| 1 | /* tc-tic54x.c -- Assembly code for the Texas Instruments TMS320C54X |
| 2 | Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| 3 | Contributed by Timothy Wall (twall@cygnus.com) |
| 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 the Free |
| 19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 20 | 02111-1307, USA. */ |
| 21 | |
| 22 | /* Texas Instruments TMS320C54X machine specific gas. |
| 23 | Written by Timothy Wall (twall@alum.mit.edu). |
| 24 | |
| 25 | Valuable things to do: |
| 26 | Pipeline conflict warnings |
| 27 | We encode/decode "ld #_label, dp" differently in relocatable files |
| 28 | This means we're not compatible with TI output containing those |
| 29 | expressions. We store the upper nine bits; TI stores the lower nine |
| 30 | bits. How they recover the original upper nine bits is beyond me. |
| 31 | |
| 32 | Tests to add to expect testsuite: |
| 33 | '=' and '==' with .if, .elseif, and .break |
| 34 | |
| 35 | Incompatibilities (mostly trivial): |
| 36 | We don't allow ''' |
| 37 | We fill text section with zeroes instead of "nop"s |
| 38 | We don't convert '' or "" to a single instance |
| 39 | We don't convert '' to '\0' |
| 40 | We don't allow strings with .byte/.half/.short/.long |
| 41 | Probably details of the subsym stuff are different |
| 42 | TI sets labels to be data type 4 (T_INT); GAS uses T_NULL. |
| 43 | |
| 44 | COFF1 limits section names to 8 characters. |
| 45 | Some of the default behavior changed from COFF1 to COFF2. */ |
| 46 | |
| 47 | #include <stdlib.h> |
| 48 | #include <limits.h> |
| 49 | #include <errno.h> |
| 50 | #include "as.h" |
| 51 | #include "safe-ctype.h" |
| 52 | #include "sb.h" |
| 53 | #include "macro.h" |
| 54 | #include "subsegs.h" |
| 55 | #include "struc-symbol.h" |
| 56 | #include "opcode/tic54x.h" |
| 57 | #include "obj-coff.h" |
| 58 | #include <math.h> |
| 59 | |
| 60 | |
| 61 | static struct stag |
| 62 | { |
| 63 | symbolS *sym; /* Symbol for this stag; value is offset. */ |
| 64 | const char *name; /* Shortcut to symbol name. */ |
| 65 | bfd_vma size; /* Size of struct/union. */ |
| 66 | int current_bitfield_offset; /* Temporary for tracking fields. */ |
| 67 | int is_union; |
| 68 | struct stag_field /* List of fields. */ |
| 69 | { |
| 70 | const char *name; |
| 71 | bfd_vma offset; /* Of start of this field. */ |
| 72 | int bitfield_offset; /* Of start of this field. */ |
| 73 | struct stag *stag; /* If field is struct/union. */ |
| 74 | struct stag_field *next; |
| 75 | } *field; |
| 76 | /* For nesting; used only in stag construction. */ |
| 77 | struct stag *inner; /* Enclosed .struct. */ |
| 78 | struct stag *outer; /* Enclosing .struct. */ |
| 79 | } *current_stag = NULL; |
| 80 | |
| 81 | #define MAX_LINE 256 /* Lines longer than this are truncated by TI's asm. */ |
| 82 | |
| 83 | typedef struct _tic54x_insn |
| 84 | { |
| 85 | const template *tm; /* Opcode template. */ |
| 86 | |
| 87 | char mnemonic[MAX_LINE]; /* Opcode name/mnemonic. */ |
| 88 | char parmnemonic[MAX_LINE]; /* 2nd mnemonic of parallel insn. */ |
| 89 | |
| 90 | int opcount; |
| 91 | struct opstruct |
| 92 | { |
| 93 | char buf[MAX_LINE]; |
| 94 | enum optype type; |
| 95 | expressionS exp; |
| 96 | } operands[MAX_OPERANDS]; |
| 97 | |
| 98 | int paropcount; |
| 99 | struct opstruct paroperands[MAX_OPERANDS]; |
| 100 | |
| 101 | int is_lkaddr; |
| 102 | int lkoperand; |
| 103 | int words; /* Size of insn in 16-bit words. */ |
| 104 | int using_default_dst; /* Do we need to explicitly set an |
| 105 | omitted OP_DST operand? */ |
| 106 | struct |
| 107 | { |
| 108 | unsigned short word; /* Final encoded opcode data. */ |
| 109 | int unresolved; |
| 110 | int r_nchars; /* Relocation size. */ |
| 111 | bfd_reloc_code_real_type r_type; /* Relocation type. */ |
| 112 | expressionS addr_expr; /* Storage for unresolved expressions. */ |
| 113 | } opcode[3]; |
| 114 | } tic54x_insn; |
| 115 | |
| 116 | enum cpu_version |
| 117 | { |
| 118 | VNONE = 0, V541 = 1, V542 = 2, V543 = 3, V545 = 5, V548 = 8, V549 = 9, |
| 119 | V545LP = 15, V546LP = 16 |
| 120 | }; |
| 121 | |
| 122 | enum address_mode |
| 123 | { |
| 124 | c_mode, /* 16-bit addresses. */ |
| 125 | far_mode /* >16-bit addresses. */ |
| 126 | }; |
| 127 | |
| 128 | static segT stag_saved_seg; |
| 129 | static subsegT stag_saved_subseg; |
| 130 | |
| 131 | const char comment_chars[] = ";"; |
| 132 | const char line_comment_chars[] = ";*#"; /* At column zero only. */ |
| 133 | const char line_separator_chars[] = ""; /* Not permitted. */ |
| 134 | |
| 135 | int emitting_long = 0; |
| 136 | |
| 137 | /* Characters which indicate that this is a floating point constant. */ |
| 138 | const char FLT_CHARS[] = "fF"; |
| 139 | |
| 140 | /* Characters that can be used to separate mantissa from exp in FP |
| 141 | nums. */ |
| 142 | const char EXP_CHARS[] = "eE"; |
| 143 | |
| 144 | const char *md_shortopts = ""; |
| 145 | |
| 146 | #define OPTION_ADDRESS_MODE (OPTION_MD_BASE) |
| 147 | #define OPTION_CPU_VERSION (OPTION_ADDRESS_MODE + 1) |
| 148 | #define OPTION_COFF_VERSION (OPTION_CPU_VERSION + 1) |
| 149 | #define OPTION_STDERR_TO_FILE (OPTION_COFF_VERSION + 1) |
| 150 | |
| 151 | struct option md_longopts[] = |
| 152 | { |
| 153 | { "mfar-mode", no_argument, NULL, OPTION_ADDRESS_MODE }, |
| 154 | { "mf", no_argument, NULL, OPTION_ADDRESS_MODE }, |
| 155 | { "mcpu", required_argument, NULL, OPTION_CPU_VERSION }, |
| 156 | #if 0 |
| 157 | { "mcoff-version", required_argument, NULL, OPTION_COFF_VERSION }, |
| 158 | #endif |
| 159 | { "merrors-to-file", required_argument, NULL, OPTION_STDERR_TO_FILE }, |
| 160 | { "me", required_argument, NULL, OPTION_STDERR_TO_FILE }, |
| 161 | { NULL, no_argument, NULL, 0}, |
| 162 | }; |
| 163 | |
| 164 | size_t md_longopts_size = sizeof (md_longopts); |
| 165 | |
| 166 | static int assembly_begun = 0; |
| 167 | /* Addressing mode is not entirely implemented; the latest rev of the Other |
| 168 | assembler doesn't seem to make any distinction whatsoever; all relocations |
| 169 | are stored as extended relocatiosn. Older versions used REL16 vs RELEXT16, |
| 170 | but now it seems all relocations are RELEXT16. We use all RELEXT16. |
| 171 | |
| 172 | The cpu version is kind of a waste of time as well. There is one |
| 173 | instruction (RND) for LP devices only, and several for devices with |
| 174 | extended addressing only. We include it for compatibility. */ |
| 175 | static enum address_mode amode = c_mode; |
| 176 | static enum cpu_version cpu = VNONE; |
| 177 | |
| 178 | /* Include string substitutions in listing? */ |
| 179 | static int listing_sslist = 0; |
| 180 | |
| 181 | /* Did we do subsym substitutions on the line? */ |
| 182 | static int substitution_line = 0; |
| 183 | |
| 184 | /* Last label seen. */ |
| 185 | static symbolS *last_label_seen = NULL; |
| 186 | |
| 187 | /* This ensures that all new labels are unique. */ |
| 188 | static int local_label_id; |
| 189 | |
| 190 | static struct hash_control *subsym_recurse_hash; /* Prevent infinite recurse. */ |
| 191 | static struct hash_control *math_hash; /* Built-in math functions. */ |
| 192 | /* Allow maximum levels of macro nesting; level 0 is the main substitution |
| 193 | symbol table. The other assembler only does 32 levels, so there! */ |
| 194 | static struct hash_control *subsym_hash[100]; |
| 195 | |
| 196 | /* Keep track of local labels so we can substitute them before GAS sees them |
| 197 | since macros use their own 'namespace' for local labels, use a separate hash |
| 198 | |
| 199 | We do our own local label handling 'cuz it's subtly different from the |
| 200 | stock GAS handling. |
| 201 | |
| 202 | We use our own macro nesting counter, since GAS overloads it when expanding |
| 203 | other things (like conditionals and repeat loops). */ |
| 204 | static int macro_level = 0; |
| 205 | static struct hash_control *local_label_hash[100]; |
| 206 | /* Keep track of struct/union tags. */ |
| 207 | static struct hash_control *stag_hash; |
| 208 | static struct hash_control *op_hash; |
| 209 | static struct hash_control *parop_hash; |
| 210 | static struct hash_control *reg_hash; |
| 211 | static struct hash_control *mmreg_hash; |
| 212 | static struct hash_control *cc_hash; |
| 213 | static struct hash_control *cc2_hash; |
| 214 | static struct hash_control *cc3_hash; |
| 215 | static struct hash_control *sbit_hash; |
| 216 | static struct hash_control *misc_symbol_hash; |
| 217 | |
| 218 | /* Only word (et al.), align, or conditionals are allowed within |
| 219 | .struct/.union. */ |
| 220 | #define ILLEGAL_WITHIN_STRUCT() \ |
| 221 | do \ |
| 222 | if (current_stag != NULL) \ |
| 223 | { \ |
| 224 | as_bad (_("pseudo-op illegal within .struct/.union")); \ |
| 225 | return; \ |
| 226 | } \ |
| 227 | while (0) |
| 228 | |
| 229 | static void tic54x_emit_char PARAMS ((char)); |
| 230 | static fragS * frag_prev PARAMS ((fragS *, segT)); |
| 231 | static fragS * bit_offset_frag PARAMS ((fragS *, segT)); |
| 232 | static int frag_bit_offset PARAMS ((fragS *, segT)); |
| 233 | static char * parse_expression PARAMS ((char *, expressionS *)); |
| 234 | static void tic54x_asg PARAMS ((int)); |
| 235 | static void tic54x_eval PARAMS ((int)); |
| 236 | static void tic54x_bss PARAMS ((int)); |
| 237 | static void stag_add_field_symbols PARAMS ((struct stag *, const char *, bfd_vma, symbolS *, const char *)); |
| 238 | static void stag_add_field PARAMS ((struct stag *, const char *, bfd_vma, struct stag *)); |
| 239 | static void tic54x_struct PARAMS ((int)); |
| 240 | static void tic54x_endstruct PARAMS ((int)); |
| 241 | static void tic54x_tag PARAMS ((int)); |
| 242 | static void tic54x_struct_field PARAMS ((int)); |
| 243 | static void tic54x_cons PARAMS ((int)); |
| 244 | static void tic54x_remove_local_label PARAMS ((const char *, PTR)); |
| 245 | static void tic54x_clear_local_labels PARAMS ((int)); |
| 246 | static void tic54x_sect PARAMS ((int)); |
| 247 | static void tic54x_space PARAMS ((int)); |
| 248 | static void tic54x_usect PARAMS ((int)); |
| 249 | static enum cpu_version lookup_version PARAMS ((const char *)); |
| 250 | static void set_cpu PARAMS ((enum cpu_version)); |
| 251 | static void tic54x_version PARAMS ((int)); |
| 252 | static void tic54x_float_cons PARAMS ((int)); |
| 253 | static void tic54x_stringer PARAMS ((int)); |
| 254 | static void tic54x_p2align PARAMS ((int)); |
| 255 | static void tic54x_align_words PARAMS ((int)); |
| 256 | static void tic54x_field PARAMS ((int)); |
| 257 | static int tic54x_initialized_section PARAMS ((segT)); |
| 258 | static void tic54x_clink PARAMS ((int)); |
| 259 | static void tic54x_set_default_include PARAMS ((int)); |
| 260 | static void tic54x_include PARAMS ((int)); |
| 261 | static void tic54x_message PARAMS ((int)); |
| 262 | static void tic54x_label PARAMS ((int)); |
| 263 | static void tic54x_mmregs PARAMS ((int)); |
| 264 | static void tic54x_loop PARAMS ((int)); |
| 265 | static void tic54x_endloop PARAMS ((int)); |
| 266 | static void tic54x_break PARAMS ((int)); |
| 267 | static void set_address_mode PARAMS ((int)); |
| 268 | static void tic54x_address_mode PARAMS ((int)); |
| 269 | static void tic54x_sblock PARAMS ((int)); |
| 270 | static void tic54x_set PARAMS ((int)); |
| 271 | static void tic54x_fclist PARAMS ((int)); |
| 272 | static void tic54x_sslist PARAMS ((int)); |
| 273 | static void tic54x_var PARAMS ((int)); |
| 274 | static void tic54x_mlib PARAMS ((int)); |
| 275 | static int subsym_symlen PARAMS ((char *, char *)); |
| 276 | static int subsym_symcmp PARAMS ((char *, char *)); |
| 277 | static int subsym_firstch PARAMS ((char *, char *)); |
| 278 | static int subsym_lastch PARAMS ((char *, char *)); |
| 279 | static int subsym_isdefed PARAMS ((char *, char *)); |
| 280 | static int subsym_ismember PARAMS ((char *, char *)); |
| 281 | static int subsym_iscons PARAMS ((char *, char *)); |
| 282 | static int subsym_isname PARAMS ((char *, char *)); |
| 283 | static int subsym_isreg PARAMS ((char *, char *)); |
| 284 | static int subsym_structsz PARAMS ((char *, char *)); |
| 285 | static int subsym_structacc PARAMS ((char *, char *)); |
| 286 | static float math_ceil PARAMS ((float, float)); |
| 287 | static float math_cvi PARAMS ((float, float)); |
| 288 | static float math_floor PARAMS ((float, float)); |
| 289 | static float math_fmod PARAMS ((float, float)); |
| 290 | static float math_int PARAMS ((float, float)); |
| 291 | static float math_round PARAMS ((float, float)); |
| 292 | static float math_sgn PARAMS ((float, float)); |
| 293 | static float math_trunc PARAMS ((float, float)); |
| 294 | static float math_acos PARAMS ((float, float)); |
| 295 | static float math_asin PARAMS ((float, float)); |
| 296 | static float math_atan PARAMS ((float, float)); |
| 297 | static float math_atan2 PARAMS ((float, float)); |
| 298 | static float math_cosh PARAMS ((float, float)); |
| 299 | static float math_cos PARAMS ((float, float)); |
| 300 | static float math_cvf PARAMS ((float, float)); |
| 301 | static float math_exp PARAMS ((float, float)); |
| 302 | static float math_fabs PARAMS ((float, float)); |
| 303 | static float math_ldexp PARAMS ((float, float)); |
| 304 | static float math_log10 PARAMS ((float, float)); |
| 305 | static float math_log PARAMS ((float, float)); |
| 306 | static float math_max PARAMS ((float, float)); |
| 307 | static float math_min PARAMS ((float, float)); |
| 308 | static float math_pow PARAMS ((float, float)); |
| 309 | static float math_sin PARAMS ((float, float)); |
| 310 | static float math_sinh PARAMS ((float, float)); |
| 311 | static float math_sqrt PARAMS ((float, float)); |
| 312 | static float math_tan PARAMS ((float, float)); |
| 313 | static float math_tanh PARAMS ((float, float)); |
| 314 | static int is_accumulator PARAMS ((struct opstruct *)); |
| 315 | static int get_operands PARAMS ((struct opstruct operands[], char *)); |
| 316 | static int is_immediate PARAMS ((struct opstruct *)); |
| 317 | static int is_absolute PARAMS ((struct opstruct *)); |
| 318 | static int is_indirect PARAMS ((struct opstruct *)); |
| 319 | static int is_dual PARAMS ((struct opstruct *)); |
| 320 | static int is_mmreg PARAMS ((struct opstruct *)); |
| 321 | static int is_type PARAMS ((struct opstruct *, enum optype)); |
| 322 | static int operands_match PARAMS ((tic54x_insn *, struct opstruct *, int, const enum optype *, int, int)); |
| 323 | static int encode_dmad PARAMS ((tic54x_insn *, struct opstruct *, int)); |
| 324 | static int encode_address PARAMS ((tic54x_insn *, struct opstruct *)); |
| 325 | static int encode_indirect PARAMS ((tic54x_insn *, struct opstruct *)); |
| 326 | static int encode_integer PARAMS ((tic54x_insn *, struct opstruct *, int, int, int, unsigned short)); |
| 327 | static int encode_condition PARAMS ((tic54x_insn *, struct opstruct *)); |
| 328 | static int encode_cc3 PARAMS ((tic54x_insn *, struct opstruct *)); |
| 329 | static int encode_arx PARAMS ((tic54x_insn *, struct opstruct *)); |
| 330 | static int encode_cc2 PARAMS ((tic54x_insn *, struct opstruct *)); |
| 331 | static int encode_operand PARAMS ((tic54x_insn *, enum optype, struct opstruct *)); |
| 332 | static void emit_insn PARAMS ((tic54x_insn *)); |
| 333 | static int build_insn PARAMS ((tic54x_insn *)); |
| 334 | static int optimize_insn PARAMS ((tic54x_insn *)); |
| 335 | static int tic54x_parse_insn PARAMS ((tic54x_insn *, char *)); |
| 336 | static int next_line_shows_parallel PARAMS ((char *)); |
| 337 | static int tic54x_parse_parallel_insn_firstline PARAMS ((tic54x_insn *, char *)); |
| 338 | static int tic54x_parse_parallel_insn_lastline PARAMS ((tic54x_insn *, char *)); |
| 339 | static char * subsym_get_arg PARAMS ((char *, char *, char **, int)); |
| 340 | static void subsym_create_or_replace PARAMS ((char *, char *)); |
| 341 | static char * subsym_lookup PARAMS ((char *, int)); |
| 342 | static char * subsym_substitute PARAMS ((char *, int)); |
| 343 | |
| 344 | |
| 345 | void |
| 346 | md_show_usage (stream) |
| 347 | FILE *stream; |
| 348 | { |
| 349 | fprintf (stream, _("C54x-specific command line options:\n")); |
| 350 | fprintf (stream, _("-mfar-mode | -mf Use extended addressing\n")); |
| 351 | fprintf (stream, _("-mcpu=<CPU version> Specify the CPU version\n")); |
| 352 | #if 0 |
| 353 | fprintf (stream, _("-mcoff-version={0|1|2} Select COFF version\n")); |
| 354 | #endif |
| 355 | fprintf (stream, _("-merrors-to-file <filename>\n")); |
| 356 | fprintf (stream, _("-me <filename> Redirect errors to a file\n")); |
| 357 | } |
| 358 | |
| 359 | /* Output a single character (upper octect is zero). */ |
| 360 | |
| 361 | static void |
| 362 | tic54x_emit_char (c) |
| 363 | char c; |
| 364 | { |
| 365 | expressionS exp; |
| 366 | |
| 367 | exp.X_op = O_constant; |
| 368 | exp.X_add_number = c; |
| 369 | emit_expr (&exp, 2); |
| 370 | } |
| 371 | |
| 372 | /* Walk backwards in the frag chain. */ |
| 373 | |
| 374 | static fragS * |
| 375 | frag_prev (frag, seg) |
| 376 | fragS *frag; |
| 377 | segT seg; |
| 378 | { |
| 379 | segment_info_type *seginfo = seg_info (seg); |
| 380 | fragS *fragp; |
| 381 | |
| 382 | for (fragp = seginfo->frchainP->frch_root; fragp; fragp = fragp->fr_next) |
| 383 | if (fragp->fr_next == frag) |
| 384 | return fragp; |
| 385 | |
| 386 | return NULL; |
| 387 | } |
| 388 | |
| 389 | static fragS * |
| 390 | bit_offset_frag (frag, seg) |
| 391 | fragS *frag; |
| 392 | segT seg; |
| 393 | { |
| 394 | while (frag != NULL) |
| 395 | { |
| 396 | if (frag->fr_fix == 0 |
| 397 | && frag->fr_opcode == NULL |
| 398 | && frag->tc_frag_data == 0) |
| 399 | frag = frag_prev (frag, seg); |
| 400 | else |
| 401 | return frag; |
| 402 | } |
| 403 | return NULL; |
| 404 | } |
| 405 | |
| 406 | /* Return the number of bits allocated in the most recent word, or zero if |
| 407 | none. .field/.space/.bes may leave words partially allocated. */ |
| 408 | |
| 409 | static int |
| 410 | frag_bit_offset (frag, seg) |
| 411 | fragS *frag; |
| 412 | segT seg; |
| 413 | { |
| 414 | frag = bit_offset_frag (frag, seg); |
| 415 | |
| 416 | if (frag) |
| 417 | return frag->fr_opcode != NULL ? -1 : frag->tc_frag_data; |
| 418 | |
| 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | /* Read an expression from a C string; returns a pointer past the end of the |
| 423 | expression. */ |
| 424 | |
| 425 | static char * |
| 426 | parse_expression (str, exp) |
| 427 | char *str; |
| 428 | expressionS * exp; |
| 429 | { |
| 430 | char *s; |
| 431 | char *tmp; |
| 432 | |
| 433 | tmp = input_line_pointer; /* Save line pointer. */ |
| 434 | input_line_pointer = str; |
| 435 | expression (exp); |
| 436 | s = input_line_pointer; |
| 437 | input_line_pointer = tmp; /* Restore line pointer. */ |
| 438 | return s; /* Return pointer to where parsing stopped. */ |
| 439 | } |
| 440 | |
| 441 | /* .asg "character-string"|character-string, symbol |
| 442 | |
| 443 | .eval is the only pseudo-op allowed to perform arithmetic on substitution |
| 444 | symbols. all other use of symbols defined with .asg are currently |
| 445 | unsupported. */ |
| 446 | |
| 447 | static void |
| 448 | tic54x_asg (x) |
| 449 | int x ATTRIBUTE_UNUSED; |
| 450 | { |
| 451 | int c; |
| 452 | char *name; |
| 453 | char *str; |
| 454 | char *tmp; |
| 455 | int quoted = *input_line_pointer == '"'; |
| 456 | |
| 457 | ILLEGAL_WITHIN_STRUCT (); |
| 458 | |
| 459 | if (quoted) |
| 460 | { |
| 461 | int len; |
| 462 | str = demand_copy_C_string (&len); |
| 463 | c = *input_line_pointer; |
| 464 | } |
| 465 | else |
| 466 | { |
| 467 | str = input_line_pointer; |
| 468 | while ((c = *input_line_pointer) != ',') |
| 469 | { |
| 470 | if (is_end_of_line[(int) *input_line_pointer]) |
| 471 | break; |
| 472 | ++input_line_pointer; |
| 473 | } |
| 474 | *input_line_pointer = 0; |
| 475 | } |
| 476 | if (c != ',') |
| 477 | { |
| 478 | as_bad (_("Comma and symbol expected for '.asg STRING, SYMBOL'")); |
| 479 | ignore_rest_of_line (); |
| 480 | return; |
| 481 | } |
| 482 | |
| 483 | name = ++input_line_pointer; |
| 484 | c = get_symbol_end (); /* Get terminator. */ |
| 485 | if (!ISALPHA (*name)) |
| 486 | { |
| 487 | as_bad ("symbols assigned with .asg must begin with a letter"); |
| 488 | ignore_rest_of_line (); |
| 489 | return; |
| 490 | } |
| 491 | |
| 492 | tmp = xmalloc (strlen (str) + 1); |
| 493 | strcpy (tmp, str); |
| 494 | str = tmp; |
| 495 | tmp = xmalloc (strlen (name) + 1); |
| 496 | strcpy (tmp, name); |
| 497 | name = tmp; |
| 498 | subsym_create_or_replace (name, str); |
| 499 | *input_line_pointer = c; |
| 500 | demand_empty_rest_of_line (); |
| 501 | } |
| 502 | |
| 503 | /* .eval expression, symbol |
| 504 | There's something screwy about this. The other assembler sometimes does and |
| 505 | sometimes doesn't substitute symbols defined with .eval. |
| 506 | We'll put the symbols into the subsym table as well as the normal symbol |
| 507 | table, since that's what works best. */ |
| 508 | |
| 509 | static void |
| 510 | tic54x_eval (x) |
| 511 | int x ATTRIBUTE_UNUSED; |
| 512 | { |
| 513 | char c; |
| 514 | int value; |
| 515 | char *name; |
| 516 | symbolS *symbolP; |
| 517 | char valuestr[32], *tmp; |
| 518 | int quoted; |
| 519 | |
| 520 | ILLEGAL_WITHIN_STRUCT (); |
| 521 | |
| 522 | SKIP_WHITESPACE (); |
| 523 | |
| 524 | quoted = *input_line_pointer == '"'; |
| 525 | if (quoted) |
| 526 | ++input_line_pointer; |
| 527 | value = get_absolute_expression (); |
| 528 | if (quoted) |
| 529 | { |
| 530 | if (*input_line_pointer != '"') |
| 531 | { |
| 532 | as_bad (_("Unterminated string after absolute expression")); |
| 533 | ignore_rest_of_line (); |
| 534 | return; |
| 535 | } |
| 536 | ++input_line_pointer; |
| 537 | } |
| 538 | if (*input_line_pointer++ != ',') |
| 539 | { |
| 540 | as_bad (_("Comma and symbol expected for '.eval EXPR, SYMBOL'")); |
| 541 | ignore_rest_of_line (); |
| 542 | return; |
| 543 | } |
| 544 | name = input_line_pointer; |
| 545 | c = get_symbol_end (); /* Get terminator. */ |
| 546 | tmp = xmalloc (strlen (name) + 1); |
| 547 | name = strcpy (tmp, name); |
| 548 | *input_line_pointer = c; |
| 549 | |
| 550 | if (!ISALPHA (*name)) |
| 551 | { |
| 552 | as_bad (_("symbols assigned with .eval must begin with a letter")); |
| 553 | ignore_rest_of_line (); |
| 554 | return; |
| 555 | } |
| 556 | symbolP = symbol_new (name, absolute_section, |
| 557 | (valueT) value, &zero_address_frag); |
| 558 | SF_SET_LOCAL (symbolP); |
| 559 | symbol_table_insert (symbolP); |
| 560 | |
| 561 | /* The "other" assembler sometimes doesn't put .eval's in the subsym table |
| 562 | But since there's not written rule as to when, don't even bother trying |
| 563 | to match their behavior. */ |
| 564 | sprintf (valuestr, "%d", value); |
| 565 | tmp = xmalloc (strlen (valuestr) + 1); |
| 566 | strcpy (tmp, valuestr); |
| 567 | subsym_create_or_replace (name, tmp); |
| 568 | |
| 569 | demand_empty_rest_of_line (); |
| 570 | } |
| 571 | |
| 572 | /* .bss symbol, size [, [blocking flag] [, alignment flag] |
| 573 | |
| 574 | alignment is to a longword boundary; blocking is to 128-word boundary. |
| 575 | |
| 576 | 1) if there is a hole in memory, this directive should attempt to fill it |
| 577 | (not yet implemented). |
| 578 | |
| 579 | 2) if the blocking flag is not set, allocate at the current SPC |
| 580 | otherwise, check to see if the current SPC plus the space to be |
| 581 | allocated crosses the page boundary (128 words). |
| 582 | if there's not enough space, create a hole and align with the next page |
| 583 | boundary. |
| 584 | (not yet implemented). */ |
| 585 | |
| 586 | static void |
| 587 | tic54x_bss (x) |
| 588 | int x ATTRIBUTE_UNUSED; |
| 589 | { |
| 590 | char c; |
| 591 | char *name; |
| 592 | char *p; |
| 593 | int words; |
| 594 | segT current_seg; |
| 595 | subsegT current_subseg; |
| 596 | symbolS *symbolP; |
| 597 | int block = 0; |
| 598 | int align = 0; |
| 599 | |
| 600 | ILLEGAL_WITHIN_STRUCT (); |
| 601 | |
| 602 | current_seg = now_seg; /* Save current seg. */ |
| 603 | current_subseg = now_subseg; /* Save current subseg. */ |
| 604 | |
| 605 | name = input_line_pointer; |
| 606 | c = get_symbol_end (); /* Get terminator. */ |
| 607 | if (c != ',') |
| 608 | { |
| 609 | as_bad (".bss size argument missing\n"); |
| 610 | ignore_rest_of_line (); |
| 611 | return; |
| 612 | } |
| 613 | |
| 614 | ++input_line_pointer; |
| 615 | words = get_absolute_expression (); |
| 616 | if (words < 0) |
| 617 | { |
| 618 | as_bad (".bss size %d < 0!", words); |
| 619 | ignore_rest_of_line (); |
| 620 | return; |
