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TOMOYO Linux Cross Reference
Linux/arch/mips/include/asm/elf.h

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  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 
 12 /* ELF header e_flags defines. */
 13 /* MIPS architecture level. */
 14 #define EF_MIPS_ARCH_1          0x00000000      /* -mips1 code.  */
 15 #define EF_MIPS_ARCH_2          0x10000000      /* -mips2 code.  */
 16 #define EF_MIPS_ARCH_3          0x20000000      /* -mips3 code.  */
 17 #define EF_MIPS_ARCH_4          0x30000000      /* -mips4 code.  */
 18 #define EF_MIPS_ARCH_5          0x40000000      /* -mips5 code.  */
 19 #define EF_MIPS_ARCH_32         0x50000000      /* MIPS32 code.  */
 20 #define EF_MIPS_ARCH_64         0x60000000      /* MIPS64 code.  */
 21 #define EF_MIPS_ARCH_32R2       0x70000000      /* MIPS32 R2 code.  */
 22 #define EF_MIPS_ARCH_64R2       0x80000000      /* MIPS64 R2 code.  */
 23 
 24 /* The ABI of a file. */
 25 #define EF_MIPS_ABI_O32         0x00001000      /* O32 ABI.  */
 26 #define EF_MIPS_ABI_O64         0x00002000      /* O32 extended for 64 bit.  */
 27 
 28 #define PT_MIPS_REGINFO         0x70000000
 29 #define PT_MIPS_RTPROC          0x70000001
 30 #define PT_MIPS_OPTIONS         0x70000002
 31 
 32 /* Flags in the e_flags field of the header */
 33 #define EF_MIPS_NOREORDER       0x00000001
 34 #define EF_MIPS_PIC             0x00000002
 35 #define EF_MIPS_CPIC            0x00000004
 36 #define EF_MIPS_ABI2            0x00000020
 37 #define EF_MIPS_OPTIONS_FIRST   0x00000080
 38 #define EF_MIPS_32BITMODE       0x00000100
 39 #define EF_MIPS_ABI             0x0000f000
 40 #define EF_MIPS_ARCH            0xf0000000
 41 
 42 #define DT_MIPS_RLD_VERSION     0x70000001
 43 #define DT_MIPS_TIME_STAMP      0x70000002
 44 #define DT_MIPS_ICHECKSUM       0x70000003
 45 #define DT_MIPS_IVERSION        0x70000004
 46 #define DT_MIPS_FLAGS           0x70000005
 47         #define RHF_NONE        0x00000000
 48         #define RHF_HARDWAY     0x00000001
 49         #define RHF_NOTPOT      0x00000002
 50         #define RHF_SGI_ONLY    0x00000010
 51 #define DT_MIPS_BASE_ADDRESS    0x70000006
 52 #define DT_MIPS_CONFLICT        0x70000008
 53 #define DT_MIPS_LIBLIST         0x70000009
 54 #define DT_MIPS_LOCAL_GOTNO     0x7000000a
 55 #define DT_MIPS_CONFLICTNO      0x7000000b
 56 #define DT_MIPS_LIBLISTNO       0x70000010
 57 #define DT_MIPS_SYMTABNO        0x70000011
 58 #define DT_MIPS_UNREFEXTNO      0x70000012
 59 #define DT_MIPS_GOTSYM          0x70000013
 60 #define DT_MIPS_HIPAGENO        0x70000014
 61 #define DT_MIPS_RLD_MAP         0x70000016
 62 
 63 #define R_MIPS_NONE             0
 64 #define R_MIPS_16               1
 65 #define R_MIPS_32               2
 66 #define R_MIPS_REL32            3
 67 #define R_MIPS_26               4
 68 #define R_MIPS_HI16             5
 69 #define R_MIPS_LO16             6
 70 #define R_MIPS_GPREL16          7
 71 #define R_MIPS_LITERAL          8
 72 #define R_MIPS_GOT16            9
 73 #define R_MIPS_PC16             10
 74 #define R_MIPS_CALL16           11
 75 #define R_MIPS_GPREL32          12
 76 /* The remaining relocs are defined on Irix, although they are not
 77    in the MIPS ELF ABI.  */
 78 #define R_MIPS_UNUSED1          13
 79 #define R_MIPS_UNUSED2          14
 80 #define R_MIPS_UNUSED3          15
 81 #define R_MIPS_SHIFT5           16
 82 #define R_MIPS_SHIFT6           17
 83 #define R_MIPS_64               18
 84 #define R_MIPS_GOT_DISP         19
 85 #define R_MIPS_GOT_PAGE         20
 86 #define R_MIPS_GOT_OFST         21
 87 /*
 88  * The following two relocation types are specified in the MIPS ABI
 89  * conformance guide version 1.2 but not yet in the psABI.
