2 * Copyright (C) 2001-2003 Hewlett-Packard Co.
3 * Contributed by Stephane Eranian <eranian@hpl.hp.com>
5 * This file is part of the ELILO, the EFI Linux boot loader.
7 * GNU EFI is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * GNU EFI is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU EFI; see the file COPYING. If not, write to the Free
19 * Software Foundation, 59 Temple Place - Suite 330, Boston, MA
22 * Please check out the elilo.txt for complete documentation on how
23 * to use this program.
25 * Portions of this file are derived from the LILO/x86
26 * Copyright 1992-1997 Werner Almesberger.
29 #ifndef __LINUX_ELF_H__
30 #define __LINUX_ELF_H__
33 * This file was derived from <linux/elf.h>.
38 /* 32-bit ELF base types. */
39 typedef UINT32 Elf32_Addr;
40 typedef UINT16 Elf32_Half;
41 typedef UINT32 Elf32_Off;
42 typedef INT32 Elf32_Sword;
43 typedef UINT32 Elf32_Word;
45 /* 64-bit ELF base types. */
46 typedef UINT64 Elf64_Addr;
47 typedef UINT16 Elf64_Half;
48 typedef INT16 Elf64_SHalf;
49 typedef UINT64 Elf64_Off;
50 typedef INT64 Elf64_Sword;
51 typedef UINT64 Elf64_Word;
53 /* These constants are for the segment types stored in the image headers */
61 #define PT_LOPROC 0x70000000
62 #define PT_HIPROC 0x7fffffff
63 #define PT_MIPS_REGINFO 0x70000000
65 /* Flags in the e_flags field of the header */
66 #define EF_MIPS_NOREORDER 0x00000001
67 #define EF_MIPS_PIC 0x00000002
68 #define EF_MIPS_CPIC 0x00000004
69 #define EF_MIPS_ARCH 0xf0000000
71 /* These constants define the different elf file types */
77 #define ET_LOPROC 0xff00
78 #define ET_HIPROC 0xffff
80 /* These constants define the various ELF target machines */
87 #define EM_486 6 /* Perhaps disused */
90 #define EM_MIPS 8 /* MIPS R3000 (officially, big-endian only) */
92 #define EM_MIPS_RS4_BE 10 /* MIPS R4000 big-endian */
94 #define EM_PARISC 15 /* HPPA */
96 #define EM_SPARC32PLUS 18 /* Sun's "v8plus" */
98 #define EM_PPC 20 /* PowerPC */
100 #define EM_SH 42 /* SuperH */
102 #define EM_SPARCV9 43 /* SPARC v9 64-bit */
104 #define EM_IA_64 50 /* HP/Intel IA-64 */
106 #define EM_X86_64 62 /* Intel/AMD x86-64 */
108 * This is an interim value that we will use until the committee comes
109 * up with a final number.
111 #define EM_ALPHA 0x9026
114 /* This is the info that is needed to parse the dynamic section of the file */
117 #define DT_PLTRELSZ 2
131 #define DT_SYMBOLIC 16
137 #define DT_TEXTREL 22
139 #define DT_LOPROC 0x70000000
140 #define DT_HIPROC 0x7fffffff
141 #define DT_MIPS_RLD_VERSION 0x70000001
142 #define DT_MIPS_TIME_STAMP 0x70000002
143 #define DT_MIPS_ICHECKSUM 0x70000003
144 #define DT_MIPS_IVERSION 0x70000004
145 #define DT_MIPS_FLAGS 0x70000005
147 # define RHF_HARDWAY 1
148 # define RHF_NOTPOT 2
149 #define DT_MIPS_BASE_ADDRESS 0x70000006
150 #define DT_MIPS_CONFLICT 0x70000008
151 #define DT_MIPS_LIBLIST 0x70000009
152 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
153 #define DT_MIPS_CONFLICTNO 0x7000000b
154 #define DT_MIPS_LIBLISTNO 0x70000010
