Linux kernel mirror (for testing)
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linux
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Much of this is taken from binutils and GNU libc ...
7 */
8#ifndef _ASM_ELF_H
9#define _ASM_ELF_H
10
11#include <linux/config.h>
12
13/* ELF header e_flags defines. */
14/* MIPS architecture level. */
15#define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
16#define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
17#define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
18#define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
19#define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
20#define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */
21#define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
22#define EF_MIPS_ARCH_32R2 0x70000000 /* MIPS32 R2 code. */
23#define EF_MIPS_ARCH_64R2 0x80000000 /* MIPS64 R2 code. */
24
25/* The ABI of a file. */
26#define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
27#define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
28
29#define PT_MIPS_REGINFO 0x70000000
30#define PT_MIPS_RTPROC 0x70000001
31#define PT_MIPS_OPTIONS 0x70000002
32
33/* Flags in the e_flags field of the header */
34#define EF_MIPS_NOREORDER 0x00000001
35#define EF_MIPS_PIC 0x00000002
36#define EF_MIPS_CPIC 0x00000004
37#define EF_MIPS_ABI2 0x00000020
38#define EF_MIPS_OPTIONS_FIRST 0x00000080
39#define EF_MIPS_32BITMODE 0x00000100
40#define EF_MIPS_ABI 0x0000f000
41#define EF_MIPS_ARCH 0xf0000000
42
43#define DT_MIPS_RLD_VERSION 0x70000001
44#define DT_MIPS_TIME_STAMP 0x70000002
45#define DT_MIPS_ICHECKSUM 0x70000003
46#define DT_MIPS_IVERSION 0x70000004
47#define DT_MIPS_FLAGS 0x70000005
48 #define RHF_NONE 0x00000000
49 #define RHF_HARDWAY 0x00000001
50 #define RHF_NOTPOT 0x00000002
51 #define RHF_SGI_ONLY 0x00000010
52#define DT_MIPS_BASE_ADDRESS 0x70000006
53#define DT_MIPS_CONFLICT 0x70000008
54#define DT_MIPS_LIBLIST 0x70000009
55#define DT_MIPS_LOCAL_GOTNO 0x7000000a
56#define DT_MIPS_CONFLICTNO 0x7000000b
57#define DT_MIPS_LIBLISTNO 0x70000010
58#define DT_MIPS_SYMTABNO 0x70000011
59#define DT_MIPS_UNREFEXTNO 0x70000012
60#define DT_MIPS_GOTSYM 0x70000013
61#define DT_MIPS_HIPAGENO 0x70000014
62#define DT_MIPS_RLD_MAP 0x70000016
63
64#define R_MIPS_NONE 0
65#define R_MIPS_16 1
66#define R_MIPS_32 2
67#define R_MIPS_REL32 3
68#define R_MIPS_26 4
69#define R_MIPS_HI16 5
70#define R_MIPS_LO16 6
71#define R_MIPS_GPREL16 7
72#define R_MIPS_LITERAL 8
73#define R_MIPS_GOT16 9
74#define R_MIPS_PC16 10
75#define R_MIPS_CALL16 11
76#define R_MIPS_GPREL32 12
77/* The remaining relocs are defined on Irix, although they are not
78 in the MIPS ELF ABI. */
79#define R_MIPS_UNUSED1 13
80#define R_MIPS_UNUSED2 14
81#define R_MIPS_UNUSED3 15
82#define R_MIPS_SHIFT5 16
83#define R_MIPS_SHIFT6 17
84#define R_MIPS_64 18
85#define R_MIPS_GOT_DISP 19
86#define R_MIPS_GOT_PAGE 20
87#define R_MIPS_GOT_OFST 21
88/*
89 * The following two relocation types are specified in the MIPS ABI
90 * conformance guide version 1.2 but not yet in the psABI.
91 */
92#define R_MIPS_GOTHI16 22
93#define R_MIPS_GOTLO16 23
94#define R_MIPS_SUB 24
95#define R_MIPS_INSERT_A 25
96#define R_MIPS_INSERT_B 26
97#define R_MIPS_DELETE 27
98#define R_MIPS_HIGHER 28
99#define R_MIPS_HIGHEST 29
100/*
101 * The following two relocation types are specified in the MIPS ABI
102 * conformance guide version 1.2 but not yet in the psABI.
103 */
104#define R_MIPS_CALLHI16 30
105#define R_MIPS_CALLLO16 31
106/*
107 * This range is reserved for vendor specific relocations.
