1/* Definitions of target machine for GNU compiler, for CRX. 2 Copyright (C) 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 3 2001, 2002, 2003, 2004 Free Software Foundation, Inc. 4 5 This file is part of GCC. 6 7 GCC is free software; you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 2, or (at your 10 option) any later version. 11 12 GCC is distributed in the hope that it will be useful, but WITHOUT 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 15 License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with GCC; see the file COPYING. If not, write to 19 the Free Software Foundation, 51 Franklin Street, Fifth Floor, 20 Boston, MA 02110-1301, USA. */ 21 22#ifndef GCC_CRX_H 23#define GCC_CRX_H 24 25/*****************************************************************************/ 26/* CONTROLLING THE DRIVER */ 27/*****************************************************************************/ 28 29#define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \ 30 %{!fenforce-eh-specs:-fno-enforce-eh-specs} \ 31 %{!fexceptions:-fno-exceptions} \ 32 %{!fthreadsafe-statics:-fno-threadsafe-statics}" 33 34#undef STARTFILE_SPEC 35#define STARTFILE_SPEC "crti.o%s crtbegin.o%s" 36 37#undef ENDFILE_SPEC 38#define ENDFILE_SPEC "crtend.o%s crtn.o%s" 39 40#undef MATH_LIBRARY 41#define MATH_LIBRARY "" 42 43/*****************************************************************************/ 44/* RUN-TIME TARGET SPECIFICATION */ 45/*****************************************************************************/ 46 47#ifndef TARGET_CPU_CPP_BUILTINS 48#define TARGET_CPU_CPP_BUILTINS() \ 49do { \ 50 builtin_define("__CRX__"); \ 51 builtin_define("__CR__"); \ 52} while (0) 53#endif 54 55#define TARGET_VERSION fputs (" (CRX/ELF)", stderr); 56 57/* Put each function in its own section so that PAGE-instruction 58 * relaxation can do its best. */ 59#define OPTIMIZATION_OPTIONS(LEVEL, SIZEFLAG) \ 60 do { \ 61 if ((LEVEL) || (SIZEFLAG)) \ 62 flag_function_sections = 1; \ 63 } while (0) 64 65/* Show we can debug even without a frame pointer. */ 66#define CAN_DEBUG_WITHOUT_FP 67 68/*****************************************************************************/ 69/* STORAGE LAYOUT */ 70/*****************************************************************************/ 71 72#define BITS_BIG_ENDIAN 0 73 74#define BYTES_BIG_ENDIAN 0 75 76#define WORDS_BIG_ENDIAN 0 77 78#define UNITS_PER_WORD 4 79 80#define POINTER_SIZE 32 81 82#define PARM_BOUNDARY 32 83 84#define STACK_BOUNDARY 32 85 86#define FUNCTION_BOUNDARY 32 87 88#define STRUCTURE_SIZE_BOUNDARY 32 89 90#define BIGGEST_ALIGNMENT 32 91 92/* In CRX arrays of chars are word-aligned, so strcpy() will be faster. */ 93#define DATA_ALIGNMENT(TYPE, ALIGN) \ 94 (TREE_CODE (TYPE) == ARRAY_TYPE && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ 95 && (ALIGN) < BITS_PER_WORD \ 96 ? (BITS_PER_WORD) : (ALIGN)) 97 98/* In CRX strings are word-aligned so strcpy from constants will be faster. */ 99#define CONSTANT_ALIGNMENT(CONSTANT, ALIGN) \ 100 (TREE_CODE (CONSTANT) == STRING_CST && (ALIGN) < BITS_PER_WORD \ 101 ? (BITS_PER_WORD) : (ALIGN)) 102 103#define STRICT_ALIGNMENT 0 104 105#define PCC_BITFIELD_TYPE_MATTERS 1 106 107/*****************************************************************************/ 108/* LAYOUT OF SOURCE LANGUAGE DATA TYPES */ 