1 /* tc-sh.c -- Assemble code for the Renesas / SuperH SH
2    Copyright (C) 1993-2016 Free Software Foundation, Inc.
3 
4    This file is part of GAS, the GNU Assembler.
5 
6    GAS 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 3, or (at your option)
9    any later version.
10 
11    GAS 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.
15 
16    You should have received a copy of the GNU General Public License
17    along with GAS; see the file COPYING.  If not, write to
18    the Free Software Foundation, 51 Franklin Street - Fifth Floor,
19    Boston, MA 02110-1301, USA.  */
20 
21 /* Written By Steve Chamberlain <sac@cygnus.com>  */
22 
23 #include "as.h"
24 #include "subsegs.h"
25 #define DEFINE_TABLE
26 #include "opcodes/sh-opc.h"
27 #include "safe-ctype.h"
28 #include "struc-symbol.h"
29 
30 #ifdef OBJ_ELF
31 #include "elf/sh.h"
32 #endif
33 
34 #include "dwarf2dbg.h"
35 #include "dw2gencfi.h"
36 
37 typedef struct
38   {
39     sh_arg_type type;
40     int reg;
41     expressionS immediate;
42   }
43 sh_operand_info;
44 
45 const char comment_chars[] = "!";
46 const char line_separator_chars[] = ";";
47 const char line_comment_chars[] = "!#";
48 
49 static void s_uses (int);
50 static void s_uacons (int);
51 
52 #ifdef OBJ_ELF
53 static void sh_elf_cons (int);
54 
55 symbolS *GOT_symbol;		/* Pre-defined "_GLOBAL_OFFSET_TABLE_" */
56 #endif
57 
58 static void
big(int ignore ATTRIBUTE_UNUSED)59 big (int ignore ATTRIBUTE_UNUSED)
60 {
61   if (! target_big_endian)
62     as_bad (_("directive .big encountered when option -big required"));
63 
64   /* Stop further messages.  */
65   target_big_endian = 1;
66 }
67 
68 static void
little(int ignore ATTRIBUTE_UNUSED)69 little (int ignore ATTRIBUTE_UNUSED)
70 {
71   if (target_big_endian)
72     as_bad (_("directive .little encountered when option -little required"));
73 
74   /* Stop further messages.  */
75   target_big_endian = 0;
76 }
77 
78 /* This table describes all the machine specific pseudo-ops the assembler
79    has to support.  The fields are:
80    pseudo-op name without dot
81    function to call to execute this pseudo-op
82    Integer arg to pass to the function.  */
83 
84 const pseudo_typeS md_pseudo_table[] =
85 {
86 #ifdef OBJ_ELF
87   {"long", sh_elf_cons, 4},
88   {"int", sh_elf_cons, 4},
89   {"word", sh_elf_cons, 2},
90   {"short", sh_elf_cons, 2},
91 #else
92   {"int", cons, 4},
93   {"word", cons, 2},
94 #endif /* OBJ_ELF */
95   {"big", big, 0},
96   {"form", listing_psize, 0},
97   {"little", little, 0},
98   {"heading", listing_title, 0},
99   {"import", s_ignore, 0},
100   {"page", listing_eject, 0},
101   {"program", s_ignore, 0},
102   {"uses", s_uses, 0},
103   {"uaword", s_uacons, 2},
104   {"ualong", s_uacons, 4},
105   {"uaquad", s_uacons, 8},
106   {"2byte", s_uacons, 2},
107   {"4byte", s_uacons, 4},
108   {"8byte", s_uacons, 8},
109 #ifdef HAVE_SH64
110   {"mode", s_sh64_mode, 0 },
111 
112   /* Have the old name too.  */
113   {"isa", s_sh64_mode, 0 },
114 
115   /* Assert that the right ABI is used.  */
116   {"abi", s_sh64_abi, 0 },
117 
118   { "vtable_inherit", sh64_vtable_inherit, 0 },
119   { "vtable_entry", sh64_vtable_entry, 0 },
120 #endif /* HAVE_SH64 */
121   {0, 0, 0}
122 };
123 
124 int sh_relax;		/* set if -relax seen */
125 
126 /* Whether -small was seen.  */
127 
128 int sh_small;
129 
130 /* Flag to generate relocations against symbol values for local symbols.  */
131 
132 static int dont_adjust_reloc_32;
133 
134 /* Flag to indicate that '$' is allowed as a register prefix.  */
135 
136 static int allow_dollar_register_prefix;
137 
138 /* Preset architecture set, if given; zero otherwise.  */
139 
140 static unsigned int preset_target_arch;
141 
142 /* The bit mask of architectures that could
143    accommodate the insns seen so far.  */
144 static unsigned int valid_arch;
145 
146 #ifdef OBJ_ELF
147 /* Whether --fdpic was given.  */
148 static int sh_fdpic;
149 #endif
150 
151 const char EXP_CHARS[] = "eE";
152 
153 /* Chars that mean this number is a floating point constant.  */
154 /* As in 0f12.456 */
155 /* or    0d1.2345e12 */
156 const char FLT_CHARS[] = "rRsSfFdDxXpP";
157 
158 #define C(a,b) ENCODE_RELAX(a,b)
159 
160 #define ENCODE_RELAX(what,length) (((what) << 4) + (length))
161 #define GET_WHAT(x) ((x>>4))
162 
163 /* These are the three types of relaxable instruction.  */
164 /* These are the types of relaxable instructions; except for END which is
165    a marker.  */
166 #define COND_JUMP 1
167 #define COND_JUMP_DELAY 2
168 #define UNCOND_JUMP  3
169 
170 #ifdef HAVE_SH64
171 
172 /* A 16-bit (times four) pc-relative operand, at most expanded to 32 bits.  */
173 #define SH64PCREL16_32 4
174 /* A 16-bit (times four) pc-relative operand, at most expanded to 64 bits.  */
175 #define SH64PCREL16_64 5
176 
177 /* Variants of the above for adjusting the insn to PTA or PTB according to
178    the label.  */
179 #define SH64PCREL16PT_32 6
180 #define SH64PCREL16PT_64 7
181 
182 /* A MOVI expansion, expanding to at most 32 or 64 bits.  */
183 #define MOVI_IMM_32 8
184 #define MOVI_IMM_32_PCREL 9
185 #define MOVI_IMM_64 10
186 #define MOVI_IMM_64_PCREL 11
187 #define END 12
188 
189 #else  /* HAVE_SH64 */
190 
191 #define END 4
192 
193 #endif /* HAVE_SH64 */
194 
195 #define UNDEF_DISP 0
196 #define COND8  1
197 #define COND12 2
198 #define COND32 3
199 #define UNDEF_WORD_DISP 4
200 
201 #define UNCOND12 1
202 #define UNCOND32 2
203 
204 #ifdef HAVE_SH64
205 #define UNDEF_SH64PCREL 0
206 #define SH64PCREL16 1
207 #define SH64PCREL32 2
208 #define SH64PCREL48 3
209 #define SH64PCREL64 4
210 #define SH64PCRELPLT 5
211 
212 #define UNDEF_MOVI 0
213 #define MOVI_16 1
214 #define MOVI_32 2
215 #define MOVI_48 3
216 #define MOVI_64 4
217 #define MOVI_PLT 5
218 #define MOVI_GOTOFF 6
219 #define MOVI_GOTPC 7
220 #endif /* HAVE_SH64 */
221 
222 /* Branch displacements are from the address of the branch plus
223    four, thus all minimum and maximum values have 4 added to them.  */
224 #define COND8_F 258
225 #define COND8_M -252
226 #define COND8_LENGTH 2
227 
228 /* There is one extra instruction before the branch, so we must add
229    two more bytes to account for it.  */
230 #define COND12_F 4100
231 #define COND12_M -4090
232 #define COND12_LENGTH 6
233 
234 #define COND12_DELAY_LENGTH 4
235 
236 /* ??? The minimum and maximum values are wrong, but this does not matter
237    since this relocation type is not supported yet.  */
238 #define COND32_F (1<<30)
239 #define COND32_M -(1<<30)
240 #define COND32_LENGTH 14
241 
242 #define UNCOND12_F 4098
243 #define UNCOND12_M -4092
244 #define UNCOND12_LENGTH 2
245 
246 /* ??? The minimum and maximum values are wrong, but this does not matter
247    since this relocation type is not supported yet.  */
248 #define UNCOND32_F (1<<30)
249 #define UNCOND32_M -(1<<30)
250 #define UNCOND32_LENGTH 14
251 
252 #ifdef HAVE_SH64
253 /* The trivial expansion of a SH64PCREL16 relaxation is just a "PT label,
254    TRd" as is the current insn, so no extra length.  Note that the "reach"
255    is calculated from the address *after* that insn, but the offset in the
256    insn is calculated from the beginning of the insn.  We also need to
257    take into account the implicit 1 coded as the "A" in PTA when counting
258    forward.  If PTB reaches an odd address, we trap that as an error
259    elsewhere, so we don't have to have different relaxation entries.  We
260    don't add a one to the negative range, since PTB would then have the
261    farthest backward-reaching value skipped, not generated at relaxation.  */
262 #define SH64PCREL16_F (32767 * 4 - 4 + 1)
263 #define SH64PCREL16_M (-32768 * 4 - 4)
264 #define SH64PCREL16_LENGTH 0
265 
266 /* The next step is to change that PT insn into
267      MOVI ((label - datalabel Ln) >> 16) & 65535, R25
268      SHORI (label - datalabel Ln) & 65535, R25
269     Ln:
270      PTREL R25,TRd
271    which means two extra insns, 8 extra bytes.  This is the limit for the
272    32-bit ABI.
273 
274    The expressions look a bit bad since we have to adjust this to avoid overflow on a
275    32-bit host.  */
276 #define SH64PCREL32_F ((((long) 1 << 30) - 1) * 2 + 1 - 4)
277 #define SH64PCREL32_LENGTH (2 * 4)
278 
279 /* Similarly, we just change the MOVI and add a SHORI for the 48-bit
280    expansion.  */
281 #if BFD_HOST_64BIT_LONG
282 /* The "reach" type is long, so we can only do this for a 64-bit-long
283    host.  */
284 #define SH64PCREL32_M ((-((long) 1 << 30)) * 2 - 4)
285 #define SH64PCREL48_F ((((long) 1 << 47) - 1) - 4)
286 #define SH64PCREL48_M ((-((long) 1 << 47)) - 4)
287 #define SH64PCREL48_LENGTH (3 * 4)
288 #else
289 /* If the host does not have 64-bit longs, just make this state identical
290    in reach to the 32-bit state.  Note that we have a slightly incorrect
291    reach, but the correct one above will overflow a 32-bit number.  */
292 #define SH64PCREL32_M ((-((long) 1 << 30)) * 2)
293 #define SH64PCREL48_F SH64PCREL32_F
294 #define SH64PCREL48_M SH64PCREL32_M
295 #define SH64PCREL48_LENGTH (3 * 4)
296 #endif /* BFD_HOST_64BIT_LONG */
297 
298 /* And similarly for the 64-bit expansion; a MOVI + SHORI + SHORI + SHORI
299    + PTREL sequence.  */
300 #define SH64PCREL64_LENGTH (4 * 4)
301 
302 /* For MOVI, we make the MOVI + SHORI... expansion you can see in the
303    SH64PCREL expansions.  The PCREL one is similar, but the other has no
304    pc-relative reach; it must be fully expanded in
305    shmedia_md_estimate_size_before_relax.  */
306 #define MOVI_16_LENGTH 0
307 #define MOVI_16_F (32767 - 4)
308 #define MOVI_16_M (-32768 - 4)
309 #define MOVI_32_LENGTH 4
310 #define MOVI_32_F ((((long) 1 << 30) - 1) * 2 + 1 - 4)
311 #define MOVI_48_LENGTH 8
312 
313 #if BFD_HOST_64BIT_LONG
314 /* The "reach" type is long, so we can only do this for a 64-bit-long
315    host.  */
316 #define MOVI_32_M ((-((long) 1 << 30)) * 2 - 4)
317 #define MOVI_48_F ((((long) 1 << 47) - 1) - 4)
318 #define MOVI_48_M ((-((long) 1 << 47)) - 4)
319 #else
320 /* If the host does not have 64-bit longs, just make this state identical
321    in reach to the 32-bit state.  Note that we have a slightly incorrect
322    reach, but the correct one above will overflow a 32-bit number.  */
323 #define MOVI_32_M ((-((long) 1 << 30)) * 2)
324 #define MOVI_48_F MOVI_32_F
325 #define MOVI_48_M MOVI_32_M
326 #endif /* BFD_HOST_64BIT_LONG */
327 
328 #define MOVI_64_LENGTH 12
329 #endif /* HAVE_SH64 */
330 
331 #define EMPTY { 0, 0, 0, 0 }
332 
333 const relax_typeS md_relax_table[C (END, 0)] = {
334   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
335   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
336 
337   EMPTY,
338   /* C (COND_JUMP, COND8) */
339   { COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP, COND12) },
340   /* C (COND_JUMP, COND12) */
341   { COND12_F, COND12_M, COND12_LENGTH, C (COND_JUMP, COND32), },
342   /* C (COND_JUMP, COND32) */
343   { COND32_F, COND32_M, COND32_LENGTH, 0, },
344   /* C (COND_JUMP, UNDEF_WORD_DISP) */
345   { 0, 0, COND32_LENGTH, 0, },
346   EMPTY, EMPTY, EMPTY,
347   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
348 
349   EMPTY,
350   /* C (COND_JUMP_DELAY, COND8) */
351   { COND8_F, COND8_M, COND8_LENGTH, C (COND_JUMP_DELAY, COND12) },
352   /* C (COND_JUMP_DELAY, COND12) */
353   { COND12_F, COND12_M, COND12_DELAY_LENGTH, C (COND_JUMP_DELAY, COND32), },
354   /* C (COND_JUMP_DELAY, COND32) */
355   { COND32_F, COND32_M, COND32_LENGTH, 0, },
356   /* C (COND_JUMP_DELAY, UNDEF_WORD_DISP) */
357   { 0, 0, COND32_LENGTH, 0, },
358   EMPTY, EMPTY, EMPTY,
359   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
360 
361   EMPTY,
362   /* C (UNCOND_JUMP, UNCOND12) */
363   { UNCOND12_F, UNCOND12_M, UNCOND12_LENGTH, C (UNCOND_JUMP, UNCOND32), },
364   /* C (UNCOND_JUMP, UNCOND32) */
365   { UNCOND32_F, UNCOND32_M, UNCOND32_LENGTH, 0, },
366   EMPTY,
367   /* C (UNCOND_JUMP, UNDEF_WORD_DISP) */
368   { 0, 0, UNCOND32_LENGTH, 0, },
369   EMPTY, EMPTY, EMPTY,
370   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
371 
372 #ifdef HAVE_SH64
373   /* C (SH64PCREL16_32, SH64PCREL16) */
374   EMPTY,
375   { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16_32, SH64PCREL32) },
376   /* C (SH64PCREL16_32, SH64PCREL32) */
377   { 0, 0, SH64PCREL32_LENGTH, 0 },
378   EMPTY, EMPTY,
379   /* C (SH64PCREL16_32, SH64PCRELPLT) */
380   { 0, 0, SH64PCREL32_LENGTH, 0 },
381   EMPTY, EMPTY,
382   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
383 
384   /* C (SH64PCREL16_64, SH64PCREL16) */
385   EMPTY,
386   { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16_64, SH64PCREL32) },
387   /* C (SH64PCREL16_64, SH64PCREL32) */
388   { SH64PCREL32_F, SH64PCREL32_M, SH64PCREL32_LENGTH, C (SH64PCREL16_64, SH64PCREL48) },
389   /* C (SH64PCREL16_64, SH64PCREL48) */
390   { SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, C (SH64PCREL16_64, SH64PCREL64) },
391   /* C (SH64PCREL16_64, SH64PCREL64) */
392   { 0, 0, SH64PCREL64_LENGTH, 0 },
393   /* C (SH64PCREL16_64, SH64PCRELPLT) */
394   { 0, 0, SH64PCREL64_LENGTH, 0 },
395   EMPTY, EMPTY,
396   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
397 
398   /* C (SH64PCREL16PT_32, SH64PCREL16) */
399   EMPTY,
400   { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16PT_32, SH64PCREL32) },
401   /* C (SH64PCREL16PT_32, SH64PCREL32) */
402   { 0, 0, SH64PCREL32_LENGTH, 0 },
403   EMPTY, EMPTY,
404   /* C (SH64PCREL16PT_32, SH64PCRELPLT) */
405   { 0, 0, SH64PCREL32_LENGTH, 0 },
406   EMPTY, EMPTY,
407   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
408 
409   /* C (SH64PCREL16PT_64, SH64PCREL16) */
410   EMPTY,
411   { SH64PCREL16_F, SH64PCREL16_M, SH64PCREL16_LENGTH, C (SH64PCREL16PT_64, SH64PCREL32) },
412   /* C (SH64PCREL16PT_64, SH64PCREL32) */
413   { SH64PCREL32_F,
414     SH64PCREL32_M,
415     SH64PCREL32_LENGTH,
416     C (SH64PCREL16PT_64, SH64PCREL48) },
417   /* C (SH64PCREL16PT_64, SH64PCREL48) */
418   { SH64PCREL48_F, SH64PCREL48_M, SH64PCREL48_LENGTH, C (SH64PCREL16PT_64, SH64PCREL64) },
419   /* C (SH64PCREL16PT_64, SH64PCREL64) */
420   { 0, 0, SH64PCREL64_LENGTH, 0 },
421   /* C (SH64PCREL16PT_64, SH64PCRELPLT) */
422   { 0, 0, SH64PCREL64_LENGTH, 0},
423   EMPTY, EMPTY,
424   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
425 
426   /* C (MOVI_IMM_32, UNDEF_MOVI) */
427   { 0, 0, MOVI_32_LENGTH, 0 },
428   /* C (MOVI_IMM_32, MOVI_16) */
429   { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_32, MOVI_32) },
430   /* C (MOVI_IMM_32, MOVI_32) */
431   { MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, 0 },
432   EMPTY, EMPTY, EMPTY,
433   /* C (MOVI_IMM_32, MOVI_GOTOFF) */
434   { 0, 0, MOVI_32_LENGTH, 0 },
435   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
436 
437   /* C (MOVI_IMM_32_PCREL, MOVI_16) */
438   EMPTY,
439   { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_32_PCREL, MOVI_32) },
440   /* C (MOVI_IMM_32_PCREL, MOVI_32) */
441   { 0, 0, MOVI_32_LENGTH, 0 },
442   EMPTY, EMPTY,
443   /* C (MOVI_IMM_32_PCREL, MOVI_PLT) */
444   { 0, 0, MOVI_32_LENGTH, 0 },
445   EMPTY,
446   /* C (MOVI_IMM_32_PCREL, MOVI_GOTPC) */
447   { 0, 0, MOVI_32_LENGTH, 0 },
448   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
449 
450   /* C (MOVI_IMM_64, UNDEF_MOVI) */
451   { 0, 0, MOVI_64_LENGTH, 0 },
452   /* C (MOVI_IMM_64, MOVI_16) */
453   { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_64, MOVI_32) },
454   /* C (MOVI_IMM_64, MOVI_32) */
455   { MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, C (MOVI_IMM_64, MOVI_48) },
456   /* C (MOVI_IMM_64, MOVI_48) */
457   { MOVI_48_F, MOVI_48_M, MOVI_48_LENGTH, C (MOVI_IMM_64, MOVI_64) },
458   /* C (MOVI_IMM_64, MOVI_64) */
459   { 0, 0, MOVI_64_LENGTH, 0 },
460   EMPTY,
461   /* C (MOVI_IMM_64, MOVI_GOTOFF) */
462   { 0, 0, MOVI_64_LENGTH, 0 },
463   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
464 
465   /* C (MOVI_IMM_64_PCREL, MOVI_16) */
466   EMPTY,
467   { MOVI_16_F, MOVI_16_M, MOVI_16_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_32) },
468   /* C (MOVI_IMM_64_PCREL, MOVI_32) */
469   { MOVI_32_F, MOVI_32_M, MOVI_32_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_48) },
470   /* C (MOVI_IMM_64_PCREL, MOVI_48) */
471   { MOVI_48_F, MOVI_48_M, MOVI_48_LENGTH, C (MOVI_IMM_64_PCREL, MOVI_64) },
472   /* C (MOVI_IMM_64_PCREL, MOVI_64) */
473   { 0, 0, MOVI_64_LENGTH, 0 },
474   /* C (MOVI_IMM_64_PCREL, MOVI_PLT) */
475   { 0, 0, MOVI_64_LENGTH, 0 },
476   EMPTY,
477   /* C (MOVI_IMM_64_PCREL, MOVI_GOTPC) */
478   { 0, 0, MOVI_64_LENGTH, 0 },
479   EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY, EMPTY,
480 
481 #endif /* HAVE_SH64 */
482 
483 };
484 
485 #undef EMPTY
486 
487 static struct hash_control *opcode_hash_control;	/* Opcode mnemonics */
488 
489 
490 #ifdef OBJ_ELF
491 /* Determinet whether the symbol needs any kind of PIC relocation.  */
492 
493 inline static int
sh_PIC_related_p(symbolS * sym)494 sh_PIC_related_p (symbolS *sym)
495 {
496   expressionS *exp;
497 
498   if (! sym)
499     return 0;
500 
501   if (sym == GOT_symbol)
502     return 1;
503 
504 #ifdef HAVE_SH64
505   if (sh_PIC_related_p (*symbol_get_tc (sym)))
506     return 1;
507 #endif
508 
509   exp = symbol_get_value_expression (sym);
510 
511   return (exp->X_op == O_PIC_reloc
512 	  || sh_PIC_related_p (exp->X_add_symbol)
513 	  || sh_PIC_related_p (exp->X_op_symbol));
514 }
515 
516 /* Determine the relocation type to be used to represent the
517    expression, that may be rearranged.  */
518 
519 static int
sh_check_fixup(expressionS * main_exp,bfd_reloc_code_real_type * r_type_p)520 sh_check_fixup (expressionS *main_exp, bfd_reloc_code_real_type *r_type_p)
521 {
522   expressionS *exp = main_exp;
523 
524   /* This is here for backward-compatibility only.  GCC used to generated:
525 
526 	f@PLT + . - (.LPCS# + 2)
527 
528      but we'd rather be able to handle this as a PIC-related reference
529      plus/minus a symbol.  However, gas' parser gives us:
530 
531 	O_subtract (O_add (f@PLT, .), .LPCS#+2)
532 
533      so we attempt to transform this into:
