Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-mcore.c -- Assemble code for M*Core |
5d6255fe | 2 | Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
252b5132 RH |
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 2, 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 | |
d7f1f2b0 ILT |
17 | along with GAS; see the file COPYING. If not, write to the Free |
18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
19 | 02111-1307, USA. */ | |
252b5132 RH |
20 | |
21 | #include <stdio.h> | |
22 | #include "as.h" | |
23 | #include "bfd.h" | |
24 | #include "subsegs.h" | |
25 | #define DEFINE_TABLE | |
26 | #include "../opcodes/mcore-opc.h" | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include <string.h> |
29 | ||
30 | #ifdef OBJ_ELF | |
31 | #include "elf/mcore.h" | |
32 | #endif | |
33 | ||
34 | #ifndef streq | |
35 | #define streq(a,b) (strcmp (a, b) == 0) | |
36 | #endif | |
37 | ||
38 | /* Forward declarations for dumb compilers. */ | |
39 | static void mcore_s_literals PARAMS ((int)); | |
5f8075fa | 40 | static void mcore_pool_count PARAMS ((void (*) (int), int)); |
252b5132 RH |
41 | static void mcore_cons PARAMS ((int)); |
42 | static void mcore_float_cons PARAMS ((int)); | |
43 | static void mcore_stringer PARAMS ((int)); | |
bcef92fa | 44 | static void mcore_fill PARAMS ((int)); |
252b5132 | 45 | static int log2 PARAMS ((unsigned int)); |
9cac79d3 NC |
46 | static char * parse_reg PARAMS ((char *, unsigned *)); |
47 | static char * parse_creg PARAMS ((char *, unsigned *)); | |
48 | static char * parse_exp PARAMS ((char *, expressionS *)); | |
49 | static char * parse_rt PARAMS ((char *, char **, int, expressionS *)); | |
50 | static char * parse_imm PARAMS ((char *, unsigned *, unsigned, unsigned)); | |
51 | static char * parse_mem PARAMS ((char *, unsigned *, unsigned *, unsigned)); | |
bec50466 | 52 | static char * parse_psrmod PARAMS ((char *, unsigned *)); |
252b5132 RH |
53 | static void make_name PARAMS ((char *, char *, int)); |
54 | static int enter_literal PARAMS ((expressionS *, int)); | |
252b5132 RH |
55 | static void dump_literals PARAMS ((int)); |
56 | static void check_literals PARAMS ((int, int)); | |
57 | static void mcore_s_text PARAMS ((int)); | |
58 | static void mcore_s_data PARAMS ((int)); | |
252b5132 | 59 | static void mcore_s_section PARAMS ((int)); |
16b93d88 NC |
60 | static void mcore_s_bss PARAMS ((int)); |
61 | #ifdef OBJ_ELF | |
62 | static void mcore_s_comm PARAMS ((int)); | |
252b5132 RH |
63 | #endif |
64 | ||
65 | /* Several places in this file insert raw instructions into the | |
66 | object. They should use MCORE_INST_XXX macros to get the opcodes | |
67 | and then use these two macros to crack the MCORE_INST value into | |
68 | the appropriate byte values. */ | |
bec50466 NC |
69 | #define INST_BYTE0(x) (target_big_endian ? (((x) >> 8) & 0xFF) : ((x) & 0xFF)) |
70 | #define INST_BYTE1(x) (target_big_endian ? ((x) & 0xFF) : (((x) >> 8) & 0xFF)) | |
252b5132 RH |
71 | |
72 | const char comment_chars[] = "#/"; | |
73 | const char line_separator_chars[] = ";"; | |
74 | const char line_comment_chars[] = "#/"; | |
75 | ||
76 | const int md_reloc_size = 8; | |
77 | ||
eaa15ab8 | 78 | static int do_jsri2bsr = 0; /* Change here from 1 by Cruess 19 August 97. */ |
252b5132 RH |
79 | static int sifilter_mode = 0; |
80 | ||
81 | const char EXP_CHARS[] = "eE"; | |
82 | ||
eaa15ab8 NC |
83 | /* Chars that mean this number is a floating point constant |
84 | As in 0f12.456 | |
85 | or 0d1.2345e12 */ | |
252b5132 RH |
86 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
87 | ||
88 | #define C(what,length) (((what) << 2) + (length)) | |
89 | #define GET_WHAT(x) ((x >> 2)) | |
90 | ||
91 | /* These are the two types of relaxable instruction */ | |
92 | #define COND_JUMP 1 | |
93 | #define UNCD_JUMP 2 | |
94 | ||
95 | #define UNDEF_DISP 0 | |
93c2a809 AM |
96 | #define DISP12 1 |
97 | #define DISP32 2 | |
98 | #define UNDEF_WORD_DISP 3 | |
252b5132 RH |
99 | |
100 | #define C12_LEN 2 | |
101 | #define C32_LEN 10 /* allow for align */ | |
102 | #define U12_LEN 2 | |
103 | #define U32_LEN 8 /* allow for align */ | |
104 | ||
bec50466 NC |
105 | typedef enum |
106 | { | |
107 | M210, | |
108 | M340 | |
109 | } | |
110 | cpu_type; | |
111 | ||
112 | cpu_type cpu = M340; | |
252b5132 | 113 | |
eaa15ab8 | 114 | /* Initialize the relax table. */ |
e66457fb AM |
115 | const relax_typeS md_relax_table[] = { |
116 | { 0, 0, 0, 0 }, | |
117 | { 0, 0, 0, 0 }, | |
118 | { 0, 0, 0, 0 }, | |
119 | { 0, 0, 0, 0 }, | |
120 | ||
121 | /* COND_JUMP */ | |
122 | { 0, 0, 0, 0 }, /* UNDEF_DISP */ | |
123 | { 2048, -2046, C12_LEN, C(COND_JUMP, DISP32) }, /* DISP12 */ | |
124 | { 0, 0, C32_LEN, 0 }, /* DISP32 */ | |
125 | { 0, 0, C32_LEN, 0 }, /* UNDEF_WORD_DISP */ | |
126 | ||
127 | /* UNCD_JUMP */ | |
5d6255fe KH |
128 | { 0, 0, 0, 0 }, /* UNDEF_DISP */ |
129 | { 2048, -2046, U12_LEN, C(UNCD_JUMP, DISP32) }, /* DISP12 */ | |
130 | { 0, 0, U32_LEN, 0 }, /* DISP32 */ | |
e66457fb AM |
131 | { 0, 0, U32_LEN, 0 } /* UNDEF_WORD_DISP */ |
132 | ||
252b5132 RH |
133 | }; |
134 | ||
eaa15ab8 | 135 | /* Literal pool data structures. */ |
252b5132 RH |
136 | struct literal |
137 | { | |
138 | unsigned short refcnt; | |
139 | unsigned char ispcrel; | |
140 | unsigned char unused; | |
141 | expressionS e; | |
142 | }; | |
143 | ||
144 | #define MAX_POOL_SIZE (1024/4) | |
145 | static struct literal litpool [MAX_POOL_SIZE]; | |
146 | static unsigned poolsize; | |
147 | static unsigned poolnumber; | |
148 | static unsigned long poolspan; | |
149 | ||
150 | /* SPANPANIC: the point at which we get too scared and force a dump | |
151 | of the literal pool, and perhaps put a branch in place. | |
152 | Calculated as: | |
153 | 1024 span of lrw/jmpi/jsri insn (actually span+1) | |
154 | -2 possible alignment at the insn. | |
155 | -2 possible alignment to get the table aligned. | |
156 | -2 an inserted branch around the table. | |
157 | == 1018 | |
158 | at 1018, we might be in trouble. | |
159 | -- so we have to be smaller than 1018 and since we deal with 2-byte | |
160 | instructions, the next good choice is 1016. | |
161 | -- Note we have a test case that fails when we've got 1018 here. */ | |
eaa15ab8 | 162 | #define SPANPANIC (1016) /* 1024 - 1 entry - 2 byte rounding. */ |
252b5132 RH |
163 | #define SPANCLOSE (900) |
164 | #define SPANEXIT (600) | |
eaa15ab8 | 165 | static symbolS * poolsym; /* label for current pool. */ |
252b5132 | 166 | static char poolname[8]; |
eaa15ab8 | 167 | static struct hash_control * opcode_hash_control; /* Opcode mnemonics. */ |
252b5132 RH |
168 | |
169 | /* This table describes all the machine specific pseudo-ops the assembler | |
170 | has to support. The fields are: | |
171 | Pseudo-op name without dot | |
172 | Function to call to execute this pseudo-op | |
eaa15ab8 | 173 | Integer arg to pass to the function. */ |
252b5132 RH |
174 | const pseudo_typeS md_pseudo_table[] = |
175 | { | |
176 | { "export", s_globl, 0 }, | |
177 | { "import", s_ignore, 0 }, | |
178 | { "literals", mcore_s_literals, 0 }, | |
179 | { "page", listing_eject, 0 }, | |
252b5132 RH |
180 | |
181 | /* The following are to intercept the placement of data into the text | |
182 | section (eg addresses for a switch table), so that the space they | |
183 | occupy can be taken into account when deciding whether or not to | |
184 | dump the current literal pool. | |
185 | XXX - currently we do not cope with the .space and .dcb.d directives. */ | |
186 | { "ascii", mcore_stringer, 0 }, | |
187 | { "asciz", mcore_stringer, 1 }, | |
188 | { "byte", mcore_cons, 1 }, | |
189 | { "dc", mcore_cons, 2 }, | |
190 | { "dc.b", mcore_cons, 1 }, | |
bcef92fa | 191 | { "dc.d", mcore_float_cons, 'd'}, |
252b5132 | 192 | { "dc.l", mcore_cons, 4 }, |
bcef92fa | 193 | { "dc.s", mcore_float_cons, 'f'}, |
252b5132 | 194 | { "dc.w", mcore_cons, 2 }, |
bcef92fa | 195 | { "dc.x", mcore_float_cons, 'x'}, |
252b5132 RH |
196 | { "double", mcore_float_cons, 'd'}, |
197 | { "float", mcore_float_cons, 'f'}, | |
198 | { "hword", mcore_cons, 2 }, | |
199 | { "int", mcore_cons, 4 }, | |
200 | { "long", mcore_cons, 4 }, | |
201 | { "octa", mcore_cons, 16 }, | |
202 | { "quad", mcore_cons, 8 }, | |
203 | { "short", mcore_cons, 2 }, | |
204 | { "single", mcore_float_cons, 'f'}, | |
205 | { "string", mcore_stringer, 1 }, | |
206 | { "word", mcore_cons, 2 }, | |
bcef92fa | 207 | { "fill", mcore_fill, 0 }, |
252b5132 RH |
208 | |
209 | /* Allow for the effect of section changes. */ | |
210 | { "text", mcore_s_text, 0 }, | |
211 | { "data", mcore_s_data, 0 }, | |
16b93d88 NC |
212 | { "bss", mcore_s_bss, 1 }, |
213 | #ifdef OBJ_EF | |
214 | { "comm", mcore_s_comm, 0 }, | |
215 | #endif | |
252b5132 RH |
216 | { "section", mcore_s_section, 0 }, |
217 | { "section.s", mcore_s_section, 0 }, | |
218 | { "sect", mcore_s_section, 0 }, | |
219 | { "sect.s", mcore_s_section, 0 }, | |
a75214e5 | 220 | |
252b5132 RH |
221 | { 0, 0, 0 } |
222 | }; | |
223 | ||
224 | static void | |
225 | mcore_s_literals (ignore) | |
226 | int ignore; | |
227 | { | |
228 | dump_literals (0); | |
229 | demand_empty_rest_of_line (); | |
230 | } | |
231 | ||
5f8075fa AM |
232 | /* Perform FUNC (ARG), and track number of bytes added to frag. */ |
233 | ||
252b5132 | 234 | static void |
5f8075fa AM |
235 | mcore_pool_count (func, arg) |
236 | void (*func) PARAMS ((int)); | |
237 | int arg; | |
252b5132 | 238 | { |
5f8075fa AM |
239 | const fragS *curr_frag = frag_now; |
240 | offsetT added = -frag_now_fix_octets (); | |
a75214e5 | 241 | |
5f8075fa | 242 | (*func) (arg); |
a75214e5 | 243 | |
5f8075fa AM |
244 | while (curr_frag != frag_now) |
245 | { | |
246 | added += curr_frag->fr_fix; | |
247 | curr_frag = curr_frag->fr_next; | |
252b5132 | 248 | } |
a75214e5 | 249 | |
5f8075fa AM |
250 | added += frag_now_fix_octets (); |
251 | poolspan += added; | |
252 | } | |
253 | ||
254 | static void | |
255 | mcore_cons (nbytes) | |
256 | int nbytes; | |
257 | { | |
258 | if (now_seg == text_section) | |
259 | mcore_pool_count (cons, nbytes); | |
260 | else | |
261 | cons (nbytes); | |
252b5132 RH |
262 | |
263 | /* In theory we ought to call check_literals (2,0) here in case | |
264 | we need to dump the literal table. We cannot do this however, | |
