about summary refs log tree commit diff
path: root/sysdeps/hppa/dl-machine.h
blob: 9cc10c40f74252598f90a647977e8e2ea4d6489d (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
/* Machine-dependent ELF dynamic relocation inline functions.  PA-RISC version.
   Copyright (C) 1995-1997,1999,2000,2001,2002 Free Software Foundation, Inc.
   Contributed by David Huggins-Daines <dhd@debian.org>
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef dl_machine_h
#define dl_machine_h 1

#define ELF_MACHINE_NAME "hppa"

#include <sys/param.h>
#include <string.h>
#include <link.h>
#include <assert.h>

/* These must match the definition of the stub in bfd/elf32-hppa.c. */
#define SIZEOF_PLT_STUB (4*4)
#define GOT_FROM_PLT_STUB (4*4)

/* A PLABEL is a function descriptor.  Properly they consist of just
   FUNC and GP.  But we want to traverse a binary tree too.  See
   dl-fptr.c for the code (it may be made common between HPPA and
   IA-64 in the future).

   We call these 'fptr' to make it easier to steal code from IA-64. */

/* ld.so currently has 12 PLABEL32 relocs.  We'll keep this constant
   large for now in case we require more, as the rest of these will be
   used by the dynamic program itself (libc.so has quite a few
   PLABEL32 relocs in it). */
#define HPPA_BOOT_FPTR_SIZE	256

struct hppa_fptr
{
  Elf32_Addr func;
  Elf32_Addr gp;
  struct hppa_fptr *next;
};

extern struct hppa_fptr __boot_ldso_fptr[];
extern struct hppa_fptr *__fptr_root;
extern int __fptr_count;

extern Elf32_Addr __hppa_make_fptr (const struct link_map *, Elf32_Addr,
				    struct hppa_fptr **, struct hppa_fptr *);

/* Return nonzero iff ELF header is compatible with the running host.  */
static inline int
elf_machine_matches_host (const Elf32_Ehdr *ehdr)
{
  return ehdr->e_machine == EM_PARISC;
}


/* Return the link-time address of _DYNAMIC.  */
static inline Elf32_Addr
elf_machine_dynamic (void)
{
  Elf32_Addr dynamic;

#if 0
  /* Use this method if GOT address not yet set up.  */
  asm (
"	b,l	1f,%0\n"
"	depi	0,31,2,%0\n"
"1:	addil	L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 8),%0\n"
"	ldw	R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 12)(%%r1),%0\n"
      : "=r" (dynamic) : : "r1");
#else
  /* This works because we already have our GOT address available.  */
  dynamic = (Elf32_Addr) &_DYNAMIC;
#endif

  return dynamic;
}

/* Return the run-time load address of the shared object.  */
static inline Elf32_Addr
elf_machine_load_address (void)
{
  Elf32_Addr dynamic, dynamic_linkaddress;

  asm (
"	b,l	1f,%0\n"
"	depi	0,31,2,%0\n"
"1:	addil	L'_DYNAMIC - ($PIC_pcrel$0 - 8),%0\n"
"	ldo	R'_DYNAMIC - ($PIC_pcrel$0 - 12)(%%r1),%1\n"
"	addil	L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 16),%0\n"
"	ldw	R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 20)(%%r1),%0\n"
   : "=r" (dynamic_linkaddress), "=r" (dynamic) : : "r1");

  return dynamic - dynamic_linkaddress;
}

/* Fixup a PLT entry to bounce directly to the function at VALUE.  */
static inline Elf32_Addr
elf_machine_fixup_plt (struct link_map *map, lookup_t t,
		       const Elf32_Rela *reloc,
		       Elf32_Addr *reloc_addr, Elf32_Addr value)
{
  /* l is the link_map for the caller, t is the link_map for the object
   * being called */
  reloc_addr[1] = D_PTR (t, l_info[DT_PLTGOT]);
  reloc_addr[0] = value;
  /* Return the PLT slot rather than the function value so that the
     trampoline can load the new LTP. */
  return (Elf32_Addr) reloc_addr;
}

