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0ebb9a87 | 1 | /* tc-frv.c -- Assembler for the Fujitsu FRV. |
ae6063d4 | 2 | Copyright 2002, 2003 Free Software Foundation. |
0ebb9a87 DB |
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 | |
17 | along with GAS; see the file COPYING. If not, write to | |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include "as.h" | |
0ebb9a87 DB |
23 | #include "subsegs.h" |
24 | #include "symcat.h" | |
25 | #include "opcodes/frv-desc.h" | |
26 | #include "opcodes/frv-opc.h" | |
27 | #include "cgen.h" | |
28 | #include "libbfd.h" | |
29 | #include "elf/common.h" | |
30 | #include "elf/frv.h" | |
31 | ||
32 | /* Structure to hold all of the different components describing | |
33 | an individual instruction. */ | |
34 | typedef struct | |
35 | { | |
36 | const CGEN_INSN * insn; | |
37 | const CGEN_INSN * orig_insn; | |
38 | CGEN_FIELDS fields; | |
39 | #if CGEN_INT_INSN_P | |
40 | CGEN_INSN_INT buffer [1]; | |
41 | #define INSN_VALUE(buf) (*(buf)) | |
42 | #else | |
43 | unsigned char buffer [CGEN_MAX_INSN_SIZE]; | |
44 | #define INSN_VALUE(buf) (buf) | |
45 | #endif | |
46 | char * addr; | |
47 | fragS * frag; | |
48 | int num_fixups; | |
49 | fixS * fixups [GAS_CGEN_MAX_FIXUPS]; | |
50 | int indices [MAX_OPERAND_INSTANCES]; | |
51 | } | |
52 | frv_insn; | |
53 | ||
54 | enum vliw_insn_type | |
55 | { | |
56 | VLIW_GENERIC_TYPE, /* Don't care about this insn. */ | |
57 | VLIW_BRANCH_TYPE, /* A Branch. */ | |
58 | VLIW_LABEL_TYPE, /* A Label. */ | |
59 | VLIW_NOP_TYPE, /* A NOP. */ | |
60 | VLIW_BRANCH_HAS_NOPS /* A Branch that requires NOPS. */ | |
61 | }; | |
62 | ||
63 | /* We're going to use these in the fr_subtype field to mark | |
64 | whether to keep inserted nops. */ | |
65 | ||
66 | #define NOP_KEEP 1 /* Keep these NOPS. */ | |
67 | #define NOP_DELETE 2 /* Delete these NOPS. */ | |
68 | ||
b34976b6 AM |
69 | #define DO_COUNT TRUE |
70 | #define DONT_COUNT FALSE | |
0ebb9a87 DB |
71 | |
72 | /* A list of insns within a VLIW insn. */ | |
73 | struct vliw_insn_list | |
74 | { | |
75 | /* The type of this insn. */ | |
76 | enum vliw_insn_type type; | |
77 | ||
78 | /* The corresponding gas insn information. */ | |
79 | const CGEN_INSN *insn; | |
80 | ||
81 | /* For branches and labels, the symbol that is referenced. */ | |
82 | symbolS *sym; | |
83 | ||
84 | /* For branches, the frag containing the single nop that was generated. */ | |
85 | fragS *snop_frag; | |
86 | ||
87 | /* For branches, the frag containing the double nop that was generated. */ | |
88 | fragS *dnop_frag; | |
89 | ||
90 | /* Pointer to raw data for this insn. */ | |
91 | char *address; | |
92 | ||
93 | /* Next insn in list. */ | |
94 | struct vliw_insn_list *next; | |
95 | }; | |
96 | ||
97 | static struct vliw_insn_list single_nop_insn = { | |
98 | VLIW_NOP_TYPE, NULL, NULL, NULL, NULL, NULL, NULL }; | |
99 | ||
100 | static struct vliw_insn_list double_nop_insn = { | |
101 | VLIW_NOP_TYPE, NULL, NULL, NULL, NULL, NULL, NULL }; | |
102 | ||
103 | struct vliw_chain | |
104 | { | |
105 | int num; | |
106 | int insn_count; | |
107 | struct vliw_insn_list *insn_list; | |
108 | struct vliw_chain *next; | |
109 | }; | |
110 | ||
111 | static struct vliw_chain *vliw_chain_top; | |
112 | static struct vliw_chain *current_vliw_chain; | |
113 | static struct vliw_chain *previous_vliw_chain; | |
114 | static struct vliw_insn_list *current_vliw_insn; | |
115 | ||
116 | const char comment_chars[] = ";"; | |
117 | const char line_comment_chars[] = "#"; | |
118 | const char line_separator_chars[] = ""; | |
119 | const char EXP_CHARS[] = "eE"; | |
120 | const char FLT_CHARS[] = "dD"; | |
121 | ||
122 | static FRV_VLIW vliw; | |
123 | ||
124 | /* Default machine */ | |
125 | ||
126 | #ifdef DEFAULT_CPU_FRV | |
127 | #define DEFAULT_MACHINE bfd_mach_frv | |
128 | #define DEFAULT_FLAGS EF_FRV_CPU_GENERIC | |
129 | ||
130 | #else | |
131 | #ifdef DEFAULT_CPU_FR300 | |
132 | #define DEFAULT_MACHINE bfd_mach_fr300 | |
133 | #define DEFAULT_FLAGS EF_FRV_CPU_FR300 | |
134 | ||
135 | #else | |
136 | #ifdef DEFAULT_CPU_SIMPLE | |
137 | #define DEFAULT_MACHINE bfd_mach_frvsimple | |
138 | #define DEFAULT_FLAGS EF_FRV_CPU_SIMPLE | |
139 | ||
140 | #else | |
141 | #ifdef DEFAULT_CPU_TOMCAT | |
142 | #define DEFAULT_MACHINE bfd_mach_frvtomcat | |
143 | #define DEFAULT_FLAGS EF_FRV_CPU_TOMCAT | |
144 | ||
145 | #else | |
146 | #ifdef DEFAULT_CPU_FR400 | |
147 | #define DEFAULT_MACHINE bfd_mach_fr400 | |
148 | #define DEFAULT_FLAGS EF_FRV_CPU_FR400 | |
149 | ||
1ae31fee DB |
150 | #else |
151 | #ifdef DEFAULT_CPU_FR550 | |
152 | #define DEFAULT_MACHINE bfd_mach_fr550 | |
153 | #define DEFAULT_FLAGS EF_FRV_CPU_FR550 | |
154 | ||
0ebb9a87 DB |
155 | #else |
156 | #define DEFAULT_MACHINE bfd_mach_fr500 | |
157 | #define DEFAULT_FLAGS EF_FRV_CPU_FR500 | |
158 | #endif | |
159 | #endif | |
160 | #endif | |
161 | #endif | |
162 | #endif | |
1ae31fee | 163 | #endif |
0ebb9a87 DB |
164 | |
165 | static unsigned long frv_mach = bfd_mach_frv; | |
166 | ||
167 | /* Flags to set in the elf header */ | |
168 | static flagword frv_flags = DEFAULT_FLAGS; | |
169 | ||
170 | static int frv_user_set_flags_p = 0; | |
171 | static int frv_pic_p = 0; | |
172 | static const char *frv_pic_flag = (const char *)0; | |
173 | ||
174 | /* Print tomcat-specific debugging info. */ | |
175 | static int tomcat_debug = 0; | |
176 | ||
177 | /* Tomcat-specific NOP statistics. */ | |
178 | static int tomcat_stats = 0; | |
179 | static int tomcat_doubles = 0; | |
180 | static int tomcat_singles = 0; | |
181 | ||
182 | /* Forward reference to static functions */ | |
183 | static void frv_set_flags PARAMS ((int)); | |
184 | static void frv_pic_ptr PARAMS ((int)); | |
185 | static void frv_frob_file_section PARAMS ((bfd *, asection *, PTR)); | |
186 | ||
187 | /* The target specific pseudo-ops which we support. */ | |
188 | const pseudo_typeS md_pseudo_table[] = | |
189 | { | |
190 | { "eflags", frv_set_flags, 0 }, | |
191 | { "word", cons, 4 }, | |
192 | { "picptr", frv_pic_ptr, 4 }, | |
0ebb9a87 DB |
193 | { NULL, NULL, 0 } |
194 | }; | |
195 | ||
196 | \f | |
197 | #define FRV_SHORTOPTS "G:" | |
198 | const char * md_shortopts = FRV_SHORTOPTS; | |
199 | ||
200 | #define OPTION_GPR_32 (OPTION_MD_BASE) | |
201 | #define OPTION_GPR_64 (OPTION_MD_BASE + 1) | |
202 | #define OPTION_FPR_32 (OPTION_MD_BASE + 2) | |
203 | #define OPTION_FPR_64 (OPTION_MD_BASE + 3) | |
204 | #define OPTION_SOFT_FLOAT (OPTION_MD_BASE + 4) | |
205 | #define OPTION_DWORD_YES (OPTION_MD_BASE + 5) | |
206 | #define OPTION_DWORD_NO (OPTION_MD_BASE + 6) | |
207 | #define OPTION_DOUBLE (OPTION_MD_BASE + 7) | |
208 | #define OPTION_NO_DOUBLE (OPTION_MD_BASE + 8) | |
209 | #define OPTION_MEDIA (OPTION_MD_BASE + 9) | |
210 | #define OPTION_NO_MEDIA (OPTION_MD_BASE + 10) | |
211 | #define OPTION_CPU (OPTION_MD_BASE + 11) | |
212 | #define OPTION_PIC (OPTION_MD_BASE + 12) | |
213 | #define OPTION_BIGPIC (OPTION_MD_BASE + 13) | |
214 | #define OPTION_LIBPIC (OPTION_MD_BASE + 14) | |
215 | #define OPTION_MULADD (OPTION_MD_BASE + 15) | |
216 | #define OPTION_NO_MULADD (OPTION_MD_BASE + 16) | |
217 | #define OPTION_TOMCAT_DEBUG (OPTION_MD_BASE + 17) | |
218 | #define OPTION_TOMCAT_STATS (OPTION_MD_BASE + 18) | |
