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Reduce down to one definition of _ELF_DYNAMIC_DO_RELOC.
[thirdparty/glibc.git] / sysdeps / sparc / sparc64 / dl-machine.h
1 /* Machine-dependent ELF dynamic relocation inline functions. Sparc64 version.
2 Copyright (C) 1997-2006, 2009, 2010, 2011 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
18
19 #ifndef dl_machine_h
20 #define dl_machine_h
21
22 #define ELF_MACHINE_NAME "sparc64"
23
24 #include <string.h>
25 #include <sys/param.h>
26 #include <ldsodefs.h>
27 #include <sysdep.h>
28 #include <dl-plt.h>
29
30 #ifndef VALIDX
31 # define VALIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \
32 + DT_EXTRANUM + DT_VALTAGIDX (tag))
33 #endif
34
35 #define ELF64_R_TYPE_ID(info) ((info) & 0xff)
36 #define ELF64_R_TYPE_DATA(info) ((info) >> 8)
37
38 /* Return nonzero iff ELF header is compatible with the running host. */
39 static inline int
40 elf_machine_matches_host (const Elf64_Ehdr *ehdr)
41 {
42 return ehdr->e_machine == EM_SPARCV9;
43 }
44
45 /* We have to do this because elf_machine_{dynamic,load_address} can be
46 invoked from functions that have no GOT references, and thus the compiler
47 has no obligation to load the PIC register. */
48 #define LOAD_PIC_REG(PIC_REG) \
49 do { Elf64_Addr tmp; \
50 __asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
51 "rd %%pc, %0\n\t" \
52 "add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t" \
53 "add %0, %1, %0" \
54 : "=r" (PIC_REG), "=r" (tmp)); \
55 } while (0)
56
57 /* Return the link-time address of _DYNAMIC. Conveniently, this is the
58 first element of the GOT. This must be inlined in a function which
59 uses global data. */
60 static inline Elf64_Addr
61 elf_machine_dynamic (void)
62 {
63 register Elf64_Addr *elf_pic_register __asm__("%l7");
64
65 LOAD_PIC_REG (elf_pic_register);
66
67 return *elf_pic_register;
68 }
69
70 /* Return the run-time load address of the shared object. */
71 static inline Elf64_Addr
72 elf_machine_load_address (void)
73 {
74 register Elf32_Addr *pc __asm ("%o7");
75 register Elf64_Addr *got __asm ("%l7");
76
77 __asm ("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t"
78 "call 1f\n\t"
79 " add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t"
80 "call _DYNAMIC\n\t"
81 "call _GLOBAL_OFFSET_TABLE_\n"
82 "1:\tadd %1, %0, %1\n\t" : "=r" (pc), "=r" (got));
83
84 /* got is now l_addr + _GLOBAL_OFFSET_TABLE_
85 *got is _DYNAMIC
86 pc[2]*4 is l_addr + _DYNAMIC - (long)pc - 8
87 pc[3]*4 is l_addr + _GLOBAL_OFFSET_TABLE_ - (long)pc - 12 */
88 return (Elf64_Addr) got - *got + (Elf32_Sword) ((pc[2] - pc[3]) * 4) - 4;
89 }
90
91 static inline Elf64_Addr __attribute__ ((always_inline))
92 elf_machine_fixup_plt (struct link_map *map, lookup_t t,
93 const Elf64_Rela *reloc,
94 Elf64_Addr *reloc_addr, Elf64_Addr value)
95 {
96 sparc64_fixup_plt (map, reloc, reloc_addr, value + reloc->r_addend,
97 reloc->r_addend, 1);
98 return value;
99 }
100
101 /* Return the final value of a plt relocation. */
102 static inline Elf64_Addr
103 elf_machine_plt_value (struct link_map *map, const Elf64_Rela *reloc,
104 Elf64_Addr value)
105 {
106 /* Don't add addend here, but in elf_machine_fixup_plt instead.
