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
6 * Much of this is taken from binutils and GNU libc ...
12 #include <uapi/linux/elf.h>
14 /* ELF header e_flags defines. */
15 /* MIPS architecture level. */
16 #define EF_MIPS_ARCH_1 0x00000000 /* -mips1 code. */
17 #define EF_MIPS_ARCH_2 0x10000000 /* -mips2 code. */
18 #define EF_MIPS_ARCH_3 0x20000000 /* -mips3 code. */
19 #define EF_MIPS_ARCH_4 0x30000000 /* -mips4 code. */
20 #define EF_MIPS_ARCH_5 0x40000000 /* -mips5 code. */
21 #define EF_MIPS_ARCH_32 0x50000000 /* MIPS32 code. */
22 #define EF_MIPS_ARCH_64 0x60000000 /* MIPS64 code. */
23 #define EF_MIPS_ARCH_32R2 0x70000000 /* MIPS32 R2 code. */
24 #define EF_MIPS_ARCH_64R2 0x80000000 /* MIPS64 R2 code. */
26 /* The ABI of a file. */
27 #define EF_MIPS_ABI_O32 0x00001000 /* O32 ABI. */
28 #define EF_MIPS_ABI_O64 0x00002000 /* O32 extended for 64 bit. */
30 #define PT_MIPS_REGINFO 0x70000000
31 #define PT_MIPS_RTPROC 0x70000001
32 #define PT_MIPS_OPTIONS 0x70000002
33 #define PT_MIPS_ABIFLAGS 0x70000003
35 /* Flags in the e_flags field of the header */
36 #define EF_MIPS_NOREORDER 0x00000001
37 #define EF_MIPS_PIC 0x00000002
38 #define EF_MIPS_CPIC 0x00000004
39 #define EF_MIPS_ABI2 0x00000020
40 #define EF_MIPS_OPTIONS_FIRST 0x00000080
41 #define EF_MIPS_32BITMODE 0x00000100
42 #define EF_MIPS_FP64 0x00000200
43 #define EF_MIPS_ABI 0x0000f000
44 #define EF_MIPS_ARCH 0xf0000000
46 #define DT_MIPS_RLD_VERSION 0x70000001
47 #define DT_MIPS_TIME_STAMP 0x70000002
48 #define DT_MIPS_ICHECKSUM 0x70000003
49 #define DT_MIPS_IVERSION 0x70000004
50 #define DT_MIPS_FLAGS 0x70000005
51 #define RHF_NONE 0x00000000
52 #define RHF_HARDWAY 0x00000001
53 #define RHF_NOTPOT 0x00000002
54 #define RHF_SGI_ONLY 0x00000010
55 #define DT_MIPS_BASE_ADDRESS 0x70000006
56 #define DT_MIPS_CONFLICT 0x70000008
57 #define DT_MIPS_LIBLIST 0x70000009
58 #define DT_MIPS_LOCAL_GOTNO 0x7000000a
59 #define DT_MIPS_CONFLICTNO 0x7000000b
60 #define DT_MIPS_LIBLISTNO 0x70000010
61 #define DT_MIPS_SYMTABNO 0x70000011
62 #define DT_MIPS_UNREFEXTNO 0x70000012
63 #define DT_MIPS_GOTSYM 0x70000013
64 #define DT_MIPS_HIPAGENO 0x70000014
65 #define DT_MIPS_RLD_MAP 0x70000016
70 #define R_MIPS_REL32 3
74 #define R_MIPS_GPREL16 7
75 #define R_MIPS_LITERAL 8
76 #define R_MIPS_GOT16 9
77 #define R_MIPS_PC16 10
78 #define R_MIPS_CALL16 11
79 #define R_MIPS_GPREL32 12
80 /* The remaining relocs are defined on Irix, although they are not
81 in the MIPS ELF ABI. */
82 #define R_MIPS_UNUSED1 13
83 #define R_MIPS_UNUSED2 14
84 #define R_MIPS_UNUSED3 15
85 #define R_MIPS_SHIFT5 16
86 #define R_MIPS_SHIFT6 17
88 #define R_MIPS_GOT_DISP 19
89 #define R_MIPS_GOT_PAGE 20
90 #define R_MIPS_GOT_OFST 21
92 * The following two relocation types are specified in the MIPS ABI
93 * conformance guide version 1.2 but not yet in the psABI.
