Add support for SHT_ORDERED and SHF_EXCLUDE
This commit is contained in:
parent
053baeb156
commit
83f4323e5a
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@ -1,3 +1,16 @@
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Thu Jan 11 17:06:14 1996 Michael Meissner <meissner@tiktok.cygnus.com>
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* section.c (SEC_{EXCLUDE,SORT_ENTRIES}): New section flags for
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PowerPC V.4 and eabi.
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* bfd-in2.h: Regenerate.
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* libfd.h: Regenerate.
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* elfxx-target.h (TARGET_{BIG,LITTLE}_SYM): Add new flags.
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* elf32-ppc.c (ppc_elf_section_from_shdr): Support SHT_ORDERED
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section type and SHF_EXCLUDE section flag, turning them into the
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appropriate bfd section flag.
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Thu Jan 11 11:23:30 1996 Ian Lance Taylor <ian@cygnus.com>
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* elf32-mips.c: Extensive changes for a start at dynamic linking
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@ -1,5 +1,5 @@
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/* Main header file for the bfd library -- portable access to object files.
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Copyright 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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Copyright 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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** NOTE: bfd.h and bfd-in2.h are GENERATED files. Don't change them;
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@ -874,6 +874,16 @@ typedef struct sec
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memory if appropriate. */
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#define SEC_IN_MEMORY 0x20000
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/* The contents of this section are to be excluded by the
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linker for executable and shared objects unless those
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objects are to be further relocated. */
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#define SEC_EXCLUDE 0x40000
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/* The contents of this section are to be sorted by the
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based on the address specified in the associated symbol
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table. */
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#define SEC_SORT_ENTRIES 0x80000
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/* End of section flags. */
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/* The virtual memory address of the section - where it will be
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@ -113,6 +113,10 @@ static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
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static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
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static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
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static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
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Elf32_Internal_Shdr *,
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char *));
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static boolean ppc_elf_check_relocs PARAMS ((bfd *,
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struct bfd_link_info *,
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asection *,
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@ -1127,6 +1131,34 @@ ppc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
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return bfd_reloc_notsupported;
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}
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/* Handle a PowerPC specific section when reading an object file. This
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is called when elfcode.h finds a section with an unknown type. */
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static boolean
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ppc_elf_section_from_shdr (abfd, hdr, name)
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bfd *abfd;
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Elf32_Internal_Shdr *hdr;
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char *name;
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{
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asection *newsect;
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flagword flags;
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if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
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return false;
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newsect = hdr->bfd_section;
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flags = bfd_get_section_flags (abfd, newsect);
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if (hdr->sh_flags & SHF_EXCLUDE)
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flags |= SEC_EXCLUDE;
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if (hdr->sh_type == SHT_ORDERED)
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flags |= SEC_SORT_ENTRIES;
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bfd_set_section_flags (abfd, newsect, flags);
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return true;
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}
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/* Adjust a symbol defined by a dynamic object and referenced by a
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regular object. The current definition is in some section of the
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@ -2290,6 +2322,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
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#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
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#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
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#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
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#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
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#define elf_backend_relocate_section ppc_elf_relocate_section
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#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
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#define elf_backend_check_relocs ppc_elf_check_relocs
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@ -303,7 +303,7 @@ const bfd_target TARGET_BIG_SYM =
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/* section_flags: mask of all section flags */
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
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SEC_CODE | SEC_DATA | SEC_DEBUGGING),
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SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
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/* leading_symbol_char: is the first char of a user symbol
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predictable, and if so what is it */
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@ -387,7 +387,7 @@ const bfd_target TARGET_LITTLE_SYM =
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/* section_flags: mask of all section flags */
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(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC | SEC_READONLY |
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SEC_CODE | SEC_DATA | SEC_DEBUGGING),
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SEC_CODE | SEC_DATA | SEC_DEBUGGING | SEC_EXCLUDE | SEC_SORT_ENTRIES),
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/* leading_symbol_char: is the first char of a user symbol
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predictable, and if so what is it */
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@ -1,6 +1,6 @@
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/* libbfd.h -- Declarations used by bfd library *implementation*.
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(This include file is not for users of the library.)
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Copyright 1990, 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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Copyright 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
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Written by Cygnus Support.
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** NOTE: libbfd.h is a GENERATED file. Don't change it; instead,
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130
bfd/section.c
130
bfd/section.c
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@ -1,5 +1,5 @@
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/* 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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Copyright (C) 1990, 1991, 1992, 1993, 1996 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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@ -16,7 +16,7 @@ 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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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*
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SECTION
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.#define SEC_HAS_CONTENTS 0x200
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.
