1/*
2 * Copyright 2002-2016 Haiku, Inc. All rights reserved.
3 * Distributed under the terms of the MIT License.
4 */
5#ifndef _ELF_H
6#define _ELF_H
7
8
9#include <SupportDefs.h>
10#include <ByteOrder.h>
11
12
13typedef uint32 Elf32_Addr;
14typedef uint16 Elf32_Half;
15typedef uint32 Elf32_Off;
16typedef int32 Elf32_Sword;
17typedef uint32 Elf32_Word;
18
19typedef Elf32_Half Elf32_Versym;
20
21typedef uint64 Elf64_Addr;
22typedef uint64 Elf64_Off;
23typedef uint16 Elf64_Half;
24typedef uint32 Elf64_Word;
25typedef int32 Elf64_Sword;
26typedef uint64 Elf64_Xword;
27typedef int64 Elf64_Sxword;
28
29typedef Elf64_Half Elf64_Versym;
30
31
32/*** ELF header ***/
33
34#define EI_NIDENT	16
35
36typedef struct {
37	uint8		e_ident[EI_NIDENT];
38	Elf32_Half	e_type;
39	Elf32_Half	e_machine;
40	Elf32_Word	e_version;
41	Elf32_Addr	e_entry;
42	Elf32_Off	e_phoff;
43	Elf32_Off	e_shoff;
44	Elf32_Word	e_flags;
45	Elf32_Half	e_ehsize;
46	Elf32_Half	e_phentsize;
47	Elf32_Half	e_phnum;
48	Elf32_Half	e_shentsize;
49	Elf32_Half	e_shnum;
50	Elf32_Half	e_shstrndx;
51
52#ifdef __cplusplus
53	bool IsHostEndian() const;
54#endif
55} Elf32_Ehdr;
56
57typedef struct {
58	uint8		e_ident[EI_NIDENT];
59	Elf64_Half	e_type;
60	Elf64_Half	e_machine;
61	Elf64_Word	e_version;
62	Elf64_Addr	e_entry;
63	Elf64_Off	e_phoff;
64	Elf64_Off	e_shoff;
65	Elf64_Word	e_flags;
66	Elf64_Half	e_ehsize;
67	Elf64_Half	e_phentsize;
68	Elf64_Half	e_phnum;
69	Elf64_Half	e_shentsize;
70	Elf64_Half	e_shnum;
71	Elf64_Half	e_shstrndx;
72
73#ifdef __cplusplus
74	bool IsHostEndian() const;
75#endif
76} Elf64_Ehdr;
77
78/* e_ident[] indices */
79#define EI_MAG0		0
80#define EI_MAG1		1
81#define EI_MAG2		2
82#define EI_MAG3		3
83#define EI_CLASS	4
84#define EI_DATA		5
85#define EI_VERSION	6
86#define EI_PAD		7
87
88/* Values for the magic number bytes. */
89#define ELFMAG0		0x7f
90#define ELFMAG1		'E'
91#define ELFMAG2		'L'
92#define ELFMAG3		'F'
93#define ELFMAG		"\x7f""ELF"
94#define SELFMAG		4
95
96/* e_ident */
97#define IS_ELF(ehdr)    ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
98	(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
99	(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
100	(ehdr).e_ident[EI_MAG3] == ELFMAG3)
101
102/* e_type (Object file type) */
103#define ET_NONE			0 /* No file type */
104#define ET_REL			1 /* Relocatable file */
105#define ET_EXEC			2 /* Executable file */
106#define ET_DYN			3 /* Shared-object file */
107#define ET_CORE			4 /* Core file */
108#define ET_LOOS			0xfe00 /* OS-specific range start */
109#define ET_HIOS			0xfeff /* OS-specific range end */
110#define ET_LOPROC		0xff00 /* Processor-specific range start */
111#define ET_HIPROC		0xffff /* Processor-specific range end */
112
113/* e_machine (Architecture) */
114#define EM_NONE			0 /* No machine */
115#define EM_M32			1 /* AT&T WE 32100 */
116#define EM_SPARC		2 /* Sparc */
117#define EM_386			3 /* Intel 80386 */
118#define EM_68K			4 /* Motorola m68k family */
119#define EM_88K			5 /* Motorola m88k family */
120#define EM_486			6 /* Intel 80486, Reserved for future use */
121#define EM_860			7 /* Intel 80860 */
122#define EM_MIPS			8 /* MIPS R3000 (officially, big-endian only) */
123#define EM_S370			9 /* IBM System/370 */
124#define EM_MIPS_RS3_LE	10 /* MIPS R3000 little-endian, Deprecated */
125#define EM_PARISC		15 /* HPPA */
126#define EM_VPP550		17 /* Fujitsu VPP500 */
127#define EM_SPARC32PLUS	18 /* Sun "v8plus" */
128#define EM_960			19 /* Intel 80960 */
129#define EM_PPC			20 /* PowerPC */
