1 /*{{{ Comment. */ 2 3 /* Definitions of FR30 target. 4 Copyright (C) 1998-2019 Free Software Foundation, Inc. 5 Contributed by Cygnus Solutions. 6 7 This file is part of GCC. 8 9 GCC is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 3, or (at your option) 12 any later version. 13 14 GCC is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GCC; see the file COPYING3. If not see 21 <http://www.gnu.org/licenses/>. */ 22 23 /*}}}*/ 24 /*{{{ Run-time target specifications. */ 25 26 #undef ASM_SPEC 27 #define ASM_SPEC "" 28 29 /* Define this to be a string constant containing `-D' options to define the 30 predefined macros that identify this machine and system. These macros will 31 be predefined unless the `-ansi' option is specified. */ 32 33 #define TARGET_CPU_CPP_BUILTINS() \ 34 do \ 35 { \ 36 builtin_define_std ("fr30"); \ 37 builtin_assert ("machine=fr30"); \ 38 } \ 39 while (0) 40 41 #undef STARTFILE_SPEC 42 #define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s" 43 44 /* Include the OS stub library, so that the code can be simulated. 45 This is not the right way to do this. Ideally this kind of thing 46 should be done in the linker script - but I have not worked out how 47 to specify the location of a linker script in a gcc command line yet... */ 48 #undef ENDFILE_SPEC 49 #define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s" 50 51 #undef LIB_SPEC 52 #define LIB_SPEC "-lc" 53 54 #undef LINK_SPEC 55 #define LINK_SPEC "%{h*} %{v:-V} \ 56 %{static:-Bstatic} %{shared:-shared} %{symbolic:-Bsymbolic}" 57 58 /*}}}*/ 59 /*{{{ Storage Layout. */ 60 61 #define BITS_BIG_ENDIAN 1 62 63 #define BYTES_BIG_ENDIAN 1 64 65 #define WORDS_BIG_ENDIAN 1 66 67 #define UNITS_PER_WORD 4 68 69 #define PROMOTE_MODE(MODE,UNSIGNEDP,TYPE) \ 70 do \ 71 { \ 72 if (GET_MODE_CLASS (MODE) == MODE_INT \ 73 && GET_MODE_SIZE (MODE) < 4) \ 74 (MODE) = SImode; \ 75 } \ 76 while (0) 77 78 #define PARM_BOUNDARY 32 79 80 #define STACK_BOUNDARY 32 81 82 #define FUNCTION_BOUNDARY 32 83 84 #define BIGGEST_ALIGNMENT 32 85 86 #define DATA_ALIGNMENT(TYPE, ALIGN) \ 87 (TREE_CODE (TYPE) == ARRAY_TYPE \ 88 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ 89 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 90 91 #define STRICT_ALIGNMENT 1 92 93 #define PCC_BITFIELD_TYPE_MATTERS 1 94 95 /*}}}*/ 96 /*{{{ Layout of Source Language Data Types. */ 97 98 #define SHORT_TYPE_SIZE 16 99 #define INT_TYPE_SIZE 32 100 #define LONG_TYPE_SIZE 32 101 #define LONG_LONG_TYPE_SIZE 64 102 #define FLOAT_TYPE_SIZE 32 103 #define DOUBLE_TYPE_SIZE 64 104 #define LONG_DOUBLE_TYPE_SIZE 64 105 106 #define DEFAULT_SIGNED_CHAR 1 107 108 #undef SIZE_TYPE 109 #define SIZE_TYPE "unsigned int" 110 111 #undef PTRDIFF_TYPE 112 #define PTRDIFF_TYPE "int" 113 114 #undef WCHAR_TYPE 115 #define WCHAR_TYPE "long int" 116 117 #undef WCHAR_TYPE_SIZE 118 #define WCHAR_TYPE_SIZE BITS_PER_WORD 119 120 /*}}}*/ 121 /*{{{ REGISTER BASICS. */ 122 123 /* Number of hardware registers known to the compiler. They receive numbers 0 124 through `FIRST_PSEUDO_REGISTER-1'; thus, the first pseudo register's number 125 really is assigned the number `FIRST_PSEUDO_REGISTER'. */ 126 #define FIRST_PSEUDO_REGISTER 21 127 128 /* Fixed register assignments: */ 129 130 /* Here we do a BAD THING - reserve a register for use by the machine 131 description file. There are too many places in compiler where it 132 assumes that it can issue a branch or jump instruction without 133 providing a scratch register for it, and reload just cannot cope, so 134 we keep a register back for these situations. */ 135 #define COMPILER_SCRATCH_REGISTER 0 136 137 /* The register that contains the result of a function call. */ 138 #define RETURN_VALUE_REGNUM 4 139 140 /* The first register that can contain the arguments to a function. */ 141 #define FIRST_ARG_REGNUM 4 142 143 /* A call-used register that can be used during the function prologue. */ 144 #define PROLOGUE_TMP_REGNUM COMPILER_SCRATCH_REGISTER 145 146 /* Register numbers used for passing a function's static chain pointer. If 147 register windows are used, the register number as seen by the called 148 function is `STATIC_CHAIN_INCOMING_REGNUM', while the register number as 149 seen by the calling function is `STATIC_CHAIN_REGNUM'. If these registers 150 are the same, `STATIC_CHAIN_INCOMING_REGNUM' need not be defined. 