xref: /minix/sys/sys/exec_elf.h (revision ace2de0a)
1 /*	$NetBSD: exec_elf.h,v 1.149 2015/07/30 15:28:18 maxv Exp $	*/
2 
3 /*-
4  * Copyright (c) 1994 The NetBSD Foundation, Inc.
5  * All rights reserved.
6  *
7  * This code is derived from software contributed to The NetBSD Foundation
8  * by Christos Zoulas.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. Redistributions in binary form must reproduce the above copyright
16  *    notice, this list of conditions and the following disclaimer in the
17  *    documentation and/or other materials provided with the distribution.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29  * POSSIBILITY OF SUCH DAMAGE.
30  */
31 
32 #ifndef _SYS_EXEC_ELF_H_
33 #define _SYS_EXEC_ELF_H_
34 
35 /*
36  * The current ELF ABI specification is available at:
37  *	http://www.sco.com/developers/gabi/
38  *
39  * Current header definitions are in:
40  *	http://www.sco.com/developers/gabi/latest/ch4.eheader.html
41  */
42 
43 #if defined(_KERNEL) || defined(_STANDALONE)
44 #include <sys/types.h>
45 #else
46 #include <inttypes.h>
47 #endif /* _KERNEL || _STANDALONE */
48 
49 #ifdef   _BSD_SIZE_T_
50 typedef  _BSD_SIZE_T_    size_t;
51 #undef   _BSD_SIZE_T_
52 #endif
53 
54 #if HAVE_NBTOOL_CONFIG_H
55 #include <nbinclude/machine/elf_machdep.h>
56 #else
57 #include <machine/elf_machdep.h>
58 #endif
59 
60 typedef uint8_t		Elf_Byte;
61 
62 typedef uint32_t	Elf32_Addr;
63 #define ELF32_FSZ_ADDR	4
64 typedef uint32_t	Elf32_Off;
65 typedef int32_t		Elf32_SOff;
66 #define ELF32_FSZ_OFF	4
67 typedef int32_t		Elf32_Sword;
68 #define ELF32_FSZ_SWORD 4
69 typedef uint32_t	Elf32_Word;
70 #define ELF32_FSZ_WORD	4
71 typedef uint16_t	Elf32_Half;
72 #define ELF32_FSZ_HALF	2
73 typedef uint64_t	Elf32_Lword;
74 #define ELF32_FSZ_LWORD 8
75 
76 typedef uint64_t	Elf64_Addr;
77 #define ELF64_FSZ_ADDR	8
78 typedef uint64_t	Elf64_Off;
79 typedef int64_t		Elf64_SOff;
80 #define ELF64_FSZ_OFF	8
81 
82 typedef int32_t		Elf64_Sword;
83 #define ELF64_FSZ_SWORD 4
84 typedef uint32_t	Elf64_Word;
85 #define ELF64_FSZ_WORD	4
86 
87 typedef int64_t		Elf64_Sxword;
88 #define ELF64_FSZ_SXWORD 8
89 typedef uint64_t	Elf64_Xword;
90 #define ELF64_FSZ_XWORD 8
91 typedef uint64_t	Elf64_Lword;
92 #define ELF64_FSZ_LWORD 8
93 typedef uint16_t	Elf64_Half;
94 #define ELF64_FSZ_HALF 2
95 
96 /*
97  * ELF Header
98  */
99 #define ELF_NIDENT	16
100 
101 typedef struct {
102 	unsigned char	e_ident[ELF_NIDENT];	/* Id bytes */
103 	Elf32_Half	e_type;			/* file type */
104 	Elf32_Half	e_machine;		/* machine type */
105 	Elf32_Word	e_version;		/* version number */
106 	Elf32_Addr	e_entry;		/* entry point */
107 	Elf32_Off	e_phoff;		/* Program hdr offset */
108 	Elf32_Off	e_shoff;		/* Section hdr offset */
109 	Elf32_Word	e_flags;		/* Processor flags */
110 	Elf32_Half	e_ehsize;		/* sizeof ehdr */
111 	Elf32_Half	e_phentsize;		/* Program header entry size */
112 	Elf32_Half	e_phnum;		/* Number of program headers */
113 	Elf32_Half	e_shentsize;		/* Section header entry size */
114 	Elf32_Half	e_shnum;		/* Number of section headers */
115 	Elf32_Half	e_shstrndx;		/* String table index */
116 } Elf32_Ehdr;
117 
118 typedef struct {
119 	unsigned char	e_ident[ELF_NIDENT];	/* Id bytes */
120 	Elf64_Half	e_type;			/* file type */
121 	Elf64_Half	e_machine;		/* machine type */
122 	Elf64_Word	e_version;		/* version number */
123 	Elf64_Addr	e_entry;		/* entry point */
124 	Elf64_Off	e_phoff;		/* Program hdr offset */
125 	Elf64_Off	e_shoff;		/* Section hdr offset */
126 	Elf64_Word	e_flags;		/* Processor flags */
127 	Elf64_Half	e_ehsize;		/* sizeof ehdr */
128 	Elf64_Half	e_phentsize;		/* Program header entry size */
129 	Elf64_Half	e_phnum;		/* Number of program headers */
130 	Elf64_Half	e_shentsize;		/* Section header entry size */
131 	Elf64_Half	e_shnum;		/* Number of section headers */
132 	Elf64_Half	e_shstrndx;		/* String table index */
133 } Elf64_Ehdr;
134 
135 /* e_ident offsets */
136 #define EI_MAG0		0	/* '\177' */
137 #define EI_MAG1		1	/* 'E'	  */
138 #define EI_MAG2		2	/* 'L'	  */
139 #define EI_MAG3		3	/* 'F'	  */
140 #define EI_CLASS	4	/* File class */
141 #define EI_DATA		5	/* Data encoding */
142 #define EI_VERSION	6	/* File version */
143 #define EI_OSABI	7	/* Operating system/ABI identification */
144 #define EI_ABIVERSION	8	/* ABI version */
145 #define EI_PAD		9	/* Start of padding bytes up to EI_NIDENT*/
146 #define EI_NIDENT	16	/* First non-ident header byte */
147 
148 /* e_ident[EI_MAG0,EI_MAG3] */
149 #define ELFMAG0		0x7f
150 #define ELFMAG1		'E'
151 #define ELFMAG2		'L'
152 #define ELFMAG3		'F'
153 #define ELFMAG		"\177ELF"
154 #define SELFMAG		4
155 
156 /* e_ident[EI_CLASS] */
157 #define ELFCLASSNONE	0	/* Invalid class */
158 #define ELFCLASS32	1	/* 32-bit objects */
159 #define ELFCLASS64	2	/* 64-bit objects */
160 #define ELFCLASSNUM	3
161 
162 /* e_ident[EI_DATA] */
163 #define ELFDATANONE	0	/* Invalid data encoding */
164 #define ELFDATA2LSB	1	/* 2's complement values, LSB first */
165 #define ELFDATA2MSB	2	/* 2's complement values, MSB first */
166 
167 /* e_ident[EI_VERSION] */
168 #define EV_NONE		0	/* Invalid version */
169 #define EV_CURRENT	1	/* Current version */
170 #define EV_NUM		2
171 
172 /* e_ident[EI_OSABI] */
173 #define ELFOSABI_SYSV		0	/* UNIX System V ABI */
174 #define ELFOSABI_HPUX		1	/* HP-UX operating system */
175 #define ELFOSABI_NETBSD		2	/* NetBSD */
176 #define ELFOSABI_LINUX		3	/* GNU/Linux */
177 #define ELFOSABI_HURD		4	/* GNU/Hurd */
178 #define ELFOSABI_86OPEN		5	/* 86Open */
179 #define ELFOSABI_SOLARIS	6	/* Solaris */
180 #define ELFOSABI_MONTEREY	7	/* Monterey */
181 #define ELFOSABI_IRIX		8	/* IRIX */
182 #define ELFOSABI_FREEBSD	9	/* FreeBSD */
183 #define ELFOSABI_TRU64		10	/* TRU64 UNIX */
184 #define ELFOSABI_MODESTO	11	/* Novell Modesto */
185 #define ELFOSABI_OPENBSD	12	/* OpenBSD */
186 #define ELFOSABI_OPENVMS	13	/* OpenVMS */
187 #define ELFOSABI_NSK		14	/* HP Non-Stop Kernel */
188 #define ELFOSABI_AROS		15	/* Amiga Research OS */
189 /* Unofficial OSABIs follow */
190 #define ELFOSABI_ARM		97	/* ARM */
191 #define ELFOSABI_STANDALONE	255	/* Standalone (embedded) application */
192 
193 #define ELFOSABI_NONE		ELFOSABI_SYSV
194 #define ELFOSABI_AIX		ELFOSABI_MONTEREY
195 
196 /* e_type */
197 #define ET_NONE		0	/* No file type */
