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 */
107 * This is an interim value that we will use until the committee comes
108 * up with a final number.
110 #define EM_ALPHA 0x9026
113 /* This is the info that is needed to parse the dynamic section of the file */
116 #define DT_PLTRELSZ 2
130 #define DT_SYMBOLIC 16
136 #define DT_TEXTREL 22
138 #define DT_LOPROC 0x70000000
139 #define DT_HIPROC 0x7fffffff
140 #define DT_MIPS_RLD_VERSION 0x70000001
141 #define DT_MIPS_TIME_STAMP 0x70000002
142 #define DT_MIPS_ICHECKSUM 0x70000003
143 #define DT_MIPS_IVERSION 0x70000004
144 #define DT_MIPS_FLAGS 0x70000005
146 # define RHF_HARDWAY 1
147 # define RHF_NOTPOT 2
148 #define DT_MIPS_BASE_ADDRESS 0x70000006
149 #define DT_MIPS_CONFLICT 0x70000008
150 #define DT_MIPS_LIBLIST 0x70000009
151 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
152 #define DT_MIPS_CONFLICTNO 0x7000000b
153 #define DT_MIPS_LIBLISTNO 0x70000010
154 #define DT_MIPS_SYMTABNO 0x70000011
155 #define DT_MIPS_UNREFEXTNO 0x70000012
156 #define DT_MIPS_GOTSYM 0x70000013
157 #define DT_MIPS_HIPAGENO 0x70000014
158 #define DT_MIPS_RLD_MAP 0x70000016
160 /* This info is needed when parsing the symbol table */
168 #define STT_SECTION 3
171 #define ELF32_ST_BIND(x) ((x) >> 4)
172 #define ELF32_ST_TYPE(x) (((unsigned int) x) & 0xf)
174 /* Symbolic values for the entries in the auxiliary table
175 put on the initial stack */
176 #define AT_NULL 0 /* end of vector */
177 #define AT_IGNORE 1 /* entry should be ignored */
178 #define AT_EXECFD 2 /* file descriptor of program */
179 #define AT_PHDR 3 /* program headers for program */
180 #define AT_PHENT 4 /* size of program header entry */
181 #define AT_PHNUM 5 /* number of program headers */
182 #define AT_PAGESZ 6 /* system page size */
183 #define AT_BASE 7 /* base address of interpreter */
184 #define AT_FLAGS 8 /* flags */
185 #define AT_ENTRY 9 /* entry point of program */
186 #define AT_NOTELF 10 /* program is not ELF */
187 #define AT_UID 11 /* real uid */
188 #define AT_EUID 12 /* effective uid */
189 #define AT_GID 13 /* real gid */
190 #define AT_EGID 14 /* effective gid */
191 #define AT_PLATFORM 15 /* string identifying CPU for optimizations */
192 #define AT_HWCAP 16 /* arch dependent hints at CPU capabilities */
194 typedef struct dynamic{
203 Elf64_Word d_tag; /* entry tag value */
210 /* The following are used with relocations */
211 #define ELF32_R_SYM(x) ((x) >> 8)
212 #define ELF32_R_TYPE(x) ((x) & 0xff)
217 #define R_386_GOT32 3
218 #define R_386_PLT32 4
220 #define R_386_GLOB_DAT 6
221 #define R_386_JMP_SLOT 7
222 #define R_386_RELATIVE 8
223 #define R_386_GOTOFF 9
224 #define R_386_GOTPC 10
227 #define R_MIPS_NONE 0
230 #define R_MIPS_REL32 3
232 #define R_MIPS_HI16 5
233 #define R_MIPS_LO16 6
234 #define R_MIPS_GPREL16 7
235 #define R_MIPS_LITERAL 8
236 #define R_MIPS_GOT16 9
237 #define R_MIPS_PC16 10
238 #define R_MIPS_CALL16 11
239 #define R_MIPS_GPREL32 12
240 /* The remaining relocs are defined on Irix, although they are not
241 in the MIPS ELF ABI. */
242 #define R_MIPS_UNUSED1 13
243 #define R_MIPS_UNUSED2 14
244 #define R_MIPS_UNUSED3 15
245 #define R_MIPS_SHIFT5 16
246 #define R_MIPS_SHIFT6 17
248 #define R_MIPS_GOT_DISP 19
249 #define R_MIPS_GOT_PAGE 20
250 #define R_MIPS_GOT_OFST 21
252 * The following two relocation types are specified in the the MIPS ABI
253 * conformance guide version 1.2 but not yet in the psABI.
