1 /* BFD back-end for National Semiconductor's CR16C ELF
2 Copyright 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 #include "elf/cr16c.h"
28 #define USE_REL 1 /* CR16C uses REL relocations instead of RELA. */
30 /* The following definition is based on EMPTY_HOWTO macro,
31 but also initiates the "name" field in HOWTO struct. */
32 #define ONLY_NAME_HOWTO(C) \
33 HOWTO ((C), 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, \
34 STRINGX(C), FALSE, 0, 0, FALSE)
36 /* reloc_map_index array maps CRASM relocation type into a BFD
37 relocation enum. The array's indices are synchronized with
38 RINDEX_16C_* indices, created in include/elf/cr16c.h.
40 1. elf32-cr16c.c : elf_cr16c_reloc_type_lookup().
41 2. asreloc.c : find_reloc_type(). */
43 RELOC_MAP reloc_map_index
[RINDEX_16C_MAX
] =
45 {R_16C_NUM08
, BFD_RELOC_16C_NUM08
},
46 {R_16C_NUM08_C
, BFD_RELOC_16C_NUM08_C
},
47 {R_16C_NUM16
, BFD_RELOC_16C_NUM16
},
48 {R_16C_NUM16_C
, BFD_RELOC_16C_NUM16_C
},
49 {R_16C_NUM32
, BFD_RELOC_16C_NUM32
},
50 {R_16C_NUM32_C
, BFD_RELOC_16C_NUM32_C
},
51 {R_16C_DISP04
, BFD_RELOC_16C_DISP04
},
52 {R_16C_DISP04_C
, BFD_RELOC_16C_DISP04_C
},
53 {R_16C_DISP08
, BFD_RELOC_16C_DISP08
},
54 {R_16C_DISP08_C
, BFD_RELOC_16C_DISP08_C
},
55 {R_16C_DISP16
, BFD_RELOC_16C_DISP16
},
56 {R_16C_DISP16_C
, BFD_RELOC_16C_DISP16_C
},
57 {R_16C_DISP24
, BFD_RELOC_16C_DISP24
},
58 {R_16C_DISP24_C
, BFD_RELOC_16C_DISP24_C
},
59 {R_16C_DISP24a
, BFD_RELOC_16C_DISP24a
},
60 {R_16C_DISP24a_C
, BFD_RELOC_16C_DISP24a_C
},
61 {R_16C_REG04
, BFD_RELOC_16C_REG04
},
62 {R_16C_REG04_C
, BFD_RELOC_16C_REG04_C
},
63 {R_16C_REG04a
, BFD_RELOC_16C_REG04a
},
64 {R_16C_REG04a_C
, BFD_RELOC_16C_REG04a_C
},
65 {R_16C_REG14
, BFD_RELOC_16C_REG14
},
66 {R_16C_REG14_C
, BFD_RELOC_16C_REG14_C
},
67 {R_16C_REG16
, BFD_RELOC_16C_REG16
},
68 {R_16C_REG16_C
, BFD_RELOC_16C_REG16_C
},
69 {R_16C_REG20
, BFD_RELOC_16C_REG20
},
70 {R_16C_REG20_C
, BFD_RELOC_16C_REG20_C
},
71 {R_16C_ABS20
, BFD_RELOC_16C_ABS20
},
72 {R_16C_ABS20_C
, BFD_RELOC_16C_ABS20_C
},
73 {R_16C_ABS24
, BFD_RELOC_16C_ABS24
},
74 {R_16C_ABS24_C
, BFD_RELOC_16C_ABS24_C
},
75 {R_16C_IMM04
, BFD_RELOC_16C_IMM04
},
76 {R_16C_IMM04_C
, BFD_RELOC_16C_IMM04_C
},
77 {R_16C_IMM16
, BFD_RELOC_16C_IMM16
},
78 {R_16C_IMM16_C
, BFD_RELOC_16C_IMM16_C
},
79 {R_16C_IMM20
, BFD_RELOC_16C_IMM20
},
80 {R_16C_IMM20_C
, BFD_RELOC_16C_IMM20_C
},
81 {R_16C_IMM24
, BFD_RELOC_16C_IMM24
},
82 {R_16C_IMM24_C
, BFD_RELOC_16C_IMM24_C
},
83 {R_16C_IMM32
, BFD_RELOC_16C_IMM32
},
84 {R_16C_IMM32_C
, BFD_RELOC_16C_IMM32_C
}
87 static reloc_howto_type elf_howto_table
[] =
89 /* 00 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM08
),
90 /* 01 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM08_C
),
91 /* 02 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM16
),
92 /* 03 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM16_C
),
93 /* 04 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM32
),
94 /* 05 */ ONLY_NAME_HOWTO (RINDEX_16C_NUM32_C
),
95 /* 06 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP04
),
96 /* 07 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP04_C
),
97 /* 08 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP08
