| 1 | /* tc-xtensa.h -- Header file for tc-xtensa.c. |
| 2 | Copyright (C) 2003-2020 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GAS, the GNU Assembler. |
| 5 | |
| 6 | GAS is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3, or (at your option) |
| 9 | any later version. |
| 10 | |
| 11 | GAS is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
| 19 | 02110-1301, USA. */ |
| 20 | |
| 21 | #ifndef TC_XTENSA |
| 22 | #define TC_XTENSA 1 |
| 23 | |
| 24 | struct fix; |
| 25 | |
| 26 | #ifndef OBJ_ELF |
| 27 | #error Xtensa support requires ELF object format |
| 28 | #endif |
| 29 | |
| 30 | #include "xtensa-isa.h" |
| 31 | #include "xtensa-config.h" |
| 32 | |
| 33 | #define TARGET_BYTES_BIG_ENDIAN 0 |
| 34 | |
| 35 | |
| 36 | /* Maximum number of opcode slots in a VLIW instruction. */ |
| 37 | #define MAX_SLOTS 15 |
| 38 | |
| 39 | |
| 40 | /* For all xtensa relax states except RELAX_DESIRE_ALIGN and |
| 41 | RELAX_DESIRE_ALIGN_IF_TARGET, the amount a frag might grow is stored |
| 42 | in the fr_var field. For the two exceptions, fr_var is a float value |
| 43 | that records the frequency with which the following instruction is |
| 44 | executed as a branch target. The aligner uses this information to |
| 45 | tell which targets are most important to be aligned. */ |
| 46 | |
| 47 | enum xtensa_relax_statesE |
| 48 | { |
| 49 | RELAX_XTENSA_NONE, |
| 50 | |
| 51 | RELAX_ALIGN_NEXT_OPCODE, |
| 52 | /* Use the first opcode of the next fragment to determine the |
| 53 | alignment requirements. This is ONLY used for LOOPs currently. */ |
| 54 | |
| 55 | RELAX_CHECK_ALIGN_NEXT_OPCODE, |
| 56 | /* The next non-empty frag contains a loop instruction. Check to see |
| 57 | if it is correctly aligned, but do not align it. */ |
| 58 | |
| 59 | RELAX_DESIRE_ALIGN_IF_TARGET, |
| 60 | /* These are placed in front of labels and converted to either |
| 61 | RELAX_DESIRE_ALIGN / RELAX_LOOP_END or rs_fill of 0 before |
| 62 | relaxation begins. */ |
| 63 | |
| 64 | RELAX_ADD_NOP_IF_A0_B_RETW, |
| 65 | /* These are placed in front of conditional branches. Before |
| 66 | relaxation begins, they are turned into either NOPs for branches |
| 67 | immediately followed by RETW or RETW.N or rs_fills of 0. This is |
| 68 | used to avoid a hardware bug in some early versions of the |
| 69 | processor. */ |
| 70 | |
| 71 | RELAX_ADD_NOP_IF_PRE_LOOP_END, |
| 72 | /* These are placed after JX instructions. Before relaxation begins, |
| 73 | they are turned into either NOPs, if the JX is one instruction |
| 74 | before a loop end label, or rs_fills of 0. This is used to avoid a |
| 75 | hardware interlock issue prior to Xtensa version T1040. */ |
| 76 | |
| 77 | RELAX_ADD_NOP_IF_SHORT_LOOP, |
| 78 | /* These are placed after LOOP instructions and turned into NOPs when: |
| 79 | (1) there are less than 3 instructions in the loop; we place 2 of |
| 80 | these in a row to add up to 2 NOPS in short loops; or (2) the |
| 81 | instructions in the loop do not include a branch or jump. |
| 82 | Otherwise they are turned into rs_fills of 0 before relaxation |
| 83 | begins. This is used to avoid hardware bug PR3830. */ |
| 84 | |
| 85 | RELAX_ADD_NOP_IF_CLOSE_LOOP_END, |
| 86 | /* These are placed after LOOP instructions and turned into NOPs if |
| 87 | there are less than 12 bytes to the end of some other loop's end. |
| 88 | Otherwise they are turned into rs_fills of 0 before relaxation |
| 89 | begins. This is used to avoid hardware bug PR3830. */ |
| 90 | |
| 91 | RELAX_DESIRE_ALIGN, |
| 92 | /* The next fragment would like its first instruction to NOT cross an |