| 621 | } |
| 622 | |
| 623 | if (*input_line_pointer == ',') |
| 624 | { |
| 625 | /* The blocking flag may be missing. */ |
| 626 | ++input_line_pointer; |
| 627 | if (*input_line_pointer != ',') |
| 628 | block = get_absolute_expression (); |
| 629 | else |
| 630 | block = 0; |
| 631 | |
| 632 | if (*input_line_pointer == ',') |
| 633 | { |
| 634 | ++input_line_pointer; |
| 635 | align = get_absolute_expression (); |
| 636 | } |
| 637 | else |
| 638 | align = 0; |
| 639 | } |
| 640 | else |
| 641 | block = align = 0; |
| 642 | |
| 643 | subseg_set (bss_section, 0); |
| 644 | symbolP = symbol_find_or_make (name); |
| 645 | |
| 646 | if (S_GET_SEGMENT (symbolP) == bss_section) |
| 647 | symbolP->sy_frag->fr_symbol = (symbolS *) NULL; |
| 648 | |
| 649 | symbol_set_frag (symbolP, frag_now); |
| 650 | p = frag_var (rs_org, 1, 1, (relax_substateT) 0, symbolP, |
| 651 | (offsetT) (words * OCTETS_PER_BYTE), (char *) 0); |
| 652 | *p = 0; /* Fill char. */ |
| 653 | |
| 654 | S_SET_SEGMENT (symbolP, bss_section); |
| 655 | |
| 656 | /* The symbol may already have been created with a preceding |
| 657 | ".globl" directive -- be careful not to step on storage class |
| 658 | in that case. Otherwise, set it to static. */ |
| 659 | if (S_GET_STORAGE_CLASS (symbolP) != C_EXT) |
| 660 | S_SET_STORAGE_CLASS (symbolP, C_STAT); |
| 661 | |
| 662 | if (align) |
| 663 | { |
| 664 | /* s_align eats end of line; restore it */ |
| 665 | s_align_bytes (4); |
| 666 | --input_line_pointer; |
| 667 | } |
| 668 | |
| 669 | if (block) |
| 670 | bss_section->flags |= SEC_BLOCK; |
| 671 | |
| 672 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ |
| 673 | demand_empty_rest_of_line (); |
| 674 | } |
| 675 | |
| 676 | static void |
| 677 | stag_add_field_symbols (stag, path, base_offset, rootsym, root_stag_name) |
| 678 | struct stag *stag; |
| 679 | const char *path; |
| 680 | bfd_vma base_offset; |
| 681 | symbolS *rootsym; |
| 682 | const char *root_stag_name; |
| 683 | { |
| 684 | char prefix[strlen (path) + 2]; |
| 685 | struct stag_field *field = stag->field; |
| 686 | |
| 687 | /* Construct a symbol for every field contained within this structure |
| 688 | including fields within structure fields. */ |
| 689 | strcpy (prefix, path); |
| 690 | if (*path) |
| 691 | strcat (prefix, "."); |
| 692 | |
| 693 | while (field != NULL) |
| 694 | { |
| 695 | int len = strlen (prefix) + strlen (field->name) + 2; |
| 696 | char *name = xmalloc (len); |
| 697 | strcpy (name, prefix); |
| 698 | strcat (name, field->name); |
| 699 | |
| 700 | if (rootsym == NULL) |
| 701 | { |
| 702 | symbolS *sym; |
| 703 | sym = symbol_new (name, absolute_section, |
| 704 | (field->stag ? field->offset : |
| 705 | (valueT) (base_offset + field->offset)), |
| 706 | &zero_address_frag); |
| 707 | SF_SET_LOCAL (sym); |
| 708 | symbol_table_insert (sym); |
| 709 | } |
| 710 | else |
| 711 | { |
| 712 | char *replacement = xmalloc (strlen (name) |
| 713 | + strlen (stag->name) + 2); |
| 714 | strcpy (replacement, S_GET_NAME (rootsym)); |
| 715 | strcat (replacement, "+"); |
| 716 | strcat (replacement, root_stag_name); |
| 717 | strcat (replacement, name + strlen (S_GET_NAME (rootsym))); |
| 718 | hash_insert (subsym_hash[0], name, replacement); |
| 719 | } |
| 720 | |
| 721 | /* Recurse if the field is a structure. |
| 722 | Note the field offset is relative to the outermost struct. */ |
| 723 | if (field->stag != NULL) |
| 724 | stag_add_field_symbols (field->stag, name, |
| 725 | field->offset, |
| 726 | rootsym, root_stag_name); |
| 727 | field = field->next; |
| 728 | } |
| 729 | } |
| 730 | |
| 731 | /* Keep track of stag fields so that when structures are nested we can add the |
| 732 | complete dereferencing symbols to the symbol table. */ |
| 733 | |
| 734 | static void |
| 735 | stag_add_field (parent, name, offset, stag) |
| 736 | struct stag *parent; |
| 737 | const char *name; |
| 738 | bfd_vma offset; |
| 739 | struct stag *stag; |
| 740 | { |
| 741 | struct stag_field *sfield = xmalloc (sizeof (struct stag_field)); |
| 742 | |
| 743 | memset (sfield, 0, sizeof (*sfield)); |
| 744 | sfield->name = strcpy (xmalloc (strlen (name) + 1), name); |
| 745 | sfield->offset = offset; |
| 746 | sfield->bitfield_offset = parent->current_bitfield_offset; |
| 747 | sfield->stag = stag; |
| 748 | if (parent->field == NULL) |
| 749 | parent->field = sfield; |
| 750 | else |
| 751 | { |
| 752 | struct stag_field *sf = parent->field; |
| 753 | while (sf->next != NULL) |
| 754 | sf = sf->next; |
| 755 | sf->next = sfield; |
| 756 | } |
| 757 | /* Only create a symbol for this field if the parent has no name. */ |
| 758 | if (!strncmp (".fake", parent->name, 5)) |
| 759 | { |
| 760 | symbolS *sym = symbol_new (name, absolute_section, |
| 761 | (valueT) offset, &zero_address_frag); |
| 762 | SF_SET_LOCAL (sym); |
| 763 | symbol_table_insert (sym); |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | /* [STAG] .struct [OFFSET] |
| 768 | Start defining structure offsets (symbols in absolute section). */ |
| 769 | |
| 770 | static void |
| 771 | tic54x_struct (arg) |
| 772 | int arg; |
| 773 | { |
| 774 | int start_offset = 0; |
| 775 | int is_union = arg; |
| 776 | |
| 777 | if (!current_stag) |
| 778 | { |
| 779 | /* Starting a new struct, switch to absolute section. */ |
| 780 | stag_saved_seg = now_seg; |
| 781 | stag_saved_subseg = now_subseg; |
| 782 | subseg_set (absolute_section, 0); |
| 783 | } |
| 784 | /* Align the current pointer. */ |
| 785 | else if (current_stag->current_bitfield_offset != 0) |
| 786 | { |
| 787 | ++abs_section_offset; |
| 788 | current_stag->current_bitfield_offset = 0; |
| 789 | } |
| 790 | |
| 791 | /* Offset expression is only meaningful for global .structs. */ |
| 792 | if (!is_union) |
| 793 | { |
| 794 | /* Offset is ignored in inner structs. */ |
| 795 | SKIP_WHITESPACE (); |
| 796 | if (!is_end_of_line[(int) *input_line_pointer]) |
| 797 | start_offset = get_absolute_expression (); |
| 798 | else |
| 799 | start_offset = 0; |
| 800 | } |
| 801 | |
| 802 | if (current_stag) |
| 803 | { |
| 804 | /* Nesting, link to outer one. */ |
| 805 | current_stag->inner = (struct stag *) xmalloc (sizeof (struct stag)); |
| 806 | memset (current_stag->inner, 0, sizeof (struct stag)); |
| 807 | current_stag->inner->outer = current_stag; |
| 808 | current_stag = current_stag->inner; |
| 809 | if (start_offset) |
| 810 | as_warn (_("Offset on nested structures is ignored")); |
| 811 | start_offset = abs_section_offset; |
| 812 | } |
| 813 | else |
| 814 | { |
| 815 | current_stag = (struct stag *) xmalloc (sizeof (struct stag)); |
| 816 | memset (current_stag, 0, sizeof (struct stag)); |
| 817 | abs_section_offset = start_offset; |
| 818 | } |
| 819 | current_stag->is_union = is_union; |
| 820 | |
| 821 | if (line_label == NULL) |
| 822 | { |
| 823 | static int struct_count = 0; |
| 824 | char fake[] = ".fake_stagNNNNNNN"; |
| 825 | sprintf (fake, ".fake_stag%d", struct_count++); |
| 826 | current_stag->sym = symbol_new (fake, absolute_section, |
| 827 | (valueT) abs_section_offset, |
| 828 | &zero_address_frag); |
| 829 | } |
| 830 | else |
| 831 | { |
| 832 | char label[strlen (S_GET_NAME (line_label)) + 1]; |
| 833 | strcpy (label, S_GET_NAME (line_label)); |
| 834 | current_stag->sym = symbol_new (label, absolute_section, |
| 835 | (valueT) abs_section_offset, |
| 836 | &zero_address_frag); |
| 837 | } |
| 838 | current_stag->name = S_GET_NAME (current_stag->sym); |
| 839 | SF_SET_LOCAL (current_stag->sym); |
| 840 | /* Nested .structs don't go into the symbol table. */ |
| 841 | if (current_stag->outer == NULL) |
| 842 | symbol_table_insert (current_stag->sym); |
| 843 | |
| 844 | line_label = NULL; |
| 845 | } |
| 846 | |
| 847 | /* [LABEL] .endstruct |
| 848 | finish defining structure offsets; optional LABEL's value will be the size |
| 849 | of the structure. */ |
| 850 | |
| 851 | static void |
| 852 | tic54x_endstruct (is_union) |
| 853 | int is_union; |
| 854 | { |
| 855 | int size; |
| 856 | const char *path = |
| 857 | !strncmp (current_stag->name, ".fake", 5) ? "" : current_stag->name; |
| 858 | |
| 859 | if (!current_stag || current_stag->is_union != is_union) |
| 860 | { |
| 861 | as_bad (_(".end%s without preceding .%s"), |
| 862 | is_union ? "union" : "struct", |
| 863 | is_union ? "union" : "struct"); |
| 864 | ignore_rest_of_line (); |
| 865 | return; |
| 866 | } |
| 867 | |
| 868 | /* Align end of structures. */ |
| 869 | if (current_stag->current_bitfield_offset) |
| 870 | { |
| 871 | ++abs_section_offset; |
| 872 | current_stag->current_bitfield_offset = 0; |
| 873 | } |
| 874 | |
| 875 | if (current_stag->is_union) |
| 876 | size = current_stag->size; |
| 877 | else |
| 878 | size = abs_section_offset - S_GET_VALUE (current_stag->sym); |
| 879 | if (line_label != NULL) |
| 880 | { |
| 881 | S_SET_VALUE (line_label, size); |
| 882 | symbol_table_insert (line_label); |
| 883 | line_label = NULL; |
| 884 | } |
| 885 | |
| 886 | /* Union size has already been calculated. */ |
| 887 | if (!current_stag->is_union) |
| 888 | current_stag->size = size; |
| 889 | /* Nested .structs don't get put in the stag table. */ |
| 890 | if (current_stag->outer == NULL) |
| 891 | { |
| 892 | hash_insert (stag_hash, current_stag->name, current_stag); |
| 893 | stag_add_field_symbols (current_stag, path, |
| 894 | S_GET_VALUE (current_stag->sym), |
| 895 | NULL, NULL); |
| 896 | } |
| 897 | current_stag = current_stag->outer; |
| 898 | |
| 899 | /* If this is a nested .struct/.union, add it as a field to the enclosing |
| 900 | one. otherwise, restore the section we were in. */ |
| 901 | if (current_stag != NULL) |
| 902 | { |
| 903 | stag_add_field (current_stag, current_stag->inner->name, |
| 904 | S_GET_VALUE (current_stag->inner->sym), |
| 905 | current_stag->inner); |
| 906 | } |
| 907 | else |
| 908 | subseg_set (stag_saved_seg, stag_saved_subseg); |
| 909 | } |
| 910 | |
| 911 | /* [LABEL] .tag STAG |
| 912 | Reference a structure within a structure, as a sized field with an optional |
| 913 | label. |
| 914 | If used outside of a .struct/.endstruct, overlays the given structure |
| 915 | format on the existing allocated space. */ |
| 916 | |
| 917 | static void |
| 918 | tic54x_tag (ignore) |
| 919 | int ignore ATTRIBUTE_UNUSED; |
| 920 | { |
| 921 | char *name = input_line_pointer; |
| 922 | int c = get_symbol_end (); |
| 923 | struct stag *stag = (struct stag *) hash_find (stag_hash, name); |
| 924 | |
| 925 | if (!stag) |
| 926 | { |
| 927 | if (*name) |
| 928 | as_bad (_("Unrecognized struct/union tag '%s'"), name); |
| 929 | else |
| 930 | as_bad (_(".tag requires a structure tag")); |
| 931 | ignore_rest_of_line (); |
| 932 | return; |
| 933 | } |
| 934 | if (line_label == NULL) |
| 935 | { |
| 936 | as_bad (_("Label required for .tag")); |
| 937 | ignore_rest_of_line (); |
| 938 | return; |
| 939 | } |
| 940 | else |
| 941 | { |
| 942 | char label[strlen (S_GET_NAME (line_label)) + 1]; |
| 943 | |
| 944 | strcpy (label, S_GET_NAME (line_label)); |
| 945 | if (current_stag != NULL) |
| 946 | stag_add_field (current_stag, label, |
| 947 | abs_section_offset - S_GET_VALUE (current_stag->sym), |
| 948 | stag); |
| 949 | else |
| 950 | { |
| 951 | symbolS *sym = symbol_find (label); |
| 952 | |
| 953 | if (!sym) |
| 954 | { |
| 955 | as_bad (_(".tag target '%s' undefined"), label); |
| 956 | ignore_rest_of_line (); |
| 957 | return; |
| 958 | } |
| 959 | stag_add_field_symbols (stag, S_GET_NAME (sym), |
| 960 | S_GET_VALUE (stag->sym), sym, stag->name); |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | /* Bump by the struct size, but only if we're within a .struct section. */ |
| 965 | if (current_stag != NULL && !current_stag->is_union) |
| 966 | abs_section_offset += stag->size; |
| 967 | |
| 968 | *input_line_pointer = c; |
| 969 | demand_empty_rest_of_line (); |
| 970 | line_label = NULL; |
| 971 | } |
| 972 | |
| 973 | /* Handle all .byte, .char, .double, .field, .float, .half, .int, .long, |
| 974 | .short, .string, .ubyte, .uchar, .uhalf, .uint, .ulong, .ushort, .uword, |
| 975 | and .word. */ |
| 976 | |
| 977 | static void |
| 978 | tic54x_struct_field (type) |
| 979 | int type; |
| 980 | { |
| 981 | int size; |
| 982 | int count = 1; |
| 983 | int new_bitfield_offset = 0; |
| 984 | int field_align = current_stag->current_bitfield_offset != 0; |
| 985 | int longword_align = 0; |
| 986 | |
| 987 | SKIP_WHITESPACE (); |
| 988 | if (!is_end_of_line[(int) *input_line_pointer]) |
| 989 | count = get_absolute_expression (); |
| 990 | |
| 991 | switch (type) |
| 992 | { |
| 993 | case 'b': |
| 994 | case 'B': |
| 995 | case 'c': |
| 996 | case 'C': |
| 997 | case 'h': |
| 998 | case 'H': |
| 999 | case 'i': |
| 1000 | case 'I': |
| 1001 | case 's': |
| 1002 | case 'S': |
| 1003 | case 'w': |
| 1004 | case 'W': |
| 1005 | case '*': /* String. */ |
| 1006 | size = 1; |
| 1007 | break; |
| 1008 | case 'f': |
| 1009 | case 'l': |
| 1010 | case 'L': |
| 1011 | longword_align = 1; |
| 1012 | size = 2; |
| 1013 | break; |
| 1014 | case '.': /* Bitfield. */ |
| 1015 | size = 0; |
| 1016 | if (count < 1 || count > 32) |
| 1017 | { |
| 1018 | as_bad (_(".field count '%d' out of range (1 <= X <= 32)"), count); |
| 1019 | ignore_rest_of_line (); |
| 1020 | return; |
| 1021 | } |
| 1022 | if (current_stag->current_bitfield_offset + count > 16) |
| 1023 | { |
| 1024 | /* Set the appropriate size and new field offset. */ |
| 1025 | if (count == 32) |
| 1026 | { |
| 1027 | size = 2; |
| 1028 | count = 1; |
| 1029 | } |
| 1030 | else if (count > 16) |
| 1031 | { |
| 1032 | size = 1; |
| 1033 | count = 1; |
| 1034 | new_bitfield_offset = count - 16; |
| 1035 | } |
| 1036 | else |
| 1037 | new_bitfield_offset = count; |
| 1038 | } |
| 1039 | else |
| 1040 | { |
| 1041 | field_align = 0; |
| 1042 | new_bitfield_offset = current_stag->current_bitfield_offset + count; |
| 1043 | } |
| 1044 | break; |
| 1045 | default: |
| 1046 | as_bad (_("Unrecognized field type '%c'"), type); |
| 1047 | ignore_rest_of_line (); |
| 1048 | return; |
| 1049 | } |
| 1050 | |
| 1051 | if (field_align) |
| 1052 | { |
| 1053 | /* Align to the actual starting position of the field. */ |
| 1054 | current_stag->current_bitfield_offset = 0; |
| 1055 | ++abs_section_offset; |
| 1056 | } |
| 1057 | /* Align to longword boundary. */ |
| 1058 | if (longword_align && (abs_section_offset & 0x1)) |
| 1059 | ++abs_section_offset; |
| 1060 | |
| 1061 | if (line_label == NULL) |
| 1062 | { |
| 1063 | static int fieldno = 0; |
| 1064 | char fake[] = ".fake_fieldNNNNN"; |
| 1065 | |
| 1066 | sprintf (fake, ".fake_field%d", fieldno++); |
| 1067 | stag_add_field (current_stag, fake, |
| 1068 | abs_section_offset - S_GET_VALUE (current_stag->sym), |
| 1069 | NULL); |
| 1070 | } |
| 1071 | else |
| 1072 | { |
| 1073 | char label[strlen (S_GET_NAME (line_label) + 1)]; |
| 1074 | |
| 1075 | strcpy (label, S_GET_NAME (line_label)); |
| 1076 | stag_add_field (current_stag, label, |
| 1077 | abs_section_offset - S_GET_VALUE (current_stag->sym), |
| 1078 | NULL); |
| 1079 | } |
| 1080 | |
| 1081 | if (current_stag->is_union) |
| 1082 | { |
| 1083 | /* Note we treat the element as if it were an array of COUNT. */ |
| 1084 | if (current_stag->size < (unsigned) size * count) |
| 1085 | current_stag->size = size * count; |
| 1086 | } |
| 1087 | else |
| 1088 | { |
| 1089 | abs_section_offset += (unsigned) size * count; |
| 1090 | current_stag->current_bitfield_offset = new_bitfield_offset; |
| 1091 | } |
| 1092 | line_label = NULL; |
| 1093 | } |
| 1094 | |
| 1095 | /* Handle .byte, .word. .int, .long and all variants. */ |
| 1096 | |
| 1097 | static void |
| 1098 | tic54x_cons (type) |
| 1099 | int type; |
| 1100 | { |
| 1101 | unsigned int c; |
| 1102 | int octets; |
| 1103 | |
| 1104 | /* If we're within a .struct construct, don't actually allocate space. */ |
| 1105 | if (current_stag != NULL) |
| 1106 | { |
| 1107 | tic54x_struct_field (type); |
| 1108 | return; |
| 1109 | } |
| 1110 | |
| 1111 | #ifdef md_flush_pending_output |
| 1112 | md_flush_pending_output (); |
| 1113 | #endif |
| 1114 | |
| 1115 | generate_lineno_debug (); |
| 1116 | |
| 1117 | /* Align long words to long word boundaries (4 octets). */ |
| 1118 | if (type == 'l' || type == 'L') |
| 1119 | { |
| 1120 | frag_align (2, 0, 2); |
| 1121 | /* If there's a label, assign it to the first allocated word. */ |
| 1122 | if (line_label != NULL) |
| 1123 | { |
| 1124 | symbol_set_frag (line_label, frag_now); |
| 1125 | S_SET_VALUE (line_label, frag_now_fix ()); |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | switch (type) |
| 1130 | { |
| 1131 | case 'l': |
| 1132 | case 'L': |
| 1133 | case 'x': |
| 1134 | octets = 4; |
| 1135 | break; |
| 1136 | case 'b': |
| 1137 | case 'B': |
| 1138 | case 'c': |
| 1139 | case 'C': |
| 1140 | octets = 1; |
| 1141 | break; |
| 1142 | default: |
| 1143 | octets = 2; |
| 1144 | break; |
| 1145 | } |
| 1146 | |
| 1147 | do |
| 1148 | { |
| 1149 | if (*input_line_pointer == '"') |
| 1150 | { |
| 1151 | input_line_pointer++; |
| 1152 | while (is_a_char (c = next_char_of_string ())) |
| 1153 | tic54x_emit_char (c); |
| 1154 | know (input_line_pointer[-1] == '\"'); |
| 1155 | } |
| 1156 | else |
| 1157 | { |
| 1158 | expressionS exp; |
| 1159 | |
| 1160 | input_line_pointer = parse_expression (input_line_pointer, &exp); |
| 1161 | if (exp.X_op == O_constant) |
| 1162 | { |
| 1163 | offsetT value = exp.X_add_number; |
| 1164 | /* Truncate overflows. */ |
| 1165 | switch (octets) |
| 1166 | { |
| 1167 | case 1: |
| 1168 | if ((value > 0 && value > 0xFF) |
| 1169 | || (value < 0 && value < - 0x100)) |
| 1170 | as_warn ("Overflow in expression, truncated to 8 bits"); |
| 1171 | break; |
| 1172 | case 2: |
| 1173 | if ((value > 0 && value > 0xFFFF) |
| 1174 | || (value < 0 && value < - 0x10000)) |
| 1175 | as_warn ("Overflow in expression, truncated to 16 bits"); |
| 1176 | break; |
| 1177 | } |
| 1178 | } |
| 1179 | if (exp.X_op != O_constant && octets < 2) |
| 1180 | { |
| 1181 | /* Disallow .byte with a non constant expression that will |
| 1182 | require relocation. */ |
| 1183 | as_bad (_("Relocatable values require at least WORD storage")); |
| 1184 | ignore_rest_of_line (); |
| 1185 | return; |
| 1186 | } |
| 1187 | |
| 1188 | if (exp.X_op != O_constant |
| 1189 | && amode == c_mode |
| 1190 | && octets == 4) |
| 1191 | { |
| 1192 | /* FIXME -- at one point TI tools used to output REL16 |
| 1193 | relocations, but I don't think the latest tools do at all |
| 1194 | The current tools output extended relocations regardless of |
| 1195 | the addresing mode (I actually think that ".c_mode" is |
| 1196 | totally ignored in the latest tools). */ |
| 1197 | amode = far_mode; |
| 1198 | emitting_long = 1; |
| 1199 | emit_expr (&exp, 4); |
| 1200 | emitting_long = 0; |
| 1201 | amode = c_mode; |
| 1202 | } |
| 1203 | else |
| 1204 | { |
| 1205 | emitting_long = octets == 4; |
| 1206 | emit_expr (&exp, (octets == 1) ? 2 : octets); |
| 1207 | emitting_long = 0; |
| 1208 | } |
| 1209 | } |
| 1210 | } |
| 1211 | while (*input_line_pointer++ == ','); |
| 1212 | |
| 1213 | input_line_pointer--; /* Put terminator back into stream. */ |
| 1214 | demand_empty_rest_of_line (); |
| 1215 | } |
| 1216 | |
| 1217 | /* .global <symbol>[,...,<symbolN>] |
| 1218 | .def <symbol>[,...,<symbolN>] |
| 1219 | .ref <symbol>[,...,<symbolN>] |
| 1220 | |
| 1221 | These all identify global symbols. |
| 1222 | |
| 1223 | .def means the symbol is defined in the current module and can be accessed |
| 1224 | by other files. The symbol should be placed in the symbol table. |
| 1225 | |
| 1226 | .ref means the symbol is used in the current module but defined in another |
| 1227 | module. The linker is to resolve this symbol's definition at link time. |
| 1228 | |
| 1229 | .global should act as a .ref or .def, as needed. |
| 1230 | |
| 1231 | global, def and ref all have symbol storage classes of C_EXT. |
| 1232 | |
| 1233 | I can't identify any difference in how the "other" c54x assembler treats |
| 1234 | these, so we ignore the type here. */ |
| 1235 | |
| 1236 | void |
| 1237 | tic54x_global (type) |
| 1238 | int type; |
| 1239 | { |
| 1240 | char *name; |
| 1241 | int c; |
| 1242 | symbolS *symbolP; |
| 1243 | |
| 1244 | if (type == 'r') |
| 1245 | as_warn (_("Use of .def/.ref is deprecated. Use .global instead")); |
| 1246 | |
| 1247 | ILLEGAL_WITHIN_STRUCT (); |
| 1248 | |
| 1249 | do |
| 1250 | { |
| 1251 | name = input_line_pointer; |
| 1252 | c = get_symbol_end (); |
| 1253 | symbolP = symbol_find_or_make (name); |
| 1254 | |
| 1255 | *input_line_pointer = c; |
| 1256 | S_SET_STORAGE_CLASS (symbolP, C_EXT); |
| 1257 | if (c == ',') |
| 1258 | { |
| 1259 | input_line_pointer++; |
| 1260 | if (is_end_of_line[(int) *input_line_pointer]) |
| 1261 | c = *input_line_pointer; |
| 1262 | } |
| 1263 | } |
| 1264 | while (c == ','); |
| 1265 | |
| 1266 | demand_empty_rest_of_line (); |
| 1267 | } |
| 1268 | |
| 1269 | /* Remove the symbol from the local label hash lookup. */ |
| 1270 | |
| 1271 | static void |
| 1272 | tic54x_remove_local_label (key, value) |
| 1273 | const char *key; |
| 1274 | PTR value ATTRIBUTE_UNUSED; |
| 1275 | { |
| 1276 | PTR *elem = hash_delete (local_label_hash[macro_level], key); |
| 1277 | free (elem); |
| 1278 | } |
| 1279 | |
| 1280 | /* Reset all local labels. */ |
| 1281 | |
| 1282 | static void |
| 1283 | tic54x_clear_local_labels (ignored) |
| 1284 | int ignored ATTRIBUTE_UNUSED; |
| 1285 | { |
| 1286 | hash_traverse (local_label_hash[macro_level], tic54x_remove_local_label); |
| 1287 | } |
| 1288 | |
| 1289 | /* .text |
| 1290 | .data |
| 1291 | .sect "section name" |
| 1292 | |
| 1293 | Initialized section |
| 1294 | make sure local labels get cleared when changing sections |
| 1295 | |
| 1296 | ARG is 't' for text, 'd' for data, or '*' for a named section |
| 1297 | |
| 1298 | For compatibility, '*' sections are SEC_CODE if instructions are |
| 1299 | encountered, or SEC_DATA if not. |
| 1300 | */ |
| 1301 | |
| 1302 | static void |
| 1303 | tic54x_sect (arg) |
| 1304 | int arg; |
| 1305 | { |
| 1306 | ILLEGAL_WITHIN_STRUCT (); |
| 1307 | |
| 1308 | /* Local labels are cleared when changing sections. */ |
| 1309 | tic54x_clear_local_labels (0); |
| 1310 | |
| 1311 | if (arg == 't') |
| 1312 | s_text (0); |
| 1313 | else if (arg == 'd') |
| 1314 | s_data (0); |
| 1315 | else |
| 1316 | { |
| 1317 | char *name = NULL; |
| 1318 | int len; |
| 1319 | |
| 1320 | /* If there are quotes, remove them. */ |
| 1321 | if (*input_line_pointer == '"') |
| 1322 | { |
| 1323 | name = demand_copy_C_string (&len); |
| 1324 | demand_empty_rest_of_line (); |
| 1325 | name = strcpy (xmalloc (len + 10), name); |
| 1326 | } |
| 1327 | else |
| 1328 | { |
| 1329 | int c; |
| 1330 | name = input_line_pointer; |
| 1331 | c = get_symbol_end (); |
| 1332 | len = strlen(name); |
| 1333 | name = strcpy (xmalloc (len + 10), name); |
| 1334 | *input_line_pointer = c; |
| 1335 | demand_empty_rest_of_line (); |
| 1336 | } |
| 1337 | /* Make sure all named initialized sections flagged properly. If we |
| 1338 | encounter instructions, we'll flag it with SEC_CODE as well. */ |
| 1339 | strcat (name, ",\"w\"\n"); |
| 1340 | input_scrub_insert_line (name); |
| 1341 | obj_coff_section (0); |
| 1342 | |
| 1343 | /* If there was a line label, make sure that it gets assigned the proper |
| 1344 | section. This is for compatibility, even though the actual behavior |
| 1345 | is not explicitly defined. For consistency, we make .sect behave |
| 1346 | like .usect, since that is probably what people expect. */ |
| 1347 | if (line_label != NULL) |
| 1348 | { |
| 1349 | S_SET_SEGMENT (line_label, now_seg); |
| 1350 | symbol_set_frag (line_label, frag_now); |
| 1351 | S_SET_VALUE (line_label, frag_now_fix ()); |
| 1352 | if (S_GET_STORAGE_CLASS (line_label) != C_EXT) |
| 1353 | S_SET_STORAGE_CLASS (line_label, C_LABEL); |
| 1354 | } |
| 1355 | } |
| 1356 | } |
| 1357 | |
| 1358 | /* [symbol] .space space_in_bits |
| 1359 | [symbol] .bes space_in_bits |
| 1360 | BES puts the symbol at the *last* word allocated |
| 1361 | |
| 1362 | cribbed from s_space. */ |
| 1363 | |
| 1364 | static void |
| 1365 | tic54x_space (arg) |
| 1366 | int arg; |
| 1367 | { |
| 1368 | expressionS exp; |
| 1369 | char *p = 0; |
| 1370 | int octets = 0; |
| 1371 | long words; |
| 1372 | int bits_per_byte = (OCTETS_PER_BYTE * 8); |
| 1373 | int bit_offset = 0; |
| 1374 | symbolS *label = line_label; |
| 1375 | int bes = arg; |
| 1376 | |
| 1377 | ILLEGAL_WITHIN_STRUCT (); |
| 1378 | |