),
98 /* 09 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP08_C
),
99 /* 10 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP16
),
100 /* 11 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP16_C
),
101 /* 12 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24
),
102 /* 13 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24_C
),
103 /* 14 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24a
),
104 /* 15 */ ONLY_NAME_HOWTO (RINDEX_16C_DISP24a_C
),
105 /* 16 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04
),
106 /* 17 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04_C
),
107 /* 18 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04a
),
108 /* 19 */ ONLY_NAME_HOWTO (RINDEX_16C_REG04a_C
),
109 /* 20 */ ONLY_NAME_HOWTO (RINDEX_16C_REG14
),
110 /* 21 */ ONLY_NAME_HOWTO (RINDEX_16C_REG14_C
),
111 /* 22 */ ONLY_NAME_HOWTO (RINDEX_16C_REG16
),
112 /* 23 */ ONLY_NAME_HOWTO (RINDEX_16C_REG16_C
),
113 /* 24 */ ONLY_NAME_HOWTO (RINDEX_16C_REG20
),
114 /* 25 */ ONLY_NAME_HOWTO (RINDEX_16C_REG20_C
),
115 /* 26 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS20
),
116 /* 27 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS20_C
),
117 /* 28 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS24
),
118 /* 29 */ ONLY_NAME_HOWTO (RINDEX_16C_ABS24_C
),
119 /* 30 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM04
),
120 /* 31 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM04_C
),
121 /* 32 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM16
),
122 /* 33 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM16_C
),
123 /* 34 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM20
),
124 /* 35 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM20_C
),
125 /* 36 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM24
),
126 /* 37 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM24_C
),
127 /* 38 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM32
),
128 /* 39 */ ONLY_NAME_HOWTO (RINDEX_16C_IMM32_C
)
132 /* Code to turn a code_type into a howto ptr, uses the above howto table. */
134 static reloc_howto_type
*
135 elf_cr16c_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
136 bfd_reloc_code_real_type code
)
140 for (i
= 0; i
< RINDEX_16C_MAX
; i
++)
142 if (code
== reloc_map_index
[i
].bfd_reloc_enum
)
144 /* printf ("CR16C Relocation Type is - %x\n", code); */
145 return & elf_howto_table
[i
];
149 /* printf ("This relocation Type is not supported - %x\n", code); */
153 static reloc_howto_type
*
154 elf_cr16c_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
159 for (i
= 0; i
< sizeof (elf_howto_table
) / sizeof (elf_howto_table
[0]); i
++)
160 if (elf_howto_table
[i
].name
!= NULL
161 && strcasecmp (elf_howto_table
[i
].name
, r_name
) == 0)
162 return &elf_howto_table
[i
];
168 elf_cr16c_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
169 arelent
*cache_ptr ATTRIBUTE_UNUSED
,
170 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
)
176 elf_cr16c_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
,
178 Elf_Internal_Rela
*dst
)
180 unsigned int r_type
= ELF32_R_TYPE (dst
->r_info
);
182 BFD_ASSERT (r_type
< (unsigned int) RINDEX_16C_MAX
);
183 cache_ptr
