21c7770362
symbols in a better way. (translate_to_native_sym_flag): Set the N_INDR bit when necessary. (aout<>slurp_symbol_table): Maintain indirect state. * section.c: Added BFD_IND_SECTION_NAME and bfd_ind_section. (bfd_make_section): Cope with new builtin section. * syms.c (bfd_decode_symclass): Can now print indirect section info.
840 lines
23 KiB
C
840 lines
23 KiB
C
/* Object file "section" support for the BFD library.
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Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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Written by Cygnus Support.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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SECTION
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Sections
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Sections are supported in BFD in <<section.c>>.
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The raw data contained within a BFD is maintained through the
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section abstraction. A single BFD may have any number of
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sections, and keeps hold of them by pointing to the first,
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each one points to the next in the list.
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@menu
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@* Section Input::
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@* Section Output::
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@* typedef asection::
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@* section prototypes::
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@end menu
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INODE
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Section Input, Section Output, Sections, Sections
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SUBSECTION
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Section Input
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When a BFD is opened for reading, the section structures are
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created and attached to the BFD.
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Each section has a name which describes the section in the
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outside world - for example, <<a.out>> would contain at least
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three sections, called <<.text>>, <<.data>> and <<.bss>>.
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Sometimes a BFD will contain more than the 'natural' number of
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sections. A back end may attach other sections containing
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constructor data, or an application may add a section (using
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bfd_make_section) to the sections attached to an already open
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BFD. For example, the linker creates a supernumary section
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<<COMMON>> for each input file's BFD to hold information about
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common storage.
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The raw data is not necessarily read in at the same time as
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the section descriptor is created. Some targets may leave the
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data in place until a <<bfd_get_section_contents>> call is
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made. Other back ends may read in all the data at once - For
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example; an S-record file has to be read once to determine the
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size of the data. An IEEE-695 file doesn't contain raw data in
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sections, but data and relocation expressions intermixed, so
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the data area has to be parsed to get out the data and
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relocations.
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INODE
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Section Output, typedef asection, Section Input, Sections
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SUBSECTION
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Section Output
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To write a new object style BFD, the various sections to be
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written have to be created. They are attached to the BFD in
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the same way as input sections, data is written to the
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sections using <<bfd_set_section_contents>>.
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Any program that creates or combines sections (e.g., the assembler
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and linker) must use the fields <<output_section>> and
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<<output_offset>> to indicate the file sections to which each
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section must be written. (If the section is being created from
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scratch, <<output_section>> should probably point to the section
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itself, and <<output_offset>> should probably be zero.)
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The data to be written comes from input sections attached to
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the output sections. The output section structure can be
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considered a filter for the input section, the output section
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determines the vma of the output data and the name, but the
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input section determines the offset into the output section of
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the data to be written.
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E.g., to create a section "O", starting at 0x100, 0x123 long,
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containing two subsections, "A" at offset 0x0 (ie at vma
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0x100) and "B" at offset 0x20 (ie at vma 0x120) the structures
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would look like:
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| section name "A"
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| output_offset 0x00
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| size 0x20
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| output_section -----------> section name "O"
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| | vma 0x100
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| section name "B" | size 0x123
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| output_offset 0x20 |
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| size 0x103 |
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| output_section --------|
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SUBSECTION
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Seglets
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The data within a section is stored in a <<seglet>>. These
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are much like the fixups in <<gas>>. The seglet abstraction
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allows the a section to grow and shrink within itself.
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A seglet knows how big it is, and which is the next seglet and
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where the raw data for it is, and also points to a list of
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relocations which apply to it.
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The seglet is used by the linker to perform relaxing on final
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code. The application creates code which is as big as
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necessary to make it work without relaxing, and the user can
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select whether to relax. Sometimes relaxing takes a lot of
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time. The linker runs around the relocations to see if any
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are attached to data which can be shrunk, if so it does it on
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a seglet by seglet basis.
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*/
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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/*
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DOCDD
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INODE
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typedef asection, section prototypes, Section Output, Sections
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SUBSECTION
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typedef asection
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The shape of a section struct:
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CODE_FRAGMENT
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.
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.typedef struct sec
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.{
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. {* The name of the section, the name isn't a copy, the pointer is
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. the same as that passed to bfd_make_section. *}
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.
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. CONST char *name;
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.
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.
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. {* Which section is it 0.nth *}
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.
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. int index;
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.
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. {* The next section in the list belonging to the BFD, or NULL. *}
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.