151 152 The static chain register need not be a fixed register. 153 154 If the static chain is passed in memory, these macros should not be defined; 155 instead, the next two macros should be defined. */ 156 #define STATIC_CHAIN_REGNUM 12 157 /* #define STATIC_CHAIN_INCOMING_REGNUM */ 158 159 /* An FR30 specific hardware register. */ 160 #define ACCUMULATOR_REGNUM 13 161 162 /* The register number of the frame pointer register, which is used to access 163 automatic variables in the stack frame. On some machines, the hardware 164 determines which register this is. On other machines, you can choose any 165 register you wish for this purpose. */ 166 #define FRAME_POINTER_REGNUM 14 167 168 /* The register number of the stack pointer register, which must also be a 169 fixed register according to `FIXED_REGISTERS'. On most machines, the 170 hardware determines which register this is. */ 171 #define STACK_POINTER_REGNUM 15 172 173 /* The following a fake hard registers that describe some of the dedicated 174 registers on the FR30. */ 175 #define CONDITION_CODE_REGNUM 16 176 #define RETURN_POINTER_REGNUM 17 177 #define MD_HIGH_REGNUM 18 178 #define MD_LOW_REGNUM 19 179 180 /* An initializer that says which registers are used for fixed purposes all 181 throughout the compiled code and are therefore not available for general 182 allocation. These would include the stack pointer, the frame pointer 183 (except on machines where that can be used as a general register when no 184 frame pointer is needed), the program counter on machines where that is 185 considered one of the addressable registers, and any other numbered register 186 with a standard use. 187 188 This information is expressed as a sequence of numbers, separated by commas 189 and surrounded by braces. The Nth number is 1 if register N is fixed, 0 190 otherwise. 191 192 The table initialized from this macro, and the table initialized by the 193 following one, may be overridden at run time either automatically, by the 194 actions of the macro `TARGET_CONDITIONAL_REGISTER_USAGE', or by the user 195 with the command options `-ffixed-REG', `-fcall-used-REG' and 196 `-fcall-saved-REG'. */ 197 #define FIXED_REGISTERS \ 198 { 1, 0, 0, 0, 0, 0, 0, 0, /* 0 - 7 */ \ 199 0, 0, 0, 0, 0, 0, 0, 1, /* 8 - 15 */ \ 200 1, 1, 1, 1, 1 } /* 16 - 20 */ 201 202 /* XXX - MDL and MDH set as fixed for now - this is until I can get the 203 mul patterns working. */ 204 205 /* Like `FIXED_REGISTERS' but has 1 for each register that is clobbered (in 206 general) by function calls as well as for fixed registers. This macro 207 therefore identifies the registers that are not available for general 208 allocation of values that must live across function calls. 209 210 If a register has 0 in `CALL_USED_REGISTERS', the compiler automatically 211 saves it on function entry and restores it on function exit, if the register 212 is used within the function. */ 213 #define CALL_USED_REGISTERS \ 214 { 1, 1, 1, 1, 1, 1, 1, 1, /* 0 - 7 */ \ 215 0, 0, 0, 0, 1, 1, 0, 1, /* 8 - 15 */ \ 216 1, 1, 1, 1, 1 } /* 16 - 20 */ 217 218 /* A C initializer containing the assembler's names for the machine registers, 219 each one as a C string constant. This is what translates register numbers 220 in the compiler into assembler language. */ 221 #define REGISTER_NAMES \ 222 { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ 223 "r8", "r9", "r10", "r11", "r12", "ac", "fp", "sp", \ 224 "cc", "rp", "mdh", "mdl", "ap" \ 225 } 226 227 /* If defined, a C initializer for an array of structures containing a name and 228 a register number. This macro defines additional names for hard registers, 229 thus allowing the `asm' option in declarations to refer to registers using 230 alternate names. */ 231 #define ADDITIONAL_REGISTER_NAMES \ 232 { \ 233 {"r13", 13}, {"r14", 14}, {"r15", 15}, {"usp", 15}, {"ps", 16}\ 234 } 235 236 /*}}}*/ 237 /*{{{ Register Classes. */ 238 239 /* An enumeral type that must be defined with all the register class names as 240 enumeral values. `NO_REGS' must be first. `ALL_REGS' must be the last 241 register class, followed by one more enumeral value, `LIM_REG_CLASSES', 242 which is not a register class but rather tells how many classes there are. 243 244 Each register class has a number, which is the value of casting the class 245 name to type `int'. The number serves as an index in many of the tables 246 described below. */ 247 enum reg_class 248 { 249 NO_REGS, 250 MULTIPLY_32_REG, /* the MDL register as used by the MULH, MULUH insns */ 251 MULTIPLY_64_REG, /* the MDH,MDL register pair as used by MUL and MULU */ 252 LOW_REGS, /* registers 0 through 7 */ 253 HIGH_REGS, /* registers 8 through 15 */ 254 REAL_REGS, /* i.e. all the general hardware registers on the FR30 */ 255 ALL_REGS, 256 LIM_REG_CLASSES 257 }; 258 259 #define GENERAL_REGS REAL_REGS 260 #define N_REG_CLASSES ((int) LIM_REG_CLASSES) 261 262 /* An initializer containing the names of the register classes as C string 263 constants. These names are used in writing some of the debugging dumps. */ 264 #define REG_CLASS_NAMES \ 265 { \ 266 "NO_REGS", \ 267 "MULTIPLY_32_REG", \ 268 "MULTIPLY_64_REG", \ 269 "LOW_REGS", \ 270 "HIGH_REGS", \ 271 "REAL_REGS", \ 272 "ALL_REGS" \ 273 } 274 275 /* An initializer containing the contents of the register classes, as integers 276 which are bit masks. The Nth integer specifies the contents of class N. 277 The way the integer MASK is interpreted is that register R is in the class 278 if `MASK & (1 << R)' is 1. 279 280 When the machine has more than 32 registers, an integer does not suffice. 281 Then the integers are replaced by sub-initializers, braced groupings 282 containing several integers. Each sub-initializer must be suitable as an 283 initializer for the type `HARD_REG_SET' which is defined in 284 `hard-reg-set.h'. */ 285 #define REG_CLASS_CONTENTS \ 286 { \ 287 { 0 }, \ 288 { 1 << MD_LOW_REGNUM }, \ 289 { (1 << MD_LOW_REGNUM) | (1 << MD_HIGH_REGNUM) }, \ 290 { (1 << 8) - 1 }, \ 291 { ((1 << 8) - 1) << 8 }, \ 292 { (1 << CONDITION_CODE_REGNUM) - 1 }, \ 293 { (1 << FIRST_PSEUDO_REGISTER) - 1 } \ 294 } 295 296 /* A C expression whose value is a register class containing hard register 297 REGNO. In general there is more than one such class; choose a class which 298 is "minimal", meaning that no smaller class also contains the register. */ 299 #define REGNO_REG_CLASS(REGNO) \ 300 ( (REGNO) < 8 ? LOW_REGS \ 301 : (REGNO) < CONDITION_CODE_REGNUM ? HIGH_REGS \ 302 : (REGNO) == MD_LOW_REGNUM ? MULTIPLY_32_REG \ 303 : (REGNO) == MD_HIGH_REGNUM ? MULTIPLY_64_REG \ 304 : ALL_REGS) 305 306 /* A macro whose definition is the name of the class to which a valid base 307 register must belong. A base register is one used in an address which is 308 the register value plus a displacement. */ 309 #define BASE_REG_CLASS REAL_REGS 310 311 /* A macro whose definition is the name of the class to which a valid index 312 register must belong. An index register is one used in an address where its 313 value is either multiplied by a scale factor or added to another register 314 (as well as added to a displacement). */ 315 #define INDEX_REG_CLASS REAL_REGS 316 317 /* A C expression which is nonzero if register number NUM is suitable for use 318 as a base register in operand addresses. It may be either a suitable hard 319 register or a pseudo register that has been allocated such a hard register. */ 320 #define REGNO_OK_FOR_BASE_P(NUM) 1 321 322 /* A C expression which is nonzero if register number NUM is suitable for use 323 as an index register in operand addresses. It may be either a suitable hard 324 register or a pseudo register that has been allocated such a hard register. 325 326 The difference between an index register and a base register is that the 327 index register may be scaled. If an address involves the sum of two 328 registers, neither one of them scaled, then either one may be labeled the 329 "base" and the other the "index"; but whichever labeling is used must fit 330 the machine's constraints of which registers may serve in each capacity. 