1 /* Definitions of target machine for GNU compiler. NEC V850 series 2 Copyright (C) 1996-2018 Free Software Foundation, Inc. 3 Contributed by Jeff Law (law@cygnus.com). 4 5 This file is part of GCC. 6 7 GCC 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 3, or (at your option) 10 any later version. 11 12 GCC 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 Under Section 7 of GPL version 3, you are granted additional 18 permissions described in the GCC Runtime Library Exception, version 19 3.1, as published by the Free Software Foundation. 20 21 You should have received a copy of the GNU General Public License and 22 a copy of the GCC Runtime Library Exception along with this program; 23 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 24 <http://www.gnu.org/licenses/>. */ 25 26 #ifndef GCC_V850_H 27 #define GCC_V850_H 28 29 extern GTY(()) rtx v850_compare_op0; 30 extern GTY(()) rtx v850_compare_op1; 31 32 #undef LIB_SPEC 33 #define LIB_SPEC "%{!shared:%{!symbolic:--start-group -lc -lgcc --end-group}}" 34 35 #undef ENDFILE_SPEC 36 #undef LINK_SPEC 37 #undef STARTFILE_SPEC 38 #undef ASM_SPEC 39 40 #define TARGET_CPU_generic 1 41 #define TARGET_CPU_v850e 2 42 #define TARGET_CPU_v850e1 3 43 #define TARGET_CPU_v850e2 4 44 #define TARGET_CPU_v850e2v3 5 45 #define TARGET_CPU_v850e3v5 6 46 47 #ifndef TARGET_CPU_DEFAULT 48 #define TARGET_CPU_DEFAULT TARGET_CPU_generic 49 #endif 50 51 #define MASK_DEFAULT MASK_V850 52 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850}" 53 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850__}" 54 55 /* Choose which processor will be the default. 56 We must pass a -mv850xx option to the assembler if no explicit -mv* option 57 is given, because the assembler's processor default may not be correct. */ 58 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e 59 #undef MASK_DEFAULT 60 #define MASK_DEFAULT MASK_V850E 61 #undef SUBTARGET_ASM_SPEC 62 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e}" 63 #undef SUBTARGET_CPP_SPEC 64 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e__}" 65 #endif 66 67 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e1 68 #undef MASK_DEFAULT 69 #define MASK_DEFAULT MASK_V850E /* No practical difference. */ 70 #undef SUBTARGET_ASM_SPEC 71 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e1}" 72 #undef SUBTARGET_CPP_SPEC 73 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e1__} %{mv850e1:-D__v850e1__}" 74 #endif 75 76 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2 77 #undef MASK_DEFAULT 78 #define MASK_DEFAULT MASK_V850E2 79 #undef SUBTARGET_ASM_SPEC 80 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2}" 81 #undef SUBTARGET_CPP_SPEC 82 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2__} %{mv850e2:-D__v850e2__}" 83 #endif 84 85 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e2v3 86 #undef MASK_DEFAULT 87 #define MASK_DEFAULT MASK_V850E2V3 88 #undef SUBTARGET_ASM_SPEC 89 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e2v3}" 90 #undef SUBTARGET_CPP_SPEC 91 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e2v3__} %{mv850e2v3:-D__v850e2v3__}" 92 #endif 93 94 #if TARGET_CPU_DEFAULT == TARGET_CPU_v850e3v5 95 #undef MASK_DEFAULT 96 #define MASK_DEFAULT MASK_V850E3V5 97 #undef SUBTARGET_ASM_SPEC 98 #define SUBTARGET_ASM_SPEC "%{!mv*:-mv850e3v5}" 99 #undef SUBTARGET_CPP_SPEC 100 #define SUBTARGET_CPP_SPEC "%{!mv*:-D__v850e3v5__} %{mv850e3v5:-D__v850e3v5__}" 101 #undef TARGET_VERSION 102 #define TARGET_VERSION fprintf (stderr, " (Renesas V850E3V5)"); 103 #endif 104 105 #define TARGET_V850E3V5_UP ((TARGET_V850E3V5)) 106 #define TARGET_V850E2V3_UP ((TARGET_V850E2V3) || TARGET_V850E3V5_UP) 107 #define TARGET_V850E2_UP ((TARGET_V850E2) || TARGET_V850E2V3_UP) 108 #define TARGET_V850E_UP ((TARGET_V850E) || TARGET_V850E2_UP) 109 #define TARGET_ALL ((TARGET_V850) || TARGET_V850E_UP) 110 111 #define ASM_SPEC "%{m850es:-mv850e1}%{!mv850es:%{mv*:-mv%*}} \ 112 %{mrelax:-mrelax} \ 113 %{m8byte-align:-m8byte-align} \ 114 %{msoft-float:-msoft-float} \ 