elf.h

Revision 12429, 32.5 kB (checked in by BrainSlayer, 5 months ago)
compressed ELF support is required for ubnt images

Line
1	#ifndef CYGONCE_REDBOOT_ELF_H
2	#define CYGONCE_REDBOOT_ELF_H
3
4	//==========================================================================
5	//
6	// elf.h
7	//
8	// ELF file format definitions
9	//
10	//==========================================================================
11	//####ECOSGPLCOPYRIGHTBEGIN####
12	// -------------------------------------------
13	// This file is part of eCos, the Embedded Configurable Operating System.
14	// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
15	//
16	// eCos is free software; you can redistribute it and/or modify it under
17	// the terms of the GNU General Public License as published by the Free
18	// Software Foundation; either version 2 or (at your option) any later version.
19	//
20	// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
21	// WARRANTY; without even the implied warranty of MERCHANTABILITY or
22	// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
23	// for more details.
24	//
25	// You should have received a copy of the GNU General Public License along
26	// with eCos; if not, write to the Free Software Foundation, Inc.,
27	// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
28	//
29	// As a special exception, if other files instantiate templates or use macros
30	// or inline functions from this file, or you compile this file and link it
31	// with other works to produce a work based on this file, this file does not
32	// by itself cause the resulting work to be covered by the GNU General Public
33	// License. However the source code for this file must still be made available
34	// in accordance with section (3) of the GNU General Public License.
35	//
36	// This exception does not invalidate any other reasons why a work based on
37	// this file might be covered by the GNU General Public License.
38	//
39	// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
40	// at http://sources.redhat.com/ecos/ecos-license/
41	// -------------------------------------------
42	//####ECOSGPLCOPYRIGHTEND####
43	//==========================================================================
44	//#####DESCRIPTIONBEGIN####
45	//
46	// Author(s): nickg
47	// Contributors: nickg
48	// Date: 2000-11-15
49	// Purpose: Define ELF file format
50	// Description: The types defined here describe the ELF file format.
51	//
52	// Usage: #include <cyg/loader/elf.h>
53	//
54	//####DESCRIPTIONEND####
55	//
56	//==========================================================================
57	//
58	// Quite a lot of this file was taken from the BSD exec_elf.h header file.
59	// Hence we should show you this...
60	//
61	/* $OpenBSD: exec_elf.h,v 1.20 1999/09/19 16:16:49 kstailey Exp $ */
62	/*
63	* Copyright (c) 1995, 1996 Erik Theisen. All rights reserved.
64	*
65	* Redistribution and use in source and binary forms, with or without
66	* modification, are permitted provided that the following conditions
67	* are met:
68	* 1. Redistributions of source code must retain the above copyright
69	* notice, this list of conditions and the following disclaimer.
70	* 2. Redistributions in binary form must reproduce the above copyright
71	* notice, this list of conditions and the following disclaimer in the
72	* documentation and/or other materials provided with the distribution.