331 The compiler will try both labelings, looking for one that is valid, and 332 will reload one or both registers only if neither labeling works. */ 333 #define REGNO_OK_FOR_INDEX_P(NUM) 1 334 335 #define CLASS_MAX_NREGS(CLASS, MODE) targetm.hard_regno_nregs (0, MODE) 336 337 /*}}}*/ 338 /*{{{ Basic Stack Layout. */ 339 340 /* Define this macro if pushing a word onto the stack moves the stack pointer 341 to a smaller address. */ 342 #define STACK_GROWS_DOWNWARD 1 343 344 /* Define this to macro nonzero if the addresses of local variable slots 345 are at negative offsets from the frame pointer. */ 346 #define FRAME_GROWS_DOWNWARD 1 347 348 /* Offset from the stack pointer register to the first location at which 349 outgoing arguments are placed. If not specified, the default value of zero 350 is used. This is the proper value for most machines. 351 352 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first 353 location at which outgoing arguments are placed. */ 354 #define STACK_POINTER_OFFSET 0 355 356 /* Offset from the argument pointer register to the first argument's address. 357 On some machines it may depend on the data type of the function. 358 359 If `ARGS_GROW_DOWNWARD', this is the offset to the location above the first 360 argument's address. */ 361 #define FIRST_PARM_OFFSET(FUNDECL) 0 362 363 /* A C expression whose value is RTL representing the location of the incoming 364 return address at the beginning of any function, before the prologue. This 365 RTL is either a `REG', indicating that the return value is saved in `REG', 366 or a `MEM' representing a location in the stack. 367 368 You only need to define this macro if you want to support call frame 369 debugging information like that provided by DWARF 2. */ 370 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (SImode, RETURN_POINTER_REGNUM) 371 372 /*}}}*/ 373 /*{{{ Register That Address the Stack Frame. */ 374 375 /* The register number of the arg pointer register, which is used to access the 376 function's argument list. On some machines, this is the same as the frame 377 pointer register. On some machines, the hardware determines which register 378 this is. On other machines, you can choose any register you wish for this 379 purpose. If this is not the same register as the frame pointer register, 380 then you must mark it as a fixed register according to `FIXED_REGISTERS', or 381 arrange to be able to eliminate it. */ 382 #define ARG_POINTER_REGNUM 20 383 384 /*}}}*/ 385 /*{{{ Eliminating the Frame Pointer and the Arg Pointer. */ 386 387 /* If defined, this macro specifies a table of register pairs used to eliminate 388 unneeded registers that point into the stack frame. If it is not defined, 389 the only elimination attempted by the compiler is to replace references to 390 the frame pointer with references to the stack pointer. 391 392 The definition of this macro is a list of structure initializations, each of 393 which specifies an original and replacement register. 394 395 On some machines, the position of the argument pointer is not known until 396 the compilation is completed. In such a case, a separate hard register must 397 be used for the argument pointer. This register can be eliminated by 398 replacing it with either the frame pointer or the argument pointer, 399 depending on whether or not the frame pointer has been eliminated. 400 401 In this case, you might specify: 402 #define ELIMINABLE_REGS \ 403 {{ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 404 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 405 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}} 406 407 Note that the elimination of the argument pointer with the stack pointer is 408 specified first since that is the preferred elimination. */ 409 410 #define ELIMINABLE_REGS \ 411 { \ 412 {ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ 413 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \ 414 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \ 415 } 416 417 /* This macro returns the initial difference between the specified pair 418 of registers. */ 419 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ 420 (OFFSET) = fr30_compute_frame_size (FROM, TO) 421 422 /*}}}*/ 423 /*{{{ Passing Function Arguments on the Stack. */ 424 425 /* If defined, the maximum amount of space required for outgoing arguments will 426 be computed and placed into the variable 427 `crtl->outgoing_args_size'. No space will be pushed onto the 428 stack for each call; instead, the function prologue should increase the 429 stack frame size by this amount. 