Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | /* tc-alpha.c - Processor-specific code for the DEC Alpha AXP CPU. |
2 | Copyright (C) 1989, 93-98, 1999 Free Software Foundation, Inc. | |
3 | Contributed by Carnegie Mellon University, 1993. | |
4 | Written by Alessandro Forin, based on earlier gas-1.38 target CPU files. | |
5 | Modified by Ken Raeburn for gas-2.x and ECOFF support. | |
6 | Modified by Richard Henderson for ELF support. | |
9de8d8f1 | 7 | Modified by Klaus K"ampf for EVAX (OpenVMS/Alpha) support. |
252b5132 RH |
8 | |
9 | This file is part of GAS, the GNU Assembler. | |
10 | ||
11 | GAS is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2, or (at your option) | |
14 | any later version. | |
15 | ||
16 | GAS is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with GAS; see the file COPYING. If not, write to the Free | |
23 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
24 | 02111-1307, USA. */ | |
25 | ||
26 | /* | |
27 | * Mach Operating System | |
28 | * Copyright (c) 1993 Carnegie Mellon University | |
29 | * All Rights Reserved. | |
30 | * | |
31 | * Permission to use, copy, modify and distribute this software and its | |
32 | * documentation is hereby granted, provided that both the copyright | |
33 | * notice and this permission notice appear in all copies of the | |
34 | * software, derivative works or modified versions, and any portions | |
35 | * thereof, and that both notices appear in supporting documentation. | |
36 | * | |
37 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS | |
38 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
39 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
40 | * | |
41 | * Carnegie Mellon requests users of this software to return to | |
42 | * | |
43 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
44 | * School of Computer Science | |
45 | * Carnegie Mellon University | |
46 | * Pittsburgh PA 15213-3890 | |
47 | * | |
48 | * any improvements or extensions that they make and grant Carnegie the | |
49 | * rights to redistribute these changes. | |
50 | */ | |
51 | ||
52 | #include "as.h" | |
53 | #include "subsegs.h" | |
54 | #include "ecoff.h" | |
55 | ||
56 | #include "opcode/alpha.h" | |
57 | ||
58 | #ifdef OBJ_ELF | |
59 | #include "elf/alpha.h" | |
60 | #endif | |
61 | ||
62 | #include <ctype.h> | |
63 | ||
64 | \f | |
65 | /* Local types */ | |
66 | ||
67 | #define MAX_INSN_FIXUPS 2 | |
68 | #define MAX_INSN_ARGS 5 | |
69 | ||
70 | struct alpha_fixup | |
71 | { | |
72 | expressionS exp; | |
73 | bfd_reloc_code_real_type reloc; | |
74 | }; | |
75 | ||
76 | struct alpha_insn | |
77 | { | |
78 | unsigned insn; | |
79 | int nfixups; | |
80 | struct alpha_fixup fixups[MAX_INSN_FIXUPS]; | |
81 | }; | |
82 | ||
83 | enum alpha_macro_arg | |
84 | { | |
85 | MACRO_EOA = 1, MACRO_IR, MACRO_PIR, MACRO_CPIR, MACRO_FPR, MACRO_EXP | |
86 | }; | |
87 | ||
88 | struct alpha_macro | |
89 | { | |
90 | const char *name; | |
91 | void (*emit) PARAMS ((const expressionS *, int, const PTR)); | |
92 | const PTR arg; | |
93 | enum alpha_macro_arg argsets[16]; | |
94 | }; | |
95 | ||
96 | /* Two extra symbols we want to see in our input. This is a blatent | |
97 | misuse of the expressionS.X_op field. */ | |
98 | ||
99 | #define O_pregister (O_max+1) /* O_register, but in parentheses */ | |
100 | #define O_cpregister (O_pregister+1) /* + a leading comma */ | |
101 | ||
102 | /* Macros for extracting the type and number of encoded register tokens */ | |
103 | ||
104 | #define is_ir_num(x) (((x) & 32) == 0) | |
105 | #define is_fpr_num(x) (((x) & 32) != 0) | |
106 | #define regno(x) ((x) & 31) | |
107 | ||
108 | /* Something odd inherited from the old assembler */ | |
109 | ||
110 | #define note_gpreg(R) (alpha_gprmask |= (1 << (R))) | |
111 | #define note_fpreg(R) (alpha_fprmask |= (1 << (R))) | |
112 | ||
113 | /* Predicates for 16- and 32-bit ranges */ | |
114 | /* XXX: The non-shift version appears to trigger a compiler bug when | |
115 | cross-assembling from x86 w/ gcc 2.7.2. */ | |
116 | ||
117 | #if 1 | |
118 | #define range_signed_16(x) \ | |
119 | (((offsetT)(x) >> 15) == 0 || ((offsetT)(x) >> 15) == -1) | |
120 | #define range_signed_32(x) \ | |
121 | (((offsetT)(x) >> 31) == 0 || ((offsetT)(x) >> 31) == -1) | |
122 | #else | |
123 | #define range_signed_16(x) ((offsetT)(x) >= -(offsetT)0x8000 && \ | |
124 | (offsetT)(x) <= (offsetT)0x7FFF) | |
125 | #define range_signed_32(x) ((offsetT)(x) >= -(offsetT)0x80000000 && \ | |
126 | (offsetT)(x) <= (offsetT)0x7FFFFFFF) | |
127 | #endif | |
128 | ||
129 | /* Macros for sign extending from 16- and 32-bits. */ | |
130 | /* XXX: The cast macros will work on all the systems that I care about, | |
131 | but really a predicate should be found to use the non-cast forms. */ | |
132 | ||
133 | #if 1 | |
134 | #define sign_extend_16(x) ((short)(x)) | |
135 | #define sign_extend_32(x) ((int)(x)) | |
136 | #else | |
137 | #define sign_extend_16(x) ((offsetT)(((x) & 0xFFFF) ^ 0x8000) - 0x8000) | |
138 | #define sign_extend_32(x) ((offsetT)(((x) & 0xFFFFFFFF) \ | |
139 | ^ 0x80000000) - 0x80000000) | |
140 | #endif | |
141 | ||
142 | /* Macros to build tokens */ | |
143 | ||
144 | #define set_tok_reg(t, r) (memset(&(t), 0, sizeof(t)), \ | |
145 | (t).X_op = O_register, \ | |
146 | (t).X_add_number = (r)) | |
147 | #define set_tok_preg(t, r) (memset(&(t), 0, sizeof(t)), \ | |
148 | (t).X_op = O_pregister, \ | |
149 | (t).X_add_number = (r)) | |
150 | #define set_tok_cpreg(t, r) (memset(&(t), 0, sizeof(t)), \ | |
151 | (t).X_op = O_cpregister, \ | |
152 | (t).X_add_number = (r)) | |
153 | #define set_tok_freg(t, r) (memset(&(t), 0, sizeof(t)), \ | |
154 | (t).X_op = O_register, \ | |
155 | (t).X_add_number = (r)+32) | |
156 | #define set_tok_sym(t, s, a) (memset(&(t), 0, sizeof(t)), \ | |
157 | (t).X_op = O_symbol, \ | |
158 | (t).X_add_symbol = (s), \ | |
159 | (t).X_add_number = (a)) | |
160 | #define set_tok_const(t, n) (memset(&(t), 0, sizeof(t)), \ | |
161 | (t).X_op = O_constant, \ | |
162 | (t).X_add_number = (n)) | |
163 | ||
164 | \f | |
165 | /* Prototypes for all local functions */ | |
166 | ||
167 | static int tokenize_arguments PARAMS ((char *, expressionS *, int)); | |
168 | static const struct alpha_opcode *find_opcode_match | |
169 | PARAMS ((const struct alpha_opcode *, const expressionS *, int *, int *)); | |
170 | static const struct alpha_macro *find_macro_match | |
171 | PARAMS ((const struct alpha_macro *, const expressionS *, int *)); | |
172 | static unsigned insert_operand | |
173 | PARAMS ((unsigned, const struct alpha_operand *, offsetT, char *, unsigned)); | |
174 | static void assemble_insn | |
175 | PARAMS ((const struct alpha_opcode *, const expressionS *, int, | |
176 | struct alpha_insn *)); | |
177 | static void emit_insn PARAMS ((struct alpha_insn *)); | |
178 | static void assemble_tokens_to_insn | |
179 | PARAMS ((const char *, const expressionS *, int, struct alpha_insn *)); | |
180 | static void assemble_tokens | |
181 | PARAMS ((const char *, const expressionS *, int, int)); | |
182 | ||
183 | static int load_expression | |
184 | PARAMS ((int, const expressionS *, int *, expressionS *)); | |
185 | ||
186 | static void emit_ldgp PARAMS ((const expressionS *, int, const PTR)); | |
187 | static void emit_division PARAMS ((const expressionS *, int, const PTR)); | |
188 | static void emit_lda PARAMS ((const expressionS *, int, const PTR)); | |
189 | static void emit_ldah PARAMS ((const expressionS *, int, const PTR)); | |
190 | static void emit_ir_load PARAMS ((const expressionS *, int, const PTR)); | |
191 | static void emit_loadstore PARAMS ((const expressionS *, int, const PTR)); | |
192 | static void emit_jsrjmp PARAMS ((const expressionS *, int, const PTR)); | |
193 | static void emit_ldX PARAMS ((const expressionS *, int, const PTR)); | |
194 | static void emit_ldXu PARAMS ((const expressionS *, int, const PTR)); | |
195 | static void emit_uldX PARAMS ((const expressionS *, int, const PTR)); | |
196 | static void emit_uldXu PARAMS ((const expressionS *, int, const PTR)); | |
197 | static void emit_ldil PARAMS ((const expressionS *, int, const PTR)); | |
198 | static void emit_stX PARAMS ((const expressionS *, int, const PTR)); | |
199 | static void emit_ustX PARAMS ((const expressionS *, int, const PTR)); | |
200 | static void emit_sextX PARAMS ((const expressionS *, int, const PTR)); | |
201 | static void emit_retjcr PARAMS ((const expressionS *, int, const PTR)); | |
202 | ||
203 | static void s_alpha_text PARAMS ((int)); | |
204 | static void s_alpha_data PARAMS ((int)); | |
205 | #ifndef OBJ_ELF | |
206 | static void s_alpha_comm PARAMS ((int)); | |
207 | static void s_alpha_rdata PARAMS ((int)); | |
208 | #endif | |
209 | #ifdef OBJ_ECOFF | |
210 | static void s_alpha_sdata PARAMS ((int)); | |
211 | #endif | |
212 | #ifdef OBJ_ELF | |
213 | static void s_alpha_section PARAMS ((int)); | |
214 | static void s_alpha_ent PARAMS ((int)); | |
215 | static void s_alpha_end PARAMS ((int)); | |
216 | static void s_alpha_mask PARAMS ((int)); | |
217 | static void s_alpha_frame PARAMS ((int)); | |
218 | static void s_alpha_prologue PARAMS ((int)); | |
219 | static void s_alpha_coff_wrapper PARAMS ((int)); | |
220 | #endif | |
221 | #ifdef OBJ_EVAX | |
222 | static void s_alpha_section PARAMS ((int)); | |
223 | #endif | |
224 | static void s_alpha_gprel32 PARAMS ((int)); | |
225 | static void s_alpha_float_cons PARAMS ((int)); | |
226 | static void s_alpha_proc PARAMS ((int)); | |
227 | static void s_alpha_set PARAMS ((int)); | |
228 | static void s_alpha_base PARAMS ((int)); | |
229 | static void s_alpha_align PARAMS ((int)); | |
230 | static void s_alpha_stringer PARAMS ((int)); | |
231 | static void s_alpha_space PARAMS ((int)); | |
232 | ||
233 | static void create_literal_section PARAMS ((const char *, segT *, symbolS **)); | |
234 | #ifndef OBJ_ELF | |
235 | static void select_gp_value PARAMS ((void)); | |
236 | #endif | |
237 | static void alpha_align PARAMS ((int, char *, symbolS *, int)); | |
238 | ||
239 | \f | |
240 | /* Generic assembler global variables which must be defined by all | |
241 | targets. */ | |
242 | ||
243 | /* Characters which always start a comment. */ | |
244 | const char comment_chars[] = "#"; | |
245 | ||
246 | /* Characters which start a comment at the beginning of a line. */ | |
247 | const char line_comment_chars[] = "#"; | |
248 | ||
249 | /* Characters which may be used to separate multiple commands on a | |
250 | single line. */ | |
251 | const char line_separator_chars[] = ";"; | |
252 | ||
253 | /* Characters which are used to indicate an exponent in a floating | |
254 | point number. */ | |
255 | const char EXP_CHARS[] = "eE"; | |
256 | ||
257 | /* Characters which mean that a number is a floating point constant, | |
258 | as in 0d1.0. */ | |
259 | #if 0 | |
260 | const char FLT_CHARS[] = "dD"; | |
261 | #else | |
262 | /* XXX: Do all of these really get used on the alpha?? */ | |
263 | char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
264 | #endif | |
265 | ||
266 | #ifdef OBJ_EVAX | |
267 | const char *md_shortopts = "Fm:g+1h:HG:"; | |
268 | #else | |
269 | const char *md_shortopts = "Fm:gG:"; | |
270 | #endif | |
271 | ||
272 | struct option md_longopts[] = { | |
273 | #define OPTION_32ADDR (OPTION_MD_BASE) | |
274 | { "32addr", no_argument, NULL, OPTION_32ADDR }, | |
275 | #define OPTION_RELAX (OPTION_32ADDR+1) | |
276 | { "relax", no_argument, NULL, OPTION_RELAX }, | |
277 | #ifdef OBJ_ELF | |
278 | #define OPTION_MDEBUG (OPTION_RELAX+1) | |
279 | #define OPTION_NO_MDEBUG (OPTION_MDEBUG+1) | |
280 | { "mdebug", no_argument, NULL, OPTION_MDEBUG }, | |
281 | { "no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG }, | |
282 | #endif | |
283 | { NULL, no_argument, NULL, 0 } | |
284 | }; | |
285 | ||
286 | size_t md_longopts_size = sizeof(md_longopts); | |
287 | ||
288 | \f | |
289 | #ifdef OBJ_EVAX | |
290 | #define AXP_REG_R0 0 | |
291 | #define AXP_REG_R16 16 | |
292 | #define AXP_REG_R17 17 | |
293 | #undef AXP_REG_T9 | |
294 | #define AXP_REG_T9 22 | |
295 | #undef AXP_REG_T10 | |
296 | #define AXP_REG_T10 23 | |
297 | #undef AXP_REG_T11 | |
298 | #define AXP_REG_T11 24 | |
299 | #undef AXP_REG_T12 | |
300 | #define AXP_REG_T12 25 | |
301 | #define AXP_REG_AI 25 | |
302 | #undef AXP_REG_FP | |
303 | #define AXP_REG_FP 29 | |
304 | ||
305 | #undef AXP_REG_GP | |
306 | #define AXP_REG_GP AXP_REG_PV | |
307 | #endif /* OBJ_EVAX */ | |
308 | ||
309 | /* The cpu for which we are generating code */ | |
310 | static unsigned alpha_target = AXP_OPCODE_BASE; | |
311 | static const char *alpha_target_name = "<all>"; | |
312 | ||
313 | /* The hash table of instruction opcodes */ | |
314 | static struct hash_control *alpha_opcode_hash; | |
315 | ||
316 | /* The hash table of macro opcodes */ | |
317 | static struct hash_control *alpha_macro_hash; | |
318 | ||
319 | #ifdef OBJ_ECOFF | |
320 | /* The $gp relocation symbol */ | |
321 | static symbolS *alpha_gp_symbol; | |
322 | ||
323 | /* XXX: what is this, and why is it exported? */ | |
324 | valueT alpha_gp_value; | |
325 | #endif | |
326 | ||
327 | /* The current $gp register */ | |
328 | static int alpha_gp_register = AXP_REG_GP; | |
329 | ||
330 | /* A table of the register symbols */ | |
331 | static symbolS *alpha_register_table[64]; | |
332 | ||
333 | /* Constant sections, or sections of constants */ | |
334 | #ifdef OBJ_ECOFF | |
335 | static segT alpha_lita_section; | |
336 | static segT alpha_lit4_section; | |
337 | #endif | |
338 | #ifdef OBJ_EVAX | |
339 | static segT alpha_link_section; | |
340 | static segT alpha_ctors_section; | |
341 | static segT alpha_dtors_section; | |
342 | #endif | |
343 | static segT alpha_lit8_section; | |
344 | ||
345 | /* Symbols referring to said sections. */ | |
346 | #ifdef OBJ_ECOFF | |
347 | static symbolS *alpha_lita_symbol; | |
348 | static symbolS *alpha_lit4_symbol; | |
349 | #endif | |
350 | #ifdef OBJ_EVAX | |
351 | static symbolS *alpha_link_symbol; | |
352 | static symbolS *alpha_ctors_symbol; | |
353 | static symbolS *alpha_dtors_symbol; | |
354 | #endif | |
355 | static symbolS *alpha_lit8_symbol; | |
356 | ||
357 | /* Literal for .litX+0x8000 within .lita */ | |
358 | #ifdef OBJ_ECOFF | |
359 | static offsetT alpha_lit4_literal; | |
360 | static offsetT alpha_lit8_literal; | |
361 | #endif | |
362 | ||
363 | /* The active .ent symbol. */ | |
364 | #ifdef OBJ_ELF | |
365 | static symbolS *alpha_cur_ent_sym; | |
366 | #endif | |
367 | ||
368 | /* Is the assembler not allowed to use $at? */ | |
369 | static int alpha_noat_on = 0; | |
370 | ||
371 | /* Are macros enabled? */ | |
372 | static int alpha_macros_on = 1; | |
373 | ||
374 | /* Are floats disabled? */ | |
375 | static int alpha_nofloats_on = 0; | |
376 | ||
377 | /* Are addresses 32 bit? */ | |
378 | static int alpha_addr32_on = 0; | |
379 | ||
380 | /* Symbol labelling the current insn. When the Alpha gas sees | |
381 | foo: | |
382 | .quad 0 | |
383 | and the section happens to not be on an eight byte boundary, it | |
384 | will align both the symbol and the .quad to an eight byte boundary. */ | |
385 | static symbolS *alpha_insn_label; | |
386 | ||
387 | /* Whether we should automatically align data generation pseudo-ops. | |
388 | .align 0 will turn this off. */ | |
389 | static int alpha_auto_align_on = 1; | |
390 | ||
391 | /* The known current alignment of the current section. */ | |
392 | static int alpha_current_align; | |
393 | ||
394 | /* These are exported to ECOFF code. */ | |
395 | unsigned long alpha_gprmask, alpha_fprmask; | |
396 | ||
397 | /* Whether the debugging option was seen. */ | |
398 | static int alpha_debug; | |
399 | ||
400 | #ifdef OBJ_ELF | |
401 | /* Whether we are emitting an mdebug section. */ | |
402 | int alpha_flag_mdebug = 1; | |
403 | #endif | |
404 | ||
405 | /* Don't fully resolve relocations, allowing code movement in the linker. */ | |
406 | static int alpha_flag_relax; | |
407 | ||
408 | /* What value to give to bfd_set_gp_size. */ | |
409 | static int g_switch_value = 8; | |
410 | ||
411 | #ifdef OBJ_EVAX | |
412 | /* Collect information about current procedure here. */ | |
413 | static struct { | |
414 | symbolS *symbol; /* proc pdesc symbol */ | |
415 | int pdsckind; | |
416 | int framereg; /* register for frame pointer */ | |
417 | int framesize; /* size of frame */ | |
418 | int rsa_offset; | |
419 | int ra_save; | |
420 | int fp_save; | |
421 | long imask; | |
422 | long fmask; | |
423 | int type; | |
424 | int prologue; | |
425 | } alpha_evax_proc; | |
426 | ||
427 | static int alpha_flag_hash_long_names = 0; /* -+ */ | |
428 | static int alpha_flag_show_after_trunc = 0; /* -H */ | |
429 | ||
430 | /* If the -+ switch is given, then a hash is appended to any name that is | |
431 | * longer than 64 characters, else longer symbol names are truncated. | |
432 | */ | |
433 | ||
434 | #endif | |
435 | \f | |
436 | /* A table of CPU names and opcode sets. */ | |
437 | ||
438 | static const struct cpu_type | |
439 | { | |
440 | const char *name; | |
441 | unsigned flags; | |
442 | } cpu_types[] = | |
443 | { | |
444 | /* Ad hoc convention: cpu number gets palcode, process code doesn't. | |
445 | This supports usage under DU 4.0b that does ".arch ev4", and | |
446 | usage in MILO that does -m21064. Probably something more | |
447 | specific like -m21064-pal should be used, but oh well. */ | |
448 | ||
449 | { "21064", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
450 | { "21064a", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
451 | { "21066", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
452 | { "21068", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
453 | { "21164", AXP_OPCODE_BASE|AXP_OPCODE_EV5 }, | |
454 | { "21164a", AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX }, | |
455 | { "21164pc", (AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX | |
456 | |AXP_OPCODE_MAX) }, | |
457 | { "21264", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX | |
458 | |AXP_OPCODE_MAX|AXP_OPCODE_CIX) }, | |
459 | ||
460 | { "ev4", AXP_OPCODE_BASE }, | |
461 | { "ev45", AXP_OPCODE_BASE }, | |
462 | { "lca45", AXP_OPCODE_BASE }, | |
463 | { "ev5", AXP_OPCODE_BASE }, | |
464 | { "ev56", AXP_OPCODE_BASE|AXP_OPCODE_BWX }, | |
465 | { "pca56", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX }, | |
466 | { "ev6", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX }, | |
467 | ||
468 | { "all", AXP_OPCODE_BASE }, | |
469 | { 0 } | |
470 | }; | |
471 | ||
472 | /* The macro table */ | |
473 | ||
474 | static const struct alpha_macro alpha_macros[] = { | |
475 | /* Load/Store macros */ | |
476 | { "lda", emit_lda, NULL, | |
477 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
478 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
479 | { "ldah", emit_ldah, NULL, | |
480 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
481 | ||
482 | { "ldl", emit_ir_load, "ldl", | |
483 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
484 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
485 | { "ldl_l", emit_ir_load, "ldl_l", | |
486 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
487 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
488 | { "ldq", emit_ir_load, "ldq", | |
489 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
490 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
491 | { "ldq_l", emit_ir_load, "ldq_l", | |
492 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
493 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
494 | { "ldq_u", emit_ir_load, "ldq_u", | |
495 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