/* Return the final value of a plt relocation.  */
static inline Elf32_Addr
elf_machine_plt_value (struct link_map *map, const Elf32_Rela *reloc,
		       Elf32_Addr value)
{
  /* We are rela only */
  return value + reloc->r_addend;
}

/* Set up the loaded object described by L so its unrelocated PLT
   entries will jump to the on-demand fixup code in dl-runtime.c.  */

static inline int
elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
{
  extern void _dl_runtime_resolve (void);
  extern void _dl_runtime_profile (void);
  Elf32_Addr jmprel = D_PTR(l, l_info[DT_JMPREL]);

  if (lazy && jmprel)
    {
      Elf32_Addr *got = NULL;
      Elf32_Addr l_addr;
      Elf32_Addr end_jmprel;
      Elf32_Addr iplt;

      /* Relocate all the PLT slots.  */
      l_addr = l->l_addr;
      end_jmprel = jmprel + l->l_info[DT_PLTRELSZ]->d_un.d_val;
      for (iplt = jmprel; iplt < end_jmprel; iplt += sizeof (Elf32_Rela))
	{
	  const Elf32_Rela *reloc;
	  Elf32_Word r_type;
	  Elf32_Word r_sym;
	  struct hppa_fptr *fptr;

	  reloc = (const Elf32_Rela *) iplt;
	  r_type = ELF32_R_TYPE (reloc->r_info);
	  r_sym = ELF32_R_SYM (reloc->r_info);

	  if (__builtin_expect (r_type == R_PARISC_IPLT, 1))
	    {
	      fptr = (struct hppa_fptr *) (reloc->r_offset + l_addr);
	      if (r_sym != 0)
		{
		  /* Relocate the pointer to the stub.  */
		  fptr->func += l_addr;
		  /* Instead of the LTP value, we put the reloc offset
		     here.  The trampoline code will load the proper
		     LTP and pass the reloc offset to the fixup
		     function.  */
		  fptr->gp = iplt - jmprel;
		  if (!got)
		    {
		      static union {
			unsigned char c[8];
			Elf32_Addr i[2];
		      } sig = {{0x00,0xc0,0xff,0xee, 0xde,0xad,0xbe,0xef}};

		      /* Find our .got section.  It's right after the
			 stub.  */
		      got = (Elf32_Addr *) (fptr->func + GOT_FROM_PLT_STUB);

		      /* Sanity check to see if the address we are
                         going to check below is within a reasonable
                         approximation of the bounds of the PLT (or,
                         at least, is at an address that won't fault
                         on read).  Then check for the magic signature
                         above. */
		      if (fptr->func < (Elf32_Addr) fptr + sizeof(*fptr))
			  return 0;
		      if (fptr->func >
			  ((Elf32_Addr) fptr
			   + SIZEOF_PLT_STUB
			   + ((l->l_info[DT_PLTRELSZ]->d_un.d_val / sizeof (Elf32_Rela))
			      * 8)))
			return 0;
		      if (got[-2] != sig.i[0] || got[-1] != sig.i[1])
			return 0; /* No lazy linking for you! */
		    }
		}
	      else
		{
		  /* Relocate this *ABS* entry.  */
		  fptr->func = reloc->r_addend + l_addr;
		  fptr->gp = D_PTR (l, l_info[DT_PLTGOT]);
		}
	    }
	  else if (__builtin_expect (r_type != R_PARISC_NONE, 0))
	    _dl_reloc_bad_type (l, r_type, 1);
	}

      if (got)
	{
	  register Elf32_Addr ltp __asm__ ("%r19");
	  /* Identify this shared object. */
	  got[1] = (Elf32_Addr) l;

