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Commit | Line | Data |
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adde6300 AM |
1 | /* tc-avr.c -- Assembler code for the ATMEL AVR |
2 | ||
d669d37f | 3 | Copyright 1999, 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008 |
2132e3a3 | 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 | |
ec2655a6 | 11 | the Free Software Foundation; either version 3, or (at your option) |
adde6300 AM |
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 | 23 | |
adde6300 | 24 | #include "as.h" |
3882b010 | 25 | #include "safe-ctype.h" |
adde6300 AM |
26 | #include "subsegs.h" |
27 | ||
1188e082 DC |
28 | struct avr_opcodes_s |
29 | { | |
dc191a8f NC |
30 | char * name; |
31 | char * constraints; | |
32 | int insn_size; /* In words. */ | |
33 | int isa; | |
34 | unsigned int bin_opcode; | |
1188e082 DC |
35 | }; |
36 | ||
37 | #define AVR_INSN(NAME, CONSTR, OPCODE, SIZE, ISA, BIN) \ | |
38 | {#NAME, CONSTR, SIZE, ISA, BIN}, | |
39 | ||
40 | struct avr_opcodes_s avr_opcodes[] = | |
41 | { | |
42 | #include "opcode/avr.h" | |
43 | {NULL, NULL, 0, 0, 0} | |
44 | }; | |
45 | ||
adde6300 AM |
46 | const char comment_chars[] = ";"; |
47 | const char line_comment_chars[] = "#"; | |
48 | const char line_separator_chars[] = "$"; | |
49 | ||
adde6300 AM |
50 | const char *md_shortopts = "m:"; |
51 | struct mcu_type_s | |
52 | { | |
53 | char *name; | |
54 | int isa; | |
55 | int mach; | |
56 | }; | |
57 | ||
1f8ae5e6 DC |
58 | /* XXX - devices that don't seem to exist (renamed, replaced with larger |
59 | ones, or planned but never produced), left here for compatibility. | |
60 | TODO: hide them in show_mcu_list output? */ | |
61 | ||
adde6300 AM |
62 | static struct mcu_type_s mcu_types[] = |
63 | { | |
28c9d252 NC |
64 | {"avr1", AVR_ISA_TINY1, bfd_mach_avr1}, |
65 | {"avr2", AVR_ISA_TINY2, bfd_mach_avr2}, | |
982b62a0 | 66 | {"avr3", AVR_ISA_AVR3, bfd_mach_avr3}, |
28c9d252 NC |
67 | {"avr4", AVR_ISA_M8, bfd_mach_avr4}, |
68 | {"avr5", AVR_ISA_ALL, bfd_mach_avr5}, | |
69 | {"avr6", AVR_ISA_ALL, bfd_mach_avr6}, | |
70 | {"at90s1200", AVR_ISA_1200, bfd_mach_avr1}, | |
28c9d252 NC |
71 | {"attiny11", AVR_ISA_TINY1, bfd_mach_avr1}, |
72 | {"attiny12", AVR_ISA_TINY1, bfd_mach_avr1}, | |
73 | {"attiny15", AVR_ISA_TINY1, bfd_mach_avr1}, | |
74 | {"attiny28", AVR_ISA_TINY1, bfd_mach_avr1}, | |
75 | {"at90s2313", AVR_ISA_2xxx, bfd_mach_avr2}, | |
76 | {"at90s2323", AVR_ISA_2xxx, bfd_mach_avr2}, | |
77 | {"at90s2333", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 4433 */ | |
78 | {"at90s2343", AVR_ISA_2xxx, bfd_mach_avr2}, | |
79 | {"attiny22", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 2343 */ | |
d669d37f | 80 | {"attiny26", AVR_ISA_2xxe, bfd_mach_avr2}, |
28c9d252 NC |
81 | {"at90s4433", AVR_ISA_2xxx, bfd_mach_avr2}, |
82 | {"at90s4414", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8515 */ | |
83 | {"at90s4434", AVR_ISA_2xxx, bfd_mach_avr2}, /* XXX -> 8535 */ | |
84 | {"at90s8515", AVR_ISA_2xxx, bfd_mach_avr2}, | |
85 | {"at90s8535", AVR_ISA_2xxx, bfd_mach_avr2}, | |
86 | {"at90c8534", AVR_ISA_2xxx, bfd_mach_avr2}, | |
2b1ed17b | 87 | {"at86rf401", AVR_ISA_RF401, bfd_mach_avr2}, |
28c9d252 NC |
88 | {"attiny13", AVR_ISA_TINY2, bfd_mach_avr2}, |
89 | {"attiny2313", AVR_ISA_TINY2, bfd_mach_avr2}, | |
90 | {"attiny261", AVR_ISA_TINY2, bfd_mach_avr2}, | |
91 | {"attiny461", AVR_ISA_TINY2, bfd_mach_avr2}, | |
92 | {"attiny861", AVR_ISA_TINY2, bfd_mach_avr2}, | |
93 | {"attiny24", AVR_ISA_TINY2, bfd_mach_avr2}, | |
94 | {"attiny44", AVR_ISA_TINY2, bfd_mach_avr2}, | |
95 | {"attiny84", AVR_ISA_TINY2, bfd_mach_avr2}, | |
96 | {"attiny25", AVR_ISA_TINY2, bfd_mach_avr2}, | |
97 | {"attiny45", AVR_ISA_TINY2, bfd_mach_avr2}, | |
98 | {"attiny85", AVR_ISA_TINY2, bfd_mach_avr2}, | |
922f0bac NC |
99 | {"attiny43u", AVR_ISA_TINY2, bfd_mach_avr2}, |
100 | {"attiny48", AVR_ISA_TINY2, bfd_mach_avr2}, | |
71fe8fb3 | 101 | {"attiny88", AVR_ISA_TINY2, bfd_mach_avr2}, |
28c9d252 NC |
102 | {"atmega103", AVR_ISA_M103, bfd_mach_avr3}, |
103 | {"at43usb320", AVR_ISA_M103, bfd_mach_avr3}, | |
104 | {"at43usb355", AVR_ISA_M603, bfd_mach_avr3}, | |
105 | {"at76c711", AVR_ISA_M603, bfd_mach_avr3}, | |
982b62a0 EW |
106 | {"at90usb82", AVR_ISA_USB162, bfd_mach_avr3}, |
107 | {"at90usb162", AVR_ISA_USB162, bfd_mach_avr3}, | |
2460c166 | 108 | {"attiny167", AVR_ISA_TINY3, bfd_mach_avr3}, |
28c9d252 | 109 | {"atmega48", AVR_ISA_PWMx, bfd_mach_avr4}, |
5cc9c0ab | 110 | {"atmega48p", AVR_ISA_PWMx, bfd_mach_avr4}, |
28c9d252 | 111 | {"atmega8", AVR_ISA_M8, bfd_mach_avr4}, |
28c9d252 | 112 | {"atmega88", AVR_ISA_PWMx, bfd_mach_avr4}, |
5cc9c0ab | 113 | {"atmega88p", AVR_ISA_PWMx, bfd_mach_avr4}, |
28c9d252 NC |
114 | {"atmega8515", AVR_ISA_M8, bfd_mach_avr4}, |
115 | {"atmega8535", AVR_ISA_M8, bfd_mach_avr4}, | |
8eb2af8e | 116 | {"atmega8hva", AVR_ISA_PWMx, bfd_mach_avr4}, |
7b60f473 | 117 | {"at90pwm1", AVR_ISA_PWMx, bfd_mach_avr4}, |
28c9d252 | 118 | {"at90pwm2", AVR_ISA_PWMx, bfd_mach_avr4}, |
7337fc21 | 119 | {"at90pwm2b", AVR_ISA_PWMx, bfd_mach_avr4}, |
28c9d252 | 120 | {"at90pwm3", AVR_ISA_PWMx, bfd_mach_avr4}, |
7337fc21 | 121 | {"at90pwm3b", AVR_ISA_PWMx, bfd_mach_avr4}, |
28c9d252 NC |
122 | {"atmega16", AVR_ISA_M323, bfd_mach_avr5}, |
123 | {"atmega161", AVR_ISA_M161, bfd_mach_avr5}, | |
124 | {"atmega162", AVR_ISA_M323, bfd_mach_avr5}, | |
125 | {"atmega163", AVR_ISA_M161, bfd_mach_avr5}, | |
026dcbd7 | 126 | {"atmega164p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 127 | {"atmega165", AVR_ISA_M323, bfd_mach_avr5}, |
026dcbd7 | 128 | {"atmega165p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 129 | {"atmega168", AVR_ISA_M323, bfd_mach_avr5}, |
5cc9c0ab | 130 | {"atmega168p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 131 | {"atmega169", AVR_ISA_M323, bfd_mach_avr5}, |
026dcbd7 | 132 | {"atmega169p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 NC |
133 | {"atmega32", AVR_ISA_M323, bfd_mach_avr5}, |
134 | {"atmega323", AVR_ISA_M323, bfd_mach_avr5}, | |
026dcbd7 | 135 | {"atmega324p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 136 | {"atmega325", AVR_ISA_M323, bfd_mach_avr5}, |
7b60f473 | 137 | {"atmega325p", AVR_ISA_M323, bfd_mach_avr5}, |
5cc9c0ab | 138 | {"atmega328p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 139 | {"atmega329", AVR_ISA_M323, bfd_mach_avr5}, |