108 */
109#define R_MIPS_LOVENDOR 100
110#define R_MIPS_HIVENDOR 127
111
112#define SHN_MIPS_ACCOMON 0xff00 /* Allocated common symbols */
113#define SHN_MIPS_TEXT 0xff01 /* Allocated test symbols. */
114#define SHN_MIPS_DATA 0xff02 /* Allocated data symbols. */
115#define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
116#define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
117
118#define SHT_MIPS_LIST 0x70000000
119#define SHT_MIPS_CONFLICT 0x70000002
120#define SHT_MIPS_GPTAB 0x70000003
121#define SHT_MIPS_UCODE 0x70000004
122#define SHT_MIPS_DEBUG 0x70000005
123#define SHT_MIPS_REGINFO 0x70000006
124#define SHT_MIPS_PACKAGE 0x70000007
125#define SHT_MIPS_PACKSYM 0x70000008
126#define SHT_MIPS_RELD 0x70000009
127#define SHT_MIPS_IFACE 0x7000000b
128#define SHT_MIPS_CONTENT 0x7000000c
129#define SHT_MIPS_OPTIONS 0x7000000d
130#define SHT_MIPS_SHDR 0x70000010
131#define SHT_MIPS_FDESC 0x70000011
132#define SHT_MIPS_EXTSYM 0x70000012
133#define SHT_MIPS_DENSE 0x70000013
134#define SHT_MIPS_PDESC 0x70000014
135#define SHT_MIPS_LOCSYM 0x70000015
136#define SHT_MIPS_AUXSYM 0x70000016
137#define SHT_MIPS_OPTSYM 0x70000017
138#define SHT_MIPS_LOCSTR 0x70000018
139#define SHT_MIPS_LINE 0x70000019
140#define SHT_MIPS_RFDESC 0x7000001a
141#define SHT_MIPS_DELTASYM 0x7000001b
142#define SHT_MIPS_DELTAINST 0x7000001c
143#define SHT_MIPS_DELTACLASS 0x7000001d
144#define SHT_MIPS_DWARF 0x7000001e
145#define SHT_MIPS_DELTADECL 0x7000001f
146#define SHT_MIPS_SYMBOL_LIB 0x70000020
147#define SHT_MIPS_EVENTS 0x70000021
148#define SHT_MIPS_TRANSLATE 0x70000022
149#define SHT_MIPS_PIXIE 0x70000023
150#define SHT_MIPS_XLATE 0x70000024
151#define SHT_MIPS_XLATE_DEBUG 0x70000025
152#define SHT_MIPS_WHIRL 0x70000026
153#define SHT_MIPS_EH_REGION 0x70000027
154#define SHT_MIPS_XLATE_OLD 0x70000028
155#define SHT_MIPS_PDR_EXCEPTION 0x70000029
156
157#define SHF_MIPS_GPREL 0x10000000
158#define SHF_MIPS_MERGE 0x20000000
159#define SHF_MIPS_ADDR 0x40000000
160#define SHF_MIPS_STRING 0x80000000
161#define SHF_MIPS_NOSTRIP 0x08000000
162#define SHF_MIPS_LOCAL 0x04000000
163#define SHF_MIPS_NAMES 0x02000000
164#define SHF_MIPS_NODUPES 0x01000000
165
166#ifndef ELF_ARCH
167/* ELF register definitions */
168#define ELF_NGREG 45
169#define ELF_NFPREG 33
170
171typedef unsigned long elf_greg_t;
172typedef elf_greg_t elf_gregset_t[ELF_NGREG];
173
174typedef double elf_fpreg_t;
175typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
176
177#ifdef CONFIG_32BIT
178
179/*
180 * This is used to ensure we don't load something for the wrong architecture.
181 */
182#define elf_check_arch(hdr) \
183({ \
184 int __res = 1; \
185 struct elfhdr *__h = (hdr); \
186 \
187 if (__h->e_machine != EM_MIPS) \
188 __res = 0; \
189 if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
190 __res = 0; \
191 if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
192 __res = 0; \
193 if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
194 ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
195 __res = 0; \
196 \
197 __res; \
198})
199
200/*
201 * These are used to set parameters in the core dumps.
202 */
203#define ELF_CLASS ELFCLASS32
204
205#endif /* CONFIG_32BIT */
206
207#ifdef CONFIG_64BIT
208/*
209 * This is used to ensure we don't load something for the wrong architecture.
210 */
211#define elf_check_arch(hdr) \
212({ \
213 int __res = 1; \
214 struct elfhdr *__h = (hdr); \
215 \
216 if (__h->e_machine != EM_MIPS) \
217 __res = 0; \
218 if (__h->e_ident[EI_CLASS] != ELFCLASS64) \
219 __res = 0; \
220 \
221 __res; \
222})
223
224/*
225 * These are used to set parameters in the core dumps.
