Commit | Line | Data |
---|---|---|
60bcf0fa | 1 | /* tc-m68hc11.c -- Assembler code for the Motorola 68HC11 & 68HC12. |
28d39d1a | 2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
7bfda7eb | 3 | Written by Stephane Carrez (stcarrez@nerim.fr) |
60bcf0fa NC |
4 | |
5 | This file is part of GAS, the GNU Assembler. | |
6 | ||
7 | GAS is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GAS is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GAS; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
60bcf0fa | 22 | #include "as.h" |
3882b010 | 23 | #include "safe-ctype.h" |
60bcf0fa NC |
24 | #include "subsegs.h" |
25 | #include "opcode/m68hc11.h" | |
26 | #include "dwarf2dbg.h" | |
7bfda7eb | 27 | #include "elf/m68hc11.h" |
60bcf0fa | 28 | |
60bcf0fa NC |
29 | const char comment_chars[] = ";!"; |
30 | const char line_comment_chars[] = "#*"; | |
31 | const char line_separator_chars[] = ""; | |
32 | ||
33 | const char EXP_CHARS[] = "eE"; | |
34 | const char FLT_CHARS[] = "dD"; | |
35 | ||
36 | #define STATE_CONDITIONAL_BRANCH (1) | |
37 | #define STATE_PC_RELATIVE (2) | |
38 | #define STATE_INDEXED_OFFSET (3) | |
75538612 SC |
39 | #define STATE_INDEXED_PCREL (4) |
40 | #define STATE_XBCC_BRANCH (5) | |
41 | #define STATE_CONDITIONAL_BRANCH_6812 (6) | |
60bcf0fa NC |
42 | |
43 | #define STATE_BYTE (0) | |
44 | #define STATE_BITS5 (0) | |
45 | #define STATE_WORD (1) | |
46 | #define STATE_BITS9 (1) | |
47 | #define STATE_LONG (2) | |
48 | #define STATE_BITS16 (2) | |
49 | #define STATE_UNDF (3) /* Symbol undefined in pass1 */ | |
50 | ||
51 | /* This macro has no side-effects. */ | |
52 | #define ENCODE_RELAX(what,length) (((what) << 2) + (length)) | |
606ab118 AM |
53 | #define RELAX_STATE(s) ((s) >> 2) |
54 | #define RELAX_LENGTH(s) ((s) & 3) | |
60bcf0fa NC |
55 | |
56 | #define IS_OPCODE(C1,C2) (((C1) & 0x0FF) == ((C2) & 0x0FF)) | |
57 | ||
58 | /* This table describes how you change sizes for the various types of variable | |
59 | size expressions. This version only supports two kinds. */ | |
60 | ||
61 | /* The fields are: | |
fafb6d17 NC |
62 | How far Forward this mode will reach. |
63 | How far Backward this mode will reach. | |
64 | How many bytes this mode will add to the size of the frag. | |
65 | Which mode to go to if the offset won't fit in this one. */ | |
66 | ||
098f2ec3 | 67 | relax_typeS md_relax_table[] = { |
fafb6d17 NC |
68 | {1, 1, 0, 0}, /* First entries aren't used. */ |
69 | {1, 1, 0, 0}, /* For no good reason except. */ | |
70 | {1, 1, 0, 0}, /* that the VAX doesn't either. */ | |
60bcf0fa NC |
71 | {1, 1, 0, 0}, |
72 | ||
73 | /* Relax for bcc <L>. | |
74 | These insns are translated into b!cc +3 jmp L. */ | |
75 | {(127), (-128), 0, ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_WORD)}, | |
76 | {0, 0, 3, 0}, | |
77 | {1, 1, 0, 0}, | |
78 | {1, 1, 0, 0}, | |
79 | ||
80 | /* Relax for bsr <L> and bra <L>. | |
81 | These insns are translated into jsr and jmp. */ | |
82 | {(127), (-128), 0, ENCODE_RELAX (STATE_PC_RELATIVE, STATE_WORD)}, | |
83 | {0, 0, 1, 0}, | |
84 | {1, 1, 0, 0}, | |
85 | {1, 1, 0, 0}, | |
86 | ||
87 | /* Relax for indexed offset: 5-bits, 9-bits, 16-bits. */ | |
88 | {(15), (-16), 0, ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS9)}, | |
89 | {(255), (-256), 1, ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS16)}, | |
88051039 | 90 | {0, 0, 2, 0}, |
60bcf0fa NC |
91 | {1, 1, 0, 0}, |
92 | ||
75538612 SC |
93 | /* Relax for PC relative offset: 5-bits, 9-bits, 16-bits. |
94 | For the 9-bit case, there will be a -1 correction to take into | |
95 | account the new byte that's why the range is -255..256. */ | |
96 | {(15), (-16), 0, ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS9)}, | |
97 | {(256), (-255), 1, ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS16)}, | |
98 | {0, 0, 2, 0}, | |
99 | {1, 1, 0, 0}, | |
100 | ||
60bcf0fa NC |
101 | /* Relax for dbeq/ibeq/tbeq r,<L>: |
102 | These insns are translated into db!cc +3 jmp L. */ | |
103 | {(255), (-256), 0, ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_WORD)}, | |
104 | {0, 0, 3, 0}, | |
105 | {1, 1, 0, 0}, | |
106 | {1, 1, 0, 0}, | |
107 | ||
108 | /* Relax for bcc <L> on 68HC12. | |
109 | These insns are translated into lbcc <L>. */ | |
110 | {(127), (-128), 0, ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_WORD)}, | |
111 | {0, 0, 2, 0}, | |
112 | {1, 1, 0, 0}, | |
113 | {1, 1, 0, 0}, | |
114 | ||
115 | }; | |
116 | ||
117 | /* 68HC11 and 68HC12 registers. They are numbered according to the 68HC12. */ | |
098f2ec3 | 118 | typedef enum register_id { |
60bcf0fa NC |
119 | REG_NONE = -1, |
120 | REG_A = 0, | |
121 | REG_B = 1, | |
122 | REG_CCR = 2, | |
123 | REG_D = 4, | |
124 | REG_X = 5, | |
125 | REG_Y = 6, | |
126 | REG_SP = 7, | |
127 | REG_PC = 8 | |
128 | } register_id; | |
129 | ||
098f2ec3 | 130 | typedef struct operand { |
60bcf0fa NC |
131 | expressionS exp; |
132 | register_id reg1; | |
133 | register_id reg2; | |
134 | int mode; | |
135 | } operand; | |
136 | ||
098f2ec3 | 137 | struct m68hc11_opcode_def { |
60bcf0fa NC |
138 | long format; |
139 | int min_operands; | |
140 | int max_operands; | |
141 | int nb_modes; | |
142 | int used; | |
143 | struct m68hc11_opcode *opcode; | |
144 | }; | |
145 | ||
146 | static struct m68hc11_opcode_def *m68hc11_opcode_defs = 0; | |
147 | static int m68hc11_nb_opcode_defs = 0; | |
148 | ||
098f2ec3 | 149 | typedef struct alias { |
60bcf0fa NC |
150 | const char *name; |
151 | const char *alias; | |
098f2ec3 | 152 | } alias; |
60bcf0fa | 153 | |
098f2ec3 | 154 | static alias alias_opcodes[] = { |
60bcf0fa NC |
155 | {"cpd", "cmpd"}, |
156 | {"cpx", "cmpx"}, | |
157 | {"cpy", "cmpy"}, | |
158 | {0, 0} | |
159 | }; | |
160 | ||
fafb6d17 | 161 | /* Local functions. */ |
ca43c854 SC |
162 | static register_id reg_name_search (char *); |
163 | static register_id register_name (void); | |
164 | static int cmp_opcode (struct m68hc11_opcode *, struct m68hc11_opcode *); | |
165 | static char *print_opcode_format (struct m68hc11_opcode *, int); | |
166 | static char *skip_whites (char *); | |
167 | static int check_range (long, int); | |
168 | static void print_opcode_list (void); | |
169 | static void get_default_target (void); | |
170 | static void print_insn_format (char *); | |
171 | static int get_operand (operand *, int, long); | |
172 | static void fixup8 (expressionS *, int, int); | |
173 | static void fixup16 (expressionS *, int, int); | |
174 | static void fixup24 (expressionS *, int, int); | |
175 | static unsigned char convert_branch (unsigned char); | |
176 | static char *m68hc11_new_insn (int); | |
177 | static void build_dbranch_insn (struct m68hc11_opcode *, | |
178 | operand *, int, int); | |
179 | static int build_indexed_byte (operand *, int, int); | |
180 | static int build_reg_mode (operand *, int); | |
181 | ||
182 | static struct m68hc11_opcode *find (struct m68hc11_opcode_def *, | |
183 | operand *, int); | |
184 | static struct m68hc11_opcode *find_opcode (struct m68hc11_opcode_def *, | |
185 | operand *, int *); | |
186 | static void build_jump_insn (struct m68hc11_opcode *, operand *, int, int); | |
187 | static void build_insn (struct m68hc11_opcode *, operand *, int); | |
188 | static int relaxable_symbol (symbolS *); | |
60bcf0fa | 189 | |
e371935f | 190 | /* Pseudo op to indicate a relax group. */ |
ca43c854 | 191 | static void s_m68hc11_relax (int); |
e371935f | 192 | |
eb086b59 | 193 | /* Pseudo op to control the ELF flags. */ |
ca43c854 | 194 | static void s_m68hc11_mode (int); |
eb086b59 SC |
195 | |
196 | /* Mark the symbols with STO_M68HC12_FAR to indicate the functions | |
197 | are using 'rtc' for returning. It is necessary to use 'call' | |
198 | to invoke them. This is also used by the debugger to correctly | |
199 | find the stack frame. */ | |
ca43c854 | 200 | static void s_m68hc11_mark_symbol (int); |
eb086b59 | 201 | |
60bcf0fa NC |
202 | /* Controls whether relative branches can be turned into long branches. |
203 | When the relative offset is too large, the insn are changed: | |
204 | bra -> jmp | |
205 | bsr -> jsr | |
206 | bcc -> b!cc +3 | |
207 | jmp L | |
208 | dbcc -> db!cc +3 | |
209 | jmp L | |
fafb6d17 | 210 | |
60bcf0fa NC |
211 | Setting the flag forbidds this. */ |
212 | static short flag_fixed_branchs = 0; | |
213 | ||
214 | /* Force to use long jumps (absolute) instead of relative branches. */ | |
215 | static short flag_force_long_jumps = 0; | |
216 | ||
217 | /* Change the direct addressing mode into an absolute addressing mode | |
218 | when the insn does not support direct addressing. | |
219 | For example, "clr *ZD0" is normally not possible and is changed | |
220 | into "clr ZDO". */ | |
221 | static short flag_strict_direct_addressing = 1; | |
222 | ||
223 | /* When an opcode has invalid operand, print out the syntax of the opcode | |
224 | to stderr. */ | |
225 | static short flag_print_insn_syntax = 0; | |
226 | ||
227 | /* Dumps the list of instructions with syntax and then exit: | |
228 | 1 -> Only dumps the list (sorted by name) | |
229 | 2 -> Generate an example (or test) that can be compiled. */ | |
230 | static short flag_print_opcodes = 0; | |
231 | ||
232 | /* Opcode hash table. */ | |
233 | static struct hash_control *m68hc11_hash; | |
234 | ||
235 | /* Current cpu (either cpu6811 or cpu6812). This is determined automagically | |
67c1ffbe | 236 | by 'get_default_target' by looking at default BFD vector. This is overridden |
60bcf0fa NC |
237 | with the -m<cpu> option. */ |
238 | static int current_architecture = 0; | |
239 | ||
240 | /* Default cpu determined by 'get_default_target'. */ | |
241 | static const char *default_cpu; | |
242 | ||
243 | /* Number of opcodes in the sorted table (filtered by current cpu). */ | |
244 | static int num_opcodes; | |
245 | ||
246 | /* The opcodes sorted by name and filtered by current cpu. */ | |
247 | static struct m68hc11_opcode *m68hc11_sorted_opcodes; | |
248 | ||
eb086b59 | 249 | /* ELF flags to set in the output file header. */ |
2f904664 | 250 | static int elf_flags = E_M68HC11_F64; |
eb086b59 | 251 | |
60bcf0fa NC |
252 | /* These are the machine dependent pseudo-ops. These are included so |
253 | the assembler can work on the output from the SUN C compiler, which | |
254 | generates these. */ | |
255 | ||
256 | /* This table describes all the machine specific pseudo-ops the assembler | |
257 | has to support. The fields are: | |
258 | pseudo-op name without dot | |
259 | function to call to execute this pseudo-op | |
260 | Integer arg to pass to the function. */ | |
098f2ec3 | 261 | const pseudo_typeS md_pseudo_table[] = { |
60bcf0fa NC |
262 | /* The following pseudo-ops are supported for MRI compatibility. */ |
263 | {"fcb", cons, 1}, | |
264 | {"fdb", cons, 2}, | |
265 | {"fcc", stringer, 1}, | |
266 | {"rmb", s_space, 0}, | |
986c6f4b | 267 | |
e629c13f SC |
268 | /* Motorola ALIS. */ |
269 | {"xrefb", s_ignore, 0}, /* Same as xref */ | |
270 | ||
e371935f SC |
271 | /* Gcc driven relaxation. */ |
272 | {"relax", s_m68hc11_relax, 0}, | |
273 | ||
eb086b59 SC |
274 | /* .mode instruction (ala SH). */ |
275 | {"mode", s_m68hc11_mode, 0}, | |
276 | ||
277 | /* .far instruction. */ | |
278 | {"far", s_m68hc11_mark_symbol, STO_M68HC12_FAR}, | |
279 | ||
280 | /* .interrupt instruction. */ | |
281 | {"interrupt", s_m68hc11_mark_symbol, STO_M68HC12_INTERRUPT}, | |
282 | ||
60bcf0fa NC |
283 | {0, 0, 0} |
284 | }; | |
60bcf0fa NC |
285 | \f |
286 | /* Options and initialization. */ | |
287 | ||
5a38dc70 | 288 | const char *md_shortopts = "Sm:"; |
60bcf0fa | 289 | |
098f2ec3 | 290 | struct option md_longopts[] = { |
60bcf0fa NC |
291 | #define OPTION_FORCE_LONG_BRANCH (OPTION_MD_BASE) |
292 | {"force-long-branchs", no_argument, NULL, OPTION_FORCE_LONG_BRANCH}, | |
293 | ||
294 | #define OPTION_SHORT_BRANCHS (OPTION_MD_BASE + 1) | |
295 | {"short-branchs", no_argument, NULL, OPTION_SHORT_BRANCHS}, | |
296 | ||
297 | #define OPTION_STRICT_DIRECT_MODE (OPTION_MD_BASE + 2) | |
298 | {"strict-direct-mode", no_argument, NULL, OPTION_STRICT_DIRECT_MODE}, | |
299 | ||
300 | #define OPTION_PRINT_INSN_SYNTAX (OPTION_MD_BASE + 3) | |
301 | {"print-insn-syntax", no_argument, NULL, OPTION_PRINT_INSN_SYNTAX}, | |
302 | ||
303 | #define OPTION_PRINT_OPCODES (OPTION_MD_BASE + 4) | |
304 | {"print-opcodes", no_argument, NULL, OPTION_PRINT_OPCODES}, | |
305 | ||
306 | #define OPTION_GENERATE_EXAMPLE (OPTION_MD_BASE + 5) | |
307 | {"generate-example", no_argument, NULL, OPTION_GENERATE_EXAMPLE}, | |
308 | ||
2f904664 SC |
309 | #define OPTION_MSHORT (OPTION_MD_BASE + 6) |
310 | {"mshort", no_argument, NULL, OPTION_MSHORT}, | |
311 | ||
312 | #define OPTION_MLONG (OPTION_MD_BASE + 7) | |
313 | {"mlong", no_argument, NULL, OPTION_MLONG}, | |
314 | ||
315 | #define OPTION_MSHORT_DOUBLE (OPTION_MD_BASE + 8) | |
316 | {"mshort-double", no_argument, NULL, OPTION_MSHORT_DOUBLE}, | |
317 | ||
318 | #define OPTION_MLONG_DOUBLE (OPTION_MD_BASE + 9) | |
319 | {"mlong-double", no_argument, NULL, OPTION_MLONG_DOUBLE}, | |
320 | ||
60bcf0fa NC |
321 | {NULL, no_argument, NULL, 0} |
322 | }; | |
323 | size_t md_longopts_size = sizeof (md_longopts); | |
324 | ||
325 | /* Get the target cpu for the assembler. This is based on the configure | |
326 | options and on the -m68hc11/-m68hc12 option. If no option is specified, | |
327 | we must get the default. */ | |
328 | const char * | |
ca43c854 | 329 | m68hc11_arch_format (void) |
60bcf0fa NC |
330 | { |
331 | get_default_target (); | |
332 | if (current_architecture & cpu6811) | |
333 | return "elf32-m68hc11"; | |
334 | else | |
335 | return "elf32-m68hc12"; | |
336 | } | |
337 | ||
338 | enum bfd_architecture | |
ca43c854 | 339 | m68hc11_arch (void) |
60bcf0fa NC |
340 | { |
341 | get_default_target (); | |
342 | if (current_architecture & cpu6811) | |
343 | return bfd_arch_m68hc11; | |
344 | else | |
345 | return bfd_arch_m68hc12; | |
346 | } | |
347 | ||
348 | int | |
ca43c854 | 349 | m68hc11_mach (void) |
60bcf0fa NC |
350 | { |
351 | return 0; | |
352 | } | |
353 | ||
986c6f4b SC |
354 | /* Listing header selected according to cpu. */ |
355 | const char * | |
ca43c854 | 356 | m68hc11_listing_header (void) |
986c6f4b SC |
357 | { |
358 | if (current_architecture & cpu6811) | |
359 | return "M68HC11 GAS "; | |
360 | else | |
361 | return "M68HC12 GAS "; | |
362 | } | |
363 | ||
60bcf0fa | 364 | void |
ca43c854 | 365 | md_show_usage (FILE *stream) |
60bcf0fa NC |
366 | { |
367 | get_default_target (); | |
368 | fprintf (stream, _("\ | |
d01030e6 | 369 | Motorola 68HC11/68HC12/68HCS12 options:\n\ |
f0abc2a1 | 370 | -m68hc11 | -m68hc12 |\n\ |
d01030e6 | 371 | -m68hcs12 specify the processor [default %s]\n\ |
2f904664 SC |
372 | -mshort use 16-bit int ABI (default)\n\ |
373 | -mlong use 32-bit int ABI\n\ | |
374 | -mshort-double use 32-bit double ABI\n\ | |