265 | as the directives that we are intercepting may be being used | |
266 | to build a switch table, and we must not interfere with its | |
a75214e5 | 267 | contents. Instead we cross our fingers and pray... */ |
252b5132 RH |
268 | } |
269 | ||
270 | static void | |
271 | mcore_float_cons (float_type) | |
272 | int float_type; | |
273 | { | |
274 | if (now_seg == text_section) | |
5f8075fa AM |
275 | mcore_pool_count (float_cons, float_type); |
276 | else | |
277 | float_cons (float_type); | |
a75214e5 | 278 | |
252b5132 RH |
279 | /* See the comment in mcore_cons () about calling check_literals. |
280 | It is unlikely that a switch table will be constructed using | |
281 | floating point values, but it is still likely that an indexed | |
282 | table of floating point constants is being created by these | |
283 | directives, so again we must not interfere with their placement. */ | |
284 | } | |
285 | ||
286 | static void | |
287 | mcore_stringer (append_zero) | |
288 | int append_zero; | |
289 | { | |
290 | if (now_seg == text_section) | |
5f8075fa AM |
291 | mcore_pool_count (stringer, append_zero); |
292 | else | |
293 | stringer (append_zero); | |
252b5132 RH |
294 | |
295 | /* We call check_literals here in case a large number of strings are | |
296 | being placed into the text section with a sequence of stringer | |
297 | directives. In theory we could be upsetting something if these | |
298 | strings are actually in an indexed table instead of referenced by | |
299 | individual labels. Let us hope that that never happens. */ | |
300 | check_literals (2, 0); | |
301 | } | |
302 | ||
bcef92fa NC |
303 | static void |
304 | mcore_fill (unused) | |
305 | int unused; | |
306 | { | |
307 | if (now_seg == text_section) | |
5f8075fa AM |
308 | mcore_pool_count (s_fill, unused); |
309 | else | |
310 | s_fill (unused); | |
bcef92fa | 311 | |
4c1102fd | 312 | check_literals (2, 0); |
bcef92fa NC |
313 | } |
314 | ||
16b93d88 NC |
315 | /* Handle the section changing pseudo-ops. These call through to the |
316 | normal implementations, but they dump the literal pool first. */ | |
252b5132 RH |
317 | static void |
318 | mcore_s_text (ignore) | |
319 | int ignore; | |
320 | { | |
321 | dump_literals (0); | |
a75214e5 | 322 | |
16b93d88 NC |
323 | #ifdef OBJ_ELF |
324 | obj_elf_text (ignore); | |
325 | #else | |
252b5132 | 326 | s_text (ignore); |
16b93d88 | 327 | #endif |
252b5132 RH |
328 | } |
329 | ||
330 | static void | |
331 | mcore_s_data (ignore) | |
332 | int ignore; | |
333 | { | |
334 | dump_literals (0); | |
a75214e5 | 335 | |
16b93d88 NC |
336 | #ifdef OBJ_ELF |
337 | obj_elf_data (ignore); | |
338 | #else | |
252b5132 | 339 | s_data (ignore); |
16b93d88 NC |
340 | #endif |
341 | } | |
342 | ||
343 | static void | |
344 | mcore_s_section (ignore) | |
345 | int ignore; | |
346 | { | |
bcef92fa NC |
347 | /* Scan forwards to find the name of the section. If the section |
348 | being switched to is ".line" then this is a DWARF1 debug section | |
349 | which is arbitarily placed inside generated code. In this case | |
350 | do not dump the literal pool because it is a) inefficient and | |
351 | b) would require the generation of extra code to jump around the | |
352 | pool. */ | |
353 | char * ilp = input_line_pointer; | |
354 | ||
3882b010 | 355 | while (*ilp != 0 && ISSPACE (*ilp)) |
bcef92fa NC |
356 | ++ ilp; |
357 | ||
358 | if (strncmp (ilp, ".line", 5) == 0 | |
3882b010 | 359 | && (ISSPACE (ilp[5]) || *ilp == '\n' || *ilp == '\r')) |
bcef92fa NC |
360 | ; |
361 | else | |
362 | dump_literals (0); | |
16b93d88 NC |
363 | |
364 | #ifdef OBJ_ELF | |
365 | obj_elf_section (ignore); | |
366 | #endif | |
367 | #ifdef OBJ_COFF | |
368 | obj_coff_section (ignore); | |
369 | #endif | |
252b5132 RH |
370 | } |
371 | ||
16b93d88 NC |
372 | static void |
373 | mcore_s_bss (needs_align) | |
374 | int needs_align; | |
375 | { | |
376 | dump_literals (0); | |
a75214e5 | 377 | |
16b93d88 NC |
378 | s_lcomm_bytes (needs_align); |
379 | } | |
380 | ||
381 | #ifdef OBJ_ELF | |
382 | static void | |
383 | mcore_s_comm (needs_align) | |
384 | int needs_align; | |
385 | { | |
386 | dump_literals (0); | |
a75214e5 | 387 | |
16b93d88 NC |
388 | obj_elf_common (needs_align); |
389 | } | |
390 | #endif | |
391 | ||
252b5132 | 392 | /* This function is called once, at assembler startup time. This should |
bcef92fa | 393 | set up all the tables, etc that the MD part of the assembler needs. */ |
252b5132 RH |
394 | void |
395 | md_begin () | |
396 | { | |
5ff37431 | 397 | const mcore_opcode_info * opcode; |
252b5132 RH |
398 | char * prev_name = ""; |
399 | ||
400 | opcode_hash_control = hash_new (); | |
401 | ||
402 | /* Insert unique names into hash table */ | |
403 | for (opcode = mcore_table; opcode->name; opcode ++) | |
404 | { | |
5ff37431 | 405 | if (! streq (prev_name, opcode->name)) |
252b5132 RH |
406 | { |
407 | prev_name = opcode->name; | |
408 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); | |
409 | } | |
410 | } | |
411 | } | |
412 | ||
413 | static int reg_m; | |
414 | static int reg_n; | |
415 | static expressionS immediate; /* absolute expression */ | |
416 | ||
417 | /* Get a log2(val). */ | |
418 | static int | |
419 | log2 (val) | |
420 | unsigned int val; | |
421 | { | |
422 | int log = -1; | |
423 | while (val != 0) | |
424 | { | |
5f8075fa AM |
425 | log ++; |
426 | val >>= 1; | |
252b5132 | 427 | } |
a75214e5 | 428 | |
252b5132 RH |
429 | return log; |
430 | } | |
431 | ||
432 | /* Try to parse a reg name. */ | |
433 | static char * | |
434 | parse_reg (s, reg) | |
435 | char * s; | |
436 | unsigned * reg; | |
437 | { | |
438 | /* Strip leading whitespace. */ | |
3882b010 | 439 | while (ISSPACE (* s)) |
252b5132 | 440 | ++ s; |
a75214e5 | 441 | |
3882b010 | 442 | if (TOLOWER (s[0]) == 'r') |
252b5132 RH |
443 | { |
444 | if (s[1] == '1' && s[2] >= '0' && s[2] <= '5') | |
445 | { | |
446 | *reg = 10 + s[2] - '0'; | |
447 | return s + 3; | |
448 | } | |
a75214e5 | 449 | |
252b5132 RH |
450 | if (s[1] >= '0' && s[1] <= '9') |
451 | { | |
452 | *reg = s[1] - '0'; | |
453 | return s + 2; | |
454 | } | |
455 | } | |
3882b010 L |
456 | else if ( TOLOWER (s[0]) == 's' |
457 | && TOLOWER (s[1]) == 'p' | |
458 | && ! ISALNUM (s[2])) | |
252b5132 RH |
459 | { |
460 | * reg = 0; | |
461 | return s + 2; | |
462 | } | |
a75214e5 | 463 | |
252b5132 RH |
464 | as_bad (_("register expected, but saw '%.6s'"), s); |
465 | return s; | |
466 | } | |
467 | ||
468 | static struct Cregs | |
469 | { | |
470 | char * name; | |
471 | unsigned int crnum; | |
472 | } | |
473 | cregs[] = | |
474 | { | |
475 | { "psr", 0}, | |
476 | { "vbr", 1}, | |
477 | { "epsr", 2}, | |
478 | { "fpsr", 3}, | |
479 | { "epc", 4}, | |
480 | { "fpc", 5}, | |
481 | { "ss0", 6}, | |
482 | { "ss1", 7}, | |
483 | { "ss2", 8}, | |
484 | { "ss3", 9}, | |
485 | { "ss4", 10}, | |
486 | { "gcr", 11}, | |
487 | { "gsr", 12}, | |
488 | { "", 0} | |
489 | }; | |
490 | ||
491 | static char * | |
492 | parse_creg (s, reg) | |
493 | char * s; | |
494 | unsigned * reg; | |
495 | { | |
496 | int i; | |
497 | ||
498 | /* Strip leading whitespace. */ | |
3882b010 | 499 | while (ISSPACE (* s)) |
252b5132 | 500 | ++s; |
a75214e5 | 501 | |
3882b010 | 502 | if ((TOLOWER (s[0]) == 'c' && TOLOWER (s[1]) == 'r')) |
252b5132 RH |
503 | { |
504 | if (s[2] == '3' && s[3] >= '0' && s[3] <= '1') | |
505 | { | |
506 | *reg = 30 + s[3] - '0'; | |
507 | return s + 4; | |
508 | } | |
a75214e5 | 509 | |
252b5132 RH |
510 | if (s[2] == '2' && s[3] >= '0' && s[3] <= '9') |
511 | { | |
512 | *reg = 20 + s[3] - '0'; | |
513 | return s + 4; | |
514 | } | |
a75214e5 | 515 | |
252b5132 RH |
516 | if (s[2] == '1' && s[3] >= '0' && s[3] <= '9') |
517 | { | |
518 | *reg = 10 + s[3] - '0'; | |
519 | return s + 4; | |
520 | } | |
a75214e5 | 521 | |
252b5132 RH |
522 | if (s[2] >= '0' && s[2] <= '9') |
523 | { | |
524 | *reg = s[2] - '0'; | |
525 | return s + 3; | |
526 | } | |
527 | } | |
a75214e5 | 528 | |
252b5132 RH |
529 | /* Look at alternate creg names before giving error. */ |
530 | for (i = 0; cregs[i].name[0] != '\0'; i++) | |
531 | { | |
532 | char buf [10]; | |
533 | int length; | |
534 | int j; | |
a75214e5 | 535 | |
252b5132 | 536 | length = strlen (cregs[i].name); |
a75214e5 | 537 | |
252b5132 | 538 | for (j = 0; j < length; j++) |
3882b010 | 539 | buf[j] = TOLOWER (s[j]); |
a75214e5 | 540 | |
252b5132 RH |
541 | if (strncmp (cregs[i].name, buf, length) == 0) |
542 | { | |
543 | *reg = cregs[i].crnum; | |
544 | return s + length; | |
545 | } | |
546 | } | |
a75214e5 | 547 | |
252b5132 | 548 | as_bad (_("control register expected, but saw '%.6s'"), s); |
a75214e5 | 549 | |
252b5132 RH |
550 | return s; |
551 | } | |
552 | ||
bec50466 NC |
553 | static char * |
554 | parse_psrmod (s, reg) | |
555 | char * s; | |
556 | unsigned * reg; | |
557 | { | |
558 | int i; | |
559 | char buf[10]; | |
560 | static struct psrmods | |
561 | { | |
562 | char * name; | |
563 | unsigned int value; | |
564 | } | |
565 | psrmods[] = | |
566 | { | |
567 | { "ie", 1 }, | |
568 | { "fe", 2 }, | |
569 | { "ee", 4 }, | |
570 | { "af", 8 } /* Really 0 and non-combinable. */ | |
571 | }; | |
a75214e5 | 572 | |
bec50466 | 573 | for (i = 0; i < 2; i++) |
3882b010 | 574 | buf[i] = TOLOWER (s[i]); |
a75214e5 | 575 | |
bec50466 NC |
576 | for (i = sizeof (psrmods) / sizeof (psrmods[0]); i--;) |
577 | { | |
578 | if (! strncmp (psrmods[i].name, buf, 2)) | |
579 | { | |
5f8075fa | 580 | * reg = psrmods[i].value; |
a75214e5 | 581 | |
5f8075fa | 582 | return s + 2; |
bec50466 NC |
583 | } |
584 | } | |
a75214e5 | 585 | |
bec50466 | 586 | as_bad (_("bad/missing psr specifier")); |
a75214e5 | 587 | |
bec50466 | 588 | * reg = 0; |
a75214e5 | 589 | |
bec50466 NC |
590 | return s; |
591 | } | |
592 | ||
252b5132 RH |
593 | static char * |
594 | parse_exp (s, e) | |
595 | char * s; | |
596 | expressionS * e; | |
597 | { | |
598 | char * save; | |
599 | char * new; | |
600 | ||
601 | /* Skip whitespace. */ | |
3882b010 | 602 | while (ISSPACE (* s)) |
252b5132 | 603 | ++ s; |
a75214e5 | 604 | |
252b5132 RH |
605 | save = input_line_pointer; |
606 | input_line_pointer = s; | |
607 | ||
608 | expression (e); | |
a75214e5 | 609 | |
