Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-mcore.c -- Assemble code for M*Core |
f17c130b AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2005 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
d7f1f2b0 ILT |
18 | along with GAS; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
252b5132 RH |
21 | |
22 | #include <stdio.h> | |
23 | #include "as.h" | |
24 | #include "bfd.h" | |
25 | #include "subsegs.h" | |
26 | #define DEFINE_TABLE | |
27 | #include "../opcodes/mcore-opc.h" | |
3882b010 | 28 | #include "safe-ctype.h" |
252b5132 RH |
29 | #include <string.h> |
30 | ||
31 | #ifdef OBJ_ELF | |
32 | #include "elf/mcore.h" | |
33 | #endif | |
34 | ||
35 | #ifndef streq | |
36 | #define streq(a,b) (strcmp (a, b) == 0) | |
37 | #endif | |
38 | ||
39 | /* Forward declarations for dumb compilers. */ | |
40 | static void mcore_s_literals PARAMS ((int)); | |
5f8075fa | 41 | static void mcore_pool_count PARAMS ((void (*) (int), int)); |
252b5132 RH |
42 | static void mcore_cons PARAMS ((int)); |
43 | static void mcore_float_cons PARAMS ((int)); | |
44 | static void mcore_stringer PARAMS ((int)); | |
bcef92fa | 45 | static void mcore_fill PARAMS ((int)); |
f17c130b | 46 | static int mylog2 PARAMS ((unsigned int)); |
9cac79d3 NC |
47 | static char * parse_reg PARAMS ((char *, unsigned *)); |
48 | static char * parse_creg PARAMS ((char *, unsigned *)); | |
49 | static char * parse_exp PARAMS ((char *, expressionS *)); | |
50 | static char * parse_rt PARAMS ((char *, char **, int, expressionS *)); | |
51 | static char * parse_imm PARAMS ((char *, unsigned *, unsigned, unsigned)); | |
52 | static char * parse_mem PARAMS ((char *, unsigned *, unsigned *, unsigned)); | |
bec50466 | 53 | static char * parse_psrmod PARAMS ((char *, unsigned *)); |
252b5132 RH |
54 | static void make_name PARAMS ((char *, char *, int)); |
55 | static int enter_literal PARAMS ((expressionS *, int)); | |
252b5132 RH |
56 | static void dump_literals PARAMS ((int)); |
57 | static void check_literals PARAMS ((int, int)); | |
58 | static void mcore_s_text PARAMS ((int)); | |
59 | static void mcore_s_data PARAMS ((int)); | |
252b5132 | 60 | static void mcore_s_section PARAMS ((int)); |
16b93d88 NC |
61 | static void mcore_s_bss PARAMS ((int)); |
62 | #ifdef OBJ_ELF | |
63 | static void mcore_s_comm PARAMS ((int)); | |
252b5132 RH |
64 | #endif |
65 | ||
66 | /* Several places in this file insert raw instructions into the | |
67 | object. They should use MCORE_INST_XXX macros to get the opcodes | |
68 | and then use these two macros to crack the MCORE_INST value into | |
69 | the appropriate byte values. */ | |
bec50466 NC |
70 | #define INST_BYTE0(x) (target_big_endian ? (((x) >> 8) & 0xFF) : ((x) & 0xFF)) |
71 | #define INST_BYTE1(x) (target_big_endian ? ((x) & 0xFF) : (((x) >> 8) & 0xFF)) | |
252b5132 RH |
72 | |
73 | const char comment_chars[] = "#/"; | |
74 | const char line_separator_chars[] = ";"; | |
75 | const char line_comment_chars[] = "#/"; | |
76 | ||
77 | const int md_reloc_size = 8; | |
78 | ||
eaa15ab8 | 79 | static int do_jsri2bsr = 0; /* Change here from 1 by Cruess 19 August 97. */ |
252b5132 RH |
80 | static int sifilter_mode = 0; |
81 | ||
82 | const char EXP_CHARS[] = "eE"; | |
83 | ||
eaa15ab8 NC |
84 | /* Chars that mean this number is a floating point constant |
85 | As in 0f12.456 | |
86 | or 0d1.2345e12 */ | |
252b5132 RH |
87 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
88 | ||
89 | #define C(what,length) (((what) << 2) + (length)) | |
90 | #define GET_WHAT(x) ((x >> 2)) | |
91 | ||
92 | /* These are the two types of relaxable instruction */ | |
93 | #define COND_JUMP 1 | |
94 | #define UNCD_JUMP 2 | |
95 | ||
96 | #define UNDEF_DISP 0 | |
93c2a809 AM |
97 | #define DISP12 1 |
98 | #define DISP32 2 | |
99 | #define UNDEF_WORD_DISP 3 | |
252b5132 RH |
100 | |
101 | #define C12_LEN 2 | |
102 | #define C32_LEN 10 /* allow for align */ | |
103 | #define U12_LEN 2 | |
104 | #define U32_LEN 8 /* allow for align */ | |
105 | ||
bec50466 NC |
106 | typedef enum |
107 | { | |
108 | M210, | |
109 | M340 | |
110 | } | |
111 | cpu_type; | |
112 | ||
113 | cpu_type cpu = M340; | |
252b5132 | 114 | |
eaa15ab8 | 115 | /* Initialize the relax table. */ |
e66457fb AM |
116 | const relax_typeS md_relax_table[] = { |
117 | { 0, 0, 0, 0 }, | |
118 | { 0, 0, 0, 0 }, | |
119 | { 0, 0, 0, 0 }, | |
120 | { 0, 0, 0, 0 }, | |
121 | ||
122 | /* COND_JUMP */ | |
123 | { 0, 0, 0, 0 }, /* UNDEF_DISP */ | |
124 | { 2048, -2046, C12_LEN, C(COND_JUMP, DISP32) }, /* DISP12 */ | |
125 | { 0, 0, C32_LEN, 0 }, /* DISP32 */ | |
126 | { 0, 0, C32_LEN, 0 }, /* UNDEF_WORD_DISP */ | |
127 | ||
128 | /* UNCD_JUMP */ | |
5d6255fe KH |
129 | { 0, 0, 0, 0 }, /* UNDEF_DISP */ |
130 | { 2048, -2046, U12_LEN, C(UNCD_JUMP, DISP32) }, /* DISP12 */ | |
131 | { 0, 0, U32_LEN, 0 }, /* DISP32 */ | |
e66457fb AM |
132 | { 0, 0, U32_LEN, 0 } /* UNDEF_WORD_DISP */ |
133 | ||
252b5132 RH |
134 | }; |
135 | ||
eaa15ab8 | 136 | /* Literal pool data structures. */ |
252b5132 RH |
137 | struct literal |
138 | { | |
139 | unsigned short refcnt; | |
140 | unsigned char ispcrel; | |
141 | unsigned char unused; | |
142 | expressionS e; | |
143 | }; | |
144 | ||
145 | #define MAX_POOL_SIZE (1024/4) | |
146 | static struct literal litpool [MAX_POOL_SIZE]; | |
147 | static unsigned poolsize; | |
148 | static unsigned poolnumber; | |
149 | static unsigned long poolspan; | |
150 | ||
151 | /* SPANPANIC: the point at which we get too scared and force a dump | |
152 | of the literal pool, and perhaps put a branch in place. | |
153 | Calculated as: | |
154 | 1024 span of lrw/jmpi/jsri insn (actually span+1) | |
155 | -2 possible alignment at the insn. | |
156 | -2 possible alignment to get the table aligned. | |
157 | -2 an inserted branch around the table. | |
158 | == 1018 | |
159 | at 1018, we might be in trouble. | |
160 | -- so we have to be smaller than 1018 and since we deal with 2-byte | |
161 | instructions, the next good choice is 1016. | |
162 | -- Note we have a test case that fails when we've got 1018 here. */ | |
eaa15ab8 | 163 | #define SPANPANIC (1016) /* 1024 - 1 entry - 2 byte rounding. */ |
252b5132 RH |
164 | #define SPANCLOSE (900) |
165 | #define SPANEXIT (600) | |
eaa15ab8 | 166 | static symbolS * poolsym; /* label for current pool. */ |
252b5132 | 167 | static char poolname[8]; |
eaa15ab8 | 168 | static struct hash_control * opcode_hash_control; /* Opcode mnemonics. */ |
252b5132 RH |
169 | |
170 | /* This table describes all the machine specific pseudo-ops the assembler | |
171 | has to support. The fields are: | |
172 | Pseudo-op name without dot | |
173 | Function to call to execute this pseudo-op | |
eaa15ab8 | 174 | Integer arg to pass to the function. */ |
252b5132 RH |
175 | const pseudo_typeS md_pseudo_table[] = |
176 | { | |
177 | { "export", s_globl, 0 }, | |
178 | { "import", s_ignore, 0 }, | |
179 | { "literals", mcore_s_literals, 0 }, | |
180 | { "page", listing_eject, 0 }, | |
252b5132 RH |
181 | |
182 | /* The following are to intercept the placement of data into the text | |
183 | section (eg addresses for a switch table), so that the space they | |
184 | occupy can be taken into account when deciding whether or not to | |
185 | dump the current literal pool. | |
186 | XXX - currently we do not cope with the .space and .dcb.d directives. */ | |
187 | { "ascii", mcore_stringer, 0 }, | |
188 | { "asciz", mcore_stringer, 1 }, | |
189 | { "byte", mcore_cons, 1 }, | |
190 | { "dc", mcore_cons, 2 }, | |
191 | { "dc.b", mcore_cons, 1 }, | |
bcef92fa | 192 | { "dc.d", mcore_float_cons, 'd'}, |
252b5132 | 193 | { "dc.l", mcore_cons, 4 }, |
bcef92fa | 194 | { "dc.s", mcore_float_cons, 'f'}, |
252b5132 | 195 | { "dc.w", mcore_cons, 2 }, |
bcef92fa | 196 | { "dc.x", mcore_float_cons, 'x'}, |
252b5132 RH |
197 | { "double", mcore_float_cons, 'd'}, |
198 | { "float", mcore_float_cons, 'f'}, | |
199 | { "hword", mcore_cons, 2 }, | |
200 | { "int", mcore_cons, 4 }, | |
201 | { "long", mcore_cons, 4 }, | |
202 | { "octa", mcore_cons, 16 }, | |
203 | { "quad", mcore_cons, 8 }, | |
204 | { "short", mcore_cons, 2 }, | |
205 | { "single", mcore_float_cons, 'f'}, | |
206 | { "string", mcore_stringer, 1 }, | |
207 | { "word", mcore_cons, 2 }, | |
bcef92fa | 208 | { "fill", mcore_fill, 0 }, |
252b5132 RH |
209 | |
210 | /* Allow for the effect of section changes. */ | |
211 | { "text", mcore_s_text, 0 }, | |
212 | { "data", mcore_s_data, 0 }, | |
16b93d88 | 213 | { "bss", mcore_s_bss, 1 }, |
30cdfbed | 214 | #ifdef OBJ_ELF |
16b93d88 NC |
215 | { "comm", mcore_s_comm, 0 }, |
216 | #endif | |
252b5132 RH |
217 | { "section", mcore_s_section, 0 }, |
218 | { "section.s", mcore_s_section, 0 }, | |
219 | { "sect", mcore_s_section, 0 }, | |
220 | { "sect.s", mcore_s_section, 0 }, | |
a75214e5 | 221 | |
252b5132 RH |
222 | { 0, 0, 0 } |
223 | }; | |
224 | ||
225 | static void | |
226 | mcore_s_literals (ignore) | |
aa699a2c | 227 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
228 | { |
229 | dump_literals (0); | |
230 | demand_empty_rest_of_line (); | |
231 | } | |
232 | ||
5f8075fa AM |
233 | /* Perform FUNC (ARG), and track number of bytes added to frag. */ |
234 | ||
252b5132 | 235 | static void |
5f8075fa AM |
236 | mcore_pool_count (func, arg) |
237 | void (*func) PARAMS ((int)); | |
238 | int arg; | |
252b5132 | 239 | { |
5f8075fa AM |
240 | const fragS *curr_frag = frag_now; |
241 | offsetT added = -frag_now_fix_octets (); | |
a75214e5 | 242 | |
5f8075fa | 243 | (*func) (arg); |
a75214e5 | 244 | |
5f8075fa AM |
245 | while (curr_frag != frag_now) |
246 | { | |
247 | added += curr_frag->fr_fix; | |
248 | curr_frag = curr_frag->fr_next; | |
252b5132 | 249 | } |
a75214e5 | 250 | |
5f8075fa AM |
251 | added += frag_now_fix_octets (); |
252 | poolspan += added; | |
253 | } | |
254 | ||
255 | static void | |
256 | mcore_cons (nbytes) | |
257 | int nbytes; | |
258 | { | |
259 | if (now_seg == text_section) | |
260 | mcore_pool_count (cons, nbytes); | |
261 | else | |
262 | cons (nbytes); | |
252b5132 RH |
263 | |
264 | /* In theory we ought to call check_literals (2,0) here in case | |
265 | we need to dump the literal table. We cannot do this however, | |
266 | as the directives that we are intercepting may be being used | |