534 
535         O_subtract (f@PLT, O_subtract (.LPCS#+2, .))
536 
537      which we can handle simply below.  */
538   if (exp->X_op == O_subtract)
539     {
540       if (sh_PIC_related_p (exp->X_op_symbol))
541 	return 1;
542 
543       exp = symbol_get_value_expression (exp->X_add_symbol);
544 
545       if (exp && sh_PIC_related_p (exp->X_op_symbol))
546 	return 1;
547 
548       if (exp && exp->X_op == O_add
549 	  && sh_PIC_related_p (exp->X_add_symbol))
550 	{
551 	  symbolS *sym = exp->X_add_symbol;
552 
553 	  exp->X_op = O_subtract;
554 	  exp->X_add_symbol = main_exp->X_op_symbol;
555 
556 	  main_exp->X_op_symbol = main_exp->X_add_symbol;
557 	  main_exp->X_add_symbol = sym;
558 
559 	  main_exp->X_add_number += exp->X_add_number;
560 	  exp->X_add_number = 0;
561 	}
562 
563       exp = main_exp;
564     }
565   else if (exp->X_op == O_add && sh_PIC_related_p (exp->X_op_symbol))
566     return 1;
567 
568   if (exp->X_op == O_symbol || exp->X_op == O_add || exp->X_op == O_subtract)
569     {
570 #ifdef HAVE_SH64
571       if (exp->X_add_symbol
572 	  && (exp->X_add_symbol == GOT_symbol
573 	      || (GOT_symbol
574 		  && *symbol_get_tc (exp->X_add_symbol) == GOT_symbol)))
575 	{
576 	  switch (*r_type_p)
577 	    {
578 	    case BFD_RELOC_SH_IMM_LOW16:
579 	      *r_type_p = BFD_RELOC_SH_GOTPC_LOW16;
580 	      break;
581 
582 	    case BFD_RELOC_SH_IMM_MEDLOW16:
583 	      *r_type_p = BFD_RELOC_SH_GOTPC_MEDLOW16;
584 	      break;
585 
586 	    case BFD_RELOC_SH_IMM_MEDHI16:
587 	      *r_type_p = BFD_RELOC_SH_GOTPC_MEDHI16;
588 	      break;
589 
590 	    case BFD_RELOC_SH_IMM_HI16:
591 	      *r_type_p = BFD_RELOC_SH_GOTPC_HI16;
592 	      break;
593 
594 	    case BFD_RELOC_NONE:
595 	    case BFD_RELOC_UNUSED:
596 	      *r_type_p = BFD_RELOC_SH_GOTPC;
597 	      break;
598 
599 	    default:
600 	      abort ();
601 	    }
602 	  return 0;
603 	}
604 #else
605       if (exp->X_add_symbol && exp->X_add_symbol == GOT_symbol)
606 	{
607 	  *r_type_p = BFD_RELOC_SH_GOTPC;
608 	  return 0;
609 	}
610 #endif
611       exp = symbol_get_value_expression (exp->X_add_symbol);
612       if (! exp)
613 	return 0;
614     }
615 
616   if (exp->X_op == O_PIC_reloc)
617     {
618       switch (*r_type_p)
619 	{
620 	case BFD_RELOC_NONE:
621 	case BFD_RELOC_UNUSED:
622 	  *r_type_p = exp->X_md;
623 	  break;
624 
625 	case BFD_RELOC_SH_DISP20:
626 	  switch (exp->X_md)
627 	    {
628 	    case BFD_RELOC_32_GOT_PCREL:
629 	      *r_type_p = BFD_RELOC_SH_GOT20;
630 	      break;
631 
632 	    case BFD_RELOC_32_GOTOFF:
633 	      *r_type_p = BFD_RELOC_SH_GOTOFF20;
634 	      break;
635 
636 	    case BFD_RELOC_SH_GOTFUNCDESC:
637 	      *r_type_p = BFD_RELOC_SH_GOTFUNCDESC20;
638 	      break;
639 
640 	    case BFD_RELOC_SH_GOTOFFFUNCDESC:
641 	      *r_type_p = BFD_RELOC_SH_GOTOFFFUNCDESC20;
642 	      break;
643 
644 	    default:
645 	      abort ();
646 	    }
647 	  break;
648 
649 #ifdef HAVE_SH64
650 	case BFD_RELOC_SH_IMM_LOW16:
651 	  switch (exp->X_md)
652 	    {
653 	    case BFD_RELOC_32_GOTOFF:
654 	      *r_type_p = BFD_RELOC_SH_GOTOFF_LOW16;
655 	      break;
656 
657 	    case BFD_RELOC_SH_GOTPLT32:
658 	      *r_type_p = BFD_RELOC_SH_GOTPLT_LOW16;
659 	      break;
660 
661 	    case BFD_RELOC_32_GOT_PCREL:
662 	      *r_type_p = BFD_RELOC_SH_GOT_LOW16;
663 	      break;
664 
665 	    case BFD_RELOC_32_PLT_PCREL:
666 	      *r_type_p = BFD_RELOC_SH_PLT_LOW16;
667 	      break;
668 
669 	    default:
670 	      abort ();
671 	    }
672 	  break;
673 
674 	case BFD_RELOC_SH_IMM_MEDLOW16:
675 	  switch (exp->X_md)
676 	    {
677 	    case BFD_RELOC_32_GOTOFF:
678 	      *r_type_p = BFD_RELOC_SH_GOTOFF_MEDLOW16;
679 	      break;
680 
681 	    case BFD_RELOC_SH_GOTPLT32:
682 	      *r_type_p = BFD_RELOC_SH_GOTPLT_MEDLOW16;
683 	      break;
684 
685 	    case BFD_RELOC_32_GOT_PCREL:
686 	      *r_type_p = BFD_RELOC_SH_GOT_MEDLOW16;
687 	      break;
688 
689 	    case BFD_RELOC_32_PLT_PCREL:
690 	      *r_type_p = BFD_RELOC_SH_PLT_MEDLOW16;
691 	      break;
692 
693 	    default:
694 	      abort ();
695 	    }
696 	  break;
697 
698 	case BFD_RELOC_SH_IMM_MEDHI16:
699 	  switch (exp->X_md)
700 	    {
701 	    case BFD_RELOC_32_GOTOFF:
702 	      *r_type_p = BFD_RELOC_SH_GOTOFF_MEDHI16;
703 	      break;
704 
705 	    case BFD_RELOC_SH_GOTPLT32:
706 	      *r_type_p = BFD_RELOC_SH_GOTPLT_MEDHI16;
707 	      break;
708 
709 	    case BFD_RELOC_32_GOT_PCREL:
710 	      *r_type_p = BFD_RELOC_SH_GOT_MEDHI16;
711 	      break;
712 
713 	    case BFD_RELOC_32_PLT_PCREL:
714 	      *r_type_p = BFD_RELOC_SH_PLT_MEDHI16;
715 	      break;
716 
717 	    default:
718 	      abort ();
719 	    }
720 	  break;
721 
722 	case BFD_RELOC_SH_IMM_HI16:
723 	  switch (exp->X_md)
724 	    {
725 	    case BFD_RELOC_32_GOTOFF:
726 	      *r_type_p = BFD_RELOC_SH_GOTOFF_HI16;
727 	      break;
728 
729 	    case BFD_RELOC_SH_GOTPLT32:
730 	      *r_type_p = BFD_RELOC_SH_GOTPLT_HI16;
731 	      break;
732 
733 	    case BFD_RELOC_32_GOT_PCREL:
734 	      *r_type_p = BFD_RELOC_SH_GOT_HI16;
735 	      break;
736 
737 	    case BFD_RELOC_32_PLT_PCREL:
738 	      *r_type_p = BFD_RELOC_SH_PLT_HI16;
739 	      break;
740 
741 	    default:
742 	      abort ();
743 	    }
744 	  break;
745 #endif
746 
747 	default:
748 	  abort ();
749 	}
750       if (exp == main_exp)
751 	exp->X_op = O_symbol;
752       else
753 	{
754 	  main_exp->X_add_symbol = exp->X_add_symbol;
755 	  main_exp->X_add_number += exp->X_add_number;
756 	}
757     }
758   else
759     return (sh_PIC_related_p (exp->X_add_symbol)
760 	    || sh_PIC_related_p (exp->X_op_symbol));
761 
762   return 0;
763 }
764 
765 /* Add expression EXP of SIZE bytes to offset OFF of fragment FRAG.  */
766 
767 void
sh_cons_fix_new(fragS * frag,int off,int size,expressionS * exp,bfd_reloc_code_real_type r_type)768 sh_cons_fix_new (fragS *frag, int off, int size, expressionS *exp,
769 		 bfd_reloc_code_real_type r_type)
770 {
771   r_type = BFD_RELOC_UNUSED;
772 
773   if (sh_check_fixup (exp, &r_type))
774     as_bad (_("Invalid PIC expression."));
775 
776   if (r_type == BFD_RELOC_UNUSED)
777     switch (size)
778       {
779       case 1:
780 	r_type = BFD_RELOC_8;
781 	break;
782 
783       case 2:
784 	r_type = BFD_RELOC_16;
785 	break;
786 
787       case 4:
788 	r_type = BFD_RELOC_32;
789 	break;
790 
791       case 8:
792 	r_type = BFD_RELOC_64;
793 	break;
794 
795       default:
796 	goto error;
797       }
798   else if (size != 4)
799     {
800     error:
801       as_bad (_("unsupported BFD relocation size %u"), size);
802       r_type = BFD_RELOC_UNUSED;
803     }
804 
805   fix_new_exp (frag, off, size, exp, 0, r_type);
806 }
807 
808 /* The regular cons() function, that reads constants, doesn't support
809    suffixes such as @GOT, @GOTOFF and @PLT, that generate
810    machine-specific relocation types.  So we must define it here.  */
811 /* Clobbers input_line_pointer, checks end-of-line.  */
812 /* NBYTES 1=.byte, 2=.word, 4=.long */
813 static void
sh_elf_cons(int nbytes)814 sh_elf_cons (int nbytes)
815 {
816   expressionS exp;
817 
818 #ifdef HAVE_SH64
819 
820   /* Update existing range to include a previous insn, if there was one.  */
821   sh64_update_contents_mark (TRUE);
822 
823   /* We need to make sure the contents type is set to data.  */
824   sh64_flag_output ();
825 
826 #endif /* HAVE_SH64 */
827 
828   if (is_it_end_of_statement ())
829     {
830       demand_empty_rest_of_line ();
831       return;
832     }
833 
834 #ifdef md_cons_align
835   md_cons_align (nbytes);
836 #endif
837 
838   do
839     {
840       expression (&exp);
841       emit_expr (&exp, (unsigned int) nbytes);
842     }
843   while (*input_line_pointer++ == ',');
844 
845   input_line_pointer--;		/* Put terminator back into stream.  */
846   if (*input_line_pointer == '#' || *input_line_pointer == '!')
847     {
848        while (! is_end_of_line[(unsigned char) *input_line_pointer++]);
849     }
850   else
851     demand_empty_rest_of_line ();
852 }
853 
854 /* The regular frag_offset_fixed_p doesn't work for rs_align_test
855    frags.  */
856 
857 static bfd_boolean
align_test_frag_offset_fixed_p(const fragS * frag1,const fragS * frag2,bfd_vma * offset)858 align_test_frag_offset_fixed_p (const fragS *frag1, const fragS *frag2,
859 				bfd_vma *offset)
860 {
861   const fragS *frag;
862   bfd_vma off;
863 
864   /* Start with offset initialised to difference between the two frags.
865      Prior to assigning frag addresses this will be zero.  */
866   off = frag1->fr_address - frag2->fr_address;
867   if (frag1 == frag2)
868     {
869       *offset = off;
870       return TRUE;
871     }
872 
873   /* Maybe frag2 is after frag1.  */
874   frag = frag1;
875   while (frag->fr_type == rs_fill
876 	 || frag->fr_type == rs_align_test)
877     {
878       if (frag->fr_type == rs_fill)
879 	off += frag->fr_fix + frag->fr_offset * frag->fr_var;
880       else
881 	off += frag->fr_fix;
882       frag = frag->fr_next;
883       if (frag == NULL)
884 	break;
885       if (frag == frag2)
886 	{
887 	  *offset = off;
888 	  return TRUE;
889 	}
890     }
891 
892   /* Maybe frag1 is after frag2.  */
893   off = frag1->fr_address - frag2->fr_address;
894   frag = frag2;
895   while (frag->fr_type == rs_fill
896 	 || frag->fr_type == rs_align_test)
897     {
898       if (frag->fr_type == rs_fill)
899 	off -= frag->fr_fix + frag->fr_offset * frag->fr_var;
900       else
901 	off -= frag->fr_fix;
902       frag = frag->fr_next;
903       if (frag == NULL)
904 	break;
905       if (frag == frag1)
906 	{
907 	  *offset = off;
908 	  return TRUE;
909 	}
910     }
911 
912   return FALSE;
913 }
914 
915 /* Optimize a difference of symbols which have rs_align_test frag if
916    possible.  */
917 
918 int
sh_optimize_expr(expressionS * l,operatorT op,expressionS * r)919 sh_optimize_expr (expressionS *l, operatorT op, expressionS *r)
920 {
921   bfd_vma frag_off;
922 
923   if (op == O_subtract
924       && l->X_op == O_symbol
925       && r->X_op == O_symbol
926       && S_GET_SEGMENT (l->X_add_symbol) == S_GET_SEGMENT (r->X_add_symbol)
927       && (SEG_NORMAL (S_GET_SEGMENT (l->X_add_symbol))
928 	  || r->X_add_symbol == l->X_add_symbol)
929       && align_test_frag_offset_fixed_p (symbol_get_frag (l->X_add_symbol),
930 					 symbol_get_frag (r->X_add_symbol),
931 					 &frag_off))
932     {
933       offsetT symval_diff = S_GET_VALUE (l->X_add_symbol)
934 			    - S_GET_VALUE (r->X_add_symbol);
935       subtract_from_result (l, r->X_add_number, r->X_extrabit);
936       subtract_from_result (l, frag_off / OCTETS_PER_BYTE, 0);
937       add_to_result (l, symval_diff, symval_diff < 0);
938       l->X_op = O_constant;
939       l->X_add_symbol = 0;
940       return 1;
941     }
942   return 0;
943 }
944 #endif /* OBJ_ELF */
945 
946 /* This function is called once, at assembler startup time.  This should
947    set up all the tables, etc that the MD part of the assembler needs.  */
948 
949 void
md_begin(void)950 md_begin (void)
951 {
952   const sh_opcode_info *opcode;
953   const char *prev_name = "";
954   unsigned int target_arch;
955 
956   target_arch
957     = preset_target_arch ? preset_target_arch : arch_sh_up & ~arch_sh_has_dsp;
958   valid_arch = target_arch;
959 
960 #ifdef HAVE_SH64
961   shmedia_md_begin ();
962 #endif
963 
964   opcode_hash_control = hash_new ();
965 
966   /* Insert unique names into hash table.  */
967   for (opcode = sh_table; opcode->name; opcode++)
968     {
969       if (strcmp (prev_name, opcode->name) != 0)
970 	{
971 	  if (!SH_MERGE_ARCH_SET_VALID (opcode->arch, target_arch))
972 	    continue;
973 	  prev_name = opcode->name;
974 	  hash_insert (opcode_hash_control, opcode->name, (char *) opcode);
975 	}
976     }
977 }
978 
979 static int reg_m;
980 static int reg_n;
981 static int reg_x, reg_y;
982 static int reg_efg;
983 static int reg_b;
984 
985 #define IDENT_CHAR(c) (ISALNUM (c) || (c) == '_')
986 
987 /* Try to parse a reg name.  Return the number of chars consumed.  */
988 
989 static unsigned int
parse_reg_without_prefix(char * src,sh_arg_type * mode,int * reg)990 parse_reg_without_prefix (char *src, sh_arg_type *mode, int *reg)
991 {
992   char l0 = TOLOWER (src[0]);
993   char l1 = l0 ? TOLOWER (src[1]) : 0;
994 
995   /* We use ! IDENT_CHAR for the next character after the register name, to
996      make sure that we won't accidentally recognize a symbol name such as
997      'sram' or sr_ram as being a reference to the register 'sr'.  */
998 
999   if (l0 == 'r')
1000     {
1001       if (l1 == '1')
1002 	{
1003 	  if (src[2] >= '0' && src[2] <= '5'
1004 	      && ! IDENT_CHAR ((unsigned char) src[3]))
1005 	    {
1006 	      *mode = A_REG_N;
1007 	      *reg = 10 + src[2] - '0';
1008 	      return 3;
1009 	    }
1010 	}
1011       if (l1 >= '0' && l1 <= '9'
1012 	  && ! IDENT_CHAR ((unsigned char) src[2]))
1013 	{
1014 	  *mode = A_REG_N;
1015 	  *reg = (l1 - '0');
1016 	  return 2;
1017 	}
1018       if (l1 >= '0' && l1 <= '7' && strncasecmp (&src[2], "_bank", 5) == 0
1019 	  && ! IDENT_CHAR ((unsigned char) src[7]))
1020 	{
1021 	  *mode = A_REG_B;
1022 	  *reg  = (l1 - '0');
1023 	  return 7;
1024 	}
1025 
1026       if (l1 == 'e' && ! IDENT_CHAR ((unsigned char) src[2]))
1027 	{
1028 	  *mode = A_RE;
1029 	  return 2;
1030 	}
1031       if (l1 == 's' && ! IDENT_CHAR ((unsigned char) src[2]))
1032 	{
1033 	  *mode = A_RS;
1034 	  return 2;
1035 	}
1036     }
1037 
1038   if (l0 == 'a')
1039     {
1040       if (l1 == '0')
1041 	{
1042 	  if (! IDENT_CHAR ((unsigned char) src[2]))
1043 	    {
1044 	      *mode = DSP_REG_N;
1045 	      *reg = A_A0_NUM;
1046 	      return 2;
1047 	    }
1048 	  if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3]))
1049 	    {
1050 	      *mode = DSP_REG_N;
1051 	      *reg = A_A0G_NUM;
1052 	      return 3;
1053 	    }
1054 	}
1055       if (l1 == '1')
1056 	{
1057 	  if (! IDENT_CHAR ((unsigned char) src[2]))
1058 	    {
1059 	      *mode = DSP_REG_N;
1060 	      *reg = A_A1_NUM;
1061 	      return 2;
1062 	    }
1063 	  if (TOLOWER (src[2]) == 'g' && ! IDENT_CHAR ((unsigned char) src[3]))
1064 	    {
1065 	      *mode = DSP_REG_N;
1066 	      *reg = A_A1G_NUM;
1067 	      return 3;
1068 	    }
1069 	}
1070 
1071       if (l1 == 'x' && src[2] >= '0' && src[2] <= '1'
1072 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1073 	{
1074 	  *mode = A_REG_N;
1075 	  *reg = 4 + (l1 - '0');
1076 	  return 3;
1077 	}
1078       if (l1 == 'y' && src[2] >= '0' && src[2] <= '1'
1079 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1080 	{
1081 	  *mode = A_REG_N;
1082 	  *reg = 6 + (l1 - '0');
1083 	  return 3;
1084 	}
1085       if (l1 == 's' && src[2] >= '0' && src[2] <= '3'
1086 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1087 	{
1088 	  int n = l1 - '0';
1089 