252b5132 RH |
610 | if (e->X_op == O_absent) |
611 | as_bad (_("missing operand")); | |
a75214e5 | 612 | |
252b5132 RH |
613 | new = input_line_pointer; |
614 | input_line_pointer = save; | |
a75214e5 | 615 | |
252b5132 RH |
616 | return new; |
617 | } | |
618 | ||
619 | static void | |
620 | make_name (s, p, n) | |
621 | char * s; | |
622 | char * p; | |
623 | int n; | |
624 | { | |
625 | static const char hex[] = "0123456789ABCDEF"; | |
626 | ||
627 | s[0] = p[0]; | |
628 | s[1] = p[1]; | |
629 | s[2] = p[2]; | |
630 | s[3] = hex[(n >> 12) & 0xF]; | |
631 | s[4] = hex[(n >> 8) & 0xF]; | |
632 | s[5] = hex[(n >> 4) & 0xF]; | |
633 | s[6] = hex[(n) & 0xF]; | |
634 | s[7] = 0; | |
635 | } | |
636 | ||
b8a40f53 NC |
637 | #define POOL_END_LABEL ".LE" |
638 | #define POOL_START_LABEL ".LS" | |
639 | ||
252b5132 RH |
640 | static void |
641 | dump_literals (isforce) | |
642 | int isforce; | |
643 | { | |
644 | int i; | |
645 | struct literal * p; | |
49309057 | 646 | symbolS * brarsym; |
a75214e5 | 647 | |
252b5132 RH |
648 | if (poolsize == 0) |
649 | return; | |
650 | ||
651 | /* Must we branch around the literal table? */ | |
652 | if (isforce) | |
653 | { | |
654 | char * output; | |
655 | char brarname[8]; | |
a75214e5 | 656 | |
b8a40f53 | 657 | make_name (brarname, POOL_END_LABEL, poolnumber); |
a75214e5 | 658 | |
252b5132 | 659 | brarsym = symbol_make (brarname); |
a75214e5 | 660 | |
252b5132 | 661 | symbol_table_insert (brarsym); |
a75214e5 | 662 | |
252b5132 | 663 | output = frag_var (rs_machine_dependent, |
93c2a809 AM |
664 | md_relax_table[C (UNCD_JUMP, DISP32)].rlx_length, |
665 | md_relax_table[C (UNCD_JUMP, DISP12)].rlx_length, | |
252b5132 RH |
666 | C (UNCD_JUMP, 0), brarsym, 0, 0); |
667 | output[0] = INST_BYTE0 (MCORE_INST_BR); /* br .+xxx */ | |
668 | output[1] = INST_BYTE1 (MCORE_INST_BR); | |
669 | } | |
a75214e5 | 670 | |
252b5132 RH |
671 | /* Make sure that the section is sufficiently aligned and that |
672 | the literal table is aligned within it. */ | |
673 | record_alignment (now_seg, 2); | |
674 | frag_align (2, 0, 0); | |
a75214e5 | 675 | |
252b5132 | 676 | colon (S_GET_NAME (poolsym)); |
a75214e5 | 677 | |
252b5132 RH |
678 | for (i = 0, p = litpool; i < poolsize; i++, p++) |
679 | emit_expr (& p->e, 4); | |
a75214e5 | 680 | |
252b5132 RH |
681 | if (isforce) |
682 | colon (S_GET_NAME (brarsym)); | |
a75214e5 | 683 | |
252b5132 RH |
684 | poolsize = 0; |
685 | } | |
686 | ||
687 | static void | |
688 | check_literals (kind, offset) | |
689 | int kind; | |
690 | int offset; | |
691 | { | |
692 | poolspan += offset; | |
a75214e5 | 693 | |
252b5132 RH |
694 | /* SPANCLOSE and SPANEXIT are smaller numbers than SPANPANIC. |
695 | SPANPANIC means that we must dump now. | |
696 | kind == 0 is any old instruction. | |
697 | kind > 0 means we just had a control transfer instruction. | |
698 | kind == 1 means within a function | |
699 | kind == 2 means we just left a function | |
a75214e5 | 700 | |
252b5132 RH |
701 | The dump_literals (1) call inserts a branch around the table, so |
702 | we first look to see if its a situation where we won't have to | |
703 | insert a branch (e.g., the previous instruction was an unconditional | |
704 | branch). | |
a75214e5 | 705 | |
252b5132 RH |
706 | SPANPANIC is the point where we must dump a single-entry pool. |
707 | it accounts for alignments and an inserted branch. | |
708 | the 'poolsize*2' accounts for the scenario where we do: | |
709 | lrw r1,lit1; lrw r2,lit2; lrw r3,lit3 | |
710 | Note that the 'lit2' reference is 2 bytes further along | |
711 | but the literal it references will be 4 bytes further along, | |
712 | so we must consider the poolsize into this equation. | |
713 | This is slightly over-cautious, but guarantees that we won't | |
714 | panic because a relocation is too distant. */ | |
a75214e5 | 715 | |
252b5132 RH |
716 | if (poolspan > SPANCLOSE && kind > 0) |
717 | dump_literals (0); | |
4c1102fd | 718 | else if (poolspan > SPANEXIT && kind > 1) |
252b5132 RH |
719 | dump_literals (0); |
720 | else if (poolspan >= (SPANPANIC - poolsize * 2)) | |
721 | dump_literals (1); | |
722 | } | |
723 | ||
724 | static int | |
725 | enter_literal (e, ispcrel) | |
726 | expressionS * e; | |
727 | int ispcrel; | |
728 | { | |
729 | int i; | |
730 | struct literal * p; | |
731 | ||
732 | if (poolsize >= MAX_POOL_SIZE - 2) | |
733 | { | |
734 | /* The literal pool is as full as we can handle. We have | |
5f8075fa AM |
735 | to be 2 entries shy of the 1024/4=256 entries because we |
736 | have to allow for the branch (2 bytes) and the alignment | |
737 | (2 bytes before the first insn referencing the pool and | |
738 | 2 bytes before the pool itself) == 6 bytes, rounds up | |
739 | to 2 entries. */ | |
252b5132 RH |
740 | dump_literals (1); |
741 | } | |
742 | ||
743 | if (poolsize == 0) | |
744 | { | |
745 | /* Create new literal pool. */ | |
746 | if (++ poolnumber > 0xFFFF) | |
747 | as_fatal (_("more than 65K literal pools")); | |
a75214e5 | 748 | |
b8a40f53 | 749 | make_name (poolname, POOL_START_LABEL, poolnumber); |
252b5132 RH |
750 | poolsym = symbol_make (poolname); |
751 | symbol_table_insert (poolsym); | |
752 | poolspan = 0; | |
753 | } | |
a75214e5 | 754 | |
252b5132 RH |
755 | /* Search pool for value so we don't have duplicates. */ |
756 | for (p = litpool, i = 0; i < poolsize; i++, p++) | |
757 | { | |
758 | if (e->X_op == p->e.X_op | |
759 | && e->X_add_symbol == p->e.X_add_symbol | |
760 | && e->X_add_number == p->e.X_add_number | |
761 | && ispcrel == p->ispcrel) | |
762 | { | |
763 | p->refcnt ++; | |
764 | return i; | |
765 | } | |
766 | } | |
767 | ||
768 | p->refcnt = 1; | |
769 | p->ispcrel = ispcrel; | |
770 | p->e = * e; | |
a75214e5 | 771 | |
252b5132 RH |
772 | poolsize ++; |
773 | ||
a75214e5 | 774 | return i; |
252b5132 RH |
775 | } |
776 | ||
777 | /* Parse a literal specification. -- either new or old syntax. | |
778 | old syntax: the user supplies the label and places the literal. | |
779 | new syntax: we put it into the literal pool. */ | |
780 | static char * | |
781 | parse_rt (s, outputp, ispcrel, ep) | |
782 | char * s; | |
783 | char ** outputp; | |
784 | int ispcrel; | |
785 | expressionS * ep; | |
786 | { | |
787 | expressionS e; | |
788 | int n; | |
a75214e5 | 789 | |
252b5132 RH |
790 | if (ep) |
791 | /* Indicate nothing there. */ | |
792 | ep->X_op = O_absent; | |
a75214e5 | 793 | |
252b5132 RH |
794 | if (*s == '[') |
795 | { | |
796 | s = parse_exp (s + 1, & e); | |
a75214e5 | 797 | |
252b5132 RH |
798 | if (*s == ']') |
799 | s++; | |
800 | else | |
801 | as_bad (_("missing ']'")); | |
802 | } | |
803 | else | |
804 | { | |
805 | s = parse_exp (s, & e); | |
a75214e5 | 806 | |
252b5132 | 807 | n = enter_literal (& e, ispcrel); |
a75214e5 | 808 | |
252b5132 RH |
809 | if (ep) |
810 | *ep = e; | |
811 | ||
812 | /* Create a reference to pool entry. */ | |
813 | e.X_op = O_symbol; | |
814 | e.X_add_symbol = poolsym; | |
815 | e.X_add_number = n << 2; | |
816 | } | |
a75214e5 | 817 | |
252b5132 RH |
818 | * outputp = frag_more (2); |
819 | ||
820 | fix_new_exp (frag_now, (*outputp) - frag_now->fr_literal, 2, & e, 1, | |
821 | BFD_RELOC_MCORE_PCREL_IMM8BY4); | |
822 | ||
823 | return s; | |
824 | } | |
825 | ||
826 | static char * | |
827 | parse_imm (s, val, min, max) | |
828 | char * s; | |
829 | unsigned * val; | |
830 | unsigned min; | |
831 | unsigned max; | |
832 | { | |
833 | char * new; | |
834 | expressionS e; | |
a75214e5 | 835 | |
252b5132 | 836 | new = parse_exp (s, & e); |
a75214e5 | 837 | |
252b5132 RH |
838 | if (e.X_op == O_absent) |
839 | ; /* An error message has already been emitted. */ | |
840 | else if (e.X_op != O_constant) | |
841 | as_bad (_("operand must be a constant")); | |
842 | else if (e.X_add_number < min || e.X_add_number > max) | |
843 | as_bad (_("operand must be absolute in range %d..%d, not %d"), | |
844 | min, max, e.X_add_number); | |
845 | ||
846 | * val = e.X_add_number; | |
a75214e5 | 847 | |
252b5132 RH |
848 | return new; |
849 | } | |
850 | ||
851 | static char * | |
852 | parse_mem (s, reg, off, siz) | |
853 | char * s; | |
854 | unsigned * reg; | |
855 | unsigned * off; | |
856 | unsigned siz; | |
857 | { | |
858 | char * new; | |
859 | ||
860 | * off = 0; | |
a75214e5 | 861 | |
3882b010 | 862 | while (ISSPACE (* s)) |
252b5132 | 863 | ++ s; |
a75214e5 | 864 | |
252b5132 RH |
865 | if (* s == '(') |
866 | { | |
867 | s = parse_reg (s + 1, reg); | |
868 | ||
3882b010 | 869 | while (ISSPACE (* s)) |
252b5132 | 870 | ++ s; |
a75214e5 | 871 | |
252b5132 RH |
872 | if (* s == ',') |
873 | { | |
874 | s = parse_imm (s + 1, off, 0, 63); | |
a75214e5 | 875 | |
252b5132 RH |
876 | if (siz > 1) |
877 | { | |
878 | if (siz > 2) | |
879 | { | |
880 | if (* off & 0x3) | |
881 | as_bad (_("operand must be a multiple of 4")); | |
a75214e5 | 882 | |
252b5132 RH |
883 | * off >>= 2; |
884 | } | |
885 | else | |
886 | { | |
887 | if (* off & 0x1) | |
888 | as_bad (_("operand must be a multiple of 2")); | |
a75214e5 | 889 | |
252b5132 RH |
890 | * off >>= 1; |
891 | } | |
892 | } | |
893 | } | |
a75214e5 | 894 | |
3882b010 | 895 | while (ISSPACE (* s)) |
252b5132 | 896 | ++ s; |
a75214e5 | 897 | |
252b5132 RH |
898 | if (* s == ')') |
899 | s ++; | |
900 | } | |
901 | else | |
902 | as_bad (_("base register expected")); | |
a75214e5 | 903 | |
252b5132 RH |
904 | return s; |
905 | } | |
906 | ||
907 | /* This is the guts of the machine-dependent assembler. STR points to a | |
908 | machine dependent instruction. This function is supposed to emit | |
909 | the frags/bytes it assembles to. */ | |
910 | ||
911 | void | |
912 | md_assemble (str) | |
913 | char * str; | |
914 | { | |
915 | char * op_start; | |
916 | char * op_end; | |
917 | mcore_opcode_info * opcode; | |
918 | char * output; | |
919 | int nlen = 0; | |
920 | unsigned short inst; | |
921 | unsigned reg; | |
922 | unsigned off; | |
923 | unsigned isize; | |
924 | expressionS e; | |
925 | char name[20]; | |
926 | ||
927 | /* Drop leading whitespace. */ | |
3882b010 | 928 | while (ISSPACE (* str)) |
252b5132 RH |
929 | str ++; |
930 | ||
931 | /* Find the op code end. */ | |
932 | for (op_start = op_end = str; | |
b75c0c92 | 933 | nlen < 20 && !is_end_of_line [(unsigned char) *op_end] && *op_end != ' '; |