267 | to build a switch table, and we must not interfere with its | |
a75214e5 | 268 | contents. Instead we cross our fingers and pray... */ |
252b5132 RH |
269 | } |
270 | ||
271 | static void | |
272 | mcore_float_cons (float_type) | |
273 | int float_type; | |
274 | { | |
275 | if (now_seg == text_section) | |
5f8075fa AM |
276 | mcore_pool_count (float_cons, float_type); |
277 | else | |
278 | float_cons (float_type); | |
a75214e5 | 279 | |
252b5132 RH |
280 | /* See the comment in mcore_cons () about calling check_literals. |
281 | It is unlikely that a switch table will be constructed using | |
282 | floating point values, but it is still likely that an indexed | |
283 | table of floating point constants is being created by these | |
284 | directives, so again we must not interfere with their placement. */ | |
285 | } | |
286 | ||
287 | static void | |
288 | mcore_stringer (append_zero) | |
289 | int append_zero; | |
290 | { | |
291 | if (now_seg == text_section) | |
5f8075fa AM |
292 | mcore_pool_count (stringer, append_zero); |
293 | else | |
294 | stringer (append_zero); | |
252b5132 RH |
295 | |
296 | /* We call check_literals here in case a large number of strings are | |
297 | being placed into the text section with a sequence of stringer | |
298 | directives. In theory we could be upsetting something if these | |
299 | strings are actually in an indexed table instead of referenced by | |
300 | individual labels. Let us hope that that never happens. */ | |
301 | check_literals (2, 0); | |
302 | } | |
303 | ||
bcef92fa NC |
304 | static void |
305 | mcore_fill (unused) | |
306 | int unused; | |
307 | { | |
308 | if (now_seg == text_section) | |
5f8075fa AM |
309 | mcore_pool_count (s_fill, unused); |
310 | else | |
311 | s_fill (unused); | |
bcef92fa | 312 | |
4c1102fd | 313 | check_literals (2, 0); |
bcef92fa NC |
314 | } |
315 | ||
16b93d88 NC |
316 | /* Handle the section changing pseudo-ops. These call through to the |
317 | normal implementations, but they dump the literal pool first. */ | |
252b5132 RH |
318 | static void |
319 | mcore_s_text (ignore) | |
320 | int ignore; | |
321 | { | |
322 | dump_literals (0); | |
a75214e5 | 323 | |
16b93d88 NC |
324 | #ifdef OBJ_ELF |
325 | obj_elf_text (ignore); | |
326 | #else | |
252b5132 | 327 | s_text (ignore); |
16b93d88 | 328 | #endif |
252b5132 RH |
329 | } |
330 | ||
331 | static void | |
332 | mcore_s_data (ignore) | |
333 | int ignore; | |
334 | { | |
335 | dump_literals (0); | |
a75214e5 | 336 | |
16b93d88 NC |
337 | #ifdef OBJ_ELF |
338 | obj_elf_data (ignore); | |
339 | #else | |
252b5132 | 340 | s_data (ignore); |
16b93d88 NC |
341 | #endif |
342 | } | |
343 | ||
344 | static void | |
345 | mcore_s_section (ignore) | |
346 | int ignore; | |
347 | { | |
bcef92fa NC |
348 | /* Scan forwards to find the name of the section. If the section |
349 | being switched to is ".line" then this is a DWARF1 debug section | |
67c1ffbe | 350 | which is arbitrarily placed inside generated code. In this case |
bcef92fa NC |
351 | do not dump the literal pool because it is a) inefficient and |
352 | b) would require the generation of extra code to jump around the | |
353 | pool. */ | |
354 | char * ilp = input_line_pointer; | |
355 | ||
3882b010 | 356 | while (*ilp != 0 && ISSPACE (*ilp)) |
bcef92fa NC |
357 | ++ ilp; |
358 | ||
359 | if (strncmp (ilp, ".line", 5) == 0 | |
3882b010 | 360 | && (ISSPACE (ilp[5]) || *ilp == '\n' || *ilp == '\r')) |
bcef92fa NC |
361 | ; |
362 | else | |
363 | dump_literals (0); | |
16b93d88 NC |
364 | |
365 | #ifdef OBJ_ELF | |
366 | obj_elf_section (ignore); | |
367 | #endif | |
368 | #ifdef OBJ_COFF | |
369 | obj_coff_section (ignore); | |
370 | #endif | |
252b5132 RH |
371 | } |
372 | ||
16b93d88 NC |
373 | static void |
374 | mcore_s_bss (needs_align) | |
375 | int needs_align; | |
376 | { | |
377 | dump_literals (0); | |
a75214e5 | 378 | |
16b93d88 NC |
379 | s_lcomm_bytes (needs_align); |
380 | } | |
381 | ||
382 | #ifdef OBJ_ELF | |
383 | static void | |
384 | mcore_s_comm (needs_align) | |
385 | int needs_align; | |
386 | { | |
387 | dump_literals (0); | |
a75214e5 | 388 | |
16b93d88 NC |
389 | obj_elf_common (needs_align); |
390 | } | |
391 | #endif | |
392 | ||
252b5132 | 393 | /* This function is called once, at assembler startup time. This should |
bcef92fa | 394 | set up all the tables, etc that the MD part of the assembler needs. */ |
252b5132 RH |
395 | void |
396 | md_begin () | |
397 | { | |
5ff37431 | 398 | const mcore_opcode_info * opcode; |
252b5132 RH |
399 | char * prev_name = ""; |
400 | ||
401 | opcode_hash_control = hash_new (); | |
402 | ||
403 | /* Insert unique names into hash table */ | |
404 | for (opcode = mcore_table; opcode->name; opcode ++) | |
405 | { | |
5ff37431 | 406 | if (! streq (prev_name, opcode->name)) |
252b5132 RH |
407 | { |
408 | prev_name = opcode->name; | |
409 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); | |
410 | } | |
411 | } | |
412 | } | |
413 | ||
252b5132 RH |
414 | /* Get a log2(val). */ |
415 | static int | |
f17c130b | 416 | mylog2 (val) |
252b5132 RH |
417 | unsigned int val; |
418 | { | |
419 | int log = -1; | |
420 | while (val != 0) | |
421 | { | |
5f8075fa AM |
422 | log ++; |
423 | val >>= 1; | |
252b5132 | 424 | } |
a75214e5 | 425 | |
252b5132 RH |
426 | return log; |
427 | } | |
428 | ||
429 | /* Try to parse a reg name. */ | |
430 | static char * | |
431 | parse_reg (s, reg) | |
432 | char * s; | |
433 | unsigned * reg; | |
434 | { | |
435 | /* Strip leading whitespace. */ | |
3882b010 | 436 | while (ISSPACE (* s)) |
252b5132 | 437 | ++ s; |
a75214e5 | 438 | |
3882b010 | 439 | if (TOLOWER (s[0]) == 'r') |
252b5132 RH |
440 | { |
441 | if (s[1] == '1' && s[2] >= '0' && s[2] <= '5') | |
442 | { | |
443 | *reg = 10 + s[2] - '0'; | |
444 | return s + 3; | |
445 | } | |
a75214e5 | 446 | |
252b5132 RH |
447 | if (s[1] >= '0' && s[1] <= '9') |
448 | { | |
449 | *reg = s[1] - '0'; | |
450 | return s + 2; | |
451 | } | |
452 | } | |
3882b010 L |
453 | else if ( TOLOWER (s[0]) == 's' |
454 | && TOLOWER (s[1]) == 'p' | |
455 | && ! ISALNUM (s[2])) | |
252b5132 RH |
456 | { |
457 | * reg = 0; | |
458 | return s + 2; | |
459 | } | |
a75214e5 | 460 | |
252b5132 RH |
461 | as_bad (_("register expected, but saw '%.6s'"), s); |
462 | return s; | |
463 | } | |
464 | ||
465 | static struct Cregs | |
466 | { | |
467 | char * name; | |
468 | unsigned int crnum; | |
469 | } | |
470 | cregs[] = | |
471 | { | |
472 | { "psr", 0}, | |
473 | { "vbr", 1}, | |
474 | { "epsr", 2}, | |
475 | { "fpsr", 3}, | |
476 | { "epc", 4}, | |
477 | { "fpc", 5}, | |
478 | { "ss0", 6}, | |
479 | { "ss1", 7}, | |
480 | { "ss2", 8}, | |
481 | { "ss3", 9}, | |
482 | { "ss4", 10}, | |
483 | { "gcr", 11}, | |
484 | { "gsr", 12}, | |
485 | { "", 0} | |
486 | }; | |
487 | ||
488 | static char * | |
489 | parse_creg (s, reg) | |
490 | char * s; | |
491 | unsigned * reg; | |
492 | { | |
493 | int i; | |
494 | ||
495 | /* Strip leading whitespace. */ | |
3882b010 | 496 | while (ISSPACE (* s)) |
252b5132 | 497 | ++s; |
a75214e5 | 498 | |
3882b010 | 499 | if ((TOLOWER (s[0]) == 'c' && TOLOWER (s[1]) == 'r')) |
252b5132 RH |
500 | { |
501 | if (s[2] == '3' && s[3] >= '0' && s[3] <= '1') | |
502 | { | |
503 | *reg = 30 + s[3] - '0'; | |
504 | return s + 4; | |
505 | } | |
a75214e5 | 506 | |
252b5132 RH |
507 | if (s[2] == '2' && s[3] >= '0' && s[3] <= '9') |
508 | { | |
509 | *reg = 20 + s[3] - '0'; | |
510 | return s + 4; | |
511 | } | |
a75214e5 | 512 | |
252b5132 RH |
513 | if (s[2] == '1' && s[3] >= '0' && s[3] <= '9') |
514 | { | |
515 | *reg = 10 + s[3] - '0'; | |
516 | return s + 4; | |
517 | } | |
a75214e5 | 518 | |
252b5132 RH |
519 | if (s[2] >= '0' && s[2] <= '9') |
520 | { | |
521 | *reg = s[2] - '0'; | |
522 | return s + 3; | |
523 | } | |
524 | } | |
a75214e5 | 525 | |
252b5132 RH |
526 | /* Look at alternate creg names before giving error. */ |
527 | for (i = 0; cregs[i].name[0] != '\0'; i++) | |
528 | { | |
529 | char buf [10]; | |
530 | int length; | |
531 | int j; | |
a75214e5 | 532 | |
252b5132 | 533 | length = strlen (cregs[i].name); |
a75214e5 | 534 | |
252b5132 | 535 | for (j = 0; j < length; j++) |
3882b010 | 536 | buf[j] = TOLOWER (s[j]); |
a75214e5 | 537 | |
252b5132 RH |
538 | if (strncmp (cregs[i].name, buf, length) == 0) |
539 | { | |
540 | *reg = cregs[i].crnum; | |
541 | return s + length; | |
542 | } | |
543 | } | |
a75214e5 | 544 | |
252b5132 | 545 | as_bad (_("control register expected, but saw '%.6s'"), s); |
a75214e5 | 546 | |
252b5132 RH |
547 | return s; |
548 | } | |
549 | ||
bec50466 NC |
550 | static char * |
551 | parse_psrmod (s, reg) | |
552 | char * s; | |
553 | unsigned * reg; | |
554 | { | |
555 | int i; | |
556 | char buf[10]; | |
557 | static struct psrmods | |
558 | { | |
559 | char * name; | |
560 | unsigned int value; | |
561 | } | |
562 | psrmods[] = | |
563 | { | |
564 | { "ie", 1 }, | |
565 | { "fe", 2 }, | |
566 | { "ee", 4 }, | |
567 | { "af", 8 } /* Really 0 and non-combinable. */ | |
568 | }; | |
a75214e5 | 569 | |
bec50466 | 570 | for (i = 0; i < 2; i++) |
3882b010 | 571 | buf[i] = TOLOWER (s[i]); |
a75214e5 | 572 | |
bec50466 NC |
573 | for (i = sizeof (psrmods) / sizeof (psrmods[0]); i--;) |
574 | { | |
575 | if (! strncmp (psrmods[i].name, buf, 2)) | |
576 | { | |
5f8075fa | 577 | * reg = psrmods[i].value; |
a75214e5 | 578 | |
5f8075fa | 579 | return s + 2; |
bec50466 NC |
580 | } |
581 | } | |
a75214e5 | 582 | |
bec50466 | 583 | as_bad (_("bad/missing psr specifier")); |
a75214e5 | 584 | |
bec50466 | 585 | * reg = 0; |
a75214e5 | 586 | |
bec50466 NC |
587 | return s; |
588 | } | |
589 | ||
252b5132 RH |
590 | static char * |
591 | parse_exp (s, e) | |
592 | char * s; | |
593 | expressionS * e; | |
594 | { | |
595 | char * save; | |
596 | char * new; | |
597 | ||
598 | /* Skip whitespace. */ | |
3882b010 | 599 | while (ISSPACE (* s)) |
252b5132 | 600 | ++ s; |
a75214e5 | 601 | |
252b5132 RH |
602 | save = input_line_pointer; |
603 | input_line_pointer = s; | |
604 | ||
605 | expression (e); | |
a75214e5 | 606 | |
252b5132 RH |
607 | if (e->X_op == O_absent) |
608 | as_bad (_("missing operand")); | |
a75214e5 | 609 | |
252b5132 RH |
610 | new = input_line_pointer; |
611 | input_line_pointer = save; | |
a75214e5 | 612 | |
252b5132 RH |
613 | return new; |