| 1379 | #ifdef md_flush_pending_output |
| 1380 | md_flush_pending_output (); |
| 1381 | #endif |
| 1382 | |
| 1383 | /* Read the bit count. */ |
| 1384 | expression (&exp); |
| 1385 | |
| 1386 | /* Some expressions are unresolvable until later in the assembly pass; |
| 1387 | postpone until relaxation/fixup. we also have to postpone if a previous |
| 1388 | partial allocation has not been completed yet. */ |
| 1389 | if (exp.X_op != O_constant || frag_bit_offset (frag_now, now_seg) == -1) |
| 1390 | { |
| 1391 | struct bit_info *bi = xmalloc (sizeof (struct bit_info)); |
| 1392 | char *p; |
| 1393 | |
| 1394 | bi->seg = now_seg; |
| 1395 | bi->type = bes; |
| 1396 | bi->sym = label; |
| 1397 | p = frag_var (rs_machine_dependent, |
| 1398 | 65536 * 2, 1, (relax_substateT) 0, |
| 1399 | make_expr_symbol (&exp), (offsetT) 0, |
| 1400 | (char *) bi); |
| 1401 | if (p) |
| 1402 | *p = 0; |
| 1403 | |
| 1404 | return; |
| 1405 | } |
| 1406 | |
| 1407 | /* Reduce the required size by any bit offsets currently left over |
| 1408 | from a previous .space/.bes/.field directive. */ |
| 1409 | bit_offset = frag_now->tc_frag_data; |
| 1410 | if (bit_offset != 0 && bit_offset < 16) |
| 1411 | { |
| 1412 | int spare_bits = bits_per_byte - bit_offset; |
| 1413 | |
| 1414 | if (spare_bits >= exp.X_add_number) |
| 1415 | { |
| 1416 | /* Don't have to do anything; sufficient bits have already been |
| 1417 | allocated; just point the label to the right place. */ |
| 1418 | if (label != NULL) |
| 1419 | { |
| 1420 | symbol_set_frag (label, frag_now); |
| 1421 | S_SET_VALUE (label, frag_now_fix () - 1); |
| 1422 | label = NULL; |
| 1423 | } |
| 1424 | frag_now->tc_frag_data += exp.X_add_number; |
| 1425 | goto getout; |
| 1426 | } |
| 1427 | exp.X_add_number -= spare_bits; |
| 1428 | /* Set the label to point to the first word allocated, which in this |
| 1429 | case is the previous word, which was only partially filled. */ |
| 1430 | if (!bes && label != NULL) |
| 1431 | { |
| 1432 | symbol_set_frag (label, frag_now); |
| 1433 | S_SET_VALUE (label, frag_now_fix () - 1); |
| 1434 | label = NULL; |
| 1435 | } |
| 1436 | } |
| 1437 | /* Convert bits to bytes/words and octets, rounding up. */ |
| 1438 | words = ((exp.X_add_number + bits_per_byte - 1) / bits_per_byte); |
| 1439 | /* How many do we have left over? */ |
| 1440 | bit_offset = exp.X_add_number % bits_per_byte; |
| 1441 | octets = words * OCTETS_PER_BYTE; |
| 1442 | if (octets < 0) |
| 1443 | { |
| 1444 | as_warn (_(".space/.bes repeat count is negative, ignored")); |
| 1445 | goto getout; |
| 1446 | } |
| 1447 | else if (octets == 0) |
| 1448 | { |
| 1449 | as_warn (_(".space/.bes repeat count is zero, ignored")); |
| 1450 | goto getout; |
| 1451 | } |
| 1452 | |
| 1453 | /* If we are in the absolute section, just bump the offset. */ |
| 1454 | if (now_seg == absolute_section) |
| 1455 | { |
| 1456 | abs_section_offset += words; |
| 1457 | if (bes && label != NULL) |
| 1458 | S_SET_VALUE (label, abs_section_offset - 1); |
| 1459 | frag_now->tc_frag_data = bit_offset; |
| 1460 | goto getout; |
| 1461 | } |
| 1462 | |
| 1463 | if (!need_pass_2) |
| 1464 | p = frag_var (rs_fill, 1, 1, |
| 1465 | (relax_substateT) 0, (symbolS *) 0, |
| 1466 | (offsetT) octets, (char *) 0); |
| 1467 | |
| 1468 | /* Make note of how many bits of this word we've allocated so far. */ |
| 1469 | frag_now->tc_frag_data = bit_offset; |
| 1470 | |
| 1471 | /* .bes puts label at *last* word allocated. */ |
| 1472 | if (bes && label != NULL) |
| 1473 | { |
| 1474 | symbol_set_frag (label, frag_now); |
| 1475 | S_SET_VALUE (label, frag_now_fix () - 1); |
| 1476 | } |
| 1477 | |
| 1478 | if (p) |
| 1479 | *p = 0; |
| 1480 | |
| 1481 | getout: |
| 1482 | |
| 1483 | demand_empty_rest_of_line (); |
| 1484 | } |
| 1485 | |
| 1486 | /* [symbol] .usect "section-name", size-in-words |
| 1487 | [, [blocking-flag] [, alignment-flag]] |
| 1488 | |
| 1489 | Unitialized section. |
| 1490 | Non-zero blocking means that if the section would cross a page (128-word) |
| 1491 | boundary, it will be page-aligned. |
| 1492 | Non-zero alignment aligns on a longword boundary. |
| 1493 | |
| 1494 | Has no effect on the current section. */ |
| 1495 | |
| 1496 | static void |
| 1497 | tic54x_usect (x) |
| 1498 | int x ATTRIBUTE_UNUSED; |
| 1499 | { |
| 1500 | char c; |
| 1501 | char *name; |
| 1502 | char *section_name; |
| 1503 | char *p; |
| 1504 | segT seg; |
| 1505 | int size, blocking_flag, alignment_flag; |
| 1506 | segT current_seg; |
| 1507 | subsegT current_subseg; |
| 1508 | flagword flags; |
| 1509 | |
| 1510 | ILLEGAL_WITHIN_STRUCT (); |
| 1511 | |
| 1512 | current_seg = now_seg; /* Save current seg. */ |
| 1513 | current_subseg = now_subseg; /* Save current subseg. */ |
| 1514 | |
| 1515 | if (*input_line_pointer == '"') |
| 1516 | input_line_pointer++; |
| 1517 | section_name = input_line_pointer; |
| 1518 | c = get_symbol_end (); /* Get terminator. */ |
| 1519 | input_line_pointer++; /* Skip null symbol terminator. */ |
| 1520 | name = xmalloc (input_line_pointer - section_name + 1); |
| 1521 | strcpy (name, section_name); |
| 1522 | |
| 1523 | if (*input_line_pointer == ',') |
| 1524 | ++input_line_pointer; |
| 1525 | else if (c != ',') |
| 1526 | { |
| 1527 | as_bad (_("Missing size argument")); |
| 1528 | ignore_rest_of_line (); |
| 1529 | return; |
| 1530 | } |
| 1531 | |
| 1532 | size = get_absolute_expression (); |
| 1533 | |
| 1534 | /* Read a possibly present third argument (blocking flag). */ |
| 1535 | if (*input_line_pointer == ',') |
| 1536 | { |
| 1537 | ++input_line_pointer; |
| 1538 | if (*input_line_pointer != ',') |
| 1539 | blocking_flag = get_absolute_expression (); |
| 1540 | else |
| 1541 | blocking_flag = 0; |
| 1542 | |
| 1543 | /* Read a possibly present fourth argument (alignment flag). */ |
| 1544 | if (*input_line_pointer == ',') |
| 1545 | { |
| 1546 | ++input_line_pointer; |
| 1547 | alignment_flag = get_absolute_expression (); |
| 1548 | } |
| 1549 | else |
| 1550 | alignment_flag = 0; |
| 1551 | } |
| 1552 | else |
| 1553 | blocking_flag = alignment_flag = 0; |
| 1554 | |
| 1555 | seg = subseg_new (name, 0); |
| 1556 | flags = bfd_get_section_flags (stdoutput, seg) | SEC_ALLOC; |
| 1557 | |
| 1558 | if (alignment_flag) |
| 1559 | { |
| 1560 | /* s_align eats end of line; restore it. */ |
| 1561 | s_align_bytes (4); |
| 1562 | --input_line_pointer; |
| 1563 | } |
| 1564 | |
| 1565 | if (line_label != NULL) |
| 1566 | { |
| 1567 | S_SET_SEGMENT (line_label, seg); |
| 1568 | symbol_set_frag (line_label, frag_now); |
| 1569 | S_SET_VALUE (line_label, frag_now_fix ()); |
| 1570 | /* Set scl to label, since that's what TI does. */ |
| 1571 | if (S_GET_STORAGE_CLASS (line_label) != C_EXT) |
| 1572 | S_SET_STORAGE_CLASS (line_label, C_LABEL); |
| 1573 | } |
| 1574 | |
| 1575 | seg_info (seg)->bss = 1; /* Uninitialized data. */ |
| 1576 | |
| 1577 | p = frag_var (rs_fill, 1, 1, |
| 1578 | (relax_substateT) 0, (symbolS *) line_label, |
| 1579 | size * OCTETS_PER_BYTE, (char *) 0); |
| 1580 | *p = 0; |
| 1581 | |
| 1582 | if (blocking_flag) |
| 1583 | flags |= SEC_BLOCK; |
| 1584 | |
| 1585 | if (!bfd_set_section_flags (stdoutput, seg, flags)) |
| 1586 | as_warn ("Error setting flags for \"%s\": %s", name, |
| 1587 | bfd_errmsg (bfd_get_error ())); |
| 1588 | |
| 1589 | subseg_set (current_seg, current_subseg); /* Restore current seg. */ |
| 1590 | demand_empty_rest_of_line (); |
| 1591 | } |
| 1592 | |
| 1593 | static enum cpu_version |
| 1594 | lookup_version (ver) |
| 1595 | const char *ver; |
| 1596 | { |
| 1597 | enum cpu_version version = VNONE; |
| 1598 | |
| 1599 | if (ver[0] == '5' && ver[1] == '4') |
| 1600 | { |
| 1601 | if (strlen (ver) == 3 |
| 1602 | && (ver[2] == '1' || ver[2] == '2' || ver[2] == '3' |
| 1603 | || ver[2] == '5' || ver[2] == '8' || ver[2] == '9')) |
| 1604 | version = ver[2] - '0'; |
| 1605 | else if (strlen (ver) == 5 |
| 1606 | && TOUPPER (ver[3]) == 'L' |
| 1607 | && TOUPPER (ver[4]) == 'P' |
| 1608 | && (ver[2] == '5' || ver[2] == '6')) |
| 1609 | version = ver[2] - '0' + 10; |
| 1610 | } |
| 1611 | |
| 1612 | return version; |
| 1613 | } |
| 1614 | |
| 1615 | static void |
| 1616 | set_cpu (version) |
| 1617 | enum cpu_version version; |
| 1618 | { |
| 1619 | cpu = version; |
| 1620 | if (version == V545LP || version == V546LP) |
| 1621 | { |
| 1622 | symbolS *symbolP = symbol_new ("__allow_lp", absolute_section, |
| 1623 | (valueT) 1, &zero_address_frag); |
| 1624 | SF_SET_LOCAL (symbolP); |
| 1625 | symbol_table_insert (symbolP); |
| 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | /* .version cpu-version |
| 1630 | cpu-version may be one of the following: |
| 1631 | 541 |
| 1632 | 542 |
| 1633 | 543 |
| 1634 | 545 |
| 1635 | 545LP |
| 1636 | 546LP |
| 1637 | 548 |
| 1638 | 549 |
| 1639 | |
| 1640 | This is for compatibility only. It currently has no affect on assembly. */ |
| 1641 | static int cpu_needs_set = 1; |
| 1642 | |
| 1643 | static void |
| 1644 | tic54x_version (x) |
| 1645 | int x ATTRIBUTE_UNUSED; |
| 1646 | { |
| 1647 | enum cpu_version version = VNONE; |
| 1648 | enum cpu_version old_version = cpu; |
| 1649 | int c; |
| 1650 | char *ver; |
| 1651 | |
| 1652 | ILLEGAL_WITHIN_STRUCT (); |
| 1653 | |
| 1654 | SKIP_WHITESPACE (); |
| 1655 | ver = input_line_pointer; |
| 1656 | while (!is_end_of_line[(int) *input_line_pointer]) |
| 1657 | ++input_line_pointer; |
| 1658 | c = *input_line_pointer; |
| 1659 | *input_line_pointer = 0; |
| 1660 | |
| 1661 | version = lookup_version (ver); |
| 1662 | |
| 1663 | if (cpu != VNONE && cpu != version) |
| 1664 | as_warn (_("CPU version has already been set")); |
| 1665 | |
| 1666 | if (version == VNONE) |
| 1667 | { |
| 1668 | as_bad (_("Unrecognized version '%s'"), ver); |
| 1669 | ignore_rest_of_line (); |
| 1670 | return; |
| 1671 | } |
| 1672 | else if (assembly_begun && version != old_version) |
| 1673 | { |
| 1674 | as_bad (_("Changing of CPU version on the fly not supported")); |
| 1675 | ignore_rest_of_line (); |
| 1676 | return; |
| 1677 | } |
| 1678 | |
| 1679 | set_cpu (version); |
| 1680 | |
| 1681 | *input_line_pointer = c; |
| 1682 | demand_empty_rest_of_line (); |
| 1683 | } |
| 1684 | |
| 1685 | /* 'f' = float, 'x' = xfloat, 'd' = double, 'l' = ldouble. */ |
| 1686 | |
| 1687 | static void |
| 1688 | tic54x_float_cons (type) |
| 1689 | int type; |
| 1690 | { |
| 1691 | if (current_stag != 0) |
| 1692 | tic54x_struct_field ('f'); |
| 1693 | |
| 1694 | #ifdef md_flush_pending_output |
| 1695 | md_flush_pending_output (); |
| 1696 | #endif |
| 1697 | |
| 1698 | /* Align to long word boundary (4 octets) unless it's ".xfloat". */ |
| 1699 | if (type != 'x') |
| 1700 | { |
| 1701 | frag_align (2, 0, 2); |
| 1702 | /* If there's a label, assign it to the first allocated word. */ |
| 1703 | if (line_label != NULL) |
| 1704 | { |
| 1705 | symbol_set_frag (line_label, frag_now); |
| 1706 | S_SET_VALUE (line_label, frag_now_fix ()); |
| 1707 | } |
| 1708 | } |
| 1709 | |
| 1710 | float_cons ('f'); |
| 1711 | } |
| 1712 | |
| 1713 | /* The argument is capitalized if it should be zero-terminated |
| 1714 | 's' is normal string with upper 8-bits zero-filled, 'p' is packed. |
| 1715 | Code copied from stringer, and slightly modified so that strings are packed |
| 1716 | and encoded into the correct octets. */ |
| 1717 | |
| 1718 | static void |
| 1719 | tic54x_stringer (type) |
| 1720 | int type; |
| 1721 | { |
| 1722 | unsigned int c; |
| 1723 | char *start; |
| 1724 | int append_zero = type == 'S' || type == 'P'; |
| 1725 | int packed = type == 'p' || type == 'P'; |
| 1726 | int last_char = -1; /* Packed strings need two bytes at a time to encode. */ |
| 1727 | |
| 1728 | if (current_stag != NULL) |
| 1729 | { |
| 1730 | tic54x_struct_field ('*'); |
| 1731 | return; |
| 1732 | } |
| 1733 | |
| 1734 | #ifdef md_flush_pending_output |
| 1735 | md_flush_pending_output (); |
| 1736 | #endif |
| 1737 | |
| 1738 | c = ','; /* Do loop. */ |
| 1739 | while (c == ',') |
| 1740 | { |
| 1741 | SKIP_WHITESPACE (); |
| 1742 | switch (*input_line_pointer) |
| 1743 | { |
| 1744 | default: |
| 1745 | { |
| 1746 | unsigned short value = get_absolute_expression (); |
| 1747 | FRAG_APPEND_1_CHAR ( value & 0xFF); |
| 1748 | FRAG_APPEND_1_CHAR ((value >> 8) & 0xFF); |
| 1749 | break; |
| 1750 | } |
| 1751 | case '\"': |
| 1752 | ++input_line_pointer; /* -> 1st char of string. */ |
| 1753 | start = input_line_pointer; |
| 1754 | while (is_a_char (c = next_char_of_string ())) |
| 1755 | { |
| 1756 | if (!packed) |
| 1757 | { |
| 1758 | FRAG_APPEND_1_CHAR (c); |
| 1759 | FRAG_APPEND_1_CHAR (0); |
| 1760 | } |
| 1761 | else |
| 1762 | { |
| 1763 | /* Packed strings are filled MS octet first. */ |
| 1764 | if (last_char == -1) |
| 1765 | last_char = c; |
| 1766 | else |
| 1767 | { |
| 1768 | FRAG_APPEND_1_CHAR (c); |
| 1769 | FRAG_APPEND_1_CHAR (last_char); |
| 1770 | last_char = -1; |
| 1771 | } |
| 1772 | } |
| 1773 | } |
| 1774 | if (append_zero) |
| 1775 | { |
| 1776 | if (packed && last_char != -1) |
| 1777 | { |
| 1778 | FRAG_APPEND_1_CHAR (0); |
| 1779 | FRAG_APPEND_1_CHAR (last_char); |
| 1780 | last_char = -1; |
| 1781 | } |
| 1782 | else |
| 1783 | { |
| 1784 | FRAG_APPEND_1_CHAR (0); |
| 1785 | FRAG_APPEND_1_CHAR (0); |
| 1786 | } |
| 1787 | } |
| 1788 | know (input_line_pointer[-1] == '\"'); |
| 1789 | break; |
| 1790 | } |
| 1791 | SKIP_WHITESPACE (); |
| 1792 | c = *input_line_pointer; |
| 1793 | if (!is_end_of_line[c]) |
| 1794 | ++input_line_pointer; |
| 1795 | } |
| 1796 | |
| 1797 | /* Finish up any leftover packed string. */ |
| 1798 | if (packed && last_char != -1) |
| 1799 | { |
| 1800 | FRAG_APPEND_1_CHAR (0); |
| 1801 | FRAG_APPEND_1_CHAR (last_char); |
| 1802 | } |
| 1803 | demand_empty_rest_of_line (); |
| 1804 | } |
| 1805 | |
| 1806 | static void |
| 1807 | tic54x_p2align (arg) |
| 1808 | int arg ATTRIBUTE_UNUSED; |
| 1809 | { |
| 1810 | as_bad (_("p2align not supported on this target")); |
| 1811 | } |
| 1812 | |
| 1813 | static void |
| 1814 | tic54x_align_words (arg) |
| 1815 | int arg; |
| 1816 | { |
| 1817 | /* Only ".align" with no argument is allowed within .struct/.union. */ |
| 1818 | int count = arg; |
| 1819 | |
| 1820 | if (!is_end_of_line[(int) *input_line_pointer]) |
| 1821 | { |
| 1822 | if (arg == 2) |
| 1823 | as_warn (_("Argument to .even ignored")); |
| 1824 | else |
| 1825 | count = get_absolute_expression (); |
| 1826 | } |
| 1827 | |
| 1828 | if (current_stag != NULL && arg == 128) |
| 1829 | { |
| 1830 | if (current_stag->current_bitfield_offset != 0) |
| 1831 | { |
| 1832 | current_stag->current_bitfield_offset = 0; |
| 1833 | ++abs_section_offset; |
| 1834 | } |
| 1835 | demand_empty_rest_of_line (); |
| 1836 | return; |
| 1837 | } |
| 1838 | |
| 1839 | ILLEGAL_WITHIN_STRUCT (); |
| 1840 | |
| 1841 | s_align_bytes (count << 1); |
| 1842 | } |
| 1843 | |
| 1844 | /* Initialize multiple-bit fields withing a single word of memory. */ |
| 1845 | |
| 1846 | static void |
| 1847 | tic54x_field (ignore) |
| 1848 | int ignore ATTRIBUTE_UNUSED; |
| 1849 | { |
| 1850 | expressionS exp; |
| 1851 | int size = 16; |
| 1852 | char *p; |
| 1853 | valueT value; |
| 1854 | symbolS *label = line_label; |
| 1855 | |
| 1856 | if (current_stag != NULL) |
| 1857 | { |
| 1858 | tic54x_struct_field ('.'); |
| 1859 | return; |
| 1860 | } |
| 1861 | |
| 1862 | input_line_pointer = parse_expression (input_line_pointer, &exp); |
| 1863 | |
| 1864 | if (*input_line_pointer == ',') |
| 1865 | { |
| 1866 | ++input_line_pointer; |
| 1867 | size = get_absolute_expression (); |
| 1868 | if (size < 1 || size > 32) |
| 1869 | { |
| 1870 | as_bad (_("Invalid field size, must be from 1 to 32")); |
| 1871 | ignore_rest_of_line (); |
| 1872 | return; |
| 1873 | } |
| 1874 | } |
| 1875 | |
| 1876 | /* Truncate values to the field width. */ |
| 1877 | if (exp.X_op != O_constant) |
| 1878 | { |
| 1879 | /* If the expression value is relocatable, the field size *must* |
| 1880 | be 16. */ |
| 1881 | if (size != 16) |
| 1882 | { |
| 1883 | as_bad (_("field size must be 16 when value is relocatable")); |
| 1884 | ignore_rest_of_line (); |
| 1885 | return; |
| 1886 | } |
| 1887 | |
| 1888 | frag_now->tc_frag_data = 0; |
| 1889 | emit_expr (&exp, 2); |
| 1890 | } |
| 1891 | else |
| 1892 | { |
| 1893 | unsigned long fmask = (size == 32) ? 0xFFFFFFFF : (1ul << size) - 1; |
| 1894 | |
| 1895 | value = exp.X_add_number; |
| 1896 | exp.X_add_number &= fmask; |
| 1897 | if (value != (valueT) exp.X_add_number) |
| 1898 | as_warn (_("field value truncated")); |
| 1899 | value = exp.X_add_number; |
| 1900 | /* Bits are stored MS first. */ |
| 1901 | while (size >= 16) |
| 1902 | { |
| 1903 | frag_now->tc_frag_data = 0; |
| 1904 | p = frag_more (2); |
| 1905 | md_number_to_chars (p, (value >> (size - 16)) & 0xFFFF, 2); |
| 1906 | size -= 16; |
| 1907 | } |
| 1908 | if (size > 0) |
| 1909 | { |
| 1910 | int bit_offset = frag_bit_offset (frag_now, now_seg); |
| 1911 | |
| 1912 | fragS *alloc_frag = bit_offset_frag (frag_now, now_seg); |
| 1913 | if (bit_offset == -1) |
| 1914 | { |
| 1915 | struct bit_info *bi = xmalloc (sizeof (struct bit_info)); |
| 1916 | /* We don't know the previous offset at this time, so store the |
| 1917 | info we need and figure it out later. */ |
| 1918 | expressionS size_exp; |
| 1919 | |
| 1920 | size_exp.X_op = O_constant; |
| 1921 | size_exp.X_add_number = size; |
| 1922 | bi->seg = now_seg; |
| 1923 | bi->type = TYPE_FIELD; |
| 1924 | bi->value = value; |
| 1925 | p = frag_var (rs_machine_dependent, |
| 1926 | 4, 1, (relax_substateT) 0, |
| 1927 | make_expr_symbol (&size_exp), (offsetT) 0, |
| 1928 | (char *) bi); |
| 1929 | goto getout; |
| 1930 | } |
| 1931 | else if (bit_offset == 0 || bit_offset + size > 16) |
| 1932 | { |
| 1933 | /* Align a new field. */ |
| 1934 | p = frag_more (2); |
| 1935 | frag_now->tc_frag_data = 0; |
| 1936 | alloc_frag = frag_now; |
| 1937 | } |
| 1938 | else |
| 1939 | { |
| 1940 | /* Put the new value entirely within the existing one. */ |
| 1941 | p = alloc_frag == frag_now ? |
| 1942 | frag_now->fr_literal + frag_now_fix_octets () - 2 : |
| 1943 | alloc_frag->fr_literal; |
| 1944 | if (label != NULL) |
| 1945 | { |
| 1946 | symbol_set_frag (label, alloc_frag); |
| 1947 | if (alloc_frag == frag_now) |
| 1948 | S_SET_VALUE (label, frag_now_fix () - 1); |
| 1949 | label = NULL; |
| 1950 | } |
| 1951 | } |
| 1952 | value <<= 16 - alloc_frag->tc_frag_data - size; |
| 1953 | |
| 1954 | /* OR in existing value. */ |
| 1955 | if (alloc_frag->tc_frag_data) |
| 1956 | value |= ((unsigned short) p[1] << 8) | p[0]; |
| 1957 | md_number_to_chars (p, value, 2); |
| 1958 | alloc_frag->tc_frag_data += size; |
| 1959 | if (alloc_frag->tc_frag_data == 16) |
| 1960 | alloc_frag->tc_frag_data = 0; |
| 1961 | } |
| 1962 | } |
| 1963 | getout: |
| 1964 | demand_empty_rest_of_line (); |
| 1965 | } |
| 1966 | |
| 1967 | /* Ideally, we want to check SEC_LOAD and SEC_HAS_CONTENTS, but those aren't |
| 1968 | available yet. seg_info ()->bss is the next best thing. */ |
| 1969 | |
| 1970 | static int |
| 1971 | tic54x_initialized_section (seg) |
| 1972 | segT seg; |
| 1973 | { |
| 1974 | return !seg_info (seg)->bss; |
| 1975 | } |
| 1976 | |
| 1977 | /* .clink ["section name"] |
| 1978 | |
| 1979 | Marks the section as conditionally linked (link only if contents are |
| 1980 | referenced elsewhere. |
| 1981 | Without a name, refers to the current initialized section. |
| 1982 | Name is required for uninitialized sections. */ |
| 1983 | |
| 1984 | static void |
| 1985 | tic54x_clink (ignored) |
| 1986 | int ignored ATTRIBUTE_UNUSED; |
| 1987 | { |
| 1988 | segT seg = now_seg; |
| 1989 | |
| 1990 | ILLEGAL_WITHIN_STRUCT (); |
| 1991 | |
| 1992 | if (*input_line_pointer == '\"') |
| 1993 | { |
| 1994 | char *section_name = ++input_line_pointer; |
| 1995 | char *name; |
| 1996 | |
| 1997 | while (is_a_char (next_char_of_string ())) |
| 1998 | ; |
| 1999 | know (input_line_pointer[-1] == '\"'); |
| 2000 | input_line_pointer[-1] = 0; |
| 2001 | name = xmalloc (input_line_pointer - section_name + 1); |
| 2002 | strcpy (name, section_name); |
| 2003 | |
| 2004 | seg = bfd_get_section_by_name (stdoutput, name); |
| 2005 | if (seg == NULL) |
| 2006 | { |
| 2007 | as_bad (_("Unrecognized section '%s'"), section_name); |
| 2008 | ignore_rest_of_line (); |
| 2009 | return; |
| 2010 | } |
| 2011 | } |
| 2012 | else |
| 2013 | { |
| 2014 | if (!tic54x_initialized_section (seg)) |
| 2015 | { |
| 2016 | as_bad (_("Current section is unitialized, " |
| 2017 | "section name required for .clink")); |
| 2018 | ignore_rest_of_line (); |
| 2019 | return; |
| 2020 | } |
| 2021 | } |
| 2022 | |
| 2023 | seg->flags |= SEC_CLINK; |
| 2024 | |
| 2025 | demand_empty_rest_of_line (); |
| 2026 | } |
| 2027 | |
| 2028 | /* Change the default include directory to be the current source file's |
| 2029 | directory, instead of the current working directory. If DOT is non-zero, |
| 2030 | set to "." instead. */ |
| 2031 | |
| 2032 | static void |
| 2033 | tic54x_set_default_include (dot) |
| 2034 | int dot; |
| 2035 | { |
| 2036 | char *dir = "."; |
| 2037 | char *tmp = NULL; |
| 2038 | |
| 2039 | if (!dot) |
| 2040 | { |
| 2041 | char *curfile; |
| 2042 | unsigned lineno; |
| 2043 | |
| 2044 | as_where (&curfile, &lineno); |
| 2045 | dir = strcpy (xmalloc (strlen (curfile) + 1), curfile); |
| 2046 | tmp = strrchr (dir, '/'); |
| 2047 | } |
| 2048 | if (tmp != NULL) |
| 2049 | { |
| 2050 | int len; |
| 2051 | |
| 2052 | *tmp = '\0'; |
| 2053 | len = strlen (dir); |
| 2054 | if (include_dir_count == 0) |
| 2055 | { |
| 2056 | include_dirs = (char **) xmalloc (sizeof (*include_dirs)); |
| 2057 | include_dir_count = 1; |
| 2058 | } |
| 2059 | include_dirs[0] = dir; |
| 2060 | if (len > include_dir_maxlen) |
| 2061 | include_dir_maxlen = len; |
| 2062 | } |
| 2063 | else if (include_dirs != NULL) |
| 2064 | include_dirs[0] = "."; |
| 2065 | } |
| 2066 | |
| 2067 | /* .include "filename" | filename |
| 2068 | .copy "filename" | filename |
| 2069 | |
| 2070 | FIXME 'include' file should be omitted from any output listing, |
| 2071 | 'copy' should be included in any output listing |
| 2072 | FIXME -- prevent any included files from changing listing (compat only) |
| 2073 | FIXME -- need to include source file directory in search path; what's a |
| 2074 | good way to do this? |
| 2075 | |
| 2076 | Entering/exiting included/copied file clears all local labels. */ |
| 2077 | |
| 2078 | static void |
| 2079 | tic54x_include (ignored) |
| 2080 | int ignored ATTRIBUTE_UNUSED; |
| 2081 | { |
| 2082 | char newblock[] = " .newblock\n"; |
| 2083 | char *filename; |
| 2084 | char *input; |
| 2085 | int len, c = -1; |
| 2086 | |
| 2087 | ILLEGAL_WITHIN_STRUCT (); |
| 2088 | |
| 2089 | SKIP_WHITESPACE (); |
| 2090 | |
| 2091 | if (*input_line_pointer == '"') |
| 2092 | { |
| 2093 | filename = demand_copy_C_string (&len); |
| 2094 | demand_empty_rest_of_line (); |
| 2095 | } |
| 2096 | else |
| 2097 | { |
| 2098 | filename = input_line_pointer; |
| 2099 | while (!is_end_of_line[(int) *input_line_pointer]) |
| 2100 | ++input_line_pointer; |
| 2101 | c = *input_line_pointer; |
| 2102 | *input_line_pointer = '\0'; |
| 2103 | filename = strcpy (xmalloc (strlen (filename) + 1), filename); |
| 2104 | *input_line_pointer = c; |
| 2105 | demand_empty_rest_of_line (); |
| 2106 | } |
| 2107 | /* Insert a partial line with the filename (for the sake of s_include) |
| 2108 | and a .newblock. |
| 2109 | The included file will be inserted before the newblock, so that the |
| 2110 | newblock is executed after the included file is processed. */ |
| 2111 | input = xmalloc (sizeof (newblock) + strlen (filename) + 4); |
| 2112 | sprintf (input, "\"%s\"\n%s", filename, newblock); |
| 2113 | input_scrub_insert_line (input); |
| 2114 | |
| 2115 | tic54x_clear_local_labels (0); |
| 2116 | |
| 2117 | tic54x_set_default_include (0); |
| 2118 | |
| 2119 | s_include (0); |
| 2120 | } |
| 2121 | |
| 2122 | static void |
| 2123 | tic54x_message (type) |
| 2124 | int type; |
| 2125 | { |
| 2126 | char *msg; |
| 2127 | char c; |
| 2128 | int len; |
| 2129 | |
| 2130 | ILLEGAL_WITHIN_STRUCT (); |
| 2131 | |
| 2132 | if (*input_line_pointer == '"') |
| 2133 | msg = demand_copy_C_string (&len); |
| 2134 | else |
| 2135 | { |
| 2136 | msg = input_line_pointer; |
| 2137 | while (!is_end_of_line[(int) *input_line_pointer]) |
| 2138 | ++input_line_pointer; |
| 2139 | c = *input_line_pointer; |
| 2140 | *input_line_pointer = 0; |
| 2141 | msg = strcpy (xmalloc (strlen (msg) + 1), msg); |