375 | -mlong-double use 64-bit double ABI (default)\n\ | |
60bcf0fa NC |
376 | --force-long-branchs always turn relative branchs into absolute ones\n\ |
377 | -S,--short-branchs do not turn relative branchs into absolute ones\n\ | |
378 | when the offset is out of range\n\ | |
379 | --strict-direct-mode do not turn the direct mode into extended mode\n\ | |
380 | when the instruction does not support direct mode\n\ | |
381 | --print-insn-syntax print the syntax of instruction in case of error\n\ | |
382 | --print-opcodes print the list of instructions with syntax\n\ | |
383 | --generate-example generate an example of each instruction\n\ | |
384 | (used for testing)\n"), default_cpu); | |
385 | ||
386 | } | |
387 | ||
388 | /* Try to identify the default target based on the BFD library. */ | |
389 | static void | |
ca43c854 | 390 | get_default_target (void) |
60bcf0fa NC |
391 | { |
392 | const bfd_target *target; | |
393 | bfd abfd; | |
394 | ||
395 | if (current_architecture != 0) | |
396 | return; | |
397 | ||
398 | default_cpu = "unknown"; | |
399 | target = bfd_find_target (0, &abfd); | |
400 | if (target && target->name) | |
401 | { | |
402 | if (strcmp (target->name, "elf32-m68hc12") == 0) | |
403 | { | |
404 | current_architecture = cpu6812; | |
405 | default_cpu = "m68hc12"; | |
406 | } | |
407 | else if (strcmp (target->name, "elf32-m68hc11") == 0) | |
408 | { | |
409 | current_architecture = cpu6811; | |
410 | default_cpu = "m68hc11"; | |
411 | } | |
412 | else | |
413 | { | |
414 | as_bad (_("Default target `%s' is not supported."), target->name); | |
415 | } | |
416 | } | |
417 | } | |
418 | ||
419 | void | |
ca43c854 | 420 | m68hc11_print_statistics (FILE *file) |
60bcf0fa NC |
421 | { |
422 | int i; | |
423 | struct m68hc11_opcode_def *opc; | |
424 | ||
425 | hash_print_statistics (file, "opcode table", m68hc11_hash); | |
426 | ||
427 | opc = m68hc11_opcode_defs; | |
428 | if (opc == 0 || m68hc11_nb_opcode_defs == 0) | |
429 | return; | |
430 | ||
431 | /* Dump the opcode statistics table. */ | |
432 | fprintf (file, _("Name # Modes Min ops Max ops Modes mask # Used\n")); | |
433 | for (i = 0; i < m68hc11_nb_opcode_defs; i++, opc++) | |
434 | { | |
435 | fprintf (file, "%-7.7s %5d %7d %7d 0x%08lx %7d\n", | |
436 | opc->opcode->name, | |
437 | opc->nb_modes, | |
438 | opc->min_operands, opc->max_operands, opc->format, opc->used); | |
439 | } | |
440 | } | |
441 | ||
442 | int | |
ca43c854 | 443 | md_parse_option (int c, char *arg) |
60bcf0fa NC |
444 | { |
445 | get_default_target (); | |
446 | switch (c) | |
447 | { | |
986c6f4b | 448 | /* -S means keep external to 2 bit offset rather than 16 bit one. */ |
60bcf0fa NC |
449 | case OPTION_SHORT_BRANCHS: |
450 | case 'S': | |
451 | flag_fixed_branchs = 1; | |
452 | break; | |
453 | ||
454 | case OPTION_FORCE_LONG_BRANCH: | |
455 | flag_force_long_jumps = 1; | |
456 | break; | |
457 | ||
458 | case OPTION_PRINT_INSN_SYNTAX: | |
459 | flag_print_insn_syntax = 1; | |
460 | break; | |
461 | ||
462 | case OPTION_PRINT_OPCODES: | |
463 | flag_print_opcodes = 1; | |
464 | break; | |
465 | ||
466 | case OPTION_STRICT_DIRECT_MODE: | |
467 | flag_strict_direct_addressing = 0; | |
468 | break; | |
469 | ||
470 | case OPTION_GENERATE_EXAMPLE: | |
471 | flag_print_opcodes = 2; | |
472 | break; | |
473 | ||
2f904664 SC |
474 | case OPTION_MSHORT: |
475 | elf_flags &= ~E_M68HC11_I32; | |
476 | break; | |
477 | ||
478 | case OPTION_MLONG: | |
479 | elf_flags |= E_M68HC11_I32; | |
480 | break; | |
481 | ||
482 | case OPTION_MSHORT_DOUBLE: | |
483 | elf_flags &= ~E_M68HC11_F64; | |
484 | break; | |
485 | ||
486 | case OPTION_MLONG_DOUBLE: | |
487 | elf_flags |= E_M68HC11_F64; | |
488 | break; | |
489 | ||
60bcf0fa NC |
490 | case 'm': |
491 | if (strcasecmp (arg, "68hc11") == 0) | |
492 | current_architecture = cpu6811; | |
493 | else if (strcasecmp (arg, "68hc12") == 0) | |
494 | current_architecture = cpu6812; | |
d01030e6 SC |
495 | else if (strcasecmp (arg, "68hcs12") == 0) |
496 | current_architecture = cpu6812 | cpu6812s; | |
60bcf0fa NC |
497 | else |
498 | as_bad (_("Option `%s' is not recognized."), arg); | |
499 | break; | |
500 | ||
501 | default: | |
502 | return 0; | |
503 | } | |
504 | ||
505 | return 1; | |
506 | } | |
507 | \f | |
508 | symbolS * | |
ca43c854 | 509 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
60bcf0fa NC |
510 | { |
511 | return 0; | |
512 | } | |
513 | ||
fafb6d17 | 514 | /* Equal to MAX_PRECISION in atof-ieee.c. */ |
60bcf0fa NC |
515 | #define MAX_LITTLENUMS 6 |
516 | ||
517 | /* Turn a string in input_line_pointer into a floating point constant | |
bc0d738a NC |
518 | of type TYPE, and store the appropriate bytes in *LITP. The number |
519 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
60bcf0fa | 520 | returned, or NULL on OK. */ |
60bcf0fa | 521 | char * |
ca43c854 | 522 | md_atof (int type, char *litP, int *sizeP) |
60bcf0fa NC |
523 | { |
524 | int prec; | |
525 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
526 | LITTLENUM_TYPE *wordP; | |
527 | char *t; | |
528 | ||
529 | switch (type) | |
530 | { | |
531 | case 'f': | |
532 | case 'F': | |
533 | case 's': | |
534 | case 'S': | |
535 | prec = 2; | |
536 | break; | |
537 | ||
538 | case 'd': | |
539 | case 'D': | |
540 | case 'r': | |
541 | case 'R': | |
542 | prec = 4; | |
543 | break; | |
544 | ||
545 | case 'x': | |
546 | case 'X': | |
547 | prec = 6; | |
548 | break; | |
549 | ||
550 | case 'p': | |
551 | case 'P': | |
552 | prec = 6; | |
553 | break; | |
554 | ||
555 | default: | |
556 | *sizeP = 0; | |
557 | return _("Bad call to MD_ATOF()"); | |
558 | } | |
559 | t = atof_ieee (input_line_pointer, type, words); | |
560 | if (t) | |
561 | input_line_pointer = t; | |
562 | ||
563 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
564 | for (wordP = words; prec--;) | |
565 | { | |
566 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
567 | litP += sizeof (LITTLENUM_TYPE); | |
568 | } | |
569 | return 0; | |
570 | } | |
571 | ||
572 | valueT | |
ca43c854 | 573 | md_section_align (asection *seg, valueT addr) |
60bcf0fa NC |
574 | { |
575 | int align = bfd_get_section_alignment (stdoutput, seg); | |
576 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
577 | } | |
578 | ||
60bcf0fa | 579 | static int |
ca43c854 | 580 | cmp_opcode (struct m68hc11_opcode *op1, struct m68hc11_opcode *op2) |
60bcf0fa NC |
581 | { |
582 | return strcmp (op1->name, op2->name); | |
583 | } | |
584 | ||
7bfda7eb SC |
585 | #define IS_CALL_SYMBOL(MODE) \ |
586 | (((MODE) & (M6812_OP_PAGE|M6811_OP_IND16)) \ | |
587 | == ((M6812_OP_PAGE|M6811_OP_IND16))) | |
588 | ||
60bcf0fa NC |
589 | /* Initialize the assembler. Create the opcode hash table |
590 | (sorted on the names) with the M6811 opcode table | |
591 | (from opcode library). */ | |
592 | void | |
ca43c854 | 593 | md_begin (void) |
60bcf0fa NC |
594 | { |
595 | char *prev_name = ""; | |
596 | struct m68hc11_opcode *opcodes; | |
597 | struct m68hc11_opcode_def *opc = 0; | |
598 | int i, j; | |
599 | ||
600 | get_default_target (); | |
601 | ||
602 | m68hc11_hash = hash_new (); | |
603 | ||
604 | /* Get a writable copy of the opcode table and sort it on the names. */ | |
605 | opcodes = (struct m68hc11_opcode *) xmalloc (m68hc11_num_opcodes * | |
606 | sizeof (struct | |
607 | m68hc11_opcode)); | |
608 | m68hc11_sorted_opcodes = opcodes; | |
609 | num_opcodes = 0; | |
610 | for (i = 0; i < m68hc11_num_opcodes; i++) | |
611 | { | |
612 | if (m68hc11_opcodes[i].arch & current_architecture) | |
613 | { | |
614 | opcodes[num_opcodes] = m68hc11_opcodes[i]; | |
615 | if (opcodes[num_opcodes].name[0] == 'b' | |
616 | && opcodes[num_opcodes].format & M6811_OP_JUMP_REL | |
617 | && !(opcodes[num_opcodes].format & M6811_OP_BITMASK)) | |
618 | { | |
619 | num_opcodes++; | |
620 | opcodes[num_opcodes] = m68hc11_opcodes[i]; | |
621 | } | |
622 | num_opcodes++; | |
623 | for (j = 0; alias_opcodes[j].name != 0; j++) | |
624 | if (strcmp (m68hc11_opcodes[i].name, alias_opcodes[j].name) == 0) | |
625 | { | |
626 | opcodes[num_opcodes] = m68hc11_opcodes[i]; | |
627 | opcodes[num_opcodes].name = alias_opcodes[j].alias; | |
628 | num_opcodes++; | |
629 | break; | |
630 | } | |
631 | } | |
632 | } | |
1910266d | 633 | qsort (opcodes, num_opcodes, sizeof (struct m68hc11_opcode), |
ca43c854 | 634 | (int (*) (const void*, const void*)) cmp_opcode); |
60bcf0fa NC |
635 | |
636 | opc = (struct m68hc11_opcode_def *) | |
637 | xmalloc (num_opcodes * sizeof (struct m68hc11_opcode_def)); | |
638 | m68hc11_opcode_defs = opc--; | |
639 | ||
640 | /* Insert unique names into hash table. The M6811 instruction set | |
641 | has several identical opcode names that have different opcodes based | |
642 | on the operands. This hash table then provides a quick index to | |
643 | the first opcode with a particular name in the opcode table. */ | |
644 | for (i = 0; i < num_opcodes; i++, opcodes++) | |
645 | { | |
646 | int expect; | |
647 | ||
648 | if (strcmp (prev_name, opcodes->name)) | |
649 | { | |
650 | prev_name = (char *) opcodes->name; | |
651 | ||
652 | opc++; | |
653 | opc->format = 0; | |
654 | opc->min_operands = 100; | |
655 | opc->max_operands = 0; | |
656 | opc->nb_modes = 0; | |
657 | opc->opcode = opcodes; | |
658 | opc->used = 0; | |
ca43c854 | 659 | hash_insert (m68hc11_hash, opcodes->name, opc); |
60bcf0fa NC |
660 | } |
661 | opc->nb_modes++; | |
662 | opc->format |= opcodes->format; | |
663 | ||
664 | /* See how many operands this opcode needs. */ | |
665 | expect = 0; | |
666 | if (opcodes->format & M6811_OP_MASK) | |
667 | expect++; | |
668 | if (opcodes->format & M6811_OP_BITMASK) | |
669 | expect++; | |
670 | if (opcodes->format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
671 | expect++; | |
672 | if (opcodes->format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2)) | |
673 | expect++; | |
7bfda7eb SC |
674 | /* Special case for call instruction. */ |
675 | if ((opcodes->format & M6812_OP_PAGE) | |
676 | && !(opcodes->format & M6811_OP_IND16)) | |
677 | expect++; | |
60bcf0fa NC |
678 | |
679 | if (expect < opc->min_operands) | |
680 | opc->min_operands = expect; | |
7bfda7eb SC |
681 | if (IS_CALL_SYMBOL (opcodes->format)) |
682 | expect++; | |
60bcf0fa NC |
683 | if (expect > opc->max_operands) |
684 | opc->max_operands = expect; | |
685 | } | |
686 | opc++; | |
687 | m68hc11_nb_opcode_defs = opc - m68hc11_opcode_defs; | |
688 | ||
689 | if (flag_print_opcodes) | |
690 | { | |
691 | print_opcode_list (); | |
692 | exit (EXIT_SUCCESS); | |
693 | } | |
694 | } | |
695 | ||
696 | void | |
ca43c854 | 697 | m68hc11_init_after_args (void) |
60bcf0fa NC |
698 | { |
699 | } | |
60bcf0fa NC |
700 | \f |
701 | /* Builtin help. */ | |
702 | ||
703 | /* Return a string that represents the operand format for the instruction. | |
704 | When example is true, this generates an example of operand. This is used | |
705 | to give an example and also to generate a test. */ | |
706 | static char * | |
ca43c854 | 707 | print_opcode_format (struct m68hc11_opcode *opcode, int example) |
60bcf0fa NC |
708 | { |
709 | static char buf[128]; | |
710 | int format = opcode->format; | |
711 | char *p; | |
712 | ||
713 | p = buf; | |
714 | buf[0] = 0; | |
715 | if (format & M6811_OP_IMM8) | |
716 | { | |
717 | if (example) | |
718 | sprintf (p, "#%d", rand () & 0x0FF); | |
719 | else | |
720 | strcpy (p, _("#<imm8>")); | |
721 | p = &p[strlen (p)]; | |
722 | } | |
723 | ||
724 | if (format & M6811_OP_IMM16) | |
725 | { | |
726 | if (example) | |
727 | sprintf (p, "#%d", rand () & 0x0FFFF); | |
728 | else | |
729 | strcpy (p, _("#<imm16>")); | |
730 | p = &p[strlen (p)]; | |
731 | } | |
732 | ||
733 | if (format & M6811_OP_IX) | |
734 | { | |
735 | if (example) | |
736 | sprintf (p, "%d,X", rand () & 0x0FF); | |
737 | else | |
738 | strcpy (p, _("<imm8>,X")); | |
739 | p = &p[strlen (p)]; | |
740 | } | |
741 | ||
742 | if (format & M6811_OP_IY) | |
743 | { | |
744 | if (example) | |
745 | sprintf (p, "%d,X", rand () & 0x0FF); | |
746 | else | |
747 | strcpy (p, _("<imm8>,X")); | |
748 | p = &p[strlen (p)]; | |
749 | } | |
750 | ||
751 | if (format & M6812_OP_IDX) | |
752 | { | |
753 | if (example) | |
754 | sprintf (p, "%d,X", rand () & 0x0FF); | |
755 | else | |
756 | strcpy (p, "n,r"); | |
757 | p = &p[strlen (p)]; | |
758 | } | |
759 | ||
7bfda7eb SC |
760 | if (format & M6812_OP_PAGE) |
761 | { | |
762 | if (example) | |
763 | sprintf (p, ", %d", rand () & 0x0FF); | |
764 | else | |
765 | strcpy (p, ", <page>"); | |
766 | p = &p[strlen (p)]; | |
767 | } | |
768 | ||
60bcf0fa NC |
769 | if (format & M6811_OP_DIRECT) |
770 | { | |
771 | if (example) | |
772 | sprintf (p, "*Z%d", rand () & 0x0FF); | |
773 | else | |
774 | strcpy (p, _("*<abs8>")); | |
775 | p = &p[strlen (p)]; | |
776 | } | |
777 | ||
778 | if (format & M6811_OP_BITMASK) | |
779 | { | |
780 | if (buf[0]) | |
781 | *p++ = ' '; | |
782 | ||
783 | if (example) | |
784 | sprintf (p, "#$%02x", rand () & 0x0FF); | |
785 | else | |
786 | strcpy (p, _("#<mask>")); | |
787 | ||
788 | p = &p[strlen (p)]; | |
789 | if (format & M6811_OP_JUMP_REL) | |
790 | *p++ = ' '; | |
791 | } | |
792 | ||
793 | if (format & M6811_OP_IND16) | |
794 | { | |
795 | if (example) | |
796 | sprintf (p, _("symbol%d"), rand () & 0x0FF); | |
797 | else | |
798 | strcpy (p, _("<abs>")); | |
799 | ||
800 | p = &p[strlen (p)]; | |
801 | } | |
802 | ||
803 | if (format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
804 | { | |
805 | if (example) | |
806 | { | |
807 | if (format & M6811_OP_BITMASK) | |
808 | { | |
809 | sprintf (p, ".+%d", rand () & 0x7F); | |
810 | } | |
811 | else | |
812 | { | |
813 | sprintf (p, "L%d", rand () & 0x0FF); | |
814 | } | |
815 | } | |
816 | else | |
817 | strcpy (p, _("<label>")); | |
818 | } | |
819 | ||
820 | return buf; | |
821 | } | |
822 | ||
823 | /* Prints the list of instructions with the possible operands. */ | |
824 | static void | |
ca43c854 | 825 | print_opcode_list (void) |
60bcf0fa NC |
826 | { |
827 | int i; | |
828 | char *prev_name = ""; | |
829 | struct m68hc11_opcode *opcodes; | |
830 | int example = flag_print_opcodes == 2; | |
831 | ||
832 | if (example) | |
fafb6d17 NC |
833 | printf (_("# Example of `%s' instructions\n\t.sect .text\n_start:\n"), |
834 | default_cpu); | |
60bcf0fa NC |
835 | |
836 | opcodes = m68hc11_sorted_opcodes; | |
837 | ||
838 | /* Walk the list sorted on names (by md_begin). We only report | |
839 | one instruction per line, and we collect the different operand | |
840 | formats. */ | |
841 | for (i = 0; i < num_opcodes; i++, opcodes++) | |
842 | { | |
843 | char *fmt = print_opcode_format (opcodes, example); | |
844 | ||
845 | if (example) | |
846 | { | |
847 | printf ("L%d:\t", i); | |
848 | printf ("%s %s\n", opcodes->name, fmt); | |
849 | } | |
850 | else | |
851 | { | |
852 | if (strcmp (prev_name, opcodes->name)) | |