95 #define R_MIPS_GOTHI16 22
96 #define R_MIPS_GOTLO16 23
98 #define R_MIPS_INSERT_A 25
99 #define R_MIPS_INSERT_B 26
100 #define R_MIPS_DELETE 27
101 #define R_MIPS_HIGHER 28
102 #define R_MIPS_HIGHEST 29
104 * The following two relocation types are specified in the MIPS ABI
105 * conformance guide version 1.2 but not yet in the psABI.
107 #define R_MIPS_CALLHI16 30
108 #define R_MIPS_CALLLO16 31
110 * This range is reserved for vendor specific relocations.
112 #define R_MIPS_LOVENDOR 100
113 #define R_MIPS_HIVENDOR 127
115 #define SHN_MIPS_ACCOMON 0xff00 /* Allocated common symbols */
116 #define SHN_MIPS_TEXT 0xff01 /* Allocated test symbols. */
117 #define SHN_MIPS_DATA 0xff02 /* Allocated data symbols. */
118 #define SHN_MIPS_SCOMMON 0xff03 /* Small common symbols */
119 #define SHN_MIPS_SUNDEFINED 0xff04 /* Small undefined symbols */
121 #define SHT_MIPS_LIST 0x70000000
122 #define SHT_MIPS_CONFLICT 0x70000002
123 #define SHT_MIPS_GPTAB 0x70000003
124 #define SHT_MIPS_UCODE 0x70000004
125 #define SHT_MIPS_DEBUG 0x70000005
126 #define SHT_MIPS_REGINFO 0x70000006
127 #define SHT_MIPS_PACKAGE 0x70000007
128 #define SHT_MIPS_PACKSYM 0x70000008
129 #define SHT_MIPS_RELD 0x70000009
130 #define SHT_MIPS_IFACE 0x7000000b
131 #define SHT_MIPS_CONTENT 0x7000000c
132 #define SHT_MIPS_OPTIONS 0x7000000d
133 #define SHT_MIPS_SHDR 0x70000010
134 #define SHT_MIPS_FDESC 0x70000011
135 #define SHT_MIPS_EXTSYM 0x70000012
136 #define SHT_MIPS_DENSE 0x70000013
137 #define SHT_MIPS_PDESC 0x70000014
138 #define SHT_MIPS_LOCSYM 0x70000015
139 #define SHT_MIPS_AUXSYM 0x70000016
140 #define SHT_MIPS_OPTSYM 0x70000017
141 #define SHT_MIPS_LOCSTR 0x70000018
142 #define SHT_MIPS_LINE 0x70000019
143 #define SHT_MIPS_RFDESC 0x7000001a
144 #define SHT_MIPS_DELTASYM 0x7000001b
145 #define SHT_MIPS_DELTAINST 0x7000001c
146 #define SHT_MIPS_DELTACLASS 0x7000001d
147 #define SHT_MIPS_DWARF 0x7000001e
148 #define SHT_MIPS_DELTADECL 0x7000001f
149 #define SHT_MIPS_SYMBOL_LIB 0x70000020
150 #define SHT_MIPS_EVENTS 0x70000021
151 #define SHT_MIPS_TRANSLATE 0x70000022
152 #define SHT_MIPS_PIXIE 0x70000023
153 #define SHT_MIPS_XLATE 0x70000024
154 #define SHT_MIPS_XLATE_DEBUG 0x70000025
155 #define SHT_MIPS_WHIRL 0x70000026
156 #define SHT_MIPS_EH_REGION 0x70000027
157 #define SHT_MIPS_XLATE_OLD 0x70000028
158 #define SHT_MIPS_PDR_EXCEPTION 0x70000029
160 #define SHF_MIPS_GPREL 0x10000000
161 #define SHF_MIPS_MERGE 0x20000000
162 #define SHF_MIPS_ADDR 0x40000000
163 #define SHF_MIPS_STRING 0x80000000
164 #define SHF_MIPS_NOSTRIP 0x08000000
165 #define SHF_MIPS_LOCAL 0x04000000
166 #define SHF_MIPS_NAMES 0x02000000
167 #define SHF_MIPS_NODUPES 0x01000000
170 /* ELF register definitions */
172 #define ELF_NFPREG 33
174 typedef unsigned long elf_greg_t;
175 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
177 typedef double elf_fpreg_t;
178 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
180 struct mips_elf_abiflags_v0 {
181 uint16_t version; /* Version of flags structure */
182 uint8_t isa_level; /* The level of the ISA: 1-5, 32, 64 */
183 uint8_t isa_rev; /* The revision of ISA: 0 for MIPS V and below,
185 uint8_t gpr_size; /* The size of general purpose registers */
186 uint8_t cpr1_size; /* The size of co-processor 1 registers */