1090 	  *mode = A_REG_N;
1091 	  *reg = n | ((~n & 2) << 1);
1092 	  return 3;
1093 	}
1094     }
1095 
1096   if (l0 == 'i' && l1 && ! IDENT_CHAR ((unsigned char) src[2]))
1097     {
1098       if (l1 == 's')
1099 	{
1100 	  *mode = A_REG_N;
1101 	  *reg = 8;
1102 	  return 2;
1103 	}
1104       if (l1 == 'x')
1105 	{
1106 	  *mode = A_REG_N;
1107 	  *reg = 8;
1108 	  return 2;
1109 	}
1110       if (l1 == 'y')
1111 	{
1112 	  *mode = A_REG_N;
1113 	  *reg = 9;
1114 	  return 2;
1115 	}
1116     }
1117 
1118   if (l0 == 'x' && l1 >= '0' && l1 <= '1'
1119       && ! IDENT_CHAR ((unsigned char) src[2]))
1120     {
1121       *mode = DSP_REG_N;
1122       *reg = A_X0_NUM + l1 - '0';
1123       return 2;
1124     }
1125 
1126   if (l0 == 'y' && l1 >= '0' && l1 <= '1'
1127       && ! IDENT_CHAR ((unsigned char) src[2]))
1128     {
1129       *mode = DSP_REG_N;
1130       *reg = A_Y0_NUM + l1 - '0';
1131       return 2;
1132     }
1133 
1134   if (l0 == 'm' && l1 >= '0' && l1 <= '1'
1135       && ! IDENT_CHAR ((unsigned char) src[2]))
1136     {
1137       *mode = DSP_REG_N;
1138       *reg = l1 == '0' ? A_M0_NUM : A_M1_NUM;
1139       return 2;
1140     }
1141 
1142   if (l0 == 's'
1143       && l1 == 's'
1144       && TOLOWER (src[2]) == 'r' && ! IDENT_CHAR ((unsigned char) src[3]))
1145     {
1146       *mode = A_SSR;
1147       return 3;
1148     }
1149 
1150   if (l0 == 's' && l1 == 'p' && TOLOWER (src[2]) == 'c'
1151       && ! IDENT_CHAR ((unsigned char) src[3]))
1152     {
1153       *mode = A_SPC;
1154       return 3;
1155     }
1156 
1157   if (l0 == 's' && l1 == 'g' && TOLOWER (src[2]) == 'r'
1158       && ! IDENT_CHAR ((unsigned char) src[3]))
1159     {
1160       *mode = A_SGR;
1161       return 3;
1162     }
1163 
1164   if (l0 == 'd' && l1 == 's' && TOLOWER (src[2]) == 'r'
1165       && ! IDENT_CHAR ((unsigned char) src[3]))
1166     {
1167       *mode = A_DSR;
1168       return 3;
1169     }
1170 
1171   if (l0 == 'd' && l1 == 'b' && TOLOWER (src[2]) == 'r'
1172       && ! IDENT_CHAR ((unsigned char) src[3]))
1173     {
1174       *mode = A_DBR;
1175       return 3;
1176     }
1177 
1178   if (l0 == 's' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2]))
1179     {
1180       *mode = A_SR;
1181       return 2;
1182     }
1183 
1184   if (l0 == 's' && l1 == 'p' && ! IDENT_CHAR ((unsigned char) src[2]))
1185     {
1186       *mode = A_REG_N;
1187       *reg = 15;
1188       return 2;
1189     }
1190 
1191   if (l0 == 'p' && l1 == 'r' && ! IDENT_CHAR ((unsigned char) src[2]))
1192     {
1193       *mode = A_PR;
1194       return 2;
1195     }
1196   if (l0 == 'p' && l1 == 'c' && ! IDENT_CHAR ((unsigned char) src[2]))
1197     {
1198       /* Don't use A_DISP_PC here - that would accept stuff like 'mova pc,r0'
1199          and use an uninitialized immediate.  */
1200       *mode = A_PC;
1201       return 2;
1202     }
1203   if (l0 == 'g' && l1 == 'b' && TOLOWER (src[2]) == 'r'
1204       && ! IDENT_CHAR ((unsigned char) src[3]))
1205     {
1206       *mode = A_GBR;
1207       return 3;
1208     }
1209   if (l0 == 'v' && l1 == 'b' && TOLOWER (src[2]) == 'r'
1210       && ! IDENT_CHAR ((unsigned char) src[3]))
1211     {
1212       *mode = A_VBR;
1213       return 3;
1214     }
1215 
1216   if (l0 == 't' && l1 == 'b' && TOLOWER (src[2]) == 'r'
1217       && ! IDENT_CHAR ((unsigned char) src[3]))
1218     {
1219       *mode = A_TBR;
1220       return 3;
1221     }
1222   if (l0 == 'm' && l1 == 'a' && TOLOWER (src[2]) == 'c'
1223       && ! IDENT_CHAR ((unsigned char) src[4]))
1224     {
1225       if (TOLOWER (src[3]) == 'l')
1226 	{
1227 	  *mode = A_MACL;
1228 	  return 4;
1229 	}
1230       if (TOLOWER (src[3]) == 'h')
1231 	{
1232 	  *mode = A_MACH;
1233 	  return 4;
1234 	}
1235     }
1236   if (l0 == 'm' && l1 == 'o' && TOLOWER (src[2]) == 'd'
1237       && ! IDENT_CHAR ((unsigned char) src[3]))
1238     {
1239       *mode = A_MOD;
1240       return 3;
1241     }
1242   if (l0 == 'f' && l1 == 'r')
1243     {
1244       if (src[2] == '1')
1245 	{
1246 	  if (src[3] >= '0' && src[3] <= '5'
1247 	      && ! IDENT_CHAR ((unsigned char) src[4]))
1248 	    {
1249 	      *mode = F_REG_N;
1250 	      *reg = 10 + src[3] - '0';
1251 	      return 4;
1252 	    }
1253 	}
1254       if (src[2] >= '0' && src[2] <= '9'
1255 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1256 	{
1257 	  *mode = F_REG_N;
1258 	  *reg = (src[2] - '0');
1259 	  return 3;
1260 	}
1261     }
1262   if (l0 == 'd' && l1 == 'r')
1263     {
1264       if (src[2] == '1')
1265 	{
1266 	  if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1)
1267 	      && ! IDENT_CHAR ((unsigned char) src[4]))
1268 	    {
1269 	      *mode = D_REG_N;
1270 	      *reg = 10 + src[3] - '0';
1271 	      return 4;
1272 	    }
1273 	}
1274       if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1)
1275 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1276 	{
1277 	  *mode = D_REG_N;
1278 	  *reg = (src[2] - '0');
1279 	  return 3;
1280 	}
1281     }
1282   if (l0 == 'x' && l1 == 'd')
1283     {
1284       if (src[2] == '1')
1285 	{
1286 	  if (src[3] >= '0' && src[3] <= '4' && ! ((src[3] - '0') & 1)
1287 	      && ! IDENT_CHAR ((unsigned char) src[4]))
1288 	    {
1289 	      *mode = X_REG_N;
1290 	      *reg = 11 + src[3] - '0';
1291 	      return 4;
1292 	    }
1293 	}
1294       if (src[2] >= '0' && src[2] <= '8' && ! ((src[2] - '0') & 1)
1295 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1296 	{
1297 	  *mode = X_REG_N;
1298 	  *reg = (src[2] - '0') + 1;
1299 	  return 3;
1300 	}
1301     }
1302   if (l0 == 'f' && l1 == 'v')
1303     {
1304       if (src[2] == '1'&& src[3] == '2' && ! IDENT_CHAR ((unsigned char) src[4]))
1305 	{
1306 	  *mode = V_REG_N;
1307 	  *reg = 12;
1308 	  return 4;
1309 	}
1310       if ((src[2] == '0' || src[2] == '4' || src[2] == '8')
1311 	  && ! IDENT_CHAR ((unsigned char) src[3]))
1312 	{
1313 	  *mode = V_REG_N;
1314 	  *reg = (src[2] - '0');
1315 	  return 3;
1316 	}
1317     }
1318   if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 'u'
1319       && TOLOWER (src[3]) == 'l'
1320       && ! IDENT_CHAR ((unsigned char) src[4]))
1321     {
1322       *mode = FPUL_N;
1323       return 4;
1324     }
1325 
1326   if (l0 == 'f' && l1 == 'p' && TOLOWER (src[2]) == 's'
1327       && TOLOWER (src[3]) == 'c'
1328       && TOLOWER (src[4]) == 'r' && ! IDENT_CHAR ((unsigned char) src[5]))
1329     {
1330       *mode = FPSCR_N;
1331       return 5;
1332     }
1333 
1334   if (l0 == 'x' && l1 == 'm' && TOLOWER (src[2]) == 't'
1335       && TOLOWER (src[3]) == 'r'
1336       && TOLOWER (src[4]) == 'x' && ! IDENT_CHAR ((unsigned char) src[5]))
1337     {
1338       *mode = XMTRX_M4;
1339       return 5;
1340     }
1341 
1342   return 0;
1343 }
1344 
1345 /* Like parse_reg_without_prefix, but this version supports
1346    $-prefixed register names if enabled by the user.  */
1347 
1348 static unsigned int
parse_reg(char * src,sh_arg_type * mode,int * reg)1349 parse_reg (char *src, sh_arg_type *mode, int *reg)
1350 {
1351   unsigned int prefix;
1352   unsigned int consumed;
1353 
1354   if (src[0] == '$')
1355     {
1356       if (allow_dollar_register_prefix)
1357 	{
1358 	  src ++;
1359 	  prefix = 1;
1360 	}
1361       else
1362 	return 0;
1363     }
1364   else
1365     prefix = 0;
1366 
1367   consumed = parse_reg_without_prefix (src, mode, reg);
1368 
1369   if (consumed == 0)
1370     return 0;
1371 
1372   return consumed + prefix;
1373 }
1374 
1375 static char *
parse_exp(char * s,sh_operand_info * op)1376 parse_exp (char *s, sh_operand_info *op)
1377 {
1378   char *save;
1379   char *new_pointer;
1380 
1381   save = input_line_pointer;
1382   input_line_pointer = s;
1383   expression (&op->immediate);
1384   if (op->immediate.X_op == O_absent)
1385     as_bad (_("missing operand"));
1386   new_pointer = input_line_pointer;
1387   input_line_pointer = save;
1388   return new_pointer;
1389 }
1390 
1391 /* The many forms of operand:
1392 
1393    Rn                   Register direct
1394    @Rn                  Register indirect
1395    @Rn+                 Autoincrement
1396    @-Rn                 Autodecrement
1397    @(disp:4,Rn)
1398    @(disp:8,GBR)
1399    @(disp:8,PC)
1400 
1401    @(R0,Rn)
1402    @(R0,GBR)
1403 
1404    disp:8
1405    disp:12
1406    #imm8
1407    pr, gbr, vbr, macl, mach
1408  */
1409 
1410 static char *
parse_at(char * src,sh_operand_info * op)1411 parse_at (char *src, sh_operand_info *op)
1412 {
1413   int len;
1414   sh_arg_type mode;
1415   src++;
1416   if (src[0] == '@')
1417     {
1418       src = parse_at (src, op);
1419       if (op->type == A_DISP_TBR)
1420 	op->type = A_DISP2_TBR;
1421       else
1422 	as_bad (_("illegal double indirection"));
1423     }
1424   else if (src[0] == '-')
1425     {
1426       /* Must be predecrement.  */
1427       src++;
1428 
1429       len = parse_reg (src, &mode, &(op->reg));
1430       if (mode != A_REG_N)
1431 	as_bad (_("illegal register after @-"));
1432 
1433       op->type = A_DEC_N;
1434       src += len;
1435     }
1436   else if (src[0] == '(')
1437     {
1438       /* Could be @(disp, rn), @(disp, gbr), @(disp, pc),  @(r0, gbr) or
1439          @(r0, rn).  */
1440       src++;
1441       len = parse_reg (src, &mode, &(op->reg));
1442       if (len && mode == A_REG_N)
1443 	{
1444 	  src += len;
1445 	  if (op->reg != 0)
1446 	    {
1447 	      as_bad (_("must be @(r0,...)"));
1448 	    }
1449 	  if (src[0] == ',')
1450 	    {
1451 	      src++;
1452 	      /* Now can be rn or gbr.  */
1453 	      len = parse_reg (src, &mode, &(op->reg));
1454 	    }
1455 	  else
1456 	    {
1457 	      len = 0;
1458 	    }
1459 	  if (len)
1460 	    {
1461 	      if (mode == A_GBR)
1462 		{
1463 		  op->type = A_R0_GBR;
1464 		}
1465 	      else if (mode == A_REG_N)
1466 		{
1467 		  op->type = A_IND_R0_REG_N;
1468 		}
1469 	      else
1470 		{
1471 		  as_bad (_("syntax error in @(r0,...)"));
1472 		}
1473 	    }
1474 	  else
1475 	    {
1476 	      as_bad (_("syntax error in @(r0...)"));
1477 	    }
1478 	}
1479       else
1480 	{
1481 	  /* Must be an @(disp,.. thing).  */
1482 	  src = parse_exp (src, op);
1483 	  if (src[0] == ',')
1484 	    src++;
1485 	  /* Now can be rn, gbr or pc.  */
1486 	  len = parse_reg (src, &mode, &op->reg);
1487 	  if (len)
1488 	    {
1489 	      if (mode == A_REG_N)
1490 		{
1491 		  op->type = A_DISP_REG_N;
1492 		}
1493 	      else if (mode == A_GBR)
1494 		{
1495 		  op->type = A_DISP_GBR;
1496 		}
1497 	      else if (mode == A_TBR)
1498 		{
1499 		  op->type = A_DISP_TBR;
1500 		}
1501 	      else if (mode == A_PC)
1502 		{
1503 		  /* We want @(expr, pc) to uniformly address . + expr,
1504 		     no matter if expr is a constant, or a more complex
1505 		     expression, e.g. sym-. or sym1-sym2.
1506 		     However, we also used to accept @(sym,pc)
1507 		     as addressing sym, i.e. meaning the same as plain sym.
1508 		     Some existing code does use the @(sym,pc) syntax, so
1509 		     we give it the old semantics for now, but warn about
1510 		     its use, so that users have some time to fix their code.
1511 
1512 		     Note that due to this backward compatibility hack,
1513 		     we'll get unexpected results when @(offset, pc) is used,
1514 		     and offset is a symbol that is set later to an an address
1515 		     difference, or an external symbol that is set to an
1516 		     address difference in another source file, so we want to
1517 		     eventually remove it.  */
1518 		  if (op->immediate.X_op == O_symbol)
1519 		    {
1520 		      op->type = A_DISP_PC;
1521 		      as_warn (_("Deprecated syntax."));
1522 		    }
1523 		  else
1524 		    {
1525 		      op->type = A_DISP_PC_ABS;
1526 		      /* Such operands don't get corrected for PC==.+4, so
1527 			 make the correction here.  */
1528 		      op->immediate.X_add_number -= 4;
1529 		    }
1530 		}
1531 	      else
1532 		{
1533 		  as_bad (_("syntax error in @(disp,[Rn, gbr, pc])"));
1534 		}
1535 	    }
1536 	  else
1537 	    {
1538 	      as_bad (_("syntax error in @(disp,[Rn, gbr, pc])"));
1539 	    }
1540 	}
1541       src += len;
1542       if (src[0] != ')')
1543 	as_bad (_("expecting )"));
1544       else
1545 	src++;
1546     }
1547   else
1548     {
1549       src += parse_reg (src, &mode, &(op->reg));
1550       if (mode != A_REG_N)
1551 	as_bad (_("illegal register after @"));
1552 
1553       if (src[0] == '+')
1554 	{
1555 	  char l0, l1;
1556 
1557 	  src++;
1558 	  l0 = TOLOWER (src[0]);
1559 	  l1 = TOLOWER (src[1]);
1560 
1561 	  if ((l0 == 'r' && l1 == '8')
1562 	      || (l0 == 'i' && (l1 == 'x' || l1 == 's')))
1563 	    {
1564 	      src += 2;
1565 	      op->type = AX_PMOD_N;
1566 	    }
1567 	  else if (   (l0 == 'r' && l1 == '9')
1568 		   || (l0 == 'i' && l1 == 'y'))
1569 	    {
1570 	      src += 2;
1571 	      op->type = AY_PMOD_N;
1572 	    }
1573 	  else
1574 	    op->type = A_INC_N;
1575 	}
1576       else
1577 	op->type = A_IND_N;
1578     }
1579   return src;
1580 }
1581 
1582 static void
get_operand(char ** ptr,sh_operand_info * op)1583 get_operand (char **ptr, sh_operand_info *op)
1584 {
1585   char *src = *ptr;
1586   sh_arg_type mode = (sh_arg_type) -1;
1587   unsigned int len;
1588 
1589   if (src[0] == '#')
1590     {
1591       src++;
1592       *ptr = parse_exp (src, op);
1593       op->type = A_IMM;
1594       return;
1595     }
1596 
1597   else if (src[0] == '@')
1598     {
1599       *ptr = parse_at (src, op);
1600       return;
1601     }
1602   len = parse_reg (src, &mode, &(op->reg));
1603   if (len)
1604     {
1605       *ptr = src + len;
1606       op->type = mode;
1607       return;
1608     }
1609   else
1610     {
1611       /* Not a reg, the only thing left is a displacement.  */
1612       *ptr = parse_exp (src, op);
1613       op->type = A_DISP_PC;
1614       return;
1615     }
1616 }
1617 
1618 static char *
get_operands(sh_opcode_info * info,char * args,sh_operand_info * operand)1619 get_operands (sh_opcode_info *info, char *args, sh_operand_info *operand)
1620 {
1621   char *ptr = args;
1622   if (info->arg[0])
1623     {
1624       /* The pre-processor will eliminate whitespace in front of '@'
1625 	 after the first argument; we may be called multiple times
1626 	 from assemble_ppi, so don't insist on finding whitespace here.  */
1627       if (*ptr == ' ')
1628 	ptr++;
1629 
1630       get_operand (&ptr, operand + 0);
1631       if (info->arg[1])
1632 	{
1633 	  if (*ptr == ',')
1634 	    {
1635 	      ptr++;
1636 	    }
1637 	  get_operand (&ptr, operand + 1);
1638 	  /* ??? Hack: psha/pshl have a varying operand number depending on
1639 	     the type of the first operand.  We handle this by having the
1640 	     three-operand version first and reducing the number of operands
1641 	     parsed to two if we see that the first operand is an immediate.