107 value + reloc->r_addend is the value which should actually be
108 stored into .plt data slot. */
109 return value;
110 }
111
112 /* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
113 PLT entries should not be allowed to define the value.
114 ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
115 of the main executable's symbols, as for a COPY reloc. */
116 #define elf_machine_type_class(type) \
117 ((((type) == R_SPARC_JMP_SLOT \
118 || ((type) >= R_SPARC_TLS_GD_HI22 && (type) <= R_SPARC_TLS_TPOFF64)) \
119 * ELF_RTYPE_CLASS_PLT) \
120 | (((type) == R_SPARC_COPY) * ELF_RTYPE_CLASS_COPY))
121
122 /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
123 #define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT
124
125 /* The SPARC never uses Elf64_Rel relocations. */
126 #define ELF_MACHINE_NO_REL 1
127
128 /* Set up the loaded object described by L so its unrelocated PLT
129 entries will jump to the on-demand fixup code in dl-runtime.c. */
130
131 static inline int
132 elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
133 {
134 if (l->l_info[DT_JMPREL] && lazy)
135 {
136 extern void _dl_runtime_resolve_0 (void);
137 extern void _dl_runtime_resolve_1 (void);
138 extern void _dl_runtime_profile_0 (void);
139 extern void _dl_runtime_profile_1 (void);
140 Elf64_Addr res0_addr, res1_addr;
141 unsigned int *plt = (void *) D_PTR (l, l_info[DT_PLTGOT]);
142
143 if (__builtin_expect(profile, 0))
144 {
145 res0_addr = (Elf64_Addr) &_dl_runtime_profile_0;
146 res1_addr = (Elf64_Addr) &_dl_runtime_profile_1;
147
148 if (GLRO(dl_profile) != NULL
149 && _dl_name_match_p (GLRO(dl_profile), l))
150 GL(dl_profile_map) = l;
151 }
152 else
153 {
154 res0_addr = (Elf64_Addr) &_dl_runtime_resolve_0;
155 res1_addr = (Elf64_Addr) &_dl_runtime_resolve_1;
156 }
157
158 /* PLT0 looks like:
159
160 sethi %uhi(_dl_runtime_{resolve,profile}_0), %g4
161 sethi %hi(_dl_runtime_{resolve,profile}_0), %g5
162 or %g4, %ulo(_dl_runtime_{resolve,profile}_0), %g4
163 or %g5, %lo(_dl_runtime_{resolve,profile}_0), %g5
164 sllx %g4, 32, %g4
165 add %g4, %g5, %g5
166 jmpl %g5, %g4
167 nop
168 */
169
170 plt[0] = 0x09000000 | (res0_addr >> (64 - 22));
171 plt[1] = 0x0b000000 | ((res0_addr >> 10) & 0x003fffff);
172 plt[2] = 0x88112000 | ((res0_addr >> 32) & 0x3ff);
173 plt[3] = 0x8a116000 | (res0_addr & 0x3ff);
174 plt[4] = 0x89293020;
175 plt[5] = 0x8a010005;
176 plt[6] = 0x89c14000;
177 plt[7] = 0x01000000;
178
179 /* PLT1 looks like:
180
181 sethi %uhi(_dl_runtime_{resolve,profile}_1), %g4
182 sethi %hi(_dl_runtime_{resolve,profile}_1), %g5
183 or %g4, %ulo(_dl_runtime_{resolve,profile}_1), %g4
184 or %g5, %lo(_dl_runtime_{resolve,profile}_1), %g5
185 sllx %g4, 32, %g4
186 add %g4, %g5, %g5
187 jmpl %g5, %g4
188 nop
189 */
190
191 plt[8] = 0x09000000 | (res1_addr >> (64 - 22));
192 plt[9] = 0x0b000000 | ((res1_addr >> 10) & 0x003fffff);
