1 /* M32R-specific support for 32-bit ELF.
2    Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3    2006 Free Software Foundation, Inc.
4 
5    This file is part of BFD, the Binary File Descriptor library.
6 
7    This program is free software; you can redistribute it and/or modify
8    it under the terms of the GNU General Public License as published by
9    the Free Software Foundation; either version 2 of the License, or
10    (at your option) any later version.
11 
12    This program is distributed in the hope that it will be useful,
13    but WITHOUT ANY WARRANTY; without even the implied warranty of
14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15    GNU General Public License for more details.
16 
17    You should have received a copy of the GNU General Public License
18    along with this program; if not, write to the Free Software
19    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
20 
21 #include "bfd.h"
22 #include "sysdep.h"
23 #include "libbfd.h"
24 #include "elf-bfd.h"
25 #include "elf/m32r.h"
26 
27 #define NOP_INSN		0x7000
28 #define MAKE_PARALLEL(insn)	((insn) | 0x8000)
29 
30 /* Use REL instead of RELA to save space.
31    This only saves space in libraries and object files, but perhaps
32    relocs will be put in ROM?  All in all though, REL relocs are a pain
33    to work with.  */
34 /* #define USE_REL	1
35 
36 #ifndef USE_REL
37 #define USE_REL	0
38 #endif */
39 /* Use RELA. But use REL to link old objects for backwords compatibility.  */
40 
41 /* Functions for the M32R ELF linker.  */
42 
43 /* The name of the dynamic interpreter.  This is put in the .interp
44    section.  */
45 
46 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1"
47 
48 /* The nop opcode we use.  */
49 
50 #define M32R_NOP 0x7000f000
51 
52 #define PLT_EMPTY   0x10101010  /* RIE  -> RIE */
53 
54 /* The size in bytes of an entry in the procedure linkage table.  */
55 
56 #define PLT_ENTRY_SIZE 20
57 #define PLT_HEADER_SIZE 20
58 
59 /* The first one entries in a procedure linkage table are reserved,
60    and the initial contents are unimportant (we zero them out).
61    Subsequent entries look like this. */
62 
63 #define PLT0_ENTRY_WORD0  0xd6c00000    /* seth r6, #high(.got+4)          */
64 #define PLT0_ENTRY_WORD1  0x86e60000    /* or3  r6, r6, #low(.got)+4)      */
65 #define PLT0_ENTRY_WORD2  0x24e626c6    /* ld   r4, @r6+    -> ld r6, @r6  */
66 #define PLT0_ENTRY_WORD3  0x1fc6f000    /* jmp  r6          || pnop        */
67 #define PLT0_ENTRY_WORD4  PLT_EMPTY     /* RIE             -> RIE          */
68 
69 #define PLT0_PIC_ENTRY_WORD0  0xa4cc0004 /* ld   r4, @(4,r12)              */
70 #define PLT0_PIC_ENTRY_WORD1  0xa6cc0008 /* ld   r6, @(8,r12)              */
71 #define PLT0_PIC_ENTRY_WORD2  0x1fc6f000 /* jmp  r6         || nop         */
72 #define PLT0_PIC_ENTRY_WORD3  PLT_EMPTY  /* RIE             -> RIE         */
73 #define PLT0_PIC_ENTRY_WORD4  PLT_EMPTY  /* RIE             -> RIE         */
74 
75 #define PLT_ENTRY_WORD0  0xe6000000 /* ld24 r6, .name_in_GOT                */
76 #define PLT_ENTRY_WORD1  0x06acf000 /* add  r6, r12          || nop         */
77 #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT)         */
78 #define PLT_ENTRY_WORD1b 0x86e60000 /* or3  r6, r6, #low(.name_in_GOT)      */
79 #define PLT_ENTRY_WORD2  0x26c61fc6 /* ld  r6, @r6           -> jmp r6      */
80 #define PLT_ENTRY_WORD3  0xe5000000 /* ld24 r5, $offset                     */
81 #define PLT_ENTRY_WORD4  0xff000000 /* bra  .plt0.                          */
82 
83 
84 /* Utility to actually perform an R_M32R_10_PCREL reloc.  */
85 
86 static bfd_reloc_status_type
m32r_elf_do_10_pcrel_reloc(bfd * abfd,reloc_howto_type * howto,asection * input_section,bfd_byte * data,bfd_vma offset,asection * symbol_section ATTRIBUTE_UNUSED,bfd_vma symbol_value,bfd_vma addend)87 m32r_elf_do_10_pcrel_reloc (bfd *abfd,
88 			    reloc_howto_type *howto,
89 			    asection *input_section,
90 			    bfd_byte *data,
91 			    bfd_vma offset,
92 			    asection *symbol_section ATTRIBUTE_UNUSED,
93 			    bfd_vma symbol_value,
94 			    bfd_vma addend)
95 {
96   bfd_signed_vma relocation;
97   unsigned long x;
98   bfd_reloc_status_type status;
99 
100   /* Sanity check the address (offset in section).  */
101   if (offset > bfd_get_section_limit (abfd, input_section))
102     return bfd_reloc_outofrange;
103 
104   relocation = symbol_value + addend;
105   /* Make it pc relative.  */
106   relocation -=	(input_section->output_section->vma
107 		 + input_section->output_offset);
108   /* These jumps mask off the lower two bits of the current address
109      before doing pcrel calculations.  */
110   relocation -= (offset & -(bfd_vma) 4);
111 
112   if (relocation < -0x200 || relocation > 0x1ff)
113     status = bfd_reloc_overflow;
114   else
115     status = bfd_reloc_ok;
116 
117   x = bfd_get_16 (abfd, data + offset);
118   relocation >>= howto->rightshift;
119   relocation <<= howto->bitpos;
120   x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask);
121   bfd_put_16 (abfd, (bfd_vma) x, data + offset);
122 
123   return status;
124 }
125 
126 /* Handle the R_M32R_10_PCREL reloc.  */
127 
128 static bfd_reloc_status_type
m32r_elf_10_pcrel_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)129 m32r_elf_10_pcrel_reloc (bfd * abfd,
130 			 arelent * reloc_entry,
131 			 asymbol * symbol,
132 			 void * data,
133 			 asection * input_section,
134 			 bfd * output_bfd,
135 			 char ** error_message ATTRIBUTE_UNUSED)
136 {
137   /* This part is from bfd_elf_generic_reloc.  */
138   if (output_bfd != NULL
139       && (symbol->flags & BSF_SECTION_SYM) == 0
140       && (! reloc_entry->howto->partial_inplace
141 	  || reloc_entry->addend == 0))
142     {
143       reloc_entry->address += input_section->output_offset;
144       return bfd_reloc_ok;
145     }
146 
147   if (output_bfd != NULL)
148     /* FIXME: See bfd_perform_relocation.  Is this right?  */
149     return bfd_reloc_continue;
150 
151   return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto,
152 				     input_section,
153 				     data, reloc_entry->address,
154 				     symbol->section,
155 				     (symbol->value
156 				      + symbol->section->output_section->vma
157 				      + symbol->section->output_offset),
158 				     reloc_entry->addend);
159 }
160 
161 /* Do generic partial_inplace relocation.
162    This is a local replacement for bfd_elf_generic_reloc.  */
163 
164 static bfd_reloc_status_type
m32r_elf_generic_reloc(bfd * input_bfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)165 m32r_elf_generic_reloc (bfd *input_bfd,
166 			arelent *reloc_entry,
167 			asymbol *symbol,
168 			void * data,
169 			asection *input_section,
170 			bfd *output_bfd,
171 			char **error_message ATTRIBUTE_UNUSED)
172 {
173   bfd_reloc_status_type ret;
174   bfd_vma relocation;
175   bfd_byte *inplace_address;
176 
177   /* This part is from bfd_elf_generic_reloc.
178      If we're relocating, and this an external symbol, we don't want
179      to change anything.  */
180   if (output_bfd != NULL
181       && (symbol->flags & BSF_SECTION_SYM) == 0
182       && reloc_entry->addend == 0)
183     {
184       reloc_entry->address += input_section->output_offset;
185       return bfd_reloc_ok;
186     }
187 
188   /* Now do the reloc in the usual way.
189      ??? It would be nice to call bfd_elf_generic_reloc here,
190      but we have partial_inplace set.  bfd_elf_generic_reloc will
191      pass the handling back to bfd_install_relocation which will install
192      a section relative addend which is wrong.  */
193 
194   /* Sanity check the address (offset in section).  */
195   if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
196     return bfd_reloc_outofrange;
197 
198   ret = bfd_reloc_ok;
199   if (bfd_is_und_section (symbol->section)
200       && output_bfd == NULL)
201     ret = bfd_reloc_undefined;
202 
203   if (bfd_is_com_section (symbol->section)
204       || output_bfd != NULL)
205     relocation = 0;
206   else
207     relocation = symbol->value;
208 
209   /* Only do this for a final link.  */
210   if (output_bfd == NULL)
211     {
212       relocation += symbol->section->output_section->vma;
213       relocation += symbol->section->output_offset;
214     }
215 
216   relocation += reloc_entry->addend;
217   inplace_address = (bfd_byte *) data + reloc_entry->address;
218 
219 #define DOIT(x) 					\
220   x = ( (x & ~reloc_entry->howto->dst_mask) | 		\
221   (((x & reloc_entry->howto->src_mask) +  relocation) &	\
222   reloc_entry->howto->dst_mask))
223 
224   switch (reloc_entry->howto->size)
225     {
226     case 1:
227       {
228 	short x = bfd_get_16 (input_bfd, inplace_address);
229 	DOIT (x);
230       	bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address);
231       }
232       break;
233     case 2:
234       {
235 	unsigned long x = bfd_get_32 (input_bfd, inplace_address);
236 	DOIT (x);
237       	bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address);
238       }
239       break;
240     default:
241       BFD_ASSERT (0);
242     }
243 
244   if (output_bfd != NULL)
245     reloc_entry->address += input_section->output_offset;
246 
247   return ret;
248 }
249 
250 /* Handle the R_M32R_SDA16 reloc.
251    This reloc is used to compute the address of objects in the small data area
252    and to perform loads and stores from that area.
253    The lower 16 bits are sign extended and added to the register specified
254    in the instruction, which is assumed to point to _SDA_BASE_.  */
255 
256 static bfd_reloc_status_type
m32r_elf_sda16_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry,asymbol * symbol,void * data ATTRIBUTE_UNUSED,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)257 m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
258 		      arelent *reloc_entry,
259 		      asymbol *symbol,
260 		      void * data ATTRIBUTE_UNUSED,
261 		      asection *input_section,
262 		      bfd *output_bfd,
263 		      char **error_message ATTRIBUTE_UNUSED)
264 {
265   /* This part is from bfd_elf_generic_reloc.  */
266   if (output_bfd != NULL
267       && (symbol->flags & BSF_SECTION_SYM) == 0
268       && (! reloc_entry->howto->partial_inplace
269 	  || reloc_entry->addend == 0))
270     {
271       reloc_entry->address += input_section->output_offset;
272       return bfd_reloc_ok;
273     }
274 
275   if (output_bfd != NULL)
276     /* FIXME: See bfd_perform_relocation.  Is this right?  */
277     return bfd_reloc_continue;
278 
279   /* FIXME: not sure what to do here yet.  But then again, the linker
280      may never call us.  */
281   abort ();
282 }
283 
284 
285 /* Handle the R_M32R_HI16_[SU]LO relocs.
286    HI16_SLO is for the add3 and load/store with displacement instructions.
287    HI16_ULO is for the or3 instruction.
288    For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to
289    the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
290    we must add one to the high 16 bytes (which will get subtracted off when
291    the low 16 bits are added).
292    These relocs have to be done in combination with an R_M32R_LO16 reloc
293    because there is a carry from the LO16 to the HI16.  Here we just save
294    the information we need; we do the actual relocation when we see the LO16.
295    This code is copied from the elf32-mips.c.  We also support an arbitrary
296    number of HI16 relocs to be associated with a single LO16 reloc.  The
297    assembler sorts the relocs to ensure each HI16 immediately precedes its
298    LO16.  However if there are multiple copies, the assembler may not find
299    the real LO16 so it picks the first one it finds.  */
300 
301 struct m32r_hi16
302 {
303   struct m32r_hi16 *next;
304   bfd_byte *addr;
305   bfd_vma addend;
306 };
307 
308 /* FIXME: This should not be a static variable.  */
309 
310 static struct m32r_hi16 *m32r_hi16_list;
311 
312 static bfd_reloc_status_type
m32r_elf_hi16_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)313 m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED,
314 		     arelent *reloc_entry,
315 		     asymbol *symbol,
316 		     void * data,
317 		     asection *input_section,
318 		     bfd *output_bfd,
319 		     char **error_message ATTRIBUTE_UNUSED)
320 {
321   bfd_reloc_status_type ret;
322   bfd_vma relocation;
323   struct m32r_hi16 *n;
324 
325   /* This part is from bfd_elf_generic_reloc.
326      If we're relocating, and this an external symbol, we don't want
327      to change anything.  */
328   if (output_bfd != NULL
329       && (symbol->flags & BSF_SECTION_SYM) == 0
330       && reloc_entry->addend == 0)
331     {
332       reloc_entry->address += input_section->output_offset;
333       return bfd_reloc_ok;
334     }
335 
336   /* Sanity check the address (offset in section).  */
337   if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
338     return bfd_reloc_outofrange;
339 
340   ret = bfd_reloc_ok;
341   if (bfd_is_und_section (symbol->section)
342       && output_bfd == NULL)
343     ret = bfd_reloc_undefined;
344 
345   if (bfd_is_com_section (symbol->section))
346     relocation = 0;
347   else
348     relocation = symbol->value;
349 
350   relocation += symbol->section->output_section->vma;
351   relocation += symbol->section->output_offset;
352   relocation += reloc_entry->addend;
353 
354   /* Save the information, and let LO16 do the actual relocation.  */
355   n = bfd_malloc ((bfd_size_type) sizeof *n);
356   if (n == NULL)
357     return bfd_reloc_outofrange;
358   n->addr = (bfd_byte *) data + reloc_entry->address;
359   n->addend = relocation;
360   n->next = m32r_hi16_list;
361   m32r_hi16_list = n;
362 
363   if (output_bfd != NULL)
364     reloc_entry->address += input_section->output_offset;
365 
366   return ret;
367 }
368 
369 /* Handle an M32R ELF HI16 reloc.  */
370 
371 static void
m32r_elf_relocate_hi16(bfd * input_bfd,int type,Elf_Internal_Rela * relhi,Elf_Internal_Rela * rello,bfd_byte * contents,bfd_vma addend)372 m32r_elf_relocate_hi16 (bfd *input_bfd,
373 			int type,
374 			Elf_Internal_Rela *relhi,
375 			Elf_Internal_Rela *rello,
376 			bfd_byte *contents,
377 			bfd_vma addend)
378 {
379   unsigned long insn;
380   bfd_vma addlo;
381 
382   insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
383 
384   addlo = bfd_get_32 (input_bfd, contents + rello->r_offset);
385   if (type == R_M32R_HI16_SLO)
386     addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000;
387   else
388     addlo &= 0xffff;
389 
390   addend += ((insn & 0xffff) << 16) + addlo;
391 
392   /* Reaccount for sign extension of low part.  */
393   if (type == R_M32R_HI16_SLO
394       && (addend & 0x8000) != 0)
395     addend += 0x10000;
396 
397   bfd_put_32 (input_bfd,
398 	      (insn & 0xffff0000) | ((addend >> 16) & 0xffff),
399 	      contents + relhi->r_offset);
400 }
401 
402 /* Do an R_M32R_LO16 relocation.  This is a straightforward 16 bit
403    inplace relocation; this function exists in order to do the
404    R_M32R_HI16_[SU]LO relocation described above.  */
405 
406 static bfd_reloc_status_type
m32r_elf_lo16_reloc(bfd * input_bfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)407 m32r_elf_lo16_reloc (bfd *input_bfd,
408 		     arelent *reloc_entry,
409 		     asymbol *symbol,
410 		     void * data,
411 		     asection *input_section,
412 		     bfd *output_bfd,
413 		     char **error_message)
414 {
415   /* This part is from bfd_elf_generic_reloc.
416      If we're relocating, and this an external symbol, we don't want
417      to change anything.  */
418   if (output_bfd != NULL
419       && (symbol->flags & BSF_SECTION_SYM) == 0
420       && reloc_entry->addend == 0)
421     {
422       reloc_entry->address += input_section->output_offset;
423       return bfd_reloc_ok;
424     }
425 
426   if (m32r_hi16_list != NULL)
427     {
428       struct m32r_hi16 *l;
429 
430       l = m32r_hi16_list;
431       while (l != NULL)
432 	{
433 	  unsigned long insn;
434 	  unsigned long val;
435 	  unsigned long vallo;
436 	  struct m32r_hi16 *next;
437 
438 	  /* Do the HI16 relocation.  Note that we actually don't need
439 	     to know anything about the LO16 itself, except where to
440 	     find the low 16 bits of the addend needed by the LO16.  */
441 	  insn = bfd_get_32 (input_bfd, l->addr);
442 	  vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address)
443 		   & 0xffff) ^ 0x8000) - 0x8000;
444 	  val = ((insn & 0xffff) << 16) + vallo;
445 	  val += l->addend;
446 
447 	  /* Reaccount for sign extension of low part.  */
448 	  if ((val & 0x8000) != 0)
449 	    val += 0x10000;
450 
451 	  insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff);
452 	  bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr);
453 
454 	  next = l->next;
455 	  free (l);
456 	  l = next;
457 	}
458 
459       m32r_hi16_list = NULL;
460     }
461 
462   /* Now do the LO16 reloc in the usual way.
463      ??? It would be nice to call bfd_elf_generic_reloc here,
464      but we have partial_inplace set.  bfd_elf_generic_reloc will
465      pass the handling back to bfd_install_relocation which will install
466      a section relative addend which is wrong.  */
467   return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data,
468 				input_section, output_bfd, error_message);
469 }
470 
471 
472 static reloc_howto_type m32r_elf_howto_table[] =
473 {
474   /* This reloc does nothing.  */
475   HOWTO (R_M32R_NONE,		/* type */
476 	 0,			/* rightshift */
477 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
478 	 32,			/* bitsize */
479 	 FALSE,			/* pc_relative */
480 	 0,			/* bitpos */
481 	 complain_overflow_bitfield, /* complain_on_overflow */
482 	 bfd_elf_generic_reloc,	/* special_function */
483 	 "R_M32R_NONE",		/* name */
484 	 FALSE,			/* partial_inplace */
485 	 0,			/* src_mask */
486 	 0,			/* dst_mask */
487 	 FALSE),		/* pcrel_offset */
488 
489   /* A 16 bit absolute relocation.  */
490   HOWTO (R_M32R_16,		/* type */
491 	 0,			/* rightshift */
492 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
493 	 16,			/* bitsize */
494 	 FALSE,			/* pc_relative */
495 	 0,			/* bitpos */
496 	 complain_overflow_bitfield, /* complain_on_overflow */
497 	 m32r_elf_generic_reloc,/* special_function */
498 	 "R_M32R_16",		/* name */
499 	 TRUE,			/* partial_inplace */
500 	 0xffff,		/* src_mask */
501 	 0xffff,		/* dst_mask */
502 	 FALSE),		/* pcrel_offset */
503 
504   /* A 32 bit absolute relocation.  */
505   HOWTO (R_M32R_32,		/* type */
506 	 0,			/* rightshift */
507 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
508 	 32,			/* bitsize */
509 	 FALSE,			/* pc_relative */
510 	 0,			/* bitpos */
511 	 complain_overflow_bitfield, /* complain_on_overflow */
512 	 m32r_elf_generic_reloc,/* special_function */
513 	 "R_M32R_32",		/* name */
514 	 TRUE,			/* partial_inplace */
515 	 0xffffffff,		/* src_mask */
516 	 0xffffffff,		/* dst_mask */
517 	 FALSE),		/* pcrel_offset */
518 
519   /* A 24 bit address.  */
520   HOWTO (R_M32R_24,		/* type */
521 	 0,			/* rightshift */
522 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
523 	 24,			/* bitsize */
524 	 FALSE,			/* pc_relative */
525 	 0,			/* bitpos */
526 	 complain_overflow_unsigned, /* complain_on_overflow */
527 	 m32r_elf_generic_reloc,/* special_function */
528 	 "R_M32R_24",		/* name */
529 	 TRUE,			/* partial_inplace */
530 	 0xffffff,		/* src_mask */
531 	 0xffffff,		/* dst_mask */
532 	 FALSE),		/* pcrel_offset */
533 
534   /* An PC Relative 10-bit relocation, shifted by 2.