1642              This works because no insn with three operands has an immediate
1643 	     as first operand.  */
1644 	  if (info->arg[2] && operand[0].type != A_IMM)
1645 	    {
1646 	      if (*ptr == ',')
1647 		{
1648 		  ptr++;
1649 		}
1650 	      get_operand (&ptr, operand + 2);
1651 	    }
1652 	  else
1653 	    {
1654 	      operand[2].type = 0;
1655 	    }
1656 	}
1657       else
1658 	{
1659 	  operand[1].type = 0;
1660 	  operand[2].type = 0;
1661 	}
1662     }
1663   else
1664     {
1665       operand[0].type = 0;
1666       operand[1].type = 0;
1667       operand[2].type = 0;
1668     }
1669   return ptr;
1670 }
1671 
1672 /* Passed a pointer to a list of opcodes which use different
1673    addressing modes, return the opcode which matches the opcodes
1674    provided.  */
1675 
1676 static sh_opcode_info *
get_specific(sh_opcode_info * opcode,sh_operand_info * operands)1677 get_specific (sh_opcode_info *opcode, sh_operand_info *operands)
1678 {
1679   sh_opcode_info *this_try = opcode;
1680   const char *name = opcode->name;
1681   int n = 0;
1682 
1683   while (opcode->name)
1684     {
1685       this_try = opcode++;
1686       if ((this_try->name != name) && (strcmp (this_try->name, name) != 0))
1687 	{
1688 	  /* We've looked so far down the table that we've run out of
1689 	     opcodes with the same name.  */
1690 	  return 0;
1691 	}
1692 
1693       /* Look at both operands needed by the opcodes and provided by
1694          the user - since an arg test will often fail on the same arg
1695          again and again, we'll try and test the last failing arg the
1696          first on each opcode try.  */
1697       for (n = 0; this_try->arg[n]; n++)
1698 	{
1699 	  sh_operand_info *user = operands + n;
1700 	  sh_arg_type arg = this_try->arg[n];
1701 
1702 	  switch (arg)
1703 	    {
1704 	    case A_DISP_PC:
1705 	      if (user->type == A_DISP_PC_ABS)
1706 		break;
1707 	      /* Fall through.  */
1708 	    case A_IMM:
1709 	    case A_BDISP12:
1710 	    case A_BDISP8:
1711 	    case A_DISP_GBR:
1712 	    case A_DISP2_TBR:
1713 	    case A_MACH:
1714 	    case A_PR:
1715 	    case A_MACL:
1716 	      if (user->type != arg)
1717 		goto fail;
1718 	      break;
1719 	    case A_R0:
1720 	      /* opcode needs r0 */
1721 	      if (user->type != A_REG_N || user->reg != 0)
1722 		goto fail;
1723 	      break;
1724 	    case A_R0_GBR:
1725 	      if (user->type != A_R0_GBR || user->reg != 0)
1726 		goto fail;
1727 	      break;
1728 	    case F_FR0:
1729 	      if (user->type != F_REG_N || user->reg != 0)
1730 		goto fail;
1731 	      break;
1732 
1733 	    case A_REG_N:
1734 	    case A_INC_N:
1735 	    case A_DEC_N:
1736 	    case A_IND_N:
1737 	    case A_IND_R0_REG_N:
1738 	    case A_DISP_REG_N:
1739 	    case F_REG_N:
1740 	    case D_REG_N:
1741 	    case X_REG_N:
1742 	    case V_REG_N:
1743 	    case FPUL_N:
1744 	    case FPSCR_N:
1745 	    case DSP_REG_N:
1746 	      /* Opcode needs rn */
1747 	      if (user->type != arg)
1748 		goto fail;
1749 	      reg_n = user->reg;
1750 	      break;
1751 	    case DX_REG_N:
1752 	      if (user->type != D_REG_N && user->type != X_REG_N)
1753 		goto fail;
1754 	      reg_n = user->reg;
1755 	      break;
1756 	    case A_GBR:
1757 	    case A_TBR:
1758 	    case A_SR:
1759 	    case A_VBR:
1760 	    case A_DSR:
1761 	    case A_MOD:
1762 	    case A_RE:
1763 	    case A_RS:
1764 	    case A_SSR:
1765 	    case A_SPC:
1766 	    case A_SGR:
1767 	    case A_DBR:
1768 	      if (user->type != arg)
1769 		goto fail;
1770 	      break;
1771 
1772 	    case A_REG_B:
1773 	      if (user->type != arg)
1774 		goto fail;
1775 	      reg_b = user->reg;
1776 	      break;
1777 
1778 	    case A_INC_R15:
1779 	      if (user->type != A_INC_N)
1780 		goto fail;
1781 	      if (user->reg != 15)
1782 		goto fail;
1783 	      reg_n = user->reg;
1784 	      break;
1785 
1786 	    case A_DEC_R15:
1787 	      if (user->type != A_DEC_N)
1788 		goto fail;
1789 	      if (user->reg != 15)
1790 		goto fail;
1791 	      reg_n = user->reg;
1792 	      break;
1793 
1794 	    case A_REG_M:
1795 	    case A_INC_M:
1796 	    case A_DEC_M:
1797 	    case A_IND_M:
1798 	    case A_IND_R0_REG_M:
1799 	    case A_DISP_REG_M:
1800 	    case DSP_REG_M:
1801 	      /* Opcode needs rn */
1802 	      if (user->type != arg - A_REG_M + A_REG_N)
1803 		goto fail;
1804 	      reg_m = user->reg;
1805 	      break;
1806 
1807 	    case AS_DEC_N:
1808 	      if (user->type != A_DEC_N)
1809 		goto fail;
1810 	      if (user->reg < 2 || user->reg > 5)
1811 		goto fail;
1812 	      reg_n = user->reg;
1813 	      break;
1814 
1815 	    case AS_INC_N:
1816 	      if (user->type != A_INC_N)
1817 		goto fail;
1818 	      if (user->reg < 2 || user->reg > 5)
1819 		goto fail;
1820 	      reg_n = user->reg;
1821 	      break;
1822 
1823 	    case AS_IND_N:
1824 	      if (user->type != A_IND_N)
1825 		goto fail;
1826 	      if (user->reg < 2 || user->reg > 5)
1827 		goto fail;
1828 	      reg_n = user->reg;
1829 	      break;
1830 
1831 	    case AS_PMOD_N:
1832 	      if (user->type != AX_PMOD_N)
1833 		goto fail;
1834 	      if (user->reg < 2 || user->reg > 5)
1835 		goto fail;
1836 	      reg_n = user->reg;
1837 	      break;
1838 
1839 	    case AX_INC_N:
1840 	      if (user->type != A_INC_N)
1841 		goto fail;
1842 	      if (user->reg < 4 || user->reg > 5)
1843 		goto fail;
1844 	      reg_n = user->reg;
1845 	      break;
1846 
1847 	    case AX_IND_N:
1848 	      if (user->type != A_IND_N)
1849 		goto fail;
1850 	      if (user->reg < 4 || user->reg > 5)
1851 		goto fail;
1852 	      reg_n = user->reg;
1853 	      break;
1854 
1855 	    case AX_PMOD_N:
1856 	      if (user->type != AX_PMOD_N)
1857 		goto fail;
1858 	      if (user->reg < 4 || user->reg > 5)
1859 		goto fail;
1860 	      reg_n = user->reg;
1861 	      break;
1862 
1863 	    case AXY_INC_N:
1864 	      if (user->type != A_INC_N)
1865 		goto fail;
1866 	      if ((user->reg < 4 || user->reg > 5)
1867 		  && (user->reg < 0 || user->reg > 1))
1868 		goto fail;
1869 	      reg_n = user->reg;
1870 	      break;
1871 
1872 	    case AXY_IND_N:
1873 	      if (user->type != A_IND_N)
1874 		goto fail;
1875 	      if ((user->reg < 4 || user->reg > 5)
1876 		  && (user->reg < 0 || user->reg > 1))
1877 		goto fail;
1878 	      reg_n = user->reg;
1879 	      break;
1880 
1881 	    case AXY_PMOD_N:
1882 	      if (user->type != AX_PMOD_N)
1883 		goto fail;
1884 	      if ((user->reg < 4 || user->reg > 5)
1885 		  && (user->reg < 0 || user->reg > 1))
1886 		goto fail;
1887 	      reg_n = user->reg;
1888 	      break;
1889 
1890 	    case AY_INC_N:
1891 	      if (user->type != A_INC_N)
1892 		goto fail;
1893 	      if (user->reg < 6 || user->reg > 7)
1894 		goto fail;
1895 	      reg_n = user->reg;
1896 	      break;
1897 
1898 	    case AY_IND_N:
1899 	      if (user->type != A_IND_N)
1900 		goto fail;
1901 	      if (user->reg < 6 || user->reg > 7)
1902 		goto fail;
1903 	      reg_n = user->reg;
1904 	      break;
1905 
1906 	    case AY_PMOD_N:
1907 	      if (user->type != AY_PMOD_N)
1908 		goto fail;
1909 	      if (user->reg < 6 || user->reg > 7)
1910 		goto fail;
1911 	      reg_n = user->reg;
1912 	      break;
1913 
1914 	    case AYX_INC_N:
1915 	      if (user->type != A_INC_N)
1916 		goto fail;
1917 	      if ((user->reg < 6 || user->reg > 7)
1918 		  && (user->reg < 2 || user->reg > 3))
1919 		goto fail;
1920 	      reg_n = user->reg;
1921 	      break;
1922 
1923 	    case AYX_IND_N:
1924 	      if (user->type != A_IND_N)
1925 		goto fail;
1926 	      if ((user->reg < 6 || user->reg > 7)
1927 		  && (user->reg < 2 || user->reg > 3))
1928 		goto fail;
1929 	      reg_n = user->reg;
1930 	      break;
1931 
1932 	    case AYX_PMOD_N:
1933 	      if (user->type != AY_PMOD_N)
1934 		goto fail;
1935 	      if ((user->reg < 6 || user->reg > 7)
1936 		  && (user->reg < 2 || user->reg > 3))
1937 		goto fail;
1938 	      reg_n = user->reg;
1939 	      break;
1940 
1941 	    case DSP_REG_A_M:
1942 	      if (user->type != DSP_REG_N)
1943 		goto fail;
1944 	      if (user->reg != A_A0_NUM
1945 		  && user->reg != A_A1_NUM)
1946 		goto fail;
1947 	      reg_m = user->reg;
1948 	      break;
1949 
1950 	    case DSP_REG_AX:
1951 	      if (user->type != DSP_REG_N)
1952 		goto fail;
1953 	      switch (user->reg)
1954 		{
1955 		case A_A0_NUM:
1956 		  reg_x = 0;
1957 		  break;
1958 		case A_A1_NUM:
1959 		  reg_x = 2;
1960 		  break;
1961 		case A_X0_NUM:
1962 		  reg_x = 1;
1963 		  break;
1964 		case A_X1_NUM:
1965 		  reg_x = 3;
1966 		  break;
1967 		default:
1968 		  goto fail;
1969 		}
1970 	      break;
1971 
1972 	    case DSP_REG_XY:
1973 	      if (user->type != DSP_REG_N)
1974 		goto fail;
1975 	      switch (user->reg)
1976 		{
1977 		case A_X0_NUM:
1978 		  reg_x = 0;
1979 		  break;
1980 		case A_X1_NUM:
1981 		  reg_x = 2;
1982 		  break;
1983 		case A_Y0_NUM:
1984 		  reg_x = 1;
1985 		  break;
1986 		case A_Y1_NUM:
1987 		  reg_x = 3;
1988 		  break;
1989 		default:
1990 		  goto fail;
1991 		}
1992 	      break;
1993 
1994 	    case DSP_REG_AY:
1995 	      if (user->type != DSP_REG_N)
1996 		goto fail;
1997 	      switch (user->reg)
1998 		{
1999 		case A_A0_NUM:
2000 		  reg_y = 0;
2001 		  break;
2002 		case A_A1_NUM:
2003 		  reg_y = 1;
2004 		  break;
2005 		case A_Y0_NUM:
2006 		  reg_y = 2;
2007 		  break;
2008 		case A_Y1_NUM:
2009 		  reg_y = 3;
2010 		  break;
2011 		default:
2012 		  goto fail;
2013 		}
2014 	      break;
2015 
2016 	    case DSP_REG_YX:
2017 	      if (user->type != DSP_REG_N)
2018 		goto fail;
2019 	      switch (user->reg)
2020 		{
2021 		case A_Y0_NUM:
2022 		  reg_y = 0;
2023 		  break;
2024 		case A_Y1_NUM:
2025 		  reg_y = 1;
2026 		  break;
2027 		case A_X0_NUM:
2028 		  reg_y = 2;
2029 		  break;
2030 		case A_X1_NUM:
2031 		  reg_y = 3;
2032 		  break;
2033 		default:
2034 		  goto fail;
2035 		}
2036 	      break;
2037 
2038 	    case DSP_REG_X:
2039 	      if (user->type != DSP_REG_N)
2040 		goto fail;
2041 	      switch (user->reg)
2042 		{
2043 		case A_X0_NUM:
2044 		  reg_x = 0;
2045 		  break;
2046 		case A_X1_NUM:
2047 		  reg_x = 1;
2048 		  break;
2049 		case A_A0_NUM:
2050 		  reg_x = 2;
2051 		  break;
2052 		case A_A1_NUM:
2053 		  reg_x = 3;
2054 		  break;
2055 		default:
2056 		  goto fail;
2057 		}
2058 	      break;
2059 
2060 	    case DSP_REG_Y:
2061 	      if (user->type != DSP_REG_N)
2062 		goto fail;
2063 	      switch (user->reg)
2064 		{
2065 		case A_Y0_NUM:
2066 		  reg_y = 0;
2067 		  break;
2068 		case A_Y1_NUM:
2069 		  reg_y = 1;
2070 		  break;
2071 		case A_M0_NUM:
2072 		  reg_y = 2;
2073 		  break;
2074 		case A_M1_NUM:
2075 		  reg_y = 3;
2076 		  break;
2077 		default:
2078 		  goto fail;
2079 		}
2080 	      break;
2081 
2082 	    case DSP_REG_E:
2083 	      if (user->type != DSP_REG_N)
2084 		goto fail;
2085 	      switch (user->reg)
2086 		{
2087 		case A_X0_NUM:
2088 		  reg_efg = 0 << 10;
2089 		  break;
2090 		case A_X1_NUM:
2091 		  reg_efg = 1 << 10;
2092 		  break;
2093 		case A_Y0_NUM:
2094 		  reg_efg = 2 << 10;
2095 		  break;
2096 		case A_A1_NUM:
2097 		  reg_efg = 3 << 10;
2098 		  break;
2099 		default:
2100 		  goto fail;
2101 		}
2102 	      break;
2103 
2104 	    case DSP_REG_F:
2105 	      if (user->type != DSP_REG_N)
2106 		goto fail;
2107 	      switch (user->reg)
2108 		{
2109 		case A_Y0_NUM:
2110 		  reg_efg |= 0 << 8;
2111 		  break;
2112 		case A_Y1_NUM:
2113 		  reg_efg |= 1 << 8;
2114 		  break;
2115 		case A_X0_NUM:
2116 		  reg_efg |= 2 << 8;
2117 		  break;
2118 		case A_A1_NUM:
2119 		  reg_efg |= 3 << 8;
2120 		  break;
2121 		default:
2122 		  goto fail;
2123 		}
2124 	      break;
2125 
2126 	    case DSP_REG_G:
2127 	      if (user->type != DSP_REG_N)
2128 		goto fail;
2129 	      switch (user->reg)
2130 		{
2131 		case A_M0_NUM:
2132 		  reg_efg |= 0 << 2;
2133 		  break;
2134 		case A_M1_NUM:
2135 		  reg_efg |= 1 << 2;
2136 		  break;
2137 		case A_A0_NUM:
2138 		  reg_efg |= 2 << 2;
2139 		  break;
2140 		case A_A1_NUM:
2141 		  reg_efg |= 3 << 2;
2142 		  break;
2143 		default:
2144 		  goto fail;
2145 		}
2146 	      break;
2147 
2148 	    case A_A0:
2149 	      if (user->type != DSP_REG_N || user->reg != A_A0_NUM)
2150 		goto fail;
2151 	      break;
2152 	    case A_X0:
2153 	      if (user->type != DSP_REG_N || user->reg != A_X0_NUM)
2154 		goto fail;
2155 	      break;
2156 	    case A_X1:
2157 	      if (user->type != DSP_REG_N || user->reg != A_X1_NUM)
2158 		goto fail;
2159 	      break;
2160 	    case A_Y0:
2161 	      if (user->type != DSP_REG_N || user->reg != A_Y0_NUM)
2162 		goto fail;
2163 	      break;
2164 	    case A_Y1:
2165 	      if (user->type != DSP_REG_N || user->reg != A_Y1_NUM)
2166 		goto fail;
2167 	      break;
2168 
2169 	    case F_REG_M:
2170 	    case D_REG_M:
2171 	    case X_REG_M:
2172 	    case V_REG_M:
2173 	    case FPUL_M:
2174 	    case FPSCR_M:
2175 	      /* Opcode needs rn */
2176 	      if (user->type != arg - F_REG_M + F_REG_N)
2177 		goto fail;
2178 	      reg_m = user->reg;
2179 	      break;
2180 	    case DX_REG_M:
2181 	      if (user->type != D_REG_N && user->type != X_REG_N)
2182 		goto fail;
2183 	      reg_m = user->reg;
2184 	      break;
2185 	    case XMTRX_M4:
2186 	      if (user->type != XMTRX_M4)
2187 		goto fail;
2188 	      reg_m = 4;
2189 	      break;
2190 
2191 	    default:
2192 	      printf (_("unhandled %d\n"), arg);
2193 	      goto fail;
2194 	    }
2195 	  if (SH_MERGE_ARCH_SET_VALID (valid_arch, arch_sh2a_nofpu_up)
2196 	      && (   arg == A_DISP_REG_M
2197 		  || arg == A_DISP_REG_N))
2198 	    {
2199 	      /* Check a few key IMM* fields for overflow.  */
2200 	      int opf;
2201 	      long val = user->immediate.X_add_number;
2202 
2203 	      for (opf = 0; opf < 4; opf ++)
2204 		switch (this_try->nibbles[opf])
2205 		  {
2206 		  case IMM0_4:
2207 		  case IMM1_4:
2208 		    if (val < 0 || val > 15)
2209 		      goto fail;
2210 		    break;
2211 		  case IMM0_4BY2:
2212 		  case IMM1_4BY2:
2213 		    if (val < 0 || val > 15 * 2)
2214 		      goto fail;
2215 		    break;
2216 		  case IMM0_4BY4:
2217 		  case IMM1_4BY4:
2218 		    if (val < 0 || val > 15 * 4)
2219 		      goto fail;
2220 		    break;
2221 		  default:
2222 		    break;
2223 		  }
2224 	    }
2225 	}
2226       if ( !SH_MERGE_ARCH_SET_VALID (valid_arch, this_try->arch))
2227 	goto fail;
2228       valid_arch = SH_MERGE_ARCH_SET (valid_arch, this_try->arch);
2229       return this_try;
2230     fail:
2231       ;
2232     }
2233 
2234   return 0;
2235 }
2236 
2237 static void
insert(char * where,bfd_reloc_code_real_type how,int pcrel,sh_operand_info * op)2238 insert (char *where, bfd_reloc_code_real_type how, int pcrel,
2239        	sh_operand_info *op)
2240 {
2241   fix_new_exp (frag_now,
2242 	       where - frag_now->fr_literal,
2243 	       2,
2244 	       &op->immediate,
2245 	       pcrel,
2246 	       how);
2247 }
2248 
2249 static void
insert4(char * where,bfd_reloc_code_real_type how,int pcrel,sh_operand_info * op)2250 insert4 (char * where, bfd_reloc_code_real_type how, int pcrel,
2251 	 sh_operand_info * op)
2252 {
2253   fix_new_exp (frag_now,
2254 	       where - frag_now->fr_literal,
2255 	       4,
2256 	       & op->immediate,
2257 	       pcrel,
2258 	       how);
2259 }
2260 static void
build_relax(sh_opcode_info * opcode,sh_operand_info * op)2261 build_relax (sh_opcode_info *opcode, sh_operand_info *op)
2262 {
2263   int high_byte = target_big_endian ? 0 : 1;
2264   char *p;
2265 
2266   if (opcode->arg[0] == A_BDISP8)
2267     {
2268       int what = (opcode->nibbles[1] & 4) ? COND_JUMP_DELAY : COND_JUMP;
2269       p = frag_var (rs_machine_dependent,
2270 		    md_relax_table[C (what, COND32)].rlx_length,
2271 		    md_relax_table[C (what, COND8)].rlx_length,
2272 		    C (what, 0),
2273 		    op->immediate.X_add_symbol,
2274 		    op->immediate.X_add_number,
2275 		    0);
2276       p[high_byte] = (opcode->nibbles[0] << 4) | (opcode->nibbles[1]);
2277     }
2278   else if (opcode->arg[0] == A_BDISP12)
2279     {
2280       p = frag_var (rs_machine_dependent,
2281 		    md_relax_table[C (UNCOND_JUMP, UNCOND32)].rlx_length,
2282 		    md_relax_table[C (UNCOND_JUMP, UNCOND12)].rlx_length,
2283 		    C (UNCOND_JUMP, 0),
2284 		    op->immediate.X_add_symbol,
2285 		    op->immediate.X_add_number,
2286 		    0);
2287       p[high_byte] = (opcode->nibbles[0] << 4);
2288     }
2289 
2290 }
2291 
2292 /* Insert ldrs & ldre with fancy relocations that relaxation can recognize.  */
2293 
2294 static char *
insert_loop_bounds(char * output,sh_operand_info * operand)2295 insert_loop_bounds (char *output, sh_operand_info *operand)
2296 {
2297   symbolS *end_sym;
2298 
2299   /* Since the low byte of the opcode will be overwritten by the reloc, we
2300      can just stash the high byte into both bytes and ignore endianness.  */
2301   output[0] = 0x8c;
2302   output[1] = 0x8c;
2303   insert (output, BFD_RELOC_SH_LOOP_START, 1, operand);
2304   insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1);
2305 
2306   if (sh_relax)
2307     {
2308       static int count = 0;
2309       char name[11];
2310 
2311       /* If the last loop insn is a two-byte-insn, it is in danger of being
2312 	 swapped with the insn after it.  To prevent this, create a new
2313 	 symbol - complete with SH_LABEL reloc - after the last loop insn.
2314 	 If the last loop insn is four bytes long, the symbol will be
2315 	 right in the middle, but four byte insns are not swapped anyways.  */
2316       /* A REPEAT takes 6 bytes.  The SH has a 32 bit address space.
2317 	 Hence a 9 digit number should be enough to count all REPEATs.  */
2318       sprintf (name, "_R%x", count++ & 0x3fffffff);
2319       end_sym = symbol_new (name, undefined_section, 0, &zero_address_frag);
2320       /* Make this a local symbol.  */
2321 #ifdef OBJ_COFF
2322       SF_SET_LOCAL (end_sym);
2323 #endif /* OBJ_COFF */
2324       symbol_table_insert (end_sym);
2325       end_sym->sy_value = operand[1].immediate;
2326       end_sym->sy_value.X_add_number += 2;
2327       fix_new (frag_now, frag_now_fix (), 2, end_sym, 0, 1, BFD_RELOC_SH_LABEL);
2328     }
2329 
2330   output = frag_more (2);
2331   output[0] = 0x8e;
2332   output[1] = 0x8e;
2333   insert (output, BFD_RELOC_SH_LOOP_START, 1, operand);
2334   insert (output, BFD_RELOC_SH_LOOP_END, 1, operand + 1);
2335 
2336   return frag_more (2);
2337 }
2338 
2339 /* Now we know what sort of opcodes it is, let's build the bytes.  */
2340 
2341 static unsigned int
build_Mytes(sh_opcode_info * opcode,sh_operand_info * operand)2342 build_Mytes (sh_opcode_info *opcode, sh_operand_info *operand)
2343 {
2344   int indx;
2345   char nbuf[8];
2346   char *output;
2347   unsigned int size = 2;
2348   int low_byte = target_big_endian ? 1 : 0;
2349   int max_index = 4;
2350   bfd_reloc_code_real_type r_type;
2351 #ifdef OBJ_ELF
2352   int unhandled_pic = 0;
2353 #endif
2354 
2355   nbuf[0] = 0;
2356   nbuf[1] = 0;
2357   nbuf[2] = 0;
2358   nbuf[3] = 0;
2359   nbuf[4] = 0;
2360   nbuf[5] = 0;
2361   nbuf[6] = 0;
2362   nbuf[7] = 0;
2363 
2364 #ifdef OBJ_ELF
2365   for (indx = 0; indx < 3; indx++)
2366     if (opcode->arg[indx] == A_IMM
2367 	&& operand[indx].type == A_IMM
2368 	&& (operand[indx].immediate.X_op == O_PIC_reloc
2369 	    || sh_PIC_related_p (operand[indx].immediate.X_add_symbol)
2370 	    || sh_PIC_related_p (operand[indx].immediate.X_op_symbol)))
2371       unhandled_pic = 1;
2372 #endif
2373 
2374   if (SH_MERGE_ARCH_SET (opcode->arch, arch_op32))
2375     {
2376       output = frag_more (4);
2377       size = 4;
2378       max_index = 8;
2379     }
2380   else
2381     output = frag_more (2);
2382 
2383   for (indx = 0; indx < max_index; indx++)
2384     {
2385       sh_nibble_type i = opcode->nibbles[indx];
2386       if (i < 16)
2387 	{
2388 	  nbuf[indx] = i;
2389 	}
2390       else
2391 	{
2392 	  switch (i)
2393 	    {
2394 	    case REG_N:
2395 	    case REG_N_D:
2396 	      nbuf[indx] = reg_n;
2397 	      break;
2398 	    case REG_M:
2399 	      nbuf[indx] = reg_m;
2400 	      break;
2401 	    case SDT_REG_N:
2402 	      if (reg_n < 2 || reg_n > 5)
2403 		as_bad (_("Invalid register: 'r%d'"), reg_n);
2404 	      nbuf[indx] = (reg_n & 3) | 4;
2405 	      break;
2406 	    case REG_NM:
2407 	      nbuf[indx] = reg_n | (reg_m >> 2);
2408 	      break;
2409 	    case REG_B:
2410 	      nbuf[indx] = reg_b | 0x08;
2411 	      break;
2412 	    case REG_N_B01:
2413 	      nbuf[indx] = reg_n | 0x01;
2414 	      break;
2415 	    case IMM0_3s:
2416 	      nbuf[indx] |= 0x08;
2417 	    case IMM0_3c:
2418 	      insert (output + low_byte, BFD_RELOC_SH_IMM3, 0, operand);
2419 	      break;
2420 	    case IMM0_3Us:
2421 	      nbuf[indx] |= 0x80;
2422 	    case IMM0_3Uc:
2423 	      insert (output + low_byte, BFD_RELOC_SH_IMM3U, 0, operand);
2424 	      break;
2425 	    case DISP0_12:
2426 	      insert (output + 2, BFD_RELOC_SH_DISP12, 0, operand);
2427 	      break;
2428 	    case DISP0_12BY2:
2429 	      insert (output + 2, BFD_RELOC_SH_DISP12BY2, 0, operand);
2430 	      break;
2431 	    case DISP0_12BY4:
2432 	      insert (output + 2, BFD_RELOC_SH_DISP12BY4, 0, operand);
2433 	      break;
2434 	    case DISP0_12BY8:
2435 	      insert (output + 2, BFD_RELOC_SH_DISP12BY8, 0, operand);
2436 	      break;
2437 	    case DISP1_12:
2438 	      insert (output + 2, BFD_RELOC_SH_DISP12, 0, operand+1);
2439 	      break;
2440 	    case DISP1_12BY2:
2441 	      insert (output + 2, BFD_RELOC_SH_DISP12BY2, 0, operand+1);
2442 	      break;
2443 	    case DISP1_12BY4:
2444 	      insert (output + 2, BFD_RELOC_SH_DISP12BY4, 0, operand+1);
2445 	      break;
2446 	    case DISP1_12BY8:
2447 	      insert (output + 2, BFD_RELOC_SH_DISP12BY8, 0, operand+1);
2448 	      break;
2449 	    case IMM0_20_4:
2450 	      break;
2451 	    case IMM0_20:
2452 	      r_type = BFD_RELOC_SH_DISP20;
2453 #ifdef OBJ_ELF
2454 	      if (sh_check_fixup (&operand->immediate, &r_type))
2455 		as_bad (_("Invalid PIC expression."));
2456 	      unhandled_pic = 0;
2457 #endif
2458 	      insert4 (output, r_type, 0, operand);
2459 	      break;
2460 	    case IMM0_20BY8:
2461 	      insert4 (output, BFD_RELOC_SH_DISP20BY8, 0, operand);
2462 	      break;
2463 	    case IMM0_4BY4:
2464 	      insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand);
2465 	      break;
2466 	    case IMM0_4BY2:
2467 	      insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand);
2468 	      break;
2469 	    case IMM0_4:
2470 	      insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand);
2471 	      break;
2472 	    case IMM1_4BY4:
2473 	      insert (output + low_byte, BFD_RELOC_SH_IMM4BY4, 0, operand + 1);
2474 	      break;
2475 	    case IMM1_4BY2:
2476 	      insert (output + low_byte, BFD_RELOC_SH_IMM4BY2, 0, operand + 1);
2477 	      break;
2478 	    case IMM1_4:
2479 	      insert (output + low_byte, BFD_RELOC_SH_IMM4, 0, operand + 1);
2480 	      break;
2481 	    case IMM0_8BY4:
2482 	      insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand);
2483 	      break;
2484 	    case IMM0_8BY2:
2485 	      insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand);
2486 	      break;
2487 	    case IMM0_8:
2488 	      insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand);
2489 	      break;
2490 	    case IMM1_8BY4:
2491 	      insert (output + low_byte, BFD_RELOC_SH_IMM8BY4, 0, operand + 1);
2492 	      break;
2493 	    case IMM1_8BY2:
2494 	      insert (output + low_byte, BFD_RELOC_SH_IMM8BY2, 0, operand + 1);
2495 	      break;
2496 	    case IMM1_8:
2497 	      insert (output + low_byte, BFD_RELOC_SH_IMM8, 0, operand + 1);
2498 	      break;
2499 	    case PCRELIMM_8BY4:
2500 	      insert (output, BFD_RELOC_SH_PCRELIMM8BY4,
2501 		      operand->type != A_DISP_PC_ABS, operand);
2502 	      break;
2503 	    case PCRELIMM_8BY2:
2504 	      insert (output, BFD_RELOC_SH_PCRELIMM8BY2,
2505 		      operand->type != A_DISP_PC_ABS, operand);
2506 	      break;
2507 	    case REPEAT:
2508 	      output = insert_loop_bounds (output, operand);
2509 	      nbuf[indx] = opcode->nibbles[3];
2510 	      operand += 2;
2511 	      break;
2512 	    default:
2513 	      printf (_("failed for %d\n"), i);
2514 	    }
2515 	}
2516     }
2517 #ifdef OBJ_ELF
2518   if (unhandled_pic)
2519     as_bad (_("misplaced PIC operand"));
2520 #endif
2521   if (!target_big_endian)
2522     {
2523       output[1] = (nbuf[0] << 4) | (nbuf[1]);
2524       output[0] = (nbuf[2] << 4) | (nbuf[3]);
2525     }
2526   else
2527     {
2528       output[0] = (nbuf[0] << 4) | (nbuf[1]);
2529       output[1] = (nbuf[2] << 4) | (nbuf[3]);
2530     }
2531   if (SH_MERGE_ARCH_SET (opcode->arch, arch_op32))
2532     {
2533       if (!target_big_endian)
2534 	{
2535 	  output[3] = (nbuf[4] << 4) | (nbuf[5]);
2536 	  output[2] = (nbuf[6] << 4) | (nbuf[7]);
2537 	}
2538       else
2539 	{
2540 	  output[2] = (nbuf[4] << 4) | (nbuf[5]);
2541 	  output[3] = (nbuf[6] << 4) | (nbuf[7]);
2542 	}
2543     }
2544   return size;
2545 }
2546 
2547 /* Find an opcode at the start of *STR_P in the hash table, and set
2548    *STR_P to the first character after the last one read.  */
2549 
2550 static sh_opcode_info *
find_cooked_opcode(char ** str_p)2551 find_cooked_opcode (char **str_p)
2552 {
2553   char *str = *str_p;
2554   unsigned char *op_start;
2555   unsigned char *op_end;
2556   char name[20];
2557   unsigned int nlen = 0;
2558 
2559   /* Drop leading whitespace.  */
2560   while (*str == ' ')
2561     str++;
2562 
2563   /* Find the op code end.