115 %{mhard-float:-mhard-float} \ 116 %{mgcc-abi:-mgcc-abi}" 117 118 #define LINK_SPEC "%{mgcc-abi:-m v850}" 119 120 #define CPP_SPEC "\ 121 %{mv850e3v5:-D__v850e3v5__} \ 122 %{mv850e2v3:-D__v850e2v3__} \ 123 %{mv850e2:-D__v850e2__} \ 124 %{mv850es:-D__v850e1__} \ 125 %{mv850e1:-D__v850e1__} \ 126 %{mv850e:-D__v850e__} \ 127 %{mv850:-D__v850__} \ 128 %(subtarget_cpp_spec) \ 129 %{mep:-D__EP__}" 130 131 #define EXTRA_SPECS \ 132 { "subtarget_asm_spec", SUBTARGET_ASM_SPEC }, \ 133 { "subtarget_cpp_spec", SUBTARGET_CPP_SPEC } 134 135 136 /* Macro to decide when FPU instructions can be used. */ 137 #define TARGET_USE_FPU (TARGET_V850E2V3_UP && ! TARGET_SOFT_FLOAT) 138 139 #define TARGET_CPU_CPP_BUILTINS() \ 140 do \ 141 { \ 142 builtin_define( "__v851__" ); \ 143 builtin_define( "__v850" ); \ 144 builtin_define( "__v850__" ); \ 145 builtin_assert( "machine=v850" ); \ 146 builtin_assert( "cpu=v850" ); \ 147 if (TARGET_EP) \ 148 builtin_define ("__EP__"); \ 149 if (TARGET_GCC_ABI) \ 150 builtin_define ("__V850_GCC_ABI__"); \ 151 else \ 152 builtin_define ("__V850_RH850_ABI__"); \ 153 if (! TARGET_DISABLE_CALLT) \ 154 builtin_define ("__V850_CALLT__"); \ 155 if (TARGET_8BYTE_ALIGN) \ 156 builtin_define ("__V850_8BYTE_ALIGN__");\ 157 builtin_define (TARGET_USE_FPU ? \ 158 "__FPU_OK__" : "__NO_FPU__");\ 159 } \ 160 while(0) 161 162 #define MASK_CPU (MASK_V850 | MASK_V850E | MASK_V850E1 | MASK_V850E2 | MASK_V850E2V3 | MASK_V850E3V5) 163 164 /* Target machine storage layout */ 165 166 /* Define this if most significant bit is lowest numbered 167 in instructions that operate on numbered bit-fields. 168 This is not true on the NEC V850. */ 169 #define BITS_BIG_ENDIAN 0 170 171 /* Define this if most significant byte of a word is the lowest numbered. */ 172 /* This is not true on the NEC V850. */ 173 #define BYTES_BIG_ENDIAN 0 174 175 /* Define this if most significant word of a multiword number is lowest 176 numbered. 177 This is not true on the NEC V850. */ 178 #define WORDS_BIG_ENDIAN 0 179 180 /* Width of a word, in units (bytes). */ 181 #define UNITS_PER_WORD 4 182 183 /* Define this macro if it is advisable to hold scalars in registers 184 in a wider mode than that declared by the program. In such cases, 185 the value is constrained to be within the bounds of the declared 186 type, but kept valid in the wider mode. The signedness of the 187 extension may differ from that of the type. 188 189 Some simple experiments have shown that leaving UNSIGNEDP alone 190 generates the best overall code. */ 191 192 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ 193 if (GET_MODE_CLASS (MODE) == MODE_INT \ 194 && GET_MODE_SIZE (MODE) < 4) \ 195 { (MODE) = SImode; } 196 197 /* Allocation boundary (in *bits*) for storing arguments in argument list. */ 198 #define PARM_BOUNDARY 32 199 200 /* The stack goes in 32-bit lumps. */ 201 #define STACK_BOUNDARY BIGGEST_ALIGNMENT 202 203 /* Allocation boundary (in *bits*) for the code of a function. 204 16 is the minimum boundary; 32 would give better performance. */ 205 #define FUNCTION_BOUNDARY (((! TARGET_GCC_ABI) || optimize_size) ? 16 : 32) 206 207 /* No data type wants to be aligned rounder than this. */ 208 #define BIGGEST_ALIGNMENT (TARGET_8BYTE_ALIGN ? 64 : 32) 209 210 /* Alignment of field after `int : 0' in a structure. */ 211 #define EMPTY_FIELD_BOUNDARY 32 212 213 /* No structure field wants to be aligned rounder than this. */ 214 #define BIGGEST_FIELD_ALIGNMENT BIGGEST_ALIGNMENT 215 216 /* Define this if move instructions will actually fail to work 217 when given unaligned data. */ 218 #define STRICT_ALIGNMENT (!TARGET_NO_STRICT_ALIGN) 219 220 /* Define this as 1 if `char' should by default be signed; else as 0. 221 222 On the NEC V850, loads do sign extension, so make this default. */ 223 #define DEFAULT_SIGNED_CHAR 1 224 225 #undef SIZE_TYPE 226 #define SIZE_TYPE "unsigned int" 227 228 #undef PTRDIFF_TYPE 229 #define PTRDIFF_TYPE "int" 230 231 #undef WCHAR_TYPE 232 #define WCHAR_TYPE "long int" 233 234 #undef WCHAR_TYPE_SIZE 235 #define WCHAR_TYPE_SIZE BITS_PER_WORD 236 237 /* Standard register usage. */ 238 239 /* Number of actual hardware registers. 