diff options
Diffstat (limited to 'contrib/binutils/bfd/doc/section.texi')
| -rw-r--r-- | contrib/binutils/bfd/doc/section.texi | 134 |
1 files changed, 83 insertions, 51 deletions
diff --git a/contrib/binutils/bfd/doc/section.texi b/contrib/binutils/bfd/doc/section.texi index 971fd04..b1501f9 100644 --- a/contrib/binutils/bfd/doc/section.texi +++ b/contrib/binutils/bfd/doc/section.texi @@ -124,7 +124,7 @@ struct bfd_comdat_info long symbol; @}; -typedef struct sec +typedef struct bfd_section @{ /* The name of the section; the name isn't a copy, the pointer is the same as that passed to bfd_make_section. */ @@ -137,7 +137,7 @@ typedef struct sec int index; /* The next section in the list belonging to the BFD, or NULL. */ - struct sec *next; + struct bfd_section *next; /* The field flags contains attributes of the section. Some flags are read in from the object file, and some are @@ -335,10 +335,39 @@ typedef struct sec /* A mark flag used by some linker backends for garbage collection. */ unsigned int gc_mark : 1; - /* Used by the ELF code to mark sections which have been allocated - to segments. */ + /* The following flags are used by the ELF linker. */ + + /* Mark sections which have been allocated to segments. */ unsigned int segment_mark : 1; + /* 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 + + /* Nonzero if this section uses RELA relocations, rather than REL. */ + unsigned int use_rela_p:1; + + /* Bits used by various backends. */ + unsigned int has_tls_reloc:1; + + /* Nonzero if this section needs the relax finalize pass. */ + unsigned int need_finalize_relax:1; + + /* Nonzero if this section has a gp reloc. */ + unsigned int has_gp_reloc:1; + + /* Unused bits. */ + unsigned int flag13:1; + unsigned int flag14:1; + unsigned int flag15:1; + unsigned int flag16:4; + unsigned int flag20:4; + unsigned int flag24:8; + /* End of internal packed boolean fields. */ /* The virtual memory address of the section - where it will be @@ -374,7 +403,7 @@ typedef struct sec bfd_vma output_offset; /* The output section through which to map on output. */ - struct sec *output_section; + struct bfd_section *output_section; /* The alignment requirement of the section, as an exponent of 2 - e.g., 3 aligns to 2^3 (or 8). */ @@ -404,7 +433,7 @@ typedef struct sec file_ptr line_filepos; /* Pointer to data for applications. */ - PTR userdata; + void *userdata; /* If the SEC_IN_MEMORY flag is set, this points to the actual contents. */ @@ -422,6 +451,10 @@ typedef struct sec /* Optional information about a COMDAT entry; NULL if not COMDAT. */ struct bfd_comdat_info *comdat; + /* Points to the kept section if this section is a link-once section, + and is discarded. */ + struct bfd_section *kept_section; + /* When a section is being output, this value changes as more linenumbers are written out. */ file_ptr moving_line_filepos; @@ -429,7 +462,7 @@ typedef struct sec /* What the section number is in the target world. */ int target_index; - PTR used_by_bfd; + void *used_by_bfd; /* If this is a constructor section then here is a list of the relocations created to relocate items within it. */ @@ -439,8 +472,8 @@ typedef struct sec bfd *owner; /* A symbol which points at this section only. */ - struct symbol_cache_entry *symbol; - struct symbol_cache_entry **symbol_ptr_ptr; + struct bfd_symbol *symbol; + struct bfd_symbol **symbol_ptr_ptr; struct bfd_link_order *link_order_head; struct bfd_link_order *link_order_tail; @@ -457,18 +490,18 @@ typedef struct sec #define BFD_IND_SECTION_NAME "*IND*" /* The absolute section. */ -extern const asection bfd_abs_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 const asection bfd_und_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 const asection bfd_com_section; +extern asection