614 | } | |
615 | ||
616 | static void | |
617 | make_name (s, p, n) | |
618 | char * s; | |
619 | char * p; | |
620 | int n; | |
621 | { | |
622 | static const char hex[] = "0123456789ABCDEF"; | |
623 | ||
624 | s[0] = p[0]; | |
625 | s[1] = p[1]; | |
626 | s[2] = p[2]; | |
627 | s[3] = hex[(n >> 12) & 0xF]; | |
628 | s[4] = hex[(n >> 8) & 0xF]; | |
629 | s[5] = hex[(n >> 4) & 0xF]; | |
630 | s[6] = hex[(n) & 0xF]; | |
631 | s[7] = 0; | |
632 | } | |
633 | ||
b8a40f53 NC |
634 | #define POOL_END_LABEL ".LE" |
635 | #define POOL_START_LABEL ".LS" | |
636 | ||
252b5132 RH |
637 | static void |
638 | dump_literals (isforce) | |
639 | int isforce; | |
640 | { | |
aa699a2c | 641 | unsigned int i; |
252b5132 | 642 | struct literal * p; |
30cdfbed | 643 | symbolS * brarsym = NULL; |
a75214e5 | 644 | |
252b5132 RH |
645 | if (poolsize == 0) |
646 | return; | |
647 | ||
648 | /* Must we branch around the literal table? */ | |
649 | if (isforce) | |
650 | { | |
651 | char * output; | |
652 | char brarname[8]; | |
a75214e5 | 653 | |
b8a40f53 | 654 | make_name (brarname, POOL_END_LABEL, poolnumber); |
a75214e5 | 655 | |
252b5132 | 656 | brarsym = symbol_make (brarname); |
a75214e5 | 657 | |
252b5132 | 658 | symbol_table_insert (brarsym); |
a75214e5 | 659 | |
252b5132 | 660 | output = frag_var (rs_machine_dependent, |
93c2a809 AM |
661 | md_relax_table[C (UNCD_JUMP, DISP32)].rlx_length, |
662 | md_relax_table[C (UNCD_JUMP, DISP12)].rlx_length, | |
252b5132 RH |
663 | C (UNCD_JUMP, 0), brarsym, 0, 0); |
664 | output[0] = INST_BYTE0 (MCORE_INST_BR); /* br .+xxx */ | |
665 | output[1] = INST_BYTE1 (MCORE_INST_BR); | |
666 | } | |
a75214e5 | 667 | |
252b5132 RH |
668 | /* Make sure that the section is sufficiently aligned and that |
669 | the literal table is aligned within it. */ | |
670 | record_alignment (now_seg, 2); | |
671 | frag_align (2, 0, 0); | |
a75214e5 | 672 | |
252b5132 | 673 | colon (S_GET_NAME (poolsym)); |
a75214e5 | 674 | |
252b5132 RH |
675 | for (i = 0, p = litpool; i < poolsize; i++, p++) |
676 | emit_expr (& p->e, 4); | |
a75214e5 | 677 | |
30cdfbed | 678 | if (brarsym != NULL) |
252b5132 | 679 | colon (S_GET_NAME (brarsym)); |
a75214e5 | 680 | |
252b5132 RH |
681 | poolsize = 0; |
682 | } | |
683 | ||
684 | static void | |
685 | check_literals (kind, offset) | |
686 | int kind; | |
687 | int offset; | |
688 | { | |
689 | poolspan += offset; | |
a75214e5 | 690 | |
252b5132 RH |
691 | /* SPANCLOSE and SPANEXIT are smaller numbers than SPANPANIC. |
692 | SPANPANIC means that we must dump now. | |
693 | kind == 0 is any old instruction. | |
694 | kind > 0 means we just had a control transfer instruction. | |
695 | kind == 1 means within a function | |
696 | kind == 2 means we just left a function | |
a75214e5 | 697 | |
252b5132 RH |
698 | The dump_literals (1) call inserts a branch around the table, so |
699 | we first look to see if its a situation where we won't have to | |
700 | insert a branch (e.g., the previous instruction was an unconditional | |
701 | branch). | |
a75214e5 | 702 | |
252b5132 RH |
703 | SPANPANIC is the point where we must dump a single-entry pool. |
704 | it accounts for alignments and an inserted branch. | |
705 | the 'poolsize*2' accounts for the scenario where we do: | |
706 | lrw r1,lit1; lrw r2,lit2; lrw r3,lit3 | |
707 | Note that the 'lit2' reference is 2 bytes further along | |
708 | but the literal it references will be 4 bytes further along, | |
709 | so we must consider the poolsize into this equation. | |
710 | This is slightly over-cautious, but guarantees that we won't | |
711 | panic because a relocation is too distant. */ | |
a75214e5 | 712 | |
252b5132 RH |
713 | if (poolspan > SPANCLOSE && kind > 0) |
714 | dump_literals (0); | |
4c1102fd | 715 | else if (poolspan > SPANEXIT && kind > 1) |
252b5132 RH |
716 | dump_literals (0); |
717 | else if (poolspan >= (SPANPANIC - poolsize * 2)) | |
718 | dump_literals (1); | |
719 | } | |
720 | ||
721 | static int | |
722 | enter_literal (e, ispcrel) | |
723 | expressionS * e; | |
724 | int ispcrel; | |
725 | { | |
aa699a2c | 726 | unsigned int i; |
252b5132 RH |
727 | struct literal * p; |
728 | ||
729 | if (poolsize >= MAX_POOL_SIZE - 2) | |
730 | { | |
731 | /* The literal pool is as full as we can handle. We have | |
5f8075fa AM |
732 | to be 2 entries shy of the 1024/4=256 entries because we |
733 | have to allow for the branch (2 bytes) and the alignment | |
734 | (2 bytes before the first insn referencing the pool and | |
735 | 2 bytes before the pool itself) == 6 bytes, rounds up | |
736 | to 2 entries. */ | |
252b5132 RH |
737 | dump_literals (1); |
738 | } | |
739 | ||
740 | if (poolsize == 0) | |
741 | { | |
742 | /* Create new literal pool. */ | |
743 | if (++ poolnumber > 0xFFFF) | |
744 | as_fatal (_("more than 65K literal pools")); | |
a75214e5 | 745 | |
b8a40f53 | 746 | make_name (poolname, POOL_START_LABEL, poolnumber); |
252b5132 RH |
747 | poolsym = symbol_make (poolname); |
748 | symbol_table_insert (poolsym); | |
749 | poolspan = 0; | |
750 | } | |
a75214e5 | 751 | |
252b5132 RH |
752 | /* Search pool for value so we don't have duplicates. */ |
753 | for (p = litpool, i = 0; i < poolsize; i++, p++) | |
754 | { | |
755 | if (e->X_op == p->e.X_op | |
756 | && e->X_add_symbol == p->e.X_add_symbol | |
757 | && e->X_add_number == p->e.X_add_number | |
758 | && ispcrel == p->ispcrel) | |
759 | { | |
760 | p->refcnt ++; | |
761 | return i; | |
762 | } | |
763 | } | |
764 | ||
765 | p->refcnt = 1; | |
766 | p->ispcrel = ispcrel; | |
767 | p->e = * e; | |
a75214e5 | 768 | |
252b5132 RH |
769 | poolsize ++; |
770 | ||
a75214e5 | 771 | return i; |
252b5132 RH |
772 | } |
773 | ||
774 | /* Parse a literal specification. -- either new or old syntax. | |
775 | old syntax: the user supplies the label and places the literal. | |
776 | new syntax: we put it into the literal pool. */ | |
777 | static char * | |
778 | parse_rt (s, outputp, ispcrel, ep) | |
779 | char * s; | |
780 | char ** outputp; | |
781 | int ispcrel; | |
782 | expressionS * ep; | |
783 | { | |
784 | expressionS e; | |
785 | int n; | |
a75214e5 | 786 | |
252b5132 RH |
787 | if (ep) |
788 | /* Indicate nothing there. */ | |
789 | ep->X_op = O_absent; | |
a75214e5 | 790 | |
252b5132 RH |
791 | if (*s == '[') |
792 | { | |
793 | s = parse_exp (s + 1, & e); | |
a75214e5 | 794 | |
252b5132 RH |
795 | if (*s == ']') |
796 | s++; | |
797 | else | |
798 | as_bad (_("missing ']'")); | |
799 | } | |
800 | else | |
801 | { | |
802 | s = parse_exp (s, & e); | |
a75214e5 | 803 | |
252b5132 | 804 | n = enter_literal (& e, ispcrel); |
a75214e5 | 805 | |
252b5132 RH |
806 | if (ep) |
807 | *ep = e; | |
808 | ||
809 | /* Create a reference to pool entry. */ | |
810 | e.X_op = O_symbol; | |
811 | e.X_add_symbol = poolsym; | |
812 | e.X_add_number = n << 2; | |
813 | } | |
a75214e5 | 814 | |
252b5132 RH |
815 | * outputp = frag_more (2); |
816 | ||
817 | fix_new_exp (frag_now, (*outputp) - frag_now->fr_literal, 2, & e, 1, | |
818 | BFD_RELOC_MCORE_PCREL_IMM8BY4); | |
819 | ||
820 | return s; | |
821 | } | |
822 | ||
823 | static char * | |
824 | parse_imm (s, val, min, max) | |
825 | char * s; | |
826 | unsigned * val; | |
827 | unsigned min; | |
828 | unsigned max; | |
829 | { | |
830 | char * new; | |
831 | expressionS e; | |
a75214e5 | 832 | |
252b5132 | 833 | new = parse_exp (s, & e); |
a75214e5 | 834 | |
252b5132 RH |
835 | if (e.X_op == O_absent) |
836 | ; /* An error message has already been emitted. */ | |
837 | else if (e.X_op != O_constant) | |
838 | as_bad (_("operand must be a constant")); | |
aa699a2c AM |
839 | else if ((addressT) e.X_add_number < min || (addressT) e.X_add_number > max) |
840 | as_bad (_("operand must be absolute in range %u..%u, not %ld"), | |
841 | min, max, (long) e.X_add_number); | |
252b5132 RH |
842 | |
843 | * val = e.X_add_number; | |
a75214e5 | 844 | |
252b5132 RH |
845 | return new; |
846 | } | |
847 | ||
848 | static char * | |
849 | parse_mem (s, reg, off, siz) | |
850 | char * s; | |
851 | unsigned * reg; | |
852 | unsigned * off; | |
853 | unsigned siz; | |
854 | { | |
252b5132 | 855 | * off = 0; |
a75214e5 | 856 | |
3882b010 | 857 | while (ISSPACE (* s)) |
252b5132 | 858 | ++ s; |
a75214e5 | 859 | |
252b5132 RH |
860 | if (* s == '(') |
861 | { | |
862 | s = parse_reg (s + 1, reg); | |
863 | ||
3882b010 | 864 | while (ISSPACE (* s)) |
252b5132 | 865 | ++ s; |
a75214e5 | 866 | |
252b5132 RH |
867 | if (* s == ',') |
868 | { | |
869 | s = parse_imm (s + 1, off, 0, 63); | |
a75214e5 | 870 | |
252b5132 RH |
871 | if (siz > 1) |
872 | { | |
873 | if (siz > 2) | |
874 | { | |
875 | if (* off & 0x3) | |
876 | as_bad (_("operand must be a multiple of 4")); | |
a75214e5 | 877 | |
252b5132 RH |
878 | * off >>= 2; |
879 | } | |
880 | else | |
881 | { | |
882 | if (* off & 0x1) | |
883 | as_bad (_("operand must be a multiple of 2")); | |
a75214e5 | 884 | |
252b5132 RH |
885 | * off >>= 1; |
886 | } | |
887 | } | |
888 | } | |
a75214e5 | 889 | |
3882b010 | 890 | while (ISSPACE (* s)) |
252b5132 | 891 | ++ s; |
a75214e5 | 892 | |
252b5132 RH |
893 | if (* s == ')') |
894 | s ++; | |
895 | } | |
896 | else | |
897 | as_bad (_("base register expected")); | |
a75214e5 | 898 | |
252b5132 RH |
899 | return s; |
900 | } | |
901 | ||
902 | /* This is the guts of the machine-dependent assembler. STR points to a | |
903 | machine dependent instruction. This function is supposed to emit | |
904 | the frags/bytes it assembles to. */ | |
905 | ||
906 | void | |
907 | md_assemble (str) | |
908 | char * str; | |
909 | { | |
910 | char * op_start; | |
911 | char * op_end; | |
912 | mcore_opcode_info * opcode; | |
913 | char * output; | |
914 | int nlen = 0; | |
915 | unsigned short inst; | |
916 | unsigned reg; | |
917 | unsigned off; | |
918 | unsigned isize; | |
919 | expressionS e; | |
920 | char name[20]; | |
921 | ||
922 | /* Drop leading whitespace. */ | |
3882b010 | 923 | while (ISSPACE (* str)) |
252b5132 RH |
924 | str ++; |
925 | ||
926 | /* Find the op code end. */ | |
927 | for (op_start = op_end = str; | |
b75c0c92 | 928 | nlen < 20 && !is_end_of_line [(unsigned char) *op_end] && *op_end != ' '; |
252b5132 RH |
929 | op_end++) |
930 | { | |
931 | name[nlen] = op_start[nlen]; | |
932 | nlen++; | |
933 | } | |
a75214e5 | 934 | |