240 The hardware registers are assigned numbers for the compiler 241 from 0 to just below FIRST_PSEUDO_REGISTER. 242 243 All registers that the compiler knows about must be given numbers, 244 even those that are not normally considered general registers. */ 245 246 #define FIRST_PSEUDO_REGISTER 36 247 248 /* 1 for registers that have pervasive standard uses 249 and are not available for the register allocator. */ 250 251 #define FIXED_REGISTERS \ 252 { 1, 1, 1, 1, 1, 1, 0, 0, \ 253 0, 0, 0, 0, 0, 0, 0, 0, \ 254 0, 0, 0, 0, 0, 0, 0, 0, \ 255 0, 0, 0, 0, 0, 0, 1, 0, \ 256 1, 1, \ 257 1, 1} 258 259 /* 1 for registers not available across function calls. 260 These must include the FIXED_REGISTERS and also any 261 registers that can be used without being saved. 262 The latter must include the registers where values are returned 263 and the register where structure-value addresses are passed. 264 Aside from that, you can include as many other registers as you 265 like. */ 266 267 #define CALL_USED_REGISTERS \ 268 { 1, 1, 1, 1, 1, 1, 1, 1, \ 269 1, 1, 1, 1, 1, 1, 1, 1, \ 270 1, 1, 1, 1, 0, 0, 0, 0, \ 271 0, 0, 0, 0, 0, 0, 1, 1, \ 272 1, 1, \ 273 1, 1} 274 275 /* List the order in which to allocate registers. Each register must be 276 listed once, even those in FIXED_REGISTERS. 277 278 On the 850, we make the return registers first, then all of the volatile 279 registers, then the saved registers in reverse order to better save the 280 registers with an out of line function, and finally the fixed 281 registers. */ 282 283 #define REG_ALLOC_ORDER \ 284 { \ 285 10, 11, /* return registers */ \ 286 12, 13, 14, 15, 16, 17, 18, 19, /* scratch registers */ \ 287 6, 7, 8, 9, 31, /* argument registers */ \ 288 29, 28, 27, 26, 25, 24, 23, 22, /* saved registers */ \ 289 21, 20, 2, \ 290 0, 1, 3, 4, 5, 30, 32, 33, /* fixed registers */ \ 291 34, 35 \ 292 } 293 294 295 /* Define the classes of registers for register constraints in the 296 machine description. Also define ranges of constants. 297 298 One of the classes must always be named ALL_REGS and include all hard regs. 299 If there is more than one class, another class must be named NO_REGS 300 and contain no registers. 301 302 The name GENERAL_REGS must be the name of a class (or an alias for 303 another name such as ALL_REGS). This is the class of registers 304 that is allowed by "g" or "r" in a register constraint. 305 Also, registers outside this class are allocated only when 306 instructions express preferences for them. 307 308 The classes must be numbered in nondecreasing order; that is, 309 a larger-numbered class must never be contained completely 310 in a smaller-numbered class. 311 312 For any two classes, it is very desirable that there be another 313 class that represents their union. */ 314 315 enum reg_class 316 { 317 NO_REGS, EVEN_REGS, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES 318 }; 319 320 #define N_REG_CLASSES (int) LIM_REG_CLASSES 321 322 /* Give names of register classes as strings for dump file. */ 323 324 #define REG_CLASS_NAMES \ 325 { "NO_REGS", "EVEN_REGS", "GENERAL_REGS", "ALL_REGS", "LIM_REGS" } 326 327 /* Define which registers fit in which classes. 328 This is an initializer for a vector of HARD_REG_SET 329 of length N_REG_CLASSES. */ 330 331 #define REG_CLASS_CONTENTS \ 332 { \ 333 { 0x00000000,0x0 }, /* NO_REGS */ \ 334 { 0x55555554,0x0 }, /* EVEN_REGS */ \ 335 { 0xfffffffe,0x0 }, /* GENERAL_REGS */ \ 336 { 0xffffffff,0x0 }, /* ALL_REGS */ \ 337 } 338 339 /* The same information, inverted: 340 Return the class number of the smallest class containing 341 reg number REGNO. This could be a conditional expression 342 or could index an array. */ 343 344 #define REGNO_REG_CLASS(REGNO) ((REGNO == CC_REGNUM || REGNO == FCC_REGNUM) ? NO_REGS : GENERAL_REGS) 345 346 /* The class value for index registers, and the one for base regs. */ 347 348 #define INDEX_REG_CLASS NO_REGS 349 #define BASE_REG_CLASS GENERAL_REGS 350 351 /* Macros to check register numbers against specific register classes. */ 352 353 /* These assume that REGNO is a hard or pseudo reg number. 