->howto
= &elf_howto_table
[r_type
];
186 /* Perform a relocation as part of a final link. */
188 static bfd_reloc_status_type
189 cr16c_elf_final_link_relocate (reloc_howto_type
*howto
,
191 bfd
*output_bfd ATTRIBUTE_UNUSED
,
192 asection
*input_section
,
196 bfd_vma addend ATTRIBUTE_UNUSED
,
197 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
198 asection
*sym_sec ATTRIBUTE_UNUSED
,
199 int is_local ATTRIBUTE_UNUSED
)
202 short sword
; /* Extracted from the hole and put back. */
203 unsigned long format
, addr_type
, code_factor
;
205 unsigned short r_type
;
206 asymbol
*symbol
= NULL
;
208 unsigned long disp20_opcod
;
213 long plus_factor
= 0; /* To be added to the hole. */
215 #define MIN_BYTE ((int) 0xFFFFFF80)
216 #define MIN_WORD ((int) 0xFFFF8000)
217 #define MAX_UWORD ((unsigned) 0x0000FFFF)
218 #define MAX_UBYTE ((unsigned) 0x000000FF)
220 r_type
= reloc_map_index
[howto
->type
].cr_reloc_type
;
221 format
= r_type
& R_FORMAT
;
222 size
= r_type
& R_SIZESP
;
223 addr_type
= r_type
& R_ADDRTYPE
;
224 code_factor
= ((addr_type
== R_CODE_ADDR
) ? 1 : 0);
227 symbol
= sym_sec
->symbol
;
234 case R_S_16C_08
: /* One byte. */
235 value
= bfd_get_8 (abfd
, (char *) data
+ octets
);
237 case R_S_16C_16
: /* Two bytes. */
238 sword
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ octets
);
241 case R_S_16C_32
: /* Four bytes. */
242 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
245 return bfd_reloc_notsupported
;
252 case R_S_16C_04
: /* word1(4-7). */
253 value
= bfd_get_8 (abfd
, (char *) data
+ octets
);
254 left_val
= value
& 0xF;
255 value
= (value
& 0xF0) >> 4;
259 case R_S_16C_08
: /* word1(0-3,8-11). */
260 sword
= bfd_get_16 (abfd
, (char *) data
+ octets
);
261 value
= sword
& 0x000F;
262 value
|= ((sword
& 0x0F00) >> 4);
263 left_val
= sword
& 0xF0F0;
268 case R_S_16C_16
: /* word2. */
269 sword
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ octets
);
271 value
= ((value
& 0xFFFE) >> 1) | ((value
& 0x1) << 15);
276 case R_S_16C_24_a
: /* word1(0-7),word2. */
277 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
278 left_val
= value
& 0x0000FF00;
279 value
= ((value
& 0xFFFE0000) >> 17) |
280 ((value
& 0x00010000) << 7) | ((value
& 0x000000FF) << 15);
282 if (value
& 0x1000000)
285 case R_S_16C_24
: /* word2(0-3,8-11),word3. */
286 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
287 left_val
= value
& 0x0000F0F0;
288 value
= ((value
>> 16) & 0x0000FFFF) |
289 ((value
& 0x00000F00) << 8) | ((value
& 0x0000000F) << 20);
291 value
= ((value
& 0x00FFFFFE) >> 1) | ((value
& 0x00000001) << 23);
294 if (value
& 0x1000000)
298 return bfd_reloc_notsupported
;
305 case R_S_16C_04
: /* word1(12-15) not scaled. */
306 value
= bfd_get_8 (abfd
, (char *) data
+ octets
);
307 left_val
= value
& 0xF0;
310 case R_S_16C_04_a
: /* word1(12-15) scaled by 2. */
311 value
= bfd_get_8 (abfd
, (char *) data
+ octets
);
312 left_val
= value
& 0xF0;
316 case R_S_16C_14
: /* word1(4-5),word2(0-3,8-15). */
317 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
318 left_val
= value
& 0x00F0FFCF;
319 value
= ((value
& 0xc0000000) >> 24) |
320 ((value
& 0x3F000000) >> 16) |
321 ((value
& 0x000F0000) >> 16) | (value