7b60f473 | 140 | {"atmega329p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 141 | {"atmega3250", AVR_ISA_M323, bfd_mach_avr5}, |
7b60f473 | 142 | {"atmega3250p",AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 | 143 | {"atmega3290", AVR_ISA_M323, bfd_mach_avr5}, |
7b60f473 | 144 | {"atmega3290p",AVR_ISA_M323, bfd_mach_avr5}, |
ee50f563 | 145 | {"atmega32hvb",AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 NC |
146 | {"atmega406", AVR_ISA_M323, bfd_mach_avr5}, |
147 | {"atmega64", AVR_ISA_M323, bfd_mach_avr5}, | |
148 | {"atmega640", AVR_ISA_M323, bfd_mach_avr5}, | |
149 | {"atmega644", AVR_ISA_M323, bfd_mach_avr5}, | |
026dcbd7 | 150 | {"atmega644p", AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 NC |
151 | {"atmega128", AVR_ISA_M128, bfd_mach_avr5}, |
152 | {"atmega1280", AVR_ISA_M128, bfd_mach_avr5}, | |
153 | {"atmega1281", AVR_ISA_M128, bfd_mach_avr5}, | |
2221168e | 154 | {"atmega1284p",AVR_ISA_M128, bfd_mach_avr5}, |
28c9d252 NC |
155 | {"atmega645", AVR_ISA_M323, bfd_mach_avr5}, |
156 | {"atmega649", AVR_ISA_M323, bfd_mach_avr5}, | |
157 | {"atmega6450", AVR_ISA_M323, bfd_mach_avr5}, | |
158 | {"atmega6490", AVR_ISA_M323, bfd_mach_avr5}, | |
8eb2af8e | 159 | {"atmega16hva",AVR_ISA_M323, bfd_mach_avr5}, |
28c9d252 NC |
160 | {"at90can32" , AVR_ISA_M323, bfd_mach_avr5}, |
161 | {"at90can64" , AVR_ISA_M323, bfd_mach_avr5}, | |
162 | {"at90can128", AVR_ISA_M128, bfd_mach_avr5}, | |
485aa104 NC |
163 | {"at90pwm216", AVR_ISA_M323, bfd_mach_avr5}, |
164 | {"at90pwm316", AVR_ISA_M323, bfd_mach_avr5}, | |
25755480 | 165 | {"atmega32c1", AVR_ISA_M323, bfd_mach_avr5}, |
38de72b9 | 166 | {"atmega32m1", AVR_ISA_M323, bfd_mach_avr5}, |
70881657 | 167 | {"atmega32u4", AVR_ISA_M323, bfd_mach_avr5}, |
d727e8c2 NC |
168 | {"at90usb646", AVR_ISA_M323, bfd_mach_avr5}, |
169 | {"at90usb647", AVR_ISA_M323, bfd_mach_avr5}, | |
170 | {"at90usb1286",AVR_ISA_M128, bfd_mach_avr5}, | |
171 | {"at90usb1287",AVR_ISA_M128, bfd_mach_avr5}, | |
28c9d252 NC |
172 | {"at94k", AVR_ISA_94K, bfd_mach_avr5}, |
173 | {"atmega2560", AVR_ISA_ALL, bfd_mach_avr6}, | |
174 | {"atmega2561", AVR_ISA_ALL, bfd_mach_avr6}, | |
adde6300 AM |
175 | {NULL, 0, 0} |
176 | }; | |
177 | ||
adde6300 | 178 | /* Current MCU type. */ |
dc191a8f NC |
179 | static struct mcu_type_s default_mcu = {"avr2", AVR_ISA_2xxx,bfd_mach_avr2}; |
180 | static struct mcu_type_s * avr_mcu = & default_mcu; | |
adde6300 | 181 | |
00d2865b NC |
182 | /* AVR target-specific switches. */ |
183 | struct avr_opt_s | |
184 | { | |
dc191a8f NC |
185 | int all_opcodes; /* -mall-opcodes: accept all known AVR opcodes. */ |
186 | int no_skip_bug; /* -mno-skip-bug: no warnings for skipping 2-word insns. */ | |
187 | int no_wrap; /* -mno-wrap: reject rjmp/rcall with 8K wrap-around. */ | |
00d2865b NC |
188 | }; |
189 | ||
190 | static struct avr_opt_s avr_opt = { 0, 0, 0 }; | |
191 | ||
adde6300 AM |
192 | const char EXP_CHARS[] = "eE"; |
193 | const char FLT_CHARS[] = "dD"; | |
dc191a8f NC |
194 | |
195 | static void avr_set_arch (int); | |
adde6300 AM |
196 | |
197 | /* The target specific pseudo-ops which we support. */ | |
198 | const pseudo_typeS md_pseudo_table[] = | |
199 | { | |
200 | {"arch", avr_set_arch, 0}, | |
201 | { NULL, NULL, 0} | |
202 | }; | |
203 | ||
204 | #define LDI_IMMEDIATE(x) (((x) & 0xf) | (((x) << 4) & 0xf00)) | |
adde6300 | 205 | |
dc191a8f NC |
206 | #define EXP_MOD_NAME(i) exp_mod[i].name |
207 | #define EXP_MOD_RELOC(i) exp_mod[i].reloc | |
208 | #define EXP_MOD_NEG_RELOC(i) exp_mod[i].neg_reloc | |
209 | #define HAVE_PM_P(i) exp_mod[i].have_pm | |
adde6300 AM |
210 | |
211 | struct exp_mod_s | |
212 | { | |
dc191a8f NC |
213 | char * name; |
214 | bfd_reloc_code_real_type reloc; | |
215 | bfd_reloc_code_real_type neg_reloc; | |
216 | int have_pm; | |
adde6300 AM |
217 | }; |
218 | ||
c6a7ab1f NC |
219 | static struct exp_mod_s exp_mod[] = |
220 | { | |
adde6300 AM |
221 | {"hh8", BFD_RELOC_AVR_HH8_LDI, BFD_RELOC_AVR_HH8_LDI_NEG, 1}, |
222 | {"pm_hh8", BFD_RELOC_AVR_HH8_LDI_PM, BFD_RELOC_AVR_HH8_LDI_PM_NEG, 0}, | |
223 | {"hi8", BFD_RELOC_AVR_HI8_LDI, BFD_RELOC_AVR_HI8_LDI_NEG, 1}, | |
224 | {"pm_hi8", BFD_RELOC_AVR_HI8_LDI_PM, BFD_RELOC_AVR_HI8_LDI_PM_NEG, 0}, | |
225 | {"lo8", BFD_RELOC_AVR_LO8_LDI, BFD_RELOC_AVR_LO8_LDI_NEG, 1}, | |
226 | {"pm_lo8", BFD_RELOC_AVR_LO8_LDI_PM, BFD_RELOC_AVR_LO8_LDI_PM_NEG, 0}, | |
df406460 NC |
227 | {"hlo8", BFD_RELOC_AVR_HH8_LDI, BFD_RELOC_AVR_HH8_LDI_NEG, 0}, |
228 | {"hhi8", BFD_RELOC_AVR_MS8_LDI, BFD_RELOC_AVR_MS8_LDI_NEG, 0}, | |
adde6300 AM |
229 | }; |
230 | ||
8ad7c533 NC |
231 | /* A union used to store indicies into the exp_mod[] array |
232 | in a hash table which expects void * data types. */ | |
233 | typedef union | |
234 | { | |
235 | void * ptr; | |
236 | int index; | |
237 | } mod_index; | |
238 | ||
adde6300 AM |
239 | /* Opcode hash table. */ |
240 | static struct hash_control *avr_hash; | |
241 | ||
242 | /* Reloc modifiers hash control (hh8,hi8,lo8,pm_xx). */ | |
243 | static struct hash_control *avr_mod_hash; | |
244 | ||
00d2865b | 245 | #define OPTION_MMCU 'm' |
dc191a8f NC |
246 | enum options |
247 | { | |
248 | OPTION_ALL_OPCODES = OPTION_MD_BASE + 1, | |
249 | OPTION_NO_SKIP_BUG, | |
250 | OPTION_NO_WRAP | |
251 | }; | |
adde6300 | 252 | |
c6a7ab1f NC |
253 | struct option md_longopts[] = |
254 | { | |
00d2865b NC |
255 | { "mmcu", required_argument, NULL, OPTION_MMCU }, |
256 | { "mall-opcodes", no_argument, NULL, OPTION_ALL_OPCODES }, | |
257 | { "mno-skip-bug", no_argument, NULL, OPTION_NO_SKIP_BUG }, | |
258 | { "mno-wrap", no_argument, NULL, OPTION_NO_WRAP }, | |
259 | { NULL, no_argument, NULL, 0 } | |
adde6300 | 260 | }; |
adde6300 | 261 | |
c6a7ab1f | 262 | size_t md_longopts_size = sizeof (md_longopts); |
00d2865b NC |
263 | |
264 | /* Display nicely formatted list of known MCU names. */ | |
c6a7ab1f | 265 | |
00d2865b | 266 | static void |
dc191a8f | 267 | show_mcu_list (FILE *stream) |
00d2865b NC |
268 | { |
269 | int i, x; | |
270 | ||
271 | fprintf (stream, _("Known MCU names:")); | |
272 | x = 1000; | |
1dab94dd | 273 | |
00d2865b NC |
274 | for (i = 0; mcu_types[i].name; i++) |
275 | { | |
276 | int len = strlen (mcu_types[i].name); | |
1dab94dd | 277 | |
00d2865b | 278 | x += len + 1; |
1dab94dd | 279 | |
00d2865b | 280 | if (x < 75) |
c6a7ab1f | 281 | fprintf (stream, " %s", mcu_types[i].name); |
00d2865b NC |