430 431 Defining both `PUSH_ROUNDING' and `ACCUMULATE_OUTGOING_ARGS' is not 432 proper. */ 433 #define ACCUMULATE_OUTGOING_ARGS 1 434 435 /*}}}*/ 436 /*{{{ Function Arguments in Registers. */ 437 438 /* The number of register assigned to holding function arguments. */ 439 440 #define FR30_NUM_ARG_REGS 4 441 442 /* A C type for declaring a variable that is used as the first argument of 443 `FUNCTION_ARG' and other related values. For some target machines, the type 444 `int' suffices and can hold the number of bytes of argument so far. 445 446 There is no need to record in `CUMULATIVE_ARGS' anything about the arguments 447 that have been passed on the stack. The compiler has other variables to 448 keep track of that. For target machines on which all arguments are passed 449 on the stack, there is no need to store anything in `CUMULATIVE_ARGS'; 450 however, the data structure must exist and should not be empty, so use 451 `int'. */ 452 /* On the FR30 this value is an accumulating count of the number of argument 453 registers that have been filled with argument values, as opposed to say, 454 the number of bytes of argument accumulated so far. */ 455 #define CUMULATIVE_ARGS int 456 457 /* A C statement (sans semicolon) for initializing the variable CUM for the 458 state at the beginning of the argument list. The variable has type 459 `CUMULATIVE_ARGS'. The value of FNTYPE is the tree node for the data type 460 of the function which will receive the args, or 0 if the args are to a 461 compiler support library function. The value of INDIRECT is nonzero when 462 processing an indirect call, for example a call through a function pointer. 463 The value of INDIRECT is zero for a call to an explicitly named function, a 464 library function call, or when `INIT_CUMULATIVE_ARGS' is used to find 465 arguments for the function being compiled. 466 467 When processing a call to a compiler support library function, LIBNAME 468 identifies which one. It is a `symbol_ref' rtx which contains the name of 469 the function, as a string. LIBNAME is 0 when an ordinary C function call is 470 being processed. Thus, each time this macro is called, either LIBNAME or 471 FNTYPE is nonzero, but never both of them at once. */ 472 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, INDIRECT, N_NAMED_ARGS) \ 473 (CUM) = 0 474 475 /* A C expression that is nonzero if REGNO is the number of a hard register in 476 which function arguments are sometimes passed. This does *not* include 477 implicit arguments such as the static chain and the structure-value address. 478 On many machines, no registers can be used for this purpose since all 479 function arguments are pushed on the stack. */ 480 #define FUNCTION_ARG_REGNO_P(REGNO) \ 481 ((REGNO) >= FIRST_ARG_REGNUM && ((REGNO) < FIRST_ARG_REGNUM + FR30_NUM_ARG_REGS)) 482 483 /*}}}*/ 484 /*{{{ How Large Values are Returned. */ 485 486 /* Define this macro to be 1 if all structure and union return values must be 487 in memory. Since this results in slower code, this should be defined only 488 if needed for compatibility with other compilers or with an ABI. If you 489 define this macro to be 0, then the conventions used for structure and union 490 return values are decided by the `TARGET_RETURN_IN_MEMORY' macro. 491 492 If not defined, this defaults to the value 1. */ 493 #define DEFAULT_PCC_STRUCT_RETURN 1 494 495 /*}}}*/ 496 /*{{{ Generating Code for Profiling. */ 497 498 /* A C statement or compound statement to output to FILE some assembler code to 499 call the profiling subroutine `mcount'. Before calling, the assembler code 500 must load the address of a counter variable into a register where `mcount' 501 expects to find the address. The name of this variable is `LP' followed by 502 the number LABELNO, so you would generate the name using `LP%d' in a 503 `fprintf'. 