193 plt[10] = 0x88112000 | ((res1_addr >> 32) & 0x3ff);
194 plt[11] = 0x8a116000 | (res1_addr & 0x3ff);
195 plt[12] = 0x89293020;
196 plt[13] = 0x8a010005;
197 plt[14] = 0x89c14000;
198 plt[15] = 0x01000000;
199
200 /* Now put the magic cookie at the beginning of .PLT2
201 Entry .PLT3 is unused by this implementation. */
202 *((struct link_map **)(&plt[16])) = l;
203
204 if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
205 || __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
206 {
207 /* Need to reinitialize .plt to undo prelinking. */
208 Elf64_Rela *rela = (Elf64_Rela *) D_PTR (l, l_info[DT_JMPREL]);
209 Elf64_Rela *relaend
210 = (Elf64_Rela *) ((char *) rela
211 + l->l_info[DT_PLTRELSZ]->d_un.d_val);
212
213 /* prelink must ensure there are no R_SPARC_NONE relocs left
214 in .rela.plt. */
215 while (rela < relaend)
216 {
217 if (__builtin_expect (rela->r_addend, 0) != 0)
218 {
219 Elf64_Addr slot = ((rela->r_offset + l->l_addr + 0x400
220 - (Elf64_Addr) plt)
221 / 0x1400) * 0x1400
222 + (Elf64_Addr) plt - 0x400;
223 /* ldx [%o7 + X], %g1 */
224 unsigned int first_ldx = *(unsigned int *)(slot + 12);
225 Elf64_Addr ptr = slot + (first_ldx & 0xfff) + 4;
226
227 *(Elf64_Addr *) (rela->r_offset + l->l_addr)
228 = (Elf64_Addr) plt
229 - (slot + ((rela->r_offset + l->l_addr - ptr) / 8) * 24
230 + 4);
231 ++rela;
232 continue;
233 }
234
235 *(unsigned int *) (rela->r_offset + l->l_addr)
236 = 0x03000000 | (rela->r_offset + l->l_addr - (Elf64_Addr) plt);
237 *(unsigned int *) (rela->r_offset + l->l_addr + 4)
238 = 0x30680000 | ((((Elf64_Addr) plt + 32 - rela->r_offset
239 - l->l_addr - 4) >> 2) & 0x7ffff);
240 __asm __volatile ("flush %0" : : "r" (rela->r_offset
241 + l->l_addr));
242 __asm __volatile ("flush %0+4" : : "r" (rela->r_offset
243 + l->l_addr));
244 ++rela;
245 }
246 }
247 }
248
249 return lazy;
250 }
251
252 /* The PLT uses Elf64_Rela relocs. */
253 #define elf_machine_relplt elf_machine_rela
254
255 /* Undo the sub %sp, 6*8, %sp; add %sp, STACK_BIAS + 22*8, %o0 below
256 (but w/o STACK_BIAS) to get at the value we want in __libc_stack_end. */
257 #define DL_STACK_END(cookie) \
258 ((void *) (((long) (cookie)) - (22 - 6) * 8))
259
260 /* Initial entry point code for the dynamic linker.
261 The C function `_dl_start' is the real entry point;
262 its return value is the user program's entry point. */
263
264 #define RTLD_GOT_ADDRESS(pic_reg, reg, symbol) \
265 "sethi %gdop_hix22(" #symbol "), " #reg "\n\t" \
266 "xor " #reg ", %gdop_lox10(" #symbol "), " #reg "\n\t" \
267 "ldx [" #pic_reg " + " #reg "], " #reg ", %gdop(" #symbol ")\n"
268
269 #define __S1(x) #x
270 #define __S(x) __S1(x)
271
272 #define RTLD_START __asm__ ( "\n" \
273 " .text\n" \
274 " .global _start\n" \
275 " .type _start, @function\n" \
276 " .align 32\n" \
277 "_start:\n" \
278 " /* Make room for functions to drop their arguments on the stack. */\n" \
