/* ELF support for BFD.
- Copyright (C) 1991, 92, 93, 95, 1997 Free Software Foundation, Inc.
+ Copyright (C) 1991-2019 Free Software Foundation, Inc.
Written by Fred Fish @ Cygnus Support, from information published
in "UNIX System V Release 4, Programmers Guide: ANSI C and
Programming Support Tools".
-This file is part of BFD, the Binary File Descriptor library.
+ This file is part of BFD, the Binary File Descriptor library.
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
/* This file is part of ELF support for BFD, and contains the portions
that describe how ELF is represented externally by the BFD library.
I.E. it describes the in-file representation of ELF. It requires
- the elf-common.h file which contains the portions that are common to
- both the internal and external representations. */
-
+ the elf/common.h file which contains the portions that are common to
+ both the internal and external representations. */
+
/* The 64-bit stuff is kind of random. Perhaps someone will publish a
spec someday. */
#ifndef _ELF_EXTERNAL_H
#define _ELF_EXTERNAL_H
+/* Special section indices, which may show up in st_shndx fields, among
+ other places. */
+
+#define SHN_LORESERVE 0xFF00 /* Begin range of reserved indices */
+#define SHN_LOPROC 0xFF00 /* Begin range of appl-specific */
+#define SHN_HIPROC 0xFF1F /* End range of appl-specific */
+#define SHN_LOOS 0xFF20 /* OS specific semantics, lo */
+#define SHN_HIOS 0xFF3F /* OS specific semantics, hi */
+#define SHN_ABS 0xFFF1 /* Associated symbol is absolute */
+#define SHN_COMMON 0xFFF2 /* Associated symbol is in common */
+#define SHN_XINDEX 0xFFFF /* Section index is held elsewhere */
+#define SHN_HIRESERVE 0xFFFF /* End range of reserved indices */
+
/* ELF Header (32-bit implementations) */
typedef struct {
unsigned char sh_entsize[8]; /* Entry size if section holds table */
} Elf64_External_Shdr;
+/* Compression header */
+
+typedef struct {
+ unsigned char ch_type[4]; /* Type of compression */
+ unsigned char ch_size[4]; /* Size of uncompressed data in bytes */
+ unsigned char ch_addralign[4]; /* Alignment of uncompressed data */
+} Elf32_External_Chdr;
+
+typedef struct {
+ unsigned char ch_type[4]; /* Type of compression */
+ unsigned char ch_reserved[4]; /* Padding */
+ unsigned char ch_size[8]; /* Size of uncompressed data in bytes */
+ unsigned char ch_addralign[8]; /* Alignment of uncompressed data */
+} Elf64_External_Chdr;
+
/* Symbol table entry */
typedef struct {
unsigned char st_size[8]; /* Associated symbol size */
} Elf64_External_Sym;
+typedef struct {
+ unsigned char est_shndx[4]; /* Section index */
+} Elf_External_Sym_Shndx;
+
/* Note segments */
typedef struct {
char name[1]; /* Start of the name+desc data */
} Elf_External_Note;
+/* Align an address upward to a boundary, expressed as a number of bytes.
+ E.g. align to an 8-byte boundary with argument of 8. */
+#define ELF_ALIGN_UP(addr, boundary) \
+ (((bfd_vma) (addr) + ((boundary) - 1)) & ~ (bfd_vma) ((boundary) -1))
+
+/* Compute the offset of the note descriptor from size of note entry's
+ owner string and note alignment. */
+#define ELF_NOTE_DESC_OFFSET(namesz, align) \
+ ELF_ALIGN_UP (offsetof (Elf_External_Note, name) + (namesz), (align))
+
+/* Compute the offset of the next note entry from size of note entry's
+ owner string, size of the note descriptor and note alignment. */
+#define ELF_NOTE_NEXT_OFFSET(namesz, descsz, align) \
+ ELF_ALIGN_UP (ELF_NOTE_DESC_OFFSET ((namesz), (align)) + (descsz), \
+ (align))
+
/* Relocation Entries */
typedef struct {
unsigned char r_offset[4]; /* Location at which to apply the action */
} d_un;
} Elf64_External_Dyn;
+/* The version structures are currently size independent. They are
+ named without a 32 or 64. If that ever changes, these structures
+ will need to be renamed. */
+
/* This structure appears in a SHT_GNU_verdef section. */
typedef struct {
unsigned char vd_hash[4];
unsigned char vd_aux[4];
unsigned char vd_next[4];
-} Elf32_External_Verdef;
-
-typedef Elf32_External_Verdef Elf64_External_Verdef;
+} Elf_External_Verdef;
/* This structure appears in a SHT_GNU_verdef section. */
typedef struct {
unsigned char vda_name[4];
unsigned char vda_next[4];
-} Elf32_External_Verdaux;
+} Elf_External_Verdaux;
-typedef Elf32_External_Verdaux Elf64_External_Verdaux;
-
/* This structure appears in a SHT_GNU_verneed section. */
typedef struct {
unsigned char vn_file[4];
unsigned char vn_aux[4];
unsigned char vn_next[4];
-} Elf32_External_Verneed;
-
-typedef Elf32_External_Verneed Elf64_External_Verneed;
+} Elf_External_Verneed;
/* This structure appears in a SHT_GNU_verneed section. */
unsigned char vna_other[2];
unsigned char vna_name[4];
unsigned char vna_next[4];
-} Elf32_External_Vernaux;
-
-typedef Elf32_External_Vernaux Elf64_External_Vernaux;
+} Elf_External_Vernaux;
/* This structure appears in a SHT_GNU_versym section. This is not a
standard ELF structure; ELF just uses Elf32_Half. */
typedef struct {
unsigned char vs_vers[2];
-} Elf32_External_Versym;
+} ATTRIBUTE_PACKED Elf_External_Versym;
+
+/* Structure for syminfo section. */
+typedef struct
+{
+ unsigned char si_boundto[2];
+ unsigned char si_flags[2];
+} Elf_External_Syminfo;
+
+
+/* This structure appears on the stack and in NT_AUXV core file notes. */
+typedef struct
+{
+ unsigned char a_type[4];
+ unsigned char a_val[4];
+} Elf32_External_Auxv;
+
+typedef struct
+{
+ unsigned char a_type[8];
+ unsigned char a_val[8];
+} Elf64_External_Auxv;
+
+/* Size of SHT_GROUP section entry. */
-typedef Elf32_External_Versym Elf64_External_Versym;
+#define GRP_ENTRY_SIZE 4
#endif /* _ELF_EXTERNAL_H */
projects / deliverable / binutils-gdb.git / blobdiff