255 #define R_MIPS_GOTHI16 22
256 #define R_MIPS_GOTLO16 23
257 #define R_MIPS_SUB 24
258 #define R_MIPS_INSERT_A 25
259 #define R_MIPS_INSERT_B 26
260 #define R_MIPS_DELETE 27
261 #define R_MIPS_HIGHER 28
262 #define R_MIPS_HIGHEST 29
264 * The following two relocation types are specified in the the MIPS ABI
265 * conformance guide version 1.2 but not yet in the psABI.
267 #define R_MIPS_CALLHI16 30
268 #define R_MIPS_CALLLO16 31
270 * This range is reserved for vendor specific relocations.
272 #define R_MIPS_LOVENDOR 100
273 #define R_MIPS_HIVENDOR 127
277 * Sparc ELF relocation types
279 #define R_SPARC_NONE 0
283 #define R_SPARC_DISP8 4
284 #define R_SPARC_DISP16 5
285 #define R_SPARC_DISP32 6
286 #define R_SPARC_WDISP30 7
287 #define R_SPARC_WDISP22 8
288 #define R_SPARC_HI22 9
289 #define R_SPARC_22 10
290 #define R_SPARC_13 11
291 #define R_SPARC_LO10 12
292 #define R_SPARC_GOT10 13
293 #define R_SPARC_GOT13 14
294 #define R_SPARC_GOT22 15
295 #define R_SPARC_PC10 16
296 #define R_SPARC_PC22 17
297 #define R_SPARC_WPLT30 18
298 #define R_SPARC_COPY 19
299 #define R_SPARC_GLOB_DAT 20
300 #define R_SPARC_JMP_SLOT 21
301 #define R_SPARC_RELATIVE 22
302 #define R_SPARC_UA32 23
303 #define R_SPARC_PLT32 24
304 #define R_SPARC_HIPLT22 25
305 #define R_SPARC_LOPLT10 26
306 #define R_SPARC_PCPLT32 27
307 #define R_SPARC_PCPLT22 28
308 #define R_SPARC_PCPLT10 29
309 #define R_SPARC_10 30
310 #define R_SPARC_11 31
311 #define R_SPARC_WDISP16 40
312 #define R_SPARC_WDISP19 41
317 /* Bits present in AT_HWCAP, primarily for Sparc32. */
319 #define HWCAP_SPARC_FLUSH 1 /* CPU supports flush instruction. */
320 #define HWCAP_SPARC_STBAR 2
321 #define HWCAP_SPARC_SWAP 4
322 #define HWCAP_SPARC_MULDIV 8
323 #define HWCAP_SPARC_V9 16
327 * 68k ELF relocation types
336 #define R_68K_GOT32 7
337 #define R_68K_GOT16 8
339 #define R_68K_GOT32O 10
340 #define R_68K_GOT16O 11
341 #define R_68K_GOT8O 12
342 #define R_68K_PLT32 13
343 #define R_68K_PLT16 14
344 #define R_68K_PLT8 15
345 #define R_68K_PLT32O 16
346 #define R_68K_PLT16O 17
347 #define R_68K_PLT8O 18
348 #define R_68K_COPY 19
349 #define R_68K_GLOB_DAT 20
350 #define R_68K_JMP_SLOT 21
351 #define R_68K_RELATIVE 22
354 * Alpha ELF relocation types
356 #define R_ALPHA_NONE 0 /* No reloc */
357 #define R_ALPHA_REFLONG 1 /* Direct 32 bit */
358 #define R_ALPHA_REFQUAD 2 /* Direct 64 bit */
359 #define R_ALPHA_GPREL32 3 /* GP relative 32 bit */
360 #define R_ALPHA_LITERAL 4 /* GP relative 16 bit w/optimization */
361 #define R_ALPHA_LITUSE 5 /* Optimization hint for LITERAL */
362 #define R_ALPHA_GPDISP 6 /* Add displacement to GP */
363 #define R_ALPHA_BRADDR 7 /* PC+4 relative 23 bit shifted */
364 #define R_ALPHA_HINT 8 /* PC+4 relative 16 bit shifted */
365 #define R_ALPHA_SREL16 9 /* PC relative 16 bit */
366 #define R_ALPHA_SREL32 10 /* PC relative 32 bit */
