1 /* Machine-dependent ELF dynamic relocation inline functions. SPARC version.
2 Copyright (C) 1996-2021 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 <https://www.gnu.org/licenses/>. */
18
19 #ifndef dl_machine_h
20 #define dl_machine_h
21
22 #define ELF_MACHINE_NAME "sparc"
23
24 #include <string.h>
25 #include <sys/param.h>
26 #include <ldsodefs.h>
27 #include <sysdep.h>
28 #include <tls.h>
29 #include <dl-plt.h>
30 #include <elf/dl-hwcaps.h>
31 #include <dl-static-tls.h>
32 #include <dl-machine-rel.h>
33
34 /* Return nonzero iff ELF header is compatible with the running host. */
35 static inline int
elf_machine_matches_host(const Elf32_Ehdr * ehdr)36 elf_machine_matches_host (const Elf32_Ehdr *ehdr)
37 {
38 if (ehdr->e_machine == EM_SPARC)
39 return 1;
40 else if (ehdr->e_machine == EM_SPARC32PLUS)
41 {
42 #if HAVE_TUNABLES || defined SHARED
43 uint64_t hwcap_mask = GET_HWCAP_MASK();
44 return GLRO(dl_hwcap) & hwcap_mask & HWCAP_SPARC_V9;
45 #else
46 return GLRO(dl_hwcap) & HWCAP_SPARC_V9;
47 #endif
48 }
49 else
50 return 0;
51 }
52
53 /* We have to do this because elf_machine_{dynamic,load_address} can be
54 invoked from functions that have no GOT references, and thus the compiler
55 has no obligation to load the PIC register. */
56 #define LOAD_PIC_REG(PIC_REG) \
57 do { register Elf32_Addr pc __asm("o7"); \
58 __asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \
59 "call 1f\n\t" \
60 "add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n" \
61 "1:\tadd %1, %0, %1" \
62 : "=r" (pc), "=r" (PIC_REG)); \
63 } while (0)
64
65 /* Return the link-time address of _DYNAMIC. Conveniently, this is the
66 first element of the GOT. This must be inlined in a function which
67 uses global data. */
68 static inline Elf32_Addr
elf_machine_dynamic(void)69 elf_machine_dynamic (void)
70 {
71 register Elf32_Addr *got asm ("%l7");
72
73 LOAD_PIC_REG (got);
74
75 return *got;
76 }
77
78 /* Return the run-time load address of the shared object. */
79 static inline Elf32_Addr
elf_machine_load_address(void)80 elf_machine_load_address (void)
81 {
82 register Elf32_Addr *pc __asm ("%o7"), *got __asm ("%l7");
83
84 __asm ("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t"
85 "call 1f\n\t"
86 " add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n\t"
87 "call _DYNAMIC\n\t"
88 "call _GLOBAL_OFFSET_TABLE_\n"
89 "1:\tadd %1, %0, %1\n\t" : "=r" (pc), "=r" (got));
90
91 /* got is now l_addr + _GLOBAL_OFFSET_TABLE_
92 *got is _DYNAMIC
93 pc[2]*4 is l_addr + _DYNAMIC - (long)pc - 8
94 pc[3]*4 is l_addr + _GLOBAL_OFFSET_TABLE_ - (long)pc - 12 */
95 return (Elf32_Addr) got - *got + (pc[2] - pc[3]) * 4 - 4;
96 }
97
98 /* Set up the loaded object described by L so its unrelocated PLT
99 entries will jump to the on-demand fixup code in dl-runtime.c. */
100
101 static inline int
elf_machine_runtime_setup(struct link_map * l,struct r_scope_elem * scope[],int lazy,int profile)102 elf_machine_runtime_setup (struct link_map *l, struct r_scope_elem *scope[],
103 int lazy, int profile)
104 {
105 Elf32_Addr *plt;
106 extern void _dl_runtime_resolve (Elf32_Word);
107 extern void _dl_runtime_profile (Elf32_Word);
108
109 if (l->l_info[DT_JMPREL] && lazy)
110 {
111 Elf32_Addr rfunc;
112
113 /* The entries for functions in the PLT have not yet been filled in.