354 They give nonzero only if REGNO is a hard reg of the suitable class 355 or a pseudo reg currently allocated to a suitable hard reg. 356 Since they use reg_renumber, they are safe only once reg_renumber 357 has been allocated, which happens in reginfo.c during register 358 allocation. */ 359 360 #define REGNO_OK_FOR_BASE_P(regno) \ 361 (((regno) < FIRST_PSEUDO_REGISTER \ 362 && (regno) != CC_REGNUM \ 363 && (regno) != FCC_REGNUM) \ 364 || reg_renumber[regno] >= 0) 365 366 #define REGNO_OK_FOR_INDEX_P(regno) 0 367 368 /* Convenience wrappers around insn_const_int_ok_for_constraint. */ 369 370 #define CONST_OK_FOR_I(VALUE) \ 371 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_I) 372 #define CONST_OK_FOR_J(VALUE) \ 373 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_J) 374 #define CONST_OK_FOR_K(VALUE) \ 375 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_K) 376 #define CONST_OK_FOR_L(VALUE) \ 377 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_L) 378 #define CONST_OK_FOR_M(VALUE) \ 379 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_M) 380 #define CONST_OK_FOR_N(VALUE) \ 381 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_N) 382 #define CONST_OK_FOR_O(VALUE) \ 383 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_O) 384 #define CONST_OK_FOR_W(VALUE) \ 385 insn_const_int_ok_for_constraint (VALUE, CONSTRAINT_W) 386 387 /* Stack layout; function entry, exit and calling. */ 388 389 /* Define this if pushing a word on the stack 390 makes the stack pointer a smaller address. */ 391 392 #define STACK_GROWS_DOWNWARD 1 393 394 /* Define this to nonzero if the nominal address of the stack frame 395 is at the high-address end of the local variables; 396 that is, each additional local variable allocated 397 goes at a more negative offset in the frame. */ 398 399 #define FRAME_GROWS_DOWNWARD 1 400 401 /* Offset of first parameter from the argument pointer register value. */ 402 /* Is equal to the size of the saved fp + pc, even if an fp isn't 403 saved since the value is used before we know. */ 404 405 #define FIRST_PARM_OFFSET(FNDECL) 0 406 407 /* Specify the registers used for certain standard purposes. 408 The values of these macros are register numbers. */ 409 410 /* Register to use for pushing function arguments. */ 411 #define STACK_POINTER_REGNUM SP_REGNUM 412 413 /* Base register for access to local variables of the function. */ 414 #define FRAME_POINTER_REGNUM 34 415 416 /* Register containing return address from latest function call. */ 417 #define LINK_POINTER_REGNUM LP_REGNUM 418 419 /* On some machines the offset between the frame pointer and starting 420 offset of the automatic variables is not known until after register 421 allocation has been done (for example, because the saved registers 422 are between these two locations). On those machines, define 423 `FRAME_POINTER_REGNUM' the number of a special, fixed register to 424 be used internally until the offset is known, and define 425 `HARD_FRAME_POINTER_REGNUM' to be actual the hard register number 426 used for the frame pointer. 427 428 You should define this macro only in the very rare circumstances 429 when it is not possible to calculate the offset between the frame 430 pointer and the automatic variables until after register 431 allocation has been completed. When this macro is defined, you 432 must also indicate in your definition of `ELIMINABLE_REGS' how to 433 eliminate `FRAME_POINTER_REGNUM' into either 434 `HARD_FRAME_POINTER_REGNUM' or `STACK_POINTER_REGNUM'. 