252b5132 | 935 | name [nlen] = 0; |
a75214e5 | 936 | |
252b5132 RH |
937 | if (nlen == 0) |
938 | { | |
939 | as_bad (_("can't find opcode ")); | |
940 | return; | |
941 | } | |
942 | ||
943 | opcode = (mcore_opcode_info *) hash_find (opcode_hash_control, name); | |
944 | if (opcode == NULL) | |
945 | { | |
946 | as_bad (_("unknown opcode \"%s\""), name); | |
947 | return; | |
948 | } | |
a75214e5 | 949 | |
252b5132 RH |
950 | inst = opcode->inst; |
951 | isize = 2; | |
a75214e5 | 952 | |
252b5132 RH |
953 | switch (opcode->opclass) |
954 | { | |
955 | case O0: | |
956 | output = frag_more (2); | |
957 | break; | |
a75214e5 | 958 | |
252b5132 RH |
959 | case OT: |
960 | op_end = parse_imm (op_end + 1, & reg, 0, 3); | |
961 | inst |= reg; | |
962 | output = frag_more (2); | |
963 | break; | |
a75214e5 | 964 | |
252b5132 RH |
965 | case O1: |
966 | op_end = parse_reg (op_end + 1, & reg); | |
967 | inst |= reg; | |
968 | output = frag_more (2); | |
969 | break; | |
a75214e5 | 970 | |
252b5132 RH |
971 | case JMP: |
972 | op_end = parse_reg (op_end + 1, & reg); | |
973 | inst |= reg; | |
974 | output = frag_more (2); | |
975 | /* In a sifilter mode, we emit this insn 2 times, | |
5f8075fa | 976 | fixes problem of an interrupt during a jmp.. */ |
252b5132 RH |
977 | if (sifilter_mode) |
978 | { | |
b8a40f53 NC |
979 | output[0] = INST_BYTE0 (inst); |
980 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
981 | output = frag_more (2); |
982 | } | |
983 | break; | |
a75214e5 | 984 | |
252b5132 RH |
985 | case JSR: |
986 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 987 | |
252b5132 RH |
988 | if (reg == 15) |
989 | as_bad (_("invalid register: r15 illegal")); | |
a75214e5 | 990 | |
252b5132 RH |
991 | inst |= reg; |
992 | output = frag_more (2); | |
a75214e5 | 993 | |
252b5132 RH |
994 | if (sifilter_mode) |
995 | { | |
996 | /* Replace with: bsr .+2 ; addi r15,6; jmp rx ; jmp rx */ | |
997 | inst = MCORE_INST_BSR; /* with 0 displacement */ | |
b8a40f53 NC |
998 | output[0] = INST_BYTE0 (inst); |
999 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
1000 | |
1001 | output = frag_more (2); | |
1002 | inst = MCORE_INST_ADDI; | |
1003 | inst |= 15; /* addi r15,6 */ | |
1004 | inst |= (6 - 1) << 4; /* over the jmp's */ | |
b8a40f53 NC |
1005 | output[0] = INST_BYTE0 (inst); |
1006 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
1007 | |
1008 | output = frag_more (2); | |
1009 | inst = MCORE_INST_JMP | reg; | |
b8a40f53 NC |
1010 | output[0] = INST_BYTE0 (inst); |
1011 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
1012 | |
1013 | output = frag_more (2); /* 2nd emitted in fallthru */ | |
1014 | } | |
1015 | break; | |
a75214e5 | 1016 | |
252b5132 RH |
1017 | case OC: |
1018 | op_end = parse_reg (op_end + 1, & reg); | |
1019 | inst |= reg; | |
a75214e5 | 1020 | |
252b5132 | 1021 | /* Skip whitespace. */ |
3882b010 | 1022 | while (ISSPACE (* op_end)) |
252b5132 | 1023 | ++ op_end; |
a75214e5 | 1024 | |
252b5132 RH |
1025 | if (*op_end == ',') |
1026 | { | |
1027 | op_end = parse_creg (op_end + 1, & reg); | |
1028 | inst |= reg << 4; | |
1029 | } | |
a75214e5 | 1030 | |
252b5132 RH |
1031 | output = frag_more (2); |
1032 | break; | |
1033 | ||
bec50466 NC |
1034 | case MULSH: |
1035 | if (cpu == M210) | |
1036 | { | |
1037 | as_bad (_("M340 specific opcode used when assembling for M210")); | |
1038 | break; | |
1039 | } | |
a75214e5 | 1040 | /* drop through... */ |
252b5132 RH |
1041 | case O2: |
1042 | op_end = parse_reg (op_end + 1, & reg); | |
1043 | inst |= reg; | |
a75214e5 | 1044 | |
252b5132 | 1045 | /* Skip whitespace. */ |
3882b010 | 1046 | while (ISSPACE (* op_end)) |
252b5132 | 1047 | ++ op_end; |
a75214e5 | 1048 | |
252b5132 RH |
1049 | if (* op_end == ',') |
1050 | { | |
1051 | op_end = parse_reg (op_end + 1, & reg); | |
1052 | inst |= reg << 4; | |
1053 | } | |
1054 | else | |
1055 | as_bad (_("second operand missing")); | |
a75214e5 | 1056 | |
252b5132 RH |
1057 | output = frag_more (2); |
1058 | break; | |
a75214e5 | 1059 | |
252b5132 RH |
1060 | case X1: /* Handle both syntax-> xtrb- r1,rx OR xtrb- rx */ |
1061 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1062 | |
252b5132 | 1063 | /* Skip whitespace. */ |
3882b010 | 1064 | while (ISSPACE (* op_end)) |
252b5132 | 1065 | ++ op_end; |
a75214e5 | 1066 | |
252b5132 RH |
1067 | if (* op_end == ',') /* xtrb- r1,rx */ |
1068 | { | |
1069 | if (reg != 1) | |
1070 | as_bad (_("destination register must be r1")); | |
a75214e5 | 1071 | |
252b5132 RH |
1072 | op_end = parse_reg (op_end + 1, & reg); |
1073 | } | |
a75214e5 | 1074 | |
252b5132 RH |
1075 | inst |= reg; |
1076 | output = frag_more (2); | |
1077 | break; | |
a75214e5 | 1078 | |
252b5132 RH |
1079 | case O1R1: /* div- rx,r1 */ |
1080 | op_end = parse_reg (op_end + 1, & reg); | |
1081 | inst |= reg; | |
a75214e5 | 1082 | |
252b5132 | 1083 | /* Skip whitespace. */ |
3882b010 | 1084 | while (ISSPACE (* op_end)) |
252b5132 | 1085 | ++ op_end; |
a75214e5 | 1086 | |
252b5132 RH |
1087 | if (* op_end == ',') |
1088 | { | |
1089 | op_end = parse_reg (op_end + 1, & reg); | |
1090 | if (reg != 1) | |
1091 | as_bad (_("source register must be r1")); | |
1092 | } | |
1093 | else | |
1094 | as_bad (_("second operand missing")); | |
a75214e5 | 1095 | |
252b5132 RH |
1096 | output = frag_more (2); |
1097 | break; | |
a75214e5 | 1098 | |
252b5132 RH |
1099 | case OI: |
1100 | op_end = parse_reg (op_end + 1, & reg); | |
1101 | inst |= reg; | |
a75214e5 | 1102 | |
252b5132 | 1103 | /* Skip whitespace. */ |
3882b010 | 1104 | while (ISSPACE (* op_end)) |
252b5132 | 1105 | ++ op_end; |
a75214e5 | 1106 | |
252b5132 RH |
1107 | if (* op_end == ',') |
1108 | { | |
1109 | op_end = parse_imm (op_end + 1, & reg, 1, 32); | |
1110 | inst |= (reg - 1) << 4; | |
1111 | } | |
1112 | else | |
1113 | as_bad (_("second operand missing")); | |
a75214e5 | 1114 | |
252b5132 RH |
1115 | output = frag_more (2); |
1116 | break; | |
a75214e5 | 1117 | |
252b5132 RH |
1118 | case OB: |
1119 | op_end = parse_reg (op_end + 1, & reg); | |
1120 | inst |= reg; | |
a75214e5 | 1121 | |
252b5132 | 1122 | /* Skip whitespace. */ |
3882b010 | 1123 | while (ISSPACE (* op_end)) |
252b5132 | 1124 | ++ op_end; |
a75214e5 | 1125 | |
252b5132 RH |
1126 | if (* op_end == ',') |
1127 | { | |
1128 | op_end = parse_imm (op_end + 1, & reg, 0, 31); | |
1129 | inst |= reg << 4; | |
1130 | } | |
1131 | else | |
1132 | as_bad (_("second operand missing")); | |
a75214e5 | 1133 | |
252b5132 RH |
1134 | output = frag_more (2); |
1135 | break; | |
a75214e5 | 1136 | |
252b5132 RH |
1137 | case OB2: /* like OB, but arg is 2^n instead of n */ |
1138 | op_end = parse_reg (op_end + 1, & reg); | |
1139 | inst |= reg; | |
a75214e5 | 1140 | |
252b5132 | 1141 | /* Skip whitespace. */ |
3882b010 | 1142 | while (ISSPACE (* op_end)) |
252b5132 | 1143 | ++ op_end; |
a75214e5 | 1144 | |
252b5132 RH |
1145 | if (* op_end == ',') |
1146 | { | |
1147 | op_end = parse_imm (op_end + 1, & reg, 1, 1 << 31); | |
a75214e5 | 1148 | /* Further restrict the immediate to a power of two. */ |
252b5132 | 1149 | if ((reg & (reg - 1)) == 0) |
f17c130b | 1150 | reg = mylog2 (reg); |
252b5132 RH |
1151 | else |
1152 | { | |
1153 | reg = 0; | |
1154 | as_bad (_("immediate is not a power of two")); | |
1155 | } | |
1156 | inst |= (reg) << 4; | |
1157 | } | |
1158 | else | |
1159 | as_bad (_("second operand missing")); | |
a75214e5 | 1160 | |
252b5132 RH |
1161 | output = frag_more (2); |
1162 | break; | |
a75214e5 KH |
1163 | |
1164 | case OBRa: /* Specific for bgeni: imm of 0->6 translate to movi. */ | |
252b5132 RH |
1165 | case OBRb: |
1166 | case OBRc: | |
1167 | op_end = parse_reg (op_end + 1, & reg); | |
1168 | inst |= reg; | |
a75214e5 | 1169 | |
252b5132 | 1170 | /* Skip whitespace. */ |
3882b010 | 1171 | while (ISSPACE (* op_end)) |
252b5132 | 1172 | ++ op_end; |
a75214e5 | 1173 | |
252b5132 RH |
1174 | if (* op_end == ',') |
1175 | { | |
1176 | op_end = parse_imm (op_end + 1, & reg, 0, 31); | |
1177 | /* immediate values of 0 -> 6 translate to movi */ | |
1178 | if (reg <= 6) | |
1179 | { | |
1180 | inst = (inst & 0xF) | MCORE_INST_BGENI_ALT; | |
1181 | reg = 0x1 << reg; | |
1182 | as_warn (_("translating bgeni to movi")); | |
1183 | } | |
1184 | inst &= ~ 0x01f0; | |
1185 | inst |= reg << 4; | |
1186 | } | |
1187 | else | |
1188 | as_bad (_("second operand missing")); | |
a75214e5 | 1189 | |
252b5132 RH |
1190 | output = frag_more (2); |
1191 | break; | |
a75214e5 | 1192 | |
252b5132 RH |
1193 | case OBR2: /* like OBR, but arg is 2^n instead of n */ |
1194 | op_end = parse_reg (op_end + 1, & reg); | |
1195 | inst |= reg; | |
a75214e5 | 1196 | |
252b5132 | 1197 | /* Skip whitespace. */ |
3882b010 | 1198 | while (ISSPACE (* op_end)) |
252b5132 | 1199 | ++ op_end; |
a75214e5 | 1200 | |
252b5132 RH |
1201 | if (* op_end == ',') |
1202 | { | |
1203 | op_end = parse_imm (op_end + 1, & reg, 1, 1 << 31); | |
a75214e5 | 1204 | |
252b5132 RH |
1205 | /* Further restrict the immediate to a power of two. */ |
1206 | if ((reg & (reg - 1)) == 0) | |
f17c130b | 1207 | reg = mylog2 (reg); |
252b5132 RH |
1208 | else |
1209 | { | |
1210 | reg = 0; | |
1211 | as_bad (_("immediate is not a power of two")); | |
1212 | } | |
a75214e5 KH |
1213 | |
1214 | /* Immediate values of 0 -> 6 translate to movi. */ | |
252b5132 RH |
1215 | if (reg <= 6) |
1216 | { | |
1217 | inst = (inst & 0xF) | MCORE_INST_BGENI_ALT; | |
1218 | reg = 0x1 << reg; | |
1219 | as_warn (_("translating mgeni to movi")); | |
1220 | } | |
a75214e5 | 1221 | |
252b5132 RH |
1222 | inst |= reg << 4; |
1223 | } | |
1224 | else | |
1225 | as_bad (_("second operand missing")); | |
a75214e5 | 1226 | |
252b5132 RH |
1227 | output = frag_more (2); |
1228 | break; | |
a75214e5 | 1229 | |
252b5132 RH |
1230 | case OMa: /* Specific for bmaski: imm 1->7 translate to movi. */ |
1231 | case OMb: | |
1232 | case OMc: | |
1233 | op_end = parse_reg (op_end + 1, & reg); | |
1234 | inst |= reg; | |
a75214e5 | 1235 | |
252b5132 | 1236 | /* Skip whitespace. */ |
3882b010 | 1237 | while (ISSPACE (* op_end)) |
252b5132 | 1238 | ++ op_end; |
a75214e5 | 1239 | |
252b5132 RH |
1240 | if (* op_end == ',') |
1241 | { | |
1242 | op_end = parse_imm (op_end + 1, & reg, 1, 32); | |
a75214e5 KH |
1243 | |
1244 | /* Immediate values of 1 -> 7 translate to movi. */ | |