252b5132 RH |
934 | op_end++) |
935 | { | |
936 | name[nlen] = op_start[nlen]; | |
937 | nlen++; | |
938 | } | |
a75214e5 | 939 | |
252b5132 | 940 | name [nlen] = 0; |
a75214e5 | 941 | |
252b5132 RH |
942 | if (nlen == 0) |
943 | { | |
944 | as_bad (_("can't find opcode ")); | |
945 | return; | |
946 | } | |
947 | ||
948 | opcode = (mcore_opcode_info *) hash_find (opcode_hash_control, name); | |
949 | if (opcode == NULL) | |
950 | { | |
951 | as_bad (_("unknown opcode \"%s\""), name); | |
952 | return; | |
953 | } | |
a75214e5 | 954 | |
252b5132 RH |
955 | inst = opcode->inst; |
956 | isize = 2; | |
a75214e5 | 957 | |
252b5132 RH |
958 | switch (opcode->opclass) |
959 | { | |
960 | case O0: | |
961 | output = frag_more (2); | |
962 | break; | |
a75214e5 | 963 | |
252b5132 RH |
964 | case OT: |
965 | op_end = parse_imm (op_end + 1, & reg, 0, 3); | |
966 | inst |= reg; | |
967 | output = frag_more (2); | |
968 | break; | |
a75214e5 | 969 | |
252b5132 RH |
970 | case O1: |
971 | op_end = parse_reg (op_end + 1, & reg); | |
972 | inst |= reg; | |
973 | output = frag_more (2); | |
974 | break; | |
a75214e5 | 975 | |
252b5132 RH |
976 | case JMP: |
977 | op_end = parse_reg (op_end + 1, & reg); | |
978 | inst |= reg; | |
979 | output = frag_more (2); | |
980 | /* In a sifilter mode, we emit this insn 2 times, | |
5f8075fa | 981 | fixes problem of an interrupt during a jmp.. */ |
252b5132 RH |
982 | if (sifilter_mode) |
983 | { | |
b8a40f53 NC |
984 | output[0] = INST_BYTE0 (inst); |
985 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
986 | output = frag_more (2); |
987 | } | |
988 | break; | |
a75214e5 | 989 | |
252b5132 RH |
990 | case JSR: |
991 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 992 | |
252b5132 RH |
993 | if (reg == 15) |
994 | as_bad (_("invalid register: r15 illegal")); | |
a75214e5 | 995 | |
252b5132 RH |
996 | inst |= reg; |
997 | output = frag_more (2); | |
a75214e5 | 998 | |
252b5132 RH |
999 | if (sifilter_mode) |
1000 | { | |
1001 | /* Replace with: bsr .+2 ; addi r15,6; jmp rx ; jmp rx */ | |
1002 | inst = MCORE_INST_BSR; /* with 0 displacement */ | |
b8a40f53 NC |
1003 | output[0] = INST_BYTE0 (inst); |
1004 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
1005 | |
1006 | output = frag_more (2); | |
1007 | inst = MCORE_INST_ADDI; | |
1008 | inst |= 15; /* addi r15,6 */ | |
1009 | inst |= (6 - 1) << 4; /* over the jmp's */ | |
b8a40f53 NC |
1010 | output[0] = INST_BYTE0 (inst); |
1011 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
1012 | |
1013 | output = frag_more (2); | |
1014 | inst = MCORE_INST_JMP | reg; | |
b8a40f53 NC |
1015 | output[0] = INST_BYTE0 (inst); |
1016 | output[1] = INST_BYTE1 (inst); | |
252b5132 RH |
1017 | |
1018 | output = frag_more (2); /* 2nd emitted in fallthru */ | |
1019 | } | |
1020 | break; | |
a75214e5 | 1021 | |
252b5132 RH |
1022 | case OC: |
1023 | op_end = parse_reg (op_end + 1, & reg); | |
1024 | inst |= reg; | |
a75214e5 | 1025 | |
252b5132 | 1026 | /* Skip whitespace. */ |
3882b010 | 1027 | while (ISSPACE (* op_end)) |
252b5132 | 1028 | ++ op_end; |
a75214e5 | 1029 | |
252b5132 RH |
1030 | if (*op_end == ',') |
1031 | { | |
1032 | op_end = parse_creg (op_end + 1, & reg); | |
1033 | inst |= reg << 4; | |
1034 | } | |
a75214e5 | 1035 | |
252b5132 RH |
1036 | output = frag_more (2); |
1037 | break; | |
1038 | ||
bec50466 NC |
1039 | case MULSH: |
1040 | if (cpu == M210) | |
1041 | { | |
1042 | as_bad (_("M340 specific opcode used when assembling for M210")); | |
1043 | break; | |
1044 | } | |
a75214e5 | 1045 | /* drop through... */ |
252b5132 RH |
1046 | case O2: |
1047 | op_end = parse_reg (op_end + 1, & reg); | |
1048 | inst |= reg; | |
a75214e5 | 1049 | |
252b5132 | 1050 | /* Skip whitespace. */ |
3882b010 | 1051 | while (ISSPACE (* op_end)) |
252b5132 | 1052 | ++ op_end; |
a75214e5 | 1053 | |
252b5132 RH |
1054 | if (* op_end == ',') |
1055 | { | |
1056 | op_end = parse_reg (op_end + 1, & reg); | |
1057 | inst |= reg << 4; | |
1058 | } | |
1059 | else | |
1060 | as_bad (_("second operand missing")); | |
a75214e5 | 1061 | |
252b5132 RH |
1062 | output = frag_more (2); |
1063 | break; | |
a75214e5 | 1064 | |
252b5132 RH |
1065 | case X1: /* Handle both syntax-> xtrb- r1,rx OR xtrb- rx */ |
1066 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1067 | |
252b5132 | 1068 | /* Skip whitespace. */ |
3882b010 | 1069 | while (ISSPACE (* op_end)) |
252b5132 | 1070 | ++ op_end; |
a75214e5 | 1071 | |
252b5132 RH |
1072 | if (* op_end == ',') /* xtrb- r1,rx */ |
1073 | { | |
1074 | if (reg != 1) | |
1075 | as_bad (_("destination register must be r1")); | |
a75214e5 | 1076 | |
252b5132 RH |
1077 | op_end = parse_reg (op_end + 1, & reg); |
1078 | } | |
a75214e5 | 1079 | |
252b5132 RH |
1080 | inst |= reg; |
1081 | output = frag_more (2); | |
1082 | break; | |
a75214e5 | 1083 | |
252b5132 RH |
1084 | case O1R1: /* div- rx,r1 */ |
1085 | op_end = parse_reg (op_end + 1, & reg); | |
1086 | inst |= reg; | |
a75214e5 | 1087 | |
252b5132 | 1088 | /* Skip whitespace. */ |
3882b010 | 1089 | while (ISSPACE (* op_end)) |
252b5132 | 1090 | ++ op_end; |
a75214e5 | 1091 | |
252b5132 RH |
1092 | if (* op_end == ',') |
1093 | { | |
1094 | op_end = parse_reg (op_end + 1, & reg); | |
1095 | if (reg != 1) | |
1096 | as_bad (_("source register must be r1")); | |
1097 | } | |
1098 | else | |
1099 | as_bad (_("second operand missing")); | |
a75214e5 | 1100 | |
252b5132 RH |
1101 | output = frag_more (2); |
1102 | break; | |
a75214e5 | 1103 | |
252b5132 RH |
1104 | case OI: |
1105 | op_end = parse_reg (op_end + 1, & reg); | |
1106 | inst |= reg; | |
a75214e5 | 1107 | |
252b5132 | 1108 | /* Skip whitespace. */ |
3882b010 | 1109 | while (ISSPACE (* op_end)) |
252b5132 | 1110 | ++ op_end; |
a75214e5 | 1111 | |
252b5132 RH |
1112 | if (* op_end == ',') |
1113 | { | |
1114 | op_end = parse_imm (op_end + 1, & reg, 1, 32); | |
1115 | inst |= (reg - 1) << 4; | |
1116 | } | |
1117 | else | |
1118 | as_bad (_("second operand missing")); | |
a75214e5 | 1119 | |
252b5132 RH |
1120 | output = frag_more (2); |
1121 | break; | |
a75214e5 | 1122 | |
252b5132 RH |
1123 | case OB: |
1124 | op_end = parse_reg (op_end + 1, & reg); | |
1125 | inst |= reg; | |
a75214e5 | 1126 | |
252b5132 | 1127 | /* Skip whitespace. */ |
3882b010 | 1128 | while (ISSPACE (* op_end)) |
252b5132 | 1129 | ++ op_end; |
a75214e5 | 1130 | |
252b5132 RH |
1131 | if (* op_end == ',') |
1132 | { | |
1133 | op_end = parse_imm (op_end + 1, & reg, 0, 31); | |
1134 | inst |= reg << 4; | |
1135 | } | |
1136 | else | |
1137 | as_bad (_("second operand missing")); | |
a75214e5 | 1138 | |
252b5132 RH |
1139 | output = frag_more (2); |
1140 | break; | |
a75214e5 | 1141 | |
252b5132 RH |
1142 | case OB2: /* like OB, but arg is 2^n instead of n */ |
1143 | op_end = parse_reg (op_end + 1, & reg); | |
1144 | inst |= reg; | |
a75214e5 | 1145 | |
252b5132 | 1146 | /* Skip whitespace. */ |
3882b010 | 1147 | while (ISSPACE (* op_end)) |
252b5132 | 1148 | ++ op_end; |
a75214e5 | 1149 | |
252b5132 RH |
1150 | if (* op_end == ',') |
1151 | { | |
1152 | op_end = parse_imm (op_end + 1, & reg, 1, 1 << 31); | |
a75214e5 | 1153 | /* Further restrict the immediate to a power of two. */ |
252b5132 RH |
1154 | if ((reg & (reg - 1)) == 0) |
1155 | reg = log2 (reg); | |
1156 | else | |
1157 | { | |
1158 | reg = 0; | |
1159 | as_bad (_("immediate is not a power of two")); | |
1160 | } | |
1161 | inst |= (reg) << 4; | |
1162 | } | |
1163 | else | |
1164 | as_bad (_("second operand missing")); | |
a75214e5 | 1165 | |
252b5132 RH |
1166 | output = frag_more (2); |
1167 | break; | |
a75214e5 KH |
1168 | |
1169 | case OBRa: /* Specific for bgeni: imm of 0->6 translate to movi. */ | |
252b5132 RH |
1170 | case OBRb: |
1171 | case OBRc: | |
1172 | op_end = parse_reg (op_end + 1, & reg); | |
1173 | inst |= reg; | |
a75214e5 | 1174 | |
252b5132 | 1175 | /* Skip whitespace. */ |
3882b010 | 1176 | while (ISSPACE (* op_end)) |
252b5132 | 1177 | ++ op_end; |
a75214e5 | 1178 | |
252b5132 RH |
1179 | if (* op_end == ',') |
1180 | { | |
1181 | op_end = parse_imm (op_end + 1, & reg, 0, 31); | |
1182 | /* immediate values of 0 -> 6 translate to movi */ | |
1183 | if (reg <= 6) | |
1184 | { | |
1185 | inst = (inst & 0xF) | MCORE_INST_BGENI_ALT; | |
1186 | reg = 0x1 << reg; | |
1187 | as_warn (_("translating bgeni to movi")); | |
1188 | } | |
1189 | inst &= ~ 0x01f0; | |
1190 | inst |= reg << 4; | |
1191 | } | |
1192 | else | |
1193 | as_bad (_("second operand missing")); | |
a75214e5 | 1194 | |
252b5132 RH |
1195 | output = frag_more (2); |
1196 | break; | |
a75214e5 | 1197 | |
252b5132 RH |
1198 | case OBR2: /* like OBR, but arg is 2^n instead of n */ |
1199 | op_end = parse_reg (op_end + 1, & reg); | |
1200 | inst |= reg; | |
a75214e5 | 1201 | |
252b5132 | 1202 | /* Skip whitespace. */ |
3882b010 | 1203 | while (ISSPACE (* op_end)) |
252b5132 | 1204 | ++ op_end; |
a75214e5 | 1205 | |
252b5132 RH |
1206 | if (* op_end == ',') |
1207 | { | |
1208 | op_end = parse_imm (op_end + 1, & reg, 1, 1 << 31); | |
a75214e5 | 1209 | |
252b5132 RH |
1210 | /* Further restrict the immediate to a power of two. */ |
1211 | if ((reg & (reg - 1)) == 0) | |
1212 | reg = log2 (reg); | |
1213 | else | |
1214 | { | |
1215 | reg = 0; | |
1216 | as_bad (_("immediate is not a power of two")); | |
1217 | } | |
a75214e5 KH |
1218 | |
1219 | /* Immediate values of 0 -> 6 translate to movi. */ | |
252b5132 RH |
1220 | if (reg <= 6) |
1221 | { | |
1222 | inst = (inst & 0xF) | MCORE_INST_BGENI_ALT; | |
1223 | reg = 0x1 << reg; | |
1224 | as_warn (_("translating mgeni to movi")); | |
1225 | } | |
a75214e5 | 1226 | |
252b5132 RH |
1227 | inst |= reg << 4; |
1228 | } | |
1229 | else | |
1230 | as_bad (_("second operand missing")); | |
a75214e5 | 1231 | |
252b5132 RH |
1232 | output = frag_more (2); |
1233 | break; | |
a75214e5 | 1234 | |
252b5132 RH |
1235 | case OMa: /* Specific for bmaski: imm 1->7 translate to movi. */ |
1236 | case OMb: | |
1237 | case OMc: | |
1238 | op_end = parse_reg (op_end + 1, & reg); | |
1239 | inst |= reg; | |
a75214e5 | 1240 | |
252b5132 | 1241 | /* Skip whitespace. */ |
3882b010 | 1242 | while (ISSPACE (* op_end)) |
252b5132 | 1243 | ++ op_end; |
a75214e5 | 1244 | |
