summaryrefslogtreecommitdiff
path: root/include/asm-mips/elf.h
blob: a4db9ec956656c6ac5af3569b1a5e07120c54bf1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
/*
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#ifndef _ASM_ELF_H
#define _ASM_ELF_H

#include <linux/config.h>

/* ELF header e_flags defines. */
/* MIPS architecture level. */
#define EF_MIPS_ARCH_1		0x00000000	/* -mips1 code.  */
#define EF_MIPS_ARCH_2		0x10000000	/* -mips2 code.  */
#define EF_MIPS_ARCH_3		0x20000000	/* -mips3 code.  */
#define EF_MIPS_ARCH_4		0x30000000	/* -mips4 code.  */
#define EF_MIPS_ARCH_5		0x40000000	/* -mips5 code.  */
#define EF_MIPS_ARCH_32		0x50000000	/* MIPS32 code.  */
#define EF_MIPS_ARCH_64		0x60000000	/* MIPS64 code.  */

/* The ABI of a file. */
#define EF_MIPS_ABI_O32		0x00001000	/* O32 ABI.  */
#define EF_MIPS_ABI_O64		0x00002000	/* O32 extended for 64 bit.  */

#define PT_MIPS_REGINFO		0x70000000
#define PT_MIPS_RTPROC		0x70000001
#define PT_MIPS_OPTIONS		0x70000002

/* Flags in the e_flags field of the header */
#define EF_MIPS_NOREORDER	0x00000001
#define EF_MIPS_PIC		0x00000002
#define EF_MIPS_CPIC		0x00000004
#define EF_MIPS_ABI2		0x00000020
#define EF_MIPS_OPTIONS_FIRST	0x00000080
#define EF_MIPS_32BITMODE	0x00000100
#define EF_MIPS_ABI		0x0000f000
#define EF_MIPS_ARCH		0xf0000000

#define DT_MIPS_RLD_VERSION	0x70000001
#define DT_MIPS_TIME_STAMP	0x70000002
#define DT_MIPS_ICHECKSUM	0x70000003
#define DT_MIPS_IVERSION	0x70000004
#define DT_MIPS_FLAGS		0x70000005
	#define RHF_NONE	0x00000000
	#define RHF_HARDWAY	0x00000001
	#define RHF_NOTPOT	0x00000002
	#define RHF_SGI_ONLY	0x00000010
#define DT_MIPS_BASE_ADDRESS	0x70000006
#define DT_MIPS_CONFLICT	0x70000008
#define DT_MIPS_LIBLIST		0x70000009
#define DT_MIPS_LOCAL_GOTNO	0x7000000a
#define DT_MIPS_CONFLICTNO	0x7000000b
#define DT_MIPS_LIBLISTNO	0x70000010
#define DT_MIPS_SYMTABNO	0x70000011
#define DT_MIPS_UNREFEXTNO	0x70000012
#define DT_MIPS_GOTSYM		0x70000013
#define DT_MIPS_HIPAGENO	0x70000014
#define DT_MIPS_RLD_MAP		0x70000016

#define R_MIPS_NONE		0
#define R_MIPS_16		1
#define R_MIPS_32		2
#define R_MIPS_REL32		3
#define R_MIPS_26		4
#define R_MIPS_HI16		5
#define R_MIPS_LO16		6
#define R_MIPS_GPREL16		7
#define R_MIPS_LITERAL		8
#define R_MIPS_GOT16		9
#define R_MIPS_PC16		10
#define R_MIPS_CALL16		11
#define R_MIPS_GPREL32		12
/* The remaining relocs are defined on Irix, although they are not
   in the MIPS ELF ABI.  */
#define R_MIPS_UNUSED1		13
#define R_MIPS_UNUSED2		14
#define R_MIPS_UNUSED3		15
#define R_MIPS_SHIFT5		16
#define R_MIPS_SHIFT6		17
#define R_MIPS_64		18
#define R_MIPS_GOT_DISP		19
#define R_MIPS_GOT_PAGE		20
#define R_MIPS_GOT_OFST		21
/*
 * The following two relocation types are specified in the MIPS ABI
 * conformance guide version 1.2 but not yet in the psABI.
 */
#define R_MIPS_GOTHI16		22
#define R_MIPS_GOTLO16		23
#define R_MIPS_SUB		24
#define R_MIPS_INSERT_A		25
#define R_MIPS_INSERT_B		26
#define R_MIPS_DELETE		27
#define R_MIPS_HIGHER		28
#define R_MIPS_HIGHEST		29
/*
 * The following two relocation types are specified in the MIPS ABI
 * conformance guide version 1.2 but not yet in the psABI.
 */
#define R_MIPS_CALLHI16		30
#define R_MIPS_CALLLO16		31
/*
 * This range is reserved for vendor specific relocations.
 */
#define R_MIPS_LOVENDOR		100
#define R_MIPS_HIVENDOR		127

#define SHN_MIPS_ACCOMON	0xff00

#define SHT_MIPS_LIST		0x70000000
#define SHT_MIPS_CONFLICT	0x70000002
#define SHT_MIPS_GPTAB		0x70000003
#define SHT_MIPS_UCODE		0x70000004

#define SHF_MIPS_GPREL	0x10000000

#ifndef ELF_ARCH
/* ELF register definitions */
#define ELF_NGREG	45
#define ELF_NFPREG	33

typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef double elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