| 2142 | *input_line_pointer = c; |
| 2143 | } |
| 2144 | |
| 2145 | switch (type) |
| 2146 | { |
| 2147 | case 'm': |
| 2148 | as_tsktsk ("%s", msg); |
| 2149 | break; |
| 2150 | case 'w': |
| 2151 | as_warn ("%s", msg); |
| 2152 | break; |
| 2153 | case 'e': |
| 2154 | as_bad ("%s", msg); |
| 2155 | break; |
| 2156 | } |
| 2157 | |
| 2158 | demand_empty_rest_of_line (); |
| 2159 | } |
| 2160 | |
| 2161 | /* .label <symbol> |
| 2162 | Define a special symbol that refers to the loadtime address rather than the |
| 2163 | runtime address within the current section. |
| 2164 | |
| 2165 | This symbol gets a special storage class so that when it is resolved, it is |
| 2166 | resolved relative to the load address (lma) of the section rather than the |
| 2167 | run address (vma). */ |
| 2168 | |
| 2169 | static void |
| 2170 | tic54x_label (ignored) |
| 2171 | int ignored ATTRIBUTE_UNUSED; |
| 2172 | { |
| 2173 | char *name = input_line_pointer; |
| 2174 | symbolS *symbolP; |
| 2175 | int c; |
| 2176 | |
| 2177 | ILLEGAL_WITHIN_STRUCT (); |
| 2178 | |
| 2179 | c = get_symbol_end (); |
| 2180 | symbolP = colon (name); |
| 2181 | S_SET_STORAGE_CLASS (symbolP, C_STATLAB); |
| 2182 | |
| 2183 | *input_line_pointer = c; |
| 2184 | demand_empty_rest_of_line (); |
| 2185 | } |
| 2186 | |
| 2187 | /* .mmregs |
| 2188 | Install all memory-mapped register names into the symbol table as |
| 2189 | absolute local symbols. */ |
| 2190 | |
| 2191 | static void |
| 2192 | tic54x_mmregs (ignored) |
| 2193 | int ignored ATTRIBUTE_UNUSED; |
| 2194 | { |
| 2195 | symbol *sym; |
| 2196 | |
| 2197 | ILLEGAL_WITHIN_STRUCT (); |
| 2198 | |
| 2199 | for (sym = (symbol *) mmregs; sym->name; sym++) |
| 2200 | { |
| 2201 | symbolS *symbolP = symbol_new (sym->name, absolute_section, |
| 2202 | (valueT) sym->value, &zero_address_frag); |
| 2203 | SF_SET_LOCAL (symbolP); |
| 2204 | symbol_table_insert (symbolP); |
| 2205 | } |
| 2206 | } |
| 2207 | |
| 2208 | /* .loop [count] |
| 2209 | Count defaults to 1024. */ |
| 2210 | |
| 2211 | static void |
| 2212 | tic54x_loop (count) |
| 2213 | int count; |
| 2214 | { |
| 2215 | ILLEGAL_WITHIN_STRUCT (); |
| 2216 | |
| 2217 | SKIP_WHITESPACE (); |
| 2218 | if (!is_end_of_line[(int) *input_line_pointer]) |
| 2219 | count = get_absolute_expression (); |
| 2220 | |
| 2221 | do_repeat (count, "LOOP", "ENDLOOP"); |
| 2222 | } |
| 2223 | |
| 2224 | /* Normally, endloop gets eaten by the preceding loop. */ |
| 2225 | |
| 2226 | static void |
| 2227 | tic54x_endloop (ignore) |
| 2228 | int ignore ATTRIBUTE_UNUSED; |
| 2229 | { |
| 2230 | as_bad (_("ENDLOOP without corresponding LOOP")); |
| 2231 | ignore_rest_of_line (); |
| 2232 | } |
| 2233 | |
| 2234 | /* .break [condition]. */ |
| 2235 | |
| 2236 | static void |
| 2237 | tic54x_break (ignore) |
| 2238 | int ignore ATTRIBUTE_UNUSED; |
| 2239 | { |
| 2240 | int cond = 1; |
| 2241 | |
| 2242 | ILLEGAL_WITHIN_STRUCT (); |
| 2243 | |
| 2244 | SKIP_WHITESPACE (); |
| 2245 | if (!is_end_of_line[(int) *input_line_pointer]) |
| 2246 | cond = get_absolute_expression (); |
| 2247 | |
| 2248 | if (cond) |
| 2249 | end_repeat (substitution_line ? 1 : 0); |
| 2250 | } |
| 2251 | |
| 2252 | static void |
| 2253 | set_address_mode (mode) |
| 2254 | int mode; |
| 2255 | { |
| 2256 | amode = mode; |
| 2257 | if (mode == far_mode) |
| 2258 | { |
| 2259 | symbolS *symbolP = symbol_new ("__allow_far", absolute_section, |
| 2260 | (valueT) 1, &zero_address_frag); |
| 2261 | SF_SET_LOCAL (symbolP); |
| 2262 | symbol_table_insert (symbolP); |
| 2263 | } |
| 2264 | } |
| 2265 | |
| 2266 | static int address_mode_needs_set = 1; |
| 2267 | |
| 2268 | static void |
| 2269 | tic54x_address_mode (mode) |
| 2270 | int mode; |
| 2271 | { |
| 2272 | if (assembly_begun && amode != (unsigned) mode) |
| 2273 | { |
| 2274 | as_bad (_("Mixing of normal and extended addressing not supported")); |
| 2275 | ignore_rest_of_line (); |
| 2276 | return; |
| 2277 | } |
| 2278 | if (mode == far_mode && cpu != VNONE && cpu != V548 && cpu != V549) |
| 2279 | { |
| 2280 | as_bad (_("Extended addressing not supported on the specified CPU")); |
| 2281 | ignore_rest_of_line (); |
| 2282 | return; |
| 2283 | } |
| 2284 | |
| 2285 | set_address_mode (mode); |
| 2286 | demand_empty_rest_of_line (); |
| 2287 | } |
| 2288 | |
| 2289 | /* .sblock "section"|section [,...,"section"|section] |
| 2290 | Designate initialized sections for blocking. */ |
| 2291 | |
| 2292 | static void |
| 2293 | tic54x_sblock (ignore) |
| 2294 | int ignore ATTRIBUTE_UNUSED; |
| 2295 | { |
| 2296 | int c = ','; |
| 2297 | |
| 2298 | ILLEGAL_WITHIN_STRUCT (); |
| 2299 | |
| 2300 | while (c == ',') |
| 2301 | { |
| 2302 | segT seg; |
| 2303 | char *name; |
| 2304 | |
| 2305 | if (*input_line_pointer == '"') |
| 2306 | { |
| 2307 | int len; |
| 2308 | |
| 2309 | name = demand_copy_C_string (&len); |
| 2310 | } |
| 2311 | else |
| 2312 | { |
| 2313 | char *section_name = input_line_pointer; |
| 2314 | |
| 2315 | c = get_symbol_end (); |
| 2316 | name = xmalloc (strlen (section_name) + 1); |
| 2317 | strcpy (name, section_name); |
| 2318 | *input_line_pointer = c; |
| 2319 | } |
| 2320 | |
| 2321 | seg = bfd_get_section_by_name (stdoutput, name); |
| 2322 | if (seg == NULL) |
| 2323 | { |
| 2324 | as_bad (_("Unrecognized section '%s'"), name); |
| 2325 | ignore_rest_of_line (); |
| 2326 | return; |
| 2327 | } |
| 2328 | else if (!tic54x_initialized_section (seg)) |
| 2329 | { |
| 2330 | as_bad (_(".sblock may be used for initialized sections only")); |
| 2331 | ignore_rest_of_line (); |
| 2332 | return; |
| 2333 | } |
| 2334 | seg->flags |= SEC_BLOCK; |
| 2335 | |
| 2336 | c = *input_line_pointer; |
| 2337 | if (!is_end_of_line[(int) c]) |
| 2338 | ++input_line_pointer; |
| 2339 | } |
| 2340 | |
| 2341 | demand_empty_rest_of_line (); |
| 2342 | } |
| 2343 | |
| 2344 | /* symbol .set value |
| 2345 | symbol .equ value |
| 2346 | |
| 2347 | value must be defined externals; no forward-referencing allowed |
| 2348 | symbols assigned with .set/.equ may not be redefined. */ |
| 2349 | |
| 2350 | static void |
| 2351 | tic54x_set (ignore) |
| 2352 | int ignore ATTRIBUTE_UNUSED; |
| 2353 | { |
| 2354 | symbolS *symbolP; |
| 2355 | char *name; |
| 2356 | |
| 2357 | ILLEGAL_WITHIN_STRUCT (); |
| 2358 | |
| 2359 | if (!line_label) |
| 2360 | { |
| 2361 | as_bad (_("Symbol missing for .set/.equ")); |
| 2362 | ignore_rest_of_line (); |
| 2363 | return; |
| 2364 | } |
| 2365 | name = xstrdup (S_GET_NAME (line_label)); |
| 2366 | line_label = NULL; |
| 2367 | if ((symbolP = symbol_find (name)) == NULL |
| 2368 | && (symbolP = md_undefined_symbol (name)) == NULL) |
| 2369 | { |
| 2370 | symbolP = symbol_new (name, absolute_section, 0, &zero_address_frag); |
| 2371 | S_SET_STORAGE_CLASS (symbolP, C_STAT); |
| 2372 | } |
| 2373 | free (name); |
| 2374 | S_SET_DATA_TYPE (symbolP, T_INT); |
| 2375 | S_SET_SEGMENT (symbolP, absolute_section); |
| 2376 | symbol_table_insert (symbolP); |
| 2377 | pseudo_set (symbolP); |
| 2378 | demand_empty_rest_of_line (); |
| 2379 | } |
| 2380 | |
| 2381 | /* .fclist |
| 2382 | .fcnolist |
| 2383 | List false conditional blocks. */ |
| 2384 | |
| 2385 | static void |
| 2386 | tic54x_fclist (show) |
| 2387 | int show; |
| 2388 | { |
| 2389 | if (show) |
| 2390 | listing &= ~LISTING_NOCOND; |
| 2391 | else |
| 2392 | listing |= LISTING_NOCOND; |
| 2393 | demand_empty_rest_of_line (); |
| 2394 | } |
| 2395 | |
| 2396 | static void |
| 2397 | tic54x_sslist (show) |
| 2398 | int show; |
| 2399 | { |
| 2400 | ILLEGAL_WITHIN_STRUCT (); |
| 2401 | |
| 2402 | listing_sslist = show; |
| 2403 | } |
| 2404 | |
| 2405 | /* .var SYM[,...,SYMN] |
| 2406 | Define a substitution string to be local to a macro. */ |
| 2407 | |
| 2408 | static void |
| 2409 | tic54x_var (ignore) |
| 2410 | int ignore ATTRIBUTE_UNUSED; |
| 2411 | { |
| 2412 | static char empty[] = ""; |
| 2413 | char *name; |
| 2414 | int c; |
| 2415 | |
| 2416 | ILLEGAL_WITHIN_STRUCT (); |
| 2417 | |
| 2418 | if (macro_level == 0) |
| 2419 | { |
| 2420 | as_bad (_(".var may only be used within a macro definition")); |
| 2421 | ignore_rest_of_line (); |
| 2422 | return; |
| 2423 | } |
| 2424 | do |
| 2425 | { |
| 2426 | if (!ISALPHA (*input_line_pointer)) |
| 2427 | { |
| 2428 | as_bad (_("Substitution symbols must begin with a letter")); |
| 2429 | ignore_rest_of_line (); |
| 2430 | return; |
| 2431 | } |
| 2432 | name = input_line_pointer; |
| 2433 | c = get_symbol_end (); |
| 2434 | /* .var symbols start out with a null string. */ |
| 2435 | name = strcpy (xmalloc (strlen (name) + 1), name); |
| 2436 | hash_insert (subsym_hash[macro_level], name, empty); |
| 2437 | *input_line_pointer = c; |
| 2438 | if (c == ',') |
| 2439 | { |
| 2440 | ++input_line_pointer; |
| 2441 | if (is_end_of_line[(int) *input_line_pointer]) |
| 2442 | c = *input_line_pointer; |
| 2443 | } |
| 2444 | } |
| 2445 | while (c == ','); |
| 2446 | |
| 2447 | demand_empty_rest_of_line (); |
| 2448 | } |
| 2449 | |
| 2450 | /* .mlib <macro library filename> |
| 2451 | |
| 2452 | Macro libraries are archived (standard AR-format) text macro definitions |
| 2453 | Expand the file and include it. |
| 2454 | |
| 2455 | FIXME need to try the source file directory as well. */ |
| 2456 | |
| 2457 | static void |
| 2458 | tic54x_mlib (ignore) |
| 2459 | int ignore ATTRIBUTE_UNUSED; |
| 2460 | { |
| 2461 | char *filename; |
| 2462 | char *path; |
| 2463 | int len, i; |
| 2464 | bfd *abfd, *mbfd; |
| 2465 | |
| 2466 | ILLEGAL_WITHIN_STRUCT (); |
| 2467 | |
| 2468 | /* Parse the filename. */ |
| 2469 | if (*input_line_pointer == '"') |
| 2470 | { |
| 2471 | if ((filename = demand_copy_C_string (&len)) == NULL) |
| 2472 | return; |
| 2473 | } |
| 2474 | else |
| 2475 | { |
| 2476 | SKIP_WHITESPACE (); |
| 2477 | len = 0; |
| 2478 | while (!is_end_of_line[(int) *input_line_pointer] |
| 2479 | && !ISSPACE (*input_line_pointer)) |
| 2480 | { |
| 2481 | obstack_1grow (¬es, *input_line_pointer); |
| 2482 | ++input_line_pointer; |
| 2483 | ++len; |
| 2484 | } |
| 2485 | obstack_1grow (¬es, '\0'); |
| 2486 | filename = obstack_finish (¬es); |
| 2487 | } |
| 2488 | demand_empty_rest_of_line (); |
| 2489 | |
| 2490 | tic54x_set_default_include (0); |
| 2491 | path = xmalloc ((unsigned long) len + include_dir_maxlen + 5); |
| 2492 | |
| 2493 | for (i = 0; i < include_dir_count; i++) |
| 2494 | { |
| 2495 | FILE *try; |
| 2496 | |
| 2497 | strcpy (path, include_dirs[i]); |
| 2498 | strcat (path, "/"); |
| 2499 | strcat (path, filename); |
| 2500 | if ((try = fopen (path, "r")) != NULL) |
| 2501 | { |
| 2502 | fclose (try); |
| 2503 | break; |
| 2504 | } |
| 2505 | } |
| 2506 | |
| 2507 | if (i >= include_dir_count) |
| 2508 | { |
| 2509 | free (path); |
| 2510 | path = filename; |
| 2511 | } |
| 2512 | |
| 2513 | /* FIXME: if path is found, malloc'd storage is not freed. Of course, this |
| 2514 | happens all over the place, and since the assembler doesn't usually keep |
| 2515 | running for a very long time, it really doesn't matter. */ |
| 2516 | register_dependency (path); |
| 2517 | |
| 2518 | /* Expand all archive entries to temporary files and include them. */ |
| 2519 | abfd = bfd_openr (path, NULL); |
| 2520 | if (!abfd) |
| 2521 | { |
| 2522 | as_bad (_("Can't open macro library file '%s' for reading."), path); |
| 2523 | as_perror ("%s", path); |
| 2524 | ignore_rest_of_line (); |
| 2525 | return; |
| 2526 | } |
| 2527 | if (!bfd_check_format (abfd, bfd_archive)) |
| 2528 | { |
| 2529 | as_bad (_("File '%s' not in macro archive format"), path); |
| 2530 | ignore_rest_of_line (); |
| 2531 | return; |
| 2532 | } |
| 2533 | |
| 2534 | /* Open each BFD as binary (it should be straight ASCII text). */ |
| 2535 | for (mbfd = bfd_openr_next_archived_file (abfd, NULL); |
| 2536 | mbfd != NULL; mbfd = bfd_openr_next_archived_file (abfd, mbfd)) |
| 2537 | { |
| 2538 | /* Get a size at least as big as the archive member. */ |
| 2539 | bfd_size_type size = bfd_get_size (mbfd); |
| 2540 | char *buf = xmalloc (size); |
| 2541 | char *fname = tmpnam (NULL); |
| 2542 | FILE *ftmp; |
| 2543 | |
| 2544 | /* We're not sure how big it is, but it will be smaller than "size". */ |
| 2545 | bfd_bread (buf, size, mbfd); |
| 2546 | |
| 2547 | /* Write to a temporary file, then use s_include to include it |
| 2548 | a bit of a hack. */ |
| 2549 | ftmp = fopen (fname, "w+b"); |
| 2550 | fwrite ((void *) buf, size, 1, ftmp); |
| 2551 | if (buf[size - 1] != '\n') |
| 2552 | fwrite ("\n", 1, 1, ftmp); |
| 2553 | fclose (ftmp); |
| 2554 | free (buf); |
| 2555 | input_scrub_insert_file (fname); |
| 2556 | unlink (fname); |
| 2557 | } |
| 2558 | } |
| 2559 | |
| 2560 | const pseudo_typeS md_pseudo_table[] = |
| 2561 | { |
| 2562 | { "algebraic", s_ignore , 0 }, |
| 2563 | { "align" , tic54x_align_words , 128 }, |
| 2564 | { "ascii" , tic54x_stringer , 'p' }, |
| 2565 | { "asciz" , tic54x_stringer , 'P' }, |
| 2566 | { "even" , tic54x_align_words , 2 }, |
| 2567 | { "asg" , tic54x_asg , 0 }, |
| 2568 | { "eval" , tic54x_eval , 0 }, |
| 2569 | { "bss" , tic54x_bss , 0 }, |
| 2570 | { "byte" , tic54x_cons , 'b' }, |
| 2571 | { "ubyte" , tic54x_cons , 'B' }, |
| 2572 | { "char" , tic54x_cons , 'c' }, |
| 2573 | { "uchar" , tic54x_cons , 'C' }, |
| 2574 | { "clink" , tic54x_clink , 0 }, |
| 2575 | { "c_mode" , tic54x_address_mode , c_mode }, |
| 2576 | { "copy" , tic54x_include , 'c' }, |
| 2577 | { "include" , tic54x_include , 'i' }, |
| 2578 | { "data" , tic54x_sect , 'd' }, |
| 2579 | { "double" , tic54x_float_cons , 'd' }, |
| 2580 | { "ldouble" , tic54x_float_cons , 'l' }, |
| 2581 | { "drlist" , s_ignore , 0 }, |
| 2582 | { "drnolist" , s_ignore , 0 }, |
| 2583 | { "emsg" , tic54x_message , 'e' }, |
| 2584 | { "mmsg" , tic54x_message , 'm' }, |
| 2585 | { "wmsg" , tic54x_message , 'w' }, |
| 2586 | #if 0 |
| 2587 | { "end" , s_end , 0 }, |
| 2588 | #endif |
| 2589 | { "far_mode" , tic54x_address_mode , far_mode }, |
| 2590 | { "fclist" , tic54x_fclist , 1 }, |
| 2591 | { "fcnolist" , tic54x_fclist , 0 }, |
| 2592 | { "field" , tic54x_field , -1 }, |
| 2593 | { "float" , tic54x_float_cons , 'f' }, |
| 2594 | { "xfloat" , tic54x_float_cons , 'x' }, |
| 2595 | { "global" , tic54x_global , 'g' }, |
| 2596 | { "def" , tic54x_global , 'd' }, |
| 2597 | { "ref" , tic54x_global , 'r' }, |
| 2598 | { "half" , tic54x_cons , 'h' }, |
| 2599 | { "uhalf" , tic54x_cons , 'H' }, |
| 2600 | { "short" , tic54x_cons , 's' }, |
| 2601 | { "ushort" , tic54x_cons , 'S' }, |
| 2602 | { "if" , s_if , (int) O_ne }, |
| 2603 | { "elseif" , s_elseif , (int) O_ne }, |
| 2604 | { "else" , s_else , 0 }, |
| 2605 | { "endif" , s_endif , 0 }, |
| 2606 | { "int" , tic54x_cons , 'i' }, |
| 2607 | { "uint" , tic54x_cons , 'I' }, |
| 2608 | { "word" , tic54x_cons , 'w' }, |
| 2609 | { "uword" , tic54x_cons , 'W' }, |
| 2610 | { "label" , tic54x_label , 0 }, /* Loadtime |
| 2611 | address. */ |
| 2612 | { "length" , s_ignore , 0 }, |
| 2613 | { "width" , s_ignore , 0 }, |
| 2614 | #if 0 |
| 2615 | { "list" , listing_list , 1 }, |
| 2616 | { "nolist" , listing_list , 0 }, |
| 2617 | #endif |
| 2618 | { "long" , tic54x_cons , 'l' }, |
| 2619 | { "ulong" , tic54x_cons , 'L' }, |
| 2620 | { "xlong" , tic54x_cons , 'x' }, |
| 2621 | { "loop" , tic54x_loop , 1024 }, |
| 2622 | { "break" , tic54x_break , 0 }, |
| 2623 | { "endloop" , tic54x_endloop , 0 }, |
| 2624 | { "mlib" , tic54x_mlib , 0 }, |
| 2625 | { "mlist" , s_ignore , 0 }, |
| 2626 | { "mnolist" , s_ignore , 0 }, |
| 2627 | { "mmregs" , tic54x_mmregs , 0 }, |
| 2628 | { "newblock" , tic54x_clear_local_labels, 0 }, |
| 2629 | { "option" , s_ignore , 0 }, |
| 2630 | { "p2align" , tic54x_p2align , 0 }, |
| 2631 | #if 0 |
| 2632 | { "page" , listing_eject , 0 }, |
| 2633 | #endif |
| 2634 | { "sblock" , tic54x_sblock , 0 }, |
| 2635 | { "sect" , tic54x_sect , '*' }, |
| 2636 | { "set" , tic54x_set , 0 }, |
| 2637 | { "equ" , tic54x_set , 0 }, |
| 2638 | { "space" , tic54x_space , 0 }, |
| 2639 | { "bes" , tic54x_space , 1 }, |
| 2640 | { "sslist" , tic54x_sslist , 1 }, |
| 2641 | { "ssnolist" , tic54x_sslist , 0 }, |
| 2642 | { "string" , tic54x_stringer , 's' }, |
| 2643 | { "pstring" , tic54x_stringer , 'p' }, |
| 2644 | { "struct" , tic54x_struct , 0 }, |
| 2645 | { "tag" , tic54x_tag , 0 }, |
| 2646 | { "endstruct", tic54x_endstruct , 0 }, |
| 2647 | { "tab" , s_ignore , 0 }, |
| 2648 | { "text" , tic54x_sect , 't' }, |
| 2649 | #if 0 |
| 2650 | { "title" , listing_title , 0 }, |
| 2651 | #endif |
| 2652 | { "union" , tic54x_struct , 1 }, |
| 2653 | { "endunion" , tic54x_endstruct , 1 }, |
| 2654 | { "usect" , tic54x_usect , 0 }, |
| 2655 | { "var" , tic54x_var , 0 }, |
| 2656 | { "version" , tic54x_version , 0 }, |
| 2657 | {0 , 0 , 0 } |
| 2658 | }; |
| 2659 | |
| 2660 | #if 0 |
| 2661 | /* For debugging, strings for each operand type. */ |
| 2662 | static const char *optypes[] = |
| 2663 | { |
| 2664 | "none", "Xmem", "Ymem", "pmad", "dmad", "Smem", "Lmem", "MMR", "PA", |
| 2665 | "Sind", "xpmad", "xpmad+", "MMRX", "MMRY", |
| 2666 | "SRC1", "SRC", "RND", "DST", |
| 2667 | "ARX", |
| 2668 | "SHIFT", "SHFT", |
| 2669 | "B", "A", "lk", "TS", "k8", "16", "BITC", "CC", "CC2", "CC3", "123", "031", |
| 2670 | "k5", "k8u", "ASM", "T", "DP", "ARP", "k3", "lku", "N", "SBIT", "12", |
| 2671 | "k9", "TRN", |
| 2672 | }; |
| 2673 | #endif |
| 2674 | |
| 2675 | int |
| 2676 | md_parse_option (c, arg) |
| 2677 | int c; |
| 2678 | char *arg; |
| 2679 | { |
| 2680 | switch (c) |
| 2681 | { |
| 2682 | default: |
| 2683 | return 0; |
| 2684 | case OPTION_COFF_VERSION: |
| 2685 | { |
| 2686 | int version = atoi (arg); |
| 2687 | |
| 2688 | if (version != 0 && version != 1 && version != 2) |
| 2689 | as_fatal (_("Bad COFF version '%s'"), arg); |
| 2690 | /* FIXME -- not yet implemented. */ |
| 2691 | break; |
| 2692 | } |
| 2693 | case OPTION_CPU_VERSION: |
| 2694 | { |
| 2695 | cpu = lookup_version (arg); |
| 2696 | cpu_needs_set = 1; |
| 2697 | if (cpu == VNONE) |
| 2698 | as_fatal (_("Bad CPU version '%s'"), arg); |
| 2699 | break; |
| 2700 | } |
| 2701 | case OPTION_ADDRESS_MODE: |
| 2702 | amode = far_mode; |
| 2703 | address_mode_needs_set = 1; |
| 2704 | break; |
| 2705 | case OPTION_STDERR_TO_FILE: |
| 2706 | { |
| 2707 | char *filename = arg; |
| 2708 | FILE *fp = fopen (filename, "w+"); |
| 2709 | |
| 2710 | if (fp == NULL) |
| 2711 | as_fatal (_("Can't redirect stderr to the file '%s'"), filename); |
| 2712 | fclose (fp); |
| 2713 | if ((fp = freopen (filename, "w+", stderr)) == NULL) |
| 2714 | as_fatal (_("Can't redirect stderr to the file '%s'"), filename); |
| 2715 | break; |
| 2716 | } |
| 2717 | } |
| 2718 | |
| 2719 | return 1; |
| 2720 | } |
| 2721 | |
| 2722 | /* Create a "local" substitution string hash table for a new macro level |
| 2723 | Some docs imply that macros have to use .newblock in order to be able |
| 2724 | to re-use a local label. We effectively do an automatic .newblock by |
| 2725 | deleting the local label hash between macro invocations. */ |
| 2726 | |
| 2727 | void |
| 2728 | tic54x_macro_start () |
| 2729 | { |
| 2730 | ++macro_level; |
| 2731 | subsym_hash[macro_level] = hash_new (); |
| 2732 | local_label_hash[macro_level] = hash_new (); |
| 2733 | } |
| 2734 | |
| 2735 | void |
| 2736 | tic54x_macro_info (info) |
| 2737 | void *info; |
| 2738 | { |
| 2739 | struct formal_struct |
| 2740 | { |
| 2741 | struct formal_struct *next; /* Next formal in list */ |
| 2742 | sb name; /* Name of the formal */ |
| 2743 | sb def; /* The default value */ |
| 2744 | sb actual; /* The actual argument (changed on |
| 2745 | each expansion) */ |
| 2746 | int index; /* The index of the formal |
| 2747 | 0 .. formal_count - 1 */ |
| 2748 | } *entry; |
| 2749 | struct macro_struct |
| 2750 | { |
| 2751 | sb sub; /* Substitution text. */ |
| 2752 | int formal_count; /* Number of formal args. */ |
| 2753 | struct formal_struct *formals; /* Pointer to list of |
| 2754 | formal_structs. */ |
| 2755 | struct hash_control *formal_hash; /* Hash table of formals. */ |
| 2756 | } *macro; |
| 2757 | |
| 2758 | macro = (struct macro_struct *) info; |
| 2759 | |
| 2760 | /* Put the formal args into the substitution symbol table. */ |
| 2761 | for (entry = macro->formals; entry; entry = entry->next) |
| 2762 | { |
| 2763 | char *name = strncpy (xmalloc (entry->name.len + 1), |
| 2764 | entry->name.ptr, entry->name.len); |
| 2765 | char *value = strncpy (xmalloc (entry->actual.len + 1), |
| 2766 | entry->actual.ptr, entry->actual.len); |
| 2767 | |
| 2768 | name[entry->name.len] = '\0'; |
| 2769 | value[entry->actual.len] = '\0'; |
| 2770 | hash_insert (subsym_hash[macro_level], name, value); |
| 2771 | } |
| 2772 | } |
| 2773 | |
| 2774 | /* Get rid of this macro's .var's, arguments, and local labels. */ |
| 2775 | |
| 2776 | void |
| 2777 | tic54x_macro_end () |
| 2778 | { |
| 2779 | hash_die (subsym_hash[macro_level]); |
| 2780 | subsym_hash[macro_level] = NULL; |
| 2781 | hash_die (local_label_hash[macro_level]); |
| 2782 | local_label_hash[macro_level] = NULL; |
| 2783 | --macro_level; |
| 2784 | } |
| 2785 | |
| 2786 | static int |
| 2787 | subsym_symlen (a, ignore) |
| 2788 | char *a; |
| 2789 | char *ignore ATTRIBUTE_UNUSED; |
| 2790 | { |
| 2791 | return strlen (a); |
| 2792 | } |
| 2793 | |
| 2794 | /* Compare symbol A to string B. */ |
| 2795 | |
| 2796 | static int |
| 2797 | subsym_symcmp (a, b) |
| 2798 | char *a; |
| 2799 | char *b; |
| 2800 | { |
| 2801 | return strcmp (a, b); |
| 2802 | } |
| 2803 | |
| 2804 | /* Return the index of the first occurence of B in A, or zero if none |
| 2805 | assumes b is an integer char value as a string. Index is one-based. */ |
| 2806 | |
| 2807 | static int |
| 2808 | subsym_firstch (a, b) |
| 2809 | char *a; |
| 2810 | char *b; |
| 2811 | { |
| 2812 | int val = atoi (b); |
| 2813 | char *tmp = strchr (a, val); |
| 2814 | |
| 2815 | return tmp ? tmp - a + 1 : 0; |
| 2816 | } |
| 2817 | |
| 2818 | /* Similar to firstch, but returns index of last occurrence of B in A. */ |
| 2819 | |
| 2820 | static int |
| 2821 | subsym_lastch (a, b) |
| 2822 | char *a; |
| 2823 | char *b; |
| 2824 | { |
| 2825 | int val = atoi (b); |
| 2826 | char *tmp = strrchr (a, val); |
| 2827 | |
| 2828 | return tmp ? tmp - a + 1 : 0; |
| 2829 | } |
| 2830 | |
| 2831 | /* Returns 1 if string A is defined in the symbol table (NOT the substitution |
| 2832 | symbol table). */ |
| 2833 | |
| 2834 | static int |
| 2835 | subsym_isdefed (a, ignore) |
| 2836 | char *a; |
| 2837 | char *ignore ATTRIBUTE_UNUSED; |
| 2838 | { |
| 2839 | symbolS *symbolP = symbol_find (a); |
| 2840 | |
| 2841 | return symbolP != NULL; |
| 2842 | } |
| 2843 | |
| 2844 | /* Assign first member of comma-separated list B (e.g. "1,2,3") to the symbol |
| 2845 | A, or zero if B is a null string. Both arguments *must* be substitution |
| 2846 | symbols, unsubstituted. */ |
| 2847 | |
| 2848 | static int |
| 2849 | subsym_ismember (sym, list) |
| 2850 | char *sym; |
| 2851 | char *list; |
| 2852 | { |
| 2853 | char *elem, *ptr, *listv; |
| 2854 | |
| 2855 | if (!list) |
| 2856 | return 0; |
| 2857 | |
| 2858 | listv = subsym_lookup (list, macro_level); |
| 2859 | if (!listv) |
| 2860 | { |
| 2861 | as_bad (_("Undefined substitution symbol '%s'"), list); |
| 2862 | ignore_rest_of_line (); |
| 2863 | return 0; |
| 2864 | } |
| 2865 | |
| 2866 | ptr = elem = xmalloc (strlen (listv) + 1); |
| 2867 | strcpy (elem, listv); |
| 2868 | while (*ptr && *ptr != ',') |
| 2869 | ++ptr; |
| 2870 | *ptr++ = 0; |
| 2871 | |
| 2872 | subsym_create_or_replace (sym, elem); |
| 2873 | |
| 2874 | /* Reassign the list. */ |
| 2875 | subsym_create_or_replace (list, ptr); |
| 2876 | |
| 2877 | /* Assume this value, docs aren't clear. */ |
| 2878 | return *list != 0; |
| 2879 | } |
| 2880 | |
| 2881 | /* Return zero if not a constant; otherwise: |
| 2882 | 1 if binary |
| 2883 | 2 if octal |
| 2884 | 3 if hexadecimal |
| 2885 | 4 if character |
| 2886 | 5 if decimal. */ |
| 2887 | |
| 2888 | static int |
| 2889 | subsym_iscons (a, ignore) |
| 2890 | char *a; |
| 2891 | char *ignore ATTRIBUTE_UNUSED; |
| 2892 | { |
| 2893 | expressionS exp; |
| 2894 | |
| 2895 | parse_expression (a, &exp); |
| 2896 | |
| 2897 | if (exp.X_op == O_constant) |
| 2898 | { |
| 2899 | int len = strlen (a); |
| 2900 | |
| 2901 | switch (TOUPPER (a[len - 1])) |
| 2902 | { |
| 2903 | case 'B': |
| 2904 | return 1; |
| 2905 | case 'Q': |
| 2906 | return 2; |
| 2907 | case 'H': |
| 2908 | return 3; |
| 2909 | case '\'': |
| 2910 | return 4; |
| 2911 | default: |
| 2912 | break; |
| 2913 | } |