496 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
497 | { "ldf", emit_loadstore, "ldf", | |
498 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
499 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
500 | { "ldg", emit_loadstore, "ldg", | |
501 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
502 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
503 | { "lds", emit_loadstore, "lds", | |
504 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
505 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
506 | { "ldt", emit_loadstore, "ldt", | |
507 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
508 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
509 | ||
510 | { "ldb", emit_ldX, (PTR)0, | |
511 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
512 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
513 | { "ldbu", emit_ldXu, (PTR)0, | |
514 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
515 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
516 | { "ldw", emit_ldX, (PTR)1, | |
517 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
518 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
519 | { "ldwu", emit_ldXu, (PTR)1, | |
520 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
521 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
522 | ||
523 | { "uldw", emit_uldX, (PTR)1, | |
524 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
525 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
526 | { "uldwu", emit_uldXu, (PTR)1, | |
527 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
528 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
529 | { "uldl", emit_uldX, (PTR)2, | |
530 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
531 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
532 | { "uldlu", emit_uldXu, (PTR)2, | |
533 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
534 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
535 | { "uldq", emit_uldXu, (PTR)3, | |
536 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
537 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
538 | ||
539 | { "ldgp", emit_ldgp, NULL, | |
540 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA } }, | |
541 | ||
542 | { "ldi", emit_lda, NULL, | |
543 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
544 | { "ldil", emit_ldil, NULL, | |
545 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
546 | { "ldiq", emit_lda, NULL, | |
547 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
548 | #if 0 | |
549 | { "ldif" emit_ldiq, NULL, | |
550 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
551 | { "ldid" emit_ldiq, NULL, | |
552 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
553 | { "ldig" emit_ldiq, NULL, | |
554 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
555 | { "ldis" emit_ldiq, NULL, | |
556 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
557 | { "ldit" emit_ldiq, NULL, | |
558 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
559 | #endif | |
560 | ||
561 | { "stl", emit_loadstore, "stl", | |
562 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
563 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
564 | { "stl_c", emit_loadstore, "stl_c", | |
565 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
566 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
567 | { "stq", emit_loadstore, "stq", | |
568 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
569 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
570 | { "stq_c", emit_loadstore, "stq_c", | |
571 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
572 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
573 | { "stq_u", emit_loadstore, "stq_u", | |
574 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
575 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
576 | { "stf", emit_loadstore, "stf", | |
577 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
578 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
579 | { "stg", emit_loadstore, "stg", | |
580 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
581 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
582 | { "sts", emit_loadstore, "sts", | |
583 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
584 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
585 | { "stt", emit_loadstore, "stt", | |
586 | { MACRO_FPR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
587 | MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
588 | ||
589 | { "stb", emit_stX, (PTR)0, | |
590 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
591 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
592 | { "stw", emit_stX, (PTR)1, | |
593 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
594 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
595 | { "ustw", emit_ustX, (PTR)1, | |
596 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
597 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
598 | { "ustl", emit_ustX, (PTR)2, | |
599 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
600 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
601 | { "ustq", emit_ustX, (PTR)3, | |
602 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA, | |
603 | MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
604 | ||
605 | /* Arithmetic macros */ | |
606 | #if 0 | |
607 | { "absl" emit_absl, 1, { IR } }, | |
608 | { "absl" emit_absl, 2, { IR, IR } }, | |
609 | { "absl" emit_absl, 2, { EXP, IR } }, | |
610 | { "absq" emit_absq, 1, { IR } }, | |
611 | { "absq" emit_absq, 2, { IR, IR } }, | |
612 | { "absq" emit_absq, 2, { EXP, IR } }, | |
613 | #endif | |
614 | ||
615 | { "sextb", emit_sextX, (PTR)0, | |
616 | { MACRO_IR, MACRO_IR, MACRO_EOA, | |
617 | MACRO_IR, MACRO_EOA, | |
618 | /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } }, | |
619 | { "sextw", emit_sextX, (PTR)1, | |
620 | { MACRO_IR, MACRO_IR, MACRO_EOA, | |
621 | MACRO_IR, MACRO_EOA, | |
622 | /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } }, | |
623 | ||
624 | { "divl", emit_division, "__divl", | |
625 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
626 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
627 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
628 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
629 | { "divlu", emit_division, "__divlu", | |
630 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
631 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
632 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
633 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
634 | { "divq", emit_division, "__divq", | |
635 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
636 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
637 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
638 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
639 | { "divqu", emit_division, "__divqu", | |
640 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
641 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
642 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
643 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
644 | { "reml", emit_division, "__reml", | |
645 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
646 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
647 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
648 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
649 | { "remlu", emit_division, "__remlu", | |
650 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
651 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
652 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
653 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
654 | { "remq", emit_division, "__remq", | |
655 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
656 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
657 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
658 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
659 | { "remqu", emit_division, "__remqu", | |
660 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
661 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
662 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
663 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
664 | ||
665 | { "jsr", emit_jsrjmp, "jsr", | |
666 | { MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
667 | MACRO_PIR, MACRO_EOA, | |
668 | MACRO_IR, MACRO_EXP, MACRO_EOA, | |
669 | MACRO_EXP, MACRO_EOA } }, | |
670 | { "jmp", emit_jsrjmp, "jmp", | |
671 | { MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
672 | MACRO_PIR, MACRO_EOA, | |
673 | MACRO_IR, MACRO_EXP, MACRO_EOA, | |
674 | MACRO_EXP, MACRO_EOA } }, | |
675 | { "ret", emit_retjcr, "ret", | |
676 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
677 | MACRO_IR, MACRO_EOA, | |
678 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
679 | MACRO_PIR, MACRO_EOA, | |
680 | MACRO_EXP, MACRO_EOA, | |
681 | MACRO_EOA } }, | |
682 | { "jcr", emit_retjcr, "jcr", | |
683 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
684 | MACRO_IR, MACRO_EOA, | |
685 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
686 | MACRO_PIR, MACRO_EOA, | |
687 | MACRO_EXP, MACRO_EOA, | |
688 | MACRO_EOA } }, | |
689 | { "jsr_coroutine", emit_retjcr, "jcr", | |
690 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
691 | MACRO_IR, MACRO_EOA, | |
692 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
693 | MACRO_PIR, MACRO_EOA, | |
694 | MACRO_EXP, MACRO_EOA, | |
695 | MACRO_EOA } }, | |
696 | }; | |
697 | ||
698 | static const int alpha_num_macros | |
699 | = sizeof(alpha_macros) / sizeof(*alpha_macros); | |
700 | \f | |
701 | /* Public interface functions */ | |
702 | ||
703 | /* This function is called once, at assembler startup time. It sets | |
704 | up all the tables, etc. that the MD part of the assembler will | |
705 | need, that can be determined before arguments are parsed. */ | |
706 | ||
707 | void | |
708 | md_begin () | |
709 | { | |
710 | unsigned int i; | |
711 | ||
712 | /* Create the opcode hash table */ | |
713 | ||
714 | alpha_opcode_hash = hash_new (); | |
715 | for (i = 0; i < alpha_num_opcodes; ) | |
716 | { | |
717 | const char *name, *retval, *slash; | |
718 | ||
719 | name = alpha_opcodes[i].name; | |
720 | retval = hash_insert (alpha_opcode_hash, name, (PTR)&alpha_opcodes[i]); | |
721 | if (retval) | |
722 | as_fatal (_("internal error: can't hash opcode `%s': %s"), name, retval); | |
723 | ||
724 | /* Some opcodes include modifiers of various sorts with a "/mod" | |
725 | syntax, like the architecture manual suggests. However, for | |
726 | use with gcc at least, we also need access to those same opcodes | |
727 | without the "/". */ | |
728 | ||
729 | if ((slash = strchr (name, '/')) != NULL) | |
730 | { | |
731 | char *p = xmalloc (strlen (name)); | |
732 | memcpy (p, name, slash - name); | |
733 | strcpy (p + (slash - name), slash + 1); | |
734 | ||
735 | (void)hash_insert(alpha_opcode_hash, p, (PTR)&alpha_opcodes[i]); | |
736 | /* Ignore failures -- the opcode table does duplicate some | |
737 | variants in different forms, like "hw_stq" and "hw_st/q". */ | |
738 | } | |
739 | ||
740 | while (++i < alpha_num_opcodes | |
741 | && (alpha_opcodes[i].name == name | |
742 | || !strcmp (alpha_opcodes[i].name, name))) | |
743 | continue; | |
744 | } | |
745 | ||
746 | /* Create the macro hash table */ | |
747 | ||
748 | alpha_macro_hash = hash_new (); | |
749 | for (i = 0; i < alpha_num_macros; ) | |
750 | { | |
751 | const char *name, *retval; | |
752 | ||
753 | name = alpha_macros[i].name; | |
754 | retval = hash_insert (alpha_macro_hash, name, (PTR)&alpha_macros[i]); | |
755 | if (retval) | |
756 | as_fatal (_("internal error: can't hash macro `%s': %s"), name, retval); | |
757 | ||
758 | while (++i < alpha_num_macros | |
759 | && (alpha_macros[i].name == name | |
760 | || !strcmp (alpha_macros[i].name, name))) | |
761 | continue; | |
762 | } | |
763 | ||
764 | /* Construct symbols for each of the registers */ | |
765 | ||
766 | for (i = 0; i < 32; ++i) | |
767 | { | |
768 | char name[4]; | |
769 | sprintf(name, "$%d", i); | |
770 | alpha_register_table[i] = symbol_create(name, reg_section, i, | |
771 | &zero_address_frag); | |
772 | } | |
773 | for (; i < 64; ++i) | |
774 | { | |
775 | char name[5]; | |
776 | sprintf(name, "$f%d", i-32); | |
777 | alpha_register_table[i] = symbol_create(name, reg_section, i, | |
778 | &zero_address_frag); | |
779 | } | |
780 | ||
781 | /* Create the special symbols and sections we'll be using */ | |
782 | ||
783 | /* So .sbss will get used for tiny objects. */ | |
784 | bfd_set_gp_size (stdoutput, g_switch_value); | |
785 | ||
786 | #ifdef OBJ_ECOFF | |
787 | create_literal_section (".lita", &alpha_lita_section, &alpha_lita_symbol); | |
788 | ||
789 | /* For handling the GP, create a symbol that won't be output in the | |
790 | symbol table. We'll edit it out of relocs later. */ | |
791 | alpha_gp_symbol = symbol_create ("<GP value>", alpha_lita_section, 0x8000, | |
792 | &zero_address_frag); | |
793 | #endif | |
794 | ||
795 | #ifdef OBJ_EVAX | |
796 | create_literal_section (".link", &alpha_link_section, &alpha_link_symbol); | |
797 | #endif | |
798 | ||
799 | #ifdef OBJ_ELF | |
800 | if (ECOFF_DEBUGGING) | |
801 | { | |
802 | segT sec = subseg_new(".mdebug", (subsegT)0); | |
803 | bfd_set_section_flags(stdoutput, sec, SEC_HAS_CONTENTS|SEC_READONLY); | |
804 | bfd_set_section_alignment(stdoutput, sec, 3); | |
805 | } | |
806 | #endif /* OBJ_ELF */ | |
807 | ||
808 | subseg_set(text_section, 0); | |
809 | } | |
810 | ||
811 | /* The public interface to the instruction assembler. */ | |
812 | ||
813 | void | |
814 | md_assemble (str) | |
815 | char *str; | |
816 | { | |
817 | char opname[32]; /* current maximum is 13 */ | |
818 | expressionS tok[MAX_INSN_ARGS]; | |
819 | int ntok, opnamelen, trunclen; | |
820 | ||
821 | /* split off the opcode */ | |
822 | opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/468"); | |
823 | trunclen = (opnamelen < sizeof (opname) - 1 | |
824 | ? opnamelen | |
825 | : sizeof (opname) - 1); | |
826 | memcpy (opname, str, trunclen); | |
827 | opname[trunclen] = '\0'; | |
828 | ||
829 | /* tokenize the rest of the line */ | |
830 | if ((ntok = tokenize_arguments (str + opnamelen, tok, MAX_INSN_ARGS)) < 0) | |
831 | { | |
832 | as_bad (_("syntax error")); | |
833 | return; | |
834 | } | |
835 | ||
836 | /* finish it off */ | |
837 | assemble_tokens (opname, tok, ntok, alpha_macros_on); | |
838 | } | |
839 | ||
840 | /* Round up a section's size to the appropriate boundary. */ | |
841 | ||
842 | valueT | |
843 | md_section_align (seg, size) | |
844 | segT seg; | |
845 | valueT size; | |
846 | { | |
847 | int align = bfd_get_section_alignment(stdoutput, seg); | |
848 | valueT mask = ((valueT)1 << align) - 1; | |
849 | ||
850 | return (size + mask) & ~mask; | |
851 | } | |
852 | ||
853 | /* Turn a string in input_line_pointer into a floating point constant | |
854 | of type type, and store the appropriate bytes in *litP. The number | |
855 | of LITTLENUMS emitted is stored in *sizeP. An error message is | |
856 | returned, or NULL on OK. */ | |
857 | ||
858 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
859 | #define MAX_LITTLENUMS 6 | |
860 | ||
861 | extern char *vax_md_atof PARAMS ((int, char *, int *)); | |
862 | ||
863 | char * | |
864 | md_atof (type, litP, sizeP) | |
865 | char type; | |
866 | char *litP; | |
867 | int *sizeP; | |
868 | { | |
869 | int prec; | |
870 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
871 | LITTLENUM_TYPE *wordP; | |
872 | char *t; | |
873 | ||
874 | switch (type) | |
875 | { | |
876 | /* VAX floats */ | |
877 | case 'G': | |
878 | /* VAX md_atof doesn't like "G" for some reason. */ | |
879 | type = 'g'; | |
880 | case 'F': | |
881 | case 'D': | |
882 | return vax_md_atof (type, litP, sizeP); | |
883 | ||
884 | /* IEEE floats */ | |
885 | case 'f': | |
886 | prec = 2; | |
887 | break; | |
888 | ||
889 | case 'd': | |
890 | prec = 4; | |
891 | break; | |
892 | ||
893 | case 'x': | |
894 | case 'X': | |
895 | prec = 6; | |
896 | break; | |
897 | ||
898 | case 'p': | |
899 | case 'P': | |
900 | prec = 6; | |
901 | break; | |
902 | ||
903 | default: | |
904 | *sizeP = 0; | |
905 | return _("Bad call to MD_ATOF()"); | |
906 | } | |
907 | t = atof_ieee (input_line_pointer, type, words); | |
908 | if (t) | |
909 | input_line_pointer = t; | |
910 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
911 | ||
912 | for (wordP = words + prec - 1; prec--;) | |
913 | { | |
914 | md_number_to_chars (litP, (long) (*wordP--), sizeof (LITTLENUM_TYPE)); | |
915 | litP += sizeof (LITTLENUM_TYPE); | |
916 | } | |
917 | ||
918 | return 0; | |
919 | } | |
920 | ||
921 | /* Take care of the target-specific command-line options. */ | |
922 | ||
923 | int | |
924 | md_parse_option (c, arg) | |
925 | int c; | |
926 | char *arg; | |
927 | { | |
928 | switch (c) | |
929 | { | |
930 | case 'F': | |
931 | alpha_nofloats_on = 1; | |
932 | break; | |
933 | ||
934 | case OPTION_32ADDR: | |
935 | alpha_addr32_on = 1; | |
936 | break; | |
937 | ||
938 | case 'g': | |
939 | alpha_debug = 1; | |
940 | break; | |
941 | ||
942 | case 'G': | |
943 | g_switch_value = atoi(arg); | |
944 | break; | |
945 | ||
946 | case 'm': | |
947 | { | |
948 | const struct cpu_type *p; | |
949 | for (p = cpu_types; p->name; ++p) | |
950 | if (strcmp(arg, p->name) == 0) | |
951 | { | |
952 | alpha_target_name = p->name, alpha_target = p->flags; | |
953 | goto found; | |
954 | } | |
955 | as_warn(_("Unknown CPU identifier `%s'"), arg); | |
956 | found:; | |
957 | } | |
958 | break; | |
959 | ||
960 | #ifdef OBJ_EVAX | |
961 | case '+': /* For g++. Hash any name > 63 chars long. */ | |
962 | alpha_flag_hash_long_names = 1; | |
963 | break; | |
964 | ||
965 | case 'H': /* Show new symbol after hash truncation */ | |
966 | alpha_flag_show_after_trunc = 1; | |
967 | break; | |
968 | ||
969 | case 'h': /* for gnu-c/vax compatibility. */ | |
970 | break; | |
971 | #endif | |
972 | ||
973 | case OPTION_RELAX: | |
974 | alpha_flag_relax = 1; | |
975 | break; | |
976 | ||
977 | #ifdef OBJ_ELF | |
978 | case OPTION_MDEBUG: | |
979 | alpha_flag_mdebug = 1; | |
980 | break; | |
981 | case OPTION_NO_MDEBUG: | |
982 | alpha_flag_mdebug = 0; | |
983 | break; | |
984 | #endif | |
985 | ||
986 | default: | |
987 | return 0; | |
988 | } | |
989 | ||
990 | return 1; | |
991 | } | |
992 | ||
993 | /* Print a description of the command-line options that we accept. */ | |
994 | ||
995 | void | |
996 | md_show_usage (stream) | |
997 | FILE *stream; | |
998 | { | |
999 | fputs(_("\ | |
1000 | Alpha options:\n\ | |
1001 | -32addr treat addresses as 32-bit values\n\ | |
1002 | -F lack floating point instructions support\n\ | |
1003 | -mev4 | -mev45 | -mev5 | -mev56 | -mpca56 | -mev6 | -mall\n\ | |
1004 | specify variant of Alpha architecture\n\ | |
1005 | -m21064 | -m21066 | -m21164 | -m21164a | -m21164pc | -m21264\n\ | |
1006 | these variants include PALcode opcodes\n"), | |
1007 | stream); | |
1008 | #ifdef OBJ_EVAX | |
1009 | fputs (_("\ | |
1010 | VMS options:\n\ | |
1011 | -+ hash encode (don't truncate) names longer than 64 characters\n\ | |
1012 | -H show new symbol after hash truncation\n"), | |
1013 | stream); | |
1014 | #endif | |
1015 | } | |
1016 | ||
1017 | /* Decide from what point a pc-relative relocation is relative to, | |
1018 | relative to the pc-relative fixup. Er, relatively speaking. */ | |
1019 | ||
1020 | long | |
1021 | md_pcrel_from (fixP) | |
1022 | fixS *fixP; | |
1023 | { | |
1024 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; | |
1025 | switch (fixP->fx_r_type) | |
1026 | { | |
1027 | case BFD_RELOC_ALPHA_GPDISP: | |