198 #define ET_REL		1	/* Relocatable file */
199 #define ET_EXEC		2	/* Executable file */
200 #define ET_DYN		3	/* Shared object file */
201 #define ET_CORE		4	/* Core file */
202 #define ET_NUM		5
203 
204 #define ET_LOOS		0xfe00	/* Operating system specific range */
205 #define ET_HIOS		0xfeff
206 #define ET_LOPROC	0xff00	/* Processor-specific range */
207 #define ET_HIPROC	0xffff
208 
209 /* e_machine */
210 #define EM_NONE		0	/* No machine */
211 #define EM_M32		1	/* AT&T WE 32100 */
212 #define EM_SPARC	2	/* SPARC */
213 #define EM_386		3	/* Intel 80386 */
214 #define EM_68K		4	/* Motorola 68000 */
215 #define EM_88K		5	/* Motorola 88000 */
216 #define EM_486		6	/* Intel 80486 */
217 #define EM_860		7	/* Intel 80860 */
218 #define EM_MIPS		8	/* MIPS I Architecture */
219 #define EM_S370		9	/* Amdahl UTS on System/370 */
220 #define EM_MIPS_RS3_LE	10	/* MIPS RS3000 Little-endian */
221 			/* 11-14 - Reserved */
222 #define EM_RS6000	11	/* IBM RS/6000 XXX reserved */
223 #define EM_PARISC	15	/* Hewlett-Packard PA-RISC */
224 #define EM_NCUBE	16	/* NCube XXX reserved */
225 #define EM_VPP500	17	/* Fujitsu VPP500 */
226 #define EM_SPARC32PLUS	18	/* Enhanced instruction set SPARC */
227 #define EM_960		19	/* Intel 80960 */
228 #define EM_PPC		20	/* PowerPC */
229 #define EM_PPC64	21	/* 64-bit PowerPC */
230 			/* 22-35 - Reserved */
231 #define EM_S390		22	/* System/390 XXX reserved */
232 #define EM_V800		36	/* NEC V800 */
233 #define EM_FR20		37	/* Fujitsu FR20 */
234 #define EM_RH32		38	/* TRW RH-32 */
235 #define EM_RCE		39	/* Motorola RCE */
236 #define EM_ARM		40	/* Advanced RISC Machines ARM */
237 #define EM_ALPHA	41	/* DIGITAL Alpha */
238 #define EM_SH		42	/* Hitachi Super-H */
239 #define EM_SPARCV9	43	/* SPARC Version 9 */
240 #define EM_TRICORE	44	/* Siemens Tricore */
241 #define EM_ARC		45	/* Argonaut RISC Core */
242 #define EM_H8_300	46	/* Hitachi H8/300 */
243 #define EM_H8_300H	47	/* Hitachi H8/300H */
244 #define EM_H8S		48	/* Hitachi H8S */
245 #define EM_H8_500	49	/* Hitachi H8/500 */
246 #define EM_IA_64	50	/* Intel Merced Processor */
247 #define EM_MIPS_X	51	/* Stanford MIPS-X */
248 #define EM_COLDFIRE	52	/* Motorola Coldfire */
249 #define EM_68HC12	53	/* Motorola MC68HC12 */
250 #define EM_MMA		54	/* Fujitsu MMA Multimedia Accelerator */
251 #define EM_PCP		55	/* Siemens PCP */
252 #define EM_NCPU		56	/* Sony nCPU embedded RISC processor */
253 #define EM_NDR1		57	/* Denso NDR1 microprocessor */
254 #define EM_STARCORE	58	/* Motorola Star*Core processor */
255 #define EM_ME16		59	/* Toyota ME16 processor */
256 #define EM_ST100	60	/* STMicroelectronics ST100 processor */
257 #define EM_TINYJ	61	/* Advanced Logic Corp. TinyJ embedded family processor */
258 #define EM_X86_64	62	/* AMD x86-64 architecture */
259 #define EM_PDSP		63	/* Sony DSP Processor */
260 #define EM_PDP10	64	/* Digital Equipment Corp. PDP-10 */
261 #define EM_PDP11	65	/* Digital Equipment Corp. PDP-11 */
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 CPU */
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 CPU */
274 #define EM_FIREPATH	78	/* Element 14 64-bit DSP processor */
275 #define EM_ZSP		79	/* LSI Logic's 16-bit DSP processor */
276 #define EM_MMIX		80	/* Donald Knuth's educational 64-bit processor */
277 #define EM_HUANY	81	/* Harvard's machine-independent format */
278 #define EM_PRISM	82	/* SiTera Prism */
279 #define EM_AVR		83	/* Atmel AVR 8-bit microcontroller */
280 #define EM_FR30		84	/* Fujitsu FR30 */
281 #define EM_D10V		85	/* Mitsubishi D10V */
282 #define EM_D30V		86	/* Mitsubishi D30V */
283 #define EM_V850		87	/* NEC v850 */
284 #define EM_M32R		88	/* Mitsubishi M32R */
285 #define EM_MN10300	89	/* Matsushita MN10300 */
286 #define EM_MN10200	90	/* Matsushita MN10200 */
287 #define EM_PJ		91	/* picoJava */
288 #define EM_OR1K		92	/* OpenRISC 32-bit embedded processor */
289 #define EM_OPENRISC	EM_OR1K
290 #define EM_ARC_A5	93	/* ARC Cores Tangent-A5 */
291 #define EM_XTENSA	94	/* Tensilica Xtensa Architecture */
292 #define EM_VIDEOCORE	95	/* Alphamosaic VideoCore processor */
293 #define EM_TMM_GPP	96	/* Thompson Multimedia General Purpose Processor */
294 #define EM_NS32K	97	/* National Semiconductor 32000 series */
295 #define EM_TPC		98	/* Tenor Network TPC processor */
296 #define EM_SNP1K	99	/* Trebia SNP 1000 processor */
297 #define EM_ST200	100	/* STMicroelectronics ST200 microcontroller */
298 #define EM_IP2K		101	/* Ubicom IP2xxx microcontroller family */
299 #define EM_MAX		102	/* MAX processor */
300 #define EM_CR		103	/* National Semiconductor CompactRISC micorprocessor */
301 #define EM_F2MC16	104	/* Fujitsu F2MC16 */
302 #define EM_MSP430	105	/* Texas Instruments MSP430 */
303 #define EM_BLACKFIN	106	/* Analog Devices Blackfin DSP */
304 #define EM_SE_C33	107	/* Seiko Epson S1C33 family */
305 #define EM_SEP		108	/* Sharp embedded microprocessor */
306 #define EM_ARCA		109	/* Arca RISC microprocessor */
307 #define EM_UNICORE	110	/* UNICORE from PKU-Unity Ltd. and MPRC Peking University */
308 #define EM_ALTERA_NIOS2	113	/* Altera Nios II soft-core processor */
309 #define EM_AARCH64	183	/* AArch64 64-bit ARM microprocessor */
310 #define EM_AVR32	185	/* Atmel Corporation 32-bit microprocessor family*/
311 #define EM_TILE64	187	/* Tilera TILE64 multicore architecture family */
312 #define EM_TILEPRO	188	/* Tilera TILEPro multicore architecture family */
313 #define EM_MICROBLAZE	189	/* Xilinx MicroBlaze 32-bit RISC soft processor core */
314 #define EM_TILEGX	192	/* Tilera TILE-GX multicore architecture family */
315 #define EM_Z80		220	/* Zilog Z80 */
316 #define EM_RISCV	243	/* RISC-V */
317 
318 /* Unofficial machine types follow */
319 #define EM_ALPHA_EXP	36902	/* used by NetBSD/alpha; obsolete */
320 #define EM_NUM		36903
321 
322 /*
323  * Program Header
324  */
325 typedef struct {
326 	Elf32_Word	p_type;		/* entry type */
327 	Elf32_Off	p_offset;	/* offset */
328 	Elf32_Addr	p_vaddr;	/* virtual address */
329 	Elf32_Addr	p_paddr;	/* physical address */
330 	Elf32_Word	p_filesz;	/* file size */
331 	Elf32_Word	p_memsz;	/* memory size */
332 	Elf32_Word	p_flags;	/* flags */
333 	Elf32_Word	p_align;	/* memory & file alignment */
334 } Elf32_Phdr;
335 
336 typedef struct {
337 	Elf64_Word	p_type;		/* entry type */