& 0x00000030);
323 case R_S_16C_16
: /* word2. */
324 sword
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ octets
);
327 case R_S_16C_20
: /* word2(8-11),word3. */
328 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
329 left_val
= value
& 0xF0;
330 value
= (value
& 0xF) << 16;
331 sword
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ octets
+ 1);
332 value
= value
| (unsigned short) sword
;
333 disp20_opcod
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
- 3);
334 disp20_opcod
|= 0x0FFF0000;
335 if ((disp20_opcod
== 0x4FFF0018) || /* loadb -disp20(reg) */
336 (disp20_opcod
== 0x5FFF0018) || /* loadb -disp20(rp) */
337 (disp20_opcod
== 0x8FFF0018) || /* loadd -disp20(reg) */
338 (disp20_opcod
== 0x9FFF0018) || /* loadd -disp20(rp) */
339 (disp20_opcod
== 0xCFFF0018) || /* loadw -disp20(reg) */
340 (disp20_opcod
== 0xDFFF0018) || /* loadw -disp20(rp) */
341 (disp20_opcod
== 0x4FFF0019) || /* storb -disp20(reg) */
342 (disp20_opcod
== 0x5FFF0019) || /* storb -disp20(rp) */
343 (disp20_opcod
== 0x8FFF0019) || /* stord -disp20(reg) */
344 (disp20_opcod
== 0x9FFF0019) || /* stord -disp20(rp) */
345 (disp20_opcod
== 0xCFFF0019) || /* storw -disp20(reg) */
346 (disp20_opcod
== 0xDFFF0019))
347 { /* storw -disp20(rp). */
354 return bfd_reloc_notsupported
;
361 case R_S_16C_20
: /* word1(0-3),word2. */
362 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
363 left_val
= value
& 0x0000FFF0;
364 value
= ((value
& 0xFFFF0000) >> 16) |
365 ((value
& 0x0000000F) << 16);
367 case R_S_16C_24
: /* word2(0-3,8-11),word3. */
368 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
369 left_val
= value
& 0x0000F0F0;
370 value
= ((value
& 0xFFFF0000) >> 16) |
371 ((value
& 0x00000F00) << 8) | ((value
& 0x0000000F) << 20);
374 return bfd_reloc_notsupported
;
381 case R_S_16C_04
: /* word1/2(4-7). */
382 value
= bfd_get_8 (abfd
, (char *) data
+ octets
);
383 left_val
= value
& 0xF;
384 value
= (value
& 0xF0) >> 4;
386 case R_S_16C_16
: /* word2. */
387 sword
= bfd_get_16 (abfd
, (bfd_byte
*) data
+ octets
);
390 case R_S_16C_20
: /* word1(0-3),word2. */
391 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
392 left_val
= value
& 0x0000FFF0;
393 value
= ((value
& 0xFFFF0000) >> 16) |
394 ((value
& 0x0000000F) << 16);
396 case R_S_16C_32
: /* word2, word3. */
397 value
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
398 value
= ((value
& 0x0000FFFF) << 16) |
399 ((value
& 0xFFFF0000) >> 16);
402 return bfd_reloc_notsupported
;
406 return bfd_reloc_notsupported
;
409 switch ((r_type
& R_RELTO
) >> 4)
413 plus_factor
= Rvalue
;
415 case 1: /* R_PCREL. */
416 plus_factor
= Rvalue
-
417 (input_section
->output_section
->vma
+ input_section
->output_offset
);
420 return bfd_reloc_notsupported
;
425 if (plus_factor
>= -value
)
427 /* We need to change load/stor with negative
428 displ opcode to positive disp opcode (CR16C). */
431 value
= value
+ (plus_factor
>> code_factor
);
438 case R_S_16C_08
: /* One byte. */
439 if (value
> (int) MAX_UBYTE
|| value
< MIN_BYTE
)
440 return bfd_reloc_overflow
;
442 bfd_put_8 (abfd
, (bfd_vma
) value
, (unsigned char *) data
+ octets
);
445 case R_S_16C_16
: /* Two bytes. */
446 if (value
> (int) MAX_UWORD