1028 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1029 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1030 | return addr; | |
1031 | default: | |
1032 | return fixP->fx_size + addr; | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | /* Attempt to simplify or even eliminate a fixup. The return value is | |
1037 | ignored; perhaps it was once meaningful, but now it is historical. | |
1038 | To indicate that a fixup has been eliminated, set fixP->fx_done. | |
1039 | ||
1040 | For ELF, here it is that we transform the GPDISP_HI16 reloc we used | |
1041 | internally into the GPDISP reloc used externally. We had to do | |
1042 | this so that we'd have the GPDISP_LO16 reloc as a tag to compute | |
1043 | the distance to the "lda" instruction for setting the addend to | |
1044 | GPDISP. */ | |
1045 | ||
1046 | int | |
1047 | md_apply_fix (fixP, valueP) | |
1048 | fixS *fixP; | |
1049 | valueT *valueP; | |
1050 | { | |
1051 | char * const fixpos = fixP->fx_frag->fr_literal + fixP->fx_where; | |
1052 | valueT value = *valueP; | |
1053 | unsigned image, size; | |
1054 | ||
1055 | switch (fixP->fx_r_type) | |
1056 | { | |
1057 | /* The GPDISP relocations are processed internally with a symbol | |
1058 | referring to the current function; we need to drop in a value | |
1059 | which, when added to the address of the start of the function, | |
1060 | gives the desired GP. */ | |
1061 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1062 | { | |
1063 | fixS *next = fixP->fx_next; | |
1064 | assert (next->fx_r_type == BFD_RELOC_ALPHA_GPDISP_LO16); | |
1065 | ||
1066 | fixP->fx_offset = (next->fx_frag->fr_address + next->fx_where | |
1067 | - fixP->fx_frag->fr_address - fixP->fx_where); | |
1068 | ||
1069 | value = (value - sign_extend_16 (value)) >> 16; | |
1070 | } | |
1071 | #ifdef OBJ_ELF | |
1072 | fixP->fx_r_type = BFD_RELOC_ALPHA_GPDISP; | |
1073 | #endif | |
1074 | goto do_reloc_gp; | |
1075 | ||
1076 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1077 | value = sign_extend_16 (value); | |
1078 | fixP->fx_offset = 0; | |
1079 | #ifdef OBJ_ELF | |
1080 | fixP->fx_done = 1; | |
1081 | #endif | |
1082 | ||
1083 | do_reloc_gp: | |
9de8d8f1 | 1084 | fixP->fx_addsy = section_symbol (now_seg); |
252b5132 RH |
1085 | md_number_to_chars (fixpos, value, 2); |
1086 | break; | |
1087 | ||
1088 | case BFD_RELOC_16: | |
1089 | if (fixP->fx_pcrel) | |
1090 | fixP->fx_r_type = BFD_RELOC_16_PCREL; | |
1091 | size = 2; | |
1092 | goto do_reloc_xx; | |
1093 | case BFD_RELOC_32: | |
1094 | if (fixP->fx_pcrel) | |
1095 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
1096 | size = 4; | |
1097 | goto do_reloc_xx; | |
1098 | case BFD_RELOC_64: | |
1099 | if (fixP->fx_pcrel) | |
1100 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
1101 | size = 8; | |
1102 | do_reloc_xx: | |
1103 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
1104 | { | |
1105 | md_number_to_chars (fixpos, value, size); | |
1106 | goto done; | |
1107 | } | |
1108 | return 1; | |
1109 | ||
1110 | #ifdef OBJ_ECOFF | |
1111 | case BFD_RELOC_GPREL32: | |
1112 | assert (fixP->fx_subsy == alpha_gp_symbol); | |
1113 | fixP->fx_subsy = 0; | |
1114 | /* FIXME: inherited this obliviousness of `value' -- why? */ | |
1115 | md_number_to_chars (fixpos, -alpha_gp_value, 4); | |
1116 | break; | |
1117 | #endif | |
1118 | #ifdef OBJ_ELF | |
1119 | case BFD_RELOC_GPREL32: | |
1120 | return 1; | |
1121 | #endif | |
1122 | ||
1123 | case BFD_RELOC_23_PCREL_S2: | |
1124 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
1125 | { | |
1126 | image = bfd_getl32(fixpos); | |
1127 | image = (image & ~0x1FFFFF) | ((value >> 2) & 0x1FFFFF); | |
1128 | goto write_done; | |
1129 | } | |
1130 | return 1; | |
1131 | ||
1132 | case BFD_RELOC_ALPHA_HINT: | |
1133 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
1134 | { | |
1135 | image = bfd_getl32(fixpos); | |
1136 | image = (image & ~0x3FFF) | ((value >> 2) & 0x3FFF); | |
1137 | goto write_done; | |
1138 | } | |
1139 | return 1; | |
1140 | ||
1141 | #ifdef OBJ_ECOFF | |
1142 | case BFD_RELOC_ALPHA_LITERAL: | |
1143 | md_number_to_chars (fixpos, value, 2); | |
1144 | return 1; | |
1145 | ||
1146 | case BFD_RELOC_ALPHA_LITUSE: | |
1147 | return 1; | |
1148 | #endif | |
1149 | #ifdef OBJ_ELF | |
1150 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1151 | case BFD_RELOC_ALPHA_LITUSE: | |
1152 | return 1; | |
1153 | #endif | |
1154 | #ifdef OBJ_EVAX | |
1155 | case BFD_RELOC_ALPHA_LINKAGE: | |
1156 | case BFD_RELOC_ALPHA_CODEADDR: | |
1157 | return 1; | |
1158 | #endif | |
1159 | ||
1160 | default: | |
1161 | { | |
1162 | const struct alpha_operand *operand; | |
1163 | ||
1164 | if ((int)fixP->fx_r_type >= 0) | |
1165 | as_fatal (_("unhandled relocation type %s"), | |
1166 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
1167 | ||
1168 | assert (-(int)fixP->fx_r_type < alpha_num_operands); | |
1169 | operand = &alpha_operands[-(int)fixP->fx_r_type]; | |
1170 | ||
1171 | /* The rest of these fixups only exist internally during symbol | |
1172 | resolution and have no representation in the object file. | |
1173 | Therefore they must be completely resolved as constants. */ | |
1174 | ||
1175 | if (fixP->fx_addsy != 0 | |
49309057 | 1176 | && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section) |
252b5132 RH |
1177 | as_bad_where (fixP->fx_file, fixP->fx_line, |
1178 | _("non-absolute expression in constant field")); | |
1179 | ||
1180 | image = bfd_getl32(fixpos); | |
1181 | image = insert_operand(image, operand, (offsetT)value, | |
1182 | fixP->fx_file, fixP->fx_line); | |
1183 | } | |
1184 | goto write_done; | |
1185 | } | |
1186 | ||
1187 | if (fixP->fx_addsy != 0 || fixP->fx_pcrel != 0) | |
1188 | return 1; | |
1189 | else | |
1190 | { | |
1191 | as_warn_where(fixP->fx_file, fixP->fx_line, | |
1192 | _("type %d reloc done?\n"), (int)fixP->fx_r_type); | |
1193 | goto done; | |
1194 | } | |
1195 | ||
1196 | write_done: | |
1197 | md_number_to_chars(fixpos, image, 4); | |
1198 | ||
1199 | done: | |
1200 | fixP->fx_done = 1; | |
1201 | return 0; | |
1202 | } | |
1203 | ||
1204 | /* | |
1205 | * Look for a register name in the given symbol. | |
1206 | */ | |
1207 | ||
1208 | symbolS * | |
1209 | md_undefined_symbol(name) | |
1210 | char *name; | |
1211 | { | |
1212 | if (*name == '$') | |
1213 | { | |
1214 | int is_float = 0, num; | |
1215 | ||
1216 | switch (*++name) | |
1217 | { | |
1218 | case 'f': | |
1219 | if (name[1] == 'p' && name[2] == '\0') | |
1220 | return alpha_register_table[AXP_REG_FP]; | |
1221 | is_float = 32; | |
1222 | /* FALLTHRU */ | |
1223 | ||
1224 | case 'r': | |
1225 | if (!isdigit(*++name)) | |
1226 | break; | |
1227 | /* FALLTHRU */ | |
1228 | ||
1229 | case '0': case '1': case '2': case '3': case '4': | |
1230 | case '5': case '6': case '7': case '8': case '9': | |
1231 | if (name[1] == '\0') | |
1232 | num = name[0] - '0'; | |
1233 | else if (name[0] != '0' && isdigit(name[1]) && name[2] == '\0') | |
1234 | { | |
1235 | num = (name[0] - '0') * 10 + name[1] - '0'; | |
1236 | if (num >= 32) | |
1237 | break; | |
1238 | } | |
1239 | else | |
1240 | break; | |
1241 | ||
1242 | if (!alpha_noat_on && num == AXP_REG_AT) | |
1243 | as_warn(_("Used $at without \".set noat\"")); | |
1244 | return alpha_register_table[num + is_float]; | |
1245 | ||
1246 | case 'a': | |
1247 | if (name[1] == 't' && name[2] == '\0') | |
1248 | { | |
1249 | if (!alpha_noat_on) | |
1250 | as_warn(_("Used $at without \".set noat\"")); | |
1251 | return alpha_register_table[AXP_REG_AT]; | |
1252 | } | |
1253 | break; | |
1254 | ||
1255 | case 'g': | |
1256 | if (name[1] == 'p' && name[2] == '\0') | |
1257 | return alpha_register_table[alpha_gp_register]; | |
1258 | break; | |
1259 | ||
1260 | case 's': | |
1261 | if (name[1] == 'p' && name[2] == '\0') | |
1262 | return alpha_register_table[AXP_REG_SP]; | |
1263 | break; | |
1264 | } | |
1265 | } | |
1266 | return NULL; | |
1267 | } | |
1268 | ||
1269 | #ifdef OBJ_ECOFF | |
1270 | /* @@@ Magic ECOFF bits. */ | |
1271 | ||
1272 | void | |
1273 | alpha_frob_ecoff_data () | |
1274 | { | |
1275 | select_gp_value (); | |
1276 | /* $zero and $f31 are read-only */ | |
1277 | alpha_gprmask &= ~1; | |
1278 | alpha_fprmask &= ~1; | |
1279 | } | |
1280 | #endif | |
1281 | ||
1282 | /* Hook to remember a recently defined label so that the auto-align | |
1283 | code can adjust the symbol after we know what alignment will be | |
1284 | required. */ | |
1285 | ||
1286 | void | |
1287 | alpha_define_label (sym) | |
1288 | symbolS *sym; | |
1289 | { | |
1290 | alpha_insn_label = sym; | |
1291 | } | |
1292 | ||
1293 | /* Return true if we must always emit a reloc for a type and false if | |
1294 | there is some hope of resolving it a assembly time. */ | |
1295 | ||
1296 | int | |
1297 | alpha_force_relocation (f) | |
1298 | fixS *f; | |
1299 | { | |
1300 | if (alpha_flag_relax) | |
1301 | return 1; | |
1302 | ||
1303 | switch (f->fx_r_type) | |
1304 | { | |
1305 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1306 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1307 | case BFD_RELOC_ALPHA_GPDISP: | |
1308 | #ifdef OBJ_ECOFF | |
1309 | case BFD_RELOC_ALPHA_LITERAL: | |
1310 | #endif | |
1311 | #ifdef OBJ_ELF | |
1312 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1313 | #endif | |
1314 | case BFD_RELOC_ALPHA_LITUSE: | |
1315 | case BFD_RELOC_GPREL32: | |
1316 | #ifdef OBJ_EVAX | |
1317 | case BFD_RELOC_ALPHA_LINKAGE: | |
1318 | case BFD_RELOC_ALPHA_CODEADDR: | |
1319 | #endif | |
1320 | return 1; | |
1321 | ||
1322 | case BFD_RELOC_23_PCREL_S2: | |
1323 | case BFD_RELOC_32: | |
1324 | case BFD_RELOC_64: | |
1325 | case BFD_RELOC_ALPHA_HINT: | |
1326 | return 0; | |
1327 | ||
1328 | default: | |
1329 | assert((int)f->fx_r_type < 0 && -(int)f->fx_r_type < alpha_num_operands); | |
1330 | return 0; | |
1331 | } | |
1332 | } | |
1333 | ||
1334 | /* Return true if we can partially resolve a relocation now. */ | |
1335 | ||
1336 | int | |
1337 | alpha_fix_adjustable (f) | |
1338 | fixS *f; | |
1339 | { | |
1340 | #ifdef OBJ_ELF | |
1341 | /* Prevent all adjustments to global symbols */ | |
1342 | if (S_IS_EXTERN (f->fx_addsy) || S_IS_WEAK (f->fx_addsy)) | |
1343 | return 0; | |
1344 | #endif | |
1345 | ||
1346 | /* Are there any relocation types for which we must generate a reloc | |
1347 | but we can adjust the values contained within it? */ | |
1348 | switch (f->fx_r_type) | |
1349 | { | |
1350 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1351 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1352 | case BFD_RELOC_ALPHA_GPDISP: | |
1353 | return 0; | |
1354 | ||
1355 | #ifdef OBJ_ECOFF | |
1356 | case BFD_RELOC_ALPHA_LITERAL: | |
1357 | #endif | |
1358 | #ifdef OBJ_ELF | |
1359 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1360 | #endif | |
1361 | #ifdef OBJ_EVAX | |
1362 | case BFD_RELOC_ALPHA_LINKAGE: | |
1363 | case BFD_RELOC_ALPHA_CODEADDR: | |
1364 | #endif | |
1365 | return 1; | |
1366 | ||
1367 | case BFD_RELOC_ALPHA_LITUSE: | |
1368 | return 0; | |
1369 | ||
1370 | case BFD_RELOC_GPREL32: | |
1371 | case BFD_RELOC_23_PCREL_S2: | |
1372 | case BFD_RELOC_32: | |
1373 | case BFD_RELOC_64: | |
1374 | case BFD_RELOC_ALPHA_HINT: | |
1375 | return 1; | |
1376 | ||
1377 | default: | |
1378 | assert ((int)f->fx_r_type < 0 | |
1379 | && - (int)f->fx_r_type < alpha_num_operands); | |
1380 | return 1; | |
1381 | } | |
1382 | /*NOTREACHED*/ | |
1383 | } | |
1384 | ||
1385 | /* Generate the BFD reloc to be stuck in the object file from the | |
1386 | fixup used internally in the assembler. */ | |
1387 | ||
1388 | arelent * | |
1389 | tc_gen_reloc (sec, fixp) | |
1390 | asection *sec; | |
1391 | fixS *fixp; | |
1392 | { | |
1393 | arelent *reloc; | |
1394 | ||
1395 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
49309057 ILT |
1396 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
1397 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
1398 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
1399 | ||
1400 | /* Make sure none of our internal relocations make it this far. | |
1401 | They'd better have been fully resolved by this point. */ | |
1402 | assert ((int)fixp->fx_r_type > 0); | |
1403 | ||
1404 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
1405 | if (reloc->howto == NULL) | |
1406 | { | |
1407 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1408 | _("cannot represent `%s' relocation in object file"), | |
1409 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
1410 | return NULL; | |
1411 | } | |
1412 | ||
1413 | if (!fixp->fx_pcrel != !reloc->howto->pc_relative) | |
1414 | { | |
1415 | as_fatal (_("internal error? cannot generate `%s' relocation"), | |
1416 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
1417 | } | |
1418 | assert (!fixp->fx_pcrel == !reloc->howto->pc_relative); | |
1419 | ||
1420 | #ifdef OBJ_ECOFF | |
1421 | if (fixp->fx_r_type == BFD_RELOC_ALPHA_LITERAL) | |
1422 | { | |
1423 | /* fake out bfd_perform_relocation. sigh */ | |
1424 | reloc->addend = -alpha_gp_value; | |
1425 | } | |
1426 | else | |
1427 | #endif | |
1428 | { | |
1429 | reloc->addend = fixp->fx_offset; | |
1430 | #ifdef OBJ_ELF | |
1431 | /* | |
1432 | * Ohhh, this is ugly. The problem is that if this is a local global | |
1433 | * symbol, the relocation will entirely be performed at link time, not | |
1434 | * at assembly time. bfd_perform_reloc doesn't know about this sort | |
1435 | * of thing, and as a result we need to fake it out here. | |
1436 | */ | |
1437 | if ((S_IS_EXTERN (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy)) | |
1438 | && !S_IS_COMMON(fixp->fx_addsy)) | |
49309057 | 1439 | reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value; |
252b5132 RH |
1440 | #endif |
1441 | } | |
1442 | ||
1443 | return reloc; | |
1444 | } | |
1445 | ||
1446 | /* Parse a register name off of the input_line and return a register | |
1447 | number. Gets md_undefined_symbol above to do the register name | |
1448 | matching for us. | |
1449 | ||
1450 | Only called as a part of processing the ECOFF .frame directive. */ | |
1451 | ||
1452 | int | |
1453 | tc_get_register (frame) | |
1454 | int frame; | |
1455 | { | |
1456 | int framereg = AXP_REG_SP; | |
1457 | ||
1458 | SKIP_WHITESPACE (); | |
1459 | if (*input_line_pointer == '$') | |
1460 | { | |
1461 | char *s = input_line_pointer; | |
1462 | char c = get_symbol_end (); | |
1463 | symbolS *sym = md_undefined_symbol (s); | |
1464 | ||
1465 | *strchr(s, '\0') = c; | |
1466 | if (sym && (framereg = S_GET_VALUE (sym)) <= 31) | |
1467 | goto found; | |
1468 | } | |
1469 | as_warn (_("frame reg expected, using $%d."), framereg); | |
1470 | ||
1471 | found: | |
1472 | note_gpreg (framereg); | |
1473 | return framereg; | |
1474 | } | |
1475 | ||
1476 | /* This is called before the symbol table is processed. In order to | |
1477 | work with gcc when using mips-tfile, we must keep all local labels. | |
1478 | However, in other cases, we want to discard them. If we were | |
1479 | called with -g, but we didn't see any debugging information, it may | |
1480 | mean that gcc is smuggling debugging information through to | |
1481 | mips-tfile, in which case we must generate all local labels. */ | |
1482 | ||
1483 | #ifdef OBJ_ECOFF | |
1484 | ||
1485 | void | |
1486 | alpha_frob_file_before_adjust () | |
1487 | { | |
1488 | if (alpha_debug != 0 | |
1489 | && ! ecoff_debugging_seen) | |
1490 | flag_keep_locals = 1; | |
1491 | } | |
1492 | ||
1493 | #endif /* OBJ_ECOFF */ | |
1494 | \f | |
1495 | /* Parse the arguments to an opcode. */ | |
1496 | ||
1497 | static int | |
1498 | tokenize_arguments (str, tok, ntok) | |
1499 | char *str; | |
1500 | expressionS tok[]; | |
1501 | int ntok; | |
1502 | { | |
1503 | expressionS *end_tok = tok + ntok; | |
1504 | char *old_input_line_pointer; | |
1505 | int saw_comma = 0, saw_arg = 0; | |
1506 | ||
1507 | memset (tok, 0, sizeof (*tok) * ntok); | |
1508 | ||
1509 | /* Save and restore input_line_pointer around this function */ | |
1510 | old_input_line_pointer = input_line_pointer; | |
1511 | input_line_pointer = str; | |
1512 | ||
1513 | while (tok < end_tok && *input_line_pointer) | |
1514 | { | |
1515 | SKIP_WHITESPACE (); | |
1516 | switch (*input_line_pointer) | |
1517 | { | |
1518 | case '\0': | |
1519 | goto fini; | |
1520 | ||
1521 | case ',': | |
1522 | ++input_line_pointer; | |
1523 | if (saw_comma || !saw_arg) | |
1524 | goto err; | |
1525 | saw_comma = 1; | |
1526 | break; | |
1527 | ||
1528 | case '(': | |
1529 | { | |
1530 | char *hold = input_line_pointer++; | |
1531 | ||
1532 | /* First try for parenthesized register ... */ | |
1533 | expression (tok); | |
1534 | if (*input_line_pointer == ')' && tok->X_op == O_register) | |
1535 | { | |
1536 | tok->X_op = (saw_comma ? O_cpregister : O_pregister); | |
1537 | saw_comma = 0; | |
1538 | saw_arg = 1; | |
1539 | ++input_line_pointer; | |
1540 | ++tok; | |
1541 | break; | |
1542 | } | |
1543 | ||
1544 | /* ... then fall through to plain expression */ | |
1545 | input_line_pointer = hold; | |
1546 | } | |
1547 | ||
1548 | default: | |
1549 | if (saw_arg && !saw_comma) | |
1550 | goto err; | |
1551 | expression (tok); | |
1552 | if (tok->X_op == O_illegal || tok->X_op == O_absent) | |
1553 | goto err; | |
1554 | ||
1555 | saw_comma = 0; | |
1556 | saw_arg = 1; | |
1557 | ++tok; | |
1558 | break; | |
1559 | } | |
1560 | } | |
1561 | ||
1562 | fini: | |
1563 | if (saw_comma) | |
1564 | goto err; | |
1565 | input_line_pointer = old_input_line_pointer; | |
1566 | return ntok - (end_tok - tok); | |
1567 | ||
1568 | err: | |
1569 | input_line_pointer = old_input_line_pointer; | |
1570 | return -1; | |
1571 | } | |
1572 | ||
1573 | /* Search forward through all variants of an opcode looking for a | |
1574 | syntax match. */ | |
1575 | ||
1576 | static const struct alpha_opcode * | |
1577 | find_opcode_match(first_opcode, tok, pntok, pcpumatch) | |
1578 | const struct alpha_opcode *first_opcode; | |
1579 | const expressionS *tok; | |
1580 | int *pntok; | |
1581 | int *pcpumatch; | |
1582 | { | |
1583 | const struct alpha_opcode *opcode = first_opcode; | |
1584 | int ntok = *pntok; | |
1585 | int got_cpu_match = 0; | |
1586 | ||
1587 | do | |
1588 | { | |
1589 | const unsigned char *opidx; | |
1590 | int tokidx = 0; | |
1591 | ||
1592 | /* Don't match opcodes that don't exist on this architecture */ | |
1593 | if (!(opcode->flags & alpha_target)) | |
1594 | goto match_failed; | |
1595 | ||
1596 | got_cpu_match = 1; | |
1597 | ||
1598 | for (opidx = opcode->operands; *opidx; ++opidx) | |
1599 | { | |
1600 | const struct alpha_operand *operand = &alpha_operands[*opidx]; | |
1601 | ||
1602 | /* only take input from real operands */ | |
1603 | if (operand->flags & AXP_OPERAND_FAKE) | |
1604 | continue; | |
1605 | ||
1606 | /* when we expect input, make sure we have it */ | |
1607 | if (tokidx >= ntok) | |
1608 | { | |
1609 | if ((operand->flags & AXP_OPERAND_OPTIONAL_MASK) == 0) | |
1610 | goto match_failed; | |
1611 | continue; | |
1612 | } | |
1613 | ||
1614 | /* match operand type with expression type */ | |
1615 | switch (operand->flags & AXP_OPERAND_TYPECHECK_MASK) | |
1616 | { | |
1617 | case AXP_OPERAND_IR: | |
1618 | if (tok[tokidx].X_op != O_register | |
1619 | || !is_ir_num(tok[tokidx].X_add_number)) | |
1620 | goto match_failed; | |
1621 | break; | |
1622 | case AXP_OPERAND_FPR: | |
1623 | if (tok[tokidx].X_op != O_register | |
1624 | || !is_fpr_num(tok[tokidx].X_add_number)) | |
1625 | goto match_failed; | |
1626 | break; | |
1627 | case AXP_OPERAND_IR|AXP_OPERAND_PARENS: | |
1628 | if (tok[tokidx].X_op != O_pregister | |
1629 | || !is_ir_num(tok[tokidx].X_add_number)) | |