| 93 | instruction fetch boundary. */ |
| 94 | |
| 95 | RELAX_MAYBE_DESIRE_ALIGN, |
| 96 | /* The next fragment might like its first instruction to NOT cross an |
| 97 | instruction fetch boundary. These are placed after a branch that |
| 98 | might be relaxed. If the branch is relaxed, then this frag will be |
| 99 | a branch target and this frag will be changed to RELAX_DESIRE_ALIGN |
| 100 | frag. */ |
| 101 | |
| 102 | RELAX_LOOP_END, |
| 103 | /* This will be turned into a NOP or NOP.N if the previous instruction |
| 104 | is expanded to negate a loop. */ |
| 105 | |
| 106 | RELAX_LOOP_END_ADD_NOP, |
| 107 | /* When the code density option is available, this will generate a |
| 108 | NOP.N marked RELAX_NARROW. Otherwise, it will create an rs_fill |
| 109 | fragment with a NOP in it. Once a frag has been converted to |
| 110 | RELAX_LOOP_END_ADD_NOP, it should never be changed back to |
| 111 | RELAX_LOOP_END. */ |
| 112 | |
| 113 | RELAX_LITERAL, |
| 114 | /* Another fragment could generate an expansion here but has not yet. */ |
| 115 | |
| 116 | RELAX_LITERAL_NR, |
| 117 | /* Expansion has been generated by an instruction that generates a |
| 118 | literal. However, the stretch has NOT been reported yet in this |
| 119 | fragment. */ |
| 120 | |
| 121 | RELAX_LITERAL_FINAL, |
| 122 | /* Expansion has been generated by an instruction that generates a |
| 123 | literal. */ |
| 124 | |
| 125 | RELAX_LITERAL_POOL_BEGIN, |
| 126 | RELAX_LITERAL_POOL_END, |
| 127 | RELAX_LITERAL_POOL_CANDIDATE_BEGIN, |
| 128 | /* Technically these are not relaxations at all but mark a location |
| 129 | to store literals later. Note that fr_var stores the frchain for |
| 130 | BEGIN frags and fr_var stores now_seg for END frags. */ |
| 131 | |
| 132 | RELAX_NARROW, |
| 133 | /* The last instruction in this fragment (at->fr_opcode) can be |
| 134 | freely replaced with a single wider instruction if a future |
| 135 | alignment desires or needs it. */ |
| 136 | |
| 137 | RELAX_IMMED, |
| 138 | /* The last instruction in this fragment (at->fr_opcode) contains |
| 139 | an immediate or symbol. If the value does not fit, relax the |
| 140 | opcode using expansions from the relax table. */ |
| 141 | |
| 142 | RELAX_IMMED_STEP1, |
| 143 | /* The last instruction in this fragment (at->fr_opcode) contains a |
| 144 | literal. It has already been expanded 1 step. */ |
| 145 | |
| 146 | RELAX_IMMED_STEP2, |
| 147 | /* The last instruction in this fragment (at->fr_opcode) contains a |
| 148 | literal. It has already been expanded 2 steps. */ |
| 149 | |
| 150 | RELAX_IMMED_STEP3, |
| 151 | /* The last instruction in this fragment (at->fr_opcode) contains a |
| 152 | literal. It has already been expanded 3 steps. */ |
| 153 | |
| 154 | RELAX_SLOTS, |
| 155 | /* There are instructions within the last VLIW instruction that need |
| 156 | relaxation. Find the relaxation based on the slot info in |
| 157 | xtensa_frag_type. Relaxations that deal with particular opcodes |
| 158 | are slot-based (e.g., converting a MOVI to an L32R). Relaxations |
| 159 | that deal with entire instructions, such as alignment, are not |
| 160 | slot-based. */ |
| 161 | |
| 162 | RELAX_FILL_NOP, |
| 163 | /* This marks the location of a pipeline stall. We can fill these guys |
| 164 | in for alignment of any size. */ |
| 165 | |
| 166 | RELAX_UNREACHABLE, |
| 167 | /* This marks the location as unreachable. The assembler may widen or |
| 168 | narrow this area to meet alignment requirements of nearby |
| 169 | instructions. */ |
| 170 | |
| 171 | RELAX_MAYBE_UNREACHABLE, |
