Commit | Line | Data |
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252b5132 | 1 | /* tc-alpha.c - Processor-specific code for the DEC Alpha AXP CPU. |
f7e42eb4 NC |
2 | Copyright 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
4 | Contributed by Carnegie Mellon University, 1993. |
5 | Written by Alessandro Forin, based on earlier gas-1.38 target CPU files. | |
6 | Modified by Ken Raeburn for gas-2.x and ECOFF support. | |
7 | Modified by Richard Henderson for ELF support. | |
9de8d8f1 | 8 | Modified by Klaus K"ampf for EVAX (OpenVMS/Alpha) support. |
252b5132 RH |
9 | |
10 | This file is part of GAS, the GNU Assembler. | |
11 | ||
12 | GAS is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; either version 2, or (at your option) | |
15 | any later version. | |
16 | ||
17 | GAS is distributed in the hope that it will be useful, | |
18 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | GNU General Public License for more details. | |
21 | ||
22 | You should have received a copy of the GNU General Public License | |
23 | along with GAS; see the file COPYING. If not, write to the Free | |
24 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
25 | 02111-1307, USA. */ | |
26 | ||
27 | /* | |
28 | * Mach Operating System | |
29 | * Copyright (c) 1993 Carnegie Mellon University | |
30 | * All Rights Reserved. | |
31 | * | |
32 | * Permission to use, copy, modify and distribute this software and its | |
33 | * documentation is hereby granted, provided that both the copyright | |
34 | * notice and this permission notice appear in all copies of the | |
35 | * software, derivative works or modified versions, and any portions | |
36 | * thereof, and that both notices appear in supporting documentation. | |
37 | * | |
38 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS | |
39 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR | |
40 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
41 | * | |
42 | * Carnegie Mellon requests users of this software to return to | |
43 | * | |
44 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
45 | * School of Computer Science | |
46 | * Carnegie Mellon University | |
47 | * Pittsburgh PA 15213-3890 | |
48 | * | |
49 | * any improvements or extensions that they make and grant Carnegie the | |
50 | * rights to redistribute these changes. | |
51 | */ | |
52 | ||
53 | #include "as.h" | |
54 | #include "subsegs.h" | |
43b4c25e | 55 | #include "struc-symbol.h" |
252b5132 RH |
56 | #include "ecoff.h" |
57 | ||
58 | #include "opcode/alpha.h" | |
59 | ||
60 | #ifdef OBJ_ELF | |
61 | #include "elf/alpha.h" | |
4dc7ead9 | 62 | #include "dwarf2dbg.h" |
252b5132 RH |
63 | #endif |
64 | ||
65 | #include <ctype.h> | |
252b5132 RH |
66 | \f |
67 | /* Local types */ | |
68 | ||
43b4c25e MM |
69 | #define TOKENIZE_ERROR -1 |
70 | #define TOKENIZE_ERROR_REPORT -2 | |
71 | ||
252b5132 RH |
72 | #define MAX_INSN_FIXUPS 2 |
73 | #define MAX_INSN_ARGS 5 | |
74 | ||
66498417 | 75 | struct alpha_fixup { |
252b5132 RH |
76 | expressionS exp; |
77 | bfd_reloc_code_real_type reloc; | |
78 | }; | |
79 | ||
66498417 | 80 | struct alpha_insn { |
252b5132 RH |
81 | unsigned insn; |
82 | int nfixups; | |
83 | struct alpha_fixup fixups[MAX_INSN_FIXUPS]; | |
43b4c25e | 84 | unsigned sequence[MAX_INSN_FIXUPS]; |
252b5132 RH |
85 | }; |
86 | ||
66498417 | 87 | enum alpha_macro_arg { |
43b4c25e MM |
88 | MACRO_EOA = 1, |
89 | MACRO_IR, | |
90 | MACRO_PIR, | |
91 | MACRO_OPIR, | |
92 | MACRO_CPIR, | |
93 | MACRO_FPR, | |
94 | MACRO_EXP, | |
95 | MACRO_LITERAL, | |
96 | MACRO_BASE, | |
97 | MACRO_BYTOFF, | |
98 | MACRO_JSR | |
252b5132 RH |
99 | }; |
100 | ||
66498417 | 101 | struct alpha_macro { |
252b5132 RH |
102 | const char *name; |
103 | void (*emit) PARAMS ((const expressionS *, int, const PTR)); | |
104 | const PTR arg; | |
105 | enum alpha_macro_arg argsets[16]; | |
106 | }; | |
107 | ||
1dab94dd | 108 | /* Extra expression types. */ |
252b5132 | 109 | |
446a06c9 MM |
110 | #define O_pregister O_md1 /* O_register, in parentheses */ |
111 | #define O_cpregister O_md2 /* + a leading comma */ | |
252b5132 | 112 | |
43b4c25e MM |
113 | #ifdef RELOC_OP_P |
114 | /* Note, the alpha_reloc_op table below depends on the ordering | |
115 | of O_literal .. O_gprelow. */ | |
116 | #define O_literal O_md3 /* !literal relocation */ | |
117 | #define O_lituse_base O_md4 /* !lituse_base relocation */ | |
118 | #define O_lituse_bytoff O_md5 /* !lituse_bytoff relocation */ | |
119 | #define O_lituse_jsr O_md6 /* !lituse_jsr relocation */ | |
120 | #define O_gpdisp O_md7 /* !gpdisp relocation */ | |
121 | #define O_gprelhigh O_md8 /* !gprelhigh relocation */ | |
122 | #define O_gprellow O_md9 /* !gprellow relocation */ | |
123 | ||
124 | #define USER_RELOC_P(R) ((R) >= O_literal && (R) <= O_gprellow) | |
125 | #endif | |
126 | ||
252b5132 RH |
127 | /* Macros for extracting the type and number of encoded register tokens */ |
128 | ||
129 | #define is_ir_num(x) (((x) & 32) == 0) | |
130 | #define is_fpr_num(x) (((x) & 32) != 0) | |
131 | #define regno(x) ((x) & 31) | |
132 | ||
133 | /* Something odd inherited from the old assembler */ | |
134 | ||
135 | #define note_gpreg(R) (alpha_gprmask |= (1 << (R))) | |
136 | #define note_fpreg(R) (alpha_fprmask |= (1 << (R))) | |
137 | ||
138 | /* Predicates for 16- and 32-bit ranges */ | |
139 | /* XXX: The non-shift version appears to trigger a compiler bug when | |
140 | cross-assembling from x86 w/ gcc 2.7.2. */ | |
141 | ||
142 | #if 1 | |
143 | #define range_signed_16(x) \ | |
bc805888 | 144 | (((offsetT) (x) >> 15) == 0 || ((offsetT) (x) >> 15) == -1) |
252b5132 | 145 | #define range_signed_32(x) \ |
bc805888 | 146 | (((offsetT) (x) >> 31) == 0 || ((offsetT) (x) >> 31) == -1) |
252b5132 | 147 | #else |
32ff5c2e KH |
148 | #define range_signed_16(x) ((offsetT) (x) >= -(offsetT) 0x8000 && \ |
149 | (offsetT) (x) <= (offsetT) 0x7FFF) | |
150 | #define range_signed_32(x) ((offsetT) (x) >= -(offsetT) 0x80000000 && \ | |
151 | (offsetT) (x) <= (offsetT) 0x7FFFFFFF) | |
252b5132 RH |
152 | #endif |
153 | ||
154 | /* Macros for sign extending from 16- and 32-bits. */ | |
155 | /* XXX: The cast macros will work on all the systems that I care about, | |
156 | but really a predicate should be found to use the non-cast forms. */ | |
157 | ||
158 | #if 1 | |
bc805888 KH |
159 | #define sign_extend_16(x) ((short) (x)) |
160 | #define sign_extend_32(x) ((int) (x)) | |
252b5132 | 161 | #else |
bc805888 KH |
162 | #define sign_extend_16(x) ((offsetT) (((x) & 0xFFFF) ^ 0x8000) - 0x8000) |
163 | #define sign_extend_32(x) ((offsetT) (((x) & 0xFFFFFFFF) \ | |
252b5132 RH |
164 | ^ 0x80000000) - 0x80000000) |
165 | #endif | |
166 | ||
167 | /* Macros to build tokens */ | |
168 | ||
32ff5c2e | 169 | #define set_tok_reg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
170 | (t).X_op = O_register, \ |
171 | (t).X_add_number = (r)) | |
32ff5c2e | 172 | #define set_tok_preg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
173 | (t).X_op = O_pregister, \ |
174 | (t).X_add_number = (r)) | |
32ff5c2e | 175 | #define set_tok_cpreg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
176 | (t).X_op = O_cpregister, \ |
177 | (t).X_add_number = (r)) | |
32ff5c2e | 178 | #define set_tok_freg(t, r) (memset (&(t), 0, sizeof (t)), \ |
252b5132 | 179 | (t).X_op = O_register, \ |
66498417 | 180 | (t).X_add_number = (r) + 32) |
32ff5c2e | 181 | #define set_tok_sym(t, s, a) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
182 | (t).X_op = O_symbol, \ |
183 | (t).X_add_symbol = (s), \ | |
184 | (t).X_add_number = (a)) | |
32ff5c2e | 185 | #define set_tok_const(t, n) (memset (&(t), 0, sizeof (t)), \ |
252b5132 RH |
186 | (t).X_op = O_constant, \ |
187 | (t).X_add_number = (n)) | |
252b5132 RH |
188 | \f |
189 | /* Prototypes for all local functions */ | |
190 | ||
191 | static int tokenize_arguments PARAMS ((char *, expressionS *, int)); | |
192 | static const struct alpha_opcode *find_opcode_match | |
193 | PARAMS ((const struct alpha_opcode *, const expressionS *, int *, int *)); | |
194 | static const struct alpha_macro *find_macro_match | |
195 | PARAMS ((const struct alpha_macro *, const expressionS *, int *)); | |
196 | static unsigned insert_operand | |
197 | PARAMS ((unsigned, const struct alpha_operand *, offsetT, char *, unsigned)); | |
198 | static void assemble_insn | |
199 | PARAMS ((const struct alpha_opcode *, const expressionS *, int, | |
200 | struct alpha_insn *)); | |
201 | static void emit_insn PARAMS ((struct alpha_insn *)); | |
202 | static void assemble_tokens_to_insn | |
203 | PARAMS ((const char *, const expressionS *, int, struct alpha_insn *)); | |
204 | static void assemble_tokens | |
205 | PARAMS ((const char *, const expressionS *, int, int)); | |
206 | ||
207 | static int load_expression | |
43b4c25e MM |
208 | PARAMS ((int, const expressionS *, int *, expressionS *, |
209 | const expressionS *)); | |
252b5132 RH |
210 | |
211 | static void emit_ldgp PARAMS ((const expressionS *, int, const PTR)); | |
212 | static void emit_division PARAMS ((const expressionS *, int, const PTR)); | |
213 | static void emit_lda PARAMS ((const expressionS *, int, const PTR)); | |
214 | static void emit_ldah PARAMS ((const expressionS *, int, const PTR)); | |
215 | static void emit_ir_load PARAMS ((const expressionS *, int, const PTR)); | |
216 | static void emit_loadstore PARAMS ((const expressionS *, int, const PTR)); | |
217 | static void emit_jsrjmp PARAMS ((const expressionS *, int, const PTR)); | |
218 | static void emit_ldX PARAMS ((const expressionS *, int, const PTR)); | |
219 | static void emit_ldXu PARAMS ((const expressionS *, int, const PTR)); | |
220 | static void emit_uldX PARAMS ((const expressionS *, int, const PTR)); | |
221 | static void emit_uldXu PARAMS ((const expressionS *, int, const PTR)); | |
222 | static void emit_ldil PARAMS ((const expressionS *, int, const PTR)); | |
223 | static void emit_stX PARAMS ((const expressionS *, int, const PTR)); | |
224 | static void emit_ustX PARAMS ((const expressionS *, int, const PTR)); | |
225 | static void emit_sextX PARAMS ((const expressionS *, int, const PTR)); | |
226 | static void emit_retjcr PARAMS ((const expressionS *, int, const PTR)); | |
227 | ||
228 | static void s_alpha_text PARAMS ((int)); | |
229 | static void s_alpha_data PARAMS ((int)); | |
230 | #ifndef OBJ_ELF | |
231 | static void s_alpha_comm PARAMS ((int)); | |
232 | static void s_alpha_rdata PARAMS ((int)); | |
233 | #endif | |
234 | #ifdef OBJ_ECOFF | |
235 | static void s_alpha_sdata PARAMS ((int)); | |
236 | #endif | |
237 | #ifdef OBJ_ELF | |
238 | static void s_alpha_section PARAMS ((int)); | |
239 | static void s_alpha_ent PARAMS ((int)); | |
240 | static void s_alpha_end PARAMS ((int)); | |
241 | static void s_alpha_mask PARAMS ((int)); | |
242 | static void s_alpha_frame PARAMS ((int)); | |
243 | static void s_alpha_prologue PARAMS ((int)); | |
4dc7ead9 RH |
244 | static void s_alpha_file PARAMS ((int)); |
245 | static void s_alpha_loc PARAMS ((int)); | |
a8316fe2 | 246 | static void s_alpha_stab PARAMS ((int)); |
252b5132 RH |
247 | static void s_alpha_coff_wrapper PARAMS ((int)); |
248 | #endif | |
249 | #ifdef OBJ_EVAX | |
250 | static void s_alpha_section PARAMS ((int)); | |
251 | #endif | |
252 | static void s_alpha_gprel32 PARAMS ((int)); | |
253 | static void s_alpha_float_cons PARAMS ((int)); | |
254 | static void s_alpha_proc PARAMS ((int)); | |
255 | static void s_alpha_set PARAMS ((int)); | |
256 | static void s_alpha_base PARAMS ((int)); | |
257 | static void s_alpha_align PARAMS ((int)); | |
258 | static void s_alpha_stringer PARAMS ((int)); | |
259 | static void s_alpha_space PARAMS ((int)); | |
260 | ||
261 | static void create_literal_section PARAMS ((const char *, segT *, symbolS **)); | |
262 | #ifndef OBJ_ELF | |
263 | static void select_gp_value PARAMS ((void)); | |
264 | #endif | |
265 | static void alpha_align PARAMS ((int, char *, symbolS *, int)); | |
266 | ||
43b4c25e MM |
267 | #ifdef RELOC_OP_P |
268 | static void alpha_adjust_symtab_relocs PARAMS ((bfd *, asection *, PTR)); | |
269 | #endif | |
252b5132 RH |
270 | \f |
271 | /* Generic assembler global variables which must be defined by all | |
272 | targets. */ | |
273 | ||
274 | /* Characters which always start a comment. */ | |
275 | const char comment_chars[] = "#"; | |
276 | ||
277 | /* Characters which start a comment at the beginning of a line. */ | |
278 | const char line_comment_chars[] = "#"; | |
279 | ||
280 | /* Characters which may be used to separate multiple commands on a | |
281 | single line. */ | |
282 | const char line_separator_chars[] = ";"; | |
283 | ||
284 | /* Characters which are used to indicate an exponent in a floating | |
285 | point number. */ | |
286 | const char EXP_CHARS[] = "eE"; | |
287 | ||
288 | /* Characters which mean that a number is a floating point constant, | |
289 | as in 0d1.0. */ | |
290 | #if 0 | |
291 | const char FLT_CHARS[] = "dD"; | |
292 | #else | |
293 | /* XXX: Do all of these really get used on the alpha?? */ | |
294 | char FLT_CHARS[] = "rRsSfFdDxXpP"; | |
295 | #endif | |
296 | ||
297 | #ifdef OBJ_EVAX | |
298 | const char *md_shortopts = "Fm:g+1h:HG:"; | |
299 | #else | |
300 | const char *md_shortopts = "Fm:gG:"; | |
301 | #endif | |
302 | ||
303 | struct option md_longopts[] = { | |
304 | #define OPTION_32ADDR (OPTION_MD_BASE) | |
305 | { "32addr", no_argument, NULL, OPTION_32ADDR }, | |
66498417 | 306 | #define OPTION_RELAX (OPTION_32ADDR + 1) |
252b5132 RH |
307 | { "relax", no_argument, NULL, OPTION_RELAX }, |
308 | #ifdef OBJ_ELF | |
66498417 KH |
309 | #define OPTION_MDEBUG (OPTION_RELAX + 1) |
310 | #define OPTION_NO_MDEBUG (OPTION_MDEBUG + 1) | |
252b5132 RH |
311 | { "mdebug", no_argument, NULL, OPTION_MDEBUG }, |
312 | { "no-mdebug", no_argument, NULL, OPTION_NO_MDEBUG }, | |
313 | #endif | |
314 | { NULL, no_argument, NULL, 0 } | |
315 | }; | |
316 | ||
bc805888 | 317 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 RH |
318 | \f |
319 | #ifdef OBJ_EVAX | |
320 | #define AXP_REG_R0 0 | |
321 | #define AXP_REG_R16 16 | |
322 | #define AXP_REG_R17 17 | |
323 | #undef AXP_REG_T9 | |
324 | #define AXP_REG_T9 22 | |
325 | #undef AXP_REG_T10 | |
326 | #define AXP_REG_T10 23 | |
327 | #undef AXP_REG_T11 | |
328 | #define AXP_REG_T11 24 | |
329 | #undef AXP_REG_T12 | |
330 | #define AXP_REG_T12 25 | |
331 | #define AXP_REG_AI 25 | |
332 | #undef AXP_REG_FP | |
333 | #define AXP_REG_FP 29 | |
334 | ||
335 | #undef AXP_REG_GP | |
336 | #define AXP_REG_GP AXP_REG_PV | |
337 | #endif /* OBJ_EVAX */ | |
338 | ||
339 | /* The cpu for which we are generating code */ | |
340 | static unsigned alpha_target = AXP_OPCODE_BASE; | |
341 | static const char *alpha_target_name = "<all>"; | |
342 | ||
343 | /* The hash table of instruction opcodes */ | |
344 | static struct hash_control *alpha_opcode_hash; | |
345 | ||
346 | /* The hash table of macro opcodes */ | |
347 | static struct hash_control *alpha_macro_hash; | |
348 | ||
349 | #ifdef OBJ_ECOFF | |
350 | /* The $gp relocation symbol */ | |
351 | static symbolS *alpha_gp_symbol; | |
352 | ||
353 | /* XXX: what is this, and why is it exported? */ | |
354 | valueT alpha_gp_value; | |
355 | #endif | |
356 | ||
357 | /* The current $gp register */ | |
358 | static int alpha_gp_register = AXP_REG_GP; | |
359 | ||
360 | /* A table of the register symbols */ | |
361 | static symbolS *alpha_register_table[64]; | |
362 | ||
363 | /* Constant sections, or sections of constants */ | |
364 | #ifdef OBJ_ECOFF | |
365 | static segT alpha_lita_section; | |
366 | static segT alpha_lit4_section; | |
367 | #endif | |
368 | #ifdef OBJ_EVAX | |
369 | static segT alpha_link_section; | |
370 | static segT alpha_ctors_section; | |
371 | static segT alpha_dtors_section; | |
372 | #endif | |
373 | static segT alpha_lit8_section; | |
374 | ||
1dab94dd | 375 | /* Symbols referring to said sections. */ |
252b5132 RH |
376 | #ifdef OBJ_ECOFF |
377 | static symbolS *alpha_lita_symbol; | |
378 | static symbolS *alpha_lit4_symbol; | |
379 | #endif | |
380 | #ifdef OBJ_EVAX | |
381 | static symbolS *alpha_link_symbol; | |
382 | static symbolS *alpha_ctors_symbol; | |
383 | static symbolS *alpha_dtors_symbol; | |
384 | #endif | |
385 | static symbolS *alpha_lit8_symbol; | |
386 | ||
387 | /* Literal for .litX+0x8000 within .lita */ | |
388 | #ifdef OBJ_ECOFF | |
389 | static offsetT alpha_lit4_literal; | |
390 | static offsetT alpha_lit8_literal; | |
391 | #endif | |
392 | ||
252b5132 | 393 | #ifdef OBJ_ELF |
4dc7ead9 | 394 | /* The active .ent symbol. */ |
252b5132 RH |
395 | static symbolS *alpha_cur_ent_sym; |
396 | #endif | |
397 | ||
398 | /* Is the assembler not allowed to use $at? */ | |
399 | static int alpha_noat_on = 0; | |
400 | ||
401 | /* Are macros enabled? */ | |
402 | static int alpha_macros_on = 1; | |
403 | ||
404 | /* Are floats disabled? */ | |
405 | static int alpha_nofloats_on = 0; | |
406 | ||
407 | /* Are addresses 32 bit? */ | |
408 | static int alpha_addr32_on = 0; | |
409 | ||
410 | /* Symbol labelling the current insn. When the Alpha gas sees | |
411 | foo: | |
412 | .quad 0 | |
413 | and the section happens to not be on an eight byte boundary, it | |
414 | will align both the symbol and the .quad to an eight byte boundary. */ | |
415 | static symbolS *alpha_insn_label; | |
416 | ||
417 | /* Whether we should automatically align data generation pseudo-ops. | |
418 | .align 0 will turn this off. */ | |
419 | static int alpha_auto_align_on = 1; | |
420 | ||
421 | /* The known current alignment of the current section. */ | |
422 | static int alpha_current_align; | |
423 | ||
424 | /* These are exported to ECOFF code. */ | |
425 | unsigned long alpha_gprmask, alpha_fprmask; | |
426 | ||
427 | /* Whether the debugging option was seen. */ | |
428 | static int alpha_debug; | |
429 | ||
430 | #ifdef OBJ_ELF | |
431 | /* Whether we are emitting an mdebug section. */ | |
a8316fe2 | 432 | int alpha_flag_mdebug = -1; |
252b5132 RH |
433 | #endif |
434 | ||
435 | /* Don't fully resolve relocations, allowing code movement in the linker. */ | |
436 | static int alpha_flag_relax; | |
437 | ||
438 | /* What value to give to bfd_set_gp_size. */ | |
439 | static int g_switch_value = 8; | |
440 | ||
441 | #ifdef OBJ_EVAX | |
442 | /* Collect information about current procedure here. */ | |
443 | static struct { | |
444 | symbolS *symbol; /* proc pdesc symbol */ | |
445 | int pdsckind; | |
446 | int framereg; /* register for frame pointer */ | |
447 | int framesize; /* size of frame */ | |
448 | int rsa_offset; | |
449 | int ra_save; | |
450 | int fp_save; | |
451 | long imask; | |
452 | long fmask; | |
453 | int type; | |
454 | int prologue; | |
455 | } alpha_evax_proc; | |
456 | ||
457 | static int alpha_flag_hash_long_names = 0; /* -+ */ | |
458 | static int alpha_flag_show_after_trunc = 0; /* -H */ | |
459 | ||
460 | /* If the -+ switch is given, then a hash is appended to any name that is | |
461 | * longer than 64 characters, else longer symbol names are truncated. | |
462 | */ | |
463 | ||
43b4c25e MM |
464 | #endif |
465 | \f | |
466 | #ifdef RELOC_OP_P | |
467 | /* A table to map the spelling of a relocation operand into an appropriate | |
468 | bfd_reloc_code_real_type type. The table is assumed to be ordered such | |
469 | that op-O_literal indexes into it. */ | |
470 | ||
471 | #define ALPHA_RELOC_TABLE(op) \ | |
472 | &alpha_reloc_op[ ((!USER_RELOC_P (op)) \ | |
473 | ? (abort (), 0) \ | |
32ff5c2e | 474 | : (int) (op) - (int) O_literal) ] |
43b4c25e MM |
475 | |
476 | #define LITUSE_BASE 1 | |
477 | #define LITUSE_BYTOFF 2 | |
478 | #define LITUSE_JSR 3 | |
479 | ||
480 | static const struct alpha_reloc_op_tag { | |
481 | const char *name; /* string to lookup */ | |
482 | size_t length; /* size of the string */ | |
483 | bfd_reloc_code_real_type reloc; /* relocation before frob */ | |
484 | operatorT op; /* which operator to use */ | |
485 | int lituse; /* addened to specify lituse */ | |
486 | } alpha_reloc_op[] = { | |
487 | ||
488 | { | |
489 | "literal", /* name */ | |
490 | sizeof ("literal")-1, /* length */ | |
491 | BFD_RELOC_ALPHA_USER_LITERAL, /* reloc */ | |
492 | O_literal, /* op */ | |
493 | 0, /* lituse */ | |
494 | }, | |
495 | ||
496 | { | |
497 | "lituse_base", /* name */ | |
498 | sizeof ("lituse_base")-1, /* length */ | |
499 | BFD_RELOC_ALPHA_USER_LITUSE_BASE, /* reloc */ | |
500 | O_lituse_base, /* op */ | |
501 | LITUSE_BASE, /* lituse */ | |
502 | }, | |
503 | ||
504 | { | |
505 | "lituse_bytoff", /* name */ | |
506 | sizeof ("lituse_bytoff")-1, /* length */ | |
507 | BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF, /* reloc */ | |
508 | O_lituse_bytoff, /* op */ | |
509 | LITUSE_BYTOFF, /* lituse */ | |
510 | }, | |
511 | ||
512 | { | |
513 | "lituse_jsr", /* name */ | |
514 | sizeof ("lituse_jsr")-1, /* length */ | |
515 | BFD_RELOC_ALPHA_USER_LITUSE_JSR, /* reloc */ | |
516 | O_lituse_jsr, /* op */ | |
517 | LITUSE_JSR, /* lituse */ | |
518 | }, | |
519 | ||
520 | { | |
521 | "gpdisp", /* name */ | |
522 | sizeof ("gpdisp")-1, /* length */ | |
523 | BFD_RELOC_ALPHA_USER_GPDISP, /* reloc */ | |
524 | O_gpdisp, /* op */ | |
525 | 0, /* lituse */ | |
526 | }, | |
527 | ||
528 | { | |
529 | "gprelhigh", /* name */ | |
530 | sizeof ("gprelhigh")-1, /* length */ | |
531 | BFD_RELOC_ALPHA_USER_GPRELHIGH, /* reloc */ | |
532 | O_gprelhigh, /* op */ | |
533 | 0, /* lituse */ | |
534 | }, | |
535 | ||
536 | { | |
537 | "gprellow", /* name */ | |
538 | sizeof ("gprellow")-1, /* length */ | |
539 | BFD_RELOC_ALPHA_USER_GPRELLOW, /* reloc */ | |
540 | O_gprellow, /* op */ | |
541 | 0, /* lituse */ | |
542 | }, | |
543 | }; | |
544 | ||
545 | static const int alpha_num_reloc_op | |
bc805888 | 546 | = sizeof (alpha_reloc_op) / sizeof (*alpha_reloc_op); |
43b4c25e MM |
547 | |
548 | /* Maximum # digits needed to hold the largest sequence # */ | |
549 | #define ALPHA_RELOC_DIGITS 25 | |
550 | ||
551 | /* Whether a sequence number is valid. */ | |
bc805888 | 552 | #define ALPHA_RELOC_SEQUENCE_OK(X) ((X) > 0 && ((unsigned) (X)) == (X)) |
43b4c25e MM |
553 | |
554 | /* Structure to hold explict sequence information. */ | |
555 | struct alpha_literal_tag | |
556 | { | |
557 | fixS *lituse; /* head of linked list of !literals */ | |
558 | segT segment; /* segment relocs are in or undefined_section*/ | |
559 | int multi_section_p; /* True if more than one section was used */ | |
560 | unsigned sequence; /* sequence # */ | |
561 | unsigned n_literals; /* # of literals */ | |
562 | unsigned n_lituses; /* # of lituses */ | |
563 | char string[1]; /* printable form of sequence to hash with */ | |
564 | }; | |
565 | ||
566 | /* Hash table to link up literals with the appropriate lituse */ | |
567 | static struct hash_control *alpha_literal_hash; | |
252b5132 RH |
568 | #endif |
569 | \f | |
570 | /* A table of CPU names and opcode sets. */ | |
571 | ||
66498417 | 572 | static const struct cpu_type { |
252b5132 RH |
573 | const char *name; |
574 | unsigned flags; | |
66498417 | 575 | } cpu_types[] = { |
252b5132 | 576 | /* Ad hoc convention: cpu number gets palcode, process code doesn't. |
1dab94dd | 577 | This supports usage under DU 4.0b that does ".arch ev4", and |
252b5132 RH |
578 | usage in MILO that does -m21064. Probably something more |
579 | specific like -m21064-pal should be used, but oh well. */ | |
580 | ||
581 | { "21064", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
582 | { "21064a", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
583 | { "21066", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
584 | { "21068", AXP_OPCODE_BASE|AXP_OPCODE_EV4 }, | |
585 | { "21164", AXP_OPCODE_BASE|AXP_OPCODE_EV5 }, | |
586 | { "21164a", AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX }, | |
587 | { "21164pc", (AXP_OPCODE_BASE|AXP_OPCODE_EV5|AXP_OPCODE_BWX | |
588 | |AXP_OPCODE_MAX) }, | |
589 | { "21264", (AXP_OPCODE_BASE|AXP_OPCODE_EV6|AXP_OPCODE_BWX | |
590 | |AXP_OPCODE_MAX|AXP_OPCODE_CIX) }, | |
591 | ||
592 | { "ev4", AXP_OPCODE_BASE }, | |
593 | { "ev45", AXP_OPCODE_BASE }, | |
594 | { "lca45", AXP_OPCODE_BASE }, | |
595 | { "ev5", AXP_OPCODE_BASE }, | |
596 | { "ev56", AXP_OPCODE_BASE|AXP_OPCODE_BWX }, | |
597 | { "pca56", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX }, | |
598 | { "ev6", AXP_OPCODE_BASE|AXP_OPCODE_BWX|AXP_OPCODE_MAX|AXP_OPCODE_CIX }, | |
599 | ||
600 | { "all", AXP_OPCODE_BASE }, | |
446a06c9 | 601 | { 0, 0 } |
252b5132 RH |
602 | }; |
603 | ||
604 | /* The macro table */ | |
605 | ||
606 | static const struct alpha_macro alpha_macros[] = { | |
607 | /* Load/Store macros */ | |
608 | { "lda", emit_lda, NULL, | |
43b4c25e | 609 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_LITERAL, MACRO_BASE, MACRO_EOA } }, |
252b5132 RH |
610 | { "ldah", emit_ldah, NULL, |
611 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
612 | ||
613 | { "ldl", emit_ir_load, "ldl", | |
