Commit | Line | Data |
---|---|---|
60bcf0fa | 1 | /* tc-m68hc11.c -- Assembler code for the Motorola 68HC11 & 68HC12. |
6927f982 NC |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010, |
3 | 2011, 2012 | |
2132e3a3 | 4 | Free Software Foundation, Inc. |
7bfda7eb | 5 | Written by Stephane Carrez (stcarrez@nerim.fr) |
6927f982 | 6 | XGATE and S12X added by James Murray (jsm@jsm-net.demon.co.uk) |
60bcf0fa NC |
7 | |
8 | This file is part of GAS, the GNU Assembler. | |
9 | ||
10 | GAS is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
ec2655a6 | 12 | the Free Software Foundation; either version 3, or (at your option) |
60bcf0fa NC |
13 | any later version. |
14 | ||
15 | GAS is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GAS; see the file COPYING. If not, write to | |
4b4da160 NC |
22 | the Free Software Foundation, 51 Franklin Street - Fifth Floor, |
23 | Boston, MA 02110-1301, USA. */ | |
60bcf0fa | 24 | |
60bcf0fa | 25 | #include "as.h" |
3882b010 | 26 | #include "safe-ctype.h" |
60bcf0fa NC |
27 | #include "subsegs.h" |
28 | #include "opcode/m68hc11.h" | |
29 | #include "dwarf2dbg.h" | |
7bfda7eb | 30 | #include "elf/m68hc11.h" |
60bcf0fa | 31 | |
60bcf0fa NC |
32 | const char comment_chars[] = ";!"; |
33 | const char line_comment_chars[] = "#*"; | |
34 | const char line_separator_chars[] = ""; | |
35 | ||
36 | const char EXP_CHARS[] = "eE"; | |
37 | const char FLT_CHARS[] = "dD"; | |
38 | ||
39 | #define STATE_CONDITIONAL_BRANCH (1) | |
40 | #define STATE_PC_RELATIVE (2) | |
41 | #define STATE_INDEXED_OFFSET (3) | |
75538612 SC |
42 | #define STATE_INDEXED_PCREL (4) |
43 | #define STATE_XBCC_BRANCH (5) | |
44 | #define STATE_CONDITIONAL_BRANCH_6812 (6) | |
60bcf0fa NC |
45 | |
46 | #define STATE_BYTE (0) | |
47 | #define STATE_BITS5 (0) | |
48 | #define STATE_WORD (1) | |
49 | #define STATE_BITS9 (1) | |
50 | #define STATE_LONG (2) | |
51 | #define STATE_BITS16 (2) | |
52 | #define STATE_UNDF (3) /* Symbol undefined in pass1 */ | |
53 | ||
54 | /* This macro has no side-effects. */ | |
55 | #define ENCODE_RELAX(what,length) (((what) << 2) + (length)) | |
606ab118 AM |
56 | #define RELAX_STATE(s) ((s) >> 2) |
57 | #define RELAX_LENGTH(s) ((s) & 3) | |
60bcf0fa NC |
58 | |
59 | #define IS_OPCODE(C1,C2) (((C1) & 0x0FF) == ((C2) & 0x0FF)) | |
60 | ||
61 | /* This table describes how you change sizes for the various types of variable | |
62 | size expressions. This version only supports two kinds. */ | |
63 | ||
64 | /* The fields are: | |
fafb6d17 NC |
65 | How far Forward this mode will reach. |
66 | How far Backward this mode will reach. | |
67 | How many bytes this mode will add to the size of the frag. | |
68 | Which mode to go to if the offset won't fit in this one. */ | |
69 | ||
6927f982 NC |
70 | relax_typeS md_relax_table[] = |
71 | { | |
fafb6d17 NC |
72 | {1, 1, 0, 0}, /* First entries aren't used. */ |
73 | {1, 1, 0, 0}, /* For no good reason except. */ | |
74 | {1, 1, 0, 0}, /* that the VAX doesn't either. */ | |
60bcf0fa NC |
75 | {1, 1, 0, 0}, |
76 | ||
77 | /* Relax for bcc <L>. | |
78 | These insns are translated into b!cc +3 jmp L. */ | |
79 | {(127), (-128), 0, ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_WORD)}, | |
80 | {0, 0, 3, 0}, | |
81 | {1, 1, 0, 0}, | |
82 | {1, 1, 0, 0}, | |
83 | ||
84 | /* Relax for bsr <L> and bra <L>. | |
85 | These insns are translated into jsr and jmp. */ | |
86 | {(127), (-128), 0, ENCODE_RELAX (STATE_PC_RELATIVE, STATE_WORD)}, | |
87 | {0, 0, 1, 0}, | |
88 | {1, 1, 0, 0}, | |
89 | {1, 1, 0, 0}, | |
90 | ||
91 | /* Relax for indexed offset: 5-bits, 9-bits, 16-bits. */ | |
92 | {(15), (-16), 0, ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS9)}, | |
93 | {(255), (-256), 1, ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS16)}, | |
88051039 | 94 | {0, 0, 2, 0}, |
60bcf0fa NC |
95 | {1, 1, 0, 0}, |
96 | ||
75538612 SC |
97 | /* Relax for PC relative offset: 5-bits, 9-bits, 16-bits. |
98 | For the 9-bit case, there will be a -1 correction to take into | |
99 | account the new byte that's why the range is -255..256. */ | |
100 | {(15), (-16), 0, ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS9)}, | |
101 | {(256), (-255), 1, ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS16)}, | |
102 | {0, 0, 2, 0}, | |
103 | {1, 1, 0, 0}, | |
104 | ||
60bcf0fa NC |
105 | /* Relax for dbeq/ibeq/tbeq r,<L>: |
106 | These insns are translated into db!cc +3 jmp L. */ | |
107 | {(255), (-256), 0, ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_WORD)}, | |
108 | {0, 0, 3, 0}, | |
109 | {1, 1, 0, 0}, | |
110 | {1, 1, 0, 0}, | |
111 | ||
112 | /* Relax for bcc <L> on 68HC12. | |
113 | These insns are translated into lbcc <L>. */ | |
114 | {(127), (-128), 0, ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_WORD)}, | |
115 | {0, 0, 2, 0}, | |
116 | {1, 1, 0, 0}, | |
117 | {1, 1, 0, 0}, | |
118 | ||
119 | }; | |
120 | ||
121 | /* 68HC11 and 68HC12 registers. They are numbered according to the 68HC12. */ | |
6927f982 NC |
122 | typedef enum register_id |
123 | { | |
60bcf0fa NC |
124 | REG_NONE = -1, |
125 | REG_A = 0, | |
126 | REG_B = 1, | |
127 | REG_CCR = 2, | |
128 | REG_D = 4, | |
129 | REG_X = 5, | |
130 | REG_Y = 6, | |
131 | REG_SP = 7, | |
6927f982 NC |
132 | REG_PC = 8, |
133 | REG_R0 = 0, | |
134 | REG_R1 = 1, | |
135 | REG_R2 = 2, | |
136 | REG_R3 = 3, | |
137 | REG_R4 = 4, | |
138 | REG_R5 = 5, | |
139 | REG_R6 = 6, | |
140 | REG_R7 = 7, | |
141 | REG_SP_XG = 8, | |
142 | REG_PC_XG = 9, | |
143 | REG_CCR_XG = 10 | |
60bcf0fa NC |
144 | } register_id; |
145 | ||
6927f982 NC |
146 | typedef struct operand |
147 | { | |
60bcf0fa NC |
148 | expressionS exp; |
149 | register_id reg1; | |
150 | register_id reg2; | |
151 | int mode; | |
152 | } operand; | |
153 | ||
6927f982 NC |
154 | struct m68hc11_opcode_def |
155 | { | |
60bcf0fa NC |
156 | long format; |
157 | int min_operands; | |
158 | int max_operands; | |
159 | int nb_modes; | |
160 | int used; | |
161 | struct m68hc11_opcode *opcode; | |
162 | }; | |
163 | ||
164 | static struct m68hc11_opcode_def *m68hc11_opcode_defs = 0; | |
165 | static int m68hc11_nb_opcode_defs = 0; | |
166 | ||
6927f982 NC |
167 | typedef struct alias |
168 | { | |
60bcf0fa NC |
169 | const char *name; |
170 | const char *alias; | |
098f2ec3 | 171 | } alias; |
60bcf0fa | 172 | |
6927f982 NC |
173 | static alias alias_opcodes[] = |
174 | { | |
60bcf0fa NC |
175 | {"cpd", "cmpd"}, |
176 | {"cpx", "cmpx"}, | |
177 | {"cpy", "cmpy"}, | |
178 | {0, 0} | |
179 | }; | |
180 | ||
6927f982 NC |
181 | struct m9s12xg_opcode_def |
182 | { | |
183 | long format; | |
184 | int min_operands; | |
185 | int max_operands; | |
186 | int nb_modes; | |
187 | int used; | |
188 | struct m9s12xg_opcode *opcode; | |
189 | }; | |
190 | ||
fafb6d17 | 191 | /* Local functions. */ |
ca43c854 SC |
192 | static register_id reg_name_search (char *); |
193 | static register_id register_name (void); | |
194 | static int cmp_opcode (struct m68hc11_opcode *, struct m68hc11_opcode *); | |
195 | static char *print_opcode_format (struct m68hc11_opcode *, int); | |
196 | static char *skip_whites (char *); | |
197 | static int check_range (long, int); | |
198 | static void print_opcode_list (void); | |
199 | static void get_default_target (void); | |
200 | static void print_insn_format (char *); | |
201 | static int get_operand (operand *, int, long); | |
202 | static void fixup8 (expressionS *, int, int); | |
203 | static void fixup16 (expressionS *, int, int); | |
204 | static void fixup24 (expressionS *, int, int); | |
6927f982 | 205 | static void fixup8_xg (expressionS *, int, int); |
ca43c854 SC |
206 | static unsigned char convert_branch (unsigned char); |
207 | static char *m68hc11_new_insn (int); | |
208 | static void build_dbranch_insn (struct m68hc11_opcode *, | |
209 | operand *, int, int); | |
210 | static int build_indexed_byte (operand *, int, int); | |
211 | static int build_reg_mode (operand *, int); | |
212 | ||
213 | static struct m68hc11_opcode *find (struct m68hc11_opcode_def *, | |
214 | operand *, int); | |
215 | static struct m68hc11_opcode *find_opcode (struct m68hc11_opcode_def *, | |
216 | operand *, int *); | |
217 | static void build_jump_insn (struct m68hc11_opcode *, operand *, int, int); | |
6927f982 | 218 | static void build_insn_xg (struct m68hc11_opcode *, operand *, int); |
ca43c854 SC |
219 | static void build_insn (struct m68hc11_opcode *, operand *, int); |
220 | static int relaxable_symbol (symbolS *); | |
60bcf0fa | 221 | |
e371935f | 222 | /* Pseudo op to indicate a relax group. */ |
ca43c854 | 223 | static void s_m68hc11_relax (int); |
e371935f | 224 | |
eb086b59 | 225 | /* Pseudo op to control the ELF flags. */ |
ca43c854 | 226 | static void s_m68hc11_mode (int); |
eb086b59 SC |
227 | |
228 | /* Mark the symbols with STO_M68HC12_FAR to indicate the functions | |
229 | are using 'rtc' for returning. It is necessary to use 'call' | |
230 | to invoke them. This is also used by the debugger to correctly | |
231 | find the stack frame. */ | |
ca43c854 | 232 | static void s_m68hc11_mark_symbol (int); |
eb086b59 | 233 | |
60bcf0fa NC |
234 | /* Controls whether relative branches can be turned into long branches. |
235 | When the relative offset is too large, the insn are changed: | |
236 | bra -> jmp | |
237 | bsr -> jsr | |
238 | bcc -> b!cc +3 | |
239 | jmp L | |
240 | dbcc -> db!cc +3 | |
241 | jmp L | |
fafb6d17 | 242 | |
60bcf0fa | 243 | Setting the flag forbidds this. */ |
1370e33d | 244 | static short flag_fixed_branches = 0; |
60bcf0fa NC |
245 | |
246 | /* Force to use long jumps (absolute) instead of relative branches. */ | |
247 | static short flag_force_long_jumps = 0; | |
248 | ||
249 | /* Change the direct addressing mode into an absolute addressing mode | |
250 | when the insn does not support direct addressing. | |
251 | For example, "clr *ZD0" is normally not possible and is changed | |
252 | into "clr ZDO". */ | |
253 | static short flag_strict_direct_addressing = 1; | |
254 | ||
255 | /* When an opcode has invalid operand, print out the syntax of the opcode | |
256 | to stderr. */ | |
257 | static short flag_print_insn_syntax = 0; | |
258 | ||
259 | /* Dumps the list of instructions with syntax and then exit: | |
260 | 1 -> Only dumps the list (sorted by name) | |
261 | 2 -> Generate an example (or test) that can be compiled. */ | |
262 | static short flag_print_opcodes = 0; | |
263 | ||
264 | /* Opcode hash table. */ | |
265 | static struct hash_control *m68hc11_hash; | |
266 | ||
267 | /* Current cpu (either cpu6811 or cpu6812). This is determined automagically | |
67c1ffbe | 268 | by 'get_default_target' by looking at default BFD vector. This is overridden |
60bcf0fa NC |
269 | with the -m<cpu> option. */ |
270 | static int current_architecture = 0; | |
271 | ||
272 | /* Default cpu determined by 'get_default_target'. */ | |
273 | static const char *default_cpu; | |
274 | ||
275 | /* Number of opcodes in the sorted table (filtered by current cpu). */ | |
276 | static int num_opcodes; | |
277 | ||
278 | /* The opcodes sorted by name and filtered by current cpu. */ | |
279 | static struct m68hc11_opcode *m68hc11_sorted_opcodes; | |
280 | ||
eb086b59 | 281 | /* ELF flags to set in the output file header. */ |
2f904664 | 282 | static int elf_flags = E_M68HC11_F64; |
eb086b59 | 283 | |
60bcf0fa NC |
284 | /* These are the machine dependent pseudo-ops. These are included so |
285 | the assembler can work on the output from the SUN C compiler, which | |
286 | generates these. */ | |
287 | ||
288 | /* This table describes all the machine specific pseudo-ops the assembler | |
289 | has to support. The fields are: | |
290 | pseudo-op name without dot | |
291 | function to call to execute this pseudo-op | |
292 | Integer arg to pass to the function. */ | |
6927f982 NC |
293 | const pseudo_typeS md_pseudo_table[] = |
294 | { | |
60bcf0fa NC |
295 | /* The following pseudo-ops are supported for MRI compatibility. */ |
296 | {"fcb", cons, 1}, | |
297 | {"fdb", cons, 2}, | |
6927f982 | 298 | {"fqb", cons, 4}, |
38a57ae7 | 299 | {"fcc", stringer, 8 + 1}, |
60bcf0fa | 300 | {"rmb", s_space, 0}, |
986c6f4b | 301 | |
e629c13f SC |
302 | /* Motorola ALIS. */ |
303 | {"xrefb", s_ignore, 0}, /* Same as xref */ | |
304 | ||
e371935f SC |
305 | /* Gcc driven relaxation. */ |
306 | {"relax", s_m68hc11_relax, 0}, | |
307 | ||
eb086b59 SC |
308 | /* .mode instruction (ala SH). */ |
309 | {"mode", s_m68hc11_mode, 0}, | |
310 | ||
311 | /* .far instruction. */ | |
312 | {"far", s_m68hc11_mark_symbol, STO_M68HC12_FAR}, | |
313 | ||
314 | /* .interrupt instruction. */ | |
315 | {"interrupt", s_m68hc11_mark_symbol, STO_M68HC12_INTERRUPT}, | |
316 | ||
60bcf0fa NC |
317 | {0, 0, 0} |
318 | }; | |
60bcf0fa NC |
319 | \f |
320 | /* Options and initialization. */ | |
321 | ||
5a38dc70 | 322 | const char *md_shortopts = "Sm:"; |
60bcf0fa | 323 | |
6927f982 NC |
324 | struct option md_longopts[] = |
325 | { | |
60bcf0fa | 326 | #define OPTION_FORCE_LONG_BRANCH (OPTION_MD_BASE) |
1370e33d NC |
327 | {"force-long-branches", no_argument, NULL, OPTION_FORCE_LONG_BRANCH}, |
328 | {"force-long-branchs", no_argument, NULL, OPTION_FORCE_LONG_BRANCH}, /* Misspelt version kept for backwards compatibility. */ | |
60bcf0fa | 329 | |
1370e33d NC |
330 | #define OPTION_SHORT_BRANCHES (OPTION_MD_BASE + 1) |
331 | {"short-branches", no_argument, NULL, OPTION_SHORT_BRANCHES}, | |
332 | {"short-branchs", no_argument, NULL, OPTION_SHORT_BRANCHES}, /* Misspelt version kept for backwards compatibility. */ | |
60bcf0fa NC |
333 | |
334 | #define OPTION_STRICT_DIRECT_MODE (OPTION_MD_BASE + 2) | |
335 | {"strict-direct-mode", no_argument, NULL, OPTION_STRICT_DIRECT_MODE}, | |
336 | ||
337 | #define OPTION_PRINT_INSN_SYNTAX (OPTION_MD_BASE + 3) | |
338 | {"print-insn-syntax", no_argument, NULL, OPTION_PRINT_INSN_SYNTAX}, | |
339 | ||
340 | #define OPTION_PRINT_OPCODES (OPTION_MD_BASE + 4) | |
341 | {"print-opcodes", no_argument, NULL, OPTION_PRINT_OPCODES}, | |
342 | ||
343 | #define OPTION_GENERATE_EXAMPLE (OPTION_MD_BASE + 5) | |
344 | {"generate-example", no_argument, NULL, OPTION_GENERATE_EXAMPLE}, | |
345 | ||
2f904664 SC |
346 | #define OPTION_MSHORT (OPTION_MD_BASE + 6) |
347 | {"mshort", no_argument, NULL, OPTION_MSHORT}, | |
348 | ||
349 | #define OPTION_MLONG (OPTION_MD_BASE + 7) | |
350 | {"mlong", no_argument, NULL, OPTION_MLONG}, | |
351 | ||
352 | #define OPTION_MSHORT_DOUBLE (OPTION_MD_BASE + 8) | |
353 | {"mshort-double", no_argument, NULL, OPTION_MSHORT_DOUBLE}, | |
354 | ||
355 | #define OPTION_MLONG_DOUBLE (OPTION_MD_BASE + 9) | |
356 | {"mlong-double", no_argument, NULL, OPTION_MLONG_DOUBLE}, | |
357 | ||
6927f982 NC |
358 | #define OPTION_XGATE_RAMOFFSET (OPTION_MD_BASE + 10) |
359 | {"xgate-ramoffset", no_argument, NULL, OPTION_XGATE_RAMOFFSET}, | |
360 | ||
60bcf0fa NC |
361 | {NULL, no_argument, NULL, 0} |
362 | }; | |
363 | size_t md_longopts_size = sizeof (md_longopts); | |
364 | ||
365 | /* Get the target cpu for the assembler. This is based on the configure | |
366 | options and on the -m68hc11/-m68hc12 option. If no option is specified, | |
367 | we must get the default. */ | |
368 | const char * | |
ca43c854 | 369 | m68hc11_arch_format (void) |
60bcf0fa NC |
370 | { |
371 | get_default_target (); | |
372 | if (current_architecture & cpu6811) | |
373 | return "elf32-m68hc11"; | |
374 | else | |
375 | return "elf32-m68hc12"; | |
376 | } | |
377 | ||
378 | enum bfd_architecture | |
ca43c854 | 379 | m68hc11_arch (void) |
60bcf0fa NC |
380 | { |
381 | get_default_target (); | |
382 | if (current_architecture & cpu6811) | |
383 | return bfd_arch_m68hc11; | |
384 | else | |
385 | return bfd_arch_m68hc12; | |
386 | } | |
387 | ||
388 | int | |
ca43c854 | 389 | m68hc11_mach (void) |
60bcf0fa NC |
390 | { |
391 | return 0; | |
392 | } | |
393 | ||
986c6f4b SC |
394 | /* Listing header selected according to cpu. */ |
395 | const char * | |
ca43c854 | 396 | m68hc11_listing_header (void) |
986c6f4b SC |
397 | { |
398 | if (current_architecture & cpu6811) | |
399 | return "M68HC11 GAS "; | |
6927f982 NC |
400 | else if (current_architecture & cpuxgate) |
401 | return "XGATE GAS "; | |
402 | else if (current_architecture & cpu9s12x) | |
403 | return "S12X GAS "; | |
986c6f4b SC |
404 | else |
405 | return "M68HC12 GAS "; | |
406 | } | |
407 | ||
60bcf0fa | 408 | void |
ca43c854 | 409 | md_show_usage (FILE *stream) |
60bcf0fa NC |
410 | { |
411 | get_default_target (); | |
412 | fprintf (stream, _("\ | |
d01030e6 | 413 | Motorola 68HC11/68HC12/68HCS12 options:\n\ |
f0abc2a1 | 414 | -m68hc11 | -m68hc12 |\n\ |
6927f982 NC |
415 | -m68hcs12 | -mm9s12x |\n\ |
416 | -mm9s12xg specify the processor [default %s]\n\ | |
2f904664 SC |
417 | -mshort use 16-bit int ABI (default)\n\ |
418 | -mlong use 32-bit int ABI\n\ | |
419 | -mshort-double use 32-bit double ABI\n\ | |
420 | -mlong-double use 64-bit double ABI (default)\n\ | |
1370e33d NC |
421 | --force-long-branches always turn relative branches into absolute ones\n\ |
422 | -S,--short-branches do not turn relative branches into absolute ones\n\ | |
60bcf0fa NC |
423 | when the offset is out of range\n\ |
424 | --strict-direct-mode do not turn the direct mode into extended mode\n\ | |
425 | when the instruction does not support direct mode\n\ | |
426 | --print-insn-syntax print the syntax of instruction in case of error\n\ | |
427 | --print-opcodes print the list of instructions with syntax\n\ | |
6927f982 | 428 | --xgate-ramoffset offset ram addresses by 0xc000\n\ |
60bcf0fa NC |
429 | --generate-example generate an example of each instruction\n\ |
430 | (used for testing)\n"), default_cpu); | |
431 | ||
432 | } | |
433 | ||
434 | /* Try to identify the default target based on the BFD library. */ | |
435 | static void | |
ca43c854 | 436 | get_default_target (void) |
60bcf0fa NC |
437 | { |
438 | const bfd_target *target; | |
439 | bfd abfd; | |
440 | ||
441 | if (current_architecture != 0) | |
442 | return; | |
443 | ||
444 | default_cpu = "unknown"; | |
445 | target = bfd_find_target (0, &abfd); | |
446 | if (target && target->name) | |
447 | { | |
448 | if (strcmp (target->name, "elf32-m68hc12") == 0) | |
449 | { | |
450 | current_architecture = cpu6812; | |
451 | default_cpu = "m68hc12"; | |
452 | } | |
453 | else if (strcmp (target->name, "elf32-m68hc11") == 0) | |
454 | { | |
455 | current_architecture = cpu6811; | |
456 | default_cpu = "m68hc11"; | |
457 | } | |
458 | else | |
459 | { | |
460 | as_bad (_("Default target `%s' is not supported."), target->name); | |
461 | } | |
462 | } | |
463 | } | |
464 | ||
465 | void | |
ca43c854 | 466 | m68hc11_print_statistics (FILE *file) |
60bcf0fa NC |
467 | { |
468 | int i; | |
469 | struct m68hc11_opcode_def *opc; | |
470 | ||
471 | hash_print_statistics (file, "opcode table", m68hc11_hash); | |
472 | ||
473 | opc = m68hc11_opcode_defs; | |
474 | if (opc == 0 || m68hc11_nb_opcode_defs == 0) | |
475 | return; | |
476 | ||
477 | /* Dump the opcode statistics table. */ | |
478 | fprintf (file, _("Name # Modes Min ops Max ops Modes mask # Used\n")); | |
479 | for (i = 0; i < m68hc11_nb_opcode_defs; i++, opc++) | |
480 | { | |
481 | fprintf (file, "%-7.7s %5d %7d %7d 0x%08lx %7d\n", | |
482 | opc->opcode->name, | |
483 | opc->nb_modes, | |
484 | opc->min_operands, opc->max_operands, opc->format, opc->used); | |
485 | } | |
486 | } | |
487 | ||
488 | int | |
ca43c854 | 489 | md_parse_option (int c, char *arg) |
60bcf0fa NC |
490 | { |
491 | get_default_target (); | |
492 | switch (c) | |
493 | { | |
986c6f4b | 494 | /* -S means keep external to 2 bit offset rather than 16 bit one. */ |
1370e33d | 495 | case OPTION_SHORT_BRANCHES: |
60bcf0fa | 496 | case 'S': |
1370e33d | 497 | flag_fixed_branches = 1; |
60bcf0fa NC |
498 | break; |
499 | ||
500 | case OPTION_FORCE_LONG_BRANCH: | |
501 | flag_force_long_jumps = 1; | |
502 | break; | |
503 | ||
504 | case OPTION_PRINT_INSN_SYNTAX: | |
505 | flag_print_insn_syntax = 1; | |
506 | break; | |
507 | ||
508 | case OPTION_PRINT_OPCODES: | |
509 | flag_print_opcodes = 1; | |
510 | break; | |
511 | ||