279 " sub %sp, 6*8, %sp\n" \
280 " /* Pass pointer to argument block to _dl_start. */\n" \
281 " call _dl_start\n" \
282 " add %sp," __S(STACK_BIAS) "+22*8,%o0\n" \
283 " /* FALLTHRU */\n" \
284 " .size _start, .-_start\n" \
285 "\n" \
286 " .global _dl_start_user\n" \
287 " .type _dl_start_user, @function\n" \
288 "_dl_start_user:\n" \
289 " /* Load the GOT register. */\n" \
290 "1: call 11f\n" \
291 " sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n" \
292 "11: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n" \
293 " add %l7, %o7, %l7\n" \
294 " /* Save the user entry point address in %l0. */\n" \
295 " mov %o0, %l0\n" \
296 " /* See if we were run as a command with the executable file name as an\n" \
297 " extra leading argument. If so, we must shift things around since we\n" \
298 " must keep the stack doubleword aligned. */\n" \
299 RTLD_GOT_ADDRESS(%l7, %g5, _dl_skip_args) \
300 " ld [%g5], %i0\n" \
301 " brz,pt %i0, 2f\n" \
302 " ldx [%sp + " __S(STACK_BIAS) " + 22*8], %i5\n" \
303 " /* Find out how far to shift. */\n" \
304 " sub %i5, %i0, %i5\n" \
305 " sllx %i0, 3, %l6\n" \
306 RTLD_GOT_ADDRESS(%l7, %l4, _dl_argv) \
307 " stx %i5, [%sp + " __S(STACK_BIAS) " + 22*8]\n" \
308 " add %sp, " __S(STACK_BIAS) " + 23*8, %i1\n" \
309 " add %i1, %l6, %i2\n" \
310 " ldx [%l4], %l5\n" \
311 " /* Copy down argv. */\n" \
312 "12: ldx [%i2], %i3\n" \
313 " add %i2, 8, %i2\n" \
314 " stx %i3, [%i1]\n" \
315 " brnz,pt %i3, 12b\n" \
316 " add %i1, 8, %i1\n" \
317 " sub %l5, %l6, %l5\n" \
318 " /* Copy down envp. */\n" \
319 "13: ldx [%i2], %i3\n" \
320 " add %i2, 8, %i2\n" \
321 " stx %i3, [%i1]\n" \
322 " brnz,pt %i3, 13b\n" \
323 " add %i1, 8, %i1\n" \
324 " /* Copy down auxiliary table. */\n" \
325 "14: ldx [%i2], %i3\n" \
326 " ldx [%i2 + 8], %i4\n" \
327 " add %i2, 16, %i2\n" \
328 " stx %i3, [%i1]\n" \
329 " stx %i4, [%i1 + 8]\n" \
330 " brnz,pt %i3, 14b\n" \
331 " add %i1, 16, %i1\n" \
332 " stx %l5, [%l4]\n" \
333 " /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n" \
334 "2:\t" RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) \
335 " sllx %i5, 3, %o3\n" \
336 " add %sp, " __S(STACK_BIAS) " + 23*8, %o2\n" \
337 " add %o3, 8, %o3\n" \
338 " mov %i5, %o1\n" \
339 " add %o2, %o3, %o3\n" \
340 " call _dl_init_internal\n" \
341 " ldx [%o0], %o0\n" \
342 " /* Pass our finalizer function to the user in %g1. */\n" \
343 RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) \
344 " /* Jump to the user's entry point and deallocate the extra stack we got. */\n" \
345 " jmp %l0\n" \
346 " add %sp, 6*8, %sp\n" \
347 " .size _dl_start_user, . - _dl_start_user\n" \
348 " .previous\n");
349
350 #endif /* dl_machine_h */
351
352 #define ARCH_LA_PLTENTER sparc64_gnu_pltenter
353 #define ARCH_LA_PLTEXIT sparc64_gnu_pltexit
354
355 #ifdef RESOLVE_MAP
356
357 /* Perform the relocation specified by RELOC and SYM (which is fully resolved).