109/*****************************************************************************/ 110 111#define INT_TYPE_SIZE 32 112 113#define SHORT_TYPE_SIZE 16 114 115#define LONG_TYPE_SIZE 32 116 117#define LONG_LONG_TYPE_SIZE 64 118 119#define FLOAT_TYPE_SIZE 32 120 121#define DOUBLE_TYPE_SIZE 64 122 123#define LONG_DOUBLE_TYPE_SIZE 64 124 125#define DEFAULT_SIGNED_CHAR 1 126 127#define SIZE_TYPE "unsigned int" 128 129#define PTRDIFF_TYPE "int" 130 131/*****************************************************************************/ 132/* REGISTER USAGE. */ 133/*****************************************************************************/ 134 135#define FIRST_PSEUDO_REGISTER 19 136 137/* On the CRX, only the stack pointer (r15) is such. */ 138#define FIXED_REGISTERS \ 139 { \ 140 /* r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 */ \ 141 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \ 142 /* r11 r12 r13 ra sp r16 r17 cc */ \ 143 0, 0, 0, 0, 1, 0, 0, 1 \ 144 } 145 146/* On the CRX, calls clobbers r0-r6 (scratch registers), ra (the return address) 147 * and sp - (the stack pointer which is fixed). */ 148#define CALL_USED_REGISTERS \ 149 { \ 150 /* r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 */ \ 151 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, \ 152 /* r11 r12 r13 ra sp r16 r17 cc */ \ 153 0, 0, 0, 1, 1, 1, 1, 1 \ 154 } 155 156#define HARD_REGNO_NREGS(REGNO, MODE) \ 157 ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) 158 159/* On the CRX architecture, HILO regs can only hold SI mode. */ 160#define HARD_REGNO_MODE_OK(REGNO, MODE) crx_hard_regno_mode_ok(REGNO, MODE) 161 162/* So far no patterns for moving CCMODE data are available */ 163#define AVOID_CCMODE_COPIES 164 165/* Interrupt functions can only use registers that have already been saved by 166 * the prologue, even if they would normally be call-clobbered. */ 167#define HARD_REGNO_RENAME_OK(SRC, DEST) \ 168 (!crx_interrupt_function_p () || regs_ever_live[DEST]) 169 170#define MODES_TIEABLE_P(MODE1, MODE2) 1 171 172enum reg_class 173{ 174 NO_REGS, 175 LO_REGS, 176 HI_REGS, 177 HILO_REGS, 178 NOSP_REGS, 179 GENERAL_REGS, 180 ALL_REGS, 181 LIM_REG_CLASSES 182}; 183 184#define N_REG_CLASSES (int) LIM_REG_CLASSES 185 186#define REG_CLASS_NAMES \ 187 { \ 188 "NO_REGS", \ 189 "LO_REGS", \ 190 "HI_REGS", \ 191 "HILO_REGS", \ 192 "NOSP_REGS", \ 193 "GENERAL_REGS", \ 194 "ALL_REGS" \ 195 } 196 197#define REG_CLASS_CONTENTS \ 198 { \ 199 {0x00000000}, /* NO_REGS */ \ 200 {0x00010000}, /* LO_REGS : 16 */ \ 201 {0x00020000}, /* HI_REGS : 17 */ \ 202 {0x00030000}, /* HILO_REGS : 16, 17 */ \ 203 {0x00007fff}, /* NOSP_REGS : 0 - 14 */ \ 204 {0x0000ffff}, /* GENERAL_REGS : 0 - 15 */ \ 205 {0x0007ffff} /* ALL_REGS : 0 - 18 */ \ 206 } 207 208#define REGNO_REG_CLASS(REGNO) crx_regno_reg_class(REGNO) 209 210#define BASE_REG_CLASS GENERAL_REGS 211 212#define INDEX_REG_CLASS GENERAL_REGS 213 214#define REG_CLASS_FROM_LETTER(C) \ 215 ((C) == 'b' ? NOSP_REGS : \ 216 (C) == 'l' ? LO_REGS : \ 217 (C) == 'h' ? HI_REGS : \ 218 (C) == 'k' ? HILO_REGS : \ 219 NO_REGS) 220 221#define REGNO_OK_FOR_BASE_P(REGNO) \ 222 ((REGNO) < 16 \ 223 || (reg_renumber && (unsigned)reg_renumber[REGNO] < 16)) 224 225#define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_BASE_P(REGNO) 226 227#define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS 228 229#define SECONDARY_RELOAD_CLASS(CLASS, MODE, X) \ 230 crx_secondary_reload_class (CLASS, MODE, X) 231 232#define CLASS_MAX_NREGS(CLASS, MODE) \ 233 (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD 234 235#define SIGNED_INT_FITS_N_BITS(imm, N) \ 236 ((((imm) < ((long long)1<<((N)-1))) && ((imm) >= -((long long)1<<((N)-1)))) ? 