Commit | Line | Data |
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adde6300 AM |
1 | /* tc-avr.c -- Assembler code for the ATMEL AVR |
2 | ||
2132e3a3 AM |
3 | Copyright 1999, 2000, 2001, 2002, 2004, 2005 |
4 | Free Software Foundation, Inc. | |
adde6300 AM |
5 | Contributed by Denis Chertykov <denisc@overta.ru> |
6 | ||
7 | This file is part of GAS, the GNU Assembler. | |
8 | ||
9 | GAS is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GAS is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GAS; see the file COPYING. If not, write to | |
4b4da160 NC |
21 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
adde6300 AM |
23 | |
24 | #include <stdio.h> | |
adde6300 | 25 | #include "as.h" |
3882b010 | 26 | #include "safe-ctype.h" |
adde6300 AM |
27 | #include "subsegs.h" |
28 | ||
1188e082 DC |
29 | struct avr_opcodes_s |
30 | { | |
31 | char *name; | |
32 | char *constraints; | |
c6a7ab1f | 33 | int insn_size; /* In words. */ |
1188e082 DC |
34 | int isa; |
35 | unsigned int bin_opcode; | |
36 | }; | |
37 | ||
38 | #define AVR_INSN(NAME, CONSTR, OPCODE, SIZE, ISA, BIN) \ | |
39 | {#NAME, CONSTR, SIZE, ISA, BIN}, | |
40 | ||
41 | struct avr_opcodes_s avr_opcodes[] = | |
42 | { | |
43 | #include "opcode/avr.h" | |
44 | {NULL, NULL, 0, 0, 0} | |
45 | }; | |
46 | ||
adde6300 AM |
47 | const char comment_chars[] = ";"; |
48 | const char line_comment_chars[] = "#"; | |
49 | const char line_separator_chars[] = "$"; | |
50 | ||
adde6300 AM |
51 | const char *md_shortopts = "m:"; |
52 | struct mcu_type_s | |
53 | { | |
54 | char *name; | |
55 | int isa; | |
56 | int mach; | |
57 | }; | |
58 | ||
1f8ae5e6 DC |
59 | /* XXX - devices that don't seem to exist (renamed, replaced with larger |
60 | ones, or planned but never produced), left here for compatibility. | |
61 | TODO: hide them in show_mcu_list output? */ | |
62 | ||
adde6300 AM |
63 | static struct mcu_type_s mcu_types[] = |
64 | { | |
b170af93 | 65 | {"avr1", AVR_ISA_TINY1, bfd_mach_avr1}, |
71d7ecf2 | 66 | {"avr2", AVR_ISA_TINY2, bfd_mach_avr2}, |
b170af93 | 67 | {"avr3", AVR_ISA_M103, bfd_mach_avr3}, |
1f8ae5e6 | 68 | {"avr4", AVR_ISA_M8, bfd_mach_avr4}, |
65aa24b6 | 69 | {"avr5", AVR_ISA_ALL, bfd_mach_avr5}, |
adde6300 | 70 | {"at90s1200", AVR_ISA_1200, bfd_mach_avr1}, |
1f8ae5e6 | 71 | {"attiny10", AVR_ISA_TINY1, bfd_mach_avr1}, /* XXX -> tn11 */ |
b170af93 DC |
72 | {"attiny11", AVR_ISA_TINY1, bfd_mach_avr1}, |
73 | {"attiny12", AVR_ISA_TINY1, bfd_mach_avr1}, | |
74 | {"attiny15", AVR_ISA_TINY1, bfd_mach_avr1}, | |
75 | {"attiny28", AVR_ISA_TINY1, bfd_mach_avr1}, | |
adde6300 AM |
76 | {"at90s2313", AVR_ISA_2xxx, bfd_mach_avr2}, |
77 | {"at90s2323", AVR_ISA_2xxx, bfd_mach_avr2}, | |
1f8ae5e6 | 78 | {"at90s2333", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 4433 */ |
adde6300 | 79 | {"at90s2343", AVR_ISA_2xxx, bfd_mach_avr2}, |
bdfdba87 MM |
80 | {"attiny22", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 2343 */ |
81 | {"attiny26", AVR_ISA_2xxx, bfd_mach_avr2}, | |
adde6300 | 82 | {"at90s4433", AVR_ISA_2xxx, bfd_mach_avr2}, |
1f8ae5e6 DC |
83 | {"at90s4414", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8515 */ |
84 | {"at90s4434", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8535 */ | |
65aa24b6 NC |
85 | {"at90s8515", AVR_ISA_2xxx, bfd_mach_avr2}, |
86 | {"at90s8535", AVR_ISA_2xxx, bfd_mach_avr2}, | |
87 | {"at90c8534", AVR_ISA_2xxx, bfd_mach_avr2}, | |
8a6def3b | 88 | {"at86rf401", AVR_ISA_2xxx, bfd_mach_avr2}, |
71d7ecf2 MM |
89 | {"attiny13", AVR_ISA_TINY2, bfd_mach_avr2}, |
90 | {"attiny2313",AVR_ISA_TINY2, bfd_mach_avr2}, | |
1f8ae5e6 | 91 | {"atmega603", AVR_ISA_M603, bfd_mach_avr3}, /* XXX -> m103 */ |
b170af93 | 92 | {"atmega103", AVR_ISA_M103, bfd_mach_avr3}, |
1f8ae5e6 | 93 | {"at43usb320",AVR_ISA_M103, bfd_mach_avr3}, |
bdfdba87 | 94 | {"at43usb355",AVR_ISA_M603, bfd_mach_avr3}, |
1f8ae5e6 | 95 | {"at76c711", AVR_ISA_M603, bfd_mach_avr3}, |
23794b24 | 96 | {"atmega48", AVR_ISA_M8, bfd_mach_avr4}, |
1f8ae5e6 | 97 | {"atmega8", AVR_ISA_M8, bfd_mach_avr4}, |
8a6def3b | 98 | {"atmega83", AVR_ISA_M8, bfd_mach_avr4}, /* XXX -> m8535 */ |
1f8ae5e6 | 99 | {"atmega85", AVR_ISA_M8, bfd_mach_avr4}, /* XXX -> m8 */ |
23794b24 | 100 | {"atmega88", AVR_ISA_M8, bfd_mach_avr4}, |
bdfdba87 | 101 | {"atmega8515",AVR_ISA_M8, bfd_mach_avr4}, |
8a6def3b | 102 | {"atmega8535",AVR_ISA_M8, bfd_mach_avr4}, |
1f8ae5e6 | 103 | {"atmega16", AVR_ISA_M323, bfd_mach_avr5}, |
65aa24b6 | 104 | {"atmega161", AVR_ISA_M161, bfd_mach_avr5}, |
bdfdba87 | 105 | {"atmega162", AVR_ISA_M323, bfd_mach_avr5}, |
65aa24b6 | 106 | {"atmega163", AVR_ISA_M161, bfd_mach_avr5}, |
5c54fd37 | 107 | {"atmega165", AVR_ISA_M323, bfd_mach_avr5}, |
23794b24 | 108 | {"atmega168", AVR_ISA_M323, bfd_mach_avr5}, |
8a6def3b | 109 | {"atmega169", AVR_ISA_M323, bfd_mach_avr5}, |
1f8ae5e6 DC |
110 | {"atmega32", AVR_ISA_M323, bfd_mach_avr5}, |
111 | {"atmega323", AVR_ISA_M323, bfd_mach_avr5}, | |
5c54fd37 NC |
112 | {"atmega325", AVR_ISA_M323, bfd_mach_avr5}, |
113 | {"atmega3250",AVR_ISA_M323, bfd_mach_avr5}, | |
1f8ae5e6 DC |
114 | {"atmega64", AVR_ISA_M323, bfd_mach_avr5}, |
115 | {"atmega128", AVR_ISA_M128, bfd_mach_avr5}, | |
5c54fd37 NC |
116 | {"atmega645", AVR_ISA_M323, bfd_mach_avr5}, |
117 | {"atmega6450",AVR_ISA_M323, bfd_mach_avr5}, | |
23794b24 | 118 | {"at90can128",AVR_ISA_M128, bfd_mach_avr5}, |
65aa24b6 | 119 | {"at94k", AVR_ISA_94K, bfd_mach_avr5}, |
adde6300 AM |
120 | {NULL, 0, 0} |
121 | }; | |
122 | ||
adde6300 AM |
123 | /* Current MCU type. */ |
124 | static struct mcu_type_s default_mcu = {"avr2", AVR_ISA_2xxx,bfd_mach_avr2}; | |
125 | static struct mcu_type_s *avr_mcu = &default_mcu; | |
126 | ||
00d2865b NC |
127 | /* AVR target-specific switches. */ |
128 | struct avr_opt_s | |
129 | { | |
c6a7ab1f NC |
130 | int all_opcodes; /* -mall-opcodes: accept all known AVR opcodes */ |
131 | int no_skip_bug; /* -mno-skip-bug: no warnings for skipping 2-word insns */ | |