535      This reloc is complicated because relocations are relative to pc & -4.
536      i.e. branches in the right insn slot use the address of the left insn
537      slot for pc.  */
538   /* ??? It's not clear whether this should have partial_inplace set or not.
539      Branch relaxing in the assembler can store the addend in the insn,
540      and if bfd_install_relocation gets called the addend may get added
541      again.  */
542   HOWTO (R_M32R_10_PCREL,	/* type */
543 	 2,	                /* rightshift */
544 	 1,	                /* size (0 = byte, 1 = short, 2 = long) */
545 	 10,	                /* bitsize */
546 	 TRUE,	                /* pc_relative */
547 	 0,	                /* bitpos */
548 	 complain_overflow_signed, /* complain_on_overflow */
549 	 m32r_elf_10_pcrel_reloc, /* special_function */
550 	 "R_M32R_10_PCREL",	/* name */
551 	 FALSE,	                /* partial_inplace */
552 	 0xff,		        /* src_mask */
553 	 0xff,   		/* dst_mask */
554 	 TRUE),			/* pcrel_offset */
555 
556   /* A relative 18 bit relocation, right shifted by 2.  */
557   HOWTO (R_M32R_18_PCREL,	/* type */
558 	 2,			/* rightshift */
559 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
560 	 16,			/* bitsize */
561 	 TRUE,			/* pc_relative */
562 	 0,			/* bitpos */
563 	 complain_overflow_signed, /* complain_on_overflow */
564 	 bfd_elf_generic_reloc,	/* special_function */
565 	 "R_M32R_18_PCREL",	/* name */
566 	 FALSE,			/* partial_inplace */
567 	 0xffff,		/* src_mask */
568 	 0xffff,		/* dst_mask */
569 	 TRUE),			/* pcrel_offset */
570 
571   /* A relative 26 bit relocation, right shifted by 2.  */
572   /* ??? It's not clear whether this should have partial_inplace set or not.
573      Branch relaxing in the assembler can store the addend in the insn,
574      and if bfd_install_relocation gets called the addend may get added
575      again.  */
576   HOWTO (R_M32R_26_PCREL,	/* type */
577 	 2,			/* rightshift */
578 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
579 	 26,			/* bitsize */
580 	 TRUE,			/* pc_relative */
581 	 0,			/* bitpos */
582 	 complain_overflow_signed, /* complain_on_overflow */
583 	 bfd_elf_generic_reloc,	/* special_function */
584 	 "R_M32R_26_PCREL",	/* name */
585 	 FALSE,			/* partial_inplace */
586 	 0xffffff,		/* src_mask */
587 	 0xffffff,		/* dst_mask */
588 	 TRUE),			/* pcrel_offset */
589 
590   /* High 16 bits of address when lower 16 is or'd in.  */
591   HOWTO (R_M32R_HI16_ULO,	/* type */
592 	 16,			/* rightshift */
593 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
594 	 16,			/* bitsize */
595 	 FALSE,			/* pc_relative */
596 	 0,			/* bitpos */
597 	 complain_overflow_dont, /* complain_on_overflow */
598 	 m32r_elf_hi16_reloc,	/* special_function */
599 	 "R_M32R_HI16_ULO",	/* name */
600 	 TRUE,			/* partial_inplace */
601 	 0x0000ffff,		/* src_mask */
602 	 0x0000ffff,		/* dst_mask */
603 	 FALSE),		/* pcrel_offset */
604 
605   /* High 16 bits of address when lower 16 is added in.  */
606   HOWTO (R_M32R_HI16_SLO,	/* type */
607 	 16,			/* rightshift */
608 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
609 	 16,			/* bitsize */
610 	 FALSE,			/* pc_relative */
611 	 0,			/* bitpos */
612 	 complain_overflow_dont, /* complain_on_overflow */
613 	 m32r_elf_hi16_reloc,	/* special_function */
614 	 "R_M32R_HI16_SLO",	/* name */
615 	 TRUE,			/* partial_inplace */
616 	 0x0000ffff,		/* src_mask */
617 	 0x0000ffff,		/* dst_mask */
618 	 FALSE),		/* pcrel_offset */
619 
620   /* Lower 16 bits of address.  */
621   HOWTO (R_M32R_LO16,		/* type */
622 	 0,			/* rightshift */
623 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
624 	 16,			/* bitsize */
625 	 FALSE,			/* pc_relative */
626 	 0,			/* bitpos */
627 	 complain_overflow_dont, /* complain_on_overflow */
628 	 m32r_elf_lo16_reloc,	/* special_function */
629 	 "R_M32R_LO16",		/* name */
630 	 TRUE,			/* partial_inplace */
631 	 0x0000ffff,		/* src_mask */
632 	 0x0000ffff,		/* dst_mask */
633 	 FALSE),		/* pcrel_offset */
634 
635   /* Small data area 16 bits offset.  */
636   HOWTO (R_M32R_SDA16,		/* type */
637 	 0,			/* rightshift */
638 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
639 	 16,			/* bitsize */
640 	 FALSE,			/* pc_relative */
641 	 0,			/* bitpos */
642 	 complain_overflow_signed, /* complain_on_overflow */
643 	 m32r_elf_sda16_reloc,	/* special_function */
644 	 "R_M32R_SDA16",	/* name */
645 	 TRUE,			/* partial_inplace */  /* FIXME: correct? */
646 	 0x0000ffff,		/* src_mask */
647 	 0x0000ffff,		/* dst_mask */
648 	 FALSE),		/* pcrel_offset */
649 
650   /* GNU extension to record C++ vtable hierarchy.  */
651   HOWTO (R_M32R_GNU_VTINHERIT, /* type */
652          0,                     /* rightshift */
653          2,                     /* size (0 = byte, 1 = short, 2 = long) */
654          0,                     /* bitsize */
655          FALSE,                 /* pc_relative */
656          0,                     /* bitpos */
657          complain_overflow_dont, /* complain_on_overflow */
658          NULL,                  /* special_function */
659          "R_M32R_GNU_VTINHERIT", /* name */
660          FALSE,                 /* partial_inplace */
661          0,                     /* src_mask */
662          0,                     /* dst_mask */
663          FALSE),                /* pcrel_offset */
664 
665   /* GNU extension to record C++ vtable member usage.  */
666   HOWTO (R_M32R_GNU_VTENTRY,     /* type */
667          0,                     /* rightshift */
668          2,                     /* size (0 = byte, 1 = short, 2 = long) */
669          0,                     /* bitsize */
670          FALSE,                 /* pc_relative */
671          0,                     /* bitpos */
672          complain_overflow_dont, /* complain_on_overflow */
673          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
674          "R_M32R_GNU_VTENTRY",   /* name */
675          FALSE,                 /* partial_inplace */
676          0,                     /* src_mask */
677          0,                     /* dst_mask */
678          FALSE),                /* pcrel_offset */
679 
680   EMPTY_HOWTO (13),
681   EMPTY_HOWTO (14),
682   EMPTY_HOWTO (15),
683   EMPTY_HOWTO (16),
684   EMPTY_HOWTO (17),
685   EMPTY_HOWTO (18),
686   EMPTY_HOWTO (19),
687   EMPTY_HOWTO (20),
688   EMPTY_HOWTO (21),
689   EMPTY_HOWTO (22),
690   EMPTY_HOWTO (23),
691   EMPTY_HOWTO (24),
692   EMPTY_HOWTO (25),
693   EMPTY_HOWTO (26),
694   EMPTY_HOWTO (27),
695   EMPTY_HOWTO (28),
696   EMPTY_HOWTO (29),
697   EMPTY_HOWTO (30),
698   EMPTY_HOWTO (31),
699   EMPTY_HOWTO (32),
700 
701   /* A 16 bit absolute relocation.  */
702   HOWTO (R_M32R_16_RELA,	/* type */
703 	 0,			/* rightshift */
704 	 1,			/* size (0 = byte, 1 = short, 2 = long) */
705 	 16,			/* bitsize */
706 	 FALSE,			/* pc_relative */
707 	 0,			/* bitpos */
708 	 complain_overflow_bitfield, /* complain_on_overflow */
709 	 bfd_elf_generic_reloc,	/* special_function */
710 	 "R_M32R_16_RELA",	/* name */
711 	 FALSE,			/* partial_inplace */
712 	 0xffff,		/* src_mask */
713 	 0xffff,		/* dst_mask */
714 	 FALSE),		/* pcrel_offset */
715 
716   /* A 32 bit absolute relocation.  */
717   HOWTO (R_M32R_32_RELA,	/* type */
718 	 0,			/* rightshift */
719 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
720 	 32,			/* bitsize */
721 	 FALSE,			/* pc_relative */
722 	 0,			/* bitpos */
723 	 complain_overflow_bitfield, /* complain_on_overflow */
724 	 bfd_elf_generic_reloc,/* special_function */
725 	 "R_M32R_32_RELA",		/* name */
726 	 FALSE,			/* partial_inplace */
727 	 0xffffffff,		/* src_mask */
728 	 0xffffffff,		/* dst_mask */
729 	 FALSE),		/* pcrel_offset */
730 
731   /* A 24 bit address.  */
732   HOWTO (R_M32R_24_RELA,	/* type */
733 	 0,			/* rightshift */
734 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
735 	 24,			/* bitsize */
736 	 FALSE,			/* pc_relative */
737 	 0,			/* bitpos */
738 	 complain_overflow_unsigned, /* complain_on_overflow */
739 	 bfd_elf_generic_reloc,/* special_function */
740 	 "R_M32R_24_RELA",	/* name */
741 	 FALSE,			/* partial_inplace */
742 	 0xffffff,		/* src_mask */
743 	 0xffffff,		/* dst_mask */
744 	 FALSE),		/* pcrel_offset */
745 
746   HOWTO (R_M32R_10_PCREL_RELA,	/* type */
747 	 2,	                /* rightshift */
748 	 1,	                /* size (0 = byte, 1 = short, 2 = long) */
749 	 10,	                /* bitsize */
750 	 TRUE,	                /* pc_relative */
751 	 0,	                /* bitpos */
752 	 complain_overflow_signed, /* complain_on_overflow */
753 	 m32r_elf_10_pcrel_reloc, /* special_function */
754 	 "R_M32R_10_PCREL_RELA",/* name */
755 	 FALSE,	                /* partial_inplace */
756 	 0xff,		        /* src_mask */
757 	 0xff,   		/* dst_mask */
758 	 TRUE),			/* pcrel_offset */
759 
760   /* A relative 18 bit relocation, right shifted by 2.  */
761   HOWTO (R_M32R_18_PCREL_RELA,	/* type */
762 	 2,			/* rightshift */
763 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
764 	 16,			/* bitsize */
765 	 TRUE,			/* pc_relative */
766 	 0,			/* bitpos */
767 	 complain_overflow_signed, /* complain_on_overflow */
768 	 bfd_elf_generic_reloc,	/* special_function */
769 	 "R_M32R_18_PCREL_RELA",/* name */
770 	 FALSE,			/* partial_inplace */
771 	 0xffff,		/* src_mask */
772 	 0xffff,		/* dst_mask */
773 	 TRUE),			/* pcrel_offset */
774 
775   /* A relative 26 bit relocation, right shifted by 2.  */
776   HOWTO (R_M32R_26_PCREL_RELA,	/* type */
777 	 2,			/* rightshift */
778 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
779 	 26,			/* bitsize */
780 	 TRUE,			/* pc_relative */
781 	 0,			/* bitpos */
782 	 complain_overflow_signed, /* complain_on_overflow */
783 	 bfd_elf_generic_reloc,	/* special_function */
784 	 "R_M32R_26_PCREL_RELA",/* name */
785 	 FALSE,			/* partial_inplace */
786 	 0xffffff,		/* src_mask */
787 	 0xffffff,		/* dst_mask */
788 	 TRUE),			/* pcrel_offset */
789 
790   /* High 16 bits of address when lower 16 is or'd in.  */
791   HOWTO (R_M32R_HI16_ULO_RELA,	/* type */
792 	 16,			/* rightshift */
793 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
794 	 16,			/* bitsize */
795 	 FALSE,			/* pc_relative */
796 	 0,			/* bitpos */
797 	 complain_overflow_dont, /* complain_on_overflow */
798 	 bfd_elf_generic_reloc,	/* special_function */
799 	 "R_M32R_HI16_ULO_RELA",/* name */
800 	 FALSE,			/* partial_inplace */
801 	 0x0000ffff,		/* src_mask */
802 	 0x0000ffff,		/* dst_mask */
803 	 FALSE),		/* pcrel_offset */
804 
805   /* High 16 bits of address when lower 16 is added in.  */
806   HOWTO (R_M32R_HI16_SLO_RELA,	/* type */
807 	 16,			/* rightshift */
808 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
809 	 16,			/* bitsize */
810 	 FALSE,			/* pc_relative */
811 	 0,			/* bitpos */
812 	 complain_overflow_dont, /* complain_on_overflow */
813 	 bfd_elf_generic_reloc,	/* special_function */
814 	 "R_M32R_HI16_SLO_RELA",/* name */
815 	 FALSE,			/* partial_inplace */
816 	 0x0000ffff,		/* src_mask */
817 	 0x0000ffff,		/* dst_mask */
818 	 FALSE),		/* pcrel_offset */
819 
820   /* Lower 16 bits of address.  */
821   HOWTO (R_M32R_LO16_RELA,	/* type */
822 	 0,			/* rightshift */
823 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
824 	 16,			/* bitsize */
825 	 FALSE,			/* pc_relative */
826 	 0,			/* bitpos */
827 	 complain_overflow_dont, /* complain_on_overflow */
828 	 bfd_elf_generic_reloc,	/* special_function */
829 	 "R_M32R_LO16_RELA",	/* name */
830 	 FALSE,			/* partial_inplace */
831 	 0x0000ffff,		/* src_mask */
832 	 0x0000ffff,		/* dst_mask */
833 	 FALSE),		/* pcrel_offset */
834 
835   /* Small data area 16 bits offset.  */
836   HOWTO (R_M32R_SDA16_RELA,	/* type */
837 	 0,			/* rightshift */
838 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
839 	 16,			/* bitsize */
840 	 FALSE,			/* pc_relative */
841 	 0,			/* bitpos */
842 	 complain_overflow_signed, /* complain_on_overflow */
843 	 bfd_elf_generic_reloc,	/* special_function */
844 	 "R_M32R_SDA16_RELA",	/* name */
845 	 TRUE,			/* partial_inplace */  /* FIXME: correct? */
846 	 0x0000ffff,		/* src_mask */
847 	 0x0000ffff,		/* dst_mask */
848 	 FALSE),		/* pcrel_offset */
849 
850   /* GNU extension to record C++ vtable hierarchy.  */
851   HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */
852          0,                     /* rightshift */
853          2,                     /* size (0 = byte, 1 = short, 2 = long) */
854          0,                     /* bitsize */
855          FALSE,                 /* pc_relative */
856          0,                     /* bitpos */
857          complain_overflow_dont, /* complain_on_overflow */
858          NULL,                  /* special_function */
859          "R_M32R_RELA_GNU_VTINHERIT", /* name */
860          FALSE,                 /* partial_inplace */
861          0,                     /* src_mask */
862          0,                     /* dst_mask */
863          FALSE),                /* pcrel_offset */
864 
865   /* GNU extension to record C++ vtable member usage.  */
866   HOWTO (R_M32R_RELA_GNU_VTENTRY,     /* type */
867          0,                     /* rightshift */
868          2,                     /* size (0 = byte, 1 = short, 2 = long) */
869          0,                     /* bitsize */
870          FALSE,                 /* pc_relative */
871          0,                     /* bitpos */
872          complain_overflow_dont, /* complain_on_overflow */
873          _bfd_elf_rel_vtable_reloc_fn,  /* special_function */
874          "R_M32R_RELA_GNU_VTENTRY",   /* name */
875          FALSE,                 /* partial_inplace */
876          0,                     /* src_mask */
877          0,                     /* dst_mask */
878          FALSE),                /* pcrel_offset */
879 
880   /* A 32 bit PC relative relocation.  */
881   HOWTO (R_M32R_REL32,		/* type */
882 	 0,			/* rightshift */
883 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
884 	 32,			/* bitsize */
885 	 TRUE,			/* pc_relative */
886 	 0,			/* bitpos */
887 	 complain_overflow_bitfield, /* complain_on_overflow */
888 	 bfd_elf_generic_reloc,/* special_function */
889 	 "R_M32R_REL32",		/* name */
890 	 FALSE,			/* partial_inplace */
891 	 0xffffffff,		/* src_mask */
892 	 0xffffffff,		/* dst_mask */
893 	 TRUE),			/* pcrel_offset */
894 
895   EMPTY_HOWTO (46),
896   EMPTY_HOWTO (47),
897 
898   /* Like R_M32R_24, but referring to the GOT table entry for
899      the symbol.  */
900   HOWTO (R_M32R_GOT24,		/* type */
901 	 0,			/* rightshift */
902 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
903 	 24,			/* bitsize */
904 	 FALSE,			/* pc_relative */
905 	 0,			/* bitpos */
906 	 complain_overflow_unsigned, /* complain_on_overflow */
907 	 bfd_elf_generic_reloc, /* special_function */
908 	 "R_M32R_GOT24",	/* name */
909 	 FALSE,			/* partial_inplace */
910 	 0xffffff,		/* src_mask */
911 	 0xffffff,		/* dst_mask */
912 	 FALSE),		/* pcrel_offset */
913 
914   /* Like R_M32R_PCREL, but referring to the procedure linkage table
915      entry for the symbol.  */
916   HOWTO (R_M32R_26_PLTREL,	/* type */
917 	 2,			/* rightshift */
918 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
919 	 24,			/* bitsize */
920 	 TRUE,			/* pc_relative */
921 	 0,			/* bitpos */
922 	 complain_overflow_signed, /* complain_on_overflow */
923 	 bfd_elf_generic_reloc,	/* special_function */
924 	 "R_M32R_26_PLTREL",	/* name */
925 	 FALSE,			/* partial_inplace */
926 	 0xffffff,		/* src_mask */
927 	 0xffffff,		/* dst_mask */
928 	 TRUE),			/* pcrel_offset */
929 
930   /* This is used only by the dynamic linker.  The symbol should exist
931      both in the object being run and in some shared library.  The
932      dynamic linker copies the data addressed by the symbol from the
933      shared library into the object, because the object being
934      run has to have the data at some particular address.  */
935   HOWTO (R_M32R_COPY,		/* type */
936 	 0,			/* rightshift */
937 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
938 	 32,			/* bitsize */
939 	 FALSE,			/* pc_relative */
940 	 0,			/* bitpos */
941 	 complain_overflow_bitfield, /* complain_on_overflow */
942 	 bfd_elf_generic_reloc, /* special_function */
943 	 "R_M32R_COPY",		/* name */
944 	 FALSE,			/* partial_inplace */
945 	 0xffffffff,		/* src_mask */
946 	 0xffffffff,		/* dst_mask */
947 	 FALSE),		/* pcrel_offset */
948 
949   /* Like R_M32R_24, but used when setting global offset table
950      entries.  */
951   HOWTO (R_M32R_GLOB_DAT,	/* type */
952 	 0,			/* rightshift */
953 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
954 	 32,			/* bitsize */
955 	 FALSE,			/* pc_relative */
956 	 0,			/* bitpos */
957 	 complain_overflow_bitfield, /* complain_on_overflow */
958 	 bfd_elf_generic_reloc, /* special_function */
959 	 "R_M32R_GLOB_DAT",	/* name */
960 	 FALSE,			/* partial_inplace */
961 	 0xffffffff,		/* src_mask */
962 	 0xffffffff,		/* dst_mask */
963 	 FALSE),		/* pcrel_offset */
964 
965   /* Marks a procedure linkage table entry for a symbol.  */
966   HOWTO (R_M32R_JMP_SLOT,	/* type */
967 	 0,			/* rightshift */
968 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
969 	 32,			/* bitsize */
970 	 FALSE,			/* pc_relative */
971 	 0,			/* bitpos */
972 	 complain_overflow_bitfield, /* complain_on_overflow */
973 	 bfd_elf_generic_reloc, /* special_function */
974 	 "R_M32R_JMP_SLOT",	/* name */
975 	 FALSE,			/* partial_inplace */
976 	 0xffffffff,		/* src_mask */
977 	 0xffffffff,		/* dst_mask */
978 	 FALSE),		/* pcrel_offset */
979 
980   /* Used only by the dynamic linker.  When the object is run, this
981      longword is set to the load address of the object, plus the
982      addend.  */
983   HOWTO (R_M32R_RELATIVE,	/* type */
984 	 0,			/* rightshift */
985 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
986 	 32,			/* bitsize */
987 	 FALSE,			/* pc_relative */
988 	 0,			/* bitpos */
989 	 complain_overflow_bitfield, /* complain_on_overflow */
990 	 bfd_elf_generic_reloc, /* special_function */
991 	 "R_M32R_RELATIVE",	/* name */
992 	 FALSE,			/* partial_inplace */
993 	 0xffffffff,		/* src_mask */
994 	 0xffffffff,		/* dst_mask */
995 	 FALSE),		/* pcrel_offset */
996 
997   HOWTO (R_M32R_GOTOFF,		/* type */
998 	 0,			/* rightshift */
999 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1000 	 24,			/* bitsize */
1001 	 FALSE,			/* pc_relative */
1002 	 0,			/* bitpos */
1003 	 complain_overflow_bitfield, /* complain_on_overflow */
1004 	 bfd_elf_generic_reloc, /* special_function */
1005 	 "R_M32R_GOTOFF",	/* name */
1006 	 FALSE,			/* partial_inplace */
1007 	 0xffffff,		/* src_mask */
1008 	 0xffffff,		/* dst_mask */
1009 	 FALSE),		/* pcrel_offset */
1010 
1011   /* An PC Relative 24-bit relocation used when setting PIC offset
1012      table register. */
1013   HOWTO (R_M32R_GOTPC24,	/* type */
1014 	 0,			/* rightshift */
1015 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1016 	 24,			/* bitsize */
1017 	 TRUE,			/* pc_relative */
1018 	 0,			/* bitpos */
1019 	 complain_overflow_unsigned, /* complain_on_overflow */
1020 	 bfd_elf_generic_reloc, /* special_function */
1021 	 "R_M32R_GOTPC24",	/* name */
1022 	 FALSE,			/* partial_inplace */
1023 	 0xffffff,		/* src_mask */
1024 	 0xffffff,		/* dst_mask */
1025 	 TRUE),			/* pcrel_offset */
1026 
1027   /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1028      the symbol.  */
1029   HOWTO (R_M32R_GOT16_HI_ULO,	/* type */
1030 	 16,			/* rightshift */
1031 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1032 	 16,			/* bitsize */
1033 	 FALSE,			/* pc_relative */
1034 	 0,			/* bitpos */
1035 	 complain_overflow_dont, /* complain_on_overflow */
1036 	 bfd_elf_generic_reloc,	/* special_function */
1037 	 "R_M32R_GOT16_HI_ULO",	/* name */
1038 	 FALSE,			/* partial_inplace */
1039 	 0x0000ffff,		/* src_mask */
1040 	 0x0000ffff,		/* dst_mask */
1041 	 FALSE),		/* pcrel_offset */
1042 
1043   /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1044      the symbol.  */
1045   HOWTO (R_M32R_GOT16_HI_SLO,	/* type */
1046 	 16,			/* rightshift */
1047 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1048 	 16,			/* bitsize */
1049 	 FALSE,			/* pc_relative */
1050 	 0,			/* bitpos */
1051 	 complain_overflow_dont, /* complain_on_overflow */
1052 	 bfd_elf_generic_reloc,	/* special_function */
1053 	 "R_M32R_GOT16_HI_SLO",	/* name */
1054 	 FALSE,			/* partial_inplace */
1055 	 0x0000ffff,		/* src_mask */
1056 	 0x0000ffff,		/* dst_mask */
1057 	 FALSE),		/* pcrel_offset */
1058 
1059   /* Like R_M32R_LO16, but referring to the GOT table entry for
1060      the symbol.  */
1061   HOWTO (R_M32R_GOT16_LO,	/* type */
1062 	 0,			/* rightshift */
1063 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1064 	 16,			/* bitsize */
1065 	 FALSE,			/* pc_relative */
1066 	 0,			/* bitpos */
1067 	 complain_overflow_dont, /* complain_on_overflow */
1068 	 bfd_elf_generic_reloc,	/* special_function */
1069 	 "R_M32R_GOT16_LO",	/* name */
1070 	 FALSE,			/* partial_inplace */
1071 	 0x0000ffff,		/* src_mask */
1072 	 0x0000ffff,		/* dst_mask */
1073 	 FALSE),		/* pcrel_offset */
1074 
1075   /* An PC Relative relocation used when setting PIC offset table register.