512 | case OPTION_STRICT_DIRECT_MODE: | |
513 | flag_strict_direct_addressing = 0; | |
514 | break; | |
515 | ||
516 | case OPTION_GENERATE_EXAMPLE: | |
517 | flag_print_opcodes = 2; | |
518 | break; | |
519 | ||
2f904664 SC |
520 | case OPTION_MSHORT: |
521 | elf_flags &= ~E_M68HC11_I32; | |
522 | break; | |
523 | ||
524 | case OPTION_MLONG: | |
525 | elf_flags |= E_M68HC11_I32; | |
526 | break; | |
527 | ||
528 | case OPTION_MSHORT_DOUBLE: | |
529 | elf_flags &= ~E_M68HC11_F64; | |
530 | break; | |
531 | ||
532 | case OPTION_MLONG_DOUBLE: | |
533 | elf_flags |= E_M68HC11_F64; | |
534 | break; | |
535 | ||
6927f982 NC |
536 | case OPTION_XGATE_RAMOFFSET: |
537 | elf_flags |= E_M68HC11_XGATE_RAMOFFSET; | |
538 | break; | |
539 | ||
60bcf0fa | 540 | case 'm': |
6927f982 NC |
541 | if ((strcasecmp (arg, "68hc11") == 0) |
542 | || (strcasecmp (arg, "m68hc11") == 0)) | |
60bcf0fa | 543 | current_architecture = cpu6811; |
6927f982 NC |
544 | else if ((strcasecmp (arg, "68hc12") == 0) |
545 | || (strcasecmp (arg, "m68hc12") == 0)) | |
60bcf0fa | 546 | current_architecture = cpu6812; |
6927f982 NC |
547 | else if ((strcasecmp (arg, "68hcs12") == 0) |
548 | || (strcasecmp (arg, "m68hcs12") == 0)) | |
d01030e6 | 549 | current_architecture = cpu6812 | cpu6812s; |
6927f982 NC |
550 | else if (strcasecmp (arg, "m9s12x") == 0) |
551 | current_architecture = cpu6812 | cpu6812s | cpu9s12x; | |
552 | else if ((strcasecmp (arg, "m9s12xg") == 0) | |
553 | || (strcasecmp (arg, "xgate") == 0)) | |
554 | /* xgate for backwards compatability */ | |
555 | current_architecture = cpuxgate; | |
60bcf0fa NC |
556 | else |
557 | as_bad (_("Option `%s' is not recognized."), arg); | |
558 | break; | |
559 | ||
560 | default: | |
561 | return 0; | |
562 | } | |
563 | ||
564 | return 1; | |
565 | } | |
566 | \f | |
567 | symbolS * | |
ca43c854 | 568 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
60bcf0fa NC |
569 | { |
570 | return 0; | |
571 | } | |
572 | ||
60bcf0fa | 573 | char * |
ca43c854 | 574 | md_atof (int type, char *litP, int *sizeP) |
60bcf0fa | 575 | { |
499ac353 | 576 | return ieee_md_atof (type, litP, sizeP, TRUE); |
60bcf0fa NC |
577 | } |
578 | ||
579 | valueT | |
ca43c854 | 580 | md_section_align (asection *seg, valueT addr) |
60bcf0fa NC |
581 | { |
582 | int align = bfd_get_section_alignment (stdoutput, seg); | |
583 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
584 | } | |
585 | ||
60bcf0fa | 586 | static int |
ca43c854 | 587 | cmp_opcode (struct m68hc11_opcode *op1, struct m68hc11_opcode *op2) |
60bcf0fa NC |
588 | { |
589 | return strcmp (op1->name, op2->name); | |
590 | } | |
591 | ||
7bfda7eb SC |
592 | #define IS_CALL_SYMBOL(MODE) \ |
593 | (((MODE) & (M6812_OP_PAGE|M6811_OP_IND16)) \ | |
594 | == ((M6812_OP_PAGE|M6811_OP_IND16))) | |
595 | ||
60bcf0fa NC |
596 | /* Initialize the assembler. Create the opcode hash table |
597 | (sorted on the names) with the M6811 opcode table | |
598 | (from opcode library). */ | |
599 | void | |
ca43c854 | 600 | md_begin (void) |
60bcf0fa NC |
601 | { |
602 | char *prev_name = ""; | |
603 | struct m68hc11_opcode *opcodes; | |
604 | struct m68hc11_opcode_def *opc = 0; | |
605 | int i, j; | |
606 | ||
607 | get_default_target (); | |
608 | ||
609 | m68hc11_hash = hash_new (); | |
610 | ||
611 | /* Get a writable copy of the opcode table and sort it on the names. */ | |
612 | opcodes = (struct m68hc11_opcode *) xmalloc (m68hc11_num_opcodes * | |
613 | sizeof (struct | |
614 | m68hc11_opcode)); | |
615 | m68hc11_sorted_opcodes = opcodes; | |
616 | num_opcodes = 0; | |
617 | for (i = 0; i < m68hc11_num_opcodes; i++) | |
618 | { | |
619 | if (m68hc11_opcodes[i].arch & current_architecture) | |
620 | { | |
621 | opcodes[num_opcodes] = m68hc11_opcodes[i]; | |
622 | if (opcodes[num_opcodes].name[0] == 'b' | |
623 | && opcodes[num_opcodes].format & M6811_OP_JUMP_REL | |
624 | && !(opcodes[num_opcodes].format & M6811_OP_BITMASK)) | |
625 | { | |
626 | num_opcodes++; | |
627 | opcodes[num_opcodes] = m68hc11_opcodes[i]; | |
628 | } | |
629 | num_opcodes++; | |
630 | for (j = 0; alias_opcodes[j].name != 0; j++) | |
631 | if (strcmp (m68hc11_opcodes[i].name, alias_opcodes[j].name) == 0) | |
632 | { | |
633 | opcodes[num_opcodes] = m68hc11_opcodes[i]; | |
634 | opcodes[num_opcodes].name = alias_opcodes[j].alias; | |
635 | num_opcodes++; | |
636 | break; | |
637 | } | |
638 | } | |
639 | } | |
1910266d | 640 | qsort (opcodes, num_opcodes, sizeof (struct m68hc11_opcode), |
ca43c854 | 641 | (int (*) (const void*, const void*)) cmp_opcode); |
60bcf0fa NC |
642 | |
643 | opc = (struct m68hc11_opcode_def *) | |
644 | xmalloc (num_opcodes * sizeof (struct m68hc11_opcode_def)); | |
645 | m68hc11_opcode_defs = opc--; | |
646 | ||
647 | /* Insert unique names into hash table. The M6811 instruction set | |
648 | has several identical opcode names that have different opcodes based | |
649 | on the operands. This hash table then provides a quick index to | |
650 | the first opcode with a particular name in the opcode table. */ | |
651 | for (i = 0; i < num_opcodes; i++, opcodes++) | |
652 | { | |
653 | int expect; | |
654 | ||
655 | if (strcmp (prev_name, opcodes->name)) | |
656 | { | |
657 | prev_name = (char *) opcodes->name; | |
658 | ||
659 | opc++; | |
660 | opc->format = 0; | |
661 | opc->min_operands = 100; | |
662 | opc->max_operands = 0; | |
663 | opc->nb_modes = 0; | |
664 | opc->opcode = opcodes; | |
665 | opc->used = 0; | |
ca43c854 | 666 | hash_insert (m68hc11_hash, opcodes->name, opc); |
60bcf0fa NC |
667 | } |
668 | opc->nb_modes++; | |
669 | opc->format |= opcodes->format; | |
670 | ||
671 | /* See how many operands this opcode needs. */ | |
672 | expect = 0; | |
6927f982 NC |
673 | if (opcodes->arch == cpuxgate) |
674 | { | |
675 | if (opcodes->format & (M68XG_OP_IMM3 | M68XG_OP_R | M68XG_OP_REL9 | |
676 | | M68XG_OP_REL10 )) | |
677 | expect = 1; | |
678 | else if (opcodes->format & (M68XG_OP_R_R | M68XG_OP_R_IMM4 | |
679 | | M68XG_OP_R_IMM8 | M68XG_OP_R_IMM8)) | |
680 | expect = 2; | |
681 | else if (opcodes->format & (M68XG_OP_R_R_R | M68XG_OP_R_R_OFFS5 | |
682 | | M68XG_OP_RD_RB_RI | M68XG_OP_RD_RB_RIp | |
683 | | M68XG_OP_RD_RB_mRI)) | |
684 | expect = 3; | |
685 | } | |
686 | else | |
687 | { | |
688 | if (opcodes->format & M6811_OP_MASK) | |
689 | expect++; | |
690 | if (opcodes->format & M6811_OP_BITMASK) | |
691 | expect++; | |
692 | if (opcodes->format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
693 | expect++; | |
694 | if (opcodes->format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2)) | |
695 | expect++; | |
696 | /* Special case for call instruction. */ | |
697 | if ((opcodes->format & M6812_OP_PAGE) | |
698 | && !(opcodes->format & M6811_OP_IND16)) | |
699 | expect++; | |
700 | } | |
60bcf0fa NC |
701 | |
702 | if (expect < opc->min_operands) | |
703 | opc->min_operands = expect; | |
7bfda7eb | 704 | if (IS_CALL_SYMBOL (opcodes->format)) |
6927f982 | 705 | expect++; |
60bcf0fa NC |
706 | if (expect > opc->max_operands) |
707 | opc->max_operands = expect; | |
708 | } | |
709 | opc++; | |
710 | m68hc11_nb_opcode_defs = opc - m68hc11_opcode_defs; | |
711 | ||
712 | if (flag_print_opcodes) | |
713 | { | |
714 | print_opcode_list (); | |
715 | exit (EXIT_SUCCESS); | |
716 | } | |
717 | } | |
718 | ||
719 | void | |
ca43c854 | 720 | m68hc11_init_after_args (void) |
60bcf0fa NC |
721 | { |
722 | } | |
60bcf0fa NC |
723 | \f |
724 | /* Builtin help. */ | |
725 | ||
726 | /* Return a string that represents the operand format for the instruction. | |
727 | When example is true, this generates an example of operand. This is used | |
728 | to give an example and also to generate a test. */ | |
6927f982 | 729 | |
60bcf0fa | 730 | static char * |
ca43c854 | 731 | print_opcode_format (struct m68hc11_opcode *opcode, int example) |
60bcf0fa NC |
732 | { |
733 | static char buf[128]; | |
734 | int format = opcode->format; | |
735 | char *p; | |
736 | ||
737 | p = buf; | |
738 | buf[0] = 0; | |
60bcf0fa | 739 | |
6927f982 | 740 | if (current_architecture == cpuxgate) |
60bcf0fa | 741 | { |
6927f982 NC |
742 | if (format & M68XG_OP_IMM3) |
743 | { | |
744 | if (example) | |
745 | sprintf (p, "#%d", rand () & 0x007); | |
746 | else | |
747 | strcpy (p, _("imm3")); | |
748 | p = &p[strlen (p)]; | |
749 | } | |
750 | else if (format & M68XG_OP_R) | |
751 | { | |
752 | if (example) | |
753 | sprintf (p, "R%d", rand () & 0x07); | |
754 | else | |
755 | strcpy (p, _("RD")); | |
756 | p = &p[strlen (p)]; | |
757 | } | |
758 | else if (format & M68XG_OP_R_R) | |
759 | { | |
760 | if (example) | |
761 | sprintf (p, "R%d,R%d", rand () & 0x07, rand () & 0x07); | |
762 | else | |
763 | strcpy (p, _("RD,RS")); | |
764 | p = &p[strlen (p)]; | |
765 | } | |
766 | else if (format & M68XG_OP_R_IMM4) | |
767 | { | |
768 | if (example) | |
769 | sprintf (p, "R%d,#%d", rand () & 0x07, rand () & 0x0f); | |
770 | else | |
771 | strcpy (p, _("RI, #imm4")); | |
772 | p = &p[strlen (p)]; | |
773 | } | |
774 | else if (format & M68XG_OP_R_R_R) | |
775 | { | |
776 | if (example) | |
777 | sprintf (p, "R%d,R%d,R%d", rand () & 0x07, rand () & 0x07, rand () & 0x07); | |
778 | else | |
779 | strcpy (p, "RD,RS1,RS2"); | |
780 | p = &p[strlen (p)]; | |
781 | } | |
782 | else if (format & M68XG_OP_REL9) | |
783 | { | |
784 | if (example) | |
785 | sprintf (p, "%d", rand () & 0x1FF); | |
786 | else | |
787 | strcpy (p, "<rel9>"); | |
788 | p = &p[strlen (p)]; | |
789 | } | |
790 | else if (format & M68XG_OP_REL10) | |
791 | { | |
792 | if (example) | |
793 | sprintf (p, "%d", rand () & 0x3FF); | |
794 | else | |
795 | strcpy (p, "<rel10>"); | |
796 | p = &p[strlen (p)]; | |
797 | } | |
798 | else if (format & M68XG_OP_R_R_OFFS5) | |
799 | { | |
800 | if (example) | |
801 | sprintf (p, "R%d, (R%d, #0x%x)", rand () & 0x07, rand () & 0x07, rand () & 0x1f); | |
802 | else | |
803 | strcpy (p, _("RD, (RI,#offs5)")); | |
804 | p = &p[strlen (p)]; | |
805 | } | |
806 | else if (format & M68XG_OP_RD_RB_RI) | |
807 | { | |
808 | if (example) | |
809 | sprintf (p, "R%d, (R%d, R%d)", rand () & 0x07, rand () & 0x07, rand () & 0x07); | |
810 | else | |
811 | strcpy (p, "RD, (RB, RI)"); | |
812 | p = &p[strlen (p)]; | |
813 | } | |
814 | else if (format & M68XG_OP_RD_RB_RIp) | |
815 | { | |
816 | if (example) | |
817 | sprintf (p, "R%d, (R%d, R%d+)", rand () & 0x07, rand () & 0x07, rand () & 0x07); | |
818 | else | |
819 | strcpy (p, "RD, (RB, RI+)"); | |
820 | p = &p[strlen (p)]; | |
821 | } | |
822 | else if (format & M68XG_OP_RD_RB_mRI) | |
823 | { | |
824 | if (example) | |
825 | sprintf (p, "R%d, (R%d, -R%d)", rand () & 0x07, rand () & 0x07, rand () & 0x07); | |
826 | else | |
827 | strcpy (p, "RD, (RB, -RI)"); | |
828 | p = &p[strlen (p)]; | |
829 | } | |
830 | else if (format & M68XG_OP_R_IMM8) | |
831 | { | |
832 | if (example) | |
833 | sprintf (p, "R%d, #0x%x", rand () & 0x07, rand () & 0xff); | |
834 | else | |
835 | strcpy (p, "RD, #imm8"); | |
836 | p = &p[strlen (p)]; | |
837 | } | |
838 | else if (format & M68XG_OP_R_IMM16) | |
839 | { | |
840 | if (example) | |
841 | sprintf (p, "R%d, #0x%x", rand () & 0x07, rand () & 0xffff); | |
842 | else | |
843 | strcpy (p, "RD, #imm16"); | |
844 | p = &p[strlen (p)]; | |
845 | } | |
60bcf0fa | 846 | } |
6927f982 | 847 | else |
60bcf0fa | 848 | { |
60bcf0fa | 849 | |
6927f982 NC |
850 | if (format & M6811_OP_IMM8) |
851 | { | |
852 | if (example) | |
853 | sprintf (p, "#%d", rand () & 0x0FF); | |
854 | else | |
855 | strcpy (p, _("#<imm8>")); | |
856 | p = &p[strlen (p)]; | |
857 | } | |
60bcf0fa | 858 | |
6927f982 NC |
859 | if (format & M6811_OP_IMM16) |
860 | { | |
861 | if (example) | |
862 | sprintf (p, "#%d", rand () & 0x0FFFF); | |
863 | else | |
864 | strcpy (p, _("#<imm16>")); | |
865 | p = &p[strlen (p)]; | |
866 | } | |
60bcf0fa | 867 | |
6927f982 NC |
868 | if (format & M6811_OP_IX) |
869 | { | |
870 | if (example) | |
871 | sprintf (p, "%d,X", rand () & 0x0FF); | |
872 | else | |
873 | strcpy (p, _("<imm8>,X")); | |
874 | p = &p[strlen (p)]; | |
875 | } | |
7bfda7eb | 876 | |
6927f982 NC |
877 | if (format & M6811_OP_IY) |
878 | { | |
879 | if (example) | |
880 | sprintf (p, "%d,X", rand () & 0x0FF); | |
881 | else | |
882 | strcpy (p, _("<imm8>,X")); | |
883 | p = &p[strlen (p)]; | |
884 | } | |
60bcf0fa | 885 | |
6927f982 NC |
886 | if (format & M6812_OP_IDX) |
887 | { | |
888 | if (example) | |
889 | sprintf (p, "%d,X", rand () & 0x0FF); | |
890 | else | |
891 | strcpy (p, "n,r"); | |
892 | p = &p[strlen (p)]; | |
893 | } | |
60bcf0fa | 894 | |
6927f982 NC |
895 | if (format & M6812_OP_PAGE) |
896 | { | |
897 | if (example) | |
898 | sprintf (p, ", %d", rand () & 0x0FF); | |
899 | else | |
900 | strcpy (p, ", <page>"); | |
901 | p = &p[strlen (p)]; | |
902 | } | |
60bcf0fa | 903 | |
6927f982 NC |
904 | if (format & M6811_OP_DIRECT) |
905 | { | |
906 | if (example) | |
907 | sprintf (p, "*Z%d", rand () & 0x0FF); | |
908 | else | |
909 | strcpy (p, _("*<abs8>")); | |
910 | p = &p[strlen (p)]; | |
911 | } | |
60bcf0fa | 912 | |
6927f982 NC |
913 | if (format & M6811_OP_BITMASK) |
914 | { | |
915 | if (buf[0]) | |
916 | *p++ = ' '; | |
60bcf0fa | 917 | |
6927f982 NC |
918 | if (example) |
919 | sprintf (p, "#$%02x", rand () & 0x0FF); | |
920 | else | |
921 | strcpy (p, _("#<mask>")); | |
60bcf0fa | 922 | |
6927f982 NC |
923 | p = &p[strlen (p)]; |
924 | if (format & M6811_OP_JUMP_REL) | |
925 | *p++ = ' '; | |
926 | } | |
927 | ||
928 | if (format & M6811_OP_IND16) | |
60bcf0fa | 929 | { |
6927f982 NC |
930 | if (example) |
931 | sprintf (p, _("symbol%d"), rand () & 0x0FF); | |
60bcf0fa | 932 | else |
6927f982 NC |
933 | strcpy (p, _("<abs>")); |
934 | ||
935 | p = &p[strlen (p)]; | |
936 | } | |
937 | ||
938 | if (format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
939 | { | |
940 | if (example) | |
60bcf0fa | 941 | { |
6927f982 NC |
942 | if (format & M6811_OP_BITMASK) |
943 | { | |
944 | sprintf (p, ".+%d", rand () & 0x7F); | |
945 | } | |
946 | else | |
947 | { | |
948 | sprintf (p, "L%d", rand () & 0x0FF); | |
949 | } | |
60bcf0fa | 950 | } |
6927f982 NC |
951 | else |
952 | strcpy (p, _("<label>")); | |
60bcf0fa | 953 | } |
60bcf0fa | 954 | } |
60bcf0fa NC |
955 | return buf; |
956 | } | |
957 | ||
958 | /* Prints the list of instructions with the possible operands. */ | |
959 | static void | |
ca43c854 | 960 | print_opcode_list (void) |
60bcf0fa NC |
961 | { |
962 | int i; | |
963 | char *prev_name = ""; | |
964 | struct m68hc11_opcode *opcodes; | |
965 | int example = flag_print_opcodes == 2; | |
966 | ||
967 | if (example) | |
fafb6d17 NC |
968 | printf (_("# Example of `%s' instructions\n\t.sect .text\n_start:\n"), |
969 | default_cpu); | |
60bcf0fa NC |
970 | |
971 | opcodes = m68hc11_sorted_opcodes; | |
972 | ||
973 | /* Walk the list sorted on names (by md_begin). We only report | |
974 | one instruction per line, and we collect the different operand | |
975 | formats. */ | |
976 | for (i = 0; i < num_opcodes; i++, opcodes++) | |
977 | { | |
978 | char *fmt = print_opcode_format (opcodes, example); | |
979 | ||
980 | if (example) | |
981 | { | |
982 | printf ("L%d:\t", i); | |
983 | printf ("%s %s\n", opcodes->name, fmt); | |
984 | } | |
985 | else | |
986 | { | |
987 | if (strcmp (prev_name, opcodes->name)) | |
988 | { | |
989 | if (i > 0) | |
990 | printf ("\n"); | |
991 | ||
992 | printf ("%-5.5s ", opcodes->name); | |
993 | prev_name = (char *) opcodes->name; | |
994 | } | |
995 | if (fmt[0]) | |
996 | printf (" [%s]", fmt); | |
997 | } | |
998 | } | |
999 | printf ("\n"); | |
1000 | } | |
1001 | ||
60bcf0fa NC |
1002 | /* Print the instruction format. This operation is called when some |
1003 | instruction is not correct. Instruction format is printed as an | |
1004 | error message. */ | |
1005 | static void | |
ca43c854 | 1006 | print_insn_format (char *name) |
60bcf0fa NC |
1007 | { |
1008 | struct m68hc11_opcode_def *opc; | |
1009 | struct m68hc11_opcode *opcode; | |
1010 | char buf[128]; | |
1011 | ||
1012 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, name); | |
1013 | if (opc == NULL) | |
1014 | { | |
1015 | as_bad (_("Instruction `%s' is not recognized."), name); | |
1016 | return; | |
1017 | } | |
1018 | opcode = opc->opcode; | |
1019 | ||
1020 | as_bad (_("Instruction formats for `%s':"), name); | |
1021 | do | |
1022 | { | |
1023 | char *fmt; | |
1024 | ||
27302d63 | 1025 | fmt = print_opcode_format (opcode, 0); |
60bcf0fa NC |
1026 | sprintf (buf, "\t%-5.5s %s", opcode->name, fmt); |
1027 | ||
1028 | as_bad ("%s", buf); | |
1029 | opcode++; | |
1030 | } | |
1031 | while (strcmp (opcode->name, name) == 0); | |
1032 | } | |
60bcf0fa NC |
1033 | \f |
1034 | /* Analysis of 68HC11 and 68HC12 operands. */ | |
1035 | ||
1036 | /* reg_name_search() finds the register number given its name. | |
1037 | Returns the register number or REG_NONE on failure. */ | |
1038 | static register_id | |
ca43c854 | 1039 | reg_name_search (char *name) |
60bcf0fa NC |
1040 | { |
1041 | if (strcasecmp (name, "x") == 0 || strcasecmp (name, "ix") == 0) | |
1042 | return REG_X; | |
1043 | if (strcasecmp (name, "y") == 0 || strcasecmp (name, "iy") == 0) | |
1044 | return REG_Y; | |
1045 | if (strcasecmp (name, "a") == 0) | |
1046 | return REG_A; | |
1047 | if (strcasecmp (name, "b") == 0) | |
1048 | return REG_B; | |
1049 | if (strcasecmp (name, "d") == 0) | |
1050 | return REG_D; | |
1051 | if (strcasecmp (name, "sp") == 0) | |
1052 | return REG_SP; | |
1053 | if (strcasecmp (name, "pc") == 0) | |
1054 | return REG_PC; | |
1055 | if (strcasecmp (name, "ccr") == 0) | |
1056 | return REG_CCR; | |
6927f982 NC |
1057 | /* XGATE */ |
1058 | if (strcasecmp (name, "r0") == 0) | |
1059 | return REG_R0; | |
1060 | if (strcasecmp (name, "r1") == 0) | |
1061 | return REG_R1; | |
1062 | if (strcasecmp (name, "r2") == 0) | |
1063 | return REG_R2; | |
1064 | if (strcasecmp (name, "r3") == 0) | |
1065 | return REG_R3; | |
1066 | if (strcasecmp (name, "r4") == 0) | |
1067 | return REG_R4; | |
1068 | if (strcasecmp (name, "r5") == 0) | |
1069 | return REG_R5; | |
1070 | if (strcasecmp (name, "r6") == 0) | |
1071 | return REG_R6; | |
1072 | if (strcasecmp (name, "r7") == 0) | |
1073 | return REG_R7; | |
1074 | if (strcasecmp (name, "sp") == 0) | |
1075 | return REG_SP_XG; | |
1076 | if (strcasecmp (name, "pc") == 0) | |
1077 | return REG_PC_XG; | |
1078 | if (strcasecmp (name, "ccr") == 0) | |
1079 | return REG_CCR_XG; | |
60bcf0fa NC |
1080 | return REG_NONE; |
1081 | } | |
1082 | ||
1083 | static char * | |
ca43c854 | 1084 | skip_whites (char *p) |
60bcf0fa NC |
1085 | { |
1086 | while (*p == ' ' || *p == '\t') | |
1087 | p++; | |
1088 | ||
1089 | return p; | |
1090 | } | |
1091 | ||
fafb6d17 | 1092 | /* Check the string at input_line_pointer |
60bcf0fa NC |
1093 | to see if it is a valid register name. */ |
1094 | static register_id | |
ca43c854 | 1095 | register_name (void) |
60bcf0fa NC |
1096 | { |
1097 | register_id reg_number; | |
1098 | char c, *p = input_line_pointer; | |
1099 | ||
1100 | if (!is_name_beginner (*p++)) | |
1101 | return REG_NONE; | |
1102 | ||
1103 | while (is_part_of_name (*p++)) | |
1104 | continue; | |
1105 | ||
1106 | c = *--p; | |
1107 | if (c) | |
1108 | *p++ = 0; | |
1109 | ||
fafb6d17 | 1110 | /* Look to see if it's in the register table. */ |
60bcf0fa NC |
1111 | reg_number = reg_name_search (input_line_pointer); |
1112 | if (reg_number != REG_NONE) | |
1113 | { | |
1114 | if (c) | |
1115 | *--p = c; | |
1116 | ||
1117 | input_line_pointer = p; | |
1118 | return reg_number; | |
1119 | } | |
1120 | if (c) | |
1121 | *--p = c; | |
1122 | ||
1123 | return reg_number; | |
1124 | } | |
577300ce SC |
1125 | #define M6811_OP_CALL_ADDR 0x00800000 |
1126 | #define M6811_OP_PAGE_ADDR 0x04000000 | |
60bcf0fa | 1127 | |
fafb6d17 | 1128 | /* Parse a string of operands and return an array of expressions. |
60bcf0fa | 1129 | |
7bfda7eb SC |
1130 | Operand mode[0] mode[1] exp[0] exp[1] |
1131 | #n M6811_OP_IMM16 - O_* | |
1132 | *<exp> M6811_OP_DIRECT - O_* | |
1133 | .{+-}<exp> M6811_OP_JUMP_REL - O_* | |
1134 | <exp> M6811_OP_IND16 - O_* | |
1135 | ,r N,r M6812_OP_IDX M6812_OP_REG O_constant O_register | |