2564      The pre-processor will eliminate whitespace in front of
2565      any '@' after the first argument; we may be called from
2566      assemble_ppi, so the opcode might be terminated by an '@'.  */
2567   for (op_start = op_end = (unsigned char *) str;
2568        *op_end
2569        && nlen < sizeof (name) - 1
2570        && !is_end_of_line[*op_end] && *op_end != ' ' && *op_end != '@';
2571        op_end++)
2572     {
2573       unsigned char c = op_start[nlen];
2574 
2575       /* The machine independent code will convert CMP/EQ into cmp/EQ
2576 	 because it thinks the '/' is the end of the symbol.  Moreover,
2577 	 all but the first sub-insn is a parallel processing insn won't
2578 	 be capitalized.  Instead of hacking up the machine independent
2579 	 code, we just deal with it here.  */
2580       c = TOLOWER (c);
2581       name[nlen] = c;
2582       nlen++;
2583     }
2584 
2585   name[nlen] = 0;
2586   *str_p = (char *) op_end;
2587 
2588   if (nlen == 0)
2589     as_bad (_("can't find opcode "));
2590 
2591   return (sh_opcode_info *) hash_find (opcode_hash_control, name);
2592 }
2593 
2594 /* Assemble a parallel processing insn.  */
2595 #define DDT_BASE 0xf000 /* Base value for double data transfer insns */
2596 
2597 static unsigned int
assemble_ppi(char * op_end,sh_opcode_info * opcode)2598 assemble_ppi (char *op_end, sh_opcode_info *opcode)
2599 {
2600   int movx = 0;
2601   int movy = 0;
2602   int cond = 0;
2603   int field_b = 0;
2604   char *output;
2605   int move_code;
2606   unsigned int size;
2607 
2608   for (;;)
2609     {
2610       sh_operand_info operand[3];
2611 
2612       /* Some insn ignore one or more register fields, e.g. psts machl,a0.
2613 	 Make sure we encode a defined insn pattern.  */
2614       reg_x = 0;
2615       reg_y = 0;
2616       reg_n = 0;
2617 
2618       if (opcode->arg[0] != A_END)
2619 	op_end = get_operands (opcode, op_end, operand);
2620     try_another_opcode:
2621       opcode = get_specific (opcode, operand);
2622       if (opcode == 0)
2623 	{
2624 	  /* Couldn't find an opcode which matched the operands.  */
2625 	  char *where = frag_more (2);
2626 	  size = 2;
2627 
2628 	  where[0] = 0x0;
2629 	  where[1] = 0x0;
2630 	  as_bad (_("invalid operands for opcode"));
2631 	  return size;
2632 	}
2633 
2634       if (opcode->nibbles[0] != PPI)
2635 	as_bad (_("insn can't be combined with parallel processing insn"));
2636 
2637       switch (opcode->nibbles[1])
2638 	{
2639 
2640 	case NOPX:
2641 	  if (movx)
2642 	    as_bad (_("multiple movx specifications"));
2643 	  movx = DDT_BASE;
2644 	  break;
2645 	case NOPY:
2646 	  if (movy)
2647 	    as_bad (_("multiple movy specifications"));
2648 	  movy = DDT_BASE;
2649 	  break;
2650 
2651 	case MOVX_NOPY:
2652 	  if (movx)
2653 	    as_bad (_("multiple movx specifications"));
2654 	  if ((reg_n < 4 || reg_n > 5)
2655 	      && (reg_n < 0 || reg_n > 1))
2656 	    as_bad (_("invalid movx address register"));
2657 	  if (movy && movy != DDT_BASE)
2658 	    as_bad (_("insn cannot be combined with non-nopy"));
2659 	  movx = ((((reg_n & 1) != 0) << 9)
2660 		  + (((reg_n & 4) == 0) << 8)
2661 		  + (reg_x << 6)
2662 		  + (opcode->nibbles[2] << 4)
2663 		  + opcode->nibbles[3]
2664 		  + DDT_BASE);
2665 	  break;
2666 
2667 	case MOVY_NOPX:
2668 	  if (movy)
2669 	    as_bad (_("multiple movy specifications"));
2670 	  if ((reg_n < 6 || reg_n > 7)
2671 	      && (reg_n < 2 || reg_n > 3))
2672 	    as_bad (_("invalid movy address register"));
2673 	  if (movx && movx != DDT_BASE)
2674 	    as_bad (_("insn cannot be combined with non-nopx"));
2675 	  movy = ((((reg_n & 1) != 0) << 8)
2676 		  + (((reg_n & 4) == 0) << 9)
2677 		  + (reg_y << 6)
2678 		  + (opcode->nibbles[2] << 4)
2679 		  + opcode->nibbles[3]
2680 		  + DDT_BASE);
2681 	  break;
2682 
2683 	case MOVX:
2684 	  if (movx)
2685 	    as_bad (_("multiple movx specifications"));
2686 	  if (movy & 0x2ac)
2687 	    as_bad (_("previous movy requires nopx"));
2688 	  if (reg_n < 4 || reg_n > 5)
2689 	    as_bad (_("invalid movx address register"));
2690 	  if (opcode->nibbles[2] & 8)
2691 	    {
2692 	      if (reg_m == A_A1_NUM)
2693 		movx = 1 << 7;
2694 	      else if (reg_m != A_A0_NUM)
2695 		as_bad (_("invalid movx dsp register"));
2696 	    }
2697 	  else
2698 	    {
2699 	      if (reg_x > 1)
2700 		as_bad (_("invalid movx dsp register"));
2701 	      movx = reg_x << 7;
2702 	    }
2703 	  movx += ((reg_n - 4) << 9) + (opcode->nibbles[2] << 2) + DDT_BASE;
2704 	  break;
2705 
2706 	case MOVY:
2707 	  if (movy)
2708 	    as_bad (_("multiple movy specifications"));
2709 	  if (movx & 0x153)
2710 	    as_bad (_("previous movx requires nopy"));
2711 	  if (opcode->nibbles[2] & 8)
2712 	    {
2713 	      /* Bit 3 in nibbles[2] is intended for bit 4 of the opcode,
2714 		 so add 8 more.  */
2715 	      movy = 8;
2716 	      if (reg_m == A_A1_NUM)
2717 		movy += 1 << 6;
2718 	      else if (reg_m != A_A0_NUM)
2719 		as_bad (_("invalid movy dsp register"));
2720 	    }
2721 	  else
2722 	    {
2723 	      if (reg_y > 1)
2724 		as_bad (_("invalid movy dsp register"));
2725 	      movy = reg_y << 6;
2726 	    }
2727 	  if (reg_n < 6 || reg_n > 7)
2728 	    as_bad (_("invalid movy address register"));
2729 	  movy += ((reg_n - 6) << 8) + opcode->nibbles[2] + DDT_BASE;
2730 	  break;
2731 
2732 	case PSH:
2733 	  if (operand[0].immediate.X_op != O_constant)
2734 	    as_bad (_("dsp immediate shift value not constant"));
2735 	  field_b = ((opcode->nibbles[2] << 12)
2736 		     | (operand[0].immediate.X_add_number & 127) << 4
2737 		     | reg_n);
2738 	  break;
2739 	case PPI3NC:
2740 	  if (cond)
2741 	    {
2742 	      opcode++;
2743 	      goto try_another_opcode;
2744 	    }
2745 	  /* Fall through.  */
2746 	case PPI3:
2747 	  if (field_b)
2748 	    as_bad (_("multiple parallel processing specifications"));
2749 	  field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8)
2750 		     + (reg_x << 6) + (reg_y << 4) + reg_n);
2751 	  switch (opcode->nibbles[4])
2752 	    {
2753 	    case HEX_0:
2754 	    case HEX_XX00:
2755 	    case HEX_00YY:
2756 	      break;
2757 	    case HEX_1:
2758 	    case HEX_4:
2759 	      field_b += opcode->nibbles[4] << 4;
2760 	      break;
2761 	    default:
2762 	      abort ();
2763 	    }
2764 	  break;
2765 	case PDC:
2766 	  if (cond)
2767 	    as_bad (_("multiple condition specifications"));
2768 	  cond = opcode->nibbles[2] << 8;
2769 	  if (*op_end)
2770 	    goto skip_cond_check;
2771 	  break;
2772 	case PPIC:
2773 	  if (field_b)
2774 	    as_bad (_("multiple parallel processing specifications"));
2775 	  field_b = ((opcode->nibbles[2] << 12) + (opcode->nibbles[3] << 8)
2776 		     + cond + (reg_x << 6) + (reg_y << 4) + reg_n);
2777 	  cond = 0;
2778 	  switch (opcode->nibbles[4])
2779 	    {
2780 	    case HEX_0:
2781 	    case HEX_XX00:
2782 	    case HEX_00YY:
2783 	      break;
2784 	    case HEX_1:
2785 	    case HEX_4:
2786 	      field_b += opcode->nibbles[4] << 4;
2787 	      break;
2788 	    default:
2789 	      abort ();
2790 	    }
2791 	  break;
2792 	case PMUL:
2793 	  if (field_b)
2794 	    {
2795 	      if ((field_b & 0xef00) == 0xa100)
2796 		field_b -= 0x8100;
2797 	      /* pclr Dz pmuls Se,Sf,Dg */
2798 	      else if ((field_b & 0xff00) == 0x8d00
2799 		       && (SH_MERGE_ARCH_SET_VALID (valid_arch, arch_sh4al_dsp_up)))
2800 		{
2801 		  valid_arch = SH_MERGE_ARCH_SET (valid_arch, arch_sh4al_dsp_up);
2802 		  field_b -= 0x8cf0;
2803 		}
2804 	      else
2805 		as_bad (_("insn cannot be combined with pmuls"));
2806 	      switch (field_b & 0xf)
2807 		{
2808 		case A_X0_NUM:
2809 		  field_b += 0 - A_X0_NUM;
2810 		  break;
2811 		case A_Y0_NUM:
2812 		  field_b += 1 - A_Y0_NUM;
2813 		  break;
2814 		case A_A0_NUM:
2815 		  field_b += 2 - A_A0_NUM;
2816 		  break;
2817 		case A_A1_NUM:
2818 		  field_b += 3 - A_A1_NUM;
2819 		  break;
2820 		default:
2821 		  as_bad (_("bad combined pmuls output operand"));
2822 		}
2823 		/* Generate warning if the destination register for padd / psub
2824 		   and pmuls is the same ( only for A0 or A1 ).
2825 		   If the last nibble is 1010 then A0 is used in both
2826 		   padd / psub and pmuls. If it is 1111 then A1 is used
2827 		   as destination register in both padd / psub and pmuls.  */
2828 
2829 		if ((((field_b | reg_efg) & 0x000F) == 0x000A)
2830 		    || (((field_b | reg_efg) & 0x000F) == 0x000F))
2831 		  as_warn (_("destination register is same for parallel insns"));
2832 	    }
2833 	  field_b += 0x4000 + reg_efg;
2834 	  break;
2835 	default:
2836 	  abort ();
2837 	}
2838       if (cond)
2839 	{
2840 	  as_bad (_("condition not followed by conditionalizable insn"));
2841 	  cond = 0;
2842 	}
2843       if (! *op_end)
2844 	break;
2845     skip_cond_check:
2846       opcode = find_cooked_opcode (&op_end);
2847       if (opcode == NULL)
2848 	{
2849 	  (as_bad
2850 	   (_("unrecognized characters at end of parallel processing insn")));
2851 	  break;
2852 	}
2853     }
2854 
2855   move_code = movx | movy;
2856   if (field_b)
2857     {
2858       /* Parallel processing insn.  */
2859       unsigned long ppi_code = (movx | movy | 0xf800) << 16 | field_b;
2860 
2861       output = frag_more (4);
2862       size = 4;
2863       if (! target_big_endian)
2864 	{
2865 	  output[3] = ppi_code >> 8;
2866 	  output[2] = ppi_code;
2867 	}
2868       else
2869 	{
2870 	  output[2] = ppi_code >> 8;
2871 	  output[3] = ppi_code;
2872 	}
2873       move_code |= 0xf800;
2874     }
2875   else
2876     {
2877       /* Just a double data transfer.  */
2878       output = frag_more (2);
2879       size = 2;
2880     }
2881   if (! target_big_endian)
2882     {
2883       output[1] = move_code >> 8;
2884       output[0] = move_code;
2885     }
2886   else
2887     {
2888       output[0] = move_code >> 8;
2889       output[1] = move_code;
2890     }
2891   return size;
2892 }
2893 
2894 /* This is the guts of the machine-dependent assembler.  STR points to a
2895    machine dependent instruction.  This function is supposed to emit
2896    the frags/bytes it assembles to.  */
2897 
2898 void
md_assemble(char * str)2899 md_assemble (char *str)
2900 {
2901   char *op_end;
2902   sh_operand_info operand[3];
2903   sh_opcode_info *opcode;
2904   unsigned int size = 0;
2905   char *initial_str = str;
2906 
2907 #ifdef HAVE_SH64
2908   if (sh64_isa_mode == sh64_isa_shmedia)
2909     {
2910       shmedia_md_assemble (str);
2911       return;
2912     }
2913   else
2914     {
2915       /* If we've seen pseudo-directives, make sure any emitted data or
2916 	 frags are marked as data.  */
2917       if (!seen_insn)
2918 	{
2919 	  sh64_update_contents_mark (TRUE);
2920 	  sh64_set_contents_type (CRT_SH5_ISA16);
2921 	}
2922 
2923       seen_insn = TRUE;
2924     }
2925 #endif /* HAVE_SH64 */
2926 
2927   opcode = find_cooked_opcode (&str);
2928   op_end = str;
2929 
2930   if (opcode == NULL)
2931     {
2932       /* The opcode is not in the hash table.
2933 	 This means we definitely have an assembly failure,
2934 	 but the instruction may be valid in another CPU variant.