114 Their initial contents will arrange when called to set the high 22
115 bits of %g1 with an offset into the .rela.plt section and jump to
116 the beginning of the PLT. */
117 plt = (Elf32_Addr *) D_PTR (l, l_info[DT_PLTGOT]);
118 if (__builtin_expect(profile, 0))
119 {
120 rfunc = (Elf32_Addr) &_dl_runtime_profile;
121
122 if (GLRO(dl_profile) != NULL
123 && _dl_name_match_p (GLRO(dl_profile), l))
124 GL(dl_profile_map) = l;
125 }
126 else
127 {
128 rfunc = (Elf32_Addr) &_dl_runtime_resolve;
129 }
130
131 /* The beginning of the PLT does:
132
133 sethi %hi(_dl_runtime_{resolve,profile}), %g2
134 pltpc: jmpl %g2 + %lo(_dl_runtime_{resolve,profile}), %g2
135 nop
136 .word MAP
137
138 The PC value (pltpc) saved in %g2 by the jmpl points near the
139 location where we store the link_map pointer for this object. */
140
141 plt[0] = 0x05000000 | ((rfunc >> 10) & 0x003fffff);
142 plt[1] = 0x85c0a000 | (rfunc & 0x3ff);
143 plt[2] = OPCODE_NOP; /* Fill call delay slot. */
144 plt[3] = (Elf32_Addr) l;
145 if (__builtin_expect (l->l_info[VALIDX(DT_GNU_PRELINKED)] != NULL, 0)
146 || __builtin_expect (l->l_info [VALIDX (DT_GNU_LIBLISTSZ)] != NULL, 0))
147 {
148 /* Need to reinitialize .plt to undo prelinking. */
149 Elf32_Rela *rela = (Elf32_Rela *) D_PTR (l, l_info[DT_JMPREL]);
150 Elf32_Rela *relaend
151 = (Elf32_Rela *) ((char *) rela
152 + l->l_info[DT_PLTRELSZ]->d_un.d_val);
153 #if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
154 /* Note that we don't mask the hwcap here, as the flush is
155 essential to functionality on those cpu's that implement it.
156 For sparcv9 we can assume flush is present. */
157 const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
158 #else
159 const int do_flush = 1;
160 #endif
161
162 /* prelink must ensure there are no R_SPARC_NONE relocs left
163 in .rela.plt. */
164 while (rela < relaend)
165 {
166 *(unsigned int *) (rela->r_offset + l->l_addr)
167 = OPCODE_SETHI_G1 | (rela->r_offset + l->l_addr
168 - (Elf32_Addr) plt);
169 *(unsigned int *) (rela->r_offset + l->l_addr + 4)
170 = OPCODE_BA | ((((Elf32_Addr) plt
171 - rela->r_offset - l->l_addr - 4) >> 2)
172 & 0x3fffff);
173 if (do_flush)
174 {
175 __asm __volatile ("flush %0" : : "r" (rela->r_offset
176 + l->l_addr));
177 __asm __volatile ("flush %0+4" : : "r" (rela->r_offset
178 + l->l_addr));
179 }
180 ++rela;
181 }
182 }
183 }
184
185 return lazy;
186 }
187
188 /* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
189 PLT entries should not be allowed to define the value.
190 ELF_RTYPE_CLASS_COPY iff TYPE should not be allowed to resolve to one
191 of the main executable's symbols, as for a COPY reloc. */
192 #define elf_machine_type_class(type) \
193 ((((type) == R_SPARC_JMP_SLOT \
194 || ((type) >= R_SPARC_TLS_GD_HI22 && (type) <= R_SPARC_TLS_TPOFF64)) \
195 * ELF_RTYPE_CLASS_PLT) \
196 | (((type) == R_SPARC_COPY) * ELF_RTYPE_CLASS_COPY))
197
198 /* A reloc type used for ld.so cmdline arg lookups to reject PLT entries. */
199 #define ELF_MACHINE_JMP_SLOT R_SPARC_JMP_SLOT
200
201 /* Undo the sub %sp, 6*4, %sp; add %sp, 22*4, %o0 below to get at the
202 value we want in __libc_stack_end. */
203 #define DL_STACK_END(cookie) \
204 ((void *) (((long) (cookie)) - (22 - 6) * 4))
205
206 /* Initial entry point code for the dynamic linker.