504 505 The details of how the address should be passed to `mcount' are determined 506 by your operating system environment, not by GCC. To figure them out, 507 compile a small program for profiling using the system's installed C 508 compiler and look at the assembler code that results. */ 509 #define FUNCTION_PROFILER(FILE, LABELNO) \ 510 { \ 511 fprintf (FILE, "\t mov rp, r1\n" ); \ 512 fprintf (FILE, "\t ldi:32 mcount, r0\n" ); \ 513 fprintf (FILE, "\t call @r0\n" ); \ 514 fprintf (FILE, ".word\tLP%d\n", LABELNO); \ 515 } 516 517 /*}}}*/ 518 /*{{{ Trampolines for Nested Functions. */ 519 520 /* A C expression for the size in bytes of the trampoline, as an integer. */ 521 #define TRAMPOLINE_SIZE 18 522 523 /* We want the trampoline to be aligned on a 32bit boundary so that we can 524 make sure the location of the static chain & target function within 525 the trampoline is also aligned on a 32bit boundary. */ 526 #define TRAMPOLINE_ALIGNMENT 32 527 528 /*}}}*/ 529 /*{{{ Addressing Modes. */ 530 531 /* A number, the maximum number of registers that can appear in a valid memory 532 address. Note that it is up to you to specify a value equal to the maximum 533 number that `GO_IF_LEGITIMATE_ADDRESS' would ever accept. */ 534 #define MAX_REGS_PER_ADDRESS 1 535 536 /* A C compound statement with a conditional `goto LABEL;' executed if X (an 537 RTX) is a legitimate memory address on the target machine for a memory 538 operand of mode MODE. */ 539 540 /* On the FR30 we only have one real addressing mode - an address in a 541 register. There are three special cases however: 542 543 * indexed addressing using small positive offsets from the stack pointer 544 545 * indexed addressing using small signed offsets from the frame pointer 546 547 * register plus register addressing using R13 as the base register. 548 549 At the moment we only support the first two of these special cases. */ 550 551 #ifdef REG_OK_STRICT 552 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 553 do \ 554 { \ 555 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ 556 goto LABEL; \ 557 if (GET_CODE (X) == PLUS \ 558 && ((MODE) == SImode || (MODE) == SFmode) \ 559 && GET_CODE (XEXP (X, 0)) == REG \ 560 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \ 561 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 562 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ 563 goto LABEL; \ 564 if (GET_CODE (X) == PLUS \ 565 && ((MODE) == SImode || (MODE) == SFmode) \ 566 && GET_CODE (XEXP (X, 0)) == REG \ 567 && REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ 568 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 569 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ 570 goto LABEL; \ 571 } \ 572 while (0) 573 #else 574 #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, LABEL) \ 575 do \ 576 { \ 577 if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ 578 goto LABEL; \ 579 if (GET_CODE (X) == PLUS \ 580 && ((MODE) == SImode || (MODE) == SFmode) \ 581 && GET_CODE (XEXP (X, 0)) == REG \ 582 && REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM \ 583 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 584 && IN_RANGE (INTVAL (XEXP (X, 1)), 0, (1 << 6) - 4)) \ 585 goto LABEL; \ 586 if (GET_CODE (X) == PLUS \ 587 && ((MODE) == SImode || (MODE) == SFmode) \ 588 && GET_CODE (XEXP (X, 0)) == REG \ 589 && (REGNO (XEXP (X, 0)) == FRAME_POINTER_REGNUM \ 590 || REGNO (XEXP (X, 0)) == ARG_POINTER_REGNUM) \ 591 && GET_CODE (XEXP (X, 1)) == CONST_INT \ 592 && IN_RANGE (INTVAL (XEXP (X, 1)), -(1 << 9), (1 << 9) - 4)) \ 593 goto LABEL; \ 594 } \ 595 while (0) 596 #endif 597 598 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for 599 use as a base register. For hard registers, it should always accept those 600 which the hardware permits and reject the others. Whether the macro accepts 601 or rejects pseudo registers must be controlled by `REG_OK_STRICT' as 602 described above. This usually requires two variant definitions, of which 603 `REG_OK_STRICT' controls the one actually used. */ 604 #ifdef REG_OK_STRICT 605 #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) <= STACK_POINTER_REGNUM) 606 #else 607 #define REG_OK_FOR_BASE_P(X) 1 608 #endif 609 610 /* A C expression that is nonzero if X (assumed to be a `reg' RTX) is valid for 611 use as an index register. 