1630 | goto match_failed; | |
1631 | break; | |
1632 | case AXP_OPERAND_IR|AXP_OPERAND_PARENS|AXP_OPERAND_COMMA: | |
1633 | if (tok[tokidx].X_op != O_cpregister | |
1634 | || !is_ir_num(tok[tokidx].X_add_number)) | |
1635 | goto match_failed; | |
1636 | break; | |
1637 | ||
1638 | case AXP_OPERAND_RELATIVE: | |
1639 | case AXP_OPERAND_SIGNED: | |
1640 | case AXP_OPERAND_UNSIGNED: | |
1641 | switch (tok[tokidx].X_op) | |
1642 | { | |
1643 | case O_illegal: | |
1644 | case O_absent: | |
1645 | case O_register: | |
1646 | case O_pregister: | |
1647 | case O_cpregister: | |
1648 | goto match_failed; | |
1649 | ||
1650 | default: | |
1651 | break; | |
1652 | } | |
1653 | break; | |
1654 | ||
1655 | default: | |
1656 | /* everything else should have been fake */ | |
1657 | abort(); | |
1658 | } | |
1659 | ++tokidx; | |
1660 | } | |
1661 | ||
1662 | /* possible match -- did we use all of our input? */ | |
1663 | if (tokidx == ntok) | |
1664 | { | |
1665 | *pntok = ntok; | |
1666 | return opcode; | |
1667 | } | |
1668 | ||
1669 | match_failed:; | |
1670 | } | |
1671 | while (++opcode-alpha_opcodes < alpha_num_opcodes | |
1672 | && !strcmp(opcode->name, first_opcode->name)); | |
1673 | ||
1674 | if (*pcpumatch) | |
1675 | *pcpumatch = got_cpu_match; | |
1676 | ||
1677 | return NULL; | |
1678 | } | |
1679 | ||
1680 | /* Search forward through all variants of a macro looking for a syntax | |
1681 | match. */ | |
1682 | ||
1683 | static const struct alpha_macro * | |
1684 | find_macro_match(first_macro, tok, pntok) | |
1685 | const struct alpha_macro *first_macro; | |
1686 | const expressionS *tok; | |
1687 | int *pntok; | |
1688 | { | |
1689 | const struct alpha_macro *macro = first_macro; | |
1690 | int ntok = *pntok; | |
1691 | ||
1692 | do | |
1693 | { | |
1694 | const enum alpha_macro_arg *arg = macro->argsets; | |
1695 | int tokidx = 0; | |
1696 | ||
1697 | while (*arg) | |
1698 | { | |
1699 | switch (*arg) | |
1700 | { | |
1701 | case MACRO_EOA: | |
1702 | if (tokidx == ntok) | |
1703 | return macro; | |
1704 | else | |
1705 | tokidx = 0; | |
1706 | break; | |
1707 | ||
1708 | case MACRO_IR: | |
1709 | if (tokidx >= ntok || tok[tokidx].X_op != O_register | |
1710 | || !is_ir_num(tok[tokidx].X_add_number)) | |
1711 | goto match_failed; | |
1712 | ++tokidx; | |
1713 | break; | |
1714 | case MACRO_PIR: | |
1715 | if (tokidx >= ntok || tok[tokidx].X_op != O_pregister | |
1716 | || !is_ir_num(tok[tokidx].X_add_number)) | |
1717 | goto match_failed; | |
1718 | ++tokidx; | |
1719 | break; | |
1720 | case MACRO_CPIR: | |
1721 | if (tokidx >= ntok || tok[tokidx].X_op != O_cpregister | |
1722 | || !is_ir_num(tok[tokidx].X_add_number)) | |
1723 | goto match_failed; | |
1724 | ++tokidx; | |
1725 | break; | |
1726 | case MACRO_FPR: | |
1727 | if (tokidx >= ntok || tok[tokidx].X_op != O_register | |
1728 | || !is_fpr_num(tok[tokidx].X_add_number)) | |
1729 | goto match_failed; | |
1730 | ++tokidx; | |
1731 | break; | |
1732 | ||
1733 | case MACRO_EXP: | |
1734 | if (tokidx >= ntok) | |
1735 | goto match_failed; | |
1736 | switch (tok[tokidx].X_op) | |
1737 | { | |
1738 | case O_illegal: | |
1739 | case O_absent: | |
1740 | case O_register: | |
1741 | case O_pregister: | |
1742 | case O_cpregister: | |
1743 | goto match_failed; | |
1744 | ||
1745 | default: | |
1746 | break; | |
1747 | } | |
1748 | ++tokidx; | |
1749 | break; | |
1750 | ||
1751 | match_failed: | |
1752 | while (*arg != MACRO_EOA) | |
1753 | ++arg; | |
1754 | tokidx = 0; | |
1755 | break; | |
1756 | } | |
1757 | ++arg; | |
1758 | } | |
1759 | } | |
1760 | while (++macro-alpha_macros < alpha_num_macros | |
1761 | && !strcmp(macro->name, first_macro->name)); | |
1762 | ||
1763 | return NULL; | |
1764 | } | |
1765 | ||
1766 | /* Insert an operand value into an instruction. */ | |
1767 | ||
1768 | static unsigned | |
1769 | insert_operand(insn, operand, val, file, line) | |
1770 | unsigned insn; | |
1771 | const struct alpha_operand *operand; | |
1772 | offsetT val; | |
1773 | char *file; | |
1774 | unsigned line; | |
1775 | { | |
1776 | if (operand->bits != 32 && !(operand->flags & AXP_OPERAND_NOOVERFLOW)) | |
1777 | { | |
1778 | offsetT min, max; | |
1779 | ||
1780 | if (operand->flags & AXP_OPERAND_SIGNED) | |
1781 | { | |
1782 | max = (1 << (operand->bits - 1)) - 1; | |
1783 | min = -(1 << (operand->bits - 1)); | |
1784 | } | |
1785 | else | |
1786 | { | |
1787 | max = (1 << operand->bits) - 1; | |
1788 | min = 0; | |
1789 | } | |
1790 | ||
1791 | if (val < min || val > max) | |
1792 | { | |
1793 | const char *err = | |
1794 | _("operand out of range (%s not between %d and %d)"); | |
1795 | char buf[sizeof (val) * 3 + 2]; | |
1796 | ||
1797 | sprint_value(buf, val); | |
1798 | if (file) | |
1799 | as_warn_where(file, line, err, buf, min, max); | |
1800 | else | |
1801 | as_warn(err, buf, min, max); | |
1802 | } | |
1803 | } | |
1804 | ||
1805 | if (operand->insert) | |
1806 | { | |
1807 | const char *errmsg = NULL; | |
1808 | ||
1809 | insn = (*operand->insert) (insn, val, &errmsg); | |
1810 | if (errmsg) | |
1811 | as_warn (errmsg); | |
1812 | } | |
1813 | else | |
1814 | insn |= ((val & ((1 << operand->bits) - 1)) << operand->shift); | |
1815 | ||
1816 | return insn; | |
1817 | } | |
1818 | ||
1819 | /* | |
1820 | * Turn an opcode description and a set of arguments into | |
1821 | * an instruction and a fixup. | |
1822 | */ | |
1823 | ||
1824 | static void | |
1825 | assemble_insn(opcode, tok, ntok, insn) | |
1826 | const struct alpha_opcode *opcode; | |
1827 | const expressionS *tok; | |
1828 | int ntok; | |
1829 | struct alpha_insn *insn; | |
1830 | { | |
1831 | const unsigned char *argidx; | |
1832 | unsigned image; | |
1833 | int tokidx = 0; | |
1834 | ||
1835 | memset (insn, 0, sizeof (*insn)); | |
1836 | image = opcode->opcode; | |
1837 | ||
1838 | for (argidx = opcode->operands; *argidx; ++argidx) | |
1839 | { | |
1840 | const struct alpha_operand *operand = &alpha_operands[*argidx]; | |
1841 | const expressionS *t; | |
1842 | ||
1843 | if (operand->flags & AXP_OPERAND_FAKE) | |
1844 | { | |
1845 | /* fake operands take no value and generate no fixup */ | |
1846 | image = insert_operand(image, operand, 0, NULL, 0); | |
1847 | continue; | |
1848 | } | |
1849 | ||
1850 | if (tokidx >= ntok) | |
1851 | { | |
1852 | switch (operand->flags & AXP_OPERAND_OPTIONAL_MASK) | |
1853 | { | |
1854 | case AXP_OPERAND_DEFAULT_FIRST: | |
1855 | t = &tok[0]; | |
1856 | break; | |
1857 | case AXP_OPERAND_DEFAULT_SECOND: | |
1858 | t = &tok[1]; | |
1859 | break; | |
1860 | case AXP_OPERAND_DEFAULT_ZERO: | |
1861 | { | |
1862 | static const expressionS zero_exp = { 0, 0, 0, O_constant, 1 }; | |
1863 | t = &zero_exp; | |
1864 | } | |
1865 | break; | |
1866 | default: | |
1867 | abort(); | |
1868 | } | |
1869 | } | |
1870 | else | |
1871 | t = &tok[tokidx++]; | |
1872 | ||
1873 | switch (t->X_op) | |
1874 | { | |
1875 | case O_register: | |
1876 | case O_pregister: | |
1877 | case O_cpregister: | |
1878 | image = insert_operand(image, operand, regno(t->X_add_number), | |
1879 | NULL, 0); | |
1880 | break; | |
1881 | ||
1882 | case O_constant: | |
1883 | image = insert_operand(image, operand, t->X_add_number, NULL, 0); | |
1884 | break; | |
1885 | ||
1886 | default: | |
1887 | { | |
1888 | struct alpha_fixup *fixup; | |
1889 | ||
1890 | if (insn->nfixups >= MAX_INSN_FIXUPS) | |
1891 | as_fatal(_("too many fixups")); | |
1892 | ||
1893 | fixup = &insn->fixups[insn->nfixups++]; | |
1894 | ||
1895 | fixup->exp = *t; | |
1896 | fixup->reloc = operand->default_reloc; | |
1897 | } | |
1898 | break; | |
1899 | } | |
1900 | } | |
1901 | ||
1902 | insn->insn = image; | |
1903 | } | |
1904 | ||
1905 | /* | |
1906 | * Actually output an instruction with its fixup. | |
1907 | */ | |
1908 | ||
1909 | static void | |
1910 | emit_insn (insn) | |
1911 | struct alpha_insn *insn; | |
1912 | { | |
1913 | char *f; | |
1914 | int i; | |
1915 | ||
1916 | /* Take care of alignment duties */ | |
1917 | if (alpha_auto_align_on && alpha_current_align < 2) | |
1918 | alpha_align (2, (char *) NULL, alpha_insn_label, 0); | |
1919 | if (alpha_current_align > 2) | |
1920 | alpha_current_align = 2; | |
1921 | alpha_insn_label = NULL; | |
1922 | ||
1923 | /* Write out the instruction. */ | |
1924 | f = frag_more (4); | |
1925 | md_number_to_chars (f, insn->insn, 4); | |
1926 | ||
1927 | /* Apply the fixups in order */ | |
1928 | for (i = 0; i < insn->nfixups; ++i) | |
1929 | { | |
1930 | const struct alpha_operand *operand; | |
1931 | struct alpha_fixup *fixup = &insn->fixups[i]; | |
1932 | int size, pcrel; | |
1933 | fixS *fixP; | |
1934 | ||
1935 | /* Some fixups are only used internally and so have no howto */ | |
1936 | if ((int)fixup->reloc < 0) | |
1937 | { | |
1938 | operand = &alpha_operands[-(int)fixup->reloc]; | |
1939 | size = 4; | |
1940 | pcrel = ((operand->flags & AXP_OPERAND_RELATIVE) != 0); | |
1941 | } | |
1942 | #ifdef OBJ_ELF | |
1943 | /* These relocation types are only used internally. */ | |
1944 | else if (fixup->reloc == BFD_RELOC_ALPHA_GPDISP_HI16 | |
1945 | || fixup->reloc == BFD_RELOC_ALPHA_GPDISP_LO16) | |
1946 | { | |
1947 | size = 2, pcrel = 0; | |
1948 | } | |
1949 | #endif | |
1950 | else | |
1951 | { | |
1952 | reloc_howto_type *reloc_howto | |
1953 | = bfd_reloc_type_lookup (stdoutput, fixup->reloc); | |
1954 | assert (reloc_howto); | |
1955 | ||
1956 | size = bfd_get_reloc_size (reloc_howto); | |
1957 | pcrel = reloc_howto->pc_relative; | |
1958 | } | |
1959 | assert (size >= 1 && size <= 4); | |
1960 | ||
1961 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal, size, | |
1962 | &fixup->exp, pcrel, fixup->reloc); | |
1963 | ||
1964 | /* Turn off complaints that the addend is too large for some fixups */ | |
1965 | switch (fixup->reloc) | |
1966 | { | |
1967 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1968 | #ifdef OBJ_ECOFF | |
1969 | case BFD_RELOC_ALPHA_LITERAL: | |
1970 | #endif | |
1971 | #ifdef OBJ_ELF | |
1972 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1973 | #endif | |
1974 | case BFD_RELOC_GPREL32: | |
1975 | fixP->fx_no_overflow = 1; | |
1976 | break; | |
1977 | ||
1978 | default: | |
1979 | if ((int)fixup->reloc < 0) | |
1980 | { | |
1981 | if (operand->flags & AXP_OPERAND_NOOVERFLOW) | |
1982 | fixP->fx_no_overflow = 1; | |
1983 | } | |
1984 | break; | |
1985 | } | |
1986 | } | |
1987 | } | |
1988 | ||
1989 | /* Given an opcode name and a pre-tokenized set of arguments, assemble | |
1990 | the insn, but do not emit it. | |
1991 | ||
1992 | Note that this implies no macros allowed, since we can't store more | |
1993 | than one insn in an insn structure. */ | |
1994 | ||
1995 | static void | |
1996 | assemble_tokens_to_insn(opname, tok, ntok, insn) | |
1997 | const char *opname; | |
1998 | const expressionS *tok; | |
1999 | int ntok; | |
2000 | struct alpha_insn *insn; | |
2001 | { | |
2002 | const struct alpha_opcode *opcode; | |
2003 | ||
2004 | /* search opcodes */ | |
2005 | opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname); | |
2006 | if (opcode) | |
2007 | { | |
2008 | int cpumatch; | |
2009 | opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch); | |
2010 | if (opcode) | |
2011 | { | |
2012 | assemble_insn (opcode, tok, ntok, insn); | |
2013 | return; | |
2014 | } | |
2015 | else if (cpumatch) | |
2016 | as_bad (_("inappropriate arguments for opcode `%s'"), opname); | |
2017 | else | |
2018 | as_bad (_("opcode `%s' not supported for target %s"), opname, | |
2019 | alpha_target_name); | |
2020 | } | |
2021 | else | |
2022 | as_bad (_("unknown opcode `%s'"), opname); | |
2023 | } | |
2024 | ||
2025 | /* Given an opcode name and a pre-tokenized set of arguments, take the | |
2026 | opcode all the way through emission. */ | |
2027 | ||
2028 | static void | |
2029 | assemble_tokens (opname, tok, ntok, local_macros_on) | |
2030 | const char *opname; | |
2031 | const expressionS *tok; | |
2032 | int ntok; | |
2033 | int local_macros_on; | |
2034 | { | |
2035 | int found_something = 0; | |
2036 | const struct alpha_opcode *opcode; | |
2037 | const struct alpha_macro *macro; | |
2038 | int cpumatch = 1; | |
2039 | ||
2040 | /* search macros */ | |
2041 | if (local_macros_on) | |
2042 | { | |
2043 | macro = ((const struct alpha_macro *) | |
2044 | hash_find (alpha_macro_hash, opname)); | |
2045 | if (macro) | |
2046 | { | |
2047 | found_something = 1; | |
2048 | macro = find_macro_match (macro, tok, &ntok); | |
2049 | if (macro) | |
2050 | { | |
2051 | (*macro->emit) (tok, ntok, macro->arg); | |
2052 | return; | |
2053 | } | |
2054 | } | |
2055 | } | |
2056 | ||
2057 | /* search opcodes */ | |
2058 | opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname); | |
2059 | if (opcode) | |
2060 | { | |
2061 | found_something = 1; | |
2062 | opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch); | |
2063 | if (opcode) | |
2064 | { | |
2065 | struct alpha_insn insn; | |
2066 | assemble_insn (opcode, tok, ntok, &insn); | |
2067 | emit_insn (&insn); | |
2068 | return; | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | if (found_something) | |
2073 | if (cpumatch) | |
2074 | as_bad (_("inappropriate arguments for opcode `%s'"), opname); | |
2075 | else | |
2076 | as_bad (_("opcode `%s' not supported for target %s"), opname, | |
2077 | alpha_target_name); | |
2078 | else | |
2079 | as_bad (_("unknown opcode `%s'"), opname); | |
2080 | } | |
2081 | ||
2082 | \f | |
2083 | /* Some instruction sets indexed by lg(size) */ | |
2084 | static const char * const sextX_op[] = { "sextb", "sextw", "sextl", NULL }; | |
2085 | static const char * const insXl_op[] = { "insbl", "inswl", "insll", "insql" }; | |
2086 | static const char * const insXh_op[] = { NULL, "inswh", "inslh", "insqh" }; | |
2087 | static const char * const extXl_op[] = { "extbl", "extwl", "extll", "extql" }; | |
2088 | static const char * const extXh_op[] = { NULL, "extwh", "extlh", "extqh" }; | |
2089 | static const char * const mskXl_op[] = { "mskbl", "mskwl", "mskll", "mskql" }; | |
2090 | static const char * const mskXh_op[] = { NULL, "mskwh", "msklh", "mskqh" }; | |
2091 | static const char * const stX_op[] = { "stb", "stw", "stl", "stq" }; | |
2092 | static const char * const ldX_op[] = { "ldb", "ldw", "ldll", "ldq" }; | |
2093 | static const char * const ldXu_op[] = { "ldbu", "ldwu", NULL, NULL }; | |
2094 | ||
2095 | /* Implement the ldgp macro. */ | |
2096 | ||
2097 | static void | |
2098 | emit_ldgp (tok, ntok, unused) | |
2099 | const expressionS *tok; | |
2100 | int ntok; | |
2101 | const PTR unused; | |
2102 | { | |
2103 | #ifdef OBJ_AOUT | |
2104 | FIXME | |
2105 | #endif | |
2106 | #if defined(OBJ_ECOFF) || defined(OBJ_ELF) | |
2107 | /* from "ldgp r1,n(r2)", generate "ldah r1,X(R2); lda r1,Y(r1)" | |
2108 | with appropriate constants and relocations. */ | |
2109 | struct alpha_insn insn; | |
2110 | expressionS newtok[3]; | |
2111 | expressionS addend; | |
2112 | ||
252b5132 RH |
2113 | #ifdef OBJ_ECOFF |
2114 | if (regno (tok[2].X_add_number) == AXP_REG_PV) | |
2115 | ecoff_set_gp_prolog_size (0); | |
2116 | #endif | |
2117 | ||
2118 | newtok[0] = tok[0]; | |
2119 | set_tok_const (newtok[1], 0); | |
2120 | newtok[2] = tok[2]; | |
2121 | ||
2122 | assemble_tokens_to_insn ("ldah", newtok, 3, &insn); | |
2123 | ||
2124 | addend = tok[1]; | |
2125 | ||
2126 | #ifdef OBJ_ECOFF | |
2127 | if (addend.X_op != O_constant) | |
2128 | as_bad (_("can not resolve expression")); | |
2129 | addend.X_op = O_symbol; | |
2130 | addend.X_add_symbol = alpha_gp_symbol; | |
2131 | #endif | |
2132 | ||
2133 | insn.nfixups = 1; | |
2134 | insn.fixups[0].exp = addend; | |
2135 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_GPDISP_HI16; | |
2136 | ||
2137 | emit_insn (&insn); | |
2138 | ||
2139 | set_tok_preg (newtok[2], tok[0].X_add_number); | |
2140 | ||
2141 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
2142 | ||
2143 | #ifdef OBJ_ECOFF | |
2144 | addend.X_add_number += 4; | |
2145 | #endif | |
2146 | ||
2147 | insn.nfixups = 1; | |
2148 | insn.fixups[0].exp = addend; | |
2149 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_GPDISP_LO16; | |
2150 | ||
2151 | emit_insn (&insn); | |
2152 | #endif /* OBJ_ECOFF || OBJ_ELF */ | |
2153 | } | |
2154 | ||
2155 | #ifdef OBJ_EVAX | |
2156 | ||
2157 | /* Add symbol+addend to link pool. | |
2158 | Return offset from basesym to entry in link pool. | |
2159 | ||
2160 | Add new fixup only if offset isn't 16bit. */ | |
2161 | ||
2162 | valueT | |
2163 | add_to_link_pool (basesym, sym, addend) | |
2164 | symbolS *basesym; | |
2165 | symbolS *sym; | |
2166 | offsetT addend; | |
2167 | { | |
2168 | segT current_section = now_seg; | |
2169 | int current_subsec = now_subseg; | |
2170 | valueT offset; | |
2171 | bfd_reloc_code_real_type reloc_type; | |
2172 | char *p; | |
2173 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
2174 | fixS *fixp; | |
2175 | ||
2176 | offset = -basesym->sy_obj; | |
2177 | ||
2178 | /* @@ This assumes all entries in a given section will be of the same | |
2179 | size... Probably correct, but unwise to rely on. */ | |
2180 | /* This must always be called with the same subsegment. */ | |
2181 | ||
2182 | if (seginfo->frchainP) | |
2183 | for (fixp = seginfo->frchainP->fix_root; | |
2184 | fixp != (fixS *) NULL; | |
2185 | fixp = fixp->fx_next, offset += 8) | |
2186 | { | |
2187 | if (fixp->fx_addsy == sym && fixp->fx_offset == addend) | |
2188 | { | |
2189 | if (range_signed_16 (offset)) | |
2190 | { | |
2191 | return offset; | |
2192 | } | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | /* Not found in 16bit signed range. */ | |
2197 | ||
2198 | subseg_set (alpha_link_section, 0); | |
2199 | p = frag_more (8); | |
2200 | memset (p, 0, 8); | |
2201 | ||
2202 | fix_new (frag_now, p - frag_now->fr_literal, 8, sym, addend, 0, | |
2203 | BFD_RELOC_64); | |
2204 | ||
2205 | subseg_set (current_section, current_subsec); | |
2206 | seginfo->literal_pool_size += 8; | |
2207 | return offset; | |
2208 | } | |
2209 | ||
2210 | #endif /* OBJ_EVAX */ | |
2211 | ||
2212 | /* Load a (partial) expression into a target register. | |
2213 | ||
2214 | If poffset is not null, after the call it will either contain | |
2215 | O_constant 0, or a 16-bit offset appropriate for any MEM format | |
2216 | instruction. In addition, pbasereg will be modified to point to | |
2217 | the base register to use in that MEM format instruction. | |
2218 | ||
2219 | In any case, *pbasereg should contain a base register to add to the | |
2220 | expression. This will normally be either AXP_REG_ZERO or | |
2221 | alpha_gp_register. Symbol addresses will always be loaded via $gp, | |
2222 | so "foo($0)" is interpreted as adding the address of foo to $0; | |
2223 | i.e. "ldq $targ, LIT($gp); addq $targ, $0, $targ". Odd, perhaps, | |
2224 | but this is what OSF/1 does. | |
2225 | ||
2226 | Finally, the return value is true if the calling macro may emit a | |
2227 | LITUSE reloc if otherwise appropriate. */ | |
2228 | ||
2229 | static int | |
2230 | load_expression (targreg, exp, pbasereg, poffset) | |
2231 | int targreg; | |
2232 | const expressionS *exp; | |
2233 | int *pbasereg; | |
2234 | expressionS *poffset; | |
2235 | { | |
2236 | int emit_lituse = 0; | |
2237 | offsetT addend = exp->X_add_number; | |
2238 | int basereg = *pbasereg; | |
2239 | struct alpha_insn insn; | |
2240 | expressionS newtok[3]; | |
2241 | ||
2242 | switch (exp->X_op) | |
2243 | { | |
2244 | case O_symbol: | |
2245 | { | |
2246 | #ifdef OBJ_ECOFF | |
2247 | offsetT lit; | |
2248 | ||
2249 | /* attempt to reduce .lit load by splitting the offset from | |
2250 | its symbol when possible, but don't create a situation in | |
2251 | which we'd fail. */ | |