219 | #define OPTION_PACK (OPTION_MD_BASE + 19) | |
220 | #define OPTION_NO_PACK (OPTION_MD_BASE + 20) | |
221 | ||
222 | struct option md_longopts[] = | |
223 | { | |
224 | { "mgpr-32", no_argument, NULL, OPTION_GPR_32 }, | |
225 | { "mgpr-64", no_argument, NULL, OPTION_GPR_64 }, | |
226 | { "mfpr-32", no_argument, NULL, OPTION_FPR_32 }, | |
227 | { "mfpr-64", no_argument, NULL, OPTION_FPR_64 }, | |
228 | { "mhard-float", no_argument, NULL, OPTION_FPR_64 }, | |
229 | { "msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT }, | |
230 | { "mdword", no_argument, NULL, OPTION_DWORD_YES }, | |
231 | { "mno-dword", no_argument, NULL, OPTION_DWORD_NO }, | |
232 | { "mdouble", no_argument, NULL, OPTION_DOUBLE }, | |
233 | { "mno-double", no_argument, NULL, OPTION_NO_DOUBLE }, | |
234 | { "mmedia", no_argument, NULL, OPTION_MEDIA }, | |
235 | { "mno-media", no_argument, NULL, OPTION_NO_MEDIA }, | |
236 | { "mcpu", required_argument, NULL, OPTION_CPU }, | |
237 | { "mpic", no_argument, NULL, OPTION_PIC }, | |
238 | { "mPIC", no_argument, NULL, OPTION_BIGPIC }, | |
239 | { "mlibrary-pic", no_argument, NULL, OPTION_LIBPIC }, | |
240 | { "mmuladd", no_argument, NULL, OPTION_MULADD }, | |
241 | { "mno-muladd", no_argument, NULL, OPTION_NO_MULADD }, | |
242 | { "mtomcat-debug", no_argument, NULL, OPTION_TOMCAT_DEBUG }, | |
243 | { "mtomcat-stats", no_argument, NULL, OPTION_TOMCAT_STATS }, | |
244 | { "mpack", no_argument, NULL, OPTION_PACK }, | |
245 | { "mno-pack", no_argument, NULL, OPTION_NO_PACK }, | |
246 | { NULL, no_argument, NULL, 0 }, | |
247 | }; | |
248 | ||
249 | size_t md_longopts_size = sizeof (md_longopts); | |
250 | ||
251 | /* What value to give to bfd_set_gp_size. */ | |
252 | static int g_switch_value = 8; | |
253 | ||
254 | int | |
255 | md_parse_option (c, arg) | |
256 | int c; | |
257 | char * arg; | |
258 | { | |
259 | switch (c) | |
260 | { | |
261 | default: | |
262 | return 0; | |
263 | ||
264 | case 'G': | |
265 | g_switch_value = atoi (arg); | |
266 | if (! g_switch_value) | |
267 | frv_flags |= EF_FRV_G0; | |
268 | break; | |
269 | ||
270 | case OPTION_GPR_32: | |
271 | frv_flags = (frv_flags & ~EF_FRV_GPR_MASK) | EF_FRV_GPR_32; | |
272 | break; | |
273 | ||
274 | case OPTION_GPR_64: | |
275 | frv_flags = (frv_flags & ~EF_FRV_GPR_MASK) | EF_FRV_GPR_64; | |
276 | break; | |
277 | ||
278 | case OPTION_FPR_32: | |
279 | frv_flags = (frv_flags & ~EF_FRV_FPR_MASK) | EF_FRV_FPR_32; | |
280 | break; | |
281 | ||
282 | case OPTION_FPR_64: | |
283 | frv_flags = (frv_flags & ~EF_FRV_FPR_MASK) | EF_FRV_FPR_64; | |
284 | break; | |
285 | ||
286 | case OPTION_SOFT_FLOAT: | |
287 | frv_flags = (frv_flags & ~EF_FRV_FPR_MASK) | EF_FRV_FPR_NONE; | |
288 | break; | |
289 | ||
290 | case OPTION_DWORD_YES: | |
291 | frv_flags = (frv_flags & ~EF_FRV_DWORD_MASK) | EF_FRV_DWORD_YES; | |
292 | break; | |
293 | ||
294 | case OPTION_DWORD_NO: | |
295 | frv_flags = (frv_flags & ~EF_FRV_DWORD_MASK) | EF_FRV_DWORD_NO; | |
296 | break; | |
297 | ||
298 | case OPTION_DOUBLE: | |
299 | frv_flags |= EF_FRV_DOUBLE; | |
300 | break; | |
301 | ||
302 | case OPTION_NO_DOUBLE: | |
303 | frv_flags &= ~EF_FRV_DOUBLE; | |
304 | break; | |
305 | ||
306 | case OPTION_MEDIA: | |
307 | frv_flags |= EF_FRV_MEDIA; | |
308 | break; | |
309 | ||
310 | case OPTION_NO_MEDIA: | |
311 | frv_flags &= ~EF_FRV_MEDIA; | |
312 | break; | |
313 | ||
314 | case OPTION_MULADD: | |
315 | frv_flags |= EF_FRV_MULADD; | |
316 | break; | |
317 | ||
318 | case OPTION_NO_MULADD: | |
319 | frv_flags &= ~EF_FRV_MULADD; | |
320 | break; | |
321 | ||
322 | case OPTION_PACK: | |
323 | frv_flags &= ~EF_FRV_NOPACK; | |
324 | break; | |
325 | ||
326 | case OPTION_NO_PACK: | |
327 | frv_flags |= EF_FRV_NOPACK; | |
328 | break; | |
329 | ||
330 | case OPTION_CPU: | |
331 | { | |
332 | char *p; | |
333 | int cpu_flags = EF_FRV_CPU_GENERIC; | |
334 | ||
335 | /* Identify the processor type */ | |
336 | p = arg; | |
337 | if (strcmp (p, "frv") == 0) | |
338 | { | |
339 | cpu_flags = EF_FRV_CPU_GENERIC; | |
340 | frv_mach = bfd_mach_frv; | |
341 | } | |
342 | ||
343 | else if (strcmp (p, "fr500") == 0) | |
344 | { | |
345 | cpu_flags = EF_FRV_CPU_FR500; | |
346 | frv_mach = bfd_mach_fr500; | |
347 | } | |
348 | ||
1ae31fee DB |
349 | else if (strcmp (p, "fr550") == 0) |
350 | { | |
351 | cpu_flags = EF_FRV_CPU_FR550; | |
352 | frv_mach = bfd_mach_fr550; | |
353 | } | |
354 | ||
0ebb9a87 DB |
355 | else if (strcmp (p, "fr400") == 0) |
356 | { | |
357 | cpu_flags = EF_FRV_CPU_FR400; | |
358 | frv_mach = bfd_mach_fr400; | |
359 | } | |
360 | ||
361 | else if (strcmp (p, "fr300") == 0) | |
362 | { | |
363 | cpu_flags = EF_FRV_CPU_FR300; | |
364 | frv_mach = bfd_mach_fr300; | |
365 | } | |
366 | ||
367 | else if (strcmp (p, "simple") == 0) | |
368 | { | |
369 | cpu_flags = EF_FRV_CPU_SIMPLE; | |
370 | frv_mach = bfd_mach_frvsimple; | |
371 | frv_flags |= EF_FRV_NOPACK; | |
372 | } | |
373 | ||
374 | else if (strcmp (p, "tomcat") == 0) | |
375 | { | |
376 | cpu_flags = EF_FRV_CPU_TOMCAT; | |
377 | frv_mach = bfd_mach_frvtomcat; | |
378 | } | |
379 | ||
380 | else | |
381 | { | |
382 | as_fatal ("Unknown cpu -mcpu=%s", arg); | |
383 | return 0; | |
384 | } | |
385 | ||
386 | frv_flags = (frv_flags & ~EF_FRV_CPU_MASK) | cpu_flags; | |
387 | } | |
388 | break; | |
389 | ||
390 | case OPTION_PIC: | |
391 | frv_flags |= EF_FRV_PIC; | |
392 | frv_pic_p = 1; | |
393 | frv_pic_flag = "-fpic"; | |
394 | break; | |
395 | ||
396 | case OPTION_BIGPIC: | |
397 | frv_flags |= EF_FRV_BIGPIC; | |
398 | frv_pic_p = 1; | |
399 | frv_pic_flag = "-fPIC"; | |
400 | break; | |
401 | ||
402 | case OPTION_LIBPIC: | |
403 | frv_flags |= (EF_FRV_LIBPIC | EF_FRV_G0); | |
404 | frv_pic_p = 1; | |
405 | frv_pic_flag = "-mlibrary-pic"; | |
406 | g_switch_value = 0; | |
407 | break; | |
408 | ||
409 | case OPTION_TOMCAT_DEBUG: | |
410 | tomcat_debug = 1; | |
411 | break; | |
412 | ||
413 | case OPTION_TOMCAT_STATS: | |
414 | tomcat_stats = 1; | |
415 | break; | |
416 | } | |
417 | ||
418 | return 1; | |
419 | } | |
420 | ||
421 | void | |
422 | md_show_usage (stream) | |
423 | FILE * stream; | |
424 | { | |
425 | fprintf (stream, _("FRV specific command line options:\n")); | |
426 | fprintf (stream, _("-G n Data >= n bytes is in small data area\n")); | |
427 | fprintf (stream, _("-mgpr-32 Note 32 gprs are used\n")); | |
428 | fprintf (stream, _("-mgpr-64 Note 64 gprs are used\n")); | |
429 | fprintf (stream, _("-mfpr-32 Note 32 fprs are used\n")); | |
430 | fprintf (stream, _("-mfpr-64 Note 64 fprs are used\n")); | |
431 | fprintf (stream, _("-msoft-float Note software fp is used\n")); | |
432 | fprintf (stream, _("-mdword Note stack is aligned to a 8 byte boundary\n")); | |
433 | fprintf (stream, _("-mno-dword Note stack is aligned to a 4 byte boundary\n")); | |
434 | fprintf (stream, _("-mdouble Note fp double insns are used\n")); | |
435 | fprintf (stream, _("-mmedia Note media insns are used\n")); | |
436 | fprintf (stream, _("-mmuladd Note multiply add/subtract insns are used\n")); | |
437 | fprintf (stream, _("-mpack Note instructions are packed\n")); | |
438 | fprintf (stream, _("-mno-pack Do not allow instructions to be packed\n")); | |
439 | fprintf (stream, _("-mpic Note small position independent code\n")); | |