| 172 | /* This marks the location as possibly unreachable. These are placed |
| 173 | after a branch that may be relaxed into a branch and jump. If the |
| 174 | branch is relaxed, then this frag will be converted to a |
| 175 | RELAX_UNREACHABLE frag. */ |
| 176 | |
| 177 | RELAX_ORG, |
| 178 | /* This marks the location as having previously been an rs_org frag. |
| 179 | rs_org frags are converted to fill-zero frags immediately after |
| 180 | relaxation. However, we need to remember where they were so we can |
| 181 | prevent the linker from changing the size of any frag between the |
| 182 | section start and the org frag. */ |
| 183 | |
| 184 | RELAX_TRAMPOLINE, |
| 185 | /* Every few thousand frags, we insert one of these, just in case we may |
| 186 | need some space for a trampoline (jump to a jump) because the function |
| 187 | has gotten too big. If not needed, it disappears. */ |
| 188 | |
| 189 | RELAX_NONE |
| 190 | }; |
| 191 | |
| 192 | /* This is used as a stopper to bound the number of steps that |
| 193 | can be taken. */ |
| 194 | #define RELAX_IMMED_MAXSTEPS (RELAX_IMMED_STEP3 - RELAX_IMMED) |
| 195 | |
| 196 | struct xtensa_frag_type |
| 197 | { |
| 198 | /* Info about the current state of assembly, e.g., transform, |
| 199 | absolute_literals, etc. These need to be passed to the backend and |
| 200 | then to the object file. |
| 201 | |
| 202 | When is_assembly_state_set is false, the frag inherits some of the |
| 203 | state settings from the previous frag in this segment. Because it |
| 204 | is not possible to intercept all fragment closures (frag_more and |
| 205 | frag_append_1_char can close a frag), we use a pass after initial |
| 206 | assembly to fill in the assembly states. */ |
| 207 | |
| 208 | unsigned int is_assembly_state_set : 1; |
| 209 | unsigned int is_no_density : 1; |
| 210 | unsigned int is_no_transform : 1; |
| 211 | unsigned int use_longcalls : 1; |
| 212 | unsigned int use_absolute_literals : 1; |
| 213 | |
| 214 | /* Inhibits relaxation of machine-dependent alignment frags the |
| 215 | first time through a relaxation.... */ |
| 216 | unsigned int relax_seen : 1; |
| 217 | |
| 218 | /* Information that is needed in the object file and set when known. */ |
| 219 | unsigned int is_literal : 1; |
| 220 | unsigned int is_loop_target : 1; |
| 221 | unsigned int is_branch_target : 1; |
| 222 | unsigned int is_insn : 1; |
| 223 | unsigned int is_unreachable : 1; |
| 224 | |
| 225 | unsigned int is_specific_opcode : 1; /* also implies no_transform */ |
| 226 | |
| 227 | unsigned int is_align : 1; |
| 228 | unsigned int is_text_align : 1; |
| 229 | unsigned int alignment : 5; |
| 230 | |
| 231 | /* A frag with this bit set is the first in a loop that actually |
| 232 | contains an instruction. */ |
| 233 | unsigned int is_first_loop_insn : 1; |
| 234 | |
| 235 | /* A frag with this bit set is a branch that we are using to |
| 236 | align branch targets as if it were a normal narrow instruction. */ |
| 237 | unsigned int is_aligning_branch : 1; |
| 238 | |
| 239 | /* A trampoline frag that is located in the middle of code and thus |
| 240 | needs a jump around. */ |
| 241 | unsigned int needs_jump_around : 1; |
| 242 | |
| 243 | /* For text fragments that can generate literals at relax time, this |
| 244 | variable points to the frag where the literal will be stored. For |
| 245 | literal frags, this variable points to the nearest literal pool |
| 246 | location frag. This literal frag will be moved to after this |
| 247 | location. For RELAX_LITERAL_POOL_BEGIN frags, this field points |