43b4c25e | 614 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 615 | { "ldl_l", emit_ir_load, "ldl_l", |
43b4c25e | 616 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 617 | { "ldq", emit_ir_load, "ldq", |
43b4c25e | 618 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_LITERAL, MACRO_EOA } }, |
252b5132 | 619 | { "ldq_l", emit_ir_load, "ldq_l", |
43b4c25e | 620 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 621 | { "ldq_u", emit_ir_load, "ldq_u", |
43b4c25e | 622 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 623 | { "ldf", emit_loadstore, "ldf", |
43b4c25e | 624 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 625 | { "ldg", emit_loadstore, "ldg", |
43b4c25e | 626 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 627 | { "lds", emit_loadstore, "lds", |
43b4c25e | 628 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 629 | { "ldt", emit_loadstore, "ldt", |
43b4c25e | 630 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 631 | |
32ff5c2e | 632 | { "ldb", emit_ldX, (PTR) 0, |
43b4c25e | 633 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 634 | { "ldbu", emit_ldXu, (PTR) 0, |
43b4c25e | 635 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 636 | { "ldw", emit_ldX, (PTR) 1, |
43b4c25e | 637 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 638 | { "ldwu", emit_ldXu, (PTR) 1, |
43b4c25e | 639 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 640 | |
32ff5c2e | 641 | { "uldw", emit_uldX, (PTR) 1, |
43b4c25e | 642 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 643 | { "uldwu", emit_uldXu, (PTR) 1, |
43b4c25e | 644 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 645 | { "uldl", emit_uldX, (PTR) 2, |
43b4c25e | 646 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 647 | { "uldlu", emit_uldXu, (PTR) 2, |
43b4c25e | 648 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 649 | { "uldq", emit_uldXu, (PTR) 3, |
43b4c25e | 650 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 RH |
651 | |
652 | { "ldgp", emit_ldgp, NULL, | |
653 | { MACRO_IR, MACRO_EXP, MACRO_PIR, MACRO_EOA } }, | |
654 | ||
655 | { "ldi", emit_lda, NULL, | |
656 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
657 | { "ldil", emit_ldil, NULL, | |
658 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
659 | { "ldiq", emit_lda, NULL, | |
660 | { MACRO_IR, MACRO_EXP, MACRO_EOA } }, | |
661 | #if 0 | |
662 | { "ldif" emit_ldiq, NULL, | |
663 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
664 | { "ldid" emit_ldiq, NULL, | |
665 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
666 | { "ldig" emit_ldiq, NULL, | |
667 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
668 | { "ldis" emit_ldiq, NULL, | |
669 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
670 | { "ldit" emit_ldiq, NULL, | |
671 | { MACRO_FPR, MACRO_EXP, MACRO_EOA } }, | |
672 | #endif | |
673 | ||
674 | { "stl", emit_loadstore, "stl", | |
43b4c25e | 675 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 676 | { "stl_c", emit_loadstore, "stl_c", |
43b4c25e | 677 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 678 | { "stq", emit_loadstore, "stq", |
43b4c25e | 679 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 680 | { "stq_c", emit_loadstore, "stq_c", |
43b4c25e | 681 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 682 | { "stq_u", emit_loadstore, "stq_u", |
43b4c25e | 683 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 684 | { "stf", emit_loadstore, "stf", |
43b4c25e | 685 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 686 | { "stg", emit_loadstore, "stg", |
43b4c25e | 687 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 688 | { "sts", emit_loadstore, "sts", |
43b4c25e | 689 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 690 | { "stt", emit_loadstore, "stt", |
43b4c25e | 691 | { MACRO_FPR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 | 692 | |
32ff5c2e | 693 | { "stb", emit_stX, (PTR) 0, |
43b4c25e | 694 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 695 | { "stw", emit_stX, (PTR) 1, |
43b4c25e | 696 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 697 | { "ustw", emit_ustX, (PTR) 1, |
43b4c25e | 698 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 699 | { "ustl", emit_ustX, (PTR) 2, |
43b4c25e | 700 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
32ff5c2e | 701 | { "ustq", emit_ustX, (PTR) 3, |
43b4c25e | 702 | { MACRO_IR, MACRO_EXP, MACRO_OPIR, MACRO_BASE, MACRO_EOA } }, |
252b5132 RH |
703 | |
704 | /* Arithmetic macros */ | |
705 | #if 0 | |
706 | { "absl" emit_absl, 1, { IR } }, | |
707 | { "absl" emit_absl, 2, { IR, IR } }, | |
708 | { "absl" emit_absl, 2, { EXP, IR } }, | |
709 | { "absq" emit_absq, 1, { IR } }, | |
710 | { "absq" emit_absq, 2, { IR, IR } }, | |
711 | { "absq" emit_absq, 2, { EXP, IR } }, | |
712 | #endif | |
713 | ||
32ff5c2e | 714 | { "sextb", emit_sextX, (PTR) 0, |
252b5132 RH |
715 | { MACRO_IR, MACRO_IR, MACRO_EOA, |
716 | MACRO_IR, MACRO_EOA, | |
717 | /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } }, | |
32ff5c2e | 718 | { "sextw", emit_sextX, (PTR) 1, |
252b5132 RH |
719 | { MACRO_IR, MACRO_IR, MACRO_EOA, |
720 | MACRO_IR, MACRO_EOA, | |
721 | /* MACRO_EXP, MACRO_IR, MACRO_EOA */ } }, | |
722 | ||
723 | { "divl", emit_division, "__divl", | |
724 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
725 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
726 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
727 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
728 | { "divlu", emit_division, "__divlu", | |
729 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
730 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
731 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
732 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
733 | { "divq", emit_division, "__divq", | |
734 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
735 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
736 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
737 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
738 | { "divqu", emit_division, "__divqu", | |
739 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
740 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
741 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
742 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
743 | { "reml", emit_division, "__reml", | |
744 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
745 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
746 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
747 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
748 | { "remlu", emit_division, "__remlu", | |
749 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
750 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
751 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
752 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
753 | { "remq", emit_division, "__remq", | |
754 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
755 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
756 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
757 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
758 | { "remqu", emit_division, "__remqu", | |
759 | { MACRO_IR, MACRO_IR, MACRO_IR, MACRO_EOA, | |
760 | MACRO_IR, MACRO_IR, MACRO_EOA, | |
761 | /* MACRO_IR, MACRO_EXP, MACRO_IR, MACRO_EOA, | |
762 | MACRO_IR, MACRO_EXP, MACRO_EOA */ } }, | |
763 | ||
764 | { "jsr", emit_jsrjmp, "jsr", | |
43b4c25e MM |
765 | { MACRO_PIR, MACRO_EXP, MACRO_JSR, MACRO_EOA, |
766 | MACRO_PIR, MACRO_JSR, MACRO_EOA, | |
767 | MACRO_IR, MACRO_EXP, MACRO_JSR, MACRO_EOA, | |
768 | MACRO_EXP, MACRO_JSR, MACRO_EOA } }, | |
252b5132 | 769 | { "jmp", emit_jsrjmp, "jmp", |
43b4c25e MM |
770 | { MACRO_PIR, MACRO_EXP, MACRO_JSR, MACRO_EOA, |
771 | MACRO_PIR, MACRO_JSR, MACRO_EOA, | |
772 | MACRO_IR, MACRO_EXP, MACRO_JSR, MACRO_EOA, | |
773 | MACRO_EXP, MACRO_JSR, MACRO_EOA } }, | |
252b5132 RH |
774 | { "ret", emit_retjcr, "ret", |
775 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
776 | MACRO_IR, MACRO_EOA, | |
777 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
778 | MACRO_PIR, MACRO_EOA, | |
779 | MACRO_EXP, MACRO_EOA, | |
780 | MACRO_EOA } }, | |
781 | { "jcr", emit_retjcr, "jcr", | |
782 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
783 | MACRO_IR, MACRO_EOA, | |
784 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
785 | MACRO_PIR, MACRO_EOA, | |
786 | MACRO_EXP, MACRO_EOA, | |
787 | MACRO_EOA } }, | |
788 | { "jsr_coroutine", emit_retjcr, "jcr", | |
789 | { MACRO_IR, MACRO_EXP, MACRO_EOA, | |
790 | MACRO_IR, MACRO_EOA, | |
791 | MACRO_PIR, MACRO_EXP, MACRO_EOA, | |
792 | MACRO_PIR, MACRO_EOA, | |
793 | MACRO_EXP, MACRO_EOA, | |
794 | MACRO_EOA } }, | |
795 | }; | |
796 | ||
446a06c9 | 797 | static const unsigned int alpha_num_macros |
bc805888 | 798 | = sizeof (alpha_macros) / sizeof (*alpha_macros); |
252b5132 RH |
799 | \f |
800 | /* Public interface functions */ | |
801 | ||
802 | /* This function is called once, at assembler startup time. It sets | |
803 | up all the tables, etc. that the MD part of the assembler will | |
804 | need, that can be determined before arguments are parsed. */ | |
805 | ||
806 | void | |
807 | md_begin () | |
808 | { | |
809 | unsigned int i; | |
810 | ||
bf29b231 RH |
811 | /* Verify that X_op field is wide enough. */ |
812 | { | |
813 | expressionS e; | |
446a06c9 MM |
814 | e.X_op = O_max; |
815 | assert (e.X_op == O_max); | |
bf29b231 RH |
816 | } |
817 | ||
252b5132 RH |
818 | /* Create the opcode hash table */ |
819 | ||
820 | alpha_opcode_hash = hash_new (); | |
66498417 | 821 | for (i = 0; i < alpha_num_opcodes;) |
252b5132 RH |
822 | { |
823 | const char *name, *retval, *slash; | |
824 | ||
825 | name = alpha_opcodes[i].name; | |
66498417 | 826 | retval = hash_insert (alpha_opcode_hash, name, (PTR) &alpha_opcodes[i]); |
252b5132 RH |
827 | if (retval) |
828 | as_fatal (_("internal error: can't hash opcode `%s': %s"), name, retval); | |
829 | ||
830 | /* Some opcodes include modifiers of various sorts with a "/mod" | |
831 | syntax, like the architecture manual suggests. However, for | |
832 | use with gcc at least, we also need access to those same opcodes | |
833 | without the "/". */ | |
834 | ||
835 | if ((slash = strchr (name, '/')) != NULL) | |
836 | { | |
837 | char *p = xmalloc (strlen (name)); | |
838 | memcpy (p, name, slash - name); | |
839 | strcpy (p + (slash - name), slash + 1); | |
840 | ||
66498417 | 841 | (void) hash_insert (alpha_opcode_hash, p, (PTR) &alpha_opcodes[i]); |
252b5132 RH |
842 | /* Ignore failures -- the opcode table does duplicate some |
843 | variants in different forms, like "hw_stq" and "hw_st/q". */ | |
844 | } | |
845 | ||
846 | while (++i < alpha_num_opcodes | |
847 | && (alpha_opcodes[i].name == name | |
848 | || !strcmp (alpha_opcodes[i].name, name))) | |
849 | continue; | |
850 | } | |
851 | ||
852 | /* Create the macro hash table */ | |
853 | ||
854 | alpha_macro_hash = hash_new (); | |
66498417 | 855 | for (i = 0; i < alpha_num_macros;) |
252b5132 RH |
856 | { |
857 | const char *name, *retval; | |
858 | ||
859 | name = alpha_macros[i].name; | |
66498417 | 860 | retval = hash_insert (alpha_macro_hash, name, (PTR) &alpha_macros[i]); |
252b5132 | 861 | if (retval) |
66498417 KH |
862 | as_fatal (_("internal error: can't hash macro `%s': %s"), |
863 | name, retval); | |
252b5132 RH |
864 | |
865 | while (++i < alpha_num_macros | |
866 | && (alpha_macros[i].name == name | |
867 | || !strcmp (alpha_macros[i].name, name))) | |
868 | continue; | |
869 | } | |
870 | ||
871 | /* Construct symbols for each of the registers */ | |
872 | ||
873 | for (i = 0; i < 32; ++i) | |
874 | { | |
875 | char name[4]; | |
bc805888 | 876 | sprintf (name, "$%d", i); |
32ff5c2e KH |
877 | alpha_register_table[i] = symbol_create (name, reg_section, i, |
878 | &zero_address_frag); | |
252b5132 RH |
879 | } |
880 | for (; i < 64; ++i) | |
881 | { | |
882 | char name[5]; | |
66498417 | 883 | sprintf (name, "$f%d", i - 32); |
32ff5c2e KH |
884 | alpha_register_table[i] = symbol_create (name, reg_section, i, |
885 | &zero_address_frag); | |
252b5132 RH |
886 | } |
887 | ||
888 | /* Create the special symbols and sections we'll be using */ | |
889 | ||
890 | /* So .sbss will get used for tiny objects. */ | |
891 | bfd_set_gp_size (stdoutput, g_switch_value); | |
892 | ||
893 | #ifdef OBJ_ECOFF | |
894 | create_literal_section (".lita", &alpha_lita_section, &alpha_lita_symbol); | |
895 | ||
896 | /* For handling the GP, create a symbol that won't be output in the | |
897 | symbol table. We'll edit it out of relocs later. */ | |
898 | alpha_gp_symbol = symbol_create ("<GP value>", alpha_lita_section, 0x8000, | |
899 | &zero_address_frag); | |
900 | #endif | |
901 | ||
902 | #ifdef OBJ_EVAX | |
903 | create_literal_section (".link", &alpha_link_section, &alpha_link_symbol); | |
904 | #endif | |
905 | ||
906 | #ifdef OBJ_ELF | |
907 | if (ECOFF_DEBUGGING) | |
908 | { | |
32ff5c2e | 909 | segT sec = subseg_new (".mdebug", (subsegT) 0); |
66498417 | 910 | bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY); |
32ff5c2e | 911 | bfd_set_section_alignment (stdoutput, sec, 3); |
252b5132 RH |
912 | } |
913 | #endif /* OBJ_ELF */ | |
914 | ||
32ff5c2e | 915 | subseg_set (text_section, 0); |
43b4c25e MM |
916 | |
917 | #ifdef RELOC_OP_P | |
918 | /* Create literal lookup hash table. */ | |
32ff5c2e | 919 | alpha_literal_hash = hash_new (); |
43b4c25e | 920 | #endif |
252b5132 RH |
921 | } |
922 | ||
923 | /* The public interface to the instruction assembler. */ | |
924 | ||
925 | void | |
926 | md_assemble (str) | |
927 | char *str; | |
928 | { | |
929 | char opname[32]; /* current maximum is 13 */ | |
930 | expressionS tok[MAX_INSN_ARGS]; | |
446a06c9 MM |
931 | int ntok, trunclen; |
932 | size_t opnamelen; | |
252b5132 RH |
933 | |
934 | /* split off the opcode */ | |
21b10511 | 935 | opnamelen = strspn (str, "abcdefghijklmnopqrstuvwxyz_/46819"); |
252b5132 RH |
936 | trunclen = (opnamelen < sizeof (opname) - 1 |
937 | ? opnamelen | |
938 | : sizeof (opname) - 1); | |
939 | memcpy (opname, str, trunclen); | |
940 | opname[trunclen] = '\0'; | |
941 | ||
942 | /* tokenize the rest of the line */ | |
943 | if ((ntok = tokenize_arguments (str + opnamelen, tok, MAX_INSN_ARGS)) < 0) | |
944 | { | |
43b4c25e MM |
945 | if (ntok != TOKENIZE_ERROR_REPORT) |
946 | as_bad (_("syntax error")); | |
947 | ||
252b5132 RH |
948 | return; |
949 | } | |
950 | ||
951 | /* finish it off */ | |
952 | assemble_tokens (opname, tok, ntok, alpha_macros_on); | |
953 | } | |
954 | ||
955 | /* Round up a section's size to the appropriate boundary. */ | |
956 | ||
957 | valueT | |
958 | md_section_align (seg, size) | |
959 | segT seg; | |
960 | valueT size; | |
961 | { | |
32ff5c2e KH |
962 | int align = bfd_get_section_alignment (stdoutput, seg); |
963 | valueT mask = ((valueT) 1 << align) - 1; | |
252b5132 RH |
964 | |
965 | return (size + mask) & ~mask; | |
966 | } | |
967 | ||
968 | /* Turn a string in input_line_pointer into a floating point constant | |
bc0d738a NC |
969 | of type TYPE, and store the appropriate bytes in *LITP. The number |
970 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
252b5132 RH |
971 | returned, or NULL on OK. */ |
972 | ||
973 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
974 | #define MAX_LITTLENUMS 6 | |
975 | ||
976 | extern char *vax_md_atof PARAMS ((int, char *, int *)); | |
977 | ||
978 | char * | |
979 | md_atof (type, litP, sizeP) | |
980 | char type; | |
981 | char *litP; | |
982 | int *sizeP; | |
983 | { | |
984 | int prec; | |
985 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
986 | LITTLENUM_TYPE *wordP; | |
987 | char *t; | |
988 | ||
989 | switch (type) | |
990 | { | |
991 | /* VAX floats */ | |
992 | case 'G': | |
993 | /* VAX md_atof doesn't like "G" for some reason. */ | |
994 | type = 'g'; | |
995 | case 'F': | |
996 | case 'D': | |
997 | return vax_md_atof (type, litP, sizeP); | |
998 | ||
999 | /* IEEE floats */ | |
1000 | case 'f': | |
1001 | prec = 2; | |
1002 | break; | |
1003 | ||
1004 | case 'd': | |
1005 | prec = 4; | |
1006 | break; | |
1007 | ||
1008 | case 'x': | |
1009 | case 'X': | |
1010 | prec = 6; | |
1011 | break; | |
1012 | ||
1013 | case 'p': | |
1014 | case 'P': | |
1015 | prec = 6; | |
1016 | break; | |
1017 | ||
1018 | default: | |
1019 | *sizeP = 0; | |
1020 | return _("Bad call to MD_ATOF()"); | |
1021 | } | |
1022 | t = atof_ieee (input_line_pointer, type, words); | |
1023 | if (t) | |
1024 | input_line_pointer = t; | |
1025 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1026 | ||
1027 | for (wordP = words + prec - 1; prec--;) | |
1028 | { | |
1029 | md_number_to_chars (litP, (long) (*wordP--), sizeof (LITTLENUM_TYPE)); | |
1030 | litP += sizeof (LITTLENUM_TYPE); | |
1031 | } | |
1032 | ||
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | /* Take care of the target-specific command-line options. */ | |
1037 | ||
1038 | int | |
1039 | md_parse_option (c, arg) | |
1040 | int c; | |
1041 | char *arg; | |
1042 | { | |
1043 | switch (c) | |
1044 | { | |
1045 | case 'F': | |
1046 | alpha_nofloats_on = 1; | |
1047 | break; | |
1048 | ||
1049 | case OPTION_32ADDR: | |
1050 | alpha_addr32_on = 1; | |
1051 | break; | |
1052 | ||
1053 | case 'g': | |
1054 | alpha_debug = 1; | |
1055 | break; | |
1056 | ||
1057 | case 'G': | |
32ff5c2e | 1058 | g_switch_value = atoi (arg); |
252b5132 RH |
1059 | break; |
1060 | ||
1061 | case 'm': | |
1062 | { | |
1063 | const struct cpu_type *p; | |
1064 | for (p = cpu_types; p->name; ++p) | |
32ff5c2e | 1065 | if (strcmp (arg, p->name) == 0) |
252b5132 RH |
1066 | { |
1067 | alpha_target_name = p->name, alpha_target = p->flags; | |
1068 | goto found; | |
1069 | } | |
32ff5c2e | 1070 | as_warn (_("Unknown CPU identifier `%s'"), arg); |
252b5132 RH |
1071 | found:; |
1072 | } | |
1073 | break; | |
1074 | ||
1075 | #ifdef OBJ_EVAX | |
1dab94dd | 1076 | case '+': /* For g++. Hash any name > 63 chars long. */ |
252b5132 RH |
1077 | alpha_flag_hash_long_names = 1; |
1078 | break; | |
1079 | ||
1080 | case 'H': /* Show new symbol after hash truncation */ | |
1081 | alpha_flag_show_after_trunc = 1; | |
1082 | break; | |
1083 | ||
1084 | case 'h': /* for gnu-c/vax compatibility. */ | |
1085 | break; | |
1086 | #endif | |
1087 | ||
1088 | case OPTION_RELAX: | |
1089 | alpha_flag_relax = 1; | |
1090 | break; | |
1091 | ||
1092 | #ifdef OBJ_ELF | |
1093 | case OPTION_MDEBUG: | |
1094 | alpha_flag_mdebug = 1; | |
1095 | break; | |
1096 | case OPTION_NO_MDEBUG: | |
1097 | alpha_flag_mdebug = 0; | |
1098 | break; | |
1099 | #endif | |
1100 | ||
1101 | default: | |
1102 | return 0; | |
1103 | } | |
1104 | ||
1105 | return 1; | |
1106 | } | |
1107 | ||
1108 | /* Print a description of the command-line options that we accept. */ | |
1109 | ||
1110 | void | |
1111 | md_show_usage (stream) | |
1112 | FILE *stream; | |
1113 | { | |
32ff5c2e | 1114 | fputs (_("\ |
252b5132 RH |
1115 | Alpha options:\n\ |
1116 | -32addr treat addresses as 32-bit values\n\ | |
1117 | -F lack floating point instructions support\n\ | |
1118 | -mev4 | -mev45 | -mev5 | -mev56 | -mpca56 | -mev6 | -mall\n\ | |
1119 | specify variant of Alpha architecture\n\ | |
1120 | -m21064 | -m21066 | -m21164 | -m21164a | -m21164pc | -m21264\n\ | |
1121 | these variants include PALcode opcodes\n"), | |
1122 | stream); | |
1123 | #ifdef OBJ_EVAX | |
1124 | fputs (_("\ | |
1125 | VMS options:\n\ | |
1126 | -+ hash encode (don't truncate) names longer than 64 characters\n\ | |
1127 | -H show new symbol after hash truncation\n"), | |
1128 | stream); | |
1129 | #endif | |
1130 | } | |
1131 | ||
1132 | /* Decide from what point a pc-relative relocation is relative to, | |
1133 | relative to the pc-relative fixup. Er, relatively speaking. */ | |
1134 | ||
1135 | long | |
1136 | md_pcrel_from (fixP) | |
1137 | fixS *fixP; | |
1138 | { | |
1139 | valueT addr = fixP->fx_where + fixP->fx_frag->fr_address; | |
1140 | switch (fixP->fx_r_type) | |
1141 | { | |
1142 | case BFD_RELOC_ALPHA_GPDISP: | |
1143 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1144 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1145 | return addr; | |
1146 | default: | |
1147 | return fixP->fx_size + addr; | |
1148 | } | |
1149 | } | |
1150 | ||
1151 | /* Attempt to simplify or even eliminate a fixup. The return value is | |
1152 | ignored; perhaps it was once meaningful, but now it is historical. | |
1153 | To indicate that a fixup has been eliminated, set fixP->fx_done. | |
1154 | ||
1155 | For ELF, here it is that we transform the GPDISP_HI16 reloc we used | |
1156 | internally into the GPDISP reloc used externally. We had to do | |
1157 | this so that we'd have the GPDISP_LO16 reloc as a tag to compute | |
1158 | the distance to the "lda" instruction for setting the addend to | |
1159 | GPDISP. */ | |
1160 | ||
1161 | int | |
1162 | md_apply_fix (fixP, valueP) | |
1163 | fixS *fixP; | |
1164 | valueT *valueP; | |
1165 | { | |
1166 | char * const fixpos = fixP->fx_frag->fr_literal + fixP->fx_where; | |
1167 | valueT value = *valueP; | |
1168 | unsigned image, size; | |
1169 | ||
1170 | switch (fixP->fx_r_type) | |
1171 | { | |
1172 | /* The GPDISP relocations are processed internally with a symbol | |
1173 | referring to the current function; we need to drop in a value | |
1174 | which, when added to the address of the start of the function, | |
1175 | gives the desired GP. */ | |
1176 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1177 | { | |
1178 | fixS *next = fixP->fx_next; | |
1179 | assert (next->fx_r_type == BFD_RELOC_ALPHA_GPDISP_LO16); | |
1180 | ||
1181 | fixP->fx_offset = (next->fx_frag->fr_address + next->fx_where | |
1182 | - fixP->fx_frag->fr_address - fixP->fx_where); | |
1183 | ||
1184 | value = (value - sign_extend_16 (value)) >> 16; | |
1185 | } | |
1186 | #ifdef OBJ_ELF | |
1187 | fixP->fx_r_type = BFD_RELOC_ALPHA_GPDISP; | |
1188 | #endif | |
1189 | goto do_reloc_gp; | |
1190 | ||
1191 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1192 | value = sign_extend_16 (value); | |
1193 | fixP->fx_offset = 0; | |
1194 | #ifdef OBJ_ELF | |
1195 | fixP->fx_done = 1; | |
1196 | #endif | |
1197 | ||
1198 | do_reloc_gp: | |
9de8d8f1 | 1199 | fixP->fx_addsy = section_symbol (now_seg); |
252b5132 RH |
1200 | md_number_to_chars (fixpos, value, 2); |
1201 | break; | |
1202 | ||
1203 | case BFD_RELOC_16: | |
1204 | if (fixP->fx_pcrel) | |
1205 | fixP->fx_r_type = BFD_RELOC_16_PCREL; | |
1206 | size = 2; | |
1207 | goto do_reloc_xx; | |
1208 | case BFD_RELOC_32: | |
1209 | if (fixP->fx_pcrel) | |
1210 | fixP->fx_r_type = BFD_RELOC_32_PCREL; | |
1211 | size = 4; | |
1212 | goto do_reloc_xx; | |
1213 | case BFD_RELOC_64: | |
1214 | if (fixP->fx_pcrel) | |
1215 | fixP->fx_r_type = BFD_RELOC_64_PCREL; | |
1216 | size = 8; | |
1217 | do_reloc_xx: | |
1218 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
1219 | { | |
1220 | md_number_to_chars (fixpos, value, size); | |
1221 | goto done; | |
1222 | } | |
1223 | return 1; | |
1224 | ||
1225 | #ifdef OBJ_ECOFF | |
1226 | case BFD_RELOC_GPREL32: | |
1227 | assert (fixP->fx_subsy == alpha_gp_symbol); | |
1228 | fixP->fx_subsy = 0; | |
1229 | /* FIXME: inherited this obliviousness of `value' -- why? */ | |
1230 | md_number_to_chars (fixpos, -alpha_gp_value, 4); | |
1231 | break; | |
1232 | #endif | |
1233 | #ifdef OBJ_ELF | |
1234 | case BFD_RELOC_GPREL32: | |
1235 | return 1; | |
1236 | #endif | |
1237 | ||
1238 | case BFD_RELOC_23_PCREL_S2: | |
1239 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
1240 | { | |
32ff5c2e | 1241 | image = bfd_getl32 (fixpos); |
252b5132 RH |
1242 | image = (image & ~0x1FFFFF) | ((value >> 2) & 0x1FFFFF); |
1243 | goto write_done; | |
1244 | } | |
1245 | return 1; | |
1246 | ||
1247 | case BFD_RELOC_ALPHA_HINT: | |
1248 | if (fixP->fx_pcrel == 0 && fixP->fx_addsy == 0) | |
1249 | { | |
32ff5c2e | 1250 | image = bfd_getl32 (fixpos); |
252b5132 RH |
1251 | image = (image & ~0x3FFF) | ((value >> 2) & 0x3FFF); |
1252 | goto write_done; | |
1253 | } | |
1254 | return 1; | |
1255 | ||
1256 | #ifdef OBJ_ECOFF | |
1257 | case BFD_RELOC_ALPHA_LITERAL: | |
1258 | md_number_to_chars (fixpos, value, 2); | |
1259 | return 1; | |
1260 | ||
1261 | case BFD_RELOC_ALPHA_LITUSE: | |
1262 | return 1; | |
1263 | #endif | |
1264 | #ifdef OBJ_ELF | |
1265 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1266 | case BFD_RELOC_ALPHA_LITUSE: | |
1267 | return 1; | |
1268 | #endif | |
1269 | #ifdef OBJ_EVAX | |
1270 | case BFD_RELOC_ALPHA_LINKAGE: | |
1271 | case BFD_RELOC_ALPHA_CODEADDR: | |
1272 | return 1; | |
1273 | #endif | |
1274 | ||
43b4c25e MM |
1275 | #ifdef RELOC_OP_P |
1276 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
1277 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
1278 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
1279 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
1280 | return 1; | |
1281 | ||