73	* 3. The name of the author may not be used to endorse or promote products
74	* derived from this software without specific prior written permission
75	*
76	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
77	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
78	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
79	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
80	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
81	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
82	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
83	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
84	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
85	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
86	*/
87	//==========================================================================
88
89
90	// -------------------------------------------------------------------------
91	// Basic types:
92
93	typedef unsigned int cyg_uint32;
94	typedef unsigned long long cyg_uint64;
95	typedef long long cyg_int64;
96	typedef unsigned short cyg_uint16;
97	typedef short cyg_int16;
98	typedef int cyg_int32;
99
100	typedef cyg_uint32 Elf32_Addr;
101	typedef cyg_uint32 Elf32_Off;
102	typedef cyg_uint16 Elf32_Half;
103	typedef cyg_uint32 Elf32_Word;
104	typedef cyg_int32 Elf32_Sword;
105
106	typedef cyg_uint64 Elf64_Addr;
107	typedef cyg_uint64 Elf64_Off;
108	typedef cyg_uint16 Elf64_Half;
109	typedef cyg_uint32 Elf64_Word;
110	typedef cyg_int32 Elf64_Sword;
111	typedef cyg_uint64 Elf64_Xword;
112	typedef cyg_int64 Elf64_Sxword;
113
114	// -------------------------------------------------------------------------
115	// ELF header
116
117	#define EI_NIDENT 16
118
119	typedef struct {
120	unsigned char e_ident[EI_NIDENT];
121	Elf32_Half e_type;
122	Elf32_Half e_machine;
123	Elf32_Word e_version;
124	Elf32_Addr e_entry;
125	Elf32_Off e_phoff;
126	Elf32_Off e_shoff;
127	Elf32_Word e_flags;
128	Elf32_Half e_ehsize;
129	Elf32_Half e_phentsize;
130	Elf32_Half e_phnum;
131	Elf32_Half e_shentsize;
132	Elf32_Half e_shnum;
133	Elf32_Half e_shtrndx;
134	} Elf32_Ehdr;
135
136	typedef struct {
137	unsigned char e_ident[EI_NIDENT];
138	Elf64_Half e_type;
139	Elf64_Half e_machine;
140	Elf64_Word e_version;
141	Elf64_Addr e_entry;
142	Elf64_Off e_phoff;
143	Elf64_Off e_shoff;
144	Elf64_Word e_flags;
145	Elf64_Half e_ehsize;
146	Elf64_Half e_phentsize;
147	Elf64_Half e_phnum;
148	Elf64_Half e_shentsize;
149	Elf64_Half e_shnum;
150	Elf64_Half e_shtrndx;
151	} Elf64_Ehdr;
152
153	// -------------------------------------------------------------------------
154	/* e_ident[] identification indexes */
155
156	#define EI_MAG0 0 /* file ID */
157	#define EI_MAG1 1 /* file ID */
158	#define EI_MAG2 2 /* file ID */
159	#define EI_MAG3 3 /* file ID */
160	#define EI_CLASS 4 /* file class */
161	#define EI_DATA 5 /* data encoding */
162	#define EI_VERSION 6 /* ELF header version */
163	#define EI_OSABI 7 /* Operating system/ABI identification */
164	#define EI_ABIVERSION 8 /* ABI version */
165	#define EI_PAD 9 /* start of pad bytes */
166
167	// -------------------------------------------------------------------------
168	/* e_ident[] magic number */
169
170	#define ELFMAG0 0x7f /* e_ident[EI_MAG0] */
171	#define ELFMAG1 'E' /* e_ident[EI_MAG1] */
172	#define ELFMAG2 'L' /* e_ident[EI_MAG2] */
173	#define ELFMAG3 'F' /* e_ident[EI_MAG3] */
174	#define ELFMAG "\177ELF" /* magic */
175	#define SELFMAG 4 /* size of magic */
176
177	// -------------------------------------------------------------------------
178	/* e_ident[] file class */
179
180	#define ELFCLASSNONE 0 /* invalid */
181	#define ELFCLASS32 1 /* 32-bit objs */
182	#define ELFCLASS64 2 /* 64-bit objs */
183	#define ELFCLASSNUM 3 /* number of classes */
184
185	// -------------------------------------------------------------------------
186	/* e_ident[] data encoding */
187
188	#define ELFDATANONE 0 /* invalid */
189	#define ELFDATA2LSB 1 /* Little-Endian */
190	#define ELFDATA2MSB 2 /* Big-Endian */
191	#define ELFDATANUM 3 /* number of data encode defines */
192
193	// -------------------------------------------------------------------------
194	/* e_ident */
195
196	#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
197	(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
198	(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
199	(ehdr).e_ident[EI_MAG3] == ELFMAG3)
200
201	// -------------------------------------------------------------------------
202	/* e_type */
203
204	#define ET_NONE 0 /* No file type */
205	#define ET_REL 1 /* relocatable file */
206	#define ET_EXEC 2 /* executable file */
207	#define ET_DYN 3 /* shared object file */
208	#define ET_CORE 4 /* core file */
209	#define ET_NUM 5 /* number of types */
210	#define ET_LOOS 0xfe00 /* Operating system-specific */
211	#define ET_HIOS 0xfeff /* Operating system-specific */
212	#define ET_LOPROC 0xff00 /* reserved range for processor */
213	#define ET_HIPROC 0xffff /* specific e_type */
214
215	// -------------------------------------------------------------------------
216	/* e_machine */
217	// The following values taken from 22 June 2000 SysV ABI spec, updated with
218	// extra values from binutils elf/common.h.