130#define EM_PPC64		21 /* 64-bit PowerPC */
131#define EM_S390			22 /* IBM S/390 */
132#define EM_V800			36 /* NEC V800 series */
133#define EM_FR20			37 /* Fujitsu FR20 */
134#define EM_RH32			38 /* TRW RH32 */
135#define EM_MCORE		39 /* Motorola M*Core */
136#define EM_RCE			39 /* Old name for MCore */
137#define EM_ARM			40 /* ARM */
138#define EM_OLD_ALPHA	41 /* Digital Alpha */
139#define EM_SH			42 /* Renesas / SuperH SH */
140#define EM_SPARCV9		43 /* SPARC v9 64-bit */
141#define EM_TRICORE		44 /* Siemens Tricore embedded processor */
142#define EM_ARC			45 /* ARC Cores */
143#define EM_H8_300		46 /* Renesas H8/300 */
144#define EM_H8_300H		47 /* Renesas H8/300H */
145#define EM_H8S			48 /* Renesas H8S */
146#define EM_H8_500		49 /* Renesas H8/500 */
147#define EM_IA_64		50 /* Intel IA-64 Processor */
148#define EM_MIPS_X		51 /* Stanford MIPS-X */
149#define EM_COLDFIRE		52 /* Motorola Coldfire */
150#define EM_68HC12		53 /* Motorola M68HC12 */
151#define EM_MMA			54 /* Fujitsu Multimedia Accelerator */
152#define EM_PCP			55 /* Siemens PCP */
153#define EM_NCPU			56 /* Sony nCPU embedded RISC processor */
154#define EM_NDR1			57 /* Denso NDR1 microprocesspr */
155#define EM_STARCORE		58 /* Motorola Star*Core processor */
156#define EM_ME16			59 /* Toyota ME16 processor */
157#define EM_ST100		60 /* STMicroelectronics ST100 processor */
158#define EM_TINYJ		61 /* Advanced Logic Corp. TinyJ embedded processor */
159#define EM_X86_64		62 /* Advanced Micro Devices X86-64 processor */
160#define EM_PDSP			63 /* Sony DSP Processor */
161#define EM_FX66			66 /* Siemens FX66 microcontroller */
162#define EM_ST9PLUS		67 /* STMicroelectronics ST9+ 8/16 mc */
163#define EM_ST7			68 /* STmicroelectronics ST7 8 bit mc */
164#define EM_68HC16		69 /* Motorola MC68HC16 microcontroller */
165#define EM_68HC11		70 /* Motorola MC68HC11 microcontroller */
166#define EM_68HC08		71 /* Motorola MC68HC08 microcontroller */
167#define EM_68HC05		72 /* Motorola MC68HC05 microcontroller */
168#define EM_SVX			73 /* Silicon Graphics SVx */
169#define EM_ST19			74 /* STMicroelectronics ST19 8 bit mc */
170#define EM_VAX			75 /* Digital VAX */
171#define EM_CRIS			76 /* Axis Communications 32-bit embedded processor */
172#define EM_JAVELIN		77 /* Infineon Technologies 32-bit embedded processor */
173#define EM_FIREPATH		78 /* Element 14 64-bit DSP Processor */
174#define EM_ZSP			79 /* LSI Logic 16-bit DSP Processor */
175#define EM_MMIX			80 /* Donald Knuth's educational 64-bit processor */
176#define EM_HUANY		81 /* Harvard University machine-independent object files */
177#define EM_PRISM		82 /* SiTera Prism */
178#define EM_AVR			83 /* Atmel AVR 8-bit microcontroller */
179#define EM_FR30			84 /* Fujitsu FR30 */
180#define EM_D10V			85 /* Mitsubishi D10V */
181#define EM_D30V			86 /* Mitsubishi D30V */
182#define EM_V850			87 /* NEC v850 */
183#define EM_M32R			88 /* Mitsubishi M32R */
184#define EM_MN10300		89 /* Matsushita MN10300 */
185#define EM_MN10200		90 /* Matsushita MN10200 */
186#define EM_PJ			91 /* picoJava */
187#define EM_OPENRISC		92 /* OpenRISC 32-bit embedded processor */
188#define EM_ARC_A5		93 /* ARC Cores Tangent-A5 */
189#define EM_XTENSA		94 /* Tensilica Xtensa Architecture */
190#define EM_VIDCORE		95 /* Alphamosaic VideoCore */
191#define EM_CR			103 /* Nat. Semi. CompactRISC microprocessor */
192#define EM_BLACKFIN		106 /* Analog Devices Blackfin (DSP) processor */
193#define EM_ARCA			109 /* Arca RISC Microprocessor */
194#define EM_VIDCORE3		137 /* Broadcom VideoCore III */