1 : 0) 237 238#define UNSIGNED_INT_FITS_N_BITS(imm, N) \ 239 (((imm) < ((long long)1<<(N)) && (imm) >= (long long)0) ? 1 : 0) 240 241#define HILO_REGNO_P(regno) \ 242 (reg_classes_intersect_p(REGNO_REG_CLASS(regno), HILO_REGS)) 243 244#define INT_CST4(VALUE) \ 245 (((VALUE) >= -1 && (VALUE) <= 4) || (VALUE) == -4 \ 246 || (VALUE) == 7 || (VALUE) == 8 || (VALUE) == 16 || (VALUE) == 32 \ 247 || (VALUE) == 20 || (VALUE) == 12 || (VALUE) == 48) 248 249#define CONST_OK_FOR_LETTER_P(VALUE, C) \ 250 /* Legal const for store immediate instructions */ \ 251 ((C) == 'I' ? UNSIGNED_INT_FITS_N_BITS(VALUE, 3) : \ 252 (C) == 'J' ? UNSIGNED_INT_FITS_N_BITS(VALUE, 4) : \ 253 (C) == 'K' ? UNSIGNED_INT_FITS_N_BITS(VALUE, 5) : \ 254 (C) == 'L' ? INT_CST4(VALUE) : \ 255 0) 256 257#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \ 258 ((C) == 'G' ? crx_const_double_ok (VALUE) : \ 259 0) 260 261/*****************************************************************************/ 262/* STACK LAYOUT AND CALLING CONVENTIONS. */ 263/*****************************************************************************/ 264 265#define STACK_GROWS_DOWNWARD 266 267#define STARTING_FRAME_OFFSET 0 268 269#define STACK_POINTER_REGNUM 15 270 271#define FRAME_POINTER_REGNUM 13 272 273#define ARG_POINTER_REGNUM 12 274 275#define STATIC_CHAIN_REGNUM 1 276 277#define RETURN_ADDRESS_REGNUM 14 278 279#define FIRST_PARM_OFFSET(FNDECL) 0 280 281#define FRAME_POINTER_REQUIRED (current_function_calls_alloca) 282 283#define ELIMINABLE_REGS \ 284 { \ 285 { ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 286 { ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 287 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ 288 } 289 290#define CAN_ELIMINATE(FROM, TO) \ 291 ((TO) == STACK_POINTER_REGNUM ? ! frame_pointer_needed : 1) 292 293#define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 294 do { \ 295 (OFFSET) = crx_initial_elimination_offset ((FROM), (TO)); \ 296 } while (0) 297 298/*****************************************************************************/ 299/* PASSING FUNCTION ARGUMENTS */ 300/*****************************************************************************/ 301 302#define ACCUMULATE_OUTGOING_ARGS (TARGET_NO_PUSH_ARGS) 303 304#define PUSH_ARGS (!TARGET_NO_PUSH_ARGS) 305 306#define PUSH_ROUNDING(BYTES) (((BYTES) + 3) & ~3) 307 308#define RETURN_POPS_ARGS(FNDECL, FUNTYPE, SIZE) 0 309 310#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ 311 ((rtx) crx_function_arg(&(CUM), (MODE), (TYPE), (NAMED))) 312 313#ifndef CUMULATIVE_ARGS 314struct cumulative_args 315{ 316 int ints; 317}; 318 319#define CUMULATIVE_ARGS struct cumulative_args 320#endif 321 322/* On the CRX architecture, Varargs routines should receive their parameters on 323 * the stack. */ 324 325#define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ 326 crx_init_cumulative_args(&(CUM), (FNTYPE), (LIBNAME)) 327 328#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ 329 crx_function_arg_advance(&(CUM), (MODE), (TYPE), (NAMED)) 