853 | { | |
854 | if (i > 0) | |
855 | printf ("\n"); | |
856 | ||
857 | printf ("%-5.5s ", opcodes->name); | |
858 | prev_name = (char *) opcodes->name; | |
859 | } | |
860 | if (fmt[0]) | |
861 | printf (" [%s]", fmt); | |
862 | } | |
863 | } | |
864 | printf ("\n"); | |
865 | } | |
866 | ||
60bcf0fa NC |
867 | /* Print the instruction format. This operation is called when some |
868 | instruction is not correct. Instruction format is printed as an | |
869 | error message. */ | |
870 | static void | |
ca43c854 | 871 | print_insn_format (char *name) |
60bcf0fa NC |
872 | { |
873 | struct m68hc11_opcode_def *opc; | |
874 | struct m68hc11_opcode *opcode; | |
875 | char buf[128]; | |
876 | ||
877 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, name); | |
878 | if (opc == NULL) | |
879 | { | |
880 | as_bad (_("Instruction `%s' is not recognized."), name); | |
881 | return; | |
882 | } | |
883 | opcode = opc->opcode; | |
884 | ||
885 | as_bad (_("Instruction formats for `%s':"), name); | |
886 | do | |
887 | { | |
888 | char *fmt; | |
889 | ||
27302d63 | 890 | fmt = print_opcode_format (opcode, 0); |
60bcf0fa NC |
891 | sprintf (buf, "\t%-5.5s %s", opcode->name, fmt); |
892 | ||
893 | as_bad ("%s", buf); | |
894 | opcode++; | |
895 | } | |
896 | while (strcmp (opcode->name, name) == 0); | |
897 | } | |
60bcf0fa NC |
898 | \f |
899 | /* Analysis of 68HC11 and 68HC12 operands. */ | |
900 | ||
901 | /* reg_name_search() finds the register number given its name. | |
902 | Returns the register number or REG_NONE on failure. */ | |
903 | static register_id | |
ca43c854 | 904 | reg_name_search (char *name) |
60bcf0fa NC |
905 | { |
906 | if (strcasecmp (name, "x") == 0 || strcasecmp (name, "ix") == 0) | |
907 | return REG_X; | |
908 | if (strcasecmp (name, "y") == 0 || strcasecmp (name, "iy") == 0) | |
909 | return REG_Y; | |
910 | if (strcasecmp (name, "a") == 0) | |
911 | return REG_A; | |
912 | if (strcasecmp (name, "b") == 0) | |
913 | return REG_B; | |
914 | if (strcasecmp (name, "d") == 0) | |
915 | return REG_D; | |
916 | if (strcasecmp (name, "sp") == 0) | |
917 | return REG_SP; | |
918 | if (strcasecmp (name, "pc") == 0) | |
919 | return REG_PC; | |
920 | if (strcasecmp (name, "ccr") == 0) | |
921 | return REG_CCR; | |
922 | ||
923 | return REG_NONE; | |
924 | } | |
925 | ||
926 | static char * | |
ca43c854 | 927 | skip_whites (char *p) |
60bcf0fa NC |
928 | { |
929 | while (*p == ' ' || *p == '\t') | |
930 | p++; | |
931 | ||
932 | return p; | |
933 | } | |
934 | ||
fafb6d17 | 935 | /* Check the string at input_line_pointer |
60bcf0fa NC |
936 | to see if it is a valid register name. */ |
937 | static register_id | |
ca43c854 | 938 | register_name (void) |
60bcf0fa NC |
939 | { |
940 | register_id reg_number; | |
941 | char c, *p = input_line_pointer; | |
942 | ||
943 | if (!is_name_beginner (*p++)) | |
944 | return REG_NONE; | |
945 | ||
946 | while (is_part_of_name (*p++)) | |
947 | continue; | |
948 | ||
949 | c = *--p; | |
950 | if (c) | |
951 | *p++ = 0; | |
952 | ||
fafb6d17 | 953 | /* Look to see if it's in the register table. */ |
60bcf0fa NC |
954 | reg_number = reg_name_search (input_line_pointer); |
955 | if (reg_number != REG_NONE) | |
956 | { | |
957 | if (c) | |
958 | *--p = c; | |
959 | ||
960 | input_line_pointer = p; | |
961 | return reg_number; | |
962 | } | |
963 | if (c) | |
964 | *--p = c; | |
965 | ||
966 | return reg_number; | |
967 | } | |
577300ce SC |
968 | #define M6811_OP_CALL_ADDR 0x00800000 |
969 | #define M6811_OP_PAGE_ADDR 0x04000000 | |
60bcf0fa | 970 | |
fafb6d17 | 971 | /* Parse a string of operands and return an array of expressions. |
60bcf0fa | 972 | |
7bfda7eb SC |
973 | Operand mode[0] mode[1] exp[0] exp[1] |
974 | #n M6811_OP_IMM16 - O_* | |
975 | *<exp> M6811_OP_DIRECT - O_* | |
976 | .{+-}<exp> M6811_OP_JUMP_REL - O_* | |
977 | <exp> M6811_OP_IND16 - O_* | |
978 | ,r N,r M6812_OP_IDX M6812_OP_REG O_constant O_register | |
979 | n,-r M6812_PRE_DEC M6812_OP_REG O_constant O_register | |
980 | n,+r M6812_PRE_INC " " | |
981 | n,r- M6812_POST_DEC " " | |
982 | n,r+ M6812_POST_INC " " | |
983 | A,r B,r D,r M6811_OP_REG M6812_OP_REG O_register O_register | |
984 | [D,r] M6811_OP_D_IDX M6812_OP_REG O_register O_register | |
985 | [n,r] M6811_OP_D_IDX_2 M6812_OP_REG O_constant O_register */ | |
60bcf0fa | 986 | static int |
ca43c854 | 987 | get_operand (operand *oper, int which, long opmode) |
60bcf0fa NC |
988 | { |
989 | char *p = input_line_pointer; | |
990 | int mode; | |
991 | register_id reg; | |
992 | ||
993 | oper->exp.X_op = O_absent; | |
994 | oper->reg1 = REG_NONE; | |
995 | oper->reg2 = REG_NONE; | |
996 | mode = M6811_OP_NONE; | |
997 | ||
998 | p = skip_whites (p); | |
999 | ||
1000 | if (*p == 0 || *p == '\n' || *p == '\r') | |
1001 | { | |
1002 | input_line_pointer = p; | |
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | if (*p == '*' && (opmode & (M6811_OP_DIRECT | M6811_OP_IND16))) | |
1007 | { | |
1008 | mode = M6811_OP_DIRECT; | |
1009 | p++; | |
1010 | } | |
1011 | else if (*p == '#') | |
1012 | { | |
1013 | if (!(opmode & (M6811_OP_IMM8 | M6811_OP_IMM16 | M6811_OP_BITMASK))) | |
1014 | { | |
1015 | as_bad (_("Immediate operand is not allowed for operand %d."), | |
fafb6d17 | 1016 | which); |
60bcf0fa NC |
1017 | return -1; |
1018 | } | |
1019 | ||
1020 | mode = M6811_OP_IMM16; | |
1021 | p++; | |
1022 | if (strncmp (p, "%hi", 3) == 0) | |
1023 | { | |
1024 | p += 3; | |
1025 | mode |= M6811_OP_HIGH_ADDR; | |
1026 | } | |
1027 | else if (strncmp (p, "%lo", 3) == 0) | |
1028 | { | |
1029 | p += 3; | |
1030 | mode |= M6811_OP_LOW_ADDR; | |
1031 | } | |
577300ce SC |
1032 | /* %page modifier is used to obtain only the page number |
1033 | of the address of a function. */ | |
1034 | else if (strncmp (p, "%page", 5) == 0) | |
1035 | { | |
1036 | p += 5; | |
1037 | mode |= M6811_OP_PAGE_ADDR; | |
1038 | } | |
1039 | ||
1040 | /* %addr modifier is used to obtain the physical address part | |
1041 | of the function (16-bit). For 68HC12 the function will be | |
1042 | mapped in the 16K window at 0x8000 and the value will be | |
1043 | within that window (although the function address may not fit | |
1044 | in 16-bit). See bfd/elf32-m68hc12.c for the translation. */ | |
1045 | else if (strncmp (p, "%addr", 5) == 0) | |
1046 | { | |
1047 | p += 5; | |
1048 | mode |= M6811_OP_CALL_ADDR; | |
1049 | } | |
60bcf0fa NC |
1050 | } |
1051 | else if (*p == '.' && (p[1] == '+' || p[1] == '-')) | |
1052 | { | |
1053 | p++; | |
1054 | mode = M6811_OP_JUMP_REL; | |
1055 | } | |
1056 | else if (*p == '[') | |
1057 | { | |
1058 | if (current_architecture & cpu6811) | |
1059 | as_bad (_("Indirect indexed addressing is not valid for 68HC11.")); | |
1060 | ||
1061 | p++; | |
7bfda7eb | 1062 | mode = M6812_OP_D_IDX; |
60bcf0fa NC |
1063 | p = skip_whites (p); |
1064 | } | |
1065 | else if (*p == ',') /* Special handling of ,x and ,y. */ | |
1066 | { | |
1067 | p++; | |
1068 | input_line_pointer = p; | |
1069 | ||
1070 | reg = register_name (); | |
1071 | if (reg != REG_NONE) | |
1072 | { | |
1073 | oper->reg1 = reg; | |
1074 | oper->exp.X_op = O_constant; | |
1075 | oper->exp.X_add_number = 0; | |
1076 | oper->mode = M6812_OP_IDX; | |
1077 | return 1; | |
1078 | } | |
1079 | as_bad (_("Spurious `,' or bad indirect register addressing mode.")); | |
1080 | return -1; | |
1081 | } | |
577300ce SC |
1082 | /* Handle 68HC12 page specification in 'call foo,%page(bar)'. */ |
1083 | else if ((opmode & M6812_OP_PAGE) && strncmp (p, "%page", 5) == 0) | |
1084 | { | |
1085 | p += 5; | |
1086 | mode = M6811_OP_PAGE_ADDR | M6812_OP_PAGE | M6811_OP_IND16; | |
1087 | } | |
60bcf0fa NC |
1088 | input_line_pointer = p; |
1089 | ||
7bfda7eb | 1090 | if (mode == M6811_OP_NONE || mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1091 | reg = register_name (); |
1092 | else | |
1093 | reg = REG_NONE; | |
1094 | ||
1095 | if (reg != REG_NONE) | |
1096 | { | |
1097 | p = skip_whites (input_line_pointer); | |
7bfda7eb | 1098 | if (*p == ']' && mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1099 | { |
1100 | as_bad | |
1101 | (_("Missing second register or offset for indexed-indirect mode.")); | |
1102 | return -1; | |
1103 | } | |
1104 | ||
1105 | oper->reg1 = reg; | |
1106 | oper->mode = mode | M6812_OP_REG; | |
1107 | if (*p != ',') | |
1108 | { | |
7bfda7eb | 1109 | if (mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1110 | { |
1111 | as_bad (_("Missing second register for indexed-indirect mode.")); | |
1112 | return -1; | |
1113 | } | |
1114 | return 1; | |
1115 | } | |
1116 | ||
1117 | p++; | |
1118 | input_line_pointer = p; | |
1119 | reg = register_name (); | |
1120 | if (reg != REG_NONE) | |
1121 | { | |
1122 | p = skip_whites (input_line_pointer); | |
7bfda7eb | 1123 | if (mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1124 | { |
1125 | if (*p != ']') | |
1126 | { | |
1127 | as_bad (_("Missing `]' to close indexed-indirect mode.")); | |
1128 | return -1; | |
1129 | } | |
1130 | p++; | |
7bfda7eb | 1131 | oper->mode = M6812_OP_D_IDX; |
60bcf0fa NC |
1132 | } |
1133 | input_line_pointer = p; | |
1134 | ||
1135 | oper->reg2 = reg; | |
1136 | return 1; | |
1137 | } | |
1138 | return 1; | |
1139 | } | |
1140 | ||
1141 | /* In MRI mode, isolate the operand because we can't distinguish | |
1142 | operands from comments. */ | |
1143 | if (flag_mri) | |
1144 | { | |
1145 | char c = 0; | |
1146 | ||
1147 | p = skip_whites (p); | |
1148 | while (*p && *p != ' ' && *p != '\t') | |
1149 | p++; | |
1150 | ||
1151 | if (*p) | |
1152 | { | |
1153 | c = *p; | |
1154 | *p = 0; | |
1155 | } | |
1156 | ||
1157 | /* Parse as an expression. */ | |
1158 | expression (&oper->exp); | |
1159 | ||
1160 | if (c) | |
1161 | { | |
1162 | *p = c; | |
1163 | } | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | expression (&oper->exp); | |
1168 | } | |
1169 | ||
1170 | if (oper->exp.X_op == O_illegal) | |
1171 | { | |
1172 | as_bad (_("Illegal operand.")); | |
1173 | return -1; | |
1174 | } | |
1175 | else if (oper->exp.X_op == O_absent) | |
1176 | { | |
1177 | as_bad (_("Missing operand.")); | |
1178 | return -1; | |
1179 | } | |
1180 | ||
1181 | p = input_line_pointer; | |
1182 | ||
1183 | if (mode == M6811_OP_NONE || mode == M6811_OP_DIRECT | |
7bfda7eb | 1184 | || mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1185 | { |
1186 | p = skip_whites (input_line_pointer); | |
1187 | ||
1188 | if (*p == ',') | |
1189 | { | |
098f2ec3 KH |
1190 | int possible_mode = M6811_OP_NONE; |
1191 | char *old_input_line; | |
7bfda7eb SC |
1192 | |
1193 | old_input_line = p; | |
60bcf0fa NC |
1194 | p++; |
1195 | ||
1196 | /* 68HC12 pre increment or decrement. */ | |
1197 | if (mode == M6811_OP_NONE) | |
1198 | { | |
1199 | if (*p == '-') | |
1200 | { | |
ae3e85dd | 1201 | possible_mode = M6812_PRE_DEC; |
60bcf0fa | 1202 | p++; |
60bcf0fa NC |
1203 | } |
1204 | else if (*p == '+') | |
1205 | { | |
ae3e85dd | 1206 | possible_mode = M6812_PRE_INC; |
60bcf0fa | 1207 | p++; |
60bcf0fa NC |
1208 | } |
1209 | p = skip_whites (p); | |
1210 | } | |
1211 | input_line_pointer = p; | |
1212 | reg = register_name (); | |
1213 | ||
098f2ec3 KH |
1214 | /* Backtrack if we have a valid constant expression and |
1215 | it does not correspond to the offset of the 68HC12 indexed | |
1216 | addressing mode (as in N,x). */ | |
1217 | if (reg == REG_NONE && mode == M6811_OP_NONE | |
1218 | && possible_mode != M6811_OP_NONE) | |
1219 | { | |
1220 | oper->mode = M6811_OP_IND16 | M6811_OP_JUMP_REL; | |
1221 | input_line_pointer = skip_whites (old_input_line); | |
1222 | return 1; | |
1223 | } | |
1224 | ||
1225 | if (possible_mode != M6811_OP_NONE) | |
1226 | mode = possible_mode; | |
1227 | ||
1228 | if ((current_architecture & cpu6811) | |
1229 | && possible_mode != M6811_OP_NONE) | |
1230 | as_bad (_("Pre-increment mode is not valid for 68HC11")); | |
fafb6d17 | 1231 | /* Backtrack. */ |
60bcf0fa NC |
1232 | if (which == 0 && opmode & M6812_OP_IDX_P2 |
1233 | && reg != REG_X && reg != REG_Y | |
1234 | && reg != REG_PC && reg != REG_SP) | |
1235 | { | |
1236 | reg = REG_NONE; | |
1237 | input_line_pointer = p; | |
1238 | } | |
1239 | ||
1240 | if (reg == REG_NONE && mode != M6811_OP_DIRECT | |
1241 | && !(mode == M6811_OP_NONE && opmode & M6811_OP_IND16)) | |
1242 | { | |
1243 | as_bad (_("Wrong register in register indirect mode.")); | |
1244 | return -1; | |
1245 | } | |
7bfda7eb | 1246 | if (mode == M6812_OP_D_IDX) |
60bcf0fa NC |
1247 | { |
1248 | p = skip_whites (input_line_pointer); | |
1249 | if (*p++ != ']') | |
1250 | { | |
1251 | as_bad (_("Missing `]' to close register indirect operand.")); | |
1252 | return -1; | |
1253 | } | |
1254 | input_line_pointer = p; | |
7bfda7eb SC |
1255 | oper->reg1 = reg; |
1256 | oper->mode = M6812_OP_D_IDX_2; | |
1257 | return 1; | |
60bcf0fa NC |
1258 | } |
1259 | if (reg != REG_NONE) | |
1260 | { | |
1261 | oper->reg1 = reg; | |
1262 | if (mode == M6811_OP_NONE) | |
1263 | { | |
1264 | p = input_line_pointer; | |
1265 | if (*p == '-') | |
1266 | { | |
1267 | mode = M6812_POST_DEC; | |
1268 | p++; | |
1269 | if (current_architecture & cpu6811) | |
1270 | as_bad | |
1271 | (_("Post-decrement mode is not valid for 68HC11.")); | |
1272 | } | |
1273 | else if (*p == '+') | |
1274 | { | |
1275 | mode = M6812_POST_INC; | |
1276 | p++; | |
1277 | if (current_architecture & cpu6811) | |
1278 | as_bad | |
1279 | (_("Post-increment mode is not valid for 68HC11.")); | |
1280 | } | |
1281 | else | |
1282 | mode = M6812_OP_IDX; | |
1283 | ||
1284 | input_line_pointer = p; | |
1285 | } | |
1286 | else | |
1287 | mode |= M6812_OP_IDX; | |
1288 | ||
1289 | oper->mode = mode; | |
1290 | return 1; | |
1291 | } | |
7bfda7eb | 1292 | input_line_pointer = old_input_line; |
60bcf0fa NC |
1293 | } |
1294 | ||
1295 | if (mode == M6812_OP_D_IDX_2) | |
1296 | { | |
1297 | as_bad (_("Invalid indexed indirect mode.")); | |
1298 | return -1; | |
1299 | } | |
1300 | } | |
1301 | ||
1302 | /* If the mode is not known until now, this is either a label | |
1303 | or an indirect address. */ | |
1304 | if (mode == M6811_OP_NONE) | |
fafb6d17 | 1305 | mode = M6811_OP_IND16 | M6811_OP_JUMP_REL; |
60bcf0fa NC |
1306 | |
1307 | p = input_line_pointer; | |
1308 | while (*p == ' ' || *p == '\t') | |
1309 | p++; | |
1310 | input_line_pointer = p; | |
1311 | oper->mode = mode; | |
1312 | ||
1313 | return 1; | |
1314 | } | |
1315 | ||
1316 | #define M6812_AUTO_INC_DEC (M6812_PRE_INC | M6812_PRE_DEC \ | |
1317 | | M6812_POST_INC | M6812_POST_DEC) | |
1318 | ||
1319 | /* Checks that the number 'num' fits for a given mode. */ | |
1320 | static int | |
ca43c854 | 1321 | check_range (long num, int mode) |
60bcf0fa NC |
1322 | { |
1323 | /* Auto increment and decrement are ok for [-8..8] without 0. */ | |
1324 | if (mode & M6812_AUTO_INC_DEC) | |
fafb6d17 | 1325 | return (num != 0 && num <= 8 && num >= -8); |