132 | int no_wrap; /* -mno-wrap: reject rjmp/rcall with 8K wrap-around */ | |
00d2865b NC |
133 | }; |
134 | ||
135 | static struct avr_opt_s avr_opt = { 0, 0, 0 }; | |
136 | ||
adde6300 AM |
137 | const char EXP_CHARS[] = "eE"; |
138 | const char FLT_CHARS[] = "dD"; | |
139 | static void avr_set_arch (int dummy); | |
140 | ||
141 | /* The target specific pseudo-ops which we support. */ | |
142 | const pseudo_typeS md_pseudo_table[] = | |
143 | { | |
144 | {"arch", avr_set_arch, 0}, | |
145 | { NULL, NULL, 0} | |
146 | }; | |
147 | ||
148 | #define LDI_IMMEDIATE(x) (((x) & 0xf) | (((x) << 4) & 0xf00)) | |
adde6300 | 149 | |
65b1d096 DC |
150 | static void show_mcu_list PARAMS ((FILE *)); |
151 | static char *skip_space PARAMS ((char *)); | |
152 | static char *extract_word PARAMS ((char *, char *, int)); | |
153 | static unsigned int avr_operand PARAMS ((struct avr_opcodes_s *, | |
154 | int, char *, char **)); | |
155 | static unsigned int avr_operands PARAMS ((struct avr_opcodes_s *, char **)); | |
156 | static unsigned int avr_get_constant PARAMS ((char *, int)); | |
157 | static char *parse_exp PARAMS ((char *, expressionS *)); | |
158 | static bfd_reloc_code_real_type avr_ldi_expression PARAMS ((expressionS *)); | |
adde6300 | 159 | |
adde6300 AM |
160 | #define EXP_MOD_NAME(i) exp_mod[i].name |
161 | #define EXP_MOD_RELOC(i) exp_mod[i].reloc | |
162 | #define EXP_MOD_NEG_RELOC(i) exp_mod[i].neg_reloc | |
163 | #define HAVE_PM_P(i) exp_mod[i].have_pm | |
164 | ||
165 | struct exp_mod_s | |
166 | { | |
c6a7ab1f | 167 | char *name; |
adde6300 AM |
168 | bfd_reloc_code_real_type reloc; |
169 | bfd_reloc_code_real_type neg_reloc; | |
170 | int have_pm; | |
171 | }; | |
172 | ||
c6a7ab1f NC |
173 | static struct exp_mod_s exp_mod[] = |
174 | { | |
adde6300 AM |
175 | {"hh8", BFD_RELOC_AVR_HH8_LDI, BFD_RELOC_AVR_HH8_LDI_NEG, 1}, |
176 | {"pm_hh8", BFD_RELOC_AVR_HH8_LDI_PM, BFD_RELOC_AVR_HH8_LDI_PM_NEG, 0}, | |
177 | {"hi8", BFD_RELOC_AVR_HI8_LDI, BFD_RELOC_AVR_HI8_LDI_NEG, 1}, | |
178 | {"pm_hi8", BFD_RELOC_AVR_HI8_LDI_PM, BFD_RELOC_AVR_HI8_LDI_PM_NEG, 0}, | |
179 | {"lo8", BFD_RELOC_AVR_LO8_LDI, BFD_RELOC_AVR_LO8_LDI_NEG, 1}, | |
180 | {"pm_lo8", BFD_RELOC_AVR_LO8_LDI_PM, BFD_RELOC_AVR_LO8_LDI_PM_NEG, 0}, | |
181 | {"hlo8", -BFD_RELOC_AVR_LO8_LDI, -BFD_RELOC_AVR_LO8_LDI_NEG, 0}, | |
182 | {"hhi8", -BFD_RELOC_AVR_HI8_LDI, -BFD_RELOC_AVR_HI8_LDI_NEG, 0}, | |
183 | }; | |
184 | ||
185 | /* Opcode hash table. */ | |
186 | static struct hash_control *avr_hash; | |
187 | ||
188 | /* Reloc modifiers hash control (hh8,hi8,lo8,pm_xx). */ | |
189 | static struct hash_control *avr_mod_hash; | |
190 | ||
00d2865b NC |
191 | #define OPTION_MMCU 'm' |
192 | #define OPTION_ALL_OPCODES (OPTION_MD_BASE + 1) | |
193 | #define OPTION_NO_SKIP_BUG (OPTION_MD_BASE + 2) | |
194 | #define OPTION_NO_WRAP (OPTION_MD_BASE + 3) | |
adde6300 | 195 | |
c6a7ab1f NC |
196 | struct option md_longopts[] = |
197 | { | |
00d2865b NC |
198 | { "mmcu", required_argument, NULL, OPTION_MMCU }, |
199 | { "mall-opcodes", no_argument, NULL, OPTION_ALL_OPCODES }, | |
200 | { "mno-skip-bug", no_argument, NULL, OPTION_NO_SKIP_BUG }, | |
201 | { "mno-wrap", no_argument, NULL, OPTION_NO_WRAP }, | |
202 | { NULL, no_argument, NULL, 0 } | |
adde6300 | 203 | }; |
adde6300 | 204 | |
c6a7ab1f | 205 | size_t md_longopts_size = sizeof (md_longopts); |
00d2865b NC |
206 | |
207 | /* Display nicely formatted list of known MCU names. */ | |
c6a7ab1f | 208 | |
00d2865b | 209 | static void |
c6a7ab1f NC |
210 | show_mcu_list (stream) |
211 | FILE *stream; | |
00d2865b NC |
212 | { |
213 | int i, x; | |
214 | ||
215 | fprintf (stream, _("Known MCU names:")); | |
216 | x = 1000; | |
1dab94dd | 217 | |
00d2865b NC |
218 | for (i = 0; mcu_types[i].name; i++) |
219 | { | |
220 | int len = strlen (mcu_types[i].name); | |
1dab94dd | 221 | |
00d2865b | 222 | x += len + 1; |
1dab94dd | 223 | |
00d2865b | 224 | if (x < 75) |
c6a7ab1f | 225 | fprintf (stream, " %s", mcu_types[i].name); |
00d2865b NC |
226 | else |
227 | { | |
228 | fprintf (stream, "\n %s", mcu_types[i].name); | |
229 | x = len + 2; | |
230 | } | |
231 | } | |
1dab94dd | 232 | |
c6a7ab1f | 233 | fprintf (stream, "\n"); |
00d2865b NC |
234 | } |
235 | ||
adde6300 AM |
236 | static inline char * |
237 | skip_space (s) | |
c6a7ab1f | 238 | char *s; |
adde6300 AM |
239 | { |
240 | while (*s == ' ' || *s == '\t') | |
241 | ++s; | |
242 | return s; | |
243 | } | |
244 | ||
245 | /* Extract one word from FROM and copy it to TO. */ | |
c6a7ab1f | 246 | |
adde6300 AM |
247 | static char * |
248 | extract_word (char *from, char *to, int limit) | |
249 | { | |
250 | char *op_start; | |
251 | char *op_end; | |
252 | int size = 0; | |
253 | ||
254 | /* Drop leading whitespace. */ | |
255 | from = skip_space (from); | |
256 | *to = 0; | |
c6a7ab1f | 257 | |
adde6300 | 258 | /* Find the op code end. */ |
c6a7ab1f | 259 | for (op_start = op_end = from; *op_end != 0 && is_part_of_name (*op_end);) |
adde6300 AM |
260 | { |
261 | to[size++] = *op_end++; | |
262 | if (size + 1 >= limit) | |
263 | break; | |
264 | } | |
1dab94dd | 265 | |
adde6300 AM |
266 | to[size] = 0; |
267 | return op_end; | |
268 | } | |
269 | ||
270 | int | |
271 | md_estimate_size_before_relax (fragp, seg) | |
df136245 DC |
272 | fragS *fragp ATTRIBUTE_UNUSED; |
273 | asection *seg ATTRIBUTE_UNUSED; | |
adde6300 AM |
274 | { |
275 | abort (); | |
276 | return 0; | |
277 | } | |
278 | ||
279 | void | |
280 | md_show_usage (stream) | |
c6a7ab1f | 281 | FILE *stream; |
adde6300 | 282 | { |
00d2865b NC |
283 | fprintf (stream, |
284 | _("AVR options:\n" | |
adde6300 AM |
285 | " -mmcu=[avr-name] select microcontroller variant\n" |
286 | " [avr-name] can be:\n" | |
65aa24b6 NC |
287 | " avr1 - AT90S1200, ATtiny1x, ATtiny28\n" |
288 | " avr2 - AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22\n" | |
289 | " avr3 - ATmega103, ATmega603\n" | |