282 | else |
283 | { | |
284 | fprintf (stream, "\n %s", mcu_types[i].name); | |
285 | x = len + 2; | |
286 | } | |
287 | } | |
1dab94dd | 288 | |
c6a7ab1f | 289 | fprintf (stream, "\n"); |
00d2865b NC |
290 | } |
291 | ||
adde6300 | 292 | static inline char * |
dc191a8f | 293 | skip_space (char *s) |
adde6300 AM |
294 | { |
295 | while (*s == ' ' || *s == '\t') | |
296 | ++s; | |
297 | return s; | |
298 | } | |
299 | ||
300 | /* Extract one word from FROM and copy it to TO. */ | |
c6a7ab1f | 301 | |
adde6300 AM |
302 | static char * |
303 | extract_word (char *from, char *to, int limit) | |
304 | { | |
305 | char *op_start; | |
306 | char *op_end; | |
307 | int size = 0; | |
308 | ||
309 | /* Drop leading whitespace. */ | |
310 | from = skip_space (from); | |
311 | *to = 0; | |
c6a7ab1f | 312 | |
adde6300 | 313 | /* Find the op code end. */ |
c6a7ab1f | 314 | for (op_start = op_end = from; *op_end != 0 && is_part_of_name (*op_end);) |
adde6300 AM |
315 | { |
316 | to[size++] = *op_end++; | |
317 | if (size + 1 >= limit) | |
318 | break; | |
319 | } | |
1dab94dd | 320 | |
adde6300 AM |
321 | to[size] = 0; |
322 | return op_end; | |
323 | } | |
324 | ||
325 | int | |
dc191a8f NC |
326 | md_estimate_size_before_relax (fragS *fragp ATTRIBUTE_UNUSED, |
327 | asection *seg ATTRIBUTE_UNUSED) | |
adde6300 AM |
328 | { |
329 | abort (); | |
330 | return 0; | |
331 | } | |
332 | ||
333 | void | |
dc191a8f | 334 | md_show_usage (FILE *stream) |
adde6300 | 335 | { |
00d2865b NC |
336 | fprintf (stream, |
337 | _("AVR options:\n" | |
adde6300 AM |
338 | " -mmcu=[avr-name] select microcontroller variant\n" |
339 | " [avr-name] can be:\n" | |
65aa24b6 NC |
340 | " avr1 - AT90S1200, ATtiny1x, ATtiny28\n" |
341 | " avr2 - AT90S2xxx, AT90S4xxx, AT90S8xxx, ATtiny22\n" | |
7f5ba16d EW |
342 | " avr3 - ATmega103\n" |
343 | " avr4 - ATmega8, ATmega88\n" | |
65aa24b6 | 344 | " avr5 - ATmega161, ATmega163, ATmega32, AT94K\n" |
adde6300 | 345 | " or immediate microcontroller name.\n")); |
00d2865b NC |
346 | fprintf (stream, |
347 | _(" -mall-opcodes accept all AVR opcodes, even if not supported by MCU\n" | |
348 | " -mno-skip-bug disable warnings for skipping two-word instructions\n" | |
349 | " (default for avr4, avr5)\n" | |
350 | " -mno-wrap reject rjmp/rcall instructions with 8K wrap-around\n" | |
351 | " (default for avr3, avr5)\n")); | |
352 | show_mcu_list (stream); | |
adde6300 AM |
353 | } |
354 | ||
355 | static void | |
dc191a8f | 356 | avr_set_arch (int dummy ATTRIBUTE_UNUSED) |
adde6300 | 357 | { |
dc191a8f | 358 | char str[20]; |
1dab94dd | 359 | |
adde6300 | 360 | input_line_pointer = extract_word (input_line_pointer, str, 20); |
00d2865b | 361 | md_parse_option (OPTION_MMCU, str); |
adde6300 AM |
362 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, avr_mcu->mach); |
363 | } | |
364 | ||
365 | int | |
dc191a8f | 366 | md_parse_option (int c, char *arg) |
adde6300 | 367 | { |
00d2865b | 368 | switch (c) |
adde6300 | 369 | { |
00d2865b NC |
370 | case OPTION_MMCU: |
371 | { | |
372 | int i; | |
373 | char *s = alloca (strlen (arg) + 1); | |
adde6300 | 374 | |
00d2865b NC |
375 | { |
376 | char *t = s; | |
377 | char *arg1 = arg; | |
378 | ||
379 | do | |
3882b010 | 380 | *t = TOLOWER (*arg1++); |
00d2865b NC |
381 | while (*t++); |
382 | } | |
383 | ||
384 | for (i = 0; mcu_types[i].name; ++i) | |
385 | if (strcmp (mcu_types[i].name, s) == 0) | |
386 | break; | |
adde6300 | 387 | |
00d2865b NC |
388 | if (!mcu_types[i].name) |
389 | { | |
390 | show_mcu_list (stderr); | |
391 | as_fatal (_("unknown MCU: %s\n"), arg); | |
392 | } | |
65aa24b6 | 393 | |
00d2865b NC |
394 | /* It is OK to redefine mcu type within the same avr[1-5] bfd machine |
395 | type - this for allows passing -mmcu=... via gcc ASM_SPEC as well | |
396 | as .arch ... in the asm output at the same time. */ | |
00d2865b NC |
397 | if (avr_mcu == &default_mcu || avr_mcu->mach == mcu_types[i].mach) |
398 | avr_mcu = &mcu_types[i]; | |
399 | else | |
400 | as_fatal (_("redefinition of mcu type `%s' to `%s'"), | |
401 | avr_mcu->name, mcu_types[i].name); | |
402 | return 1; | |
403 | } | |
404 | case OPTION_ALL_OPCODES: | |
405 | avr_opt.all_opcodes = 1; | |
406 | return 1; | |
407 | case OPTION_NO_SKIP_BUG: | |
408 | avr_opt.no_skip_bug = 1; | |
409 | return 1; | |
410 | case OPTION_NO_WRAP: | |
411 | avr_opt.no_wrap = 1; | |
adde6300 AM |
412 | return 1; |
413 | } | |
1dab94dd | 414 | |
adde6300 AM |
415 | return 0; |
416 | } | |
417 | ||
418 | symbolS * | |
dc191a8f | 419 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
adde6300 | 420 | { |
dc191a8f | 421 | return NULL; |
adde6300 AM |
422 | } |
423 | ||
adde6300 | 424 | char * |
dc191a8f | 425 | md_atof (int type, char *litP, int *sizeP) |
adde6300 | 426 | { |
499ac353 | 427 | return ieee_md_atof (type, litP, sizeP, FALSE); |
adde6300 AM |
428 | } |
429 | ||
430 | void | |
dc191a8f NC |
431 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, |
432 | asection *sec ATTRIBUTE_UNUSED, | |
433 | fragS *fragP ATTRIBUTE_UNUSED) | |
adde6300 AM |
434 | { |
435 | abort (); | |
436 | } | |
437 | ||
adde6300 | 438 | void |
dc191a8f | 439 | md_begin (void) |
adde6300 | 440 | { |
df136245 | 441 | unsigned int i; |
adde6300 | 442 | struct avr_opcodes_s *opcode; |
dc191a8f | 443 | |
c6a7ab1f | 444 | avr_hash = hash_new (); |
adde6300 AM |
445 | |
446 | /* Insert unique names into hash table. This hash table then provides a | |
447 | quick index to the first opcode with a particular name in the opcode | |
448 | table. */ | |
adde6300 AM |
449 | for (opcode = avr_opcodes; opcode->name; opcode++) |
450 | hash_insert (avr_hash, opcode->name, (char *) opcode); | |
451 | ||
452 | avr_mod_hash = hash_new (); | |
453 | ||
dc191a8f | 454 | for (i = 0; i < ARRAY_SIZE (exp_mod); ++i) |
8ad7c533 NC |
455 | { |
456 | mod_index m; | |
457 | ||
458 | m.index = i + 10; | |
459 | hash_insert (avr_mod_hash, EXP_MOD_NAME (i), m.ptr); | |
460 | } | |
c6a7ab1f | 461 | |
adde6300 AM |
462 | bfd_set_arch_mach (stdoutput, TARGET_ARCH, avr_mcu->mach); |
463 | } | |
464 | ||
df136245 | 465 | /* Resolve STR as a constant expression and return the result. |
c6a7ab1f | 466 | If result greater than MAX then error. */ |
df136245 DC |
467 | |
468 | static unsigned int | |
dc191a8f | 469 | avr_get_constant (char *str, int max) |
df136245 DC |
470 | { |
471 | expressionS ex; | |