435 436 Do not define this macro if it would be the same as 437 `FRAME_POINTER_REGNUM'. */ 438 #undef HARD_FRAME_POINTER_REGNUM 439 #define HARD_FRAME_POINTER_REGNUM 29 440 441 /* Base register for access to arguments of the function. */ 442 #define ARG_POINTER_REGNUM 35 443 444 /* Register in which static-chain is passed to a function. */ 445 #define STATIC_CHAIN_REGNUM 20 446 447 /* If defined, this macro specifies a table of register pairs used to 448 eliminate unneeded registers that point into the stack frame. If 449 it is not defined, the only elimination attempted by the compiler 450 is to replace references to the frame pointer with references to 451 the stack pointer. 452 453 The definition of this macro is a list of structure 454 initializations, each of which specifies an original and 455 replacement register. 456 457 On some machines, the position of the argument pointer is not 458 known until the compilation is completed. In such a case, a 459 separate hard register must be used for the argument pointer. 460 This register can be eliminated by replacing it with either the 461 frame pointer or the argument pointer, depending on whether or not 462 the frame pointer has been eliminated. 463 464 In this case, you might specify: 465 #define ELIMINABLE_REGS \ 466 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 467 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 468 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} 469 470 Note that the elimination of the argument pointer with the stack 471 pointer is specified first since that is the preferred elimination. */ 472 473 #define ELIMINABLE_REGS \ 474 {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM }, \ 475 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }, \ 476 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM }, \ 477 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM }} \ 478 479 /* This macro returns the initial difference between the specified pair 480 of registers. */ 481 482 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 483 { \ 484 if ((FROM) == FRAME_POINTER_REGNUM) \ 485 (OFFSET) = get_frame_size () + crtl->outgoing_args_size; \ 486 else if ((FROM) == ARG_POINTER_REGNUM) \ 487 (OFFSET) = compute_frame_size (get_frame_size (), (long *)0); \ 488 else \ 489 gcc_unreachable (); \ 490 } 491 492 /* Keep the stack pointer constant throughout the function. */ 493 #define ACCUMULATE_OUTGOING_ARGS 1 494 495 #define RETURN_ADDR_RTX(COUNT, FP) v850_return_addr (COUNT) 496 497 /* Define a data type for recording info about an argument list 498 during the scan of that argument list. This data type should 499 hold all necessary information about the function itself 500 and about the args processed so far, enough to enable macros 501 such as FUNCTION_ARG to determine where the next arg should go. */ 502 503 #define CUMULATIVE_ARGS struct cum_arg 504 struct cum_arg { int nbytes; }; 505 506 /* Initialize a variable CUM of type CUMULATIVE_ARGS 507 for a call to a function whose data type is FNTYPE. 508 For a library call, FNTYPE is 0. */ 509 510 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ 511 do { (CUM).nbytes = 0; } while (0) 512 513 /* When a parameter is passed in a register, stack space is still 514 allocated for it. */ 515 #define REG_PARM_STACK_SPACE(DECL) 0 516 517 /* 1 if N is a possible register number for function argument passing. */ 518 519 #define FUNCTION_ARG_REGNO_P(N) (N >= 6 && N <= 9) 520 521 #define DEFAULT_PCC_STRUCT_RETURN 0 522 523 /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, 524 the stack pointer does not matter. The value is tested only in 525 functions that have frame pointers. 526 No definition is equivalent to always zero. */ 527 528 #define EXIT_IGNORE_STACK 1 529 530 /* Define this macro as a C expression that is nonzero for registers 531 used by the epilogue or the `return' pattern. */ 532 533 #define EPILOGUE_USES(REGNO) \ 534 (reload_completed && (REGNO) == LINK_POINTER_REGNUM) 535 536 /* Output assembler code to FILE to increment profiler label # LABELNO 537 for profiling a function entry. */ 538 539 #define FUNCTION_PROFILER(FILE, LABELNO) ; 540 541 /* Length in units of the trampoline for entering a nested function. */ 542 543 #define TRAMPOLINE_SIZE 24 544 545 /* Addressing modes, and classification of registers for them. */ 546 547 548 /* 1 if X is an rtx for a constant that is a valid address. */ 549 550 /* ??? This seems too exclusive. May get better code by accepting more 551 possibilities here, in particular, should accept ZDA_NAME SYMBOL_REFs. */ 552 553 #define CONSTANT_ADDRESS_P(X) constraint_satisfied_p (X, CONSTRAINT_K) 554 555 /* Maximum number of registers that can appear in a valid memory address. */ 556 557 #define MAX_REGS_PER_ADDRESS 1 558 559 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, 560 return the mode to be used for the comparison. 561 562 For floating-point equality comparisons, CCFPEQmode should be used. 563 VOIDmode should be used in all other cases. 564 565 For integer comparisons against zero, reduce to CCNOmode or CCZmode if 566 possible, to allow for more combinations. */ 567 568 #define SELECT_CC_MODE(OP, X, Y) v850_select_cc_mode (OP, X, Y) 569 570 /* Tell final.c how to eliminate redundant test instructions. */ 571 572 /* Here we define machine-dependent flags and fields in cc_status 573 (see `conditions.h'). No extra ones are needed for the VAX. */ 574 575 /* Store in cc_status the expressions 576 that the condition codes will describe 577 after execution of an instruction whose pattern is EXP. 578 Do not alter them if the instruction would not alter the cc's. */ 579 580 #define CC_OVERFLOW_UNUSABLE 0x200 581 #define CC_NO_CARRY CC_NO_OVERFLOW 582 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN) 583 584 /* Nonzero if access to memory by bytes or half words is no faster 585 than accessing full words. */ 586 #define SLOW_BYTE_ACCESS 1 587 588 /* According expr.c, a value of around 6 should minimize code size, and 589 for the V850 series, that's our primary concern. */ 590 #define MOVE_RATIO(speed) 6 591 592 /* Indirect calls are expensive, never turn a direct call 593 into an indirect call. */ 594 #define NO_FUNCTION_CSE 1 595 596 /* The four different data regions on the v850. */ 597 typedef enum 598 { 599 DATA_AREA_NORMAL, 600 DATA_AREA_SDA, 601 DATA_AREA_TDA, 602 DATA_AREA_ZDA 603 } v850_data_area; 604 605 #define TEXT_SECTION_ASM_OP "\t.section .text" 606 #define DATA_SECTION_ASM_OP "\t.section .data" 607 #define BSS_SECTION_ASM_OP "\t.section .bss" 608 #define SDATA_SECTION_ASM_OP "\t.section .sdata,\"aw\"" 609 #define SBSS_SECTION_ASM_OP "\t.section .sbss,\"aw\"" 610 611 #define SCOMMON_ASM_OP "\t.scomm\t" 612 #define ZCOMMON_ASM_OP "\t.zcomm\t" 613 #define TCOMMON_ASM_OP "\t.tcomm\t" 614 615 #define ASM_COMMENT_START "#" 616 617 /* Output to assembler file text saying following lines 618 may contain character constants, extra white space, comments, etc. */ 619 620 #define ASM_APP_ON "#APP\n" 621 622 /* Output to assembler file text saying following lines 623 no longer contain unusual constructs. */ 624 625 #define ASM_APP_OFF "#NO_APP\n" 626 627 #undef USER_LABEL_PREFIX 628 #define USER_LABEL_PREFIX "_" 629 630 /* This says how to output the assembler to define a global 631 uninitialized but not common symbol. */ 632 633 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 634 asm_output_aligned_bss ((FILE), (DECL), (NAME), (SIZE), (ALIGN)) 635 636 #undef ASM_OUTPUT_ALIGNED_BSS 637 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ 638 v850_output_aligned_bss (FILE, DECL, NAME, SIZE, ALIGN) 639 640 /* This says how to output the assembler to define a global 641 uninitialized, common symbol. */ 642 #undef ASM_OUTPUT_ALIGNED_COMMON 643 #undef ASM_OUTPUT_COMMON 644 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ 645 v850_output_common (FILE, DECL, NAME, SIZE, ALIGN) 646 647 /* This says how to output the assembler to define a local 648 uninitialized symbol. */ 649 #undef ASM_OUTPUT_ALIGNED_LOCAL 650 #undef ASM_OUTPUT_LOCAL 651 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ 652 v850_output_local (FILE, DECL, NAME, SIZE, ALIGN) 653 654 /* Globalizing directive for a label. */ 655 #define GLOBAL_ASM_OP "\t.global " 656 657 #define ASM_PN_FORMAT "%s___%lu" 658 659 /* This is how we tell the assembler that two symbols have the same value. */ 660 661 #define ASM_OUTPUT_DEF(FILE,NAME1,NAME2) \ 662 do { assemble_name(FILE, NAME1); \ 663 fputs(" = ", FILE); \ 664 assemble_name(FILE, NAME2); \ 665 fputc('\n', FILE); } while (0) 666 667 668 /* How to refer to registers in assembler output. 