226 */
227#define ELF_CLASS ELFCLASS64
228
229#endif /* CONFIG_64BIT */
230
231/*
232 * These are used to set parameters in the core dumps.
233 */
234#ifdef __MIPSEB__
235#define ELF_DATA ELFDATA2MSB
236#elif __MIPSEL__
237#define ELF_DATA ELFDATA2LSB
238#endif
239#define ELF_ARCH EM_MIPS
240
241#endif /* !defined(ELF_ARCH) */
242
243#ifdef __KERNEL__
244
245struct mips_abi;
246
247extern struct mips_abi mips_abi;
248extern struct mips_abi mips_abi_32;
249extern struct mips_abi mips_abi_n32;
250
251#ifdef CONFIG_32BIT
252
253#define SET_PERSONALITY(ex, ibcs2) \
254do { \
255 if (ibcs2) \
256 set_personality(PER_SVR4); \
257 set_personality(PER_LINUX); \
258 \
259 current->thread.abi = &mips_abi; \
260} while (0)
261
262#endif /* CONFIG_32BIT */
263
264#ifdef CONFIG_64BIT
265
266#ifdef CONFIG_MIPS32_N32
267#define __SET_PERSONALITY32_N32() \
268 do { \
269 current->thread.mflags |= MF_N32; \
270 current->thread.abi = &mips_abi_n32; \
271 } while (0)
272#else
273#define __SET_PERSONALITY32_N32() \
274 do { } while (0)
275#endif
276
277#ifdef CONFIG_MIPS32_O32
278#define __SET_PERSONALITY32_O32() \
279 do { \
280 current->thread.mflags |= MF_O32; \
281 current->thread.abi = &mips_abi_32; \
282 } while (0)
283#else
284#define __SET_PERSONALITY32_O32() \
285 do { } while (0)
286#endif
287
288#ifdef CONFIG_MIPS32_COMPAT
289#define __SET_PERSONALITY32(ex) \
290do { \
291 if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
292 ((ex).e_flags & EF_MIPS_ABI) == 0) \
293 __SET_PERSONALITY32_N32(); \
294 else \
295 __SET_PERSONALITY32_O32(); \
296} while (0)
297#else
298#define __SET_PERSONALITY32(ex) do { } while (0)
299#endif
300
301#define SET_PERSONALITY(ex, ibcs2) \
302do { \
303 current->thread.mflags &= ~MF_ABI_MASK; \
304 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
305 __SET_PERSONALITY32(ex); \
306 else { \
307 current->thread.mflags |= MF_N64; \
308 current->thread.abi = &mips_abi; \
309 } \
310 \
311 if (ibcs2) \
312 set_personality(PER_SVR4); \
313 else if (current->personality != PER_LINUX32) \
314 set_personality(PER_LINUX); \
315} while (0)
316
317#endif /* CONFIG_64BIT */
318
319struct task_struct;
320
321extern void elf_dump_regs(elf_greg_t *, struct pt_regs *regs);
322extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
323extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
324
325#define ELF_CORE_COPY_REGS(elf_regs, regs) \
326 elf_dump_regs((elf_greg_t *)&(elf_regs), regs);
327#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
328#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) \
329 dump_task_fpu(tsk, elf_fpregs)
330
331#endif /* __KERNEL__ */
332
333#define USE_ELF_CORE_DUMP
334#define ELF_EXEC_PAGESIZE PAGE_SIZE
335
336/* This yields a mask that user programs can use to figure out what
337 instruction set this cpu supports. This could be done in userspace,
338 but it's not easy, and we've already done it here. */
339
340#define ELF_HWCAP (0)
341
342/* This yields a string that ld.so will use to load implementation
343 specific libraries for optimization. This is more specific in
344 intent than poking at uname or /proc/cpuinfo.
345
346 For the moment, we have only optimizations for the Intel generations,
347 but that could change... */
348
349#define ELF_PLATFORM (NULL)
350
351/*
352 * See comments in asm-alpha/elf.h, this is the same thing
353 * on the MIPS.
354 */
355#define ELF_PLAT_INIT(_r, load_addr) do { \
356 _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
357 _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
358 _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
359 _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
360 _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
361 _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
362 _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
363 _r->regs[30] = _r->regs[31] = 0; \
364} while (0)
365
366/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
367 use of this is to invoke "./ld.so someprog" to test out a new version of
368 the loader. We need to make sure that it is out of the way of the program
369 that it will "exec", and that there is sufficient room for the brk. */
370
371#ifndef ELF_ET_DYN_BASE
372#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
373#endif
374
375#endif /* _ASM_ELF_H */