155 #define DT_MIPS_SYMTABNO 0x70000011
156 #define DT_MIPS_UNREFEXTNO 0x70000012
157 #define DT_MIPS_GOTSYM 0x70000013
158 #define DT_MIPS_HIPAGENO 0x70000014
159 #define DT_MIPS_RLD_MAP 0x70000016
161 /* This info is needed when parsing the symbol table */
169 #define STT_SECTION 3
172 #define ELF32_ST_BIND(x) ((x) >> 4)
173 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
175 /* Symbolic values for the entries in the auxiliary table
176 put on the initial stack */
177 #define AT_NULL 0 /* end of vector */
178 #define AT_IGNORE 1 /* entry should be ignored */
179 #define AT_EXECFD 2 /* file descriptor of program */
180 #define AT_PHDR 3 /* program headers for program */
181 #define AT_PHENT 4 /* size of program header entry */
182 #define AT_PHNUM 5 /* number of program headers */
183 #define AT_PAGESZ 6 /* system page size */
184 #define AT_BASE 7 /* base address of interpreter */
185 #define AT_FLAGS 8 /* flags */
186 #define AT_ENTRY 9 /* entry point of program */
187 #define AT_NOTELF 10 /* program is not ELF */
188 #define AT_UID 11 /* real uid */
189 #define AT_EUID 12 /* effective uid */
190 #define AT_GID 13 /* real gid */
191 #define AT_EGID 14 /* effective gid */
192 #define AT_PLATFORM 15 /* string identifying CPU for optimizations */
193 #define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
195 typedef struct dynamic{
204 Elf64_Word d_tag; /* entry tag value */
211 /* The following are used with relocations */
212 #define ELF32_R_SYM(x) ((x) >> 8)
213 #define ELF32_R_TYPE(x) ((x) & 0xff)
218 #define R_386_GOT32 3
219 #define R_386_PLT32 4
221 #define R_386_GLOB_DAT 6
222 #define R_386_JMP_SLOT 7
223 #define R_386_RELATIVE 8
224 #define R_386_GOTOFF 9
225 #define R_386_GOTPC 10
228 #define R_MIPS_NONE 0
231 #define R_MIPS_REL32 3
233 #define R_MIPS_HI16 5
234 #define R_MIPS_LO16 6
235 #define R_MIPS_GPREL16 7
236 #define R_MIPS_LITERAL 8
237 #define R_MIPS_GOT16 9
238 #define R_MIPS_PC16 10
239 #define R_MIPS_CALL16 11
240 #define R_MIPS_GPREL32 12
241 /* The remaining relocs are defined on Irix, although they are not
242 in the MIPS ELF ABI. */
243 #define R_MIPS_UNUSED1 13
244 #define R_MIPS_UNUSED2 14
245 #define R_MIPS_UNUSED3 15
246 #define R_MIPS_SHIFT5 16
247 #define R_MIPS_SHIFT6 17
249 #define R_MIPS_GOT_DISP 19
250 #define R_MIPS_GOT_PAGE 20
251 #define R_MIPS_GOT_OFST 21
253 * The following two relocation types are specified in the the MIPS ABI
254 * conformance guide version 1.2 but not yet in the psABI.
256 #define R_MIPS_GOTHI16 22
257 #define R_MIPS_GOTLO16 23
258 #define R_MIPS_SUB 24
259 #define R_MIPS_INSERT_A 25
260 #define R_MIPS_INSERT_B 26
261 #define R_MIPS_DELETE 27
262 #define R_MIPS_HIGHER 28
263 #define R_MIPS_HIGHEST 29
265 * The following two relocation types are specified in the the MIPS ABI
266 * conformance guide version 1.2 but not yet in the psABI.
268 #define R_MIPS_CALLHI16 30
269 #define R_MIPS_CALLLO16 31
271 * This range is reserved for vendor specific relocations.