252b5132 RH |
1245 | if (reg <= 7) |
1246 | { | |
1247 | inst = (inst & 0xF) | MCORE_INST_BMASKI_ALT; | |
1248 | reg = (0x1 << reg) - 1; | |
1249 | inst |= reg << 4; | |
a75214e5 | 1250 | |
252b5132 RH |
1251 | as_warn (_("translating bmaski to movi")); |
1252 | } | |
1253 | else | |
1254 | { | |
1255 | inst &= ~ 0x01F0; | |
1256 | inst |= (reg & 0x1F) << 4; | |
1257 | } | |
1258 | } | |
1259 | else | |
1260 | as_bad (_("second operand missing")); | |
a75214e5 | 1261 | |
252b5132 RH |
1262 | output = frag_more (2); |
1263 | break; | |
a75214e5 | 1264 | |
252b5132 RH |
1265 | case SI: |
1266 | op_end = parse_reg (op_end + 1, & reg); | |
1267 | inst |= reg; | |
a75214e5 | 1268 | |
252b5132 | 1269 | /* Skip whitespace. */ |
3882b010 | 1270 | while (ISSPACE (* op_end)) |
252b5132 | 1271 | ++ op_end; |
a75214e5 | 1272 | |
252b5132 RH |
1273 | if (* op_end == ',') |
1274 | { | |
1275 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
1276 | inst |= reg << 4; | |
1277 | } | |
1278 | else | |
1279 | as_bad (_("second operand missing")); | |
a75214e5 | 1280 | |
252b5132 RH |
1281 | output = frag_more (2); |
1282 | break; | |
1283 | ||
1284 | case I7: | |
1285 | op_end = parse_reg (op_end + 1, & reg); | |
1286 | inst |= reg; | |
a75214e5 | 1287 | |
252b5132 | 1288 | /* Skip whitespace. */ |
3882b010 | 1289 | while (ISSPACE (* op_end)) |
252b5132 | 1290 | ++ op_end; |
a75214e5 | 1291 | |
252b5132 RH |
1292 | if (* op_end == ',') |
1293 | { | |
1294 | op_end = parse_imm (op_end + 1, & reg, 0, 0x7F); | |
1295 | inst |= reg << 4; | |
1296 | } | |
1297 | else | |
1298 | as_bad (_("second operand missing")); | |
a75214e5 | 1299 | |
252b5132 RH |
1300 | output = frag_more (2); |
1301 | break; | |
a75214e5 | 1302 | |
252b5132 RH |
1303 | case LS: |
1304 | op_end = parse_reg (op_end + 1, & reg); | |
1305 | inst |= reg << 8; | |
a75214e5 | 1306 | |
252b5132 | 1307 | /* Skip whitespace. */ |
3882b010 | 1308 | while (ISSPACE (* op_end)) |
252b5132 | 1309 | ++ op_end; |
a75214e5 | 1310 | |
252b5132 RH |
1311 | if (* op_end == ',') |
1312 | { | |
1313 | int size; | |
a75214e5 | 1314 | |
252b5132 RH |
1315 | if ((inst & 0x6000) == 0) |
1316 | size = 4; | |
1317 | else if ((inst & 0x6000) == 0x4000) | |
1318 | size = 2; | |
1319 | else if ((inst & 0x6000) == 0x2000) | |
1320 | size = 1; | |
aa699a2c AM |
1321 | else |
1322 | abort (); | |
a75214e5 | 1323 | |
252b5132 | 1324 | op_end = parse_mem (op_end + 1, & reg, & off, size); |
a75214e5 | 1325 | |
252b5132 RH |
1326 | if (off > 16) |
1327 | as_bad (_("displacement too large (%d)"), off); | |
1328 | else | |
1329 | inst |= (reg) | (off << 4); | |
1330 | } | |
1331 | else | |
1332 | as_bad (_("second operand missing")); | |
a75214e5 | 1333 | |
252b5132 RH |
1334 | output = frag_more (2); |
1335 | break; | |
a75214e5 | 1336 | |
252b5132 RH |
1337 | case LR: |
1338 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1339 | |
252b5132 RH |
1340 | if (reg == 0 || reg == 15) |
1341 | as_bad (_("Invalid register: r0 and r15 illegal")); | |
a75214e5 | 1342 | |
252b5132 | 1343 | inst |= (reg << 8); |
a75214e5 | 1344 | |
252b5132 | 1345 | /* Skip whitespace. */ |
3882b010 | 1346 | while (ISSPACE (* op_end)) |
252b5132 | 1347 | ++ op_end; |
a75214e5 | 1348 | |
252b5132 | 1349 | if (* op_end == ',') |
2d473ce9 NC |
1350 | { |
1351 | /* parse_rt calls frag_more() for us. */ | |
1352 | input_line_pointer = parse_rt (op_end + 1, & output, 0, 0); | |
5f8075fa | 1353 | op_end = input_line_pointer; |
2d473ce9 | 1354 | } |
252b5132 RH |
1355 | else |
1356 | { | |
1357 | as_bad (_("second operand missing")); | |
1358 | output = frag_more (2); /* save its space */ | |
1359 | } | |
1360 | break; | |
a75214e5 | 1361 | |
252b5132 RH |
1362 | case LJ: |
1363 | input_line_pointer = parse_rt (op_end + 1, & output, 1, 0); | |
1364 | /* parse_rt() calls frag_more() for us. */ | |
2d473ce9 | 1365 | op_end = input_line_pointer; |
252b5132 | 1366 | break; |
a75214e5 | 1367 | |
252b5132 RH |
1368 | case RM: |
1369 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1370 | |
252b5132 RH |
1371 | if (reg == 0 || reg == 15) |
1372 | as_bad (_("bad starting register: r0 and r15 invalid")); | |
a75214e5 | 1373 | |
252b5132 | 1374 | inst |= reg; |
a75214e5 | 1375 | |
252b5132 | 1376 | /* Skip whitespace. */ |
3882b010 | 1377 | while (ISSPACE (* op_end)) |
252b5132 | 1378 | ++ op_end; |
a75214e5 | 1379 | |
252b5132 RH |
1380 | if (* op_end == '-') |
1381 | { | |
1382 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1383 | |
252b5132 RH |
1384 | if (reg != 15) |
1385 | as_bad (_("ending register must be r15")); | |
a75214e5 | 1386 | |
252b5132 | 1387 | /* Skip whitespace. */ |
3882b010 | 1388 | while (ISSPACE (* op_end)) |
252b5132 RH |
1389 | ++ op_end; |
1390 | } | |
a75214e5 | 1391 | |
252b5132 RH |
1392 | if (* op_end == ',') |
1393 | { | |
1394 | op_end ++; | |
a75214e5 | 1395 | |
252b5132 | 1396 | /* Skip whitespace. */ |
3882b010 | 1397 | while (ISSPACE (* op_end)) |
252b5132 | 1398 | ++ op_end; |
a75214e5 | 1399 | |
252b5132 RH |
1400 | if (* op_end == '(') |
1401 | { | |
1402 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1403 | |
252b5132 RH |
1404 | if (reg != 0) |
1405 | as_bad (_("bad base register: must be r0")); | |
a75214e5 | 1406 | |
252b5132 RH |
1407 | if (* op_end == ')') |
1408 | op_end ++; | |
1409 | } | |
1410 | else | |
1411 | as_bad (_("base register expected")); | |
1412 | } | |
1413 | else | |
1414 | as_bad (_("second operand missing")); | |
a75214e5 | 1415 | |
252b5132 RH |
1416 | output = frag_more (2); |
1417 | break; | |
a75214e5 | 1418 | |
252b5132 RH |
1419 | case RQ: |
1420 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1421 | |
252b5132 RH |
1422 | if (reg != 4) |
1423 | as_fatal (_("first register must be r4")); | |
a75214e5 | 1424 | |
252b5132 | 1425 | /* Skip whitespace. */ |
3882b010 | 1426 | while (ISSPACE (* op_end)) |
252b5132 | 1427 | ++ op_end; |
a75214e5 | 1428 | |
252b5132 RH |
1429 | if (* op_end == '-') |
1430 | { | |
1431 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1432 | |
252b5132 RH |
1433 | if (reg != 7) |
1434 | as_fatal (_("last register must be r7")); | |
a75214e5 | 1435 | |
252b5132 | 1436 | /* Skip whitespace. */ |
3882b010 | 1437 | while (ISSPACE (* op_end)) |
252b5132 | 1438 | ++ op_end; |
a75214e5 | 1439 | |
252b5132 RH |
1440 | if (* op_end == ',') |
1441 | { | |
1442 | op_end ++; | |
a75214e5 | 1443 | |
252b5132 | 1444 | /* Skip whitespace. */ |
3882b010 | 1445 | while (ISSPACE (* op_end)) |
252b5132 | 1446 | ++ op_end; |
a75214e5 | 1447 | |
252b5132 RH |
1448 | if (* op_end == '(') |
1449 | { | |
1450 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1451 | |
252b5132 RH |
1452 | if (reg >= 4 && reg <= 7) |
1453 | as_fatal ("base register cannot be r4, r5, r6, or r7"); | |
a75214e5 | 1454 | |
252b5132 | 1455 | inst |= reg; |
a75214e5 | 1456 | |
252b5132 | 1457 | /* Skip whitespace. */ |
3882b010 | 1458 | while (ISSPACE (* op_end)) |
252b5132 | 1459 | ++ op_end; |
a75214e5 | 1460 | |
252b5132 RH |
1461 | if (* op_end == ')') |
1462 | op_end ++; | |
1463 | } | |
1464 | else | |
1465 | as_bad (_("base register expected")); | |
1466 | } | |
1467 | else | |
1468 | as_bad (_("second operand missing")); | |
1469 | } | |
1470 | else | |
1471 | as_bad (_("reg-reg expected")); | |
a75214e5 | 1472 | |
252b5132 RH |
1473 | output = frag_more (2); |
1474 | break; | |
a75214e5 | 1475 | |
252b5132 RH |
1476 | case BR: |
1477 | input_line_pointer = parse_exp (op_end + 1, & e); | |
2d473ce9 | 1478 | op_end = input_line_pointer; |
a75214e5 | 1479 | |
252b5132 | 1480 | output = frag_more (2); |
a75214e5 KH |
1481 | |
1482 | fix_new_exp (frag_now, output-frag_now->fr_literal, | |
252b5132 RH |
1483 | 2, & e, 1, BFD_RELOC_MCORE_PCREL_IMM11BY2); |
1484 | break; | |
a75214e5 | 1485 | |
252b5132 RH |
1486 | case BL: |
1487 | op_end = parse_reg (op_end + 1, & reg); | |
1488 | inst |= reg << 4; | |
a75214e5 | 1489 | |
252b5132 | 1490 | /* Skip whitespace. */ |
3882b010 | 1491 | while (ISSPACE (* op_end)) |
252b5132 | 1492 | ++ op_end; |
a75214e5 | 1493 | |
252b5132 RH |
1494 | if (* op_end == ',') |
1495 | { | |
1496 | op_end = parse_exp (op_end + 1, & e); | |
1497 | output = frag_more (2); | |
a75214e5 KH |
1498 | |
1499 | fix_new_exp (frag_now, output-frag_now->fr_literal, | |
252b5132 RH |
1500 | 2, & e, 1, BFD_RELOC_MCORE_PCREL_IMM4BY2); |
1501 | } | |
1502 | else | |
1503 | { | |
1504 | as_bad (_("second operand missing")); | |
1505 | output = frag_more (2); | |
1506 | } | |
1507 | break; | |
a75214e5 | 1508 | |
252b5132 RH |
1509 | case JC: |
1510 | input_line_pointer = parse_exp (op_end + 1, & e); | |
2d473ce9 | 1511 | op_end = input_line_pointer; |
a75214e5 | 1512 | |
252b5132 | 1513 | output = frag_var (rs_machine_dependent, |
93c2a809 AM |
1514 | md_relax_table[C (COND_JUMP, DISP32)].rlx_length, |
1515 | md_relax_table[C (COND_JUMP, DISP12)].rlx_length, | |
252b5132 RH |
1516 | C (COND_JUMP, 0), e.X_add_symbol, e.X_add_number, 0); |
1517 | isize = C32_LEN; | |
1518 | break; | |
a75214e5 | 1519 | |
252b5132 RH |
1520 | case JU: |
1521 | input_line_pointer = parse_exp (op_end + 1, & e); | |
2d473ce9 NC |
1522 | op_end = input_line_pointer; |
1523 | ||
252b5132 | 1524 | output = frag_var (rs_machine_dependent, |
93c2a809 AM |
1525 | md_relax_table[C (UNCD_JUMP, DISP32)].rlx_length, |
1526 | md_relax_table[C (UNCD_JUMP, DISP12)].rlx_length, | |
252b5132 RH |
1527 | C (UNCD_JUMP, 0), e.X_add_symbol, e.X_add_number, 0); |
1528 | isize = U32_LEN; | |
1529 | break; | |
a75214e5 | 1530 | |
252b5132 RH |
1531 | case JL: |
1532 | inst = MCORE_INST_JSRI; /* jsri */ | |
1533 | input_line_pointer = parse_rt (op_end + 1, & output, 1, & e); | |
bcef92fa | 1534 | /* parse_rt() calls frag_more for us. */ |
2d473ce9 | 1535 | op_end = input_line_pointer; |
a75214e5 KH |
1536 | |
1537 | /* Only do this if we know how to do it ... */ | |
252b5132 RH |
1538 | if (e.X_op != O_absent && do_jsri2bsr) |
1539 | { | |
1540 | /* Look at adding the R_PCREL_JSRIMM11BY2. */ | |
a75214e5 | 1541 | fix_new_exp (frag_now, output-frag_now->fr_literal, |
252b5132 RH |
1542 | 2, & e, 1, BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2); |
1543 | } | |
1544 | break; | |
1545 | ||
1546 | case RSI: /* SI, but imm becomes 32-imm */ | |