1136 | n,-r M6812_PRE_DEC M6812_OP_REG O_constant O_register | |
1137 | n,+r M6812_PRE_INC " " | |
1138 | n,r- M6812_POST_DEC " " | |
1139 | n,r+ M6812_POST_INC " " | |
1140 | A,r B,r D,r M6811_OP_REG M6812_OP_REG O_register O_register | |
1141 | [D,r] M6811_OP_D_IDX M6812_OP_REG O_register O_register | |
1142 | [n,r] M6811_OP_D_IDX_2 M6812_OP_REG O_constant O_register */ | |
60bcf0fa | 1143 | static int |
ca43c854 | 1144 | get_operand (operand *oper, int which, long opmode) |
60bcf0fa NC |
1145 | { |
1146 | char *p = input_line_pointer; | |
1147 | int mode; | |
1148 | register_id reg; | |
1149 | ||
1150 | oper->exp.X_op = O_absent; | |
1151 | oper->reg1 = REG_NONE; | |
1152 | oper->reg2 = REG_NONE; | |
1153 | mode = M6811_OP_NONE; | |
1154 | ||
1155 | p = skip_whites (p); | |
1156 | ||
1157 | if (*p == 0 || *p == '\n' || *p == '\r') | |
1158 | { | |
1159 | input_line_pointer = p; | |
1160 | return 0; | |
1161 | } | |
1162 | ||
1163 | if (*p == '*' && (opmode & (M6811_OP_DIRECT | M6811_OP_IND16))) | |
1164 | { | |
1165 | mode = M6811_OP_DIRECT; | |
1166 | p++; | |
1167 | } | |
1168 | else if (*p == '#') | |
1169 | { | |
1170 | if (!(opmode & (M6811_OP_IMM8 | M6811_OP_IMM16 | M6811_OP_BITMASK))) | |
1171 | { | |
1172 | as_bad (_("Immediate operand is not allowed for operand %d."), | |
fafb6d17 | 1173 | which); |
60bcf0fa NC |
1174 | return -1; |
1175 | } | |
1176 | ||
1177 | mode = M6811_OP_IMM16; | |
1178 | p++; | |
1179 | if (strncmp (p, "%hi", 3) == 0) | |
1180 | { | |
1181 | p += 3; | |
1182 | mode |= M6811_OP_HIGH_ADDR; | |
1183 | } | |
1184 | else if (strncmp (p, "%lo", 3) == 0) | |
1185 | { | |
1186 | p += 3; | |
1187 | mode |= M6811_OP_LOW_ADDR; | |
1188 | } | |
577300ce SC |
1189 | /* %page modifier is used to obtain only the page number |
1190 | of the address of a function. */ | |
1191 | else if (strncmp (p, "%page", 5) == 0) | |
1192 | { | |
1193 | p += 5; | |
1194 | mode |= M6811_OP_PAGE_ADDR; | |
1195 | } | |
1196 | ||
1197 | /* %addr modifier is used to obtain the physical address part | |
1198 | of the function (16-bit). For 68HC12 the function will be | |
1199 | mapped in the 16K window at 0x8000 and the value will be | |
1200 | within that window (although the function address may not fit | |
1201 | in 16-bit). See bfd/elf32-m68hc12.c for the translation. */ | |
1202 | else if (strncmp (p, "%addr", 5) == 0) | |
1203 | { | |
1204 | p += 5; | |
1205 | mode |= M6811_OP_CALL_ADDR; | |
1206 | } | |
60bcf0fa NC |
1207 | } |
1208 | else if (*p == '.' && (p[1] == '+' || p[1] == '-')) | |
1209 | { | |
1210 | p++; | |
1211 | mode = M6811_OP_JUMP_REL; | |
1212 | } | |
1213 | else if (*p == '[') | |
1214 | { | |
1215 | if (current_architecture & cpu6811) | |
1216 | as_bad (_("Indirect indexed addressing is not valid for 68HC11.")); | |
1217 | ||
1218 | p++; | |
7bfda7eb | 1219 | mode = M6812_OP_D_IDX; |
60bcf0fa NC |
1220 | p = skip_whites (p); |
1221 | } | |
1222 | else if (*p == ',') /* Special handling of ,x and ,y. */ | |
1223 | { | |
1224 | p++; | |
1225 | input_line_pointer = p; | |
1226 | ||
1227 | reg = register_name (); | |
1228 | if (reg != REG_NONE) | |
1229 | { | |
1230 | oper->reg1 = reg; | |
1231 | oper->exp.X_op = O_constant; | |
1232 | oper->exp.X_add_number = 0; | |
1233 | oper->mode = M6812_OP_IDX; | |
1234 | return 1; | |
1235 | } | |
1236 | as_bad (_("Spurious `,' or bad indirect register addressing mode.")); | |
1237 | return -1; | |
1238 | } | |
577300ce SC |
1239 | /* Handle 68HC12 page specification in 'call foo,%page(bar)'. */ |
1240 | else if ((opmode & M6812_OP_PAGE) && strncmp (p, "%page", 5) == 0) | |
1241 | { | |
1242 | p += 5; | |
1243 | mode = M6811_OP_PAGE_ADDR | M6812_OP_PAGE | M6811_OP_IND16; | |
1244 | } | |
60bcf0fa NC |
1245 | input_line_pointer = p; |
1246 | ||
7bfda7eb | 1247 | if (mode == M6811_OP_NONE || mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1248 | reg = register_name (); |
1249 | else | |
1250 | reg = REG_NONE; | |
1251 | ||
1252 | if (reg != REG_NONE) | |
1253 | { | |
1254 | p = skip_whites (input_line_pointer); | |
7bfda7eb | 1255 | if (*p == ']' && mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1256 | { |
1257 | as_bad | |
1258 | (_("Missing second register or offset for indexed-indirect mode.")); | |
1259 | return -1; | |
1260 | } | |
1261 | ||
1262 | oper->reg1 = reg; | |
1263 | oper->mode = mode | M6812_OP_REG; | |
1264 | if (*p != ',') | |
1265 | { | |
7bfda7eb | 1266 | if (mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1267 | { |
1268 | as_bad (_("Missing second register for indexed-indirect mode.")); | |
1269 | return -1; | |
1270 | } | |
1271 | return 1; | |
1272 | } | |
1273 | ||
1274 | p++; | |
1275 | input_line_pointer = p; | |
1276 | reg = register_name (); | |
1277 | if (reg != REG_NONE) | |
1278 | { | |
1279 | p = skip_whites (input_line_pointer); | |
7bfda7eb | 1280 | if (mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1281 | { |
1282 | if (*p != ']') | |
1283 | { | |
1284 | as_bad (_("Missing `]' to close indexed-indirect mode.")); | |
1285 | return -1; | |
1286 | } | |
1287 | p++; | |
7bfda7eb | 1288 | oper->mode = M6812_OP_D_IDX; |
60bcf0fa NC |
1289 | } |
1290 | input_line_pointer = p; | |
1291 | ||
1292 | oper->reg2 = reg; | |
1293 | return 1; | |
1294 | } | |
1295 | return 1; | |
1296 | } | |
1297 | ||
1298 | /* In MRI mode, isolate the operand because we can't distinguish | |
1299 | operands from comments. */ | |
1300 | if (flag_mri) | |
1301 | { | |
1302 | char c = 0; | |
1303 | ||
1304 | p = skip_whites (p); | |
1305 | while (*p && *p != ' ' && *p != '\t') | |
1306 | p++; | |
1307 | ||
1308 | if (*p) | |
1309 | { | |
1310 | c = *p; | |
1311 | *p = 0; | |
1312 | } | |
1313 | ||
1314 | /* Parse as an expression. */ | |
1315 | expression (&oper->exp); | |
1316 | ||
1317 | if (c) | |
1318 | { | |
1319 | *p = c; | |
1320 | } | |
1321 | } | |
1322 | else | |
1323 | { | |
1324 | expression (&oper->exp); | |
1325 | } | |
1326 | ||
1327 | if (oper->exp.X_op == O_illegal) | |
1328 | { | |
1329 | as_bad (_("Illegal operand.")); | |
1330 | return -1; | |
1331 | } | |
1332 | else if (oper->exp.X_op == O_absent) | |
1333 | { | |
1334 | as_bad (_("Missing operand.")); | |
1335 | return -1; | |
1336 | } | |
1337 | ||
1338 | p = input_line_pointer; | |
1339 | ||
1340 | if (mode == M6811_OP_NONE || mode == M6811_OP_DIRECT | |
7bfda7eb | 1341 | || mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1342 | { |
1343 | p = skip_whites (input_line_pointer); | |
1344 | ||
1345 | if (*p == ',') | |
1346 | { | |
098f2ec3 KH |
1347 | int possible_mode = M6811_OP_NONE; |
1348 | char *old_input_line; | |
7bfda7eb SC |
1349 | |
1350 | old_input_line = p; | |
60bcf0fa NC |
1351 | p++; |
1352 | ||
1353 | /* 68HC12 pre increment or decrement. */ | |
1354 | if (mode == M6811_OP_NONE) | |
1355 | { | |
1356 | if (*p == '-') | |
1357 | { | |
ae3e85dd | 1358 | possible_mode = M6812_PRE_DEC; |
60bcf0fa | 1359 | p++; |
60bcf0fa NC |
1360 | } |
1361 | else if (*p == '+') | |
1362 | { | |
ae3e85dd | 1363 | possible_mode = M6812_PRE_INC; |
60bcf0fa | 1364 | p++; |
60bcf0fa NC |
1365 | } |
1366 | p = skip_whites (p); | |
1367 | } | |
1368 | input_line_pointer = p; | |
1369 | reg = register_name (); | |
1370 | ||
098f2ec3 KH |
1371 | /* Backtrack if we have a valid constant expression and |
1372 | it does not correspond to the offset of the 68HC12 indexed | |
1373 | addressing mode (as in N,x). */ | |
1374 | if (reg == REG_NONE && mode == M6811_OP_NONE | |
1375 | && possible_mode != M6811_OP_NONE) | |
1376 | { | |
1377 | oper->mode = M6811_OP_IND16 | M6811_OP_JUMP_REL; | |
1378 | input_line_pointer = skip_whites (old_input_line); | |
1379 | return 1; | |
1380 | } | |
1381 | ||
1382 | if (possible_mode != M6811_OP_NONE) | |
1383 | mode = possible_mode; | |
1384 | ||
1385 | if ((current_architecture & cpu6811) | |
1386 | && possible_mode != M6811_OP_NONE) | |
1387 | as_bad (_("Pre-increment mode is not valid for 68HC11")); | |
fafb6d17 | 1388 | /* Backtrack. */ |
60bcf0fa NC |
1389 | if (which == 0 && opmode & M6812_OP_IDX_P2 |
1390 | && reg != REG_X && reg != REG_Y | |
1391 | && reg != REG_PC && reg != REG_SP) | |
1392 | { | |
1393 | reg = REG_NONE; | |
1394 | input_line_pointer = p; | |
1395 | } | |
1396 | ||
1397 | if (reg == REG_NONE && mode != M6811_OP_DIRECT | |
1398 | && !(mode == M6811_OP_NONE && opmode & M6811_OP_IND16)) | |
1399 | { | |
1400 | as_bad (_("Wrong register in register indirect mode.")); | |
1401 | return -1; | |
1402 | } | |
7bfda7eb | 1403 | if (mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1404 | { |
1405 | p = skip_whites (input_line_pointer); | |
1406 | if (*p++ != ']') | |
1407 | { | |
1408 | as_bad (_("Missing `]' to close register indirect operand.")); | |
1409 | return -1; | |
1410 | } | |
1411 | input_line_pointer = p; | |
7bfda7eb SC |
1412 | oper->reg1 = reg; |
1413 | oper->mode = M6812_OP_D_IDX_2; | |
1414 | return 1; | |
60bcf0fa NC |
1415 | } |
1416 | if (reg != REG_NONE) | |
1417 | { | |
1418 | oper->reg1 = reg; | |
1419 | if (mode == M6811_OP_NONE) | |
1420 | { | |
1421 | p = input_line_pointer; | |
1422 | if (*p == '-') | |
1423 | { | |
1424 | mode = M6812_POST_DEC; | |
1425 | p++; | |
1426 | if (current_architecture & cpu6811) | |
1427 | as_bad | |
1428 | (_("Post-decrement mode is not valid for 68HC11.")); | |
1429 | } | |
1430 | else if (*p == '+') | |
1431 | { | |
1432 | mode = M6812_POST_INC; | |
1433 | p++; | |
1434 | if (current_architecture & cpu6811) | |
1435 | as_bad | |
1436 | (_("Post-increment mode is not valid for 68HC11.")); | |
1437 | } | |
1438 | else | |
1439 | mode = M6812_OP_IDX; | |
1440 | ||
1441 | input_line_pointer = p; | |
1442 | } | |
1443 | else | |
1444 | mode |= M6812_OP_IDX; | |
1445 | ||
1446 | oper->mode = mode; | |
1447 | return 1; | |
1448 | } | |
7bfda7eb | 1449 | input_line_pointer = old_input_line; |
60bcf0fa NC |
1450 | } |
1451 | ||
1452 | if (mode == M6812_OP_D_IDX_2) | |
1453 | { | |
1454 | as_bad (_("Invalid indexed indirect mode.")); | |
1455 | return -1; | |
1456 | } | |
1457 | } | |
1458 | ||
1459 | /* If the mode is not known until now, this is either a label | |
1460 | or an indirect address. */ | |
1461 | if (mode == M6811_OP_NONE) | |
fafb6d17 | 1462 | mode = M6811_OP_IND16 | M6811_OP_JUMP_REL; |
60bcf0fa NC |
1463 | |
1464 | p = input_line_pointer; | |
1465 | while (*p == ' ' || *p == '\t') | |
1466 | p++; | |
1467 | input_line_pointer = p; | |
1468 | oper->mode = mode; | |
1469 | ||
1470 | return 1; | |
1471 | } | |
1472 | ||
1473 | #define M6812_AUTO_INC_DEC (M6812_PRE_INC | M6812_PRE_DEC \ | |
1474 | | M6812_POST_INC | M6812_POST_DEC) | |
1475 | ||
1476 | /* Checks that the number 'num' fits for a given mode. */ | |
1477 | static int | |
ca43c854 | 1478 | check_range (long num, int mode) |
60bcf0fa | 1479 | { |
6927f982 NC |
1480 | if (current_architecture == cpuxgate) |
1481 | { | |
1482 | switch (mode) | |
1483 | { | |
1484 | case M68XG_OP_IMM3: | |
1485 | return (num >= 0 && num <= 7) ? 1 : 0; | |
60bcf0fa | 1486 | |
6927f982 NC |
1487 | case M68XG_OP_R_IMM4: |
1488 | return (num >= 0 && num <= 15) ? 1 : 0; | |
60bcf0fa | 1489 | |
6927f982 NC |
1490 | case M68XG_OP_R_R_OFFS5: |
1491 | return (num >= 0 && num <= 31) ? 1 : 0; | |
60bcf0fa | 1492 | |
6927f982 NC |
1493 | case M68XG_OP_R_IMM8: |
1494 | return (num >= 0 && num <= 255) ? 1 : 0; | |
60bcf0fa | 1495 | |
6927f982 NC |
1496 | case M68XG_OP_R_IMM16: |
1497 | return (num >= 0 && num <= 65535) ? 1 : 0; | |
60bcf0fa | 1498 | |
6927f982 NC |
1499 | case M68XG_OP_B_MARKER: |
1500 | return (num >= -512 && num <= 511) ? 1 : 0; | |
60bcf0fa | 1501 | |
6927f982 NC |
1502 | case M68XG_OP_BRA_MARKER: |
1503 | return (num >= -1024 && num <= 1023) ? 1 : 0; | |
60bcf0fa | 1504 | |
6927f982 NC |
1505 | default: |
1506 | return 0; | |
1507 | } | |
1508 | } | |
1509 | else | |
1510 | { | |
1511 | /* Auto increment and decrement are ok for [-8..8] without 0. */ | |
1512 | if (mode & M6812_AUTO_INC_DEC) | |
1513 | return (num != 0 && num <= 8 && num >= -8); | |
60bcf0fa | 1514 | |
6927f982 NC |
1515 | /* The 68HC12 supports 5, 9 and 16-bit offsets. */ |
1516 | if (mode & (M6812_INDEXED_IND | M6812_INDEXED | M6812_OP_IDX)) | |
1517 | mode = M6811_OP_IND16; | |
60bcf0fa | 1518 | |
6927f982 NC |
1519 | if (mode & M6812_OP_JUMP_REL16) |
1520 | mode = M6811_OP_IND16; | |
1521 | ||
1522 | mode &= ~M6811_OP_BRANCH; | |
1523 | switch (mode) | |
1524 | { | |
1525 | case M6811_OP_IX: | |
1526 | case M6811_OP_IY: | |
1527 | case M6811_OP_DIRECT: | |
1528 | return (num >= 0 && num <= 255) ? 1 : 0; | |
1529 | ||
1530 | case M6811_OP_BITMASK: | |
1531 | case M6811_OP_IMM8: | |
1532 | case M6812_OP_PAGE: | |
1533 | return (((num & 0xFFFFFF00) == 0) || ((num & 0xFFFFFF00) == 0xFFFFFF00)) | |
1534 | ? 1 : 0; | |
1535 | ||
1536 | case M6811_OP_JUMP_REL: | |
1537 | return (num >= -128 && num <= 127) ? 1 : 0; | |
1538 | ||
1539 | case M6811_OP_IND16: | |
1540 | case M6811_OP_IND16 | M6812_OP_PAGE: | |
1541 | case M6811_OP_IMM16: | |
1542 | return (((num & 0xFFFF0000) == 0) || ((num & 0xFFFF0000) == 0xFFFF0000)) | |
1543 | ? 1 : 0; | |
1544 | ||
1545 | case M6812_OP_IBCC_MARKER: | |
1546 | case M6812_OP_TBCC_MARKER: | |
1547 | case M6812_OP_DBCC_MARKER: | |
1548 | return (num >= -256 && num <= 255) ? 1 : 0; | |
1549 | ||
1550 | case M6812_OP_TRAP_ID: | |
1551 | return ((num >= 0x30 && num <= 0x39) | |
1552 | || (num >= 0x40 && num <= 0x0ff)) ? 1 : 0; | |
1553 | ||
1554 | default: | |
1555 | return 0; | |
1556 | } | |
60bcf0fa NC |
1557 | } |
1558 | } | |
60bcf0fa NC |
1559 | \f |
1560 | /* Gas fixup generation. */ | |
1561 | ||
1562 | /* Put a 1 byte expression described by 'oper'. If this expression contains | |
1563 | unresolved symbols, generate an 8-bit fixup. */ | |
1564 | static void | |
ca43c854 | 1565 | fixup8 (expressionS *oper, int mode, int opmode) |
60bcf0fa NC |
1566 | { |
1567 | char *f; | |
1568 | ||
1569 | f = frag_more (1); | |
1570 | ||
1571 | if (oper->X_op == O_constant) | |
1572 | { | |
1573 | if (mode & M6812_OP_TRAP_ID | |
1574 | && !check_range (oper->X_add_number, M6812_OP_TRAP_ID)) | |
1575 | { | |
1576 | static char trap_id_warn_once = 0; | |
1577 | ||
1578 | as_bad (_("Trap id `%ld' is out of range."), oper->X_add_number); | |
1579 | if (trap_id_warn_once == 0) | |
1580 | { | |
1581 | trap_id_warn_once = 1; | |
1582 | as_bad (_("Trap id must be within [0x30..0x39] or [0x40..0xff].")); | |
1583 | } | |
1584 | } | |
1585 | ||
1586 | if (!(mode & M6812_OP_TRAP_ID) | |
1587 | && !check_range (oper->X_add_number, mode)) | |
1588 | { | |
1589 | as_bad (_("Operand out of 8-bit range: `%ld'."), oper->X_add_number); | |
1590 | } | |
1591 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FF, 1); | |
1592 | } | |
1593 | else if (oper->X_op != O_register) | |
1594 | { | |
1595 | if (mode & M6812_OP_TRAP_ID) | |
1596 | as_bad (_("The trap id must be a constant.")); | |
1597 | ||
1598 | if (mode == M6811_OP_JUMP_REL) | |
1599 | { | |
1600 | fixS *fixp; | |
1601 | ||
1602 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
b34976b6 | 1603 | oper, TRUE, BFD_RELOC_8_PCREL); |
60bcf0fa NC |
1604 | fixp->fx_pcrel_adjust = 1; |
1605 | } | |
1606 | else | |
1607 | { | |
577300ce SC |
1608 | fixS *fixp; |
1609 | int reloc; | |
1610 | ||
1611 | /* Now create an 8-bit fixup. If there was some %hi, %lo | |
1612 | or %page modifier, generate the reloc accordingly. */ | |
1613 | if (opmode & M6811_OP_HIGH_ADDR) | |
1614 | reloc = BFD_RELOC_M68HC11_HI8; | |
1615 | else if (opmode & M6811_OP_LOW_ADDR) | |
1616 | reloc = BFD_RELOC_M68HC11_LO8; | |
1617 | else if (opmode & M6811_OP_PAGE_ADDR) | |
1618 | reloc = BFD_RELOC_M68HC11_PAGE; | |
1619 | else | |
1620 | reloc = BFD_RELOC_8; | |
1621 | ||
1622 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
1623 | oper, FALSE, reloc); | |
1624 | if (reloc != BFD_RELOC_8) | |
1625 | fixp->fx_no_overflow = 1; | |
60bcf0fa NC |
1626 | } |
1627 | number_to_chars_bigendian (f, 0, 1); | |
1628 | } | |
1629 | else | |
1630 | { | |
1631 | as_fatal (_("Operand `%x' not recognized in fixup8."), oper->X_op); | |
1632 | } | |
1633 | } | |
1634 | ||
986c6f4b | 1635 | /* Put a 2 byte expression described by 'oper'. If this expression contains |
60bcf0fa NC |
1636 | unresolved symbols, generate a 16-bit fixup. */ |
1637 | static void | |
ca43c854 | 1638 | fixup16 (expressionS *oper, int mode, int opmode ATTRIBUTE_UNUSED) |
60bcf0fa NC |
1639 | { |
1640 | char *f; | |
1641 | ||
1642 | f = frag_more (2); | |
1643 | ||
1644 | if (oper->X_op == O_constant) | |
1645 | { | |
1646 | if (!check_range (oper->X_add_number, mode)) | |
1647 | { | |
1648 | as_bad (_("Operand out of 16-bit range: `%ld'."), | |
fafb6d17 | 1649 | oper->X_add_number); |
60bcf0fa NC |
1650 | } |
1651 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FFFF, 2); | |
1652 | } | |
1653 | else if (oper->X_op != O_register) | |
1654 | { | |
1655 | fixS *fixp; | |
577300ce SC |
1656 | int reloc; |
1657 | ||
1658 | if ((opmode & M6811_OP_CALL_ADDR) && (mode & M6811_OP_IMM16)) | |
1659 | reloc = BFD_RELOC_M68HC11_LO16; | |
1660 | else if (mode & M6812_OP_JUMP_REL16) | |
1661 | reloc = BFD_RELOC_16_PCREL; | |
1662 | else if (mode & M6812_OP_PAGE) | |
1663 | reloc = BFD_RELOC_M68HC11_LO16; | |
1664 | else | |
1665 | reloc = BFD_RELOC_16; | |
60bcf0fa NC |
1666 | |
1667 | /* Now create a 16-bit fixup. */ | |
1668 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 2, | |
1669 | oper, | |
577300ce SC |
1670 | reloc == BFD_RELOC_16_PCREL, |
1671 | reloc); | |
60bcf0fa | 1672 | number_to_chars_bigendian (f, 0, 2); |
577300ce | 1673 | if (reloc == BFD_RELOC_16_PCREL) |
60bcf0fa | 1674 | fixp->fx_pcrel_adjust = 2; |
577300ce SC |
1675 | if (reloc == BFD_RELOC_M68HC11_LO16) |
1676 | fixp->fx_no_overflow = 1; | |
60bcf0fa NC |
1677 | } |
1678 | else | |
1679 | { | |
1680 | as_fatal (_("Operand `%x' not recognized in fixup16."), oper->X_op); | |
1681 | } | |
1682 | } | |
7bfda7eb SC |
1683 | |
1684 | /* Put a 3 byte expression described by 'oper'. If this expression contains | |
1685 | unresolved symbols, generate a 24-bit fixup. */ | |
1686 | static void | |
ca43c854 | 1687 | fixup24 (expressionS *oper, int mode, int opmode ATTRIBUTE_UNUSED) |
7bfda7eb SC |
1688 | { |
1689 | char *f; | |
1690 | ||
1691 | f = frag_more (3); | |
1692 | ||
1693 | if (oper->X_op == O_constant) | |
1694 | { | |
1695 | if (!check_range (oper->X_add_number, mode)) | |
1696 | { | |
1697 | as_bad (_("Operand out of 16-bit range: `%ld'."), | |
1698 | oper->X_add_number); | |
1699 | } | |
1700 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FFFFFF, 3); | |
1701 | } | |
1702 | else if (oper->X_op != O_register) | |
1703 | { | |
7bfda7eb | 1704 | /* Now create a 24-bit fixup. */ |
87975d2a AM |
1705 | fix_new_exp (frag_now, f - frag_now->fr_literal, 3, |
1706 | oper, FALSE, BFD_RELOC_M68HC11_24); | |
7bfda7eb SC |
1707 | number_to_chars_bigendian (f, 0, 3); |
1708 | } | |
1709 | else | |
1710 | { | |
1711 | as_fatal (_("Operand `%x' not recognized in fixup16."), oper->X_op); | |
1712 | } | |
1713 | } | |
6927f982 NC |
1714 | |
1715 | /* XGATE Put a 1 byte expression described by 'oper'. If this expression | |
1716 | containts unresolved symbols, generate an 8-bit fixup. */ | |
1717 | static void | |
1718 | fixup8_xg (expressionS *oper, int mode, int opmode) | |
1719 | { | |
1720 | char *f; | |
1721 | ||
1722 | f = frag_more (1); | |
1723 | ||
1724 | if (oper->X_op == O_constant) | |
1725 | { | |
1726 | fixS *fixp; | |
1727 | int reloc; | |
1728 | ||
1729 | if ((opmode & M6811_OP_HIGH_ADDR) || (opmode & M6811_OP_LOW_ADDR)) | |
1730 | { | |
1731 | if (opmode & M6811_OP_HIGH_ADDR) | |
1732 | reloc = BFD_RELOC_M68HC11_HI8; | |
1733 | else | |
1734 | reloc = BFD_RELOC_M68HC11_LO8; | |
1735 | ||
1736 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
1737 | oper, FALSE, reloc); | |
1738 | fixp->fx_no_overflow = 1; | |
1739 | number_to_chars_bigendian (f, 0, 1); | |
1740 | } | |
1741 | else | |
1742 | { | |
1743 | if (!(check_range (oper->X_add_number, mode))) | |
1744 | as_bad (_("Operand out of 8-bit range: `%ld'."), | |
1745 | oper->X_add_number); | |