440 | fprintf (stream, _("-mPIC Note large position independent code\n")); | |
441 | fprintf (stream, _("-mlibrary-pic Compile library for large position indepedent code\n")); | |
1ae31fee | 442 | fprintf (stream, _("-mcpu={fr500|fr550|fr400|fr300|frv|simple|tomcat}\n")); |
0ebb9a87 DB |
443 | fprintf (stream, _(" Record the cpu type\n")); |
444 | fprintf (stream, _("-mtomcat-stats Print out stats for tomcat workarounds\n")); | |
445 | fprintf (stream, _("-mtomcat-debug Debug tomcat workarounds\n")); | |
446 | } | |
447 | ||
448 | \f | |
449 | void | |
450 | md_begin () | |
451 | { | |
452 | /* Initialize the `cgen' interface. */ | |
453 | ||
454 | /* Set the machine number and endian. */ | |
455 | gas_cgen_cpu_desc = frv_cgen_cpu_open (CGEN_CPU_OPEN_MACHS, 0, | |
456 | CGEN_CPU_OPEN_ENDIAN, | |
457 | CGEN_ENDIAN_BIG, | |
458 | CGEN_CPU_OPEN_END); | |
459 | frv_cgen_init_asm (gas_cgen_cpu_desc); | |
460 | ||
461 | /* This is a callback from cgen to gas to parse operands. */ | |
462 | cgen_set_parse_operand_fn (gas_cgen_cpu_desc, gas_cgen_parse_operand); | |
463 | ||
464 | /* Set the ELF flags if desired. */ | |
465 | if (frv_flags) | |
466 | bfd_set_private_flags (stdoutput, frv_flags); | |
467 | ||
468 | /* Set the machine type */ | |
469 | bfd_default_set_arch_mach (stdoutput, bfd_arch_frv, frv_mach); | |
470 | ||
471 | /* Set up gp size so we can put local common items in .sbss */ | |
472 | bfd_set_gp_size (stdoutput, g_switch_value); | |
473 | ||
474 | frv_vliw_reset (& vliw, frv_mach, frv_flags); | |
475 | } | |
476 | ||
477 | int chain_num = 0; | |
478 | ||
a08333bb AM |
479 | struct vliw_insn_list *frv_insert_vliw_insn PARAMS ((bfd_boolean)); |
480 | ||
0ebb9a87 DB |
481 | struct vliw_insn_list * |
482 | frv_insert_vliw_insn (count) | |
b34976b6 | 483 | bfd_boolean count; |
0ebb9a87 DB |
484 | { |
485 | struct vliw_insn_list *vliw_insn_list_entry; | |
486 | struct vliw_chain *vliw_chain_entry; | |
487 | ||
488 | if (current_vliw_chain == NULL) | |
489 | { | |
490 | vliw_chain_entry = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); | |
491 | vliw_chain_entry->insn_count = 0; | |
492 | vliw_chain_entry->insn_list = NULL; | |
493 | vliw_chain_entry->next = NULL; | |
494 | vliw_chain_entry->num = chain_num++; | |
495 | ||
496 | if (!vliw_chain_top) | |
497 | vliw_chain_top = vliw_chain_entry; | |
498 | current_vliw_chain = vliw_chain_entry; | |
499 | if (previous_vliw_chain) | |
500 | previous_vliw_chain->next = vliw_chain_entry; | |
501 | } | |
502 | ||
503 | vliw_insn_list_entry = (struct vliw_insn_list *) xmalloc (sizeof (struct vliw_insn_list)); | |
504 | vliw_insn_list_entry->type = VLIW_GENERIC_TYPE; | |
505 | vliw_insn_list_entry->insn = NULL; | |
506 | vliw_insn_list_entry->sym = NULL; | |
507 | vliw_insn_list_entry->snop_frag = NULL; | |
508 | vliw_insn_list_entry->dnop_frag = NULL; | |
509 | vliw_insn_list_entry->next = NULL; | |
510 | ||
511 | if (count) | |
512 | current_vliw_chain->insn_count++; | |
513 | ||
514 | if (current_vliw_insn) | |
515 | current_vliw_insn->next = vliw_insn_list_entry; | |
516 | current_vliw_insn = vliw_insn_list_entry; | |
517 | ||
518 | if (!current_vliw_chain->insn_list) | |
519 | current_vliw_chain->insn_list = current_vliw_insn; | |
520 | ||
521 | return vliw_insn_list_entry; | |
522 | } | |
523 | ||
524 | /* Identify the following cases: | |
525 | ||
526 | 1) A VLIW insn that contains both a branch and the branch destination. | |
527 | This requires the insertion of two vliw instructions before the | |
528 | branch. The first consists of two nops. The second consists of | |
529 | a single nop. | |
530 | ||
531 | 2) A single instruction VLIW insn which is the destination of a branch | |
532 | that is in the next VLIW insn. This requires the insertion of a vliw | |
533 | insn containing two nops before the branch. | |
534 | ||
535 | 3) A double instruction VLIW insn which contains the destination of a | |
536 | branch that is in the next VLIW insn. This requires the insertion of | |
537 | a VLIW insn containing a single nop before the branch. | |
538 | ||
539 | 4) A single instruction VLIW insn which contains branch destination (x), | |
540 | followed by a single instruction VLIW insn which does not contain | |
541 | the branch to (x), followed by a VLIW insn which does contain the branch | |
542 | to (x). This requires the insertion of a VLIW insn containing a single | |
543 | nop before the VLIW instruction containing the branch. | |
544 | ||
545 | */ | |
546 | #define FRV_IS_NOP(insn) (insn.buffer[0] == FRV_NOP_PACK || insn.buffer[0] == FRV_NOP_NOPACK) | |
547 | #define FRV_NOP_PACK 0x00880000 /* ori.p gr0,0,gr0 */ | |
548 | #define FRV_NOP_NOPACK 0x80880000 /* ori gr0,0,gr0 */ | |
549 | ||
550 | /* Check a vliw insn for an insn of type containing the sym passed in label_sym. */ | |
551 | ||
a08333bb AM |
552 | static struct vliw_insn_list *frv_find_in_vliw |
553 | PARAMS ((enum vliw_insn_type, struct vliw_chain *, symbolS *)); | |
554 | ||
0ebb9a87 DB |
555 | static struct vliw_insn_list * |
556 | frv_find_in_vliw (vliw_insn_type, this_chain, label_sym) | |
557 | enum vliw_insn_type vliw_insn_type; | |
558 | struct vliw_chain *this_chain; | |
559 | symbolS *label_sym; | |
560 | { | |
561 | ||
562 | struct vliw_insn_list *the_insn; | |
563 | ||
564 | if (!this_chain) | |
565 | return NULL; | |
566 | ||
567 | for (the_insn = this_chain->insn_list; the_insn; the_insn = the_insn->next) | |
568 | { | |
569 | if (the_insn->type == vliw_insn_type | |
570 | && the_insn->sym == label_sym) | |
571 | return the_insn; | |
572 | } | |
573 | ||
574 | return NULL; | |
575 | } | |
576 | ||
577 | enum vliw_nop_type | |
578 | { | |
579 | /* A Vliw insn containing a single nop insn. */ | |
580 | VLIW_SINGLE_NOP, | |
581 | ||
582 | /* A Vliw insn containing two nop insns. */ | |
583 | VLIW_DOUBLE_NOP, | |
584 | ||
585 | /* Two vliw insns. The first containing two nop insns. | |
586 | The second contain a single nop insn. */ | |
587 | VLIW_DOUBLE_THEN_SINGLE_NOP | |
588 | }; | |
589 | ||
a08333bb AM |
590 | static void frv_debug_tomcat PARAMS ((struct vliw_chain *)); |
591 | ||
0ebb9a87 DB |
592 | static void |
593 | frv_debug_tomcat (start_chain) | |
594 | struct vliw_chain *start_chain; | |
595 | { | |
596 | struct vliw_chain *this_chain; | |
597 | struct vliw_insn_list *this_insn; | |
598 | int i = 1; | |
599 | ||
600 | for (this_chain = start_chain; this_chain; this_chain = this_chain->next, i++) | |
601 | { | |
602 | fprintf (stderr, "\nVliw Insn #%d, #insns: %d\n", i, this_chain->insn_count); | |
603 | ||
604 | for (this_insn = this_chain->insn_list; this_insn; this_insn = this_insn->next) | |
605 | { | |
606 | if (this_insn->type == VLIW_LABEL_TYPE) | |
607 | fprintf (stderr, "Label Value: %d\n", (int) this_insn->sym); | |
608 | else if (this_insn->type == VLIW_BRANCH_TYPE) | |
609 | fprintf (stderr, "%s to %d\n", this_insn->insn->base->name, (int) this_insn->sym); | |
610 | else if (this_insn->type == VLIW_BRANCH_HAS_NOPS) | |
611 | fprintf (stderr, "nop'd %s to %d\n", this_insn->insn->base->name, (int) this_insn->sym); | |
612 | else if (this_insn->type == VLIW_NOP_TYPE) | |
613 | fprintf (stderr, "Nop\n"); | |
614 | else | |
615 | fprintf (stderr, " %s\n", this_insn->insn->base->name); | |
616 | } | |
617 | } | |