1076      Like R_M32R_HI16_ULO, but referring to the GOT table entry for
1077      the symbol.  */
1078   HOWTO (R_M32R_GOTPC_HI_ULO,	/* type */
1079 	 16,			/* rightshift */
1080 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1081 	 16,			/* bitsize */
1082 	 FALSE,			/* pc_relative */
1083 	 0,			/* bitpos */
1084 	 complain_overflow_dont, /* complain_on_overflow */
1085 	 bfd_elf_generic_reloc,	/* special_function */
1086 	 "R_M32R_GOTPC_HI_ULO",	/* name */
1087 	 FALSE,			/* partial_inplace */
1088 	 0x0000ffff,		/* src_mask */
1089 	 0x0000ffff,		/* dst_mask */
1090 	 TRUE),			/* pcrel_offset */
1091 
1092   /* An PC Relative relocation used when setting PIC offset table register.
1093      Like R_M32R_HI16_SLO, but referring to the GOT table entry for
1094      the symbol.  */
1095   HOWTO (R_M32R_GOTPC_HI_SLO,	/* type */
1096 	 16,			/* rightshift */
1097 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1098 	 16,			/* bitsize */
1099 	 FALSE,			/* pc_relative */
1100 	 0,			/* bitpos */
1101 	 complain_overflow_dont, /* complain_on_overflow */
1102 	 bfd_elf_generic_reloc,	/* special_function */
1103 	 "R_M32R_GOTPC_HI_SLO",	/* name */
1104 	 FALSE,			/* partial_inplace */
1105 	 0x0000ffff,		/* src_mask */
1106 	 0x0000ffff,		/* dst_mask */
1107 	 TRUE),			/* pcrel_offset */
1108 
1109   /* An PC Relative relocation used when setting PIC offset table register.
1110      Like R_M32R_LO16, but referring to the GOT table entry for
1111      the symbol.  */
1112   HOWTO (R_M32R_GOTPC_LO,	/* type */
1113 	 0,			/* rightshift */
1114 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1115 	 16,			/* bitsize */
1116 	 FALSE,			/* pc_relative */
1117 	 0,			/* bitpos */
1118 	 complain_overflow_dont, /* complain_on_overflow */
1119 	 bfd_elf_generic_reloc,	/* special_function */
1120 	 "R_M32R_GOTPC_LO",	/* name */
1121 	 FALSE,			/* partial_inplace */
1122 	 0x0000ffff,		/* src_mask */
1123 	 0x0000ffff,		/* dst_mask */
1124 	 TRUE),			/* pcrel_offset */
1125 
1126   HOWTO (R_M32R_GOTOFF_HI_ULO,	/* type */
1127 	 16,			/* rightshift */
1128 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1129 	 16,			/* bitsize */
1130 	 FALSE,			/* pc_relative */
1131 	 0,			/* bitpos */
1132 	 complain_overflow_dont, /* complain_on_overflow */
1133 	 bfd_elf_generic_reloc,	/* special_function */
1134 	 "R_M32R_GOTOFF_HI_ULO",/* name */
1135 	 FALSE,			/* partial_inplace */
1136 	 0x0000ffff,		/* src_mask */
1137 	 0x0000ffff,		/* dst_mask */
1138 	 FALSE),		/* pcrel_offset */
1139 
1140   HOWTO (R_M32R_GOTOFF_HI_SLO,	/* type */
1141 	 16,			/* rightshift */
1142 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1143 	 16,			/* bitsize */
1144 	 FALSE,			/* pc_relative */
1145 	 0,			/* bitpos */
1146 	 complain_overflow_dont, /* complain_on_overflow */
1147 	 bfd_elf_generic_reloc,	/* special_function */
1148 	 "R_M32R_GOTOFF_HI_SLO",/* name */
1149 	 FALSE,			/* partial_inplace */
1150 	 0x0000ffff,		/* src_mask */
1151 	 0x0000ffff,		/* dst_mask */
1152 	 FALSE),		/* pcrel_offset */
1153 
1154   HOWTO (R_M32R_GOTOFF_LO,	/* type */
1155 	 0,			/* rightshift */
1156 	 2,			/* size (0 = byte, 1 = short, 2 = long) */
1157 	 16,			/* bitsize */
1158 	 FALSE,			/* pc_relative */
1159 	 0,			/* bitpos */
1160 	 complain_overflow_dont, /* complain_on_overflow */
1161 	 bfd_elf_generic_reloc,	/* special_function */
1162 	 "R_M32R_GOTOFF_LO",	/* name */
1163 	 FALSE,			/* partial_inplace */
1164 	 0x0000ffff,		/* src_mask */
1165 	 0x0000ffff,		/* dst_mask */
1166 	 FALSE),		/* pcrel_offset */
1167 };
1168 
1169 /* Map BFD reloc types to M32R ELF reloc types.  */
1170 
1171 struct m32r_reloc_map
1172 {
1173   bfd_reloc_code_real_type bfd_reloc_val;
1174   unsigned char elf_reloc_val;
1175 };
1176 
1177 #ifdef USE_M32R_OLD_RELOC
1178 static const struct m32r_reloc_map m32r_reloc_map_old[] =
1179 {
1180   { BFD_RELOC_NONE, R_M32R_NONE },
1181   { BFD_RELOC_16, R_M32R_16 },
1182   { BFD_RELOC_32, R_M32R_32 },
1183   { BFD_RELOC_M32R_24, R_M32R_24 },
1184   { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL },
1185   { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL },
1186   { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL },
1187   { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO },
1188   { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO },
1189   { BFD_RELOC_M32R_LO16, R_M32R_LO16 },
1190   { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 },
1191   { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT },
1192   { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY },
1193 };
1194 #else
1195 static const struct m32r_reloc_map m32r_reloc_map[] =
1196 {
1197   { BFD_RELOC_NONE, R_M32R_NONE },
1198   { BFD_RELOC_16, R_M32R_16_RELA },
1199   { BFD_RELOC_32, R_M32R_32_RELA },
1200   { BFD_RELOC_M32R_24, R_M32R_24_RELA },
1201   { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA },
1202   { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA },
1203   { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA },
1204   { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA },
1205   { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA },
1206   { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA },
1207   { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA },
1208   { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT },
1209   { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY },
1210   { BFD_RELOC_32_PCREL, R_M32R_REL32 },
1211 
1212   { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 },
1213   { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL },
1214   { BFD_RELOC_M32R_COPY, R_M32R_COPY },
1215   { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT },
1216   { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT },
1217   { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE },
1218   { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF },
1219   { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 },
1220   { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO },
1221   { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO },
1222   { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO },
1223   { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO },
1224   { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO },
1225   { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO },
1226   { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO },
1227   { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO },
1228   { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO },
1229 };
1230 #endif
1231 
1232 static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)1233 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1234 				 bfd_reloc_code_real_type code)
1235 {
1236   unsigned int i;
1237 
1238 #ifdef USE_M32R_OLD_RELOC
1239   for (i = 0;
1240        i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map);
1241        i++)
1242     if (m32r_reloc_map_old[i].bfd_reloc_val == code)
1243       return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val];
1244 
1245 #else /* ! USE_M32R_OLD_RELOC */
1246 
1247   for (i = 0;
1248        i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map);
1249        i++)
1250     if (m32r_reloc_map[i].bfd_reloc_val == code)
1251       return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val];
1252 #endif
1253 
1254   return NULL;
1255 }
1256 
1257 /* Set the howto pointer for an M32R ELF reloc.  */
1258 
1259 static void
m32r_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)1260 m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
1261 			arelent *cache_ptr,
1262 			Elf_Internal_Rela *dst)
1263 {
1264   unsigned int r_type;
1265 
1266   r_type = ELF32_R_TYPE (dst->r_info);
1267   BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY);
1268   cache_ptr->howto = &m32r_elf_howto_table[r_type];
1269 }
1270 
1271 static void
m32r_info_to_howto(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)1272 m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1273 		    arelent *cache_ptr,
1274 		    Elf_Internal_Rela *dst)
1275 {
1276   BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE)
1277               || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY)
1278                   && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max)));
1279   cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
1280 }
1281 
1282 
1283 /* Given a BFD section, try to locate the corresponding ELF section
1284    index.  */
1285 
1286 static bfd_boolean
_bfd_m32r_elf_section_from_bfd_section(bfd * abfd ATTRIBUTE_UNUSED,asection * sec,int * retval)1287 _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED,
1288 					asection *sec,
1289 					int *retval)
1290 {
1291   if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0)
1292     {
1293       *retval = SHN_M32R_SCOMMON;
1294       return TRUE;
1295     }
1296   return FALSE;
1297 }
1298 
1299 /* M32R ELF uses two common sections.  One is the usual one, and the other
1300    is for small objects.  All the small objects are kept together, and then
1301    referenced via one register, which yields faster assembler code.  It is
1302    up to the compiler to emit an instruction to load the register with
1303    _SDA_BASE.  This is what we use for the small common section.  This
1304    approach is copied from elf32-mips.c.  */
1305 static asection m32r_elf_scom_section;
1306 static asymbol m32r_elf_scom_symbol;
1307 static asymbol *m32r_elf_scom_symbol_ptr;
1308 
1309 /* Handle the special M32R section numbers that a symbol may use.  */
1310 
1311 static void
_bfd_m32r_elf_symbol_processing(bfd * abfd ATTRIBUTE_UNUSED,asymbol * asym)1312 _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym)
1313 {
1314   elf_symbol_type *elfsym = (elf_symbol_type *) asym;
1315 
1316   switch (elfsym->internal_elf_sym.st_shndx)
1317     {
1318     case SHN_M32R_SCOMMON:
1319       if (m32r_elf_scom_section.name == NULL)
1320 	{
1321 	  /* Initialize the small common section.  */
1322 	  m32r_elf_scom_section.name = ".scommon";
1323 	  m32r_elf_scom_section.flags = SEC_IS_COMMON;
1324 	  m32r_elf_scom_section.output_section = &m32r_elf_scom_section;
1325 	  m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol;
1326 	  m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr;
1327 	  m32r_elf_scom_symbol.name = ".scommon";
1328 	  m32r_elf_scom_symbol.flags = BSF_SECTION_SYM;
1329 	  m32r_elf_scom_symbol.section = &m32r_elf_scom_section;
1330 	  m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol;
1331 	}
1332       asym->section = &m32r_elf_scom_section;
1333       asym->value = elfsym->internal_elf_sym.st_size;
1334       break;
1335     }
1336 }
1337 
1338 /* Hook called by the linker routine which adds symbols from an object
1339    file.  We must handle the special M32R section numbers here.
1340    We also keep watching for whether we need to create the sdata special
1341    linker sections.  */
1342 
1343 static bfd_boolean
m32r_elf_add_symbol_hook(bfd * abfd,struct bfd_link_info * info,Elf_Internal_Sym * sym,const char ** namep,flagword * flagsp ATTRIBUTE_UNUSED,asection ** secp,bfd_vma * valp)1344 m32r_elf_add_symbol_hook (bfd *abfd,
1345 			  struct bfd_link_info *info,
1346 			  Elf_Internal_Sym *sym,
1347 			  const char **namep,
1348 			  flagword *flagsp ATTRIBUTE_UNUSED,
1349 			  asection **secp,
1350 			  bfd_vma *valp)
1351 {
1352   if (! info->relocatable
1353       && (*namep)[0] == '_' && (*namep)[1] == 'S'
1354       && strcmp (*namep, "_SDA_BASE_") == 0
1355       && is_elf_hash_table (info->hash))
1356     {
1357       /* This is simpler than using _bfd_elf_create_linker_section
1358 	 (our needs are simpler than ppc's needs).  Also
1359 	 _bfd_elf_create_linker_section currently has a bug where if a .sdata
1360 	 section already exists a new one is created that follows it which
1361 	 screws of _SDA_BASE_ address calcs because output_offset != 0.  */
1362       struct elf_link_hash_entry *h;
1363       struct bfd_link_hash_entry *bh;
1364       asection *s = bfd_get_section_by_name (abfd, ".sdata");
1365 
1366       /* The following code was cobbled from elf32-ppc.c and elflink.c.  */
1367       if (s == NULL)
1368 	{
1369 	  flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1370 			    | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1371 
1372 	  s = bfd_make_section_anyway_with_flags (abfd, ".sdata",
1373 						  flags);
1374 	  if (s == NULL)
1375 	    return FALSE;
1376 	  bfd_set_section_alignment (abfd, s, 2);
1377 	}
1378 
1379       bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_",
1380 				 FALSE, FALSE, FALSE);
1381 
1382       if ((bh == NULL || bh->type == bfd_link_hash_undefined)
1383 	  && !(_bfd_generic_link_add_one_symbol (info,
1384 						 abfd,
1385 						 "_SDA_BASE_",
1386 						 BSF_GLOBAL,
1387 						 s,
1388 						 (bfd_vma) 32768,
1389 						 NULL,
1390 						 FALSE,
1391 						 get_elf_backend_data (abfd)->collect,
1392 						 &bh)))
1393 	return FALSE;
1394       h = (struct elf_link_hash_entry *) bh;
1395       h->type = STT_OBJECT;
1396     }
1397 
1398   switch (sym->st_shndx)
1399     {
1400     case SHN_M32R_SCOMMON:
1401       *secp = bfd_make_section_old_way (abfd, ".scommon");
1402       (*secp)->flags |= SEC_IS_COMMON;
1403       *valp = sym->st_size;
1404       break;
1405     }
1406 
1407   return TRUE;
1408 }
1409 
1410 /* We have to figure out the SDA_BASE value, so that we can adjust the
1411    symbol value correctly.  We look up the symbol _SDA_BASE_ in the output
1412    BFD.  If we can't find it, we're stuck.  We cache it in the ELF
1413    target data.  We don't need to adjust the symbol value for an
1414    external symbol if we are producing relocatable output.  */
1415 
1416 static bfd_reloc_status_type
m32r_elf_final_sda_base(bfd * output_bfd,struct bfd_link_info * info,const char ** error_message,bfd_vma * psb)1417 m32r_elf_final_sda_base (bfd *output_bfd,
1418 			 struct bfd_link_info *info,
1419 			 const char **error_message,
1420 			 bfd_vma *psb)
1421 {
1422   if (elf_gp (output_bfd) == 0)
1423     {
1424       struct bfd_link_hash_entry *h;
1425 
1426       h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE);
1427       if (h != NULL && h->type == bfd_link_hash_defined)
1428 	elf_gp (output_bfd) = (h->u.def.value
1429 			       + h->u.def.section->output_section->vma
1430 			       + h->u.def.section->output_offset);
1431       else
1432 	{
1433 	  /* Only get the error once.  */
1434 	  *psb = elf_gp (output_bfd) = 4;
1435 	  *error_message =
1436 	    (const char *) _("SDA relocation when _SDA_BASE_ not defined");
1437 	  return bfd_reloc_dangerous;
1438 	}
1439     }
1440   *psb = elf_gp (output_bfd);
1441   return bfd_reloc_ok;
1442 }
1443 
1444 /* Return size of a PLT entry.  */
1445 #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE
1446 
1447 /* The m32r linker needs to keep track of the number of relocs that it
1448    decides to copy in check_relocs for each symbol.  This is so that
1449    it can discard PC relative relocs if it doesn't need them when
1450    linking with -Bsymbolic.  We store the information in a field
1451    extending the regular ELF linker hash table.  */
1452 
1453 /* This structure keeps track of the number of PC relative relocs we
1454    have copied for a given symbol.  */
1455 
1456 struct elf_m32r_pcrel_relocs_copied
1457 {
1458   /* Next section.  */
1459   struct elf_m32r_pcrel_relocs_copied *next;
1460   /* A section in dynobj.  */
1461   asection *section;
1462   /* Number of relocs copied in this section.  */
1463   bfd_size_type count;
1464 };
1465 
1466 /* The sh linker needs to keep track of the number of relocs that it
1467    decides to copy as dynamic relocs in check_relocs for each symbol.