187 uint8_t cpr2_size; /* The size of co-processor 2 registers */
188 uint8_t fp_abi; /* The floating-point ABI */
189 uint32_t isa_ext; /* Mask of processor-specific extensions */
190 uint32_t ases; /* Mask of ASEs used */
191 uint32_t flags1; /* Mask of general flags */
195 #define MIPS_ABI_FP_ANY 0 /* FP ABI doesn't matter */
196 #define MIPS_ABI_FP_DOUBLE 1 /* -mdouble-float */
197 #define MIPS_ABI_FP_SINGLE 2 /* -msingle-float */
198 #define MIPS_ABI_FP_SOFT 3 /* -msoft-float */
199 #define MIPS_ABI_FP_OLD_64 4 /* -mips32r2 -mfp64 */
200 #define MIPS_ABI_FP_XX 5 /* -mfpxx */
201 #define MIPS_ABI_FP_64 6 /* -mips32r2 -mfp64 */
202 #define MIPS_ABI_FP_64A 7 /* -mips32r2 -mfp64 -mno-odd-spreg */
207 * In order to be sure that we don't attempt to execute an O32 binary which
208 * requires 64 bit FP (FR=1) on a system which does not support it we refuse
209 * to execute any binary which has bits specified by the following macro set
210 * in its ELF header flags.
212 #ifdef CONFIG_MIPS_O32_FP64_SUPPORT
213 # define __MIPS_O32_FP64_MUST_BE_ZERO 0
215 # define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64
219 * This is used to ensure we don't load something for the wrong architecture.
221 #define elf_check_arch(hdr) \
224 struct elfhdr *__h = (hdr); \
226 if (__h->e_machine != EM_MIPS) \
228 if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
230 if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
232 if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
233 ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
235 if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \
242 * These are used to set parameters in the core dumps.
244 #define ELF_CLASS ELFCLASS32
246 #endif /* CONFIG_32BIT */
250 * This is used to ensure we don't load something for the wrong architecture.
252 #define elf_check_arch(hdr) \
255 struct elfhdr *__h = (hdr); \
257 if (__h->e_machine != EM_MIPS) \
259 if (__h->e_ident[EI_CLASS] != ELFCLASS64) \
266 * These are used to set parameters in the core dumps.
268 #define ELF_CLASS ELFCLASS64
270 #endif /* CONFIG_64BIT */
273 * These are used to set parameters in the core dumps.
276 #define ELF_DATA ELFDATA2MSB
277 #elif defined(__MIPSEL__)
278 #define ELF_DATA ELFDATA2LSB
280 #define ELF_ARCH EM_MIPS
282 #endif /* !defined(ELF_ARCH) */
286 extern struct mips_abi mips_abi;
287 extern struct mips_abi mips_abi_32;
288 extern struct mips_abi mips_abi_n32;
292 #define SET_PERSONALITY2(ex, state) \
294 if (personality(current->personality) != PER_LINUX) \
295 set_personality(PER_LINUX); \
297 clear_thread_flag(TIF_HYBRID_FPREGS); \
298 set_thread_flag(TIF_32BIT_FPREGS); \
300 mips_set_personality_fp(state); \
302 current->thread.abi = &mips_abi; \
305 #endif /* CONFIG_32BIT */
309 #ifdef CONFIG_MIPS32_N32
310 #define __SET_PERSONALITY32_N32() \
312 set_thread_flag(TIF_32BIT_ADDR); \
313 current->thread.abi = &mips_abi_n32; \
316 #define __SET_PERSONALITY32_N32() \
320 #ifdef CONFIG_MIPS32_O32
321 #define __SET_PERSONALITY32_O32(ex, state) \
323 set_thread_flag(TIF_32BIT_REGS); \
324 set_thread_flag(TIF_32BIT_ADDR); \
325 clear_thread_flag(TIF_HYBRID_FPREGS); \
326 set_thread_flag(TIF_32BIT_FPREGS); \
328 mips_set_personality_fp(state); \