bfd_com_section; #define bfd_com_section_ptr ((asection *) &bfd_com_section) /* Pointer to the indirect section. */ -extern const asection bfd_ind_section; +extern asection bfd_ind_section; #define bfd_ind_section_ptr ((asection *) &bfd_ind_section) #define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr) @@ -478,13 +511,12 @@ extern const asection bfd_ind_section; || ((SEC) == bfd_com_section_ptr) \ || ((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; +extern const struct bfd_symbol * const bfd_abs_symbol; +extern const struct bfd_symbol * const bfd_com_symbol; +extern const struct bfd_symbol * const bfd_und_symbol; +extern const struct bfd_symbol * const bfd_ind_symbol; #define bfd_get_section_size_before_reloc(section) \ - ((section)->reloc_done ? (abort (), (bfd_size_type) 1) \ - : (section)->_raw_size) + ((section)->_raw_size) #define bfd_get_section_size_after_reloc(section) \ ((section)->reloc_done ? (section)->_cooked_size \ : (abort (), (bfd_size_type) 1)) @@ -534,7 +566,7 @@ hash table entries. @subsubsection @code{bfd_get_section_by_name} @strong{Synopsis} @example -asection *bfd_get_section_by_name(bfd *abfd, const char *name); +asection *bfd_get_section_by_name (bfd *abfd, const char *name); @end example @strong{Description}@* Run through @var{abfd} and return the one of the @@ -550,9 +582,8 @@ or something else) for each section. @subsubsection @code{bfd_get_unique_section_name} @strong{Synopsis} @example -char *bfd_get_unique_section_name(bfd *abfd, - const char *templat, - int *count); +char *bfd_get_unique_section_name + (bfd *abfd, const char *templat, int *count); @end example @strong{Description}@* Invent a section name that is unique in @var{abfd} by tacking @@ -565,7 +596,7 @@ pointed to by @var{count} will be incremented in this case. @subsubsection @code{bfd_make_section_old_way} @strong{Synopsis} @example -asection *bfd_make_section_old_way(bfd *abfd, const char *name); +asection *bfd_make_section_old_way (bfd *abfd, const char *name); @end example @strong{Description}@* Create a new empty section called @var{name} @@ -592,7 +623,7 @@ If memory allocation fails. @subsubsection @code{bfd_make_section_anyway} @strong{Synopsis} @example -asection *bfd_make_section_anyway(bfd *abfd, const char *name); +asection *bfd_make_section_anyway (bfd *abfd, const char *name); @end example @strong{Description}@* Create a new empty section called @var{name} and attach it to the end of @@ -612,7 +643,7 @@ Return @code{NULL} and set @code{bfd_error} on error; possible errors are: @subsubsection @code{bfd_make_section} @strong{Synopsis} @example -asection *bfd_make_section(bfd *, const char *name); +asection *bfd_make_section (bfd *, const char *name); @end example @strong{Description}@* Like @code{bfd_make_section_anyway}, but return @code{NULL} (without calling @@ -624,12 +655,13 @@ section named @var{name}. If there is an error, return @code{NULL} and set @subsubsection @code{bfd_set_section_flags} @strong{Synopsis} @example -boolean bfd_set_section_flags(bfd *abfd, asection *sec, flagword flags); +bfd_boolean bfd_set_section_flags + (bfd *abfd, asection *sec, flagword flags); @end example @strong{Description}@* Set the attributes of the section @var{sec} in the BFD -@var{abfd} to the value @var{flags}. Return @code{true} on success, -@code{false} on error. Possible error returns are: +@var{abfd} to the value @var{flags}. Return @code{TRUE} on success, +@code{FALSE} on error. Possible error returns are: @itemize @bullet @@ -644,11 +676,10 @@ have the @code{SEC_HAS_CONTENTS} field set. @subsubsection @code{bfd_map_over_sections} @strong{Synopsis} @example -void bfd_map_over_sections(bfd *abfd, - void (*func) (bfd *abfd, - asection *sect, - PTR obj), - PTR obj); +void bfd_map_over_sections + (bfd *abfd, + void (*func) (bfd *abfd, asection *sect, void *obj), + void *obj); @end example @strong{Description}@* Call the provided function @var{func} for each section @@ -656,27 +687,28 @@ attached to the BFD @var{abfd}, passing @var{obj} as an argument. The function will be called as if by @example - func(abfd, the_section, obj); + func (abfd, the_section, obj); @end example -This is the prefered method for iterating over sections; an +This is the preferred method for iterating over sections; an alternative would be to use a loop: @example section *p; for (p = abfd->sections; p != NULL; p = p->next) - func(abfd, p, ...) + func (abfd, p, ...) @end example @findex bfd_set_section_size @subsubsection @code{bfd_set_section_size} @strong{Synopsis} @example -boolean bfd_set_section_size(bfd *abfd, asection *sec, bfd_size_type val); +bfd_boolean bfd_set_section_size + (bfd *abfd, asection *sec, bfd_size_type val); @end example @strong{Description}@* Set @var{sec} to the size @var{val}. If the operation is -ok, then @code{true} is returned, else @code{false}. +ok, then @code{TRUE} is returned, else @code{FALSE}. Possible error returns: @itemize @bullet @@ -690,9 +722,9 @@ Writing has started to the BFD, so setting the size is invalid. @subsubsection @code{bfd_set_section_contents} @strong{Synopsis} @example -boolean bfd_set_section_contents (bfd *abfd, asection *section, - PTR data, file_ptr offset, - bfd_size_type count); +bfd_boolean bfd_set_section_contents + (bfd *abfd, asection *section, const void *data, + file_ptr offset, bfd_size_type count); @end example @strong{Description}@* Sets the contents of the section @var{section} in BFD @@ -700,7 +732,7 @@ Sets the contents of the section @var{section} in BFD data is written to the output section starting at offset @var{offset} for @var{count} octets. -Normally @code{true} is returned, else @code{false}. Possible error +Normally @code{TRUE} is returned, else @code{FALSE}. Possible error returns are: @itemize @bullet @@ -718,8 +750,8 @@ This routine is front end to the back end function @subsubsection @code{bfd_get_section_contents} @strong{Synopsis} @example -boolean bfd_get_section_contents (bfd *abfd, asection *section, - PTR location, file_ptr offset, +bfd_boolean bfd_get_section_contents + (bfd *abfd, asection *section, void *location, file_ptr offset, bfd_size_type count); @end example @strong{Description}@* @@ -731,20 +763,20 @@ and is read for @var{count} bytes. If the contents of a constructor with the @code{SEC_CONSTRUCTOR} flag set are requested or if the section does not have the @code{SEC_HAS_CONTENTS} flag set, then the @var{location} is filled -with zeroes. If no errors occur, @code{true} is returned, else -@code{false}. +with zeroes. If no errors occur, @code{TRUE} is returned, else +@code{FALSE}. @findex bfd_copy_private_section_data @subsubsection @code{bfd_copy_private_section_data} @strong{Synopsis} @example -boolean bfd_copy_private_section_data (bfd *ibfd, asection *isec, - bfd *obfd, asection *osec); +bfd_boolean bfd_copy_private_section_data + (bfd *ibfd, asection *isec, bfd *obfd, asection *osec); @end example @strong{Description}@* Copy private section information from @var{isec} in the BFD @var{ibfd} to the section @var{osec} in the BFD @var{obfd}. -Return @code{true} on success, @code{false} on error. Possible error +Return @code{TRUE} on success, @code{FALSE} on error. Possible error returns are: @itemize @bullet @@ -778,7 +810,7 @@ to remove sections. @subsubsection @code{bfd_generic_discard_group} @strong{Synopsis} @example -boolean bfd_generic_discard_group (bfd *abfd, asection *group); +bfd_boolean bfd_generic_discard_group (bfd *abfd, asection *group); @end example @strong{Description}@* Remove all members of @var{group} from the output. |