 90  */
 91 #define R_MIPS_GOTHI16          22
 92 #define R_MIPS_GOTLO16          23
 93 #define R_MIPS_SUB              24
 94 #define R_MIPS_INSERT_A         25
 95 #define R_MIPS_INSERT_B         26
 96 #define R_MIPS_DELETE           27
 97 #define R_MIPS_HIGHER           28
 98 #define R_MIPS_HIGHEST          29
 99 /*
100  * The following two relocation types are specified in the MIPS ABI
101  * conformance guide version 1.2 but not yet in the psABI.
102  */
103 #define R_MIPS_CALLHI16         30
104 #define R_MIPS_CALLLO16         31
105 /*
106  * This range is reserved for vendor specific relocations.
107  */
108 #define R_MIPS_LOVENDOR         100
109 #define R_MIPS_HIVENDOR         127
110 
111 #define SHN_MIPS_ACCOMON        0xff00          /* Allocated common symbols */
112 #define SHN_MIPS_TEXT           0xff01          /* Allocated test symbols.  */
113 #define SHN_MIPS_DATA           0xff02          /* Allocated data symbols.  */
114 #define SHN_MIPS_SCOMMON        0xff03          /* Small common symbols */
115 #define SHN_MIPS_SUNDEFINED     0xff04          /* Small undefined symbols */
116 
117 #define SHT_MIPS_LIST           0x70000000
118 #define SHT_MIPS_CONFLICT       0x70000002
119 #define SHT_MIPS_GPTAB          0x70000003
120 #define SHT_MIPS_UCODE          0x70000004
121 #define SHT_MIPS_DEBUG          0x70000005
122 #define SHT_MIPS_REGINFO        0x70000006
123 #define SHT_MIPS_PACKAGE        0x70000007
124 #define SHT_MIPS_PACKSYM        0x70000008
125 #define SHT_MIPS_RELD           0x70000009
126 #define SHT_MIPS_IFACE          0x7000000b
127 #define SHT_MIPS_CONTENT        0x7000000c
128 #define SHT_MIPS_OPTIONS        0x7000000d
129 #define SHT_MIPS_SHDR           0x70000010
130 #define SHT_MIPS_FDESC          0x70000011
131 #define SHT_MIPS_EXTSYM         0x70000012
132 #define SHT_MIPS_DENSE          0x70000013
133 #define SHT_MIPS_PDESC          0x70000014
134 #define SHT_MIPS_LOCSYM         0x70000015
135 #define SHT_MIPS_AUXSYM         0x70000016
136 #define SHT_MIPS_OPTSYM         0x70000017
137 #define SHT_MIPS_LOCSTR         0x70000018
138 #define SHT_MIPS_LINE           0x70000019
139 #define SHT_MIPS_RFDESC         0x7000001a
140 #define SHT_MIPS_DELTASYM       0x7000001b
141 #define SHT_MIPS_DELTAINST      0x7000001c
142 #define SHT_MIPS_DELTACLASS     0x7000001d
143 #define SHT_MIPS_DWARF          0x7000001e
144 #define SHT_MIPS_DELTADECL      0x7000001f
145 #define SHT_MIPS_SYMBOL_LIB     0x70000020
146 #define SHT_MIPS_EVENTS         0x70000021
147 #define SHT_MIPS_TRANSLATE      0x70000022
148 #define SHT_MIPS_PIXIE          0x70000023
149 #define SHT_MIPS_XLATE          0x70000024
150 #define SHT_MIPS_XLATE_DEBUG    0x70000025
151 #define SHT_MIPS_WHIRL          0x70000026
152 #define SHT_MIPS_EH_REGION      0x70000027
153 #define SHT_MIPS_XLATE_OLD      0x70000028
154 #define SHT_MIPS_PDR_EXCEPTION  0x70000029
155 
156 #define SHF_MIPS_GPREL          0x10000000
157 #define SHF_MIPS_MERGE          0x20000000
158 #define SHF_MIPS_ADDR           0x40000000
159 #define SHF_MIPS_STRING         0x80000000
160 #define SHF_MIPS_NOSTRIP        0x08000000
161 #define SHF_MIPS_LOCAL          0x04000000