338 	Elf64_Word	p_flags;	/* flags */
339 	Elf64_Off	p_offset;	/* offset */
340 	Elf64_Addr	p_vaddr;	/* virtual address */
341 	Elf64_Addr	p_paddr;	/* physical address */
342 	Elf64_Xword	p_filesz;	/* file size */
343 	Elf64_Xword	p_memsz;	/* memory size */
344 	Elf64_Xword	p_align;	/* memory & file alignment */
345 } Elf64_Phdr;
346 
347 /* p_type */
348 #define PT_NULL		0		/* Program header table entry unused */
349 #define PT_LOAD		1		/* Loadable program segment */
350 #define PT_DYNAMIC	2		/* Dynamic linking information */
351 #define PT_INTERP	3		/* Program interpreter */
352 #define PT_NOTE		4		/* Auxiliary information */
353 #define PT_SHLIB	5		/* Reserved, unspecified semantics */
354 #define PT_PHDR		6		/* Entry for header table itself */
355 #define PT_TLS		7		/* TLS initialisation image */
356 #define PT_NUM		8
357 
358 #define PT_LOOS		0x60000000	/* OS-specific range */
359 
360 /* GNU-specific */
361 #define PT_GNU_EH_FRAME 0x6474e550	/* EH frame segment */
362 #define PT_GNU_STACK	0x6474e551	/* Indicate executable stack */
363 #define PT_GNU_RELRO	0x6474e552	/* Make read-only after relocation */
364 
365 #define PT_HIOS		0x6fffffff
366 #define PT_LOPROC	0x70000000	/* Processor-specific range */
367 #define PT_HIPROC	0x7fffffff
368 
369 #define PT_MIPS_REGINFO 0x70000000
370 
371 /* p_flags */
372 #define PF_R		0x4		/* Segment is readable */
373 #define PF_W		0x2		/* Segment is writable */
374 #define PF_X		0x1		/* Segment is executable */
375 
376 #define PF_MASKOS	0x0ff00000	/* Operating system specific values */
377 #define PF_MASKPROC	0xf0000000	/* Processor-specific values */
378 
379 /* Extended program header index. */
380 #define PN_XNUM		0xffff
381 
382 /*
383  * Section Headers
384  */
385 typedef struct {
386 	Elf32_Word	sh_name;	/* section name (.shstrtab index) */
387 	Elf32_Word	sh_type;	/* section type */
388 	Elf32_Word	sh_flags;	/* section flags */
389 	Elf32_Addr	sh_addr;	/* virtual address */
390 	Elf32_Off	sh_offset;	/* file offset */
391 	Elf32_Word	sh_size;	/* section size */
392 	Elf32_Word	sh_link;	/* link to another */
393 	Elf32_Word	sh_info;	/* misc info */
394 	Elf32_Word	sh_addralign;	/* memory alignment */
395 	Elf32_Word	sh_entsize;	/* table entry size */
396 } Elf32_Shdr;
397 
398 typedef struct {
399 	Elf64_Word	sh_name;	/* section name (.shstrtab index) */
400 	Elf64_Word	sh_type;	/* section type */
401 	Elf64_Xword	sh_flags;	/* section flags */
402 	Elf64_Addr	sh_addr;	/* virtual address */
403 	Elf64_Off	sh_offset;	/* file offset */
404 	Elf64_Xword	sh_size;	/* section size */
405 	Elf64_Word	sh_link;	/* link to another */
406 	Elf64_Word	sh_info;	/* misc info */
407 	Elf64_Xword	sh_addralign;	/* memory alignment */
408 	Elf64_Xword	sh_entsize;	/* table entry size */
409 } Elf64_Shdr;
410 
411 /* sh_type */
412 #define SHT_NULL	      0		/* Section header table entry unused */
413 #define SHT_PROGBITS	      1		/* Program information */
414 #define SHT_SYMTAB	      2		/* Symbol table */
415 #define SHT_STRTAB	      3		/* String table */
416 #define SHT_RELA	      4		/* Relocation information w/ addend */
417 #define SHT_HASH	      5		/* Symbol hash table */
418 #define SHT_DYNAMIC	      6		/* Dynamic linking information */
419 #define SHT_NOTE	      7		/* Auxiliary information */
420 #define SHT_NOBITS	      8		/* No space allocated in file image */
421 #define SHT_REL		      9		/* Relocation information w/o addend */
422 #define SHT_SHLIB	     10		/* Reserved, unspecified semantics */
423 #define SHT_DYNSYM	     11		/* Symbol table for dynamic linker */
424 #define SHT_INIT_ARRAY	     14		/* Initialization function pointers */
425 #define SHT_FINI_ARRAY	     15		/* Termination function pointers */
426 #define SHT_PREINIT_ARRAY    16		/* Pre-initialization function ptrs */
427 #define SHT_GROUP	     17		/* Section group */
428 #define SHT_SYMTAB_SHNDX     18		/* Section indexes (see SHN_XINDEX) */
429 #define SHT_NUM		     19
430 
431 #define SHT_LOOS	     0x60000000 /* Operating system specific range */
432 #define SHT_GNU_INCREMENTAL_INPUTS 0x6fff4700   /* GNU incremental build data */
433 #define	SHT_LOSUNW	     0x6ffffff4
434 #define	SHT_SUNW_dof	     0x6ffffff4
435 #define	SHT_GNU_ATTRIBUTES   0x6ffffff5	/* GNU object attributes */
436 #define	SHT_SUNW_cap	     0x6ffffff5
437 #define	SHT_SUNW_SIGNATURE   0x6ffffff6
438 #define SHT_GNU_HASH	     0x6ffffff6 /* GNU style symbol hash table */
439 #define SHT_GNU_LIBLIST	     0x6ffffff7 /* GNU list of prelink dependencies */
440 #define SHT_SUNW_move	     0x6ffffffa
441 #define	SHT_SUNW_COMDAT	     0x6ffffffb
442 #define SHT_SUNW_syminfo     0x6ffffffc
443 #define SHT_SUNW_verdef	     0x6ffffffd /* Versions defined by file */
444 #define SHT_GNU_verdef	     SHT_SUNW_verdef
445 #define SHT_SUNW_verneed     0x6ffffffe /* Versions needed by file */
446 #define SHT_GNU_verneed	     SHT_SUNW_verneed
447 #define SHT_SUNW_versym	     0x6fffffff /* Symbol versions */
448 #define SHT_GNU_versym	     SHT_SUNW_versym
449 #define	SHT_HISUNW	     0x6fffffff
450 #define SHT_HIOS	     0x6fffffff
451 #define SHT_LOPROC	     0x70000000 /* Processor-specific range */
452 #define SHT_AMD64_UNWIND     0x70000001 /* unwind information */
453 #define SHT_ARM_EXIDX	     0x70000001	/* exception index table */
454 #define SHT_ARM_PREEMPTMAP   0x70000002 /* BPABI DLL dynamic linking
455 					 * pre-emption map */
456 #define SHT_ARM_ATTRIBUTES   0x70000003 /* Object file compatibility
457 					 * attributes */
458 #define SHT_ARM_DEBUGOVERLAY 0x70000004 /* See DBGOVL for details */
459 #define SHT_ARM_OVERLAYSECTION 0x70000005
460 #define	SHT_MIPS_REGINFO     0x70000006
461 #define	SHT_MIPS_OPTIONS     0x7000000d
462 #define	SHT_MIPS_DWARF	     0x7000001e	/* MIPS gcc uses MIPS_DWARF */
463 #define SHT_HIPROC	     0x7fffffff
464 #define SHT_LOUSER	     0x80000000 /* Application-specific range */
465 #define SHT_HIUSER	     0xffffffff
466 
467 /* sh_flags */
468 #define SHF_WRITE	     0x00000001 /* Contains writable data */
469 #define SHF_ALLOC	     0x00000002 /* Occupies memory */
470 #define SHF_EXECINSTR	     0x00000004 /* Contains executable insns */
471 #define SHF_MERGE	     0x00000010 /* Might be merged */
472 #define SHF_STRINGS	     0x00000020 /* Contains nul terminated strings */