2252 | if (!range_signed_32 (addend) && | |
2253 | (alpha_noat_on || targreg == AXP_REG_AT)) | |
2254 | { | |
2255 | lit = add_to_literal_pool (exp->X_add_symbol, addend, | |
2256 | alpha_lita_section, 8); | |
2257 | addend = 0; | |
2258 | } | |
2259 | else | |
2260 | { | |
2261 | lit = add_to_literal_pool (exp->X_add_symbol, 0, | |
2262 | alpha_lita_section, 8); | |
2263 | } | |
2264 | ||
2265 | if (lit >= 0x8000) | |
2266 | as_fatal (_("overflow in literal (.lita) table")); | |
2267 | ||
2268 | /* emit "ldq r, lit(gp)" */ | |
2269 | ||
2270 | if (basereg != alpha_gp_register && targreg == basereg) | |
2271 | { | |
2272 | if (alpha_noat_on) | |
2273 | as_bad (_("macro requires $at register while noat in effect")); | |
2274 | if (targreg == AXP_REG_AT) | |
2275 | as_bad (_("macro requires $at while $at in use")); | |
2276 | ||
2277 | set_tok_reg (newtok[0], AXP_REG_AT); | |
2278 | } | |
2279 | else | |
2280 | set_tok_reg (newtok[0], targreg); | |
2281 | set_tok_sym (newtok[1], alpha_lita_symbol, lit); | |
2282 | set_tok_preg (newtok[2], alpha_gp_register); | |
2283 | ||
2284 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2285 | ||
2286 | assert (insn.nfixups == 1); | |
2287 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL; | |
2288 | #endif /* OBJ_ECOFF */ | |
2289 | #ifdef OBJ_ELF | |
2290 | /* emit "ldq r, gotoff(gp)" */ | |
2291 | ||
2292 | if (basereg != alpha_gp_register && targreg == basereg) | |
2293 | { | |
2294 | if (alpha_noat_on) | |
2295 | as_bad (_("macro requires $at register while noat in effect")); | |
2296 | if (targreg == AXP_REG_AT) | |
2297 | as_bad (_("macro requires $at while $at in use")); | |
2298 | ||
2299 | set_tok_reg (newtok[0], AXP_REG_AT); | |
2300 | } | |
2301 | else | |
2302 | set_tok_reg (newtok[0], targreg); | |
2303 | ||
2304 | /* XXX: Disable this .got minimizing optimization so that we can get | |
2305 | better instruction offset knowledge in the compiler. This happens | |
2306 | very infrequently anyway. */ | |
2307 | if (1 || (!range_signed_32 (addend) | |
2308 | && (alpha_noat_on || targreg == AXP_REG_AT))) | |
2309 | { | |
2310 | newtok[1] = *exp; | |
2311 | addend = 0; | |
2312 | } | |
2313 | else | |
2314 | { | |
2315 | set_tok_sym (newtok[1], exp->X_add_symbol, 0); | |
2316 | } | |
2317 | ||
2318 | set_tok_preg (newtok[2], alpha_gp_register); | |
2319 | ||
2320 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2321 | ||
2322 | assert (insn.nfixups == 1); | |
2323 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL; | |
2324 | #endif /* OBJ_ELF */ | |
2325 | #ifdef OBJ_EVAX | |
2326 | offsetT link; | |
2327 | ||
2328 | /* Find symbol or symbol pointer in link section. */ | |
2329 | ||
2330 | if (exp->X_add_symbol == alpha_evax_proc.symbol) | |
2331 | { | |
2332 | if (range_signed_16 (addend)) | |
2333 | { | |
2334 | set_tok_reg (newtok[0], targreg); | |
2335 | set_tok_const (newtok[1], addend); | |
2336 | set_tok_preg (newtok[2], basereg); | |
2337 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
2338 | addend = 0; | |
2339 | } | |
2340 | else | |
2341 | { | |
2342 | set_tok_reg (newtok[0], targreg); | |
2343 | set_tok_const (newtok[1], 0); | |
2344 | set_tok_preg (newtok[2], basereg); | |
2345 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
2346 | } | |
2347 | } | |
2348 | else | |
2349 | { | |
2350 | if (!range_signed_32 (addend)) | |
2351 | { | |
2352 | link = add_to_link_pool (alpha_evax_proc.symbol, | |
2353 | exp->X_add_symbol, addend); | |
2354 | addend = 0; | |
2355 | } | |
2356 | else | |
2357 | { | |
2358 | link = add_to_link_pool (alpha_evax_proc.symbol, | |
2359 | exp->X_add_symbol, 0); | |
2360 | } | |
2361 | set_tok_reg (newtok[0], targreg); | |
2362 | set_tok_const (newtok[1], link); | |
2363 | set_tok_preg (newtok[2], basereg); | |
2364 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2365 | } | |
2366 | #endif /* OBJ_EVAX */ | |
2367 | ||
2368 | emit_insn(&insn); | |
2369 | ||
2370 | #ifndef OBJ_EVAX | |
2371 | emit_lituse = 1; | |
2372 | ||
2373 | if (basereg != alpha_gp_register && basereg != AXP_REG_ZERO) | |
2374 | { | |
2375 | /* emit "addq r, base, r" */ | |
2376 | ||
2377 | set_tok_reg (newtok[1], basereg); | |
2378 | set_tok_reg (newtok[2], targreg); | |
2379 | assemble_tokens ("addq", newtok, 3, 0); | |
2380 | } | |
2381 | #endif | |
2382 | ||
2383 | basereg = targreg; | |
2384 | } | |
2385 | break; | |
2386 | ||
2387 | case O_constant: | |
2388 | break; | |
2389 | ||
2390 | case O_subtract: | |
2391 | /* Assume that this difference expression will be resolved to an | |
2392 | absolute value and that that value will fit in 16 bits. */ | |
2393 | ||
2394 | set_tok_reg (newtok[0], targreg); | |
2395 | newtok[1] = *exp; | |
2396 | set_tok_preg (newtok[2], basereg); | |
2397 | assemble_tokens ("lda", newtok, 3, 0); | |
2398 | ||
2399 | if (poffset) | |
2400 | set_tok_const (*poffset, 0); | |
2401 | return 0; | |
2402 | ||
2403 | case O_big: | |
2404 | if (exp->X_add_number > 0) | |
2405 | as_bad (_("bignum invalid; zero assumed")); | |
2406 | else | |
2407 | as_bad (_("floating point number invalid; zero assumed")); | |
2408 | addend = 0; | |
2409 | break; | |
2410 | ||
2411 | default: | |
2412 | as_bad (_("can't handle expression")); | |
2413 | addend = 0; | |
2414 | break; | |
2415 | } | |
2416 | ||
2417 | if (!range_signed_32 (addend)) | |
2418 | { | |
2419 | offsetT lit; | |
2420 | ||
2421 | /* for 64-bit addends, just put it in the literal pool */ | |
2422 | ||
2423 | #ifdef OBJ_EVAX | |
2424 | /* emit "ldq targreg, lit(basereg)" */ | |
2425 | lit = add_to_link_pool (alpha_evax_proc.symbol, | |
2426 | section_symbol (absolute_section), addend); | |
2427 | set_tok_reg (newtok[0], targreg); | |
2428 | set_tok_const (newtok[1], lit); | |
2429 | set_tok_preg (newtok[2], alpha_gp_register); | |
2430 | assemble_tokens ("ldq", newtok, 3, 0); | |
2431 | #else | |
2432 | ||
2433 | if (alpha_lit8_section == NULL) | |
2434 | { | |
2435 | create_literal_section (".lit8", | |
2436 | &alpha_lit8_section, | |
2437 | &alpha_lit8_symbol); | |
2438 | ||
2439 | #ifdef OBJ_ECOFF | |
2440 | alpha_lit8_literal = add_to_literal_pool (alpha_lit8_symbol, 0x8000, | |
2441 | alpha_lita_section, 8); | |
2442 | if (alpha_lit8_literal >= 0x8000) | |
2443 | as_fatal (_("overflow in literal (.lita) table")); | |
2444 | #endif | |
2445 | } | |
2446 | ||
2447 | lit = add_to_literal_pool (NULL, addend, alpha_lit8_section, 8) - 0x8000; | |
2448 | if (lit >= 0x8000) | |
2449 | as_fatal (_("overflow in literal (.lit8) table")); | |
2450 | ||
2451 | /* emit "lda litreg, .lit8+0x8000" */ | |
2452 | ||
2453 | if (targreg == basereg) | |
2454 | { | |
2455 | if (alpha_noat_on) | |
2456 | as_bad (_("macro requires $at register while noat in effect")); | |
2457 | if (targreg == AXP_REG_AT) | |
2458 | as_bad (_("macro requires $at while $at in use")); | |
2459 | ||
2460 | set_tok_reg (newtok[0], AXP_REG_AT); | |
2461 | } | |
2462 | else | |
2463 | set_tok_reg (newtok[0], targreg); | |
2464 | #ifdef OBJ_ECOFF | |
2465 | set_tok_sym (newtok[1], alpha_lita_symbol, alpha_lit8_literal); | |
2466 | #endif | |
2467 | #ifdef OBJ_ELF | |
2468 | set_tok_sym (newtok[1], alpha_lit8_symbol, 0x8000); | |
2469 | #endif | |
2470 | set_tok_preg (newtok[2], alpha_gp_register); | |
2471 | ||
2472 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2473 | ||
2474 | assert (insn.nfixups == 1); | |
2475 | #ifdef OBJ_ECOFF | |
2476 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL; | |
2477 | #endif | |
2478 | #ifdef OBJ_ELF | |
2479 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL; | |
2480 | #endif | |
2481 | ||
2482 | emit_insn (&insn); | |
2483 | ||
2484 | /* emit "ldq litreg, lit(litreg)" */ | |
2485 | ||
2486 | set_tok_const (newtok[1], lit); | |
2487 | set_tok_preg (newtok[2], newtok[0].X_add_number); | |
2488 | ||
2489 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2490 | ||
2491 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2492 | if (insn.nfixups > 0) | |
2493 | { | |
2494 | memmove (&insn.fixups[1], &insn.fixups[0], | |
2495 | sizeof(struct alpha_fixup) * insn.nfixups); | |
2496 | } | |
2497 | insn.nfixups++; | |
2498 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
2499 | insn.fixups[0].exp.X_op = O_symbol; |
2500 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
252b5132 RH |
2501 | insn.fixups[0].exp.X_add_number = 1; |
2502 | emit_lituse = 0; | |
2503 | ||
2504 | emit_insn (&insn); | |
2505 | ||
2506 | /* emit "addq litreg, base, target" */ | |
2507 | ||
2508 | if (basereg != AXP_REG_ZERO) | |
2509 | { | |
2510 | set_tok_reg (newtok[1], basereg); | |
2511 | set_tok_reg (newtok[2], targreg); | |
2512 | assemble_tokens ("addq", newtok, 3, 0); | |
2513 | } | |
2514 | #endif /* !OBJ_EVAX */ | |
2515 | ||
2516 | if (poffset) | |
2517 | set_tok_const (*poffset, 0); | |
2518 | *pbasereg = targreg; | |
2519 | } | |
2520 | else | |
2521 | { | |
2522 | offsetT low, high, extra, tmp; | |
2523 | ||
2524 | /* for 32-bit operands, break up the addend */ | |
2525 | ||
2526 | low = sign_extend_16 (addend); | |
2527 | tmp = addend - low; | |
2528 | high = sign_extend_16 (tmp >> 16); | |
2529 | ||
2530 | if (tmp - (high << 16)) | |
2531 | { | |
2532 | extra = 0x4000; | |
2533 | tmp -= 0x40000000; | |
2534 | high = sign_extend_16 (tmp >> 16); | |
2535 | } | |
2536 | else | |
2537 | extra = 0; | |
2538 | ||
2539 | set_tok_reg (newtok[0], targreg); | |
2540 | set_tok_preg (newtok[2], basereg); | |
2541 | ||
2542 | if (extra) | |
2543 | { | |
2544 | /* emit "ldah r, extra(r) */ | |
2545 | set_tok_const (newtok[1], extra); | |
2546 | assemble_tokens ("ldah", newtok, 3, 0); | |
2547 | set_tok_preg (newtok[2], basereg = targreg); | |
2548 | } | |
2549 | ||
2550 | if (high) | |
2551 | { | |
2552 | /* emit "ldah r, high(r) */ | |
2553 | set_tok_const (newtok[1], high); | |
2554 | assemble_tokens ("ldah", newtok, 3, 0); | |
2555 | basereg = targreg; | |
2556 | set_tok_preg (newtok[2], basereg); | |
2557 | } | |
2558 | ||
2559 | if ((low && !poffset) || (!poffset && basereg != targreg)) | |
2560 | { | |
2561 | /* emit "lda r, low(base)" */ | |
2562 | set_tok_const (newtok[1], low); | |
2563 | assemble_tokens ("lda", newtok, 3, 0); | |
2564 | basereg = targreg; | |
2565 | low = 0; | |
2566 | } | |
2567 | ||
2568 | if (poffset) | |
2569 | set_tok_const (*poffset, low); | |
2570 | *pbasereg = basereg; | |
2571 | } | |
2572 | ||
2573 | return emit_lituse; | |
2574 | } | |
2575 | ||
2576 | /* The lda macro differs from the lda instruction in that it handles | |
2577 | most simple expressions, particualrly symbol address loads and | |
2578 | large constants. */ | |
2579 | ||
2580 | static void | |
2581 | emit_lda (tok, ntok, unused) | |
2582 | const expressionS *tok; | |
2583 | int ntok; | |
2584 | const PTR unused; | |
2585 | { | |
2586 | int basereg; | |
2587 | ||
2588 | if (ntok == 2) | |
2589 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
2590 | else | |
2591 | basereg = tok[2].X_add_number; | |
2592 | ||
2593 | (void) load_expression (tok[0].X_add_number, &tok[1], &basereg, NULL); | |
2594 | } | |
2595 | ||
2596 | /* The ldah macro differs from the ldah instruction in that it has $31 | |
2597 | as an implied base register. */ | |
2598 | ||
2599 | static void | |
2600 | emit_ldah (tok, ntok, unused) | |
2601 | const expressionS *tok; | |
2602 | int ntok; | |
2603 | const PTR unused; | |
2604 | { | |
2605 | expressionS newtok[3]; | |
2606 | ||
2607 | newtok[0] = tok[0]; | |
2608 | newtok[1] = tok[1]; | |
2609 | set_tok_preg (newtok[2], AXP_REG_ZERO); | |
2610 | ||
2611 | assemble_tokens ("ldah", newtok, 3, 0); | |
2612 | } | |
2613 | ||
2614 | /* Handle all "simple" integer register loads -- ldq, ldq_l, ldq_u, | |
2615 | etc. They differ from the real instructions in that they do simple | |
2616 | expressions like the lda macro. */ | |
2617 | ||
2618 | static void | |
2619 | emit_ir_load (tok, ntok, opname) | |
2620 | const expressionS *tok; | |
2621 | int ntok; | |
2622 | const PTR opname; | |
2623 | { | |
2624 | int basereg, lituse; | |
2625 | expressionS newtok[3]; | |
2626 | struct alpha_insn insn; | |
2627 | ||
2628 | if (ntok == 2) | |
2629 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
2630 | else | |
2631 | basereg = tok[2].X_add_number; | |
2632 | ||
2633 | lituse = load_expression (tok[0].X_add_number, &tok[1], &basereg, | |
2634 | &newtok[1]); | |
2635 | ||
2636 | newtok[0] = tok[0]; | |
2637 | set_tok_preg (newtok[2], basereg); | |
2638 | ||
2639 | assemble_tokens_to_insn ((const char *)opname, newtok, 3, &insn); | |
2640 | ||
2641 | if (lituse) | |
2642 | { | |
2643 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2644 | if (insn.nfixups > 0) | |
2645 | { | |
2646 | memmove (&insn.fixups[1], &insn.fixups[0], | |
2647 | sizeof(struct alpha_fixup) * insn.nfixups); | |
2648 | } | |
2649 | insn.nfixups++; | |
2650 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
2651 | insn.fixups[0].exp.X_op = O_symbol; |
2652 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
252b5132 RH |
2653 | insn.fixups[0].exp.X_add_number = 1; |
2654 | } | |
2655 | ||
2656 | emit_insn (&insn); | |
2657 | } | |
2658 | ||
2659 | /* Handle fp register loads, and both integer and fp register stores. | |
2660 | Again, we handle simple expressions. */ | |
2661 | ||
2662 | static void | |
2663 | emit_loadstore (tok, ntok, opname) | |
2664 | const expressionS *tok; | |
2665 | int ntok; | |
2666 | const PTR opname; | |
2667 | { | |
2668 | int basereg, lituse; | |
2669 | expressionS newtok[3]; | |
2670 | struct alpha_insn insn; | |
2671 | ||
2672 | if (ntok == 2) | |
2673 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
2674 | else | |
2675 | basereg = tok[2].X_add_number; | |
2676 | ||
2677 | if (tok[1].X_op != O_constant || !range_signed_16(tok[1].X_add_number)) | |
2678 | { | |
2679 | if (alpha_noat_on) | |
2680 | as_bad (_("macro requires $at register while noat in effect")); | |
2681 | ||
2682 | lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, &newtok[1]); | |
2683 | } | |
2684 | else | |
2685 | { | |
2686 | newtok[1] = tok[1]; | |
2687 | lituse = 0; | |
2688 | } | |
2689 | ||
2690 | newtok[0] = tok[0]; | |
2691 | set_tok_preg (newtok[2], basereg); | |
2692 | ||
2693 | assemble_tokens_to_insn ((const char *)opname, newtok, 3, &insn); | |
2694 | ||
2695 | if (lituse) | |
2696 | { | |
2697 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
2698 | if (insn.nfixups > 0) | |
2699 | { | |
2700 | memmove (&insn.fixups[1], &insn.fixups[0], | |
2701 | sizeof(struct alpha_fixup) * insn.nfixups); | |
2702 | } | |
2703 | insn.nfixups++; | |
2704 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
2705 | insn.fixups[0].exp.X_op = O_symbol; |
2706 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
252b5132 RH |
2707 | insn.fixups[0].exp.X_add_number = 1; |
2708 | } | |
2709 | ||
2710 | emit_insn (&insn); | |
2711 | } | |
2712 | ||
2713 | /* Load a half-word or byte as an unsigned value. */ | |
2714 | ||
2715 | static void | |
2716 | emit_ldXu (tok, ntok, vlgsize) | |
2717 | const expressionS *tok; | |
2718 | int ntok; | |
2719 | const PTR vlgsize; | |
2720 | { | |
2721 | if (alpha_target & AXP_OPCODE_BWX) | |
2722 | emit_ir_load (tok, ntok, ldXu_op[(long)vlgsize]); | |
2723 | else | |
2724 | { | |
2725 | expressionS newtok[3]; | |
2726 | ||
2727 | if (alpha_noat_on) | |
2728 | as_bad (_("macro requires $at register while noat in effect")); | |
2729 | ||
2730 | /* emit "lda $at, exp" */ | |
2731 | ||
2732 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
2733 | newtok[0].X_add_number = AXP_REG_AT; | |
2734 | assemble_tokens ("lda", newtok, ntok, 1); | |
2735 | ||
2736 | /* emit "ldq_u targ, 0($at)" */ | |
2737 | ||
2738 | newtok[0] = tok[0]; | |
2739 | set_tok_const (newtok[1], 0); | |
2740 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2741 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
2742 | ||
2743 | /* emit "extXl targ, $at, targ" */ | |
2744 | ||
2745 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2746 | newtok[2] = newtok[0]; | |
2747 | assemble_tokens (extXl_op[(long)vlgsize], newtok, 3, 1); | |
2748 | } | |
2749 | } | |
2750 | ||
2751 | /* Load a half-word or byte as a signed value. */ | |
2752 | ||
2753 | static void | |
2754 | emit_ldX (tok, ntok, vlgsize) | |
2755 | const expressionS *tok; | |
2756 | int ntok; | |
2757 | const PTR vlgsize; | |
2758 | { | |
2759 | emit_ldXu (tok, ntok, vlgsize); | |
2760 | assemble_tokens (sextX_op[(long)vlgsize], tok, 1, 1); | |
2761 | } | |
2762 | ||
2763 | /* Load an integral value from an unaligned address as an unsigned | |
2764 | value. */ | |
2765 | ||
2766 | static void | |
2767 | emit_uldXu (tok, ntok, vlgsize) | |
2768 | const expressionS *tok; | |
2769 | int ntok; | |
2770 | const PTR vlgsize; | |
2771 | { | |
2772 | long lgsize = (long)vlgsize; | |
2773 | expressionS newtok[3]; | |
2774 | ||
2775 | if (alpha_noat_on) | |
2776 | as_bad (_("macro requires $at register while noat in effect")); | |
2777 | ||
2778 | /* emit "lda $at, exp" */ | |
2779 | ||
2780 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
2781 | newtok[0].X_add_number = AXP_REG_AT; | |
2782 | assemble_tokens ("lda", newtok, ntok, 1); | |
2783 | ||
2784 | /* emit "ldq_u $t9, 0($at)" */ | |
2785 | ||
2786 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2787 | set_tok_const (newtok[1], 0); | |
2788 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2789 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
2790 | ||
2791 | /* emit "ldq_u $t10, size-1($at)" */ | |
2792 | ||
2793 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2794 | set_tok_const (newtok[1], (1<<lgsize)-1); | |
2795 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
2796 | ||
2797 | /* emit "extXl $t9, $at, $t9" */ | |
2798 | ||
2799 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2800 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2801 | set_tok_reg (newtok[2], AXP_REG_T9); | |
2802 | assemble_tokens (extXl_op[lgsize], newtok, 3, 1); | |
2803 | ||
2804 | /* emit "extXh $t10, $at, $t10" */ | |
2805 | ||
2806 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2807 | set_tok_reg (newtok[2], AXP_REG_T10); | |
2808 | assemble_tokens (extXh_op[lgsize], newtok, 3, 1); | |
2809 | ||
2810 | /* emit "or $t9, $t10, targ" */ | |
2811 | ||
2812 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2813 | set_tok_reg (newtok[1], AXP_REG_T10); | |
2814 | newtok[2] = tok[0]; | |
2815 | assemble_tokens ("or", newtok, 3, 1); | |
2816 | } | |
2817 | ||
2818 | /* Load an integral value from an unaligned address as a signed value. | |
2819 | Note that quads should get funneled to the unsigned load since we | |
2820 | don't have to do the sign extension. */ | |
2821 | ||
2822 | static void | |
2823 | emit_uldX (tok, ntok, vlgsize) | |
2824 | const expressionS *tok; | |
2825 | int ntok; | |
2826 | const PTR vlgsize; | |
2827 | { | |
2828 | emit_uldXu (tok, ntok, vlgsize); | |
2829 | assemble_tokens (sextX_op[(long)vlgsize], tok, 1, 1); | |
2830 | } | |
2831 | ||
2832 | /* Implement the ldil macro. */ | |
2833 | ||
2834 | static void | |
2835 | emit_ldil (tok, ntok, unused) | |
2836 | const expressionS *tok; | |
2837 | int ntok; | |
2838 | const PTR unused; | |
2839 | { | |
2840 | expressionS newtok[2]; | |
2841 | ||
2842 | memcpy (newtok, tok, sizeof(newtok)); | |
2843 | newtok[1].X_add_number = sign_extend_32 (tok[1].X_add_number); | |
2844 | ||
2845 | assemble_tokens ("lda", newtok, ntok, 1); | |
2846 | } | |
2847 | ||
2848 | /* Store a half-word or byte. */ | |
2849 | ||
2850 | static void | |
2851 | emit_stX (tok, ntok, vlgsize) | |
2852 | const expressionS *tok; | |
2853 | int ntok; | |
2854 | const PTR vlgsize; | |
2855 | { | |