195#define EM_ARM64		183 /* ARM 64 bit */
196#define EM_AARCH64		EM_ARM64
197#define EM_AVR32		185 /* AVR-32 */
198#define EM_STM8			186 /* ST STM8S */
199#define EM_CUDA			190 /* Nvidia CUDA */
200#define EM_VIDCORE5		198 /* Broadcom VideoCore V */
201#define EM_NORC			218 /* Nanoradio Optimized RISC */
202#define EM_AMDGPU		224 /* AMD GPU */
203#define EM_RISCV		243 /* RISC-V */
204#define EM_BPF			247 /* Linux kernel bpf virtual machine */
205
206#define EM_ALPHA        0x9026 /* Digital Alpha (nonstandard, but the value
207								  everyone uses) */
208
209/* architecture class (EI_CLASS) */
210#define ELFCLASSNONE	0
211#define ELFCLASS32		1
212#define ELFCLASS64		2
213
214/* endian (EI_DATA) */
215#define ELFDATANONE	0	/* invalid */
216#define ELFDATA2LSB	1	/* little endian */
217#define ELFDATA2MSB	2	/* big endian */
218
219/* ELF version (EI_VERSION) */
220#define EV_NONE		0	/* invalid */
221#define EV_CURRENT	1	/* current version */
222
223/*** section header ***/
224
225typedef struct {
226	Elf32_Word	sh_name;
227	Elf32_Word	sh_type;
228	Elf32_Word	sh_flags;
229	Elf32_Addr	sh_addr;
230	Elf32_Off	sh_offset;
231	Elf32_Word	sh_size;
232	Elf32_Word	sh_link;
233	Elf32_Word	sh_info;
234	Elf32_Word	sh_addralign;
235	Elf32_Word	sh_entsize;
236} Elf32_Shdr;
237
238typedef struct {
239	Elf64_Word	sh_name;
240	Elf64_Word	sh_type;
241	Elf64_Xword	sh_flags;
242	Elf64_Addr	sh_addr;
243	Elf64_Off	sh_offset;
244	Elf64_Xword	sh_size;
245	Elf64_Word	sh_link;
246	Elf64_Word	sh_info;
247	Elf64_Xword	sh_addralign;
248	Elf64_Xword	sh_entsize;
249} Elf64_Shdr;
250
251/* special section indices */
252#define SHN_UNDEF		0
253#define SHN_LORESERVE	0xff00
254#define SHN_LOPROC		0xff00
255#define SHN_HIPROC		0xff1f
256#define SHN_ABS			0xfff1
257#define SHN_COMMON		0xfff2
258#define SHN_HIRESERVE	0xffff
259
260/* section header type */
261#define SHT_NULL		0
262#define SHT_PROGBITS	1
263#define SHT_SYMTAB		2
264#define SHT_STRTAB		3
265#define SHT_RELA		4
266#define SHT_HASH		5
267#define SHT_DYNAMIC		6
268#define SHT_NOTE		7
269#define SHT_NOBITS		8
270#define SHT_REL			9
271#define SHT_SHLIB		10
272#define SHT_DYNSYM		11
273
274#define SHT_GNU_verdef	0x6ffffffd    /* version definition section */
275#define SHT_GNU_verneed	0x6ffffffe    /* version needs section */
276#define SHT_GNU_versym	0x6fffffff    /* version symbol table */
277
278#define SHT_LOPROC		0x70000000
279#define SHT_HIPROC		0x7fffffff
280#define SHT_LOUSER		0x80000000
281#define SHT_HIUSER		0xffffffff
282
283/* section header flags */
284#define SHF_WRITE		1
285#define SHF_ALLOC		2
286#define SHF_EXECINSTR	4
287
288#define SHF_MASKPROC	0xf0000000
289
290
291/*** program header ***/
292
293typedef struct {
294	Elf32_Word	p_type;
295	Elf32_Off	p_offset;	/* offset from the beginning of the file of the segment */
296	Elf32_Addr	p_vaddr;	/* virtual address for the segment in memory */
297	Elf32_Addr	p_paddr;
298	Elf32_Word	p_filesz;	/* the size of the segment in the file */
299	Elf32_Word	p_memsz;	/* the size of the segment in memory */
300	Elf32_Word	p_flags;
301	Elf32_Word	p_align;
302
303#ifdef __cplusplus
304	bool IsReadWrite() const;
305	bool IsExecutable() const;
306#endif
307} Elf32_Phdr;
308
309typedef struct {
310	Elf64_Word	p_type;
311	Elf64_Word	p_flags;
312	Elf64_Off	p_offset;	/* offset from the beginning of the file of the segment */
313	Elf64_Addr	p_vaddr;	/* virtual address for the segment in memory */
314	Elf64_Addr	p_paddr;
315	Elf64_Xword	p_filesz;	/* the size of the segment in the file */