290 | " avr4 - ATmega83, ATmega85\n" | |
291 | " avr5 - ATmega161, ATmega163, ATmega32, AT94K\n" | |
adde6300 | 292 | " or immediate microcontroller name.\n")); |
00d2865b NC |
293 | fprintf (stream, |
294 | _(" -mall-opcodes accept all AVR opcodes, even if not supported by MCU\n" | |
295 | " -mno-skip-bug disable warnings for skipping two-word instructions\n" | |
296 | " (default for avr4, avr5)\n" | |
297 | " -mno-wrap reject rjmp/rcall instructions with 8K wrap-around\n" | |
298 | " (default for avr3, avr5)\n")); | |
299 | show_mcu_list (stream); | |
adde6300 AM |
300 | } |
301 | ||
302 | static void | |
303 | avr_set_arch (dummy) | |
df136245 | 304 | int dummy ATTRIBUTE_UNUSED; |
adde6300 | 305 | { |
c6a7ab1f | 306 | char *str; |
1dab94dd | 307 | |
c6a7ab1f | 308 | str = (char *) alloca (20); |
adde6300 | 309 | input_line_pointer = extract_word (input_line_pointer, str, 20); |
00d2865b | 310 | md_parse_option (OPTION_MMCU, str); |
adde6300 AM |
311 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, avr_mcu->mach); |
312 | } | |
313 | ||
314 | int | |
315 | md_parse_option (c, arg) | |
316 | int c; | |
317 | char *arg; | |
318 | { | |
00d2865b | 319 | switch (c) |
adde6300 | 320 | { |
00d2865b NC |
321 | case OPTION_MMCU: |
322 | { | |
323 | int i; | |
324 | char *s = alloca (strlen (arg) + 1); | |
adde6300 | 325 | |
00d2865b NC |
326 | { |
327 | char *t = s; | |
328 | char *arg1 = arg; | |
329 | ||
330 | do | |
3882b010 | 331 | *t = TOLOWER (*arg1++); |
00d2865b NC |
332 | while (*t++); |
333 | } | |
334 | ||
335 | for (i = 0; mcu_types[i].name; ++i) | |
336 | if (strcmp (mcu_types[i].name, s) == 0) | |
337 | break; | |
adde6300 | 338 | |
00d2865b NC |
339 | if (!mcu_types[i].name) |
340 | { | |
341 | show_mcu_list (stderr); | |
342 | as_fatal (_("unknown MCU: %s\n"), arg); | |
343 | } | |
65aa24b6 | 344 | |
00d2865b NC |
345 | /* It is OK to redefine mcu type within the same avr[1-5] bfd machine |
346 | type - this for allows passing -mmcu=... via gcc ASM_SPEC as well | |
347 | as .arch ... in the asm output at the same time. */ | |
00d2865b NC |
348 | if (avr_mcu == &default_mcu || avr_mcu->mach == mcu_types[i].mach) |
349 | avr_mcu = &mcu_types[i]; | |
350 | else | |
351 | as_fatal (_("redefinition of mcu type `%s' to `%s'"), | |
352 | avr_mcu->name, mcu_types[i].name); | |
353 | return 1; | |
354 | } | |
355 | case OPTION_ALL_OPCODES: | |
356 | avr_opt.all_opcodes = 1; | |
357 | return 1; | |
358 | case OPTION_NO_SKIP_BUG: | |
359 | avr_opt.no_skip_bug = 1; | |
360 | return 1; | |
361 | case OPTION_NO_WRAP: | |
362 | avr_opt.no_wrap = 1; | |
adde6300 AM |
363 | return 1; |
364 | } | |
1dab94dd | 365 | |
adde6300 AM |
366 | return 0; |
367 | } | |
368 | ||
369 | symbolS * | |
c6a7ab1f | 370 | md_undefined_symbol (name) |
df136245 | 371 | char *name ATTRIBUTE_UNUSED; |
adde6300 AM |
372 | { |
373 | return 0; | |
374 | } | |
375 | ||
c6a7ab1f NC |
376 | /* Turn a string in input_line_pointer into a floating point constant |
377 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
378 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
379 | returned, or NULL on OK. */ | |
380 | ||
adde6300 AM |
381 | char * |
382 | md_atof (type, litP, sizeP) | |
383 | int type; | |
384 | char *litP; | |
385 | int *sizeP; | |
386 | { | |
387 | int prec; | |
388 | LITTLENUM_TYPE words[4]; | |
389 | LITTLENUM_TYPE *wordP; | |
390 | char *t; | |
391 | ||
392 | switch (type) | |
393 | { | |
394 | case 'f': | |
395 | prec = 2; | |
396 | break; | |
397 | case 'd': | |
398 | prec = 4; | |
399 | break; | |
400 | default: | |
401 | *sizeP = 0; | |
402 | return _("bad call to md_atof"); | |
403 | } | |
404 | ||
405 | t = atof_ieee (input_line_pointer, type, words); | |
406 | if (t) | |
407 | input_line_pointer = t; | |
408 | ||
409 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1dab94dd | 410 | |
adde6300 AM |
411 | /* This loop outputs the LITTLENUMs in REVERSE order. */ |
412 | for (wordP = words + prec - 1; prec--;) | |
413 | { | |
414 | md_number_to_chars (litP, (valueT) (*wordP--), sizeof (LITTLENUM_TYPE)); | |
415 | litP += sizeof (LITTLENUM_TYPE); | |
416 | } | |
1dab94dd | 417 | |
adde6300 AM |
418 | return NULL; |
419 | } | |
420 | ||
421 | void | |
422 | md_convert_frag (abfd, sec, fragP) | |
c6a7ab1f NC |
423 | bfd *abfd ATTRIBUTE_UNUSED; |
424 | asection *sec ATTRIBUTE_UNUSED; | |
425 | fragS *fragP ATTRIBUTE_UNUSED; | |
adde6300 AM |
426 | { |
427 | abort (); | |
428 | } | |
429 | ||
adde6300 AM |
430 | void |
431 | md_begin () | |
432 | { | |
df136245 | 433 | unsigned int i; |
adde6300 | 434 | struct avr_opcodes_s *opcode; |
c6a7ab1f | 435 | avr_hash = hash_new (); |
adde6300 AM |
436 | |
437 | /* Insert unique names into hash table. This hash table then provides a | |
438 | quick index to the first opcode with a particular name in the opcode | |
439 | table. */ | |
adde6300 AM |
440 | for (opcode = avr_opcodes; opcode->name; opcode++) |
441 | hash_insert (avr_hash, opcode->name, (char *) opcode); | |
442 | ||
443 | avr_mod_hash = hash_new (); | |
444 | ||
445 | for (i = 0; i < sizeof (exp_mod) / sizeof (exp_mod[0]); ++i) | |
c6a7ab1f NC |
446 | hash_insert (avr_mod_hash, EXP_MOD_NAME (i), (void *) (i + 10)); |
447 | ||
adde6300 AM |
448 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, avr_mcu->mach); |
449 | } | |
450 | ||
df136245 | 451 | /* Resolve STR as a constant expression and return the result. |
c6a7ab1f | 452 | If result greater than MAX then error. */ |
df136245 DC |
453 | |
454 | static unsigned int | |
455 | avr_get_constant (str, max) | |
c6a7ab1f | 456 | char *str; |
df136245 DC |
457 | int max; |
458 | { | |
459 | expressionS ex; | |
460 | str = skip_space (str); | |
461 | input_line_pointer = str; | |
462 | expression (&ex); | |
463 | ||
464 | if (ex.X_op != O_constant) | |
465 | as_bad (_("constant value required")); | |
466 | ||
467 | if (ex.X_add_number > max || ex.X_add_number < 0) | |