207 The C function `_dl_start' is the real entry point;
208 its return value is the user program's entry point. */
209
210 #define RTLD_GOT_ADDRESS(pic_reg, reg, symbol) \
211 "sethi %gdop_hix22(" #symbol "), " #reg "\n\t" \
212 "xor " #reg ", %gdop_lox10(" #symbol "), " #reg "\n\t" \
213 "ld [" #pic_reg " + " #reg "], " #reg ", %gdop(" #symbol ")"
214
215 #define RTLD_START __asm__ ("\
216 .text\n\
217 .globl _start\n\
218 .type _start, @function\n\
219 .align 32\n\
220 _start:\n\
221 /* Allocate space for functions to drop their arguments. */\n\
222 sub %sp, 6*4, %sp\n\
223 /* Pass pointer to argument block to _dl_start. */\n\
224 call _dl_start\n\
225 add %sp, 22*4, %o0\n\
226 /* FALTHRU */\n\
227 .globl _dl_start_user\n\
228 .type _dl_start_user, @function\n\
229 _dl_start_user:\n\
230 /* Load the PIC register. */\n\
231 1: call 2f\n\
232 sethi %hi(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n\
233 2: or %l7, %lo(_GLOBAL_OFFSET_TABLE_-(1b-.)), %l7\n\
234 add %l7, %o7, %l7\n\
235 /* Save the user entry point address in %l0 */\n\
236 mov %o0, %l0\n\
237 /* See if we were run as a command with the executable file name as an\n\
238 extra leading argument. If so, adjust the contents of the stack. */\n\
239 " RTLD_GOT_ADDRESS(%l7, %g2, _dl_skip_args) "\n\
240 ld [%g2], %i0\n\
241 tst %i0\n\
242 beq 3f\n\
243 ld [%sp+22*4], %i5 /* load argc */\n\
244 /* Find out how far to shift. */\n\
245 " RTLD_GOT_ADDRESS(%l7, %l3, _dl_argv) "\n\
246 sub %i5, %i0, %i5\n\
247 ld [%l3], %l4\n\
248 sll %i0, 2, %i2\n\
249 st %i5, [%sp+22*4]\n\
250 sub %l4, %i2, %l4\n\
251 add %sp, 23*4, %i1\n\
252 add %i1, %i2, %i2\n\
253 st %l4, [%l3]\n\
254 /* Copy down argv */\n\
255 21: ld [%i2], %i3\n\
256 add %i2, 4, %i2\n\
257 tst %i3\n\
258 st %i3, [%i1]\n\
259 bne 21b\n\
260 add %i1, 4, %i1\n\
261 /* Copy down env */\n\
262 22: ld [%i2], %i3\n\
263 add %i2, 4, %i2\n\
264 tst %i3\n\
265 st %i3, [%i1]\n\
266 bne 22b\n\
267 add %i1, 4, %i1\n\
268 /* Copy down auxiliary table. */\n\
269 23: ld [%i2], %i3\n\
270 ld [%i2+4], %i4\n\
271 add %i2, 8, %i2\n\
272 tst %i3\n\
273 st %i3, [%i1]\n\
274 st %i4, [%i1+4]\n\
275 bne 23b\n\
276 add %i1, 8, %i1\n\
277 /* %o0 = _dl_loaded, %o1 = argc, %o2 = argv, %o3 = envp. */\n\
278 3: " RTLD_GOT_ADDRESS(%l7, %o0, _rtld_local) "\n\
279 add %sp, 23*4, %o2\n\
280 sll %i5, 2, %o3\n\
281 add %o3, 4, %o3\n\
282 mov %i5, %o1\n\
283 add %o2, %o3, %o3\n\
284 call _dl_init\n\
285 ld [%o0], %o0\n\
286 /* Pass our finalizer function to the user in %g1. */\n\
287 " RTLD_GOT_ADDRESS(%l7, %g1, _dl_fini) "\n\
288 /* Jump to the user's entry point and deallocate the extra stack we got. */\n\
289 jmp %l0\n\
290 add %sp, 6*4, %sp\n\
291 .size _dl_start_user, . - _dl_start_user\n\
292 .previous");
293
294 static inline Elf32_Addr
elf_machine_fixup_plt(struct link_map * map,lookup_t t,const ElfW (Sym)* refsym,const ElfW (Sym)* sym,const Elf32_Rela * reloc,Elf32_Addr * reloc_addr,Elf32_Addr value)295 elf_machine_fixup_plt (struct link_map *map, lookup_t t,
296 const ElfW(Sym) *refsym, const ElfW(Sym) *sym,