#ifdef CONFIG_32BIT

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(hdr)						\
({									\
	int __res = 1;							\
	struct elfhdr *__h = (hdr);					\
									\
	if (__h->e_machine != EM_MIPS)					\
		__res = 0;						\
	if (__h->e_ident[EI_CLASS] != ELFCLASS32)			\
		__res = 0;						\
	if ((__h->e_flags & EF_MIPS_ABI2) != 0)				\
		__res = 0;						\
	if (((__h->e_flags & EF_MIPS_ABI) != 0) &&			\
	    ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))		\
		__res = 0;						\
									\
	__res;								\
})

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS32

#endif /* CONFIG_32BIT */

#ifdef CONFIG_64BIT
/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch(hdr)						\
({									\
	int __res = 1;							\
	struct elfhdr *__h = (hdr);					\
									\
	if (__h->e_machine != EM_MIPS)					\
		__res = 0;						\
	if (__h->e_ident[EI_CLASS] != ELFCLASS64) 			\
		__res = 0;						\
									\
	__res;								\
})

/*
 * These are used to set parameters in the core dumps.
 */
#define ELF_CLASS	ELFCLASS64

#endif /* CONFIG_64BIT */

/*
 * These are used to set parameters in the core dumps.
 */
#ifdef __MIPSEB__
#define ELF_DATA	ELFDATA2MSB
#elif __MIPSEL__
#define ELF_DATA	ELFDATA2LSB
#endif
#define ELF_ARCH	EM_MIPS

#endif /* !defined(ELF_ARCH) */

#ifdef __KERNEL__

struct mips_abi;

extern struct mips_abi mips_abi;
extern struct mips_abi mips_abi_32;
extern struct mips_abi mips_abi_n32;

#ifdef CONFIG_32BIT

#define SET_PERSONALITY(ex, ibcs2)					\
do {									\
	if (ibcs2)							\
		set_personality(PER_SVR4);				\
	set_personality(PER_LINUX);					\
									\
	current->thread.abi = &mips_abi;				\
} while (0)

#endif /* CONFIG_32BIT */

#ifdef CONFIG_64BIT

#ifdef CONFIG_MIPS32_N32
#define __SET_PERSONALITY32_N32()					\
	do {								\
		current->thread.mflags |= MF_N32;			\
		current->thread.abi = &mips_abi_n32;			\
	} while (0)
#else
#define __SET_PERSONALITY32_N32()					\
	do { } while (0)
#endif

#ifdef CONFIG_MIPS32_O32
#define __SET_PERSONALITY32_O32()					\
	do {								\
		current->thread.mflags |= MF_O32;			\
		current->thread.abi = &mips_abi_32;			\
	} while (0)
#else
#define __SET_PERSONALITY32_O32()					\
	do { } while (0)
#endif

#ifdef CONFIG_MIPS32_COMPAT
#define __SET_PERSONALITY32(ex)						\
do {									\
	if ((((ex).e_flags & EF_MIPS_ABI2) != 0) &&			\
	     ((ex).e_flags & EF_MIPS_ABI) == 0)				\
		__SET_PERSONALITY32_N32();				\
	else								\
		__SET_PERSONALITY32_O32();				\
} while (0)
#else
#define __SET_PERSONALITY32(ex)	do { } while (0)
#endif

#define SET_PERSONALITY(ex, ibcs2)					\
do {									\
	current->thread.mflags &= ~MF_ABI_MASK;				\
	if ((ex).e_ident[EI_CLASS] == ELFCLASS32)			\
		__SET_PERSONALITY32(ex);				\
	else {								\
		current->thread.mflags |= MF_N64;			\
		current->thread.abi = &mips_abi;			\
	}								\
									\
	if (ibcs2)							\
		set_personality(PER_SVR4);				\
	else if (current->personality != PER_LINUX32)			\
		set_personality(PER_LINUX);				\
} while (0)

#endif /* CONFIG_64BIT */

extern void dump_regs(elf_greg_t *, struct pt_regs *regs);
extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);

#define ELF_CORE_COPY_REGS(elf_regs, regs)			\
	dump_regs((elf_greg_t *)&(elf_regs), regs);
#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs)			\
	dump_task_fpu(tsk, elf_fpregs)

#endif /* __KERNEL__ */

#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE	PAGE_SIZE

/* This yields a mask that user programs can use to figure out what
   instruction set this cpu supports.  This could be done in userspace,
   but it's not easy, and we've already done it here.  */

#define ELF_HWCAP       (0)

/* This yields a string that ld.so will use to load implementation
   specific libraries for optimization.  This is more specific in
   intent than poking at uname or /proc/cpuinfo.

   For the moment, we have only optimizations for the Intel generations,
   but that could change... */

#define ELF_PLATFORM  (NULL)

/*
 * See comments in asm-alpha/elf.h, this is the same thing
 * on the MIPS.
 */
#define ELF_PLAT_INIT(_r, load_addr)	do { \
	_r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0;	\
	_r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0;	\
	_r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0;	\
	_r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0;	\
	_r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0;	\
	_r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0;	\
	_r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0;	\
	_r->regs[30] = _r->regs[31] = 0;				\
} while (0)

/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
   use of this is to invoke "./ld.so someprog" to test out a new version of
   the loader.  We need to make sure that it is out of the way of the program
   that it will "exec", and that there is sufficient room for the brk.  */

#ifndef ELF_ET_DYN_BASE
#define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
#endif

#endif /* _ASM_ELF_H */