| 248 | to the frag immediately before the corresponding RELAX_LITERAL_POOL_END |
| 249 | frag, to make moving frags for this literal pool efficient. */ |
| 250 | fragS *literal_frag; |
| 251 | |
| 252 | /* The destination segment for literal frags. (Note that this is only |
| 253 | valid after xtensa_move_literals.) This field is also used for |
| 254 | LITERAL_POOL_END frags. */ |
| 255 | segT lit_seg; |
| 256 | |
| 257 | /* Frag chain for LITERAL_POOL_BEGIN frags. */ |
| 258 | struct frchain *lit_frchain; |
| 259 | |
| 260 | /* For the relaxation scheme, some literal fragments can have their |
| 261 | expansions modified by an instruction that relaxes. */ |
| 262 | int text_expansion[MAX_SLOTS]; |
| 263 | int literal_expansion[MAX_SLOTS]; |
| 264 | int unreported_expansion; |
| 265 | |
| 266 | /* For slots that have a free register for relaxation, record that |
| 267 | register. */ |
| 268 | expressionS free_reg[MAX_SLOTS]; |
| 269 | |
| 270 | /* For text fragments that can generate literals at relax time: */ |
| 271 | fragS *literal_frags[MAX_SLOTS]; |
| 272 | enum xtensa_relax_statesE slot_subtypes[MAX_SLOTS]; |
| 273 | symbolS *slot_symbols[MAX_SLOTS]; |
| 274 | offsetT slot_offsets[MAX_SLOTS]; |
| 275 | |
| 276 | /* For trampoline fragments. */ |
| 277 | struct fix *jump_around_fix; |
| 278 | |
| 279 | /* When marking frags after this one in the chain as no transform, |
| 280 | cache the last one in the chain, so that we can skip to the |
| 281 | end of the chain. */ |
| 282 | fragS *no_transform_end; |
| 283 | }; |
| 284 | |
| 285 | |
| 286 | /* For VLIW support, we need to know what slot a fixup applies to. */ |
| 287 | typedef struct xtensa_fix_data_struct |
| 288 | { |
| 289 | int slot; |
| 290 | symbolS *X_add_symbol; |
| 291 | offsetT X_add_number; |
| 292 | } xtensa_fix_data; |
| 293 | |
| 294 | |
| 295 | /* Structure to record xtensa-specific symbol information. */ |
| 296 | typedef struct xtensa_symfield_type |
| 297 | { |
| 298 | unsigned int is_loop_target : 1; |
| 299 | unsigned int is_branch_target : 1; |
| 300 | symbolS *next_expr_symbol; |
| 301 | } xtensa_symfield_type; |
| 302 | |
| 303 | |
| 304 | /* Structure for saving information about a block of property data |
| 305 | for frags that have the same flags. The forward reference is |
| 306 | in this header file. The actual definition is in tc-xtensa.c. */ |
| 307 | struct xtensa_block_info_struct; |
| 308 | typedef struct xtensa_block_info_struct xtensa_block_info; |
| 309 | |
| 310 | |
| 311 | /* Property section types. */ |
| 312 | typedef enum |
| 313 | { |
| 314 | xt_literal_sec, |
| 315 | xt_prop_sec, |
| 316 | max_xt_sec |
| 317 | } xt_section_type; |
| 318 | |
| 319 | typedef struct xtensa_segment_info_struct |
| 320 | { |
| 321 | fragS *literal_pool_loc; |
| 322 | xtensa_block_info *blocks[max_xt_sec]; |
| 323 | } xtensa_segment_info; |
| 324 | |
| 325 | |
| 326 | extern const char *xtensa_target_format (void); |
| 327 | extern void xtensa_init_fix_data (struct fix *); |
| 328 | extern void xtensa_frag_init (fragS *); |
| 329 | extern int xtensa_force_relocation (struct fix *); |
| 330 | extern int xtensa_validate_fix_sub (struct fix *); |
| 331 | extern void xtensa_frob_label (struct symbol *); |
| 332 | extern void xtensa_end (void); |
| 333 | extern void xtensa_post_relax_hook (void); |
| 334 | extern void xtensa_file_arch_init (bfd *); |
| 335 | extern void xtensa_flush_pending_output (void); |
| 336 | extern bfd_boolean xtensa_fix_adjustable (struct fix *); |
| 337 | extern void xtensa_symbol_new_hook (symbolS *); |