c6a7ab1f | 468 | as_bad (_("number must be less than %d"), max + 1); |
1dab94dd | 469 | |
df136245 DC |
470 | return ex.X_add_number; |
471 | } | |
472 | ||
df136245 | 473 | /* Parse instruction operands. |
c6a7ab1f | 474 | Return binary opcode. */ |
df136245 | 475 | |
adde6300 AM |
476 | static unsigned int |
477 | avr_operands (opcode, line) | |
478 | struct avr_opcodes_s *opcode; | |
479 | char **line; | |
480 | { | |
481 | char *op = opcode->constraints; | |
482 | unsigned int bin = opcode->bin_opcode; | |
483 | char *frag = frag_more (opcode->insn_size * 2); | |
484 | char *str = *line; | |
485 | int where = frag - frag_now->fr_literal; | |
c6a7ab1f | 486 | static unsigned int prev = 0; /* Previous opcode. */ |
adde6300 AM |
487 | |
488 | /* Opcode have operands. */ | |
489 | if (*op) | |
490 | { | |
491 | unsigned int reg1 = 0; | |
492 | unsigned int reg2 = 0; | |
493 | int reg1_present = 0; | |
494 | int reg2_present = 0; | |
495 | ||
496 | /* Parse first operand. */ | |
497 | if (REGISTER_P (*op)) | |
498 | reg1_present = 1; | |
499 | reg1 = avr_operand (opcode, where, op, &str); | |
500 | ++op; | |
501 | ||
502 | /* Parse second operand. */ | |
503 | if (*op) | |
504 | { | |
505 | if (*op == ',') | |
506 | ++op; | |
1dab94dd | 507 | |
adde6300 AM |
508 | if (*op == '=') |
509 | { | |
510 | reg2 = reg1; | |
511 | reg2_present = 1; | |
512 | } | |
513 | else | |
514 | { | |
515 | if (REGISTER_P (*op)) | |
516 | reg2_present = 1; | |
517 | ||
518 | str = skip_space (str); | |
519 | if (*str++ != ',') | |
00d2865b | 520 | as_bad (_("`,' required")); |
adde6300 AM |
521 | str = skip_space (str); |
522 | ||
523 | reg2 = avr_operand (opcode, where, op, &str); | |
524 | ||
525 | } | |
1dab94dd | 526 | |
adde6300 AM |
527 | if (reg1_present && reg2_present) |
528 | reg2 = (reg2 & 0xf) | ((reg2 << 5) & 0x200); | |
529 | else if (reg2_present) | |
530 | reg2 <<= 4; | |
531 | } | |
532 | if (reg1_present) | |
533 | reg1 <<= 4; | |
534 | bin |= reg1 | reg2; | |
535 | } | |
b170af93 | 536 | |
65b1d096 DC |
537 | /* Detect undefined combinations (like ld r31,Z+). */ |
538 | if (!avr_opt.all_opcodes && AVR_UNDEF_P (bin)) | |
539 | as_warn (_("undefined combination of operands")); | |
00d2865b | 540 | |
adde6300 AM |
541 | if (opcode->insn_size == 2) |
542 | { | |
00d2865b NC |
543 | /* Warn if the previous opcode was cpse/sbic/sbis/sbrc/sbrs |
544 | (AVR core bug, fixed in the newer devices). */ | |
545 | ||
23794b24 MM |
546 | if (!(avr_opt.no_skip_bug || |
547 | (avr_mcu->isa & (AVR_ISA_MUL | AVR_ISA_MOVW))) | |
65b1d096 DC |
548 | && AVR_SKIP_P (prev)) |
549 | as_warn (_("skipping two-word instruction")); | |
00d2865b | 550 | |
c6a7ab1f | 551 | bfd_putl32 ((bfd_vma) bin, frag); |
adde6300 AM |
552 | } |
553 | else | |
c6a7ab1f | 554 | bfd_putl16 ((bfd_vma) bin, frag); |
b170af93 DC |
555 | |
556 | prev = bin; | |
adde6300 AM |
557 | *line = str; |
558 | return bin; | |
559 | } | |
560 | ||
750bce0e NC |
561 | /* Parse for ldd/std offset */ |
562 | ||
563 | static void | |
564 | avr_offset_expression (expressionS *exp) | |
565 | { | |
566 | char *str = input_line_pointer; | |
567 | char *tmp; | |
568 | char op[8]; | |
569 | ||
570 | tmp = str; | |
571 | str = extract_word (str, op, sizeof (op)); | |
572 | ||
573 | input_line_pointer = tmp; | |
574 | expression (exp); | |
575 | ||
576 | /* Warn about expressions that fail to use lo8 (). */ | |
577 | if (exp->X_op == O_constant) | |
578 | { | |
579 | int x = exp->X_add_number; | |
580 | ||
581 | if (x < -255 || x > 255) | |
582 | as_warn (_("constant out of 8-bit range: %d"), x); | |
583 | } | |
584 | } | |
585 | ||
df136245 | 586 | /* Parse one instruction operand. |
c6a7ab1f NC |
587 | Return operand bitmask. Also fixups can be generated. */ |
588 | ||
adde6300 AM |
589 | static unsigned int |
590 | avr_operand (opcode, where, op, line) | |
591 | struct avr_opcodes_s *opcode; | |
592 | int where; | |
593 | char *op; | |
594 | char **line; | |
595 | { | |
adde6300 | 596 | expressionS op_expr; |
df136245 DC |
597 | unsigned int op_mask = 0; |
598 | char *str = skip_space (*line); | |
adde6300 | 599 | |
adde6300 AM |
600 | switch (*op) |
601 | { | |
602 | /* Any register operand. */ | |
603 | case 'w': | |
604 | case 'd': | |
605 | case 'r': | |
b170af93 DC |
606 | case 'a': |
607 | case 'v': | |
c6a7ab1f NC |
608 | if (*str == 'r' || *str == 'R') |
609 | { | |
610 | char r_name[20]; | |
1dab94dd | 611 | |
c6a7ab1f | 612 | str = extract_word (str, r_name, sizeof (r_name)); |
65b1d096 | 613 | op_mask = 0xff; |
3882b010 | 614 | if (ISDIGIT (r_name[1])) |
c6a7ab1f NC |
615 | { |
616 | if (r_name[2] == '\0') | |
617 | op_mask = r_name[1] - '0'; | |
618 | else if (r_name[1] != '0' | |
3882b010 | 619 | && ISDIGIT (r_name[2]) |
c6a7ab1f NC |
620 | && r_name[3] == '\0') |
621 | op_mask = (r_name[1] - '0') * 10 + r_name[2] - '0'; | |
622 | } | |
623 | } | |
624 | else | |
625 | { | |
626 | op_mask = avr_get_constant (str, 31); | |
627 | str = input_line_pointer; | |
628 | } | |
1dab94dd | 629 | |
c6a7ab1f NC |
630 | if (op_mask <= 31) |
631 | { | |
632 | switch (*op) | |
633 | { | |
634 | case 'a': | |
635 | if (op_mask < 16 || op_mask > 23) | |
636 | as_bad (_("register r16-r23 required")); | |
637 | op_mask -= 16; | |
638 | break; | |
1dab94dd | 639 | |
c6a7ab1f NC |
640 | case 'd': |
641 | if (op_mask < 16) | |
642 | as_bad (_("register number above 15 required")); | |
643 | op_mask -= 16; | |
644 | break; | |
1dab94dd | 645 | |
c6a7ab1f NC |
646 | case 'v': |
647 | if (op_mask & 1) | |
648 | as_bad (_("even register number required")); | |
649 | op_mask >>= 1; | |
650 | break; | |
1dab94dd | 651 | |
c6a7ab1f | 652 | case 'w': |
65b1d096 | 653 | if ((op_mask & 1) || op_mask < 24) |
c6a7ab1f | 654 | as_bad (_("register r24, r26, r28 or r30 required")); |
65b1d096 | 655 | op_mask = (op_mask - 24) >> 1; |
c6a7ab1f NC |
656 | break; |
657 | } | |
658 | break; | |
659 | } | |
660 | as_bad (_("register name or number from 0 to 31 required")); | |