	  /* This function will be called to perform the relocation. */
	  if (__builtin_expect (!profile, 1))
	    got[-2] =
	      (Elf32_Addr) ((struct hppa_fptr *)
			    ((unsigned long) &_dl_runtime_resolve & ~3))->func;
	  else
	    {
	      if (_dl_name_match_p (GL(dl_profile), l))
		{
		  /* This is the object we are looking for.  Say that
		     we really want profiling and the timers are
		     started.  */
		  GL(dl_profile_map) = l;
		}
	      got[-2] =
		(Elf32_Addr) ((struct hppa_fptr *)
			      ((unsigned long) &_dl_runtime_profile & ~3))->func;
	    }
	  got[-1] = ltp;
	}
    }
  return lazy;
}

/* Initial entry point code for the dynamic linker.
   The C function `_dl_start' is the real entry point;
   its return value is the user program's entry point.  */

#define RTLD_START \
/* Set up dp for any non-PIC lib constructors that may be called.  */	\
static struct link_map *						\
set_dp (struct link_map *map)						\
{									\
  register Elf32_Addr dp asm ("%r27");					\
  dp = D_PTR (map, l_info[DT_PLTGOT]);					\
  asm volatile ("" : : "r" (dp));					\
  return map;								\
}									\
									\
asm (									\
"	.text\n"							\
"	.globl _start\n"						\
"	.type _start,@function\n"					\
"_start:\n"								\
	/* The kernel does not give us an initial stack frame. */	\
"	ldo	64(%sp),%sp\n"						\
	/* Save the relevant arguments (yes, those are the correct	\
	   registers, the kernel is weird) in their stack slots. */	\
"	stw	%r25,-40(%sp)\n" /* argc */				\
"	stw	%r24,-44(%sp)\n" /* argv */				\
									\
	/* We need the LTP, and we need it now. */			\
	/* $PIC_pcrel$0 points 8 bytes past the current instruction,	\
	   just like a branch reloc.  This sequence gets us the runtime	\
	   address of _DYNAMIC. */					\
"	bl	0f,%r19\n"						\
"	depi	0,31,2,%r19\n"	/* clear priviledge bits */		\
"0:	addil	L'_DYNAMIC - ($PIC_pcrel$0 - 8),%r19\n"			\
"	ldo	R'_DYNAMIC - ($PIC_pcrel$0 - 12)(%r1),%r26\n"		\
									\
	/* Also get the link time address from the first entry of the GOT.  */ \
"	addil	L'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 16),%r19\n"	\
"	ldw	R'_GLOBAL_OFFSET_TABLE_ - ($PIC_pcrel$0 - 20)(%r1),%r20\n" \
									\
"	sub	%r26,%r20,%r20\n"	/* Calculate load offset */	\
									\
	/* Rummage through the dynamic entries, looking for DT_PLTGOT.  */ \
"	ldw,ma	8(%r26),%r19\n"						\
"1:	cmpib,=,n 3,%r19,2f\n"	/* tag == DT_PLTGOT? */			\
"	cmpib,<>,n 0,%r19,1b\n"						\
"	ldw,ma	8(%r26),%r19\n"						\
									\
	/* Uh oh!  We didn't find one.  Abort. */			\
"	iitlbp	%r0,(%r0)\n"						\
									\
"2:	ldw	-4(%r26),%r19\n"	/* Found it, load value. */	\
"	add	%r19,%r20,%r19\n"	/* And add the load offset. */	\
									\
	/* Our initial stack layout is rather different from everyone	\
	   else's due to the unique PA-RISC ABI.  As far as I know it	\
	   looks like this:						\
									\
	   -----------------------------------  (this frame created above) \
	   |         32 bytes of magic       |				\
	   |---------------------------------|				\
	   | 32 bytes argument/sp save area  |				\
	   |---------------------------------|  ((current->mm->env_end) + 63 & ~63) \
	   |         N bytes of slack        |				\