297 const Elf32_Rela *reloc,
298 Elf32_Addr *reloc_addr, Elf32_Addr value)
299 {
300 #ifdef __sparc_v9__
301 /* Sparc v9 can assume flush is always present. */
302 const int do_flush = 1;
303 #else
304 /* Note that we don't mask the hwcap here, as the flush is essential to
305 functionality on those cpu's that implement it. */
306 const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
307 #endif
308 return sparc_fixup_plt (reloc, reloc_addr, value, 1, do_flush);
309 }
310
311 /* Return the final value of a plt relocation. */
312 static inline Elf32_Addr
elf_machine_plt_value(struct link_map * map,const Elf32_Rela * reloc,Elf32_Addr value)313 elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
314 Elf32_Addr value)
315 {
316 return value + reloc->r_addend;
317 }
318
319 #endif /* dl_machine_h */
320
321 #define ARCH_LA_PLTENTER sparc32_gnu_pltenter
322 #define ARCH_LA_PLTEXIT sparc32_gnu_pltexit
323
324 #ifdef RESOLVE_MAP
325
326 /* Perform the relocation specified by RELOC and SYM (which is fully resolved).
327 MAP is the object containing the reloc. */
328
329 static inline void
330 __attribute__ ((always_inline))
elf_machine_rela(struct link_map * map,struct r_scope_elem * scope[],const Elf32_Rela * reloc,const Elf32_Sym * sym,const struct r_found_version * version,void * const reloc_addr_arg,int skip_ifunc)331 elf_machine_rela (struct link_map *map, struct r_scope_elem *scope[],
332 const Elf32_Rela *reloc, const Elf32_Sym *sym,
333 const struct r_found_version *version,
334 void *const reloc_addr_arg, int skip_ifunc)
335 {
336 Elf32_Addr *const reloc_addr = reloc_addr_arg;
337 #if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
338 const Elf32_Sym *const refsym = sym;
339 #endif
340 Elf32_Addr value;
341 const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
342 #if !defined RESOLVE_CONFLICT_FIND_MAP
343 struct link_map *sym_map = NULL;
344 #endif
345
346 #if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
347 /* This is defined in rtld.c, but nowhere in the static libc.a; make the
348 reference weak so static programs can still link. This declaration
349 cannot be done when compiling rtld.c (i.e. #ifdef RTLD_BOOTSTRAP)
350 because rtld.c contains the common defn for _dl_rtld_map, which is
351 incompatible with a weak decl in the same file. */
352 weak_extern (_dl_rtld_map);
353 #endif
354
355 if (__glibc_unlikely (r_type == R_SPARC_NONE))
356 return;
357
358 if (__glibc_unlikely (r_type == R_SPARC_SIZE32))
359 {
360 *reloc_addr = sym->st_size + reloc->r_addend;
361 return;
362 }
363
364 #if !defined RTLD_BOOTSTRAP || !defined HAVE_Z_COMBRELOC
365 if (__glibc_unlikely (r_type == R_SPARC_RELATIVE))
366 {
367 # if !defined RTLD_BOOTSTRAP && !defined HAVE_Z_COMBRELOC
368 if (map != &_dl_rtld_map) /* Already done in rtld itself. */
369 # endif
370 *reloc_addr += map->l_addr + reloc->r_addend;
371 return;
372 }
373 #endif
374
375 #ifndef RESOLVE_CONFLICT_FIND_MAP
376 if (__builtin_expect (ELF32_ST_BIND (sym->st_info) == STB_LOCAL, 0)