219
220	#define EM_NONE 0 // No machine
221	#define EM_M32 1 // AT&T WE 32100
222	#define EM_SPARC 2 // SPARC
223	#define EM_386 3 // Intel 80386
224	#define EM_68K 4 // Motorola 68000
225	#define EM_88K 5 // Motorola 88000
226	#define EM_860 7 // Intel 80860
227	#define EM_MIPS 8 // MIPS I Architecture
228	#define EM_S370 9 // IBM System/370 Processor
229	#define EM_MIPS_RS3_LE 10 // MIPS RS3000 Little-endian
230	#define EM_PARISC 15 // Hewlett-Packard PA-RISC
231	#define EM_VPP500 17 // Fujitsu VPP500
232	#define EM_SPARC32PLUS 18 // Enhanced instruction set SPARC
233	#define EM_960 19 // Intel 80960
234	#define EM_PPC 20 // PowerPC
235	#define EM_PPC64 21 // 64-bit PowerPC
236	#define EM_V800 36 // NEC V800
237	#define EM_FR20 37 // Fujitsu FR20
238	#define EM_RH32 38 // TRW RH-32
239	#define EM_RCE 39 // Motorola RCE
240	#define EM_ARM 40 // Advanced RISC Machines ARM
241	#define EM_ALPHA 41 // Digital Alpha
242	#define EM_SH 42 // Hitachi SH
243	#define EM_SPARCV9 43 // SPARC Version 9
244	#define EM_TRICORE 44 // Siemens Tricore embedded processor
245	#define EM_ARC 45 // Argonaut RISC Core, Argonaut Technologies Inc.
246	#define EM_H8_300 46 // Hitachi H8/300
247	#define EM_H8_300H 47 // Hitachi H8/300H
248	#define EM_H8S 48 // Hitachi H8S
249	#define EM_H8_500 49 // Hitachi H8/500
250	#define EM_IA_64 50 // Intel IA-64 processor architecture
251	#define EM_MIPS_X 51 // Stanford MIPS-X
252	#define EM_COLDFIRE 52 // Motorola ColdFire
253	#define EM_68HC12 53 // Motorola M68HC12
254	#define EM_MMA 54 // Fujitsu MMA Multimedia Accelerator
255	#define EM_PCP 55 // Siemens PCP
256	#define EM_NCPU 56 // Sony nCPU embedded RISC processor
257	#define EM_NDR1 57 // Denso NDR1 microprocessor
258	#define EM_STARCORE 58 // Motorola Star*Core processor
259	#define EM_ME16 59 // Toyota ME16 processor
260	#define EM_ST100 60 // STMicroelectronics ST100 processor
261	#define EM_TINYJ 61 // Advanced Logic Corp. TinyJ embedded processor family
262	#define EM_FX66 66 // Siemens FX66 microcontroller
263	#define EM_ST9PLUS 67 // STMicroelectronics ST9+ 8/16 bit microcontroller
264	#define EM_ST7 68 // STMicroelectronics ST7 8-bit microcontroller
265	#define EM_68HC16 69 // Motorola MC68HC16 Microcontroller
266	#define EM_68HC11 70 // Motorola MC68HC11 Microcontroller
267	#define EM_68HC08 71 // Motorola MC68HC08 Microcontroller
268	#define EM_68HC05 72 // Motorola MC68HC05 Microcontroller
269	#define EM_SVX 73 // Silicon Graphics SVx
270	#define EM_ST19 74 // STMicroelectronics ST19 8-bit microcontroller
271	#define EM_VAX 75 // Digital VAX
272	#define EM_CRIS 76 // Axis Communications 32-bit embedded processor
273	#define EM_JAVELIN 77 // Infineon Technologies 32-bit embedded processor
274	#define EM_FIREPATH 78 // Element 14 64-bit DSP Processor
275	#define EM_ZSP 79 // LSI Logic 16-bit DSP Processor
276	#define EM_MMIX 80 // Donald Knuth's educational 64-bit processor
277	#define EM_HUANY 81 // Harvard University machine-independent object files
278	#define EM_PRISM 82 // SiTera Prism
279
280	/* Cygnus PowerPC ELF backend. Written in the absence of an ABI. */
281	#define EM_CYGNUS_POWERPC 0x9025
282
283	/* Old version of Sparc v9, from before the ABI; this should be
284	removed shortly. */
285	#define EM_OLD_SPARCV9 11
286
287	/* Old version of PowerPC, this should be removed shortly. */
288	#define EM_PPC_OLD 17
289
290	/* Cygnus ARC ELF backend. Written in the absence of an ABI. */
291	#define EM_CYGNUS_ARC 0x9040
292