1547 | op_end = parse_reg (op_end + 1, & reg); | |
1548 | inst |= reg; | |
a75214e5 | 1549 | |
252b5132 | 1550 | /* Skip whitespace. */ |
3882b010 | 1551 | while (ISSPACE (* op_end)) |
252b5132 | 1552 | ++ op_end; |
a75214e5 | 1553 | |
252b5132 RH |
1554 | if (* op_end == ',') |
1555 | { | |
1556 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
a75214e5 | 1557 | |
252b5132 RH |
1558 | reg = 32 - reg; |
1559 | inst |= reg << 4; | |
1560 | } | |
1561 | else | |
1562 | as_bad (_("second operand missing")); | |
a75214e5 | 1563 | |
252b5132 RH |
1564 | output = frag_more (2); |
1565 | break; | |
a75214e5 | 1566 | |
252b5132 RH |
1567 | case DO21: /* O2, dup rd, lit must be 1 */ |
1568 | op_end = parse_reg (op_end + 1, & reg); | |
1569 | inst |= reg; | |
1570 | inst |= reg << 4; | |
a75214e5 | 1571 | |
252b5132 | 1572 | /* Skip whitespace. */ |
3882b010 | 1573 | while (ISSPACE (* op_end)) |
252b5132 | 1574 | ++ op_end; |
a75214e5 | 1575 | |
252b5132 RH |
1576 | if (* op_end == ',') |
1577 | { | |
1578 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
a75214e5 | 1579 | |
252b5132 RH |
1580 | if (reg != 1) |
1581 | as_bad (_("second operand must be 1")); | |
1582 | } | |
1583 | else | |
1584 | as_bad (_("second operand missing")); | |
a75214e5 | 1585 | |
252b5132 RH |
1586 | output = frag_more (2); |
1587 | break; | |
a75214e5 | 1588 | |
252b5132 RH |
1589 | case SIa: |
1590 | op_end = parse_reg (op_end + 1, & reg); | |
1591 | inst |= reg; | |
a75214e5 | 1592 | |
252b5132 | 1593 | /* Skip whitespace. */ |
3882b010 | 1594 | while (ISSPACE (* op_end)) |
252b5132 | 1595 | ++ op_end; |
a75214e5 | 1596 | |
252b5132 RH |
1597 | if (* op_end == ',') |
1598 | { | |
1599 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
1600 | ||
1601 | if (reg == 0) | |
1602 | as_bad (_("zero used as immediate value")); | |
a75214e5 | 1603 | |
252b5132 RH |
1604 | inst |= reg << 4; |
1605 | } | |
1606 | else | |
1607 | as_bad (_("second operand missing")); | |
a75214e5 | 1608 | |
252b5132 RH |
1609 | output = frag_more (2); |
1610 | break; | |
1611 | ||
bec50466 NC |
1612 | case OPSR: |
1613 | if (cpu == M210) | |
1614 | { | |
1615 | as_bad (_("M340 specific opcode used when assembling for M210")); | |
1616 | break; | |
1617 | } | |
a75214e5 | 1618 | |
bec50466 | 1619 | op_end = parse_psrmod (op_end + 1, & reg); |
a75214e5 | 1620 | |
bec50466 NC |
1621 | /* Look for further selectors. */ |
1622 | while (* op_end == ',') | |
1623 | { | |
1624 | unsigned value; | |
a75214e5 | 1625 | |
bec50466 | 1626 | op_end = parse_psrmod (op_end + 1, & value); |
a75214e5 | 1627 | |
bec50466 NC |
1628 | if (value & reg) |
1629 | as_bad (_("duplicated psr bit specifier")); | |
a75214e5 | 1630 | |
bec50466 NC |
1631 | reg |= value; |
1632 | } | |
a75214e5 | 1633 | |
bec50466 NC |
1634 | if (reg > 8) |
1635 | as_bad (_("`af' must appear alone")); | |
a75214e5 | 1636 | |
bec50466 NC |
1637 | inst |= (reg & 0x7); |
1638 | output = frag_more (2); | |
1639 | break; | |
a75214e5 | 1640 | |
252b5132 RH |
1641 | default: |
1642 | as_bad (_("unimplemented opcode \"%s\""), name); | |
1643 | } | |
2d473ce9 NC |
1644 | |
1645 | /* Drop whitespace after all the operands have been parsed. */ | |
3882b010 | 1646 | while (ISSPACE (* op_end)) |
2d473ce9 NC |
1647 | op_end ++; |
1648 | ||
a75214e5 | 1649 | /* Give warning message if the insn has more operands than required. */ |
2d473ce9 NC |
1650 | if (strcmp (op_end, opcode->name) && strcmp (op_end, "")) |
1651 | as_warn (_("ignoring operands: %s "), op_end); | |
a75214e5 | 1652 | |
b8a40f53 NC |
1653 | output[0] = INST_BYTE0 (inst); |
1654 | output[1] = INST_BYTE1 (inst); | |
a75214e5 | 1655 | |
252b5132 RH |
1656 | check_literals (opcode->transfer, isize); |
1657 | } | |
1658 | ||
1659 | symbolS * | |
1660 | md_undefined_symbol (name) | |
aa699a2c | 1661 | char *name ATTRIBUTE_UNUSED; |
252b5132 RH |
1662 | { |
1663 | return 0; | |
1664 | } | |
1665 | ||
1666 | void | |
1667 | md_mcore_end () | |
1668 | { | |
1669 | dump_literals (0); | |
1670 | subseg_set (text_section, 0); | |
1671 | } | |
1672 | ||
1673 | /* Various routines to kill one day. */ | |
1674 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1675 | #define MAX_LITTLENUMS 6 | |
1676 | ||
1677 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1678 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1679 | emitted is stored in *sizeP. An error message is returned, or NULL on OK.*/ | |
1680 | char * | |
1681 | md_atof (type, litP, sizeP) | |
1682 | int type; | |
1683 | char * litP; | |
1684 | int * sizeP; | |
1685 | { | |
1686 | int prec; | |
1687 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
b8a40f53 | 1688 | int i; |
252b5132 | 1689 | char * t; |
252b5132 RH |
1690 | |
1691 | switch (type) | |
1692 | { | |
1693 | case 'f': | |
1694 | case 'F': | |
1695 | case 's': | |
1696 | case 'S': | |
1697 | prec = 2; | |
1698 | break; | |
1699 | ||
1700 | case 'd': | |
1701 | case 'D': | |
1702 | case 'r': | |
1703 | case 'R': | |
1704 | prec = 4; | |
1705 | break; | |
1706 | ||
1707 | case 'x': | |
1708 | case 'X': | |
1709 | prec = 6; | |
1710 | break; | |
1711 | ||
1712 | case 'p': | |
1713 | case 'P': | |
1714 | prec = 6; | |
1715 | break; | |
1716 | ||
1717 | default: | |
1718 | *sizeP = 0; | |
1719 | return _("Bad call to MD_NTOF()"); | |
1720 | } | |
a75214e5 | 1721 | |
252b5132 | 1722 | t = atof_ieee (input_line_pointer, type, words); |
a75214e5 | 1723 | |
252b5132 RH |
1724 | if (t) |
1725 | input_line_pointer = t; | |
1726 | ||
1727 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
a75214e5 | 1728 | |
bec50466 NC |
1729 | if (! target_big_endian) |
1730 | { | |
1731 | for (i = prec - 1; i >= 0; i--) | |
1732 | { | |
1733 | md_number_to_chars (litP, (valueT) words[i], | |
1734 | sizeof (LITTLENUM_TYPE)); | |
1735 | litP += sizeof (LITTLENUM_TYPE); | |
1736 | } | |
1737 | } | |
1738 | else | |
b8a40f53 NC |
1739 | for (i = 0; i < prec; i++) |
1740 | { | |
1741 | md_number_to_chars (litP, (valueT) words[i], | |
1742 | sizeof (LITTLENUM_TYPE)); | |
1743 | litP += sizeof (LITTLENUM_TYPE); | |
1744 | } | |
a75214e5 | 1745 | |
252b5132 RH |
1746 | return 0; |
1747 | } | |
1748 | \f | |
5a38dc70 | 1749 | const char * md_shortopts = ""; |
252b5132 | 1750 | |
b8a40f53 NC |
1751 | #define OPTION_JSRI2BSR_ON (OPTION_MD_BASE + 0) |
1752 | #define OPTION_JSRI2BSR_OFF (OPTION_MD_BASE + 1) | |
1753 | #define OPTION_SIFILTER_ON (OPTION_MD_BASE + 2) | |
1754 | #define OPTION_SIFILTER_OFF (OPTION_MD_BASE + 3) | |
bec50466 NC |
1755 | #define OPTION_CPU (OPTION_MD_BASE + 4) |
1756 | #define OPTION_EB (OPTION_MD_BASE + 5) | |
1757 | #define OPTION_EL (OPTION_MD_BASE + 6) | |
252b5132 RH |
1758 | |
1759 | struct option md_longopts[] = | |
1760 | { | |
252b5132 RH |
1761 | { "no-jsri2bsr", no_argument, NULL, OPTION_JSRI2BSR_OFF}, |
1762 | { "jsri2bsr", no_argument, NULL, OPTION_JSRI2BSR_ON}, | |
1763 | { "sifilter", no_argument, NULL, OPTION_SIFILTER_ON}, | |
1764 | { "no-sifilter", no_argument, NULL, OPTION_SIFILTER_OFF}, | |
bec50466 NC |
1765 | { "cpu", required_argument, NULL, OPTION_CPU}, |
1766 | { "EB", no_argument, NULL, OPTION_EB}, | |
1767 | { "EL", no_argument, NULL, OPTION_EL}, | |
252b5132 RH |
1768 | { NULL, no_argument, NULL, 0} |
1769 | }; | |
1770 | ||
1771 | size_t md_longopts_size = sizeof (md_longopts); | |
1772 | ||
1773 | int | |
1774 | md_parse_option (c, arg) | |
1775 | int c; | |
1776 | char * arg; | |
1777 | { | |
252b5132 RH |
1778 | switch (c) |
1779 | { | |
bec50466 NC |
1780 | case OPTION_CPU: |
1781 | if (streq (arg, "210")) | |
1782 | { | |
1783 | cpu = M210; | |
1784 | target_big_endian = 1; | |
1785 | } | |
1786 | else if (streq (arg, "340")) | |
1787 | cpu = M340; | |
1788 | else | |
5f8075fa | 1789 | as_warn (_("unrecognised cpu type '%s'"), arg); |
bec50466 | 1790 | break; |
a75214e5 | 1791 | |
bec50466 NC |
1792 | case OPTION_EB: target_big_endian = 1; break; |
1793 | case OPTION_EL: target_big_endian = 0; cpu = M340; break; | |
252b5132 RH |
1794 | case OPTION_JSRI2BSR_ON: do_jsri2bsr = 1; break; |
1795 | case OPTION_JSRI2BSR_OFF: do_jsri2bsr = 0; break; | |
1796 | case OPTION_SIFILTER_ON: sifilter_mode = 1; break; | |
1797 | case OPTION_SIFILTER_OFF: sifilter_mode = 0; break; | |
1798 | default: return 0; | |
1799 | } | |
1800 | ||
1801 | return 1; | |
1802 | } | |
1803 | ||
1804 | void | |
1805 | md_show_usage (stream) | |
1806 | FILE * stream; | |
1807 | { | |
1808 | fprintf (stream, _("\ | |
1809 | MCORE specific options:\n\ | |
b8a40f53 | 1810 | -{no-}jsri2bsr {dis}able jsri to bsr transformation (def: dis)\n\ |
bec50466 NC |
1811 | -{no-}sifilter {dis}able silicon filter behavior (def: dis)\n\ |
1812 | -cpu=[210|340] select CPU type\n\ | |
1813 | -EB assemble for a big endian system (default)\n\ | |
1814 | -EL assemble for a little endian system\n")); | |
252b5132 RH |
1815 | } |
1816 | \f | |
1817 | int md_short_jump_size; | |
1818 | ||
1819 | void | |
1820 | md_create_short_jump (ptr, from_Nddr, to_Nddr, frag, to_symbol) | |
aa699a2c AM |
1821 | char * ptr ATTRIBUTE_UNUSED; |
1822 | addressT from_Nddr ATTRIBUTE_UNUSED; | |
1823 | addressT to_Nddr ATTRIBUTE_UNUSED; | |
1824 | fragS * frag ATTRIBUTE_UNUSED; | |
1825 | symbolS * to_symbol ATTRIBUTE_UNUSED; | |
252b5132 RH |
1826 | { |
1827 | as_fatal (_("failed sanity check: short_jump")); | |
1828 | } | |
1829 | ||
1830 | void | |
1831 | md_create_long_jump (ptr, from_Nddr, to_Nddr, frag, to_symbol) | |
aa699a2c AM |
1832 | char * ptr ATTRIBUTE_UNUSED; |
1833 | addressT from_Nddr ATTRIBUTE_UNUSED; | |
1834 | addressT to_Nddr ATTRIBUTE_UNUSED; | |
1835 | fragS * frag ATTRIBUTE_UNUSED; | |
1836 | symbolS * to_symbol ATTRIBUTE_UNUSED; | |
252b5132 RH |
1837 | { |
1838 | as_fatal (_("failed sanity check: long_jump")); | |
1839 | } | |
1840 | ||
1841 | /* Called after relaxing, change the frags so they know how big they are. */ | |
1842 | void | |
1843 | md_convert_frag (abfd, sec, fragP) | |
aa699a2c AM |
1844 | bfd * abfd ATTRIBUTE_UNUSED; |
1845 | segT sec ATTRIBUTE_UNUSED; | |
252b5132 RH |
1846 | register fragS * fragP; |
1847 | { | |
1848 | unsigned char * buffer; | |
1849 | int targ_addr = S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset; | |
a75214e5 | 1850 | |
252b5132 | 1851 | buffer = (unsigned char *) (fragP->fr_fix + fragP->fr_literal); |
252b5132 RH |