316	Elf64_Xword	p_memsz;	/* the size of the segment in memory */
317	Elf64_Xword	p_align;
318
319#ifdef __cplusplus
320	bool IsReadWrite() const;
321	bool IsExecutable() const;
322#endif
323} Elf64_Phdr;
324
325/* program header segment types */
326#define PT_NULL			0
327#define PT_LOAD			1
328#define PT_DYNAMIC		2
329#define PT_INTERP		3
330#define PT_NOTE			4
331#define PT_SHLIB		5
332#define PT_PHDR			6
333#define PT_TLS			7
334#define PT_EH_FRAME		0x6474e550
335#define PT_STACK		0x6474e551
336#define PT_RELRO		0x6474e552
337
338#define PT_LOPROC		0x70000000
339#define PT_ARM_UNWIND	0x70000001
340#define PT_HIPROC		0x7fffffff
341
342/* program header segment flags */
343#define PF_EXECUTE	0x1
344#define PF_WRITE	0x2
345#define PF_READ		0x4
346#define PF_PROTECTION_MASK (PF_EXECUTE | PF_WRITE | PF_READ)
347
348#define PF_MASKPROC	0xf0000000
349
350
351/* symbol table entry */
352
353typedef struct {
354	Elf32_Word	st_name;
355	Elf32_Addr	st_value;
356	Elf32_Word	st_size;
357	uint8		st_info;
358	uint8 		st_other;
359	Elf32_Half	st_shndx;
360
361#ifdef __cplusplus
362	uint8 Bind() const;
363	uint8 Type() const;
364	void SetInfo(uint8 bind, uint8 type);
365#endif
366} Elf32_Sym;
367
368typedef struct {
369	Elf64_Word	st_name;
370	uint8		st_info;
371	uint8		st_other;
372	Elf64_Half	st_shndx;
373	Elf64_Addr	st_value;
374	Elf64_Xword	st_size;
375
376#ifdef __cplusplus
377	uint8 Bind() const;
378	uint8 Type() const;
379	void SetInfo(uint8 bind, uint8 type);
380#endif
381} Elf64_Sym;
382
383#define ELF32_ST_BIND(i) ((i) >> 4)
384#define ELF32_ST_TYPE(i) ((i) & 0xf)
385#define ELF32_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf))
386
387#define ELF64_ST_BIND(i) ((i) >> 4)
388#define ELF64_ST_TYPE(i) ((i) & 0xf)
389#define ELF64_ST_INFO(b, t) (((b) << 4) + ((t) & 0xf))
390
391/* symbol types */
392#define STT_NOTYPE 0
393#define STT_OBJECT 1
394#define STT_FUNC 2
395#define STT_SECTION 3
396#define STT_FILE 4
397#define STT_TLS		6
398#define STT_LOPROC 13
399#define STT_HIPROC 15
400
401/* symbol binding */
402#define STB_LOCAL 0
403#define STB_GLOBAL 1
404#define STB_WEAK 2
405#define STB_LOPROC 13
406#define STB_HIPROC 15
407
408/* special symbol indices */
409#define STN_UNDEF 0
410
411
412/* relocation table entry */
413
414typedef struct {
415	Elf32_Addr r_offset;
416	Elf32_Word r_info;
417
418#ifdef __cplusplus
419	uint8 SymbolIndex() const;
420	uint8 Type() const;
421#endif
422} Elf32_Rel;
423
424typedef struct {
425	Elf64_Addr	r_offset;
426	Elf64_Xword	r_info;
427
428#ifdef __cplusplus
429	uint8 SymbolIndex() const;
430	uint8 Type() const;
431#endif
432} Elf64_Rel;
433
434#ifdef __cplusplus
435typedef struct Elf32_Rela : public Elf32_Rel {
436#else
437typedef struct {
438	Elf32_Addr r_offset;
439	Elf32_Word r_info;
440#endif
441	Elf32_Sword r_addend;
442} Elf32_Rela;
443
444#ifdef __cplusplus
445typedef struct Elf64_Rela : public Elf64_Rel {
446#else
447typedef struct {
448	Elf64_Addr		r_offset;
449	Elf64_Xword		r_info;
450#endif
451	Elf64_Sxword	r_addend;
452} Elf64_Rela;
453
454#define ELF32_R_SYM(i) ((i) >> 8)
455#define ELF32_R_TYPE(i) ((unsigned char)(i))
456#define ELF32_R_INFO(s, t) (((s) << 8) + (unsigned char)(t))
457
458#define ELF64_R_SYM(i) ((i) >> 32)
459#define ELF64_R_TYPE(i) ((i) & 0xffffffffL)
460#define ELF64_R_INFO(s, t) ((((Elf64_Xword)(s)) << 32) + ((t) & 0xffffffffL))
461
462
463/* dynamic section entry */
464
465typedef struct {
466	Elf32_Sword d_tag;
467	union {
468		Elf32_Word d_val;
469		Elf32_Addr d_ptr;
470	} d_un;
471} Elf32_Dyn;
472