	   |---------------------------------|				\
	   |      envvar and arg strings     |				\
	   |---------------------------------|				\
	   |	    ELF auxiliary info	     |				\
	   |         (up to 28 words)        |				\
	   |---------------------------------|				\
	   |  Environment variable pointers  |				\
	   |         upwards to NULL	     |				\
	   |---------------------------------|				\
	   |        Argument pointers        |				\
	   |         upwards to NULL	     |				\
	   |---------------------------------|				\
	   |          argc (1 word)          |				\
	   -----------------------------------				\
									\
	  So, obviously, we can't just pass %sp to _dl_start.  That's	\
	  okay, argv-4 will do just fine.				\
									\
	  The pleasant part of this is that if we need to skip		\
	  arguments we can just decrement argc and move argv, because	\
	  the stack pointer is utterly unrelated to the location of	\
	  the environment and argument vectors. */			\
									\
	/* This is always within range so we'll be okay. */		\
"	bl	_dl_start,%rp\n"					\
"	ldo	-4(%r24),%r26\n"					\
									\
"	.globl _dl_start_user\n"					\
"	.type _dl_start_user,@function\n"				\
"_dl_start_user:\n"							\
	/* Save the entry point in %r3. */				\
"	copy	%ret0,%r3\n"						\
									\
	/* Remember the lowest stack address. */			\
"	addil	LT'__libc_stack_end,%r19\n"				\
"	ldw	RT'__libc_stack_end(%r1),%r20\n"			\
"	stw	%sp,0(%r20)\n"						\
									\
	/* See if we were called as a command with the executable file	\
	   name as an extra leading argument. */			\
"	addil	LT'_dl_skip_args,%r19\n"				\
"	ldw	RT'_dl_skip_args(%r1),%r20\n"				\
"	ldw	0(%r20),%r20\n"						\
									\
"	ldw	-40(%sp),%r25\n"	/* argc */			\
"	comib,=	0,%r20,.Lnofix\n"	/* FIXME: will be mispredicted */ \
"	ldw	-44(%sp),%r24\n"	/* argv (delay slot) */		\
									\
"	sub	%r25,%r20,%r25\n"					\
"	stw	%r25,-40(%sp)\n"					\
"	sh2add	%r20,%r24,%r24\n"					\
"	stw	%r24,-44(%sp)\n"					\
									\
".Lnofix:\n"								\
"	addil	LT'_rtld_local,%r19\n"					\
"	ldw	RT'_rtld_local(%r1),%r26\n"				\
"	bl	set_dp, %r2\n"						\
"	ldw	0(%r26),%r26\n"						\
									\
	/* Call _dl_init(_dl_loaded, argc, argv, envp). */		\
"	copy	%r28,%r26\n"						\
									\
	/* envp = argv + argc + 1 */					\
"	sh2add	%r25,%r24,%r23\n"					\
"	bl	_dl_init_internal,%r2\n"				\
"	ldo	4(%r23),%r23\n"	/* delay slot */			\
									\
	/* Reload argc, argv  to the registers start.S expects them in (feh) */ \
"	ldw	-40(%sp),%r25\n"					\
"	ldw	-44(%sp),%r24\n"					\
									\
	/* _dl_fini does have a PLT slot now.  I don't know how to get	\
	   to it though, so this hack will remain. */			\
"	.section .data\n"						\
"__dl_fini_plabel:\n"							\
"	.word	_dl_fini\n"						\
"	.word	0xdeadbeef\n"						\
"	.previous\n"							\
									\
	/* %r3 contains a function pointer, we need to mask out the lower \
	 * bits and load the gp and jump address. */			\
"	depi	0,31,2,%r3\n"						\
"	ldw	0(%r3),%r2\n"						\
"	addil	LT'__dl_fini_plabel,%r19\n"				\
"	ldw	RT'__dl_fini_plabel(%r1),%r23\n"			\
"	stw	%r19,4(%r23)\n"						\
"	ldw	4(%r3),%r19\n"	/* load the object's gp */		\
"	bv	%r0(%r2)\n"						\
"	depi	2,31,2,%r23\n"	/* delay slot */			\
	);