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. {* An instruction to the linker to not output the section
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. even if it has information which would normally be written. *}
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. even if it has information which would normally be written. *}
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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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.#define SEC_SHARED_LIBRARY 0x800
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. {* The section is a COFF shared library section. This flag is
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. only for the linker. If this type of section appears in
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. the input file, the linker must copy it to the output file
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. without changing the vma or size. FIXME: Although this
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. was originally intended to be general, it really is COFF
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. specific (and the flag was renamed to indicate this). It
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. might be cleaner to have some more general mechanism to
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. allow the back end to control what the linker does with
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. sections. *}
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.#define SEC_COFF_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 (which we
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. translate to bfd_com_section), but ECOFF has two. *}
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. translate to bfd_com_section_ptr), but ECOFF has two. *}
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.#define SEC_IS_COMMON 0x8000
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.
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. {* The section contains only debugging information. For
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@ -253,6 +259,16 @@ CODE_FRAGMENT
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. memory if appropriate. *}
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.#define SEC_IN_MEMORY 0x20000
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.
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. {* The contents of this section are to be excluded by the
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. linker for executable and shared objects unless those
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. objects are to be further relocated. *}
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.#define SEC_EXCLUDE 0x40000
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.
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. {* The contents of this section are to be sorted by the
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. based on the address specified in the associated symbol
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. table. *}
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.#define SEC_SORT_ENTRIES 0x80000
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.
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. {* End of section flags. *}
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.
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. {* The virtual memory address of the section - where it will be
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@ -373,28 +389,36 @@ CODE_FRAGMENT
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. struct bfd_link_order *link_order_tail;
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.} asection ;
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.
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.
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. {* These sections are global, and are managed by BFD. The application
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. and target back end are not permitted to change the values in
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. these sections. *}
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. these sections. New code should use the section_ptr macros rather
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. than referring directly to the const sections. The const sections
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. may eventually vanish. *}
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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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.extern const asection bfd_abs_section;
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.#define bfd_abs_section_ptr ((asection *) &bfd_abs_section)
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.#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)
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. {* Pointer to the undefined section *}
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.extern asection bfd_und_section;
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.extern const asection bfd_und_section;
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.#define bfd_und_section_ptr ((asection *) &bfd_und_section)
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.#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
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. {* Pointer to the common section *}
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.extern asection bfd_com_section;
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.extern const asection bfd_com_section;
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.#define bfd_com_section_ptr ((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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.extern const asection bfd_ind_section;
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.#define bfd_ind_section_ptr ((asection *) &bfd_ind_section)
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.#define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr)
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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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.extern const struct symbol_cache_entry * const bfd_abs_symbol;
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.extern const struct symbol_cache_entry * const bfd_com_symbol;
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.extern const struct symbol_cache_entry * const bfd_und_symbol;
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.extern const struct symbol_cache_entry * const 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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/* 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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static const asymbol global_syms[] =
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{
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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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{0, BFD_COM_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_com_section},
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{0, BFD_UND_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_und_section},
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{0, BFD_ABS_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_abs_section},
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{0, BFD_IND_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &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, 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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const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \
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const asection SEC = \
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{ NAME, 0, 0, FLAGS, 0, false, 0, 0, 0, 0, (asection *) &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], (asymbol **) &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_com_section, SEC_IS_COMMON, bfd_com_symbol,
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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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@ -545,10 +571,7 @@ bfd_make_section_anyway (abfd, name)
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newsect = (asection *) bfd_zalloc (abfd, sizeof (asection));
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if (newsect == NULL)
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{
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bfd_set_error (bfd_error_no_memory);
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return NULL;
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}
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return NULL;
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newsect->name = name;
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newsect->index = abfd->section_count++;
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@ -566,7 +589,7 @@ bfd_make_section_anyway (abfd, name)
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useful for things like relocs which are relative to the base of a
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section. */
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newsect->symbol = bfd_make_empty_symbol (abfd);
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if (!newsect)
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if (newsect->symbol == NULL)
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return NULL;
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newsect->symbol->name = name;
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newsect->symbol->value = 0;
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@ -599,7 +622,7 @@ DESCRIPTION
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<<bfd_error>>.