adde6300 AM |
661 | break; |
662 | ||
663 | case 'e': | |
664 | { | |
665 | char c; | |
1dab94dd | 666 | |
adde6300 AM |
667 | if (*str == '-') |
668 | { | |
c6a7ab1f | 669 | str = skip_space (str + 1); |
adde6300 AM |
670 | op_mask = 0x1002; |
671 | } | |
3882b010 | 672 | c = TOLOWER (*str); |
adde6300 AM |
673 | if (c == 'x') |
674 | op_mask |= 0x100c; | |
675 | else if (c == 'y') | |
676 | op_mask |= 0x8; | |
677 | else if (c != 'z') | |
00d2865b | 678 | as_bad (_("pointer register (X, Y or Z) required")); |
adde6300 | 679 | |
c6a7ab1f | 680 | str = skip_space (str + 1); |
adde6300 AM |
681 | if (*str == '+') |
682 | { | |
683 | ++str; | |
684 | if (op_mask & 2) | |
00d2865b | 685 | as_bad (_("cannot both predecrement and postincrement")); |
adde6300 AM |
686 | op_mask |= 0x1001; |
687 | } | |
e38c9cc2 | 688 | |
1188e082 | 689 | /* avr1 can do "ld r,Z" and "st Z,r" but no other pointer |
e38c9cc2 | 690 | registers, no predecrement, no postincrement. */ |
00d2865b NC |
691 | if (!avr_opt.all_opcodes && (op_mask & 0x100F) |
692 | && !(avr_mcu->isa & AVR_ISA_SRAM)) | |
693 | as_bad (_("addressing mode not supported")); | |
adde6300 AM |
694 | } |
695 | break; | |
696 | ||
b170af93 | 697 | case 'z': |
c6a7ab1f NC |
698 | if (*str == '-') |
699 | as_bad (_("can't predecrement")); | |
1dab94dd | 700 | |
c6a7ab1f NC |
701 | if (! (*str == 'z' || *str == 'Z')) |
702 | as_bad (_("pointer register Z required")); | |
1dab94dd | 703 | |
c6a7ab1f NC |
704 | str = skip_space (str + 1); |
705 | ||
706 | if (*str == '+') | |
707 | { | |
708 | ++str; | |
709 | op_mask |= 1; | |
710 | } | |
b170af93 DC |
711 | break; |
712 | ||
adde6300 AM |
713 | case 'b': |
714 | { | |
3882b010 | 715 | char c = TOLOWER (*str++); |
1dab94dd | 716 | |
adde6300 AM |
717 | if (c == 'y') |
718 | op_mask |= 0x8; | |
719 | else if (c != 'z') | |
00d2865b | 720 | as_bad (_("pointer register (Y or Z) required")); |
adde6300 AM |
721 | str = skip_space (str); |
722 | if (*str++ == '+') | |
723 | { | |
750bce0e NC |
724 | input_line_pointer = str; |
725 | avr_offset_expression (& op_expr); | |
adde6300 | 726 | str = input_line_pointer; |
750bce0e NC |
727 | fix_new_exp (frag_now, where, 3, |
728 | &op_expr, FALSE, BFD_RELOC_AVR_6); | |
adde6300 AM |
729 | } |
730 | } | |
731 | break; | |
732 | ||
733 | case 'h': | |
c6a7ab1f NC |
734 | str = parse_exp (str, &op_expr); |
735 | fix_new_exp (frag_now, where, opcode->insn_size * 2, | |
b34976b6 | 736 | &op_expr, FALSE, BFD_RELOC_AVR_CALL); |
adde6300 AM |
737 | break; |
738 | ||
739 | case 'L': | |
c6a7ab1f NC |
740 | str = parse_exp (str, &op_expr); |
741 | fix_new_exp (frag_now, where, opcode->insn_size * 2, | |
b34976b6 | 742 | &op_expr, TRUE, BFD_RELOC_AVR_13_PCREL); |
adde6300 AM |
743 | break; |
744 | ||
745 | case 'l': | |
c6a7ab1f NC |
746 | str = parse_exp (str, &op_expr); |
747 | fix_new_exp (frag_now, where, opcode->insn_size * 2, | |
b34976b6 | 748 | &op_expr, TRUE, BFD_RELOC_AVR_7_PCREL); |
adde6300 AM |
749 | break; |
750 | ||
751 | case 'i': | |
c6a7ab1f NC |
752 | str = parse_exp (str, &op_expr); |
753 | fix_new_exp (frag_now, where + 2, opcode->insn_size * 2, | |
b34976b6 | 754 | &op_expr, FALSE, BFD_RELOC_16); |
adde6300 AM |
755 | break; |
756 | ||
757 | case 'M': | |
758 | { | |
759 | bfd_reloc_code_real_type r_type; | |
1dab94dd | 760 | |
c6a7ab1f NC |
761 | input_line_pointer = str; |
762 | r_type = avr_ldi_expression (&op_expr); | |
763 | str = input_line_pointer; | |
adde6300 | 764 | fix_new_exp (frag_now, where, 3, |
b34976b6 | 765 | &op_expr, FALSE, r_type); |
adde6300 AM |
766 | } |
767 | break; | |
768 | ||
769 | case 'n': | |
770 | { | |
771 | unsigned int x; | |
1dab94dd | 772 | |
adde6300 AM |
773 | x = ~avr_get_constant (str, 255); |
774 | str = input_line_pointer; | |
775 | op_mask |= (x & 0xf) | ((x << 4) & 0xf00); | |
776 | } | |
777 | break; | |
778 | ||
779 | case 'K': | |
750bce0e NC |
780 | input_line_pointer = str; |
781 | avr_offset_expression (& op_expr); | |
782 | str = input_line_pointer; | |
783 | fix_new_exp (frag_now, where, 3, | |
784 | & op_expr, FALSE, BFD_RELOC_AVR_6_ADIW); | |
adde6300 AM |
785 | break; |
786 | ||
787 | case 'S': | |
788 | case 's': | |
789 | { | |
790 | unsigned int x; | |
1dab94dd | 791 | |
adde6300 AM |
792 | x = avr_get_constant (str, 7); |
793 | str = input_line_pointer; | |
794 | if (*op == 'S') | |
795 | x <<= 4; | |
796 | op_mask |= x; | |
797 | } | |
798 | break; | |
799 | ||
800 | case 'P': | |
801 | { | |
802 | unsigned int x; | |
1dab94dd | 803 | |
adde6300 AM |
804 | x = avr_get_constant (str, 63); |
805 | str = input_line_pointer; | |
806 | op_mask |= (x & 0xf) | ((x & 0x30) << 5); | |
807 | } | |
808 | break; | |
809 | ||
810 | case 'p': | |
811 | { | |
812 | unsigned int x; | |
1dab94dd | 813 | |
adde6300 AM |
814 | x = avr_get_constant (str, 31); |
815 | str = input_line_pointer; | |
816 | op_mask |= x << 3; | |
817 | } | |
818 | break; | |
1dab94dd | 819 | |
1188e082 DC |
820 | case '?': |
821 | break; | |
1dab94dd | 822 | |
adde6300 | 823 | default: |
00d2865b | 824 | as_bad (_("unknown constraint `%c'"), *op); |
adde6300 | 825 | } |
1dab94dd | 826 | |
adde6300 AM |
827 | *line = str; |
828 | return op_mask; | |
829 | } | |
830 | ||
831 | /* GAS will call this function for each section at the end of the assembly, | |
832 | to permit the CPU backend to adjust the alignment of a section. */ | |
c6a7ab1f | 833 | |
adde6300 AM |
834 | valueT |
835 | md_section_align (seg, addr) | |
836 | asection *seg; | |
837 | valueT addr; | |
838 | { | |
839 | int align = bfd_get_section_alignment (stdoutput, seg); | |
840 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
841 | } | |
842 | ||
843 | /* If you define this macro, it should return the offset between the | |
844 | address of a PC relative fixup and the position from which the PC | |
845 | relative adjustment should be made. On many processors, the base | |