2935 	 In this case emit something better than 'unknown opcode'.
2936 	 Search the full table in sh-opc.h to check. */
2937 
2938       char *name = initial_str;
2939       int name_length = 0;
2940       const sh_opcode_info *op;
2941       int found = 0;
2942 
2943       /* identify opcode in string */
2944       while (ISSPACE (*name))
2945 	{
2946 	  name++;
2947 	}
2948       while (!ISSPACE (name[name_length]))
2949 	{
2950 	  name_length++;
2951 	}
2952 
2953       /* search for opcode in full list */
2954       for (op = sh_table; op->name; op++)
2955 	{
2956 	  if (strncasecmp (op->name, name, name_length) == 0
2957 	      && op->name[name_length] == '\0')
2958 	    {
2959 	      found = 1;
2960 	      break;
2961 	    }
2962 	}
2963 
2964       if ( found )
2965 	{
2966 	  as_bad (_("opcode not valid for this cpu variant"));
2967 	}
2968       else
2969 	{
2970 	  as_bad (_("unknown opcode"));
2971 	}
2972       return;
2973     }
2974 
2975   if (sh_relax
2976       && ! seg_info (now_seg)->tc_segment_info_data.in_code)
2977     {
2978       /* Output a CODE reloc to tell the linker that the following
2979          bytes are instructions, not data.  */
2980       fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0,
2981 	       BFD_RELOC_SH_CODE);
2982       seg_info (now_seg)->tc_segment_info_data.in_code = 1;
2983     }
2984 
2985   if (opcode->nibbles[0] == PPI)
2986     {
2987       size = assemble_ppi (op_end, opcode);
2988     }
2989   else
2990     {
2991       if (opcode->arg[0] == A_BDISP12
2992 	  || opcode->arg[0] == A_BDISP8)
2993 	{
2994 	  /* Since we skip get_specific here, we have to check & update
2995 	     valid_arch now.  */
2996 	  if (SH_MERGE_ARCH_SET_VALID (valid_arch, opcode->arch))
2997 	    valid_arch = SH_MERGE_ARCH_SET (valid_arch, opcode->arch);
2998 	  else
2999 	    as_bad (_("Delayed branches not available on SH1"));
3000 	  parse_exp (op_end + 1, &operand[0]);
3001 	  build_relax (opcode, &operand[0]);
3002 
3003 	  /* All branches are currently 16 bit.  */
3004 	  size = 2;
3005 	}
3006       else
3007 	{
3008 	  if (opcode->arg[0] == A_END)
3009 	    {
3010 	      /* Ignore trailing whitespace.  If there is any, it has already
3011 		 been compressed to a single space.  */
3012 	      if (*op_end == ' ')
3013 		op_end++;
3014 	    }
3015 	  else
3016 	    {
3017 	      op_end = get_operands (opcode, op_end, operand);
3018 	    }
3019 	  opcode = get_specific (opcode, operand);
3020 
3021 	  if (opcode == 0)
3022 	    {
3023 	      /* Couldn't find an opcode which matched the operands.  */
3024 	      char *where = frag_more (2);
3025 	      size = 2;
3026 
3027 	      where[0] = 0x0;
3028 	      where[1] = 0x0;
3029 	      as_bad (_("invalid operands for opcode"));
3030 	    }
3031 	  else
3032 	    {
3033 	      if (*op_end)
3034 		as_bad (_("excess operands: '%s'"), op_end);
3035 
3036 	      size = build_Mytes (opcode, operand);
3037 	    }
3038 	}
3039     }
3040 
3041   dwarf2_emit_insn (size);
3042 }
3043 
3044 /* This routine is called each time a label definition is seen.  It
3045    emits a BFD_RELOC_SH_LABEL reloc if necessary.  */
3046 
3047 void
sh_frob_label(symbolS * sym)3048 sh_frob_label (symbolS *sym)
3049 {
3050   static fragS *last_label_frag;
3051   static int last_label_offset;
3052 
3053   if (sh_relax
3054       && seg_info (now_seg)->tc_segment_info_data.in_code)
3055     {
3056       int offset;
3057 
3058       offset = frag_now_fix ();
3059       if (frag_now != last_label_frag
3060 	  || offset != last_label_offset)
3061 	{
3062 	  fix_new (frag_now, offset, 2, &abs_symbol, 0, 0, BFD_RELOC_SH_LABEL);
3063 	  last_label_frag = frag_now;
3064 	  last_label_offset = offset;
3065 	}
3066     }
3067 
3068   dwarf2_emit_label (sym);
3069 }
3070 
3071 /* This routine is called when the assembler is about to output some
3072    data.  It emits a BFD_RELOC_SH_DATA reloc if necessary.  */
3073 
3074 void
sh_flush_pending_output(void)3075 sh_flush_pending_output (void)
3076 {
3077   if (sh_relax
3078       && seg_info (now_seg)->tc_segment_info_data.in_code)
3079     {
3080       fix_new (frag_now, frag_now_fix (), 2, &abs_symbol, 0, 0,
3081 	       BFD_RELOC_SH_DATA);
3082       seg_info (now_seg)->tc_segment_info_data.in_code = 0;
3083     }
3084 }
3085 
3086 symbolS *
md_undefined_symbol(char * name ATTRIBUTE_UNUSED)3087 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
3088 {
3089   return 0;
3090 }
3091 
3092 /* Various routines to kill one day.  */
3093 
3094 const char *
md_atof(int type,char * litP,int * sizeP)3095 md_atof (int type, char *litP, int *sizeP)
3096 {
3097   return ieee_md_atof (type, litP, sizeP, target_big_endian);
3098 }
3099 
3100 /* Handle the .uses pseudo-op.  This pseudo-op is used just before a
3101    call instruction.  It refers to a label of the instruction which
3102    loads the register which the call uses.  We use it to generate a
3103    special reloc for the linker.  */
3104 
3105 static void
s_uses(int ignore ATTRIBUTE_UNUSED)3106 s_uses (int ignore ATTRIBUTE_UNUSED)
3107 {
3108   expressionS ex;
3109 
3110   if (! sh_relax)
3111     as_warn (_(".uses pseudo-op seen when not relaxing"));
3112 
3113   expression (&ex);
3114 
3115   if (ex.X_op != O_symbol || ex.X_add_number != 0)
3116     {
3117       as_bad (_("bad .uses format"));
3118       ignore_rest_of_line ();
3119       return;
3120     }
3121 
3122   fix_new_exp (frag_now, frag_now_fix (), 2, &ex, 1, BFD_RELOC_SH_USES);
3123 
3124   demand_empty_rest_of_line ();
3125 }
3126 
3127 enum options
3128 {
3129   OPTION_RELAX = OPTION_MD_BASE,
3130   OPTION_BIG,
3131   OPTION_LITTLE,
3132   OPTION_SMALL,
3133   OPTION_DSP,
3134   OPTION_ISA,
3135   OPTION_RENESAS,
3136   OPTION_ALLOW_REG_PREFIX,
3137 #ifdef HAVE_SH64
3138   OPTION_ABI,
3139   OPTION_NO_MIX,
3140   OPTION_SHCOMPACT_CONST_CRANGE,
3141   OPTION_NO_EXPAND,
3142   OPTION_PT32,
3143 #endif
3144   OPTION_H_TICK_HEX,
3145 #ifdef OBJ_ELF
3146   OPTION_FDPIC,
3147 #endif
3148   OPTION_DUMMY  /* Not used.  This is just here to make it easy to add and subtract options from this enum.  */
3149 };
3150 
3151 const char *md_shortopts = "";
3152 struct option md_longopts[] =
3153 {
3154   {"relax", no_argument, NULL, OPTION_RELAX},
3155   {"big", no_argument, NULL, OPTION_BIG},
3156   {"little", no_argument, NULL, OPTION_LITTLE},
3157   /* The next two switches are here because the
3158      generic parts of the linker testsuite uses them.  */
3159   {"EB", no_argument, NULL, OPTION_BIG},
3160   {"EL", no_argument, NULL, OPTION_LITTLE},
3161   {"small", no_argument, NULL, OPTION_SMALL},
3162   {"dsp", no_argument, NULL, OPTION_DSP},
3163   {"isa", required_argument, NULL, OPTION_ISA},
3164   {"renesas", no_argument, NULL, OPTION_RENESAS},
3165   {"allow-reg-prefix", no_argument, NULL, OPTION_ALLOW_REG_PREFIX},
3166 
3167 #ifdef HAVE_SH64
3168   {"abi",                    required_argument, NULL, OPTION_ABI},
3169   {"no-mix",                 no_argument, NULL, OPTION_NO_MIX},
3170   {"shcompact-const-crange", no_argument, NULL, OPTION_SHCOMPACT_CONST_CRANGE},
3171   {"no-expand",              no_argument, NULL, OPTION_NO_EXPAND},
3172   {"expand-pt32",            no_argument, NULL, OPTION_PT32},
3173 #endif /* HAVE_SH64 */
3174   { "h-tick-hex", no_argument,	      NULL, OPTION_H_TICK_HEX  },
3175 
3176 #ifdef OBJ_ELF
3177   {"fdpic", no_argument, NULL, OPTION_FDPIC},
3178 #endif
3179 
3180   {NULL, no_argument, NULL, 0}
3181 };
3182 size_t md_longopts_size = sizeof (md_longopts);
3183 
3184 int
md_parse_option(int c,const char * arg ATTRIBUTE_UNUSED)3185 md_parse_option (int c, const char *arg ATTRIBUTE_UNUSED)
3186 {
3187   switch (c)
3188     {
3189     case OPTION_RELAX:
3190       sh_relax = 1;
3191       break;
3192 
3193     case OPTION_BIG:
3194       target_big_endian = 1;
3195       break;
3196 
3197     case OPTION_LITTLE:
3198       target_big_endian = 0;
3199       break;
3200 
3201     case OPTION_SMALL:
3202       sh_small = 1;
3203       break;
3204 
3205     case OPTION_DSP:
3206       preset_target_arch = arch_sh_up & ~(arch_sh_sp_fpu|arch_sh_dp_fpu);
3207       break;
3208 
3209     case OPTION_RENESAS:
3210       dont_adjust_reloc_32 = 1;
3211       break;
3212 
3213     case OPTION_ALLOW_REG_PREFIX:
3214       allow_dollar_register_prefix = 1;
3215       break;
3216 
3217     case OPTION_ISA:
3218       if (strcasecmp (arg, "dsp") == 0)
3219 	preset_target_arch = arch_sh_up & ~(arch_sh_sp_fpu|arch_sh_dp_fpu);
3220       else if (strcasecmp (arg, "fp") == 0)
3221 	preset_target_arch = arch_sh_up & ~arch_sh_has_dsp;
3222       else if (strcasecmp (arg, "any") == 0)
3223 	preset_target_arch = arch_sh_up;
3224 #ifdef HAVE_SH64
3225       else if (strcasecmp (arg, "shmedia") == 0)
3226 	{
3227 	  if (sh64_isa_mode == sh64_isa_shcompact)
3228 	    as_bad (_("Invalid combination: --isa=SHcompact with --isa=SHmedia"));
3229 	  sh64_isa_mode = sh64_isa_shmedia;
3230 	}
3231       else if (strcasecmp (arg, "shcompact") == 0)
3232 	{
3233 	  if (sh64_isa_mode == sh64_isa_shmedia)
3234 	    as_bad (_("Invalid combination: --isa=SHmedia with --isa=SHcompact"));
3235 	  if (sh64_abi == sh64_abi_64)
3236 	    as_bad (_("Invalid combination: --abi=64 with --isa=SHcompact"));
3237 	  sh64_isa_mode = sh64_isa_shcompact;
3238 	}
3239 #endif /* HAVE_SH64 */
3240       else
3241 	{
3242 	  extern const bfd_arch_info_type bfd_sh_arch;
3243 	  bfd_arch_info_type const *bfd_arch = &bfd_sh_arch;
3244 
3245 	  preset_target_arch = 0;
3246 	  for (; bfd_arch; bfd_arch=bfd_arch->next)
3247 	    {
3248 	      int len = strlen(bfd_arch->printable_name);
3249 
3250 	      if (bfd_arch->mach == bfd_mach_sh5)
3251 		continue;
3252 
3253 	      if (strncasecmp (bfd_arch->printable_name, arg, len) != 0)
3254 		continue;
3255 
3256 	      if (arg[len] == '\0')
3257 		preset_target_arch =
3258 		  sh_get_arch_from_bfd_mach (bfd_arch->mach);
3259 	      else if (strcasecmp(&arg[len], "-up") == 0)
3260 		preset_target_arch =
3261 		  sh_get_arch_up_from_bfd_mach (bfd_arch->mach);
3262 	      else
3263 		continue;
3264 	      break;
3265 	    }
3266 
3267 	  if (!preset_target_arch)
3268 	    as_bad (_("Invalid argument to --isa option: %s"), arg);
3269 	}
3270       break;
3271 
3272 #ifdef HAVE_SH64
3273     case OPTION_ABI:
3274       if (strcmp (arg, "32") == 0)
3275 	{
3276 	  if (sh64_abi == sh64_abi_64)
3277 	    as_bad (_("Invalid combination: --abi=32 with --abi=64"));
3278 	  sh64_abi = sh64_abi_32;
3279 	}
3280       else if (strcmp (arg, "64") == 0)
3281 	{
3282 	  if (sh64_abi == sh64_abi_32)
3283 	    as_bad (_("Invalid combination: --abi=64 with --abi=32"));
3284 	  if (sh64_isa_mode == sh64_isa_shcompact)
3285 	    as_bad (_("Invalid combination: --isa=SHcompact with --abi=64"));
3286 	  sh64_abi = sh64_abi_64;
3287 	}
3288       else
3289 	as_bad (_("Invalid argument to --abi option: %s"), arg);
3290       break;
3291 
3292     case OPTION_NO_MIX:
3293       sh64_mix = FALSE;
3294       break;
3295 
3296     case OPTION_SHCOMPACT_CONST_CRANGE:
3297       sh64_shcompact_const_crange = TRUE;
3298       break;
3299 
3300     case OPTION_NO_EXPAND:
3301       sh64_expand = FALSE;
3302       break;
3303 
3304     case OPTION_PT32:
3305       sh64_pt32 = TRUE;
3306       break;
3307 #endif /* HAVE_SH64 */
3308 
3309     case OPTION_H_TICK_HEX:
3310       enable_h_tick_hex = 1;
3311       break;
3312 
3313 #ifdef OBJ_ELF
3314     case OPTION_FDPIC:
3315       sh_fdpic = TRUE;
3316       break;
3317 #endif /* OBJ_ELF */
3318 
3319     default:
3320       return 0;
3321     }
3322 
3323   return 1;
3324 }
3325 
3326 void
md_show_usage(FILE * stream)3327 md_show_usage (FILE *stream)
3328 {
3329   fprintf (stream, _("\
3330 SH options:\n\
3331 --little		generate little endian code\n\
3332 --big			generate big endian code\n\
3333 --relax			alter jump instructions for long displacements\n\
3334 --renesas		disable optimization with section symbol for\n\
3335 			compatibility with Renesas assembler.\n\
3336 --small			align sections to 4 byte boundaries, not 16\n\
3337 --dsp			enable sh-dsp insns, and disable floating-point ISAs.\n\
3338 --allow-reg-prefix	allow '$' as a register name prefix.\n\
3339 --isa=[any		use most appropriate isa\n\
3340     | dsp               same as '-dsp'\n\
3341     | fp"));
3342   {
3343     extern const bfd_arch_info_type bfd_sh_arch;
3344     bfd_arch_info_type const *bfd_arch = &bfd_sh_arch;
3345 
3346     for (; bfd_arch; bfd_arch=bfd_arch->next)
3347       if (bfd_arch->mach != bfd_mach_sh5)
3348 	{
3349 	  fprintf (stream, "\n    | %s", bfd_arch->printable_name);
3350 	  fprintf (stream, "\n    | %s-up", bfd_arch->printable_name);
3351 	}
3352   }
3353   fprintf (stream, "]\n");
3354 #ifdef HAVE_SH64
3355   fprintf (stream, _("\
3356 --isa=[shmedia		set as the default instruction set for SH64\n\
3357     | SHmedia\n\
3358     | shcompact\n\
3359     | SHcompact]\n"));
3360   fprintf (stream, _("\
3361 --abi=[32|64]		set size of expanded SHmedia operands and object\n\
3362 			file type\n\
3363 --shcompact-const-crange  emit code-range descriptors for constants in\n\
3364 			SHcompact code sections\n\
3365 --no-mix		disallow SHmedia code in the same section as\n\
3366 			constants and SHcompact code\n\
3367 --no-expand		do not expand MOVI, PT, PTA or PTB instructions\n\
3368 --expand-pt32		with -abi=64, expand PT, PTA and PTB instructions\n\
3369 			to 32 bits only\n"));
3370 #endif /* HAVE_SH64 */
3371 #ifdef OBJ_ELF
3372   fprintf (stream, _("\
3373 --fdpic			generate an FDPIC object file\n"));
3374 #endif /* OBJ_ELF */
3375 }
3376 
3377 /* This struct is used to pass arguments to sh_count_relocs through
3378    bfd_map_over_sections.  */
3379 
3380 struct sh_count_relocs
3381 {
3382   /* Symbol we are looking for.  */
3383   symbolS *sym;
3384   /* Count of relocs found.  */
3385   int count;
3386 };
3387 
3388 /* Count the number of fixups in a section which refer to a particular
3389    symbol.  This is called via bfd_map_over_sections.  */
3390 
3391 static void
sh_count_relocs(bfd * abfd ATTRIBUTE_UNUSED,segT sec,void * data)3392 sh_count_relocs (bfd *abfd ATTRIBUTE_UNUSED, segT sec, void *data)
3393 {
3394   struct sh_count_relocs *info = (struct sh_count_relocs *) data;
3395   segment_info_type *seginfo;
3396   symbolS *sym;
3397   fixS *fix;
3398 
3399   seginfo = seg_info (sec);
3400   if (seginfo == NULL)
3401     return;
3402 
3403   sym = info->sym;
3404   for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next)
3405     {
3406       if (fix->fx_addsy == sym)
3407 	{
3408 	  ++info->count;
3409 	  fix->fx_tcbit = 1;
3410 	}
3411     }
3412 }
3413 
3414 /* Handle the count relocs for a particular section.
3415    This is called via bfd_map_over_sections.  */
3416 
3417 static void
sh_frob_section(bfd * abfd ATTRIBUTE_UNUSED,segT sec,void * ignore ATTRIBUTE_UNUSED)3418 sh_frob_section (bfd *abfd ATTRIBUTE_UNUSED, segT sec,
3419 		 void *ignore ATTRIBUTE_UNUSED)
3420 {
3421   segment_info_type *seginfo;
3422   fixS *fix;
3423 
3424   seginfo = seg_info (sec);
3425   if (seginfo == NULL)
3426     return;
3427 
3428   for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next)
3429     {
3430       symbolS *sym;
3431 
3432       sym = fix->fx_addsy;
3433       /* Check for a local_symbol.  */
3434       if (sym && sym->bsym == NULL)
3435 	{
3436 	  struct local_symbol *ls = (struct local_symbol *)sym;
3437 	  /* See if it's been converted.  If so, canonicalize.  */
3438 	  if (local_symbol_converted_p (ls))
3439 	    fix->fx_addsy = local_symbol_get_real_symbol (ls);
3440 	}
3441     }
3442 
3443   for (fix = seginfo->fix_root; fix != NULL; fix = fix->fx_next)
3444     {
3445       symbolS *sym;
3446       bfd_vma val;
3447       fixS *fscan;
3448       struct sh_count_relocs info;
3449 
3450       if (fix->fx_r_type != BFD_RELOC_SH_USES)
3451 	continue;
3452 
3453       /* The BFD_RELOC_SH_USES reloc should refer to a defined local
3454 	 symbol in the same section.  */
3455       sym = fix->fx_addsy;
3456       if (sym == NULL
3457 	  || fix->fx_subsy != NULL
3458 	  || fix->fx_addnumber != 0
3459 	  || S_GET_SEGMENT (sym) != sec
3460 	  || S_IS_EXTERNAL (sym))
3461 	{
3462 	  as_warn_where (fix->fx_file, fix->fx_line,
3463 			 _(".uses does not refer to a local symbol in the same section"));
3464 	  continue;
3465 	}
3466 
3467       /* Look through the fixups again, this time looking for one
3468 	 at the same location as sym.  */
3469       val = S_GET_VALUE (sym);
3470       for (fscan = seginfo->fix_root;
3471 	   fscan != NULL;
3472 	   fscan = fscan->fx_next)
3473 	if (val == fscan->fx_frag->fr_address + fscan->fx_where
3474 	    && fscan->fx_r_type != BFD_RELOC_SH_ALIGN
3475 	    && fscan->fx_r_type != BFD_RELOC_SH_CODE
3476 	    && fscan->fx_r_type != BFD_RELOC_SH_DATA
3477 	    && fscan->fx_r_type != BFD_RELOC_SH_LABEL)
3478 	  break;
3479       if (fscan == NULL)
3480 	{
3481 	  as_warn_where (fix->fx_file, fix->fx_line,
3482 			 _("can't find fixup pointed to by .uses"));
3483 	  continue;
3484 	}
3485 
3486       if (fscan->fx_tcbit)
3487 	{
3488 	  /* We've already done this one.  */
3489 	  continue;
3490 	}
3491 
3492       /* The variable fscan should also be a fixup to a local symbol
3493 	 in the same section.  */
3494       sym = fscan->fx_addsy;
3495       if (sym == NULL
3496 	  || fscan->fx_subsy != NULL
3497 	  || fscan->fx_addnumber != 0
3498 	  || S_GET_SEGMENT (sym) != sec
3499 	  || S_IS_EXTERNAL (sym))
3500 	{
3501 	  as_warn_where (fix->fx_file, fix->fx_line,
3502 			 _(".uses target does not refer to a local symbol in the same section"));
3503 	  continue;
3504 	}
3505 
3506       /* Now we look through all the fixups of all the sections,
3507 	 counting the number of times we find a reference to sym.  */
3508       info.sym = sym;
3509       info.count = 0;
3510       bfd_map_over_sections (stdoutput, sh_count_relocs, &info);
3511 
3512       if (info.count < 1)
3513 	abort ();
3514 
3515       /* Generate a BFD_RELOC_SH_COUNT fixup at the location of sym.
3516 	 We have already adjusted the value of sym to include the
3517 	 fragment address, so we undo that adjustment here.  */
3518       subseg_change (sec, 0);
3519       fix_new (fscan->fx_frag,
3520 	       S_GET_VALUE (sym) - fscan->fx_frag->fr_address,
3521 	       4, &abs_symbol, info.count, 0, BFD_RELOC_SH_COUNT);
3522     }
3523 }
3524 
3525 /* This function is called after the symbol table has been completed,
3526    but before the relocs or section contents have been written out.