1852 | |
1853 | switch (fragP->fr_subtype) | |
1854 | { | |
93c2a809 AM |
1855 | case C (COND_JUMP, DISP12): |
1856 | case C (UNCD_JUMP, DISP12): | |
252b5132 | 1857 | { |
bcef92fa | 1858 | /* Get the address of the end of the instruction. */ |
252b5132 RH |
1859 | int next_inst = fragP->fr_fix + fragP->fr_address + 2; |
1860 | unsigned char t0; | |
1861 | int disp = targ_addr - next_inst; | |
a75214e5 | 1862 | |
252b5132 | 1863 | if (disp & 1) |
b8a40f53 | 1864 | as_bad (_("odd displacement at %x"), next_inst - 2); |
a75214e5 | 1865 | |
252b5132 | 1866 | disp >>= 1; |
a75214e5 | 1867 | |
bec50466 NC |
1868 | if (! target_big_endian) |
1869 | { | |
1870 | t0 = buffer[1] & 0xF8; | |
a75214e5 | 1871 | |
bec50466 | 1872 | md_number_to_chars (buffer, disp, 2); |
a75214e5 | 1873 | |
bec50466 NC |
1874 | buffer[1] = (buffer[1] & 0x07) | t0; |
1875 | } | |
1876 | else | |
b8a40f53 NC |
1877 | { |
1878 | t0 = buffer[0] & 0xF8; | |
a75214e5 | 1879 | |
b8a40f53 | 1880 | md_number_to_chars (buffer, disp, 2); |
a75214e5 | 1881 | |
b8a40f53 NC |
1882 | buffer[0] = (buffer[0] & 0x07) | t0; |
1883 | } | |
a75214e5 | 1884 | |
252b5132 | 1885 | fragP->fr_fix += 2; |
252b5132 RH |
1886 | } |
1887 | break; | |
1888 | ||
93c2a809 | 1889 | case C (COND_JUMP, DISP32): |
252b5132 RH |
1890 | case C (COND_JUMP, UNDEF_WORD_DISP): |
1891 | { | |
1892 | /* A conditional branch wont fit into 12 bits so: | |
1893 | * b!cond 1f | |
1894 | * jmpi 0f | |
1895 | * .align 2 | |
1896 | * 0: .long disp | |
1897 | * 1: | |
1898 | * | |
1899 | * if the b!cond is 4 byte aligned, the literal which would | |
1900 | * go at x+4 will also be aligned. | |
1901 | */ | |
1902 | int first_inst = fragP->fr_fix + fragP->fr_address; | |
1903 | int needpad = (first_inst & 3); | |
1904 | ||
bec50466 NC |
1905 | if (! target_big_endian) |
1906 | buffer[1] ^= 0x08; | |
1907 | else | |
b8a40f53 | 1908 | buffer[0] ^= 0x08; /* Toggle T/F bit */ |
252b5132 RH |
1909 | |
1910 | buffer[2] = INST_BYTE0 (MCORE_INST_JMPI); /* Build jmpi */ | |
1911 | buffer[3] = INST_BYTE1 (MCORE_INST_JMPI); | |
a75214e5 | 1912 | |
252b5132 RH |
1913 | if (needpad) |
1914 | { | |
bec50466 NC |
1915 | if (! target_big_endian) |
1916 | { | |
1917 | buffer[0] = 4; /* branch over jmpi, pad, and ptr */ | |
1918 | buffer[2] = 1; /* jmpi offset of 1 gets the pointer */ | |
1919 | } | |
1920 | else | |
b8a40f53 NC |
1921 | { |
1922 | buffer[1] = 4; /* branch over jmpi, pad, and ptr */ | |
1923 | buffer[3] = 1; /* jmpi offset of 1 gets the pointer */ | |
1924 | } | |
a75214e5 | 1925 | |
252b5132 RH |
1926 | buffer[4] = 0; /* alignment/pad */ |
1927 | buffer[5] = 0; | |
1928 | buffer[6] = 0; /* space for 32 bit address */ | |
1929 | buffer[7] = 0; | |
1930 | buffer[8] = 0; | |
1931 | buffer[9] = 0; | |
a75214e5 | 1932 | |
252b5132 RH |
1933 | /* Make reloc for the long disp */ |
1934 | fix_new (fragP, fragP->fr_fix + 6, 4, | |
1935 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
a75214e5 | 1936 | |
252b5132 RH |
1937 | fragP->fr_fix += C32_LEN; |
1938 | } | |
1939 | else | |
1940 | { | |
1941 | /* See comment below about this given gas' limitations for | |
1942 | shrinking the fragment. '3' is the amount of code that | |
1943 | we inserted here, but '4' is right for the space we reserved | |
a75214e5 | 1944 | for this fragment. */ |
bec50466 NC |
1945 | if (! target_big_endian) |
1946 | { | |
1947 | buffer[0] = 3; /* branch over jmpi, and ptr */ | |
1948 | buffer[2] = 0; /* jmpi offset of 0 gets the pointer */ | |
1949 | } | |
1950 | else | |
b8a40f53 NC |
1951 | { |
1952 | buffer[1] = 3; /* branch over jmpi, and ptr */ | |
1953 | buffer[3] = 0; /* jmpi offset of 0 gets the pointer */ | |
1954 | } | |
a75214e5 | 1955 | |
252b5132 RH |
1956 | buffer[4] = 0; /* space for 32 bit address */ |
1957 | buffer[5] = 0; | |
1958 | buffer[6] = 0; | |
1959 | buffer[7] = 0; | |
a75214e5 | 1960 | |
252b5132 RH |
1961 | /* Make reloc for the long disp. */ |
1962 | fix_new (fragP, fragP->fr_fix + 4, 4, | |
1963 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
1964 | fragP->fr_fix += C32_LEN; | |
1965 | ||
b8a40f53 NC |
1966 | /* Frag is actually shorter (see the other side of this ifdef) |
1967 | but gas isn't prepared for that. We have to re-adjust | |
a75214e5 | 1968 | the branch displacement so that it goes beyond the |
252b5132 RH |
1969 | full length of the fragment, not just what we actually |
1970 | filled in. */ | |
bec50466 NC |
1971 | if (! target_big_endian) |
1972 | buffer[0] = 4; /* jmpi, ptr, and the 'tail pad' */ | |
1973 | else | |
b8a40f53 | 1974 | buffer[1] = 4; /* jmpi, ptr, and the 'tail pad' */ |
252b5132 | 1975 | } |
252b5132 RH |
1976 | } |
1977 | break; | |
1978 | ||
93c2a809 | 1979 | case C (UNCD_JUMP, DISP32): |
252b5132 RH |
1980 | case C (UNCD_JUMP, UNDEF_WORD_DISP): |
1981 | { | |
1982 | /* An unconditional branch will not fit in 12 bits, make code which | |
1983 | looks like: | |
1984 | jmpi 0f | |
1985 | .align 2 | |
1986 | 0: .long disp | |
1987 | we need a pad if "first_inst" is 4 byte aligned. | |
1988 | [because the natural literal place is x + 2] */ | |
1989 | int first_inst = fragP->fr_fix + fragP->fr_address; | |
1990 | int needpad = !(first_inst & 3); | |
1991 | ||
1992 | buffer[0] = INST_BYTE0 (MCORE_INST_JMPI); /* Build jmpi */ | |
1993 | buffer[1] = INST_BYTE1 (MCORE_INST_JMPI); | |
1994 | ||
1995 | if (needpad) | |
1996 | { | |
bec50466 NC |
1997 | if (! target_big_endian) |
1998 | buffer[0] = 1; /* jmpi offset of 1 since padded */ | |
1999 | else | |
b8a40f53 | 2000 | buffer[1] = 1; /* jmpi offset of 1 since padded */ |
252b5132 RH |
2001 | buffer[2] = 0; /* alignment */ |
2002 | buffer[3] = 0; | |
2003 | buffer[4] = 0; /* space for 32 bit address */ | |
2004 | buffer[5] = 0; | |
2005 | buffer[6] = 0; | |
2006 | buffer[7] = 0; | |
a75214e5 | 2007 | |
bcef92fa | 2008 | /* Make reloc for the long disp. */ |
252b5132 RH |
2009 | fix_new (fragP, fragP->fr_fix + 4, 4, |
2010 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
a75214e5 | 2011 | |
252b5132 RH |
2012 | fragP->fr_fix += U32_LEN; |
2013 | } | |
2014 | else | |
2015 | { | |
bec50466 NC |
2016 | if (! target_big_endian) |
2017 | buffer[0] = 0; /* jmpi offset of 0 if no pad */ | |
2018 | else | |
b8a40f53 | 2019 | buffer[1] = 0; /* jmpi offset of 0 if no pad */ |
252b5132 RH |
2020 | buffer[2] = 0; /* space for 32 bit address */ |
2021 | buffer[3] = 0; | |
2022 | buffer[4] = 0; | |
2023 | buffer[5] = 0; | |
a75214e5 | 2024 | |
bcef92fa | 2025 | /* Make reloc for the long disp. */ |
252b5132 RH |
2026 | fix_new (fragP, fragP->fr_fix + 2, 4, |
2027 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
2028 | fragP->fr_fix += U32_LEN; | |
2029 | } | |
252b5132 RH |
2030 | } |
2031 | break; | |
2032 | ||
2033 | default: | |
2034 | abort (); | |
2035 | } | |
2036 | } | |
2037 | ||
2038 | /* Applies the desired value to the specified location. | |
2039 | Also sets up addends for 'rela' type relocations. */ | |
94f592af NC |
2040 | |
2041 | void | |
2042 | md_apply_fix3 (fixP, valP, segment) | |
252b5132 | 2043 | fixS * fixP; |
94f592af | 2044 | valueT * valP; |
aa699a2c | 2045 | segT segment ATTRIBUTE_UNUSED; |
252b5132 RH |
2046 | { |
2047 | char * buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
2048 | char * file = fixP->fx_file ? fixP->fx_file : _("unknown"); | |
2049 | const char * symname; | |
2050 | /* Note: use offsetT because it is signed, valueT is unsigned. */ | |
a161fe53 | 2051 | offsetT val = *valP; |
a75214e5 | 2052 | |
252b5132 RH |
2053 | symname = fixP->fx_addsy ? S_GET_NAME (fixP->fx_addsy) : _("<unknown>"); |
2054 | /* Save this for the addend in the relocation record. */ | |
2055 | fixP->fx_addnumber = val; | |
2056 | ||
a161fe53 | 2057 | if (fixP->fx_addsy != NULL) |
252b5132 | 2058 | { |
252b5132 RH |
2059 | #ifdef OBJ_ELF |
2060 | /* For ELF we can just return and let the reloc that will be generated | |
2061 | take care of everything. For COFF we still have to insert 'val' | |
2062 | into the insn since the addend field will be ignored. */ | |
94f592af | 2063 | return; |
252b5132 RH |
2064 | #endif |
2065 | } | |
2066 | else | |
2067 | fixP->fx_done = 1; | |
a75214e5 | 2068 | |
252b5132 RH |
2069 | switch (fixP->fx_r_type) |
2070 | { | |
2071 | case BFD_RELOC_MCORE_PCREL_IMM11BY2: /* second byte of 2 byte opcode */ | |
2072 | if ((val & 1) != 0) | |
2073 | as_bad_where (file, fixP->fx_line, | |
aa699a2c | 2074 | _("odd distance branch (0x%lx bytes)"), (long) val); |
252b5132 RH |
2075 | val /= 2; |
2076 | if (((val & ~0x3ff) != 0) && ((val | 0x3ff) != -1)) | |
2077 | as_bad_where (file, fixP->fx_line, | |
aa699a2c AM |
2078 | _("pcrel for branch to %s too far (0x%lx)"), |
2079 | symname, (long) val); | |
bec50466 NC |
2080 | if (target_big_endian) |
2081 | { | |
2082 | buf[0] |= ((val >> 8) & 0x7); | |
2083 | buf[1] |= (val & 0xff); | |
2084 | } | |
2085 | else | |
2086 | { | |
eaa15ab8 NC |
2087 | buf[1] |= ((val >> 8) & 0x7); |
2088 | buf[0] |= (val & 0xff); | |
bec50466 | 2089 | } |
b8a40f53 | 2090 | break; |
252b5132 RH |
2091 | |
2092 | case BFD_RELOC_MCORE_PCREL_IMM8BY4: /* lower 8 bits of 2 byte opcode */ | |
2093 | val += 3; | |
2094 | val /= 4; | |
2095 | if (val & ~0xff) | |
2096 | as_bad_where (file, fixP->fx_line, | |
aa699a2c AM |
2097 | _("pcrel for lrw/jmpi/jsri to %s too far (0x%lx)"), |
2098 | symname, (long) val); | |
bec50466 NC |
2099 | else if (! target_big_endian) |
2100 | buf[0] |= (val & 0xff); | |
252b5132 RH |
2101 | else |
2102 | buf[1] |= (val & 0xff); | |
b8a40f53 | 2103 | break; |
252b5132 RH |
2104 | |
2105 | case BFD_RELOC_MCORE_PCREL_IMM4BY2: /* loopt instruction */ | |
2106 | if ((val < -32) || (val > -2)) | |
2107 | as_bad_where (file, fixP->fx_line, | |
aa699a2c | 2108 | _("pcrel for loopt too far (0x%lx)"), (long) val); |
252b5132 | 2109 | val /= 2; |
bec50466 NC |
2110 | if (! target_big_endian) |
2111 | buf[0] |= (val & 0xf); | |
2112 | else | |
2d473ce9 | 2113 | buf[1] |= (val & 0xf); |
252b5132 RH |
2114 | break; |
2115 | ||
2116 | case BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2: | |
2117 | /* Conditional linker map jsri to bsr. */ | |
a75214e5 | 2118 | /* If its a local target and close enough, fix it. |
5f8075fa | 2119 | NB: >= -2k for backwards bsr; < 2k for forwards... */ |
252b5132 RH |