1746 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FF, 1); | |
1747 | } | |
1748 | } | |
1749 | else if (oper->X_op != O_register) | |
1750 | { | |
1751 | if (mode == M68XG_OP_REL9) | |
1752 | { | |
1753 | fixS *fixp; | |
1754 | ||
1755 | /* Future improvement: | |
1756 | This fixup/reloc isn't adding on constants to symbols. */ | |
1757 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal -1, 2, | |
1758 | oper, TRUE, BFD_RELOC_M68HC12_9_PCREL); | |
1759 | fixp->fx_pcrel_adjust = 1; | |
1760 | } | |
1761 | else if (mode == M68XG_OP_REL10) | |
1762 | { | |
1763 | fixS *fixp; | |
1764 | ||
1765 | /* Future improvement: | |
1766 | This fixup/reloc isn't adding on constants to symbols. */ | |
1767 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal -1, 2, | |
1768 | oper, TRUE, BFD_RELOC_M68HC12_10_PCREL); | |
1769 | fixp->fx_pcrel_adjust = 1; | |
1770 | } | |
1771 | else | |
1772 | { | |
1773 | fixS *fixp; | |
1774 | int reloc; | |
1775 | ||
1776 | /* Now create an 8-bit fixup. If there was some %hi, %lo | |
1777 | modifier, generate the reloc accordingly. */ | |
1778 | if (opmode & M6811_OP_HIGH_ADDR) | |
1779 | reloc = BFD_RELOC_M68HC11_HI8; | |
1780 | else if (opmode & M6811_OP_LOW_ADDR) | |
1781 | reloc = BFD_RELOC_M68HC11_LO8; | |
1782 | else | |
1783 | reloc = BFD_RELOC_8; | |
1784 | ||
1785 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
1786 | oper, FALSE, reloc); | |
1787 | if (reloc != BFD_RELOC_8) | |
1788 | fixp->fx_no_overflow = 1; | |
1789 | } | |
1790 | number_to_chars_bigendian (f, 0, 1); | |
1791 | } | |
1792 | else | |
1793 | as_fatal (_("Operand `%x' not recognized in fixup8."), oper->X_op); | |
1794 | } | |
60bcf0fa NC |
1795 | \f |
1796 | /* 68HC11 and 68HC12 code generation. */ | |
1797 | ||
1798 | /* Translate the short branch/bsr instruction into a long branch. */ | |
6927f982 | 1799 | |
60bcf0fa | 1800 | static unsigned char |
ca43c854 | 1801 | convert_branch (unsigned char code) |
60bcf0fa NC |
1802 | { |
1803 | if (IS_OPCODE (code, M6812_BSR)) | |
1804 | return M6812_JSR; | |
1805 | else if (IS_OPCODE (code, M6811_BSR)) | |
1806 | return M6811_JSR; | |
1807 | else if (IS_OPCODE (code, M6811_BRA)) | |
1808 | return (current_architecture & cpu6812) ? M6812_JMP : M6811_JMP; | |
1809 | else | |
1810 | as_fatal (_("Unexpected branch conversion with `%x'"), code); | |
1811 | ||
1812 | /* Keep gcc happy. */ | |
1813 | return M6811_JSR; | |
1814 | } | |
1815 | ||
1816 | /* Start a new insn that contains at least 'size' bytes. Record the | |
1817 | line information of that insn in the dwarf2 debug sections. */ | |
fafb6d17 | 1818 | static char * |
ca43c854 | 1819 | m68hc11_new_insn (int size) |
60bcf0fa | 1820 | { |
fafb6d17 | 1821 | char *f; |
60bcf0fa NC |
1822 | |
1823 | f = frag_more (size); | |
1824 | ||
4dc7ead9 | 1825 | dwarf2_emit_insn (size); |
fafb6d17 | 1826 | |
60bcf0fa NC |
1827 | return f; |
1828 | } | |
1829 | ||
1830 | /* Builds a jump instruction (bra, bcc, bsr). */ | |
1831 | static void | |
ca43c854 SC |
1832 | build_jump_insn (struct m68hc11_opcode *opcode, operand operands[], |
1833 | int nb_operands, int jmp_mode) | |
60bcf0fa NC |
1834 | { |
1835 | unsigned char code; | |
60bcf0fa NC |
1836 | char *f; |
1837 | unsigned long n; | |
1838 | ||
67c1ffbe | 1839 | /* The relative branch conversion is not supported for |
60bcf0fa | 1840 | brclr and brset. */ |
9c2799c2 NC |
1841 | gas_assert ((opcode->format & M6811_OP_BITMASK) == 0); |
1842 | gas_assert (nb_operands == 1); | |
1843 | gas_assert (operands[0].reg1 == REG_NONE && operands[0].reg2 == REG_NONE); | |
60bcf0fa NC |
1844 | |
1845 | code = opcode->opcode; | |
60bcf0fa NC |
1846 | |
1847 | n = operands[0].exp.X_add_number; | |
1848 | ||
1849 | /* Turn into a long branch: | |
1850 | - when force long branch option (and not for jbcc pseudos), | |
1851 | - when jbcc and the constant is out of -128..127 range, | |
1852 | - when branch optimization is allowed and branch out of range. */ | |
1853 | if ((jmp_mode == 0 && flag_force_long_jumps) | |
1854 | || (operands[0].exp.X_op == O_constant | |
1855 | && (!check_range (n, opcode->format) && | |
1370e33d | 1856 | (jmp_mode == 1 || flag_fixed_branches == 0)))) |
60bcf0fa | 1857 | { |
fd99afa7 | 1858 | fix_new (frag_now, frag_now_fix (), 0, |
e371935f SC |
1859 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); |
1860 | ||
60bcf0fa NC |
1861 | if (code == M6811_BSR || code == M6811_BRA || code == M6812_BSR) |
1862 | { | |
1863 | code = convert_branch (code); | |
1864 | ||
1865 | f = m68hc11_new_insn (1); | |
1866 | number_to_chars_bigendian (f, code, 1); | |
1867 | } | |
1868 | else if (current_architecture & cpu6812) | |
1869 | { | |
1870 | /* 68HC12: translate the bcc into a lbcc. */ | |
1871 | f = m68hc11_new_insn (2); | |
1872 | number_to_chars_bigendian (f, M6811_OPCODE_PAGE2, 1); | |
1873 | number_to_chars_bigendian (f + 1, code, 1); | |
1874 | fixup16 (&operands[0].exp, M6812_OP_JUMP_REL16, | |
1875 | M6812_OP_JUMP_REL16); | |
1876 | return; | |
1877 | } | |
1878 | else | |
1879 | { | |
1880 | /* 68HC11: translate the bcc into b!cc +3; jmp <L>. */ | |
1881 | f = m68hc11_new_insn (3); | |
1882 | code ^= 1; | |
1883 | number_to_chars_bigendian (f, code, 1); | |
1884 | number_to_chars_bigendian (f + 1, 3, 1); | |
1885 | number_to_chars_bigendian (f + 2, M6811_JMP, 1); | |
1886 | } | |
1887 | fixup16 (&operands[0].exp, M6811_OP_IND16, M6811_OP_IND16); | |
1888 | return; | |
1889 | } | |
1890 | ||
1891 | /* Branch with a constant that must fit in 8-bits. */ | |
1892 | if (operands[0].exp.X_op == O_constant) | |
1893 | { | |
1894 | if (!check_range (n, opcode->format)) | |
1895 | { | |
1896 | as_bad (_("Operand out of range for a relative branch: `%ld'"), | |
1897 | n); | |
1898 | } | |
1899 | else if (opcode->format & M6812_OP_JUMP_REL16) | |
1900 | { | |
1901 | f = m68hc11_new_insn (4); | |
1902 | number_to_chars_bigendian (f, M6811_OPCODE_PAGE2, 1); | |
1903 | number_to_chars_bigendian (f + 1, code, 1); | |
1904 | number_to_chars_bigendian (f + 2, n & 0x0ffff, 2); | |
1905 | } | |
1906 | else | |
1907 | { | |
1908 | f = m68hc11_new_insn (2); | |
1909 | number_to_chars_bigendian (f, code, 1); | |
1910 | number_to_chars_bigendian (f + 1, n & 0x0FF, 1); | |
1911 | } | |
1912 | } | |
1913 | else if (opcode->format & M6812_OP_JUMP_REL16) | |
1914 | { | |
fd99afa7 | 1915 | fix_new (frag_now, frag_now_fix (), 0, |
e371935f SC |
1916 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); |
1917 | ||
60bcf0fa NC |
1918 | f = m68hc11_new_insn (2); |
1919 | number_to_chars_bigendian (f, M6811_OPCODE_PAGE2, 1); | |
1920 | number_to_chars_bigendian (f + 1, code, 1); | |
1921 | fixup16 (&operands[0].exp, M6812_OP_JUMP_REL16, M6812_OP_JUMP_REL16); | |
1922 | } | |
1923 | else | |
1924 | { | |
91d6fa6a | 1925 | char *op; |
60bcf0fa | 1926 | |
fd99afa7 | 1927 | fix_new (frag_now, frag_now_fix (), 0, |
e371935f SC |
1928 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); |
1929 | ||
60bcf0fa | 1930 | /* Branch offset must fit in 8-bits, don't do some relax. */ |
1370e33d | 1931 | if (jmp_mode == 0 && flag_fixed_branches) |
60bcf0fa | 1932 | { |
91d6fa6a NC |
1933 | op = m68hc11_new_insn (1); |
1934 | number_to_chars_bigendian (op, code, 1); | |
60bcf0fa NC |
1935 | fixup8 (&operands[0].exp, M6811_OP_JUMP_REL, M6811_OP_JUMP_REL); |
1936 | } | |
1937 | ||
1938 | /* bra/bsr made be changed into jmp/jsr. */ | |
1939 | else if (code == M6811_BSR || code == M6811_BRA || code == M6812_BSR) | |
1940 | { | |
4fe7ef96 | 1941 | /* Allocate worst case storage. */ |
91d6fa6a NC |
1942 | op = m68hc11_new_insn (3); |
1943 | number_to_chars_bigendian (op, code, 1); | |
1944 | number_to_chars_bigendian (op + 1, 0, 1); | |
4fe7ef96 SC |
1945 | frag_variant (rs_machine_dependent, 1, 1, |
1946 | ENCODE_RELAX (STATE_PC_RELATIVE, STATE_UNDF), | |
1947 | operands[0].exp.X_add_symbol, (offsetT) n, | |
91d6fa6a | 1948 | op); |
60bcf0fa NC |
1949 | } |
1950 | else if (current_architecture & cpu6812) | |
1951 | { | |
91d6fa6a NC |
1952 | op = m68hc11_new_insn (2); |
1953 | number_to_chars_bigendian (op, code, 1); | |
1954 | number_to_chars_bigendian (op + 1, 0, 1); | |
60bcf0fa NC |
1955 | frag_var (rs_machine_dependent, 2, 2, |
1956 | ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_UNDF), | |
91d6fa6a | 1957 | operands[0].exp.X_add_symbol, (offsetT) n, op); |
60bcf0fa NC |
1958 | } |
1959 | else | |
1960 | { | |
91d6fa6a NC |
1961 | op = m68hc11_new_insn (2); |
1962 | number_to_chars_bigendian (op, code, 1); | |
1963 | number_to_chars_bigendian (op + 1, 0, 1); | |
60bcf0fa NC |
1964 | frag_var (rs_machine_dependent, 3, 3, |
1965 | ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_UNDF), | |
91d6fa6a | 1966 | operands[0].exp.X_add_symbol, (offsetT) n, op); |
60bcf0fa NC |
1967 | } |
1968 | } | |
1969 | } | |
1970 | ||
1971 | /* Builds a dbne/dbeq/tbne/tbeq instruction. */ | |
1972 | static void | |
ca43c854 SC |
1973 | build_dbranch_insn (struct m68hc11_opcode *opcode, operand operands[], |
1974 | int nb_operands, int jmp_mode) | |
60bcf0fa NC |
1975 | { |
1976 | unsigned char code; | |
60bcf0fa NC |
1977 | char *f; |
1978 | unsigned long n; | |
1979 | ||
67c1ffbe | 1980 | /* The relative branch conversion is not supported for |
60bcf0fa | 1981 | brclr and brset. */ |
9c2799c2 NC |
1982 | gas_assert ((opcode->format & M6811_OP_BITMASK) == 0); |
1983 | gas_assert (nb_operands == 2); | |
1984 | gas_assert (operands[0].reg1 != REG_NONE); | |
60bcf0fa NC |
1985 | |
1986 | code = opcode->opcode & 0x0FF; | |
60bcf0fa NC |
1987 | |
1988 | f = m68hc11_new_insn (1); | |
1989 | number_to_chars_bigendian (f, code, 1); | |
1990 | ||
1991 | n = operands[1].exp.X_add_number; | |
1992 | code = operands[0].reg1; | |
1993 | ||
1994 | if (operands[0].reg1 == REG_NONE || operands[0].reg1 == REG_CCR | |
1995 | || operands[0].reg1 == REG_PC) | |
1996 | as_bad (_("Invalid register for dbcc/tbcc instruction.")); | |
1997 | ||
1998 | if (opcode->format & M6812_OP_IBCC_MARKER) | |
1999 | code |= 0x80; | |
2000 | else if (opcode->format & M6812_OP_TBCC_MARKER) | |
2001 | code |= 0x40; | |
2002 | ||
2003 | if (!(opcode->format & M6812_OP_EQ_MARKER)) | |
2004 | code |= 0x20; | |
2005 | ||
2006 | /* Turn into a long branch: | |
2007 | - when force long branch option (and not for jbcc pseudos), | |
2008 | - when jdbcc and the constant is out of -256..255 range, | |
2009 | - when branch optimization is allowed and branch out of range. */ | |
2010 | if ((jmp_mode == 0 && flag_force_long_jumps) | |
2011 | || (operands[1].exp.X_op == O_constant | |
2012 | && (!check_range (n, M6812_OP_IBCC_MARKER) && | |
1370e33d | 2013 | (jmp_mode == 1 || flag_fixed_branches == 0)))) |
60bcf0fa NC |
2014 | { |
2015 | f = frag_more (2); | |
2016 | code ^= 0x20; | |
2017 | number_to_chars_bigendian (f, code, 1); | |
2018 | number_to_chars_bigendian (f + 1, M6812_JMP, 1); | |
2019 | fixup16 (&operands[0].exp, M6811_OP_IND16, M6811_OP_IND16); | |
2020 | return; | |
2021 | } | |
2022 | ||
2023 | /* Branch with a constant that must fit in 9-bits. */ | |
2024 | if (operands[1].exp.X_op == O_constant) | |
2025 | { | |
2026 | if (!check_range (n, M6812_OP_IBCC_MARKER)) | |
2027 | { | |
2028 | as_bad (_("Operand out of range for a relative branch: `%ld'"), | |
2029 | n); | |
2030 | } | |
2031 | else | |
2032 | { | |
2033 | if ((long) n < 0) | |
2034 | code |= 0x10; | |
2035 | ||
2036 | f = frag_more (2); | |
2037 | number_to_chars_bigendian (f, code, 1); | |
2038 | number_to_chars_bigendian (f + 1, n & 0x0FF, 1); | |
2039 | } | |
2040 | } | |
2041 | else | |
2042 | { | |
2043 | /* Branch offset must fit in 8-bits, don't do some relax. */ | |
1370e33d | 2044 | if (jmp_mode == 0 && flag_fixed_branches) |
60bcf0fa NC |
2045 | { |
2046 | fixup8 (&operands[0].exp, M6811_OP_JUMP_REL, M6811_OP_JUMP_REL); | |
2047 | } | |
2048 | ||
2049 | else | |
2050 | { | |
2051 | f = frag_more (2); | |
2052 | number_to_chars_bigendian (f, code, 1); | |
2053 | number_to_chars_bigendian (f + 1, 0, 1); | |
2054 | frag_var (rs_machine_dependent, 3, 3, | |
2055 | ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_UNDF), | |
2056 | operands[1].exp.X_add_symbol, (offsetT) n, f); | |
2057 | } | |
2058 | } | |
2059 | } | |
2060 | ||
2061 | #define OP_EXTENDED (M6811_OP_PAGE2 | M6811_OP_PAGE3 | M6811_OP_PAGE4) | |
2062 | ||
2063 | /* Assemble the post index byte for 68HC12 extended addressing modes. */ | |
6927f982 | 2064 | |
60bcf0fa | 2065 | static int |
ca43c854 | 2066 | build_indexed_byte (operand *op, int format ATTRIBUTE_UNUSED, int move_insn) |
60bcf0fa NC |
2067 | { |
2068 | unsigned char byte = 0; | |
2069 | char *f; | |
2070 | int mode; | |
2071 | long val; | |
2072 | ||
2073 | val = op->exp.X_add_number; | |
2074 | mode = op->mode; | |
2075 | if (mode & M6812_AUTO_INC_DEC) | |
2076 | { | |
2077 | byte = 0x20; | |
2078 | if (mode & (M6812_POST_INC | M6812_POST_DEC)) | |
2079 | byte |= 0x10; | |
2080 | ||
2081 | if (op->exp.X_op == O_constant) | |
2082 | { | |
2083 | if (!check_range (val, mode)) | |
6927f982 NC |
2084 | as_bad (_("Increment/decrement value is out of range: `%ld'."), |
2085 | val); | |
2086 | ||
60bcf0fa NC |
2087 | if (mode & (M6812_POST_INC | M6812_PRE_INC)) |
2088 | byte |= (val - 1) & 0x07; | |
2089 | else | |
2090 | byte |= (8 - ((val) & 7)) | 0x8; | |
2091 | } | |
6927f982 | 2092 | |
60bcf0fa NC |
2093 | switch (op->reg1) |
2094 | { | |
2095 | case REG_NONE: | |
2096 | as_fatal (_("Expecting a register.")); | |
2097 | ||
2098 | case REG_X: | |
2099 | byte |= 0; | |
2100 | break; | |
2101 | ||
2102 | case REG_Y: | |
2103 | byte |= 0x40; | |
2104 | break; | |
2105 | ||
2106 | case REG_SP: | |
2107 | byte |= 0x80; | |
2108 | break; | |
2109 | ||
2110 | default: | |
2111 | as_bad (_("Invalid register for post/pre increment.")); | |
2112 | break; | |
2113 | } | |
2114 | ||
2115 | f = frag_more (1); | |
2116 | number_to_chars_bigendian (f, byte, 1); | |
2117 | return 1; | |
2118 | } | |
2119 | ||
7bfda7eb | 2120 | if (mode & (M6812_OP_IDX | M6812_OP_D_IDX_2)) |
60bcf0fa NC |
2121 | { |
2122 | switch (op->reg1) | |
2123 | { | |
2124 | case REG_X: | |
2125 | byte = 0; | |
2126 | break; | |
2127 | ||
2128 | case REG_Y: | |
2129 | byte = 1; | |
2130 | break; | |
2131 | ||
2132 | case REG_SP: | |
2133 | byte = 2; | |
2134 | break; | |
2135 | ||
2136 | case REG_PC: | |
2137 | byte = 3; | |
2138 | break; | |
2139 | ||
2140 | default: | |
2141 | as_bad (_("Invalid register.")); | |
2142 | break; | |
2143 | } | |
6927f982 | 2144 | |
60bcf0fa NC |
2145 | if (op->exp.X_op == O_constant) |
2146 | { | |
2147 | if (!check_range (val, M6812_OP_IDX)) | |
6927f982 | 2148 | as_bad (_("Offset out of 16-bit range: %ld."), val); |
60bcf0fa | 2149 | |
6927f982 NC |
2150 | if (move_insn && !(val >= -16 && val <= 15) |
2151 | && ((!(mode & M6812_OP_IDX) && !(mode & M6812_OP_D_IDX_2)) | |
2152 | || !(current_architecture & cpu9s12x))) | |
60bcf0fa | 2153 | { |
ae3e85dd | 2154 | as_bad (_("Offset out of 5-bit range for movw/movb insn: %ld."), |
098f2ec3 | 2155 | val); |
60bcf0fa NC |
2156 | return -1; |
2157 | } | |
2158 | ||
7bfda7eb | 2159 | if (val >= -16 && val <= 15 && !(mode & M6812_OP_D_IDX_2)) |
60bcf0fa NC |
2160 | { |
2161 | byte = byte << 6; | |
2162 | byte |= val & 0x1f; | |
2163 | f = frag_more (1); | |
2164 | number_to_chars_bigendian (f, byte, 1); | |
2165 | return 1; | |
2166 | } | |
7bfda7eb | 2167 | else if (val >= -256 && val <= 255 && !(mode & M6812_OP_D_IDX_2)) |
60bcf0fa NC |
2168 | { |
2169 | byte = byte << 3; | |
2170 | byte |= 0xe0; | |
2171 | if (val < 0) | |
2172 | byte |= 0x1; | |
2173 | f = frag_more (2); | |
2174 | number_to_chars_bigendian (f, byte, 1); | |
2175 | number_to_chars_bigendian (f + 1, val & 0x0FF, 1); | |
2176 | return 2; | |
2177 | } | |
2178 | else | |
2179 | { | |
2180 | byte = byte << 3; | |
7bfda7eb | 2181 | if (mode & M6812_OP_D_IDX_2) |
60bcf0fa NC |
2182 | byte |= 0xe3; |
2183 | else | |
2184 | byte |= 0xe2; | |
2185 | ||
2186 | f = frag_more (3); | |
2187 | number_to_chars_bigendian (f, byte, 1); | |
2188 | number_to_chars_bigendian (f + 1, val & 0x0FFFF, 2); | |
2189 | return 3; | |
2190 | } | |
2191 | } | |
6927f982 | 2192 | |
7bfda7eb SC |
2193 | if (mode & M6812_OP_D_IDX_2) |
2194 | { | |
2195 | byte = (byte << 3) | 0xe3; | |
2196 | f = frag_more (1); | |
2197 | number_to_chars_bigendian (f, byte, 1); | |
2198 | ||
2199 | fixup16 (&op->exp, 0, 0); | |
2200 | } | |
2201 | else if (op->reg1 != REG_PC) | |
098f2ec3 | 2202 | { |
c9e03e8b SC |
2203 | symbolS *sym; |
2204 | offsetT off; | |
2205 | ||
098f2ec3 KH |
2206 | f = frag_more (1); |
2207 | number_to_chars_bigendian (f, byte, 1); | |
c9e03e8b SC |
2208 | sym = op->exp.X_add_symbol; |
2209 | off = op->exp.X_add_number; | |
2210 | if (op->exp.X_op != O_symbol) | |
2211 | { | |
2212 | sym = make_expr_symbol (&op->exp); | |
2213 | off = 0; | |
2214 | } | |
6927f982 | 2215 | |
28d39d1a NC |
2216 | /* movb/movw cannot be relaxed. */ |
2217 | if (move_insn) | |
2218 | { | |
6927f982 NC |
2219 | if ((mode & M6812_OP_IDX) && (current_architecture & cpu9s12x)) |
2220 | { | |
2221 | /* Must treat as a 16bit relocate as size of final result is unknown. */ | |
2222 | ||
2223 | byte <<= 3; | |
2224 | byte |= 0b11100010; | |
2225 | number_to_chars_bigendian (f, byte, 1); | |
2226 | fix_new (frag_now, f - frag_now->fr_literal, 2, | |
2227 | sym, off, 0, BFD_RELOC_M68HC12_16B); | |
2228 | f = frag_more (2); | |
2229 | return 1; | |
2230 | } | |
2231 | else | |
2232 | { | |
2233 | /* Non-S12X will fail at relocate stage if offset out of range. */ | |
2234 | byte <<= 6; | |
2235 | number_to_chars_bigendian (f, byte, 1); | |
2236 | fix_new (frag_now, f - frag_now->fr_literal, 1, | |
2237 | sym, off, 0, BFD_RELOC_M68HC12_5B); | |
2238 | return 1; | |
2239 | } | |
28d39d1a NC |
2240 | } |
2241 | else | |
2242 | { | |
2243 | number_to_chars_bigendian (f, byte, 1); | |
2244 | frag_var (rs_machine_dependent, 2, 2, | |
2245 | ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_UNDF), | |
2246 | sym, off, f); | |
2247 | } | |
098f2ec3 | 2248 | } |
88051039 | 2249 | else |
098f2ec3 KH |
2250 | { |
2251 | f = frag_more (1); | |
6927f982 | 2252 | |
28d39d1a NC |
2253 | /* movb/movw cannot be relaxed. */ |
2254 | if (move_insn) | |
2255 | { | |
2256 | byte <<= 6; | |
2257 | number_to_chars_bigendian (f, byte, 1); | |
2258 | fix_new (frag_now, f - frag_now->fr_literal, 1, | |
2259 | op->exp.X_add_symbol, op->exp.X_add_number, 0, BFD_RELOC_M68HC12_5B); | |
2260 | return 1; | |
2261 | } | |
2262 | else | |
2263 | { | |
2264 | number_to_chars_bigendian (f, byte, 1); | |
2265 | frag_var (rs_machine_dependent, 2, 2, | |
2266 | ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_UNDF), | |
2267 | op->exp.X_add_symbol, | |
2268 | op->exp.X_add_number, f); | |
2269 | } | |
098f2ec3 | 2270 | } |
60bcf0fa NC |
2271 | return 3; |
2272 | } | |
2273 | ||
7bfda7eb | 2274 | if (mode & (M6812_OP_REG | M6812_OP_D_IDX)) |
60bcf0fa | 2275 | { |
7bfda7eb | 2276 | if (mode & M6812_OP_D_IDX) |
60bcf0fa NC |
2277 | { |
2278 | if (op->reg1 != REG_D) | |
2279 | as_bad (_("Expecting register D for indexed indirect mode.")); | |
6927f982 | 2280 | if ((move_insn) && (!(current_architecture & cpu9s12x))) |
60bcf0fa NC |
2281 | as_bad (_("Indexed indirect mode is not allowed for movb/movw.")); |
2282 | ||
2283 | byte = 0xE7; | |
2284 | } | |
2285 | else | |
2286 | { | |
2287 | switch (op->reg1) | |
2288 | { | |
2289 | case REG_A: | |
2290 | byte = 0xE4; | |
2291 | break; | |
2292 | ||
2293 | case REG_B: | |
2294 | byte = 0xE5; | |
2295 | break; | |
2296 | ||
2297 | default: | |
2298 | as_bad (_("Invalid accumulator register.")); | |
2299 | ||
2300 | case REG_D: | |
2301 | byte = 0xE6; | |
2302 | break; | |
2303 | } | |
2304 | } | |
2305 | switch (op->reg2) | |
2306 | { | |
2307 | case REG_X: | |
2308 | break; | |
2309 | ||
2310 | case REG_Y: | |
2311 | byte |= (1 << 3); | |
2312 | break; | |
2313 | ||
2314 | case REG_SP: | |
2315 | byte |= (2 << 3); | |
2316 | break; | |
2317 | ||
2318 | case REG_PC: | |
2319 | byte |= (3 << 3); | |
2320 | break; | |
2321 | ||
2322 | default: | |
2323 | as_bad (_("Invalid indexed register.")); | |
2324 | break; | |