252b5132 RH |
1245 | if (* op_end == ',') |
1246 | { | |
1247 | op_end = parse_imm (op_end + 1, & reg, 1, 32); | |
a75214e5 KH |
1248 | |
1249 | /* Immediate values of 1 -> 7 translate to movi. */ | |
252b5132 RH |
1250 | if (reg <= 7) |
1251 | { | |
1252 | inst = (inst & 0xF) | MCORE_INST_BMASKI_ALT; | |
1253 | reg = (0x1 << reg) - 1; | |
1254 | inst |= reg << 4; | |
a75214e5 | 1255 | |
252b5132 RH |
1256 | as_warn (_("translating bmaski to movi")); |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | inst &= ~ 0x01F0; | |
1261 | inst |= (reg & 0x1F) << 4; | |
1262 | } | |
1263 | } | |
1264 | else | |
1265 | as_bad (_("second operand missing")); | |
a75214e5 | 1266 | |
252b5132 RH |
1267 | output = frag_more (2); |
1268 | break; | |
a75214e5 | 1269 | |
252b5132 RH |
1270 | case SI: |
1271 | op_end = parse_reg (op_end + 1, & reg); | |
1272 | inst |= reg; | |
a75214e5 | 1273 | |
252b5132 | 1274 | /* Skip whitespace. */ |
3882b010 | 1275 | while (ISSPACE (* op_end)) |
252b5132 | 1276 | ++ op_end; |
a75214e5 | 1277 | |
252b5132 RH |
1278 | if (* op_end == ',') |
1279 | { | |
1280 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
1281 | inst |= reg << 4; | |
1282 | } | |
1283 | else | |
1284 | as_bad (_("second operand missing")); | |
a75214e5 | 1285 | |
252b5132 RH |
1286 | output = frag_more (2); |
1287 | break; | |
1288 | ||
1289 | case I7: | |
1290 | op_end = parse_reg (op_end + 1, & reg); | |
1291 | inst |= reg; | |
a75214e5 | 1292 | |
252b5132 | 1293 | /* Skip whitespace. */ |
3882b010 | 1294 | while (ISSPACE (* op_end)) |
252b5132 | 1295 | ++ op_end; |
a75214e5 | 1296 | |
252b5132 RH |
1297 | if (* op_end == ',') |
1298 | { | |
1299 | op_end = parse_imm (op_end + 1, & reg, 0, 0x7F); | |
1300 | inst |= reg << 4; | |
1301 | } | |
1302 | else | |
1303 | as_bad (_("second operand missing")); | |
a75214e5 | 1304 | |
252b5132 RH |
1305 | output = frag_more (2); |
1306 | break; | |
a75214e5 | 1307 | |
252b5132 RH |
1308 | case LS: |
1309 | op_end = parse_reg (op_end + 1, & reg); | |
1310 | inst |= reg << 8; | |
a75214e5 | 1311 | |
252b5132 | 1312 | /* Skip whitespace. */ |
3882b010 | 1313 | while (ISSPACE (* op_end)) |
252b5132 | 1314 | ++ op_end; |
a75214e5 | 1315 | |
252b5132 RH |
1316 | if (* op_end == ',') |
1317 | { | |
1318 | int size; | |
a75214e5 | 1319 | |
252b5132 RH |
1320 | if ((inst & 0x6000) == 0) |
1321 | size = 4; | |
1322 | else if ((inst & 0x6000) == 0x4000) | |
1323 | size = 2; | |
1324 | else if ((inst & 0x6000) == 0x2000) | |
1325 | size = 1; | |
a75214e5 | 1326 | |
252b5132 | 1327 | op_end = parse_mem (op_end + 1, & reg, & off, size); |
a75214e5 | 1328 | |
252b5132 RH |
1329 | if (off > 16) |
1330 | as_bad (_("displacement too large (%d)"), off); | |
1331 | else | |
1332 | inst |= (reg) | (off << 4); | |
1333 | } | |
1334 | else | |
1335 | as_bad (_("second operand missing")); | |
a75214e5 | 1336 | |
252b5132 RH |
1337 | output = frag_more (2); |
1338 | break; | |
a75214e5 | 1339 | |
252b5132 RH |
1340 | case LR: |
1341 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1342 | |
252b5132 RH |
1343 | if (reg == 0 || reg == 15) |
1344 | as_bad (_("Invalid register: r0 and r15 illegal")); | |
a75214e5 | 1345 | |
252b5132 | 1346 | inst |= (reg << 8); |
a75214e5 | 1347 | |
252b5132 | 1348 | /* Skip whitespace. */ |
3882b010 | 1349 | while (ISSPACE (* op_end)) |
252b5132 | 1350 | ++ op_end; |
a75214e5 | 1351 | |
252b5132 | 1352 | if (* op_end == ',') |
2d473ce9 NC |
1353 | { |
1354 | /* parse_rt calls frag_more() for us. */ | |
1355 | input_line_pointer = parse_rt (op_end + 1, & output, 0, 0); | |
5f8075fa | 1356 | op_end = input_line_pointer; |
2d473ce9 | 1357 | } |
252b5132 RH |
1358 | else |
1359 | { | |
1360 | as_bad (_("second operand missing")); | |
1361 | output = frag_more (2); /* save its space */ | |
1362 | } | |
1363 | break; | |
a75214e5 | 1364 | |
252b5132 RH |
1365 | case LJ: |
1366 | input_line_pointer = parse_rt (op_end + 1, & output, 1, 0); | |
1367 | /* parse_rt() calls frag_more() for us. */ | |
2d473ce9 | 1368 | op_end = input_line_pointer; |
252b5132 | 1369 | break; |
a75214e5 | 1370 | |
252b5132 RH |
1371 | case RM: |
1372 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1373 | |
252b5132 RH |
1374 | if (reg == 0 || reg == 15) |
1375 | as_bad (_("bad starting register: r0 and r15 invalid")); | |
a75214e5 | 1376 | |
252b5132 | 1377 | inst |= reg; |
a75214e5 | 1378 | |
252b5132 | 1379 | /* Skip whitespace. */ |
3882b010 | 1380 | while (ISSPACE (* op_end)) |
252b5132 | 1381 | ++ op_end; |
a75214e5 | 1382 | |
252b5132 RH |
1383 | if (* op_end == '-') |
1384 | { | |
1385 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1386 | |
252b5132 RH |
1387 | if (reg != 15) |
1388 | as_bad (_("ending register must be r15")); | |
a75214e5 | 1389 | |
252b5132 | 1390 | /* Skip whitespace. */ |
3882b010 | 1391 | while (ISSPACE (* op_end)) |
252b5132 RH |
1392 | ++ op_end; |
1393 | } | |
a75214e5 | 1394 | |
252b5132 RH |
1395 | if (* op_end == ',') |
1396 | { | |
1397 | op_end ++; | |
a75214e5 | 1398 | |
252b5132 | 1399 | /* Skip whitespace. */ |
3882b010 | 1400 | while (ISSPACE (* op_end)) |
252b5132 | 1401 | ++ op_end; |
a75214e5 | 1402 | |
252b5132 RH |
1403 | if (* op_end == '(') |
1404 | { | |
1405 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1406 | |
252b5132 RH |
1407 | if (reg != 0) |
1408 | as_bad (_("bad base register: must be r0")); | |
a75214e5 | 1409 | |
252b5132 RH |
1410 | if (* op_end == ')') |
1411 | op_end ++; | |
1412 | } | |
1413 | else | |
1414 | as_bad (_("base register expected")); | |
1415 | } | |
1416 | else | |
1417 | as_bad (_("second operand missing")); | |
a75214e5 | 1418 | |
252b5132 RH |
1419 | output = frag_more (2); |
1420 | break; | |
a75214e5 | 1421 | |
252b5132 RH |
1422 | case RQ: |
1423 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1424 | |
252b5132 RH |
1425 | if (reg != 4) |
1426 | as_fatal (_("first register must be r4")); | |
a75214e5 | 1427 | |
252b5132 | 1428 | /* Skip whitespace. */ |
3882b010 | 1429 | while (ISSPACE (* op_end)) |
252b5132 | 1430 | ++ op_end; |
a75214e5 | 1431 | |
252b5132 RH |
1432 | if (* op_end == '-') |
1433 | { | |
1434 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1435 | |
252b5132 RH |
1436 | if (reg != 7) |
1437 | as_fatal (_("last register must be r7")); | |
a75214e5 | 1438 | |
252b5132 | 1439 | /* Skip whitespace. */ |
3882b010 | 1440 | while (ISSPACE (* op_end)) |
252b5132 | 1441 | ++ op_end; |
a75214e5 | 1442 | |
252b5132 RH |
1443 | if (* op_end == ',') |
1444 | { | |
1445 | op_end ++; | |
a75214e5 | 1446 | |
252b5132 | 1447 | /* Skip whitespace. */ |
3882b010 | 1448 | while (ISSPACE (* op_end)) |
252b5132 | 1449 | ++ op_end; |
a75214e5 | 1450 | |
252b5132 RH |
1451 | if (* op_end == '(') |
1452 | { | |
1453 | op_end = parse_reg (op_end + 1, & reg); | |
a75214e5 | 1454 | |
252b5132 RH |
1455 | if (reg >= 4 && reg <= 7) |
1456 | as_fatal ("base register cannot be r4, r5, r6, or r7"); | |
a75214e5 | 1457 | |
252b5132 | 1458 | inst |= reg; |
a75214e5 | 1459 | |
252b5132 | 1460 | /* Skip whitespace. */ |
3882b010 | 1461 | while (ISSPACE (* op_end)) |
252b5132 | 1462 | ++ op_end; |
a75214e5 | 1463 | |
252b5132 RH |
1464 | if (* op_end == ')') |
1465 | op_end ++; | |
1466 | } | |
1467 | else | |
1468 | as_bad (_("base register expected")); | |
1469 | } | |
1470 | else | |
1471 | as_bad (_("second operand missing")); | |
1472 | } | |
1473 | else | |
1474 | as_bad (_("reg-reg expected")); | |
a75214e5 | 1475 | |
252b5132 RH |
1476 | output = frag_more (2); |
1477 | break; | |
a75214e5 | 1478 | |
252b5132 RH |
1479 | case BR: |
1480 | input_line_pointer = parse_exp (op_end + 1, & e); | |
2d473ce9 | 1481 | op_end = input_line_pointer; |
a75214e5 | 1482 | |
252b5132 | 1483 | output = frag_more (2); |
a75214e5 KH |
1484 | |
1485 | fix_new_exp (frag_now, output-frag_now->fr_literal, | |
252b5132 RH |
1486 | 2, & e, 1, BFD_RELOC_MCORE_PCREL_IMM11BY2); |
1487 | break; | |
a75214e5 | 1488 | |
252b5132 RH |
1489 | case BL: |
1490 | op_end = parse_reg (op_end + 1, & reg); | |
1491 | inst |= reg << 4; | |
a75214e5 | 1492 | |
252b5132 | 1493 | /* Skip whitespace. */ |
3882b010 | 1494 | while (ISSPACE (* op_end)) |
252b5132 | 1495 | ++ op_end; |
a75214e5 | 1496 | |
252b5132 RH |
1497 | if (* op_end == ',') |
1498 | { | |
1499 | op_end = parse_exp (op_end + 1, & e); | |
1500 | output = frag_more (2); | |
a75214e5 KH |
1501 | |
1502 | fix_new_exp (frag_now, output-frag_now->fr_literal, | |
252b5132 RH |
1503 | 2, & e, 1, BFD_RELOC_MCORE_PCREL_IMM4BY2); |
1504 | } | |
1505 | else | |
1506 | { | |
1507 | as_bad (_("second operand missing")); | |
1508 | output = frag_more (2); | |
1509 | } | |
1510 | break; | |
a75214e5 | 1511 | |
252b5132 RH |
1512 | case JC: |
1513 | input_line_pointer = parse_exp (op_end + 1, & e); | |
2d473ce9 | 1514 | op_end = input_line_pointer; |
a75214e5 | 1515 | |
252b5132 | 1516 | output = frag_var (rs_machine_dependent, |
93c2a809 AM |
1517 | md_relax_table[C (COND_JUMP, DISP32)].rlx_length, |
1518 | md_relax_table[C (COND_JUMP, DISP12)].rlx_length, | |
252b5132 RH |
1519 | C (COND_JUMP, 0), e.X_add_symbol, e.X_add_number, 0); |
1520 | isize = C32_LEN; | |
1521 | break; | |
a75214e5 | 1522 | |
252b5132 RH |
1523 | case JU: |
1524 | input_line_pointer = parse_exp (op_end + 1, & e); | |
2d473ce9 NC |
1525 | op_end = input_line_pointer; |
1526 | ||
252b5132 | 1527 | output = frag_var (rs_machine_dependent, |
93c2a809 AM |
1528 | md_relax_table[C (UNCD_JUMP, DISP32)].rlx_length, |
1529 | md_relax_table[C (UNCD_JUMP, DISP12)].rlx_length, | |
252b5132 RH |
1530 | C (UNCD_JUMP, 0), e.X_add_symbol, e.X_add_number, 0); |
1531 | isize = U32_LEN; | |
1532 | break; | |
a75214e5 | 1533 | |
252b5132 RH |
1534 | case JL: |
1535 | inst = MCORE_INST_JSRI; /* jsri */ | |
1536 | input_line_pointer = parse_rt (op_end + 1, & output, 1, & e); | |
bcef92fa | 1537 | /* parse_rt() calls frag_more for us. */ |
2d473ce9 | 1538 | op_end = input_line_pointer; |
a75214e5 KH |
1539 | |
1540 | /* Only do this if we know how to do it ... */ | |
252b5132 RH |
1541 | if (e.X_op != O_absent && do_jsri2bsr) |
1542 | { | |
1543 | /* Look at adding the R_PCREL_JSRIMM11BY2. */ | |
a75214e5 | 1544 | fix_new_exp (frag_now, output-frag_now->fr_literal, |
252b5132 RH |