dc191a8f | 472 | |
df136245 DC |
473 | str = skip_space (str); |
474 | input_line_pointer = str; | |
dc191a8f | 475 | expression (& ex); |
df136245 DC |
476 | |
477 | if (ex.X_op != O_constant) | |
478 | as_bad (_("constant value required")); | |
479 | ||
480 | if (ex.X_add_number > max || ex.X_add_number < 0) | |
73f4d86e | 481 | as_bad (_("number must be positive and less than %d"), max + 1); |
1dab94dd | 482 | |
df136245 DC |
483 | return ex.X_add_number; |
484 | } | |
485 | ||
dc191a8f | 486 | /* Parse for ldd/std offset. */ |
df136245 | 487 | |
dc191a8f NC |
488 | static void |
489 | avr_offset_expression (expressionS *exp) | |
adde6300 | 490 | { |
dc191a8f NC |
491 | char *str = input_line_pointer; |
492 | char *tmp; | |
493 | char op[8]; | |
adde6300 | 494 | |
dc191a8f NC |
495 | tmp = str; |
496 | str = extract_word (str, op, sizeof (op)); | |
497 | ||
498 | input_line_pointer = tmp; | |
499 | expression (exp); | |
500 | ||
501 | /* Warn about expressions that fail to use lo8 (). */ | |
502 | if (exp->X_op == O_constant) | |
adde6300 | 503 | { |
dc191a8f | 504 | int x = exp->X_add_number; |
28c9d252 | 505 | |
dc191a8f NC |
506 | if (x < -255 || x > 255) |
507 | as_warn (_("constant out of 8-bit range: %d"), x); | |
508 | } | |
509 | } | |
adde6300 | 510 | |
dc191a8f | 511 | /* Parse ordinary expression. */ |
adde6300 | 512 | |
dc191a8f NC |
513 | static char * |
514 | parse_exp (char *s, expressionS *op) | |
515 | { | |
516 | input_line_pointer = s; | |
517 | expression (op); | |
518 | if (op->X_op == O_absent) | |
519 | as_bad (_("missing operand")); | |
520 | return input_line_pointer; | |
521 | } | |
1dab94dd | 522 | |
dc191a8f NC |
523 | /* Parse special expressions (needed for LDI command): |
524 | xx8 (address) | |
525 | xx8 (-address) | |
526 | pm_xx8 (address) | |
527 | pm_xx8 (-address) | |
528 | where xx is: hh, hi, lo. */ | |
adde6300 | 529 | |
dc191a8f NC |
530 | static bfd_reloc_code_real_type |
531 | avr_ldi_expression (expressionS *exp) | |
532 | { | |
533 | char *str = input_line_pointer; | |
534 | char *tmp; | |
535 | char op[8]; | |
536 | int mod; | |
28c9d252 NC |
537 | int linker_stubs_should_be_generated = 0; |
538 | ||
dc191a8f | 539 | tmp = str; |
adde6300 | 540 | |
dc191a8f | 541 | str = extract_word (str, op, sizeof (op)); |
adde6300 | 542 | |
dc191a8f NC |
543 | if (op[0]) |
544 | { | |
8ad7c533 | 545 | mod_index m; |
28c9d252 | 546 | |
8ad7c533 NC |
547 | m.ptr = hash_find (avr_mod_hash, op); |
548 | mod = m.index; | |
1dab94dd | 549 | |
dc191a8f NC |
550 | if (mod) |
551 | { | |
552 | int closes = 0; | |
b170af93 | 553 | |
dc191a8f NC |
554 | mod -= 10; |
555 | str = skip_space (str); | |
00d2865b | 556 | |
dc191a8f NC |
557 | if (*str == '(') |
558 | { | |
28c9d252 | 559 | bfd_reloc_code_real_type reloc_to_return; |
dc191a8f | 560 | int neg_p = 0; |
00d2865b | 561 | |
dc191a8f | 562 | ++str; |
00d2865b | 563 | |
dc191a8f | 564 | if (strncmp ("pm(", str, 3) == 0 |
28c9d252 NC |
565 | || strncmp ("gs(",str,3) == 0 |
566 | || strncmp ("-(gs(",str,5) == 0 | |
dc191a8f NC |
567 | || strncmp ("-(pm(", str, 5) == 0) |
568 | { | |
569 | if (HAVE_PM_P (mod)) | |
570 | { | |
571 | ++mod; | |
572 | ++closes; | |
573 | } | |
574 | else | |
575 | as_bad (_("illegal expression")); | |
b170af93 | 576 | |
28c9d252 NC |
577 | if (str[0] == 'g' || str[2] == 'g') |
578 | linker_stubs_should_be_generated = 1; | |
579 | ||
dc191a8f NC |
580 | if (*str == '-') |
581 | { | |
582 | neg_p = 1; | |
583 | ++closes; | |
584 | str += 5; | |
585 | } | |
586 | else | |
587 | str += 3; | |
588 | } | |
adde6300 | 589 | |
dc191a8f NC |
590 | if (*str == '-' && *(str + 1) == '(') |
591 | { | |
592 | neg_p ^= 1; | |
593 | ++closes; | |
594 | str += 2; | |
595 | } | |
750bce0e | 596 | |
dc191a8f NC |
597 | input_line_pointer = str; |
598 | expression (exp); | |
750bce0e | 599 | |
dc191a8f NC |
600 | do |
601 | { | |
602 | if (*input_line_pointer != ')') | |
603 | { | |
604 | as_bad (_("`)' required")); | |
605 | break; | |
606 | } | |
607 | input_line_pointer++; | |
608 | } | |
609 | while (closes--); | |
610 | ||
28c9d252 NC |
611 | reloc_to_return = |
612 | neg_p ? EXP_MOD_NEG_RELOC (mod) : EXP_MOD_RELOC (mod); | |
613 | if (linker_stubs_should_be_generated) | |
614 | { | |
615 | switch (reloc_to_return) | |
616 | { | |
617 | case BFD_RELOC_AVR_LO8_LDI_PM: | |
618 | reloc_to_return = BFD_RELOC_AVR_LO8_LDI_GS; | |
619 | break; | |
620 | case BFD_RELOC_AVR_HI8_LDI_PM: | |
621 | reloc_to_return = BFD_RELOC_AVR_HI8_LDI_GS; | |
622 | break; | |
623 | ||
624 | default: | |
625 | as_warn (_("expression dangerous with linker stubs")); | |
626 | } | |
627 | } | |
628 | return reloc_to_return; | |
dc191a8f NC |
629 | } |
630 | } | |
631 | } | |
750bce0e NC |
632 | |
633 | input_line_pointer = tmp; | |
634 | expression (exp); | |
635 | ||
636 | /* Warn about expressions that fail to use lo8 (). */ | |
637 | if (exp->X_op == O_constant) | |
638 | { | |
639 | int x = exp->X_add_number; | |
dc191a8f | 640 | |
750bce0e NC |
641 | if (x < -255 || x > 255) |
642 | as_warn (_("constant out of 8-bit range: %d"), x); | |
643 | } | |
dc191a8f NC |
644 | |
645 | return BFD_RELOC_AVR_LDI; | |
750bce0e NC |
646 | } |
647 | ||
df136245 | 648 | /* Parse one instruction operand. |
c6a7ab1f NC |
649 | Return operand bitmask. Also fixups can be generated. */ |
650 | ||
adde6300 | 651 | static unsigned int |
dc191a8f NC |
652 | avr_operand (struct avr_opcodes_s *opcode, |
653 | int where, | |
654 | char *op, | |
655 | char **line) | |
adde6300 | 656 | { |
adde6300 | 657 | expressionS op_expr; |
df136245 DC |
658 | unsigned int op_mask = 0; |
659 | char *str = skip_space (*line); | |
adde6300 | 660 | |
adde6300 AM |
661 | switch (*op) |
662 | { | |
663 | /* Any register operand. */ | |
664 | case 'w': | |
665 | case 'd': | |
666 | case 'r': | |
b170af93 DC |
667 | case 'a': |
668 | case 'v': | |
c6a7ab1f NC |
669 | if (*str == 'r' || *str == 'R') |
670 | { | |
671 | char r_name[20]; | |
1dab94dd | 672 | |
c6a7ab1f | 673 | str = extract_word (str, r_name, sizeof (r_name)); |
65b1d096 | 674 | op_mask = 0xff; |
3882b010 | 675 | if (ISDIGIT (r_name[1])) |
c6a7ab1f NC |
676 | { |
677 | if (r_name[2] == '\0') | |
678 | op_mask = r_name[1] - '0'; | |
679 | else if (r_name[1] != '0' | |
3882b010 | 680 | && ISDIGIT (r_name[2]) |
c6a7ab1f NC |
681 | && r_name[3] == '\0') |