669 This sequence is indexed by compiler's hard-register-number (see above). */ 670 671 #define REGISTER_NAMES \ 672 { "r0", "r1", "r2", "sp", "gp", "r5", "r6" , "r7", \ 673 "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", \ 674 "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23", \ 675 "r24", "r25", "r26", "r27", "r28", "r29", "ep", "r31", \ 676 "psw", "fcc", \ 677 ".fp", ".ap"} 678 679 /* Register numbers */ 680 681 #define ADDITIONAL_REGISTER_NAMES \ 682 { { "zero", ZERO_REGNUM }, \ 683 { "hp", 2 }, \ 684 { "r3", 3 }, \ 685 { "r4", 4 }, \ 686 { "tp", 5 }, \ 687 { "fp", 29 }, \ 688 { "r30", 30 }, \ 689 { "lp", LP_REGNUM} } 690 691 /* This is how to output an element of a case-vector that is absolute. */ 692 693 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ 694 fprintf (FILE, "\t%s .L%d\n", \ 695 (TARGET_BIG_SWITCH ? ".long" : ".short"), VALUE) 696 697 /* This is how to output an element of a case-vector that is relative. */ 698 699 /* Disable the shift, which is for the currently disabled "switch" 700 opcode. Se casesi in v850.md. */ 701 702 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ 703 fprintf (FILE, "\t%s %s.L%d-.L%d%s\n", \ 704 (TARGET_BIG_SWITCH ? ".long" : ".short"), \ 705 (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E_UP) ? "(" : ""), \ 706 VALUE, REL, \ 707 (0 && ! TARGET_BIG_SWITCH && (TARGET_V850E_UP) ? ")>>1" : "")) 708 709 #define ASM_OUTPUT_ALIGN(FILE, LOG) \ 710 if ((LOG) != 0) \ 711 fprintf (FILE, "\t.align %d\n", (LOG)) 712 713 /* We don't have to worry about dbx compatibility for the v850. */ 714 #define DEFAULT_GDB_EXTENSIONS 1 715 716 /* Use dwarf2 debugging info by default. */ 717 #undef PREFERRED_DEBUGGING_TYPE 718 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG 719 720 #define DWARF2_FRAME_INFO 1 721 #define DWARF2_UNWIND_INFO 0 722 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, LINK_POINTER_REGNUM) 723 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (LINK_POINTER_REGNUM) 724 725 #ifndef ASM_GENERATE_INTERNAL_LABEL 726 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \ 727 sprintf (STRING, "*.%s%u", PREFIX, (unsigned int)(NUM)) 728 #endif 729 730 /* Specify the machine mode that this machine uses 731 for the index in the tablejump instruction. */ 732 #define CASE_VECTOR_MODE (TARGET_BIG_SWITCH ? SImode : HImode) 733 734 /* Define as C expression which evaluates to nonzero if the tablejump 735 instruction expects the table to contain offsets from the address of the 736 table. 737 Do not define this if the table should contain absolute addresses. */ 738 #define CASE_VECTOR_PC_RELATIVE 1 739 740 /* The switch instruction requires that the jump table immediately follow 741 it. */ 742 #define JUMP_TABLES_IN_TEXT_SECTION (!TARGET_JUMP_TABLES_IN_DATA_SECTION) 743 744 #undef ASM_OUTPUT_BEFORE_CASE_LABEL 745 #define ASM_OUTPUT_BEFORE_CASE_LABEL(FILE,PREFIX,NUM,TABLE) \ 746 ASM_OUTPUT_ALIGN ((FILE), (TARGET_BIG_SWITCH ? 2 : 1)) 747 748 #define WORD_REGISTER_OPERATIONS 1 749 750 /* Byte and short loads sign extend the value to a word. */ 751 #define LOAD_EXTEND_OP(MODE) SIGN_EXTEND 752 753 /* Max number of bytes we can move from memory to memory 754 in one reasonably fast instruction. */ 755 #define MOVE_MAX 4 756 757 /* Define if shifts truncate the shift count 758 which implies one can omit a sign-extension or zero-extension 759 of a shift count. */ 760 #define SHIFT_COUNT_TRUNCATED 1 761 762 /* Specify the machine mode that pointers have. 763 After generation of rtl, the compiler makes no further distinction 764 between pointers and any other objects of this machine mode. */ 765 #define Pmode SImode 766 767 /* A function address in a