612 613 The difference between an index register and a base register is that the 614 index register may be scaled. If an address involves the sum of two 615 registers, neither one of them scaled, then either one may be labeled the 616 "base" and the other the "index"; but whichever labeling is used must fit 617 the machine's constraints of which registers may serve in each capacity. 618 The compiler will try both labelings, looking for one that is valid, and 619 will reload one or both registers only if neither labeling works. */ 620 #define REG_OK_FOR_INDEX_P(X) REG_OK_FOR_BASE_P (X) 621 622 /*}}}*/ 623 /*{{{ Describing Relative Costs of Operations */ 624 625 /* Define this macro as a C expression which is nonzero if accessing less than 626 a word of memory (i.e. a `char' or a `short') is no faster than accessing a 627 word of memory, i.e., if such access require more than one instruction or if 628 there is no difference in cost between byte and (aligned) word loads. 629 630 When this macro is not defined, the compiler will access a field by finding 631 the smallest containing object; when it is defined, a fullword load will be 632 used if alignment permits. Unless bytes accesses are faster than word 633 accesses, using word accesses is preferable since it may eliminate 634 subsequent memory access if subsequent accesses occur to other fields in the 635 same word of the structure, but to different bytes. */ 636 #define SLOW_BYTE_ACCESS 1 637 638 /*}}}*/ 639 /*{{{ Dividing the output into sections. */ 640 641 /* A C expression whose value is a string containing the assembler operation 642 that should precede instructions and read-only data. Normally `".text"' is 643 right. */ 644 #define TEXT_SECTION_ASM_OP "\t.text" 645 646 /* A C expression whose value is a string containing the assembler operation to 647 identify the following data as writable initialized data. Normally 648 `".data"' is right. */ 649 #define DATA_SECTION_ASM_OP "\t.data" 650 651 #define BSS_SECTION_ASM_OP "\t.section .bss" 652 653 /*}}}*/ 654 /*{{{ The Overall Framework of an Assembler File. */ 655 656 /* A C string constant describing how to begin a comment in the target 657 assembler language. The compiler assumes that the comment will end at the 658 end of the line. */ 659 #define ASM_COMMENT_START ";" 660 661 /* A C string constant for text to be output before each `asm' statement or 662 group of consecutive ones. Normally this is `"#APP"', which is a comment 663 that has no effect on most assemblers but tells the GNU assembler that it 664 must check the lines that follow for all valid assembler constructs. */ 665 #define ASM_APP_ON "#APP\n" 666 667 /* A C string constant for text to be output after each `asm' statement or 668 group of consecutive ones. Normally this is `"#NO_APP"', which tells the 669 GNU assembler to resume making the time-saving assumptions that are valid 670 for ordinary compiler output. */ 671 #define ASM_APP_OFF "#NO_APP\n" 672 673 /*}}}*/ 674 /*{{{ Output and Generation of Labels. */ 675 676 /* Globalizing directive for a label. */ 677 #define GLOBAL_ASM_OP "\t.globl " 678 679 /*}}}*/ 680 /*{{{ Output of Assembler Instructions. */ 681 682 /* A C compound statement to output to stdio stream STREAM the assembler syntax 683 for an instruction operand X. X is an RTL expression. 684 685 CODE is a value that can be used to specify one of several ways of printing 686 the operand. It is used when identical operands must be printed differently 687 depending on the context. CODE comes from the `%' specification that was 688 used to request printing of the operand. If the specification was just 689 `%DIGIT' then CODE is 0; if the specification was `%LTR DIGIT' then CODE is 690 the ASCII code for LTR. 691 692 If X is a register, this macro should print the register's name. The names 693 can be found in an array `reg_names' whose type is `char *[]'. `reg_names' 694 is initialized from `REGISTER_NAMES'. 