| 2914 | /* No suffix; either octal, hex, or decimal. */ |
| 2915 | if (*a == '0' && len > 1) |
| 2916 | { |
| 2917 | if (TOUPPER (a[1]) == 'X') |
| 2918 | return 3; |
| 2919 | return 2; |
| 2920 | } |
| 2921 | return 5; |
| 2922 | } |
| 2923 | |
| 2924 | return 0; |
| 2925 | } |
| 2926 | |
| 2927 | /* Return 1 if A is a valid symbol name. Expects string input. */ |
| 2928 | |
| 2929 | static int |
| 2930 | subsym_isname (a, ignore) |
| 2931 | char *a; |
| 2932 | char *ignore ATTRIBUTE_UNUSED; |
| 2933 | { |
| 2934 | if (!is_name_beginner (*a)) |
| 2935 | return 0; |
| 2936 | while (*a) |
| 2937 | { |
| 2938 | if (!is_part_of_name (*a)) |
| 2939 | return 0; |
| 2940 | ++a; |
| 2941 | } |
| 2942 | return 1; |
| 2943 | } |
| 2944 | |
| 2945 | /* Return whether the string is a register; accepts ar0-7, unless .mmregs has |
| 2946 | been seen; if so, recognize any memory-mapped register. |
| 2947 | Note this does not recognize "A" or "B" accumulators. */ |
| 2948 | |
| 2949 | static int |
| 2950 | subsym_isreg (a, ignore) |
| 2951 | char *a; |
| 2952 | char *ignore ATTRIBUTE_UNUSED; |
| 2953 | { |
| 2954 | if (hash_find (reg_hash, a)) |
| 2955 | return 1; |
| 2956 | if (hash_find (mmreg_hash, a)) |
| 2957 | return 1; |
| 2958 | return 0; |
| 2959 | } |
| 2960 | |
| 2961 | /* Return the structrure size, given the stag. */ |
| 2962 | |
| 2963 | static int |
| 2964 | subsym_structsz (name, ignore) |
| 2965 | char *name; |
| 2966 | char *ignore ATTRIBUTE_UNUSED; |
| 2967 | { |
| 2968 | struct stag *stag = (struct stag *) hash_find (stag_hash, name); |
| 2969 | |
| 2970 | if (stag) |
| 2971 | return stag->size; |
| 2972 | |
| 2973 | return 0; |
| 2974 | } |
| 2975 | |
| 2976 | /* If anybody actually uses this, they can fix it :) |
| 2977 | FIXME I'm not sure what the "reference point" of a structure is. It might |
| 2978 | be either the initial offset given .struct, or it may be the offset of the |
| 2979 | structure within another structure, or it might be something else |
| 2980 | altogether. since the TI assembler doesn't seem to ever do anything but |
| 2981 | return zero, we punt and return zero. */ |
| 2982 | |
| 2983 | static int |
| 2984 | subsym_structacc (stag_name, ignore) |
| 2985 | char *stag_name ATTRIBUTE_UNUSED; |
| 2986 | char *ignore ATTRIBUTE_UNUSED; |
| 2987 | { |
| 2988 | return 0; |
| 2989 | } |
| 2990 | |
| 2991 | static float |
| 2992 | math_ceil (arg1, ignore) |
| 2993 | float arg1; |
| 2994 | float ignore ATTRIBUTE_UNUSED; |
| 2995 | { |
| 2996 | return (float) ceil (arg1); |
| 2997 | } |
| 2998 | |
| 2999 | static float |
| 3000 | math_cvi (arg1, ignore) |
| 3001 | float arg1; |
| 3002 | float ignore ATTRIBUTE_UNUSED; |
| 3003 | { |
| 3004 | return (int) arg1; |
| 3005 | } |
| 3006 | |
| 3007 | static float |
| 3008 | math_floor (arg1, ignore) |
| 3009 | float arg1; |
| 3010 | float ignore ATTRIBUTE_UNUSED; |
| 3011 | { |
| 3012 | return (float) floor (arg1); |
| 3013 | } |
| 3014 | |
| 3015 | static float |
| 3016 | math_fmod (arg1, arg2) |
| 3017 | float arg1; |
| 3018 | float arg2; |
| 3019 | { |
| 3020 | return (int) arg1 % (int) arg2; |
| 3021 | } |
| 3022 | |
| 3023 | static float |
| 3024 | math_int (arg1, ignore) |
| 3025 | float arg1; |
| 3026 | float ignore ATTRIBUTE_UNUSED; |
| 3027 | { |
| 3028 | return ((float) ((int) arg1)) == arg1; |
| 3029 | } |
| 3030 | |
| 3031 | static float |
| 3032 | math_round (arg1, ignore) |
| 3033 | float arg1; |
| 3034 | float ignore ATTRIBUTE_UNUSED; |
| 3035 | { |
| 3036 | return arg1 > 0 ? (int) (arg1 + 0.5) : (int) (arg1 - 0.5); |
| 3037 | } |
| 3038 | |
| 3039 | static float |
| 3040 | math_sgn (arg1, ignore) |
| 3041 | float arg1; |
| 3042 | float ignore ATTRIBUTE_UNUSED; |
| 3043 | { |
| 3044 | return (arg1 < 0) ? -1 : (arg1 ? 1 : 0); |
| 3045 | } |
| 3046 | |
| 3047 | static float |
| 3048 | math_trunc (arg1, ignore) |
| 3049 | float arg1; |
| 3050 | float ignore ATTRIBUTE_UNUSED; |
| 3051 | { |
| 3052 | return (int) arg1; |
| 3053 | } |
| 3054 | |
| 3055 | static float |
| 3056 | math_acos (arg1, ignore) |
| 3057 | float arg1; |
| 3058 | float ignore ATTRIBUTE_UNUSED; |
| 3059 | { |
| 3060 | return (float) acos (arg1); |
| 3061 | } |
| 3062 | |
| 3063 | static float |
| 3064 | math_asin (arg1, ignore) |
| 3065 | float arg1; |
| 3066 | float ignore ATTRIBUTE_UNUSED; |
| 3067 | { |
| 3068 | return (float) asin (arg1); |
| 3069 | } |
| 3070 | |
| 3071 | static float |
| 3072 | math_atan (arg1, ignore) |
| 3073 | float arg1; |
| 3074 | float ignore ATTRIBUTE_UNUSED; |
| 3075 | { |
| 3076 | return (float) atan (arg1); |
| 3077 | } |
| 3078 | |
| 3079 | static float |
| 3080 | math_atan2 (arg1, arg2) |
| 3081 | float arg1; |
| 3082 | float arg2; |
| 3083 | { |
| 3084 | return (float) atan2 (arg1, arg2); |
| 3085 | } |
| 3086 | |
| 3087 | static float |
| 3088 | math_cosh (arg1, ignore) |
| 3089 | float arg1; |
| 3090 | float ignore ATTRIBUTE_UNUSED; |
| 3091 | { |
| 3092 | return (float) cosh (arg1); |
| 3093 | } |
| 3094 | |
| 3095 | static float |
| 3096 | math_cos (arg1, ignore) |
| 3097 | float arg1; |
| 3098 | float ignore ATTRIBUTE_UNUSED; |
| 3099 | { |
| 3100 | return (float) cos (arg1); |
| 3101 | } |
| 3102 | |
| 3103 | static float |
| 3104 | math_cvf (arg1, ignore) |
| 3105 | float arg1; |
| 3106 | float ignore ATTRIBUTE_UNUSED; |
| 3107 | { |
| 3108 | return (float) arg1; |
| 3109 | } |
| 3110 | |
| 3111 | static float |
| 3112 | math_exp (arg1, ignore) |
| 3113 | float arg1; |
| 3114 | float ignore ATTRIBUTE_UNUSED; |
| 3115 | { |
| 3116 | return (float) exp (arg1); |
| 3117 | } |
| 3118 | |
| 3119 | static float |
| 3120 | math_fabs (arg1, ignore) |
| 3121 | float arg1; |
| 3122 | float ignore ATTRIBUTE_UNUSED; |
| 3123 | { |
| 3124 | return (float) fabs (arg1); |
| 3125 | } |
| 3126 | |
| 3127 | /* expr1 * 2^expr2. */ |
| 3128 | |
| 3129 | static float |
| 3130 | math_ldexp (arg1, arg2) |
| 3131 | float arg1; |
| 3132 | float arg2; |
| 3133 | { |
| 3134 | return arg1 * (float) pow (2.0, arg2); |
| 3135 | } |
| 3136 | |
| 3137 | static float |
| 3138 | math_log10 (arg1, ignore) |
| 3139 | float arg1; |
| 3140 | float ignore ATTRIBUTE_UNUSED; |
| 3141 | { |
| 3142 | return (float) log10 (arg1); |
| 3143 | } |
| 3144 | |
| 3145 | static float |
| 3146 | math_log (arg1, ignore) |
| 3147 | float arg1; |
| 3148 | float ignore ATTRIBUTE_UNUSED; |
| 3149 | { |
| 3150 | return (float) log (arg1); |
| 3151 | } |
| 3152 | |
| 3153 | static float |
| 3154 | math_max (arg1, arg2) |
| 3155 | float arg1; |
| 3156 | float arg2; |
| 3157 | { |
| 3158 | return (arg1 > arg2) ? arg1 : arg2; |
| 3159 | } |
| 3160 | |
| 3161 | static float |
| 3162 | math_min (arg1, arg2) |
| 3163 | float arg1; |
| 3164 | float arg2; |
| 3165 | { |
| 3166 | return (arg1 < arg2) ? arg1 : arg2; |
| 3167 | } |
| 3168 | |
| 3169 | static float |
| 3170 | math_pow (arg1, arg2) |
| 3171 | float arg1; |
| 3172 | float arg2; |
| 3173 | { |
| 3174 | return (float) pow (arg1, arg2); |
| 3175 | } |
| 3176 | |
| 3177 | static float |
| 3178 | math_sin (arg1, ignore) |
| 3179 | float arg1; |
| 3180 | float ignore ATTRIBUTE_UNUSED; |
| 3181 | { |
| 3182 | return (float) sin (arg1); |
| 3183 | } |
| 3184 | |
| 3185 | static float |
| 3186 | math_sinh (arg1, ignore) |
| 3187 | float arg1; |
| 3188 | float ignore ATTRIBUTE_UNUSED; |
| 3189 | { |
| 3190 | return (float) sinh (arg1); |
| 3191 | } |
| 3192 | |
| 3193 | static float |
| 3194 | math_sqrt (arg1, ignore) |
| 3195 | float arg1; |
| 3196 | float ignore ATTRIBUTE_UNUSED; |
| 3197 | { |
| 3198 | return (float) sqrt (arg1); |
| 3199 | } |
| 3200 | |
| 3201 | static float |
| 3202 | math_tan (arg1, ignore) |
| 3203 | float arg1; |
| 3204 | float ignore ATTRIBUTE_UNUSED; |
| 3205 | { |
| 3206 | return (float) tan (arg1); |
| 3207 | } |
| 3208 | |
| 3209 | static float |
| 3210 | math_tanh (arg1, ignore) |
| 3211 | float arg1; |
| 3212 | float ignore ATTRIBUTE_UNUSED; |
| 3213 | { |
| 3214 | return (float) tanh (arg1); |
| 3215 | } |
| 3216 | |
| 3217 | /* Built-in substitution symbol functions and math functions. */ |
| 3218 | typedef struct |
| 3219 | { |
| 3220 | char *name; |
| 3221 | int (*proc) PARAMS ((char *, char *)); |
| 3222 | int nargs; |
| 3223 | } subsym_proc_entry; |
| 3224 | |
| 3225 | static const subsym_proc_entry subsym_procs[] = |
| 3226 | { |
| 3227 | /* Assembler built-in string substitution functions. */ |
| 3228 | { "$symlen", subsym_symlen, 1, }, |
| 3229 | { "$symcmp", subsym_symcmp, 2, }, |
| 3230 | { "$firstch", subsym_firstch, 2, }, |
| 3231 | { "$lastch", subsym_lastch, 2, }, |
| 3232 | { "$isdefed", subsym_isdefed, 1, }, |
| 3233 | { "$ismember", subsym_ismember, 2, }, |
| 3234 | { "$iscons", subsym_iscons, 1, }, |
| 3235 | { "$isname", subsym_isname, 1, }, |
| 3236 | { "$isreg", subsym_isreg, 1, }, |
| 3237 | { "$structsz", subsym_structsz, 1, }, |
| 3238 | { "$structacc", subsym_structacc, 1, }, |
| 3239 | { NULL, NULL, 0 }, |
| 3240 | }; |
| 3241 | |
| 3242 | typedef struct |
| 3243 | { |
| 3244 | char *name; |
| 3245 | float (*proc) PARAMS ((float, float)); |
| 3246 | int nargs; |
| 3247 | int int_return; |
| 3248 | } math_proc_entry; |
| 3249 | |
| 3250 | static const math_proc_entry math_procs[] = |
| 3251 | { |
| 3252 | /* Integer-returning built-in math functions. */ |
| 3253 | { "$cvi", math_cvi, 1, 1 }, |
| 3254 | { "$int", math_int, 1, 1 }, |
| 3255 | { "$sgn", math_sgn, 1, 1 }, |
| 3256 | |
| 3257 | /* Float-returning built-in math functions. */ |
| 3258 | { "$acos", math_acos, 1, 0 }, |
| 3259 | { "$asin", math_asin, 1, 0 }, |
| 3260 | { "$atan", math_atan, 1, 0 }, |
| 3261 | { "$atan2", math_atan2, 2, 0 }, |
| 3262 | { "$ceil", math_ceil, 1, 0 }, |
| 3263 | { "$cosh", math_cosh, 1, 0 }, |
| 3264 | { "$cos", math_cos, 1, 0 }, |
| 3265 | { "$cvf", math_cvf, 1, 0 }, |
| 3266 | { "$exp", math_exp, 1, 0 }, |
| 3267 | { "$fabs", math_fabs, 1, 0 }, |
| 3268 | { "$floor", math_floor, 1, 0 }, |
| 3269 | { "$fmod", math_fmod, 2, 0 }, |
| 3270 | { "$ldexp", math_ldexp, 2, 0 }, |
| 3271 | { "$log10", math_log10, 1, 0 }, |
| 3272 | { "$log", math_log, 1, 0 }, |
| 3273 | { "$max", math_max, 2, 0 }, |
| 3274 | { "$min", math_min, 2, 0 }, |
| 3275 | { "$pow", math_pow, 2, 0 }, |
| 3276 | { "$round", math_round, 1, 0 }, |
| 3277 | { "$sin", math_sin, 1, 0 }, |
| 3278 | { "$sinh", math_sinh, 1, 0 }, |
| 3279 | { "$sqrt", math_sqrt, 1, 0 }, |
| 3280 | { "$tan", math_tan, 1, 0 }, |
| 3281 | { "$tanh", math_tanh, 1, 0 }, |
| 3282 | { "$trunc", math_trunc, 1, 0 }, |
| 3283 | { NULL, NULL, 0, 0 }, |
| 3284 | }; |
| 3285 | |
| 3286 | void |
| 3287 | md_begin () |
| 3288 | { |
| 3289 | template *tm; |
| 3290 | symbol *sym; |
| 3291 | const subsym_proc_entry *subsym_proc; |
| 3292 | const math_proc_entry *math_proc; |
| 3293 | const char *hash_err; |
| 3294 | char **symname; |
| 3295 | char *TIC54X_DIR = getenv ("TIC54X_DIR"); |
| 3296 | char *A_DIR = TIC54X_DIR ? TIC54X_DIR : getenv ("A_DIR"); |
| 3297 | |
| 3298 | local_label_id = 0; |
| 3299 | |
| 3300 | /* Look for A_DIR and add it to the include list. */ |
| 3301 | if (A_DIR != NULL) |
| 3302 | { |
| 3303 | char *tmp = xstrdup (A_DIR); |
| 3304 | |
| 3305 | do |
| 3306 | { |
| 3307 | char *next = strchr (tmp, ';'); |
| 3308 | |
| 3309 | if (next) |
| 3310 | *next++ = '\0'; |
| 3311 | add_include_dir (tmp); |
| 3312 | tmp = next; |
| 3313 | } |
| 3314 | while (tmp != NULL); |
| 3315 | } |
| 3316 | |
| 3317 | op_hash = hash_new (); |
| 3318 | for (tm = (template *) tic54x_optab; tm->name; tm++) |
| 3319 | { |
| 3320 | if (hash_find (op_hash, tm->name)) |
| 3321 | continue; |
| 3322 | hash_err = hash_insert (op_hash, tm->name, (char *) tm); |
| 3323 | if (hash_err) |
| 3324 | as_fatal ("Internal Error: Can't hash %s: %s", |
| 3325 | tm->name, hash_err); |
| 3326 | } |
| 3327 | parop_hash = hash_new (); |
| 3328 | for (tm = (template *) tic54x_paroptab; tm->name; tm++) |
| 3329 | { |
| 3330 | if (hash_find (parop_hash, tm->name)) |
| 3331 | continue; |
| 3332 | hash_err = hash_insert (parop_hash, tm->name, (char *) tm); |
| 3333 | if (hash_err) |
| 3334 | as_fatal ("Internal Error: Can't hash %s: %s", |
| 3335 | tm->name, hash_err); |
| 3336 | } |
| 3337 | reg_hash = hash_new (); |
| 3338 | for (sym = (symbol *) regs; sym->name; sym++) |
| 3339 | { |
| 3340 | /* Add basic registers to the symbol table. */ |
| 3341 | symbolS *symbolP = symbol_new (sym->name, absolute_section, |
| 3342 | (valueT) sym->value, &zero_address_frag); |
| 3343 | SF_SET_LOCAL (symbolP); |
| 3344 | symbol_table_insert (symbolP); |
| 3345 | hash_err = hash_insert (reg_hash, sym->name, (char *) sym); |
| 3346 | } |
| 3347 | for (sym = (symbol *) mmregs; sym->name; sym++) |
| 3348 | hash_err = hash_insert (reg_hash, sym->name, (char *) sym); |
| 3349 | mmreg_hash = hash_new (); |
| 3350 | for (sym = (symbol *) mmregs; sym->name; sym++) |
| 3351 | hash_err = hash_insert (mmreg_hash, sym->name, (char *) sym); |
| 3352 | |
| 3353 | cc_hash = hash_new (); |
| 3354 | for (sym = (symbol *) condition_codes; sym->name; sym++) |
| 3355 | hash_err = hash_insert (cc_hash, sym->name, (char *) sym); |
| 3356 | |
| 3357 | cc2_hash = hash_new (); |
| 3358 | for (sym = (symbol *) cc2_codes; sym->name; sym++) |
| 3359 | hash_err = hash_insert (cc2_hash, sym->name, (char *) sym); |
| 3360 | |
| 3361 | cc3_hash = hash_new (); |
| 3362 | for (sym = (symbol *) cc3_codes; sym->name; sym++) |
| 3363 | hash_err = hash_insert (cc3_hash, sym->name, (char *) sym); |
| 3364 | |
| 3365 | sbit_hash = hash_new (); |
| 3366 | for (sym = (symbol *) status_bits; sym->name; sym++) |
| 3367 | hash_err = hash_insert (sbit_hash, sym->name, (char *) sym); |
| 3368 | |
| 3369 | misc_symbol_hash = hash_new (); |
| 3370 | for (symname = (char **) misc_symbols; *symname; symname++) |
| 3371 | hash_err = hash_insert (misc_symbol_hash, *symname, *symname); |
| 3372 | |
| 3373 | /* Only the base substitution table and local label table are initialized; |
| 3374 | the others (for local macro substitution) get instantiated as needed. */ |
| 3375 | local_label_hash[0] = hash_new (); |
| 3376 | subsym_hash[0] = hash_new (); |
| 3377 | for (subsym_proc = subsym_procs; subsym_proc->name; subsym_proc++) |
| 3378 | hash_err = hash_insert (subsym_hash[0], subsym_proc->name, |
| 3379 | (char *) subsym_proc); |
| 3380 | |
| 3381 | math_hash = hash_new (); |
| 3382 | for (math_proc = math_procs; math_proc->name; math_proc++) |
| 3383 | { |
| 3384 | /* Insert into the main subsym hash for recognition; insert into |
| 3385 | the math hash to actually store information. */ |
| 3386 | hash_err = hash_insert (subsym_hash[0], math_proc->name, |
| 3387 | (char *) math_proc); |
| 3388 | hash_err = hash_insert (math_hash, math_proc->name, |
| 3389 | (char *) math_proc); |
| 3390 | } |
| 3391 | subsym_recurse_hash = hash_new (); |
| 3392 | stag_hash = hash_new (); |
| 3393 | } |
| 3394 | |
| 3395 | static int |
| 3396 | is_accumulator (operand) |
| 3397 | struct opstruct *operand; |
| 3398 | { |
| 3399 | return strcasecmp (operand->buf, "a") == 0 |
| 3400 | || strcasecmp (operand->buf, "b") == 0; |
| 3401 | } |
| 3402 | |
| 3403 | /* Return the number of operands found, or -1 on error, copying the |
| 3404 | operands into the given array and the accompanying expressions into |
| 3405 | the next array. */ |
| 3406 | |
| 3407 | static int |
| 3408 | get_operands (operands, line) |
| 3409 | struct opstruct operands[]; |
| 3410 | char *line; |
| 3411 | { |
| 3412 | char *lptr = line; |
| 3413 | int numexp = 0; |
| 3414 | int expecting_operand = 0; |
| 3415 | int i; |
| 3416 | |
| 3417 | while (numexp < MAX_OPERANDS && !is_end_of_line[(int) *lptr]) |
| 3418 | { |
| 3419 | int paren_not_balanced = 0; |
| 3420 | char *op_start, *op_end; |
| 3421 | |
| 3422 | while (*lptr && ISSPACE (*lptr)) |
| 3423 | ++lptr; |
| 3424 | op_start = lptr; |
| 3425 | while (paren_not_balanced || *lptr != ',') |
| 3426 | { |
| 3427 | if (*lptr == '\0') |
| 3428 | { |
| 3429 | if (paren_not_balanced) |
| 3430 | { |
| 3431 | as_bad ("Unbalanced parenthesis in operand %d", numexp); |
| 3432 | return -1; |
| 3433 | } |
| 3434 | else |
| 3435 | break; |
| 3436 | } |
| 3437 | if (*lptr == '(') |
| 3438 | ++paren_not_balanced; |
| 3439 | else if (*lptr == ')') |
| 3440 | --paren_not_balanced; |
| 3441 | ++lptr; |
| 3442 | } |
| 3443 | op_end = lptr; |
| 3444 | if (op_end != op_start) |
| 3445 | { |
| 3446 | int len = op_end - op_start; |
| 3447 | |
| 3448 | strncpy (operands[numexp].buf, op_start, len); |
| 3449 | operands[numexp].buf[len] = 0; |
| 3450 | /* Trim trailing spaces; while the preprocessor gets rid of most, |
| 3451 | there are weird usage patterns that can introduce them |
| 3452 | (i.e. using strings for macro args). */ |
| 3453 | while (len > 0 && ISSPACE (operands[numexp].buf[len - 1])) |
| 3454 | operands[numexp].buf[--len] = 0; |
| 3455 | lptr = op_end; |
| 3456 | ++numexp; |
| 3457 | } |
| 3458 | else |
| 3459 | { |
| 3460 | if (expecting_operand || *lptr == ',') |
| 3461 | { |
| 3462 | as_bad ("Expecting operand after ','"); |
| 3463 | return -1; |
| 3464 | } |
| 3465 | } |
| 3466 | if (*lptr == ',') |
| 3467 | { |
| 3468 | if (*++lptr == '\0') |
| 3469 | { |
| 3470 | as_bad ("Expecting operand after ','"); |
| 3471 | return -1; |
| 3472 | } |
| 3473 | expecting_operand = 1; |
| 3474 | } |
| 3475 | } |
| 3476 | |
| 3477 | while (*lptr && ISSPACE (*lptr++)) |
| 3478 | ; |
| 3479 | if (!is_end_of_line[(int) *lptr]) |
| 3480 | { |
| 3481 | as_bad ("Extra junk on line"); |
| 3482 | return -1; |
| 3483 | } |
| 3484 | |
| 3485 | /* OK, now parse them into expressions. */ |
| 3486 | for (i = 0; i < numexp; i++) |
| 3487 | { |
| 3488 | memset (&operands[i].exp, 0, sizeof (operands[i].exp)); |
| 3489 | if (operands[i].buf[0] == '#') |
| 3490 | { |
| 3491 | /* Immediate. */ |
| 3492 | parse_expression (operands[i].buf + 1, &operands[i].exp); |
| 3493 | } |
| 3494 | else if (operands[i].buf[0] == '@') |
| 3495 | { |
| 3496 | /* Direct notation. */ |
| 3497 | parse_expression (operands[i].buf + 1, &operands[i].exp); |
| 3498 | } |
| 3499 | else if (operands[i].buf[0] == '*') |
| 3500 | { |
| 3501 | /* Indirect. */ |
| 3502 | char *paren = strchr (operands[i].buf, '('); |
| 3503 | |
| 3504 | /* Allow immediate syntax in the inner expression. */ |
| 3505 | if (paren && paren[1] == '#') |
| 3506 | *++paren = '('; |
| 3507 | |
| 3508 | /* Pull out the lk expression or SP offset, if present. */ |
| 3509 | if (paren != NULL) |
| 3510 | { |
| 3511 | int len = strlen (paren); |
| 3512 | char *end = paren + len; |
| 3513 | int c; |
| 3514 | |
| 3515 | while (end[-1] != ')') |
| 3516 | if (--end <= paren) |
| 3517 | { |
| 3518 | as_bad (_("Badly formed address expression")); |
| 3519 | return -1; |
| 3520 | } |
| 3521 | c = *end; |
| 3522 | *end = '\0'; |
| 3523 | parse_expression (paren, &operands[i].exp); |
| 3524 | *end = c; |
| 3525 | } |
| 3526 | else |
| 3527 | operands[i].exp.X_op = O_absent; |
| 3528 | } |
| 3529 | else |
| 3530 | parse_expression (operands[i].buf, &operands[i].exp); |
| 3531 | } |
| 3532 | |
| 3533 | return numexp; |
| 3534 | } |
| 3535 | |
| 3536 | /* Predicates for different operand types. */ |
| 3537 | |
| 3538 | static int |
| 3539 | is_immediate (operand) |
| 3540 | struct opstruct *operand; |
| 3541 | { |
| 3542 | return *operand->buf == '#'; |
| 3543 | } |
| 3544 | |
| 3545 | /* This is distinguished from immediate because some numbers must be constants |
| 3546 | and must *not* have the '#' prefix. */ |
| 3547 | |
| 3548 | static int |
| 3549 | is_absolute (operand) |
| 3550 | struct opstruct *operand; |
| 3551 | { |
| 3552 | return operand->exp.X_op == O_constant && !is_immediate (operand); |
| 3553 | } |
| 3554 | |
| 3555 | /* Is this an indirect operand? */ |
| 3556 | |
| 3557 | static int |
| 3558 | is_indirect (operand) |
| 3559 | struct opstruct *operand; |
| 3560 | { |
| 3561 | return operand->buf[0] == '*'; |
| 3562 | } |
| 3563 | |
| 3564 | /* Is this a valid dual-memory operand? */ |
| 3565 | |
| 3566 | static int |
| 3567 | is_dual (operand) |
| 3568 | struct opstruct *operand; |
| 3569 | { |
| 3570 | if (is_indirect (operand) && strncasecmp (operand->buf, "*ar", 3) == 0) |
| 3571 | { |
| 3572 | char *tmp = operand->buf + 3; |
| 3573 | int arf; |
| 3574 | int valid_mod; |
| 3575 | |
| 3576 | arf = *tmp++ - '0'; |
| 3577 | /* Only allow *ARx, *ARx-, *ARx+, or *ARx+0%. */ |
| 3578 | valid_mod = *tmp == '\0' || |
| 3579 | strcasecmp (tmp, "-") == 0 || |
| 3580 | strcasecmp (tmp, "+") == 0 || |
| 3581 | strcasecmp (tmp, "+0%") == 0; |
| 3582 | return arf >= 2 && arf <= 5 && valid_mod; |
| 3583 | } |
| 3584 | return 0; |
| 3585 | } |
| 3586 | |
| 3587 | static int |
| 3588 | is_mmreg (operand) |
| 3589 | struct opstruct *operand; |
| 3590 | { |
| 3591 | return (is_absolute (operand) |
| 3592 | || is_immediate (operand) |
| 3593 | || hash_find (mmreg_hash, operand->buf) != 0); |
| 3594 | } |
| 3595 | |
| 3596 | static int |
| 3597 | is_type (operand, type) |
| 3598 | struct opstruct *operand; |
| 3599 | enum optype type; |
| 3600 | { |
| 3601 | switch (type) |
| 3602 | { |
| 3603 | case OP_None: |
| 3604 | return operand->buf[0] == 0; |
| 3605 | case OP_Xmem: |
| 3606 | case OP_Ymem: |
| 3607 | return is_dual (operand); |
| 3608 | case OP_Sind: |
| 3609 | return is_indirect (operand); |
| 3610 | case OP_xpmad_ms7: |
| 3611 | /* This one *must* be immediate. */ |
| 3612 | return is_immediate (operand); |
| 3613 | case OP_xpmad: |
| 3614 | case OP_pmad: |
| 3615 | case OP_PA: |
| 3616 | case OP_dmad: |
| 3617 | case OP_Lmem: |
| 3618 | case OP_MMR: |
| 3619 | return 1; |
| 3620 | case OP_Smem: |
| 3621 | /* Address may be a numeric, indirect, or an expression. */ |
| 3622 | return !is_immediate (operand); |
| 3623 | case OP_MMRY: |
| 3624 | case OP_MMRX: |
| 3625 | return is_mmreg (operand); |
| 3626 | case OP_SRC: |
| 3627 | case OP_SRC1: |
| 3628 | case OP_RND: |
| 3629 | case OP_DST: |
| 3630 | return is_accumulator (operand); |
| 3631 | case OP_B: |
| 3632 | return is_accumulator (operand) && TOUPPER (operand->buf[0]) == 'B'; |
| 3633 | case OP_A: |
| 3634 | return is_accumulator (operand) && TOUPPER (operand->buf[0]) == 'A'; |
| 3635 | case OP_ARX: |
| 3636 | return strncasecmp ("ar", operand->buf, 2) == 0 |
| 3637 | && ISDIGIT (operand->buf[2]); |
| 3638 | case OP_SBIT: |
| 3639 | return hash_find (sbit_hash, operand->buf) != 0 || is_absolute (operand); |
| 3640 | case OP_CC: |
| 3641 | return hash_find (cc_hash, operand->buf) != 0; |
| 3642 | case OP_CC2: |
| 3643 | return hash_find (cc2_hash, operand->buf) != 0; |
| 3644 | case OP_CC3: |
| 3645 | return hash_find (cc3_hash, operand->buf) != 0 |
| 3646 | || is_immediate (operand) || is_absolute (operand); |
| 3647 | case OP_16: |
| 3648 | return (is_immediate (operand) || is_absolute (operand)) |
| 3649 | && operand->exp.X_add_number == 16; |
| 3650 | case OP_N: |
| 3651 | /* Allow st0 or st1 instead of a numeric. */ |
| 3652 | return is_absolute (operand) || is_immediate (operand) || |
| 3653 | strcasecmp ("st0", operand->buf) == 0 || |
| 3654 | strcasecmp ("st1", operand->buf) == 0; |
| 3655 | case OP_12: |
| 3656 | case OP_123: |
| 3657 | return is_absolute (operand) || is_immediate (operand); |
| 3658 | case OP_SHFT: |
| 3659 | return (is_immediate (operand) || is_absolute (operand)) |
| 3660 | && operand->exp.X_add_number >= 0 && operand->exp.X_add_number < 16; |
| 3661 | case OP_SHIFT: |
| 3662 | /* Let this one catch out-of-range values. */ |
| 3663 | return (is_immediate (operand) || is_absolute (operand)) |
| 3664 | && operand->exp.X_add_number != 16; |
| 3665 | case OP_BITC: |
| 3666 | case OP_031: |
| 3667 | case OP_k8: |
| 3668 | return is_absolute (operand) || is_immediate (operand); |
| 3669 | case OP_k8u: |
| 3670 | return is_immediate (operand) |
| 3671 | && operand->exp.X_op == O_constant |
| 3672 | && operand->exp.X_add_number >= 0 |
| 3673 | && operand->exp.X_add_number < 256; |
| 3674 | case OP_lk: |
| 3675 | case OP_lku: |
| 3676 | /* Allow anything; assumes opcodes are ordered with Smem operands |
| 3677 | versions first. */ |
| 3678 | return 1; |
| 3679 | case OP_k5: |
| 3680 | case OP_k3: |
| 3681 | case OP_k9: |
| 3682 | /* Just make sure it's an integer; check range later. */ |
| 3683 | return is_immediate (operand); |
| 3684 | case OP_T: |
| 3685 | return strcasecmp ("t", operand->buf) == 0 || |
| 3686 | strcasecmp ("treg", operand->buf) == 0; |
| 3687 | case OP_TS: |
| 3688 | return strcasecmp ("ts", operand->buf) == 0; |
| 3689 | case OP_ASM: |
| 3690 | return strcasecmp ("asm", operand->buf) == 0; |
| 3691 | case OP_TRN: |
| 3692 | return strcasecmp ("trn", operand->buf) == 0; |
| 3693 | case OP_DP: |