| 338 | extern long xtensa_relax_frag (fragS *, long, int *); |
| 339 | extern void xtensa_elf_section_change_hook (void); |
| 340 | extern int xtensa_unrecognized_line (int); |
| 341 | extern bfd_boolean xtensa_check_inside_bundle (void); |
| 342 | extern void xtensa_handle_align (fragS *); |
| 343 | extern char *xtensa_section_rename (const char *); |
| 344 | |
| 345 | /* We need to set the target endianness in xtensa_init and not in md_begin. |
| 346 | This is because xtensa_target_format is called before md_begin, and we |
| 347 | want to have all non-statically initialized fields initialized. */ |
| 348 | |
| 349 | #define HOST_SPECIAL_INIT xtensa_init |
| 350 | extern void xtensa_init (int, char **); |
| 351 | |
| 352 | #define TARGET_FORMAT xtensa_target_format () |
| 353 | #define TARGET_ARCH bfd_arch_xtensa |
| 354 | #define TC_SEGMENT_INFO_TYPE xtensa_segment_info |
| 355 | #define TC_SYMFIELD_TYPE struct xtensa_symfield_type |
| 356 | #define TC_FIX_TYPE xtensa_fix_data |
| 357 | #define TC_INIT_FIX_DATA(x) xtensa_init_fix_data (x) |
| 358 | #define TC_FRAG_TYPE struct xtensa_frag_type |
| 359 | #define TC_FRAG_INIT(frag, max_bytes) xtensa_frag_init (frag) |
| 360 | #define TC_FORCE_RELOCATION(fix) xtensa_force_relocation (fix) |
| 361 | #define TC_FORCE_RELOCATION_SUB_SAME(fix, seg) \ |
| 362 | (GENERIC_FORCE_RELOCATION_SUB_SAME (fix, seg) \ |
| 363 | || xtensa_force_relocation (fix)) |
| 364 | #define TC_VALIDATE_FIX_SUB(fix, seg) xtensa_validate_fix_sub (fix) |
| 365 | #define NO_PSEUDO_DOT xtensa_check_inside_bundle () |
| 366 | #define tc_canonicalize_symbol_name(s) xtensa_section_rename (s) |
| 367 | #define tc_canonicalize_section_name(s) xtensa_section_rename (s) |
| 368 | #define tc_init_after_args() xtensa_file_arch_init (stdoutput) |
| 369 | #define tc_fix_adjustable(fix) xtensa_fix_adjustable (fix) |
| 370 | #define tc_frob_label(sym) xtensa_frob_label (sym) |
| 371 | #define tc_unrecognized_line(ch) xtensa_unrecognized_line (ch) |
| 372 | #define tc_symbol_new_hook(sym) xtensa_symbol_new_hook (sym) |
| 373 | #define md_do_align(a,b,c,d,e) xtensa_flush_pending_output () |
| 374 | #define md_elf_section_change_hook xtensa_elf_section_change_hook |
| 375 | #define md_end xtensa_end |
| 376 | #define md_flush_pending_output() xtensa_flush_pending_output () |
| 377 | #define md_operand(x) |
| 378 | #define TEXT_SECTION_NAME xtensa_section_rename (".text") |
| 379 | #define DATA_SECTION_NAME xtensa_section_rename (".data") |
| 380 | #define BSS_SECTION_NAME xtensa_section_rename (".bss") |
| 381 | #define HANDLE_ALIGN(fragP) xtensa_handle_align (fragP) |
| 382 | #define MAX_MEM_FOR_RS_ALIGN_CODE 1 |
| 383 | |
| 384 | |
| 385 | /* The renumber_section function must be mapped over all the sections |
| 386 | after calling xtensa_post_relax_hook. That function is static in |
| 387 | write.c so it cannot be called from xtensa_post_relax_hook itself. */ |
| 388 | |
| 389 | #define md_post_relax_hook \ |
| 390 | do \ |
| 391 | { \ |
| 392 | int i = 0; \ |
| 393 | xtensa_post_relax_hook (); \ |
| 394 | bfd_map_over_sections (stdoutput, renumber_sections, &i); \ |
| 395 | } \ |
| 396 | while (0) |
| 397 | |
| 398 | |
| 399 | /* Because xtensa relaxation can insert a new literal into the middle of |
| 400 | fragment and thus require re-running the relaxation pass on the |
| 401 | section, we need an explicit flag here. We explicitly use the name |
| 402 | "stretched" here to avoid changing the source code in write.c. */ |
| 403 | |
| 404 | #define md_relax_frag(segment, fragP, stretch) \ |
| 405 | xtensa_relax_frag (fragP, stretch, &stretched) |