473typedef struct {
474	Elf64_Sxword d_tag;
475	union {
476		Elf64_Xword	d_val;
477		Elf64_Addr	d_ptr;
478	} d_un;
479} Elf64_Dyn;
480
481/* dynamic entry type */
482#define DT_NULL				0
483#define DT_NEEDED			1
484#define DT_PLTRELSZ			2
485#define DT_PLTGOT			3
486#define DT_HASH				4
487#define DT_STRTAB			5
488#define DT_SYMTAB			6
489#define DT_RELA				7
490#define DT_RELASZ			8
491#define DT_RELAENT			9
492#define DT_STRSZ			10
493#define DT_SYMENT			11
494#define DT_INIT				12
495#define DT_FINI				13
496#define DT_SONAME			14
497#define DT_RPATH			15
498#define DT_SYMBOLIC			16
499#define DT_REL				17
500#define DT_RELSZ			18
501#define DT_RELENT			19
502#define DT_PLTREL			20
503#define DT_DEBUG			21
504#define DT_TEXTREL			22
505#define DT_JMPREL			23
506#define DT_BIND_NOW			24	/* no lazy binding */
507#define DT_INIT_ARRAY		25	/* init function array */
508#define DT_FINI_ARRAY		26	/* termination function array */
509#define DT_INIT_ARRAYSZ		27	/* init function array size */
510#define DT_FINI_ARRAYSZ		28	/* termination function array size */
511#define DT_RUNPATH			29	/* library search path (supersedes DT_RPATH) */
512#define DT_FLAGS			30	/* flags (see below) */
513#define DT_ENCODING			32
514#define DT_PREINIT_ARRAY	32	/* preinitialization array */
515#define DT_PREINIT_ARRAYSZ	33	/* preinitialization array size */
516
517#define DT_VERSYM       0x6ffffff0	/* symbol version table */
518#define DT_VERDEF		0x6ffffffc	/* version definition table */
519#define DT_VERDEFNUM	0x6ffffffd	/* number of version definitions */
520#define DT_VERNEED		0x6ffffffe 	/* table with needed versions */
521#define DT_VERNEEDNUM	0x6fffffff	/* number of needed versions */
522
523#define DT_LOPROC		0x70000000
524#define DT_HIPROC		0x7fffffff
525
526/* DT_FLAGS values */
527#define DF_ORIGIN		0x01
528#define DF_SYMBOLIC		0x02
529#define DF_TEXTREL		0x04
530#define DF_BIND_NOW		0x08
531#define DF_STATIC_TLS	0x10
532
533
534/* version definition section */
535
536typedef struct {
537	Elf32_Half	vd_version;		/* version revision */
538	Elf32_Half	vd_flags;		/* version information flags */
539	Elf32_Half	vd_ndx;			/* version index as specified in the
540								   symbol version table */
541	Elf32_Half	vd_cnt;			/* number of associated verdaux entries */
542	Elf32_Word	vd_hash;		/* version name hash value */
543	Elf32_Word	vd_aux;			/* byte offset to verdaux array */
544	Elf32_Word	vd_next;		/* byte offset to next verdef entry */
545} Elf32_Verdef;
546
547typedef struct {
548	Elf64_Half	vd_version;		/* version revision */
549	Elf64_Half	vd_flags;		/* version information flags */
550	Elf64_Half	vd_ndx;			/* version index as specified in the
551								   symbol version table */
552	Elf64_Half	vd_cnt;			/* number of associated verdaux entries */
553	Elf64_Word	vd_hash;		/* version name hash value */
554	Elf64_Word	vd_aux;			/* byte offset to verdaux array */
555	Elf64_Word	vd_next;		/* byte offset to next verdef entry */
556} Elf64_Verdef;
557
558/* values for vd_version (version revision) */
559#define VER_DEF_NONE		0		/* no version */
560#define VER_DEF_CURRENT		1		/* current version */
561#define VER_DEF_NUM			2		/* given version number */
562
563/* values for vd_flags (version information flags) */
564#define VER_FLG_BASE		0x1		/* version definition of file itself */
565#define VER_FLG_WEAK		0x2 	/* weak version identifier */
566
567/* values for versym symbol index */
568#define VER_NDX_LOCAL		0		/* symbol is local */
569#define VER_NDX_GLOBAL		1		/* symbol is global/unversioned */