1282 | case BFD_RELOC_ALPHA_USER_GPDISP: | |
1283 | case BFD_RELOC_ALPHA_USER_GPRELHIGH: | |
1284 | case BFD_RELOC_ALPHA_USER_GPRELLOW: | |
1285 | abort (); | |
1286 | #endif | |
1287 | ||
b96ed59a PB |
1288 | case BFD_RELOC_VTABLE_INHERIT: |
1289 | case BFD_RELOC_VTABLE_ENTRY: | |
1290 | return 1; | |
1291 | ||
252b5132 RH |
1292 | default: |
1293 | { | |
1294 | const struct alpha_operand *operand; | |
1295 | ||
32ff5c2e | 1296 | if ((int) fixP->fx_r_type >= 0) |
252b5132 RH |
1297 | as_fatal (_("unhandled relocation type %s"), |
1298 | bfd_get_reloc_code_name (fixP->fx_r_type)); | |
1299 | ||
32ff5c2e KH |
1300 | assert (-(int) fixP->fx_r_type < (int) alpha_num_operands); |
1301 | operand = &alpha_operands[-(int) fixP->fx_r_type]; | |
252b5132 RH |
1302 | |
1303 | /* The rest of these fixups only exist internally during symbol | |
1304 | resolution and have no representation in the object file. | |
1305 | Therefore they must be completely resolved as constants. */ | |
1306 | ||
1307 | if (fixP->fx_addsy != 0 | |
49309057 | 1308 | && S_GET_SEGMENT (fixP->fx_addsy) != absolute_section) |
252b5132 RH |
1309 | as_bad_where (fixP->fx_file, fixP->fx_line, |
1310 | _("non-absolute expression in constant field")); | |
1311 | ||
32ff5c2e KH |
1312 | image = bfd_getl32 (fixpos); |
1313 | image = insert_operand (image, operand, (offsetT) value, | |
1314 | fixP->fx_file, fixP->fx_line); | |
252b5132 RH |
1315 | } |
1316 | goto write_done; | |
1317 | } | |
1318 | ||
1319 | if (fixP->fx_addsy != 0 || fixP->fx_pcrel != 0) | |
1320 | return 1; | |
1321 | else | |
1322 | { | |
32ff5c2e | 1323 | as_warn_where (fixP->fx_file, fixP->fx_line, |
66498417 | 1324 | _("type %d reloc done?\n"), (int) fixP->fx_r_type); |
252b5132 RH |
1325 | goto done; |
1326 | } | |
1327 | ||
1328 | write_done: | |
32ff5c2e | 1329 | md_number_to_chars (fixpos, image, 4); |
252b5132 RH |
1330 | |
1331 | done: | |
1332 | fixP->fx_done = 1; | |
1333 | return 0; | |
1334 | } | |
1335 | ||
1336 | /* | |
1337 | * Look for a register name in the given symbol. | |
1338 | */ | |
1339 | ||
1340 | symbolS * | |
32ff5c2e | 1341 | md_undefined_symbol (name) |
252b5132 RH |
1342 | char *name; |
1343 | { | |
1344 | if (*name == '$') | |
1345 | { | |
1346 | int is_float = 0, num; | |
1347 | ||
1348 | switch (*++name) | |
1349 | { | |
1350 | case 'f': | |
1351 | if (name[1] == 'p' && name[2] == '\0') | |
1352 | return alpha_register_table[AXP_REG_FP]; | |
1353 | is_float = 32; | |
1354 | /* FALLTHRU */ | |
1355 | ||
1356 | case 'r': | |
32ff5c2e | 1357 | if (!isdigit (*++name)) |
252b5132 RH |
1358 | break; |
1359 | /* FALLTHRU */ | |
1360 | ||
1361 | case '0': case '1': case '2': case '3': case '4': | |
1362 | case '5': case '6': case '7': case '8': case '9': | |
1363 | if (name[1] == '\0') | |
1364 | num = name[0] - '0'; | |
32ff5c2e | 1365 | else if (name[0] != '0' && isdigit (name[1]) && name[2] == '\0') |
252b5132 RH |
1366 | { |
1367 | num = (name[0] - '0') * 10 + name[1] - '0'; | |
1368 | if (num >= 32) | |
1369 | break; | |
1370 | } | |
1371 | else | |
1372 | break; | |
1373 | ||
6480b79a | 1374 | if (!alpha_noat_on && (num + is_float) == AXP_REG_AT) |
32ff5c2e | 1375 | as_warn (_("Used $at without \".set noat\"")); |
252b5132 RH |
1376 | return alpha_register_table[num + is_float]; |
1377 | ||
1378 | case 'a': | |
1379 | if (name[1] == 't' && name[2] == '\0') | |
1380 | { | |
1381 | if (!alpha_noat_on) | |
32ff5c2e | 1382 | as_warn (_("Used $at without \".set noat\"")); |
252b5132 RH |
1383 | return alpha_register_table[AXP_REG_AT]; |
1384 | } | |
1385 | break; | |
1386 | ||
1387 | case 'g': | |
1388 | if (name[1] == 'p' && name[2] == '\0') | |
1389 | return alpha_register_table[alpha_gp_register]; | |
1390 | break; | |
1391 | ||
1392 | case 's': | |
1393 | if (name[1] == 'p' && name[2] == '\0') | |
1394 | return alpha_register_table[AXP_REG_SP]; | |
1395 | break; | |
1396 | } | |
1397 | } | |
1398 | return NULL; | |
1399 | } | |
1400 | ||
1401 | #ifdef OBJ_ECOFF | |
1402 | /* @@@ Magic ECOFF bits. */ | |
1403 | ||
1404 | void | |
1405 | alpha_frob_ecoff_data () | |
1406 | { | |
1407 | select_gp_value (); | |
1408 | /* $zero and $f31 are read-only */ | |
1409 | alpha_gprmask &= ~1; | |
1410 | alpha_fprmask &= ~1; | |
1411 | } | |
1412 | #endif | |
1413 | ||
1414 | /* Hook to remember a recently defined label so that the auto-align | |
1415 | code can adjust the symbol after we know what alignment will be | |
1416 | required. */ | |
1417 | ||
1418 | void | |
1419 | alpha_define_label (sym) | |
1420 | symbolS *sym; | |
1421 | { | |
1422 | alpha_insn_label = sym; | |
1423 | } | |
1424 | ||
1425 | /* Return true if we must always emit a reloc for a type and false if | |
1426 | there is some hope of resolving it a assembly time. */ | |
1427 | ||
1428 | int | |
1429 | alpha_force_relocation (f) | |
1430 | fixS *f; | |
1431 | { | |
1432 | if (alpha_flag_relax) | |
1433 | return 1; | |
1434 | ||
1435 | switch (f->fx_r_type) | |
1436 | { | |
1437 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1438 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1439 | case BFD_RELOC_ALPHA_GPDISP: | |
1440 | #ifdef OBJ_ECOFF | |
1441 | case BFD_RELOC_ALPHA_LITERAL: | |
1442 | #endif | |
1443 | #ifdef OBJ_ELF | |
1444 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1445 | #endif | |
1446 | case BFD_RELOC_ALPHA_LITUSE: | |
1447 | case BFD_RELOC_GPREL32: | |
1448 | #ifdef OBJ_EVAX | |
1449 | case BFD_RELOC_ALPHA_LINKAGE: | |
1450 | case BFD_RELOC_ALPHA_CODEADDR: | |
43b4c25e MM |
1451 | #endif |
1452 | #ifdef RELOC_OP_P | |
1453 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
1454 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
1455 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
1456 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
1457 | case BFD_RELOC_ALPHA_USER_GPDISP: | |
1458 | case BFD_RELOC_ALPHA_USER_GPRELHIGH: | |
1459 | case BFD_RELOC_ALPHA_USER_GPRELLOW: | |
252b5132 | 1460 | #endif |
b96ed59a PB |
1461 | case BFD_RELOC_VTABLE_INHERIT: |
1462 | case BFD_RELOC_VTABLE_ENTRY: | |
252b5132 RH |
1463 | return 1; |
1464 | ||
1465 | case BFD_RELOC_23_PCREL_S2: | |
1466 | case BFD_RELOC_32: | |
1467 | case BFD_RELOC_64: | |
1468 | case BFD_RELOC_ALPHA_HINT: | |
1469 | return 0; | |
1470 | ||
1471 | default: | |
66498417 KH |
1472 | assert ((int) f->fx_r_type < 0 |
1473 | && -(int) f->fx_r_type < (int) alpha_num_operands); | |
252b5132 RH |
1474 | return 0; |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* Return true if we can partially resolve a relocation now. */ | |
1479 | ||
1480 | int | |
1481 | alpha_fix_adjustable (f) | |
1482 | fixS *f; | |
1483 | { | |
1484 | #ifdef OBJ_ELF | |
1485 | /* Prevent all adjustments to global symbols */ | |
1486 | if (S_IS_EXTERN (f->fx_addsy) || S_IS_WEAK (f->fx_addsy)) | |
1487 | return 0; | |
1488 | #endif | |
1489 | ||
1490 | /* Are there any relocation types for which we must generate a reloc | |
1491 | but we can adjust the values contained within it? */ | |
1492 | switch (f->fx_r_type) | |
1493 | { | |
1494 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
1495 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
1496 | case BFD_RELOC_ALPHA_GPDISP: | |
1497 | return 0; | |
1498 | ||
1499 | #ifdef OBJ_ECOFF | |
1500 | case BFD_RELOC_ALPHA_LITERAL: | |
1501 | #endif | |
1502 | #ifdef OBJ_ELF | |
1503 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
1504 | #endif | |
43b4c25e MM |
1505 | #ifdef RELOC_OP_P |
1506 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
1507 | #endif | |
252b5132 RH |
1508 | #ifdef OBJ_EVAX |
1509 | case BFD_RELOC_ALPHA_LINKAGE: | |
1510 | case BFD_RELOC_ALPHA_CODEADDR: | |
1511 | #endif | |
1512 | return 1; | |
1513 | ||
1514 | case BFD_RELOC_ALPHA_LITUSE: | |
43b4c25e MM |
1515 | #ifdef RELOC_OP_P |
1516 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
1517 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
1518 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
1519 | case BFD_RELOC_ALPHA_USER_GPDISP: | |
1520 | case BFD_RELOC_ALPHA_USER_GPRELHIGH: | |
1521 | case BFD_RELOC_ALPHA_USER_GPRELLOW: | |
1522 | #endif | |
b96ed59a PB |
1523 | case BFD_RELOC_VTABLE_ENTRY: |
1524 | case BFD_RELOC_VTABLE_INHERIT: | |
252b5132 RH |
1525 | return 0; |
1526 | ||
1527 | case BFD_RELOC_GPREL32: | |
1528 | case BFD_RELOC_23_PCREL_S2: | |
1529 | case BFD_RELOC_32: | |
1530 | case BFD_RELOC_64: | |
1531 | case BFD_RELOC_ALPHA_HINT: | |
1532 | return 1; | |
1533 | ||
1534 | default: | |
32ff5c2e KH |
1535 | assert ((int) f->fx_r_type < 0 |
1536 | && - (int) f->fx_r_type < (int) alpha_num_operands); | |
252b5132 RH |
1537 | return 1; |
1538 | } | |
1539 | /*NOTREACHED*/ | |
1540 | } | |
1541 | ||
1542 | /* Generate the BFD reloc to be stuck in the object file from the | |
1543 | fixup used internally in the assembler. */ | |
1544 | ||
1545 | arelent * | |
1546 | tc_gen_reloc (sec, fixp) | |
446a06c9 | 1547 | asection *sec ATTRIBUTE_UNUSED; |
252b5132 RH |
1548 | fixS *fixp; |
1549 | { | |
1550 | arelent *reloc; | |
1551 | ||
1552 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
49309057 ILT |
1553 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
1554 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
1555 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; |
1556 | ||
1557 | /* Make sure none of our internal relocations make it this far. | |
1558 | They'd better have been fully resolved by this point. */ | |
32ff5c2e | 1559 | assert ((int) fixp->fx_r_type > 0); |
252b5132 RH |
1560 | |
1561 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
1562 | if (reloc->howto == NULL) | |
1563 | { | |
1564 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1565 | _("cannot represent `%s' relocation in object file"), | |
1566 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
1567 | return NULL; | |
1568 | } | |
1569 | ||
1570 | if (!fixp->fx_pcrel != !reloc->howto->pc_relative) | |
1571 | { | |
1572 | as_fatal (_("internal error? cannot generate `%s' relocation"), | |
1573 | bfd_get_reloc_code_name (fixp->fx_r_type)); | |
1574 | } | |
1575 | assert (!fixp->fx_pcrel == !reloc->howto->pc_relative); | |
1576 | ||
1577 | #ifdef OBJ_ECOFF | |
1578 | if (fixp->fx_r_type == BFD_RELOC_ALPHA_LITERAL) | |
1579 | { | |
1580 | /* fake out bfd_perform_relocation. sigh */ | |
1581 | reloc->addend = -alpha_gp_value; | |
1582 | } | |
1583 | else | |
1584 | #endif | |
1585 | { | |
1586 | reloc->addend = fixp->fx_offset; | |
1587 | #ifdef OBJ_ELF | |
1588 | /* | |
1589 | * Ohhh, this is ugly. The problem is that if this is a local global | |
1590 | * symbol, the relocation will entirely be performed at link time, not | |
1591 | * at assembly time. bfd_perform_reloc doesn't know about this sort | |
1592 | * of thing, and as a result we need to fake it out here. | |
1593 | */ | |
6f112c47 JJ |
1594 | if ((S_IS_EXTERN (fixp->fx_addsy) || S_IS_WEAK (fixp->fx_addsy) |
1595 | || (S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_MERGE)) | |
32ff5c2e | 1596 | && !S_IS_COMMON (fixp->fx_addsy)) |
49309057 | 1597 | reloc->addend -= symbol_get_bfdsym (fixp->fx_addsy)->value; |
252b5132 RH |
1598 | #endif |
1599 | } | |
1600 | ||
1601 | return reloc; | |
1602 | } | |
1603 | ||
1604 | /* Parse a register name off of the input_line and return a register | |
1605 | number. Gets md_undefined_symbol above to do the register name | |
1606 | matching for us. | |
1607 | ||
1608 | Only called as a part of processing the ECOFF .frame directive. */ | |
1609 | ||
1610 | int | |
1611 | tc_get_register (frame) | |
446a06c9 | 1612 | int frame ATTRIBUTE_UNUSED; |
252b5132 RH |
1613 | { |
1614 | int framereg = AXP_REG_SP; | |
1615 | ||
1616 | SKIP_WHITESPACE (); | |
1617 | if (*input_line_pointer == '$') | |
1618 | { | |
1619 | char *s = input_line_pointer; | |
1620 | char c = get_symbol_end (); | |
1621 | symbolS *sym = md_undefined_symbol (s); | |
1622 | ||
32ff5c2e | 1623 | *strchr (s, '\0') = c; |
252b5132 RH |
1624 | if (sym && (framereg = S_GET_VALUE (sym)) <= 31) |
1625 | goto found; | |
1626 | } | |
1627 | as_warn (_("frame reg expected, using $%d."), framereg); | |
1628 | ||
1629 | found: | |
1630 | note_gpreg (framereg); | |
1631 | return framereg; | |
1632 | } | |
1633 | ||
1634 | /* This is called before the symbol table is processed. In order to | |
1635 | work with gcc when using mips-tfile, we must keep all local labels. | |
1636 | However, in other cases, we want to discard them. If we were | |
1637 | called with -g, but we didn't see any debugging information, it may | |
1638 | mean that gcc is smuggling debugging information through to | |
1639 | mips-tfile, in which case we must generate all local labels. */ | |
1640 | ||
1641 | #ifdef OBJ_ECOFF | |
1642 | ||
1643 | void | |
1644 | alpha_frob_file_before_adjust () | |
1645 | { | |
1646 | if (alpha_debug != 0 | |
1647 | && ! ecoff_debugging_seen) | |
1648 | flag_keep_locals = 1; | |
1649 | } | |
1650 | ||
1651 | #endif /* OBJ_ECOFF */ | |
1652 | \f | |
43b4c25e MM |
1653 | #ifdef RELOC_OP_P |
1654 | ||
66498417 KH |
1655 | /* Before the relocations are written, reorder them, so that user |
1656 | supplied !lituse relocations follow the appropriate !literal | |
1657 | relocations. Also convert the gas-internal relocations to the | |
1658 | appropriate linker relocations. */ | |
43b4c25e MM |
1659 | |
1660 | void | |
1661 | alpha_adjust_symtab () | |
1662 | { | |
1663 | if (alpha_literal_hash) | |
1664 | { | |
1665 | #ifdef DEBUG2_ALPHA | |
1666 | fprintf (stderr, "alpha_adjust_symtab called\n"); | |
1667 | #endif | |
1668 | ||
66498417 KH |
1669 | /* Go over each section, reordering the relocations so that all |
1670 | of the explicit LITUSE's are adjacent to the explicit | |
1671 | LITERAL's. */ | |
1672 | bfd_map_over_sections (stdoutput, alpha_adjust_symtab_relocs, | |
1673 | (char *) 0); | |
43b4c25e MM |
1674 | } |
1675 | } | |
43b4c25e MM |
1676 | \f |
1677 | /* Inner function to move LITUSE's next to the LITERAL. */ | |
1678 | ||
1679 | static void | |
1680 | alpha_adjust_symtab_relocs (abfd, sec, ptr) | |
4dc7ead9 | 1681 | bfd *abfd ATTRIBUTE_UNUSED; |
43b4c25e | 1682 | asection *sec; |
4dc7ead9 | 1683 | PTR ptr ATTRIBUTE_UNUSED; |
43b4c25e MM |
1684 | { |
1685 | segment_info_type *seginfo = seg_info (sec); | |
1686 | fixS **prevP; | |
1687 | fixS *fixp; | |
1688 | fixS *next; | |
1689 | fixS *lituse; | |
1690 | int n_lituses = 0; | |
1691 | ||
1692 | #ifdef DEBUG2_ALPHA | |
1693 | int n = 0; | |
1694 | int n_literals = 0; | |
1695 | int n_dup_literals = 0; | |
1696 | #endif | |
1697 | ||
66498417 KH |
1698 | /* If seginfo is NULL, we did not create this section; don't do |
1699 | anything with it. By using a pointer to a pointer, we can update | |
1700 | the links in place. */ | |
43b4c25e MM |
1701 | if (seginfo == NULL) |
1702 | return; | |
1703 | ||
1704 | /* If there are no relocations, skip the section. */ | |
1705 | if (! seginfo->fix_root) | |
1706 | return; | |
1707 | ||
1708 | /* First rebuild the fixup chain without the expicit lituse's. */ | |
1709 | prevP = &(seginfo->fix_root); | |
1710 | for (fixp = seginfo->fix_root; fixp; fixp = next) | |
1711 | { | |
1712 | next = fixp->fx_next; | |
32ff5c2e | 1713 | fixp->fx_next = (fixS *) 0; |
43b4c25e MM |
1714 | #ifdef DEBUG2_ALPHA |
1715 | n++; | |
1716 | #endif | |
1717 | ||
1718 | switch (fixp->fx_r_type) | |
1719 | { | |
1720 | default: | |
1721 | *prevP = fixp; | |
1722 | prevP = &(fixp->fx_next); | |
1723 | #ifdef DEBUG2_ALPHA | |
1724 | fprintf (stderr, | |
1725 | "alpha_adjust_symtab_relocs: 0x%lx, other relocation %s\n", | |
32ff5c2e | 1726 | (long) fixp, |
43b4c25e MM |
1727 | bfd_get_reloc_code_name (fixp->fx_r_type)); |
1728 | #endif | |
1729 | break; | |
1730 | ||
1731 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
1732 | *prevP = fixp; | |
1733 | prevP = &(fixp->fx_next); | |
1734 | /* prevent assembler from trying to adjust the offset */ | |
1735 | #ifdef DEBUG2_ALPHA | |
1736 | n_literals++; | |
1737 | if (fixp->tc_fix_data.info->n_literals != 1) | |
1738 | n_dup_literals++; | |
1739 | fprintf (stderr, | |
1740 | "alpha_adjust_symtab_relocs: 0x%lx, !literal!%.6d, # literals = %2d\n", | |
32ff5c2e | 1741 | (long) fixp, |
43b4c25e MM |
1742 | fixp->tc_fix_data.info->sequence, |
1743 | fixp->tc_fix_data.info->n_literals); | |
1744 | #endif | |
1745 | break; | |
1746 | ||
1747 | /* do not link in lituse's */ | |
1748 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
1749 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
1750 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
1751 | n_lituses++; | |
1752 | if (fixp->tc_fix_data.info->n_literals == 0) | |
1753 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1754 | _("No !literal!%d was found"), | |
1755 | fixp->tc_fix_data.info->sequence); | |
1756 | #ifdef DEBUG2_ALPHA | |
1757 | fprintf (stderr, | |
1758 | "alpha_adjust_symtab_relocs: 0x%lx, !lituse !%.6d, # lituses = %2d, next_lituse = 0x%lx\n", | |
32ff5c2e | 1759 | (long) fixp, |
43b4c25e MM |
1760 | fixp->tc_fix_data.info->sequence, |
1761 | fixp->tc_fix_data.info->n_lituses, | |
32ff5c2e | 1762 | (long) fixp->tc_fix_data.next_lituse); |
43b4c25e MM |
1763 | #endif |
1764 | break; | |
1765 | } | |
1766 | } | |
1767 | ||
1768 | /* If there were any lituses, go and add them to the chain, unless there is | |
1769 | more than one !literal for a given sequence number. They are linked | |
1770 | through the next_lituse field in reverse order, so as we go through the | |
1771 | next_lituse chain, we effectively reverse the chain once again. If there | |
1772 | was more than one !literal, we fall back to loading up the address w/o | |
1773 | optimization. Also, if the !literals/!lituses are spread in different | |
1774 | segments (happens in the Linux kernel semaphores), suppress the | |
1775 | optimization. */ | |
1776 | if (n_lituses) | |
1777 | { | |
1778 | for (fixp = seginfo->fix_root; fixp; fixp = fixp->fx_next) | |
1779 | { | |
1780 | switch (fixp->fx_r_type) | |
1781 | { | |
1782 | default: | |
1783 | break; | |
1784 | ||
1785 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
1786 | #ifdef OBJ_ELF | |
1787 | fixp->fx_r_type = BFD_RELOC_ALPHA_ELF_LITERAL; | |
1788 | #else | |
1789 | fixp->fx_r_type = BFD_RELOC_ALPHA_LITERAL; /* XXX check this */ | |
1790 | #endif | |
1791 | if (fixp->tc_fix_data.info->n_literals == 1 | |
1792 | && ! fixp->tc_fix_data.info->multi_section_p) | |
1793 | { | |
1794 | for (lituse = fixp->tc_fix_data.info->lituse; | |
32ff5c2e | 1795 | lituse != (fixS *) 0; |
43b4c25e MM |
1796 | lituse = lituse->tc_fix_data.next_lituse) |
1797 | { | |
1798 | lituse->fx_next = fixp->fx_next; | |
1799 | fixp->fx_next = lituse; | |
1800 | } | |
1801 | } | |
1802 | break; | |
1803 | ||
1804 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
1805 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
1806 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
1807 | fixp->fx_r_type = BFD_RELOC_ALPHA_LITUSE; | |
1808 | break; | |
1809 | } | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | #ifdef DEBUG2_ALPHA | |
1814 | fprintf (stderr, "alpha_adjust_symtab_relocs: %s, %d literal%s, %d duplicate literal%s, %d lituse%s\n\n", | |
1815 | sec->name, | |
1816 | n_literals, (n_literals == 1) ? "" : "s", | |
1817 | n_dup_literals, (n_dup_literals == 1) ? "" : "s", | |
1818 | n_lituses, (n_lituses == 1) ? "" : "s"); | |
1819 | #endif | |
1820 | } | |
1821 | ||
1822 | #endif /* RELOC_OP_P */ | |
43b4c25e MM |
1823 | \f |
1824 | #ifdef DEBUG_ALPHA | |
1825 | static void | |
1826 | debug_exp (tok, ntok) | |
1827 | expressionS tok[]; | |
1828 | int ntok; | |
1829 | { | |
1830 | int i; | |
1831 | ||
1832 | fprintf (stderr, "debug_exp: %d tokens", ntok); | |
1833 | for (i = 0; i < ntok; i++) | |
1834 | { | |
1835 | expressionS *t = &tok[i]; | |
1836 | const char *name; | |
1837 | switch (t->X_op) | |
1838 | { | |
1839 | default: name = "unknown"; break; | |
1840 | case O_illegal: name = "O_illegal"; break; | |
1841 | case O_absent: name = "O_absent"; break; | |
1842 | case O_constant: name = "O_constant"; break; | |
1843 | case O_symbol: name = "O_symbol"; break; | |
1844 | case O_symbol_rva: name = "O_symbol_rva"; break; | |
1845 | case O_register: name = "O_register"; break; | |
1846 | case O_big: name = "O_big"; break; | |
1847 | case O_uminus: name = "O_uminus"; break; | |
1848 | case O_bit_not: name = "O_bit_not"; break; | |
1849 | case O_logical_not: name = "O_logical_not"; break; | |
1850 | case O_multiply: name = "O_multiply"; break; | |
1851 | case O_divide: name = "O_divide"; break; | |
1852 | case O_modulus: name = "O_modulus"; break; | |
1853 | case O_left_shift: name = "O_left_shift"; break; | |
1854 | case O_right_shift: name = "O_right_shift"; break; | |
1855 | case O_bit_inclusive_or: name = "O_bit_inclusive_or"; break; | |
1856 | case O_bit_or_not: name = "O_bit_or_not"; break; | |
1857 | case O_bit_exclusive_or: name = "O_bit_exclusive_or"; break; | |
1858 | case O_bit_and: name = "O_bit_and"; break; | |
1859 | case O_add: name = "O_add"; break; | |
1860 | case O_subtract: name = "O_subtract"; break; | |
1861 | case O_eq: name = "O_eq"; break; | |
1862 | case O_ne: name = "O_ne"; break; | |
1863 | case O_lt: name = "O_lt"; break; | |
1864 | case O_le: name = "O_le"; break; | |
1865 | case O_ge: name = "O_ge"; break; | |
1866 | case O_gt: name = "O_gt"; break; | |
1867 | case O_logical_and: name = "O_logical_and"; break; | |
1868 | case O_logical_or: name = "O_logical_or"; break; | |
1869 | case O_index: name = "O_index"; break; | |
1870 | case O_pregister: name = "O_pregister"; break; | |
1871 | case O_cpregister: name = "O_cpregister"; break; | |
1872 | case O_literal: name = "O_literal"; break; | |
1873 | case O_lituse_base: name = "O_lituse_base"; break; | |
1874 | case O_lituse_bytoff: name = "O_lituse_bytoff"; break; | |
1875 | case O_lituse_jsr: name = "O_lituse_jsr"; break; | |
1876 | case O_gpdisp: name = "O_gpdisp"; break; | |
1877 | case O_gprelhigh: name = "O_gprelhigh"; break; | |
1878 | case O_gprellow: name = "O_gprellow"; break; | |
1879 | case O_md10: name = "O_md10"; break; | |
1880 | case O_md11: name = "O_md11"; break; | |
1881 | case O_md12: name = "O_md12"; break; | |
1882 | case O_md13: name = "O_md13"; break; | |
1883 | case O_md14: name = "O_md14"; break; | |
1884 | case O_md15: name = "O_md15"; break; | |
1885 | case O_md16: name = "O_md16"; break; | |
1886 | } | |
1887 | ||
1888 | fprintf (stderr, ", %s(%s, %s, %d)", name, | |
1889 | (t->X_add_symbol) ? S_GET_NAME (t->X_add_symbol) : "--", | |
1890 | (t->X_op_symbol) ? S_GET_NAME (t->X_op_symbol) : "--", | |
32ff5c2e | 1891 | (int) t->X_add_number); |
43b4c25e MM |
1892 | } |
1893 | fprintf (stderr, "\n"); | |
1894 | fflush (stderr); | |
1895 | } | |
1896 | #endif | |
1897 | ||
252b5132 RH |
1898 | /* Parse the arguments to an opcode. */ |
1899 | ||
1900 | static int | |
1901 | tokenize_arguments (str, tok, ntok) | |
1902 | char *str; | |
1903 | expressionS tok[]; | |
1904 | int ntok; | |
1905 | { | |
1906 | expressionS *end_tok = tok + ntok; | |
1907 | char *old_input_line_pointer; | |
1908 | int saw_comma = 0, saw_arg = 0; | |
43b4c25e MM |
1909 | #ifdef DEBUG_ALPHA |
1910 | expressionS *orig_tok = tok; | |
1911 | #endif | |
1912 | #ifdef RELOC_OP_P | |
1913 | char *p; | |
1914 | const struct alpha_reloc_op_tag *r; | |
1915 | int c, i; | |
1916 | size_t len; | |
1917 | int reloc_found_p = 0; | |
1918 | #endif | |
252b5132 RH |
1919 | |
1920 | memset (tok, 0, sizeof (*tok) * ntok); | |
1921 | ||
1922 | /* Save and restore input_line_pointer around this function */ | |
1923 | old_input_line_pointer = input_line_pointer; | |
1924 | input_line_pointer = str; | |
1925 | ||
1926 | while (tok < end_tok && *input_line_pointer) | |
1927 | { | |
1928 | SKIP_WHITESPACE (); | |
1929 | switch (*input_line_pointer) | |
1930 | { | |
1931 | case '\0': | |
1932 | goto fini; | |
1933 | ||
43b4c25e MM |
1934 | #ifdef RELOC_OP_P |
1935 | case '!': | |
1936 | /* A relocation operand can be placed after the normal operand on an | |
1937 | assembly language statement, and has the following form: | |
1938 | !relocation_type!sequence_number. */ | |
1939 | if (reloc_found_p) | |
1940 | { /* only support one relocation op per insn */ | |
1941 | as_bad (_("More than one relocation op per insn")); | |
1942 | goto err_report; | |
1943 | } | |
1944 | ||
1945 | if (!saw_arg) | |
1946 | goto err; | |
1947 | ||
1948 | for (p = ++input_line_pointer; | |
1949 | ((c = *p) != '!' && c != ';' && c != '#' && c != ',' | |
1950 | && !is_end_of_line[c]); | |
1951 | p++) | |
1952 | ; | |
1953 | ||
1954 | /* Parse !relocation_type */ | |
1955 | len = p - input_line_pointer; | |
1956 | if (len == 0) | |
1957 | { | |
1958 | as_bad (_("No relocation operand")); | |
1959 | goto err_report; | |
1960 | } | |
1961 | ||
1962 | if (c != '!') | |
1963 | { | |
1964 | as_bad (_("No !sequence-number after !%s"), input_line_pointer); | |
1965 | goto err_report; | |
1966 | } | |
1967 | ||