377 && sym->st_shndx != SHN_UNDEF)
378 {
379 sym_map = map;
380 value = map->l_addr;
381 }
382 else
383 {
384 sym_map = RESOLVE_MAP (map, scope, &sym, version, r_type);
385 value = SYMBOL_ADDRESS (sym_map, sym, true);
386 }
387 #else
388 value = 0;
389 #endif
390
391 value += reloc->r_addend; /* Assume copy relocs have zero addend. */
392
393 if (sym != NULL
394 && __builtin_expect (ELFW(ST_TYPE) (sym->st_info) == STT_GNU_IFUNC, 0)
395 && __builtin_expect (sym->st_shndx != SHN_UNDEF, 1)
396 && __builtin_expect (!skip_ifunc, 1))
397 {
398 value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
399 }
400
401 switch (r_type)
402 {
403 #if !defined RTLD_BOOTSTRAP && !defined RESOLVE_CONFLICT_FIND_MAP
404 case R_SPARC_COPY:
405 if (sym == NULL)
406 /* This can happen in trace mode if an object could not be
407 found. */
408 break;
409 if (sym->st_size > refsym->st_size
410 || (GLRO(dl_verbose) && sym->st_size < refsym->st_size))
411 {
412 const char *strtab;
413
414 strtab = (const void *) D_PTR (map, l_info[DT_STRTAB]);
415 _dl_error_printf ("\
416 %s: Symbol `%s' has different size in shared object, consider re-linking\n",
417 RTLD_PROGNAME, strtab + refsym->st_name);
418 }
419 memcpy (reloc_addr_arg, (void *) value,
420 MIN (sym->st_size, refsym->st_size));
421 break;
422 #endif
423 case R_SPARC_GLOB_DAT:
424 case R_SPARC_32:
425 *reloc_addr = value;
426 break;
427 case R_SPARC_IRELATIVE:
428 if (__glibc_likely (!skip_ifunc))
429 value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
430 *reloc_addr = value;
431 break;
432 case R_SPARC_JMP_IREL:
433 if (__glibc_likely (!skip_ifunc))
434 value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
435 /* Fall thru */
436 case R_SPARC_JMP_SLOT:
437 {
438 #if !defined RTLD_BOOTSTRAP && !defined __sparc_v9__
439 /* Note that we don't mask the hwcap here, as the flush is
440 essential to functionality on those cpu's that implement
441 it. For sparcv9 we can assume flush is present. */
442 const int do_flush = GLRO(dl_hwcap) & HWCAP_SPARC_FLUSH;
443 #else
444 /* Unfortunately, this is necessary, so that we can ensure
445 ld.so will not execute corrupt PLT entry instructions. */
446 const int do_flush = 1;
447 #endif
448 /* At this point we don't need to bother with thread safety,
449 so we can optimize the first instruction of .plt out. */
450 sparc_fixup_plt (reloc, reloc_addr, value, 0, do_flush);
451 }
452 break;
453 #ifndef RESOLVE_CONFLICT_FIND_MAP
454 case R_SPARC_TLS_DTPMOD32:
455 /* Get the information from the link map returned by the
456 resolv function. */
457 if (sym_map != NULL)
458 *reloc_addr = sym_map->l_tls_modid;
459 break;
460 case R_SPARC_TLS_DTPOFF32:
461 /* During relocation all TLS symbols are defined and used.
462 Therefore the offset is already correct. */
463 *reloc_addr = (sym == NULL ? 0 : sym->st_value) + reloc->r_addend;
464 break;
465 case R_SPARC_TLS_TPOFF32:
466 /* The offset is negative, forward from the thread pointer. */
467 /* We know the offset of object the symbol is contained in.