2325 | } | |
2326 | f = frag_more (1); | |
2327 | number_to_chars_bigendian (f, byte, 1); | |
2328 | return 1; | |
2329 | } | |
2330 | ||
6927f982 NC |
2331 | fprintf (stderr, "mode = 0x%x\nop->reg1 = 0x%x\nop->reg2 = 0x%x\n", |
2332 | mode, op->reg1, op->reg2); | |
60bcf0fa NC |
2333 | as_fatal (_("Addressing mode not implemented yet.")); |
2334 | return 0; | |
2335 | } | |
2336 | ||
2337 | /* Assemble the 68HC12 register mode byte. */ | |
2338 | static int | |
ca43c854 | 2339 | build_reg_mode (operand *op, int format) |
60bcf0fa NC |
2340 | { |
2341 | unsigned char byte; | |
2342 | char *f; | |
2343 | ||
6927f982 NC |
2344 | if ((format & M6812_OP_SEX_MARKER) |
2345 | && (op->reg1 != REG_A) && (op->reg1 != REG_B) && (op->reg1 != REG_CCR) | |
2346 | && (!(current_architecture & cpu9s12x))) | |
60bcf0fa NC |
2347 | as_bad (_("Invalid source register for this instruction, use 'tfr'.")); |
2348 | else if (op->reg1 == REG_NONE || op->reg1 == REG_PC) | |
2349 | as_bad (_("Invalid source register.")); | |
2350 | ||
2351 | if (format & M6812_OP_SEX_MARKER | |
2352 | && op->reg2 != REG_D | |
2353 | && op->reg2 != REG_X && op->reg2 != REG_Y && op->reg2 != REG_SP) | |
2354 | as_bad (_("Invalid destination register for this instruction, use 'tfr'.")); | |
2355 | else if (op->reg2 == REG_NONE || op->reg2 == REG_PC) | |
2356 | as_bad (_("Invalid destination register.")); | |
2357 | ||
2358 | byte = (op->reg1 << 4) | (op->reg2); | |
2359 | if (format & M6812_OP_EXG_MARKER) | |
2360 | byte |= 0x80; | |
2361 | ||
6927f982 NC |
2362 | if ((format & M6812_OP_SEX_MARKER) |
2363 | && (op->reg1 == REG_D) && (current_architecture & cpu9s12x)) | |
2364 | byte |= 0x08; | |
2365 | ||
60bcf0fa NC |
2366 | f = frag_more (1); |
2367 | number_to_chars_bigendian (f, byte, 1); | |
2368 | return 1; | |
2369 | } | |
2370 | ||
6927f982 NC |
2371 | /* build_insn_xg takes a pointer to the opcode entry in the opcode table, |
2372 | the array of operand expressions and builds the corresponding instruction. */ | |
2373 | ||
2374 | static void | |
2375 | build_insn_xg (struct m68hc11_opcode *opcode, | |
2376 | operand operands[], | |
2377 | int nb_operands ATTRIBUTE_UNUSED) | |
2378 | { | |
2379 | char *f; | |
2380 | long format; | |
2381 | ||
2382 | /* Put the page code instruction if there is one. */ | |
2383 | format = opcode->format; | |
2384 | ||
2385 | if (!(operands[0].mode & (M6811_OP_LOW_ADDR | M6811_OP_HIGH_ADDR))) | |
2386 | /* Need to retain those two modes, but clear for others. */ | |
2387 | operands[0].mode = 0; | |
2388 | ||
2389 | if (format & M68XG_OP_R_IMM8) | |
2390 | { | |
2391 | /* These opcodes are byte followed by imm8. */ | |
2392 | f = m68hc11_new_insn (1); | |
2393 | number_to_chars_bigendian (f, opcode->opcode >> 8, 1); | |
2394 | fixup8_xg (&operands[0].exp, format, operands[0].mode); | |
2395 | } | |
2396 | else if (format & M68XG_OP_R_IMM16) | |
2397 | { | |
2398 | fixS *fixp; | |
2399 | /* These opcodes expand into two imm8 instructions. | |
2400 | Emit as low:high as per the Freescale datasheet. | |
2401 | The linker requires them to be adjacent to handle the upper byte. */ | |
2402 | ||
2403 | /* Build low byte. */ | |
2404 | f = m68hc11_new_insn (1); | |
2405 | number_to_chars_bigendian (f, opcode->opcode >> 8, 1); | |
2406 | operands[0].mode = M6811_OP_LOW_ADDR; | |
2407 | f = frag_more (1); | |
2408 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
2409 | &operands[0].exp, FALSE, BFD_RELOC_M68HC12_LO8XG); | |
2410 | fixp->fx_no_overflow = 1; | |
2411 | number_to_chars_bigendian (f, 0, 1); | |
2412 | ||
2413 | /* Build high byte. */ | |
2414 | f = m68hc11_new_insn (1); | |
2415 | number_to_chars_bigendian (f, (opcode->opcode >> 8) | 0x08, 1); | |
2416 | operands[0].mode = M6811_OP_HIGH_ADDR; | |
2417 | f = frag_more (1); | |
2418 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
2419 | &operands[0].exp, FALSE, BFD_RELOC_M68HC12_HI8XG); | |
2420 | fixp->fx_no_overflow = 1; | |
2421 | number_to_chars_bigendian (f, 0, 1); | |
2422 | ||
2423 | } | |
2424 | else if (format & M68XG_OP_REL9) | |
2425 | { | |
2426 | f = m68hc11_new_insn (1); | |
2427 | number_to_chars_bigendian (f, opcode->opcode >> 8, 1); /* High byte. */ | |
2428 | fixup8_xg (&operands[0].exp, format, M68XG_OP_REL9); | |
2429 | } | |
2430 | else if (format & M68XG_OP_REL10) | |
2431 | { | |
2432 | f = m68hc11_new_insn (1); | |
2433 | number_to_chars_bigendian (f, opcode->opcode >> 8, 1); /* High byte. */ | |
2434 | fixup8_xg (&operands[0].exp, format, M68XG_OP_REL10); | |
2435 | } | |
2436 | else | |
2437 | { | |
2438 | f = m68hc11_new_insn (2); | |
2439 | number_to_chars_bigendian (f, opcode->opcode, 2); | |
2440 | } | |
2441 | return; | |
2442 | } | |
2443 | ||
60bcf0fa | 2444 | /* build_insn takes a pointer to the opcode entry in the opcode table, |
67c1ffbe | 2445 | the array of operand expressions and builds the corresponding instruction. |
60bcf0fa NC |
2446 | This operation only deals with non relative jumps insn (need special |
2447 | handling). */ | |
6927f982 | 2448 | |
60bcf0fa | 2449 | static void |
6927f982 NC |
2450 | build_insn (struct m68hc11_opcode *opcode, |
2451 | operand operands[], | |
ca43c854 | 2452 | int nb_operands ATTRIBUTE_UNUSED) |
60bcf0fa NC |
2453 | { |
2454 | int i; | |
2455 | char *f; | |
60bcf0fa NC |
2456 | long format; |
2457 | int move_insn = 0; | |
2458 | ||
2459 | /* Put the page code instruction if there is one. */ | |
2460 | format = opcode->format; | |
e371935f | 2461 | |
e371935f | 2462 | if (format & M6811_OP_BRANCH) |
fd99afa7 | 2463 | fix_new (frag_now, frag_now_fix (), 0, |
e371935f SC |
2464 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); |
2465 | ||
60bcf0fa NC |
2466 | if (format & OP_EXTENDED) |
2467 | { | |
2468 | int page_code; | |
2469 | ||
2470 | f = m68hc11_new_insn (2); | |
2471 | if (format & M6811_OP_PAGE2) | |
2472 | page_code = M6811_OPCODE_PAGE2; | |
2473 | else if (format & M6811_OP_PAGE3) | |
2474 | page_code = M6811_OPCODE_PAGE3; | |
2475 | else | |
2476 | page_code = M6811_OPCODE_PAGE4; | |
2477 | ||
2478 | number_to_chars_bigendian (f, page_code, 1); | |
2479 | f++; | |
60bcf0fa NC |
2480 | } |
2481 | else | |
2482 | f = m68hc11_new_insn (1); | |
2483 | ||
2484 | number_to_chars_bigendian (f, opcode->opcode, 1); | |
2485 | ||
2486 | i = 0; | |
2487 | ||
2488 | /* The 68HC12 movb and movw instructions are special. We have to handle | |
2489 | them in a special way. */ | |
2490 | if (format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2)) | |
2491 | { | |
2492 | move_insn = 1; | |
2493 | if (format & M6812_OP_IDX) | |
2494 | { | |
986c6f4b | 2495 | build_indexed_byte (&operands[0], format, 1); |
60bcf0fa NC |
2496 | i = 1; |
2497 | format &= ~M6812_OP_IDX; | |
2498 | } | |
2499 | if (format & M6812_OP_IDX_P2) | |
2500 | { | |
986c6f4b | 2501 | build_indexed_byte (&operands[1], format, 1); |
60bcf0fa NC |
2502 | i = 0; |
2503 | format &= ~M6812_OP_IDX_P2; | |
2504 | } | |
2505 | } | |
2506 | ||
2507 | if (format & (M6811_OP_DIRECT | M6811_OP_IMM8)) | |
2508 | { | |
60bcf0fa NC |
2509 | fixup8 (&operands[i].exp, |
2510 | format & (M6811_OP_DIRECT | M6811_OP_IMM8 | M6812_OP_TRAP_ID), | |
2511 | operands[i].mode); | |
2512 | i++; | |
2513 | } | |
7bfda7eb SC |
2514 | else if (IS_CALL_SYMBOL (format) && nb_operands == 1) |
2515 | { | |
2516 | format &= ~M6812_OP_PAGE; | |
2517 | fixup24 (&operands[i].exp, format & M6811_OP_IND16, | |
2518 | operands[i].mode); | |
2519 | i++; | |
2520 | } | |
60bcf0fa NC |
2521 | else if (format & (M6811_OP_IMM16 | M6811_OP_IND16)) |
2522 | { | |
7bfda7eb SC |
2523 | fixup16 (&operands[i].exp, |
2524 | format & (M6811_OP_IMM16 | M6811_OP_IND16 | M6812_OP_PAGE), | |
60bcf0fa NC |
2525 | operands[i].mode); |
2526 | i++; | |
2527 | } | |
2528 | else if (format & (M6811_OP_IX | M6811_OP_IY)) | |
2529 | { | |
2530 | if ((format & M6811_OP_IX) && (operands[0].reg1 != REG_X)) | |
2531 | as_bad (_("Invalid indexed register, expecting register X.")); | |
2532 | if ((format & M6811_OP_IY) && (operands[0].reg1 != REG_Y)) | |
2533 | as_bad (_("Invalid indexed register, expecting register Y.")); | |
2534 | ||
60bcf0fa NC |
2535 | fixup8 (&operands[0].exp, M6811_OP_IX, operands[0].mode); |
2536 | i = 1; | |
2537 | } | |
2538 | else if (format & | |
7bfda7eb SC |
2539 | (M6812_OP_IDX | M6812_OP_IDX_2 | M6812_OP_IDX_1 |
2540 | | M6812_OP_D_IDX | M6812_OP_D_IDX_2)) | |
60bcf0fa | 2541 | { |
986c6f4b | 2542 | build_indexed_byte (&operands[i], format, move_insn); |
60bcf0fa NC |
2543 | i++; |
2544 | } | |
2545 | else if (format & M6812_OP_REG && current_architecture & cpu6812) | |
2546 | { | |
986c6f4b | 2547 | build_reg_mode (&operands[i], format); |
60bcf0fa NC |
2548 | i++; |
2549 | } | |
2550 | if (format & M6811_OP_BITMASK) | |
2551 | { | |
60bcf0fa NC |
2552 | fixup8 (&operands[i].exp, M6811_OP_BITMASK, operands[i].mode); |
2553 | i++; | |
2554 | } | |
2555 | if (format & M6811_OP_JUMP_REL) | |
2556 | { | |
60bcf0fa | 2557 | fixup8 (&operands[i].exp, M6811_OP_JUMP_REL, operands[i].mode); |
60bcf0fa NC |
2558 | } |
2559 | else if (format & M6812_OP_IND16_P2) | |
2560 | { | |
60bcf0fa NC |
2561 | fixup16 (&operands[1].exp, M6811_OP_IND16, operands[1].mode); |
2562 | } | |
7bfda7eb SC |
2563 | if (format & M6812_OP_PAGE) |
2564 | { | |
2565 | fixup8 (&operands[i].exp, M6812_OP_PAGE, operands[i].mode); | |
2566 | } | |
60bcf0fa | 2567 | } |
60bcf0fa NC |
2568 | \f |
2569 | /* Opcode identification and operand analysis. */ | |
2570 | ||
2571 | /* find() gets a pointer to an entry in the opcode table. It must look at all | |
2572 | opcodes with the same name and use the operands to choose the correct | |
2573 | opcode. Returns the opcode pointer if there was a match and 0 if none. */ | |
2574 | static struct m68hc11_opcode * | |
ca43c854 | 2575 | find (struct m68hc11_opcode_def *opc, operand operands[], int nb_operands) |
60bcf0fa NC |
2576 | { |
2577 | int i, match, pos; | |
2578 | struct m68hc11_opcode *opcode; | |
2579 | struct m68hc11_opcode *op_indirect; | |
2580 | ||
2581 | op_indirect = 0; | |
2582 | opcode = opc->opcode; | |
2583 | ||
6927f982 NC |
2584 | /* Now search the opcode table table for one with operands |
2585 | that matches what we've got. */ | |
2586 | ||
2587 | if (current_architecture & cpuxgate) | |
2588 | { | |
2589 | /* Many XGATE insns are simple enough that we get an exact match. */ | |
2590 | for (pos = match = 0; match == 0 && pos < opc->nb_modes; pos++, opcode++) | |
2591 | if (opcode->format == operands[nb_operands-1].mode) | |
2592 | return opcode; | |
2593 | ||
2594 | return 0; | |
2595 | } | |
2596 | ||
2597 | /* Non XGATE */ | |
2598 | ||
60bcf0fa NC |
2599 | /* Now search the opcode table table for one with operands |
2600 | that matches what we've got. We're only done if the operands matched so | |
2601 | far AND there are no more to check. */ | |
2602 | for (pos = match = 0; match == 0 && pos < opc->nb_modes; pos++, opcode++) | |
2603 | { | |
2604 | int poss_indirect = 0; | |
2605 | long format = opcode->format; | |
2606 | int expect; | |
2607 | ||
2608 | expect = 0; | |
2609 | if (opcode->format & M6811_OP_MASK) | |
2610 | expect++; | |
2611 | if (opcode->format & M6811_OP_BITMASK) | |
2612 | expect++; | |
2613 | if (opcode->format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2614 | expect++; | |
2615 | if (opcode->format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2)) | |
2616 | expect++; | |
7bfda7eb SC |
2617 | if ((opcode->format & M6812_OP_PAGE) |
2618 | && (!IS_CALL_SYMBOL (opcode->format) || nb_operands == 2)) | |
2619 | expect++; | |
60bcf0fa NC |
2620 | |
2621 | for (i = 0; expect == nb_operands && i < nb_operands; i++) | |
2622 | { | |
2623 | int mode = operands[i].mode; | |
2624 | ||
2625 | if (mode & M6811_OP_IMM16) | |
2626 | { | |
2627 | if (format & | |
2628 | (M6811_OP_IMM8 | M6811_OP_IMM16 | M6811_OP_BITMASK)) | |
2629 | continue; | |
2630 | break; | |
2631 | } | |
2632 | if (mode == M6811_OP_DIRECT) | |
2633 | { | |
2634 | if (format & M6811_OP_DIRECT) | |
2635 | continue; | |
2636 | ||
2637 | /* If the operand is a page 0 operand, remember a | |
2638 | possible <abs-16> addressing mode. We mark | |
2639 | this and continue to check other operands. */ | |
2640 | if (format & M6811_OP_IND16 | |
2641 | && flag_strict_direct_addressing && op_indirect == 0) | |
2642 | { | |
2643 | poss_indirect = 1; | |
2644 | continue; | |
2645 | } | |
2646 | break; | |
2647 | } | |
2648 | if (mode & M6811_OP_IND16) | |
2649 | { | |
2650 | if (i == 0 && (format & M6811_OP_IND16) != 0) | |
2651 | continue; | |
7bfda7eb SC |
2652 | if (i != 0 && (format & M6812_OP_PAGE) != 0) |
2653 | continue; | |
60bcf0fa NC |
2654 | if (i != 0 && (format & M6812_OP_IND16_P2) != 0) |
2655 | continue; | |
2656 | if (i == 0 && (format & M6811_OP_BITMASK)) | |
2657 | break; | |
2658 | } | |
2659 | if (mode & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2660 | { | |
2661 | if (format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2662 | continue; | |
2663 | } | |
2664 | if (mode & M6812_OP_REG) | |
2665 | { | |
df86943d NC |
2666 | if (i == 0 |
2667 | && (format & M6812_OP_REG) | |
2668 | && (operands[i].reg2 == REG_NONE)) | |
60bcf0fa | 2669 | continue; |
df86943d NC |
2670 | if (i == 0 |
2671 | && (format & M6812_OP_REG) | |
2672 | && (format & M6812_OP_REG_2) | |
2673 | && (operands[i].reg2 != REG_NONE)) | |
60bcf0fa | 2674 | continue; |
df86943d NC |
2675 | if (i == 0 |
2676 | && (format & M6812_OP_IDX) | |
2677 | && (operands[i].reg2 != REG_NONE)) | |
2678 | continue; | |
df86943d NC |
2679 | if (i == 0 |
2680 | && (format & M6812_OP_IDX) | |
60bcf0fa NC |
2681 | && (format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2))) |
2682 | continue; | |
df86943d NC |
2683 | if (i == 1 |
2684 | && (format & M6812_OP_IDX_P2)) | |
60bcf0fa NC |
2685 | continue; |
2686 | break; | |
2687 | } | |
2688 | if (mode & M6812_OP_IDX) | |
2689 | { | |
2690 | if (format & M6811_OP_IX && operands[i].reg1 == REG_X) | |
2691 | continue; | |
2692 | if (format & M6811_OP_IY && operands[i].reg1 == REG_Y) | |
2693 | continue; | |
2694 | if (i == 0 | |
2695 | && format & (M6812_OP_IDX | M6812_OP_IDX_1 | M6812_OP_IDX_2) | |
2696 | && (operands[i].reg1 == REG_X | |
2697 | || operands[i].reg1 == REG_Y | |
2698 | || operands[i].reg1 == REG_SP | |
2699 | || operands[i].reg1 == REG_PC)) | |
2700 | continue; | |
6927f982 | 2701 | if (i == 1 && (format & M6812_OP_IDX_P2)) |
60bcf0fa NC |
2702 | continue; |
2703 | } | |
7bfda7eb SC |
2704 | if (mode & format & (M6812_OP_D_IDX | M6812_OP_D_IDX_2)) |
2705 | { | |
2706 | if (i == 0) | |
2707 | continue; | |
2708 | } | |
60bcf0fa NC |
2709 | if (mode & M6812_AUTO_INC_DEC) |
2710 | { | |
2711 | if (i == 0 | |
2712 | && format & (M6812_OP_IDX | M6812_OP_IDX_1 | | |
2713 | M6812_OP_IDX_2)) | |
2714 | continue; | |
2715 | if (i == 1 && format & M6812_OP_IDX_P2) | |
2716 | continue; | |
2717 | } | |
2718 | break; | |
2719 | } | |
2720 | match = i == nb_operands; | |
2721 | ||
2722 | /* Operands are ok but an operand uses page 0 addressing mode | |
2723 | while the insn supports abs-16 mode. Keep a reference to this | |
2724 | insns in case there is no insn supporting page 0 addressing. */ | |
2725 | if (match && poss_indirect) | |
2726 | { | |
2727 | op_indirect = opcode; | |
2728 | match = 0; | |
2729 | } | |
2730 | if (match) | |
2731 | break; | |
2732 | } | |
2733 | ||
2734 | /* Page 0 addressing is used but not supported by any insn. | |
2735 | If absolute addresses are supported, we use that insn. */ | |
2736 | if (match == 0 && op_indirect) | |
2737 | { | |
2738 | opcode = op_indirect; | |
2739 | match = 1; | |
2740 | } | |
2741 | ||
6927f982 | 2742 | return match ? opcode : 0; |
60bcf0fa NC |
2743 | } |
2744 | ||
60bcf0fa NC |
2745 | /* Find the real opcode and its associated operands. We use a progressive |
2746 | approach here. On entry, 'opc' points to the first opcode in the | |
2747 | table that matches the opcode name in the source line. We try to | |
2748 | isolate an operand, find a possible match in the opcode table. | |
2749 | We isolate another operand if no match were found. The table 'operands' | |
2750 | is filled while operands are recognized. | |
2751 | ||
2752 | Returns the opcode pointer that matches the opcode name in the | |
2753 | source line and the associated operands. */ | |
2754 | static struct m68hc11_opcode * | |
ca43c854 SC |
2755 | find_opcode (struct m68hc11_opcode_def *opc, operand operands[], |
2756 | int *nb_operands) | |
60bcf0fa NC |
2757 | { |
2758 | struct m68hc11_opcode *opcode; | |
2759 | int i; | |
2760 | ||
2761 | if (opc->max_operands == 0) | |
2762 | { | |
2763 | *nb_operands = 0; | |
2764 | return opc->opcode; | |
2765 | } | |
2766 | ||
2767 | for (i = 0; i < opc->max_operands;) | |
2768 | { | |
2769 | int result; | |
2770 | ||
2771 | result = get_operand (&operands[i], i, opc->format); | |
2772 | if (result <= 0) | |
fafb6d17 | 2773 | return 0; |
60bcf0fa NC |
2774 | |
2775 | /* Special case where the bitmask of the bclr/brclr | |
2776 | instructions is not introduced by #. | |
2777 | Example: bclr 3,x $80. */ | |
2778 | if (i == 1 && (opc->format & M6811_OP_BITMASK) | |
2779 | && (operands[i].mode & M6811_OP_IND16)) | |
2780 | { | |
2781 | operands[i].mode = M6811_OP_IMM16; | |
2782 | } | |
2783 | ||
2784 | i += result; | |
2785 | *nb_operands = i; | |
2786 | if (i >= opc->min_operands) | |
2787 | { | |
2788 | opcode = find (opc, operands, i); | |
577300ce SC |
2789 | |
2790 | /* Another special case for 'call foo,page' instructions. | |
2791 | Since we support 'call foo' and 'call foo,page' we must look | |
2792 | if the optional page specification is present otherwise we will | |
2793 | assemble immediately and treat the page spec as garbage. */ | |
7bfda7eb SC |
2794 | if (opcode && !(opcode->format & M6812_OP_PAGE)) |
2795 | return opcode; | |
2796 | ||
2797 | if (opcode && *input_line_pointer != ',') | |
fafb6d17 | 2798 | return opcode; |
60bcf0fa NC |
2799 | } |
2800 | ||
2801 | if (*input_line_pointer == ',') | |
2802 | input_line_pointer++; | |
2803 | } | |
82efde3a | 2804 | |
60bcf0fa NC |
2805 | return 0; |
2806 | } | |
2807 | ||
2808 | #define M6812_XBCC_MARKER (M6812_OP_TBCC_MARKER \ | |
2809 | | M6812_OP_DBCC_MARKER \ | |
2810 | | M6812_OP_IBCC_MARKER) | |
60bcf0fa NC |
2811 | \f |
2812 | /* Gas line assembler entry point. */ | |
2813 | ||
2814 | /* This is the main entry point for the machine-dependent assembler. str | |
2815 | points to a machine-dependent instruction. This function is supposed to | |
2816 | emit the frags/bytes it assembles to. */ | |
2817 | void | |
ca43c854 | 2818 | md_assemble (char *str) |
60bcf0fa NC |
2819 | { |
2820 | struct m68hc11_opcode_def *opc; | |
2821 | struct m68hc11_opcode *opcode; | |
2822 | ||
6927f982 | 2823 | struct m68hc11_opcode opcode_local; |
2132e3a3 AM |
2824 | unsigned char *op_start, *op_end; |
2825 | char *save; | |
60bcf0fa NC |
2826 | char name[20]; |
2827 | int nlen = 0; | |
2828 | operand operands[M6811_MAX_OPERANDS]; | |
878bcc43 | 2829 | int nb_operands = 0; |
60bcf0fa NC |
2830 | int branch_optimize = 0; |
2831 | int alias_id = -1; | |
2832 | ||
fafb6d17 | 2833 | /* Drop leading whitespace. */ |
60bcf0fa NC |
2834 | while (*str == ' ') |
2835 | str++; | |
2836 | ||
2837 | /* Find the opcode end and get the opcode in 'name'. The opcode is forced | |
2838 | lower case (the opcode table only has lower case op-codes). */ | |
2132e3a3 | 2839 | for (op_start = op_end = (unsigned char *) str; |
4ad7ac30 | 2840 | *op_end && !is_end_of_line[*op_end] && *op_end != ' '; |
60bcf0fa NC |
2841 | op_end++) |
2842 | { | |
3882b010 | 2843 | name[nlen] = TOLOWER (op_start[nlen]); |
60bcf0fa | 2844 | nlen++; |
4ad7ac30 AM |
2845 | if (nlen == sizeof (name) - 1) |
2846 | break; | |
60bcf0fa NC |
2847 | } |
2848 | name[nlen] = 0; | |
2849 | ||
2850 | if (nlen == 0) | |
2851 | { | |
2852 | as_bad (_("No instruction or missing opcode.")); | |
2853 | return; | |
2854 | } | |
2855 | ||
6927f982 NC |
2856 | if (current_architecture == cpuxgate) |
2857 | { | |
2858 | /* Find the opcode definition given its name. */ | |