473 #define SHF_INFO_LINK	     0x00000040 /* "sh_info" contains SHT index */
474 #define SHF_LINK_ORDER	     0x00000080 /* Preserve order after combining */
475 #define SHF_OS_NONCONFORMING 0x00000100 /* OS specific handling required */
476 #define SHF_GROUP	     0x00000200 /* Is member of a group */
477 #define SHF_TLS		     0x00000400 /* Holds thread-local data */
478 #define SHF_MASKOS	     0x0ff00000 /* Operating system specific values */
479 #define SHF_MASKPROC	     0xf0000000 /* Processor-specific values */
480 #define SHF_ORDERED	     0x40000000 /* Ordering requirement (Solaris) */
481 #define SHF_EXCLUDE	     0x80000000 /* Excluded unless unles ref/alloc
482 					   (Solaris).*/
483 /*
484  * Symbol Table
485  */
486 typedef struct {
487 	Elf32_Word	st_name;	/* Symbol name (.strtab index) */
488 	Elf32_Word	st_value;	/* value of symbol */
489 	Elf32_Word	st_size;	/* size of symbol */
490 	Elf_Byte	st_info;	/* type / binding attrs */
491 	Elf_Byte	st_other;	/* unused */
492 	Elf32_Half	st_shndx;	/* section index of symbol */
493 } Elf32_Sym;
494 
495 typedef struct {
496 	Elf64_Word	st_name;	/* Symbol name (.strtab index) */
497 	Elf_Byte	st_info;	/* type / binding attrs */
498 	Elf_Byte	st_other;	/* unused */
499 	Elf64_Half	st_shndx;	/* section index of symbol */
500 	Elf64_Addr	st_value;	/* value of symbol */
501 	Elf64_Xword	st_size;	/* size of symbol */
502 } Elf64_Sym;
503 
504 /* Symbol Table index of the undefined symbol */
505 #define ELF_SYM_UNDEFINED	0
506 
507 #define STN_UNDEF		0	/* undefined index */
508 
509 /* st_info: Symbol Bindings */
510 #define STB_LOCAL		0	/* local symbol */
511 #define STB_GLOBAL		1	/* global symbol */
512 #define STB_WEAK		2	/* weakly defined global symbol */
513 #define STB_NUM			3
514 
515 #define STB_LOOS		10	/* Operating system specific range */
516 #define STB_HIOS		12
517 #define STB_LOPROC		13	/* Processor-specific range */
518 #define STB_HIPROC		15
519 
520 /* st_info: Symbol Types */
521 #define STT_NOTYPE		0	/* Type not specified */
522 #define STT_OBJECT		1	/* Associated with a data object */
523 #define STT_FUNC		2	/* Associated with a function */
524 #define STT_SECTION		3	/* Associated with a section */
525 #define STT_FILE		4	/* Associated with a file name */
526 #define STT_COMMON		5	/* Uninitialised common block */
527 #define STT_TLS			6	/* Thread local data object */
528 #define STT_NUM			7
529 
530 #define STT_LOOS		10	/* Operating system specific range */
531 #define STT_GNU_IFUNC		10	/* GNU extension: indirect function */
532 #define STT_HIOS		12
533 #define STT_LOPROC		13	/* Processor-specific range */
534 #define STT_HIPROC		15
535 
536 /* st_other: Visibility Types */
537 #define STV_DEFAULT		0	/* use binding type */
538 #define STV_INTERNAL		1	/* not referenced from outside */
539 #define STV_HIDDEN		2	/* not visible, may be used via ptr */
540 #define STV_PROTECTED		3	/* visible, not preemptible */
541 #define STV_EXPORTED		4
542 #define STV_SINGLETON		5
543 #define STV_ELIMINATE		6
544 
545 /* st_info/st_other utility macros */
546 #define ELF_ST_BIND(info)		((uint32_t)(info) >> 4)
547 #define ELF_ST_TYPE(info)		((uint32_t)(info) & 0xf)
548 #define ELF_ST_INFO(bind,type)		((Elf_Byte)(((bind) << 4) | \
549 					 ((type) & 0xf)))
550 #define ELF_ST_VISIBILITY(other)	((uint32_t)(other) & 3)
551 
552 /*
553  * Special section indexes
554  */
555 #define SHN_UNDEF	0		/* Undefined section */
556 
557 #define SHN_LORESERVE	0xff00		/* Reserved range */
558 #define SHN_ABS		0xfff1		/*  Absolute symbols */
559 #define SHN_COMMON	0xfff2		/*  Common symbols */
560 #define SHN_XINDEX	0xffff		/* Escape -- index stored elsewhere */
561 #define SHN_HIRESERVE	0xffff
562 
563 #define SHN_LOPROC	0xff00		/* Processor-specific range */
564 #define SHN_HIPROC	0xff1f
565 #define SHN_LOOS	0xff20		/* Operating system specific range */
566 #define SHN_HIOS	0xff3f
567 
568 #define SHN_MIPS_ACOMMON 0xff00
569 #define SHN_MIPS_TEXT	0xff01
570 #define SHN_MIPS_DATA	0xff02
571 #define SHN_MIPS_SCOMMON 0xff03
572 
573 /*
574  * Relocation Entries
575  */
576 typedef struct {
577 	Elf32_Word	r_offset;	/* where to do it */
578 	Elf32_Word	r_info;		/* index & type of relocation */
579 } Elf32_Rel;
580 
581 typedef struct {
582 	Elf32_Word	r_offset;	/* where to do it */
583 	Elf32_Word	r_info;		/* index & type of relocation */
584 	Elf32_Sword	r_addend;	/* adjustment value */
585 } Elf32_Rela;
586 
587 /* r_info utility macros */
588 #define ELF32_R_SYM(info)	((info) >> 8)
589 #define ELF32_R_TYPE(info)	((info) & 0xff)
590 #define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
591 
592 typedef struct {
593 	Elf64_Addr	r_offset;	/* where to do it */
594 	Elf64_Xword	r_info;		/* index & type of relocation */
595 } Elf64_Rel;
596 
597 typedef struct {
598 	Elf64_Addr	r_offset;	/* where to do it */
599 	Elf64_Xword	r_info;		/* index & type of relocation */
600 	Elf64_Sxword	r_addend;	/* adjustment value */
601 } Elf64_Rela;
602 
603 /* r_info utility macros */
604 #define ELF64_R_SYM(info)	((info) >> 32)
605 #define ELF64_R_TYPE(info)	((info) & 0xffffffff)
606 #define ELF64_R_INFO(sym,type)	(((sym) << 32) + (type))
607 
608 /*
609  * Move entries
610  */
611 typedef struct {
612 	Elf32_Lword	m_value;	/* symbol value */
613 	Elf32_Word	m_info;		/* size + index */
614 	Elf32_Word	m_poffset;	/* symbol offset */
615 	Elf32_Half	m_repeat;	/* repeat count */
616 	Elf32_Half	m_stride;	/* stride info */
617 } Elf32_Move;
618 
619 #define ELF32_M_SYM(info)	((info) >> 8)
620 #define ELF32_M_SIZE(info)	((info) & 0xff)
621 #define ELF32_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size))
622 
623 typedef struct {
624 	Elf64_Lword	m_value;	/* symbol value */
625 	Elf64_Xword	m_info;		/* size + index */
626 	Elf64_Xword	m_poffset;	/* symbol offset */
627 	Elf64_Word	m_repeat;	/* repeat count */
628 	Elf64_Word	m_stride;	/* stride info */
629 } Elf64_Move;
630 
631 #define ELF64_M_SYM(info)	((info) >> 8)
632 #define ELF64_M_SIZE(info)	((info) & 0xff)
633 #define ELF64_M_INFO(sym, size) (((sym) << 8) + (unsigned char)(size))
634 
635 /*
636  * Hardware/software capabilities entry
637  */
638 typedef struct {
639 	Elf32_Word		c_tag;	/* entry tag value */
640 	union {
641 		Elf32_Addr	c_ptr;
642 		Elf32_Word	c_val;
643 	} c_un;
644 } Elf32_Cap;
645 
646 typedef struct {