60bcf0fa | 1326 | |
986c6f4b | 1327 | /* The 68HC12 supports 5, 9 and 16-bit offsets. */ |
60bcf0fa | 1328 | if (mode & (M6812_INDEXED_IND | M6812_INDEXED | M6812_OP_IDX)) |
fafb6d17 | 1329 | mode = M6811_OP_IND16; |
60bcf0fa NC |
1330 | |
1331 | if (mode & M6812_OP_JUMP_REL16) | |
1332 | mode = M6811_OP_IND16; | |
1333 | ||
7bfda7eb | 1334 | mode &= ~M6811_OP_BRANCH; |
60bcf0fa NC |
1335 | switch (mode) |
1336 | { | |
1337 | case M6811_OP_IX: | |
1338 | case M6811_OP_IY: | |
1339 | case M6811_OP_DIRECT: | |
1340 | return (num >= 0 && num <= 255) ? 1 : 0; | |
1341 | ||
1342 | case M6811_OP_BITMASK: | |
1343 | case M6811_OP_IMM8: | |
7bfda7eb | 1344 | case M6812_OP_PAGE: |
60bcf0fa NC |
1345 | return (((num & 0xFFFFFF00) == 0) || ((num & 0xFFFFFF00) == 0xFFFFFF00)) |
1346 | ? 1 : 0; | |
1347 | ||
1348 | case M6811_OP_JUMP_REL: | |
1349 | return (num >= -128 && num <= 127) ? 1 : 0; | |
1350 | ||
1351 | case M6811_OP_IND16: | |
7bfda7eb | 1352 | case M6811_OP_IND16 | M6812_OP_PAGE: |
60bcf0fa NC |
1353 | case M6811_OP_IMM16: |
1354 | return (((num & 0xFFFF0000) == 0) || ((num & 0xFFFF0000) == 0xFFFF0000)) | |
1355 | ? 1 : 0; | |
1356 | ||
1357 | case M6812_OP_IBCC_MARKER: | |
1358 | case M6812_OP_TBCC_MARKER: | |
1359 | case M6812_OP_DBCC_MARKER: | |
1360 | return (num >= -256 && num <= 255) ? 1 : 0; | |
1361 | ||
1362 | case M6812_OP_TRAP_ID: | |
1363 | return ((num >= 0x30 && num <= 0x39) | |
1364 | || (num >= 0x40 && num <= 0x0ff)) ? 1 : 0; | |
1365 | ||
1366 | default: | |
1367 | return 0; | |
1368 | } | |
1369 | } | |
60bcf0fa NC |
1370 | \f |
1371 | /* Gas fixup generation. */ | |
1372 | ||
1373 | /* Put a 1 byte expression described by 'oper'. If this expression contains | |
1374 | unresolved symbols, generate an 8-bit fixup. */ | |
1375 | static void | |
ca43c854 | 1376 | fixup8 (expressionS *oper, int mode, int opmode) |
60bcf0fa NC |
1377 | { |
1378 | char *f; | |
1379 | ||
1380 | f = frag_more (1); | |
1381 | ||
1382 | if (oper->X_op == O_constant) | |
1383 | { | |
1384 | if (mode & M6812_OP_TRAP_ID | |
1385 | && !check_range (oper->X_add_number, M6812_OP_TRAP_ID)) | |
1386 | { | |
1387 | static char trap_id_warn_once = 0; | |
1388 | ||
1389 | as_bad (_("Trap id `%ld' is out of range."), oper->X_add_number); | |
1390 | if (trap_id_warn_once == 0) | |
1391 | { | |
1392 | trap_id_warn_once = 1; | |
1393 | as_bad (_("Trap id must be within [0x30..0x39] or [0x40..0xff].")); | |
1394 | } | |
1395 | } | |
1396 | ||
1397 | if (!(mode & M6812_OP_TRAP_ID) | |
1398 | && !check_range (oper->X_add_number, mode)) | |
1399 | { | |
1400 | as_bad (_("Operand out of 8-bit range: `%ld'."), oper->X_add_number); | |
1401 | } | |
1402 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FF, 1); | |
1403 | } | |
1404 | else if (oper->X_op != O_register) | |
1405 | { | |
1406 | if (mode & M6812_OP_TRAP_ID) | |
1407 | as_bad (_("The trap id must be a constant.")); | |
1408 | ||
1409 | if (mode == M6811_OP_JUMP_REL) | |
1410 | { | |
1411 | fixS *fixp; | |
1412 | ||
1413 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
b34976b6 | 1414 | oper, TRUE, BFD_RELOC_8_PCREL); |
60bcf0fa NC |
1415 | fixp->fx_pcrel_adjust = 1; |
1416 | } | |
1417 | else | |
1418 | { | |
577300ce SC |
1419 | fixS *fixp; |
1420 | int reloc; | |
1421 | ||
1422 | /* Now create an 8-bit fixup. If there was some %hi, %lo | |
1423 | or %page modifier, generate the reloc accordingly. */ | |
1424 | if (opmode & M6811_OP_HIGH_ADDR) | |
1425 | reloc = BFD_RELOC_M68HC11_HI8; | |
1426 | else if (opmode & M6811_OP_LOW_ADDR) | |
1427 | reloc = BFD_RELOC_M68HC11_LO8; | |
1428 | else if (opmode & M6811_OP_PAGE_ADDR) | |
1429 | reloc = BFD_RELOC_M68HC11_PAGE; | |
1430 | else | |
1431 | reloc = BFD_RELOC_8; | |
1432 | ||
1433 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 1, | |
1434 | oper, FALSE, reloc); | |
1435 | if (reloc != BFD_RELOC_8) | |
1436 | fixp->fx_no_overflow = 1; | |
60bcf0fa NC |
1437 | } |
1438 | number_to_chars_bigendian (f, 0, 1); | |
1439 | } | |
1440 | else | |
1441 | { | |
1442 | as_fatal (_("Operand `%x' not recognized in fixup8."), oper->X_op); | |
1443 | } | |
1444 | } | |
1445 | ||
986c6f4b | 1446 | /* Put a 2 byte expression described by 'oper'. If this expression contains |
60bcf0fa NC |
1447 | unresolved symbols, generate a 16-bit fixup. */ |
1448 | static void | |
ca43c854 | 1449 | fixup16 (expressionS *oper, int mode, int opmode ATTRIBUTE_UNUSED) |
60bcf0fa NC |
1450 | { |
1451 | char *f; | |
1452 | ||
1453 | f = frag_more (2); | |
1454 | ||
1455 | if (oper->X_op == O_constant) | |
1456 | { | |
1457 | if (!check_range (oper->X_add_number, mode)) | |
1458 | { | |
1459 | as_bad (_("Operand out of 16-bit range: `%ld'."), | |
fafb6d17 | 1460 | oper->X_add_number); |
60bcf0fa NC |
1461 | } |
1462 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FFFF, 2); | |
1463 | } | |
1464 | else if (oper->X_op != O_register) | |
1465 | { | |
1466 | fixS *fixp; | |
577300ce SC |
1467 | int reloc; |
1468 | ||
1469 | if ((opmode & M6811_OP_CALL_ADDR) && (mode & M6811_OP_IMM16)) | |
1470 | reloc = BFD_RELOC_M68HC11_LO16; | |
1471 | else if (mode & M6812_OP_JUMP_REL16) | |
1472 | reloc = BFD_RELOC_16_PCREL; | |
1473 | else if (mode & M6812_OP_PAGE) | |
1474 | reloc = BFD_RELOC_M68HC11_LO16; | |
1475 | else | |
1476 | reloc = BFD_RELOC_16; | |
60bcf0fa NC |
1477 | |
1478 | /* Now create a 16-bit fixup. */ | |
1479 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 2, | |
1480 | oper, | |
577300ce SC |
1481 | reloc == BFD_RELOC_16_PCREL, |
1482 | reloc); | |
60bcf0fa | 1483 | number_to_chars_bigendian (f, 0, 2); |
577300ce | 1484 | if (reloc == BFD_RELOC_16_PCREL) |
60bcf0fa | 1485 | fixp->fx_pcrel_adjust = 2; |
577300ce SC |
1486 | if (reloc == BFD_RELOC_M68HC11_LO16) |
1487 | fixp->fx_no_overflow = 1; | |
60bcf0fa NC |
1488 | } |
1489 | else | |
1490 | { | |
1491 | as_fatal (_("Operand `%x' not recognized in fixup16."), oper->X_op); | |
1492 | } | |
1493 | } | |
7bfda7eb SC |
1494 | |
1495 | /* Put a 3 byte expression described by 'oper'. If this expression contains | |
1496 | unresolved symbols, generate a 24-bit fixup. */ | |
1497 | static void | |
ca43c854 | 1498 | fixup24 (expressionS *oper, int mode, int opmode ATTRIBUTE_UNUSED) |
7bfda7eb SC |
1499 | { |
1500 | char *f; | |
1501 | ||
1502 | f = frag_more (3); | |
1503 | ||
1504 | if (oper->X_op == O_constant) | |
1505 | { | |
1506 | if (!check_range (oper->X_add_number, mode)) | |
1507 | { | |
1508 | as_bad (_("Operand out of 16-bit range: `%ld'."), | |
1509 | oper->X_add_number); | |
1510 | } | |
1511 | number_to_chars_bigendian (f, oper->X_add_number & 0x0FFFFFF, 3); | |
1512 | } | |
1513 | else if (oper->X_op != O_register) | |
1514 | { | |
1515 | fixS *fixp; | |
1516 | ||
1517 | /* Now create a 24-bit fixup. */ | |
1518 | fixp = fix_new_exp (frag_now, f - frag_now->fr_literal, 2, | |
b34976b6 | 1519 | oper, FALSE, BFD_RELOC_M68HC11_24); |
7bfda7eb SC |
1520 | number_to_chars_bigendian (f, 0, 3); |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | as_fatal (_("Operand `%x' not recognized in fixup16."), oper->X_op); | |
1525 | } | |
1526 | } | |
60bcf0fa NC |
1527 | \f |
1528 | /* 68HC11 and 68HC12 code generation. */ | |
1529 | ||
1530 | /* Translate the short branch/bsr instruction into a long branch. */ | |
1531 | static unsigned char | |
ca43c854 | 1532 | convert_branch (unsigned char code) |
60bcf0fa NC |
1533 | { |
1534 | if (IS_OPCODE (code, M6812_BSR)) | |
1535 | return M6812_JSR; | |
1536 | else if (IS_OPCODE (code, M6811_BSR)) | |
1537 | return M6811_JSR; | |
1538 | else if (IS_OPCODE (code, M6811_BRA)) | |
1539 | return (current_architecture & cpu6812) ? M6812_JMP : M6811_JMP; | |
1540 | else | |
1541 | as_fatal (_("Unexpected branch conversion with `%x'"), code); | |
1542 | ||
1543 | /* Keep gcc happy. */ | |
1544 | return M6811_JSR; | |
1545 | } | |
1546 | ||
1547 | /* Start a new insn that contains at least 'size' bytes. Record the | |
1548 | line information of that insn in the dwarf2 debug sections. */ | |
fafb6d17 | 1549 | static char * |
ca43c854 | 1550 | m68hc11_new_insn (int size) |
60bcf0fa | 1551 | { |
fafb6d17 | 1552 | char *f; |
60bcf0fa NC |
1553 | |
1554 | f = frag_more (size); | |
1555 | ||
4dc7ead9 | 1556 | dwarf2_emit_insn (size); |
fafb6d17 | 1557 | |
60bcf0fa NC |
1558 | return f; |
1559 | } | |
1560 | ||
1561 | /* Builds a jump instruction (bra, bcc, bsr). */ | |
1562 | static void | |
ca43c854 SC |
1563 | build_jump_insn (struct m68hc11_opcode *opcode, operand operands[], |
1564 | int nb_operands, int jmp_mode) | |
60bcf0fa NC |
1565 | { |
1566 | unsigned char code; | |
60bcf0fa NC |
1567 | char *f; |
1568 | unsigned long n; | |
e371935f SC |
1569 | fragS *frag; |
1570 | int where; | |
60bcf0fa | 1571 | |
67c1ffbe | 1572 | /* The relative branch conversion is not supported for |
60bcf0fa NC |
1573 | brclr and brset. */ |
1574 | assert ((opcode->format & M6811_OP_BITMASK) == 0); | |
1575 | assert (nb_operands == 1); | |
1576 | assert (operands[0].reg1 == REG_NONE && operands[0].reg2 == REG_NONE); | |
1577 | ||
1578 | code = opcode->opcode; | |
60bcf0fa NC |
1579 | |
1580 | n = operands[0].exp.X_add_number; | |
1581 | ||
1582 | /* Turn into a long branch: | |
1583 | - when force long branch option (and not for jbcc pseudos), | |
1584 | - when jbcc and the constant is out of -128..127 range, | |
1585 | - when branch optimization is allowed and branch out of range. */ | |
1586 | if ((jmp_mode == 0 && flag_force_long_jumps) | |
1587 | || (operands[0].exp.X_op == O_constant | |
1588 | && (!check_range (n, opcode->format) && | |
1589 | (jmp_mode == 1 || flag_fixed_branchs == 0)))) | |
1590 | { | |
e371935f SC |
1591 | frag = frag_now; |
1592 | where = frag_now_fix (); | |
1593 | ||
1594 | fix_new (frag_now, frag_now_fix (), 1, | |
1595 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); | |
1596 | ||
60bcf0fa NC |
1597 | if (code == M6811_BSR || code == M6811_BRA || code == M6812_BSR) |
1598 | { | |
1599 | code = convert_branch (code); | |
1600 | ||
1601 | f = m68hc11_new_insn (1); | |
1602 | number_to_chars_bigendian (f, code, 1); | |
1603 | } | |
1604 | else if (current_architecture & cpu6812) | |
1605 | { | |
1606 | /* 68HC12: translate the bcc into a lbcc. */ | |
1607 | f = m68hc11_new_insn (2); | |
1608 | number_to_chars_bigendian (f, M6811_OPCODE_PAGE2, 1); | |
1609 | number_to_chars_bigendian (f + 1, code, 1); | |
1610 | fixup16 (&operands[0].exp, M6812_OP_JUMP_REL16, | |
1611 | M6812_OP_JUMP_REL16); | |
1612 | return; | |
1613 | } | |
1614 | else | |
1615 | { | |
1616 | /* 68HC11: translate the bcc into b!cc +3; jmp <L>. */ | |
1617 | f = m68hc11_new_insn (3); | |
1618 | code ^= 1; | |
1619 | number_to_chars_bigendian (f, code, 1); | |
1620 | number_to_chars_bigendian (f + 1, 3, 1); | |
1621 | number_to_chars_bigendian (f + 2, M6811_JMP, 1); | |
1622 | } | |
1623 | fixup16 (&operands[0].exp, M6811_OP_IND16, M6811_OP_IND16); | |
1624 | return; | |
1625 | } | |
1626 | ||
1627 | /* Branch with a constant that must fit in 8-bits. */ | |
1628 | if (operands[0].exp.X_op == O_constant) | |
1629 | { | |
1630 | if (!check_range (n, opcode->format)) | |
1631 | { | |
1632 | as_bad (_("Operand out of range for a relative branch: `%ld'"), | |
1633 | n); | |
1634 | } | |
1635 | else if (opcode->format & M6812_OP_JUMP_REL16) | |
1636 | { | |
1637 | f = m68hc11_new_insn (4); | |
1638 | number_to_chars_bigendian (f, M6811_OPCODE_PAGE2, 1); | |
1639 | number_to_chars_bigendian (f + 1, code, 1); | |
1640 | number_to_chars_bigendian (f + 2, n & 0x0ffff, 2); | |
1641 | } | |
1642 | else | |
1643 | { | |
1644 | f = m68hc11_new_insn (2); | |
1645 | number_to_chars_bigendian (f, code, 1); | |
1646 | number_to_chars_bigendian (f + 1, n & 0x0FF, 1); | |
1647 | } | |
1648 | } | |
1649 | else if (opcode->format & M6812_OP_JUMP_REL16) | |
1650 | { | |
e371935f SC |
1651 | frag = frag_now; |
1652 | where = frag_now_fix (); | |
1653 | ||
1654 | fix_new (frag_now, frag_now_fix (), 1, | |
1655 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); | |
1656 | ||
60bcf0fa NC |
1657 | f = m68hc11_new_insn (2); |
1658 | number_to_chars_bigendian (f, M6811_OPCODE_PAGE2, 1); | |
1659 | number_to_chars_bigendian (f + 1, code, 1); | |
1660 | fixup16 (&operands[0].exp, M6812_OP_JUMP_REL16, M6812_OP_JUMP_REL16); | |
1661 | } | |
1662 | else | |
1663 | { | |
1664 | char *opcode; | |
1665 | ||
e371935f SC |
1666 | frag = frag_now; |
1667 | where = frag_now_fix (); | |
1668 | ||
1669 | fix_new (frag_now, frag_now_fix (), 1, | |
1670 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); | |
1671 | ||
60bcf0fa NC |
1672 | /* Branch offset must fit in 8-bits, don't do some relax. */ |
1673 | if (jmp_mode == 0 && flag_fixed_branchs) | |
1674 | { | |
1675 | opcode = m68hc11_new_insn (1); | |
1676 | number_to_chars_bigendian (opcode, code, 1); | |
1677 | fixup8 (&operands[0].exp, M6811_OP_JUMP_REL, M6811_OP_JUMP_REL); | |
1678 | } | |
1679 | ||
1680 | /* bra/bsr made be changed into jmp/jsr. */ | |
1681 | else if (code == M6811_BSR || code == M6811_BRA || code == M6812_BSR) | |
1682 | { | |
4fe7ef96 SC |
1683 | /* Allocate worst case storage. */ |
1684 | opcode = m68hc11_new_insn (3); | |
60bcf0fa NC |
1685 | number_to_chars_bigendian (opcode, code, 1); |
1686 | number_to_chars_bigendian (opcode + 1, 0, 1); | |
4fe7ef96 SC |
1687 | frag_variant (rs_machine_dependent, 1, 1, |
1688 | ENCODE_RELAX (STATE_PC_RELATIVE, STATE_UNDF), | |
1689 | operands[0].exp.X_add_symbol, (offsetT) n, | |
1690 | opcode); | |
60bcf0fa NC |
1691 | } |
1692 | else if (current_architecture & cpu6812) | |
1693 | { | |
1694 | opcode = m68hc11_new_insn (2); | |
1695 | number_to_chars_bigendian (opcode, code, 1); | |
1696 | number_to_chars_bigendian (opcode + 1, 0, 1); | |
1697 | frag_var (rs_machine_dependent, 2, 2, | |
1698 | ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_UNDF), | |
1699 | operands[0].exp.X_add_symbol, (offsetT) n, opcode); | |
1700 | } | |
1701 | else | |
1702 | { | |
1703 | opcode = m68hc11_new_insn (2); | |
1704 | number_to_chars_bigendian (opcode, code, 1); | |
1705 | number_to_chars_bigendian (opcode + 1, 0, 1); | |
1706 | frag_var (rs_machine_dependent, 3, 3, | |
1707 | ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_UNDF), | |
1708 | operands[0].exp.X_add_symbol, (offsetT) n, opcode); | |
1709 | } | |
1710 | } | |
1711 | } | |
1712 | ||
1713 | /* Builds a dbne/dbeq/tbne/tbeq instruction. */ | |
1714 | static void | |
ca43c854 SC |
1715 | build_dbranch_insn (struct m68hc11_opcode *opcode, operand operands[], |
1716 | int nb_operands, int jmp_mode) | |
60bcf0fa NC |
1717 | { |
1718 | unsigned char code; | |
60bcf0fa NC |
1719 | char *f; |
1720 | unsigned long n; | |
1721 | ||
67c1ffbe | 1722 | /* The relative branch conversion is not supported for |
60bcf0fa NC |
1723 | brclr and brset. */ |
1724 | assert ((opcode->format & M6811_OP_BITMASK) == 0); | |