682 | op_mask = (r_name[1] - '0') * 10 + r_name[2] - '0'; | |
683 | } | |
684 | } | |
685 | else | |
686 | { | |
687 | op_mask = avr_get_constant (str, 31); | |
688 | str = input_line_pointer; | |
689 | } | |
1dab94dd | 690 | |
c6a7ab1f NC |
691 | if (op_mask <= 31) |
692 | { | |
693 | switch (*op) | |
694 | { | |
695 | case 'a': | |
696 | if (op_mask < 16 || op_mask > 23) | |
697 | as_bad (_("register r16-r23 required")); | |
698 | op_mask -= 16; | |
699 | break; | |
1dab94dd | 700 | |
c6a7ab1f NC |
701 | case 'd': |
702 | if (op_mask < 16) | |
703 | as_bad (_("register number above 15 required")); | |
704 | op_mask -= 16; | |
705 | break; | |
1dab94dd | 706 | |
c6a7ab1f NC |
707 | case 'v': |
708 | if (op_mask & 1) | |
709 | as_bad (_("even register number required")); | |
710 | op_mask >>= 1; | |
711 | break; | |
1dab94dd | 712 | |
c6a7ab1f | 713 | case 'w': |
65b1d096 | 714 | if ((op_mask & 1) || op_mask < 24) |
c6a7ab1f | 715 | as_bad (_("register r24, r26, r28 or r30 required")); |
65b1d096 | 716 | op_mask = (op_mask - 24) >> 1; |
c6a7ab1f NC |
717 | break; |
718 | } | |
719 | break; | |
720 | } | |
721 | as_bad (_("register name or number from 0 to 31 required")); | |
adde6300 AM |
722 | break; |
723 | ||
724 | case 'e': | |
725 | { | |
726 | char c; | |
1dab94dd | 727 | |
adde6300 AM |
728 | if (*str == '-') |
729 | { | |
c6a7ab1f | 730 | str = skip_space (str + 1); |
adde6300 AM |
731 | op_mask = 0x1002; |
732 | } | |
3882b010 | 733 | c = TOLOWER (*str); |
adde6300 AM |
734 | if (c == 'x') |
735 | op_mask |= 0x100c; | |
736 | else if (c == 'y') | |
737 | op_mask |= 0x8; | |
738 | else if (c != 'z') | |
00d2865b | 739 | as_bad (_("pointer register (X, Y or Z) required")); |
adde6300 | 740 | |
c6a7ab1f | 741 | str = skip_space (str + 1); |
adde6300 AM |
742 | if (*str == '+') |
743 | { | |
744 | ++str; | |
745 | if (op_mask & 2) | |
00d2865b | 746 | as_bad (_("cannot both predecrement and postincrement")); |
adde6300 AM |
747 | op_mask |= 0x1001; |
748 | } | |
e38c9cc2 | 749 | |
1188e082 | 750 | /* avr1 can do "ld r,Z" and "st Z,r" but no other pointer |
e38c9cc2 | 751 | registers, no predecrement, no postincrement. */ |
00d2865b NC |
752 | if (!avr_opt.all_opcodes && (op_mask & 0x100F) |
753 | && !(avr_mcu->isa & AVR_ISA_SRAM)) | |
754 | as_bad (_("addressing mode not supported")); | |
adde6300 AM |
755 | } |
756 | break; | |
757 | ||
b170af93 | 758 | case 'z': |
c6a7ab1f NC |
759 | if (*str == '-') |
760 | as_bad (_("can't predecrement")); | |
1dab94dd | 761 | |
c6a7ab1f NC |
762 | if (! (*str == 'z' || *str == 'Z')) |
763 | as_bad (_("pointer register Z required")); | |
1dab94dd | 764 | |
c6a7ab1f NC |
765 | str = skip_space (str + 1); |
766 | ||
767 | if (*str == '+') | |
768 | { | |
769 | ++str; | |
770 | op_mask |= 1; | |
771 | } | |
d669d37f NC |
772 | |
773 | /* attiny26 can do "lpm" and "lpm r,Z" but not "lpm r,Z+". */ | |
774 | if (!avr_opt.all_opcodes | |
775 | && (op_mask & 0x0001) | |
776 | && !(avr_mcu->isa & AVR_ISA_MOVW)) | |
777 | as_bad (_("postincrement not supported")); | |
b170af93 DC |
778 | break; |
779 | ||
adde6300 AM |
780 | case 'b': |
781 | { | |
3882b010 | 782 | char c = TOLOWER (*str++); |
1dab94dd | 783 | |
adde6300 AM |
784 | if (c == 'y') |
785 | op_mask |= 0x8; | |
786 | else if (c != 'z') | |
00d2865b | 787 | as_bad (_("pointer register (Y or Z) required")); |
adde6300 AM |
788 | str = skip_space (str); |
789 | if (*str++ == '+') | |
790 | { | |
750bce0e NC |
791 | input_line_pointer = str; |
792 | avr_offset_expression (& op_expr); | |
adde6300 | 793 | str = input_line_pointer; |
750bce0e NC |
794 | fix_new_exp (frag_now, where, 3, |
795 | &op_expr, FALSE, BFD_RELOC_AVR_6); | |
adde6300 AM |
796 | } |
797 | } | |
798 | break; | |
799 | ||
800 | case 'h': | |
c6a7ab1f NC |
801 | str = parse_exp (str, &op_expr); |
802 | fix_new_exp (frag_now, where, opcode->insn_size * 2, | |
b34976b6 | 803 | &op_expr, FALSE, BFD_RELOC_AVR_CALL); |
adde6300 AM |
804 | break; |
805 | ||
806 | case 'L': | |
c6a7ab1f NC |
807 | str = parse_exp (str, &op_expr); |
808 | fix_new_exp (frag_now, where, opcode->insn_size * 2, | |
b34976b6 | 809 | &op_expr, TRUE, BFD_RELOC_AVR_13_PCREL); |
adde6300 AM |
810 | break; |
811 | ||
812 | case 'l': | |
c6a7ab1f NC |
813 | str = parse_exp (str, &op_expr); |
814 | fix_new_exp (frag_now, where, opcode->insn_size * 2, | |
b34976b6 | 815 | &op_expr, TRUE, BFD_RELOC_AVR_7_PCREL); |
adde6300 AM |
816 | break; |
817 | ||
818 | case 'i': | |
c6a7ab1f NC |
819 | str = parse_exp (str, &op_expr); |
820 | fix_new_exp (frag_now, where + 2, opcode->insn_size * 2, | |
b34976b6 | 821 | &op_expr, FALSE, BFD_RELOC_16); |
adde6300 AM |
822 | break; |
823 | ||
824 | case 'M': | |
825 | { | |
826 | bfd_reloc_code_real_type r_type; | |
1dab94dd | 827 | |
c6a7ab1f NC |
828 | input_line_pointer = str; |
829 | r_type = avr_ldi_expression (&op_expr); | |
830 | str = input_line_pointer; | |
adde6300 | 831 | fix_new_exp (frag_now, where, 3, |
b34976b6 | 832 | &op_expr, FALSE, r_type); |
adde6300 AM |
833 | } |
834 | break; | |
835 | ||
836 | case 'n': | |
837 | { | |
838 | unsigned int x; | |
1dab94dd | 839 | |
adde6300 AM |
840 | x = ~avr_get_constant (str, 255); |
841 | str = input_line_pointer; | |
842 | op_mask |= (x & 0xf) | ((x << 4) & 0xf00); | |
843 | } | |
844 | break; | |
845 | ||
846 | case 'K': | |
750bce0e NC |
847 | input_line_pointer = str; |
848 | avr_offset_expression (& op_expr); | |
849 | str = input_line_pointer; | |
850 | fix_new_exp (frag_now, where, 3, | |
851 | & op_expr, FALSE, BFD_RELOC_AVR_6_ADIW); | |
adde6300 AM |
852 | break; |
853 | ||
854 | case 'S': | |
855 | case 's': | |
856 | { | |
857 | unsigned int x; | |
1dab94dd | 858 | |
adde6300 AM |
859 | x = avr_get_constant (str, 7); |
860 | str = input_line_pointer; | |
861 | if (*op == 'S') | |
862 | x <<= 4; | |
863 | op_mask |= x; | |
864 | } | |
865 | break; | |
866 | ||
867 | case 'P': | |
868 | { | |
869 | unsigned int x; | |
1dab94dd | 870 | |
adde6300 AM |
871 | x = avr_get_constant (str, 63); |
872 | str = input_line_pointer; | |
873 | op_mask |= (x & 0xf) | ((x & 0x30) << 5); | |
874 | } | |
875 | break; | |
876 | ||
877 | case 'p': | |
878 | { | |
879 | unsigned int x; | |
1dab94dd | 880 | |
adde6300 AM |
881 | x = avr_get_constant (str, 31); |
882 | str = input_line_pointer; | |
883 | op_mask |= x << 3; | |
884 | } | |
885 | break; | |
1dab94dd | 886 | |
1188e082 DC |