330 331#define FUNCTION_ARG_REGNO_P(REGNO) crx_function_arg_regno_p(REGNO) 332 333/*****************************************************************************/ 334/* RETURNING FUNCTION VALUE */ 335/*****************************************************************************/ 336 337/* On the CRX, the return value is in R0 */ 338 339#define FUNCTION_VALUE(VALTYPE, FUNC) \ 340 gen_rtx_REG(TYPE_MODE (VALTYPE), 0) 341 342#define LIBCALL_VALUE(MODE) gen_rtx_REG (MODE, 0) 343 344#define FUNCTION_VALUE_REGNO_P(N) ((N) == 0) 345 346#define CRX_STRUCT_VALUE_REGNUM 0 347 348/*****************************************************************************/ 349/* GENERATING CODE FOR PROFILING - NOT IMPLEMENTED */ 350/*****************************************************************************/ 351 352#undef FUNCTION_PROFILER 353#define FUNCTION_PROFILER(STREAM, LABELNO) \ 354{ \ 355 sorry ("Profiler support for CRX"); \ 356} 357 358/*****************************************************************************/ 359/* TRAMPOLINES FOR NESTED FUNCTIONS - NOT SUPPORTED */ 360/*****************************************************************************/ 361 362#define TRAMPOLINE_SIZE 32 363 364#define INITIALIZE_TRAMPOLINE(addr, fnaddr, static_chain) \ 365{ \ 366 sorry ("Trampoline support for CRX"); \ 367} 368 369/*****************************************************************************/ 370/* ADDRESSING MODES */ 371/*****************************************************************************/ 372 373#define CONSTANT_ADDRESS_P(X) \ 374 (GET_CODE (X) == LABEL_REF \ 375 || GET_CODE (X) == SYMBOL_REF \ 376 || GET_CODE (X) == CONST \ 377 || GET_CODE (X) == CONST_INT) 378 379#define MAX_REGS_PER_ADDRESS 2 380 381#define HAVE_POST_INCREMENT 1 382#define HAVE_POST_DECREMENT 1 383#define HAVE_POST_MODIFY_DISP 1 384#define HAVE_POST_MODIFY_REG 0 385 386#ifdef REG_OK_STRICT 387#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) 388#define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) 389#else 390#define REG_OK_FOR_BASE_P(X) 1 391#define REG_OK_FOR_INDEX_P(X) 1 392#endif /* REG_OK_STRICT */ 393 394#ifdef REG_OK_STRICT 395#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 396{ \ 397 if (crx_legitimate_address_p (MODE, X, 1)) \ 398 goto LABEL; \ 399} 400#else 401#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 402{ \ 403 if (crx_legitimate_address_p (MODE, X, 0)) \ 404 goto LABEL; \ 405} 406#endif /* REG_OK_STRICT */ 407 408#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \ 409{ \ 410 if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == POST_DEC) \ 411 goto LABEL; \ 412} 413 414#define LEGITIMATE_CONSTANT_P(X) 1 415 416/*****************************************************************************/ 417/* CONDITION CODE STATUS */ 418/*****************************************************************************/ 419 420/*****************************************************************************/ 421/* RELATIVE COSTS OF OPERATIONS */ 422/*****************************************************************************/ 423 424#define MEMORY_MOVE_COST(MODE, CLASS, IN) crx_memory_move_cost(MODE, CLASS, IN) 425/* Moving to processor register flushes pipeline - thus asymmetric */ 426#define REGISTER_MOVE_COST(MODE, FROM, TO) ((TO != GENERAL_REGS) ? 