|| value
< MIN_WORD
)
447 return bfd_reloc_overflow
;
450 bfd_put_16 (abfd
, (bfd_vma
) sword
,
451 (unsigned char *) data
+ octets
);
454 case R_S_16C_32
: /* Four bytes. */
456 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
460 return bfd_reloc_notsupported
;
467 case R_S_16C_04
: /* word1(4-7). */
468 if ((value
- 32) > 32 || value
< 2)
469 return bfd_reloc_overflow
;
475 bfd_put_8 (abfd
, (bfd_vma
) value
, (unsigned char *) data
+ octets
);
478 case R_S_16C_08
: /* word1(0-3,8-11). */
479 if (value
> 255 || value
< -256 || value
== 0x80)
480 return bfd_reloc_overflow
;
483 sword
= value
& 0x000F;
484 sword
|= (value
& 0x00F0) << 4;
486 bfd_put_16 (abfd
, (bfd_vma
) sword
,
487 (unsigned char *) data
+ octets
);
490 case R_S_16C_16
: /* word2. */
491 if (value
> 65535 || value
< -65536)
492 return bfd_reloc_overflow
;
495 value
= ((value
& 0x8000) >> 15) | ((value
& 0x7FFF) << 1);
497 bfd_put_16 (abfd
, (bfd_vma
) sword
,
498 (unsigned char *) data
+ octets
);
501 case R_S_16C_24_a
: /* word1(0-7),word2. */
502 if (value
> 16777215 || value
< -16777216)
503 return bfd_reloc_overflow
;
506 value
= ((value
& 0x00007FFF) << 17) |
507 ((value
& 0x00800000) >> 7) | ((value
& 0x007F8000) >> 15);
509 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
512 case R_S_16C_24
: /* word2(0-3,8-11),word3. */
513 if (value
> 16777215 || value
< -16777216)
514 return bfd_reloc_overflow
;
518 value
= ((value
& 0x007FFFFF) << 1) | ((value
& 0x00800000) >> 23);
520 value
= ((value
& 0x0000FFFF) << 16) |
521 ((value
& 0x000F0000) >> 8) | ((value
& 0x00F00000) >> 20);
523 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
527 return bfd_reloc_notsupported
;
534 case R_S_16C_04
: /* word1(12-15) not scaled. */
535 if (value
> 13 || value
< 0)
536 return bfd_reloc_overflow
;
539 bfd_put_8 (abfd
, (bfd_vma
) value
, (unsigned char *) data
+ octets
);
542 case R_S_16C_04_a
: /* word1(12-15) not scaled. */
543 if (value
> 26 || value
< 0)
544 return bfd_reloc_overflow
;
548 bfd_put_8 (abfd
, (bfd_vma
) value
, (unsigned char *) data
+ octets
);
551 case R_S_16C_14
: /* word1(4-5),word2(0-3,8-15). */
552 if (value
< 0 || value
> 16383)
553 return bfd_reloc_overflow
;
555 value
= ((value
& 0x000000c0) << 24) |
556 ((value
& 0x00003F00) << 16) |
557 ((value
& 0x0000000F) << 16) | (value
& 0x00000030);
559 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
562 case R_S_16C_16
: /* word2. */
563 if (value
> 65535 || value
< 0)
564 return bfd_reloc_overflow
;
567 bfd_put_16 (abfd
, (bfd_vma
) sword
,
568 (unsigned char *) data
+ octets
);
571 case R_S_16C_20
: /* word2(8-11),word3. */
572 /* if (value > 1048575 || value < 0) RELOC_ERROR(1); */
574 sword
= value
& 0x0000FFFF;
575 value
= (value
& 0x000F0000) >> 16;
577 bfd_put_8 (abfd
, (bfd_vma
) value
, (unsigned char *) data
+ octets
);
578 bfd_put_16 (abfd
, (bfd_vma
) sword
,
579 (unsigned char *) data
+ octets
+ 1);
582 /* Change load/stor negative displ opcode
583 to load/stor positive displ opcode. */
584 value
= bfd_get_8 (abfd
, (char *) data
+ octets
- 3);
587 bfd_put_8 (abfd
, (bfd_vma
) value
,
588 (unsigned char *) data
+ octets
- 3);
593 return bfd_reloc_notsupported
;
600 case R_S_16C_20