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*/
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sec_ptr
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asection *
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bfd_make_section (abfd, name)
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bfd *abfd;
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CONST char *name;
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@ -608,20 +631,20 @@ bfd_make_section (abfd, name)
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if (strcmp (name, BFD_ABS_SECTION_NAME) == 0)
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{
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return &bfd_abs_section;
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return bfd_abs_section_ptr;
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}
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if (strcmp (name, BFD_COM_SECTION_NAME) == 0)
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{
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return &bfd_com_section;
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return bfd_com_section_ptr;
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}
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if (strcmp (name, BFD_UND_SECTION_NAME) == 0)
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{
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return &bfd_und_section;
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return bfd_und_section_ptr;
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}
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if (strcmp (name, BFD_IND_SECTION_NAME) == 0)
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{
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return &bfd_ind_section;
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return bfd_ind_section_ptr;
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}
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while (sect)
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@ -716,7 +739,7 @@ bfd_map_over_sections (abfd, operation, user_storage)
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PTR user_storage;
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{
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asection *sect;
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int i = 0;
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unsigned int i = 0;
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for (sect = abfd->sections; sect != NULL; i++, sect = sect->next)
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(*operation) (abfd, sect, user_storage);
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@ -813,7 +836,7 @@ bfd_set_section_contents (abfd, section, location, offset, count)
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{
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bfd_size_type sz;
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if (!bfd_get_section_flags (abfd, section) & SEC_HAS_CONTENTS)
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if (!(bfd_get_section_flags (abfd, section) & SEC_HAS_CONTENTS))
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{
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bfd_set_error (bfd_error_no_contents);
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return (false);
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@ -826,7 +849,7 @@ bfd_set_section_contents (abfd, section, location, offset, count)
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return false;
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}
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sz = bfd_get_section_size_now (abfd, section);
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if (offset > sz
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if ((bfd_size_type) offset > sz
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|| count > sz
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|| offset + count > sz)
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goto bad_val;
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@ -908,7 +931,7 @@ bfd_get_section_contents (abfd, section, location, offset, count)
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/* Even if reloc_done is true, this function reads unrelocated
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contents, so we want the raw size. */
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sz = section->_raw_size;
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if (offset > sz || count > sz || offset + count > sz)
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if ((bfd_size_type) offset > sz || count > sz || offset + count > sz)
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goto bad_val;
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if (count == 0)
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@ -923,10 +946,31 @@ bfd_get_section_contents (abfd, section, location, offset, count)
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if ((section->flags & SEC_IN_MEMORY) != 0)
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{
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memcpy (location, section->contents + offset, count);
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memcpy (location, section->contents + offset, (size_t) count);
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return true;
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}
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return BFD_SEND (abfd, _bfd_get_section_contents,
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(abfd, section, location, offset, count));
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}
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/*
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FUNCTION
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bfd_copy_private_section_data
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SYNOPSIS
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boolean bfd_copy_private_section_data(bfd *ibfd, asection *isec, bfd *obfd, asection *osec);
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DESCRIPTION
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Copy private section information from @var{isec} in the BFD
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@var{ibfd} to the section @var{osec} in the BFD @var{obfd}.
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Return <<true>> on success, <<false>> on error. Possible error
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returns are:
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|
||||
o <<bfd_error_no_memory>> -
|
||||
Not enough memory exists to create private data for @var{osec}.
|
||||
|
||||
.#define bfd_copy_private_section_data(ibfd, isection, obfd, osection) \
|
||||
. BFD_SEND (ibfd, _bfd_copy_private_section_data, \
|
||||
. (ibfd, isection, obfd, osection))
|
||||
*/
|
||||
|
|
|
@ -1,3 +1,8 @@
|
|||
Thu Jan 11 17:31:38 1996 Michael Meissner <meissner@tiktok.cygnus.com>
|
||||
|
||||
* objdump.c (dump_section_header): Add new section flags
|
||||
SEC_{EXCLUDE,SORT_ENTRIES}.
|
||||
|
||||
Thu Jan 11 11:45:34 1996 Ian Lance Taylor <ian@cygnus.com>
|
||||
|
||||
* objcopy.c (filter_symbols): NULL terminate the output symbols.
|
||||
|
|
|
@ -220,6 +220,8 @@ dump_section_header (abfd, section, ignored)
|
|||
PF (SEC_ROM, "ROM");
|
||||
PF (SEC_DEBUGGING, "DEBUGGING");
|
||||
PF (SEC_NEVER_LOAD, "NEVER_LOAD");
|
||||
PF (SEC_EXCLUDE, "EXCLUDE");
|
||||
PF (SEC_SORT_ENTRIES, "SORT ENTRIES");
|
||||
printf ("\n");
|
||||
#undef PF
|
||||
}
|
||||
|
@ -1294,7 +1296,7 @@ display_bfd (abfd)
|
|||
putchar ('\n');
|
||||
if (dump_section_headers)
|
||||
dump_headers (abfd);
|
||||
if (dump_symtab || dump_reloc_info || disassemble)
|
||||
if (dump_symtab || dump_reloc_info || disassemble || dump_debugging)
|
||||
{
|
||||
syms = slurp_symtab (abfd);
|
||||
}
|
||||
|
@ -1320,7 +1322,7 @@ display_bfd (abfd)
|
|||
{
|
||||
PTR dhandle;
|
||||
|
||||
dhandle = read_debugging_info (abfd);
|
||||
dhandle = read_debugging_info (abfd, syms, symcount);
|
||||
if (dhandle != NULL)
|
||||
{
|
||||
if (! print_debugging_info (stdout, dhandle))
|
||||
|
|
Loading…
Reference in New Issue