162 #define SHF_MIPS_NAMES          0x02000000
163 #define SHF_MIPS_NODUPES        0x01000000
164 
165 #ifndef ELF_ARCH
166 /* ELF register definitions */
167 #define ELF_NGREG       45
168 #define ELF_NFPREG      33
169 
170 typedef unsigned long elf_greg_t;
171 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
172 
173 typedef double elf_fpreg_t;
174 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
175 
176 #ifdef CONFIG_32BIT
177 
178 /*
179  * This is used to ensure we don't load something for the wrong architecture.
180  */
181 #define elf_check_arch(hdr)                                             \
182 ({                                                                      \
183         int __res = 1;                                                  \
184         struct elfhdr *__h = (hdr);                                     \
185                                                                         \
186         if (__h->e_machine != EM_MIPS)                                  \
187                 __res = 0;                                              \
188         if (__h->e_ident[EI_CLASS] != ELFCLASS32)                       \
189                 __res = 0;                                              \
190         if ((__h->e_flags & EF_MIPS_ABI2) != 0)                         \
191                 __res = 0;                                              \
192         if (((__h->e_flags & EF_MIPS_ABI) != 0) &&                      \
193             ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32))          \
194                 __res = 0;                                              \
195                                                                         \
196         __res;                                                          \
197 })
198 
199 /*
200  * These are used to set parameters in the core dumps.
201  */
202 #define ELF_CLASS       ELFCLASS32
203 
204 #endif /* CONFIG_32BIT */
205 
206 #ifdef CONFIG_64BIT
207 /*
208  * This is used to ensure we don't load something for the wrong architecture.
209  */
210 #define elf_check_arch(hdr)                                             \
211 ({                                                                      \
212         int __res = 1;                                                  \
213         struct elfhdr *__h = (hdr);                                     \
214                                                                         \
215         if (__h->e_machine != EM_MIPS)                                  \
216                 __res = 0;                                              \
217         if (__h->e_ident[EI_CLASS] != ELFCLASS64)                       \
218                 __res = 0;                                              \
219                                                                         \
220         __res;                                                          \
221 })
222 
223 /*
224  * These are used to set parameters in the core dumps.
225  */
226 #define ELF_CLASS       ELFCLASS64
227 
228 #endif /* CONFIG_64BIT */
229 
230 /*
231  * These are used to set parameters in the core dumps.