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. struct sec *next;
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.
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. {* The field flags contains attributes of the section. Some of
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. flags are read in from the object file, and some are
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. synthesized from other information. *}
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.
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. flagword flags;
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.
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.#define SEC_NO_FLAGS 0x000
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.
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. {* Tells the OS to allocate space for this section when loaded.
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. This would clear for a section containing debug information
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. only. *}
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.
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.
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.#define SEC_ALLOC 0x001
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. {* Tells the OS to load the section from the file when loading.
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. This would be clear for a .bss section *}
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.
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.#define SEC_LOAD 0x002
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. {* The section contains data still to be relocated, so there will
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. be some relocation information too. *}
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.
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.#define SEC_RELOC 0x004
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.
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. {* Obsolete ? *}
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.
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.#define SEC_BALIGN 0x008
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.
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. {* A signal to the OS that the section contains read only
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. data. *}
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.#define SEC_READONLY 0x010
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.
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. {* The section contains code only. *}
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.
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.#define SEC_CODE 0x020
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.
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. {* The section contains data only. *}
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.
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.#define SEC_DATA 0x040
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.
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. {* The section will reside in ROM. *}
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.
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.#define SEC_ROM 0x080
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.
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. {* The section contains constructor information. This section
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. type is used by the linker to create lists of constructors and
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. destructors used by <<g++>>. When a back end sees a symbol
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. which should be used in a constructor list, it creates a new
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. section for the type of name (eg <<__CTOR_LIST__>>), attaches
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. the symbol to it and builds a relocation. To build the lists
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. of constructors, all the linker has to to is catenate all the
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. sections called <<__CTOR_LIST__>> and relocte the data
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. contained within - exactly the operations it would peform on
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. standard data. *}
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.
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.#define SEC_CONSTRUCTOR 0x100
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.
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. {* The section is a constuctor, and should be placed at the
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. end of the . *}
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.
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.#define SEC_CONSTRUCTOR_TEXT 0x1100
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.
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.#define SEC_CONSTRUCTOR_DATA 0x2100
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.
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.#define SEC_CONSTRUCTOR_BSS 0x3100
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.
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. {* The section has contents - a data section could be
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. <<SEC_ALLOC>> | <<SEC_HAS_CONTENTS>>, a debug section could be
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. <<SEC_HAS_CONTENTS>> *}
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.
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.#define SEC_HAS_CONTENTS 0x200
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.
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. {* An instruction to the linker not to output sections
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. containing this flag even if they have information which
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. would normally be written. *}
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.
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.#define SEC_NEVER_LOAD 0x400
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.
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. {* The section is a shared library section. The linker must leave
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. these completely alone, as the vma and size are used when
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. the executable is loaded. *}
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.
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.#define SEC_SHARED_LIBRARY 0x800
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.
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. {* The section is a common section (symbols may be defined
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. multiple times, the value of a symbol is the amount of
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. space it requires, and the largest symbol value is the one
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. used). Most targets have exactly one of these (.bss), but
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. ECOFF has two. *}
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.
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.#define SEC_IS_COMMON 0x8000
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.
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. bfd_vma vma;
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. boolean user_set_vma;
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.
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. {* The size of the section in bytes, as it will be output.
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. contains a value even if the section has no contents (eg, the
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. size of <<.bss>>). This will be filled in after relocation *}
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.
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. bfd_size_type _cooked_size;
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.
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. {* The size on disk of the section in bytes originally. Normally this
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. value is the same as the size, but if some relaxing has
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. been done, then this value will be bigger. *}
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.
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. bfd_size_type _raw_size;
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.
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. {* If this section is going to be output, then this value is the
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. offset into the output section of the first byte in the input
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. section. Eg, if this was going to start at the 100th byte in
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. the output section, this value would be 100. *}
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.
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. bfd_vma output_offset;
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.
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. {* The output section through which to map on output. *}
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.
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. struct sec *output_section;
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.
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. {* The alignment requirement of the section, as an exponent - eg
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. 3 aligns to 2^3 (or 8) *}
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.
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. unsigned int alignment_power;
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.
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. {* If an input section, a pointer to a vector of relocation
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. records for the data in this section. *}
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.
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. struct reloc_cache_entry *relocation;
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.
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. {* If an output section, a pointer to a vector of pointers to
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. relocation records for the data in this section. *}
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.
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. struct reloc_cache_entry **orelocation;
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.
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. {* The number of relocation records in one of the above *}
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.