| 3694 | return strcasecmp ("dp", operand->buf) == 0; |
| 3695 | case OP_ARP: |
| 3696 | return strcasecmp ("arp", operand->buf) == 0; |
| 3697 | default: |
| 3698 | return 0; |
| 3699 | } |
| 3700 | } |
| 3701 | |
| 3702 | static int |
| 3703 | operands_match (insn, operands, opcount, refoptype, minops, maxops) |
| 3704 | tic54x_insn *insn; |
| 3705 | struct opstruct *operands; |
| 3706 | int opcount; |
| 3707 | const enum optype *refoptype; |
| 3708 | int minops; |
| 3709 | int maxops; |
| 3710 | { |
| 3711 | int op = 0, refop = 0; |
| 3712 | |
| 3713 | if (opcount == 0 && minops == 0) |
| 3714 | return 1; |
| 3715 | |
| 3716 | while (op <= maxops && refop <= maxops) |
| 3717 | { |
| 3718 | while (!is_type (&operands[op], OPTYPE (refoptype[refop]))) |
| 3719 | { |
| 3720 | /* Skip an optional template operand if it doesn't agree |
| 3721 | with the current operand. */ |
| 3722 | if (refoptype[refop] & OPT) |
| 3723 | { |
| 3724 | ++refop; |
| 3725 | --maxops; |
| 3726 | if (refop > maxops) |
| 3727 | return 0; |
| 3728 | } |
| 3729 | else |
| 3730 | return 0; |
| 3731 | } |
| 3732 | |
| 3733 | /* Save the actual operand type for later use. */ |
| 3734 | operands[op].type = OPTYPE (refoptype[refop]); |
| 3735 | ++refop; |
| 3736 | ++op; |
| 3737 | /* Have we matched them all yet? */ |
| 3738 | if (op == opcount) |
| 3739 | { |
| 3740 | while (op < maxops) |
| 3741 | { |
| 3742 | /* If a later operand is *not* optional, no match. */ |
| 3743 | if ((refoptype[refop] & OPT) == 0) |
| 3744 | return 0; |
| 3745 | /* Flag any implicit default OP_DST operands so we know to add |
| 3746 | them explicitly when encoding the operand later. */ |
| 3747 | if (OPTYPE (refoptype[refop]) == OP_DST) |
| 3748 | insn->using_default_dst = 1; |
| 3749 | ++refop; |
| 3750 | ++op; |
| 3751 | } |
| 3752 | |
| 3753 | return 1; |
| 3754 | } |
| 3755 | } |
| 3756 | |
| 3757 | return 0; |
| 3758 | } |
| 3759 | |
| 3760 | /* 16-bit direct memory address |
| 3761 | Explicit dmad operands are always in last word of insn (usually second |
| 3762 | word, but bumped to third if lk addressing is used) |
| 3763 | |
| 3764 | We allow *(dmad) notation because the TI assembler allows it. |
| 3765 | |
| 3766 | XPC_CODE: |
| 3767 | 0 for 16-bit addresses |
| 3768 | 1 for full 23-bit addresses |
| 3769 | 2 for the upper 7 bits of a 23-bit address (LDX). */ |
| 3770 | |
| 3771 | static int |
| 3772 | encode_dmad (insn, operand, xpc_code) |
| 3773 | tic54x_insn *insn; |
| 3774 | struct opstruct *operand; |
| 3775 | int xpc_code; |
| 3776 | { |
| 3777 | int op = 1 + insn->is_lkaddr; |
| 3778 | |
| 3779 | /* Only allow *(dmad) expressions; all others are invalid. */ |
| 3780 | if (is_indirect (operand) && operand->buf[strlen (operand->buf) - 1] != ')') |
| 3781 | { |
| 3782 | as_bad (_("Invalid dmad syntax '%s'"), operand->buf); |
| 3783 | return 0; |
| 3784 | } |
| 3785 | |
| 3786 | insn->opcode[op].addr_expr = operand->exp; |
| 3787 | |
| 3788 | if (insn->opcode[op].addr_expr.X_op == O_constant) |
| 3789 | { |
| 3790 | valueT value = insn->opcode[op].addr_expr.X_add_number; |
| 3791 | |
| 3792 | if (xpc_code == 1) |
| 3793 | { |
| 3794 | insn->opcode[0].word &= 0xFF80; |
| 3795 | insn->opcode[0].word |= (value >> 16) & 0x7F; |
| 3796 | insn->opcode[1].word = value & 0xFFFF; |
| 3797 | } |
| 3798 | else if (xpc_code == 2) |
| 3799 | insn->opcode[op].word = (value >> 16) & 0xFFFF; |
| 3800 | else |
| 3801 | insn->opcode[op].word = value; |
| 3802 | } |
| 3803 | else |
| 3804 | { |
| 3805 | /* Do the fixup later; just store the expression. */ |
| 3806 | insn->opcode[op].word = 0; |
| 3807 | insn->opcode[op].r_nchars = 2; |
| 3808 | |
| 3809 | if (amode == c_mode) |
| 3810 | insn->opcode[op].r_type = BFD_RELOC_TIC54X_16_OF_23; |
| 3811 | else if (xpc_code == 1) |
| 3812 | { |
| 3813 | /* This relocation spans two words, so adjust accordingly. */ |
| 3814 | insn->opcode[0].addr_expr = operand->exp; |
| 3815 | insn->opcode[0].r_type = BFD_RELOC_TIC54X_23; |
| 3816 | insn->opcode[0].r_nchars = 4; |
| 3817 | insn->opcode[0].unresolved = 1; |
| 3818 | /* It's really 2 words, but we want to stop encoding after the |
| 3819 | first, since we must encode both words at once. */ |
| 3820 | insn->words = 1; |
| 3821 | } |
| 3822 | else if (xpc_code == 2) |
| 3823 | insn->opcode[op].r_type = BFD_RELOC_TIC54X_MS7_OF_23; |
| 3824 | else |
| 3825 | insn->opcode[op].r_type = BFD_RELOC_TIC54X_16_OF_23; |
| 3826 | |
| 3827 | insn->opcode[op].unresolved = 1; |
| 3828 | } |
| 3829 | |
| 3830 | return 1; |
| 3831 | } |
| 3832 | |
| 3833 | /* 7-bit direct address encoding. */ |
| 3834 | |
| 3835 | static int |
| 3836 | encode_address (insn, operand) |
| 3837 | tic54x_insn *insn; |
| 3838 | struct opstruct *operand; |
| 3839 | { |
| 3840 | /* Assumes that dma addresses are *always* in word 0 of the opcode. */ |
| 3841 | insn->opcode[0].addr_expr = operand->exp; |
| 3842 | |
| 3843 | if (operand->exp.X_op == O_constant) |
| 3844 | insn->opcode[0].word |= (operand->exp.X_add_number & 0x7F); |
| 3845 | else |
| 3846 | { |
| 3847 | if (operand->exp.X_op == O_register) |
| 3848 | as_bad (_("Use the .mmregs directive to use memory-mapped register names such as '%s'"), operand->buf); |
| 3849 | /* Do the fixup later; just store the expression. */ |
| 3850 | insn->opcode[0].r_nchars = 1; |
| 3851 | insn->opcode[0].r_type = BFD_RELOC_TIC54X_PARTLS7; |
| 3852 | insn->opcode[0].unresolved = 1; |
| 3853 | } |
| 3854 | |
| 3855 | return 1; |
| 3856 | } |
| 3857 | |
| 3858 | static int |
| 3859 | encode_indirect (insn, operand) |
| 3860 | tic54x_insn *insn; |
| 3861 | struct opstruct *operand; |
| 3862 | { |
| 3863 | int arf; |
| 3864 | int mod; |
| 3865 | |
| 3866 | if (insn->is_lkaddr) |
| 3867 | { |
| 3868 | /* lk addresses always go in the second insn word. */ |
| 3869 | mod = ((TOUPPER (operand->buf[1]) == 'A') ? 12 : |
| 3870 | (operand->buf[1] == '(') ? 15 : |
| 3871 | (strchr (operand->buf, '%') != NULL) ? 14 : 13); |
| 3872 | arf = ((mod == 12) ? operand->buf[3] - '0' : |
| 3873 | (mod == 15) ? 0 : operand->buf[4] - '0'); |
| 3874 | |
| 3875 | insn->opcode[1].addr_expr = operand->exp; |
| 3876 | |
| 3877 | if (operand->exp.X_op == O_constant) |
| 3878 | insn->opcode[1].word = operand->exp.X_add_number; |
| 3879 | else |
| 3880 | { |
| 3881 | insn->opcode[1].word = 0; |
| 3882 | insn->opcode[1].r_nchars = 2; |
| 3883 | insn->opcode[1].r_type = BFD_RELOC_TIC54X_16_OF_23; |
| 3884 | insn->opcode[1].unresolved = 1; |
| 3885 | } |
| 3886 | } |
| 3887 | else if (strncasecmp (operand->buf, "*sp (", 4) == 0) |
| 3888 | { |
| 3889 | /* Stack offsets look the same as 7-bit direct addressing. */ |
| 3890 | return encode_address (insn, operand); |
| 3891 | } |
| 3892 | else |
| 3893 | { |
| 3894 | arf = (TOUPPER (operand->buf[1]) == 'A' ? |
| 3895 | operand->buf[3] : operand->buf[4]) - '0'; |
| 3896 | |
| 3897 | if (operand->buf[1] == '+') |
| 3898 | { |
| 3899 | mod = 3; /* *+ARx */ |
| 3900 | if (insn->tm->flags & FL_SMR) |
| 3901 | as_warn (_("Address mode *+ARx is write-only. " |
| 3902 | "Results of reading are undefined.")); |
| 3903 | } |
| 3904 | else if (operand->buf[4] == '\0') |
| 3905 | mod = 0; /* *ARx */ |
| 3906 | else if (operand->buf[5] == '\0') |
| 3907 | mod = (operand->buf[4] == '-' ? 1 : 2); /* *ARx+ / *ARx- */ |
| 3908 | else if (operand->buf[6] == '\0') |
| 3909 | { |
| 3910 | if (operand->buf[5] == '0') |
| 3911 | mod = (operand->buf[4] == '-' ? 5 : 6); /* *ARx+0 / *ARx-0 */ |
| 3912 | else |
| 3913 | mod = (operand->buf[4] == '-' ? 8 : 10);/* *ARx+% / *ARx-% */ |
| 3914 | } |
| 3915 | else if (TOUPPER (operand->buf[6]) == 'B') |
| 3916 | mod = (operand->buf[4] == '-' ? 4 : 7); /* ARx+0B / *ARx-0B */ |
| 3917 | else if (TOUPPER (operand->buf[6]) == '%') |
| 3918 | mod = (operand->buf[4] == '-' ? 9 : 11); /* ARx+0% / *ARx - 0% */ |
| 3919 | else |
| 3920 | { |
| 3921 | as_bad (_("Unrecognized indirect address format \"%s\""), |
| 3922 | operand->buf); |
| 3923 | return 0; |
| 3924 | } |
| 3925 | } |
| 3926 | |
| 3927 | insn->opcode[0].word |= 0x80 | (mod << 3) | arf; |
| 3928 | |
| 3929 | return 1; |
| 3930 | } |
| 3931 | |
| 3932 | static int |
| 3933 | encode_integer (insn, operand, which, min, max, mask) |
| 3934 | tic54x_insn *insn; |
| 3935 | struct opstruct *operand; |
| 3936 | int which; |
| 3937 | int min; |
| 3938 | int max; |
| 3939 | unsigned short mask; |
| 3940 | { |
| 3941 | long parse, integer; |
| 3942 | |
| 3943 | insn->opcode[which].addr_expr = operand->exp; |
| 3944 | |
| 3945 | if (operand->exp.X_op == O_constant) |
| 3946 | { |
| 3947 | parse = operand->exp.X_add_number; |
| 3948 | /* Hack -- fixup for 16-bit hex quantities that get converted positive |
| 3949 | instead of negative. */ |
| 3950 | if ((parse & 0x8000) && min == -32768 && max == 32767) |
| 3951 | integer = (short) parse; |
| 3952 | else |
| 3953 | integer = parse; |
| 3954 | |
| 3955 | if (integer >= min && integer <= max) |
| 3956 | { |
| 3957 | insn->opcode[which].word |= (integer & mask); |
| 3958 | return 1; |
| 3959 | } |
| 3960 | as_bad (_("Operand '%s' out of range (%d <= x <= %d)"), |
| 3961 | operand->buf, min, max); |
| 3962 | } |
| 3963 | else |
| 3964 | { |
| 3965 | if (insn->opcode[which].addr_expr.X_op == O_constant) |
| 3966 | { |
| 3967 | insn->opcode[which].word |= |
| 3968 | insn->opcode[which].addr_expr.X_add_number & mask; |
| 3969 | } |
| 3970 | else |
| 3971 | { |
| 3972 | /* Do the fixup later; just store the expression. */ |
| 3973 | bfd_reloc_code_real_type rtype = |
| 3974 | (mask == 0x1FF ? BFD_RELOC_TIC54X_PARTMS9 : |
| 3975 | mask == 0xFFFF ? BFD_RELOC_TIC54X_16_OF_23 : |
| 3976 | mask == 0x7F ? BFD_RELOC_TIC54X_PARTLS7 : BFD_RELOC_8); |
| 3977 | int size = (mask == 0x1FF || mask == 0xFFFF) ? 2 : 1; |
| 3978 | |
| 3979 | if (rtype == BFD_RELOC_8) |
| 3980 | as_bad (_("Error in relocation handling")); |
| 3981 | |
| 3982 | insn->opcode[which].r_nchars = size; |
| 3983 | insn->opcode[which].r_type = rtype; |
| 3984 | insn->opcode[which].unresolved = 1; |
| 3985 | } |
| 3986 | |
| 3987 | return 1; |
| 3988 | } |
| 3989 | |
| 3990 | return 0; |
| 3991 | } |
| 3992 | |
| 3993 | static int |
| 3994 | encode_condition (insn, operand) |
| 3995 | tic54x_insn *insn; |
| 3996 | struct opstruct *operand; |
| 3997 | { |
| 3998 | symbol *cc = (symbol *) hash_find (cc_hash, operand->buf); |
| 3999 | if (!cc) |
| 4000 | { |
| 4001 | as_bad (_("Unrecognized condition code \"%s\""), operand->buf); |
| 4002 | return 0; |
| 4003 | } |
| 4004 | #define CC_GROUP 0x40 |
| 4005 | #define CC_ACC 0x08 |
| 4006 | #define CATG_A1 0x07 |
| 4007 | #define CATG_B1 0x30 |
| 4008 | #define CATG_A2 0x30 |
| 4009 | #define CATG_B2 0x0C |
| 4010 | #define CATG_C2 0x03 |
| 4011 | /* Disallow group 1 conditions mixed with group 2 conditions |
| 4012 | if group 1, allow only one category A and one category B |
| 4013 | if group 2, allow only one each of category A, B, and C. */ |
| 4014 | if (((insn->opcode[0].word & 0xFF) != 0)) |
| 4015 | { |
| 4016 | if ((insn->opcode[0].word & CC_GROUP) != (cc->value & CC_GROUP)) |
| 4017 | { |
| 4018 | as_bad (_("Condition \"%s\" does not match preceding group"), |
| 4019 | operand->buf); |
| 4020 | return 0; |
| 4021 | } |
| 4022 | if (insn->opcode[0].word & CC_GROUP) |
| 4023 | { |
| 4024 | if ((insn->opcode[0].word & CC_ACC) != (cc->value & CC_ACC)) |
| 4025 | { |
| 4026 | as_bad (_("Condition \"%s\" uses a different accumulator from " |
| 4027 | "a preceding condition"), |
| 4028 | operand->buf); |
| 4029 | return 0; |
| 4030 | } |
| 4031 | if ((insn->opcode[0].word & CATG_A1) && (cc->value & CATG_A1)) |
| 4032 | { |
| 4033 | as_bad (_("Only one comparison conditional allowed")); |
| 4034 | return 0; |
| 4035 | } |
| 4036 | if ((insn->opcode[0].word & CATG_B1) && (cc->value & CATG_B1)) |
| 4037 | { |
| 4038 | as_bad (_("Only one overflow conditional allowed")); |
| 4039 | return 0; |
| 4040 | } |
| 4041 | } |
| 4042 | else if ( ((insn->opcode[0].word & CATG_A2) && (cc->value & CATG_A2)) |
| 4043 | || ((insn->opcode[0].word & CATG_B2) && (cc->value & CATG_B2)) |
| 4044 | || ((insn->opcode[0].word & CATG_C2) && (cc->value & CATG_C2))) |
| 4045 | { |
| 4046 | as_bad (_("Duplicate %s conditional"), operand->buf); |
| 4047 | return 0; |
| 4048 | } |
| 4049 | } |
| 4050 | |
| 4051 | insn->opcode[0].word |= cc->value; |
| 4052 | return 1; |
| 4053 | } |
| 4054 | |
| 4055 | static int |
| 4056 | encode_cc3 (insn, operand) |
| 4057 | tic54x_insn *insn; |
| 4058 | struct opstruct *operand; |
| 4059 | { |
| 4060 | symbol *cc3 = (symbol *) hash_find (cc3_hash, operand->buf); |
| 4061 | int value = cc3 ? cc3->value : operand->exp.X_add_number << 8; |
| 4062 | |
| 4063 | if ((value & 0x0300) != value) |
| 4064 | { |
| 4065 | as_bad (_("Unrecognized condition code \"%s\""), operand->buf); |
| 4066 | return 0; |
| 4067 | } |
| 4068 | insn->opcode[0].word |= value; |
| 4069 | return 1; |
| 4070 | } |
| 4071 | |
| 4072 | static int |
| 4073 | encode_arx (insn, operand) |
| 4074 | tic54x_insn *insn; |
| 4075 | struct opstruct *operand; |
| 4076 | { |
| 4077 | int arf = strlen (operand->buf) >= 3 ? operand->buf[2] - '0' : -1; |
| 4078 | |
| 4079 | if (strncasecmp ("ar", operand->buf, 2) || arf < 0 || arf > 7) |
| 4080 | { |
| 4081 | as_bad (_("Invalid auxiliary register (use AR0-AR7)")); |
| 4082 | return 0; |
| 4083 | } |
| 4084 | insn->opcode[0].word |= arf; |
| 4085 | return 1; |
| 4086 | } |
| 4087 | |
| 4088 | static int |
| 4089 | encode_cc2 (insn, operand) |
| 4090 | tic54x_insn *insn; |
| 4091 | struct opstruct *operand; |
| 4092 | { |
| 4093 | symbol *cc2 = (symbol *) hash_find (cc2_hash, operand->buf); |
| 4094 | |
| 4095 | if (!cc2) |
| 4096 | { |
| 4097 | as_bad (_("Unrecognized condition code \"%s\""), operand->buf); |
| 4098 | return 0; |
| 4099 | } |
| 4100 | insn->opcode[0].word |= cc2->value; |
| 4101 | return 1; |
| 4102 | } |
| 4103 | |
| 4104 | static int |
| 4105 | encode_operand (insn, type, operand) |
| 4106 | tic54x_insn *insn; |
| 4107 | enum optype type; |
| 4108 | struct opstruct *operand; |
| 4109 | { |
| 4110 | int ext = (insn->tm->flags & FL_EXT) != 0; |
| 4111 | |
| 4112 | if (type == OP_MMR && operand->exp.X_op != O_constant) |
| 4113 | { |
| 4114 | /* Disallow long-constant addressing for memory-mapped addressing. */ |
| 4115 | if (insn->is_lkaddr) |
| 4116 | { |
| 4117 | as_bad (_("lk addressing modes are invalid for memory-mapped " |
| 4118 | "register addressing")); |
| 4119 | return 0; |
| 4120 | } |
| 4121 | type = OP_Smem; |
| 4122 | /* Warn about *+ARx when used with MMR operands. */ |
| 4123 | if (strncasecmp (operand->buf, "*+ar", 4) == 0) |
| 4124 | { |
| 4125 | as_warn (_("Address mode *+ARx is not allowed in memory-mapped " |
| 4126 | "register addressing. Resulting behavior is " |
| 4127 | "undefined.")); |
| 4128 | } |
| 4129 | } |
| 4130 | |
| 4131 | switch (type) |
| 4132 | { |
| 4133 | case OP_None: |
| 4134 | return 1; |
| 4135 | case OP_dmad: |
| 4136 | /* 16-bit immediate value. */ |
| 4137 | return encode_dmad (insn, operand, 0); |
| 4138 | case OP_SRC: |
| 4139 | if (TOUPPER (*operand->buf) == 'B') |
| 4140 | { |
| 4141 | insn->opcode[ext ? (1 + insn->is_lkaddr) : 0].word |= (1 << 9); |
| 4142 | if (insn->using_default_dst) |
| 4143 | insn->opcode[ext ? (1 + insn->is_lkaddr) : 0].word |= (1 << 8); |
| 4144 | } |
| 4145 | return 1; |
| 4146 | case OP_RND: |
| 4147 | /* Make sure this agrees with the OP_DST operand. */ |
| 4148 | if (!((TOUPPER (operand->buf[0]) == 'B') ^ |
| 4149 | ((insn->opcode[0].word & (1 << 8)) != 0))) |
| 4150 | { |
| 4151 | as_bad (_("Destination accumulator for each part of this parallel " |
| 4152 | "instruction must be different")); |
| 4153 | return 0; |
| 4154 | } |
| 4155 | return 1; |
| 4156 | case OP_SRC1: |
| 4157 | case OP_DST: |
| 4158 | if (TOUPPER (operand->buf[0]) == 'B') |
| 4159 | insn->opcode[ext ? (1 + insn->is_lkaddr) : 0].word |= (1 << 8); |
| 4160 | return 1; |
| 4161 | case OP_Xmem: |
| 4162 | case OP_Ymem: |
| 4163 | { |
| 4164 | int mod = (operand->buf[4] == '\0' ? 0 : /* *arx */ |
| 4165 | operand->buf[4] == '-' ? 1 : /* *arx- */ |
| 4166 | operand->buf[5] == '\0' ? 2 : 3); /* *arx+, *arx+0% */ |
| 4167 | int arf = operand->buf[3] - '0' - 2; |
| 4168 | int code = (mod << 2) | arf; |
| 4169 | insn->opcode[0].word |= (code << (type == OP_Xmem ? 4 : 0)); |
| 4170 | return 1; |
| 4171 | } |
| 4172 | case OP_Lmem: |
| 4173 | case OP_Smem: |
| 4174 | if (!is_indirect (operand)) |
| 4175 | return encode_address (insn, operand); |
| 4176 | /* Fall through. */ |
| 4177 | case OP_Sind: |
| 4178 | return encode_indirect (insn, operand); |
| 4179 | case OP_xpmad_ms7: |
| 4180 | return encode_dmad (insn, operand, 2); |
| 4181 | case OP_xpmad: |
| 4182 | return encode_dmad (insn, operand, 1); |
| 4183 | case OP_PA: |
| 4184 | case OP_pmad: |
| 4185 | return encode_dmad (insn, operand, 0); |
| 4186 | case OP_ARX: |
| 4187 | return encode_arx (insn, operand); |
| 4188 | case OP_MMRX: |
| 4189 | case OP_MMRY: |
| 4190 | case OP_MMR: |
| 4191 | { |
| 4192 | int value = operand->exp.X_add_number; |
| 4193 | |
| 4194 | if (type == OP_MMR) |
| 4195 | insn->opcode[0].word |= value; |
| 4196 | else |
| 4197 | { |
| 4198 | if (value < 16 || value > 24) |
| 4199 | { |
| 4200 | as_bad (_("Memory mapped register \"%s\" out of range"), |
| 4201 | operand->buf); |
| 4202 | return 0; |
| 4203 | } |
| 4204 | if (type == OP_MMRX) |
| 4205 | insn->opcode[0].word |= (value - 16) << 4; |
| 4206 | else |
| 4207 | insn->opcode[0].word |= (value - 16); |
| 4208 | } |
| 4209 | return 1; |
| 4210 | } |
| 4211 | case OP_B: |
| 4212 | case OP_A: |
| 4213 | return 1; |
| 4214 | case OP_SHFT: |
| 4215 | return encode_integer (insn, operand, ext + insn->is_lkaddr, |
| 4216 | 0, 15, 0xF); |
| 4217 | case OP_SHIFT: |
| 4218 | return encode_integer (insn, operand, ext + insn->is_lkaddr, |
| 4219 | -16, 15, 0x1F); |
| 4220 | case OP_lk: |
| 4221 | return encode_integer (insn, operand, 1 + insn->is_lkaddr, |
| 4222 | -32768, 32767, 0xFFFF); |
| 4223 | case OP_CC: |
| 4224 | return encode_condition (insn, operand); |
| 4225 | case OP_CC2: |
| 4226 | return encode_cc2 (insn, operand); |
| 4227 | case OP_CC3: |
| 4228 | return encode_cc3 (insn, operand); |
| 4229 | case OP_BITC: |
| 4230 | return encode_integer (insn, operand, 0, 0, 15, 0xF); |
| 4231 | case OP_k8: |
| 4232 | return encode_integer (insn, operand, 0, -128, 127, 0xFF); |
| 4233 | case OP_123: |
| 4234 | { |
| 4235 | int value = operand->exp.X_add_number; |
| 4236 | int code; |
| 4237 | if (value < 1 || value > 3) |
| 4238 | { |
| 4239 | as_bad (_("Invalid operand (use 1, 2, or 3)")); |
| 4240 | return 0; |
| 4241 | } |
| 4242 | code = value == 1 ? 0 : value == 2 ? 0x2 : 0x1; |
| 4243 | insn->opcode[0].word |= (code << 8); |
| 4244 | return 1; |
| 4245 | } |
| 4246 | case OP_031: |
| 4247 | return encode_integer (insn, operand, 0, 0, 31, 0x1F); |
| 4248 | case OP_k8u: |
| 4249 | return encode_integer (insn, operand, 0, 0, 255, 0xFF); |
| 4250 | case OP_lku: |
| 4251 | return encode_integer (insn, operand, 1 + insn->is_lkaddr, |
| 4252 | 0, 65535, 0xFFFF); |
| 4253 | case OP_SBIT: |
| 4254 | { |
| 4255 | symbol *sbit = (symbol *) hash_find (sbit_hash, operand->buf); |
| 4256 | int value = is_absolute (operand) ? |
| 4257 | operand->exp.X_add_number : (sbit ? sbit->value : -1); |
| 4258 | int reg = 0; |
| 4259 | |
| 4260 | if (insn->opcount == 1) |
| 4261 | { |
| 4262 | if (!sbit) |
| 4263 | { |
| 4264 | as_bad (_("A status register or status bit name is required")); |
| 4265 | return 0; |
| 4266 | } |
| 4267 | /* Guess the register based on the status bit; "ovb" is the last |
| 4268 | status bit defined for st0. */ |
| 4269 | if (sbit > (symbol *) hash_find (sbit_hash, "ovb")) |
| 4270 | reg = 1; |
| 4271 | } |
| 4272 | if (value == -1) |
| 4273 | { |
| 4274 | as_bad (_("Unrecognized status bit \"%s\""), operand->buf); |
| 4275 | return 0; |
| 4276 | } |
| 4277 | insn->opcode[0].word |= value; |
| 4278 | insn->opcode[0].word |= (reg << 9); |
| 4279 | return 1; |
| 4280 | } |
| 4281 | case OP_N: |
| 4282 | if (strcasecmp (operand->buf, "st0") == 0 |
| 4283 | || strcasecmp (operand->buf, "st1") == 0) |
| 4284 | { |
| 4285 | insn->opcode[0].word |= |
| 4286 | ((unsigned short) (operand->buf[2] - '0')) << 9; |
| 4287 | return 1; |
| 4288 | } |
| 4289 | else if (operand->exp.X_op == O_constant |
| 4290 | && (operand->exp.X_add_number == 0 |
| 4291 | || operand->exp.X_add_number == 1)) |
| 4292 | { |
| 4293 | insn->opcode[0].word |= |
| 4294 | ((unsigned short) (operand->exp.X_add_number)) << 9; |
| 4295 | return 1; |
| 4296 | } |
| 4297 | as_bad (_("Invalid status register \"%s\""), operand->buf); |
| 4298 | return 0; |
| 4299 | case OP_k5: |
| 4300 | return encode_integer (insn, operand, 0, -16, 15, 0x1F); |
| 4301 | case OP_k3: |
| 4302 | return encode_integer (insn, operand, 0, 0, 7, 0x7); |
| 4303 | case OP_k9: |
| 4304 | return encode_integer (insn, operand, 0, 0, 0x1FF, 0x1FF); |
| 4305 | case OP_12: |
| 4306 | if (operand->exp.X_add_number != 1 |
| 4307 | && operand->exp.X_add_number != 2) |
| 4308 | { |
| 4309 | as_bad (_("Operand \"%s\" out of range (use 1 or 2)"), operand->buf); |
| 4310 | return 0; |
| 4311 | } |
| 4312 | insn->opcode[0].word |= (operand->exp.X_add_number - 1) << 9; |
| 4313 | return 1; |
| 4314 | case OP_16: |
| 4315 | case OP_T: |
| 4316 | case OP_TS: |
| 4317 | case OP_ASM: |
| 4318 | case OP_TRN: |
| 4319 | case OP_DP: |
| 4320 | case OP_ARP: |
| 4321 | /* No encoding necessary. */ |
| 4322 | return 1; |
| 4323 | default: |
| 4324 | return 0; |
| 4325 | } |
| 4326 | |
| 4327 | return 1; |
| 4328 | } |
| 4329 | |
| 4330 | static void |
| 4331 | emit_insn (insn) |
| 4332 | tic54x_insn *insn; |
| 4333 | { |
| 4334 | int i; |
| 4335 | flagword oldflags = bfd_get_section_flags (stdoutput, now_seg); |
| 4336 | flagword flags = oldflags | SEC_CODE; |
| 4337 | |
| 4338 | if (! bfd_set_section_flags (stdoutput, now_seg, flags)) |
| 4339 | as_warn (_("error setting flags for \"%s\": %s"), |
| 4340 | bfd_section_name (stdoutput, now_seg), |
| 4341 | bfd_errmsg (bfd_get_error ())); |
| 4342 | |
| 4343 | for (i = 0; i < insn->words; i++) |
| 4344 | { |
| 4345 | int size = (insn->opcode[i].unresolved |
| 4346 | && insn->opcode[i].r_type == BFD_RELOC_TIC54X_23) ? 4 : 2; |
| 4347 | char *p = frag_more (size); |
| 4348 | |
| 4349 | if (size == 2) |
| 4350 | md_number_to_chars (p, (valueT) insn->opcode[i].word, 2); |
| 4351 | else |
| 4352 | md_number_to_chars (p, (valueT) insn->opcode[i].word << 16, 4); |
| 4353 | |
| 4354 | if (insn->opcode[i].unresolved) |
| 4355 | fix_new_exp (frag_now, p - frag_now->fr_literal, |
| 4356 | insn->opcode[i].r_nchars, &insn->opcode[i].addr_expr, |
| 4357 | FALSE, insn->opcode[i].r_type); |
| 4358 | } |
| 4359 | } |
| 4360 | |
| 4361 | /* Convert the operand strings into appropriate opcode values |
| 4362 | return the total number of words used by the instruction. */ |
| 4363 | |
| 4364 | static int |
| 4365 | build_insn (insn) |
| 4366 | tic54x_insn *insn; |
| 4367 | { |
| 4368 | int i; |
| 4369 | |
| 4370 | /* Only non-parallel instructions support lk addressing. */ |
| 4371 | if (!(insn->tm->flags & FL_PAR)) |
| 4372 | { |
| 4373 | for (i = 0; i < insn->opcount; i++) |
| 4374 | { |
| 4375 | if ((OPTYPE (insn->operands[i].type) == OP_Smem |
| 4376 | || OPTYPE (insn->operands[i].type) == OP_Lmem |
| 4377 | || OPTYPE (insn->operands[i].type) == OP_Sind) |
| 4378 | && strchr (insn->operands[i].buf, '(') |
| 4379 | /* Don't mistake stack-relative addressing for lk addressing. */ |
| 4380 | && strncasecmp (insn->operands[i].buf, "*sp (", 4) != 0) |
| 4381 | { |
| 4382 | insn->is_lkaddr = 1; |
| 4383 | insn->lkoperand = i; |
| 4384 | break; |
| 4385 | } |
| 4386 | } |
| 4387 | } |
| 4388 | insn->words = insn->tm->words + insn->is_lkaddr; |
| 4389 | |
| 4390 | insn->opcode[0].word = insn->tm->opcode; |
| 4391 | if (insn->tm->flags & FL_EXT) |
| 4392 | insn->opcode[1 + insn->is_lkaddr].word = insn->tm->opcode2; |
| 4393 | |
| 4394 | for (i = 0; i < insn->opcount; i++) |
| 4395 | { |
| 4396 | enum optype type = insn->operands[i].type; |
| 4397 | |
| 4398 | if (!encode_operand (insn, type, &insn->operands[i])) |
| 4399 | return 0; |
| 4400 | } |
| 4401 | if (insn->tm->flags & FL_PAR) |
| 4402 | for (i = 0; i < insn->paropcount; i++) |
| 4403 | { |
| 4404 | enum optype partype = insn->paroperands[i].type; |
| 4405 | |
| 4406 | if (!encode_operand (insn, partype, &insn->paroperands[i])) |
| 4407 | return 0; |
| 4408 | } |
| 4409 | |
| 4410 | emit_insn (insn); |
| 4411 | |
| 4412 | return insn->words; |
| 4413 | } |
| 4414 | |
| 4415 | static int |