: /* word1(0-3),word2. */
601 if (value
> 1048575 || value
< 0)
602 return bfd_reloc_overflow
;
604 value
= ((value
& 0x0000FFFF) << 16) |
605 ((value
& 0x000F0000) >> 16);
607 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
610 case R_S_16C_24
: /* word2(0-3,8-11),word3. */
611 /* if (value > 16777215 || value < 0) RELOC_ERROR(1); */
613 value
= ((value
& 0x0000FFFF) << 16) |
614 ((value
& 0x000F0000) >> 8) | ((value
& 0x00F00000) >> 20);
616 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
620 return bfd_reloc_notsupported
;
627 case R_S_16C_04
: /* word1/2(4-7). */
628 if (value
> 15 || value
< -1)
629 return bfd_reloc_overflow
;
633 bfd_put_8 (abfd
, (bfd_vma
) value
, (unsigned char *) data
+ octets
);
636 case R_S_16C_16
: /* word2. */
637 if (value
> 32767 || value
< -32768)
638 return bfd_reloc_overflow
;
641 bfd_put_16 (abfd
, (bfd_vma
) sword
,
642 (unsigned char *) data
+ octets
);
645 case R_S_16C_20
: /* word1(0-3),word2. */
646 if (value
> 1048575 || value
< 0)
647 return bfd_reloc_overflow
;
649 value
= ((value
& 0x0000FFFF) << 16) |
650 ((value
& 0x000F0000) >> 16);
652 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
655 case R_S_16C_32
: /* word2, word3. */
657 value
= ((value
& 0x0000FFFF) << 16) |
658 ((value
& 0xFFFF0000) >> 16);
659 bfd_put_32 (abfd
, (bfd_vma
) value
, (bfd_byte
*) data
+ octets
);
663 return bfd_reloc_notsupported
;
667 return bfd_reloc_notsupported
;
673 /* Relocate a CR16C ELF section. */
676 elf32_cr16c_relocate_section (bfd
*output_bfd
,
677 struct bfd_link_info
*info
,
679 asection
*input_section
,
681 Elf_Internal_Rela
*relocs
,
682 Elf_Internal_Sym
*local_syms
,
683 asection
**local_sections
)
685 Elf_Internal_Shdr
*symtab_hdr
;
686 struct elf_link_hash_entry
**sym_hashes
;
687 Elf_Internal_Rela
*rel
, *relend
;
689 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
690 sym_hashes
= elf_sym_hashes (input_bfd
);
693 relend
= relocs
+ input_section
->reloc_count
;
694 for (; rel
< relend
; rel
++)
697 reloc_howto_type
*howto
;
698 unsigned long r_symndx
;
699 Elf_Internal_Sym
*sym
;
701 struct elf_link_hash_entry
*h
;
703 bfd_reloc_status_type r
;
705 r_symndx
= ELF32_R_SYM (rel
->r_info
);
706 r_type
= ELF32_R_TYPE (rel
->r_info
);
707 howto
= elf_howto_table
+ r_type
;
712 if (r_symndx
< symtab_hdr
->sh_info
)
714 sym
= local_syms
+ r_symndx
;
715 sec
= local_sections
[r_symndx
];
716 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
720 bfd_boolean unresolved_reloc
, warned
;
722 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
723 r_symndx
, symtab_hdr
, sym_hashes
,
725 unresolved_reloc
, warned
);
728 if (sec
!= NULL
&& elf_discarded_section (sec
))
730 /* For relocs against symbols from removed linkonce sections,
731 or sections discarded by a linker script, we just want the
732 section contents zeroed. Avoid any special processing. */
733 _bfd_clear_contents (howto
, input_bfd
, contents
+ rel
->r_offset
);
739 if (info
->relocatable
)
741 /* This is a relocatable link. We don't have to change
742 anything, unless the reloc is against a section symbol,
743 in which case we have to adjust according to where the
744 section symbol winds up in the output section. */