695 696 When the machine description has a specification `%PUNCT' (a `%' followed by 697 a punctuation character), this macro is called with a null pointer for X and 698 the punctuation character for CODE. */ 699 #define PRINT_OPERAND(STREAM, X, CODE) fr30_print_operand (STREAM, X, CODE) 700 701 /* A C expression which evaluates to true if CODE is a valid punctuation 702 character for use in the `PRINT_OPERAND' macro. If 703 `PRINT_OPERAND_PUNCT_VALID_P' is not defined, it means that no punctuation 704 characters (except for the standard one, `%') are used in this way. */ 705 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) (CODE == '#') 706 707 /* A C compound statement to output to stdio stream STREAM the assembler syntax 708 for an instruction operand that is a memory reference whose address is X. X 709 is an RTL expression. */ 710 711 #define PRINT_OPERAND_ADDRESS(STREAM, X) fr30_print_operand_address (STREAM, X) 712 713 #define REGISTER_PREFIX "%" 714 #define LOCAL_LABEL_PREFIX "." 715 #define USER_LABEL_PREFIX "" 716 #define IMMEDIATE_PREFIX "" 717 718 /*}}}*/ 719 /*{{{ Output of Dispatch Tables. */ 720 721 /* This macro should be provided on machines where the addresses in a dispatch 722 table are relative to the table's own address. 723 724 The definition should be a C statement to output to the stdio stream STREAM 725 an assembler pseudo-instruction to generate a difference between two labels. 726 VALUE and REL are the numbers of two internal labels. The definitions of 727 these labels are output using `(*targetm.asm_out.internal_label)', and they must be 728 printed in the same way here. For example, 729 730 fprintf (STREAM, "\t.word L%d-L%d\n", VALUE, REL) */ 731 #define ASM_OUTPUT_ADDR_DIFF_ELT(STREAM, BODY, VALUE, REL) \ 732 fprintf (STREAM, "\t.word .L%d-.L%d\n", VALUE, REL) 733 734 /* This macro should be provided on machines where the addresses in a dispatch 735 table are absolute. 736 737 The definition should be a C statement to output to the stdio stream STREAM 738 an assembler pseudo-instruction to generate a reference to a label. VALUE 739 is the number of an internal label whose definition is output using 740 `(*targetm.asm_out.internal_label)'. For example, 741 742 fprintf (STREAM, "\t.word L%d\n", VALUE) */ 743 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \ 744 fprintf (STREAM, "\t.word .L%d\n", VALUE) 745 746 /*}}}*/ 747 /*{{{ Assembler Commands for Alignment. */ 748 749 /* A C statement to output to the stdio stream STREAM an assembler command to 750 advance the location counter to a multiple of 2 to the POWER bytes. POWER 751 will be a C expression of type `int'. */ 752 #define ASM_OUTPUT_ALIGN(STREAM, POWER) \ 753 fprintf ((STREAM), "\t.p2align %d\n", (POWER)) 754 755 /*}}}*/ 756 /*{{{ Miscellaneous Parameters. */ 757 758 /* An alias for a machine mode name. This is the machine mode that elements of 759 a jump-table should have. */ 760 #define CASE_VECTOR_MODE SImode 761 762 /* The maximum number of bytes that a single instruction can move quickly from 763 memory to memory. */ 764 #define MOVE_MAX 8 765 766 /* An alias for the machine mode for pointers. On most machines, define this 767 to be the integer mode corresponding to the width of a hardware pointer; 768 `SImode' on 32-bit machine or `DImode' on 64-bit machines. On some machines 769 you must define this to be one of the partial integer modes, such as 770 `PSImode'. 771 772 The width of `Pmode' must be at least as large as the value of 773 `POINTER_SIZE'. If it is not equal, you must define the macro 774 `POINTERS_EXTEND_UNSIGNED' to specify how pointers are extended to `Pmode'. */ 775 #define Pmode SImode 776 777 /* An alias for the machine mode used for memory references to functions being 778 called, in `call' RTL expressions. On most machines this should be 779 `QImode'. */ 780 #define FUNCTION_MODE QImode 781 782 /*}}}*/ 783 784 /* Local Variables: */ 785 /* folded-file: t */ 786 /* End: */ 787