1968 | r = &alpha_reloc_op[0]; | |
66498417 | 1969 | for (i = alpha_num_reloc_op - 1; i >= 0; i--, r++) |
43b4c25e MM |
1970 | { |
1971 | if (len == r->length | |
1972 | && memcmp (input_line_pointer, r->name, len) == 0) | |
1973 | break; | |
1974 | } | |
1975 | if (i < 0) | |
1976 | { | |
66498417 KH |
1977 | as_bad (_("Unknown relocation operand: !%s"), |
1978 | input_line_pointer); | |
43b4c25e MM |
1979 | goto err_report; |
1980 | } | |
1981 | ||
1982 | input_line_pointer = ++p; | |
1983 | ||
1984 | /* Parse !sequence_number */ | |
1985 | memset (tok, '\0', sizeof (expressionS)); | |
1986 | expression (tok); | |
1987 | ||
1988 | if (tok->X_op != O_constant | |
1989 | || ! ALPHA_RELOC_SEQUENCE_OK (tok->X_add_number)) | |
1990 | { | |
66498417 KH |
1991 | as_bad (_("Bad sequence number: !%s!%s"), |
1992 | r->name, input_line_pointer); | |
43b4c25e MM |
1993 | goto err_report; |
1994 | } | |
1995 | ||
1996 | tok->X_op = r->op; | |
1997 | reloc_found_p = 1; | |
1998 | ++tok; | |
1999 | break; | |
2000 | #endif | |
2001 | ||
252b5132 RH |
2002 | case ',': |
2003 | ++input_line_pointer; | |
2004 | if (saw_comma || !saw_arg) | |
2005 | goto err; | |
2006 | saw_comma = 1; | |
2007 | break; | |
2008 | ||
2009 | case '(': | |
2010 | { | |
2011 | char *hold = input_line_pointer++; | |
2012 | ||
1dab94dd | 2013 | /* First try for parenthesized register ... */ |
252b5132 RH |
2014 | expression (tok); |
2015 | if (*input_line_pointer == ')' && tok->X_op == O_register) | |
2016 | { | |
2017 | tok->X_op = (saw_comma ? O_cpregister : O_pregister); | |
2018 | saw_comma = 0; | |
2019 | saw_arg = 1; | |
2020 | ++input_line_pointer; | |
2021 | ++tok; | |
2022 | break; | |
2023 | } | |
2024 | ||
2025 | /* ... then fall through to plain expression */ | |
2026 | input_line_pointer = hold; | |
2027 | } | |
2028 | ||
2029 | default: | |
2030 | if (saw_arg && !saw_comma) | |
2031 | goto err; | |
43b4c25e | 2032 | |
252b5132 RH |
2033 | expression (tok); |
2034 | if (tok->X_op == O_illegal || tok->X_op == O_absent) | |
2035 | goto err; | |
2036 | ||
2037 | saw_comma = 0; | |
2038 | saw_arg = 1; | |
2039 | ++tok; | |
2040 | break; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | fini: | |
2045 | if (saw_comma) | |
2046 | goto err; | |
2047 | input_line_pointer = old_input_line_pointer; | |
43b4c25e MM |
2048 | |
2049 | #ifdef DEBUG_ALPHA | |
2050 | debug_exp (orig_tok, ntok - (end_tok - tok)); | |
2051 | #endif | |
2052 | ||
252b5132 RH |
2053 | return ntok - (end_tok - tok); |
2054 | ||
2055 | err: | |
2056 | input_line_pointer = old_input_line_pointer; | |
43b4c25e MM |
2057 | return TOKENIZE_ERROR; |
2058 | ||
2059 | #ifdef RELOC_OP_P | |
2060 | err_report: | |
2061 | input_line_pointer = old_input_line_pointer; | |
2062 | return TOKENIZE_ERROR_REPORT; | |
2063 | #endif | |
252b5132 RH |
2064 | } |
2065 | ||
2066 | /* Search forward through all variants of an opcode looking for a | |
2067 | syntax match. */ | |
2068 | ||
2069 | static const struct alpha_opcode * | |
32ff5c2e | 2070 | find_opcode_match (first_opcode, tok, pntok, pcpumatch) |
252b5132 RH |
2071 | const struct alpha_opcode *first_opcode; |
2072 | const expressionS *tok; | |
2073 | int *pntok; | |
2074 | int *pcpumatch; | |
2075 | { | |
2076 | const struct alpha_opcode *opcode = first_opcode; | |
2077 | int ntok = *pntok; | |
2078 | int got_cpu_match = 0; | |
2079 | ||
2080 | do | |
2081 | { | |
2082 | const unsigned char *opidx; | |
2083 | int tokidx = 0; | |
2084 | ||
2085 | /* Don't match opcodes that don't exist on this architecture */ | |
2086 | if (!(opcode->flags & alpha_target)) | |
2087 | goto match_failed; | |
2088 | ||
2089 | got_cpu_match = 1; | |
2090 | ||
2091 | for (opidx = opcode->operands; *opidx; ++opidx) | |
2092 | { | |
2093 | const struct alpha_operand *operand = &alpha_operands[*opidx]; | |
2094 | ||
2095 | /* only take input from real operands */ | |
2096 | if (operand->flags & AXP_OPERAND_FAKE) | |
2097 | continue; | |
2098 | ||
2099 | /* when we expect input, make sure we have it */ | |
2100 | if (tokidx >= ntok) | |
2101 | { | |
2102 | if ((operand->flags & AXP_OPERAND_OPTIONAL_MASK) == 0) | |
2103 | goto match_failed; | |
2104 | continue; | |
2105 | } | |
2106 | ||
2107 | /* match operand type with expression type */ | |
2108 | switch (operand->flags & AXP_OPERAND_TYPECHECK_MASK) | |
2109 | { | |
2110 | case AXP_OPERAND_IR: | |
2111 | if (tok[tokidx].X_op != O_register | |
32ff5c2e | 2112 | || !is_ir_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2113 | goto match_failed; |
2114 | break; | |
2115 | case AXP_OPERAND_FPR: | |
2116 | if (tok[tokidx].X_op != O_register | |
32ff5c2e | 2117 | || !is_fpr_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2118 | goto match_failed; |
2119 | break; | |
66498417 | 2120 | case AXP_OPERAND_IR | AXP_OPERAND_PARENS: |
252b5132 | 2121 | if (tok[tokidx].X_op != O_pregister |
32ff5c2e | 2122 | || !is_ir_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2123 | goto match_failed; |
2124 | break; | |
66498417 | 2125 | case AXP_OPERAND_IR | AXP_OPERAND_PARENS | AXP_OPERAND_COMMA: |
252b5132 | 2126 | if (tok[tokidx].X_op != O_cpregister |
32ff5c2e | 2127 | || !is_ir_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2128 | goto match_failed; |
2129 | break; | |
2130 | ||
2131 | case AXP_OPERAND_RELATIVE: | |
2132 | case AXP_OPERAND_SIGNED: | |
2133 | case AXP_OPERAND_UNSIGNED: | |
2134 | switch (tok[tokidx].X_op) | |
2135 | { | |
2136 | case O_illegal: | |
2137 | case O_absent: | |
2138 | case O_register: | |
2139 | case O_pregister: | |
2140 | case O_cpregister: | |
2141 | goto match_failed; | |
2142 | ||
2143 | default: | |
2144 | break; | |
2145 | } | |
2146 | break; | |
2147 | ||
2148 | default: | |
2149 | /* everything else should have been fake */ | |
bc805888 | 2150 | abort (); |
252b5132 RH |
2151 | } |
2152 | ++tokidx; | |
2153 | } | |
2154 | ||
2155 | /* possible match -- did we use all of our input? */ | |
2156 | if (tokidx == ntok) | |
2157 | { | |
2158 | *pntok = ntok; | |
2159 | return opcode; | |
2160 | } | |
2161 | ||
2162 | match_failed:; | |
2163 | } | |
66498417 | 2164 | while (++opcode - alpha_opcodes < alpha_num_opcodes |
32ff5c2e | 2165 | && !strcmp (opcode->name, first_opcode->name)); |
252b5132 RH |
2166 | |
2167 | if (*pcpumatch) | |
1aad8cf8 | 2168 | *pcpumatch = got_cpu_match; |
252b5132 RH |
2169 | |
2170 | return NULL; | |
2171 | } | |
2172 | ||
2173 | /* Search forward through all variants of a macro looking for a syntax | |
2174 | match. */ | |
2175 | ||
2176 | static const struct alpha_macro * | |
32ff5c2e | 2177 | find_macro_match (first_macro, tok, pntok) |
252b5132 RH |
2178 | const struct alpha_macro *first_macro; |
2179 | const expressionS *tok; | |
2180 | int *pntok; | |
2181 | { | |
2182 | const struct alpha_macro *macro = first_macro; | |
2183 | int ntok = *pntok; | |
2184 | ||
2185 | do | |
2186 | { | |
2187 | const enum alpha_macro_arg *arg = macro->argsets; | |
2188 | int tokidx = 0; | |
2189 | ||
2190 | while (*arg) | |
2191 | { | |
2192 | switch (*arg) | |
2193 | { | |
2194 | case MACRO_EOA: | |
2195 | if (tokidx == ntok) | |
2196 | return macro; | |
2197 | else | |
2198 | tokidx = 0; | |
2199 | break; | |
2200 | ||
43b4c25e | 2201 | /* index register */ |
252b5132 RH |
2202 | case MACRO_IR: |
2203 | if (tokidx >= ntok || tok[tokidx].X_op != O_register | |
32ff5c2e | 2204 | || !is_ir_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2205 | goto match_failed; |
2206 | ++tokidx; | |
2207 | break; | |
43b4c25e MM |
2208 | |
2209 | /* parenthesized index register */ | |
252b5132 RH |
2210 | case MACRO_PIR: |
2211 | if (tokidx >= ntok || tok[tokidx].X_op != O_pregister | |
32ff5c2e | 2212 | || !is_ir_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2213 | goto match_failed; |
2214 | ++tokidx; | |
2215 | break; | |
43b4c25e MM |
2216 | |
2217 | /* optional parenthesized index register */ | |
2218 | case MACRO_OPIR: | |
2219 | if (tokidx < ntok && tok[tokidx].X_op == O_pregister | |
32ff5c2e | 2220 | && is_ir_num (tok[tokidx].X_add_number)) |
43b4c25e MM |
2221 | ++tokidx; |
2222 | break; | |
2223 | ||
2224 | /* leading comma with a parenthesized index register */ | |
252b5132 RH |
2225 | case MACRO_CPIR: |
2226 | if (tokidx >= ntok || tok[tokidx].X_op != O_cpregister | |
32ff5c2e | 2227 | || !is_ir_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2228 | goto match_failed; |
2229 | ++tokidx; | |
2230 | break; | |
43b4c25e MM |
2231 | |
2232 | /* floating point register */ | |
252b5132 RH |
2233 | case MACRO_FPR: |
2234 | if (tokidx >= ntok || tok[tokidx].X_op != O_register | |
32ff5c2e | 2235 | || !is_fpr_num (tok[tokidx].X_add_number)) |
252b5132 RH |
2236 | goto match_failed; |
2237 | ++tokidx; | |
2238 | break; | |
2239 | ||
43b4c25e | 2240 | /* normal expression */ |
252b5132 RH |
2241 | case MACRO_EXP: |
2242 | if (tokidx >= ntok) | |
2243 | goto match_failed; | |
2244 | switch (tok[tokidx].X_op) | |
2245 | { | |
2246 | case O_illegal: | |
2247 | case O_absent: | |
2248 | case O_register: | |
2249 | case O_pregister: | |
2250 | case O_cpregister: | |
43b4c25e MM |
2251 | #ifdef RELOC_OP_P |
2252 | case O_literal: | |
2253 | case O_lituse_base: | |
2254 | case O_lituse_bytoff: | |
2255 | case O_lituse_jsr: | |
2256 | case O_gpdisp: | |
2257 | case O_gprelhigh: | |
2258 | case O_gprellow: | |
2259 | #endif | |
252b5132 RH |
2260 | goto match_failed; |
2261 | ||
2262 | default: | |
2263 | break; | |
2264 | } | |
2265 | ++tokidx; | |
2266 | break; | |
2267 | ||
43b4c25e MM |
2268 | /* optional !literal!<number> */ |
2269 | case MACRO_LITERAL: | |
2270 | #ifdef RELOC_OP_P | |
2271 | if (tokidx < ntok && tok[tokidx].X_op == O_literal) | |
2272 | tokidx++; | |
2273 | #endif | |
2274 | break; | |
2275 | ||
2276 | /* optional !lituse_base!<number> */ | |
2277 | case MACRO_BASE: | |
2278 | #ifdef RELOC_OP_P | |
2279 | if (tokidx < ntok && tok[tokidx].X_op == O_lituse_base) | |
2280 | tokidx++; | |
2281 | #endif | |
2282 | break; | |
2283 | ||
2284 | /* optional !lituse_bytoff!<number> */ | |
2285 | case MACRO_BYTOFF: | |
2286 | #ifdef RELOC_OP_P | |
2287 | if (tokidx < ntok && tok[tokidx].X_op == O_lituse_bytoff) | |
2288 | tokidx++; | |
2289 | #endif | |
2290 | break; | |
2291 | ||
2292 | /* optional !lituse_jsr!<number> */ | |
2293 | case MACRO_JSR: | |
2294 | #ifdef RELOC_OP_P | |
2295 | if (tokidx < ntok && tok[tokidx].X_op == O_lituse_jsr) | |
2296 | tokidx++; | |
2297 | #endif | |
2298 | break; | |
2299 | ||
252b5132 RH |
2300 | match_failed: |
2301 | while (*arg != MACRO_EOA) | |
2302 | ++arg; | |
2303 | tokidx = 0; | |
2304 | break; | |
2305 | } | |
2306 | ++arg; | |
2307 | } | |
2308 | } | |
66498417 | 2309 | while (++macro - alpha_macros < alpha_num_macros |
32ff5c2e | 2310 | && !strcmp (macro->name, first_macro->name)); |
252b5132 RH |
2311 | |
2312 | return NULL; | |
2313 | } | |
2314 | ||
2315 | /* Insert an operand value into an instruction. */ | |
2316 | ||
2317 | static unsigned | |
32ff5c2e | 2318 | insert_operand (insn, operand, val, file, line) |
252b5132 RH |
2319 | unsigned insn; |
2320 | const struct alpha_operand *operand; | |
2321 | offsetT val; | |
2322 | char *file; | |
2323 | unsigned line; | |
2324 | { | |
2325 | if (operand->bits != 32 && !(operand->flags & AXP_OPERAND_NOOVERFLOW)) | |
2326 | { | |
2327 | offsetT min, max; | |
2328 | ||
2329 | if (operand->flags & AXP_OPERAND_SIGNED) | |
2330 | { | |
2331 | max = (1 << (operand->bits - 1)) - 1; | |
2332 | min = -(1 << (operand->bits - 1)); | |
2333 | } | |
2334 | else | |
2335 | { | |
2336 | max = (1 << operand->bits) - 1; | |
2337 | min = 0; | |
2338 | } | |
2339 | ||
2340 | if (val < min || val > max) | |
2341 | { | |
2342 | const char *err = | |
2343 | _("operand out of range (%s not between %d and %d)"); | |
2344 | char buf[sizeof (val) * 3 + 2]; | |
2345 | ||
32ff5c2e | 2346 | sprint_value (buf, val); |
252b5132 | 2347 | if (file) |
32ff5c2e | 2348 | as_warn_where (file, line, err, buf, min, max); |
252b5132 | 2349 | else |
32ff5c2e | 2350 | as_warn (err, buf, min, max); |
252b5132 RH |
2351 | } |
2352 | } | |
2353 | ||
2354 | if (operand->insert) | |
2355 | { | |
2356 | const char *errmsg = NULL; | |
2357 | ||
2358 | insn = (*operand->insert) (insn, val, &errmsg); | |
2359 | if (errmsg) | |
2360 | as_warn (errmsg); | |
2361 | } | |
2362 | else | |
2363 | insn |= ((val & ((1 << operand->bits) - 1)) << operand->shift); | |
2364 | ||
2365 | return insn; | |
2366 | } | |
2367 | ||
2368 | /* | |
2369 | * Turn an opcode description and a set of arguments into | |
2370 | * an instruction and a fixup. | |
2371 | */ | |
2372 | ||
2373 | static void | |
32ff5c2e | 2374 | assemble_insn (opcode, tok, ntok, insn) |
252b5132 RH |
2375 | const struct alpha_opcode *opcode; |
2376 | const expressionS *tok; | |
2377 | int ntok; | |
2378 | struct alpha_insn *insn; | |
2379 | { | |
2380 | const unsigned char *argidx; | |
2381 | unsigned image; | |
2382 | int tokidx = 0; | |
2383 | ||
2384 | memset (insn, 0, sizeof (*insn)); | |
2385 | image = opcode->opcode; | |
2386 | ||
2387 | for (argidx = opcode->operands; *argidx; ++argidx) | |
2388 | { | |
2389 | const struct alpha_operand *operand = &alpha_operands[*argidx]; | |
32ff5c2e | 2390 | const expressionS *t = (const expressionS *) 0; |
252b5132 RH |
2391 | |
2392 | if (operand->flags & AXP_OPERAND_FAKE) | |
2393 | { | |
2394 | /* fake operands take no value and generate no fixup */ | |
32ff5c2e | 2395 | image = insert_operand (image, operand, 0, NULL, 0); |
252b5132 RH |
2396 | continue; |
2397 | } | |
2398 | ||
2399 | if (tokidx >= ntok) | |
2400 | { | |
2401 | switch (operand->flags & AXP_OPERAND_OPTIONAL_MASK) | |
2402 | { | |
2403 | case AXP_OPERAND_DEFAULT_FIRST: | |
2404 | t = &tok[0]; | |
2405 | break; | |
2406 | case AXP_OPERAND_DEFAULT_SECOND: | |
2407 | t = &tok[1]; | |
2408 | break; | |
2409 | case AXP_OPERAND_DEFAULT_ZERO: | |
2410 | { | |
446a06c9 | 2411 | static expressionS zero_exp; |
252b5132 | 2412 | t = &zero_exp; |
446a06c9 MM |
2413 | zero_exp.X_op = O_constant; |
2414 | zero_exp.X_unsigned = 1; | |
252b5132 RH |
2415 | } |
2416 | break; | |
2417 | default: | |
bc805888 | 2418 | abort (); |
252b5132 RH |
2419 | } |
2420 | } | |
2421 | else | |
2422 | t = &tok[tokidx++]; | |
2423 | ||
2424 | switch (t->X_op) | |
2425 | { | |
2426 | case O_register: | |
2427 | case O_pregister: | |
2428 | case O_cpregister: | |
32ff5c2e KH |
2429 | image = insert_operand (image, operand, regno (t->X_add_number), |
2430 | NULL, 0); | |
252b5132 RH |
2431 | break; |
2432 | ||
2433 | case O_constant: | |
32ff5c2e | 2434 | image = insert_operand (image, operand, t->X_add_number, NULL, 0); |
252b5132 RH |
2435 | break; |
2436 | ||
2437 | default: | |
2438 | { | |
2439 | struct alpha_fixup *fixup; | |
2440 | ||
2441 | if (insn->nfixups >= MAX_INSN_FIXUPS) | |
32ff5c2e | 2442 | as_fatal (_("too many fixups")); |
252b5132 RH |
2443 | |
2444 | fixup = &insn->fixups[insn->nfixups++]; | |
2445 | ||
2446 | fixup->exp = *t; | |
2447 | fixup->reloc = operand->default_reloc; | |
2448 | } | |
2449 | break; | |
2450 | } | |
2451 | } | |
2452 | ||
2453 | insn->insn = image; | |
2454 | } | |
2455 | ||
2456 | /* | |
2457 | * Actually output an instruction with its fixup. | |
2458 | */ | |
2459 | ||
2460 | static void | |
2461 | emit_insn (insn) | |
66498417 | 2462 | struct alpha_insn *insn; |
252b5132 RH |
2463 | { |
2464 | char *f; | |
2465 | int i; | |
2466 | ||
66498417 | 2467 | /* Take care of alignment duties. */ |
252b5132 RH |
2468 | if (alpha_auto_align_on && alpha_current_align < 2) |
2469 | alpha_align (2, (char *) NULL, alpha_insn_label, 0); | |
2470 | if (alpha_current_align > 2) | |
2471 | alpha_current_align = 2; | |
2472 | alpha_insn_label = NULL; | |
2473 | ||
2474 | /* Write out the instruction. */ | |
2475 | f = frag_more (4); | |
2476 | md_number_to_chars (f, insn->insn, 4); | |
2477 | ||
4dc7ead9 RH |
2478 | #ifdef OBJ_ELF |
2479 | dwarf2_emit_insn (4); | |
2480 | #endif | |
2481 | ||
252b5132 RH |
2482 | /* Apply the fixups in order */ |
2483 | for (i = 0; i < insn->nfixups; ++i) | |
2484 | { | |
32ff5c2e | 2485 | const struct alpha_operand *operand = (const struct alpha_operand *) 0; |
252b5132 RH |
2486 | struct alpha_fixup *fixup = &insn->fixups[i]; |
2487 | int size, pcrel; | |
2488 | fixS *fixP; | |
43b4c25e MM |
2489 | #ifdef RELOC_OP_P |
2490 | char buffer[ALPHA_RELOC_DIGITS]; | |
2491 | struct alpha_literal_tag *info; | |
2492 | #endif | |
252b5132 RH |
2493 | |
2494 | /* Some fixups are only used internally and so have no howto */ | |
32ff5c2e | 2495 | if ((int) fixup->reloc < 0) |
252b5132 | 2496 | { |
32ff5c2e | 2497 | operand = &alpha_operands[-(int) fixup->reloc]; |
252b5132 RH |
2498 | size = 4; |
2499 | pcrel = ((operand->flags & AXP_OPERAND_RELATIVE) != 0); | |
2500 | } | |
1aad8cf8 KH |
2501 | else |
2502 | switch (fixup->reloc) | |
2503 | { | |
43b4c25e | 2504 | #ifdef OBJ_ELF |
1aad8cf8 KH |
2505 | /* These relocation types are only used internally. */ |
2506 | case BFD_RELOC_ALPHA_GPDISP_HI16: | |
2507 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
2508 | size = 2; | |
2509 | pcrel = 0; | |
2510 | break; | |
43b4c25e MM |
2511 | #endif |
2512 | #ifdef RELOC_OP_P | |
1aad8cf8 KH |
2513 | /* and these also are internal only relocations */ |
2514 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
2515 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
2516 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
2517 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
2518 | case BFD_RELOC_ALPHA_USER_GPDISP: | |
2519 | case BFD_RELOC_ALPHA_USER_GPRELHIGH: | |
2520 | case BFD_RELOC_ALPHA_USER_GPRELLOW: | |
2521 | size = 2; | |
2522 | pcrel = 0; | |
2523 | break; | |
252b5132 | 2524 | #endif |
252b5132 | 2525 | |
1aad8cf8 KH |
2526 | default: |
2527 | { | |
2528 | reloc_howto_type *reloc_howto | |
2529 | = bfd_reloc_type_lookup (stdoutput, fixup->reloc); | |
2530 | assert (reloc_howto); | |
43b4c25e | 2531 | |
1aad8cf8 KH |
2532 | size = bfd_get_reloc_size (reloc_howto); |
2533 | pcrel = reloc_howto->pc_relative; | |
2534 | } | |
2535 | assert (size >= 1 && size <= 4); | |
2536 | break; | |
43b4c25e | 2537 | } |
252b5132 RH |
2538 | |
2539 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal, size, | |
2540 | &fixup->exp, pcrel, fixup->reloc); | |
2541 | ||
43b4c25e MM |
2542 | /* Turn off complaints that the addend is too large for some fixups, |
2543 | and copy in the sequence number for the explicit relocations. */ | |
252b5132 RH |
2544 | switch (fixup->reloc) |
2545 | { | |
2546 | case BFD_RELOC_ALPHA_GPDISP_LO16: | |
2547 | #ifdef OBJ_ECOFF | |
2548 | case BFD_RELOC_ALPHA_LITERAL: | |
2549 | #endif | |
2550 | #ifdef OBJ_ELF | |
2551 | case BFD_RELOC_ALPHA_ELF_LITERAL: | |
2552 | #endif | |
2553 | case BFD_RELOC_GPREL32: | |
2554 | fixP->fx_no_overflow = 1; | |
2555 | break; | |
2556 | ||
43b4c25e MM |
2557 | #ifdef RELOC_OP_P |
2558 | case BFD_RELOC_ALPHA_USER_LITERAL: | |
2559 | fixP->fx_no_overflow = 1; | |
2560 | sprintf (buffer, "!%u", insn->sequence[i]); | |
2561 | info = ((struct alpha_literal_tag *) | |
2562 | hash_find (alpha_literal_hash, buffer)); | |
2563 | ||
2564 | if (! info) | |
2565 | { | |
2566 | size_t len = strlen (buffer); | |
2567 | const char *errmsg; | |
2568 | ||
2569 | info = ((struct alpha_literal_tag *) | |
2570 | xcalloc (sizeof (struct alpha_literal_tag) + len, 1)); | |
2571 | ||
2572 | info->segment = now_seg; | |
2573 | info->sequence = insn->sequence[i]; | |
2574 | strcpy (info->string, buffer); | |
32ff5c2e | 2575 | errmsg = hash_insert (alpha_literal_hash, info->string, (PTR) info); |
43b4c25e MM |
2576 | if (errmsg) |
2577 | as_bad (errmsg); | |
2578 | } | |
2579 | ||
2580 | ++info->n_literals; | |
2581 | ||
2582 | if (info->segment != now_seg) | |
2583 | info->multi_section_p = 1; | |
2584 | ||
2585 | fixP->tc_fix_data.info = info; | |
2586 | break; | |
2587 | ||
2588 | case BFD_RELOC_ALPHA_USER_LITUSE_BASE: | |
2589 | case BFD_RELOC_ALPHA_USER_LITUSE_BYTOFF: | |
2590 | case BFD_RELOC_ALPHA_USER_LITUSE_JSR: | |
2591 | sprintf (buffer, "!%u", insn->sequence[i]); | |
2592 | info = ((struct alpha_literal_tag *) | |
2593 | hash_find (alpha_literal_hash, buffer)); | |
2594 | ||
2595 | if (! info) | |
2596 | { | |
2597 | size_t len = strlen (buffer); | |
2598 | const char *errmsg; | |
2599 | ||
2600 | info = ((struct alpha_literal_tag *) | |
2601 | xcalloc (sizeof (struct alpha_literal_tag) + len, 1)); | |
2602 | ||
2603 | info->segment = now_seg; | |
2604 | info->sequence = insn->sequence[i]; | |
2605 | strcpy (info->string, buffer); | |
32ff5c2e | 2606 | errmsg = hash_insert (alpha_literal_hash, info->string, (PTR) info); |
43b4c25e MM |
2607 | if (errmsg) |
2608 | as_bad (errmsg); | |
2609 | } | |
2610 | info->n_lituses++; | |
2611 | fixP->tc_fix_data.info = info; | |
2612 | fixP->tc_fix_data.next_lituse = info->lituse; | |
2613 | info->lituse = fixP; | |
2614 | if (info->segment != now_seg) | |
2615 | info->multi_section_p = 1; | |
2616 | ||
2617 | break; | |
2618 | #endif | |
2619 | ||
252b5132 | 2620 | default: |
32ff5c2e | 2621 | if ((int) fixup->reloc < 0) |
252b5132 RH |
2622 | { |
2623 | if (operand->flags & AXP_OPERAND_NOOVERFLOW) | |
2624 | fixP->fx_no_overflow = 1; | |
2625 | } | |
2626 | break; | |
2627 | } | |
2628 | } | |
2629 | } | |
2630 | ||
2631 | /* Given an opcode name and a pre-tokenized set of arguments, assemble | |
2632 | the insn, but do not emit it. | |
2633 | ||
2634 | Note that this implies no macros allowed, since we can't store more | |
2635 | than one insn in an insn structure. */ | |
2636 | ||
2637 | static void | |
32ff5c2e | 2638 | assemble_tokens_to_insn (opname, tok, ntok, insn) |
252b5132 RH |
2639 | const char *opname; |
2640 | const expressionS *tok; | |
2641 | int ntok; | |
2642 | struct alpha_insn *insn; | |
2643 | { | |
2644 | const struct alpha_opcode *opcode; | |
2645 | ||
2646 | /* search opcodes */ | |
2647 | opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname); | |
2648 | if (opcode) | |
2649 | { | |
2650 | int cpumatch; | |
2651 | opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch); | |
2652 | if (opcode) | |
2653 | { | |
2654 | assemble_insn (opcode, tok, ntok, insn); | |
2655 | return; | |
2656 | } | |
2657 | else if (cpumatch) | |
2658 | as_bad (_("inappropriate arguments for opcode `%s'"), opname); | |
2659 | else | |
2660 | as_bad (_("opcode `%s' not supported for target %s"), opname, | |
1aad8cf8 | 2661 | alpha_target_name); |
252b5132 RH |
2662 | } |
2663 | else | |
2664 | as_bad (_("unknown opcode `%s'"), opname); | |
2665 | } | |
2666 | ||
2667 | /* Given an opcode name and a pre-tokenized set of arguments, take the | |
2668 | opcode all the way through emission. */ | |
2669 | ||
2670 | static void | |
2671 | assemble_tokens (opname, tok, ntok, local_macros_on) | |
2672 | const char *opname; | |
2673 | const expressionS *tok; | |
2674 | int ntok; | |
2675 | int local_macros_on; | |
2676 | { | |
2677 | int found_something = 0; | |
2678 | const struct alpha_opcode *opcode; | |
2679 | const struct alpha_macro *macro; | |
2680 | int cpumatch = 1; | |
2681 | ||
2682 | /* search macros */ | |
2683 | if (local_macros_on) | |
2684 | { | |
2685 | macro = ((const struct alpha_macro *) | |
2686 | hash_find (alpha_macro_hash, opname)); | |
2687 | if (macro) | |
2688 | { | |
2689 | found_something = 1; | |
2690 | macro = find_macro_match (macro, tok, &ntok); | |
2691 | if (macro) | |
2692 | { | |
2693 | (*macro->emit) (tok, ntok, macro->arg); | |
2694 | return; | |
2695 | } | |
2696 | } | |
2697 | } | |
2698 | ||
43b4c25e | 2699 | #ifdef RELOC_OP_P |
66498417 | 2700 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 2701 | { |
66498417 | 2702 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
2703 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
2704 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 2705 | (int) reloc_exp->X_add_number, opname); |
43b4c25e MM |
2706 | ntok--; |
2707 | } | |
2708 | #endif | |
2709 | ||
252b5132 RH |
2710 | /* search opcodes */ |
2711 | opcode = (const struct alpha_opcode *) hash_find (alpha_opcode_hash, opname); | |
2712 | if (opcode) | |
2713 | { | |
2714 | found_something = 1; | |
2715 | opcode = find_opcode_match (opcode, tok, &ntok, &cpumatch); | |
2716 | if (opcode) | |
2717 | { | |
2718 | struct alpha_insn insn; | |
2719 | assemble_insn (opcode, tok, ntok, &insn); | |
2720 | emit_insn (&insn); | |
2721 | return; | |
2722 | } | |
2723 | } | |
2724 | ||
2725 | if (found_something) | |
2726 | if (cpumatch) | |
2727 | as_bad (_("inappropriate arguments for opcode `%s'"), opname); | |
2728 | else | |
2729 | as_bad (_("opcode `%s' not supported for target %s"), opname, | |
2730 | alpha_target_name); | |
2731 | else | |
2732 | as_bad (_("unknown opcode `%s'"), opname); | |
2733 | } | |
252b5132 RH |
2734 | \f |
2735 | /* Some instruction sets indexed by lg(size) */ | |
2736 | static const char * const sextX_op[] = { "sextb", "sextw", "sextl", NULL }; | |