618 | } | |
619 | ||
a08333bb | 620 | static void frv_adjust_vliw_count PARAMS ((struct vliw_chain *)); |
0ebb9a87 DB |
621 | |
622 | static void | |
623 | frv_adjust_vliw_count (this_chain) | |
624 | struct vliw_chain *this_chain; | |
625 | { | |
626 | struct vliw_insn_list *this_insn; | |
627 | ||
628 | this_chain->insn_count = 0; | |
629 | ||
630 | for (this_insn = this_chain->insn_list; | |
631 | this_insn; | |
632 | this_insn = this_insn->next) | |
633 | { | |
634 | if (this_insn->type != VLIW_LABEL_TYPE) | |
635 | this_chain->insn_count++; | |
636 | } | |
637 | ||
638 | } | |
639 | ||
640 | /* Insert the desired nop combination in the vliw chain before insert_before_insn. | |
641 | Rechain the vliw insn. */ | |
642 | ||
a08333bb AM |
643 | static struct vliw_chain *frv_tomcat_shuffle |
644 | PARAMS ((enum vliw_nop_type, struct vliw_chain *, struct vliw_insn_list *)); | |
0ebb9a87 DB |
645 | |
646 | static struct vliw_chain * | |
647 | frv_tomcat_shuffle (this_nop_type, vliw_to_split, insert_before_insn) | |
648 | enum vliw_nop_type this_nop_type; | |
649 | struct vliw_chain *vliw_to_split; | |
650 | struct vliw_insn_list *insert_before_insn; | |
651 | { | |
652 | ||
b34976b6 | 653 | bfd_boolean pack_prev = FALSE; |
0ebb9a87 DB |
654 | struct vliw_chain *return_me = NULL; |
655 | struct vliw_insn_list *prev_insn = NULL; | |
656 | struct vliw_insn_list *curr_insn = vliw_to_split->insn_list; | |
657 | ||
658 | struct vliw_chain *double_nop = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); | |
659 | struct vliw_chain *single_nop = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); | |
660 | struct vliw_chain *second_part = (struct vliw_chain *) xmalloc (sizeof (struct vliw_chain)); | |
661 | struct vliw_chain *curr_vliw = vliw_chain_top; | |
662 | struct vliw_chain *prev_vliw = NULL; | |
663 | ||
664 | while (curr_insn && curr_insn != insert_before_insn) | |
665 | { | |
666 | /* We can't set the packing bit on a label. If we have the case | |
667 | label 1: | |
668 | label 2: | |
669 | label 3: | |
670 | branch that needs nops | |
671 | Then don't set pack bit later. */ | |
672 | ||
673 | if (curr_insn->type != VLIW_LABEL_TYPE) | |
b34976b6 | 674 | pack_prev = TRUE; |
0ebb9a87 DB |
675 | prev_insn = curr_insn; |
676 | curr_insn = curr_insn->next; | |
677 | } | |
678 | ||
679 | while (curr_vliw && curr_vliw != vliw_to_split) | |
680 | { | |
681 | prev_vliw = curr_vliw; | |
682 | curr_vliw = curr_vliw->next; | |
683 | } | |
684 | ||
685 | switch (this_nop_type) | |
686 | { | |
687 | case VLIW_SINGLE_NOP: | |
688 | if (!prev_insn) | |
689 | { | |
690 | /* Branch is first, Insert the NOP prior to this vliw insn. */ | |
691 | if (prev_vliw) | |
692 | prev_vliw->next = single_nop; | |
693 | else | |
694 | vliw_chain_top = single_nop; | |
695 | single_nop->next = vliw_to_split; | |
696 | vliw_to_split->insn_list->type = VLIW_BRANCH_HAS_NOPS; | |
697 | return_me = vliw_to_split; | |
698 | } | |
699 | else | |
700 | { | |
701 | /* Set the packing bit on the previous insn. */ | |
702 | if (pack_prev) | |
703 | { | |
704 | unsigned char *buffer = prev_insn->address; | |
705 | buffer[0] |= 0x80; | |
706 | } | |
707 | /* The branch is in the middle. Split this vliw insn into first | |
708 | and second parts. Insert the NOP inbetween. */ | |
709 | ||
710 | second_part->insn_list = insert_before_insn; | |
711 | second_part->insn_list->type = VLIW_BRANCH_HAS_NOPS; | |
712 | second_part->next = vliw_to_split->next; | |
713 | frv_adjust_vliw_count (second_part); | |
714 | ||
715 | single_nop->next = second_part; | |
716 | ||
717 | vliw_to_split->next = single_nop; | |
718 | prev_insn->next = NULL; | |
719 | ||
720 | return_me = second_part; | |
721 | frv_adjust_vliw_count (vliw_to_split); | |
722 | } | |
723 | break; | |
724 | ||
725 | case VLIW_DOUBLE_NOP: | |
726 | if (!prev_insn) | |
727 | { | |
728 | /* Branch is first, Insert the NOP prior to this vliw insn. */ | |
729 | if (prev_vliw) | |
730 | prev_vliw->next = double_nop; | |
731 | else | |
732 | vliw_chain_top = double_nop; | |
733 | ||
734 | double_nop->next = vliw_to_split; | |
735 | return_me = vliw_to_split; | |
736 | vliw_to_split->insn_list->type = VLIW_BRANCH_HAS_NOPS; | |
737 | } | |
738 | else | |
739 | { | |
740 | /* Set the packing bit on the previous insn. */ | |
741 | if (pack_prev) | |
742 | { | |
743 | unsigned char *buffer = prev_insn->address; | |
744 | buffer[0] |= 0x80; | |
745 | } | |
746 | ||
747 | /* The branch is in the middle. Split this vliw insn into first | |
748 | and second parts. Insert the NOP inbetween. */ | |
749 | second_part->insn_list = insert_before_insn; | |
750 | second_part->insn_list->type = VLIW_BRANCH_HAS_NOPS; | |
751 | second_part->next = vliw_to_split->next; | |
752 | frv_adjust_vliw_count (second_part); | |
753 | ||
754 | double_nop->next = second_part; | |
755 | ||
756 | vliw_to_split->next = single_nop; | |
757 | prev_insn->next = NULL; | |
758 | frv_adjust_vliw_count (vliw_to_split); | |
759 | ||
760 | return_me = second_part; | |
761 | } | |
762 | break; | |
763 | ||
764 | case VLIW_DOUBLE_THEN_SINGLE_NOP: | |
765 | double_nop->next = single_nop; | |
766 | double_nop->insn_count = 2; | |
767 | double_nop->insn_list = &double_nop_insn; | |
768 | single_nop->insn_count = 1; | |
769 | single_nop->insn_list = &single_nop_insn; | |
770 | ||
771 | if (!prev_insn) | |
772 | { | |
773 | /* The branch is the first insn in this vliw. Don't split the vliw. Insert | |
774 | the nops prior to this vliw. */ | |
775 | if (prev_vliw) | |
776 | prev_vliw->next = double_nop; | |
777 | else | |
778 | vliw_chain_top = double_nop; | |
779 | ||
780 | single_nop->next = vliw_to_split; | |
781 | return_me = vliw_to_split; | |
782 | vliw_to_split->insn_list->type = VLIW_BRANCH_HAS_NOPS; | |
783 | } | |
784 | else | |
785 | { | |
786 | /* Set the packing bit on the previous insn. */ | |
787 | if (pack_prev) | |
788 | { | |
789 | unsigned char *buffer = prev_insn->address; | |
790 | buffer[0] |= 0x80; | |
791 | } | |
792 | ||
793 | /* The branch is in the middle of this vliw insn. Split into first and | |
794 | second parts. Insert the nop vliws in between. */ | |
795 | second_part->insn_list = insert_before_insn; | |
796 | second_part->insn_list->type = VLIW_BRANCH_HAS_NOPS; | |
797 | second_part->next = vliw_to_split->next; | |
798 | frv_adjust_vliw_count (second_part); | |
799 | ||
800 | single_nop->next = second_part; | |
801 | ||
802 | vliw_to_split->next = double_nop; | |
803 | prev_insn->next = NULL; | |
804 | frv_adjust_vliw_count (vliw_to_split); | |
805 | ||
806 | return_me = second_part; | |
807 | } | |
808 | break; | |
809 | } | |
810 | ||
811 | return return_me; | |
812 | } | |
813 | ||
a08333bb AM |
814 | static void frv_tomcat_analyze_vliw_chains PARAMS ((void)); |
815 | ||
0ebb9a87 DB |
816 | static void |
817 | frv_tomcat_analyze_vliw_chains () | |
818 | { | |
819 | struct vliw_chain *vliw1 = NULL; | |
820 | struct vliw_chain *vliw2 = NULL; | |
821 | struct vliw_chain *vliw3 = NULL; | |
822 | ||
823 | struct vliw_insn_list *this_insn = NULL; | |
824 | struct vliw_insn_list *temp_insn = NULL; | |
825 | ||
826 | /* We potentially need to look at three VLIW insns to determine if the | |
827 | workaround is required. Set them up. Ignore existing nops during analysis. */ | |