1725 | assert (nb_operands == 2); | |
1726 | assert (operands[0].reg1 != REG_NONE); | |
1727 | ||
1728 | code = opcode->opcode & 0x0FF; | |
60bcf0fa NC |
1729 | |
1730 | f = m68hc11_new_insn (1); | |
1731 | number_to_chars_bigendian (f, code, 1); | |
1732 | ||
1733 | n = operands[1].exp.X_add_number; | |
1734 | code = operands[0].reg1; | |
1735 | ||
1736 | if (operands[0].reg1 == REG_NONE || operands[0].reg1 == REG_CCR | |
1737 | || operands[0].reg1 == REG_PC) | |
1738 | as_bad (_("Invalid register for dbcc/tbcc instruction.")); | |
1739 | ||
1740 | if (opcode->format & M6812_OP_IBCC_MARKER) | |
1741 | code |= 0x80; | |
1742 | else if (opcode->format & M6812_OP_TBCC_MARKER) | |
1743 | code |= 0x40; | |
1744 | ||
1745 | if (!(opcode->format & M6812_OP_EQ_MARKER)) | |
1746 | code |= 0x20; | |
1747 | ||
1748 | /* Turn into a long branch: | |
1749 | - when force long branch option (and not for jbcc pseudos), | |
1750 | - when jdbcc and the constant is out of -256..255 range, | |
1751 | - when branch optimization is allowed and branch out of range. */ | |
1752 | if ((jmp_mode == 0 && flag_force_long_jumps) | |
1753 | || (operands[1].exp.X_op == O_constant | |
1754 | && (!check_range (n, M6812_OP_IBCC_MARKER) && | |
1755 | (jmp_mode == 1 || flag_fixed_branchs == 0)))) | |
1756 | { | |
1757 | f = frag_more (2); | |
1758 | code ^= 0x20; | |
1759 | number_to_chars_bigendian (f, code, 1); | |
1760 | number_to_chars_bigendian (f + 1, M6812_JMP, 1); | |
1761 | fixup16 (&operands[0].exp, M6811_OP_IND16, M6811_OP_IND16); | |
1762 | return; | |
1763 | } | |
1764 | ||
1765 | /* Branch with a constant that must fit in 9-bits. */ | |
1766 | if (operands[1].exp.X_op == O_constant) | |
1767 | { | |
1768 | if (!check_range (n, M6812_OP_IBCC_MARKER)) | |
1769 | { | |
1770 | as_bad (_("Operand out of range for a relative branch: `%ld'"), | |
1771 | n); | |
1772 | } | |
1773 | else | |
1774 | { | |
1775 | if ((long) n < 0) | |
1776 | code |= 0x10; | |
1777 | ||
1778 | f = frag_more (2); | |
1779 | number_to_chars_bigendian (f, code, 1); | |
1780 | number_to_chars_bigendian (f + 1, n & 0x0FF, 1); | |
1781 | } | |
1782 | } | |
1783 | else | |
1784 | { | |
1785 | /* Branch offset must fit in 8-bits, don't do some relax. */ | |
1786 | if (jmp_mode == 0 && flag_fixed_branchs) | |
1787 | { | |
1788 | fixup8 (&operands[0].exp, M6811_OP_JUMP_REL, M6811_OP_JUMP_REL); | |
1789 | } | |
1790 | ||
1791 | else | |
1792 | { | |
1793 | f = frag_more (2); | |
1794 | number_to_chars_bigendian (f, code, 1); | |
1795 | number_to_chars_bigendian (f + 1, 0, 1); | |
1796 | frag_var (rs_machine_dependent, 3, 3, | |
1797 | ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_UNDF), | |
1798 | operands[1].exp.X_add_symbol, (offsetT) n, f); | |
1799 | } | |
1800 | } | |
1801 | } | |
1802 | ||
1803 | #define OP_EXTENDED (M6811_OP_PAGE2 | M6811_OP_PAGE3 | M6811_OP_PAGE4) | |
1804 | ||
1805 | /* Assemble the post index byte for 68HC12 extended addressing modes. */ | |
1806 | static int | |
ca43c854 | 1807 | build_indexed_byte (operand *op, int format ATTRIBUTE_UNUSED, int move_insn) |
60bcf0fa NC |
1808 | { |
1809 | unsigned char byte = 0; | |
1810 | char *f; | |
1811 | int mode; | |
1812 | long val; | |
1813 | ||
1814 | val = op->exp.X_add_number; | |
1815 | mode = op->mode; | |
1816 | if (mode & M6812_AUTO_INC_DEC) | |
1817 | { | |
1818 | byte = 0x20; | |
1819 | if (mode & (M6812_POST_INC | M6812_POST_DEC)) | |
1820 | byte |= 0x10; | |
1821 | ||
1822 | if (op->exp.X_op == O_constant) | |
1823 | { | |
1824 | if (!check_range (val, mode)) | |
1825 | { | |
1826 | as_bad (_("Increment/decrement value is out of range: `%ld'."), | |
fafb6d17 | 1827 | val); |
60bcf0fa NC |
1828 | } |
1829 | if (mode & (M6812_POST_INC | M6812_PRE_INC)) | |
1830 | byte |= (val - 1) & 0x07; | |
1831 | else | |
1832 | byte |= (8 - ((val) & 7)) | 0x8; | |
1833 | } | |
1834 | switch (op->reg1) | |
1835 | { | |
1836 | case REG_NONE: | |
1837 | as_fatal (_("Expecting a register.")); | |
1838 | ||
1839 | case REG_X: | |
1840 | byte |= 0; | |
1841 | break; | |
1842 | ||
1843 | case REG_Y: | |
1844 | byte |= 0x40; | |
1845 | break; | |
1846 | ||
1847 | case REG_SP: | |
1848 | byte |= 0x80; | |
1849 | break; | |
1850 | ||
1851 | default: | |
1852 | as_bad (_("Invalid register for post/pre increment.")); | |
1853 | break; | |
1854 | } | |
1855 | ||
1856 | f = frag_more (1); | |
1857 | number_to_chars_bigendian (f, byte, 1); | |
1858 | return 1; | |
1859 | } | |
1860 | ||
7bfda7eb | 1861 | if (mode & (M6812_OP_IDX | M6812_OP_D_IDX_2)) |
60bcf0fa NC |
1862 | { |
1863 | switch (op->reg1) | |
1864 | { | |
1865 | case REG_X: | |
1866 | byte = 0; | |
1867 | break; | |
1868 | ||
1869 | case REG_Y: | |
1870 | byte = 1; | |
1871 | break; | |
1872 | ||
1873 | case REG_SP: | |
1874 | byte = 2; | |
1875 | break; | |
1876 | ||
1877 | case REG_PC: | |
1878 | byte = 3; | |
1879 | break; | |
1880 | ||
1881 | default: | |
1882 | as_bad (_("Invalid register.")); | |
1883 | break; | |
1884 | } | |
1885 | if (op->exp.X_op == O_constant) | |
1886 | { | |
1887 | if (!check_range (val, M6812_OP_IDX)) | |
1888 | { | |
1889 | as_bad (_("Offset out of 16-bit range: %ld."), val); | |
1890 | } | |
1891 | ||
1892 | if (move_insn && !(val >= -16 && val <= 15)) | |
1893 | { | |
ae3e85dd | 1894 | as_bad (_("Offset out of 5-bit range for movw/movb insn: %ld."), |
098f2ec3 | 1895 | val); |
60bcf0fa NC |
1896 | return -1; |
1897 | } | |
1898 | ||
7bfda7eb | 1899 | if (val >= -16 && val <= 15 && !(mode & M6812_OP_D_IDX_2)) |
60bcf0fa NC |
1900 | { |
1901 | byte = byte << 6; | |
1902 | byte |= val & 0x1f; | |
1903 | f = frag_more (1); | |
1904 | number_to_chars_bigendian (f, byte, 1); | |
1905 | return 1; | |
1906 | } | |
7bfda7eb | 1907 | else if (val >= -256 && val <= 255 && !(mode & M6812_OP_D_IDX_2)) |
60bcf0fa NC |
1908 | { |
1909 | byte = byte << 3; | |
1910 | byte |= 0xe0; | |
1911 | if (val < 0) | |
1912 | byte |= 0x1; | |
1913 | f = frag_more (2); | |
1914 | number_to_chars_bigendian (f, byte, 1); | |
1915 | number_to_chars_bigendian (f + 1, val & 0x0FF, 1); | |
1916 | return 2; | |
1917 | } | |
1918 | else | |
1919 | { | |
1920 | byte = byte << 3; | |
7bfda7eb | 1921 | if (mode & M6812_OP_D_IDX_2) |
60bcf0fa NC |
1922 | byte |= 0xe3; |
1923 | else | |
1924 | byte |= 0xe2; | |
1925 | ||
1926 | f = frag_more (3); | |
1927 | number_to_chars_bigendian (f, byte, 1); | |
1928 | number_to_chars_bigendian (f + 1, val & 0x0FFFF, 2); | |
1929 | return 3; | |
1930 | } | |
1931 | } | |
7bfda7eb SC |
1932 | if (mode & M6812_OP_D_IDX_2) |
1933 | { | |
1934 | byte = (byte << 3) | 0xe3; | |
1935 | f = frag_more (1); | |
1936 | number_to_chars_bigendian (f, byte, 1); | |
1937 | ||
1938 | fixup16 (&op->exp, 0, 0); | |
1939 | } | |
1940 | else if (op->reg1 != REG_PC) | |
098f2ec3 | 1941 | { |
c9e03e8b SC |
1942 | symbolS *sym; |
1943 | offsetT off; | |
1944 | ||
098f2ec3 KH |
1945 | f = frag_more (1); |
1946 | number_to_chars_bigendian (f, byte, 1); | |
c9e03e8b SC |
1947 | sym = op->exp.X_add_symbol; |
1948 | off = op->exp.X_add_number; | |
1949 | if (op->exp.X_op != O_symbol) | |
1950 | { | |
1951 | sym = make_expr_symbol (&op->exp); | |
1952 | off = 0; | |
1953 | } | |
28d39d1a NC |
1954 | /* movb/movw cannot be relaxed. */ |
1955 | if (move_insn) | |
1956 | { | |
1957 | byte <<= 6; | |
1958 | number_to_chars_bigendian (f, byte, 1); | |
1959 | fix_new (frag_now, f - frag_now->fr_literal, 1, | |
1960 | sym, off, 0, BFD_RELOC_M68HC12_5B); | |
1961 | return 1; | |
1962 | } | |
1963 | else | |
1964 | { | |
1965 | number_to_chars_bigendian (f, byte, 1); | |
1966 | frag_var (rs_machine_dependent, 2, 2, | |
1967 | ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_UNDF), | |
1968 | sym, off, f); | |
1969 | } | |
098f2ec3 | 1970 | } |
88051039 | 1971 | else |
098f2ec3 KH |
1972 | { |
1973 | f = frag_more (1); | |
28d39d1a NC |
1974 | /* movb/movw cannot be relaxed. */ |
1975 | if (move_insn) | |
1976 | { | |
1977 | byte <<= 6; | |
1978 | number_to_chars_bigendian (f, byte, 1); | |
1979 | fix_new (frag_now, f - frag_now->fr_literal, 1, | |
1980 | op->exp.X_add_symbol, op->exp.X_add_number, 0, BFD_RELOC_M68HC12_5B); | |
1981 | return 1; | |
1982 | } | |
1983 | else | |
1984 | { | |
1985 | number_to_chars_bigendian (f, byte, 1); | |
1986 | frag_var (rs_machine_dependent, 2, 2, | |
1987 | ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_UNDF), | |
1988 | op->exp.X_add_symbol, | |
1989 | op->exp.X_add_number, f); | |
1990 | } | |
098f2ec3 | 1991 | } |
60bcf0fa NC |
1992 | return 3; |
1993 | } | |
1994 | ||
7bfda7eb | 1995 | if (mode & (M6812_OP_REG | M6812_OP_D_IDX)) |
60bcf0fa | 1996 | { |
7bfda7eb | 1997 | if (mode & M6812_OP_D_IDX) |
60bcf0fa NC |
1998 | { |
1999 | if (op->reg1 != REG_D) | |
2000 | as_bad (_("Expecting register D for indexed indirect mode.")); | |
2001 | if (move_insn) | |
2002 | as_bad (_("Indexed indirect mode is not allowed for movb/movw.")); | |
2003 | ||
2004 | byte = 0xE7; | |
2005 | } | |
2006 | else | |
2007 | { | |
2008 | switch (op->reg1) | |
2009 | { | |
2010 | case REG_A: | |
2011 | byte = 0xE4; | |
2012 | break; | |
2013 | ||
2014 | case REG_B: | |
2015 | byte = 0xE5; | |
2016 | break; | |
2017 | ||
2018 | default: | |
2019 | as_bad (_("Invalid accumulator register.")); | |
2020 | ||
2021 | case REG_D: | |
2022 | byte = 0xE6; | |
2023 | break; | |
2024 | } | |
2025 | } | |
2026 | switch (op->reg2) | |
2027 | { | |
2028 | case REG_X: | |
2029 | break; | |
2030 | ||
2031 | case REG_Y: | |
2032 | byte |= (1 << 3); | |
2033 | break; | |
2034 | ||
2035 | case REG_SP: | |
2036 | byte |= (2 << 3); | |
2037 | break; | |
2038 | ||
2039 | case REG_PC: | |
2040 | byte |= (3 << 3); | |
2041 | break; | |
2042 | ||
2043 | default: | |
2044 | as_bad (_("Invalid indexed register.")); | |
2045 | break; | |
2046 | } | |
2047 | f = frag_more (1); | |
2048 | number_to_chars_bigendian (f, byte, 1); | |
2049 | return 1; | |
2050 | } | |
2051 | ||
2052 | as_fatal (_("Addressing mode not implemented yet.")); | |
2053 | return 0; | |
2054 | } | |
2055 | ||
2056 | /* Assemble the 68HC12 register mode byte. */ | |
2057 | static int | |
ca43c854 | 2058 | build_reg_mode (operand *op, int format) |
60bcf0fa NC |
2059 | { |
2060 | unsigned char byte; | |
2061 | char *f; | |
2062 | ||
2063 | if (format & M6812_OP_SEX_MARKER | |
2064 | && op->reg1 != REG_A && op->reg1 != REG_B && op->reg1 != REG_CCR) | |
2065 | as_bad (_("Invalid source register for this instruction, use 'tfr'.")); | |
2066 | else if (op->reg1 == REG_NONE || op->reg1 == REG_PC) | |
2067 | as_bad (_("Invalid source register.")); | |
2068 | ||
2069 | if (format & M6812_OP_SEX_MARKER | |
2070 | && op->reg2 != REG_D | |
2071 | && op->reg2 != REG_X && op->reg2 != REG_Y && op->reg2 != REG_SP) | |
2072 | as_bad (_("Invalid destination register for this instruction, use 'tfr'.")); | |
2073 | else if (op->reg2 == REG_NONE || op->reg2 == REG_PC) | |
2074 | as_bad (_("Invalid destination register.")); | |
2075 | ||
2076 | byte = (op->reg1 << 4) | (op->reg2); | |
2077 | if (format & M6812_OP_EXG_MARKER) | |
2078 | byte |= 0x80; | |
2079 | ||
2080 | f = frag_more (1); | |
2081 | number_to_chars_bigendian (f, byte, 1); | |
2082 | return 1; | |
2083 | } | |
2084 | ||
2085 | /* build_insn takes a pointer to the opcode entry in the opcode table, | |
67c1ffbe | 2086 | the array of operand expressions and builds the corresponding instruction. |
60bcf0fa NC |
2087 | This operation only deals with non relative jumps insn (need special |
2088 | handling). */ | |
2089 | static void | |
ca43c854 SC |
2090 | build_insn (struct m68hc11_opcode *opcode, operand operands[], |
2091 | int nb_operands ATTRIBUTE_UNUSED) | |
60bcf0fa NC |
2092 | { |
2093 | int i; | |
2094 | char *f; | |
60bcf0fa NC |
2095 | long format; |
2096 | int move_insn = 0; | |
2097 | ||
2098 | /* Put the page code instruction if there is one. */ | |
2099 | format = opcode->format; | |
e371935f | 2100 | |
e371935f | 2101 | if (format & M6811_OP_BRANCH) |
c9e03e8b | 2102 | fix_new (frag_now, frag_now_fix (), 1, |
e371935f SC |
2103 | &abs_symbol, 0, 1, BFD_RELOC_M68HC11_RL_JUMP); |
2104 | ||
60bcf0fa NC |
2105 | if (format & OP_EXTENDED) |
2106 | { | |
2107 | int page_code; | |
2108 | ||
2109 | f = m68hc11_new_insn (2); | |
2110 | if (format & M6811_OP_PAGE2) | |
2111 | page_code = M6811_OPCODE_PAGE2; | |
2112 | else if (format & M6811_OP_PAGE3) | |
2113 | page_code = M6811_OPCODE_PAGE3; | |
2114 | else | |
2115 | page_code = M6811_OPCODE_PAGE4; | |
2116 | ||
2117 | number_to_chars_bigendian (f, page_code, 1); | |
2118 | f++; | |
60bcf0fa NC |
2119 | } |
2120 | else | |
2121 | f = m68hc11_new_insn (1); | |
2122 | ||
2123 | number_to_chars_bigendian (f, opcode->opcode, 1); | |
2124 | ||
2125 | i = 0; | |
2126 | ||
2127 | /* The 68HC12 movb and movw instructions are special. We have to handle | |
2128 | them in a special way. */ | |
2129 | if (format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2)) | |
2130 | { | |
2131 | move_insn = 1; | |
2132 | if (format & M6812_OP_IDX) | |
2133 | { | |
986c6f4b | 2134 | build_indexed_byte (&operands[0], format, 1); |
60bcf0fa NC |
2135 | i = 1; |
2136 | format &= ~M6812_OP_IDX; | |
2137 | } | |
2138 | if (format & M6812_OP_IDX_P2) | |
2139 | { | |
986c6f4b | 2140 | build_indexed_byte (&operands[1], format, 1); |
60bcf0fa NC |
2141 | i = 0; |
2142 | format &= ~M6812_OP_IDX_P2; | |
2143 | } | |
2144 | } | |
2145 | ||
2146 | if (format & (M6811_OP_DIRECT | M6811_OP_IMM8)) | |
2147 | { | |
60bcf0fa NC |
2148 | fixup8 (&operands[i].exp, |
2149 | format & (M6811_OP_DIRECT | M6811_OP_IMM8 | M6812_OP_TRAP_ID), | |
2150 | operands[i].mode); | |
2151 | i++; | |
2152 | } | |
7bfda7eb SC |
2153 | else if (IS_CALL_SYMBOL (format) && nb_operands == 1) |
2154 | { | |
2155 | format &= ~M6812_OP_PAGE; | |
2156 | fixup24 (&operands[i].exp, format & M6811_OP_IND16, | |
2157 | operands[i].mode); | |
2158 | i++; | |
2159 | } | |
60bcf0fa NC |
2160 | else if (format & (M6811_OP_IMM16 | M6811_OP_IND16)) |
2161 | { | |
7bfda7eb SC |
2162 | fixup16 (&operands[i].exp, |
2163 | format & (M6811_OP_IMM16 | M6811_OP_IND16 | M6812_OP_PAGE), | |
60bcf0fa NC |
2164 | operands[i].mode); |
2165 | i++; | |
2166 | } | |
2167 | else if (format & (M6811_OP_IX | M6811_OP_IY)) | |
2168 | { | |
2169 | if ((format & M6811_OP_IX) && (operands[0].reg1 != REG_X)) | |
2170 | as_bad (_("Invalid indexed register, expecting register X.")); | |
2171 | if ((format & M6811_OP_IY) && (operands[0].reg1 != REG_Y)) | |
2172 | as_bad (_("Invalid indexed register, expecting register Y.")); | |
2173 | ||
60bcf0fa NC |
2174 | fixup8 (&operands[0].exp, M6811_OP_IX, operands[0].mode); |
2175 | i = 1; | |
2176 | } | |
2177 | else if (format & | |
7bfda7eb SC |
2178 | (M6812_OP_IDX | M6812_OP_IDX_2 | M6812_OP_IDX_1 |
2179 | | M6812_OP_D_IDX | M6812_OP_D_IDX_2)) | |
60bcf0fa | 2180 | { |
986c6f4b | 2181 | build_indexed_byte (&operands[i], format, move_insn); |