293	/* Cygnus M32R ELF backend. Written in the absence of an ABI. */
294	#define EM_CYGNUS_M32R 0x9041
295
296	/* Alpha backend magic number. Written in the absence of an ABI. */
297	//#define EM_ALPHA 0x9026
298
299	/* D10V backend magic number. Written in the absence of an ABI. */
300	#define EM_CYGNUS_D10V 0x7650
301
302	/* D30V backend magic number. Written in the absence of an ABI. */
303	#define EM_CYGNUS_D30V 0x7676
304
305	/* V850 backend magic number. Written in the absense of an ABI. */
306	#define EM_CYGNUS_V850 0x9080
307
308	/* mn10200 and mn10300 backend magic numbers.
309	Written in the absense of an ABI. */
310	#define EM_CYGNUS_MN10200 0xdead
311	#define EM_CYGNUS_MN10300 0xbeef
312
313	/* FR30 magic number - no EABI available. */
314	#define EM_CYGNUS_FR30 0x3330
315
316	/* AVR magic number
317	Written in the absense of an ABI. */
318	#define EM_AVR 0x1057
319
320	// -------------------------------------------------------------------------
321	/* Version */
322
323	#define EV_NONE 0 /* Invalid */
324	#define EV_CURRENT 1 /* Current */
325	#define EV_NUM 2 /* number of versions */
326
327	// -------------------------------------------------------------------------
328	/* Section Header */
329
330	typedef struct {
331	Elf32_Word sh_name; /* name - index into section header
332	string table section */
333	Elf32_Word sh_type; /* type */
334	Elf32_Word sh_flags; /* flags */
335	Elf32_Addr sh_addr; /* address */
336	Elf32_Off sh_offset; /* file offset */
337	Elf32_Word sh_size; /* section size */
338	Elf32_Word sh_link; /* section header table index link */
339	Elf32_Word sh_info; /* extra information */
340	Elf32_Word sh_addralign; /* address alignment */
341	Elf32_Word sh_entsize; /* section entry size */
342	} Elf32_Shdr;
343
344	typedef struct {
345	Elf64_Word sh_name; /* section name */
346	Elf64_Word sh_type; /* section type */
347	Elf64_Xword sh_flags; /* section flags */
348	Elf64_Addr sh_addr; /* virtual address */
349	Elf64_Off sh_offset; /* file offset */
350	Elf64_Xword sh_size; /* section size */
351	Elf64_Word sh_link; /* link to another */
352	Elf64_Word sh_info; /* misc info */
353	Elf64_Xword sh_addralign; /* memory alignment */
354	Elf64_Xword sh_entsize; /* table entry size */
355	} Elf64_Shdr;
356
357	// -------------------------------------------------------------------------
358	/* Special Section Indexes */
359
360	#define SHN_UNDEF 0 /* undefined */
361	#define SHN_LORESERVE 0xff00 /* lower bounds of reserved indexes */
362	#define SHN_LOPROC 0xff00 /* reserved range for processor */
363	#define SHN_HIPROC 0xff1f /* specific section indexes */
364	#define SHN_LOOS 0xff20 /* reserved range for operating */
365	#define SHN_HIOS 0xff3f /* system specific section indexes */
366	#define SHN_ABS 0xfff1 /* absolute value */
367	#define SHN_COMMON 0xfff2 /* common symbol */
368	#define SHN_XINDEX 0xffff /* escape value for oversize index */
369	#define SHN_HIRESERVE 0xffff /* upper bounds of reserved indexes */
370
371	// -------------------------------------------------------------------------
372	/* sh_type */
373
374	#define SHT_NULL 0 /* inactive */
375	#define SHT_PROGBITS 1 /* program defined information */
376	#define SHT_SYMTAB 2 /* symbol table section */
377	#define SHT_STRTAB 3 /* string table section */
378	#define SHT_RELA 4 /* relocation section with addends*/
379	#define SHT_HASH 5 /* symbol hash table section */
380	#define SHT_DYNAMIC 6 /* dynamic section */
381	#define SHT_NOTE 7 /* note section */