828 | ||
829 | #define FRV_SET_VLIW_WINDOW(VLIW1, VLIW2, VLIW3) \ | |
830 | if (VLIW1 && VLIW1->next) \ | |
831 | VLIW2 = VLIW1->next; \ | |
832 | else \ | |
833 | VLIW2 = NULL; \ | |
834 | if (VLIW2 && VLIW2->next) \ | |
835 | VLIW3 = VLIW2->next; \ | |
836 | else \ | |
837 | VLIW3 = NULL | |
838 | ||
839 | vliw1 = vliw_chain_top; | |
840 | ||
841 | workaround_top: | |
842 | ||
843 | FRV_SET_VLIW_WINDOW (vliw1, vliw2, vliw3); | |
844 | ||
845 | if (!vliw1) | |
846 | return; | |
847 | ||
848 | if (vliw1->insn_count == 1) | |
849 | { | |
850 | /* check vliw1 for a label. */ | |
851 | if (vliw1->insn_list->type == VLIW_LABEL_TYPE) | |
852 | { | |
853 | temp_insn = frv_find_in_vliw (VLIW_BRANCH_TYPE, vliw2, vliw1->insn_list->sym); | |
854 | if (temp_insn) | |
855 | { | |
856 | vliw1 = frv_tomcat_shuffle (VLIW_DOUBLE_NOP, vliw2, vliw1->insn_list); | |
857 | temp_insn->dnop_frag->fr_subtype = NOP_KEEP; | |
858 | vliw1 = vliw1->next; | |
859 | if (tomcat_stats) | |
860 | tomcat_doubles++; | |
861 | goto workaround_top; | |
862 | } | |
863 | else if (vliw2 | |
864 | && vliw2->insn_count == 1 | |
865 | && (temp_insn = frv_find_in_vliw (VLIW_BRANCH_TYPE, vliw3, vliw1->insn_list->sym)) != NULL) | |
866 | { | |
867 | temp_insn->snop_frag->fr_subtype = NOP_KEEP; | |
868 | vliw1 = frv_tomcat_shuffle (VLIW_SINGLE_NOP, vliw3, vliw3->insn_list); | |
869 | if (tomcat_stats) | |
870 | tomcat_singles++; | |
871 | goto workaround_top; | |
872 | } | |
873 | } | |
874 | } | |
875 | ||
876 | if (vliw1->insn_count == 2) | |
877 | { | |
878 | struct vliw_insn_list *this_insn; | |
879 | ||
880 | /* check vliw1 for a label. */ | |
881 | for (this_insn = vliw1->insn_list; this_insn; this_insn = this_insn->next) | |
882 | { | |
883 | if (this_insn->type == VLIW_LABEL_TYPE) | |
884 | { | |
a08333bb | 885 | if ((temp_insn = frv_find_in_vliw (VLIW_BRANCH_TYPE, vliw2, this_insn->sym)) != NULL) |
0ebb9a87 DB |
886 | { |
887 | temp_insn->snop_frag->fr_subtype = NOP_KEEP; | |
888 | vliw1 = frv_tomcat_shuffle (VLIW_SINGLE_NOP, vliw2, this_insn); | |
889 | if (tomcat_stats) | |
890 | tomcat_singles++; | |
891 | } | |
892 | else | |
893 | vliw1 = vliw1->next; | |
894 | goto workaround_top; | |
895 | } | |
896 | } | |
897 | } | |
898 | /* Examine each insn in this VLIW. Look for the workaround criteria. */ | |
899 | for (this_insn = vliw1->insn_list; this_insn; this_insn = this_insn->next) | |
900 | { | |
901 | /* Don't look at labels or nops. */ | |
902 | while (this_insn | |
903 | && (this_insn->type == VLIW_LABEL_TYPE | |
904 | || this_insn->type == VLIW_NOP_TYPE | |
905 | || this_insn->type == VLIW_BRANCH_HAS_NOPS)) | |
906 | this_insn = this_insn->next; | |
907 | ||
908 | if (!this_insn) | |
909 | { | |
910 | vliw1 = vliw2; | |
911 | goto workaround_top; | |
912 | } | |
913 | ||
914 | if (frv_is_branch_insn (this_insn->insn)) | |
915 | { | |
a08333bb | 916 | if ((temp_insn = frv_find_in_vliw (VLIW_LABEL_TYPE, vliw1, this_insn->sym)) != NULL) |
0ebb9a87 DB |
917 | { |
918 | /* Insert [nop/nop] [nop] before branch. */ | |
919 | this_insn->snop_frag->fr_subtype = NOP_KEEP; | |
920 | this_insn->dnop_frag->fr_subtype = NOP_KEEP; | |
921 | vliw1 = frv_tomcat_shuffle (VLIW_DOUBLE_THEN_SINGLE_NOP, vliw1, this_insn); | |
922 | goto workaround_top; | |
923 | } | |
924 | } | |
925 | ||
926 | ||
927 | } | |
928 | /* This vliw insn checks out okay. Take a look at the next one. */ | |
929 | vliw1 = vliw1->next; | |
930 | goto workaround_top; | |
931 | } | |
932 | ||
933 | void | |
934 | frv_tomcat_workaround () | |
935 | { | |
936 | if (frv_mach != bfd_mach_frvtomcat) | |
937 | return; | |
938 | ||
939 | if (tomcat_debug) | |
940 | frv_debug_tomcat (vliw_chain_top); | |
941 | ||
942 | frv_tomcat_analyze_vliw_chains (); | |
943 | ||
944 | if (tomcat_stats) | |
945 | { | |
946 | fprintf (stderr, "Inserted %d Single Nops\n", tomcat_singles); | |
947 | fprintf (stderr, "Inserted %d Double Nops\n", tomcat_doubles); | |
948 | } | |
949 | } | |
950 | ||
1ae31fee DB |
951 | static int |
952 | fr550_check_insn_acc_range (frv_insn *insn, int low, int hi) | |
953 | { | |
954 | int acc; | |
955 | switch (CGEN_INSN_NUM (insn->insn)) | |
956 | { | |
957 | case FRV_INSN_MADDACCS: | |
958 | case FRV_INSN_MSUBACCS: | |
959 | case FRV_INSN_MDADDACCS: | |
960 | case FRV_INSN_MDSUBACCS: | |
961 | case FRV_INSN_MASACCS: | |
962 | case FRV_INSN_MDASACCS: | |
963 | acc = insn->fields.f_ACC40Si; | |
964 | if (acc < low || acc > hi) | |
965 | return 1; /* out of range */ | |
966 | acc = insn->fields.f_ACC40Sk; | |
967 | if (acc < low || acc > hi) | |
968 | return 1; /* out of range */ | |
969 | break; | |
970 | case FRV_INSN_MMULHS: | |
971 | case FRV_INSN_MMULHU: | |
972 | case FRV_INSN_MMULXHS: | |
973 | case FRV_INSN_MMULXHU: | |
974 | case FRV_INSN_CMMULHS: | |
975 | case FRV_INSN_CMMULHU: | |
976 | case FRV_INSN_MQMULHS: | |
977 | case FRV_INSN_MQMULHU: | |
978 | case FRV_INSN_MQMULXHS: | |
979 | case FRV_INSN_MQMULXHU: | |
980 | case FRV_INSN_CMQMULHS: | |
981 | case FRV_INSN_CMQMULHU: | |
982 | case FRV_INSN_MMACHS: | |
983 | case FRV_INSN_MMRDHS: | |
984 | case FRV_INSN_CMMACHS: | |
985 | case FRV_INSN_MQMACHS: | |
986 | case FRV_INSN_CMQMACHS: | |
987 | case FRV_INSN_MQXMACHS: | |
988 | case FRV_INSN_MQXMACXHS: | |
989 | case FRV_INSN_MQMACXHS: | |
990 | case FRV_INSN_MCPXRS: | |
991 | case FRV_INSN_MCPXIS: | |
992 | case FRV_INSN_CMCPXRS: | |
993 | case FRV_INSN_CMCPXIS: | |
994 | case FRV_INSN_MQCPXRS: | |
995 | case FRV_INSN_MQCPXIS: | |
996 | acc = insn->fields.f_ACC40Sk; | |
997 | if (acc < low || acc > hi) | |
998 | return 1; /* out of range */ | |
999 | break; | |
1000 | case FRV_INSN_MMACHU: | |
1001 | case FRV_INSN_MMRDHU: | |
1002 | case FRV_INSN_CMMACHU: | |
1003 | case FRV_INSN_MQMACHU: | |
1004 | case FRV_INSN_CMQMACHU: | |
1005 | case FRV_INSN_MCPXRU: | |
1006 | case FRV_INSN_MCPXIU: | |
1007 | case FRV_INSN_CMCPXRU: | |
1008 | case FRV_INSN_CMCPXIU: | |
1009 | case FRV_INSN_MQCPXRU: | |
1010 | case FRV_INSN_MQCPXIU: | |
1011 | acc = insn->fields.f_ACC40Uk; | |
1012 | if (acc < low || acc > hi) | |
1013 | return 1; /* out of range */ | |
1014 | break; | |
1015 | default: | |
1016 | break; | |
1017 | } | |
1018 | return 0; /* all is ok */ | |
1019 | } | |
1020 | ||
1021 | static int | |
1022 | fr550_check_acc_range (FRV_VLIW *vliw, frv_insn *insn) | |
1023 | { | |
1024 | switch ((*vliw->current_vliw)[vliw->next_slot - 1]) | |
1025 | { | |
1026 | case UNIT_FM0: | |
1027 | case UNIT_FM2: | |
1028 | return fr550_check_insn_acc_range (insn, 0, 3); | |
1029 | case UNIT_FM1: | |
1030 | case UNIT_FM3: | |
1031 | return fr550_check_insn_acc_range (insn, 4, 7); | |
1032 | default: | |
1033 | break; | |
1034 | } | |
1035 | return 0; /* all is ok */ | |
1036 | } | |
1037 | ||
0ebb9a87 DB |
1038 | void |
1039 | md_assemble (str) | |
1040 | char * str; | |
1041 | { | |
1042 | frv_insn insn; | |
1043 | char *errmsg; | |
1044 | int packing_constraint; | |
1045 | finished_insnS finished_insn; | |
1046 | fragS *double_nop_frag = NULL; | |
1047 | fragS *single_nop_frag = NULL; | |
1048 | struct vliw_insn_list *vliw_insn_list_entry = NULL; | |
1049 | ||
1050 | /* Initialize GAS's cgen interface for a new instruction. */ | |
1051 | gas_cgen_init_parse (); | |
1052 | ||