2859 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, name); | |
2860 | if (opc == NULL) | |
2861 | { | |
2862 | as_bad (_("Opcode `%s' is not recognized."), name); | |
2863 | return; | |
2864 | } | |
2865 | ||
2866 | /* Grab a local copy. */ | |
2867 | opcode_local.name = opc->opcode->name; | |
2868 | /* These will be incomplete where multiple variants exist. */ | |
2869 | opcode_local.opcode = opc->opcode->opcode; | |
2870 | opcode_local.format = opc->opcode->format; | |
2871 | ||
2872 | save = input_line_pointer; | |
2873 | input_line_pointer = (char *) op_end; | |
2874 | ||
2875 | if (opc->format == M68XG_OP_NONE) | |
2876 | { | |
2877 | /* No special handling required. */ | |
2878 | opcode_local.format = M68XG_OP_NONE; | |
2879 | build_insn_xg (opc->opcode, operands, 0); | |
2880 | return; | |
2881 | } | |
2882 | ||
2883 | /* Special handling of TFR. */ | |
2884 | if (strncmp (opc->opcode->name, "tfr",3) == 0) | |
2885 | { | |
2886 | /* There must be two operands with a comma. */ | |
2887 | input_line_pointer = skip_whites (input_line_pointer); | |
2888 | operands[0].reg1 = register_name (); | |
2889 | if (operands[0].reg1 == REG_NONE) | |
2890 | { | |
2891 | as_bad ("Invalid register\n"); | |
2892 | return; | |
2893 | } | |
2894 | input_line_pointer = skip_whites (input_line_pointer); | |
2895 | if (*input_line_pointer != ',') | |
2896 | { | |
2897 | as_bad ("Missing comma.\n"); | |
2898 | return; | |
2899 | } | |
2900 | input_line_pointer++; | |
2901 | input_line_pointer = skip_whites (input_line_pointer); | |
2902 | operands[1].reg1 = register_name (); | |
2903 | if (operands[1].reg1 == REG_NONE) | |
2904 | { | |
2905 | as_bad ("Invalid register\n"); | |
2906 | return; | |
2907 | } | |
2908 | input_line_pointer = skip_whites (input_line_pointer); | |
2909 | if (*input_line_pointer != '\n' && *input_line_pointer) | |
2910 | { | |
2911 | as_bad (_("Garbage at end of instruction: `%s'."), | |
2912 | input_line_pointer); | |
2913 | return; | |
2914 | } | |
2915 | if (operands[1].reg1 == REG_CCR) /* ,CCR */ | |
2916 | opc->opcode->opcode = 0x00f8 | ( operands[0].reg1 << 8); | |
2917 | else if (operands[0].reg1 == REG_CCR) /* CCR, */ | |
2918 | opc->opcode->opcode = 0x00f9 | ( operands[1].reg1 << 8); | |
2919 | else if (operands[1].reg1 == REG_PC) /* ,PC */ | |
2920 | opc->opcode->opcode = 0x00fa | ( operands[0].reg1 << 8); | |
2921 | else | |
2922 | { | |
2923 | as_bad ("Invalid operand to TFR\n"); | |
2924 | return; | |
2925 | } | |
2926 | /* no special handling required */ | |
2927 | opcode_local.format = M68XG_OP_NONE; | |
2928 | opcode_local.opcode = opc->opcode->opcode; | |
2929 | build_insn_xg (&opcode_local, operands, 0); | |
2930 | return; | |
2931 | } | |
2932 | ||
2933 | /* CSEM, SSEM */ | |
2934 | if (opc->format & M68XG_OP_IMM3) | |
2935 | { | |
2936 | /* Either IMM3 or R */ | |
2937 | input_line_pointer = skip_whites (input_line_pointer); | |
2938 | if ((*input_line_pointer == 'R') || (*input_line_pointer == 'r')) | |
2939 | { | |
2940 | operands[0].reg1 = register_name (); | |
2941 | if (operands[0].reg1 == REG_NONE) | |
2942 | { | |
2943 | as_bad ("Invalid register\n"); | |
2944 | return; | |
2945 | } | |
2946 | operands[0].mode = M68XG_OP_R; | |
2947 | /* One opcode has multiple modes, so find right one. */ | |
2948 | opcode = find (opc, operands, 1); | |
2949 | if (opcode) | |
2950 | { | |
2951 | opcode_local.opcode = opcode->opcode | |
2952 | | (operands[0].reg1 << 8); | |
2953 | opcode_local.format = M68XG_OP_NONE; | |
2954 | build_insn_xg (&opcode_local, operands, 1); | |
2955 | } | |
2956 | else | |
2957 | as_bad ("No opcode found\n"); | |
2958 | ||
2959 | return; | |
2960 | } | |
2961 | else | |
2962 | { | |
2963 | if (*input_line_pointer == '#') | |
2964 | input_line_pointer++; | |
2965 | ||
2966 | expression (&operands[0].exp); | |
2967 | if (operands[0].exp.X_op == O_illegal) | |
2968 | { | |
2969 | as_bad (_("Illegal operand.")); | |
2970 | return; | |
2971 | } | |
2972 | else if (operands[0].exp.X_op == O_absent) | |
2973 | { | |
2974 | as_bad (_("Missing operand.")); | |
2975 | return; | |
2976 | } | |
2977 | ||
2978 | if (check_range (operands[0].exp.X_add_number,M68XG_OP_IMM3)) | |
2979 | { | |
2980 | opcode_local.opcode |= (operands[0].exp.X_add_number); | |
2981 | operands[0].mode = M68XG_OP_IMM3; | |
2982 | ||
2983 | opcode = find (opc, operands, 1); | |
2984 | if (opcode) | |
2985 | { | |
2986 | opcode_local.opcode = opcode->opcode; | |
2987 | opcode_local.opcode | |
2988 | |= (operands[0].exp.X_add_number) << 8; | |
2989 | opcode_local.format = M68XG_OP_NONE; | |
2990 | build_insn_xg (&opcode_local, operands, 1); | |
2991 | } | |
2992 | else | |
2993 | as_bad ("No opcode found\n"); | |
2994 | ||
2995 | return; | |
2996 | } | |
2997 | else | |
2998 | { | |
2999 | as_bad ("Number out of range for IMM3\n"); | |
3000 | return; | |
3001 | } | |
3002 | } | |
3003 | } | |
3004 | ||
3005 | /* Special handling of SIF. */ | |
3006 | if (strncmp (opc->opcode->name, "sif",3) == 0) | |
3007 | { | |
3008 | /* Either OP_NONE or OP_RS. */ | |
3009 | if (*input_line_pointer != '\n') | |
3010 | input_line_pointer = skip_whites (input_line_pointer); | |
3011 | ||
3012 | if ((*input_line_pointer == '\n') || (*input_line_pointer == '\r') | |
3013 | || (*input_line_pointer == '\0')) | |
3014 | opc->opcode->opcode = 0x0300; | |
3015 | else | |
3016 | { | |
3017 | operands[0].reg1 = register_name (); | |
3018 | if (operands[0].reg1 == REG_NONE) | |
3019 | { | |
3020 | as_bad ("Invalid register\n"); | |
3021 | return; | |
3022 | } | |
3023 | opcode_local.opcode = 0x00f7 | (operands[0].reg1 << 8); | |
3024 | } | |
3025 | opcode_local.format = M68XG_OP_NONE; | |
3026 | build_insn_xg (&opcode_local, operands, 0); | |
3027 | return; | |
3028 | } | |
3029 | ||
3030 | /* SEX, PAR, JAL plus aliases NEG, TST, COM */ | |
3031 | if (opc->format & M68XG_OP_R) | |
3032 | { | |
3033 | input_line_pointer = skip_whites (input_line_pointer); | |
3034 | operands[0].reg1 = register_name (); | |
3035 | if (operands[0].reg1 == REG_NONE) | |
3036 | { | |
3037 | as_bad ("Invalid register\n"); | |
3038 | return; | |
3039 | } | |
3040 | if ((*input_line_pointer == '\n') || (*input_line_pointer == '\r') | |
3041 | || (*input_line_pointer == '\0')) | |
3042 | { | |
3043 | /* Likely to be OP R. */ | |
3044 | if (opc->format & M68XG_OP_R) | |
3045 | { | |
3046 | operands[0].mode = M68XG_OP_R; | |
3047 | ||
3048 | opcode = find (opc, operands, 1); | |
3049 | if (opcode) | |
3050 | { | |
3051 | if ((strncmp (opc->opcode->name, "com",3) == 0) | |
3052 | || (strncmp (opc->opcode->name, "neg",3) == 0)) | |
3053 | /* Special case for com RD as alias for sub RD,R0,RS */ | |
3054 | /* Special case for neg RD as alias for sub RD,R0,RS */ | |
3055 | opcode_local.opcode = opcode->opcode | |
3056 | | (operands[0].reg1 << 8) | (operands[0].reg1 << 2); | |
3057 | else if (strncmp (opc->opcode->name, "tst",3) == 0) | |
3058 | /* Special case for tst RS alias for sub R0, RS, R0 */ | |
3059 | opcode_local.opcode = opcode->opcode | |
3060 | | (operands[0].reg1 << 5); | |
3061 | else | |
3062 | opcode_local.opcode |= (operands[0].reg1 << 8); | |
3063 | } | |
3064 | opcode_local.format = M68XG_OP_NONE; | |
3065 | build_insn_xg (&opcode_local, operands, 0); | |
3066 | } | |
3067 | else | |
3068 | as_bad ("No valid mode found\n"); | |
3069 | ||
3070 | return; | |
3071 | } | |
3072 | } | |
3073 | ||
3074 | if (opc->format & (M68XG_OP_REL9 | M68XG_OP_REL10)) | |
3075 | { | |
3076 | opcode_local.format = opc->format; | |
3077 | input_line_pointer = skip_whites (input_line_pointer); | |
3078 | expression (&operands[0].exp); | |
3079 | if (operands[0].exp.X_op == O_illegal) | |
3080 | { | |
3081 | as_bad (_("Illegal operand.")); | |
3082 | return; | |
3083 | } | |
3084 | else if (operands[0].exp.X_op == O_absent) | |
3085 | { | |
3086 | as_bad (_("Missing operand.")); | |
3087 | return; | |
3088 | } | |
3089 | opcode_local.opcode = opc->opcode->opcode; | |
3090 | build_insn_xg (&opcode_local, operands, 1); | |
3091 | return; | |
3092 | } | |
3093 | ||
3094 | ||
3095 | /* For other command formats, parse input line and determine the mode | |
3096 | we are using as we go. */ | |
3097 | ||
3098 | input_line_pointer = skip_whites (input_line_pointer); | |
3099 | if ((*input_line_pointer == '\n') || (*input_line_pointer == '\r') | |
3100 | || (*input_line_pointer == '\0')) | |
3101 | return; /* nothing left */ | |
3102 | ||
3103 | if (*input_line_pointer == '#') | |
3104 | { | |
3105 | as_bad ("No register specified before hash\n"); | |
3106 | return; | |
3107 | } | |
3108 | ||
3109 | /* first operand is expected to be a register */ | |
3110 | if ((*input_line_pointer == 'R') || (*input_line_pointer == 'r')) | |
3111 | { | |
3112 | operands[0].reg1 = register_name (); | |
3113 | if (operands[0].reg1 == REG_NONE) | |
3114 | { | |
3115 | as_bad ("Invalid register\n"); | |
3116 | return; | |
3117 | } | |
3118 | } | |
3119 | ||
3120 | input_line_pointer = skip_whites (input_line_pointer); | |
3121 | if (*input_line_pointer != ',') | |
3122 | { | |
3123 | as_bad ("Missing operand\n"); | |
3124 | return; | |
3125 | } | |
3126 | input_line_pointer++; | |
3127 | input_line_pointer = skip_whites (input_line_pointer); | |
3128 | ||
3129 | if (*input_line_pointer == '#') | |
3130 | { | |
3131 | /* Some kind of immediate mode, check if this is possible. */ | |
3132 | if (!(opc->format | |
3133 | & (M68XG_OP_R_IMM8 | M68XG_OP_R_IMM16 | M68XG_OP_R_IMM4))) | |
3134 | as_bad ("Invalid immediate mode for `%s'", opc->opcode->name); | |
3135 | else | |
3136 | { | |
3137 | input_line_pointer++; | |
3138 | input_line_pointer = skip_whites (input_line_pointer); | |
3139 | if (strncmp (input_line_pointer, "%hi", 3) == 0) | |
3140 | { | |
3141 | input_line_pointer += 3; | |
3142 | operands[0].mode = M6811_OP_HIGH_ADDR; | |
3143 | } | |
3144 | else if (strncmp (input_line_pointer, "%lo", 3) == 0) | |
3145 | { | |
3146 | input_line_pointer += 3; | |
3147 | operands[0].mode = M6811_OP_LOW_ADDR; | |
3148 | } | |
3149 | else | |
3150 | operands[0].mode = 0; | |
3151 | ||
3152 | expression (&operands[0].exp); | |
3153 | if (operands[0].exp.X_op == O_illegal) | |
3154 | { | |
3155 | as_bad (_("Illegal operand.")); | |
3156 | return; | |
3157 | } | |
3158 | else if (operands[0].exp.X_op == O_absent) | |
3159 | { | |
3160 | as_bad (_("Missing operand.")); | |
3161 | return; | |
3162 | } | |
3163 | /* ok so far, can only be one mode */ | |
3164 | opcode_local.format = opc->format | |
3165 | & (M68XG_OP_R_IMM8 | M68XG_OP_R_IMM16 | M68XG_OP_R_IMM4); | |
3166 | if (opcode_local.format & M68XG_OP_R_IMM4) | |
3167 | { | |
3168 | operands[0].mode = M68XG_OP_R_IMM4; | |
3169 | /* same opcodes have multiple modes, so find right one */ | |
3170 | opcode = find (opc, operands, 1); | |
3171 | if (opcode) | |
3172 | opcode_local.opcode = opcode->opcode | |
3173 | | (operands[0].reg1 << 8); | |
3174 | ||
3175 | if (operands[0].exp.X_op != O_constant) | |
3176 | as_bad ("Only constants supported at for IMM4 mode\n"); | |
3177 | else | |
3178 | { | |
3179 | if (check_range | |
3180 | (operands[0].exp.X_add_number,M68XG_OP_R_IMM4)) | |
3181 | opcode_local.opcode | |
3182 | |= (operands[0].exp.X_add_number << 4); | |
3183 | else | |
3184 | as_bad ("Number out of range for IMM4\n"); | |
3185 | } | |
3186 | opcode_local.format = M68XG_OP_NONE; | |
3187 | } | |
3188 | else if (opcode_local.format & M68XG_OP_R_IMM16) | |
3189 | { | |
3190 | operands[0].mode = M68XG_OP_R_IMM16; | |
3191 | ||
3192 | opcode = find (opc, operands, 1); | |
3193 | if (opcode) | |
3194 | { | |
3195 | opcode_local.opcode = opcode->opcode | |
3196 | | (operands[0].reg1 << 8); | |
3197 | } | |
3198 | } | |
3199 | else | |
3200 | { | |
3201 | opcode_local.opcode = opc->opcode->opcode | |
3202 | | (operands[0].reg1 << 8); | |
3203 | } | |
3204 | build_insn_xg (&opcode_local, operands, 1); | |
3205 | } | |
3206 | } | |
3207 | else if ((*input_line_pointer == 'R') || (*input_line_pointer == 'r')) | |
3208 | { | |
3209 | /* we've got as far as OP R, R */ | |
3210 | operands[1].reg1 = register_name (); | |
3211 | if (operands[1].reg1 == REG_NONE) | |
3212 | { | |
3213 | as_bad ("Invalid register\n"); | |
3214 | return; | |
3215 | } | |
3216 | if ((*input_line_pointer == '\n') || (*input_line_pointer == '\r') | |
3217 | || (*input_line_pointer == '\0')) | |
3218 | { | |
3219 | /* looks like OP_R_R */ | |
3220 | if (opc->format & M68XG_OP_R_R) | |
3221 | { | |
3222 | operands[0].mode = M68XG_OP_R_R; | |
3223 | /* same opcodes have multiple modes, so find right one */ | |
3224 | opcode = find (opc, operands, 1); | |
3225 | if (opcode) | |
3226 | { | |
3227 | if ((strncmp (opc->opcode->name, "com",3) == 0) | |
3228 | || (strncmp (opc->opcode->name, "mov",3) == 0) | |
3229 | || (strncmp (opc->opcode->name, "neg",3) == 0)) | |
3230 | { | |
3231 | /* Special cases for: | |
3232 | com RD, RS alias for xnor RD,R0,RS | |
3233 | mov RD, RS alias for or RD, R0, RS | |
3234 | neg RD, RS alias for sub RD, R0, RS */ | |
3235 | opcode_local.opcode = opcode->opcode | |
3236 | | (operands[0].reg1 << 8) | (operands[1].reg1 << 2); | |
3237 | } | |
3238 | else if ((strncmp (opc->opcode->name, "cmp",3) == 0) | |
3239 | || (strncmp (opc->opcode->name, "cpc",3) == 0)) | |
3240 | { | |
3241 | /* special cases for: | |
3242 | cmp RS1, RS2 alias for sub R0, RS1, RS2 | |
3243 | cpc RS1, RS2 alias for sbc R0, RS1, RS2 */ | |
3244 | opcode_local.opcode = opcode->opcode | |
3245 | | (operands[0].reg1 << 5) | (operands[1].reg1 << 2); | |
3246 | } | |
3247 | else | |
3248 | { | |
3249 | opcode_local.opcode = opcode->opcode | |
3250 | | (operands[0].reg1 << 8) | (operands[1].reg1 << 5); | |
3251 | } | |
3252 | opcode_local.format = M68XG_OP_NONE; | |
3253 | build_insn_xg (&opcode_local, operands, 1); | |
3254 | } | |
3255 | } | |
3256 | else | |
3257 | { | |
3258 | as_bad ("No valid mode found\n"); | |
3259 | } | |
3260 | } | |
3261 | else | |
3262 | { | |
3263 | /* more data */ | |
3264 | if (*input_line_pointer != ',') | |
3265 | { | |
3266 | as_bad (_("Missing operand.")); | |
3267 | return; | |
3268 | } | |
3269 | input_line_pointer++; | |
3270 | input_line_pointer = skip_whites (input_line_pointer); | |
3271 | if ((*input_line_pointer == 'R') || (*input_line_pointer == 'r')) | |
3272 | { | |
3273 | operands[2].reg1 = register_name (); | |
3274 | if (operands[2].reg1 == REG_NONE) | |
3275 | { | |
3276 | as_bad ("Invalid register\n"); | |
3277 | return; | |
3278 | } | |
3279 | if (opc->format & M68XG_OP_R_R_R) | |
3280 | { | |
3281 | operands[0].mode = M68XG_OP_R_R_R; | |
3282 | ||
3283 | opcode = find (opc, operands, 1); | |
3284 | if (opcode) | |
3285 | { | |
3286 | opcode_local.opcode = opcode->opcode | |
3287 | | (operands[0].reg1 << 8) | (operands[1].reg1 << 5) | |
3288 | | (operands[2].reg1 << 2); | |
3289 | opcode_local.format = M68XG_OP_NONE; | |
3290 | build_insn_xg (&opcode_local, operands, 1); | |
3291 | } | |
3292 | } | |
3293 | else | |
3294 | { | |
3295 | as_bad ("No valid mode found\n"); | |
3296 | } | |
3297 | } | |
3298 | } | |
3299 | } | |
3300 | else if (*input_line_pointer == '(') /* Indexed modes */ | |
3301 | { | |
3302 | input_line_pointer++; | |
3303 | input_line_pointer = skip_whites (input_line_pointer); | |
3304 | if ((*input_line_pointer == 'R') || (*input_line_pointer == 'r')) | |
3305 | { | |
3306 | /* we've got as far as OP R, (R */ | |
3307 | operands[1].reg1 = register_name (); | |
3308 | if (operands[1].reg1 == REG_NONE) | |
3309 | { | |
3310 | as_bad ("Invalid register\n"); | |
3311 | return; | |
3312 | } | |
3313 | ||
3314 | if ((*input_line_pointer == '\n') || (*input_line_pointer == '\r') | |
3315 | || (*input_line_pointer == '\0')) | |
3316 | { | |
3317 | /* Looks like OP_R_R. */ | |
3318 | as_bad (_("Missing operand.")); | |
3319 | return; | |
3320 | } | |
3321 | ||
3322 | input_line_pointer = skip_whites (input_line_pointer); | |
3323 | ||
3324 | if (*input_line_pointer != ',') | |
3325 | { | |
3326 | as_bad (_("Missing operand.")); | |
3327 | return; | |
3328 | } | |
3329 | input_line_pointer++; | |
3330 | input_line_pointer = skip_whites (input_line_pointer); | |
3331 | ||
3332 | if (*input_line_pointer == '#') | |
3333 | { | |
3334 | input_line_pointer++; | |
3335 | input_line_pointer = skip_whites (input_line_pointer); | |
3336 | expression (&operands[0].exp); | |
3337 | if (operands[0].exp.X_op == O_illegal) | |
3338 | { | |
3339 | as_bad (_("Illegal operand.")); | |
3340 | return; | |
3341 | } | |
3342 | else if (operands[0].exp.X_op == O_absent) | |
3343 | { | |
3344 | as_bad (_("Missing operand.")); | |
3345 | return; | |
3346 | } | |
3347 | ||
3348 | input_line_pointer = skip_whites (input_line_pointer); | |
3349 | if (*input_line_pointer != ')') | |
3350 | { | |
3351 | as_bad ("Missing `)' to close register indirect operand."); | |
3352 | return; | |
3353 | } | |
3354 | else | |
3355 | { | |
3356 | input_line_pointer++; | |
3357 | } | |
3358 | ||
3359 | /* Ok so far, can only be one mode. */ | |
3360 | opcode_local.format = M68XG_OP_R_R_OFFS5; | |
3361 | operands[0].mode = M68XG_OP_R_R_OFFS5; | |
3362 | ||
3363 | opcode = find (opc, operands, 1); | |
3364 | if (opcode) | |
3365 | { | |
3366 | opcode_local.opcode = opcode->opcode | |
3367 | | (operands[0].reg1 << 8) | (operands[1].reg1 << 5); | |
3368 | if (operands[0].exp.X_op != O_constant) | |
3369 | { | |
3370 | as_bad | |
3371 | ("Only constants supported for indexed OFFS5 mode\n"); | |
3372 | } | |
3373 | else | |
3374 | { | |
3375 | if (check_range (operands[0].exp.X_add_number, | |
3376 | M68XG_OP_R_R_OFFS5)) | |
3377 | { | |
3378 | opcode_local.opcode | |
3379 | |= (operands[0].exp.X_add_number); | |
3380 | opcode_local.format = M68XG_OP_NONE; | |
3381 | build_insn_xg (&opcode_local, operands, 1); | |
3382 | } | |
3383 | else | |
3384 | { | |
3385 | as_bad ("Number out of range for OFFS5\n"); | |
3386 | } | |
3387 | } | |
3388 | } | |
3389 | } | |
3390 | else | |
3391 | { | |
3392 | operands[0].mode = M68XG_OP_RD_RB_RI; | |
3393 | ||
3394 | if (*input_line_pointer == '-') | |
3395 | { | |
3396 | operands[0].mode = M68XG_OP_RD_RB_mRI; | |
3397 | input_line_pointer++; | |
3398 | } | |
3399 | operands[2].reg1 = register_name (); | |
3400 | if (operands[2].reg1 == REG_NONE) | |
3401 | { | |
3402 | as_bad ("Invalid register\n"); | |
3403 | return; | |
3404 | } | |
3405 | ||
3406 | if (*input_line_pointer == '+') | |
3407 | { | |
3408 | if (opcode_local.format == M68XG_OP_RD_RB_mRI) | |
3409 | { | |
3410 | as_bad (_("Illegal operand.")); | |
3411 | return; | |
3412 | } | |
3413 | operands[0].mode = M68XG_OP_RD_RB_RIp; | |
3414 | input_line_pointer++; | |
3415 | } | |
3416 | ||
3417 | input_line_pointer = skip_whites (input_line_pointer); | |
3418 | if (*input_line_pointer != ')') | |
3419 | { | |
3420 | as_bad | |
3421 | ("Missing `)' to close register indirect operand."); | |
3422 | return; | |
3423 | } | |
3424 | else | |
3425 | { | |
3426 | input_line_pointer++; | |
3427 | } | |
3428 | ||
3429 | opcode = find (opc, operands, 1); | |
3430 | if (opcode) | |
3431 | { | |
3432 | opcode_local.opcode = opcode->opcode | |
3433 | | (operands[0].reg1 << 8) | (operands[1].reg1 << 5) | |
3434 | | (operands[2].reg1 << 2); | |
3435 | opcode_local.format = M68XG_OP_NONE; | |
3436 | build_insn_xg (&opcode_local, operands, 1); | |
3437 | } | |
3438 | else | |
3439 | { | |
3440 | as_bad ("Failed to find opcode for %s %s\n", | |
3441 | opc->opcode->name, (char *)op_end); | |
3442 | } | |
3443 | } | |
3444 | } | |
3445 | } | |
3446 | else | |
3447 | { | |
3448 | as_bad (_("Failed to find a valid mode for `%s'."), | |
3449 | opc->opcode->name); | |
3450 | } | |
3451 | ||
3452 | if (opc->opcode && !flag_mri) | |
3453 | { | |
3454 | char *p = input_line_pointer; | |
3455 | ||
3456 | while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r') | |
3457 | p++; | |
3458 | ||
3459 | if (*p != '\n' && *p) | |
3460 | as_bad (_("Garbage at end of instruction: `%s'."), p); | |
3461 | } | |
3462 | ||
3463 | input_line_pointer = save; | |
3464 | ||
3465 | /* Opcode is known but does not have valid operands. Print out the | |