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. unsigned reloc_count;
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.
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. {* Information below is back end specific - and not always used
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. or updated
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.
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. File position of section data *}
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.
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. file_ptr filepos;
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.
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. {* File position of relocation info *}
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.
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. file_ptr rel_filepos;
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.
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. {* File position of line data *}
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.
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. file_ptr line_filepos;
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.
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. {* Pointer to data for applications *}
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.
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. PTR userdata;
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.
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. struct lang_output_section *otheruserdata;
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.
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. {* Attached line number information *}
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.
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. alent *lineno;
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.
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. {* Number of line number records *}
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.
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. unsigned int lineno_count;
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.
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. {* When a section is being output, this value changes as more
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. linenumbers are written out *}
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.
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. file_ptr moving_line_filepos;
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.
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. {* what the section number is in the target world *}
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.
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. int target_index;
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.
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. PTR used_by_bfd;
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.
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. {* If this is a constructor section then here is a list of the
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. relocations created to relocate items within it. *}
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.
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. struct relent_chain *constructor_chain;
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.
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. {* The BFD which owns the section. *}
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.
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. bfd *owner;
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.
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. boolean reloc_done;
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. {* A symbol which points at this section only *}
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. struct symbol_cache_entry *symbol;
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. struct symbol_cache_entry **symbol_ptr_ptr;
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. struct bfd_seclet *seclets_head;
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. struct bfd_seclet *seclets_tail;
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.} asection ;
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.
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.
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.#define BFD_ABS_SECTION_NAME "*ABS*"
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.#define BFD_UND_SECTION_NAME "*UND*"
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.#define BFD_COM_SECTION_NAME "*COM*"
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.#define BFD_IND_SECTION_NAME "*IND*"
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.
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. {* the absolute section *}
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. extern asection bfd_abs_section;
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. {* Pointer to the undefined section *}
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. extern asection bfd_und_section;
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. {* Pointer to the common section *}
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. extern asection bfd_com_section;
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. {* Pointer to the indirect section *}
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. extern asection bfd_ind_section;
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.
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. extern struct symbol_cache_entry *bfd_abs_symbol;
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. extern struct symbol_cache_entry *bfd_com_symbol;
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. extern struct symbol_cache_entry *bfd_und_symbol;
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. extern struct symbol_cache_entry *bfd_ind_symbol;
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.#define bfd_get_section_size_before_reloc(section) \
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. (section->reloc_done ? (abort(),1): (section)->_raw_size)
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.#define bfd_get_section_size_after_reloc(section) \
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. ((section->reloc_done) ? (section)->_cooked_size: (abort(),1))
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*/
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/* These symbols are global, not specific to any BFD. Therefore, anything
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that tries to change them is broken, and should be repaired. */
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static CONST asymbol global_syms[] = {
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/* the_bfd, name, value, attr, section [, udata] */
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{ 0, BFD_COM_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_com_section },
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{ 0, BFD_UND_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_und_section },
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{ 0, BFD_ABS_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_abs_section },
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{ 0, BFD_IND_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_ind_section },
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};
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#define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
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asymbol *SYM = (asymbol *) &global_syms[IDX]; \
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asection SEC = { NAME, 0, 0, FLAGS, 0, (boolean) 0, 0, 0, 0, &SEC,\
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (boolean) 0, \
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(asymbol *) &global_syms[IDX], &SYM, }
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STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol, BFD_COM_SECTION_NAME, 0);
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STD_SECTION (bfd_und_section, 0, bfd_und_symbol, BFD_UND_SECTION_NAME, 1);
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STD_SECTION (bfd_abs_section, 0, bfd_abs_symbol, BFD_ABS_SECTION_NAME, 2);
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STD_SECTION (bfd_ind_section, 0, bfd_ind_symbol, BFD_IND_SECTION_NAME, 3);
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#undef STD_SECTION
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/*
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DOCDD
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INODE
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section prototypes, , typedef asection, Sections
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SUBSECTION
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section prototypes
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These are the functions exported by the section handling part of
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<<libbfd>.
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*/
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/*
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FUNCTION
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bfd_get_section_by_name
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SYNOPSIS
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asection *bfd_get_section_by_name(bfd *abfd, CONST char *name);
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DESCRIPTION
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Runs through the provided @var{abfd} and returns the
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<<asection>> who's name matches that provided, otherwise NULL.
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@xref{Sections}, for more information.