1545 | 2, & e, 1, BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2); |
1546 | } | |
1547 | break; | |
1548 | ||
1549 | case RSI: /* SI, but imm becomes 32-imm */ | |
1550 | op_end = parse_reg (op_end + 1, & reg); | |
1551 | inst |= reg; | |
a75214e5 | 1552 | |
252b5132 | 1553 | /* Skip whitespace. */ |
3882b010 | 1554 | while (ISSPACE (* op_end)) |
252b5132 | 1555 | ++ op_end; |
a75214e5 | 1556 | |
252b5132 RH |
1557 | if (* op_end == ',') |
1558 | { | |
1559 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
a75214e5 | 1560 | |
252b5132 RH |
1561 | reg = 32 - reg; |
1562 | inst |= reg << 4; | |
1563 | } | |
1564 | else | |
1565 | as_bad (_("second operand missing")); | |
a75214e5 | 1566 | |
252b5132 RH |
1567 | output = frag_more (2); |
1568 | break; | |
a75214e5 | 1569 | |
252b5132 RH |
1570 | case DO21: /* O2, dup rd, lit must be 1 */ |
1571 | op_end = parse_reg (op_end + 1, & reg); | |
1572 | inst |= reg; | |
1573 | inst |= reg << 4; | |
a75214e5 | 1574 | |
252b5132 | 1575 | /* Skip whitespace. */ |
3882b010 | 1576 | while (ISSPACE (* op_end)) |
252b5132 | 1577 | ++ op_end; |
a75214e5 | 1578 | |
252b5132 RH |
1579 | if (* op_end == ',') |
1580 | { | |
1581 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
a75214e5 | 1582 | |
252b5132 RH |
1583 | if (reg != 1) |
1584 | as_bad (_("second operand must be 1")); | |
1585 | } | |
1586 | else | |
1587 | as_bad (_("second operand missing")); | |
a75214e5 | 1588 | |
252b5132 RH |
1589 | output = frag_more (2); |
1590 | break; | |
a75214e5 | 1591 | |
252b5132 RH |
1592 | case SIa: |
1593 | op_end = parse_reg (op_end + 1, & reg); | |
1594 | inst |= reg; | |
a75214e5 | 1595 | |
252b5132 | 1596 | /* Skip whitespace. */ |
3882b010 | 1597 | while (ISSPACE (* op_end)) |
252b5132 | 1598 | ++ op_end; |
a75214e5 | 1599 | |
252b5132 RH |
1600 | if (* op_end == ',') |
1601 | { | |
1602 | op_end = parse_imm (op_end + 1, & reg, 1, 31); | |
1603 | ||
1604 | if (reg == 0) | |
1605 | as_bad (_("zero used as immediate value")); | |
a75214e5 | 1606 | |
252b5132 RH |
1607 | inst |= reg << 4; |
1608 | } | |
1609 | else | |
1610 | as_bad (_("second operand missing")); | |
a75214e5 | 1611 | |
252b5132 RH |
1612 | output = frag_more (2); |
1613 | break; | |
1614 | ||
bec50466 NC |
1615 | case OPSR: |
1616 | if (cpu == M210) | |
1617 | { | |
1618 | as_bad (_("M340 specific opcode used when assembling for M210")); | |
1619 | break; | |
1620 | } | |
a75214e5 | 1621 | |
bec50466 | 1622 | op_end = parse_psrmod (op_end + 1, & reg); |
a75214e5 | 1623 | |
bec50466 NC |
1624 | /* Look for further selectors. */ |
1625 | while (* op_end == ',') | |
1626 | { | |
1627 | unsigned value; | |
a75214e5 | 1628 | |
bec50466 | 1629 | op_end = parse_psrmod (op_end + 1, & value); |
a75214e5 | 1630 | |
bec50466 NC |
1631 | if (value & reg) |
1632 | as_bad (_("duplicated psr bit specifier")); | |
a75214e5 | 1633 | |
bec50466 NC |
1634 | reg |= value; |
1635 | } | |
a75214e5 | 1636 | |
bec50466 NC |
1637 | if (reg > 8) |
1638 | as_bad (_("`af' must appear alone")); | |
a75214e5 | 1639 | |
bec50466 NC |
1640 | inst |= (reg & 0x7); |
1641 | output = frag_more (2); | |
1642 | break; | |
a75214e5 | 1643 | |
252b5132 RH |
1644 | default: |
1645 | as_bad (_("unimplemented opcode \"%s\""), name); | |
1646 | } | |
2d473ce9 NC |
1647 | |
1648 | /* Drop whitespace after all the operands have been parsed. */ | |
3882b010 | 1649 | while (ISSPACE (* op_end)) |
2d473ce9 NC |
1650 | op_end ++; |
1651 | ||
a75214e5 | 1652 | /* Give warning message if the insn has more operands than required. */ |
2d473ce9 NC |
1653 | if (strcmp (op_end, opcode->name) && strcmp (op_end, "")) |
1654 | as_warn (_("ignoring operands: %s "), op_end); | |
a75214e5 | 1655 | |
b8a40f53 NC |
1656 | output[0] = INST_BYTE0 (inst); |
1657 | output[1] = INST_BYTE1 (inst); | |
a75214e5 | 1658 | |
252b5132 RH |
1659 | check_literals (opcode->transfer, isize); |
1660 | } | |
1661 | ||
1662 | symbolS * | |
1663 | md_undefined_symbol (name) | |
1664 | char * name; | |
1665 | { | |
1666 | return 0; | |
1667 | } | |
1668 | ||
1669 | void | |
1670 | md_mcore_end () | |
1671 | { | |
1672 | dump_literals (0); | |
1673 | subseg_set (text_section, 0); | |
1674 | } | |
1675 | ||
1676 | /* Various routines to kill one day. */ | |
1677 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1678 | #define MAX_LITTLENUMS 6 | |
1679 | ||
1680 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1681 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1682 | emitted is stored in *sizeP. An error message is returned, or NULL on OK.*/ | |
1683 | char * | |
1684 | md_atof (type, litP, sizeP) | |
1685 | int type; | |
1686 | char * litP; | |
1687 | int * sizeP; | |
1688 | { | |
1689 | int prec; | |
1690 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
b8a40f53 | 1691 | int i; |
252b5132 RH |
1692 | char * t; |
1693 | char * atof_ieee (); | |
1694 | ||
1695 | switch (type) | |
1696 | { | |
1697 | case 'f': | |
1698 | case 'F': | |
1699 | case 's': | |
1700 | case 'S': | |
1701 | prec = 2; | |
1702 | break; | |
1703 | ||
1704 | case 'd': | |
1705 | case 'D': | |
1706 | case 'r': | |
1707 | case 'R': | |
1708 | prec = 4; | |
1709 | break; | |
1710 | ||
1711 | case 'x': | |
1712 | case 'X': | |
1713 | prec = 6; | |
1714 | break; | |
1715 | ||
1716 | case 'p': | |
1717 | case 'P': | |
1718 | prec = 6; | |
1719 | break; | |
1720 | ||
1721 | default: | |
1722 | *sizeP = 0; | |
1723 | return _("Bad call to MD_NTOF()"); | |
1724 | } | |
a75214e5 | 1725 | |
252b5132 | 1726 | t = atof_ieee (input_line_pointer, type, words); |
a75214e5 | 1727 | |
252b5132 RH |
1728 | if (t) |
1729 | input_line_pointer = t; | |
1730 | ||
1731 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
a75214e5 | 1732 | |
bec50466 NC |
1733 | if (! target_big_endian) |
1734 | { | |
1735 | for (i = prec - 1; i >= 0; i--) | |
1736 | { | |
1737 | md_number_to_chars (litP, (valueT) words[i], | |
1738 | sizeof (LITTLENUM_TYPE)); | |
1739 | litP += sizeof (LITTLENUM_TYPE); | |
1740 | } | |
1741 | } | |
1742 | else | |
b8a40f53 NC |
1743 | for (i = 0; i < prec; i++) |
1744 | { | |
1745 | md_number_to_chars (litP, (valueT) words[i], | |
1746 | sizeof (LITTLENUM_TYPE)); | |
1747 | litP += sizeof (LITTLENUM_TYPE); | |
1748 | } | |
a75214e5 | 1749 | |
252b5132 RH |
1750 | return 0; |
1751 | } | |
1752 | \f | |
5a38dc70 | 1753 | const char * md_shortopts = ""; |
252b5132 | 1754 | |
b8a40f53 NC |
1755 | #define OPTION_JSRI2BSR_ON (OPTION_MD_BASE + 0) |
1756 | #define OPTION_JSRI2BSR_OFF (OPTION_MD_BASE + 1) | |
1757 | #define OPTION_SIFILTER_ON (OPTION_MD_BASE + 2) | |
1758 | #define OPTION_SIFILTER_OFF (OPTION_MD_BASE + 3) | |
bec50466 NC |
1759 | #define OPTION_CPU (OPTION_MD_BASE + 4) |
1760 | #define OPTION_EB (OPTION_MD_BASE + 5) | |
1761 | #define OPTION_EL (OPTION_MD_BASE + 6) | |
252b5132 RH |
1762 | |
1763 | struct option md_longopts[] = | |
1764 | { | |
252b5132 RH |
1765 | { "no-jsri2bsr", no_argument, NULL, OPTION_JSRI2BSR_OFF}, |
1766 | { "jsri2bsr", no_argument, NULL, OPTION_JSRI2BSR_ON}, | |
1767 | { "sifilter", no_argument, NULL, OPTION_SIFILTER_ON}, | |
1768 | { "no-sifilter", no_argument, NULL, OPTION_SIFILTER_OFF}, | |
bec50466 NC |
1769 | { "cpu", required_argument, NULL, OPTION_CPU}, |
1770 | { "EB", no_argument, NULL, OPTION_EB}, | |
1771 | { "EL", no_argument, NULL, OPTION_EL}, | |
252b5132 RH |
1772 | { NULL, no_argument, NULL, 0} |
1773 | }; | |
1774 | ||
1775 | size_t md_longopts_size = sizeof (md_longopts); | |
1776 | ||
1777 | int | |
1778 | md_parse_option (c, arg) | |
1779 | int c; | |
1780 | char * arg; | |
1781 | { | |
1782 | int i; | |
1783 | char * p; | |
1784 | ||
1785 | switch (c) | |
1786 | { | |
bec50466 NC |
1787 | case OPTION_CPU: |
1788 | if (streq (arg, "210")) | |
1789 | { | |
1790 | cpu = M210; | |
1791 | target_big_endian = 1; | |
1792 | } | |
1793 | else if (streq (arg, "340")) | |
1794 | cpu = M340; | |
1795 | else | |
5f8075fa | 1796 | as_warn (_("unrecognised cpu type '%s'"), arg); |
bec50466 | 1797 | break; |
a75214e5 | 1798 | |
bec50466 NC |
1799 | case OPTION_EB: target_big_endian = 1; break; |
1800 | case OPTION_EL: target_big_endian = 0; cpu = M340; break; | |
252b5132 RH |
1801 | case OPTION_JSRI2BSR_ON: do_jsri2bsr = 1; break; |
1802 | case OPTION_JSRI2BSR_OFF: do_jsri2bsr = 0; break; | |
1803 | case OPTION_SIFILTER_ON: sifilter_mode = 1; break; | |
1804 | case OPTION_SIFILTER_OFF: sifilter_mode = 0; break; | |
1805 | default: return 0; | |
1806 | } | |
1807 | ||
1808 | return 1; | |
1809 | } | |
1810 | ||
1811 | void | |
1812 | md_show_usage (stream) | |
1813 | FILE * stream; | |
1814 | { | |
1815 | fprintf (stream, _("\ | |
1816 | MCORE specific options:\n\ | |
b8a40f53 | 1817 | -{no-}jsri2bsr {dis}able jsri to bsr transformation (def: dis)\n\ |
bec50466 NC |
1818 | -{no-}sifilter {dis}able silicon filter behavior (def: dis)\n\ |
1819 | -cpu=[210|340] select CPU type\n\ | |
1820 | -EB assemble for a big endian system (default)\n\ | |
1821 | -EL assemble for a little endian system\n")); | |
252b5132 RH |
1822 | } |
1823 | \f | |
1824 | int md_short_jump_size; | |
1825 | ||
1826 | void | |
1827 | md_create_short_jump (ptr, from_Nddr, to_Nddr, frag, to_symbol) | |
1828 | char * ptr; | |
1829 | addressT from_Nddr; | |
1830 | addressT to_Nddr; | |
1831 | fragS * frag; | |
1832 | symbolS * to_symbol; | |
1833 | { | |
1834 | as_fatal (_("failed sanity check: short_jump")); | |
1835 | } | |
1836 | ||
1837 | void | |
1838 | md_create_long_jump (ptr, from_Nddr, to_Nddr, frag, to_symbol) | |
1839 | char * ptr; | |
1840 | addressT from_Nddr; | |
1841 | addressT to_Nddr; | |
1842 | fragS * frag; | |
1843 | symbolS * to_symbol; | |
1844 | { | |
1845 | as_fatal (_("failed sanity check: long_jump")); | |
1846 | } | |
1847 | ||
1848 | /* Called after relaxing, change the frags so they know how big they are. */ | |
1849 | void | |
1850 | md_convert_frag (abfd, sec, fragP) | |
1851 | bfd * abfd; | |
1852 | segT sec; | |
1853 | register fragS * fragP; | |
1854 | { | |
1855 | unsigned char * buffer; | |
1856 | int targ_addr = S_GET_VALUE (fragP->fr_symbol) + fragP->fr_offset; | |
a75214e5 | 1857 | |
252b5132 | 1858 | buffer = (unsigned char *) (fragP->fr_fix + fragP->fr_literal); |
252b5132 RH |
1859 | |
1860 | switch (fragP->fr_subtype) | |