647 	Elf64_Xword		c_tag;	/* entry tag value */
648 	union {
649 		Elf64_Addr	c_ptr;
650 		Elf64_Xword	c_val;
651 	} c_un;
652 } Elf64_Cap;
653 
654 /*
655  * Dynamic Section structure array
656  */
657 typedef struct {
658 	Elf32_Word		d_tag;	/* entry tag value */
659 	union {
660 		Elf32_Addr	d_ptr;
661 		Elf32_Word	d_val;
662 	} d_un;
663 } Elf32_Dyn;
664 
665 typedef struct {
666 	Elf64_Xword		d_tag;	/* entry tag value */
667 	union {
668 		Elf64_Addr	d_ptr;
669 		Elf64_Xword	d_val;
670 	} d_un;
671 } Elf64_Dyn;
672 
673 /* d_tag */
674 #define DT_NULL		0	/* Marks end of dynamic array */
675 #define DT_NEEDED	1	/* Name of needed library (DT_STRTAB offset) */
676 #define DT_PLTRELSZ	2	/* Size, in bytes, of relocations in PLT */
677 #define DT_PLTGOT	3	/* Address of PLT and/or GOT */
678 #define DT_HASH		4	/* Address of symbol hash table */
679 #define DT_STRTAB	5	/* Address of string table */
680 #define DT_SYMTAB	6	/* Address of symbol table */
681 #define DT_RELA		7	/* Address of Rela relocation table */
682 #define DT_RELASZ	8	/* Size, in bytes, of DT_RELA table */
683 #define DT_RELAENT	9	/* Size, in bytes, of one DT_RELA entry */
684 #define DT_STRSZ	10	/* Size, in bytes, of DT_STRTAB table */
685 #define DT_SYMENT	11	/* Size, in bytes, of one DT_SYMTAB entry */
686 #define DT_INIT		12	/* Address of initialization function */
687 #define DT_FINI		13	/* Address of termination function */
688 #define DT_SONAME	14	/* Shared object name (DT_STRTAB offset) */
689 #define DT_RPATH	15	/* Library search path (DT_STRTAB offset) */
690 #define DT_SYMBOLIC	16	/* Start symbol search within local object */
691 #define DT_REL		17	/* Address of Rel relocation table */
692 #define DT_RELSZ	18	/* Size, in bytes, of DT_REL table */
693 #define DT_RELENT	19	/* Size, in bytes, of one DT_REL entry */
694 #define DT_PLTREL	20	/* Type of PLT relocation entries */
695 #define DT_DEBUG	21	/* Used for debugging; unspecified */
696 #define DT_TEXTREL	22	/* Relocations might modify non-writable seg */
697 #define DT_JMPREL	23	/* Address of relocations associated with PLT */
698 #define DT_BIND_NOW	24	/* Process all relocations at load-time */
699 #define DT_INIT_ARRAY	25	/* Address of initialization function array */
700 #define DT_FINI_ARRAY	26	/* Size, in bytes, of DT_INIT_ARRAY array */
701 #define DT_INIT_ARRAYSZ 27	/* Address of termination function array */
702 #define DT_FINI_ARRAYSZ 28	/* Size, in bytes, of DT_FINI_ARRAY array*/
703 #define DT_RUNPATH	29	/* overrides DT_RPATH */
704 #define DT_FLAGS	30	/* Encodes ORIGIN, SYMBOLIC, TEXTREL, BIND_NOW, STATIC_TLS */
705 #define DT_ENCODING	31	/* ??? */
706 #define DT_PREINIT_ARRAY 32	/* Address of pre-init function array */
707 #define DT_PREINIT_ARRAYSZ 33	/* Size, in bytes, of DT_PREINIT_ARRAY array */
708 #define DT_NUM		34
709 
710 #define DT_LOOS		0x60000000	/* Operating system specific range */
711 #define DT_VERSYM	0x6ffffff0	/* Symbol versions */
712 #define DT_FLAGS_1	0x6ffffffb	/* ELF dynamic flags */
713 #define DT_VERDEF	0x6ffffffc	/* Versions defined by file */
714 #define DT_VERDEFNUM	0x6ffffffd	/* Number of versions defined by file */
715 #define DT_VERNEED	0x6ffffffe	/* Versions needed by file */
716 #define DT_VERNEEDNUM	0x6fffffff	/* Number of versions needed by file */
717 #define DT_HIOS		0x6fffffff
718 #define DT_LOPROC	0x70000000	/* Processor-specific range */
719 #define DT_HIPROC	0x7fffffff
720 
721 /* Flag values for DT_FLAGS */
722 #define DF_ORIGIN	0x00000001	/* uses $ORIGIN */
723 #define DF_SYMBOLIC	0x00000002	/* */
724 #define DF_TEXTREL	0x00000004	/* */
725 #define DF_BIND_NOW	0x00000008	/* */
726 #define DF_STATIC_TLS	0x00000010	/* */
727 
728 /* Flag values for DT_FLAGS_1 (incomplete) */
729 #define DF_1_BIND_NOW	0x00000001	/* Same as DF_BIND_NOW */
730 #define DF_1_NODELETE	0x00000008	/* Set the RTLD_NODELETE for object */
731 #define DF_1_INITFIRST	0x00000020	/* Object's init/fini take priority */
732 #define DF_1_NOOPEN	0x00000040	/* Do not allow loading on dlopen() */
733 
734 /*
735  * Auxiliary Vectors
736  */
737 typedef struct {
738 	Elf32_Word	a_type;				/* 32-bit id */
739 	Elf32_Word	a_v;				/* 32-bit id */
740 } Aux32Info;
741 
742 typedef struct {
743 	Elf64_Word	a_type;		/* 32-bit id */
744 	Elf64_Xword	a_v;		/* 64-bit id */
745 } Aux64Info;
746 
747 /* a_type */
748 #define AT_NULL		0	/* Marks end of array */
749 #define AT_IGNORE	1	/* No meaning, a_un is undefined */
750 #define AT_EXECFD	2	/* Open file descriptor of object file */
751 #define AT_PHDR		3	/* &phdr[0] */
752 #define AT_PHENT	4	/* sizeof(phdr[0]) */
753 #define AT_PHNUM	5	/* # phdr entries */
754 #define AT_PAGESZ	6	/* PAGESIZE */
755 #define AT_BASE		7	/* Interpreter base addr */
756 #define AT_FLAGS	8	/* Processor flags */
757 #define AT_ENTRY	9	/* Entry address of executable */
758 #define AT_DCACHEBSIZE	10	/* Data cache block size */
759 #define AT_ICACHEBSIZE	11	/* Instruction cache block size */
760 #define AT_UCACHEBSIZE	12	/* Unified cache block size */
761 #define AT_STACKBASE	13	/* Base address of the main thread */
762 
763 	/* Vendor specific */
764 #define AT_MIPS_NOTELF	10	/* XXX a_val != 0 -> MIPS XCOFF executable */
765 
766 #define AT_EUID		2000	/* euid (solaris compatible numbers) */
767 #define AT_RUID		2001	/* ruid (solaris compatible numbers) */
768 #define AT_EGID		2002	/* egid (solaris compatible numbers) */
769 #define AT_RGID		2003	/* rgid (solaris compatible numbers) */
770 
771 	/* Solaris kernel specific */
772 #define AT_SUN_LDELF	2004	/* dynamic linker's ELF header */
773 #define AT_SUN_LDSHDR	2005	/* dynamic linker's section header */
774 #define AT_SUN_LDNAME	2006	/* dynamic linker's name */
775 #define AT_SUN_LPGSIZE	2007	/* large pagesize */
776 
777 	/* Other information */
778 #define AT_SUN_PLATFORM 2008	/* sysinfo(SI_PLATFORM) */
779 #define AT_SUN_HWCAP	2009	/* process hardware capabilities */
780 #define AT_SUN_IFLUSH	2010	/* do we need to flush the instruction cache? */
781 #define AT_SUN_CPU	2011	/* CPU name */
782 	/* ibcs2 emulation band aid */
783 #define AT_SUN_EMUL_ENTRY 2012	/* coff entry point */
784 #define AT_SUN_EMUL_EXECFD 2013 /* coff file descriptor */
785 	/* Executable's fully resolved name */
786 #define AT_SUN_EXECNAME 2014
787 
788 /*
789  * The header for GNU-style hash sections.