846 | of a PC relative instruction is the next instruction, so this | |
847 | macro would return the length of an instruction. */ | |
c6a7ab1f | 848 | |
adde6300 AM |
849 | long |
850 | md_pcrel_from_section (fixp, sec) | |
851 | fixS *fixp; | |
852 | segT sec; | |
853 | { | |
c6a7ab1f | 854 | if (fixp->fx_addsy != (symbolS *) NULL |
adde6300 AM |
855 | && (!S_IS_DEFINED (fixp->fx_addsy) |
856 | || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) | |
857 | return 0; | |
1dab94dd | 858 | |
adde6300 AM |
859 | return fixp->fx_frag->fr_address + fixp->fx_where; |
860 | } | |
861 | ||
862 | /* GAS will call this for each fixup. It should store the correct | |
c6a7ab1f NC |
863 | value in the object file. */ |
864 | ||
94f592af | 865 | void |
55cf6793 | 866 | md_apply_fix (fixP, valP, seg) |
94f592af NC |
867 | fixS *fixP; |
868 | valueT * valP; | |
adde6300 AM |
869 | segT seg; |
870 | { | |
871 | unsigned char *where; | |
872 | unsigned long insn; | |
a161fe53 | 873 | long value = *valP; |
adde6300 | 874 | |
94f592af NC |
875 | if (fixP->fx_addsy == (symbolS *) NULL) |
876 | fixP->fx_done = 1; | |
877 | ||
87733541 AM |
878 | else if (fixP->fx_pcrel) |
879 | { | |
880 | segT s = S_GET_SEGMENT (fixP->fx_addsy); | |
881 | ||
882 | if (s == seg || s == absolute_section) | |
883 | { | |
884 | value += S_GET_VALUE (fixP->fx_addsy); | |
885 | fixP->fx_done = 1; | |
886 | } | |
887 | } | |
888 | ||
a161fe53 AM |
889 | /* We don't actually support subtracting a symbol. */ |
890 | if (fixP->fx_subsy != (symbolS *) NULL) | |
891 | as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); | |
1dab94dd | 892 | |
94f592af | 893 | switch (fixP->fx_r_type) |
adde6300 AM |
894 | { |
895 | default: | |
94f592af | 896 | fixP->fx_no_overflow = 1; |
adde6300 AM |
897 | break; |
898 | case BFD_RELOC_AVR_7_PCREL: | |
899 | case BFD_RELOC_AVR_13_PCREL: | |
900 | case BFD_RELOC_32: | |
901 | case BFD_RELOC_16: | |
902 | case BFD_RELOC_AVR_CALL: | |
903 | break; | |
904 | } | |
905 | ||
94f592af | 906 | if (fixP->fx_done) |
adde6300 AM |
907 | { |
908 | /* Fetch the instruction, insert the fully resolved operand | |
909 | value, and stuff the instruction back again. */ | |
2132e3a3 | 910 | where = (unsigned char *) fixP->fx_frag->fr_literal + fixP->fx_where; |
adde6300 AM |
911 | insn = bfd_getl16 (where); |
912 | ||
94f592af | 913 | switch (fixP->fx_r_type) |
adde6300 AM |
914 | { |
915 | case BFD_RELOC_AVR_7_PCREL: | |
916 | if (value & 1) | |
94f592af | 917 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 | 918 | _("odd address operand: %ld"), value); |
1dab94dd | 919 | |
adde6300 AM |
920 | /* Instruction addresses are always right-shifted by 1. */ |
921 | value >>= 1; | |
922 | --value; /* Correct PC. */ | |
1dab94dd | 923 | |
adde6300 | 924 | if (value < -64 || value > 63) |
94f592af | 925 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 AM |
926 | _("operand out of range: %ld"), value); |
927 | value = (value << 3) & 0x3f8; | |
928 | bfd_putl16 ((bfd_vma) (value | insn), where); | |
929 | break; | |
930 | ||
931 | case BFD_RELOC_AVR_13_PCREL: | |
932 | if (value & 1) | |
94f592af | 933 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 | 934 | _("odd address operand: %ld"), value); |
1dab94dd | 935 | |
adde6300 AM |
936 | /* Instruction addresses are always right-shifted by 1. */ |
937 | value >>= 1; | |
938 | --value; /* Correct PC. */ | |
adde6300 AM |
939 | |
940 | if (value < -2048 || value > 2047) | |
941 | { | |
65aa24b6 | 942 | /* No wrap for devices with >8K of program memory. */ |
00d2865b | 943 | if ((avr_mcu->isa & AVR_ISA_MEGA) || avr_opt.no_wrap) |
94f592af | 944 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 AM |
945 | _("operand out of range: %ld"), value); |
946 | } | |
947 | ||
948 | value &= 0xfff; | |
949 | bfd_putl16 ((bfd_vma) (value | insn), where); | |
950 | break; | |
951 | ||
952 | case BFD_RELOC_32: | |
953 | bfd_putl16 ((bfd_vma) value, where); | |
954 | break; | |
955 | ||
956 | case BFD_RELOC_16: | |
957 | bfd_putl16 ((bfd_vma) value, where); | |
958 | break; | |
959 | ||
960 | case BFD_RELOC_AVR_16_PM: | |
c6a7ab1f | 961 | bfd_putl16 ((bfd_vma) (value >> 1), where); |
adde6300 AM |
962 | break; |
963 | ||
750bce0e NC |
964 | case BFD_RELOC_AVR_LDI: |
965 | if (value > 255) | |
966 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
967 | _("operand out of range: %ld"), value); | |
968 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value), where); | |
969 | break; | |
970 | ||
971 | case BFD_RELOC_AVR_6: | |
972 | if ((value > 63) || (value < 0)) | |
973 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
974 | _("operand out of range: %ld"), value); | |
975 | bfd_putl16 ((bfd_vma) insn | ((value & 7) | ((value & (3 << 3)) << 7) | ((value & (1 << 5)) << 8)), where); | |
976 | break; | |
977 | ||
978 | case BFD_RELOC_AVR_6_ADIW: | |
979 | if ((value > 63) || (value < 0)) | |
980 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
981 | _("operand out of range: %ld"), value); | |
982 | bfd_putl16 ((bfd_vma) insn | (value & 0xf) | ((value & 0x30) << 2), where); | |
983 | break; | |
984 | ||
adde6300 AM |
985 | case BFD_RELOC_AVR_LO8_LDI: |
986 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value), where); | |
987 | break; | |
988 | ||
989 | case -BFD_RELOC_AVR_LO8_LDI: | |
990 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 16), where); | |
991 | break; | |
992 | ||
993 | case BFD_RELOC_AVR_HI8_LDI: | |
994 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 8), where); | |
995 | break; | |
996 | ||
997 | case -BFD_RELOC_AVR_HI8_LDI: | |
998 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 24), where); | |
999 | break; | |
1000 | ||
1001 | case BFD_RELOC_AVR_HH8_LDI: | |
1002 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 16), where); | |
1003 | break; | |
1004 | ||
1005 | case BFD_RELOC_AVR_LO8_LDI_NEG: | |
1006 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value), where); | |