358 MAP is the object containing the reloc. */
359
360 auto inline void
361 __attribute__ ((always_inline))
362 elf_machine_rela (struct link_map *map, const Elf64_Rela *reloc,
363 const Elf64_Sym *sym, const struct r_found_version *version,
364 void *const reloc_addr_arg, int skip_ifunc)
365 {
366 Elf64_Addr *const reloc_addr = reloc_addr_arg;
367 #if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
368 const Elf64_Sym *const refsym = sym;
369 #endif
370 Elf64_Addr value;
371 const unsigned long int r_type = ELF64_R_TYPE_ID (reloc->r_info);
372 #if !defined RESOLVE_CONFLICT_FIND_MAP
373 struct link_map *sym_map = NULL;
374 #endif
375
376 #if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
377 /* This is defined in rtld.c, but nowhere in the static libc.a; make the
378 reference weak so static programs can still link. This declaration
379 cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP)
380 because rtld.c contains the common defn for _dl_rtld_map, which is
381 incompatible with a weak decl in the same file. */
382 weak_extern (_dl_rtld_map);
383 #endif
384
385 if (__builtin_expect (r_type == R_SPARC_NONE, 0))
386 return;
387
388 #if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
389 if (__builtin_expect (r_type == R_SPARC_RELATIVE, 0))
390 {
391 # if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
392 if (map != &_dl_rtld_map) /* Already done in rtld itself. */
393 # endif
394 *reloc_addr += map->l_addr + reloc->r_addend;
395 return;
396 }
397 #endif
398
399 #ifndef RESOLVE_CONFLICT_FIND_MAP
400 if (__builtin_expect (ELF64_ST_BIND (sym->st_info) == STB_LOCAL, 0)
401 && sym->st_shndx != SHN_UNDEF)
402 {
403 value = map->l_addr;
404 }
405 else
406 {
407 sym_map = RESOLVE_MAP (&sym, version, r_type);
408 value = sym_map == NULL ? 0 : sym_map->l_addr + sym->st_value;
409 }
410 #else
411 value = 0;
412 #endif
413
414 value += reloc->r_addend; /* Assume copy relocs have zero addend. */
415
416 if (sym != NULL
417 && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0)
418 && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)
419 && __builtin_expect (!skip_ifunc, 1))
420 value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
421
422 switch (r_type)
423 {
424 #if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
425 case R_SPARC_COPY:
426 if (sym == NULL)
427 /* This can happen in trace mode if an object could not be
428 found. */
429 break;
430 if (sym->st_size > refsym->st_size
431 || (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
432 {
433 const char *strtab;
434
435 strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
436 _dl_error_printf ("\
437 %s: Symbol `%s' has different size in shared object, consider re-linking\n",
438 rtld_progname ?: "<program name unknown>",
439 strtab + refsym->st_name);
440 }
441 memcpy (reloc_addr_arg, (void *) value,
442 MIN (sym->st_size, refsym->st_size));
443 break;
444 #endif
445 case R_SPARC_64:
446 case R_SPARC_GLOB_DAT:
447 *reloc_addr = value;
448 break;
449 case R_SPARC_IRELATIVE:
450 value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
451 *reloc_addr = value;
452 break;
453 case R_SPARC_JMP_IREL:
454 value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
455 /* Fall thru */
456 case R_SPARC_JMP_SLOT:
457 #ifdef RESOLVE_CONFLICT_FIND_MAP
458 /* R_SPARC_JMP_SLOT conflicts against .plt[32768+]
459 relocs should be turned into R_SPARC_64 relocs
460 in .gnu.conflict section.
461 r_addend non-zero does not mean it is a .plt[32768+]
462 reloc, instead it is the actual address of the function
463 to call. */
464 sparc64_fixup_plt (NULL, reloc, reloc_addr, value, 0, 0);
465 #else
466 sparc64_fixup_plt (map, reloc, reloc_addr, value, reloc->r_addend, 0);
467 #endif
468 break;
469 #ifndef RESOLVE_CONFLICT_FIND_MAP
470 case R_SPARC_TLS_DTPMOD64:
471 /* Get the information from the link map returned by the
472 resolv function. */
473 if (sym_map != NULL)
474 *reloc_addr = sym_map->l_tls_modid;
475 break;
476 case R_SPARC_TLS_DTPOFF64:
477 /* During relocation all TLS symbols are defined and used.