1053 | insn.insn = frv_cgen_assemble_insn | |
1054 | (gas_cgen_cpu_desc, str, & insn.fields, insn.buffer, &errmsg); | |
1055 | ||
1056 | if (!insn.insn) | |
1057 | { | |
1058 | as_bad (errmsg); | |
1059 | return; | |
1060 | } | |
1061 | ||
1062 | /* If the cpu is tomcat, then we need to insert nops to workaround | |
1063 | hardware limitations. We need to keep track of each vliw unit | |
1064 | and examine the length of the unit and the individual insns | |
1065 | within the unit to determine the number and location of the | |
1066 | required nops. */ | |
1067 | if (frv_mach == bfd_mach_frvtomcat) | |
1068 | { | |
1069 | /* If we've just finished a VLIW insn OR this is a branch, | |
1070 | then start up a new frag. Fill it with nops. We will get rid | |
1071 | of those that are not required after we've seen all of the | |
1072 | instructions but before we start resolving fixups. */ | |
1073 | if ( !FRV_IS_NOP (insn) | |
1074 | && (frv_is_branch_insn (insn.insn) || insn.fields.f_pack)) | |
1075 | { | |
1076 | char *buffer; | |
1077 | ||
1078 | frag_wane (frag_now); | |
1079 | frag_new (0); | |
1080 | double_nop_frag = frag_now; | |
1081 | buffer = frag_var (rs_machine_dependent, 8, 8, NOP_DELETE, NULL, 0, 0); | |
1082 | md_number_to_chars (buffer, FRV_NOP_PACK, 4); | |
1083 | md_number_to_chars (buffer+4, FRV_NOP_NOPACK, 4); | |
1084 | ||
1085 | frag_wane (frag_now); | |
1086 | frag_new (0); | |
1087 | single_nop_frag = frag_now; | |
1088 | buffer = frag_var (rs_machine_dependent, 4, 4, NOP_DELETE, NULL, 0, 0); | |
1089 | md_number_to_chars (buffer, FRV_NOP_NOPACK, 4); | |
1090 | } | |
1091 | ||
1092 | vliw_insn_list_entry = frv_insert_vliw_insn (DO_COUNT); | |
1093 | vliw_insn_list_entry->insn = insn.insn; | |
1094 | if (frv_is_branch_insn (insn.insn)) | |
1095 | vliw_insn_list_entry->type = VLIW_BRANCH_TYPE; | |
1096 | ||
1097 | if ( !FRV_IS_NOP (insn) | |
1098 | && (frv_is_branch_insn (insn.insn) || insn.fields.f_pack)) | |
1099 | { | |
1100 | vliw_insn_list_entry->snop_frag = single_nop_frag; | |
1101 | vliw_insn_list_entry->dnop_frag = double_nop_frag; | |
1102 | } | |
1103 | } | |
1104 | ||
1105 | /* Make sure that this insn does not violate the VLIW packing constraints. */ | |
1106 | /* -mno-pack disallows any packing whatsoever. */ | |
1107 | if (frv_flags & EF_FRV_NOPACK) | |
1108 | { | |
1109 | if (! insn.fields.f_pack) | |
1110 | { | |
1111 | as_bad (_("VLIW packing used for -mno-pack")); | |
1112 | return; | |
1113 | } | |
1114 | } | |
1115 | /* -mcpu=FRV is an idealized FR-V implementation that supports all of the | |
1116 | instructions, don't do vliw checking. */ | |
1117 | else if (frv_mach != bfd_mach_frv) | |
1118 | { | |
1119 | packing_constraint = frv_vliw_add_insn (& vliw, insn.insn); | |
1ae31fee DB |
1120 | if (frv_mach == bfd_mach_fr550 && ! packing_constraint) |
1121 | packing_constraint = fr550_check_acc_range (& vliw, & insn); | |
0ebb9a87 DB |
1122 | if (insn.fields.f_pack) |
1123 | frv_vliw_reset (& vliw, frv_mach, frv_flags); | |
1124 | if (packing_constraint) | |
1125 | { | |
1126 | as_bad (_("VLIW packing constraint violation")); | |
1127 | return; | |
1128 | } | |
1129 | } | |
1130 | ||
1131 | /* Doesn't really matter what we pass for RELAX_P here. */ | |
1132 | gas_cgen_finish_insn (insn.insn, insn.buffer, | |
1133 | CGEN_FIELDS_BITSIZE (& insn.fields), 1, &finished_insn); | |
1134 | ||
1135 | ||
1136 | /* If the cpu is tomcat, then we need to insert nops to workaround | |
1137 | hardware limitations. We need to keep track of each vliw unit | |
1138 | and examine the length of the unit and the individual insns | |
1139 | within the unit to determine the number and location of the | |
1140 | required nops. */ | |
1141 | if (frv_mach == bfd_mach_frvtomcat) | |
1142 | { | |
1143 | if (vliw_insn_list_entry) | |
1144 | vliw_insn_list_entry->address = finished_insn.addr; | |
1145 | else | |
1146 | abort(); | |
1147 | ||
1148 | if (insn.fields.f_pack) | |
1149 | { | |
1150 | /* We've completed a VLIW insn. */ | |
1151 | previous_vliw_chain = current_vliw_chain; | |
1152 | current_vliw_chain = NULL; | |
1153 | current_vliw_insn = NULL; | |
1154 | } | |
1155 | } | |
1156 | } | |
1157 | ||
1158 | /* The syntax in the manual says constants begin with '#'. | |
1159 | We just ignore it. */ | |
1160 | ||
1161 | void | |
1162 | md_operand (expressionP) | |
1163 | expressionS * expressionP; | |
1164 | { | |
1165 | if (* input_line_pointer == '#') | |
1166 | { | |
1167 | input_line_pointer ++; | |
1168 | expression (expressionP); | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | valueT | |
1173 | md_section_align (segment, size) | |
1174 | segT segment; | |
1175 | valueT size; | |
1176 | { | |
1177 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1178 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1179 | } | |
1180 | ||
1181 | symbolS * | |
1182 | md_undefined_symbol (name) | |
1183 | char * name ATTRIBUTE_UNUSED; | |
1184 | { | |
1185 | return 0; | |
1186 | } | |
1187 | \f | |
1188 | /* Interface to relax_segment. */ | |
1189 | ||
1190 | /* FIXME: Build table by hand, get it working, then machine generate. */ | |
1191 | const relax_typeS md_relax_table[] = | |
1192 | { | |
1193 | {1, 1, 0, 0}, | |
1194 | {511 - 2 - 2, -512 - 2 + 2, 0, 2 }, | |
1195 | {0x2000000 - 1 - 2, -0x2000000 - 2, 2, 0 }, | |
1196 | {0x2000000 - 1 - 2, -0x2000000 - 2, 4, 0 } | |
1197 | }; | |
1198 | ||
1199 | long | |
1200 | frv_relax_frag (fragP, stretch) | |
1201 | fragS *fragP ATTRIBUTE_UNUSED; | |
1202 | long stretch ATTRIBUTE_UNUSED; | |
1203 | { | |
1204 | return 0; | |
1205 | } | |
1206 | ||
1207 | /* Return an initial guess of the length by which a fragment must grow to | |
1208 | hold a branch to reach its destination. | |
1209 | Also updates fr_type/fr_subtype as necessary. | |
1210 | ||
1211 | Called just before doing relaxation. | |
1212 | Any symbol that is now undefined will not become defined. | |
1213 | The guess for fr_var is ACTUALLY the growth beyond fr_fix. | |
1214 | Whatever we do to grow fr_fix or fr_var contributes to our returned value. | |
1215 | Although it may not be explicit in the frag, pretend fr_var starts with a | |
1216 | 0 value. */ | |
1217 | ||
1218 | int | |
1219 | md_estimate_size_before_relax (fragP, segment) | |
1220 | fragS * fragP; | |
1221 | segT segment ATTRIBUTE_UNUSED; | |
1222 | { | |
1223 | switch (fragP->fr_subtype) | |
1224 | { | |
1225 | case NOP_KEEP: | |
1226 | return fragP->fr_var; | |
1227 | ||
1228 | default: | |
1229 | case NOP_DELETE: | |
1230 | return 0; | |
1231 | } | |
1232 | } | |
1233 | ||
1234 | /* *fragP has been relaxed to its final size, and now needs to have | |
1235 | the bytes inside it modified to conform to the new size. | |
1236 | ||
1237 | Called after relaxation is finished. | |
1238 | fragP->fr_type == rs_machine_dependent. | |
1239 | fragP->fr_subtype is the subtype of what the address relaxed to. */ | |
1240 | ||
1241 | void | |
1242 | md_convert_frag (abfd, sec, fragP) | |
1243 | bfd * abfd ATTRIBUTE_UNUSED; | |
1244 | segT sec ATTRIBUTE_UNUSED; | |
1245 | fragS * fragP; | |
1246 | { | |
1247 | switch (fragP->fr_subtype) | |
1248 | { | |
1249 | default: | |
1250 | case NOP_DELETE: | |
1251 | return; | |
1252 | ||
1253 | case NOP_KEEP: | |