1468    This is so that it can later discard them if they are found to be
1469    unnecessary.  We store the information in a field extending the
1470    regular ELF linker hash table.  */
1471 
1472 struct elf_m32r_dyn_relocs
1473 {
1474   struct elf_m32r_dyn_relocs *next;
1475 
1476   /* The input section of the reloc.  */
1477   asection *sec;
1478 
1479   /* Total number of relocs copied for the input section.  */
1480   bfd_size_type count;
1481 
1482   /* Number of pc-relative relocs copied for the input section.  */
1483   bfd_size_type pc_count;
1484 };
1485 
1486 
1487 /* m32r ELF linker hash entry.  */
1488 
1489 struct elf_m32r_link_hash_entry
1490 {
1491   struct elf_link_hash_entry root;
1492 
1493   /* Track dynamic relocs copied for this symbol.  */
1494   struct elf_m32r_dyn_relocs *dyn_relocs;
1495 };
1496 
1497 /* m32r ELF linker hash table.  */
1498 
1499 struct elf_m32r_link_hash_table
1500 {
1501   struct elf_link_hash_table root;
1502 
1503   /* Short-cuts to get to dynamic linker sections.  */
1504   asection *sgot;
1505   asection *sgotplt;
1506   asection *srelgot;
1507   asection *splt;
1508   asection *srelplt;
1509   asection *sdynbss;
1510   asection *srelbss;
1511 
1512   /* Small local sym to section mapping cache.  */
1513   struct sym_sec_cache sym_sec;
1514 };
1515 
1516 /* Traverse an m32r ELF linker hash table.  */
1517 
1518 #define m32r_elf_link_hash_traverse(table, func, info)			\
1519   (elf_link_hash_traverse						\
1520    (&(table)->root,							\
1521     (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func),	\
1522     (info)))
1523 
1524 /* Get the m32r ELF linker hash table from a link_info structure.  */
1525 
1526 
1527 #define m32r_elf_hash_table(p) \
1528   ((struct elf_m32r_link_hash_table *) ((p)->hash))
1529 
1530 /* Create an entry in an m32r ELF linker hash table.  */
1531 
1532 static struct bfd_hash_entry *
m32r_elf_link_hash_newfunc(struct bfd_hash_entry * entry,struct bfd_hash_table * table,const char * string)1533 m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1534 			    struct bfd_hash_table *table,
1535 			    const char *string)
1536 {
1537   struct elf_m32r_link_hash_entry *ret =
1538     (struct elf_m32r_link_hash_entry *) entry;
1539 
1540   /* Allocate the structure if it has not already been allocated by a
1541      subclass.  */
1542   if (ret == NULL)
1543     ret = bfd_hash_allocate (table,
1544 			     sizeof (struct elf_m32r_link_hash_entry));
1545   if (ret == NULL)
1546     return NULL;
1547 
1548   /* Call the allocation method of the superclass.  */
1549   ret = ((struct elf_m32r_link_hash_entry *)
1550          _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
1551                                      table, string));
1552   if (ret != NULL)
1553     {
1554       struct elf_m32r_link_hash_entry *eh;
1555 
1556       eh = (struct elf_m32r_link_hash_entry *) ret;
1557       eh->dyn_relocs = NULL;
1558     }
1559 
1560   return (struct bfd_hash_entry *) ret;
1561 }
1562 
1563 /* Create an m32r ELF linker hash table.  */
1564 
1565 static struct bfd_link_hash_table *
m32r_elf_link_hash_table_create(bfd * abfd)1566 m32r_elf_link_hash_table_create (bfd *abfd)
1567 {
1568   struct elf_m32r_link_hash_table *ret;
1569   bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table);
1570 
1571   ret = bfd_malloc (amt);
1572   if (ret == NULL)
1573     return NULL;
1574 
1575   if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
1576 				      m32r_elf_link_hash_newfunc,
1577 				      sizeof (struct elf_m32r_link_hash_entry)))
1578     {
1579       free (ret);
1580       return NULL;
1581     }
1582 
1583   ret->sgot = NULL;
1584   ret->sgotplt = NULL;
1585   ret->srelgot = NULL;
1586   ret->splt = NULL;
1587   ret->srelplt = NULL;
1588   ret->sdynbss = NULL;
1589   ret->srelbss = NULL;
1590   ret->sym_sec.abfd = NULL;
1591 
1592   return &ret->root.root;
1593 }
1594 
1595 /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up
1596    shortcuts to them in our hash table.  */
1597 
1598 static bfd_boolean
create_got_section(bfd * dynobj,struct bfd_link_info * info)1599 create_got_section (bfd *dynobj, struct bfd_link_info *info)
1600 {
1601   struct elf_m32r_link_hash_table *htab;
1602 
1603   if (! _bfd_elf_create_got_section (dynobj, info))
1604     return FALSE;
1605 
1606   htab = m32r_elf_hash_table (info);
1607   htab->sgot = bfd_get_section_by_name (dynobj, ".got");
1608   htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1609   if (! htab->sgot || ! htab->sgotplt)
1610     abort ();
1611 
1612   htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got",
1613 					       (SEC_ALLOC
1614 						| SEC_LOAD
1615 						| SEC_HAS_CONTENTS
1616 						| SEC_IN_MEMORY
1617 						| SEC_LINKER_CREATED
1618 						| SEC_READONLY));
1619   if (htab->srelgot == NULL
1620       || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2))
1621     return FALSE;
1622 
1623   return TRUE;
1624 }
1625 
1626 /* Create dynamic sections when linking against a dynamic object.  */
1627 
1628 static bfd_boolean
m32r_elf_create_dynamic_sections(bfd * abfd,struct bfd_link_info * info)1629 m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
1630 {
1631   struct elf_m32r_link_hash_table *htab;
1632   flagword flags, pltflags;
1633   asection *s;
1634   const struct elf_backend_data *bed = get_elf_backend_data (abfd);
1635   int ptralign = 2; /* 32bit */
1636 
1637   htab = m32r_elf_hash_table (info);
1638 
1639   /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
1640      .rel[a].bss sections.  */
1641   flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1642            | SEC_LINKER_CREATED);
1643 
1644   pltflags = flags;
1645   pltflags |= SEC_CODE;
1646   if (bed->plt_not_loaded)
1647     pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS);
1648   if (bed->plt_readonly)
1649     pltflags |= SEC_READONLY;
1650 
1651   s = bfd_make_section_with_flags (abfd, ".plt", pltflags);
1652   htab->splt = s;
1653   if (s == NULL
1654       || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
1655     return FALSE;
1656 
1657   if (bed->want_plt_sym)
1658     {
1659       /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
1660          .plt section.  */
1661       struct bfd_link_hash_entry *bh = NULL;
1662       struct elf_link_hash_entry *h;
1663 
1664       if (! (_bfd_generic_link_add_one_symbol
1665              (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
1666               (bfd_vma) 0, NULL, FALSE,
1667               get_elf_backend_data (abfd)->collect, &bh)))
1668         return FALSE;
1669       h = (struct elf_link_hash_entry *) bh;
1670       h->def_regular = 1;
1671       h->type = STT_OBJECT;
1672       htab->root.hplt = h;
1673 
1674       if (info->shared
1675           && ! bfd_elf_link_record_dynamic_symbol (info, h))
1676         return FALSE;
1677     }
1678 
1679   s = bfd_make_section_with_flags (abfd,
1680 				   bed->default_use_rela_p ? ".rela.plt" : ".rel.plt",
1681 				   flags | SEC_READONLY);
1682   htab->srelplt = s;
1683   if (s == NULL
1684       || ! bfd_set_section_alignment (abfd, s, ptralign))
1685     return FALSE;
1686 
1687   if (htab->sgot == NULL
1688       && ! create_got_section (abfd, info))
1689     return FALSE;
1690 
1691   {
1692     const char *secname;
1693     char *relname;
1694     flagword secflags;
1695     asection *sec;
1696 
1697     for (sec = abfd->sections; sec; sec = sec->next)
1698       {
1699         secflags = bfd_get_section_flags (abfd, sec);
1700         if ((secflags & (SEC_DATA | SEC_LINKER_CREATED))
1701             || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS))
1702           continue;
1703         secname = bfd_get_section_name (abfd, sec);
1704         relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6);
1705         strcpy (relname, ".rela");
1706         strcat (relname, secname);
1707         if (bfd_get_section_by_name (abfd, secname))
1708           continue;
1709         s = bfd_make_section_with_flags (abfd, relname,
1710 					 flags | SEC_READONLY);
1711         if (s == NULL
1712             || ! bfd_set_section_alignment (abfd, s, ptralign))
1713           return FALSE;
1714       }
1715   }
1716 
1717   if (bed->want_dynbss)
1718     {
1719       /* The .dynbss section is a place to put symbols which are defined
1720          by dynamic objects, are referenced by regular objects, and are
1721          not functions.  We must allocate space for them in the process
1722          image and use a R_*_COPY reloc to tell the dynamic linker to
1723          initialize them at run time.  The linker script puts the .dynbss
1724          section into the .bss section of the final image.  */
1725       s = bfd_make_section_with_flags (abfd, ".dynbss",
1726 				       SEC_ALLOC | SEC_LINKER_CREATED);
1727       htab->sdynbss = s;
1728       if (s == NULL)
1729         return FALSE;
1730       /* The .rel[a].bss section holds copy relocs.  This section is not
1731          normally needed.  We need to create it here, though, so that the
1732          linker will map it to an output section.  We can't just create it
1733          only if we need it, because we will not know whether we need it
1734          until we have seen all the input files, and the first time the
1735          main linker code calls BFD after examining all the input files
1736          (size_dynamic_sections) the input sections have already been
1737          mapped to the output sections.  If the section turns out not to
1738          be needed, we can discard it later.  We will never need this
1739          section when generating a shared object, since they do not use
1740          copy relocs.  */
1741       if (! info->shared)
1742         {
1743           s = bfd_make_section_with_flags (abfd,
1744 					   (bed->default_use_rela_p
1745 					    ? ".rela.bss" : ".rel.bss"),
1746 					   flags | SEC_READONLY);
1747           htab->srelbss = s;
1748           if (s == NULL
1749               || ! bfd_set_section_alignment (abfd, s, ptralign))
1750             return FALSE;
1751         }
1752     }
1753 
1754   return TRUE;
1755 }
1756 
1757 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
1758 
1759 static void
m32r_elf_copy_indirect_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * dir,struct elf_link_hash_entry * ind)1760 m32r_elf_copy_indirect_symbol (struct bfd_link_info *info,
1761                                struct elf_link_hash_entry *dir,
1762                                struct elf_link_hash_entry *ind)
1763 {
1764   struct elf_m32r_link_hash_entry * edir;
1765   struct elf_m32r_link_hash_entry * eind;
1766 
1767   edir = (struct elf_m32r_link_hash_entry *) dir;
1768   eind = (struct elf_m32r_link_hash_entry *) ind;
1769 
1770   if (eind->dyn_relocs != NULL)
1771     {
1772       if (edir->dyn_relocs != NULL)
1773         {
1774           struct elf_m32r_dyn_relocs **pp;
1775           struct elf_m32r_dyn_relocs *p;
1776 
1777           /* Add reloc counts against the indirect sym to the direct sym
1778              list.  Merge any entries against the same section.  */
1779           for (pp = &eind->dyn_relocs; (p = *pp) != NULL;)
1780             {
1781               struct elf_m32r_dyn_relocs *q;
1782 
1783               for (q = edir->dyn_relocs; q != NULL; q = q->next)
1784                 if (q->sec == p->sec)
1785                   {
1786                     q->pc_count += p->pc_count;
1787                     q->count += p->count;
1788                     *pp = p->next;
1789                     break;
1790                   }
1791               if (q == NULL)
1792                 pp = &p->next;
1793             }
1794           *pp = edir->dyn_relocs;
1795         }
1796 
1797       edir->dyn_relocs = eind->dyn_relocs;
1798       eind->dyn_relocs = NULL;
1799     }
1800 
1801   _bfd_elf_link_hash_copy_indirect (info, dir, ind);
1802 }
1803 
1804 
1805 /* Adjust a symbol defined by a dynamic object and referenced by a
1806    regular object.  The current definition is in some section of the
1807    dynamic object, but we're not including those sections.  We have to
1808    change the definition to something the rest of the link can
1809    understand.  */
1810 
1811 static bfd_boolean
m32r_elf_adjust_dynamic_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)1812 m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
1813 				struct elf_link_hash_entry *h)
1814 {
1815   struct elf_m32r_link_hash_table *htab;
1816   struct elf_m32r_link_hash_entry *eh;
1817   struct elf_m32r_dyn_relocs *p;
1818   bfd *dynobj;
1819   asection *s;
1820   unsigned int power_of_two;
1821 
1822 #ifdef DEBUG_PIC
1823   printf ("m32r_elf_adjust_dynamic_symbol()\n");
1824 #endif
1825 
1826   dynobj = elf_hash_table (info)->dynobj;
1827 
1828   /* Make sure we know what is going on here.  */
1829   BFD_ASSERT (dynobj != NULL
1830               && (h->needs_plt
1831                   || h->u.weakdef != NULL
1832                   || (h->def_dynamic
1833                       && h->ref_regular
1834                       && !h->def_regular)));
1835 
1836   /* If this is a function, put it in the procedure linkage table.  We
1837      will fill in the contents of the procedure linkage table later,
1838      when we know the address of the .got section.  */
1839   if (h->type == STT_FUNC
1840       || h->needs_plt)
1841     {
1842       if (! info->shared
1843           && !h->def_dynamic
1844           && !h->ref_dynamic
1845 	  && h->root.type != bfd_link_hash_undefweak
1846 	  && h->root.type != bfd_link_hash_undefined)
1847         {
1848           /* This case can occur if we saw a PLT reloc in an input
1849              file, but the symbol was never referred to by a dynamic
1850              object.  In such a case, we don't actually need to build
1851              a procedure linkage table, and we can just do a PCREL
1852              reloc instead.  */
1853           h->plt.offset = (bfd_vma) -1;
1854           h->needs_plt = 0;
1855         }
1856 
1857       return TRUE;
1858     }
1859   else
1860     h->plt.offset = (bfd_vma) -1;
1861 
1862   /* If this is a weak symbol, and there is a real definition, the
1863      processor independent code will have arranged for us to see the
1864      real definition first, and we can just use the same value.  */
1865   if (h->u.weakdef != NULL)
1866     {
1867       BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
1868                   || h->u.weakdef->root.type == bfd_link_hash_defweak);
1869       h->root.u.def.section = h->u.weakdef->root.u.def.section;
1870       h->root.u.def.value = h->u.weakdef->root.u.def.value;
1871       return TRUE;
1872     }
1873 
1874   /* This is a reference to a symbol defined by a dynamic object which
1875      is not a function.  */
1876 
1877   /* If we are creating a shared library, we must presume that the
1878      only references to the symbol are via the global offset table.
1879      For such cases we need not do anything here; the relocations will
1880      be handled correctly by relocate_section.  */
1881   if (info->shared)
1882     return TRUE;
1883 
1884   /* If there are no references to this symbol that do not use the
1885      GOT, we don't need to generate a copy reloc.  */
1886   if (!h->non_got_ref)
1887     return TRUE;
1888 
1889   /* If -z nocopyreloc was given, we won't generate them either.  */
1890   if (info->nocopyreloc)
1891     {
1892       h->non_got_ref = 0;
1893       return TRUE;
1894     }
1895 
1896   eh = (struct elf_m32r_link_hash_entry *) h;
1897   for (p = eh->dyn_relocs; p != NULL; p = p->next)
1898     {
1899       s = p->sec->output_section;
1900       if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0)
1901         break;
1902     }
1903 
1904   /* If we didn't find any dynamic relocs in sections which needs the
1905      copy reloc, then we'll be keeping the dynamic relocs and avoiding
1906      the copy reloc.  */
1907   if (p == NULL)
1908     {
1909       h->non_got_ref = 0;
1910       return TRUE;
1911     }
1912 
1913   if (h->size == 0)
1914     {
1915       (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
1916 			     h->root.root.string);
1917       return TRUE;
1918     }
1919 
1920   /* We must allocate the symbol in our .dynbss section, which will
1921      become part of the .bss section of the executable.  There will be
1922      an entry for this symbol in the .dynsym section.  The dynamic
1923      object will contain position independent code, so all references
1924      from the dynamic object to this symbol will go through the global
1925      offset table.  The dynamic linker will use the .dynsym entry to
1926      determine the address it must put in the global offset table, so
1927      both the dynamic object and the regular object will refer to the
1928      same memory location for the variable.  */
1929 
1930   htab = m32r_elf_hash_table (info);
1931   s = htab->sdynbss;
1932   BFD_ASSERT (s != NULL);
1933 
1934   /* We must generate a R_M32R_COPY reloc to tell the dynamic linker
1935      to copy the initial value out of the dynamic object and into the
1936      runtime process image.  We need to remember the offset into the
1937      .rela.bss section we are going to use.  */
1938   if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1939     {
1940       asection *srel;
1941 
1942       srel = htab->srelbss;
1943       BFD_ASSERT (srel != NULL);
1944       srel->size += sizeof (Elf32_External_Rela);
1945       h->needs_copy = 1;
1946     }
1947 
1948   /* We need to figure out the alignment required for this symbol.  I
1949      have no idea how ELF linkers handle this.  */
1950   power_of_two = bfd_log2 (h->size);
1951   if (power_of_two > 3)
1952     power_of_two = 3;
1953 
1954   /* Apply the required alignment.  */
1955   s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
1956   if (power_of_two > bfd_get_section_alignment (dynobj, s))
1957     {
1958       if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1959         return FALSE;
1960     }
1961 
1962   /* Define the symbol as being at this point in the section.  */
1963   h->root.u.def.section = s;
1964   h->root.u.def.value = s->size;
1965 
1966   /* Increment the section size to make room for the symbol.  */
1967   s->size += h->size;
1968 
1969   return TRUE;
1970 }
1971 
1972 /* Allocate space in .plt, .got and associated reloc sections for
1973    dynamic relocs.  */
1974 
1975 static bfd_boolean
allocate_dynrelocs(struct elf_link_hash_entry * h,void * inf)1976 allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
1977 {
1978   struct bfd_link_info *info;
1979   struct elf_m32r_link_hash_table *htab;
1980   struct elf_m32r_link_hash_entry *eh;
1981   struct elf_m32r_dyn_relocs *p;
1982 
1983   if (h->root.type == bfd_link_hash_indirect)
1984     return TRUE;
1985 
1986   if (h->root.type == bfd_link_hash_warning)
1987     /* When warning symbols are created, they **replace** the "real"
1988        entry in the hash table, thus we never get to see the real
1989        symbol in a hash traversal.  So look at it now.  */
1990     h = (struct elf_link_hash_entry *) h->root.u.i.link;
1991 
1992   info = (struct bfd_link_info *) inf;
1993   htab = m32r_elf_hash_table (info);
1994 
1995   eh = (struct elf_m32r_link_hash_entry *) h;
1996 
1997   if (htab->root.dynamic_sections_created
1998       && h->plt.refcount > 0)
1999     {
2000       /* Make sure this symbol is output as a dynamic symbol.