382	#define SHT_NOBITS 8 /* no space section */
383	#define SHT_REL 9 /* relation section without addends */
384	#define SHT_SHLIB 10 /* reserved - purpose unknown */
385	#define SHT_DYNSYM 11 /* dynamic symbol table section */
386	#define SHT_INIT_ARRAY 14 /* init procedure array */
387	#define SHT_FINI_ARRAY 15 /* fini procedure array */
388	#define SHT_PREINIT_ARRAY 16 /* preinit procedure array */
389	#define SHT_GROUP 17 /* section group */
390	#define SHT_SYMTAB_SHNDX 18 /* oversize index table */
391	#define SHT_NUM 19 /* number of section types */
392	#define SHT_LOOS 0x60000000 /* reserved range for O/S */
393	#define SHT_HIOS 0x6fffffff /* specific section header types */
394	#define SHT_LOPROC 0x70000000 /* reserved range for processor */
395	#define SHT_HIPROC 0x7fffffff /* specific section header types */
396	#define SHT_LOUSER 0x80000000 /* reserved range for application */
397	#define SHT_HIUSER 0xffffffff /* specific indexes */
398
399	// -------------------------------------------------------------------------
400	/* Section names */
401
402	#define ELF_BSS ".bss" /* uninitialized data */
403	#define ELF_DATA ".data" /* initialized data */
404	#define ELF_DEBUG ".debug" /* debug */
405	#define ELF_DYNAMIC ".dynamic" /* dynamic linking information */
406	#define ELF_DYNSTR ".dynstr" /* dynamic string table */
407	#define ELF_DYNSYM ".dynsym" /* dynamic symbol table */
408	#define ELF_FINI ".fini" /* termination code */
409	#define ELF_GOT ".got" /* global offset table */
410	#define ELF_HASH ".hash" /* symbol hash table */
411	#define ELF_INIT ".init" /* initialization code */
412	#define ELF_REL_DATA ".rel.data" /* relocation data */
413	#define ELF_REL_FINI ".rel.fini" /* relocation termination code */
414	#define ELF_REL_INIT ".rel.init" /* relocation initialization code */
415	#define ELF_REL_DYN ".rel.dyn" /* relocaltion dynamic link info */
416	#define ELF_REL_RODATA ".rel.rodata" /* relocation read-only data */
417	#define ELF_REL_TEXT ".rel.text" /* relocation code */
418	#define ELF_RODATA ".rodata" /* read-only data */
419	#define ELF_SHSTRTAB ".shstrtab" /* section header string table */
420	#define ELF_STRTAB ".strtab" /* string table */
421	#define ELF_SYMTAB ".symtab" /* symbol table */
422	#define ELF_TEXT ".text" /* code */
423
424	// -------------------------------------------------------------------------
425	/* Section Attribute Flags - sh_flags */
426
427	#define SHF_WRITE 0x001 /* Writable */
428	#define SHF_ALLOC 0x002 /* occupies memory */
429	#define SHF_EXECINSTR 0x004 /* executable */
430	#define SHF_MERGE 0x010 /* merge data */
431	#define SHF_STRINGS 0x020 /* contains strings */
432	#define SHF_INFO_LINK 0x040 /* link in sh_info field */
433	#define SHF_LINK_ORDER 0x080 /* preserve link order */
434	#define SHF_OS_NONCONFORMING 0x100 /* special OS-specific */
435	/* processing needed */
436	#define SHF_GROUP 0x200 /* member of group */
437	#define SHF_MASKOS 0x0ff00000 /* reserved bits for OS */
438	/* specific section attributes */
439	#define SHF_MASKPROC 0xf0000000 /* reserved bits for processor */
440	/* specific section attributes */
441
442	// -------------------------------------------------------------------------
443	/* Symbol Table Entry */
444
445	typedef struct {
446	Elf32_Word st_name; /* name - index into string table */
447	Elf32_Addr st_value; /* symbol value */
448	Elf32_Word st_size; /* symbol size */
449	unsigned char st_info; /* type and binding */
450	unsigned char st_other; /* visibility */