2737 | static const char * const insXl_op[] = { "insbl", "inswl", "insll", "insql" }; | |
2738 | static const char * const insXh_op[] = { NULL, "inswh", "inslh", "insqh" }; | |
2739 | static const char * const extXl_op[] = { "extbl", "extwl", "extll", "extql" }; | |
2740 | static const char * const extXh_op[] = { NULL, "extwh", "extlh", "extqh" }; | |
2741 | static const char * const mskXl_op[] = { "mskbl", "mskwl", "mskll", "mskql" }; | |
2742 | static const char * const mskXh_op[] = { NULL, "mskwh", "msklh", "mskqh" }; | |
2743 | static const char * const stX_op[] = { "stb", "stw", "stl", "stq" }; | |
2744 | static const char * const ldX_op[] = { "ldb", "ldw", "ldll", "ldq" }; | |
2745 | static const char * const ldXu_op[] = { "ldbu", "ldwu", NULL, NULL }; | |
2746 | ||
2747 | /* Implement the ldgp macro. */ | |
2748 | ||
2749 | static void | |
2750 | emit_ldgp (tok, ntok, unused) | |
2751 | const expressionS *tok; | |
446a06c9 MM |
2752 | int ntok ATTRIBUTE_UNUSED; |
2753 | const PTR unused ATTRIBUTE_UNUSED; | |
252b5132 RH |
2754 | { |
2755 | #ifdef OBJ_AOUT | |
2756 | FIXME | |
2757 | #endif | |
2758 | #if defined(OBJ_ECOFF) || defined(OBJ_ELF) | |
2759 | /* from "ldgp r1,n(r2)", generate "ldah r1,X(R2); lda r1,Y(r1)" | |
2760 | with appropriate constants and relocations. */ | |
2761 | struct alpha_insn insn; | |
2762 | expressionS newtok[3]; | |
2763 | expressionS addend; | |
2764 | ||
43b4c25e | 2765 | #ifdef RELOC_OP_P |
66498417 | 2766 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 2767 | { |
66498417 | 2768 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
2769 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
2770 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 2771 | (int) reloc_exp->X_add_number, "ldgp"); |
43b4c25e MM |
2772 | ntok--; |
2773 | } | |
2774 | #endif | |
2775 | ||
252b5132 RH |
2776 | #ifdef OBJ_ECOFF |
2777 | if (regno (tok[2].X_add_number) == AXP_REG_PV) | |
2778 | ecoff_set_gp_prolog_size (0); | |
2779 | #endif | |
2780 | ||
2781 | newtok[0] = tok[0]; | |
2782 | set_tok_const (newtok[1], 0); | |
2783 | newtok[2] = tok[2]; | |
2784 | ||
2785 | assemble_tokens_to_insn ("ldah", newtok, 3, &insn); | |
2786 | ||
2787 | addend = tok[1]; | |
2788 | ||
2789 | #ifdef OBJ_ECOFF | |
2790 | if (addend.X_op != O_constant) | |
2791 | as_bad (_("can not resolve expression")); | |
2792 | addend.X_op = O_symbol; | |
2793 | addend.X_add_symbol = alpha_gp_symbol; | |
2794 | #endif | |
2795 | ||
2796 | insn.nfixups = 1; | |
2797 | insn.fixups[0].exp = addend; | |
2798 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_GPDISP_HI16; | |
2799 | ||
2800 | emit_insn (&insn); | |
2801 | ||
2802 | set_tok_preg (newtok[2], tok[0].X_add_number); | |
2803 | ||
2804 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
2805 | ||
2806 | #ifdef OBJ_ECOFF | |
2807 | addend.X_add_number += 4; | |
2808 | #endif | |
2809 | ||
2810 | insn.nfixups = 1; | |
2811 | insn.fixups[0].exp = addend; | |
2812 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_GPDISP_LO16; | |
2813 | ||
2814 | emit_insn (&insn); | |
2815 | #endif /* OBJ_ECOFF || OBJ_ELF */ | |
2816 | } | |
2817 | ||
2818 | #ifdef OBJ_EVAX | |
2819 | ||
2820 | /* Add symbol+addend to link pool. | |
2821 | Return offset from basesym to entry in link pool. | |
2822 | ||
2823 | Add new fixup only if offset isn't 16bit. */ | |
2824 | ||
2825 | valueT | |
2826 | add_to_link_pool (basesym, sym, addend) | |
2827 | symbolS *basesym; | |
2828 | symbolS *sym; | |
2829 | offsetT addend; | |
2830 | { | |
2831 | segT current_section = now_seg; | |
2832 | int current_subsec = now_subseg; | |
2833 | valueT offset; | |
2834 | bfd_reloc_code_real_type reloc_type; | |
2835 | char *p; | |
2836 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
2837 | fixS *fixp; | |
2838 | ||
7dcc9865 | 2839 | offset = - *symbol_get_obj (basesym); |
252b5132 RH |
2840 | |
2841 | /* @@ This assumes all entries in a given section will be of the same | |
2842 | size... Probably correct, but unwise to rely on. */ | |
2843 | /* This must always be called with the same subsegment. */ | |
2844 | ||
2845 | if (seginfo->frchainP) | |
2846 | for (fixp = seginfo->frchainP->fix_root; | |
2847 | fixp != (fixS *) NULL; | |
2848 | fixp = fixp->fx_next, offset += 8) | |
2849 | { | |
2850 | if (fixp->fx_addsy == sym && fixp->fx_offset == addend) | |
2851 | { | |
2852 | if (range_signed_16 (offset)) | |
2853 | { | |
1aad8cf8 | 2854 | return offset; |
252b5132 RH |
2855 | } |
2856 | } | |
2857 | } | |
2858 | ||
2859 | /* Not found in 16bit signed range. */ | |
2860 | ||
2861 | subseg_set (alpha_link_section, 0); | |
2862 | p = frag_more (8); | |
2863 | memset (p, 0, 8); | |
2864 | ||
2865 | fix_new (frag_now, p - frag_now->fr_literal, 8, sym, addend, 0, | |
2866 | BFD_RELOC_64); | |
2867 | ||
2868 | subseg_set (current_section, current_subsec); | |
2869 | seginfo->literal_pool_size += 8; | |
2870 | return offset; | |
2871 | } | |
2872 | ||
2873 | #endif /* OBJ_EVAX */ | |
2874 | ||
2875 | /* Load a (partial) expression into a target register. | |
2876 | ||
2877 | If poffset is not null, after the call it will either contain | |
2878 | O_constant 0, or a 16-bit offset appropriate for any MEM format | |
2879 | instruction. In addition, pbasereg will be modified to point to | |
2880 | the base register to use in that MEM format instruction. | |
2881 | ||
2882 | In any case, *pbasereg should contain a base register to add to the | |
2883 | expression. This will normally be either AXP_REG_ZERO or | |
2884 | alpha_gp_register. Symbol addresses will always be loaded via $gp, | |
2885 | so "foo($0)" is interpreted as adding the address of foo to $0; | |
2886 | i.e. "ldq $targ, LIT($gp); addq $targ, $0, $targ". Odd, perhaps, | |
2887 | but this is what OSF/1 does. | |
2888 | ||
43b4c25e MM |
2889 | If explicit relocations of the form !literal!<number> are allowed, |
2890 | and used, then explict_reloc with be an expression pointer. | |
2891 | ||
252b5132 RH |
2892 | Finally, the return value is true if the calling macro may emit a |
2893 | LITUSE reloc if otherwise appropriate. */ | |
2894 | ||
2895 | static int | |
43b4c25e | 2896 | load_expression (targreg, exp, pbasereg, poffset, explicit_reloc) |
252b5132 RH |
2897 | int targreg; |
2898 | const expressionS *exp; | |
2899 | int *pbasereg; | |
2900 | expressionS *poffset; | |
43b4c25e | 2901 | const expressionS *explicit_reloc; |
252b5132 RH |
2902 | { |
2903 | int emit_lituse = 0; | |
2904 | offsetT addend = exp->X_add_number; | |
2905 | int basereg = *pbasereg; | |
2906 | struct alpha_insn insn; | |
2907 | expressionS newtok[3]; | |
2908 | ||
2909 | switch (exp->X_op) | |
2910 | { | |
2911 | case O_symbol: | |
2912 | { | |
2913 | #ifdef OBJ_ECOFF | |
2914 | offsetT lit; | |
2915 | ||
2916 | /* attempt to reduce .lit load by splitting the offset from | |
2917 | its symbol when possible, but don't create a situation in | |
2918 | which we'd fail. */ | |
2919 | if (!range_signed_32 (addend) && | |
2920 | (alpha_noat_on || targreg == AXP_REG_AT)) | |
2921 | { | |
2922 | lit = add_to_literal_pool (exp->X_add_symbol, addend, | |
2923 | alpha_lita_section, 8); | |
2924 | addend = 0; | |
2925 | } | |
2926 | else | |
2927 | { | |
2928 | lit = add_to_literal_pool (exp->X_add_symbol, 0, | |
2929 | alpha_lita_section, 8); | |
2930 | } | |
2931 | ||
2932 | if (lit >= 0x8000) | |
2933 | as_fatal (_("overflow in literal (.lita) table")); | |
2934 | ||
2935 | /* emit "ldq r, lit(gp)" */ | |
2936 | ||
2937 | if (basereg != alpha_gp_register && targreg == basereg) | |
2938 | { | |
2939 | if (alpha_noat_on) | |
2940 | as_bad (_("macro requires $at register while noat in effect")); | |
2941 | if (targreg == AXP_REG_AT) | |
2942 | as_bad (_("macro requires $at while $at in use")); | |
2943 | ||
2944 | set_tok_reg (newtok[0], AXP_REG_AT); | |
2945 | } | |
2946 | else | |
2947 | set_tok_reg (newtok[0], targreg); | |
2948 | set_tok_sym (newtok[1], alpha_lita_symbol, lit); | |
2949 | set_tok_preg (newtok[2], alpha_gp_register); | |
2950 | ||
2951 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2952 | ||
32ff5c2e | 2953 | assert (explicit_reloc == (const expressionS *) 0); |
252b5132 RH |
2954 | assert (insn.nfixups == 1); |
2955 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL; | |
2956 | #endif /* OBJ_ECOFF */ | |
2957 | #ifdef OBJ_ELF | |
2958 | /* emit "ldq r, gotoff(gp)" */ | |
2959 | ||
2960 | if (basereg != alpha_gp_register && targreg == basereg) | |
2961 | { | |
2962 | if (alpha_noat_on) | |
2963 | as_bad (_("macro requires $at register while noat in effect")); | |
2964 | if (targreg == AXP_REG_AT) | |
2965 | as_bad (_("macro requires $at while $at in use")); | |
2966 | ||
2967 | set_tok_reg (newtok[0], AXP_REG_AT); | |
2968 | } | |
2969 | else | |
2970 | set_tok_reg (newtok[0], targreg); | |
2971 | ||
2972 | /* XXX: Disable this .got minimizing optimization so that we can get | |
2973 | better instruction offset knowledge in the compiler. This happens | |
2974 | very infrequently anyway. */ | |
66498417 KH |
2975 | if (1 |
2976 | || (!range_signed_32 (addend) | |
2977 | && (alpha_noat_on || targreg == AXP_REG_AT))) | |
252b5132 RH |
2978 | { |
2979 | newtok[1] = *exp; | |
2980 | addend = 0; | |
2981 | } | |
2982 | else | |
2983 | { | |
2984 | set_tok_sym (newtok[1], exp->X_add_symbol, 0); | |
2985 | } | |
2986 | ||
2987 | set_tok_preg (newtok[2], alpha_gp_register); | |
2988 | ||
2989 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
2990 | ||
2991 | assert (insn.nfixups == 1); | |
43b4c25e MM |
2992 | if (!explicit_reloc) |
2993 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL; | |
2994 | else | |
2995 | { | |
2996 | #ifdef RELOC_OP_P | |
2997 | insn.fixups[0].reloc | |
2998 | = (ALPHA_RELOC_TABLE (explicit_reloc->X_op))->reloc; | |
2999 | insn.sequence[0] = explicit_reloc->X_add_number; | |
3000 | #else | |
3001 | abort (); | |
3002 | #endif | |
3003 | } | |
252b5132 RH |
3004 | #endif /* OBJ_ELF */ |
3005 | #ifdef OBJ_EVAX | |
3006 | offsetT link; | |
3007 | ||
3008 | /* Find symbol or symbol pointer in link section. */ | |
3009 | ||
32ff5c2e | 3010 | assert (explicit_reloc == (const expressionS *) 0); |
252b5132 RH |
3011 | if (exp->X_add_symbol == alpha_evax_proc.symbol) |
3012 | { | |
3013 | if (range_signed_16 (addend)) | |
3014 | { | |
3015 | set_tok_reg (newtok[0], targreg); | |
3016 | set_tok_const (newtok[1], addend); | |
3017 | set_tok_preg (newtok[2], basereg); | |
3018 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
3019 | addend = 0; | |
3020 | } | |
3021 | else | |
3022 | { | |
3023 | set_tok_reg (newtok[0], targreg); | |
3024 | set_tok_const (newtok[1], 0); | |
3025 | set_tok_preg (newtok[2], basereg); | |
3026 | assemble_tokens_to_insn ("lda", newtok, 3, &insn); | |
3027 | } | |
3028 | } | |
3029 | else | |
3030 | { | |
3031 | if (!range_signed_32 (addend)) | |
3032 | { | |
3033 | link = add_to_link_pool (alpha_evax_proc.symbol, | |
3034 | exp->X_add_symbol, addend); | |
3035 | addend = 0; | |
3036 | } | |
3037 | else | |
3038 | { | |
3039 | link = add_to_link_pool (alpha_evax_proc.symbol, | |
3040 | exp->X_add_symbol, 0); | |
3041 | } | |
3042 | set_tok_reg (newtok[0], targreg); | |
3043 | set_tok_const (newtok[1], link); | |
3044 | set_tok_preg (newtok[2], basereg); | |
3045 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
3046 | } | |
3047 | #endif /* OBJ_EVAX */ | |
3048 | ||
32ff5c2e | 3049 | emit_insn (&insn); |
252b5132 RH |
3050 | |
3051 | #ifndef OBJ_EVAX | |
3052 | emit_lituse = 1; | |
3053 | ||
3054 | if (basereg != alpha_gp_register && basereg != AXP_REG_ZERO) | |
3055 | { | |
3056 | /* emit "addq r, base, r" */ | |
3057 | ||
3058 | set_tok_reg (newtok[1], basereg); | |
3059 | set_tok_reg (newtok[2], targreg); | |
3060 | assemble_tokens ("addq", newtok, 3, 0); | |
3061 | } | |
3062 | #endif | |
3063 | ||
3064 | basereg = targreg; | |
3065 | } | |
3066 | break; | |
3067 | ||
3068 | case O_constant: | |
32ff5c2e | 3069 | assert (explicit_reloc == (const expressionS *) 0); |
252b5132 RH |
3070 | break; |
3071 | ||
3072 | case O_subtract: | |
3073 | /* Assume that this difference expression will be resolved to an | |
1dab94dd | 3074 | absolute value and that that value will fit in 16 bits. */ |
252b5132 | 3075 | |
32ff5c2e | 3076 | assert (explicit_reloc == (const expressionS *) 0); |
252b5132 RH |
3077 | set_tok_reg (newtok[0], targreg); |
3078 | newtok[1] = *exp; | |
3079 | set_tok_preg (newtok[2], basereg); | |
3080 | assemble_tokens ("lda", newtok, 3, 0); | |
3081 | ||
3082 | if (poffset) | |
3083 | set_tok_const (*poffset, 0); | |
3084 | return 0; | |
3085 | ||
3086 | case O_big: | |
3087 | if (exp->X_add_number > 0) | |
3088 | as_bad (_("bignum invalid; zero assumed")); | |
3089 | else | |
3090 | as_bad (_("floating point number invalid; zero assumed")); | |
3091 | addend = 0; | |
3092 | break; | |
3093 | ||
3094 | default: | |
3095 | as_bad (_("can't handle expression")); | |
3096 | addend = 0; | |
3097 | break; | |
3098 | } | |
3099 | ||
3100 | if (!range_signed_32 (addend)) | |
3101 | { | |
3102 | offsetT lit; | |
3103 | ||
3104 | /* for 64-bit addends, just put it in the literal pool */ | |
3105 | ||
3106 | #ifdef OBJ_EVAX | |
3107 | /* emit "ldq targreg, lit(basereg)" */ | |
3108 | lit = add_to_link_pool (alpha_evax_proc.symbol, | |
3109 | section_symbol (absolute_section), addend); | |
3110 | set_tok_reg (newtok[0], targreg); | |
3111 | set_tok_const (newtok[1], lit); | |
3112 | set_tok_preg (newtok[2], alpha_gp_register); | |
3113 | assemble_tokens ("ldq", newtok, 3, 0); | |
3114 | #else | |
3115 | ||
3116 | if (alpha_lit8_section == NULL) | |
3117 | { | |
3118 | create_literal_section (".lit8", | |
3119 | &alpha_lit8_section, | |
3120 | &alpha_lit8_symbol); | |
3121 | ||
3122 | #ifdef OBJ_ECOFF | |
3123 | alpha_lit8_literal = add_to_literal_pool (alpha_lit8_symbol, 0x8000, | |
3124 | alpha_lita_section, 8); | |
3125 | if (alpha_lit8_literal >= 0x8000) | |
3126 | as_fatal (_("overflow in literal (.lita) table")); | |
3127 | #endif | |
3128 | } | |
3129 | ||
3130 | lit = add_to_literal_pool (NULL, addend, alpha_lit8_section, 8) - 0x8000; | |
3131 | if (lit >= 0x8000) | |
3132 | as_fatal (_("overflow in literal (.lit8) table")); | |
3133 | ||
3134 | /* emit "lda litreg, .lit8+0x8000" */ | |
3135 | ||
3136 | if (targreg == basereg) | |
3137 | { | |
3138 | if (alpha_noat_on) | |
3139 | as_bad (_("macro requires $at register while noat in effect")); | |
3140 | if (targreg == AXP_REG_AT) | |
3141 | as_bad (_("macro requires $at while $at in use")); | |
3142 | ||
3143 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3144 | } | |
3145 | else | |
3146 | set_tok_reg (newtok[0], targreg); | |
3147 | #ifdef OBJ_ECOFF | |
3148 | set_tok_sym (newtok[1], alpha_lita_symbol, alpha_lit8_literal); | |
3149 | #endif | |
3150 | #ifdef OBJ_ELF | |
3151 | set_tok_sym (newtok[1], alpha_lit8_symbol, 0x8000); | |
3152 | #endif | |
3153 | set_tok_preg (newtok[2], alpha_gp_register); | |
3154 | ||
3155 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
3156 | ||
3157 | assert (insn.nfixups == 1); | |
3158 | #ifdef OBJ_ECOFF | |
3159 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITERAL; | |
3160 | #endif | |
3161 | #ifdef OBJ_ELF | |
3162 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_ELF_LITERAL; | |
3163 | #endif | |
3164 | ||
3165 | emit_insn (&insn); | |
3166 | ||
3167 | /* emit "ldq litreg, lit(litreg)" */ | |
3168 | ||
3169 | set_tok_const (newtok[1], lit); | |
3170 | set_tok_preg (newtok[2], newtok[0].X_add_number); | |
3171 | ||
3172 | assemble_tokens_to_insn ("ldq", newtok, 3, &insn); | |
3173 | ||
3174 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
3175 | if (insn.nfixups > 0) | |
3176 | { | |
3177 | memmove (&insn.fixups[1], &insn.fixups[0], | |
bc805888 | 3178 | sizeof (struct alpha_fixup) * insn.nfixups); |
252b5132 RH |
3179 | } |
3180 | insn.nfixups++; | |
3181 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
3182 | insn.fixups[0].exp.X_op = O_symbol; |
3183 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
43b4c25e | 3184 | insn.fixups[0].exp.X_add_number = LITUSE_BASE; |
252b5132 RH |
3185 | emit_lituse = 0; |
3186 | ||
3187 | emit_insn (&insn); | |
3188 | ||
3189 | /* emit "addq litreg, base, target" */ | |
3190 | ||
3191 | if (basereg != AXP_REG_ZERO) | |
3192 | { | |
3193 | set_tok_reg (newtok[1], basereg); | |
3194 | set_tok_reg (newtok[2], targreg); | |
3195 | assemble_tokens ("addq", newtok, 3, 0); | |
3196 | } | |
3197 | #endif /* !OBJ_EVAX */ | |
3198 | ||
3199 | if (poffset) | |
3200 | set_tok_const (*poffset, 0); | |
3201 | *pbasereg = targreg; | |
3202 | } | |
3203 | else | |
3204 | { | |
3205 | offsetT low, high, extra, tmp; | |
3206 | ||
3207 | /* for 32-bit operands, break up the addend */ | |
3208 | ||
3209 | low = sign_extend_16 (addend); | |
3210 | tmp = addend - low; | |
3211 | high = sign_extend_16 (tmp >> 16); | |
3212 | ||
3213 | if (tmp - (high << 16)) | |
3214 | { | |
3215 | extra = 0x4000; | |
3216 | tmp -= 0x40000000; | |
3217 | high = sign_extend_16 (tmp >> 16); | |
3218 | } | |
3219 | else | |
3220 | extra = 0; | |
3221 | ||
3222 | set_tok_reg (newtok[0], targreg); | |
3223 | set_tok_preg (newtok[2], basereg); | |
3224 | ||
3225 | if (extra) | |
3226 | { | |
3227 | /* emit "ldah r, extra(r) */ | |
3228 | set_tok_const (newtok[1], extra); | |
3229 | assemble_tokens ("ldah", newtok, 3, 0); | |
3230 | set_tok_preg (newtok[2], basereg = targreg); | |
3231 | } | |
3232 | ||
3233 | if (high) | |
3234 | { | |
3235 | /* emit "ldah r, high(r) */ | |
3236 | set_tok_const (newtok[1], high); | |
3237 | assemble_tokens ("ldah", newtok, 3, 0); | |
3238 | basereg = targreg; | |
3239 | set_tok_preg (newtok[2], basereg); | |
3240 | } | |
3241 | ||
3242 | if ((low && !poffset) || (!poffset && basereg != targreg)) | |
3243 | { | |
3244 | /* emit "lda r, low(base)" */ | |
3245 | set_tok_const (newtok[1], low); | |
3246 | assemble_tokens ("lda", newtok, 3, 0); | |
3247 | basereg = targreg; | |
3248 | low = 0; | |
3249 | } | |
3250 | ||
3251 | if (poffset) | |
3252 | set_tok_const (*poffset, low); | |
3253 | *pbasereg = basereg; | |
3254 | } | |
3255 | ||
3256 | return emit_lituse; | |
3257 | } | |
3258 | ||
3259 | /* The lda macro differs from the lda instruction in that it handles | |
3260 | most simple expressions, particualrly symbol address loads and | |
3261 | large constants. */ | |
3262 | ||
3263 | static void | |
43b4c25e | 3264 | emit_lda (tok, ntok, opname) |
252b5132 RH |
3265 | const expressionS *tok; |
3266 | int ntok; | |
43b4c25e | 3267 | const PTR opname; |
252b5132 RH |
3268 | { |
3269 | int basereg; | |
32ff5c2e | 3270 | const expressionS *reloc = (const expressionS *) 0; |
43b4c25e MM |
3271 | |
3272 | #ifdef RELOC_OP_P | |
66498417 | 3273 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e MM |
3274 | { |
3275 | const struct alpha_reloc_op_tag *r; | |
3276 | ||
66498417 | 3277 | reloc = &tok[ntok - 1]; |
43b4c25e MM |
3278 | r = ALPHA_RELOC_TABLE (reloc->X_op); |
3279 | switch (reloc->X_op) | |
3280 | { | |
3281 | default: | |
3282 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3283 | (int) reloc->X_add_number, (const char *) opname); |
43b4c25e | 3284 | |
32ff5c2e | 3285 | reloc = (const expressionS *) 0; |
43b4c25e MM |
3286 | ntok--; |
3287 | break; | |
3288 | ||
3289 | case O_literal: | |
3290 | ntok--; | |
3291 | break; | |
3292 | ||
3293 | /* For lda $x,0($x)!lituse_base!y, don't use load_expression, since | |
3294 | it is really too general for our needs. Instead just generate the | |
3295 | lda directly. */ | |
3296 | case O_lituse_base: | |
3297 | if (ntok != 4 | |
3298 | || tok[0].X_op != O_register | |
32ff5c2e | 3299 | || !is_ir_num (tok[0].X_add_number) |
43b4c25e MM |
3300 | || tok[1].X_op != O_constant |
3301 | || tok[2].X_op != O_pregister | |
32ff5c2e | 3302 | || !is_ir_num (tok[2].X_add_number)) |
43b4c25e | 3303 | { |
4dc7ead9 RH |
3304 | as_bad (_("bad instruction format for lda !%s!%ld"), r->name, |
3305 | (long) reloc->X_add_number); | |
43b4c25e | 3306 | |
32ff5c2e | 3307 | reloc = (const expressionS *) 0; |
43b4c25e MM |
3308 | ntok--; |
3309 | break; | |
3310 | } | |
3311 | ||
3312 | emit_loadstore (tok, ntok, "lda"); | |
3313 | return; | |
3314 | } | |
3315 | } | |
3316 | #endif | |
252b5132 RH |
3317 | |
3318 | if (ntok == 2) | |
3319 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
3320 | else | |
3321 | basereg = tok[2].X_add_number; | |
3322 | ||
43b4c25e | 3323 | (void) load_expression (tok[0].X_add_number, &tok[1], &basereg, NULL, reloc); |
252b5132 RH |
3324 | } |
3325 | ||
3326 | /* The ldah macro differs from the ldah instruction in that it has $31 | |
3327 | as an implied base register. */ | |
3328 | ||
3329 | static void | |
3330 | emit_ldah (tok, ntok, unused) | |
3331 | const expressionS *tok; | |
446a06c9 MM |
3332 | int ntok ATTRIBUTE_UNUSED; |
3333 | const PTR unused ATTRIBUTE_UNUSED; | |
252b5132 RH |
3334 | { |
3335 | expressionS newtok[3]; | |
3336 | ||
43b4c25e | 3337 | #ifdef RELOC_OP_P |
66498417 | 3338 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 3339 | { |
66498417 | 3340 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
3341 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
3342 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3343 | (int) reloc_exp->X_add_number, "ldah"); |
43b4c25e MM |
3344 | ntok--; |
3345 | } | |
3346 | #endif | |
3347 | ||
252b5132 RH |
3348 | newtok[0] = tok[0]; |
3349 | newtok[1] = tok[1]; | |
3350 | set_tok_preg (newtok[2], AXP_REG_ZERO); | |
3351 | ||
3352 | assemble_tokens ("ldah", newtok, 3, 0); | |
3353 | } | |
3354 | ||
3355 | /* Handle all "simple" integer register loads -- ldq, ldq_l, ldq_u, | |
3356 | etc. They differ from the real instructions in that they do simple | |
3357 | expressions like the lda macro. */ | |
3358 | ||
3359 | static void | |
3360 | emit_ir_load (tok, ntok, opname) | |
3361 | const expressionS *tok; | |
3362 | int ntok; | |
3363 | const PTR opname; | |
3364 | { | |
3365 | int basereg, lituse; | |
3366 | expressionS newtok[3]; | |
3367 | struct alpha_insn insn; | |
3368 | ||
43b4c25e | 3369 | #ifdef RELOC_OP_P |
32ff5c2e | 3370 | const expressionS *reloc = (const expressionS *) 0; |
43b4c25e | 3371 | |
66498417 | 3372 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e MM |
3373 | { |
3374 | const struct alpha_reloc_op_tag *r; | |
3375 | ||
66498417 | 3376 | reloc = &tok[ntok - 1]; |
43b4c25e MM |
3377 | switch (reloc->X_op) |
3378 | { | |
3379 | case O_lituse_base: | |
3380 | ntok--; | |
3381 | break; | |
3382 | ||
3383 | case O_literal: | |
32ff5c2e | 3384 | if (strcmp ((const char *) opname, "ldq") == 0) |
43b4c25e MM |
3385 | { |
3386 | emit_lda (tok, ntok, opname); | |
3387 | return; | |
3388 | } | |
3389 | ||
3390 | /* fall through */ | |
3391 | default: | |
3392 | ntok--; | |
3393 | r = ALPHA_RELOC_TABLE (reloc->X_op); | |
3394 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3395 | (int) reloc->X_add_number, (const char *) opname); |
43b4c25e MM |
3396 | } |
3397 | } | |
3398 | #endif | |
3399 | ||
252b5132 RH |
3400 | if (ntok == 2) |
3401 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
3402 | else | |
3403 | basereg = tok[2].X_add_number; | |
3404 | ||
3405 | lituse = load_expression (tok[0].X_add_number, &tok[1], &basereg, | |
32ff5c2e | 3406 | &newtok[1], (const expressionS *) 0); |
252b5132 RH |
3407 | |
3408 | newtok[0] = tok[0]; | |
3409 | set_tok_preg (newtok[2], basereg); | |
3410 | ||
32ff5c2e | 3411 | assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn); |
252b5132 | 3412 | |
43b4c25e MM |
3413 | #ifdef RELOC_OP_P |
3414 | if (reloc) | |
3415 | { | |
3416 | int nfixups = insn.nfixups; | |
3417 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc->X_op); | |
3418 | ||
3419 | assert (nfixups < MAX_INSN_FIXUPS); | |
3420 | insn.fixups[nfixups].reloc = r->reloc; | |
3421 | insn.fixups[nfixups].exp.X_op = O_symbol; | |
3422 | insn.fixups[nfixups].exp.X_add_symbol = section_symbol (now_seg); | |
3423 | insn.fixups[nfixups].exp.X_add_number = r->lituse; | |
3424 | insn.sequence[nfixups] = reloc->X_add_number; | |
3425 | insn.nfixups++; | |
3426 | } | |
3427 | #endif | |
3428 | ||
252b5132 RH |
3429 | if (lituse) |
3430 | { | |
3431 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
3432 | if (insn.nfixups > 0) | |
3433 | { | |
3434 | memmove (&insn.fixups[1], &insn.fixups[0], | |
bc805888 | 3435 | sizeof (struct alpha_fixup) * insn.nfixups); |
252b5132 RH |
3436 | } |
3437 | insn.nfixups++; | |
3438 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
3439 | insn.fixups[0].exp.X_op = O_symbol; |
3440 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
43b4c25e | 3441 | insn.fixups[0].exp.X_add_number = LITUSE_BASE; |
252b5132 RH |
3442 | } |
3443 | ||
3444 | emit_insn (&insn); | |
3445 | } | |
3446 | ||
3447 | /* Handle fp register loads, and both integer and fp register stores. | |
3448 | Again, we handle simple expressions. */ | |
3449 | ||
3450 | static void | |