2856 | int lgsize = (int)(long)vlgsize; | |
2857 | ||
2858 | if (alpha_target & AXP_OPCODE_BWX) | |
2859 | emit_loadstore (tok, ntok, stX_op[lgsize]); | |
2860 | else | |
2861 | { | |
2862 | expressionS newtok[3]; | |
2863 | ||
2864 | if (alpha_noat_on) | |
2865 | as_bad(_("macro requires $at register while noat in effect")); | |
2866 | ||
2867 | /* emit "lda $at, exp" */ | |
2868 | ||
2869 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
2870 | newtok[0].X_add_number = AXP_REG_AT; | |
2871 | assemble_tokens ("lda", newtok, ntok, 1); | |
2872 | ||
2873 | /* emit "ldq_u $t9, 0($at)" */ | |
2874 | ||
2875 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2876 | set_tok_const (newtok[1], 0); | |
2877 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2878 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
2879 | ||
2880 | /* emit "insXl src, $at, $t10" */ | |
2881 | ||
2882 | newtok[0] = tok[0]; | |
2883 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2884 | set_tok_reg (newtok[2], AXP_REG_T10); | |
2885 | assemble_tokens (insXl_op[lgsize], newtok, 3, 1); | |
2886 | ||
2887 | /* emit "mskXl $t9, $at, $t9" */ | |
2888 | ||
2889 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2890 | newtok[2] = newtok[0]; | |
2891 | assemble_tokens (mskXl_op[lgsize], newtok, 3, 1); | |
2892 | ||
2893 | /* emit "or $t9, $t10, $t9" */ | |
2894 | ||
2895 | set_tok_reg (newtok[1], AXP_REG_T10); | |
2896 | assemble_tokens ("or", newtok, 3, 1); | |
2897 | ||
2898 | /* emit "stq_u $t9, 0($at) */ | |
2899 | ||
2900 | set_tok_const (newtok[1], 0); | |
2901 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2902 | assemble_tokens ("stq_u", newtok, 3, 1); | |
2903 | } | |
2904 | } | |
2905 | ||
2906 | /* Store an integer to an unaligned address. */ | |
2907 | ||
2908 | static void | |
2909 | emit_ustX (tok, ntok, vlgsize) | |
2910 | const expressionS *tok; | |
2911 | int ntok; | |
2912 | const PTR vlgsize; | |
2913 | { | |
2914 | int lgsize = (int)(long)vlgsize; | |
2915 | expressionS newtok[3]; | |
2916 | ||
2917 | /* emit "lda $at, exp" */ | |
2918 | ||
2919 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
2920 | newtok[0].X_add_number = AXP_REG_AT; | |
2921 | assemble_tokens ("lda", newtok, ntok, 1); | |
2922 | ||
2923 | /* emit "ldq_u $9, 0($at)" */ | |
2924 | ||
2925 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2926 | set_tok_const (newtok[1], 0); | |
2927 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2928 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
2929 | ||
2930 | /* emit "ldq_u $10, size-1($at)" */ | |
2931 | ||
2932 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2933 | set_tok_const (newtok[1], (1 << lgsize)-1); | |
2934 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
2935 | ||
2936 | /* emit "insXl src, $at, $t11" */ | |
2937 | ||
2938 | newtok[0] = tok[0]; | |
2939 | set_tok_reg (newtok[1], AXP_REG_AT); | |
2940 | set_tok_reg (newtok[2], AXP_REG_T11); | |
2941 | assemble_tokens (insXl_op[lgsize], newtok, 3, 1); | |
2942 | ||
2943 | /* emit "insXh src, $at, $t12" */ | |
2944 | ||
2945 | set_tok_reg (newtok[2], AXP_REG_T12); | |
2946 | assemble_tokens (insXh_op[lgsize], newtok, 3, 1); | |
2947 | ||
2948 | /* emit "mskXl $t9, $at, $t9" */ | |
2949 | ||
2950 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2951 | newtok[2] = newtok[0]; | |
2952 | assemble_tokens (mskXl_op[lgsize], newtok, 3, 1); | |
2953 | ||
2954 | /* emit "mskXh $t10, $at, $t10" */ | |
2955 | ||
2956 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2957 | newtok[2] = newtok[0]; | |
2958 | assemble_tokens (mskXh_op[lgsize], newtok, 3, 1); | |
2959 | ||
2960 | /* emit "or $t9, $t11, $t9" */ | |
2961 | ||
2962 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2963 | set_tok_reg (newtok[1], AXP_REG_T11); | |
2964 | newtok[2] = newtok[0]; | |
2965 | assemble_tokens ("or", newtok, 3, 1); | |
2966 | ||
2967 | /* emit "or $t10, $t12, $t10" */ | |
2968 | ||
2969 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2970 | set_tok_reg (newtok[1], AXP_REG_T12); | |
2971 | newtok[2] = newtok[0]; | |
2972 | assemble_tokens ("or", newtok, 3, 1); | |
2973 | ||
2974 | /* emit "stq_u $t9, 0($at)" */ | |
2975 | ||
2976 | set_tok_reg (newtok[0], AXP_REG_T9); | |
2977 | set_tok_const (newtok[1], 0); | |
2978 | set_tok_preg (newtok[2], AXP_REG_AT); | |
2979 | assemble_tokens ("stq_u", newtok, 3, 1); | |
2980 | ||
2981 | /* emit "stq_u $t10, size-1($at)" */ | |
2982 | ||
2983 | set_tok_reg (newtok[0], AXP_REG_T10); | |
2984 | set_tok_const (newtok[1], (1 << lgsize)-1); | |
2985 | assemble_tokens ("stq_u", newtok, 3, 1); | |
2986 | } | |
2987 | ||
2988 | /* Sign extend a half-word or byte. The 32-bit sign extend is | |
2989 | implemented as "addl $31, $r, $t" in the opcode table. */ | |
2990 | ||
2991 | static void | |
2992 | emit_sextX (tok, ntok, vlgsize) | |
2993 | const expressionS *tok; | |
2994 | int ntok; | |
2995 | const PTR vlgsize; | |
2996 | { | |
2997 | long lgsize = (long)vlgsize; | |
2998 | ||
2999 | if (alpha_target & AXP_OPCODE_BWX) | |
3000 | assemble_tokens (sextX_op[lgsize], tok, ntok, 0); | |
3001 | else | |
3002 | { | |
3003 | int bitshift = 64 - 8 * (1 << lgsize); | |
3004 | expressionS newtok[3]; | |
3005 | ||
3006 | /* emit "sll src,bits,dst" */ | |
3007 | ||
3008 | newtok[0] = tok[0]; | |
3009 | set_tok_const (newtok[1], bitshift); | |
3010 | newtok[2] = tok[ntok - 1]; | |
3011 | assemble_tokens ("sll", newtok, 3, 1); | |
3012 | ||
3013 | /* emit "sra dst,bits,dst" */ | |
3014 | ||
3015 | newtok[0] = newtok[2]; | |
3016 | assemble_tokens ("sra", newtok, 3, 1); | |
3017 | } | |
3018 | } | |
3019 | ||
3020 | /* Implement the division and modulus macros. */ | |
3021 | ||
3022 | #ifdef OBJ_EVAX | |
3023 | ||
3024 | /* Make register usage like in normal procedure call. | |
3025 | Don't clobber PV and RA. */ | |
3026 | ||
3027 | static void | |
3028 | emit_division (tok, ntok, symname) | |
3029 | const expressionS *tok; | |
3030 | int ntok; | |
3031 | const PTR symname; | |
3032 | { | |
3033 | /* DIVISION and MODULUS. Yech. | |
3034 | * | |
3035 | * Convert | |
3036 | * OP x,y,result | |
3037 | * to | |
3038 | * mov x,R16 # if x != R16 | |
3039 | * mov y,R17 # if y != R17 | |
3040 | * lda AT,__OP | |
3041 | * jsr AT,(AT),0 | |
3042 | * mov R0,result | |
3043 | * | |
3044 | * with appropriate optimizations if R0,R16,R17 are the registers | |
3045 | * specified by the compiler. | |
3046 | */ | |
3047 | ||
3048 | int xr, yr, rr; | |
3049 | symbolS *sym; | |
3050 | expressionS newtok[3]; | |
3051 | ||
3052 | xr = regno (tok[0].X_add_number); | |
3053 | yr = regno (tok[1].X_add_number); | |
3054 | ||
3055 | if (ntok < 3) | |
3056 | rr = xr; | |
3057 | else | |
3058 | rr = regno (tok[2].X_add_number); | |
3059 | ||
3060 | /* Move the operands into the right place */ | |
3061 | if (yr == AXP_REG_R16 && xr == AXP_REG_R17) | |
3062 | { | |
3063 | /* They are in exactly the wrong order -- swap through AT */ | |
3064 | ||
3065 | if (alpha_noat_on) | |
3066 | as_bad (_("macro requires $at register while noat in effect")); | |
3067 | ||
3068 | set_tok_reg (newtok[0], AXP_REG_R16); | |
3069 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3070 | assemble_tokens ("mov", newtok, 2, 1); | |
3071 | ||
3072 | set_tok_reg (newtok[0], AXP_REG_R17); | |
3073 | set_tok_reg (newtok[1], AXP_REG_R16); | |
3074 | assemble_tokens ("mov", newtok, 2, 1); | |
3075 | ||
3076 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3077 | set_tok_reg (newtok[1], AXP_REG_R17); | |
3078 | assemble_tokens ("mov", newtok, 2, 1); | |
3079 | } | |
3080 | else | |
3081 | { | |
3082 | if (yr == AXP_REG_R16) | |
3083 | { | |
3084 | set_tok_reg (newtok[0], AXP_REG_R16); | |
3085 | set_tok_reg (newtok[1], AXP_REG_R17); | |
3086 | assemble_tokens ("mov", newtok, 2, 1); | |
3087 | } | |
3088 | ||
3089 | if (xr != AXP_REG_R16) | |
3090 | { | |
3091 | set_tok_reg (newtok[0], xr); | |
3092 | set_tok_reg (newtok[1], AXP_REG_R16); | |
3093 | assemble_tokens ("mov", newtok, 2, 1); | |
3094 | } | |
3095 | ||
3096 | if (yr != AXP_REG_R16 && yr != AXP_REG_R17) | |
3097 | { | |
3098 | set_tok_reg (newtok[0], yr); | |
3099 | set_tok_reg (newtok[1], AXP_REG_R17); | |
3100 | assemble_tokens ("mov", newtok, 2, 1); | |
3101 | } | |
3102 | } | |
3103 | ||
3104 | sym = symbol_find_or_make ((const char *)symname); | |
3105 | ||
3106 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3107 | set_tok_sym (newtok[1], sym, 0); | |
3108 | assemble_tokens ("lda", newtok, 2, 1); | |
3109 | ||
3110 | /* Call the division routine */ | |
3111 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3112 | set_tok_cpreg (newtok[1], AXP_REG_AT); | |
3113 | set_tok_const (newtok[2], 0); | |
3114 | assemble_tokens ("jsr", newtok, 3, 1); | |
3115 | ||
3116 | /* Move the result to the right place */ | |
3117 | if (rr != AXP_REG_R0) | |
3118 | { | |
3119 | set_tok_reg (newtok[0], AXP_REG_R0); | |
3120 | set_tok_reg (newtok[1], rr); | |
3121 | assemble_tokens ("mov", newtok, 2, 1); | |
3122 | } | |
3123 | } | |
3124 | ||
3125 | #else /* !OBJ_EVAX */ | |
3126 | ||
3127 | static void | |
3128 | emit_division (tok, ntok, symname) | |
3129 | const expressionS *tok; | |
3130 | int ntok; | |
3131 | const PTR symname; | |
3132 | { | |
3133 | /* DIVISION and MODULUS. Yech. | |
3134 | * Convert | |
3135 | * OP x,y,result | |
3136 | * to | |
3137 | * lda pv,__OP | |
3138 | * mov x,t10 | |
3139 | * mov y,t11 | |
3140 | * jsr t9,(pv),__OP | |
3141 | * mov t12,result | |
3142 | * | |
3143 | * with appropriate optimizations if t10,t11,t12 are the registers | |
3144 | * specified by the compiler. | |
3145 | */ | |
3146 | ||
3147 | int xr, yr, rr; | |
3148 | symbolS *sym; | |
3149 | expressionS newtok[3]; | |
3150 | ||
3151 | xr = regno (tok[0].X_add_number); | |
3152 | yr = regno (tok[1].X_add_number); | |
3153 | ||
3154 | if (ntok < 3) | |
3155 | rr = xr; | |
3156 | else | |
3157 | rr = regno (tok[2].X_add_number); | |
3158 | ||
3159 | sym = symbol_find_or_make ((const char *)symname); | |
3160 | ||
3161 | /* Move the operands into the right place */ | |
3162 | if (yr == AXP_REG_T10 && xr == AXP_REG_T11) | |
3163 | { | |
3164 | /* They are in exactly the wrong order -- swap through AT */ | |
3165 | ||
3166 | if (alpha_noat_on) | |
3167 | as_bad (_("macro requires $at register while noat in effect")); | |
3168 | ||
3169 | set_tok_reg (newtok[0], AXP_REG_T10); | |
3170 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3171 | assemble_tokens ("mov", newtok, 2, 1); | |
3172 | ||
3173 | set_tok_reg (newtok[0], AXP_REG_T11); | |
3174 | set_tok_reg (newtok[1], AXP_REG_T10); | |
3175 | assemble_tokens ("mov", newtok, 2, 1); | |
3176 | ||
3177 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3178 | set_tok_reg (newtok[1], AXP_REG_T11); | |
3179 | assemble_tokens ("mov", newtok, 2, 1); | |
3180 | } | |
3181 | else | |
3182 | { | |
3183 | if (yr == AXP_REG_T10) | |
3184 | { | |
3185 | set_tok_reg (newtok[0], AXP_REG_T10); | |
3186 | set_tok_reg (newtok[1], AXP_REG_T11); | |
3187 | assemble_tokens ("mov", newtok, 2, 1); | |
3188 | } | |
3189 | ||
3190 | if (xr != AXP_REG_T10) | |
3191 | { | |
3192 | set_tok_reg (newtok[0], xr); | |
3193 | set_tok_reg (newtok[1], AXP_REG_T10); | |
3194 | assemble_tokens ("mov", newtok, 2, 1); | |
3195 | } | |
3196 | ||
3197 | if (yr != AXP_REG_T10 && yr != AXP_REG_T11) | |
3198 | { | |
3199 | set_tok_reg (newtok[0], yr); | |
3200 | set_tok_reg (newtok[1], AXP_REG_T11); | |
3201 | assemble_tokens ("mov", newtok, 2, 1); | |
3202 | } | |
3203 | } | |
3204 | ||
3205 | /* Call the division routine */ | |
3206 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3207 | set_tok_sym (newtok[1], sym, 0); | |
3208 | assemble_tokens ("jsr", newtok, 2, 1); | |
3209 | ||
3210 | /* Reload the GP register */ | |
3211 | #ifdef OBJ_AOUT | |
3212 | FIXME | |
3213 | #endif | |
3214 | #if defined(OBJ_ECOFF) || defined(OBJ_ELF) | |
3215 | set_tok_reg (newtok[0], alpha_gp_register); | |
3216 | set_tok_const (newtok[1], 0); | |
3217 | set_tok_preg (newtok[2], AXP_REG_T9); | |
3218 | assemble_tokens ("ldgp", newtok, 3, 1); | |
3219 | #endif | |
3220 | ||
3221 | /* Move the result to the right place */ | |
3222 | if (rr != AXP_REG_T12) | |
3223 | { | |
3224 | set_tok_reg (newtok[0], AXP_REG_T12); | |
3225 | set_tok_reg (newtok[1], rr); | |
3226 | assemble_tokens ("mov", newtok, 2, 1); | |
3227 | } | |
3228 | } | |
3229 | ||
3230 | #endif /* !OBJ_EVAX */ | |
3231 | ||
3232 | /* The jsr and jmp macros differ from their instruction counterparts | |
3233 | in that they can load the target address and default most | |
3234 | everything. */ | |
3235 | ||
3236 | static void | |
3237 | emit_jsrjmp (tok, ntok, vopname) | |
3238 | const expressionS *tok; | |
3239 | int ntok; | |
3240 | const PTR vopname; | |
3241 | { | |
3242 | const char *opname = (const char *) vopname; | |
3243 | struct alpha_insn insn; | |
3244 | expressionS newtok[3]; | |
3245 | int r, tokidx = 0, lituse = 0; | |
3246 | ||
3247 | if (tokidx < ntok && tok[tokidx].X_op == O_register) | |
3248 | r = regno (tok[tokidx++].X_add_number); | |
3249 | else | |
3250 | r = strcmp (opname, "jmp") == 0 ? AXP_REG_ZERO : AXP_REG_RA; | |
3251 | ||
3252 | set_tok_reg (newtok[0], r); | |
3253 | ||
3254 | if (tokidx < ntok && | |
3255 | (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister)) | |
3256 | r = regno (tok[tokidx++].X_add_number); | |
3257 | #ifdef OBJ_EVAX | |
3258 | /* keep register if jsr $n.<sym> */ | |
3259 | #else | |
3260 | else | |
3261 | { | |
3262 | int basereg = alpha_gp_register; | |
3263 | lituse = load_expression (r = AXP_REG_PV, &tok[tokidx], &basereg, NULL); | |
3264 | } | |
3265 | #endif | |
3266 | ||
3267 | set_tok_cpreg (newtok[1], r); | |
3268 | ||
3269 | #ifdef OBJ_EVAX | |
3270 | /* FIXME: Add hint relocs to BFD for evax. */ | |
3271 | #else | |
3272 | if (tokidx < ntok) | |
3273 | newtok[2] = tok[tokidx]; | |
3274 | else | |
3275 | #endif | |
3276 | set_tok_const (newtok[2], 0); | |
3277 | ||
3278 | assemble_tokens_to_insn (opname, newtok, 3, &insn); | |
3279 | ||
3280 | /* add the LITUSE fixup */ | |
3281 | if (lituse) | |
3282 | { | |
3283 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
3284 | if (insn.nfixups > 0) | |
3285 | { | |
3286 | memmove (&insn.fixups[1], &insn.fixups[0], | |
3287 | sizeof(struct alpha_fixup) * insn.nfixups); | |
3288 | } | |
3289 | insn.nfixups++; | |
3290 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
3291 | insn.fixups[0].exp.X_op = O_symbol; |
3292 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
252b5132 RH |
3293 | insn.fixups[0].exp.X_add_number = 3; |
3294 | } | |
3295 | ||
3296 | emit_insn (&insn); | |
3297 | } | |
3298 | ||
3299 | /* The ret and jcr instructions differ from their instruction | |
3300 | counterparts in that everything can be defaulted. */ | |
3301 | ||
3302 | static void | |
3303 | emit_retjcr (tok, ntok, vopname) | |
3304 | const expressionS *tok; | |
3305 | int ntok; | |
3306 | const PTR vopname; | |
3307 | { | |
3308 | const char *opname = (const char *)vopname; | |
3309 | expressionS newtok[3]; | |
3310 | int r, tokidx = 0; | |
3311 | ||
3312 | if (tokidx < ntok && tok[tokidx].X_op == O_register) | |
3313 | r = regno (tok[tokidx++].X_add_number); | |
3314 | else | |
3315 | r = AXP_REG_ZERO; | |
3316 | ||
3317 | set_tok_reg (newtok[0], r); | |
3318 | ||
3319 | if (tokidx < ntok && | |
3320 | (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister)) | |
3321 | r = regno (tok[tokidx++].X_add_number); | |
3322 | else | |
3323 | r = AXP_REG_RA; | |
3324 | ||
3325 | set_tok_cpreg (newtok[1], r); | |
3326 | ||
3327 | if (tokidx < ntok) | |
3328 | newtok[2] = tok[tokidx]; | |
3329 | else | |
3330 | set_tok_const (newtok[2], strcmp(opname, "ret") == 0); | |
3331 | ||
3332 | assemble_tokens (opname, newtok, 3, 0); | |
3333 | } | |
3334 | \f | |
3335 | /* Assembler directives */ | |
3336 | ||
3337 | /* Handle the .text pseudo-op. This is like the usual one, but it | |
3338 | clears alpha_insn_label and restores auto alignment. */ | |
3339 | ||
3340 | static void | |
3341 | s_alpha_text (i) | |
3342 | int i; | |
3343 | ||
3344 | { | |
3345 | s_text (i); | |
3346 | alpha_insn_label = NULL; | |
3347 | alpha_auto_align_on = 1; | |
3348 | alpha_current_align = 0; | |
3349 | } | |
3350 | ||
3351 | /* Handle the .data pseudo-op. This is like the usual one, but it | |
3352 | clears alpha_insn_label and restores auto alignment. */ | |
3353 | ||
3354 | static void | |
3355 | s_alpha_data (i) | |
3356 | int i; | |
3357 | { | |
3358 | s_data (i); | |
3359 | alpha_insn_label = NULL; | |
3360 | alpha_auto_align_on = 1; | |
3361 | alpha_current_align = 0; | |
3362 | } | |
3363 | ||
3364 | #if defined (OBJ_ECOFF) || defined (OBJ_EVAX) | |
3365 | ||
3366 | /* Handle the OSF/1 and openVMS .comm pseudo quirks. | |
3367 | openVMS constructs a section for every common symbol. */ | |
3368 | ||
3369 | static void | |
3370 | s_alpha_comm (ignore) | |
3371 | int ignore; | |
3372 | { | |
3373 | register char *name; | |
3374 | register char c; | |
3375 | register char *p; | |
3376 | offsetT temp; | |
3377 | register symbolS *symbolP; | |
3378 | ||
3379 | #ifdef OBJ_EVAX | |
3380 | segT current_section = now_seg; | |
3381 | int current_subsec = now_subseg; | |
3382 | segT new_seg; | |
3383 | #endif | |
3384 | ||
3385 | name = input_line_pointer; | |
3386 | c = get_symbol_end (); | |
3387 | ||
3388 | /* just after name is now '\0' */ | |
3389 | p = input_line_pointer; | |
3390 | *p = c; | |
3391 | ||
3392 | SKIP_WHITESPACE (); | |
3393 | ||
3394 | /* Alpha OSF/1 compiler doesn't provide the comma, gcc does. */ | |
3395 | if (*input_line_pointer == ',') | |
3396 | { | |
3397 | input_line_pointer++; | |
3398 | SKIP_WHITESPACE (); | |
3399 | } | |
3400 | if ((temp = get_absolute_expression ()) < 0) | |
3401 | { | |
3402 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); | |
3403 | ignore_rest_of_line (); | |
3404 | return; | |
3405 | } | |
3406 | ||
3407 | *p = 0; | |
3408 | symbolP = symbol_find_or_make (name); | |
3409 | ||
3410 | #ifdef OBJ_EVAX | |
3411 | /* Make a section for the common symbol. */ | |
3412 | new_seg = subseg_new (xstrdup (name), 0); | |
3413 | #endif | |
3414 | ||
3415 | *p = c; | |
3416 | ||
3417 | #ifdef OBJ_EVAX | |
3418 | /* alignment might follow */ | |
3419 | if (*input_line_pointer == ',') | |
3420 | { | |
3421 | offsetT align; | |
3422 | ||
3423 | input_line_pointer++; | |
3424 | align = get_absolute_expression (); | |
3425 | bfd_set_section_alignment (stdoutput, new_seg, align); | |
3426 | } | |
3427 | #endif | |
3428 | ||
3429 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
3430 | { | |
3431 | as_bad (_("Ignoring attempt to re-define symbol")); | |
3432 | ignore_rest_of_line (); | |
3433 | return; | |
3434 | } | |
3435 | ||
3436 | #ifdef OBJ_EVAX | |
3437 | if (bfd_section_size (stdoutput, new_seg) > 0) | |
3438 | { | |
3439 | if (bfd_section_size (stdoutput, new_seg) != temp) | |
3440 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
3441 | S_GET_NAME (symbolP), | |
3442 | (long) bfd_section_size (stdoutput, new_seg), | |
3443 | (long) temp); | |
3444 | } | |
3445 | #else | |
3446 | if (S_GET_VALUE (symbolP)) | |
3447 | { | |
3448 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
3449 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
3450 | S_GET_NAME (symbolP), | |
3451 | (long) S_GET_VALUE (symbolP), | |
3452 | (long) temp); | |
3453 | } | |
3454 | #endif | |
3455 | else | |
3456 | { | |
3457 | #ifdef OBJ_EVAX | |
3458 | subseg_set (new_seg, 0); | |
3459 | p = frag_more (temp); | |
3460 | new_seg->flags |= SEC_IS_COMMON; | |
3461 | if (! S_IS_DEFINED (symbolP)) | |
9de8d8f1 | 3462 | S_SET_SEGMENT (symbolP, new_seg); |