60bcf0fa NC |
2182 | i++; |
2183 | } | |
2184 | else if (format & M6812_OP_REG && current_architecture & cpu6812) | |
2185 | { | |
986c6f4b | 2186 | build_reg_mode (&operands[i], format); |
60bcf0fa NC |
2187 | i++; |
2188 | } | |
2189 | if (format & M6811_OP_BITMASK) | |
2190 | { | |
60bcf0fa NC |
2191 | fixup8 (&operands[i].exp, M6811_OP_BITMASK, operands[i].mode); |
2192 | i++; | |
2193 | } | |
2194 | if (format & M6811_OP_JUMP_REL) | |
2195 | { | |
60bcf0fa | 2196 | fixup8 (&operands[i].exp, M6811_OP_JUMP_REL, operands[i].mode); |
60bcf0fa NC |
2197 | } |
2198 | else if (format & M6812_OP_IND16_P2) | |
2199 | { | |
60bcf0fa NC |
2200 | fixup16 (&operands[1].exp, M6811_OP_IND16, operands[1].mode); |
2201 | } | |
7bfda7eb SC |
2202 | if (format & M6812_OP_PAGE) |
2203 | { | |
2204 | fixup8 (&operands[i].exp, M6812_OP_PAGE, operands[i].mode); | |
2205 | } | |
60bcf0fa | 2206 | } |
60bcf0fa NC |
2207 | \f |
2208 | /* Opcode identification and operand analysis. */ | |
2209 | ||
2210 | /* find() gets a pointer to an entry in the opcode table. It must look at all | |
2211 | opcodes with the same name and use the operands to choose the correct | |
2212 | opcode. Returns the opcode pointer if there was a match and 0 if none. */ | |
2213 | static struct m68hc11_opcode * | |
ca43c854 | 2214 | find (struct m68hc11_opcode_def *opc, operand operands[], int nb_operands) |
60bcf0fa NC |
2215 | { |
2216 | int i, match, pos; | |
2217 | struct m68hc11_opcode *opcode; | |
2218 | struct m68hc11_opcode *op_indirect; | |
2219 | ||
2220 | op_indirect = 0; | |
2221 | opcode = opc->opcode; | |
2222 | ||
2223 | /* Now search the opcode table table for one with operands | |
2224 | that matches what we've got. We're only done if the operands matched so | |
2225 | far AND there are no more to check. */ | |
2226 | for (pos = match = 0; match == 0 && pos < opc->nb_modes; pos++, opcode++) | |
2227 | { | |
2228 | int poss_indirect = 0; | |
2229 | long format = opcode->format; | |
2230 | int expect; | |
2231 | ||
2232 | expect = 0; | |
2233 | if (opcode->format & M6811_OP_MASK) | |
2234 | expect++; | |
2235 | if (opcode->format & M6811_OP_BITMASK) | |
2236 | expect++; | |
2237 | if (opcode->format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2238 | expect++; | |
2239 | if (opcode->format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2)) | |
2240 | expect++; | |
7bfda7eb SC |
2241 | if ((opcode->format & M6812_OP_PAGE) |
2242 | && (!IS_CALL_SYMBOL (opcode->format) || nb_operands == 2)) | |
2243 | expect++; | |
60bcf0fa NC |
2244 | |
2245 | for (i = 0; expect == nb_operands && i < nb_operands; i++) | |
2246 | { | |
2247 | int mode = operands[i].mode; | |
2248 | ||
2249 | if (mode & M6811_OP_IMM16) | |
2250 | { | |
2251 | if (format & | |
2252 | (M6811_OP_IMM8 | M6811_OP_IMM16 | M6811_OP_BITMASK)) | |
2253 | continue; | |
2254 | break; | |
2255 | } | |
2256 | if (mode == M6811_OP_DIRECT) | |
2257 | { | |
2258 | if (format & M6811_OP_DIRECT) | |
2259 | continue; | |
2260 | ||
2261 | /* If the operand is a page 0 operand, remember a | |
2262 | possible <abs-16> addressing mode. We mark | |
2263 | this and continue to check other operands. */ | |
2264 | if (format & M6811_OP_IND16 | |
2265 | && flag_strict_direct_addressing && op_indirect == 0) | |
2266 | { | |
2267 | poss_indirect = 1; | |
2268 | continue; | |
2269 | } | |
2270 | break; | |
2271 | } | |
2272 | if (mode & M6811_OP_IND16) | |
2273 | { | |
2274 | if (i == 0 && (format & M6811_OP_IND16) != 0) | |
2275 | continue; | |
7bfda7eb SC |
2276 | if (i != 0 && (format & M6812_OP_PAGE) != 0) |
2277 | continue; | |
60bcf0fa NC |
2278 | if (i != 0 && (format & M6812_OP_IND16_P2) != 0) |
2279 | continue; | |
2280 | if (i == 0 && (format & M6811_OP_BITMASK)) | |
2281 | break; | |
2282 | } | |
2283 | if (mode & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2284 | { | |
2285 | if (format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2286 | continue; | |
2287 | } | |
2288 | if (mode & M6812_OP_REG) | |
2289 | { | |
df86943d NC |
2290 | if (i == 0 |
2291 | && (format & M6812_OP_REG) | |
2292 | && (operands[i].reg2 == REG_NONE)) | |
60bcf0fa | 2293 | continue; |
df86943d NC |
2294 | if (i == 0 |
2295 | && (format & M6812_OP_REG) | |
2296 | && (format & M6812_OP_REG_2) | |
2297 | && (operands[i].reg2 != REG_NONE)) | |
60bcf0fa | 2298 | continue; |
df86943d NC |
2299 | if (i == 0 |
2300 | && (format & M6812_OP_IDX) | |
2301 | && (operands[i].reg2 != REG_NONE)) | |
2302 | continue; | |
df86943d NC |
2303 | if (i == 0 |
2304 | && (format & M6812_OP_IDX) | |
60bcf0fa NC |
2305 | && (format & (M6812_OP_IND16_P2 | M6812_OP_IDX_P2))) |
2306 | continue; | |
df86943d NC |
2307 | if (i == 1 |
2308 | && (format & M6812_OP_IDX_P2)) | |
60bcf0fa NC |
2309 | continue; |
2310 | break; | |
2311 | } | |
2312 | if (mode & M6812_OP_IDX) | |
2313 | { | |
2314 | if (format & M6811_OP_IX && operands[i].reg1 == REG_X) | |
2315 | continue; | |
2316 | if (format & M6811_OP_IY && operands[i].reg1 == REG_Y) | |
2317 | continue; | |
2318 | if (i == 0 | |
2319 | && format & (M6812_OP_IDX | M6812_OP_IDX_1 | M6812_OP_IDX_2) | |
2320 | && (operands[i].reg1 == REG_X | |
2321 | || operands[i].reg1 == REG_Y | |
2322 | || operands[i].reg1 == REG_SP | |
2323 | || operands[i].reg1 == REG_PC)) | |
2324 | continue; | |
2325 | if (i == 1 && format & M6812_OP_IDX_P2) | |
2326 | continue; | |
2327 | } | |
7bfda7eb SC |
2328 | if (mode & format & (M6812_OP_D_IDX | M6812_OP_D_IDX_2)) |
2329 | { | |
2330 | if (i == 0) | |
2331 | continue; | |
2332 | } | |
60bcf0fa NC |
2333 | if (mode & M6812_AUTO_INC_DEC) |
2334 | { | |
2335 | if (i == 0 | |
2336 | && format & (M6812_OP_IDX | M6812_OP_IDX_1 | | |
2337 | M6812_OP_IDX_2)) | |
2338 | continue; | |
2339 | if (i == 1 && format & M6812_OP_IDX_P2) | |
2340 | continue; | |
2341 | } | |
2342 | break; | |
2343 | } | |
2344 | match = i == nb_operands; | |
2345 | ||
2346 | /* Operands are ok but an operand uses page 0 addressing mode | |
2347 | while the insn supports abs-16 mode. Keep a reference to this | |
2348 | insns in case there is no insn supporting page 0 addressing. */ | |
2349 | if (match && poss_indirect) | |
2350 | { | |
2351 | op_indirect = opcode; | |
2352 | match = 0; | |
2353 | } | |
2354 | if (match) | |
2355 | break; | |
2356 | } | |
2357 | ||
2358 | /* Page 0 addressing is used but not supported by any insn. | |
2359 | If absolute addresses are supported, we use that insn. */ | |
2360 | if (match == 0 && op_indirect) | |
2361 | { | |
2362 | opcode = op_indirect; | |
2363 | match = 1; | |
2364 | } | |
2365 | ||
2366 | if (!match) | |
2367 | { | |
2368 | return (0); | |
2369 | } | |
2370 | ||
2371 | return opcode; | |
2372 | } | |
2373 | ||
60bcf0fa NC |
2374 | /* Find the real opcode and its associated operands. We use a progressive |
2375 | approach here. On entry, 'opc' points to the first opcode in the | |
2376 | table that matches the opcode name in the source line. We try to | |
2377 | isolate an operand, find a possible match in the opcode table. | |
2378 | We isolate another operand if no match were found. The table 'operands' | |
2379 | is filled while operands are recognized. | |
2380 | ||
2381 | Returns the opcode pointer that matches the opcode name in the | |
2382 | source line and the associated operands. */ | |
2383 | static struct m68hc11_opcode * | |
ca43c854 SC |
2384 | find_opcode (struct m68hc11_opcode_def *opc, operand operands[], |
2385 | int *nb_operands) | |
60bcf0fa NC |
2386 | { |
2387 | struct m68hc11_opcode *opcode; | |
2388 | int i; | |
2389 | ||
2390 | if (opc->max_operands == 0) | |
2391 | { | |
2392 | *nb_operands = 0; | |
2393 | return opc->opcode; | |
2394 | } | |
2395 | ||
2396 | for (i = 0; i < opc->max_operands;) | |
2397 | { | |
2398 | int result; | |
2399 | ||
2400 | result = get_operand (&operands[i], i, opc->format); | |
2401 | if (result <= 0) | |
fafb6d17 | 2402 | return 0; |
60bcf0fa NC |
2403 | |
2404 | /* Special case where the bitmask of the bclr/brclr | |
2405 | instructions is not introduced by #. | |
2406 | Example: bclr 3,x $80. */ | |
2407 | if (i == 1 && (opc->format & M6811_OP_BITMASK) | |
2408 | && (operands[i].mode & M6811_OP_IND16)) | |
2409 | { | |
2410 | operands[i].mode = M6811_OP_IMM16; | |
2411 | } | |
2412 | ||
2413 | i += result; | |
2414 | *nb_operands = i; | |
2415 | if (i >= opc->min_operands) | |
2416 | { | |
2417 | opcode = find (opc, operands, i); | |
577300ce SC |
2418 | |
2419 | /* Another special case for 'call foo,page' instructions. | |
2420 | Since we support 'call foo' and 'call foo,page' we must look | |
2421 | if the optional page specification is present otherwise we will | |
2422 | assemble immediately and treat the page spec as garbage. */ | |
7bfda7eb SC |
2423 | if (opcode && !(opcode->format & M6812_OP_PAGE)) |
2424 | return opcode; | |
2425 | ||
2426 | if (opcode && *input_line_pointer != ',') | |
fafb6d17 | 2427 | return opcode; |
60bcf0fa NC |
2428 | } |
2429 | ||
2430 | if (*input_line_pointer == ',') | |
2431 | input_line_pointer++; | |
2432 | } | |
82efde3a | 2433 | |
60bcf0fa NC |
2434 | return 0; |
2435 | } | |
2436 | ||
2437 | #define M6812_XBCC_MARKER (M6812_OP_TBCC_MARKER \ | |
2438 | | M6812_OP_DBCC_MARKER \ | |
2439 | | M6812_OP_IBCC_MARKER) | |
60bcf0fa NC |
2440 | \f |
2441 | /* Gas line assembler entry point. */ | |
2442 | ||
2443 | /* This is the main entry point for the machine-dependent assembler. str | |
2444 | points to a machine-dependent instruction. This function is supposed to | |
2445 | emit the frags/bytes it assembles to. */ | |
2446 | void | |
ca43c854 | 2447 | md_assemble (char *str) |
60bcf0fa NC |
2448 | { |
2449 | struct m68hc11_opcode_def *opc; | |
2450 | struct m68hc11_opcode *opcode; | |
2451 | ||
2452 | unsigned char *op_start, *save; | |
2453 | unsigned char *op_end; | |
2454 | char name[20]; | |
2455 | int nlen = 0; | |
2456 | operand operands[M6811_MAX_OPERANDS]; | |
2457 | int nb_operands; | |
2458 | int branch_optimize = 0; | |
2459 | int alias_id = -1; | |
2460 | ||
fafb6d17 | 2461 | /* Drop leading whitespace. */ |
60bcf0fa NC |
2462 | while (*str == ' ') |
2463 | str++; | |
2464 | ||
2465 | /* Find the opcode end and get the opcode in 'name'. The opcode is forced | |
2466 | lower case (the opcode table only has lower case op-codes). */ | |
2467 | for (op_start = op_end = (unsigned char *) (str); | |
2468 | *op_end && nlen < 20 && !is_end_of_line[*op_end] && *op_end != ' '; | |
2469 | op_end++) | |
2470 | { | |
3882b010 | 2471 | name[nlen] = TOLOWER (op_start[nlen]); |
60bcf0fa NC |
2472 | nlen++; |
2473 | } | |
2474 | name[nlen] = 0; | |
2475 | ||
2476 | if (nlen == 0) | |
2477 | { | |
2478 | as_bad (_("No instruction or missing opcode.")); | |
2479 | return; | |
2480 | } | |
2481 | ||
2482 | /* Find the opcode definition given its name. */ | |
2483 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, name); | |
2484 | ||
2485 | /* If it's not recognized, look for 'jbsr' and 'jbxx'. These are | |
2486 | pseudo insns for relative branch. For these branchs, we always | |
2487 | optimize them (turned into absolute branchs) even if --short-branchs | |
2488 | is given. */ | |
2489 | if (opc == NULL && name[0] == 'j' && name[1] == 'b') | |
2490 | { | |
2491 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, &name[1]); | |
2492 | if (opc | |
2493 | && (!(opc->format & M6811_OP_JUMP_REL) | |
2494 | || (opc->format & M6811_OP_BITMASK))) | |
2495 | opc = 0; | |
2496 | if (opc) | |
2497 | branch_optimize = 1; | |
2498 | } | |
2499 | ||
2500 | /* The following test should probably be removed. This is not conform | |
2501 | to Motorola assembler specs. */ | |
2502 | if (opc == NULL && flag_mri) | |
2503 | { | |
2504 | if (*op_end == ' ' || *op_end == '\t') | |
2505 | { | |
2506 | while (*op_end == ' ' || *op_end == '\t') | |
2507 | op_end++; | |
2508 | ||
2509 | if (nlen < 19 | |
2510 | && (*op_end && | |
2511 | (is_end_of_line[op_end[1]] | |
2512 | || op_end[1] == ' ' || op_end[1] == '\t' | |
3882b010 | 2513 | || !ISALNUM (op_end[1]))) |
60bcf0fa NC |
2514 | && (*op_end == 'a' || *op_end == 'b' |
2515 | || *op_end == 'A' || *op_end == 'B' | |
2516 | || *op_end == 'd' || *op_end == 'D' | |
2517 | || *op_end == 'x' || *op_end == 'X' | |
2518 | || *op_end == 'y' || *op_end == 'Y')) | |
2519 | { | |
3882b010 | 2520 | name[nlen++] = TOLOWER (*op_end++); |
60bcf0fa NC |
2521 | name[nlen] = 0; |
2522 | opc = (struct m68hc11_opcode_def *) hash_find (m68hc11_hash, | |
2523 | name); | |
2524 | } | |
2525 | } | |
2526 | } | |
2527 | ||
2528 | /* Identify a possible instruction alias. There are some on the | |
986c6f4b | 2529 | 68HC12 to emulate a few 68HC11 instructions. */ |
60bcf0fa NC |
2530 | if (opc == NULL && (current_architecture & cpu6812)) |
2531 | { | |
2532 | int i; | |
2533 | ||
2534 | for (i = 0; i < m68hc12_num_alias; i++) | |
2535 | if (strcmp (m68hc12_alias[i].name, name) == 0) | |
2536 | { | |
2537 | alias_id = i; | |
2538 | break; | |
2539 | } | |
2540 | } | |
2541 | if (opc == NULL && alias_id < 0) | |
2542 | { | |
2543 | as_bad (_("Opcode `%s' is not recognized."), name); | |
2544 | return; | |
2545 | } | |
2546 | save = input_line_pointer; | |
2547 | input_line_pointer = op_end; | |
2548 | ||
2549 | if (opc) | |
2550 | { | |
2551 | opc->used++; | |
2552 | opcode = find_opcode (opc, operands, &nb_operands); | |
2553 | } | |
2554 | else | |
2555 | opcode = 0; | |
2556 | ||
2557 | if ((opcode || alias_id >= 0) && !flag_mri) | |
2558 | { | |
2559 | char *p = input_line_pointer; | |
2560 | ||
2561 | while (*p == ' ' || *p == '\t' || *p == '\n' || *p == '\r') | |
2562 | p++; | |
2563 | ||
2564 | if (*p != '\n' && *p) | |
2565 | as_bad (_("Garbage at end of instruction: `%s'."), p); | |
2566 | } | |
2567 | ||
2568 | input_line_pointer = save; | |
2569 | ||
2570 | if (alias_id >= 0) | |
2571 | { | |
2572 | char *f = m68hc11_new_insn (m68hc12_alias[alias_id].size); | |
fafb6d17 | 2573 | |
60bcf0fa NC |
2574 | number_to_chars_bigendian (f, m68hc12_alias[alias_id].code1, 1); |
2575 | if (m68hc12_alias[alias_id].size > 1) | |
2576 | number_to_chars_bigendian (f + 1, m68hc12_alias[alias_id].code2, 1); | |
2577 | ||
2578 | return; | |
2579 | } | |
2580 | ||
2581 | /* Opcode is known but does not have valid operands. Print out the | |
2582 | syntax for this opcode. */ | |
2583 | if (opcode == 0) | |
2584 | { | |
2585 | if (flag_print_insn_syntax) | |
2586 | print_insn_format (name); | |
2587 | ||
2588 | as_bad (_("Invalid operand for `%s'"), name); | |
2589 | return; | |
2590 | } | |
2591 | ||
2592 | /* Treat dbeq/ibeq/tbeq instructions in a special way. The branch is | |
2593 | relative and must be in the range -256..255 (9-bits). */ | |
2594 | if ((opcode->format & M6812_XBCC_MARKER) | |
2595 | && (opcode->format & M6811_OP_JUMP_REL)) | |
27302d63 | 2596 | build_dbranch_insn (opcode, operands, nb_operands, branch_optimize); |