790  */
791 typedef struct {
792 	uint32_t	gh_nbuckets;	/* Number of hash buckets. */
793 	uint32_t	gh_symndx;	/* First visible symbol in .dynsym. */
794 	uint32_t	gh_maskwords;	/* #maskwords used in bloom filter. */
795 	uint32_t	gh_shift2;	/* Bloom filter shift count. */
796 } Elf_GNU_Hash_Header;
797 
798 /*
799  * Note Headers
800  */
801 typedef struct {
802 	Elf32_Word n_namesz;
803 	Elf32_Word n_descsz;
804 	Elf32_Word n_type;
805 } Elf32_Nhdr;
806 
807 typedef struct {
808 	Elf64_Word n_namesz;
809 	Elf64_Word n_descsz;
810 	Elf64_Word n_type;
811 } Elf64_Nhdr;
812 
813 #define ELF_NOTE_GNU_NAMESZ		4
814 #define ELF_NOTE_GNU_NAME		"GNU\0"
815 
816 /*
817  * GNU-specific note type: ABI tag
818  * name: GNU\0
819  * namesz: 4
820  * desc:
821  *	word[0]: OS tag
822  *	word[1]: major version
823  *	word[2]: minor version
824  *	word[3]: teeny version
825  * descsz: 16
826  */
827 /* GNU-specific note name and description sizes */
828 #define ELF_NOTE_TYPE_ABI_TAG		1
829 #define ELF_NOTE_ABI_NAME		ELF_NOTE_GNU_NAME
830 #define ELF_NOTE_ABI_NAMESZ		ELF_NOTE_GNU_NAMESZ
831 #define ELF_NOTE_ABI_DESCSZ		16
832 /* GNU-specific OS/version value stuff */
833 #define ELF_NOTE_ABI_OS_LINUX		0
834 #define ELF_NOTE_ABI_OS_HURD		1
835 #define ELF_NOTE_ABI_OS_SOLARIS		2
836 #define ELF_NOTE_ABI_OS_KFREEBSD	3
837 #define ELF_NOTE_ABI_OS_KNETBSD		4
838 
839 /*
840  * GNU-specific note type: Hardware capabilities
841  * name: GNU\0
842  * namesz: 4
843  * desc:
844  *	word[0]: Number of entries
845  *	word[1]: Bitmask of enabled entries
846  *	Followed by a byte id, and a NUL terminated string per entry
847  * descsz: variable
848  */
849 #define ELF_NOTE_TYPE_GNU_HWCAP		2
850 
851 /*
852  * GNU-specific note type: Build ID generated by ld
853  * name: GNU\0
854  * desc:
855  *	word[0..4] SHA1 [default]
856  * or
857  *	word[0..3] md5 or uuid
858  * descsz: 16 or 20
859  */
860 #define ELF_NOTE_TYPE_GNU_BUILD_ID	3
861 
862 /* SuSE-specific note type: ABI
863  * name: SuSE\0
864  * namesz: 5
865  * desc:
866  *	half[0] = MMmm
867  *
868  *	M = product major version
869  *	m = product minor version
870  * descsz: 2
871  */
872 #define ELF_NOTE_TYPE_SUSE_TAG	1
873 /* SuSE-specific note name and description sizes */
874 #define ELF_NOTE_SUSE_NAMESZ	5
875 #define ELF_NOTE_SUSE_DESCSZ	2
876 /* SuSE-specific note name */
877 #define ELF_NOTE_SUSE_NAME		"SuSE\0"
878 
879 /* SuSE-specific note type: version
880  * name: SuSE\0\0\0\0
881  * namesz: 8
882  * desc:
883  *	word[0] = VVTTMMmm
884  *
885  *	V = version of following data
886  *	T = product type: [box, sles, nld, whatever]
887  *	M = product major version
888  *	m = product minor version
889  * descsz: 8
890  */
891 #define ELF_NOTE_TYPE_SUSE_VERSION_TAG	0x45537553	/* SuSE in LE */
892 /* SuSE-specific note name and description sizes */
893 #define ELF_NOTE_SUSE_VERSION_NAMESZ	8
894 #define ELF_NOTE_SUSE_VERSION_DESCSZ	8
895 /* SuSE-specific note name */
896 #define ELF_NOTE_SUSE_VERSION_NAME		"SuSE\0\0\0\0"
897 
898 /* NetBSD-specific note type: Emulation name.
899  * name: NetBSD\0\0
900  * namesz: 8
901  * desc:
902  *	word[0]: MMmmrrpp00
903  *
904  *	M = major version
905  *	m = minor version
906  *	r = release ["",A-Z,Z[A-Z] but numeric]
907  *	p = patchlevel
908  * descsz: 4
909  */
910 #define ELF_NOTE_TYPE_NETBSD_TAG	1
911 #if defined(__minix)
912 /* NetBSD-specific note name and description sizes */
913 #define ELF_NOTE_NETBSD_NAMESZ		7
914 #define ELF_NOTE_NETBSD_DESCSZ		4
915 /* NetBSD-specific note name */
916 #define ELF_NOTE_NETBSD_NAME		"NetBSD\0\0"
917 #else
918 /* MINIX3-specific note name and description sizes */
919 #define ELF_NOTE_NETBSD_NAMESZ		6
920 #define ELF_NOTE_NETBSD_DESCSZ		4
921 #define ELF_NOTE_NETBSD_NAME		"Minix\0\0\0"
922 #endif /* defined(__minix) */
923 
924 /* NetBSD-specific note type: Checksum.
925  * There should be 1 NOTE per PT_LOAD section.
926  * name: ???
927  * namesz: ???
928  * desc:
929  *	a tuple of <phnum>(16),<chk-type>(16),<chk-value>.
930  * descsz: ???
931  */
932 #define ELF_NOTE_TYPE_CHECKSUM_TAG	2
933 #define ELF_NOTE_CHECKSUM_CRC32		1
934 #define ELF_NOTE_CHECKSUM_MD5		2
935 #define ELF_NOTE_CHECKSUM_SHA1		3
936 #define ELF_NOTE_CHECKSUM_SHA256	4
937 
938 /*
939  * NetBSD-specific note type: PaX.
940  * There should be 1 NOTE per executable.
941  * name: PaX\0
942  * namesz: 4
943  * desc:
944  *	word[0]: capability bitmask
945  * descsz: 4
946  */
947 #define ELF_NOTE_TYPE_PAX_TAG		3
948 #define ELF_NOTE_PAX_MPROTECT		0x01	/* Force enable Mprotect */
949 #define ELF_NOTE_PAX_NOMPROTECT		0x02	/* Force disable Mprotect */
950 #define ELF_NOTE_PAX_GUARD		0x04	/* Force enable Segvguard */
951 #define ELF_NOTE_PAX_NOGUARD		0x08	/* Force disable Segvguard */
952 #define ELF_NOTE_PAX_ASLR		0x10	/* Force enable ASLR */
953 #define ELF_NOTE_PAX_NOASLR		0x20	/* Force disable ASLR */
954 #define ELF_NOTE_PAX_NAMESZ		4
955 #define ELF_NOTE_PAX_NAME		"PaX\0"
956 #define ELF_NOTE_PAX_DESCSZ		4
957 
958 /*
959  * NetBSD-specific core file information.
960  *
961  * NetBSD ELF core files use notes to provide information about
962  * the process's state.	 The note name is "NetBSD-CORE" for
963  * information that is global to the process, and "NetBSD-CORE@nn",
964  * where "nn" is the lwpid of the LWP that the information belongs
965  * to (such as register state).
966  *
967  * We use the following note identifiers:
968  *
969  *	ELF_NOTE_NETBSD_CORE_PROCINFO
970  *		Note is a "netbsd_elfcore_procinfo" structure.
971  *
972  * We also use ptrace(2) request numbers (the ones that exist in
973  * machine-dependent space) to identify register info notes.  The
974  * info in such notes is in the same format that ptrace(2) would
975  * export that information.
976  *
977  * Please try to keep the members of this structure nicely aligned,
978  * and if you add elements, add them to the end and bump the version.