| 4416 | optimize_insn (insn) |
| 4417 | tic54x_insn *insn; |
| 4418 | { |
| 4419 | /* Optimize some instructions, helping out the brain-dead programmer. */ |
| 4420 | #define is_zero(op) ((op).exp.X_op == O_constant && (op).exp.X_add_number == 0) |
| 4421 | if (strcasecmp (insn->tm->name, "add") == 0) |
| 4422 | { |
| 4423 | if (insn->opcount > 1 |
| 4424 | && is_accumulator (&insn->operands[insn->opcount - 2]) |
| 4425 | && is_accumulator (&insn->operands[insn->opcount - 1]) |
| 4426 | && strcasecmp (insn->operands[insn->opcount - 2].buf, |
| 4427 | insn->operands[insn->opcount - 1].buf) == 0) |
| 4428 | { |
| 4429 | --insn->opcount; |
| 4430 | insn->using_default_dst = 1; |
| 4431 | return 1; |
| 4432 | } |
| 4433 | |
| 4434 | /* Try to collapse if Xmem and shift count is zero. */ |
| 4435 | if ((OPTYPE (insn->tm->operand_types[0]) == OP_Xmem |
| 4436 | && OPTYPE (insn->tm->operand_types[1]) == OP_SHFT |
| 4437 | && is_zero (insn->operands[1])) |
| 4438 | /* Or if Smem, shift is zero or absent, and SRC == DST. */ |
| 4439 | || (OPTYPE (insn->tm->operand_types[0]) == OP_Smem |
| 4440 | && OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT |
| 4441 | && is_type (&insn->operands[1], OP_SHIFT) |
| 4442 | && is_zero (insn->operands[1]) && insn->opcount == 3)) |
| 4443 | { |
| 4444 | insn->operands[1] = insn->operands[2]; |
| 4445 | insn->opcount = 2; |
| 4446 | return 1; |
| 4447 | } |
| 4448 | } |
| 4449 | else if (strcasecmp (insn->tm->name, "ld") == 0) |
| 4450 | { |
| 4451 | if (insn->opcount == 3 && insn->operands[0].type != OP_SRC) |
| 4452 | { |
| 4453 | if ((OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT |
| 4454 | || OPTYPE (insn->tm->operand_types[1]) == OP_SHFT) |
| 4455 | && is_zero (insn->operands[1]) |
| 4456 | && (OPTYPE (insn->tm->operand_types[0]) != OP_lk |
| 4457 | || (insn->operands[0].exp.X_op == O_constant |
| 4458 | && insn->operands[0].exp.X_add_number <= 255 |
| 4459 | && insn->operands[0].exp.X_add_number >= 0))) |
| 4460 | { |
| 4461 | insn->operands[1] = insn->operands[2]; |
| 4462 | insn->opcount = 2; |
| 4463 | return 1; |
| 4464 | } |
| 4465 | } |
| 4466 | } |
| 4467 | else if (strcasecmp (insn->tm->name, "sth") == 0 |
| 4468 | || strcasecmp (insn->tm->name, "stl") == 0) |
| 4469 | { |
| 4470 | if ((OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT |
| 4471 | || OPTYPE (insn->tm->operand_types[1]) == OP_SHFT) |
| 4472 | && is_zero (insn->operands[1])) |
| 4473 | { |
| 4474 | insn->operands[1] = insn->operands[2]; |
| 4475 | insn->opcount = 2; |
| 4476 | return 1; |
| 4477 | } |
| 4478 | } |
| 4479 | else if (strcasecmp (insn->tm->name, "sub") == 0) |
| 4480 | { |
| 4481 | if (insn->opcount > 1 |
| 4482 | && is_accumulator (&insn->operands[insn->opcount - 2]) |
| 4483 | && is_accumulator (&insn->operands[insn->opcount - 1]) |
| 4484 | && strcasecmp (insn->operands[insn->opcount - 2].buf, |
| 4485 | insn->operands[insn->opcount - 1].buf) == 0) |
| 4486 | { |
| 4487 | --insn->opcount; |
| 4488 | insn->using_default_dst = 1; |
| 4489 | return 1; |
| 4490 | } |
| 4491 | |
| 4492 | if ( ((OPTYPE (insn->tm->operand_types[0]) == OP_Smem |
| 4493 | && OPTYPE (insn->tm->operand_types[1]) == OP_SHIFT) |
| 4494 | || (OPTYPE (insn->tm->operand_types[0]) == OP_Xmem |
| 4495 | && OPTYPE (insn->tm->operand_types[1]) == OP_SHFT)) |
| 4496 | && is_zero (insn->operands[1]) |
| 4497 | && insn->opcount == 3) |
| 4498 | { |
| 4499 | insn->operands[1] = insn->operands[2]; |
| 4500 | insn->opcount = 2; |
| 4501 | return 1; |
| 4502 | } |
| 4503 | } |
| 4504 | return 0; |
| 4505 | } |
| 4506 | |
| 4507 | /* Find a matching template if possible, and get the operand strings. */ |
| 4508 | |
| 4509 | static int |
| 4510 | tic54x_parse_insn (insn, line) |
| 4511 | tic54x_insn *insn; |
| 4512 | char *line; |
| 4513 | { |
| 4514 | insn->tm = (template *) hash_find (op_hash, insn->mnemonic); |
| 4515 | if (!insn->tm) |
| 4516 | { |
| 4517 | as_bad (_("Unrecognized instruction \"%s\""), insn->mnemonic); |
| 4518 | return 0; |
| 4519 | } |
| 4520 | |
| 4521 | insn->opcount = get_operands (insn->operands, line); |
| 4522 | if (insn->opcount < 0) |
| 4523 | return 0; |
| 4524 | |
| 4525 | /* Check each variation of operands for this mnemonic. */ |
| 4526 | while (insn->tm->name && strcasecmp (insn->tm->name, insn->mnemonic) == 0) |
| 4527 | { |
| 4528 | if (insn->opcount >= insn->tm->minops |
| 4529 | && insn->opcount <= insn->tm->maxops |
| 4530 | && operands_match (insn, &insn->operands[0], insn->opcount, |
| 4531 | insn->tm->operand_types, |
| 4532 | insn->tm->minops, insn->tm->maxops)) |
| 4533 | { |
| 4534 | /* SUCCESS! now try some optimizations. */ |
| 4535 | if (optimize_insn (insn)) |
| 4536 | { |
| 4537 | insn->tm = (template *) hash_find (op_hash, |
| 4538 | insn->mnemonic); |
| 4539 | continue; |
| 4540 | } |
| 4541 | |
| 4542 | return 1; |
| 4543 | } |
| 4544 | ++(insn->tm); |
| 4545 | } |
| 4546 | as_bad (_("Unrecognized operand list '%s' for instruction '%s'"), |
| 4547 | line, insn->mnemonic); |
| 4548 | return 0; |
| 4549 | } |
| 4550 | |
| 4551 | /* We set this in start_line_hook, 'cause if we do a line replacement, we |
| 4552 | won't be able to see the next line. */ |
| 4553 | static int parallel_on_next_line_hint = 0; |
| 4554 | |
| 4555 | /* See if this is part of a parallel instruction |
| 4556 | Look for a subsequent line starting with "||". */ |
| 4557 | |
| 4558 | static int |
| 4559 | next_line_shows_parallel (next_line) |
| 4560 | char *next_line; |
| 4561 | { |
| 4562 | /* Look for the second half. */ |
| 4563 | while (ISSPACE (*next_line)) |
| 4564 | ++next_line; |
| 4565 | |
| 4566 | return (next_line[0] == PARALLEL_SEPARATOR |
| 4567 | && next_line[1] == PARALLEL_SEPARATOR); |
| 4568 | } |
| 4569 | |
| 4570 | static int |
| 4571 | tic54x_parse_parallel_insn_firstline (insn, line) |
| 4572 | tic54x_insn *insn; |
| 4573 | char *line; |
| 4574 | { |
| 4575 | insn->tm = (template *) hash_find (parop_hash, insn->mnemonic); |
| 4576 | if (!insn->tm) |
| 4577 | { |
| 4578 | as_bad (_("Unrecognized parallel instruction \"%s\""), |
| 4579 | insn->mnemonic); |
| 4580 | return 0; |
| 4581 | } |
| 4582 | |
| 4583 | while (insn->tm->name && strcasecmp (insn->tm->name, |
| 4584 | insn->mnemonic) == 0) |
| 4585 | { |
| 4586 | insn->opcount = get_operands (insn->operands, line); |
| 4587 | if (insn->opcount < 0) |
| 4588 | return 0; |
| 4589 | if (insn->opcount == 2 |
| 4590 | && operands_match (insn, &insn->operands[0], insn->opcount, |
| 4591 | insn->tm->operand_types, 2, 2)) |
| 4592 | { |
| 4593 | return 1; |
| 4594 | } |
| 4595 | ++(insn->tm); |
| 4596 | } |
| 4597 | /* Didn't find a matching parallel; try for a normal insn. */ |
| 4598 | return 0; |
| 4599 | } |
| 4600 | |
| 4601 | /* Parse the second line of a two-line parallel instruction. */ |
| 4602 | |
| 4603 | static int |
| 4604 | tic54x_parse_parallel_insn_lastline (insn, line) |
| 4605 | tic54x_insn *insn; |
| 4606 | char *line; |
| 4607 | { |
| 4608 | int valid_mnemonic = 0; |
| 4609 | |
| 4610 | insn->paropcount = get_operands (insn->paroperands, line); |
| 4611 | while (insn->tm->name && strcasecmp (insn->tm->name, |
| 4612 | insn->mnemonic) == 0) |
| 4613 | { |
| 4614 | if (strcasecmp (insn->tm->parname, insn->parmnemonic) == 0) |
| 4615 | { |
| 4616 | valid_mnemonic = 1; |
| 4617 | |
| 4618 | if (insn->paropcount >= insn->tm->minops |
| 4619 | && insn->paropcount <= insn->tm->maxops |
| 4620 | && operands_match (insn, insn->paroperands, |
| 4621 | insn->paropcount, |
| 4622 | insn->tm->paroperand_types, |
| 4623 | insn->tm->minops, insn->tm->maxops)) |
| 4624 | return 1; |
| 4625 | } |
| 4626 | ++(insn->tm); |
| 4627 | } |
| 4628 | if (valid_mnemonic) |
| 4629 | as_bad (_("Invalid operand (s) for parallel instruction \"%s\""), |
| 4630 | insn->parmnemonic); |
| 4631 | else |
| 4632 | as_bad (_("Unrecognized parallel instruction combination \"%s || %s\""), |
| 4633 | insn->mnemonic, insn->parmnemonic); |
| 4634 | |
| 4635 | return 0; |
| 4636 | } |
| 4637 | |
| 4638 | /* If quotes found, return copy of line up to closing quote; |
| 4639 | otherwise up until terminator. |
| 4640 | If it's a string, pass as-is; otherwise attempt substitution symbol |
| 4641 | replacement on the value. */ |
| 4642 | |
| 4643 | static char * |
| 4644 | subsym_get_arg (line, terminators, str, nosub) |
| 4645 | char *line; |
| 4646 | char *terminators; |
| 4647 | char **str; |
| 4648 | int nosub; |
| 4649 | { |
| 4650 | char *ptr = line; |
| 4651 | char *endp; |
| 4652 | int is_string = *line == '"'; |
| 4653 | int is_char = ISDIGIT (*line); |
| 4654 | |
| 4655 | if (is_char) |
| 4656 | { |
| 4657 | while (ISDIGIT (*ptr)) |
| 4658 | ++ptr; |
| 4659 | endp = ptr; |
| 4660 | *str = xmalloc (ptr - line + 1); |
| 4661 | strncpy (*str, line, ptr - line); |
| 4662 | (*str)[ptr - line] = 0; |
| 4663 | } |
| 4664 | else if (is_string) |
| 4665 | { |
| 4666 | char *savedp = input_line_pointer; |
| 4667 | int len; |
| 4668 | |
| 4669 | input_line_pointer = ptr; |
| 4670 | *str = demand_copy_C_string (&len); |
| 4671 | endp = input_line_pointer; |
| 4672 | input_line_pointer = savedp; |
| 4673 | |
| 4674 | /* Do forced substitutions if requested. */ |
| 4675 | if (!nosub && **str == ':') |
| 4676 | *str = subsym_substitute (*str, 1); |
| 4677 | } |
| 4678 | else |
| 4679 | { |
| 4680 | char *term = terminators; |
| 4681 | char *value = NULL; |
| 4682 | |
| 4683 | while (*ptr && *ptr != *term) |
| 4684 | { |
| 4685 | if (!*term) |
| 4686 | { |
| 4687 | term = terminators; |
| 4688 | ++ptr; |
| 4689 | } |
| 4690 | else |
| 4691 | ++term; |
| 4692 | } |
| 4693 | endp = ptr; |
| 4694 | *str = xmalloc (ptr - line + 1); |
| 4695 | strncpy (*str, line, ptr - line); |
| 4696 | (*str)[ptr - line] = 0; |
| 4697 | /* Do simple substitution, if available. */ |
| 4698 | if (!nosub && (value = subsym_lookup (*str, macro_level)) != NULL) |
| 4699 | *str = value; |
| 4700 | } |
| 4701 | |
| 4702 | return endp; |
| 4703 | } |
| 4704 | |
| 4705 | /* Replace the given substitution string. |
| 4706 | We start at the innermost macro level, so that existing locals remain local |
| 4707 | Note: we're treating macro args identically to .var's; I don't know if |
| 4708 | that's compatible w/TI's assembler. */ |
| 4709 | |
| 4710 | static void |
| 4711 | subsym_create_or_replace (name, value) |
| 4712 | char *name; |
| 4713 | char *value; |
| 4714 | { |
| 4715 | int i; |
| 4716 | |
| 4717 | for (i = macro_level; i > 0; i--) |
| 4718 | { |
| 4719 | if (hash_find (subsym_hash[i], name)) |
| 4720 | { |
| 4721 | hash_replace (subsym_hash[i], name, value); |
| 4722 | return; |
| 4723 | } |
| 4724 | } |
| 4725 | if (hash_find (subsym_hash[0], name)) |
| 4726 | hash_replace (subsym_hash[0], name, value); |
| 4727 | else |
| 4728 | hash_insert (subsym_hash[0], name, value); |
| 4729 | } |
| 4730 | |
| 4731 | /* Look up the substitution string replacement for the given symbol. |
| 4732 | Start with the innermost macro substituion table given and work |
| 4733 | outwards. */ |
| 4734 | |
| 4735 | static char * |
| 4736 | subsym_lookup (name, nest_level) |
| 4737 | char *name; |
| 4738 | int nest_level; |
| 4739 | { |
| 4740 | char *value = hash_find (subsym_hash[nest_level], name); |
| 4741 | |
| 4742 | if (value || nest_level == 0) |
| 4743 | return value; |
| 4744 | |
| 4745 | return subsym_lookup (name, nest_level - 1); |
| 4746 | } |
| 4747 | |
| 4748 | /* Do substitution-symbol replacement on the given line (recursively). |
| 4749 | return the argument if no substitution was done |
| 4750 | |
| 4751 | Also look for built-in functions ($func (arg)) and local labels. |
| 4752 | |
| 4753 | If FORCED is set, look for forced substitutions of the form ':SYMBOL:'. */ |
| 4754 | |
| 4755 | static char * |
| 4756 | subsym_substitute (line, forced) |
| 4757 | char * line; |
| 4758 | int forced; |
| 4759 | { |
| 4760 | /* For each apparent symbol, see if it's a substitution symbol, and if so, |
| 4761 | replace it in the input. */ |
| 4762 | char *replacement; /* current replacement for LINE. */ |
| 4763 | char *head; /* Start of line. */ |
| 4764 | char *ptr; /* Current examination point. */ |
| 4765 | int changed = 0; /* Did we make a substitution? */ |
| 4766 | int eval_line = 0; /* Is this line a .eval/.asg statement? */ |
| 4767 | int eval_symbol = 0; /* Are we in the middle of the symbol for |
| 4768 | .eval/.asg? */ |
| 4769 | char *eval_end = NULL; |
| 4770 | int recurse = 1; |
| 4771 | int line_conditional = 0; |
| 4772 | char *tmp; |
| 4773 | |
| 4774 | /* Work with a copy of the input line. */ |
| 4775 | replacement = xmalloc (strlen (line) + 1); |
| 4776 | strcpy (replacement, line); |
| 4777 | |
| 4778 | ptr = head = replacement; |
| 4779 | |
| 4780 | /* Flag lines where we might need to replace a single '=' with two; |
| 4781 | GAS uses single '=' to assign macro args values, and possibly other |
| 4782 | places, so limit what we replace. */ |
| 4783 | if (strstr (line, ".if") |
| 4784 | || strstr (line, ".elseif") |
| 4785 | || strstr (line, ".break")) |
| 4786 | line_conditional = 1; |
| 4787 | |
| 4788 | /* Watch out for .eval, so that we avoid doing substitution on the |
| 4789 | symbol being assigned a value. */ |
| 4790 | if (strstr (line, ".eval") || strstr (line, ".asg")) |
| 4791 | eval_line = 1; |
| 4792 | |
| 4793 | /* If it's a macro definition, don't do substitution on the argument |
| 4794 | names. */ |
| 4795 | if (strstr (line, ".macro")) |
| 4796 | return line; |
| 4797 | |
| 4798 | while (!is_end_of_line[(int) *ptr]) |
| 4799 | { |
| 4800 | int current_char = *ptr; |
| 4801 | |
| 4802 | /* Need to update this since LINE may have been modified. */ |
| 4803 | if (eval_line) |
| 4804 | eval_end = strrchr (ptr, ','); |
| 4805 | |
| 4806 | /* Replace triple double quotes with bounding quote/escapes. */ |
| 4807 | if (current_char == '"' && ptr[1] == '"' && ptr[2] == '"') |
| 4808 | { |
| 4809 | ptr[1] = '\\'; |
| 4810 | tmp = strstr (ptr + 2, "\"\"\""); |
| 4811 | if (tmp) |
| 4812 | tmp[0] = '\\'; |
| 4813 | changed = 1; |
| 4814 | } |
| 4815 | |
| 4816 | /* Replace a single '=' with a '=='; |
| 4817 | for compatibility with older code only. */ |
| 4818 | if (line_conditional && current_char == '=') |
| 4819 | { |
| 4820 | if (ptr[1] == '=') |
| 4821 | { |
| 4822 | ptr += 2; |
| 4823 | continue; |
| 4824 | } |
| 4825 | *ptr++ = '\0'; |
| 4826 | tmp = xmalloc (strlen (head) + 2 + strlen (ptr) + 1); |
| 4827 | sprintf (tmp, "%s==%s", head, ptr); |
| 4828 | /* Continue examining after the '=='. */ |
| 4829 | ptr = tmp + strlen (head) + 2; |
| 4830 | free (replacement); |
| 4831 | head = replacement = tmp; |
| 4832 | changed = 1; |
| 4833 | } |
| 4834 | |
| 4835 | /* Flag when we've reached the symbol part of .eval/.asg. */ |
| 4836 | if (eval_line && ptr >= eval_end) |
| 4837 | eval_symbol = 1; |
| 4838 | |
| 4839 | /* For each apparent symbol, see if it's a substitution symbol, and if |
| 4840 | so, replace it in the input. */ |
| 4841 | if ((forced && current_char == ':') |
| 4842 | || (!forced && is_name_beginner (current_char))) |
| 4843 | { |
| 4844 | char *name; /* Symbol to be replaced. */ |
| 4845 | char *savedp = input_line_pointer; |
| 4846 | int c; |
| 4847 | char *value = NULL; |
| 4848 | char *tail; /* Rest of line after symbol. */ |
| 4849 | |
| 4850 | /* Skip the colon. */ |
| 4851 | if (forced) |
| 4852 | ++ptr; |
| 4853 | |
| 4854 | name = input_line_pointer = ptr; |
| 4855 | c = get_symbol_end (); |
| 4856 | /* '?' is not normally part of a symbol, but it IS part of a local |
| 4857 | label. */ |
| 4858 | if (c == '?') |
| 4859 | { |
| 4860 | *input_line_pointer++ = c; |
| 4861 | c = *input_line_pointer; |
| 4862 | *input_line_pointer = '\0'; |
| 4863 | } |
| 4864 | /* Avoid infinite recursion; if a symbol shows up a second time for |
| 4865 | substitution, leave it as is. */ |
| 4866 | if (hash_find (subsym_recurse_hash, name) == NULL) |
| 4867 | value = subsym_lookup (name, macro_level); |
| 4868 | else |
| 4869 | as_warn (_("%s symbol recursion stopped at " |
| 4870 | "second appearance of '%s'"), |
| 4871 | forced ? "Forced substitution" : "Substitution", name); |
| 4872 | ptr = tail = input_line_pointer; |
| 4873 | input_line_pointer = savedp; |
| 4874 | |
| 4875 | /* Check for local labels; replace them with the appropriate |
| 4876 | substitution. */ |
| 4877 | if ((*name == '$' && ISDIGIT (name[1]) && name[2] == '\0') |
| 4878 | || name[strlen (name) - 1] == '?') |
| 4879 | { |
| 4880 | /* Use an existing identifier for that label if, available, or |
| 4881 | create a new, unique identifier. */ |
| 4882 | value = hash_find (local_label_hash[macro_level], name); |
| 4883 | if (value == NULL) |
| 4884 | { |
| 4885 | char digit[11]; |
| 4886 | char *namecopy = strcpy (xmalloc (strlen (name) + 1), name); |
| 4887 | |
| 4888 | value = strcpy (xmalloc (strlen (name) + sizeof (digit) + 1), |
| 4889 | name); |
| 4890 | if (*value != '$') |
| 4891 | value[strlen (value) - 1] = '\0'; |
| 4892 | sprintf (digit, ".%d", local_label_id++); |
| 4893 | strcat (value, digit); |
| 4894 | hash_insert (local_label_hash[macro_level], namecopy, value); |
| 4895 | } |
| 4896 | /* Indicate where to continue looking for substitutions. */ |
| 4897 | ptr = tail; |
| 4898 | } |
| 4899 | /* Check for built-in subsym and math functions. */ |
| 4900 | else if (value != NULL && *name == '$') |
| 4901 | { |
| 4902 | subsym_proc_entry *entry = (subsym_proc_entry *) value; |
| 4903 | math_proc_entry *math_entry = hash_find (math_hash, name); |
| 4904 | char *arg1, *arg2 = NULL; |
| 4905 | |
| 4906 | *ptr = c; |
| 4907 | if (entry == NULL) |
| 4908 | { |
| 4909 | as_bad (_("Unrecognized substitution symbol function")); |
| 4910 | break; |
| 4911 | } |
| 4912 | else if (*ptr != '(') |
| 4913 | { |
| 4914 | as_bad (_("Missing '(' after substitution symbol function")); |
| 4915 | break; |
| 4916 | } |
| 4917 | ++ptr; |
| 4918 | if (math_entry != NULL) |
| 4919 | { |
| 4920 | float arg1, arg2 = 0; |
| 4921 | volatile float fresult; |
| 4922 | |
| 4923 | arg1 = (float) strtod (ptr, &ptr); |
| 4924 | if (math_entry->nargs == 2) |
| 4925 | { |
| 4926 | if (*ptr++ != ',') |
| 4927 | { |
| 4928 | as_bad (_("Expecting second argument")); |
| 4929 | break; |
| 4930 | } |
| 4931 | arg2 = (float) strtod (ptr, &ptr); |
| 4932 | } |
| 4933 | fresult = (*math_entry->proc) (arg1, arg2); |
| 4934 | value = xmalloc (128); |
| 4935 | if (math_entry->int_return) |
| 4936 | sprintf (value, "%d", (int) fresult); |
| 4937 | else |
| 4938 | sprintf (value, "%f", fresult); |
| 4939 | if (*ptr++ != ')') |
| 4940 | { |
| 4941 | as_bad (_("Extra junk in function call, expecting ')'")); |
| 4942 | break; |
| 4943 | } |
| 4944 | /* Don't bother recursing; the replacement isn't a |
| 4945 | symbol. */ |
| 4946 | recurse = 0; |
| 4947 | } |
| 4948 | else |
| 4949 | { |
| 4950 | int val; |
| 4951 | int arg_type[2] = { *ptr == '"' , 0 }; |
| 4952 | int ismember = !strcmp (entry->name, "$ismember"); |
| 4953 | |
| 4954 | /* Parse one or two args, which must be a substitution |
| 4955 | symbol, string or a character-string constant. */ |
| 4956 | /* For all functions, a string or substitution symbol may be |
| 4957 | used, with the following exceptions: |
| 4958 | firstch/lastch: 2nd arg must be character constant |
| 4959 | ismember: both args must be substitution symbols. */ |
| 4960 | ptr = subsym_get_arg (ptr, ",)", &arg1, ismember); |
| 4961 | if (!arg1) |
| 4962 | break; |
| 4963 | if (entry->nargs == 2) |
| 4964 | { |
| 4965 | if (*ptr++ != ',') |
| 4966 | { |
| 4967 | as_bad (_("Function expects two arguments")); |
| 4968 | break; |
| 4969 | } |
| 4970 | /* Character constants are converted to numerics |
| 4971 | by the preprocessor. */ |
| 4972 | arg_type[1] = (ISDIGIT (*ptr)) ? 2 : (*ptr == '"'); |
| 4973 | ptr = subsym_get_arg (ptr, ")", &arg2, ismember); |
| 4974 | } |
| 4975 | /* Args checking. */ |
| 4976 | if ((!strcmp (entry->name, "$firstch") |
| 4977 | || !strcmp (entry->name, "$lastch")) |
| 4978 | && arg_type[1] != 2) |
| 4979 | { |
| 4980 | as_bad (_("Expecting character constant argument")); |
| 4981 | break; |
| 4982 | } |
| 4983 | if (ismember |
| 4984 | && (arg_type[0] != 0 || arg_type[1] != 0)) |
| 4985 | { |
| 4986 | as_bad (_("Both arguments must be substitution symbols")); |
| 4987 | break; |
| 4988 | } |
| 4989 | if (*ptr++ != ')') |
| 4990 | { |
| 4991 | as_bad (_("Extra junk in function call, expecting ')'")); |
| 4992 | break; |
| 4993 | } |
| 4994 | val = (*entry->proc) (arg1, arg2); |
| 4995 | value = xmalloc (64); |
| 4996 | sprintf (value, "%d", val); |
| 4997 | } |
| 4998 | /* Fix things up to replace the entire expression, not just the |
| 4999 | function name. */ |
| 5000 | tail = ptr; |
| 5001 | c = *tail; |
| 5002 | } |
| 5003 | |
| 5004 | if (value != NULL && !eval_symbol) |
| 5005 | { |
| 5006 | /* Replace the symbol with its string replacement and |
| 5007 | continue. Recursively replace VALUE until either no |
| 5008 | substitutions are performed, or a substitution that has been |
| 5009 | previously made is encountered again. |
| 5010 | |
| 5011 | put the symbol into the recursion hash table so we only |
| 5012 | try to replace a symbol once. */ |
| 5013 | if (recurse) |
| 5014 | { |
| 5015 | hash_insert (subsym_recurse_hash, name, name); |
| 5016 | value = subsym_substitute (value, macro_level > 0); |
| 5017 | hash_delete (subsym_recurse_hash, name); |
| 5018 | } |
| 5019 | |
| 5020 | /* Temporarily zero-terminate where the symbol started. */ |
| 5021 | *name = 0; |
| 5022 | if (forced) |
| 5023 | { |
| 5024 | if (c == '(') |
| 5025 | { |
| 5026 | /* Subscripted substitution symbol -- use just the |
| 5027 | indicated portion of the string; the description |
| 5028 | kinda indicates that forced substituion is not |
| 5029 | supposed to be recursive, but I'm not sure. */ |
| 5030 | unsigned beg, len = 1; /* default to a single char */ |
| 5031 | char *newval = strcpy (xmalloc (strlen (value) + 1), |
| 5032 | value); |
| 5033 | |
| 5034 | savedp = input_line_pointer; |
| 5035 | input_line_pointer = tail + 1; |
| 5036 | beg = get_absolute_expression (); |
| 5037 | if (beg < 1) |
| 5038 | { |
| 5039 | as_bad (_("Invalid subscript (use 1 to %d)"), |
| 5040 | strlen (value)); |
| 5041 | break; |
| 5042 | } |
| 5043 | if (*input_line_pointer == ',') |
| 5044 | { |
| 5045 | ++input_line_pointer; |
| 5046 | len = get_absolute_expression (); |
| 5047 | if (beg + len > strlen (value)) |
| 5048 | { |
| 5049 | as_bad (_("Invalid length (use 0 to %d"), |
| 5050 | strlen (value) - beg); |
| 5051 | break; |
| 5052 | } |
| 5053 | } |
| 5054 | newval += beg - 1; |
| 5055 | newval[len] = 0; |
| 5056 | tail = input_line_pointer; |
| 5057 | if (*tail++ != ')') |
| 5058 | { |
| 5059 | as_bad (_("Missing ')' in subscripted substitution " |
| 5060 | "symbol expression")); |
| 5061 | break; |
| 5062 | } |
| 5063 | c = *tail; |
| 5064 | input_line_pointer = savedp; |
| 5065 | |
| 5066 | value = newval; |
| 5067 | } |
| 5068 | name[-1] = 0; |
| 5069 | } |
| 5070 | tmp = xmalloc (strlen (head) + strlen (value) + |
| 5071 | strlen (tail + 1) + 2); |
| 5072 | strcpy (tmp, head); |
| 5073 | strcat (tmp, value); |
| 5074 | /* Make sure forced substitutions are properly terminated. */ |
| 5075 | if (forced) |
| 5076 | { |
| 5077 | if (c != ':') |
| 5078 | { |
| 5079 | as_bad (_("Missing forced substitution terminator ':'")); |
| 5080 | break; |
| 5081 | } |
| 5082 | ++tail; |
| 5083 | #if 0 |
| 5084 | /* Try to replace required whitespace |
| 5085 | eliminated by the preprocessor; technically, a forced |
| 5086 | substitution could come anywhere, even mid-symbol, |
| 5087 | e.g. if x is "0", 'sym:x:end' should result in 'sym0end', |
| 5088 | but 'sym:x: end' should result in 'sym0 end'. |
| 5089 | FIXME -- this should really be fixed in the preprocessor, |
| 5090 | but would require several new states; |
| 5091 | KEEP_WHITE_AROUND_COLON does part of the job, but isn't |
| 5092 | complete. */ |
| 5093 | if ((is_part_of_name (tail[1]) |
| 5094 | && tail[1] != '.' |
| 5095 | && tail[1] != '$') |
| 5096 | || tail[1] == '\0' || tail[1] == ',' || tail[1] == '"') |
| 5097 | ++tail; |
| 5098 | else |
| 5099 | *tail = ' '; |
| 5100 | #endif |
| 5101 | } |
| 5102 | else |
| 5103 | /* Restore the character after the symbol end. */ |
| 5104 | *tail = c; |
| 5105 | strcat (tmp, tail); |
| 5106 | /* Continue examining after the replacement value. */ |
| 5107 | ptr = tmp + strlen (head) + strlen (value); |
| 5108 | free (replacement); |
| 5109 | head = replacement = tmp; |
| 5110 | changed = 1; |
| 5111 | } |