1861 | { | |
93c2a809 AM |
1862 | case C (COND_JUMP, DISP12): |
1863 | case C (UNCD_JUMP, DISP12): | |
252b5132 | 1864 | { |
bcef92fa | 1865 | /* Get the address of the end of the instruction. */ |
252b5132 RH |
1866 | int next_inst = fragP->fr_fix + fragP->fr_address + 2; |
1867 | unsigned char t0; | |
1868 | int disp = targ_addr - next_inst; | |
a75214e5 | 1869 | |
252b5132 | 1870 | if (disp & 1) |
b8a40f53 | 1871 | as_bad (_("odd displacement at %x"), next_inst - 2); |
a75214e5 | 1872 | |
252b5132 | 1873 | disp >>= 1; |
a75214e5 | 1874 | |
bec50466 NC |
1875 | if (! target_big_endian) |
1876 | { | |
1877 | t0 = buffer[1] & 0xF8; | |
a75214e5 | 1878 | |
bec50466 | 1879 | md_number_to_chars (buffer, disp, 2); |
a75214e5 | 1880 | |
bec50466 NC |
1881 | buffer[1] = (buffer[1] & 0x07) | t0; |
1882 | } | |
1883 | else | |
b8a40f53 NC |
1884 | { |
1885 | t0 = buffer[0] & 0xF8; | |
a75214e5 | 1886 | |
b8a40f53 | 1887 | md_number_to_chars (buffer, disp, 2); |
a75214e5 | 1888 | |
b8a40f53 NC |
1889 | buffer[0] = (buffer[0] & 0x07) | t0; |
1890 | } | |
a75214e5 | 1891 | |
252b5132 | 1892 | fragP->fr_fix += 2; |
252b5132 RH |
1893 | } |
1894 | break; | |
1895 | ||
93c2a809 | 1896 | case C (COND_JUMP, DISP32): |
252b5132 RH |
1897 | case C (COND_JUMP, UNDEF_WORD_DISP): |
1898 | { | |
1899 | /* A conditional branch wont fit into 12 bits so: | |
1900 | * b!cond 1f | |
1901 | * jmpi 0f | |
1902 | * .align 2 | |
1903 | * 0: .long disp | |
1904 | * 1: | |
1905 | * | |
1906 | * if the b!cond is 4 byte aligned, the literal which would | |
1907 | * go at x+4 will also be aligned. | |
1908 | */ | |
1909 | int first_inst = fragP->fr_fix + fragP->fr_address; | |
1910 | int needpad = (first_inst & 3); | |
1911 | ||
bec50466 NC |
1912 | if (! target_big_endian) |
1913 | buffer[1] ^= 0x08; | |
1914 | else | |
b8a40f53 | 1915 | buffer[0] ^= 0x08; /* Toggle T/F bit */ |
252b5132 RH |
1916 | |
1917 | buffer[2] = INST_BYTE0 (MCORE_INST_JMPI); /* Build jmpi */ | |
1918 | buffer[3] = INST_BYTE1 (MCORE_INST_JMPI); | |
a75214e5 | 1919 | |
252b5132 RH |
1920 | if (needpad) |
1921 | { | |
bec50466 NC |
1922 | if (! target_big_endian) |
1923 | { | |
1924 | buffer[0] = 4; /* branch over jmpi, pad, and ptr */ | |
1925 | buffer[2] = 1; /* jmpi offset of 1 gets the pointer */ | |
1926 | } | |
1927 | else | |
b8a40f53 NC |
1928 | { |
1929 | buffer[1] = 4; /* branch over jmpi, pad, and ptr */ | |
1930 | buffer[3] = 1; /* jmpi offset of 1 gets the pointer */ | |
1931 | } | |
a75214e5 | 1932 | |
252b5132 RH |
1933 | buffer[4] = 0; /* alignment/pad */ |
1934 | buffer[5] = 0; | |
1935 | buffer[6] = 0; /* space for 32 bit address */ | |
1936 | buffer[7] = 0; | |
1937 | buffer[8] = 0; | |
1938 | buffer[9] = 0; | |
a75214e5 | 1939 | |
252b5132 RH |
1940 | /* Make reloc for the long disp */ |
1941 | fix_new (fragP, fragP->fr_fix + 6, 4, | |
1942 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
a75214e5 | 1943 | |
252b5132 RH |
1944 | fragP->fr_fix += C32_LEN; |
1945 | } | |
1946 | else | |
1947 | { | |
1948 | /* See comment below about this given gas' limitations for | |
1949 | shrinking the fragment. '3' is the amount of code that | |
1950 | we inserted here, but '4' is right for the space we reserved | |
a75214e5 | 1951 | for this fragment. */ |
bec50466 NC |
1952 | if (! target_big_endian) |
1953 | { | |
1954 | buffer[0] = 3; /* branch over jmpi, and ptr */ | |
1955 | buffer[2] = 0; /* jmpi offset of 0 gets the pointer */ | |
1956 | } | |
1957 | else | |
b8a40f53 NC |
1958 | { |
1959 | buffer[1] = 3; /* branch over jmpi, and ptr */ | |
1960 | buffer[3] = 0; /* jmpi offset of 0 gets the pointer */ | |
1961 | } | |
a75214e5 | 1962 | |
252b5132 RH |
1963 | buffer[4] = 0; /* space for 32 bit address */ |
1964 | buffer[5] = 0; | |
1965 | buffer[6] = 0; | |
1966 | buffer[7] = 0; | |
a75214e5 | 1967 | |
252b5132 RH |
1968 | /* Make reloc for the long disp. */ |
1969 | fix_new (fragP, fragP->fr_fix + 4, 4, | |
1970 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
1971 | fragP->fr_fix += C32_LEN; | |
1972 | ||
b8a40f53 NC |
1973 | /* Frag is actually shorter (see the other side of this ifdef) |
1974 | but gas isn't prepared for that. We have to re-adjust | |
a75214e5 | 1975 | the branch displacement so that it goes beyond the |
252b5132 RH |
1976 | full length of the fragment, not just what we actually |
1977 | filled in. */ | |
bec50466 NC |
1978 | if (! target_big_endian) |
1979 | buffer[0] = 4; /* jmpi, ptr, and the 'tail pad' */ | |
1980 | else | |
b8a40f53 | 1981 | buffer[1] = 4; /* jmpi, ptr, and the 'tail pad' */ |
252b5132 | 1982 | } |
252b5132 RH |
1983 | } |
1984 | break; | |
1985 | ||
93c2a809 | 1986 | case C (UNCD_JUMP, DISP32): |
252b5132 RH |
1987 | case C (UNCD_JUMP, UNDEF_WORD_DISP): |
1988 | { | |
1989 | /* An unconditional branch will not fit in 12 bits, make code which | |
1990 | looks like: | |
1991 | jmpi 0f | |
1992 | .align 2 | |
1993 | 0: .long disp | |
1994 | we need a pad if "first_inst" is 4 byte aligned. | |
1995 | [because the natural literal place is x + 2] */ | |
1996 | int first_inst = fragP->fr_fix + fragP->fr_address; | |
1997 | int needpad = !(first_inst & 3); | |
1998 | ||
1999 | buffer[0] = INST_BYTE0 (MCORE_INST_JMPI); /* Build jmpi */ | |
2000 | buffer[1] = INST_BYTE1 (MCORE_INST_JMPI); | |
2001 | ||
2002 | if (needpad) | |
2003 | { | |
bec50466 NC |
2004 | if (! target_big_endian) |
2005 | buffer[0] = 1; /* jmpi offset of 1 since padded */ | |
2006 | else | |
b8a40f53 | 2007 | buffer[1] = 1; /* jmpi offset of 1 since padded */ |
252b5132 RH |
2008 | buffer[2] = 0; /* alignment */ |
2009 | buffer[3] = 0; | |
2010 | buffer[4] = 0; /* space for 32 bit address */ | |
2011 | buffer[5] = 0; | |
2012 | buffer[6] = 0; | |
2013 | buffer[7] = 0; | |
a75214e5 | 2014 | |
bcef92fa | 2015 | /* Make reloc for the long disp. */ |
252b5132 RH |
2016 | fix_new (fragP, fragP->fr_fix + 4, 4, |
2017 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
a75214e5 | 2018 | |
252b5132 RH |
2019 | fragP->fr_fix += U32_LEN; |
2020 | } | |
2021 | else | |
2022 | { | |
bec50466 NC |
2023 | if (! target_big_endian) |
2024 | buffer[0] = 0; /* jmpi offset of 0 if no pad */ | |
2025 | else | |
b8a40f53 | 2026 | buffer[1] = 0; /* jmpi offset of 0 if no pad */ |
252b5132 RH |
2027 | buffer[2] = 0; /* space for 32 bit address */ |
2028 | buffer[3] = 0; | |
2029 | buffer[4] = 0; | |
2030 | buffer[5] = 0; | |
a75214e5 | 2031 | |
bcef92fa | 2032 | /* Make reloc for the long disp. */ |
252b5132 RH |
2033 | fix_new (fragP, fragP->fr_fix + 2, 4, |
2034 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_32); | |
2035 | fragP->fr_fix += U32_LEN; | |
2036 | } | |
252b5132 RH |
2037 | } |
2038 | break; | |
2039 | ||
2040 | default: | |
2041 | abort (); | |
2042 | } | |
2043 | } | |
2044 | ||
2045 | /* Applies the desired value to the specified location. | |
2046 | Also sets up addends for 'rela' type relocations. */ | |
94f592af NC |
2047 | |
2048 | void | |
2049 | md_apply_fix3 (fixP, valP, segment) | |
252b5132 | 2050 | fixS * fixP; |
94f592af | 2051 | valueT * valP; |
252b5132 RH |
2052 | segT segment; |
2053 | { | |
2054 | char * buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
2055 | char * file = fixP->fx_file ? fixP->fx_file : _("unknown"); | |
2056 | const char * symname; | |
2057 | /* Note: use offsetT because it is signed, valueT is unsigned. */ | |
a161fe53 | 2058 | offsetT val = *valP; |
a75214e5 | 2059 | |
252b5132 RH |
2060 | symname = fixP->fx_addsy ? S_GET_NAME (fixP->fx_addsy) : _("<unknown>"); |
2061 | /* Save this for the addend in the relocation record. */ | |
2062 | fixP->fx_addnumber = val; | |
2063 | ||
a161fe53 | 2064 | if (fixP->fx_addsy != NULL) |
252b5132 | 2065 | { |
252b5132 RH |
2066 | #ifdef OBJ_ELF |
2067 | /* For ELF we can just return and let the reloc that will be generated | |
2068 | take care of everything. For COFF we still have to insert 'val' | |
2069 | into the insn since the addend field will be ignored. */ | |
94f592af | 2070 | return; |
252b5132 RH |
2071 | #endif |
2072 | } | |
2073 | else | |
2074 | fixP->fx_done = 1; | |
a75214e5 | 2075 | |
252b5132 RH |
2076 | switch (fixP->fx_r_type) |
2077 | { | |
2078 | case BFD_RELOC_MCORE_PCREL_IMM11BY2: /* second byte of 2 byte opcode */ | |
2079 | if ((val & 1) != 0) | |
2080 | as_bad_where (file, fixP->fx_line, | |
2081 | _("odd distance branch (0x%x bytes)"), val); | |
2082 | val /= 2; | |
2083 | if (((val & ~0x3ff) != 0) && ((val | 0x3ff) != -1)) | |
2084 | as_bad_where (file, fixP->fx_line, | |
2085 | _("pcrel for branch to %s too far (0x%x)"), | |
2086 | symname, val); | |
bec50466 NC |
2087 | if (target_big_endian) |
2088 | { | |
2089 | buf[0] |= ((val >> 8) & 0x7); | |
2090 | buf[1] |= (val & 0xff); | |
2091 | } | |
2092 | else | |
2093 | { | |
eaa15ab8 NC |
2094 | buf[1] |= ((val >> 8) & 0x7); |
2095 | buf[0] |= (val & 0xff); | |
bec50466 | 2096 | } |
b8a40f53 | 2097 | break; |
252b5132 RH |
2098 | |
2099 | case BFD_RELOC_MCORE_PCREL_IMM8BY4: /* lower 8 bits of 2 byte opcode */ | |
2100 | val += 3; | |
2101 | val /= 4; | |
2102 | if (val & ~0xff) | |
2103 | as_bad_where (file, fixP->fx_line, | |
2104 | _("pcrel for lrw/jmpi/jsri to %s too far (0x%x)"), | |
2105 | symname, val); | |
bec50466 NC |
2106 | else if (! target_big_endian) |
2107 | buf[0] |= (val & 0xff); | |
252b5132 RH |
2108 | else |
2109 | buf[1] |= (val & 0xff); | |
b8a40f53 | 2110 | break; |
252b5132 RH |
2111 | |
2112 | case BFD_RELOC_MCORE_PCREL_IMM4BY2: /* loopt instruction */ | |
2113 | if ((val < -32) || (val > -2)) | |
2114 | as_bad_where (file, fixP->fx_line, | |
2115 | _("pcrel for loopt too far (0x%x)"), val); | |
2116 | val /= 2; | |
bec50466 NC |
2117 | if (! target_big_endian) |
2118 | buf[0] |= (val & 0xf); | |
2119 | else | |
2d473ce9 | 2120 | buf[1] |= (val & 0xf); |
252b5132 RH |
2121 | break; |
2122 | ||
2123 | case BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2: | |
2124 | /* Conditional linker map jsri to bsr. */ | |
a75214e5 | 2125 | /* If its a local target and close enough, fix it. |
5f8075fa | 2126 | NB: >= -2k for backwards bsr; < 2k for forwards... */ |
252b5132 RH |
2127 | if (fixP->fx_addsy == 0 && val >= -2048 && val < 2048) |
2128 | { | |
2129 | long nval = (val / 2) & 0x7ff; | |