887 | case '?': |
888 | break; | |
1dab94dd | 889 | |
adde6300 | 890 | default: |
00d2865b | 891 | as_bad (_("unknown constraint `%c'"), *op); |
adde6300 | 892 | } |
1dab94dd | 893 | |
adde6300 AM |
894 | *line = str; |
895 | return op_mask; | |
896 | } | |
897 | ||
dc191a8f NC |
898 | /* Parse instruction operands. |
899 | Return binary opcode. */ | |
900 | ||
901 | static unsigned int | |
902 | avr_operands (struct avr_opcodes_s *opcode, char **line) | |
903 | { | |
904 | char *op = opcode->constraints; | |
905 | unsigned int bin = opcode->bin_opcode; | |
906 | char *frag = frag_more (opcode->insn_size * 2); | |
907 | char *str = *line; | |
908 | int where = frag - frag_now->fr_literal; | |
909 | static unsigned int prev = 0; /* Previous opcode. */ | |
910 | ||
911 | /* Opcode have operands. */ | |
912 | if (*op) | |
913 | { | |
914 | unsigned int reg1 = 0; | |
915 | unsigned int reg2 = 0; | |
916 | int reg1_present = 0; | |
917 | int reg2_present = 0; | |
918 | ||
919 | /* Parse first operand. */ | |
920 | if (REGISTER_P (*op)) | |
921 | reg1_present = 1; | |
922 | reg1 = avr_operand (opcode, where, op, &str); | |
923 | ++op; | |
924 | ||
925 | /* Parse second operand. */ | |
926 | if (*op) | |
927 | { | |
928 | if (*op == ',') | |
929 | ++op; | |
930 | ||
931 | if (*op == '=') | |
932 | { | |
933 | reg2 = reg1; | |
934 | reg2_present = 1; | |
935 | } | |
936 | else | |
937 | { | |
938 | if (REGISTER_P (*op)) | |
939 | reg2_present = 1; | |
940 | ||
941 | str = skip_space (str); | |
942 | if (*str++ != ',') | |
943 | as_bad (_("`,' required")); | |
944 | str = skip_space (str); | |
945 | ||
946 | reg2 = avr_operand (opcode, where, op, &str); | |
947 | } | |
948 | ||
949 | if (reg1_present && reg2_present) | |
950 | reg2 = (reg2 & 0xf) | ((reg2 << 5) & 0x200); | |
951 | else if (reg2_present) | |
952 | reg2 <<= 4; | |
953 | } | |
954 | if (reg1_present) | |
955 | reg1 <<= 4; | |
956 | bin |= reg1 | reg2; | |
957 | } | |
958 | ||
959 | /* Detect undefined combinations (like ld r31,Z+). */ | |
960 | if (!avr_opt.all_opcodes && AVR_UNDEF_P (bin)) | |
961 | as_warn (_("undefined combination of operands")); | |
962 | ||
963 | if (opcode->insn_size == 2) | |
964 | { | |
965 | /* Warn if the previous opcode was cpse/sbic/sbis/sbrc/sbrs | |
966 | (AVR core bug, fixed in the newer devices). */ | |
967 | if (!(avr_opt.no_skip_bug || | |
968 | (avr_mcu->isa & (AVR_ISA_MUL | AVR_ISA_MOVW))) | |
969 | && AVR_SKIP_P (prev)) | |
970 | as_warn (_("skipping two-word instruction")); | |
971 | ||
972 | bfd_putl32 ((bfd_vma) bin, frag); | |
973 | } | |
974 | else | |
975 | bfd_putl16 ((bfd_vma) bin, frag); | |
976 | ||
977 | prev = bin; | |
978 | *line = str; | |
979 | return bin; | |
980 | } | |
981 | ||
adde6300 AM |
982 | /* GAS will call this function for each section at the end of the assembly, |
983 | to permit the CPU backend to adjust the alignment of a section. */ | |
c6a7ab1f | 984 | |
adde6300 | 985 | valueT |
dc191a8f | 986 | md_section_align (asection *seg, valueT addr) |
adde6300 AM |
987 | { |
988 | int align = bfd_get_section_alignment (stdoutput, seg); | |
989 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
990 | } | |
991 | ||
992 | /* If you define this macro, it should return the offset between the | |
993 | address of a PC relative fixup and the position from which the PC | |
994 | relative adjustment should be made. On many processors, the base | |
995 | of a PC relative instruction is the next instruction, so this | |
996 | macro would return the length of an instruction. */ | |
c6a7ab1f | 997 | |
adde6300 | 998 | long |
dc191a8f | 999 | md_pcrel_from_section (fixS *fixp, segT sec) |
adde6300 | 1000 | { |
c6a7ab1f | 1001 | if (fixp->fx_addsy != (symbolS *) NULL |
adde6300 AM |
1002 | && (!S_IS_DEFINED (fixp->fx_addsy) |
1003 | || (S_GET_SEGMENT (fixp->fx_addsy) != sec))) | |
1004 | return 0; | |
1dab94dd | 1005 | |
adde6300 AM |
1006 | return fixp->fx_frag->fr_address + fixp->fx_where; |
1007 | } | |
1008 | ||
1009 | /* GAS will call this for each fixup. It should store the correct | |
c6a7ab1f NC |
1010 | value in the object file. */ |
1011 | ||
94f592af | 1012 | void |
dc191a8f | 1013 | md_apply_fix (fixS *fixP, valueT * valP, segT seg) |
adde6300 AM |
1014 | { |
1015 | unsigned char *where; | |
1016 | unsigned long insn; | |
a161fe53 | 1017 | long value = *valP; |
adde6300 | 1018 | |
94f592af NC |
1019 | if (fixP->fx_addsy == (symbolS *) NULL) |
1020 | fixP->fx_done = 1; | |
1021 | ||
87733541 AM |
1022 | else if (fixP->fx_pcrel) |
1023 | { | |
1024 | segT s = S_GET_SEGMENT (fixP->fx_addsy); | |
1025 | ||
1026 | if (s == seg || s == absolute_section) | |
1027 | { | |
1028 | value += S_GET_VALUE (fixP->fx_addsy); | |
1029 | fixP->fx_done = 1; | |
1030 | } | |
1031 | } | |
1032 | ||
a161fe53 AM |
1033 | /* We don't actually support subtracting a symbol. */ |
1034 | if (fixP->fx_subsy != (symbolS *) NULL) | |
1035 | as_bad_where (fixP->fx_file, fixP->fx_line, _("expression too complex")); | |
1dab94dd | 1036 | |
94f592af | 1037 | switch (fixP->fx_r_type) |
adde6300 AM |
1038 | { |
1039 | default: | |
94f592af | 1040 | fixP->fx_no_overflow = 1; |
adde6300 AM |
1041 | break; |
1042 | case BFD_RELOC_AVR_7_PCREL: | |
1043 | case BFD_RELOC_AVR_13_PCREL: | |
1044 | case BFD_RELOC_32: | |
1045 | case BFD_RELOC_16: | |
1046 | case BFD_RELOC_AVR_CALL: | |
1047 | break; | |
1048 | } | |
1049 | ||
94f592af | 1050 | if (fixP->fx_done) |
adde6300 AM |
1051 | { |
1052 | /* Fetch the instruction, insert the fully resolved operand | |
1053 | value, and stuff the instruction back again. */ | |
2132e3a3 | 1054 | where = (unsigned char *) fixP->fx_frag->fr_literal + fixP->fx_where; |
adde6300 AM |
1055 | insn = bfd_getl16 (where); |
1056 | ||
94f592af | 1057 | switch (fixP->fx_r_type) |
adde6300 AM |
1058 | { |
1059 | case BFD_RELOC_AVR_7_PCREL: | |
1060 | if (value & 1) | |
94f592af | 1061 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 | 1062 | _("odd address operand: %ld"), value); |
1dab94dd | 1063 | |
adde6300 AM |
1064 | /* Instruction addresses are always right-shifted by 1. */ |
1065 | value >>= 1; | |
1066 | --value; /* Correct PC. */ | |
1dab94dd | 1067 | |
adde6300 | 1068 | if (value < -64 || value > 63) |
94f592af | 1069 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 AM |
1070 | _("operand out of range: %ld"), value); |