570#define VER_NDX_INITIAL		2		/* initial version -- that's the one given
571									   to symbols when a library becomes
572									   versioned; handled by the linker (and
573									   runtime loader) similar to
574									   VER_NDX_GLOBAL */
575#define VER_NDX_LORESERVE	0xff00	/* beginning of reserved entries */
576#define VER_NDX_ELIMINATE	0xff01	/* symbol is to be eliminated */
577
578#define VER_NDX_FLAG_HIDDEN	0x8000	/* flag: version is hidden */
579#define VER_NDX_MASK		0x7fff	/* mask to get the actual version index */
580#define VER_NDX(x)			((x) & VER_NDX_MASK)
581
582
583/* auxiliary version information */
584
585typedef struct {
586	Elf32_Word	vda_name;		/* string table offset to version or dependency
587								   name */
588	Elf32_Word	vda_next;		/* byte offset to next verdaux entry */
589} Elf32_Verdaux;
590
591typedef struct {
592	Elf64_Word	vda_name;		/* string table offset to version or dependency
593								   name */
594	Elf64_Word	vda_next;		/* byte offset to next verdaux entry */
595} Elf64_Verdaux;
596
597
598/* version dependency section */
599
600typedef struct {
601	Elf32_Half	vn_version;		/* version of structure */
602	Elf32_Half	vn_cnt;			/* number of associated vernaux entries */
603	Elf32_Word	vn_file;		/* byte offset to file name for this
604								   dependency */
605	Elf32_Word	vn_aux;			/* byte offset to vernaux array */
606	Elf32_Word	vn_next;		/* byte offset to next verneed entry */
607} Elf32_Verneed;
608
609typedef struct {
610	Elf64_Half	vn_version;		/* version of structure */
611	Elf64_Half	vn_cnt;			/* number of associated vernaux entries */
612	Elf64_Word	vn_file;		/* byte offset to file name for this
613								   dependency */
614	Elf64_Word	vn_aux;			/* byte offset to vernaux array */
615	Elf64_Word	vn_next;		/* byte offset to next verneed entry */
616} Elf64_Verneed;
617
618/* values for vn_version (version revision) */
619#define VER_NEED_NONE		0	/* no version */
620#define VER_NEED_CURRENT	1	/* current version */
621#define VER_NEED_NUM		2	/* given version number */
622
623
624/* auxiliary needed version information */
625
626typedef struct {
627	Elf32_Word	vna_hash;		/* dependency name hash value */
628	Elf32_Half	vna_flags;		/* dependency specific information flags */
629	Elf32_Half	vna_other;		/* version index as specified in the symbol
630								   version table */
631	Elf32_Word	vna_name;		/* string table offset to dependency name */
632	Elf32_Word	vna_next;		/* byte offset to next vernaux entry */
633} Elf32_Vernaux;
634
635typedef struct {
636	Elf64_Word	vna_hash;		/* dependency name hash value */
637	Elf64_Half	vna_flags;		/* dependency specific information flags */
638	Elf64_Half	vna_other;		/* version index as specified in the symbol
639								   version table */
640	Elf64_Word	vna_name;		/* string table offset to dependency name */
641	Elf64_Word	vna_next;		/* byte offset to next vernaux entry */
642} Elf64_Vernaux;
643
644/* values for vna_flags */
645#define VER_FLG_WEAK	0x2		/* weak version identifier */
646
647
648/*** core files ***/
649
650/* note section header */
651
652typedef struct {
653	Elf32_Word n_namesz;		/* length of the note's name */
654	Elf32_Word n_descsz;		/* length of the note's descriptor */
655	Elf32_Word n_type;			/* note type */
656} Elf32_Nhdr;
657
658typedef struct {
659	Elf64_Word n_namesz;		/* length of the note's name */
660	Elf64_Word n_descsz;		/* length of the note's descriptor */
661	Elf64_Word n_type;			/* note type */
662} Elf64_Nhdr;
663
664/* values for note name */