232  */
233 #ifdef __MIPSEB__
234 #define ELF_DATA        ELFDATA2MSB
235 #elif defined(__MIPSEL__)
236 #define ELF_DATA        ELFDATA2LSB
237 #endif
238 #define ELF_ARCH        EM_MIPS
239 
240 #endif /* !defined(ELF_ARCH) */
241 
242 struct mips_abi;
243 
244 extern struct mips_abi mips_abi;
245 extern struct mips_abi mips_abi_32;
246 extern struct mips_abi mips_abi_n32;
247 
248 #ifdef CONFIG_32BIT
249 
250 #define SET_PERSONALITY(ex)                                             \
251 do {                                                                    \
252         if (personality(current->personality) != PER_LINUX)             \
253                 set_personality(PER_LINUX);                             \
254                                                                         \
255         current->thread.abi = &mips_abi;                                \
256 } while (0)
257 
258 #endif /* CONFIG_32BIT */
259 
260 #ifdef CONFIG_64BIT
261 
262 #ifdef CONFIG_MIPS32_N32
263 #define __SET_PERSONALITY32_N32()                                       \
264         do {                                                            \
265                 set_thread_flag(TIF_32BIT_ADDR);                        \
266                 current->thread.abi = &mips_abi_n32;                    \
267         } while (0)
268 #else
269 #define __SET_PERSONALITY32_N32()                                       \
270         do { } while (0)
271 #endif
272 
273 #ifdef CONFIG_MIPS32_O32
274 #define __SET_PERSONALITY32_O32()                                       \
275         do {                                                            \
276                 set_thread_flag(TIF_32BIT_REGS);                        \
277                 set_thread_flag(TIF_32BIT_ADDR);                        \
278                 current->thread.abi = &mips_abi_32;                     \
279         } while (0)
280 #else
281 #define __SET_PERSONALITY32_O32()                                       \
282         do { } while (0)
283 #endif
284 
285 #ifdef CONFIG_MIPS32_COMPAT
286 #define __SET_PERSONALITY32(ex)                                         \
287 do {                                                                    \
288         if ((((ex).e_flags & EF_MIPS_ABI2) != 0) &&                     \
289              ((ex).e_flags & EF_MIPS_ABI) == 0)                         \
290                 __SET_PERSONALITY32_N32();                              \
291         else                                                            \
292                 __SET_PERSONALITY32_O32();                              \
293 } while (0)
294 #else
295 #define __SET_PERSONALITY32(ex) do { } while (0)
296 #endif
297 
298 #define SET_PERSONALITY(ex)                                             \
299 do {                                                                    \
300         unsigned int p;                                                 \
301                                                                         \
302         clear_thread_flag(TIF_32BIT_REGS);                              \
303         clear_thread_flag(TIF_32BIT_ADDR);                              \
304                                                                         \
305         if ((ex).e_ident[EI_CLASS] == ELFCLASS32)                       \
306                 __SET_PERSONALITY32(ex);                                \
307         else                                                            \
308                 current->thread.abi = &mips_abi;                        \
309                                                                         \
310         p = personality(current->personality);                          \
311         if (p != PER_LINUX32 && p != PER_LINUX)                         \
312                 set_personality(PER_LINUX);                             \
313 } while (0)
314 
315 #endif /* CONFIG_64BIT */
316 
317 struct pt_regs;
318 struct task_struct;
319 
320 extern void elf_dump_regs(elf_greg_t *, struct pt_regs *regs);
321 extern int dump_task_regs(struct task_struct *, elf_gregset_t *);
322 extern int dump_task_fpu(struct task_struct *, elf_fpregset_t *);
323 
324 #ifndef ELF_CORE_COPY_REGS
325 #define ELF_CORE_COPY_REGS(elf_regs, regs)                      \
326         elf_dump_regs((elf_greg_t *)&(elf_regs), regs);
327 #endif
328 #ifndef ELF_CORE_COPY_TASK_REGS
329 #define ELF_CORE_COPY_TASK_REGS(tsk, elf_regs) dump_task_regs(tsk, elf_regs)
330 #endif
331 #define ELF_CORE_COPY_FPREGS(tsk, elf_fpregs)                   \
332         dump_task_fpu(tsk, elf_fpregs)
333 
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 /*
343  * This yields a string that ld.so will use to load implementation
344  * specific libraries for optimization.  This is more specific in
345  * intent than poking at uname or /proc/cpuinfo.
346  */
347 
348 #define ELF_PLATFORM  __elf_platform
349 extern const char *__elf_platform;
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 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
376 struct linux_binprm;
377 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
378                                        int uses_interp);
379 
380 struct mm_struct;
381 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
382 #define arch_randomize_brk arch_randomize_brk
383 
384 #endif /* _ASM_ELF_H */
385 

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