1071 | value = (value << 3) & 0x3f8; | |
1072 | bfd_putl16 ((bfd_vma) (value | insn), where); | |
1073 | break; | |
1074 | ||
1075 | case BFD_RELOC_AVR_13_PCREL: | |
1076 | if (value & 1) | |
94f592af | 1077 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 | 1078 | _("odd address operand: %ld"), value); |
1dab94dd | 1079 | |
adde6300 AM |
1080 | /* Instruction addresses are always right-shifted by 1. */ |
1081 | value >>= 1; | |
1082 | --value; /* Correct PC. */ | |
adde6300 AM |
1083 | |
1084 | if (value < -2048 || value > 2047) | |
1085 | { | |
65aa24b6 | 1086 | /* No wrap for devices with >8K of program memory. */ |
00d2865b | 1087 | if ((avr_mcu->isa & AVR_ISA_MEGA) || avr_opt.no_wrap) |
94f592af | 1088 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 AM |
1089 | _("operand out of range: %ld"), value); |
1090 | } | |
1091 | ||
1092 | value &= 0xfff; | |
1093 | bfd_putl16 ((bfd_vma) (value | insn), where); | |
1094 | break; | |
1095 | ||
1096 | case BFD_RELOC_32: | |
1097 | bfd_putl16 ((bfd_vma) value, where); | |
1098 | break; | |
1099 | ||
1100 | case BFD_RELOC_16: | |
1101 | bfd_putl16 ((bfd_vma) value, where); | |
1102 | break; | |
1103 | ||
1104 | case BFD_RELOC_AVR_16_PM: | |
c6a7ab1f | 1105 | bfd_putl16 ((bfd_vma) (value >> 1), where); |
adde6300 AM |
1106 | break; |
1107 | ||
750bce0e NC |
1108 | case BFD_RELOC_AVR_LDI: |
1109 | if (value > 255) | |
1110 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1111 | _("operand out of range: %ld"), value); | |
1112 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value), where); | |
1113 | break; | |
1114 | ||
1115 | case BFD_RELOC_AVR_6: | |
1116 | if ((value > 63) || (value < 0)) | |
1117 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1118 | _("operand out of range: %ld"), value); | |
1119 | bfd_putl16 ((bfd_vma) insn | ((value & 7) | ((value & (3 << 3)) << 7) | ((value & (1 << 5)) << 8)), where); | |
1120 | break; | |
1121 | ||
1122 | case BFD_RELOC_AVR_6_ADIW: | |
1123 | if ((value > 63) || (value < 0)) | |
1124 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
1125 | _("operand out of range: %ld"), value); | |
1126 | bfd_putl16 ((bfd_vma) insn | (value & 0xf) | ((value & 0x30) << 2), where); | |
1127 | break; | |
1128 | ||
adde6300 AM |
1129 | case BFD_RELOC_AVR_LO8_LDI: |
1130 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value), where); | |
1131 | break; | |
1132 | ||
adde6300 AM |
1133 | case BFD_RELOC_AVR_HI8_LDI: |
1134 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 8), where); | |
1135 | break; | |
1136 | ||
df406460 | 1137 | case BFD_RELOC_AVR_MS8_LDI: |
adde6300 AM |
1138 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 24), where); |
1139 | break; | |
1140 | ||
1141 | case BFD_RELOC_AVR_HH8_LDI: | |
1142 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 16), where); | |
1143 | break; | |
1144 | ||
1145 | case BFD_RELOC_AVR_LO8_LDI_NEG: | |
1146 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value), where); | |
1147 | break; | |
1148 | ||
adde6300 AM |
1149 | case BFD_RELOC_AVR_HI8_LDI_NEG: |
1150 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 8), where); | |
1151 | break; | |
1152 | ||
df406460 | 1153 | case BFD_RELOC_AVR_MS8_LDI_NEG: |
adde6300 AM |
1154 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 24), where); |
1155 | break; | |
1156 | ||
1157 | case BFD_RELOC_AVR_HH8_LDI_NEG: | |
1158 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 16), where); | |
1159 | break; | |
1160 | ||
1161 | case BFD_RELOC_AVR_LO8_LDI_PM: | |
1162 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 1), where); | |
1163 | break; | |
1164 | ||
1165 | case BFD_RELOC_AVR_HI8_LDI_PM: | |
1166 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 9), where); | |
1167 | break; | |
1168 | ||
1169 | case BFD_RELOC_AVR_HH8_LDI_PM: | |
1170 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (value >> 17), where); | |
1171 | break; | |
1172 | ||
1173 | case BFD_RELOC_AVR_LO8_LDI_PM_NEG: | |
1174 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 1), where); | |
1175 | break; | |
1176 | ||
1177 | case BFD_RELOC_AVR_HI8_LDI_PM_NEG: | |
1178 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 9), where); | |
1179 | break; | |
1180 | ||
1181 | case BFD_RELOC_AVR_HH8_LDI_PM_NEG: | |
1182 | bfd_putl16 ((bfd_vma) insn | LDI_IMMEDIATE (-value >> 17), where); | |
1183 | break; | |
1184 | ||
1185 | case BFD_RELOC_AVR_CALL: | |
1186 | { | |
1187 | unsigned long x; | |
1dab94dd | 1188 | |
adde6300 AM |
1189 | x = bfd_getl16 (where); |
1190 | if (value & 1) | |
94f592af | 1191 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 AM |
1192 | _("odd address operand: %ld"), value); |
1193 | value >>= 1; | |
1194 | x |= ((value & 0x10000) | ((value << 3) & 0x1f00000)) >> 16; | |
1195 | bfd_putl16 ((bfd_vma) x, where); | |
c6a7ab1f | 1196 | bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2); |
adde6300 AM |
1197 | } |
1198 | break; | |
1199 | ||
1200 | default: | |
c6a7ab1f | 1201 | as_fatal (_("line %d: unknown relocation type: 0x%x"), |
94f592af | 1202 | fixP->fx_line, fixP->fx_r_type); |
adde6300 AM |
1203 | break; |
1204 | } | |
1205 | } | |
1206 | else | |
1207 | { | |
94f592af | 1208 | switch (fixP->fx_r_type) |
adde6300 AM |
1209 | { |
1210 | case -BFD_RELOC_AVR_HI8_LDI_NEG: | |
1211 | case -BFD_RELOC_AVR_HI8_LDI: | |
1212 | case -BFD_RELOC_AVR_LO8_LDI_NEG: | |
1213 | case -BFD_RELOC_AVR_LO8_LDI: | |
94f592af | 1214 | as_bad_where (fixP->fx_file, fixP->fx_line, |
adde6300 | 1215 | _("only constant expression allowed")); |
94f592af | 1216 | fixP->fx_done = 1; |
adde6300 AM |
1217 | break; |
1218 | default: | |
1219 | break; | |
1220 | } | |
adde6300 | 1221 | } |
adde6300 AM |
1222 | } |
1223 | ||
7be1c489 AM |
1224 | /* GAS will call this to generate a reloc, passing the resulting reloc |
1225 | to `bfd_install_relocation'. This currently works poorly, as | |
1226 | `bfd_install_relocation' often does the wrong thing, and instances of | |
1227 | `tc_gen_reloc' have been written to work around the problems, which | |
1228 | in turns makes it difficult to fix `bfd_install_relocation'. */ | |
adde6300 AM |
1229 | |
1230 | /* If while processing a fixup, a reloc really needs to be created | |
1231 | then it is done here. */ | |
1232 | ||
1233 | arelent * | |
dc191a8f NC |
1234 | tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED, |
1235 | fixS *fixp) | |