478 Therefore the offset is already correct. */
479 *reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
480 break;
481 case R_SPARC_TLS_TPOFF64:
482 /* The offset is negative, forward from the thread pointer. */
483 /* We know the offset of object the symbol is contained in.
484 It is a negative value which will be added to the
485 thread pointer. */
486 if (sym != NULL)
487 {
488 CHECK_STATIC_TLS (map, sym_map);
489 *reloc_addr = sym->st_value - sym_map->l_tls_offset
490 + reloc->r_addend;
491 }
492 break;
493 # ifndef RTLD_BOOTSTRAP
494 case R_SPARC_TLS_LE_HIX22:
495 case R_SPARC_TLS_LE_LOX10:
496 if (sym != NULL)
497 {
498 CHECK_STATIC_TLS (map, sym_map);
499 value = sym->st_value - sym_map->l_tls_offset
500 + reloc->r_addend;
501 if (r_type == R_SPARC_TLS_LE_HIX22)
502 *(unsigned int *)reloc_addr =
503 ((*(unsigned int *)reloc_addr & 0xffc00000)
504 | (((~value) >> 10) & 0x3fffff));
505 else
506 *(unsigned int *)reloc_addr =
507 ((*(unsigned int *)reloc_addr & 0xffffe000) | (value & 0x3ff)
508 | 0x1c00);
509 }
510 break;
511 # endif
512 #endif
513 #ifndef RTLD_BOOTSTRAP
514 case R_SPARC_8:
515 *(char *) reloc_addr = value;
516 break;
517 case R_SPARC_16:
518 *(short *) reloc_addr = value;
519 break;
520 case R_SPARC_32:
521 *(unsigned int *) reloc_addr = value;
522 break;
523 case R_SPARC_DISP8:
524 *(char *) reloc_addr = (value - (Elf64_Addr) reloc_addr);
525 break;
526 case R_SPARC_DISP16:
527 *(short *) reloc_addr = (value - (Elf64_Addr) reloc_addr);
528 break;
529 case R_SPARC_DISP32:
530 *(unsigned int *) reloc_addr = (value - (Elf64_Addr) reloc_addr);
531 break;
532 case R_SPARC_WDISP30:
533 *(unsigned int *) reloc_addr =
534 ((*(unsigned int *)reloc_addr & 0xc0000000) |
535 (((value - (Elf64_Addr) reloc_addr) >> 2) & 0x3fffffff));
536 break;
537
538 /* MEDLOW code model relocs */
539 case R_SPARC_LO10:
540 *(unsigned int *) reloc_addr =
541 ((*(unsigned int *)reloc_addr & ~0x3ff) |
542 (value & 0x3ff));
543 break;
544 case R_SPARC_HI22:
545 *(unsigned int *) reloc_addr =
546 ((*(unsigned int *)reloc_addr & 0xffc00000) |
547 ((value >> 10) & 0x3fffff));
548 break;
549 case R_SPARC_OLO10:
550 *(unsigned int *) reloc_addr =
551 ((*(unsigned int *)reloc_addr & ~0x1fff) |
552 (((value & 0x3ff) + ELF64_R_TYPE_DATA (reloc->r_info)) & 0x1fff));
553 break;
554
555 /* MEDMID code model relocs */
556 case R_SPARC_H44:
557 *(unsigned int *) reloc_addr =
558 ((*(unsigned int *)reloc_addr & 0xffc00000) |
559 ((value >> 22) & 0x3fffff));
560 break;
561 case R_SPARC_M44:
562 *(unsigned int *) reloc_addr =
563 ((*(unsigned int *)reloc_addr & ~0x3ff) |
564 ((value >> 12) & 0x3ff));
565 break;
566 case R_SPARC_L44:
567 *(unsigned int *) reloc_addr =
568 ((*(unsigned int *)reloc_addr & ~0xfff) |
569 (value & 0xfff));
570 break;
571
572 /* MEDANY code model relocs */
573 case R_SPARC_HH22:
574 *(unsigned int *) reloc_addr =
575 ((*(unsigned int *)reloc_addr & 0xffc00000) |