451	Elf32_Half st_shndx; /* section header index */
452	} Elf32_Sym;
453
454	typedef struct {
455	Elf64_Word st_name; /* Symbol name index in str table */
456	unsigned char st_info; /* type / binding attrs */
457	unsigned char st_other; /* visibility */
458	Elf64_Half st_shndx; /* section index of symbol */
459	Elf64_Addr st_value; /* value of symbol */
460	Elf64_Xword st_size; /* size of symbol */
461	} Elf64_Sym;
462
463	// -------------------------------------------------------------------------
464	/* Symbol table index */
465
466	#define STN_UNDEF 0 /* undefined */
467
468	/* Extract symbol info - st_info */
469	#define ELF32_ST_BIND(x) ((x) >> 4)
470	#define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
471	#define ELF32_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
472
473	#define ELF64_ST_BIND(x) ((x) >> 4)
474	#define ELF64_ST_TYPE(x) (((unsigned int) x) & 0xf)
475	#define ELF64_ST_INFO(b,t) (((b) << 4) + ((t) & 0xf))
476
477	#define ELF32_ST_VISIBILITY(o) ((o)&0x3)
478	#define ELF64_ST_VISIBILITY(o) ((o)&0x3)
479
480	// -------------------------------------------------------------------------
481	/* Symbol Binding - ELF32_ST_BIND - st_info */
482
483	#define STB_LOCAL 0 /* Local symbol */
484	#define STB_GLOBAL 1 /* Global symbol */
485	#define STB_WEAK 2 /* like global - lower precedence */
486	#define STB_NUM 3 /* number of symbol bindings */
487	#define STB_LOOS 10 /* reserved range for OS */
488	#define STB_HIOS 12 /* specific symbol bindings */
489	#define STB_LOPROC 13 /* reserved range for processor */
490	#define STB_HIPROC 15 /* specific symbol bindings */
491
492	// -------------------------------------------------------------------------
493	/* Symbol type - ELF32_ST_TYPE - st_info */
494
495	#define STT_NOTYPE 0 /* not specified */
496	#define STT_OBJECT 1 /* data object */
497	#define STT_FUNC 2 /* function */
498	#define STT_SECTION 3 /* section */
499	#define STT_FILE 4 /* file */
500	#define STT_COMMON 5 /* common block */
501	#define STT_NUM 6 /* number of symbol types */
502	#define STT_LOOS 10 /* reserved range for OS */
503	#define STT_HIOS 12 /* specific symbol types */
504	#define STT_LOPROC 13 /* reserved range for processor */
505	#define STT_HIPROC 15 /* specific symbol types */
506
507	// -------------------------------------------------------------------------
508	// symbol visibility in st_other
509
510	#define STV_DEFAULT 0 /* default to binding type */
511	#define STV_INTERNAL 1 /* processor specific */
512	#define STV_HIDDEN 2 /* invisible */
513	#define STV_PROTECTED 3 /* non-premptable */
514
515	// -------------------------------------------------------------------------
516	// 32 bit relocation records
517
518	/* Relocation entry with implicit addend */
519	typedef struct
520	{
521	Elf32_Addr r_offset; /* offset of relocation */
522	Elf32_Word r_info; /* symbol table index and type */
523	} Elf32_Rel;
524
525	/* Relocation entry with explicit addend */
526	typedef struct
527	{
528	Elf32_Addr r_offset; /* offset of relocation */
529	Elf32_Word r_info; /* symbol table index and type */
530	Elf32_Sword r_addend;
531	} Elf32_Rela;
532
533	/* Extract relocation info - r_info */
534	#define ELF32_R_SYM(i) ((i) >> 8)
535	#define ELF32_R_TYPE(i) ((unsigned char) (i))
536	#define ELF32_R_INFO(s,t) (((s) << 8) + (unsigned char)(t))
537
538	// -------------------------------------------------------------------------
539	// 64 bit equivalents of above structures and macros.