1007 | break; | |
1008 | ||
1009 | case -BFD_RELOC_AVR_LO8_LDI_NEG: | |
1010 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 16), where); | |
1011 | break; | |
1012 | ||
1013 | case BFD_RELOC_AVR_HI8_LDI_NEG: | |
1014 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 8), where); | |
1015 | break; | |
1016 | ||
1017 | case -BFD_RELOC_AVR_HI8_LDI_NEG: | |
1018 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 24), where); | |
1019 | break; | |
1020 | ||
1021 | case BFD_RELOC_AVR_HH8_LDI_NEG: | |
1022 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 16), where); | |
1023 | break; | |
1024 | ||
1025 | case BFD_RELOC_AVR_LO8_LDI_PM: | |
1026 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 1), where); | |
1027 | break; | |
1028 | ||
1029 | case BFD_RELOC_AVR_HI8_LDI_PM: | |
1030 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 9), where); | |
1031 | break; | |
1032 | ||
1033 | case BFD_RELOC_AVR_HH8_LDI_PM: | |
1034 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 17), where); | |
1035 | break; | |
1036 | ||
1037 | case BFD_RELOC_AVR_LO8_LDI_PM_NEG: | |
1038 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 1), where); | |
1039 | break; | |
1040 | ||
1041 | case BFD_RELOC_AVR_HI8_LDI_PM_NEG: | |
1042 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 9), where); | |
1043 | break; | |
1044 | ||
1045 | case BFD_RELOC_AVR_HH8_LDI_PM_NEG: | |
1046 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 17), where); | |
1047 | break; | |
1048 | ||
1049 | case BFD_RELOC_AVR_CALL: | |
1050 | { | |
1051 | unsigned long x; | |
1dab94dd | 1052 | |
adde6300 AM |
1053 | x = bfd_getl16 (where); |
1054 | if (value & 1) | |
94f592af | 1055 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 AM |
1056 | _("odd address operand: %ld"), value); |
1057 | value >>= 1; | |
1058 | x |= ((value & 0x10000) | ((value << 3) & 0x1f00000)) >> 16; | |
1059 | bfd_putl16 ((bfd_vma) x, where); | |
c6a7ab1f | 1060 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); |
adde6300 AM |
1061 | } |
1062 | break; | |
1063 | ||
1064 | default: | |
c6a7ab1f | 1065 | as_fatal (_("line %d: unknown relocation type: 0x%x"), |
94f592af | 1066 | fixP->fx_line, fixP->fx_r_type); |
adde6300 AM |
1067 | break; |
1068 | } | |
1069 | } | |
1070 | else | |
1071 | { | |
94f592af | 1072 | switch (fixP->fx_r_type) |
adde6300 AM |
1073 | { |
1074 | case -BFD_RELOC_AVR_HI8_LDI_NEG: | |
1075 | case -BFD_RELOC_AVR_HI8_LDI: | |
1076 | case -BFD_RELOC_AVR_LO8_LDI_NEG: | |
1077 | case -BFD_RELOC_AVR_LO8_LDI: | |
94f592af | 1078 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 | 1079 | _("only constant expression allowed")); |
94f592af | 1080 | fixP->fx_done = 1; |
adde6300 AM |
1081 | break; |
1082 | default: | |
1083 | break; | |
1084 | } | |
adde6300 | 1085 | } |
adde6300 AM |
1086 | } |
1087 | ||
adde6300 AM |
1088 | /* A `BFD_ASSEMBLER' GAS will call this to generate a reloc. GAS |
1089 | will pass the resulting reloc to `bfd_install_relocation'. This | |
1090 | currently works poorly, as `bfd_install_relocation' often does the | |
1091 | wrong thing, and instances of `tc_gen_reloc' have been written to | |
1092 | work around the problems, which in turns makes it difficult to fix | |
c6a7ab1f | 1093 | `bfd_install_relocation'. */ |
adde6300 AM |
1094 | |
1095 | /* If while processing a fixup, a reloc really needs to be created | |
1096 | then it is done here. */ | |
1097 | ||
1098 | arelent * | |
1099 | tc_gen_reloc (seg, fixp) | |
df136245 | 1100 | asection *seg ATTRIBUTE_UNUSED; |
adde6300 AM |
1101 | fixS *fixp; |
1102 | { | |
1103 | arelent *reloc; | |
1104 | ||
1105 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
1106 | ||
1107 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
1108 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
1109 | ||
1110 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
1111 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
1112 | if (reloc->howto == (reloc_howto_type *) NULL) | |
1113 | { | |
1114 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
c6a7ab1f NC |
1115 | _("reloc %d not supported by object file format"), |
1116 | (int) fixp->fx_r_type); | |
adde6300 AM |
1117 | return NULL; |
1118 | } | |
1119 | ||
1120 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
1121 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
1122 | reloc->address = fixp->fx_offset; | |
1123 | ||
1124 | reloc->addend = fixp->fx_offset; | |
1125 | ||
1126 | return reloc; | |
1127 | } | |
1128 | ||
adde6300 AM |
1129 | void |
1130 | md_assemble (str) | |
1131 | char *str; | |
1132 | { | |
c6a7ab1f | 1133 | struct avr_opcodes_s *opcode; |
adde6300 AM |
1134 | char op[11]; |
1135 | ||
c6a7ab1f | 1136 | str = skip_space (extract_word (str, op, sizeof (op))); |
adde6300 AM |
1137 | |
1138 | if (!op[0]) | |
00d2865b | 1139 | as_bad (_("can't find opcode ")); |
adde6300 AM |
1140 | |
1141 | opcode = (struct avr_opcodes_s *) hash_find (avr_hash, op); | |
1142 | ||
1143 | if (opcode == NULL) | |
1144 | { | |
00d2865b | 1145 | as_bad (_("unknown opcode `%s'"), op); |
adde6300 AM |
1146 | return; |
1147 | } | |
1148 | ||
b170af93 | 1149 | /* Special case for opcodes with optional operands (lpm, elpm) - |
1188e082 | 1150 | version with operands exists in avr_opcodes[] in the next entry. */ |
c6a7ab1f | 1151 | |
1188e082 DC |
1152 | if (*str && *opcode->constraints == '?') |
1153 | ++opcode; | |
b170af93 | 1154 | |
00d2865b NC |
1155 | if (!avr_opt.all_opcodes && (opcode->isa & avr_mcu->isa) != opcode->isa) |
1156 | as_bad (_("illegal opcode %s for mcu %s"), opcode->name, avr_mcu->name); | |
adde6300 AM |
1157 | |
1158 | /* We used to set input_line_pointer to the result of get_operands, | |
1159 | but that is wrong. Our caller assumes we don't change it. */ | |
1160 | { | |
1161 | char *t = input_line_pointer; | |
1162 | avr_operands (opcode, &str); | |
b170af93 | 1163 | if (*skip_space (str)) |