/* This code gets called via the .plt stub, and is used in
   dl-runtime.c to call the `fixup' function and then redirect to the
   address it returns.
   Enter with r19 = reloc offset, r20 = got-8, r21 = fixup ltp.  */
#define TRAMPOLINE_TEMPLATE(tramp_name, fixup_name) \
  extern void tramp_name (void);		    \
  asm ( "\
	/* Trampoline for " #tramp_name " */				    \n\
	.globl " #tramp_name "						    \n\
	.type " #tramp_name ",@function					    \n\
" #tramp_name ":							    \n\
	/* Save return pointer */					    \n\
	stw	%r2,-20(%sp)						    \n\
	/* Save argument registers in the call stack frame. */		    \n\
	stw	%r26,-36(%sp)						    \n\
	stw	%r25,-40(%sp)						    \n\
	stw	%r24,-44(%sp)						    \n\
	stw	%r23,-48(%sp)						    \n\
	/* Build a call frame. */					    \n\
	stwm	%sp,64(%sp)						    \n\
									    \n\
	/* Set up args to fixup func.  */				    \n\
	ldw	8+4(%r20),%r26	/* got[1] == struct link_map *  */	    \n\
	copy	%r19,%r25	/* reloc offset  */			    \n\
									    \n\
	/* Call the real address resolver. */				    \n\
	bl	" #fixup_name ",%r2					    \n\
	copy	%r21,%r19	/* delay slot, set fixup func ltp */	    \n\
									    \n\
	ldwm	-64(%sp),%sp						    \n\
	/* Arguments. */						    \n\
	ldw	-36(%sp),%r26						    \n\
	ldw	-40(%sp),%r25						    \n\
	ldw	-44(%sp),%r24						    \n\
	ldw	-48(%sp),%r23						    \n\
	/* Return pointer. */						    \n\
	ldw	-20(%sp),%r2						    \n\
	/* Call the real function. */					    \n\
	ldw	0(%r28),%r22						    \n\
	bv	%r0(%r22)						    \n\
	ldw	4(%r28),%r19						    \n\
");

#ifndef PROF
#define ELF_MACHINE_RUNTIME_TRAMPOLINE			\
  TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup);	\
  TRAMPOLINE_TEMPLATE (_dl_runtime_profile, profile_fixup);
#else
#define ELF_MACHINE_RUNTIME_TRAMPOLINE			\
  TRAMPOLINE_TEMPLATE (_dl_runtime_resolve, fixup);	\
  strong_alias (_dl_runtime_resolve, _dl_runtime_profile);
#endif


/* ELF_RTYPE_CLASS_PLT iff TYPE describes relocation of a PLT entry, so
   PLT entries should not be allowed to define the value.
   ELF_RTYPE_CLASS_NOCOPY iff TYPE should not be allowed to resolve to one
   of the main executable's symbols, as for a COPY reloc.  */
#define elf_machine_type_class(type) \
  ((((type) == R_PARISC_IPLT || (type) == R_PARISC_EPLT)	\
    * ELF_RTYPE_CLASS_PLT)					\
   | (((type) == R_PARISC_COPY) * ELF_RTYPE_CLASS_COPY))

/* Used by ld.so for ... something ... */
#define ELF_MACHINE_JMP_SLOT R_PARISC_IPLT

/* We only use RELA. */
#define ELF_MACHINE_NO_REL 1

/* Return the address of the entry point. */
#define ELF_MACHINE_START_ADDRESS(map, start) \
  DL_FUNCTION_ADDRESS (map, start)

#endif /* !dl_machine_h */

/* These are only actually used where RESOLVE_MAP is defined, anyway. */
#ifdef RESOLVE_MAP

static inline void
elf_machine_rela (struct link_map *map, const Elf32_Rela *reloc,
		  const Elf32_Sym *sym, const struct r_found_version *version,
		  Elf32_Addr *const reloc_addr)
{
  const Elf32_Sym *const refsym = sym;
  unsigned long const r_type = ELF32_R_TYPE (reloc->r_info);
  struct link_map *sym_map;
  Elf32_Addr value;