540
541	typedef struct {
542	Elf64_Addr r_offset; /* where to do it */
543	Elf64_Xword r_info; /* index & type of relocation */
544	} Elf64_Rel;
545
546	typedef struct {
547	Elf64_Addr r_offset; /* where to do it */
548	Elf64_Xword r_info; /* index & type of relocation */
549	Elf64_Sxword r_addend; /* adjustment value */
550	} Elf64_RelA;
551
552	#define ELF64_R_SYM(info) ((info) >> 32)
553	#define ELF64_R_TYPE(info) ((info) & 0xFFFFFFFF)
554	#define ELF64_R_INFO(s,t) (((s) << 32) + (u_int32_t)(t))
555
556	// -------------------------------------------------------------------------
557	/* Program Header */
558
559	typedef struct {
560	Elf32_Word p_type; /* segment type */
561	Elf32_Off p_offset; /* segment offset */
562	Elf32_Addr p_vaddr; /* virtual address of segment */
563	Elf32_Addr p_paddr; /* physical address - ignored? */
564	Elf32_Word p_filesz; /* number of bytes in file for seg. */
565	Elf32_Word p_memsz; /* number of bytes in mem. for seg. */
566	Elf32_Word p_flags; /* flags */
567	Elf32_Word p_align; /* memory alignment */
568	} Elf32_Phdr;
569
570	typedef struct {
571	Elf64_Word p_type; /* entry type */
572	Elf64_Word p_flags; /* flags */
573	Elf64_Off p_offset; /* offset */
574	Elf64_Addr p_vaddr; /* virtual address */
575	Elf64_Addr p_paddr; /* physical address */
576	Elf64_Xword p_filesz; /* file size */
577	Elf64_Xword p_memsz; /* memory size */
578	Elf64_Xword p_align; /* memory & file alignment */
579	} Elf64_Phdr;
580
581	// -------------------------------------------------------------------------
582	/* Segment types - p_type */
583
584	#define PT_NULL 0 /* unused */
585	#define PT_LOAD 1 /* loadable segment */
586	#define PT_DYNAMIC 2 /* dynamic linking section */
587	#define PT_INTERP 3 /* the RTLD */
588	#define PT_NOTE 4 /* auxiliary information */
589	#define PT_SHLIB 5 /* reserved - purpose undefined */
590	#define PT_PHDR 6 /* program header */
591	#define PT_NUM 7 /* Number of segment types */
592	#define PT_LOOS 0x60000000 /* reserved range for OS */
593	#define PT_HIOS 0x6fffffff /* specific segment types */
594	#define PT_LOPROC 0x70000000 /* reserved range for processor */
595	#define PT_HIPROC 0x7fffffff /* specific segment types */
596
597	// -------------------------------------------------------------------------
598	/* Segment flags - p_flags */
599
600	#define PF_X 0x1 /* Executable */
601	#define PF_W 0x2 /* Writable */
602	#define PF_R 0x4 /* Readable */
603	#define PF_MASKOS 0x0ff00000 /* reserved bits for OS */
604	/* specific segment flags */
605	#define PF_MASKPROC 0xf0000000 /* reserved bits for processor */
606	/* specific segment flags */
607
608	// -------------------------------------------------------------------------
609	/* Dynamic structure */
610
611	typedef struct {
612	Elf32_Sword d_tag; /* controls meaning of d_val */
613	union {
614	Elf32_Word d_val; /* Multiple meanings - see d_tag */
615	Elf32_Addr d_ptr; /* program virtual address */
616	} d_un;
617	} Elf32_Dyn;
618
619	extern Elf32_Dyn _DYNAMIC[]; /* XXX not 64-bit clean */
620
621	typedef struct {
622	Elf64_Sxword d_tag; /* controls meaning of d_val */
623	union {
624	Elf64_Xword d_val;
625	Elf64_Addr d_ptr;
626	} d_un;
627	} Elf64_Dyn;
628
629	// -------------------------------------------------------------------------
630	/* Dynamic Array Tags - d_tag */
631
632	#define DT_NULL 0 /* marks end of _DYNAMIC array */
633	#define DT_NEEDED 1 /* string table offset of needed lib */