adde6300 AM |
1236 | { |
1237 | arelent *reloc; | |
1238 | ||
df406460 NC |
1239 | if (fixp->fx_addsy && fixp->fx_subsy) |
1240 | { | |
1241 | long value = 0; | |
1242 | ||
1243 | if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy)) | |
1244 | || S_GET_SEGMENT (fixp->fx_addsy) == undefined_section) | |
1245 | { | |
1246 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1247 | "Difference of symbols in different sections is not supported"); | |
1248 | return NULL; | |
1249 | } | |
1250 | ||
28c9d252 | 1251 | /* We are dealing with two symbols defined in the same section. |
df406460 NC |
1252 | Let us fix-up them here. */ |
1253 | value += S_GET_VALUE (fixp->fx_addsy); | |
1254 | value -= S_GET_VALUE (fixp->fx_subsy); | |
1255 | ||
1256 | /* When fx_addsy and fx_subsy both are zero, md_apply_fix | |
1257 | only takes it's second operands for the fixup value. */ | |
1258 | fixp->fx_addsy = NULL; | |
1259 | fixp->fx_subsy = NULL; | |
1260 | md_apply_fix (fixp, (valueT *) &value, NULL); | |
1261 | ||
1262 | return NULL; | |
1263 | } | |
1264 | ||
dc191a8f | 1265 | reloc = xmalloc (sizeof (arelent)); |
adde6300 | 1266 | |
dc191a8f | 1267 | reloc->sym_ptr_ptr = xmalloc (sizeof (asymbol *)); |
adde6300 AM |
1268 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); |
1269 | ||
1270 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
1271 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
1272 | if (reloc->howto == (reloc_howto_type *) NULL) | |
1273 | { | |
1274 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
c6a7ab1f NC |
1275 | _("reloc %d not supported by object file format"), |
1276 | (int) fixp->fx_r_type); | |
adde6300 AM |
1277 | return NULL; |
1278 | } | |
1279 | ||
1280 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT | |
1281 | || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
1282 | reloc->address = fixp->fx_offset; | |
1283 | ||
1284 | reloc->addend = fixp->fx_offset; | |
1285 | ||
1286 | return reloc; | |
1287 | } | |
1288 | ||
adde6300 | 1289 | void |
dc191a8f | 1290 | md_assemble (char *str) |
adde6300 | 1291 | { |
c6a7ab1f | 1292 | struct avr_opcodes_s *opcode; |
adde6300 AM |
1293 | char op[11]; |
1294 | ||
c6a7ab1f | 1295 | str = skip_space (extract_word (str, op, sizeof (op))); |
adde6300 AM |
1296 | |
1297 | if (!op[0]) | |
00d2865b | 1298 | as_bad (_("can't find opcode ")); |
adde6300 AM |
1299 | |
1300 | opcode = (struct avr_opcodes_s *) hash_find (avr_hash, op); | |
1301 | ||
1302 | if (opcode == NULL) | |
1303 | { | |
00d2865b | 1304 | as_bad (_("unknown opcode `%s'"), op); |
adde6300 AM |
1305 | return; |
1306 | } | |
1307 | ||
b170af93 | 1308 | /* Special case for opcodes with optional operands (lpm, elpm) - |
1188e082 | 1309 | version with operands exists in avr_opcodes[] in the next entry. */ |
c6a7ab1f | 1310 | |
1188e082 DC |
1311 | if (*str && *opcode->constraints == '?') |
1312 | ++opcode; | |
b170af93 | 1313 | |
00d2865b NC |
1314 | if (!avr_opt.all_opcodes && (opcode->isa & avr_mcu->isa) != opcode->isa) |
1315 | as_bad (_("illegal opcode %s for mcu %s"), opcode->name, avr_mcu->name); | |
adde6300 AM |
1316 | |
1317 | /* We used to set input_line_pointer to the result of get_operands, | |
1318 | but that is wrong. Our caller assumes we don't change it. */ | |
1319 | { | |
1320 | char *t = input_line_pointer; | |
dc191a8f | 1321 | |
adde6300 | 1322 | avr_operands (opcode, &str); |
b170af93 | 1323 | if (*skip_space (str)) |
00d2865b | 1324 | as_bad (_("garbage at end of line")); |
adde6300 AM |
1325 | input_line_pointer = t; |
1326 | } | |
1327 | } | |
1328 | ||
adde6300 | 1329 | /* Flag to pass `pm' mode between `avr_parse_cons_expression' and |
c6a7ab1f | 1330 | `avr_cons_fix_new'. */ |
adde6300 AM |
1331 | static int exp_mod_pm = 0; |
1332 | ||
1333 | /* Parse special CONS expression: pm (expression) | |
28c9d252 NC |
1334 | or alternatively: gs (expression). |
1335 | These are used for addressing program memory. | |
c6a7ab1f NC |
1336 | Relocation: BFD_RELOC_AVR_16_PM. */ |
1337 | ||
adde6300 | 1338 | void |
dc191a8f | 1339 | avr_parse_cons_expression (expressionS *exp, int nbytes) |
adde6300 | 1340 | { |
c6a7ab1f | 1341 | char *tmp; |
adde6300 AM |
1342 | |
1343 | exp_mod_pm = 0; | |
1344 | ||
1345 | tmp = input_line_pointer = skip_space (input_line_pointer); | |
1346 | ||
1347 | if (nbytes == 2) | |
1348 | { | |
28c9d252 NC |
1349 | char *pm_name1 = "pm"; |
1350 | char *pm_name2 = "gs"; | |
1351 | int len = strlen (pm_name1); | |
1352 | /* len must be the same for both pm identifiers. */ | |
1dab94dd | 1353 | |
28c9d252 NC |
1354 | if (strncasecmp (input_line_pointer, pm_name1, len) == 0 |
1355 | || strncasecmp (input_line_pointer, pm_name2, len) == 0) | |
adde6300 AM |
1356 | { |
1357 | input_line_pointer = skip_space (input_line_pointer + len); | |
1dab94dd | 1358 | |
adde6300 AM |
1359 | if (*input_line_pointer == '(') |
1360 | { | |
1361 | input_line_pointer = skip_space (input_line_pointer + 1); | |
1362 | exp_mod_pm = 1; | |
1363 | expression (exp); | |
1dab94dd | 1364 | |
adde6300 AM |
1365 | if (*input_line_pointer == ')') |
1366 | ++input_line_pointer; | |
1367 | else | |
1368 | { | |
00d2865b | 1369 | as_bad (_("`)' required")); |
adde6300 AM |
1370 | exp_mod_pm = 0; |
1371 | } | |
1dab94dd | 1372 | |
adde6300 AM |
1373 | return; |
1374 | } | |
1dab94dd | 1375 | |
adde6300 AM |
1376 | input_line_pointer = tmp; |
1377 | } | |
1378 | } | |
1dab94dd | 1379 | |
adde6300 AM |
1380 | expression (exp); |
1381 | } | |
1382 | ||
1383 | void | |
dc191a8f NC |
1384 | avr_cons_fix_new (fragS *frag, |
1385 | int where, | |
1386 | int nbytes, | |
1387 | expressionS *exp) | |
adde6300 AM |
1388 | { |
1389 | if (exp_mod_pm == 0) | |
1390 | { | |
1391 | if (nbytes == 2) | |
b34976b6 | 1392 | fix_new_exp (frag, where, nbytes, exp, FALSE, BFD_RELOC_16); |
adde6300 | 1393 | else if (nbytes == 4) |
b34976b6 | 1394 | fix_new_exp (frag, where, nbytes, exp, FALSE, BFD_RELOC_32); |
adde6300 | 1395 | else |
00d2865b | 1396 | as_bad (_("illegal %srelocation size: %d"), "", nbytes); |
adde6300 AM |
1397 | } |
1398 | else | |
1399 | { | |
1400 | if (nbytes == 2) | |
b34976b6 | 1401 | fix_new_exp (frag, where, nbytes, exp, FALSE, BFD_RELOC_AVR_16_PM); |
adde6300 | 1402 | else |
00d2865b | 1403 | as_bad (_("illegal %srelocation size: %d"), "`pm' ", nbytes); |
adde6300 AM |
1404 | exp_mod_pm = 0; |
1405 | } | |
1406 | } |