665#define ELF_NOTE_CORE		"CORE"
666#define ELF_NOTE_HAIKU		"Haiku"
667
668/* values for note type (n_type) */
669/* ELF_NOTE_CORE/... */
670#define NT_FILE				0x46494c45 /* mapped files */
671
672/* ELF_NOTE_HAIKU/... */
673#define NT_TEAM				0x7465616d 	/* team */
674#define NT_AREAS			0x61726561 	/* areas */
675#define NT_IMAGES			0x696d6167 	/* images */
676#define NT_THREADS			0x74687264 	/* threads */
677#define NT_SYMBOLS			0x73796d73 	/* symbols */
678
679/* NT_TEAM: uint32 entrySize; Elf32_Note_Team; char[] args */
680typedef struct {
681	int32		nt_id;				/* team ID */
682	int32		nt_uid;				/* team owner ID */
683	int32		nt_gid;				/* team group ID */
684} Elf32_Note_Team;
685
686typedef Elf32_Note_Team Elf64_Note_Team;
687
688/* NT_AREAS:
689 * uint32 count;
690 * uint32 entrySize;
691 * Elf32_Note_Area_Entry[count];
692 * char[] names
693 */
694typedef struct {
695	int32		na_id;				/* area ID */
696	uint32		na_lock;			/* lock type (B_NO_LOCK, ...) */
697	uint32		na_protection;		/* protection (B_READ_AREA | ...) */
698	uint32		na_base;			/* area base address */
699	uint32		na_size;			/* area size */
700	uint32		na_ram_size;		/* physical memory used */
701} Elf32_Note_Area_Entry;
702
703/* NT_AREAS:
704 * uint32 count;
705 * uint32 entrySize;
706 * Elf64_Note_Area_Entry[count];
707 * char[] names
708 */
709typedef struct {
710	int32		na_id;				/* area ID */
711	uint32		na_lock;			/* lock type (B_NO_LOCK, ...) */
712	uint32		na_protection;		/* protection (B_READ_AREA | ...) */
713	uint32		na_pad1;
714	uint64		na_base;			/* area base address */
715	uint64		na_size;			/* area size */
716	uint64		na_ram_size;		/* physical memory used */
717} Elf64_Note_Area_Entry;
718
719/* NT_IMAGES:
720 * uint32 count;
721 * uint32 entrySize;
722 * Elf32_Note_Image_Entry[count];
723 * char[] names
724 */
725typedef struct {
726	int32		ni_id;				/* image ID */
727	int32		ni_type;			/* image type (B_APP_IMAGE, ...) */
728	uint32		ni_init_routine;	/* address of init function */
729	uint32		ni_term_routine;	/* address of termination function */
730	int32		ni_device;			/* device ID of mapped file */
731	int64		ni_node;			/* node ID of mapped file */
732	uint32		ni_text_base;		/* base address of text segment */
733	uint32		ni_text_size;		/* size of text segment */
734	int32		ni_text_delta;		/* delta of the text segment relative to
735									   load address specified in the ELF file */
736	uint32		ni_data_base;		/* base address of data segment */
737	uint32		ni_data_size;		/* size of data segment */
738	uint32		ni_symbol_table;	/* address of dynamic symbol table */
739	uint32		ni_symbol_hash;		/* address of dynamic symbol hash */
740	uint32		ni_string_table;	/* address of dynamic string table */
741} Elf32_Note_Image_Entry;
742
743/* NT_IMAGES:
744 * uint32 count;
745 * uint32 entrySize;
746 * Elf64_Note_Image_Entry[count];
747 * char[] names
748 */
749typedef struct {
750	int32		ni_id;				/* image ID */
751	int32		ni_type;			/* image type (B_APP_IMAGE, ...) */
752	uint64		ni_init_routine;	/* address of init function */
753	uint64		ni_term_routine;	/* address of termination function */
754	uint32		ni_pad1;
755	int32		ni_device;			/* device ID of mapped file */
756	int64		ni_node;			/* node ID of mapped file */
757	uint64		ni_text_base;		/* base address of text segment */
758	uint64		ni_text_size;		/* size of text segment */
759	int64		ni_text_delta;		/* delta of the text segment relative to
760									   load address specified in the ELF file */
761	uint64		ni_data_base;		/* base address of data segment */