call instruction 768 is a byte address (for indexing purposes) 769 so give the MEM rtx a byte's mode. */ 770 #define FUNCTION_MODE QImode 771 772 /* Tell compiler we want to support GHS pragmas */ 773 #define REGISTER_TARGET_PRAGMAS() do { \ 774 c_register_pragma ("ghs", "interrupt", ghs_pragma_interrupt); \ 775 c_register_pragma ("ghs", "section", ghs_pragma_section); \ 776 c_register_pragma ("ghs", "starttda", ghs_pragma_starttda); \ 777 c_register_pragma ("ghs", "startsda", ghs_pragma_startsda); \ 778 c_register_pragma ("ghs", "startzda", ghs_pragma_startzda); \ 779 c_register_pragma ("ghs", "endtda", ghs_pragma_endtda); \ 780 c_register_pragma ("ghs", "endsda", ghs_pragma_endsda); \ 781 c_register_pragma ("ghs", "endzda", ghs_pragma_endzda); \ 782 } while (0) 783 784 /* enum GHS_SECTION_KIND is an enumeration of the kinds of sections that 785 can appear in the "ghs section" pragma. These names are used to index 786 into the GHS_default_section_names[] and GHS_current_section_names[] 787 that are defined in v850.c, and so the ordering of each must remain 788 consistent. 789 790 These arrays give the default and current names for each kind of 791 section defined by the GHS pragmas. The current names can be changed 792 by the "ghs section" pragma. If the current names are null, use 793 the default names. Note that the two arrays have different types. 794 795 For the *normal* section kinds (like .data, .text, etc.) we do not 796 want to explicitly force the name of these sections, but would rather 797 let the linker (or at least the back end) choose the name of the 798 section, UNLESS the user has forced a specific name for these section 799 kinds. To accomplish this set the name in ghs_default_section_names 800 to null. */ 801 802 enum GHS_section_kind 803 { 804 GHS_SECTION_KIND_DEFAULT, 805 806 GHS_SECTION_KIND_TEXT, 807 GHS_SECTION_KIND_DATA, 808 GHS_SECTION_KIND_RODATA, 809 GHS_SECTION_KIND_BSS, 810 GHS_SECTION_KIND_SDATA, 811 GHS_SECTION_KIND_ROSDATA, 812 GHS_SECTION_KIND_TDATA, 813 GHS_SECTION_KIND_ZDATA, 814 GHS_SECTION_KIND_ROZDATA, 815 816 COUNT_OF_GHS_SECTION_KINDS /* must be last */ 817 }; 818 819 /* The following code is for handling pragmas supported by the 820 v850 compiler produced by Green Hills Software. This is at 821 the specific request of a customer. */ 822 823 typedef struct data_area_stack_element 824 { 825 struct data_area_stack_element * prev; 826 v850_data_area data_area; /* Current default data area. */ 827 } data_area_stack_element; 828 829 /* Track the current data area set by the 830 data area pragma (which can be nested). */ 831 extern data_area_stack_element * data_area_stack; 832 833 /* Names of the various data areas used on the v850. */ 834 extern const char * GHS_default_section_names [(int) COUNT_OF_GHS_SECTION_KINDS]; 835 extern const char * GHS_current_section_names [(int) COUNT_OF_GHS_SECTION_KINDS]; 836 837 /* The assembler op to start the file. */ 838 839 #define FILE_ASM_OP "\t.file\n" 840 841 /* Implement ZDA, TDA, and SDA */ 842 843 #define EP_REGNUM 30 /* ep register number */ 844 845 #define SYMBOL_FLAG_ZDA (SYMBOL_FLAG_MACH_DEP << 0) 846 #define SYMBOL_FLAG_TDA (SYMBOL_FLAG_MACH_DEP << 1) 847 #define SYMBOL_FLAG_SDA (SYMBOL_FLAG_MACH_DEP << 2) 848 #define SYMBOL_REF_ZDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_ZDA) != 0) 849 #define SYMBOL_REF_TDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_TDA) != 0) 850 #define SYMBOL_REF_SDA_P(X) ((SYMBOL_REF_FLAGS (X) & SYMBOL_FLAG_SDA) != 0) 851 852 #define TARGET_ASM_INIT_SECTIONS v850_asm_init_sections 853 854 /* Define this so that the cc1plus will not think that system header files 855 need an implicit 'extern "C" { ... }' assumed. This breaks testing C++ 856 in a build directory where the libstdc++ header files are found via a 857 -isystem <path-to-build-dir>. */ 858 #define NO_IMPLICIT_EXTERN_C 859 860 #define ADJUST_INSN_LENGTH(INSN, LENGTH) \ 861 ((LENGTH) = v850_adjust_insn_length ((INSN), (LENGTH))) 862 863 #endif /* ! GCC_V850_H */ 864