2001          Undefined weak syms won't yet be marked as dynamic.  */
2002       if (h->dynindx == -1
2003           && !h->forced_local)
2004         {
2005           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2006             return FALSE;
2007         }
2008 
2009       if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h))
2010         {
2011           asection *s = htab->splt;
2012 
2013           /* If this is the first .plt entry, make room for the special
2014              first entry.  */
2015           if (s->size == 0)
2016             s->size += PLT_ENTRY_SIZE;
2017 
2018           h->plt.offset = s->size;
2019 
2020           /* If this symbol is not defined in a regular file, and we are
2021              not generating a shared library, then set the symbol to this
2022              location in the .plt.  This is required to make function
2023              pointers compare as equal between the normal executable and
2024              the shared library.  */
2025           if (! info->shared
2026               && !h->def_regular)
2027             {
2028               h->root.u.def.section = s;
2029               h->root.u.def.value = h->plt.offset;
2030             }
2031 
2032           /* Make room for this entry.  */
2033           s->size += PLT_ENTRY_SIZE;
2034 
2035           /* We also need to make an entry in the .got.plt section, which
2036              will be placed in the .got section by the linker script.  */
2037           htab->sgotplt->size += 4;
2038 
2039           /* We also need to make an entry in the .rel.plt section.  */
2040           htab->srelplt->size += sizeof (Elf32_External_Rela);
2041         }
2042       else
2043         {
2044           h->plt.offset = (bfd_vma) -1;
2045           h->needs_plt = 0;
2046         }
2047     }
2048   else
2049     {
2050       h->plt.offset = (bfd_vma) -1;
2051       h->needs_plt = 0;
2052     }
2053 
2054   if (h->got.refcount > 0)
2055     {
2056       asection *s;
2057       bfd_boolean dyn;
2058 
2059       /* Make sure this symbol is output as a dynamic symbol.
2060          Undefined weak syms won't yet be marked as dynamic.  */
2061       if (h->dynindx == -1
2062           && !h->forced_local)
2063         {
2064           if (! bfd_elf_link_record_dynamic_symbol (info, h))
2065             return FALSE;
2066         }
2067 
2068       s = htab->sgot;
2069 
2070       h->got.offset = s->size;
2071       s->size += 4;
2072       dyn = htab->root.dynamic_sections_created;
2073       if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h))
2074         htab->srelgot->size += sizeof (Elf32_External_Rela);
2075     }
2076   else
2077     h->got.offset = (bfd_vma) -1;
2078 
2079   if (eh->dyn_relocs == NULL)
2080     return TRUE;
2081 
2082   /* In the shared -Bsymbolic case, discard space allocated for
2083      dynamic pc-relative relocs against symbols which turn out to be
2084      defined in regular objects.  For the normal shared case, discard
2085      space for pc-relative relocs that have become local due to symbol
2086      visibility changes.  */
2087 
2088   if (info->shared)
2089     {
2090       if (h->def_regular
2091           && (h->forced_local
2092               || info->symbolic))
2093         {
2094           struct elf_m32r_dyn_relocs **pp;
2095 
2096           for (pp = &eh->dyn_relocs; (p = *pp) != NULL;)
2097             {
2098               p->count -= p->pc_count;
2099               p->pc_count = 0;
2100               if (p->count == 0)
2101                 *pp = p->next;
2102               else
2103                 pp = &p->next;
2104             }
2105         }
2106 
2107       /* Also discard relocs on undefined weak syms with non-default
2108 	 visibility.  */
2109       if (eh->dyn_relocs != NULL
2110 	  && h->root.type == bfd_link_hash_undefweak)
2111 	{
2112 	  if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2113 	    eh->dyn_relocs = NULL;
2114 
2115 	  /* Make sure undefined weak symbols are output as a dynamic
2116 	     symbol in PIEs.  */
2117 	  else if (h->dynindx == -1
2118 		   && !h->forced_local)
2119 	    {
2120 	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
2121 		return FALSE;
2122 	    }
2123 	}
2124     }
2125   else
2126     {
2127       /* For the non-shared case, discard space for relocs against
2128          symbols which turn out to need copy relocs or are not
2129          dynamic.  */
2130 
2131       if (!h->non_got_ref
2132           && ((h->def_dynamic
2133                && !h->def_regular)
2134               || (htab->root.dynamic_sections_created
2135                   && (h->root.type == bfd_link_hash_undefweak
2136                       || h->root.type == bfd_link_hash_undefined))))
2137         {
2138           /* Make sure this symbol is output as a dynamic symbol.
2139              Undefined weak syms won't yet be marked as dynamic.  */
2140           if (h->dynindx == -1
2141               && !h->forced_local)
2142             {
2143               if (! bfd_elf_link_record_dynamic_symbol (info, h))
2144                 return FALSE;
2145             }
2146 
2147           /* If that succeeded, we know we'll be keeping all the
2148              relocs.  */
2149           if (h->dynindx != -1)
2150             goto keep;
2151         }
2152 
2153       eh->dyn_relocs = NULL;
2154 
2155     keep: ;
2156     }
2157 
2158   /* Finally, allocate space.  */
2159   for (p = eh->dyn_relocs; p != NULL; p = p->next)
2160     {
2161       asection *sreloc = elf_section_data (p->sec)->sreloc;
2162       sreloc->size += p->count * sizeof (Elf32_External_Rela);
2163     }
2164 
2165   return TRUE;
2166 }
2167 
2168 /* Find any dynamic relocs that apply to read-only sections.  */
2169 
2170 static bfd_boolean
readonly_dynrelocs(struct elf_link_hash_entry * h,void * inf)2171 readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf)
2172 {
2173   struct elf_m32r_link_hash_entry *eh;
2174   struct elf_m32r_dyn_relocs *p;
2175 
2176   if (h->root.type == bfd_link_hash_warning)
2177     h = (struct elf_link_hash_entry *) h->root.u.i.link;
2178 
2179   eh = (struct elf_m32r_link_hash_entry *) h;
2180   for (p = eh->dyn_relocs; p != NULL; p = p->next)
2181     {
2182       asection *s = p->sec->output_section;
2183 
2184       if (s != NULL && (s->flags & SEC_READONLY) != 0)
2185         {
2186           struct bfd_link_info *info = (struct bfd_link_info *) inf;
2187 
2188           info->flags |= DF_TEXTREL;
2189 
2190           /* Not an error, just cut short the traversal.  */
2191           return FALSE;
2192         }
2193     }
2194   return TRUE;
2195 }
2196 
2197 /* Set the sizes of the dynamic sections.  */
2198 
2199 static bfd_boolean
m32r_elf_size_dynamic_sections(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info)2200 m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
2201 				struct bfd_link_info *info)
2202 {
2203   struct elf_m32r_link_hash_table *htab;
2204   bfd *dynobj;
2205   asection *s;
2206   bfd_boolean relocs;
2207   bfd *ibfd;
2208 
2209 #ifdef DEBUG_PIC
2210   printf ("m32r_elf_size_dynamic_sections()\n");
2211 #endif
2212 
2213   htab = m32r_elf_hash_table (info);
2214   dynobj = htab->root.dynobj;
2215   BFD_ASSERT (dynobj != NULL);
2216 
2217   if (htab->root.dynamic_sections_created)
2218     {
2219       /* Set the contents of the .interp section to the interpreter.  */
2220       if (info->executable)
2221 	{
2222 	  s = bfd_get_section_by_name (dynobj, ".interp");
2223 	  BFD_ASSERT (s != NULL);
2224 	  s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2225 	  s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2226 	}
2227     }
2228 
2229   /* Set up .got offsets for local syms, and space for local dynamic
2230      relocs.  */
2231   for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
2232     {
2233       bfd_signed_vma *local_got;
2234       bfd_signed_vma *end_local_got;
2235       bfd_size_type locsymcount;
2236       Elf_Internal_Shdr *symtab_hdr;
2237       asection *srel;
2238 
2239       if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
2240         continue;
2241 
2242       for (s = ibfd->sections; s != NULL; s = s->next)
2243         {
2244           struct elf_m32r_dyn_relocs *p;
2245 
2246           for (p = ((struct elf_m32r_dyn_relocs *)
2247                     elf_section_data (s)->local_dynrel);
2248                p != NULL;
2249                p = p->next)
2250             {
2251               if (! bfd_is_abs_section (p->sec)
2252                   && bfd_is_abs_section (p->sec->output_section))
2253                 {
2254                   /* Input section has been discarded, either because
2255                      it is a copy of a linkonce section or due to
2256                      linker script /DISCARD/, so we'll be discarding
2257                      the relocs too.  */
2258                 }
2259               else if (p->count != 0)
2260                 {
2261                   srel = elf_section_data (p->sec)->sreloc;
2262                   srel->size += p->count * sizeof (Elf32_External_Rela);
2263                   if ((p->sec->output_section->flags & SEC_READONLY) != 0)
2264                     info->flags |= DF_TEXTREL;
2265                 }
2266             }
2267         }
2268 
2269       local_got = elf_local_got_refcounts (ibfd);
2270       if (!local_got)
2271         continue;
2272 
2273       symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
2274       locsymcount = symtab_hdr->sh_info;
2275       end_local_got = local_got + locsymcount;
2276       s = htab->sgot;
2277       srel = htab->srelgot;
2278       for (; local_got < end_local_got; ++local_got)
2279         {
2280           if (*local_got > 0)
2281             {
2282               *local_got = s->size;
2283               s->size += 4;
2284               if (info->shared)
2285                 srel->size += sizeof (Elf32_External_Rela);
2286             }
2287           else
2288             *local_got = (bfd_vma) -1;
2289         }
2290     }
2291 
2292   /* Allocate global sym .plt and .got entries, and space for global
2293      sym dynamic relocs.  */
2294   elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info);
2295 
2296   /* We now have determined the sizes of the various dynamic sections.
2297      Allocate memory for them.  */
2298   relocs = FALSE;
2299   for (s = dynobj->sections; s != NULL; s = s->next)
2300     {
2301       if ((s->flags & SEC_LINKER_CREATED) == 0)
2302         continue;
2303 
2304       if (s == htab->splt
2305           || s == htab->sgot
2306           || s == htab->sgotplt
2307 	  || s == htab->sdynbss)
2308         {
2309           /* Strip this section if we don't need it; see the
2310              comment below.  */
2311         }
2312       else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
2313         {
2314           if (s->size != 0 && s != htab->srelplt)
2315             relocs = TRUE;
2316 
2317           /* We use the reloc_count field as a counter if we need
2318              to copy relocs into the output file.  */
2319           s->reloc_count = 0;
2320         }
2321       else
2322 	/* It's not one of our sections, so don't allocate space.  */
2323 	continue;
2324 
2325       if (s->size == 0)
2326         {
2327           /* If we don't need this section, strip it from the
2328              output file.  This is mostly to handle .rela.bss and
2329              .rela.plt.  We must create both sections in
2330              create_dynamic_sections, because they must be created
2331              before the linker maps input sections to output
2332              sections.  The linker does that before
2333              adjust_dynamic_symbol is called, and it is that
2334              function which decides whether anything needs to go
2335              into these sections.  */
2336           s->flags |= SEC_EXCLUDE;
2337           continue;
2338         }
2339 
2340       if ((s->flags & SEC_HAS_CONTENTS) == 0)
2341 	continue;
2342 
2343       /* Allocate memory for the section contents.  We use bfd_zalloc
2344          here in case unused entries are not reclaimed before the
2345          section's contents are written out.  This should not happen,
2346          but this way if it does, we get a R_M32R_NONE reloc instead
2347          of garbage.  */
2348       s->contents = bfd_zalloc (dynobj, s->size);
2349       if (s->contents == NULL)
2350         return FALSE;
2351     }
2352 
2353   if (htab->root.dynamic_sections_created)
2354     {
2355       /* Add some entries to the .dynamic section.  We fill in the
2356 	 values later, in m32r_elf_finish_dynamic_sections, but we
2357 	 must add the entries now so that we get the correct size for
2358 	 the .dynamic section.  The DT_DEBUG entry is filled in by the
2359 	 dynamic linker and used by the debugger.  */
2360 #define add_dynamic_entry(TAG, VAL) \
2361   _bfd_elf_add_dynamic_entry (info, TAG, VAL)
2362 
2363      if (info->executable)
2364 	{
2365 	  if (! add_dynamic_entry (DT_DEBUG, 0))
2366 	    return FALSE;
2367 	}
2368 
2369       if (htab->splt->size != 0)
2370         {
2371           if (! add_dynamic_entry (DT_PLTGOT, 0)
2372               || ! add_dynamic_entry (DT_PLTRELSZ, 0)
2373               || ! add_dynamic_entry (DT_PLTREL, DT_RELA)
2374               || ! add_dynamic_entry (DT_JMPREL, 0))
2375             return FALSE;
2376         }
2377 
2378       if (relocs)
2379         {
2380           if (! add_dynamic_entry (DT_RELA, 0)
2381               || ! add_dynamic_entry (DT_RELASZ, 0)
2382               || ! add_dynamic_entry (DT_RELAENT,
2383                                       sizeof (Elf32_External_Rela)))
2384             return FALSE;
2385 
2386           /* If any dynamic relocs apply to a read-only section,
2387              then we need a DT_TEXTREL entry.  */
2388           if ((info->flags & DF_TEXTREL) == 0)
2389             elf_link_hash_traverse (&htab->root, readonly_dynrelocs,
2390                                     info);
2391 
2392           if ((info->flags & DF_TEXTREL) != 0)
2393             {
2394               if (! add_dynamic_entry (DT_TEXTREL, 0))
2395                 return FALSE;
2396             }
2397         }
2398     }
2399 #undef add_dynamic_entry
2400 
2401   return TRUE;
2402 }
2403 
2404 /* Relocate an M32R/D ELF section.
2405    There is some attempt to make this function usable for many architectures,
2406    both for RELA and REL type relocs, if only to serve as a learning tool.
2407 
2408    The RELOCATE_SECTION function is called by the new ELF backend linker
2409    to handle the relocations for a section.
2410 
2411    The relocs are always passed as Rela structures; if the section
2412    actually uses Rel structures, the r_addend field will always be
2413    zero.
2414 
2415    This function is responsible for adjust the section contents as
2416    necessary, and (if using Rela relocs and generating a
2417    relocatable output file) adjusting the reloc addend as
2418    necessary.
2419 
2420    This function does not have to worry about setting the reloc
2421    address or the reloc symbol index.
2422 
2423    LOCAL_SYMS is a pointer to the swapped in local symbols.
2424 
2425    LOCAL_SECTIONS is an array giving the section in the input file
2426    corresponding to the st_shndx field of each local symbol.
2427 
2428    The global hash table entry for the global symbols can be found
2429    via elf_sym_hashes (input_bfd).