60bcf0fa NC |
2597 | |
2598 | /* Relative jumps instructions are taken care of separately. We have to make | |
2599 | sure that the relative branch is within the range -128..127. If it's out | |
2600 | of range, the instructions are changed into absolute instructions. | |
2601 | This is not supported for the brset and brclr instructions. */ | |
2602 | else if ((opcode->format & (M6811_OP_JUMP_REL | M6812_OP_JUMP_REL16)) | |
2603 | && !(opcode->format & M6811_OP_BITMASK)) | |
2604 | build_jump_insn (opcode, operands, nb_operands, branch_optimize); | |
2605 | else | |
2606 | build_insn (opcode, operands, nb_operands); | |
2607 | } | |
eb086b59 SC |
2608 | |
2609 | \f | |
2610 | /* Pseudo op to control the ELF flags. */ | |
2611 | static void | |
ca43c854 | 2612 | s_m68hc11_mode (int x ATTRIBUTE_UNUSED) |
eb086b59 SC |
2613 | { |
2614 | char *name = input_line_pointer, ch; | |
2615 | ||
2616 | while (!is_end_of_line[(unsigned char) *input_line_pointer]) | |
2617 | input_line_pointer++; | |
2618 | ch = *input_line_pointer; | |
2619 | *input_line_pointer = '\0'; | |
2620 | ||
2621 | if (strcmp (name, "mshort") == 0) | |
2622 | { | |
2623 | elf_flags &= ~E_M68HC11_I32; | |
2624 | } | |
2625 | else if (strcmp (name, "mlong") == 0) | |
2626 | { | |
2627 | elf_flags |= E_M68HC11_I32; | |
2628 | } | |
2629 | else if (strcmp (name, "mshort-double") == 0) | |
2630 | { | |
2631 | elf_flags &= ~E_M68HC11_F64; | |
2632 | } | |
2633 | else if (strcmp (name, "mlong-double") == 0) | |
2634 | { | |
2635 | elf_flags |= E_M68HC11_F64; | |
2636 | } | |
2637 | else | |
2638 | { | |
2639 | as_warn (_("Invalid mode: %s\n"), name); | |
2640 | } | |
2641 | *input_line_pointer = ch; | |
2642 | demand_empty_rest_of_line (); | |
2643 | } | |
2644 | ||
2645 | /* Mark the symbols with STO_M68HC12_FAR to indicate the functions | |
2646 | are using 'rtc' for returning. It is necessary to use 'call' | |
2647 | to invoke them. This is also used by the debugger to correctly | |
2648 | find the stack frame. */ | |
2649 | static void | |
ca43c854 | 2650 | s_m68hc11_mark_symbol (int mark) |
eb086b59 SC |
2651 | { |
2652 | char *name; | |
2653 | int c; | |
2654 | symbolS *symbolP; | |
2655 | asymbol *bfdsym; | |
2656 | elf_symbol_type *elfsym; | |
2657 | ||
2658 | do | |
2659 | { | |
2660 | name = input_line_pointer; | |
2661 | c = get_symbol_end (); | |
2662 | symbolP = symbol_find_or_make (name); | |
2663 | *input_line_pointer = c; | |
2664 | ||
2665 | SKIP_WHITESPACE (); | |
2666 | ||
2667 | bfdsym = symbol_get_bfdsym (symbolP); | |
2668 | elfsym = elf_symbol_from (bfd_asymbol_bfd (bfdsym), bfdsym); | |
2669 | ||
2670 | assert (elfsym); | |
2671 | ||
2672 | /* Mark the symbol far (using rtc for function return). */ | |
2673 | elfsym->internal_elf_sym.st_other |= mark; | |
2674 | ||
2675 | if (c == ',') | |
2676 | { | |
2677 | input_line_pointer ++; | |
2678 | ||
2679 | SKIP_WHITESPACE (); | |
2680 | ||
2681 | if (*input_line_pointer == '\n') | |
2682 | c = '\n'; | |
2683 | } | |
2684 | } | |
2685 | while (c == ','); | |
2686 | ||
2687 | demand_empty_rest_of_line (); | |
2688 | } | |
e371935f SC |
2689 | |
2690 | static void | |
ca43c854 | 2691 | s_m68hc11_relax (int ignore ATTRIBUTE_UNUSED) |
e371935f SC |
2692 | { |
2693 | expressionS ex; | |
2694 | ||
2695 | expression (&ex); | |
2696 | ||
2697 | if (ex.X_op != O_symbol || ex.X_add_number != 0) | |
2698 | { | |
2699 | as_bad (_("bad .relax format")); | |
2700 | ignore_rest_of_line (); | |
2701 | return; | |
2702 | } | |
2703 | ||
12a99586 | 2704 | fix_new_exp (frag_now, frag_now_fix (), 2, &ex, 1, |
e371935f SC |
2705 | BFD_RELOC_M68HC11_RL_GROUP); |
2706 | ||
2707 | demand_empty_rest_of_line (); | |
2708 | } | |
2709 | ||
60bcf0fa NC |
2710 | \f |
2711 | /* Relocation, relaxation and frag conversions. */ | |
e371935f SC |
2712 | |
2713 | /* PC-relative offsets are relative to the start of the | |
2714 | next instruction. That is, the address of the offset, plus its | |
2715 | size, since the offset is always the last part of the insn. */ | |
60bcf0fa | 2716 | long |
ca43c854 | 2717 | md_pcrel_from (fixS *fixP) |
60bcf0fa | 2718 | { |
e371935f | 2719 | if (fixP->fx_r_type == BFD_RELOC_M68HC11_RL_JUMP) |
60bcf0fa NC |
2720 | return 0; |
2721 | ||
e371935f | 2722 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
60bcf0fa NC |
2723 | } |
2724 | ||
2725 | /* If while processing a fixup, a reloc really needs to be created | |
2726 | then it is done here. */ | |
2727 | arelent * | |
ca43c854 | 2728 | tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp) |
60bcf0fa NC |
2729 | { |
2730 | arelent *reloc; | |
2731 | ||
2732 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
2733 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2734 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
2735 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2736 | if (fixp->fx_r_type == 0) | |
2737 | reloc->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_16); | |
2738 | else | |
2739 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
2740 | if (reloc->howto == (reloc_howto_type *) NULL) | |
2741 | { | |
2742 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
2743 | _("Relocation %d is not supported by object file format."), | |
2744 | (int) fixp->fx_r_type); | |
2745 | return NULL; | |
2746 | } | |
2747 | ||
a161fe53 AM |
2748 | /* Since we use Rel instead of Rela, encode the vtable entry to be |
2749 | used in the relocation's section offset. */ | |
2750 | if (fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY) | |
2751 | reloc->address = fixp->fx_offset; | |
2752 | ||
2753 | reloc->addend = 0; | |
60bcf0fa NC |
2754 | return reloc; |
2755 | } | |
2756 | ||
c9e03e8b SC |
2757 | /* We need a port-specific relaxation function to cope with sym2 - sym1 |
2758 | relative expressions with both symbols in the same segment (but not | |
2759 | necessarily in the same frag as this insn), for example: | |
2760 | ldab sym2-(sym1-2),pc | |
2761 | sym1: | |
2762 | The offset can be 5, 9 or 16 bits long. */ | |
2763 | ||
2764 | long | |
ca43c854 SC |
2765 | m68hc11_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS *fragP, |
2766 | long stretch ATTRIBUTE_UNUSED) | |
c9e03e8b SC |
2767 | { |
2768 | long growth; | |
2769 | offsetT aim = 0; | |
2770 | symbolS *symbolP; | |
2771 | const relax_typeS *this_type; | |
2772 | const relax_typeS *start_type; | |
2773 | relax_substateT next_state; | |
2774 | relax_substateT this_state; | |
2775 | const relax_typeS *table = TC_GENERIC_RELAX_TABLE; | |
2776 | ||
2777 | /* We only have to cope with frags as prepared by | |
2778 | md_estimate_size_before_relax. The STATE_BITS16 case may geet here | |
2779 | because of the different reasons that it's not relaxable. */ | |
2780 | switch (fragP->fr_subtype) | |
2781 | { | |
75538612 | 2782 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS16): |
c9e03e8b SC |
2783 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS16): |
2784 | /* When we get to this state, the frag won't grow any more. */ | |
2785 | return 0; | |
2786 | ||
75538612 | 2787 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS5): |
c9e03e8b | 2788 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS5): |
75538612 | 2789 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS9): |
c9e03e8b SC |
2790 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS9): |
2791 | if (fragP->fr_symbol == NULL | |
2792 | || S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) | |
2793 | as_fatal (_("internal inconsistency problem in %s: fr_symbol %lx"), | |
2794 | __FUNCTION__, (long) fragP->fr_symbol); | |
2795 | symbolP = fragP->fr_symbol; | |
2796 | if (symbol_resolved_p (symbolP)) | |
2797 | as_fatal (_("internal inconsistency problem in %s: resolved symbol"), | |
2798 | __FUNCTION__); | |
2799 | aim = S_GET_VALUE (symbolP); | |
2800 | break; | |
2801 | ||
2802 | default: | |
2803 | as_fatal (_("internal inconsistency problem in %s: fr_subtype %d"), | |
2804 | __FUNCTION__, fragP->fr_subtype); | |
2805 | } | |
2806 | ||
2807 | /* The rest is stolen from relax_frag. There's no obvious way to | |
2808 | share the code, but fortunately no requirement to keep in sync as | |
2809 | long as fragP->fr_symbol does not have its segment changed. */ | |
2810 | ||
2811 | this_state = fragP->fr_subtype; | |
2812 | start_type = this_type = table + this_state; | |
2813 | ||
2814 | if (aim < 0) | |
2815 | { | |
2816 | /* Look backwards. */ | |
2817 | for (next_state = this_type->rlx_more; next_state;) | |
2818 | if (aim >= this_type->rlx_backward) | |
2819 | next_state = 0; | |
2820 | else | |
2821 | { | |
2822 | /* Grow to next state. */ | |
2823 | this_state = next_state; | |
2824 | this_type = table + this_state; | |
2825 | next_state = this_type->rlx_more; | |
2826 | } | |
2827 | } | |
2828 | else | |
2829 | { | |
2830 | /* Look forwards. */ | |
2831 | for (next_state = this_type->rlx_more; next_state;) | |
2832 | if (aim <= this_type->rlx_forward) | |
2833 | next_state = 0; | |
2834 | else | |
2835 | { | |
2836 | /* Grow to next state. */ | |
2837 | this_state = next_state; | |
2838 | this_type = table + this_state; | |
2839 | next_state = this_type->rlx_more; | |
2840 | } | |
2841 | } | |
2842 | ||
2843 | growth = this_type->rlx_length - start_type->rlx_length; | |
2844 | if (growth != 0) | |
2845 | fragP->fr_subtype = this_state; | |
2846 | return growth; | |
2847 | } | |
2848 | ||
60bcf0fa | 2849 | void |
ca43c854 SC |
2850 | md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED, asection *sec ATTRIBUTE_UNUSED, |
2851 | fragS *fragP) | |
60bcf0fa NC |
2852 | { |
2853 | fixS *fixp; | |
88051039 | 2854 | long value; |
60bcf0fa NC |
2855 | long disp; |
2856 | char *buffer_address = fragP->fr_literal; | |
2857 | ||
2858 | /* Address in object code of the displacement. */ | |
2859 | register int object_address = fragP->fr_fix + fragP->fr_address; | |
2860 | ||
2861 | buffer_address += fragP->fr_fix; | |
2862 | ||
2863 | /* The displacement of the address, from current location. */ | |
ac62c346 | 2864 | value = S_GET_VALUE (fragP->fr_symbol); |
88051039 | 2865 | disp = (value + fragP->fr_offset) - object_address; |
60bcf0fa NC |
2866 | |
2867 | switch (fragP->fr_subtype) | |
2868 | { | |
2869 | case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE): | |
2870 | fragP->fr_opcode[1] = disp; | |
2871 | break; | |
2872 | ||
2873 | case ENCODE_RELAX (STATE_PC_RELATIVE, STATE_WORD): | |
2874 | /* This relax is only for bsr and bra. */ | |
2875 | assert (IS_OPCODE (fragP->fr_opcode[0], M6811_BSR) | |
2876 | || IS_OPCODE (fragP->fr_opcode[0], M6811_BRA) | |
2877 | || IS_OPCODE (fragP->fr_opcode[0], M6812_BSR)); | |
2878 | ||
2879 | fragP->fr_opcode[0] = convert_branch (fragP->fr_opcode[0]); | |
2880 | ||
2881 | fix_new (fragP, fragP->fr_fix - 1, 2, | |
2882 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
2883 | fragP->fr_fix += 1; | |
2884 | break; | |
2885 | ||
2886 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_BYTE): | |
2887 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_BYTE): | |
2888 | fragP->fr_opcode[1] = disp; | |
2889 | break; | |
2890 | ||
2891 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, STATE_WORD): | |
2892 | /* Invert branch. */ | |
2893 | fragP->fr_opcode[0] ^= 1; | |
fafb6d17 | 2894 | fragP->fr_opcode[1] = 3; /* Branch offset. */ |
60bcf0fa NC |
2895 | buffer_address[0] = M6811_JMP; |
2896 | fix_new (fragP, fragP->fr_fix + 1, 2, | |
2897 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
2898 | fragP->fr_fix += 3; | |
2899 | break; | |
2900 | ||
2901 | case ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, STATE_WORD): | |
2902 | /* Translate branch into a long branch. */ | |
2903 | fragP->fr_opcode[1] = fragP->fr_opcode[0]; | |
2904 | fragP->fr_opcode[0] = M6811_OPCODE_PAGE2; | |
2905 | ||
2906 | fixp = fix_new (fragP, fragP->fr_fix, 2, | |
2907 | fragP->fr_symbol, fragP->fr_offset, 1, | |
2908 | BFD_RELOC_16_PCREL); | |
2909 | fixp->fx_pcrel_adjust = 2; | |
2910 | fragP->fr_fix += 2; | |
2911 | break; | |
2912 | ||
75538612 SC |
2913 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS5): |
2914 | if (fragP->fr_symbol != 0 | |
c9e03e8b SC |
2915 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) |
2916 | value = disp; | |
75538612 SC |
2917 | /* fall through */ |
2918 | ||
2919 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS5): | |
88051039 | 2920 | fragP->fr_opcode[0] = fragP->fr_opcode[0] << 6; |
c9e03e8b | 2921 | fragP->fr_opcode[0] |= value & 0x1f; |
60bcf0fa NC |
2922 | break; |
2923 | ||
75538612 SC |
2924 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS9): |
2925 | /* For a PC-relative offset, use the displacement with a -1 correction | |
2926 | to take into account the additional byte of the insn. */ | |
2927 | if (fragP->fr_symbol != 0 | |
c9e03e8b | 2928 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) |
75538612 SC |
2929 | value = disp - 1; |
2930 | /* fall through */ | |
2931 | ||
2932 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS9): | |
60bcf0fa NC |
2933 | fragP->fr_opcode[0] = (fragP->fr_opcode[0] << 3); |
2934 | fragP->fr_opcode[0] |= 0xE0; | |
c9e03e8b SC |
2935 | fragP->fr_opcode[0] |= (value >> 8) & 1; |
2936 | fragP->fr_opcode[1] = value; | |
60bcf0fa NC |
2937 | fragP->fr_fix += 1; |
2938 | break; | |
2939 | ||
75538612 | 2940 | case ENCODE_RELAX (STATE_INDEXED_PCREL, STATE_BITS16): |
60bcf0fa NC |
2941 | case ENCODE_RELAX (STATE_INDEXED_OFFSET, STATE_BITS16): |
2942 | fragP->fr_opcode[0] = (fragP->fr_opcode[0] << 3); | |
88051039 | 2943 | fragP->fr_opcode[0] |= 0xe2; |
c9e03e8b SC |
2944 | if ((fragP->fr_opcode[0] & 0x0ff) == 0x0fa |
2945 | && fragP->fr_symbol != 0 | |
2946 | && S_GET_SEGMENT (fragP->fr_symbol) != absolute_section) | |
098f2ec3 KH |
2947 | { |
2948 | fixp = fix_new (fragP, fragP->fr_fix, 2, | |
2949 | fragP->fr_symbol, fragP->fr_offset, | |
2950 | 1, BFD_RELOC_16_PCREL); | |
098f2ec3 | 2951 | } |
88051039 | 2952 | else |
098f2ec3 KH |
2953 | { |
2954 | fix_new (fragP, fragP->fr_fix, 2, | |
2955 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
2956 | } | |
88051039 | 2957 | fragP->fr_fix += 2; |
60bcf0fa NC |
2958 | break; |
2959 | ||
2960 | case ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_BYTE): | |
2961 | if (disp < 0) | |
2962 | fragP->fr_opcode[0] |= 0x10; | |
2963 | ||
2964 | fragP->fr_opcode[1] = disp & 0x0FF; | |
2965 | break; | |
2966 | ||
2967 | case ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_WORD): | |
2968 | /* Invert branch. */ | |
2969 | fragP->fr_opcode[0] ^= 0x20; | |
2970 | fragP->fr_opcode[1] = 3; /* Branch offset. */ | |
2971 | buffer_address[0] = M6812_JMP; | |
2972 | fix_new (fragP, fragP->fr_fix + 1, 2, | |
2973 | fragP->fr_symbol, fragP->fr_offset, 0, BFD_RELOC_16); | |
2974 | fragP->fr_fix += 3; | |
2975 | break; | |
2976 | ||
2977 | default: | |
2978 | break; | |