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*/
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asection *
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DEFUN(bfd_get_section_by_name,(abfd, name),
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bfd *abfd AND
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CONST char *name)
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{
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asection *sect;
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for (sect = abfd->sections; sect != NULL; sect = sect->next)
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if (!strcmp (sect->name, name)) return sect;
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return NULL;
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}
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/*
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FUNCTION
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bfd_make_section_old_way
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SYNOPSIS
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asection *bfd_make_section_old_way(bfd *, CONST char *name);
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DESCRIPTION
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This function creates a new empty section called @var{name}
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and attaches it to the end of the chain of sections for the
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BFD supplied. An attempt to create a section with a name which
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is already in use, returns its pointer without changing the
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section chain.
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It has the funny name since this is the way it used to be
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before is was rewritten...
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Possible errors are:
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o invalid_operation -
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If output has already started for this BFD.
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o no_memory -
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If obstack alloc fails.
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*/
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asection *
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DEFUN(bfd_make_section_old_way,(abfd, name),
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bfd *abfd AND
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CONST char * name)
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{
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asection *sec = bfd_get_section_by_name(abfd, name);
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if (sec == (asection *)NULL)
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{
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sec = bfd_make_section(abfd, name);
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}
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return sec;
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}
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/*
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FUNCTION
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bfd_make_section
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SYNOPSIS
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asection * bfd_make_section(bfd *, CONST char *name);
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DESCRIPTION
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This function creates a new empty section called @var{name}
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and attaches it to the end of the chain of sections for the
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BFD supplied. An attempt to create a section with a name which
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is already in use, returns NULL without changing the section
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chain.
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Possible errors are:
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o invalid_operation - If output has already started for this BFD.
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o no_memory - If obstack alloc fails.
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*/
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sec_ptr
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DEFUN(bfd_make_section,(abfd, name),
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bfd *abfd AND
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CONST char * name)
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{
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asection *newsect;
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asection ** prev = &abfd->sections;
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|
asection * sect = abfd->sections;
|
|
|
|
if (abfd->output_has_begun) {
|
|
bfd_error = invalid_operation;
|
|
return NULL;
|
|
}
|
|
|
|
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;
|
|
prev = §->next;
|
|
sect = sect->next;
|
|
}
|
|
|
|
newsect = (asection *) bfd_zalloc(abfd, sizeof (asection));
|
|
if (newsect == NULL) {
|
|
bfd_error = no_memory;
|
|
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->reloc_count = 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);
|
|
newsect->symbol->name = name;
|
|
newsect->symbol->value = 0;
|
|
newsect->symbol->section = newsect;
|
|
newsect->symbol->flags = BSF_SECTION_SYM;
|
|
|
|
|
|
newsect->symbol_ptr_ptr = &newsect->symbol;
|
|
|
|
if (BFD_SEND (abfd, _new_section_hook, (abfd, newsect)) != true) {
|
|
free (newsect);
|
|
return NULL;
|
|
}
|
|
|
|
*prev = newsect;
|
|
return newsect;
|
|
}
|
|
|
|
|
|
/*
|
|
FUNCTION
|
|
bfd_set_section_flags
|
|
|
|
SYNOPSIS
|
|
boolean bfd_set_section_flags(bfd *, asection *, flagword);
|
|
|
|
DESCRIPTION
|
|
Attempts to set the attributes of the section named in the BFD
|
|
supplied to the value. Returns true on success, false on
|
|
error. Possible error returns are:
|
|
|
|
o invalid operation -
|
|
The section cannot have one or more of the attributes
|
|
requested. For example, a .bss section in <<a.out>> may not
|
|
have the <<SEC_HAS_CONTENTS>> field set.
|
|
|
|
*/
|
|
|
|
boolean
|
|
DEFUN(bfd_set_section_flags,(abfd, section, flags),
|
|
bfd *abfd AND
|
|
sec_ptr section AND
|
|
flagword flags)
|
|
{
|
|
#if 0
|
|
/* If you try to copy a text section from an input file (where it
|
|
has the SEC_CODE flag set) to an output file, this loses big if
|
|
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;
|
|
}
|
|
#endif
|
|
|
|
section->flags = flags;
|
|
return true;
|
|
}
|
|
|
|
|
|
/*
|
|
FUNCTION
|
|
bfd_map_over_sections
|
|
|
|
SYNOPSIS
|
|
void bfd_map_over_sections(bfd *abfd,
|
|
void (*func)(bfd *abfd,
|
|
asection *sect,
|
|
PTR obj),
|
|
PTR obj);
|
|
|
|
DESCRIPTION
|
|
Calls 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
|
|
|
|
| func(abfd, the_section, obj);
|
|
|
|
This is the prefered method for iterating over sections, an
|
|
alternative would be to use a loop:
|
|
|
|
| section *p;
|
|
| for (p = abfd->sections; p != NULL; p = p->next)
|
|
| func(abfd, p, ...)