2430 
2431    When generating relocatable output, this function must handle
2432    STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
2433    going to be the section symbol corresponding to the output
2434    section, which means that the addend must be adjusted
2435    accordingly.  */
2436 
2437 static bfd_boolean
m32r_elf_relocate_section(bfd * output_bfd ATTRIBUTE_UNUSED,struct bfd_link_info * info,bfd * input_bfd,asection * input_section,bfd_byte * contents,Elf_Internal_Rela * relocs,Elf_Internal_Sym * local_syms,asection ** local_sections)2438 m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
2439 			   struct bfd_link_info *info,
2440 			   bfd *input_bfd,
2441 			   asection *input_section,
2442 			   bfd_byte *contents,
2443 			   Elf_Internal_Rela *relocs,
2444 			   Elf_Internal_Sym *local_syms,
2445 			   asection **local_sections)
2446 {
2447   Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2448   struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2449   Elf_Internal_Rela *rel, *relend;
2450   /* Assume success.  */
2451   bfd_boolean ret = TRUE;
2452 
2453   struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info);
2454   bfd *dynobj;
2455   bfd_vma *local_got_offsets;
2456   asection *sgot, *splt, *sreloc;
2457   bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section);
2458 
2459   dynobj = htab->root.dynobj;
2460   local_got_offsets = elf_local_got_offsets (input_bfd);
2461 
2462   sgot = htab->sgot;
2463   splt = htab->splt;
2464   sreloc = NULL;
2465 
2466   rel = relocs;
2467   relend = relocs + input_section->reloc_count;
2468   for (; rel < relend; rel++)
2469     {
2470       int r_type;
2471       reloc_howto_type *howto;
2472       unsigned long r_symndx;
2473       struct elf_link_hash_entry *h;
2474       /* We can't modify r_addend here as elf_link_input_bfd has an assert to
2475          ensure it's zero (we use REL relocs, not RELA).  Therefore this
2476          should be assigning zero to `addend', but for clarity we use
2477          `r_addend'.  */
2478       bfd_vma addend = rel->r_addend;
2479       bfd_vma offset = rel->r_offset;
2480       Elf_Internal_Sym *sym;
2481       asection *sec;
2482       const char *sym_name;
2483       bfd_reloc_status_type r;
2484       const char *errmsg = NULL;
2485       bfd_boolean use_rel = FALSE;
2486 
2487       h = NULL;
2488       r_type = ELF32_R_TYPE (rel->r_info);
2489       if (r_type < 0 || r_type >= (int) R_M32R_max)
2490 	{
2491 	  (*_bfd_error_handler) (_("%B: unknown relocation type %d"),
2492 				 input_bfd,
2493 				 (int) r_type);
2494 	  bfd_set_error (bfd_error_bad_value);
2495 	  ret = FALSE;
2496 	  continue;
2497 	}
2498 
2499       if (   r_type == R_M32R_GNU_VTENTRY
2500           || r_type == R_M32R_GNU_VTINHERIT
2501           || r_type == R_M32R_NONE
2502           || r_type == R_M32R_RELA_GNU_VTENTRY
2503           || r_type == R_M32R_RELA_GNU_VTINHERIT)
2504         continue;
2505 
2506       if (r_type <= R_M32R_GNU_VTENTRY)
2507         use_rel = TRUE;
2508 
2509       howto = m32r_elf_howto_table + r_type;
2510       r_symndx = ELF32_R_SYM (rel->r_info);
2511 
2512       if (info->relocatable && use_rel)
2513 	{
2514 	  /* This is a relocatable link.  We don't have to change
2515 	     anything, unless the reloc is against a section symbol,
2516 	     in which case we have to adjust according to where the
2517 	     section symbol winds up in the output section.  */
2518 	  sec = NULL;
2519 	  if (r_symndx >= symtab_hdr->sh_info)
2520 	    /* External symbol.  */
2521 	    continue;
2522 
2523 	  /* Local symbol.  */
2524 	  sym = local_syms + r_symndx;
2525 	  sym_name = "<local symbol>";
2526 	  /* STT_SECTION: symbol is associated with a section.  */
2527 	  if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
2528 	    /* Symbol isn't associated with a section.  Nothing to do.  */
2529 	    continue;
2530 
2531 	  sec = local_sections[r_symndx];
2532 	  addend += sec->output_offset + sym->st_value;
2533 
2534 	  /* If partial_inplace, we need to store any additional addend
2535 	     back in the section.  */
2536 	  if (! howto->partial_inplace)
2537 	    continue;
2538 	  /* ??? Here is a nice place to call a special_function
2539 	     like handler.  */
2540 	  if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO)
2541 	    r = _bfd_relocate_contents (howto, input_bfd,
2542 					addend, contents + offset);
2543 	  else
2544 	    {
2545 	      Elf_Internal_Rela *lorel;
2546 
2547 	      /* We allow an arbitrary number of HI16 relocs before the
2548 		 LO16 reloc.  This permits gcc to emit the HI and LO relocs
2549 		 itself.  */
2550 	      for (lorel = rel + 1;
2551 		   (lorel < relend
2552 		    && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
2553 			|| ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
2554 		   lorel++)
2555 		continue;
2556 	      if (lorel < relend
2557 		  && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
2558 		{
2559 		  m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
2560 					  contents, addend);
2561 		  r = bfd_reloc_ok;
2562 		}
2563 	      else
2564 		r = _bfd_relocate_contents (howto, input_bfd,
2565 					    addend, contents + offset);
2566 	    }
2567 	}
2568       else
2569 	{
2570 	  bfd_vma relocation;
2571 
2572 	  /* This is a final link.  */
2573 	  sym = NULL;
2574 	  sec = NULL;
2575           h = NULL;
2576 
2577 	  if (r_symndx < symtab_hdr->sh_info)
2578 	    {
2579 	      /* Local symbol.  */
2580 	      sym = local_syms + r_symndx;
2581 	      sec = local_sections[r_symndx];
2582 	      sym_name = "<local symbol>";
2583 
2584               if (!use_rel)
2585                 {
2586 	          relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
2587 	          addend = rel->r_addend;
2588 
2589                   if (info->relocatable)
2590                     {
2591                       /* This is a relocatable link.  We don't have to change
2592                          anything, unless the reloc is against a section symbol,
2593                          in which case we have to adjust according to where the
2594                          section symbol winds up in the output section.  */
2595                       if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2596                         rel->r_addend += sec->output_offset + sym->st_value;
2597 
2598                       continue;
2599                     }
2600                 }
2601               else
2602                 {
2603 	          relocation = (sec->output_section->vma
2604 			        + sec->output_offset
2605 			        + sym->st_value);
2606                 }
2607 	    }
2608 	  else
2609 	    {
2610 	      /* External symbol.  */
2611               if (info->relocatable && !use_rel)
2612                 continue;
2613 
2614 	      h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2615 	      while (h->root.type == bfd_link_hash_indirect
2616 		     || h->root.type == bfd_link_hash_warning)
2617 		h = (struct elf_link_hash_entry *) h->root.u.i.link;
2618 	      sym_name = h->root.root.string;
2619 
2620 	      if (h->root.type == bfd_link_hash_defined
2621 		  || h->root.type == bfd_link_hash_defweak)
2622 		{
2623 	          bfd_boolean dyn;
2624 		  sec = h->root.u.def.section;
2625 
2626 	          dyn = htab->root.dynamic_sections_created;
2627                   sec = h->root.u.def.section;
2628                   if (r_type == R_M32R_GOTPC24
2629                       || (r_type == R_M32R_GOTPC_HI_ULO
2630                           || r_type == R_M32R_GOTPC_HI_SLO
2631                           || r_type == R_M32R_GOTPC_LO)
2632                       || (r_type == R_M32R_26_PLTREL
2633                           && h->plt.offset != (bfd_vma) -1)
2634                       || ((r_type == R_M32R_GOT24
2635                            || r_type == R_M32R_GOT16_HI_ULO
2636                            || r_type == R_M32R_GOT16_HI_SLO
2637                            || r_type == R_M32R_GOT16_LO)
2638                           && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn,
2639 							      info->shared, h)
2640                           && (! info->shared
2641                               || (! info->symbolic && h->dynindx != -1)
2642                               || !h->def_regular))
2643                       || (info->shared
2644                           && ((! info->symbolic && h->dynindx != -1)
2645                               || !h->def_regular)
2646                           && (((r_type == R_M32R_16_RELA
2647                               || r_type == R_M32R_32_RELA
2648                               || r_type == R_M32R_24_RELA
2649                               || r_type == R_M32R_HI16_ULO_RELA
2650                               || r_type == R_M32R_HI16_SLO_RELA
2651                               || r_type == R_M32R_LO16_RELA)
2652 			          && !h->forced_local)
2653                               || r_type == R_M32R_REL32
2654                               || r_type == R_M32R_10_PCREL_RELA
2655                               || r_type == R_M32R_18_PCREL_RELA
2656                               || r_type == R_M32R_26_PCREL_RELA)
2657                           && ((input_section->flags & SEC_ALLOC) != 0
2658                               /* DWARF will emit R_M32R_16(24,32) relocations
2659                                  in its sections against symbols defined
2660                                  externally in shared libraries.  We can't do
2661                                  anything with them here.  */
2662                               || ((input_section->flags & SEC_DEBUGGING) != 0
2663                                   && h->def_dynamic))))
2664                     {
2665                       /* In these cases, we don't need the relocation
2666                          value.  We check specially because in some
2667                          obscure cases sec->output_section will be NULL.  */
2668                       relocation = 0;
2669                     }
2670 		  else if (sec->output_section == NULL)
2671                     {
2672                       (*_bfd_error_handler)
2673                         (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
2674 			 input_bfd,
2675 			 input_section,
2676 			 (long) rel->r_offset,
2677 			 howto->name,
2678 			 h->root.root.string);
2679 
2680 		       relocation = 0;
2681                     }
2682 		  else
2683 		    relocation = (h->root.u.def.value
2684 				  + sec->output_section->vma
2685 				  + sec->output_offset);
2686 		}
2687 	      else if (h->root.type == bfd_link_hash_undefweak)
2688 		relocation = 0;
2689               else if (info->unresolved_syms_in_objects == RM_IGNORE
2690                        && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2691                 relocation = 0;
2692 	      else
2693 		{
2694 		  if (! ((*info->callbacks->undefined_symbol)
2695 			 (info, h->root.root.string, input_bfd,
2696 			  input_section, offset,
2697                           (info->unresolved_syms_in_objects == RM_GENERATE_ERROR
2698                            || ELF_ST_VISIBILITY (h->other)))))
2699 		    return FALSE;
2700 		  relocation = 0;
2701 		}
2702 	    }
2703 
2704 	  /* Sanity check the address.  */
2705 	  if (offset > high_address)
2706 	    {
2707 	      r = bfd_reloc_outofrange;
2708 	      goto check_reloc;
2709 	    }
2710 
2711 	  switch ((int) r_type)
2712 	    {
2713             case R_M32R_GOTOFF:
2714               /* Relocation is relative to the start of the global offset
2715                  table (for ld24 rx, #uimm24). eg access at label+addend
2716 
2717                  ld24 rx. #label@GOTOFF + addend
2718                  sub  rx, r12.  */
2719 
2720               BFD_ASSERT (sgot != NULL);
2721 
2722               relocation = -(relocation - sgot->output_section->vma);
2723               rel->r_addend = -rel->r_addend;
2724               break;
2725 
2726             case R_M32R_GOTOFF_HI_ULO:
2727             case R_M32R_GOTOFF_HI_SLO:
2728             case R_M32R_GOTOFF_LO:
2729 	      BFD_ASSERT (sgot != NULL);
2730 
2731 	      relocation -= sgot->output_section->vma;
2732 
2733 	      if ((r_type == R_M32R_GOTOFF_HI_SLO)
2734 		  && ((relocation + rel->r_addend) & 0x8000))
2735 		rel->r_addend += 0x10000;
2736 	      break;
2737 
2738             case R_M32R_GOTPC24:
2739               /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2740                  ld24 rx,#_GLOBAL_OFFSET_TABLE_
2741                */
2742              relocation = sgot->output_section->vma;
2743              break;
2744 
2745             case R_M32R_GOTPC_HI_ULO:
2746             case R_M32R_GOTPC_HI_SLO:
2747             case R_M32R_GOTPC_LO:
2748               {
2749                 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
2750                    bl .+4
2751                    seth rx,#high(_GLOBAL_OFFSET_TABLE_)
2752                    or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2753                    or
2754                    bl .+4
2755                    seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
2756                    add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
2757                  */
2758                 relocation = sgot->output_section->vma;
2759                 relocation -= (input_section->output_section->vma
2760                                + input_section->output_offset
2761                                + rel->r_offset);
2762                 if ((r_type == R_M32R_GOTPC_HI_SLO)
2763                      && ((relocation + rel->r_addend) & 0x8000))
2764                   rel->r_addend += 0x10000;
2765 
2766                 break;
2767               }
2768             case R_M32R_GOT16_HI_ULO:
2769             case R_M32R_GOT16_HI_SLO:
2770             case R_M32R_GOT16_LO:
2771               /* Fall through.  */
2772             case R_M32R_GOT24:
2773               /* Relocation is to the entry for this symbol in the global
2774                  offset table.  */
2775               BFD_ASSERT (sgot != NULL);
2776 
2777               if (h != NULL)
2778                 {
2779                   bfd_boolean dyn;
2780                   bfd_vma off;
2781 
2782                   off = h->got.offset;
2783                   BFD_ASSERT (off != (bfd_vma) -1);
2784 
2785                   dyn = htab->root.dynamic_sections_created;
2786                   if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
2787                       || (info->shared
2788                           && (info->symbolic
2789                               || h->dynindx == -1
2790                               || h->forced_local)
2791                           && h->def_regular))
2792                     {
2793                       /* This is actually a static link, or it is a
2794                          -Bsymbolic link and the symbol is defined
2795                          locally, or the symbol was forced to be local
2796                          because of a version file.  We must initialize
2797                          this entry in the global offset table.  Since the
2798                          offset must always be a multiple of 4, we use the
2799                          least significant bit to record whether we have
2800                          initialized it already.
2801 
2802                          When doing a dynamic link, we create a .rela.got
2803                          relocation entry to initialize the value.  This
2804                          is done in the finish_dynamic_symbol routine.  */
2805                       if ((off & 1) != 0)
2806                         off &= ~1;
2807                       else
2808                         {
2809                           bfd_put_32 (output_bfd, relocation,
2810                                       sgot->contents + off);
2811                           h->got.offset |= 1;
2812                         }
2813                     }
2814 
2815                   relocation = sgot->output_offset + off;
2816                 }
2817               else
2818                 {
2819                   bfd_vma off;
2820                   bfd_byte *loc;
2821 
2822                   BFD_ASSERT (local_got_offsets != NULL
2823                               && local_got_offsets[r_symndx] != (bfd_vma) -1);
2824 
2825                   off = local_got_offsets[r_symndx];
2826 
2827                   /* The offset must always be a multiple of 4.  We use
2828                      the least significant bit to record whether we have
2829                      already processed this entry.  */
2830                   if ((off & 1) != 0)
2831                     off &= ~1;
2832                   else
2833                     {
2834                       bfd_put_32 (output_bfd, relocation, sgot->contents + off);
2835 
2836                       if (info->shared)
2837                         {
2838                           asection *srelgot;
2839                           Elf_Internal_Rela outrel;
2840 
2841                           /* We need to generate a R_M32R_RELATIVE reloc
2842                              for the dynamic linker.  */
2843                           srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2844                           BFD_ASSERT (srelgot != NULL);
2845 
2846                           outrel.r_offset = (sgot->output_section->vma
2847                                              + sgot->output_offset
2848                                              + off);
2849                           outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2850                           outrel.r_addend = relocation;
2851                           loc = srelgot->contents;
2852                           loc += srelgot->reloc_count * sizeof (Elf32_External_Rela);
2853                           bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2854                           ++srelgot->reloc_count;
2855                         }
2856 
2857                       local_got_offsets[r_symndx] |= 1;
2858                     }
2859 
2860                   relocation = sgot->output_offset + off;
2861                 }
2862               if ((r_type == R_M32R_GOT16_HI_SLO)
2863                   && ((relocation + rel->r_addend) & 0x8000))
2864                 rel->r_addend += 0x10000;
2865 
2866               break;
2867 
2868             case R_M32R_26_PLTREL:
2869               /* Relocation is to the entry for this symbol in the
2870                  procedure linkage table.  */
2871 
2872               /* The native assembler will generate a 26_PLTREL reloc
2873                  for a local symbol if you assemble a call from one
2874                  section to another when using -K pic. */
2875               if (h == NULL)
2876                 break;
2877 
2878               if (h->forced_local)
2879                 break;
2880 
2881               if (h->plt.offset == (bfd_vma) -1)
2882 		/* We didn't make a PLT entry for this symbol.  This
2883 		   happens when statically linking PIC code, or when
2884 		   using -Bsymbolic.  */
2885 		break;
2886 
2887               relocation = (splt->output_section->vma
2888                             + splt->output_offset
2889                             + h->plt.offset);
2890               break;
2891 
2892             case R_M32R_HI16_SLO_RELA:
2893 	      if ((relocation + rel->r_addend) & 0x8000)
2894 		rel->r_addend += 0x10000;
2895               /* Fall through.  */
2896 
2897             case R_M32R_16_RELA:
2898             case R_M32R_24_RELA:
2899             case R_M32R_32_RELA:
2900             case R_M32R_REL32:
2901 	    case R_M32R_10_PCREL_RELA:
2902             case R_M32R_18_PCREL_RELA:
2903             case R_M32R_26_PCREL_RELA:
2904             case R_M32R_HI16_ULO_RELA:
2905             case R_M32R_LO16_RELA:
2906               if (info->shared
2907                   && r_symndx != 0
2908                   && (input_section->flags & SEC_ALLOC) != 0
2909                   && ((   r_type != R_M32R_10_PCREL_RELA
2910                        && r_type != R_M32R_18_PCREL_RELA
2911                        && r_type != R_M32R_26_PCREL_RELA
2912                        && r_type != R_M32R_REL32)
2913                       || (h != NULL
2914                           && h->dynindx != -1
2915                           && (! info->symbolic
2916                               || !h->def_regular))))
2917                 {
2918                   Elf_Internal_Rela outrel;
2919                   bfd_boolean skip, relocate;
2920                   bfd_byte *loc;
2921 
2922                   /* When generating a shared object, these relocations
2923                      are copied into the output file to be resolved at run
2924                      time.  */
2925                   if (sreloc == NULL)
2926                     {
2927                       const char *name;
2928 
2929                       name = (bfd_elf_string_from_elf_section
2930                               (input_bfd,
2931                                elf_elfheader (input_bfd)->e_shstrndx,
2932                                elf_section_data (input_section)->rel_hdr.sh_name));
2933                       if (name == NULL)
2934                         return FALSE;
2935 
2936                       BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2937                                   && strcmp (bfd_get_section_name (input_bfd,
2938                                                                    input_section),
2939                                              name + 5) == 0);
2940 
2941                       sreloc = bfd_get_section_by_name (dynobj, name);
2942                       BFD_ASSERT (sreloc != NULL);
2943                     }
2944 
2945                   skip = FALSE;
2946                   relocate = FALSE;
2947 
2948                   outrel.r_offset = _bfd_elf_section_offset (output_bfd,
2949                                                              info,
2950                                                              input_section,
2951                                                              rel->r_offset);
2952                   if (outrel.r_offset == (bfd_vma) -1)
2953                     skip = TRUE;
2954                   else if (outrel.r_offset == (bfd_vma) -2)
2955                     skip = relocate = TRUE;
2956                   outrel.r_offset += (input_section->output_section->vma
2957                                       + input_section->output_offset);
2958 
2959                   if (skip)
2960                     memset (&outrel, 0, sizeof outrel);
2961                   else if (   r_type == R_M32R_10_PCREL_RELA
2962                            || r_type == R_M32R_18_PCREL_RELA
2963                            || r_type == R_M32R_26_PCREL_RELA
2964                            || r_type == R_M32R_REL32)
2965                     {
2966                       BFD_ASSERT (h != NULL && h->dynindx != -1);
2967                       outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2968                       outrel.r_addend = rel->r_addend;
2969                     }
2970                   else
2971                     {
2972                     /* h->dynindx may be -1 if this symbol was marked to
2973                        become local.  */
2974                     if (h == NULL
2975                         || ((info->symbolic || h->dynindx == -1)
2976                              && h->def_regular))
2977                       {
2978                         relocate = TRUE;
2979                         outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
2980                         outrel.r_addend = relocation + rel->r_addend;
2981                       }
2982                     else
2983                       {
2984                         BFD_ASSERT (h->dynindx != -1);
2985                         outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2986                         outrel.r_addend = relocation + rel->r_addend;
2987                       }
2988                     }
2989 
2990                   loc = sreloc->contents;
2991                   loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
2992                   bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc);
2993                   ++sreloc->reloc_count;
2994 
2995                   /* If this reloc is against an external symbol, we do
2996                      not want to fiddle with the addend.  Otherwise, we
2997                      need to include the symbol value so that it becomes
2998                      an addend for the dynamic reloc.  */
2999                   if (! relocate)
3000                     continue;
3001 		  break;
3002                 }
3003 	      else if (r_type != R_M32R_10_PCREL_RELA)
3004 		break;
3005 	      /* Fall through.  */
3006 
3007 	    case (int) R_M32R_10_PCREL :
3008 	      r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section,
3009 					      contents, offset,
3010 					      sec, relocation, addend);
3011               goto check_reloc;
3012 
3013 	    case (int) R_M32R_HI16_SLO :
3014 	    case (int) R_M32R_HI16_ULO :
3015 	      {
3016 		Elf_Internal_Rela *lorel;
3017 
3018 		/* We allow an arbitrary number of HI16 relocs before the
3019 		   LO16 reloc.  This permits gcc to emit the HI and LO relocs
3020 		   itself.  */
3021 		for (lorel = rel + 1;
3022 		     (lorel < relend
3023 		      && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO
3024 			  || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO));
3025 		     lorel++)
3026 		  continue;
3027 		if (lorel < relend
3028 		    && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16)
3029 		  {
3030 		    m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel,
3031 					    contents, relocation + addend);
3032 		    r = bfd_reloc_ok;
3033 		  }
3034 		else
3035 		  r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3036 						contents, offset,
3037 						relocation, addend);
3038 	      }
3039 
3040               goto check_reloc;
3041 
3042             case (int) R_M32R_SDA16_RELA:
3043 	    case (int) R_M32R_SDA16 :
3044 	      {
3045 		const char *name;
3046 
3047 		BFD_ASSERT (sec != NULL);
3048 		name = bfd_get_section_name (abfd, sec);
3049 
3050 		if (   strcmp (name, ".sdata") == 0
3051 		    || strcmp (name, ".sbss") == 0
3052 		    || strcmp (name, ".scommon") == 0)
3053 		  {
3054 		    bfd_vma sda_base;
3055 		    bfd *out_bfd = sec->output_section->owner;
3056 
3057 		    r = m32r_elf_final_sda_base (out_bfd, info,
3058 						 &errmsg,
3059 						 &sda_base);
3060 		    if (r != bfd_reloc_ok)
3061 		      {
3062 			ret = FALSE;
3063 			goto check_reloc;
3064 		      }
3065 
3066 		    /* At this point `relocation' contains the object's
3067 		       address.  */
3068 		    relocation -= sda_base;
3069 		    /* Now it contains the offset from _SDA_BASE_.  */
3070 		  }
3071 		else
3072 		  {
3073 		    (*_bfd_error_handler)
3074 		      (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"),
3075 		       input_bfd,
3076 		       sec,
3077 		       sym_name,
3078 		       m32r_elf_howto_table[(int) r_type].name);
3079 		    /*bfd_set_error (bfd_error_bad_value); ??? why? */
3080 		    ret = FALSE;
3081 		    continue;
3082 		  }
3083 	      }
3084               /* Fall through.  */
3085 
3086 	    default : /* OLD_M32R_RELOC */
3087 
3088 	      r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3089 					    contents, offset,
3090 					    relocation, addend);
3091 	      goto check_reloc;
3092 	    }
3093 
3094           r = _bfd_final_link_relocate (howto, input_bfd, input_section,
3095                                         contents, rel->r_offset,
3096                                         relocation, rel->r_addend);
3097 
3098 	}
3099 
3100     check_reloc:
3101 
3102       if (r != bfd_reloc_ok)
3103 	{
3104 	  /* FIXME: This should be generic enough to go in a utility.  */
3105 	  const char *name;
3106 
3107 	  if (h != NULL)
3108 	    name = h->root.root.string;
3109 	  else
3110 	    {
3111 	      name = (bfd_elf_string_from_elf_section
3112 		      (input_bfd, symtab_hdr->sh_link, sym->st_name));
3113 	      if (name == NULL || *name == '\0')
3114 		name = bfd_section_name (input_bfd, sec);
3115 	    }
3116 
3117 	  if (errmsg != NULL)
3118 	    goto common_error;
3119 
3120 	  switch (r)
3121 	    {
3122 	    case bfd_reloc_overflow:
3123 	      if (! ((*info->callbacks->reloc_overflow)
3124 		     (info, (h ? &h->root : NULL), name, howto->name,
3125 		      (bfd_vma) 0, input_bfd, input_section, offset)))
3126 		return FALSE;
3127 	      break;
3128 
3129 	    case bfd_reloc_undefined:
3130 	      if (! ((*info->callbacks->undefined_symbol)
3131 		     (info, name, input_bfd, input_section,
3132 		      offset, TRUE)))
3133 		return FALSE;
3134 	      break;
3135 
3136 	    case bfd_reloc_outofrange:
3137 	      errmsg = _("internal error: out of range error");
3138 	      goto common_error;
3139 
3140 	    case bfd_reloc_notsupported:
3141 	      errmsg = _("internal error: unsupported relocation error");
3142 	      goto common_error;
3143 
3144 	    case bfd_reloc_dangerous:
3145 	      errmsg = _("internal error: dangerous error");
3146 	      goto common_error;
3147 
3148 	    default:
3149 	      errmsg = _("internal error: unknown error");
3150 	      /* fall through */
3151 
3152 	    common_error:
3153 	      if (!((*info->callbacks->warning)
3154 		    (info, errmsg, name, input_bfd, input_section,
3155 		     offset)))
3156 		return FALSE;
3157 	      break;
3158 	    }
3159 	}
3160     }
3161 
3162   return ret;
3163 }
3164 
3165 /* Finish up dynamic symbol handling.  We set the contents of various
3166    dynamic sections here.  */
3167 
3168 static bfd_boolean
m32r_elf_finish_dynamic_symbol(bfd * output_bfd,struct bfd_link_info * info,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)3169 m32r_elf_finish_dynamic_symbol (bfd *output_bfd,
3170 				struct bfd_link_info *info,
3171 				struct elf_link_hash_entry *h,
3172 				Elf_Internal_Sym *sym)
3173 {
3174   struct elf_m32r_link_hash_table *htab;
3175   bfd *dynobj;
3176   bfd_byte *loc;
3177 
3178 #ifdef DEBUG_PIC
3179   printf ("m32r_elf_finish_dynamic_symbol()\n");
3180 #endif
3181 
3182   htab = m32r_elf_hash_table (info);
3183   dynobj = htab->root.dynobj;
3184 
3185   if (h->plt.offset != (bfd_vma) -1)
3186     {
3187       asection *splt;
3188       asection *sgot;
3189       asection *srela;
3190 
3191       bfd_vma plt_index;
3192       bfd_vma got_offset;
3193       Elf_Internal_Rela rela;
3194 
3195       /* This symbol has an entry in the procedure linkage table.  Set
3196          it up.  */
3197 
3198       BFD_ASSERT (h->dynindx != -1);
3199 
3200       splt = htab->splt;
3201       sgot = htab->sgotplt;
3202       srela = htab->srelplt;
3203       BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL);
3204 
3205       /* Get the index in the procedure linkage table which
3206          corresponds to this symbol.  This is the index of this symbol
3207          in all the symbols for which we are making plt entries.  The
3208          first entry in the procedure linkage table is reserved.  */
3209       plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3210 
3211       /* Get the offset into the .got table of the entry that
3212         corresponds to this function.  Each .got entry is 4 bytes.