| 5112 | else |
| 5113 | *ptr = c; |
| 5114 | } |
| 5115 | else |
| 5116 | { |
| 5117 | ++ptr; |
| 5118 | } |
| 5119 | } |
| 5120 | |
| 5121 | if (changed) |
| 5122 | return replacement; |
| 5123 | else |
| 5124 | return line; |
| 5125 | } |
| 5126 | |
| 5127 | /* We use this to handle substitution symbols |
| 5128 | hijack input_line_pointer, replacing it with our substituted string. |
| 5129 | |
| 5130 | .sslist should enable listing the line after replacements are made... |
| 5131 | |
| 5132 | returns the new buffer limit. */ |
| 5133 | |
| 5134 | void |
| 5135 | tic54x_start_line_hook () |
| 5136 | { |
| 5137 | char *line, *endp; |
| 5138 | char *replacement = NULL; |
| 5139 | |
| 5140 | /* Work with a copy of the input line, including EOL char. */ |
| 5141 | endp = input_line_pointer; |
| 5142 | while (!is_end_of_line[(int) *endp++]) |
| 5143 | ; |
| 5144 | line = xmalloc (endp - input_line_pointer + 1); |
| 5145 | strncpy (line, input_line_pointer, endp - input_line_pointer + 1); |
| 5146 | line[endp - input_line_pointer] = 0; |
| 5147 | |
| 5148 | /* Scan ahead for parallel insns. */ |
| 5149 | parallel_on_next_line_hint = next_line_shows_parallel (endp + 1); |
| 5150 | |
| 5151 | /* If within a macro, first process forced replacements. */ |
| 5152 | if (macro_level > 0) |
| 5153 | replacement = subsym_substitute (line, 1); |
| 5154 | else |
| 5155 | replacement = line; |
| 5156 | replacement = subsym_substitute (replacement, 0); |
| 5157 | |
| 5158 | if (replacement != line) |
| 5159 | { |
| 5160 | char *tmp = replacement; |
| 5161 | char *comment = strchr (replacement, ';'); |
| 5162 | char endc = replacement[strlen (replacement) - 1]; |
| 5163 | |
| 5164 | /* Clean up the replacement; we'd prefer to have this done by the |
| 5165 | standard preprocessing equipment (maybe do_scrub_chars?) |
| 5166 | but for now, do a quick-and-dirty. */ |
| 5167 | if (comment != NULL) |
| 5168 | { |
| 5169 | comment[0] = endc; |
| 5170 | comment[1] = 0; |
| 5171 | --comment; |
| 5172 | } |
| 5173 | else |
| 5174 | comment = replacement + strlen (replacement) - 1; |
| 5175 | |
| 5176 | /* Trim trailing whitespace. */ |
| 5177 | while (ISSPACE (*comment)) |
| 5178 | { |
| 5179 | comment[0] = endc; |
| 5180 | comment[1] = 0; |
| 5181 | --comment; |
| 5182 | } |
| 5183 | |
| 5184 | /* Compact leading whitespace. */ |
| 5185 | while (ISSPACE (tmp[0]) && ISSPACE (tmp[1])) |
| 5186 | ++tmp; |
| 5187 | |
| 5188 | input_line_pointer = endp; |
| 5189 | input_scrub_insert_line (tmp); |
| 5190 | free (replacement); |
| 5191 | free (line); |
| 5192 | /* Keep track of whether we've done a substitution. */ |
| 5193 | substitution_line = 1; |
| 5194 | } |
| 5195 | else |
| 5196 | { |
| 5197 | /* No change. */ |
| 5198 | free (line); |
| 5199 | substitution_line = 0; |
| 5200 | } |
| 5201 | } |
| 5202 | |
| 5203 | /* This is the guts of the machine-dependent assembler. STR points to a |
| 5204 | machine dependent instruction. This function is supposed to emit |
| 5205 | the frags/bytes it assembles to. */ |
| 5206 | void |
| 5207 | md_assemble (line) |
| 5208 | char *line; |
| 5209 | { |
| 5210 | static int repeat_slot = 0; |
| 5211 | static int delay_slots = 0; /* How many delay slots left to fill? */ |
| 5212 | static int is_parallel = 0; |
| 5213 | static tic54x_insn insn; |
| 5214 | char *lptr; |
| 5215 | char *savedp = input_line_pointer; |
| 5216 | int c; |
| 5217 | |
| 5218 | input_line_pointer = line; |
| 5219 | c = get_symbol_end (); |
| 5220 | |
| 5221 | if (cpu == VNONE) |
| 5222 | cpu = V542; |
| 5223 | if (address_mode_needs_set) |
| 5224 | { |
| 5225 | set_address_mode (amode); |
| 5226 | address_mode_needs_set = 0; |
| 5227 | } |
| 5228 | if (cpu_needs_set) |
| 5229 | { |
| 5230 | set_cpu (cpu); |
| 5231 | cpu_needs_set = 0; |
| 5232 | } |
| 5233 | assembly_begun = 1; |
| 5234 | |
| 5235 | if (is_parallel) |
| 5236 | { |
| 5237 | is_parallel = 0; |
| 5238 | |
| 5239 | strcpy (insn.parmnemonic, line); |
| 5240 | lptr = input_line_pointer; |
| 5241 | *lptr = c; |
| 5242 | input_line_pointer = savedp; |
| 5243 | |
| 5244 | if (tic54x_parse_parallel_insn_lastline (&insn, lptr)) |
| 5245 | { |
| 5246 | int words = build_insn (&insn); |
| 5247 | |
| 5248 | if (delay_slots != 0) |
| 5249 | { |
| 5250 | if (words > delay_slots) |
| 5251 | { |
| 5252 | as_bad (_("Instruction does not fit in available delay " |
| 5253 | "slots (%d-word insn, %d slots left)"), |
| 5254 | words, delay_slots); |
| 5255 | delay_slots = 0; |
| 5256 | return; |
| 5257 | } |
| 5258 | delay_slots -= words; |
| 5259 | } |
| 5260 | } |
| 5261 | return; |
| 5262 | } |
| 5263 | |
| 5264 | memset (&insn, 0, sizeof (insn)); |
| 5265 | strcpy (insn.mnemonic, line); |
| 5266 | lptr = input_line_pointer; |
| 5267 | *lptr = c; |
| 5268 | input_line_pointer = savedp; |
| 5269 | |
| 5270 | /* See if this line is part of a parallel instruction; if so, either this |
| 5271 | line or the next line will have the "||" specifier preceding the |
| 5272 | mnemonic, and we look for it in the parallel insn hash table. */ |
| 5273 | if (strstr (line, "||") != NULL || parallel_on_next_line_hint) |
| 5274 | { |
| 5275 | char *tmp = strstr (line, "||"); |
| 5276 | if (tmp != NULL) |
| 5277 | *tmp = '\0'; |
| 5278 | |
| 5279 | if (tic54x_parse_parallel_insn_firstline (&insn, lptr)) |
| 5280 | { |
| 5281 | is_parallel = 1; |
| 5282 | /* If the parallel part is on the same line, process it now, |
| 5283 | otherwise let the assembler pick up the next line for us. */ |
| 5284 | if (tmp != NULL) |
| 5285 | { |
| 5286 | while (ISSPACE (tmp[2])) |
| 5287 | ++tmp; |
| 5288 | md_assemble (tmp + 2); |
| 5289 | } |
| 5290 | } |
| 5291 | else |
| 5292 | { |
| 5293 | as_bad (_("Unrecognized parallel instruction '%s'"), line); |
| 5294 | } |
| 5295 | return; |
| 5296 | } |
| 5297 | |
| 5298 | if (tic54x_parse_insn (&insn, lptr)) |
| 5299 | { |
| 5300 | int words; |
| 5301 | |
| 5302 | if ((insn.tm->flags & FL_LP) |
| 5303 | && cpu != V545LP && cpu != V546LP) |
| 5304 | { |
| 5305 | as_bad (_("Instruction '%s' requires an LP cpu version"), |
| 5306 | insn.tm->name); |
| 5307 | return; |
| 5308 | } |
| 5309 | if ((insn.tm->flags & FL_FAR) |
| 5310 | && amode != far_mode) |
| 5311 | { |
| 5312 | as_bad (_("Instruction '%s' requires far mode addressing"), |
| 5313 | insn.tm->name); |
| 5314 | return; |
| 5315 | } |
| 5316 | |
| 5317 | words = build_insn (&insn); |
| 5318 | |
| 5319 | /* Is this instruction in a delay slot? */ |
| 5320 | if (delay_slots) |
| 5321 | { |
| 5322 | if (words > delay_slots) |
| 5323 | { |
| 5324 | as_warn (_("Instruction does not fit in available delay " |
| 5325 | "slots (%d-word insn, %d slots left). " |
| 5326 | "Resulting behavior is undefined."), |
| 5327 | words, delay_slots); |
| 5328 | delay_slots = 0; |
| 5329 | return; |
| 5330 | } |
| 5331 | /* Branches in delay slots are not allowed. */ |
| 5332 | if (insn.tm->flags & FL_BMASK) |
| 5333 | { |
| 5334 | as_warn (_("Instructions which cause PC discontinuity are not " |
| 5335 | "allowed in a delay slot. " |
| 5336 | "Resulting behavior is undefined.")); |
| 5337 | } |
| 5338 | delay_slots -= words; |
| 5339 | } |
| 5340 | |
| 5341 | /* Is this instruction the target of a repeat? */ |
| 5342 | if (repeat_slot) |
| 5343 | { |
| 5344 | if (insn.tm->flags & FL_NR) |
| 5345 | as_warn (_("'%s' is not repeatable. " |
| 5346 | "Resulting behavior is undefined."), |
| 5347 | insn.tm->name); |
| 5348 | else if (insn.is_lkaddr) |
| 5349 | as_warn (_("Instructions using long offset modifiers or absolute " |
| 5350 | "addresses are not repeatable. " |
| 5351 | "Resulting behavior is undefined.")); |
| 5352 | repeat_slot = 0; |
| 5353 | } |
| 5354 | |
| 5355 | /* Make sure we check the target of a repeat instruction. */ |
| 5356 | if (insn.tm->flags & B_REPEAT) |
| 5357 | { |
| 5358 | repeat_slot = 1; |
| 5359 | /* FIXME -- warn if repeat_slot == 1 at EOF. */ |
| 5360 | } |
| 5361 | /* Make sure we check our delay slots for validity. */ |
| 5362 | if (insn.tm->flags & FL_DELAY) |
| 5363 | { |
| 5364 | delay_slots = 2; |
| 5365 | /* FIXME -- warn if delay_slots != 0 at EOF. */ |
| 5366 | } |
| 5367 | } |
| 5368 | } |
| 5369 | |
| 5370 | /* Do a final adjustment on the symbol table; in this case, make sure we have |
| 5371 | a ".file" symbol. */ |
| 5372 | |
| 5373 | void |
| 5374 | tic54x_adjust_symtab () |
| 5375 | { |
| 5376 | if (symbol_rootP == NULL |
| 5377 | || S_GET_STORAGE_CLASS (symbol_rootP) != C_FILE) |
| 5378 | { |
| 5379 | char *filename; |
| 5380 | unsigned lineno; |
| 5381 | as_where (&filename, &lineno); |
| 5382 | c_dot_file_symbol (filename); |
| 5383 | } |
| 5384 | } |
| 5385 | |
| 5386 | /* In order to get gas to ignore any | chars at the start of a line, |
| 5387 | this function returns true if a | is found in a line. |
| 5388 | This lets us process parallel instructions, which span two lines. */ |
| 5389 | |
| 5390 | int |
| 5391 | tic54x_unrecognized_line (int c) |
| 5392 | { |
| 5393 | return c == PARALLEL_SEPARATOR; |
| 5394 | } |
| 5395 | |
| 5396 | /* Watch for local labels of the form $[0-9] and [_a-zA-Z][_a-zA-Z0-9]*? |
| 5397 | Encode their names so that only we see them and can map them to the |
| 5398 | appropriate places. |
| 5399 | FIXME -- obviously this isn't done yet. These locals still show up in the |
| 5400 | symbol table. */ |
| 5401 | void |
| 5402 | tic54x_define_label (sym) |
| 5403 | symbolS *sym; |
| 5404 | { |
| 5405 | #if 0 |
| 5406 | static int local_label_count = 0; |
| 5407 | const char *name = S_GET_NAME (sym); |
| 5408 | #endif |
| 5409 | |
| 5410 | /* Just in case we need this later; note that this is not necessarily the |
| 5411 | same thing as line_label... |
| 5412 | When aligning or assigning labels to fields, sometimes the label is |
| 5413 | assigned other than the address at which the label appears. |
| 5414 | FIXME -- is this really needed? I think all the proper label assignment |
| 5415 | is done in tic54x_cons. */ |
| 5416 | last_label_seen = sym; |
| 5417 | } |
| 5418 | |
| 5419 | /* Try to parse something that normal parsing failed at. */ |
| 5420 | |
| 5421 | symbolS * |
| 5422 | tic54x_undefined_symbol (name) |
| 5423 | char *name; |
| 5424 | { |
| 5425 | symbol *sym; |
| 5426 | |
| 5427 | /* Not sure how to handle predefined symbols. */ |
| 5428 | if ((sym = (symbol *) hash_find (cc_hash, name)) != NULL || |
| 5429 | (sym = (symbol *) hash_find (cc2_hash, name)) != NULL || |
| 5430 | (sym = (symbol *) hash_find (cc3_hash, name)) != NULL || |
| 5431 | (sym = (symbol *) hash_find (misc_symbol_hash, name)) != NULL || |
| 5432 | (sym = (symbol *) hash_find (sbit_hash, name)) != NULL) |
| 5433 | { |
| 5434 | return symbol_new (name, reg_section, |
| 5435 | (valueT) sym->value, |
| 5436 | &zero_address_frag); |
| 5437 | } |
| 5438 | |
| 5439 | if ((sym = (symbol *) hash_find (reg_hash, name)) != NULL || |
| 5440 | (sym = (symbol *) hash_find (mmreg_hash, name)) != NULL || |
| 5441 | !strcasecmp (name, "a") || !strcasecmp (name, "b")) |
| 5442 | { |
| 5443 | return symbol_new (name, reg_section, |
| 5444 | (valueT) sym ? sym->value : 0, |
| 5445 | &zero_address_frag); |
| 5446 | } |
| 5447 | |
| 5448 | return NULL; |
| 5449 | } |
| 5450 | |
| 5451 | /* Parse a name in an expression before the expression parser takes a stab at |
| 5452 | it. */ |
| 5453 | |
| 5454 | int |
| 5455 | tic54x_parse_name (name, exp) |
| 5456 | char *name ATTRIBUTE_UNUSED; |
| 5457 | expressionS *exp ATTRIBUTE_UNUSED; |
| 5458 | { |
| 5459 | #if 0 |
| 5460 | symbol *sym = (symbol *) hash_find (mmreg_hash, name); |
| 5461 | |
| 5462 | /* If it's a MMREG, replace it with its constant value. */ |
| 5463 | if (sym) |
| 5464 | { |
| 5465 | exp->X_op = O_constant; |
| 5466 | exp->X_add_number = sym->value; |
| 5467 | return 1; |
| 5468 | } |
| 5469 | #endif |
| 5470 | return 0; |
| 5471 | } |
| 5472 | |
| 5473 | char * |
| 5474 | md_atof (type, literalP, sizeP) |
| 5475 | int type; |
| 5476 | char *literalP; |
| 5477 | int *sizeP; |
| 5478 | { |
| 5479 | #define MAX_LITTLENUMS 2 |
| 5480 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; |
| 5481 | LITTLENUM_TYPE *word; |
| 5482 | /* Only one precision on the c54x. */ |
| 5483 | int prec = 2; |
| 5484 | char *t = atof_ieee (input_line_pointer, type, words); |
| 5485 | if (t) |
| 5486 | input_line_pointer = t; |
| 5487 | *sizeP = 4; |
| 5488 | |
| 5489 | /* Target data is little-endian, but floats are stored |
| 5490 | big-"word"ian. ugh. */ |
| 5491 | for (word = words; prec--;) |
| 5492 | { |
| 5493 | md_number_to_chars (literalP, (long) (*word++), sizeof (LITTLENUM_TYPE)); |
| 5494 | literalP += sizeof (LITTLENUM_TYPE); |
| 5495 | } |
| 5496 | |
| 5497 | return 0; |
| 5498 | } |
| 5499 | |
| 5500 | arelent * |
| 5501 | tc_gen_reloc (section, fixP) |
| 5502 | asection *section; |
| 5503 | fixS *fixP; |
| 5504 | { |
| 5505 | arelent *rel; |
| 5506 | bfd_reloc_code_real_type code = fixP->fx_r_type; |
| 5507 | asymbol *sym = symbol_get_bfdsym (fixP->fx_addsy); |
| 5508 | |
| 5509 | rel = (arelent *) xmalloc (sizeof (arelent)); |
| 5510 | rel->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
| 5511 | *rel->sym_ptr_ptr = sym; |
| 5512 | /* We assume that all rel->address are host byte offsets. */ |
| 5513 | rel->address = fixP->fx_frag->fr_address + fixP->fx_where; |
| 5514 | rel->address /= OCTETS_PER_BYTE; |
| 5515 | rel->howto = bfd_reloc_type_lookup (stdoutput, code); |
| 5516 | if (!strcmp (sym->name, section->name)) |
| 5517 | rel->howto += HOWTO_BANK; |
| 5518 | |
| 5519 | if (!rel->howto) |
| 5520 | { |
| 5521 | const char *name = S_GET_NAME (fixP->fx_addsy); |
| 5522 | if (name == NULL) |
| 5523 | name = "<unknown>"; |
| 5524 | as_fatal ("Cannot generate relocation type for symbol %s, code %s", |
| 5525 | name, bfd_get_reloc_code_name (code)); |
| 5526 | return NULL; |
| 5527 | } |
| 5528 | return rel; |
| 5529 | } |
| 5530 | |
| 5531 | /* Handle cons expressions. */ |
| 5532 | |
| 5533 | void |
| 5534 | tic54x_cons_fix_new (frag, where, octets, exp) |
| 5535 | fragS *frag; |
| 5536 | int where; |
| 5537 | int octets; |
| 5538 | expressionS *exp; |
| 5539 | { |
| 5540 | bfd_reloc_code_real_type r; |
| 5541 | |
| 5542 | switch (octets) |
| 5543 | { |
| 5544 | default: |
| 5545 | as_bad (_("Unsupported relocation size %d"), octets); |
| 5546 | r = BFD_RELOC_TIC54X_16_OF_23; |
| 5547 | break; |
| 5548 | case 2: |
| 5549 | r = BFD_RELOC_TIC54X_16_OF_23; |
| 5550 | break; |
| 5551 | case 4: |
| 5552 | /* TI assembler always uses this, regardless of addressing mode. */ |
| 5553 | if (emitting_long) |
| 5554 | r = BFD_RELOC_TIC54X_23; |
| 5555 | else |
| 5556 | /* We never want to directly generate this; this is provided for |
| 5557 | stabs support only. */ |
| 5558 | r = BFD_RELOC_32; |
| 5559 | break; |
| 5560 | } |
| 5561 | fix_new_exp (frag, where, octets, exp, 0, r); |
| 5562 | } |
| 5563 | |
| 5564 | /* Attempt to simplify or even eliminate a fixup. |
| 5565 | To indicate that a fixup has been eliminated, set fixP->fx_done. |
| 5566 | |
| 5567 | If fixp->fx_addsy is non-NULL, we'll have to generate a reloc entry. */ |
| 5568 | |
| 5569 | void |
| 5570 | md_apply_fix3 (fixP, valP, seg) |
| 5571 | fixS *fixP; |
| 5572 | valueT * valP; |
| 5573 | segT seg ATTRIBUTE_UNUSED; |
| 5574 | { |
| 5575 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
| 5576 | valueT val = * valP; |
| 5577 | |
| 5578 | switch (fixP->fx_r_type) |
| 5579 | { |
| 5580 | default: |
| 5581 | as_fatal ("Bad relocation type: 0x%02x", fixP->fx_r_type); |
| 5582 | return; |
| 5583 | case BFD_RELOC_TIC54X_MS7_OF_23: |
| 5584 | val = (val >> 16) & 0x7F; |
| 5585 | /* Fall through. */ |
| 5586 | case BFD_RELOC_TIC54X_16_OF_23: |
| 5587 | case BFD_RELOC_16: |
| 5588 | bfd_put_16 (stdoutput, val, buf); |
| 5589 | /* Indicate what we're actually writing, so that we don't get warnings |
| 5590 | about exceeding available space. */ |
| 5591 | *valP = val & 0xFFFF; |
| 5592 | break; |
| 5593 | case BFD_RELOC_TIC54X_PARTLS7: |
| 5594 | bfd_put_16 (stdoutput, |
| 5595 | (bfd_get_16 (stdoutput, buf) & 0xFF80) | (val & 0x7F), |
| 5596 | buf); |
| 5597 | /* Indicate what we're actually writing, so that we don't get warnings |
| 5598 | about exceeding available space. */ |
| 5599 | *valP = val & 0x7F; |
| 5600 | break; |
| 5601 | case BFD_RELOC_TIC54X_PARTMS9: |
| 5602 | /* TI assembler doesn't shift its encoding for relocatable files, and is |
| 5603 | thus incompatible with this implementation's relocatable files. */ |
| 5604 | bfd_put_16 (stdoutput, |
| 5605 | (bfd_get_16 (stdoutput, buf) & 0xFE00) | (val >> 7), |
| 5606 | buf); |
| 5607 | break; |
| 5608 | case BFD_RELOC_32: |
| 5609 | case BFD_RELOC_TIC54X_23: |
| 5610 | bfd_put_32 (stdoutput, |
| 5611 | (bfd_get_32 (stdoutput, buf) & 0xFF800000) | val, |
| 5612 | buf); |
| 5613 | break; |
| 5614 | } |
| 5615 | |
| 5616 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) |
| 5617 | fixP->fx_done = 1; |
| 5618 | } |
| 5619 | |
| 5620 | /* This is our chance to record section alignment |
| 5621 | don't need to do anything here, since BFD does the proper encoding. */ |
| 5622 | |
| 5623 | valueT |
| 5624 | md_section_align (segment, section_size) |
| 5625 | segT segment ATTRIBUTE_UNUSED; |
| 5626 | valueT section_size; |
| 5627 | { |
| 5628 | return section_size; |
| 5629 | } |
| 5630 | |
| 5631 | long |
| 5632 | md_pcrel_from (fixP) |
| 5633 | fixS *fixP ATTRIBUTE_UNUSED; |
| 5634 | { |
| 5635 | return 0; |
| 5636 | } |
| 5637 | |
| 5638 | #if defined OBJ_COFF |
| 5639 | |
| 5640 | short |
| 5641 | tc_coff_fix2rtype (fixP) |
| 5642 | fixS *fixP; |
| 5643 | { |
| 5644 | return (fixP->fx_r_type); |
| 5645 | } |
| 5646 | |
| 5647 | #endif /* OBJ_COFF */ |
| 5648 | |
| 5649 | /* Mostly little-endian, but longwords (4 octets) get MS word stored |
| 5650 | first. */ |
| 5651 | |
| 5652 | void |
| 5653 | tic54x_number_to_chars (buf, val, n) |
| 5654 | char *buf; |
| 5655 | valueT val; |
| 5656 | int n; |
| 5657 | { |
| 5658 | if (n != 4) |
| 5659 | number_to_chars_littleendian (buf, val, n); |
| 5660 | else |
| 5661 | { |
| 5662 | number_to_chars_littleendian (buf , val >> 16 , 2); |
| 5663 | number_to_chars_littleendian (buf + 2, val & 0xFFFF, 2); |
| 5664 | } |
| 5665 | } |
| 5666 | |
| 5667 | int |
| 5668 | tic54x_estimate_size_before_relax (frag, seg) |
| 5669 | fragS *frag ATTRIBUTE_UNUSED; |
| 5670 | segT seg ATTRIBUTE_UNUSED; |
| 5671 | { |
| 5672 | return 0; |
| 5673 | } |
| 5674 | |
| 5675 | /* We use this to handle bit allocations which we couldn't handle before due |
| 5676 | to symbols being in different frags. return number of octets added. */ |
| 5677 | |
| 5678 | int |
| 5679 | tic54x_relax_frag (frag, stretch) |
| 5680 | fragS *frag; |
| 5681 | long stretch ATTRIBUTE_UNUSED; |
| 5682 | { |
| 5683 | symbolS *sym = frag->fr_symbol; |
| 5684 | int growth = 0; |
| 5685 | int i; |
| 5686 | |
| 5687 | if (sym != NULL) |
| 5688 | { |
| 5689 | struct bit_info *bi = (struct bit_info *) frag->fr_opcode; |
| 5690 | int bit_offset = frag_bit_offset (frag_prev (frag, bi->seg), bi->seg); |
| 5691 | int size = S_GET_VALUE (sym); |
| 5692 | fragS *prev_frag = bit_offset_frag (frag_prev (frag, bi->seg), bi->seg); |
| 5693 | int available = 16 - bit_offset; |
| 5694 | |
| 5695 | if (symbol_get_frag (sym) != &zero_address_frag |
| 5696 | || S_IS_COMMON (sym) |
| 5697 | || !S_IS_DEFINED (sym)) |
| 5698 | as_bad_where (frag->fr_file, frag->fr_line, |
| 5699 | _("non-absolute value used with .space/.bes")); |
| 5700 | |
| 5701 | if (size < 0) |
| 5702 | { |
| 5703 | as_warn (_("negative value ignored in %s"), |
| 5704 | bi->type == TYPE_SPACE ? ".space" : |
| 5705 | bi->type == TYPE_BES ? ".bes" : ".field"); |
| 5706 | growth = 0; |
| 5707 | frag->tc_frag_data = frag->fr_fix = 0; |
| 5708 | return 0; |
| 5709 | } |
| 5710 | |
| 5711 | if (bi->type == TYPE_FIELD) |
| 5712 | { |
| 5713 | /* Bit fields of 16 or larger will have already been handled. */ |
| 5714 | if (bit_offset != 0 && available >= size) |
| 5715 | { |
| 5716 | char *p = prev_frag->fr_literal; |
| 5717 | |
| 5718 | valueT value = bi->value; |
| 5719 | value <<= available - size; |
| 5720 | value |= ((unsigned short) p[1] << 8) | p[0]; |
| 5721 | md_number_to_chars (p, value, 2); |
| 5722 | if ((prev_frag->tc_frag_data += size) == 16) |
| 5723 | prev_frag->tc_frag_data = 0; |
| 5724 | if (bi->sym) |
| 5725 | symbol_set_frag (bi->sym, prev_frag); |
| 5726 | /* This frag is no longer used. */ |
| 5727 | growth = -frag->fr_fix; |
| 5728 | frag->fr_fix = 0; |
| 5729 | frag->tc_frag_data = 0; |
| 5730 | } |
| 5731 | else |
| 5732 | { |
| 5733 | char *p = frag->fr_literal; |
| 5734 | |
| 5735 | valueT value = bi->value << (16 - size); |
| 5736 | md_number_to_chars (p, value, 2); |
| 5737 | if ((frag->tc_frag_data = size) == 16) |
| 5738 | frag->tc_frag_data = 0; |
| 5739 | growth = 0; |
| 5740 | } |
| 5741 | } |
| 5742 | else |
| 5743 | { |
| 5744 | if (bit_offset != 0 && bit_offset < 16) |
| 5745 | { |
| 5746 | if (available >= size) |
| 5747 | { |
| 5748 | if ((prev_frag->tc_frag_data += size) == 16) |
| 5749 | prev_frag->tc_frag_data = 0; |
| 5750 | if (bi->sym) |
| 5751 | symbol_set_frag (bi->sym, prev_frag); |
| 5752 | /* This frag is no longer used. */ |
| 5753 | growth = -frag->fr_fix; |
| 5754 | frag->fr_fix = 0; |
| 5755 | frag->tc_frag_data = 0; |
| 5756 | goto getout; |
| 5757 | } |
| 5758 | if (bi->type == TYPE_SPACE && bi->sym) |
| 5759 | symbol_set_frag (bi->sym, prev_frag); |
| 5760 | size -= available; |
| 5761 | } |
| 5762 | growth = (size + 15) / 16 * OCTETS_PER_BYTE - frag->fr_fix; |
| 5763 | for (i = 0; i < growth; i++) |
| 5764 | frag->fr_literal[i] = 0; |
| 5765 | frag->fr_fix = growth; |
| 5766 | frag->tc_frag_data = size % 16; |
| 5767 | /* Make sure any BES label points to the LAST word allocated. */ |
| 5768 | if (bi->type == TYPE_BES && bi->sym) |
| 5769 | S_SET_VALUE (bi->sym, frag->fr_fix / OCTETS_PER_BYTE - 1); |
| 5770 | } |
| 5771 | getout: |
| 5772 | frag->fr_symbol = 0; |
| 5773 | frag->fr_opcode = 0; |
| 5774 | free ((void *) bi); |
| 5775 | } |
| 5776 | return growth; |
| 5777 | } |
| 5778 | |
| 5779 | void |
| 5780 | tic54x_convert_frag (abfd, seg, frag) |
| 5781 | bfd *abfd ATTRIBUTE_UNUSED; |
| 5782 | segT seg ATTRIBUTE_UNUSED; |
| 5783 | fragS *frag; |
| 5784 | { |
| 5785 | /* Offset is in bytes. */ |
| 5786 | frag->fr_offset = (frag->fr_next->fr_address |
| 5787 | - frag->fr_address |
| 5788 | - frag->fr_fix) / frag->fr_var; |
| 5789 | if (frag->fr_offset < 0) |
| 5790 | { |
| 5791 | as_bad_where (frag->fr_file, frag->fr_line, |
| 5792 | _("attempt to .space/.bes backwards? (%ld)"), |
| 5793 | (long) frag->fr_offset); |
| 5794 | } |
| 5795 | frag->fr_type = rs_space; |
| 5796 | } |
| 5797 | |
| 5798 | /* We need to avoid having labels defined for certain directives/pseudo-ops |
| 5799 | since once the label is defined, it's in the symbol table for good. TI |
| 5800 | syntax puts the symbol *before* the pseudo (which is kinda like MRI syntax, |
| 5801 | I guess, except I've never seen a definition of MRI syntax). |
| 5802 | |
| 5803 | C is the character that used to be at *REST, which points to the end of the |
| 5804 | label. |
| 5805 | |
| 5806 | Don't allow labels to start with '.' */ |
| 5807 | |
| 5808 | int |
| 5809 | tic54x_start_label (c, rest) |
| 5810 | int c; |
| 5811 | char *rest; |
| 5812 | { |
| 5813 | /* If within .struct/.union, no auto line labels, please. */ |
| 5814 | if (current_stag != NULL) |
| 5815 | return 0; |
| 5816 | |
| 5817 | /* Disallow labels starting with "." */ |
| 5818 | if (c != ':') |
| 5819 | { |
| 5820 | char *label = rest; |
| 5821 | |
| 5822 | while (!is_end_of_line[(int) label[-1]]) |
| 5823 | --label; |
| 5824 | if (*label == '.') |
| 5825 | { |
| 5826 | as_bad (_("Invalid label '%s'"), label); |
| 5827 | return 0; |
| 5828 | } |
| 5829 | } |
| 5830 | |
| 5831 | if (is_end_of_line[(int) c]) |
| 5832 | return 1; |
| 5833 | |
| 5834 | if (ISSPACE (c)) |
| 5835 | while (ISSPACE (c = *++rest)) |
| 5836 | ; |
| 5837 | if (c == '.') |
| 5838 | { |
| 5839 | /* Don't let colon () define a label for any of these... */ |
| 5840 | return (strncasecmp (rest, ".tag", 4) != 0 || !ISSPACE (rest[4])) |
| 5841 | && (strncasecmp (rest, ".struct", 7) != 0 || !ISSPACE (rest[7])) |
| 5842 | && (strncasecmp (rest, ".union", 6) != 0 || !ISSPACE (rest[6])) |
| 5843 | && (strncasecmp (rest, ".macro", 6) != 0 || !ISSPACE (rest[6])) |
| 5844 | && (strncasecmp (rest, ".set", 4) != 0 || !ISSPACE (rest[4])) |
| 5845 | && (strncasecmp (rest, ".equ", 4) != 0 || !ISSPACE (rest[4])); |
| 5846 | } |
| 5847 | |
| 5848 | return 1; |
| 5849 | } |