3527    If we have seen any .uses pseudo-ops, they point to an instruction
3528    which loads a register with the address of a function.  We look
3529    through the fixups to find where the function address is being
3530    loaded from.  We then generate a COUNT reloc giving the number of
3531    times that function address is referred to.  The linker uses this
3532    information when doing relaxing, to decide when it can eliminate
3533    the stored function address entirely.  */
3534 
3535 void
sh_frob_file(void)3536 sh_frob_file (void)
3537 {
3538 #ifdef HAVE_SH64
3539   shmedia_frob_file_before_adjust ();
3540 #endif
3541 
3542   if (! sh_relax)
3543     return;
3544 
3545   bfd_map_over_sections (stdoutput, sh_frob_section, NULL);
3546 }
3547 
3548 /* Called after relaxing.  Set the correct sizes of the fragments, and
3549    create relocs so that md_apply_fix will fill in the correct values.  */
3550 
3551 void
md_convert_frag(bfd * headers ATTRIBUTE_UNUSED,segT seg,fragS * fragP)3552 md_convert_frag (bfd *headers ATTRIBUTE_UNUSED, segT seg, fragS *fragP)
3553 {
3554   int donerelax = 0;
3555 
3556   switch (fragP->fr_subtype)
3557     {
3558     case C (COND_JUMP, COND8):
3559     case C (COND_JUMP_DELAY, COND8):
3560       subseg_change (seg, 0);
3561       fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
3562 	       1, BFD_RELOC_SH_PCDISP8BY2);
3563       fragP->fr_fix += 2;
3564       fragP->fr_var = 0;
3565       break;
3566 
3567     case C (UNCOND_JUMP, UNCOND12):
3568       subseg_change (seg, 0);
3569       fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
3570 	       1, BFD_RELOC_SH_PCDISP12BY2);
3571       fragP->fr_fix += 2;
3572       fragP->fr_var = 0;
3573       break;
3574 
3575     case C (UNCOND_JUMP, UNCOND32):
3576     case C (UNCOND_JUMP, UNDEF_WORD_DISP):
3577       if (fragP->fr_symbol == NULL)
3578 	as_bad_where (fragP->fr_file, fragP->fr_line,
3579 		      _("displacement overflows 12-bit field"));
3580       else if (S_IS_DEFINED (fragP->fr_symbol))
3581 	as_bad_where (fragP->fr_file, fragP->fr_line,
3582 		      _("displacement to defined symbol %s overflows 12-bit field"),
3583 		      S_GET_NAME (fragP->fr_symbol));
3584       else
3585 	as_bad_where (fragP->fr_file, fragP->fr_line,
3586 		      _("displacement to undefined symbol %s overflows 12-bit field"),
3587 		      S_GET_NAME (fragP->fr_symbol));
3588       /* Stabilize this frag, so we don't trip an assert.  */
3589       fragP->fr_fix += fragP->fr_var;
3590       fragP->fr_var = 0;
3591       break;
3592 
3593     case C (COND_JUMP, COND12):
3594     case C (COND_JUMP_DELAY, COND12):
3595       /* A bcond won't fit, so turn it into a b!cond; bra disp; nop.  */
3596       /* I found that a relax failure for gcc.c-torture/execute/930628-1.c
3597 	 was due to gas incorrectly relaxing an out-of-range conditional
3598 	 branch with delay slot.  It turned:
3599                      bf.s    L6              (slot mov.l   r12,@(44,r0))
3600          into:
3601 
3602 2c:  8f 01 a0 8b     bf.s    32 <_main+32>   (slot bra       L6)
3603 30:  00 09           nop
3604 32:  10 cb           mov.l   r12,@(44,r0)
3605          Therefore, branches with delay slots have to be handled
3606 	 differently from ones without delay slots.  */
3607       {
3608 	unsigned char *buffer =
3609 	  (unsigned char *) (fragP->fr_fix + fragP->fr_literal);
3610 	int highbyte = target_big_endian ? 0 : 1;
3611 	int lowbyte = target_big_endian ? 1 : 0;
3612 	int delay = fragP->fr_subtype == C (COND_JUMP_DELAY, COND12);
3613 
3614 	/* Toggle the true/false bit of the bcond.  */
3615 	buffer[highbyte] ^= 0x2;
3616 
3617 	/* If this is a delayed branch, we may not put the bra in the
3618 	   slot.  So we change it to a non-delayed branch, like that:
3619 	   b! cond slot_label; bra disp; slot_label: slot_insn
3620 	   ??? We should try if swapping the conditional branch and
3621 	   its delay-slot insn already makes the branch reach.  */
3622 
3623 	/* Build a relocation to six / four bytes farther on.  */
3624 	subseg_change (seg, 0);
3625 	fix_new (fragP, fragP->fr_fix, 2, section_symbol (seg),
3626 		 fragP->fr_address + fragP->fr_fix + (delay ? 4 : 6),
3627 		 1, BFD_RELOC_SH_PCDISP8BY2);
3628 
3629 	/* Set up a jump instruction.  */
3630 	buffer[highbyte + 2] = 0xa0;
3631 	buffer[lowbyte + 2] = 0;
3632 	fix_new (fragP, fragP->fr_fix + 2, 2, fragP->fr_symbol,
3633 		 fragP->fr_offset, 1, BFD_RELOC_SH_PCDISP12BY2);
3634 
3635 	if (delay)
3636 	  {
3637 	    buffer[highbyte] &= ~0x4; /* Removes delay slot from branch.  */
3638 	    fragP->fr_fix += 4;
3639 	  }
3640 	else
3641 	  {
3642 	    /* Fill in a NOP instruction.  */
3643 	    buffer[highbyte + 4] = 0x0;
3644 	    buffer[lowbyte + 4] = 0x9;
3645 
3646 	    fragP->fr_fix += 6;
3647 	  }
3648 	fragP->fr_var = 0;
3649 	donerelax = 1;
3650       }
3651       break;
3652 
3653     case C (COND_JUMP, COND32):
3654     case C (COND_JUMP_DELAY, COND32):
3655     case C (COND_JUMP, UNDEF_WORD_DISP):
3656     case C (COND_JUMP_DELAY, UNDEF_WORD_DISP):
3657       if (fragP->fr_symbol == NULL)
3658 	as_bad_where (fragP->fr_file, fragP->fr_line,
3659 		      _("displacement overflows 8-bit field"));
3660       else if (S_IS_DEFINED (fragP->fr_symbol))
3661 	as_bad_where (fragP->fr_file, fragP->fr_line,
3662 		      _("displacement to defined symbol %s overflows 8-bit field"),
3663 		      S_GET_NAME (fragP->fr_symbol));
3664       else
3665 	as_bad_where (fragP->fr_file, fragP->fr_line,
3666 		      _("displacement to undefined symbol %s overflows 8-bit field "),
3667 		      S_GET_NAME (fragP->fr_symbol));
3668       /* Stabilize this frag, so we don't trip an assert.  */
3669       fragP->fr_fix += fragP->fr_var;
3670       fragP->fr_var = 0;
3671       break;
3672 
3673     default:
3674 #ifdef HAVE_SH64
3675       shmedia_md_convert_frag (headers, seg, fragP, TRUE);
3676 #else
3677       abort ();
3678 #endif
3679     }
3680 
3681   if (donerelax && !sh_relax)
3682     as_warn_where (fragP->fr_file, fragP->fr_line,
3683 		   _("overflow in branch to %s; converted into longer instruction sequence"),
3684 		   (fragP->fr_symbol != NULL
3685 		    ? S_GET_NAME (fragP->fr_symbol)
3686 		    : ""));
3687 }
3688 
3689 valueT
md_section_align(segT seg ATTRIBUTE_UNUSED,valueT size)3690 md_section_align (segT seg ATTRIBUTE_UNUSED, valueT size)
3691 {
3692 #ifdef OBJ_ELF
3693   return size;
3694 #else /* ! OBJ_ELF */
3695   return ((size + (1 << bfd_get_section_alignment (stdoutput, seg)) - 1)
3696 	  & -(1 << bfd_get_section_alignment (stdoutput, seg)));
3697 #endif /* ! OBJ_ELF */
3698 }
3699 
3700 /* This static variable is set by s_uacons to tell sh_cons_align that
3701    the expression does not need to be aligned.  */
3702 
3703 static int sh_no_align_cons = 0;
3704 
3705 /* This handles the unaligned space allocation pseudo-ops, such as
3706    .uaword.  .uaword is just like .word, but the value does not need
3707    to be aligned.  */
3708 
3709 static void
s_uacons(int bytes)3710 s_uacons (int bytes)
3711 {
3712   /* Tell sh_cons_align not to align this value.  */
3713   sh_no_align_cons = 1;
3714   cons (bytes);
3715 }
3716 
3717 /* If a .word, et. al., pseud-op is seen, warn if the value is not
3718    aligned correctly.  Note that this can cause warnings to be issued
3719    when assembling initialized structured which were declared with the
3720    packed attribute.  FIXME: Perhaps we should require an option to
3721    enable this warning?  */
3722 
3723 void
sh_cons_align(int nbytes)3724 sh_cons_align (int nbytes)
3725 {
3726   int nalign;
3727 
3728   if (sh_no_align_cons)
3729     {
3730       /* This is an unaligned pseudo-op.  */
3731       sh_no_align_cons = 0;
3732       return;
3733     }
3734 
3735   nalign = 0;
3736   while ((nbytes & 1) == 0)
3737     {
3738       ++nalign;
3739       nbytes >>= 1;
3740     }
3741 
3742   if (nalign == 0)
3743     return;
3744 
3745   if (now_seg == absolute_section)
3746     {
3747       if ((abs_section_offset & ((1 << nalign) - 1)) != 0)
3748 	as_warn (_("misaligned data"));
3749       return;
3750     }
3751 
3752   frag_var (rs_align_test, 1, 1, (relax_substateT) 0,
3753 	    (symbolS *) NULL, (offsetT) nalign, (char *) NULL);
3754 
3755   record_alignment (now_seg, nalign);
3756 }
3757 
3758 /* When relaxing, we need to output a reloc for any .align directive
3759    that requests alignment to a four byte boundary or larger.  This is
3760    also where we check for misaligned data.  */
3761 
3762 void
sh_handle_align(fragS * frag)3763 sh_handle_align (fragS *frag)
3764 {
3765   int bytes = frag->fr_next->fr_address - frag->fr_address - frag->fr_fix;
3766 
3767   if (frag->fr_type == rs_align_code)
3768     {
3769       static const unsigned char big_nop_pattern[] = { 0x00, 0x09 };
3770       static const unsigned char little_nop_pattern[] = { 0x09, 0x00 };
3771 
3772       char *p = frag->fr_literal + frag->fr_fix;
3773 
3774       if (bytes & 1)
3775 	{
3776 	  *p++ = 0;
3777 	  bytes--;
3778 	  frag->fr_fix += 1;
3779 	}
3780 
3781       if (target_big_endian)
3782 	{
3783 	  memcpy (p, big_nop_pattern, sizeof big_nop_pattern);
3784 	  frag->fr_var = sizeof big_nop_pattern;
3785 	}
3786       else
3787 	{
3788 	  memcpy (p, little_nop_pattern, sizeof little_nop_pattern);
3789 	  frag->fr_var = sizeof little_nop_pattern;
3790 	}
3791     }
3792   else if (frag->fr_type == rs_align_test)
3793     {
3794       if (bytes != 0)
3795 	as_bad_where (frag->fr_file, frag->fr_line, _("misaligned data"));
3796     }
3797 
3798   if (sh_relax
3799       && (frag->fr_type == rs_align
3800 	  || frag->fr_type == rs_align_code)
3801       && frag->fr_address + frag->fr_fix > 0
3802       && frag->fr_offset > 1
3803       && now_seg != bss_section)
3804     fix_new (frag, frag->fr_fix, 2, &abs_symbol, frag->fr_offset, 0,
3805 	     BFD_RELOC_SH_ALIGN);
3806 }
3807 
3808 /* See whether the relocation should be resolved locally.  */
3809 
3810 static bfd_boolean
sh_local_pcrel(fixS * fix)3811 sh_local_pcrel (fixS *fix)
3812 {
3813   return (! sh_relax
3814 	  && (fix->fx_r_type == BFD_RELOC_SH_PCDISP8BY2
3815 	      || fix->fx_r_type == BFD_RELOC_SH_PCDISP12BY2
3816 	      || fix->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY2
3817 	      || fix->fx_r_type == BFD_RELOC_SH_PCRELIMM8BY4
3818 	      || fix->fx_r_type == BFD_RELOC_8_PCREL
3819 	      || fix->fx_r_type == BFD_RELOC_SH_SWITCH16
3820 	      || fix->fx_r_type == BFD_RELOC_SH_SWITCH32));
3821 }
3822 
3823 /* See whether we need to force a relocation into the output file.
3824    This is used to force out switch and PC relative relocations when
3825    relaxing.  */
3826 
3827 int
sh_force_relocation(fixS * fix)3828 sh_force_relocation (fixS *fix)
3829 {
3830   /* These relocations can't make it into a DSO, so no use forcing
3831      them for global symbols.  */
3832   if (sh_local_pcrel (fix))
3833     return 0;
3834 
3835   /* Make sure some relocations get emitted.  */
3836   if (fix->fx_r_type == BFD_RELOC_SH_LOOP_START
3837       || fix->fx_r_type == BFD_RELOC_SH_LOOP_END
3838       || fix->fx_r_type == BFD_RELOC_SH_TLS_GD_32
3839       || fix->fx_r_type == BFD_RELOC_SH_TLS_LD_32
3840       || fix->fx_r_type == BFD_RELOC_SH_TLS_IE_32
3841       || fix->fx_r_type == BFD_RELOC_SH_TLS_LDO_32
3842       || fix->fx_r_type == BFD_RELOC_SH_TLS_LE_32
3843       || generic_force_reloc (fix))
3844     return 1;
3845 
3846   if (! sh_relax)
3847     return 0;
3848 
3849   return (fix->fx_pcrel
3850 	  || SWITCH_TABLE (fix)
3851 	  || fix->fx_r_type == BFD_RELOC_SH_COUNT
3852 	  || fix->fx_r_type == BFD_RELOC_SH_ALIGN
3853 	  || fix->fx_r_type == BFD_RELOC_SH_CODE
3854 	  || fix->fx_r_type == BFD_RELOC_SH_DATA
3855 #ifdef HAVE_SH64
3856 	  || fix->fx_r_type == BFD_RELOC_SH_SHMEDIA_CODE
3857 #endif
3858 	  || fix->fx_r_type == BFD_RELOC_SH_LABEL);
3859 }
3860 
3861 #ifdef OBJ_ELF
3862 bfd_boolean
sh_fix_adjustable(fixS * fixP)3863 sh_fix_adjustable (fixS *fixP)
3864 {
3865   if (fixP->fx_r_type == BFD_RELOC_32_PLT_PCREL
3866       || fixP->fx_r_type == BFD_RELOC_32_GOT_PCREL
3867       || fixP->fx_r_type == BFD_RELOC_SH_GOT20
3868       || fixP->fx_r_type == BFD_RELOC_SH_GOTPC
3869       || fixP->fx_r_type == BFD_RELOC_SH_GOTFUNCDESC
3870       || fixP->fx_r_type == BFD_RELOC_SH_GOTFUNCDESC20
3871       || fixP->fx_r_type == BFD_RELOC_SH_GOTOFFFUNCDESC
3872       || fixP->fx_r_type == BFD_RELOC_SH_GOTOFFFUNCDESC20
3873       || fixP->fx_r_type == BFD_RELOC_SH_FUNCDESC
3874       || ((fixP->fx_r_type == BFD_RELOC_32) && dont_adjust_reloc_32)
3875       || fixP->fx_r_type == BFD_RELOC_RVA)
3876     return 0;
3877 
3878   /* We need the symbol name for the VTABLE entries */
3879   if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
3880       || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
3881     return 0;
3882 
3883   return 1;
3884 }
3885 
3886 void
sh_elf_final_processing(void)3887 sh_elf_final_processing (void)
3888 {
3889   int val;
3890 
3891   /* Set file-specific flags to indicate if this code needs
3892      a processor with the sh-dsp / sh2e ISA to execute.  */
3893 #ifdef HAVE_SH64
3894   /* SH5 and above don't know about the valid_arch arch_sh* bits defined
3895      in sh-opc.h, so check SH64 mode before checking valid_arch.  */
3896   if (sh64_isa_mode != sh64_isa_unspecified)
3897     val = EF_SH5;
3898   else
3899 #elif defined TARGET_SYMBIAN
3900     if (1)
3901       {
3902 	extern int sh_symbian_find_elf_flags (unsigned int);
3903 
3904 	val = sh_symbian_find_elf_flags (valid_arch);
3905       }
3906     else
3907 #endif /* HAVE_SH64 */
3908     val = sh_find_elf_flags (valid_arch);
3909 
3910   elf_elfheader (stdoutput)->e_flags &= ~EF_SH_MACH_MASK;
3911   elf_elfheader (stdoutput)->e_flags |= val;
3912 
3913   if (sh_fdpic)
3914     elf_elfheader (stdoutput)->e_flags |= EF_SH_FDPIC;
3915 }
3916 #endif
3917 
3918 #ifdef TE_UCLINUX
3919 /* Return the target format for uClinux.  */
3920 
3921 const char *
sh_uclinux_target_format(void)3922 sh_uclinux_target_format (void)
3923 {
3924   if (sh_fdpic)
3925     return (!target_big_endian ? "elf32-sh-fdpic" : "elf32-shbig-fdpic");
3926   else
3927     return (!target_big_endian ? "elf32-shl" : "elf32-sh");
3928 }
3929 #endif
3930 
3931 /* Apply fixup FIXP to SIZE-byte field BUF given that VAL is its
3932    assembly-time value.  If we're generating a reloc for FIXP,
3933    see whether the addend should be stored in-place or whether
3934    it should be in an ELF r_addend field.  */
3935 
3936 static void
apply_full_field_fix(fixS * fixP,char * buf,bfd_vma val,int size)3937 apply_full_field_fix (fixS *fixP, char *buf, bfd_vma val, int size)
3938 {
3939   reloc_howto_type *howto;
3940 
3941   if (fixP->fx_addsy != NULL || fixP->fx_pcrel)
3942     {
3943       howto = bfd_reloc_type_lookup (stdoutput, fixP->fx_r_type);
3944       if (howto && !howto->partial_inplace)
3945 	{
3946 	  fixP->fx_addnumber = val;
3947 	  return;
3948 	}
3949     }
3950   md_number_to_chars (buf, val, size);
3951 }
3952 
3953 /* Apply a fixup to the object file.  */
3954 
3955 void
md_apply_fix(fixS * fixP,valueT * valP,segT seg ATTRIBUTE_UNUSED)3956 md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
3957 {
3958   char *buf = fixP->fx_where + fixP->fx_frag->fr_literal;
3959   int lowbyte = target_big_endian ? 1 : 0;
3960   int highbyte = target_big_endian ? 0 : 1;
3961   long val = (long) *valP;
3962   long max, min;
3963   int shift;
3964 
3965   /* A difference between two symbols, the second of which is in the
3966      current section, is transformed in a PC-relative relocation to
3967      the other symbol.  We have to adjust the relocation type here.  */
3968   if (fixP->fx_pcrel)
3969     {
3970 #ifndef HAVE_SH64
3971       /* Safeguard; this must not occur for non-sh64 configurations.  */
3972       gas_assert (fixP->fx_r_type != BFD_RELOC_64);
3973 #endif
3974 
3975       switch (fixP->fx_r_type)
3976 	{
3977 	default:
3978 	  break;
3979 
3980 	case BFD_RELOC_32:
3981 	  fixP->fx_r_type = BFD_RELOC_32_PCREL;
3982 	  break;
3983 
3984 	  /* Currently, we only support 32-bit PCREL relocations.
3985 	     We'd need a new reloc type to handle 16_PCREL, and
3986 	     8_PCREL is already taken for R_SH_SWITCH8, which
3987 	     apparently does something completely different than what
3988 	     we need.  FIXME.  */
3989 	case BFD_RELOC_16:
3990 	  bfd_set_error (bfd_error_bad_value);
3991 	  return;
3992 
3993 	case BFD_RELOC_8:
3994 	  bfd_set_error (bfd_error_bad_value);
3995 	  return;
3996 	}
3997     }
3998 
3999   /* The function adjust_reloc_syms won't convert a reloc against a weak
4000      symbol into a reloc against a section, but bfd_install_relocation
4001      will screw up if the symbol is defined, so we have to adjust val here
4002      to avoid the screw up later.
4003 
4004      For ordinary relocs, this does not happen for ELF, since for ELF,
4005      bfd_install_relocation uses the "special function" field of the
4006      howto, and does not execute the code that needs to be undone, as long
4007      as the special function does not return bfd_reloc_continue.
4008      It can happen for GOT- and PLT-type relocs the way they are
4009      described in elf32-sh.c as they use bfd_elf_generic_reloc, but it
4010      doesn't matter here since those relocs don't use VAL; see below.  */
4011   if (OUTPUT_FLAVOR != bfd_target_elf_flavour
4012       && fixP->fx_addsy != NULL
4013       && S_IS_WEAK (fixP->fx_addsy))
4014     val -= S_GET_VALUE  (fixP->fx_addsy);
4015 
4016   if (SWITCH_TABLE (fixP))
4017     val -= S_GET_VALUE  (fixP->fx_subsy);
4018 
4019   max = min = 0;
4020   shift = 0;
4021   switch (fixP->fx_r_type)
4022     {
4023     case BFD_RELOC_SH_IMM3:
4024       max = 0x7;
4025       * buf = (* buf & 0xf8) | (val & 0x7);
4026       break;
4027     case BFD_RELOC_SH_IMM3U:
4028       max = 0x7;
4029       * buf = (* buf & 0x8f) | ((val & 0x7) << 4);
4030       break;
4031     case BFD_RELOC_SH_DISP12:
4032       max = 0xfff;
4033       buf[lowbyte] = val & 0xff;
4034       buf[highbyte] |= (val >> 8) & 0x0f;
4035       break;
4036     case BFD_RELOC_SH_DISP12BY2:
4037       max = 0xfff;
4038       shift = 1;
4039       buf[lowbyte] = (val >> 1) & 0xff;
4040       buf[highbyte] |= (val >> 9) & 0x0f;
4041       break;
4042     case BFD_RELOC_SH_DISP12BY4:
4043       max = 0xfff;
4044       shift = 2;
4045       buf[lowbyte] = (val >> 2) & 0xff;
4046       buf[highbyte] |= (val >> 10) & 0x0f;
4047       break;
4048     case BFD_RELOC_SH_DISP12BY8:
4049       max = 0xfff;
4050       shift = 3;
4051       buf[lowbyte] = (val >> 3) & 0xff;
4052       buf[highbyte] |= (val >> 11) & 0x0f;
4053       break;
4054     case BFD_RELOC_SH_DISP20:
4055       if (! target_big_endian)
4056 	abort();
4057       max = 0x7ffff;
4058       min = -0x80000;
4059       buf[1] = (buf[1] & 0x0f) | ((val >> 12) & 0xf0);
4060       buf[2] = (val >> 8) & 0xff;
4061       buf[3] = val & 0xff;
4062       break;
4063     case BFD_RELOC_SH_DISP20BY8:
4064       if (!target_big_endian)
4065 	abort();
4066       max = 0x7ffff;
4067       min = -0x80000;
4068       shift = 8;
4069       buf[1] = (buf[1] & 0x0f) | ((val >> 20) & 0xf0);
4070       buf[2] = (val >> 16) & 0xff;
4071       buf[3] = (val >> 8) & 0xff;
4072       break;
4073 
4074     case BFD_RELOC_SH_IMM4:
4075       max = 0xf;
4076       *buf = (*buf & 0xf0) | (val & 0xf);
4077       break;
4078 
4079     case BFD_RELOC_SH_IMM4BY2:
4080       max = 0xf;
4081       shift = 1;
4082       *buf = (*buf & 0xf0) | ((val >> 1) & 0xf);
4083       break;
4084 
4085     case BFD_RELOC_SH_IMM4BY4:
4086       max = 0xf;
4087       shift = 2;
4088       *buf = (*buf & 0xf0) | ((val >> 2) & 0xf);
4089       break;
4090 
4091     case BFD_RELOC_SH_IMM8BY2:
4092       max = 0xff;
4093       shift = 1;
4094       *buf = val >> 1;
4095       break;
4096 
4097     case BFD_RELOC_SH_IMM8BY4:
4098       max = 0xff;
4099       shift = 2;
4100       *buf = val >> 2;
4101       break;
4102 
4103     case BFD_RELOC_8:
4104     case BFD_RELOC_SH_IMM8:
4105       /* Sometimes the 8 bit value is sign extended (e.g., add) and
4106          sometimes it is not (e.g., and).  We permit any 8 bit value.
