Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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
123#define SHF_MIPS_GPREL 0x10000000
124
125#ifndef ELF_ARCH
126/* ELF register definitions */
127#define ELF_NGREG 45
128#define ELF_NFPREG 33
129
130typedef unsigned long elf_greg_t;
131typedef elf_greg_t elf_gregset_t[ELF_NGREG];
132
133typedef double elf_fpreg_t;
134typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
135
136#ifdef CONFIG_32BIT
137
138/*
139 * This is used to ensure we don't load something for the wrong architecture.
140 */
141#define elf_check_arch(hdr) \
142({ \
143 int __res = 1; \
144 struct elfhdr *__h = (hdr); \
145 \
146 if (__h->e_machine != EM_MIPS) \
147 __res = 0; \
148 if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
149 __res = 0; \
150 if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
151 __res = 0; \
152 if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
153 ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
154 __res = 0; \
155 \
156 __res; \
157})
158
159/*
160 * These are used to set parameters in the core dumps.
161 */
162#define ELF_CLASS ELFCLASS32
163
164#endif /* CONFIG_32BIT */
165
166#ifdef CONFIG_64BIT
167/*
168 * This is used to ensure we don't load something for the wrong architecture.
169 */
170#define elf_check_arch(hdr) \
171({ \
172 int __res = 1; \
173 struct elfhdr *__h = (hdr); \
174 \
175 if (__h->e_machine != EM_MIPS) \
176 __res = 0; \
177 if (__h->e_ident[EI_CLASS] != ELFCLASS64) \
178 __res = 0; \
179 \
180 __res; \
181})
182
183/*
184 * These are used to set parameters in the core dumps.
185 */
186#define ELF_CLASS ELFCLASS64
187
188#endif /* CONFIG_64BIT */
189
190/*
191 * These are used to set parameters in the core dumps.
192 */
193#ifdef __MIPSEB__
194#define ELF_DATA ELFDATA2MSB
195#elif __MIPSEL__
196#define ELF_DATA ELFDATA2LSB
197#endif
198#define ELF_ARCH EM_MIPS
199
200#endif /* !defined(ELF_ARCH) */
201
202#ifdef __KERNEL__
203
204struct mips_abi;
205
206extern struct mips_abi mips_abi;
207extern struct mips_abi mips_abi_32;
208extern struct mips_abi mips_abi_n32;
209
210#ifdef CONFIG_32BIT
211
212#define SET_PERSONALITY(ex, ibcs2) \
213do { \
214 if (ibcs2) \
215 set_personality(PER_SVR4); \
216 set_personality(PER_LINUX); \
217 \
218 current->thread.abi = &mips_abi; \
219} while (0)
220
221#endif /* CONFIG_32BIT */
222
223#ifdef CONFIG_64BIT
224
225#ifdef CONFIG_MIPS32_N32
226#define __SET_PERSONALITY32_N32() \
227 do { \
228 current->thread.mflags |= MF_N32; \
229 current->thread.abi = &mips_abi_n32; \
230 } while (0)
231#else
232#define __SET_PERSONALITY32_N32() \
233 do { } while (0)
234#endif
235
236#ifdef CONFIG_MIPS32_O32
237#define __SET_PERSONALITY32_O32() \
238 do { \
239 current->thread.mflags |= MF_O32; \
240 current->thread.abi = &mips_abi_32; \
241 } while (0)
242#else
243#define __SET_PERSONALITY32_O32() \
244 do { } while (0)
245#endif
246
247#ifdef CONFIG_MIPS32_COMPAT
248#define __SET_PERSONALITY32(ex) \
249do { \
250 if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
251 ((ex).e_flags & EF_MIPS_ABI) == 0) \
252 __SET_PERSONALITY32_N32(); \
253 else \
254 __SET_PERSONALITY32_O32(); \
255} while (0)
256#else
257#define __SET_PERSONALITY32(ex) do { } while (0)
258#endif
259
260#define SET_PERSONALITY(ex, ibcs2) \
261do { \
262 current->thread.mflags &= ~MF_ABI_MASK; \
263 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
264 __SET_PERSONALITY32(ex); \
265 else { \
266 current->thread.mflags |= MF_N64; \
267 current->thread.abi = &mips_abi; \
268 } \
269 \
270 if (ibcs2) \
271 set_personality(PER_SVR4); \
272 else if (current->personality != PER_LINUX32) \
273 set_personality(PER_LINUX); \
274} while (0)
275
276#endif /* CONFIG_64BIT */
277
278struct task_struct;
279
280extern void dump_regs(elf_greg_t *, struct pt_regs *regs);
281extern int dump_task_regs (struct task_struct *, elf_gregset_t *);
282extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
283
284#define ELF_CORE_COPY_REGS(elf_regs, regs) \
285 dump_regs((elf_greg_t *)&(elf_regs), regs);
286#define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
287#define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs) \
288 dump_task_fpu(tsk, elf_fpregs)
289
290#endif /* __KERNEL__ */
291
292#define USE_ELF_CORE_DUMP
293#define ELF_EXEC_PAGESIZE PAGE_SIZE
294
295/* This yields a mask that user programs can use to figure out what
296 instruction set this cpu supports. This could be done in userspace,
297 but it's not easy, and we've already done it here. */
298
299#define ELF_HWCAP (0)
300
301/* This yields a string that ld.so will use to load implementation
302 specific libraries for optimization. This is more specific in
303 intent than poking at uname or /proc/cpuinfo.
304
305 For the moment, we have only optimizations for the Intel generations,
306 but that could change... */
307
308#define ELF_PLATFORM (NULL)
309
310/*
311 * See comments in asm-alpha/elf.h, this is the same thing
312 * on the MIPS.
313 */
314#define ELF_PLAT_INIT(_r, load_addr) do { \
315 _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
316 _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
317 _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
318 _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
319 _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
320 _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
321 _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
322 _r->regs[30] = _r->regs[31] = 0; \
323} while (0)
324
325/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
326 use of this is to invoke "./ld.so someprog" to test out a new version of
327 the loader. We need to make sure that it is out of the way of the program
328 that it will "exec", and that there is sufficient room for the brk. */
329
330#ifndef ELF_ET_DYN_BASE
331#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
332#endif
333
334#endif /* _ASM_ELF_H */