2130 | nval |= MCORE_INST_BSR; | |
a75214e5 | 2131 | |
252b5132 | 2132 | /* REPLACE the instruction, don't just modify it. */ |
b8a40f53 NC |
2133 | buf[0] = INST_BYTE0 (nval); |
2134 | buf[1] = INST_BYTE1 (nval); | |
252b5132 RH |
2135 | } |
2136 | else | |
2137 | fixP->fx_done = 0; | |
2138 | break; | |
2139 | ||
2140 | case BFD_RELOC_MCORE_PCREL_32: | |
2141 | case BFD_RELOC_VTABLE_INHERIT: | |
2142 | case BFD_RELOC_VTABLE_ENTRY: | |
2143 | fixP->fx_done = 0; | |
2144 | break; | |
a75214e5 | 2145 | |
252b5132 RH |
2146 | default: |
2147 | if (fixP->fx_addsy != NULL) | |
2148 | { | |
2149 | /* If the fix is an absolute reloc based on a symbol's | |
2150 | address, then it cannot be resolved until the final link. */ | |
2151 | fixP->fx_done = 0; | |
2152 | } | |
a75214e5 | 2153 | #ifdef OBJ_ELF |
252b5132 RH |
2154 | else |
2155 | #endif | |
2156 | { | |
2157 | if (fixP->fx_size == 4) | |
b8a40f53 | 2158 | ; |
252b5132 | 2159 | else if (fixP->fx_size == 2 && val >= -32768 && val <= 32767) |
b8a40f53 | 2160 | ; |
252b5132 | 2161 | else if (fixP->fx_size == 1 && val >= -256 && val <= 255) |
b8a40f53 | 2162 | ; |
252b5132 RH |
2163 | else |
2164 | abort (); | |
b8a40f53 | 2165 | md_number_to_chars (buf, val, fixP->fx_size); |
252b5132 RH |
2166 | } |
2167 | break; | |
2168 | } | |
252b5132 RH |
2169 | } |
2170 | ||
2171 | void | |
2172 | md_operand (expressionP) | |
2173 | expressionS * expressionP; | |
2174 | { | |
2175 | /* Ignore leading hash symbol, if poresent. */ | |
2176 | if (* input_line_pointer == '#') | |
2177 | { | |
2178 | input_line_pointer ++; | |
2179 | expression (expressionP); | |
2180 | } | |
2181 | } | |
2182 | ||
2183 | int md_long_jump_size; | |
2184 | ||
2185 | /* Called just before address relaxation, return the length | |
2186 | by which a fragment must grow to reach it's destination. */ | |
2187 | int | |
2188 | md_estimate_size_before_relax (fragP, segment_type) | |
2189 | register fragS * fragP; | |
2190 | register segT segment_type; | |
2191 | { | |
2192 | switch (fragP->fr_subtype) | |
2193 | { | |
93c2a809 AM |
2194 | default: |
2195 | abort (); | |
2196 | ||
252b5132 RH |
2197 | case C (UNCD_JUMP, UNDEF_DISP): |
2198 | /* Used to be a branch to somewhere which was unknown. */ | |
2199 | if (!fragP->fr_symbol) | |
2200 | { | |
93c2a809 | 2201 | fragP->fr_subtype = C (UNCD_JUMP, DISP12); |
252b5132 RH |
2202 | } |
2203 | else if (S_GET_SEGMENT (fragP->fr_symbol) == segment_type) | |
2204 | { | |
93c2a809 | 2205 | fragP->fr_subtype = C (UNCD_JUMP, DISP12); |
252b5132 RH |
2206 | } |
2207 | else | |
2208 | { | |
2209 | fragP->fr_subtype = C (UNCD_JUMP, UNDEF_WORD_DISP); | |
252b5132 RH |
2210 | } |
2211 | break; | |
2212 | ||
252b5132 | 2213 | case C (COND_JUMP, UNDEF_DISP): |
a75214e5 | 2214 | /* Used to be a branch to somewhere which was unknown. */ |
252b5132 RH |
2215 | if (fragP->fr_symbol |
2216 | && S_GET_SEGMENT (fragP->fr_symbol) == segment_type) | |
2217 | { | |
2218 | /* Got a symbol and it's defined in this segment, become byte | |
2219 | sized - maybe it will fix up */ | |
93c2a809 | 2220 | fragP->fr_subtype = C (COND_JUMP, DISP12); |
252b5132 RH |
2221 | } |
2222 | else if (fragP->fr_symbol) | |
2223 | { | |
2224 | /* Its got a segment, but its not ours, so it will always be long. */ | |
2225 | fragP->fr_subtype = C (COND_JUMP, UNDEF_WORD_DISP); | |
252b5132 RH |
2226 | } |
2227 | else | |
2228 | { | |
2229 | /* We know the abs value. */ | |
93c2a809 | 2230 | fragP->fr_subtype = C (COND_JUMP, DISP12); |
252b5132 | 2231 | } |
93c2a809 | 2232 | break; |
252b5132 | 2233 | |
93c2a809 | 2234 | case C (UNCD_JUMP, DISP12): |
e66457fb | 2235 | case C (UNCD_JUMP, DISP32): |
93c2a809 AM |
2236 | case C (UNCD_JUMP, UNDEF_WORD_DISP): |
2237 | case C (COND_JUMP, DISP12): | |
e66457fb | 2238 | case C (COND_JUMP, DISP32): |
93c2a809 AM |
2239 | case C (COND_JUMP, UNDEF_WORD_DISP): |
2240 | /* When relaxing a section for the second time, we don't need to | |
e66457fb | 2241 | do anything besides return the current size. */ |
252b5132 RH |
2242 | break; |
2243 | } | |
a75214e5 | 2244 | |
606ab118 | 2245 | return md_relax_table[fragP->fr_subtype].rlx_length; |
252b5132 RH |
2246 | } |
2247 | ||
bcef92fa | 2248 | /* Put number into target byte order. */ |
252b5132 RH |
2249 | void |
2250 | md_number_to_chars (ptr, use, nbytes) | |
2251 | char * ptr; | |
2252 | valueT use; | |
2253 | int nbytes; | |
2254 | { | |
bec50466 NC |
2255 | if (! target_big_endian) |
2256 | switch (nbytes) | |
2257 | { | |
2258 | case 4: ptr[3] = (use >> 24) & 0xff; /* fall through */ | |
2259 | case 3: ptr[2] = (use >> 16) & 0xff; /* fall through */ | |
2260 | case 2: ptr[1] = (use >> 8) & 0xff; /* fall through */ | |
2261 | case 1: ptr[0] = (use >> 0) & 0xff; break; | |
2262 | default: abort (); | |
2263 | } | |
2264 | else | |
b8a40f53 NC |
2265 | switch (nbytes) |
2266 | { | |
2267 | case 4: *ptr++ = (use >> 24) & 0xff; /* fall through */ | |
2268 | case 3: *ptr++ = (use >> 16) & 0xff; /* fall through */ | |
2269 | case 2: *ptr++ = (use >> 8) & 0xff; /* fall through */ | |
2270 | case 1: *ptr++ = (use >> 0) & 0xff; break; | |
2271 | default: abort (); | |
2272 | } | |
252b5132 RH |
2273 | } |
2274 | ||
2275 | /* Round up a section size to the appropriate boundary. */ | |
2276 | valueT | |
2277 | md_section_align (segment, size) | |
2278 | segT segment; | |
2279 | valueT size; | |
2280 | { | |
2281 | return size; /* Byte alignment is fine */ | |
2282 | } | |
2283 | ||
252b5132 RH |
2284 | /* The location from which a PC relative jump should be calculated, |
2285 | given a PC relative reloc. */ | |
2286 | long | |
2287 | md_pcrel_from_section (fixp, sec) | |
2288 | fixS * fixp; | |
2289 | segT sec; | |
2290 | { | |
2291 | #ifdef OBJ_ELF | |
2292 | /* If the symbol is undefined or defined in another section | |
2293 | we leave the add number alone for the linker to fix it later. | |
a75214e5 | 2294 | Only account for the PC pre-bump (which is 2 bytes on the MCore). */ |
252b5132 RH |
2295 | if (fixp->fx_addsy != (symbolS *) NULL |
2296 | && (! S_IS_DEFINED (fixp->fx_addsy) | |
2297 | || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) | |
a75214e5 | 2298 | |
252b5132 RH |
2299 | { |
2300 | assert (fixp->fx_size == 2); /* must be an insn */ | |
2301 | return fixp->fx_size; | |
2302 | } | |
2303 | #endif | |
2304 | ||
a75214e5 | 2305 | /* The case where we are going to resolve things... */ |
252b5132 RH |
2306 | return fixp->fx_size + fixp->fx_where + fixp->fx_frag->fr_address; |
2307 | } | |
2308 | ||
2309 | #define F(SZ,PCREL) (((SZ) << 1) + (PCREL)) | |
2310 | #define MAP(SZ,PCREL,TYPE) case F (SZ, PCREL): code = (TYPE); break | |
2311 | ||
2312 | arelent * | |
2313 | tc_gen_reloc (section, fixp) | |
2314 | asection * section; | |
2315 | fixS * fixp; | |
2316 | { | |
2317 | arelent * rel; | |
2318 | bfd_reloc_code_real_type code; | |
2319 | int handled = 0; | |
2320 | ||
2321 | switch (fixp->fx_r_type) | |
2322 | { | |
a75214e5 | 2323 | /* These confuse the size/pcrel macro approach. */ |
252b5132 RH |
2324 | case BFD_RELOC_VTABLE_INHERIT: |
2325 | case BFD_RELOC_VTABLE_ENTRY: | |
2326 | case BFD_RELOC_MCORE_PCREL_IMM4BY2: | |
2327 | case BFD_RELOC_MCORE_PCREL_IMM8BY4: | |
2328 | case BFD_RELOC_MCORE_PCREL_IMM11BY2: | |
2329 | case BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2: | |
a75214e5 | 2330 | case BFD_RELOC_RVA: |
252b5132 RH |
2331 | code = fixp->fx_r_type; |
2332 | break; | |
a75214e5 | 2333 | |
252b5132 RH |
2334 | default: |
2335 | switch (F (fixp->fx_size, fixp->fx_pcrel)) | |
5f8075fa AM |
2336 | { |
2337 | MAP (1, 0, BFD_RELOC_8); | |
2338 | MAP (2, 0, BFD_RELOC_16); | |
2339 | MAP (4, 0, BFD_RELOC_32); | |
2340 | MAP (1, 1, BFD_RELOC_8_PCREL); | |
2341 | MAP (2, 1, BFD_RELOC_16_PCREL); | |
2342 | MAP (4, 1, BFD_RELOC_32_PCREL); | |
2343 | default: | |
252b5132 | 2344 | code = fixp->fx_r_type; |
5f8075fa | 2345 | as_bad (_("Can not do %d byte %srelocation"), |
252b5132 | 2346 | fixp->fx_size, |
5f8075fa AM |
2347 | fixp->fx_pcrel ? _("pc-relative") : ""); |
2348 | } | |
252b5132 RH |
2349 | break; |
2350 | } | |
2351 | ||
2352 | rel = (arelent *) xmalloc (sizeof (arelent)); | |
310b5aa2 ILT |
2353 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
2354 | *rel->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
2355 | rel->address = fixp->fx_frag->fr_address + fixp->fx_where; |
2356 | /* Always pass the addend along! */ | |
2357 | rel->addend = fixp->fx_addnumber; | |
2358 | ||
2359 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); | |
a75214e5 | 2360 | |
252b5132 RH |
2361 | if (rel->howto == NULL) |
2362 | { | |
2363 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
5f8075fa AM |
2364 | _("Cannot represent relocation type %s"), |
2365 | bfd_get_reloc_code_name (code)); | |
a75214e5 | 2366 | |
252b5132 RH |
2367 | /* Set howto to a garbage value so that we can keep going. */ |
2368 | rel->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_32); | |
2369 | assert (rel->howto != NULL); | |
2370 | } | |
2371 | ||
2372 | return rel; | |
2373 | } | |
2374 | ||
2375 | #ifdef OBJ_ELF | |
2376 | /* See whether we need to force a relocation into the output file. | |
2377 | This is used to force out switch and PC relative relocations when | |
2378 | relaxing. */ | |
2379 | int | |
2380 | mcore_force_relocation (fix) | |
2381 | fixS * fix; | |
2382 | { | |
2383 | if ( fix->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
f11900d0 | 2384 | || fix->fx_r_type == BFD_RELOC_VTABLE_ENTRY |
2d473ce9 | 2385 | || fix->fx_r_type == BFD_RELOC_RVA) |
252b5132 RH |
2386 | return 1; |
2387 | ||
a161fe53 | 2388 | return S_FORCE_RELOC (fix->fx_addsy); |
252b5132 RH |
2389 | } |
2390 | ||
2391 | /* Return true if the fix can be handled by GAS, false if it must | |
2392 | be passed through to the linker. */ | |
b34976b6 | 2393 | bfd_boolean |
252b5132 RH |
2394 | mcore_fix_adjustable (fixP) |
2395 | fixS * fixP; | |
2396 | { | |
252b5132 RH |
2397 | /* We need the symbol name for the VTABLE entries. */ |
2398 | if ( fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
2399 | || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
2400 | return 0; | |
2401 | ||
2402 | return 1; | |
2403 | } | |
252b5132 | 2404 | #endif /* OBJ_ELF */ |