634	#define DT_PLTRELSZ 2 /* size of relocation entries in PLT */
635	#define DT_PLTGOT 3 /* address PLT/GOT */
636	#define DT_HASH 4 /* address of symbol hash table */
637	#define DT_STRTAB 5 /* address of string table */
638	#define DT_SYMTAB 6 /* address of symbol table */
639	#define DT_RELA 7 /* address of relocation table */
640	#define DT_RELASZ 8 /* size of relocation table */
641	#define DT_RELAENT 9 /* size of relocation entry */
642	#define DT_STRSZ 10 /* size of string table */
643	#define DT_SYMENT 11 /* size of symbol table entry */
644	#define DT_INIT 12 /* address of initialization func. */
645	#define DT_FINI 13 /* address of termination function */
646	#define DT_SONAME 14 /* string table offset of shared obj */
647	#define DT_RPATH 15 /* string table offset of library
648	search path */
649	#define DT_SYMBOLIC 16 /* start sym search in shared obj. */
650	#define DT_REL 17 /* address of rel. tbl. w addends */
651	#define DT_RELSZ 18 /* size of DT_REL relocation table */
652	#define DT_RELENT 19 /* size of DT_REL relocation entry */
653	#define DT_PLTREL 20 /* PLT referenced relocation entry */
654	#define DT_DEBUG 21 /* bugger */
655	#define DT_TEXTREL 22 /* Allow rel. mod. to unwritable seg */
656	#define DT_JMPREL 23 /* add. of PLT's relocation entries */
657	#define DT_BIND_NOW 24 /* Bind now regardless of env setting */
658	#define DT_INIT_ARRAY 25 /* init array address */
659	#define DT_FINI_ARRAY 26 /* fini array address */
660	#define DT_INIT_ARRAYSZ 27 /* init array size */
661	#define DT_FINI_ARRAYSZ 28 /* fini array size */
662	#define DT_RUNPATH 29 /* library search path */
663	#define DT_FLAGS 30 /* flags */
664	#define DT_ENCODING 32 /* encoding rules start here */
665	#define DT_PREINIT_ARRAY 32 /* preinit array address */
666	#define DT_PREINIT_ARRAYSZ 33 /* preinit array size */
667	#define DT_NUM 26 /* Number used. */
668	#define DT_LOOS 0x60000000 /* reserved range for OS */
669	#define DT_HIOS 0x6fffffff /* specific dynamic array tags */
670	#define DT_LOPROC 0x70000000 /* reserved range for processor */
671	#define DT_HIPROC 0x7fffffff /* specific dynamic array tags */
672
673	// -------------------------------------------------------------------------
674	// Values for DT_FLAGS entry
675
676	#define DF_ORIGIN 0x1 /* Uses $ORIGIN substitution string */
677	#define DF_SYMBOLIC 0x2 /* search for symbols here first */
678	#define DF_TEXTREL 0x4 /* text may be relocatable */
679	#define DF_BIND_NOW 0x8 /* bind references now, dammit */
680
681	// -------------------------------------------------------------------------
682	/* Note Definitions */
683
684	typedef struct {
685	Elf32_Word namesz;
686	Elf32_Word descsz;
687	Elf32_Word type;
688	} Elf32_Note;
689
690	typedef struct {
691	Elf64_Word namesz;
692	Elf64_Word descsz;
693	Elf64_Word type;
694	} Elf64_Note;
695
696	// -------------------------------------------------------------------------
697	// Hash table structure
698	// The same structure is used by both 32 and 64 bit formats
699
700	typedef struct {
701	Elf32_Word nbucket; /* number of buckets */
702	Elf32_Word nchain; /* number of chains */
703
704	/* The buckets follow this structure in memory and the chains
705	follow those. */
706	} Elf_Hash;
707
708	// -------------------------------------------------------------------------
709	#endif // ifndef CYGONCE_REDBOOT_ELF_H
710	// EOF elf.h

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