3451 | emit_loadstore (tok, ntok, opname) | |
3452 | const expressionS *tok; | |
3453 | int ntok; | |
3454 | const PTR opname; | |
3455 | { | |
3456 | int basereg, lituse; | |
3457 | expressionS newtok[3]; | |
3458 | struct alpha_insn insn; | |
3459 | ||
43b4c25e | 3460 | #ifdef RELOC_OP_P |
32ff5c2e | 3461 | const expressionS *reloc = (const expressionS *) 0; |
43b4c25e | 3462 | |
66498417 | 3463 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e MM |
3464 | { |
3465 | reloc = &tok[--ntok]; | |
3466 | if (reloc->X_op != O_lituse_base) | |
3467 | { | |
66498417 | 3468 | const struct alpha_reloc_op_tag *r = &alpha_reloc_op[reloc->X_md]; |
43b4c25e | 3469 | as_bad (_("Cannot use !%s!%d with %s"), r->name, |
32ff5c2e | 3470 | (int) reloc->X_add_number, (const char *) opname); |
43b4c25e MM |
3471 | } |
3472 | } | |
3473 | #endif | |
3474 | ||
252b5132 RH |
3475 | if (ntok == 2) |
3476 | basereg = (tok[1].X_op == O_constant ? AXP_REG_ZERO : alpha_gp_register); | |
3477 | else | |
3478 | basereg = tok[2].X_add_number; | |
3479 | ||
32ff5c2e | 3480 | if (tok[1].X_op != O_constant || !range_signed_16 (tok[1].X_add_number)) |
252b5132 RH |
3481 | { |
3482 | if (alpha_noat_on) | |
3483 | as_bad (_("macro requires $at register while noat in effect")); | |
3484 | ||
43b4c25e | 3485 | lituse = load_expression (AXP_REG_AT, &tok[1], &basereg, &newtok[1], |
32ff5c2e | 3486 | (const expressionS *) 0); |
252b5132 RH |
3487 | } |
3488 | else | |
3489 | { | |
3490 | newtok[1] = tok[1]; | |
3491 | lituse = 0; | |
3492 | } | |
3493 | ||
3494 | newtok[0] = tok[0]; | |
3495 | set_tok_preg (newtok[2], basereg); | |
3496 | ||
32ff5c2e | 3497 | assemble_tokens_to_insn ((const char *) opname, newtok, 3, &insn); |
252b5132 | 3498 | |
43b4c25e MM |
3499 | #ifdef RELOC_OP_P |
3500 | if (reloc) | |
3501 | { | |
3502 | int nfixups = insn.nfixups; | |
3503 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc->X_op); | |
3504 | ||
3505 | assert (nfixups < MAX_INSN_FIXUPS); | |
3506 | insn.fixups[nfixups].reloc = r->reloc; | |
3507 | insn.fixups[nfixups].exp.X_op = O_symbol; | |
3508 | insn.fixups[nfixups].exp.X_add_symbol = section_symbol (now_seg); | |
3509 | insn.fixups[nfixups].exp.X_add_number = r->lituse; | |
3510 | insn.sequence[nfixups] = reloc->X_add_number; | |
3511 | insn.nfixups++; | |
3512 | } | |
3513 | #endif | |
3514 | ||
252b5132 RH |
3515 | if (lituse) |
3516 | { | |
3517 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
3518 | if (insn.nfixups > 0) | |
3519 | { | |
3520 | memmove (&insn.fixups[1], &insn.fixups[0], | |
bc805888 | 3521 | sizeof (struct alpha_fixup) * insn.nfixups); |
252b5132 RH |
3522 | } |
3523 | insn.nfixups++; | |
3524 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
3525 | insn.fixups[0].exp.X_op = O_symbol; |
3526 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
43b4c25e | 3527 | insn.fixups[0].exp.X_add_number = LITUSE_BASE; |
252b5132 RH |
3528 | } |
3529 | ||
3530 | emit_insn (&insn); | |
3531 | } | |
3532 | ||
3533 | /* Load a half-word or byte as an unsigned value. */ | |
3534 | ||
3535 | static void | |
3536 | emit_ldXu (tok, ntok, vlgsize) | |
3537 | const expressionS *tok; | |
3538 | int ntok; | |
3539 | const PTR vlgsize; | |
3540 | { | |
3541 | if (alpha_target & AXP_OPCODE_BWX) | |
32ff5c2e | 3542 | emit_ir_load (tok, ntok, ldXu_op[(long) vlgsize]); |
252b5132 RH |
3543 | else |
3544 | { | |
3545 | expressionS newtok[3]; | |
3546 | ||
43b4c25e | 3547 | #ifdef RELOC_OP_P |
66498417 | 3548 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 3549 | { |
66498417 | 3550 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
3551 | const struct alpha_reloc_op_tag *r |
3552 | = ALPHA_RELOC_TABLE (reloc_exp->X_op); | |
3553 | ||
3554 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3555 | (int) reloc_exp->X_add_number, "ldbu/ldwu"); |
43b4c25e MM |
3556 | ntok--; |
3557 | } | |
3558 | #endif | |
3559 | ||
252b5132 RH |
3560 | if (alpha_noat_on) |
3561 | as_bad (_("macro requires $at register while noat in effect")); | |
3562 | ||
3563 | /* emit "lda $at, exp" */ | |
3564 | ||
3565 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
3566 | newtok[0].X_add_number = AXP_REG_AT; | |
3567 | assemble_tokens ("lda", newtok, ntok, 1); | |
3568 | ||
3569 | /* emit "ldq_u targ, 0($at)" */ | |
3570 | ||
3571 | newtok[0] = tok[0]; | |
3572 | set_tok_const (newtok[1], 0); | |
3573 | set_tok_preg (newtok[2], AXP_REG_AT); | |
3574 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
3575 | ||
3576 | /* emit "extXl targ, $at, targ" */ | |
3577 | ||
3578 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3579 | newtok[2] = newtok[0]; | |
32ff5c2e | 3580 | assemble_tokens (extXl_op[(long) vlgsize], newtok, 3, 1); |
252b5132 RH |
3581 | } |
3582 | } | |
3583 | ||
3584 | /* Load a half-word or byte as a signed value. */ | |
3585 | ||
3586 | static void | |
3587 | emit_ldX (tok, ntok, vlgsize) | |
3588 | const expressionS *tok; | |
3589 | int ntok; | |
3590 | const PTR vlgsize; | |
3591 | { | |
3592 | emit_ldXu (tok, ntok, vlgsize); | |
32ff5c2e | 3593 | assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1); |
252b5132 RH |
3594 | } |
3595 | ||
3596 | /* Load an integral value from an unaligned address as an unsigned | |
3597 | value. */ | |
3598 | ||
3599 | static void | |
3600 | emit_uldXu (tok, ntok, vlgsize) | |
3601 | const expressionS *tok; | |
3602 | int ntok; | |
3603 | const PTR vlgsize; | |
3604 | { | |
32ff5c2e | 3605 | long lgsize = (long) vlgsize; |
252b5132 RH |
3606 | expressionS newtok[3]; |
3607 | ||
3608 | if (alpha_noat_on) | |
3609 | as_bad (_("macro requires $at register while noat in effect")); | |
3610 | ||
3611 | /* emit "lda $at, exp" */ | |
3612 | ||
3613 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
3614 | newtok[0].X_add_number = AXP_REG_AT; | |
3615 | assemble_tokens ("lda", newtok, ntok, 1); | |
3616 | ||
3617 | /* emit "ldq_u $t9, 0($at)" */ | |
3618 | ||
3619 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3620 | set_tok_const (newtok[1], 0); | |
3621 | set_tok_preg (newtok[2], AXP_REG_AT); | |
3622 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
3623 | ||
3624 | /* emit "ldq_u $t10, size-1($at)" */ | |
3625 | ||
3626 | set_tok_reg (newtok[0], AXP_REG_T10); | |
66498417 | 3627 | set_tok_const (newtok[1], (1 << lgsize) - 1); |
252b5132 RH |
3628 | assemble_tokens ("ldq_u", newtok, 3, 1); |
3629 | ||
3630 | /* emit "extXl $t9, $at, $t9" */ | |
3631 | ||
3632 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3633 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3634 | set_tok_reg (newtok[2], AXP_REG_T9); | |
3635 | assemble_tokens (extXl_op[lgsize], newtok, 3, 1); | |
3636 | ||
3637 | /* emit "extXh $t10, $at, $t10" */ | |
3638 | ||
3639 | set_tok_reg (newtok[0], AXP_REG_T10); | |
3640 | set_tok_reg (newtok[2], AXP_REG_T10); | |
3641 | assemble_tokens (extXh_op[lgsize], newtok, 3, 1); | |
3642 | ||
3643 | /* emit "or $t9, $t10, targ" */ | |
3644 | ||
3645 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3646 | set_tok_reg (newtok[1], AXP_REG_T10); | |
3647 | newtok[2] = tok[0]; | |
3648 | assemble_tokens ("or", newtok, 3, 1); | |
3649 | } | |
3650 | ||
3651 | /* Load an integral value from an unaligned address as a signed value. | |
3652 | Note that quads should get funneled to the unsigned load since we | |
3653 | don't have to do the sign extension. */ | |
3654 | ||
3655 | static void | |
3656 | emit_uldX (tok, ntok, vlgsize) | |
3657 | const expressionS *tok; | |
3658 | int ntok; | |
3659 | const PTR vlgsize; | |
3660 | { | |
3661 | emit_uldXu (tok, ntok, vlgsize); | |
32ff5c2e | 3662 | assemble_tokens (sextX_op[(long) vlgsize], tok, 1, 1); |
252b5132 RH |
3663 | } |
3664 | ||
3665 | /* Implement the ldil macro. */ | |
3666 | ||
3667 | static void | |
3668 | emit_ldil (tok, ntok, unused) | |
3669 | const expressionS *tok; | |
3670 | int ntok; | |
446a06c9 | 3671 | const PTR unused ATTRIBUTE_UNUSED; |
252b5132 RH |
3672 | { |
3673 | expressionS newtok[2]; | |
3674 | ||
43b4c25e | 3675 | #ifdef RELOC_OP_P |
66498417 | 3676 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 3677 | { |
66498417 | 3678 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
3679 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
3680 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3681 | (int) reloc_exp->X_add_number, "ldil"); |
43b4c25e MM |
3682 | ntok--; |
3683 | } | |
3684 | #endif | |
3685 | ||
bc805888 | 3686 | memcpy (newtok, tok, sizeof (newtok)); |
252b5132 RH |
3687 | newtok[1].X_add_number = sign_extend_32 (tok[1].X_add_number); |
3688 | ||
3689 | assemble_tokens ("lda", newtok, ntok, 1); | |
3690 | } | |
3691 | ||
3692 | /* Store a half-word or byte. */ | |
3693 | ||
3694 | static void | |
3695 | emit_stX (tok, ntok, vlgsize) | |
3696 | const expressionS *tok; | |
3697 | int ntok; | |
3698 | const PTR vlgsize; | |
3699 | { | |
32ff5c2e | 3700 | int lgsize = (int) (long) vlgsize; |
252b5132 RH |
3701 | |
3702 | if (alpha_target & AXP_OPCODE_BWX) | |
3703 | emit_loadstore (tok, ntok, stX_op[lgsize]); | |
3704 | else | |
3705 | { | |
3706 | expressionS newtok[3]; | |
3707 | ||
3708 | if (alpha_noat_on) | |
32ff5c2e | 3709 | as_bad (_("macro requires $at register while noat in effect")); |
252b5132 RH |
3710 | |
3711 | /* emit "lda $at, exp" */ | |
3712 | ||
3713 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
3714 | newtok[0].X_add_number = AXP_REG_AT; | |
3715 | assemble_tokens ("lda", newtok, ntok, 1); | |
3716 | ||
3717 | /* emit "ldq_u $t9, 0($at)" */ | |
3718 | ||
3719 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3720 | set_tok_const (newtok[1], 0); | |
3721 | set_tok_preg (newtok[2], AXP_REG_AT); | |
3722 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
3723 | ||
3724 | /* emit "insXl src, $at, $t10" */ | |
3725 | ||
3726 | newtok[0] = tok[0]; | |
3727 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3728 | set_tok_reg (newtok[2], AXP_REG_T10); | |
3729 | assemble_tokens (insXl_op[lgsize], newtok, 3, 1); | |
3730 | ||
3731 | /* emit "mskXl $t9, $at, $t9" */ | |
3732 | ||
3733 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3734 | newtok[2] = newtok[0]; | |
3735 | assemble_tokens (mskXl_op[lgsize], newtok, 3, 1); | |
3736 | ||
3737 | /* emit "or $t9, $t10, $t9" */ | |
3738 | ||
3739 | set_tok_reg (newtok[1], AXP_REG_T10); | |
3740 | assemble_tokens ("or", newtok, 3, 1); | |
3741 | ||
3742 | /* emit "stq_u $t9, 0($at) */ | |
3743 | ||
3744 | set_tok_const (newtok[1], 0); | |
3745 | set_tok_preg (newtok[2], AXP_REG_AT); | |
3746 | assemble_tokens ("stq_u", newtok, 3, 1); | |
3747 | } | |
3748 | } | |
3749 | ||
3750 | /* Store an integer to an unaligned address. */ | |
3751 | ||
3752 | static void | |
3753 | emit_ustX (tok, ntok, vlgsize) | |
3754 | const expressionS *tok; | |
3755 | int ntok; | |
3756 | const PTR vlgsize; | |
3757 | { | |
32ff5c2e | 3758 | int lgsize = (int) (long) vlgsize; |
252b5132 RH |
3759 | expressionS newtok[3]; |
3760 | ||
3761 | /* emit "lda $at, exp" */ | |
3762 | ||
3763 | memcpy (newtok, tok, sizeof (expressionS) * ntok); | |
3764 | newtok[0].X_add_number = AXP_REG_AT; | |
3765 | assemble_tokens ("lda", newtok, ntok, 1); | |
3766 | ||
3767 | /* emit "ldq_u $9, 0($at)" */ | |
3768 | ||
3769 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3770 | set_tok_const (newtok[1], 0); | |
3771 | set_tok_preg (newtok[2], AXP_REG_AT); | |
3772 | assemble_tokens ("ldq_u", newtok, 3, 1); | |
3773 | ||
3774 | /* emit "ldq_u $10, size-1($at)" */ | |
3775 | ||
3776 | set_tok_reg (newtok[0], AXP_REG_T10); | |
66498417 | 3777 | set_tok_const (newtok[1], (1 << lgsize) - 1); |
252b5132 RH |
3778 | assemble_tokens ("ldq_u", newtok, 3, 1); |
3779 | ||
3780 | /* emit "insXl src, $at, $t11" */ | |
3781 | ||
3782 | newtok[0] = tok[0]; | |
3783 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3784 | set_tok_reg (newtok[2], AXP_REG_T11); | |
3785 | assemble_tokens (insXl_op[lgsize], newtok, 3, 1); | |
3786 | ||
3787 | /* emit "insXh src, $at, $t12" */ | |
3788 | ||
3789 | set_tok_reg (newtok[2], AXP_REG_T12); | |
3790 | assemble_tokens (insXh_op[lgsize], newtok, 3, 1); | |
3791 | ||
3792 | /* emit "mskXl $t9, $at, $t9" */ | |
3793 | ||
3794 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3795 | newtok[2] = newtok[0]; | |
3796 | assemble_tokens (mskXl_op[lgsize], newtok, 3, 1); | |
3797 | ||
3798 | /* emit "mskXh $t10, $at, $t10" */ | |
3799 | ||
3800 | set_tok_reg (newtok[0], AXP_REG_T10); | |
3801 | newtok[2] = newtok[0]; | |
3802 | assemble_tokens (mskXh_op[lgsize], newtok, 3, 1); | |
3803 | ||
3804 | /* emit "or $t9, $t11, $t9" */ | |
3805 | ||
3806 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3807 | set_tok_reg (newtok[1], AXP_REG_T11); | |
3808 | newtok[2] = newtok[0]; | |
3809 | assemble_tokens ("or", newtok, 3, 1); | |
3810 | ||
3811 | /* emit "or $t10, $t12, $t10" */ | |
3812 | ||
3813 | set_tok_reg (newtok[0], AXP_REG_T10); | |
3814 | set_tok_reg (newtok[1], AXP_REG_T12); | |
3815 | newtok[2] = newtok[0]; | |
3816 | assemble_tokens ("or", newtok, 3, 1); | |
3817 | ||
3818 | /* emit "stq_u $t9, 0($at)" */ | |
3819 | ||
3820 | set_tok_reg (newtok[0], AXP_REG_T9); | |
3821 | set_tok_const (newtok[1], 0); | |
3822 | set_tok_preg (newtok[2], AXP_REG_AT); | |
3823 | assemble_tokens ("stq_u", newtok, 3, 1); | |
3824 | ||
3825 | /* emit "stq_u $t10, size-1($at)" */ | |
3826 | ||
3827 | set_tok_reg (newtok[0], AXP_REG_T10); | |
66498417 | 3828 | set_tok_const (newtok[1], (1 << lgsize) - 1); |
252b5132 RH |
3829 | assemble_tokens ("stq_u", newtok, 3, 1); |
3830 | } | |
3831 | ||
3832 | /* Sign extend a half-word or byte. The 32-bit sign extend is | |
3833 | implemented as "addl $31, $r, $t" in the opcode table. */ | |
3834 | ||
3835 | static void | |
3836 | emit_sextX (tok, ntok, vlgsize) | |
3837 | const expressionS *tok; | |
3838 | int ntok; | |
3839 | const PTR vlgsize; | |
3840 | { | |
32ff5c2e | 3841 | long lgsize = (long) vlgsize; |
252b5132 RH |
3842 | |
3843 | if (alpha_target & AXP_OPCODE_BWX) | |
3844 | assemble_tokens (sextX_op[lgsize], tok, ntok, 0); | |
3845 | else | |
3846 | { | |
3847 | int bitshift = 64 - 8 * (1 << lgsize); | |
3848 | expressionS newtok[3]; | |
3849 | ||
43b4c25e | 3850 | #ifdef RELOC_OP_P |
66498417 | 3851 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 3852 | { |
66498417 | 3853 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
3854 | const struct alpha_reloc_op_tag *r |
3855 | = ALPHA_RELOC_TABLE (reloc_exp->X_op); | |
3856 | ||
3857 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3858 | (int) reloc_exp->X_add_number, "setxt"); |
43b4c25e MM |
3859 | ntok--; |
3860 | } | |
3861 | #endif | |
3862 | ||
252b5132 RH |
3863 | /* emit "sll src,bits,dst" */ |
3864 | ||
3865 | newtok[0] = tok[0]; | |
3866 | set_tok_const (newtok[1], bitshift); | |
3867 | newtok[2] = tok[ntok - 1]; | |
3868 | assemble_tokens ("sll", newtok, 3, 1); | |
3869 | ||
3870 | /* emit "sra dst,bits,dst" */ | |
3871 | ||
3872 | newtok[0] = newtok[2]; | |
3873 | assemble_tokens ("sra", newtok, 3, 1); | |
3874 | } | |
3875 | } | |
3876 | ||
3877 | /* Implement the division and modulus macros. */ | |
3878 | ||
3879 | #ifdef OBJ_EVAX | |
3880 | ||
3881 | /* Make register usage like in normal procedure call. | |
3882 | Don't clobber PV and RA. */ | |
3883 | ||
3884 | static void | |
3885 | emit_division (tok, ntok, symname) | |
3886 | const expressionS *tok; | |
3887 | int ntok; | |
3888 | const PTR symname; | |
3889 | { | |
3890 | /* DIVISION and MODULUS. Yech. | |
3891 | * | |
3892 | * Convert | |
3893 | * OP x,y,result | |
3894 | * to | |
3895 | * mov x,R16 # if x != R16 | |
3896 | * mov y,R17 # if y != R17 | |
3897 | * lda AT,__OP | |
3898 | * jsr AT,(AT),0 | |
3899 | * mov R0,result | |
3900 | * | |
3901 | * with appropriate optimizations if R0,R16,R17 are the registers | |
3902 | * specified by the compiler. | |
3903 | */ | |
3904 | ||
3905 | int xr, yr, rr; | |
3906 | symbolS *sym; | |
3907 | expressionS newtok[3]; | |
3908 | ||
43b4c25e | 3909 | #ifdef RELOC_OP_P |
66498417 | 3910 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 3911 | { |
66498417 | 3912 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
3913 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
3914 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 3915 | (int) reloc_exp->X_add_number, (char char *) symname); |
43b4c25e MM |
3916 | ntok--; |
3917 | } | |
3918 | #endif | |
3919 | ||
252b5132 RH |
3920 | xr = regno (tok[0].X_add_number); |
3921 | yr = regno (tok[1].X_add_number); | |
3922 | ||
3923 | if (ntok < 3) | |
3924 | rr = xr; | |
3925 | else | |
3926 | rr = regno (tok[2].X_add_number); | |
3927 | ||
3928 | /* Move the operands into the right place */ | |
3929 | if (yr == AXP_REG_R16 && xr == AXP_REG_R17) | |
3930 | { | |
3931 | /* They are in exactly the wrong order -- swap through AT */ | |
3932 | ||
3933 | if (alpha_noat_on) | |
3934 | as_bad (_("macro requires $at register while noat in effect")); | |
3935 | ||
3936 | set_tok_reg (newtok[0], AXP_REG_R16); | |
3937 | set_tok_reg (newtok[1], AXP_REG_AT); | |
3938 | assemble_tokens ("mov", newtok, 2, 1); | |
3939 | ||
3940 | set_tok_reg (newtok[0], AXP_REG_R17); | |
3941 | set_tok_reg (newtok[1], AXP_REG_R16); | |
3942 | assemble_tokens ("mov", newtok, 2, 1); | |
3943 | ||
3944 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3945 | set_tok_reg (newtok[1], AXP_REG_R17); | |
3946 | assemble_tokens ("mov", newtok, 2, 1); | |
3947 | } | |
3948 | else | |
3949 | { | |
3950 | if (yr == AXP_REG_R16) | |
3951 | { | |
3952 | set_tok_reg (newtok[0], AXP_REG_R16); | |
3953 | set_tok_reg (newtok[1], AXP_REG_R17); | |
3954 | assemble_tokens ("mov", newtok, 2, 1); | |
3955 | } | |
3956 | ||
3957 | if (xr != AXP_REG_R16) | |
3958 | { | |
3959 | set_tok_reg (newtok[0], xr); | |
3960 | set_tok_reg (newtok[1], AXP_REG_R16); | |
1aad8cf8 | 3961 | assemble_tokens ("mov", newtok, 2, 1); |
252b5132 RH |
3962 | } |
3963 | ||
3964 | if (yr != AXP_REG_R16 && yr != AXP_REG_R17) | |
3965 | { | |
3966 | set_tok_reg (newtok[0], yr); | |
3967 | set_tok_reg (newtok[1], AXP_REG_R17); | |
3968 | assemble_tokens ("mov", newtok, 2, 1); | |
3969 | } | |
3970 | } | |
3971 | ||
32ff5c2e | 3972 | sym = symbol_find_or_make ((const char *) symname); |
252b5132 RH |
3973 | |
3974 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3975 | set_tok_sym (newtok[1], sym, 0); | |
3976 | assemble_tokens ("lda", newtok, 2, 1); | |
3977 | ||
3978 | /* Call the division routine */ | |
3979 | set_tok_reg (newtok[0], AXP_REG_AT); | |
3980 | set_tok_cpreg (newtok[1], AXP_REG_AT); | |
3981 | set_tok_const (newtok[2], 0); | |
3982 | assemble_tokens ("jsr", newtok, 3, 1); | |
3983 | ||
3984 | /* Move the result to the right place */ | |
3985 | if (rr != AXP_REG_R0) | |
3986 | { | |
3987 | set_tok_reg (newtok[0], AXP_REG_R0); | |
3988 | set_tok_reg (newtok[1], rr); | |
3989 | assemble_tokens ("mov", newtok, 2, 1); | |
3990 | } | |
3991 | } | |
3992 | ||
3993 | #else /* !OBJ_EVAX */ | |
3994 | ||
3995 | static void | |
3996 | emit_division (tok, ntok, symname) | |
3997 | const expressionS *tok; | |
3998 | int ntok; | |
3999 | const PTR symname; | |
4000 | { | |
4001 | /* DIVISION and MODULUS. Yech. | |
4002 | * Convert | |
4003 | * OP x,y,result | |
4004 | * to | |
4005 | * lda pv,__OP | |
4006 | * mov x,t10 | |
4007 | * mov y,t11 | |
4008 | * jsr t9,(pv),__OP | |
4009 | * mov t12,result | |
4010 | * | |
4011 | * with appropriate optimizations if t10,t11,t12 are the registers | |
4012 | * specified by the compiler. | |
4013 | */ | |
4014 | ||
4015 | int xr, yr, rr; | |
4016 | symbolS *sym; | |
4017 | expressionS newtok[3]; | |
4018 | ||
43b4c25e | 4019 | #ifdef RELOC_OP_P |
66498417 | 4020 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 4021 | { |
66498417 | 4022 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
4023 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
4024 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 4025 | (int) reloc_exp->X_add_number, (const char *) symname); |
43b4c25e MM |
4026 | ntok--; |
4027 | } | |
4028 | #endif | |
4029 | ||
252b5132 RH |
4030 | xr = regno (tok[0].X_add_number); |
4031 | yr = regno (tok[1].X_add_number); | |
4032 | ||
4033 | if (ntok < 3) | |
4034 | rr = xr; | |
4035 | else | |
4036 | rr = regno (tok[2].X_add_number); | |
4037 | ||
32ff5c2e | 4038 | sym = symbol_find_or_make ((const char *) symname); |
252b5132 RH |
4039 | |
4040 | /* Move the operands into the right place */ | |
4041 | if (yr == AXP_REG_T10 && xr == AXP_REG_T11) | |
4042 | { | |
4043 | /* They are in exactly the wrong order -- swap through AT */ | |
4044 | ||
4045 | if (alpha_noat_on) | |
4046 | as_bad (_("macro requires $at register while noat in effect")); | |
4047 | ||
4048 | set_tok_reg (newtok[0], AXP_REG_T10); | |
4049 | set_tok_reg (newtok[1], AXP_REG_AT); | |
4050 | assemble_tokens ("mov", newtok, 2, 1); | |
4051 | ||
4052 | set_tok_reg (newtok[0], AXP_REG_T11); | |
4053 | set_tok_reg (newtok[1], AXP_REG_T10); | |
4054 | assemble_tokens ("mov", newtok, 2, 1); | |
4055 | ||
4056 | set_tok_reg (newtok[0], AXP_REG_AT); | |
4057 | set_tok_reg (newtok[1], AXP_REG_T11); | |
4058 | assemble_tokens ("mov", newtok, 2, 1); | |
4059 | } | |
4060 | else | |
4061 | { | |
4062 | if (yr == AXP_REG_T10) | |
4063 | { | |
4064 | set_tok_reg (newtok[0], AXP_REG_T10); | |
4065 | set_tok_reg (newtok[1], AXP_REG_T11); | |
4066 | assemble_tokens ("mov", newtok, 2, 1); | |
4067 | } | |
4068 | ||
4069 | if (xr != AXP_REG_T10) | |
4070 | { | |
4071 | set_tok_reg (newtok[0], xr); | |
4072 | set_tok_reg (newtok[1], AXP_REG_T10); | |
1aad8cf8 | 4073 | assemble_tokens ("mov", newtok, 2, 1); |
252b5132 RH |
4074 | } |
4075 | ||
4076 | if (yr != AXP_REG_T10 && yr != AXP_REG_T11) | |
4077 | { | |
4078 | set_tok_reg (newtok[0], yr); | |
4079 | set_tok_reg (newtok[1], AXP_REG_T11); | |
4080 | assemble_tokens ("mov", newtok, 2, 1); | |
4081 | } | |
4082 | } | |
4083 | ||
4084 | /* Call the division routine */ | |
4085 | set_tok_reg (newtok[0], AXP_REG_T9); | |
4086 | set_tok_sym (newtok[1], sym, 0); | |
4087 | assemble_tokens ("jsr", newtok, 2, 1); | |
4088 | ||
4089 | /* Reload the GP register */ | |
4090 | #ifdef OBJ_AOUT | |
4091 | FIXME | |
4092 | #endif | |
4093 | #if defined(OBJ_ECOFF) || defined(OBJ_ELF) | |
4094 | set_tok_reg (newtok[0], alpha_gp_register); | |
4095 | set_tok_const (newtok[1], 0); | |
4096 | set_tok_preg (newtok[2], AXP_REG_T9); | |
4097 | assemble_tokens ("ldgp", newtok, 3, 1); | |
4098 | #endif | |
4099 | ||
4100 | /* Move the result to the right place */ | |
4101 | if (rr != AXP_REG_T12) | |
4102 | { | |
4103 | set_tok_reg (newtok[0], AXP_REG_T12); | |
4104 | set_tok_reg (newtok[1], rr); | |
4105 | assemble_tokens ("mov", newtok, 2, 1); | |
4106 | } | |
4107 | } | |
4108 | ||
4109 | #endif /* !OBJ_EVAX */ | |
4110 | ||
4111 | /* The jsr and jmp macros differ from their instruction counterparts | |
4112 | in that they can load the target address and default most | |
4113 | everything. */ | |
4114 | ||
4115 | static void | |
4116 | emit_jsrjmp (tok, ntok, vopname) | |
4117 | const expressionS *tok; | |
4118 | int ntok; | |
4119 | const PTR vopname; | |
4120 | { | |
4121 | const char *opname = (const char *) vopname; | |
4122 | struct alpha_insn insn; | |
4123 | expressionS newtok[3]; | |
4124 | int r, tokidx = 0, lituse = 0; | |
4125 | ||
43b4c25e | 4126 | #ifdef RELOC_OP_P |
66498417 | 4127 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 4128 | { |
66498417 | 4129 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
4130 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
4131 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 4132 | (int) reloc_exp->X_add_number, opname); |
43b4c25e MM |
4133 | ntok--; |
4134 | } | |
4135 | #endif | |
4136 | ||
252b5132 RH |
4137 | if (tokidx < ntok && tok[tokidx].X_op == O_register) |
4138 | r = regno (tok[tokidx++].X_add_number); | |
4139 | else | |
4140 | r = strcmp (opname, "jmp") == 0 ? AXP_REG_ZERO : AXP_REG_RA; | |
4141 | ||
4142 | set_tok_reg (newtok[0], r); | |
4143 | ||
4144 | if (tokidx < ntok && | |
4145 | (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister)) | |
4146 | r = regno (tok[tokidx++].X_add_number); | |
4147 | #ifdef OBJ_EVAX | |
4148 | /* keep register if jsr $n.<sym> */ | |
4149 | #else | |
4150 | else | |
4151 | { | |
4152 | int basereg = alpha_gp_register; | |
43b4c25e | 4153 | lituse = load_expression (r = AXP_REG_PV, &tok[tokidx], &basereg, NULL, |
32ff5c2e | 4154 | (const expressionS *) 0); |
252b5132 RH |
4155 | } |
4156 | #endif | |
4157 | ||
4158 | set_tok_cpreg (newtok[1], r); | |
4159 | ||
4160 | #ifdef OBJ_EVAX | |
4161 | /* FIXME: Add hint relocs to BFD for evax. */ | |
4162 | #else | |
4163 | if (tokidx < ntok) | |
4164 | newtok[2] = tok[tokidx]; | |
4165 | else | |
4166 | #endif | |
4167 | set_tok_const (newtok[2], 0); | |
4168 | ||
4169 | assemble_tokens_to_insn (opname, newtok, 3, &insn); | |
4170 | ||
4171 | /* add the LITUSE fixup */ | |
4172 | if (lituse) | |
4173 | { | |