#if !defined RTLD_BOOTSTRAP && !defined SHARED
  /* This is defined in rtld.c, but nowhere in the static libc.a; make the
     reference weak so static programs can still link.  This declaration
     cannot be done when compiling rtld.c (i.e.  #ifdef RTLD_BOOTSTRAP)
     because rtld.c contains the common defn for _dl_rtld_map, which is
     incompatible with a weak decl in the same file.  */
  weak_extern (GL(dl_rtld_map));
#endif

  /* RESOLVE_MAP will return a null value for undefined syms, and
     non-null for all other syms.  In particular, relocs with no
     symbol (symbol index of zero), also called *ABS* relocs, will be
     resolved to MAP.  (The first entry in a symbol table is all
     zeros, and an all zero Elf32_Sym has a binding of STB_LOCAL.)
     See RESOLVE_MAP definition in elf/dl-reloc.c  */
#ifdef RTLD_BOOTSTRAP
  /* RESOLVE_MAP in rtld.c doesn't have the local sym test.  */
  sym_map = (ELF32_ST_BIND (sym->st_info) != STB_LOCAL
	     ? RESOLVE_MAP (&sym, version, r_type) : map);
#else
  sym_map = RESOLVE_MAP (&sym, version, r_type);
#endif
  if (sym_map)
    {
      value = sym ? sym_map->l_addr + sym->st_value : 0;
      value += reloc->r_addend;
    }
  else
    value = 0;

  switch (r_type)
    {
    case R_PARISC_DIR32:
#ifndef RTLD_BOOTSTRAP
      /* All hell breaks loose if we try to relocate these twice,
         because any initialized variables in ld.so that refer to
         other ones will have their values reset.  In particular,
         __fptr_next will be reset, sometimes causing endless loops in
         __hppa_make_fptr().  So don't do that. */
      if (map == &GL(dl_rtld_map))
	return;
#endif
      /* .eh_frame can have unaligned relocs.  */
      if ((unsigned long) reloc_addr & 3)
	{
	  char *rel_addr = (char *) reloc_addr;
	  rel_addr[0] = value >> 24;
	  rel_addr[1] = value >> 16;
	  rel_addr[2] = value >> 8;
	  rel_addr[3] = value;
	  return;
	}
      break;

    case R_PARISC_PLABEL32:
      /* Easy rule: If there is a symbol and it is global, then we
         need to make a dynamic function descriptor.  Otherwise we
         have the address of a PLT slot for a local symbol which we
         know to be unique. */
      if (sym == NULL
	  || sym_map == NULL
	  || ELF32_ST_BIND (sym->st_info) == STB_LOCAL)
	break;

      /* Okay, we need to make ourselves a PLABEL then.  See the IA64
         code for an explanation of how this works.  */
#ifndef RTLD_BOOTSTRAP
      value = __hppa_make_fptr (sym_map, value, &__fptr_root, NULL);
#else
      {
	struct hppa_fptr *p_boot_ldso_fptr;
	struct hppa_fptr **p_fptr_root;
	int *p_fptr_count;
	unsigned long dot;

	/* Go from the top of __boot_ldso_fptr.  As on IA64, we
	   probably haven't relocated the necessary values by this
	   point so we have to find them ourselves. */

	asm ("bl	0f,%0						    \n\
	      depi	0,31,2,%0					    \n\
0:	      addil	L'__boot_ldso_fptr - ($PIC_pcrel$0 - 8),%0	    \n\
	      ldo	R'__boot_ldso_fptr - ($PIC_pcrel$0 - 12)(%%r1),%1   \n\
	      addil	L'__fptr_root - ($PIC_pcrel$0 - 16),%0		    \n\
	      ldo	R'__fptr_root - ($PIC_pcrel$0 - 20)(%%r1),%2	    \n\
	      addil	L'__fptr_count - ($PIC_pcrel$0 - 24),%0		    \n\
	      ldo	R'__fptr_count - ($PIC_pcrel$0 - 28)(%%r1),%3"
	     :
	     "=r" (dot),
	     "=r" (p_boot_ldso_fptr),
	     "=r" (p_fptr_root),
	     "=r" (p_fptr_count));