273 #define R_MIPS_LOVENDOR 100
274 #define R_MIPS_HIVENDOR 127
278 * Sparc ELF relocation types
280 #define R_SPARC_NONE 0
284 #define R_SPARC_DISP8 4
285 #define R_SPARC_DISP16 5
286 #define R_SPARC_DISP32 6
287 #define R_SPARC_WDISP30 7
288 #define R_SPARC_WDISP22 8
289 #define R_SPARC_HI22 9
290 #define R_SPARC_22 10
291 #define R_SPARC_13 11
292 #define R_SPARC_LO10 12
293 #define R_SPARC_GOT10 13
294 #define R_SPARC_GOT13 14
295 #define R_SPARC_GOT22 15
296 #define R_SPARC_PC10 16
297 #define R_SPARC_PC22 17
298 #define R_SPARC_WPLT30 18
299 #define R_SPARC_COPY 19
300 #define R_SPARC_GLOB_DAT 20
301 #define R_SPARC_JMP_SLOT 21
302 #define R_SPARC_RELATIVE 22
303 #define R_SPARC_UA32 23
304 #define R_SPARC_PLT32 24
305 #define R_SPARC_HIPLT22 25
306 #define R_SPARC_LOPLT10 26
307 #define R_SPARC_PCPLT32 27
308 #define R_SPARC_PCPLT22 28
309 #define R_SPARC_PCPLT10 29
310 #define R_SPARC_10 30
311 #define R_SPARC_11 31
312 #define R_SPARC_WDISP16 40
313 #define R_SPARC_WDISP19 41
318 /* Bits present in AT_HWCAP, primarily for Sparc32. */
320 #define HWCAP_SPARC_FLUSH 1 /* CPU supports flush instruction. */
321 #define HWCAP_SPARC_STBAR 2
322 #define HWCAP_SPARC_SWAP 4
323 #define HWCAP_SPARC_MULDIV 8
324 #define HWCAP_SPARC_V9 16
328 * 68k ELF relocation types
337 #define R_68K_GOT32 7
338 #define R_68K_GOT16 8
340 #define R_68K_GOT32O 10
341 #define R_68K_GOT16O 11
342 #define R_68K_GOT8O 12
343 #define R_68K_PLT32 13
344 #define R_68K_PLT16 14
345 #define R_68K_PLT8 15
346 #define R_68K_PLT32O 16
347 #define R_68K_PLT16O 17
348 #define R_68K_PLT8O 18
349 #define R_68K_COPY 19
350 #define R_68K_GLOB_DAT 20
351 #define R_68K_JMP_SLOT 21
352 #define R_68K_RELATIVE 22
355 * Alpha ELF relocation types
357 #define R_ALPHA_NONE 0 /* No reloc */
358 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */
359 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
360 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
361 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
362 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
363 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */
364 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
365 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
366 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */
367 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */
368 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */
369 #define R_ALPHA_OP_PUSH 12 /* OP stack push */
370 #define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
371 #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
372 #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
373 #define R_ALPHA_GPVALUE 16
374 #define R_ALPHA_GPRELHIGH 17
375 #define R_ALPHA_GPRELLOW 18
376 #define R_ALPHA_IMMED_GP_16 19
377 #define R_ALPHA_IMMED_GP_HI32 20
378 #define R_ALPHA_IMMED_SCN_HI32 21
379 #define R_ALPHA_IMMED_BR_HI32 22
380 #define R_ALPHA_IMMED_LO32 23
381 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */
382 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
383 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
384 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */
386 /* Legal values for e_flags field of Elf64_Ehdr. */
388 #define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */
391 typedef struct elf32_rel {
396 typedef struct elf64_rel {
397 Elf64_Addr r_offset; /* Location at which to apply the action */
398 Elf64_Word r_info; /* index and type of relocation */
401 typedef struct elf32_rela{
404 Elf32_Sword r_addend;
407 typedef struct elf64_rela {
408 Elf64_Addr r_offset; /* Location at which to apply the action */
409 Elf64_Word r_info; /* index and type of relocation */
410 Elf64_Word r_addend; /* Constant addend used to compute value */
413 typedef struct elf32_sym{
417 unsigned char st_info;
418 unsigned char st_other;
422 typedef struct elf64_sym {
423 Elf32_Word st_name; /* Symbol name, index in string tbl (yes, Elf32) */
424 unsigned char st_info; /* Type and binding attributes */
425 unsigned char st_other; /* No defined meaning, 0 */