2120 | if (fixP->fx_addsy == 0 && val >= -2048 && val < 2048) |
2121 | { | |
2122 | long nval = (val / 2) & 0x7ff; | |
2123 | nval |= MCORE_INST_BSR; | |
a75214e5 | 2124 | |
252b5132 | 2125 | /* REPLACE the instruction, don't just modify it. */ |
b8a40f53 NC |
2126 | buf[0] = INST_BYTE0 (nval); |
2127 | buf[1] = INST_BYTE1 (nval); | |
252b5132 RH |
2128 | } |
2129 | else | |
2130 | fixP->fx_done = 0; | |
2131 | break; | |
2132 | ||
2133 | case BFD_RELOC_MCORE_PCREL_32: | |
2134 | case BFD_RELOC_VTABLE_INHERIT: | |
2135 | case BFD_RELOC_VTABLE_ENTRY: | |
2136 | fixP->fx_done = 0; | |
2137 | break; | |
a75214e5 | 2138 | |
252b5132 RH |
2139 | default: |
2140 | if (fixP->fx_addsy != NULL) | |
2141 | { | |
2142 | /* If the fix is an absolute reloc based on a symbol's | |
2143 | address, then it cannot be resolved until the final link. */ | |
2144 | fixP->fx_done = 0; | |
2145 | } | |
a75214e5 | 2146 | #ifdef OBJ_ELF |
252b5132 RH |
2147 | else |
2148 | #endif | |
2149 | { | |
2150 | if (fixP->fx_size == 4) | |
b8a40f53 | 2151 | ; |
252b5132 | 2152 | else if (fixP->fx_size == 2 && val >= -32768 && val <= 32767) |
b8a40f53 | 2153 | ; |
252b5132 | 2154 | else if (fixP->fx_size == 1 && val >= -256 && val <= 255) |
b8a40f53 | 2155 | ; |
252b5132 RH |
2156 | else |
2157 | abort (); | |
b8a40f53 | 2158 | md_number_to_chars (buf, val, fixP->fx_size); |
252b5132 RH |
2159 | } |
2160 | break; | |
2161 | } | |
252b5132 RH |
2162 | } |
2163 | ||
2164 | void | |
2165 | md_operand (expressionP) | |
2166 | expressionS * expressionP; | |
2167 | { | |
2168 | /* Ignore leading hash symbol, if poresent. */ | |
2169 | if (* input_line_pointer == '#') | |
2170 | { | |
2171 | input_line_pointer ++; | |
2172 | expression (expressionP); | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | int md_long_jump_size; | |
2177 | ||
2178 | /* Called just before address relaxation, return the length | |
2179 | by which a fragment must grow to reach it's destination. */ | |
2180 | int | |
2181 | md_estimate_size_before_relax (fragP, segment_type) | |
2182 | register fragS * fragP; | |
2183 | register segT segment_type; | |
2184 | { | |
2185 | switch (fragP->fr_subtype) | |
2186 | { | |
93c2a809 AM |
2187 | default: |
2188 | abort (); | |
2189 | ||
252b5132 RH |
2190 | case C (UNCD_JUMP, UNDEF_DISP): |
2191 | /* Used to be a branch to somewhere which was unknown. */ | |
2192 | if (!fragP->fr_symbol) | |
2193 | { | |
93c2a809 | 2194 | fragP->fr_subtype = C (UNCD_JUMP, DISP12); |
252b5132 RH |
2195 | } |
2196 | else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type) | |
2197 | { | |
93c2a809 | 2198 | fragP->fr_subtype = C (UNCD_JUMP, DISP12); |
252b5132 RH |
2199 | } |
2200 | else | |
2201 | { | |
2202 | fragP->fr_subtype = C (UNCD_JUMP, UNDEF_WORD_DISP); | |
252b5132 RH |
2203 | } |
2204 | break; | |
2205 | ||
252b5132 | 2206 | case C (COND_JUMP, UNDEF_DISP): |
a75214e5 | 2207 | /* Used to be a branch to somewhere which was unknown. */ |
252b5132 RH |
2208 | if (fragP->fr_symbol |
2209 | && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) | |
2210 | { | |
2211 | /* Got a symbol and it's defined in this segment, become byte | |
2212 | sized - maybe it will fix up */ | |
93c2a809 | 2213 | fragP->fr_subtype = C (COND_JUMP, DISP12); |
252b5132 RH |
2214 | } |
2215 | else if (fragP->fr_symbol) | |
2216 | { | |
2217 | /* Its got a segment, but its not ours, so it will always be long. */ | |
2218 | fragP->fr_subtype = C (COND_JUMP, UNDEF_WORD_DISP); | |
252b5132 RH |
2219 | } |
2220 | else | |
2221 | { | |
2222 | /* We know the abs value. */ | |
93c2a809 | 2223 | fragP->fr_subtype = C (COND_JUMP, DISP12); |
252b5132 | 2224 | } |
93c2a809 | 2225 | break; |
252b5132 | 2226 | |
93c2a809 | 2227 | case C (UNCD_JUMP, DISP12): |
e66457fb | 2228 | case C (UNCD_JUMP, DISP32): |
93c2a809 AM |
2229 | case C (UNCD_JUMP, UNDEF_WORD_DISP): |
2230 | case C (COND_JUMP, DISP12): | |
e66457fb | 2231 | case C (COND_JUMP, DISP32): |
93c2a809 AM |
2232 | case C (COND_JUMP, UNDEF_WORD_DISP): |
2233 | /* When relaxing a section for the second time, we don't need to | |
e66457fb | 2234 | do anything besides return the current size. */ |
252b5132 RH |
2235 | break; |
2236 | } | |
a75214e5 | 2237 | |
606ab118 | 2238 | return md_relax_table[fragP->fr_subtype].rlx_length; |
252b5132 RH |
2239 | } |
2240 | ||
bcef92fa | 2241 | /* Put number into target byte order. */ |
252b5132 RH |
2242 | void |
2243 | md_number_to_chars (ptr, use, nbytes) | |
2244 | char * ptr; | |
2245 | valueT use; | |
2246 | int nbytes; | |
2247 | { | |
bec50466 NC |
2248 | if (! target_big_endian) |
2249 | switch (nbytes) | |
2250 | { | |
2251 | case 4: ptr[3] = (use >> 24) & 0xff; /* fall through */ | |
2252 | case 3: ptr[2] = (use >> 16) & 0xff; /* fall through */ | |
2253 | case 2: ptr[1] = (use >> 8) & 0xff; /* fall through */ | |
2254 | case 1: ptr[0] = (use >> 0) & 0xff; break; | |
2255 | default: abort (); | |
2256 | } | |
2257 | else | |
b8a40f53 NC |
2258 | switch (nbytes) |
2259 | { | |
2260 | case 4: *ptr++ = (use >> 24) & 0xff; /* fall through */ | |
2261 | case 3: *ptr++ = (use >> 16) & 0xff; /* fall through */ | |
2262 | case 2: *ptr++ = (use >> 8) & 0xff; /* fall through */ | |
2263 | case 1: *ptr++ = (use >> 0) & 0xff; break; | |
2264 | default: abort (); | |
2265 | } | |
252b5132 RH |
2266 | } |
2267 | ||
2268 | /* Round up a section size to the appropriate boundary. */ | |
2269 | valueT | |
2270 | md_section_align (segment, size) | |
aa699a2c | 2271 | segT segment ATTRIBUTE_UNUSED; |
252b5132 RH |
2272 | valueT size; |
2273 | { | |
2274 | return size; /* Byte alignment is fine */ | |
2275 | } | |
2276 | ||
252b5132 RH |
2277 | /* The location from which a PC relative jump should be calculated, |
2278 | given a PC relative reloc. */ | |
2279 | long | |
2280 | md_pcrel_from_section (fixp, sec) | |
2281 | fixS * fixp; | |
aa699a2c | 2282 | segT sec ATTRIBUTE_UNUSED; |
252b5132 RH |
2283 | { |
2284 | #ifdef OBJ_ELF | |
2285 | /* If the symbol is undefined or defined in another section | |
2286 | we leave the add number alone for the linker to fix it later. | |
a75214e5 | 2287 | Only account for the PC pre-bump (which is 2 bytes on the MCore). */ |
252b5132 RH |
2288 | if (fixp->fx_addsy != (symbolS *) NULL |
2289 | && (! S_IS_DEFINED (fixp->fx_addsy) | |
2290 | || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) | |
a75214e5 | 2291 | |
252b5132 RH |
2292 | { |
2293 | assert (fixp->fx_size == 2); /* must be an insn */ | |
2294 | return fixp->fx_size; | |
2295 | } | |
2296 | #endif | |
2297 | ||
a75214e5 | 2298 | /* The case where we are going to resolve things... */ |
252b5132 RH |
2299 | return fixp->fx_size + fixp->fx_where + fixp->fx_frag->fr_address; |
2300 | } | |
2301 | ||
2302 | #define F(SZ,PCREL) (((SZ) << 1) + (PCREL)) | |
2303 | #define MAP(SZ,PCREL,TYPE) case F (SZ, PCREL): code = (TYPE); break | |
2304 | ||
2305 | arelent * | |
2306 | tc_gen_reloc (section, fixp) | |
aa699a2c | 2307 | asection * section ATTRIBUTE_UNUSED; |
252b5132 RH |
2308 | fixS * fixp; |
2309 | { | |
2310 | arelent * rel; | |
2311 | bfd_reloc_code_real_type code; | |
252b5132 RH |
2312 | |
2313 | switch (fixp->fx_r_type) | |
2314 | { | |
a75214e5 | 2315 | /* These confuse the size/pcrel macro approach. */ |
252b5132 RH |
2316 | case BFD_RELOC_VTABLE_INHERIT: |
2317 | case BFD_RELOC_VTABLE_ENTRY: | |
2318 | case BFD_RELOC_MCORE_PCREL_IMM4BY2: | |
2319 | case BFD_RELOC_MCORE_PCREL_IMM8BY4: | |
2320 | case BFD_RELOC_MCORE_PCREL_IMM11BY2: | |
2321 | case BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2: | |
a75214e5 | 2322 | case BFD_RELOC_RVA: |
252b5132 RH |
2323 | code = fixp->fx_r_type; |
2324 | break; | |
a75214e5 | 2325 | |
252b5132 RH |
2326 | default: |
2327 | switch (F (fixp->fx_size, fixp->fx_pcrel)) | |
5f8075fa AM |
2328 | { |
2329 | MAP (1, 0, BFD_RELOC_8); | |
2330 | MAP (2, 0, BFD_RELOC_16); | |
2331 | MAP (4, 0, BFD_RELOC_32); | |
2332 | MAP (1, 1, BFD_RELOC_8_PCREL); | |
2333 | MAP (2, 1, BFD_RELOC_16_PCREL); | |
2334 | MAP (4, 1, BFD_RELOC_32_PCREL); | |
2335 | default: | |
252b5132 | 2336 | code = fixp->fx_r_type; |
5f8075fa | 2337 | as_bad (_("Can not do %d byte %srelocation"), |
252b5132 | 2338 | fixp->fx_size, |
5f8075fa AM |
2339 | fixp->fx_pcrel ? _("pc-relative") : ""); |
2340 | } | |
252b5132 RH |
2341 | break; |
2342 | } | |
2343 | ||
2344 | rel = (arelent *) xmalloc (sizeof (arelent)); | |
310b5aa2 ILT |
2345 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
2346 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
2347 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; |
2348 | /* Always pass the addend along! */ | |
2349 | rel->addend = fixp->fx_addnumber; | |
2350 | ||
2351 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); | |
a75214e5 | 2352 | |
252b5132 RH |
2353 | if (rel->howto == NULL) |
2354 | { | |
2355 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5f8075fa AM |
2356 | _("Cannot represent relocation type %s"), |
2357 | bfd_get_reloc_code_name (code)); | |
a75214e5 | 2358 | |
252b5132 RH |
2359 | /* Set howto to a garbage value so that we can keep going. */ |
2360 | rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); | |
2361 | assert (rel->howto != NULL); | |
2362 | } | |
2363 | ||
2364 | return rel; | |
2365 | } | |
2366 | ||
2367 | #ifdef OBJ_ELF | |
2368 | /* See whether we need to force a relocation into the output file. | |
2369 | This is used to force out switch and PC relative relocations when | |
2370 | relaxing. */ | |
2371 | int | |
2372 | mcore_force_relocation (fix) | |
2373 | fixS * fix; | |
2374 | { | |
ae6063d4 | 2375 | if (fix->fx_r_type == BFD_RELOC_RVA) |
252b5132 RH |
2376 | return 1; |
2377 | ||
ae6063d4 | 2378 | return generic_force_reloc (fix); |
252b5132 RH |
2379 | } |
2380 | ||
2381 | /* Return true if the fix can be handled by GAS, false if it must | |
2382 | be passed through to the linker. */ | |
b34976b6 | 2383 | bfd_boolean |
252b5132 RH |
2384 | mcore_fix_adjustable (fixP) |
2385 | fixS * fixP; | |
2386 | { | |
252b5132 RH |
2387 | /* We need the symbol name for the VTABLE entries. */ |
2388 | if ( fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
2389 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
2390 | return 0; | |
2391 | ||
2392 | return 1; | |
2393 | } | |
252b5132 | 2394 | #endif /* OBJ_ELF */ |