468 It is a negative value which will be added to the
469 thread pointer. */
470 if (sym != NULL)
471 {
472 CHECK_STATIC_TLS (map, sym_map);
473 *reloc_addr = sym->st_value - sym_map->l_tls_offset
474 + reloc->r_addend;
475 }
476 break;
477 # ifndef RTLD_BOOTSTRAP
478 case R_SPARC_TLS_LE_HIX22:
479 case R_SPARC_TLS_LE_LOX10:
480 if (sym != NULL)
481 {
482 CHECK_STATIC_TLS (map, sym_map);
483 value = sym->st_value - sym_map->l_tls_offset
484 + reloc->r_addend;
485 if (r_type == R_SPARC_TLS_LE_HIX22)
486 *reloc_addr = (*reloc_addr & 0xffc00000) | ((~value) >> 10);
487 else
488 *reloc_addr = (*reloc_addr & 0xffffe000) | (value & 0x3ff)
489 | 0x1c00;
490 }
491 break;
492 # endif
493 #endif
494 #ifndef RTLD_BOOTSTRAP
495 case R_SPARC_8:
496 *(char *) reloc_addr = value;
497 break;
498 case R_SPARC_16:
499 *(short *) reloc_addr = value;
500 break;
501 case R_SPARC_DISP8:
502 *(char *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
503 break;
504 case R_SPARC_DISP16:
505 *(short *) reloc_addr = (value - (Elf32_Addr) reloc_addr);
506 break;
507 case R_SPARC_DISP32:
508 *reloc_addr = (value - (Elf32_Addr) reloc_addr);
509 break;
510 case R_SPARC_LO10:
511 *reloc_addr = (*reloc_addr & ~0x3ff) | (value & 0x3ff);
512 break;
513 case R_SPARC_WDISP30:
514 *reloc_addr = ((*reloc_addr & 0xc0000000)
515 | ((value - (unsigned int) reloc_addr) >> 2));
516 break;
517 case R_SPARC_HI22:
518 *reloc_addr = (*reloc_addr & 0xffc00000) | (value >> 10);
519 break;
520 case R_SPARC_UA16:
521 ((unsigned char *) reloc_addr_arg) [0] = value >> 8;
522 ((unsigned char *) reloc_addr_arg) [1] = value;
523 break;
524 case R_SPARC_UA32:
525 ((unsigned char *) reloc_addr_arg) [0] = value >> 24;
526 ((unsigned char *) reloc_addr_arg) [1] = value >> 16;
527 ((unsigned char *) reloc_addr_arg) [2] = value >> 8;
528 ((unsigned char *) reloc_addr_arg) [3] = value;
529 break;
530 #endif
531 #if !defined RTLD_BOOTSTRAP || defined _NDEBUG
532 default:
533 _dl_reloc_bad_type (map, r_type, 0);
534 break;
535 #endif
536 }
537 }
538
539 static inline void
540 __attribute__ ((always_inline))
elf_machine_rela_relative(Elf32_Addr l_addr,const Elf32_Rela * reloc,void * const reloc_addr_arg)541 elf_machine_rela_relative (Elf32_Addr l_addr, const Elf32_Rela *reloc,
542 void *const reloc_addr_arg)
543 {
544 Elf32_Addr *const reloc_addr = reloc_addr_arg;
545 *reloc_addr += l_addr + reloc->r_addend;
546 }
547
548 static inline void
549 __attribute__ ((always_inline))
elf_machine_lazy_rel(struct link_map * map,struct r_scope_elem * scope[],Elf32_Addr l_addr,const Elf32_Rela * reloc,int skip_ifunc)550 elf_machine_lazy_rel (struct link_map *map, struct r_scope_elem *scope[],
551 Elf32_Addr l_addr, const Elf32_Rela *reloc,
552 int skip_ifunc)
553 {
554 Elf32_Addr *const reloc_addr = (void *) (l_addr + reloc->r_offset);
555 const unsigned int r_type = ELF32_R_TYPE (reloc->r_info);
556
557 if (__glibc_likely (r_type == R_SPARC_JMP_SLOT))
558 ;
559 else if (r_type == R_SPARC_JMP_IREL)
560 {
561 Elf32_Addr value = map->l_addr + reloc->r_addend;
562 if (__glibc_likely (!skip_ifunc))
563 value = ((Elf32_Addr (*) (int)) value) (GLRO(dl_hwcap));
564 sparc_fixup_plt (reloc, reloc_addr, value, 1, 1);
565 }
566 else if (r_type == R_SPARC_NONE)
567 ;
568 else
569 _dl_reloc_bad_type (map, r_type, 1);
570 }
571
572 #endif /* RESOLVE_MAP */
573