| 406 | |
| 407 | /* Only allow call frame debug info optimization when linker relaxation is |
| 408 | not enabled as otherwise we could generate the DWARF directives without |
| 409 | the relocs necessary to patch them up. */ |
| 410 | #define md_allow_eh_opt (linkrelax == 0) |
| 411 | |
| 412 | #define LOCAL_LABELS_FB 1 |
| 413 | #define WORKING_DOT_WORD 1 |
| 414 | #define DOUBLESLASH_LINE_COMMENTS |
| 415 | #define TC_HANDLES_FX_DONE |
| 416 | #define TC_FINALIZE_SYMS_BEFORE_SIZE_SEG 0 |
| 417 | #define TC_LINKRELAX_FIXUP(SEG) 0 |
| 418 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
| 419 | #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) 0 |
| 420 | |
| 421 | /* Use line number format that is amenable to linker relaxation. */ |
| 422 | #define DWARF2_USE_FIXED_ADVANCE_PC (linkrelax != 0) |
| 423 | |
| 424 | |
| 425 | /* Resource reservation info functions. */ |
| 426 | |
| 427 | /* Returns the number of copies of a particular unit. */ |
| 428 | typedef int (*unit_num_copies_func) (void *, xtensa_funcUnit); |
| 429 | |
| 430 | /* Returns the number of units the opcode uses. */ |
| 431 | typedef int (*opcode_num_units_func) (void *, xtensa_opcode); |
| 432 | |
| 433 | /* Given an opcode and an index into the opcode's funcUnit list, |
| 434 | returns the unit used for the index. */ |
| 435 | typedef int (*opcode_funcUnit_use_unit_func) (void *, xtensa_opcode, int); |
| 436 | |
| 437 | /* Given an opcode and an index into the opcode's funcUnit list, |
| 438 | returns the cycle during which the unit is used. */ |
| 439 | typedef int (*opcode_funcUnit_use_stage_func) (void *, xtensa_opcode, int); |
| 440 | |
| 441 | /* The above typedefs parameterize the resource_table so that the |
| 442 | optional scheduler doesn't need its own resource reservation system. |
| 443 | |
| 444 | For simple resource checking, which is all that happens normally, |
| 445 | the functions will be as follows (with some wrapping to make the |
| 446 | interface more convenient): |
| 447 | |
| 448 | unit_num_copies_func = xtensa_funcUnit_num_copies |
| 449 | opcode_num_units_func = xtensa_opcode_num_funcUnit_uses |
| 450 | opcode_funcUnit_use_unit_func = xtensa_opcode_funcUnit_use->unit |
| 451 | opcode_funcUnit_use_stage_func = xtensa_opcode_funcUnit_use->stage |
| 452 | |
| 453 | Of course the optional scheduler has its own reservation table |
| 454 | and functions. */ |
| 455 | |
| 456 | int opcode_funcUnit_use_unit (void *, xtensa_opcode, int); |
| 457 | int opcode_funcUnit_use_stage (void *, xtensa_opcode, int); |
| 458 | |
| 459 | typedef struct |
| 460 | { |
| 461 | void *data; |
| 462 | int cycles; |
| 463 | int allocated_cycles; |
| 464 | int num_units; |
| 465 | unit_num_copies_func unit_num_copies; |
| 466 | opcode_num_units_func opcode_num_units; |
| 467 | opcode_funcUnit_use_unit_func opcode_unit_use; |
| 468 | opcode_funcUnit_use_stage_func opcode_unit_stage; |
| 469 | unsigned char **units; |
| 470 | } resource_table; |
| 471 | |
| 472 | resource_table *new_resource_table |
| 473 | (void *, int, int, unit_num_copies_func, opcode_num_units_func, |
| 474 | opcode_funcUnit_use_unit_func, opcode_funcUnit_use_stage_func); |
| 475 | void resize_resource_table (resource_table *, int); |
| 476 | void clear_resource_table (resource_table *); |
| 477 | bfd_boolean resources_available (resource_table *, xtensa_opcode, int); |
| 478 | void reserve_resources (resource_table *, xtensa_opcode, int); |
| 479 | void release_resources (resource_table *, xtensa_opcode, int); |
| 480 | |
| 481 | #endif /* TC_XTENSA */ |