3466 | syntax for this opcode. */ | |
3467 | if (opc->opcode == 0) | |
3468 | { | |
3469 | if (flag_print_insn_syntax) | |
3470 | print_insn_format (name); | |
3471 | ||
3472 | as_bad (_("Invalid operand for `%s'"), name); | |
3473 | return; | |
3474 | } | |
3475 | ||
3476 | return; | |
3477 | } | |
3478 | ||
60bcf0fa NC |
3479 | /* Find the opcode definition given its name. */ |
3480 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, name); | |
3481 | ||
3482 | /* If it's not recognized, look for 'jbsr' and 'jbxx'. These are | |
1370e33d NC |
3483 | pseudo insns for relative branch. For these branches, we always |
3484 | optimize them (turned into absolute branches) even if --short-branches | |
60bcf0fa NC |
3485 | is given. */ |
3486 | if (opc == NULL && name[0] == 'j' && name[1] == 'b') | |
3487 | { | |
3488 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, &name[1]); | |
3489 | if (opc | |
3490 | && (!(opc->format & M6811_OP_JUMP_REL) | |
3491 | || (opc->format & M6811_OP_BITMASK))) | |
3492 | opc = 0; | |
3493 | if (opc) | |
3494 | branch_optimize = 1; | |
3495 | } | |
3496 | ||
6927f982 | 3497 | /* The following test should probably be removed. This does not conform |
60bcf0fa NC |
3498 | to Motorola assembler specs. */ |
3499 | if (opc == NULL && flag_mri) | |
3500 | { | |
3501 | if (*op_end == ' ' || *op_end == '\t') | |
3502 | { | |
3503 | while (*op_end == ' ' || *op_end == '\t') | |
3504 | op_end++; | |
3505 | ||
3506 | if (nlen < 19 | |
3507 | && (*op_end && | |
3508 | (is_end_of_line[op_end[1]] | |
3509 | || op_end[1] == ' ' || op_end[1] == '\t' | |
3882b010 | 3510 | || !ISALNUM (op_end[1]))) |
60bcf0fa NC |
3511 | && (*op_end == 'a' || *op_end == 'b' |
3512 | || *op_end == 'A' || *op_end == 'B' | |
3513 | || *op_end == 'd' || *op_end == 'D' | |
3514 | || *op_end == 'x' || *op_end == 'X' | |
3515 | || *op_end == 'y' || *op_end == 'Y')) | |
3516 | { | |
3882b010 | 3517 | name[nlen++] = TOLOWER (*op_end++); |
60bcf0fa NC |
3518 | name[nlen] = 0; |
3519 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, | |
3520 | name); | |
3521 | } | |
3522 | } | |
3523 | } | |
3524 | ||
3525 | /* Identify a possible instruction alias. There are some on the | |
986c6f4b | 3526 | 68HC12 to emulate a few 68HC11 instructions. */ |
60bcf0fa NC |
3527 | if (opc == NULL && (current_architecture & cpu6812)) |
3528 | { | |
3529 | int i; | |
3530 | ||
3531 | for (i = 0; i < m68hc12_num_alias; i++) | |
3532 | if (strcmp (m68hc12_alias[i].name, name) == 0) | |
3533 | { | |
3534 | alias_id = i; | |
3535 | break; | |
3536 | } | |
3537 | } | |
3538 | if (opc == NULL && alias_id < 0) | |
3539 | { | |
3540 | as_bad (_("Opcode `%s' is not recognized."), name); | |
3541 | return; | |
3542 | } | |
3543 | save = input_line_pointer; | |
2132e3a3 | 3544 | input_line_pointer = (char *) op_end; |
60bcf0fa NC |
3545 | |
3546 | if (opc) | |
3547 | { | |
3548 | opc->used++; | |
3549 | opcode = find_opcode (opc, operands, &nb_operands); | |
3550 | } | |
3551 | else | |
3552 | opcode = 0; | |
3553 | ||
3554 | if ((opcode || alias_id >= 0) && !flag_mri) | |
3555 | { | |
3556 | char *p = input_line_pointer; | |
3557 | ||
3558 | while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r') | |
3559 | p++; | |
3560 | ||
3561 | if (*p != '\n' && *p) | |
3562 | as_bad (_("Garbage at end of instruction: `%s'."), p); | |
3563 | } | |
3564 | ||
3565 | input_line_pointer = save; | |
3566 | ||
3567 | if (alias_id >= 0) | |
3568 | { | |
3569 | char *f = m68hc11_new_insn (m68hc12_alias[alias_id].size); | |
fafb6d17 | 3570 | |
60bcf0fa NC |
3571 | number_to_chars_bigendian (f, m68hc12_alias[alias_id].code1, 1); |
3572 | if (m68hc12_alias[alias_id].size > 1) | |
3573 | number_to_chars_bigendian (f + 1, m68hc12_alias[alias_id].code2, 1); | |
3574 | ||
3575 | return; | |
3576 | } | |
3577 | ||
3578 | /* Opcode is known but does not have valid operands. Print out the | |
3579 | syntax for this opcode. */ | |
3580 | if (opcode == 0) | |
3581 | { | |
3582 | if (flag_print_insn_syntax) | |
3583 | print_insn_format (name); | |
3584 | ||
6927f982 NC |
3585 | if (((strcmp (name, "movb") == 0) || (strcmp (name, "movw") == 0)) |
3586 | && (current_architecture & cpu9s12x)) | |
3587 | { | |
3588 | char *f; | |
3589 | int movb; | |
3590 | if (strcmp (name, "movb") == 0) | |
3591 | movb = 8; | |
3592 | else | |
3593 | movb = 0; | |
3594 | ||
3595 | /* The existing operand extract code fell over if these additional modes | |
3596 | were enabled in m68hc11-opc.c. So they are commented there and | |
3597 | decoded here instead. */ | |
3598 | ||
3599 | if (operands[1].mode & (M6812_OP_IDX | M6812_OP_IDX_1 | |
3600 | | M6812_OP_IDX_2 | M6812_OP_D_IDX | M6812_OP_D_IDX_2 | M6812_PRE_INC | |
3601 | | M6812_PRE_DEC | M6812_POST_INC | M6812_POST_DEC )) | |
3602 | { | |
3603 | /* first check if valid mode then start building it up */ | |
3604 | if (operands[0].mode & (M6811_OP_IMM8 | M6811_OP_IMM16 | |
3605 | | M6811_OP_IND16 | M6812_OP_IDX | M6812_OP_IDX_1 | |
3606 | | M6812_OP_IDX_2 | M6812_OP_D_IDX | M6812_OP_D_IDX_2)) | |
3607 | { | |
3608 | int opr16a; | |
3609 | if (operands[1].mode & (M6811_OP_IND16)) | |
3610 | opr16a = 3; | |
3611 | else | |
3612 | opr16a = 0; | |
3613 | ||
3614 | f = m68hc11_new_insn (2); | |
3615 | ||
3616 | if (operands[0].mode & (M6811_OP_IMM8 | M6811_OP_IMM16)) | |
3617 | { | |
3618 | number_to_chars_bigendian (f, 0x1800 + movb + opr16a, 2); | |
3619 | build_indexed_byte (&operands[1], operands[1].mode, 1); | |
3620 | if (movb) | |
3621 | fixup8 (&operands[0].exp, M6811_OP_IMM8, | |
3622 | operands[0].mode); | |
3623 | else | |
3624 | fixup16 (&operands[0].exp, M6811_OP_IMM16, | |
3625 | operands[0].mode); | |
3626 | ||
3627 | return; | |
3628 | } | |
3629 | else if (operands[0].mode & M6811_OP_IND16) | |
3630 | { | |
3631 | number_to_chars_bigendian (f, 0x1801 + movb + opr16a, 2); | |
3632 | build_indexed_byte (&operands[1], operands[1].mode, 1); | |
3633 | fixup16 (&operands[0].exp, M6811_OP_IND16, operands[0].mode); | |
3634 | return; | |
3635 | } | |
3636 | else | |
3637 | { | |
3638 | number_to_chars_bigendian (f, 0x1802 + movb + opr16a, 2); | |
3639 | build_indexed_byte (&operands[0], operands[0].mode, 1); | |
3640 | build_indexed_byte (&operands[1], operands[1].mode, 1); | |
3641 | return; | |
3642 | } | |
3643 | } | |
3644 | } | |
3645 | else if (operands[1].mode & M6811_OP_IND16) | |
3646 | { | |
3647 | /* First check if this is valid mode, then start building it up. */ | |
3648 | if (operands[0].mode & (M6811_OP_IMM8 | M6811_OP_IMM16 | |
3649 | | M6811_OP_IND16 | M6812_OP_IDX | M6812_OP_IDX_1 | |
3650 | | M6812_OP_IDX_2 | M6812_OP_D_IDX | M6812_OP_D_IDX_2)) | |
3651 | { | |
3652 | int opr16a; | |
3653 | if (operands[1].mode & (M6811_OP_IND16)) | |
3654 | opr16a = 3; | |
3655 | else | |
3656 | opr16a = 0; | |
3657 | ||
3658 | f = m68hc11_new_insn (2); | |
3659 | ||
3660 | /* The first two cases here should actually be covered by the | |
3661 | normal operand code. */ | |
3662 | if (operands[0].mode & (M6811_OP_IMM8 | M6811_OP_IMM16)) | |
3663 | { | |
3664 | number_to_chars_bigendian (f, 0x1800 + movb + opr16a, 2); | |
3665 | if (movb) | |
3666 | fixup8 (&operands[0].exp, M6811_OP_IMM8, operands[0].mode); | |
3667 | else | |
3668 | fixup16 (&operands[0].exp, M6811_OP_IMM16, operands[0].mode); | |
3669 | ||
3670 | fixup16 (&operands[0].exp, M6811_OP_IND16, operands[0].mode); | |
3671 | return; | |
3672 | } | |
3673 | else if (operands[0].mode & M6811_OP_IND16) | |
3674 | { | |
3675 | number_to_chars_bigendian (f, 0x1801 + movb + opr16a, 2); | |
3676 | build_indexed_byte (&operands[1], operands[1].mode, 1); | |
3677 | fixup16 (&operands[0].exp, M6811_OP_IND16, operands[0].mode); | |
3678 | return; | |
3679 | } | |
3680 | else | |
3681 | { | |
3682 | number_to_chars_bigendian (f, 0x1802 + movb + opr16a, 2); | |
3683 | build_indexed_byte (&operands[0], operands[0].mode, 1); | |
3684 | fixup16 (&operands[1].exp, M6811_OP_IND16, operands[1].mode); | |
3685 | return; | |
3686 | } | |
3687 | } | |
3688 | } | |
3689 | ||
3690 | as_bad (_("Invalid operand for `%s'"), name); | |
3691 | return; | |
3692 | ||
3693 | } | |
3694 | else | |
3695 | { | |
3696 | as_bad (_("Invalid operand for `%s'"), name); | |
3697 | return; | |
3698 | } | |
60bcf0fa NC |
3699 | } |
3700 | ||
3701 | /* Treat dbeq/ibeq/tbeq instructions in a special way. The branch is | |
3702 | relative and must be in the range -256..255 (9-bits). */ | |
3703 | if ((opcode->format & M6812_XBCC_MARKER) | |
3704 | && (opcode->format & M6811_OP_JUMP_REL)) | |
27302d63 | 3705 | build_dbranch_insn (opcode, operands, nb_operands, branch_optimize); |
60bcf0fa NC |
3706 | |
3707 | /* Relative jumps instructions are taken care of separately. We have to make | |
3708 | sure that the relative branch is within the range -128..127. If it's out | |
3709 | of range, the instructions are changed into absolute instructions. | |
3710 | This is not supported for the brset and brclr instructions. */ | |
3711 | else if ((opcode->format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
3712 | && !(opcode->format & M6811_OP_BITMASK)) | |
3713 | build_jump_insn (opcode, operands, nb_operands, branch_optimize); | |
3714 | else | |
3715 | build_insn (opcode, operands, nb_operands); | |
3716 | } | |
eb086b59 SC |
3717 | |
3718 | \f | |
3719 | /* Pseudo op to control the ELF flags. */ | |
3720 | static void | |
ca43c854 | 3721 | s_m68hc11_mode (int x ATTRIBUTE_UNUSED) |
eb086b59 SC |
3722 | { |
3723 | char *name = input_line_pointer, ch; | |
3724 | ||
3725 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
3726 | input_line_pointer++; | |
3727 | ch = *input_line_pointer; | |
3728 | *input_line_pointer = '\0'; | |
3729 | ||
3730 | if (strcmp (name, "mshort") == 0) | |
3731 | { | |
3732 | elf_flags &= ~E_M68HC11_I32; | |
3733 | } | |
3734 | else if (strcmp (name, "mlong") == 0) | |
3735 | { | |
3736 | elf_flags |= E_M68HC11_I32; | |
3737 | } | |
3738 | else if (strcmp (name, "mshort-double") == 0) | |
3739 | { | |
3740 | elf_flags &= ~E_M68HC11_F64; | |
3741 | } | |
3742 | else if (strcmp (name, "mlong-double") == 0) | |
3743 | { | |
3744 | elf_flags |= E_M68HC11_F64; | |
3745 | } | |
3746 | else | |
3747 | { | |
3748 | as_warn (_("Invalid mode: %s\n"), name); | |
3749 | } | |
3750 | *input_line_pointer = ch; | |
3751 | demand_empty_rest_of_line (); | |
3752 | } | |
3753 | ||
3754 | /* Mark the symbols with STO_M68HC12_FAR to indicate the functions | |
3755 | are using 'rtc' for returning. It is necessary to use 'call' | |
3756 | to invoke them. This is also used by the debugger to correctly | |
3757 | find the stack frame. */ | |
3758 | static void | |
ca43c854 | 3759 | s_m68hc11_mark_symbol (int mark) |
eb086b59 SC |
3760 | { |
3761 | char *name; | |
3762 | int c; | |
3763 | symbolS *symbolP; | |
3764 | asymbol *bfdsym; | |
3765 | elf_symbol_type *elfsym; | |
3766 | ||
3767 | do | |
3768 | { | |
3769 | name = input_line_pointer; | |
3770 | c = get_symbol_end (); | |
3771 | symbolP = symbol_find_or_make (name); | |
3772 | *input_line_pointer = c; | |
3773 | ||
3774 | SKIP_WHITESPACE (); | |
3775 | ||
3776 | bfdsym = symbol_get_bfdsym (symbolP); | |
3777 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
3778 | ||
9c2799c2 | 3779 | gas_assert (elfsym); |
eb086b59 SC |
3780 | |
3781 | /* Mark the symbol far (using rtc for function return). */ | |
3782 | elfsym->internal_elf_sym.st_other |= mark; | |
3783 | ||
3784 | if (c == ',') | |
3785 | { | |
3786 | input_line_pointer ++; | |
3787 | ||
3788 | SKIP_WHITESPACE (); | |
3789 | ||
3790 | if (*input_line_pointer == '\n') | |
3791 | c = '\n'; | |
3792 | } | |
3793 | } | |
3794 | while (c == ','); | |
3795 | ||
3796 | demand_empty_rest_of_line (); | |
3797 | } | |
e371935f SC |
3798 | |
3799 | static void | |
ca43c854 | 3800 | s_m68hc11_relax (int ignore ATTRIBUTE_UNUSED) |
e371935f SC |
3801 | { |
3802 | expressionS ex; | |
3803 | ||
3804 | expression (&ex); | |
3805 | ||
3806 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
3807 | { | |
3808 | as_bad (_("bad .relax format")); | |
3809 | ignore_rest_of_line (); | |
3810 | return; | |
3811 | } | |
3812 | ||
fd99afa7 | 3813 | fix_new_exp (frag_now, frag_now_fix (), 0, &ex, 1, |
e371935f SC |
3814 | BFD_RELOC_M68HC11_RL_GROUP); |
3815 | ||
3816 | demand_empty_rest_of_line (); | |
3817 | } | |
3818 | ||
60bcf0fa NC |
3819 | \f |
3820 | /* Relocation, relaxation and frag conversions. */ | |
e371935f SC |
3821 | |
3822 | /* PC-relative offsets are relative to the start of the | |
3823 | next instruction. That is, the address of the offset, plus its | |
3824 | size, since the offset is always the last part of the insn. */ | |
60bcf0fa | 3825 | long |
ca43c854 | 3826 | md_pcrel_from (fixS *fixP) |
60bcf0fa | 3827 | { |
e371935f | 3828 | if (fixP->fx_r_type == BFD_RELOC_M68HC11_RL_JUMP) |
60bcf0fa NC |
3829 | return 0; |
3830 | ||
e371935f | 3831 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
60bcf0fa NC |
3832 | } |
3833 | ||
3834 | /* If while processing a fixup, a reloc really needs to be created | |
3835 | then it is done here. */ | |
3836 | arelent * | |
ca43c854 | 3837 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
60bcf0fa NC |
3838 | { |
3839 | arelent *reloc; | |
3840 | ||
3841 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
3842 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
3843 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
3844 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
3845 | if (fixp->fx_r_type == 0) | |
3846 | reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16); | |
3847 | else | |
3848 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
3849 | if (reloc->howto == (reloc_howto_type *) NULL) | |
3850 | { | |
3851 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
3852 | _("Relocation %d is not supported by object file format."), | |
3853 | (int) fixp->fx_r_type); | |
3854 | return NULL; | |
3855 | } | |
3856 | ||
a161fe53 AM |
3857 | /* Since we use Rel instead of Rela, encode the vtable entry to be |
3858 | used in the relocation's section offset. */ | |
3859 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
3860 | reloc->address = fixp->fx_offset; | |
3861 | ||
3862 | reloc->addend = 0; | |
60bcf0fa NC |
3863 | return reloc; |
3864 | } | |
3865 | ||
c9e03e8b SC |
3866 | /* We need a port-specific relaxation function to cope with sym2 - sym1 |
3867 | relative expressions with both symbols in the same segment (but not | |
3868 | necessarily in the same frag as this insn), for example: | |
3869 | ldab sym2-(sym1-2),pc | |
3870 | sym1: | |
3871 | The offset can be 5, 9 or 16 bits long. */ | |
3872 | ||
3873 | long | |
ca43c854 SC |
3874 | m68hc11_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS *fragP, |
3875 | long stretch ATTRIBUTE_UNUSED) | |
c9e03e8b SC |
3876 | { |
3877 | long growth; | |
3878 | offsetT aim = 0; | |
3879 | symbolS *symbolP; | |
3880 | const relax_typeS *this_type; | |
3881 | const relax_typeS *start_type; | |
3882 | relax_substateT next_state; | |
3883 | relax_substateT this_state; | |
3884 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; | |
3885 | ||
3886 | /* We only have to cope with frags as prepared by | |
3887 | md_estimate_size_before_relax. The STATE_BITS16 case may geet here | |
3888 | because of the different reasons that it's not relaxable. */ | |
3889 | switch (fragP->fr_subtype) | |
3890 | { | |
75538612 | 3891 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS16): |
c9e03e8b SC |
3892 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS16): |
3893 | /* When we get to this state, the frag won't grow any more. */ | |
3894 | return 0; | |
3895 | ||
75538612 | 3896 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS5): |
c9e03e8b | 3897 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS5): |
75538612 | 3898 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS9): |
c9e03e8b SC |
3899 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS9): |
3900 | if (fragP->fr_symbol == NULL | |
3901 | || S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) | |
3902 | as_fatal (_("internal inconsistency problem in %s: fr_symbol %lx"), | |
3903 | __FUNCTION__, (long) fragP->fr_symbol); | |
3904 | symbolP = fragP->fr_symbol; | |
3905 | if (symbol_resolved_p (symbolP)) | |
3906 | as_fatal (_("internal inconsistency problem in %s: resolved symbol"), | |
3907 | __FUNCTION__); | |
3908 | aim = S_GET_VALUE (symbolP); | |
3909 | break; | |
3910 | ||
3911 | default: | |
3912 | as_fatal (_("internal inconsistency problem in %s: fr_subtype %d"), | |
3913 | __FUNCTION__, fragP->fr_subtype); | |
3914 | } | |
3915 | ||
3916 | /* The rest is stolen from relax_frag. There's no obvious way to | |
3917 | share the code, but fortunately no requirement to keep in sync as | |
3918 | long as fragP->fr_symbol does not have its segment changed. */ | |
3919 | ||
3920 | this_state = fragP->fr_subtype; | |
3921 | start_type = this_type = table + this_state; | |
3922 | ||
3923 | if (aim < 0) | |
3924 | { | |
3925 | /* Look backwards. */ | |
3926 | for (next_state = this_type->rlx_more; next_state;) | |
3927 | if (aim >= this_type->rlx_backward) | |
3928 | next_state = 0; | |
3929 | else | |
3930 | { | |
3931 | /* Grow to next state. */ | |
3932 | this_state = next_state; | |
3933 | this_type = table + this_state; | |
3934 | next_state = this_type->rlx_more; | |
3935 | } | |
3936 | } | |
3937 | else | |
3938 | { | |
3939 | /* Look forwards. */ | |
3940 | for (next_state = this_type->rlx_more; next_state;) | |
3941 | if (aim <= this_type->rlx_forward) | |
3942 | next_state = 0; | |
3943 | else | |
3944 | { | |
3945 | /* Grow to next state. */ | |
3946 | this_state = next_state; | |
3947 | this_type = table + this_state; | |
3948 | next_state = this_type->rlx_more; | |
3949 | } | |
3950 | } | |
3951 | ||
3952 | growth = this_type->rlx_length - start_type->rlx_length; | |
3953 | if (growth != 0) | |
3954 | fragP->fr_subtype = this_state; | |
3955 | return growth; | |
3956 | } | |
3957 | ||
60bcf0fa | 3958 | void |
ca43c854 SC |
3959 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, asection *sec ATTRIBUTE_UNUSED, |
3960 | fragS *fragP) | |
60bcf0fa NC |
3961 | { |
3962 | fixS *fixp; | |
88051039 | 3963 | long value; |
60bcf0fa NC |
3964 | long disp; |
3965 | char *buffer_address = fragP->fr_literal; | |
3966 | ||
3967 | /* Address in object code of the displacement. */ | |
3968 | register int object_address = fragP->fr_fix + fragP->fr_address; | |
3969 | ||
3970 | buffer_address += fragP->fr_fix; | |
3971 | ||
3972 | /* The displacement of the address, from current location. */ | |
ac62c346 | 3973 | value = S_GET_VALUE (fragP->fr_symbol); |
88051039 | 3974 | disp = (value + fragP->fr_offset) - object_address; |
60bcf0fa NC |
3975 | |
3976 | switch (fragP->fr_subtype) | |
3977 | { | |
3978 | case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE): | |
3979 | fragP->fr_opcode[1] = disp; | |
3980 | break; | |
3981 | ||
3982 | case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_WORD): | |
3983 | /* This relax is only for bsr and bra. */ | |
9c2799c2 | 3984 | gas_assert (IS_OPCODE (fragP->fr_opcode[0], M6811_BSR) |
60bcf0fa NC |
3985 | || IS_OPCODE (fragP->fr_opcode[0], M6811_BRA) |
3986 | || IS_OPCODE (fragP->fr_opcode[0], M6812_BSR)); | |
3987 | ||
3988 | fragP->fr_opcode[0] = convert_branch (fragP->fr_opcode[0]); | |
3989 | ||
3990 | fix_new (fragP, fragP->fr_fix - 1, 2, | |
3991 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
3992 | fragP->fr_fix += 1; | |
3993 | break; | |
3994 | ||
3995 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_BYTE): | |
3996 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_BYTE): | |
3997 | fragP->fr_opcode[1] = disp; | |
3998 | break; | |
3999 | ||
4000 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_WORD): | |
4001 | /* Invert branch. */ | |
4002 | fragP->fr_opcode[0] ^= 1; | |
fafb6d17 | 4003 | fragP->fr_opcode[1] = 3; /* Branch offset. */ |
60bcf0fa NC |
4004 | buffer_address[0] = M6811_JMP; |
4005 | fix_new (fragP, fragP->fr_fix + 1, 2, | |
4006 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