426 Elf64_Half st_shndx; /* Associated section index */
427 Elf64_Addr st_value; /* Value of the symbol */
428 Elf64_Word st_size; /* Associated symbol size */
434 typedef struct elf32_hdr{
435 unsigned char e_ident[EI_NIDENT];
437 Elf32_Half e_machine;
438 Elf32_Word e_version;
439 Elf32_Addr e_entry; /* Entry point */
444 Elf32_Half e_phentsize;
446 Elf32_Half e_shentsize;
448 Elf32_Half e_shstrndx;
451 typedef struct elf64_hdr {
452 unsigned char e_ident[16]; /* ELF "magic number" */
454 Elf64_Half e_machine;
456 Elf64_Addr e_entry; /* Entry point virtual address */
457 Elf64_Off e_phoff; /* Program header table file offset */
458 Elf64_Off e_shoff; /* Section header table file offset */
460 Elf64_SHalf e_ehsize;
461 Elf64_SHalf e_phentsize;
463 Elf64_SHalf e_shentsize;
465 Elf64_SHalf e_shstrndx;
468 /* These constants define the permissions on sections in the program
474 typedef struct elf32_phdr{
485 typedef struct elf64_phdr {
488 Elf64_Off p_offset; /* Segment file offset */
489 Elf64_Addr p_vaddr; /* Segment virtual address */
490 Elf64_Addr p_paddr; /* Segment physical address */
491 Elf64_Word p_filesz; /* Segment size in file */
492 Elf64_Word p_memsz; /* Segment size in memory */
493 Elf64_Word p_align; /* Segment alignment, file & memory */
498 #define SHT_PROGBITS 1
503 #define SHT_DYNAMIC 6
508 #define SHT_DYNSYM 11
510 #define SHT_LOPROC 0x70000000
511 #define SHT_HIPROC 0x7fffffff
512 #define SHT_LOUSER 0x80000000
513 #define SHT_HIUSER 0xffffffff
514 #define SHT_MIPS_LIST 0x70000000
515 #define SHT_MIPS_CONFLICT 0x70000002
516 #define SHT_MIPS_GPTAB 0x70000003
517 #define SHT_MIPS_UCODE 0x70000004
520 #define SHF_WRITE 0x1
521 #define SHF_ALLOC 0x2
522 #define SHF_EXECINSTR 0x4
523 #define SHF_MASKPROC 0xf0000000
524 #define SHF_MIPS_GPREL 0x10000000
526 /* special section indexes */
528 #define SHN_LORESERVE 0xff00
529 #define SHN_LOPROC 0xff00
530 #define SHN_HIPROC 0xff1f
531 #define SHN_ABS 0xfff1
532 #define SHN_COMMON 0xfff2
533 #define SHN_HIRESERVE 0xffff
534 #define SHN_MIPS_ACCOMON 0xff00
545 Elf32_Word sh_addralign;
546 Elf32_Word sh_entsize;
549 typedef struct elf64_shdr {
550 Elf32_Word sh_name; /* Section name, index in string tbl (yes Elf32) */
551 Elf32_Word sh_type; /* Type of section (yes Elf32) */
552 Elf64_Word sh_flags; /* Miscellaneous section attributes */
553 Elf64_Addr sh_addr; /* Section virtual addr at execution */
554 Elf64_Off sh_offset; /* Section file offset */
555 Elf64_Word sh_size; /* Size of section in bytes */
556 Elf32_Word sh_link; /* Index of another section (yes Elf32) */
557 Elf32_Word sh_info; /* Additional section information (yes Elf32) */
558 Elf64_Word sh_addralign; /* Section alignment */
559 Elf64_Word sh_entsize; /* Entry size if section holds table */
562 #define EI_MAG0 0 /* e_ident[] indexes */
571 #define ELFMAG0 0x7f /* EI_MAG */
575 #define ELFMAG "\177ELF"
578 #define ELFCLASSNONE 0 /* EI_CLASS */
581 #define ELFCLASSNUM 3
583 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
584 #define ELFDATA2LSB 1
585 #define ELFDATA2MSB 2
587 #define EV_NONE 0 /* e_version, EI_VERSION */
591 /* Notes used in ET_CORE */
592 #define NT_PRSTATUS 1
594 #define NT_PRPSINFO 3
595 #define NT_TASKSTRUCT 4
597 /* Note header in a PT_NOTE section */
598 typedef struct elf32_note {
599 Elf32_Word n_namesz; /* Name size */
600 Elf32_Word n_descsz; /* Content size */
601 Elf32_Word n_type; /* Content type */
604 /* Note header in a PT_NOTE section */
606 * For now we use the 32 bit version of the structure until we figure
607 * out whether we need anything better. Note - on the Alpha, "unsigned int"
610 typedef struct elf64_note {
611 Elf32_Word n_namesz; /* Name size */
612 Elf32_Word n_descsz; /* Content size */
613 Elf32_Word n_type; /* Content type */
616 #if ELF_CLASS == ELFCLASS32
618 extern Elf32_Dyn _DYNAMIC [];
619 #define elfhdr elf32_hdr
620 #define elf_phdr elf32_phdr
621 #define elf_note elf32_note
625 extern Elf64_Dyn _DYNAMIC [];
626 #define elfhdr elf64_hdr
627 #define elf_phdr elf64_phdr
628 #define elf_note elf64_note
633 #endif /* __LINUX_ELF_H__ */