3213         The first three are reserved.  */
3214       got_offset = (plt_index + 3) * 4;
3215 
3216       /* Fill in the entry in the procedure linkage table.  */
3217       if (! info->shared)
3218         {
3219           bfd_put_32 (output_bfd,
3220               (PLT_ENTRY_WORD0b
3221                + (((sgot->output_section->vma
3222                     + sgot->output_offset
3223                     + got_offset) >> 16) & 0xffff)),
3224               splt->contents + h->plt.offset);
3225           bfd_put_32 (output_bfd,
3226               (PLT_ENTRY_WORD1b
3227                + ((sgot->output_section->vma
3228                    + sgot->output_offset
3229                    + got_offset) & 0xffff)),
3230               splt->contents + h->plt.offset + 4);
3231           bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3232               splt->contents + h->plt.offset + 8);
3233           bfd_put_32 (output_bfd,
3234               (PLT_ENTRY_WORD3
3235                + plt_index * sizeof (Elf32_External_Rela)),
3236               splt->contents + h->plt.offset + 12);
3237           bfd_put_32 (output_bfd,
3238               (PLT_ENTRY_WORD4
3239                + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3240               splt->contents + h->plt.offset + 16);
3241         }
3242       else
3243         {
3244           bfd_put_32 (output_bfd,
3245               PLT_ENTRY_WORD0 + got_offset,
3246               splt->contents + h->plt.offset);
3247           bfd_put_32 (output_bfd, PLT_ENTRY_WORD1,
3248               splt->contents + h->plt.offset + 4);
3249           bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
3250               splt->contents + h->plt.offset + 8);
3251           bfd_put_32 (output_bfd,
3252               (PLT_ENTRY_WORD3
3253                + plt_index * sizeof (Elf32_External_Rela)),
3254               splt->contents + h->plt.offset + 12);
3255           bfd_put_32 (output_bfd,
3256               (PLT_ENTRY_WORD4
3257                + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)),
3258               splt->contents + h->plt.offset + 16);
3259         }
3260 
3261       /* Fill in the entry in the global offset table.  */
3262       bfd_put_32 (output_bfd,
3263                   (splt->output_section->vma
3264                    + splt->output_offset
3265                    + h->plt.offset
3266                    + 12), /* same offset */
3267                   sgot->contents + got_offset);
3268 
3269       /* Fill in the entry in the .rela.plt section.  */
3270       rela.r_offset = (sgot->output_section->vma
3271                        + sgot->output_offset
3272                        + got_offset);
3273       rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT);
3274       rela.r_addend = 0;
3275       loc = srela->contents;
3276       loc += plt_index * sizeof (Elf32_External_Rela);
3277       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3278 
3279       if (!h->def_regular)
3280         {
3281           /* Mark the symbol as undefined, rather than as defined in
3282              the .plt section.  Leave the value alone.  */
3283           sym->st_shndx = SHN_UNDEF;
3284         }
3285     }
3286 
3287   if (h->got.offset != (bfd_vma) -1)
3288     {
3289       asection *sgot;
3290       asection *srela;
3291       Elf_Internal_Rela rela;
3292 
3293       /* This symbol has an entry in the global offset table.  Set it
3294          up.  */
3295 
3296       sgot = htab->sgot;
3297       srela = htab->srelgot;
3298       BFD_ASSERT (sgot != NULL && srela != NULL);
3299 
3300       rela.r_offset = (sgot->output_section->vma
3301                        + sgot->output_offset
3302                        + (h->got.offset &~ 1));
3303 
3304       /* If this is a -Bsymbolic link, and the symbol is defined
3305          locally, we just want to emit a RELATIVE reloc.  Likewise if
3306          the symbol was forced to be local because of a version file.
3307          The entry in the global offset table will already have been
3308          initialized in the relocate_section function.  */
3309       if (info->shared
3310           && (info->symbolic
3311 	      || h->dynindx == -1
3312 	      || h->forced_local)
3313           && h->def_regular)
3314         {
3315           rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE);
3316           rela.r_addend = (h->root.u.def.value
3317                            + h->root.u.def.section->output_section->vma
3318                            + h->root.u.def.section->output_offset);
3319         }
3320       else
3321         {
3322 	  BFD_ASSERT ((h->got.offset & 1) == 0);
3323           bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3324           rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT);
3325           rela.r_addend = 0;
3326         }
3327 
3328       loc = srela->contents;
3329       loc += srela->reloc_count * sizeof (Elf32_External_Rela);
3330       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3331       ++srela->reloc_count;
3332     }
3333 
3334   if (h->needs_copy)
3335     {
3336       asection *s;
3337       Elf_Internal_Rela rela;
3338 
3339       /* This symbols needs a copy reloc.  Set it up.  */
3340 
3341       BFD_ASSERT (h->dynindx != -1
3342                   && (h->root.type == bfd_link_hash_defined
3343                       || h->root.type == bfd_link_hash_defweak));
3344 
3345       s = bfd_get_section_by_name (h->root.u.def.section->owner,
3346                                    ".rela.bss");
3347       BFD_ASSERT (s != NULL);
3348 
3349       rela.r_offset = (h->root.u.def.value
3350                        + h->root.u.def.section->output_section->vma
3351                        + h->root.u.def.section->output_offset);
3352       rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY);
3353       rela.r_addend = 0;
3354       loc = s->contents;
3355       loc += s->reloc_count * sizeof (Elf32_External_Rela);
3356       bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
3357       ++s->reloc_count;
3358     }
3359 
3360   /* Mark some specially defined symbols as absolute.  */
3361   if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3362       || h == htab->root.hgot)
3363     sym->st_shndx = SHN_ABS;
3364 
3365   return TRUE;
3366 }
3367 
3368 
3369 /* Finish up the dynamic sections.  */
3370 
3371 static bfd_boolean
m32r_elf_finish_dynamic_sections(bfd * output_bfd,struct bfd_link_info * info)3372 m32r_elf_finish_dynamic_sections (bfd *output_bfd,
3373 				  struct bfd_link_info *info)
3374 {
3375   struct elf_m32r_link_hash_table *htab;
3376   bfd *dynobj;
3377   asection *sdyn;
3378   asection *sgot;
3379 
3380 #ifdef DEBUG_PIC
3381   printf ("m32r_elf_finish_dynamic_sections()\n");
3382 #endif
3383 
3384   htab = m32r_elf_hash_table (info);
3385   dynobj = htab->root.dynobj;
3386 
3387   sgot = htab->sgotplt;
3388   sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3389 
3390   if (htab->root.dynamic_sections_created)
3391     {
3392       asection *splt;
3393       Elf32_External_Dyn *dyncon, *dynconend;
3394 
3395       BFD_ASSERT (sgot != NULL && sdyn != NULL);
3396 
3397       dyncon = (Elf32_External_Dyn *) sdyn->contents;
3398       dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
3399 
3400       for (; dyncon < dynconend; dyncon++)
3401         {
3402           Elf_Internal_Dyn dyn;
3403           const char *name;
3404           asection *s;
3405 
3406           bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3407 
3408           switch (dyn.d_tag)
3409             {
3410             default:
3411               break;
3412 
3413             case DT_PLTGOT:
3414               name = ".got";
3415               s = htab->sgot->output_section;
3416               goto get_vma;
3417             case DT_JMPREL:
3418               name = ".rela.plt";
3419               s = htab->srelplt->output_section;
3420             get_vma:
3421               BFD_ASSERT (s != NULL);
3422               dyn.d_un.d_ptr = s->vma;
3423               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3424               break;
3425 
3426             case DT_PLTRELSZ:
3427               s = htab->srelplt->output_section;
3428               BFD_ASSERT (s != NULL);
3429 	      dyn.d_un.d_val = s->size;
3430               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3431               break;
3432 
3433             case DT_RELASZ:
3434               /* My reading of the SVR4 ABI indicates that the
3435                  procedure linkage table relocs (DT_JMPREL) should be
3436                  included in the overall relocs (DT_RELA).  This is
3437                  what Solaris does.  However, UnixWare can not handle
3438                  that case.  Therefore, we override the DT_RELASZ entry
3439                  here to make it not include the JMPREL relocs.  Since
3440                  the linker script arranges for .rela.plt to follow all
3441                  other relocation sections, we don't have to worry
3442                  about changing the DT_RELA entry.  */
3443               if (htab->srelplt != NULL)
3444                 {
3445                   s = htab->srelplt->output_section;
3446 		  dyn.d_un.d_val -= s->size;
3447                 }
3448               bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3449               break;
3450             }
3451         }
3452 
3453       /* Fill in the first entry in the procedure linkage table.  */
3454       splt = htab->splt;
3455       if (splt && splt->size > 0)
3456         {
3457           if (info->shared)
3458             {
3459               bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents);
3460               bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4);
3461               bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8);
3462               bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12);
3463               bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16);
3464             }
3465           else
3466             {
3467               unsigned long addr;
3468               /* addr = .got + 4 */
3469               addr = sgot->output_section->vma + sgot->output_offset + 4;
3470               bfd_put_32 (output_bfd,
3471 			  PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff),
3472 			  splt->contents);
3473               bfd_put_32 (output_bfd,
3474 			  PLT0_ENTRY_WORD1 | (addr & 0xffff),
3475 			  splt->contents + 4);
3476               bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8);
3477               bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12);
3478               bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16);
3479             }
3480 
3481           elf_section_data (splt->output_section)->this_hdr.sh_entsize =
3482             PLT_ENTRY_SIZE;
3483         }
3484     }
3485 
3486   /* Fill in the first three entries in the global offset table.  */
3487   if (sgot && sgot->size > 0)
3488     {
3489       if (sdyn == NULL)
3490         bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3491       else
3492         bfd_put_32 (output_bfd,
3493                     sdyn->output_section->vma + sdyn->output_offset,
3494                     sgot->contents);
3495       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3496       bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3497 
3498       elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3499     }
3500 
3501   return TRUE;
3502 }
3503 
3504 
3505 /* Set the right machine number.  */
3506 
3507 static bfd_boolean
m32r_elf_object_p(bfd * abfd)3508 m32r_elf_object_p (bfd *abfd)
3509 {
3510   switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3511     {
3512     default:
3513     case E_M32R_ARCH:   (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r);  break;
3514     case E_M32RX_ARCH:  (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break;
3515     case E_M32R2_ARCH:  (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break;
3516     }
3517   return TRUE;
3518 }
3519 
3520 /* Store the machine number in the flags field.  */
3521 
3522 static void
m32r_elf_final_write_processing(bfd * abfd,bfd_boolean linker ATTRIBUTE_UNUSED)3523 m32r_elf_final_write_processing (bfd *abfd,
3524 				 bfd_boolean linker ATTRIBUTE_UNUSED)
3525 {
3526   unsigned long val;
3527 
3528   switch (bfd_get_mach (abfd))
3529     {
3530     default:
3531     case bfd_mach_m32r:  val = E_M32R_ARCH; break;
3532     case bfd_mach_m32rx: val = E_M32RX_ARCH; break;
3533     case bfd_mach_m32r2: val = E_M32R2_ARCH; break;
3534     }
3535 
3536   elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH;
3537   elf_elfheader (abfd)->e_flags |= val;
3538 }
3539 
3540 /* Function to keep M32R specific file flags.  */
3541 
3542 static bfd_boolean
m32r_elf_set_private_flags(bfd * abfd,flagword flags)3543 m32r_elf_set_private_flags (bfd *abfd, flagword flags)
3544 {
3545   BFD_ASSERT (!elf_flags_init (abfd)
3546 	      || elf_elfheader (abfd)->e_flags == flags);
3547 
3548   elf_elfheader (abfd)->e_flags = flags;
3549   elf_flags_init (abfd) = TRUE;
3550   return TRUE;
3551 }
3552 
3553 /* Merge backend specific data from an object file to the output
3554    object file when linking.  */
3555 
3556 static bfd_boolean
m32r_elf_merge_private_bfd_data(bfd * ibfd,bfd * obfd)3557 m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3558 {
3559   flagword out_flags;
3560   flagword in_flags;
3561 
3562   if (   bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3563       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3564     return TRUE;
3565 
3566   in_flags  = elf_elfheader (ibfd)->e_flags;
3567   out_flags = elf_elfheader (obfd)->e_flags;
3568 
3569   if (! elf_flags_init (obfd))
3570     {
3571       /* If the input is the default architecture then do not
3572 	 bother setting the flags for the output architecture,
3573 	 instead allow future merges to do this.  If no future
3574 	 merges ever set these flags then they will retain their
3575 	 unitialised values, which surprise surprise, correspond
3576 	 to the default values.  */
3577       if (bfd_get_arch_info (ibfd)->the_default)
3578 	return TRUE;
3579 
3580       elf_flags_init (obfd) = TRUE;
3581       elf_elfheader (obfd)->e_flags = in_flags;
3582 
3583       if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
3584 	  && bfd_get_arch_info (obfd)->the_default)
3585 	return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
3586 				  bfd_get_mach (ibfd));
3587 
3588       return TRUE;
3589     }
3590 
3591   /* Check flag compatibility.  */
3592   if (in_flags == out_flags)
3593     return TRUE;
3594 
3595   if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH))
3596     {
3597       if (   ((in_flags  & EF_M32R_ARCH) != E_M32R_ARCH)
3598           || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH)
3599           || ((in_flags  & EF_M32R_ARCH) == E_M32R2_ARCH))
3600 	{
3601 	  (*_bfd_error_handler)
3602 	    (_("%B: Instruction set mismatch with previous modules"), ibfd);
3603 
3604 	  bfd_set_error (bfd_error_bad_value);
3605 	  return FALSE;
3606 	}
3607     }
3608 
3609   return TRUE;
3610 }
3611 
3612 /* Display the flags field.  */
3613 
3614 static bfd_boolean
m32r_elf_print_private_bfd_data(bfd * abfd,void * ptr)3615 m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr)
3616 {
3617   FILE * file = (FILE *) ptr;
3618 
3619   BFD_ASSERT (abfd != NULL && ptr != NULL);
3620 
3621   _bfd_elf_print_private_bfd_data (abfd, ptr);
3622 
3623   fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags);
3624 
3625   switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH)
3626     {
3627     default:
3628     case E_M32R_ARCH:  fprintf (file, _(": m32r instructions"));  break;
3629     case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break;
3630     case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break;
3631     }
3632 
3633   fputc ('\n', file);
3634 
3635   return TRUE;
3636 }
3637 
3638 static asection *
m32r_elf_gc_mark_hook(asection * sec,struct bfd_link_info * info ATTRIBUTE_UNUSED,Elf_Internal_Rela * rel,struct elf_link_hash_entry * h,Elf_Internal_Sym * sym)3639 m32r_elf_gc_mark_hook (asection *sec,
3640 		       struct bfd_link_info *info ATTRIBUTE_UNUSED,
3641 		       Elf_Internal_Rela *rel,
3642 		       struct elf_link_hash_entry *h,
3643 		       Elf_Internal_Sym *sym)
3644 {
3645   if (h != NULL)
3646     {
3647       switch (ELF32_R_TYPE (rel->r_info))
3648       {
3649       case R_M32R_GNU_VTINHERIT:
3650       case R_M32R_GNU_VTENTRY:
3651       case R_M32R_RELA_GNU_VTINHERIT:
3652       case R_M32R_RELA_GNU_VTENTRY:
3653         break;
3654 
3655       default:
3656         switch (h->root.type)
3657           {
3658           case bfd_link_hash_defined:
3659           case bfd_link_hash_defweak:
3660             return h->root.u.def.section;
3661 
3662           case bfd_link_hash_common:
3663             return h->root.u.c.p->section;
3664 
3665 	  default:
3666 	    break;
3667           }
3668        }
3669      }
3670    else
3671      return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3672 
3673   return NULL;
3674 }
3675 
3676 static bfd_boolean
m32r_elf_gc_sweep_hook(bfd * abfd ATTRIBUTE_UNUSED,struct bfd_link_info * info ATTRIBUTE_UNUSED,asection * sec ATTRIBUTE_UNUSED,const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)3677 m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
3678 			struct bfd_link_info *info ATTRIBUTE_UNUSED,
3679 			asection *sec ATTRIBUTE_UNUSED,
3680 			const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
3681 {
3682   /* Update the got entry reference counts for the section being removed.  */
3683   Elf_Internal_Shdr *symtab_hdr;
3684   struct elf_link_hash_entry **sym_hashes;
3685   bfd_signed_vma *local_got_refcounts;
3686   const Elf_Internal_Rela *rel, *relend;
3687 
3688   elf_section_data (sec)->local_dynrel = NULL;
3689 
3690   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3691   sym_hashes = elf_sym_hashes (abfd);
3692   local_got_refcounts = elf_local_got_refcounts (abfd);
3693 
3694   relend = relocs + sec->reloc_count;
3695   for (rel = relocs; rel < relend; rel++)
3696     {
3697       unsigned long r_symndx;
3698       struct elf_link_hash_entry *h = NULL;
3699 
3700       r_symndx = ELF32_R_SYM (rel->r_info);
3701       if (r_symndx >= symtab_hdr->sh_info)
3702 	{
3703 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3704 	  while (h->root.type == bfd_link_hash_indirect
3705 		 || h->root.type == bfd_link_hash_warning)
3706 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
3707 	}
3708 
3709       switch (ELF32_R_TYPE (rel->r_info))
3710 	{
3711 	case R_M32R_GOT16_HI_ULO:
3712 	case R_M32R_GOT16_HI_SLO:
3713 	case R_M32R_GOT16_LO:
3714 	case R_M32R_GOTOFF:
3715 	case R_M32R_GOTOFF_HI_ULO:
3716 	case R_M32R_GOTOFF_HI_SLO:
3717 	case R_M32R_GOTOFF_LO:
3718 	case R_M32R_GOT24:
3719 	case R_M32R_GOTPC_HI_ULO:
3720 	case R_M32R_GOTPC_HI_SLO:
3721 	case R_M32R_GOTPC_LO:
3722 	case R_M32R_GOTPC24:
3723 	  if (h != NULL)
3724 	    {
3725 	      if (h->got.refcount > 0)
3726 		h->got.refcount--;
3727 	    }
3728 	  else
3729 	    {
3730 	      if (local_got_refcounts && local_got_refcounts[r_symndx] > 0)
3731 		local_got_refcounts[r_symndx]--;
3732 	    }
3733 	  break;
3734 
3735 	case R_M32R_16_RELA:
3736 	case R_M32R_24_RELA:
3737 	case R_M32R_32_RELA:
3738 	case R_M32R_REL32:
3739 	case R_M32R_HI16_ULO_RELA:
3740 	case R_M32R_HI16_SLO_RELA:
3741 	case R_M32R_LO16_RELA:
3742 	case R_M32R_SDA16_RELA:
3743 	case R_M32R_10_PCREL_RELA:
3744 	case R_M32R_18_PCREL_RELA:
3745 	case R_M32R_26_PCREL_RELA:
3746 	  if (h != NULL)
3747 	    {
3748 	      struct elf_m32r_link_hash_entry *eh;
3749 	      struct elf_m32r_dyn_relocs **pp;
3750 	      struct elf_m32r_dyn_relocs *p;
3751 
3752 	      if (!info->shared && h->plt.refcount > 0)
3753 		h->plt.refcount -= 1;
3754 
3755 	      eh = (struct elf_m32r_link_hash_entry *) h;
3756 
3757 	      for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3758 		if (p->sec == sec)
3759 		  {
3760 		    if (   ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
3761 			|| ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
3762 			|| ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
3763 			|| ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
3764 		      p->pc_count -= 1;
3765 		    p->count -= 1;
3766 		    if (p->count == 0)
3767 		      *pp = p->next;
3768 		    break;
3769 		  }
3770 	    }
3771 	  break;
3772 
3773 	case R_M32R_26_PLTREL:
3774 	  if (h != NULL)
3775 	    {
3776 	      if (h->plt.refcount > 0)
3777 		h->plt.refcount--;
3778 	    }
3779 	  break;
3780 
3781 	default:
3782 	  break;
3783 	}
3784     }
3785 
3786   return TRUE;
3787 }
3788 
3789 /* Look through the relocs for a section during the first phase.