367 #define R_ALPHA_SREL64 11 /* PC relative 64 bit */
368 #define R_ALPHA_OP_PUSH 12 /* OP stack push */
369 #define R_ALPHA_OP_STORE 13 /* OP stack pop and store */
370 #define R_ALPHA_OP_PSUB 14 /* OP stack subtract */
371 #define R_ALPHA_OP_PRSHIFT 15 /* OP stack right shift */
372 #define R_ALPHA_GPVALUE 16
373 #define R_ALPHA_GPRELHIGH 17
374 #define R_ALPHA_GPRELLOW 18
375 #define R_ALPHA_IMMED_GP_16 19
376 #define R_ALPHA_IMMED_GP_HI32 20
377 #define R_ALPHA_IMMED_SCN_HI32 21
378 #define R_ALPHA_IMMED_BR_HI32 22
379 #define R_ALPHA_IMMED_LO32 23
380 #define R_ALPHA_COPY 24 /* Copy symbol at runtime */
381 #define R_ALPHA_GLOB_DAT 25 /* Create GOT entry */
382 #define R_ALPHA_JMP_SLOT 26 /* Create PLT entry */
383 #define R_ALPHA_RELATIVE 27 /* Adjust by program base */
385 /* Legal values for e_flags field of Elf64_Ehdr. */
387 #define EF_ALPHA_32BIT 1 /* All addresses are below 2GB */
390 typedef struct elf32_rel {
395 typedef struct elf64_rel {
396 Elf64_Addr r_offset; /* Location at which to apply the action */
397 Elf64_Word r_info; /* index and type of relocation */
400 typedef struct elf32_rela{
403 Elf32_Sword r_addend;
406 typedef struct elf64_rela {
407 Elf64_Addr r_offset; /* Location at which to apply the action */
408 Elf64_Word r_info; /* index and type of relocation */
409 Elf64_Word r_addend; /* Constant addend used to compute value */
412 typedef struct elf32_sym{
416 unsigned char st_info;
417 unsigned char st_other;
421 typedef struct elf64_sym {
422 Elf32_Word st_name; /* Symbol name, index in string tbl (yes, Elf32) */
423 unsigned char st_info; /* Type and binding attributes */
424 unsigned char st_other; /* No defined meaning, 0 */
425 Elf64_Half st_shndx; /* Associated section index */
426 Elf64_Addr st_value; /* Value of the symbol */
427 Elf64_Word st_size; /* Associated symbol size */
433 typedef struct elf32_hdr{
434 unsigned char e_ident[EI_NIDENT];
436 Elf32_Half e_machine;
437 Elf32_Word e_version;
438 Elf32_Addr e_entry; /* Entry point */
443 Elf32_Half e_phentsize;
445 Elf32_Half e_shentsize;
447 Elf32_Half e_shstrndx;
450 typedef struct elf64_hdr {
451 unsigned char e_ident[16]; /* ELF "magic number" */
453 Elf64_Half e_machine;
455 Elf64_Addr e_entry; /* Entry point virtual address */
456 Elf64_Off e_phoff; /* Program header table file offset */
457 Elf64_Off e_shoff; /* Section header table file offset */
459 Elf64_SHalf e_ehsize;
460 Elf64_SHalf e_phentsize;
462 Elf64_SHalf e_shentsize;
464 Elf64_SHalf e_shstrndx;
467 /* These constants define the permissions on sections in the program
473 typedef struct elf32_phdr{
484 typedef struct elf64_phdr {
487 Elf64_Off p_offset; /* Segment file offset */
488 Elf64_Addr p_vaddr; /* Segment virtual address */
489 Elf64_Addr p_paddr; /* Segment physical address */
490 Elf64_Word p_filesz; /* Segment size in file */
491 Elf64_Word p_memsz; /* Segment size in memory */