745 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
746 rel
->r_addend
+= sec
->output_offset
;
750 r
= cr16c_elf_final_link_relocate (howto
, input_bfd
, output_bfd
,
752 contents
, rel
->r_offset
,
753 relocation
, rel
->r_addend
,
754 info
, sec
, h
== NULL
);
756 if (r
!= bfd_reloc_ok
)
759 const char *msg
= (const char *) 0;
762 name
= h
->root
.root
.string
;
765 name
= (bfd_elf_string_from_elf_section
766 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
));
767 if (name
== NULL
|| *name
== '\0')
768 name
= bfd_section_name (input_bfd
, sec
);
773 case bfd_reloc_overflow
:
774 if (!((*info
->callbacks
->reloc_overflow
)
775 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
776 (bfd_vma
) 0, input_bfd
, input_section
,
781 case bfd_reloc_undefined
:
782 if (!((*info
->callbacks
->undefined_symbol
)
783 (info
, name
, input_bfd
, input_section
,
784 rel
->r_offset
, TRUE
)))
788 case bfd_reloc_outofrange
:
789 msg
= _("internal error: out of range error");
792 case bfd_reloc_notsupported
:
793 msg
= _("internal error: unsupported relocation error");
796 case bfd_reloc_dangerous
:
797 msg
= _("internal error: dangerous error");
801 msg
= _("internal error: unknown error");
805 if (!((*info
->callbacks
->warning
)
806 (info
, msg
, name
, input_bfd
, input_section
,
817 /* CR16C ELF uses three common sections:
818 One is for default common symbols (placed in usual common section).
819 Second is for near common symbols (placed in "ncommon" section).
820 Third is for far common symbols (placed in "fcommon" section).
821 The following implementation is based on elf32-mips architecture */
823 static asection cr16c_elf_fcom_section
;
824 static asymbol cr16c_elf_fcom_symbol
;
825 static asymbol
* cr16c_elf_fcom_symbol_ptr
;
826 static asection cr16c_elf_ncom_section
;
827 static asymbol cr16c_elf_ncom_symbol
;
828 static asymbol
* cr16c_elf_ncom_symbol_ptr
;
830 /* Given a BFD section, try to locate the
831 corresponding ELF section index. */
834 elf32_cr16c_section_from_bfd_section (bfd
*abfd ATTRIBUTE_UNUSED
,
838 if (strcmp (bfd_get_section_name (abfd
, sec
), ".fcommon") == 0)
839 *retval
= SHN_CR16C_FCOMMON
;
840 else if (strcmp (bfd_get_section_name (abfd
, sec
), ".ncommon") == 0)
841 *retval
= SHN_CR16C_NCOMMON
;
848 /* Handle the special CR16C section numbers that a symbol may use. */
851 elf32_cr16c_symbol_processing (bfd
*abfd ATTRIBUTE_UNUSED
,
854 elf_symbol_type
*elfsym
= (elf_symbol_type
*) asym
;
857 indx
= elfsym
->internal_elf_sym
.st_shndx
;
861 case SHN_CR16C_FCOMMON
:
862 if (cr16c_elf_fcom_section
.name
== NULL
)
864 /* Initialize the far common section. */
865 cr16c_elf_fcom_section
.name
= ".fcommon";
866 cr16c_elf_fcom_section
.flags
= SEC_IS_COMMON
| SEC_ALLOC
;
867 cr16c_elf_fcom_section
.output_section
= &cr16c_elf_fcom_section
;
868 cr16c_elf_fcom_section
.symbol
= &cr16c_elf_fcom_symbol
;
869 cr16c_elf_fcom_section
.symbol_ptr_ptr
= &cr16c_elf_fcom_symbol_ptr
;
870 cr16c_elf_fcom_symbol
.name
= ".fcommon";
871 cr16c_elf_fcom_symbol
.flags
= BSF_SECTION_SYM
;
872 cr16c_elf_fcom_symbol
.section
= &cr16c_elf_fcom_section
;
873 cr16c_elf_fcom_symbol_ptr
= &cr16c_elf_fcom_symbol
;
875 asym
->section