252b5132 RH |
3463 | #else |
3464 | S_SET_VALUE (symbolP, (valueT) temp); | |
3465 | #endif | |
3466 | S_SET_EXTERNAL (symbolP); | |
3467 | } | |
3468 | ||
3469 | #ifdef OBJ_EVAX | |
3470 | subseg_set (current_section, current_subsec); | |
3471 | #endif | |
3472 | ||
3473 | know (symbolP->sy_frag == &zero_address_frag); | |
3474 | ||
3475 | demand_empty_rest_of_line (); | |
3476 | } | |
3477 | ||
3478 | #endif /* ! OBJ_ELF */ | |
3479 | ||
3480 | #ifdef OBJ_ECOFF | |
3481 | ||
3482 | /* Handle the .rdata pseudo-op. This is like the usual one, but it | |
3483 | clears alpha_insn_label and restores auto alignment. */ | |
3484 | ||
3485 | static void | |
3486 | s_alpha_rdata (ignore) | |
3487 | int ignore; | |
3488 | { | |
3489 | int temp; | |
3490 | ||
3491 | temp = get_absolute_expression (); | |
3492 | subseg_new (".rdata", 0); | |
3493 | demand_empty_rest_of_line (); | |
3494 | alpha_insn_label = NULL; | |
3495 | alpha_auto_align_on = 1; | |
3496 | alpha_current_align = 0; | |
3497 | } | |
3498 | ||
3499 | #endif | |
3500 | ||
3501 | #ifdef OBJ_ECOFF | |
3502 | ||
3503 | /* Handle the .sdata pseudo-op. This is like the usual one, but it | |
3504 | clears alpha_insn_label and restores auto alignment. */ | |
3505 | ||
3506 | static void | |
3507 | s_alpha_sdata (ignore) | |
3508 | int ignore; | |
3509 | { | |
3510 | int temp; | |
3511 | ||
3512 | temp = get_absolute_expression (); | |
3513 | subseg_new (".sdata", 0); | |
3514 | demand_empty_rest_of_line (); | |
3515 | alpha_insn_label = NULL; | |
3516 | alpha_auto_align_on = 1; | |
3517 | alpha_current_align = 0; | |
3518 | } | |
3519 | #endif | |
3520 | ||
3521 | #ifdef OBJ_ELF | |
3522 | ||
3523 | /* Handle the .section pseudo-op. This is like the usual one, but it | |
3524 | clears alpha_insn_label and restores auto alignment. */ | |
3525 | ||
3526 | static void | |
3527 | s_alpha_section (ignore) | |
3528 | int ignore; | |
3529 | { | |
3530 | obj_elf_section (ignore); | |
3531 | ||
3532 | alpha_insn_label = NULL; | |
3533 | alpha_auto_align_on = 1; | |
3534 | alpha_current_align = 0; | |
3535 | } | |
3536 | ||
3537 | static void | |
3538 | s_alpha_ent (dummy) | |
3539 | int dummy; | |
3540 | { | |
3541 | if (ECOFF_DEBUGGING) | |
3542 | ecoff_directive_ent (0); | |
3543 | else | |
3544 | { | |
3545 | char *name, name_end; | |
3546 | name = input_line_pointer; | |
3547 | name_end = get_symbol_end (); | |
3548 | ||
3549 | if (! is_name_beginner (*name)) | |
3550 | { | |
3551 | as_warn (_(".ent directive has no name")); | |
3552 | *input_line_pointer = name_end; | |
3553 | } | |
3554 | else | |
3555 | { | |
3556 | symbolS *sym; | |
3557 | ||
3558 | if (alpha_cur_ent_sym) | |
3559 | as_warn (_("nested .ent directives")); | |
3560 | ||
3561 | sym = symbol_find_or_make (name); | |
49309057 | 3562 | symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; |
252b5132 RH |
3563 | alpha_cur_ent_sym = sym; |
3564 | ||
3565 | /* The .ent directive is sometimes followed by a number. Not sure | |
3566 | what it really means, but ignore it. */ | |
3567 | *input_line_pointer = name_end; | |
3568 | SKIP_WHITESPACE (); | |
3569 | if (*input_line_pointer == ',') | |
3570 | { | |
3571 | input_line_pointer++; | |
3572 | SKIP_WHITESPACE (); | |
3573 | } | |
3574 | if (isdigit (*input_line_pointer) || *input_line_pointer == '-') | |
3575 | (void) get_absolute_expression (); | |
3576 | } | |
3577 | demand_empty_rest_of_line (); | |
3578 | } | |
3579 | } | |
3580 | ||
3581 | static void | |
3582 | s_alpha_end (dummy) | |
3583 | int dummy; | |
3584 | { | |
3585 | if (ECOFF_DEBUGGING) | |
3586 | ecoff_directive_end (0); | |
3587 | else | |
3588 | { | |
3589 | char *name, name_end; | |
3590 | name = input_line_pointer; | |
3591 | name_end = get_symbol_end (); | |
3592 | ||
3593 | if (! is_name_beginner (*name)) | |
3594 | { | |
3595 | as_warn (_(".end directive has no name")); | |
3596 | *input_line_pointer = name_end; | |
3597 | } | |
3598 | else | |
3599 | { | |
3600 | symbolS *sym; | |
3601 | ||
3602 | sym = symbol_find (name); | |
3603 | if (sym != alpha_cur_ent_sym) | |
3604 | as_warn (_(".end directive names different symbol than .ent")); | |
3605 | ||
3606 | /* Create an expression to calculate the size of the function. */ | |
3607 | if (sym) | |
3608 | { | |
49309057 ILT |
3609 | symbol_get_obj (sym)->size = |
3610 | (expressionS *) xmalloc (sizeof (expressionS)); | |
3611 | symbol_get_obj (sym)->size->X_op = O_subtract; | |
3612 | symbol_get_obj (sym)->size->X_add_symbol | |
252b5132 | 3613 | = symbol_new ("L0\001", now_seg, frag_now_fix (), frag_now); |
49309057 ILT |
3614 | symbol_get_obj (sym)->size->X_op_symbol = sym; |
3615 | symbol_get_obj (sym)->size->X_add_number = 0; | |
252b5132 RH |
3616 | } |
3617 | ||
3618 | alpha_cur_ent_sym = NULL; | |
3619 | ||
3620 | *input_line_pointer = name_end; | |
3621 | } | |
3622 | demand_empty_rest_of_line (); | |
3623 | } | |
3624 | } | |
3625 | ||
3626 | static void | |
3627 | s_alpha_mask (fp) | |
3628 | int fp; | |
3629 | { | |
3630 | if (ECOFF_DEBUGGING) | |
3631 | { | |
3632 | if (fp) | |
3633 | ecoff_directive_fmask (0); | |
3634 | else | |
3635 | ecoff_directive_mask (0); | |
3636 | } | |
3637 | else | |
3638 | discard_rest_of_line (); | |
3639 | } | |
3640 | ||
3641 | static void | |
3642 | s_alpha_frame (dummy) | |
3643 | int dummy; | |
3644 | { | |
3645 | if (ECOFF_DEBUGGING) | |
3646 | ecoff_directive_frame (0); | |
3647 | else | |
3648 | discard_rest_of_line (); | |
3649 | } | |
3650 | ||
3651 | static void | |
3652 | s_alpha_prologue (ignore) | |
3653 | int ignore; | |
3654 | { | |
3655 | symbolS *sym; | |
3656 | int arg; | |
3657 | ||
3658 | arg = get_absolute_expression (); | |
3659 | demand_empty_rest_of_line (); | |
3660 | ||
3661 | if (ECOFF_DEBUGGING) | |
3662 | sym = ecoff_get_cur_proc_sym (); | |
3663 | else | |
3664 | sym = alpha_cur_ent_sym; | |
3665 | know (sym != NULL); | |
3666 | ||
3667 | switch (arg) | |
3668 | { | |
3669 | case 0: /* No PV required. */ | |
3670 | S_SET_OTHER (sym, STO_ALPHA_NOPV); | |
3671 | break; | |
3672 | case 1: /* Std GP load. */ | |
3673 | S_SET_OTHER (sym, STO_ALPHA_STD_GPLOAD); | |
3674 | break; | |
3675 | case 2: /* Non-std use of PV. */ | |
3676 | break; | |
3677 | ||
3678 | default: | |
3679 | as_bad (_("Invalid argument %d to .prologue."), arg); | |
3680 | break; | |
3681 | } | |
3682 | } | |
3683 | ||
3684 | static void | |
3685 | s_alpha_coff_wrapper (which) | |
3686 | int which; | |
3687 | { | |
3688 | static void (* const fns[]) PARAMS ((int)) = { | |
3689 | ecoff_directive_begin, | |
3690 | ecoff_directive_bend, | |
3691 | ecoff_directive_def, | |
3692 | ecoff_directive_dim, | |
3693 | ecoff_directive_endef, | |
3694 | ecoff_directive_file, | |
3695 | ecoff_directive_scl, | |
3696 | ecoff_directive_tag, | |
3697 | ecoff_directive_val, | |
3698 | ecoff_directive_loc, | |
3699 | }; | |
3700 | ||
3701 | assert (which >= 0 && which < sizeof(fns)/sizeof(*fns)); | |
3702 | ||
3703 | if (ECOFF_DEBUGGING) | |
3704 | (*fns[which])(0); | |
3705 | else | |
3706 | { | |
3707 | as_bad (_("ECOFF debugging is disabled.")); | |
3708 | ignore_rest_of_line (); | |
3709 | } | |
3710 | } | |
3711 | #endif /* OBJ_ELF */ | |
3712 | ||
3713 | #ifdef OBJ_EVAX | |
3714 | ||
3715 | /* Handle the section specific pseudo-op. */ | |
3716 | ||
3717 | static void | |
3718 | s_alpha_section (secid) | |
3719 | int secid; | |
3720 | { | |
3721 | int temp; | |
3722 | #define EVAX_SECTION_COUNT 5 | |
3723 | static char *section_name[EVAX_SECTION_COUNT+1] = | |
3724 | { "NULL", ".rdata", ".comm", ".link", ".ctors", ".dtors" }; | |
3725 | ||
3726 | if ((secid <= 0) || (secid > EVAX_SECTION_COUNT)) | |
3727 | { | |
3728 | as_fatal (_("Unknown section directive")); | |
3729 | demand_empty_rest_of_line (); | |
3730 | return; | |
3731 | } | |
3732 | temp = get_absolute_expression (); | |
3733 | subseg_new (section_name[secid], 0); | |
3734 | demand_empty_rest_of_line (); | |
3735 | alpha_insn_label = NULL; | |
3736 | alpha_auto_align_on = 1; | |
3737 | alpha_current_align = 0; | |
3738 | } | |
3739 | ||
3740 | ||
3741 | /* Parse .ent directives. */ | |
3742 | ||
3743 | static void | |
3744 | s_alpha_ent (ignore) | |
3745 | int ignore; | |
3746 | { | |
3747 | symbolS *symbol; | |
3748 | expressionS symexpr; | |
3749 | ||
3750 | alpha_evax_proc.pdsckind = 0; | |
3751 | alpha_evax_proc.framereg = -1; | |
3752 | alpha_evax_proc.framesize = 0; | |
3753 | alpha_evax_proc.rsa_offset = 0; | |
3754 | alpha_evax_proc.ra_save = AXP_REG_RA; | |
3755 | alpha_evax_proc.fp_save = -1; | |
3756 | alpha_evax_proc.imask = 0; | |
3757 | alpha_evax_proc.fmask = 0; | |
3758 | alpha_evax_proc.prologue = 0; | |
3759 | alpha_evax_proc.type = 0; | |
3760 | ||
3761 | expression (&symexpr); | |
3762 | ||
3763 | if (symexpr.X_op != O_symbol) | |
3764 | { | |
3765 | as_fatal (_(".ent directive has no symbol")); | |
3766 | demand_empty_rest_of_line (); | |
3767 | return; | |
3768 | } | |
3769 | ||
3770 | symbol = make_expr_symbol (&symexpr); | |
9de8d8f1 | 3771 | symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION; |
252b5132 RH |
3772 | alpha_evax_proc.symbol = symbol; |
3773 | ||
3774 | demand_empty_rest_of_line (); | |
3775 | return; | |
3776 | } | |
3777 | ||
3778 | ||
3779 | /* Parse .frame <framreg>,<framesize>,RA,<rsa_offset> directives. */ | |
3780 | ||
3781 | static void | |
3782 | s_alpha_frame (ignore) | |
3783 | int ignore; | |
3784 | { | |
3785 | long val; | |
3786 | ||
3787 | alpha_evax_proc.framereg = tc_get_register (1); | |
3788 | ||
3789 | SKIP_WHITESPACE (); | |
3790 | if (*input_line_pointer++ != ',' | |
3791 | || get_absolute_expression_and_terminator (&val) != ',') | |
3792 | { | |
3793 | as_warn (_("Bad .frame directive 1./2. param")); | |
3794 | --input_line_pointer; | |
3795 | demand_empty_rest_of_line (); | |
3796 | return; | |
3797 | } | |
3798 | ||
3799 | alpha_evax_proc.framesize = val; | |
3800 | ||
3801 | (void) tc_get_register (1); | |
3802 | SKIP_WHITESPACE (); | |
3803 | if (*input_line_pointer++ != ',') | |
3804 | { | |
3805 | as_warn (_("Bad .frame directive 3./4. param")); | |
3806 | --input_line_pointer; | |
3807 | demand_empty_rest_of_line (); | |
3808 | return; | |
3809 | } | |
3810 | alpha_evax_proc.rsa_offset = get_absolute_expression (); | |
3811 | ||
3812 | return; | |
3813 | } | |
3814 | ||
3815 | static void | |
3816 | s_alpha_pdesc (ignore) | |
3817 | int ignore; | |
3818 | { | |
3819 | char *name; | |
3820 | char name_end; | |
3821 | long val; | |
3822 | register char *p; | |
3823 | expressionS exp; | |
3824 | symbolS *entry_sym; | |
3825 | fixS *fixp; | |
3826 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
3827 | ||
3828 | if (now_seg != alpha_link_section) | |
3829 | { | |
3830 | as_bad (_(".pdesc directive not in link (.link) section")); | |
3831 | demand_empty_rest_of_line (); | |
3832 | return; | |
3833 | } | |
3834 | ||
3835 | if ((alpha_evax_proc.symbol == 0) | |
3836 | || (!S_IS_DEFINED (alpha_evax_proc.symbol))) | |
3837 | { | |
3838 | as_fatal (_(".pdesc has no matching .ent")); | |
3839 | demand_empty_rest_of_line (); | |
3840 | return; | |
3841 | } | |
3842 | ||
3843 | alpha_evax_proc.symbol->sy_obj = (valueT)seginfo->literal_pool_size; | |
3844 | ||
3845 | expression (&exp); | |
3846 | if (exp.X_op != O_symbol) | |
3847 | { | |
3848 | as_warn (_(".pdesc directive has no entry symbol")); | |
3849 | demand_empty_rest_of_line (); | |
3850 | return; | |
3851 | } | |
3852 | ||
3853 | entry_sym = make_expr_symbol (&exp); | |
3854 | /* Save bfd symbol of proc desc in function symbol. */ | |
9de8d8f1 RH |
3855 | symbol_get_bfdsym (alpha_evax_proc.symbol)->udata.p |
3856 | = symbol_get_bfdsym (entry_sym); | |
252b5132 RH |
3857 | |
3858 | SKIP_WHITESPACE (); | |
3859 | if (*input_line_pointer++ != ',') | |
3860 | { | |
3861 | as_warn (_("No comma after .pdesc <entryname>")); | |
3862 | demand_empty_rest_of_line (); | |
3863 | return; | |
3864 | } | |
3865 | ||
3866 | SKIP_WHITESPACE (); | |
3867 | name = input_line_pointer; | |
3868 | name_end = get_symbol_end (); | |
3869 | ||
3870 | if (strncmp(name, "stack", 5) == 0) | |
3871 | { | |
3872 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_STACK; | |
3873 | } | |
3874 | else if (strncmp(name, "reg", 3) == 0) | |
3875 | { | |
3876 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_REGISTER; | |
3877 | } | |
3878 | else if (strncmp(name, "null", 4) == 0) | |
3879 | { | |
3880 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_NULL; | |
3881 | } | |
3882 | else | |
3883 | { | |
3884 | as_fatal (_("unknown procedure kind")); | |
3885 | demand_empty_rest_of_line (); | |
3886 | return; | |
3887 | } | |
3888 | ||
3889 | *input_line_pointer = name_end; | |
3890 | demand_empty_rest_of_line (); | |
3891 | ||
3892 | #ifdef md_flush_pending_output | |
3893 | md_flush_pending_output (); | |
3894 | #endif | |
3895 | ||
3896 | frag_align (3, 0, 0); | |
3897 | p = frag_more (16); | |
3898 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
3899 | fixp->fx_done = 1; | |
3900 | seginfo->literal_pool_size += 16; | |
3901 | ||
3902 | *p = alpha_evax_proc.pdsckind | |
3903 | | ((alpha_evax_proc.framereg == 29) ? PDSC_S_M_BASE_REG_IS_FP : 0); | |
3904 | *(p+1) = PDSC_S_M_NATIVE | |
3905 | | PDSC_S_M_NO_JACKET; | |
3906 | ||
3907 | switch (alpha_evax_proc.pdsckind) | |
3908 | { | |
3909 | case PDSC_S_K_KIND_NULL: | |
3910 | *(p+2) = 0; | |
3911 | *(p+3) = 0; | |
3912 | break; | |
3913 | case PDSC_S_K_KIND_FP_REGISTER: | |
3914 | *(p+2) = alpha_evax_proc.fp_save; | |
3915 | *(p+3) = alpha_evax_proc.ra_save; | |
3916 | break; | |
3917 | case PDSC_S_K_KIND_FP_STACK: | |
3918 | md_number_to_chars (p+2, (valueT)alpha_evax_proc.rsa_offset, 2); | |
3919 | break; | |
3920 | default: /* impossible */ | |
3921 | break; | |
3922 | } | |
3923 | ||
3924 | *(p+4) = 0; | |
3925 | *(p+5) = alpha_evax_proc.type & 0x0f; | |
3926 | ||
3927 | /* Signature offset. */ | |
3928 | md_number_to_chars (p+6, (valueT)0, 2); | |
3929 | ||
3930 | fix_new_exp (frag_now, p-frag_now->fr_literal+8, 8, &exp, 0, BFD_RELOC_64); | |
3931 | ||
3932 | if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_NULL) | |
3933 | return; | |
3934 | ||
3935 | /* Add dummy fix to make add_to_link_pool work. */ | |
3936 | p = frag_more (8); | |
3937 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
3938 | fixp->fx_done = 1; | |
3939 | seginfo->literal_pool_size += 8; | |
3940 | ||
3941 | /* pdesc+16: Size. */ | |
3942 | md_number_to_chars (p, (valueT)alpha_evax_proc.framesize, 4); | |
3943 | ||
3944 | md_number_to_chars (p+4, (valueT)0, 2); | |
3945 | ||
3946 | /* Entry length. */ | |
3947 | md_number_to_chars (p+6, alpha_evax_proc.prologue, 2); | |
3948 | ||
3949 | if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_FP_REGISTER) | |
3950 | return; | |
3951 | ||
3952 | /* Add dummy fix to make add_to_link_pool work. */ | |
3953 | p = frag_more (8); | |
3954 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
3955 | fixp->fx_done = 1; | |
3956 | seginfo->literal_pool_size += 8; | |
3957 | ||
3958 | /* pdesc+24: register masks. */ | |
3959 | ||
3960 | md_number_to_chars (p, alpha_evax_proc.imask, 4); | |
3961 | md_number_to_chars (p+4, alpha_evax_proc.fmask, 4); | |
3962 | ||
3963 | return; | |
3964 | } | |
3965 | ||
3966 | ||
3967 | /* Support for crash debug on vms. */ | |
3968 | ||
3969 | static void | |
3970 | s_alpha_name (ignore) | |
3971 | int ignore; | |
3972 | { | |
3973 | register char *p; | |
3974 | expressionS exp; | |
3975 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
3976 | ||
3977 | if (now_seg != alpha_link_section) | |
3978 | { | |
3979 | as_bad (_(".name directive not in link (.link) section")); | |
3980 | demand_empty_rest_of_line (); | |
3981 | return; | |
3982 | } | |
3983 | ||
3984 | expression (&exp); | |
3985 | if (exp.X_op != O_symbol) | |
3986 | { | |
3987 | as_warn (_(".name directive has no symbol")); | |
3988 | demand_empty_rest_of_line (); | |
3989 | return; | |
3990 | } | |
3991 | ||
3992 | demand_empty_rest_of_line (); | |
3993 | ||
3994 | #ifdef md_flush_pending_output | |
3995 | md_flush_pending_output (); | |
3996 | #endif | |
3997 | ||
3998 | frag_align (3, 0, 0); | |
3999 | p = frag_more (8); | |
4000 | seginfo->literal_pool_size += 8; | |
4001 | ||
4002 | fix_new_exp (frag_now, p-frag_now->fr_literal, 8, &exp, 0, BFD_RELOC_64); | |
4003 | ||
4004 | return; | |
4005 | } | |
4006 | ||
4007 | ||
4008 | static void | |
4009 | s_alpha_linkage (ignore) | |
4010 | int ignore; | |
4011 | { | |
4012 | expressionS exp; | |
4013 | char *p; | |
4014 | ||
4015 | #ifdef md_flush_pending_output | |
4016 | md_flush_pending_output (); | |
4017 | #endif | |
4018 | ||
4019 | expression (&exp); | |
4020 | if (exp.X_op != O_symbol) | |
4021 | { | |
4022 | as_fatal (_("No symbol after .linkage")); | |
4023 | } | |
4024 | else | |
4025 | { | |
4026 | p = frag_more (LKP_S_K_SIZE); | |
4027 | memset (p, 0, LKP_S_K_SIZE); | |
4028 | fix_new_exp (frag_now, p - frag_now->fr_literal, LKP_S_K_SIZE, &exp, 0,\ | |
4029 | BFD_RELOC_ALPHA_LINKAGE); | |
4030 | } | |
4031 | demand_empty_rest_of_line (); | |
4032 | ||
4033 | return; | |
4034 | } | |
4035 | ||
4036 | ||
4037 | static void | |
4038 | s_alpha_code_address (ignore) | |
4039 | int ignore; | |
4040 | { | |
4041 | expressionS exp; | |
4042 | char *p; | |
4043 | ||
4044 | #ifdef md_flush_pending_output | |
4045 | md_flush_pending_output (); | |
4046 | #endif | |
4047 | ||
4048 | expression (&exp); | |
4049 | if (exp.X_op != O_symbol) | |
4050 | { | |
4051 | as_fatal (_("No symbol after .code_address")); | |
4052 | } | |
4053 | else | |
4054 | { | |
4055 | p = frag_more (8); | |
4056 | memset (p, 0, 8); | |
4057 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0,\ | |
4058 | BFD_RELOC_ALPHA_CODEADDR); | |
4059 | } | |
4060 | demand_empty_rest_of_line (); | |
4061 | ||
4062 | return; | |
4063 | } | |
4064 | ||
4065 | ||
4066 | static void | |
4067 | s_alpha_fp_save (ignore) | |
4068 | int ignore; | |
4069 | { | |
4070 | ||
4071 | alpha_evax_proc.fp_save = tc_get_register (1); | |
4072 | ||
4073 | demand_empty_rest_of_line (); | |
4074 | return; | |
4075 | } | |
4076 | ||
4077 | ||
4078 | static void | |
4079 | s_alpha_mask (ignore) | |
4080 | int ignore; | |
4081 | { | |
4082 | long val; | |
4083 | ||
4084 | if (get_absolute_expression_and_terminator (&val) != ',') | |
4085 | { | |
4086 | as_warn (_("Bad .mask directive")); | |
4087 | --input_line_pointer; | |
4088 | } | |
4089 | else | |
4090 | { | |
4091 | alpha_evax_proc.imask = val; | |
4092 | (void)get_absolute_expression (); | |
4093 | } | |
4094 | demand_empty_rest_of_line (); | |
4095 | ||
4096 | return; | |
4097 | } | |
4098 | ||
4099 | ||
4100 | static void | |
4101 | s_alpha_fmask (ignore) | |
4102 | int ignore; | |
4103 | { | |
4104 | long val; | |
4105 | ||
4106 | if (get_absolute_expression_and_terminator (&val) != ',') | |
4107 | { | |
4108 | as_warn (_("Bad .fmask directive")); | |
4109 | --input_line_pointer; | |
4110 | } | |
4111 | else | |
4112 | { | |
4113 | alpha_evax_proc.fmask = val; | |
4114 | (void) get_absolute_expression (); | |
4115 | } | |
4116 | demand_empty_rest_of_line (); | |
4117 | ||
4118 | return; | |
4119 | } | |
4120 | ||
4121 | static void | |
4122 | s_alpha_end (ignore) | |
4123 | int ignore; | |
4124 | { | |
4125 | char c; | |
4126 | ||
4127 | c = get_symbol_end (); | |
4128 | *input_line_pointer = c; | |
4129 | demand_empty_rest_of_line (); | |
4130 | alpha_evax_proc.symbol = 0; | |
4131 | ||
4132 | return; | |
4133 | } | |
4134 | ||
4135 | ||
4136 | static void | |
4137 | s_alpha_file (ignore) | |
4138 | int ignore; | |
4139 | { | |
4140 | symbolS *s; | |
4141 | int length; | |
4142 | static char case_hack[32]; | |