8 : 2) 427/* Assume best case (branch predicted) */ 428#define BRANCH_COST 2 429 430#define SLOW_BYTE_ACCESS 1 431 432/*****************************************************************************/ 433/* DIVIDING THE OUTPUT INTO SECTIONS */ 434/*****************************************************************************/ 435 436#define TEXT_SECTION_ASM_OP "\t.section\t.text" 437 438#define DATA_SECTION_ASM_OP "\t.section\t.data" 439 440#define BSS_SECTION_ASM_OP "\t.section\t.bss" 441 442/*****************************************************************************/ 443/* POSITION INDEPENDENT CODE */ 444/*****************************************************************************/ 445 446#define PIC_OFFSET_TABLE_REGNUM 12 447 448#define LEGITIMATE_PIC_OPERAND_P(X) 1 449 450/*****************************************************************************/ 451/* ASSEMBLER FORMAT */ 452/*****************************************************************************/ 453 454#define GLOBAL_ASM_OP "\t.globl\t" 455 456#undef USER_LABEL_PREFIX 457#define USER_LABEL_PREFIX "_" 458 459#undef ASM_OUTPUT_LABELREF 460#define ASM_OUTPUT_LABELREF(STREAM, NAME) \ 461 asm_fprintf (STREAM, "%U%s", (*targetm.strip_name_encoding) (NAME)); 462 463#undef ASM_APP_ON 464#define ASM_APP_ON "#APP\n" 465 466#undef ASM_APP_OFF 467#define ASM_APP_OFF "#NO_APP\n" 468 469/*****************************************************************************/ 470/* INSTRUCTION OUTPUT */ 471/*****************************************************************************/ 472 473#define REGISTER_NAMES \ 474 { \ 475 "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ 476 "r8", "r9", "r10", "r11", "r12", "r13", "ra", "sp", \ 477 "lo", "hi", "cc" \ 478 } 479 480#define PRINT_OPERAND(STREAM, X, CODE) \ 481 crx_print_operand(STREAM, X, CODE) 482 483#define PRINT_OPERAND_ADDRESS(STREAM, ADDR) \ 484 crx_print_operand_address(STREAM, ADDR) 485 486/*****************************************************************************/ 487/* OUTPUT OF DISPATCH TABLES */ 488/*****************************************************************************/ 489 490#define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ 491 asm_fprintf ((STREAM), "\t.long\t.L%d\n", (VALUE)) 492 493/*****************************************************************************/ 494/* ALIGNMENT IN ASSEMBLER FILE */ 495/*****************************************************************************/ 496 497#define ASM_OUTPUT_ALIGN(STREAM, POWER) \ 498 asm_fprintf ((STREAM), "\t.align\t%d\n", 1 << (POWER)) 499 500/*****************************************************************************/ 501/* MISCELLANEOUS PARAMETERS */ 502/*****************************************************************************/ 503 504#define CASE_VECTOR_MODE Pmode 505 506#define MOVE_MAX 4 507 508#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 509 510#define STORE_FLAG_VALUE 1 511 512#define Pmode SImode 513 514#define FUNCTION_MODE QImode 515 516/*****************************************************************************/ 517/* EXTERNAL DECLARATIONS FOR VARIABLES DEFINED IN CRX.C */ 518/*****************************************************************************/ 519 520extern rtx crx_compare_op0; /* operand 0 for comparisons */ 521extern rtx crx_compare_op1; /* operand 1 for comparisons */ 522 523#endif /* ! GCC_CRX_H */ 524