4107          Note that adding further restrictions may invalidate
4108          reasonable looking assembly code, such as ``and -0x1,r0''.  */
4109       max = 0xff;
4110       min = -0xff;
4111       *buf++ = val;
4112       break;
4113 
4114     case BFD_RELOC_SH_PCRELIMM8BY4:
4115       /* If we are dealing with a known destination ... */
4116       if ((fixP->fx_addsy == NULL || S_IS_DEFINED (fixP->fx_addsy))
4117 	  && (fixP->fx_subsy == NULL || S_IS_DEFINED (fixP->fx_addsy)))
4118       {
4119 	/* Don't silently move the destination due to misalignment.
4120 	   The absolute address is the fragment base plus the offset into
4121 	   the fragment plus the pc relative offset to the label.  */
4122 	if ((fixP->fx_frag->fr_address + fixP->fx_where + val) & 3)
4123 	  as_bad_where (fixP->fx_file, fixP->fx_line,
4124 			_("offset to unaligned destination"));
4125 
4126 	/* The displacement cannot be zero or backward even if aligned.
4127 	   Allow -2 because val has already been adjusted somewhere.  */
4128 	if (val < -2)
4129 	  as_bad_where (fixP->fx_file, fixP->fx_line, _("negative offset"));
4130       }
4131 
4132       /* The lower two bits of the PC are cleared before the
4133          displacement is added in.  We can assume that the destination
4134          is on a 4 byte boundary.  If this instruction is also on a 4
4135          byte boundary, then we want
4136 	   (target - here) / 4
4137 	 and target - here is a multiple of 4.
4138 	 Otherwise, we are on a 2 byte boundary, and we want
4139 	   (target - (here - 2)) / 4
4140 	 and target - here is not a multiple of 4.  Computing
4141 	   (target - (here - 2)) / 4 == (target - here + 2) / 4
4142 	 works for both cases, since in the first case the addition of
4143 	 2 will be removed by the division.  target - here is in the
4144 	 variable val.  */
4145       val = (val + 2) / 4;
4146       if (val & ~0xff)
4147 	as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
4148       buf[lowbyte] = val;
4149       break;
4150 
4151     case BFD_RELOC_SH_PCRELIMM8BY2:
4152       val /= 2;
4153       if (val & ~0xff)
4154 	as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
4155       buf[lowbyte] = val;
4156       break;
4157 
4158     case BFD_RELOC_SH_PCDISP8BY2:
4159       val /= 2;
4160       if (val < -0x80 || val > 0x7f)
4161 	as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
4162       buf[lowbyte] = val;
4163       break;
4164 
4165     case BFD_RELOC_SH_PCDISP12BY2:
4166       val /= 2;
4167       if (val < -0x800 || val > 0x7ff)
4168 	as_bad_where (fixP->fx_file, fixP->fx_line, _("pcrel too far"));
4169       buf[lowbyte] = val & 0xff;
4170       buf[highbyte] |= (val >> 8) & 0xf;
4171       break;
4172 
4173 #ifndef HAVE_SH64
4174     case BFD_RELOC_64:
4175       apply_full_field_fix (fixP, buf, *valP, 8);
4176       break;
4177 #endif
4178 
4179     case BFD_RELOC_32:
4180     case BFD_RELOC_32_PCREL:
4181       apply_full_field_fix (fixP, buf, val, 4);
4182       break;
4183 
4184     case BFD_RELOC_16:
4185       apply_full_field_fix (fixP, buf, val, 2);
4186       break;
4187 
4188     case BFD_RELOC_SH_USES:
4189       /* Pass the value into sh_reloc().  */
4190       fixP->fx_addnumber = val;
4191       break;
4192 
4193     case BFD_RELOC_SH_COUNT:
4194     case BFD_RELOC_SH_ALIGN:
4195     case BFD_RELOC_SH_CODE:
4196     case BFD_RELOC_SH_DATA:
4197     case BFD_RELOC_SH_LABEL:
4198       /* Nothing to do here.  */
4199       break;
4200 
4201     case BFD_RELOC_SH_LOOP_START:
4202     case BFD_RELOC_SH_LOOP_END:
4203 
4204     case BFD_RELOC_VTABLE_INHERIT:
4205     case BFD_RELOC_VTABLE_ENTRY:
4206       fixP->fx_done = 0;
4207       return;
4208 
4209 #ifdef OBJ_ELF
4210     case BFD_RELOC_32_PLT_PCREL:
4211       /* Make the jump instruction point to the address of the operand.  At
4212 	 runtime we merely add the offset to the actual PLT entry.  */
4213       * valP = 0xfffffffc;
4214       val = fixP->fx_offset;
4215       if (fixP->fx_subsy)
4216 	val -= S_GET_VALUE (fixP->fx_subsy);
4217       apply_full_field_fix (fixP, buf, val, 4);
4218       break;
4219 
4220     case BFD_RELOC_SH_GOTPC:
4221       /* This is tough to explain.  We end up with this one if we have
4222          operands that look like "_GLOBAL_OFFSET_TABLE_+[.-.L284]".
4223          The goal here is to obtain the absolute address of the GOT,
4224          and it is strongly preferable from a performance point of
4225          view to avoid using a runtime relocation for this.  There are
4226          cases where you have something like:
4227 
4228          .long	_GLOBAL_OFFSET_TABLE_+[.-.L66]
4229 
4230          and here no correction would be required.  Internally in the
4231          assembler we treat operands of this form as not being pcrel
4232          since the '.' is explicitly mentioned, and I wonder whether
4233          it would simplify matters to do it this way.  Who knows.  In
4234          earlier versions of the PIC patches, the pcrel_adjust field
4235          was used to store the correction, but since the expression is
4236          not pcrel, I felt it would be confusing to do it this way.  */
4237       * valP -= 1;
4238       apply_full_field_fix (fixP, buf, val, 4);
4239       break;
4240 
4241     case BFD_RELOC_SH_TLS_GD_32:
4242     case BFD_RELOC_SH_TLS_LD_32:
4243     case BFD_RELOC_SH_TLS_IE_32:
4244       S_SET_THREAD_LOCAL (fixP->fx_addsy);
4245       /* Fallthrough */
4246     case BFD_RELOC_32_GOT_PCREL:
4247     case BFD_RELOC_SH_GOT20:
4248     case BFD_RELOC_SH_GOTPLT32:
4249     case BFD_RELOC_SH_GOTFUNCDESC:
4250     case BFD_RELOC_SH_GOTFUNCDESC20:
4251     case BFD_RELOC_SH_GOTOFFFUNCDESC:
4252     case BFD_RELOC_SH_GOTOFFFUNCDESC20:
4253     case BFD_RELOC_SH_FUNCDESC:
4254       * valP = 0; /* Fully resolved at runtime.  No addend.  */
4255       apply_full_field_fix (fixP, buf, 0, 4);
4256       break;
4257 
4258     case BFD_RELOC_SH_TLS_LDO_32:
4259     case BFD_RELOC_SH_TLS_LE_32:
4260       S_SET_THREAD_LOCAL (fixP->fx_addsy);
4261       /* Fallthrough */
4262     case BFD_RELOC_32_GOTOFF:
4263     case BFD_RELOC_SH_GOTOFF20:
4264       apply_full_field_fix (fixP, buf, val, 4);
4265       break;
4266 #endif
4267 
4268     default:
4269 #ifdef HAVE_SH64
4270       shmedia_md_apply_fix (fixP, valP);
4271       return;
4272 #else
4273       abort ();
4274 #endif
4275     }
4276 
4277   if (shift != 0)
4278     {
4279       if ((val & ((1 << shift) - 1)) != 0)
4280 	as_bad_where (fixP->fx_file, fixP->fx_line, _("misaligned offset"));
4281       if (val >= 0)
4282 	val >>= shift;
4283       else
4284 	val = ((val >> shift)
4285 	       | ((long) -1 & ~ ((long) -1 >> shift)));
4286     }
4287 
4288   /* Extend sign for 64-bit host.  */
4289   val = ((val & 0xffffffff) ^ 0x80000000) - 0x80000000;
4290   if (max != 0 && (val < min || val > max))
4291     as_bad_where (fixP->fx_file, fixP->fx_line, _("offset out of range"));
4292   else if (max != 0)
4293     /* Stop the generic code from trying to overlow check the value as well.
4294        It may not have the correct value anyway, as we do not store val back
4295        into *valP.  */
4296     fixP->fx_no_overflow = 1;
4297 
4298   if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
4299     fixP->fx_done = 1;
4300 }
4301 
4302 /* Called just before address relaxation.  Return the length
4303    by which a fragment must grow to reach it's destination.  */
4304 
4305 int
md_estimate_size_before_relax(fragS * fragP,segT segment_type)4306 md_estimate_size_before_relax (fragS *fragP, segT segment_type)
4307 {
4308   int what;
4309 
4310   switch (fragP->fr_subtype)
4311     {
4312     default:
4313 #ifdef HAVE_SH64
4314       return shmedia_md_estimate_size_before_relax (fragP, segment_type);
4315 #else
4316       abort ();
4317 #endif
4318 
4319 
4320     case C (UNCOND_JUMP, UNDEF_DISP):
4321       /* Used to be a branch to somewhere which was unknown.  */
4322       if (!fragP->fr_symbol)
4323 	{
4324 	  fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12);
4325 	}
4326       else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
4327 	{
4328 	  fragP->fr_subtype = C (UNCOND_JUMP, UNCOND12);
4329 	}
4330       else
4331 	{
4332 	  fragP->fr_subtype = C (UNCOND_JUMP, UNDEF_WORD_DISP);
4333 	}
4334       break;
4335 
4336     case C (COND_JUMP, UNDEF_DISP):
4337     case C (COND_JUMP_DELAY, UNDEF_DISP):
4338       what = GET_WHAT (fragP->fr_subtype);
4339       /* Used to be a branch to somewhere which was unknown.  */
4340       if (fragP->fr_symbol
4341 	  && S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
4342 	{
4343 	  /* Got a symbol and it's defined in this segment, become byte
4344 	     sized - maybe it will fix up.  */
4345 	  fragP->fr_subtype = C (what, COND8);
4346 	}
4347       else if (fragP->fr_symbol)
4348 	{
4349 	  /* Its got a segment, but its not ours, so it will always be long.  */
4350 	  fragP->fr_subtype = C (what, UNDEF_WORD_DISP);
4351 	}
4352       else
4353 	{
4354 	  /* We know the abs value.  */
4355 	  fragP->fr_subtype = C (what, COND8);
4356 	}
4357       break;
4358 
4359     case C (UNCOND_JUMP, UNCOND12):
4360     case C (UNCOND_JUMP, UNCOND32):
4361     case C (UNCOND_JUMP, UNDEF_WORD_DISP):
4362     case C (COND_JUMP, COND8):
4363     case C (COND_JUMP, COND12):
4364     case C (COND_JUMP, COND32):
4365     case C (COND_JUMP, UNDEF_WORD_DISP):
4366     case C (COND_JUMP_DELAY, COND8):
4367     case C (COND_JUMP_DELAY, COND12):
4368     case C (COND_JUMP_DELAY, COND32):
4369     case C (COND_JUMP_DELAY, UNDEF_WORD_DISP):
4370       /* When relaxing a section for the second time, we don't need to
4371 	 do anything besides return the current size.  */
4372       break;
4373     }
4374 
4375   fragP->fr_var = md_relax_table[fragP->fr_subtype].rlx_length;
4376   return fragP->fr_var;
4377 }
4378 
4379 /* Put number into target byte order.  */
4380 
4381 void
md_number_to_chars(char * ptr,valueT use,int nbytes)4382 md_number_to_chars (char *ptr, valueT use, int nbytes)
4383 {
4384 #ifdef HAVE_SH64
4385   /* We might need to set the contents type to data.  */
4386   sh64_flag_output ();
4387 #endif
4388 
4389   if (! target_big_endian)
4390     number_to_chars_littleendian (ptr, use, nbytes);
4391   else
4392     number_to_chars_bigendian (ptr, use, nbytes);
4393 }
4394 
4395 /* This version is used in obj-coff.c eg. for the sh-hms target.  */
4396 
4397 long
md_pcrel_from(fixS * fixP)4398 md_pcrel_from (fixS *fixP)
4399 {
4400   return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address + 2;
4401 }
4402 
4403 long
md_pcrel_from_section(fixS * fixP,segT sec)4404 md_pcrel_from_section (fixS *fixP, segT sec)
4405 {
4406   if (! sh_local_pcrel (fixP)
4407       && fixP->fx_addsy != (symbolS *) NULL
4408       && (generic_force_reloc (fixP)
4409 	  || S_GET_SEGMENT (fixP->fx_addsy) != sec))
4410     {
4411       /* The symbol is undefined (or is defined but not in this section,
4412 	 or we're not sure about it being the final definition).  Let the
4413 	 linker figure it out.  We need to adjust the subtraction of a
4414 	 symbol to the position of the relocated data, though.  */
4415       return fixP->fx_subsy ? fixP->fx_where + fixP->fx_frag->fr_address : 0;
4416     }
4417 
4418   return md_pcrel_from (fixP);
4419 }
4420 
4421 /* Create a reloc.  */
4422 
4423 arelent *
tc_gen_reloc(asection * section ATTRIBUTE_UNUSED,fixS * fixp)4424 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
4425 {
4426   arelent *rel;
4427   bfd_reloc_code_real_type r_type;
4428 
4429   rel = XNEW (arelent);
4430   rel->sym_ptr_ptr = XNEW (asymbol *);
4431   *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
4432   rel->address = fixp->fx_frag->fr_address + fixp->fx_where;
4433 
4434   r_type = fixp->fx_r_type;
4435 
4436   if (SWITCH_TABLE (fixp))
4437     {
4438       *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
4439       rel->addend = rel->address - S_GET_VALUE(fixp->fx_subsy);
4440       if (r_type == BFD_RELOC_16)
4441 	r_type = BFD_RELOC_SH_SWITCH16;
4442       else if (r_type == BFD_RELOC_8)
4443 	r_type = BFD_RELOC_8_PCREL;
4444       else if (r_type == BFD_RELOC_32)
4445 	r_type = BFD_RELOC_SH_SWITCH32;
4446       else
4447 	abort ();
4448     }
4449   else if (r_type == BFD_RELOC_SH_USES)
4450     rel->addend = fixp->fx_addnumber;
4451   else if (r_type == BFD_RELOC_SH_COUNT)
4452     rel->addend = fixp->fx_offset;
4453   else if (r_type == BFD_RELOC_SH_ALIGN)
4454     rel->addend = fixp->fx_offset;
4455   else if (r_type == BFD_RELOC_VTABLE_INHERIT
4456            || r_type == BFD_RELOC_VTABLE_ENTRY)
4457     rel->addend = fixp->fx_offset;
4458   else if (r_type == BFD_RELOC_SH_LOOP_START
4459            || r_type == BFD_RELOC_SH_LOOP_END)
4460     rel->addend = fixp->fx_offset;
4461   else if (r_type == BFD_RELOC_SH_LABEL && fixp->fx_pcrel)
4462     {
4463       rel->addend = 0;
4464       rel->address = rel->addend = fixp->fx_offset;
4465     }
4466 #ifdef HAVE_SH64
4467   else if (shmedia_init_reloc (rel, fixp))
4468     ;
4469 #endif
4470   else
4471     rel->addend = fixp->fx_addnumber;
4472 
4473   rel->howto = bfd_reloc_type_lookup (stdoutput, r_type);
4474 
4475   if (rel->howto == NULL)
4476     {
4477       as_bad_where (fixp->fx_file, fixp->fx_line,
4478 		    _("Cannot represent relocation type %s"),
4479 		    bfd_get_reloc_code_name (r_type));
4480       /* Set howto to a garbage value so that we can keep going.  */
4481       rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32);
4482       gas_assert (rel->howto != NULL);
4483     }
4484 #ifdef OBJ_ELF
4485   else if (rel->howto->type == R_SH_IND12W)
4486     rel->addend += fixp->fx_offset - 4;
4487 #endif
4488 
4489   return rel;
4490 }
4491 
4492 #ifdef OBJ_ELF
4493 inline static char *
sh_end_of_match(char * cont,const char * what)4494 sh_end_of_match (char *cont, const char *what)
4495 {
4496   int len = strlen (what);
4497 
4498   if (strncasecmp (cont, what, strlen (what)) == 0
4499       && ! is_part_of_name (cont[len]))
4500     return cont + len;
4501 
4502   return NULL;
4503 }
4504 
4505 int
sh_parse_name(char const * name,expressionS * exprP,enum expr_mode mode,char * nextcharP)4506 sh_parse_name (char const *name,
4507 	       expressionS *exprP,
4508 	       enum expr_mode mode,
4509 	       char *nextcharP)
4510 {
4511   char *next = input_line_pointer;
4512   char *next_end;
4513   int reloc_type;
4514   segT segment;
4515 
4516   exprP->X_op_symbol = NULL;
4517 
4518   if (strcmp (name, GLOBAL_OFFSET_TABLE_NAME) == 0)
4519     {
4520       if (! GOT_symbol)
4521 	GOT_symbol = symbol_find_or_make (name);
4522 
4523       exprP->X_add_symbol = GOT_symbol;
4524     no_suffix:
4525       /* If we have an absolute symbol or a reg, then we know its
4526 	 value now.  */
4527       segment = S_GET_SEGMENT (exprP->X_add_symbol);
4528       if (mode != expr_defer && segment == absolute_section)
4529 	{
4530 	  exprP->X_op = O_constant;
4531 	  exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol);
4532 	  exprP->X_add_symbol = NULL;
4533 	}
4534       else if (mode != expr_defer && segment == reg_section)
4535 	{
4536 	  exprP->X_op = O_register;
4537 	  exprP->X_add_number = S_GET_VALUE (exprP->X_add_symbol);
4538 	  exprP->X_add_symbol = NULL;
4539 	}
4540       else
4541 	{
4542 	  exprP->X_op = O_symbol;
4543 	  exprP->X_add_number = 0;
4544 	}
4545 
4546       return 1;
4547     }
4548 
4549   exprP->X_add_symbol = symbol_find_or_make (name);
4550 
4551   if (*nextcharP != '@')
4552     goto no_suffix;
4553   else if ((next_end = sh_end_of_match (next + 1, "GOTOFF")))
4554     reloc_type = BFD_RELOC_32_GOTOFF;
4555   else if ((next_end = sh_end_of_match (next + 1, "GOTPLT")))
4556     reloc_type = BFD_RELOC_SH_GOTPLT32;
4557   else if ((next_end = sh_end_of_match (next + 1, "GOT")))
4558     reloc_type = BFD_RELOC_32_GOT_PCREL;
4559   else if ((next_end = sh_end_of_match (next + 1, "PLT")))
4560     reloc_type = BFD_RELOC_32_PLT_PCREL;
4561   else if ((next_end = sh_end_of_match (next + 1, "TLSGD")))
4562     reloc_type = BFD_RELOC_SH_TLS_GD_32;
4563   else if ((next_end = sh_end_of_match (next + 1, "TLSLDM")))
4564     reloc_type = BFD_RELOC_SH_TLS_LD_32;
4565   else if ((next_end = sh_end_of_match (next + 1, "GOTTPOFF")))
4566     reloc_type = BFD_RELOC_SH_TLS_IE_32;
4567   else if ((next_end = sh_end_of_match (next + 1, "TPOFF")))
4568     reloc_type = BFD_RELOC_SH_TLS_LE_32;
4569   else if ((next_end = sh_end_of_match (next + 1, "DTPOFF")))
4570     reloc_type = BFD_RELOC_SH_TLS_LDO_32;
4571   else if ((next_end = sh_end_of_match (next + 1, "PCREL")))
4572     reloc_type = BFD_RELOC_32_PCREL;
4573   else if ((next_end = sh_end_of_match (next + 1, "GOTFUNCDESC")))
4574     reloc_type = BFD_RELOC_SH_GOTFUNCDESC;
4575   else if ((next_end = sh_end_of_match (next + 1, "GOTOFFFUNCDESC")))
4576     reloc_type = BFD_RELOC_SH_GOTOFFFUNCDESC;
4577   else if ((next_end = sh_end_of_match (next + 1, "FUNCDESC")))
4578     reloc_type = BFD_RELOC_SH_FUNCDESC;
4579   else
4580     goto no_suffix;
4581 
4582   *input_line_pointer = *nextcharP;
4583   input_line_pointer = next_end;
4584   *nextcharP = *input_line_pointer;
4585   *input_line_pointer = '\0';
4586 
4587   exprP->X_op = O_PIC_reloc;
4588   exprP->X_add_number = 0;
4589   exprP->X_md = reloc_type;
4590 
4591   return 1;
4592 }
4593 
4594 void
sh_cfi_frame_initial_instructions(void)4595 sh_cfi_frame_initial_instructions (void)
4596 {
4597   cfi_add_CFA_def_cfa (15, 0);
4598 }
4599 
4600 int
sh_regname_to_dw2regnum(char * regname)4601 sh_regname_to_dw2regnum (char *regname)
4602 {
4603   unsigned int regnum = -1;
4604   unsigned int i;
4605   const char *p;
4606   char *q;
4607   static struct { const char *name; int dw2regnum; } regnames[] =
4608     {
4609       { "pr", 17 }, { "t", 18 }, { "gbr", 19 }, { "mach", 20 },
4610       { "macl", 21 }, { "fpul", 23 }
4611     };
4612 
4613   for (i = 0; i < ARRAY_SIZE (regnames); ++i)
4614     if (strcmp (regnames[i].name, regname) == 0)
4615       return regnames[i].dw2regnum;
4616 
4617   if (regname[0] == 'r')
4618     {
4619       p = regname + 1;
4620       regnum = strtoul (p, &q, 10);
4621       if (p == q || *q || regnum >= 16)
4622 	return -1;
4623     }
4624   else if (regname[0] == 'f' && regname[1] == 'r')
4625     {
4626       p = regname + 2;
4627       regnum = strtoul (p, &q, 10);
4628       if (p == q || *q || regnum >= 16)
4629 	return -1;
4630       regnum += 25;
4631     }
4632   else if (regname[0] == 'x' && regname[1] == 'd')
4633     {
4634       p = regname + 2;
4635       regnum = strtoul (p, &q, 10);
4636       if (p == q || *q || regnum >= 8)
4637 	return -1;
4638       regnum += 87;
4639     }
4640   return regnum;
4641 }
4642 #endif /* OBJ_ELF */
4643