3790    Since we don't do .gots or .plts, we just need to consider the
3791    virtual table relocs for gc.  */
3792 
3793 static bfd_boolean
m32r_elf_check_relocs(bfd * abfd,struct bfd_link_info * info,asection * sec,const Elf_Internal_Rela * relocs)3794 m32r_elf_check_relocs (bfd *abfd,
3795 		       struct bfd_link_info *info,
3796 		       asection *sec,
3797 		       const Elf_Internal_Rela *relocs)
3798 {
3799   Elf_Internal_Shdr *symtab_hdr;
3800   struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
3801   const Elf_Internal_Rela *rel;
3802   const Elf_Internal_Rela *rel_end;
3803   struct elf_m32r_link_hash_table *htab;
3804   bfd *dynobj;
3805   bfd_vma *local_got_offsets;
3806   asection *sgot, *srelgot, *sreloc;
3807 
3808   if (info->relocatable)
3809     return TRUE;
3810 
3811   sgot = srelgot = sreloc = NULL;
3812 
3813   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3814   sym_hashes = elf_sym_hashes (abfd);
3815   sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
3816   if (!elf_bad_symtab (abfd))
3817     sym_hashes_end -= symtab_hdr->sh_info;
3818 
3819   htab = m32r_elf_hash_table (info);
3820   dynobj = htab->root.dynobj;
3821   local_got_offsets = elf_local_got_offsets (abfd);
3822 
3823   rel_end = relocs + sec->reloc_count;
3824   for (rel = relocs; rel < rel_end; rel++)
3825     {
3826       int r_type;
3827       struct elf_link_hash_entry *h;
3828       unsigned long r_symndx;
3829 
3830       r_symndx = ELF32_R_SYM (rel->r_info);
3831       r_type = ELF32_R_TYPE (rel->r_info);
3832       if (r_symndx < symtab_hdr->sh_info)
3833         h = NULL;
3834       else
3835 	{
3836 	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3837 	  while (h->root.type == bfd_link_hash_indirect
3838 		 || h->root.type == bfd_link_hash_warning)
3839 	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
3840 	}
3841 
3842       /* Some relocs require a global offset table.  */
3843       if (htab->sgot == NULL)
3844         {
3845           switch (r_type)
3846             {
3847             case R_M32R_GOT16_HI_ULO:
3848             case R_M32R_GOT16_HI_SLO:
3849             case R_M32R_GOTOFF:
3850             case R_M32R_GOTOFF_HI_ULO:
3851             case R_M32R_GOTOFF_HI_SLO:
3852             case R_M32R_GOTOFF_LO:
3853             case R_M32R_GOT16_LO:
3854             case R_M32R_GOTPC24:
3855             case R_M32R_GOTPC_HI_ULO:
3856             case R_M32R_GOTPC_HI_SLO:
3857             case R_M32R_GOTPC_LO:
3858             case R_M32R_GOT24:
3859               if (dynobj == NULL)
3860                 htab->root.dynobj = dynobj = abfd;
3861               if (! create_got_section (dynobj, info))
3862                 return FALSE;
3863               break;
3864 
3865             default:
3866               break;
3867           }
3868         }
3869 
3870       switch (r_type)
3871         {
3872 	case R_M32R_GOT16_HI_ULO:
3873 	case R_M32R_GOT16_HI_SLO:
3874 	case R_M32R_GOT16_LO:
3875         case R_M32R_GOT24:
3876 
3877           if (h != NULL)
3878             h->got.refcount += 1;
3879           else
3880             {
3881               bfd_signed_vma *local_got_refcounts;
3882 
3883               /* This is a global offset table entry for a local
3884                  symbol.  */
3885               local_got_refcounts = elf_local_got_refcounts (abfd);
3886               if (local_got_refcounts == NULL)
3887                 {
3888                   bfd_size_type size;
3889 
3890                   size = symtab_hdr->sh_info;
3891                   size *= sizeof (bfd_signed_vma);
3892                   local_got_refcounts = bfd_zalloc (abfd, size);
3893                   if (local_got_refcounts == NULL)
3894                     return FALSE;
3895                   elf_local_got_refcounts (abfd) = local_got_refcounts;
3896                 }
3897               local_got_refcounts[r_symndx] += 1;
3898             }
3899           break;
3900 
3901         case R_M32R_26_PLTREL:
3902           /* This symbol requires a procedure linkage table entry.  We
3903              actually build the entry in adjust_dynamic_symbol,
3904              because this might be a case of linking PIC code without
3905              linking in any dynamic objects, in which case we don't
3906              need to generate a procedure linkage table after all.  */
3907 
3908 	  /* If this is a local symbol, we resolve it directly without
3909 	     creating a procedure linkage table entry.  */
3910           if (h == NULL)
3911             continue;
3912 
3913           if (h->forced_local)
3914             break;
3915 
3916           h->needs_plt = 1;
3917 	  h->plt.refcount += 1;
3918           break;
3919 
3920         case R_M32R_16_RELA:
3921         case R_M32R_24_RELA:
3922         case R_M32R_32_RELA:
3923         case R_M32R_REL32:
3924         case R_M32R_HI16_ULO_RELA:
3925         case R_M32R_HI16_SLO_RELA:
3926         case R_M32R_LO16_RELA:
3927         case R_M32R_SDA16_RELA:
3928 	case R_M32R_10_PCREL_RELA:
3929         case R_M32R_18_PCREL_RELA:
3930         case R_M32R_26_PCREL_RELA:
3931 
3932           if (h != NULL && !info->shared)
3933             {
3934               h->non_got_ref = 1;
3935               h->plt.refcount += 1;
3936             }
3937 
3938           /* If we are creating a shared library, and this is a reloc
3939              against a global symbol, or a non PC relative reloc
3940              against a local symbol, then we need to copy the reloc
3941              into the shared library.  However, if we are linking with
3942              -Bsymbolic, we do not need to copy a reloc against a
3943              global symbol which is defined in an object we are
3944              including in the link (i.e., DEF_REGULAR is set).  At
3945              this point we have not seen all the input files, so it is
3946              possible that DEF_REGULAR is not set now but will be set
3947              later (it is never cleared).  We account for that
3948              possibility below by storing information in the
3949              dyn_relocs field of the hash table entry. A similar
3950              situation occurs when creating shared libraries and symbol
3951              visibility changes render the symbol local.
3952 
3953              If on the other hand, we are creating an executable, we
3954              may need to keep relocations for symbols satisfied by a
3955              dynamic library if we manage to avoid copy relocs for the
3956              symbol.  */
3957           if ((info->shared
3958                && (sec->flags & SEC_ALLOC) != 0
3959 	       && ((   r_type != R_M32R_26_PCREL_RELA
3960                     && r_type != R_M32R_18_PCREL_RELA
3961                     && r_type != R_M32R_10_PCREL_RELA
3962                     && r_type != R_M32R_REL32)
3963 	           || (h != NULL
3964 		       && (! info->symbolic
3965 		           || h->root.type == bfd_link_hash_defweak
3966 		           || !h->def_regular))))
3967               || (!info->shared
3968                   && (sec->flags & SEC_ALLOC) != 0
3969                   && h != NULL
3970                   && (h->root.type == bfd_link_hash_defweak
3971                       || !h->def_regular)))
3972             {
3973               struct elf_m32r_dyn_relocs *p;
3974               struct elf_m32r_dyn_relocs **head;
3975 
3976               if (dynobj == NULL)
3977                 htab->root.dynobj = dynobj = abfd;
3978 
3979               /* When creating a shared object, we must copy these
3980                  relocs into the output file.  We create a reloc
3981                  section in dynobj and make room for the reloc.  */
3982               if (sreloc == NULL)
3983                 {
3984                   const char *name;
3985 
3986                   name = (bfd_elf_string_from_elf_section
3987                           (abfd,
3988                            elf_elfheader (abfd)->e_shstrndx,
3989                            elf_section_data (sec)->rel_hdr.sh_name));
3990                   if (name == NULL)
3991                     return FALSE;
3992 
3993                   BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3994                               && strcmp (bfd_get_section_name (abfd, sec),
3995                                          name + 5) == 0);
3996 
3997                   sreloc = bfd_get_section_by_name (dynobj, name);
3998                   if (sreloc == NULL)
3999                     {
4000                       flagword flags;
4001 
4002                       flags = (SEC_HAS_CONTENTS | SEC_READONLY
4003                                | SEC_IN_MEMORY | SEC_LINKER_CREATED);
4004                       if ((sec->flags & SEC_ALLOC) != 0)
4005                         flags |= SEC_ALLOC | SEC_LOAD;
4006                       sreloc = bfd_make_section_with_flags (dynobj,
4007 							    name,
4008 							    flags);
4009                       if (sreloc == NULL
4010                           || ! bfd_set_section_alignment (dynobj, sreloc, 2))
4011                         return FALSE;
4012                     }
4013                   elf_section_data (sec)->sreloc = sreloc;
4014                 }
4015 
4016               /* If this is a global symbol, we count the number of
4017                  relocations we need for this symbol.  */
4018               if (h != NULL)
4019                 head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs;
4020               else
4021                 {
4022                   asection *s;
4023                   void *vpp;
4024 
4025                   /* Track dynamic relocs needed for local syms too.  */
4026                   s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
4027                                                  sec, r_symndx);
4028                   if (s == NULL)
4029                     return FALSE;
4030 
4031 		  vpp = &elf_section_data (s)->local_dynrel;
4032                   head = (struct elf_m32r_dyn_relocs **) vpp;
4033                 }
4034 
4035               p = *head;
4036               if (p == NULL || p->sec != sec)
4037                 {
4038                   bfd_size_type amt = sizeof (*p);
4039 
4040                   p = bfd_alloc (dynobj, amt);
4041                   if (p == NULL)
4042                     return FALSE;
4043                   p->next = *head;
4044                   *head = p;
4045                   p->sec = sec;
4046                   p->count = 0;
4047                   p->pc_count = 0;
4048                 }
4049 
4050               p->count += 1;
4051               if (   ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA
4052                   || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA
4053 		  || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA
4054 		  || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32)
4055                 p->pc_count += 1;
4056             }
4057           break;
4058 
4059         /* This relocation describes the C++ object vtable hierarchy.
4060            Reconstruct it for later use during GC.  */
4061         case R_M32R_RELA_GNU_VTINHERIT:
4062         case R_M32R_GNU_VTINHERIT:
4063           if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
4064             return FALSE;
4065           break;
4066 
4067         /* This relocation describes which C++ vtable entries are actually
4068            used.  Record for later use during GC.  */
4069         case R_M32R_GNU_VTENTRY:
4070           if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
4071             return FALSE;
4072           break;
4073         case R_M32R_RELA_GNU_VTENTRY:
4074           if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
4075             return FALSE;
4076           break;
4077         }
4078     }
4079 
4080   return TRUE;
4081 }
4082 
4083 static const struct bfd_elf_special_section m32r_elf_special_sections[] =
4084 {
4085   { ".sbss",    5, -2, SHT_NOBITS,   SHF_ALLOC + SHF_WRITE },
4086   { ".sdata",   6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
4087   { NULL,       0,  0, 0,            0 }
4088 };
4089 
4090 static bfd_boolean
m32r_elf_fake_sections(bfd * abfd,Elf_Internal_Shdr * hdr ATTRIBUTE_UNUSED,asection * sec)4091 m32r_elf_fake_sections (bfd *abfd,
4092 			Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED,
4093 			asection *sec)
4094 {
4095   const char *name;
4096 
4097   name = bfd_get_section_name (abfd, sec);
4098 
4099   /* The generic elf_fake_sections will set up REL_HDR using the
4100      default kind of relocations.  But, we may actually need both
4101      kinds of relocations, so we set up the second header here.
4102 
4103      This is not necessary for the O32 ABI since that only uses Elf32_Rel
4104      relocations (cf. System V ABI, MIPS RISC Processor Supplement,
4105      3rd Edition, p. 4-17).  It breaks the IRIX 5/6 32-bit ld, since one
4106      of the resulting empty .rela.<section> sections starts with
4107      sh_offset == object size, and ld doesn't allow that.  While the check
4108      is arguably bogus for empty or SHT_NOBITS sections, it can easily be
4109      avoided by not emitting those useless sections in the first place.  */
4110   if ((sec->flags & SEC_RELOC) != 0)
4111     {
4112       struct bfd_elf_section_data *esd;
4113       bfd_size_type amt = sizeof (Elf_Internal_Shdr);
4114 
4115       esd = elf_section_data (sec);
4116       BFD_ASSERT (esd->rel_hdr2 == NULL);
4117       esd->rel_hdr2 = bfd_zalloc (abfd, amt);
4118       if (!esd->rel_hdr2)
4119         return FALSE;
4120       _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec,
4121                                 !sec->use_rela_p);
4122     }
4123 
4124   return TRUE;
4125 }
4126 
4127 static enum elf_reloc_type_class
m32r_elf_reloc_type_class(const Elf_Internal_Rela * rela)4128 m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela)
4129 {
4130   switch ((int) ELF32_R_TYPE (rela->r_info))
4131     {
4132     case R_M32R_RELATIVE:  return reloc_class_relative;
4133     case R_M32R_JMP_SLOT:  return reloc_class_plt;
4134     case R_M32R_COPY:      return reloc_class_copy;
4135     default:      	   return reloc_class_normal;
4136     }
4137 }
4138 
4139 #define ELF_ARCH		bfd_arch_m32r
4140 #define ELF_MACHINE_CODE	EM_M32R
4141 #define ELF_MACHINE_ALT1	EM_CYGNUS_M32R
4142 #define ELF_MAXPAGESIZE		0x1 /* Explicitly requested by Mitsubishi.  */
4143 
4144 #define TARGET_BIG_SYM          bfd_elf32_m32r_vec
4145 #define TARGET_BIG_NAME		"elf32-m32r"
4146 #define TARGET_LITTLE_SYM       bfd_elf32_m32rle_vec
4147 #define TARGET_LITTLE_NAME      "elf32-m32rle"
4148 
4149 #define elf_info_to_howto			m32r_info_to_howto
4150 #define elf_info_to_howto_rel			m32r_info_to_howto_rel
4151 #define elf_backend_section_from_bfd_section	_bfd_m32r_elf_section_from_bfd_section
4152 #define elf_backend_symbol_processing		_bfd_m32r_elf_symbol_processing
4153 #define elf_backend_add_symbol_hook		m32r_elf_add_symbol_hook
4154 #define elf_backend_relocate_section		m32r_elf_relocate_section
4155 #define elf_backend_gc_mark_hook                m32r_elf_gc_mark_hook
4156 #define elf_backend_gc_sweep_hook               m32r_elf_gc_sweep_hook
4157 #define elf_backend_check_relocs                m32r_elf_check_relocs
4158 
4159 #define elf_backend_create_dynamic_sections     m32r_elf_create_dynamic_sections
4160 #define bfd_elf32_bfd_link_hash_table_create    m32r_elf_link_hash_table_create
4161 #define elf_backend_size_dynamic_sections       m32r_elf_size_dynamic_sections
4162 #define elf_backend_finish_dynamic_sections     m32r_elf_finish_dynamic_sections
4163 #define elf_backend_adjust_dynamic_symbol       m32r_elf_adjust_dynamic_symbol
4164 #define elf_backend_finish_dynamic_symbol       m32r_elf_finish_dynamic_symbol
4165 #define elf_backend_reloc_type_class            m32r_elf_reloc_type_class
4166 #define elf_backend_copy_indirect_symbol        m32r_elf_copy_indirect_symbol
4167 
4168 #define elf_backend_can_gc_sections             1
4169 /*#if !USE_REL
4170 #define elf_backend_rela_normal			1
4171 #endif*/
4172 #define elf_backend_can_refcount 1
4173 #define elf_backend_want_got_plt 1
4174 #define elf_backend_plt_readonly 1
4175 #define elf_backend_want_plt_sym 0
4176 #define elf_backend_got_header_size 12
4177 
4178 #define elf_backend_may_use_rel_p       1
4179 #ifdef USE_M32R_OLD_RELOC
4180 #define elf_backend_default_use_rela_p  0
4181 #define elf_backend_may_use_rela_p      0
4182 #else
4183 #define elf_backend_default_use_rela_p  1
4184 #define elf_backend_may_use_rela_p      1
4185 #define elf_backend_fake_sections       m32r_elf_fake_sections
4186 #endif
4187 
4188 #define elf_backend_object_p			m32r_elf_object_p
4189 #define elf_backend_final_write_processing 	m32r_elf_final_write_processing
4190 #define bfd_elf32_bfd_merge_private_bfd_data 	m32r_elf_merge_private_bfd_data
4191 #define bfd_elf32_bfd_set_private_flags		m32r_elf_set_private_flags
4192 #define bfd_elf32_bfd_print_private_bfd_data	m32r_elf_print_private_bfd_data
4193 #define elf_backend_special_sections		m32r_elf_special_sections
4194 
4195 #include "elf32-target.h"
4196 
4197 #undef  ELF_MAXPAGESIZE
4198 #define ELF_MAXPAGESIZE         0x1000
4199 
4200 #undef  TARGET_BIG_SYM
4201 #define TARGET_BIG_SYM          bfd_elf32_m32rlin_vec
4202 #undef  TARGET_BIG_NAME
4203 #define TARGET_BIG_NAME         "elf32-m32r-linux"
4204 #undef  TARGET_LITTLE_SYM
4205 #define TARGET_LITTLE_SYM       bfd_elf32_m32rlelin_vec
4206 #undef  TARGET_LITTLE_NAME
4207 #define TARGET_LITTLE_NAME      "elf32-m32rle-linux"
4208 #undef  elf32_bed
4209 #define elf32_bed               elf32_m32r_lin_bed
4210 
4211 #include "elf32-target.h"
4212 
4213