330 current->thread.abi = &mips_abi_32; \
333 #define __SET_PERSONALITY32_O32(ex, state) \
337 #ifdef CONFIG_MIPS32_COMPAT
338 #define __SET_PERSONALITY32(ex, state) \
340 if ((((ex).e_flags & EF_MIPS_ABI2) != 0) && \
341 ((ex).e_flags & EF_MIPS_ABI) == 0) \
342 __SET_PERSONALITY32_N32(); \
344 __SET_PERSONALITY32_O32(ex, state); \
347 #define __SET_PERSONALITY32(ex, state) do { } while (0)
350 #define SET_PERSONALITY2(ex, state) \
354 clear_thread_flag(TIF_32BIT_REGS); \
355 clear_thread_flag(TIF_32BIT_FPREGS); \
356 clear_thread_flag(TIF_HYBRID_FPREGS); \
357 clear_thread_flag(TIF_32BIT_ADDR); \
359 if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
360 __SET_PERSONALITY32(ex, state); \
362 current->thread.abi = &mips_abi; \
364 p = personality(current->personality); \
365 if (p != PER_LINUX32 && p != PER_LINUX) \
366 set_personality(PER_LINUX); \
369 #endif /* CONFIG_64BIT */
371 #define CORE_DUMP_USE_REGSET
372 #define ELF_EXEC_PAGESIZE PAGE_SIZE
374 /* This yields a mask that user programs can use to figure out what
375 instruction set this cpu supports. This could be done in userspace,
376 but it's not easy, and we've already done it here. */
378 #define ELF_HWCAP (0)
381 * This yields a string that ld.so will use to load implementation
382 * specific libraries for optimization. This is more specific in
383 * intent than poking at uname or /proc/cpuinfo.
386 #define ELF_PLATFORM __elf_platform
387 extern const char *__elf_platform;
390 * See comments in asm-alpha/elf.h, this is the same thing
393 #define ELF_PLAT_INIT(_r, load_addr) do { \
394 _r->regs[1] = _r->regs[2] = _r->regs[3] = _r->regs[4] = 0; \
395 _r->regs[5] = _r->regs[6] = _r->regs[7] = _r->regs[8] = 0; \
396 _r->regs[9] = _r->regs[10] = _r->regs[11] = _r->regs[12] = 0; \
397 _r->regs[13] = _r->regs[14] = _r->regs[15] = _r->regs[16] = 0; \
398 _r->regs[17] = _r->regs[18] = _r->regs[19] = _r->regs[20] = 0; \
399 _r->regs[21] = _r->regs[22] = _r->regs[23] = _r->regs[24] = 0; \
400 _r->regs[25] = _r->regs[26] = _r->regs[27] = _r->regs[28] = 0; \
401 _r->regs[30] = _r->regs[31] = 0; \
404 /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
405 use of this is to invoke "./ld.so someprog" to test out a new version of
406 the loader. We need to make sure that it is out of the way of the program
407 that it will "exec", and that there is sufficient room for the brk. */
409 #ifndef ELF_ET_DYN_BASE
410 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
413 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
415 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
419 extern unsigned long arch_randomize_brk(struct mm_struct *mm);
420 #define arch_randomize_brk arch_randomize_brk
422 struct arch_elf_state {
428 #define MIPS_ABI_FP_UNKNOWN (-1) /* Unknown FP ABI (kernel internal) */
430 #define INIT_ARCH_ELF_STATE { \
431 .fp_abi = MIPS_ABI_FP_UNKNOWN, \
432 .interp_fp_abi = MIPS_ABI_FP_UNKNOWN, \
433 .overall_fp_mode = -1, \
436 extern int arch_elf_pt_proc(void *ehdr, void *phdr, struct file *elf,
437 bool is_interp, struct arch_elf_state *state);
439 extern int arch_check_elf(void *ehdr, bool has_interpreter,
440 struct arch_elf_state *state);
442 extern void mips_set_personality_fp(struct arch_elf_state *state);
444 #endif /* _ASM_ELF_H */