1254 | fragP->fr_fix = fragP->fr_var; | |
1255 | fragP->fr_var = 0; | |
1256 | return; | |
1257 | } | |
1258 | } | |
1259 | \f | |
1260 | /* Functions concerning relocs. */ | |
1261 | ||
1262 | /* The location from which a PC relative jump should be calculated, | |
1263 | given a PC relative reloc. */ | |
1264 | ||
1265 | long | |
1266 | md_pcrel_from_section (fixP, sec) | |
1267 | fixS * fixP; | |
a939d090 | 1268 | segT sec; |
0ebb9a87 | 1269 | { |
a939d090 AO |
1270 | if (TC_FORCE_RELOCATION (fixP) |
1271 | || (fixP->fx_addsy != (symbolS *) NULL | |
1272 | && S_GET_SEGMENT (fixP->fx_addsy) != sec)) | |
1273 | { | |
1274 | /* If we can't adjust this relocation, or if it references a | |
1275 | local symbol in a different section (which | |
1276 | TC_FORCE_RELOCATION can't check), let the linker figure it | |
1277 | out. */ | |
1278 | return 0; | |
1279 | } | |
0ebb9a87 DB |
1280 | |
1281 | return (fixP->fx_frag->fr_address + fixP->fx_where) & ~1; | |
1282 | } | |
1283 | ||
1284 | /* Return the bfd reloc type for OPERAND of INSN at fixup FIXP. | |
1285 | Returns BFD_RELOC_NONE if no reloc type can be found. | |
1286 | *FIXP may be modified if desired. */ | |
1287 | ||
1288 | bfd_reloc_code_real_type | |
1289 | md_cgen_lookup_reloc (insn, operand, fixP) | |
1290 | const CGEN_INSN * insn ATTRIBUTE_UNUSED; | |
1291 | const CGEN_OPERAND * operand; | |
1292 | fixS * fixP; | |
1293 | { | |
1294 | switch (operand->type) | |
1295 | { | |
1296 | case FRV_OPERAND_LABEL16: | |
b34976b6 | 1297 | fixP->fx_pcrel = TRUE; |
0ebb9a87 DB |
1298 | return BFD_RELOC_FRV_LABEL16; |
1299 | ||
1300 | case FRV_OPERAND_LABEL24: | |
b34976b6 | 1301 | fixP->fx_pcrel = TRUE; |
0ebb9a87 DB |
1302 | return BFD_RELOC_FRV_LABEL24; |
1303 | ||
1304 | case FRV_OPERAND_UHI16: | |
1305 | case FRV_OPERAND_ULO16: | |
1306 | case FRV_OPERAND_SLO16: | |
1307 | ||
1308 | /* The relocation type should be recorded in opinfo */ | |
1309 | if (fixP->fx_cgen.opinfo != 0) | |
1310 | return fixP->fx_cgen.opinfo; | |
1311 | break; | |
1312 | ||
1313 | case FRV_OPERAND_D12: | |
1314 | case FRV_OPERAND_S12: | |
1315 | return BFD_RELOC_FRV_GPREL12; | |
1316 | ||
1317 | case FRV_OPERAND_U12: | |
1318 | return BFD_RELOC_FRV_GPRELU12; | |
1319 | ||
1320 | default: | |
1321 | break; | |
1322 | } | |
1323 | return BFD_RELOC_NONE; | |
1324 | } | |
1325 | ||
1326 | ||
1327 | /* See whether we need to force a relocation into the output file. | |
1328 | This is used to force out switch and PC relative relocations when | |
1329 | relaxing. */ | |
1330 | ||
1331 | int | |
1332 | frv_force_relocation (fix) | |
1333 | fixS * fix; | |
1334 | { | |
ae6063d4 | 1335 | if (fix->fx_r_type == BFD_RELOC_FRV_GPREL12 |
0ebb9a87 DB |
1336 | || fix->fx_r_type == BFD_RELOC_FRV_GPRELU12) |
1337 | return 1; | |
1338 | ||
ae6063d4 | 1339 | return generic_force_reloc (fix); |
0ebb9a87 DB |
1340 | } |
1341 | \f | |
1342 | /* Write a value out to the object file, using the appropriate endianness. */ | |
1343 | ||
1344 | void | |
1345 | frv_md_number_to_chars (buf, val, n) | |
1346 | char * buf; | |
1347 | valueT val; | |
1348 | int n; | |
1349 | { | |
1350 | number_to_chars_bigendian (buf, val, n); | |
1351 | } | |
1352 | ||
1353 | /* Turn a string in input_line_pointer into a floating point constant of type | |
1354 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1355 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
1356 | */ | |
1357 | ||
1358 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1359 | #define MAX_LITTLENUMS 6 | |
1360 | ||
1361 | char * | |
1362 | md_atof (type, litP, sizeP) | |
1363 | char type; | |
1364 | char * litP; | |
1365 | int * sizeP; | |
1366 | { | |
1367 | int i; | |
1368 | int prec; | |
1369 | LITTLENUM_TYPE words [MAX_LITTLENUMS]; | |
1370 | char * t; | |
0ebb9a87 DB |
1371 | |
1372 | switch (type) | |
1373 | { | |
1374 | case 'f': | |
1375 | case 'F': | |
1376 | case 's': | |
1377 | case 'S': | |
1378 | prec = 2; | |
1379 | break; | |
1380 | ||
1381 | case 'd': | |
1382 | case 'D': | |
1383 | case 'r': | |
1384 | case 'R': | |
1385 | prec = 4; | |
1386 | break; | |
1387 | ||
1388 | /* FIXME: Some targets allow other format chars for bigger sizes here. */ | |
1389 | ||
1390 | default: | |
1391 | * sizeP = 0; | |
1392 | return _("Bad call to md_atof()"); | |
1393 | } | |
1394 | ||
1395 | t = atof_ieee (input_line_pointer, type, words); | |
1396 | if (t) | |
1397 | input_line_pointer = t; | |
1398 | * sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1399 | ||
1400 | for (i = 0; i < prec; i++) | |
1401 | { | |
1402 | md_number_to_chars (litP, (valueT) words[i], | |
1403 | sizeof (LITTLENUM_TYPE)); | |
1404 | litP += sizeof (LITTLENUM_TYPE); | |
1405 | } | |
1406 | ||
1407 | return 0; | |
1408 | } | |
1409 | ||
b34976b6 | 1410 | bfd_boolean |
0ebb9a87 DB |
1411 | frv_fix_adjustable (fixP) |
1412 | fixS * fixP; | |
1413 | { | |
1414 | bfd_reloc_code_real_type reloc_type; | |
1415 | ||
1416 | if ((int) fixP->fx_r_type >= (int) BFD_RELOC_UNUSED) | |
1417 | { | |
1418 | const CGEN_INSN *insn = NULL; | |
1419 | int opindex = (int) fixP->fx_r_type - (int) BFD_RELOC_UNUSED; | |
1420 | const CGEN_OPERAND *operand = cgen_operand_lookup_by_num(gas_cgen_cpu_desc, opindex); | |
1421 | reloc_type = md_cgen_lookup_reloc (insn, operand, fixP); | |
1422 | } | |
1423 | else | |
1424 | reloc_type = fixP->fx_r_type; | |
1425 | ||
0ebb9a87 DB |
1426 | /* We need the symbol name for the VTABLE entries */ |
1427 | if ( reloc_type == BFD_RELOC_VTABLE_INHERIT | |
1428 | || reloc_type == BFD_RELOC_VTABLE_ENTRY | |
1429 | || reloc_type == BFD_RELOC_FRV_GPREL12 | |
1430 | || reloc_type == BFD_RELOC_FRV_GPRELU12) | |
1431 | return 0; | |
1432 | ||
1433 | return 1; | |
1434 | } | |
1435 | ||
1436 | /* Allow user to set flags bits. */ | |
1437 | void | |
1438 | frv_set_flags (arg) | |
1439 | int arg ATTRIBUTE_UNUSED; | |
1440 | { | |
1441 | flagword new_flags = get_absolute_expression (); | |
1442 | flagword new_mask = ~ (flagword)0; | |
1443 | ||
1444 | frv_user_set_flags_p = 1; | |
1445 | if (*input_line_pointer == ',') | |
1446 | { | |
1447 | ++input_line_pointer; | |
1448 | new_mask = get_absolute_expression (); | |
1449 | } | |
1450 | ||
1451 | frv_flags = (frv_flags & ~new_mask) | (new_flags & new_mask); | |
1452 | bfd_set_private_flags (stdoutput, frv_flags); | |
1453 | } | |
1454 | ||
1455 | /* Frv specific function to handle 4 byte initializations for pointers that are | |
1456 | considered 'safe' for use with pic support. Until frv_frob_file{,_section} | |
1457 | is run, we encode it a BFD_RELOC_CTOR, and it is turned back into a normal | |
1458 | BFD_RELOC_32 at that time. */ | |
1459 | ||
1460 | void | |
1461 | frv_pic_ptr (nbytes) | |
1462 | int nbytes; | |
1463 | { | |
1464 | expressionS exp; | |
1465 | char *p; | |
1466 | ||
1467 | if (nbytes != 4) | |
1468 | abort (); | |
1469 | ||
1470 | #ifdef md_flush_pending_output | |
1471 | md_flush_pending_output (); | |
1472 | #endif | |
1473 | ||
1474 | if (is_it_end_of_statement ()) | |
1475 | { | |
1476 | demand_empty_rest_of_line (); | |
1477 | return; | |
1478 | } | |
1479 | ||
1480 | #ifdef md_cons_align | |
1481 | md_cons_align (nbytes); | |
1482 | #endif | |
1483 | ||
1484 | do | |
1485 | { | |
1486 | expression (&exp); | |
1487 | ||
1488 | p = frag_more (4); | |