00d2865b | 1164 | as_bad (_("garbage at end of line")); |
adde6300 AM |
1165 | input_line_pointer = t; |
1166 | } | |
1167 | } | |
1168 | ||
1169 | /* Parse ordinary expression. */ | |
c6a7ab1f | 1170 | |
adde6300 AM |
1171 | static char * |
1172 | parse_exp (s, op) | |
1173 | char *s; | |
c6a7ab1f | 1174 | expressionS *op; |
adde6300 AM |
1175 | { |
1176 | input_line_pointer = s; | |
1177 | expression (op); | |
1178 | if (op->X_op == O_absent) | |
1179 | as_bad (_("missing operand")); | |
1180 | return input_line_pointer; | |
1181 | } | |
1182 | ||
adde6300 AM |
1183 | /* Parse special expressions (needed for LDI command): |
1184 | xx8 (address) | |
1185 | xx8 (-address) | |
1186 | pm_xx8 (address) | |
1187 | pm_xx8 (-address) | |
c6a7ab1f NC |
1188 | where xx is: hh, hi, lo. */ |
1189 | ||
adde6300 AM |
1190 | static bfd_reloc_code_real_type |
1191 | avr_ldi_expression (exp) | |
1192 | expressionS *exp; | |
1193 | { | |
1194 | char *str = input_line_pointer; | |
1195 | char *tmp; | |
1196 | char op[8]; | |
1197 | int mod; | |
1198 | tmp = str; | |
1199 | ||
1200 | str = extract_word (str, op, sizeof (op)); | |
1dab94dd | 1201 | |
adde6300 AM |
1202 | if (op[0]) |
1203 | { | |
1204 | mod = (int) hash_find (avr_mod_hash, op); | |
1dab94dd | 1205 | |
adde6300 AM |
1206 | if (mod) |
1207 | { | |
1208 | int closes = 0; | |
1dab94dd | 1209 | |
adde6300 AM |
1210 | mod -= 10; |
1211 | str = skip_space (str); | |
1dab94dd | 1212 | |
adde6300 AM |
1213 | if (*str == '(') |
1214 | { | |
1215 | int neg_p = 0; | |
1dab94dd | 1216 | |
adde6300 | 1217 | ++str; |
1dab94dd | 1218 | |
adde6300 AM |
1219 | if (strncmp ("pm(", str, 3) == 0 |
1220 | || strncmp ("-(pm(", str, 5) == 0) | |
1221 | { | |
c6a7ab1f | 1222 | if (HAVE_PM_P (mod)) |
adde6300 AM |
1223 | { |
1224 | ++mod; | |
1225 | ++closes; | |
1226 | } | |
1227 | else | |
00d2865b | 1228 | as_bad (_("illegal expression")); |
1dab94dd | 1229 | |
adde6300 AM |
1230 | if (*str == '-') |
1231 | { | |
1232 | neg_p = 1; | |
1233 | ++closes; | |
1234 | str += 5; | |
1235 | } | |
1236 | else | |
1237 | str += 3; | |
1238 | } | |
1dab94dd | 1239 | |
adde6300 AM |
1240 | if (*str == '-' && *(str + 1) == '(') |
1241 | { | |
1242 | neg_p ^= 1; | |
1243 | ++closes; | |
1244 | str += 2; | |
1245 | } | |
1dab94dd | 1246 | |
adde6300 AM |
1247 | input_line_pointer = str; |
1248 | expression (exp); | |
1dab94dd | 1249 | |
adde6300 AM |
1250 | do |
1251 | { | |
1252 | if (*input_line_pointer != ')') | |
1253 | { | |
00d2865b | 1254 | as_bad (_("`)' required")); |
adde6300 AM |
1255 | break; |
1256 | } | |
1257 | input_line_pointer++; | |
1258 | } | |
1259 | while (closes--); | |
1dab94dd | 1260 | |
adde6300 AM |
1261 | return neg_p ? EXP_MOD_NEG_RELOC (mod) : EXP_MOD_RELOC (mod); |
1262 | } | |
1263 | } | |
1264 | } | |
1dab94dd | 1265 | |
adde6300 AM |
1266 | input_line_pointer = tmp; |
1267 | expression (exp); | |
00d2865b | 1268 | |
c6a7ab1f | 1269 | /* Warn about expressions that fail to use lo8 (). */ |
00d2865b NC |
1270 | if (exp->X_op == O_constant) |
1271 | { | |
1272 | int x = exp->X_add_number; | |
1273 | if (x < -255 || x > 255) | |
1274 | as_warn (_("constant out of 8-bit range: %d"), x); | |
1275 | } | |
00d2865b | 1276 | |
750bce0e | 1277 | return BFD_RELOC_AVR_LDI; |
adde6300 AM |
1278 | } |
1279 | ||
1280 | /* Flag to pass `pm' mode between `avr_parse_cons_expression' and | |
c6a7ab1f | 1281 | `avr_cons_fix_new'. */ |
adde6300 AM |
1282 | static int exp_mod_pm = 0; |
1283 | ||
1284 | /* Parse special CONS expression: pm (expression) | |
1285 | which is used for addressing to a program memory. | |
c6a7ab1f NC |
1286 | Relocation: BFD_RELOC_AVR_16_PM. */ |
1287 | ||
adde6300 AM |
1288 | void |
1289 | avr_parse_cons_expression (exp, nbytes) | |
1290 | expressionS *exp; | |
1291 | int nbytes; | |
1292 | { | |
c6a7ab1f | 1293 | char *tmp; |
adde6300 AM |
1294 | |
1295 | exp_mod_pm = 0; | |
1296 | ||
1297 | tmp = input_line_pointer = skip_space (input_line_pointer); | |
1298 | ||
1299 | if (nbytes == 2) | |
1300 | { | |
c6a7ab1f | 1301 | char *pm_name = "pm"; |
adde6300 | 1302 | int len = strlen (pm_name); |
1dab94dd | 1303 | |
adde6300 AM |
1304 | if (strncasecmp (input_line_pointer, pm_name, len) == 0) |
1305 | { | |
1306 | input_line_pointer = skip_space (input_line_pointer + len); | |
1dab94dd | 1307 | |
adde6300 AM |
1308 | if (*input_line_pointer == '(') |
1309 | { | |
1310 | input_line_pointer = skip_space (input_line_pointer + 1); | |
1311 | exp_mod_pm = 1; | |
1312 | expression (exp); | |
1dab94dd | 1313 | |
adde6300 AM |
1314 | if (*input_line_pointer == ')') |
1315 | ++input_line_pointer; | |
1316 | else | |
1317 | { | |
00d2865b | 1318 | as_bad (_("`)' required")); |
adde6300 AM |
1319 | exp_mod_pm = 0; |
1320 | } | |
1dab94dd | 1321 | |
adde6300 AM |
1322 | return; |
1323 | } | |
1dab94dd | 1324 | |
adde6300 AM |
1325 | input_line_pointer = tmp; |
1326 | } | |
1327 | } | |
1dab94dd | 1328 | |
adde6300 AM |
1329 | expression (exp); |
1330 | } | |
1331 | ||
1332 | void | |
c6a7ab1f | 1333 | avr_cons_fix_new (frag, where, nbytes, exp) |
adde6300 AM |
1334 | fragS *frag; |
1335 | int where; | |
1336 | int nbytes; | |
1337 | expressionS *exp; | |
1338 | { | |
1339 | if (exp_mod_pm == 0) | |
1340 | { | |
1341 | if (nbytes == 2) | |
b34976b6 | 1342 | fix_new_exp (frag, where, nbytes, exp, FALSE, BFD_RELOC_16); |
adde6300 | 1343 | else if (nbytes == 4) |
b34976b6 | 1344 | fix_new_exp (frag, where, nbytes, exp, FALSE, BFD_RELOC_32); |
adde6300 | 1345 | else |
00d2865b | 1346 | as_bad (_("illegal %srelocation size: %d"), "", nbytes); |
adde6300 AM |
1347 | } |
1348 | else | |
1349 | { | |
1350 | if (nbytes == 2) | |
b34976b6 | 1351 | fix_new_exp (frag, where, nbytes, exp, FALSE, BFD_RELOC_AVR_16_PM); |
adde6300 | 1352 | else |
00d2865b | 1353 | as_bad (_("illegal %srelocation size: %d"), "`pm' ", nbytes); |
adde6300 AM |
1354 | exp_mod_pm = 0; |
1355 | } | |
1356 | } |