4174 | assert (insn.nfixups < MAX_INSN_FIXUPS); | |
4175 | if (insn.nfixups > 0) | |
4176 | { | |
4177 | memmove (&insn.fixups[1], &insn.fixups[0], | |
bc805888 | 4178 | sizeof (struct alpha_fixup) * insn.nfixups); |
252b5132 RH |
4179 | } |
4180 | insn.nfixups++; | |
4181 | insn.fixups[0].reloc = BFD_RELOC_ALPHA_LITUSE; | |
9de8d8f1 RH |
4182 | insn.fixups[0].exp.X_op = O_symbol; |
4183 | insn.fixups[0].exp.X_add_symbol = section_symbol (now_seg); | |
43b4c25e | 4184 | insn.fixups[0].exp.X_add_number = LITUSE_JSR; |
252b5132 RH |
4185 | } |
4186 | ||
4187 | emit_insn (&insn); | |
4188 | } | |
4189 | ||
4190 | /* The ret and jcr instructions differ from their instruction | |
4191 | counterparts in that everything can be defaulted. */ | |
4192 | ||
4193 | static void | |
4194 | emit_retjcr (tok, ntok, vopname) | |
4195 | const expressionS *tok; | |
4196 | int ntok; | |
4197 | const PTR vopname; | |
4198 | { | |
32ff5c2e | 4199 | const char *opname = (const char *) vopname; |
252b5132 RH |
4200 | expressionS newtok[3]; |
4201 | int r, tokidx = 0; | |
4202 | ||
43b4c25e | 4203 | #ifdef RELOC_OP_P |
66498417 | 4204 | if (ntok && USER_RELOC_P (tok[ntok - 1].X_op)) |
43b4c25e | 4205 | { |
66498417 | 4206 | const expressionS *reloc_exp = &tok[ntok - 1]; |
43b4c25e MM |
4207 | const struct alpha_reloc_op_tag *r = ALPHA_RELOC_TABLE (reloc_exp->X_op); |
4208 | as_bad (_("Cannot use !%s!%d with %s"), r->name, | |
32ff5c2e | 4209 | (int) reloc_exp->X_add_number, opname); |
43b4c25e MM |
4210 | ntok--; |
4211 | } | |
4212 | #endif | |
4213 | ||
252b5132 RH |
4214 | if (tokidx < ntok && tok[tokidx].X_op == O_register) |
4215 | r = regno (tok[tokidx++].X_add_number); | |
4216 | else | |
4217 | r = AXP_REG_ZERO; | |
4218 | ||
4219 | set_tok_reg (newtok[0], r); | |
4220 | ||
4221 | if (tokidx < ntok && | |
4222 | (tok[tokidx].X_op == O_pregister || tok[tokidx].X_op == O_cpregister)) | |
4223 | r = regno (tok[tokidx++].X_add_number); | |
4224 | else | |
4225 | r = AXP_REG_RA; | |
4226 | ||
4227 | set_tok_cpreg (newtok[1], r); | |
4228 | ||
4229 | if (tokidx < ntok) | |
4230 | newtok[2] = tok[tokidx]; | |
4231 | else | |
32ff5c2e | 4232 | set_tok_const (newtok[2], strcmp (opname, "ret") == 0); |
252b5132 RH |
4233 | |
4234 | assemble_tokens (opname, newtok, 3, 0); | |
4235 | } | |
4236 | \f | |
4237 | /* Assembler directives */ | |
4238 | ||
4239 | /* Handle the .text pseudo-op. This is like the usual one, but it | |
4240 | clears alpha_insn_label and restores auto alignment. */ | |
4241 | ||
4242 | static void | |
4243 | s_alpha_text (i) | |
4244 | int i; | |
4245 | ||
4246 | { | |
4247 | s_text (i); | |
4248 | alpha_insn_label = NULL; | |
4249 | alpha_auto_align_on = 1; | |
4250 | alpha_current_align = 0; | |
4251 | } | |
4252 | ||
4253 | /* Handle the .data pseudo-op. This is like the usual one, but it | |
4254 | clears alpha_insn_label and restores auto alignment. */ | |
4255 | ||
4256 | static void | |
4257 | s_alpha_data (i) | |
4258 | int i; | |
4259 | { | |
4260 | s_data (i); | |
4261 | alpha_insn_label = NULL; | |
4262 | alpha_auto_align_on = 1; | |
4263 | alpha_current_align = 0; | |
4264 | } | |
4265 | ||
4266 | #if defined (OBJ_ECOFF) || defined (OBJ_EVAX) | |
4267 | ||
4268 | /* Handle the OSF/1 and openVMS .comm pseudo quirks. | |
4269 | openVMS constructs a section for every common symbol. */ | |
4270 | ||
4271 | static void | |
4272 | s_alpha_comm (ignore) | |
4273 | int ignore; | |
4274 | { | |
4275 | register char *name; | |
4276 | register char c; | |
4277 | register char *p; | |
4278 | offsetT temp; | |
4279 | register symbolS *symbolP; | |
4280 | ||
4281 | #ifdef OBJ_EVAX | |
4282 | segT current_section = now_seg; | |
4283 | int current_subsec = now_subseg; | |
4284 | segT new_seg; | |
4285 | #endif | |
4286 | ||
4287 | name = input_line_pointer; | |
4288 | c = get_symbol_end (); | |
4289 | ||
4290 | /* just after name is now '\0' */ | |
4291 | p = input_line_pointer; | |
4292 | *p = c; | |
4293 | ||
4294 | SKIP_WHITESPACE (); | |
4295 | ||
4296 | /* Alpha OSF/1 compiler doesn't provide the comma, gcc does. */ | |
4297 | if (*input_line_pointer == ',') | |
4298 | { | |
4299 | input_line_pointer++; | |
4300 | SKIP_WHITESPACE (); | |
4301 | } | |
4302 | if ((temp = get_absolute_expression ()) < 0) | |
4303 | { | |
4304 | as_warn (_(".COMMon length (%ld.) <0! Ignored."), (long) temp); | |
4305 | ignore_rest_of_line (); | |
4306 | return; | |
4307 | } | |
4308 | ||
4309 | *p = 0; | |
4310 | symbolP = symbol_find_or_make (name); | |
4311 | ||
4312 | #ifdef OBJ_EVAX | |
4313 | /* Make a section for the common symbol. */ | |
4314 | new_seg = subseg_new (xstrdup (name), 0); | |
4315 | #endif | |
4316 | ||
4317 | *p = c; | |
4318 | ||
4319 | #ifdef OBJ_EVAX | |
4320 | /* alignment might follow */ | |
4321 | if (*input_line_pointer == ',') | |
4322 | { | |
4323 | offsetT align; | |
4324 | ||
1dab94dd | 4325 | input_line_pointer++; |
252b5132 RH |
4326 | align = get_absolute_expression (); |
4327 | bfd_set_section_alignment (stdoutput, new_seg, align); | |
4328 | } | |
4329 | #endif | |
4330 | ||
4331 | if (S_IS_DEFINED (symbolP) && ! S_IS_COMMON (symbolP)) | |
4332 | { | |
4333 | as_bad (_("Ignoring attempt to re-define symbol")); | |
4334 | ignore_rest_of_line (); | |
4335 | return; | |
4336 | } | |
4337 | ||
4338 | #ifdef OBJ_EVAX | |
4339 | if (bfd_section_size (stdoutput, new_seg) > 0) | |
1dab94dd | 4340 | { |
252b5132 RH |
4341 | if (bfd_section_size (stdoutput, new_seg) != temp) |
4342 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
4343 | S_GET_NAME (symbolP), | |
4344 | (long) bfd_section_size (stdoutput, new_seg), | |
4345 | (long) temp); | |
4346 | } | |
4347 | #else | |
4348 | if (S_GET_VALUE (symbolP)) | |
4349 | { | |
4350 | if (S_GET_VALUE (symbolP) != (valueT) temp) | |
4351 | as_bad (_("Length of .comm \"%s\" is already %ld. Not changed to %ld."), | |
4352 | S_GET_NAME (symbolP), | |
4353 | (long) S_GET_VALUE (symbolP), | |
4354 | (long) temp); | |
4355 | } | |
4356 | #endif | |
4357 | else | |
4358 | { | |
1dab94dd | 4359 | #ifdef OBJ_EVAX |
252b5132 RH |
4360 | subseg_set (new_seg, 0); |
4361 | p = frag_more (temp); | |
4362 | new_seg->flags |= SEC_IS_COMMON; | |
4363 | if (! S_IS_DEFINED (symbolP)) | |
9de8d8f1 | 4364 | S_SET_SEGMENT (symbolP, new_seg); |
252b5132 RH |
4365 | #else |
4366 | S_SET_VALUE (symbolP, (valueT) temp); | |
4367 | #endif | |
4368 | S_SET_EXTERNAL (symbolP); | |
4369 | } | |
4370 | ||
4371 | #ifdef OBJ_EVAX | |
4372 | subseg_set (current_section, current_subsec); | |
4373 | #endif | |
4374 | ||
7dcc9865 | 4375 | know (symbol_get_frag (symbolP) == &zero_address_frag); |
252b5132 RH |
4376 | |
4377 | demand_empty_rest_of_line (); | |
4378 | } | |
4379 | ||
4380 | #endif /* ! OBJ_ELF */ | |
4381 | ||
4382 | #ifdef OBJ_ECOFF | |
4383 | ||
4384 | /* Handle the .rdata pseudo-op. This is like the usual one, but it | |
4385 | clears alpha_insn_label and restores auto alignment. */ | |
4386 | ||
4387 | static void | |
4388 | s_alpha_rdata (ignore) | |
4389 | int ignore; | |
4390 | { | |
4391 | int temp; | |
4392 | ||
4393 | temp = get_absolute_expression (); | |
4394 | subseg_new (".rdata", 0); | |
4395 | demand_empty_rest_of_line (); | |
4396 | alpha_insn_label = NULL; | |
4397 | alpha_auto_align_on = 1; | |
4398 | alpha_current_align = 0; | |
4399 | } | |
4400 | ||
4401 | #endif | |
4402 | ||
4403 | #ifdef OBJ_ECOFF | |
4404 | ||
4405 | /* Handle the .sdata pseudo-op. This is like the usual one, but it | |
4406 | clears alpha_insn_label and restores auto alignment. */ | |
4407 | ||
4408 | static void | |
4409 | s_alpha_sdata (ignore) | |
4410 | int ignore; | |
4411 | { | |
4412 | int temp; | |
4413 | ||
4414 | temp = get_absolute_expression (); | |
4415 | subseg_new (".sdata", 0); | |
4416 | demand_empty_rest_of_line (); | |
4417 | alpha_insn_label = NULL; | |
4418 | alpha_auto_align_on = 1; | |
4419 | alpha_current_align = 0; | |
4420 | } | |
4421 | #endif | |
4422 | ||
4423 | #ifdef OBJ_ELF | |
4424 | ||
4425 | /* Handle the .section pseudo-op. This is like the usual one, but it | |
4426 | clears alpha_insn_label and restores auto alignment. */ | |
4427 | ||
4428 | static void | |
4429 | s_alpha_section (ignore) | |
4430 | int ignore; | |
4431 | { | |
4432 | obj_elf_section (ignore); | |
4433 | ||
4434 | alpha_insn_label = NULL; | |
4435 | alpha_auto_align_on = 1; | |
4436 | alpha_current_align = 0; | |
4437 | } | |
4438 | ||
4439 | static void | |
4440 | s_alpha_ent (dummy) | |
446a06c9 | 4441 | int dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
4442 | { |
4443 | if (ECOFF_DEBUGGING) | |
4444 | ecoff_directive_ent (0); | |
4445 | else | |
4446 | { | |
4447 | char *name, name_end; | |
4448 | name = input_line_pointer; | |
4449 | name_end = get_symbol_end (); | |
4450 | ||
4451 | if (! is_name_beginner (*name)) | |
4452 | { | |
4453 | as_warn (_(".ent directive has no name")); | |
4454 | *input_line_pointer = name_end; | |
4455 | } | |
4456 | else | |
4457 | { | |
4458 | symbolS *sym; | |
4459 | ||
4460 | if (alpha_cur_ent_sym) | |
4461 | as_warn (_("nested .ent directives")); | |
4462 | ||
4463 | sym = symbol_find_or_make (name); | |
49309057 | 4464 | symbol_get_bfdsym (sym)->flags |= BSF_FUNCTION; |
252b5132 RH |
4465 | alpha_cur_ent_sym = sym; |
4466 | ||
4467 | /* The .ent directive is sometimes followed by a number. Not sure | |
4468 | what it really means, but ignore it. */ | |
4469 | *input_line_pointer = name_end; | |
4470 | SKIP_WHITESPACE (); | |
4471 | if (*input_line_pointer == ',') | |
4472 | { | |
4473 | input_line_pointer++; | |
4474 | SKIP_WHITESPACE (); | |
4475 | } | |
4476 | if (isdigit (*input_line_pointer) || *input_line_pointer == '-') | |
4477 | (void) get_absolute_expression (); | |
4478 | } | |
4479 | demand_empty_rest_of_line (); | |
4480 | } | |
4481 | } | |
4482 | ||
4483 | static void | |
4484 | s_alpha_end (dummy) | |
446a06c9 | 4485 | int dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
4486 | { |
4487 | if (ECOFF_DEBUGGING) | |
4488 | ecoff_directive_end (0); | |
4489 | else | |
4490 | { | |
4491 | char *name, name_end; | |
4492 | name = input_line_pointer; | |
4493 | name_end = get_symbol_end (); | |
4494 | ||
4495 | if (! is_name_beginner (*name)) | |
4496 | { | |
4497 | as_warn (_(".end directive has no name")); | |
4498 | *input_line_pointer = name_end; | |
4499 | } | |
4500 | else | |
4501 | { | |
4502 | symbolS *sym; | |
4503 | ||
4504 | sym = symbol_find (name); | |
4505 | if (sym != alpha_cur_ent_sym) | |
4506 | as_warn (_(".end directive names different symbol than .ent")); | |
4507 | ||
4508 | /* Create an expression to calculate the size of the function. */ | |
4509 | if (sym) | |
4510 | { | |
49309057 ILT |
4511 | symbol_get_obj (sym)->size = |
4512 | (expressionS *) xmalloc (sizeof (expressionS)); | |
4513 | symbol_get_obj (sym)->size->X_op = O_subtract; | |
4514 | symbol_get_obj (sym)->size->X_add_symbol | |
66498417 | 4515 | = symbol_new ("L0\001", now_seg, frag_now_fix (), frag_now); |
49309057 ILT |
4516 | symbol_get_obj (sym)->size->X_op_symbol = sym; |
4517 | symbol_get_obj (sym)->size->X_add_number = 0; | |
252b5132 RH |
4518 | } |
4519 | ||
4520 | alpha_cur_ent_sym = NULL; | |
4521 | ||
4522 | *input_line_pointer = name_end; | |
4523 | } | |
4524 | demand_empty_rest_of_line (); | |
4525 | } | |
4526 | } | |
4527 | ||
4528 | static void | |
4529 | s_alpha_mask (fp) | |
4530 | int fp; | |
4531 | { | |
4532 | if (ECOFF_DEBUGGING) | |
4533 | { | |
4534 | if (fp) | |
1aad8cf8 | 4535 | ecoff_directive_fmask (0); |
252b5132 | 4536 | else |
1aad8cf8 | 4537 | ecoff_directive_mask (0); |
252b5132 RH |
4538 | } |
4539 | else | |
4540 | discard_rest_of_line (); | |
4541 | } | |
4542 | ||
4543 | static void | |
4544 | s_alpha_frame (dummy) | |
446a06c9 | 4545 | int dummy ATTRIBUTE_UNUSED; |
252b5132 RH |
4546 | { |
4547 | if (ECOFF_DEBUGGING) | |
4548 | ecoff_directive_frame (0); | |
4549 | else | |
4550 | discard_rest_of_line (); | |
4551 | } | |
4552 | ||
4553 | static void | |
4554 | s_alpha_prologue (ignore) | |
446a06c9 | 4555 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
4556 | { |
4557 | symbolS *sym; | |
4558 | int arg; | |
4559 | ||
4560 | arg = get_absolute_expression (); | |
4561 | demand_empty_rest_of_line (); | |
4562 | ||
4563 | if (ECOFF_DEBUGGING) | |
4564 | sym = ecoff_get_cur_proc_sym (); | |
4565 | else | |
4566 | sym = alpha_cur_ent_sym; | |
4567 | know (sym != NULL); | |
4568 | ||
4569 | switch (arg) | |
4570 | { | |
1aad8cf8 KH |
4571 | case 0: /* No PV required. */ |
4572 | S_SET_OTHER (sym, STO_ALPHA_NOPV | |
4573 | | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD)); | |
4574 | break; | |
4575 | case 1: /* Std GP load. */ | |
4576 | S_SET_OTHER (sym, STO_ALPHA_STD_GPLOAD | |
4577 | | (S_GET_OTHER (sym) & ~STO_ALPHA_STD_GPLOAD)); | |
4578 | break; | |
4579 | case 2: /* Non-std use of PV. */ | |
4580 | break; | |
4581 | ||
4582 | default: | |
4583 | as_bad (_("Invalid argument %d to .prologue."), arg); | |
4584 | break; | |
1dab94dd | 4585 | } |
252b5132 RH |
4586 | } |
4587 | ||
66498417 | 4588 | static char *first_file_directive; |
a8316fe2 | 4589 | |
4dc7ead9 RH |
4590 | static void |
4591 | s_alpha_file (ignore) | |
4592 | int ignore ATTRIBUTE_UNUSED; | |
4593 | { | |
a8316fe2 RH |
4594 | /* Save the first .file directive we see, so that we can change our |
4595 | minds about whether ecoff debugging should or shouldn't be enabled. */ | |
4596 | if (alpha_flag_mdebug < 0 && ! first_file_directive) | |
4597 | { | |
4598 | char *start = input_line_pointer; | |
4599 | size_t len; | |
4600 | ||
4601 | discard_rest_of_line (); | |
4602 | ||
4603 | len = input_line_pointer - start; | |
4604 | first_file_directive = xmalloc (len + 1); | |
4605 | memcpy (first_file_directive, start, len); | |
4606 | first_file_directive[len] = '\0'; | |
4607 | ||
4608 | input_line_pointer = start; | |
4609 | } | |
4610 | ||
4dc7ead9 RH |
4611 | if (ECOFF_DEBUGGING) |
4612 | ecoff_directive_file (0); | |
4613 | else | |
4614 | dwarf2_directive_file (0); | |
4615 | } | |
4616 | ||
4617 | static void | |
4618 | s_alpha_loc (ignore) | |
4619 | int ignore ATTRIBUTE_UNUSED; | |
4620 | { | |
4621 | if (ECOFF_DEBUGGING) | |
4622 | ecoff_directive_loc (0); | |
4623 | else | |
4624 | dwarf2_directive_loc (0); | |
4625 | } | |
4626 | ||
a8316fe2 RH |
4627 | static void |
4628 | s_alpha_stab (n) | |
4629 | int n; | |
4630 | { | |
4631 | /* If we've been undecided about mdebug, make up our minds in favour. */ | |
4632 | if (alpha_flag_mdebug < 0) | |
4633 | { | |
32ff5c2e | 4634 | segT sec = subseg_new (".mdebug", 0); |
66498417 | 4635 | bfd_set_section_flags (stdoutput, sec, SEC_HAS_CONTENTS | SEC_READONLY); |
32ff5c2e | 4636 | bfd_set_section_alignment (stdoutput, sec, 3); |
a8316fe2 RH |
4637 | |
4638 | ecoff_read_begin_hook (); | |
4639 | ||
4640 | if (first_file_directive) | |
4641 | { | |
4642 | char *save_ilp = input_line_pointer; | |
66498417 | 4643 | input_line_pointer = first_file_directive; |
a8316fe2 RH |
4644 | ecoff_directive_file (0); |
4645 | input_line_pointer = save_ilp; | |
4646 | free (first_file_directive); | |
4647 | } | |
4648 | ||
4649 | alpha_flag_mdebug = 1; | |
4650 | } | |
4651 | s_stab (n); | |
4652 | } | |
4653 | ||
252b5132 RH |
4654 | static void |
4655 | s_alpha_coff_wrapper (which) | |
4656 | int which; | |
4657 | { | |
4658 | static void (* const fns[]) PARAMS ((int)) = { | |
4659 | ecoff_directive_begin, | |
4660 | ecoff_directive_bend, | |
4661 | ecoff_directive_def, | |
4662 | ecoff_directive_dim, | |
4663 | ecoff_directive_endef, | |
252b5132 RH |
4664 | ecoff_directive_scl, |
4665 | ecoff_directive_tag, | |
4666 | ecoff_directive_val, | |
252b5132 RH |
4667 | }; |
4668 | ||
bc805888 | 4669 | assert (which >= 0 && which < (int) (sizeof (fns)/sizeof (*fns))); |
252b5132 RH |
4670 | |
4671 | if (ECOFF_DEBUGGING) | |
bc805888 | 4672 | (*fns[which]) (0); |
252b5132 RH |
4673 | else |
4674 | { | |
4675 | as_bad (_("ECOFF debugging is disabled.")); | |
4676 | ignore_rest_of_line (); | |
4677 | } | |
4678 | } | |
4679 | #endif /* OBJ_ELF */ | |
4680 | ||
4681 | #ifdef OBJ_EVAX | |
1dab94dd | 4682 | |
252b5132 | 4683 | /* Handle the section specific pseudo-op. */ |
1dab94dd | 4684 | |
252b5132 RH |
4685 | static void |
4686 | s_alpha_section (secid) | |
4687 | int secid; | |
4688 | { | |
4689 | int temp; | |
4690 | #define EVAX_SECTION_COUNT 5 | |
66498417 | 4691 | static char *section_name[EVAX_SECTION_COUNT + 1] = |
252b5132 RH |
4692 | { "NULL", ".rdata", ".comm", ".link", ".ctors", ".dtors" }; |
4693 | ||
4694 | if ((secid <= 0) || (secid > EVAX_SECTION_COUNT)) | |
4695 | { | |
4696 | as_fatal (_("Unknown section directive")); | |
4697 | demand_empty_rest_of_line (); | |
4698 | return; | |
4699 | } | |
4700 | temp = get_absolute_expression (); | |
4701 | subseg_new (section_name[secid], 0); | |
4702 | demand_empty_rest_of_line (); | |
4703 | alpha_insn_label = NULL; | |
4704 | alpha_auto_align_on = 1; | |
4705 | alpha_current_align = 0; | |
4706 | } | |
4707 | ||
252b5132 RH |
4708 | /* Parse .ent directives. */ |
4709 | ||
4710 | static void | |
4711 | s_alpha_ent (ignore) | |
4712 | int ignore; | |
4713 | { | |
4714 | symbolS *symbol; | |
4715 | expressionS symexpr; | |
4716 | ||
4717 | alpha_evax_proc.pdsckind = 0; | |
4718 | alpha_evax_proc.framereg = -1; | |
4719 | alpha_evax_proc.framesize = 0; | |
4720 | alpha_evax_proc.rsa_offset = 0; | |
4721 | alpha_evax_proc.ra_save = AXP_REG_RA; | |
4722 | alpha_evax_proc.fp_save = -1; | |
4723 | alpha_evax_proc.imask = 0; | |
4724 | alpha_evax_proc.fmask = 0; | |
4725 | alpha_evax_proc.prologue = 0; | |
4726 | alpha_evax_proc.type = 0; | |
4727 | ||
4728 | expression (&symexpr); | |
4729 | ||
4730 | if (symexpr.X_op != O_symbol) | |
4731 | { | |
4732 | as_fatal (_(".ent directive has no symbol")); | |
4733 | demand_empty_rest_of_line (); | |
4734 | return; | |
4735 | } | |
4736 | ||
4737 | symbol = make_expr_symbol (&symexpr); | |
9de8d8f1 | 4738 | symbol_get_bfdsym (symbol)->flags |= BSF_FUNCTION; |
252b5132 RH |
4739 | alpha_evax_proc.symbol = symbol; |
4740 | ||
4741 | demand_empty_rest_of_line (); | |
4742 | return; | |
4743 | } | |
4744 | ||
252b5132 RH |
4745 | /* Parse .frame <framreg>,<framesize>,RA,<rsa_offset> directives. */ |
4746 | ||
4747 | static void | |
4748 | s_alpha_frame (ignore) | |
4749 | int ignore; | |
4750 | { | |
4751 | long val; | |
4752 | ||
4753 | alpha_evax_proc.framereg = tc_get_register (1); | |
4754 | ||
4755 | SKIP_WHITESPACE (); | |
4756 | if (*input_line_pointer++ != ',' | |
4757 | || get_absolute_expression_and_terminator (&val) != ',') | |
4758 | { | |
4759 | as_warn (_("Bad .frame directive 1./2. param")); | |
4760 | --input_line_pointer; | |
4761 | demand_empty_rest_of_line (); | |
4762 | return; | |
4763 | } | |
4764 | ||
4765 | alpha_evax_proc.framesize = val; | |
4766 | ||
4767 | (void) tc_get_register (1); | |
4768 | SKIP_WHITESPACE (); | |
4769 | if (*input_line_pointer++ != ',') | |
4770 | { | |
4771 | as_warn (_("Bad .frame directive 3./4. param")); | |
4772 | --input_line_pointer; | |
4773 | demand_empty_rest_of_line (); | |
4774 | return; | |
4775 | } | |
4776 | alpha_evax_proc.rsa_offset = get_absolute_expression (); | |
4777 | ||
4778 | return; | |
4779 | } | |
4780 | ||
4781 | static void | |
4782 | s_alpha_pdesc (ignore) | |
4783 | int ignore; | |
4784 | { | |
4785 | char *name; | |
4786 | char name_end; | |
4787 | long val; | |
4788 | register char *p; | |
4789 | expressionS exp; | |
4790 | symbolS *entry_sym; | |
4791 | fixS *fixp; | |
4792 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
4793 | ||
4794 | if (now_seg != alpha_link_section) | |
4795 | { | |
4796 | as_bad (_(".pdesc directive not in link (.link) section")); | |
4797 | demand_empty_rest_of_line (); | |
4798 | return; | |
4799 | } | |
4800 | ||
4801 | if ((alpha_evax_proc.symbol == 0) | |
4802 | || (!S_IS_DEFINED (alpha_evax_proc.symbol))) | |
4803 | { | |
4804 | as_fatal (_(".pdesc has no matching .ent")); | |
4805 | demand_empty_rest_of_line (); | |
4806 | return; | |
4807 | } | |
4808 | ||
7dcc9865 ILT |
4809 | *symbol_get_obj (alpha_evax_proc.symbol) = |
4810 | (valueT) seginfo->literal_pool_size; | |
252b5132 RH |
4811 | |
4812 | expression (&exp); | |
4813 | if (exp.X_op != O_symbol) | |
4814 | { | |
4815 | as_warn (_(".pdesc directive has no entry symbol")); | |
4816 | demand_empty_rest_of_line (); | |
4817 | return; | |
4818 | } | |
4819 | ||
4820 | entry_sym = make_expr_symbol (&exp); | |
4821 | /* Save bfd symbol of proc desc in function symbol. */ | |
9de8d8f1 RH |
4822 | symbol_get_bfdsym (alpha_evax_proc.symbol)->udata.p |
4823 | = symbol_get_bfdsym (entry_sym); | |
252b5132 RH |
4824 | |
4825 | SKIP_WHITESPACE (); | |
4826 | if (*input_line_pointer++ != ',') | |
4827 | { | |
4828 | as_warn (_("No comma after .pdesc <entryname>")); | |
4829 | demand_empty_rest_of_line (); | |
4830 | return; | |
4831 | } | |
4832 | ||
4833 | SKIP_WHITESPACE (); | |
4834 | name = input_line_pointer; | |
4835 | name_end = get_symbol_end (); | |
4836 | ||
32ff5c2e | 4837 | if (strncmp (name, "stack", 5) == 0) |
252b5132 RH |
4838 | { |
4839 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_STACK; | |
4840 | } | |
32ff5c2e | 4841 | else if (strncmp (name, "reg", 3) == 0) |
252b5132 RH |
4842 | { |
4843 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_FP_REGISTER; | |
4844 | } | |
32ff5c2e | 4845 | else if (strncmp (name, "null", 4) == 0) |
252b5132 RH |
4846 | { |
4847 | alpha_evax_proc.pdsckind = PDSC_S_K_KIND_NULL; | |
4848 | } | |
4849 | else | |
4850 | { | |
4851 | as_fatal (_("unknown procedure kind")); | |
4852 | demand_empty_rest_of_line (); | |
4853 | return; | |
4854 | } | |
4855 | ||
4856 | *input_line_pointer = name_end; | |
4857 | demand_empty_rest_of_line (); | |
4858 | ||
4859 | #ifdef md_flush_pending_output | |
4860 | md_flush_pending_output (); | |
4861 | #endif | |
4862 | ||
4863 | frag_align (3, 0, 0); | |
4864 | p = frag_more (16); | |
4865 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
4866 | fixp->fx_done = 1; | |
4867 | seginfo->literal_pool_size += 16; | |
4868 | ||
4869 | *p = alpha_evax_proc.pdsckind | |
1aad8cf8 | 4870 | | ((alpha_evax_proc.framereg == 29) ? PDSC_S_M_BASE_REG_IS_FP : 0); |
66498417 | 4871 | *(p + 1) = PDSC_S_M_NATIVE | PDSC_S_M_NO_JACKET; |
252b5132 RH |
4872 | |
4873 | switch (alpha_evax_proc.pdsckind) | |
4874 | { | |
1aad8cf8 | 4875 | case PDSC_S_K_KIND_NULL: |
66498417 KH |
4876 | *(p + 2) = 0; |
4877 | *(p + 3) = 0; | |
1aad8cf8 KH |
4878 | break; |
4879 | case PDSC_S_K_KIND_FP_REGISTER: | |
66498417 KH |
4880 | *(p + 2) = alpha_evax_proc.fp_save; |
4881 | *(p + 3) = alpha_evax_proc.ra_save; | |
1aad8cf8 KH |
4882 | break; |
4883 | case PDSC_S_K_KIND_FP_STACK: | |
66498417 | 4884 | md_number_to_chars (p + 2, (valueT) alpha_evax_proc.rsa_offset, 2); |
1aad8cf8 KH |
4885 | break; |
4886 | default: /* impossible */ | |
4887 | break; | |
252b5132 RH |
4888 | } |
4889 | ||
66498417 KH |
4890 | *(p + 4) = 0; |
4891 | *(p + 5) = alpha_evax_proc.type & 0x0f; | |
252b5132 RH |
4892 | |
4893 | /* Signature offset. */ | |
66498417 | 4894 | md_number_to_chars (p + 6, (valueT) 0, 2); |
252b5132 | 4895 | |
66498417 | 4896 | fix_new_exp (frag_now, p - frag_now->fr_literal+8, 8, &exp, 0, BFD_RELOC_64); |
252b5132 RH |
4897 | |
4898 | if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_NULL) | |
4899 | return; | |
4900 | ||
4901 | /* Add dummy fix to make add_to_link_pool work. */ | |
4902 | p = frag_more (8); | |
4903 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
4904 | fixp->fx_done = 1; | |
4905 | seginfo->literal_pool_size += 8; | |
4906 | ||
4907 | /* pdesc+16: Size. */ | |
32ff5c2e | 4908 | md_number_to_chars (p, (valueT) alpha_evax_proc.framesize, 4); |
252b5132 | 4909 | |
66498417 | 4910 | md_number_to_chars (p + 4, (valueT) 0, 2); |
252b5132 RH |
4911 | |
4912 | /* Entry length. */ | |
66498417 | 4913 | md_number_to_chars (p + 6, alpha_evax_proc.prologue, 2); |
252b5132 RH |
4914 | |
4915 | if (alpha_evax_proc.pdsckind == PDSC_S_K_KIND_FP_REGISTER) | |
4916 | return; | |
4917 | ||
4918 | /* Add dummy fix to make add_to_link_pool work. */ | |
4919 | p = frag_more (8); | |
4920 | fixp = fix_new (frag_now, p - frag_now->fr_literal, 8, 0, 0, 0, 0); | |
4921 | fixp->fx_done = 1; | |
4922 | seginfo->literal_pool_size += 8; | |
4923 | ||
4924 | /* pdesc+24: register masks. */ | |
4925 | ||
4926 | md_number_to_chars (p, alpha_evax_proc.imask, 4); | |
66498417 | 4927 | md_number_to_chars (p + 4, alpha_evax_proc.fmask, 4); |
252b5132 RH |
4928 | |
4929 | return; | |
4930 | } | |
4931 | ||
252b5132 RH |
4932 | /* Support for crash debug on vms. */ |
4933 | ||
4934 | static void | |
4935 | s_alpha_name (ignore) | |
4936 | int ignore; | |
4937 | { | |
4938 | register char *p; | |
4939 | expressionS exp; | |
4940 | segment_info_type *seginfo = seg_info (alpha_link_section); | |
4941 | ||
4942 | if (now_seg != alpha_link_section) | |
4943 | { | |