1489 | memset (p, 0, 4); | |
1490 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, &exp, 0, | |
1491 | BFD_RELOC_CTOR); | |
1492 | } | |
1493 | while (*input_line_pointer++ == ','); | |
1494 | ||
1495 | input_line_pointer--; /* Put terminator back into stream. */ | |
1496 | demand_empty_rest_of_line (); | |
1497 | } | |
1498 | ||
1499 | \f | |
1500 | ||
1501 | #ifdef DEBUG | |
1502 | #define DPRINTF1(A) fprintf (stderr, A) | |
1503 | #define DPRINTF2(A,B) fprintf (stderr, A, B) | |
1504 | #define DPRINTF3(A,B,C) fprintf (stderr, A, B, C) | |
1505 | ||
1506 | #else | |
1507 | #define DPRINTF1(A) | |
1508 | #define DPRINTF2(A,B) | |
1509 | #define DPRINTF3(A,B,C) | |
1510 | #endif | |
1511 | ||
1512 | /* Go through a the sections looking for relocations that are problematical for | |
1513 | pic. If not pic, just note that this object can't be linked with pic. If | |
1514 | it is pic, see if it needs to be marked so that it will be fixed up, or if | |
1515 | not possible, issue an error. */ | |
1516 | ||
1517 | static void | |
1518 | frv_frob_file_section (abfd, sec, ptr) | |
1519 | bfd *abfd; | |
1520 | asection *sec; | |
1521 | PTR ptr ATTRIBUTE_UNUSED; | |
1522 | { | |
1523 | segment_info_type *seginfo = seg_info (sec); | |
1524 | fixS *fixp; | |
1525 | CGEN_CPU_DESC cd = gas_cgen_cpu_desc; | |
1526 | flagword flags = bfd_get_section_flags (abfd, sec); | |
1527 | ||
1528 | /* Skip relocations in known sections (.ctors, .dtors, and .gcc_except_table) | |
1529 | since we can fix those up by hand. */ | |
1530 | int known_section_p = (sec->name | |
1531 | && sec->name[0] == '.' | |
1532 | && ((sec->name[1] == 'c' | |
1533 | && strcmp (sec->name, ".ctor") == 0) | |
1534 | || (sec->name[1] == 'd' | |
1535 | && strcmp (sec->name, ".dtor") == 0) | |
1536 | || (sec->name[1] == 'g' | |
1537 | && strcmp (sec->name, ".gcc_except_table") == 0))); | |
1538 | ||
1539 | DPRINTF3 ("\nFrv section %s%s\n", sec->name, (known_section_p) ? ", known section" : ""); | |
1540 | if ((flags & SEC_ALLOC) == 0) | |
1541 | { | |
1542 | DPRINTF1 ("\tSkipping non-loaded section\n"); | |
1543 | return; | |
1544 | } | |
1545 | ||
1546 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
1547 | { | |
1548 | symbolS *s = fixp->fx_addsy; | |
1549 | bfd_reloc_code_real_type reloc; | |
1550 | int non_pic_p; | |
1551 | int opindex; | |
1552 | const CGEN_OPERAND *operand; | |
1553 | const CGEN_INSN *insn = fixp->fx_cgen.insn; | |
1554 | ||
1555 | if (fixp->fx_done) | |
1556 | { | |
1557 | DPRINTF1 ("\tSkipping reloc that has already been done\n"); | |
1558 | continue; | |
1559 | } | |
1560 | ||
1561 | if (fixp->fx_pcrel) | |
1562 | { | |
1563 | DPRINTF1 ("\tSkipping reloc that is PC relative\n"); | |
1564 | continue; | |
1565 | } | |
1566 | ||
1567 | if (! s) | |
1568 | { | |
1569 | DPRINTF1 ("\tSkipping reloc without symbol\n"); | |
1570 | continue; | |
1571 | } | |
1572 | ||
1573 | if (fixp->fx_r_type < BFD_RELOC_UNUSED) | |
1574 | { | |
1575 | opindex = -1; | |
1576 | reloc = fixp->fx_r_type; | |
1577 | } | |
1578 | else | |
1579 | { | |
1580 | opindex = (int) fixp->fx_r_type - (int) BFD_RELOC_UNUSED; | |
1581 | operand = cgen_operand_lookup_by_num (cd, opindex); | |
1582 | reloc = md_cgen_lookup_reloc (insn, operand, fixp); | |
1583 | } | |
1584 | ||
1585 | DPRINTF3 ("\treloc %s\t%s", bfd_get_reloc_code_name (reloc), S_GET_NAME (s)); | |
1586 | ||
1587 | non_pic_p = 0; | |
1588 | switch (reloc) | |
1589 | { | |
1590 | default: | |
1591 | break; | |
1592 | ||
1593 | case BFD_RELOC_32: | |
1594 | /* Skip relocations in known sections (.ctors, .dtors, and | |
1595 | .gcc_except_table) since we can fix those up by hand. Also | |
1596 | skip forward references to constants. Also skip a difference | |
1597 | of two symbols, which still uses the BFD_RELOC_32 at this | |
1598 | point. */ | |
1599 | if (! known_section_p | |
1600 | && S_GET_SEGMENT (s) != absolute_section | |
1601 | && !fixp->fx_subsy | |
1602 | && (flags & (SEC_READONLY | SEC_CODE)) == 0) | |
1603 | { | |
1604 | non_pic_p = 1; | |
1605 | } | |
1606 | break; | |
1607 | ||
1608 | /* FIXME -- should determine if any of the GP relocation really uses | |
1609 | gr16 (which is not pic safe) or not. Right now, assume if we | |
1610 | aren't being compiled with -mpic, the usage is non pic safe, but | |
1611 | is safe with -mpic. */ | |
1612 | case BFD_RELOC_FRV_GPREL12: | |
1613 | case BFD_RELOC_FRV_GPRELU12: | |
1614 | case BFD_RELOC_FRV_GPREL32: | |
1615 | case BFD_RELOC_FRV_GPRELHI: | |
1616 | case BFD_RELOC_FRV_GPRELLO: | |
1617 | non_pic_p = ! frv_pic_p; | |
1618 | break; | |
1619 | ||
1620 | case BFD_RELOC_FRV_LO16: | |
1621 | case BFD_RELOC_FRV_HI16: | |
1622 | if (S_GET_SEGMENT (s) != absolute_section) | |
1623 | non_pic_p = 1; | |
1624 | break; | |
1625 | ||
1626 | case BFD_RELOC_VTABLE_INHERIT: | |
1627 | case BFD_RELOC_VTABLE_ENTRY: | |
1628 | non_pic_p = 1; | |
1629 | break; | |
1630 | ||
1631 | /* If this is a blessed BFD_RELOC_32, convert it back to the normal | |
1632 | relocation. */ | |
1633 | case BFD_RELOC_CTOR: | |
1634 | fixp->fx_r_type = BFD_RELOC_32; | |
1635 | break; | |
1636 | } | |
1637 | ||
1638 | if (non_pic_p) | |
1639 | { | |
1640 | DPRINTF1 (" (Non-pic relocation)\n"); | |
1641 | if (frv_pic_p) | |
1642 | as_warn_where (fixp->fx_file, fixp->fx_line, | |
1643 | _("Relocation %s is not safe for %s"), | |
1644 | bfd_get_reloc_code_name (reloc), frv_pic_flag); | |
1645 | ||
1646 | else if ((frv_flags & EF_FRV_NON_PIC_RELOCS) == 0) | |
1647 | { | |
1648 | frv_flags |= EF_FRV_NON_PIC_RELOCS; | |
1649 | bfd_set_private_flags (abfd, frv_flags); | |
1650 | } | |
1651 | } | |
1652 | #ifdef DEBUG | |
1653 | else | |
1654 | DPRINTF1 ("\n"); | |
1655 | #endif | |
1656 | } | |
1657 | } | |
1658 | ||
1659 | /* After all of the symbols have been adjusted, go over the file looking | |
1660 | for any relocations that pic won't support. */ | |
1661 | ||
1662 | void | |
1663 | frv_frob_file () | |
1664 | { | |
1665 | bfd_map_over_sections (stdoutput, frv_frob_file_section, (PTR)0); | |
1666 | } | |
1667 | ||
1668 | void | |
1669 | frv_frob_label (this_label) | |
1670 | symbolS *this_label; | |
1671 | { | |
1672 | struct vliw_insn_list *vliw_insn_list_entry; | |
1673 | ||
1674 | if (frv_mach != bfd_mach_frvtomcat) | |
1675 | return; | |
1676 | ||
1677 | if (now_seg != text_section) | |
1678 | return; | |
1679 | ||
1680 | vliw_insn_list_entry = frv_insert_vliw_insn(DONT_COUNT); | |
1681 | vliw_insn_list_entry->type = VLIW_LABEL_TYPE; | |
1682 | vliw_insn_list_entry->sym = this_label; | |
1683 | } | |
1684 | ||
1685 | fixS * | |
1686 | frv_cgen_record_fixup_exp (frag, where, insn, length, operand, opinfo, exp) | |
1687 | fragS * frag; | |
1688 | int where; | |
1689 | const CGEN_INSN * insn; | |
1690 | int length; | |
1691 | const CGEN_OPERAND * operand; | |
1692 | int opinfo; | |
1693 | expressionS * exp; | |
1694 | { | |
1695 | fixS * fixP = gas_cgen_record_fixup_exp (frag, where, insn, length, | |
1696 | operand, opinfo, exp); | |
1697 | ||
1698 | if (frv_mach == bfd_mach_frvtomcat | |
1699 | && current_vliw_insn | |
1700 | && current_vliw_insn->type == VLIW_BRANCH_TYPE | |
1701 | && exp != NULL) | |
1702 | current_vliw_insn->sym = exp->X_add_symbol; | |
1703 | ||
1704 | return fixP; | |
1705 | } |