979  */
980 
981 #define ELF_NOTE_NETBSD_CORE_NAME	"NetBSD-CORE"
982 
983 #define ELF_NOTE_NETBSD_CORE_PROCINFO	1
984 
985 #define NETBSD_ELFCORE_PROCINFO_VERSION 1
986 
987 struct netbsd_elfcore_procinfo {
988 	/* Version 1 fields start here. */
989 	uint32_t	cpi_version;		/* our version */
990 	uint32_t	cpi_cpisize;		/* sizeof(this struct) */
991 	uint32_t	cpi_signo;		/* killing signal */
992 	uint32_t	cpi_sigcode;		/* signal code */
993 	uint32_t	cpi_sigpend[4];		/* pending signals */
994 	uint32_t	cpi_sigmask[4];		/* blocked signals */
995 	uint32_t	cpi_sigignore[4];	/* ignored signals */
996 	uint32_t	cpi_sigcatch[4];	/* caught signals */
997 	int32_t		cpi_pid;		/* process ID */
998 	int32_t		cpi_ppid;		/* parent process ID */
999 	int32_t		cpi_pgrp;		/* process group ID */
1000 	int32_t		cpi_sid;		/* session ID */
1001 	uint32_t	cpi_ruid;		/* real user ID */
1002 	uint32_t	cpi_euid;		/* effective user ID */
1003 	uint32_t	cpi_svuid;		/* saved user ID */
1004 	uint32_t	cpi_rgid;		/* real group ID */
1005 	uint32_t	cpi_egid;		/* effective group ID */
1006 	uint32_t	cpi_svgid;		/* saved group ID */
1007 	uint32_t	cpi_nlwps;		/* number of LWPs */
1008 	int8_t		cpi_name[32];		/* copy of p->p_comm */
1009 	/* Add version 2 fields below here. */
1010 	int32_t		cpi_siglwp;	/* LWP target of killing signal */
1011 };
1012 
1013 /*
1014  * NetBSD-specific note type: MACHINE_ARCH.
1015  * There should be 1 NOTE per executable.
1016  * name:	NetBSD\0
1017  * namesz:	7
1018  * desc:	string
1019  * descsz:	variable
1020  */
1021 #define ELF_NOTE_TYPE_MARCH_TAG		5
1022 /* NetBSD-specific note name and description sizes */
1023 #define ELF_NOTE_MARCH_NAMESZ		ELF_NOTE_NETBSD_NAMESZ
1024 /* NetBSD-specific note name */
1025 #define ELF_NOTE_MARCH_NAME		ELF_NOTE_NETBSD_NAME
1026 
1027 /*
1028  * NetBSD-specific note type: MCMODEL
1029  * There should be 1 NOTE per executable.
1030  * name:	NetBSD\0
1031  * namesz:	7
1032  * code model:	string
1033  */
1034 
1035 #define ELF_NOTE_TYPE_MCMODEL_TAG	6
1036 /* NetBSD-specific note name and description sizes */
1037 #define ELF_NOTE_MCMODEL_NAMESZ		ELF_NOTE_NETBSD_NAMESZ
1038 /* NetBSD-specific note name */
1039 #define ELF_NOTE_MCMODEL_NAME		ELF_NOTE_NETBSD_NAME
1040 
1041 
1042 #if !defined(ELFSIZE) && defined(ARCH_ELFSIZE)
1043 #define ELFSIZE ARCH_ELFSIZE
1044 #endif
1045 
1046 #if defined(ELFSIZE)
1047 #define CONCAT(x,y)	__CONCAT(x,y)
1048 #define ELFNAME(x)	CONCAT(elf,CONCAT(ELFSIZE,CONCAT(_,x)))
1049 #define ELFNAME2(x,y)	CONCAT(x,CONCAT(_elf,CONCAT(ELFSIZE,CONCAT(_,y))))
1050 #define ELFNAMEEND(x)	CONCAT(x,CONCAT(_elf,ELFSIZE))
1051 #define ELFDEFNNAME(x)	CONCAT(ELF,CONCAT(ELFSIZE,CONCAT(_,x)))
1052 #endif
1053 
1054 #if defined(ELFSIZE) && (ELFSIZE == 32)
1055 #define Elf_Ehdr	Elf32_Ehdr
1056 #define Elf_Phdr	Elf32_Phdr
1057 #define Elf_Shdr	Elf32_Shdr
1058 #define Elf_Sym		Elf32_Sym
1059 #define Elf_Rel		Elf32_Rel
1060 #define Elf_Rela	Elf32_Rela
1061 #define Elf_Dyn		Elf32_Dyn
1062 #define Elf_Word	Elf32_Word
1063 #define Elf_Sword	Elf32_Sword
1064 #define Elf_Half	Elf32_Half
1065 #define Elf_Addr	Elf32_Addr
1066 #define Elf_Off		Elf32_Off
1067 #define Elf_SOff	Elf32_SOff
1068 #define Elf_Nhdr	Elf32_Nhdr
1069 #define Elf_Verdef	Elf32_Verdef
1070 #define Elf_Verdaux	Elf32_Verdaux
1071 #define Elf_Verneed	Elf32_Verneed
1072 #define Elf_Vernaux	Elf32_Vernaux
1073 #define Elf_Versym	Elf32_Versym
1074 
1075 #define ELF_R_SYM	ELF32_R_SYM
1076 #define ELF_R_TYPE	ELF32_R_TYPE
1077 #define ELFCLASS	ELFCLASS32
1078 
1079 #define AuxInfo		Aux32Info
1080 #elif defined(ELFSIZE) && (ELFSIZE == 64)
1081 #define Elf_Ehdr	Elf64_Ehdr
1082 #define Elf_Phdr	Elf64_Phdr
1083 #define Elf_Shdr	Elf64_Shdr
1084 #define Elf_Sym		Elf64_Sym
1085 #define Elf_Rel		Elf64_Rel
1086 #define Elf_Rela	Elf64_Rela
1087 #define Elf_Dyn		Elf64_Dyn
1088 #define Elf_Word	Elf64_Word
1089 #define Elf_Sword	Elf64_Sword
1090 #define Elf_Half	Elf64_Half
1091 #define Elf_Addr	Elf64_Addr
1092 #define Elf_Off		Elf64_Off
1093 #define Elf_SOff	Elf64_SOff
1094 #define Elf_Nhdr	Elf64_Nhdr
1095 #define Elf_Verdef	Elf64_Verdef
1096 #define Elf_Verdaux	Elf64_Verdaux
1097 #define Elf_Verneed	Elf64_Verneed
1098 #define Elf_Vernaux	Elf64_Vernaux
1099 #define Elf_Versym	Elf64_Versym
1100 
1101 #define ELF_R_SYM	ELF64_R_SYM
1102 #define ELF_R_TYPE	ELF64_R_TYPE
1103 #define ELFCLASS	ELFCLASS64
1104 
1105 #define AuxInfo		Aux64Info
1106 #endif
1107 
1108 #ifndef Elf_Symindx
1109 #define Elf_Symindx	uint32_t
1110 #endif
1111 
1112 #define ELF32_ST_BIND(info)		ELF_ST_BIND(info)
1113 #define ELF32_ST_TYPE(info)		ELF_ST_TYPE(info)
1114 #define ELF32_ST_INFO(bind,type)	ELF_ST_INFO(bind,type)
1115 #define ELF32_ST_VISIBILITY(other)	ELF_ST_VISIBILITY(other)
1116 
1117 #define ELF64_ST_BIND(info)		ELF_ST_BIND(info)
1118 #define ELF64_ST_TYPE(info)		ELF_ST_TYPE(info)
1119 #define ELF64_ST_INFO(bind,type)	ELF_ST_INFO(bind,type)
1120 #define ELF64_ST_VISIBILITY(other)	ELF_ST_VISIBILITY(other)
1121 
1122 typedef struct {
1123 	Elf32_Half	si_boundto;	/* direct bindings - symbol bound to */
1124 	Elf32_Half	si_flags;	/* per symbol flags */
1125 } Elf32_Syminfo;
1126 
1127 typedef struct {
1128 	Elf64_Word	si_boundto;	/* direct bindings - symbol bound to */
1129 	Elf64_Word	si_flags;	/* per symbol flags */
1130 } Elf64_Syminfo;
1131 
1132 #define SYMINFO_FLG_DIRECT	0x0001	/* symbol ref has direct association
1133 					   to object containing definition */
1134 #define SYMINFO_FLG_PASSTHRU	0x0002	/* ignored - see SYMINFO_FLG_FILTER */
1135 #define SYMINFO_FLG_COPY	0x0004	/* symbol is a copy-reloc */
1136 #define SYMINFO_FLG_LAZYLOAD	0x0008	/* object containing defn should be
1137 					   lazily-loaded */
1138 #define SYMINFO_FLG_DIRECTBIND	0x0010	/* ref should be bound directly to
1139 					   object containing definition */
1140 #define SYMINFO_FLG_NOEXTDIRECT 0x0020	/* don't let an external reference
1141 					   directly bind to this symbol */
1142 #define SYMINFO_FLG_FILTER	0x0002	/* symbol ref is associated to a */
1143 #define SYMINFO_FLG_AUXILIARY	0x0040	/*	standard or auxiliary filter */
1144 
1145 #define SYMINFO_BT_SELF		0xffff	/* symbol bound to self */
1146 #define SYMINFO_BT_PARENT	0xfffe	/* symbol bound to parent */
1147 #define SYMINFO_BT_NONE		0xfffd	/* no special symbol binding */
1148 #define SYMINFO_BT_EXTERN	0xfffc	/* symbol defined as external */
1149 #define SYMINFO_BT_LOWRESERVE	0xff00	/* beginning of reserved entries */
1150 
1151 #define SYMINFO_NONE		0	/* Syminfo version */
1152 #define SYMINFO_CURRENT		1
1153 #define SYMINFO_NUM		2
1154 
1155 /*
1156  * These constants are used for Elf32_Verdef struct's version number.