2979 | } | |
2980 | } | |
2981 | ||
dbb8ad49 SC |
2982 | /* On an ELF system, we can't relax a weak symbol. The weak symbol |
2983 | can be overridden at final link time by a non weak symbol. We can | |
2984 | relax externally visible symbol because there is no shared library | |
2985 | and such symbol can't be overridden (unless they are weak). */ | |
d8273f3b | 2986 | static int |
ca43c854 | 2987 | relaxable_symbol (symbolS *symbol) |
d8273f3b | 2988 | { |
dbb8ad49 | 2989 | return ! S_IS_WEAK (symbol); |
d8273f3b SC |
2990 | } |
2991 | ||
60bcf0fa NC |
2992 | /* Force truly undefined symbols to their maximum size, and generally set up |
2993 | the frag list to be relaxed. */ | |
2994 | int | |
ca43c854 | 2995 | md_estimate_size_before_relax (fragS *fragP, asection *segment) |
60bcf0fa | 2996 | { |
606ab118 AM |
2997 | if (RELAX_LENGTH (fragP->fr_subtype) == STATE_UNDF) |
2998 | { | |
2999 | if (S_GET_SEGMENT (fragP->fr_symbol) != segment | |
577300ce SC |
3000 | || !relaxable_symbol (fragP->fr_symbol) |
3001 | || (segment != absolute_section | |
3002 | && RELAX_STATE (fragP->fr_subtype) == STATE_INDEXED_OFFSET)) | |
606ab118 AM |
3003 | { |
3004 | /* Non-relaxable cases. */ | |
3005 | int old_fr_fix; | |
3006 | char *buffer_address; | |
60bcf0fa | 3007 | |
606ab118 AM |
3008 | old_fr_fix = fragP->fr_fix; |
3009 | buffer_address = fragP->fr_fix + fragP->fr_literal; | |
60bcf0fa | 3010 | |
606ab118 AM |
3011 | switch (RELAX_STATE (fragP->fr_subtype)) |
3012 | { | |
3013 | case STATE_PC_RELATIVE: | |
3014 | ||
3015 | /* This relax is only for bsr and bra. */ | |
3016 | assert (IS_OPCODE (fragP->fr_opcode[0], M6811_BSR) | |
3017 | || IS_OPCODE (fragP->fr_opcode[0], M6811_BRA) | |
3018 | || IS_OPCODE (fragP->fr_opcode[0], M6812_BSR)); | |
3019 | ||
3020 | if (flag_fixed_branchs) | |
3021 | as_bad_where (fragP->fr_file, fragP->fr_line, | |
3022 | _("bra or bsr with undefined symbol.")); | |
3023 | ||
3024 | /* The symbol is undefined or in a separate section. | |
3025 | Turn bra into a jmp and bsr into a jsr. The insn | |
3026 | becomes 3 bytes long (instead of 2). A fixup is | |
3027 | necessary for the unresolved symbol address. */ | |
3028 | fragP->fr_opcode[0] = convert_branch (fragP->fr_opcode[0]); | |
3029 | ||
13283e2d | 3030 | fix_new (fragP, fragP->fr_fix - 1, 2, fragP->fr_symbol, |
606ab118 | 3031 | fragP->fr_offset, 0, BFD_RELOC_16); |
13283e2d | 3032 | fragP->fr_fix++; |
606ab118 | 3033 | break; |
60bcf0fa | 3034 | |
606ab118 AM |
3035 | case STATE_CONDITIONAL_BRANCH: |
3036 | assert (current_architecture & cpu6811); | |
60bcf0fa | 3037 | |
606ab118 AM |
3038 | fragP->fr_opcode[0] ^= 1; /* Reverse sense of branch. */ |
3039 | fragP->fr_opcode[1] = 3; /* Skip next jmp insn (3 bytes). */ | |
60bcf0fa | 3040 | |
606ab118 AM |
3041 | /* Don't use fr_opcode[2] because this may be |
3042 | in a different frag. */ | |
3043 | buffer_address[0] = M6811_JMP; | |
60bcf0fa | 3044 | |
606ab118 AM |
3045 | fragP->fr_fix++; |
3046 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
3047 | fragP->fr_offset, 0, BFD_RELOC_16); | |
3048 | fragP->fr_fix += 2; | |
3049 | break; | |
60bcf0fa | 3050 | |
606ab118 AM |
3051 | case STATE_INDEXED_OFFSET: |
3052 | assert (current_architecture & cpu6812); | |
60bcf0fa | 3053 | |
c9e03e8b SC |
3054 | if (fragP->fr_symbol |
3055 | && S_GET_SEGMENT (fragP->fr_symbol) == absolute_section) | |
3056 | { | |
3057 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_OFFSET, | |
3058 | STATE_BITS5); | |
3059 | /* Return the size of the variable part of the frag. */ | |
3060 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
3061 | } | |
3062 | else | |
3063 | { | |
3064 | /* Switch the indexed operation to 16-bit mode. */ | |
3065 | fragP->fr_opcode[0] = fragP->fr_opcode[0] << 3; | |
3066 | fragP->fr_opcode[0] |= 0xe2; | |
3067 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
3068 | fragP->fr_offset, 0, BFD_RELOC_16); | |
3069 | fragP->fr_fix += 2; | |
3070 | } | |
606ab118 | 3071 | break; |
60bcf0fa | 3072 | |
75538612 SC |
3073 | case STATE_INDEXED_PCREL: |
3074 | assert (current_architecture & cpu6812); | |
3075 | ||
3076 | if (fragP->fr_symbol | |
3077 | && S_GET_SEGMENT (fragP->fr_symbol) == absolute_section) | |
3078 | { | |
3079 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_PCREL, | |
3080 | STATE_BITS5); | |
3081 | /* Return the size of the variable part of the frag. */ | |
3082 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
3083 | } | |
3084 | else | |
3085 | { | |
3086 | fixS* fixp; | |
3087 | ||
3088 | fragP->fr_opcode[0] = fragP->fr_opcode[0] << 3; | |
3089 | fragP->fr_opcode[0] |= 0xe2; | |
3090 | fixp = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
3091 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); | |
3092 | fragP->fr_fix += 2; | |
3093 | } | |
3094 | break; | |
3095 | ||
606ab118 AM |
3096 | case STATE_XBCC_BRANCH: |
3097 | assert (current_architecture & cpu6812); | |
3098 | ||
3099 | fragP->fr_opcode[0] ^= 0x20; /* Reverse sense of branch. */ | |
3100 | fragP->fr_opcode[1] = 3; /* Skip next jmp insn (3 bytes). */ | |
60bcf0fa | 3101 | |
606ab118 AM |
3102 | /* Don't use fr_opcode[2] because this may be |
3103 | in a different frag. */ | |
3104 | buffer_address[0] = M6812_JMP; | |
3105 | ||
3106 | fragP->fr_fix++; | |
3107 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
3108 | fragP->fr_offset, 0, BFD_RELOC_16); | |
3109 | fragP->fr_fix += 2; | |
3110 | break; | |
60bcf0fa | 3111 | |
606ab118 AM |
3112 | case STATE_CONDITIONAL_BRANCH_6812: |
3113 | assert (current_architecture & cpu6812); | |
3114 | ||
3115 | /* Translate into a lbcc branch. */ | |
3116 | fragP->fr_opcode[1] = fragP->fr_opcode[0]; | |
3117 | fragP->fr_opcode[0] = M6811_OPCODE_PAGE2; | |
3118 | ||
3119 | fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, | |
e371935f | 3120 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); |
606ab118 AM |
3121 | fragP->fr_fix += 2; |
3122 | break; | |
3123 | ||
3124 | default: | |
3125 | as_fatal (_("Subtype %d is not recognized."), fragP->fr_subtype); | |
3126 | } | |
60bcf0fa | 3127 | frag_wane (fragP); |
60bcf0fa | 3128 | |
606ab118 AM |
3129 | /* Return the growth in the fixed part of the frag. */ |
3130 | return fragP->fr_fix - old_fr_fix; | |
3131 | } | |
60bcf0fa | 3132 | |
606ab118 AM |
3133 | /* Relaxable cases. */ |
3134 | switch (RELAX_STATE (fragP->fr_subtype)) | |
60bcf0fa | 3135 | { |
606ab118 AM |
3136 | case STATE_PC_RELATIVE: |
3137 | /* This relax is only for bsr and bra. */ | |
3138 | assert (IS_OPCODE (fragP->fr_opcode[0], M6811_BSR) | |
3139 | || IS_OPCODE (fragP->fr_opcode[0], M6811_BRA) | |
3140 | || IS_OPCODE (fragP->fr_opcode[0], M6812_BSR)); | |
3141 | ||
3142 | fragP->fr_subtype = ENCODE_RELAX (STATE_PC_RELATIVE, STATE_BYTE); | |
3143 | break; | |
3144 | ||
3145 | case STATE_CONDITIONAL_BRANCH: | |
3146 | assert (current_architecture & cpu6811); | |
3147 | ||
3148 | fragP->fr_subtype = ENCODE_RELAX (STATE_CONDITIONAL_BRANCH, | |
3149 | STATE_BYTE); | |
3150 | break; | |
3151 | ||
3152 | case STATE_INDEXED_OFFSET: | |
3153 | assert (current_architecture & cpu6812); | |
3154 | ||
60bcf0fa NC |
3155 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_OFFSET, |
3156 | STATE_BITS5); | |
606ab118 | 3157 | break; |
60bcf0fa | 3158 | |
75538612 SC |
3159 | case STATE_INDEXED_PCREL: |
3160 | assert (current_architecture & cpu6812); | |
3161 | ||
3162 | fragP->fr_subtype = ENCODE_RELAX (STATE_INDEXED_PCREL, | |
3163 | STATE_BITS5); | |
3164 | break; | |
3165 | ||
606ab118 AM |
3166 | case STATE_XBCC_BRANCH: |
3167 | assert (current_architecture & cpu6812); | |
60bcf0fa | 3168 | |
60bcf0fa | 3169 | fragP->fr_subtype = ENCODE_RELAX (STATE_XBCC_BRANCH, STATE_BYTE); |
606ab118 | 3170 | break; |
60bcf0fa | 3171 | |
606ab118 AM |
3172 | case STATE_CONDITIONAL_BRANCH_6812: |
3173 | assert (current_architecture & cpu6812); | |
60bcf0fa | 3174 | |
60bcf0fa NC |
3175 | fragP->fr_subtype = ENCODE_RELAX (STATE_CONDITIONAL_BRANCH_6812, |
3176 | STATE_BYTE); | |
606ab118 | 3177 | break; |
60bcf0fa | 3178 | } |
60bcf0fa NC |
3179 | } |
3180 | ||
606ab118 AM |
3181 | if (fragP->fr_subtype >= sizeof (md_relax_table) / sizeof (md_relax_table[0])) |
3182 | as_fatal (_("Subtype %d is not recognized."), fragP->fr_subtype); | |
3183 | ||
3184 | /* Return the size of the variable part of the frag. */ | |
3185 | return md_relax_table[fragP->fr_subtype].rlx_length; | |
60bcf0fa NC |
3186 | } |
3187 | ||
e371935f SC |
3188 | /* See whether we need to force a relocation into the output file. */ |
3189 | int | |
ca43c854 | 3190 | tc_m68hc11_force_relocation (fixS *fixP) |
e371935f | 3191 | { |
ae6063d4 AM |
3192 | if (fixP->fx_r_type == BFD_RELOC_M68HC11_RL_GROUP) |
3193 | return 1; | |
a161fe53 | 3194 | |
ae6063d4 | 3195 | return generic_force_reloc (fixP); |
e371935f SC |
3196 | } |
3197 | ||
3198 | /* Here we decide which fixups can be adjusted to make them relative | |
3199 | to the beginning of the section instead of the symbol. Basically | |
3200 | we need to make sure that the linker relaxation is done | |
3201 | correctly, so in some cases we force the original symbol to be | |
3202 | used. */ | |
3203 | int | |
ca43c854 | 3204 | tc_m68hc11_fix_adjustable (fixS *fixP) |
e371935f | 3205 | { |
e371935f SC |
3206 | switch (fixP->fx_r_type) |
3207 | { | |
3208 | /* For the linker relaxation to work correctly, these relocs | |
3209 | need to be on the symbol itself. */ | |
3210 | case BFD_RELOC_16: | |
e371935f SC |
3211 | case BFD_RELOC_M68HC11_RL_JUMP: |
3212 | case BFD_RELOC_M68HC11_RL_GROUP: | |
3213 | case BFD_RELOC_VTABLE_INHERIT: | |
3214 | case BFD_RELOC_VTABLE_ENTRY: | |
577300ce | 3215 | case BFD_RELOC_32: |
2d94a61a SC |
3216 | |
3217 | /* The memory bank addressing translation also needs the original | |
3218 | symbol. */ | |
577300ce | 3219 | case BFD_RELOC_M68HC11_LO16: |
2d94a61a SC |
3220 | case BFD_RELOC_M68HC11_PAGE: |
3221 | case BFD_RELOC_M68HC11_24: | |
e371935f SC |
3222 | return 0; |
3223 | ||
e371935f SC |
3224 | default: |
3225 | return 1; | |
3226 | } | |
3227 | } | |
3228 | ||
94f592af | 3229 | void |
ca43c854 | 3230 | md_apply_fix3 (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED) |
60bcf0fa NC |
3231 | { |
3232 | char *where; | |
94f592af | 3233 | long value = * valP; |
60bcf0fa NC |
3234 | int op_type; |
3235 | ||
94f592af NC |
3236 | if (fixP->fx_addsy == (symbolS *) NULL) |
3237 | fixP->fx_done = 1; | |
3238 | ||
a161fe53 AM |
3239 | /* We don't actually support subtracting a symbol. */ |
3240 | if (fixP->fx_subsy != (symbolS *) NULL) | |
3241 | as_bad_where (fixP->fx_file, fixP->fx_line, _("Expression too complex.")); | |
60bcf0fa | 3242 | |
94f592af | 3243 | op_type = fixP->fx_r_type; |
60bcf0fa NC |
3244 | |
3245 | /* Patch the instruction with the resolved operand. Elf relocation | |
3246 | info will also be generated to take care of linker/loader fixups. | |
3247 | The 68HC11 addresses only 64Kb, we are only concerned by 8 and 16-bit | |
3248 | relocs. BFD_RELOC_8 is basically used for .page0 access (the linker | |
3249 | will warn for overflows). BFD_RELOC_8_PCREL should not be generated | |
3250 | because it's either resolved or turned out into non-relative insns (see | |
3251 | relax table, bcc, bra, bsr transformations) | |
3252 | ||
3253 | The BFD_RELOC_32 is necessary for the support of --gstabs. */ | |
94f592af | 3254 | where = fixP->fx_frag->fr_literal + fixP->fx_where; |
60bcf0fa | 3255 | |
94f592af | 3256 | switch (fixP->fx_r_type) |
60bcf0fa NC |
3257 | { |
3258 | case BFD_RELOC_32: | |
3259 | bfd_putb32 ((bfd_vma) value, (unsigned char *) where); | |
3260 | break; | |
3261 | ||
7bfda7eb SC |
3262 | case BFD_RELOC_24: |
3263 | case BFD_RELOC_M68HC11_24: | |
3264 | bfd_putb16 ((bfd_vma) (value & 0x0ffff), (unsigned char *) where); | |
3265 | ((bfd_byte*) where)[2] = ((value >> 16) & 0x0ff); | |
3266 | break; | |
3267 | ||
60bcf0fa NC |
3268 | case BFD_RELOC_16: |
3269 | case BFD_RELOC_16_PCREL: | |
7bfda7eb | 3270 | case BFD_RELOC_M68HC11_LO16: |
60bcf0fa NC |
3271 | bfd_putb16 ((bfd_vma) value, (unsigned char *) where); |
3272 | if (value < -65537 || value > 65535) | |
94f592af | 3273 | as_bad_where (fixP->fx_file, fixP->fx_line, |
60bcf0fa NC |
3274 | _("Value out of 16-bit range.")); |
3275 | break; | |
3276 | ||
3277 | case BFD_RELOC_M68HC11_HI8: | |
3278 | value = value >> 8; | |
fafb6d17 | 3279 | /* Fall through. */ |
60bcf0fa NC |
3280 | |
3281 | case BFD_RELOC_M68HC11_LO8: | |
3282 | case BFD_RELOC_8: | |
7bfda7eb | 3283 | case BFD_RELOC_M68HC11_PAGE: |
fafb6d17 NC |
3284 | #if 0 |
3285 | bfd_putb8 ((bfd_vma) value, (unsigned char *) where); | |
3286 | #endif | |
60bcf0fa NC |
3287 | ((bfd_byte *) where)[0] = (bfd_byte) value; |
3288 | break; | |
3289 | ||
3290 | case BFD_RELOC_8_PCREL: | |
fafb6d17 NC |
3291 | #if 0 |
3292 | bfd_putb8 ((bfd_vma) value, (unsigned char *) where); | |
3293 | #endif | |
60bcf0fa NC |
3294 | ((bfd_byte *) where)[0] = (bfd_byte) value; |
3295 | ||
3296 | if (value < -128 || value > 127) | |
94f592af | 3297 | as_bad_where (fixP->fx_file, fixP->fx_line, |
60bcf0fa NC |
3298 | _("Value %ld too large for 8-bit PC-relative branch."), |
3299 | value); | |
3300 | break; | |
3301 | ||
3302 | case BFD_RELOC_M68HC11_3B: | |
3303 | if (value <= 0 || value > 8) | |
94f592af | 3304 | as_bad_where (fixP->fx_file, fixP->fx_line, |
60bcf0fa NC |
3305 | _("Auto increment/decrement offset '%ld' is out of range."), |
3306 | value); | |
3307 | if (where[0] & 0x8) | |
3308 | value = 8 - value; | |
3309 | else | |
3310 | value--; | |
3311 | ||
3312 | where[0] = where[0] | (value & 0x07); | |
3313 | break; | |
3314 | ||
28d39d1a NC |
3315 | case BFD_RELOC_M68HC12_5B: |
3316 | if (value < -16 || value > 15) | |
3317 | as_bad_where (fixP->fx_file, fixP->fx_line, | |
3318 | _("Offset out of 5-bit range for movw/movb insn: %ld"), | |
3319 | value); | |
3320 | if (value >= 0) | |
3321 | where[0] |= value; | |
3322 | else | |
3323 | where[0] |= (0x10 | (16 + value)); | |
3324 | break; | |
3325 | ||
e371935f SC |
3326 | case BFD_RELOC_M68HC11_RL_JUMP: |
3327 | case BFD_RELOC_M68HC11_RL_GROUP: | |
3328 | case BFD_RELOC_VTABLE_INHERIT: | |
3329 | case BFD_RELOC_VTABLE_ENTRY: | |
3330 | fixP->fx_done = 0; | |
3331 | return; | |
3332 | ||
60bcf0fa NC |
3333 | default: |
3334 | as_fatal (_("Line %d: unknown relocation type: 0x%x."), | |
94f592af | 3335 | fixP->fx_line, fixP->fx_r_type); |
60bcf0fa | 3336 | } |
60bcf0fa | 3337 | } |
eb086b59 SC |
3338 | |
3339 | /* Set the ELF specific flags. */ | |
3340 | void | |
ca43c854 | 3341 | m68hc11_elf_final_processing (void) |
eb086b59 | 3342 | { |
d01030e6 SC |
3343 | if (current_architecture & cpu6812s) |
3344 | elf_flags |= EF_M68HCS12_MACH; | |
eb086b59 SC |
3345 | elf_elfheader (stdoutput)->e_flags &= ~EF_M68HC11_ABI; |
3346 | elf_elfheader (stdoutput)->e_flags |= elf_flags; | |
3347 | } |