4143 | ||
4144 | extern char *demand_copy_string PARAMS ((int *lenP)); | |
4145 | ||
4146 | sprintf (case_hack, "<CASE:%01d%01d>", | |
9de8d8f1 | 4147 | alpha_flag_hash_long_names, alpha_flag_show_after_trunc); |
252b5132 RH |
4148 | |
4149 | s = symbol_find_or_make (case_hack); | |
9de8d8f1 | 4150 | symbol_get_bfdsym (s)->flags |= BSF_FILE; |
252b5132 RH |
4151 | |
4152 | get_absolute_expression (); | |
4153 | s = symbol_find_or_make (demand_copy_string (&length)); | |
9de8d8f1 | 4154 | symbol_get_bfdsym (s)->flags |= BSF_FILE; |
252b5132 RH |
4155 | demand_empty_rest_of_line (); |
4156 | ||
4157 | return; | |
4158 | } | |
4159 | #endif /* OBJ_EVAX */ | |
4160 | ||
4161 | /* Handle the .gprel32 pseudo op. */ | |
4162 | ||
4163 | static void | |
4164 | s_alpha_gprel32 (ignore) | |
4165 | int ignore; | |
4166 | { | |
4167 | expressionS e; | |
4168 | char *p; | |
4169 | ||
4170 | SKIP_WHITESPACE (); | |
4171 | expression (&e); | |
4172 | ||
4173 | #ifdef OBJ_ELF | |
4174 | switch (e.X_op) | |
4175 | { | |
4176 | case O_constant: | |
4177 | e.X_add_symbol = section_symbol(absolute_section); | |
4178 | e.X_op = O_symbol; | |
4179 | /* FALLTHRU */ | |
4180 | case O_symbol: | |
4181 | break; | |
4182 | default: | |
4183 | abort(); | |
4184 | } | |
4185 | #else | |
4186 | #ifdef OBJ_ECOFF | |
4187 | switch (e.X_op) | |
4188 | { | |
4189 | case O_constant: | |
4190 | e.X_add_symbol = section_symbol (absolute_section); | |
4191 | /* fall through */ | |
4192 | case O_symbol: | |
4193 | e.X_op = O_subtract; | |
4194 | e.X_op_symbol = alpha_gp_symbol; | |
4195 | break; | |
4196 | default: | |
4197 | abort (); | |
4198 | } | |
4199 | #endif | |
4200 | #endif | |
4201 | ||
4202 | if (alpha_auto_align_on && alpha_current_align < 2) | |
4203 | alpha_align (2, (char *) NULL, alpha_insn_label, 0); | |
4204 | if (alpha_current_align > 2) | |
4205 | alpha_current_align = 2; | |
4206 | alpha_insn_label = NULL; | |
4207 | ||
4208 | p = frag_more (4); | |
4209 | memset (p, 0, 4); | |
4210 | fix_new_exp (frag_now, p-frag_now->fr_literal, 4, | |
4211 | &e, 0, BFD_RELOC_GPREL32); | |
4212 | } | |
4213 | ||
4214 | /* Handle floating point allocation pseudo-ops. This is like the | |
4215 | generic vresion, but it makes sure the current label, if any, is | |
4216 | correctly aligned. */ | |
4217 | ||
4218 | static void | |
4219 | s_alpha_float_cons (type) | |
4220 | int type; | |
4221 | { | |
4222 | int log_size; | |
4223 | ||
4224 | switch (type) | |
4225 | { | |
4226 | default: | |
4227 | case 'f': | |
4228 | case 'F': | |
4229 | log_size = 2; | |
4230 | break; | |
4231 | ||
4232 | case 'd': | |
4233 | case 'D': | |
4234 | case 'G': | |
4235 | log_size = 3; | |
4236 | break; | |
4237 | ||
4238 | case 'x': | |
4239 | case 'X': | |
4240 | case 'p': | |
4241 | case 'P': | |
4242 | log_size = 4; | |
4243 | break; | |
4244 | } | |
4245 | ||
4246 | if (alpha_auto_align_on && alpha_current_align < log_size) | |
4247 | alpha_align (log_size, (char *) NULL, alpha_insn_label, 0); | |
4248 | if (alpha_current_align > log_size) | |
4249 | alpha_current_align = log_size; | |
4250 | alpha_insn_label = NULL; | |
4251 | ||
4252 | float_cons (type); | |
4253 | } | |
4254 | ||
4255 | /* Handle the .proc pseudo op. We don't really do much with it except | |
4256 | parse it. */ | |
4257 | ||
4258 | static void | |
4259 | s_alpha_proc (is_static) | |
4260 | int is_static; | |
4261 | { | |
4262 | char *name; | |
4263 | char c; | |
4264 | char *p; | |
4265 | symbolS *symbolP; | |
4266 | int temp; | |
4267 | ||
4268 | /* Takes ".proc name,nargs" */ | |
4269 | SKIP_WHITESPACE (); | |
4270 | name = input_line_pointer; | |
4271 | c = get_symbol_end (); | |
4272 | p = input_line_pointer; | |
4273 | symbolP = symbol_find_or_make (name); | |
4274 | *p = c; | |
4275 | SKIP_WHITESPACE (); | |
4276 | if (*input_line_pointer != ',') | |
4277 | { | |
4278 | *p = 0; | |
4279 | as_warn (_("Expected comma after name \"%s\""), name); | |
4280 | *p = c; | |
4281 | temp = 0; | |
4282 | ignore_rest_of_line (); | |
4283 | } | |
4284 | else | |
4285 | { | |
4286 | input_line_pointer++; | |
4287 | temp = get_absolute_expression (); | |
4288 | } | |
4289 | /* symbolP->sy_other = (signed char) temp; */ | |
4290 | as_warn (_("unhandled: .proc %s,%d"), name, temp); | |
4291 | demand_empty_rest_of_line (); | |
4292 | } | |
4293 | ||
4294 | /* Handle the .set pseudo op. This is used to turn on and off most of | |
4295 | the assembler features. */ | |
4296 | ||
4297 | static void | |
4298 | s_alpha_set (x) | |
4299 | int x; | |
4300 | { | |
4301 | char *name, ch, *s; | |
4302 | int yesno = 1; | |
4303 | ||
4304 | SKIP_WHITESPACE (); | |
4305 | name = input_line_pointer; | |
4306 | ch = get_symbol_end (); | |
4307 | ||
4308 | s = name; | |
4309 | if (s[0] == 'n' && s[1] == 'o') | |
4310 | { | |
4311 | yesno = 0; | |
4312 | s += 2; | |
4313 | } | |
4314 | if (!strcmp ("reorder", s)) | |
4315 | /* ignore */ ; | |
4316 | else if (!strcmp ("at", s)) | |
4317 | alpha_noat_on = !yesno; | |
4318 | else if (!strcmp ("macro", s)) | |
4319 | alpha_macros_on = yesno; | |
4320 | else if (!strcmp ("move", s)) | |
4321 | /* ignore */ ; | |
4322 | else if (!strcmp ("volatile", s)) | |
4323 | /* ignore */ ; | |
4324 | else | |
4325 | as_warn (_("Tried to .set unrecognized mode `%s'"), name); | |
4326 | ||
4327 | *input_line_pointer = ch; | |
4328 | demand_empty_rest_of_line (); | |
4329 | } | |
4330 | ||
4331 | /* Handle the .base pseudo op. This changes the assembler's notion of | |
4332 | the $gp register. */ | |
4333 | ||
4334 | static void | |
4335 | s_alpha_base (ignore) | |
4336 | int ignore; | |
4337 | { | |
4338 | #if 0 | |
4339 | if (first_32bit_quadrant) | |
4340 | { | |
4341 | /* not fatal, but it might not work in the end */ | |
4342 | as_warn (_("File overrides no-base-register option.")); | |
4343 | first_32bit_quadrant = 0; | |
4344 | } | |
4345 | #endif | |
4346 | ||
4347 | SKIP_WHITESPACE (); | |
4348 | if (*input_line_pointer == '$') | |
4349 | { /* $rNN form */ | |
4350 | input_line_pointer++; | |
4351 | if (*input_line_pointer == 'r') | |
4352 | input_line_pointer++; | |
4353 | } | |
4354 | ||
4355 | alpha_gp_register = get_absolute_expression (); | |
4356 | if (alpha_gp_register < 0 || alpha_gp_register > 31) | |
4357 | { | |
4358 | alpha_gp_register = AXP_REG_GP; | |
4359 | as_warn (_("Bad base register, using $%d."), alpha_gp_register); | |
4360 | } | |
4361 | ||
4362 | demand_empty_rest_of_line (); | |
4363 | } | |
4364 | ||
4365 | /* Handle the .align pseudo-op. This aligns to a power of two. It | |
4366 | also adjusts any current instruction label. We treat this the same | |
4367 | way the MIPS port does: .align 0 turns off auto alignment. */ | |
4368 | ||
4369 | static void | |
4370 | s_alpha_align (ignore) | |
4371 | int ignore; | |
4372 | { | |
4373 | int align; | |
4374 | char fill, *pfill; | |
4375 | long max_alignment = 15; | |
4376 | ||
4377 | align = get_absolute_expression (); | |
4378 | if (align > max_alignment) | |
4379 | { | |
4380 | align = max_alignment; | |
4381 | as_bad (_("Alignment too large: %d. assumed"), align); | |
4382 | } | |
4383 | else if (align < 0) | |
4384 | { | |
4385 | as_warn (_("Alignment negative: 0 assumed")); | |
4386 | align = 0; | |
4387 | } | |
4388 | ||
4389 | if (*input_line_pointer == ',') | |
4390 | { | |
4391 | input_line_pointer++; | |
4392 | fill = get_absolute_expression (); | |
4393 | pfill = &fill; | |
4394 | } | |
4395 | else | |
4396 | pfill = NULL; | |
4397 | ||
4398 | if (align != 0) | |
4399 | { | |
4400 | alpha_auto_align_on = 1; | |
4401 | alpha_align (align, pfill, alpha_insn_label, 1); | |
4402 | } | |
4403 | else | |
4404 | { | |
4405 | alpha_auto_align_on = 0; | |
4406 | } | |
4407 | ||
4408 | demand_empty_rest_of_line (); | |
4409 | } | |
4410 | ||
4411 | /* Hook the normal string processor to reset known alignment. */ | |
4412 | ||
4413 | static void | |
4414 | s_alpha_stringer (terminate) | |
4415 | int terminate; | |
4416 | { | |
4417 | alpha_current_align = 0; | |
4418 | alpha_insn_label = NULL; | |
4419 | stringer (terminate); | |
4420 | } | |
4421 | ||
4422 | /* Hook the normal space processing to reset known alignment. */ | |
4423 | ||
4424 | static void | |
4425 | s_alpha_space (ignore) | |
4426 | int ignore; | |
4427 | { | |
4428 | alpha_current_align = 0; | |
4429 | alpha_insn_label = NULL; | |
4430 | s_space (ignore); | |
4431 | } | |
4432 | ||
4433 | /* Hook into cons for auto-alignment. */ | |
4434 | ||
4435 | void | |
4436 | alpha_cons_align (size) | |
4437 | int size; | |
4438 | { | |
4439 | int log_size; | |
4440 | ||
4441 | log_size = 0; | |
4442 | while ((size >>= 1) != 0) | |
4443 | ++log_size; | |
4444 | ||
4445 | if (alpha_auto_align_on && alpha_current_align < log_size) | |
4446 | alpha_align (log_size, (char *) NULL, alpha_insn_label, 0); | |
4447 | if (alpha_current_align > log_size) | |
4448 | alpha_current_align = log_size; | |
4449 | alpha_insn_label = NULL; | |
4450 | } | |
4451 | ||
4452 | /* Here come the .uword, .ulong, and .uquad explicitly unaligned | |
4453 | pseudos. We just turn off auto-alignment and call down to cons. */ | |
4454 | ||
4455 | static void | |
4456 | s_alpha_ucons (bytes) | |
4457 | int bytes; | |
4458 | { | |
4459 | int hold = alpha_auto_align_on; | |
4460 | alpha_auto_align_on = 0; | |
4461 | cons (bytes); | |
4462 | alpha_auto_align_on = hold; | |
4463 | } | |
4464 | ||
4465 | /* Switch the working cpu type. */ | |
4466 | ||
4467 | static void | |
4468 | s_alpha_arch (ignored) | |
4469 | int ignored; | |
4470 | { | |
4471 | char *name, ch; | |
4472 | const struct cpu_type *p; | |
4473 | ||
4474 | SKIP_WHITESPACE (); | |
4475 | name = input_line_pointer; | |
4476 | ch = get_symbol_end (); | |
4477 | ||
4478 | for (p = cpu_types; p->name; ++p) | |
4479 | if (strcmp(name, p->name) == 0) | |
4480 | { | |
4481 | alpha_target_name = p->name, alpha_target = p->flags; | |
4482 | goto found; | |
4483 | } | |
4484 | as_warn("Unknown CPU identifier `%s'", name); | |
4485 | ||
4486 | found: | |
4487 | *input_line_pointer = ch; | |
4488 | demand_empty_rest_of_line (); | |
4489 | } | |
4490 | ||
4491 | \f | |
4492 | ||
4493 | #ifdef DEBUG1 | |
4494 | /* print token expression with alpha specific extension. */ | |
4495 | ||
4496 | static void | |
4497 | alpha_print_token(f, exp) | |
4498 | FILE *f; | |
4499 | const expressionS *exp; | |
4500 | { | |
4501 | switch (exp->X_op) | |
4502 | { | |
4503 | case O_cpregister: | |
4504 | putc (',', f); | |
4505 | /* FALLTHRU */ | |
4506 | case O_pregister: | |
4507 | putc ('(', f); | |
4508 | { | |
4509 | expressionS nexp = *exp; | |
4510 | nexp.X_op = O_register; | |
4511 | print_expr (f, &nexp); | |
4512 | } | |
4513 | putc (')', f); | |
4514 | break; | |
4515 | default: | |
4516 | print_expr (f, exp); | |
4517 | break; | |
4518 | } | |
4519 | return; | |
4520 | } | |
4521 | #endif | |
4522 | \f | |
4523 | /* The target specific pseudo-ops which we support. */ | |
4524 | ||
4525 | const pseudo_typeS md_pseudo_table[] = | |
4526 | { | |
4527 | #ifdef OBJ_ECOFF | |
4528 | {"comm", s_alpha_comm, 0}, /* osf1 compiler does this */ | |
4529 | {"rdata", s_alpha_rdata, 0}, | |
4530 | #endif | |
4531 | {"text", s_alpha_text, 0}, | |
4532 | {"data", s_alpha_data, 0}, | |
4533 | #ifdef OBJ_ECOFF | |
4534 | {"sdata", s_alpha_sdata, 0}, | |
4535 | #endif | |
4536 | #ifdef OBJ_ELF | |
4537 | {"section", s_alpha_section, 0}, | |
4538 | {"section.s", s_alpha_section, 0}, | |
4539 | {"sect", s_alpha_section, 0}, | |
4540 | {"sect.s", s_alpha_section, 0}, | |
4541 | #endif | |
4542 | #ifdef OBJ_EVAX | |
4543 | { "pdesc", s_alpha_pdesc, 0}, | |
4544 | { "name", s_alpha_name, 0}, | |
4545 | { "linkage", s_alpha_linkage, 0}, | |
4546 | { "code_address", s_alpha_code_address, 0}, | |
4547 | { "ent", s_alpha_ent, 0}, | |
4548 | { "frame", s_alpha_frame, 0}, | |
4549 | { "fp_save", s_alpha_fp_save, 0}, | |
4550 | { "mask", s_alpha_mask, 0}, | |
4551 | { "fmask", s_alpha_fmask, 0}, | |
4552 | { "end", s_alpha_end, 0}, | |
4553 | { "file", s_alpha_file, 0}, | |
4554 | { "rdata", s_alpha_section, 1}, | |
4555 | { "comm", s_alpha_comm, 0}, | |
4556 | { "link", s_alpha_section, 3}, | |
4557 | { "ctors", s_alpha_section, 4}, | |
4558 | { "dtors", s_alpha_section, 5}, | |
4559 | #endif | |
4560 | #ifdef OBJ_ELF | |
4561 | /* Frame related pseudos. */ | |
4562 | {"ent", s_alpha_ent, 0}, | |
4563 | {"end", s_alpha_end, 0}, | |
4564 | {"mask", s_alpha_mask, 0}, | |
4565 | {"fmask", s_alpha_mask, 1}, | |
4566 | {"frame", s_alpha_frame, 0}, | |
4567 | {"prologue", s_alpha_prologue, 0}, | |
4568 | /* COFF debugging related pseudos. */ | |
4569 | {"begin", s_alpha_coff_wrapper, 0}, | |
4570 | {"bend", s_alpha_coff_wrapper, 1}, | |
4571 | {"def", s_alpha_coff_wrapper, 2}, | |
4572 | {"dim", s_alpha_coff_wrapper, 3}, | |
4573 | {"endef", s_alpha_coff_wrapper, 4}, | |
4574 | {"file", s_alpha_coff_wrapper, 5}, | |
4575 | {"scl", s_alpha_coff_wrapper, 6}, | |
4576 | {"tag", s_alpha_coff_wrapper, 7}, | |
4577 | {"val", s_alpha_coff_wrapper, 8}, | |
4578 | {"loc", s_alpha_coff_wrapper, 9}, | |
4579 | #else | |
4580 | {"prologue", s_ignore, 0}, | |
4581 | #endif | |
4582 | {"gprel32", s_alpha_gprel32, 0}, | |
4583 | {"t_floating", s_alpha_float_cons, 'd'}, | |
4584 | {"s_floating", s_alpha_float_cons, 'f'}, | |
4585 | {"f_floating", s_alpha_float_cons, 'F'}, | |
4586 | {"g_floating", s_alpha_float_cons, 'G'}, | |
4587 | {"d_floating", s_alpha_float_cons, 'D'}, | |
4588 | ||
4589 | {"proc", s_alpha_proc, 0}, | |
4590 | {"aproc", s_alpha_proc, 1}, | |
4591 | {"set", s_alpha_set, 0}, | |
4592 | {"reguse", s_ignore, 0}, | |
4593 | {"livereg", s_ignore, 0}, | |
4594 | {"base", s_alpha_base, 0}, /*??*/ | |
4595 | {"option", s_ignore, 0}, | |
4596 | {"aent", s_ignore, 0}, | |
4597 | {"ugen", s_ignore, 0}, | |
4598 | {"eflag", s_ignore, 0}, | |
4599 | ||
4600 | {"align", s_alpha_align, 0}, | |
4601 | {"double", s_alpha_float_cons, 'd'}, | |
4602 | {"float", s_alpha_float_cons, 'f'}, | |
4603 | {"single", s_alpha_float_cons, 'f'}, | |
4604 | {"ascii", s_alpha_stringer, 0}, | |
4605 | {"asciz", s_alpha_stringer, 1}, | |
4606 | {"string", s_alpha_stringer, 1}, | |
4607 | {"space", s_alpha_space, 0}, | |
4608 | {"skip", s_alpha_space, 0}, | |
4609 | {"zero", s_alpha_space, 0}, | |
4610 | ||
4611 | /* Unaligned data pseudos. */ | |
4612 | {"uword", s_alpha_ucons, 2}, | |
4613 | {"ulong", s_alpha_ucons, 4}, | |
4614 | {"uquad", s_alpha_ucons, 8}, | |
4615 | ||
4616 | #ifdef OBJ_ELF | |
4617 | /* Dwarf wants these versions of unaligned. */ | |
4618 | {"2byte", s_alpha_ucons, 2}, | |
4619 | {"4byte", s_alpha_ucons, 4}, | |
4620 | {"8byte", s_alpha_ucons, 8}, | |
4621 | #endif | |
4622 | ||
4623 | /* We don't do any optimizing, so we can safely ignore these. */ | |
4624 | {"noalias", s_ignore, 0}, | |
4625 | {"alias", s_ignore, 0}, | |
4626 | ||
4627 | {"arch", s_alpha_arch, 0}, | |
4628 | ||
4629 | {NULL, 0, 0}, | |
4630 | }; | |
4631 | ||
4632 | \f | |
4633 | /* Build a BFD section with its flags set appropriately for the .lita, | |
4634 | .lit8, or .lit4 sections. */ | |
4635 | ||
4636 | static void | |
4637 | create_literal_section (name, secp, symp) | |
4638 | const char *name; | |
4639 | segT *secp; | |
4640 | symbolS **symp; | |
4641 | { | |
4642 | segT current_section = now_seg; | |
4643 | int current_subsec = now_subseg; | |
4644 | segT new_sec; | |
4645 | ||
4646 | *secp = new_sec = subseg_new (name, 0); | |
4647 | subseg_set (current_section, current_subsec); | |
4648 | bfd_set_section_alignment (stdoutput, new_sec, 4); | |
4649 | bfd_set_section_flags (stdoutput, new_sec, | |
4650 | SEC_RELOC | SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
4651 | | SEC_DATA); | |
4652 | ||
4653 | S_CLEAR_EXTERNAL (*symp = section_symbol (new_sec)); | |
4654 | } | |
4655 | ||
4656 | #ifdef OBJ_ECOFF | |
4657 | ||
4658 | /* @@@ GP selection voodoo. All of this seems overly complicated and | |
4659 | unnecessary; which is the primary reason it's for ECOFF only. */ | |
4660 | ||
4661 | static inline void | |
4662 | maybe_set_gp (sec) | |
4663 | asection *sec; | |
4664 | { | |
4665 | bfd_vma vma; | |
4666 | if (!sec) | |
4667 | return; | |
4668 | vma = bfd_get_section_vma (foo, sec); | |
4669 | if (vma && vma < alpha_gp_value) | |
4670 | alpha_gp_value = vma; | |
4671 | } | |
4672 | ||
4673 | static void | |
4674 | select_gp_value () | |
4675 | { | |
4676 | assert (alpha_gp_value == 0); | |
4677 | ||
4678 | /* Get minus-one in whatever width... */ | |
4679 | alpha_gp_value = 0; alpha_gp_value--; | |
4680 | ||
4681 | /* Select the smallest VMA of these existing sections. */ | |
4682 | maybe_set_gp (alpha_lita_section); | |
4683 | #if 0 | |
4684 | /* These were disabled before -- should we use them? */ | |
4685 | maybe_set_gp (sdata); | |
4686 | maybe_set_gp (lit8_sec); | |
4687 | maybe_set_gp (lit4_sec); | |
4688 | #endif | |
4689 | ||
4690 | /* @@ Will a simple 0x8000 work here? If not, why not? */ | |
4691 | #define GP_ADJUSTMENT (0x8000 - 0x10) | |
4692 | ||
4693 | alpha_gp_value += GP_ADJUSTMENT; | |
4694 | ||
4695 | S_SET_VALUE (alpha_gp_symbol, alpha_gp_value); | |
4696 | ||
4697 | #ifdef DEBUG1 | |
4698 | printf (_("Chose GP value of %lx\n"), alpha_gp_value); | |
4699 | #endif | |
4700 | } | |
4701 | #endif /* OBJ_ECOFF */ | |
4702 | ||
4703 | /* Called internally to handle all alignment needs. This takes care | |
4704 | of eliding calls to frag_align if'n the cached current alignment | |
4705 | says we've already got it, as well as taking care of the auto-align | |
4706 | feature wrt labels. */ | |
4707 | ||
4708 | static void | |
4709 | alpha_align (n, pfill, label, force) | |
4710 | int n; | |
4711 | char *pfill; | |
4712 | symbolS *label; | |
4713 | int force; | |
4714 | { | |
4715 | if (alpha_current_align >= n) | |
4716 | return; | |
4717 | ||
4718 | if (pfill == NULL) | |
4719 | { | |
4720 | if (n > 2 | |
4721 | && (bfd_get_section_flags (stdoutput, now_seg) & SEC_CODE) != 0) | |
4722 | { | |
4723 | static char const unop[4] = { 0x00, 0x00, 0xe0, 0x2f }; | |
4724 | static char const nopunop[8] = { | |
4725 | 0x1f, 0x04, 0xff, 0x47, | |
4726 | 0x00, 0x00, 0xe0, 0x2f | |
4727 | }; | |
4728 | ||
4729 | /* First, make sure we're on a four-byte boundary, in case | |
4730 | someone has been putting .byte values into the text | |
4731 | section. The DEC assembler silently fills with unaligned | |
4732 | no-op instructions. This will zero-fill, then nop-fill | |
4733 | with proper alignment. */ | |
4734 | if (alpha_current_align < 2) | |
4735 | frag_align (2, 0, 0); | |
4736 | if (alpha_current_align < 3) | |
4737 | frag_align_pattern (3, unop, sizeof unop, 0); | |
4738 | if (n > 3) | |
4739 | frag_align_pattern (n, nopunop, sizeof nopunop, 0); | |
4740 | } | |
4741 | else | |
4742 | frag_align (n, 0, 0); | |
4743 | } | |
4744 | else | |
4745 | frag_align (n, *pfill, 0); | |
4746 | ||
4747 | alpha_current_align = n; | |
4748 | ||
4749 | if (label != NULL) | |
4750 | { | |
4751 | assert (S_GET_SEGMENT (label) == now_seg); | |
49309057 | 4752 | symbol_set_frag (label, frag_now); |
252b5132 RH |
4753 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
4754 | } | |
4755 | ||
4756 | record_alignment(now_seg, n); | |
4757 | ||
4758 | /* ??? if alpha_flag_relax && force && elf, record the requested alignment | |
4759 | in a reloc for the linker to see. */ | |
4760 | } | |
4761 | ||
4762 | /* The Alpha has support for some VAX floating point types, as well as for | |
4763 | IEEE floating point. We consider IEEE to be the primary floating point | |
4764 | format, and sneak in the VAX floating point support here. */ | |
4765 | #define md_atof vax_md_atof | |
4766 | #include "config/atof-vax.c" |