576 (value >> 42));
577 break;
578 case R_SPARC_HM10:
579 *(unsigned int *) reloc_addr =
580 ((*(unsigned int *)reloc_addr & ~0x3ff) |
581 ((value >> 32) & 0x3ff));
582 break;
583 case R_SPARC_LM22:
584 *(unsigned int *) reloc_addr =
585 ((*(unsigned int *)reloc_addr & 0xffc00000) |
586 ((value >> 10) & 0x003fffff));
587 break;
588 case R_SPARC_UA16:
589 ((unsigned char *) reloc_addr_arg) [0] = value >> 8;
590 ((unsigned char *) reloc_addr_arg) [1] = value;
591 break;
592 case R_SPARC_UA32:
593 ((unsigned char *) reloc_addr_arg) [0] = value >> 24;
594 ((unsigned char *) reloc_addr_arg) [1] = value >> 16;
595 ((unsigned char *) reloc_addr_arg) [2] = value >> 8;
596 ((unsigned char *) reloc_addr_arg) [3] = value;
597 break;
598 case R_SPARC_UA64:
599 if (! ((long) reloc_addr_arg & 3))
600 {
601 /* Common in .eh_frame */
602 ((unsigned int *) reloc_addr_arg) [0] = value >> 32;
603 ((unsigned int *) reloc_addr_arg) [1] = value;
604 break;
605 }
606 ((unsigned char *) reloc_addr_arg) [0] = value >> 56;
607 ((unsigned char *) reloc_addr_arg) [1] = value >> 48;
608 ((unsigned char *) reloc_addr_arg) [2] = value >> 40;
609 ((unsigned char *) reloc_addr_arg) [3] = value >> 32;
610 ((unsigned char *) reloc_addr_arg) [4] = value >> 24;
611 ((unsigned char *) reloc_addr_arg) [5] = value >> 16;
612 ((unsigned char *) reloc_addr_arg) [6] = value >> 8;
613 ((unsigned char *) reloc_addr_arg) [7] = value;
614 break;
615 #endif
616 #if !defined RTLD_BOOTSTRAP || defined _NDEBUG
617 default:
618 _dl_reloc_bad_type (map, r_type, 0);
619 break;
620 #endif
621 }
622 }
623
624 auto inline void
625 __attribute__ ((always_inline))
626 elf_machine_rela_relative (Elf64_Addr l_addr, const Elf64_Rela *reloc,
627 void *const reloc_addr_arg)
628 {
629 Elf64_Addr *const reloc_addr = reloc_addr_arg;
630 *reloc_addr = l_addr + reloc->r_addend;
631 }
632
633 auto inline void
634 __attribute__ ((always_inline))
635 elf_machine_lazy_rel (struct link_map *map,
636 Elf64_Addr l_addr, const Elf64_Rela *reloc,
637 int skip_ifunc)
638 {
639 Elf64_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
640 const unsigned int r_type = ELF64_R_TYPE (reloc->r_info);
641
642 if (__builtin_expect (r_type == R_SPARC_JMP_SLOT, 1))
643 ;
644 else if (r_type == R_SPARC_JMP_IREL
645 || r_type == R_SPARC_IRELATIVE)
646 {
647 Elf64_Addr value = map->l_addr + reloc->r_addend;
648 if (__builtin_expect (!skip_ifunc, 1))
649 value = ((Elf64_Addr (*) (int)) value) (GLRO(dl_hwcap));
650 if (r_type == R_SPARC_JMP_IREL)
651 {
652 /* 'high' is always zero, for large PLT entries the linker
653 emits an R_SPARC_IRELATIVE. */
654 sparc64_fixup_plt (map, reloc, reloc_addr, value, 0, 1);
655 }
656 else
657 *reloc_addr = value;
658 }
659 else if (r_type == R_SPARC_NONE)
660 ;
661 else
662 _dl_reloc_bad_type (map, r_type, 1);
663 }
664
665 #endif /* RESOLVE_MAP */
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