|
|
|
|
|
|
*/
|
|
|
|
/*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)
|
|
{
|
|
asection *sect;
|
|
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();
|
|
}
|
|
|
|
|
|
/*
|
|
FUNCTION
|
|
bfd_set_section_size
|
|
|
|
SYNOPSIS
|
|
boolean bfd_set_section_size(bfd *, asection *, bfd_size_type val);
|
|
|
|
DESCRIPTION
|
|
Sets @var{section} to the size @var{val}. If the operation is
|
|
ok, then <<true>> is returned, else <<false>>.
|
|
|
|
Possible error returns:
|
|
o invalid_operation -
|
|
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)
|
|
{
|
|
/* 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;
|
|
}
|
|
|
|
ptr->_cooked_size = val;
|
|
ptr->_raw_size = val;
|
|
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
FUNCTION
|
|
bfd_set_section_contents
|
|
|
|
SYNOPSIS
|
|
boolean bfd_set_section_contents
|
|
(bfd *abfd,
|
|
asection *section,
|
|
PTR data,
|
|
file_ptr offset,
|
|
bfd_size_type count);
|
|
|
|
|
|
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.
|
|
|
|
|
|
|
|
Normally <<true>> is returned, else <<false>>. Possible error
|
|
returns are:
|
|
o 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
|
|
|
|
This routine is front end to the back end function
|
|
<<_bfd_set_section_contents>>.
|
|
|
|
|
|
*/
|
|
|
|
#define bfd_get_section_size_now(abfd,sec) \
|
|
(sec->reloc_done \
|
|
? bfd_get_section_size_after_reloc (sec) \
|
|
: 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_size_type sz;
|
|
|
|
if (!bfd_get_section_flags(abfd, section) & SEC_HAS_CONTENTS)
|
|
{
|
|
bfd_error = no_contents;
|
|
return(false);
|
|
}
|
|
|
|
if (offset < 0 || count < 0)
|
|
{
|
|
bad_val:
|
|
bfd_error = bad_value;
|
|
return false;
|
|
}
|
|
sz = bfd_get_section_size_now (abfd, section);
|
|
if (offset > sz
|
|
|| count > sz
|
|
|| offset + count > sz)
|
|
goto bad_val;
|
|
|
|
if (BFD_SEND (abfd, _bfd_set_section_contents,
|
|
(abfd, section, location, offset, count)))
|
|
{
|
|
abfd->output_has_begun = true;
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
FUNCTION
|
|
bfd_get_section_contents
|
|
|
|
SYNOPSIS
|
|
boolean bfd_get_section_contents
|
|
(bfd *abfd, asection *section, PTR location,
|
|
file_ptr offset, bfd_size_type count);
|
|
|
|
DESCRIPTION
|
|
This function reads data from @var{section} in BFD @var{abfd}
|
|
into memory starting at @var{location}. The data is read at an
|
|
offset of @var{offset} from the start of the input section,
|
|
and is read for @var{count} bytes.
|
|
|
|
If the contents of a constuctor with the <<SEC_CONSTUCTOR>>
|
|
flag set are requested, then the @var{location} is filled with
|
|
zeroes. If no errors occur, <<true>> is returned, else
|
|
<<false>>.
|
|
|
|
|
|
|
|
*/
|
|
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_size_type sz;
|
|
|
|
if (section->flags & SEC_CONSTRUCTOR)
|
|
{
|
|
memset(location, 0, (unsigned)count);
|
|
return true;
|
|
}
|
|
|
|
if (offset < 0 || count < 0)
|
|
{
|
|
bad_val:
|
|
bfd_error = bad_value;
|
|
return false;
|
|
}
|
|
sz = bfd_get_section_size_now (abfd, section);
|
|
if (offset > sz
|
|
|| count > sz
|
|
|| offset + count > sz)
|
|
goto bad_val;
|
|
|
|
if (count == 0)
|
|
/* Don't bother. */
|
|
return true;
|
|
|
|
return BFD_SEND (abfd, _bfd_get_section_contents,
|
|
(abfd, section, location, offset, count));
|
|
}
|