762	uint64		ni_data_size;		/* size of data segment */
763	uint64		ni_symbol_table;	/* address of dynamic symbol table */
764	uint64		ni_symbol_hash;		/* address of dynamic symbol hash */
765	uint64		ni_string_table;	/* address of dynamic string table */
766} Elf64_Note_Image_Entry;
767
768/* NT_THREADS:
769 * uint32 count;
770 * uint32 entrySize;
771 * uint32 cpuStateSize;
772 * {Elf32_Note_Thread_Entry, uint8[cpuStateSize] cpuState}[count];
773 * char[] names
774 */
775typedef struct {
776	int32		nth_id;				/* thread ID */
777	int32		nth_state;			/* thread state (B_THREAD_RUNNING, ...) */
778	int32		nth_priority;		/* thread priority */
779	uint32		nth_stack_base;		/* thread stack base address */
780	uint32		nth_stack_end;		/* thread stack end address */
781} Elf32_Note_Thread_Entry;
782
783/* NT_THREADS:
784 * uint32 count;
785 * uint32 entrySize;
786 * uint32 cpuStateSize;
787 * {Elf64_Note_Thread_Entry, uint8[cpuStateSize] cpuState}[count];
788 * char[] names
789 */
790typedef struct {
791	int32		nth_id;				/* thread ID */
792	int32		nth_state;			/* thread state (B_THREAD_RUNNING, ...) */
793	int32		nth_priority;		/* thread priority */
794	uint32		nth_pad1;
795	uint64		nth_stack_base;		/* thread stack base address */
796	uint64		nth_stack_end;		/* thread stack end address */
797} Elf64_Note_Thread_Entry;
798
799/* NT_SYMBOLS:
800 * int32 imageId;
801 * uint32 symbolCount;
802 * uint32 entrySize;
803 * Elf{32,64}_Sym[count];
804 * char[] strings
805 */
806
807
808/*** inline functions ***/
809
810#ifdef __cplusplus
811
812inline bool
813Elf32_Ehdr::IsHostEndian() const
814{
815#if B_HOST_IS_LENDIAN
816	return e_ident[EI_DATA] == ELFDATA2LSB;
817#elif B_HOST_IS_BENDIAN
818	return e_ident[EI_DATA] == ELFDATA2MSB;
819#endif
820}
821
822
823inline bool
824Elf64_Ehdr::IsHostEndian() const
825{
826#if B_HOST_IS_LENDIAN
827	return e_ident[EI_DATA] == ELFDATA2LSB;
828#elif B_HOST_IS_BENDIAN
829	return e_ident[EI_DATA] == ELFDATA2MSB;
830#endif
831}
832
833
834inline bool
835Elf32_Phdr::IsReadWrite() const
836{
837	return !(~p_flags & (PF_READ | PF_WRITE));
838}
839
840
841inline bool
842Elf32_Phdr::IsExecutable() const
843{
844	return (p_flags & PF_EXECUTE) != 0;
845}
846
847
848inline bool
849Elf64_Phdr::IsReadWrite() const
850{
851	return !(~p_flags & (PF_READ | PF_WRITE));
852}
853
854
855inline bool
856Elf64_Phdr::IsExecutable() const
857{
858	return (p_flags & PF_EXECUTE) != 0;
859}
860
861
862inline uint8
863Elf32_Sym::Bind() const
864{
865	return ELF32_ST_BIND(st_info);
866}
867
868
869inline uint8
870Elf32_Sym::Type() const
871{
872	return ELF32_ST_TYPE(st_info);
873}
874
875
876inline void
877Elf32_Sym::SetInfo(uint8 bind, uint8 type)
878{
879	st_info = ELF32_ST_INFO(bind, type);
880}
881
882
883inline uint8
884Elf64_Sym::Bind() const
885{
886	return ELF64_ST_BIND(st_info);
887}
888
889
890inline uint8
891Elf64_Sym::Type() const
892{
893	return ELF64_ST_TYPE(st_info);
894}
895
896
897inline void
898Elf64_Sym::SetInfo(uint8 bind, uint8 type)
899{
900	st_info = ELF64_ST_INFO(bind, type);
901}
902
903
904inline uint8
905Elf32_Rel::SymbolIndex() const
906{
907	return ELF32_R_SYM(r_info);
908}
909
910
911inline uint8
912Elf32_Rel::Type() const
913{
914	return ELF32_R_TYPE(r_info);
915}
916
917
918inline uint8
919Elf64_Rel::SymbolIndex() const
920{
921	return ELF64_R_SYM(r_info);
922}
923
924
925inline uint8
926Elf64_Rel::Type() const
927{
928	return ELF64_R_TYPE(r_info);
929}
930
931#endif	/* __cplusplus */
932
933
934#endif	/* _ELF_H */
935