	value = __hppa_make_fptr (sym_map, value, p_fptr_root,
				  &p_boot_ldso_fptr[--*p_fptr_count]);
      }
#endif
      break;

    case R_PARISC_IPLT:
      if (__builtin_expect (sym_map != NULL, 1))
	elf_machine_fixup_plt (NULL, sym_map, reloc, reloc_addr, value);
      else
	{
	  /* If we get here, it's a (weak) undefined sym.  */
	  elf_machine_fixup_plt (NULL, map, reloc, reloc_addr, value);
	}
      return;

    case R_PARISC_COPY:
      if (__builtin_expect (sym == NULL, 0))
	/* This can happen in trace mode if an object could not be
	   found.  */
	break;
      if (__builtin_expect (sym->st_size > refsym->st_size, 0)
	  || (__builtin_expect (sym->st_size < refsym->st_size, 0)
	      && __builtin_expect (GL(dl_verbose), 0)))
	{
	  const char *strtab;

	  strtab = (const char *) D_PTR (map, l_info[DT_STRTAB]);
	  _dl_error_printf ("\
%s: Symbol `%s' has different size in shared object, consider re-linking\n",
			    rtld_progname ?: "<program name unknown>",
			    strtab + refsym->st_name);
	}
      memcpy (reloc_addr, (void *) value,
	      MIN (sym->st_size, refsym->st_size));
      return;

    case R_PARISC_NONE:	/* Alright, Wilbur. */
      return;

    default:
      _dl_reloc_bad_type (map, r_type, 0);
    }

  *reloc_addr = value;
}

#define DO_ELF_MACHINE_REL_RELATIVE(map, l_addr, relative) \
  elf_machine_rel_relative (map, l_addr, relative,			      \
			    (void *) (l_addr + relative->r_offset))

/* hppa doesn't have an R_PARISC_RELATIVE reloc, but uses relocs with
   ELF32_R_SYM (info) == 0 for a similar purpose.  */
static inline void
elf_machine_rela_relative (struct link_map *map, Elf32_Addr l_addr,
			   const Elf32_Rela *reloc,
			   Elf32_Addr *const reloc_addr)
{
  unsigned long const r_type = ELF32_R_TYPE (reloc->r_info);
  Elf32_Addr value;

  value = l_addr + reloc->r_addend;

  if (ELF32_R_SYM (reloc->r_info) != 0)
    asm volatile ("iitlbp	%r0,(%r0)");  /* Crash. */

  switch (r_type)
    {
    case R_PARISC_DIR32:
      /* .eh_frame can have unaligned relocs.  */
      if ((unsigned long) reloc_addr & 3)
	{
	  char *rel_addr = (char *) reloc_addr;
	  rel_addr[0] = value >> 24;
	  rel_addr[1] = value >> 16;
	  rel_addr[2] = value >> 8;
	  rel_addr[3] = value;
	  return;
	}
      break;

    case R_PARISC_PLABEL32:
      break;

    case R_PARISC_IPLT:
      elf_machine_fixup_plt (NULL, map, reloc, reloc_addr, value);
      return;

    case R_PARISC_NONE:
      return;

    default:
      _dl_reloc_bad_type (map, r_type, 0);
    }

  *reloc_addr = value;
}

static inline void
elf_machine_lazy_rel (struct link_map *map,
		      Elf32_Addr l_addr, const Elf32_Rela *reloc)
{
  /* We don't have anything to do here.  elf_machine_runtime_setup has
     done all the relocs already.  */
}

#endif /* RESOLVE_MAP */