= &cr16c_elf_fcom_section
;
876 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
878 case SHN_CR16C_NCOMMON
:
879 if (cr16c_elf_ncom_section
.name
== NULL
)
881 /* Initialize the far common section. */
882 cr16c_elf_ncom_section
.name
= ".ncommon";
883 cr16c_elf_ncom_section
.flags
= SEC_IS_COMMON
| SEC_ALLOC
;
884 cr16c_elf_ncom_section
.output_section
= &cr16c_elf_ncom_section
;
885 cr16c_elf_ncom_section
.symbol
= &cr16c_elf_ncom_symbol
;
886 cr16c_elf_ncom_section
.symbol_ptr_ptr
= &cr16c_elf_ncom_symbol_ptr
;
887 cr16c_elf_ncom_symbol
.name
= ".ncommon";
888 cr16c_elf_ncom_symbol
.flags
= BSF_SECTION_SYM
;
889 cr16c_elf_ncom_symbol
.section
= &cr16c_elf_ncom_section
;
890 cr16c_elf_ncom_symbol_ptr
= &cr16c_elf_ncom_symbol
;
892 asym
->section
= &cr16c_elf_ncom_section
;
893 asym
->value
= elfsym
->internal_elf_sym
.st_size
;
898 /* Hook called by the linker routine which adds symbols from an object
899 file. We must handle the special cr16c section numbers here. */
902 elf32_cr16c_add_symbol_hook (bfd
*abfd
,
903 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
904 Elf_Internal_Sym
*sym
,
905 const char **namep ATTRIBUTE_UNUSED
,
906 flagword
*flagsp ATTRIBUTE_UNUSED
,
910 unsigned int indx
= sym
->st_shndx
;
914 case SHN_CR16C_FCOMMON
:
915 *secp
= bfd_make_section_old_way (abfd
, ".fcommon");
916 (*secp
)->flags
|= SEC_IS_COMMON
;
917 *valp
= sym
->st_size
;
919 case SHN_CR16C_NCOMMON
:
920 *secp
= bfd_make_section_old_way (abfd
, ".ncommon");
921 (*secp
)->flags
|= SEC_IS_COMMON
;
922 *valp
= sym
->st_size
;
930 elf32_cr16c_link_output_symbol_hook (struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
931 const char *name ATTRIBUTE_UNUSED
,
932 Elf_Internal_Sym
*sym
,
934 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
936 /* If we see a common symbol, which implies a relocatable link, then
937 if a symbol was in a special common section in an input file, mark
938 it as a special common in the output file. */
940 if (sym
->st_shndx
== SHN_COMMON
)
942 if (strcmp (input_sec
->name
, ".fcommon") == 0)
943 sym
->st_shndx
= SHN_CR16C_FCOMMON
;
944 else if (strcmp (input_sec
->name
, ".ncommon") == 0)
945 sym
->st_shndx
= SHN_CR16C_NCOMMON
;
951 /* Definitions for setting CR16C target vector. */
952 #define TARGET_LITTLE_SYM bfd_elf32_cr16c_vec
953 #define TARGET_LITTLE_NAME "elf32-cr16c"
954 #define ELF_ARCH bfd_arch_cr16c
955 #define ELF_MACHINE_CODE EM_CR
956 #define ELF_MAXPAGESIZE 0x1
957 #define elf_symbol_leading_char '_'
959 #define bfd_elf32_bfd_reloc_type_lookup elf_cr16c_reloc_type_lookup
960 #define bfd_elf32_bfd_reloc_name_lookup elf_cr16c_reloc_name_lookup
961 #define elf_info_to_howto elf_cr16c_info_to_howto
962 #define elf_info_to_howto_rel elf_cr16c_info_to_howto_rel
963 #define elf_backend_relocate_section elf32_cr16c_relocate_section
964 #define elf_backend_symbol_processing elf32_cr16c_symbol_processing
965 #define elf_backend_section_from_bfd_section elf32_cr16c_section_from_bfd_section
966 #define elf_backend_add_symbol_hook elf32_cr16c_add_symbol_hook
967 #define elf_backend_link_output_symbol_hook elf32_cr16c_link_output_symbol_hook
969 #define elf_backend_can_gc_sections 1
971 #include "elf32-target.h"