492 Elf64_Word p_align; /* Segment alignment, file & memory */
497 #define SHT_PROGBITS 1
502 #define SHT_DYNAMIC 6
507 #define SHT_DYNSYM 11
509 #define SHT_LOPROC 0x70000000
510 #define SHT_HIPROC 0x7fffffff
511 #define SHT_LOUSER 0x80000000
512 #define SHT_HIUSER 0xffffffff
513 #define SHT_MIPS_LIST 0x70000000
514 #define SHT_MIPS_CONFLICT 0x70000002
515 #define SHT_MIPS_GPTAB 0x70000003
516 #define SHT_MIPS_UCODE 0x70000004
519 #define SHF_WRITE 0x1
520 #define SHF_ALLOC 0x2
521 #define SHF_EXECINSTR 0x4
522 #define SHF_MASKPROC 0xf0000000
523 #define SHF_MIPS_GPREL 0x10000000
525 /* special section indexes */
527 #define SHN_LORESERVE 0xff00
528 #define SHN_LOPROC 0xff00
529 #define SHN_HIPROC 0xff1f
530 #define SHN_ABS 0xfff1
531 #define SHN_COMMON 0xfff2
532 #define SHN_HIRESERVE 0xffff
533 #define SHN_MIPS_ACCOMON 0xff00
544 Elf32_Word sh_addralign;
545 Elf32_Word sh_entsize;
548 typedef struct elf64_shdr {
549 Elf32_Word sh_name; /* Section name, index in string tbl (yes Elf32) */
550 Elf32_Word sh_type; /* Type of section (yes Elf32) */
551 Elf64_Word sh_flags; /* Miscellaneous section attributes */
552 Elf64_Addr sh_addr; /* Section virtual addr at execution */
553 Elf64_Off sh_offset; /* Section file offset */
554 Elf64_Word sh_size; /* Size of section in bytes */
555 Elf32_Word sh_link; /* Index of another section (yes Elf32) */
556 Elf32_Word sh_info; /* Additional section information (yes Elf32) */
557 Elf64_Word sh_addralign; /* Section alignment */
558 Elf64_Word sh_entsize; /* Entry size if section holds table */
561 #define EI_MAG0 0 /* e_ident[] indexes */
570 #define ELFMAG0 0x7f /* EI_MAG */
574 #define ELFMAG "\177ELF"
577 #define ELFCLASSNONE 0 /* EI_CLASS */
580 #define ELFCLASSNUM 3
582 #define ELFDATANONE 0 /* e_ident[EI_DATA] */
583 #define ELFDATA2LSB 1
584 #define ELFDATA2MSB 2
586 #define EV_NONE 0 /* e_version, EI_VERSION */
590 /* Notes used in ET_CORE */
591 #define NT_PRSTATUS 1
593 #define NT_PRPSINFO 3
594 #define NT_TASKSTRUCT 4
596 /* Note header in a PT_NOTE section */
597 typedef struct elf32_note {
598 Elf32_Word n_namesz; /* Name size */
599 Elf32_Word n_descsz; /* Content size */
600 Elf32_Word n_type; /* Content type */
603 /* Note header in a PT_NOTE section */
605 * For now we use the 32 bit version of the structure until we figure
606 * out whether we need anything better. Note - on the Alpha, "unsigned int"
609 typedef struct elf64_note {
610 Elf32_Word n_namesz; /* Name size */
611 Elf32_Word n_descsz; /* Content size */
612 Elf32_Word n_type; /* Content type */
615 #if ELF_CLASS == ELFCLASS32
617 extern Elf32_Dyn _DYNAMIC [];
618 #define elfhdr elf32_hdr
619 #define elf_phdr elf32_phdr
620 #define elf_note elf32_note
624 extern Elf64_Dyn _DYNAMIC [];
625 #define elfhdr elf64_hdr
626 #define elf_phdr elf64_phdr
627 #define elf_note elf64_note
632 #endif /* __LINUX_ELF_H__ */