NULL; + newsect->next = (asection *) NULL; + newsect->relocation = (arelent *) NULL; newsect->reloc_count = 0; - newsect->line_filepos =0; + newsect->line_filepos = 0; newsect->owner = abfd; /* Create a symbol whos only job is to point to this section. This is useful for things like relocs which are relative to the base of a section. */ - newsect->symbol = bfd_make_empty_symbol(abfd); - if (!newsect) + newsect->symbol = bfd_make_empty_symbol (abfd); + if (newsect->symbol == NULL) return NULL; newsect->symbol->name = name; newsect->symbol->value = 0; @@ -562,10 +650,11 @@ bfd_make_section_anyway (abfd, name) newsect->symbol_ptr_ptr = &newsect->symbol; - if (BFD_SEND (abfd, _new_section_hook, (abfd, newsect)) != true) { - free (newsect); - return NULL; - } + if (BFD_SEND (abfd, _new_section_hook, (abfd, newsect)) != true) + { + free (newsect); + return NULL; + } *prev = newsect; return newsect; @@ -579,41 +668,43 @@ SYNOPSIS asection *bfd_make_section(bfd *, CONST char *name); DESCRIPTION - Like <>, but return <> (without setting - bfd_error) without changing the section chain if there is already a + Like <>, but return <> (without calling + bfd_set_error ()) without changing the section chain if there is already a section named @var{name}. If there is an error, return <> and set <>. */ -sec_ptr -DEFUN(bfd_make_section,(abfd, name), - bfd *abfd AND - CONST char * name) +asection * +bfd_make_section (abfd, name) + bfd *abfd; + CONST char *name; { - asection * sect = abfd->sections; - - if (strcmp(name, BFD_ABS_SECTION_NAME) == 0) - { - return &bfd_abs_section; - } - if (strcmp(name, BFD_COM_SECTION_NAME) == 0) - { - return &bfd_com_section; - } - if (strcmp(name, BFD_UND_SECTION_NAME) == 0) - { - return &bfd_und_section; - } - - if (strcmp(name, BFD_IND_SECTION_NAME) == 0) - { - return &bfd_ind_section; - } - - while (sect) { - if (!strcmp(sect->name, name)) return NULL; - sect = sect->next; - } + asection *sect = abfd->sections; + + if (strcmp (name, BFD_ABS_SECTION_NAME) == 0) + { + return bfd_abs_section_ptr; + } + if (strcmp (name, BFD_COM_SECTION_NAME) == 0) + { + return bfd_com_section_ptr; + } + if (strcmp (name, BFD_UND_SECTION_NAME) == 0) + { + return bfd_und_section_ptr; + } + + if (strcmp (name, BFD_IND_SECTION_NAME) == 0) + { + return bfd_ind_section_ptr; + } + + while (sect) + { + if (!strcmp (sect->name, name)) + return NULL; + sect = sect->next; + } /* The name is not already used; go ahead and make a new section. */ return bfd_make_section_anyway (abfd, name); @@ -632,7 +723,7 @@ DESCRIPTION @var{abfd} to the value @var{flags}. Return <> on success, <> on error. Possible error returns are: - o <> - + o <> - The section cannot have one or more of the attributes requested. For example, a .bss section in <> may not have the <> field set. @@ -641,10 +732,10 @@ DESCRIPTION /*ARGSUSED*/ boolean -DEFUN(bfd_set_section_flags,(abfd, section, flags), - bfd *abfd AND - sec_ptr section AND - flagword flags) +bfd_set_section_flags (abfd, section, flags) + bfd *abfd; + sec_ptr section; + flagword flags; { #if 0 /* If you try to copy a text section from an input file (where it @@ -652,10 +743,11 @@ DEFUN(bfd_set_section_flags,(abfd, section, flags), the bfd_applicable_section_flags (abfd) doesn't have the SEC_CODE set - which it doesn't, at least not for a.out. FIXME */ - if ((flags & bfd_applicable_section_flags (abfd)) != flags) { - bfd_error = invalid_operation; - return false; - } + if ((flags & bfd_applicable_section_flags (abfd)) != flags) + { + bfd_set_error (bfd_error_invalid_operation); + return false; + } #endif section->flags = flags; @@ -677,7 +769,7 @@ SYNOPSIS DESCRIPTION Call the provided function @var{func} for each section attached to the BFD @var{abfd}, passing @var{obj} as an - argument. The function will be called as if by + argument. The function will be called as if by | func(abfd, the_section, obj); @@ -693,19 +785,19 @@ DESCRIPTION /*VARARGS2*/ void -DEFUN(bfd_map_over_sections,(abfd, operation, user_storage), - bfd *abfd AND - void (*operation) PARAMS ((bfd *abfd, asection *sect, PTR obj)) AND - PTR user_storage) +bfd_map_over_sections (abfd, operation, user_storage) + bfd *abfd; + void (*operation) PARAMS ((bfd * abfd, asection * sect, PTR obj)); + PTR user_storage; { asection *sect; - int i = 0; - + unsigned int i = 0; + for (sect = abfd->sections; sect != NULL; i++, sect = sect->next) (*operation) (abfd, sect, user_storage); - if (i != abfd->section_count) /* Debugging */ - abort(); + if (i != abfd->section_count) /* Debugging */ + abort (); } @@ -718,31 +810,32 @@ SYNOPSIS DESCRIPTION Set @var{sec} to the size @var{val}. If the operation is - ok, then <> is returned, else <>. + ok, then <> is returned, else <>. Possible error returns: - o <> - + o <> - Writing has started to the BFD, so setting the size is invalid. */ boolean -DEFUN(bfd_set_section_size,(abfd, ptr, val), - bfd *abfd AND - sec_ptr ptr AND - bfd_size_type val) +bfd_set_section_size (abfd, ptr, val) + bfd *abfd; + sec_ptr ptr; + 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) { - bfd_error = invalid_operation; - return false; - } + if (abfd->output_has_begun) + { + bfd_set_error (bfd_error_invalid_operation); + return false; + } ptr->_cooked_size = val; ptr->_raw_size = val; - + return true; } @@ -752,7 +845,7 @@ FUNCTION SYNOPSIS boolean bfd_set_section_contents - (bfd *abfd, + (bfd *abfd, asection *section, PTR data, file_ptr offset, @@ -763,13 +856,13 @@ 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{offset} for @var{count} bytes. + @var{offset} for @var{count} bytes. Normally <> is returned, else <>. Possible error returns are: - o <> - + o <> - The output section does not have the <> attribute, so nothing can be written to it. o and some more too @@ -786,57 +879,57 @@ DESCRIPTION : bfd_get_section_size_before_reloc (sec)) boolean -DEFUN(bfd_set_section_contents,(abfd, section, location, offset, count), - bfd *abfd AND - sec_ptr section AND - PTR location AND - file_ptr offset AND - bfd_size_type count) +bfd_set_section_contents (abfd, section, location, offset, count) + bfd *abfd; + sec_ptr section; + PTR location; + file_ptr offset; + bfd_size_type count; { bfd_size_type sz; - if (!bfd_get_section_flags(abfd, section) & SEC_HAS_CONTENTS) - { - bfd_error = no_contents; - return(false); - } + if (!(bfd_get_section_flags (abfd, section) & SEC_HAS_CONTENTS)) + { + bfd_set_error (bfd_error_no_contents); + return (false); + } if (offset < 0) { bad_val: - bfd_error = bad_value; + bfd_set_error (bfd_error_bad_value); return false; } sz = bfd_get_section_size_now (abfd, section); - if (offset > sz + if ((bfd_size_type) offset > sz || count > sz || offset + count > sz) goto bad_val; switch (abfd->direction) { - case read_direction: - case no_direction: - bfd_error = invalid_operation; - return false; + case read_direction: + case no_direction: + bfd_set_error (bfd_error_invalid_operation); + return false; - case write_direction: - break; + case write_direction: + break; - case both_direction: - /* File is opened for update. `output_has_begun' some time ago when + case both_direction: + /* File is opened for update. `output_has_begun' some time ago when the file was created. Do not recompute sections sizes or alignments in _bfd_set_section_content. */ - abfd->output_has_begun = true; - break; + abfd->output_has_begun = true; + break; } if (BFD_SEND (abfd, _bfd_set_section_contents, - (abfd, section, location, offset, count))) - { - abfd->output_has_begun = true; - return true; - } + (abfd, section, location, offset, count))) + { + abfd->output_has_begun = true; + return true; + } return false; } @@ -846,7 +939,7 @@ FUNCTION bfd_get_section_contents SYNOPSIS - boolean bfd_get_section_contents + boolean bfd_get_section_contents (bfd *abfd, asection *section, PTR location, file_ptr offset, bfd_size_type count); @@ -866,31 +959,31 @@ DESCRIPTION */ boolean -DEFUN(bfd_get_section_contents,(abfd, section, location, offset, count), - bfd *abfd AND - sec_ptr section AND - PTR location AND - file_ptr offset AND - bfd_size_type count) +bfd_get_section_contents (abfd, section, location, offset, count) + bfd *abfd; + sec_ptr section; + PTR location; + file_ptr offset; + bfd_size_type count; { bfd_size_type sz; - if (section->flags & SEC_CONSTRUCTOR) + if (section->flags & SEC_CONSTRUCTOR) { - memset(location, 0, (unsigned)count); + memset (location, 0, (unsigned) count); return true; } if (offset < 0) { bad_val: - bfd_error = bad_value; + bfd_set_error (bfd_error_bad_value); return false; } - sz = bfd_get_section_size_now (abfd, section); - if (offset > sz - || count > sz - || offset + count > sz) + /* Even if reloc_done is true, this function reads unrelocated + contents, so we want the raw size. */ + sz = section->_raw_size; + if ((bfd_size_type) offset > sz || count > sz || offset + count > sz) goto bad_val; if (count == 0) @@ -899,10 +992,37 @@ DEFUN(bfd_get_section_contents,(abfd, section, location, offset, count), if ((section->flags & SEC_HAS_CONTENTS) == 0) { - memset(location, 0, (unsigned)count); + memset (location, 0, (unsigned) count); + return true; + } + + if ((section->flags & SEC_IN_MEMORY) != 0) + { + memcpy (location, section->contents + offset, (size_t) count); return true; } return BFD_SEND (abfd, _bfd_get_section_contents, (abfd, section, location, offset, count)); } + +/* +FUNCTION + bfd_copy_private_section_data + +SYNOPSIS + boolean bfd_copy_private_section_data(bfd *ibfd, asection *isec, bfd *obfd, asection *osec); + +DESCRIPTION + Copy private section information from @var{isec} in the BFD + @var{ibfd} to the section @var{osec} in the BFD @var{obfd}. + Return <> on success, <> on error. Possible error + returns are: + + o <> - + 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)) +*/