4007 | fragP->fr_fix += 3; | |
4008 | break; | |
4009 | ||
4010 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_WORD): | |
4011 | /* Translate branch into a long branch. */ | |
4012 | fragP->fr_opcode[1] = fragP->fr_opcode[0]; | |
4013 | fragP->fr_opcode[0] = M6811_OPCODE_PAGE2; | |
4014 | ||
4015 | fixp = fix_new (fragP, fragP->fr_fix, 2, | |
4016 | fragP->fr_symbol, fragP->fr_offset, 1, | |
4017 | BFD_RELOC_16_PCREL); | |
4018 | fixp->fx_pcrel_adjust = 2; | |
4019 | fragP->fr_fix += 2; | |
4020 | break; | |
4021 | ||
75538612 SC |
4022 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS5): |
4023 | if (fragP->fr_symbol != 0 | |
c9e03e8b SC |
4024 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) |
4025 | value = disp; | |
75538612 SC |
4026 | /* fall through */ |
4027 | ||
4028 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS5): | |
88051039 | 4029 | fragP->fr_opcode[0] = fragP->fr_opcode[0] << 6; |
c9e03e8b | 4030 | fragP->fr_opcode[0] |= value & 0x1f; |
60bcf0fa NC |
4031 | break; |
4032 | ||
75538612 SC |
4033 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS9): |
4034 | /* For a PC-relative offset, use the displacement with a -1 correction | |
4035 | to take into account the additional byte of the insn. */ | |
4036 | if (fragP->fr_symbol != 0 | |
c9e03e8b | 4037 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) |
75538612 SC |
4038 | value = disp - 1; |
4039 | /* fall through */ | |
4040 | ||
4041 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS9): | |
60bcf0fa NC |
4042 | fragP->fr_opcode[0] = (fragP->fr_opcode[0] << 3); |
4043 | fragP->fr_opcode[0] |= 0xE0; | |
c9e03e8b SC |
4044 | fragP->fr_opcode[0] |= (value >> 8) & 1; |
4045 | fragP->fr_opcode[1] = value; | |
60bcf0fa NC |
4046 | fragP->fr_fix += 1; |
4047 | break; | |
4048 | ||
75538612 | 4049 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS16): |
60bcf0fa NC |
4050 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS16): |
4051 | fragP->fr_opcode[0] = (fragP->fr_opcode[0] << 3); | |
88051039 | 4052 | fragP->fr_opcode[0] |= 0xe2; |
c9e03e8b SC |
4053 | if ((fragP->fr_opcode[0] & 0x0ff) == 0x0fa |
4054 | && fragP->fr_symbol != 0 | |
4055 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) | |
098f2ec3 KH |
4056 | { |
4057 | fixp = fix_new (fragP, fragP->fr_fix, 2, | |
4058 | fragP->fr_symbol, fragP->fr_offset, | |
4059 | 1, BFD_RELOC_16_PCREL); | |
098f2ec3 | 4060 | } |
88051039 | 4061 | else |
098f2ec3 KH |
4062 | { |
4063 | fix_new (fragP, fragP->fr_fix, 2, | |
4064 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
4065 | } | |
88051039 | 4066 | fragP->fr_fix += 2; |
60bcf0fa NC |
4067 | break; |
4068 | ||
4069 | case ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_BYTE): | |
4070 | if (disp < 0) | |
4071 | fragP->fr_opcode[0] |= 0x10; | |
4072 | ||
4073 | fragP->fr_opcode[1] = disp & 0x0FF; | |
4074 | break; | |
4075 | ||
4076 | case ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_WORD): | |
4077 | /* Invert branch. */ | |
4078 | fragP->fr_opcode[0] ^= 0x20; | |
4079 | fragP->fr_opcode[1] = 3; /* Branch offset. */ | |
4080 | buffer_address[0] = M6812_JMP; | |
4081 | fix_new (fragP, fragP->fr_fix + 1, 2, | |
4082 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
4083 | fragP->fr_fix += 3; | |
4084 | break; | |
4085 | ||
4086 | default: | |
4087 | break; | |
4088 | } | |
4089 | } | |
4090 | ||
dbb8ad49 SC |
4091 | /* On an ELF system, we can't relax a weak symbol. The weak symbol |
4092 | can be overridden at final link time by a non weak symbol. We can | |
4093 | relax externally visible symbol because there is no shared library | |
4094 | and such symbol can't be overridden (unless they are weak). */ | |
d8273f3b | 4095 | static int |
ca43c854 | 4096 | relaxable_symbol (symbolS *symbol) |
d8273f3b | 4097 | { |
dbb8ad49 | 4098 | return ! S_IS_WEAK (symbol); |
d8273f3b SC |
4099 | } |
4100 | ||
60bcf0fa NC |
4101 | /* Force truly undefined symbols to their maximum size, and generally set up |
4102 | the frag list to be relaxed. */ | |
4103 | int | |
ca43c854 | 4104 | md_estimate_size_before_relax (fragS *fragP, asection *segment) |
60bcf0fa | 4105 | { |
606ab118 AM |
4106 | if (RELAX_LENGTH (fragP->fr_subtype) == STATE_UNDF) |
4107 | { | |
4108 | if (S_GET_SEGMENT (fragP->fr_symbol) != segment | |
577300ce SC |
4109 | || !relaxable_symbol (fragP->fr_symbol) |
4110 | || (segment != absolute_section | |
4111 | && RELAX_STATE (fragP->fr_subtype) == STATE_INDEXED_OFFSET)) | |
606ab118 AM |
4112 | { |
4113 | /* Non-relaxable cases. */ | |
4114 | int old_fr_fix; | |
4115 | char *buffer_address; | |
60bcf0fa | 4116 | |
606ab118 AM |
4117 | old_fr_fix = fragP->fr_fix; |
4118 | buffer_address = fragP->fr_fix + fragP->fr_literal; | |
60bcf0fa | 4119 | |
606ab118 AM |
4120 | switch (RELAX_STATE (fragP->fr_subtype)) |
4121 | { | |
4122 | case STATE_PC_RELATIVE: | |
4123 | ||
4124 | /* This relax is only for bsr and bra. */ | |
9c2799c2 | 4125 | gas_assert (IS_OPCODE (fragP->fr_opcode[0], M6811_BSR) |
606ab118 AM |
4126 | || IS_OPCODE (fragP->fr_opcode[0], M6811_BRA) |
4127 | || IS_OPCODE (fragP->fr_opcode[0], M6812_BSR)); | |
4128 | ||
1370e33d | 4129 | if (flag_fixed_branches) |
606ab118 AM |
4130 | as_bad_where (fragP->fr_file, fragP->fr_line, |
4131 | _("bra or bsr with undefined symbol.")); | |
4132 | ||
4133 | /* The symbol is undefined or in a separate section. | |
4134 | Turn bra into a jmp and bsr into a jsr. The insn | |
4135 | becomes 3 bytes long (instead of 2). A fixup is | |
4136 | necessary for the unresolved symbol address. */ | |
4137 | fragP->fr_opcode[0] = convert_branch (fragP->fr_opcode[0]); | |
4138 | ||
13283e2d | 4139 | fix_new (fragP, fragP->fr_fix - 1, 2, fragP->fr_symbol, |
606ab118 | 4140 | fragP->fr_offset, 0, BFD_RELOC_16); |
13283e2d | 4141 | fragP->fr_fix++; |
606ab118 | 4142 | break; |
60bcf0fa | 4143 | |
606ab118 | 4144 | case STATE_CONDITIONAL_BRANCH: |
9c2799c2 | 4145 | gas_assert (current_architecture & cpu6811); |
60bcf0fa | 4146 | |
606ab118 AM |
4147 | fragP->fr_opcode[0] ^= 1; /* Reverse sense of branch. */ |
4148 | fragP->fr_opcode[1] = 3; /* Skip next jmp insn (3 bytes). */ | |
60bcf0fa | 4149 | |
606ab118 AM |
4150 | /* Don't use fr_opcode[2] because this may be |
4151 | in a different frag. */ | |
4152 | buffer_address[0] = M6811_JMP; | |
60bcf0fa | 4153 | |
606ab118 AM |
4154 | fragP->fr_fix++; |
4155 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
4156 | fragP->fr_offset, 0, BFD_RELOC_16); | |
4157 | fragP->fr_fix += 2; | |
4158 | break; | |
60bcf0fa | 4159 | |
606ab118 | 4160 | case STATE_INDEXED_OFFSET: |
9c2799c2 | 4161 | gas_assert (current_architecture & cpu6812); |
60bcf0fa | 4162 | |
c9e03e8b SC |
4163 | if (fragP->fr_symbol |
4164 | && S_GET_SEGMENT (fragP->fr_symbol) == absolute_section) | |
4165 | { | |
4166 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_OFFSET, | |
4167 | STATE_BITS5); | |
4168 | /* Return the size of the variable part of the frag. */ | |
4169 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
4170 | } | |
4171 | else | |
4172 | { | |
4173 | /* Switch the indexed operation to 16-bit mode. */ | |
4174 | fragP->fr_opcode[0] = fragP->fr_opcode[0] << 3; | |
4175 | fragP->fr_opcode[0] |= 0xe2; | |
4176 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
4177 | fragP->fr_offset, 0, BFD_RELOC_16); | |
4178 | fragP->fr_fix += 2; | |
4179 | } | |
606ab118 | 4180 | break; |
60bcf0fa | 4181 | |
75538612 | 4182 | case STATE_INDEXED_PCREL: |
9c2799c2 | 4183 | gas_assert (current_architecture & cpu6812); |
75538612 SC |
4184 | |
4185 | if (fragP->fr_symbol | |
4186 | && S_GET_SEGMENT (fragP->fr_symbol) == absolute_section) | |
4187 | { | |
4188 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_PCREL, | |
4189 | STATE_BITS5); | |
4190 | /* Return the size of the variable part of the frag. */ | |
4191 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
4192 | } | |
4193 | else | |
4194 | { | |
75538612 SC |
4195 | fragP->fr_opcode[0] = fragP->fr_opcode[0] << 3; |
4196 | fragP->fr_opcode[0] |= 0xe2; | |
87975d2a AM |
4197 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, |
4198 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); | |
75538612 SC |
4199 | fragP->fr_fix += 2; |
4200 | } | |
4201 | break; | |
4202 | ||
606ab118 | 4203 | case STATE_XBCC_BRANCH: |
9c2799c2 | 4204 | gas_assert (current_architecture & cpu6812); |
606ab118 AM |
4205 | |
4206 | fragP->fr_opcode[0] ^= 0x20; /* Reverse sense of branch. */ | |
4207 | fragP->fr_opcode[1] = 3; /* Skip next jmp insn (3 bytes). */ | |
60bcf0fa | 4208 | |
606ab118 AM |
4209 | /* Don't use fr_opcode[2] because this may be |
4210 | in a different frag. */ | |
4211 | buffer_address[0] = M6812_JMP; | |
4212 | ||
4213 | fragP->fr_fix++; | |
4214 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
4215 | fragP->fr_offset, 0, BFD_RELOC_16); | |
4216 | fragP->fr_fix += 2; | |
4217 | break; | |
60bcf0fa | 4218 | |
606ab118 | 4219 | case STATE_CONDITIONAL_BRANCH_6812: |
9c2799c2 | 4220 | gas_assert (current_architecture & cpu6812); |
606ab118 AM |
4221 | |
4222 | /* Translate into a lbcc branch. */ | |
4223 | fragP->fr_opcode[1] = fragP->fr_opcode[0]; | |
4224 | fragP->fr_opcode[0] = M6811_OPCODE_PAGE2; | |
4225 | ||
4226 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
e371935f | 4227 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); |
606ab118 AM |
4228 | fragP->fr_fix += 2; |
4229 | break; | |
4230 | ||
4231 | default: | |
4232 | as_fatal (_("Subtype %d is not recognized."), fragP->fr_subtype); | |
4233 | } | |
60bcf0fa | 4234 | frag_wane (fragP); |
60bcf0fa | 4235 | |
606ab118 AM |
4236 | /* Return the growth in the fixed part of the frag. */ |
4237 | return fragP->fr_fix - old_fr_fix; | |
4238 | } | |
60bcf0fa | 4239 | |
606ab118 AM |
4240 | /* Relaxable cases. */ |
4241 | switch (RELAX_STATE (fragP->fr_subtype)) | |
60bcf0fa | 4242 | { |
606ab118 AM |
4243 | case STATE_PC_RELATIVE: |
4244 | /* This relax is only for bsr and bra. */ | |
9c2799c2 | 4245 | gas_assert (IS_OPCODE (fragP->fr_opcode[0], M6811_BSR) |
606ab118 AM |
4246 | || IS_OPCODE (fragP->fr_opcode[0], M6811_BRA) |
4247 | || IS_OPCODE (fragP->fr_opcode[0], M6812_BSR)); | |
4248 | ||
4249 | fragP->fr_subtype = ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE); | |
4250 | break; | |
4251 | ||
4252 | case STATE_CONDITIONAL_BRANCH: | |
9c2799c2 | 4253 | gas_assert (current_architecture & cpu6811); |
606ab118 AM |
4254 | |
4255 | fragP->fr_subtype = ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, | |
4256 | STATE_BYTE); | |
4257 | break; | |
4258 | ||
4259 | case STATE_INDEXED_OFFSET: | |
9c2799c2 | 4260 | gas_assert (current_architecture & cpu6812); |
606ab118 | 4261 | |
60bcf0fa NC |
4262 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_OFFSET, |
4263 | STATE_BITS5); | |
606ab118 | 4264 | break; |
60bcf0fa | 4265 | |
75538612 | 4266 | case STATE_INDEXED_PCREL: |
9c2799c2 | 4267 | gas_assert (current_architecture & cpu6812); |
75538612 SC |
4268 | |
4269 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_PCREL, | |
4270 | STATE_BITS5); | |
4271 | break; | |
4272 | ||
606ab118 | 4273 | case STATE_XBCC_BRANCH: |
9c2799c2 | 4274 | gas_assert (current_architecture & cpu6812); |
60bcf0fa | 4275 | |
60bcf0fa | 4276 | fragP->fr_subtype = ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_BYTE); |
606ab118 | 4277 | break; |
60bcf0fa | 4278 | |
606ab118 | 4279 | case STATE_CONDITIONAL_BRANCH_6812: |
9c2799c2 | 4280 | gas_assert (current_architecture & cpu6812); |
60bcf0fa | 4281 | |
60bcf0fa NC |
4282 | fragP->fr_subtype = ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, |
4283 | STATE_BYTE); | |
606ab118 | 4284 | break; |
60bcf0fa | 4285 | } |
60bcf0fa NC |
4286 | } |
4287 | ||
606ab118 AM |
4288 | if (fragP->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0])) |
4289 | as_fatal (_("Subtype %d is not recognized."), fragP->fr_subtype); | |
4290 | ||
4291 | /* Return the size of the variable part of the frag. */ | |
4292 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
60bcf0fa NC |
4293 | } |
4294 | ||
e371935f SC |
4295 | /* See whether we need to force a relocation into the output file. */ |
4296 | int | |
ca43c854 | 4297 | tc_m68hc11_force_relocation (fixS *fixP) |
e371935f | 4298 | { |
ae6063d4 AM |
4299 | if (fixP->fx_r_type == BFD_RELOC_M68HC11_RL_GROUP) |
4300 | return 1; | |
a161fe53 | 4301 | |
ae6063d4 | 4302 | return generic_force_reloc (fixP); |
e371935f SC |
4303 | } |
4304 | ||
4305 | /* Here we decide which fixups can be adjusted to make them relative | |
4306 | to the beginning of the section instead of the symbol. Basically | |
4307 | we need to make sure that the linker relaxation is done | |
4308 | correctly, so in some cases we force the original symbol to be | |
4309 | used. */ | |
4310 | int | |
ca43c854 | 4311 | tc_m68hc11_fix_adjustable (fixS *fixP) |
e371935f | 4312 | { |
e371935f SC |
4313 | switch (fixP->fx_r_type) |
4314 | { | |
4315 | /* For the linker relaxation to work correctly, these relocs | |
4316 | need to be on the symbol itself. */ | |
4317 | case BFD_RELOC_16: | |
e371935f SC |
4318 | case BFD_RELOC_M68HC11_RL_JUMP: |
4319 | case BFD_RELOC_M68HC11_RL_GROUP: | |
4320 | case BFD_RELOC_VTABLE_INHERIT: | |
4321 | case BFD_RELOC_VTABLE_ENTRY: | |
577300ce | 4322 | case BFD_RELOC_32: |
2d94a61a SC |
4323 | |
4324 | /* The memory bank addressing translation also needs the original | |
4325 | symbol. */ | |
577300ce | 4326 | case BFD_RELOC_M68HC11_LO16: |
2d94a61a SC |
4327 | case BFD_RELOC_M68HC11_PAGE: |
4328 | case BFD_RELOC_M68HC11_24: | |
e371935f SC |
4329 | return 0; |
4330 | ||
e371935f SC |
4331 | default: |
4332 | return 1; | |
4333 | } | |
4334 | } | |
4335 | ||
94f592af | 4336 | void |
55cf6793 | 4337 | md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
60bcf0fa NC |
4338 | { |
4339 | char *where; | |
94f592af | 4340 | long value = * valP; |
60bcf0fa | 4341 | |
94f592af NC |
4342 | if (fixP->fx_addsy == (symbolS *) NULL) |
4343 | fixP->fx_done = 1; | |
4344 | ||
a161fe53 AM |
4345 | /* We don't actually support subtracting a symbol. */ |
4346 | if (fixP->fx_subsy != (symbolS *) NULL) | |
4347 | as_bad_where (fixP->fx_file, fixP->fx_line, _("Expression too complex.")); | |
60bcf0fa | 4348 | |
60bcf0fa NC |
4349 | /* Patch the instruction with the resolved operand. Elf relocation |
4350 | info will also be generated to take care of linker/loader fixups. | |
4351 | The 68HC11 addresses only 64Kb, we are only concerned by 8 and 16-bit | |
4352 | relocs. BFD_RELOC_8 is basically used for .page0 access (the linker | |
4353 | will warn for overflows). BFD_RELOC_8_PCREL should not be generated | |
4354 | because it's either resolved or turned out into non-relative insns (see | |
4355 | relax table, bcc, bra, bsr transformations) | |
4356 | ||
4357 | The BFD_RELOC_32 is necessary for the support of --gstabs. */ | |
94f592af | 4358 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
60bcf0fa | 4359 | |
94f592af | 4360 | switch (fixP->fx_r_type) |
60bcf0fa NC |
4361 | { |
4362 | case BFD_RELOC_32: | |
4363 | bfd_putb32 ((bfd_vma) value, (unsigned char *) where); | |
4364 | break; | |
4365 | ||
7bfda7eb SC |
4366 | case BFD_RELOC_24: |
4367 | case BFD_RELOC_M68HC11_24: | |
4368 | bfd_putb16 ((bfd_vma) (value & 0x0ffff), (unsigned char *) where); | |
4369 | ((bfd_byte*) where)[2] = ((value >> 16) & 0x0ff); | |
4370 | break; | |
4371 | ||
60bcf0fa NC |
4372 | case BFD_RELOC_16: |
4373 | case BFD_RELOC_16_PCREL: | |
7bfda7eb | 4374 | case BFD_RELOC_M68HC11_LO16: |
60bcf0fa NC |
4375 | bfd_putb16 ((bfd_vma) value, (unsigned char *) where); |
4376 | if (value < -65537 || value > 65535) | |
94f592af | 4377 | as_bad_where (fixP->fx_file, fixP->fx_line, |
60bcf0fa NC |
4378 | _("Value out of 16-bit range.")); |
4379 | break; | |
4380 | ||
4381 | case BFD_RELOC_M68HC11_HI8: | |
6927f982 NC |
4382 | /* Caution, %hi(<symbol>+%ld) will generate incorrect code if %lo |
4383 | causes a carry. */ | |
4384 | case BFD_RELOC_M68HC12_HI8XG: | |
60bcf0fa | 4385 | value = value >> 8; |
fafb6d17 | 4386 | /* Fall through. */ |
60bcf0fa | 4387 | |
6927f982 | 4388 | case BFD_RELOC_M68HC12_LO8XG: |
60bcf0fa NC |
4389 | case BFD_RELOC_M68HC11_LO8: |
4390 | case BFD_RELOC_8: | |
7bfda7eb | 4391 | case BFD_RELOC_M68HC11_PAGE: |
60bcf0fa NC |
4392 | ((bfd_byte *) where)[0] = (bfd_byte) value; |
4393 | break; | |
4394 | ||
4395 | case BFD_RELOC_8_PCREL: | |
60bcf0fa NC |
4396 | ((bfd_byte *) where)[0] = (bfd_byte) value; |
4397 | ||
4398 | if (value < -128 || value > 127) | |
94f592af | 4399 | as_bad_where (fixP->fx_file, fixP->fx_line, |
60bcf0fa NC |
4400 | _("Value %ld too large for 8-bit PC-relative branch."), |
4401 | value); | |
4402 | break; | |
4403 | ||
6927f982 NC |
4404 | /* These next two are for XGATE. */ |
4405 | case BFD_RELOC_M68HC12_9_PCREL: | |
4406 | ((bfd_byte *) where)[0] |= (bfd_byte) ((value >>9) & 0x01); | |
4407 | ((bfd_byte *) where)[1] = (bfd_byte) ((value>>1) & 0xff); | |
4408 | if (value < -512 || value > 511) | |
4409 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4410 | _("Value %ld too large for 9-bit PC-relative branch."), | |
4411 | value); | |
4412 | break; | |
4413 | ||
4414 | case BFD_RELOC_M68HC12_10_PCREL: | |
4415 | ((bfd_byte *) where)[0] |= (bfd_byte) ((value >>9) & 0x03); | |
4416 | ((bfd_byte *) where)[1] = (bfd_byte) ((value>>1) & 0xff); | |
4417 | if (value < -1024 || value > 1023) | |
4418 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4419 | _("Value %ld too large for 10-bit PC-relative branch."), | |
4420 | value); | |
4421 | ||
4422 | break; | |
4423 | ||
60bcf0fa NC |
4424 | case BFD_RELOC_M68HC11_3B: |
4425 | if (value <= 0 || value > 8) | |
94f592af | 4426 | as_bad_where (fixP->fx_file, fixP->fx_line, |
60bcf0fa NC |
4427 | _("Auto increment/decrement offset '%ld' is out of range."), |
4428 | value); | |
4429 | if (where[0] & 0x8) | |
4430 | value = 8 - value; | |
4431 | else | |
4432 | value--; | |
4433 | ||
4434 | where[0] = where[0] | (value & 0x07); | |
4435 | break; | |
4436 | ||
28d39d1a NC |
4437 | case BFD_RELOC_M68HC12_5B: |
4438 | if (value < -16 || value > 15) | |
4439 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4440 | _("Offset out of 5-bit range for movw/movb insn: %ld"), | |
4441 | value); | |
4442 | if (value >= 0) | |
4443 | where[0] |= value; | |
4444 | else | |
4445 | where[0] |= (0x10 | (16 + value)); | |
4446 | break; | |
4447 | ||
6927f982 NC |
4448 | case BFD_RELOC_M68HC12_9B: |
4449 | if (value < -256 || value > 255) | |
4450 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4451 | _("Offset out of 9-bit range for movw/movb insn: %ld"), | |
4452 | value); | |
4453 | /* sign bit already in xb postbyte */ | |
4454 | if (value >= 0) | |
4455 | where[1] = value; | |
4456 | else | |
4457 | where[1] = (256 + value); | |
4458 | break; | |
4459 | ||
4460 | case BFD_RELOC_M68HC12_16B: | |
4461 | if (value < -32768 || value > 32767) | |
4462 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
4463 | _("Offset out of 16-bit range for movw/movb insn: %ld"), | |
4464 | value); | |
4465 | if (value < 0) | |
4466 | value += 65536; | |
4467 | ||
4468 | where[1] = (value >> 8); | |
4469 | where[2] = (value & 0xff); | |
4470 | break; | |
4471 | ||
e371935f SC |
4472 | case BFD_RELOC_M68HC11_RL_JUMP: |
4473 | case BFD_RELOC_M68HC11_RL_GROUP: | |
4474 | case BFD_RELOC_VTABLE_INHERIT: | |
4475 | case BFD_RELOC_VTABLE_ENTRY: | |
4476 | fixP->fx_done = 0; | |
4477 | return; | |
4478 | ||
60bcf0fa NC |
4479 | default: |
4480 | as_fatal (_("Line %d: unknown relocation type: 0x%x."), | |
94f592af | 4481 | fixP->fx_line, fixP->fx_r_type); |
60bcf0fa | 4482 | } |
60bcf0fa | 4483 | } |
eb086b59 SC |
4484 | |
4485 | /* Set the ELF specific flags. */ | |
4486 | void | |
ca43c854 | 4487 | m68hc11_elf_final_processing (void) |
eb086b59 | 4488 | { |
d01030e6 SC |
4489 | if (current_architecture & cpu6812s) |
4490 | elf_flags |= EF_M68HCS12_MACH; | |
eb086b59 SC |
4491 | elf_elfheader (stdoutput)->e_flags &= ~EF_M68HC11_ABI; |
4492 | elf_elfheader (stdoutput)->e_flags |= elf_flags; | |
4493 | } |