4944 | as_bad (_(".name directive not in link (.link) section")); | |
4945 | demand_empty_rest_of_line (); | |
4946 | return; | |
4947 | } | |
4948 | ||
4949 | expression (&exp); | |
4950 | if (exp.X_op != O_symbol) | |
4951 | { | |
4952 | as_warn (_(".name directive has no symbol")); | |
4953 | demand_empty_rest_of_line (); | |
4954 | return; | |
4955 | } | |
4956 | ||
4957 | demand_empty_rest_of_line (); | |
4958 | ||
4959 | #ifdef md_flush_pending_output | |
4960 | md_flush_pending_output (); | |
4961 | #endif | |
4962 | ||
4963 | frag_align (3, 0, 0); | |
4964 | p = frag_more (8); | |
4965 | seginfo->literal_pool_size += 8; | |
4966 | ||
66498417 | 4967 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0, BFD_RELOC_64); |
252b5132 RH |
4968 | |
4969 | return; | |
4970 | } | |
4971 | ||
252b5132 RH |
4972 | static void |
4973 | s_alpha_linkage (ignore) | |
4974 | int ignore; | |
4975 | { | |
4976 | expressionS exp; | |
4977 | char *p; | |
4978 | ||
4979 | #ifdef md_flush_pending_output | |
4980 | md_flush_pending_output (); | |
4981 | #endif | |
4982 | ||
4983 | expression (&exp); | |
4984 | if (exp.X_op != O_symbol) | |
4985 | { | |
4986 | as_fatal (_("No symbol after .linkage")); | |
4987 | } | |
4988 | else | |
4989 | { | |
4990 | p = frag_more (LKP_S_K_SIZE); | |
4991 | memset (p, 0, LKP_S_K_SIZE); | |
4992 | fix_new_exp (frag_now, p - frag_now->fr_literal, LKP_S_K_SIZE, &exp, 0,\ | |
4993 | BFD_RELOC_ALPHA_LINKAGE); | |
4994 | } | |
4995 | demand_empty_rest_of_line (); | |
4996 | ||
4997 | return; | |
4998 | } | |
4999 | ||
252b5132 RH |
5000 | static void |
5001 | s_alpha_code_address (ignore) | |
5002 | int ignore; | |
5003 | { | |
5004 | expressionS exp; | |
5005 | char *p; | |
5006 | ||
5007 | #ifdef md_flush_pending_output | |
5008 | md_flush_pending_output (); | |
5009 | #endif | |
5010 | ||
5011 | expression (&exp); | |
5012 | if (exp.X_op != O_symbol) | |
5013 | { | |
5014 | as_fatal (_("No symbol after .code_address")); | |
5015 | } | |
5016 | else | |
5017 | { | |
5018 | p = frag_more (8); | |
5019 | memset (p, 0, 8); | |
5020 | fix_new_exp (frag_now, p - frag_now->fr_literal, 8, &exp, 0,\ | |
5021 | BFD_RELOC_ALPHA_CODEADDR); | |
5022 | } | |
5023 | demand_empty_rest_of_line (); | |
5024 | ||
5025 | return; | |
5026 | } | |
5027 | ||
252b5132 RH |
5028 | static void |
5029 | s_alpha_fp_save (ignore) | |
5030 | int ignore; | |
5031 | { | |
5032 | ||
5033 | alpha_evax_proc.fp_save = tc_get_register (1); | |
5034 | ||
5035 | demand_empty_rest_of_line (); | |
5036 | return; | |
5037 | } | |
5038 | ||
252b5132 RH |
5039 | static void |
5040 | s_alpha_mask (ignore) | |
5041 | int ignore; | |
5042 | { | |
5043 | long val; | |
5044 | ||
5045 | if (get_absolute_expression_and_terminator (&val) != ',') | |
5046 | { | |
5047 | as_warn (_("Bad .mask directive")); | |
5048 | --input_line_pointer; | |
5049 | } | |
5050 | else | |
5051 | { | |
5052 | alpha_evax_proc.imask = val; | |
32ff5c2e | 5053 | (void) get_absolute_expression (); |
252b5132 RH |
5054 | } |
5055 | demand_empty_rest_of_line (); | |
5056 | ||
5057 | return; | |
5058 | } | |
5059 | ||
252b5132 RH |
5060 | static void |
5061 | s_alpha_fmask (ignore) | |
5062 | int ignore; | |
5063 | { | |
5064 | long val; | |
5065 | ||
5066 | if (get_absolute_expression_and_terminator (&val) != ',') | |
5067 | { | |
5068 | as_warn (_("Bad .fmask directive")); | |
5069 | --input_line_pointer; | |
5070 | } | |
5071 | else | |
5072 | { | |
5073 | alpha_evax_proc.fmask = val; | |
5074 | (void) get_absolute_expression (); | |
5075 | } | |
5076 | demand_empty_rest_of_line (); | |
5077 | ||
5078 | return; | |
5079 | } | |
5080 | ||
5081 | static void | |
5082 | s_alpha_end (ignore) | |
5083 | int ignore; | |
5084 | { | |
5085 | char c; | |
5086 | ||
5087 | c = get_symbol_end (); | |
5088 | *input_line_pointer = c; | |
5089 | demand_empty_rest_of_line (); | |
5090 | alpha_evax_proc.symbol = 0; | |
5091 | ||
5092 | return; | |
5093 | } | |
5094 | ||
252b5132 RH |
5095 | static void |
5096 | s_alpha_file (ignore) | |
5097 | int ignore; | |
5098 | { | |
5099 | symbolS *s; | |
5100 | int length; | |
5101 | static char case_hack[32]; | |
5102 | ||
5103 | extern char *demand_copy_string PARAMS ((int *lenP)); | |
5104 | ||
5105 | sprintf (case_hack, "<CASE:%01d%01d>", | |
9de8d8f1 | 5106 | alpha_flag_hash_long_names, alpha_flag_show_after_trunc); |
252b5132 RH |
5107 | |
5108 | s = symbol_find_or_make (case_hack); | |
9de8d8f1 | 5109 | symbol_get_bfdsym (s)->flags |= BSF_FILE; |
252b5132 RH |
5110 | |
5111 | get_absolute_expression (); | |
5112 | s = symbol_find_or_make (demand_copy_string (&length)); | |
9de8d8f1 | 5113 | symbol_get_bfdsym (s)->flags |= BSF_FILE; |
252b5132 RH |
5114 | demand_empty_rest_of_line (); |
5115 | ||
5116 | return; | |
5117 | } | |
5118 | #endif /* OBJ_EVAX */ | |
5119 | ||
5120 | /* Handle the .gprel32 pseudo op. */ | |
5121 | ||
5122 | static void | |
5123 | s_alpha_gprel32 (ignore) | |
446a06c9 | 5124 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
5125 | { |
5126 | expressionS e; | |
5127 | char *p; | |
5128 | ||
5129 | SKIP_WHITESPACE (); | |
5130 | expression (&e); | |
5131 | ||
5132 | #ifdef OBJ_ELF | |
5133 | switch (e.X_op) | |
5134 | { | |
5135 | case O_constant: | |
32ff5c2e | 5136 | e.X_add_symbol = section_symbol (absolute_section); |
252b5132 RH |
5137 | e.X_op = O_symbol; |
5138 | /* FALLTHRU */ | |
5139 | case O_symbol: | |
5140 | break; | |
5141 | default: | |
bc805888 | 5142 | abort (); |
252b5132 RH |
5143 | } |
5144 | #else | |
5145 | #ifdef OBJ_ECOFF | |
5146 | switch (e.X_op) | |
5147 | { | |
5148 | case O_constant: | |
5149 | e.X_add_symbol = section_symbol (absolute_section); | |
5150 | /* fall through */ | |
5151 | case O_symbol: | |
5152 | e.X_op = O_subtract; | |
5153 | e.X_op_symbol = alpha_gp_symbol; | |
5154 | break; | |
5155 | default: | |
5156 | abort (); | |
5157 | } | |
5158 | #endif | |
5159 | #endif | |
5160 | ||
5161 | if (alpha_auto_align_on && alpha_current_align < 2) | |
5162 | alpha_align (2, (char *) NULL, alpha_insn_label, 0); | |
5163 | if (alpha_current_align > 2) | |
5164 | alpha_current_align = 2; | |
5165 | alpha_insn_label = NULL; | |
5166 | ||
5167 | p = frag_more (4); | |
5168 | memset (p, 0, 4); | |
66498417 | 5169 | fix_new_exp (frag_now, p - frag_now->fr_literal, 4, |
252b5132 RH |
5170 | &e, 0, BFD_RELOC_GPREL32); |
5171 | } | |
5172 | ||
5173 | /* Handle floating point allocation pseudo-ops. This is like the | |
5174 | generic vresion, but it makes sure the current label, if any, is | |
5175 | correctly aligned. */ | |
5176 | ||
5177 | static void | |
5178 | s_alpha_float_cons (type) | |
5179 | int type; | |
5180 | { | |
5181 | int log_size; | |
5182 | ||
5183 | switch (type) | |
5184 | { | |
5185 | default: | |
5186 | case 'f': | |
5187 | case 'F': | |
5188 | log_size = 2; | |
5189 | break; | |
5190 | ||
5191 | case 'd': | |
5192 | case 'D': | |
5193 | case 'G': | |
5194 | log_size = 3; | |
5195 | break; | |
5196 | ||
5197 | case 'x': | |
5198 | case 'X': | |
5199 | case 'p': | |
5200 | case 'P': | |
5201 | log_size = 4; | |
5202 | break; | |
5203 | } | |
5204 | ||
5205 | if (alpha_auto_align_on && alpha_current_align < log_size) | |
5206 | alpha_align (log_size, (char *) NULL, alpha_insn_label, 0); | |
5207 | if (alpha_current_align > log_size) | |
5208 | alpha_current_align = log_size; | |
5209 | alpha_insn_label = NULL; | |
5210 | ||
5211 | float_cons (type); | |
5212 | } | |
5213 | ||
5214 | /* Handle the .proc pseudo op. We don't really do much with it except | |
5215 | parse it. */ | |
5216 | ||
5217 | static void | |
5218 | s_alpha_proc (is_static) | |
446a06c9 | 5219 | int is_static ATTRIBUTE_UNUSED; |
252b5132 RH |
5220 | { |
5221 | char *name; | |
5222 | char c; | |
5223 | char *p; | |
5224 | symbolS *symbolP; | |
5225 | int temp; | |
5226 | ||
5227 | /* Takes ".proc name,nargs" */ | |
5228 | SKIP_WHITESPACE (); | |
5229 | name = input_line_pointer; | |
5230 | c = get_symbol_end (); | |
5231 | p = input_line_pointer; | |
5232 | symbolP = symbol_find_or_make (name); | |
5233 | *p = c; | |
5234 | SKIP_WHITESPACE (); | |
5235 | if (*input_line_pointer != ',') | |
5236 | { | |
5237 | *p = 0; | |
5238 | as_warn (_("Expected comma after name \"%s\""), name); | |
5239 | *p = c; | |
5240 | temp = 0; | |
5241 | ignore_rest_of_line (); | |
5242 | } | |
5243 | else | |
5244 | { | |
5245 | input_line_pointer++; | |
5246 | temp = get_absolute_expression (); | |
5247 | } | |
7dcc9865 | 5248 | /* *symbol_get_obj (symbolP) = (signed char) temp; */ |
252b5132 RH |
5249 | as_warn (_("unhandled: .proc %s,%d"), name, temp); |
5250 | demand_empty_rest_of_line (); | |
5251 | } | |
5252 | ||
5253 | /* Handle the .set pseudo op. This is used to turn on and off most of | |
5254 | the assembler features. */ | |
5255 | ||
5256 | static void | |
5257 | s_alpha_set (x) | |
446a06c9 | 5258 | int x ATTRIBUTE_UNUSED; |
252b5132 RH |
5259 | { |
5260 | char *name, ch, *s; | |
5261 | int yesno = 1; | |
5262 | ||
5263 | SKIP_WHITESPACE (); | |
5264 | name = input_line_pointer; | |
5265 | ch = get_symbol_end (); | |
5266 | ||
5267 | s = name; | |
5268 | if (s[0] == 'n' && s[1] == 'o') | |
5269 | { | |
5270 | yesno = 0; | |
5271 | s += 2; | |
5272 | } | |
5273 | if (!strcmp ("reorder", s)) | |
5274 | /* ignore */ ; | |
5275 | else if (!strcmp ("at", s)) | |
5276 | alpha_noat_on = !yesno; | |
5277 | else if (!strcmp ("macro", s)) | |
5278 | alpha_macros_on = yesno; | |
5279 | else if (!strcmp ("move", s)) | |
5280 | /* ignore */ ; | |
5281 | else if (!strcmp ("volatile", s)) | |
5282 | /* ignore */ ; | |
5283 | else | |
5284 | as_warn (_("Tried to .set unrecognized mode `%s'"), name); | |
5285 | ||
5286 | *input_line_pointer = ch; | |
5287 | demand_empty_rest_of_line (); | |
5288 | } | |
5289 | ||
5290 | /* Handle the .base pseudo op. This changes the assembler's notion of | |
5291 | the $gp register. */ | |
5292 | ||
5293 | static void | |
5294 | s_alpha_base (ignore) | |
446a06c9 | 5295 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
5296 | { |
5297 | #if 0 | |
5298 | if (first_32bit_quadrant) | |
5299 | { | |
5300 | /* not fatal, but it might not work in the end */ | |
5301 | as_warn (_("File overrides no-base-register option.")); | |
5302 | first_32bit_quadrant = 0; | |
5303 | } | |
5304 | #endif | |
5305 | ||
5306 | SKIP_WHITESPACE (); | |
5307 | if (*input_line_pointer == '$') | |
5308 | { /* $rNN form */ | |
5309 | input_line_pointer++; | |
5310 | if (*input_line_pointer == 'r') | |
5311 | input_line_pointer++; | |
5312 | } | |
5313 | ||
5314 | alpha_gp_register = get_absolute_expression (); | |
5315 | if (alpha_gp_register < 0 || alpha_gp_register > 31) | |
5316 | { | |
5317 | alpha_gp_register = AXP_REG_GP; | |
5318 | as_warn (_("Bad base register, using $%d."), alpha_gp_register); | |
5319 | } | |
5320 | ||
5321 | demand_empty_rest_of_line (); | |
5322 | } | |
5323 | ||
5324 | /* Handle the .align pseudo-op. This aligns to a power of two. It | |
5325 | also adjusts any current instruction label. We treat this the same | |
5326 | way the MIPS port does: .align 0 turns off auto alignment. */ | |
5327 | ||
5328 | static void | |
5329 | s_alpha_align (ignore) | |
446a06c9 | 5330 | int ignore ATTRIBUTE_UNUSED; |
252b5132 RH |
5331 | { |
5332 | int align; | |
5333 | char fill, *pfill; | |
5334 | long max_alignment = 15; | |
5335 | ||
5336 | align = get_absolute_expression (); | |
5337 | if (align > max_alignment) | |
5338 | { | |
5339 | align = max_alignment; | |
5340 | as_bad (_("Alignment too large: %d. assumed"), align); | |
5341 | } | |
5342 | else if (align < 0) | |
5343 | { | |
5344 | as_warn (_("Alignment negative: 0 assumed")); | |
5345 | align = 0; | |
5346 | } | |
5347 | ||
5348 | if (*input_line_pointer == ',') | |
5349 | { | |
5350 | input_line_pointer++; | |
5351 | fill = get_absolute_expression (); | |
5352 | pfill = &fill; | |
5353 | } | |
5354 | else | |
5355 | pfill = NULL; | |
5356 | ||
5357 | if (align != 0) | |
5358 | { | |
5359 | alpha_auto_align_on = 1; | |
5360 | alpha_align (align, pfill, alpha_insn_label, 1); | |
5361 | } | |
5362 | else | |
5363 | { | |
5364 | alpha_auto_align_on = 0; | |
5365 | } | |
5366 | ||
5367 | demand_empty_rest_of_line (); | |
5368 | } | |
5369 | ||
5370 | /* Hook the normal string processor to reset known alignment. */ | |
5371 | ||
5372 | static void | |
5373 | s_alpha_stringer (terminate) | |
5374 | int terminate; | |
5375 | { | |
5376 | alpha_current_align = 0; | |
5377 | alpha_insn_label = NULL; | |
5378 | stringer (terminate); | |
5379 | } | |
5380 | ||
5381 | /* Hook the normal space processing to reset known alignment. */ | |
5382 | ||
5383 | static void | |
5384 | s_alpha_space (ignore) | |
5385 | int ignore; | |
5386 | { | |
5387 | alpha_current_align = 0; | |
5388 | alpha_insn_label = NULL; | |
5389 | s_space (ignore); | |
5390 | } | |
5391 | ||
5392 | /* Hook into cons for auto-alignment. */ | |
5393 | ||
5394 | void | |
5395 | alpha_cons_align (size) | |
5396 | int size; | |
5397 | { | |
5398 | int log_size; | |
5399 | ||
5400 | log_size = 0; | |
5401 | while ((size >>= 1) != 0) | |
5402 | ++log_size; | |
5403 | ||
5404 | if (alpha_auto_align_on && alpha_current_align < log_size) | |
5405 | alpha_align (log_size, (char *) NULL, alpha_insn_label, 0); | |
5406 | if (alpha_current_align > log_size) | |
5407 | alpha_current_align = log_size; | |
5408 | alpha_insn_label = NULL; | |
5409 | } | |
5410 | ||
5411 | /* Here come the .uword, .ulong, and .uquad explicitly unaligned | |
5412 | pseudos. We just turn off auto-alignment and call down to cons. */ | |
5413 | ||
5414 | static void | |
5415 | s_alpha_ucons (bytes) | |
5416 | int bytes; | |
5417 | { | |
5418 | int hold = alpha_auto_align_on; | |
5419 | alpha_auto_align_on = 0; | |
5420 | cons (bytes); | |
5421 | alpha_auto_align_on = hold; | |
5422 | } | |
5423 | ||
5424 | /* Switch the working cpu type. */ | |
5425 | ||
5426 | static void | |
5427 | s_alpha_arch (ignored) | |
446a06c9 | 5428 | int ignored ATTRIBUTE_UNUSED; |
252b5132 RH |
5429 | { |
5430 | char *name, ch; | |
5431 | const struct cpu_type *p; | |
5432 | ||
5433 | SKIP_WHITESPACE (); | |
5434 | name = input_line_pointer; | |
5435 | ch = get_symbol_end (); | |
5436 | ||
5437 | for (p = cpu_types; p->name; ++p) | |
32ff5c2e | 5438 | if (strcmp (name, p->name) == 0) |
252b5132 | 5439 | { |
1aad8cf8 | 5440 | alpha_target_name = p->name, alpha_target = p->flags; |
252b5132 RH |
5441 | goto found; |
5442 | } | |
32ff5c2e | 5443 | as_warn ("Unknown CPU identifier `%s'", name); |
252b5132 RH |
5444 | |
5445 | found: | |
5446 | *input_line_pointer = ch; | |
5447 | demand_empty_rest_of_line (); | |
5448 | } | |
252b5132 | 5449 | \f |
252b5132 RH |
5450 | #ifdef DEBUG1 |
5451 | /* print token expression with alpha specific extension. */ | |
5452 | ||
5453 | static void | |
32ff5c2e | 5454 | alpha_print_token (f, exp) |
1aad8cf8 KH |
5455 | FILE *f; |
5456 | const expressionS *exp; | |
252b5132 RH |
5457 | { |
5458 | switch (exp->X_op) | |
5459 | { | |
1aad8cf8 KH |
5460 | case O_cpregister: |
5461 | putc (',', f); | |
5462 | /* FALLTHRU */ | |
5463 | case O_pregister: | |
5464 | putc ('(', f); | |
5465 | { | |
5466 | expressionS nexp = *exp; | |
5467 | nexp.X_op = O_register; | |
5468 | print_expr (f, &nexp); | |
5469 | } | |
5470 | putc (')', f); | |
5471 | break; | |
5472 | default: | |
5473 | print_expr (f, exp); | |
5474 | break; | |
252b5132 RH |
5475 | } |
5476 | return; | |
5477 | } | |
5478 | #endif | |
5479 | \f | |
5480 | /* The target specific pseudo-ops which we support. */ | |
5481 | ||
66498417 | 5482 | const pseudo_typeS md_pseudo_table[] = { |
252b5132 RH |
5483 | #ifdef OBJ_ECOFF |
5484 | {"comm", s_alpha_comm, 0}, /* osf1 compiler does this */ | |
5485 | {"rdata", s_alpha_rdata, 0}, | |
5486 | #endif | |
5487 | {"text", s_alpha_text, 0}, | |
5488 | {"data", s_alpha_data, 0}, | |
5489 | #ifdef OBJ_ECOFF | |
5490 | {"sdata", s_alpha_sdata, 0}, | |
5491 | #endif | |
5492 | #ifdef OBJ_ELF | |
5493 | {"section", s_alpha_section, 0}, | |
5494 | {"section.s", s_alpha_section, 0}, | |
5495 | {"sect", s_alpha_section, 0}, | |
5496 | {"sect.s", s_alpha_section, 0}, | |
5497 | #endif | |
5498 | #ifdef OBJ_EVAX | |
5499 | { "pdesc", s_alpha_pdesc, 0}, | |
5500 | { "name", s_alpha_name, 0}, | |
5501 | { "linkage", s_alpha_linkage, 0}, | |
5502 | { "code_address", s_alpha_code_address, 0}, | |
5503 | { "ent", s_alpha_ent, 0}, | |
5504 | { "frame", s_alpha_frame, 0}, | |
5505 | { "fp_save", s_alpha_fp_save, 0}, | |
5506 | { "mask", s_alpha_mask, 0}, | |
5507 | { "fmask", s_alpha_fmask, 0}, | |
5508 | { "end", s_alpha_end, 0}, | |
5509 | { "file", s_alpha_file, 0}, | |
5510 | { "rdata", s_alpha_section, 1}, | |
5511 | { "comm", s_alpha_comm, 0}, | |
5512 | { "link", s_alpha_section, 3}, | |
5513 | { "ctors", s_alpha_section, 4}, | |
5514 | { "dtors", s_alpha_section, 5}, | |
5515 | #endif | |
5516 | #ifdef OBJ_ELF | |
5517 | /* Frame related pseudos. */ | |
5518 | {"ent", s_alpha_ent, 0}, | |
5519 | {"end", s_alpha_end, 0}, | |
5520 | {"mask", s_alpha_mask, 0}, | |
5521 | {"fmask", s_alpha_mask, 1}, | |
5522 | {"frame", s_alpha_frame, 0}, | |
5523 | {"prologue", s_alpha_prologue, 0}, | |
4dc7ead9 RH |
5524 | {"file", s_alpha_file, 5}, |
5525 | {"loc", s_alpha_loc, 9}, | |
a8316fe2 RH |
5526 | {"stabs", s_alpha_stab, 's'}, |
5527 | {"stabn", s_alpha_stab, 'n'}, | |
252b5132 RH |
5528 | /* COFF debugging related pseudos. */ |
5529 | {"begin", s_alpha_coff_wrapper, 0}, | |
5530 | {"bend", s_alpha_coff_wrapper, 1}, | |
5531 | {"def", s_alpha_coff_wrapper, 2}, | |
5532 | {"dim", s_alpha_coff_wrapper, 3}, | |
5533 | {"endef", s_alpha_coff_wrapper, 4}, | |
4dc7ead9 RH |
5534 | {"scl", s_alpha_coff_wrapper, 5}, |
5535 | {"tag", s_alpha_coff_wrapper, 6}, | |
5536 | {"val", s_alpha_coff_wrapper, 7}, | |
252b5132 RH |
5537 | #else |
5538 | {"prologue", s_ignore, 0}, | |
5539 | #endif | |
5540 | {"gprel32", s_alpha_gprel32, 0}, | |
5541 | {"t_floating", s_alpha_float_cons, 'd'}, | |
5542 | {"s_floating", s_alpha_float_cons, 'f'}, | |
5543 | {"f_floating", s_alpha_float_cons, 'F'}, | |
5544 | {"g_floating", s_alpha_float_cons, 'G'}, | |
5545 | {"d_floating", s_alpha_float_cons, 'D'}, | |
5546 | ||
5547 | {"proc", s_alpha_proc, 0}, | |
5548 | {"aproc", s_alpha_proc, 1}, | |
5549 | {"set", s_alpha_set, 0}, | |
5550 | {"reguse", s_ignore, 0}, | |
5551 | {"livereg", s_ignore, 0}, | |
5552 | {"base", s_alpha_base, 0}, /*??*/ | |
5553 | {"option", s_ignore, 0}, | |
5554 | {"aent", s_ignore, 0}, | |
5555 | {"ugen", s_ignore, 0}, | |
5556 | {"eflag", s_ignore, 0}, | |
5557 | ||
5558 | {"align", s_alpha_align, 0}, | |
5559 | {"double", s_alpha_float_cons, 'd'}, | |
5560 | {"float", s_alpha_float_cons, 'f'}, | |
5561 | {"single", s_alpha_float_cons, 'f'}, | |
5562 | {"ascii", s_alpha_stringer, 0}, | |
5563 | {"asciz", s_alpha_stringer, 1}, | |
5564 | {"string", s_alpha_stringer, 1}, | |
5565 | {"space", s_alpha_space, 0}, | |
5566 | {"skip", s_alpha_space, 0}, | |
5567 | {"zero", s_alpha_space, 0}, | |
5568 | ||
5569 | /* Unaligned data pseudos. */ | |
5570 | {"uword", s_alpha_ucons, 2}, | |
5571 | {"ulong", s_alpha_ucons, 4}, | |
5572 | {"uquad", s_alpha_ucons, 8}, | |
5573 | ||
5574 | #ifdef OBJ_ELF | |
5575 | /* Dwarf wants these versions of unaligned. */ | |
5576 | {"2byte", s_alpha_ucons, 2}, | |
5577 | {"4byte", s_alpha_ucons, 4}, | |
5578 | {"8byte", s_alpha_ucons, 8}, | |
5579 | #endif | |
5580 | ||
5581 | /* We don't do any optimizing, so we can safely ignore these. */ | |
5582 | {"noalias", s_ignore, 0}, | |
5583 | {"alias", s_ignore, 0}, | |
5584 | ||
5585 | {"arch", s_alpha_arch, 0}, | |
5586 | ||
5587 | {NULL, 0, 0}, | |
5588 | }; | |
252b5132 RH |
5589 | \f |
5590 | /* Build a BFD section with its flags set appropriately for the .lita, | |
5591 | .lit8, or .lit4 sections. */ | |
5592 | ||
5593 | static void | |
5594 | create_literal_section (name, secp, symp) | |
5595 | const char *name; | |
5596 | segT *secp; | |
5597 | symbolS **symp; | |
5598 | { | |
5599 | segT current_section = now_seg; | |
5600 | int current_subsec = now_subseg; | |
5601 | segT new_sec; | |
5602 | ||
5603 | *secp = new_sec = subseg_new (name, 0); | |
5604 | subseg_set (current_section, current_subsec); | |
5605 | bfd_set_section_alignment (stdoutput, new_sec, 4); | |
5606 | bfd_set_section_flags (stdoutput, new_sec, | |
5607 | SEC_RELOC | SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
5608 | | SEC_DATA); | |
5609 | ||
5610 | S_CLEAR_EXTERNAL (*symp = section_symbol (new_sec)); | |
5611 | } | |
5612 | ||
5613 | #ifdef OBJ_ECOFF | |
5614 | ||
5615 | /* @@@ GP selection voodoo. All of this seems overly complicated and | |
5616 | unnecessary; which is the primary reason it's for ECOFF only. */ | |
5617 | ||
5618 | static inline void | |
5619 | maybe_set_gp (sec) | |
5620 | asection *sec; | |
5621 | { | |
5622 | bfd_vma vma; | |
5623 | if (!sec) | |
5624 | return; | |
5625 | vma = bfd_get_section_vma (foo, sec); | |
5626 | if (vma && vma < alpha_gp_value) | |
5627 | alpha_gp_value = vma; | |
5628 | } | |
5629 | ||
5630 | static void | |
5631 | select_gp_value () | |
5632 | { | |
5633 | assert (alpha_gp_value == 0); | |
5634 | ||
5635 | /* Get minus-one in whatever width... */ | |
66498417 KH |
5636 | alpha_gp_value = 0; |
5637 | alpha_gp_value--; | |
252b5132 RH |
5638 | |
5639 | /* Select the smallest VMA of these existing sections. */ | |
5640 | maybe_set_gp (alpha_lita_section); | |
5641 | #if 0 | |
5642 | /* These were disabled before -- should we use them? */ | |
5643 | maybe_set_gp (sdata); | |
5644 | maybe_set_gp (lit8_sec); | |
5645 | maybe_set_gp (lit4_sec); | |
5646 | #endif | |
5647 | ||
5648 | /* @@ Will a simple 0x8000 work here? If not, why not? */ | |
5649 | #define GP_ADJUSTMENT (0x8000 - 0x10) | |
5650 | ||
5651 | alpha_gp_value += GP_ADJUSTMENT; | |
5652 | ||
5653 | S_SET_VALUE (alpha_gp_symbol, alpha_gp_value); | |
5654 | ||
5655 | #ifdef DEBUG1 | |
5656 | printf (_("Chose GP value of %lx\n"), alpha_gp_value); | |
5657 | #endif | |
5658 | } | |
5659 | #endif /* OBJ_ECOFF */ | |
5660 | ||
5661 | /* Called internally to handle all alignment needs. This takes care | |
5662 | of eliding calls to frag_align if'n the cached current alignment | |
5663 | says we've already got it, as well as taking care of the auto-align | |
5664 | feature wrt labels. */ | |
5665 | ||
5666 | static void | |
5667 | alpha_align (n, pfill, label, force) | |
5668 | int n; | |
5669 | char *pfill; | |
5670 | symbolS *label; | |
446a06c9 | 5671 | int force ATTRIBUTE_UNUSED; |
252b5132 RH |
5672 | { |
5673 | if (alpha_current_align >= n) | |
5674 | return; | |
5675 | ||
5676 | if (pfill == NULL) | |
5677 | { | |
0a9ef439 RH |
5678 | if (subseg_text_p (now_seg)) |
5679 | frag_align_code (n, 0); | |
252b5132 RH |
5680 | else |
5681 | frag_align (n, 0, 0); | |
5682 | } | |
5683 | else | |
5684 | frag_align (n, *pfill, 0); | |
5685 | ||
5686 | alpha_current_align = n; | |
5687 | ||
98007ce7 | 5688 | if (label != NULL && S_GET_SEGMENT (label) == now_seg) |
252b5132 | 5689 | { |
49309057 | 5690 | symbol_set_frag (label, frag_now); |
252b5132 RH |
5691 | S_SET_VALUE (label, (valueT) frag_now_fix ()); |
5692 | } | |
5693 | ||
98007ce7 | 5694 | record_alignment (now_seg, n); |
252b5132 | 5695 | |
0a9ef439 | 5696 | /* ??? If alpha_flag_relax && force && elf, record the requested alignment |
252b5132 RH |
5697 | in a reloc for the linker to see. */ |
5698 | } | |
5699 | ||
0a9ef439 RH |
5700 | /* This is called from HANDLE_ALIGN in write.c. Fill in the contents |
5701 | of an rs_align_code fragment. */ | |
5702 | ||
bfb32b52 | 5703 | void |
0a9ef439 RH |
5704 | alpha_handle_align (fragp) |
5705 | fragS *fragp; | |
5706 | { | |
5707 | static char const unop[4] = { 0x00, 0x00, 0xe0, 0x2f }; | |
5708 | static char const nopunop[8] = { | |
1aad8cf8 KH |
5709 | 0x1f, 0x04, 0xff, 0x47, |
5710 | 0x00, 0x00, 0xe0, 0x2f | |
0a9ef439 RH |
5711 | }; |
5712 | ||
5713 | int bytes, fix; | |
5714 | char *p; | |
5715 | ||
5716 | if (fragp->fr_type != rs_align_code) | |
5717 | return; | |
5718 | ||
5719 | bytes = fragp->fr_next->fr_address - fragp->fr_address - fragp->fr_fix; | |
5720 | p = fragp->fr_literal + fragp->fr_fix; | |
5721 | fix = 0; | |
5722 | ||
5723 | if (bytes & 3) | |
5724 | { | |
5725 | fix = bytes & 3; | |
5726 | memset (p, 0, fix); | |
5727 | p += fix; | |
5728 | bytes -= fix; | |
5729 | } | |
5730 | ||
5731 | if (bytes & 4) | |
5732 | { | |
5733 | memcpy (p, unop, 4); | |
5734 | p += 4; | |
5735 | bytes -= 4; | |
5736 | fix += 4; | |
5737 | } | |
5738 | ||
5739 | memcpy (p, nopunop, 8); | |
5740 | ||
5741 | fragp->fr_fix += fix; | |
5742 | fragp->fr_var = 8; | |
5743 | } | |
5744 | ||
252b5132 RH |
5745 | /* The Alpha has support for some VAX floating point types, as well as for |
5746 | IEEE floating point. We consider IEEE to be the primary floating point | |
5747 | format, and sneak in the VAX floating point support here. */ | |
5748 | #define md_atof vax_md_atof | |
5749 | #include "config/atof-vax.c" |