1157  */
1158 #define VER_DEF_NONE		0
1159 #define VER_DEF_CURRENT		1
1160 
1161 /*
1162  * These constants are used for Elf32_Verdef struct's vd_ndx.
1163  */
1164 #define VER_DEF_IDX(x)		VER_NDX(x)
1165 
1166 /*
1167  * These constants are used for Elf32_Verdef struct's vd_flags.
1168  */
1169 #define VER_FLG_BASE		0x1
1170 #define VER_FLG_WEAK		0x2
1171 
1172 /*
1173  * These are used in an Elf32_Versym field.
1174  */
1175 #define VER_NDX_LOCAL		0
1176 #define VER_NDX_GLOBAL		1
1177 #define VER_NDX_GIVEN		2
1178 
1179 /*
1180  * These constants are used for Elf32_Verneed struct's version number.
1181  */
1182 #define VER_NEED_NONE		0
1183 #define VER_NEED_CURRENT	1
1184 
1185 /*
1186  * These constants are used for Elf32_Vernaux struct's vna_other.
1187  */
1188 #define VER_NEED_HIDDEN		VER_NDX_HIDDEN
1189 #define VER_NEED_IDX(x)		VER_NDX(x)
1190 
1191 /* index */
1192 #define VER_NDX_HIDDEN		0x8000
1193 #define VER_NDX(x)		((x) & ~VER_NDX_HIDDEN)
1194 
1195 /*
1196  * GNU Extension hidding symbol
1197  */
1198 #define VERSYM_HIDDEN		0x8000
1199 #define VERSYM_VERSION		0x7fff
1200 
1201 #define ELF_VER_CHR		'@'
1202 
1203 /*
1204  * These are current size independent.
1205  */
1206 
1207 typedef struct {
1208 	Elf32_Half	vd_version;	/* version number of structure */
1209 	Elf32_Half	vd_flags;	/* flags (VER_FLG_*) */
1210 	Elf32_Half	vd_ndx;		/* version index */
1211 	Elf32_Half	vd_cnt;		/* number of verdaux entries */
1212 	Elf32_Word	vd_hash;	/* hash of name */
1213 	Elf32_Word	vd_aux;		/* offset to verdaux entries */
1214 	Elf32_Word	vd_next;	/* offset to next verdef */
1215 } Elf32_Verdef;
1216 typedef Elf32_Verdef	Elf64_Verdef;
1217 
1218 typedef struct {
1219 	Elf32_Word	vda_name;	/* string table offset of name */
1220 	Elf32_Word	vda_next;	/* offset to verdaux */
1221 } Elf32_Verdaux;
1222 typedef Elf32_Verdaux	Elf64_Verdaux;
1223 
1224 typedef struct {
1225 	Elf32_Half	vn_version;	/* version number of structure */
1226 	Elf32_Half	vn_cnt;		/* number of vernaux entries */
1227 	Elf32_Word	vn_file;	/* string table offset of library name*/
1228 	Elf32_Word	vn_aux;		/* offset to vernaux entries */
1229 	Elf32_Word	vn_next;	/* offset to next verneed */
1230 } Elf32_Verneed;
1231 typedef Elf32_Verneed	Elf64_Verneed;
1232 
1233 typedef struct {
1234 	Elf32_Word	vna_hash;	/* Hash of dependency name */
1235 	Elf32_Half	vna_flags;	/* flags (VER_FLG_*) */
1236 	Elf32_Half	vna_other;	/* unused */
1237 	Elf32_Word	vna_name;	/* string table offset to version name*/
1238 	Elf32_Word	vna_next;	/* offset to next vernaux */
1239 } Elf32_Vernaux;
1240 typedef Elf32_Vernaux	Elf64_Vernaux;
1241 
1242 typedef struct {
1243 	Elf32_Half	vs_vers;
1244 } Elf32_Versym;
1245 typedef Elf32_Versym	Elf64_Versym;
1246 
1247 #ifdef _KERNEL
1248 
1249 /*
1250  * Arbitrary limits to avoid DoS for excessive memory allocation.
1251  */
1252 #define ELF_MAXPHNUM	128
1253 #define ELF_MAXSHNUM	32768
1254 #define ELF_MAXNOTESIZE	1024
1255 
1256 #define ELF_AUX_ENTRIES 15	/* Max size of aux array passed to loader */
1257 #define ELF32_NO_ADDR	(~(Elf32_Addr)0) /* Indicates addr. not yet filled in */
1258 #define ELF32_LINK_ADDR ((Elf32_Addr)-2) /* advises to use link address */
1259 #define ELF64_NO_ADDR	(~(Elf64_Addr)0) /* Indicates addr. not yet filled in */
1260 #define ELF64_LINK_ADDR ((Elf64_Addr)-2) /* advises to use link address */
1261 
1262 #if defined(ELFSIZE) && (ELFSIZE == 64)
1263 #define ELF_NO_ADDR	ELF64_NO_ADDR
1264 #define ELF_LINK_ADDR	ELF64_LINK_ADDR
1265 #elif defined(ELFSIZE) && (ELFSIZE == 32)
1266 #define ELF_NO_ADDR	ELF32_NO_ADDR
1267 #define ELF_LINK_ADDR	ELF32_LINK_ADDR
1268 #endif
1269 
1270 #ifndef ELF32_EHDR_FLAGS_OK
1271 #define ELF32_EHDR_FLAGS_OK(eh) 1
1272 #endif
1273 
1274 #ifndef ELF64_EHDR_FLAGS_OK
1275 #define ELF64_EHDR_FLAGS_OK(eh) 1
1276 #endif
1277 
1278 #if defined(ELFSIZE) && (ELFSIZE == 64)
1279 #define ELF_EHDR_FLAGS_OK(eh)	ELF64_EHDR_FLAGS_OK(eh)
1280 #else
1281 #define ELF_EHDR_FLAGS_OK(eh)	ELF32_EHDR_FLAGS_OK(eh)
1282 #endif
1283 
1284 #if defined(ELFSIZE)
1285 struct elf_args {
1286 	Elf_Addr	arg_entry;	/* program entry point */
1287 	Elf_Addr	arg_interp;	/* Interpreter load address */
1288 	Elf_Addr	arg_phaddr;	/* program header address */
1289 	Elf_Addr	arg_phentsize;	/* Size of program header */
1290 	Elf_Addr	arg_phnum;	/* Number of program headers */
1291 };
1292 #endif
1293 
1294 #ifdef _KERNEL_OPT
1295 #include "opt_execfmt.h"
1296 #endif
1297 
1298 struct ps_strings;
1299 struct coredump_iostate;
1300 struct note_state;
1301 struct exec_package;
1302 
1303 #ifdef EXEC_ELF32
1304 int	exec_elf32_makecmds(struct lwp *, struct exec_package *);
1305 int	elf32_copyargs(struct lwp *, struct exec_package *,
1306     struct ps_strings *, char **, void *);
1307 
1308 int	coredump_elf32(struct lwp *, struct coredump_iostate *);
1309 void	coredump_savenote_elf32(struct note_state *, unsigned int,
1310 	    const char *, void *, size_t);
1311 
1312 int	elf32_check_header(Elf32_Ehdr *);
1313 #endif
1314 
1315 #ifdef EXEC_ELF64
1316 int	exec_elf64_makecmds(struct lwp *, struct exec_package *);
1317 int	elf64_copyargs(struct lwp *, struct exec_package *,
1318     struct ps_strings *, char **, void *);
1319 
1320 int	coredump_elf64(struct lwp *, struct coredump_iostate *);
1321 void	coredump_savenote_elf64(struct note_state *, unsigned int,
1322 	    const char *, void *, size_t);
1323 
1324 int	elf64_check_header(Elf64_Ehdr *);
1325 #endif
1326 
1327 #endif /* _KERNEL */
1328 
1329 #endif /* !_SYS_EXEC_ELF_H_ */
1330